Heat dissipation structure of electrical control cabinet

Abstract

The invention relates to the technical field of electrical cabinets, and particularly discloses an electrical control cabinet heat dissipation structure which comprises a cabinet body and an air outlet formed in the cabinet body, an air inlet is formed in the top of the cabinet body, a mounting frame is fixedly connected to the top of the cabinet body, an air draft fan is rotationally connected to the mounting frame, a motor is further arranged on the mounting frame, and the air draft fan is rotationally connected to the air draft fan. The motor is used for driving the exhaust fan to rotate to exhaust air into the cabinet body; a cleaning piece is further connected to the mounting frame in a sliding mode, and the cleaning piece is in transmission connection with the motor driving shaft through an adjusting mechanism. The top of the cabinet body is provided with the mounting frame with the draft fan, and the cleaning piece is in transmission connection with the motor driving shaft, and the temperature sensor assembly is in signal connection with the adjusting mechanism, so that the cleaning piece is automatically triggered to clean the air inlet according to the temperature in the cabinet, manual shutdown operation is not needed, the air inlet is effectively prevented from being blocked, and the service life of the cabinet is prolonged. Air circulation inside and outside the cabinet and convection effect of heat dissipation air channels are guaranteed, and heat dissipation efficiency of the control cabinet is maintained.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinet technology, specifically to a heat dissipation structure for an electrical control cabinet. Background Technology

[0002] In practical applications such as industrial automation and power distribution systems, electrical control cabinets integrate core electrical components such as frequency converters, PLC controllers, and power modules. These components continuously generate heat during operation, especially in industrial workshops where multiple control cabinets are densely packed and the ambient temperature is high, causing heat to easily accumulate inside the cabinet. If the heat cannot be dissipated effectively and in a timely manner, it will lead to component performance degradation and parameter drift, and in severe cases, component burnout and control cabinet failure, thereby affecting the normal operation of the entire production system. Therefore, a heat dissipation structure is an indispensable part of electrical control cabinets.

[0003] In the existing technology, the heat dissipation method of electrical control cabinets is mainly air cooling. Most of them open the ventilation openings at the corresponding positions of the cabinet and form a convection heat dissipation unit with ordinary fans. Some equipment will add a simple temperature control switch to control the start and stop of the fan. A few will put heat dissipation fins on the surface of high heat components to assist heat conduction. For precision electrical equipment, a small air conditioner is installed in the cabinet or placed in an air-conditioning room for cooling. Some simple control cabinets do not have dedicated heat dissipation components and rely solely on the heat conduction of the cabinet material itself.

[0004] In the prior art, there is a Chinese patent with authorization announcement number CN223261114U entitled "An Electrical Control Cabinet with a Heat Dissipation Structure". The aforementioned patent discloses an electrical control cabinet with a heat dissipation structure, which relates to the field of electrical control cabinet technology. It includes an electrical control cabinet body, two hinges on the left side of the electrical control cabinet body, and a door body that is rotatably connected to the front of the electrical control cabinet body through the two hinges. Two cross-shaped slots are equally spaced at the bottom and top of the inner cavity of the electrical control cabinet body.

[0005] The aforementioned patent utilizes an exhaust fan to generate airflow and dissipate heat from the electronic components inside the electrical control cabinet, preventing damage to these components due to excessive internal temperature. Simultaneously, by grasping the handle and pulling outward, the door rotates along with the hinges, opening the electrical control cabinet. Once opened, the square frame slides outward through the cross-shaped locking block within the cross-shaped slot, allowing the exhaust fan to be removed from the cabinet's interior. This process not only dissipates heat from the electrical control cabinet but also facilitates the disassembly and replacement of the exhaust fan.

