CN216011910U - Heat exchange fin, heat exchanger and heat pump system - Google Patents
Heat exchange fin, heat exchanger and heat pump system Download PDFInfo
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- CN216011910U CN216011910U CN202121984200.7U CN202121984200U CN216011910U CN 216011910 U CN216011910 U CN 216011910U CN 202121984200 U CN202121984200 U CN 202121984200U CN 216011910 U CN216011910 U CN 216011910U
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Abstract
The embodiment of the application provides a heat exchange fin, heat exchanger and heat pump system, and heat exchange fin includes aluminum sheet and deposit at the at least partial surperficial copper layer of aluminum sheet, and the copper layer is as heat exchange fin's at least partial heat exchange surface. The heat exchange fin has the advantages that the aluminum sheet serving as the main body structure of the heat exchange fin is low in price, the cost advantage is high, and the manufacturing cost of the heat exchange fin can be reduced; the copper layer has higher heat transfer coefficient, can transmit heat for damp and hot air fast, condenses into the water vapor globule, can promote the heat transfer effect, consequently, the heat transfer fin of this application embodiment both has lower manufacturing cost, has higher heat exchange efficiency again.
Description
Technical Field
The application relates to the technical field of heat exchange, in particular to a heat exchange fin, a heat exchanger and a heat pump system.
Background
Taking the heat pump clothes dryer as an example, in the drying process of the heat pump clothes dryer, the condensation efficiency of water vapor on the surface of the evaporator has an important influence on the drying time and the drying effect of the whole machine.
In the related art, in the situation of pursuing cost advantage, the fins are replaced by cheap aluminum materials, but the fins made of aluminum materials have a less ideal dehumidification effect on hot and humid airflow, so that the quick-drying and quick-drying effects of the heat pump clothes dryer are relatively insufficient.
SUMMERY OF THE UTILITY MODEL
In view of this, the heat exchange fin, the heat exchanger and the heat pump system which take cost and heat exchange efficiency into consideration are desired to be provided in the embodiments of the present application.
The embodiment of the application provides a heat exchange fin, including aluminum sheet and deposit in the copper layer of aluminum sheet at least part surface, the copper layer is as heat exchange fin's at least part heat exchange surface.
In some embodiments, the surfaces of opposite sides of the aluminum sheet are completely covered by the copper layer, such that the heat exchange surface of the heat exchange fin is composed of only the copper layer.
In some embodiments, the copper layer has a thickness of no more than 10 μm.
In some embodiments, the aluminum sheet has a thickness of 0.1mm to 0.3 mm.
In some embodiments, the distance between two adjacent heat exchange fins is 1 mm-2 mm.
In some embodiments, the copper layer is configured to: the copper simple substance precipitated from the copper ions in the copper sulfate was deposited on the aluminum sheet.
In some embodiments, the copper layer has a contact angle of no more than 30 °.
The embodiment of the application provides a heat exchanger, including being used for supplying the pipeline that fluid medium flows and this application arbitrary embodiment the heat transfer fin, heat transfer fin's quantity is a plurality of, and is a plurality of heat transfer fin stacks the setting, the pipeline can with fluid medium's heat transfer extremely heat transfer fin.
In some embodiments, the pipe comprises a plurality of straight pipes, each of which passes through each of the heat exchange fins in turn, and a plurality of elbows connected between ends of two adjacent straight pipes in the flow direction of the fluid medium.
The embodiment of the application provides a heat pump system, including compressor, evaporimeter and condenser, the compressor the evaporimeter reaches the condenser is established ties and is set up in refrigerant circulation circuit, the evaporimeter and/or the condenser adopts the heat exchanger of this application arbitrary embodiment.
The heat exchange fin provided by the embodiment of the application can be used for refrigerating and dehumidifying hot and humid airflow. Specifically, when a fluid medium flows through the pipeline, the temperature of the surface of the heat exchange fin is low, when hot and humid airflow flows through the heat exchange fin, the hot and humid airflow is cooled when meeting cold, water vapor in the hot and humid airflow is separated out to form small water drops, the small water drops are attached to the copper layer, and the heat exchange coefficient of the copper material is larger than that of aluminum, so that the copper layer can improve heat exchange between the heat exchange fin and the hot and humid airflow, promote more water vapor to be separated out from the airflow, and improve the heat exchange effect; in addition, the copper material has better hydrophilicity for the globule that separates out can spread out on the copper layer better, increases the heat exchange area on globule and copper layer, makes the copper layer can absorb the heat of vapor fast, promotes rapid condensation.
