A closed microwave-assisted dehumidification wheel device and a dehumidification wheel control method

Abstract

The closed microwave-assisted dehumidification wheel device of the present invention comprises a vacuum pump, a first cover plate, a second cover plate, a first cylinder, a microwave generator, a machine body, a first filter screen, a second filter screen, a wheel motor, a dehumidification wheel, a second cylinder, a fan, a first humidity detector, a second humidity detector and a roller. The internal space of the dehumidification wheel device is divided into a lower dehumidification zone and an upper regeneration zone. The dehumidification wheel is fixed on two space dividing lines by a roller. When it is located in the dehumidification zone, it serves as a moisture absorption functional zone, and when it is located in the regeneration zone, it serves as a function zone to be dried. The dehumidification wheel in the dehumidification zone absorbs the indoor air to be dried by the fan to supply air to the dehumidification air duct. The gas entering the air inlet hole is dried by the moisture absorption functional zone in the dehumidification air duct, and the dried air is discharged back to the indoor space for internal circulation. The moisture absorption functional zone determines whether the desiccant can continue to work. After the desiccant loses its moisture absorption capacity, it is driven by the dehumidification wheel to rotate to the regeneration zone to regenerate its moisture absorption capacity.

Description

Technical Field

[0001] The invention relates to a closed microwave-assisted dehumidification wheel device and a dehumidification wheel control method, and belongs to the field of dehumidification. Background Art

[0002] It is humid and rainy in the south in spring and summer. The moisture in the air will diffuse with the air flow, which will increase the humidity in the space. Various items are prone to moisture and mildew during storage, especially in small and confined spaces. Therefore, a dehumidifier is needed to dehumidify the space.

[0003] Existing dehumidifiers are mainly based on condensation. The air needs to be cooled during the dehumidification process, which has a huge impact on storage materials that require constant temperature dehumidification. In addition, the air humidity cannot be closed-loop controlled to achieve the goal of accurate control of constant air humidity.

[0004] The existing rotary dehumidification device is designed with a huge rotor mechanism to accommodate a large amount of hygroscopic materials. It works stably by introducing external regeneration air to dehumidify and regenerate the hygroscopic rotor. During the working process, it uses hot air to heat the external air to regenerate the rotor after absorbing moisture. The regeneration process has a long cycle and high energy consumption, and its application scenarios are limited due to its huge size.

[0005] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Summary of the invention

[0006] In order to solve the problems in the prior art of high energy consumption during regeneration of the rotary dehumidification device, long drying cycle of the regenerated desiccant, large space occupation volume and narrow scope of application due to the introduction of regeneration air, the present invention provides a closed microwave-assisted dehumidification rotary wheel device and a dehumidification rotary wheel control method to solve the problems raised by the above-mentioned background technology.

[0007] The present invention adopts the following technical scheme: a closed microwave-assisted dehumidification wheel device, comprising a vacuum pump, a first cover plate, a second cover plate, a first cylinder, a microwave generator, a machine body, a first filter screen, a second filter screen, a wheel motor, a dehumidification wheel, a second cylinder, a fan, a first humidity detector, a second humidity detector and a roller shaft, wherein the roller shaft penetrates the internal space of the machine body and its left and right ends are fixed on the left and right side walls of the machine body, the dehumidification wheel is located in the machine body and fixed on the roller shaft, the wheel motor is installed in the bottom wall and is connected to a pinion gear, the pinion gear is meshed with the teeth on the dehumidification wheel for transmission, the left and right side walls of the machine body are respectively formed with air inlet holes for air intake and air outlet holes for air outlet, the air inlet hole is fixedly mounted with a first filter screen, the air outlet hole is fixedly mounted with a second filter screen, the second filter screen is fixedly mounted with a second filter screen There is a first humidity detector, and a second humidity detector is fixedly installed on the first filter. The fan is installed in the machine body and is located between the first humidity detector and the dehumidification wheel. The first cover plate and the second cover plate are both located in the machine body and above the roller shaft. The first cover plate and the second cover plate are respectively located on the left and right sides of the dehumidification wheel. The first cylinder is located on the right side of the second cover plate, and the second cover plate is fixed on the telescopic rod of the first cylinder. The second cylinder is located on the left side of the first cover plate, and the first cover plate is fixed on the telescopic rod of the second cylinder. A through hole is formed on the first cover plate above the installation position of the second cylinder. The suction port of the vacuum pump is connected to the through hole of the first cover plate through a hard pipe, and the exhaust port is connected to the air supply ports of the first cylinder and the second cylinder and the air outlet formed on the top of the machine body through a hard pipe. The microwave generator is fixed on the inner side walls of the first cover plate and the second cover plate.

