Outdoor unit of air conditioner

Abstract

The utility model discloses an air conditioner outdoor unit which comprises a shell, a compressor, a heat exchanger, a heat exchange fan and an electric control box, the electric control box comprises a box body, an electric control board and a radiator, and the radiator is arranged in the box body and connected with the electric control board. The electric control board comprises a board body, and the two opposite sides, in the thickness direction, of the board body are the first side and the second side; the plurality of first components are low-heating devices, and the plurality of first components are arranged on the first side and are connected with the board body; the second components are high heating devices, the second components are arranged on the second side and connected with the board body, and the radiator is arranged on the second side and connected with the second components. According to the outdoor unit of the air conditioner, the radiator can be used for conducting centralized heat dissipation on the high-heating devices on the electric control board, then the heat dissipation efficiency of the electric control board can be improved, and the waterproof, dustproof and insect-proof capacity of the electric control board can be improved.

Description

Technical Field

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

[0002] In related technologies, the outdoor unit of an air conditioner typically includes a compressor, a heat exchanger, a heat exchange fan, and an electrical control box. The electrical control board in the electrical control box is electrically connected to the compressor and the heat exchange fan respectively to control the operation of the compressor and the heat exchange fan.

[0003] Furthermore, the control box is equipped with a heat sink, which can be connected to the control board to dissipate heat from the components on the control board, preventing the control board from overheating and ensuring that the control board can work normally.

[0004] However, due to the complex placement of components on the control board in related technologies, a single heat sink cannot effectively dissipate heat for multiple high-heat-generating components simultaneously, resulting in poor heat dissipation efficiency of the heat sink for the control board and poor heat dissipation performance of the control box. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide an outdoor unit for an air conditioner that utilizes a radiator to centrally dissipate heat from high-heat-generating components on the electronic control board, thereby improving the heat dissipation efficiency of the electronic control board and enhancing its waterproof, dustproof, and insect-proof capabilities.

[0006] To achieve the above objectives, an outdoor unit of an air conditioner is provided according to an embodiment of the present invention, comprising: a housing, wherein the housing is provided with an air inlet and an air outlet; a compressor, wherein the compressor is disposed within the housing; a heat exchanger, wherein the heat exchanger is disposed within the housing; a heat exchange fan, wherein the heat exchange fan is disposed within the housing, wherein the heat exchange fan drives air to enter the housing from the air inlet when operating, and the air is discharged from the housing through the air outlet after exchanging heat with the heat exchanger; and an electrical control box, wherein the electrical control box is disposed within the housing, and the electrical control box includes: a housing body, wherein the housing body is disposed within the housing; and an electrical control board, wherein the electrical control board is disposed within the housing body, and the electrical control board is disposed within the housing body. The control board is electrically connected to the compressor and the heat exchange fan respectively; the electrical control box further includes: a radiator, which is disposed in the box and connected to the electrical control board to dissipate heat from the electrical control board; wherein, the electrical control board includes: a board body, with two opposite sides in the thickness direction of the board body being a first side and a second side; a plurality of first components, which are low-heat-generating components, which are disposed on the first side and connected to the board body; a plurality of second components, which are high-heat-generating components, which are disposed on the second side and connected to the board body, and the radiator is disposed on the second side and connected to the plurality of second components.

[0007] The above technical solution has the following advantages or beneficial effects: multiple low-heat-generating devices can be located on the first side and multiple high-heat-generating devices can be located on the second side. This allows multiple high-heat-generating devices to be concentrated on the same side of the board, so that the heat sink can simultaneously contact and connect with multiple concentrated second-side components. This enables the heat sink to directly dissipate heat from multiple components with high heat generation, which helps improve the heat dissipation efficiency of the heat sink for the control board, avoids the temperature of the control board from becoming too high, and makes the operation of the control board more stable and reliable. In addition, the heat sink and the board separate the space inside the control box, which can improve the waterproof and dustproof capabilities of the control board and facilitate maintenance and other operations of the control board from the top area of ​​the control box.

[0008] According to some embodiments of the present invention, the box body has a bottom plate, the second side of the plate body faces the bottom plate, and the heat sink is supported between the second side and the bottom plate.

[0009] The above technical solution has the following advantages or beneficial effects: the radiator is supported between the second side and the base plate, which not only improves the waterproof and dustproof capabilities of the control board inside the control box, but also facilitates maintenance and other operations on the control board from the top area of ​​the control box, thus improving the convenience of operation and maintenance of the control board.

[0010] According to some embodiments of the present invention, a plurality of second components are disposed adjacent to the middle portion of the length direction and / or width direction of the plate; and / or, the heat sink is adjacent to the middle portion of the length direction and / or width direction of the plate.

[0011] The above technical solution has the following advantages or beneficial effects: multiple first components and heat sinks can be placed in the middle of the board, which facilitates the layout of multiple first components and the design of the heat dissipation airflow of the heat sink.

[0012] According to some embodiments of the present invention, the plate has a first region and a second region, and a plurality of the first components include high-voltage components and low-voltage components. The high-voltage components are disposed in the first region and the low-voltage components are disposed in the second region, and the second components are disposed in the first region.

[0013] The above technical solution has the following advantages or beneficial effects: high-voltage components and low-voltage components can be set up in separate areas, which can reduce signal interference between high and low voltage, strengthen the circuit's anti-interference ability, and improve electromagnetic compatibility. This is conducive to improving the stability and reliability of the control board, and also facilitates the overall wiring layout of the control board. It can effectively solve problems such as the difficulty in the layout and wiring of multiple components, poor heat dissipation of power devices, and mutual interference between high and low voltage wiring.

