US20140109606A1 - Referigerant-to-air device - Google Patents
Referigerant-to-air device Download PDFInfo
- Publication number
- US20140109606A1 US20140109606A1 US14/061,167 US201314061167A US2014109606A1 US 20140109606 A1 US20140109606 A1 US 20140109606A1 US 201314061167 A US201314061167 A US 201314061167A US 2014109606 A1 US2014109606 A1 US 2014109606A1
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- US
- United States
- Prior art keywords
- fan
- wattage
- pressure
- sensor
- ecmu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
-
- 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
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
-
- 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
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- 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
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
Definitions
- the present invention relates to the field of a refrigerant-to-air device that works in conjunction with earth-coupled heat pumps, to dissipate a portion of the heat otherwise intended to be rejected in the earth.
- FIG. 1 is a diagram of the components, the refrigerant circuit, and the electrical connections.
- FIG. 1 the parts are numbered as follows:
- the unwanted heat is absorbed by the refrigerant in the evaporator 19 .
- the refrigerant is then drawn through Active Charge Control (ACC) 21 , and on to the compressor 10 , via conduits 20 and 22 .
- ACC Active Charge Control
- the hot compressed vapor then leaves the compressor through conduit 11 to the Auxiliary Cooling Module (ACM) 12 .
- ACM removes superheat from the refrigerant vapor, and the heated vapor proceeds onward to earth loop 14 and 15 , where the remaining heat is dissipated within the earth 28 , where the vapor is condensed back to liquid refrigerant.
- the liquid then flows via conduit 16 to the Liquid Flow Control (LFC) 17 , which regulates the amount of refrigerant required by the evaporator 19 .
- the refrigerant then flows on to the evaporator 19 via conduit 18 to complete the cycle.
- the LFC 17 and the ACC 21 work in concert to require the condenser (earth loop 14 , and 15 ) to be fully condensing and the evaporator 19 fully wetted, such that all inactive liquid refrigerant resides in the ACC, and an optimum amount of refrigerant is in active circulation under all operating conditions, and the ACC provides storage for inactive liquid refrigerant to provide for all operating conditions, plus any desired amount of reserve refrigerant charge.
- Pressure sensor 30 transmits a pressure signal via wiring 24 to The Electronic Motor Control Unit (EMCU) 27
- EMCU 27 or temperature sensor 29 transmits a temperature signal via wiring 23 to the EMCU 27 .
- the purpose of the EMCU 27 is to turn the fan motor 51 on or off and modulate the electrical power that enters the EMCU by power entrance cable 26 and then flows from the EMCU via power cable 25 to a fan within the ACM 12 .
- an electronic control within the EMCU is an electronic control (not shown), that uses pressure or temperature signals to regulate the speed of the fan motor 51 by controlling the amount of electrical power that flows on to the fan within the ACM.
- the electronic control modules are off-the-shelf modules that are generally readily available, leaving no need to describe the details of such modules.
- the amount of power delivered to the fan may vary from zero (off) to full power, thus allowing the ACM 12 to remove the optimum amount of unwanted heat from the hot vapor, to achieve a predictable system capacity and efficiency. Improving efficiency by use of the ACM can allow fewer earth loops for a given system capacity, which can result in a reduced overall system cost.
- the LFC 17 may be replaced with other expansion devices such as a capillary tube, TXV (Thermostatic expansion valve), or a fixed orifice, and the ACC 21 may be replaced with a liquid/vapor separator such as an accumulator.
- TXV Thermostatic expansion valve
- a liquid/vapor separator such as an accumulator.
- the Fan coil 35 receives hot vapor at inlet manifold 36 , then the hot vapor flows through multiple tubes 38 , where air blowing between the tubes absorbs and removes heat.
- the tubes may be finned (not shown) for maximum heat removal.
- the vapor flows from the tubes into outlet manifold 37 , and exits the Fan coil at exit stub 39 .
