JP2002052308A - Dehumidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adsorption type dehumidifier capable of exhibiting high dehumidifying performance without installing a precooler and an intercooler thereto. SOLUTION: In the dehumidifier that pre-humidifies an introduced open air OA by guiding the air to an adsorbent layer X, majorly dehumidifies the open air A1, A3 which has been pre-humidified by guiding the air to the adsorbent layer X before pre-dehumidification and then cools the air SA after the major dehumidification by cooling means 16 to feed it to a low-humidification target zone 1, the dehumidifier has such a structure that the open air A3 is mixed with the cycled air RA from the low-humidification target zone 1, and the air after mixing is guided to the adsorbent layer X of the major dehumidification process as the major dehumidification target air MA1. Preferably, in the structure a part A2 of the open air A1 after pre-dehumidification is mixed with the introduced open air OA before the pre-dehumidification to guide the open air after mixing is guided to adsorbent layer X of the pre-dehumidification process as the pre-dehumidification target open air MA1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying apparatus used for forming a low humidity environment (low dew point environment) in an environmental test room or a manufacturing facility for articles that do not like the presence of moisture in the air. The introduced outside air is pre-dehumidified by ventilation to the adsorbent layer, and the outside air after the pre-dehumidification is mainly dehumidified by ventilation to the adsorbent layer before being used for the pre-dehumidification, and the air after the main dehumidification is cooled by cooling means. Then, the adsorbent layer used in the order of main dehumidification and pre-dehumidification is subjected to a regeneration treatment in which a high-temperature gas for regeneration is passed through the adsorbent layer. The present invention relates to a dehumidifying device to be reused.

[0002]

2. Description of the Related Art Conventionally, in this type of dehumidifier, the outside air after the pre-dehumidification, which has been heated by the heat of adsorption in the pre-dehumidification process, is cooled by an intermediate cooler and then passed through the adsorbent layer in the main dehumidification process. Thus, the adsorbent layer in the main dehumidification process is prevented from deteriorating in adsorbent performance due to a high temperature, and the required dehumidification performance is obtained (see, for example, Japanese Patent Application Laid-Open No. 6-343819).

[0003] In addition, the adsorbent layer used for pre-dehumidification following the main dehumidification is made to adsorb as efficiently as possible to enhance the dehumidification performance. It has also been practiced to ventilate the adsorbent layer during the dehumidification process.

[0004]

However, in the conventional apparatus provided with the intercooler and the precooler as described above, a refrigerator or a cooling tower for supplying a low-temperature heat medium for cooling to the intercooler or the precooler is provided. A cold heat source device that supplies a low-temperature heat medium for cooling to cooling means (that is, a post-cooler) that cools air after main dehumidification supplied to the area to be reduced in humidity. Even if the chiller is also used for the intercooler and the precooler, the cooling and heat source device must have a large capacity for the dual purpose, so the overall equipment cost and operation cost are high and the equipment configuration is large. Thus, there is a problem that a large space is required for installing the entire apparatus.

[0005] In view of this situation, the main problems of the present invention are:
The problem is to solve the above problem effectively by rational improvement.

[0006]

Means for Solving the Problems [1] In the invention according to claim 1, the introduced outside air is pre-dehumidified by ventilating the adsorbent layer,
The outside air after the pre-dehumidification is mainly dehumidified by ventilation to the adsorbent layer before being used for the pre-dehumidification, and the air after the main dehumidification is cooled by cooling means and supplied to a low-humidification target area. The adsorbent layer used in the order of dehumidification and the pre-dehumidification, through a regeneration process of passing a high-temperature gas for regeneration through the adsorbent layer,
In the dehumidifying device to be reused in the order of the main dehumidification and the pre-dehumidification, the return air from the dehumidification target area is mixed with the outside air after the pre-dehumidification, and the air after the mixing is used as the main dehumidification target air. It is configured to ventilate the adsorbent layer in the main dehumidification process.

