JPH0557128A - Dry dehumidifier - Google Patents

Abstract

PURPOSE:To enhance the moisture adsorbing efficiency of a dry dehumidifier. CONSTITUTION:First and second air passage changeover parts 6,7 changing over an air passage 1 to the inside and outside of a room are arranged to the air passage 1 and an adsorption part 10 and an air compressor 11 are arranged in the air passage 1 to control the first and second air passage changeover parts 6,7 and the air compressor by a control circuit 12. At the time of the adsorption of moisture, the second air passage changeover part 7 is closed and the air compressor 11 is operated in connection with this. By this constitution, since the air containing moisture from the suction port 2 on the indoor side is sent to the adsorption part 10 under pressure to reach the deep part of an adsorbent 8, moisture in air can be adsorbed with high efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry dehumidifier for adsorbing moisture on an adsorbent and releasing the adsorbed moisture from the adsorbent by using the PSA method and the TSA method together.

[0002]

2. Description of the Related Art A conventional dry dehumidifying apparatus is, for example, a TSA method as shown in JP-A-63-286634 or a PSA as shown in JP-A-2-233119.
One of the laws was common.

The structure of the TSA method will be described below with reference to FIG. As shown in the figure, 41 is a casing forming an air passage. This casing 41
Is attached to the outer wall 45, and the outdoor air intake port 4 of the casing 41 is attached to the openings A and B provided in the outer wall 45.
8 and the outdoor air outlet 49 communicate with each other. The casing 41 is provided with an indoor air intake port 46 corresponding to the outdoor air intake port 48, and the outdoor air intake port 48 and the indoor air intake port 46 are switched by a damper 50. Similarly, an indoor air outlet 47 is provided corresponding to the outdoor air outlet 49, and the outdoor air outlet 49 and the indoor air outlet 47 are switched by a damper 51. And casing 4
In the air passage formed by 1, the blown air 42 and the heater 4
3. The solid moisture absorbent 44 for dehumidification is arranged in order from the upstream of the air passage.

In the above structure, when the indoor air intake port 46 and the indoor air discharge port 47 are opened, the air in the room is taken in from the indoor air intake port 46 by the blower 42, and the indoor air discharge port passes through the air passage. It is discharged from 47. Then, the moisture of the indoor air is removed by the solid moisture absorbing material 44 provided in the air passage, and the dry air is released into the room.

When the indoor air intake port 46 and the indoor air discharge port 47 are closed, the outdoor air intake port 48 and the outdoor air discharge port 49 are opened, so that the outdoor air is taken in from the outdoor air intake port 48 by the blower 42. And is discharged from the outdoor air discharge port 49 through the air passage. At this time, when the heater 43 is caused to generate heat, the heated air causes the solid hygroscopic material 44 to move.
The moisture adsorbed on is released and discharged to the outside of the room.
In this way, the air in the room is dehumidified and dehumidified from the solid hygroscopic material 44.

Next, the structure of the PSA method will be described with reference to FIG. As shown in the drawing, two pressure swing adsorption towers 6 each having an adsorbent incorporated in the lower portion of an air line 61 for sending a processing gas through an air compressor 42.
1a and 61b are connected in parallel. This adsorption tower 61
A discharge valve 62 for discharging the dried air after processing is connected to the upper part of each of a and 61b, and the discharge valve 62 is connected to each other by a pressure equalizing valve 63. In addition, the adsorption towers 61a, 6
The lower part of 1b is connected to a surge tank 67 by a line 66 via a valve 64 and a vacuum pump 65. The surge tank 67 is water-sealed in a water tank 68 containing sealing water 74 in order to reduce pressure fluctuations due to fluctuations in the purge gas amount. The surge tank 67 is connected to an outlet pipe 69 for dry air, and is also connected to a purge line 72 connected to the adsorption towers 61 a and 61 b via an air supply fan 70 and a valve 71. Reference numeral 73 is a valve provided between the air line 61 and the adsorption towers 61a and 61b.

