US20050022538A1 - Temperature regulation apparatus of magnetic thermal storage medium type and vehicle air-conditioning system - Google Patents
Temperature regulation apparatus of magnetic thermal storage medium type and vehicle air-conditioning system Download PDFInfo
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- US20050022538A1 US20050022538A1 US10/899,730 US89973004A US2005022538A1 US 20050022538 A1 US20050022538 A1 US 20050022538A1 US 89973004 A US89973004 A US 89973004A US 2005022538 A1 US2005022538 A1 US 2005022538A1
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- Prior art keywords
- thermal storage
- magnetic thermal
- air
- storage unit
- storage medium
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
- B60H1/039—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from air leaving the interior of the vehicle, i.e. heat recovery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/002—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects
- F25B2321/0021—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a static fixed magnet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
A temperature regulation apparatus comprises an air path, a heat exchange path for a heat exchanging fluid, a magnetic thermal storage unit having a magnetic thermal storage medium which increases in temperature upon magnetization and decreases in temperature upon demagnetization, and a magnetic field generating unit for generating a magnetic field in the air path or the heat exchange path. The medium of the unit assumes one of a high temperature state and a low temperature state with the movement of the unit into the air path, and the other state with the movement of the unit into the heat exchange path. When the unit moves to the air path so the medium assumes the high temperature state, heat is radiated to the air, while when the unit moves to the air path so the medium assumes the low temperature state, heat is absorbed from the air.
Description
- 1. Field of the Invention
- The present invention relates to a temperature regulation apparatus of a magnetic thermal storage medium type having a magnetic thermal storage medium which increases in temperature, due to the magneto-caloric effect, upon magnetization and decreases in temperature upon demagnetization and a vehicle air-conditioning system using the temperature regulation apparatus for vehicles.
- 2. Description of the Related Art
- A conventional temperature regulation apparatus of a magnetic thermal storage medium type is available which can be used even at normal temperature. This temperature regulation apparatus of a magnetic thermal storage medium type comprises a heat exchange circuit with a heat exchanging fluid flowing therethrough, a radiator for discharging the heat of the heat exchanging fluid, a cooler reduced in temperature by the heat absorbed by the heat exchanging fluid, a circulator for circulating the heat exchanging fluid in the heat exchange circuit, a magnetic thermal storage unit for accommodating the magnetic thermal storage medium in a container and a magnetic field generating means for generating a magnetic field. This temperature regulation apparatus of a magnetic thermal storage medium type can assume a high temperature state in which the magnetic thermal storage medium is magnetized by the magnetic field and a low temperature state in which the magnetic thermal storage medium is demagnetized. In these two states, heat is exchanged with the heat exchanging fluid. The heat exchanging fluid in the radiator discharges heat to an object of heat radiation, while the heat exchanging fluid in the cooler absorbs heat from an object of cooling. Specifically, as the magnetic thermal storage medium is magnetized, heat is radiated to the heat exchanging fluid. The heat exchanging fluid which has absorbed heat from the magnetic thermal storage medium flows to the radiator and radiates heat to the object of heating. The heat exchanging fluid that has radiated heat to the object of heating in the radiator flows toward the magnetic thermal storage medium that has been demagnetized and reduced in temperature. Next, the heat exchanging fluid, from which heat is absorbed into the magnetic thermal storage medium, flows to the cooler thereby to absorb heat from the object of cooling.
- In the prior art described above, heat is exchanged between the heat exchanging fluid and the magnetic thermal storage medium at high or low temperature, and then heat is radiated by the radiator to the object of heating and absorbed by the cooler from the object of cooling. In this way, heat is exchanged indirectly with the heat exchanging fluid interposed between the magnetic thermal storage medium, the radiator and the cooler. Therefore, a radiator, a cooler, a heat exchange circuit and a circulator to circulate the heat exchanging fluid are required. This poses the problem that the configuration of the temperature regulation apparatus of a magnetic thermal storage medium type is complicated.
- In view of the aforementioned points, the object of this invention is to provide a temperature regulation apparatus of a magnetic thermal storage medium type in which heat can be exchanged directly between the magnetic thermal storage medium and the air.
- In order to accomplish the above object, according to a first aspect of the present invention, there is provided a temperature regulation apparatus of magnetic thermal storage medium type comprising: an air path (9) through which the air is allowed to flow; a heat exchange path (14) through which a heat exchanging fluid is allowed to flow; at least a magnetic thermal storage unit (10, 16, 50) including a magnetic thermal storage medium (13) increased to high temperature due to the magneto-caloric effect when magnetized and decreased to low temperature when demagnetized; and a magnetic field generating means (27, 28, 37) for generating a magnetic field in selected one of the air path (9) and the heat exchange path (14); wherein the magnetic thermal storage unit (10, 16, 50) is movable to the air path (9) and the heat exchange path (14); wherein with the movement of the magnetic thermal storage unit (10, 16, 50) to the air path (9), the magnetic thermal storage medium (13) is set in one of the high temperature state and the low temperature state depending on selected one of magnetization and demagnetization of the magnetic field generating means (27, 28, 37), while, with the movement of the magnetic thermal storage unit (10, 16, 50) to the heat exchange path (14), the magnetic thermal storage medium (13) is set in the other of the high temperature state and the low temperature state depending on selected one of magnetization and demagnetization of the magnetic field generating means (27, 28, 37); and wherein, in the case where the magnetic thermal storage unit (10, 16, 50) moves to the air path (9) and the magnetic thermal storage medium (13) is set in the high temperature state, heat is radiated to the air while, in the case where the magnetic thermal storage unit (10, 16, 50) moves to the air path (9) and the magnetic thermal storage medium (13) is set in the low temperature state, heat is absorbed from the air.
- In this aspect of the invention, the magnetic thermal storage unit (10, 16, 50) is movable between an air path (9) and a heat exchange path (14), and therefore heat can be exchanged between the air in the air path (9) and the heat exchanging fluid in the heat exchange path (14). Specifically, in the case where the magnetic thermal storage unit (10, 16, 50) moves so that a magnetic thermal storage medium (13) is magnetized and increased in temperature to such an extent that the temperature of the air in the air path (9) or the heat exchanging fluid in the heat exchange path (14) is lower than the high temperature of the magnetic thermal storage medium (13), heat is radiated to the air or the heat exchanging fluid, as the case may be. In the case where the magnetic thermal storage unit (10, 16, 50) moves so that the magnetic thermal storage medium (13) is demagnetized and decreased in temperature to such an extent that the temperature of the air in the air path (9) or the heat exchanging fluid in the heat exchange path (14) is higher than the low temperature of the magnetic thermal storage unit (13), on the other hand, heat is absorbed from the air or the heat exchanging fluid, as the case may be. In this way, with the movement of the magnetic thermal storage unit (10, 16, 50), the magnetic thermal storage medium (13) is increased or decreased in temperature, so that heat can be exchanged between the air in the air path (9) and the heat exchanging fluid in the heat exchange path (14). Also, a magnetic field generating means (27, 28, 37) can generate a magnetic field in the air path (9) or the heat exchange path (14), and therefore can increase or decrease the temperature of the magnetic thermal storage medium (13) in the air path (9) or the magnetic thermal storage medium (13) in the air exchange path (14). As a result, the magnetic thermal storage unit (10, 16, 50) can not only exchange heat directly with the air introduced into an indoor environment but also cool or heat the air introduced into the indoor environment. In short, with the movement of the magnetic thermal storage unit (10, 16, 50) between the air path (9) and the heat exchange path (14), a refrigeration cycle is formed in which heat is stored in and radiated from the magnetic thermal storage medium (13).
