Cooling device for reducing internal temperature of electrical cabinet

Abstract

The utility model discloses a cooling device for reducing the internal temperature of an electrical cabinet, and the device comprises a cabinet body which comprises a work box disposed at the lower end of the cabinet body; the air exchange assembly is installed in the working box and comprises two impeller sets and a motor, the two impeller sets are arranged in a separated mode, the impeller set on one side is used for air inlet, and the impeller set on the other side is used for air outlet. Gas exchange in the cabinet body is achieved through the two impeller sets, one impeller set is used for feeding gas, the other impeller set is used for discharging gas, the gas flowability is high, the filter screen can filter the gas entering the cabinet body, the self-cleaning effect is achieved under the action of reverse airflow, the service life is prolonged, and the service life is prolonged. And secondly, the self-circulation of the gas is realized to a certain degree under the action of the two groups of impeller groups, and the self-circulation gas is subjected to ventilation through the ventilation port II and is certainly replaced.

Description

Technical Field

[0001] This utility model relates to the field of electrical cabinet component technology, specifically a cooling device for reducing the internal temperature of an electrical cabinet. Background Technology

[0002] Electrical cabinets are core devices used in the industrial field to protect and control electrical equipment. The components inside the electrical cabinet (such as frequency converters, circuit breakers, PLCs, etc.) generate a lot of heat during operation. Insufficient heat dissipation can lead to accelerated aging of components, false alarms or malfunctions, and safety hazards.

[0003] Based on heat dissipation principles and application scenarios, common cooling devices include natural heat dissipation, fan cooling, electrical cabinet air conditioning, and water cooling systems. Among these, fan cooling is cost-effective and easy to install in high-temperature environments, but it also has some drawbacks, such as the potential for dust introduction. In harsh environments where electrical cabinets are installed, fans are typically installed inside the cabinet, connected to the outside, and equipped with filters to remove dust and impurities. However, the dust and impurities on these filters are relatively difficult to clean, affecting their permeability. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for reducing the internal temperature of an electrical cabinet, thereby solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cooling device for reducing the internal temperature of an electrical cabinet, comprising a cabinet body, including:

[0006] The work box is installed at the bottom of the cabinet;

[0007] A ventilation assembly, installed inside the working chamber, includes two sets of impellers and a motor. The two sets of impellers are spaced apart, with one set of impellers for air intake and the other set for air exhaust. The ventilation assembly also includes:

[0008] A filter screen is located at the lower end of the two sets of impellers and connected to the motor output end. The filter screen blocks the inlet and outlet of the two sets of impellers respectively.

[0009] Furthermore, the lower end of the cabinet has two ventilation ports, which are located at the upper ends of the two sets of impellers respectively.

[0010] Furthermore, the inner wall of the work box has a slide rail, and a detachable drawer frame is installed in the slide rail. A second partition is fixed to the upper end of the drawer frame. A first partition is fixed inside the work box, and the first partition is located above the second partition, separating the two sets of impellers.

[0011] The drawer frame has a ventilation port, the two sets of impellers are located in the ventilation port, and the motor is located between the two sets of impellers and fixed to the drawer frame.

[0012] The drawer frame is fixed with a mounting bracket that supports the upper end of the ventilation port. The upper ends of the two sets of impellers each have an impeller shaft that passes through the mounting bracket and is rotatably connected to the mounting bracket. The output end of the motor is fixed with an output shaft. Both sets of impeller shafts are driven by the output shaft. The lower end of the output shaft is fixed to the filter screen.

[0013] Furthermore, the ventilation port is two connected rings.

[0014] Furthermore, the diameter of the output shaft is larger than the diameter of the impeller shaft, and the output shaft and the impeller shaft are connected by a belt drive.

[0015] Furthermore, the impellers of the two sets of impellers are opposite to each other.

[0016] Furthermore, a second ventilation port is provided on the side of the work box.

[0017] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model realizes gas exchange inside the cabinet through two sets of impellers, with one set for air inlet and one set for air outlet, resulting in strong gas flow. The filter screen can filter the gas entering the cabinet and also achieves self-cleaning under the action of reverse airflow, extending the service life and preventing the filter screen from being blocked and affecting the filtration effect. Secondly, the gas achieves a certain degree of self-circulation under the action of the two sets of impellers, and the self-circulated gas is exchanged through the second air exchange port, which also replaces the self-circulated gas. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the cabinet half-section and the working box structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the separation structure of the work box and drawer frame of this utility model;

[0022] Figure 4 This is a schematic diagram of the ventilation component structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the detachable mounting bracket structure of this utility model.