In the above structure, when air is sent to one of the adsorption towers 61a to adsorb the moisture to the adsorbent, the other adsorption tower 61b is connected to the surge tank 67, and the vacuum pump 65 decompresses the other adsorption tower 61b. The surge tank 6 is operated by removing the moisture adsorbed on the adsorbent of the tower 61b.
It is supposed to be sent to 7. And the two adsorption towers 61
By switching the adsorption / desorption of a and 61b, dry air can be continuously obtained.

[0008]

In such a conventional dry dehumidifying device, since the TSA method merely blows air, the adsorption efficiency is low, and the PSA method has an air compressor, a vacuum pump, and a vacuum pump.
Since it is necessary to equip two adsorption towers, there is a problem that it is difficult to make it compact and the cost becomes high.

The present invention is to solve the above-mentioned problems.
By using the method A and the PSA method together, it is an object to provide a highly efficient adsorption of moisture and to provide a compact dry dehumidifier.

[0010]

In order to achieve the above-mentioned object, the first means of the present invention is to provide an adsorbing section having an adsorbent and a heat source device arranged in an air duct, and the adsorbing section. An air compressor that sends air, a first air passage switching portion that takes in air to the adsorption portion, a second air passage switching portion that takes out air from the adsorption portion, the heat source device and the air compressor in an adsorption step. Machine and an adsorption control circuit for controlling the operation of the first and second air passage switching portions, and the operation of the heat source device, the air compressor, and the first and second air passage switching portions in the regeneration step. A regeneration control circuit for controlling, a timer circuit for transmitting a signal at a preset time, and an on / off state alternately for the adsorption control circuit and the regeneration control circuit each time a signal from the timer circuit is received. With a configuration that includes a driving circuit that sends out signals That.

The second means is an adsorbing section having an adsorbent and a heat source device arranged in the air passage, an air compressor for sending air to the adsorbing section, and a decompressor for extracting air from the adsorbing section. When,
A first air passage switching unit that takes in air to the adsorption unit, a second air passage switching unit that takes out air from the adsorption unit, and a first air passage that opens and closes an air passage upstream of the adsorption unit. An opening / closing unit, and a second air passage opening / closing unit that opens and closes an air passage on the downstream side of the adsorption unit,
An adsorption control circuit that controls the operations of the heat source device, the air compressor, the pressure reducer, the first and second air passage switching units, and the first and second air passage opening and closing units in an adsorption step; In the regeneration step, the heat source unit, the air compressor, the pressure reducer, the first and second air passage switching units, and the first unit.
And a regeneration control circuit for controlling the operation of the second air passage opening / closing unit, a timer circuit for transmitting a signal at a predetermined time set in advance, and the adsorption control circuit for receiving a signal from the timer circuit. And an operation circuit for alternately sending ON / OFF signals to the regeneration control circuit.

[0012]

According to the present invention, since the dehumidified air is pressurized by the air compressor and passed through the adsorbent in the adsorption step, the moisture in the air is pumped to the deep part of the adsorbent to be adsorbed. The efficiency can be increased.

Further, the adsorbent can be automatically regenerated by alternately operating the adsorption control circuit and the regeneration control circuit at preset time intervals.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.
The description will be made with reference to FIG.

As shown in FIG. 1, the air passage 1 communicates with an indoor-side intake port 2 communicating with a dehumidified space (hereinafter referred to as the room) and an indoor-side exhaust port 3 communicating with the room, and the dehumidified space ( Hereinafter, the outdoor side intake port 4 that communicates with the outdoor side) and the outdoor side exhaust port 5 that communicates with the outdoor side communicate with each other. The first air passage switching unit 6 switches between the indoor air intake port 2 and the outdoor air intake port 4, and the second air passage switching unit 7 switches between the indoor air exhaust port 3 and the outdoor air exhaust port 5. It is a thing. Adsorption part 1 in which adsorbent 8 and heat source device 9 are integrally formed in air passage 1.
0 is set. The adsorbing section 10 removes moisture in the indoor air pumped by the air compressor 11, and heats the adsorbent 8 to release the adsorbed moisture by the outdoor air. The control unit 12 interlocks and controls the operation of the first air passage switching unit 6, the second air passage switching unit 7, the heat source unit 9, and the air compressor 11.

