Heat dissipation structure and control box

Abstract

The utility model belongs to the field of heat dissipation, and particularly discloses a heat dissipation structure and a control box, the heat dissipation structure comprises a shielding case, a first heat dissipation assembly installed on one side of the shielding case and a second heat dissipation assembly installed on the other side of the shielding case, the end face of one side of the shielding case is detachably connected with conductive sponge, and the shielding case is used for shielding electromagnetic waves; the control box comprises a box body, heat dissipation holes formed in the box body and a heat dissipation structure, the shielding cover is used for covering the heat dissipation holes, and the first heat dissipation assembly and the second heat dissipation assembly are located on the inner side and the outer side of the box body respectively. By adopting the scheme of the utility model, the problem that electromagnetic waves are easy to leak from a gap at the joint of the shielding cover and the box body can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of heat dissipation, and specifically relates to a heat dissipation structure and a control box. Background Art

[0002] There are many high-power heating components in the high-voltage control cabinet, which generate a lot of heat. The heat dissipation through the cabinet itself is far from meeting the heat dissipation requirements. The excessive temperature in the cabinet will cause the components to burn. In the prior art, an exhaust fan is usually installed on the cabinet to dissipate heat to achieve the purpose of reducing the temperature of components. However, the ventilation of the cabinet must be ensured when the exhaust fan is used for heat dissipation, which will bring the risk of electromagnetic wave leakage, causing human radiation and signal interference of peripheral equipment. In addition, the high-voltage control cabinet will also generate electromagnetic waves, which will also generate radiation during the transmission process. Radiation has many effects on human health, such as affecting the eyes, ears, nervous system and immune system. Long-term exposure to radiation may also cause problems with the musculoskeletal and endocrine systems.

[0003] To solve the above problems, the prior art usually requires installing a shielding cover on the outside of the exhaust fan to shield the electromagnetic wave leakage at the exhaust fan outlet. However, such a design still has the following problems: gaps are easily generated at the connection between the shielding cover and the box body. Therefore, higher requirements are placed on the processing accuracy of the contact surface between the shielding cover and the box body. Otherwise, electromagnetic waves are likely to leak from the gap at the connection between the shielding cover and the box body. However, the higher the processing accuracy, the higher the cost. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a heat dissipation structure and a control box to solve the problem that electromagnetic waves are easily leaked from the gap at the connection between the shielding cover and the box body.

[0005] According to the embodiment of the utility model, the utility model adopts the following technical solution:

[0006] The heat dissipation structure includes a shielding cover, a first heat dissipation component installed on one side of the shielding cover, and a second heat dissipation component installed on the other side of the shielding cover. A conductive sponge is detachably connected to an end surface of one side of the shielding cover, and the shielding cover is used to shield electromagnetic waves.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] 1. By setting a conductive sponge on one side of the shielding cover, when the shielding cover is installed on the control box, the conductive sponge contacts the control box body, eliminating the gap between the shielding cover and the control box after installation, and making the gap conductive to prevent electromagnetic wave leakage. And through a certain deformation of the conductive sponge, the processing accuracy requirements for the contact surface between the shielding cover and the control box body are reduced, which is convenient for cost control.

[0009] 2. A first heat dissipation component and a second heat dissipation component are respectively arranged on both sides of the shielding cover. That is, after assembly is completed, taking the first heat dissipation component being located in the control box and the second heat dissipation component being located outside the control box as an example, the first heat dissipation component transfers the heat in the control box to the shielding cover for dissipation, while the second heat dissipation component outside the control box can further assist the heat dissipation at the shielding cover and improve the heat dissipation efficiency.

[0010] Furthermore, the first heat dissipation component includes a heat dissipation fan, and a plurality of ventilation holes are provided on the shielding cover.

[0011] Furthermore, the ventilation hole is circular, and the inner diameter of the ventilation hole is not greater than 2 mm.

[0012] Furthermore, the shielding cover comprises a box-shaped cover portion with an opening on one side and a ring-shaped connecting portion fixed to the open end of the cover portion, and the conductive sponge is fixed on the connecting portion.

[0013] Furthermore, the second heat dissipation component includes a refrigerant pipe detachably connected to the outside of the shielding cover, and the refrigerant pipe is used for the cooling medium to enter and circulate.

[0014] Furthermore, a side wall of the cover portion is provided with an annular installation groove, and the refrigerant pipe is clamped in the installation groove.

[0015] Furthermore, two refrigerant pipes are provided, and the refrigerant pipes include a U-shaped mounting portion and an inlet portion and an outlet portion respectively connected to both ends of the mounting portion, and the mounting portion is clamped in the mounting groove; the second heat dissipation component also includes a U-shaped fixing card, which is arranged on the outside of the mounting portion and is detachably connected to the cover portion.

