Electric control box device, air conditioner outdoor unit and air conditioner system

Abstract

The utility model discloses an electric control box device, an air conditioner outdoor unit and an air conditioning system. The electric control box device comprises an electric control box body, an electric control board, a first component, a second component, an air cooler and an electric control radiator, the electric control box body is internally provided with a heat dissipation air channel, an airflow inlet and an airflow outlet which are communicated, the electric control board is arranged in the electric control box body and comprises a first board part and a second board part which are arranged in the first direction, and the second board part is located in the heat dissipation air channel. The first component is arranged on the first plate part, the second component is arranged on the second plate part, the heating value of the first component is larger than that of the second component, the air cooler is used for cooling airflow flowing to the heat dissipation air channel, and the electric control radiator is in heat conduction connection with the first component and used for dissipating heat of the first component through refrigerants. Therefore, various components can be arranged in different regions, and different heat dissipation modes are adopted for the components in different regions, so that the heat dissipation efficiency of the electric control box device is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field especially relates to a kind of electric control box device, air conditioner outdoor unit and air conditioning system. BACKGROUND

[0002] In the related art, the electric control box component with the electric control module is usually arranged in the outdoor unit to control the operation of the compressor assembly and other components. During the operation of the outdoor unit, the electric control module generates a large amount of heat, and the electric control module needs to be cooled to ensure its normal operation.

[0003] However, due to the poor heat dissipation effect of the electric control module, the electric control box component is in a high-temperature working condition, which adversely affects the operation of the outdoor unit and the air conditioning capacity of the air conditioning equipment. Therefore, improvement is needed. SUMMARY

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent.

[0005] To this end, one object of the utility model is to provide an electric control box device that can use different heat dissipation methods for various components to optimize the heat dissipation efficiency of the electric control box device.

[0006] Another object of the utility model is to provide an air conditioner outdoor unit, which includes the aforementioned electric control box device.

[0007] Still another object of the utility model is to provide an air conditioning system, which includes the aforementioned air conditioner outdoor unit.

[0008] According to the electric control box device of the utility model embodiment, the electric control box device includes an electric control box body, an electric control board, a first component, a second component, an air cooler, and an electric control radiator. The electric control box body has a heat dissipation air duct, an air inlet, and an air outlet. The heat dissipation air duct communicates with the air inlet and the air outlet. The electric control board is arranged in the electric control box body and includes a first board part and a second board part arranged in a first direction. The second board part is located in the heat dissipation air duct. The first component is arranged in the first board part, and the second component is arranged in the second board part. The heat dissipation of the first component is greater than that of the second component. The air cooler is arranged on the air inlet side of the electric control box body and is configured to cool the air flowing to the heat dissipation air duct. The electric control radiator is arranged in the electric control box body and is in thermal contact with the first component, and is configured to dissipate heat from the first component using a refrigerant.

[0009] According to the embodiment of the present invention, the electrical control box device is arranged in zones for various components and different heat dissipation methods are adopted for components in different areas, thereby optimizing the heat dissipation efficiency of the electrical control box device.

[0010] In addition, the electrical control box device according to the above embodiments of this utility model may also have the following additional technical features:

[0011] Optionally, the first component is configured as a power device, and the second component is configured as a passive device.

[0012] Optionally, the airflow inlet and the airflow outlet are opposite each other along a second direction, and in the projection of the second direction, the second component at least partially overlaps with the airflow inlet or the airflow outlet, and the first direction intersects the second direction.

[0013] Optionally, the air cooler covers the airflow inlet and has an airflow channel opposite to the airflow inlet.

[0014] Optionally, the air cooler includes a second refrigerant pipe configured to use refrigerant to cool the airflow flowing toward the heat dissipation duct.

[0015] Optionally, the air cooler includes multiple heat dissipation fins and a second refrigerant pipe. The multiple heat dissipation fins are arranged at intervals at the airflow inlet, and the heat dissipation fins are provided with through holes, through which the second refrigerant pipe passes.

[0016] Optionally, the air cooler is located outside the electrical control box.

[0017] Optionally, the airflow inlet has an inner edge facing the inside of the electrical control box and an outer edge facing away from the inside of the electrical control box, and the air cooler is located on the outer edge of the airflow inlet.

[0018] Optionally, the control board has two opposing sides along the thickness direction, and the first component and the second component are located on the same side of the control board.

[0019] Optionally, the electronically controlled radiator includes a first refrigerant pipe, and the air cooler includes a second refrigerant pipe, wherein the first refrigerant pipe and the second refrigerant pipe are connected in series; or, the first refrigerant pipe and the second refrigerant pipe are connected in parallel.

