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

Abstract

The utility model relates 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 provided by the utility model comprises a heat dissipation part and a refrigerant pipeline, the heat dissipation part is used for being contacted with an electronic component on the air conditioner electric control board, the refrigerant pipeline is used for refrigerant circulation, and two sides of the heat dissipation part are provided with a refrigerant inlet and a refrigerant outlet. 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 is communicated with the refrigerant pipeline through the refrigerant inlet and the refrigerant outlet, a plurality of refrigerant flow channels are evenly distributed in the cavity, the refrigerant flow channels comprise first flow channels and second flow channels, and the first flow channels and the second flow channels are communicated with the cavity. The extending direction of the first flow channels is the same as the flowing direction of refrigerants entering the refrigerant inlet, and the second flow channels communicate with the adjacent first flow channels. According to the heat dissipation device, normal work of the electric control board is guaranteed, the shutdown frequency of the air conditioner caused by overheating of the electric control board is reduced, and the use experience and reliability of the air conditioner can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially is related to a heat abstractor of air conditioner electric control board, air conditioner power module, air conditioner. BACKGROUND

[0002] Current mainstream air conditioner outdoor unit adopts air-cooled fin to heat dissipation for its electric control board electronic component. Through the drive of axial flow fan, the low temperature air of outdoor is inhaled into the inside of air conditioner outdoor unit. When these low temperature air flow through the fin on the heat sink, will have heat exchange with fin, thereby taking away the heat in the heat sink, realizes the cooling effect.

[0003] However, the efficiency of this heat dissipation mode is influenced by the surrounding air flow condition and temperature difference to a great extent. In the air conditioning system, due to the layout of the internal components of the outdoor unit is complex, often hinders the smooth path of air flow to the fin, causes uneven air distribution, causes the heat dissipation efficiency to be low. In addition, when the external environment temperature rises, will reduce the temperature difference between the fin and the external air, further reduces the heat dissipation efficiency, reduces the heat dissipation performance, causes the air conditioner to shut down frequently, thereby influence the use experience. SUMMARY

[0004] Based on this, the purpose of the utility model is to overcome the defects or deficiencies of prior art, provide a heat abstractor of air conditioner electric control board, the heat abstractor does not depend on external environment temperature, can still keep the high efficient heat dissipation performance through the heat exchange of refrigerant in high temperature environment, guarantees the normal work of electric control board, reduces the number of shutdown of air conditioner due to the overheating of electric control board, thereby improves the use experience and reliability of air conditioner.

[0005] The utility model is realized through the following technical schemes: a heat abstractor of air conditioner electric control board, including the heat dissipation part for being contacted with electronic component on air conditioner electric control board and the refrigerant pipeline for refrigerant flow, the both sides of heat dissipation part are equipped with refrigerant inlet and refrigerant outlet, heat dissipation part includes first casing and second casing, first casing and second casing cooperate and assemble, form the cavity for refrigerant flow in common, the cavity is communicated with refrigerant pipeline through refrigerant inlet and refrigerant outlet respectively, the cavity is evenly distributed with a plurality of refrigerant flow channel, the refrigerant flow channel includes first flow channel and second flow channel, the extension direction of first flow channel is same with the flow direction of refrigerant entering refrigerant inlet, second flow channel is communicated with adjacent first flow channel.

[0006] Compared with the prior art, the heat dissipation device of the air conditioner electric control board has the following advantages: the heat dissipation device is not dependent on the external environment temperature, and can still maintain high-efficiency heat dissipation performance through heat exchange of the refrigerant in a high-temperature environment, so that the normal work of the air conditioner electric control board is ensured, the number of shutdowns of the air conditioner caused by overheating of the electric control board is reduced, and thus the use experience and reliability of the air conditioner are improved.

[0007] Further, the cavity is provided with a plurality of bosses, the bosses are arranged in a matrix, and the gaps between the bosses and the gaps between the bosses and the cavity form a plurality of refrigerant flow channels, and the refrigerant flow channels are distributed in vein shape.

[0008] Further, one of the first flow channels extends along the center line of the cavity, and the remaining first flow channels are symmetrically distributed about the center line of the cavity, the second flow channels are inclined branch flow channels, and the branch flow channels are symmetrically or staggeredly distributed on both sides of the first flow channel extending along the center line of the cavity to communicate adjacent first flow channels.

