Air conditioner

Abstract

The air conditioner comprises a refrigerant circulation system and an electric control heat dissipation component, the refrigerant circulation system comprises a compressor, a first heat exchanger, a second heat exchanger and a throttling device, and an exhaust port of the compressor communicates with one of the first heat exchanger and the second heat exchanger; an air return port of the compressor is communicated with the other one of the first heat exchanger and the second heat exchanger, and the throttling device is connected between the first heat exchanger and the second heat exchanger in series; the electric control heat dissipation component comprises an electric control box and a heat dissipation pipe, the electric control box is of a closed structure, and the heat dissipation pipe is connected between the throttling device and an air return opening of the compressor in series and matched with the electric control box in a heat transfer mode. According to the air conditioner, the electric control box can give consideration to sealing performance and good heat dissipation performance, and the reliability of the air conditioner can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and more particularly to an air conditioner. Background Art

[0002] Some air conditioners in the related art use flammable refrigerants. When the refrigerant leaks and comes into contact with the electronic control box, it is likely to cause an explosion risk. In addition, when the electronic control box generates a large amount of heat during operation, it will affect the working reliability of the electronic control box. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. For this reason, the present application proposes an air conditioner, and the electronic control box of the air conditioner can balance airtightness and good heat dissipation, which is beneficial to improving the reliability of the air conditioner.

[0004] The air conditioner according to an embodiment of the present application includes: a refrigerant circulation system including a compressor, a first heat exchanger, a second heat exchanger, and a throttling device. The exhaust port of the compressor is communicated with one of the first heat exchanger and the second heat exchanger, the suction port of the compressor is communicated with the other of the first heat exchanger and the second heat exchanger, and the throttling device is connected in series between the first heat exchanger and the second heat exchanger; an electronic control heat dissipation component including an electronic control box and a heat dissipation pipe. The electronic control box is an airtight structure, and the heat dissipation pipe is connected in series between the throttling device and the suction port of the compressor and is in heat transfer cooperation with the electronic control box.

[0005] In the air conditioner according to the present application, by setting the electronic control box in an airtight form, when the refrigerant circulation system uses a flammable refrigerant and the refrigerant leaks, the leaked refrigerant will not enter the electronic control box to cause an explosion risk, thereby improving the working reliability of the electronic control box. And, since the heat dissipation pipe is connected in series between the throttling device and the suction port of the compressor, it means that the low-temperature refrigerant after throttling by the throttling device passes through the heat dissipation pipe before entering the suction port of the compressor. In this way, the temperature of the refrigerant flowing through the heat dissipation pipe is relatively low, and through the heat transfer between the heat dissipation pipe and the electronic control box, the heat dissipation pipe can absorb the heat of the electronic control box, thereby realizing the heat dissipation of the electronic control box. In addition, there is no need to add a heat dissipation control strategy, which reduces the production cost and improves the reliability of the air conditioner.

[0006] In some embodiments, the heat dissipation pipe is connected in series between one of the first heat exchanger and the second heat exchanger serving as an evaporator and the suction port of the compressor.

[0007] In some embodiments, the exhaust port of the compressor is communicated with the first heat exchanger, the suction port of the compressor is communicated with the second heat exchanger, and the heat dissipation pipe is connected in series between the suction port of the compressor and the second heat exchanger.

[0008] In some embodiments, the refrigerant circulation system includes a switching valve. The switching valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port. The first valve port is switched to communicate with one of the second valve port and the third valve port, and the fourth valve port is switched to communicate with the other of the second valve port and the third valve port. The exhaust port of the compressor is communicated with the first valve port, the suction port of the compressor is communicated with the fourth valve port, the second valve port is communicated with the first heat exchanger, the third valve port is communicated with the second heat exchanger, and the heat dissipation pipe is connected in series between the fourth valve port and the suction port of the compressor.

[0009] In some embodiments, the electric control box includes a sealed box body and a circuit board disposed inside the box body. The box body includes a first box cover and a second box cover. The first box cover and the second box cover are arranged along the thickness direction of the circuit board and cover each other, and the first box cover and the second box cover form a circumferential sealing fit at the joint.

[0010] In some embodiments, a first sealing structure is integrally formed at the edge of the first box cover, and a second sealing structure is integrally formed at the edge of the second box cover. The first sealing structure and the second sealing structure form a circumferential sealing fit through shape matching.

[0011] In some embodiments, one of the first sealing structure and the second sealing structure is a groove defined by two side plates, and the other is an insertion plate inserted into the groove; alternatively, both the first sealing structure and the second sealing structure are stepped sealing structures, and the first sealing structure and the second sealing structure are sealed through stepped reverse buckling.

[0012] In some embodiments, the electric control box includes a sealed box body and a circuit board disposed inside the box body. The box body has an installation opening, and the electric control box further includes a wire threading structure. The wire threading structure is sealed at the installation opening and defines a wire threading pore.

[0013] In some embodiments, the box body has a wiring operation opening, the installation opening is located at the edge of the wiring operation opening, the wire threading structure is embedded in the installation opening, and the box body assembly further includes an operation opening cover plate. The operation opening cover plate is installed on the box body and covers the wiring operation opening and the wire threading structure.

[0014] In some embodiments, the wire threading pore penetrates the wire threading structure in the direction towards the operation opening cover plate and also penetrates the wire threading structure in the direction parallel to the operation opening cover plate. The operation opening cover plate has a protruding portion extending towards the inside of the box body, and the protruding portion extends into the wire threading pore expanded by the wire body.

[0015] In some embodiments, the threading structure has a hollow hole penetrating in the direction towards the operation port cover plate, and the protruding portion also extends into the hollow hole.

[0016] In some embodiments, the electric control box includes a sealed box body and a circuit board disposed in the box body. The electric control box includes a heat dissipation structure. The inner end of the heat dissipation structure absorbs heat in the box body, and the heat dissipation pipe is located outside the box body and is in heat transfer cooperation with the heat dissipation structure.

[0017] In some embodiments, a first pipe groove is formed on the outer surface of the heat dissipation structure and opens in a direction away from the box body, and the heat dissipation pipe is embedded in the first pipe groove.

[0018] In some embodiments, a gland is installed on the outer side of the heat dissipation structure, and the gland and the heat dissipation structure sandwich the heat dissipation pipe.

[0019] In some embodiments, the box body includes a first box cover. The first box cover is made of a non-metallic material and has a penetrating opening area, and the heat dissipation structure is sealed at the opening area.

[0020] In some embodiments, the heat dissipation structure is integrally connected to the first box cover; alternatively, the heat dissipation structure is assembled and connected to the first box cover; alternatively, the heat dissipation structure is installed on the circuit board and penetrates through the opening area.

