JP2001205037A - Dry type dehumidification apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry type dehumidification apparatus capable of easily and stably obtaining low humidity air with a low dew point of -20 deg.C or lower without enlarging a dehumidification rotor. SOLUTION: This dry type dehumidification apparatus comprises a honeycomb type dehumidification rotor 1 and an operation means for rotating the dehumidification rotor 1 around the center axis. The rotating passage regions of the dehumidification rotor 1 is divided successively to a first dehumidification zone 1a, a first regeneration zone 1b, a second dehumidification zone 1c, and a second regeneration zone 1d. Air to be treated is passed successively through the first dehumidification zone 1a and the second dehumidification zone 1c to dehumidify the air and further, air for regeneration is heated and then passed successively through the first regeneration zone 1b and the second regeneration zone 1d to regenerate the dehumidification rotor 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry dehumidifier having a rotary dehumidifier, and more particularly to a low dew point dry dehumidifier for dehumidifying indoor air.

[0002]

2. Description of the Related Art Conventionally, this type of dry dehumidifier is disclosed in
What is described in -155248 is known.

Hereinafter, the dry dehumidifier will be described with reference to FIG.

As shown in the figure, a honeycomb-shaped dehumidifying rotor 11 is driven to rotate about a central axis of the dehumidifying rotor 11 by a driving means 17, and a rotation passage area of the dehumidifying rotor 11 is in a dehumidifying zone 11a. It is divided into zones 11b. The processing air is blown to the dehumidification processing zone 11a by the processing air blower 12 to perform dehumidification. The regeneration air is fed into the regeneration heater 14 by the regeneration air blower 13, heated by the regeneration heater 14, and then ventilated to the regeneration zone 11 b to remove the dehumidifying rotor 1.
1 is reproduced.

[0005]

In such a conventional dry dehumidifier, in order to obtain low-humidity dry air having a dew point temperature of −20 ° C. or less, it is necessary to reduce the flow rate of the processing air passed through the dehumidifier rotor 11. Alternatively, it is necessary to lengthen the length of the dehumidifying rotor 11 in the ventilation direction, and the like. In order to dehumidify the processing air having the set air volume, the dehumidifying rotor 11 becomes large, and accordingly, the entire apparatus becomes large and the cost increases. Therefore, there is a demand for a small and inexpensive device as a whole.

The present invention solves such a conventional problem, and provides a dry dehumidifier capable of obtaining low-humidity air having a dew point temperature of −20 ° C. or less without increasing the size of the dehumidifier rotor. The purpose is to:

[0007]

In order to achieve the above object, a dry dehumidifying apparatus according to the present invention has at least a first passage for rotating a dehumidification rotor, a first regeneration zone, a second regeneration zone, and a second dehumidification zone. The second regeneration processing zone is divided in this order, and the processing air is passed from the first dehumidification processing zone to the second dehumidification processing zone in order to introduce the processing air for dehumidification and the first regeneration after heating the regeneration processing air. It is configured to have an air introduction means for regeneration processing for regenerating the dehumidifying rotor by ventilating the processing zone and the second regeneration processing zone.

According to the present invention, there is provided a dry dehumidifier capable of obtaining low-humidity air having a dew point of −20 ° C. or less without increasing the size of the dehumidifying rotor.

In another aspect, a purge zone is provided at a boundary between the dehumidification processing zone and the regeneration processing zone in the rotor rotation passage area, and the first dehumidification processing zone, the first regeneration processing zone, the first purge zone, and the second purge zone are provided. The dehumidification zone, the second regeneration zone, and the second purge zone are divided in this order, and the processing air is passed from the first dehumidification zone to the second dehumidification zone to perform dehumidification. After the ventilated air is passed through the purge zone and the second purge zone, and the ventilated air is heated, the air is passed through the first regeneration processing zone and the second regeneration processing zone to regenerate the dehumidifying rotor.

According to the present invention, a dry dehumidifier capable of obtaining low-humidity air having a dew point of −20 ° C. or less without increasing the size of the dehumidifying rotor is obtained.

Further, another means is provided with a cooling means for cooling the processing air in advance, and the processing air cooled by the cooling means is passed through the first dehumidification processing zone to the second dehumidification processing zone in order to dehumidify. It is configured.

According to the present invention, there is provided a dry dehumidifier capable of obtaining low-humidity air having a dew point of −20 ° C. or less without increasing the size of the dehumidifying rotor.

