Heat dissipation assembly, electric appliance box and air conditioner

Abstract

The utility model provides a heat dissipation assembly, an electric appliance box and an air conditioner, the heat dissipation assembly is applied in a shell, a first heating assembly and a second heating assembly are arranged in the shell, the heating rate of the second heating assembly is lower than that of the first heating assembly, and a first heat dissipation device and a second heat dissipation device are arranged between the first heat dissipation device and the second heat dissipation device. The first radiator is in contact with the first heating assembly, and the second radiator is in contact with the second heating assembly; and the first radiator and the second radiator are both provided with refrigerant flow paths, so that the technical problems of low cooling efficiency and large temperature difference in the electric appliance box in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioners, and in particular relates to a heat dissipation component, an electrical appliance box and an air conditioner. Background Art

[0002] The existing open electrical box of the air conditioner outdoor unit relies on the air duct between each partition and the box body to assist in heat dissipation. The airflow generated by the rotation of the fan blades takes away the heat accumulated in the box. However, non-sealed electrical boxes will bring about dustproof and waterproof requirements. For non-sealed electrical boxes, when the ambient temperature is too high, the temperature of the air that dissipates the heat of the electrical box is relatively high. When the high-temperature air flows through the electrical box, it cannot effectively reduce the temperature inside the electrical box, resulting in an increase in the temperature rise of the electrical box, affecting the reliability of the unit.

[0003] To solve this problem, the prior art (CN110645640A) allows a low-temperature refrigerant to flow through a heat sink in the electrical box to dissipate heat from the electrical box through the refrigerant; however, in this solution, since the temperature of the refrigerant is relatively low and the thermal conductivity of a single heat sink is constant, this results in large temperature differences in different areas of the electrical box. The large temperature difference in the electrical box is not conducive to the stable operation of the electrical box.

[0004] How to evenly cool down the electrical box is a technical problem that urgently needs to be solved. Utility Model Content

[0005] Therefore, the utility model provides a heat dissipation component, an electrical appliance box and an air conditioner, which can solve the technical problems of low cooling efficiency and large temperature difference in the electrical appliance box in the prior art.

[0006] The utility model provides a heat dissipation component, which is applied in a housing, wherein a first heat-generating component and a second heat-generating component are arranged in the housing, wherein the heat generation rate of the second heat-generating component is lower than the heat generation rate of the first heat-generating component, and comprises:

[0007] A first heat sink and a second heat sink, wherein the first heat sink contacts the first heat generating component, and the second heat sink contacts the second heat generating component;

[0008] The first radiator and the second radiator are both provided with a refrigerant flow path.

[0009] In some embodiments, the first radiator includes a first heat exchange plate, and a first refrigerant flow pipe is arranged in the first heat exchange plate along the extension direction of the plate surface;

[0010] The second radiator includes a second heat exchange plate, and a second refrigerant flow pipe is arranged in the second heat exchange plate.

[0011] In some embodiments, the first heat exchange plate is provided with a first through hole extending along the plate surface and penetrating the first heat exchange plate, and the first refrigerant flow pipe is provided in the first through hole;

[0012] The second heat exchange plate is provided with a second through hole extending along the plate surface and penetrating the second heat exchange plate, and the second refrigerant flow pipe is provided in the second through hole.

[0013] In some embodiments, the plate surfaces of the first heat exchange plate and the second heat exchange plate are opposite to each other, and the first heat exchange plate and the second heat exchange plate are connected together.

[0014] In some embodiments, the first heat exchange plate and the second heat exchange plate are connected together via ribs, and the thermal conductivity of the ribs is smaller than the thermal conductivity of the first heat exchange plate and the second heat exchange plate.

[0015] In some embodiments, a plurality of fins are disposed on the second heat exchange plate, and some of the fins are in contact with the second heat-generating component.

[0016] In some embodiments, the second heat sink includes a clamping member, a plurality of the fins are disposed on the clamping member, and the clamping member is clamped on the second heat exchange plate.