In other words, according to this configuration, the required dehumidified state is maintained by supplying the air after the main dehumidification cooled by the cooling means, and the low-temperature return air from the dehumidification target area for suppressing an increase in the area temperature is foreseen. By mixing with the outside air after dehumidification and making the mixed air the target air for main dehumidification, only the outside air after pre-dehumidification, which is heated by the heat of adsorption in the pre-dehumidification process, becomes the target air for main dehumidification. In comparison, the temperature of the main dehumidification target air passing through the adsorbent layer in the main dehumidification process can be effectively reduced in a form in which the retained cold of the return air from the target region for dehumidification is effectively used.

By effectively lowering the temperature of the main dehumidification target air, the adsorbent layer in the main dehumidification process can be effectively cooled, and its adsorption performance (ie, main dehumidification performance) can be effectively improved. In addition, the adsorbent layer in the main dehumidification process is efficiently cooled and stored, and the adsorbent layer is sent to the next pre-dehumidification process. Dehumidification performance) can also be effectively improved.

From the above, according to the above configuration, the above-mentioned intercooler and precooler are not required, and high dehumidification performance equal to or higher than that of the conventional apparatus having the intercooler and precooler is provided. In this way, it is possible to eliminate the need for an intercooler and a precooler, and to eliminate the need for a cold heat source device that supplies a low-temperature heat medium for cooling to the intercooler and the precooler. Compared with the apparatus, the entire apparatus cost and operation cost can be effectively reduced, and the space required for installing the entire apparatus can be effectively reduced by reducing the apparatus configuration.

[2] In the invention according to claim 2, claim 1
In the practice of the present invention, a part of the outside air after the pre-dehumidification is mixed with the introduced outside air before the pre-dehumidification, and the mixed outside air is set as the outside air to be subjected to the pre-dehumidification, and the adsorbent layer in the pre-humidification process is used. It is configured to ventilate.

In other words, according to this configuration, a part of the outside air after the pre-dehumidification, which is reduced in humidity by the pre-dehumidification as compared with the outside air before the pre-dehumidification, is mixed with the introduced outside air before the pre-dehumidification, and By setting the outside air as the target outside air for pre-dehumidification, compared to setting only the high-humidity introduction outside air before the pre-dehumidification as the target outside air for pre-dehumidification,
By setting the outside air to be subjected to the pre-dehumidification in a state of being diluted in the absolute humidity plane, the absolute humidity of the outside air to be subjected to the pre-dehumidification that passes through the adsorbent layer in the pre-humidification process can be reduced.

By reducing the humidity by dilution of the outside air to be pre-dehumidified, the temperature rise due to the heat of adsorption of the adsorbent layer in the pre-dehumidification process is moderated, and the adsorption performance enhanced by the cold heat storage in the main dehumidification process described above. (Pre-dehumidification performance) can be exhibited for a long period of time, whereby the state of storing and cooling heat in the main dehumidification process can be used more effectively, and the pre-dehumidification performance and thus the dehumidification performance of the entire apparatus can be more effectively improved. Especially in summer, when the absolute humidity of the introduced outside air before the pre-dehumidification becomes high (that is, the temperature rise of the adsorbent layer is promoted by the heat of adsorption), etc. Effects can be obtained.

In order to reduce the humidity of the outside air to be dehumidified,
Alternatively, a part of the air after main dehumidification and a part of the return air from the area to be dehumidified are mixed with the introduced outside air before pre-dehumidification, and the outside air after the mixing is used as the outside air to be pre-humidified However, in this case, not only the ventilation amount to the adsorbent layer in the pre-dehumidification process but also the ventilation amount to the adsorbent layer in the main dehumidification process increases, so that the pressure loss as a whole greatly increases. There is a problem that the power required for air conveyance is greatly increased. In this regard, the above-described configuration in which part of the outside air after the pre-humidification is mixed with the introduced outside air before the pre-humidification is more advantageous.

[3] In the invention according to claim 3, claim 2
In the embodiment of the present invention, there is provided an outside air circulation adjusting means for switching between a state of partially mixing the outside air after the pre-humidification with the introduced outside air and a state of stopping the outside air, or changing a mixing amount thereof.

