Air conditioner outdoor unit

Abstract

The utility model provides an air conditioner outdoor unit, and relates to the technical field of air conditioners. The air conditioner outdoor unit comprises a machine shell and an electric control box arranged in the machine shell, the machine shell comprises a side plate, the electric control box is fixedly installed on the side plate, and the bottom wall, opposite to the side plate, of the electric control box is obliquely arranged in the direction close to the side plate from top to bottom. According to the air conditioner outdoor unit, the electric control box in the machine shell is arranged on the side plate of the machine shell, the bottom wall, opposite to the side plate, of the electric control box is obliquely arranged in the vertical direction, the bottom end of the electric control box is close to the side plate, and the top end of the electric control box is far away from the side plate, so that the top end of the side, far away from the side plate, of the electric control box can fully utilize the space of the top in the machine shell, and the space occupied by the bottom end is small; therefore, more space can be released and is used for accommodating structures such as the compressor and pipelines between the compressor and the heat exchanger, so that the space layout in the shell is more reasonable, the utilization rate of the space in the shell can be improved, the left-right length of the shell can be effectively shortened, the size of the whole machine is reduced, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and in particular to an outdoor unit of an air conditioner. Background Art

[0002] The air conditioner outdoor unit is equipped with a heat exchanger, a fan assembly, a compressor and an electronic control box in the casing. Usually, the heat exchanger and the fan assembly are arranged on one side of the casing, while the compressor and the electronic control box are arranged on the other side of the casing.

[0003] However, in the prior art, the installation and setting of the electric control box is not reasonable, resulting in a relatively large space occupied by the compressor and the electric control box, but a relatively low space utilization rate. Utility Model Content

[0004] The purpose of the utility model is to provide an air-conditioning outdoor unit to solve the technical problem in the prior art that the installation and setting form of the electric control box is not reasonable, resulting in a relatively large space occupied by the side where the compressor and the electric control box are located, but the space utilization rate is relatively low.

[0005] The air-conditioning outdoor unit provided by the utility model includes a casing and an electric control box arranged in the casing, the casing includes a side panel, the electric control box is fixedly installed on the side panel, and along the top-down direction, the bottom wall of the electric control box opposite to the side panel is inclined toward the direction close to the side panel.

[0006] The air conditioner outdoor unit provided by the utility model can produce the following beneficial effects:

[0007] The air-conditioning outdoor unit provided by the present invention has an electric control box in its casing arranged on the side panel of the casing, and the bottom wall of the electric control box relative to the side panel is inclined in the up and down direction, and the bottom end is close to the side panel and the top end is away from the side panel. Therefore, the top end of the electric control box on the side away from the side panel can make full use of the space at the top of the casing, and the space occupied by the bottom end is relatively small, thereby freeing up more space for accommodating structures such as the compressor and the pipelines between the compressor and the heat exchanger, making the space layout in the casing more reasonable, and also improving the utilization rate of the space in the casing, and effectively shortening the left and right lengths of the casing, reducing the volume of the whole machine and saving costs.

[0008] Furthermore, the side panels are provided with an inspection opening. The electrical control box includes a box body, which is fixedly mounted to the side panels, with the opening of the box body facing the inspection opening. The side panels are also provided with an electrical cover, which closes the inspection opening and can be opened. This arrangement provides the electrical cover with waterproofing and other protective features for the electrical control box. Once the cover is opened, the electrical control box can be conveniently inspected through the inspection opening.

[0009] Furthermore, the box body is provided with a PCB board, which is mounted on the bottom wall and tilted from top to bottom toward the side panels. A terminal block is also provided on the PCB board, which is positioned toward the opening of the box body. With this technical solution, the outwardly facing side of the PCB board is tilted upward, making it very convenient for operators to connect wires on the terminal block, such as by screws or clips. Screw-type wiring is more reliable and secure, while clip-on wiring is more time-saving and labor-saving.