Next, the control unit 12 will be described with reference to FIG. The adsorption control circuit 15 sends a signal to the first air passage switching unit 6 and the second air passage switching unit 7 to set the first and second air passage switching units 6 and 7 to the air passage 1 and the room. A first air passage switching circuit 16 for placing the air source 11 in a position to communicate with each other, a first heat source device control circuit 17 for sending a signal for stopping the operation of the heat source device 9, and a signal for operating the air compressor 11. It is composed of a first air compressor control circuit 19 for sending out. The reproduction control circuit 20 sends a signal to the first air passage switching unit 6 and the second air passage switching unit 7 to set the first and second air passage switching units 6 and 7 to the air passage 1 and the outdoor. A second air passage switching circuit 21 which is positioned so as to communicate with each other, a second heat source device control circuit 22 which sends a signal for operating the heat source device 9, and a second circuit which sends a signal for operating the air compressor 11. 2 air compressor control circuit 24. The timer circuit 25 sends out a signal at every preset predetermined time, and the driving circuit 26 turns on the adsorption control circuit 15 and the regeneration control circuit 20 alternately every time the signal from the timer circuit 25 is received. Send off signal. The reset circuit 27 sends a reset signal to the driving circuit 26 at the start of driving, and causes the driving circuit 26 to always send a signal to the regeneration control circuit 20 first. The timer circuit 25 and the driving circuit 2
6, the reset circuit 27 constitutes the main control circuit 28, and the control section 12 is constituted by the adsorption control circuit 15, the regeneration control circuit 20, and the main control circuit 28.

In the above structure, when the main power source is turned on,
The air in the room is dehumidified by alternately repeating the regeneration process and the adsorption process as described below. First, when the operation is started, the operation circuit 26 sends a signal to the reproduction control circuit 20 by the reset signal of the reset circuit 27, and the second air passage switching circuit 21 causes the first and second air passage switching units 6 and 6. 7 is positioned so that the outdoor intake port 4 and the outdoor exhaust port 5 are open. As a result, the outdoor intake port 5 and the outdoor exhaust port 5 are communicated with the flow path 1, and the regeneration process is performed. In this state, when the heat source device 9 and the air compressor 11 are operated by the signals of the second air compressor control circuit 24 and the second heat source device control circuit 22, the air compressor 11 sucks air from the outside. Air is sucked into the adsorption unit 10 heated by the heat source unit 9. The moisture adsorbed on the adsorbent 8 is released to the outside of the room by this intake air. The time of this regeneration process is measured by the timer circuit 25, and when a preset predetermined time has elapsed, the timer circuit 25 sends a signal and the operation circuit 26 sends a signal to the adsorption control circuit 15. With this signal, the first air passage switching circuit 16 positions the first air passage switching unit 6 so as to communicate with the indoor side intake port 2, and the second air passage switching unit 7 opens the air passage 1.
Position so that one end of is closed. First in this state
Air compressor control circuit 19 and first heat source machine control circuit 1
When the air compressor 11 is operated while the operation of the heat source device 9 is stopped by the signal of No. 7, the air compressor 11 sucks air from the room and pressure-feeds it to the adsorbing section 10, thereby reducing the air pressure in the air passage 1. To raise. Moisture contained in the air pressure-fed in this process is adsorbed by the adsorbent 8. However, since this air is pressurized, the moisture is pressure-fed and adsorbed to a deep portion of the adsorbent 8, so that the adsorption efficiency is improved. Will be high. When the adsorption of the moisture is completed, the first air passage switching circuit 16 causes the second air passage switching unit 7 to operate.
Positions the indoor side exhaust port 3 so as to communicate with the air passage 1. As a result, the dry air in which the moisture contained in the air passage 1 is adsorbed by the adsorbent 8 is discharged from the indoor side exhaust port 3 into the room. The time of this adsorption process is measured by the timer circuit 25, and when a preset predetermined time has elapsed, the timer circuit 25 sends a signal, and the operation circuit 26 sends a signal to the regeneration control circuit 15 to perform the regeneration process. Done.