- According to a second aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the first aspect of the invention, wherein the magnetic field generating means (27, 28, 37) is arranged in both the air path (9) and the heat exchange path (14). Thus, the magnetic thermal storage medium (13) in the air path (9) can be increased to high or low temperature, and therefore the air can be cooled or heated, as the case may be.
- According to a third aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the first aspect of the invention, wherein the magnetic field generating means (27, 28, 37) is arranged movably to one of the air path (9) and the heat exchange path (14). Thus, a magnetic field can be generated in the air path (9) or the heat exchange path (14).
- According to a fourth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the first aspect of the invention, wherein the heat exchanging fluid is the air and the magnetic thermal storage unit (10, 16, 50) has a moisture absorber (12) integrated therewith for absorbing the moisture from the air. Therefore, the moisture can be absorbed from the air and an indoor humidity increase can be suppressed. In the case where the magnetic thermal storage medium (13) enters the magnetic field and increases in temperature, on the other hand, the moisture absorber (12) is heated and therefore regenerated. In the case where the magnetic thermal storage medium (13) is demagnetized and decreases in temperature, the moisture can be removed by the moisture absorber (12). Therefore, the magnetic thermal storage medium (13) is prevented from freezing while at the same time preventing a window from misting in a small indoor environment such as a vehicle compartment.
- According to a fifth aspect of the present invention, there is provided a temperature regulation apparatus of magnetic thermal storage medium type in the first aspect of the invention, wherein the air path (9), the heat exchange path (14), the magnetic thermal storage unit (10, 16, 50) and the magnetic field generating means (27, 28, 37) are arranged in an automotive vehicle, the apparatus further comprising a first outside air inlet (4) for introducing the air from outside the vehicle to the air path (9), an inside air path (5) for introducing the air in the vehicle to the air path (9), and a first inside-outside air switching door (6) arranged upstream of the air path (9) in the air flow for switching the outside air and the inside air, and wherein the air flows into the air path (9) from the first outside air inlet (4) to thereby control the air condition in the compartments of the vehicle when the first inside-outside air switching door (6) turns to the outside air introduction side.
- In the case where a magnetic field exists in the heat exchange path (14), therefore, the magnetic thermal storage unit (10, 16, 50) absorbs heat from the air in the air path (9) and radiates heat into the air in the heat exchange path (14) thereby to cool the indoor air. In the case where a magnetic field exists in the air path (9), on the other hand, the magnetic thermal storage unit (10, 16, 50) radiates heat to the air in the air path (9) and absorbs heat from the air in the heat exchange path (14) thereby to heat the indoor air. By introducing the air from a first outside air inlet (4) in this way, the increase in the carbon dioxide concentration in the indoor environment can be suppressed while at the same time discharging the odor from the indoor environment.
- According to a sixth aspect of the present invention, there is provided A temperature regulation apparatus of magnetic thermal storage medium type in the fourth aspect of the invention, further comprising: a first blower (7) for sending a selected one of the outside air and the inside air to the air path (9); a second outside air inlet (29) for introducing the outside air to the heat exchange path (14); an inside air inlet (14 a) for introducing the inside air to the heat exchange path (14); an air outlet (14 b) for discharging the air from the heat exchange path (14); a second inside-outside air switching door (15) for switching between the inside air from the inside air inlet (14 a) and the outside air from the second outside air inlet (29); and a second blower (17) for sending a selected one of the outside air and the inside air from the heat exchange path (14) to the air outlet (14 b).
- Thus, the air in the air path (9) can be sent into the indoor environment by a first blower (7), and the air in the heat exchange path (14) can be discharged outdoors by a second blower (17). In the case where the air to which heat is radiated from the magnetic thermal storage unit (10, 16, 50) is sent into the indoor environment through the air path (9), therefore, the air of which heat is radiated from the magnetic thermal storage unit (10, 16, 50) is sent to an air outlet (14 b) through the heat exchange path (14). Also, the outside air can be introduced into the heat exchange path (14) from a second outside air inlet (29) by a second inside-outside air switching door (15). Therefore, the outside air from the second outside air inlet (29) is passed through the heat exchange path (14) to exchange heat with the magnetic thermal storage medium (13). It is therefore not necessary to exchange heat by sending the conditioned indoor air to the heat exchange path (14), thereby making it possible to regulate the indoor temperature efficiently. In this case, the conditioned air is circulated in the indoor environment, and therefore the outdoor dust and dirt cannot easily enter the indoor environment.
- According to a seventh aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the sixth aspect of the invention, wherein the second blower (17) and the first blower (7) are arranged adjacently to each other, and therefore can be driven with a single motor. The use of a single motor makes it possible to match the air capacity between the first blower (7) and the second blower (17).
- According to an eighth aspect of the present invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the fourth aspect of the invention, wherein the movement of the magnetic thermal storage unit (10, 16, 50) to the air path (9) sets the magnetic thermal storage medium (13) in the low temperature state, and the movement of the magnetic thermal storage unit (10, 16, 50) to the heat exchange path (14) sets the magnetic thermal storage medium (13) in the high temperature state, and wherein, with the movement of the magnetic thermal storage unit (10, 16, 50) to the air path (9), the moisture absorber (12) is located upstream of the magnetic thermal storage unit (10, 16, 50) in the air flow and the magnetic thermal storage medium (13) is located downstream of the magnetic thermal storage unit (10, 16, 50) in the air flow, while with the movement of the magnetic thermal storage unit (10, 16, 50) to the heat exchange path (14), the magnetic thermal storage medium (13) is located upstream of the magnetic thermal storage unit (10, 16, 50) in the air flow and the moisture absorber (12) is located downstream of the magnetic thermal storage unit (10, 16, 50) in the air flow.
- In this aspect of the invention, the magnetic field generating means (27, 28, 37) generates a magnetic field in the heat exchange path (14). The magnetic thermal storage unit (10, 16, 50), therefore, absorbs heat from the air after moving to the air path (9). In this case, with the movement of the thermal storage unit (10, 16, 50) to the air path (9), the moisture absorber (12) arranged upstream of the magnetic thermal storage unit (10, 16, 50) in the air flow absorbs moisture from the passing air, and therefore the air flowing indoors can be dehumidified. Also, in view of the fact that the magnetic thermal storage medium (13) is located upstream of the magnetic thermal storage unit (10, 16, 50) in the air flow, the magnetic thermal storage medium (13) of the magnetic thermal storage unit (10, 16, 50) having moved to the heat exchange path (14) radiates heat to the passing air, and the resulting heated air is sent to the moisture absorber (12) thereby to regenerate the moisture absorber (12).
- According to an ninth aspect of the present invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the fourth aspect of the invention, wherein the movement of the magnetic thermal storage unit (10, 16, 50) to the air path (9) sets the magnetic thermal storage medium (13) in the high temperature state, and the movement of the magnetic thermal storage unit (10, 16, 50) to the heat exchange path (14) sets the magnetic thermal storage medium (13) in the low temperature state, wherein with the movement of the magnetic thermal storage unit (10, 16, 50) to the air path (9), the magnetic thermal storage medium (13) is located upstream of the magnetic thermal storage unit (10, 16, 50) in the air flow and the moisture absorber (12) is located downstream of the magnetic thermal storage unit (10, 16, 50) in the air flow, while with the movement of the magnetic thermal storage unit (10, 16, 50) to the heat exchange path (14), the moisture absorber (12) is located upstream of the magnetic thermal storage unit (10, 16, 50) in the air flow and the magnetic thermal storage medium (13) is located downstream of the magnetic thermal storage unit (10, 16, 50) in the air flow.