[0017] The utility model also provides an electrical appliance box, comprising a shell and the heat dissipation component, wherein the heat dissipation component is arranged in the shell, and the shell is a sealing structure.

[0018] In some embodiments, a circuit board is disposed in the housing, the first heat generating component is disposed on the circuit board, and the first heat sink is fixed on the circuit board and abuts against the first heat generating component.

[0019] The utility model also provides an air conditioner, comprising the electrical appliance box.

[0020] The utility model is provided with a first radiator and a second radiator. The first radiator is in contact with the first heating component, and the second radiator is in contact with the second heating component. Low-temperature refrigerant can be introduced into both radiators, so that the first radiator can cool the heating component as quickly as possible through the low-temperature refrigerant to avoid the heating component from being overheated. The second radiator can also dissipate heat from the second heating component through the low-temperature refrigerant, and the second radiator can also dissipate heat from the air in the shell to reduce the air temperature in the shell. Since the heat generation of the first heating component and the second heating component is different, the two radiators can differentially cool the parts with different temperatures, thereby making the overall cooling of the shell more uniform, avoiding a large temperature difference in the shell, which is not conducive to the stable operation of the electrical box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 It is a schematic diagram of a heat dissipation component of an embodiment of the utility model when it is arranged in an electrical appliance box;

[0023] Figure 2 It is a schematic diagram of a perspective along the extending direction of the first through hole when the heat dissipation assembly of the embodiment of the utility model is arranged in the electrical appliance box;

[0024] Figure 3 It is an embodiment of the utility model Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 It is a schematic diagram of a heat dissipation component of an embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of a rib of an embodiment of the utility model provided with a clamping member;

[0027] Figure 6 It is a schematic diagram of the fins of the embodiment of the utility model when they are divergent in the electrical box;

[0028] The accompanying drawings are marked as follows:

[0029] 1. First radiator; 101. First heat exchange plate; 1011. First through hole; 2. Second radiator; 201. Second heat exchange plate; 2011. Second through hole; 3. Ribs; 401. First refrigerant flow pipe; 402. Second refrigerant flow pipe; 501. Connector; 502. Ribs; 6. Circuit board; 701. First heating component; 702. Second heating component. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0034] See also Figure 1-6 As shown, the utility model provides a heat dissipation component, which is applied in a housing, wherein a first heat-generating component 701 and a second heat-generating component 702 are arranged in the housing, wherein the heat generation rate of the second heat-generating component 702 is lower than the heat generation rate of the first heat-generating component 701, including:

[0035] A first heat sink 1 and a second heat sink 2, wherein the first heat sink 1 contacts the first heating component 701, and the second heat sink 2 contacts the second heating component 702;

[0036] The first radiator 1 and the second radiator 2 are both provided with a refrigerant flow path.

[0037] The present application sets a first radiator 1 and a second radiator 2. The first radiator 1 contacts the first heating component 701, and the second radiator contacts the second heating component 702. Low-temperature refrigerant can be introduced into both radiators, so that the first radiator 1 can cool down the heating component as quickly as possible through the low-temperature refrigerant to avoid the heating component from being too hot. The second radiator 2 can also dissipate heat from the second heating component through the low-temperature refrigerant, and the second radiator 2 can also dissipate heat from the air in the shell to reduce the air temperature in the shell. Since the heat generation of the first heating component 701 and the second heating component 702 is different, the two radiators can differentially cool down the parts with different temperatures, thereby making the overall cooling of the shell more uniform, avoiding a large temperature difference in the shell, which is not conducive to the stable operation of the electrical box.

[0038] like Figure 4 As shown, the refrigerant is divided into two paths by the diverter and flows into the first radiator 1 and the second radiator 2 respectively. The temperature of the two refrigerants is the same. When the two radiators have different structures and different contact areas with the outside, the heat dissipation efficiency of the two radiators is different. After the refrigerant absorbs heat through the two radiators, it flows out from the first radiator 1 and the second radiator 2 and is combined into one path through the diverter.