[0006] However, traditional heat dissipation structures only have simple openings for the air inlet, lacking reliable anti-clogging and monitoring mechanisms. Dust and debris in industrial environments easily adhere to and accumulate at the air inlet, leading to blockages that directly obstruct airflow between the inside and outside of the cabinet, disrupting normal convection and significantly reducing the overall heat dissipation efficiency of the control cabinet, thus exacerbating heat buildup inside. Furthermore, existing heat dissipation structures cannot provide real-time monitoring and early warning of air inlet blockages. Staff cannot detect blockages promptly, and by the time abnormal temperatures are detected, core electrical components are already operating at high temperatures, posing risks of performance degradation, parameter drift, or even burnout. Moreover, clearing blockages requires separate shutdown and manual operation, increasing maintenance workload and disrupting continuous production system operation, failing to meet the heat dissipation requirements of industrial scenarios. Summary of the Invention

[0007] The purpose of this invention is to provide a heat dissipation structure for an electrical control cabinet to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a heat dissipation structure for an electrical control cabinet, comprising a cabinet body and an air outlet on the cabinet body, an air inlet on the top of the cabinet body, a mounting bracket fixedly connected to the top of the cabinet body, an exhaust fan rotatably connected to the mounting bracket, and a motor mounted on the mounting bracket, the motor driving the exhaust fan to rotate and exhaust air into the cabinet body; a cleaning component slidably connected to the mounting bracket, the cleaning component being connected to the motor drive shaft via an adjustment mechanism; and a temperature sensor assembly being mounted at the bottom of the mounting bracket, the temperature sensor assembly being signal-connected to the adjustment mechanism.

[0009] Furthermore, the cleaning component includes cleaning brushes slidably connected to both sides of the mounting bracket, and a bidirectional lead screw is rotatably connected to the mounting bracket, with the two cleaning brushes respectively threaded to both sides of the bidirectional lead screw.

[0010] Furthermore, the adjustment mechanism includes a mounting box fixedly connected to the bottom of the mounting frame, an adjustment block slidably connected inside the mounting box, a transmission rod rotatably connected to the adjustment block, and an electric telescopic rod provided inside the mounting box for controlling the sliding of the adjustment block inside the mounting box; the transmission rod is connected to the motor drive shaft through a transmission unit.

[0011] Furthermore, the transmission unit includes a transmission gear mounted on a transmission rod, and a drive gear is also provided on the motor drive shaft, with the transmission gear meshing with the drive gear.

[0012] Furthermore, the transmission rod and the bidirectional lead screw are connected by a linkage unit; the linkage unit includes a rotating rod rotatably connected to the mounting frame, a first bevel gear is provided on the rotating rod, and a second bevel gear is provided on one end of the bidirectional lead screw, with the first bevel gear meshing with the second bevel gear.

[0013] Furthermore, a tensioning unit is also provided between the transmission rod and the rotating rod.

[0014] Furthermore, the tensioning unit includes a fixed plate fixedly connected to the mounting frame, a slider slidably connected to the fixed plate, and a support rod rotatably connected to the slider; the support rod, the rotating rod, and the transmission rod are connected by a synchronization unit.

[0015] Furthermore, a return spring is also provided between the slider and the fixed plate.

[0016] Furthermore, the mounting bracket is provided with a sliding groove, and the cleaning brush is slidably connected in the sliding groove.

