Heat dissipation device of air conditioner electric control board, air conditioner power supply module and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, in particular to a heat dissipation device of an air conditioner electric control board, an air conditioner power supply module and an air conditioner. The heat dissipation device of the air conditioner electric control board comprises a heat dissipation part used for being in contact with electronic components on the air conditioner electric control board and a refrigerant pipeline used for refrigerant circulation. A refrigerant inlet and a refrigerant outlet are formed in the two sides of the heat dissipation part, the heat dissipation part comprises a first shell and a second shell, the first shell and the second shell are assembled in a matched mode to jointly form a cavity used for refrigerant flowing, the cavity communicates with a refrigerant pipeline through the refrigerant inlet and the refrigerant outlet, and a turbulent flow assembly is arranged in the cavity. The heat dissipation device of the air conditioner electric control board is not affected by the external environment temperature, can still keep efficient heat dissipation performance through heat exchange of refrigerants in the high-temperature environment, guarantees normal work of the air conditioner electric control board, reduces the shutdown frequency of an air conditioner caused by overheating of the air conditioner electric control board, and improves the heat dissipation efficiency of the air conditioner electric control board. Therefore, the use experience and reliability of the air conditioner are improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a heat dissipation device for an air conditioning control board, an air conditioning power supply module, and an air conditioner. Background Technology

[0002] Most modern air conditioners use air-cooled heat exchangers to dissipate heat from the electronic components on their control boards. Driven by an axial fan, cool outdoor air is drawn into the outdoor unit. As this cool air flows over the fins of the heat exchanger, it exchanges heat with the fins, thus carrying away the heat from the heat exchanger and achieving a cooling effect.

[0003] However, the heat dissipation efficiency of air-cooled heat sinks largely depends on the surrounding airflow and temperature difference. In air conditioning systems, due to the complex layout of internal components, airflow to the heat sink is often obstructed by various components, resulting in uneven airflow and consequently low heat dissipation efficiency. Furthermore, when the external ambient temperature rises, the temperature difference between the heat sink and the outside air decreases, further reducing the heat dissipation efficiency and performance. This can easily lead to overheating of the air conditioning control board, causing the system to shut down, thus affecting the user experience. Summary of the Invention

[0004] Based on this, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide a heat dissipation device for an air conditioner control board. This heat dissipation device is not affected by the external ambient temperature and can still maintain efficient heat dissipation performance through heat exchange of refrigerant in high-temperature environments, ensuring the normal operation of the air conditioner control board, reducing the number of air conditioner shutdowns caused by overheating of the air conditioner control board, thereby improving the user experience and reliability of the air conditioner.

[0005] This utility model is achieved through the following technical solution: a heat dissipation device for an air conditioner control board, comprising a heat dissipation part for contacting electronic components on the air conditioner control board and a refrigerant pipeline for refrigerant flow. The heat dissipation part is provided with a refrigerant inlet and a refrigerant outlet on both sides. The heat dissipation part includes a first shell and a second shell, which are assembled together to form a cavity for refrigerant flow. The cavity is connected to the refrigerant pipeline through the refrigerant inlet and the refrigerant outlet, respectively. A flow turbulence component is provided inside the cavity.

[0006] Compared with existing technologies, the heat dissipation device for the air conditioner control board provided by this utility model designs a heat dissipation section that contacts the electronic components on the control board. A cavity is set within this heat dissipation section, allowing refrigerant to flow within the cavity, facilitating heat exchange between the refrigerant and the electronic components on the control board. This effectively cools the electronic components. Furthermore, by incorporating a turbulence-generating component within the cavity, turbulence is continuously generated during the refrigerant's flow, increasing the contact area and contact time between the refrigerant and the heat dissipation wall. This facilitates more efficient heat transfer from the electronic components to the refrigerant, thereby improving heat exchange efficiency and further enhancing the heat dissipation effect. Therefore, the heat dissipation device provided by this utility model is unaffected by external ambient temperature and can maintain high-efficiency heat dissipation performance even in high-temperature environments through refrigerant heat exchange. This ensures the normal operation of the air conditioner control board, reduces the number of air conditioner shutdowns due to overheating of the control board, and thus improves the user experience and reliability of the air conditioner.