[0021] In some embodiments, a first pipe groove is formed on the outer surface of the heat dissipation structure and opens in a direction away from the box body, and the heat dissipation pipe is embedded in the first pipe groove. The first box cover is provided with a limit buckle that is in snap-fit with the heat dissipation pipe.

[0022] In some embodiments, the box body includes a first box cover and a second box cover. The second box cover includes an end plate and a surrounding plate. The surrounding plate is disposed around the end plate to form a receiving cavity for receiving the circuit board between the end plate and the surrounding plate. One end of the surrounding plate away from the end plate defines an opening. The first box cover is disposed on one side of the surrounding plate away from the end plate and is connected to the surrounding plate to cover the opening. The first box cover is made of a metal material, and the heat dissipation structure is a part of the first box cover.

[0023] In some embodiments, the heat dissipation structure includes a heat dissipation portion extending in the direction towards the circuit board, and the heat dissipation portion includes a plurality of heat dissipation units arranged at intervals.

[0024] In some embodiments, at least a part of the heat dissipation portion is correspondingly arranged with the heat dissipation pipe.

[0025] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0026] Figure 1 is a schematic diagram of an air conditioner system according to an embodiment of the present application;

[0027] Figure 2 is a schematic diagram of an air conditioner system according to another embodiment of the present application;

[0028] Figure 3 is a schematic diagram of an electronically controlled heat dissipation component according to an embodiment of the present application;

[0029] Figure 4 is Figure 3 an exploded view of the electronically controlled heat dissipation component shown in

[0030] Figure 5 is a partial composition diagram of an electronically controlled heat dissipation component according to an embodiment of the present application;

[0031] Figure 6 is a schematic diagram of an electronically controlled heat dissipation component according to another embodiment of the present application;

[0032] Figure 7 is Figure 6 a schematic diagram of the first box cover of the electronically controlled heat dissipation component shown in

[0033] Figure 8 is a schematic diagram of an electronically controlled heat dissipation component according to yet another embodiment of the present application;

[0034] Figure 9 is a partial schematic diagram of a box body according to an embodiment of the present application;

[0035] Figure 10 is Figure 9 a partial enlarged view of location A shown in

[0036] Figure 11 is a partial schematic diagram of a box body according to another embodiment of the present application;

[0037] Figure 12 is Figure 11 a partial enlarged view of location B shown in

[0038] Figure 13 is a partial composition diagram of a box body according to an embodiment of the present application;

[0039] Figure 14 is Figure 13 a mating diagram of the box body and the wire threading structure shown in

[0040] Figure 15 Schematic diagram of an electronically controlled heat dissipation component according to another embodiment of the present application;

[0041] Figure 16 is Figure 15 Exploded view of a partial structure of the electronically controlled heat dissipation component shown in

[0042] Figure 17 is Figure 16 View C of the wire threading structure on the right side shown in

[0043] Figure 18 is Figure 17 Schematic diagram of the cooperation of the wire threading structure with the wire body and the operation port cover plate shown in

[0044] Reference numerals:

[0045] Air conditioner 1000;

[0046] Refrigerant circulation system 100; Compressor 11; Exhaust port 111; Suction port 112; First heat exchanger 12; Second heat exchanger 13; Throttling device 14; Switching valve 16; First valve port 161; Second valve port 162; Third valve port 163; Fourth valve port 164;

[0047] Electronically controlled heat dissipation component 200;

[0048] Electrical control box 2;

[0049] Box body 21; First box cover 211; Opening area 2111; Limit buckle 2112;

[0050] First sealing structure 2113; Side plate 21131; Groove 21132;

[0051] First-stage stepped bottom plate 21133; First-stage stepped inner side plate 21134;

[0052] Second box cover 212; End plate 2121; Enclosure plate 2122;

[0053] Second sealing structure 2123; Insert plate 21231;

[0054] First-stage stepped top plate 21233; First-stage stepped outer side plate 21234;

[0055] Mounting port 214; Wiring operation port 215;

[0056] Circuit board 22; Substrate 221; First heating device 222; Second heating device 223;

[0057] Thermal conductive medium 24;

[0058] Heat dissipation structure 26; First pipe groove 261; Heat dissipation part 262; Heat dissipation unit 2621;

[0059] Gland 27; second pipe groove 271;

[0060] Threading structure 28; threading hole 281; hollow hole 282; undercut structure 283;

[0061] Operation port cover plate 29; raised portion 291;

[0062] Heat dissipation pipe 3; Line body 4. DETAILED DESCRIPTION

[0063] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0064] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can appreciate the applicability of other processes and / or the use of other materials.

[0065] Hereinafter, an air conditioner 1000 according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0066] According to the embodiment of the present application, the type of the air conditioner 1000 is not limited. It can be an integrated air conditioner (such as a mobile air conditioner or a window air conditioner, etc.), or a split air conditioner (such as a split cabinet unit, a split wall unit, etc.), or a ceiling unit, a duct unit, etc. There is no limitation here. To simplify the description, the following text takes the air conditioner 100 as a split air conditioner as an example.

[0067] like Figure 1 and Figure 2 As shown, the air conditioner 1000 includes a refrigerant circulation system 100 and an electronically controlled heat dissipation component 200 .

[0068] like Figure 1 and Figure 2As shown, the refrigerant circulation system 100 includes a compressor 11, a first heat exchanger 12, a second heat exchanger 13, and a throttling device 14. The exhaust port 111 of the compressor 11 is connected to one of the first heat exchanger 12 and the second heat exchanger 13, and the suction port 112 of the compressor 11 is connected to the other of the first heat exchanger 12 and the second heat exchanger 13. The throttling device 14 is connected in series between the first heat exchanger 12 and the second heat exchanger 13.

[0069] As Figure 1 and Figure 2 shown, the electric control heat dissipation component 200 includes an electric control box 2 and a heat dissipation pipe 3. The electric control box 2 is a closed structure. The heat dissipation pipe 3 is connected in series between the throttling device 14 and the suction port 112 of the compressor 11, and the heat dissipation pipe 3 is in heat transfer cooperation with the electric control box 2. The statement that "the electric control box 2 is a closed structure" means that there are no ventilation holes or other structures that can ventilate on the box body of the electric control box 2, the space inside the box body does not have air flow communication with the space outside the box body, and parts such as the splicing joints and wiring joints of the box body are sealed.