- FIG. 3 is a side view of Fan and Fan coil 50 , viewed from the exit manifold 37 side of the Fan coil.
- the fan motor 51 rotates the fan blades 53 , to force air through the fan coil 35 ( FIG. 2 ).
- the refrigerant vapor exits the fan coil at exit stub 39 .
- FIG. 4 another embodiment of the invention dissipates the unwanted heat into the earth by way of a heat exchanger 31 and water loop circuit.
- the hot vapor leaving the ACM 12 is conveyed via conduit 12 to the primary side of heat exchanger 31 , wherein the vapor is condensed back to a liquid and the liquid refrigerant proceeds via conduit 16 to the expansion valve 17 , to complete the cycle.
- the unwanted heat is transferred to the secondary side of the heat exchanger.
- a water loop circuit consists of the secondary side of the heat exchanger 31 , a circulating pump 32 , and underground water loop 33 .
- the pump 32 circulates water, or glycol or some other liquid through the circuit, thereby transferring the unwanted heat into the earth 28 .
- FIG. 5 Yet another embodiment of the invention is shown in FIG. 5 . All the components in FIG. 4 remain, and components 34 , 35 , 36 , and 37 are added.
- the function of holding the compressor output temperature and/or pressure to or below a desired limit is provided by automatically or manually controlling the speed of the fan motor 51 .
- the configuration of FIG. 5 further provides the function of automatically controlling the fan to a speed that results in the lowest power consumption incurred by the system.
- Power for the system enters through power cable 34 , and proceeds through wattage sensor 35 to the EMCU 27 via electric power cable 26 , and to the compressor 10 , via power cable 37 .
- Wattage sensor 35 then sends a signal representing the total power usage to the EMCU via wiring 36 .
- the EMCU is set to maintain a fan speed that gives the lowest system wattage input.
- the EMCU will then respond to control the fan such that the desired limit is not exceeded.
- the AMCU will adjust the fan speed to a speed that reduces the total wattage to the system to a minimum, but not to a speed that allows the temperature or pressure to rise above the desired limits.
Abstract
A refrigerant system includes a compressor, an evaporator, an expansion valve, an accumulator or equivalent, one or more earth loops, and auxiliary heat removal means. The auxiliary means comprises a fan and fan coil and the fan forces air between multiple tubes of the fan coil to remove unwanted heat from the hot vapor exiting the compressor.
Description
- This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/717,353, filed on Oct. 23, 2012 the contents of which are herein incorporated by reference their entirety.
- The present invention relates to the field of a refrigerant-to-air device that works in conjunction with earth-coupled heat pumps, to dissipate a portion of the heat otherwise intended to be rejected in the earth.
-
FIG. 1 is a diagram of the components, the refrigerant circuit, and the electrical connections. - In
FIG. 1 , the parts are numbered as follows: -
- 10 . . . Compressor
- 12 . . . Auxiliary Cooling Module (ACM)
- 27 . . . Electronic Motor Control Unit (EMCU)
- 11, 13, 16, 18, 20, and 22 . . . Refrigerant conduits
- 14 and 15 . . . Earth loop conduits
- 17 . . . Expansion Valve or Liquid Flow Control
- 19 . . . Evaporator
- 21 . . . Accumulator or Active Charge Control
- 29 . . . Temperature Sensor
- 30 . . . Pressure Sensor
- 23 . . . Wiring from temperature sensor to EMCU
- 24 . . . Wiring from pressure sensor to EMCU
- 25 . . . Power cable from the EMCU to blower inside the ACM
- 28 . . . Surface of Earth.
- In
FIG. 2 , the parts are numbered as follows: -
- 35 . . . Fan coil
- 36 . . . Inlet manifold
- 37 . . . Outlet manifold
- 38 . . . Refrigerant tubing
- 39 . . . Refrigerant outlet
- In
FIG. 3 , the parts are numbered as follows: -
- 50 . . . Fan and Fan coil arrangement
- 51 . . . Fan motor
- 53 . . . Fan blades
- 37 . . . Side view of Fan coil outlet manifold
- 39 . . . Fan coil outlet.