[0020] Optionally, the electrical control box includes an inner box, which includes a first housing and a second housing connected along a third direction. The electrical control board is installed in the first housing, and the components on the electrical control board are located in the second housing. The second housing has a heat dissipation duct and a through hole. The second housing has an airflow inlet and an airflow outlet. The heat dissipation duct and the through hole are arranged along the first direction. The first plate and the electrical control heat sink are respectively located on opposite sides of the through hole along the third direction. The first component passes through the through hole to be thermally connected to the electrical control heat sink.

[0021] Optionally, the electrical control box further includes a sheet metal shell, which covers the outside of the inner box, forming a clearance space between the inner box and the sheet metal shell, and the electrical control heat sink is disposed within the clearance space.

[0022] Optionally, the electrical control box device further includes a support frame, the electrical control box body is disposed inside the sheet metal shell and located in the clearance space, for positioning and supporting the electrical control heat sink, and in the third direction, the electrical control heat sink is located on the side of the support frame near the through hole.

[0023] According to an embodiment of the present invention, the outdoor unit of the air conditioner includes an outdoor unit casing, an outdoor fan, an outdoor heat exchanger, a compressor, and the aforementioned electrical control box device. The outdoor unit casing has an outdoor air inlet and an outdoor air outlet. The outdoor fan is disposed inside the outdoor unit casing and is used to drive airflow from the outdoor air inlet to the outdoor air outlet, and to drive airflow from the airflow inlet to the airflow outlet. The outdoor heat exchanger and the compressor are disposed inside the outdoor unit casing, and the electrical control box device is disposed inside the outdoor unit casing.

[0024] According to the embodiment of the present invention, the outdoor unit of the air conditioner, by applying the aforementioned electrical control box device, has good heat dissipation efficiency, which can improve the working performance of the outdoor unit of the air conditioner.

[0025] Optionally, the outdoor unit housing has a first chamber and a second chamber, the outdoor fan and the outdoor heat exchanger are located in the first chamber, the compressor is located in the second chamber, the airflow outlet is located in the first chamber, and the airflow inlet is located in the second chamber.

[0026] Optionally, the outdoor unit housing also has an electrically controlled air inlet, which is located on the wall of the second chamber and is opposite to the airflow inlet.

[0027] Optionally, the outdoor unit of the air conditioner further includes a throttling component, which is disposed inside the outdoor unit housing, and the air cooler and the electronically controlled radiator are connected between the outdoor heat exchanger and the throttling component.

[0028] According to an embodiment of the present invention, the air conditioning system includes the outdoor unit described above.

[0029] According to the embodiment of the present invention, the air conditioning system, by applying the aforementioned outdoor air conditioning unit, has a control box device with good heat dissipation efficiency, which can improve the working performance of the air conditioning system. Attached Figure Description

[0030] Figure 1 This is a partial structural diagram of the electrical control box device in some embodiments of this utility model.

[0031] Figure 2 This is an assembly diagram of the electrical control box device in the second chamber in some embodiments of this utility model.

[0032] Figure 3 This is an exploded view of the electrical control box device in some embodiments of this utility model (the electrical control box body and air cooler are not shown).

[0033] Figure 4 This is a structural diagram of the electronically controlled heat sink in some embodiments of this utility model.

[0034] Figure 5 This is a schematic diagram of an electronically controlled radiator in some embodiments of this utility model (the first refrigerant pipe and the second refrigerant pipe are connected in series).

[0035] Figure 6 This is a schematic diagram of an electrically controlled radiator in some embodiments of this utility model (the first refrigerant pipe and the second refrigerant pipe are connected in parallel).

[0036] Figure 7 This is a schematic diagram of an outdoor unit of an air conditioner in some embodiments of this utility model.

[0037] Figure label:

[0038] The components include: outdoor air conditioner unit 1000, electrical control box device 100, electrical control box body 10, second housing 11, heat dissipation duct 111, air outlet 112, air inlet 113, through hole 114, first housing 12, clearance space 13, sheet metal shell 14, electrical control board 20, first board part 21, second board part 22, first component 30, second component 40, electrically controlled radiator 50, first refrigerant pipe 51, first main body 52, second main body 53, air cooler 60, second refrigerant pipe 61, support frame 70, support part 71, positioning part 72, outdoor unit housing 200, first chamber 210, second chamber 220, outdoor air outlet 300, outdoor heat exchanger 400, electrically controlled air inlet 500, width direction AA, length direction BB, thickness direction CC. Detailed Implementation

[0039] 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.

[0040] This utility model proposes an electrical control box device 100, which can adopt different heat dissipation methods for various components to optimize the heat dissipation efficiency of the electrical control box device 100. It also proposes an air conditioner outdoor unit 1000 and an air conditioning system.

[0041] like Figures 1 to 6 According to the embodiment of the present utility model, the electrical control box device 100 includes an electrical control box body 10, an electrical control board 20, a first component 30, a second component 40, an air cooler 60, and an electrical control heat sink 50.

