CN202310383U - Sealed outdoor rack possessing heat dissipation structure - Google Patents

Abstract

The utility model provides a sealed outdoor cabinet with a heat dissipation structure, comprising a cabinet body and a cabinet door of the sealed cabinet body, a heat conduction plate is arranged on the inner wall of the cabinet body, a circuit board is arranged inside the cabinet body, and the heat conduction The sheet is in contact with or close to the electronic device on the circuit board; a radiator is provided on the outer wall of the cabinet corresponding to the position of the heat conduction sheet. The heat generated by the electronic devices is conducted to the cabinet body through the heat conduction sheet, and then to the radiator from the cabinet body, and then dissipated into the air through the radiator. Good heat dissipation, simple heat dissipation structure, and small space inside the cabinet, especially suitable for small systems, especially wall-mounted cabinets.

Description

A sealed outdoor cabinet with heat dissipation structure

technical field

The utility model belongs to the field of cabinets and cabinets used for electrical equipment, in particular to a sealed outdoor cabinet with a heat dissipation structure.

Background technique

When electronic equipment is working, the output power often only accounts for a part of the input power of the equipment, and its power loss is generally dissipated in the form of heat energy, especially for some high-power components, such as electron tubes, transformers, transistors, etc., the heat generated by it. If it is not released in time, the temperature of the equipment will be too high, causing damage to components, shortening the service life, and even causing the whole machine to malfunction.

Existing heat dissipation structures usually achieve heat dissipation through fan cooling or air-conditioning refrigeration, but most of them have complex structures, take up a lot of space, and have high costs, so they are not suitable for small equipment. Another common heat dissipation structure is internal and external ventilation and heat dissipation. Its cost is relatively low. However, due to the air duct design required for this structure, the cabinet is not sealed, which will cause a series of protection problems such as waterproof, dustproof, and mildew proof.

Contents of the invention

The utility model provides a sealed outdoor cabinet which can meet the protection requirements and has a heat dissipation structure, and the heat dissipation structure has the advantages of small size, simple structure, high heat dissipation efficiency and the like.

In order to achieve the above purpose, the utility model provides a sealed outdoor cabinet with a heat dissipation structure, including a cabinet body and a cabinet door of the sealed cabinet body, heat conducting fins are arranged on the inner wall of the cabinet body, and a circuit board is arranged inside the cabinet body , the heat conduction sheet is in contact with or close to the electronic device on the circuit board; a radiator is provided on the outer wall of the cabinet corresponding to the position of the heat conduction sheet.

Preferably, the cabinet body is in the shape of a hexahedron, the heat conducting fins are fixed on the inner wall of one side of the cabinet body, and the circuit board is fixed on the inner wall of the other side perpendicular to one side of the cabinet body; The electronic components are inserted vertically on the circuit board and are in parallel contact with the heat conducting sheet.

Preferably, the heat conducting sheet is located on the inner wall of the top surface of the cabinet, and the circuit board is located on the inner wall of a side perpendicular to the top surface of the cabinet.

Preferably, the heat conducting sheet is fixed on the cabinet by screwing or riveting.

Preferably, the heat conducting sheet is a copper sheet or an aluminum sheet.

Preferably, a heat-conducting silica gel is provided between the heat-conducting sheet and the inner wall of the cabinet.

Preferably, a thermally conductive silica gel is provided between the thermally conductive sheet and the electronic device.

Preferably, the radiator includes a bottom plate and several fins on the bottom plate, and the bottom plate is fixed on the outer wall of the cabinet.

Preferably, the electronic device is a high-power electronic device.

Preferably, a waterproof adhesive strip is provided between the cabinet body and the cabinet door.

The beneficial effects of the utility model are: the heat generated by the electronic device is conducted to the cabinet body through the heat conduction sheet, and then transferred to the radiator by the cabinet body, and then radiated into the air through the radiator. The whole cabinet is in a sealed state, meeting the requirements of waterproof and dustproof Protection requirements, and at the same time can play a good role in heat dissipation, the heat dissipation structure is simple, occupying a small space inside the cabinet, especially suitable for small systems, especially wall-mounted cabinets.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a sealed outdoor cabinet with a heat dissipation structure provided by the present invention.

Fig. 2 is an internal schematic diagram of the sealed outdoor cabinet with heat dissipation structure provided by the utility model.

Fig. 3 is a partial cross-sectional view of the sealed outdoor cabinet with heat dissipation structure provided by the present invention.

FIG. 4 is an enlarged schematic view of P in FIG. 3 .