[0017] Furthermore, the cleaning brush is detachably provided with bristles.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: During use, the heat dissipation structure of this electrical control cabinet, by setting a mounting bracket with an exhaust fan on the top of the cabinet, and cooperating with a cleaning component connected to the motor drive shaft and a temperature sensor assembly connected to the adjustment mechanism, enables the cleaning component to be automatically triggered to clean the air inlet according to the temperature inside the cabinet, without the need for manual shutdown operation, effectively preventing the air inlet from being blocked, ensuring air circulation inside and outside the cabinet and the convection effect of the heat dissipation duct, maintaining the heat dissipation efficiency of the control cabinet, avoiding performance degradation, parameter drift or even burnout of the core electrical components inside the cabinet due to high temperature, reducing maintenance workload, ensuring continuous operation of the production system, and meeting the heat dissipation requirements of industrial scenarios. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall top view structure provided for an embodiment of the present invention; Figure 3 This is a schematic diagram of the air inlet structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the installation method of the exhaust fan provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the cleaning component structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the transmission component structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the adjustment mechanism structure provided in an embodiment of the present invention; Figure 8 A partial top view of the synchronization component provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Cabinet; 2. Mounting bracket; 3. Air outlet; 4. Air inlet; 5. Motor; 6. Exhaust fan; 7. Mounting box; 8. Temperature sensor assembly; 9. Cleaning brush; 10. Two-way lead screw; 11. Drive gear; 12. Transmission gear; 13. Transmission rod; 14. Adjusting block; 15. Fixing plate; 16. Rotating rod; 17. First bevel gear; 18. Second bevel gear; 19. Slider; 20. Support rod; 21. Return spring; 22. Synchronization unit. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-8 The present invention provides a technical solution: a heat dissipation structure for an electrical control cabinet, including a cabinet body 1 and an air outlet 3 on the cabinet body 1. An air inlet 4 is provided on the top of the cabinet body 1. A mounting bracket 2 is fixedly connected to the top of the cabinet body 1. An exhaust fan 6 is rotatably connected to the mounting bracket 2. A motor 5 is also provided on the mounting bracket 2. The motor 5 is used to drive the exhaust fan 6 to rotate and exhaust air into the cabinet body 1. A cleaning component is also slidably connected to the mounting bracket 2. The cleaning component and the drive shaft of the motor 5 are connected through an adjustment mechanism. A temperature sensor assembly 8 is also provided at the bottom of the mounting bracket 2. The temperature sensor assembly 8 is signal connected to the adjustment mechanism.

[0024] Specifically, the heat dissipation structure of the electrical control cabinet includes an air outlet 3 in the cabinet body 1, an air inlet 4 at the top and a fixed mounting bracket 2. The motor 5 on the mounting bracket 2 drives the exhaust fan 6 to rotate, drawing air into the cabinet body 1. Cold air from the outside enters through the air inlet 4, exchanges with the hot air inside the cabinet, and is then discharged through the air outlet 3, thus achieving heat dissipation. The cleaning component on the mounting bracket 2 is driven by the motor 5 through an adjustment mechanism. The temperature sensor component 8 at the bottom of the mounting bracket 2 monitors the temperature inside the cabinet in real time and is connected to the adjustment mechanism. When the temperature is abnormal, the temperature sensor component 8 sends a signal to the adjustment mechanism, which then drives the cleaning component to operate.

[0025] During use, by installing a mounting bracket 2 with an exhaust fan 6 on the top of the cabinet 1, and cooperating with a cleaning component connected to the drive shaft of the motor 5 and a temperature sensor assembly 8 connected to the adjustment mechanism, the cleaning component is automatically triggered to clean the air inlet according to the temperature inside the cabinet. This eliminates the need for manual shutdown, effectively prevents air inlet blockage, ensures air circulation inside and outside the cabinet and the convection effect of the heat dissipation duct, maintains the heat dissipation efficiency of the control cabinet, and avoids performance degradation, parameter drift or even burnout of core electrical components inside the cabinet due to high temperature. This reduces maintenance workload, ensures continuous operation of the production system, and meets the heat dissipation requirements of industrial scenarios.

[0026] In the embodiments provided by this invention, the cleaning component includes cleaning brushes 9 slidably connected to both sides of the mounting bracket 2, and a bidirectional lead screw 10 is rotatably connected to the mounting bracket 2. The two cleaning brushes 9 are respectively threaded onto both sides of the bidirectional lead screw 10. The cleaning component consists of cleaning brushes 9 sliding on both sides of the mounting bracket 2 and the bidirectional lead screw 10 on the mounting bracket 2. When the bidirectional lead screw 10 rotates, it drives the cleaning brushes 9 on both sides to slide synchronously in opposite directions. During the sliding process, the cleaning brushes 9 clean the dust and debris from the air inlet 4, thus cleaning the air inlet 4. More specifically, during the sliding process, the cleaning brushes 9 only need to remove dust and impurities from the air inlet 4. The dust and impurities will fall with the wind to the bottom of the cabinet 1, requiring only periodic cleaning of the cabinet 1.

