Electrical control cabinet cooling device and control method thereof

Abstract

The invention belongs to the technical field of electrical control cabinet cooling, and discloses an electrical control cabinet cooling device and a control method thereof.The electrical control cabinet cooling device comprises a cabinet body, a control box, a refrigeration box and the like, and a power source and a control system are arranged in the control box; the refrigeration box achieves air refrigeration circulation through an air extracting pump, a semiconductor chilling plate and the like. The cabinet body is provided with an air guide groove and connected with the air guide frame, the electric push rod adjusts the angle of the air guide piece through rack and gear transmission, and accurate air guide and heat dissipation are achieved. The temperature sensor collects temperature data of the cabinet body in real time and transmits the data to the control system, and the electric push rod is controlled to adjust the air guide blades according to temperature distribution, so that cold air flows to a high-temperature area. The electrical control cabinet effectively solves the problems of poor heat dissipation, easy dust collection and the like of a traditional heat dissipation mode, can accurately control the temperature and efficiently dissipate heat, creates a good operation environment for electrical elements in the electrical control cabinet, and improves the stability and service life of equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical control cabinet cooling, and particularly relates to an electrical control cabinet cooling device and a control method thereof. BACKGROUND

[0002] The electrical control cabinet is a cabinet made of steel for protecting the normal work of components and devices. The manufacturing materials of the electrical cabinet are generally divided into hot-rolled steel plates and cold-rolled steel plates. The cold-rolled steel plate is more flexible than the hot-rolled steel plate, and is more suitable for the manufacturing of the electrical cabinet. The electrical cabinet is widely used in the chemical industry, the environmental protection industry, the power system, the metallurgical system, the industry, the nuclear power industry, the fire safety monitoring, and the transportation industry.

[0003] At present, the traditional electrical control cabinet adopts the air-cooled window opening mode for heat dissipation. The window fan can introduce the outside air for heat dissipation, but cannot effectively filter the dust. Part of the dust will enter the inside of the electrical control cabinet. The dust accumulated on the surface and the pins of the circuit board and the electronic components will hinder the heat dissipation, further reduce the heat dissipation effect, and cause the circuit board short circuit, the electronic component pin short circuit and other faults when the environmental humidity changes, which seriously affects the normal operation and stability of the electrical control cabinet. SUMMARY

[0004] The present application aims to provide an electrical control cabinet cooling device and a control method thereof to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme. The utility model provides an electrical control cabinet cooling device, including the cabinet, the cabinet is hinged with the cabinet door, the cabinet is connected with the control box, the control box is equipped with power supply and control system, the cabinet is connected with refrigeration box, the refrigeration box is connected with the air pump, the air pump is connected with the air pipe, the cabinet is connected with the air suction pipe, the air suction pipe is connected with the air suction nozzle, the air pipe passes through the cabinet and communicates with the air suction pipe, the refrigeration box is connected with the semiconductor refrigerating sheet, the refrigeration box is connected with the heat conduction metal plate and the heat plate, the heat conduction metal plate and the heat plate are respectively with the cold end and the hot end of semiconductor refrigerating sheet and touch, the heat plate is connected with the heat dissipation fin, the refrigeration box is connected with the support, the support is connected with the fan assembly, the refrigeration box is connected with the air outlet pipe, the air outlet pipe is connected with the cabinet, the cabinet is equipped with the air guide groove, the cabinet is connected with the air guide frame, the air guide frame is rotatably connected with a plurality of groups of rotation shafts, a plurality of groups of rotation shafts are connected with the air guide piece, the rotation shaft is connected with the gear, the air guide frame is equipped with the sliding slot, the sliding slot is slidably connected with the sliding block, the sliding block is connected with the rack, the rack is engaged with the gear, the air guide frame is connected with the fixed block, the fixed block is connected with the electric push rod, the electric push rod telescopic end is connected with the rack, the cabinet is connected with the temperature sensor, power supply, air pump, semiconductor refrigerating sheet, fan assembly, temperature sensor and electric push rod all are connected with control system communication, control system, air pump, semiconductor refrigerating sheet, fan assembly, temperature sensor and electric push rod all are connected with power supply electricity.