[0070] Thus, for the air conditioner 1000 according to the embodiment of the present application, by setting the electric control box 2 in a closed form, when the refrigerant circulation system 100 uses a combustible refrigerant and refrigerant leaks, the leaked refrigerant will not enter the electric control box 2 to cause an explosion, thereby improving the working reliability of the electric control box 2. And, since the heat dissipation pipe 3 is connected in series between the throttling device 14 and the suction port 112 of the compressor 11, it shows that the low-temperature refrigerant after throttling by the throttling device 14 passes through the heat dissipation pipe 3 before entering the suction port 112 of the compressor 11. In this way, the temperature of the refrigerant flowing through the heat dissipation pipe 3 is relatively low, and through the heat transfer between the heat dissipation pipe 3 and the electric control box 2, the heat dissipation pipe 3 can absorb the heat of the electric control box 2, thereby realizing the heat dissipation of the electric control box 2. In addition, there is no need to add a heat dissipation control strategy, which reduces the production cost and improves the reliability of the air conditioner 1000.

[0071] In some embodiments, all the refrigerant participating in the circulation in the refrigerant circulation system 100 can pass through the heat dissipation pipe 3. The refrigerant flow rate through the heat dissipation pipe 3 is large, which can achieve a good temperature reduction effect on the electric control box 2, thereby improving the working stability of the electric control box 2 and further improving the use performance of the air conditioner 1000.

[0072] In some embodiments of the present application, the heat dissipation pipe 3 is connected in series between one of the first heat exchanger 12 and the second heat exchanger 13 serving as an evaporator and the suction port 112 of the compressor 11.

[0073] Among them, the throttling device 14 is connected in series between the first heat exchanger 12 and the second heat exchanger 13. If the refrigerant flows from the first heat exchanger 12 to the second heat exchanger 13, the first heat exchanger 12 is a condenser, and the second heat exchanger 13 is an evaporator. At this time, the heat dissipation pipe 3 is connected in series between the second heat exchanger 13 and the suction port 112 of the compressor 11. The refrigerant discharged from the discharge port 111 of the compressor 11 flows through the first heat exchanger 12, the throttling device 14, the second heat exchanger 13, and the heat dissipation pipe 3 in sequence, and then returns to the compressor 11 through the suction port 112 of the compressor 11. In this way, the refrigerant flowing into the heat dissipation pipe 3 is throttled by the throttling device 14 first and then evaporates and absorbs heat through the second heat exchanger 13 as an evaporator. Therefore, the temperature of the refrigerant flowing into the heat dissipation pipe 3 is relatively low, which is beneficial to the heat dissipation of the electronic control box 2.

[0074] Among them, the throttling device 14 is connected in series between the first heat exchanger 12 and the second heat exchanger 13. If the refrigerant flows from the second heat exchanger 13 to the first heat exchanger 12, the second heat exchanger 13 is a condenser, and the first heat exchanger 12 is an evaporator. At this time, the heat dissipation pipe 3 is connected in series between the first heat exchanger 12 and the suction port 112 of the compressor 11. The refrigerant discharged from the discharge port 111 of the compressor 11 flows through the second heat exchanger 13, the throttling device 14, the first heat exchanger 12, and the heat dissipation pipe 3 in sequence, and then returns to the compressor 11 through the suction port 112 of the compressor 11. In this way, the refrigerant flowing into the heat dissipation pipe 3 is throttled by the throttling device 14 first and then evaporates and absorbs heat through the first heat exchanger 12 as an evaporator. Therefore, the temperature of the refrigerant flowing into the heat dissipation pipe 3 is relatively low, which is beneficial to the heat dissipation of the electronic control box 2.

[0075] For example, in some embodiments of the present application, as Figure 1 shown, the refrigerant circulation system 100 includes a switching valve 16. The switching valve 16 includes a first valve port 161, a second valve port 162, a third valve port 163, and a fourth valve port 164. The first valve port 161 is switched to communicate with one of the second valve port 162 and the third valve port 163, and the fourth valve port 164 is switched to communicate with the other of the second valve port 162 and the third valve port 163. The discharge port 111 of the compressor 11 is communicated with the first valve port 161, the suction port 112 of the compressor 11 is communicated with the fourth valve port 164, the second valve port 162 is communicated with the first heat exchanger 12, the third valve port 163 is communicated with the second heat exchanger 13, and the heat dissipation pipe 3 is connected in series between the suction port 112 of the compressor 11 and the fourth valve port 164.

[0076] At this time, the air conditioner 1000 can be a cooling and heating air conditioner. For example, the first heat exchanger 12 is an outdoor heat exchanger, and the second heat exchanger 13 is an indoor heat exchanger.

[0077] As Figure 1As shown in the figure, when the air conditioner 1000 is in the cooling mode, the first valve port 161 and the second valve port 162 of the switching valve 16 are in communication, and the third valve port 163 and the fourth valve port 164 are in communication. The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas and discharges it from the exhaust port 111. The refrigerant enters the switching valve 16 from the first valve port 161, and enters the first heat exchanger 12 through the second valve port 162 of the switching valve 16. After flowing out of the first heat exchanger 12, the refrigerant flows through the throttling device 14 and the second heat exchanger 13 in sequence, enters the switching valve 16 from the third valve port 163 of the switching valve 16, and enters the heat dissipation pipe 3 through the fourth valve port 164, and then returns to the compressor 11 through the suction port 112. In this way, the refrigerant flowing into the heat dissipation pipe 3 is throttled by the throttling device 14 first, and then evaporated and absorbs heat through the second heat exchanger 13 acting as an evaporator. Therefore, the temperature of the refrigerant flowing into the heat dissipation pipe 3 is relatively low, which is beneficial to the heat dissipation of the electronic control box 2.

[0078] As Figure 1 shown in the figure, when the air conditioner 1000 is in the heating mode, the first valve port 161 and the third valve port 163 of the switching valve 16 are in communication, and the second valve port 162 and the fourth valve port 164 are in communication. The compressor 11 compresses the refrigerant into a high-temperature and high-pressure gas and discharges it from the exhaust port 111. The refrigerant enters the switching valve 16 from the first valve port 161, and enters the second heat exchanger 13 after passing through the third valve port 163 of the switching valve 16; after flowing out of the second heat exchanger 13, the refrigerant flows through the throttling device 14 and the first heat exchanger 12 in sequence, enters the switching valve 16 from the second valve port 162, and enters the heat dissipation pipe 3 through the fourth valve port 164, and then returns to the compressor 11 through the suction port 112. In this way, the refrigerant flowing into the heat dissipation pipe 3 is throttled by the throttling device 14 first, and then evaporated and absorbs heat through the first heat exchanger 12 acting as an evaporator. Therefore, the temperature of the refrigerant flowing into the heat dissipation pipe 3 is relatively low, which is beneficial to the heat dissipation of the electronic control box 2.

[0079] It can be seen from this that when the refrigerant circulation system 100 includes the above-mentioned switching valve 16, the heat dissipation pipe 3 is connected in series between the suction port 112 of the compressor 11 and the fourth valve port 164, so that the heat dissipation pipe 3 can be connected in series between one of the first heat exchanger 12 and the second heat exchanger 13 acting as an evaporator and the suction port 112 of the compressor 11. In this way, the refrigerant flowing through the heat dissipation pipe 3 flows out of the evaporator after evaporating and absorbing heat. At this time, the temperature of the refrigerant is relatively low. Through the heat transfer between the heat dissipation pipe 3 and the electronic control box 2, the heat dissipation pipe 3 can absorb the heat of the electronic control box 2, thereby realizing the rapid heat dissipation of the electronic control box 2.

[0080] In some other embodiments of the present application, such as Figure 2As shown, the exhaust port 111 of the compressor 11 is communicated with the first heat exchanger 12, and the suction port 112 of the compressor 11 is communicated with the second heat exchanger 13. At this time, the first heat exchanger 12 serves as a condenser, and the second heat exchanger 13 serves as an evaporator. The heat dissipation pipe 3 is connected in series between the suction port 112 of the compressor 11 and the second heat exchanger 13, that is, the heat dissipation pipe 3 is connected in series between the first heat exchanger 12 and the second heat exchanger 13 which serves as an evaporator and the suction port 112 of the compressor 11. At this time, the air conditioner 1000 can be a single-cooling air conditioner or a single-heating air conditioner.

[0081] For example, the air conditioner 1000 is a single-cooling air conditioner, the first heat exchanger 12 is an outdoor heat exchanger, and the second heat exchanger 13 is an indoor heat exchanger. When the compressor 11 operates, the refrigerant discharged by the compressor 11 first enters the first heat exchanger 12 serving as an outdoor heat exchanger. After throttling by the throttling device 14, it enters the second heat exchanger 13 serving as an indoor heat exchanger, then enters the heat dissipation pipe 3, and then returns to the compressor 11. At this time, the temperature of the first heat exchanger 12 serving as an outdoor heat exchanger is relatively high, and the temperature of the second heat exchanger 13 serving as an indoor heat exchanger is relatively low. The air conditioner 1000 can be used for indoor cooling. Moreover, the refrigerant flowing through the heat dissipation pipe 3 flows out from the second heat exchanger 13 after evaporation and heat absorption. At this time, the temperature of the refrigerant is relatively low. Through the heat transfer between the heat dissipation pipe 3 and the electronic control box 2, the heat dissipation pipe 3 can absorb the heat of the electronic control box 2, thereby realizing the rapid heat dissipation of the electronic control box 2.

[0082] For example, the air conditioner 1000 is a single-heating air conditioner, the first heat exchanger 12 is an indoor heat exchanger, and the second heat exchanger 13 is an outdoor heat exchanger. When the compressor 11 operates, the refrigerant discharged by the compressor 11 first enters the first heat exchanger 12 serving as an indoor heat exchanger. After throttling by the throttling device 14, it enters the second heat exchanger 13 serving as an outdoor heat exchanger, then enters the heat dissipation pipe 3, and then returns to the compressor 11. At this time, the temperature of the first heat exchanger 12 serving as an indoor heat exchanger is relatively high, and the temperature of the second heat exchanger 13 serving as an outdoor heat exchanger is relatively low. The air conditioner 1000 can be used for indoor heating. Moreover, the refrigerant flowing through the heat dissipation pipe 3 flows out from the second heat exchanger 13 after evaporation and heat absorption. At this time, the temperature of the refrigerant is relatively low. Through the heat transfer between the heat dissipation pipe 3 and the electronic control box 2, the heat dissipation pipe 3 can absorb the heat of the electronic control box 2, thereby realizing the rapid heat dissipation of the electronic control box 2.

[0083] Reference Figure 3 and Figure 4 In some embodiments, referring to and, the electronic control box 2 includes a sealed box body 21 and a circuit board 22 disposed inside the box body 21, and the heat dissipation pipe 3 is located outside the box body 21. Thus, by disposing the heat dissipation pipe 3 outside the sealed box body 21, the risk that the heat dissipation pipe 3 accidentally leaks and the refrigerant enters the box body 21 and contacts the circuit board 22 to cause an explosion can be avoided, and thus the safety of the electronic control box 2 can be improved.

[0084] Among them, the circuit board 22 may include a substrate 221 and devices provided on the substrate 221. The devices include heat-generating devices, such as passive devices (such as capacitors and inductors), power devices (such as rectifier bridges, IGBTs, diodes, IPMs), etc. When the circuit board 22 operates, the heat-generating devices will release heat. "The box body 21 is airtight" means that the box body 21 does not have a ventilation structure such as a ventilation hole, and the space inside the box body 21 does not have air flow circulation with the space outside the box body 21. The joints and wiring parts of the box body 21 are sealed. For example, the joints can be sealed by the cooperation of the first sealing structure 2113 and the second sealing structure 2123 described in this article or by an O-ring. For example, the wiring part can be sealed by the wire-passing structure 28, the operation port cover plate 29, etc. described in this article.

[0085] Reference Figure 3 and Figure 4 In some embodiments, the electric control box 2 includes a heat dissipation structure 26. The inner end of the heat dissipation structure 26 absorbs heat inside the box body 21, and the heat dissipation pipe 3 outside the box body 21 is in heat transfer cooperation with the heat dissipation structure 26. In this way, the heat dissipation structure 26 can absorb the heat inside the box body 21 and transfer the heat to the heat dissipation pipe 3 outside the box body 21, thereby achieving the effect of dissipating heat from the electric control box 2. For example, the first heat dissipation structure 23 can be made of materials such as metal or graphite, so that the first heat dissipation structure 23 can have better heat conduction ability.

[0086] Reference Figure 5 In some embodiments, a first pipe groove 261 that opens in a direction away from the box body 21 is formed on the outer surface of the heat dissipation structure 26, and the heat dissipation pipe 3 is embedded in the first pipe groove 261. Thus, by embedding the heat dissipation pipe 3 in the first pipe groove 261, the contact area between the heat dissipation pipe 3 and the heat dissipation structure 26 can be increased, so that the heat dissipation pipe 3 can absorb heat more fully, improving the heat dissipation efficiency of the electric control box 2. Moreover, by providing the first pipe groove 261 that opens in a direction away from the box body 21 on the second radiator 232, the installation efficiency of the heat dissipation pipe 3 can be improved, facilitating the assembly of the heat dissipation pipe 3. For example, after the refrigeration cycle system where the compressor 11 is located is assembled, one end of the refrigerant pipe can be pulled out as the heat dissipation pipe 3 and assembled to the first pipe groove 261.

[0087] Of course, the present application is not limited to this. For example, in other embodiments of the present application, through holes that are open at both ends in length can also be formed on the heat dissipation structure 26, and the heat dissipation pipe 3 can be installed into the through holes formed on the heat dissipation structure 26 by means such as expanding the pipe.

[0088] In some embodiments, a gland 27 is installed on the outside of the heat dissipation structure 26, and the gland 27 and the heat dissipation structure 26 sandwich the heat dissipation pipe 3. Thus, by providing the gland 27, the cooperation stability between the heat dissipation pipe 3 and the heat dissipation structure 26 can be improved, and the heat dissipation reliability of the electric control box 2 can be improved.

[0089] Exemplarily, a second pipe groove 271 that mates with the first pipe groove 261 may be formed on the gland 27, and the heat dissipation pipe 3 is also embedded in the second pipe groove 271 at the same time, thereby improving the limiting stability of the gland 27 for the heat dissipation pipe 3.

[0090] Exemplarily, the gland 27 is assembled and connected to the heat dissipation structure 26, thereby facilitating the fixed installation of the gland 27. However, the present application is not limited thereto. For example, the gland 27 may also be arranged to be connected to the box body 21 or the like.

[0091] Exemplarily, the box body 21 includes a first box cover 211, and the heat dissipation structure 26 is arranged corresponding to the first box cover 211. Among them, the mating relationship between the heat dissipation structure 26 and the first box cover 211 is not limited, and the following examples are described.

[0092] In some embodiments, in combination with Figure 5 , the box body 21 includes a first box cover 211. The first box cover 211 is made of a non-metallic material and has a through opening area 2111 thereon, and the heat dissipation structure 26 is sealed at the opening area 2111. Thus, by providing the first box cover 211 made of a non-metallic material and providing the opening area 2111 on the non-metallic first box cover 211, and being sealed by the heat dissipation structure 26 with better thermal conductivity, it can not only meet the heat dissipation requirements, but also save the use of metal materials, reducing the weight and cost of the box body 21.

[0093] Specifically, when "the box body 21 includes a first box cover 211, the first box cover 211 is made of a non-metallic material and has a through opening area 2111 thereon, and the heat dissipation structure 26 is sealed at the opening area 2111", there are also various installation schemes for the heat dissipation structure 26. For example, in some embodiments, the heat dissipation structure 26 may be integrally connected to the first box cover 211. Or, in some other embodiments, the heat dissipation structure 26 is assembled and connected to the first box cover 211. Or, in some other embodiments, the heat dissipation structure 26 is installed on the circuit board 22 and passes through the opening area 2111.

[0094] Among them, when the heat dissipation structure 26 is integrally connected to the first lid 211, the connection between the heat dissipation structure 26 and the first lid 211 can be achieved without subsequent assembly steps, improving the assembly efficiency. Moreover, the sealing performance at the connection between the heat dissipation structure 26 and the first lid 211 is easier to control, enhancing the safety of the electronic control box 2. Additionally, the heat dissipation structure 26 can be more reliably and stably connected to the first lid 211, improving the reliability of heat dissipation. The way of integrally connecting the heat dissipation structure 26 to the first lid 211 is not limited. For example, when the first lid 211 is a plastic part, the heat dissipation structure 26 can be disposed in the molding die of the first lid 211 and integrally injection-molded to the first lid 211, or the heat dissipation structure 26 can also be connected to the first lid 211 by means such as pasting or welding.

[0095] Among them, when the heat dissipation structure 26 is assembled and connected to the first lid 211, the heat dissipation structure 26 can be fixed to the first lid 211 by means such as snap connection, threaded connection, riveting, etc., thereby simplifying the processing of the first lid 211. Moreover, by assembling and connecting the heat dissipation structure 26 to the first lid 211, it is beneficial to seal the opening area 2111.

[0096] Among them, when the heat dissipation structure 26 is installed on the circuit board 22 and passes through the opening area 2111, the heat transfer stability between the heat dissipation structure 26 and the circuit board 22 can be improved, which is beneficial for the circuit board 22 to transfer heat to the heat dissipation structure 26 more fully. Moreover, the setting of the heat dissipation structure 26 will not cause pressure on the first lid 211, and the volume of the heat dissipation structure 26 can be flexibly set, facilitating the improvement and optimization of the heat transfer effect of the heat dissipation structure 26.

[0097] Among them, the number of the opening areas 2111 is not limited and can be one or more. For example, in some embodiments, such as Figure 8As shown, the circuit board 22 includes a substrate 221, a first heating device 222 and a second heating device 223 disposed on the substrate 221. Both the first heating device 222 and the second heating device 223 are disposed on one side of the substrate 221 facing the first lid 211. The first lid 211 has two opening areas 2111, which are respectively arranged corresponding to the first heating device 222 and the second heating device 223. A heat dissipation structure 26 is arranged in each opening area 2111. Each heat dissipation structure 26 can be fixed by any one of the methods of "the heat dissipation structure 26 can be integrally connected to the first lid 211", "the heat dissipation structure 26 is assembled and connected to the first lid 211", and "the heat dissipation structure 26 is installed on the circuit board 22 and passes through the opening area 2111". Thus, by providing a plurality of opening areas 2111, the metal material used for the box body 21 can be further reduced, and the weight and cost of the box body 21 can be further reduced. Exemplarily, there is one heat dissipation tube 3 and the heat dissipation tube 3 includes two tube segments connected in series. The two tube segments respectively cooperate with the two heat dissipation structures 26, so that the structure can be further simplified, that is, when the refrigerant flows through the heat dissipation tube 3, it can exchange heat with one of the heat dissipation structures 26 first, and then exchange heat with the other two heat dissipation structures.

[0098] A first heat dissipation structure 23 is interposed between the first heating device 222, and a first heat dissipation structure 23 is also interposed between the first lid 211 and the second heating device 223. The first heat dissipation structures 23 at these two places are spaced apart. Each first heat dissipation structure 23 can be any one of the first radiator 231 and the second radiator 232, so as to avoid the thermal influence between the two first heating devices 222 and the second heating device 223. There is one heat dissipation tube 3 and the heat dissipation tube 3 includes two tube segments connected in series. The two tube segments respectively cooperate with the two first heat dissipation structures 23, so that the structure can be further simplified, that is, when the refrigerant flows through the heat dissipation tube 3, it can exchange heat with one of the first heat dissipation structures 23 first, and then exchange heat with the other heat dissipation structure.

[0099] In some other embodiments of the present application, in combination with Figure 6 and Figure 7, the first box cover 211 can also be made of metal, and the heat dissipation structure 26 is a part of the first box cover 211. At this time, the box body 21 can also include a second box cover 212. The second box cover 212 includes an end plate 2121 and a surrounding plate 2122. The surrounding plate 2122 is arranged around the end plate 2121 to form a receiving cavity for receiving the circuit board 22 between the end plate 2121 and the surrounding plate 2122. One end of the surrounding plate 2122 away from the end plate 2121 defines an opening. The first box cover 211 is arranged on the side of the surrounding plate 2122 away from the end plate 2121 and is connected to the surrounding plate 2122 to seal the opening. Thus, taking a part of the entire metal first box cover 211 as the heat dissipation structure 26 can simplify the overall structure of the electronic control box 2, reduce the assembly complexity, and is beneficial to dissipating heat in a larger range and improving the heat dissipation efficiency.

[0100] In some embodiments of the present application, in combination with Figure 4 and Figure 5 , the heat dissipation structure 26 includes a heat dissipation portion 262 extending in the direction towards the circuit board 22. The heat dissipation portion 262 includes a plurality of heat dissipation units 2621 arranged at intervals. Thus, by providing the heat dissipation portion 262, on the one hand, the contact area between the heat dissipation structure 26 and the air in the box body 21 can be increased to increase the heat dissipation efficiency, and on the other hand, the distance between the heat dissipation structure 26 and the circuit board 22 can be shortened, thereby enhancing the heat absorption effect on the circuit board 22 and further improving the heat dissipation efficiency. Among them, the shape of the heat dissipation unit 2621 is not limited. For example, it can be in the shape of a heat sink, or it can be in the shape of a heat dissipation protrusion, or it can be in the shape of a heat dissipation column. The heat dissipation column can be a cylinder, a prism, a conical column, etc. For example, the heat dissipation unit 2621 is a conical column and its cross-sectional area gradually decreases in the direction towards the circuit board 22.

[0101] Exemplarily, in combination with Figure 5 , at least a part of the heat dissipation portion 262 is arranged corresponding to the heat dissipation tube 3. Thus, the heat absorbed by the heat dissipation portion 262 can be transferred to the heat dissipation tube 3 more quickly, thereby improving the heat dissipation efficiency.

[0102] Exemplarily, the heat dissipation structure 26 and the circuit board 22 transfer heat through the heat conduction medium 24. Thus, through the heat conduction medium 24, the heat dissipation structure 26 and the circuit board 22 transfer heat indirectly, making the heat dissipation more efficient and improving the heat dissipation efficiency of the electronic control box 2. For example, the heat conduction medium 24 can include at least one of heat conduction metal, heat conduction silicone grease, heat conduction silica gel, heat conduction gasket, etc. For example, when the heat dissipation structure 26 includes the heat dissipation portion 262, the heat dissipation portion 262 and the circuit board 22 transfer heat through the heat conduction medium 24.

[0103] In some embodiments of the present application, in combination with Figure 4 and Figure 5, when a first pipe groove 261 that opens in a direction away from the box body 21 is formed on the outer surface of the heat dissipation structure 26, the heat dissipation pipe 3 is embedded in the first pipe groove 261, and when there is an opening area 2111 on the first box cover 211 made of a non-metallic material, a limit buckle 2112 that is in snap-fit with the heat dissipation pipe 3 can be provided on the first box cover 211. Thus, it is beneficial to improve the assembly efficiency of the heat dissipation pipe 3, improve the assembly stability of the heat dissipation pipe 3, and is beneficial to the subsequent assembly of the gland 27. In addition, in some other embodiments, by providing the limit buckle 2112, the gland 27 can also be omitted as needed, thereby reducing the weight and cost.

[0104] Exemplarily, in combination with Figure 4 and Figure 5 , limit buckles 2112 can be respectively provided at both length ends of the first pipe groove 261. In this way, when a pipe section of the heat dissipation pipe 3 is fitted with the first pipe groove 261, the limit buckles 2112 at both length ends of the first pipe groove 261 can be used for cooperation to improve the fitting stability between the heat dissipation pipe 3 and the first pipe groove 261.

[0105] It should be noted that on the premise of no contradiction, the first box cover 211 and the second box cover 212 in any of the above embodiments can be combined with the following embodiments to achieve the sealed design of the box body 21.

[0106] In some embodiments, in combination with Figure 3 and Figure 4 , when the box body 21 includes a first box cover 211 and a second box cover 212, the first box cover 211 and the second box cover 212 are arranged along the thickness direction of the circuit board 22 and cover each other, and a circumferential sealing fit is formed at the joint of the first box cover 211 and the second box cover 212. Thus, the structure of the box body 21 is simple, which is convenient for the assembly of the circuit board 22 and is beneficial to achieving the sealing of the box body 21. For example, the circuit board 22 can be pre-installed on the first box cover 211 or the second box cover 212, and then the first box cover 211 and the second box cover 212 are covered. Exemplarily, the first box cover 211 and the second box cover 212 can be connected by snap-fit and / or by threaded connectors, etc., so as to achieve rapid assembly.

[0107] For example, in some embodiments, a sealing ring fitted between the first lid 211 and the second lid 212 can be used to achieve a circumferential sealing fit at the joint between the first lid 211 and the second lid 212. For another example, in some other embodiments, a first sealing structure 2113 is integrally formed at the edge of the first lid 211, and a second sealing structure 2123 is integrally formed at the edge of the second lid 212. The first sealing structure 2113 and the second sealing structure 2123 form a circumferential sealing fit through shape matching. Thus, the sealing ring can be omitted to avoid leakage problems caused by the failure of the sealing ring. For still another example, in some other embodiments, while using the cooperation of the first sealing structure 2113 and the second sealing structure 2123 to achieve sealing, a sealing ring can also be used to achieve further sealing.

[0108] In some embodiments, in combination Figure 9 and Figure 10 , one of the first sealing structure 2113 and the second sealing structure 2123 is a groove 21132 defined by two side plates 21131, and the other is an insertion plate 21231 inserted into the groove 21132. That is, one of the first sealing structure 2113 and the second sealing structure 2123 includes two side plates 21131, and a groove 21132 is formed between the two side plates 21131. One of the first sealing structure 2113 and the second sealing structure 2123 is an insertion plate 21231 inserted into the groove 21132. Thus, the structures of the first sealing structure 2113 and the second sealing structure 2123 are simple, facilitating processing and assembly, and having good sealing effects.

