Humidity control device for electrical control cabinet

Abstract

The utility model discloses a humidity control device for an electrical control cabinet, the upper surface of a control cabinet body is fixedly provided with an exhaust fan, the side surface of the control cabinet body is fixedly connected with a heating box and a condensing box respectively, and the inner wall of the control cabinet body is fixedly connected with a dehumidifying box, a humidity sensor and an intelligent controller respectively. The intelligent controller controls the exhaust fan and the heating wire to be powered on to draw and heat wet air so that the wet air can be rapidly condensed, and the condensed air enters the dehumidification box through the air guide pipe and sequentially passes through the silicon dioxide dehumidification plate, the sponge dehumidification layer and the activated carbon dehumidification layer upwards to be dehumidified. Dehumidified air is discharged into the control cabinet body through the exhaust holes and the inverted beard pieces, the air humidity in the control cabinet body is greatly reduced through condensation and dehumidification operation, the situation that components in the control cabinet body are affected with damp and consequently short circuits are caused is prevented, and the safety of the control cabinet body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of control cabinets, in particular to a humidity control device for an electrical control cabinet. Background Art

[0002] An electrical control cabinet is a closed or semi-closed metal cabinet that assembles switchgear, measuring instruments, protective electrical appliances and auxiliary equipment according to electrical wiring requirements. Control cabinets play a vital role in electrical automation projects. With the development of my country's economy, power application technology is becoming more and more mature, and the application of electrical control cabinets is becoming more and more extensive.

[0003] However, in actual use of the prior art, power control cabinets are generally installed outdoors. During the rainy season, the outside air is humid, which can cause excessive humidity inside the control cabinet. Over a long period of time, it can cause internal components to get damp or cause a short circuit, resulting in safety accidents. Utility Model Content

[0004] Purpose of the utility model: To solve the problem in the prior art that power control cabinets are generally installed outdoors, and the external air is humid during the rainy season, which will cause excessive humidity inside the control cabinet, causing internal components to become damp or cause short circuits for a long time, leading to safety accidents.

[0005] To achieve the above object, the utility model provides the following technical solution: a humidity control device for an electrical control cabinet, the humidity control device comprising:

[0006] An exhaust fan, the exhaust fan is fixedly arranged on the upper surface of the control cabinet body;

[0007] A heating box and a condensing box, wherein the heating box and the condensing box are fixedly connected to the side surface of the control cabinet body, a heating wire is installed inside the heating box, and a liquid collecting box and a spiral condensing tube are fixedly connected inside the condensing box;

[0008] A dehumidification box, a humidity sensor and an intelligent controller, wherein the dehumidification box, the humidity sensor and the intelligent controller are respectively fixedly connected to the inner wall of the control cabinet body; a fixing plate is fixedly connected to the inner wall of the dehumidification box; a silicon dioxide dehumidification plate, a sponge dehumidification layer and an activated carbon dehumidification layer are respectively movably connected to the upper surface of the fixing plate; and an exhaust hole is opened on the side surface of the dehumidification box.

[0009] Furthermore, a shell is installed on the outside of the exhaust fan, and the two ends of the exhaust fan are respectively fixedly connected with a first duct and a second duct, and the exhaust fan is respectively connected to the interior of the heating box and the control cabinet body through the first duct and the second duct.

[0010] Furthermore, the surfaces of the condensing box are fixedly connected with a liquid inlet pipe and a liquid outlet pipe, respectively, the lower side surface of the collecting box is fixedly connected with a drain pipe, the drain pipe is fixedly passed through the condensing box and extends to the outside of the condensing box, and a manual valve is fixedly installed on the side surface of the drain pipe.

[0011] Furthermore, an air duct is fixedly connected to the upper side surface of the liquid collecting tank, the interior of the air duct is respectively connected to the interior of the liquid collecting tank and the dehumidification tank, and the liquid collecting tank is connected to the interior of the heating box through a spiral condenser tube, and the spiral condenser tube is a spiral structure.

[0012] Furthermore, a long screw is fixedly connected to the upper surface of the fixing plate, and circular holes are respectively opened on the surfaces of the silica dehumidification plate, the sponge dehumidification layer and the activated carbon dehumidification layer. The long screw is movably inserted into the inner wall of the circular hole, and the upper end of the long screw is fixed by locking with a nut. The silica dehumidification plate, the sponge dehumidification layer and the activated carbon dehumidification layer are all located above the air duct.

[0013] Furthermore, a whisker inverting plate is fixedly connected to the upper side surface of the dehumidification box, the exhaust hole is located inside the whisker inverting plate, and an inspection cover is movably connected to the upper end of the dehumidification box.

