A kind of maintenance-free compressor-free environmental protection type industrial control cabinet temperature regulating device

Abstract

This invention discloses a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device, belonging to the field of industrial control cabinet temperature control. The device includes an electrical control cabinet, inside which a semiconductor chip is installed. A heat dissipation section is located at the top of the semiconductor chip, and a support is located at the bottom. When the air temperature inside the cabinet decreases or approaches the dew point temperature, the bimetallic spring deforms, pulling the rotating ring and upper adjusting plate to rotate. This increases the overlapping area of ​​the through holes on the upper and lower adjusting plates, thereby increasing the cross-sectional area for airflow and increasing the flow rate of hot air towards the heat-absorbing fins. This maintains the temperature of the heat-absorbing fins above the dew point temperature, preventing condensation from excessive cooling of the fins. Combined with the limiting and tripping mechanisms of the limiting components and guide parts, basic heat dissipation is preserved, and severe condensation caused by effectively closing the air vents is prevented.

Description

Technical Field

[0001] This invention relates to the field of industrial control cabinet temperature control technology, and in particular to a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device. Background Technology

[0002] During operation, the internal electrical components of industrial control cabinets generate a lot of heat, requiring a temperature control device to ensure the normal working environment of the components. In order to overcome the shortcomings of traditional compressor refrigeration equipment, such as large size, high maintenance cost and environmental non-environmental protection, compressor-free environmentally friendly temperature control devices based on semiconductor refrigeration technology are widely used. They usually have semiconductor plates and heat dissipation fins installed on the outer wall of the control cabinet, and are used in conjunction with a fan to form convection circulation to reduce the temperature inside the cabinet.

[0003] However, in actual operation, when the temperature inside the cabinet drops to near the dew point, water vapor in the air easily condenses on the fin surface, producing condensate. Existing devices lack the ability to treat the condensate on the heat-absorbing fins. If condensate is produced, the condensate adhering to the fin surface is easily dripped directly by gravity or fan wind, or splashed onto sensitive electrical components and wiring inside the control cabinet below. This can easily cause serious electrical safety hazards such as short circuits and component corrosion, making it difficult to ensure the long-term stable and safe operation of the control cabinet. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art mentioned above, and to propose a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device includes an electrical control cabinet. The electrical control cabinet has a semiconductor chip inside. The top of the semiconductor chip has a heat dissipation part. The bottom of the semiconductor chip has a support. The support has heat absorption fins installed inside. The bottom of the support has a fan device installed. The bracket is equipped with a wind speed adjustment component inside, and a bimetallic spring is installed at the top of the bracket. The bottom of the heat-absorbing fins is provided with a collection component, and the front end of the collection component is provided with a hollow thin plate.

[0006] Preferably, the bottom of the electrical control cabinet is provided with a control cabinet body, the heat dissipation part is installed at the bottom of the electrical control cabinet, the heat dissipation part is attached to the top of the control cabinet body, the bracket is set inside the control cabinet body, the bottom of the bracket is provided with a ventilation opening, and the fan device is coaxially set below the ventilation opening.

[0007] Preferably, the wind speed adjustment assembly includes a lower adjustment plate and an upper adjustment plate. The lower adjustment plate is fixedly installed at the ventilation opening at the bottom of the bracket. A rotating ring is coaxially rotatably provided at the top of the fan device. The upper adjustment plate is fixedly installed on the surface of the rotating ring. The lower adjustment plate is rotatably connected to the surface of the rotating ring. The lower adjustment plate and the upper adjustment plate are in contact with each other. Corresponding through holes are formed on the surfaces of the lower adjustment plate and the upper adjustment plate.

[0008] Preferably, a fixing rod is fixedly installed at the top of the fan device. The fixing rod is configured as an inverted L-shape, with the top of the fixing rod extending towards the edge of the upward adjustment plate. A bimetallic spring is installed at the bottom of the fixing rod. The bimetallic spring is configured as a spiral type, and the other end of the bimetallic spring is fixedly connected to the surface of the rotating ring.

[0009] Preferably, the top of the lower adjusting plate has a groove, and a limiting component is installed inside the groove. The bottom of the upper adjusting plate has a slot, and a guide part is provided at the edge of the slot. The limiting component is adapted to be engaged inside the slot.