[0039] Preferably, Figure 2-3 As shown, the first radiator 1 comprises a first heat exchange plate 101, and a first refrigerant flow pipe 401 is arranged inside the first heat exchange plate 101 along the extension direction of the plate surface;

[0040] The second radiator 2 includes a second heat exchange plate 201 , and a second refrigerant flow pipe 402 is disposed in the second heat exchange plate 201 .

[0041] The first radiator 1 includes a first heat exchange plate 101, and a first refrigerant circulation pipe 401 is arranged inside the first heat exchange plate 101 along the extension direction of the plate surface; the first radiator 1 can be cooled by only requiring the low-temperature refrigerant of the air-conditioning system to enter the first refrigerant circulation pipe 401, thereby improving the convenience of setting up the heat dissipation component.

[0042] Similarly, the second radiator 2 includes a second heat exchange plate 201, which is connected to the first heat exchange plate 101. A second refrigerant flow pipe 402 is provided in the second heat exchange plate 201. The second radiator 2 can be cooled by only drawing out the low-temperature refrigerant of the air-conditioning system into the second refrigerant flow pipe 402, thereby improving the convenience of setting the heat dissipation component. The refrigerant in a single tube can be divided into two by a flow divider to enter the first refrigerant flow pipe 401 and the second refrigerant flow pipe 402, and the refrigerant flowing out of the two refrigerant flow pipes can be collected into a single refrigerant flow pipe by a flow collector.

[0043] Preferably, Figure 3As shown, the first heat exchange plate 101 is provided with a first through hole 1011 extending along the plate surface and penetrating the first heat exchange plate 101, and the first refrigerant flow pipe 401 is disposed in the first through hole 1011;

[0044] The second heat exchange plate 201 is provided with a second through hole 2011 extending along the plate surface and penetrating the second heat exchange plate 201 , and the second refrigerant flow pipe 402 is disposed in the second through hole 2011 .

[0045] The first heat exchange plate 101 is provided with a first through hole 1011 extending along its plate surface and penetrating the first heat exchange plate 101, and the first refrigerant circulation tube 401 is arranged in the first through hole 1011; further, the first refrigerant circulation tube 401 can be fixed in the first through hole 1011 by a tube expansion process, thereby improving the processing efficiency of the first radiator 1.

[0046] The second heat exchange plate 201 is provided with a second through hole 2011 extending along its plate surface and penetrating the second heat exchange plate 201, and the second refrigerant circulation tube 402 is arranged in the second through hole 2011; further, the second refrigerant circulation tube 402 can be fixed in the second through hole 2011 by a tube expansion process, thereby improving the processing efficiency of the second radiator 2.

[0047] Preferably, Figure 4 As shown, the plate surfaces of the first heat exchange plate 101 and the second heat exchange plate 201 are opposite to each other, and the first heat exchange plate 101 and the second heat exchange plate 201 are connected together.

[0048] The two heat exchange plates are connected together so that the heat dissipation component is a whole, thereby improving the convenience of installing the heat dissipation component.

[0049] Preferably, Figure 3 , 4 As shown in FIG. 6 , the first heat exchange plate 101 and the second heat exchange plate 201 are connected together via ribs 3 , and the thermal conductivity of the ribs 3 is smaller than the thermal conductivity of the first heat exchange plate 101 and the second heat exchange plate 201 .

[0050] The first radiator 1 and the second radiator 2 are connected together via the ribs 3, so that the two radiators form a whole, which is convenient for installing the heat dissipation component in the housing. The heat dissipation component is a double-layer structure, which is convenient for reducing space occupation.

[0051] Preferably, the first heat sink 1 and the second heat sink 2 are both made of aluminum, which has good thermal conductivity, low cost, low rigidity, and can be made into various shapes; using aluminum to make the first heat sink 1 and the second heat sink 2 improves thermal conductivity while reducing costs. The thermal conductivity of the rib 3 is lower than that of aluminum. Since the rigidity of aluminum is lower (compared with iron), when the fins 502 are provided, the shape of the fins 502 can be various shapes, so that the multiple fins 502 are spaced and relatively evenly distributed in the shell, so that the temperature in the shell is more uniform.

