Ventilation structure of switch cabinet
By creating a high-pressure zone on the top of the switchgear and using a corrugated structure design, the ventilation, heat dissipation, and protection issues of the switchgear in high-temperature, high-humidity, and high-dust environments are solved, achieving a balance between efficient heat dissipation and a high level of protection.
Patent Information
- Application Number
- CN202423156728.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing switchgear cannot simultaneously meet the requirements of good ventilation and heat dissipation and high protection level in high temperature, high humidity and high dust environment. Ordinary top cover structure cannot form a high-pressure zone to prevent dust from entering, so it is necessary to increase the dustproof level of the filter.
It adopts a high-pressure zone formed by the fan and the top of the ventilation frame and a corrugated structure design. Hot air is discharged through heat dissipation holes to prevent dust from entering and meet the ventilation requirements of IP55 protection level.
It effectively reduces the temperature of the switchgear in high temperature, high humidity, and high dust environments, reduces dust ingress, improves waterproof rating, and ensures safe operation of the equipment.
Smart Images
Figure CN223638854U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of switch cabinet technology, and specifically relates to a ventilation structure for switch cabinets. Background Technology
[0002] In certain specific environments, such as high temperature, high humidity, and high dust, there are special requirements for the protection level of switchgear cabinets. Switchgear generates a significant amount of heat during operation; the higher the current carrying capacity of the copper busbars, the more heat is generated. Excessive heat reduces the current carrying capacity of the copper busbars, as well as the lifespan and reliability of the switchgear. Therefore, switchgear needs good ventilation and heat dissipation capabilities. However, good protection levels and good heat dissipation capabilities are often contradictory.
[0003] In existing technologies, the typical top cover structure of switchgear often places ventilation holes on the side of the fan enclosure, such as... Figure 1 As shown. Although it can achieve corresponding heat dissipation and waterproofing capabilities, it cannot form a small "high-pressure zone" to prevent dust from entering, and a stainless steel filter needs to be added to improve the dustproof level.
[0004] In view of the aforementioned problems, it is necessary to make reasonable improvements to the existing switchgear ventilation structure. To this end, the applicant has developed a beneficial design, and the technical solution described below arises from this context. Utility Model Content
[0005] The purpose of this utility model is to provide a ventilation structure for switch cabinets. Through the high-pressure zone formed between the fan and the top of the ventilation frame and the corrugated structure design, it not only solves the environmental problems such as high temperature, high humidity and high dust in the working environment, but also meets the requirements of switch cabinets for high protection level.
[0006] The purpose of this utility model is achieved as follows: a ventilation structure for a switch cabinet, including a ventilation mechanism, which includes a ventilation frame that is closed on all sides and top and has an open bottom, and a fan assembly. In use, the ventilation frame is set on the top of the switch cabinet and communicates with the cabinet cavity of the switch cabinet through the open. The fan assembly is fixedly set at the open. The ventilation frame has heat dissipation holes on the edge of the open, and the openings of the heat dissipation holes face downward.
[0007] In a specific embodiment of this utility model, the opening is bent inward around its perimeter to form a bent edge, and the heat dissipation holes are spaced out on the bent edge.
[0008] In another specific embodiment of this utility model, the fan assembly includes a fan, a fan bracket, and a fan enclosure. The fan is fixedly installed inside the ventilation frame by the fan bracket, and the fan enclosure is installed around the fan and fixed to the ventilation frame.
[0009] In another embodiment of the utility model, the distance between the heat dissipation hole of the ventilation frame and the top of the ventilation frame is less than 40mm.
[0010] In another embodiment of the utility model, the heat dissipation hole is a waist-shaped hole.
[0011] The utility model discloses a ventilation mechanism of switch cabinet, which comprises a ventilation frame and a fan assembly, wherein the ventilation frame is provided with an open edge, and the fan assembly is arranged on the open edge of the ventilation frame, and the fan assembly is connected with the open edge of the ventilation frame through a fan support. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a schematic diagram of the ventilation structure in the prior art;
[0013] Figure 2 It is a structural schematic diagram of an embodiment of the utility model;
[0014] Figure 3 It is a front view of the embodiment; Figure 1
[0015] Figure 4 It is a side view of the embodiment. Figure 1
[0016] In the drawing: 1. ventilation mechanism, 11. ventilation frame, 111. open edge, 1111. heat dissipation hole, 112. bent edge, 12. fan assembly, 121. fan, 122. fan support, 123. fan fence. DETAILED DESCRIPTION
[0017] The specific embodiments of the utility model are described in detail below with reference to the drawings, but the description of the embodiments is not the limitation of the technical scheme, and any formal but not substantial change according to the concept of the utility model should be regarded as the protection scope of the utility model.