[0010] Preferably, the limiting component is a combination of a spring and a locking block, with the bottom end of the spring connected to the bottom wall of the groove, and the locking block adapted to be disposed inside the groove. The groove is arc-shaped, and the guide is disposed on the side of the groove away from the locking component, so that the limiting component can disengage from the groove through the guide.

[0011] Preferably, the collection assembly includes a collection trough installed at the bottom of the heat-absorbing fins, and several sets of collection troughs are arranged at equal intervals. The inner wall of the collection trough is provided with a serrated slope. A connecting pipe is installed on the end face of the collection trough. A guide groove is opened at the bottom end of the collection trough. The connecting pipe and the collection trough are connected through the guide groove. The height of the collection trough gradually decreases towards the connecting pipe.

[0012] Preferably, a hollow thin plate is installed at the front end of the control cabinet body, and a drain pipe is provided at the bottom end of the hollow thin plate. The front end of the connecting pipe passes through the control cabinet body and extends into the interior of the hollow thin plate.

[0013] Preferably, a blocking block is installed at one end of the connecting pipe near the control cabinet body, and a drip outlet is opened at the bottom of the connecting pipe near the blocking block. The part of the connecting pipe with the drip outlet is located inside the hollow thin plate.

[0014] Preferably, a cooling fan is installed on the rear side of the bottom of the electrical control cabinet, and the cooling fan is located on the rear side of the heat dissipation part.

[0015] Compared with the prior art, the present invention provides a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device, which has the following beneficial effects: 1. This maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device, when the air temperature inside the cabinet drops or approaches the dew point temperature, the bimetallic spring deforms and pulls the rotating ring and upper adjusting plate to rotate, increasing the overlapping area of ​​the through holes of the upper and lower adjusting plates to increase the airflow cross-sectional area, thereby increasing the flow of hot air blown towards the heat-absorbing fins and maintaining the temperature of the heat-absorbing fins above the dew point temperature. This prevents the heat-absorbing fins from condensing due to excessive cooling from the source. Combined with the limiting and tripping mechanism of the limiting components and guide parts, it not only retains the minimum airflow area required for basic heat dissipation and eliminates severe condensation caused by effectively closing the air vents, but also avoids structural jamming caused by excessive force, greatly improving the operational stability of the device.

[0016] 2. This maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device can effectively buffer dripping water droplets and guide water flow when condensation occurs under extreme working conditions. This prevents condensation from splashing outward onto sensitive electrical components and lines below. Through the gradually decreasing height of the collection tank and connecting pipe, the condensation can be smoothly guided into the hollow thin plate, effectively eliminating electrical safety hazards such as short circuits and component corrosion.