The heat exchange fin has the advantages that the aluminum sheet serving as the main body structure of the heat exchange fin is low in price, the cost advantage is high, and the manufacturing cost of the heat exchange fin can be reduced; the copper layer has higher heat exchange coefficient, can rapidly transfer heat to humid hot air, condenses water vapor into small water drops, can improve the heat exchange and quality change effects, and has lower production cost and higher heat exchange efficiency.
The heat exchange fin provided by the embodiment of the application uses the copper material with low-cost aluminum material and high heat exchange coefficient, and simultaneously forms a comprehensive solution of a hydrophilic layer, so that a new idea is provided for improving the heat exchange efficiency of the heat exchange fin.
Drawings
FIG. 1 is a schematic structural diagram of a heat exchanger according to an embodiment of the present application;
FIG. 2 is a schematic view of a heat exchanger fin according to an embodiment of the present application;
FIG. 3 is a schematic view of a heat pump system according to an embodiment of the present application;
fig. 4 is a partial structural schematic view of a laundry treating apparatus according to an embodiment of the present application, in which dotted lines and arrows indicate airflow paths.
Description of the reference numerals
A heat exchanger 1; heat exchange fins 11; an aluminum sheet 111; a copper layer 112;
a pipeline 12; a heat pump system 2; an evaporator 21; a condenser 22; a compressor 23; an expansion valve 24; a base 3; a mounting cavity 3 a; a circulating air duct 3 b;
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
Referring to fig. 1, an embodiment of the present application provides a heat exchange fin 11 for a heat exchanger 1.
The embodiment of the application provides a heat exchanger 1, which comprises a pipeline 12 for flowing of fluid medium and a heat exchange fin 11 of any embodiment of the application.
During the process of flowing the fluid medium through the pipe 12, the heat of the fluid medium is transferred to the pipe 12, and the pipe 12 can transfer the heat of the fluid medium to the heat exchanging fins 11. The heat exchanger fins 11 radiate heat to the surroundings.
The particular type of fluid medium is not limited, for example, water, refrigerant, or other medium.
Referring to fig. 2, the heat exchanging fin 11 includes an aluminum sheet 111 and a copper layer 112 deposited on at least a portion of the surface of the aluminum sheet 111, the copper layer 112 serving as at least a portion of the heat exchanging surface of the heat exchanging fin 11.
The aluminum sheets 111 serve as a main structure of the heat exchange fin 11, and the aluminum sheets 111 determine the shape and approximate contour size of the heat exchange fin 11. The copper layer 112 is a thin layer deposited on the surface of the aluminum sheet 111.
The heat exchange fins 11 and the heat exchanger 1 in the embodiment of the application can be used for refrigerating and dehumidifying humid hot airflow. Specifically, when a fluid medium flows through the pipeline 12, the temperature of the surface of the heat exchange fin 11 is low, when a hot and humid airflow flows through the heat exchange fin 11, the hot and humid airflow is cooled when meeting cold, water vapor in the hot and humid airflow is separated out into small water drops, the small water drops are attached to the copper layer 112, and the heat exchange coefficient of the copper material is greater than that of aluminum, so that the copper layer 112 can promote heat exchange between the heat exchange fin 11 and the hot and humid airflow, promote more water vapor to be separated out of the airflow, and promote the heat exchange effect; in addition, the copper material has good hydrophilicity, so that the precipitated small water drops can be well spread on the copper layer 112, the heat exchange area between the small water drops and the copper layer 112 is increased, the copper layer 112 can rapidly absorb the heat of water vapor, and rapid condensation is promoted.
The heat exchanger of the embodiment of the application has the advantages that the aluminum sheet 111 serving as the main body structure of the heat exchange fin 11 is low in price, has a large cost advantage, and can reduce the manufacturing cost of the heat exchanger; the copper layer 112 has a high heat exchange coefficient, can rapidly transfer heat to humid hot air, condenses water vapor into small water drops, can improve the heat exchange and quality change effects, and has low production cost and high heat exchange efficiency.
The heat exchanger of this application embodiment, with the copper material of low-cost aluminium material load high heat transfer coefficient, still form the comprehensive solution on hydrophilic layer simultaneously, provide a new thinking to the heat exchange efficiency who promotes heat transfer fin.
The surface of the aluminum sheet 111 may be entirely covered with the copper layer 112, or only a part thereof may be covered with the copper layer 112.