[0014] Furthermore, the humidity sensor is electrically connected to the input end of the intelligent controller, the exhaust fan and the heating wire are electrically connected to the output end of the intelligent controller respectively, and the exhaust fan, the heating wire, the humidity sensor and the intelligent controller are electrically connected to the power supply end of the control cabinet body respectively.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When the humidity is too high, the intelligent controller of the utility model intelligently controls the exhaust fan and the heating wire to energize and heat the wet air so that it can be quickly condensed. The condensed air enters the dehumidification box through the air duct, and passes through the silica dehumidification plate, the sponge dehumidification layer and the activated carbon dehumidification layer in turn for dehumidification. The dehumidified air is discharged to the inside of the control cabinet body through the exhaust hole and the inverted whisker sheet. The air humidity inside the control cabinet body is greatly reduced through condensation and dehumidification operations, which prevents the components inside the control cabinet body from being damp and causing short circuits, thereby improving the safety of the control cabinet body.

[0017] 2. The utility model can also discharge the condensate collected in the liquid collecting box through the drain pipe to prevent the condensate from entering the dehumidification box through the air duct when too much condensate is collected. When no air is blown out of the exhaust hole, the inverted whisker piece can be kept in a closed state to prevent the uncondensed wet air in the control cabinet body from directly entering the dehumidification box through the exhaust hole, causing the dehumidification effect of the silica dehumidification plate, sponge dehumidification layer and activated carbon dehumidification layer to decrease, thereby reducing the replacement cycle of the silica dehumidification plate, sponge dehumidification layer and activated carbon dehumidification layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of a humidity control device for an electrical control cabinet of the utility model;

[0019] Figure 2 for Figure 1 A magnified view of the structure at center;

[0020] Figure 3 This is a schematic diagram of the structure of a fixing plate and a long screw rod of a humidity control device for an electrical control cabinet of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the exhaust hole structure of a humidity control device for an electrical control cabinet.

[0022] In the figure: 1. Control cabinet body; 2. Exhaust fan; 3. Heating box; 4. Heating wire; 5. Condensation box; 6. Liquid collecting box; 7. Spiral condenser; 8. Air duct; 9. Dehumidification box; 10. Inspection cover; 11. Fixing plate; 12. Long screw; 13. Silica dehumidification plate; 14. Sponge dehumidification layer; 15. Activated carbon dehumidification layer; 16. Inverted whisker; 17. Drain pipe; 18. First duct; 19. Second duct; 20. Exhaust hole; 21. Intelligent controller; 22. Humidity sensor. DETAILED DESCRIPTION

[0023] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0024] The applicant believes that in the prior art, power control cabinets are generally installed outdoors. During the rainy season, the outside air is humid, which will cause excessive humidity inside the control cabinet. Over a long period of time, it will cause internal components to get damp or cause short circuits, resulting in safety accidents.

[0025] To this end, the applicant designed Figure 1-4A humidity control device for an electrical control cabinet is shown, wherein an exhaust fan 2 is fixedly mounted on the upper surface of a control cabinet body 1, a heating box 3 and a condensing box 5 are fixedly mounted on the side surfaces of the control cabinet body 1, and a dehumidifying box 9, a humidity sensor 22 and an intelligent controller 21 are fixedly mounted on the inner wall of the control cabinet body 1. The humidity inside the control cabinet body 1 can be monitored by the humidity sensor 22, and dehumidification operation can be taken in time when the humidity is too high. The humidity sensor 22 can use an AHT20 sensor, which has the advantages of excellent long-term stability, rapid response, strong anti-interference ability, etc. A heating wire 4 is installed inside the heating box 3, and the heating wire 4 can heat the humid air to increase its temperature when it is energized. A liquid collecting box 6 and a spiral condensing tube 7 are fixedly mounted inside the condensing box 5, and the liquid collecting box 6 is connected to the inner wall of the heating box 3 through the spiral condensing tube 7. The parts are connected so that the air can enter the spiral condenser 7 after being reheated. When the air enters the spiral condenser 7, due to the large temperature difference, the water vapor in the air will condense and liquefy. The spiral condenser 7 is a spiral structure with good condensation effect. An air duct 8 is fixedly installed on the upper side surface of the liquid collecting box 6. The interior of the air duct 8 is respectively connected with the interior of the liquid collecting box 6 and the dehumidification box 9. A fixing plate 11 is fixedly installed on the inner wall of the dehumidification box 9. The upper surfaces of the fixing plate 11 are respectively movably connected with a silica dehumidification plate 13, a sponge dehumidification layer 14 and an activated carbon dehumidification layer 15. An exhaust hole 20 is provided on the side surface of the dehumidification box 9. When the condensed air enters the dehumidification box 9 through the air duct 8, it moves upward and passes through the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 in turn to perform a dehumidification operation.