[0027] In the embodiments provided by the present invention, the adjustment mechanism includes a mounting box 7 fixedly connected to the bottom of the mounting frame 2. An adjustment block 14 is slidably connected inside the mounting box 7, and a transmission rod 13 is rotatably connected to the adjustment block 14. An electric telescopic rod is provided inside the mounting box 7 to control the sliding of the adjustment block 14 within the mounting box 7. The transmission rod 13 is connected to the drive shaft of the motor 5 via a transmission unit. The mounting box 7 of the adjustment mechanism is fixed to the bottom of the mounting frame 2. The electric telescopic rod inside the box controls the sliding of the adjustment block 14. The transmission rod 13 rotatably connected to the adjustment block 14 moves synchronously with the adjustment block 14. The transmission rod 13 is driven by the drive shaft of the motor 5 via a transmission unit. After the temperature sensor assembly 8 sends a signal, the electric telescopic rod adjusts the position of the adjustment block 14, thereby adjusting the transmission state between the transmission rod 13 and the drive shaft of the motor 5, realizing the action control of the cleaning component.

[0028] In the embodiments provided by the present invention, the transmission unit includes a transmission gear 12 mounted on the transmission rod 13, and a drive gear 11 is also provided on the drive shaft of the motor 5. The transmission gear 12 meshes with the drive gear 11. The transmission unit is composed of the transmission gear 12 on the transmission rod 13 and the drive gear 11 on the drive shaft of the motor 5. The transmission gear 12 meshes with the drive gear 11. While the motor 5 drives the exhaust fan 6 to rotate, the drive gear 11 drives the transmission gear 12 to rotate, thereby driving the transmission rod 13 to rotate, transmitting the power of the motor 5 to the cleaning component, and realizing the integration of power for heat dissipation and cleaning.

[0029] In the embodiments provided by the present invention, the transmission rod 13 and the bidirectional lead screw 10 are connected by a linkage unit. The linkage unit includes a rotating rod 16 rotatably connected to the mounting frame 2, a first bevel gear 17 on the rotating rod 16, and a second bevel gear 18 on one end of the bidirectional lead screw 10. The first bevel gear 17 and the second bevel gear 18 mesh. The linkage unit consists of the rotating rod 16 on the mounting frame 2, the first bevel gear 17 on the rotating rod 16, and the second bevel gear 18 at one end of the bidirectional lead screw 10. The first bevel gear 17 meshes with the second bevel gear 18. When the transmission rod 13 rotates, power is transmitted to the rotating rod 16 through the synchronization unit 22. The rotating rod 16 drives the first bevel gear 17 to rotate, and the first bevel gear 17 drives the second bevel gear 18 to rotate, thereby driving the bidirectional lead screw 10 to rotate, realizing the transmission of power from the transmission rod 13 to the cleaning component.

[0030] In the embodiments provided by the present invention, a tensioning unit is further provided between the transmission rod 13 and the rotating rod 16. The tensioning unit can adjust the tension of the power transmission between the transmission rod 13 and the rotating rod 16 according to the position change of the transmission rod 13. When the adjusting block 14 drives the transmission rod 13 to move, the tensioning unit automatically compensates for the transmission gap to ensure that the power is always transmitted stably.

