Outdoor unit of air conditioner

Abstract

The utility model discloses an outdoor unit of an air conditioner. The outdoor unit comprises a shell; the middle partition plate is arranged in the machine shell, and the machine shell is divided into a first cavity and a second cavity by the middle partition plate; the heat exchanger is arranged in the machine shell; the compressor is arranged in the first chamber; the draught fan assembly is arranged in the second cavity, airflow outside the machine shell is guided into the second cavity from the outdoor air inlet through the draught fan assembly, and the airflow is subjected to heat exchange through the heat exchanger and is output outwards through the outdoor air outlet; the electric appliance box is fixedly connected with the middle partition plate; the electric appliance box comprises a box body which is fixedly connected with the middle partition plate; the circuit board is arranged in the box body; the radiator is arranged in the box body and is opposite to the circuit board; the electric appliance box further comprises an installation support, the radiator, the installation support and the circuit board are sequentially arranged in the first direction, the installation support is fixed to the circuit board, and the radiator is fixed to the installation support. And winged insects are prevented from falling on pins of the electric components through the mounting bracket, so that the stability of the radiator is improved.

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] The air conditioner outdoor unit is usually installed on the outside of the building and is responsible for processing and releasing the heat generated in the indoor air-conditioning system. It generally includes components such as the casing, compressor, fan assembly, heat exchanger and electrical box. The circuit board in the electrical box is equipped with electrical components, which can control the operation of the air conditioner outdoor unit and monitor various parameters. The electrical box is also equipped with a radiator to ensure that the electrical components operate within the normal operating temperature range.

[0003] In the related art, the heat sink and the electrical components are fixed by screws. The temperature of the electrical components is relatively high when they are working. A structure to block flying insects is provided inside or outside the electrical box, such as a filter or a fence structure, to prevent flying insects from falling onto the pins of the electrical components.

[0004] However, since the electrical components in the electrical box are exposed on the circuit board, there is a risk that the filter or fence and other blocking structures will be damaged or fail to block all flying insects. After passing through the blocking structure, the flying insects will fall to the pins of the electrical components with high temperatures, which can easily cause the circuit board to short-circuit and fail. In addition, the heat sink and the electrical components are only fixed by screws. The heat sink is heavy. If the heat sink falls during transportation, the pins of the electrical components may be stressed and cracked, causing the electronic components to fail. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an air conditioner outdoor unit, which can effectively prevent flying insects from falling on the pins of electrical components by providing a mounting bracket, thereby increasing the stability of the radiator and reducing the risk of circuit board failure.

[0006] The outdoor unit of the air conditioner according to the first embodiment of the utility model comprises: a casing; a middle partition plate arranged in the casing, the middle partition plate divides the casing into a first chamber and a second chamber; a heat exchanger arranged in the casing; a compressor arranged in the first chamber; a fan assembly arranged in the second chamber, through which the airflow outside the casing is introduced into the second chamber from the outdoor air inlet, and is output to the outside through the outdoor air outlet through the heat exchanger; an electrical box, the electrical box is fixedly connected to the middle partition plate; the electrical box comprises: a box body, which is fixedly connected to the middle partition plate; a circuit board, which is arranged in the box body; a radiator, which is arranged in the box body and is arranged opposite to the circuit board; wherein the electrical box also comprises: a mounting bracket, the radiator, the mounting bracket and the circuit board are arranged in sequence in the first direction, the mounting bracket is fixed on the circuit board and the radiator is fixed on the mounting bracket.

[0007] According to the air conditioner outdoor unit of the embodiment of the utility model, by providing a mounting bracket, the circuit board, the mounting bracket and the radiator are used to surround the electrical components, which can effectively prevent flying insects from falling onto the pins of the electrical components, and the mounting bracket can provide a stronger supporting force for the radiator to prevent the radiator from falling during transportation and handling, thereby increasing the stability of the radiator and reducing the risk of circuit board failure.

[0008] According to some embodiments of the utility model, a first boss is provided on a side of the mounting bracket facing the circuit board, the first boss abuts against the circuit board, and a height of the first boss is h, where h satisfies the relationship: 0≤h≤3mm.

