Outdoor unit of air conditioner

Abstract

The present invention provides an outdoor unit of an air conditioner, comprising: a housing, a top air outlet is arranged at the top of the housing, and a switchable maintenance window is arranged on the front surface of the housing; a compressor, the compressor is arranged in the housing and is used for compressing refrigerant; an outdoor heat exchanger, the outdoor heat exchanger is arranged on the side wall of the housing and is used for allowing the refrigerant to flow and exchange heat; an electric control box, a circuit board is arranged in the electric control box, the circuit board is used for controlling the operation of the compressor, the electric control box is vertically arranged and is located inside the maintenance window; a heat dissipation assembly, the heat dissipation assembly is detachably arranged on the front side of the circuit board and is used for dissipating heat from the circuit board. It is realized that the heat dissipation assembly is convenient to disassemble and assemble, so as to improve the maintenance convenience.

Description

Technical Field

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

[0002] Air conditioners are commonly used household appliances in people's daily lives. Air conditioners are divided into wall-mounted air conditioners and cabinet air conditioners. Among them, an air conditioner generally includes an indoor unit and an outdoor unit. The indoor unit is installed on the indoor side, while the outdoor unit is installed on the outdoor side.

[0003] The outdoor units in the prior art are divided into: top-outdoor units and side-outdoor units according to the air outlet mode. The top-outdoor units are widely used in central air conditioners due to their strong heat exchange capacity. The top-outdoor unit generally includes a housing, and components such as a compressor, an outdoor heat exchanger, an outdoor fan, and an electric control box installed in the housing. The housing forms an air outlet at the top, the outdoor fan is arranged at the air outlet, and the outdoor heat exchanger is distributed around the inner side wall of the housing. Since the power of the top-outdoor unit is relatively large, during operation, a lot of heat is generated by various drive modules on the circuit board in the electric control box. For example, the frequency conversion drive module used to drive the compressor to operate on the circuit board will exceed 100 degrees under the influence of the high-temperature external environment during high-power operation. In order to achieve rapid cooling, generally, a radiator is configured. The radiator is generally configured on the back of the electric control box to dissipate heat from the circuit board in the electric control box.

[0004] However, since the outdoor heat exchangers are generally distributed on both sides and the back of the housing of the top-outdoor unit, and the electric control box is generally arranged on the front of the housing. When the radiator needs to be disassembled and repaired, it is necessary to disassemble the electric control box together, resulting in greater maintenance difficulty. In view of this, how to design an air-conditioning technology that is convenient for maintenance to reduce the maintenance difficulty is the technical problem to be solved by the present invention. Summary of the Invention

[0005] The present invention provides an air conditioner, which realizes convenient disassembly and assembly of the heat dissipation component to improve the maintenance convenience.

[0006] In some embodiments of the present application, an outdoor unit of an air conditioner includes:

[0007] A housing, a top air outlet is provided at the top of the housing, and an openable and closable maintenance window is provided on the front of the housing;

[0008] A compressor, which is arranged in the housing and is used for compressing refrigerant;

[0009] An outdoor heat exchanger, which is arranged on the side wall of the housing and is used for allowing the refrigerant to flow and exchange heat;

[0010] The electric control box, in which a circuit board is arranged, is used to control the operation of the compressor. The electric control box is vertically arranged and located inside the maintenance window.

[0011] The heat dissipation component is detachably arranged on the front side of the circuit board and is used to dissipate heat from the circuit board.

[0012] By detachably installing the heat dissipation component on the front side of the circuit board, when the heat dissipation component fails and needs to be disassembled and repaired, the maintenance window can be opened to disassemble the heat dissipation component from the circuit board without disassembling the entire electric control box, which is convenient for the operator to perform maintenance. At the same time, since the electric control box is vertically arranged at the maintenance window, the front area of the outer shell can be fully utilized to place a large enough circuit board to meet the installation and heat conduction requirements of the heat dissipation component, realizing convenient disassembly and assembly of the heat dissipation component to improve the maintenance convenience.