[0007] Furthermore, the flow-disrupting component includes a plurality of protrusions arranged in an alternating matrix within the cavity. Thus, the alternating matrix arrangement of the protrusions turbulents the refrigerant flowing into the cavity. In addition, the protrusions increase the surface area within the cavity, thereby increasing the heat exchange contact area.

[0008] Furthermore, the first housing has an inner cavity, the side of which facing the second housing is an opening, and the second housing covers the opening. The protrusion extends outward from the inner surface of the first housing, and the extension direction of the protrusion is perpendicular to the flow direction of the refrigerant within the cavity. Thus, by designing the protrusion's extension direction perpendicular to the refrigerant flow direction, the refrigerant is directly obstructed when flowing through the protrusion, altering its flow path and velocity. This helps to break the laminar flow state of the refrigerant, promotes turbulence formation, and thereby increases the heat exchange efficiency between the refrigerant and the cavity wall and the protrusion surface.

[0009] Furthermore, the boss is a cylindrical boss, with one end of the cylindrical boss away from the first housing abutting the surface of the second housing, or the second housing has an inner cavity with an opening on the side facing the first housing, and the end of the cylindrical boss away from the first housing abutting the surface of the inner cavity of the second housing. Thus, the design of the cylindrical boss makes the flow of refrigerant on the side of the boss smoother, and the design of the cylindrical boss abutting the second housing ensures that the refrigerant only flows on the side of the cylindrical boss, thereby turbulenting all refrigerant entering the cavity.

[0010] Furthermore, the first housing has a first engaging portion on both sides, and the second housing has a second engaging portion on both sides, with the first engaging portion matching the second engaging portion. Thus, the design of the first and second engaging portions facilitates rapid alignment and assembly between the first and second housings.

[0011] Furthermore, the first housing and the second housing are welded together. Thus, a stable connection between the first housing and the second housing is achieved through welding.

[0012] Furthermore, both the refrigerant inlet and outlet are through holes located on the first engaging portion. The heat dissipation device also includes a pipe connector, one end of which is disposed within the through hole, and the other end is connected to the refrigerant pipeline. Thus, the connection between the heat dissipation unit and the refrigerant pipeline is achieved through the pipe connector.

[0013] Furthermore, it also includes a refrigerant circulation assembly, which comprises a refrigerant circulation pump and a heat exchanger. The refrigerant circulation pump, heat exchanger, and heat dissipation unit are connected through the refrigerant pipeline and together form a circulation loop. Thus, the refrigerant circulation pump drives the refrigerant to flow within the circulation loop, and the heat exchanger can exchange heat with the refrigerant, allowing the refrigerant to be recycled. This arrangement ensures cooling effect while helping to save resources.

[0014] This utility model also provides an air conditioner power module, including a mounting bracket, an air conditioner control board, a power supply, and a heat dissipation device for the air conditioner control board as described above. The air conditioner control board, the power supply, and the heat dissipation device are all mounted on the mounting bracket. The power supply is electrically connected to the air conditioner control board, and the heat dissipation part of the heat dissipation device is in contact with the electronic components on the air conditioner control board.

[0015] This utility model also provides an air conditioner, including an indoor unit and an outdoor unit, wherein the indoor unit is connected to the outdoor unit, and the outdoor unit is provided with an air conditioning power module as described above.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the installation position of the heat dissipation device of the air conditioner control board described in this utility model;

[0018] Figure 2 This is a schematic diagram of the heat dissipation device of the air conditioner control board described in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first housing of the heat dissipation part described in this utility model. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the structure of the first housing of the heat dissipation part described in this utility model. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the structure of the second housing of the heat dissipation part described in this utility model.