[0009] According to some embodiments of the present invention, the mounting bracket and the heat sink are in contact with each other.

[0010] According to some embodiments of the present invention, a gap is provided between the mounting bracket and the radiator.

[0011] According to some embodiments of the utility model, the electrical box further includes: a first fastener, the mounting bracket is provided with a first mounting hole, the radiator is provided with a second mounting hole, the circuit board is provided with a through hole, the first fastener fits in the through hole and passes through the first mounting hole and the second mounting hole. And, the electrical box further includes: a second fastener, the mounting bracket is provided with a third mounting hole, the radiator is provided with a fourth mounting hole, the circuit board is provided with a fifth mounting hole, the second fastener passes through the fifth mounting hole, the third mounting hole and the fourth mounting hole.

[0012] According to some embodiments of the utility model, a first positioning portion is provided on a side of the mounting bracket facing the radiator, and a second positioning portion is provided on a side of the radiator facing the mounting bracket, and the first positioning portion and the second positioning portion are positioned and matched.

[0013] According to some embodiments of the present utility model, the first positioning portion is one of a positioning protrusion and a positioning groove, the second positioning portion is the other of a positioning protrusion and a positioning groove, and the positioning protrusion and the positioning groove are positioned and matched.

[0014] According to some embodiments of the utility model, a third positioning portion is provided on a side of the circuit board facing the mounting bracket, and a fourth positioning portion is provided on a side of the mounting bracket facing the circuit board, and the third positioning portion and the fourth positioning portion are positioned and matched.

[0015] According to some embodiments of the present utility model, the third positioning portion is one of a positioning column and a positioning hole, the fourth positioning portion is the other of a positioning column and a positioning hole, and the positioning column and the positioning hole are positioned and matched.

[0016] According to the air conditioner outdoor unit of the second embodiment of the utility model, the air conditioner outdoor unit includes: a casing; a middle partition plate, which is arranged in the casing, and the middle partition plate divides the casing into a first chamber and a second chamber; a heat exchanger, which is arranged in the casing; a compressor, which is arranged in the first chamber; a fan assembly, which is arranged in the second chamber, and the airflow outside the casing is introduced into the second chamber from the outdoor air inlet through the fan assembly, and is output from the outdoor air outlet through the heat exchanger; an electrical box, which is fixedly connected to the middle partition plate; the electrical box includes: a box body, It is fixedly connected to the middle partition; a circuit board, which is arranged in the box body, and electrical components are arranged on the circuit board; a radiator, which is arranged in the box body and opposite to the electrical components; a mounting bracket, the radiator, the mounting bracket and the circuit board are arranged in sequence in a first direction, the mounting bracket is fixed on the circuit board and the radiator is fixed on the mounting bracket; wherein a limiting groove is formed between the mounting bracket and the circuit board, pins are arranged on the electrical components, the pins are connected to the circuit board, and the electrical components are arranged in the limiting groove.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 The structure of the circuit board, mounting bracket and heat sink according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the circuit board, mounting bracket and heat sink according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 The structure of the circuit board and the mounting bracket according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 4 The structure of the circuit board and the mounting bracket according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 5 The structure of the radiator according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 6 The structure of the radiator according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 7 The structure of the mounting bracket according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 8 The structure of the mounting bracket according to the embodiment of the utility model is shown in FIG. Figure 2 ;

[0027] Fig. 9 is an exploded view of a circuit board, a mounting bracket and a heat sink according to an embodiment of the utility model;

[0028] Fig.10 yes Fig. 9 A partial schematic diagram in FIG.

[0029] Fig.11 is a bottom view of a circuit board, a mounting bracket and a heat sink according to an embodiment of the utility model;

[0030] Fig.12 yes Fig.11 Sectional view BB in;

[0031] Fig.13 yes Fig.11 Section view CC in.

[0032] Reference numerals:

[0033] 11. Circuit board; 111. Via hole; 112. Fifth mounting hole; 113. Third positioning portion; 12. Heat sink; 121. Second mounting hole; 122. Fourth mounting hole; 123. Second positioning portion; 13. Mounting bracket; 131. First boss; 132. First mounting hole; 133. Third mounting hole; 134. First positioning portion; 135. Fourth positioning portion; 14. First fastener; 15. Second fastener. DETAILED DESCRIPTION

[0034] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0035] Reference below Figure 1-Figure 13 An outdoor unit of an air conditioner according to an embodiment of the present utility model is described.