[0014] According to some embodiments of the present invention, the plurality of second components include a plurality of FRD units, a plurality of IGBT units, and a plurality of rectifier bridges. The FRD units and the IGBT units are arranged at intervals along a first direction, and the FRD units and the IGBT units are respectively arranged at intervals with the rectifier bridges along a second direction. The plurality of FRD units, the plurality of IGBT units, and the plurality of rectifier bridges are all connected to the heat sink. The plurality of first components include a plurality of PFC inductors, and the plurality of PFC inductors are respectively adjacent to the plurality of FRD units.

[0015] The above technical solution has the following advantages or beneficial effects: it can quickly cool down multiple FRD units, multiple IGBT units and multiple rectifier bridges through heat sinks, thereby reducing the temperature of the control board. Furthermore, by placing multiple inductors close to multiple FRD units, the PFC inductors and power components can be arranged closely together, which helps to reduce high-frequency current loops.

[0016] According to some embodiments of the present invention, the plurality of second components further include a press IPM unit, the press IPM unit being connected to the heat sink, and the press IPM unit and the IGBT unit being arranged along the first direction; and the plurality of first components include a press connection socket, the press connection socket being disposed on the first side and electrically connected to the press IPM unit through the board body.

[0017] The above technical solution has the following advantages or beneficial effects: the heat sink can simultaneously cool the FRD unit, IGBT unit, rectifier bridge and compressor IPM unit, and the compressor IPM unit will not interfere with the position of other second components. Furthermore, the compressor connection socket and the compressor IPM unit can be close to each other to facilitate electrical connection between the compressor connection socket and the compressor IPM unit.

[0018] According to some embodiments of the present invention, the plurality of first components further include: a fan IPM unit, a fan MCU unit, and a fan connection socket, wherein the fan IPM unit, the fan MCU unit, and the fan connection socket are arranged at intervals; an electrolytic capacitor bank, wherein the electrolytic capacitor bank includes a plurality of electrolytic capacitors, wherein the electrolytic capacitor bank is respectively adjacent to the FRD unit, the IGBT unit, the PFC inductor, the compressor IPM unit, and the fan IPM unit; wherein the fan IPM unit, the fan MCU unit, the fan connection socket, and the electrolytic capacitor bank are all located in the first area.

[0019] The above technical solution has the following advantages or beneficial effects: the fan IPM unit, fan MCU unit, fan connection socket and electrolytic capacitor group are all located in the first area, which can separate the strong and weak current circuits, reduce signal interference between strong and weak currents, improve the stability and reliability of the outdoor unit of the air conditioner, and the fan IPM unit, fan MCU unit, fan connection socket, electrolytic capacitor and compressor IPM unit can be arranged more compactly, which is conducive to reducing the size of the control board and facilitating assembly and fixing.

[0020] According to some embodiments of this utility model, a plurality of first components include: a power terminal group, the power terminal group being adjacent to the side of the board, the power terminal group including a live wire terminal and a neutral wire terminal, and the live wire terminal and the neutral wire terminal being arranged along a first direction; an EMC filter unit, the EMC filter unit being adjacent to the power terminal group and arranged along a second direction with the power terminal group; and a main relay unit, the main relay unit being adjacent to the EMC filter unit and the rectifier bridge and arranged along the first direction with the EMC filter unit; wherein, the main relay unit is adjacent to the rectifier bridge, and the power terminal group, the EMC filter unit, and the main relay unit are all located in the first region.

[0021] The above technical solution has the following advantages or beneficial effects: the EMC filter unit can be closer to the power supply terminal group, which is conducive to improving the filtering effect of the power supply terminal group. Furthermore, the relay unit and rectifier bridge can be set up close to the EMC filter unit, which not only improves the filtering effect, but also makes the adjacent components more compact, facilitating electrical connection and wiring.

[0022] According to some embodiments of this utility model, the plurality of first components further include: a main control MCU unit, wherein the main control MCU unit is disposed in the second region and adjacent to the first region, and the main control MCU unit is electrically connected to the compressor IPM unit and the fan MCU unit respectively; a switching power supply unit, wherein the switching power supply unit has an input terminal and an output terminal, the input terminal being disposed in the first region and the output terminal being disposed in the second region; a relay control unit, wherein the relay control unit is adjacent to the side of the plate, part of the relay control unit being disposed in the first region and another part being disposed in the second region; a communication unit and a sensor unit, wherein the communication unit and the sensor unit are disposed in the second region and adjacent to the side of the plate ladder.

[0023] The above technical solution has the following advantages or beneficial effects: the main control MCU unit can be connected to the fan MCU unit and the compressor IPM unit respectively, making the wiring layout more convenient. At the same time, it can reduce signal interference between strong and weak currents, improving the stability and reliability of the outdoor unit of the air conditioner; the switching power supply unit and the relay control unit are arranged across areas to facilitate connecting the input terminal to strong current and the output terminal to weak current; the communication unit and the sensor unit are both located in the second area, separating the communication unit and the sensor unit from the strong current circuit with strong interference, making them less susceptible to interference.