- In
FIG. 4 , additional parts are: -
- 31 . . . Refrigerant-to-water heat exchanger
- 32 . . . Water circulating pump
- 33 . . . Underground water loop
- In
FIG. 5 , additional parts are: -
- 36 . . . Power cable from wattage sensor to EMCU
- 34 . . . Power inlet cable
- 35 . . . Wattage sensor
- 36 . . . Wiring from wattage sensor to EMCU
- 37 . . . Power cable from wattage sensor to compressor
- The operation of the system is a follows:
- With reference to
FIG. 1 , the unwanted heat is absorbed by the refrigerant in theevaporator 19. The refrigerant is then drawn through Active Charge Control (ACC) 21, and on to thecompressor 10, viaconduits conduit 11 to the Auxiliary Cooling Module (ACM) 12. The ACM removes superheat from the refrigerant vapor, and the heated vapor proceeds onward toearth loop earth 28, where the vapor is condensed back to liquid refrigerant. The liquid then flows viaconduit 16 to the Liquid Flow Control (LFC) 17, which regulates the amount of refrigerant required by theevaporator 19. The refrigerant then flows on to theevaporator 19 viaconduit 18 to complete the cycle. TheLFC 17 and theACC 21 work in concert to require the condenser (earth loop 14, and 15) to be fully condensing and theevaporator 19 fully wetted, such that all inactive liquid refrigerant resides in the ACC, and an optimum amount of refrigerant is in active circulation under all operating conditions, and the ACC provides storage for inactive liquid refrigerant to provide for all operating conditions, plus any desired amount of reserve refrigerant charge. -
Pressure sensor 30 transmits a pressure signal viawiring 24 to The Electronic Motor Control Unit (EMCU) 27, ortemperature sensor 29 transmits a temperature signal viawiring 23 to theEMCU 27. The purpose of theEMCU 27 is to turn thefan motor 51 on or off and modulate the electrical power that enters the EMCU bypower entrance cable 26 and then flows from the EMCU viapower cable 25 to a fan within theACM 12. Within the EMCU is an electronic control (not shown), that uses pressure or temperature signals to regulate the speed of thefan motor 51 by controlling the amount of electrical power that flows on to the fan within the ACM. The electronic control modules are off-the-shelf modules that are generally readily available, leaving no need to describe the details of such modules. The amount of power delivered to the fan may vary from zero (off) to full power, thus allowing theACM 12 to remove the optimum amount of unwanted heat from the hot vapor, to achieve a predictable system capacity and efficiency. Improving efficiency by use of the ACM can allow fewer earth loops for a given system capacity, which can result in a reduced overall system cost. - Alternatively, the
LFC 17 may be replaced with other expansion devices such as a capillary tube, TXV (Thermostatic expansion valve), or a fixed orifice, and theACC 21 may be replaced with a liquid/vapor separator such as an accumulator. For a system with these refrigerant controls, it is necessary to calculate a fixed refrigerant charge for the system, the amount of charge that will provide the best average efficiency as the systems operates through the whole range of operating conditions. - With reference to
FIG. 2 , theFan coil 35 receives hot vapor atinlet manifold 36, then the hot vapor flows throughmultiple tubes 38, where air blowing between the tubes absorbs and removes heat. The tubes may be finned (not shown) for maximum heat removal. The vapor flows from the tubes intooutlet manifold 37, and exits the Fan coil atexit stub 39. -
FIG. 3 is a side view of Fan andFan coil 50, viewed from theexit manifold 37 side of the Fan coil. Thefan motor 51 rotates thefan blades 53, to force air through the fan coil 35 (FIG. 2 ). The refrigerant vapor exits the fan coil atexit stub 39. - With reference to
FIG. 4 , another embodiment of the invention dissipates the unwanted heat into the earth by way of aheat exchanger 31 and water loop circuit. In this configuration, the hot vapor leaving theACM 12 is conveyed viaconduit 12 to the primary side ofheat exchanger 31, wherein the vapor is condensed back to a liquid and the liquid refrigerant proceeds viaconduit 16 to theexpansion valve 17, to complete the cycle. The unwanted heat is transferred to the secondary side of the heat exchanger. A water loop circuit consists of the secondary side of theheat exchanger 31, a circulatingpump 32, andunderground water loop 33. Thepump 32 circulates water, or glycol or some other liquid through the circuit, thereby transferring the unwanted heat into theearth 28. - Yet another embodiment of the invention is shown in