[0052] Preferably, Figure 5-6 As shown, a plurality of fins 502 are disposed on the second heat exchange plate 201 , and some of the fins 502 are in contact with the second heat generating component 702 .

[0053] By providing the fins 502, the heat exchange efficiency between the second radiator 2 and the air in the shell and the second heating component 702 is accelerated, which is conducive to keeping the temperature of the shell within a reasonable range.

[0054] Since heat-generating components with different heat generation rates are in contact with different radiators, the different heat-generating components can be cooled to the same temperature range, thus avoiding excessive temperature differences between different heat-generating components in the shell; and the temperature of the lower-temperature components will not be lowered too much in order to cool down the higher-temperature components, which not only ensures the temperature operation of the electrical components in the shell, but also reduces the consumption of cooling capacity.

[0055] Preferably, Figure 5 As shown, the second radiator 2 includes a clamping member 501 , a plurality of fins 502 are arranged on the clamping member 501 , and the clamping member 501 is clamped on the second heat exchange plate 201 .

[0056] Furthermore, the second heat exchange plate 201 is a rectangular parallelepiped structure, the clamping member 501 is concave, a plurality of ribs 502 are arranged on the outer wall surface of the clamping member 501 , and the clamping member 501 is covered on the second heat exchange plate 201 .

[0057] By setting the fin 502 on the clamp 501, and then covering the second heat exchange plate 201 with the clamp 501, the fin 502 and the second heat exchange plate 201 are fixed, and the installation of the fin 502 is simpler and faster, which is conducive to reducing costs. A single fin 502 is a rectangular thin sheet, and the distance between each fin 502 and the inner wall surface of the shell is between 5mm and 10mm, so as to avoid the external temperature of the shell from affecting the fin 502 (reducing the heat exchange between the fin 502 and the outside of the shell).

[0058] The ribs 502 and the clamping member 501 are integrally formed, and the plurality of ribs 502 are regularly distributed, such as Figure 5As shown, the ribs 502 can be arranged in parallel or in a divergent manner. To improve the heat dissipation effect, the ribs 502 can be arranged relatively densely. When a capacitor element or an inductor element is arranged in the housing, the ribs 502 should be arranged away from the capacitor element or the inductor element. The ribs 502 can be bent to fit and wrap around the inductor element or the capacitor element to improve the heat dissipation efficiency of the inductor element or the capacitor element.

[0059] The utility model provides an electrical appliance box, comprising a heat dissipation component described in a shell, wherein the heat dissipation component is arranged in the shell, and the shell is a sealing structure.

[0060] The electrical box is set as a sealed structure, which can reduce the adverse effects of external rain, dust and insects on the electrical box.

[0061] Preferably, Figure 3-4 As shown, a circuit board 6 is disposed in the housing, the first heating component 701 is disposed on the circuit board 6 , and the first heat sink 1 is fixed on the circuit board 6 and abuts against the first heating component 701 .

[0062] The first radiator 1 is fixed to the circuit board 6 (PCB) by screws, which is convenient for fixing the first radiator 1 and can also dissipate heat to the circuit board 6 to a certain extent; and because the first radiator 1 is in close contact with the first heating component 701, the first heating component 701 can be cooled faster, thus avoiding the first heating component 701 from overheating.

[0063] The utility model provides an air conditioner, comprising the electrical appliance box.

[0064] The electrical box is set as a sealed structure, which can reduce the adverse effects of external rain, dust and insects on the electrical box, and reduce the failure rate of the air conditioner.

[0065] The electrical box is arranged in the outer unit of the air conditioner, which reduces the space occupied by the inner unit. Specifically, the electrical box is arranged in a corner of the upper part of the outer unit.