[0017] 3. This maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device utilizes a hollow thin plate at the front of the control cabinet body, through which condensate water flows, and a high thermal conductivity thin-wall structure on the side that adheres to the cabinet wall. This allows for the reuse of condensate cooling energy. As the lower-temperature condensate flows and discharges within the hollow thin plate, it rapidly absorbs heat from the outer wall of the control cabinet body through the high thermal conductivity side wall, providing efficient auxiliary water cooling to the control cabinet surface and significantly improving overall heat dissipation efficiency. Combined with the semiconductor plate at the top of the control cabinet, this synergistically enhances heat conduction, achieving compressor-free, maintenance-free, and environmentally friendly industrial temperature control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention; Figure 2 This is a bottom view of the internal structure of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention. Figure 3 This is a schematic diagram of the surface structure of the control cabinet body of the maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention. Figure 4 This is a schematic diagram of the semiconductor chip mounting structure of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention; Figure 5 This is a schematic diagram of the bottom structure of the support frame for a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention. Figure 6 This is a schematic diagram of the disassembled structure of the lower and upper adjustment plates of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention. Figure 7 This is a schematic diagram of the bottom structure of the upper adjustment plate of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention; Figure 8 This is a schematic diagram of the heat-absorbing fin structure of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention. Figure 9 This is a schematic diagram of the collection tank structure of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention; Figure 10 This is a schematic diagram of the structure of the collection tank and connecting pipe connection of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention; Figure 11 This is a schematic diagram of the hollow thin plate structure of a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device proposed in this invention. Figure 12 This invention proposes a maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device. Figure 11 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Electrical control cabinet; 2. Control cabinet body; 3. Semiconductor chip; 31. Heat dissipation section; 32. Support; 33. Heat absorption fins; 34. Fan assembly; 41. Rotating ring; 42. Lower adjustment plate; 43. Groove; 44. Limiting component; 45. Upper adjustment plate; 46. Fixing rod; 47. Bimetallic spring; 48. Slot; 49. Guide section; 5. Collection tank; 51. Serrated ramp; 52. Guide groove; 53. Connecting pipe; 54. Drip outlet; 55. Block; 56. Hollow thin plate; 57. Drain pipe; 6. Cooling fan. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Reference Figures 1-12 A maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device includes an electrical control cabinet 1. Inside the electrical control cabinet 1 is a semiconductor chip 3. A heat dissipation section 31 is located at the top of the semiconductor chip 3, and a support 32 is located at the bottom of the semiconductor chip 3. Heat-absorbing fins 33 are installed inside the support 32, and a fan device 34 is installed at the bottom of the support 32. A fan speed adjustment component is located inside the support 32, and a bimetallic spring 47 is installed at the top of the support 32. A collection component is located at the bottom of the heat-absorbing fins 33. A hollow thin plate 56 is provided at the front end, and a cooling fan 6 is installed on the rear side of the bottom of the electrical control cabinet 1. The cooling fan 6 is located on the rear side of the heat dissipation part 31. When the semiconductor chip 3 is powered on, a temperature difference is formed based on the semiconductor cooling effect. Its cold end is in thermal conduction connection with the bracket 32 ​​and the heat absorption fins 33, and its hot end is in close contact with the heat dissipation part 31 for conduction. The cooling fan 6 is arranged facing the rear side of the heat dissipation part 31 to quickly blow away the heat accumulated in the heat dissipation part 31 to ensure continuous and efficient cooling of the cold end of the semiconductor chip 3.

[0023] In actual use, in order to ensure heat dissipation efficiency, a storage slot that matches the size of the semiconductor chip 3 can be opened at the top of the control cabinet body 2. The semiconductor chip 3 is then snapped into place at the top of the control cabinet body 2, and the edges are sealed to achieve better heat conduction efficiency.

[0024] Reference Figures 2-4 The bottom of the electrical control cabinet 1 is provided with the control cabinet body 2. The heat dissipation part 31 is installed at the bottom of the electrical control cabinet 1 and is attached to the top of the control cabinet body 2. The bracket 32 ​​is set inside the control cabinet body 2. The bottom of the bracket 32 ​​is provided with a ventilation opening. The fan device 34 is coaxially set below the ventilation opening.

[0025] Specifically, the fan device 34 is used to draw the high-temperature air inside the control cabinet body 2 from bottom to top and through the ventilation port, so that the hot air flows upward through the heat-absorbing fins 33 with a lower surface temperature for sufficient heat exchange. The cooled air then flows back into the control cabinet body 2 to form a cooling cycle.

[0026] Reference Figures 5-7The wind speed adjustment assembly includes a lower adjustment plate 42 and an upper adjustment plate 45. The lower adjustment plate 42 is fixedly installed at the ventilation opening at the bottom of the bracket 32. A rotating ring 41 is coaxially rotatably installed at the top of the fan device 34. The upper adjustment plate 45 is fixedly installed on the surface of the rotating ring 41. The lower adjustment plate 42 is rotatably connected to the surface of the rotating ring 41. The lower adjustment plate 42 and the upper adjustment plate 45 are in contact. Corresponding through holes are opened on the surfaces of the lower adjustment plate 42 and the upper adjustment plate 45. When the rotating ring 41 drives the upper adjustment plate 45 to slide and rotate relative to the fixedly installed lower adjustment plate 42, the overlapping area of ​​the corresponding through holes on the surfaces of the two changes accordingly, thereby realizing the dynamic adjustment of the effective air passage cross-sectional area of ​​the ventilation opening.

[0027] A fixing rod 46 is fixedly installed at the top of the fan device 34. The fixing rod 46 is set in an inverted L shape. The top of the fixing rod 46 extends towards the edge of the upward adjustment plate 45. A bimetallic spring 47 is installed at the bottom of the fixing rod 46. The bimetallic spring 47 is set in a spiral type. The other end of the bimetallic spring 47 is fixedly connected to the surface of the rotating ring 41.

