WO2014094414A1

WO2014094414A1 - Heat exchange device, and clothes dryer or washer-dryer integrated machine having same

Info

Publication number: WO2014094414A1
Application number: PCT/CN2013/077615
Authority: WO
Inventors: 于军蕾; 李庆强; 周薇; 裴东法
Original assignee: 无锡小天鹅股份有限公司
Priority date: 2012-12-21
Filing date: 2013-06-21
Publication date: 2014-06-26
Also published as: CN103485144B; CN203530743U; CN103015140A; CN103485143A; WO2014094454A1; CN103485143B; CN103485144A; CN203530744U

Abstract

A heat exchange device, and clothes dryer or washer-dryer integrated machine having the same, the heat exchange device comprising: a hot fluid passage having a hot fluid inlet (022) at the first end thereof and a hot fluid outlet (021) at the second end thereof; a cold fluid passage (042) having a cold fluid inlet (043) at the first end thereof near the hot fluid outlet (021) and a cold fluid outlet (044) at the second end thereof near the hot fluid inlet (022); and a heat exchange plate (041) disposed between the hot fluid passage and the cold fluid passage (042) for exchanging heat between the hot fluid in the hot fluid passage and the cold fluid in the cold fluid passage (042).

Description

Heat exchange device and dryer or washing and drying machine having the same

The present invention relates to the field of home appliance manufacturing technology, and more particularly to a heat exchange device for manufacturing a home appliance and a dryer or a washer-dryer having the heat exchanger. Background technique

With the improvement of living standards, dryers or washing and drying machines have gradually entered people's lives. The drying medium is required to dry the clothes or dry the machine to precipitate the moisture on the clothes. At present, the cooling medium of the existing washing and drying machine on the market includes water, air, and refrigerant for air conditioning refrigeration. The dryer or the washing and drying machine (hereinafter referred to as the dryer or the water-cooled washing and drying machine) in which water is used as a cooling medium has the largest market share due to its simple structure and low cost.

The clothes dryer or the water-cooled washing and drying machine generally includes a rotatable drying unit for the laundry accommodating unit for air circulation and heating of the air, a condensing unit for cooling, and the like. The condensing unit includes an air inlet and an air outlet. When the conventional clothes dryer or the water-cooled washing and drying machine is used for drying, the cooling water enters the condenser from the position of the condenser near the air outlet of the condensing unit, and the cooling water exchanges heat with the high-temperature and high-humidity air in the condensing unit, and the high temperature is high. The moisture in the wet air precipitates the water droplets in a cold process, which achieves drying of the clothes.

At the same time, the cooling water absorbs the heat of the high-temperature and high-humidity air and the temperature rises, resulting in the secondary volatilization of the high-temperature cooling water, resulting in low drying efficiency, and the precipitated water droplets also exist in the condensing unit. The problem of secondary volatilization, which leads to the problem of the inefficiency of the conventional water-cooled condensing unit. Summary of the invention

The present invention claims priority from China's prior application (application number: 201210562719. 5, filing date: December 21, 2012, invention name: dryer).

The present invention aims to solve at least one of the above technical problems to some extent.

Accordingly, it is an object of the present invention to provide a low cost, high efficiency heat exchange device.

Another object of the present invention is to provide a dryer or a washer-dryer.

A heat exchange device according to an embodiment of the present invention, comprising: a hot fluid passage, a first end of the hot fluid passage having a hot fluid inlet and a second end of the hot fluid passage having a hot fluid outlet; a cold fluid passage, a first end of the cold fluid passage having a cold fluid inlet adjacent the hot fluid outlet and a second end of the cold fluid passage having a cold fluid outlet adjacent the hot fluid inlet; and a heat exchange plate, the heat exchange plate being disposed Between the hot fluid passage and the cold fluid passage, the hot fluid of the hot fluid passage exchanges heat with the cold fluid of the cold fluid passage through the heat exchange plate. According to the heat exchange device of the embodiment of the invention, the hot fluid flows in the hot fluid passage, the cold fluid flows in the cold fluid passage, and the cold and hot fluid exchange heat through the heat exchange plate, and the heat exchange efficiency is high, the structure is simple, and the processing is convenient. , low cost.

In addition, the heat exchange device according to the above embodiment of the present invention may further have the following additional technical features: According to an example of the present invention, both end sides of the heat exchange plate extend to the outer wall of the hot fluid passage and the cold The outer walls of the fluid passages are connected.

According to an example of the invention, the heat exchange plate is sealingly connected to the hot fluid passage.

According to an example of the invention, the heat exchange plate is integrally formed with the hot fluid passage.

According to an example of the invention, the heat exchange plate is sealingly connected to the cold fluid passage.

According to an example of the invention, the heat exchange plate is integrally formed with the cold fluid passage.

According to an example of the invention, the heat exchange plate is a metal plate.

According to an example of the invention, the metal plate is an aluminum plate or a stainless steel plate.

According to an example of the present invention, the heat exchange plate has a plurality of recesses and a plurality of protrusions.

