Electrical boxes and air conditioners with high heat dissipation efficiency

Abstract

The present invention provides an electrical box and air conditioner with high heat dissipation efficiency. The electrical box includes a shell, heat-generating components and a heat dissipation mechanism, which are arranged in the shell, and includes a plate body and a cooling channel. The regular components are arranged on the plate body, and the special-shaped components are embedded in the cooling channel or are connected to the cooling channel through a heat transfer mechanism. The electrical box and air conditioner with high heat dissipation efficiency provided by the present invention enable the special-shaped components to directly exchange heat with the cooling channel, especially the cooling channel is extended into the through hole of the inductor, thereby reducing the thermal resistance between the special-shaped components and the cooling channel, and adopts an embedding method to form solid heat transfer between the special-shaped components and the cooling channel, greatly improving the heat dissipation efficiency. The plate body can increase the heat exchange efficiency of the refrigerant in the cooling channel, thereby increasing the heat dissipation efficiency of the electrical box, and comprehensively ensuring that each electronic component works within a suitable working temperature, thereby enabling the reliable operation of the electronic equipment.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation of electronic components, in particular to an electrical box and an air conditioner with high heat dissipation efficiency. Background Art

[0002] With the rapid development of power electronics technology, the heat flux density of electronic components is getting higher and higher, and the heat generated by electronic equipment is also getting larger and larger. The traditional air-cooling heat dissipation method can no longer meet the heat dissipation needs of electronic equipment. Many electronic equipment have strict requirements on the protection level, and must adopt a fully enclosed shell design to ensure the "four protections (insect-proof, waterproof, dust-proof, and anti-corrosion)" requirements, which undoubtedly further increases the difficulty of heat dissipation. In response to the above problems, the existing technology is to attach a refrigerant radiator to the outer shell of the electrical box, and take away the heat of the components in the electrical box through the refrigerant radiator, greatly reducing the temperature of the components attached to the outer shell of the electrical box. However, the above scheme can only ensure the heat dissipation effect of components with a flat appearance and attached to the outer shell of the electrical box. The shape of the inductor is irregular, and the heat generated is large. It cannot directly contact the outer shell of the electrical box, resulting in the inability to guarantee heat dissipation, which will also cause overheating failure of the equipment. Summary of the invention

[0003] In order to solve the technical problem of poor heat dissipation effect of the electrical box in the prior art, an electrical box and an air conditioner are provided in which a cooling channel is inserted into the interior of the inductor and potted and solidified to ensure heat dissipation with high heat dissipation efficiency.

[0004] An electrical box, comprising:

[0005] case;

[0006] Heat generating components are arranged in the housing and are divided into regular components and special-shaped components according to their shapes;

[0007] The heat dissipation mechanism is arranged in the shell and includes a plate body and a cooling channel. The regular components are arranged on the plate body, and the special-shaped components are embedded in the cooling channel or are in contact with the cooling channel through a heat transfer mechanism.

[0008] The cooling channel comprises a mounting section and a heat exchange section which are connected in sequence, the mounting section is located in the plate body, and the heat exchange section directly or indirectly exchanges heat with the special-shaped components.

[0009] The heat-generating component comprises an inductor, a through hole is formed in the middle of the inductor, and the heat exchange section is arranged in the through hole.

[0010] The heat exchange section is potted in the through hole by potting glue.

[0011] There are multiple inductors, and the heat exchange section passes through the through holes of all the inductors in sequence.

[0012] Refrigerant flows in the cooling channel, and the flow direction of the refrigerant is from the installation section to the heat exchange section.

[0013] The electrical box further comprises a shielding plate, which is arranged in the shell and divides the shell into two accommodating chambers, the plate body is in one of the accommodating chambers, and the heat exchange section is in the other accommodating chamber.

[0014] The electrical box further comprises a main board and a filter board, wherein the main board and the filter board are both fixedly arranged on the shielding plate, the regular components are arranged on the main board, and the inductor is arranged on the filter board.

