Dehumidification system

Abstract

This dehumidification system is provided with: a dehumidifying rotor 1; a desiccant air conditioner 2; a first regenerated exhaust pipeline 3 which feeds regenerated exhaust from a regeneration zone 1b of the dehumidifying rotor to the desiccant air conditioner; a purge feed air pipeline 4 which feeds purge air from the desiccant air conditioner to a purge zone 1c of the dehumidifying rotor; and a regeneration feed air pipeline 7 which feeds regeneration air from the purge zone to the regeneration zone. The desiccant air conditioner has a second regenerated exhaust pipeline 5 and an outside air inlet pipeline 6. The dehumidification system is further provided with: an indoor air inlet pipeline 10 which introduces air inside a dry room 9 into an adsorption zone 1a of the dehumidifying rotor; a first dry air feed pipeline 11 which feeds dry air from the adsorption zone to the dry room; and a second dry air feed pipeline 14 which feeds dry air from the desiccant air conditioner to the indoor air inlet pipeline.

Description

Technical Field

[0001] The present invention relates to a dehumidification system, and more particularly to a dehumidification system used for maintaining a low dew point environment in a dry room.

Background Art

[0002] A low dew point environment is required for the development and manufacture of lithium ion batteries, organic EL displays, and the like. A dry room is widely used as a device for generating and maintaining a low dew point environment, and the dry room is provided with a dehumidification system for controlling the dew point in the dry room.

[0003] This type of dehumidification system has a dehumidification rotor. The input side of the adsorption zone of the dehumidification rotor and the dry room are connected by an indoor air introduction pipeline, while the output side of the adsorption zone of the dehumidification rotor and the dry room are connected by a dry air supply pipeline. Thus, an air circulation path is formed by the dry room, the indoor air introduction pipeline, the adsorption zone of the dehumidification rotor, and the dry air supply pipeline.

[0004] Then, the indoor air containing moisture in the dry room is introduced into the indoor air introduction pipeline, and moisture is removed while passing through the adsorption zone of the dehumidification rotor. The dry air from the adsorption zone of the dehumidification rotor is supplied to the dry room through the dry air supply pipeline, whereby the air in the dry room is maintained at a desired low dew point (see, for example, Patent Documents 1 and 2).

[0005] By the way, during the operation in the dry room, the air in the dry room is contaminated by the exhalation of the operator and various gases generated during the processing of substances. Therefore, ventilation in the dry room is appropriately performed, and exhaust is discharged to the outside through the exhaust port provided in the dry room, and fresh outside air is taken into the dry room from the outside.

[0006] And, in order to take in this outside air, the dehumidification system is provided with an outside air introduction pipeline. However, in the conventional dehumidification system, the outside air introduction pipeline is connected to the indoor air introduction pipeline of the dehumidification system, and a cooler is provided in the outside air introduction pipeline. In this way, the outside air inhaled from the outside air introduction pipeline and condensation-dehumidified by the cooler is mixed with the indoor air of the dry room flowing in the indoor air introduction pipeline, and is introduced into the adsorption zone of the dehumidification rotor for adsorption dehumidification.

[0007] However, the outside air that has only been condensation-dehumidified has a much higher dew point temperature (significantly more moisture content) compared to the low dew point indoor air of the dry room. Therefore, most of the moisture to be adsorbed in the adsorption zone of the dehumidification rotor is the moisture contained in the outside air.

[0008] And, the dew point temperature of the mixed air of this outside air and the indoor air of the dry room must be suddenly lowered to a predetermined low dew point in the indoor of the dry room in the adsorption zone of the dehumidification rotor, and for this purpose, a great deal of power is consumed.

[0009] That is, the conventional dehumidification system consumes more power for dehumidifying the outside air taken into the dry room (dehumidification system) rather than dehumidifying the indoor air of the dry room. In this regard, the conventional dehumidification system has the drawbacks of a large amount of wasted power consumption and very poor energy utilization efficiency.

Prior Art Documents

Patent Documents

[0010]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0011] Accordingly, an object of the present invention is to provide a dehumidification system that exhibits a high energy-saving effect.