- The magnetic field generating means (27, 28, 37) generates a magnetic field in the air path (9). With the movement of the magnetic thermal storage unit (10, 16, 50) to the air path (9), therefore, heat is radiated to the air. In such a case, the movement of the magnetic thermal storage unit (10, 16, 50) to the air path (9) causes heat radiation to the passing air from the magnetic thermal storage medium (13) of the magnetic thermal storage unit (10, 16, 50). Thus, the moisture in the moisture absorber (12) located downstream of the magnetic thermal storage unit (10, 16, 50) is sent indoors. With the movement of the magnetic thermal storage unit (10, 16, 50) to the heat exchange path (14), on the other hand, the moisture can be absorbed by the moisture absorber (12) from the air in the heat exchange path (14). Thus, the humidity change of the indoor air is suppressed.
- According to a tenth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the fourth aspect of the invention, wherein the magnetic thermal storage medium (13) and the moisture absorber (12) are accommodated in the same container and, therefore, heat is efficiently transmitted to the moisture absorber (12) at the time of heat radiation from the magnetic thermal storage medium (13). Thus, the moisture absorber (12) can be efficiently regenerated.
- According to an eleventh aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the first aspect of the invention, wherein the magnetic thermal storage unit (10, 16, 50) includes a filter (11) for removing the dust and dirt from the air, and therefore foul outdoor air is prevented from entering the indoor environment.
- According to a twelfth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the eleventh aspect of the invention wherein, in the case where the magnetic thermal storage unit (10, 16, 50) moves to the air path (9), the filter (11) is located upstream of the magnetic thermal storage medium (13) in the air flow, and in the case where the magnetic thermal storage unit (10, 16, 50) moves to the heat exchange path (14), the magnetic thermal storage medium (13) is located upstream of the filter (11) in the air flow. Therefore, the dust and dirt in the air cannot easily flow indoors through the air path (9), and therefore are prevented from flowing indoors while at the same time protecting the magnetic thermal storage medium (13) and the moisture absorber (12). Also, the dust and dirt attached to the filter (11) in the heat exchange path (14) can be discharged outdoors.
- According to a thirteenth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type in the first aspect of the invention, wherein the magnetic thermal storage unit (10, 16, 50) is configured of a first magnetic thermal storage unit (10) and a second magnetic thermal storage unit (16), and with the movement of one of the first magnetic thermal storage unit (10) and the second magnetic thermal storage unit (16) to the air path (9), the other magnetic thermal storage unit moves to the heat exchange path (14). With the movement of the first magnetic thermal storage unit (10) and the second magnetic thermal storage unit (10), therefore, the magnetic thermal storage medium (13) alternates between high temperature state and low temperature state. Thus, the temperature and humidity of the air passing through the air path (9) can be regulated continuously while at the same time making it possible to alternately operate and regenerate the moisture absorber (12).
- According to a fourteenth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type and a vehicle air-conditioning system, wherein the air path (9), the heat exchange path (14), the magnetic thermal storage unit (10, 16, 50) and the magnetic field generating means (17, 28, 37) are arranged in the vehicle in such a manner that a specified internal part of the vehicle is cooled by at least the air passing through the air path (9). Therefore, the invention is applicable to a vehicle air-conditioning system having a simpler structure than the conventional vehicle air-conditioning system configured of a cooling heat exchanger utilizing the gas-liquid phase change and a heating heat exchanger utilizing the waste heat of the engine.
- According to a fifteenth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type and a vehicle air-conditioning system in the fourteenth aspect of the invention, further comprising a boarding will confirming means (65) for confirming the intention of a possible occupant outside the vehicle to board the vehicle, wherein the will of a possible occupant to board the vehicle is confirmed before activating the magnetic thermal storage unit (10, 16, 50) and the magnetic field generating means (27, 28, 37). Then, the compartments of the vehicle can be air-conditioned before the possible occupant boards the vehicle.
- According to a sixteenth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type and a vehicle air-conditioning system in the fourteenth aspect of the invention, further comprising an announcing means (66) for detecting the air-conditioning conditions in the vehicle and announcing outside the vehicle the information on the air-conditioning conditions in the vehicle with the magnetic thermal storage unit (10, 16, 50) and the magnetic field generating means (27, 28, 37) in operation. In this way, the air-conditioning conditions in the vehicle can be announced outside the vehicle. In other words, the uncomfortable temperature and the offensive fan noises in the initial stage of air-conditioning operation can be avoided by the observation from outside the vehicle.
- According to a seventeenth aspect of the invention, there is provided a temperature regulation apparatus of a magnetic thermal storage medium type and a vehicle air-conditioning system in the fourteenth aspect of the invention, further comprising an air-conditioning unit (42, 43) including an evaporator operated by a drive source in the vehicle for cooling the air with the refrigerant, wherein upon detection of an insufficient air-conditioning capability of the air-conditioning system, the magnetic thermal storage unit (10, 16, 50) and the magnetic field generating means (27, 28, 37) are activated. In this way, the temperature regulation apparatus of a magnetic thermal storage medium type can be used as an auxiliary device for the vehicle air-conditioning control system.
- Incidentally, the reference numerals in parentheses, to denote the above means, are intended to show the relationship of the specific means which will be described later in an embodiment of the invention.
- The present invention may be more fully understood from the description of preferred embodiments of the invention set forth below, together with the accompanying drawings.
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FIG. 1 is a sectional view schematically showing a vehicle in longitudinal position according to a first embodiment of the invention. -
FIG. 2 is a perspective view schematically showing first and second magnetic thermal storage units inFIG. 1 . -
FIG. 3 is a perspective view schematically showing a magnetic field generating means inFIG. 1 . -
FIG. 4 is a perspective view schematically showing a magnetic field generating means according to a second embodiment of the invention. -
FIG. 5 is a perspective view schematically showing first and second magnetic thermal storage units according to a third embodiment of the invention. -
FIG. 6 schematically shows the internal structure with a magnetic thermal storage medium and a moisture absorber integrated with each other inFIG. 5 . -
FIG. 7 is a sectional view schematically showing a vehicle in longitudinal position according to a fourth embodiment of the invention. -
FIG. 8 is a sectional view schematically showing a vehicle in longitudinal position according to a fifth embodiment of the invention. -
FIG. 9 is a sectional view schematically showing first and second air paths according to a sixth embodiment of the invention. -
FIG. 10 is a sectional view schematically showing a vehicle in longitudinal position according to a seventh embodiment of the invention. -
FIG. 11 is a diagram showing a general configuration according to an eighth embodiment of the invention. -
FIG. 12 is a diagram showing a general configuration according to a ninth embodiment of the invention. - A first embodiment of the invention is explained below.
