Air conditioner outdoor unit and electric control component

Abstract

The utility model discloses an air conditioner outdoor unit and electric control part, the compressor chamber and the fan chamber have in air conditioner outdoor unit, and air conditioner outdoor unit includes the ventilation path of intercommunication fan chamber and compressor chamber, is equipped with electric control part in compressor chamber, and electric control part includes: circuit board and refrigerant radiator, the two sides of thickness direction of circuit board are first side and second side respectively, and the first side of circuit board is equipped with first passive device, and the second side of circuit board is equipped with first power device, and first passive device exposes in compressor chamber or is located in the heat dissipation air duct that communicates with compressor chamber, and refrigerant radiator sets up in the side of first power device that deviates from circuit board, and with first power device heat exchange cooperation. Therefore, the first power device of one side of circuit board can pass through refrigerant radiator and radiate, and the first passive device of the other side of circuit board can adopt the air cooling heat dissipation, and space is fully utilized, and the whole heat dissipation effect is good, and can promote the work reliability of electric control part.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment, and in particular to an outdoor unit of an air conditioner and an electrical control component. Background Technology

[0002] The electrical control components of the outdoor unit of an air conditioner contain power devices and passive devices on the circuit board. Both power devices and passive devices generate a lot of heat. Poor heat dissipation of the electrical control components affects their operational reliability. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention provides an outdoor air conditioning unit, wherein the electronic control components of the outdoor air conditioning unit have good heat dissipation performance and good operational reliability.

[0004] This utility model also proposes an electronic control component, which has good heat dissipation performance and good operational reliability.

[0005] According to the first aspect of the present invention, the outdoor unit of the air conditioner has a compressor cavity and a fan cavity. The outdoor unit includes a ventilation path connecting the fan cavity and the compressor cavity. An electronic control component is provided in the compressor cavity. The electronic control component includes a circuit board and a refrigerant radiator. The two sides of the circuit board in the thickness direction are a first side and a second side, respectively. A first passive device is provided on the first side of the circuit board, and a first power device is provided on the second side of the circuit board. The first passive device is exposed in the compressor cavity or located in a heat dissipation duct communicating with the compressor cavity. The refrigerant radiator is disposed on the side of the first power device away from the circuit board and cooperates with the first power device for heat exchange.

[0006] According to the present invention, the first power device on one side of the circuit board can be cooled by a refrigerant radiator, and the first passive device on the other side of the circuit board can be cooled by air. The space is fully utilized, the overall heat dissipation effect is good, and the working reliability of the electronic control components can be improved.

[0007] In some embodiments, the first passive device includes a first capacitor and a first inductor, the first capacitor and the first inductor being spaced apart along a first direction to form a heat dissipation channel extending along a second direction between the first capacitor and the first inductor, the second direction being perpendicular to the first direction.

[0008] In some embodiments, the refrigerant radiator extends along the second direction and is directly opposite the heat dissipation duct along the thickness direction of the circuit board. One edge of the circuit board in the second direction is a first edge. One end of the refrigerant radiator protrudes from the first edge. The end of the refrigerant radiator protruding from the first edge is exposed in the compressor cavity or located in the heat dissipation duct.

[0009] In some embodiments, the refrigerant radiator includes a heat-conducting plate and a refrigerant pipe. The refrigerant pipe includes a straight pipe section and a bent pipe section. There are multiple straight pipe sections arranged parallel to each other inside the heat-conducting plate. The bent pipe section is located outside the heat-conducting plate and connects to the straight pipe section. The bent pipe section protrudes from the first edge.

[0010] In some embodiments, the first edge is the upper edge of the circuit board, and the upper end of the refrigerant radiator protrudes upward from the upper edge of the circuit board.

[0011] In some embodiments, the circuit board is vertically positioned, with the first side being the front side of the circuit board and the second side being the rear side of the circuit board; and / or, at least a portion of the refrigerant radiator and the first passive device are exposed in the compressor cavity.

[0012] In some embodiments, the refrigerant radiator includes a heat-conducting plate and a refrigerant pipe. The heat-conducting plate includes a heat-conducting substrate and a heat-dissipating cover plate. The heat-conducting substrate is located between the circuit board and the heat-dissipating cover plate, and the refrigerant pipe is sandwiched between the heat-conducting substrate and the heat-dissipating cover plate. The electronic control component includes a base located on the second side of the circuit board. The circuit board is mounted on the base. The heat-conducting substrate passes through the base and engages with the first power device for heat exchange. The refrigerant pipe and the heat-dissipating cover plate are both located on the side of the base away from the circuit board.

[0013] In some embodiments, a second power device is further provided on the first side of the circuit board, and the electronic control component further includes a wind-cooled heat sink. The wind-cooled heat sink is disposed on the side of the second power device away from the circuit board and is heat exchanged with the second power device. The wind-cooled heat sink is exposed in the compressor cavity or located in the heat dissipation duct.

[0014] In some embodiments, the circuit board includes a second edge, the air-cooled heat sink is disposed adjacent to the second edge, the air-cooled heat sink includes a plurality of heat dissipation fins, a first flow gap is defined between two adjacent heat dissipation fins, and the extension direction of the first flow gap intersects the extension direction of the second edge at an acute angle or a right angle.

[0015] In some embodiments, the first passive device includes a first capacitor and a first inductor, the first capacitor and the first inductor being spaced apart along a first direction to form a heat dissipation channel extending along a second direction between the first capacitor and the first inductor, the second direction being perpendicular to the first direction, and the air-cooled heat sink being offset from the heat dissipation channel along the first direction.

[0016] In some embodiments, the first passive device includes a first inductor disposed adjacent to a third edge of the circuit board. The first inductor includes a magnetic core and a coil wound on the magnetic core. The coil is in the form of multiple turns and a second current gap is formed between adjacent turns. The extension direction of the second current gap intersects the extension direction of the third edge at an acute angle or a right angle.

[0017] In some embodiments, the outdoor unit of the air conditioner includes a partition plate spaced between the compressor cavity and the fan cavity, the third edge being the edge of the circuit board near the partition plate and extending in the vertical direction, and the ventilation path being configured as a vent through the partition plate.

[0018] In some embodiments, the vent is disposed laterally opposite to the first inductor.