[0036] The outdoor unit of the air conditioner of the embodiment of the utility model comprises: a casing, a middle partition, a heat exchanger, a compressor, a fan assembly and an electrical box.

[0037] The casing is the outermost structure of the air conditioner outdoor unit, which is in contact with the external building and is used to protect the internal components from the external environment and provide support for the internal components.

[0038] The middle partition is arranged in the casing, and the middle partition divides the casing into a first chamber and a second chamber. The first chamber and the second chamber may be two unequal spaces, and further, the first chamber may be a press chamber, and the second chamber may be an air duct chamber.

[0039] The heat exchanger is arranged in the casing. The heat exchanger can exchange heat with the refrigerant and release the heat exchanged with the refrigerant to the external environment. During the heat exchange process of the heat exchanger, the balance of the high-pressure and low-pressure areas of the refrigerant in the outdoor unit and the indoor unit of the air conditioner can be ensured, the normal cooling or heating of the air conditioner can be maintained, and the outdoor unit of the air conditioner can be prevented from overheating, protecting the normal operation of other components.

[0040] Specifically, the heat exchanger may be a condenser, which may condense high-temperature and high-pressure gaseous refrigerant into liquid, releasing a large amount of heat during the condensation process.

[0041] The specific types of refrigerants include Freon (R-, Ra, RA, etc.), ammonia, hydrocarbons (such as Ra, R, R, etc.), carbon dioxide (CO), etc.

[0042] The compressor is arranged in the first chamber. The compressor is mainly used to compress the refrigerant and increase the pressure and temperature of the refrigerant. The compressor has an air intake port and an air exhaust port. The low-temperature and low-pressure gaseous refrigerant is sucked in from the air intake port, and the piston is driven by the motor to compress it, and then the high-temperature and high-pressure gaseous refrigerant is discharged to the exhaust port to provide power for the refrigeration cycle.

[0043] The fan assembly is arranged in the second chamber, and the airflow outside the casing is introduced into the second chamber from the outdoor air inlet through the fan assembly, and is outputted from the outdoor air outlet after heat exchange through the heat exchanger. The outdoor airflow introduced by the fan assembly exchanges heat with the heat exchanger, and can take away the heat released by the heat exchanger, thereby preventing the outdoor unit of the air conditioner from overheating.

[0044] In addition, the continuous introduction of outdoor airflow through the fan assembly can accelerate the heat dissipation process of the heat exchanger, ensuring that the refrigerant can be cooled and condensed quickly.

[0045] Taking the refrigeration condition as an example, the operation process of the outdoor unit of the air conditioner is as follows: the compressor inhales low-temperature and low-pressure gaseous refrigerant from the air intake port, compresses it by driving the piston through the motor, and then discharges high-temperature and high-pressure gaseous refrigerant to the exhaust port and flows into the heat exchanger. After condensation through the condenser, it becomes low-temperature and high-pressure liquid refrigerant and flows out of the heat exchanger. It enters the indoor unit of the air conditioner through the expansion valve or throttling device, continues the refrigeration cycle, and releases a large amount of heat at the same time. In this process, the fan assembly continuously introduces airflow from the outside to exchange heat with the heat exchanger. The hot airflow after heat exchange is output from the outdoor air outlet under the action of the fan assembly, releasing heat to the outside.

[0046] The outdoor unit of the air conditioner also includes an electrical box, which is fixedly connected to the middle partition. The electrical box is responsible for controlling the operation mode of the air conditioner and monitoring various parameters of the outdoor unit of the air conditioner, such as temperature, pressure and current, to ensure that the outdoor unit of the air conditioner operates in a safe and efficient state.

[0047] The electrical box includes a box body, and the box body is fixedly connected to the middle partition. By fixing the box body and the middle partition, the electrical box can be fixed to the middle partition, ensuring that the electrical box remains stable during transportation, facilitating wiring of the electrical box, and improving the neatness of the air conditioner outdoor unit.

