Air conditioner

Abstract

The present application relates to the technical field of air conditioners, and discloses an air conditioner. The air conditioner comprises a mounting member and an electric control box, wherein the mounting member is arranged on the air conditioner; the electric control box is arranged in the air conditioner, and a first heat dissipation channel is defined by the electric control box and the mounting member; the electric control box comprises a housing and a power device; an accommodating space is formed in the housing; the power device is disposed in the accommodating space; and the housing has a first side facing the first heat dissipation channel and a second side opposite to the first side, the first side being provided with first heat dissipation holes, the second side being provided with second heat dissipation holes, and the second heat dissipation holes being communicated with the first heat dissipation holes by means of the accommodating space.

Description

air conditioner

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202422111305.1, filed on August 28, 2024, and Chinese patent application No. 202421851798.6, filed on July 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air conditioner technology, and in particular to an air conditioner. Background Technology

[0004] The air conditioner's control box is a crucial component of the entire air conditioning system. It controls the air conditioner's start-up, operation, shutdown, and switching between various modes. The control box contains circuit boards, electronic components, and connecting wires, all of which generate heat during operation. Poor heat dissipation can cause the internal temperature of the control box to rise, affecting the normal operation of the air conditioner and potentially damaging electronic components, thus shortening the air conditioner's lifespan. Summary of the Invention

[0005] The main purpose of this application is to propose an air conditioner designed to improve the heat dissipation effect of the electrical control box.

[0006] To achieve the above objectives, the air conditioner proposed in this application includes:

[0007] Mounting components, provided on the air conditioner; and

[0008] An electrical control box is disposed inside the air conditioner and forms a first heat dissipation channel with the mounting component. The electrical control box includes a housing and a power device. An accommodating space is formed inside the housing, and the power device is disposed in the accommodating space. The housing has a first side facing the first heat dissipation channel and a second side facing a side different from the first side. The first side is provided with a first heat dissipation hole, and the second side is provided with a second heat dissipation hole. The second heat dissipation hole is connected to the first heat dissipation hole through the accommodating space.

[0009] In one embodiment, the housing includes an insulating shell and a fireproof shell covering the outside of the insulating shell. The second heat dissipation hole is provided on the fireproof shell. A heat dissipation structure is provided on the insulating shell. The heat dissipation structure enables the accommodating space to communicate with the second heat dissipation hole. At least a portion of the power device is disposed close to the heat dissipation structure.

[0010] In one embodiment, the heat dissipation structure is configured as a heat dissipation groove provided in the insulating shell, and the heat dissipation groove has a first opening facing the accommodating space and a second opening facing the fireproof shell, the second opening communicating with the second heat dissipation hole.

[0011] In one embodiment, the heat dissipation structure and the second opening are oriented differently, and the insulating shell and the fireproof shell are provided with a partial gap so that the heat dissipation structure can communicate with the second heat dissipation hole.

[0012] In one embodiment, the second heat dissipation hole and the second opening face the same direction, and the second heat dissipation hole and the second opening are staggered. The insulating shell and the fireproof shell are partially spaced so that the second opening communicates with the second heat dissipation hole.

[0013] In one embodiment, a portion of the insulating shell is provided with a recessed clearance platform that extends into the interior of the electrical control box, and the clearance platform extends from the second opening toward the second heat dissipation hole.

[0014] In one embodiment, a heat sink is provided in the first heat dissipation channel, and the first heat dissipation hole is disposed facing the heat sink.

[0015] In one embodiment, the heat sink is configured with a plurality of spaced-apart heat dissipation fins, and the heat dissipation fins extend along the extension direction of the first heat dissipation channel, and the first heat dissipation hole is disposed facing the side of the plurality of heat dissipation fins.

[0016] In one embodiment, the housing includes an insulating shell and a fireproof shell covering the outside of the insulating shell, the air guide is integrally formed on the insulating shell, and the fireproof shell is provided with a clearance opening for the air guide to extend.

[0017] In one embodiment, the power device includes a circuit board located between the first heat dissipation hole and the second heat dissipation hole, and a first power device near the first heat dissipation channel, wherein a second power device is provided on the circuit board near the first heat dissipation hole.

[0018] In one embodiment, a first clearance step is formed on the side of the housing facing the mounting member. The mounting member includes a support plate and a mounting plate arranged at an angle. The housing is mounted on the support plate. The first clearance step, the mounting plate, and part of the support plate enclose and form the first heat dissipation channel.

[0019] In one embodiment, the support plate is provided with a support rib, the support rib abuts against the electrical control box, and the electrical control box is spaced apart from the support plate. The housing is provided with a second clearance step on the side facing the support plate, and the second heat dissipation hole is provided on the second clearance step.

[0020] In one embodiment, the electrical control box includes a wiring bracket disposed inside the housing and spaced apart from the circuit board to form a first wiring space, the first wiring space being used for arranging conductive wire bundles inside the electrical control box;

[0021] The power device includes a circuit board, which is disposed within the housing.

[0022] In one embodiment, the first wiring space is configured as a first wiring groove on the wiring bracket, and the first wiring groove is provided with at least one first wire clamping structure, which is used to limit the position of the conductive wire bundle.

[0023] In one embodiment, the first wire-locking structure includes two spaced-apart first limiting members that extend toward each other to prevent the conductive wire bundle from coming out; and / or,

[0024] The first wire clamping structure includes a second limiting member. One end of the second limiting member is connected to one side of the first wire routing groove, and the other end extends to the other side of the first wire routing groove and is spaced apart from the other side of the first wire routing groove.

[0025] In one embodiment, the first cable tray includes a main tray section and at least one sub-slot section connecting the main tray section, and both the main tray section and the sub-slot section are provided with at least one first cable clamping structure; and / or,

[0026] The first wiring channel is curved, and the corners of the first wiring channel are chamfered.

[0027] In one embodiment, the conductive wire harness includes a high-voltage wire harness and a low-voltage wire harness, and the housing also has a second wiring space, in which the high-voltage wire harness is arranged in the first wiring space and the low-voltage wire harness is arranged in the second wiring space.

[0028] In one embodiment, a gap is provided between the circuit board and the inner wall of the housing to form the second wiring space; and / or,

[0029] The second wiring space is equipped with a second wire clamping structure.

[0030] In one embodiment, the wiring bracket includes a main body and a mounting part, the main body forming the first wiring space, the mounting part being snapped into the housing, and the main body being spaced apart from the circuit board.

[0031] In one embodiment, the cable routing bracket is spaced apart from the housing, and the distance between the cable routing bracket and the housing is greater than or equal to 5 mm.

[0032] In one embodiment, the housing is provided with a cable routing opening through which the conductive wire harness passes, and the cable routing opening is provided with a cable gathering portion, which is used to limit the conductive wire harness.

[0033] In one embodiment, the housing is further provided with a grounding component, the portion of which extends out of the housing is connected to a grounding wire to ground the electrical control box;

[0034] Furthermore, the housing is provided with an outwardly protruding anti-rotation protrusion, which is located on at least one side of the grounding member to limit the grounding wire.

[0035] In one embodiment, the housing is provided with a thickened portion, the grounding member and the anti-rotation protrusion are both installed on the thickened portion, and the thickness of the thickened portion is greater than the thickness of the periphery of the thickened portion.

[0036] In one embodiment, a thinning portion is provided in a part of the thickened portion, the anti-rotation protrusion portion is installed on the thinning portion, and the thickness of the thinning portion is less than the thickness of the rest of the thickened portion.