Another means is provided with cooling means for cooling the air ventilated to the first dehumidification processing zone. After the processing air is ventilated to the first dehumidification processing zone, the cooling means cools the processing air. And the second dehumidifying zone is ventilated to dehumidify.

According to the present invention, a dry dehumidifier capable of obtaining low-humidity air having a dew point of −20 ° C. or less without increasing the size of the dehumidifying rotor is obtained.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a honeycomb-shaped dehumidification rotor, a driving means for driving the dehumidification rotor to rotate about its central axis, a rotation passage of the dehumidification rotor at least in a first dehumidification zone and a first regeneration. A treatment air introduction unit for dividing the treatment zone, the second dehumidification treatment zone, and the second regeneration treatment zone in order, and allowing the treatment air to flow from the first dehumidification treatment zone to the second dehumidification treatment zone to dehumidify; The apparatus has a means for introducing regeneration air for regenerating the dehumidification rotor by heating the air and then passing the air through the first regeneration processing zone and the second regeneration processing zone, so that the dew point temperature can be increased without increasing the size of the dehumidification rotor. It has the effect of obtaining low humidity air at -20 ° C or less.

A first purge zone is provided at a boundary between the first regeneration processing zone and the second dehumidification processing zone, and a second purge zone is provided at a boundary between the second regeneration processing zone and the first dehumidification processing zone. After a part of the air is passed through the first purge zone and the second purge zone to heat the ventilated air, the air is passed through the first regeneration processing zone and the second regeneration processing zone to regenerate the dehumidifying rotor. The dehumidification is performed by passing the processing air in order from the first dehumidification processing zone to the second dehumidification processing zone, and obtaining low-humidity air having a dew point temperature of −20 ° C. or less without increasing the size of the dehumidification rotor. It has the action of:

Also, a cooling means for processing air for pre-cooling the processing air is provided, and after the processing air is cooled, the air is passed through the first dehumidification processing zone to the second dehumidification processing zone in order to dehumidify the air. This has the effect of obtaining low-humidity air with a dew point temperature of −20 ° C. or less without increasing the size of the dehumidifying rotor.

Further, an air cooling means after the first dehumidification process is provided for ventilating the first dehumidification process zone and cooling the dehumidified process air, and the process air cooled after the first dehumidification process zone is cooled. It is configured to dehumidify by ventilating the second dehumidification processing zone, and has the effect of obtaining low-humidity air with a dew point temperature of −20 ° C. or less without increasing the size of the dehumidification rotor.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0020]

(Embodiment 1) As shown in FIGS. 1 and 2, the dehumidifying rotor 1 includes a first dehumidifying zone 1a, a first regeneration zone 1b, a second dehumidifying zone 1c, and a second regeneration zone 1d. It is divided into four parts. The center angle of the first dehumidification zone 1a and the second dehumidification zone 1c is, for example, 135 °.
The center angle of the first reproduction processing zone 1b and the second reproduction processing zone 1d is set to, for example, 45 °.
The center angle of each processing zone can be appropriately set to an appropriate center angle by setting the processing air volume, the reproduction air volume, and the like.

The processing air to be dehumidified is a processing air blower 2
Is sent to the first dehumidification processing zone 1a to be dehumidified. Then, the processing air that has passed through the first dehumidification processing zone 1a is sent to the second dehumidification processing zone 1c and dehumidified again. Processed air after dehumidification processing is in environmental test room (not shown)
Is supplied to the use space of dry air.

On the other hand, the regeneration air is sent to the regeneration heater 4 by the regeneration air blower 3, and after being heated by the regeneration heater 4, the first regeneration zone 1b
And the second regeneration processing zone 1d. Then, in the first regeneration processing zone 1b and the second regeneration processing zone 1d, the dehumidifying rotor 1 is heated by the heated regeneration processing air, and the adsorbed moisture is desorbed. The air for regeneration processing ventilated to the first regeneration processing zone 1b and the second regeneration processing zone 1d is discharged into the atmosphere.

The dehumidification rotor 1 is driven to rotate about the central axis of the dehumidification rotor 1 by the driving means 7 so that the processing air is continuously dehumidified in the first dehumidification zone 1a and the second dehumidification zone 1b. Then, the regeneration of the dehumidifying rotor 1 is continuously performed in the first regeneration treatment zone 1b and the second regeneration treatment zone 1d by the regeneration treatment air. The rotation speed of the dehumidifying rotor 1 is determined in accordance with the humidity at the inlet of the processing air, the processing air volume, the regeneration air volume, etc., so that the dew point temperature of the processing air after passing through the second dehumidification processing zone becomes the minimum. Speed can be selected.