According to an example of the invention, the cold fluid passage has a plurality of retaining ribs on its inner surface.

A clothes dryer or a washing and drying machine according to an embodiment of the present invention, comprising: a clothes receiving chamber; a drying air duct, wherein the drying air duct has a drying air duct inlet and a drying air duct outlet, wherein The drying air duct outlet is in communication with the laundry receiving chamber; and the heat exchange device according to any one of the above, wherein the hot fluid inlet is in communication with the laundry receiving chamber and the hot fluid outlet is The inlet of the drying air duct is in communication, the drying air duct, the hot fluid inlet and the hot fluid outlet and the laundry receiving chamber are on an internal circulation passage, and the cold fluid inlet and the cold fluid outlet of the cold fluid passage are in Unlike the external loop channel of the internal loop channel.

According to an example of the invention, the cold fluid outlet is in communication with the laundry receiving chamber. .

The additional aspects and advantages of the invention will be set forth in part in the description which follows. DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of a washing and drying machine including a heat exchange device according to an embodiment of the present invention.

2 is a schematic view of a heat exchange device according to an embodiment of the present invention;

3 is a schematic view of a heat exchange device according to another embodiment of the present invention;

4 is a schematic view of a heat exchange device according to still another embodiment of the present invention; and

Figure 5 is a schematic illustration of a cold fluid passage of a heat exchange device in accordance with yet another embodiment of the present invention. detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width",

"Thickness", "Up", "Down", "Before", "After", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside" The orientation or positional relationship indicated by ", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or the components must have a particular orientation, are constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like are to be understood broadly, and may be either a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or connected integrally; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood by those skilled in the art on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature being directly above and above the second feature, or merely indicating that the first feature is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely indicating that the first feature level is less than the second feature.

A heat exchange device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

First, it should be noted that when the heat exchange device according to the embodiment of the present invention is applied to, for example, a dryer or a washing and drying machine, the fluid flowing in the hot fluid passage is high temperature and high humidity air, and the cold fluid passage is inside. The flowing fluid is typically cold water such as tap water.

As shown in FIGS. 1 to 5, a heat exchange device according to an embodiment of the present invention includes: a hot fluid passage, a cold fluid passage 042, and a heat exchange plate 041.

Specifically, the first end of the hot fluid passage (ie, the lower end as shown in FIG. 3) has a hot fluid inlet 022 and the second end of the hot fluid passage (ie, the upper end as shown in FIG. 2) has heat Fluid outlet 021. The first end of the cold fluid passage 042 (i.e., the upper end as shown in Figure 2) has a cold fluid inlet 043 near the hot fluid outlet 021 and a second end of the cold fluid passage 042 (i.e., the lower end as shown in Figure 2). There is a cold fluid outlet 044 near the hot fluid inlet 022.

A heat exchange plate 041 is disposed between the hot fluid passage and the cold fluid passage 042, and exchanges the hot fluid of the hot fluid passage with the cold fluid of the cold fluid passage through the heat exchange plate 041.

In some preferred embodiments of the invention, the heat exchange plates 041 extend at both ends to connect to the outer wall of the hot fluid passage and the outer wall of the cold fluid passage 042.

According to the heat exchange device of the embodiment of the invention, the hot fluid flows in the hot fluid passage, the cold fluid flows in the cold fluid passage, and the cold and hot fluid exchange heat through the heat exchange plate, thereby realizing high temperature and high humidity air and cooling water. Isolation eliminates the secondary volatilization of liquid water, high heat exchange efficiency, simple structure, convenient processing and low cost.

Advantageously, the heat exchange plate 041 is sealingly connected to the hot fluid passage. Further, the heat exchange plate 041 is integrally formed with the hot fluid passage. Thereby, the structure is simpler and the processing is more convenient.

Advantageously, the heat exchange plate 041 is sealingly connected to the cold fluid passage 042. Further, the heat exchange plate 041 is formed integrally with the cold fluid passage 042. Thereby, the structure is simpler and the processing is more convenient.

According to an example of the present invention, the heat exchange plate 041 is a metal plate. In a preferred embodiment of the invention, the heat exchange plate 041 is constructed of an aluminum or stainless steel plate.

As shown in Fig. 4, according to an example of the present invention, the heat exchange plate 041 has a plurality of recesses and a plurality of projections thereon. Thereby, the heat exchange area of the heat exchange plate 041 can be increased, and the heat exchange efficiency can be improved.

As shown in Fig. 5, according to an example of the present invention, the inner surface of the cold fluid passage 042 has a plurality of retaining ribs. Thereby, the flow velocity of the cooling medium such as tap water can be slowed down, so that sufficient heat exchange can be achieved, thereby improving heat exchange efficiency.

As shown in FIGS. 1 to 5, a clothes dryer or a washing and drying machine according to an embodiment of the present invention comprises: a clothes receiving chamber; a drying air passage, and the heat exchange device according to any one of the above.

Specifically, the drying air duct has a drying air duct inlet and a drying air duct outlet, wherein the drying air duct outlet is in communication with the laundry receiving chamber.