[0048] The circuit board 11 is arranged in the box body, and is used to receive signals from the thermostat, sensor and remote controller, and control the operation of the compressor, fan assembly and other components according to these signals to adjust the operation state of the air conditioner, and can also analyze the received signals, find faults in time and make corresponding treatments. The box body of the electrical box usually has good sealing performance to prevent water and dust from entering, which can ensure the safety and long-term stable operation of the internal circuit board 11 and other components.

[0049] The heat sink 12 is arranged in the box body and is arranged opposite to the circuit board 11. Various electrical components are arranged on the circuit board 11. The electrical components on the circuit board 11 are the core part of the air conditioner control system. Each electrical component has its specific function and role. Through the cooperation of these electrical components, a complex electronic circuit is formed to control and monitor the operation of the air conditioning system. However, heat is generated during the operation of the electrical components. By arranging the heat sink 12 in the box body and arranging the heat sink 12 and the circuit board 11 oppositely, the heat generated by the electrical components can be quickly dissipated, keeping the electrical components within a safe operating temperature range, ensuring their normal operation and extending their service life.

[0050] Among them, refer to Figure 1-2 and Fig. 9 As shown, the electrical box further includes: a mounting bracket 13, a radiator 12, the mounting bracket 13 and a circuit board 11 are sequentially arranged in a first direction, the mounting bracket 13 is fixed on the circuit board 11 and the radiator 12 is fixed on the mounting bracket 13. Specifically, in this embodiment, the first direction may be the up-down direction of the radiator 12, that is, the radiator 12 is arranged above the mounting bracket 13, the mounting bracket 13 is fixed above the circuit board 11, and the order from top to bottom is radiator 12-mounting bracket 13-circuit board 11.

[0051] Among them, the mounting bracket 13 is a hollow structure, the electrical components in the circuit board 11 are arranged in the middle of the mounting bracket 13, and the width of the radiator 12 in the front-to-back direction and the length in the left-to-right direction are both larger than the mounting bracket 13. The radiator 12 can block the area above the mounting bracket 13, so that the electrical components are surrounded by the circuit board 11, the mounting bracket 13 and the radiator 12, rather than being exposed on the circuit board 11, which can effectively prevent flying insects from falling on the pins of the electrical components and reduce the risk of failure of the circuit board 11.

[0052] In addition, the mounting bracket 13 is respectively connected to the circuit board 11 and the radiator 12 to fix the radiator 12 and the circuit board 11. Compared with only connecting with screws, the mounting bracket 13 can provide stronger supporting force, especially when the radiator 12 is large and heavy. It helps to reduce the movement and falling of the radiator 12 caused by vibration or other external forces during transportation and handling, and increase the stability of the radiator 12.

[0053] At the same time, the mounting bracket 13 surrounds the electrical components. The mounting bracket 13 is smaller than the radiator 12. Even if the radiator 12 falls under extreme circumstances, it will not fall into the mounting bracket 13, thereby reducing the risk of damage to the pins of the electrical components and increasing the service life of the electrical box and the safety of the operation of the air conditioner outdoor unit.

[0054] Therefore, by setting up the mounting bracket 13 and using the circuit board 11, the mounting bracket 13 and the heat sink 12 to surround the electrical components, it is possible to effectively prevent flying insects from falling onto the pins of the electrical components, and the mounting bracket 13 can provide a stronger supporting force for the heat sink 12, thereby preventing the heat sink 12 from falling during transportation and handling, increasing the stability of the heat sink 12, and reducing the risk of failure of the circuit board 11.

[0055] Reference Figure 9-10 As shown, a first boss 131 is provided on the side of the mounting bracket 13 facing the circuit board 11, the first boss 131 abuts against the circuit board 11, and the height of the first boss 131 is h, and h satisfies the relationship: 0≤h≤3mm. Specifically, a first boss 131 is provided below the mounting bracket 13, and the circuit board 11 supports the mounting bracket 13 through the first boss 131, and the height of the first boss 131 is in the range of 0mm to 3mm.