Fig. 5 is a partial cross-sectional view of another embodiment of the sealed outdoor cabinet with heat dissipation structure provided by the present invention.

Marked in the figure:

1-cabinet, 11-opening, 12-top, 13-back,

2- cabinet door,

3-circuit unit, 31-switch, 32-anti-reverse charge unit, 33-lightning protection unit, 34-circuit board, 341-electronic device,

4- heat conduction sheet,

5-radiator, 51-bottom plate, 52-fin,

6- Thermally conductive silicone.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1 and Fig. 2, the utility model provides a sealed outdoor cabinet with a heat dissipation structure, including a cabinet body 1 and a cabinet door 2 of the sealed cabinet body 1, and the inner wall of the cabinet body 1 is provided with a heat conducting sheet 4, so that A circuit board 34 is arranged inside the cabinet body 1, and the heat conducting sheet 4 is in contact with or close to the electronic device 341 on the circuit board; a radiator 5 is provided on the outer wall of the cabinet body 1 corresponding to the position of the heat conducting sheet 4 . The heat conduction sheet of the utility model is used to transfer the heat emitted by the electronic device to the cabinet body, so the heat conduction sheet and the electronic device are preferably in contact, but the utility model is not limited to the case of contact, as long as the heat conduction sheet is close to the electronic device, and The closer they are, the better the heat they radiate can be transferred out, and this situation is also within the protection scope of the present utility model.

As shown in Figure 2, the cabinet body 1 is in the shape of a hexahedron, including the corresponding top and bottom surfaces, the corresponding front and rear surfaces, and the corresponding left and right sides. ", "Left, Right", "Up, Down" and other terms representing orientation, wherein the so-called "front and back" represent the X direction in the accompanying drawings; the so-called "left and right" represent the Y direction in the accompanying drawings; the so-called "Up and down" in the drawings indicate the Z direction. These terms are only used for convenience of description, and cannot be interpreted as limiting the utility model, and the protection scope of the utility model shall be determined by the claims. The cabinet body 1 has an opening 11 at its front, and a cabinet door 2 for closing the opening 11 is provided at the opening 11 . A waterproof rubber strip (not shown) is also provided between the cabinet door 2 and the cabinet body 1 to play the function of sealing and waterproofing.

Materials that can be used as the cabinet body 1 include hot-dip galvanized sheets with good corrosion resistance.

The cabinet 1 is provided with a circuit unit 3, and its constituent units can be set according to the actual situation. This embodiment is specifically a solar charging circuit unit 3, including an anti-reverse charging unit 32 and an anti-lightning protection unit 33, wherein the anti-reverse charging unit 32 includes a circuit board 34 and a transistor 341 with higher power arranged on it. The solar panel (not shown) located outside the cabinet is connected to the anti-reverse charging unit 32 and the lightning protection unit 33 through the switch 31, and charges the battery (not shown), and the solar charging circuit unit 3 can prevent The risk of excessive current during solar panel reverse charging and lightning strikes, thus prolonging the service life of the system.

The electronic device 341 with higher power (transistor in this embodiment) is in contact with the heat conducting sheet 4 to transfer the heat generated by the electronic device 341 away. In order to improve the heat dissipation effect of the electronic device 341 , the heating surface of the electronic device 341 can be in surface contact with the heat conducting sheet 4 to increase the contact area. Specifically, the heat conducting sheet 4 is fixed on the inner wall of one side of the cabinet body 1, the circuit board provided with electronic devices is fixed on the inner wall of the other side perpendicular to one side of the cabinet body 1, and the electronic device 341 is vertically inserted in the On the circuit board, and in parallel contact with the heat conducting sheet 4. In order to ensure that the electronic device and the heat conduction sheet are more firmly bonded together, the electronic device is also fixed on the heat conduction sheet with screws. Because the way of dissipating heat is from bottom to top, it is preferable to arrange the heat conducting sheet 4 on the top surface 12 of the cabinet body 1, and the circuit board is arranged on the side perpendicular to the top surface, and the circuit board in Fig. 2 is arranged on the cabinet body 1 behind 13.

But it is not limited to this, as shown in Figure 5, the heat conducting sheet 4 can also be fixed on the inner wall of one side of the cabinet, the circuit board 34 provided with the electronic device is also fixed on the inner wall of the surface, and the electronic device 341 is connected with the heat conducting sheet 4 Relatively set and close to the heat conduction sheet 4.

The heat conduction sheet 4 is preferably made of metal with high thermal conductivity, such as aluminum sheet or copper sheet.