[0009] Further, the branch flow channels include a first branch flow channel arranged close to the refrigerant inlet and a second branch flow channel arranged close to the refrigerant outlet, the first branch flow channel is arranged to be inclined away from the refrigerant inlet, and the second branch flow channel is arranged to be inclined away from the refrigerant outlet.

[0010] Further, the first and second branch flow channels are symmetrically distributed about the center of the cavity. Thus, the symmetrically distributed first and second branch flow channels ensure that the flow path of the refrigerant in the cavity has high symmetry, which helps the refrigerant to be evenly diffused in the cavity.

[0011] Further, the first shell is provided with an inner cavity, one side of the inner cavity facing the second shell is open, the second shell covers the opening, the boss extends outward from the inner cavity surface of the first shell and is attached to the surface of the second shell, or the first and second shells are both provided with inner cavities, one side of the inner cavity of the first shell facing the second shell is open, one side of the inner cavity of the second shell facing the first shell is open, the first shell and the second shell cover each other, and the boss extends outward from the inner cavity surface of the first shell and is attached to the inner cavity surface of the second shell. Thus, it is ensured that the refrigerant only flows in the gap between the bosses and the gap between the bosses and the cavity to guide and diffuse all the refrigerant flowing into the cavity.

[0012] Further, the first shell and the second shell are welded together, the first shell is provided with first clamping parts on both sides, the second shell is provided with second clamping parts on both sides, and the first clamping parts match the second clamping parts. Thus, the first shell and the second shell are stably connected by welding, and the first clamping parts and the second clamping parts help the first shell and the second shell to be quickly aligned and assembled.

[0013] Further, the heat dissipation device further comprises 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 in communication through the refrigerant pipeline and jointly form a circulation loop. Thus, the refrigerant circulation pump is used to drive the refrigerant to flow in the circulation loop, the heat exchanger can exchange heat with the refrigerant, so that the refrigerant can be recycled, and the above-mentioned arrangement ensures the cooling effect and helps to save resources.

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

[0015] The utility model also provides a kind of air conditioner, including air conditioner indoor unit and air conditioner outdoor unit, the air conditioner indoor unit is connected with the air conditioner outdoor unit, and the air conditioner outdoor unit is provided with the air conditioner power module as described above.

[0016] For better understanding and implementation, the utility model is explained in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is installation position schematic view of the heat dissipation device of the air conditioner electric control board of the utility model;

[0018] Figure 2 It is structure schematic view of the heat dissipation device of the air conditioner electric control board of the utility model;

[0019] Figure 3 It is structure schematic of the first casing of the heat dissipation part of the utility model Figure 1 ;

[0020] Figure 4 It is structure schematic of the first casing of the heat dissipation part of the utility model Figure 2 ;

[0021] Figure 5 It is structure schematic of the second casing of the heat dissipation part of the utility model.

[0022] Reference signs: 10, mounting support;20, air conditioner electric control board;21, electronic component;30, power supply;40, heat dissipation device;41, heat dissipation part;411, first casing;4111, first clamping part;412, second casing;4121, second clamping part;413, inner cavity;414, boss;415, refrigerant inlet;416, refrigerant outlet;417, first flow channel;418, second flow channel;4181, first branch flow channel;4182, second branch flow channel;42, refrigerant pipeline;43, pipe joint. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model is further explained in detail below with reference to the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] Example one

[0025] Please refer to Figures 1 to 5 , the embodiment provides a kind of heat dissipation device of air conditioner electric control board, which is mainly used to heat dissipation to electronic component on air conditioner electric control board. More specifically, it is used to heat dissipation to electronic component on air conditioner outdoor unit electric control board. Air conditioner outdoor unit electric control board is the main control board of air conditioning system, responsible for the control of entire air conditioning system.

[0026] Specifically, the heat dissipation device 40 of the air conditioner electric control board includes a heat dissipation part 41 for contacting the electronic components 21 on the air conditioner electric control board 20 and a refrigerant pipeline 42 for refrigerant flow, the heat dissipation part 41 is provided with a refrigerant inlet 415 and a refrigerant outlet 416 on both sides, the heat dissipation part 41 includes a first shell 411 and a second shell 412, the first shell 411 and the second shell 412 are assembled together to form a cavity for refrigerant flow, the cavity is respectively communicated with the refrigerant pipeline 42 through the refrigerant inlet 415 and the refrigerant outlet 416, and a plurality of refrigerant flow channels are uniformly distributed in the cavity, the refrigerant flow channels include first flow channels 417 and second flow channels 418, the extension direction of the first flow channels 417 is the same as the flow direction of the refrigerant entering the refrigerant inlet 415, and the second flow channels 418 are communicated with adjacent first flow channels 417.

[0027] Therefore, by designing the heat dissipation part 41 for contacting the electronic components 21 on the air conditioner electric control board 20, a cavity is arranged in the heat dissipation part 41, the refrigerant is allowed to flow in the cavity, the refrigerant exchanges heat with the electronic components 21 on the air conditioner electric control board 20, thereby effectively dissipating heat and cooling the air conditioner electric control board, a plurality of uniformly distributed refrigerant flow channels are arranged in the cavity to form a dense heat exchange network, the refrigerant flows in the dense heat exchange network, on the one hand, the heat can be more effectively absorbed and dispersed, and on the other hand, the heat can be transferred in a large area in a short time, and the heat is taken away through the guidance of the refrigerant flow channels, thereby realizing rapid heat dissipation and further improving the heat dissipation effect. Therefore, the heat dissipation device provided in the embodiment does not depend on the external environment temperature, can still maintain high heat dissipation performance through heat exchange of the refrigerant in a high temperature environment, can ensure normal work of the air conditioner electric control board, reduce the shutdown frequency of the air conditioner caused by overheating of the air conditioner electric control board, and thereby improve the use experience and reliability of the air conditioner.

[0028] In the embodiment, the first shell 411 and the second shell 412 are both rectangular shells, one side of the first shell 411 away from the second shell 412 is in contact with the electronic components 21 on the air conditioner electric control board 20, and the first shell 411 and the second shell 412 are both provided with an inner cavity 413, one side of the inner cavity 413 of the first shell 411 facing the second shell 412 is open, one side of the inner cavity 413 of the second shell 412 facing the first shell 411 is open, and the first shell 411 and the second shell 412 are overlapped with each other. Therefore, the cavity for refrigerant flow is formed. Of course, in other alternative embodiments, the shapes of the first shell 411 and the second shell 412 are not limited to rectangular, and the corresponding shapes can be designed according to the actual heat dissipation situation and the distribution and shape of the electronic components 21 on the air conditioner electric control board 20.

[0029] In the 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 are connected with the long sides through the oblique sides, the short sides correspond to the short sides of the rectangular shell, the long sides correspond to the long sides of the rectangular shell, and the refrigerant inlet 415 and the refrigerant outlet 416 are respectively arranged on the two short sides of the first shell 411. Therefore, through the above arrangement, the refrigerant flowing into the cavity is first divided and diffused, and then converged and flows out of the cavity. Of course, in other alternative embodiments, the refrigerant inlet 415 and the refrigerant outlet 416 can be respectively arranged 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 octagonal, and the corresponding shape can be designed according to the actual heat dissipation and the distribution and shape of the electronic components on the air conditioner control panel.

[0030] Preferably, the first shell 411 and the second shell 412 are connected by welding. Therefore, through welding, the stable connection between the first shell 411 and the second shell 412 is realized.

[0031] In the embodiment, the first shell 411 is provided with a first clamping part 4111 on both sides, the second shell 412 is provided with a second clamping part 4121 on both sides, and the first clamping part 4111 matches the second clamping part 4121. Therefore, through the design of the first clamping part 4111 and the second clamping part 4121, the rapid alignment and assembly between the first shell 4111 and the second shell 4121 are facilitated.

[0032] Specifically, the first clamping part 4111 is a protrusion extending outward from the surface of the first shell 411 facing the second shell 412, and the second clamping part 4121 is a groove recessed inward from the surface of the second shell 412 facing the first shell 411, and the groove matches the protrusion. Therefore, the positioning and assembly between the first shell 411 and the second shell 412 are realized through the protrusion and the groove. Of course, in other alternative embodiments, the first clamping part 4111 can be a groove, and the second clamping part 4121 can be a protrusion.

[0033] Preferably, the protrusion is arranged on the short side of the first shell 411, the refrigerant inlet 415 and the refrigerant outlet 416 are both through holes arranged on the protrusion, and the cavity is connected to the refrigerant pipeline 42 through the through holes. Therefore, the communication between the cavity in the heat dissipation part 41 and the outside is realized through the through holes on the protrusion. Of course, in other alternative embodiments, the through holes can be arranged separately from the protrusion, the through holes are arranged on the short side of the first shell 411, and the protrusion is arranged on the long side of the first shell 411.

[0034] In the embodiment, the heat dissipation device further comprises a pipe joint 43, one end of the pipe joint 43 is arranged in the through hole, and the other end is connected with the refrigerant pipeline 42. Thus, the connection between the heat dissipation part 41 and the refrigerant pipeline 42 is realized through the pipe joint 43. As preferred, the pipe joint 43 and the first shell 411 are designed in a split type, and the pipe joint 41 is connected with the first shell 411 through a detachable connection mode such as thread or buckle. Of course, in other alternative embodiments, the pipe joint 43 can be designed in an integral type with the first shell 411.

[0035] In the embodiment, the cavity is provided with a plurality of bosses 414, the bosses 414 are arranged in a matrix, and the gaps between the bosses 414 and the gaps between the bosses 414 and the cavity form a plurality of refrigerant flow channels, and the refrigerant flow channels are distributed in vein shape. Thus, through the design of the plurality of bosses 414, the layout of the refrigerant flow channels distributed in vein shape is formed in the cavity, and a complex heat exchange network with branches is formed to realize efficient absorption and dispersion of heat. Specifically, the bosses 414 extend outward from the surface of the inner cavity 413 of the first shell 411 and are attached to the surface of the inner cavity 413 of the second shell 412. Thus, it is ensured that the refrigerant only flows in the gaps between the bosses 414 and the gaps between the bosses 414 and the cavity.

[0036] In the embodiment, one of the first flow channels 417 extends along the center line of the cavity, the remaining first flow channels 417 are symmetrically distributed about the center line of the cavity, and the second flow channels 418 are inclined branch flow channels, which are symmetrically or staggeredly distributed on both sides of the first flow channel 417 extending along the center line of the cavity and communicate adjacent first flow channels 417. Thus, through the design of the first flow channels 417 and the second flow channels 418, it is helpful to uniformly diffuse the refrigerant in the cavity, increase the connectivity of the refrigerant flow channels and the flexibility of the refrigerant flow, and help the refrigerant flow more efficiently in the cavity.

[0037] Specifically, the branch flow channel 418 includes a first branch flow channel 4181 arranged close to the refrigerant inlet 415 and a second branch flow channel 4182 arranged close to the refrigerant outlet 416, the first branch flow channel 4181 is arranged in an inclined direction away from the refrigerant inlet 415, and the second branch flow channel 4182 is arranged in an inclined direction away from the refrigerant outlet 416. Thus, through the design of the inclined direction of the first branch flow channel 4181, the inflowing refrigerant is branched under the guidance of the first branch flow channel 4181, and through the design of the inclined direction of the second branch flow channel 4182, the branched refrigerant is converged under the guidance of the second branch flow channel 4182 and flows out through the refrigerant outlet.

[0038] As preferred, the first branch flow channel 4181 and the second branch flow channel 4182 are symmetrically distributed about the center of the cavity. Thus, the symmetrically distributed first branch flow channel 4181 and the second branch flow channel 4182 ensure that the flow path of the refrigerant in the cavity has high symmetry, which helps the refrigerant to be evenly diffused in the cavity.

[0039] In the present embodiment, the heat dissipation device further comprises a refrigerant circulation assembly (not shown in the figure), which comprises a refrigerant circulation pump and a heat exchanger. The refrigerant circulation pump, the heat exchanger and the heat dissipation part 41 are connected in communication through the refrigerant pipeline 42 and jointly form a circulation loop. Thus, the refrigerant circulation pump is used to drive the refrigerant to flow in the circulation loop, and the heat exchanger can exchange heat with the refrigerant, so that the refrigerant can be recycled. The above-mentioned setting ensures the cooling effect while helping to save resources. It should be noted that the refrigerant circulation pump and the heat exchanger are both prior art, and will not be described here.

[0040] As preferred, the boss 414 is integrally formed with the first shell 411. Of course, in other alternative embodiments, the boss 414 can be designed in a separate manner from the first shell 411. The boss can be arranged on the first shell 411 by means of a screw, a buckle or other easily detachable connection mode.

[0041] As preferred, the first shell 411, the second shell 412 and the boss 414 are all made of aluminum alloy. Of course, in other alternative embodiments, the first shell 411, the second shell 412 and the boss 414 can be made of other metal materials with good thermal conductivity.

[0042] Optionally, the refrigerant can be water, R134a (tetrafluoroethane) or R410A, etc.

[0043] Optionally, the heat dissipation device further comprises a controller (not shown in the figure) and a temperature sensor (not shown in the figure). The temperature sensor is arranged on the air conditioner control panel for detecting the temperature on the air conditioner control panel. The temperature sensor, the refrigerant circulation pump and the heat exchanger are electrically connected with the controller. Thus, when the temperature on the air conditioner control panel exceeds a threshold value, the controller drives the refrigerant circulation pump to introduce refrigerant into the heat dissipation part to cool the electronic components on the air conditioner control panel. Through the above-mentioned setting, it helps to save resources and save the cost of using the air conditioner.

[0044] When the heat dissipation device operates, the refrigerant enters the cavity of the heat dissipation part from the refrigerant inlet under the driving of the refrigerant circulating pump, is branched under the guidance of the vein-shaped distribution of the plurality of flow channels, and is uniformly diffused in the cavity. Meanwhile, the heat generated by the electronic components on the electric control board is transmitted to the refrigerant through the first shell and the boss, the refrigerant after absorbing the heat converges 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 part, so as to realize the circulating heat dissipation of the electronic components on the electric control board.

[0045] Compared with the prior art, the heat dissipation device of the air conditioner electric control board provided in the embodiment can effectively dissipate heat and cool the air conditioner electric control board by designing the heat dissipation part in contact with the electronic components on the air conditioner electric control board, arranging a cavity in the heat dissipation part, and making the refrigerant flow in the cavity to exchange heat with the electronic components on the electric control board. Further, the heat dissipation device can realize rapid heat dissipation and further improve the heat dissipation effect by arranging a plurality of uniformly distributed refrigerant flow channels in the cavity to form a dense heat exchange network, making the refrigerant flow in the dense heat exchange network, effectively absorbing and dispersing heat on one hand, and completing large-area heat transfer in a short time on the other hand, and taking away the heat through the guidance of the refrigerant flow channels. Thus, the heat dissipation device provided in the embodiment does not depend on the external environment temperature, can still maintain high-efficiency heat dissipation performance in a high-temperature environment, can ensure the normal work of the air conditioner electric control board, reduce the shutdown frequency of the air conditioner caused by overheating of the electric control board, and thus improve the use experience and reliability of the air conditioner.

[0046] Embodiment Two

[0047] The heat dissipation device of the air conditioner electric control board provided in the embodiment has basically the same structure as that of Embodiment One, and the difference lies in that the second shell is a solid cover plate, the first shell is provided with an inner cavity, one side of the inner cavity facing the second shell is open, and the second shell covers the opening. Thus, the cavity for the refrigerant flow is formed.

[0048] In the embodiment, the boss extends outward from the inner cavity surface of the first shell and is attached to the surface of the second shell.

[0049] Embodiment Three

[0050] Please refer to Figure 1 The embodiment provides an air conditioner power supply module, which comprises a mounting bracket, an air conditioner electric control board, a power supply and a heat dissipation device of the air conditioner electric control board as described in Embodiment One or Embodiment Two. The air conditioner electric control board, the power supply and the heat dissipation device are all mounted on the mounting bracket. The power supply is electrically connected with the air conditioner electric control board, and the heat dissipation part of the heat dissipation device is in contact with the electronic components on the air conditioner electric control board. It should be noted that the specific structure and connection of the power supply and the electric control board of the air conditioner are all prior art, which will not be described here.