[0056] Due to the limitation of the structure of the circuit board 11, the mounting bracket 13 and the first boss 131, the height of the first boss 131 cannot be less than 0 mm. When the height of the first boss 131 is 0 mm, the circuit board 11 abuts against the mounting bracket 13, and there is no structure of the first boss 131. This can ensure that the electrical components are completely enclosed in the range formed by the circuit board 11, the mounting bracket 13 and the radiator 12, and can effectively prevent flying insects from contacting the electrical components and avoid short circuit failure of the circuit board 11. However, the electrical components cannot dissipate heat well, which can easily affect the normal operation of the circuit board 11 and the electrical box.

[0057] Preferably, the height of the first boss 131 is not less than 0.5 mm, so that the gap between the circuit board 11 and the mounting bracket 13 is very small, which can prevent flying insects from contacting the electrical components and avoid short circuit failure of the circuit board 11, while the electrical components can dissipate heat.

[0058] Further preferably, the height of the first boss 131 is not less than 1 mm, so that the gap between the circuit board 11 and the mounting bracket 13 is smaller, which can prevent flying insects from contacting the electrical components and avoid short circuit failure of the circuit board 11. At the same time, the heat dissipation space of the electrical components is larger and the heat dissipation effect is better.

[0059] In addition, the height of the first boss 131 cannot be greater than 3 mm. If the height of the first boss 131 is greater than 3 mm, that is, the gap between the circuit board 11 and the mounting bracket 13 is greater than 3 mm, flying insects can pass through the space exceeding 3 mm, and can pass through the gap and contact the pins of electrical components, causing a short circuit and failure of the circuit board 11.

[0060] Preferably, the height of the first boss 131 is no greater than 2.5 mm, so that the gap between the circuit board 11 and the mounting bracket 13 is not large enough for flying insects to pass through, thereby preventing the circuit board 11 from failing, and leaving enough heat dissipation space to ensure the normal operation of electrical components.

[0061] Further preferably, the height of the first boss 131 is no more than 2 mm. The gap between the circuit board 11 and the mounting bracket 13 within this range can ensure that flying insects will not fly in, thereby improving the protection of electrical components. Moreover, the gap no more than 2 mm can ensure good heat dissipation of the electrical components.

[0062] Reference Figure 1-2 and Figure 11-13 As shown, the mounting bracket 13 and the radiator 12 are in contact with each other. The contact between the mounting bracket 13 and the radiator 12 can completely close the space above the mounting bracket 13, prevent flying insects from contacting the electrical components from above, and improve the safety of the electrical box.

[0063] Alternatively, when the heat sink 12 and the mounting bracket 13 are assembled, adjustments may be made so that a gap is provided between the mounting bracket 13 and the heat sink 12 to facilitate heat dissipation of the electrical components.

[0064] Reference Figure 3-13 As shown, the electrical box further includes: a first fastener 14, a first mounting hole 132 is provided on the mounting bracket 13, a second mounting hole 121 is provided on the radiator 12, a through hole 111 is provided on the circuit board 11, and the first fastener 14 is fitted in the through hole 111 and passes through the first mounting hole 132 and the second mounting hole 121. That is, the mounting bracket 13 and the radiator 12 can be connected by a fastener, wherein the first fastener 14 can be a screw, and the relative position between the mounting bracket 13 and the radiator 12 can be controlled by the first fastener 14 during assembly.

[0065] For example, a smaller tightening force is used and a structure such as a gasket is added to leave a gap between the mounting bracket 13 and the radiator 12, or the gasket is reduced and a larger tightening force is used to make the mounting bracket 13 and the radiator 12 contact each other.

[0066] Furthermore, the first fastener 14, the first mounting hole 132, the second mounting hole 121 and the through hole 111 can be multiple. Using multiple first fasteners 14 can improve the connection strength between the radiator 12 and the mounting bracket 13, prevent the radiator 12 from falling during transportation, and improve the safety of the electrical box.

[0067] Specifically, in this embodiment, four first mounting holes 132 are provided on the mounting bracket 13, four second mounting holes 121 are provided on the radiator 12, and four through holes 111 are provided on the circuit board 11. The first fastener 14 is engaged in the through hole 111 and passes through the first mounting hole 132 and the second mounting hole 121, so that the radiator 12 and the mounting bracket 13 can be fixed.