[0026] Specifically, a shell is installed on the outside of the exhaust fan 2, which protects the exhaust fan 2 and prevents the exhaust fan 2 from being damaged by rain. A first duct 18 and a second duct 18 are fixedly installed at both ends of the exhaust fan 2. The exhaust fan 2 is connected to the interior of the heating box 3 and the control cabinet body 1 through the first duct 18 and the second duct 19 respectively. Starting the exhaust fan 2 can circulate the air inside the control cabinet body 1.

[0027] Specifically, a liquid inlet pipe and a liquid outlet pipe are fixedly installed on the surface of the condensation box 5, and coolant can be added to the condensation box 5 through the liquid inlet pipe, and the heated humid air is condensed in cooperation with the spiral condenser tube 7. A drain pipe 17 is fixedly installed on the lower side surface of the liquid collecting box 6. The drain pipe 17 is fixedly penetrated through the condensation box 5 and extends to the outside of the condensation box 5. A manual valve is fixedly installed on the side surface of the drain pipe 17 to control the drainage process.

[0028] Specifically, a long screw 12 is fixedly installed on the upper surface of the fixing plate 11, and circular holes are respectively opened on the surfaces of the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15. The long screw 12 is movably inserted into the inner wall of the circular hole, and the upper end of the long screw 12 is locked and fixed by a nut. By locking the upper end of the long screw 12 with a nut, the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 can be locked and fixed to prevent the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 from moving upward along the long screw 12. The silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 are all located above the air duct 8. When the air is discharged through the air duct 8 and moves upward, it can pass through the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 for dehumidification operation.

[0029] Specifically, a whisker plate 16 is fixedly installed on the upper side surface of the dehumidification box 9, and the exhaust hole 20 is located inside the whisker plate 16. When the dehumidified air is discharged through the exhaust hole 20, the whisker plate 16 is blown to open to achieve the discharge purpose. When no air is discharged from the exhaust hole 20, the whisker plate 16 can remain in a closed state. An inspection cover 10 is movably connected to the upper end of the dehumidification box 9. The inspection cover 10 can be installed with the dehumidification box 9 in a bolted manner. The inspection cover 10 is opened to replace the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 to avoid a decrease in the dehumidification effect due to long-term use.

[0030] Specifically, the humidity sensor 22 is electrically connected to the input end of the intelligent controller 21. The humidity sensor 22 can transmit the detection signal to the intelligent controller 21. The intelligent controller 21 can select a PLC controller, and can input relevant logic instructions and humidity safety thresholds. The exhaust fan 2 and the heating wire 4 are electrically connected to the output end of the intelligent controller 21 respectively. When the humidity exceeds the safety threshold, the intelligent controller 21 controls the exhaust fan 2 and the heating wire 4 to work, condense the humid air, and achieve the purpose of drying. The exhaust fan 2, the heating wire 4, the humidity sensor 22 and the intelligent controller 21 are electrically connected to the power supply end of the control cabinet body 1 respectively.

[0031] The humidity sensor 22 and the intelligent controller used in the present application are both common existing technologies in the field, so they will not be described in detail.