[0008] Furthermore, the desiccant in the dehumidification wheel is silicon nitride or activated carbon or silicon dioxide powder.

[0009] Furthermore, the roller shaft divides the internal space of the machine body into a regeneration zone located in the upper part and a dehumidification zone located in the lower part, and the dehumidification wheel is fixed on the dividing line between the regeneration zone and the dehumidification zone by the roller shaft.

[0010] Furthermore, the dehumidification wheel is divided into a plurality of sectors by a plurality of grids passing through the center point of the wheel.

[0011] The present invention adopts the following technical solution: a closed microwave-assisted dehumidification wheel control method, the steps are as follows:

[0012] Step 1: By setting the humidity level, the incoming air humidity is detected. When the current air humidity is detected to be higher than the set threshold, the fan continues to work;

[0013] Step 2: The input air passes through the dehumidification wheel and is detected by the second humidity detector. When the difference in air humidity before and after dehumidification gradually approaches, the dehumidification wheel is driven by the wheel motor to rotate, and the saturated desiccant is transferred to the regeneration area.

[0014] Step 3: After the regeneration zone detects the rotation of the dehumidification wheel, the vacuum pump is started, and the vacuum pump is connected to the first cylinder and the second cylinder, so that the first cylinder and the second cylinder respectively press the second cover plate and the first cover plate to form a closed cavity with the dehumidification wheel;

[0015] Step 4: The desiccant in the regeneration zone works through the microwave generator in the regeneration zone, and the vacuum pump depressurizes the regeneration zone so that the water is separated from the desiccant and discharged, so that the desiccant recovers its moisture absorption function;

[0016] Step 5: The first humidity detector and the second humidity detector periodically obtain humidity signals, and determine whether it is necessary to transfer the desiccant to the regeneration area for dehumidification by comparing the difference between the humidity signals of the first humidity detector and the second humidity detector;

[0017] Step 6: When the input air humidity reaches the standard, stop the fan, the rotor motor, the vacuum pump and turn off the microwave generator.

[0018] Furthermore, in step three: the vacuum pump absorbs air flowing through the dehumidification wheel during operation, and a part of the absorbed gas is passed into the first cylinder and the second cylinder, so that the vacuum pump works simultaneously with the first cylinder and the second cylinder, and by squeezing the second cover plate, the first cover plate and the dehumidification wheel, a closed cavity is formed during the regeneration process for reducing the pressure.

[0019] Furthermore, in step 4: after the regeneration zone is finished working, the second cover plate and the first cover plate are driven by the spring on the first cylinder and the second cylinder to reset. At this time, the vacuum pump stops working, the air pressure in the cavity is restored, and the first cover plate and the second cover plate are automatically restored.

[0020] Furthermore, in step five: a regeneration signal is calculated through the humidity information received by the first humidity detector and the second humidity detector, and the regeneration signal is sent to the vacuum pump control board, and the control board controls the vacuum pump switch.

[0021] Furthermore, when the input air humidity reaches the standard, the vacuum pump stops working, and the springs on the first cylinder and the second cylinder drive the first cylinder and the second cylinder to return to their positions, waiting for the next rotation of the dehumidification wheel regeneration.

[0022] The present invention has the following beneficial effects: when the present invention detects that the gas humidity is outside the set range in the dehumidification zone, the fan is started; after detecting that the humidity difference before and after the dehumidification wheel is reduced, the wheel motor is started to drive the dehumidification wheel to rotate to the regeneration zone for regeneration; the vacuum pump in the regeneration zone is linked with the cylinder to produce a closed zone, and at the same time the air pressure in the cavity is reduced, and the regeneration of the dehumidifier in the dehumidification wheel is completed under the joint action of the microwave generator; the problems of high energy consumption, long cycle and large volume in the regeneration process of the traditional dehumidification wheel are solved, and the goal of reducing energy consumption and reducing the volume of the wheel dehumidification equipment is achieved. The reduction in volume can have a wider range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the dehumidification wheel device.

[0024] Figure 2 Schematic diagram of the wheel grid.

[0025] Figure 3 Schematic diagram of the linkage principle of the vacuum pump cylinder cover plate.