FIG. 1 is a sectional view schematically showing anautomotive vehicle 1 in longitudinal position according to the first embodiment of the invention. InFIG. 1 , the arrows indicate the four directions in which the vehicle and the temperature regulation apparatus of a magnetic thermal storage medium type are positioned. The two circles in thevehicle 1 indicatefront tires 2 andrear tires 3, respectively. - A first
outside air inlet 4 for introducing the air into the compartments is formed on the front side of thevehicle 1. Aninside air path 5 through which the air in the compartments circulates is formed on the side rear of the firstoutside air inlet 4 in the vehicle. A first inside-outsideair switching door 6 for switching the air path is arranged between the firstoutside air inlet 4 and theinside air path 5. The first inside-outsideair switching door 6 includes a door revolving means such as a motor not shown and is arranged in a rotatably movable way.FIG. 1 shows the position in which the first inside-outsideair switching door 6 closes theinside air path 5 and opens the firstoutside air inlet 4. - A
first blower 7 is arranged under the firstoutside air inlet 4. Thefirst air blower 7 is adapted to blow the air rearward of the vehicle. Thefirst blower 7 includes afirst blower motor 8 for driving thefirst blower 7. - A
first air path 9 is arranged on the side rear of thefirst blower 7 in the vehicle. The air is supplied into the compartments through thefirst air path 9. A first magneticthermal storage unit 10 for exchanging heat with the air flowing into the compartments is arranged in thefirst air path 9. The first magneticthermal storage unit 10 includes an air path allowing the air to flow back and forth in the direction along the length of the vehicle. In the air path of the first magneticthermal storage unit 10, afilter 11 for removing the dust and dirt contained in the air, amoisture absorber 12 for reducing the humidity of the air and a magneticthermal storage medium 13 having the magneto-caloric effect of increasing the temperature upon magnetization and decreasing the temperature upon demagnetization are arranged in that order from the front to rear side of the vehicle. The magneticthermal storage medium 13 is formed of, for example, gadolinium or the like material. - A
second air path 14 constituting a waste heat path according to the invention is arranged under thefirst air path 9. Thesecond air path 14 is adapted to send the air out of the compartments. A second inside-outsideair switching door 15 operatively interlocked with the first inside-outsideair switching door 6 is arranged on the side rear of thesecond air path 14 in the vehicle. The second inside-outsideair switching door 15 includes a door revolving means such as a motor not shown and is arranged in a rotatably movable way. As long as the second inside-outsideair switching door 15 is at a position to close the compartments side of the second air path 14 (the position indicated by the corrugation in the drawing), the outside air flows in by way of the secondoutside air inlet 29 arranged in thesecond air path 14 and flows toward the front of the vehicle. The secondoutside air inlet 29 is arranged under thesecond air path 14. - The
second air path 14 has arranged therein a second magneticthermal storage unit 16 for exchanging heat with the air flowing out of the compartments. The second magneticthermal storage unit 16, like the first magneticthermal storage unit 10, is adapted to pass the air therethrough. The second magneticthermal storage unit 16, like the first magneticthermal storage unit 10, includes afilter 11, amoisture absorber 12 and a magneticthermal storage medium 13 arranged in that order from the front to rear side of the vehicle. Themoisture absorber 12 and the magneticthermal storage medium 13 are each fixedly arranged on a seat not shown. This seat has a corrugated form, for example. A flat plate is arranged between the corrugated seats. The flat plate is connected to the crests of the wave of the corrugated seats so that the air can flow between the flat plate and the corrugated seats. These seats are arranged in the containers of the magneticthermal storage media 13 of the first and second magneticthermal storage units thermal storage medium 13 may be fixedly arranged in a predetermined shape such as a rectangle or a circle or coated on the seat. As an alternative, the magneticthermal storage medium 13 in a powdered form may be sealed in a thin container. - A
second blower 17 is arranged on the side forward of the second magneticthermal storage unit 16 in the vehicle. Thesecond blower 17 is adapted to send the air in the direction forward of the vehicle. The air thus sent forward of the vehicle is discharged from an air outlet 14 b formed in thesecond air path 14. Thesecond blower 17 includes asecond blower motor 18 for driving thesecond blower 17. A CO2 sensor 19 for measuring the CO2 concentration in the compartments is arranged in the compartments. In addition to the air outlet 14 b, arear air outlet 60 is also arranged in the compartments. Therear air outlet 60 has anair outlet door 61. Theair outlet door 61 is connected rotatably to a servo motor not shown. Theair outlet door 61 is adapted to discharge the air in the case where the second inside-outsideair switching door 15 is in such a position as to close the compartments side of thesecond air path 14 and the first inside-outsideair switching door 6 introduces the outside air. The magnetic field generating means 27, 28 are arranged in the first andsecond air paths - The first magnetic
thermal storage unit 10 and the second magneticthermal storage unit 16 are adapted to slide up and down between thefirst air path 9 and thesecond air path 14. In this slide motion, one of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 moves to thefirst air path 9, for example, while the other magnetic thermal storage unit moves to thesecond air path 14. - The configuration of the first and second magnetic
thermal storage units FIG. 2 . The second magneticthermal storage unit 16 is arranged on the front side of the vehicle, and the first magneticthermal storage unit 10 is arranged on the rear side of the vehicle. The first and second magneticthermal storage units side wire 20 and a driven-side wire 21. - The driven-
side wire 21 is connected to the upper end of each of the first and second magneticthermal storage units side wire 20 is connected to the lower end of each of the first and second magneticthermal storage units - The driving-
side wire 20 is connected to the first and second magneticthermal storage units side rotor 22, and with the rotation of the driving-side rotor 22, moves the first and second magneticthermal storage units side rotor 22 is coupled to adrive shaft 23. With the rotation of thedrive shaft 23, the driving-side rotor 22 is rotated. An end of thedrive shaft 23 is connected to a rotary shaft, not shown, of the drivingmotor 24, and the other end thereof is rotatably supported on a support member not shown. With the rotation of the drivingmotor 24, thedrive shaft 23 is rotated. - The driven-
side wire 21, on the other hand, is connected to the first and second magneticthermal storage units side rotor 25. The driven-side rotor 25 is rotatably held on a driven-side shaft 26, and with the upward or downward motion of the first and second magneticthermal storage units side wire 21. The ends of the driven-side shaft 26 are supported by a support member not shown. - The first and second magnetic
thermal storage units guide units guide units second air paths thermal storage units - The magnetic field generating means for magnetizing the first and second magnetic
thermal storage units FIG. 3 .FIG. 3 schematically illustrates afirst electromagnet 27 and asecond electromagnet 28. Thefirst electromagnet 27 and thesecond electromagnet 28 are each formed in the shape of substantially “U”. The substantially U-shaped opening is arranged in such a position as to cover the outer surface of the first andsecond air paths - The first and
second electromagnets first coil 27 b and asecond coil 28 b including first andsecond iron cores widths second iron cores thermal storage medium 13 than the width of the first and secondthermal storage units thermal storage units thermal storage media 13 of the first and second magneticthermal storage units - Next, the electrical control unit according to this embodiment is explained briefly. A plurality of setting units not shown are arranged in the compartments. The setting units specifically include, though not shown, an inside-outside air switch setting unit, a temperature setting unit, an air capacity setting unit and a blowdown mode setting unit. The
vehicle 1 includes air-conditioning sensors not shown. According to this embodiment, the air-conditioning system is automatically controlled based on the detection values of the air-conditioning sensors. The operating information and the detection values of these sensors are input to a control device not shown. - The control device is configured of a well-known microcomputer such as a CPU, a ROM, a RAM and the peripheral circuits thereof. Each control value is calculated based on the operating information of the occupants and the input values of the air-conditioning sensors. The control device is adapted to output each control value thus calculated to each control unit. The control units include a control unit, not shown, for the
first blower motor 8, a control unit for thefirst coil 27 b or thesecond coil 28 b, and a control unit, not shown, for theservo motor 24. Various control signals include a blower voltage signal for thefirst blower motor 8, an energization signal of thefirst coil 27 b or thesecond coil 28 b and a drive instruction signal for theservo motor 24. - Now, the operation of the first embodiment of the invention will be explained. In response to the inside-outside air switching signal from the control device, the first inside-outside