[0022] Reference numerals: 10, mounting bracket; 20, air conditioning control board; 21, electronic components; 30, power supply; 40, heat dissipation device; 41, heat dissipation part; 411, first housing; 4111, first engaging part; 412, second housing; 4121, second engaging part; 413, inner cavity; 414, boss; 415, refrigerant inlet; 416, refrigerant outlet; 42, refrigerant pipeline; 43, pipe joint. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Example 1

[0025] Please see Figures 1 to 5 This embodiment provides a heat dissipation device for an air conditioner control board. This device is mainly used to dissipate heat from the electronic components on the air conditioner control board. More specifically, it is used to dissipate heat from the electronic components on the outdoor unit control board of the air conditioner. The outdoor unit control board is the main control board of the air conditioning system, responsible for controlling the entire air conditioning system.

[0026] Specifically, the heat dissipation device 40 of the air conditioner control board includes a heat dissipation part 41 for contacting the electronic components 21 on the air conditioner control board 20 and a refrigerant pipeline 42 for refrigerant flow. The heat dissipation part 41 has a refrigerant inlet 415 and a refrigerant outlet 416 on both sides. The heat dissipation part 41 includes a first housing 411 and a second housing 412. The first housing 411 and the second housing 412 are assembled together to form a cavity for refrigerant flow. The cavity is connected to the refrigerant pipeline 42 through the refrigerant inlet 415 and the refrigerant outlet 416 respectively. A flow turbulence component is provided in the cavity.

[0027] Therefore, by designing a heat dissipation section 41 that contacts the electronic components 21 on the air conditioning control board 20, and setting a cavity within this heat dissipation section 41, the refrigerant flows within the cavity, allowing heat exchange between the refrigerant and the electronic components 21 on the air conditioning control board 20. This effectively dissipates heat and cools the electronic components on the air conditioning control board. Furthermore, by setting a turbulence component within the cavity, turbulence is continuously generated during the refrigerant's flow within the cavity, increasing the contact area and contact time between the refrigerant and the heat dissipation wall, which facilitates more efficient heat transfer from the electronic components to the refrigerant, thereby improving heat exchange efficiency and further enhancing the heat dissipation effect. The heat dissipation device 40 provided in this embodiment is unaffected by the external ambient temperature and can maintain efficient heat dissipation performance through heat exchange with the refrigerant even in high-temperature environments. This ensures the normal operation of the air conditioning control board 20, reduces the number of air conditioner shutdowns caused by overheating of the air conditioning control board 20, and thus improves the user experience and reliability of the air conditioner.

[0028] In this embodiment, both the first housing 411 and the second housing 412 are rectangular housings. The side of the first housing 411 facing away from the second housing 412 is in contact with the electronic components 21 on the air conditioning control board 20. Both the first and second housings have an inner cavity 413. The inner cavity 413 of the first housing 411 is open on the side facing the second housing 412, and the inner cavity 413 of the second housing 412 is open on the side facing the first housing 411. The first housing 411 and the second housing 412 cover each other, thus forming a cavity for refrigerant flow. Of course, in other alternative embodiments, the shapes of the first housing 411 and the second housing 412 are not limited to rectangles, and can be designed according to the actual heat dissipation conditions and the distribution and shape of the electronic components 21 on the air conditioning control board 20.

[0029] In this embodiment, the cross-section of the inner cavity 413 is octagonal. The octagon includes two short sides, two long sides, and four oblique sides. The short sides and long sides are connected by the oblique sides. The short sides correspond to the short sides of the rectangular shell, and the long sides correspond to the long sides of the rectangular shell. The refrigerant inlet 415 and refrigerant outlet 416 are respectively located on the two short sides of the first shell 411. Thus, through the above arrangement, the refrigerant flowing into the cavity is first diverted and diffused, and then converged and flows out of the cavity. Of course, in other alternative embodiments, the refrigerant inlet 415 and refrigerant outlet 416 can be respectively located on the two short sides of the second shell 412. Of course, in other alternative embodiments, the cross-section of the inner cavity is not limited to an octagon and can be designed according to the actual heat dissipation situation and the distribution and shape of the electronic components on the air conditioning control board.