[0026] Figure 4 Schematic diagram of the cylinder spring return principle.

[0027] In the figure: 1-vacuum pump, 2-first cover plate, 3-second cover plate, 4-first cylinder, 5-microwave generator, 6-machine body, 7-first filter screen, 10-second filter screen, 8-rotor motor, 9-dehumidification wheel, 11-second cylinder, 12-fan, 13-first humidity detector, 14-second humidity detector. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] The closed microwave-assisted dehumidification wheel device of the present invention comprises a vacuum pump 1, a first cover plate 2, a second cover plate 3, a first cylinder 4, a microwave generator 5, a machine body 6, a first filter screen 7, a second filter screen 10, a wheel motor 8, a dehumidification wheel 9, a second cylinder 11, a fan 12, a first humidity detector 13, a second humidity detector 14 and a roller 15. The roller 15 penetrates the internal space of the machine body 6 and its left and right ends are fixed on the left and right side walls of the machine body 6. The dehumidification wheel 9 is located in the machine body 6 and fixed on the roller 15. The wheel motor 8 is installed in the bottom wall of the machine body 6 and is connected to a pinion (not shown). The pinion is driven by teeth meshing with teeth on the dehumidification wheel 9. Silicon nitride is used as an example of the desiccant in the dehumidification wheel 9, and different desiccant materials are still protected by this patent.

[0030] Air inlet holes for air intake and air outlet holes for air discharge are formed on the left and right side walls of the machine body 6 below the roller shaft 15. Air enters from the air inlet holes, and after being dried by the dehumidification wheel 9, the air is discharged from the air outlet holes. The dehumidification wheel 9 is fixed to the center of the machine body by the roller shaft 15, and the dehumidification wheel 9 is driven to rotate by the wheel motor 8.

[0031] A first filter 7 is fixedly mounted on the air inlet hole, a second filter 10 is fixedly mounted on the air outlet hole, a first humidity detector 13 is fixedly mounted on the second filter 10, and a second humidity detector 14 is fixedly mounted on the first filter 7. A fan 12 is mounted in the body 6 and is located between the first humidity detector 13 and the dehumidification wheel 9.

[0032] The first cover plate 2 and the second cover plate 3 are both located in the machine body 6 and above the roller shaft 15 . The first cover plate 2 and the second cover plate 3 are respectively located on the left and right sides of the dehumidification wheel 9 .

[0033] The first cylinder 4 is located on the right side of the second cover plate 3 , and the second cover plate 3 is fixed to the telescopic rod of the first cylinder 4 by welding or screws.

[0034] The second cylinder 11 is located on the left side of the first cover plate 2 , and the first cover plate 2 is fixed to the telescopic rod of the second cylinder 11 by welding or screws.

[0035] A through hole (not marked) is formed on the first cover plate 2 above the installation position of the second cylinder 11. The suction port of the vacuum pump 1 is connected to the through hole of the first cover plate 2 using a flexible hard pipe, and the exhaust port is connected to the air supply ports of the first cylinder 4 and the second cylinder 11, as well as the air outlet (not marked) formed on the top of the body 6 by a hard pipe.

[0036] The microwave generator 5 is fixed to the inner side walls of the first cover plate 2 and the second cover plate 3 by screws.

[0037] The closed microwave-assisted dehumidification wheel device of the present invention divides its internal space into a regeneration zone located in the upper part and a dehumidification zone located in the lower part by a roller 15. Since the dehumidification wheel 9 is fixed on the dividing line between the regeneration zone and the dehumidification zone by the roller 15, the dehumidification wheel 9 is divided into two parts, one part is used as a moisture absorption functional area when it is located in the dehumidification zone, and the other part is used as a drying functional area when it is located in the regeneration zone. The moisture absorption functional area is also called a dehumidification air duct. Among them, the dehumidification wheel 9 in the dehumidification zone is sucked by the fan 12 to supply air to the dehumidification air duct. The gas entering the air inlet hole is dried by the moisture absorption functional area in the dehumidification air duct, and the dried air is discharged back to the indoor space for internal circulation.