[0013] In some embodiments of the present application, the electric control box includes:

[0014] The box body, the front of which is an open structure;

[0015] The box cover is detachably installed on the front of the box body;

[0016] Wherein, the circuit board and the heat dissipation component are both arranged in the box body and are blocked by the box cover.

[0017] In some embodiments of the present application, an installation area is formed on the front of the circuit board, and the heat dissipation component is arranged in the installation area and is in thermal conduction connection with the circuit board.

[0018] In some embodiments of the present application, a heat conduction seat is arranged in the installation area of the circuit board, a heat pipe is arranged on the heat conduction seat, the heat pipe penetrates through the circuit board and is distributed on the back of the circuit board; the heat dissipation component is arranged on the heat conduction seat.

[0019] In some embodiments of the present application, the heat pipes are distributed circuitously on the back of the circuit board.

[0020] In some embodiments of the present application, the heat pipes are bonded to the back of the circuit board by thermal conductive glue.

[0021] In some embodiments of the present application, the heat dissipation component includes:

[0022] The refrigerant heat dissipation component, in which a refrigerant flow channel for the refrigerant to flow is formed;

[0023] Wherein, the refrigerant heat dissipation component is arranged on the circuit board and is in thermal conduction connection with the circuit board. The heat conduction plate can be made of materials with excellent thermal conductivity such as aluminum or copper.

[0024] In some embodiments of the present application, the refrigerant heat dissipation component includes:

[0025] A heat conduction block for conducting heat;

[0026] A refrigerant pipe forming the refrigerant flow channel;

[0027] Wherein, the refrigerant pipe is arranged on the heat conduction block, and the heat conduction block is arranged on the heat conduction plate.

[0028] In some embodiments of the present application, the heat conduction block can also be made of materials with excellent heat conduction performance such as aluminum or copper.

[0029] In some embodiments of the present application, the heat dissipation assembly further includes: a heat conduction plate for conducting heat;

[0030] Wherein, the heat conduction plate is sandwiched between the refrigerant heat dissipation component and the circuit board, and the heat conduction plate is in thermal conduction connection with the refrigerant heat dissipation component and the circuit board respectively.

[0031] In some embodiments of the present application, a heat conduction gasket is further arranged between the heat conduction plate and the refrigerant heat dissipation component.

[0032] In some embodiments of the present application, a card slot is further arranged on the heat conduction plate, and the heat dissipation assembly is clamped in the card slot.

[0033] In some embodiments of the present application, two guiding parts are arranged on the heat conduction plate, the guiding parts protrude from the heat conduction plate, and the card slot is formed between the two guiding parts.

[0034] In some embodiments of the present application, the two guiding parts are arranged obliquely away from each other.

[0035] In some embodiments of the present application, a plurality of the circuit boards are arranged in the electric control box, and the heat dissipation assembly is arranged on each circuit board. Description of the Drawings

[0036] Figure 1 is a schematic structural diagram of an embodiment of a top-outlet air conditioner outdoor unit;

[0037] Figure 2 is Figure 1 the schematic structural diagram of the top-outlet air conditioner outdoor unit with the box cover removed in ;

[0038] Figure 3 is Figure 1 one of the schematic assembly diagrams of the electric control box and the refrigerant heat dissipation assembly in ;

[0039] Figure 4 isFigure 1 The second assembly schematic diagram of the middle electronic control box and the refrigerant heat dissipation component;

[0040] Figure 5 It is Figure 1 The exploded view of the refrigerant heat dissipation component in the middle;

[0041] Figure 6 It is Figure 1 The first structural schematic diagram of the heat conduction plate in the middle;

[0042] Figure 7 It is Figure 1 The second structural schematic diagram of the heat conduction plate in the middle;

[0043] Figure 8 It is the structural schematic diagram of another embodiment of the top air outlet type air conditioner outdoor unit. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0045] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0046] In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0047] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] An air conditioner provided in this embodiment performs a refrigeration and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant medium to the air that has been conditioned and heat-exchanged.