[0006] Preferably, the cabinet door is connected with a sealing ring, which cooperates with the cabinet.

[0007] Preferably, the inner wall of the cabinet is lined with a high-thermal-conductivity aluminum alloy.

[0008] Preferably, the cabinet is connected with a plurality of groups of turbulence protrusions, which are located in the refrigeration box.

[0009] Preferably, the cabinet door is provided with a transparent observation window, which is a double-layer hollow heat insulation structure.

[0010] Preferably, the cabinet door is connected with a sliding rod, the outer side of which is sleeved with a plurality of groups of circular rings, and the plurality of groups of circular rings are collectively connected with a light curtain.

[0011] Preferably, the air guide frame is detachably connected with a mounting plate, which is connected with a dehumidification box.

[0012] Preferably, a control method for the electrical control cabinet cooling device includes the following steps: S1, real-time temperature monitoring: real-time acquisition of internal temperature data of the cabinet by a temperature sensor, and transmission of the data to a control system; S2, air extraction refrigeration control: when the temperature data received by the control system exceeds the preset threshold, the power supply is powered on for the air extraction pump, the semiconductor refrigeration sheet and the fan assembly, the air extraction pump extracts hot air in the cabinet through the air extraction pipe, the air suction pipe and the air suction nozzle to the refrigeration box, the semiconductor refrigeration sheet works, the cold end cools the air in the refrigeration box through the heat-conducting metal plate, and the hot end dissipates heat through the heat spreading plate and the heat dissipation fin, and the fan assembly accelerates the heat dissipation fin heat dissipation; S3, air guide angle adjustment: the control system controls the electric push rod to extend according to the temperature data of different regions of the cabinet collected by the temperature sensor, the electric push rod drives the rack to move, the rack drives the rotating shaft to rotate through the meshing with the gear, and then the angle of the air guide sheet is adjusted, so that the cold air flow of the refrigeration box sent into the cabinet through the air outlet pipe flows to the region with higher temperature.

[0013] Compared with the prior art, the technical scheme has the following beneficial effects: (1) The technical scheme sets the temperature sensor to monitor the temperature of the cabinet in real time, provides data support for the control system, so that it can make accurate decisions; the air extraction system composed of the air extraction pump, the air extraction pipe, the air suction pipe and the air suction nozzle can quickly extract hot air in the cabinet, and after being cooled by the semiconductor refrigeration sheet, the hot air is sent back to the cabinet through the air outlet pipe, effectively reducing the internal temperature; the heat-conducting metal plate, the heat spreading plate and the heat dissipation fin cooperate with the fan assembly to accelerate the heat dissipation of the hot end of the semiconductor refrigeration sheet, ensuring the refrigeration efficiency; the electric push rod drives the air guide sheet to rotate through the rack and gear transmission structure, realizing directional delivery of cold air and accurate cooling of high-temperature regions; the connection of each component with the control system and the power supply ensures that the device operates as needed, not only solves the problem of dust accumulation in the traditional air-cooled window heat dissipation, but also improves the heat dissipation efficiency, avoids short circuit failure caused by dust, prolongs the service life of the electrical control cabinet, reduces the maintenance cost, and reduces the economic loss of the user.

[0014] (2) By setting the sealing ring, the dust, moisture and corrosive gas outside can be prevented from entering the cabinet, so as to avoid short circuit failure caused by dust accumulation on the surface of the circuit board and electronic components, prevent moisture from causing damage to the components, and prevent corrosive gas from accelerating the aging of the components, so as to create a clean, dry and stable operating environment for the internal electrical components. At the same time, good sealing helps to maintain stable air flow in the cabinet, improve cooling efficiency and reduce the interference of the external environment on the temperature control in the cabinet.