In the above configuration, the dehumidification rotor 1 rotates so as to pass through the first dehumidification zone 1a, the first regeneration zone 1b, the second dehumidification zone 1c, and the second regeneration zone 1d in this order. And the first dehumidification zone 1a
First, the moisture in the processing air is adsorbed and removed to perform dehumidification.
Next, the dehumidifying rotor 1 rotates and moves to the first regeneration processing zone 1b, and the regeneration processing air heated by the regeneration heater 4 passes through the dehumidification rotor 1 to desorb moisture adsorbed on the dehumidification rotor 1.
Then, the regeneration processing is performed in the first regeneration processing zone 1b, and the high-humidity regeneration processing air is exhausted to the atmosphere.

The dehumidification rotor 1 sufficiently desorbed in the first regeneration processing zone 1b then rotates to the second dehumidification processing zone 1c, and the low-humidity processing air dehumidified in the first dehumidification processing zone 1a is ventilated. The treated air is further dehumidified, and the treated air is further dehumidified to a lower humidity, and then supplied to the use space of the dry air.

Next, the dehumidifying rotor 1 is rotated and moved to the second regenerating zone 1d, the regenerating air heated by the regenerating heater 4 is ventilated, and the moisture adsorbed on the dehumidifying rotor 1 is desorbed. The high-humidity regeneration air that has undergone the regeneration in the second regeneration zone 1d is exhausted to the atmosphere.

As described above, since each regeneration processing zone is provided in the zone immediately before the dehumidification rotor 1 rotates to each dehumidification processing zone, the moisture of the dehumidification rotor 1 is sufficiently desorbed in each regeneration processing zone. In the dehumidified state, the moisture of the processing air is efficiently adsorbed and dehumidified because it moves to each dehumidification processing zone, and the processing air is passed twice through the dehumidification rotor 1 during one rotation of the dehumidification rotor 1 to perform dehumidification. Low-humidity air with a dew point temperature of −20 ° C. or less can be easily and stably obtained without increasing the size of the rotor.

(Embodiment 2) The same parts as those in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 3 and 4, a first purge zone 1e is provided at the boundary between the first regeneration zone 1b and the second dehumidification zone 1c, and the second regeneration zone 1d and the first dehumidification zone are provided. A second purge zone 1f is provided at the boundary of 1a. The first dehumidification zone 1a and the second dehumidification zone 1c have a central angle of, for example, 108 °, the first regeneration zone 1b and the second regeneration zone 1d have a central angle of, for example, 36 °, and the first purge zone 1e and the second Purge zone 1
f has a central angle set to, for example, 36 °. In addition,
The center angle of each processing zone can be appropriately set to an appropriate center angle by setting the processing air volume, the reproduction air volume, and the like.

In the above configuration, a part of the processing air is diverted as air for regeneration processing, and the first purge zone 1e and the second
Ventilation to the purge zone 1f cools the dehumidification rotor 1 moved from each regeneration processing zone, and the temperature of the regeneration processing air ventilated to each purge zone is increased by heat transfer from the dehumidification rotor 1.

Next, after the dehumidification rotor 1 is cooled in each purge zone, it is rotated and moved to each dehumidification processing zone to adsorb and remove the moisture in the processing air. Since it is not adjacent to each regeneration processing zone, high-temperature and high-humidity regeneration processing air can be prevented from being mixed into each dehumidification processing zone, and the dehumidification efficiency of the dehumidification rotor 1 can be increased.

On the other hand, the air for regeneration processing is sent to the regeneration heaters 4a and 4b after passing through each purge zone. Since the temperature is raised in each purge zone, the heat quantity of the regeneration heaters 4a and 4b is reduced by about It can be reduced by 30%.

In this embodiment, the first purge zone 1e
Alternatively, the regeneration processing air that has passed through the second purge zone 1f may be combined, and the regeneration processing air may be heated using one regeneration heater, and the effect is not changed.

(Embodiment 3) The same parts as those in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 5, a cooler 5 for pre-cooling the processing air is provided. After the processing air is cooled by the cooler 5, the air is sent to the first dehumidification processing zone 1a.