[0015] The main board is arranged in one of the accommodating cavities, and the filter board is arranged in the other accommodating cavity.

[0016] The plate body has a first mounting surface and a second mounting surface adjacent to each other, the regular components are arranged on the first mounting surface, and the special-shaped components are connected to the second mounting surface through the heat transfer mechanism.

[0017] The plate body is a rectangular parallelepiped structure, the top surface of the rectangular parallelepiped structure constitutes the first mounting surface, and the side surface of the rectangular parallelepiped structure constitutes the second mounting surface.

[0018] The refrigerant flowing in the cooling channel includes water or a refrigerant.

[0019] The heat transfer mechanism includes heat-conducting glue.

[0020] An electrical box, comprising:

[0021] case;

[0022] An inductor is disposed in the housing, and a through hole is formed on the inductor;

[0023] A cooling channel is arranged in the through hole, and two ends of the cooling channel penetrate the shell and communicate with the outside of the electrical box.

[0024] An air conditioner comprises the above-mentioned electrical appliance box.

[0025] The electrical box and air conditioner with high heat dissipation efficiency provided by the present invention enable special-shaped components to directly exchange heat with the cooling channel, especially enable the cooling channel to extend into the through hole of the inductor, thereby reducing the thermal resistance of thermal conductivity between the special-shaped components and the cooling channel, and adopt an encapsulation method to form solid heat transfer between the special-shaped components and the cooling channel, thereby greatly improving the heat dissipation efficiency. The plate body can increase the heat exchange efficiency of the refrigerant in the cooling channel, thereby increasing the heat dissipation efficiency of the electrical box. The shielding plate separates the interior of the electrical box, so that the heat of the two parts is dissipated according to the different positions of the heat dissipation mechanism, thereby avoiding heat transfer between the heat-generating components, increasing the heat dissipation efficiency, and fully ensuring that each electronic component works within a suitable working temperature, thereby ensuring the reliable operation of the electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An exploded view of an electrical box of an embodiment of an electrical box and an air conditioner with high heat dissipation efficiency provided by the present invention;

[0027] Figure 2 A schematic diagram of the internal structure of an electrical box of an embodiment of an electrical box and an air conditioner with high heat dissipation efficiency provided by the present invention;

[0028] Figure 3 A schematic diagram of the structure of the heat dissipation mechanism of an electrical box and an air conditioner with high heat dissipation efficiency provided by the present invention;

[0029] Figure 4 Another structural schematic diagram of the heat dissipation mechanism of the embodiment of the electrical box and air conditioner with high heat dissipation efficiency provided by the present invention;

[0030] In the figure:

[0031] 1. Shell; 2. Regular components; 3. Special-shaped components; 4. Heat dissipation mechanism; 41. Plate body; 42. Cooling channel; 43. Heat exchange section; 5. Inductor; 6. Shielding plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] like Figures 1 to 3The electrical box shown includes a housing 1; a heat generating component is arranged in the housing 1 and is divided into a regular component 2 and a special-shaped component 3 according to the shape; a heat dissipation mechanism 4 is arranged in the housing 1 and includes a plate 41 and a cooling channel 42, the regular component 2 is arranged on the plate 41, and the special-shaped component 3 is potted on the cooling channel 42 or is in contact with the cooling channel 42 through a heat transfer mechanism. Potting is to mechanically or manually pour a liquid compound into a device equipped with electronic components and circuits, and solidify it at room temperature or under heating conditions to become a thermosetting polymer insulating material with excellent performance. The potted structure is a solid structure. Heat conduction is solid heat conduction, and the heat exchange efficiency is improved. According to whether the shape of the heating component is regular, such as whether it has a plane, the proportion of the plane area to the outer surface area of ​​the entire heating component, etc., it is judged that the contact between the heating component and the heat dissipation mechanism 4 can meet the heat dissipation requirements of the heating component. When the heat dissipation requirements are met, it is divided into 2 groups of regular components. When the heat dissipation requirements are not met, it is divided into 3 groups of special-shaped components, and they are encapsulated in the cooling channel 42 so that they are solidified into a whole with the cooling channel 42, thereby effectively transferring heat to the heat dissipation mechanism 4 for heat dissipation, ensuring the heat dissipation efficiency, and overcoming the problem of poor heat dissipation efficiency in the prior art.