[0015] (3) By setting the high-thermal-conductivity aluminum alloy lining plate, the heat generated by the electrical components can be quickly conducted to the surface of the cabinet, reducing the impact of local high temperature on the components, increasing the heat dissipation area, and cooperating with the air flow extracted by the air extraction pump to more efficiently carry away heat and strengthen the heat dissipation effect.

[0016] (4) By setting the spoiler, the laminar flow state of the air flow in the refrigeration box can be destroyed, the contact of hot air with the cold end of the semiconductor refrigeration piece and the heat-conducting metal plate is more sufficient, the residence time of the air flow in the refrigeration box is prolonged, and the heat exchange effect is enhanced. At the same time, the turbulent airflow can drive the uniform diffusion of cold, avoiding the temperature stratification phenomenon in the refrigeration box, and ensuring that the cold air temperature sent into the cabinet through the air outlet pipe is balanced.

[0017] (5) By setting the transparent observation window with double-layer hollow heat insulation structure, the operating state of the electrical components in the cabinet, the indicator light signal and the like can be directly observed by the operator without opening the cabinet door, which is beneficial to timely discovery of abnormalities. The double-layer hollow heat insulation structure can effectively block the conduction of external heat, reduce the influence of the external high temperature environment on the internal temperature of the cabinet, reduce the working load of the refrigeration system, improve the energy efficiency of the cooling device, prevent the loss of cold air in the cabinet, and maintain a constant temperature environment.

[0018] (6) By setting the light-shielding curtain, the direct sunlight can be blocked, the internal temperature of the cabinet can be prevented from rising due to illumination, the operating load of the cooling device can be reduced, and the heat dissipation efficiency can be improved; at the same time, the ultraviolet radiation on the internal electrical components can be reduced, the component aging can be delayed, and the service life can be prolonged. Moreover, the light-shielding curtain can be flexibly opened and closed, and when it is necessary to observe the internal situation, it can be slidably retracted, without affecting the observation of the internal state through the transparent observation window.

[0019] (7) By setting the dehumidification box, the humidity in the cabinet can be continuously adsorbed, and problems such as circuit board short circuit and electronic component damage caused by high humidity can be effectively prevented. Cooperate with the overall cooling system to create a dry and stable operating environment for electrical components. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic diagram provided by the present application is shown in the figure; Figure 2 The front view of the present application is shown in the figure; Figure 3 The front view of the present application is shown in the figure; Figure 4 The front view of the present application is shown in the figure; Figure 3 The enlarged view of A in the figure; Figure 5 The side view of the present application is shown in the figure; Figure 6 The side view of the present application is shown in the figure; The drawings are marked: cabinet door 1, sealing ring 2, cabinet 3, air outlet pipe 4, heat dissipation fin 5, fan assembly 6, bracket 7, control box 8, refrigeration box 9, transparent observation window 10, light curtain 11, circular ring 12, slide rod 13, control system 14, power supply 15, temperature sensor 16, air suction pipe 17, air suction nozzle 18, high thermal conductivity aluminum alloy lining plate 19, air guide frame 20, mounting plate 21, rotating shaft 22, gear 23, rack 24, sliding groove 25, sliding block 26, air guide piece 27, air suction pipe 28, air suction pump 29, heat conducting metal plate 30, semiconductor refrigeration piece 31, heat spreading plate 32, turbulence protrusion 33, air guide groove 34, dehumidification box 35, fixing block 36, electric push rod 37. DETAILED DESCRIPTION

[0021] The application will be further described in detail below in combination with the drawings and embodiments: As Figures 1-6 The electrical control cabinet cooling device shown in the drawings comprises a cabinet 3 for accommodating electrical components, and a high thermal conductivity aluminum alloy lining plate 19 is laid on the inner wall of the cabinet 3. The high thermal conductivity aluminum alloy lining plate 19 rapidly conducts heat to the surface of the lining plate by virtue of excellent heat conduction performance, increases the heat dissipation area, and enables heat to spread to the surrounding air more quickly to complete the preliminary dissipation of heat. The front side of the cabinet 3 is hingedly connected with a cabinet door 1, the inner side of the cabinet door 1 is connected with a sealing ring 2, and the sealing ring 2 cooperates with the cabinet 3. The cabinet door 1 is provided with a transparent observation window 10, and the transparent observation window 10 is a double-layer hollow heat insulation structure. The outer side of the cabinet door 1 is connected with two groups of slide rods 13, and the two groups of slide rods 13 are respectively located on the upper and lower sides of the transparent observation window 10. A plurality of groups of circular rings 12 are sleeved on the outer side of the slide rod 13, and the plurality of groups of circular rings 12 on the upper and lower sides are jointly connected with a light curtain 11.

