Electric appliance box assembly for air conditioner and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, particularly provides an electric appliance box assembly for an air conditioner and the air conditioner, and aims to solve the problem that an electric appliance box of an existing air conditioner is poor in heat dissipation performance. In order to achieve the purpose, the utility model provides the electric appliance box assembly for the air conditioner, and the electric appliance box assembly comprises an electric appliance box shell; the at least one circuit board is located in the electric appliance box shell, and at least one electronic component is arranged on the circuit board; the at least one heat exchange piece is connected with at least one part of the surface of the electronic component and performs heat exchange, and the part, in contact with the electronic component, of the heat exchange piece is arranged to be of a shape follow-up structure capable of being attached to the electronic component. According to the utility model, the heat exchange member is connected with the electronic component, so that the heat of the electronic component in the electric appliance box shell can be dissipated through the heat exchange member, and the heat dissipation performance of the electric appliance box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and specifically provides an electrical box component for an air conditioner and an air conditioner. Background Art

[0002] Air conditioning refers to equipment that regulates and controls the ambient air in a building or structure by artificial means. The cooling / heating system of an air conditioner mainly includes a compressor, an evaporator, a throttling device and a condenser, which are connected to form a closed-loop refrigerant circulation circuit. The normal operation of an air conditioner is inseparable from the electronic control device. For example, the electronic control device installed in the outdoor unit of the air conditioner is generally installed in a fully enclosed box made of sheet metal, usually called an electrical box.

[0003] Traditional air conditioner electrical boxes mainly rely on natural convection to dissipate heat. However, with the rapid development of electronic technology, the heat flux density of electronic components in the electrical box is getting higher and higher, and the heat generated by the electrical box is also getting higher and higher. Traditional heat dissipation methods can no longer meet the needs.

[0004] In order to solve the above problems, some electrical boxes are equipped with corresponding heat sinks and fans. By opening a hole on the back of the electrical box, regular-shaped power devices such as PIM (Power Integrated Module), IPM (Intelligent Power Module), IGBT (Insulated Gate Bipolar Transistor) are placed on the back of the circuit board, and directly attached to the air-cooled heat sink outside the electrical box through the back opening, so that the air conditioner outdoor fan drives the air flow to exchange heat with the air-cooled heat sink fins, or directly attached to the surface of the refrigerant radiator through the back opening, so that the heat is removed by the refrigerant convection heat exchange to improve the heat dissipation effect. Other devices such as inductors, capacitors, transformers and other irregular-shaped electronic components mainly exchange heat with the air in the box through convection, and take away heat from the heat dissipation holes, and the heat dissipation effect is poor. At the same time, due to the current "three protection" (anti-corrosion, anti-salt spray, and anti-mildew) requirements of electronic equipment, as well as the harsh outdoor environment of the air conditioner outdoor unit, there are also requirements for waterproofing, pest prevention, and dust prevention, so the use of a fully enclosed shell design to ensure the requirements of a high level of protection undoubtedly further increases the difficulty of heat dissipation of special-shaped electronic components in the box. In the existing fully enclosed electrical box heat dissipation solution, although cooling fans are generally used to enhance the air flow disturbance inside the box and transfer heat to the surface of the electric control box or the refrigerant radiator by thermal convection, the efficiency of this heat dissipation method is relatively low, and the presence of cooling fans may cause a decrease in system reliability.

[0005] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the above technical problem, that is, to solve the problem that the heat dissipation performance of the electrical box of the existing air conditioner is poor.

[0007] In a first aspect, the utility model provides an electrical box assembly for an air conditioner, the electrical box assembly comprising:

[0008] Electrical box housing;

[0009] At least one circuit board, which is located inside the housing of the electrical box, and at least one electronic component is arranged on the circuit board;

[0010] at least one heat exchange element connected to at least a portion of the surface of the electronic component to exchange heat,

[0011] Wherein, the portion of the heat exchanger that contacts the electronic component is configured as a conformal structure that can fit the electronic component.

[0012] It should be noted that electronic components can be high-heat or high-power components, or they can be irregularly shaped components or components that are difficult to attach to a flat mounting surface, such as capacitors, relays, transformers, reactors or inductors, etc.