That is, the above-mentioned low humidity of the outside air to be subjected to the pre-dehumidification, in which a part of the outside air after the pre-humidification is mixed with the introduced outside air before the pre-humidification, decreases the absolute humidity of the introduced outside air and decreases the adsorbent layer in the pre-humidification process. If the temperature rise due to the heat of adsorption does not progress so rapidly (particularly in winter, etc.), the effectiveness of the air is reduced. Accordingly, the required air conveyance power due to an increase in the amount of air flowing through the adsorbent layer in the pre-dehumidification process) becomes relatively conspicuous as a negative aspect in operating costs.

On the other hand, according to the above configuration, when the absolute humidity of the introduced outside air becomes low and the effectiveness of reducing the humidity of the outside air to be dehumidified becomes low, the outside air circulation adjusting means is provided.
By switching the operation state to a state in which the partial mixing of the outside air is stopped after the pre-dehumidification of the introduced outside air, or by changing the mixing amount to a lower side, the amount of ventilation to the adsorbent layer in the pre-dehumidification process is reduced. As a result, the power required for air conveyance can be reduced, and in the implementation of the invention according to claim 2, it is possible to effectively avoid an increase in operating costs due to waste of air conveyance power.

[4] In the invention according to claim 4, claim 1
In the implementation of the invention according to any one of the above-described embodiments, an adsorbing rotor in which the adsorbent layer is continuously arranged in a rotor rotation direction as a rotor constituent material is provided, and the main dehumidification target is provided in a rotation path of the adsorbing rotor. The main dehumidification area that ventilates air to the rotor part in the in-area passage process, the pre-dehumidification area in which the pre-dehumidification target outside air is ventilated to the rotor part in the in-area passage process, and the high-temperature regeneration gas to the rotor part in the in-area passage process. The ventilation processing areas to be ventilated are arranged in the rotor rotation direction in that order.

In other words, in this configuration, the main dehumidification is performed by the adsorbent layer of the rotor portion in the process of passing through the main dehumidification zone of one adsorption rotor having the adsorbent layer as a constituent material. On the other hand, the pre-dehumidification is performed by the adsorbent layer that is in the process of passing through the pre-dehumidification region that is located at a lower position in the rotor rotation direction (that is, the adsorbent layer that has been used for the main dehumidification).

Further, the adsorbent layer (that is, the adsorbent layer used for the pre-dehumidification) in the process of passing through the regeneration treatment area located in the rotor rotation direction on the lower side of the pre-dehumidification area is converted into a high-temperature gas for regeneration. Regeneration processing by the ventilation of, thereby, while performing the main dehumidification, pre-dehumidification and regeneration processing in one adsorption rotor in parallel, for the adsorbent layer of each part of the rotor, the same adsorbent layer with the rotation of the rotor, After the main dehumidification and the pre-dehumidification are used in this order, a regeneration process is performed, and then the main dehumidification and the pre-dehumidification are used again.

That is, according to this configuration, the adsorbent layer of each portion of the rotor is continuously shifted from the main dehumidifying zone to the pre-dehumidifying zone as the rotor rotates, so that the adsorbent layer in the main dehumidifying process described above is transferred to the adsorbent layer. The heat storage cold energy can be continuously brought into the pre-dehumidification area, so that the main dehumidification, the pre-dehumidification, and the regeneration processing are performed in parallel with, for example, a plurality of stationary adsorbent layers while the ventilation to the plurality of stationary adsorbent layers is performed. By switching the gas by the valve device, in a configuration in which each stationary adsorbent layer is used in the order of main dehumidification and pre-dehumidification again after the regeneration process, and then used in the order of main dehumidification and pre-dehumidification. Compared with the implementation of the invention according to item 1, fluctuations in the average temperature of the adsorbent layer in the pre-dehumidification process in the pre-dehumidification region are effectively suppressed, and the pre-dehumidification performance and, consequently, the dehumidification performance of the entire apparatus are stably improved. To demonstrate Can.