[0022] As Figures 2-4As shown, the cabinet 3 side wall is connected with the control box 8, the control box 8 is provided with the power supply 15 and the control system 14, the power supply 15 provides power support for the whole device, and the control system 14 is used for controlling the operation of each part to realize intelligent management. The rear wall of the cabinet 3 is connected with the refrigeration box 9, the bottom wall of the refrigeration box 9 is connected with the air suction pump 29, the air suction end of the air suction pump 29 is connected with the air suction pipe 28, the inner rear wall of the cabinet 3 is connected with the air suction pipe 17, the air suction pipe 17 is connected with a plurality of air suction nozzles 18, and the air suction pipe 28 penetrates through the rear wall of the cabinet 3 and communicates with the air suction pipe 17. The rear wall of the refrigeration box 9 is connected with a plurality of groups of semiconductor refrigeration pieces 31 arranged in an array, and the inner side and the outer side of the rear wall of the refrigeration box 9 are respectively connected with the heat-conducting metal plate 30 and the heat spreading plate 32. The heat-conducting metal plate 30 and the heat spreading plate 32 respectively abut the cold end and the hot end of the plurality of groups of semiconductor refrigeration pieces 31. The rear wall of the heat spreading plate 32 is connected with the heat dissipation fin 5, the rear wall of the refrigeration box 9 is connected with the bracket 7, the bracket 7 is connected with the fan assembly 6, and the fan assembly 6 is located directly behind the heat dissipation fin 5. The rear wall of the cabinet 3 is connected with a plurality of groups of turbulence protrusions 33 of different sizes, the turbulence protrusions 33 are located in the refrigeration box 9, can disturb the flow trajectory of hot air in the refrigeration box 9, and break the laminar flow state. The top wall of the refrigeration box 9 is connected with the air outlet pipe 4, the air outlet pipe 4 is connected with the top wall of the cabinet 3, the inner top wall of the cabinet 3 is provided with the air guide groove 34, and the air outlet pipe 4 communicates with the air guide groove 34. The top wall of the cabinet 3 is connected with the air guide frame 20, and the air guide groove 34 is located in the air guide frame 20. A plurality of groups of rotating shafts 22 are rotatably connected to the left and right side walls of the air guide frame 20, the rotating shafts 22 are connected with the air guide fins 27, the rotating shafts 22 located outside the air guide frame 20 are connected with the gears 23, the outer side wall of the air guide frame 20 is provided with the sliding groove 25, the sliding groove 25 is slidingly connected with the sliding block 26, and the longitudinal section of the sliding groove 25 and the sliding block 26 is T-shaped. The sliding block 26 is connected with the rack 24, the rack 24 is engaged with the plurality of groups of gears 23. The outer side wall of the air guide frame 20 is connected with the fixed block 36, the fixed block 36 is connected with the electric push rod 37, and the telescopic end of the electric push rod 37 is connected with the end of the rack 24. The front wall of the air guide frame 20 is detachably connected with the mounting plate 21, the mounting plate 21 is connected with the dehumidification box 35, and the dehumidification box 35 can be placed with a dehumidifier. The inner side wall of the cabinet 3 is connected with a plurality of groups of temperature sensors 16, and the plurality of groups of temperature sensors 16 are located at different positions in the cabinet 3. The power supply 15, the air suction pump 29, the semiconductor refrigeration pieces 31, the fan assembly 6, the temperature sensors 16 and the electric push rod 37 are in communication connection with the control system 14, and the control system 14, the air suction pump 29, the semiconductor refrigeration pieces 31, the fan assembly 6, the temperature sensors 16 and the electric push rod 37 are in electrical connection with the power supply 15.