Means for Solving the Problems

[0012] To solve the above problems, according to the present invention, there is provided a dehumidification system for maintaining a low dew point environment in a dry room, including a dehumidification rotor having at least an adsorption zone, a regeneration zone, and a purge zone in order along the rotation direction of the rotor, an indoor air introduction pipe with one end connected to the dry room and the other end connected to the input side of the adsorption zone of the dehumidification rotor, a first dry air supply pipe with one end connected to the output side of the adsorption zone of the dehumidification rotor and the other end connected to the dry room, a fan provided in the indoor air introduction pipe, a cooler provided on the downstream side of the fan in the indoor air introduction pipe, a desiccant air conditioner, a first regeneration exhaust pipe for supplying regeneration exhaust from the regeneration zone of the dehumidification rotor to the desiccant air conditioner, and a purge air supply pipe for supplying purge air from the desiccant air conditioner to the purge zone of the dehumidification rotor. The desiccant air conditioner has a second regeneration exhaust pipe for discharging regeneration exhaust and an outdoor air introduction pipe. Further, a regeneration air supply pipe for supplying the regeneration air discharged from the purge zone of the dehumidification rotor to the regeneration zone of the dehumidification rotor, a heater provided in the regeneration air supply pipe, and a second dry air supply pipe for supplying dry air from the desiccant air conditioner to the upstream side of the fan in the indoor air introduction pipe are provided. A dehumidification system is provided, which is characterized by the above.

[0013] Here, the "dry room" shall include not only the dry room but also any device capable of maintaining a low dew point environment inside a glove box, a chamber, or the like. The same shall apply hereinafter.

Effects of the Invention

[0015] According to the present invention, the dehumidification system includes a dehumidification rotor and a desiccant air conditioner. The air flow in the dehumidification system is, in principle, separated into an air flow circulating in a first closed-loop pipeline passing through the adsorption zone and the dry room of the dehumidification rotor, and an air flow circulating in a second closed-loop pipeline passing through the regeneration zone of the dehumidification rotor, the purge zone of the dehumidification rotor, and the desiccant air conditioner. Further, the desiccant air conditioner is provided with a regeneration exhaust pipeline and an outside air introduction pipeline. Furthermore, a pipeline for supplying dry air is provided from the desiccant air conditioner to a pipeline portion between the dry room of the first closed-loop pipeline and the adsorption zone of the dehumidification rotor.

[0016] When the ventilation in the dry room is not performed (during normal operation), air circulates independently in each of the first and second closed-loop pipelines. The moisture to be adsorbed in the adsorption zone of the dehumidification rotor is limited to the first closed-loop pipeline and is small in amount. Also, in the second closed-loop pipeline, since the moisture in the first closed-loop pipeline adsorbed by the dehumidification rotor only needs to be removed, the amount of moisture to be adsorbed by the desiccant air conditioner is also small.

[0017] As a result, the amount of electric power consumed by the dehumidification rotor and the desiccant air conditioner can be reduced.

[0018] When fresh air is required in the dry room due to ventilation in the dry room, exhaust is discharged from the dry room to the outside, and the required amount of outside air is taken into the second closed-loop pipeline of the dehumidification system through the outside air introduction pipeline, dehumidified by the desiccant air conditioner, and supplied as dry air from the desiccant air conditioner to the first closed-loop pipeline.

[0019] Then, the mixed air of this dry air and the indoor air of the dry room is dehumidified in the adsorption zone of the dehumidification rotor, conditioned to a predetermined low dew point, and then supplied to the dry room.

[0020] Also in this case, the first and second closed-loop pipelines are basically separated, and the outside air is first introduced into the second closed-loop pipeline, dehumidified by the desiccant air conditioner, and then supplied to the first closed-loop pipeline.

[0021] And the dew point temperature of the dry air supplied from the desiccant air conditioner is much lower than the dew point temperature of the outside air condensed and dehumidified by the cooler, and the amount of moisture to be adsorbed in the adsorption zone of the dehumidification rotor is significantly less compared with the conventional example. Also, the amount of moisture to be adsorbed by the desiccant air conditioner is small.

[0022] Therefore, the amount of electric power consumed by the dehumidification rotor and the desiccant air conditioner can be reduced.

[0023] Thus, according to the present invention, the power consumption of the dehumidification system is significantly reduced, and the energy utilization efficiency is extremely improved.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0025] Hereinafter, the configuration of the present invention will be described based on preferred embodiments with reference to the accompanying drawings. FIG. 1(A) is a diagram showing a schematic configuration of a dehumidification system according to an embodiment of the present invention, and FIG. 1(B) is a schematic cross-sectional view of the dehumidification rotor of the dehumidification system shown in FIG. 1(A).