[0024] An outdoor unit for an air conditioner according to an embodiment of this utility model includes: a housing, wherein the housing has an air inlet and an air outlet; a compressor, wherein the compressor is disposed within the housing; a heat exchanger, wherein the heat exchanger is disposed within the housing; a heat exchange fan, wherein the heat exchange fan is disposed within the housing, wherein the heat exchange fan drives air to enter the housing from the air inlet when operating, and the air is discharged from the housing through the air outlet after exchanging heat with the heat exchanger; and an electrical control box, wherein the electrical control box is disposed within the housing, and the electrical control box includes: a housing body, wherein the housing body is disposed within the housing. The control board is disposed within the housing and is electrically connected to the compressor and the heat exchange fan, respectively. The control box further includes a radiator disposed within the housing and connected to the control board for heat dissipation. The control board includes a board body and multiple components, which are respectively disposed on opposite sides of the board body in the thickness direction. The radiator is disposed on one side of the board body and connected to the components on that side of the board body, and the radiator is located between the board body and the bottom plate of the housing.

[0025] The above technical solution has the following advantages or beneficial effects: multiple components are respectively arranged on opposite sides of the board, which can separate components with high heat generation from those with low heat generation. For example, components with high heat generation can be concentrated on the same side of the board, so that the heat sink can contact and connect with multiple concentrated components with high heat generation at the same time. This allows the heat sink to directly dissipate heat from multiple components with high heat generation at the same time, which helps to improve the heat dissipation efficiency of the heat sink for the control board, avoids the temperature of the control board from getting too high, and makes the operation of the control board more stable and reliable. In addition, the heat sink and the board can separate the space inside the control box, which can improve the waterproof and dustproof capabilities of the control board and facilitate maintenance operations such as accessing the control board from the top of the control box.

[0026] 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

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of the layout of the electronic control board according to an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the layout of the first side of the electronic control board according to an embodiment of the present utility model;

[0030] Figure 3This is a schematic diagram of the layout of the second side of the electronic control board according to an embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the electronic control board according to an embodiment of the present utility model;

[0032] Figure 5 This is a structural schematic diagram of the electronic control board according to another perspective of an embodiment of the present utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the first side of the electronic control board according to an embodiment of the present utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the second side of the electronic control board according to an embodiment of the present utility model;

[0035] Figure 8 This is a schematic diagram of the second side of the electronic control board according to an embodiment of the present invention, after removing the fixing frame and the heat sink;

[0036] Figure 9 This is an exploded view of the electronic control board according to an embodiment of the present utility model.

[0037] Figure label:

[0038] 100. Radiator; 110. Fixing frame; 120. Mounting bracket;

[0039] 200. Control board; 210. Board body; 211. First area; 212. Second area; 213. First side; 214. Second side;

[0040] 221. FRD unit; 222. IGBT unit; 223. Rectifier bridge; 224. Compressor IPM unit;

[0041] 241. Fan IPM Unit; 242. Fan MCU Unit; 243. Fan Connection Socket; 244. Electrolytic Capacitor Bank; 2441. Electrolytic Capacitor; 246. Power Terminal Block; 2461. Live Wire Terminal; 2462. Neutral Wire Terminal; 247. EMC Filter Unit; 248. Main Relay Unit; 251. PFC Inductor; 252. Switching Power Supply Unit; 253. Relay Control Unit; 254. Main Control MCU Unit; 255. Communication Unit; 256. Sensor Unit; 257. Compressor Connection Socket;

[0042] 260. Heat dissipation components. Detailed Implementation

[0043] 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0046] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0047] The outdoor unit of an air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0048] like Figures 1-9 As shown, where, Figure 1 The solid line represents the component on the first side 213 of the plate 210, and the dashed line represents the component on the second side 214 of the plate 210.

[0049] According to an embodiment of the present invention, the outdoor unit of the air conditioner may include a housing, which has an air inlet and an air outlet, allowing outdoor air to flow into the housing from the air inlet and out of the housing from the air outlet.

[0050] An outdoor unit of an air conditioner may include a compressor, which is housed within a casing.

[0051] An outdoor unit of an air conditioner may include a heat exchanger, which is located inside the casing. The refrigerant flowing through the heat exchanger can release heat to the outdoor air through the heat exchanger, or it can absorb heat from the outdoor air through the heat exchanger.

[0052] The outdoor unit of an air conditioner may include a heat exchange fan, which is located inside the casing. The heat exchange fan drives air into the casing from the air inlet, and after exchanging heat with the heat exchanger, the air is discharged from the casing from the air outlet. In this way, the operation of the heat exchange fan can guide outdoor air into the casing so that the refrigerant can exchange heat with the outdoor air through the heat exchanger.

[0053] The outdoor unit of an air conditioner may include an electrical control box, which is located inside the housing.

[0054] The electrical control box may include a box body housed within a housing. Additionally, the electrical control box may include an electrical control board 200 housed within the box body. This allows the electrical control board to be protected by the box body and facilitates the fixing of the electrical control box within the housing. Furthermore, the electrical control board 200 is electrically connected to both the compressor and the heat exchange fan, enabling the electrical control board 200 to control the operation of the compressor and the heat exchanger.

[0055] The electrical control box may also include a heat sink 100, which is disposed inside the box and connected to the electrical control board 200 to dissipate heat from the electrical control board 200. The heat sink 100 can be connected to the electrical control board 200 via a fixing frame 110, allowing the heat sink 100 to be fixed relative to the electrical control board 200, facilitating heat dissipation for the components on the electrical control board 200.

[0056] In addition, the control board 200 may include a board body 210, with the two opposite sides of the board body 210 in the thickness direction being a first side 213 and a second side 214. The control board 200 is disposed in the box, so that part of the space inside the box can be located on the first side 213 of the board body 210, and another part of the space inside the box can be located on the second side 214 of the board body 210.

[0057] The control board 200 may include a plurality of first components, which are low-heat-generating components. The plurality of first components are located on the first side 213 and connected to the board body 210.

[0058] Additionally, the control board 200 may include multiple second components, which are high-heat-generating components. The multiple second components are located on the second side 214 and connected to the board body 210. The heat sink 100 is located on the second side 214 and connected to the multiple second components.

[0059] The connection between the heat sink 100 and multiple second components means that the heat sink 100 can contact and connect with the second components. For example, the heat sink 100 can be connected and fixed to the board 210 through the fixing frame 110 so that the heat sink 100 can contact the second components, and thus the heat sink 100 can be used to dissipate heat and cool down the second components.

[0060] By placing multiple first components on the first side 213 and multiple second components on the second side 214, that is, low-heat-generating components can be placed on the first side 213 and multiple high-heat-generating components can be placed on the second side 214, multiple high-heat-generating components can be concentrated on the same side of the board 210, so that the heat sink 100 can simultaneously contact and connect with multiple concentrated second components. This allows the heat sink 100 to directly dissipate heat from multiple components with high heat generation at the same time, which helps to improve the heat dissipation efficiency of the heat sink 100 on the electronic control board 200, avoids the temperature of the electronic control board 200 from being too high, and makes the operation of the electronic control board 200 more stable and reliable.

[0061] Furthermore, with this configuration, after the control board 200 is installed inside the control box, the space inside the control box can be separated by the heat sink 100 and the board body 210. In this way, the heat dissipation space inside the control box can be located on the side of the board body 210 facing the heat sink 100. For example, the heat dissipation space inside the box can be located on the lower side of the board body 210. This can separate multiple first components from the heat dissipation space, so that most components can be separated from the heat dissipation space. This can improve the waterproof and dustproof capabilities of the control board 210 and facilitate maintenance and other operations of the control board 200 from the top area of ​​the control box.

[0062] Thus, the outdoor unit of the air conditioner according to the present utility model embodiment can use the radiator 100 to centrally dissipate heat from the high-heat-generating components on the electronic control board 200, thereby improving the heat dissipation efficiency of the electronic control board 200 and enhancing the waterproof, dustproof, and insect-proof capabilities of the electronic control board 200.

[0063] In some specific embodiments of this utility model, the box body has a bottom plate, the second side 214 of the plate 210 faces the bottom plate, and the heat sink 100 is supported between the second side 214 and the bottom plate.

[0064] In this way, the second side 214 of the board 210 can be set downwards, that is, the heat sink 100 can be set below the board 210, and the heat dissipation space inside the box can be located below the board 210. This not only allows the heat sink 100 and the board 210 to separate the space inside the electrical control box vertically, but also allows the electrical control board 200 to be located in the upper area inside the box, further improving the waterproof and dustproof capabilities of the electrical control board 200. It also facilitates maintenance and other operations on the electrical control board 200 from the upper area of ​​the electrical control box, which is beneficial to improving the convenience of operating and maintaining the electrical control board 200.

[0065] In some specific embodiments of this utility model, such as Figure 9As shown, the control board 200 may include a fixed frame 110. Specifically, the fixed frame 110 may be disposed on the second side 214 of the board body 210 and connected to the board body 210. Then, the heat sink 100 may be connected to the fixed frame 110 so that the heat sink 100 may be fixed relative to the board body 210.

[0066] In addition, the control board 200 may also include a mounting bracket 120, which may be located on the second side 214 and between the board body 210 and the heat sink 100. The mounting bracket 120 can avoid the second component, so that while the heat sink 100 contacts the second component and dissipates heat, the heat sink 100 can avoid excessive pressure on the second component, which could damage the second component.

[0067] In some specific embodiments of this utility model, such as Figure 1 , Figure 3 , Figure 8 and Figure 9 As shown, a plurality of second components are disposed near the center of the length and / or width direction of the board 210, and / or, the heat sink 100 is disposed near the center of the length and / or width direction of the board 210.

[0068] In this way, multiple second components can be arranged in a concentrated manner near the middle of the length or width of the board 210, that is, multiple second components can be located in a relatively central position of the board 210. At the same time, the heat sink 100 can also be arranged near the middle of the length or width of the board 210. This facilitates the installation and fixing of the electronic control board 200 and the design of the heat dissipation channel, and the heat sink 100 can concentrate on dissipating heat and cooling multiple second components.

[0069] In some specific embodiments of this utility model, such as Figures 1-3 As shown, the board 210 has a first region 211 and a second region 212. Multiple first components may include high-voltage components and low-voltage components. The high-voltage components are located in the first region 211 and the low-voltage components are located in the second region 212. The second components are located in the first region 211.

[0070] In other words, the first area 211 is the high-voltage area, where the high-voltage components and second components among the multiple first components can be located. The second area 212 is the low-voltage area, where the low-voltage components among the multiple second components can be located. That is, high-voltage components and low-voltage components can be set up in separate areas. This can reduce signal interference between high and low voltage, strengthen the circuit's anti-interference capability, and improve electromagnetic compatibility. It is beneficial to improve the stability and reliability of the control board 200 and facilitates the overall wiring layout of the control board 200. It can effectively solve problems such as difficulties in the layout and wiring of multiple components, poor heat dissipation of power devices, and mutual interference between high and low voltage wiring.

[0071] Additionally, it should be noted that the layout of the high-voltage components in the first area 211 can be arranged according to the direction of the high-voltage current, and copper foil can be connected between multiple components. This can reduce the current loop and thus reduce current interference.

[0072] In some specific embodiments of this utility model, such as Figure 1 , Figure 3 , Figure 8 and Figure 9 As shown, the multiple second components may include multiple FRD units 221 (Fast Recovery Diodes).

[0073] Multiple second components may also include multiple IGBT units 222 (Insulated-Gate Bipolar Transistors).

[0074] Multiple second components may also include multiple rectifier bridges 223.

[0075] FRD units 221 and IGBT units 222 are arranged at intervals along a first direction, and FRD units 221 and IGBT units 222 are arranged at intervals with rectifier bridges 223 along a second direction. Multiple FRD units 221, multiple IGBT units 222, and multiple rectifier bridges 223 are all connected to the heat sink 100. This arrangement allows for a more compact layout of the multiple second components, facilitating simultaneous contact and connection between multiple second components and preventing positional interference between them, resulting in a more rational layout.

[0076] The multiple first components may include multiple PFC inductors 251 (Power Factor Correction), with each PFC inductor 251 being adjacent to a multiple FRD unit 221.

[0077] The first direction can be the width direction of the electronic control board 200, and the direction of arrow A in the attached figure is the first direction. The second direction can be the length direction of the electronic control board 200, and the direction of arrow B in the attached figure is the second direction.

[0078] It should be noted that the FRD unit 221, IGBT unit 222 and PFC inductor 251 are the three main components of the PFC circuit. Each PFC circuit includes a set of FRD unit 221, IGBT unit 222 and PFC inductor 251. In this embodiment, two interleaved PFC circuits can be set, that is, two FRD units 221, two IGBT units 222 and two PFC inductors 251 can be set in this embodiment.

[0079] With this configuration, multiple FRD units 221, multiple rectifier bridges 223, and multiple IGBT units 222 can be placed on the second side 214 of the board 210. The FRD units 221, rectifier bridges 223, and IGBT units 222 can be closely attached to the heat sink 100 to transfer heat to the heat sink 100. This allows the heat sink 100 to quickly dissipate heat and cool down multiple secondary components, thereby reducing the temperature of the control board 200.

[0080] Furthermore, by arranging multiple PFC inductors 251 adjacent to multiple FRD units 221, the PFC inductors 251 can be arranged closely with power components, which helps to reduce high-frequency current loops.

[0081] In some specific embodiments of this utility model, such as Figure 1 , Figure 3 , Figure 8 and Figure 9 As shown, the multiple second components may also include a compressor IPM unit 224 (Intelligent Power Module v), which is connected to the heat sink 100, and the compressor IPM unit 224 and the IGBT unit 222 are arranged along the first direction.

[0082] In this way, the press IPM unit 224 can be adjacent to the IGBT unit 222 in the first direction, so that the arrangement of multiple second components is more compact and it is easier for the press IPM unit 224 to contact and connect with the heat sink 100. That is, the heat sink 100 can simultaneously contact and connect with the FRD unit 221, IGBT unit 222, rectifier bridge 223 and press IPM unit 224, so that the heat sink 100 can simultaneously dissipate heat and cool down the FRD unit 221, IGBT unit 222, rectifier bridge 223 and press IPM unit 224, and the press IPM unit 224 will not interfere with the position of other second components.

[0083] Additionally, the multiple first components may include a press connection socket 257, which is located on the first side 213 and electrically connected to the press IPM unit 224 via the plate 210. For example, copper foil may be provided on the plate 210, and the copper foil may penetrate the plate 210 along its thickness direction. The press IPM unit 224 and the press connection socket 257 can be electrically connected through the copper foil on the plate 210. Furthermore, the press connection socket 257 may be adjacent to the press IPM unit 224 along the second direction, so that the press connection socket 257 and the press IPM unit 224 can be in close proximity to facilitate electrical connection between them.

[0084] In some specific embodiments of this utility model, such as Figure 2 , Figures 4-6 As shown, the multiple first components may also include a fan IPM unit 241. A heat dissipation component 260 may be provided on the side of the fan IPM unit 241 facing away from the board 210. The heat dissipation component 260 can be connected to the fan IPM unit 241 by screws to dissipate heat from the fan IPM unit 241.

[0085] Multiple first components may also include a fan MCU unit 242 (micro control unit).

[0086] The multiple first components may also include a fan connection socket 243.

[0087] The multiple first components may also include an electrolytic capacitor bank 244.

[0088] The fan IPM unit 241, the fan MCU unit 242, and the fan connection socket 243 are arranged at intervals. The electrolytic capacitor group 244 includes multiple electrolytic capacitors 2441, which are connected in parallel as supporting capacitors for the DC bus voltage. The electrolytic capacitor group 244 is adjacent to the FRD unit 221, the IGBT unit 222, the PFC inductor 251, the compressor IPM unit 224, and the fan IPM unit 241.

[0089] The fan IPM unit 241, fan MCU unit 242, fan connection socket 243, and electrolytic capacitor group 244 are all located in the first area 211. This separates the strong and weak electrical circuits, reduces signal interference between the strong and weak electrical circuits, and improves the stability and reliability of the outdoor unit of the air conditioner.

[0090] In other words, the fan IPM unit 241, the fan MCU unit 242, and the fan connection socket 243 can all be located on the first side 213 of the board 210, and the fan IPM unit 241, the fan MCU unit 242, and the fan connection socket 243 can be arranged at intervals along the second direction. Also, the electrolytic capacitor 2441 can be located on the first side 213, and the electrolytic capacitor 2441 and the second component can be arranged at intervals along the second direction. This can avoid interference between the positions of the electrolytic capacitor 2441 and the second component, and can make the arrangement of the first component and the second component more compact, which is beneficial to reducing the size of the control board 200 and facilitating assembly.

[0091] Specifically, such as Figure 6 As shown, four electrolytic capacitors 2441 can be configured. The four electrolytic capacitors 2441 can be arranged alternately along the first direction and the second direction to make the arrangement of multiple electrolytic capacitors 2441 more compact, which is beneficial to reduce the space occupied by the electrolytic capacitor group 244 on the board 210.

[0092] In some specific embodiments of this utility model, such as Figure 2 , Figures 4-6 As shown, the multiple first components may include a power terminal group 246, which is adjacent to the side of the board 210, thus facilitating the electrical connection of the power terminal group 246 with external components.

[0093] Specifically, the power terminal group 246 includes a live wire terminal 2461 and a neutral wire terminal 2462, and the live wire terminal 2461 and the neutral wire terminal 2462 are arranged along a first direction. In this way, both the live wire terminal 2461 and the neutral wire terminal 2462 can be located adjacent to one side of the plate 210 in a second direction, so that the live wire terminal 2461 and the neutral wire terminal 2462 can be electrically connected to external components respectively.

[0094] The multiple first components may also include an EMC filter unit 247 (Electromagnetic Compatibility), which is adjacent to the power terminal group 246 and arranged along the second direction. In this way, the distance between the EMC filter unit 247 and the power terminal group 246 can be relatively close, which is beneficial to improving the filtering effect on the power terminal group 246.

[0095] The multiple first components may also include a main relay unit 248, which is adjacent to the EMC filter unit 247 and the rectifier bridge 223 and is arranged with the EMC filter unit 247 along a first direction.

[0096] Specifically, the main relay unit 248 and the EMC filter unit 247 are arranged along the first direction, and the main relay unit 248 and the EMC filter unit 247 are adjacent to the rectifier bridge 223 in the second direction. In this way, both the relay unit 248 and the rectifier bridge 223 can be set close to the EMC filter unit 247, which not only improves the filtering effect, but also makes the arrangement of adjacent components more compact, facilitating electrical connection and wiring.

[0097] The main relay unit 248 is located near the rectifier bridge 223, and the power terminal group 246, EMC filter unit 247 and main relay unit 248 are all located in the first area 211. This separates the strong and weak current circuits, reduces signal interference between strong and weak currents, and improves the stability and reliability of the outdoor unit of the air conditioner.

[0098] In some specific embodiments of this utility model, such as Figure 2 , Figures 4-6 As shown, the multiple first components may also include a main control MCU unit 254, which is located in the second region 212 and adjacent to the first region 211. The main control MCU unit 254 is electrically connected to the compressor IPM unit 224 and the fan MCU unit 242, respectively.

[0099] The main control MCU unit 254 is adjacent to the main relay unit 248 along the first direction and adjacent to the press IPM unit 224 along the second direction, so that the main control MCU unit 254 and the press IPM unit 224 can be electrically connected. The press IPM unit 224 can receive control signals from the main control MCU unit 254 and can also output signals to the main control MCU unit 254.

[0100] In addition, the main control MCU unit 254 can also be electrically connected to the PFC circuit. Although the main control MCU unit 254 is located in the second area, it is adjacent to the first area 211. This allows the main control MCU unit 254 to be close to the PFC circuit and the compressor IPM unit 224, facilitating the connection of control signals and sampling signals between them. Furthermore, the main control MCU unit 254 can have a communication connection circuit with the fan MCU unit 242, enabling the main control MCU unit 254 to output signals to the fan MCU unit 242 or to receive signals from the fan MCU unit 242.

[0101] In addition, the main control MCU unit 254 is a low-voltage component. By placing the main control MCU unit 254 in the second region 212 and adjacent to the first region 211, it is convenient for the main control MCU unit 254 to be electrically connected to the components in the first region 211, and the main control MCU unit 254 can be separated from the high-voltage components to avoid interference.

[0102] like Figure 1 and Figure 4 As shown, the multiple first components may further include a switching power supply unit 252, which has an input terminal and an output terminal. The input terminal is located in the first region 211 and the output terminal is located in the second region 212. That is, the switching power supply unit 252 can be arranged across regions. In this way, the input of the switching power supply unit 252 can be high voltage and the output can be low voltage, so as to allow a large current to be input to the switching power supply unit 252 and a small current to be output, and to reduce the likelihood of interference.

[0103] like Figure 1 and Figure 4 As shown, the plurality of first components may further include a relay control unit 253, which is adjacent to the side of the board 210. Part of the relay control unit 253 is located in the first region 211 and another part is located in the second region 212. The relay control unit 253 may include a relay control circuit and a relay control socket to facilitate electrical connection between the relay control unit 253 and other components.

[0104] like Figure 1 and Figure 4 As shown, the plurality of first components may further include a communication unit 255. The communication unit 255 may include a communication circuit and a communication socket to facilitate electrical connection between the communication unit 255 and other components.

[0105] The multiple first components may also include a sensor unit 256. The sensor unit 256 may include sensor circuitry and a sensor socket to facilitate electrical connection between the sensor unit 256 and other components.

[0106] By placing both the communication unit 255 and the sensor unit 256 within the second region 212, the communication unit 255 and the sensor unit 256 can be separated from high-voltage components that are prone to interference, making them less susceptible to interference and facilitating the layout and wiring of the control board 200.

[0107] The outdoor unit of an air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0108] like Figures 1-9 As shown, where, Figure 1The solid line represents the component on the first side 213 of the plate 210, and the dashed line represents the component on the second side 214 of the plate 210.

[0109] According to an embodiment of the present invention, the outdoor unit of the air conditioner may include a housing, which has an air inlet and an air outlet, allowing outdoor air to flow into the housing from the air inlet and out of the housing from the air outlet.

[0110] An outdoor unit of an air conditioner may include a compressor, which is housed within a casing.

[0111] An outdoor unit of an air conditioner may include a heat exchanger, which is located inside the casing. The refrigerant flowing through the heat exchanger can release heat to the outdoor air through the heat exchanger, or it can absorb heat from the outdoor air through the heat exchanger.

[0112] The outdoor unit of an air conditioner may include a heat exchange fan, which is located inside the casing. The heat exchange fan drives air into the casing from the air inlet, and after exchanging heat with the heat exchanger, the air is discharged from the casing from the air outlet. In this way, the operation of the heat exchange fan can guide outdoor air into the casing so that the refrigerant can exchange heat with the outdoor air through the heat exchanger.

[0113] The outdoor unit of an air conditioner may include an electrical control box, which is located inside the housing.

[0114] The electrical control box may include a box body housed within the housing. Additionally, the electrical control box may include an electrical control board 200 housed within the box body. This allows the electrical control board 200 to be protected by the box body and facilitates the fixing of the electrical control box within the housing. Furthermore, the electrical control board 200 is electrically connected to both the compressor and the heat exchange fan, enabling the electrical control board 200 to control the operation of the compressor and the heat exchanger.

[0115] The electrical control box may also include a heat sink 100, which is disposed inside the box and connected to the electrical control board 200 to dissipate heat from the electrical control board 200. The heat sink 100 can be connected to the electrical control board 200 via a fixing frame 110, allowing the heat sink 100 to be fixed relative to the electrical control board 200, facilitating heat dissipation for the components on the electrical control board 200.

[0116] In addition, the electronic control board 200 may include a board body 210.

[0117] The control board 200 may also include multiple components, which are respectively located on opposite sides of the board body 210 in the thickness direction. The heat sink 100 is connected to the components on one side of the board body 210, and the heat sink 100 is located between the board body 210 and the bottom plate of the box. In this way, the space inside the box can be located on opposite sides of the board body 210.

[0118] The connection between the heat sink 100 and the components on one side of the board 210 means that the heat sink 100 can make contact with the components on one side of the board 210. For example, the heat sink 100 can be connected and fixed to the board 210 through the fixing frame 110 so that the heat sink 100 can make contact with the components on one side of the board 210, and thus the heat sink 100 can be used to dissipate heat and cool down the components on one side of the board 210.

[0119] By placing multiple components on opposite sides of the board 210, components with high heat generation can be separated from those with low heat generation. For example, components with high heat generation can be concentrated on the same side of the board 210, so that the heat sink 100 can simultaneously contact and connect with multiple components with high heat generation. This allows the heat sink 100 to directly dissipate heat from multiple components with high heat generation at the same time, which helps improve the heat dissipation efficiency of the heat sink 100 on the control board 200, avoids the temperature of the control board 200 from becoming too high, and makes the operation of the control board 200 more stable and reliable.

[0120] Furthermore, with this configuration, after the control board 200 is installed inside the control box, the space inside the control box can be separated by the heat sink 100 and the board body 210. In this way, the heat dissipation space inside the control box can be located on the side of the board body 210 facing the heat sink 100. For example, the heat dissipation space inside the box can be located on the lower side of the board body 210. This can separate multiple components on the other side of the board body 210 from the heat dissipation space, thereby improving the waterproof and dustproof capabilities of the control board 210 and facilitating maintenance and other operations on the control board 200 from the top area of ​​the control box.

[0121] Thus, the outdoor unit of the air conditioner according to the present utility model embodiment can use the radiator 100 to centrally dissipate heat from the high-heat-generating components on the electronic control board 200, thereby improving the heat dissipation efficiency of the electronic control board 200 and enhancing the waterproof, dustproof, and insect-proof capabilities of the electronic control board 200.

[0122] Other components and operations of the outdoor unit of the air conditioner according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0123] The air conditioner of this invention performs a refrigeration cycle by using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0124] The compressor compresses refrigerant gas under high temperature and pressure 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 the heat is released to the surrounding environment through the condensation process.

[0125] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature and humidity of the indoor space.