As described above, according to the dry dehumidifying apparatus of the first embodiment of the present invention, the adsorption step is the PSA method and the regeneration step is the T step.
By adopting the SA method, the adsorption of moisture can be performed with high efficiency, and the adsorbent 8 can be regenerated without using a vacuum pump, so that the apparatus can be made compact. Further, since the heat source device 9 is used instead of the vacuum pump, there is an effect that the cost can be reduced.

The first air passage switching unit 6 and the second air passage switching unit 7 are controlled so that the air passage 1 communicates with the room during the regeneration process, and the air passage 1 is opened during the adsorption process. By communicating with the outside of the room, it can be used as a dry humidifier.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4.

The same parts as those shown in the first embodiment are designated by the same reference numerals, and only different parts will be described.

A first air passage opening / closing portion 31 is arranged between the air compressor 11 and the adsorption portion 10 in the air passage 1. This first
The air passage opening / closing section 31 is opened in conjunction with the operation of the air compressor 11 and is closed in conjunction with the operation of the decompressor 33. In addition, between the adsorption unit 10 of the air passage 1 and the second air passage switching unit 7, the second air passage opening / closing unit 32 and the pressure reducer 33 are arranged from the upstream side.
Are lined up. The second air passage opening / closing unit 32 is a pressure reducer 33.
It is designed to be opened in conjunction with the operation of No. 1 and closed in conjunction with the operation of the air compressor 11.

Next, in the adsorption control circuit 15, the first and second air passage opening / closing portions 3 are supplied by a signal from the operation circuit 26.
A first air passage opening / closing circuit 34 for controlling the opening / closing of the pressure reducers 1, 32 and a first pressure reducing device control circuit 35 for controlling the operation of the pressure reducing device 33 are additionally provided. Further, the regeneration control circuit 20 includes a second air passage opening / closing circuit 36 that controls the opening and closing of the first and second air passage opening / closing portions 31 and 32 by a signal from the operation circuit 26.
And a second pressure reducer control circuit 37 for controlling the operation of the pressure reducer 33.

In the above structure, when the main power source is turned on,
The air in the room is dehumidified by alternately repeating the regeneration process and the adsorption process as described below. The description of the same operation as that shown in the first embodiment will be simplified.

First, in the regeneration process, the first air passage switching unit 6 connects the air supply port 4 to the air passage 1, and the second air passage switching unit 7 connects the exhaust port 5 to the air passage 1. ing. Then, by the signal from the operation circuit 26, the second air passage opening / closing circuit 36
Closes the first air passage opening / closing portion 31 and opens the second air passage opening / closing portion 32. When the heat source unit 9 and the decompressor 33 are operated in this state, the decompressor 33 sucks the air in the adsorbent 8 to reduce the pressure. By this suction, the moisture adsorbed on the adsorbent 8 is released to the outside of the room. Then, when the signal is sent to the driving circuit 26 by being clocked by the timer circuit 25, the driving circuit 2
6 operates the first air passage opening / closing circuit 34, and the first air passage opening / closing circuit 34 opens the first air passage opening / closing portion 31 and closes the second air passage opening / closing portion 32. In this state, when the air compressor 43 is operated with the heat source device 9 stopped, the air compressor 11
Sucks air from the room and pressure-feeds it to the adsorption unit 10 to increase the air pressure in the air passage 1. Moisture contained in the air pressure-fed in this process is adsorbed by the adsorbent 8, but since this air is pressurized, the moisture is pressure-fed to the deep portion of the adsorbent 8 to be adsorbed. When the adsorption is completed, the first air passage opening / closing circuit 34 opens the second air passage opening / closing portion 32. As a result, the dry air in which the moisture contained in the air passage is adsorbed by the adsorbent 8 is discharged into the room through the second air passage opening / closing portion 32.