[0068] Reference Figure 3-13 As shown, the electrical box further includes: a second fastener 15, a third mounting hole 133 is provided on the mounting bracket 13, a fourth mounting hole 122 is provided on the radiator 12, a fifth mounting hole 112 is provided on the circuit board 11, and the second fastener 15 passes through the fifth mounting hole 112, the third mounting hole 133 and the fourth mounting hole 122. That is, the radiator 12, the mounting bracket 13 and the circuit board 11 are connected by the second fastener 15, and the radiator 12 and the mounting bracket 13 are further reinforced by the second fastener 15.

[0069] The second fastener 15 may be a screw.

[0070] Furthermore, the second fastener 15, the third mounting hole 133, the fourth mounting hole 122 and the fifth mounting hole 112 can be multiple. Using multiple second fasteners 15 can improve the connection strength between the radiator 12, the mounting bracket 13 and the circuit board 11, prevent the radiator 12 from falling during transportation, and at the same time enhance the reliability of the connection between the circuit board 11 and the radiator 12, thereby improving the safety of the electrical box.

[0071] Specifically, in this embodiment, two third mounting holes 133 are provided on the mounting bracket 13, two fourth mounting holes 122 are provided on the radiator 12, and two fifth mounting holes 112 are provided on the circuit board 11. The second fastener 15 can fix the radiator 12, the circuit board 11 and the mounting bracket 13 after passing through the fifth mounting hole 112, the third mounting hole 133 and the fourth mounting hole 122.

[0072] Reference Figure 2-10 As shown, the side of the mounting bracket 13 facing the radiator 12 is provided with a first positioning portion 134, and the side of the radiator 12 facing the mounting bracket 13 is provided with a second positioning portion 123, and the first positioning portion 134 and the second positioning portion 123 are positioned and matched. Before the mounting bracket 13 and the radiator 12 are installed, the first positioning portion 134 and the second positioning portion 123 can be used to first fix the approximate positions of the mounting bracket 13 and the radiator 12, and then assemble them, which can improve the assembly efficiency.

[0073] Reference Figure 2-10As shown, the first positioning portion 134 can be one of a positioning protrusion and a positioning groove, and the second positioning portion 123 can be the other of the positioning protrusion and the positioning groove, and the positioning protrusion and the positioning groove are positioned and matched. Through the positioning and matching of the positioning protrusion and the positioning groove, the positioning protrusion can be stuck in the positioning groove to limit the relative movement of the mounting bracket 13 and the radiator 12.

[0074] Specifically, in this embodiment, the first positioning portion 134 is a positioning groove, and the second positioning portion 123 is a positioning protrusion. The first positioning portion 134 is located at both ends of the mounting bracket 13 in the left and right directions, and the second positioning portion 123 is located below the radiator 12 at a position corresponding to the first positioning portion 134, and extends in the left and right directions, which can limit the relative movement of the mounting bracket 13 and the radiator 12 in the front and rear directions.

[0075] Reference Figure 6-11 As shown, a third positioning portion 113 is provided on one side of the circuit board 11 facing the mounting bracket 13, and a fourth positioning portion 135 is provided on one side of the mounting bracket 13 facing the circuit board 11, and the third positioning portion 113 and the fourth positioning portion 135 are positioned and matched. Before the mounting bracket 13 and the circuit board 11 are installed, the third positioning portion 113 and the fourth positioning portion 135 can be used to first fix the approximate positions of the mounting bracket 13 and the circuit board 11, and then assemble them, which can improve assembly efficiency.

[0076] Reference Figure 6-11 As shown, the third positioning portion 113 can be one of a positioning column and a positioning hole, and the fourth positioning portion 135 can be the other of the positioning column and the positioning hole, and the positioning column and the positioning hole are positioned and matched. Through the positioning and matching of the positioning column and the positioning hole, the positioning column can extend into the positioning hole to limit the relative movement of the mounting bracket 13 and the radiator 12.