[0013] It should be noted that the conformal structure of the heat exchanger is constructed according to the corresponding structure of the part that contacts the electronic component. For example, if the electronic component is a capacitor element, and the shape of the capacitor element is a cylinder or a nearly cylindrical shape, the conformal structure of the heat exchanger can be constructed as an arc-shaped shape that can fit the side of the capacitor element, and specifically the heat exchanger can be contacted and connected with the side of the capacitor element; if the electronic component is a relay, and the shape of the relay is a rectangular parallelepiped or a nearly rectangular parallelepiped, the conformal structure of the heat exchanger can be constructed as a straight surface that can fit the side or top surface of the relay that is not in contact with the circuit board, and specifically the heat exchanger can be contacted and connected with the side of the relay.

[0014] In some feasible embodiments of the electrical box assembly for an air conditioner, the heat exchanger is a component having a refrigerant flowing through an internal flow channel, and the internal flow channel of the heat exchanger is connected to a refrigerant circulation circuit of the air conditioner; or

[0015] The heat exchange element is a microchannel; or

[0016] The heat exchange element is a heat pipe.

[0017] In some feasible implementations of the above-mentioned electrical box assembly for air conditioners, a heat-conducting layer is provided between the heat exchange element and the electronic components.

[0018] It is understandable that the material of the thermal conductive layer can be a thermal conductive interface material such as thermal grease (heat dissipation paste), thermal conductive silicone sheet (thermal conductive gasket), thermal conductive gel, thermal conductive phase change material, potting glue (such as thermal conductive curing glue, AB glue, thermal conductive glue), etc.

[0019] In some feasible implementations of the above-mentioned electrical box assembly for an air conditioner, the heat conductive layer is disposed between the heat exchange element and the electronic component in a continuous or at least partially discontinuous manner.

[0020] In some feasible implementations of the above-mentioned electrical box assembly for air conditioners, the plurality of electronic components are arranged in at least two rows, and the heat exchange element is disposed between two adjacent rows of electronic components.

[0021] In some feasible embodiments of the above-mentioned electrical box assembly for air conditioners, a plurality of the electronic components are arranged at intervals on the circuit board, and the heat exchange element is configured to continuously pass through the gap between two adjacent electronic components in the same row in a serpentine manner, and is respectively connected to the electronic components on both sides of the gap.

[0022] In some feasible implementations of the above-mentioned electrical box assembly for air conditioners, the number of the heat exchange components is equal to the number of the circuit boards, and each circuit board is adapted to be equipped with one heat exchange component.

[0023] In some feasible embodiments of the above-mentioned electrical box assembly for an air conditioner, the heat exchange component includes a plurality of refrigerant sub-pipes connected to the refrigerant circulation circuit of the air conditioner, and each circuit board is equipped with one refrigerant sub-pipe.

[0024] It should be noted that the refrigerant sub-pipe is a component in which the refrigerant flows through the internal flow channel.

[0025] In some feasible implementations of the above-mentioned electrical box assembly for air conditioners, the electronic components are capacitors, and / or relays, and / or transformers, and / or reactors, and / or inductors.

[0026] In some feasible implementations of the above-mentioned electrical box assembly for an air conditioner, the plurality of electronic components are distributed on at least two of the circuit boards.

[0027] In a second aspect, the utility model further provides an air conditioner, comprising the electrical box assembly for an air conditioner as described in any of the aforementioned technical solutions.

[0028] It is understandable that the heat exchange element in the electrical box can be arranged so that its internal channel is connected to the refrigerant circulation circuit of the air conditioner, or a dedicated heat exchanger can be configured for the heat exchange element in the electrical box to dissipate heat.

[0029] The electrical box assembly provided by the utility model is connected with the electronic components by arranging a heat exchanger, so that the electronic components inside the electrical box shell can dissipate heat through the heat exchanger, thereby improving the heat dissipation performance of the electrical box; at the same time, the part of the heat exchanger that contacts the electronic components is a conformal structure that can fit the electronic components, so that the heat exchanger can fit the electronic components with irregular shapes, thereby improving the heat dissipation effect of the electronic components with irregular shapes, and further improving the heat dissipation performance of the electrical box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0031] Figure 1 It is a structural schematic diagram of an electrical appliance box assembly of the utility model.

[0032] Figure 2 yes Figure 1 Magnified view of area A.