As described above, according to the dry dehumidifying apparatus of the second embodiment of the present invention, the adsorption step is the PSA method and the regeneration step is the P
By using the SA method and the TSA method in combination, it is possible to adsorb moisture with high efficiency.

[0027]

As is apparent from the above description of the embodiments, according to the present invention, the adsorption step is performed by the PSA method, and the regeneration step is performed by the PSA method. In addition to the above, the apparatus can be made compact. In addition, the adsorption step is a PSA method,
By performing the regeneration process in combination with the PSA method and the TSA method, the adsorption of moisture can be performed with high efficiency.

As described above, according to the present invention, it is possible to provide a dry dehumidifier having a high moisture adsorption efficiency.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of a dry dehumidifier of the present invention.

FIG. 2 is a block circuit diagram of the control unit.

FIG. 3 is a configuration diagram of the second embodiment.

FIG. 4 is a block circuit diagram of the control unit.

FIG. 5 is a block diagram of a conventional dry dehumidifier.

FIG. 6 is a block diagram of the other dry dehumidifier.

[Explanation of symbols]

 1 Air Channel 6 First Air Channel Switching Section 7 Second Air Channel Switching Section 8 Adsorbent 9 Heat Source Machine 10 Adsorption Section 11 Air Compressor 15 Adsorption Control Circuit 20 Regeneration Control Circuit 25 Timer Circuit 26 Operating Circuit 27 Reset Circuit 31 First air passage opening / closing portion 32 Second air passage opening / closing portion 33 Pressure reducer

Claims (4)

[Claims] 1. An adsorbing section having an adsorbent and a heat source unit arranged in an air passage, and an air compressor for sending air to the adsorbing section.
A first air passage switching unit that takes in air to the adsorption unit, a second air passage switching unit that takes out air from the adsorption unit, the heat source device, the air compressor, the first and the second air passage units in an adsorption process. A suction control circuit for controlling the operation of the air passage switching unit of 2;
A regeneration control circuit that controls the operations of the heat source device, the air compressor, and the first and second air passage switching units in a regeneration step; and a timer circuit that sends a signal at preset predetermined times. A dry dehumidifier comprising: an operation circuit that alternately sends an on / off signal to the adsorption control circuit and the regeneration control circuit each time the signal from the timer circuit is received. 2. An adsorbing part having an adsorbent and a heat source device arranged in the air passage, and an air compressor for sending air to the adsorbing part.
A pressure reducer for extracting air from the adsorption unit, a first air passage switching unit for introducing air into the adsorption unit, a second air passage switching unit for extracting air from the adsorption unit, and an upstream side of the adsorption unit. A first air passage opening / closing portion that opens and closes the air passage, a second air passage opening and closing portion that opens and closes an air passage on the downstream side of the adsorption portion, the heat source device, the air compressor, and the decompression in the adsorption step. Machine and the first
And a second air passage switching unit, an adsorption control circuit for controlling the operations of the first and second air passage opening / closing units, the heat source device, the air compressor, the decompressor, and the first device in a regeneration step. And a reproduction control circuit for controlling the operations of the second air passage switching unit and the first and second air passage opening / closing units, and a timer circuit for sending out a signal at preset predetermined times,
A dry dehumidification device comprising: an operation circuit that alternately sends an on / off signal to the adsorption control circuit and the regeneration control circuit each time a signal from the timer circuit is received. 3. The dry dehumidifying device according to claim 1, wherein the adsorbing portion is integrally formed with the adsorbent and the heat source device. 4. The dry dehumidifier according to claim 1, further comprising a reset circuit for sending a reset signal to the operation circuit so as to send a signal to the regeneration control circuit at the start of operation.