High-efficiency heat dissipation electrical cabinet

Abstract

The utility model discloses a kind of high-efficiency heat dissipation electrical cabinet, it is related to electrical cabinet heat dissipation technical field, including cabinet, the outside wall of cabinet is equipped with multiple exhaust fan, the inner wall of cabinet is equipped with U-shaped frame, U-shaped frame is located at the air vent of exhaust fan, the inside of U-shaped frame is equipped with wind guide tooth, wind guide tooth includes multiple inclined parts, wind guide tooth also includes horizontal part, inclined part and horizontal part are inclined to set, wind body is blown to electrical component in cabinet via inclined part, the wall of cabinet is equipped with air outlet for wind body to discharge, in this equipment, equipment utilizes the two different wind direction guidance of wind guide tooth to more comprehensively discharge the hot air around electrical component, heat exchange area is larger, various wind body flow mode can effectively take away the high-temperature stagnation layer on the surface of electrical component, so that component service life increases.

Description

Technical Field

[0001] This utility model relates to the field of electrical cabinet heat dissipation technology, specifically a high-efficiency heat dissipation electrical cabinet. Background Technology

[0002] In current electrical cabinet heat dissipation designs, several rectangular or circular ventilation openings are typically provided on the side walls or top of the cabinet, and axial fans are installed on the outside for forced exhaust. Since the ventilation openings and the fans are on the same plane, the airflow generated by the fans follows a basically straight trajectory within the cabinet, flowing directly from the air inlet to the air outlet.

[0003] This straight airflow path means that most of the airflow merely passes over the internal cavity of the cabinet, making it difficult to achieve sufficient contact with the densely arranged heat-generating components such as circuit breakers, contactors, and frequency converters. The small heat exchange area results in a common phenomenon of "airflow without temperature drop." The straight airflow pattern cannot effectively remove the high-temperature stagnant layer on the surface of electrical components, forming localized hot spots. Over long-term operation, this can easily lead to component aging or even thermal breakdown.

[0004] Therefore, this utility model proposes a high-efficiency heat dissipation electrical cabinet. Utility Model Content

[0005] The purpose of this utility model is to provide a high-efficiency heat dissipation electrical cabinet to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a high-efficiency heat dissipation electrical cabinet, including a cabinet body, multiple exhaust fans on the outer wall of the cabinet body, and a U-shaped frame on the inner wall of the cabinet body. The U-shaped frame is located at the ventilation opening of the exhaust fans, and air guide teeth are provided inside the U-shaped frame. The air guide teeth include multiple inclined portions and a transverse portion. The inclined portions and the transverse portion are arranged at an angle. The air blown through the inclined portions is directed towards the electrical components inside the cabinet. An air outlet is provided on the wall of the cabinet body for the air to be discharged.

[0006] Preferably, the air guide teeth also include multiple vertical sections, which are located on one side of the inclined section and are far away from the electrical components of the cabinet.

[0007] Preferably, an irregularly shaped tooth block is provided above the air guide tooth, the tooth gap of the irregularly shaped tooth block is the same as the vertical part of the air guide tooth, a fixing cylinder is provided on the side of the irregularly shaped tooth block, a fixing block is provided inside the fixing cylinder, an L-shaped rod is provided at the end of the fixing block, a sliding rod is provided on the inner wall of the L-shaped rod, an electric push rod is provided at the top of the sliding rod, and the side of the electric push rod is fixedly connected to the inner wall of the cabinet.

[0008] Preferably, the fixed cylinder is equipped with a spring inside, and the two ends of the spring are fixedly connected to the fixed block and the irregular tooth block respectively. During the downward vertical movement of the irregular tooth block, the outer end of the irregular tooth block abuts against the inclined area of ​​the transverse part.

[0009] Preferably, the bottom of the U-shaped frame is provided with a box for collecting dust.

[0010] Preferably, the inner wall of the cabinet is equipped with a control box, and the electric push rod and the exhaust fan are electrically connected to the control box.