[0037] In one embodiment, the thickness of the housing is less than or equal to 0.6 mm;

[0038] The thickness of the thickened portion is greater than or equal to 0.6 mm and less than or equal to 1.2 mm;

[0039] The thickness of the thinned portion is greater than or equal to 0.6 mm and less than or equal to 0.8 mm.

[0040] In one embodiment, the housing includes a fireproof shell, the edge of which is provided with a flange that conforms to the outer surface of the fireproof shell to form the thickened portion; the thickened portion is partially thinned to form the thinned portion; a portion of the thinned portion has an outward protrusion to form the anti-rotation protrusion; and / or,

[0041] The housing has a mounting hole, and the grounding component is configured as a conductive fastener, which is threaded into the mounting hole.

[0042] The technical solution of this application involves installing a mounting component inside the air conditioner, with the electrical control box mounted on the mounting component, forming a first heat dissipation channel. Cooling air passes through the first heat dissipation channel, thereby removing heat from the surface of the electrical control box. Furthermore, the housing has a first heat dissipation hole on a first side facing the first heat dissipation channel and a second heat dissipation hole on a second side opposite to the first side. The second heat dissipation hole connects to the first heat dissipation hole through an accommodating space, thereby creating negative pressure through airflow within the first heat dissipation channel, promoting airflow within the accommodating space, thus accelerating heat dissipation efficiency and promptly cooling the electrical control box. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0044] Figure 1 is a schematic diagram of the electrical control box at an angle in an embodiment of the air conditioner provided in this application;

[0045] Figure 2 is a structural diagram of the electrical control box in Figure 1 after the fireproof shell has been removed;

[0046] Figure 3 is a schematic diagram of the electrical control box in Figure 1 from another angle;

[0047] Figure 4 is a cross-sectional view of the electrical control box along AA in Figure 3;

[0048] Figure 5 is a schematic diagram of the electrical control box in Figure 1 from another angle;

[0049] Figure 6 is a cross-sectional view of the electrical control box along BB in Figure 5;

[0050] Figure 7 is a cross-sectional view of the electrical control box along CC in Figure 5;

[0051] Figure 8 is a magnified view of part A in Figure 7;

[0052] Figure 9 is a schematic diagram of the internal structure of the air conditioner in Figure 1;

[0053] Figure 10 is an exploded view of the internal structure of the air conditioner in Figure 9;

[0054] Figure 11 is a schematic diagram of the internal structure of an embodiment of the electronic control box provided in this application from one angle.

[0055] Figure 12 is a magnified view of part F in Figure 11;

[0056] Figure 13 is a schematic diagram of the internal structure of the electrical control box in Figure 11 from another angle;

[0057] Figure 14 is a magnified view of a portion of point G in Figure 13;

[0058] Figure 15 is a cross-sectional view of the electrical control box in Figure 11;

[0059] Figure 16 is a magnified view of a portion of H in Figure 15;

[0060] Figure 17 is a schematic diagram of the electrical control box in Figure 11;

[0061] Figure 18 is a magnified view of part D in Figure 17;

[0062] Figure 19 is a schematic diagram of the internal structure of the electrical control box in Figure 11 from another angle;

[0063] Figure 20 is a magnified view of a portion of point E in Figure 19.

[0064] Reference numerals in the attached drawings: 1. Mounting component; 11. Support plate; 12. Mounting plate; 13. Support rib; 2. Electrical control box; 21. First heat dissipation channel; 211. Heat dissipation fins; 212. Air inlet; 213. Air outlet; 22. Housing; 221. Insulating shell; 222. Fireproof shell; 223. Clearance opening; 23. First heat dissipation hole; 24. Second heat dissipation hole; 25. Heat dissipation groove; 251. Second opening; 252. Clearance platform; 253. First opening; 26. Air guide cover; 27. First clearance step; 28. Second clearance step; 29. ​​Accommodation space; 291. Circuit board; 3. Heat exchanger; 4. Fan assembly ; 41. Air inlet side; 61. Accommodation space; 62. Second wiring space; 121. Second wire clamping structure; 122. Third limiting component; 63. Wiring opening; 131. Wiring gathering part; 14. Anti-rotation protrusion part; 15. Thickened part; 151. Thinned part; 7. Wiring bracket; 31. First wiring space; 311. First wiring groove; 312. Main groove section; 313. Sub-groove section; 32. First wire clamping structure; 321. First limiting component; 322. Second limiting component; 33. Main body part; 34. Mounting part; 8. Conductive wire harness; 81. High-voltage wire harness; 42. Low-voltage wire harness; 5. Grounding component; 51. Grounding wire.

[0065] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0066] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0067] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0068] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0069] This application discloses an air conditioner. This air conditioner can be a split-type air conditioner that is easy for users to install themselves. It uses flexible refrigerant pipes to connect the indoor heat exchanger of the indoor unit and the outdoor heat exchanger of the outdoor unit, and refrigerant is injected into the refrigerant circuit before the equipment leaves the factory. Thus, when users install the equipment themselves, they only need to fix the indoor and outdoor units separately, without needing to install refrigerant pipes or add refrigerant, thereby reducing installation difficulty and enabling individual installation. However, this design is not limited to this; in other embodiments, the air conditioner of this application can also be a conventional split-type air conditioner or an integrated air conditioner.

[0070] Please refer to Figures 1 to 10. In one embodiment of this application, the air conditioner includes:

[0071] Mounting component 1, installed on the air conditioner; and

[0072] The electrical control box 2 is located inside the air conditioner and is enclosed with the mounting component 1 to form a first heat dissipation channel 21. The electrical control box 2 includes a housing 22 and a power device. An accommodating space 29 is formed inside the housing 22, and the power device is located in the accommodating space 29. The housing 22 has a first side facing the first heat dissipation channel 21 and a second side facing the opposite side. The first side is provided with a first heat dissipation hole 23, and the second side is provided with a second heat dissipation hole 24. The second heat dissipation hole 24 is connected to the first heat dissipation hole 23 through the accommodating space 29.

[0073] Specifically, the air conditioner can be either an indoor unit or an outdoor unit; that is, the control box 2 can be installed in either the indoor or outdoor unit. The housing 22 of the control box 2 has a storage space 29 for accommodating the circuit board 291 and some power devices. As it is responsible for controlling the air conditioner's start-up, operation, shutdown, and switching between various modes, it generates a large amount of heat during operation. If this heat cannot be dissipated in time, it may cause the internal power devices to fail due to high temperatures, or even overheat and burn, affecting the normal operation of the air conditioner.

[0074] Therefore, the electrical control box 2 and the mounting component 1 for its installation form a first heat dissipation channel 21. Cooling air passes through the first heat dissipation channel 21, thereby removing heat from the surface of the electrical control box 2. The housing 22 has a first heat dissipation hole 23 on the first side facing the first heat dissipation channel 21 and a second heat dissipation hole 24 on the second side. The second heat dissipation hole 24 is connected to the first heat dissipation hole 23 through the accommodating space 29. Thus, the air flow in the first heat dissipation channel 21 forms a negative pressure, which promotes the air flow in the accommodating space 29 and forms a heat dissipation channel in the electrical control box 2, thereby accelerating the heat dissipation efficiency and dissipating heat for the electrical control box 2 in a timely manner.