[0030] Preferably, the first housing 411 and the second housing 412 are welded together. Thus, a stable connection between the first housing 411 and the second housing 412 is achieved through welding.

[0031] In this embodiment, the first housing 411 has a first engaging portion 4111 on both sides, and the second housing 412 has a second engaging portion 4121 on both sides. The first engaging portion 4111 and the second engaging portion 4121 are matched. Thus, the design of the first engaging portion 4121 and the second engaging portion 4121 facilitates quick alignment and assembly between the first housing 411 and the second housing 412.

[0032] Specifically, the first engaging portion 4111 is a protrusion extending outward from the surface of the first housing 411 facing the second housing 412, and the second engaging portion 4121 is a groove formed by the inward recess of the surface of the second housing 412 facing the first housing 411, which matches the protrusion. Thus, the protrusion and groove achieve positioning and assembly between the first housing 411 and the second housing 412. Of course, in other alternative embodiments, the first engaging portion 4111 can be a groove, and the second engaging portion 4121 can be a protrusion.

[0033] Preferably, the protrusion is located on the short side of the first housing 411, and both the refrigerant inlet 415 and the refrigerant outlet 416 are through holes on the protrusion. The cavity is connected to the refrigerant pipe 42 through the through holes. Thus, the cavity inside the heat dissipation section 41 is connected to the outside through the through holes on the protrusion. Of course, in other alternative embodiments, the through holes can be provided separately from the protrusion, with the through holes located on the short side of the first housing 411 and the protrusion located on the long side of the first housing 412.

[0034] In this embodiment, the heat dissipation device 40 further includes a pipe connector 43, one end of which is disposed within the through hole, and the other end is connected to the refrigerant pipe 42. Thus, the connection between the heat dissipation unit 41 and the refrigerant pipe 42 is achieved through the pipe connector 43. Preferably, the pipe connector 41 and the first housing 411 are separate designs, and the pipe connector is connected to the first housing 411 by an easily detachable connection method such as threads or snap-fit. Of course, in other alternative embodiments, the pipe connector 43 can be an integral design with the first housing 411.

[0035] In this embodiment, the flow-disrupting component includes a plurality of protrusions 414 arranged in an alternating matrix within the cavity. Thus, the alternating matrix arrangement of the protrusions 414 turbulents the refrigerant flowing into the cavity. Furthermore, the protrusions 414 increase the surface area within the cavity, thereby increasing the heat exchange contact area.

[0036] Specifically, the protrusion 414 extends outward from the surface of the inner cavity 413 of the first housing 411, and the extension direction of the protrusion 414 is perpendicular to the flow direction of the refrigerant in the cavity. Thus, by designing the extension direction of the protrusion 414 perpendicular to the refrigerant flow direction, the refrigerant is directly obstructed when flowing through the protrusion 414, altering its flow path and velocity. This helps to break the laminar flow state of the refrigerant, promotes the formation of turbulence, and thereby increases the heat exchange efficiency between the refrigerant and the cavity wall and the protrusion surface.

[0037] Preferably, the boss 414 is a cylindrical boss, with one end of the cylindrical boss away from the first housing 411 abutting the surface of the inner cavity 413 of the second housing 412. Thus, the cylindrical boss design allows for smoother flow of refrigerant along its side, and the design of the cylindrical boss abutting the inner cavity surface of the second housing ensures that the refrigerant only flows along the side of the cylindrical boss, thereby turbulenting all refrigerant entering the cavity. Of course, in other alternative embodiments, the cross-sectional shape of the boss 414 is not limited to a circle; it can be an ellipse or a polygon.