[0010] Furthermore, the terminal board is arranged at the bottom end of the PCB board in the up-down direction. In this way, the terminal board is closer to the inspection port, so it is more convenient to operate.

[0011] Furthermore, the side panel is also provided with a first air inlet; the electrical control box is provided with a component cavity and a heat dissipation channel, and the PCB board is provided in the component cavity; the horizontal section of the heat dissipation channel is located above the component cavity, and is separated from the component cavity by the partition wall of the box body, and the air inlet end of the horizontal section is arranged opposite to the first air inlet. Under this technical solution, after the outside air enters the heat dissipation channel from the first air inlet on the side panel, it will take away the heat on the top wall of the component cavity, i.e., the partition wall, thereby dissipating heat and cooling the partition wall and the component cavity. Moreover, since the heat emitted by the electronic components in the component cavity during operation causes the air in the component cavity to become hot, the hot air will rise, so the horizontal section of the heat dissipation channel is arranged above the component cavity, which has a better heat dissipation and cooling effect.

[0012] Furthermore, the heat dissipation channel also includes an oblique straight section connected to the horizontal section. The oblique straight section is located on the side of the element cavity away from the side plate, and the channel wall of the oblique straight section opposite the bottom wall is parallel to the bottom wall. This arrangement also frees up space at the bottom end of the oblique straight section of the heat dissipation channel, effectively avoiding structures such as the compressor or the piping between it and the heat exchanger.

[0013] Furthermore, the PCB is provided with a heat sink, and the bottom wall is provided with a relief opening, through which the heat sink extends and at least partially extends into the oblique straight section. Under this technical solution, external air enters the heat dissipation channel from the air inlet end of the heat dissipation channel through the first air inlet on the side panel, exchanges heat with the heat sink in the heat dissipation channel, and is then discharged from the air outlet end of the heat dissipation channel. The heat exchange between the air in the heat dissipation channel and the heat sink accelerates heat dissipation from the heat sink, thereby improving the heat dissipation efficiency of the heat sink for the PCB and the electronic components thereon.

[0014] Furthermore, the electrical cover is provided with a second air inlet, which communicates with the component cavity; the housing is provided with an air outlet, which communicates with the component cavity and the heat dissipation channel. Under this technical solution, external air enters the component cavity through the second air inlet on the electrical cover and the access port on the side panel, exchanges heat with the PCB and the electronic components therein, and is then discharged through the air outlet of the component cavity. The air in this channel directly exchanges heat with the PCB and the electronic components therein, thereby rapidly reducing the temperature of the PCB and the electronic components therein.

[0015] Furthermore, the air outlet is arranged at the top end of the bottom wall, and / or the air outlet is arranged at the partition wall, and / or the air outlet is arranged at the front wall and / or rear wall of the box body.

[0016] Preferably, the air outlet is disposed at the top of the bottom wall. With this technical solution, if rainwater or the like enters the heat dissipation channel through the first air inlet on the side panel, it is unlikely to enter the component cavity through the air outlet. However, at the same time, the heated and rising air in the component cavity can relatively easily enter the oblique and straight sections of the heat dissipation channel and, after exchanging heat with the radiator, be discharged from the air outlet end of the heat dissipation channel. This improves gas utilization, thereby enhancing heat dissipation efficiency and effectiveness.

[0017] Furthermore, the electrical appliance cover is fixedly mounted on the side panel and forms an air inlet cavity therebetween with the side panel, and the inspection port is connected to the air inlet cavity; the second air inlet is provided on the bottom panel of the electrical appliance cover, and the outside air enters the air inlet cavity from the second air inlet, and then enters the component cavity through the inspection port. Under this technical solution, the outside air enters the air inlet cavity from the second air inlet at the bottom of the electrical appliance cover, enters the component cavity through the inspection port, cools the PCB board in the component cavity and the electrical components thereon, and then enters the heat dissipation channel through the air outlet. The air inlet cavity is enclosed between the electrical appliance cover and the side panel, providing an air inlet channel for the outside air to enter the component cavity, and the second air inlet is provided on the bottom panel of the electrical appliance cover, which can effectively prevent rainwater and other debris from entering the air inlet cavity through the second air inlet.