[0033] Figure 3 yes Figure 1 Magnified view of area B.

[0034] Figure 4 This is a schematic diagram of the first connection structure of the circuit board, the heat exchanger and the electronic components of the utility model.

[0035] Figure 5 This is a schematic diagram of a second connection structure of a circuit board, a heat exchanger and electronic components of the utility model.

[0036] List of reference numerals:

[0037] 1-Electrical box housing;

[0038] 21-first circuit board; 211-first electronic component;

[0039] 22-second circuit board; 221-second electronic component;

[0040] 3-Heat exchange parts;

[0041] 4-Thermal conductive layer. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0043] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0044] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] like Figure 1 As shown, an embodiment of the utility model provides an electrical box assembly for an air conditioner, comprising an electrical box housing 1 , at least one circuit board and at least one heat exchange component 3 .

[0046] like Figure 1 As shown, the interior of the electrical box housing 1 has a space that can accommodate a circuit board. The electrical box housing 1 is a metal housing, which can be an aluminum shell, a copper shell, a stainless steel shell, etc. The electrical box housing 1 is constructed with a matching through hole (not marked) for the heat exchange component 3 to pass through. The size of the matching through hole corresponds to the size of the object passing through, and will not affect the internal closure of the electrical box housing 1.

[0047] like Figure 1 As shown, the circuit board is a PCB circuit board, which is located inside the electrical box housing 1. At least one electronic component is arranged on the circuit board. The electronic component can be a high-heat or high-power component, or a component with an irregular structure or a special-shaped component that is difficult to be attached to a flat mounting surface, such as a capacitor, a relay, a transformer, a reactor or an inductor, etc. The electronic component can be connected to the heat exchanger 3, so that its own heat can be dissipated by the heat exchanger 3.

[0048] In some specific embodiments, the electronic components are capacitors, and / or relays, and / or transformers, and / or reactors, and / or inductors, according to actual layout requirements, such as Figure 1 As shown, multiple electronic components can be distributed on at least two circuit boards, and multiple electronic components can also be distributed on the same circuit board.

[0049] like Figure 1As shown, the heat exchanger 3 is a component with heat conduction capability. The heat exchanger 3 is connected to at least a portion of the surface of the electronic component and performs heat exchange, thereby conducting the heat of the electronic component to the relevant heat sink for heat dissipation. The portion of the heat exchanger 3 that contacts the electronic component is configured as a conformal structure that can fit the electronic component. The conformal structure of the heat exchanger 3 is constructed according to the portion that contacts the electronic component. For example, if the electronic component is a capacitor element, Figure 2 As shown, the capacitor element is cylindrical or approximately cylindrical in shape, and the conformal structure of the heat exchanger 3 can be constructed as an arc shape that can fit the side of the capacitor element. Specifically, the heat exchanger 3 can be contacted and connected with the side of the capacitor element; if the electronic component is a relay, such as Figure 3 As shown, the shape of the relay is a rectangular parallelepiped or approximately a rectangular parallelepiped, and the conformal structure of the heat exchanger 3 can be constructed as a straight surface that can fit the side surface or top surface of the relay that is not in contact with the circuit board. Specifically, the heat exchanger 3 can be contacted and connected with the side surface of the relay.

[0050] Specifically, Figure 1 As shown, the heat exchanger 3 can be a component with a refrigerant flowing through its internal flow channel. The internal flow channel of the heat exchanger 3 is connected to the refrigerant circulation loop of the air conditioner, so that the refrigerant inside it can absorb the heat emitted by the electronic components, thereby cooling the electronic components and improving the heat dissipation performance of the electrical box without destroying the closed structure of the electrical box; the heat exchanger 3 can also be a microchannel, heat pipe, gravity heat pipe, loop heat pipe or temperature equalizing plate and other structures that conduct the heat emitted by the electronic components through liquid flow or material phase change heat transfer.

[0051] In some specific embodiments, Figure 2 and Figure 3 As shown, a heat-conducting layer 4 is provided between the heat exchanger 3 and the electronic components, and the heat-conducting layer 4 can fill the gap between the heat exchanger 3 and the electronic components, reduce the resistance and loss during the heat transfer process, and improve the heat conduction efficiency. The material of the heat-conducting layer 4 can be a heat-conducting interface material such as heat-conducting silicone grease (heat dissipation paste), heat-conducting silicone sheet (heat-conducting gasket), heat-conducting gel, heat-conducting phase change material or potting glue (such as heat-conducting curing glue, AB glue, heat-conducting glue), etc.