[0024] In the diagram: 1. Cabinet; 11. Ventilation port 1; 2. Work box; 21. Ventilation port 2; 22. Shelf 1; 23. Slide rail; 3. Drawer rack; 4. Shelf 2; 5. Ventilation installation port; 6. Ventilation assembly; 61. Impeller assembly; 611. Impeller shaft; 612. Belt; 62. Motor; 621. Output shaft; 63. Filter screen; 64. Mounting bracket. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-5 This utility model provides a technical solution: a cooling device for reducing the internal temperature of an electrical cabinet, comprising a cabinet body 1, characterized in that it includes:

[0027] Work box 2 is installed at the lower end of cabinet 1;

[0028] The ventilation assembly 6 is installed inside the working box 2. The ventilation assembly 6 includes two sets of impellers 61 and a motor 62. The two sets of impellers 61 are spaced apart, with one set of impellers 61 used for air intake and the other set for air exhaust. The ventilation assembly 6 also includes:

[0029] The filter screen 63 is located at the lower end of the two sets of impeller groups 61 and is connected to the output end of the motor 62. The filter screen 63 blocks the inlet and outlet of the two sets of impeller groups 61 respectively.

[0030] Specifically, the working box 2 is fixed at the lower end of the cabinet 1, and has two ventilation ports 21 on both sides that connect to the outside. When the two sets of impellers 61 are working, the airflow generated is either upward or downward, and does not directly move into the ventilation ports 21. The upward and downward airflow can create a self-balancing effect, reducing the movement of gas from the ventilation ports 21 and reducing the inward movement of impurities in the environment, and also achieving a certain degree of heat dissipation. The filter screen 63 filters the gas entering into one side of the impeller set 61. The rotation of the filter screen 63 is acted upon by the outward-facing gas from the other side of the impeller set 61, so that the gas blows away the impurities adhering to the filter screen 63. It can continuously allow air to enter and exit without interruption, and automatically achieves the function of preventing blockage.

[0031] It should be noted that when the two sets of impellers 61 generate airflow circulation, the required heat dissipation effect can be achieved. In addition, the gas in the circulation will also move outward or inward from the second air exchange port 21, generating an exchange of internal and external gases, which further improves the heat dissipation effect.

[0032] Two ventilation ports 11 are provided at the lower end of the cabinet 1. The two ventilation ports 11 are located at the upper end of the two sets of impeller groups 61, so that the ventilation components 6 are connected to the inside of the cabinet 1.

[0033] The inner wall of the work box 2 has a slide rail 23, and a detachable drawer frame 3 is installed in the slide rail 23. The drawer frame 3 is easy to disassemble, making the internal components easy to maintain. A second partition 4 is fixed at the upper end of the drawer frame 3. A first partition 22 is fixed inside the work box 2. The first partition 22 is located above the second partition 4, separating the two sets of impeller groups 61. The two sets of impeller groups 61 are spaced apart in the close distance direction. When the two sets of impeller groups 61 are working, they realize the airflow that moves inside the cabinet 1.

[0034] A ventilation port 5 is provided inside the drawer frame 3. Two sets of impellers 61 are located inside the ventilation port 5. The motor 62 is located between the two sets of impellers 61 and is fixed to the drawer frame 3.

[0035] Inside the drawer frame 3, there is a mounting bracket 64 that is fixed and supported on the upper end of the ventilation port 5. Both sets of impellers 61 have an impeller shaft 611 that passes through the mounting bracket 64 and is rotatably connected to the mounting bracket 64. The output end of the motor 62 is fixed with an output shaft 621. Both sets of impeller shafts 611 are driven by the output shaft 621. The lower end of the output shaft 621 is fixed to the filter screen 63.

[0036] Specifically, the ventilation port 5 extends from top to bottom through the drawer frame 3. Two sets of impellers 61 are located inside the ventilation port 5, driving gas to move within it. The mounting bracket 64 is fixed to the drawer frame 3 and passes over the top of the ventilation port 5, limiting the two sets of impellers 61 so that they can rotate and remain within the ventilation port 5. The output shaft 621 drives the two sets of impellers 61 to rotate, and also drives the filter screen 63 to rotate. The filter screen 63 is circular, and during rotation, it can engage with the two sets of impellers 61 at different positions, blocking dust and impurities while also generating a backflushing effect to clean the filter screen 63.