[0075] The second side and the first side have different orientations, which allows the second side and the first side to be configured as two sidewalls adjacent to each other on the housing 22, or as two sidewalls opposite to each other on the housing 22. That is, the second heat dissipation hole 24 is not oriented toward the first heat dissipation channel 21, thereby forming a pressure difference between the first heat dissipation hole 23 and the second heat dissipation hole 24 to promote airflow in the electrical control box 2.

[0076] Please refer to Figures 9 and 10. The air conditioner has a heat exchanger 3 and a fan assembly 4. The heat exchanger 3 is spaced apart on the air inlet side 41 of the fan assembly 4 and faces the air inlet of the air conditioner. The air inlet end 212 of the first heat dissipation channel 21 is located on the side of the heat exchanger 3 away from the fan assembly 4, so as to directly connect to the air inlet of the air conditioner. The air outlet end 213 of the first heat dissipation channel 21 is located on the side of the heat exchanger 3 facing the fan assembly 4, so as to connect to the air inlet side 41. The air inlet end 212 and the air outlet end 213 of the first heat dissipation channel 21 are arranged across the heat exchanger 3, so that the air flowing through the first heat dissipation channel 21 does not need to be heat exchanged by the heat exchanger 3 and is natural wind. If the gas entering the first heat dissipation channel 21 is heat-exchanged gas, in cooling mode, the airflow temperature after heat exchange in the heat exchanger 3 is low, and condensation may occur when it enters the first heat dissipation channel 21. The condensation accumulates in the first heat dissipation channel 21 and is difficult to expel. It may also enter the electrical control box 2 through the second heat dissipation hole 24, causing water droplets to fall onto the power devices of the electrical control box 2, which can easily lead to malfunctions. In heating mode, the gas temperature after heat exchange in the heat exchanger 3 is high, and it is difficult to achieve the heat dissipation effect when it enters the first heat dissipation channel 21. Therefore, the air inlet 212 of the first heat dissipation channel 21 is directly connected to the air inlet to minimize the possibility of heat-exchanged gas from the heat exchanger 3 entering the first heat dissipation channel 21, thereby reducing the possibility of condensation forming in the first heat dissipation channel 21.

[0077] Furthermore, the air outlet 213 of the first heat dissipation channel 21 is located on the side of the heat exchanger 3 facing the fan assembly 4, so as to connect with the air inlet side 41. The air inlet side 41 of the fan assembly 4 forms a negative pressure zone. The air outlet 213 is directly connected to the air inlet side 41, which can also effectively accelerate the airflow speed through the first heat dissipation channel 21, thereby further accelerating the airflow on the surface and inside of the electrical control box 2, thereby quickly removing the heat generated by the electrical control box 2 to help the electrical control box 2 dissipate heat.

[0078] The mounting component 1 can be installed inside the air conditioner. In this embodiment, the mounting component 1 is fixed to the fan assembly 4 and located above the heat exchanger 3. In other embodiments, the mounting component 1 can also be configured as part of the air conditioner casing.

[0079] Please refer to Figures 1, 2, 3 and 5. In the embodiments of this application, the housing 22 includes an insulating shell 221 and a fireproof shell 222 covering the outside of the insulating shell 221. A second heat dissipation hole 24 is provided on the fireproof shell 222. A heat dissipation structure is provided on the insulating shell 221. The heat dissipation structure enables the accommodating space 29 and the second heat dissipation hole 24 to communicate. At least a portion of the power device is disposed close to the heat dissipation structure.

[0080] Specifically, to ensure the electrical safety and operational safety of the control box 2, the housing 22 includes an insulating shell 221 and a fireproof shell 222 covering the insulating shell 221. The insulating shell 221 is typically made of insulating materials such as plastic, and the fireproof shell 222 is typically made of fireproof materials such as metal. A second heat dissipation hole 24 is provided on the fireproof shell 222, and a heat dissipation structure is provided on the insulating shell 221. The second heat dissipation hole 24 is connected to the accommodating space 29 through the heat dissipation structure, so that cooling air enters the interior of the control box 2 through the second heat dissipation hole 24 and the heat dissipation structure, thereby dissipating heat from the power devices inside the control box 2.

[0081] At least some of the power devices are positioned close to the heat dissipation structure or the first heat dissipation hole 23, so that when the airflow flows from the heat dissipation structure to the first heat dissipation hole 23, it can pass through as many power devices as possible, thereby directly carrying away the temperature on the surface of the power devices and improving the heat dissipation efficiency of the control box 2. The heat dissipation structure can be configured as a third heat dissipation hole on the insulating shell 221, or it can be configured as a heat dissipation groove penetrating the insulating shell 221.

[0082] Please refer to Figures 2 and 6. In the embodiments of this application, the heat dissipation structure is configured as a heat dissipation groove 25 disposed on the insulating shell 221. The heat dissipation groove 25 has a first opening 253 facing the accommodating space 29 and a second opening 251 facing the fireproof shell 222. The second opening 251 communicates with the second heat dissipation hole 24. Specifically, the heat dissipation structure is configured as a heat dissipation groove 25 disposed on the insulating shell 221. The heat dissipation groove 25 has a first opening 253 facing the accommodating space 29 and a second opening 251 facing the fireproof shell 222. Compared with directly setting a heat dissipation port, this solution can ensure the structural strength of the heat dissipation structure. The second opening 251 communicates with the second heat dissipation hole 24, so that the second heat dissipation hole 24 communicates with the accommodating space 29.

[0083] Please refer to Figures 3 to 6. The arrows in Figures 4 and 6 indicate the direction of airflow within the electrical control box 2. To reduce the possibility of external dust or moisture entering the accommodating space 29, in the embodiments of this application, the second opening 251 and the second heat dissipation hole 24 have different orientations. Specifically, the heat dissipation structure and the second heat dissipation hole 24 have different orientations, meaning that the second heat dissipation hole 24 is not directly connected to the accommodating space 29. The heat dissipation structure is configured as a heat dissipation groove, and the second opening 251 of the heat dissipation groove is connected to the second heat dissipation hole 24 with different orientations. This causes the airflow to flow out of the second heat dissipation component 24 and into the second opening 251 in different directions, thereby changing the communication direction between the second heat dissipation component 24 and the second opening 251. This not only reduces the entry of external dust or moisture and other impurities into the accommodating space 29 through the second heat dissipation hole 24, affecting the electrical safety of the electrical control box 2, but also reduces the possibility that the flame inside the electrical control box 2 may directly burst out of the electrical control box 2 when the power device inside the electrical control box 2 overheats and burns. This helps to control the intensity of the flame and also reduces the damage to the devices outside the electrical control box 2.

[0084] In other embodiments, the first opening 253 and the second heat dissipation hole 24 may have different orientations, so that the airflow exiting the second heat sink 24 and the first opening 253 have different directions. This can also reduce the entry of external dust or moisture and other impurities into the accommodating space 29, and reduce the possibility that the flame inside the control box 2 may directly burst out of the control box 2. In order to achieve the different orientations of the second opening 251 and the second heat dissipation hole 24, the second heat dissipation hole 24 and the heat dissipation structure are respectively disposed on two adjacent sides of the housing 22 at an angle (the insulating shell 221 and the fireproof shell 222 are regarded as a whole).

[0085] In another embodiment of this application, referring to Figures 5 and 6, the second opening 251 and the second heat dissipation hole 24 face the same direction, and the second heat dissipation hole 24 and the second opening 251 are staggered. That is, the second heat dissipation hole 24 and the heat dissipation structure are disposed on the same side wall of the housing 22. By staggering the two, the path from the second heat dissipation hole 24 to the heat dissipation structure is extended, thereby increasing the difficulty for external dust or moisture and other impurities to enter the accommodating space 29. Wherein, the second heat dissipation hole 24 and the heat dissipation structure are staggered, meaning they are disposed at different positions on the housing 22. In this case, preferably, the second heat dissipation hole 24 and the heat dissipation structure do not overlap at all. Of course, in other embodiments, the second heat dissipation hole 24 and the heat dissipation structure partially overlap.