In the embodiment of the invention according to claim 4, for example, a purge processing area in which a purge gas flows through the rotor portion in the process of passing through the area between the regeneration processing area and the main dehumidification area in the rotor rotation direction. It is optional to provide another target area between each area in the rotor rotation direction in the rotation path of the suction rotor, such as providing

If the adsorbing rotor has a structure in which the adsorbent layer is continuously arranged in the direction of rotation of the rotor as a constituent material of the rotor, a disk-shaped rotor that allows gas to pass in the direction of the axis of rotation or a gas in the radial direction of rotation. Any structure may be used, such as a cylindrical rotor that allows the gas to pass through, or an endless belt-shaped rotor that allows gas to pass in a direction perpendicular to the belt surface.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes an article that dislikes the presence of moisture in the air (eg, electronic parts, chemicals, films, etc.).
This is a dry room as a low humidity target area in which the manufacturing operation is performed. The dry room 1 is supplied with ultra-low humidity air SA generated by the dehumidifier 2 using the suction rotor (for example,
By supplying the low-humidity air SA, the dry room 1 is maintained in a required low-humidity atmosphere (for example, an atmosphere with an absolute humidity of 0.07 g / kgDA).

The adsorbing rotor 3 of the dehumidifier 2 has a gas-permeable adsorbent layer X using an adsorbent such as silica gel, zeolite, activated carbon or the like as a rotor constituent material and is continuously arranged in the direction of rotor rotation. In the embodiment, as shown in FIG. 2, a disk-shaped suction rotor 3 that allows gas to pass in the direction of the rotor rotation axis P is used.

The rotation path of the adsorption rotor 3 is divided into four regions in the rotor rotation direction: a main dehumidification region 4, a pre-dehumidification region 5, a regeneration treatment region 6, and a purge treatment region 7.
Are arranged in the rotation direction of the rotor in the order described above, so that each part of the rotor shifts in the order of the main dehumidification area 4, the pre-dehumidification area 5, the regeneration processing area 6, and the purge processing area 7 with the rotation of the adsorption rotor 3. Let it.

In the main dehumidification area 4, the air MA1 to be subjected to the main dehumidification is passed through the rotor portion in the process of passing through the area (that is, the rotor portion having a high adsorbing ability of the adsorbent layer X after the regeneration treatment), whereby the air MA1 is ventilated. The air MA1 as the main dehumidification target is dehumidified (main dehumidification) by moisture adsorption by the adsorbent layer X of the rotor portion.
2 is passed in the same ventilation direction as that of the main dehumidifying zone 4 through the rotor portion in the process of passing through the region, so that the external air M to be pre-dehumidified is adsorbed by the moisture adsorbed by the remaining adsorbing capacity of the adsorbent layer X in the rotor portion.
A2 is dehumidified (pre-humidified).

In the regeneration processing zone 6 subsequent to the pre-dehumidification zone 5, the high-temperature gas for regeneration HA is passed through the rotor portion in the process of passing through the zone in the direction opposite to that of the main dehumidification zone 4 and the pre-dehumidification zone 5. In the main dehumidification zone 4 and the pre-dehumidification zone 5, the adsorbent layer X of the rotor portion that has adsorbed water is subjected to regeneration treatment by desorption of adsorbed moisture by the high-temperature regeneration gas HA, and in the purge treatment region 7 following the regeneration treatment region 6, By passing the purging gas PA through the rotor portion in the process of passing through the region in the same ventilation direction as the main dehumidifying region 4 and the pre-dehumidifying region 5, the adsorbent layer of the rotor portion is moved prior to the transition to the next main dehumidifying region 4. The high-temperature gas HA for regeneration remaining in X is eliminated, the adsorbent layer X in the rotor portion is cooled, and the remaining adsorbed moisture in the adsorbent layer X that has not been completely desorbed in the regeneration processing area 6 is desorbed. .