FIG. 5 . All the components inFIG. 4 remain, andcomponents FIGS. 1 and 4 , the function of holding the compressor output temperature and/or pressure to or below a desired limit, is provided by automatically or manually controlling the speed of thefan motor 51. The configuration ofFIG. 5 further provides the function of automatically controlling the fan to a speed that results in the lowest power consumption incurred by the system. Power for the system enters throughpower cable 34, and proceeds throughwattage sensor 35 to theEMCU 27 viaelectric power cable 26, and to thecompressor 10, viapower cable 37.Wattage sensor 35 then sends a signal representing the total power usage to the EMCU viawiring 36. - With this configuration, the EMCU is set to maintain a fan speed that gives the lowest system wattage input. When the pressure and/or temperature sensor reaches the desired limit, the EMCU will then respond to control the fan such that the desired limit is not exceeded. When the pressure and temperature are below the set limit, the AMCU will adjust the fan speed to a speed that reduces the total wattage to the system to a minimum, but not to a speed that allows the temperature or pressure to rise above the desired limits.
Claims (10)
1. A refrigerant system including a compressor, an evaporator, an expansion valve, an accumulator or equivalent, one or more earth loops, and auxiliary heat removal means, wherein said auxiliary means comprises a fan and fan coil wherein the fan forces air between multiple tubes of the fan coil to remove unwanted heat from the hot vapor exiting the compressor.
2. The system of claim 1 further comprising a manual on-off switch for controlling the fan motor.
3. The system of claim 1 , further providing means to automatically control the speed of the fan to modulate the amount of heat to be removed, said means including a pressure sensor and/or a temperature sensor mounted on the hot vapor conduit leaving the compressor and sending pressure and/or temperature signals to a conventional Electronic Motor Control Unit (EMCU) that regulates electrical power input to the fan in the auxiliary cooling module in response to the pressure or temperature signals, to provide that the pressure or temperature of the hot vapor conduit does not exceed a desired limit.
4. A refrigerant system comprising a compressor, an evaporator, a condenser, a Liquid Flow Control (LFC), an Active Charge Control (ACC), an ACM, and an EMCU, and one or more of a refrigerant earth loop or a water earth loop, wherein the ACM and EMCU serve to prevent the temperature or pressure from exceeding the desired limit, and wherein the LFC serves to maintain the condenser, herein consisting of the earth loop(s), in a fully condensing condition, and wherein the ACC serves to maintain the evaporator in a “fully wetted” condition, with the result that the LFC and ACC, working in concert serve to collect and store all inactive, non-circulating liquid refrigerant within the ACC, to provide that the optimum amount of refrigerant is in active circulation under all operating conditions, which in turn provides improved system efficiency.
5. A refrigerant system comprising a compressor, an evaporator, an expansion valve, an accumulator, an Auxiliary Cooling Module (ACM), a heat exchanger, a pump, and one or more water loops buried within the earth, and further comprising a conventional electronic control module (ECMU) to automatically control the speed of the fan in the ACM to modulate the amount of heat to be removed, and wherein a pressure sensor and/or a temperature sensor mounted on the hot vapor conduit leaving the compressor sends pressure and/or temperature signals to the ECMU, to regulate the electrical power input to the fan in the ACM in response to the pressure or temperature signals, to regulate the amount of heat removed by the Auxiliary Cooling Module, to thereby prevent exceeding the desired pressure or temperature limit.