[0042] The electrical control box 10 has a heat dissipation duct 111, an airflow inlet 113, and an airflow outlet 112. The heat dissipation duct 111 connects the airflow inlet 113 and the airflow outlet 112. The electrical control board 20 is located inside the electrical control box 10 and includes a first plate portion 21 and a second plate portion 22 arranged along a first direction. The second plate portion 22 is located in the heat dissipation duct 111. A first component 30 is located in the first plate portion 21, and a second component 40 is located in the second plate portion 22. The heat generation of the first component 30 is greater than that of the second component 40. An air cooler 60 is located on the air inlet side of the electrical control box 10 and is configured to cool the airflow flowing towards the heat dissipation duct 111. An electrical control heat sink 50 is located in the electrical control box 10 and is thermally connected to the first component 30. It is configured to use a refrigerant to dissipate heat from the first component 30. In this way, the heat dissipation efficiency of the electrical control device can be optimized and the heat dissipation effect can be improved.

[0043] Specifically, the electrical control box 10 is equipped with an electrical control board 20, which includes a first board portion 21 and a second board portion 22. The first board portion 21 and the second board portion 22 are arranged along a first direction. A first component 30 is disposed on the first board portion 21, and a second component 40 is disposed on the second board portion 22, thereby realizing the partitioned arrangement of the first component 30 and the second component 40 on the electrical control board 20. Since the heat generated by the first component 30 is greater than that of the second component 40, the first component 30 can be cooled by refrigerant, and the second component 40 can be cooled by air.

[0044] More specifically, for air cooling of the second component 40: the second plate 22 is located in the heat dissipation duct 111, and the second component 40 on the second plate 22 can also be located within the heat dissipation duct 111; during air cooling, the air cooler 60 cools the airflow flowing towards the heat dissipation duct 111, so that the airflow, after being cooled, flows along the airflow inlet 113, the heat dissipation duct 111, and the airflow outlet 112 of the electrical control box 10, and performs air cooling of the second component 40. For refrigerant cooling of the first component 30: the electrical control heat sink 50 is thermally connected to the first component 30, and when the refrigerant flows through the electrical control heat sink 50, it can exchange heat with the first component 30, thereby achieving refrigerant cooling of the first component 30.

[0045] Therefore, the electrical control box device 100 according to the present utility model embodiment arranges various components in separate zones and adopts different heat dissipation methods for components in different areas, thereby optimizing the heat dissipation efficiency of the electrical control box device 100.

[0046] It should be explained that the electronically controlled radiator 50 dissipates heat from the first component 30 using refrigerant. The refrigerant in the electronically controlled radiator 50 can be the refrigerant in the refrigerant circulation loop of the air conditioning system, or it can be input from an additional refrigerant source.

[0047] like Figure 3 In some embodiments of this utility model, the first component 30 is configured as a power device. It can be understood that the first component 30 can be a rectifier bridge, IGBT (Insulated-Gate Bipolar Transistor), or FRD (Fast Recovery Diode) and other power devices. The first component 30 can also include a fan module, a compressor module, and a flat surface mount device of the power device. The aforementioned devices generate relatively large amounts of heat. Therefore, these devices can be arranged on the first plate 21 and cooled by a refrigerant to improve the heat dissipation effect.

[0048] In addition, the second component 40 is set as a passive component. It can be understood that the second component 40 can be a common mode inductor, PFC inductor, capacitor, power supply and other passive components. The aforementioned components generate relatively little heat. Therefore, these components can be arranged on the second board 22 and cooled by air cooling to improve the heat dissipation effect. Cooling the airflow before air cooling can further improve the heat dissipation effect.

[0049] like Figures 1 to 3In some embodiments of this utility model, the airflow inlet 113 and the airflow outlet 112 are opposite each other along the second direction. In the projection of the second direction, the second component 40 at least partially overlaps with the airflow inlet 113 or the airflow outlet 112. It can be understood that in the second direction, at least a portion of the second component 40 may be exposed in the airflow inlet 113 or the airflow outlet 112. When the airflow flows along the airflow inlet 113, the heat dissipation duct 111 and the airflow outlet 112, the second component 40 may be located in the airflow path to improve the airflow cooling effect on the second component 40.

[0050] Furthermore, the first direction intersects the second direction; specifically, the first direction and the second direction can have an angle α greater than 0° to avoid the first component 30 blocking the airflow through the second component 40, thus affecting the air-cooling effect of the second component 40; preferably, the first direction is perpendicular to the second direction. Conversely, if the first direction is parallel to the second direction, the first component 30 on the control board 20 will obstruct the airflow, affecting the air-cooling heat dissipation of the second component 40, and failing to achieve the purpose of separate heat dissipation. Figure 1 , Figure 5 and Figure 6 As shown, the first direction can be the width direction of the electrical control box 10, the second direction can be the length direction of the electrical control box 10, and the third direction can be the thickness direction of the electrical control box 10.