With respect to the configuration of the air path of the dehumidifying device 2, the pre-dehumidified outside air A 1 that is sent to the air path 8 after passing through the pre-dehumidifying area 5.
Is partially mixed with the outside air OA introduced from the outside air introduction passage 9 through the circulation air passage 10, and the mixed outside air OA.
A2 is sent to the pre-humidification area 5 through the air passage 11 as the pre-humidification target outside air MA2.

The partially circulating air passage 1 guided to the air passage 12
The return air RA from the dry room 1 guided by the return air passage 13 is mixed with the outside air A3 after the pre-dehumidification after a partial flow to 0, and the mixed air A3 and RA is subjected to main dehumidification through the air passage 14. Send it to the main dehumidification area 4 as air MA1,
The air SA after the main dehumidification sent from the main dehumidification area 4 to the air passage 15 is cooled to a predetermined temperature (for example, about 13 ° C.) by the post-cooler 16 (cooling means) and sent to the dry room 1. It is.

As for the purging gas PA, a part A4 of the pre-dehumidified outside air A3 is diverted from the air passage 12 and the diverted pre-dehumidified outside air A4 is purged through the air passage 17 as the purging gas PA. It is sent to the processing area 7.

That is, the supply of the main dehumidified air SA cooled by the post-cooler 16 maintains the required low-humidity state and suppresses the rise in room temperature. The low-temperature return air RA from the dry room 1 (for example, about 23 ° C.) Is mixed with the pre-dehumidified outside air A3 guided by the air passage 12, and the air after the mixing is used as the main dehumidification target air MA1, whereby the adsorbent layer X (main dehumidification area) in the main dehumidification process is obtained. 5, the main dehumidification target air MA1 that passes through the adsorbent layer of the rotor portion is cooled to a low temperature, thereby improving the adsorption performance of the adsorbent layer X in the main dehumidification process (that is, the main dehumidification performance). The adsorbent layer X in the form of storing cold energy in the adsorbent layer X in the dehumidification process
Is sent to the next pre-humidification region 5 so that the adsorption performance in the pre-humidification process (that is, the pre-humidification performance) is also increased.

Further, a part A2 of the outside air A1 after the pre-dehumidification, which has been made lower in humidity than the outside air OA, is introduced into the outside air OA before the pre-dehumidification.
And the outside air after the mixing is pre-humidified outside air MA2.
In this manner, the pre-dehumidification target outside air MA2 is diluted in the absolute humidity plane, and the pre-dehumidification target outside air that ventilates the adsorbent layer X (the adsorbent layer of the rotor portion in the pre-dehumidification area 5) in the pre-dehumidification process. MA2 is made to have a low humidity, so that the outside air O
Even in summer or the like, where the absolute humidity of A is high and the temperature rise is promoted by the heat of adsorption of the adsorbent layer X in the pre-dehumidification process,
In a state where the temperature rise is reduced as much as possible, the adsorption performance enhanced by the cold heat storage in the above-mentioned main dehumidification process is exerted for a long time, so that the pre-dehumidification performance is kept high.

Further, by using a part A4 of the pre-dehumidified outside air A3, which has been reduced in humidity by the pre-dehumidification, as the purge gas PA, the adsorbent layer X used for dehumidification following the purge treatment is used.
The amount of residual adsorbed water is more effectively reduced to further enhance the adsorption performance, and thereby, the dehumidification performance of the entire apparatus is increased.

Reference numeral 18 denotes a controller for controlling the opening and closing of a damper 19 interposed in a partly circulating air passage 10 and for controlling the output of an outside air fan 20 interposed in the air passage 11.
8, the absolute humidity x of the outside air OA is set to a set threshold value xs based on the detection information of the sensor 21 that detects the absolute humidity x of the outside air OA.
When it becomes lower, the damper 19 is closed and the outside air O is introduced.
The mixing of the outside air A2 after the pre-dehumidification for A is stopped, and the ventilation amount Q of the pre-dehumidification target outside air MA2 (in this case, only the introduced outside air OA) for the pre-dehumidification area 5 is reduced to the required outside air amount Qa of the dry room 1. Outside air fan 20
Adjust the output of.