[0028] The bimetallic spring 47, as a temperature sensing and driving component, undergoes torsional deformation when the air temperature flowing through the bracket 32 ​​decreases or approaches the dew point temperature. This causes the rotating ring 41 to rotate, thereby driving the upper adjusting plate 45 to rotate. This increases the overlapping area of ​​the through holes on the upper adjusting plate 45 and the lower adjusting plate 42 until the through holes on their surfaces completely overlap. This increases the flow rate of hot air blown by the fan device 34 onto the heat-absorbing fins 33, maintaining the current temperature of the heat-absorbing fins 33 above the dew point temperature and preventing condensation from forming on the heat-absorbing fins 33 due to excessively low temperatures.

[0029] The lower adjusting plate 42 has a groove 43 at its top, and a limiting component 44 is installed inside the groove 43. The upper adjusting plate 45 has a slot 48 at its bottom, and a guide part 49 is provided at the edge of the slot 48. The limiting component 44 is adapted to be engaged inside the slot 48. The limiting component 44 is a combination of a spring and a locking block. The bottom end of the spring is connected to the bottom wall of the groove 43, and the locking block is adapted to be disposed inside the groove 43. The slot 48 is arc-shaped, and the guide part 49 is located on the side of the slot 48 away from the locking limiting component 44, so that the limiting component 44 can be disengaged from the slot 48 through the guide part 49.

[0030] Specifically, when the upper adjusting plate 45 rotates to the limit position corresponding to the minimum air passage cross-sectional area, the locking block is restricted by the edge of the slot 48 away from the guide part 49 and cannot continue to rotate, thereby locking the maximum rotation angle of the upper adjusting plate 45, ensuring that the minimum air passage cross-sectional area is maintained between the upper adjusting plate 45 and the lower adjusting plate 42, ensuring basic heat dissipation while preventing the vent from being completely closed, and preventing the heat absorption fins 33 from rapidly cooling down and condensing due to lack of hot air supply; when the force is too great, the locking block can smoothly disengage from the slot 48 along the guide part 49 to avoid mechanical structure jamming and damage.

[0031] Reference Figures 8-12 The collection assembly includes a collection trough 5 installed at the bottom of the heat-absorbing fins 33. Several sets of collection troughs 5 are arranged at equal intervals. The inner wall of the collection trough 5 is provided with a serrated ramp 51. The serrated ramp 51 is arranged in a buffer structure on the inner wall of the collection trough 5 to buffer the dripping condensate and guide the water flow to prevent water droplets from splashing. A connecting pipe 53 is installed on the end face of the collection trough 5. A guide groove 52 is opened at the bottom end of the collection trough 5. The connecting pipe 53 and the collection trough 5 are connected through the guide groove 52. The height of the collection trough 5 towards the connecting pipe 53 gradually decreases. As the height of the collection trough 5 towards the connecting pipe 53 gradually decreases, the condensate can flow down with gravity and smoothly flow into the connecting pipe 53 through the guide groove 52 at the bottom end.

[0032] A hollow thin plate 56 is installed at the front end of the control cabinet body 2. A drain pipe 57 is opened at the bottom end of the hollow thin plate 56. The front end of the connecting pipe 53 extends through the control cabinet body 2 into the interior of the hollow thin plate 56. A block 55 is installed at the end of the connecting pipe 53 near the control cabinet body 2. A drip outlet 54 is opened at the bottom of the connecting pipe 53 near the block 55. The part of the connecting pipe 53 with the drip outlet 54 is located inside the hollow thin plate 56. Specifically, the end of the hollow thin plate 56 near the control cabinet body 2 is made of a low-thickness aluminum alloy plate, so that the lower temperature condensate entering its interior absorbs the heat of the outer wall of the control cabinet body 2 during the downward flow, thereby cooling the water of the outer wall of the control cabinet body 2. Finally, the flowing condensate is safely discharged to the outside of the device through the drain pipe 57 at the bottom.