[0051] like Figure 1 and Figure 2 , Figure 5 and Figure 6 In some embodiments of this utility model, the air cooler 60 covers the airflow inlet 113 and is provided with an airflow channel opposite to the airflow inlet 113; thus, when the second component 40 dissipates heat, the airflow needs to pass through the airflow channel of the air cooler 60 before entering the heat dissipation duct 111, and the air cooler 60 cools the airflow, so that the airflow can quickly reach the predetermined temperature, which facilitates the air cooling of the second component 40 and improves the heat dissipation effect of the second component 40.

[0052] like Figure 5 and Figure 6 In some embodiments of this utility model, the air cooler 60 includes a second refrigerant pipe 61, which is configured to use refrigerant to cool the airflow flowing toward the heat dissipation duct 111; thus, by using refrigerant to cool the airflow flowing toward the heat dissipation duct 111, the air cooler 60 can improve the cooling effect of the airflow, thereby improving the heat dissipation effect of the second component 40.

[0053] It should be explained that the refrigerant in the second refrigerant pipe 61 can be sourced from the refrigerant circulation loop of the air conditioning system, or it can be input from an additional refrigerant source.

[0054] In some embodiments of this utility model, the air cooler 60 includes a plurality of heat dissipation fins and a second refrigerant pipe 61. The plurality of heat dissipation fins are arranged at intervals at the airflow inlet 113, and the heat dissipation fins are provided with through holes. The second refrigerant pipe 61 passes through the through holes. In this way, the cooling effect on the airflow can be improved, thereby improving the heat dissipation effect on the second component 40.

[0055] Understandably, multiple heat dissipation fins are thermally connected to the second refrigerant pipe 61. These fins increase the heat transfer area between the second refrigerant pipe 61 and the airflow, thereby improving the cooling effect of the second refrigerant pipe 61 on the airflow and thus enhancing the heat dissipation effect on the second component 40. Furthermore, the heat dissipation fins are provided with through holes, allowing the second refrigerant pipe 61 to be inserted and positioned, ensuring stable cooling of the airflow.

[0056] In addition, multiple heat dissipation fins are arranged at intervals and set at the airflow inlet 113, so that an airflow channel is formed between the multiple heat dissipation fins opposite to the airflow inlet 113.

[0057] like Figure 1 and Figure 2 , Figure 5 and Figure 6 In some embodiments of this utility model, the air cooler 60 is located outside the electrical control box 10; this facilitates the assembly of the air cooler 60. Specifically, the air cooler 60 includes multiple heat dissipation fins and a second refrigerant pipe 61. The second refrigerant pipe 61 needs to be inserted through the through holes of the heat dissipation fins, and the multiple heat dissipation fins need to be connected to the edge of the airflow inlet 113 to achieve the installation of the air cooler 60. If the air cooler 60 is located inside the electrical control box 10, it is difficult to complete the operation of inserting the second refrigerant pipe 61 through the through holes, making the installation more complex and inconvenient. Therefore, the air cooler 60 can be located outside the electrical control box 10 to improve assembly efficiency.

[0058] like Figure 1 and Figure 2 , Figure 5 and Figure 6 In some embodiments of this utility model, the airflow inlet 113 has an inner edge facing the inside of the electrical control box 10 and an outer edge facing away from the inside of the electrical control box 10, and the air cooler 60 is disposed on the outer edge of the airflow inlet 113; in this way, it is convenient to assemble the air cooler 60 and can improve the cooling effect of the air cooler 60 on the airflow.

[0059] Specifically, the air cooler 60 is located near the edge of the airflow inlet 113, which can enhance the cooling effect of the air cooler 60 on the airflow passing through the airflow inlet 113; and in conjunction with the above, the air cooler 60 is easier to assemble and improves assembly efficiency when it is located on the outside of the airflow inlet 113 than on the inside of the airflow inlet 113.

[0060] like Figure 3 In some embodiments of this utility model, the control board 20 has two opposing sides along the thickness direction, and the first component 30 and the second component 40 are disposed on the same side of the control board 20. In this way, when the airflow flows through the heat dissipation duct 111, the airflow can flow along the second plate portion 22 and dissipate heat on the second component 40 on the second plate portion 22. Due to the high airflow velocity, a low-pressure area can be created to draw in the airflow near the first plate portion 21, thereby achieving the effect of air cooling for the first component 30. Thus, in actual practice, the first component 30 on the first plate portion 21 can achieve refrigerant heat dissipation and air cooling, and the second component 40 on the second plate portion 22 can achieve air cooling. The combination of these two can improve the heat dissipation effect of the control box device 100, thereby improving the working performance of the outdoor unit 1000 of the air conditioner.

[0061] As described above, the air cooler 60 uses refrigerant to cool the airflow towards the heat dissipation duct 111, and the electronically controlled radiator 50 uses refrigerant to dissipate heat from the first component 30. Therefore, the second refrigerant pipe 61 of the air cooler 60 and the first refrigerant pipe 51 of the electronically controlled radiator 50 can be connected in series or in parallel to share the same refrigerant source, reducing costs and improving the integration of the electronic control box device 100, thereby increasing the space utilization of the outdoor unit 1000. The following specific implementation method is provided for illustration:

[0062] Implementation Method 1

[0063] like Figure 5 The electronically controlled radiator 50 includes a first refrigerant pipe 51, and the air cooler 60 includes a second refrigerant pipe 61. The first refrigerant pipe 51 and the second refrigerant pipe 61 are connected in series. In this way, the first refrigerant pipe 51 and the second refrigerant pipe 61 can share a refrigerant source and improve space utilization. Moreover, the connection order of the first refrigerant pipe 51 and the second refrigerant pipe 61 can be adjusted according to the actual heat dissipation requirements. For example, when the first component 30 has higher heat dissipation requirements, the first refrigerant pipe 51 can be connected in series upstream of the second refrigerant pipe 61. The refrigerant flows through the first refrigerant pipe 51 and dissipates heat from the first component 30 before flowing to the second refrigerant pipe 61 and cooling the airflow, so as to make reasonable use of the refrigerant and improve the heat dissipation effect.

[0064] Implementation Method 2

[0065] like Figure 6The electronically controlled radiator 50 includes a first refrigerant pipe 51, and the air cooler 60 includes a second refrigerant pipe 61. The first refrigerant pipe 51 and the second refrigerant pipe 61 are connected in parallel. In this way, the first refrigerant pipe 51 and the second refrigerant pipe 61 can share a single refrigerant source, which can improve space utilization. Furthermore, the refrigerant can be evenly distributed to the first refrigerant pipe 51 and the second refrigerant pipe 61 to meet the heat dissipation requirements of the first component 30 and the second component 40. In addition, the air cooler 60 also includes a first body 52 and a second body 53, which are connected. The second refrigerant pipe 61 is positioned between the first body 52 and the second body 53 and is thermally connected to both the first body 52 and the second body 53. The first body 52 can make thermal contact with the first component 30, and the second body 53 is positioned on the support frame 70.

[0066] like Figure 1 and Figure 2 , Figure 5 and Figure 6 In some embodiments of this utility model, the electrical control box 10 includes an inner box, which includes a first housing 12 and a second housing 11 connected along a third direction. The electrical control board 20 can be installed in the first housing 12 by means of embedding, fastener connection, etc. The components on the electrical control board 20 are located in the second housing 11. The second housing 11 is constructed with a heat dissipation duct 111 and a through hole 114. An airflow inlet 113 and an airflow outlet 112 are formed on the second housing 11. The heat dissipation duct 111 and the through hole 114 are arranged along a first direction, so that the first component 30 on the first plate 21 corresponds to the through hole 114, and the second component 40 on the second plate 22 corresponds to the heat dissipation duct 111. This facilitates the first component 30 to achieve refrigerant heat dissipation with the help of the electrical control heat sink 50, and facilitates the second component 40 to achieve heat dissipation with the help of the cold air from the heat dissipation duct 111.

[0067] Specifically, the first plate portion 21 and the electronically controlled heat sink 50 are respectively located on opposite sides of the through hole 114 along a third direction. The first component 30 passes through the through hole 114 for thermally conductive connection with the electronically controlled heat sink 50, thus enabling the first component 30 to dissipate heat via a refrigerant. The air cooler 60 is located at the airflow inlet 113, and the airflow entering the heat dissipation duct 111 from the airflow inlet 113 is cooled by the air cooler 60 to improve the air-cooling effect of the second component 40. It should be noted that the third direction is perpendicular to both the first and second directions.

[0068] like Figure 1 and Figure 2 , Figure 5 and Figure 6In some embodiments of this utility model, in order to ensure the safe operation of the electrical control box device 100, the inner box is generally made of insulating plastic, resulting in low structural strength of the inner box. Therefore, the electrical control box 10 also includes a sheet metal shell 14, which covers the outside of the inner box. In this way, the inner box can be installed on the outdoor unit 1000 of the air conditioner through the sheet metal shell 14 to improve the installation strength and ensure the good operation of the electrical control box device 100. In addition, a clearance space 13 is formed between the inner box and the sheet metal shell 14, and the electrical control radiator 50 can be set in the clearance space 13, which can improve the space utilization of the electrical control box device 100.