6. The system of claim 5 wherein the expansion valve is an LFC and the Accumulator is an ACC, and wherein the LFC and ACC work in concert to require all non-circulating liquid refrigerant to be stored in the ACC, to provide that an optimum amount of refrigerant is in active circulation during the full range of operating conditions.
7. The system of claim 3 , further comprising wattage minimizing means, wherein said means consist of wattage sensor which measures the total wattage consumed by the system, and wherein the signal from the sensor is connected to the ECMU, and the ECMU is set to adjust the fan speed to minimize the total wattage drawn by the system, while preventing the compressor outlet conduit temperature or pressure from exceeding a desired limit.
8. The system of claim 4 , further comprising wattage minimizing means, wherein said means consist of wattage sensor which measures the total wattage consumed by the system, and wherein the signal from the sensor is connected to the ECMU, and the ECMU is set to adjust the fan speed to minimize the total wattage drawn by the system, while preventing the compressor outlet conduit temperature or pressure from exceeding a desired limit.
9. The system of claim 5 , further comprising wattage minimizing means, wherein said means consist of wattage sensor which measures the total wattage consumed by the system, and wherein the signal from the sensor is connected to the ECMU, and the ECMU is set to adjust the fan speed to minimize the total wattage drawn by the system, while preventing the compressor outlet conduit temperature or pressure from exceeding a desired limit.
10. The system of claim 6 , further comprising wattage minimizing means, wherein said means consist of wattage sensor which measures the total wattage consumed by the system, and wherein the signal from the sensor is connected to the ECMU, and the ECMU is set to adjust the fan speed to minimize the total wattage drawn by the system, while preventing the compressor outlet conduit temperature or pressure from exceeding a desired limit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/061,167 US20140109606A1 (en) | 2012-10-23 | 2013-10-23 | Referigerant-to-air device |
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US201261717353P | 2012-10-23 | 2012-10-23 | |
US14/061,167 US20140109606A1 (en) | 2012-10-23 | 2013-10-23 | Referigerant-to-air device |
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US20140109606A1 true US20140109606A1 (en) | 2014-04-24 |
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US14/061,167 Abandoned US20140109606A1 (en) | 2012-10-23 | 2013-10-23 | Referigerant-to-air device |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4920757A (en) * | 1988-08-18 | 1990-05-01 | Jimmy Gazes | Geothermal heating and air conditioning system |
US5461876A (en) * | 1994-06-29 | 1995-10-31 | Dressler; William E. | Combined ambient-air and earth exchange heat pump system |
US20070119208A1 (en) * | 2005-10-20 | 2007-05-31 | Ecr Technologies, Inc. | Refrigerant Fluid Flow Control Device and Method |
US20080078191A1 (en) * | 2006-09-29 | 2008-04-03 | Fujitsu General Limited | Rotary compressor and heat pump system |
US8713952B2 (en) * | 2010-02-24 | 2014-05-06 | Mingsheng Liu | Optimizer for two staged refrigeration systems |
-
2013
- 2013-10-23 US US14/061,167 patent/US20140109606A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4920757A (en) * | 1988-08-18 | 1990-05-01 | Jimmy Gazes | Geothermal heating and air conditioning system |
US5461876A (en) * | 1994-06-29 | 1995-10-31 | Dressler; William E. | Combined ambient-air and earth exchange heat pump system |
US20070119208A1 (en) * | 2005-10-20 | 2007-05-31 | Ecr Technologies, Inc. | Refrigerant Fluid Flow Control Device and Method |
US20080078191A1 (en) * | 2006-09-29 | 2008-04-03 | Fujitsu General Limited | Rotary compressor and heat pump system |
US8713952B2 (en) * | 2010-02-24 | 2014-05-06 | Mingsheng Liu | Optimizer for two staged refrigeration systems |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |