Air conditioner outdoor unit

Abstract

The utility model discloses an air conditioner external unit, which relates to the field of air conditioners, and comprises a shell and a middle partition plate arranged in the shell, the shell comprises a bottom plate, a back plate and two side plates, the middle partition plate divides the space in the shell into a compressor cavity and a main heat dissipation cavity, and an electric control box assembly is arranged on the middle partition plate. The electric control box assembly comprises a circuit board and a radiator installed on the back face of the circuit board, one end of the radiator penetrates through the middle partition plate and extends into the main heat dissipation cavity, the back face of the circuit board is vertically arranged, the back face of the circuit board faces the rear backboard and is obliquely arranged in the direction where the heat dissipation fan is arranged, and the inclination angle alpha is larger than or equal to 15 degrees and smaller than or equal to 45 degrees. Therefore, the radiator is inclined towards the direction of the radiating fan. According to the technical scheme, the radiator of the electric control box assembly can be in good contact with the airflow driven by the cooling fan in the main cooling cavity so as to ensure the heat dissipation performance, the movement space of the cooling fan is not occupied, and heat dissipation and the space utilization rate can be both considered.

Description

Technical Field

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

[0002] In the design of traditional air conditioner outdoor units, the electronic control box assembly is usually installed in the compressor cavity, and there are two main ways to install it with the side-mounted center baffle: right-angle installation and parallel installation. When the electronic control box assembly is installed at a right angle to the side-mounted center baffle, the airflow driven by the cooling fan cannot fully contact the radiator when flowing through the electronic control box assembly due to the obstruction of the right-angle structure, and the heat cannot be dissipated in a timely and effective manner, thereby limiting the heat dissipation efficiency to a certain extent. When the electronic control box assembly is installed parallel to the side-mounted center baffle, although there may be some improvement in heat dissipation, the radiator in the electronic control box assembly will encroach on the main heat dissipation cavity space of the outdoor unit. In order to ensure that the radiator and other components can be installed and operate normally, the overall size of the outdoor unit has to be increased. This not only increases material costs, but also increases the size of the air conditioner outdoor unit, taking up more installation space, causing many inconveniences in installation environments with limited space. It is also not conducive to the compact design of the overall structure of the air conditioner outdoor unit, reducing the market competitiveness of the product.

[0003] In summary, the traditional installation method of the electronic control box assembly is difficult to strike a balance between heat dissipation efficiency and space utilization, and cannot adapt to the requirements of the development of modern air-conditioning technology for efficient heat dissipation, compact structure and low cost. A new design solution is urgently needed to solve these problems. Utility Model Content

[0004] In order to overcome the deficiencies in the prior art, the utility model provides an air-conditioning outdoor unit, wherein the radiator of the electric control box assembly can be in good contact with the airflow driven by the cooling fan in the main cooling chamber to ensure the heat dissipation performance, and does not encroach on the activity space of the cooling fan, thereby being able to take into account both heat dissipation and space utilization.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An air conditioner outdoor unit includes an outer shell and a middle partition installed in the outer shell, the outer shell includes a bottom plate, a top plate, a front panel, a back plate and two side plates, the middle partition divides the space in the outer shell into a compressor chamber and a main heat dissipation chamber, a heat dissipation fan and a condenser are installed in the main heat dissipation chamber, an electric control box assembly is provided in the compressor chamber, the electric control box assembly is installed on the middle partition, the electric control box assembly includes a circuit board and a radiator installed on the back of the circuit board, one end of the radiator passes through the middle partition and extends into the main heat dissipation chamber, the back of the circuit board is vertically arranged, the back of the circuit board faces the back plate, and is inclined in the direction where the heat dissipation fan is provided, and the inclination angle is α, 15°≤α≤45°, so that the radiator is inclined in the direction of the heat dissipation fan.

[0007] In the above technical solution, the tilted arrangement allows the radiator to better engage with the airflow driven by the cooling fan within the main cooling chamber, optimizing heat exchange efficiency. This layout also ensures that the radiator does not encroach on the fan's active space within the main cooling chamber, effectively avoiding a series of problems that could arise from interference between the radiator and the fan. This eliminates the need to increase the size of the main cooling chamber to prevent interference, ensuring heat dissipation performance while maintaining the compactness and rationality of the air conditioner outdoor unit structure. This improves the stability and reliability of the overall design, enhancing heat dissipation while also balancing space utilization and structural optimization.

[0008] Preferably, the radiator includes a plurality of heat dissipating fins arranged at vertical intervals, a heat dissipating gap is formed between two adjacent heat dissipating fins, the heat dissipating fins are arranged horizontally so that the heat dissipating gap is arranged horizontally, and the heat dissipating gap is open at one end facing the heat dissipating fan and at the end away from the heat dissipating fan.

[0009] In the above technical solution, the main flow direction of the airflow in the main heat dissipation cavity is horizontal. The radiator is composed of a number of vertically spaced heat dissipation fins, with a transverse heat dissipation gap formed between adjacent fins. Both ends of the gap are open. The horizontally flowing airflow can smoothly enter from the heat dissipation gap toward the end of the heat dissipation fan, fully exchange heat with the heat dissipation fins, and then flow out from the end facing away from the heat dissipation fan. This structure makes the airflow flow path within the heat dissipation gap more reasonable, maximizes the kinetic energy of the airflow, enhances the heat exchange effect, and effectively improves the heat dissipation efficiency of the radiator, ensuring that the air conditioner outdoor unit can more efficiently dissipate internal heat during operation, maintain a stable operating state, and extend the service life of the equipment.

[0010] Preferably, the condenser is arranged at a position close to the back panel, and the middle partition includes a positive partition arranged parallel to the side panel and an oblique partition arranged obliquely relative to the positive partition. The oblique partition is arranged close to the back panel, and the distance between the oblique partition and the back panel increases from the side away from the cooling fan to the side close to the cooling fan. An auxiliary heat dissipation cavity is formed between the oblique partition and the back panel, and the auxiliary heat dissipation cavity is connected to the main heat dissipation cavity. One side of the condenser extends to the auxiliary heat dissipation cavity.

[0011] In the above technical solution, the condenser is positioned near the rear panel, and one side of the condenser extends to the auxiliary heat dissipation cavity formed by the inclined partition and the rear panel. This effectively increases the heat dissipation area of the condenser, thereby significantly improving its heat dissipation effect. The distance between the inclined partition and the rear panel in the middle partition increases from the side away from the cooling fan to the side close to the cooling fan, which can more efficiently guide the airflow in the main heat dissipation cavity into the auxiliary heat dissipation cavity. When the cooling fan is working, the airflow in the main heat dissipation cavity can flow more smoothly into the auxiliary heat dissipation cavity under the guidance of the inclined partition, thereby enhancing the air circulation of the entire cooling system and further optimizing the heat dissipation performance of the condenser. Moreover, the inclined partition is only tilted near the rear panel. Compared with the overall tilted design, it can minimize the encroachment on the compressor cavity space, ensuring that the compressor cavity has enough space to accommodate related components and maintain the normal operation of the compressor. It also helps to maintain the rationality and stability of the overall structure of the air conditioner outdoor unit, achieving a balance between improved heat dissipation performance and reasonable space utilization.

[0012] Preferably, the radiator is arranged in the auxiliary heat dissipation cavity; or, part of the radiator is arranged in the auxiliary heat dissipation cavity, and the other part is arranged in the main heat dissipation cavity; or, the radiator is arranged at a position of the circuit board close to the main heat dissipation cavity.

[0013] In the first technical solution mentioned above, by placing the radiator in the auxiliary heat dissipation cavity, effective protection of the main heat dissipation cavity space is achieved, and the radiator is prevented from occupying the limited space of the main heat dissipation cavity. In the second technical solution mentioned above, when a part of the radiator is placed in the main heat dissipation cavity, it can directly contact the high-speed airflow driven by the heat dissipation fan in the main heat dissipation cavity, and with the help of the powerful power of the airflow, the external airflow is effectively introduced into the interior of the radiator. The other part of the radiator is placed in the auxiliary heat dissipation cavity, which reduces the radiator's occupation of the limited space of the main heat dissipation cavity. In the third technical solution mentioned above, the heat dissipation effect can be improved by placing the radiator at a position where the circuit board is close to the main heat dissipation cavity.

[0014] Preferably, the angle between the inclined partition and the back plate is β, β>α.

[0015] In the above technical solution, since β>α, the end of the electric control box assembly closest to the back panel is slightly away from the back panel, which reasonably increases the size occupied in the left-right direction, fully utilizing the space in this direction of the compressor cavity. At the same time, it effectively reduces the size occupied by the electric control box assembly in the front-to-back direction within the compressor cavity, fully utilizing the length advantage of the compressor cavity, reducing the thickness requirement, and achieving optimal space utilization. Moreover, this layout cleverly avoids interference between the end of the electric control box assembly and the back panel, ensuring the stability of the internal structure. At the same time, the above design provides a gap between the inclined partition and the electric control box assembly. During the operation of the air conditioner outdoor unit, heat can be transferred and dissipated more smoothly through this gap, effectively improving the heat dissipation efficiency.

[0016] Preferably, the electric control box assembly further comprises a mounting box, the circuit board is fixed to the mounting box, a first connecting portion and a second connecting portion are provided on the mounting box, the first connecting portion is fixed to the positive partition, and the second connecting portion is fixed to the oblique partition.

[0017] In the above technical solution, the first connection of the mounting box is fixed to the main baffle, and the second connection is fixed to the diagonal baffle. This dual-point fixing method allows the mounting box to be precisely positioned inside the air conditioner outdoor unit. Furthermore, because the main baffle and diagonal baffle are arranged at an angle, they form a triangular structure with the mounting box. Based on the principle of triangular stability, this structure is extremely stable and can effectively resist external forces from all directions, ensuring that the mounting box remains stable during air conditioner operation, thereby ensuring the safety and normal operation of the circuit board.

[0018] Preferably, the electric control box assembly has adjacent long sides and short sides, the short sides of the electric control box assembly extend vertically, and the long sides of the electric control box assembly are arranged horizontally.

[0019] In the above technical solution, the long side of the electronic control box assembly is arranged horizontally, so that the length direction of the largest size of the electronic control box assembly can avoid the height direction of the compressor cavity, avoiding the electronic control box assembly from excessively occupying the height space of the compressor cavity, and providing sufficient layout space for other components in the compressor cavity.

[0020] Preferably, electrical components are provided on the front side of the circuit board and face the compressor cavity, and the electrical components are exposed in the compressor cavity.

[0021] The above technical solution eliminates the box cover on the installation box, so that the electrical components are directly exposed in the compressor cavity, thereby improving the heat dissipation efficiency of the entire electric control board.

[0022] Preferably, a heat dissipation window is provided on the middle partition, and the heat dissipation window is arranged obliquely downward toward the opening on one side of the compressor cavity. The electric control box assembly is arranged above the heat dissipation window, and the blades of the heat dissipation fan close to the side of the middle partition move from bottom to top.

[0023] The above technical solution can prevent water droplets driven by the fan blades from entering the compressor cavity. Even if some water droplets enter the compressor cavity, they will not contact the electronic control box assembly, thereby ensuring the waterproof effect of the electronic control box assembly.

[0024] Preferably, a connecting plate is provided inside the shell, the rear side of the connecting plate is fixed to the back plate, the front side of the connecting plate is fixed to the middle partition plate, and one end of the condenser is fixed to the connecting plate.

[0025] In the above technical solution, the connecting plate can fix the end of the middle partition plate to the back plate, and can also fix the end of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 It is a top view of the utility model;

[0028] Figure 3 This is a structural diagram of the middle partition of the utility model;

[0029] Figure 4 It is a structural diagram of the electric control box assembly of the utility model.

[0030] In the figure: casing 1, bottom plate 11, back plate 12, side plate 13, middle partition 2, front partition 21, oblique partition 22, heat dissipation window 23, compressor cavity 3, main heat dissipation cavity 4, heat dissipation fan 5, condenser 6, electric control box assembly 7, radiator 72, heat dissipation fins 721, heat dissipation gap 722, mounting box 73, first connecting part 731, second connecting part 732, long side 74, short side 75, auxiliary heat dissipation cavity 8, connecting plate 9. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1:

[0033] like Figures 1 to 4 As shown, an air conditioner outdoor unit includes a shell 1 and a middle partition 2 installed in the shell 1. The shell 1 includes a bottom plate 11, a top plate, a front panel, a back plate 12 and two side plates 13. The middle partition 2 divides the space in the shell 1 into a compressor chamber 3 and a main heat dissipation chamber 4. A heat dissipation fan 5 and a condenser 6 are installed in the main heat dissipation chamber 4. The heat dissipation fan 5 is located in front of the condenser 6. The front panel and the back plate 12 are both provided with grilles for ventilation. An electric control box assembly 7 is provided in the compressor chamber 3, and the electric control box assembly 7 is installed on the middle partition 2. The electrical control box assembly 7 includes a circuit board and a heat sink 72 mounted on the back of the circuit board. One end of the heat sink 72 extends through the middle partition 2 and into the main heat dissipation cavity 4. The back of the circuit board is vertically arranged, facing the rear panel 12, and is tilted toward the direction where the cooling fan 5 is located. The tilt angle is α, 15°≤α≤45°, so that the heat sink 72 is tilted toward the cooling fan 5. That is, the distance between the back of the circuit board and the rear panel 12 increases from the side away from the cooling fan 5 to the side close to the cooling fan 5. The top plate and front panel are not shown in the figure.

[0034] In the above-mentioned technical solution, the tilted arrangement allows radiator 72 to better contact the airflow driven by cooling fan 5 within main cooling chamber 4, thus optimizing heat exchange efficiency. Furthermore, this layout ensures that radiator 72 does not encroach on the active space of cooling fan 5 within main cooling chamber 4, effectively avoiding a series of problems that could arise from interference between radiator 72 and the fan. This eliminates the need to increase the size of main cooling chamber 4 to prevent interference. This ensures heat dissipation performance while maintaining the compactness and rationality of the air conditioner outdoor unit structure, improving the stability and reliability of the overall design. While enhancing heat dissipation, it also balances space utilization and structural optimization.

[0035] Preferably, the condenser 6 is arranged at a position close to the back panel 12, and the middle partition 2 includes a positive partition 21 arranged parallel to the side panel 13 and an oblique partition 22 arranged obliquely relative to the positive partition 21. The positive partition 21 is arranged away from the back panel 12, and the oblique partition 22 is arranged close to the back panel 12. The distance between the oblique partition 22 and the back panel 12 increases from the side away from the cooling fan 5 to the side close to the cooling fan 5. An auxiliary heat dissipation cavity 8 is formed between the oblique partition 22 and the back panel 12, and the auxiliary heat dissipation cavity 8 is connected to the main heat dissipation cavity 4. One side of the condenser 6 extends to the auxiliary heat dissipation cavity 8, and the positive partition 21 and the oblique partition 22 are an integrally formed structure.

[0036] In the above technical solution, the condenser 6 is positioned near the rear panel 12, with one side extending into the auxiliary heat dissipation chamber 8 formed by the inclined partition 22 and the rear panel 12. This effectively increases the heat dissipation area of the condenser 6, thereby significantly improving its heat dissipation performance. The distance between the inclined partition 22 in the middle partition 2 and the rear panel 12 increases from the side away from the cooling fan 5 to the side closer to the cooling fan 5, effectively directing the airflow within the main heat dissipation chamber 4 into the auxiliary heat dissipation chamber 8. When the cooling fan 5 is operating, the airflow within the main heat dissipation chamber 4, guided by the inclined partition 22, flows more smoothly into the auxiliary heat dissipation chamber 8, enhancing air circulation throughout the cooling system and further optimizing the heat dissipation performance of the condenser 6. Furthermore, the inclined partition 22 is tilted only near the rear panel 12. Compared to a completely tilted design, this minimizes the encroachment on the space of the compressor chamber 3, ensuring sufficient space for related components and maintaining normal compressor operation. This also helps maintain the rationality and stability of the overall structure of the air conditioner outdoor unit, achieving a balance between improved heat dissipation performance and rational space utilization.

[0037] Preferably, the angle between the inclined partition 22 and the rear back plate 12 is β, β>α. The preferred angle α is 23.5°, and the preferred angle β is 30°.

[0038] In the above technical solution, since β>α, the end of the electric control box assembly 7 close to the back plate 12 is slightly away from the back plate 12, which reasonably increases the size occupied in the left and right directions, fully utilizing the space in the compressor cavity 3 in this direction, and effectively reducing the size occupied by the electric control box assembly 7 in the front and back directions in the compressor cavity 3, giving full play to the length advantage of the compressor cavity 3, reducing the demand for thickness dimensions, and achieving optimal utilization of space. Moreover, such a layout cleverly avoids interference between the end of the electric control box assembly 7 and the back plate 12, ensuring the stability of the internal structure. At the same time, the above design provides a gap between the inclined partition 22 and the electric control box assembly 7. During the operation of the air conditioner outdoor unit, heat can be transferred and dissipated more smoothly through the gap, effectively improving the heat dissipation efficiency.

[0039] Preferably, a heat dissipation window 23 is provided on the positive partition 21 in the middle partition 2, and the heat dissipation window 23 is arranged obliquely downward toward the opening on one side of the compressor chamber 3. The electric control box assembly 7 is arranged above the heat dissipation window 23, and the blades of the heat dissipation fan 5 close to one side of the middle partition 2 move from bottom to top.

[0040] The above technical solution can prevent water droplets driven by the fan blades from entering the compressor cavity 3. Even if some water droplets enter the compressor cavity 3, they will not contact the electronic control box assembly 7, thereby ensuring the waterproof effect of the electronic control box assembly 7.

[0041] Preferably, a connecting plate 9 is provided inside the outer shell 1 , the rear side of the connecting plate 9 is fixed to the back plate 12 , the front side of the connecting plate 9 is fixed to the oblique partition 22 in the middle partition 2 , and one end of the condenser 6 is fixed to the connecting plate 9 .

[0042] In the above technical solution, the connecting plate 9 can fix the end of the middle partition plate 2 to the back plate 12 and can also fix the end of the condenser 6.

[0043] Preferably, the electric control box assembly 7 also includes a mounting box 73, the circuit board is fixed to the mounting box 73, and the mounting box 73 is provided with a first connecting portion 731 and a second connecting portion 732, the first connecting portion 731 is fixed to the positive partition 21, and the second connecting portion 732 is fixed to the inclined partition 22.

[0044] In the above technical solution, the first connection portion 731 of the mounting box 73 is fixed to the front partition 21, and the second connection portion 732 is fixed to the diagonal partition 22. This dual-point fixing method allows the mounting box 73 to be precisely positioned within the air conditioner outdoor unit. Furthermore, because the front partition 21 and the diagonal partition 22 are arranged at an angle, they and the mounting box 73 together form a triangular structure. Based on the principle of triangular stability, this structure is extremely stable and can effectively resist external interference from all directions, ensuring that the mounting box 73 remains stable during air conditioner operation, thereby ensuring the safety and normal operation of the circuit board.

[0045] Specifically, the radiator 72 includes a plurality of heat dissipating fins 721 arranged at vertical intervals, and a heat dissipating gap 722 is formed between two adjacent heat dissipating fins 721. The heat dissipating fins 721 are arranged horizontally so that the heat dissipating gap 722 is arranged horizontally. The heat dissipating gap 722 is open at one end toward the heat dissipating fan 5 and at the end away from the heat dissipating fan 5.

[0046] In the above technical solution, the main flow direction of the airflow in the main heat dissipation cavity 4 is horizontal. The radiator 72 is composed of a plurality of heat dissipation fins 721 arranged vertically at intervals. A transverse heat dissipation gap 722 is formed between adjacent fins, and both ends of the gap are open. The horizontally flowing airflow can smoothly enter from the heat dissipation gap 722 toward the opening at one end of the heat dissipation fan 5, fully exchange heat with the heat dissipation fins 721, and then flow out from the opening at the end away from the heat dissipation fan 5. This structure makes the flow path of the airflow in the heat dissipation gap 722 more reasonable, maximizes the kinetic energy of the airflow, enhances the heat exchange effect, and thus effectively improves the heat dissipation efficiency of the radiator 72, ensuring that the air conditioner outdoor unit can dissipate internal heat more efficiently during operation, maintain a stable working state, and extend the service life of the equipment.

[0047] Specifically, the front of the circuit board is provided with electrical components facing the compressor cavity 3, and the electrical components are exposed in the compressor cavity 3. The above technical solution eliminates the cover on the mounting box 73, allowing the electrical components to be directly exposed in the compressor cavity 3, thereby improving the heat dissipation efficiency of the entire electronic control board.

[0048] It will be appreciated that, in one embodiment, the radiator 72 is positioned on the circuit board near the main heat dissipation cavity 4. The radiator 72 is also positioned within the auxiliary heat dissipation cavity 8. In the above technical solution, positioning the radiator 72 near the main heat dissipation cavity 4 improves heat dissipation. By placing the radiator 72 within the auxiliary heat dissipation cavity 8, the main heat dissipation cavity 4 is effectively protected, preventing the radiator 72 from occupying the limited space of the main heat dissipation cavity 4.

[0049] It is understandable that in another embodiment, a portion of the radiator 72 is disposed in the auxiliary heat dissipation cavity 8, and the other portion is disposed in the main heat dissipation cavity 4. In the above technical solution, the radiator 72 is disposed at a position on the circuit board close to the main heat dissipation cavity 4, which can improve the heat dissipation effect. When a portion of the radiator 72 is placed in the main heat dissipation cavity 4, it can directly contact the high-speed airflow driven by the heat dissipation fan 5 in the main heat dissipation cavity 4, and with the help of the powerful power of the airflow, the external airflow is effectively introduced into the interior of the radiator 72. The other portion of the radiator 72 is placed in the auxiliary heat dissipation cavity 8, which reduces the occupancy of the limited space of the main heat dissipation cavity 4 by the radiator 72.

[0050] It will be appreciated that, in one embodiment, the electrical control box assembly 7 has adjacent long sides 74 and short sides 75, with the short sides 75 of the electrical control box assembly 7 extending vertically and the long sides 74 of the electrical control box assembly 7 being arranged horizontally. In the above technical solution, the horizontal arrangement of the long sides 74 of the electrical control box assembly 7 allows the longest length direction of the electrical control box assembly 7 to avoid the height direction of the compressor cavity 3, thereby preventing the electrical control box assembly 7 from excessively encroaching on the height space of the compressor cavity 3 and providing ample space for the arrangement of other components within the compressor cavity 3.

[0051] It can be understood that in another embodiment, the short side 75 of the electric control box assembly 7 is arranged horizontally, and the long side 74 of the electric control box assembly 7 extends vertically.

Claims

1. An air conditioner outdoor unit, comprising a housing and a middle partition mounted in the housing, the housing comprising a bottom plate, a top plate, a front panel, a back plate and two side plates, the middle partition dividing the space in the housing into a compressor chamber and a main heat dissipation chamber, a heat dissipation fan and a condenser being mounted in the main heat dissipation chamber, an electric control box assembly being mounted in the compressor chamber, the electric control box assembly being mounted on the middle partition, the electric control box assembly comprising a circuit board and a radiator mounted on the back of the circuit board, one end of the radiator passing through the middle partition and extending into the main heat dissipation chamber, characterized in that: The back of the circuit board is arranged vertically, facing the back plate, and tilted toward the direction of the cooling fan, with an inclination angle of α, 15°≤α≤45°, so that the radiator is tilted toward the cooling fan.

2. An air conditioner outdoor unit according to claim 1, characterized in that: The radiator includes a plurality of heat dissipation fins arranged at intervals along the vertical direction, a heat dissipation gap is formed between two adjacent heat dissipation fins, the heat dissipation fins are arranged horizontally so that the heat dissipation gap is arranged horizontally, and the heat dissipation gap is open at one end facing the heat dissipation fan and at the other end away from the heat dissipation fan.

3. The air conditioner outdoor unit according to claim 1, characterized in that: The condenser is arranged at a position close to the back panel, and the middle partition includes a positive partition arranged parallel to the side panel and an oblique partition arranged obliquely relative to the positive partition. The oblique partition is arranged close to the back panel, and the distance between the oblique partition and the back panel increases from the side away from the cooling fan to the side close to the cooling fan. An auxiliary heat dissipation cavity is formed between the oblique partition and the back panel, and the auxiliary heat dissipation cavity is connected to the main heat dissipation cavity. One side of the condenser extends to the auxiliary heat dissipation cavity.

4. An air conditioner outdoor unit according to claim 3, characterized in that: The radiator is arranged in the auxiliary heat dissipation cavity; or, a part of the radiator is arranged in the auxiliary heat dissipation cavity, and the other part is arranged in the main heat dissipation cavity; or, the radiator is arranged at a position of the circuit board close to the main heat dissipation cavity.

5. The air conditioner outdoor unit according to claim 3, characterized in that: The included angle between the oblique partition and the rear back plate is β, β>α.

6. An air conditioner outdoor unit according to claim 3, characterized in that: The electric control box assembly also includes a mounting box, the circuit board is fixed to the mounting box, and a first connecting portion and a second connecting portion are provided on the mounting box. The first connecting portion is fixed to the positive partition, and the second connecting portion is fixed to the oblique partition.

7. An air conditioner outdoor unit according to any one of claims 1 to 6, characterized in that: The electric control box assembly has adjacent long sides and short sides, the short sides of the electric control box assembly extend vertically, and the long sides of the electric control box assembly are arranged horizontally.

8. An air conditioner outdoor unit according to any one of claims 1 to 6, characterized in that: The front side of the circuit board is provided with electrical components and faces the compressor cavity, and the electrical components are exposed in the compressor cavity.

9. An air conditioner outdoor unit according to any one of claims 1 to 6, characterized in that: A heat dissipation window is provided on the middle partition, and the heat dissipation window is arranged obliquely downward toward the opening on one side of the compressor cavity. The electric control box assembly is arranged above the heat dissipation window, and the fan blades of the heat dissipation fan close to one side of the middle partition move from bottom to top.

10. An air conditioner outdoor unit according to any one of claims 1 to 6, characterized in that: A connecting plate is provided inside the shell, the rear side of the connecting plate is fixed to the back plate, the front side of the connecting plate is fixed to the middle partition plate, and one end of the condenser is fixed to the connecting plate.

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