[0037] The ventilation port 5 consists of two connected rings, with two sets of impellers 61 located inside the two rings respectively. The connection point between the two rings is the installation position of the output shaft 621.

[0038] The diameter of the output shaft 621 is larger than the diameter of the impeller shaft 611. The output shaft 621 and the impeller shaft 611 are driven by a belt 612. The belt 612 drives the impeller shaft 611 to rotate. The two impeller shafts 611 rotate in the same direction, but the impellers of the two sets of impellers 61 face opposite directions. Under the driving action, air is introduced on one side and discharged on the other side. It should be noted that the transmission ratio of the output shaft 621 and the impeller shaft 611 can be adjusted according to the actual situation.

[0039] The two sets of impellers 61 have impellers facing opposite directions but rotating in the same direction, thus achieving different air intake directions.

[0040] The side of the working box 2 is provided with a second air exchange port 21. The second air exchange port 21 can make the gas move outward or inward, and exchange the gas in the working box 2 with the outside. The gas from the two sets of impeller groups 61 does not directly act on the second air exchange port 21, so that the airflow is slow when the second air exchange port 21 exchanges air, and avoids bringing in more dust and impurities from the outside.

[0041] The working principle of this utility model is as follows: When the motor 62 works, it realizes the rotation of the two sets of impellers 61 in the same direction. The two sets of impellers 61 realize air intake and exhaust, and replace the gas inside the cabinet 1. The filter screen 63 located at the lower end filters the incoming gas, and the outgoing gas back-blowing the filter screen 63 blows away the dirt remaining on the filter screen 63.

[0042] Secondly, the impeller shaft 611 and the output shaft 621 rotate at different speeds, ensuring that the two sets of impellers 61 generate gas movement and also preventing the filter screen 63 from rotating too fast and affecting stability.

[0043] 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.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooling device for reducing the internal temperature of an electrical cabinet, comprising a cabinet body (1), characterized in that, include: The work box (2) is installed at the lower end of the cabinet (1); A ventilation assembly (6) is installed inside the working box (2). The ventilation assembly (6) includes two sets of impeller groups (61) and a motor (62). The two sets of impeller groups (61) are spaced apart. One set of impeller groups (61) is used for air intake, and the other set of impeller groups (61) is used for air exhaust. The ventilation assembly (6) also includes: The filter screen (63) is located at the lower end of the two sets of impeller groups (61) and connected to the output end of the motor (62). The filter screen (63) blocks the inlet and outlet of the two sets of impeller groups (61) respectively.

2. The cooling device for reducing the internal temperature of an electrical cabinet according to claim 1, characterized in that: The lower end of the cabinet (1) has two ventilation ports (11), which are located at the upper ends of the two sets of impeller groups (61).

3. The cooling device for reducing the internal temperature of an electrical cabinet according to claim 1, characterized in that: The inner wall of the work box (2) has a slide (23), and a detachable drawer frame (3) is installed in the slide (23). A partition (4) is fixed at the upper end of the drawer frame (3). A partition (22) is fixed inside the work box (2). The partition (22) is located at the upper end of the partition (4) and separates the two sets of impeller sets (61). The drawer frame (3) has a ventilation port (5) inside, and two sets of impellers (61) are located inside the ventilation port (5). The motor (62) is located between the two sets of impellers (61) and is fixed to the drawer frame (3). The drawer frame (3) is fixed with a mounting bracket (64) that supports the upper end of the ventilation port (5). The upper ends of the two sets of impeller sets (61) each have an impeller shaft (611) that passes through the mounting bracket (64) and is rotatably connected to the mounting bracket (64). The output end of the motor (62) is fixed with an output shaft (621). Both sets of impeller shafts (611) are driven by the output shaft (621). The lower end of the output shaft (621) is fixed to the filter screen (63).

4. The cooling device for reducing the internal temperature of an electrical cabinet according to claim 3, characterized in that: The ventilation port (5) consists of two connected rings.

5. The cooling device for reducing the internal temperature of an electrical cabinet according to claim 3, characterized in that: The diameter of the output shaft (621) is larger than the diameter of the impeller shaft (611), and the output shaft (621) and the impeller shaft (611) are driven by a belt (612).

6. The cooling device for reducing the internal temperature of an electrical cabinet according to claim 3, characterized in that: The impellers of the two sets of impellers (61) are opposite.

7. The cooling device for reducing the internal temperature of an electrical cabinet according to claim 1, characterized in that: The working box (2) has a second ventilation port (21) on its side.

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