[0109] In some embodiments, in combination Figure 11 and Figure 12, both the first sealing structure 2113 and the second sealing structure 2123 are stepped sealing structures, and the first sealing structure 2113 and the second sealing structure 2123 are sealingly fitted by stepped reverse buckling. For example, one of the first sealing structure 2113 and the second sealing structure 2123 includes a first-stage stepped bottom plate 21133 and a first-stage stepped inner side plate 21134. The first-stage stepped inner side plate 21134 extends upward relative to the first-stage stepped bottom plate 21133, and the first-stage stepped inner side plate 21134 is located on the side of the first-stage stepped bottom plate 21133 close to the inside of the box body 21. The other of the first sealing structure 2113 and the second sealing structure 2123 includes a first-stage stepped top plate 21233 and a first-stage stepped outer side plate 21234. The first-stage stepped outer side plate 21234 extends downward relative to the first-stage stepped top plate 21233, and the first-stage stepped outer side plate 21234 is located on the side of the first-stage stepped top plate 21233 close to the outside of the box body 21. The first-stage stepped outer side plate 21234 is located on the side of the first-stage stepped inner side plate 21134 far from the inside of the box body 21. The first-stage stepped bottom plate 21133 abuts against the bottom of the first-stage stepped outer side plate 21234, and the first-stage stepped top plate 21233 abuts against the top of the first-stage stepped inner side plate 21134. Thus, the structures of the first sealing structure 2113 and the second sealing structure 2123 are simple, facilitating processing and assembly, and having a good sealing effect. It should be noted that the "top" and "bottom" directions described herein refer to the directions shown in the figure. When the electric control box 2 is installed and used, the "top" and "bottom" directions of the electric control box 2 are not limited to those shown in the figure. For example, the electric control box 2 shown in the figure can be installed upright, inverted, or vertically.

[0110] In some embodiments, as Figure 13 and Figure 14 shown, the closed box body 21 has an installation opening 214. The electric control box 2 further includes a wire threading structure 28. The wire threading structure 28 is sealed to the installation opening 214, and the wire threading structure 28 defines a wire threading pore 281. Thus, the sealing requirements at the wire threading location can be met. For example, when the box body 21 includes the above-mentioned first box cover 211 and second box cover 212 that are mutually covered, the installation opening 214 can be formed on one of the first box cover 211 and the second box cover 212, or formed between the first box cover 211 and the second box cover 212.

[0111] Exemplarily, the wire threading structure 28 is fixedly clamped to the box body 21 at the installation opening 214, for example, inserted into a card slot, thereby improving the assembly efficiency of the wire threading structure 28. For example, in combination with Figure 17 , the wire threading structure 28 has a reverse buckling structure 283, and the box body 21 has a snap structure located at the installation opening 214. The reverse buckling structure 283 can extend into the snap structure along the assembly direction, but cannot be pulled out reversely.

[0112] Exemplarily, in combination with Figure 14, the "thread-passing pore 281" can be formed into a perforated structure that penetrates the thread-passing structure 28 along the extending direction of the wire body 4, so that sealing can be simply achieved through the interference fit between the perforation and the wire body 4. Alternatively, by way of example, in combination with Figure 16 and Figure 17 , the "thread-passing pore 281" can also be formed into a gap structure that not only penetrates the thread-passing structure 28 along the extending direction of the wire body 4 but also penetrates the thread-passing structure 28 along the radial direction of the wire body 4, so that the wire body 4 can be snapped into the thread-passing pore 281 radially. In this way, the end of the wire body 4 with the connector can also be easily mated with the thread-passing structure 28, thus improving the convenience of assembly.

[0113] In some embodiments, in combination with Figure 15 and Figure 16 , the box body 21 is provided with a wiring operation port 215, the installation port 214 is located at the edge position of the wiring operation port 215, the thread-passing structure 28 is embedded in the installation port 214, and the electric control box 2 further includes an operation port cover plate 29 which is installed on the box body 21 and covers the wiring operation port 215 and the thread-passing structure 28. Thus, after the wire body 4 is mated with the thread-passing structure 28, the connector on the wire body 4 can be connected to the circuit board 22 through the wiring operation port 215, so that the box body 21 can be pre-assembled before wiring, thus facilitating the overall assembly and wiring of the electric control box 2. In addition, the operation port cover plate 29 can be set to be detachably connected to the box body 21, so that after the operation port cover plate 29 is removed from the box body 21, maintenance and the like can also be carried out through the wiring operation port 215, thus facilitating later maintenance.

[0114] In some embodiments, in combination with Figures 16 - 18 , the thread-passing pore 281 can penetrate the thread-passing structure 28 in the direction towards the operation port cover plate 29 and penetrate the thread-passing structure 28 along the direction parallel to the operation port cover plate 29. The wire body 4 passes through the thread-passing structure 28 by expanding the thread-passing pore 281 from the operation port cover plate 29 to the box body 21. The operation port cover plate 29 is provided with a convex portion 291 extending towards the inside of the box body 21, and the convex portion 291 extends into the thread-passing pore 281. Thus, the wire body 4 can be snapped into the thread-passing pore 281 radially, thus facilitating the assembly of the wire body 4 with the connector at the end and the thread-passing structure 28. And by providing the convex portion 291 extending towards the inside of the box body 21 on the operation port cover plate 29 to seal the expanded thread-passing pore 281, the sealing performance can be improved on the premise of relatively simple structure.

[0115] Exemplarily, the threading structure 28 may further have a hollow hole 282 penetrating in the direction towards the operation port cover plate 29. By providing the hollow hole 282, it is beneficial to the opening of the threading gap 281, as well as the weight reduction and cost reduction of the threading structure 28. At this time, the convex portion 291 may also be provided to extend into the hollow hole 282, so as to further improve the sealing performance on the premise of relatively simple structure.

[0116] When the air conditioner uses flammable and explosive refrigerants such as R290, since the refrigerant may burn and explode when encountering low-energy sparks at low concentrations, for safety reasons, the electric control box is set in a sealed form to reduce the explosion risk. However, components such as inductors, IGBTs, FRDs, and IPMs on the electric control board generate a large amount of heat. In high-temperature situations, it is more difficult for the sealed electric control box to dissipate heat, and the heat accumulates in the electric control box, causing the temperature of the components in the electric control box to rise, resulting in a decrease in the reliability of the electric control box.

[0117] Considering the air-cooled heat dissipation method (that is, large-sized components are attached to large radiators and the radiators are cooled by air), the air convection effect is relatively poor, and it is difficult to quickly remove the heat of the electric control box in a high-temperature environment, resulting in the air conditioner needing to operate at a reduced frequency to reduce the heat generation of the electric control box, which affects the refrigeration effect of the air conditioner. Moreover, air-cooled heat dissipation only dissipates heat from some heat-generating components that are easy to attach to the radiator, and cannot dissipate heat well for the sealed cavity and other high-power components such as PFC inductors and electrolytic capacitors.