[0077] Specifically, in this embodiment, the third positioning portion 113 is a positioning hole, the fourth positioning portion 135 is a positioning column, and the third positioning portion 113 corresponds to the fourth positioning portion 135 in position, which can limit the relative movement of the mounting bracket 13 and the circuit board 11 in the front-to-back direction and the left-to-right direction.

[0078] The utility model also provides an outdoor unit of an air conditioner, comprising a casing, a middle partition, a heat exchanger, a compressor, a fan assembly and an electrical box.

[0079] The electrical box is fixedly connected to the middle partition. The electrical box is responsible for controlling the operation mode of the air conditioner and monitoring various parameters of the air conditioner outdoor unit, such as temperature, pressure and current, to ensure that the air conditioner outdoor unit operates in a safe and efficient state.

[0080] The electrical box includes a box body, and the box body is fixedly connected to the middle partition. By fixing the box body and the middle partition, the electrical box can be fixed to the middle partition, ensuring that the electrical box remains stable during transportation, facilitating wiring of the electrical box, and improving the neatness of the air conditioner outdoor unit.

[0081] The circuit board 11 is arranged in the box body, and is used to receive signals from the thermostat, sensor and remote controller, and control the operation of the compressor, fan assembly and other components according to these signals to adjust the operation state of the air conditioner, and can also analyze the received signals, find faults in time and make corresponding treatments. The box body of the electrical box usually has good sealing performance to prevent water and dust from entering, which can ensure the safety and long-term stable operation of the internal circuit board 11 and other components.

[0082] The heat sink 12 is arranged in the box body and is arranged opposite to the circuit board 11. Various electrical components are arranged on the circuit board 11. The electrical components on the circuit board 11 are the core part of the air conditioner control system. Each electrical component has its specific function and role. Through the cooperation of these electrical components, a complex electronic circuit is formed to control and monitor the operation of the air conditioning system. However, heat is generated during the operation of the electrical components. By arranging the heat sink 12 in the box body and the heat sink 12 and the circuit board 11 are in contact, the heat generated by the electrical components can be quickly dissipated, keeping the electrical components within a safe operating temperature range, ensuring their normal operation and extending their service life.

[0083] The heat sink 12 , the mounting bracket 13 and the circuit board 11 are sequentially arranged in the first direction. The mounting bracket 13 is fixed on the circuit board 11 and the heat sink 12 is fixed on the mounting bracket 13 .

[0084] Specifically, in this embodiment, the first direction can be the up and down direction of the radiator 12, that is, the radiator 12 is arranged above the mounting bracket 13, and the mounting bracket 13 is fixed above the circuit board 11. The order from top to bottom is radiator 12-mounting bracket 13-circuit board 11.

[0085] A limiting groove is formed between the mounting bracket 13 and the circuit board 11 , pins are provided on the electrical components, the pins are connected to the circuit board 11 , and the electrical components are arranged in the limiting groove.

[0086] The electrical components are arranged in the limiting grooves of the mounting bracket 13, and the width of the heat sink 12 in the front-to-back direction and the length in the left-to-right direction are both greater than the mounting bracket 13, and the heat sink 12 can shield the area above the mounting bracket 13. In this way, the electrical components are surrounded by the circuit board 11, the mounting bracket 13 and the heat sink 12, rather than being exposed on the circuit board 11, which can effectively prevent flying insects from falling on the pins of the electrical components and reduce the risk of failure of the circuit board 11.

[0087] In addition, the mounting bracket 13 is respectively connected to the circuit board 11 and the radiator 12 to fix the radiator 12 and the circuit board 11. Compared with only connecting with screws, the mounting bracket 13 can provide stronger supporting force, especially when the radiator 12 is large and heavy. It helps to reduce the movement and falling of the radiator 12 caused by vibration or other external forces during transportation and handling, and increase the stability of the radiator 12.

[0088] At the same time, the mounting bracket 13 surrounds the electrical components. The mounting bracket 13 is smaller than the radiator 12. Even if the radiator 12 falls under extreme circumstances, it will not fall into the mounting bracket 13, thereby reducing the risk of damage to the pins of the electrical components and increasing the service life of the electrical box and the safety of the operation of the air conditioner outdoor unit.