[0019] In some embodiments, the compressor chamber is a closed chamber except for the ventilation path.

[0020] According to a second aspect of the present invention, an electronic control component includes: a circuit board, wherein two sides in the thickness direction of the circuit board are respectively a first side and a second side; a first passive device is provided on the first side of the circuit board, and a first power device is provided on the second side of the circuit board; the first passive device includes a first capacitor and a first inductor; the first capacitor and the first inductor are spaced apart along a first direction to form a heat dissipation channel extending along a second direction between the first capacitor and the first inductor; the second direction is perpendicular to the first direction; and one edge of the circuit board in the second direction is a first edge; a refrigerant heat sink is disposed on the side of the first power device away from the circuit board and is in heat exchange cooperation with the first power device; the refrigerant heat sink extends along the second direction and is directly opposite the heat dissipation channel along the thickness direction of the circuit board; and one end of the refrigerant heat sink protrudes from the first edge.

[0021] The electronic control component according to this utility model has good heat dissipation performance and good operational reliability.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an outdoor unit of an air conditioner according to an embodiment of the present invention;

[0024] Figure 2 This is a side view of a compressor cavity according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of an electronic control component according to an embodiment of the present invention;

[0026] Figure 4 This is a bottom view of the electronic control component and the partition plate according to an embodiment of the present invention.

[0027] Figure label:

[0028] Air conditioner outdoor unit 1000; compressor chamber 1000a; fan chamber 1000b;

[0029] Electrical control component 100; First direction X; Second direction Y; Thickness direction of circuit board Z;

[0030] Circuit board 1; First side 1a; Second side 1b; First passive device 11; First capacitor 111; First inductor 112; Magnetic core 1121; Coil 1122; Second overcurrent gap 1123; Extension line L3 of the second overcurrent gap; First power device 12; Heat dissipation duct 13; Second power device 14; First edge 1c; Upper edge 1c1; Second edge 1d; Third edge 1e; Extension line L2 of the second edge; Extension line L4 of the third edge;

[0031] 2. Refrigerant radiator; 21. Heat-conducting plate; 211. Heat-conducting substrate; 212. Heat dissipation cover plate; 22. Refrigerant pipe; 221. Straight pipe section; 222. Bend pipe section;

[0032] Base 3; air-cooled radiator 4; heat dissipation fins 41; first flow gap 42; extension line L1 of the first flow gap;

[0033] The angle α between the extension direction of the first flow gap and the extension direction of the second edge; the angle b between the extension direction of the second flow gap and the extension direction of the third edge.

[0034] Middle partition 200; ventilation path 201; normal line of middle partition L5;

[0035] Compressor 300; refrigerant circulation loop 400. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0038] The following description, with reference to the accompanying drawings, describes an embodiment of the air conditioner outdoor unit 1000.

[0039] According to an embodiment of the present utility model, the outdoor unit 1000 of the air conditioner is as follows: Figure 1 and Figure 2 As shown, the outdoor unit 1000 of the air conditioner has a compressor cavity 1000a and a fan cavity 1000b. The outdoor unit 1000 includes a ventilation path 201 connecting the fan cavity 1000b and the compressor cavity 1000a. The compressor cavity 100a is provided with an electronic control component 100, which includes a circuit board 1 and a refrigerant radiator 2. The two sides of the circuit board 1 in the thickness direction Z are a first side 1a and a second side 1b, respectively. The first side 1a of the circuit board 1 is provided with a first passive device 11, and the second side 1b of the circuit board 1 is provided with a first power device 12. The first passive device 11 is exposed in the compressor cavity 1000a or located in a heat dissipation duct communicating with the compressor cavity 1000a. The refrigerant radiator 2 is located on the side of the first power device 12 away from the circuit board 1 and is in heat exchange cooperation with the first power device 12.

[0040] According to an embodiment of the present invention, in the outdoor unit 1000 of the air conditioner, the first passive device 11 and the first power device 12 are respectively disposed on both sides of the circuit board 1. The first power device 12 dissipates heat through the refrigerant radiator 2, while the first passive device 11 uses air cooling, making full use of space. Both the first power device 12 and the first passive device 11 have good heat dissipation effects, which can improve the working reliability of the electronic control component 100. The installation of the refrigerant radiator 2 will not interfere with the first passive device 11, which facilitates the flexible selection and installation of the refrigerant radiator 2.

[0041] The type of the first power device 12 is not limited, and may include, for example, IGBT (Insulated Gate Bipolar Transistor), FRD (Fast Recovery Diode), IPM (Intelligent Power Module), etc. The type of the first passive device 11 is not limited, and may include, for example, capacitors (e.g., PFC inductors), inductors (e.g., bus capacitors), etc.

[0042] For example, the outdoor unit 1000 of the air conditioner has a compressor cavity 1000a and a fan cavity 1000b. The outdoor unit 1000 includes a partition 200 separating the compressor cavity 1000a and the fan cavity 1000b. A vent is formed on the partition 200 connecting the fan cavity 1000b and the compressor cavity 1000a, and the vent serves as a ventilation path 201. This simplifies the manufacturing of the ventilation path 201. However, this application is not limited to this. For example, a pipe connecting the compressor cavity 1000a and the fan cavity 1000b can also be provided to define the ventilation path.

[0043] The compressor 300 and the electronic control component 100 are both located within the compressor cavity 1000a, while the fan is located within the fan cavity 1000b. The fan cavity 1000b has good airflow and efficient heat dissipation. A partition 200 separates the compressor cavity 1000a and the fan cavity 1000b, reducing interference from the fan cavity 1000b to the compressor cavity 1000a and improving the operational stability of the compressor 300 and electronic control component 100 located within the compressor cavity 1000a. Furthermore, the partition 200 includes a ventilation path 201 connecting the fan cavity 1000b and the compressor cavity 1000a. When the fan rotates, it draws airflow from the compressor cavity 1000a into the fan cavity 1000b, creating airflow within the compressor cavity 1000a and accelerating heat dissipation for the electronic control component 100 located within the compressor cavity 1000a.

[0044] For example, when the first passive device 11 is directly exposed in the compressor cavity 1000a, when the fan rotates and draws the airflow in the compressor cavity 1000a into the fan cavity 1000b, the first passive device 11 can be cooled by air, thereby reducing the temperature of the first passive device 11.