[0049] The compressor compresses the refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0050] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by using the latent heat of evaporation of the refrigerant for heat exchange with the material to be cooled. During the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0051] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor, the outdoor heat exchanger, and the outdoor fan. The indoor unit of the air conditioner includes the indoor heat exchanger and the indoor fan, and a throttling device (such as a capillary tube or an electronic expansion valve) can be provided in the indoor unit or the outdoor unit.

[0052] The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner executes the heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner executes the refrigeration mode.

[0053] Among them, the way in which the indoor heat exchanger and the outdoor heat exchanger are converted to be used as condensers or evaporators generally uses a four-way valve. For specific reference, please refer to the settings of a conventional air conditioner, which will not be elaborated here.

[0054] The refrigeration working principle of the air conditioner is as follows: The compressor operates to make the indoor heat exchanger (in the indoor unit, which is the evaporator at this time) in a super low-pressure state. The liquid refrigerant in the indoor heat exchanger quickly evaporates and absorbs heat. The air blown by the indoor fan passes through the coils of the indoor heat exchanger, cools down, and then blows into the room as cold air. After the refrigerant evaporates and vaporizes, it is pressurized by the compressor and condenses into a liquid under the high-pressure environment in the outdoor heat exchanger (in the outdoor unit, which is the condenser at this time), releasing heat. Through the outdoor fan, the heat is dissipated into the atmosphere. In this way, the refrigeration effect is achieved through such a cycle.

[0055] The heating working principle of the air conditioner is as follows: The gaseous refrigerant is pressurized by the compressor to become a high-temperature and high-pressure gas, and enters the indoor heat exchanger (which is the condenser at this time). It condenses and liquefies to release heat and becomes a liquid. At the same time, it heats the indoor air, thereby achieving the purpose of raising the indoor temperature. The liquid refrigerant passes through the throttling device to reduce pressure and enters the outdoor heat exchanger (which is the evaporator at this time). It evaporates and vaporizes to absorb heat and becomes a gas. At the same time, it absorbs the heat of the outdoor air (the outdoor air becomes colder) and becomes a gaseous refrigerant, and then enters the compressor again to start the next cycle.

[0056] Refer to Figures 1-7 As shown, according to some embodiments of the present application, the top-air-outdoor unit of the air conditioner, which is used to connect the indoor unit of the air conditioner, includes: a housing 1, a compressor (not shown), an outdoor heat exchanger 2, an outdoor fan 3, an electric control box 4, and a heat dissipation component 5.

[0057] Among them, a top air outlet 11 is formed at the top of the housing 1, and a switchable maintenance window (not marked) is formed on the front surface of the housing 1. The outdoor fan 3 is located below the top air outlet 11. The compressor is arranged in the housing 1 and is used to compress the refrigerant, while the outdoor heat exchanger 2 is distributed around the inner side wall of the housing 1 and allows the refrigerant to flow for heat exchange. The compressor and the outdoor heat exchanger 2 are connected to the indoor heat exchanger in the indoor unit of the air conditioner to form a refrigeration circuit for the refrigerant to flow.

[0058] In addition, a circuit board 41 is arranged in the electric control box 4, and the circuit board 41 is used to control the operation of the compressor and the outdoor fan 3. Correspondingly, a variable-frequency drive module and a fan drive module are arranged on the circuit board 41. For the specific implementation entities of the variable-frequency drive module and the fan drive module, reference can be made to the configuration in a conventional outdoor unit, and no limitation and elaboration will be made here.

[0059] A heat dissipation component 5 is arranged on the circuit board 41 to absorb the heat generated by relevant modules on the circuit board 41. In order to facilitate the maintenance and disassembly of the heat dissipation component 5, the heat dissipation component 5 is detachably arranged on the front side of the circuit board 41.