[0052] Specifically, Figure 2 As shown, the heat conducting layer 4 can be disposed between the heat exchanger 3 and the plurality of electronic components in a continuous manner, or the heat conducting layer 4 can be disposed between the heat exchanger 3 and the electronic components in an at least partially discontinuous manner. The specific arrangement can be selected according to actual conditions.

[0053] There are various arrangements between the circuit board, the heat exchanger 3 and the electronic components of the utility model:

[0054] In some specific embodiments, Figure 2As shown, a plurality of electronic components are arranged in at least two rows, and the heat exchanger 3 is arranged between two adjacent rows of electronic components. Through the above arrangement, a heat exchanger 3 can be connected to two adjacent rows of electronic components on the circuit board. Compared with other arrangement structures, the total length of the heat exchanger 3 in this embodiment is shorter, which can reduce the material cost of the heat exchanger 3.

[0055] In some specific embodiments, Figures 3 to 5 As shown, multiple electronic components are arranged at intervals on the circuit board, and the heat exchanger 3 is arranged to continuously pass through the gap between two adjacent electronic components in the same row in a serpentine extension manner, and is respectively connected to the electronic components on both sides of the gap. Through the above arrangement, a heat exchanger 3 can be continuously connected to the adjacent electronic components in the same row. Compared with other arrangement structures, the total length of the heat exchanger 3 in this embodiment is longer, but the contact area between the heat exchanger 3 and each electronic component is larger, which can improve the heat absorption effect of the heat exchanger 3, thereby improving the heat dissipation performance of the electrical box.

[0056] In some specific embodiments, Figure 5 As shown, the number of heat exchangers 3 is equal to the number of circuit boards, and each circuit board is equipped with a heat exchanger 3. Since the number and type of electronic components on different circuit boards are different, the heat generation of different circuit boards is different. Through the above arrangement, each heat exchanger 3 is arranged in a one-to-one correspondence with each circuit board, that is, each heat exchanger 3 is independently connected to multiple electronic components on a corresponding circuit board. Compared with other arrangement structures, this embodiment can independently control the heat dissipation state on each circuit board.

[0057] In some specific embodiments, the heat exchanger 3 can be connected to the refrigerant circulation circuit of the air conditioner. The heat exchanger 3 includes a plurality of refrigerant sub-pipes connected to the refrigerant circulation circuit of the air conditioner. Each circuit board is equipped with a refrigerant sub-pipe, and the refrigerant sub-pipe is a component with refrigerant flowing through the internal flow channel. Since the number and type of electronic components on different circuit boards are different, the heating values ​​of different circuit boards are different. Through the above arrangement, each refrigerant sub-pipe is arranged in a one-to-one correspondence with each circuit board, that is, each refrigerant sub-pipe is independently connected to a plurality of electronic components on a corresponding circuit board. Compared with other arrangement structures, each refrigerant sub-pipe can be independently connected to the refrigerant circulation circuit of the air conditioner, and this embodiment can independently control the heat dissipation state on each circuit board.

[0058] The utility model can adjust the number of circuit boards and the types and numbers of electronic components arranged on the circuit boards according to actual needs, thereby adjusting the structure of the electrical box assembly:

[0059] In some specific embodiments, Figures 1 to 3As shown, the circuit board includes two first circuit boards 21 and two second circuit boards 22, the first circuit board 21 is provided with a first electronic component 211, and a plurality of first electronic components 211 are arranged in two rows, the second circuit board 22 is provided with a second electronic component 221, and a plurality of second electronic components 221 are arranged at intervals on the second circuit board 22, and a partial structure of a heat exchanger 3 is arranged between two adjacent rows of first electronic components 211, and at the same time, a partial structure of the same heat exchanger 3 is arranged to continuously pass through the gap between two adjacent second electronic components 221 in the same row in a serpentine extension manner, and is respectively connected to the second electronic components 221 on both sides of the gap; that is, a heat exchanger 3 is connected to all the first electronic components 211 on the two first circuit boards 21 and all the second electronic components 221 on the two second circuit boards 22 to exchange heat.