[0045] For example, when the first passive device 11 is located in a heat dissipation duct connected to the compressor cavity 1000a, when the fan rotates and draws the airflow from the compressor cavity 1000a into the fan cavity 1000b, the heat dissipation duct can also carry airflow to cool the first passive device 11. The heat dissipation duct can be defined by the housing of the electronic control component 100. In this case, the circuit board 1 can be located inside the housing and not directly exposed to the compressor cavity 1000a.

[0046] For example, the refrigerant radiator 2 is connected to the refrigerant circulation loop 400 where the compressor 300 is located. The refrigerant radiator 2 is disposed on the side of the first power device 12 away from the circuit board 1 and cooperates with the first power device 12 for heat exchange. For example, the first power device 12 is located on the rear side of the circuit board 1, and the refrigerant radiator 2 is located on the rear side of the first power device 12. The refrigerant radiator 2 is in direct contact with the first power device 12 or indirect contact through thermally conductive adhesive, etc., to achieve heat exchange.

[0047] The electronic control component 100 of this embodiment of the invention, by separately arranging the first passive device 11 and the first power device 12 on both sides of the thickness direction Z of the circuit board 1, facilitates full utilization of space, facilitates the arrangement of air cooling and refrigerant cooling, and improves the heat dissipation effect. Furthermore, placing the first power device 12 and the first passive device 11 on both sides of the thickness direction Z of the circuit board 1 reduces thermal interference between the first power device 12 and the first passive device 11, thereby improving the heat dissipation effect of the first passive device 11 and the first power device 12.

[0048] Among them, the refrigerant circulation loop 400 refers to the refrigerant circulation loop of the air conditioner to which the outdoor unit 1000 belongs. It can be a single cooling cycle system or a heat pump cycle system. The high-temperature and high-pressure refrigerant flowing out of the compressor 300 outlet flows to the condenser. The condenser cools the refrigerant, and then the pressure is reduced by the throttling element. The low-temperature and low-pressure refrigerant is then sent to the evaporator. The refrigerant absorbs heat in the evaporator and flows back to the compressor 300, which is a complete refrigerant circulation path.

[0049] The refrigerant radiator 2 bypasses the refrigerant circulation loop 400 to supply low-temperature refrigerant, which is then delivered to the refrigerant radiator 2, absorbs heat, and flows back into the refrigerant circulation loop 400. This allows for a continuous supply of low-temperature refrigerant to dissipate heat from the first power device 12, thereby improving the heat dissipation efficiency of the first power device 12. Furthermore, the refrigerant in the refrigerant radiator 2 is directly connected to the existing refrigerant circulation loop 400 of the outdoor unit 1000, eliminating the need for a separate refrigerant circulation system. This reduces manufacturing costs and simplifies installation.

[0050] Due to the design of the outdoor unit 1000 of this utility model, a flowing airflow can be generated within the compressor cavity 1000a, exposing the first passive device 11 to the compressor cavity 1000a or placing it in a heat dissipation duct communicating with the compressor cavity 1000a. After exchanging heat with the first passive device 11, the flowing airflow flows to the fan cavity 1000b, carrying away the heat and thus meeting the heat dissipation requirements of the first passive device 11. As a result, the heat dissipation effect of both the first power device 12 and the first passive device 11 is good, which can improve the working reliability of the electronic control component 100.

[0051] According to the embodiment of the present utility model, the outdoor unit 1000 of the air conditioner has a first passive device 11 and a first power device 12 arranged separately on both sides of the thickness direction Z of the circuit board 1. The first power device 12 dissipates heat through the refrigerant radiator 2, and the first passive device 11 is cooled by air. The heat dissipation effect of the first power device 12 and the first passive device 11 is good, which can improve the working reliability of the electronic control component 100.

[0052] In some embodiments of this utility model, such as Figure 2 As shown, at least a portion of the refrigerant radiator 2 is exposed within the compressor cavity 1000a. It is understood that the temperature of the refrigerant radiator 2 is lower than the ambient temperature within the compressor cavity 1000a, even after heat exchange with the first power device 12.

[0053] Therefore, in this embodiment of the invention, the refrigerant radiator 2 is at least partially exposed within the compressor cavity 1000a, thereby cooling the environment within the compressor cavity 1000a without affecting heat exchange with the first power device 12. Furthermore, the first passive device 11 is exposed within the compressor cavity 1000a or located in a heat dissipation duct communicating with the compressor cavity 1000a. The cooler air near the refrigerant radiator 2 can flow to the first side 1a of the circuit board 1, and this low-temperature airflow can dissipate heat from the first passive device 11. This allows for the utilization of the cooling capacity of the refrigerant radiator 2, improving the heat dissipation effect on the first passive device 11.

[0054] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the circuit board 1 is vertically positioned, with the first side 1a being the front side of the circuit board 1 and the second side 1b being the rear side of the circuit board 1. Therefore, the first passive component 11 can be positioned facing forward, i.e., towards the customer-facing side of the outdoor unit 1000, i.e., the air outlet side of the fan, thus facilitating maintenance of the first passive component 11 and providing the user with a larger operating space on the front side.

[0055] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, circuit board 1 is vertically positioned, with the first side 1a being the front side of circuit board 1 and the second side 1b being the rear side. At least a portion of the refrigerant radiator 2 and the first passive component 11 are exposed in the compressor cavity 1000a. Therefore, by opening the front panel of the outdoor unit 1000, the front-facing first passive component 11 can be inspected and repaired. Furthermore, the cooler air near the refrigerant radiator 2 can flow forward to the front of circuit board 1, and this low-temperature airflow can dissipate heat from the first passive component 11, thereby utilizing the cooling capacity of the refrigerant radiator 2 and improving the heat dissipation effect of the first passive component 11.

[0056] In some embodiments of this utility model, such as Figure 3 As shown, the first passive device 11 includes a first capacitor 111 and a first inductor 112. The first capacitor 111 and the first inductor 112 are spaced apart along the first direction X to form a heat dissipation channel 13 extending along the second direction Y between the first capacitor 111 and the first inductor 112. The second direction Y is perpendicular to the first direction X.