[0060] Specifically, during the actual assembly process, the circuit board 41 is first installed in the electronic control box 4, and then the heat dissipation component is installed on the front side of the circuit board 41. In this way, the heat dissipation component 5 can absorb heat from the circuit board 41 and quickly dissipate the heat, realizing the heat dissipation and cooling treatment of the heat dissipation component 5 for the circuit board 41.

[0061] When the heat dissipation component 5 needs to be repaired and replaced, the maintenance window on the front of the housing 1 is opened, and the heat dissipation component 5 can be directly disassembled, repaired and replaced, which is convenient for the operator to repair and improves the maintenance convenience.

[0062] In some embodiments, for the electronic control box 4, it includes a box body 401 and a box cover 402. The front of the box body 401 is an open structure and is installed inside the maintenance window, while the box cover 402 is detachably installed on the front of the box body 401; wherein, the circuit board 41 and the heat dissipation component 5 are both arranged in the box body 401 and are blocked by the box cover 402.

[0063] Specifically, the box body 401 is used to install the circuit board 41 and the heat dissipation component 5, and the circuit board 41 and the heat dissipation component 5 are blocked and protected by the box cover 402.

[0064] In another embodiment, an installation area (not marked) is formed on the front of the circuit board 41, and the heat dissipation component 5 is arranged in the installation area and is in thermal conduction connection with the circuit board 41. Specifically, a separate installation area is formed on the circuit board 41 for installing the heat dissipation component 5, and no electronic components will be arranged in the installation area.

[0065] In order to facilitate the assembly of the heat dissipation component 5 and the circuit board 41, a heat conduction seat 42 is arranged in the installation area of the circuit board 41, a heat pipe 43 is arranged on the heat conduction seat 42, the heat pipe 43 penetrates through the circuit board 41 and is distributed on the back of the circuit board 41; the heat dissipation component 5 is arranged on the heat conduction seat 42.

[0066] Since the heat dissipation component 5 is arranged in the installation area of the circuit board 41, and electronic components are arranged on the periphery of the installation area. The heat generated by the electronic components is transferred to the heat dissipation component 5 through the circuit board 41. In this way, the heat dissipation efficiency of the electronic components far from the installation area will be reduced.

[0067] By arranging the heat pipe 43 on the back of the circuit board 41, the heat generated by the electronic components in different areas of the circuit board 41 can be quickly absorbed by the heat pipe 43 at the back. The heat pipe 43 can quickly transfer the heat to the heat conduction seat 42, and then transfer the heat to the heat dissipation component 5 through the heat conduction seat 42 to meet the requirement of uniform heat dissipation in different areas of the circuit board 41.

[0068] For the heat conduction base 42, it can be made of materials with good heat conduction performance, such as materials with excellent heat conduction performance like aluminum or copper. Additionally, the heat conduction base 42 can be connected to the circuit board 41 by means of screw fixation or embedding, and the heat dissipation component 5 is fixed on the heat conduction base 42 by screws, and a first heat conduction gasket 44 is provided between the two to reduce the assembly gap therebetween, thereby improving the heat transfer efficiency.

[0069] For the heat pipe 43, it is arranged on the back of the circuit board 41 in a meandering distribution manner to cover the circuit board 41 to the maximum extent. And in order to increase the heat transfer area with the circuit board 41, the heat pipe 43 is bonded to the back of the circuit board 41 through heat-conducting glue.

[0070] In some other embodiments, in order to improve the heat dissipation performance, the heat dissipation component 5 utilizes a refrigerant to absorb the heat released by the circuit board 41.

[0071] Specifically, the heat dissipation component 5 uses the refrigerant flowing in the refrigeration circuit to dissipate heat from the circuit board 41. And the heat released by the circuit board 41 will be directly absorbed by the heat dissipation component 5, and the heat will be quickly taken away by the circulating refrigerant, thereby meeting the requirement of rapid heat dissipation of the circuit board 41.