The heat conducting sheet 4 can be installed on the inner wall of the cabinet body 1 through various mechanical connection methods such as welding, riveting, plugging, screwing and the like.

Referring to FIG. 3 and FIG. 4 , the radiator 5 is provided on the outer wall of the cabinet body 1 and corresponds to the heat conducting fins 4 on the inner wall of the cabinet body 1 . The radiator 5 includes a bottom plate 51 and a plurality of fins 52 located on the bottom plate 51 , the bottom plate 51 is installed and fixed on the cabinet body 1 , and the fins 52 can play the role of heat dissipation. The greater the number of fins 52, the larger the heat dissipation area and the better the heat dissipation effect.

The bottom plate 51 and the fins 52 can be integrally formed, or connected together by various mechanical connection methods such as welding, riveting, inserting, screwing and the like.

The bottom plate 51 can be installed and fixed on the cabinet body 1 through various mechanical connection methods such as welding, riveting, plugging, screwing and the like.

The radiator 5 can be made of aluminum alloy with high thermal conductivity and easy processing and forming, such as aluminum alloys with grades 6063 and 6005.

A heat conduction material is provided on the part where the heat conduction sheet 4 is in contact with the electronic device 341, or on the part where the heat conduction sheet 4 contacts the inner wall of the cabinet body 1, to reduce the thermal conduction resistance between the heat conduction sheet 4 and the electronic device 341 , or reduce the heat conduction resistance between the heat conduction sheet 4 and the cabinet 1, the heat conduction material is preferably heat conduction silica gel 6.

The heat generated by the electronic device 341 is transmitted from bottom to top as shown by the arrow in Figure 3: the electronic device 341 is in contact with the heat conduction sheet 4, and the heat generated by it is first conducted to the heat conduction sheet 4, and then transferred by the heat conduction sheet 4 to the cabinet 1, and then transferred to the radiator 5 by the cabinet 1, and finally, the radiator 5 directly diffuses into the surrounding air through natural convection heat dissipation.

The utility model radiates heat from the inside of the cabinet 1 to the outside by arranging heat conducting fins 4 and radiators 5 inside and outside the cabinet 1 respectively; while performing heat dissipation, the cabinet as a whole is sealed, and the cabinet 1 is made of sheet metal parts It is welded, the cabinet door 2 closes the opening 11 of the cabinet body 1, and a waterproof adhesive strip can also be set between the cabinet body 1 and the cabinet door 2 used to seal the cabinet body 1, so as to further achieve the purpose of sealing, so the utility model guarantees It meets the protection requirements of waterproof, dustproof, mildewproof, etc., and will not cause damage to the internal circuit. In addition, since the heat conduction sheet 4 takes up little space inside the cabinet, it is especially suitable for small systems, especially wall-mounted cabinets.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A sealed outdoor cabinet with a heat dissipation structure, including a cabinet body (1) and a cabinet door (2) of the sealed cabinet body, characterized in that: the inner wall of the cabinet body (1) is provided with a heat conducting sheet (4) , the cabinet is provided with a circuit board (34), and the heat conducting sheet (4) is in contact with or close to the electronic device (341) on the circuit board; radiator (5). 2. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: the cabinet body (1) is in the shape of a hexahedron, and the heat conducting sheet (4) is fixed on the inner wall of one side of the cabinet body The circuit board (34) is fixed on the inner wall of the other side perpendicular to one side of the cabinet; the electronic device (341) is vertically inserted on the circuit board (34), and is connected with the heat conducting sheet ( 4) Parallel contact. 3. The sealed outdoor cabinet with heat dissipation structure according to claim 2, characterized in that: the heat conducting sheet (4) is located on the inner wall of the top surface (12) of the cabinet, and the circuit board (34) is located The inner wall of one side perpendicular to the top surface (12) of the cabinet body. 4. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: the heat conducting sheet (4) is fixed on the cabinet body (1) by screwing or riveting. 5. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: the heat conducting sheet (4) is a copper sheet or an aluminum sheet. 6. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: a heat-conducting silica gel (6) is provided between the heat-conducting sheet (4) and the inner wall of the cabinet body (1). 7. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: a heat-conducting silica gel (6) is provided between the heat-conducting sheet (4) and the electronic device (341). 8. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: the radiator (5) includes a bottom plate (51) and several fins (52) on the bottom plate, the bottom plate (51 ) is fixed on the outer wall of the cabinet. 9. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: the electronic device (341) is a high-power electronic device. 10. The sealed outdoor cabinet with heat dissipation structure according to claim 1, characterized in that: a waterproof adhesive strip is provided between the cabinet body (1) and the cabinet door (2).

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