[0057] The first capacitor 111 and the first inductor 112 are spaced apart along the first direction X. The first capacitor 111 and the first inductor 112 are relatively large. The first capacitor 111 and the first inductor 112 both protrude relative to the circuit board 1 in the thickness direction Z of the circuit board 1. Thus, a relatively recessed space is formed between the first capacitor 111 and the first inductor 112, which forms a heat dissipation channel 13 for airflow.

[0058] The heat dissipation duct 13 extends along the second direction Y, which is perpendicular to the first direction X. Therefore, when the airflow flows along the heat dissipation duct 13, it can flow through at least half of the area of ​​the first capacitor 111 and the first inductor 112, which helps to improve the heat dissipation effect of the first capacitor 111 and the first inductor 112 and reduce the thermal influence between them.

[0059] For example, there are multiple first capacitors 111 spaced apart along the second direction Y, and multiple first inductors 112 spaced apart along the second direction Y. A heat dissipation channel 13 extending along the second direction Y is formed between the first capacitors 111 and the first inductors 112. When the airflow flows along the heat dissipation channel 13, it can flow through the multiple first capacitors 111 and the multiple first inductors 112 in sequence, making full contact with the multiple first capacitors 111 and the multiple first inductors 112, thereby improving the heat dissipation effect of the first capacitors 111 and the first inductors 112.

[0060] In some embodiments of this utility model, such as Figure 3As shown, the refrigerant radiator 2 extends along the second direction Y and is directly opposite the heat dissipation duct 13 along the thickness direction Z of the circuit board 1. One edge of the circuit board 1 in the second direction Y is the first edge 1c. The end of the refrigerant radiator 2 protruding from the first edge 1c is exposed in the compressor cavity 1000a, or the end of the refrigerant radiator 2 protruding from the first edge 1c is located in the aforementioned heat dissipation duct (i.e., the heat dissipation duct in which the first passive device 11 is located and is connected to the compressor cavity 1000a).

[0061] The refrigerant radiator 2 also extends along the second direction Y, and the refrigerant radiator 2 and the heat dissipation duct 13 are aligned along the thickness direction Z of the circuit board 1. The refrigerant radiator 2 cooperates with the first power device 12 for heat exchange. The first power device 12 is positioned close to the circuit board 1 relative to the refrigerant radiator 2, with the refrigerant radiator 2 and the heat dissipation duct 13 aligned along the thickness direction Z of the circuit board 1. In other words, the first power device 12 and the heat dissipation duct 13 are aligned along the thickness direction Z of the circuit board 1. Figure 3 As shown, the first power device 12, which is located on the other side of the thickness direction Z of the circuit board 1, is represented by a dashed line. That is, the first power device 12 and the first passive device 11 are staggered along the first direction X. This arrangement can reduce the installation impact of the first power device 12 and the first passive device 11 and improve the installation reliability of the first power device 12 and the first passive device 11.

[0062] Since the end of the refrigerant radiator 2 protruding from the first edge 1c is exposed in the compressor cavity 1000a, or the end of the refrigerant radiator 2 protruding from the first edge 1c is located in the aforementioned heat dissipation duct, the air cooled by the end of the refrigerant radiator 2 protruding from the first edge 1c can flow to the heat dissipation duct 13 on the first side 1a, thereby using the cooler airflow in the heat dissipation duct 13 to dissipate heat from the first capacitor 111 and the first inductor 112, thus improving the heat dissipation effect of the first passive device 11.

[0063] By forming a heat dissipation duct 13 between the first capacitor 111 and the first inductor 112, the flow path of the cooler airflow from the refrigerant radiator 2 side can be optimized, thereby enhancing the heat dissipation of the first capacitor 111 and the first inductor 112.

[0064] In some embodiments of this utility model, such as Figure 3 As shown, the refrigerant radiator 2 includes a heat-conducting plate 21 and a refrigerant pipe 22. The refrigerant pipe 22 includes a straight pipe section 221 and a bent pipe section 222. There are multiple straight pipe sections 221 arranged in parallel inside the heat-conducting plate 21. The bent pipe section 222 is located outside the heat-conducting plate 21 and is connected to the straight pipe section 221. The bent pipe section 222 protrudes from the first edge 1c.

[0065] The refrigerant radiator 2 includes a heat-conducting plate 21, which directly or indirectly contacts the first power device 12 for heat exchange. By setting the heat-conducting plate 21, the heat exchange area can be increased, which is beneficial to improving the heat dissipation efficiency of the first power device 12.

[0066] The refrigerant pipe 22 is constructed with at least one bend. The refrigerant pipe 22 includes multiple straight pipe sections 221 disposed on the heat-conducting plate 21, which can increase the heat exchange area between the refrigerant pipe 22 and the heat-conducting plate 21 and improve the heat exchange effect. The multiple straight pipe sections 221 are arranged in parallel and connected to each other by bends 222. By protruding the bends 222 from the first edge 1c, the refrigerant radiator 2 part protruding from the first edge 1c does not need to be matched with the heat-conducting plate 21, reducing the processing difficulty of the heat-conducting plate 21, and can also be used to dissipate heat from the first passive device 11.

[0067] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the first edge 1c is the upper edge 1c1 of the circuit board 1, and the upper end of the refrigerant radiator 2 protrudes upward from the upper edge 1c1 of the circuit board 1.

[0068] It is understandable that cold air, being denser, will naturally flow downwards. By protruding the upper end of the refrigerant radiator 2 upwards to the upper edge 1c1 of the circuit board 1, the air near the upper end of the refrigerant radiator 2 will naturally settle after heat exchange, making it easier to flow to the side where the first passive device 11 is located, which is beneficial to improving the heat dissipation effect on the first passive device 11.

[0069] In some embodiments of this utility model, such as Figure 4 As shown, the refrigerant radiator 2 includes a heat-conducting plate 21 and a refrigerant pipe 22. The heat-conducting plate 21 includes a heat-conducting substrate 211 and a heat-dissipating cover plate 212. The heat-conducting substrate 211 is located between the circuit board 1 and the heat-dissipating cover plate 212, and the refrigerant pipe 22 is sandwiched between the heat-conducting substrate 211 and the heat-dissipating cover plate 212. The electronic control component 100 includes a base 3, which is located on the second side 1b of the circuit board 1. The circuit board 1 is mounted on the base 3. The heat-conducting substrate 211 passes through the base 3 and cooperates with the first power device 12 for heat exchange. The refrigerant pipe 22 and the heat-dissipating cover plate 212 are both located on the side of the base 3 away from the circuit board 1.

[0070] The refrigerant radiator 2 includes a refrigerant pipe 22 and a heat-conducting plate 21. The refrigerant flows in the refrigerant pipe 22 to provide cooling. The heat-conducting plate 21 directly or indirectly contacts the first power device 12 for heat exchange. By setting the heat-conducting plate 21, the heat exchange area can be increased, which is beneficial to improving the heat dissipation efficiency of the first power device 12.

[0071] The heat-conducting plate 21 includes a heat-conducting substrate 211 and a heat dissipation cover plate 212. The heat-conducting substrate 211 is used for heat exchange with the first power device 12. The heat dissipation cover plate 212 is covered on the side of the refrigerant pipe 22 away from the circuit board 1. The heat-conducting substrate 211 and the heat dissipation cover plate 212 sandwich the refrigerant pipe 22, which can improve the installation stability of the refrigerant pipe 22 and protect the refrigerant pipe 22, reducing the occurrence of refrigerant leakage caused by impact damage to the refrigerant pipe 22.

[0072] The electronic control component 100 also includes a base 3. The circuit board 1 is mounted on the base 3. The base 3 can support the circuit board 1 and improve the stability of the circuit board 1. Since the first power device 12 dissipates heat through the refrigerant radiator 2, it is less dependent on airflow for heat dissipation. Therefore, placing the base 3 on the side where the first power device 12 is located will not affect the heat dissipation of the first power device 12.

[0073] A thermally conductive substrate 211 is mounted on the base 3, which also supports the arrangement of the refrigerant heat sink 2, improving the stability of the refrigerant heat sink 2 relative to the first power device 12. The refrigerant pipe 22 and the heat sink cover 212 are both located on the side of the base 3 away from the circuit board 1. In the thickness direction Z of the circuit board 1, with the base 3 as a reference, the side closer to the circuit board 1 is the inner side of the base 3, while the refrigerant pipe 22 and the heat sink cover 212 are both located on the outer side of the base 3. This design reduces the possibility of refrigerant flowing into the inner side of the base 3 when refrigerant leakage occurs in the refrigerant pipe 22, thereby improving the operational reliability of the circuit board 1.

[0074] For example, the base 3 is located on the rear side of the circuit board 1, the refrigerant heat sink 2 is located on the rear side of the circuit board 1, the heat-conducting substrate 211 passes through the base 3 and cooperates with the first power device 12 for heat exchange, and the refrigerant pipe 22 and the heat sink cover 212 are both located on the rear side of the base 3, so as to avoid the refrigerant pipe 22 leaking and coming into contact with the circuit board 1 and causing danger.

[0075] In some embodiments of this utility model, such as Figure 2 As shown, the first side 1a of the circuit board 1 is also provided with a second power device 14, and the electronic control component 100 also includes a wind-cooled heat sink 4. The wind-cooled heat sink 4 is disposed on the side of the second power device 14 away from the circuit board 1 and is heat exchanged with the second power device 14. The wind-cooled heat sink 4 is exposed in the compressor cavity 1000a or located in the aforementioned heat dissipation duct (i.e., the heat dissipation duct where the first passive device 11 is located and is connected to the compressor cavity 1000a).

[0076] The air-cooled heat sink 4 and the second power device 14 cooperate in heat exchange. The air-cooled heat sink 4 and the second power device 14 are in direct contact or indirect contact through thermally conductive adhesive, which can improve the heat exchange efficiency of the second power device 14 and transfer the heat of the second power device 14 to the air-cooled heat sink 4. The air-cooled heat sink 4 has a large heat exchange area, which can improve the heat dissipation efficiency of the air-cooled heat sink 4. Since a flowing airflow can be generated in the compressor cavity 1000a, the air-cooled heat sink 4 is exposed in the compressor cavity 1000a or located in the aforementioned heat dissipation air duct (i.e., the heat dissipation air duct where the first passive device 11 is located and connected to the compressor cavity 1000a). After the flowing airflow exchanges heat with the air-cooled heat sink 4, it flows to the fan cavity 1000b and carries away the heat, thereby meeting the heat dissipation requirements of the second power device 14.

[0077] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the circuit board 1 includes a second edge 1d, and the air-cooled heat sink 4 is disposed adjacent to the second edge 1d (that is, the air-cooled heat sink 4 is close to the second edge 1d, the distance between the two is less than the width of the air-cooled heat sink 4, and no other components are disposed between the two). The air-cooled heat sink 4 includes a plurality of heat dissipation fins 41, and a first current flow gap 42 is defined between two adjacent heat dissipation fins 41. The extension direction of the first current flow gap 42 intersects the extension direction of the second edge 1d at an acute angle or a right angle.

[0078] The air-cooled heat sink 4 is located near the edge of the circuit board 1, where airflow is more likely to pass through, which helps to improve the heat dissipation efficiency of the air-cooled heat sink 4.

[0079] The air-cooled radiator 4 includes multiple heat dissipation fins 41, and a first flow gap 42 is defined between two adjacent heat dissipation fins 41, which can increase the heat exchange area of ​​the air-cooled radiator 4 and improve the heat dissipation efficiency of the air-cooled radiator 4.

[0080] like Figure 3 As shown, the extension direction of the extension line L1 of the first flow gap 42 is the same as the extension direction of the first flow gap 42, the extension direction of the extension line L2 of the second edge 1d is the same as the extension direction of the second edge 1d, and the included angle α between the extension line L1 of the first flow gap 42 and the extension line L2 of the second edge 1d is an acute angle or a right angle.

[0081] By intersecting the first flow gap 42 at an acute angle with the second edge 1d or perpendicular to the second edge 1d, the heat dissipation fins 41 obstruct the airflow, making it easier for the airflow to flow into the first flow gap 42, which is beneficial to improving the heat dissipation efficiency of the air-cooled heat sink 4.

[0082] In some embodiments of this utility model, such as Figure 3As shown, the first passive device 11 includes a first capacitor 111 and a first inductor 112. The first capacitor 111 and the first inductor 112 are spaced apart along the first direction X to form a heat dissipation channel 13 extending along the second direction Y between the first capacitor 111 and the first inductor 112. The second direction Y is perpendicular to the first direction X. The air-cooled heat sink 4 is offset from the heat dissipation channel 13 along the first direction X.

[0083] The first capacitor 111 and the first inductor 112 are spaced apart along the first direction X. The first capacitor 111 and the first inductor 112 are relatively large. The first capacitor 111 and the first inductor 112 both protrude relative to the circuit board 1 in the thickness direction Z of the circuit board 1. Thus, a relatively recessed space is formed between the first capacitor 111 and the first inductor 112, which forms a heat dissipation channel 13 for airflow.

[0084] By forming a heat dissipation channel 13 between the first capacitor 111 and the first inductor 112, the flow path of the airflow through the circuit board 1 can be optimized. The airflow will be guided to flow along the heat dissipation channel 13, thereby improving the heat dissipation effect on the first capacitor 111 and the first inductor 112.

[0085] The air-cooled radiator 4 and the heat dissipation duct 13 are staggered in the first direction X, which can prevent the air-cooled radiator 4 from blocking the airflow in the heat dissipation duct 13 and facilitate the airflow in the heat dissipation duct 13.

[0086] For example, one side edge of the circuit board 1 in the second direction Y is a second edge 1d, and the air-cooled heat sink 4 is disposed adjacent to the second edge 1d. The air-cooled heat sink 4 includes a plurality of heat dissipation fins 41 arranged in the first direction X, and a first flow gap 42 is defined between two adjacent heat dissipation fins 41. The first flow gap 42 extends in the second direction Y.

[0087] The air-cooled radiator 4 includes multiple heat dissipation fins 41, with a first flow gap 42 defined between adjacent heat dissipation fins 41. This increases the heat exchange area of ​​the air-cooled radiator 4 and improves its heat dissipation efficiency. The extension direction of the first flow gap 42 is consistent with the extension direction of the heat dissipation duct 13. Airflow along the heat dissipation duct 13 can easily flow into the first flow gap 42, increasing airflow and thus improving the heat dissipation efficiency of the air-cooled radiator 4.

[0088] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the other side edge of the circuit board 1 in the second direction Y is the first edge 1c. The two sides of the space in the thickness direction Z of the circuit board 1 are connected at the first edge 1c, or connected at the first edge 1c and the second edge 1d respectively. The refrigerant heat sink 2 extends along the second direction Y and is directly opposite the heat dissipation air duct 13 along the thickness direction Z of the circuit board 1.

[0089] By connecting the two sides of the thickness direction Z of the circuit board 1 at the first edge 1c, or by connecting the two sides of the thickness direction Z of the circuit board 1 at both the first edge 1c and the second edge 1d, the cooler air near the refrigerant radiator 2 can flow to the first side 1a of the circuit board 1. The low-temperature airflow can dissipate heat for the first passive device 11 and the second power device 14 located on the first side 1a, thereby utilizing the cooling capacity of the refrigerant radiator 2 and improving the heat dissipation effect on the first passive device 11 and the second power device 14.

[0090] The refrigerant heat sink 2 also extends along the second direction Y, and the refrigerant heat sink 2 and the heat dissipation duct 13 are directly opposite each other along the thickness direction Z of the circuit board 1. Then, the air that has been cooled and flows along the refrigerant heat sink 2 can easily flow from the first edge 1c or the second edge 1d in the second direction Y to the first side 1a, and the airflow can easily flow into the heat dissipation duct 13 along the second direction Y, thereby using the lower temperature airflow to dissipate heat from the first capacitor 111, the first inductor 112 and the adjacent air-cooled heat sink 4.

[0091] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the first passive device 11 includes a first inductor 112. The first inductor 112 is disposed adjacent to the third edge 1e of the circuit board 1 (that is, the first inductor 112 is close to the third edge 1e, the distance between the two is less than the width of the first inductor 112, and no other components are disposed between them). The first inductor 112 includes a magnetic core 1121 and a coil 1122 wound on the magnetic core 1121. The coil 1122 is in the form of multiple turns and a second overcurrent gap 1123 is formed between adjacent turns. The extension direction of the second overcurrent gap 1123 intersects the extension direction of the third edge 1e at an acute angle or a right angle.

[0092] like Figure 3 As shown, the extension direction of the extension line L3 of the second flow gap 1123 is the same as the extension direction of the second flow gap 1123, and the extension direction of the extension line L4 of the third edge 1e is the same as the extension direction of the third edge 1e. The included angle b between the extension line L3 of the second flow gap 1123 and the extension line L4 of the third edge 1e is an acute angle or a right angle.

[0093] By intersecting the second overcurrent gap 1123 at an acute angle with the third edge 1e or perpendicular to the second edge 1d, the coil 1122 obstructs the airflow less, making it easier for the airflow to flow to the circuit board 1 to enter the second overcurrent gap 1123, which is beneficial to improving the heat dissipation efficiency of the first inductor 112.

[0094] In some embodiments of this utility model, such as Figure 4As shown, the outdoor unit 1000 of the air conditioner includes a partition 200 spaced between the compressor chamber 1000a and the fan chamber 1000b. The third edge 1e is the edge of the circuit board 1 near the partition 200 and extends vertically. The ventilation path 201 is constructed as a vent penetrating the partition 200. Therefore, the ventilation path 201 is simple to design and easy to manufacture. Furthermore, because the first inductor 112 is positioned near the third edge 1e of the circuit board 1, the first inductor 112 is closer to the partition 200 than the first capacitor 111. The first inductor 112 is also closer to the vent, resulting in a more significant heat dissipation effect.

[0095] The first inductor 112 includes a magnetic core 1121 and a coil 1122 wound on the magnetic core 1121. The coil 1122 is in the form of multiple turns and a second current gap 1123 is formed between adjacent turns. The extension direction of the second current gap 1123 is parallel to or intersects the normal of the middle partition 200 at an acute angle.

[0096] like Figure 4 As shown, the extension direction of the extension line L3 of the second flow gap 1123 is the extension direction of the second flow gap 1123, and the extension direction of the normal line L5 of the partition plate 200 is the normal of the partition plate 200.