[0034] The cooling channel 42 includes a mounting section and a heat exchange section 43 which are connected in sequence. The mounting section is located in the plate body 41. The heat exchange section 43 directly or indirectly exchanges heat with the special-shaped component 3. That is, the mounting section absorbs heat from the plate body 41, and the heat exchange section 43 directly exchanges heat with the special-shaped component 3, thereby increasing the heat dissipation efficiency of the special-shaped component 3 and ensuring that the regular components 2 can be arranged on the plate body 41 for reliable heat dissipation.

[0035] The heat-generating component includes an inductor 5, a through hole is formed in the middle of the inductor 5, and the heat exchange section 43 is arranged in the through hole. Heat is transferred to the potting glue through the inner diameter of the inductor 5, and then transferred to the heat exchange section 43 with a high thermal conductivity through the thermal conductive glue, providing a heat conduction channel for the inductor 5 to the heat exchange section 43. Compared with natural convection heat dissipation, solid heat transfer efficiency is higher. At the same time, refrigerant flows in the heat exchange section 43, which can quickly take away the heat conducted by the inductor 5.

[0036] The heat exchange section 43 is potted in the through hole by potting glue to increase the heat transfer efficiency.

[0037] There are multiple inductors 5, and the heat exchange section 43 passes through all the through holes of the inductors 5 in sequence. In particular, the axes of the through holes on all the inductors 5 are collinear, and the heat exchange section 43 passes through all the through holes in a straight line. Preferably, the axis of the heat exchange section 43 is collinear with the straight line on which the axes of all the through holes are located.

[0038] For the inductor 5 whose axes of the through holes are not in the same straight line, the heat exchange section 43 can be encapsulated on the outer peripheral side of the inductor 5 to dissipate heat.

[0039] Refrigerant flows in the cooling channel 42 , and the flow direction of the refrigerant is set according to the heat generation of the heat-generating components. If there are components that are sensitive to temperature (components with a lower operating temperature limit), the refrigerant can flow through the component first.

[0040] The electrical box also includes a shielding plate 6, which is arranged in the shell 1 and divides the shell 1 into two accommodating chambers. The plate body 41 is in one of the accommodating chambers, and the heat exchange section 43 is in the other accommodating chamber. The shielding plate 6 is used to separate the internal space of the shell 1, so that the heat dissipation mechanism 4 can exchange heat with the two accommodating chambers respectively, and heat between the two accommodating chambers will not be generated or transferred as little as possible. At the same time, the shielding plate 6 can isolate the electromagnetic radiation of the components in the electrical box and shield the electromagnetic interference of the inductor 5 on the components on the mainboard.

[0041] The electrical box further comprises a main board and a filter board, wherein the main board and the filter board are both fixedly arranged on the shielding plate 6, the regular components 2 are arranged on the main board, and the inductor 5 is arranged on the filter board.

[0042] The mainboard is arranged in one of the accommodating cavities, and the filter board is arranged in another of the accommodating cavities, so as to prevent the inductor 5 from generating electromagnetic interference to the mainboard.

[0043] The plate body 41 has a first mounting surface and a second mounting surface adjacent to each other, the regular component 2 is arranged on the first mounting surface, and the special-shaped component 3 is connected to the second mounting surface through the heat transfer mechanism, that is, the plate body 41 is located in the middle of the shell 11, and its first mounting surface and the second mounting surface are both spaced apart from the inner surface of the shell 11.