[0072] In some embodiments of the present application, in order to enable the heat released by the circuit board 41 to be directly and efficiently absorbed and taken away by the heat dissipation component 5, the heat dissipation component 5 includes: a heat conduction plate 51 and a refrigerant heat dissipation component 52.

[0073] For the heat conduction plate 51, it is used to conduct heat. For example: it can be made of materials with good heat conduction performance, such as materials with excellent heat conduction performance like aluminum or copper.

[0074] For the refrigerant heat dissipation component 52, it is formed with a refrigerant flow channel for the refrigerant to flow; the refrigerant in the refrigeration circuit flows into the refrigerant flow channel to take away heat by absorbing heat with the refrigerant.

[0075] Wherein, the heat conduction plate 51 is sandwiched between the refrigerant heat dissipation component 52 and the circuit board 41, and the heat conduction plate 51 is in thermal conduction connection with the refrigerant heat dissipation component 52 and the circuit board 41 respectively. The heat generated by the operation of the circuit board 41 is directly absorbed by the heat conduction plate 51, and by using the excellent heat conduction performance of the heat conduction plate 51, the heat is transferred to the refrigerant heat dissipation component 52. Since there is flowing refrigerant in the refrigerant heat dissipation component 52, the flowing refrigerant absorbs the heat conducted by the heat conduction plate 51, thereby realizing that the refrigerant directly absorbs the heat of the circuit board 41 to achieve the purpose of rapid heat dissipation.

[0076] In some other embodiments of the present application, for the refrigerant heat dissipation component 52, it includes: a heat conduction block 521 and a refrigerant pipe 522.

[0077] Similarly, the heat conducting block 521 can also be made of materials with excellent heat conductivity such as aluminum or copper, which is used to conduct heat. For the refrigerant pipe 522, it is used to transport the refrigerant. The refrigerant pipe 522 is arranged on the heat conducting block 521, and the heat conducting block 521 is arranged on the heat conducting plate 51.

[0078] The heat conducting plate 51 absorbs the heat generated by the circuit board 41 and transfers it to the refrigerant pipe 522. The refrigerant flowing in the refrigerant pipe 522 absorbs the heat and quickly takes it away.

[0079] Among them, in order to increase the heat conduction area of the refrigerant pipe 522, it can be clamped between the heat conducting block 521 and the heat conducting plate 51. On the one hand, one side of the refrigerant pipe 522 is in direct contact with the heat conducting plate 51 to absorb heat. On the other hand, the heat conducting block 521 absorbs the heat conducted by the heat conducting plate 51 and is absorbed by the other side of the refrigerant pipe 522 through heat conduction, thereby improving the heat conduction efficiency.

[0080] In addition, in order to increase the heat conduction area of the refrigerant pipe 522, the heat conducting block 521 can also be used to wrap the refrigerant pipe 522, that is, a groove is formed in the heat conducting block 521, and the refrigerant pipe 522 passes through the groove so that the circumferential wall of the refrigerant pipe 522 is in good contact with the heat conducting block 521. In this way, the heat conduction area of the refrigerant pipe 522 can also be effectively increased to improve the heat dissipation efficiency.

[0081] In some embodiments of the present application, for the way the refrigerant flows into the refrigerant pipe 522, the refrigerant pipe 522 can be connected in series in the refrigeration circuit of the air conditioner. In this way, after the compressor is started, the refrigerant will flow through the refrigerant pipe 522, thereby maximizing the heat dissipation performance.