[0097] The first inductor 112 is positioned close to the partition 200 relative to the first capacitor 111. The airflow within the compressor cavity 1000a is drawn towards the ventilation path 201 on the partition 200. The airflow flowing towards the ventilation path 201 passes through the first inductor 112, dissipating heat from it. By positioning the extension direction of the second current-passing gap 1123 parallel to or intersecting the normal of the partition 200 at an acute angle, the coil 1122 provides less obstruction to the airflow, facilitating the flow of air towards the circuit board 1 into the second current-passing gap 1123, thus improving the heat dissipation efficiency of the first inductor 112.

[0098] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the partition 200 is vertically arranged, and the ventilation path 201 (i.e., the ventilation opening) and the first inductor 112 are arranged opposite each other in the horizontal direction.

[0099] The airflow in the compressor cavity 1000a is drawn to the ventilation path 201 on the partition plate 200. The ventilation path 201 is arranged laterally opposite to the first inductor 112, which can increase the airflow through the first inductor 112 and improve the heat dissipation efficiency of the first inductor 112.

[0100] In some embodiments of this utility model, such as Figure 2As shown, there are multiple ventilation openings arranged along the array. The ventilation area of ​​the ventilation path 201 is large, which can increase the heat dissipation airflow and is beneficial to the heat dissipation efficiency of the first passive device 11 and the second power device 14 on the first side 1a.

[0101] In some embodiments of this utility model, the compressor chamber 1000a is a closed chamber except for the ventilation path 201.

[0102] It is worth noting that the compressor cavity 1000a is a closed chamber, meaning that there is no ventilation area connecting the compressor cavity 1000a to the outside of the compressor cavity 1000a (such as the external environment of the outdoor unit 1000 of the air conditioner). However, the compressor cavity 1000a can still allow airflow to enter the compressor cavity 1000a through the assembly gap between the structural components forming the compressor cavity 1000a, thereby forming a flowing airflow to dissipate heat from the first passive device 11 on the first side 1a.

[0103] By setting the compressor chamber 1000a as a sealed chamber, the electrical control component 100 and the compressor 300 installed in the compressor chamber 1000a can be protected, the impact of external pollutants, such as rainwater and dust, on the electrical control component 100 can be reduced, and the working reliability of the electrical control component 100 can be improved.

[0104] A specific embodiment of the outdoor unit 1000 of the air conditioner of this utility model is described below with reference to the accompanying drawings.

[0105] The outdoor unit 1000 of the air conditioner includes a compressor 300, a fan, a heat exchanger, a partition 200, an electrical control component 100, and a refrigerant system pipe connecting the compressor 300 and the outdoor heat exchanger. The compressor 300 drives the refrigerant to flow in the refrigerant system pipe; the fan drives the airflow to flow quickly through the outdoor heat exchanger, enhancing the heat exchange between the outdoor heat exchanger and the air; the refrigerant system pipe connects the compressor 300 and the outdoor heat exchanger, and carries the refrigerant to flow within it; the partition 200 separates the compressor 300 and the fan, forming a compressor chamber 1000a and a fan chamber 1000b. The partition 200 is provided with a ventilation path 201 to connect the compressor chamber 1000a and the fan chamber 1000b, allowing airflow from the compressor chamber 1000a to the fan chamber 1000b; the electrical control component 100 is located in the compressor chamber 1000a and is used to drive the compressor 300 and the fan. The electrical control component 100 includes a circuit board 1 and components located on the circuit board 1.

[0106] The base 3 supports the circuit board 1, which includes components such as a PFC (Power Factor Correction) inductor, bus capacitor, rectifier bridge, and inverter. One or more components, including the rectifier bridge, IGBT (Insulated Gate Bipolar Transistor), FRD (Fast Recovery Diode), and IPM (Intelligent Power Module), are cooled by a refrigerant heatsink 2 located on the bottom surface of the circuit board 1. The PFC inductor and bus capacitor are located on the top surface of the circuit board 1. The PFC inductor and bus capacitor are positioned on either side of the mirror image of the refrigerant heatsink 2 on the top surface of the circuit board 1. Furthermore, there are no tall components placed in the mirror image area of ​​the refrigerant heatsink 2 on the top surface of the circuit board 1, facilitating airflow.

[0107] The refrigerant radiator 2 is located on the bottom surface of the circuit board 1, and the bent part extends out of the area of ​​the circuit board 1, so that the airflow can pass through the refrigerant ring from the bottom surface of the circuit board 1 and dissipate heat to the top air-cooled components.

[0108] The above-mentioned heat dissipation method effectively improves the heat dissipation effect of the electronic control component 100, which not only enhances the high-temperature operation capability of the outdoor unit 1000 of the air conditioner, but also reduces the failure rate of the components and improves the reliability of the product.

[0109] The following is a reference appendix. Figures 1-4 The electronic control component 100 of the second aspect embodiment of the present invention is described.

[0110] The electronic control component 100 includes a circuit board 1 and a refrigerant heat sink 2. The two sides of the circuit board 1 in the thickness direction Z are a first side 1a and a second side 1b, respectively. The first side 1a of the circuit board 1 is provided with a first passive device 11, and the second side 1b of the circuit board 1 is provided with a first power device 12. The first passive device 11 includes a first capacitor 111 and a first inductor 112. The first capacitor 111 and the first inductor 112 are spaced apart along the first direction X to form a heat dissipation channel 13 extending along the second direction Y between the first capacitor 111 and the first inductor 112. The second direction Y is perpendicular to the first direction X. One edge of the circuit board 1 in the second direction Y is a first edge 1c. The refrigerant heat sink 2 is disposed on the side of the first power device 12 away from the circuit board 1 and is heat exchanged with the first power device 12. The refrigerant heat sink 2 extends along the second direction Y and is directly opposite the heat dissipation channel 13 in the thickness direction Z of the circuit board 1. One end of the refrigerant heat sink 2 protrudes from the first edge 1c.

[0111] The first power device 12 dissipates heat through the refrigerant radiator 2, and the airflow cooled by the refrigerant radiator 2 can also flow from the first edge 1c to the first passive device 11 on the first side 1a, thereby making use of the cooling capacity of the refrigerant radiator 2, which is beneficial to improving the heat dissipation effect of the first passive device 11.

