KR20230113700A - Dehumidification system using counterflow in rotor - Google Patents

Abstract

The dehumidification system is divided into a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area, and a rotation area is rotated by a drive motor to pass through the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area in order. A rotor for discharging dehumidified low dew point air after adsorbing moisture contained in the air introduced into the dehumidifying zone, an external air pre-cooler for cooling the inflowed external air and discharging it to the external air dehumidifying zone, An intermediate pre-cooler that cools mixed air in which external air and circulating air dehumidified in the air dehumidification area are mixed, a fan that discharges the air that has passed through the intermediate pre-cooler to the dehumidification area of the rotor, and air that has passed through the purge area. and a reheat heater for heating to a regeneration temperature and discharging to the regeneration zone. Some of the low dew point air discharged from the dehumidification zone is introduced into the purge zone.

Description

Dehumidification system using cross flow in the rotor {DEHUMIDIFICATION SYSTEM USING COUNTERFLOW IN ROTOR}

The present disclosure relates to a dehumidification system.

The industrial low dew point dehumidification system is a facility that controls the humidity of supplied air to maintain the indoor space where the production process is conducted as a dry room with a low dew point. In battery production or food and pharmaceutical production, such industrial low dew point dehumidification systems are used to reduce problems that may be caused by moisture.

A conventional industrial low dew point dehumidification system uses a rotor that absorbs moisture with silica gel or the like to supply air suitable for the temperature and humidity required in a dry room, which is called dry dehumidification or desiccant dehumidification. Most of the air that has passed through the rotor is adjusted to the temperature and humidity required in the dry room and supplied to the dry room, and some of the air that has passed through the rotor is heated by the reheater and passes through the regeneration area of the rotor to remove moisture from the rotor. used to remove

However, for low dew point dehumidification, air with low temperature and low absolute humidity must flow into the dehumidification area of the rotor. In the case of dehumidification with a single rotor, there is a limit to lowering the temperature and humidity flowing into the dehumidification area. The dew point of 60°C is not reached. In order to compensate for this, a 2-rotor dehumidification system is used, but since two huge rotors must be installed, a large space must be provided and the cost increases.

The present disclosure provides a dehumidification system that divides a rotor into a dehumidification zone, an outside air dehumidification zone, a regeneration zone, and a purge zone, and increases dehumidification efficiency by creating a cross flow in the rotor.

A dehumidification system according to an embodiment, which is divided into a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area, and a rotating area is rotated by a drive motor to the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area. Rotating so as to pass in the order of, the rotor adsorbs moisture contained in the air introduced into the dehumidifying zone, then discharges the dehumidified low dew point air, and the outside air is cooled and discharged to the external air dehumidifying zone. An air pre-cooler, an intermediate pre-cooler for cooling mixed air in which external air dehumidified in the external air dehumidification zone and circulating air are mixed, a fan discharging the air passing through the intermediate pre-cooler to the dehumidification zone of the rotor; and and a reheating heater that heats the air that has passed through the purge zone to a regeneration temperature and discharges it to the regeneration zone. Some of the low dew point air discharged from the dehumidification zone is introduced into the purge zone.

An air pipe may be constructed such that air flows flowing into the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area sequentially cross each other.

An air pipe may be constructed so that some of the air that has passed through the regeneration zone is returned to the inside and mixed with the air that has passed through the purge zone to be introduced into the regeneration zone.

A dehumidifying system according to another embodiment, which is divided into a dehumidifying area, an outside air dehumidifying area, a regeneration area, and a purge area, and a rotating area is rotated by a drive motor to the dehumidifying area, the outside air dehumidifying area, the regeneration area, and the purge area. Rotating so as to pass in the order of, the rotor adsorbs moisture contained in the air introduced into the dehumidifying zone, then discharges the dehumidified low dew point air, and the outside air is cooled and discharged to the external air dehumidifying zone. An air pre-cooler, a fan for discharging the external air dehumidified in the external air dehumidification zone to the dehumidification zone of the rotor, and a reheater for heating the air passing through the purge zone to a regeneration temperature and discharging it to the regeneration zone. do. Some of the low dew point air discharged from the dehumidification area is introduced into the purge area, or some of the air discharged from the external air precooler is introduced into the purge area.

An air pipe may be constructed such that air flows flowing into the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area sequentially cross each other.

An air pipe may be constructed so that some of the air that has passed through the regeneration zone is returned to the inside and mixed with the air that has passed through the purge zone to be introduced into the regeneration zone.