[0016] Furthermore, a plurality of heat-conducting ribs are fixed on the inner wall of the cover portion.

[0017] According to the embodiment of the utility model, the utility model also adopts the following technical solution:

[0018] The control box comprises a box body, heat dissipation holes opened on the box body and a heat dissipation structure. The shielding cover is used to cover the heat dissipation holes. The first heat dissipation component and the second heat dissipation component are respectively located on the inner side and the outer side of the box body.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The control box designed based on the heat dissipation structure has high heat dissipation efficiency. While meeting the heat dissipation requirements, it can reduce the risk of electromagnetic wave leakage and has high market application value.

[0021] Furthermore, the shielding cover is detachably connected to the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of the control box of an embodiment of the utility model.

[0023] Figure 2 It is an exploded view of the control box of the embodiment of the utility model.

[0024] Figure 3 It is a schematic diagram of the structure of the shielding cover in the embodiment of the utility model.

[0025] In the figure: 1. Box body; 2. Cover part; 3. Ventilation hole; 4. Exit part; 5. Inlet part; 6. Fixing card; 7. Connection part; 8. Shielding cover; 9. Installation part; 10. Refrigerant pipe; 11. Installation slot; 12. Conductive sponge; 13. Cooling fan; 14. Cooling hole; 15. Thermal rib. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below with reference to the accompanying drawings, and specific implementation methods are given.

[0027] like Figure 1 , Figure 2 As shown, the control box includes a box body 1, heat dissipation holes 14 opened on the box body 1, and a heat dissipation structure.

[0028] The heat dissipation structure includes a shielding cover 8, a first heat dissipation component installed on one side of the shielding cover 8, and a second heat dissipation component installed on the other side of the shielding cover 8. The shielding cover 8 is used to cover the heat dissipation hole 14. The first heat dissipation component and the second heat dissipation component are respectively located on the inner side and the outer side of the box body 1. The following description assumes that after the shielding cover 8 is assembled on the box body 1, the first heat dissipation component is located on the inner side of the box body 1, and the second heat dissipation component is located on the outer side of the box body 1.

[0029] The shielding cover 8 is used to shield electromagnetic waves. The shielding cover 8 is detachably connected to the box body 1. Specifically, the shielding cover 8 is made of stainless steel. A conductive sponge 12 is detachably connected to one end face of the shielding cover 8. When assembled, the conductive sponge 12 is located between the shielding cover 8 and the side of the box body 1. The conductive sponge 12 eliminates the gap between the shielding cover 8 and the box body 1 after installation, thereby reducing electromagnetic leakage at the gap between the shielding cover 8 and the box body 1. The conductive sponge 12 is a dielectric material produced by a polymer composite foaming technology in the prior art.

[0030] The shielding cover 8 includes a box-shaped cover part 2 with an opening on one side and a ring-shaped connecting part 7 fixed to the open end of the cover part 2. The conductive sponge 12 is fixed on the connecting part 7. The connecting part 7 and the box body 1 are detachably connected. Specifically, the cover part 2 is in the shape of a rectangular parallelepiped, and the connecting part 7 is in the shape of a rectangular ring. A number of threaded holes are provided on the connecting part 7 and the box body 1. The conductive sponge 12 also has mounting holes. The conductive sponge 12 is attached to the connecting part 7. After the bolts are passed through the threaded holes on the connecting part 7 and the mounting holes on the conductive sponge 12, the connecting part 7 is pressed against the box body 1, and the bolts are tightened in the threaded holes on the box body 1. When the shielding cover 8 is installed on the box body 1, the shielding cover 8 completely covers the heat dissipation holes 14 to reduce the leakage of electromagnetic waves at the heat dissipation holes 14.

[0031] In this embodiment, the first heat dissipation component adopts the principle of air cooling and the second heat dissipation component adopts the principle of liquid cooling as an example to describe the first heat dissipation component and the second heat dissipation component. In the actual design process, the first heat dissipation component and the second heat dissipation component can both choose air cooling or liquid cooling according to actual conditions.

[0032] The first heat dissipation component includes a heat dissipation fan 13. During the actual installation process, the heat dissipation fan 13 is fixed to the inner side of the box body 1. The heat dissipation fan 13 is located at the heat dissipation hole 14. The heat in the box body 1 is guided to the heat dissipation hole 14 through the heat dissipation fan 13 for ventilation and heat exchange, thereby achieving heat dissipation inside the box body 1. To facilitate ventilation, a plurality of ventilation holes 3 are provided on the shielding cover 8. When the diameter of the ventilation hole 3 is smaller than the wavelength of the electromagnetic wave, the electromagnetic wave can be effectively shielded. In order to facilitate the processing of the ventilation hole 3, in this embodiment, the ventilation hole 3 is circular, and the inner diameter of the ventilation hole 3 is not greater than 2 mm.

