JPH08145565A - Dehumidifying and drying device - Google Patents

Abstract

PURPOSE: To perform an efficient dehumidifying or drying in an indoor area or an efficient reproducing processing of a rotary type dehumidifying element by a method wherein an electrical heater is installed at a U-turn site between a feeding passage and a discharging passage for divided air after moisture adsorption and an aeration heating surface of a heater is oppositely faced against a reproducing processing part of the rotary type dehumidifying element. CONSTITUTION: Within a reproducing chamber 41 are formed a divided air feeding passage 43 after moisture from a heat recovery processing part of a rotary type dehumidifying element 31 and a discharging passage 44 for returning in U-form to a reproducing processing part 31B of the dehumidifying element 31. The U-turn site between the feeding passage 43 and the discharging passage 44 is provided with an electrical heater 45. A part of wet air A is passed through a heat recoverying part 31C of the dehumidifying element 31 so as to adsorb moisture and concurrently the divided flow air is returned back to heat the heater 45, the reproduced air C heated at a high temperature is passed through a reproducing processing part 31B of the dehumidifying element 31 so as to perform a reproducing processing of the dehumidifying element 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a bathroom in a building, for example.
Dehumidifying / drying device equipped with a rotary dehumidifying element used for dehumidifying and drying in a closed room having a high humidity atmosphere such as a clothes storage room, washroom, changing room, or basement Dehumidifying indoors with elements
This is one that allows the drying process to be performed efficiently.

[0002]

2. Description of the Related Art Generally, a ventilation opening is opened through a makeup grill on a wall surface or ceiling surface of a bathroom or the like as a closed room in a home, and a ventilation fan is attached to the ventilation opening frame of the ventilation opening outside the room. As a result, the room is ventilated.

Further, in the case of performing such dehumidification / drying of the room, a suction port and a blowout port are separately provided on the side wall surface or the ceiling surface, and the dehumidifying / drying device installed outside the room wet air in the room. This is done by sucking air through the suction port to dehumidify and dry it, and by blowing out the dehumidified dry air into the room from the air outlet, so that the bathroom can be used as a drying room for clothes such as laundry. ing.

Conventionally, in this type of dehumidifying / drying device,
Circulating air that blows dry air after the humid air in the room that has been sucked in through the suction port passes through the rotary dehumidifying element provided in the case body to cause the moisture to be adsorbed into the room through the air outlet. In addition to the forced circulation mechanism, the high temperature air is sent to the rotary dehumidifying element to which moisture is adsorbed, so that the rotary dehumidifying element desorbs water and regenerates the rotary dehumidifying element. Some have a configuration as described above.

[0005]

However, in the dehumidifying / drying device having the above-mentioned conventional structure, the forced circulation mechanism for the circulating air for sucking in the humid air in the room and blowing out the dried air after dehumidification, and the regenerating unit for regeneration. Since the air-blowing function that takes in and exhausts air is performed by separate air-blowing mechanisms, two dedicated air-blowing machines are required, the air-blowing system becomes complicated, and the overall size of the device only increases. Not only will it cost more.

Moreover, if the regenerating air is directly taken in from the outside, the temperature and humidity of the outdoor air change greatly, it is difficult to control the heating by the electric heater, and it is necessary to increase the capacity of the heater. Due to the large amount of dirt, there is a problem that the rotary dehumidifying element is heavily soiled and adversely affects the dehumidifying / drying performance and durability.

An object of the present invention is to enable efficient dehumidification / drying treatment of indoor moist air by a rotary type dehumidifying element and regeneration treatment of a rotary dehumidifying element by a simple blowing system, and at the same time, the entire apparatus. Another object of the present invention is to provide a dehumidifying / drying device capable of achieving downsizing and cost reduction.