air switching door 6 rotatively moves to an outside air introducing position where theinside air path 5 is closed and the firstoutside air inlet 4 is open or an inside air circulating position where theinside air path 5 is open and the firstoutside air inlet 4 is closed. The control device sends a signal to both the drive unit of the first inside-outsideair switching door 6 and the drive unit of the second inside-outsideair switching door 15 at the same time. In the case where the first inside-outsideair switching door 6 moves rotatively to the outside air introducing position, for example, the second inside-outsideair switching door 15 opens the path between thesecond air path 14 and the interior of the compartments. With the movement of the first inside-outsideair switching door 6 to the inside air circulating position, on the other hand, the second inside-outsideair switching door 15 moves to the position where the path between thesecond air path 14 and the interior of the compartments is shut off. - The
first blower 7 is driven by thefirst blower motor 8 and sends the air into the compartments. Thefirst blower motor 8 is controlled by a blower voltage signal from the control device. The air from thefirst blower 7 is sent along the direction of arrow X to thefirst air path 9. The air thus blown enters the compartments through the first magneticthermal storage unit 10 or the second magneticthermal storage unit 16. Also, the blown air is passed through thefilter 11, themoisture absorber 12 and the magneticthermal storage medium 13 in that order in thefirst air path 9. In thefilter 11, the dust and dirt in the air can be moved. Eachmoisture absorber 12 dehumidifies the air, and is made of silica gel or zeolite, for example. The magneticthermal storage media 13 can regulate the air temperature. - The
second blower 17 is driven by thesecond blower motor 18 and sends the air from the second air path on the rear side of the vehicle in the direction of arrow Y toward the front side of the vehicle. The air flowing in thesecond air path 14 is discharged out of the compartments through the first magneticthermal storage unit 10 or the second magneticthermal storage unit 16. The air before being discharged is passed through the magneticthermal storage medium 13, themoisture absorber 12 and thefilter 11 in that order in thesecond air path 14. When the air passes through the magneticthermal storage medium 13, heat can be absorbed from or radiated to the air. In the case where heat is radiated to the air, themoisture absorber 12 arranged downstream in the air flow can be heated and therefore can be efficiently regenerated. Also, in view of the fact that the air flows in the direction opposite to the direction in which the dust and dirt are attached to thefilter 11, the surface dust and dirt of thefilter 11 can be removed. - The control device sends a signal to the
first blower 7, thesecond blower 17, the first inside-outsideair switching door 6 and the second inside-outsideair switching door 15 while at the same time sending a control signal to theservo motor 24. Theservo motor 24, upon receipt of the control signal from the control device, rotates in one direction and drives the driving-side rotor 22 until the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 reach predetermined positions in thefirst air path 9 andsecond air path 14, respectively. With the arrival of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 at the predetermined positions in thefirst air path 9 andsecond air path 14, respectively, theservo motor 24 rotates in the opposite direction and drives the driving-side rotor 22 in the opposite direction. By repeating this operation, the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 move alternately to thefirst air path 9 andsecond air path 14. - The electric current is adapted to flow in one of the
first electromagnet 27 of thefirst air path 9 and thesecond electromagnet 28 of thesecond air path 14. In the case where the air temperature in the compartments is lower than the set temperature input to the temperature setting unit, for example, the first electromagnetic 27 is energized. Thus, the magneticthermal storage media 13 of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 are magnetized and heated thereby to heat the air in thefirst air path 9. In the process, the power of thesecond electromagnet 28 is switched off. In the case where the air temperature in the compartments is higher than the set temperature input to the temperature setting unit, on the other hand, heat is absorbed from the air in thefirst air path 9 by energizing thesecond electromagnet 28. In the process, the power of thefirst electromagnet 27 is switched off. - Next, the operation and the effects of the first embodiment of the invention are explained.
- (1) In the case where the first magnetic
thermal storage unit 10 and the second magneticthermal storage unit 16 each include themoisture absorber 12 in addition to the magneticthermal storage medium 13, the dehumidification capability is improved. Also, the sensible heat after dehumidification is lowered in cooling mode, and therefore the cooling effect is improved. Also, the moisture is released from themoisture absorber 12 by the heat of the magneticthermal storage medium 13 in thesecond air path 14 thereby to regenerate themoisture absorber 12. In the heating mode, on the other hand, the reduction in humidity in the compartments can be suppressed by increasing the temperature of themoisture absorber 12. - (2) In the case where the first magnetic
thermal storage unit 10 and the second magneticthermal storage unit 16 each include thefilter 11 in addition to the magneticthermal storage medium 13, the dust and dirt contained in the air blown into the compartments can be removed. Also, in view of the fact that the dust and dirt removed by thefilter 11 are discharged out of the compartments when the first magneticthermal storage unit 10 or the second magneticthermal storage unit 16 moves to thesecond air path 14, the fouling of the air in the compartments can be continuously suppressed while at the same time preventing thefilters 11 from loading. Further, the magneticthermal storage media 13 and themoisture absorbers 12 are protected on the one hand and the offensive odor due to the fouling of thefilters 11 can be suppressed on the other hand. - (3) The first magnetic
thermal storage unit 10 and the second magneticthermal storage unit 16 move up and down alternately, so that the air conditioning operation can be continuously performed. - Next, a second embodiment is explained with reference to
FIG. 4 . According to the first embodiment, the magnetic field generating means includes thefirst electromagnet 27 and thesecond electromagnet 28 arranged outside of thefirst air path 9 and thesecond air path 14, respectively. The second embodiment is different from the first embodiment in that as shown inFIG. 4 ,permanent magnets 37 are rotatably arranged on the outside of thefirst air path 9 and thesecond air path 14.FIG. 4 is a perspective view of thefirst air path 9 and thesecond air path 14. InFIG. 4 , the longitudinal and vertical arrows indicate the directions in which the vehicle is positioned and the direction in which the temperature regulation apparatus of a magnetic thermal storage medium type is mounted on the vehicle. InFIG. 4 , adrive gear 38 is arranged substantially at the middle position in vertical direction of thefirst air path 9 and thesecond air path 14. Adrive shaft 39 is arranged at the central portion of thedrive gear 38. Thedrive shaft 39 is formed as a cylinder. Thedrive shaft 39 is arranged through thefirst air path 9 and thesecond air path 14 from one side surface to the other side surface thereof. Apermanent magnet 37 is arranged on each of one and the other side surfaces of thedrive shaft 39. Thepermanent magnets 37 each are formed as a rectangle, for example. Aworm gear 40 is arranged on the left side of thedrive gear 38 in the page. One end of theworm gear 40 is connected to theservo motor 41, and the other end thereof rotatably supported by asupport member 42. - The operation of the second embodiment is explained. In response to a drive instruction from a control device not shown, the
servo motor 41 is started to rotationally drive theworm gear 40. With the rotation of theworm gear 40, thedrive gear 38 is rotated by theworm gear 40. With the rotation of thedrive gear 38, thedrive shaft 39 is rotated. Thepermanent magnets 37 arranged on thedrive shaft 39 move to the side surface of one of thefirst air path 9 and thesecond air path 14. - The use of the
permanent magnets 37 in place of thefirst electromagnet 27 and thesecond electromagnet 28 in the second embodiment produces the same effect as in the first embodiment. - Next, a third embodiment of the invention is explained with reference to
FIG. 6 . According to the first and second embodiments, themoisture absorber 12 and the magneticthermal storage medium 13 are arranged in juxtaposition with each other in each of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16. According to the third embodiment, however, as shown inFIGS. 5 and 6 , each magnetic thermal storage unit is formed by integrating each magneticthermal storage medium 13 and the correspondingmoisture absorber 12 with each other. InFIGS. 5 and 6 , the longitudinal and vertical arrows designate the directions in which the vehicle is positioned, and the direction in which the temperature regulation apparatus of a magnetic thermal storage medium type is mounted on the vehicle. Also,FIG. 5 shows the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 with each magneticthermal storage medium 13 and the correspondingmoisture absorber 12 integrated with each other.FIG. 6 is a diagram for explaining the internal structure of the magnetic thermal storage unit with the magneticthermal storage media 13 and themoisture absorbers 12 integrated with each other. - As shown in