[0031] In the embodiments provided by the present invention, the tensioning unit includes a fixed plate 15 fixedly connected to the mounting frame 2, a slider 19 slidably connected to the fixed plate 15, and a support rod 20 rotatably connected to the slider 19; the support rod 20, the rotating rod 16, and the transmission rod 13 are connected by a synchronization unit 22. The tensioning unit consists of a fixed plate 15 on the mounting frame 2, a slider 19 sliding on the fixed plate 15, and a support rod 20 rotating on the slider 19. The support rod 20, the rotating rod 16, and the transmission rod 13 are connected by a synchronization unit 22. When the transmission rod 13 moves, the tension of the synchronization unit 22 changes, causing the slider 19 to slide on the fixed plate 15. The support rod 20 moves with the slider 19, automatically adjusting the tension of the synchronization unit 22 to ensure stable power transmission.

[0032] In the embodiments provided by the present invention, a return spring 21 is also provided between the slider 19 and the fixed plate 15. The return spring 21 provides a preload force to the slider 19 under normal conditions, so that the support rod 20 maintains tension on the synchronization unit 22. When the transmission rod 13 moves and drives the slider 19 to slide, the slider 19 moves against the elastic force of the return spring 21. When the transmission rod 13 returns to its original position, the elastic force of the return spring 21 drives the slider 19 and the support rod 20 to return to their original positions, restoring the initial tension of the synchronization unit 22.

[0033] In the embodiments provided by the present invention, a sliding groove is provided on the mounting bracket 2, and the cleaning brush 9 is slidably connected in the sliding groove. The sliding groove provides precise guidance for the sliding of the cleaning brush 9, so that the cleaning brush 9 slides back and forth in a straight line along the sliding groove under the drive of the bidirectional lead screw 10, avoiding deviation or jamming when the cleaning brush 9 slides.

[0034] In the embodiments provided by the present invention, the cleaning brush 9 is detachably equipped with bristles. Because the bristles are detachably equipped, when the bristles become worn and heavily soiled due to long-term use, resulting in a decrease in cleaning effectiveness, the old bristles can be removed and replaced with new bristles, without needing to replace the entire cleaning brush 9.

[0035] Working principle: The motor 5 on the mounting bracket 2 at the top of the cabinet 1 drives the exhaust fan 6 to rotate, drawing in cold air from the outside into the cabinet 1. The cold air enters the cabinet 1 through the air inlet 4 and exchanges heat with the hot air generated by the electrical components. The hot air is then discharged from the air outlet 3 on the cabinet 1, achieving air cooling of the cabinet 1. The temperature sensor component 8 at the bottom of the mounting bracket 2 monitors the temperature inside the cabinet 1 in real time and transmits the signal to the control system. When the temperature inside the cabinet exceeds the preset threshold, it is determined that the air inlet 4 is blocked by dust and debris, resulting in a decrease in heat dissipation efficiency. At this time, the control system sends a command to the adjustment mechanism. The electric telescopic rod in the mounting box 7 pushes the adjustment block 14 to slide, causing the transmission gear 12 on the transmission rod 13 to mesh with the drive gear 11 on the drive shaft of the motor 5. The power of the motor 5 is transmitted to the transmission rod 13 through the drive gear 11 and the transmission gear 12. The return spring 21 in the tensioning unit pushes the slider 19 to drive the support rod 20 to adjust the synchronization unit. The tension of 22 ensures that the power of the transmission rod 13 is stably transmitted to the rotating rod 16. The first bevel gear 17 on the rotating rod 16 meshes with the second bevel gear 18 on the bidirectional lead screw 10 and drives the bidirectional lead screw 10 to rotate. The bidirectional lead screw 10 drives the cleaning brushes 9 on both sides of the mounting bracket 2 to slide synchronously in opposite directions along the slide groove, cleaning the dust and debris at the air inlet 4 and relieving the blockage problem of the air inlet 4. When the temperature sensor assembly 8 detects that the temperature inside the cabinet has returned to the normal threshold, the control system controls the electric telescopic rod to pull the adjusting block 14 to reset, the transmission gear 12 separates from the drive gear 11, the cleaning brush 9 stops cleaning, and the tensioning unit resets with the transmission rod 13 to return to the initial state. The bristles on the cleaning brush 9 are detachable and can be replaced in time according to the usage. The whole process realizes automatic triggering of the air inlet 4 cleaning operation according to the temperature inside the cabinet, without the need for manual shutdown operation, continuously ensuring the smooth heat dissipation air duct of the cabinet 1 and maintaining heat dissipation efficiency.