[0126] In the description of this specification, references to terms such as "specific embodiment" and "specific example" refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0127] 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, comprising: The housing is provided with an air inlet and an air outlet; A compressor, wherein the compressor is disposed within the housing; A heat exchanger, wherein the heat exchanger is disposed within the housing; A heat exchange fan is provided inside the housing. When the heat exchange fan is running, it drives air to enter the housing from the air inlet, and the air is discharged from the housing through the air outlet after exchanging heat with the heat exchanger. An electrical control box, wherein the electrical control box is disposed within the housing, and the electrical control box includes: A box body, wherein the box body is disposed within the housing; An electrical control board is disposed inside the housing and is electrically connected to the compressor and the heat exchange fan, respectively. The electrical control box is characterized in that it further includes: A radiator is disposed inside the housing and connected to the electronic control board to dissipate heat from the electronic control board. The electronic control board includes: A plate, wherein the two opposite sides of the plate in the thickness direction are the first side and the second side; Multiple first components, each of which is a low-heat-generating component, are disposed on the first side and connected to the plate body. Multiple second components, which are high-heat-generating components, are disposed on the second side and connected to the plate body. The heat sink is disposed on the second side and connected to the multiple second components.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, The box has a base plate, the second side of the plate faces the base plate, and the heat sink is supported between the second side and the base plate.

3. The outdoor unit of the air conditioner according to claim 1, characterized in that, A plurality of the second components are disposed adjacent to the center of the plate in the length and / or width directions; and / or The heat sink is located near the center of the plate in the length and / or width directions.

4. The outdoor unit of the air conditioner according to claim 1, characterized in that, The board has a first region and a second region. The plurality of first components include high-voltage components and low-voltage components. The high-voltage components are located in the first region and the low-voltage components are located in the second region. The second components are located in the first region.

5. The outdoor unit of the air conditioner according to claim 4, characterized in that, The plurality of second components include a plurality of FRD units, a plurality of IGBT units and a plurality of rectifier bridges. The FRD units and the IGBT units are arranged at intervals along a first direction, and the FRD units and the IGBT units are arranged at intervals with the rectifier bridges along a second direction. The plurality of FRD units, the plurality of IGBT units and the plurality of rectifier bridges are all connected to the heat sink. as well as The plurality of first components include a plurality of PFC inductors, and the plurality of PFC inductors are respectively adjacent to the plurality of FRD units.

6. The outdoor unit of the air conditioner according to claim 5, characterized in that, The plurality of second components further include a press IPM unit, the press IPM unit being connected to the heat sink, and the press IPM unit and the IGBT unit being arranged along the first direction; and The plurality of first components include a press connection socket, which is located on the first side and electrically connected to the press IPM unit through the plate.

7. The outdoor unit of the air conditioner according to claim 6, characterized in that, The plurality of the first components also include: The fan IPM unit, the fan MCU unit, and the fan connection socket are arranged at intervals. An electrolytic capacitor bank, comprising multiple electrolytic capacitors, is located adjacent to the FRD unit, the IGBT unit, the PFC inductor, the compressor IPM unit, and the fan IPM unit, respectively. The fan IPM unit, the fan MCU unit, the fan connection socket, and the electrolytic capacitor bank are all located in the first area.

8. The outdoor unit of the air conditioner according to claim 5, characterized in that, The plurality of the first components include: A power terminal group is located adjacent to the side of the board body. The power terminal group includes a live wire terminal and a neutral wire terminal, and the live wire terminal and the neutral wire terminal are arranged along a first direction. EMC filter unit, wherein the EMC filter unit is adjacent to the power terminal group and is arranged along the second direction with the power terminal group; A main relay unit, wherein the main relay unit is adjacent to the EMC filter unit and the rectifier bridge and is arranged with the EMC filter unit along the first direction; The main relay unit is located adjacent to the rectifier bridge, and the power supply terminal group, the EMC filter unit, and the main relay unit are all located in the first region.

9. The outdoor unit of the air conditioner according to claim 7, characterized in that, The plurality of the first components also include: A main control MCU unit is located in the second region and adjacent to the first region. The main control MCU unit is electrically connected to the compressor IPM unit and the fan MCU unit respectively. A switching power supply unit, the switching power supply unit having an input terminal and an output terminal, the input terminal being located in the first region and the output terminal being located in the second region; A relay control unit, wherein the relay control unit is adjacent to the side of the plate, and a portion of the relay control unit is disposed in the first region and another portion is disposed in the second region; A communication unit and a sensor unit are provided in the second region and adjacent to the side of the plate.

10. An outdoor unit of an air conditioner, comprising: The housing is provided with an air inlet and an air outlet; A compressor, wherein the compressor is disposed within the housing; A heat exchanger, wherein the heat exchanger is disposed within the housing; A heat exchange fan is provided inside the housing. When the heat exchange fan is running, it drives air to enter the housing from the air inlet, and the air is discharged from the housing through the air outlet after exchanging heat with the heat exchanger. An electrical control box, wherein the electrical control box is disposed within the housing, and the electrical control box includes: A box body, wherein the box body is disposed within the housing; An electrical control board is disposed inside the housing and is electrically connected to the compressor and the heat exchange fan, respectively. The electrical control box is characterized in that it further includes: A radiator is disposed inside the housing and connected to the electronic control board to dissipate heat from the electronic control board. The electronic control board includes a board body and multiple components. The multiple components are respectively disposed on opposite sides of the board body in the thickness direction. The heat sink is disposed on one side of the board body and connected to the components on the same side of the board body. The heat sink is located between the board body and the bottom plate of the housing.

Images