[0008]

In order to solve the above-mentioned problems, the present invention provides a suction port and an air outlet on a panel surface facing the indoor side of a case body, and introduces from the suction port of this panel surface. The air in the room is allowed to pass through the dehumidification treatment site of the rotary dehumidification element provided in the case body by the forced circulation mechanism by the air blower including the centrifugal air blower to adsorb the moisture in the air. After dehumidifying and drying, the dehumidified and dried air is returned to the room from the air outlet, and high-temperature air is passed through the regenerated treatment site of the rotary dehumidifying element to which the moisture is adsorbed, so that the rotary dehumidification is performed. And a regeneration treatment mechanism for desorbing water from the heating element, and a regeneration treatment mechanism provided so as to heat indoor air through the heat recovery treatment portion of the rotary dehumidifying element after desorption of moisture. With a heating device The regeneration treatment mechanism comprises a regeneration chamber provided at a portion corresponding to the regeneration treatment portion and the heat recovery treatment portion of the rotary dehumidifying element, and the rotary dehumidifying element of the rotary dehumidifying element is provided in the regeneration chamber through a partition wall. An introduction path for the diverted air after adsorbing moisture from the heat recovery processing site and a derivation path formed by making a U turn of the diverted air to the regeneration processing site side of the rotary dehumidifying element are formed, and the derivation path and the aforesaid An electric heating device is provided at a U-turn portion with the introduction path, and a ventilation heating surface of the electric heating device is arranged so as to face the regeneration treatment portion side of the rotary dehumidifying element.

[0009]

That is, according to the present invention, by adopting the above-mentioned structure, a suction port and a blow port are provided on the panel surface of the case body facing the indoor side, and the inside of the room introduced from the suction port of the panel surface is provided. Air is passed through a rotary dehumidification element provided in the case body by a forced circulation mechanism using a blower composed of a centrifugal blower to adsorb moisture in the air to dehumidify and dry it, and then this dehumidification A regeneration processing mechanism for returning the dry air from the outlet to the room and passing the high temperature air through the rotary dehumidifying element to which the moisture is adsorbed to desorb the moisture from the rotary dehumidifying element. After the desorption of moisture, the rotary type dehumidifying element is equipped with a heating device provided in the regeneration processing mechanism so that the air in the room can be heated by passing through the heat recovery processing site, so that the rotation during the dehumidifying / drying operation is performed. Type dehumidifying element And dehumidifying and drying the wet air in the room, at the same time with continuously perform the reproducing process of the rotary dehumidification element, Hakare is simplified overall air distribution system, thereby, can be made compact overall device.

Moreover, the regeneration processing mechanism comprises a regeneration chamber provided at a portion corresponding to the regeneration treatment portion and the heat recovery treatment portion of the rotary type dehumidifying element, and the rotary type dehumidifying element is provided in the regeneration chamber through a partition wall. The introduction path for the shunted air after adsorbing moisture from the heat recovery processing section and the derivation path formed by making a U-turn of the shunted air to the regeneration processing section side of the rotary dehumidifying element are formed together with the derivation path. Since the electric heating device is provided at the U-turn portion with the passage and the ventilation heating surface of the electric heating device is arranged to face the regeneration treatment portion side of the rotary dehumidifying element, the depth dimension of the regeneration chamber is shortened. This makes it possible to reduce the size of the entire device by making it thinner.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an installed state of a dehumidifying / drying device according to the present invention. In FIG. The main body 1 uses, for example, a building bathroom or a dressing room (in the illustrated embodiment, a bathroom is shown as an example) as a dehumidifying / drying room, and is provided in an existing ventilation port opened on the wall surface 101 of the bathroom 100. Makeup grill 10 on ventilation frame 102
It is attached via 3.

The case body 1 is, as shown in FIGS. 2 to 6, a front wall panel 2 facing the inside of the bathroom 100.
The bottom panel 3, the rear wall panel 4, the left and right wall panels 5, 6 and the upper panel 7 are formed in a rectangular parallelepiped shape, and the front wall panel 2, the bottom panel 3 and the rear wall panel 4 are formed. The left and right side wall panels 5 and 6 are integrally assembled so as to be disassembled.