[0086] Furthermore, the partial gap between the insulating shell 221 and the fireproof shell 222 allows the heat dissipation structure to connect with the second heat dissipation hole 24. That is, the insulating shell 221 and the fireproof shell 222 do not abut against each other at the position between the heat dissipation structure and the second heat dissipation hole 24, thus forming a connecting channel between them. This facilitates external airflow entering the second heat dissipation hole 24 and then entering the heat dissipation structure through this connecting channel, subsequently flowing into the accommodating space. Specifically, the fireproof shell 222 can be made to bulge outwards at the position between the heat dissipation structure and the second heat dissipation hole 24 to create a partial gap; alternatively, the insulating shell 221 can be made to be recessed inwards at the position between the heat dissipation structure and the second heat dissipation hole 24 to create a partial gap.

[0087] In the embodiments of this application, a recessed clearance platform 252 is provided in a portion of the insulating shell 221, which extends into the interior of the electrical control box 2, and the clearance platform 252 extends from the heat dissipation structure to the second heat dissipation hole 24. That is, by using the form of a partial inward recess of the insulating shell 221, a partial gap is set between the two, which helps to improve the stability of the surface of the electrical control box 2.

[0088] Furthermore, to further reduce the possibility of external dust or moisture entering the accommodating space 29, the area of ​​each second heat dissipation hole 24 is smaller than the area of ​​each second opening 251. A larger area of ​​the second opening 251 helps increase the airflow into the accommodating space 29, making it easier for airflow to enter the accommodating space 29 through the second heat dissipation hole 24. Conversely, a smaller area of ​​the second heat dissipation hole 24 makes it more difficult for external dust or moisture to enter. In other words, the area of ​​each second heat dissipation hole 24 is designed to be smaller than the area of ​​each second opening 251, thereby enabling the second heat dissipation hole 24 to filter the airflow entering the second opening 251, thus reducing the possibility of external dust or moisture entering the accommodating space 29. To ensure sufficient airflow, the total area of ​​the multiple second heat dissipation holes 24 is greater than or equal to the total area of ​​the heat dissipation structure. Moreover, since the area of ​​the second heat dissipation hole 24 is smaller than the area of ​​the second opening 251, in the event of overheating and combustion in the electrical control box 2, the second heat dissipation hole 24 can further disperse the flame and reduce its intensity.

[0089] In the embodiments of this application, please refer to Figures 1 to 8. A heat sink is provided in the first heat dissipation channel 21, and the first heat dissipation hole 23 is arranged facing the heat sink, thereby accelerating the air flow and heat dissipation area on the surface of the electronic control box 2, and quickly removing the heat generated by the electronic control box 2 to help the electronic control box 2 dissipate heat.

[0090] Furthermore, the radiator is configured with multiple spaced-apart heat dissipation fins 211, which extend along the extension direction of the first heat dissipation channel 21. The first heat dissipation holes 23 face the sides of the multiple heat dissipation fins 211. Specifically, the heat dissipation fins 211 have good thermal conductivity, thereby quickly dissipating heat from the surface of the control box 2. The multiple heat dissipation fins 211 are spaced apart within the first heat dissipation channel 21, forming small heat dissipation channels between adjacent heat dissipation fins 211, thereby increasing the heat dissipation area of ​​the radiator and further removing heat from the surface of the heat dissipation fins 211, thus improving the heat dissipation effect of the control box 2.

[0091] Furthermore, the heat dissipation fins 211 extend along the extension direction of the first heat dissipation channel 21, that is, the heat dissipation fins 211 extend from the air inlet end 212 to the air outlet end 213. The small heat dissipation channel formed by multiple heat dissipation fins 211 extends from the air inlet end 212 to the air outlet end 213, thereby reducing the possibility of airflow obstruction within the first heat dissipation channel 21, effectively ensuring airflow within the first heat dissipation channel 21, and thus improving the heat dissipation efficiency of the heat dissipation fin surface, thereby improving the heat dissipation effect of the electrical control box 2. The surface of the heat dissipation fins 211 is configured as a wavy surface, further increasing the effective heat dissipation area of ​​the heat dissipation fins 211 and improving the heat dissipation effect of the electrical control box 2. The first heat dissipation hole 23 faces the side of the multiple heat dissipation fins 211, that is, the first heat dissipation hole 23 faces the arrangement direction of the multiple heat dissipation fins 211, that is, the first heat dissipation hole 23 faces the largest area of ​​its nearest heat dissipation fin 211. When the electrical control box 2 overheats and burns, the heat dissipation fin 211 can further block the spread of flames, thereby further improving the safety of the air conditioner.

[0092] Please refer to Figures 1, 3, and 7. In the embodiments of this application, a guide shroud 26 is provided on the outer periphery of the first heat dissipation hole 23, and the guide shroud 26 abuts against the heat dissipation fins 211. Specifically, the guide shroud 26 can further guide the airflow from the first heat dissipation hole 23 to the heat dissipation fins 211, thereby facilitating the control of the airflow direction. On the other hand, the guide shroud 26 also has a certain blocking effect, thereby preventing the gas in the first heat dissipation channel 21 from flowing back into the first heat dissipation hole 23, which could cause airflow turbulence. In addition, the guide shroud 26 abuts against the heat dissipation fins 211, which helps to form a relatively closed channel together with the heat dissipation fins 211, further controlling the flame spread of the electrical control box 2 and reducing the possibility of flame leakage through the gap between the guide shroud 26 and the heat dissipation fins 211.

[0093] To facilitate the processing of the housing 22, the housing 22 includes an insulating shell 221 and a fireproof shell 222 covering the outside of the insulating shell 221. The air guide 26 is integrally formed on the insulating shell 221, and the fireproof shell 222 is provided with a clearance opening 223 for the air guide 26 to extend. Specifically, since the insulating shell 221 is generally made of plastic, it can be integrally injection molded with the air guide 26, thereby facilitating the processing and assembly of the housing 22. The fireproof shell 222 is provided with a clearance opening 223 to facilitate the extension of the air guide 26 out of the fireproof shell 222. Compared to the air guide 26 being located on the fireproof shell 222, this method not only facilitates the processing of the housing 22 but also reduces the possibility of airflow entering between the fireproof shell 222 and the insulating shell 221. In other embodiments, the air guide 26 can also be located on the fireproof shell 222, and the air guide 26 can be integrally stamped with the fireproof shell 222. In other embodiments, the air guide shroud 26 may also be formed separately from the insulating shell 221, such as by snap-fitting or adhesive bonding.

[0094] In the embodiments of this application, the power device includes a circuit board 291 located between the first heat dissipation hole and the second heat dissipation hole, and a first power device near the first heat dissipation channel 21. A second power device is disposed on the circuit board 291 near the first heat dissipation hole 23. Specifically, the circuit board 291 is disposed between the first heat dissipation hole 23 and the second heat dissipation hole 24, that is, the circuit board 291 is disposed on the heat dissipation path inside the control box 2, and the second power device is disposed on the circuit board 291 near the first heat dissipation hole 23. This proximity to the first heat dissipation hole 23 allows for heat dissipation through both the heat sink in the first heat dissipation channel 21 and the first heat dissipation hole 23, thereby quickly dissipating heat from the large capacitor. The first power device is disposed inside the control box 2 near the first heat dissipation channel 21, effectively dissipating heat from the control box 2 and reducing the possibility of overheating and combustion in the control box 2.