FIG. 6 , the magneticthermal storage media 13 are arranged on acorresponding seat 40 and each is covered with the correspondingmoisture absorber 12. Theseat 40 is corrugated. A plurality of thecorrugated seats 40 are prepared, and aflat plate 41 for partitioning theseats 40 is arranged between each adjacent seats 40. The air is adapted to flow longitudinally to theseats 40. - According to the third embodiment, as described above, each magnetic
thermal storage medium 13 is covered with themoisture absorber 12 and arranged on thecorresponding seat 40. Theseats 40 configured this way are arranged in the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16. For this reason, the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 according to this embodiment can be reduced in size as compared with the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16, respectively, according to the first and second embodiments. Also, each magneticthermal storage medium 13 and the correspondingmoisture absorber 12 are in direct contact with each other and, therefore, themoisture absorbers 12 can be efficiently regenerated. - Next, a fourth embodiment is explained with reference to
FIG. 7 . According to the first to third embodiments, the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 exchange heat with the blown air to regulate the temperature of the compartments. The fourth embodiment, however, is different from the first to third embodiments in that as shown inFIG. 7 , anevaporator 42 for cooling the air through a refrigerant and aheater core 43 for exchanging heat between the engine cooling water and the passing air are arranged in the compartments apart from the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16.FIG. 7 is a sectional view schematically showing the vehicle in longitudinal position. The longitudinal and vertical arrows inFIG. 7 indicate the directions in which the vehicle is positioned and also the direction of the temperature regulation apparatus of a magnetic thermal storage medium type mounted on the vehicle. - In
FIG. 7 , theevaporator 42 and theheater core 43 are arranged downstream of theblower 7 in the air flow to regulate the temperature of the air supplied to the compartments. - According to the fourth embodiment, the first magnetic
thermal storage unit 10, the second magneticthermal storage unit 16, theevaporator 42 and theheater core 43 are arranged in the compartments, and therefore the conditioned air provides an improved sense of warmth. Also, the visibility is improved against fogging, if any, of the windshield glass of the vehicle. Further, the windshield glass is prevented from fogging during the inside air circulation mode operation in the winter season. - A fifth embodiment of the invention will be explained with reference to
FIG. 8 . In the fourth embodiment, theevaporator 42 and theheater core 43 are arranged upstream of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 in the air flow independently of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16. The fifth embodiment is different from the fourth embodiment in that in the fifth embodiment, theheater core 43 is arranged downstream of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16. The longitudinal and vertical arrows inFIG. 8 indicate the directions in which the vehicle are positioned and also the direction of the temperature regulation apparatus of a magnetic thermal storage medium type mounted on the vehicle. - In
FIG. 8 , theevaporator 42 is arranged downstream of theblower 7 in the air flow, while the first magneticthermal storage unit 10, the second magneticthermal storage unit 16 and theheater core 43 are arranged downstream of theevaporator 42. By doing so, both the cooling capacity and the heating capacity are desirably improved in cooling and heating modes, respectively. - Now, a sixth embodiment is explained with reference to
FIG. 9 . In the first embodiment, thefirst blower 7 and thesecond blower 17 are driven separately from each other by thefirst blower motor 8 and thesecond blower motor 18, respectively. In the sixth embodiment, on the other hand, thefirst blower 7 and thesecond blower 17 are driven at the same time by asingle blower motor 8 as shown inFIG. 9 .FIG. 9 is a sectional view schematically showing thefirst air path 9 and thesecond air path 14 in vertical direction. InFIG. 9 , the longitudinal and vertical arrows indicate the directions in which the vehicle is positioned and also the direction of the temperature regulation apparatus of a magnetic thermal storage medium type mounted on the vehicle. - In
FIG. 9 , thefirst blower 7 and thesecond blower 17 each make up a multiblade tangential fan (cross flow fan) in which the gas passes through a cross section perpendicular to the axis of the impellers. Theblower motor 8 for thefirst blower 7 and thesecond blower 17 is arranged at a position intermediate between thefirst blower 7 and thesecond blower 17. The driving shaft of theblower motor 8 is connected to thefirst blower 7 and thesecond blower 17. As a result, as compared with the first embodiment, the number of blower motors can be decreased on the one hand and the temperature regulation apparatus of a magnetic thermal storage medium type can be reduced in size on the other hand. Also, as thefirst blower 7 and thesecond blower 17 are driven by asingle blower motor 8, the air capacity can be matched between thefirst blower 7 and thesecond blower 17. - Next, a seventh embodiment will be explained with reference to
FIG. 10 . According to the first to sixth embodiments, the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 are arranged to alternate between thefirst air path 9 and thesecond air path 14 thereby to assume two states in which the magneticthermal storage medium 13 is magnetized and demagnetized. The seventh embodiment is different from the first to sixth embodiments in that thefirst air path 9 and thesecond air path 14 are formed by defining a cylindrical pipe longitudinally to the vehicle and a circular magneticthermal storage unit 50 is rotatably movably arranged in the pipe thereby to assume two states including magnetization and demagnetization of the magneticthermal storage medium 13 by rotating the circular magneticthermal storage unit 50. The magneticthermal storage unit 50 is arranged to allow the air to pass therethrough longitudinally to the vehicle. InFIG. 10 , the longitudinal and vertical arrows indicate the directions in which the vehicle is positioned and also the direction in which the temperature regulation apparatus of a magnetic thermal storage medium type is mounted on the vehicle. -
FIG. 10 is a sectional view schematically showing thevehicle 1 in longitudinal position. Thefirst air path 9 and thesecond air path 14 inFIG. 10 are formed by defining a cylindrical pipe running longitudinally of the vehicle. Specifically, apartitioning plate 52 is arranged at the vertically central portion in the cylindrical pipe. Thepartitioning plate 52 is formed with holes, not shown, for establishing communication between thefirst air path 9 and thesecond air path 14. A circular magneticthermal storage unit 50 and amotor 51 for rotatively driving the magneticthermal storage unit 50 are arranged in the communication holes. A rotary shaft not shown is arranged at the central portion of the circle of the magneticthermal storage unit 50 longitudinally of the vehicle. The part of the rotary shaft on the rear side of the vehicle is coupled to the drive shaft, not shown, of themotor 51. The part of the rotary shaft on the front side of the vehicle, on the other hand, is rotatably supported on a support member not shown. Themotor 51 may alternatively be arranged on the part of the magneticthermal storage unit 50 on either the front side or the rear side of the vehicle. - According to the seventh embodiment, as in the first to sixth embodiments, the first magnetic
thermal storage unit 10 and the second magneticthermal storage unit 16 need not be moved vertically and, therefore, the configuration is simplified as compared with the first to sixth embodiments. Also, the magnetic field can be reduced in size more in the case where the magneticthermal storage unit 50 is magnetized than in the case where the magneticthermal storage media 13 of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 are magnetized in the first to sixth embodiments. Further, unlike the first to sixth embodiments in which the internal pressure and hence the blowdown air capacity undergoes a change with the up and down movement of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16, the seventh embodiment involves a smaller change in the internal pressure resulting in a smaller change in air capacity. - Now, an eighth embodiment will be explained with reference to
FIG. 11 . Unlike the first to seventh embodiments comprising the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 or the magneticthermal storage unit 50 arranged in a vehicle, the eighth embodiment comprises the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16 arranged in an indoor environment as shown inFIG. 11 . The indoor environment is indicative of the interior of a warehouse, a building, a computer room, a residential house or the like. Like in the seventh embodiment, the circular magneticthermal storage unit 50 may be rotatably arranged in thefirst air path 9 and thesecond air path 14. Also, thefirst air path 9 and thesecond air path 14 are formed as cylindrical pipes for the arrangement of the magneticthermal storage unit 50 according to the seventh embodiment.FIG. 11 is a cross sectional view schematically showing the indoor environment in one direction. InFIG. 11 , theindoor environment 30 is arranged on the right side in the page, and air paths for theindoor environment 30 are arranged on the left side in the page. These air paths include afirst air path 9 for introducing the air into the indoor environment from outside and asecond air path 14 for discharging the air out of the indoor environment. - The