[0060] In some specific embodiments, Figure 4 As shown, the circuit board includes two first circuit boards 21, a plurality of first electronic components 211 are arranged in two rows on the first circuit boards 21, and the first electronic components 211 in the same row are arranged at intervals on the first circuit board 21, and a heat exchanger 3 is arranged to continuously pass through the gap between two adjacent first electronic components 211 in the same row in a serpentine manner, and is respectively connected to the first electronic components 211 on both sides of the gap; that is, a heat exchanger 3 is connected to all the first electronic components 211 on the two first circuit boards 21 and performs heat exchange.

[0061] In some specific embodiments, Figure 5 As shown, the circuit board includes two first circuit boards 21, and a plurality of first electronic components 211 are arranged in two rows on the first circuit boards 21. The number of heat exchangers 3 is equal to the number of circuit boards. Each first circuit board 21 is adapted with a heat exchanger 3. At the same time, the heat exchanger 3 is arranged to continuously pass through the gap between two adjacent first electronic components 211 located in the same row in a serpentine extension manner, and is respectively connected to the first electronic components 211 on both sides of the gap; that is, the two heat exchangers 3 are respectively connected to all the first electronic components 211 on the two first circuit boards 21 and perform heat exchange.

[0062] The utility model also provides an air conditioner, which includes a refrigerant circulation loop and the electrical box assembly in the above embodiment. The refrigerant circulation loop is connected to the internal flow channel of the heat exchange component 3, and the refrigerant circulation loop can transport the refrigerant to the internal flow channel of the heat exchange component 3.

[0063] It is understandable that, since the air conditioner is equipped with the above-mentioned electrical box assembly, it has all the technical effects of the above-mentioned electrical box assembly, which will not be repeated here.

[0064] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An electrical box assembly for an air conditioner, characterized in that: The electrical box assembly comprises: Electrical box housing; At least one circuit board, which is located inside the housing of the electrical box, and at least one electronic component is arranged on the circuit board; at least one heat exchange element connected to at least a portion of the surface of the electronic component to exchange heat, Wherein, the portion of the heat exchanger that contacts the electronic component is configured as a conformal structure that can fit the electronic component.

2. The electrical box assembly for an air conditioner according to claim 1, characterized in that: The heat exchanger is a component having a refrigerant flowing through its internal flow channel, and the internal flow channel of the heat exchanger is connected to a refrigerant circulation circuit of the air conditioner; or The heat exchange element is a microchannel; or The heat exchange element is a heat pipe.

3. The electrical box assembly for an air conditioner according to claim 1 or 2, characterized in that: A heat conducting layer is arranged between the heat exchange element and the electronic components.

4. The electrical box assembly for an air conditioner according to claim 3, characterized in that: The heat-conducting layer is disposed between the heat exchange element and the electronic component in a continuous or at least partially discontinuous manner.

5. The electrical box assembly for an air conditioner according to claim 4, characterized in that: The plurality of electronic components are arranged in at least two rows, and the heat exchange element is disposed between two adjacent rows of electronic components.

6. The electrical box assembly for an air conditioner according to claim 4, characterized in that: A plurality of electronic components are arranged at intervals on the circuit board, and the heat exchanger is configured to continuously pass through the gap between two adjacent electronic components in the same row in a serpentine manner and is respectively connected to the electronic components on both sides of the gap.

7. The electrical box assembly for an air conditioner according to claim 2, characterized in that: The number of the heat exchange components is equal to the number of the circuit boards, and each circuit board is equipped with one heat exchange component.

8. The electrical box assembly for an air conditioner according to claim 2, characterized in that: The heat exchange component includes a plurality of refrigerant sub-pipes connected to the refrigerant circulation circuit of the air conditioner, and each circuit board is equipped with one refrigerant sub-pipe.

9. The electrical box assembly for an air conditioner according to claim 1, characterized in that: The electronic components are capacitors, and / or relays, and / or transformers, and / or reactors, and / or inductors.

10. The electrical box assembly for an air conditioner according to claim 9, characterized in that: The plurality of electronic components are distributed on at least two of the circuit boards.

11. An air conditioner, characterized in that: The air conditioner comprises the electrical appliance box assembly for the air conditioner according to any one of claims 1 to 10.

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