[0018] In the following description, the directional or positional concepts of up, down, left, right, front and back are based on the positions shown in the corresponding drawings, and are only used to facilitate the description of the technical solutions provided by the utility model and simplify the description, and therefore cannot be understood as a special limitation on the technical solutions provided by the utility model.
[0019] Please refer to Figure 2 、 Figure 3 The utility model relates to a switchgear ventilation structure, including ventilation mechanism 1, ventilation mechanism 1 including the ventilation frame 11 of the bottom of the open mouth 111 of the four around and top closure and fan assembly 12, ventilation frame 11 sets up at the top of switchgear under the use state, and by open mouth 111 with the cabinet cavity of switchgear is communicated, the fan assembly 12 fixedly set at open mouth 111, ventilation frame 11 is provided with heat dissipation hole 1111 on the around edge of open mouth 111, the opening of heat dissipation hole 1111 is downward. In this embodiment, the open mouth 111 is inwardly bent and constitutes a bent edge 112, and a plurality of heat dissipation holes 1111 are arranged on the bent edge 112.
[0020] Please refer to Figure 3 and in combination with Figure 1 、 Figure 2 The fan assembly 12 includes a fan 121, a fan bracket 122, and a fan fence 123. The fan 121 is fixedly arranged in the ventilation frame 11 through the fan bracket 122. The fan fence 123 is arranged at the periphery of the fan 121 and is fixed with the ventilation frame 11.
[0021] Further, the distance between the heat dissipation hole 1111 of the ventilation frame 11 and the top of the ventilation frame 11, i.e., the reserved space height, is preferably less than 40 mm.
[0022] In this embodiment, when the reserved space height is set to 32 mm, the heat dissipation hole 1111 of the ventilation frame 11 is a waist-shaped hole with a size of 530 mm, excellent heat dissipation effect can be achieved, and the reserved space can still maintain a relatively high air pressure area to prevent the suction of external dust.
[0023] When the heat dissipation hole 1111 of the ventilation frame 11 is 34 mm away from the top of the switchgear, the hot air squeezed out of the cabinet will not be bounced back into the cabinet by the top plate or affect the exhaust of the hot air in the cabinet, thereby reducing the heat dissipation effect. It can also effectively prevent the entry of lateral water, thereby ensuring the requirements of high protection level.
Claims
1. A ventilation structure for a switchgear, comprising a ventilation mechanism (1), wherein the ventilation mechanism (1) comprises a ventilation frame (11) having a closed perimeter and top and an open bottom (111) and a fan assembly (12), the ventilation frame (11) being disposed on the top of the switchgear in use and communicating with the cabinet cavity of the switchgear through the open bottom (111), and the fan assembly (12) being fixedly disposed at the open bottom (111), characterized in that: The ventilation frame (11) has heat dissipation holes (1111) on the edge of the opening (111), and the openings of the heat dissipation holes (1111) face downwards.
2. The ventilation structure for a switchgear according to claim 1, characterized in that: The opening (111) is bent inward around its perimeter to form a bent edge (112), and the heat dissipation holes (1111) are spaced apart on the bent edge (112).
3. The ventilation structure for a switchgear according to claim 1, characterized in that: The fan assembly (12) includes a fan (121), a fan bracket (122), and a fan enclosure (123). The fan (121) is fixedly installed inside the ventilation frame (11) by the fan bracket (122), and the fan enclosure (123) is installed around the fan (121) and fixed to the ventilation frame (11).
4. A switchgear ventilation structure according to claim 1 or 2, characterized in that: The distance between the heat dissipation hole (1111) of the ventilation frame (11) and the top of the ventilation frame (11) is less than 40mm.
5. The ventilation structure for a switchgear according to claim 1, characterized in that: The heat dissipation hole (1111) is an oblong hole.