A dehumidification system according to another embodiment, which is divided into a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area, and a rotating area is rotated by a driving motor to the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area. A rotor that adsorbs moisture contained in the air introduced into the dehumidifying zone while passing through the zones in order, then discharges the dehumidified low dew point air, cools the inflowed external air, and discharges it to the external air dehumidifying zone. An external air pre-cooler, an intermediate pre-cooler for cooling mixed air in which external air dehumidified in the external air dehumidification zone and circulating air are mixed, a fan discharging the air passing through the intermediate pre-cooler to the dehumidification zone of the rotor, and and a reheating heater that heats the air that has passed through the purge zone to a regeneration temperature and discharges it to the regeneration zone. A part of the mixed air is introduced into the purge zone.

An air pipe may be constructed such that air is introduced from one side of the rotor into the external air dehumidification area and the regeneration area, and air is introduced into the dehumidification area and the purge area from the other side of the rotor.

An air pipe may be constructed so that some of the air that has passed through the regeneration zone is returned to the inside and mixed with the air that has passed through the purge zone to be introduced into the regeneration zone.

A dehumidification system according to another embodiment, which is divided into a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area, and a rotating area is rotated by a driving motor to the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area. A rotor that adsorbs moisture contained in the air introduced into the dehumidifying zone while passing through the zones in order, and then discharges the dehumidified low dew point air; An external air pre-cooler, a fan for discharging the external air dehumidified in the external air dehumidification zone to the dehumidification zone of the rotor, and a reheating heater for heating the air passing through the purge zone to a regeneration temperature and discharging it to the regeneration zone include Some of the air discharged to the outside air dehumidification zone is introduced into the purge zone.

An air pipe may be constructed such that air is introduced from one side of the rotor into the external air dehumidification area and the regeneration area, and air is introduced into the dehumidification area and the purge area from the other side of the rotor.

An air pipe may be constructed so that some of the air that has passed through the regeneration zone is returned to the inside and mixed with the air that has passed through the purge zone to be introduced into the regeneration zone.

The dehumidification system of the present disclosure can produce supply air with an ultra-low dew point using a single rotor.

Since the dehumidification system of the present disclosure provides a two-rotor effect with a single rotor, space and cost can be reduced.

1 is a typical single rotor dehumidifier.
2 to 4 are configuration diagrams of a rotor dehumidifying system having an entire counter pattern according to an exemplary embodiment.
5 and 6 are configuration diagrams of a rotor dehumidification system having a half counter pattern according to another embodiment.
FIG. 7 is a diagram illustrating a device arrangement of a dehumidifying system according to an exemplary embodiment.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated. In addition, terms such as “… unit”, “… unit”, and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. there is.

1 is a typical single rotor dehumidifier.

Referring to FIG. 1, the single rotor dehumidifier 10 includes a rotor 11, a precooler (PC) 12 and 13, a reheating heater 14, and a fan 15 and 16. , an after cooler 17, and an after heater 18. The rotor 11 is attached with a desiccant, rotates by a driving motor, absorbs moisture contained in the introduced air, and then discharges supply air (SA) to the dry room. The rotor 11 is divided into a dehumidification zone, a regeneration zone, and a purge zone.

The outdoor air (OA) is cooled and dehumidified by the pre-cooler (PC) 12, and the circulating air (Return Air, RA) cooled by the pre-cooler (PC) 13 in the mixing chamber ) mixed with Circulation air (RA) is introduced from the dry room. The mixed air is a mixture of cooled and dehumidified external air and low-humidity circulating air to become medium-humid air.

The mixed air is introduced into the dehumidifying area of the rotor 11 by the fan 15. Supply air SA passing through the dehumidifying area of the rotor 11 passes through the aftercooler 17 and the afterheater 18 while being adjusted to the temperature and humidity required in the dry room, and then supplied to the dry room. At this time, since there is a lot of moisture in the mixed air, the amount of dehumidification to be processed by the rotor 11 may increase.

Some mixed air is used for rotor regeneration. Some of the mixed air passes through the purge zone of the rotor 11, is heated to a high regeneration temperature by the reheat heater 14, passes through the regeneration zone of the rotor 11, and is discharged by the fan 16 (Exhaust Air, EA). Moisture adhering to the rotor 11 is removed by the high-temperature air introduced into the regeneration zone.