[0026] As shown in FIG. 1, according to the present invention, there are provided a first dehumidification rotor 1 having at least an adsorption zone 1a, a regeneration zone 1b, and a purge zone 1c in order along the rotation direction of the rotor, a desiccant air conditioner 2, a first regeneration exhaust pipe 3 for supplying regeneration exhaust air from the regeneration zone 1b of the first dehumidification rotor 1 to the desiccant air conditioner 2, a first purge supply pipe 4 for supplying purge air from the desiccant air conditioner 2 to the purge zone 1c of the first dehumidification rotor 1, and a first regeneration supply pipe 7 for supplying the regeneration air discharged from the purge zone 1c of the first dehumidification rotor 1 to the regeneration zone 1b of the first dehumidification rotor 1.

[0027] Further, the desiccant air conditioner 2 has a second regeneration exhaust pipe 5 for discharging regeneration exhaust air and an outside air introduction pipe 6.

[0028] A first heater 8 is provided in the first regeneration supply pipe 7, one end 10a of an indoor air introduction pipe 10 is connected to a dry room 9, and the other end 10b of the indoor air introduction pipe 10 is connected to the input side of the adsorption zone 1a of the first dehumidification rotor 1.

[0029] Furthermore, one end 11a of a first dry air supply pipe 11 is connected to the output side of the adsorption zone 1a of the first dehumidification rotor 1, and the other end 11b of the first dry air supply pipe 11 is connected to the dry room 9.

[0030] A first fan 12 is provided in the indoor air introduction pipe 10, and a first cooler (cooling coil) 13 is provided on the downstream side of the first fan 12 in the indoor air introduction pipe 10.

[0031] Also, according to the present invention, there are provided a second dry air supply pipe 14 for supplying dry air from the desiccant air conditioner 2 to the upstream side of the first fan 12 in the indoor air introduction pipe 10, a dew point meter 15 provided in the first dry air supply pipe 11, and a dew point meter 16 disposed in the dry room 9.

[0032] FIG. 2(A) is a diagram showing a schematic configuration of an example of a desiccant air conditioner of the dehumidification system in FIG. 1, and FIG. 2(B) is a schematic cross-sectional view of the dehumidification rotor of the desiccant air conditioner in FIG. 2(A). As shown in FIG. 2(B), the desiccant air conditioner 2 has a second dehumidification rotor 20 having an adsorption zone 20a in order along the rotation direction of the rotor. , a regeneration zone 20c and a purge zone 20c The second dehumidification rotor 20 has a second dehumidification rotor 20 having an adsorption zone 20a.

[0033] Also, as shown in FIG. 2(A), the output end of the first regeneration exhaust pipe 3 is connected to the input side of the adsorption zone 20a of the second dehumidification rotor 20, while the input end of the first purge supply pipe 4 is connected to the output side of the adsorption zone 20a of the second dehumidification rotor 20, and the input end of the second regeneration exhaust pipe 5 is connected to the output side of the regeneration zone 20c of the second dehumidification rotor 20.

[0034] The desiccant air conditioner 2 also has a second fan 21 provided in the first regeneration exhaust pipe 3, a second cooler (cooling coil) 22 provided on the downstream side of the second fan 21 in the first regeneration exhaust pipe 3, and a third fan 23 provided in the first purge supply pipe 4.

[0035] And the second dry air supply pipe 14 branches from the upstream side of the third fan 23 in the first purge supply pipe 4, and the output end of the outside air introduction pipe 6 is connected to the upstream side of the second fan 21 in the first regeneration exhaust pipe 3. A motor damper 30 is provided in the second dry air supply pipe 14, and a dew point meter 24 is provided at an appropriate position in the first purge supply pipe 4.

[0036] The desiccant air conditioner 2 further includes a third cooler 25 provided in the outside air introduction pipeline 6, a motor damper 26 provided on the downstream side of the third cooler 25 in the outside air introduction pipeline 6, a second purge air supply pipeline 27 that branches from the upstream side of the third fan 23 in the first purge air supply pipeline 4 and supplies purge air to the purge zone 20b of the second dehumidification rotor 20, a second regeneration air supply pipeline 28 that supplies the regeneration air discharged from the purge zone 20b of the second dehumidification rotor 20 to the regeneration zone 20c of the second dehumidification rotor 20, and a second heater 29 provided in the second regeneration air supply pipeline 28.