The front wall panel 2 of the case body 1
A mounting port 8 is provided so as to project at the central portion of the above, and the suction port 9 and the blow-out port 10 are vertically adjacent to each other so that the mounting port 8 faces the mounting port 8 on the same plane. Has a function capable of sucking / blowing air, and the outer diameter thereof is the inner diameter of the existing ventilation port frame 102 opened on the wall surface 101 of the bathroom 100, for example, 15
It has a size that can be inserted substantially matching the vertical and horizontal opening dimensions of 0 mm × 200 mm, which allows the case body 1 to be easily and easily attached to the ventilation port frame 102 from the outside of the bathroom 100. ing.

Further, inside the case body 1, there is a primary zone 1A communicating with the suction port 9 of the mounting port 8 and a centrifugal blower type fan such as a sirocco fan as a blower installed in the primary zone 1A. A secondary zone 1B into which the air A in the chamber 100 is introduced by the forced circulation mechanism 20 by the blower 21 and a cylindrical shape described later by passage of the air A in the chamber 100 introduced into the secondary zone 1B. The rotary type dehumidifying element 31 is dehumidified / dried by the dehumidifying / drying mechanism 30 by adsorbing the moisture, and the air B after the dehumidifying / drying is returned from the outlet 10 into the chamber 100. It is divided into a third zone 1C to be circulated through first to third partition panels 11, 12, and 13, respectively.

That is, the inside of the case body 1 is divided into a primary zone 1A and a secondary zone 1B by a first partition panel 11, and a secondary zone 1B and a tertiary zone 1C by the second partition panel 12. The air blower 21 circulates the air A in the bathroom 100 from the suction port 9 to the outlet 10 through the primary zone 1A, the secondary zone 1B and the tertiary zone 1C in order. In addition, the rotary dehumidifying element 31 is connected to the blower 21.
Thus, the water in the air A is adsorbed by contacting with the air A passing through the secondary zone 1B and reaching the tertiary zone 1C.

Further, the suction port 22 located on the front side of the blower 21 constituting the forced circulation mechanism 20 faces the primary zone 1A and its outlet 23 faces the secondary zone 1B, respectively. The drive motor 24, which is integrally provided on the rear surface side, includes the first partition panel 11 and the fourth partition panel 1.
It is located in the quaternary zone 1D divided by 4.

The rotary shaft O1 of the blower 21 and the rotary shaft O2 of the rotary type dehumidifying element 31 constituting the dehumidifying / drying mechanism 30 are attached to the panel surface 2 facing the inside of the chamber 100 of the case body 1. The suction surfaces of the suction ports 22 of the blower 21 diagonally face the suction surfaces of the suction ports 9 while being arranged so as to be adjacent to each other so as to be positioned on the same vertical plane in a parallel state. Are arranged like
As a result, the depth and width of the panel surface 2 facing the inside of the chamber 100 of the case body 1 can be reduced.

In the figure, reference numeral 15 is a fifth partition panel provided on the lower surface of the primary zone 1A. This fifth partition panel 15 together with the first and third partition panels 11 and 13 is a primary zone. 1A and the tertiary zone 1C are divided, and 16 in the drawing is a sixth partition panel, which is the tertiary zone 1
The dehumidified and dried air B introduced into C is blown into the air outlet 10
To form a passage for returning to the inside of the chamber 100.

Furthermore, the air outlet 23 of the blower 21
A blow-out nozzle 25 that also serves as a part 14a of the fourth partition panel 14 is integrally attached to the blow-off nozzle 25, and the blow-out nozzle 26 of the blow-out nozzle 25 faces the secondary zone 1B. An exhaust port 27 corresponding to the ventilation port 4a formed in the rear wall panel 4 is provided in the wall portion 25a facing the side wall panel 4 side.

The blower 21 has a first partition panel 11 and a fourth partition panel 14 which are divided into the primary zone 1A, the secondary zone 1B and the quaternary zone 1D.
While being unitized with the blowing nozzle 25 that also serves as a part 14a of the rotary type dehumidifying element 31, the rotary dehumidifying element 31 is also unitized with the second partition panel 12 that divides the secondary zone 1B and the tertiary zone 1C. As shown in FIG. 7, both of these units can be removed upward while the upper panel 7 of the case body 1 is disassembled.