[0095] Among them, the first power device and the second power device are both power devices with large power consumption in the electrical control box 2, such as frequency converter module, rectifier bridge, large reactor, filter, large DC filter capacitor, etc.

[0096] Please refer to Figures 1, 2, 9, and 10. In the embodiments of this application, a first clearance step 27 is formed on the side of the housing 22 facing the mounting member 1. The mounting member 1 includes a support plate 11 and a mounting plate 12 arranged at an angle. The housing 22 is mounted on the support plate 11. The first clearance step 27, the mounting plate 12, and part of the support plate 11 enclose and form a first heat dissipation channel 21. Specifically, the support plate 11 and the mounting plate 12 are arranged at an angle. The support plate 11 is usually placed horizontally above the heat exchanger 3. The mounting plate 12 is located at one end of the support plate 11, and the mounting plate 12 is spaced apart from the electrical control box 2. This allows the outer wall of the electrical control box 2, the mounting plate 12, and part of the support plate 11 to enclose and form the first heat dissipation channel 21, so that the radiator is placed inside the first heat dissipation channel 21, thereby dissipating heat from the side wall of the electrical control box 2 facing the mounting plate 12. The air outlet 213 of the first heat dissipation channel 21 can be directly configured as an air outlet on the support plate 11, so that the air outlet is set towards the air inlet side 41 of the fan assembly 4, thereby reducing the flow path from the first heat dissipation channel 21 to the air inlet side 41 of the fan assembly 4 and facilitating the formation of the first air inlet channel. The air inlet 212 of the first heat dissipation channel 21 can be configured as multiple air inlets. Multiple air inlets are respectively set on the support plate 11, the mounting plate 12, and the electrical control box 2. The mounting plate 12 and the support plate 11 surround and form an air inlet. That is, air inlets are set on both the side wall and the bottom wall of the heat dissipation cavity, which not only increases the number of air inlets, but also increases the air inlet path, thereby ensuring the airflow through the first heat dissipation channel 21.

[0097] Furthermore, the support plate 11 is provided with a support rib 13, which abuts against the electrical control box 2 and spaced apart from the support plate 11. The housing 22 is provided with a second clearance step 28 on the side facing the support plate 11, and a second heat dissipation hole 24 is provided on the second clearance step 28.

[0098] Specifically, to further enhance the heat dissipation effect of the electrical control box 2, the support plate 11 is provided with support ribs 13, and multiple support ribs 13 extend along the extension direction of the first heat dissipation channel 21. The multiple support ribs 13, the support plate 11, and the electrical control box 2 together form a second heat dissipation channel. The air inlet 212 of the second heat dissipation channel is connected to the main air inlet, and the air outlet 213 is connected to the air outlet 213 of the first heat dissipation channel 21. This increases the airflow velocity of the electrical control box 2 toward the side wall surface of the support plate 11, thereby further increasing the heat dissipation area of ​​the electrical control box 2 and increasing the heat dissipation efficiency of the electrical control box 2.

[0099] Furthermore, a second clearance step 28 is provided on the side of the housing 22 facing the support plate 11, and a second heat dissipation hole 24 is provided on the second clearance step 28. This allows part of the airflow entering the second heat dissipation channel from the air inlet of the air conditioner to flow along the second heat dissipation channel to the air outlet 213 of the first heat dissipation channel 21, and the other part to enter the accommodating space 29, thereby improving the heat dissipation effect of the control box 2. The second heat dissipation step can further increase the heat dissipation area on the side of the housing 22 facing the support plate 11, thereby improving the heat dissipation efficiency of the control box 2. The first clearance step 27 and the second clearance step 28 can both be formed using the remaining internal space of the control box 2, thereby increasing the heat dissipation area of ​​the control box 2 without increasing the overall volume of the control box 2.

[0100] Please refer to Figures 11 to 15. In one embodiment of this application, the electronic control box 2 includes:

[0101] Casing 22;

[0102] Circuit board 291, disposed within housing 22; and

[0103] The wiring bracket 7 is located inside the housing 22 and is spaced apart from the circuit board 291 to form a first wiring space 31, which is used for arranging the conductive wire bundle 8 in the power control box 2.

[0104] Specifically, the housing 22 has a accommodating space 61 for accommodating the circuit board 291, conductive wire harnesses 8, and some power devices. Furthermore, the control box 2 often contains multiple conductive wire harnesses 8, which are used for different power devices within the control box 2 to control the air conditioner and achieve its various functions. Therefore, the accommodating space 61 typically contains many conductive wire harnesses 8, resulting in a somewhat chaotic wiring layout inside the control box 2. This not only affects the operating efficiency of the air conditioner but may also pose safety hazards, making maintenance of the control box 2 difficult and hindering its heat dissipation.

[0105] Therefore, in this solution, a circuit board 291 is provided to reduce the number of conductive wire bundles 8 inside the electrical control box 2, and a wiring bracket 7 is provided to form a first wiring space 31 for arranging the conductive wire bundles 8, thereby standardizing the arrangement of the conductive wire bundles 8 inside the electrical control box 2 and reducing wire clutter. Furthermore, the wiring bracket 7 is spaced apart from the circuit board 291, thus creating a gap between the first wiring space 31 and the circuit board 291, improving electrical safety within the electrical control box 2.

[0106] The first wiring space 31 can be formed solely by the wiring bracket 7, in which case the wiring bracket 7 has a channel for placing the conductive wire bundle 8. Alternatively, the first wiring space 31 can be formed by the wiring bracket 7 and the inner wall of the housing 22 together. The electrical control box 2 can have only one wiring bracket 7 to arrange a portion of the conductive wire bundle 8 within the first wiring space 31, or multiple wiring brackets 7 can be installed to form multiple first wiring spaces 31, allowing the conductive wire bundle 8 to be independently arranged, further improving electrical safety within the electrical control box 2.

[0107] The technical solution of this application reduces the number of conductive wire bundles 8 inside the electrical control box 2 by setting a circuit board 291 and a wiring bracket 7 inside the housing 22, and forms a first wiring space 31 for arranging the conductive wire bundles 8, thereby standardizing the arrangement of the conductive wire bundles 8 inside the electrical control box 2 and reducing wire tangling. Furthermore, the wiring bracket 7 is spaced apart from the circuit board 291, thereby separating the first wiring space 31 from the circuit board 291 and improving electrical safety inside the electrical control box 2.

[0108] In the embodiments of this application, the first wiring space 31 is configured as a first wiring groove 311 on the wiring bracket 7, and the first wiring groove 311 is provided with at least one first wire-clamping structure 32, which is used to limit the conductive wire bundle 8. Specifically, the wiring bracket 7 is provided with a first wiring groove 311, thereby limiting the extension direction and arrangement of the conductive wire bundle 8, thereby limiting the conductive wire bundle 8. The first wiring groove 311 defines the first wiring space 31 for the conductive wire bundle 8, and in order to reduce the possibility of the conductive wire bundle 8 detaching from the first wiring groove 311, at least one first wire-clamping structure 32 is provided in the first wiring groove 311, which is used to prevent the conductive wire bundle 8 from detaching from the first wiring groove 311. The plurality of first wire-clamping structures 32 are provided at least near the end of the first wiring groove 311.