[0018] Furthermore, the first air inlet is a louver structure or an air inlet grille structure; the outer end of the partition wall is provided with an outer extension edge, and the outer extension edge overlaps the bottom edge of the first air inlet; and / or, the inner end of the partition wall away from the side panel is provided with an inner extension edge extending in a direction away from the side panel.

[0019] In this technical solution, the louver structure can effectively prevent rainwater and other debris from entering the heat dissipation channel; the outer extension edge is overlapped with the bottom edge of the first air inlet, so that rainwater is not easy to enter the component cavity from the horizontal gap between the partition wall and the bottom edge of the first air inlet, thereby effectively preventing water from entering the component cavity; and the setting of the inner extension edge ensures that even if water enters the horizontal section of the heat dissipation channel and flows to the inner end of the partition wall, it will flow down from the inner extension edge to the radiator or the oblique straight section, which can effectively prevent water from flowing downward along the bottom wall and entering the component cavity through the air outlet or the avoidance port.

[0020] The electrical control box further includes a cover, which is mounted on the box body and seals the opening. Along the circumference of the cover, the inspection opening is larger than the cover itself, and the cover can be opened at the inspection opening. With this technical solution, the cover protects the component cavity where the PCB is located from insects and moisture. When maintenance is required, the electrical cover can be opened, then the cover can be opened again to perform wiring or maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the partial structure of an air-conditioning outdoor unit provided by an embodiment of the present utility model;

[0023] Figure 2 A front view of a partial structure of an air-conditioning outdoor unit provided by an embodiment of the present utility model;

[0024] Figure 3 A front sectional view of a partial structure of an air-conditioning outdoor unit provided by an embodiment of the present utility model;

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0026] Description of reference numerals:

[0027] 110-right side panel; 111-inspection port; 112-first air inlet; 120-base;

[0028] 200-electrical control box; 201-element cavity; 202-heat dissipation channel; 203-horizontal section; 204-oblique straight section;

[0029] 210 - front wall; 220 - rear wall; 230 - upper wall; 240 - partition wall; 241 - outer edge; 242 - inner edge; 250 - lower wall; 260 - bottom wall;

[0030] 270-PCB board; 280-terminal board; 290-heat sink;

[0031] 300-electrical cover; 301-air inlet; 310-second air inlet; 320-handle;

[0032] 400-heat exchanger; 450-pipeline; 500-compressor; 600-fan assembly. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] First of all, it should be noted that in the drawings, the directions indicated by the arrows "ab" are left and right directions, the directions indicated by the arrows "cd" are front and rear directions, and the directions indicated by the arrows "ef" are up and down directions.

[0035] This embodiment provides an air conditioner outdoor unit, such as Figure 1 As shown, the air-conditioning outdoor unit includes a casing and an electric control box 200 arranged in the casing. The casing includes a side panel, and the electric control box 200 is fixedly installed on the side panel. From top to bottom, the bottom wall 260 of the electric control box 200 opposite to the side panel is tilted toward the side panel.

[0036] The air-conditioning outdoor unit provided in this embodiment has an electric control box 200 in its casing arranged on the side panel of the casing, and the bottom wall 260 of the electric control box 200 opposite to the side panel is inclined in the up and down direction, with the bottom end close to the side panel and the top end away from the side panel. Therefore, the top end of the electric control box 200 on the side away from the side panel can make full use of the space at the top of the casing, while the space occupied by the bottom end is relatively small, thereby freeing up more space for accommodating structures such as the compressor 500 and the pipeline 450 between it and the heat exchanger 400, making the space layout in the casing more reasonable, and improving the utilization rate of the space in the casing. It can also effectively shorten the left and right lengths of the casing, reduce the volume of the entire machine, and save costs.

[0037] Specifically, in this embodiment, Figures 2 to 4As shown, the side panel has an inspection opening 111. The electrical control box 200 includes a box body, which is fixedly mounted to the side panel, with the opening of the box body facing the inspection opening 111. The side panel also has an electrical cover 300, which closes the inspection opening 111 and can be opened. In this arrangement, the electrical cover 300 provides waterproofing and other protective functions for the electrical control box 200. After opening the electrical cover 300, the electrical control box 200 can be easily inspected through the inspection opening 111, which is very convenient.

[0038] More specifically, in this embodiment, Figure 4 As shown, the box body is equipped with a PCB board 270, which is mounted on the bottom wall 260 and tilted toward the side panels from top to bottom. PCB board 270 is also mounted on a terminal block 280, which is positioned toward the opening of the box body. In this configuration, the outward-facing side of PCB board 270 is tilted upward, making it very convenient for operators to connect wires to terminal block 280, such as by screws or clips. Screw-type wiring is more reliable and secure, while clip-on wiring is more time-saving and labor-saving.

[0039] Furthermore, in this embodiment, if Figure 4 As shown, the terminal board 280 is arranged at the bottom end of the PCB board 270 in the up-down direction. With this arrangement, the terminal board 280 is closer to the inspection port 111, so it is more convenient to operate.

[0040] Specifically, in this embodiment, continue as Figure 4 As shown, the side panel also has a first air inlet 112. The electrical control box 200 is provided with a component cavity 201 and a heat dissipation channel 202, with a PCB 270 disposed within the component cavity 201. The horizontal section 203 of the heat dissipation channel 202 is located above the component cavity 201 and is separated from the component cavity 201 by a partition wall 240 of the box body. The air inlet end of the horizontal section 203 is positioned opposite the first air inlet 112. In this arrangement, outside air enters the heat dissipation channel 202 through the first air inlet 112 on the side panel and removes heat from the top wall of the component cavity 201, i.e., the partition wall 240, thereby dissipating heat and cooling the partition wall 240 and the component cavity 201. Furthermore, since the heat dissipated by the electronic components within the component cavity 201 during operation heats the air within the component cavity 201, causing it to rise. Therefore, positioning the horizontal section 203 of the heat dissipation channel 202 above the component cavity 201 improves heat dissipation and cooling. Of course, in other embodiments of the present application, the horizontal section 203 of the heat dissipation channel 202 may also be disposed in front of or behind the component cavity 201 .

[0041] Specifically, in this embodiment, the heat dissipation channel 202 further includes an oblique straight section 204 connected to the horizontal section 203. The oblique straight section 204 is located on the side of the element cavity 201 away from the side plate, and the channel wall of the oblique straight section 204 opposite the bottom wall 260 is parallel to the bottom wall 260. This arrangement frees up space at the bottom end of the oblique straight section 204 of the heat dissipation channel 202, effectively avoiding structures such as the compressor 500 or the pipeline 450 between it and the heat exchanger 400.

[0042] More specifically, in this embodiment, Figure 1 and Figure 4 As shown, the box body of the electric control box 200 includes a front wall 210 and a rear wall 220 spaced apart and arranged opposite to each other in the front-to-back direction, an upper wall 230, a partition wall 240 and a lower wall 250 arranged in sequence in the upper-lower direction, the front wall 210 is connected to the front ends of the upper wall 230, the partition wall 240 and the lower wall 250, and the rear wall 220 is connected to the rear ends of the three. The side of the front wall 210, the rear wall 220, the partition wall 240 and the lower wall 250 away from the side plate is connected to the bottom wall 260. In this way, the front wall 210, the partition wall 240 and the lower wall 250 are connected to each other. The front wall 240, the rear wall 220, the lower wall 250, and the bottom wall 260 together form the component cavity 201; the top of the front wall 210, the upper wall 230, the top of the rear wall 220, and the partition wall 240 together form the horizontal section 203 of the heat dissipation channel 202; the end of the upper wall 230 away from the side plate first extends in a direction away from the bottom wall 260 to form an extended section, and then the three sides of the extended section not connected to the upper wall 230 all extend downward, and then together with the bottom wall 260 form the oblique straight section 204 of the heat dissipation channel 202.

[0043] Specifically, in this embodiment, Figure 4 As shown, the PCB 270 is provided with a heat sink 290, and the bottom wall 260 is provided with a relief opening. The heat sink 290 extends through the relief opening and at least partially extends into the oblique straight section 204. In this arrangement, external air enters the heat sink 202 from the air inlet end of the heat sink 202 through the first air inlet 112 on the side panel, exchanges heat with the heat sink 290 in the heat sink 202, and is then discharged from the air outlet end of the heat sink 202. The heat exchange between the air in the heat sink 202 and the heat sink 290 accelerates the heat dissipation of the heat sink 290, thereby improving the heat dissipation efficiency of the heat sink 290 for the PCB 270 and the electronic components thereon.

[0044] Specifically, in this embodiment, Figure 3As shown, the electrical cover 300 is provided with a second air inlet 310, which communicates with the component chamber 201; the box body is provided with an air outlet (not shown), which communicates with the component chamber 201 and the heat dissipation channel 202. In this arrangement, external air enters the component chamber 201 through the second air inlet 310 on the electrical cover 300 and the inspection port 111 on the side panel, exchanges heat with the PCB board 270 and the electronic components thereon, and is then discharged through the air outlet of the component chamber 201. The air in this channel directly exchanges heat with the PCB board 270 and the electronic components thereon within the component chamber 201, thereby quickly reducing the temperature of the PCB board 270 and the electronic components thereon.

[0045] Specifically, in this embodiment, the air outlet is disposed at the top of the bottom wall 260. With this arrangement, if rainwater or the like enters the heat dissipation channel 202 through the first air inlet 112 on the side panel, it is unlikely to enter the component cavity 201 through the air outlet. However, at the same time, the heated and rising air in the component cavity 201 can relatively easily enter the oblique straight section 204 of the heat dissipation channel 202 and, after exchanging heat with the radiator 290, be discharged from the air outlet end of the heat dissipation channel 202. This improves the utilization rate of the gas, thereby facilitating improved heat dissipation efficiency and enhancing the heat dissipation effect.

[0046] It should be noted here that in other embodiments of the present application, the air outlet is not limited to being set at the top of the bottom wall 260, but can also be set at positions such as the partition wall 240, the front wall 210 or the rear wall 220 of the box body. Moreover, the air outlet is not limited to being set at one position, and the air outlet can be set at multiple positions, for example: the bottom wall 260 is provided with a first air outlet, the partition wall 240 is provided with a second air outlet, the front wall 210 is provided with a third air outlet, and so on.

[0047] Specifically, in this embodiment, Figure 3 and Figure 4As shown, the electrical cover 300 is fixed to the side panel and encloses an air inlet cavity 301 therebetween. The inspection port 111 is connected to the air inlet cavity 301. A second air inlet 310 is provided on the bottom panel of the electrical cover 300. External air enters the air inlet cavity 301 through the second air inlet 310 and then enters the component cavity 201 through the inspection port 111. In this arrangement, external air enters the air inlet cavity 301 through the second air inlet 310 at the bottom of the electrical cover 300, passes through the inspection port 111, and then enters the component cavity 201. After cooling the PCB board 270 and the electrical components thereon within the component cavity 201, the air enters the heat dissipation channel 202 through the air outlet. An air inlet cavity 301 is enclosed between the electrical cover 300 and the side panel, providing an air inlet channel for external gas to enter the component cavity 201, and the second air inlet 310 is opened on the bottom plate of the electrical cover 300, which can effectively prevent rainwater and other debris from entering the air inlet cavity 301 through the second air inlet 310.