[0033] Since the ventilation hole 3 has a small aperture, it has a certain impact on the heat dissipation effect of ventilation heat exchange. In order to ensure the heat dissipation efficiency, a second heat dissipation component is designed. In this embodiment, the second heat dissipation component includes a refrigerant pipe 10 detachably connected to the outside of the shielding cover 8. The refrigerant pipe 10 is used for the cooling medium to pass and circulate. In actual use, the cooling medium can be selected from cooling water or cooling oil in the prior art.

[0034] The side wall of the cover part 2 is provided with an annular mounting groove 11, and the refrigerant pipe 10 is stuck in the mounting groove 11. Specifically, there are two refrigerant pipes 10, and the refrigerant pipe 10 includes a U-shaped mounting part 9 and an inlet part 5 and an outlet part 4 respectively connected to the two ends of the mounting part 9. The mounting part 9 is stuck in the mounting groove 11. The refrigerant pipe 10 is limited by the mounting groove 11, and the cooling medium is passed from the inlet part 5 into the refrigerant pipe 10. The cooling medium is discharged from the outlet part 4 after passing through the mounting part 9. The continuous passage of the cooling medium can take away the heat at the shielding cover 8. In the actual design process, a circulation pipe can also be connected between the inlet part 5 and the outlet part 4 to realize the recycling of the cooling medium. The second heat dissipation component also includes a U-shaped fixing card 6, which is arranged on the outside of the mounting part 9 and is detachably connected to the cover part 2. Specifically, the fixing card 6 is bolted to the cover part 2, and the refrigerant pipe 10 is fixed to the shielding cover 8 by the fixing card 6.

[0035] Combination Figure 3 As shown, a plurality of heat-conducting ribs 15 are fixed to the inner wall of the cover portion 2. Through the arrangement of the heat-conducting ribs 15, when the cooling fan 13 brings the heat in the box body 1 to the shielding cover 8, the heat-conducting ribs 15 can increase the heat exchange area, and transfer more heat in the hot air to the cover portion 2 through the heat-conducting ribs 15, and then take the heat away through the refrigerant pipe 10 arranged outside the cover portion 2, thereby further improving the heat dissipation efficiency.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Heat dissipation structure, characterized in that: It includes a shielding cover, a first heat dissipation component installed on one side of the shielding cover, and a second heat dissipation component installed on the other side of the shielding cover. A conductive sponge is detachably connected to an end surface of one side of the shielding cover. The shielding cover is used for shielding electromagnetic waves.

2. The heat dissipation structure according to claim 1, characterized in that: The first heat dissipation component includes a heat dissipation fan, and a plurality of ventilation holes are provided on the shielding cover.

3. The heat dissipation structure according to claim 2, characterized in that: The ventilation hole is circular, and the inner diameter of the ventilation hole is no greater than 2 mm.

4. The heat dissipation structure according to claim 1, characterized in that: The shielding cover comprises a box-shaped cover part with an opening on one side and a ring-shaped connecting part fixed at the opening end of the cover part, and the conductive sponge is fixed on the connecting part.

5. The heat dissipation structure according to claim 4, characterized in that: The second heat dissipation component includes a refrigerant pipe detachably connected to the outside of the shielding cover, and the refrigerant pipe is used for the cooling medium to pass through and circulate.

6. The heat dissipation structure according to claim 5, characterized in that: The side wall of the cover portion is provided with an annular installation groove, and the refrigerant pipe is clamped in the installation groove.

7. The heat dissipation structure according to claim 6, characterized in that: The refrigerant pipes are provided with two, and the refrigerant pipes include a U-shaped mounting portion and an inlet portion and an outlet portion respectively connected to both ends of the mounting portion, and the mounting portion is clamped in the mounting groove; the second heat dissipation component also includes a U-shaped fixing card, which is arranged on the outside of the mounting portion and is detachably connected to the cover portion.

8. The heat dissipation structure according to claim 4, characterized in that: A plurality of heat-conducting ribs are fixed on the inner wall of the cover portion.

9. Control box, characterized in that: It comprises a box body, heat dissipation holes opened on the box body and a heat dissipation structure as claimed in any one of claims 1 to 8, wherein a shielding cover is used to cover the heat dissipation holes, and a first heat dissipation component and a second heat dissipation component are respectively located on the inner side and the outer side of the box body.

10. The control box according to claim 9, characterized in that: The shielding cover is detachably connected to the box body.

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