[0038] The moisture absorption functional area determines whether the desiccant can continue to work through the values ​​of the first humidity detector 13 and the second humidity detector 14. After losing its moisture absorption capacity, the desiccant is driven by the dehumidification wheel 9 to rotate to the regeneration area for moisture absorption capacity regeneration. In the regeneration area, the moisture in the desiccant is discharged. The vacuum pump in the regeneration area provides pressure to the first cylinder 4 and the second cylinder 11, so that the second cover plate 3 and the first cover plate 2 respectively form a closed cavity with the outer wall of the dehumidification wheel 9 under the pressure of the first cylinder 4 and the second cylinder 11. At the same time, the microwave generator 5 works on the desiccant in the regeneration area, and the desiccant and the water vapor in the closed cavity are discharged under the operation of the vacuum pump 1, so as to realize the regeneration of the desiccant. The closed cavity is linked by the first cylinder, the second cylinder and the vacuum pump. The source of gas absorbed by the vacuum pump is the gas flowing through the cavity before and after it is closed. When the air pressure in the cavity drops to a fixed value and cannot be further reduced, it means that the regeneration in the regeneration area has been completed, and the vacuum pump stops working. The springs on the first cylinder and the second cylinder drive the first cylinder and the second cylinder to return to their positions, and the dehumidification wheel 9 can continue to rotate with the working state of the wheel motor 8 and wait for the next instruction for desiccant regeneration.

[0039] like Figure 2 As shown, the dehumidification wheel 9 is divided by radial grids so that the desiccant in the desiccant zone and the regeneration zone do not affect each other. Entering the regeneration zone for regeneration, the dehumidification wheel stops rotating during operation, and the vacuum pump works to transport the air filling the gap of the dehumidification wheel 9 and the air inside the first cover plate 2 and the second cover plate 3 before being squeezed to the first cylinder and the second cylinder. The first cylinder and the second cylinder receive pressure to squeeze the cavity to form a closed space. In this process, the microwave generator starts to operate and acts on the desiccant. The microwave works on the water in the desiccant, so that the water vapor in the wheel evaporates due to heat, and the desiccant is easier to regenerate. During the operation of the vacuum pump, the air pressure inside the cavity is reduced, so that the water sublimates into a gaseous state and is discharged to achieve the regeneration of the dehumidification function of the wheel.

[0040] like Figure 3 As shown, after the regeneration zone detects that the dehumidification wheel 9 is rotating, the vacuum pump 1 is started, wherein the vacuum pump is connected to the first cylinder 4 and the second cylinder 11, so that the first cylinder 4 and the second cylinder 11 press the second cover plate 3 and the first cover plate 2 to form a closed cavity with the dehumidification wheel 9. The desiccant is worked by the microwave generator in the regeneration zone, and the vacuum pump depressurizes the regeneration zone so that the water is separated from the desiccant and discharged, thereby restoring the desiccant's moisture absorption function.

[0041] The first humidity detector 13 and the second humidity detector 14 periodically obtain humidity signals, and determine whether the desiccant needs to be transferred to the regeneration area for dehumidification by comparing the difference between the humidity signals of the first humidity detector 13 and the second humidity detector 14. When the input air humidity reaches the standard, the fan 12, the rotor motor 8, the vacuum pump 1 and the microwave generator 5 are stopped in sequence.

[0042] See attached Figure 4 When the vacuum pump stops working, the spring on the second cylinder 11 drives the cylinder telescopic rod to rebound, so that the first cover plate returns to its original position. Similarly, the spring on the first cylinder 4 drives the cylinder telescopic rod to rebound, so that the second cover plate 3 returns to its original position.

[0043] The closed microwave-assisted dehumidification wheel control method of the present invention is as follows:

[0044] Step 1: By setting the humidity level, the humidity of the incoming air is detected. When it is detected that the current air humidity is higher than the set threshold, the fan 12 continues to work;

[0045] Step 2: The input air passes through the dehumidification wheel 9 and is detected by the second humidity detector 14. When the difference in air humidity before and after dehumidification gradually approaches, the dehumidification wheel 9 is driven by the wheel motor 8 to rotate, and the saturated desiccant is transferred to the regeneration area;

[0046] Step 3: After the regeneration zone detects that the dehumidification wheel 9 is rotating, the vacuum pump is started, wherein the vacuum pump is connected to the first cylinder and the second cylinder, so that the first cylinder and the second cylinder respectively press the second cover plate and the first cover plate to form a closed cavity with the dehumidification wheel 9;

[0047] Step 4: The desiccant in the regeneration zone works through the microwave generator 5 in the regeneration zone, and the vacuum pump depressurizes the regeneration zone so that the water is separated from the desiccant and discharged, thereby restoring the desiccant's moisture absorption function;

[0048] Step 5: The first humidity detector 13 and the second humidity detector 14 periodically obtain humidity signals, and determine whether it is necessary to transfer the desiccant to the regeneration area for dehumidification by comparing the humidity signals of the first humidity detector 13 and the second humidity detector 14;

[0049] Step 6: When the input air humidity reaches the standard, stop the fan 12, the rotary motor 8, the vacuum pump 1 and turn off the microwave generator 5 in sequence.