[0069] like Figure 1 and Figure 2 , Figure 5 and Figure 6 In some embodiments of this utility model, the electrical control box device 100 further includes a support frame 70; specifically, the support frame 70 includes a support portion 71 and a positioning portion 72. The support portion 71 is disposed on the positioning portion 72 and can support the electrical control heat sink 50, so that the electrical control heat sink 50 is in close contact with the first component 30, thereby improving the heat dissipation effect of the electrical control heat sink 50 on the first component 30. The electrical control heat sink 50 includes a second refrigerant pipe 61, and the positioning portion 72 has a positioning groove. The second refrigerant pipe 61 can be embedded in the positioning groove to improve the operational stability of the electrical control heat sink 50. Furthermore, since the sheet metal shell 14 has high structural strength, the support frame 70 can be disposed inside the sheet metal shell 14 and located in the clearance space 13 to support the electrical control heat sink 50 and improve the space utilization efficiency of the electrical control box device 100.

[0070] More specifically, in the third direction, the electronically controlled heat sink 50 is located on the side of the support frame 70 near the through hole 114, which facilitates better thermal conductivity between the electronically controlled heat sink 50 and the first component 30, thereby improving the heat dissipation effect on the first component 30.

[0071] In addition, combined Figure 1 and Figure 2 , Figure 5 and Figure 6 It can be seen that the sheet metal shell 14 is also provided with an air duct, which is opposite to the air outlet 112, so that the airflow can be discharged through the air outlet 112 and the air duct.

[0072] like Figures 1 to 7 According to the embodiment of the present utility model, the outdoor unit 1000 of the air conditioner includes an outdoor unit housing 200, an outdoor fan, an outdoor heat exchanger 400, a compressor, and the electrical control box device 100 in the above embodiment.

[0073] The outdoor unit housing 200 has an outdoor air inlet and an outdoor air outlet 300. An outdoor fan is located inside the outdoor unit housing 200 and is used to drive airflow from the outdoor air inlet to the outdoor air outlet 300 and to drive airflow from the air inlet 113 to the air outlet 112. An outdoor heat exchanger 400 and a compressor are located inside the outdoor unit housing 200. An electrical control box device 100 is located inside the outdoor unit housing 200. By applying the aforementioned electrical control box device 100, the electrical control box device 100 has good heat dissipation efficiency and can improve the working performance of the air conditioner outdoor unit 1000.

[0074] Heat dissipation principle:

[0075] When the outdoor unit 1000 of the air conditioner is running, the outdoor fan can drive the airflow from the outdoor air inlet to the outdoor air outlet 300, thereby forming a low-pressure area inside the outdoor unit casing 200. This low-pressure area can drive the airflow from the airflow inlet 113 of the electrical control box device 100 to the airflow outlet 112, thereby providing air cooling for the second component 40 inside the electrical control box device 100. During this process, the first refrigerant pipe 51 and the second refrigerant pipe 61 are connected in the refrigerant circulation loop of the air conditioning system. The first refrigerant pipe 51 uses refrigerant to dissipate refrigerant heat from the first component 30, and the second refrigerant pipe 61 uses refrigerant to cool the airflow flowing to the heat dissipation duct 111, thereby improving the heat dissipation effect on the second component 40.

[0076] Furthermore, the airflow inlet 113 and the airflow outlet 112 are opposite each other along the second direction. In the projection of the second direction, the second component 40 at least partially overlaps with the airflow inlet 113 or the airflow outlet 112, so that the airflow can flow through the second component 40 as much as possible, thereby improving the heat dissipation effect on the second component 40. The first plate portion 21 and the second plate portion 22 of the electronic control board 20 are arranged along the first direction, and the first direction intersects the second direction, so as to realize the partitioned arrangement of components on the electronic control board 20 and separate heat dissipation, thereby improving the heat dissipation effect.

[0077] like Figure 2 and Figure 7 In some embodiments of this utility model, the outdoor unit housing 200 has a first chamber 210 and a second chamber 220. The outdoor fan and outdoor heat exchanger 400 are located in the first chamber 210, and the compressor is located in the second chamber 220. This arrangement can prevent the outdoor fan from throwing water droplets onto the compressor and affecting the operation of the compressor. Furthermore, the air outlet 112 is located in the first chamber 210, and the air inlet 113 is located in the second chamber 220, thereby improving the integration of the air conditioning system and increasing space utilization.

[0078] like Figure 7In some embodiments of this utility model, the outdoor unit housing 200 also has an electrically controlled air inlet 500, which is opened on the wall of the second chamber 220 and is opposite to the airflow inlet 113. It can be understood that by providing the additional electrically controlled air inlet 500, airflow can be facilitated to the electrically controlled box device 100, and the electrically controlled box device 100 can be cooled, thereby improving the heat dissipation efficiency.

[0079] In some embodiments of this utility model, the outdoor unit 1000 of the air conditioner also includes a throttling component, which is disposed inside the outdoor unit housing 200. The air cooler 60 and the electronically controlled radiator 50 are connected between the outdoor heat exchanger 400 and the throttling component. In this way, heat dissipation of the electronically controlled box device 100 can be achieved while preventing the electronically controlled box device 100 from being damaged by moisture.