[0082] Among them, for the refrigeration circuit configured by the air conditioner itself, based on the above description, it includes the compressor, the outdoor heat exchanger 2, the throttling device and the indoor heat exchanger connected together. At the same time, in order to realize the switching between the refrigeration and heating modes, a four-way valve is configured in the refrigeration circuit to realize the switching of the air conditioner operation mode. Regarding the refrigerant flow form and specific control method of the air conditioner refrigeration circuit, no restrictions and detailed descriptions are made here, and the configuration of a conventional air conditioner can be referred to.

[0083] For the refrigerant pipe 522, it is connected between the outdoor heat exchanger 2 and the indoor heat exchanger, and the refrigerant flowing between the outdoor heat exchanger 2 and the indoor heat exchanger is utilized. Among them, for the throttling device in the refrigeration circuit, electronic expansion valves can be respectively arranged at both ends of the refrigerant pipe 522. Then, when the air conditioner switches modes, by controlling the opening degrees of the electronic expansion valves on both sides, the requirements for the normal operation of the refrigeration circuit can be met, and at the same time, the requirements for the refrigerant pipe 522 to dissipate heat from the circuit board 41 can be met.

[0084] Among them, the electronic expansion valve is divided into an indoor expansion valve and an outdoor expansion valve. For different operating modes of the air conditioner, the following description is given.

[0085] During the refrigeration operation, the exhaust gas of the compressor enters the outdoor heat exchanger 2 through the four-way valve, condenses and releases heat in the outdoor heat exchanger 2. Since the condensation process is to release heat to the outdoor environment, the temperature of the condensed liquid refrigerant is higher than the ambient temperature. The condensed liquid refrigerant enters the refrigerant pipe 522 through the outdoor expansion valve. The outdoor expansion valve is fully open and does not throttle, so the temperature of the refrigerant entering the refrigerant pipe 522 is higher than the ambient temperature. At this time, no condensation will occur on the surface of the refrigerant heat dissipation component; then the refrigerant enters the indoor side, is throttled by the indoor expansion valve and then enters the indoor heat exchanger to evaporate and absorb heat, generating a refrigeration effect. The evaporated refrigerant returns to the outdoor side and enters the compressor to complete a refrigeration cycle.

[0086] During the heating operation, the exhaust gas of the compressor enters the indoor heat exchanger through the four-way valve, condenses and releases heat in the indoor heat exchanger, generating a heating effect. The refrigerant condensation process releases heat to the indoor environment, and the temperature of the condensed liquid refrigerant is higher than the indoor environment temperature. Generally, the indoor temperature is higher than the outdoor temperature during the heating operation, and the refrigerant temperature is also much higher than the outdoor environment temperature; at this time, the indoor expansion valve is fully open and does not throttle, so after the refrigerant passes through the indoor expansion valve and returns to the outdoor side, it enters the heat dissipation component 5, and the refrigerant temperature is still higher than the ambient temperature, and no condensation will occur. Then the refrigerant enters the outdoor expansion valve for throttling, enters the outdoor heat exchanger for evaporation after throttling, and then returns to the compressor to complete the heating cycle.

[0087] By adopting the above control method, under the condition of meeting the heat dissipation requirements of the circuit board 41, condensation caused by too low temperature of the heat dissipation component 5 can be avoided, and further, the short circuit of the circuit of the circuit board 41 caused by condensation can be avoided, thereby improving the use reliability.

[0088] In some embodiments of the present application, a second heat-conducting gasket 53 is further provided between the heat-conducting plate 51 and the refrigerant heat dissipation component 52. Specifically, the second heat-conducting gasket 53 can conduct heat between the heat-conducting plate 51 and the refrigerant heat dissipation component 52 to improve the heat transfer efficiency between the two.

[0089] Among them, in order to facilitate the connection of the heat-conducting plate 51 with the heat dissipation component 5, a card slot 511 is further provided on the heat-conducting plate 51, and the heat dissipation component 5 is clamped in the card slot 511. Specifically, by adopting the clamping method, the heat-conducting plate 51 and the heat dissipation component 5 can be quickly assembled together.