Illustratively, in the embodiment where only a portion of the surface of the aluminum sheet 111 is covered by the copper layer 112, the copper layer 112 covers at least 60% of the total surface of the aluminum sheet 111, so as to ensure the heat exchange efficiency of the heat exchange fin 11, and also to ensure the relatively uniform heat exchange efficiency of each portion of the heat exchange fin 11.
Illustratively, referring to fig. 2, the surfaces of opposite sides of the aluminum sheet 111 are completely covered with the copper layer 112, so that the heat exchange surface of the heat exchange fin 11 is constituted only by the copper layer 112. Thus, the heat exchange fins 11 can have better heat exchange efficiency.
Illustratively, referring to fig. 2, the thickness d2 of the copper layer 112 is not more than 10 μm (micrometer), for example, the thickness of the copper layer 112 may be 10 μm, 9 μm, 8.4 μm, 7.5 μm, 7 μm, 6.7 μm, 6.2 μm, 6 μm, 5 μm, 4 μm, 3 μm, 2 μm, etc.
Illustratively, referring to FIG. 2, the aluminum sheet 111 has a thickness d1 of 0.1mm to 0.3mm (millimeters). For example, 0.1mm, 0.13mm, 0.17mm, 0.2mm, 0.24mm, 0.27mm, 0.3mm, etc.
The copper layer 112 is formed on the aluminum sheet 111 in an unlimited manner, for example, by electroplating, electroless plating, etc.
Illustratively, the copper layer 112 is configured to: the copper simple substance precipitated from the copper ions in the copper sulfate is deposited on the aluminum sheet 111.
Specifically, the aluminum sheet 111 is placed in a copper sulfate solution, the aluminum sheet 111 and the copper sulfate solution perform a chemical replacement reaction, the aluminum simple substance replaces copper ions, part of the copper ions are reduced to copper simple substances, the reduced copper simple substances have high activity and can be deposited on the aluminum sheet 111, part of the copper atoms are diffused into the aluminum sheet 111, metallurgical bonding can be formed at the junction of the copper layer and the aluminum sheet 111, the bonding force is strong, the copper layer 112 is not easy to fall off from the aluminum sheet 111, the reduced copper simple substances are in a microscopic particle shape and can be uniformly deposited on the aluminum sheet 111, and the surface of the finally formed copper layer 112 is in a microsphere structure, so that the hydrophilicity of the copper layer 112 is better. As the reaction proceeds, the amount of copper attached to the aluminum sheet 111 increases, and a copper layer 112 having a suitable thickness is finally formed.
It should be noted that, when the copper layer 112 completely covers the surface of the aluminum sheet 111, the aluminum sheet 111 cannot contact with the copper sulfate solution, so that the simple substance of the aluminum sheet 111 cannot replace the copper ions in the copper sulfate, and the thickness of the copper layer 112 hardly increases. Therefore, the copper layer 112 obtained in this way has a better uniformity of thickness and a lower thickness.
Illustratively, the contact angle of the copper layer 112 is not more than 30 °, for example, at 10 °, 13 °, 15 °, 18 °, 20 °, 23 °, 26 °, 30 °, and the like, so that the copper layer 112 can be ensured to have better hydrophilicity. The contact angle refers to an included angle from a solid-liquid interface to a gas-liquid interface through the inside of liquid at the intersection of solid, liquid and gas.
The arrangement of the piping 12 is not limited.
Illustratively, the pipe 12 includes a plurality of straight pipes each of which sequentially passes through each of the heat exchange fins 11 arranged in a stack, and a plurality of bends which connect between ends of two adjacent straight pipes in the flow direction of the flowing medium. That is, the whole pipe 12 passes through each heat exchange fin 11 back and forth in a winding manner, so as to increase the heat exchange efficiency of the pipe 12 and the heat exchange fins as much as possible.
Illustratively, the distance between two adjacent heat exchange fins 11 is 1mm to 2mm, for example, 1mm, 1.2mm, 1.5mm, 1.7mm, 2mm, etc., so that the airflow can conveniently flow through the gap between two adjacent heat exchange fins 11, and the airflow is in surface contact with the heat exchange fins 11, thereby ensuring the heat exchange efficiency; also giving the heat exchanger 1 a suitable wind resistance.
It should be noted that the heat exchanger 1 can be applied to any appropriate application.