In this way, while the rotor 11 divided into the dehumidification zone, regeneration zone, and purge zone rotates, dehumidification and regeneration are repeated. At this time, by rotating the rotor, the rotation area dried through the regeneration area passes through the purge area through which the wet mixed air passes, and then rotates to the dehumidification area. Therefore, even if the surface of the rotor is dried while passing through the regeneration zone, the air passing through the dehumidification zone is dehumidified after passing through the purge zone through which the mixed air of heavy humidity passes, preventing low dew point dehumidification in the dehumidification zone.

In addition, the dehumidification performance of the rotor 11 is greatly affected by the state of the air flowing into the dehumidifying area, and there is a limit to lowering the temperature and humidity of the external air only with the precooler. In particular, when dehumidification is performed using outside air in a humid season, the dehumidification load to be processed by the rotor increases, and there is a limit to producing low dew point supply air.

In addition, since the regeneration temperature must be raised to a high temperature (180 to 220 ° C) in order to dehumidify the mixed air of the cooled and dehumidified external air and the circulating air to produce low dew point supply air, a lot of energy is consumed in rotor regeneration.

In the following, a single rotor based dehumidification system that provides ultra-low dew point dehumidification while being energy efficient is described.

2 to 4 are configuration diagrams of a rotor dehumidifying system having an entire counter pattern according to an exemplary embodiment.

Referring to FIG. 2 , the dehumidification system 100A includes a rotor 110, an outside air precooler 120, an intermediate precooler 130, a reheater 140, fans 150 and 160, and an aftercooler 170. , and an afterheater 180. In addition, the dehumidifying system 100A further includes valves 191 , 192 , 193 , 194 , and 195 that control air flow introduced and discharged through the air pipe. The dehumidifying system 100A includes a processor (not shown) that controls internal devices. The positions of the fans 150 and 160 may vary and may be added. Here, valves are called opening and closing devices that block air flow or generate air flow for convenience.

The rotor 110 is attached with a desiccant, rotates by a driving motor, adsorbs moisture contained in the introduced air, and then discharges the dehumidified air. The rotor 110 is divided into a dehumidification area 111, an outside air dehumidification area 112, a regeneration area 113, and a purge area 114, and the rotor rotation area is a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area. Rotate through the zones in order. Each zone of the rotor can be divided into various angles depending on conditions, for example, the dehumidification zone is 180˚∼300˚, the outside air dehumidification zone is 30˚∼90˚, the regeneration zone is 30˚∼90˚, and the purge zone is 30˚∼90˚. Zones can be divided in an angular range of 15° to 60°.

Air flows passing through the dehumidification zone 111, the outside air dehumidification zone 112, the regeneration zone 113, and the purge zone 114 are designed to cross each other in opposite directions, and this can be called an overall counter pattern. That is, based on the air flow entering the dehumidifying area 111, the air flow coming out of the outside air dehumidifying area 112, the air flow entering the regeneration area 113, and the air flow coming out of the purge area 114 are sequentially , and an air pipe is built in the dehumidifying system 100A to form such a cross flow. Describing the air flow introduced with respect to the rotor 110, it enters the dehumidifying area 111 from one side (eg, the left side), and the outside air dehumidifying area 112 is opposite to the dehumidifying area 111. It comes in from the side (e.g., the right side), the regeneration area 113 comes in from the side (left) opposite to the outside air dehumidification area 112, and the purge area 114 is opposite the regeneration area 113. It comes in from the side (right).

The air flow in the dehumidification system 100A is as follows.

The outside air (OA) introduced through the valve 191 is cooled and dehumidified by the outside air pre-cooler 120 and passes through the outside air dehumidification area 112 of the rotor 110 . The high-humidity outside air passes through the outside air dehumidifying zone 112 and is dry-dehumidified into medium-temperature and medium-humidity air.

The external air dehumidifying zone 112 is a zone for primary dry dehumidification of external air by using the excess dehumidifying power of the surface of the rotor that has passed through the dehumidifying zone 111 . The external air dehumidification zone 112 has the same effect as the primary dry dehumidification of the external air by the primary rotor in the two-rotor system, and the dehumidification zone (111 ) to provide stable dehumidification performance. In addition, since the external air is first dry dehumidified in the external air dehumidification zone 112 and then passes through the dehumidification zone 111, the problem of supplying some external air without being dehumidified (dehumidification loss due to the bypass factor) is solved. In short, the dehumidification system can be operated stably.

The outside air passing through the outside air dehumidifying area 112 is mixed with the circulation air RA introduced through the valve 192. The mixed air may be cooled by the intermediate pre-cooler 130 to increase dehumidification efficiency.