[0089] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0091] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner outdoor unit, comprising: chassis; A middle partition is arranged in the housing, and the middle partition divides the housing into a first chamber and a second chamber; A heat exchanger is disposed in the casing; A compressor is disposed in the first chamber; A fan assembly is disposed in the second chamber, and the airflow outside the casing is introduced into the second chamber from the outdoor air inlet through the fan assembly, and is output to the outside from the outdoor air outlet after heat exchange by the heat exchanger; An electrical box, the electrical box being fixedly connected to the middle partition; Characterized in that the electrical box comprises: A box body, which is fixedly connected to the middle partition; A circuit board is arranged in the box body; A heat sink is disposed in the box body and opposite to the circuit board; Wherein, the electrical box further comprises: a mounting bracket, the radiator, the mounting bracket and the circuit board are arranged in sequence in a first direction, the mounting bracket is fixed on the circuit board and the radiator is fixed on the mounting bracket.

2. The air conditioner outdoor unit according to claim 1, characterized in that: A first boss is disposed on a side of the mounting bracket facing the circuit board, the first boss abuts against the circuit board, and a height of the first boss is h, where h satisfies the relationship: 0≤h≤3mm.

3. The air conditioner outdoor unit according to claim 1, characterized in that: The mounting bracket and the heat sink are in contact with each other.

4. The air conditioner outdoor unit according to claim 1, characterized in that: A gap is provided between the mounting bracket and the radiator.

5. The air conditioner outdoor unit according to claim 1, characterized in that: The electrical box further includes: a first fastener, a first mounting hole is provided on the mounting bracket, a second mounting hole is provided on the radiator, a through hole is provided on the circuit board, the first fastener is fitted in the through hole and passes through the first mounting hole and the second mounting hole; and, The electrical box also includes: a second fastener, a third mounting hole is provided on the mounting bracket, a fourth mounting hole is provided on the radiator, a fifth mounting hole is provided on the circuit board, and the second fastener passes through the fifth mounting hole, the third mounting hole and the fourth mounting hole.

6. The air conditioner outdoor unit according to claim 1, characterized in that: A first positioning portion is provided on a side of the mounting bracket facing the radiator, and a second positioning portion is provided on a side of the radiator facing the mounting bracket. The first positioning portion and the second positioning portion are positioned and matched.

7. The air conditioner outdoor unit according to claim 6, characterized in that: The first positioning portion is one of a positioning protrusion and a positioning groove, the second positioning portion is the other of a positioning protrusion and a positioning groove, and the positioning protrusion and the positioning groove are positioned and matched.

8. The air conditioner outdoor unit according to claim 1, characterized in that: A third positioning portion is provided on a side of the circuit board facing the mounting bracket, and a fourth positioning portion is provided on a side of the mounting bracket facing the circuit board. The third positioning portion and the fourth positioning portion are positioned and matched.

9. The air conditioner outdoor unit according to claim 8, characterized in that: The third positioning portion is one of a positioning column and a positioning hole, the fourth positioning portion is the other of a positioning column and a positioning hole, and the positioning column and the positioning hole are positioned and matched.

10. An air conditioner outdoor unit, comprising: chassis; A middle partition is arranged in the housing, and the middle partition divides the housing into a first chamber and a second chamber; A heat exchanger is disposed in the casing; A compressor is disposed in the first chamber; A fan assembly is disposed in the second chamber, and the airflow outside the casing is introduced into the second chamber from the outdoor air inlet through the fan assembly, and is output to the outside from the outdoor air outlet after heat exchange by the heat exchanger; An electrical box, the electrical box being fixedly connected to the middle partition; Characterized in that the electrical box comprises: A box body, which is fixedly connected to the middle partition; A circuit board is arranged in the box body, and electrical components are arranged on the circuit board; A heat sink is disposed in the box body and opposite to the electrical components; A mounting bracket, the heat sink, the mounting bracket and the circuit board are arranged in sequence in a first direction, the mounting bracket is fixed on the circuit board and the heat sink is fixed on the mounting bracket; A limiting groove is formed between the mounting bracket and the circuit board, pins are provided on the electrical component, the pins are connected to the circuit board, and the electrical component is arranged in the limiting groove.

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