[0109] The cable routing bracket 7 may have only one first cable routing groove 311 or multiple first cable routing grooves 311. When multiple first cable routing grooves 311 are formed on the cable routing bracket 7, multiple conductive wire bundles 8 are located in different first cable routing grooves 311, so that the conductive wire bundles 8 are set independently, further improving the electrical safety in the electrical control box 2. In other embodiments, the cable routing bracket 7 may not have first cable routing grooves 311, but only multiple spaced first wire clamping structures 32, which together limit the direction of the conductive wire bundles 8.

[0110] Referring to Figures 11 and 12, in the embodiments of this application, the first wire-locking structure 32 includes two spaced-apart first limiting members 321 that extend towards each other to prevent the conductive wire harness 8 from coming out. Specifically, the two first limiting members 321 are disposed on opposite sides of the first wiring groove 311 and extend towards each other, thereby partially reducing the opening size of the first wiring groove 311 and preventing the conductive wire harness 8 from coming out. Furthermore, to facilitate the installation of the conductive wire harness 8, after extending towards each other, the two first limiting members 321 extend backwards again, thereby increasing the opening distance between the two conductive wire harnesses 8 and facilitating their installation.

[0111] In another embodiment of this application, the first wire-locking structure 32 includes a second limiting member 322. One end of the second limiting member 322 is connected to one side of the first wiring groove 311, and the other end extends to the other side of the first wiring groove 311 and is spaced apart from the other side of the first wiring groove 311. Specifically, one end of the second limiting member 322 is connected to one side of the first wiring groove 311, and the other end extends to the other side of the first wiring groove 311, and the other end of the second limiting member 322 is spaced apart from the other side of the first wiring groove 311, thereby changing the partial opening direction of the first wiring groove 311, so that the second limiting member 322 can prevent the conductive wire bundle 8 from coming out. To further reduce the possibility of the conductive wire harness 8 detaching from the first wiring groove 311, the distance between the other end of the second limiting member 322 and the other side of the first wiring groove 311 is smaller than the width of the first wiring groove 311. In order to facilitate the installation of the conductive wire harness 8, the other end of the second limiting member 322 extends to the other side of the first wiring groove 311 and then extends again to the other side away from the first wiring groove 311, thereby facilitating the installation of the conductive wire harness 8.

[0112] Please refer to Figures 13 and 14. In the embodiments of this application, the first wiring trough 311 includes a main trough section 312 and at least one sub-trough section 313 connecting the main trough section 312. Both the main trough section 312 and the sub-trough section 313 are provided with at least one first wire-clamping structure 32. Specifically, when multiple conductive wire bundles 8 have similar functions, and / or are connected to similar power devices, and / or have equal voltages, the multiple conductive wire bundles 8 can first pass through the main trough section 312 together, and then pass through the multiple sub-trough sections 313 respectively. This facilitates the installation of the conductive wire bundles 8 and reduces the overall size of the wiring bracket 7, contributing to the miniaturization of the electrical control box 2. Both the main trough section 312 and the sub-trough section 313 are provided with at least one first wire-clamping structure 32, thereby controlling the routing of the conductive wire bundles 8 in the first wiring trough 311 through the first wire-clamping structure 32.

[0113] To better accommodate the conductive wire harness 8, in this embodiment, the first wiring groove 311 is bent, and its corners are chamfered. Since the conductive wire harness 8 is generally a flexible harness, there are no bends during its bending process. Therefore, the chamfered corners of the first wiring groove 311 make it fit the conductive wire harness 8 more closely. Furthermore, the bent design of the first wiring groove 311 allows for the installation of as many conductive wire harnesses 8 as possible within a limited space.

[0114] To further improve electrical safety within the electrical control box 2, in this embodiment, as shown in Figure 15, the wiring bracket 7 is spaced apart from the housing 22, and the distance between the wiring bracket 7 and the housing 22 is greater than or equal to 5mm. According to the safety distance regulations for the electrical control box 2, the distance between the conductive wire harness 8 and the outer housing 22 must be greater than or equal to 5mm. Therefore, by setting the distance between the wiring bracket 7 and the housing 22 to be greater than or equal to 5mm, the distance between the conductive wire harness 8 and the outer housing 22 is also greater than or equal to 5mm, thereby further improving the electrical safety of the electrical control box 2. Specifically, the distance between the wiring bracket 7 and the housing 22 can be 5mm, 6mm, 7mm, etc.

[0115] Please refer to Figures 11 to 14. In the embodiments of this application, the conductive wire harness 8 includes a high-voltage wire harness 81 and a low-voltage wire harness 42. The housing 22 also contains a second wiring space 62. The high-voltage wire harness 81 is arranged in the first wiring space 31, and the low-voltage wire harness 42 is arranged in the second wiring space 62. Specifically, the conductive wire harness 8 is roughly divided into a high-voltage wire harness 81 and a low-voltage wire harness 42. The high-voltage wire harness 81 is mainly used for electrical connections of high-voltage components, which generally include drive motors, power supply systems, and control of high-power loads. The low-voltage wire harness 42 is mainly used for electrical connections and signal transmission of low-voltage components, which generally include control circuits, safety protection systems, and user interfaces. The voltage difference between the high-voltage wire harness 81 and the low-voltage wire harness 42 is significant. Therefore, a second wiring space 62, separated from the first wiring space 31, is provided. The high-voltage wire harness 81 is arranged in the first wiring space 31, and the low-voltage wire harness 42 is arranged in the second wiring space 62, which helps to achieve separation of high and low voltage, thereby further improving the electrical safety of the distribution box.

[0116] Furthermore, a gap is provided between the circuit board 291 and the inner wall of the housing 22 to form a second wiring space 62. Specifically, the second wiring space 62 is formed by utilizing the gap between the circuit board 291 and the inner wall of the housing 22, and the circuit board 291 and the housing 22 together serve as the groove wall of the second wiring groove, thus eliminating the need for an additional wiring bracket 7 and contributing to the miniaturization of the electrical control box 2. Of course, in other embodiments, another wiring bracket may be provided, on which a second wiring space 62 is formed that is spaced apart from the first wiring space 31, or the wiring bracket may have a first wiring space 31 and a second wiring space 62 spaced apart from each other.

[0117] To further reduce the possibility of the low-voltage cable harness 42 detaching from the second wiring space 62, in an embodiment of this application, a second cable clamping structure 121 is provided within the second wiring space 62. This second cable clamping structure 121 is used to prevent the low-voltage cable harness 42 from detaching from the first wiring space 31. Multiple second cable clamping structures 121 are disposed at least at the ends of the first wiring space 31.

[0118] Referring to Figures 11 and 12, in the embodiments of this application, the second wire-locking structure 121 includes two spaced-apart third limiting members 122, which extend towards each other to prevent the low-voltage wire harness 42 from detaching. Specifically, two first limiting members 321 are disposed on opposite sides of the first wiring groove 311, and extend towards each other, thereby partially reducing the opening size of the first wiring groove 311, thus preventing the conductive wire harness 8 from detaching. Furthermore, to facilitate the installation of the conductive wire harness 8, after the two first limiting members 321 extend towards each other, they extend backwards again, thereby increasing the opening distance between the two conductive wire harnesses 8, thus facilitating the installation of the conductive wire harness 8.

[0119] In another embodiment of this application, the second wire-locking structure 121 includes a fourth limiting member. One end of the fourth limiting member is connected to one side of the second wiring space 62, and the other end extends to the other side of the second wiring space 62 and is spaced apart from the other side of the second wiring space 62.