[0051] Embodiment four

[0052] The embodiment provides an air conditioner, which comprises an air conditioner indoor unit and an air conditioner outdoor unit, the air conditioner indoor unit is connected with the air conditioner outdoor unit, and the air conditioner outdoor unit is provided with the air conditioner power module as described in the embodiment three. It should be noted that the specific structural components and connection of the air conditioner indoor unit and the air conditioner outdoor unit are prior art, and will not be described here.

[0053] The terms used in the embodiments of the present application are merely for the purpose of describing the specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that "a plurality of" means two or more, unless otherwise specified. The terms "first", "second", "third", etc. are only used to distinguish, not to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. The term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items. The above description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of the present application, the specific meanings of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.

[0054] The above-described embodiments only express several embodiments of the present application, which are described in detail, but should not be understood as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A heat dissipating device for an air conditioner electric control board, characterized by comprising: The heat dissipation device comprises a heat dissipation part for contacting electronic components on the air conditioner electric control board and a refrigerant pipeline for refrigerant flow, both sides of the heat dissipation part are provided with a refrigerant inlet and a refrigerant outlet, the heat dissipation part comprises a first shell and a second shell, the first shell and the second shell are assembled together to form a cavity for refrigerant flow, the cavity is communicated with the refrigerant pipeline through the refrigerant inlet and the refrigerant outlet respectively, a plurality of refrigerant flow channels are uniformly distributed in the cavity, the refrigerant flow channel comprises a first flow channel and a second flow channel, the extension direction of the first flow channel is the same as the flow direction of the refrigerant entering the refrigerant inlet, and the second flow channel is communicated with adjacent first flow channels.

2. The heat dissipating device for an air conditioner electric control board according to claim 1, wherein A plurality of bosses are arranged in the cavity, the bosses are arranged in a matrix, the gaps between the bosses and the gaps between the bosses and the cavity form a plurality of refrigerant flow channels, and the refrigerant flow channels are distributed in vein shape.

3. The heat dissipating device for an electric control board of an air conditioner according to claim 2, wherein One of the first flow channels extends along the center line of the cavity, the remaining first flow channels are symmetrically distributed about the center line of the cavity, the second flow channels are inclined branch flow channels, the branch flow channels are symmetrically or staggered distributed on both sides of the first flow channel extending along the center line of the cavity, and the branch flow channels communicate adjacent first flow channels.

4. The heat dissipating device for an electric control board of an air conditioner according to claim 3, wherein The branch flow channel comprises a first branch flow channel close to the refrigerant inlet and a second branch flow channel close to the refrigerant outlet, the first branch flow channel is arranged in an inclined manner away from the refrigerant inlet, and the second branch flow channel is arranged in an inclined manner away from the refrigerant outlet.

5. The heat dissipating device for an air conditioner electric control board according to claim 4, wherein The first branch flow channel and the second branch flow channel are symmetrically distributed about the center of the cavity.

6. The heat dissipating device for an air conditioner electric control board according to claim 2, wherein The first shell is provided with an inner cavity, one side of the inner cavity facing the second shell is open, the second shell covers the opening, the boss extends outward from the inner cavity surface of the first shell and is attached to the surface of the second shell, or the first shell and the second shell are both provided with an inner cavity, one side of the inner cavity of the first shell facing the second shell is open, one side of the inner cavity of the second shell facing the first shell is open, the first shell and the second shell cover each other, and the boss extends outward from the inner cavity surface of the first shell and is attached to the inner cavity surface of the second shell.

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

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

9. An air conditioner outdoor unit power module, characterized by, The heat dissipation device comprises a mounting bracket, an air conditioner electric control board, a power supply and the air conditioner electric control board heat dissipation device of any one of claims 1-8, the air conditioner electric control board, the power supply and the heat dissipation device are all mounted on the mounting bracket, the power supply is electrically connected with the air conditioner electric control board, and the first shell of the heat dissipation part is in contact with the electronic components mounted on the air conditioner electric control board.

10. An air conditioner characterized by comprising: The air conditioner indoor unit and the air conditioner outdoor unit are connected, and the air conditioner outdoor unit is provided with the air conditioner outdoor unit power supply module.

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