Referring to fig. 3, the present application provides a heat pump system, which includes a compressor 23, an evaporator 21, and a condenser 22, where the compressor 23, the evaporator 21, and the condenser 22 are disposed in series in a refrigerant cycle, and the condenser 22 and/or the evaporator 21 employ a heat exchanger according to any embodiment of the present application.
In some embodiments, only condenser 22 employs the heat exchanger of any of the embodiments of the present application; in other embodiments, only the evaporator 21 may be the heat exchanger of any of the embodiments of the present application; in still other embodiments, the condenser 22 is a heat exchanger according to any of the embodiments of the present application, and the evaporator 21 is a heat exchanger according to any of the embodiments of the present application.
Specifically, with reference to fig. 3, the heat pump system 2 further includes an expansion valve 24, the compressor 23, the condenser 22, the expansion valve 24, and the evaporator 21 are sequentially connected in series, and the compressor 23 is connected to the condenser 22, the condenser 22 is connected to the expansion valve 24, and the expansion valve 24 is connected to the evaporator 21 through refrigerant pipes.
It should be noted that, in some embodiments, the condenser 22 may also adopt the heat exchanger 1 of any embodiment of the present application.
The working principle of the heat pump system 2 is as follows: the compressor 23 sucks in low-pressure gaseous refrigerant, the refrigerant is compressed by the compressor 23 and then discharged at high pressure, the discharged high-pressure refrigerant enters the condenser 22, is cooled by air at normal temperature and is condensed into high-pressure liquid (meanwhile, heat is transferred to surrounding air), that is, the air surrounding the condenser 22 is heated to raise the temperature; the high-pressure liquid refrigerant passes through the expansion valve 24 for throttling and pressure reduction, and then is changed into a low-pressure and low-temperature gas-liquid two-phase mixture, and then enters the evaporator 21, wherein the liquid refrigerant is evaporated and refrigerated in the evaporator 21 (while absorbing heat in the surrounding air), that is, the air around the evaporator 21 is cooled and cooled, and the generated low-pressure gas refrigerant is sucked by the compressor 23 again and then is pressurized, and the cycle is repeated and is continuously circulated, so that heat exchange is realized.
The expansion valve 24 may be replaced with a capillary tube.
The application scenario of the heat pump system of the embodiment of the present application is not limited, for example, an air conditioner.
In the embodiments of the present application, the heat pump system is exemplarily described as being applied to a laundry treatment apparatus.
Referring to fig. 4, an embodiment of the present application provides a clothes treating apparatus including a cylinder assembly, a tank, a circulating air duct 3b, and the heat pump system.
The drum is arranged in the box body, a clothes treatment cavity is arranged in the drum, the clothes treatment cavity is communicated with the circulating air duct 3b, namely, the air flow in the circulating air duct 3b flows through the clothes treatment cavity.
The evaporator 21 and the condenser 22 of the heat pump system 2 are both located on the circulating air duct 3b, the evaporator 21 is located upstream of the condenser 22 in the airflow flowing direction, the airflow discharged from the clothes treating cavity flows through the evaporator 21 and the condenser 22 in sequence, the evaporator 21 is used for cooling and dehumidifying the airflow flowing through the clothes treating cavity, and the condenser 22 is used for heating the airflow flowing through the evaporator 21. That is, the laundry treating apparatus of the embodiment of the present application dries laundry using the heat pump technology.
The working process and the clothes drying principle of the clothes treatment equipment provided by the embodiment of the application are as follows: the drying hot air flow in the circulating air duct 3b enters the clothes processing cavity from the downstream of the circulating air duct 3b along the air flow direction, in the clothes processing cavity, the drying hot air flow flows through the surface of wet clothes to perform heat and moisture exchange with the wet clothes to absorb moisture in the clothes and change the moisture into wet hot air flow, the wet hot air flow enters the upstream of the circulating air duct 3b and sequentially flows through the evaporator 21 and the condenser 22, in the process of flowing through the evaporator 21, water vapor in the wet hot air flow is separated out from the air flow due to temperature reduction and condensed into water drops, the wet hot air flow is condensed and dehumidified by the evaporator 21 to form low-temperature drying air flow, and the low-temperature drying air flow is heated into the drying hot air flow when passing through the condenser 22. The hot drying air flow enters the clothes treatment cavity from the downstream of the circulating air duct 3b again, and the clothes are continuously and efficiently dried by circulating operation.
It should be noted that the low-temperature drying air flow is relative to the wet hot air flow, and the temperature of the low-temperature drying air flow is lower than that of the wet hot air flow. The low temperature in the embodiment of the present application may be room temperature.