[0011] This utility model has at least the following beneficial effects:

[0012] In this invention, guided by the air guide teeth, part of the airflow is directed obliquely towards the surface of the electrical components via the inclined section; the other part is discharged in a straight line from the vertical section. Compared to existing technologies, this device utilizes two different airflow directions guided by the air guide teeth to more comprehensively exhaust the hot air around the electrical components, resulting in a larger heat exchange area. The diverse airflow patterns effectively remove the high-temperature stagnant layer from the surface of the electrical components, extending their lifespan. Simultaneously, operators can remotely drive the electric push rod to push outwards, causing the exhaust fan to rotate in the opposite direction. This allows the irregularly shaped toothed blocks to slide downwards along their outer walls, cleaning the dust accumulated on the surface of the toothed blocks. The suction of the exhaust fan also draws the scraped dust outwards. The combined effect effectively cleans most of the dust on the air guide teeth, ensuring cleanliness of the airflow within the cabinet and facilitating routine maintenance of the electrical components. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the cabinet of this utility model;

[0015] Figure 3 This is a sectional view of the cabinet structure in this utility model;

[0016] Figure 4 This utility model Figure 3 Enlarged view of the structure of region A in the middle;

[0017] Figure 5 This is a schematic diagram of the air guide teeth and U-shaped frame structure in this utility model.

[0018] In the diagram: 1-Cabinet; 2-Exhaust fan; 3-U-shaped frame; 4-Air guide teeth; 5-Inclined part; 6-Horizontal part; 7-Vertical part; 8-Irregular toothed block; 9-Fixing cylinder; 10-Fixing block; 11-L-shaped rod; 12-Slide rod; 13-Electric push rod; 14-Spring; 15-Box body; 16-Control box. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-5 This utility model provides a technical solution: a high-efficiency heat dissipation electrical cabinet, including a cabinet body 1. Multiple exhaust fans 2 are fixedly connected to the outer wall of the cabinet body 1, providing a stable airflow source for the cabinet body 1. A U-shaped frame 3 is fixedly connected to the inner wall of the cabinet body 1, located at the ventilation opening of the exhaust fans 2. Air guide teeth 4 are slidably connected to the U-shaped frame 3, which includes multiple inclined portions 5 and a transverse portion 6. The transverse portion 6 is located at the bottom of the inclined portions 5, and the inclined portions 5 and transverse portions 6 are inclined to each other. The airflow through the inclined portions 5 blows towards the electrical components inside the cabinet body 1. An air outlet is provided on the wall of the cabinet body 1 for the airflow to exit. A replica body symmetrical to the shape of the air guide teeth 4 and the U-shaped frame 3 is provided at the air outlet to ensure that the airflow passes smoothly through the electrical cabinet.

[0021] The air guide tooth 4 also includes multiple vertical parts 7. The vertical parts 7 are located on one side of the inclined part 5 and are far away from the electrical components of the cabinet 1. The air body passing through the vertical parts 7 is a normal horizontal straight air body, which can be combined with the inclined air guiding effect of the inclined part 5 to maximize the exhaust of hot air inside the electrical cabinet to the outside and prevent local thermal aging of electrical components.

[0022] Furthermore, an irregularly shaped toothed block 8 is provided above the air guide tooth 4. The tooth gap of the irregularly shaped toothed block 8 is the same as that of the vertical part 7 of the air guide tooth 4. Therefore, the irregularly shaped toothed block 8 can slide down along the outer wall of the air guide tooth 4 in the vertical direction. A fixing cylinder 9 is provided on the side of the irregularly shaped toothed block 8 and is fixedly connected to it. A fixing block 10 is provided inside the fixing cylinder 9 and is slidably connected to it. An L-shaped rod 11 is provided at the end of the fixing block 10 and is fixedly connected to it. A sliding rod 12 is provided on the inner wall of the L-shaped rod 11 and is fixedly connected to it. An electric push rod 13 is provided at the top of the sliding rod 12 and is fixedly connected to its top. The side of the electric push rod 13 is fixedly connected to the inner wall of the cabinet 1. A control box 16 is provided on the inner wall of the cabinet 1 and is fixedly connected to it. The electric push rod 13 and the exhaust fan 2 are both electrically connected to the control box 16. The control box 16 can be remotely controlled by the staff outside the cabinet 1, which can drive the electric push rod 13 to push out or retract, and the fan blades inside the exhaust fan 2 to rotate forward and backward.

[0023] Furthermore, the fixed cylinder 9 is equipped with a spring 14 inside. The two ends of the spring 14 are fixedly connected to the fixed block 10 and the irregular tooth block 8 respectively. During the downward vertical movement of the irregular tooth block 8, the outer end of the irregular tooth block 8 abuts against the inclined area of ​​the transverse part 6. The bottom of the U-shaped frame 3 is equipped with a box 15 for collecting dust. The side of the box 15 is fixedly connected to the inner wall of the cabinet 1.