By the way, reference numeral 17 in the drawing denotes the primary zone 1A.
The first guide portion recessed in the fifth partition wall panel 15 that divides the lower surface portion of the above, and the reference numerals 18 and 18 in the figure are a pair of standing uprights facing each other on the bottom panel 3 in the case body 1. 2A and 2B each show an L-shaped second guide portion, and a lower end portion of the first guide portion 17 in the assembled state of the blower 21 unitized with the first partition panel 11. 21a can be fitted into the second guide portions 18, 18 while the lower end of the second partition wall panel 12 unitized with the rotary dehumidifying element 31 is assembled. The parts 12a are fitted to each other, so that the positioning of both units at the time of assembly can be performed easily and accurately, and the screw fastening work can be facilitated.

Reference numeral 28 in the drawing denotes a damper which is provided in the blow-out nozzle 25 and whose opening and closing is controlled by a step motor 29, for example.
The damper 28 is adapted to block the exhaust port 27 provided in the blow-out nozzle 25 during the dehumidifying / drying operation, while switching to close the blow-out nozzle 25 side of the blow-out nozzle 25 during the ventilation operation. By controlling, the bathroom 100 blown out from the suction port 9 to the secondary zone 1B side through the primary zone 1A by the blower 21 of the forced circulation mechanism 20.
The air A in a wet state inside the exhaust port 27 and the ventilation port 4
It has a ventilation function of directly exhausting air from a.

Further, in the figure, 19A is a first ventilation hole for communicating the secondary zone 1B and the quaternary zone 1D provided on the fourth partition panel 14, and 19B is provided on the first partition panel 11. The forced ventilation mechanism 2 is provided with a second ventilation hole that connects the primary zone 1A and the quaternary zone 1D to each other.
Air A in the chamber 100 introduced into the secondary zone 1B at 0
A cooling mechanism for cooling the drive motor 24 of the blower 21 located in the quaternary zone 1D by forming a passage for sending a part of the air into the quaternary zone 1D and exhausting it into the primary zone 1A. I am configuring.

On the other hand, the rotary type dehumidifying element 31 constituting the dehumidifying / drying mechanism 30 is, for example, a metal silicate gel in which a plurality of metals such as cobalt, iron and manganese are combined with silica gel in a ceramic honeycomb laminated body. Polymerization reaction is performed and the shape of the micropores is finely adjusted so as to be compatible with water molecules, and by fixing many hydroxyl groups in the micropores to increase hydrophilicity, water adsorption and desorption are improved. Has a cylindrical shape,
The diameter of the cylinder is, for example, 20 cm, and the number of rotations is set and controlled so as to be 1/2 rotation per minute.

As shown in FIG. 8, the rotary type dehumidifying element 31 has a dehumidifying treatment portion 31A and a regeneration treatment portion 3 as shown in FIG.
1B and the heat recovery processing portion 31C are positioned so as to correspond in order along the rotation direction X, and the dehumidification processing portion 31A,
The respective areas of the regeneration processing portion 31B and the heat recovery processing portion 31C have an angle ratio θ1: θ2: θ3 (θ1 ≧ θ2 ≧ θ.
3), for example, it is set to 5: 2: 1, and the air flow rate ratio between the dehumidification treatment portion 31A and the regeneration treatment portion 31B is set to, for example, 200 (m ³ / h): 20 (m ³ / h). The rotational drive control is performed by the rotary dehumidifying element 3
A driving belt 35, which is wound around a gear 34 attached to a rotation shaft 33 of the reduction motor 32, is wound around the outer periphery of the belt 1 via a tension spring 36.

Further, the regeneration processing portion 31B and the heat recovery processing portion 3 on the tertiary zone 1C side of the rotary dehumidifying element 31 described above.
1C, a first chamber (regeneration chamber) 41 is provided, and the first chamber 41
As shown in FIG. 6, a partition 42 introduces the split air after the adsorption of water from the heat recovery processing portion 31C of the rotary dehumidifier 31 and the split air into the rotary dehumidifier 31. A derivation path 44 formed by making a U-turn is formed on the side of the regeneration treatment portion 31B of 31. The derivation path 43 and the derivation path 4 are formed.
An electric heater 45 composed of a sheathed heater (PTC heater) as an electric heating device is provided at a U-turn portion of the rotary dehumidifying element and a rectangular ventilation heating surface 45 a of the electric heater 45. It is arranged so as to face the reproduction processing portion 31B of 31.