[0080] Specifically, the refrigerant circulation loop of the air conditioning system includes a compressor, an outdoor heat exchanger 400, an indoor heat exchanger, and a throttling device. The compressor, outdoor heat exchanger 400, throttling device, and indoor heat exchanger are connected in sequence to form a refrigerant circulation loop. During cooling, the refrigerant pipe between the outdoor heat exchanger 400 and the throttling device contains medium-temperature, high-pressure refrigerant. The first refrigerant pipe 51 of the electronically controlled radiator 50 and the second refrigerant pipe 61 of the air cooler 60 can be connected between the outdoor heat exchanger 400 and the throttling device. The medium-temperature, high-pressure refrigerant is used to perform air cooling and refrigerant cooling on the electronically controlled box device 100. In this way, the moisture in the airflow flowing through the heat dissipation duct 111 will not reach the dew point, and therefore condensation will not be generated inside the electronically controlled box device 100, thereby preventing the components inside the electronically controlled box device 100 from being damaged by moisture.

[0081] like Figures 1 to 7 According to the air conditioning system of the present utility model embodiment, the air conditioning system includes the air conditioning outdoor unit 1000 in the above embodiment. By applying the aforementioned air conditioning outdoor unit 1000, its electrical control box device 100 has good heat dissipation efficiency, which can improve the working performance of the air conditioning system.

[0082] It should be noted that other specific implementations of the air conditioning system proposed in this utility model embodiment can be found in the specific implementations of the air conditioning outdoor unit 1000 and the electrical control box device 100 in the aforementioned utility model embodiment. To reduce redundancy, they will not be described again here.

[0083] This utility model proposes an electronic control structure and method for enhancing air cooling and refrigerant heat dissipation, which includes an electronic control box assembly, a right side panel louver (i.e., an electronic control air inlet 500), an electronic control box cover, a PCB board (i.e., an electronic control board 20), a component bracket (a component of the support frame 70), a component heat sink (a component of the electronic control heat sink 50), a refrigerant copper pipe (i.e., a first refrigerant pipe 51), a heat sink (a component of the electronic control heat sink 50), a support (a component of the support frame 70), a support sheet metal (i.e., a sheet metal shell 14), and a sheet metal louver (i.e., an airflow inlet 113).

[0084] Among them, the power devices under the refrigerant loop (including rectifier bridge, IGBT, FRD, fan module, compressor module, and flat surface mount devices) are arranged on one side of the control board 20, and the remaining devices (common mode inductor, PFC inductor, capacitor, power supply, etc.) are all arranged on the other side of the control board 20.

[0085] The refrigerant ring heat sink is designed based on the layout of power devices under the refrigerant ring. On the other side of the electronic control board 20, sheet metal louvers are provided on the supporting sheet metal and the right side panel for other devices. In the fan chamber (i.e., the first chamber 210), due to the high-speed rotation of the outdoor fan, a relatively low-pressure area is formed. Air enters the compressor chamber (i.e., the second chamber 220) through the right side panel louvers (i.e., the electronic control air inlet 500) on the right side panel, and then blows towards the small evaporator (i.e., the air cooler 60). The cooled air from the small evaporator blows towards modules such as common-mode inductors, PFC inductors, capacitors, and power supplies. Afterwards, it enters the low-pressure area on the fan side through the sheet metal louvers on the supporting sheet metal, carrying away its heat, thus achieving a heat dissipation effect. By guiding and directing the airflow through the right side panel and the supporting sheet metal box, more cold air can flow through the devices, reducing air loss and ensuring air velocity to achieve the desired air-cooling effect.

[0086] Compared to refrigerant cooling in related technologies, this embodiment adds a heat dissipation duct 111 to the inductors and other components on the other side of the control board 20, and adds a small evaporator at the inlet of the heat dissipation duct 111. Outside air is cooled by the small evaporator and then cools the inductors and other components through the heat dissipation duct 111. The main advantage is the increased cooling effect of the small evaporator's cold air on the inductors within the duct. The small evaporator is connected to the original refrigerant ring via series or parallel connection. In this way, by partitioning the control circuit, different heat dissipation methods are implemented for the components. While providing refrigerant cooling for high-power components, louvers are opened in the right side panel and sheet metal support box to introduce airflow for cooling the inductors and capacitors, enabling the control circuit to operate normally under high-temperature conditions. The component temperature under the embedded copper pipe heat sink is 5 degrees Celsius lower than that of a regular refrigerant ring heat sink, and the heat dissipation through the duct reduces the component temperature by 10 degrees Celsius compared to mass production.

[0087] In the description of this utility model, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] 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.

[0090] 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 the different embodiments or examples.