[0120] To facilitate the installation of the cable tray bracket 7, in the embodiments of this application, the cable tray bracket 7 includes a main body 33 and a mounting part 34. The main body 33 forms a first cable routing space 31, and the mounting part 34 is snapped into the housing 22. The main body 33 and the circuit board 291 are spaced apart. Specifically, the main body 33 of the cable tray bracket 7 is used to form the first cable routing space 31, that is, a first cable routing groove 311 is provided in the main body 33. The mounting part 34 is configured as a mounting arm, so that by snapping the mounting part 34 into the housing 22, the main body 33 is suspended from the circuit board 291. The mounting part 34 and the circuit board 291 can be mounted on the same side wall of the housing 22, in which case the first mounting part 34 is mounted on the outer edge of the circuit board 291. Alternatively, the mounting part 34 and the circuit board 291 can be separately disposed on two opposite side walls of the housing 22.

[0121] Please refer to Figures 11, 13, 17, and 18. In the embodiments of this application, the housing 22 is provided with a wiring port 63 for the conductive wire harness 8 to pass through, and the wiring port 63 is provided with a wire gathering part 131, which is used to limit the conductive wire harness 8. Specifically, the conductive wire harness 8 passes through the wiring port 63 to exit the control board to connect electrically with the electrical components in the air conditioner. Therefore, there are often multiple wiring ports 63, and in order to further gather the conductive wire harness 8, the wiring port 63 is provided with a wire gathering part 131, which is used to limit the conductive wire harness 8.

[0122] Please refer to Figures 15 and 16. In order to ensure the electrical safety and usage safety of the electrical control box, the housing 22 includes an insulating shell 221 and a fireproof shell 222 covering the periphery of the insulating shell 221. The insulating shell 221 is usually made of insulating materials such as plastic, and the fireproof shell 222 is usually made of fireproof materials such as metal.

[0123] Please refer to Figures 11, 13, 15 to 18. In the embodiments of this application, the housing 22 is also equipped with a grounding component 5. The part of the grounding component 5 that extends out of the housing 22 is connected to the grounding wire 51 to ground the electrical control box 2.

[0124] Furthermore, the housing 22 is provided with an outwardly protruding anti-rotation protrusion 14, which is located on at least one side of the grounding member 5 to limit the grounding wire 51.

[0125] Specifically, a portion of the grounding component 5 extends from inside the distribution box, and the portion of the grounding component extending out of the housing 22 is connected to the grounding wire 51 to ground the electrical control box 2, ensuring the electrical safety of the electrical control box 2. Furthermore, at least one side of the grounding component 5 has an outwardly protruding anti-rotation protrusion 14. This anti-rotation protrusion 14 is installed on the housing 22 and located on at least one side of the grounding component 5. The anti-rotation protrusion 14 abuts against one side of the grounding wire 51, thereby limiting the rotation of the grounding wire 51 and reducing the possibility of the grounding component 5 rotating on its own, causing it to detach from the housing 22, or causing the grounding wire 51 to detach from the grounding component 5, thus ensuring the electrical safety of the electrical control box 2.

[0126] In the embodiments of this application, the housing 22 is provided with a thickened portion 15, and the grounding member 5 and the anti-rotation protrusion 14 are both installed on the thickened portion 15, and the thickness of the thickened portion 15 is greater than the thickness of the periphery of the thickened portion 15. Specifically, the thickness of the housing 22 is generally thin, especially the thickness of the fireproof shell 222, which makes it difficult to ensure the installation stability of the grounding member 5 and the housing 22. If the grounding member 5 and the housing 22 are connected by threads, the thinness of the housing 22 makes it easy for the threads to strip. Therefore, the housing 22 is provided with a thickened portion 15, and the thickness of the thickened portion 15 is greater than the thickness of the periphery of the thickened portion 15, that is, the housing 22 is locally thickened. The grounding member 5 and the anti-rotation protrusion 14 are both installed on the thickened portion 15, which helps to ensure the installation stability of the grounding member 5 and the housing 22.

[0127] Therefore, in one embodiment, the housing 22 includes a fireproof shell 222, the edge of which is provided with a flange that fits against the outer surface of the fireproof shell 222 to form a thickened portion 15, thereby facilitating the processing of the fireproof shell 222.

[0128] Furthermore, a thinning portion 151 is provided in a partial area of ​​the thickened portion 15, and the anti-rotation protrusion 14 is installed on the thinning portion 151. The thickness of the thinning portion 151 is less than the thickness of the rest of the thickened portion 15. Since the anti-rotation protrusion 14 protrudes from the outside of the housing 22, it can be formed by partial stamping of the thickened portion 15 to facilitate its processing. However, since the thickened portion 15 is relatively thick, it is not easy to process. Therefore, a thinning portion 151 is provided in a partial area of ​​the thickened portion 15, and the thickness of the thinning portion 151 is less than the thickness of the rest of the thickened portion 15. This allows for a partial thinning of the thickened portion 15, and the anti-rotation protrusion 14 is installed on the thinning portion 151, thereby facilitating the processing of the anti-rotation protrusion 14.

[0129] In other embodiments, the anti-rotation protrusion 14 can be directly bonded, snap-fitted, or threaded to the housing 22, in which case there is no need to provide an additional thinning portion 151. The thinning portion 151 can be configured as a thinning groove provided in a portion of the thickened portion 15.

[0130] Furthermore, the thickness of the housing 22 is less than or equal to 0.6 mm;

[0131] The thickness of the thickened portion 15 is greater than or equal to 0.6 mm and less than or equal to 1.2 mm;

[0132] The thickness of the thinned portion 151 is greater than or equal to 0.6 mm and less than or equal to 0.8 mm.

[0133] Specifically, if the thickness of the housing 22 is less than 0.6mm, it is not only detrimental to the processing of the housing 22, but also makes it difficult to guarantee the installation strength of the housing 22. Specifically, the thickness of the housing 22 can be 0.6mm, 0.7mm, 0.8mm, etc. The thickness of the thickened portion 15 is greater than the thickness of its periphery; therefore, the thickness of the thickened portion 15 must be greater than or equal to 0.6mm. If the thickness of the thickened portion 15 is greater than 1.2mm, then the thickness of the thickened portion 15 is too large, which is detrimental to the flatness of the surface of the electrical control box 2. Specifically, the thickness of the thickened portion 15 can be 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, etc. If the thickness of the thinned portion 151 is less than 0.6 mm, the thinned portion 151 will be too thin, which is not conducive to the processing of the thinned portion 151 and the structural strength of the thinned portion 151 will be difficult to guarantee; if the thickness of the thinned portion 151 is greater than 0.8 mm, it is not conducive to the processing of the anti-rotation protrusion 14. Specifically, the thickness of the shell 22 can be 0.6 mm, 0.7 mm, 0.8 mm, etc.

[0134] To facilitate the installation of the grounding component 5, the housing 22 has mounting holes. The grounding component 5 is configured as a conductive fastener, which is threaded into the mounting holes. Specifically, the grounding component 5 is threaded into the housing 22, which facilitates the installation of the grounding component 5 and ensures its installation stability. The conductive fastener can be configured as a conductive screw, etc. In other embodiments, the grounding component 5 can also be installed on the housing 22 by interference fit with the mounting holes.