[0048] Specifically, in this embodiment, the first air inlet 112 is a louver structure or an air inlet grille structure, wherein the louver structure can effectively prevent rainwater and other debris from entering the heat dissipation channel 202 .

[0049] More specifically, in this embodiment, Figure 4 As shown, the outer end of the partition wall 240 is provided with an outer extension 241, which overlaps the bottom edge of the first air inlet 112. This arrangement prevents rainwater from entering the element cavity 201 through the horizontal gap between the partition wall 240 and the bottom edge of the first air inlet 112, thereby effectively preventing water from entering the element cavity 201.

[0050] More specifically, in this embodiment, Figure 4 As shown, the thickness of the outer edge 241 is less than that of the partition wall 240. The lower surface of the outer edge 241 forms a stepped groove with the outer end surface of the partition wall 240. The outer end of the partition wall 240 overlaps and is locked to the bottom of the first air inlet 112. This arrangement not only provides waterproofing but also limits the position of the electric control box 200, thereby improving assembly accuracy and efficiency.

[0051] In this embodiment, continue as Figure 4 As shown, the inner end of the partition wall 240, away from the side panels, is further provided with an inner extension 242, which extends away from the side panels. With this arrangement, even if water enters the horizontal section 203 of the heat dissipation channel 202 and flows to the inner end of the partition wall 240, it will flow down the inner extension 242 onto the radiator 290 or into the oblique straight section 204, effectively preventing the water from flowing down the bottom wall 260 and entering the component chamber 201 through the air outlet or the escape port.

[0052] Specifically, in this embodiment, the electrical control box 200 may also include a cover, which is mounted on the box body and seals the opening. Along the circumference of the cover, the inspection opening 111 is larger than the cover itself, and the cover can be opened at the inspection opening 111. This arrangement protects the component cavity 201 where the PCB 270 is located from insects and moisture. When maintenance is required, the electrical cover 300 is opened, and then the cover is opened again to perform wiring or maintenance operations.

[0053] Specifically, in this embodiment, Figure 1 As shown, the electrical appliance cover 300 is provided with a handle 320. Under this arrangement, the entire air conditioner outdoor unit can be easily lifted and moved by the handle 320.

[0054] Specifically, in this embodiment, the interior of the casing is an integrated cavity, that is, the air-conditioning outdoor unit provided in this embodiment cancels the setting of the wind-proof vertical plate, and the space inside the casing is not divided into two chambers. This not only reduces costs and simplifies the assembly process, but also helps to make more full use of the space inside the outdoor unit and reduce the overall size of the outdoor unit.

[0055] Because of this, the electrical control box 200 can no longer be placed on the windproof vertical plate. Therefore, in this embodiment, it is placed on the side panel of the casing. Furthermore, in this embodiment, the electrical control box 200 is placed on the right side panel 110 of the casing and is fixedly connected to the inner wall of the right side panel 110. The inspection port 111 and the first air inlet 112 are both provided on the right side panel 110. In addition, the heat exchanger 400 and the fan assembly 600 of the air conditioner outdoor unit are located on the left side of the integrated cavity, while the compressor 500 of the air conditioner outdoor unit is located on the right side of the integrated cavity together with the electrical control box 200. The heat exchanger 400, the fan assembly 600, and the compressor 500 are placed on the base 120 of the casing directly or through a bracket.

[0056] However, it should be noted that in other embodiments of the present application, the electrical control box 200 may also be located on the left side panel of the housing, with the electrical control box 200 fixedly connected to the inner wall of the left side panel; the inspection port 111 and the first air inlet 112 are both located on the left side panel. Furthermore, the heat exchanger 400 and fan assembly 600 of the air conditioner outdoor unit are located on the right side of the integrated cavity, while the compressor 500 of the air conditioner outdoor unit and the electrical control box 200 are both located on the left side of the integrated cavity.