[0091] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electrical control box device, characterized in that, include: An electrical control box, the electrical control box having a heat dissipation duct, an airflow inlet and an airflow outlet, the heat dissipation duct connecting the airflow inlet and the airflow outlet; An electronic control board is disposed inside the electronic control box and includes a first plate portion and a second plate portion arranged along a first direction, wherein the second plate portion is located in the heat dissipation air duct; A first component and a second component, wherein the first component is disposed on the first plate and the second component is disposed on the second plate, and the heat generated by the first component is greater than the heat generated by the second component. An air cooler is located on the air inlet side of the electrical control box and is configured to cool the airflow flowing towards the heat dissipation duct. An electronically controlled heat sink is disposed in the electronically controlled housing and is thermally connected to the first component, and is configured to dissipate heat from the first component using a refrigerant.

2. The electrical control box device according to claim 1, characterized in that, The first component is a power device, and the second component is a passive device.

3. The electrical control box device according to claim 1, characterized in that, The airflow inlet and the airflow outlet are opposite each other along a second direction. In the projection of the second direction, the second component at least partially overlaps with the airflow inlet or the airflow outlet. The first direction intersects the second direction.

4. The electrical control box device according to claim 1, characterized in that, The air cooler covers the airflow inlet and has an airflow channel opposite to the airflow inlet.

5. The electrical control box device according to claim 1, characterized in that, The air cooler includes a second refrigerant pipe configured to cool the airflow flowing toward the heat dissipation duct using refrigerant.

6. The electrical control box device according to claim 1, characterized in that, The air cooler includes multiple heat dissipation fins and a second refrigerant pipe. The multiple heat dissipation fins are arranged at intervals at the airflow inlet. The heat dissipation fins are provided with through holes, and the second refrigerant pipe passes through the through holes.

7. The electrical control box device according to claim 1, characterized in that, The air cooler is located outside the electrical control box.

8. The electrical control box device according to claim 1, characterized in that, The airflow inlet has an inner edge facing the inside of the electrical control box and an outer edge facing away from the inside of the electrical control box, and the air cooler is located on the outer edge of the airflow inlet.

9. The electrical control box device according to claim 1, characterized in that, The control board has two opposing sides along the thickness direction, and the first component and the second component are located on the same side of the control board.

10. The electrical control box device according to claim 1, characterized in that, The electronically controlled radiator includes a first refrigerant pipe, and the air cooler includes a second refrigerant pipe. The first refrigerant pipe and the second refrigerant pipe are connected in series; or, the first refrigerant pipe and the second refrigerant pipe are connected in parallel.

11. The electrical control box device according to claim 1, characterized in that, The electrical control box includes an inner box, which includes a first housing and a second housing connected along a third direction. The electrical control board is installed in the first housing, and the components on the electrical control board are located in the second housing. The second housing has a heat dissipation duct and a through hole. The second housing has an airflow inlet and an airflow outlet. The heat dissipation duct and the through hole are arranged along the first direction. The first plate and the electrical control heat sink are respectively located on opposite sides of the through hole along the third direction. The first component passes through the through hole to be thermally connected to the electrical control heat sink. The third direction is perpendicular to the first direction.

12. The electrical control box device according to claim 11, characterized in that, The electrical control box also includes a sheet metal shell, which covers the outside of the inner box, and a clearance space is formed between the inner box and the sheet metal shell. The electrical control heat sink is located in the clearance space.

13. The electrical control box device according to claim 12, characterized in that, It also includes a support frame, which is disposed inside the sheet metal shell and located in the clearance space, for positioning and supporting the electronically controlled heat sink. In the third direction, the electronically controlled heat sink is located on the side of the support frame near the through hole.

14. An outdoor unit for an air conditioner, characterized in that, include: An outdoor unit housing, wherein the outdoor unit housing has an outdoor air inlet and an outdoor air outlet; An outdoor fan, which is located inside the outdoor unit housing, is used to drive airflow from the outdoor air inlet to the outdoor air outlet, and to drive airflow from the airflow inlet to the airflow outlet. An outdoor heat exchanger and a compressor, wherein the outdoor heat exchanger and the compressor are disposed within the outdoor unit housing; The electrical control box device according to any one of claims 1-13, wherein the electrical control box device is disposed inside the outdoor unit housing.

15. The outdoor unit of the air conditioner according to claim 14, characterized in that, The outdoor unit housing has a first chamber and a second chamber. The outdoor fan and the outdoor heat exchanger are located in the first chamber, the compressor is located in the second chamber, the airflow outlet is located in the first chamber, and the airflow inlet is located in the second chamber.

16. The outdoor unit of the air conditioner according to claim 15, characterized in that, The outdoor unit casing also has an electronically controlled air inlet, which is located on the wall of the second chamber and is opposite to the airflow inlet.

17. The outdoor unit of the air conditioner according to claim 14, characterized in that, It also includes a throttling component, which is located inside the outdoor unit housing, and the air cooler and the electronically controlled radiator are connected between the outdoor heat exchanger and the throttling component.

18. An air conditioning system, characterized in that, The outdoor unit of the air conditioner includes any one of claims 14-17.

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