first air path 9 has arranged therein ablower 7 for sending the outdoor air into the indoor environment and ablower motor 8 for driving theblower 7. Thesecond air path 14 is arranged above thefirst air path 9. Thefirst air path 9 and thesecond air path 14 have arranged therein the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16, respectively, vertically movably. Apermanent magnet 37 is arranged under thefirst air path 9. Thepermanent magnet 37 is arranged in such a manner that the magnetic field covers the entire area of the magneticthermal storage media 13 of the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16. By doing so, the indoor heating operation can be performed. - According to the eighth embodiment, the first magnetic
thermal storage unit 10 and the second magneticthermal storage unit 16 are arranged in the indoor environment, and therefore the same effects as the first embodiment are produced also in the indoor space. Instead of thepermanent magnet 37, afirst electromagnet 27 and asecond electromagnet 28 may be arranged as a magnetic field generating means. Also, thepermanent magnet 37 arranged under thefirst air path 9 for the heating operation may be removed and arranged above thesecond air path 14 for the cooling operation. - Next, a ninth embodiment of the invention will be explained with reference to
FIG. 12 . The ninth embodiment, as shown inFIG. 12 , comprises a means to confirm the will of a possible occupant including aremote control unit 65 operable at a place distant from the vehicle by a possible occupant and a receivingunit 67 for receiving an operation signal from theremote control unit 65. The receivingunit 67 is included in acontrol device 62 for controlling the various devices. According to the ninth embodiment, anindication lamp 66 indicates the air condition in the indoor environment. Thus, thisindication lamp 66 is capable of indicating the information corresponding to the temperature change in the indoor environment.FIG. 12 is a sectional view schematically a vehicle in longitudinal position. InFIG. 12 , the longitudinal and vertical arrows indicate the directions in which the vehicle is positioned and also the direction in which the temperature regulation apparatus of a magnetic thermal storage medium type is mounted on the vehicle. - An electrical control unit according to this embodiment is explained briefly with reference to
FIG. 12 . Acontrol device 62 for controlling the various devices is arranged in the compartments. Thecontrol device 62 is adapted to output a control signal to each device in response to at least an input signal from an insideair temperature sensor 63, a temperature Tset set on thetemperature setting unit 64 by an occupant, an input signal from a CO2 sensor 19 or an input signal from a remote control unit 65 (such as a remote control key) for confirming the will of the possible occupant. Each device receives and is controlled by these control signals through a dedicated control unit. The control signals include a control signal applied to thecontrol unit 8 a of theblower motor 8, a control signal applied to the servomotor control unit 6 b of thedoor shafts servo motor 24, a control signal applied to thecontrol units first electromagnet 27 and thesecond electromagnet 28 and the control signal applied to acontrol unit 66 a of theindication lamp 66. - Of all these control signals, the control signal output to the
control unit 66 a of theindication lamp 66 makes it possible to indicate various air conditions in the compartments by different colors. As a specific example, theindication lamp 66 is lit in red in the case where the compartments are so cold or hot that the possible occupant may feel discomfortable, yellow in the case where the temperature in the compartments may be rather discomfortable to the possible occupant, and green in the case where the temperature in the compartments is considered to have reached a degree comfortable to the possible occupant. - According to the ninth embodiment, a control signal is output to each device in response to an input signal from the
remote control unit 65 and, therefore, the vehicle can be air-conditioned before a possible occupant boards the vehicle. Thus, the possible occupant can start the air-conditioning system without entering the compartment. Also, the provision of theindication lamp 66 which is lit in different ways in accordance with the indoor air condition of the compartments makes it possible to inform the possible occupant of the current air condition. Therefore, uncomfortable temperature and the annoying fan noises, in the initial state of the air conditioning operation, can be avoided by observation from outside the vehicle. - Finally, other embodiments of the invention are explained.
- (1) According to the first to ninth embodiments, air is passed through the
second air path 14 to exchange heat between the first magneticthermal storage unit 10 or the second magneticthermal storage unit 16 and the air. As an alternative, water is circulated in the heat exchange circuit arranged in thesecond air path 14, so that heat is exchanged between the water and the first magneticthermal storage unit 10 or the second magneticthermal storage unit 16. - (2) According to the first to ninth embodiments, the
filter 11, themoisture absorber 12 and the magneticthermal storage medium 13 are arranged in that order from the air upstream side of thefirst air path 9 in the first magneticthermal storage unit 10 and the second magneticthermal storage unit 16. As an alternative, the arrangement may be thefilter 11, the magneticthermal storage medium 13 and themoisture absorber 12 in that order. - (3) According to the seventh embodiment, the
motor 51 is arranged at the center of the magneticthermal storage unit 50 thereby to rotate the magneticthermal storage unit 50. As an alternative, a gear is formed on the outer periphery of the magneticthermal storage unit 50 and driven by another gear formed on themotor 51 thereby to rotate the magneticthermal storage unit 50. - (4) According to the ninth embodiment, the
indication lamp 66 is arranged to indicate the air condition in the compartments. As an alternative, the air condition may be indicated by voice. - While the invention has been described by reference to specific embodiments chosen for purposes of illustration, it should be apparent that numerous modifications could be made thereto by those skilled in the art without departing from the basic concept and scope of the invention.
Claims (17)
1. A temperature regulation apparatus of a magnetic thermal storage medium type comprising:
an air path (9) through which the air is allowed to flow;
a heat exchange path (14) through which a heat exchanging fluid is allowed to flow;
at least a magnetic thermal storage unit (10, 16, 50) including a magnetic thermal storage medium (13) which increases to high temperature due to the magneto-caloric effect when magnetized and decreases to low temperature when demagnetized; and
a magnetic field generating means (27, 28, 37) for generating a magnetic field in selected one of said air path (9) and said heat exchange path (14);
wherein said magnetic thermal storage unit (10, 16, 50) is movable to said air path (9) and said heat exchange path (14);
wherein with the movement of said magnetic thermal storage unit (10, 16, 50) to said air path (9), said magnetic thermal storage medium (13) is set in one of said high temperature state and said low temperature state depending on selected one of magnetization and demagnetization of said magnetic field generating means (27, 28, 37), while, with the movement of said magnetic thermal storage unit (10, 16, 50) to said heat exchange path (14), said magnetic thermal storage medium (13) is set in the other of said high temperature state and said low temperature state depending on selected one of magnetization and demagnetization of said magnetic field generating means (27, 28, 37); and
wherein, in the case where said magnetic thermal storage unit (10, 16, 50) moves to said air path (9) and said magnetic thermal storage medium (13) is set in said high temperature state, heat is radiated to said air while in the case where said magnetic thermal storage unit (10, 16, 50) moves to said air path (9) and said magnetic thermal storage medium (13) is set in said low temperature state, heat is absorbed from said air.
2. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 1 ,
wherein said magnetic field generating means (27, 28, 37) is arranged in said air path (9) and said heat exchanging path (14).
3. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 1 ,
wherein said magnetic field generating means (27, 28, 37) is adapted to move to selected one of said air path (9) and said heat exchange path (14).
4. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 1 ,
wherein said heat exchanging fluid is the air, and said magnetic thermal storage unit (10, 16, 50) is integrated with a moisture absorber (12) for absorbing the moisture from the air.
5. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 1 ,
wherein said air path (9), said heat exchange path (14), said magnetic thermal storage unit (10, 16, 50) and said magnetic field generating means (27, 28, 37) are arranged in an automotive vehicle,
said apparatus further comprising a first outside air inlet (4) for introducing the air from outside said vehicle to said air path (9), an inside air path (5) for introducing the air in said vehicle to said air path (9), and a first inside-outside air switching door (6) arranged upstream of said air path (9) in the air flow for switching said outside air and said inside air, and
wherein the air flows into said air path (9) from said first outside air inlet (4) to thereby control the air condition in the compartments of said vehicle when said first inside-outside air switching door (6) turns to the outside air introduction side.
6. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 5 , further comprising:
a first blower (7) for sending a selected one of said outside air and said inside air to said air path (9);
a second outside air inlet (29) for introducing the outside air to said heat exchange path (14);
an inside air inlet (14 a) for introducing the inside air to said heat exchange path (14);
an air outlet (14 b) for discharging the air from said heat exchange path (14);
a second inside-outside air switching door (15) for switching between the inside air from said inside air inlet (14 a) and the outside air from said second outside air inlet (29); and
a second blower (17) for sending a selected one of said outside air and said inside air from said heat exchange path (14) to said air outlet (14 b).
7. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 6 ,
wherein, said second blower (17) and said first blower (7) are arranged adjacently to each other.
8. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 4 ,
wherein the movement of said magnetic thermal storage unit (10, 16, 50) to said air path (9) sets said magnetic thermal storage medium (13) in said low temperature state, and the movement of said magnetic thermal storage unit (10, 16, 50) to said heat exchange path (14) sets said magnetic thermal storage medium (13) in said high temperature state, and
wherein, with the movement of said magnetic thermal storage unit (10, 16, 50) to said air path (9), said moisture absorber (12) is located upstream of said magnetic thermal storage unit (10, 16, 50) in the air flow and said magnetic thermal storage medium (13) is located downstream of said magnetic thermal storage unit (10, 16, 50) in the air flow, while with the movement of said magnetic thermal storage unit (10, 16, 50) to said heat exchange path (14), said magnetic thermal storage medium (13) is located upstream of said magnetic thermal storage unit (10, 16, 50) in the air flow and said moisture absorber (12) is located downstream of said magnetic thermal storage unit (10, 16, 50) in the air flow.
9. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 4 ,
wherein the movement of said magnetic thermal storage unit (10, 16, 50) to said air path (9) sets said magnetic thermal storage medium (13) in said high temperature state, and the movement of said magnetic thermal storage unit (10, 16, 50) to said heat exchange path (14) sets said magnetic thermal storage medium (13) in said low temperature state,
wherein with the movement of said magnetic thermal storage unit (10, 16, 50) to said air path (9), said magnetic thermal storage medium (13) is located upstream of said magnetic thermal storage unit (10, 16, 50) in the air flow and said moisture absorber (12) is located downstream of said magnetic thermal storage unit (10, 16, 50) in the air flow, while with the movement of said magnetic thermal storage unit (10, 16, 50) to said heat exchange path (14), said moisture absorber (12) is located upstream of said magnetic thermal storage unit (10, 16, 50) in the air flow and said magnetic thermal storage medium (13) is located downstream of said magnetic thermal storage unit (10, 16, 50) in the air flow.
10. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 4 ,
wherein said magnetic thermal storage medium (13) and said moisture absorber (12) are accommodated in the same container.
11. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 1 ,
wherein said magnetic thermal storage unit (10, 16, 50) includes a filter (11) for removing dust and dirt from the air.
12. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 11 ,
wherein with the movement of said magnetic thermal storage unit (10, 16, 50) to said air path (9), said filter (11) is located upstream of said magnetic thermal storage unit (10, 16, 50) in the air flow and said magnetic thermal storage medium (13) is located downstream of said magnetic thermal storage unit (10, 16, 50) in the air flow, while with the movement of said magnetic thermal storage unit (10, 16, 50) to said heat exchange path (14), said magnetic thermal storage medium (13) is located upstream of said magnetic thermal storage unit (10, 16, 50) in the air flow and said filter (11) is located downstream of said magnetic thermal storage unit (10, 16, 50) in the air flow.
13. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 1 ,
wherein said magnetic thermal storage unit (10, 16, 50) includes a first magnetic thermal storage unit (10) and a second magnetic thermal storage unit (16),
wherein with the movement of one of said first magnetic thermal storage unit (10) and said second magnetic thermal storage unit (16) to said air path (9), the other of said first magnetic thermal storage unit (10) and said second magnetic thermal storage unit (16) moves to said heat exchange path (14), and
wherein said magnetic thermal storage medium (13) alternates between said high temperature state and said low temperature state in accordance with the movement of said first magnetic thermal storage unit (10) and said second magnetic thermal storage unit (16).
14. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 1 ,
wherein said air path (9), said heat exchange path (14), said magnetic thermal storage unit (10, 16, 50) and said magnetic field generating means (27, 28, 37) are arranged in a vehicle to cool a specific portion of the interior of said vehicle at least by the air passing through said air path (9).
15. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 14 , further comprising:
a boarding will confirming means (65) for confirming the will of a possible occupant outside a vehicle to board said vehicle,
wherein when a possible occupant is confirmed to board said vehicle by said means (65), said magnetic thermal storage unit (10, 16, 50) and said magnetic field generating means (27, 28, 37) are activated.
16. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 14 , further comprising:
announcing means (66) for detecting the control of the air-conditioning operation in said vehicle with said magnetic thermal storage unit (10, 16, 50) and said magnetic field generating means (27, 28, 37) activated and announcing, externally to the vehicle, the information corresponding to said control of the air-conditioning operation.
17. A temperature regulation apparatus of a magnetic thermal storage medium type according to claim 14 , further comprising:
an air-conditioning unit (42, 43) including an evaporator activated by an internal drive source of the vehicle for cooling the air through a refrigerant,
wherein, upon detection that the air-conditioning capacity of said air-conditioning device is insufficient, said magnetic thermal storage unit (10, 16, 50) and said magnetic field generating means (27, 28, 37) are activated.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003280825A JP2005049005A (en) | 2003-07-28 | 2003-07-28 | Magnetic heat storage material type temperature adjusting device and vehicular air conditioner |
JP2003-280825 | 2003-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050022538A1 true US20050022538A1 (en) | 2005-02-03 |
Family
ID=34100899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/899,730 Abandoned US20050022538A1 (en) | 2003-07-28 | 2004-07-27 | Temperature regulation apparatus of magnetic thermal storage medium type and vehicle air-conditioning system |
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JP (1) | JP2005049005A (en) |
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WO2007110066A3 (en) * | 2006-03-29 | 2007-11-22 | Webasto Ag | Device for cooling air using the magnetocalorific effect |
US20090064686A1 (en) * | 2007-09-10 | 2009-03-12 | Whirlpool Corporation | Quick thaw/quick chill refrigerated compartment |
US20110215713A1 (en) * | 2010-03-08 | 2011-09-08 | Samsung Mobile Co., Ltd. | Display apparatus including sealing unit |
US9631842B1 (en) * | 2011-11-30 | 2017-04-25 | EMC IP Holding Company LLC | Magneto-caloric cooling system |
CN106642569A (en) * | 2016-12-15 | 2017-05-10 | 青岛海信日立空调系统有限公司 | Air-conditioner system and control method based on pyromagnetic electricity generation |
US9709303B1 (en) * | 2011-11-30 | 2017-07-18 | EMC IP Holding Company LLC | Magneto-caloric cooling system |
US20170203631A1 (en) * | 2016-01-18 | 2017-07-20 | Hanon Systems | Air conditioning system for vehicle |
DE102016224923A1 (en) * | 2016-12-14 | 2018-06-14 | Bayerische Motoren Werke Aktiengesellschaft | Cooling device, use of such a cooling device for a mobile application and method of operating such a cooling device |
FR3111588A1 (en) * | 2020-06-17 | 2021-12-24 | Renault | Device for air drying a motor vehicle interior. |
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KR101433342B1 (en) * | 2008-04-29 | 2014-08-22 | 한라비스테온공조 주식회사 | Cooling system for vehicles using magnetic cooling |
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