[0118] Therefore, for the air conditioner according to the embodiments of the present application, the first box cover and the second box cover are coupled to each other to form a sealed box body, reducing the explosion risk and improving the reliability of the air conditioner. And through the cooperation of the electric control box and the refrigerant pipe, timely heat dissipation is achieved. The refrigerant in the refrigerant pipe is taken from the return air of the compressor, improving the heat dissipation effect of the electric control box and solving the problem that the air conditioner is limited in operation under high-temperature conditions.

[0119] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0120] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0121] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0122] In this application, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0123] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0124] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this application, and the scope of this application is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, Including: A refrigerant circulation system, including a compressor, a first heat exchanger, a second heat exchanger, and a throttling device. The exhaust port of the compressor is communicated with one of the first heat exchanger and the second heat exchanger, the suction port of the compressor is communicated with the other of the first heat exchanger and the second heat exchanger, and the throttling device is connected in series between the first heat exchanger and the second heat exchanger. An electronically controlled heat dissipation component, including an electronic control box and a heat dissipation pipe. The electronic control box is of a closed structure, and the heat dissipation pipe is connected in series between the throttling device and the suction port of the compressor and is in heat transfer cooperation with the electronic control box.

2. The air conditioner according to claim 1, characterized in that, The heat dissipation pipe is connected in series between one of the first heat exchanger and the second heat exchanger serving as an evaporator and the suction port of the compressor.

3. The air conditioner according to claim 2, wherein, The exhaust port of the compressor is communicated with the first heat exchanger, the suction port of the compressor is communicated with the second heat exchanger, and the heat dissipation pipe is connected in series between the suction port of the compressor and the second heat exchanger.

4. The air conditioner according to claim 2, characterized in that, The refrigerant circulation system includes a switching valve. The switching valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port. The first valve port is switched to be communicated with one of the second valve port and the third valve port, the fourth valve port is switched to be communicated with the other of the second valve port and the third valve port. The exhaust port of the compressor is communicated with the first valve port, the suction port of the compressor is communicated with the fourth valve port, the second valve port is communicated with the first heat exchanger, the third valve port is communicated with the second heat exchanger, and the heat dissipation pipe is connected in series between the fourth valve port and the suction port of the compressor.

5. The air conditioner according to claim 1, characterized in that, The electronic control box includes a closed box body and a circuit board arranged in the box body. The box body includes a first box cover and a second box cover. The first box cover and the second box cover are arranged along the thickness direction of the circuit board and cover each other, and the first box cover and the second box cover form a circumferential sealing fit at the joint.

6. The air conditioner according to claim 5, characterized in that, A first sealing structure is integrally formed at the edge of the first box cover, and a second sealing structure is integrally formed at the edge of the second box cover. The first sealing structure and the second sealing structure form a circumferential sealing fit through shape matching.

7. The air conditioner according to claim 6, characterized in that, One of the first sealing structure and the second sealing structure is a groove defined by two side plates, and the other is an insertion plate inserted into the groove; or, both the first sealing structure and the second sealing structure are stepped sealing structures, and the first sealing structure and the second sealing structure are sealed and matched through stepped buckling.

8. The air conditioner according to claim 1, characterized in that, The electronic control box includes a closed box body and a circuit board arranged in the box body. The box body has a mounting opening, and the electronic control box further includes a wire threading structure. The wire threading structure is sealed at the mounting opening and defines a wire threading pore.

9. The air conditioner according to claim 8, characterized in that, The box body has a wiring operation opening. The mounting opening is located at the edge position of the wiring operation opening. The wire threading structure is embedded in the mounting opening. The electronic control box further includes an operation opening cover plate, and the operation opening cover plate is mounted on the box body and covers the wiring operation opening and the wire threading structure.

10. The air conditioner according to claim 9, characterized in that, The wire threading aperture penetrates the wire threading structure in the direction towards the operation port cover plate, and penetrates the wire threading structure in a direction parallel to the operation port cover plate. The operation port cover plate has a convex portion extending towards the interior of the box body, and the convex portion extends into the wire threading aperture expanded by the wire body.

11. The air conditioner according to claim 10, characterized in that, The wire threading structure has a hollowed-out hole penetrating in the direction towards the operation port cover plate, and the convex portion also extends into the hollowed-out hole.

12. The air conditioner according to claim 1, characterized in that, The electric control box includes a sealed box body and a circuit board disposed inside the box body. The electric control box includes a heat dissipation structure. The inner end of the heat dissipation structure absorbs heat inside the box body, and the heat dissipation pipe is located outside the box body and is in heat transfer cooperation with the heat dissipation structure.

13. The air conditioner according to claim 12, characterized in that, A first pipe groove is formed on the outer surface of the heat dissipation structure and opens in a direction away from the box body, and the heat dissipation pipe is embedded in the first pipe groove.

14. The air conditioner according to claim 13, wherein A gland is installed outside the heat dissipation structure, and the gland and the heat dissipation structure sandwich the heat dissipation pipe.

15. The air conditioner according to claim 12, characterized in that, The box body includes a first box cover. The first box cover is made of a non-metallic material and has a penetrating opening area, and the heat dissipation structure is sealed at the opening area.

16. The air conditioner according to claim 15, characterized in that, The heat dissipation structure is integrally connected to the first box cover; alternatively, the heat dissipation structure is assembled and connected to the first box cover; alternatively, the heat dissipation structure is installed on the circuit board and penetrates the opening area.

17. The air conditioner according to claim 15, characterized in that, A first pipe groove is formed on the outer surface of the heat dissipation structure and opens in a direction away from the box body, and the heat dissipation pipe is embedded in the first pipe groove. The first box cover has a limit buckle that is in snap-fit with the heat dissipation pipe.

18. The air conditioner according to claim 12, characterized in that, The box body includes a first box cover and a second box cover. The second box cover includes an end plate and a surrounding plate. The surrounding plate is arranged around the end plate to form a receiving cavity for receiving the circuit board between the end plate and the surrounding plate. One end of the surrounding plate away from the end plate defines an opening. The first box cover is disposed on the side of the surrounding plate away from the end plate and is connected to the surrounding plate to cover the opening. The first box cover is made of a metal material, and the heat dissipation structure is a part of the first box cover.

19. The air conditioner according to claim 12, characterized in that, The heat dissipation structure includes a heat dissipation portion extending towards the circuit board. The heat dissipation portion includes a plurality of heat dissipation units arranged at intervals.

20. The air conditioner according to claim 19, characterized in that, At least a part of the heat dissipation portion is arranged corresponding to the heat dissipation pipe.

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