[0038] In this embodiment, the heat dissipation device further includes a refrigerant circulation assembly (not shown), which includes a refrigerant circulation pump and a heat exchanger. The refrigerant circulation pump, heat exchanger, and heat dissipation unit are connected through the refrigerant pipeline 42 and together form a circulation loop. Thus, the refrigerant circulation pump drives the refrigerant to flow within the circulation loop, and the heat exchanger exchanges heat with the refrigerant, allowing the refrigerant to be recycled. This arrangement ensures cooling performance while helping to save resources. It should be noted that the refrigerant circulation pump and heat exchanger are existing technologies and will not be described in detail here.

[0039] Preferably, the cylindrical boss is integrally formed with the first housing 411. Of course, in other alternative embodiments, the cylindrical boss can be designed separately from the first housing 411, and the cylindrical boss can be provided with the first housing 411 by means of easy disassembly such as threads or snaps.

[0040] Preferably, the first housing 411, the second housing 412, and the cylindrical boss are all made of aluminum alloy. Of course, in other alternative embodiments, the first housing 411, the second housing 412, and the cylindrical boss can be made of other thermally conductive metal materials.

[0041] Optionally, the refrigerant can be water, R134a (tetrafluoroethane), or R410A, etc.

[0042] Optionally, the heat dissipation device further includes a controller (not shown) and a temperature sensor (not shown). The temperature sensor is mounted on the air conditioning control board and is used to detect the temperature on the control board. The temperature sensor, refrigerant circulation pump, and heat exchanger are all electrically connected to the controller. Therefore, when the temperature on the air conditioning control board exceeds a threshold, the controller drives the refrigerant circulation pump to introduce refrigerant into the heat dissipation section, thereby cooling the electronic components on the control board. This configuration helps to save resources and reduce air conditioning operating costs.

[0043] When the heat dissipation device is running, the refrigerant enters the cavity of the heat dissipation section from the refrigerant inlet under the drive of the refrigerant circulation pump. It then diffuses and flows within the cavity. At the same time, the turbulence components in the cavity turbulent the refrigerant, and the heat generated by the electronic components on the air conditioner control board is transferred to the refrigerant through the first shell and the cylindrical boss. After absorbing heat, the refrigerant flows to the refrigerant outlet, enters the refrigerant pipeline through the pipe joint, exchanges heat with the heat exchanger in the refrigerant pipeline, and then flows into the heat dissipation section, thereby realizing the circulating heat dissipation of the electronic components on the air conditioner control board.

[0044] Compared with existing technologies, the heat dissipation device for the air conditioning control board provided in this embodiment, through the design of a heat dissipation section that contacts the electronic components on the air conditioning control board, incorporates a cavity within this section. By allowing refrigerant to flow within the cavity, heat exchange occurs between the refrigerant and the electronic components on the air conditioning control board, effectively cooling the components. Furthermore, by incorporating a turbulence-generating component within the cavity, turbulence is continuously generated during the refrigerant's flow, increasing the contact area and contact time between the refrigerant and the heat dissipation wall. This facilitates more efficient heat transfer from the electronic components to the refrigerant, thereby improving heat exchange efficiency and further enhancing the heat dissipation effect. Therefore, the heat dissipation device provided in this embodiment is unaffected by external ambient temperature and can maintain high-efficiency heat dissipation performance through refrigerant heat exchange even in high-temperature environments. This ensures the normal operation of the air conditioning control board, reduces the number of air conditioner shutdowns due to overheating of the control board, and thus improves the user experience and reliability of the air conditioner.

[0045] Example 2

[0046] The heat dissipation device for the air conditioning control board provided in this embodiment is basically the same as that in Embodiment 1, except that the second housing is a solid cover plate, the first housing has an inner cavity, and the side of the inner cavity facing the second housing is an opening, which the second housing covers. This forms a cavity for refrigerant flow.

[0047] In this embodiment, the end of the cylindrical boss away from the first housing is attached to the surface of the second housing.