[0050] In the closed microwave-assisted dehumidification wheel control method of the present invention, the air humidity before and after the dehumidification wheel is detected by comparison, so as to judge whether the current desiccant needs to restore the moisture absorption capacity through the regeneration zone, and send a regeneration signal to the regeneration zone.

[0051] Water evaporates easily in a low-pressure environment. At the same time, when the desiccant is in a microwave high-frequency electric field with an extremely short oscillation period, the water molecules inside it will be polarized and arranged neatly along the direction of the microwave electric field, and then quickly rotate with the interactive changes in the direction of the high-frequency alternating electric field, and produce violent collisions and friction. Part of the microwave energy is converted into molecular kinetic energy and expressed in the form of heat, which increases the temperature of the water and makes the water evaporate rapidly under low pressure, thereby drying the desiccant.

[0052] During operation, the vacuum pump absorbs air passing through the dehumidification wheel 9, and part of the absorbed gas is passed into the first cylinder and the second cylinder, so that the vacuum pump works simultaneously with the first cylinder and the second cylinder, and by squeezing the second cover plate, the first cover plate and the dehumidification wheel 9, a closed cavity is formed during the regeneration process for reducing the pressure.

[0053] The dehumidification wheel 9 is divided into a plurality of sectors by a plurality of grids passing through the center point of the wheel, and the desiccant between the sectors does not interfere with each other.

[0054] After the regeneration zone is finished working, the springs on the first cylinder and the second cylinder drive the second cover plate and the first cover plate to reset. At this time, the vacuum pump stops working, the air pressure in the cavity is restored, and the first cover plate and the second cover plate are automatically restored.

[0055] A regeneration signal is calculated from the humidity information received by the first humidity detector 13 and the second humidity detector 14, and the regeneration signal is sent to the vacuum pump control board, which controls the vacuum pump switch.

[0056] When the air pressure in the cavity drops to a fixed value and no longer decreases, it means that the regeneration in the regeneration zone has been completed, the vacuum pump stops working, and the springs on the first cylinder and the second cylinder drive the first cylinder and the second cylinder to return to their positions to prevent affecting the rotation of the dehumidification wheel 9 during the next regeneration.

[0057] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A closed microwave-assisted dehumidification wheel device, characterized in that: The invention comprises a vacuum pump (1), a first cover plate (2), a second cover plate (3), a first cylinder (4), a microwave generator (5), a machine body (6), a first filter screen (7), a second filter screen (10), a rotary motor (8), a dehumidification rotary wheel (9), a second cylinder (11), a fan (12), a first humidity detector (13), a second humidity detector (14) and a roller (15). The roller (15) penetrates the internal space of the machine body (6) and its left and right ends are fixed on the left and right side walls of the machine body (6). The dehumidification rotary wheel (9) is located at the machine body (6). ) and fixed on the roller shaft (15), the wheel motor (8) is installed in the bottom wall and connected to a pinion gear, the pinion gear is meshed with the teeth on the dehumidification wheel (9) for transmission, the left and right side walls of the machine body (6) are respectively formed with air inlet holes for air intake and air outlet holes for air outlet, the air inlet holes are fixedly mounted on the first filter screen (7), the air outlet holes are fixedly mounted on the second filter screen (10), the second filter screen (10) is fixedly mounted on the first humidity detector (13), the first filter screen (7) ), a second humidity detector (14) is fixedly mounted on the body (6), the fan (12) is mounted in the body (6) and is located between the first humidity detector (13) and the dehumidification wheel (9), the first cover plate (2) and the second cover plate (3) are both located in the body (6) and above the roller (15), the first cover plate (2) and the second cover plate (3) are respectively located on the left and right sides of the dehumidification wheel (9), the first cylinder (4) is located on the right side of the second cover plate (3), and the second cover plate (3) is fixed on the telescopic rod of the first cylinder (4), and the second cylinder (4) is located on the right side of the second cover plate (3). (11) is located on the left side of the first cover plate (2), and the first cover plate (2) is fixed on the telescopic rod of the second cylinder (11), a through hole is formed on the first cover plate (2) above the installation position of the second cylinder (11), the air intake port of the vacuum pump (1) is connected to the through hole of the first cover plate (2) through a hard pipe, and the air exhaust port is connected to the air supply port of the first cylinder (4), the second cylinder (11) and the air outlet formed on the top of the body (6) through a hard pipe, and the microwave generator (5) is fixed on the inner side walls of the first cover plate (2) and the second cover plate (3).