[0024] Working principle:

[0025] When the exhaust fan 2 is operating normally, part of the airflow directly enters the guide teeth 4 and is guided by the inclined part 5, blowing obliquely towards the surface of the electrical components along the inclined angle. The airflow carries the heat from the surface of the electrical components until it is discharged from the air outlet on the other side of the cabinet 1. The other part of the airflow is discharged in a straight line from the vertical part 7, blowing away some of the hot air that is farther from the electrical components, and finally being discharged from the air outlet. Compared to existing technologies, this equipment utilizes two different airflow directions guided by the guide teeth 4 to more comprehensively discharge the hot air around the electrical components. It has a larger heat exchange area, and the diverse airflow patterns can effectively remove the high-temperature stagnant layer on the surface of the electrical components, extending the service life of the components.

[0026] In addition, during routine maintenance, the electric push rod 13 can be remotely driven by the control box 16 to push out, while the exhaust fan 2 rotates in the opposite direction. At this time, the electric push rod 13 will drive the slide rod 12, L-shaped rod 11, fixing block 10 and irregular toothed block 8 to descend simultaneously, so that the irregular toothed block 8 slides down along the outer wall of the toothed block, thereby cleaning the dust remaining on the surface of the toothed block, until the outer end of the irregular toothed block 8 abuts against the inclined area of ​​the horizontal part 6. Under the action of the spring 14, the irregular toothed block 8 will be misaligned with the horizontal part 6, thereby sweeping the dust accumulated on the horizontal part 6 into the box 15 for collection. At the same time, the suction of the exhaust fan 2 will also suck the dust that has been scraped off to the outside. The two work together to effectively clean most of the dust on the air guide teeth 4, ensuring the cleanliness of the air exchange inside the cabinet 1, which is beneficial to the routine maintenance of electrical components.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency heat dissipation electrical cabinet, comprising a cabinet body (1), wherein the outer side wall of the cabinet body (1) is provided with a plurality of exhaust fans (2), characterized in that: The inner wall of the cabinet (1) is provided with a U-shaped frame (3). The U-shaped frame (3) is located at the ventilation opening of the exhaust fan (2). The interior of the U-shaped frame (3) is provided with air guide teeth (4). The air guide teeth (4) include multiple inclined parts (5) and horizontal parts (6). The inclined parts (5) and horizontal parts (6) are inclined. The air blown through the inclined parts (5) is directed to the electrical components inside the cabinet (1). The wall of the cabinet (1) is provided with an air outlet for the air to be discharged.

2. The high-efficiency heat dissipation electrical cabinet according to claim 1, characterized in that: The air guide tooth (4) also includes multiple vertical parts (7), which are located on one side of the inclined part (5) and are far away from the electrical components of the cabinet (1).

3. The high-efficiency heat dissipation electrical cabinet according to claim 2, characterized in that: A special-shaped tooth block (8) is provided above the air guide tooth (4). The tooth gap of the special-shaped tooth block (8) is the same as that of the vertical part (7) of the air guide tooth (4). A fixing cylinder (9) is provided on the side of the special-shaped tooth block (8). A fixing block (10) is provided inside the fixing cylinder (9). An L-shaped rod (11) is provided at the end of the fixing block (10). A sliding rod (12) is provided on the inner wall of the L-shaped rod (11). An electric push rod (13) is provided at the top of the sliding rod (12). The side of the electric push rod (13) is fixedly connected to the inner wall of the cabinet (1).

4. The high-efficiency heat dissipation electrical cabinet according to claim 3, characterized in that: The fixed cylinder (9) is equipped with a spring (14). The two ends of the spring (14) are fixedly connected to the fixed block (10) and the irregular tooth block (8) respectively. During the downward vertical movement of the irregular tooth block (8), the outer end of the irregular tooth block (8) abuts against the inclined area of ​​the transverse part (6).

5. The high-efficiency heat dissipation electrical cabinet according to claim 4, characterized in that: The bottom of the U-shaped frame (3) is provided with a box (15) for collecting dust.

6. The high-efficiency heat dissipation electrical cabinet according to claim 4, characterized in that: The inner wall of the cabinet (1) is equipped with a control box (16), and the electric push rod (13) and the exhaust fan (2) are electrically connected to the control box (16).

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