[0057] Here, it should also be noted that, in other embodiments of the present application, a wind-blocking vertical plate may also be provided inside the casing, while the electrical control box 200 is still provided on the side panel of the casing.

[0058] Finally, it should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air conditioner outdoor unit, characterized in that: The invention comprises a housing and an electric control box (200) arranged in the housing, wherein the housing comprises a side panel, the electric control box (200) is fixedly mounted on the side panel, and along a top-down direction, a bottom wall (260) of the electric control box (200) opposite to the side panel is tilted toward the side panel.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The side panel is provided with an inspection opening (111); the electric control box (200) comprises a box body, the box body is fixedly mounted on the side panel, and the opening of the box body is arranged opposite to the inspection opening (111); the side panel is also provided with an electrical appliance cover (300), the electrical appliance cover (300) closes the inspection opening (111) and can be opened; A PCB board (270) is provided in the box body, the PCB board (270) is provided on the bottom wall (260), and along the top-down direction, the PCB board (270) is also tilted toward the direction close to the side panel; the PCB board (270) is provided with a terminal board (280), and the terminal board (280) is provided toward the opening of the box body.

3. The air conditioner outdoor unit according to claim 2, characterized in that: The side panel is further provided with a first air inlet (112); the electric control box (200) is provided with a component cavity (201) and a heat dissipation channel (202), and the PCB board (270) is arranged in the component cavity (201); the horizontal section (203) of the heat dissipation channel (202) is located above the component cavity (201) and is separated from the component cavity (201) by a partition wall (240) of the box body, and the air inlet end of the horizontal section (203) is arranged opposite to the first air inlet (112).

4. The air conditioner outdoor unit according to claim 3, characterized in that: The heat dissipation channel (202) further comprises an oblique straight section (204) communicating with the horizontal section (203); the oblique straight section (204) is located on a side of the component cavity (201) away from the side plate; and a channel wall of the oblique straight section (204) opposite to the bottom wall (260) is parallel to the bottom wall (260).

5. The air conditioner outdoor unit according to claim 4, characterized in that: The PCB board (270) is provided with a heat sink (290), and the bottom wall (260) is provided with a relief opening, through which the heat sink (290) extends and at least partially extends into the oblique straight section (204).

6. The air conditioner outdoor unit according to any one of claims 3 to 5, characterized in that: The electrical appliance cover (300) is provided with a second air inlet (310), which is communicated with the component cavity (201); the box body is provided with an air outlet, which is communicated with the component cavity (201) and the heat dissipation channel (202).

7. The air conditioner outdoor unit according to claim 6, characterized in that: The air outlet is arranged at the top end of the bottom wall (260), and / or the air outlet is arranged at the partition wall (240), and / or the air outlet is arranged at the front wall (210) and / or the rear wall (220) of the box body.

8. The air conditioner outdoor unit according to claim 6, characterized in that: The electrical appliance cover (300) is fixedly mounted on the side panel and encloses an air inlet cavity (301) therebetween with the side panel, and the inspection port (111) is in communication with the air inlet cavity (301); The second air inlet (310) is provided on the bottom plate of the electrical appliance cover (300), and the external air enters the air inlet cavity (301) from the second air inlet (310) and then enters the component cavity (201) through the inspection port (111).

9. The air conditioner outdoor unit according to any one of claims 3 to 5, characterized in that: The first air inlet (112) is a shutter structure or an air inlet grille structure; The outer end of the partition wall (240) is provided with an outer extension edge (241), and the outer extension edge (241) overlaps the bottom edge of the first air inlet (112); and / or, the inner end of the partition wall (240) away from the side panel is provided with an inner extension edge (242) extending in a direction away from the side panel.

10. The air conditioner outdoor unit according to any one of claims 2 to 5, characterized in that: The electric control box (200) further comprises a box cover, which is arranged on the box body and closes the opening; along the circumference of the box cover, the size of the inspection opening (111) is larger than the size of the box cover, and the box cover can be opened at the inspection opening (111).

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