[0037] Also, the input end of the second regeneration exhaust pipeline is connected to the output side of the regeneration zone 20c of the second dehumidification rotor 20. 5 is connected.

[0038] Referring again to FIG. 1(A), the dry room 9 is provided with an exhaust pipeline 17, and the exhaust pipeline 17 is provided with a fourth fan 18 and a motor damper 19 on its upstream side.

[0039] During the operation of the dehumidification system of the present invention, when the dry room 9 is not ventilated, the motor damper 19 of the exhaust pipeline 17 is closed and the fourth fan 18 is stopped. And the air flow in the dehumidification system is basically separated into the air flow circulating in the first closed-loop pipeline (formed by the indoor air introduction pipeline 10 and the first dry air supply pipeline 11) passing through the adsorption zone 1a of the dehumidification rotor 1 and the dry room 9, and the air flow circulating in the second closed-loop pipeline (formed by the first regeneration exhaust pipeline 3, the first purge air supply pipeline 4, and the first regeneration air supply pipeline 7) passing through the regeneration zone 1b of the dehumidification rotor 1, the purge zone 1c of the dehumidification rotor 1, and the desiccant air conditioner 2.

[0040] While the air circulates in the first closed-loop pipeline, the air in the dry room 9 is introduced into the first cooler 13 through the indoor air introduction pipeline 10, condensed by the first cooler 13 to remove moisture, and supplied to the adsorption zone 1a of the first dehumidification rotor 1.

[0041] In the adsorption zone 1a, the rotor adsorbs moisture in the supplied air. Then, the dry air from which the moisture has been removed by the rotor is supplied to the dry room 9 through the first dry air supply pipeline 11.

[0042] On the other hand, while air circulates in the second closed-loop pipeline, the air heated by the first heater 8 is introduced into the regeneration zone 1b of the first dehumidification rotor 1 to absorb the moisture contained in the rotor. On the other hand, the rotor is regenerated (dried) by this air and moves from the regeneration zone 1b to the purge zone 1c.

[0043] The air used for regenerating the rotor and containing moisture is discharged from the regeneration zone and introduced into the second cooler 22 of the desiccant air conditioner 2. The air introduced into the second cooler 22 is condensed to remove moisture. The air discharged from the second cooler 22 is introduced into the adsorption zone 20a of the second dehumidification rotor 20 of the desiccant air conditioner 2.

[0044] In the adsorption zone 20a, the rotor adsorbs moisture in the introduced air. Then, the dry air is supplied from the adsorption zone 20a through the first purge supply pipeline 4 to the purge zone 1c of the first dehumidification rotor 1.

[0045] The rotor adsorbed with moisture moves from the adsorption zone 20a to the regeneration zone 20c. In the regeneration zone 20c, the rotor is regenerated (dried) by the supplied air and moves from the regeneration zone 20c to the adsorption zone 20a. On the other hand, the air used for the regeneration of the rotor and having absorbed moisture is discharged to the outside through the second regeneration exhaust pipe 5.

[0046] Then, the opening degree of the motor damper 26 is adjusted so that an amount of outside air corresponding to the amount of air discharged to the outside from the regeneration zone 20c of the second dehumidifying rotor 20 is taken into the first regeneration exhaust pipe 3 (the first closed-loop pipe) through the outside air introduction pipe 6. While flowing in the outside air introduction pipe 6, the outside air is condensed by the third cooler 25 to remove moisture.

[0047] In the purge zone 1c, the rotor is cooled by the air supplied from the first purge air supply pipe 4, while the air is heated by the rotor. The rotor cooled in the purge zone 1c moves to the adsorption zone 1a.

[0048] Also, a part of the dry air flowing through the first purge air supply pipe 4 is supplied to the purge zone 20b of the second dehumidifying rotor 20 through the second purge air supply pipe 27. In the purge zone 20b, the rotor is cooled by the supplied air, while the air is heated by the rotor. The rotor cooled in the purge zone 20b moves to the adsorption zone 20a. The air discharged from the purge zone 20b is supplied to the regeneration zone 20c through the second regeneration air supply pipe 28. The air is heated by the second heater 29 while flowing in the second regeneration air supply pipe 28.

