JPH06320A - Dry dehumidifier - Google Patents

Abstract

PURPOSE:To provide a dry dehumidifier where a moisture content at the outlet of the dehumidifier is decreased by making the face angle part whose adsorptive capacity is lowered a purge zone for cooling a rotor and further separating the purge zone from a dehumidifying treatment zone. CONSTITUTION:A rotor 11 consisting of a honeycomb dehumidifying material is turned around its center axis and during the rotation of the rotor 11, air to be treated is passed through a dehumidifying zone 11a for adsorbing and dehumidifying a moisture content in the air to be treated, a regenerating treatment zone 11b for desorbing the moisture content adsorbed by the rotor and a purge zone 11c for cooling the rotor in this order. The central angles of the purge zone 11c and the regenerating treatment zone 11b are 10-40 deg. and 60-120 deg. respectively and the remaining part is the dehumidifying treatment zone 11a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry dehumidifying device utilizing the adsorption / desorption action of moisture on a honeycomb dehumidifying rotor.

[0002]

2. Description of the Related Art There is a dry dehumidifier as a device for dehumidifying moisture contained in air and supplying it as dry air to a use environment. This dry dehumidifier is a device that utilizes the moisture adsorption capacity of the dehumidifying material and removes the moisture contained in the air to bring it into contact with air to dehumidify it.It is widely used from low humidity to high humidity. ing.

FIG. 4 is a block diagram showing the basic construction of a conventional dry dehumidifying device. The dehumidified air 1 is a dehumidifying rotor 8 formed of a honeycomb adsorbent by a treatment blower 2.
Is sent to the dehumidifying zone 8a. As the dehumidified air 1 passes through the dehumidification zone 8a, the dehumidified air 1 is dehumidified and its temperature is reduced, and the dehumidified air 3 is supplied to the air clean chamber or the like.

On the other hand, the dehumidifying rotor 8 after absorbing moisture moves to the regeneration processing zone 8b by its rotation. Reproduction blower 5
The regeneration outside air 4 sent to the dehumidification rotor 8 by the above is heated by the regeneration heater 6 and then passes through the regeneration treatment zone 8 b of the dehumidification rotor 8. Therefore, after the moisture adsorbed by the dehumidifying rotor 8 is desorbed in the dehumidifying zone 8a, the air is discharged outside the system as the regeneration exhaust 7. Then, the dehumidified dehumidifying rotor 8 moves to the dehumidifying zone 8a again to dehumidify the dehumidified air 1.

FIG. 5 shows an example of surface division of each processing zone of the dehumidifying rotor 8. As shown in FIG. 5, for example, the dehumidification treatment zone 8a has a central angle of 270 ° and the regeneration treatment zone 8b has a center angle of 270 °.
Is a region with a central angle of 90 °.

FIG. 6 shows an example of dehumidifying performance characteristics of the dry dehumidifying device constructed as described above, where the treatment inlet air temperature is 25 ° C.
The case will be shown. That is, in FIG. 6, the horizontal axis represents the absolute humidity of the processing inlet air, and the vertical axis represents the absolute humidity of the processing outlet air.

Further, FIG. 7 shows the absolute temperature of the process outlet air of the dehumidifying rotor 8 with respect to the surface angle of the dehumidifying process zone when the absolute temperature of the process inlet air is 8 g / kg 'in the above dehumidifying performance characteristics. The surface angle of the dehumidification treatment zone is 0 ° immediately after passing through the regeneration treatment zone 8b, and 270 ° immediately before entering the regeneration treatment zone 8b.

As shown in FIG. 6, the conventional dry dehumidifier has a dehumidifying action in a wide range from a low humidity region to a high humidity region, but as shown in FIG. There is a difference in the amount of water in the outlet depending on the angle. That is,
Dehumidifying rotor 8 immediately after coming out from the regeneration processing zone 8b
The dehumidifying material has a high temperature due to the heating effect of the passage of the regenerated air, and thus the adsorption capacity is reduced. After that, as the dehumidifying rotor 8 advances in the dehumidifying treatment zone 8a, the dehumidifying rotor 8 is cooled by the treatment inlet air and the surface angle is about 45.
At the position of °, it has the best dehumidification capacity. Next, the dehumidifying performance gradually decreases as the adsorbed moisture of the dehumidifying material forming the dehumidifying rotor 8 accumulates. By the way, in this case, the outlet water content shown in FIG. 6 is the sum of the water content that has passed through all the surface angles from 0 ° to 270 °, and the adsorption capacity is reduced and the excellent adsorption capacity is obtained. The dehumidified air is discharged from the rotor in a state in which the moisture that has passed through the portion having is mixed. Therefore, the part where the adsorption capacity is lowered adversely affects the entire dehumidification capacity.