[0036] It should be noted that all electrical equipment involved in this application can be powered by a storage battery or an external power source, and this application is equipped with a control system for controlling the operation of the entire equipment.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure for an electrical control cabinet, comprising a cabinet body (1) and an air outlet (3) formed on the cabinet body (1), wherein an air inlet (4) is formed on the top of the cabinet body (1), characterized in that: A mounting bracket (2) is fixedly connected to the top of the cabinet (1). An exhaust fan (6) is rotatably connected to the mounting bracket (2), and a motor (5) is also provided on the mounting bracket (2). The motor (5) is used to drive the exhaust fan (6) to rotate and exhaust air into the cabinet (1). A cleaning component is also slidably connected to the mounting bracket (2), and the cleaning component is connected to the drive shaft of the motor (5) through an adjustment mechanism. Furthermore, a temperature sensor assembly (8) is provided at the bottom of the mounting bracket (2), and the temperature sensor assembly (8) is connected to the adjustment mechanism via signal.

2. The heat dissipation structure for an electrical control cabinet according to claim 1, characterized in that: The cleaning component includes cleaning brushes (9) slidably connected to both sides of the mounting bracket (2), and a bidirectional lead screw (10) is rotatably connected to the mounting bracket (2), with the two cleaning brushes (9) respectively threaded to both sides of the bidirectional lead screw (10).

3. The heat dissipation structure for an electrical control cabinet according to claim 2, characterized in that: The adjustment mechanism includes a mounting box (7) fixedly connected to the bottom of the mounting frame (2), an adjustment block (14) is slidably connected inside the mounting box (7), a transmission rod (13) is rotatably connected to the adjustment block (14), and an electric telescopic rod is provided inside the mounting box (7) to control the adjustment block (14) to slide inside the mounting box (7); the transmission rod (13) is connected to the drive shaft of the motor (5) through a transmission unit.

4. The heat dissipation structure for an electrical control cabinet according to claim 3, characterized in that: The transmission unit includes a transmission gear (12) mounted on the transmission rod (13), and a drive gear (11) is also provided on the drive shaft of the motor (5), with the transmission gear (12) meshing with the drive gear (11).

5. The heat dissipation structure for an electrical control cabinet according to claim 4, characterized in that: The transmission rod (13) and the bidirectional lead screw (10) are connected by a linkage unit; The linkage unit includes a rotating rod (16) rotatably connected to the mounting bracket (2), a first bevel gear (17) is provided on the rotating rod (16), and a second bevel gear (18) is provided on one end of the bidirectional screw (10), with the first bevel gear (17) meshing with the second bevel gear (18).

6. The heat dissipation structure for an electrical control cabinet according to claim 5, characterized in that: A tensioning unit is also provided between the transmission rod (13) and the rotating rod (16).

7. The heat dissipation structure for an electrical control cabinet according to claim 6, characterized in that: The tensioning unit includes a fixed plate (15) fixedly connected to the mounting frame (2), a slider (19) slidably connected to the fixed plate (15), and a support rod (20) rotatably connected to the slider (19). The support rod (20), rotating rod (16), and transmission rod (13) are connected by a synchronization unit (22).

8. The heat dissipation structure for an electrical control cabinet according to claim 7, characterized in that: A return spring (21) is also provided between the slider (19) and the fixed plate (15).

9. The heat dissipation structure for an electrical control cabinet according to claim 2, characterized in that: The mounting bracket (2) has a sliding groove, and the cleaning brush (9) is slidably connected in the sliding groove.

10. The heat dissipation structure for an electrical control cabinet according to claim 2, characterized in that: The cleaning brush (9) is detachably provided with bristles.

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