According to the above configuration, the processing air is cooled in the cooler 5 before being passed through the first dehumidification processing zone, so that the lower the temperature of the processing air, the higher the adsorption removal rate of the dehumidification rotor 1 is. The properties can be utilized, and processing air with low humidity can be stably obtained.

(Embodiment 4) The same parts as those in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 6, the first dehumidifying zone 1a
After providing the air cooler 6 after the first dehumidification processing that cools the processing air that has been passed through, and cooling the processing air that has been ventilated to the first dehumidification processing zone 1a by the air cooler 6 after the first dehumidification processing, It is sent to the second dehumidification zone 1c.

With the above configuration, the first dehumidifying zone 1a
The temperature of the processed air that has been passed through is increased by the heat transfer from the dehumidifying rotor 1 and the heat of adsorption generated at the time of the adsorption reaction of the dehumidifying rotor 1, but the air is cooled in the air cooler 6 after the first dehumidifying process. This makes it possible to utilize the property of the dehumidifying rotor 1 that the adsorption removal rate of the dehumidifying rotor 1 increases as the temperature of the processing air decreases, and it is possible to stably obtain low-humidity processing air.

[0040]

According to the present invention, at least a first dehumidification zone, a first regeneration zone, a second dehumidification zone, and a second regeneration zone are provided in the rotor rotation passage area, and the dehumidification rotor is provided in each dehumidification zone. Immediately before rotating and moving, each regeneration processing zone is installed, so that the moisture in the processing air is efficiently moved to each dehumidification processing zone in a state where the moisture of the dehumidification rotor is sufficiently desorbed in each regeneration processing zone. Adsorption and dehumidification, and processing air is passed through the dehumidification rotor twice while the dehumidification rotor rotates once, and low humidity air with a dew point temperature of -20 ° C or less can be easily formed without increasing the size of the dehumidification rotor for dehumidification. It can be obtained stably.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a dry dehumidifier according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing a zone division state of a dehumidification rotor of the dry dehumidification apparatus.

FIG. 3 is a block diagram showing a dry dehumidifier according to the second embodiment.

FIG. 4 is a schematic diagram showing a zone division state of a dehumidification rotor of the dry dehumidification device.

FIG. 5 is a block diagram showing a dry dehumidifier according to the third embodiment.

FIG. 6 is a block diagram showing a dry dehumidifier according to Embodiment 4.

FIG. 7 is a schematic diagram of a conventional dry dehumidifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dehumidification rotor 1a 1st dehumidification treatment zone 1b 1st regeneration treatment zone 1c 2nd dehumidification treatment zone 1d 2nd regeneration treatment zone 1e 1st purge zone 1f 2nd purge zone 2 Blower for process air 3, 3a, 3b For regeneration treatment Air blower 4, 4a, 4b Regeneration heater 5 Cooler 6 Air cooler 7 Driving means

Claims (4)

[Claims] 1. A honeycomb-shaped dehumidification rotor, driving means for driving the dehumidification rotor to rotate about its central axis, and a rotation passage area of the dehumidification rotor at least in a first dehumidification processing zone and a first regeneration processing zone. The second dehumidification zone and the second regeneration zone are divided in this order, and the processing air is divided into the first and second regeneration zones.
Processing air introducing means for passing air from the dehumidification processing zone to the second dehumidification processing zone in order to dehumidify the air; and heating the air for the regeneration processing and then passing the air to the first regeneration processing zone and the second regeneration processing zone to perform the dehumidification. A dry dehumidifier comprising a regeneration air introduction means for regenerating a rotor. 2. A first purge zone is provided at a boundary between the first regeneration processing zone and the second dehumidification processing zone, and a second purge zone is provided at a boundary between the second regeneration processing zone and the first dehumidification processing zone. Is provided, and a part of the processing air is passed through the first purge zone and the second purge zone. After the ventilated air is heated, the air is passed through the first regeneration processing zone and the second regeneration zone. The dry dehumidification apparatus according to claim 1, wherein the dehumidification rotor is regenerated by regenerating the dehumidification rotor. 3. The dry dehumidifier according to claim 1, further comprising cooling means for pre-cooling the processing air. 4. The dry dehumidifier according to claim 1, further comprising an air cooling unit after the first dehumidification processing for cooling the processing air passed through the first dehumidification processing zone.