The heat pump type clothes treatment equipment realizes high utilization of energy and low energy consumption, and meanwhile, the drying temperature of the heat pump system 2 is far lower than the heating temperature of the electric heating element, so that the drying quality of clothes is guaranteed.
The clothes treatment equipment of the embodiment of the application, at least the evaporator 21 adopts the heat exchanger 1 of any embodiment of the application, the copper layer 112 of the aluminum sheet 111 has higher heat exchange coefficient, the hydrophilicity is better, and the clothes drying efficiency of the clothes treatment equipment is improved.
It should be noted that, in the field of laundry treatment apparatuses, functions of the evaporator 21 and the condenser 22 in the heat pump system are determined and will not be interchanged, and therefore, only a hydrophilic effect of the heat exchange fins of the evaporator 21 needs to be considered, and a hydrophobic effect of the heat exchange fins does not need to be considered, so that the heat exchanger 1 of the embodiment of the present application can obtain a better practical application effect when applied to a laundry treatment apparatus.
The laundry treating apparatus may be a dryer, a washing and drying all-in-one machine, or the like.
Exemplarily, the laundry treating apparatus includes a base 3, a cabinet housing is provided on the base 3, a top side of the base 3 is provided with a mounting cavity 3a, an evaporator 21 and a condenser 22 are both provided in the mounting cavity 3a, and the mounting cavity 3a is located on a circulation passage. That is, the heat pump system 2 is disposed on the base 3 below the drum mount.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of different embodiments or examples described herein may be combined by one skilled in the art without contradiction.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A heat exchange fin is used for a heat exchanger and is characterized in that,
the heat exchange fin (11) comprises an aluminum sheet (111) and a copper layer (112) deposited on at least part of the surface of the aluminum sheet (111), wherein the copper layer (112) is used as at least part of the heat exchange surface of the heat exchange fin (11).
2. The heat exchange fin according to claim 1, wherein the surfaces of opposite sides of the aluminum sheet (111) are completely covered by the copper layer (112) so that the heat exchange surface of the heat exchange fin (11) is constituted only by the copper layer (112).
3. The heat exchange fin according to claim 1, wherein the copper layer (112) has a thickness of no more than 10 μm.
4. The heat exchange fin according to claim 1, wherein the thickness of the aluminum sheet (111) is 0.1mm to 0.3 mm.
5. The heat exchange fin according to claim 1, wherein the distance between two adjacent heat exchange fins (11) is 1 mm-2 mm.
6. The heat exchange fin according to claim 1, wherein the copper layer (112) is configured to: the copper simple substance precipitated from the copper ions in the copper sulfate is deposited on the aluminum sheet (111).
7. The heat exchange fin according to claim 1, wherein the copper layer (112) has a contact angle of no more than 30 °.
8. A heat exchanger, comprising: a pipe line (12) for flowing a fluid medium and the heat exchange fin according to any one of claims 1 to 7, wherein the number of the heat exchange fins is plural, the plural heat exchange fins (11) are stacked, and the pipe line (12) can transfer heat of the fluid medium to the heat exchange fins (11).
9. The heat exchanger according to claim 8, wherein the piping (12) comprises a plurality of straight pipes each passing through each of the heat exchange fins (11) in turn, and a plurality of bends connecting between ends of adjacent two straight pipes in a flow direction of the fluid medium.
10. A heat pump system, characterized by comprising a compressor (23), an evaporator (21) and a condenser (22), the compressor (23), the evaporator (21) and the condenser (22) being arranged in series in a refrigerant circulation circuit, the evaporator (21) and/or the condenser (22) employing the heat exchanger according to claim 8 or 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121984200.7U CN216011910U (en) | 2021-08-23 | 2021-08-23 | Heat exchange fin, heat exchanger and heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121984200.7U CN216011910U (en) | 2021-08-23 | 2021-08-23 | Heat exchange fin, heat exchanger and heat pump system |
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| CN216011910U true CN216011910U (en) | 2022-03-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087687A1 (en) * | 2022-10-26 | 2024-05-02 | 无锡小天鹅电器有限公司 | Heat exchanger structure and clothes treatment device |
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2021
- 2021-08-23 CN CN202121984200.7U patent/CN216011910U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087687A1 (en) * | 2022-10-26 | 2024-05-02 | 无锡小天鹅电器有限公司 | Heat exchanger structure and clothes treatment device |
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