[0023] The control method of the electrical control cabinet cooling device comprises the following steps: S1, real-time temperature monitoring: the temperature sensor 16 collects the internal temperature data of the cabinet 3 in real time, and transmits the data to the control system 14, thereby providing accurate basis for subsequent heat dissipation control.

[0024] S2. Air Extraction and Cooling Control: When the temperature data received by the control system 14 exceeds the preset threshold, the control power supply 15 supplies power to the air extraction pump 29, the thermoelectric cooler 31, and the fan assembly 6. The air extraction pump 29 starts, drawing hot air from inside the cabinet 3 into the cooling box 9 through the suction nozzle 18 and suction pipe 17. The thermoelectric cooler 31 connected to the rear wall of the cooling box 9 begins to work. Based on the Peltier effect, the cold end of the thermoelectric cooler 31 absorbs heat, and the hot end releases heat. The cold end makes full contact with the air inside the cooling box 9 through the heat-conducting metal plate 30, cooling the air; the heat from the hot end is conducted to the heat spreader 32. The heat spreader 32 distributes the heat evenly and increases the heat dissipation area with the help of the heat dissipation fins 5. At the same time, the fan assembly 6 operates, accelerating the airflow and quickly dissipating the heat to the external environment, ensuring the continuous and stable operation of the thermoelectric cooler 31 and realizing the cooling treatment of the extracted air.

[0025] S3. Airflow Angle Adjustment: The control system 14 controls the extension and retraction of the electric push rod 37 based on the temperature data of different areas of the cabinet 3 collected by the temperature sensor 16. The electric push rod 37 pushes the rack 24, causing the slider 26 to slide in the slide groove 25. Since the rack 24 meshes with the gear 23, it drives the rotating shaft 22 to rotate, causing the airflow guide vane 27 connected to the rotating shaft 22 to adjust its angle, accurately guiding the cold air to the higher temperature area, achieving precise heat dissipation and improving heat dissipation efficiency.

[0026] The specific implementation process is as follows: During use, install the electrical components inside cabinet 3, ensuring secure installation and compliance with electrical specifications. Connect the power supply 15 and control system 14 within control box 8, carefully checking the electrical connections between components to ensure correct wiring and good contact. Start the electrical control cabinet; the device enters automatic operation mode. Temperature sensor 16 collects real-time temperature data inside cabinet 3 and transmits it to control system 14. When the temperature does not exceed the preset threshold, the device is in low-power monitoring mode, maintaining only the normal operation of temperature sensor 16. Once the temperature exceeds the preset threshold, control system 14 automatically starts the air pump 29, semiconductor cooling chip 31, and fan assembly 6 to begin air extraction and cooling operations. Simultaneously, based on the temperature distribution, it controls the electric push rod 37 to adjust the angle of the air guide vanes 27 for precise heat dissipation. Regularly replace the desiccant in dehumidifier box 35 to maintain a dry environment in cabinet 3.