[0009]

As described above, in the conventional dry dehumidifying device, the surface angle at which the adsorption capacity is lowered immediately after leaving the regeneration processing zone is also used as the dehumidifying treatment zone. There is a problem that the amount of moisture at the outlet is affected by the high amount of moisture and the effect of reducing humidity is not sufficiently exerted.

The present invention has been made in view of the above problems, and a face angle portion having a reduced adsorption capacity is used as a purge zone for cooling the rotor, and the purge zone is separated from the dehumidification treatment zone. Accordingly, it is an object of the present invention to provide a dry dehumidifying device capable of reducing the amount of moisture at the outlet of the dehumidifying device.

[0011]

A dry dehumidifying apparatus according to the present invention rotates a rotor made of a honeycomb dehumidifying material around its central axis, and while the rotor is rotating, removes water in dehumidified air. In the dry dehumidification device that passes through at least three zones in this order, a dehumidification treatment zone for adsorption and dehumidification, a regeneration treatment zone for desorbing moisture adsorbed by the rotor, and a purge zone for cooling the rotor, in the center of the purge zone. It is characterized in that the angle is 10 to 40 °, the central angle of the regeneration treatment zone is 60 to 120 °, and the remaining portion is the dehumidification treatment zone.

[0012]

In the present invention, the portion of the dehumidifying material having a high temperature and a reduced dehumidifying ability immediately after the regeneration outlet is separated from the dehumidifying treatment zone by the heating action by passage of the regenerating air as a purge zone. As a result, the high-humidity water content does not mix with the dry-air water content after passing through the dehumidification treatment zone, so that the dehumidifier outlet dry air water content can be reduced.

In the present invention, the purge zone is set at a central angle of 10 to 40 ° and the regeneration zone is set at 60 to 120 °. The reason for limiting the surface angle will be described below.

In the purge zone, the surface angle is 45 °.
Although the outlet air temperature was 80 ° C. or higher at the above location, as shown in FIG. 7, the outlet air humidity was sufficiently reduced and the dehumidification performance was high. Therefore, from the viewpoint of preventing the dehumidifying performance from deteriorating due to the high temperature of the dehumidifying rotor, the center angle is 90
Providing a purge zone of ° results in excessive purging. The range of an appropriate purge zone is 10 to 40 ° in the case of dehumidification in a low humidity range. If the central angle of the purge zone is less than 10 °, the dehumidification rotor will enter the dehumidification treatment zone at a relatively high temperature, and the dehumidification performance will deteriorate. On the other hand, the central angle of the purge zone is 4
Above 0 °, if the humidity of the dehumidified air is low,
The area of the purge zone through which the purge gas having a humidity higher than that of the dehumidification-treated air flows is too wide, and the contamination of the rotor by the purge gas cannot be ignored. As a result, even if moisture is sufficiently desorbed from the rotor in the regeneration treatment zone, the rotor that has entered the dehumidification treatment zone is in a state of containing moisture due to contamination by the purge gas, and the dehumidification performance deteriorates. Further, the area of the dehumidification treatment zone becomes too small, and the passing air velocity of the dehumidified air increases, so that the amount of air moisture after passing through the dehumidification treatment zone increases overall. Therefore, the central angle of the purge zone is 10 to 40 °.

Further, the regeneration treatment zone is an area for performing heat regeneration of the moisture-absorbed rotor. If the central angle of this regeneration treatment zone is less than 60 °, the rotor cannot be regenerated sufficiently. However, the dehumidification performance is deteriorated. On the other hand, if the central angle of the regeneration processing zone exceeds 120 °,
The area of the dehumidification treatment zone is relatively narrowed, and the dehumidification treatment capacity is reduced. Therefore, the central angle of the regeneration processing zone is set to 60 to 120 °. The central angle of the dehumidification zone is the remaining area of each of these zones.

[0016]

Embodiments of the dry dehumidifier according to the present invention and performance characteristics of the dehumidifier will be described below.

FIG. 1 is a block diagram showing a dry dehumidifier according to an embodiment of the present invention. FIG. 2 is a schematic view showing a division mode of the rotor. The rotor 11 is a dehumidification treatment zone 11
a, a regeneration treatment zone 11b, and a purge zone 11c. As shown in FIG. 2, the dehumidification treatment zone 11a has a central angle of 240 °, the regeneration treatment zone has a central angle of 90 °, and the purge zone 11c has a central angle of 30 °. The central angle of each of these zones may be appropriately set within the appropriate range described above in consideration of the processing amount and the like.

The air to be dehumidified is sent to the dehumidification processing zone 11a by the processing blower 12. The air that has passed through the dehumidification processing zone 11a is adsorbed and removed by the rotor 11 to be supplied under a predetermined use environment.

