Electrical fireproof current-limiting protector with isolation contact

Abstract

The utility model relates to an electrical fireproof current-limiting protector with an isolation contact, which comprises a shell, a longitudinally through radiating tube is fixed in the shell, the upper end and the lower end of the radiating tube are fixedly connected with diffusion tubes with increased lengths and widths, and the radiating tube and the diffusion tubes form an I shape; the top faces of the diffusion pipes at the upper ends of the heat dissipation pipes are open, the bottom faces of the diffusion pipes at the lower ends of the heat dissipation pipes are open, and first heat dissipation holes are formed in the shell corresponding to the diffusion pipes at the upper end and the lower end and directly communicate with the diffusion pipes. Second heat dissipation holes are formed in the left side face and the right side face of the shell. According to the utility model, the vertically through radiating tube is arranged in the shell, and the electronic devices in the shell are isolated through the radiating tube, so that water drops are prevented from entering the radiating holes to be in contact with the electronic devices to cause short circuit under the condition of ensuring ventilation and radiating, and the device can also be used in a dripping environment. And the water drops fall into the heat dissipation pipe and are heated and vaporized to take away heat, so that the heat dissipation effect on the electronic device is further promoted.

Description

Technical Field

[0001] This utility model relates to the field of current-limiting protectors, and in particular to an electrical fire-resistant current-limiting protector with an isolating contact. Background Technology

[0002] In electrical fire-resistant current-limiting protectors, to prevent water droplets from entering the heat dissipation holes and causing internal circuit short circuits, a waterproof structure is added to the heat dissipation holes on the top of the housing, as shown in patent CN215343881U. This structure utilizes the weight of the water droplets to push the sealing cover downwards, sealing the outer frame and preventing water droplets from entering. However, in practical applications, the weight of water droplets is extremely small, often failing to trigger due to insufficient trigger sensitivity of the sealing cover. Therefore, improvements have been made. Utility Model Content

[0003] The purpose of this application is to provide an electrical fire-resistant current-limiting protector with isolation contacts, which aims to solve the problems existing in the prior art.

[0004] This application provides an electrical fireproof current-limiting protector with isolation contacts, including a housing and electronic components fixed inside the housing. The housing is characterized by a longitudinally penetrating heat dissipation pipe fixed inside, with diffuser pipes of increased length and width fixedly connected to both ends of the heat dissipation pipe, forming an I-shape. The top surface of the diffuser pipe at the upper end of the heat dissipation pipe is open, and the bottom surface of the diffuser pipe at the lower end of the heat dissipation pipe is open. First heat dissipation holes are provided on the housing corresponding to the diffuser pipes at both ends, and these first heat dissipation holes are directly connected to the diffuser pipes. Second heat dissipation holes are provided on both the left and right sides of the housing.

[0005] Furthermore, the diffuser tubes at the upper and lower ends of the heat dissipation pipe are fixedly connected to the top and bottom surfaces of the housing, respectively. The first heat dissipation holes at the upper and lower ends of the housing are connected through the heat dissipation pipe, and the heat dissipation pipe isolates the first heat dissipation holes from the internal space of the housing.

[0006] Furthermore, the two opposite sidewalls inside the heat pipe are alternately provided with inwardly protruding ridges.

[0007] Furthermore, the raised ridges correspond to the recesses formed on the outer surface of the heat pipe.

[0008] Furthermore, the heat pipe is made of stainless steel.

[0009] Furthermore, the second heat dissipation hole is circular, and a cover is fixed above the second heat dissipation hole.

[0010] The beneficial effects of this invention are as follows: This invention features a vertically penetrating heat dissipation pipe within the housing. This heat dissipation pipe isolates the electronic components within the housing, ensuring ventilation and heat dissipation while preventing water droplets from entering the heat dissipation holes and contacting the electronic components, thus preventing short circuits. This allows the device to be used even in dripping environments. Furthermore, water droplets falling into the heat dissipation pipe vaporize upon heating, carrying away heat and further enhancing the heat dissipation effect on the electronic components. The enlarged diffuser pipes connected to both ends of the heat dissipation pipe ensure a larger number of heat dissipation holes, occupying a larger area, thereby promoting heat dissipation and highlighting the small size of the heat dissipation pipe, reducing the space it occupies. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the overall structure of the heat sink and diffuser.

[0014] Figure 4 This is a partial structural diagram of the heat pipe.

[0015] In the picture:

[0016] 1. Housing; 2. Electronic components; 3. Heat sink; 4. Diffuser; 5. First heat dissipation hole; 6. Raised ridge; 7. Second heat dissipation hole; 8. Shield. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 and Figure 2 As shown, an electrical fire-resistant current-limiting protector with isolating contacts includes a housing 1 and electronic components 2 fixed inside the housing 1. A longitudinally penetrating heat dissipation pipe 3 is fixed inside the housing 1. Both ends of the heat dissipation pipe 3 are fixedly connected to diffuser pipes 4 with increased length and width, forming an I-shape with the heat dissipation pipe 3 and the diffuser pipes 4. Figure 3As shown. The electronic components 2 inside the housing 1 can be fixedly connected to the outer surface of the heat sink 3 or the diffuser 4, so that the heat generated by the electronic components 2 can be dissipated through the heat sink 3 or the diffuser 4. The projected area of ​​the diffuser 4 is larger than that of the heat sink 3, which ensures that there are more first heat dissipation holes 5, occupying a certain area, thereby promoting the ventilation and heat dissipation effect. Furthermore, the cross-sectional area of ​​the heat sink 3 is relatively smaller, occupying less space inside the housing 1, so that the overall volume of the protector can be reduced.