[0049] When the air in the dry room 9 is contaminated by the exhalation of the operator in the dry room 9 and various gases generated during the processing of substances, etc., the dry room 9 is ventilated. During ventilation, the motor damper 19 is opened, the fourth fan 18 is actuated, and the air in the drill room 9 is discharged to the outside through the exhaust pipeline 17.

[0050] At the same time, the motor damper 30 is opened at a predetermined opening degree, and an amount of outside air corresponding to the exhaust volume through the exhaust pipeline 17 from the drill room 9 is taken in from the outside air introduction pipeline 6 of the desiccant air conditioner 2. The taken-in air is dehumidified by the desiccant air conditioner 2 and supplied as dry air from the desiccant air conditioner 2 to the indoor air introduction pipeline 10 (the second closed-loop pipeline) through the second dry air supply pipeline 14.

[0051] Next, the mixed air of this dry air and the indoor air in the drill room 9 is dehumidified in the adsorption zone 1a of the first dehumidification rotor 1 and conditioned to a predetermined low dew point, and then supplied to the drill room 9. Thereby, the air in the drill room 9 is maintained at a low dew point, fresh air is supplied into the drill room 9, and the ventilation of the drill room 9 is completed.

[0052] According to the present invention, the dehumidification system includes the first dehumidification rotor 1 and the desiccant air conditioner 2, and the air flow in the dehumidification system basically circulates in the first closed-loop pipeline passing through the adsorption zone 1a of the first dehumidification rotor 1 and the drill room 9, and the regeneration zone 1b of the first dehumidification rotor 1, the purge zone 1c of the first dehumidification rotor 1, and the second closed-loop pipeline passing through the desiccant air conditioner 2.

[0053] Furthermore, the desiccant air conditioner 2 is provided with a regeneration exhaust pipeline 5 and an outside air introduction pipeline 6, and a pipeline 16 for supplying dry air from the desiccant air conditioner 2 to the pipeline portion between the drill room 9 of the first closed-loop pipeline and the adsorption zone 1a of the first dehumidification rotor 1 is provided.

[0054] When the ventilation in the drying room 9 is not carried out (during normal operation), air circulates independently in each of the first and second closed-loop pipelines, and the moisture to be adsorbed in the adsorption zone 1a of the dehumidification rotor 1 is limited to the first closed-loop pipeline and is small in amount. Also, in the second closed-loop pipeline, since it is only necessary to remove the moisture in the first closed-loop pipeline adsorbed by the dehumidification rotor 1, the amount of moisture to be adsorbed by the desiccant air conditioner 2 is also small.

[0055] As a result, the total power consumption of the dehumidification system including the dehumidification rotor 1 and the desiccant air conditioner 2 can be reduced.

[0056] Also, when fresh air is required in the drying room 9 due to ventilation in the drying room 9, exhaust is discharged from the drying room 9 to the outside, and the required amount of outside air is taken into the second closed-loop pipeline of the dehumidification system through the outside air introduction pipeline 6, dehumidified by the desiccant air conditioner 2, and supplied as dry air from the desiccant air conditioner 2 to the first closed-loop pipeline.

[0057] Also in this case, the first and second closed-loop pipelines are basically separated, and the outside air is first introduced into the second closed-loop pipeline, dehumidified by the desiccant air conditioner 2, and then supplied to the first closed-loop pipeline.

[0058] The dew point temperature of the dry air supplied from the desiccant air conditioner 2 is much lower than the dew point temperature of the outside air condensed and dehumidified by the cooler, so the amount of moisture to be adsorbed in the adsorption zone 1a of the dehumidification rotor 1 is significantly less compared to the conventional example. Also, the amount of moisture to be adsorbed by the desiccant air conditioner is small.

[0059] Therefore, the power consumption of the dehumidification rotor and the desiccant air conditioner can be reduced.

[0060] Thereby, the total power consumption of the dehumidification system including the dehumidification rotor 1 and the desiccant air conditioner 2 is significantly reduced, and the energy utilization efficiency is remarkably improved.