2. The closed microwave-assisted dehumidification wheel device according to claim 1, characterized in that: The desiccant in the dehumidification wheel (9) is silicon nitride or activated carbon or silicon dioxide powder.

3. The closed microwave-assisted dehumidification wheel device according to claim 1, characterized in that: The roller (15) divides the internal space of the machine body (6) into a regeneration zone located in the upper half and a dehumidification zone located in the lower half, and the dehumidification wheel (9) is fixed on the dividing line between the regeneration zone and the dehumidification zone by the roller (15).

4. The closed microwave-assisted dehumidification wheel device according to claim 3, characterized in that: The dehumidification wheel (9) is divided into a plurality of sectors by a plurality of grids passing through the center point of the wheel.

5. A dehumidification wheel control method for a closed microwave-assisted dehumidification wheel device according to any one of claims 1 to 4, characterized in that: Here are the steps: Step 1: By setting the humidity level, the humidity of the incoming air is detected, and when it is detected that the current air humidity is higher than the set threshold, the fan (12) continues to work; Step 2: The input air passes through the dehumidification wheel (9) and is detected by the second humidity detector (14). When the difference in air humidity before and after dehumidification gradually approaches, the dehumidification wheel (9) is driven by the wheel motor (8) to rotate, and the saturated moisture absorbent is transferred to the regeneration zone. Step 3: After the regeneration zone detects that the dehumidification wheel (9) is rotating, the vacuum pump is started, and the vacuum pump is connected to the first cylinder and the second cylinder, so that the first cylinder and the second cylinder respectively apply pressure to the second cover plate and the first cover plate to form a closed cavity with the dehumidification wheel (9); Step 4: The desiccant in the regeneration zone is subjected to work by the microwave generator (5) in the regeneration zone, and the vacuum pump is used to reduce the pressure in the regeneration zone so that the water is separated from the desiccant and discharged, so that the desiccant can resume its moisture absorption function; Step 5: The first humidity detector (13) and the second humidity detector (14) periodically obtain humidity signals, and by comparing the humidity signals of the first humidity detector (13) and the second humidity detector (14), it is determined whether the desiccant needs to be transferred to the regeneration area for dehumidification; Step 6: When the input air humidity reaches the standard, the fan (12), the rotary motor (8), the vacuum pump (1) are stopped in sequence and the microwave generator (5) is turned off.

6. The closed microwave-assisted dehumidification wheel control method according to claim 5, characterized in that: In step three: during operation, the vacuum pump absorbs air flowing through the dehumidification wheel (9), and part of the absorbed gas is passed into the first cylinder and the second cylinder, so that the vacuum pump works simultaneously with the first cylinder and the second cylinder. By squeezing the second cover plate, the first cover plate and the dehumidification wheel (9), a closed cavity is formed during the regeneration process for reducing the pressure.

7. The closed microwave-assisted dehumidification wheel control method according to claim 6, characterized in that: In step 4: after the regeneration zone is finished working, the springs on the first cylinder and the second cylinder drive the second cover plate and the first cover plate to reset. At this time, the vacuum pump stops working, the air pressure in the cavity is restored, and the first cover plate and the second cover plate are automatically restored.

8. The closed microwave-assisted dehumidification wheel control method according to claim 7, characterized in that: In step five: a regeneration signal is calculated from the humidity information received by the first humidity detector (13) and the second humidity detector (14), and the regeneration signal is sent to the vacuum pump control board, which controls the vacuum pump switch.

9. The closed microwave-assisted dehumidification wheel control method according to claim 8, characterized in that: When the input air humidity reaches the standard, the vacuum pump stops working, and the springs on the first cylinder and the second cylinder drive the telescopic rods and the cover plate of the first cylinder and the second cylinder to return to their positions, waiting for the next rotation of the dehumidification wheel (9) when it is regenerated.

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