[0112] By forming a heat dissipation airflow duct 13 between the first capacitor 111 and the first inductor 112, the flow path of the airflow with lower temperature from the refrigerant heat sink 2 side can be optimized, thereby enhancing the heat dissipation of the first passive device 11 and making better use of the cold energy of the refrigerant heat sink 2. The heat dissipation effect of the first power device 12 and the first passive device 11 is better, which can improve the working reliability of the electronic control component 100.

[0113] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0114] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0115] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0116] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0117] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0118] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An outdoor unit for an air conditioner, characterized in that, The outdoor unit of the air conditioner has a compressor cavity and a fan cavity. The outdoor unit includes a ventilation path connecting the fan cavity and the compressor cavity. An electronic control component is installed inside the compressor cavity. The electronic control component includes: The circuit board has a first side and a second side on its two sides in the thickness direction. The first side of the circuit board is provided with a first passive device, and the second side of the circuit board is provided with a first power device. The first passive device is exposed in the compressor cavity or located in a heat dissipation duct communicating with the compressor cavity. A refrigerant heat sink is disposed on the side of the first power device away from the circuit board and is in heat exchange cooperation with the first power device.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, The first passive device includes a first capacitor and a first inductor, which are spaced apart along a first direction to form a heat dissipation channel extending along a second direction between the first capacitor and the first inductor, the second direction being perpendicular to the first direction.

3. The outdoor unit of the air conditioner according to claim 2, characterized in that, The refrigerant radiator extends along the second direction and is directly opposite the heat dissipation duct along the thickness direction of the circuit board. One edge of the circuit board in the second direction is the first edge. One end of the refrigerant radiator protrudes from the first edge. The end of the refrigerant radiator protruding from the first edge is exposed in the compressor cavity or located in the heat dissipation duct.

4. The outdoor unit of the air conditioner according to claim 3, characterized in that, The refrigerant radiator includes a heat-conducting plate and refrigerant pipes. The refrigerant pipes include straight pipe sections and bent pipe sections. There are multiple straight pipe sections arranged parallel to each other inside the heat-conducting plate. The bent pipe sections are located outside the heat-conducting plate and connected to the straight pipe sections. The bent pipe sections protrude from the first edge.

5. The outdoor unit of the air conditioner according to claim 3, characterized in that, The first edge is the upper edge of the circuit board, and the upper end of the refrigerant heat sink protrudes upward from the upper edge of the circuit board.

6. The outdoor unit of the air conditioner according to claim 1, characterized in that, The circuit board is placed vertically, with the first side being the front side of the circuit board and the second side being the rear side of the circuit board; and / or, at least a portion of the refrigerant radiator and the first passive device are exposed in the compressor cavity.

7. The outdoor unit of the air conditioner according to claim 1, characterized in that, The refrigerant radiator includes a heat-conducting plate and a refrigerant pipe. The heat-conducting plate includes a heat-conducting substrate and a heat-dissipating cover plate. The heat-conducting substrate is located between the circuit board and the heat-dissipating cover plate, and the refrigerant pipe is sandwiched between the heat-conducting substrate and the heat-dissipating cover plate. The electronic control component includes a base located on the second side of the circuit board. The circuit board is mounted on the base. The heat-conducting substrate passes through the base and is in heat exchange cooperation with the first power device. The refrigerant pipe and the heat dissipation cover are both located on the side of the base away from the circuit board.

8. The outdoor unit of the air conditioner according to claim 1, characterized in that, The first side of the circuit board is also provided with a second power device, and the electronic control component also includes a wind-cooled heat sink. The wind-cooled heat sink is disposed on the side of the second power device away from the circuit board and is heat exchanged with the second power device. The wind-cooled heat sink is exposed in the compressor cavity or located in the heat dissipation duct.

9. The outdoor unit of the air conditioner according to claim 8, characterized in that, The circuit board includes a second edge, and the air-cooled heat sink is disposed adjacent to the second edge. The air-cooled heat sink includes a plurality of heat dissipation fins, and a first flow gap is defined between two adjacent heat dissipation fins. The extension direction of the first flow gap intersects the extension direction of the second edge at an acute angle or a right angle.

10. The outdoor unit of the air conditioner according to claim 8 or 9, characterized in that, The first passive device includes a first capacitor and a first inductor, which are spaced apart along a first direction to form a heat dissipation channel extending along a second direction between the first capacitor and the first inductor. The second direction is perpendicular to the first direction, and the air-cooled heat sink is offset from the heat dissipation channel along the first direction.

11. The outdoor unit of the air conditioner according to claim 1, characterized in that, The first passive device includes a first inductor disposed adjacent to the third edge of the circuit board. The first inductor includes a magnetic core and a coil wound on the magnetic core. The coil is in the form of multiple turns and a second current gap is formed between adjacent turns. The extension direction of the second current gap intersects the extension direction of the third edge at an acute angle or a right angle.

12. The outdoor unit of the air conditioner according to claim 11, characterized in that, The outdoor unit of the air conditioner includes a partition plate spaced between the compressor cavity and the fan cavity, the third edge is the edge of the circuit board near the partition plate and extends in the vertical direction, and the ventilation path is configured as a vent that penetrates the partition plate.

13. The outdoor unit of the air conditioner according to claim 12, characterized in that, The vent is positioned laterally opposite to the first inductor.

14. The outdoor unit of the air conditioner according to claim 1, characterized in that, The compressor chamber is a closed chamber except for the ventilation path.

15. An electronic control component, characterized in that, include: A circuit board, wherein the two sides of the circuit board in the thickness direction are respectively a first side and a second side, the first side of the circuit board is provided with a first passive device, and the second side of the circuit board is provided with a first power device. The first passive device includes a first capacitor and a first inductor. The first capacitor and the first inductor are spaced apart along a first direction to form a heat dissipation channel extending along a second direction between the first capacitor and the first inductor. The second direction is perpendicular to the first direction, and one edge of the circuit board in the second direction is the first edge. A refrigerant heat sink is disposed on the side of the first power device away from the circuit board and is in heat exchange cooperation with the first power device. The refrigerant heat sink extends along the second direction and is directly opposite the heat dissipation air duct along the thickness direction of the circuit board. One end of the refrigerant heat sink protrudes from the first edge.

Images