[0135] The above are merely exemplary embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. An air conditioner, wherein, The air conditioner comprises: a mounting member arranged in the air conditioner; and an electric control box arranged in the air conditioner and enclosed with the mounting member to form a first heat dissipation channel, the electric control box comprising a housing and a power device, the housing having an accommodation space formed therein, the power device being arranged in the accommodation space, the housing having a first side facing the first heat dissipation channel, a second side facing a side different from the first side, the first side being provided with a first heat dissipation hole, the second side being provided with a second heat dissipation hole, and the second heat dissipation hole being communicated with the first heat dissipation hole through the accommodation space.

2. The air conditioner of claim 1, wherein, The housing comprises an insulating shell and a fireproof shell covering the outer side of the insulating shell, the second heat dissipation hole being arranged in the fireproof shell, the insulating shell being provided with a heat dissipation structure, the heat dissipation structure being capable of communicating the accommodation space with the second heat dissipation hole, at least part of the power device being arranged close to the heat dissipation structure.

3. The air conditioner of claim 2 wherein, The heat dissipation structure is arranged in the form of a heat dissipation groove of the insulating shell, and the heat dissipation groove has a first opening facing the accommodation space and a second opening facing the fireproof shell, the second opening being communicated with the second heat dissipation hole.

4. The air conditioner as claimed in claim 3, wherein, The heat dissipation structure and the second opening are arranged in different directions, and a local gap is arranged between the insulating shell and the fireproof shell to enable the heat dissipation structure to communicate with the second heat dissipation hole.

5. The air conditioner as claimed in claim 3, wherein, The second heat dissipation hole and the second opening are arranged in the same direction, and the second heat dissipation hole and the second opening are arranged in a staggered manner, and a local gap is arranged between the insulating shell and the fireproof shell to enable the second opening to communicate with the second heat dissipation hole.

6. The air conditioner according to claim 4 or 5, wherein A part of the insulating shell is arranged with a recessed avoidance sunken platform towards the inside of the electric control box, and the avoidance sunken platform extends from the second opening to the second heat dissipation hole.

7. The air conditioner as claimed in claim 1, wherein, A heat sink is arranged in the first heat dissipation channel, and the first heat dissipation hole is arranged towards the heat sink.

8. The air conditioner of claim 7, wherein, The heat sink is arranged in the form of a plurality of heat dissipation fins arranged at intervals, and the heat dissipation fins extend along the extension direction of the first heat dissipation channel, and the first heat dissipation hole is arranged towards the side surface of the plurality of heat dissipation fins.

9. The air conditioner of claim 8, wherein, An air guide cover is arranged around the periphery of the first heat dissipation hole, and the air guide cover abuts against the heat dissipation fins.

10. The air conditioner of claim 9, wherein, The housing comprises an insulating shell and a fireproof shell covering the outer side of the insulating shell, the air guide cover being integrally formed on the insulating shell, and the fireproof shell being provided with a clearance for the air guide cover to extend out.

11. The air conditioner according to claim 6, wherein, The power device comprises a circuit board between the first heat dissipation hole and the second heat dissipation hole, and a first power device close to the first heat dissipation channel, and the circuit board is provided with a second power device close to the first heat dissipation hole.

12. The air conditioner of any one of claims 1 to 11, wherein, A first avoidance step is formed on the side of the housing facing the mounting member, the mounting member comprises a support plate and a mounting plate arranged at an angle, the housing is arranged on the support plate, and the first avoidance step, the mounting plate and part of the support plate enclose the first heat dissipation channel.

13. The air conditioner of claim 12, wherein, The support plate is provided with a support rib abutting against the electric control box and spacing the electric control box from the support plate, and the shell is provided on a side facing the support plate with a second avoiding step, and the second heat dissipation hole is arranged on the second avoiding step.

14. The air conditioner according to claim 1, wherein, The electric control box comprises a wire routing support arranged in the shell and spaced from the circuit board to form a first wire routing space for arranging the electrically conductive wire harness in the electric control box. The power device comprises a circuit board arranged in the shell.

15. The air conditioner of claim 14, wherein, The first wire routing space is configured as a first wire routing groove arranged on the wire routing support, and the first wire routing groove is provided with at least one first wire clamping structure for limiting the electrically conductive wire harness.

16. The air conditioner of claim 15, wherein, The first wire clamping structure comprises two first limiting members arranged in a spaced manner and extending towards each other to block the electrically conductive wire harness from coming out; and / or The first wire clamping structure comprises a second limiting member, one end of which is connected to one side of the first wire routing groove, and the other end extends to the other side of the first wire routing groove and is arranged in a spaced manner from the other side of the first wire routing groove.

17. The air conditioner of claim 15, wherein, The first wire routing groove comprises a main groove segment and at least one sub-groove segment connected to the main groove segment, and at least one first wire clamping structure is arranged in the main groove segment and the sub-groove segment; and / or The first wire routing groove is arranged in a curved manner, and the corners of the first wire routing groove are chamfered.

18. The air conditioner of claim 14, wherein, The electrically conductive wire harness comprises a strong electric wire harness and a weak electric wire harness, and the shell further comprises a second wire routing space, the strong electric wire harness is arranged in the first wire routing space, and the weak electric wire harness is arranged in the second wire routing space.

19. The air conditioner of claim 18, wherein, The circuit board is arranged in a spaced manner from the inner wall of the shell to form the second wire routing space; and / or The second wire routing space is provided with a second wire clamping structure.

20. The air conditioner of claim 14, wherein, The wire routing support comprises a main body portion and a mounting portion, the main body portion forms the first wire routing space, the mounting portion is clamped to the shell, and the main body portion is arranged in a spaced manner from the circuit board.

21. The air conditioner of claim 14, wherein, The wire routing support and the shell are arranged in a spaced manner, and the distance between the wire routing support and the shell is greater than or equal to 5 mm.

22. The air conditioner of claim 14, wherein, The shell is provided with a wire routing opening through which the electrically conductive wire harness passes, and the wire routing opening is provided with a wire gathering portion for limiting the electrically conductive wire harness.

23. The air conditioner of claim 14, wherein, The shell is further provided with a grounding member, and the part of the grounding member passing through the shell is connected to a grounding wire to ground the electric control box. The shell is provided with an outwardly protruding anti-rotation protrusion arranged on at least one side of the grounding member to limit the grounding wire.

24. The air conditioner of claim 23, wherein, The shell is provided with a thickened portion, the grounding member and the anti-rotation protrusion are arranged on the thickened portion, and the thickness of the thickened portion is greater than the thickness of the periphery of the thickened portion.

25. The air conditioner of claim 24, wherein, Part of the thickened portion is provided with a thinned portion, the anti-rotation protrusion is arranged on the thinned portion, and the thickness of the thinned portion is less than the thickness of the remaining part of the thickened portion.

26. The air conditioner of claim 25, wherein, The thickness of the shell is less than or equal to 0.6 mm; The thickness of the thickened portion is greater than or equal to 0.6 mm and less than or equal to 1.2 mm; The thickness of the thinning portion is greater than or equal to 0.6 mm and less than or equal to 0.8 mm.

27. The air conditioner of claim 25, wherein, The shell comprises a fireproof shell, an edge of the fireproof shell is provided with a flange which is attached to an outer surface of the fireproof shell to form the thickening portion; a part of the thickening portion is thinned to form the thinning portion; a part of the thinning portion is provided with an outward protrusion to form the anti-rotation protrusion; and / or, The shell is provided with a mounting hole, and the grounding member is configured as a conductive fastener which is threadedly connected to the mounting hole.

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