On the other hand, the outside air for regeneration is sent to the purge zone 11c by the regeneration blower 13. This outside air for regeneration cools the rotor 11 by passing through the purge zone 11c, takes away the heat retained by the rotor, and becomes heated regeneration air, which is sent to the regeneration heater 14. The regeneration air is reheated by the regeneration heater 14, becomes high temperature air, and is sent to the regeneration treatment zone 11b. The air that has passed through the regeneration processing zone 11b desorbs the moisture adsorbed by the rotor 11 to become humid air and is exhausted to the outside of the machine.

In this embodiment, as described above, the rotor 11 is configured to enter the purge zone 11c immediately after passing through the regeneration processing zone 11b.
Treatment zone 1 with dehumidification performance degraded due to high temperature
It is possible to avoid entering 1a and reduce the moisture content at the outlet of the dehumidifier.

Further, by using the air that has passed through the purge zone 11c as a part or the whole amount of the regeneration air, it is possible to send the air whose temperature is higher than that of the normal outside air to the heater 14, and the regeneration heating heater. It is possible to reduce the capacity of 14 and save energy.

FIG. 3 shows the dehumidifying performance characteristics of the dry dehumidifying apparatus according to this embodiment when the treatment inlet temperature is 25 ° C. As can be seen by comparing FIG. 3 with FIG. 6, when the absolute humidity at the processing inlet is 2 g / kg ′, the absolute humidity at the processing outlet of this embodiment is about 70% of that of the comparative example.
When the processing inlet absolute humidity is 15 g / kg ', it is about 80%, which shows the effect of reducing the absolute humidity at the processing outlet. The dehumidification efficiency (absolute humidity difference between dehumidifier inlet and outlet / dehumidifier inlet absolute humidity x 100) is about 10% when the treatment inlet absolute humidity is 2g / kg ', and the treatment inlet absolute humidity is 15g / k.
About 20% increase when g '.

[0023]

According to the present invention, a purge zone is provided,
By properly setting the surface angle of this purge zone, it is possible to separate from the dehumidification processing zone the surface angle portion where the adsorption capacity has decreased immediately after passing through the regeneration processing zone.
The amount of water in the air at the outlet of the dehumidifier can be reduced, and the dehumidification efficiency can be improved.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a manner of dividing the surface angle of the rotor.

FIG. 3 is a graph showing the absolute humidity of air at the processing outlet showing the effect of the present embodiment.

FIG. 4 is a block diagram showing a conventional dry dehumidifier.

FIG. 5 is a diagram showing a manner of dividing the surface angle of the rotor.

FIG. 6 is a graph showing the processing outlet air absolute humidity.

[Explanation of symbols]

 11; rotor 11a; dehumidification treatment zone 11b; regeneration treatment zone 11c; purge zone 12, 13; blower 14; heater

[Procedure amendment]

[Submission date] February 17, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

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

FIG. 2 is a diagram showing a manner of dividing the surface angle of the rotor.

FIG. 3 is a graph showing the absolute humidity of air at the processing outlet showing the effect of the present embodiment.

FIG. 4 is a block diagram showing a conventional dry dehumidifier.

FIG. 5 is a diagram showing a manner of dividing the surface angle of the rotor.

FIG. 6 is a graph showing the absolute humidity of the treatment outlet air when the treatment inlet air temperature is 25 ° C.

[FIG. 7] Similarly, the absolute humidity of the processing inlet air is 8 g / k.
It is a graph which shows the process outlet air absolute humidity in the case of g '.
It ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 17, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

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

FIG. 2 is a diagram showing a manner of dividing the surface angle of the rotor.

FIG. 3 is a graph showing the absolute humidity of air at the processing outlet showing the effect of the present embodiment.

FIG. 4 is a block diagram showing a conventional dry dehumidifier.

FIG. 5 is a diagram showing a manner of dividing the surface angle of the rotor.

FIG. 6 is a graph showing a processing outlet air absolute humidity when the processing inlet air temperature is 25 ° C.

[FIG. 7] Similarly, the absolute humidity of the processing inlet air is 8 g / k.
It is a graph which shows the process outlet air absolute humidity in the case of g '.

[Explanation of symbols] 11; rotor 11a; dehumidification treatment zone 11b: Regeneration processing zone 11c; Purge zone 12, 13; Blower 14; heater

Claims (2)

[Claims] 1. A rotor made of a honeycomb dehumidifying material is rotated about its central axis, and while the rotor is rotating,
A dehumidification treatment zone that adsorbs and dehumidifies the moisture in the dehumidified air,
In a dry dehumidifier that passes through at least three zones, a regeneration zone for desorbing water adsorbed by the rotor and a purge zone for cooling the rotor, in this order, a central angle of the purge zone is 10 to 40 ° A dry dehumidification device, wherein the central angle of the treatment zone is 60 to 120 °, and the remaining portion is the dehumidification treatment zone. 2. The dry dehumidifier according to claim 1, wherein a part or all of the air passing through the purge zone is used as regeneration air to be supplied to the regeneration treatment zone.