The mixed air is introduced into the dehumidifying area 111 of the rotor 110 by the fan 150 . Low dew point dry air is discharged from the dehumidifying area 111, and most of the low dew point dry air SA passes through the aftercooler 170 and the afterheater 180, and is adjusted to the temperature and humidity required in the dry room. After that, it is supplied to the dry room.

Some of the air discharged from the dehumidification area 111 is introduced into the purge area 114 through the valve 193. The air passing through the purge zone 114 cools the surface of the rotor, is heated to a regeneration temperature by the reheat heater 140, and then flows into the regeneration zone 113. At this time, low dew point dry air passes through the purge zone 114 instead of the high humidity mixed air. Therefore, even if the dry surface of the rotor regenerated in the regeneration zone 113 passes through the purge zone 114, it may pass to the dehumidifying zone 111 while remaining dry. Through this, the dehumidification performance of the dehumidification zone 111 can be increased and the energy required to create low dew point air can be reduced.

The air passing through the regeneration zone 113 is moved to the open valve 194 by the fan 160 and discharged to the outside (EA). Moisture adhering to the rotor 110 is removed by the high-temperature air introduced into the regeneration zone.

At this time, some of the air that has passed through the regeneration zone 113 may be returned to the inside through the valve 195, mixed with the air that has passed through the purge zone 114, and introduced into the regeneration zone 113. The air that has passed through the regeneration zone 113 is of good quality lower than the absolute humidity of the outside air, and by reusing the high quality exhaust air, the required amount of outside air can be reduced, and as a result, the load of the outside air precooler 120 is reduced, energy can be saved. In particular, when the dehumidification load reaches its peak in summer with high temperature and humidity, the dehumidification efficiency can be increased by reducing the amount of external air as much as the recovered exhaust air, and the dehumidification load that fluctuates depending on the condition of the external air can be appropriately adjusted.

Referring to FIG. 3 , the dehumidification system 100B has a structure changed from the dehumidification system 100A of FIG. 2 to dehumidify with outside air OA without introducing circulating air RA. That is, the dehumidifying system 100B has a structure in which the valve 192 through which the circulating air RA is introduced is omitted or closed.

In the dehumidifying system 100B, it is different from the dehumidifying system 100A in that the outside air passing through the outside air dehumidifying zone 112 is not mixed with the circulating air and flows into the dehumidifying zone 111 of the rotor 110. , the overall operation is the same as that of the dehumidification system 100A.

On the other hand, the rotor 110 of the dehumidification system 100B is divided into a dehumidification zone 111, an outside air dehumidification zone 112, a regeneration zone 113, and a purge zone 114, and the rotor rotation zone is a dehumidification zone, It rotates to pass through the outside air dehumidification area, regeneration area and purge area in order. At this time, each zone of the rotor can be divided into various angles according to conditions, and the angle of each zone can be divided differently from the case of using circulating air. For example, the dehumidification zone may be divided in an angle range of 120° to 180°, the external air dehumidification zone 60° to 120°, the regeneration zone 30° to 90°, and the purge zone 15° to 60°.

Referring to FIG. 4 , the dehumidification system 100C dehumidifies the outside air OA without introducing the circulating air RA in the dehumidification system 100A of FIG. It has a modified structure so that outside air flows into the purge zone 114.

Similar to FIG. 2 , the outside air (OA) is cooled and dehumidified by the outside air precooler 120 and passes through the outside air dehumidification zone 112 of the rotor 110 .

The outside air passing through the outside air dehumidifying area 112 is introduced into the dehumidifying area 111 . The low dew point dry air SA that has passed through the dehumidifying area 111 passes through the aftercooler 170 and the afterheater 180, is adjusted to a temperature and humidity required in the dry room, and is then supplied to the dry room.

Meanwhile, some external air cooled and dehumidified by the external air precooler 120 is introduced into the purge zone 114 . The air passing through the purge zone 114 cools the surface of the rotor, is heated to a regeneration temperature by the reheat heater 140, and then flows into the regeneration zone 113.

Air passing through the regeneration zone 113 is discharged to the outside (EA).

At this time, some of the air that has passed through the regeneration zone 113 may be returned to the inside through the valve 195, mixed with the air that has passed through the purge zone 114, and introduced into the regeneration zone 113.

5 and 6 are configuration diagrams of a rotor dehumidification system having a half counter pattern according to another embodiment.