[0044] The plate body 41 is a rectangular parallelepiped structure, the top surface of the rectangular parallelepiped structure constitutes the first mounting surface, and the side surface of the rectangular parallelepiped structure constitutes the second mounting surface.

[0045] The refrigerant flowing in the cooling channel 42 includes water or a refrigerant.

[0046] The heat transfer mechanism includes a heat-conducting adhesive, and the low thermal resistance and adhesiveness of the heat-conducting adhesive are utilized to ensure the heat dissipation efficiency and the reliability of heat dissipation.

[0047] like Figure 4The electrical box shown includes: a shell 1; an inductor 5, which is arranged in the shell 1 and has a through hole formed on the inductor 5; a cooling channel 42, which is arranged in the through hole, and both ends of the cooling channel 42 pass through the shell 1 and are connected to the outside of the electrical box. The cooling channel 42 is used to directly dissipate the heat of the inductor 5 to increase the heat dissipation efficiency of the inductor 5. Preferably, the cooling channel 42 is encapsulated inside the through hole.

[0048] An air conditioner comprises the above-mentioned electrical appliance box.

[0049] When there are multiple electrical appliance boxes, the cooling channel 42 may pass through all the electrical appliance boxes in sequence, or the cooling channels 42 in multiple electrical appliance boxes may be arranged in parallel.

[0050] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An electrical box, characterized in that: include: Housing (1); Heat generating components are arranged in the housing (1) and are divided into regular components (2) and special-shaped components (3) according to their shapes; A heat dissipation mechanism (4) is arranged in the housing (1) and comprises a plate body (41) and a cooling channel (42); the regular component (2) is arranged on the plate body (41); the special-shaped component (3) is embedded in the cooling channel (42) or is in contact with and connected to the cooling channel (42) via a heat transfer mechanism; the cooling channel (42) comprises a mounting section and a heat exchange section (43) which are connected in sequence; the mounting section is located in the plate body (41); and the heat exchange section (43) directly or indirectly exchanges heat with the special-shaped component (3); The heat-generating component comprises an inductor (5), a through hole being formed in the middle of the inductor (5), and the heat exchange section (43) being arranged in the through hole; the electrical box further comprises a shielding plate (6), the shielding plate (6) being arranged in the shell (1) and dividing the shell (1) into two accommodating chambers, the plate body (41) being arranged in one of the accommodating chambers, and the heat exchange section (43) being arranged in the other of the accommodating chambers.

2. The electrical box according to claim 1, characterized in that: The heat exchange section (43) is potted in the through hole by potting glue.

3. The electrical box according to claim 1, characterized in that: There are multiple inductors (5), and the heat exchange section (43) passes through the through holes of all the inductors (5) in sequence.

4. The electrical box according to claim 1, characterized in that: The electrical box further comprises a main board and a filter board, wherein the main board and the filter board are both fixedly arranged on the shielding plate (6), the regular components are arranged on the main board, and the inductor (5) is arranged on the filter board.

5. The electrical box according to claim 4, characterized in that: The main board is arranged in one of the accommodating cavities, and the filter board is arranged in the other accommodating cavity.

6. The electrical box according to claim 1, characterized in that: The plate body (41) has a first mounting surface and a second mounting surface adjacent to each other, the regular component (2) is arranged on the first mounting surface, and the special-shaped component (3) is connected to the second mounting surface via the heat transfer mechanism.

7. The electrical box according to claim 6, characterized in that: The plate body (41) is a rectangular parallelepiped structure, the top surface of the rectangular parallelepiped structure constitutes the first mounting surface, and the side surface of the rectangular parallelepiped structure constitutes the second mounting surface.

8. The electrical box according to claim 1, characterized in that: The refrigerant flowing in the cooling channel (42) includes a cooling medium.

9. The electrical box according to claim 1, characterized in that: The heat transfer mechanism includes heat-conducting glue.

10. An air conditioner, characterized in that: The invention comprises the electrical box according to any one of claims 1 to 9.

Images