[0019] The diffuser 4 at the upper end of the heat dissipation pipe 3 is open at the top, and the diffuser 4 at the lower end of the heat dissipation pipe 3 is open at the bottom. The housing 1 has first heat dissipation holes 5 corresponding to the diffuser 4 at both ends, and these holes are directly connected to the diffuser 4. The diffuser 4 at both ends of the heat dissipation pipe 3 is fixedly connected to the top and bottom surfaces of the housing 1, respectively. The first heat dissipation holes 5 at both ends of the housing 1 are connected through the heat dissipation pipe 3, isolating the first heat dissipation holes 5 from the internal space of the housing 1. The first heat dissipation holes 5 at both ends form air inlets and outlets, creating airflow within the heat dissipation pipe 3, thereby carrying away heat conducted to the heat dissipation pipe 3 or diffuser 4, achieving ventilation and heat dissipation. Furthermore, the heat dissipation pipe 3 isolates the first heat dissipation holes 5 from the electronic components 2 inside the housing 1. Even if water drips above the protector and enters the first heat dissipation hole 5, the water will flow inside the heat dissipation pipe 3 / diffraction pipe 4 and will not contact the electronic components 2, thus protecting the electronic components 2. The water droplets evaporate within the heat dissipation pipe 3 / diffraction pipe 4, carrying away heat and further improving the heat dissipation effect of the heat dissipation pipe 3 / diffraction pipe 4.

[0020] like Figure 4 As shown, the heat sink 3 has alternating inwardly protruding ridges 6 on two opposite sidewalls inside. The ridges 6 increase the surface area of ​​the heat sink 3, thereby increasing the heat dissipation effect. The ridges 6 also form recesses on the outer surface of the heat sink 3, making the wall thickness at the ridges 6 the same as the thickness of the straight wall portion of the heat sink 3, which helps to dissipate heat quickly.

[0021] The heat dissipation pipe 3 is made of stainless steel. It has both the thermal conductivity of metal and the waterproof and rustproof properties, thus ensuring a long service life.

[0022] The housing 1 has second heat dissipation holes 7 on both its left and right sides, such as... Figure 1 As shown, the second heat dissipation hole 7 is circular, and a shield 8 is fixed above the second heat dissipation hole 7. The two opposing second heat dissipation holes 7 form a horizontal airflow inside the housing 1, which plays a role in ventilation and heat dissipation for the electronic components 2 inside the housing 1. Moreover, the shield 8 covers the second heat dissipation hole 7 from top to bottom, which plays a role in preventing water dripping from above from entering the interior of the housing 1.

[0023] The above embodiments are not intended to limit the present invention. Unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention is not limited to the examples above. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention. Furthermore, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

Claims

1. An electrical fire-resistant current-limiting protector with isolating contacts, comprising a housing and electronic components fixed within the housing, characterized in that, A longitudinally penetrating heat dissipation pipe is fixed inside the housing. Both ends of the heat dissipation pipe are fixedly connected to diffuser pipes with increased length and width, so that the heat dissipation pipe and the diffuser pipe form an I-shape. The top surface of the diffuser pipe at the upper end of the heat dissipation pipe is open, and the bottom surface of the diffuser pipe at the lower end of the heat dissipation pipe is open. The housing has a first heat dissipation hole corresponding to the diffuser pipe at the upper and lower ends, and the first heat dissipation hole is directly connected to the diffuser pipe. The housing has a second heat dissipation hole on both the left and right sides.

2. The electrical fire-resistant current-limiting protector with isolating contacts according to claim 1, characterized in that, The diffuser tubes at the upper and lower ends of the heat dissipation pipe are fixedly connected to the top and bottom surfaces of the housing, respectively. The first heat dissipation holes at the upper and lower ends of the housing are connected through the heat dissipation pipe, and the heat dissipation pipe isolates the first heat dissipation holes from the internal space of the housing.

3. The electrical fire-resistant current-limiting protector with isolating contacts according to claim 1, characterized in that, The heat dissipation pipe has two opposing side walls with alternating inward protrusions.

4. The electrical fire-resistant current-limiting protector with isolating contacts according to claim 3, characterized in that, The protruding ridges correspond to the recesses formed on the outer surface of the heat dissipation pipe.

5. The electrical fire-resistant current-limiting protector with isolating contacts according to claim 1, characterized in that, The heat pipe is made of stainless steel.

6. The electrical fire-resistant current-limiting protector with isolating contacts according to claim 1, characterized in that, The second heat dissipation hole is circular, and a cover is fixed above the second heat dissipation hole.

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