Referring to FIG. 5 , the dehumidification system 200A includes a rotor 210, an outside air precooler 220, an intermediate precooler 230, a reheater 240, fans 250 and 260, and an aftercooler 270. , and an afterheater 280. In addition, the dehumidifying system 200A further includes valves 291 , 292 , 293 , and 294 for controlling the flow of air introduced and discharged through the air pipe. The dehumidifying system 200A includes a processor (not shown) that controls internal devices. The positions of the fans 250 and 260 may vary and may be added.

The rotor 210 is attached with a desiccant, rotates by a driving motor, adsorbs moisture contained in the introduced air, and then discharges the dehumidified air. The rotor 210 is divided into a dehumidification area 211, an outside air dehumidification area 212, a regeneration area 213, and a purge area 214, and the rotor rotation area is a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area. Rotate through the zones in order. Each zone of the rotor can be divided at various angles depending on conditions.

Here, in the dehumidification system 200A, unlike the dehumidification system 100A, the air flows through the dehumidification area 211 and the purge area 214 in the same direction, and the outside air dehumidification area 212 and the regeneration area 213 are reversed. As a structure flowing in the direction, this can be called a half counter pattern. That is, based on the air flow entering the dehumidifying area 211, the air flow from the outside air dehumidifying area 212, the air flow from the regeneration area 213, and the air flow entering the purge area 214 cross each other. And, an air pipe is built in the dehumidification system 200A to form such a cross flow. Describing the air flow introduced with respect to the rotor 210, the dehumidification area 211 and the purge area 214 come from one side (eg, the left side), and the outside air dehumidification area 212 and the regeneration area (113) comes in from the opposite side (right).

The air flow in the dehumidification system 200A is as follows.

The outside air (OA) introduced through the valve 291 is cooled and dehumidified by the outside air pre-cooler 220 and passes through the outside air dehumidification area 212 of the rotor 210 . The high-humidity outside air passes through the outside air dehumidifying zone 212 and is dry-dehumidified into medium-temperature and medium-humidity air.

The outside air passing through the outside air dehumidification area 212 is mixed with the circulation air RA introduced through the valve 292 . The mixed air may be cooled by the intermediate pre-cooler 230 to increase dehumidification efficiency.

Most of the mixed air is introduced into the dehumidifying area 211 of the rotor 210 by the fan 250. Low dew point dry air is discharged from the dehumidification zone 211, passes through the aftercooler 270 and the afterheater 280, adjusts the temperature and humidity required in the dry room, and is then supplied to the dry room.

Some mixed air is drawn into purge zone 214. The air passing through the purge zone 214 cools the surface of the rotor, is heated to a regeneration temperature by the reheat heater 240, and then flows into the regeneration zone 213.

The air passing through the regeneration zone 213 moves to the valve 293 opened by the fan 260 and is discharged to the outside (EA). At this time, some of the air that has passed through the regeneration zone 213 may be returned to the inside through the valve 294, mixed with the air that has passed through the purge zone 214, and introduced into the regeneration zone 213. The air that has passed through the regeneration zone 213 is of a lower quality than the absolute humidity of the outside air, and by reusing the exhaust air of good quality, the required amount of outside air can be reduced, and as a result, the load of the outside air precooler 120 is reduced, energy can be saved.

Referring to FIG. 6 , the dehumidification system 200B has a structure changed from the dehumidification system 200A of FIG. 5 to dehumidify with outside air OA without introducing circulating air RA. That is, the dehumidifying system 200B has a structure in which the valve 292 through which the circulating air RA is introduced is omitted or closed.

In the dehumidifying system 200B, it is different from the dehumidifying system 200A in that the outside air passing through the outside air dehumidifying zone 212 is not mixed with the circulating air and flows into the dehumidifying zone 211 of the rotor 210. , the overall operation is the same as that of the dehumidifying system 200A.

FIG. 7 is a diagram illustrating a device arrangement of a dehumidifying system according to an exemplary embodiment.

7 (a) schematically shows the device arrangement of a conventional single-rotor dehumidifier 10, which includes a pre-cooler 12 for external air that cools external air based on the rotor 11 and cooling circulating air. The circulating air precooler 13 may be disposed above the external air precooler 12 in the same direction as the circulating air precooler 13 .

On the other hand, (b) of FIG. 7 schematically shows the device arrangement of the dehumidification system (typically, 100A) of the present disclosure, with the external air pre-cooler 120 and the intermediate pre-cooler based on the rotor 110 ( 130) is located on the other side. Accordingly, the intermediate pre-cooler 130 may be configured on the fan 150 and the outside air pre-cooler 120 may be configured on the after-cooler 170 . Therefore, compared to the conventional single rotor dehumidifier 10, the space required for equipment installation can be reduced.