The absolute humidity x of the outside air OA is equal to the set threshold value x.
s or more, the damper 19 is opened to introduce the outside air OA.
While mixing the outside air A2 after the pre-humidification for
Pre-humidification target outside air MA2 for pre-humidification area 5 (in this case,
The ventilation amount Q of the mixed outside air of the introduced outside air OA and the pre-dehumidified outside air A2 is a predetermined amount Δ from the required outside air amount Qa of the dry room 1.
The output of the outside air fan 20 is adjusted upward so as to increase the air flow Qb by Q (that is, to make the mixed air flow of the pre-dehumidified outside air A2 to the introduced outside air OA ΔQ).

That is, when the absolute humidity x of the introduced outside air OA becomes low and the dehumidification of the pre-dehumidification outside air MA2 by mixing the pre-dehumidification outside air A2 with the introduced outside air OA becomes less effective, the controller 18, the mixing of the pre-dehumidified outside air A2 with respect to the introduced outside air OA is stopped as described above, and the ventilation amount Q of the pre-dehumidification outside air MA2 with respect to the pre-dehumidification area 5 is reduced, so that the pre-dehumidification outside air M with low effectiveness is reduced.
It is possible to avoid wasting fan power by continuing to reduce the humidity of A2.

Numeral 22 designates room air having an air volume equal to the required external air volume Qa of the dry room 1 as the exhaust air EA.
In this embodiment, the required outside air amount Qa of the dry room 1 is set to about 5% to 10% of the supply air amount Qs of the main dehumidified air SA to the dry room 1 in the present embodiment. In other words, room air of about 90% to 95% of the supply air volume Qs of the main dehumidified air SA to the dry room 1 is mixed with the pre-humidified outside air A3 in the air passage 12 as return air RA.

Reference numeral 23 denotes a high-temperature gas HA for regeneration in the regeneration treatment area 6.
Is a regeneration heater that generates heat by heating. In the present embodiment,
Used purge gas PA ′ that has passed through the purge processing area 7
(That is, the outside air A4 after the pre-dehumidification after being used for the purging treatment) is led to the regeneration heater 23 through the air passage 24 and heated, and the heated air is sent to the regeneration processing area 6 as the regeneration high-temperature gas HA. It is.

After passing through the regeneration treatment area 6, a part of the used regeneration high-temperature gas HA 'discharged to the outside through the air passage 25 is partially diverted, and this divided gas HA "is returned. The used purge gas PA ′ in the air passage 24 through the passage 26
To thereby form a configuration in which the high-temperature gas for regeneration HA is partially circulated and used, thereby reducing the amount of heating required by the heater for regeneration 23 and the flow rate of the high-temperature gas for regeneration HA to the processing area 6 for regeneration. Is ensured to be large.

Reference numeral 27 denotes an air passage for mixing outside air OA with a mixture of the used purge gas PA 'and the diverted gas HA "led through the return line 26. Adjust the humidity of the gaseous HA.

[Another Embodiment] Next, another embodiment of the present invention will be listed.

In the above-described embodiment, the apparatus configuration using the adsorption rotor has been described. Alternatively, the main dehumidification, the pre-dehumidification, and the regeneration processing may be performed in parallel with a plurality of stationary adsorbent layers. By switching the ventilation gas to the stationary adsorbent layer by a valve device, each of the stationary adsorbent layers is used in the order of main dehumidification and pre-dehumidification, and then is used again in the order of main dehumidification and pre-dehumidification through a regeneration process. 1-3
The invention according to any one of the above items may be implemented.

In the above-described embodiment, a portion A2 of the outside air A1 after the pre-humidification before the return air RA from the low humidity target area 1 is mixed.
Is mixed with the introduced outside air OA, but in some cases, a part of the pre-dehumidified outside air after mixing the return air RA from the dehumidification target area 1 may be mixed with the introduced outside air OA. .