Wherein the hot fluid inlet 022 is in communication with the laundry receiving chamber and the hot fluid outlet 021 is in communication with the inlet of the drying duct, the drying duct, the hot fluid inlet 022 and the heat The fluid outlet 021 and the laundry receiving chamber are on an internal circulation passage, and the cold fluid inlet 043 and the cold fluid outlet 044 of the cold fluid passage 042 are on an external circulation passage different from the internal circulation passage.

As shown in Figure 1, in a preferred embodiment of the invention, the cold fluid outlet 044 is in communication with a garment receiving chamber. In other words, when the dryer or the washing and drying machine according to the embodiment of the present invention performs the drying operation, the drying duct supplies hot air into the laundry receiving chamber to heat the wet laundry, thereby evaporating the moisture on the laundry to form High temperature and high humidity air. High The warm high humidity air enters the hot fluid passage from the laundry receiving chamber from the hot fluid inlet 022, while a cooling medium such as tap water enters the cold fluid passage 042 from the cold fluid inlet 043. The cold and hot fluids (ie, the cooling water and the high-temperature high-humidity gas) exchange heat through the heat exchange plates to condense the water vapor in the high-temperature and high-humidity gas into condensed water and then discharge them. After the heat exchange, the air is reheated and the air is heated to enter the clothes receiving chamber. By repeating the above process, the washed wet clothes can be dried.

The water source of the cooling water is not particularly limited herein. For example, the tap water can be directly connected to the cold fluid inlet 043 and the cooling water can be discharged at the cold fluid outlet 044, or an external water tank can be connected to circulate the cooling water. This will be understood by those of ordinary skill in the art.

According to the heat exchange device of the embodiment of the invention, the drying efficiency is high, the cooling water exchanges heat with the air in the condenser through the heat exchange plate, and the secondary evaporation of the cooling water in the condensation process is eliminated; the cooling water is saved, and the cooling can be controlled. The water outlet temperature of the water makes the cooling water fully exchange heat; the structure is simple, the processing is convenient, and the cost is low.

In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is understood that the foregoing embodiments are illustrative and not restrictive Variations, modifications, alterations and variations of the above-described embodiments are possible within the scope of the invention.

Claims

Claim 1. A heat exchange device, characterized in that it includes:

Thermal fluid channel, the first end of the thermal fluid channel has a thermal fluid inlet (022) and the second end of the thermal fluid channel has a thermal fluid outlet (021);

Cold fluid channel (042), a first end of the cold fluid channel (042) has a cold fluid inlet (043) close to the hot fluid outlet (021) and a second end of the cold fluid channel has a cold fluid inlet (043) close to the hot fluid inlet (021) 022) cold fluid outlet (044); Hekou

Heat exchange plate (041), the heat exchange plate (041) is located between the hot fluid channel and the cold fluid channel (042), and the hot fluid in the hot fluid channel is transferred through the heat exchange plate (041). Exchange heat with the cold fluid in the cold fluid channel (042).

2. The heat exchange device according to claim 1, characterized in that both end sides of the heat exchange plate (041) extend to be connected to the outer wall of the hot fluid channel and the outer wall of the cold fluid channel.

3. The heat exchange device according to claim 1, wherein the heat exchange plate is sealingly connected to the hot fluid channel.

4. The heat exchange device according to claim 3, characterized in that the heat exchange plate and the hot fluid channel are integrally formed.

5. The heat exchange device according to claim 1, wherein the heat exchange plate is sealingly connected to the cold fluid channel.

6. The heat exchange device according to claim 5, characterized in that the heat exchange plate and the cold fluid channel are integrally formed.

7. The heat exchange device according to any one of claims 1 to 6, characterized in that the heat exchange plate is a metal plate.

8. The heat exchange device according to claim 7, characterized in that the metal plate is an aluminum plate or a stainless steel plate.

9. The heat exchange device according to any one of claims 1 to 6, characterized in that the heat exchange plate has a plurality of depressions and a plurality of protrusions.

10. The heat exchange device according to any one of claims 1-6, characterized in that the inner surface of the cold fluid channel has a plurality of ribs.

11. A clothes dryer or an integrated washing and drying machine, characterized in that it includes: a clothes containing chamber;

Drying air duct, the drying air duct has a drying air duct inlet and a drying air duct outlet, wherein the drying air duct outlet is connected with the clothes containing chamber; and The heat exchange device according to any one of claims 1-6, wherein the hot fluid inlet (022) is connected to the clothes containing chamber and the hot fluid outlet (021) is connected to the drying air The drying air duct, the hot fluid inlet (022) and the hot fluid outlet (021) are connected with the clothes containing chamber on the internal circulation channel, and the cold fluid inlet of the cold fluid channel (042) (043) and the cold fluid outlet (044) are on an external circulation channel different from the internal circulation channel.

12. The clothes dryer or integrated washing and drying machine according to claim 11, characterized in that the cold fluid outlet (044) is connected with the clothes containing chamber.