[0027] The above-mentioned are only embodiments of the present application, and common technical solutions and / or common knowledge of the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. An electrical control cabinet cooling device, characterized in that: The system includes a cabinet (3) with a hinged door (1), a control box (8) connected to the cabinet (3), a power supply (15) and a control system (14) inside the control box (8), a refrigeration box (9) connected to the cabinet (3), a vacuum pump (29) connected to the refrigeration box (9), a vacuum pipe (28) connected to the vacuum pump (29), a suction pipe (17) connected to the cabinet (3), a suction nozzle (18) connected to the suction pipe (17), and the vacuum pipe (28) passing through the cabinet (3) and communicating with the suction pipe (17). A cold box (9) is connected to a semiconductor cooling chip (31). The cold box (9) is connected to a heat-conducting metal plate (30) and a heat spreader (32). The heat-conducting metal plate (30) and the heat spreader (32) respectively abut against the cold end and the hot end of the semiconductor cooling chip (31). The heat spreader (32) is connected to heat dissipation fins (5). The cold box (9) is connected to a bracket (7). The bracket (7) is connected to a fan assembly (6). The cold box (9) is connected to an air outlet pipe (4). The air outlet pipe (4) is connected to a cabinet (3). The cabinet (3) has an air guide groove. (34) The cabinet (3) is connected to an air guide frame (20), the air guide frame (20) is rotatably connected to several sets of rotating shafts (22), the several sets of rotating shafts (22) are connected to air guide vanes (27), the rotating shafts (22) are connected to gears (23), the air guide frame (20) is provided with a sliding groove (25), the sliding groove (25) is slidably connected to a slider (26), the slider (26) is connected to a rack (24), the rack (24) meshes with the gear (23), the air guide frame (20) is connected to a fixing block (36), the fixing block (36) An electric push rod (37) is connected, and the telescopic end of the electric push rod (37) is connected to a rack (24). A temperature sensor (16) is connected to the cabinet (3). The power supply (15), the air pump (29), the thermoelectric cooler (31), the fan assembly (6), the temperature sensor (16) and the electric push rod (37) are all communicatively connected to the control system (14). The control system (14), the air pump (29), the thermoelectric cooler (31), the fan assembly (6), the temperature sensor (16) and the electric push rod (37) are all electrically connected to the power supply (15).

2. The temperature reducing and cooling device for an electrical control cabinet according to claim 1, characterized in that: The cabinet door (1) is connected to a sealing ring (2), which is in conjunction with the cabinet body (3).

3. An electrical control cabinet cooling device as claimed in claim 2, characterized in that: The inner wall of the cabinet (3) is lined with a high thermal conductivity aluminum alloy lining plate (19).

4. An electrical control cabinet cooling device as claimed in claim 3, characterized in that: The cabinet (3) is connected to several sets of turbulence protrusions (33), which are located inside the refrigeration box (9).

5. An electrical control cabinet cooling device as claimed in claim 4, characterized in that: The cabinet door (1) is provided with a transparent observation window (10), which is a double-layer hollow heat-insulating structure.

6. An electrical control cabinet cooling device as claimed in claim 5, characterized in that: The cabinet door (1) is connected to a sliding rod (13), and several sets of rings (12) are sleeved on the outside of the sliding rod (13). Several sets of rings (12) are connected to a blackout curtain (11).

7. An electrical control cabinet cooling device as claimed in claim 6, characterized in that: The air guide frame (20) is detachably connected to an installation plate (21), and the installation plate (21) is connected to a dehumidification box (35).

8. The control method of the electrical control cabinet cooling device according to claim 7, characterized in that, Includes the following steps: S1. Real-time temperature monitoring: The internal temperature data of the cabinet (3) is collected in real time by temperature sensor (16) and transmitted to the control system (14). S2, Air extraction and cooling control: When the temperature data received by the control system (14) exceeds the preset threshold, the control power supply (15) supplies power to the air extraction pump (29), the semiconductor cooling chip (31) and the fan assembly (6). The air extraction pump (29) works with the suction pipe (17) and the suction nozzle (18) through the air extraction pipe (28) to extract the hot air inside the cabinet (3) to the cooling box (9). The semiconductor cooling chip (31) works, and the cold end cools the air inside the cooling box (9) through the heat-conducting metal plate (30). The hot end dissipates heat through the heat dissipation plate (32) and the heat dissipation fins (5). The fan assembly (6) accelerates the heat dissipation of the heat dissipation fins (5). S3. Air guide angle adjustment: The control system (14) controls the extension and retraction of the electric push rod (37) based on the temperature data of different areas of the cabinet (3) collected by the temperature sensor (16). The electric push rod (37) drives the rack (24) to move. The rack (24) drives the rotating shaft (22) to rotate by meshing with the gear (23), thereby adjusting the angle of the air guide (27) so that the cold air sent into the cabinet (3) by the refrigeration box (9) through the air outlet pipe (4) flows to the area with higher temperature.

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