[0033] In this invention, during operation, the semiconductor chip 3 inside the control cabinet 1 is energized and generates a temperature difference based on the semiconductor cooling effect. The cooling energy is transferred to the support 32 at the bottom and the heat-absorbing fins 33 installed inside the support 32, while the heat generated is transferred to the heat-dissipating part 31 at the top. At this time, the fan device 34, coaxially located below the ventilation port at the bottom of the support 32, starts, drawing the high-temperature air inside the control cabinet body 2 upwards. This causes the hot air to flow through the heat-absorbing fins 33 with a lower surface temperature for sufficient heat exchange, thereby significantly reducing the air temperature. The cooled air then flows back into the control cabinet body 2 to complete the cycle of cooling. Simultaneously, the heat generated by the semiconductor chip 3 is conducted through the heat-dissipating part 31 attached to the top of the control cabinet body 2, and is quickly dissipated and discharged to the rear by the cooling fan 6 installed behind the heat-dissipating part 31. This ensures continuous and efficient cooling of the cold end of the semiconductor chip 3 and maintains the safe operating temperature inside the control cabinet body 2.

[0034] When the temperature of the air flowing through the bracket 32 ​​changes, the bimetallic spring 47 installed at the bottom of the fixed rod 46 will undergo corresponding torsional deformation according to the principle of thermal expansion and contraction. The torsional deformation of the bimetallic spring 47 will pull the rotating ring 41 fixedly connected to it, causing it to rotate coaxially at the top of the fan device 34, thereby driving the rotating ring 41 to rotate. At this time, the rotating ring 41 will drive the upper adjustment plate 45 on the surface to rotate accordingly, while the upper adjustment plate 45 slides relative to the lower adjustment plate 42 fixed to the vent. During this process, the upper adjustment plate 45 and... The overlapping area of ​​the corresponding through holes on the surface of the lower adjusting plate 42 changes, thereby automatically changing the effective cross-sectional area of ​​the vent and realizing physical throttling control of the air volume for heat exchange. Specifically, when the air temperature decreases or approaches the dew point temperature, the bimetallic spring 47 drives the upper adjusting plate 45 to rotate to increase the overlapping area of ​​the through holes, thereby increasing the flow of hot air blown by the fan device 34 to the heat-absorbing fins 33, maintaining the current temperature of the heat-absorbing fins 33 above the dew point temperature, and preventing condensation from forming on the surface of the heat-absorbing fins 33 due to excessively low temperature.

[0035] Furthermore, the limiting component 44, consisting of a spring and a locking block in the groove 43 of the lower adjusting plate 42, is adapted to and locked inside the arc-shaped slot 48 at the bottom of the upper adjusting plate 45, serving as a limit to the rotational travel. When the rotation reaches its limit, the locking block of the limiting component 44 is locked inside the slot 48 under the action of the spring force, and is restricted by the edge of the slot 48 away from the guide part 49, thus preventing further rotation. This controls the maximum rotation angle of the upper adjusting plate 45, ensuring the minimum cross-sectional area of ​​airflow between the upper adjusting plate 45 and the lower adjusting plate 42, thereby ensuring the basic heat dissipation effect and preventing the vents from being completely closed, thus avoiding the situation where the heat-absorbing fins 33 drastically cool down and condense due to the lack of hot air supply.

[0036] In actual use, condensation is still unavoidable. When condensation forms on the surface of the heat-absorbing fins 33, it will drip down under gravity into several sets of collection tanks 5 that are evenly spaced at the bottom of the heat-absorbing fins 33. When the condensation falls into the collection tanks 5, the serrated ramps 51 on the inner wall can effectively buffer the water droplets and guide the water flow to prevent water droplets from splashing. Then, the condensation flows down the collection tanks 5 towards the connecting pipe 53 at a gradually decreasing height and flows smoothly into the connecting pipe 53 through the guide grooves 52 at the bottom. The condensate entering the connecting pipe 53 flows forward through the control cabinet body 2. Since the end of the connecting pipe 53 is equipped with a block 55, the water flow is obstructed and will drip accurately into the hollow thin plate 56 at the front end through the drip nozzle 54 opened at the bottom of the side of the block 55. Since the thickness of the hollow thin plate 56 is small and the temperature of the condensate flowing inside it is low, the condensate can cool the outer wall of the control cabinet body 2. The flowing condensate continues to flow downward until it is safely discharged from the outside of the device through the drain pipe 57.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device, comprising an electrical control cabinet (1), characterized in that, The electrical control cabinet (1) is equipped with a semiconductor chip (3), a heat dissipation part (31) is provided at the top of the semiconductor chip (3), a support (32) is provided at the bottom of the semiconductor chip (3), heat absorption fins (33) are installed inside the support (32), and a fan device (34) is installed at the bottom of the support (32). The bracket (32) is equipped with a wind speed adjustment component inside, and a bimetallic spring (47) is installed at the top of the bracket (32). The bottom of the heat-absorbing fin (33) is provided with a collection component, and the front end of the collection component is provided with a hollow thin plate (56).

2. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 1, characterized in that, The bottom of the electrical control cabinet (1) is provided with a control cabinet body (2), the heat dissipation part (31) is installed at the bottom of the electrical control cabinet (1), the heat dissipation part (31) is attached to the top of the control cabinet body (2), the bracket (32) is set inside the control cabinet body (2), the bottom of the bracket (32) is provided with a ventilation opening, and the fan device (34) is coaxially set below the ventilation opening.

3. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 1, characterized in that, The wind speed adjustment assembly includes a lower adjustment plate (42) and an upper adjustment plate (45). The lower adjustment plate (42) is fixedly installed at the ventilation opening at the bottom of the bracket (32). A rotating ring (41) is coaxially rotatably provided at the top of the fan device (34). The upper adjustment plate (45) is fixedly installed on the surface of the rotating ring (41). The lower adjustment plate (42) is rotatably connected to the surface of the rotating ring (41). The lower adjustment plate (42) and the upper adjustment plate (45) are in contact. Corresponding through holes are opened on the surfaces of the lower adjustment plate (42) and the upper adjustment plate (45).

4. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 3, characterized in that, A fixing rod (46) is fixedly installed at the top of the fan device (34). The fixing rod (46) is set in an inverted L shape. The top of the fixing rod (46) extends towards the edge of the upward adjustment plate (45). A bimetallic spring (47) is installed at the bottom of the fixing rod (46). The bimetallic spring (47) is set in a spiral type. The other end of the bimetallic spring (47) is fixedly connected to the surface of the rotating ring (41).

5. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 4, characterized in that, The lower adjustment plate (42) has a groove (43) at its top end, and a limiting component (44) is installed inside the groove (43). The upper adjustment plate (45) has a slot (48) at its bottom end, and a guide part (49) is provided at the edge of the slot (48). The limiting component (44) is adapted to be engaged inside the slot (48).

6. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 5, characterized in that, The limiting component (44) is configured as a combination of a spring and a locking block. The bottom end of the spring is connected to the bottom wall of the groove (43), and the locking block is adapted to be disposed inside the groove (43). The slot (48) is configured as an arc shape, and the guide part (49) is disposed on the side of the slot (48) away from the locking limiting component (44), so that the limiting component (44) can be disengaged from the slot (48) through the guide part (49).

7. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 1, characterized in that, The collection assembly includes a collection trough (5) installed at the bottom of the heat-absorbing fins (33). Several sets of collection troughs (5) are arranged at equal intervals. The inner wall of the collection trough (5) is provided with a serrated ramp (51). A connecting pipe (53) is installed on the end face of the collection trough (5). A guide groove (52) is opened at the bottom end of the collection trough (5). The connecting pipe (53) and the collection trough (5) are connected through the guide groove (52). The height of the collection trough (5) towards the connecting pipe (53) gradually decreases.

8. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 7, characterized in that, A hollow thin plate (56) is installed at the front end of the control cabinet body (2), and a drain pipe (57) is opened at the bottom end of the hollow thin plate (56). The front end of the connecting pipe (53) extends through the control cabinet body (2) into the interior of the hollow thin plate (56).

9. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 7, characterized in that, A block (55) is installed at one end of the connecting pipe (53) near the control cabinet body (2). A drip outlet (54) is opened at the bottom of the connecting pipe (53) near the block (55). The part of the connecting pipe (53) with the drip outlet (54) is located inside the hollow thin plate (56).

10. The maintenance-free, compressor-free, environmentally friendly industrial control cabinet temperature control device according to claim 1, characterized in that, A cooling fan (6) is installed on the rear side of the bottom of the electrical control cabinet (1), and the cooling fan (6) is located on the rear side of the heat dissipation part (31).

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