[0061] The preferred embodiments of the present invention have been described above. However, the configuration of the present invention is not limited to the above embodiments, and it goes without saying that those skilled in the art can devise various modifications within the scope of the configuration described in the appended claims. For example, the configuration of the desiccant air conditioner in the above embodiment is merely an example, and as a desiccant air conditioner, any known configuration can be adopted.

Explanation of Reference Numerals

[0062] 1 First dehumidification rotor 1a Adsorption zone 1b Regeneration zone 1c Purge zone 2 Desiccant air conditioner 3 First regeneration exhaust pipeline 4 First purge supply air pipeline 5 Second regeneration exhaust pipeline 6 Outdoor air introduction pipeline 7 First regeneration supply air pipeline 8 First heater 9 Dry room 10 Indoor air introduction pipeline 10a One end 10b The other end 11 First dry air supply pipeline 11a One end 11b The other end 12 First fan 13 First cooler 14 Second dry air supply pipeline 15 Dew point meter 16 Dew point meter 17 Exhaust pipeline 18 Fourth fan 19 Motor damper 20 Second dehumidification rotor 20a Adsorption zone 20b Purge zone 20c Regeneration zone 21 Second fan 22 Second cooler 23 Third fan 24 Dew point meter 25 Third cooler 26 Motor damper 27 Second purge air supply line 28 Second regeneration air supply line 29 Second heater 30 Motor damper

Claims

1. A dehumidification system for maintaining a low dew point environment in a drying room, comprising: A dehumidification rotor having at least an adsorption zone, a regeneration zone, and a purge zone in order along the rotation direction of the rotor; An indoor air introduction pipeline with one end connected to the drying room and the other end connected to the input side of the adsorption zone of the dehumidification rotor; A first dry air supply pipeline with one end connected to the output side of the adsorption zone of the dehumidification rotor and the other end connected to the drying room; A fan provided in the indoor air introduction pipeline; A cooler provided on the downstream side of the fan in the indoor air introduction pipeline; A desiccant air conditioner; A first regeneration exhaust pipeline for supplying regeneration exhaust from the regeneration zone of the dehumidification rotor to the desiccant air conditioner; A purge air supply pipeline for supplying purge air from the desiccant air conditioner to the purge zone of the dehumidification rotor, comprising: The desiccant air conditioner has a second regeneration exhaust pipeline for discharging regeneration exhaust and an outside air introduction pipeline. Furthermore, A regeneration air supply pipeline for supplying the regeneration air discharged from the purge zone of the dehumidification rotor to the regeneration zone of the dehumidification rotor; A heater provided in the regeneration air supply pipeline; A second dry air supply pipeline for supplying dry air from the desiccant air conditioner to the upstream side of the fan in the indoor air introduction pipeline, comprising: The desiccant air conditioner Has another dehumidification rotor having an adsorption zone, a regeneration zone, and a purge zone in order along the rotation direction of the rotor, While the output end of the first regeneration exhaust pipeline is connected to the input side of the adsorption zone of the other dehumidification rotor, the input end of the purge air supply pipeline is connected to the output side of the adsorption zone of the other dehumidification rotor, the second dry air supply pipeline branches from the purge air supply pipeline, and the input end of the second regeneration exhaust pipeline is connected to the output side of the regeneration zone of the other dehumidification rotor. The dehumidification system is characterized by this.

2. The desiccant air conditioner further comprises: Another fan provided in the first regeneration exhaust pipeline; Another cooler provided on the downstream side of the other fan in the first regeneration exhaust pipeline; Yet another fan provided in the purge air supply pipeline, The second dry air supply pipeline branches from the upstream side of the yet another fan in the purge air supply pipeline, and the output end of the outside air introduction pipeline is connected to the upstream side of the other fan in the first regeneration exhaust pipeline. The decant air conditioner further includes a damper provided in the second dry air supply pipeline, yet another cooler provided in the outside air introduction pipeline, another damper provided on the downstream side of the yet another cooler in the outside air introduction pipeline, another purge air supply pipeline that branches from the upstream side of the yet another fan in the purge air supply pipeline and supplies purge air to the purge zone of the another dehumidifying rotor, another regeneration air supply pipeline that supplies the regeneration air discharged from the purge zone of the another dehumidifying rotor to the regeneration zone of the another dehumidifying rotor, and another heater provided in the another regeneration air supply pipeline, and the dehumidification system according to claim 1, characterized in that it has the above.

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