[0032] Working principle: When in use, the utility model monitors the humidity inside the control cabinet body 1 through the humidity sensor 22, and transmits the monitoring signal to the intelligent controller 21. When the humidity is too high, the intelligent controller 21 intelligently controls the exhaust fan 2 and the heating wire 4 to be powered on to work. The exhaust fan 2 sucks the humid air in the control cabinet body 1 into the heating box 3 through the first conduit 18 and the second conduit 19. The heating wire 4 is powered on to heat the humid air to increase its temperature. Under the action of the exhaust fan 2, the heated humid air can enter the spiral condenser 7 for liquefaction and condensation. When the water vapor in the humid air contacts the inner wall of the spiral condenser 7, the liquefied condensation operation can be performed. The condensed water droplets can fall along the spiral condenser 7 to the bottom of the liquid collecting box 6. The condensed air enters the dehumidification box 9 through the air guide 8, and passes through the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 upward in turn for dehumidification. The dehumidified air is discharged to the inside of the control cabinet body 1 through the exhaust hole 20 and the inverted whisker sheet 16, which greatly reduces the air inside the control cabinet body 1. The humidity is reduced to prevent the components inside the control cabinet body 1 from being damp and causing short circuits. Under the action of the exhaust fan 2, the control cabinet body 1 can be made to circulate the air inside the control cabinet body 1, and the water vapor in the air is condensed and dehumidified during the flow process to reduce the air humidity inside the control cabinet body 1. The humidity inside the control cabinet body 1 is monitored by the humidity sensor 22. When the humidity is too high, the dehumidification operation is performed in time to improve the safety of the control cabinet body 1. The utility model can also drain the liquid collecting box through the drain pipe 17. 6, the condensate collected inside is discharged to prevent the condensate from entering the dehumidification box 9 through the air duct 8 when too much condensate is collected. When no air is blown out of the exhaust hole 20, the inverted whisker sheet 16 can be kept in a closed state to prevent the uncondensed wet air in the control cabinet body 1 from directly entering the dehumidification box 9 through the exhaust hole 20, causing the dehumidification effect of the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15 to decrease, thereby reducing the replacement cycle of the silica dehumidification plate 13, the sponge dehumidification layer 14 and the activated carbon dehumidification layer 15.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A humidity control device for an electrical control cabinet, characterized in that: Humidity control devices include: An exhaust fan (2), wherein the exhaust fan (2) is fixedly arranged on the upper surface of the control cabinet body (1); A heating box (3) and a condensing box (5), wherein the heating box (3) and the condensing box (5) are fixedly connected to the side surface of the control cabinet body (1), a heating wire (4) is installed inside the heating box (3), and a liquid collecting box (6) and a spiral condensing tube (7) are respectively fixedly connected inside the condensing box (5); A dehumidification box (9), a humidity sensor (22) and an intelligent controller (21), wherein the dehumidification box (9), the humidity sensor (22) and the intelligent controller (21) are respectively fixedly connected to the inner wall of the control cabinet body (1); the inner wall of the dehumidification box (9) is fixedly connected to a fixing plate (11); the upper surface of the fixing plate (11) is movably connected to a silicon dioxide dehumidification plate (13), a sponge dehumidification layer (14) and an activated carbon dehumidification layer (15); and the side surface of the dehumidification box (9) is provided with an exhaust hole (20).

2. A humidity control device for an electrical control cabinet according to claim 1, characterized in that: A shell is installed on the outside of the exhaust fan (2), and a first duct (18) and a second duct (18) are fixedly connected at both ends of the exhaust fan (2), respectively. The exhaust fan (2) is connected to the inside of the heating box (3) and the control cabinet body (1) through the first duct (18) and the second duct (19), respectively.

3. A humidity control device for an electrical control cabinet according to claim 1, characterized in that: The surface of the condensing tank (5) is fixedly connected with a liquid inlet pipe and a liquid outlet pipe respectively, and the lower end side surface of the collecting tank (6) is fixedly connected with a drain pipe (17), the drain pipe (17) is fixedly passed through the condensing tank (5) and extends to the outside of the condensing tank (5), and a manual valve is fixedly installed on the side surface of the drain pipe (17).

4. A humidity control device for an electrical control cabinet according to claim 1, characterized in that: An air duct (8) is fixedly connected to the upper side surface of the liquid collecting box (6), and the interior of the air duct (8) is respectively connected to the interior of the liquid collecting box (6) and the dehumidification box (9). The liquid collecting box (6) is connected to the interior of the heating box (3) via a spiral condenser tube (7), and the spiral condenser tube (7) is a spiral structure.

5. The humidity control device for an electrical control cabinet according to claim 1, characterized in that: A long screw (12) is fixedly connected to the upper surface of the locking plate (11); the surfaces of the silica dehumidification plate (13), the sponge dehumidification layer (14) and the activated carbon dehumidification layer (15) are respectively provided with circular holes; the long screw (12) is movably inserted into the inner wall of the circular hole; the upper end of the long screw (12) is locked and fixed by a nut; the silica dehumidification plate (13), the sponge dehumidification layer (14) and the activated carbon dehumidification layer (15) are all located above the air guide pipe (8).

6. A humidity control device for an electrical control cabinet according to claim 1, characterized in that: The upper side surface of the dehumidification box (9) is fixedly connected to a beard-reducing plate (16), the exhaust hole (20) is located inside the beard-reducing plate (16), and the upper end of the dehumidification box (9) is movably connected to an inspection cover (10).

7. A humidity control device for an electrical control cabinet according to claim 1, characterized in that: The humidity sensor (22) is electrically connected to the input end of the intelligent controller (21); the exhaust fan (2) and the heating wire (4) are electrically connected to the output end of the intelligent controller (21); and the exhaust fan (2), the heating wire (4), the intelligent controller (21) and the humidity sensor (22) are electrically connected to the power supply end of the control cabinet body (1).

Images