As such, the dehumidification system of the present disclosure can produce supply air with an ultra-low dew point using a single rotor. In addition, since the dehumidification system of the present disclosure provides a two-rotor effect with a single rotor, space and cost can be reduced.

The embodiments of the present invention described above are not implemented only through devices and methods, and may be implemented through programs that realize functions corresponding to the configuration of the embodiments of the present invention or a recording medium on which the programs are recorded.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims are also included in the scope of the present invention. that fall within the scope of the right.

Claims (6)

It is divided into a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area, and the dehumidification area rotates by a drive motor to pass through the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area in order. A rotor that absorbs moisture contained in the air introduced into the zone and then discharges dehumidified low dew point air;
An external air pre-cooler that cools the introduced external air and discharges it to the external air dehumidifying zone;
An intermediate precooler for cooling mixed air in which external air dehumidified in the external air dehumidification zone and circulating air are mixed;
A fan discharging the air passing through the intermediate pre-cooler to the dehumidifying area of the rotor; and
A reheating heater for heating the air passing through the purge zone to a regeneration temperature and discharging it to the regeneration zone;
When the dehumidifying zone forms an air flow in the direction from the first surface to the second surface of the rotor, 1) a part of the mixed air flows in from the first surface of the purge zone, and flows from the first surface to the second surface. 2) air for regeneration, including air discharged from the purge zone, is heated by the reheating heater and flows in from the second surface of the regeneration zone, and flows from the second surface to the first surface. 3) the air discharged from the outside air precooler flows in from the second surface of the outside air dehumidifying zone to form an air flow from the second surface to the first surface; 4) The air discharged from the outside air dehumidification zone is mixed with the circulating air, cooled by the intermediate pre-cooler, and then introduced into the first surface of the dehumidification zone, so that the dehumidification zone and the purge zone are The dehumidification system is formed by the air flow from the first surface to the second surface, and the outside air dehumidification zone and the regeneration zone are formed in a half-counter pattern formed by the air flow from the second surface to the first surface. . In paragraph 1,
Wherein the external air dehumidification area and the regeneration area have an air pipe built so that air is introduced from one side of the rotor, and air is introduced from the other side of the rotor to the dehumidification area and the purge area. In paragraph 1,
An air pipe is constructed so that some of the air that has passed through the regeneration zone is returned to the inside and mixed with the air that has passed through the purge zone to be introduced into the regeneration zone. It is divided into a dehumidification area, an outside air dehumidification area, a regeneration area, and a purge area, and the dehumidification area rotates by a drive motor to pass through the dehumidification area, the outside air dehumidification area, the regeneration area, and the purge area in order. A rotor that absorbs moisture contained in the air introduced into the zone and then discharges dehumidified low dew point air;
An external air pre-cooler that cools the introduced external air and discharges it to the external air dehumidifying zone;
A fan for discharging the external air dehumidified in the external air dehumidifying region to the dehumidifying region of the rotor; and
A reheating heater for heating the air passing through the purge zone to a regeneration temperature and discharging it to the regeneration zone;
When the dehumidifying area forms an air flow from the first surface to the second surface of the rotor, 1) some of the air discharged from the outside air dehumidifying area flows in from the first surface of the purge area and 2) air for regeneration, including air discharged from the purge zone, is heated by the reheater and introduced from the second surface of the regeneration zone to form an air flow in the direction of the second surface; 3) Air discharged from the outside air pre-cooler flows in from the second surface of the outside air dehumidification zone and flows from the second surface to the first surface. and 4) some air discharged from the outside air dehumidification zone is configured to flow into the first surface of the dehumidification zone, so that the dehumidification zone and the purge zone are separated from the first surface to the second surface. The dehumidification system of claim 1 , wherein the outside air dehumidification zone and the regeneration zone are formed in a half counter pattern formed by an air flow from the second surface to the first surface. In paragraph 4,
Wherein the external air dehumidification area and the regeneration area have an air pipe built so that air is introduced from one side of the rotor, and air is introduced from the other side of the rotor to the dehumidification area and the purge area. In paragraph 4,
An air pipe is constructed so that some of the air that has passed through the regeneration zone is returned to the inside and mixed with the air that has passed through the purge zone to be introduced into the regeneration zone.