In the above-described embodiment, the controller 18 and the damper 19 are used as outside air circulation adjusting means so as to switch between the state in which the external air OA is partially mixed with the outside air after the pre-humidification and the state in which the outside air is stopped. Instead of this, the partial mixing amount of the outside air after the pre-dehumidification with respect to the introduced outside air OA may be changed stepwise or continuously, and in some cases, the partial mixing of the outside air after the pre-humidification with respect to the introduction outside air OA. May be always performed with the mixing amount kept constant.

When switching between performing and stopping the partial mixing of the outside air after the pre-dehumidification for the introduced outside air OA and changing the mixing amount, the switching and the change are automatically performed according to the state of the outside air OA. It may be performed manually or manually.

When the mixture of the return air RA from the dehumidification target area 1 and the pre-dehumidified outside air A3 is used as the main dehumidification target air MA1, the mixing ratio of the return air RA and the pre-dehumidification outside air A3 is as follows: The ratio (90:10 to 9) shown in the above-described embodiment.
The ratio is not limited to about 5: 5), but may be determined to be an appropriate ratio according to the design conditions of the apparatus.

The area 1 to be dehumidified for sending the air SA after the main dehumidification
The use and area configuration of may be any,
Further, in some cases, the air SA after the main dehumidification may be further dehumidified by another dehumidifying means and then supplied to the low-humidification target area 1.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of an apparatus.

FIG. 2 is a perspective view of a suction rotor.

[Explanation of symbols]

 Reference Signs List 1 Dehumidification target area 3 Adsorption rotor 4 Main dehumidification area 5 Pre-dehumidification area 6 Regeneration processing area 16 Cooling means 18, 19 Outside air circulation adjustment means A1 to A3 Outside air after pre-dehumidification HA Hot regeneration gas MA1 Main dehumidification air MA2 Pre-dehumidification Target outside air OA Introduced outside air RA Return air SA Air after main dehumidification X Adsorbent layer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuyuki Takeshima 2-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo F-term (reference) 3L054 BE10 4D052 AA08 CB01 DA01 DA06 DB01 GA01 GB02 HA01 HA03 HA21 HB02

Claims (4)

[Claims] 1. The introduced outside air is pre-dehumidified by ventilation to the adsorbent layer, and the outside air after the pre-dehumidification is mainly dehumidified by ventilation to the adsorbent layer before being used for the pre-dehumidification. The air is cooled by a cooling means and supplied to a low-humidification target area, and the adsorbent layer used in the order of the main dehumidification and the pre-dehumidification passes through a regeneration process in which a high-temperature gas for regeneration is passed through the adsorbent layer. A dehumidifier for reusing in the order of the main dehumidification and the pre-dehumidification, wherein the outside air after the pre-dehumidification is mixed with return air from the target area for dehumidification, and the mixed air is used for the main dehumidification. A dehumidifier configured to ventilate the adsorbent layer in the main dehumidification process as target air. 2. A part of the outside air after the pre-dehumidification is mixed with the introduced outside air before the pre-dehumidification, and the mixed outside air is passed through the adsorbent layer in the pre-dehumidification process as the outside air to be subjected to the pre-dehumidification. The dehumidifying device according to claim 1, wherein the dehumidifying device is configured to perform the following. 3. An external air circulation adjusting means for switching between a state in which the external air after the pre-dehumidification is partially mixed with the introduced external air and a state in which the external air is stopped, or changing a mixing amount thereof. Dehumidifier. 4. An adsorption rotor in which the adsorbent layer is continuously arranged in a rotor rotation direction as a rotor constituent material, and a rotation path of the adsorption rotor is provided on a rotor portion of the main dehumidification target air in a process of passing through the region. The main dehumidification area to ventilate, the pre-dehumidification area to vent the outside air to be subjected to the pre-dehumidification to the rotor part in the process of passing through the area, and the regeneration processing area to ventilate the high temperature gas for regeneration to the rotor part in the process of passing the area. 4. The method according to claim 1, wherein the rotors are arranged in order in the rotor rotation direction.
The dehumidifying device according to Item.