[0048] Example 3

[0049] Please see Figure 1 This embodiment provides an air conditioner power module, including a mounting bracket 10, an air conditioner control board 20, a power supply 30, and a heat dissipation device 40 for the air conditioner control board as described in Embodiment 1 or Embodiment 2. The air conditioner control board 20, the power supply 30, and the heat dissipation device 40 are all mounted on the mounting bracket 10. The power supply 30 is electrically connected to the air conditioner control board 20, and the heat dissipation part 41 of the heat dissipation device 40 is in contact with the electronic components 21 on the air conditioner control board 20. It should be noted that the specific structure and connection of the air conditioner power supply and air conditioner control board are existing technologies and will not be described in detail here.

[0050] Example 4

[0051] This embodiment provides an air conditioner, including an indoor unit and an outdoor unit. The indoor unit is connected to the outdoor unit, and the outdoor unit contains an air conditioning power module as described in Embodiment 3. It should be noted that the specific structure and connection of the indoor and outdoor units are existing technologies and will not be described further here.

[0052] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” refers to two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A heat dissipating device for an air conditioner electric control board, characterized by comprising: The heat dissipation part is provided with a refrigerant inlet and a refrigerant outlet on both sides, and comprises a first shell and a second shell which are assembled together to form a cavity for refrigerant flow, and a turbulence assembly is arranged in the cavity.

2. The heat dissipating device for an air conditioner electric control board according to claim 1, wherein The turbulence assembly comprises a plurality of bosses which are arranged in a staggered matrix in the cavity.

3. The heat dissipating device for an electric control board of an air conditioner according to claim 2, wherein The first shell is provided with an inner cavity, one side of which is open, and the second shell covers the opening, the bosses extend outward from the inner cavity surface of the first shell, and the extension direction of the bosses is perpendicular to the flow direction of the refrigerant in the cavity.

4. The heat dissipating device for an electric control board of an air conditioner according to claim 3, wherein The boss is a cylindrical boss, one end of which away from the first shell is attached to the surface of the second shell, or the second shell is provided with an inner cavity, one side of which is open, and one end of the cylindrical boss away from the first shell is attached to the inner cavity surface of the second shell.

5. The heat dissipating device for an electric control board of an air conditioner according to claim 1, wherein The first shell is provided with a first clamping part on both sides, and the second shell is provided with a second clamping part on both sides, and the first clamping part is matched with the second clamping part.

6. The heat dissipating device for an air conditioner electric control board according to claim 5, wherein The first shell and the second shell are connected by welding.

7. The heat dissipating device for an air conditioner electric control board according to claim 5, wherein The refrigerant inlet and the refrigerant outlet are both through holes provided on the first clamping part, and the heat dissipation device further comprises a pipe joint, one end of which is arranged in the through hole, and the other end is connected with the refrigerant pipeline.

8. The heat dissipating device for an air conditioner electric control board according to any one of claims 1 to 7, wherein Further comprising a refrigerant circulation assembly, the refrigerant circulation assembly comprises a refrigerant circulation pump and a heat exchanger, and the refrigerant circulation pump, the heat exchanger and the heat dissipation part are connected through the refrigerant pipeline and form a circulation loop together.

9. An air conditioner power module, characterized by comprising: The heat dissipation device of the air conditioner electric control panel according to any one of claims 1-8, the air conditioner electric control panel, the power supply and the heat dissipation device are all installed on the mounting bracket, the power supply is electrically connected with the air conditioner electric control panel, and the heat dissipation part of the heat dissipation device is in contact with the electronic components on the air conditioner electric control panel.

10. An air conditioner characterized by comprising: The heat dissipation device of the air conditioner electric control panel according to any one of claims 1-8, the air conditioner electric control panel, the power supply and the heat dissipation device are all installed on the mounting bracket, the power supply is electrically connected with the air conditioner electric control panel, and the heat dissipation part of the heat dissipation device is in contact with the electronic components on the air conditioner electric control panel. The heat dissipation device of the air conditioner electric control panel according to any one of claims 1-8, the air conditioner electric control panel, the power supply and the heat dissipation device are all installed on the mounting bracket, the power supply is electrically connected with the air conditioner electric control panel, and the heat dissipation part of the heat dissipation device is in contact with the electronic components on the air conditioner electric control panel.

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