[0090] The heat conducting plate 51 is provided with two guiding portions 512 which protrude from the heat conducting plate 51, and a clamping groove 511 is formed between the two guiding portions 512. The heat conducting block 521 of the refrigerant heat dissipation component 52 is clamped in the clamping groove 511 through guiding by the guiding portions 512 on both sides, so as to complete the assembly of the heat conducting plate 51 and the refrigerant heat dissipation component 52.

[0091] A positioning pin 513 can also be arranged between the two clamping grooves 511 on the heat conducting plate 51. Correspondingly, a positioning hole 5211 is arranged on the heat conducting block 521, and the positioning pin 513 is inserted into the positioning hole 5211 for positioning, so as to facilitate the operator to assemble quickly and accurately. In addition, the two guiding portions 512 are arranged obliquely away from each other, so as to guide and install the heat conducting block 521 through the two inclined guiding portions 512.

[0092] In some embodiments, for an air conditioner with a larger capacity, two compressors are configured in the housing 1. Correspondingly, as Figure 8 shown, two circuit boards 41 are arranged in the electronic control box 4, and each circuit board 41 is configured with a heat dissipation component 5, and then the corresponding circuit board 41 is dissipating heat specifically through the heat dissipation component 5.

[0093] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An outdoor unit of an air conditioner, characterized in that, Comprising: A housing, at the top of which there is a top air outlet, and on the front of which there is a switchable maintenance window; A compressor, which is arranged in the housing and is used for compressing refrigerant; An outdoor heat exchanger, which is arranged on the side wall of the housing and is used for allowing the refrigerant to flow and exchange heat; An electric control box, in which there is a circuit board for controlling the operation of the compressor. The electric control box is vertically arranged and is located inside the maintenance window. The electric control box includes a box body and a box cover; A heat dissipation component, which is detachably arranged on the front side of the circuit board and is used for dissipating heat from the circuit board; An installation area is formed on the front of the circuit board, and the heat dissipation component is arranged in the installation area and is in thermal conduction connection with the circuit board; A heat conduction seat is arranged in the installation area of the circuit board, and a heat pipe is arranged on the heat conduction seat. The heat pipe penetrates through the circuit board and is distributed on the back of the circuit board. The heat dissipation component is arranged on the heat conduction seat. The heat pipe is circuitously distributed on the back of the circuit board; 2. The air conditioner outdoor unit according to claim 1, characterized in that, The front of the box body is of an open structure; The box cover is detachably installed on the front of the box body; Wherein, the circuit board and the heat dissipation component are both arranged in the box body and are blocked by the box cover; 3. The air conditioner outdoor unit according to claim 1, characterized in that, The heat pipe is bonded to the back of the circuit board through heat-conducting glue; 4. The air conditioner outdoor unit according to any one of claims 1 to 3, characterized in that, The heat dissipation component includes: A refrigerant heat dissipation part, in which there is a refrigerant flow channel for allowing the refrigerant to flow; Wherein, the refrigerant heat dissipation part is arranged on the circuit board and is in thermal conduction connection with the circuit board; 5. The air conditioner outdoor unit according to claim 4, characterized in that, The refrigerant heat dissipation part includes: A heat conduction block for conducting heat; A refrigerant pipe forming the refrigerant flow channel; Wherein, the refrigerant pipe is arranged on the heat conduction block; 6. The air conditioner outdoor unit according to claim 5, characterized in that, The heat dissipation component further includes: A heat conduction plate for conducting heat, and the heat conduction block is arranged on the heat conduction plate; Wherein, the heat conduction plate is clamped between the refrigerant heat dissipation part and the circuit board, and the heat conduction plate is in thermal conduction connection with the refrigerant heat dissipation part and the circuit board respectively; 7. The air conditioner outdoor unit according to claim 4, wherein, A plurality of the circuit boards are arranged in the electric control box, and the heat dissipation component is arranged on each circuit board.

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