[0066] In the existing layout of the air conditioner outdoor unit, the electrical box is located in a corner of the upper part of the whole unit, the middle partition separates the fan blades from the electrical box, and the air duct is set between the middle partition and the electrical box body. The airflow generated by the rotation of the fan blades enters through the air duct and takes away the heat accumulated in the electrical box. However, when the ambient temperature is too high, the temperature of the airflow entering the electrical box is too high, the diversion and heat dissipation effect is weakened, and the large amount of heat accumulated in the electrical box cannot be effectively taken away.

[0067] The present application cools down the two radiators by setting a refrigerant flow path in both radiators, and the low-temperature refrigerant exchanges heat with the radiators through the refrigerant flow path to cool down the two radiators, and the cooled radiators cool down the first heating component 701 in the electrical box and the air in the electrical box. In this way, when the ambient temperature of the electrical box is high, the temperature in the electrical box is too high, which causes the electrical box to fail to work normally. Since the electrical box is cooled by low-temperature refrigerant instead of air flow, there is no need to set up a special air duct in the electrical box; further, since there is no need for external air to enter the electrical box for cooling, the electrical box can be set as a sealed structure, so that the sealed electrical box has dustproof, waterproof, insect-proof and other functions.

[0068] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0069] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. A heat dissipation component, applied in a housing, wherein a first heat-generating component (701) and a second heat-generating component (702) are arranged in the housing, wherein the heat generation rate of the second heat-generating component (702) is lower than the heat generation rate of the first heat-generating component (701), and wherein: include: A first heat sink (1) and a second heat sink (2), wherein the first heat sink (1) contacts the first heat generating component (701), and the second heat sink (2) contacts the second heat generating component (702); The first radiator (1) and the second radiator (2) are both provided with a refrigerant flow path.

2. The heat dissipation assembly according to claim 1, characterized in that: The first radiator (1) comprises a first heat exchange plate (101), wherein a first refrigerant flow pipe (401) is arranged inside the first heat exchange plate (101) along the extension direction of the plate surface; The second radiator (2) comprises a second heat exchange plate (201), and a second refrigerant flow pipe (402) is arranged inside the second heat exchange plate (201).

3. The heat dissipation assembly according to claim 2, characterized in that: The first heat exchange plate (101) is provided with a first through hole (1011) extending along the plate surface and penetrating the first heat exchange plate (101), and the first refrigerant flow pipe (401) is arranged in the first through hole (1011); The second heat exchange plate (201) is provided with a second through hole (2011) extending along its plate surface and penetrating the second heat exchange plate (201), and the second refrigerant flow pipe (402) is arranged in the second through hole (2011).

4. The heat dissipation assembly according to claim 3, characterized in that: The plate surfaces of the first heat exchange plate (101) and the second heat exchange plate (201) are opposite to each other, and the first heat exchange plate (101) and the second heat exchange plate (201) are connected together.

5. The heat dissipation assembly according to claim 4, characterized in that: The first heat exchange plate (101) and the second heat exchange plate (201) are connected together via ribs (3), and the thermal conductivity of the ribs (3) is smaller than the thermal conductivity of the first heat exchange plate (101) and the second heat exchange plate (201).

6. The heat dissipation assembly according to claim 2, characterized in that: A plurality of fins (502) are provided on the second heat exchange plate (201), and some of the fins (502) are in contact with the second heat generating component (702).

7. The heat dissipation assembly according to claim 6, characterized in that: The second radiator (2) comprises a clamping member (501), a plurality of fins (502) are arranged on the clamping member (501), and the clamping member (501) is clamped on the second heat exchange plate (201).

8. An electrical box, characterized in that: It comprises a shell and the heat dissipation assembly according to any one of claims 1 to 7, wherein the heat dissipation assembly is arranged in the shell, and the shell is a sealed structure.

9. The electrical box according to claim 8, characterized in that: A circuit board (6) is arranged in the housing, the first heating component (701) is arranged on the circuit board (6), and the first heat sink (1) is fixed on the circuit board (6) and abuts against the first heating component (701).

10. An air conditioner, characterized in that: The invention comprises the electrical box as described in any one of claims 8 to 9.

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