Further, a portion corresponding to the regeneration treatment portion 31B on the secondary zone 1B side of the rotary dehumidifying element 31 is
A second chamber (exhaust chamber) 46 is provided so as to face the lead-out path 44 of the first chamber 41, and the bottom of the second chamber 46 is exposed to the outside from the lower surface side of the case body 1. The exposed exhaust pipe 47 is connected.

That is, a part of the moist air A introduced from the primary zone 1A to the secondary zone 1B by the blower 21 is transferred to the heat recovery processing portion 31C of the rotary dehumidifying element 31 as shown in FIG. In addition to adsorbing water by dividing the flow, the divided air is passed through the introduction path 44 of the first chamber 41 to make a U-turn in the counterflow direction opposite to the wet air A toward the regeneration treatment portion 31B side to make the PTC heater 45. The regenerative treatment of the rotary dehumidifying element 31 is carried out by passing the regenerated air C heated to the high temperature to the regeneration treatment part 31B of the rotary dehumidifying element 31.

Then, the air D after such regeneration processing is performed.
Is exhausted to the outside from the lower surface side of the case body 1 via an exhaust pipe 47 connected to the second chamber 46, while the dehumidified / dried product that has passed through the dehumidification treatment site 31A is discharged. The air B returns from the outlet 10 into the chamber 100 via the tertiary zone 1C, whereby the chamber 100 is discharged.
It is designed to dehumidify and dry the inside.

In this case, the heat recovery processing portion 31C of the rotary dehumidifying element 31 is configured to collect the air A introduced to the secondary zone 1B side into the rotary dehumidifying element 31 which has become high in temperature in the regeneration processing portion 31B. It also has the function of lowering the temperature of the rotary type dehumidifying element 31 by passing it,
The capacity of the PTC heater 45 as a heating means of the regenerated air C in the heat recovery processing portion 31C is set to, for example, 450 W, whereby the dry air B blown into the chamber 100 from the air outlet 10 after dehumidification / drying. However, the temperature is set to be about 6 degrees higher than room temperature.

By the way, the rotary dehumidifying element 31 is
As shown in FIG. 10, a second partition panel 1 that divides the secondary zone 1B and the tertiary zone 1C in the case body 1
2 is rotatably supported by a seal panel member 51 having a plate thickness of about 1.2 mm and made of stainless steel. The seal panel member 51 has a diameter (for example, 20 cm) of the rotary dehumidifying element 31. A small ventilation hole 52 is provided, and the inner peripheral edge 52a of the ventilation hole 52 seals the outer peripheral edge 31a of the rotary dehumidifying element 31 on the secondary zone 1B side end surface in a close contact state. Has become.

The ventilation hole 52 of the seal panel member 51 has a shaft supporting portion 53 for supporting the rotary dehumidifying element 31 in the center thereof, and the shaft supporting portion 53 has the rotary dehumidifying element 31. A plurality of diametrically-extending couplings arranged so as to be bridged from the inner peripheral edge 52a of the ventilation hole 52 so as to divide 31 into the dehumidification treatment portion 31A, the regeneration treatment portion 31B, and the heat recovery treatment portion 31C. Piece 54,55,5
While being held by 6, the intermediate portion of the rotary dehumidifying element 31 corresponding to the dehumidification treatment portion 31A is crosslinked with a reinforcing connecting piece 57 like the connecting pieces 54, 55 and 56. Is provided.

The reinforcing connecting piece 57 prevents the smoothness of the seal panel member 51 from being lost due to thermal strain under the influence of the rotary dehumidifying element 31 heated to a high temperature. Thereby, the rotary dehumidifying element 31
Outer peripheral edge 31a and the ventilation hole 52 of the seal panel member 51
While maintaining the adhesion between the inner peripheral edge 52a of the above, and preventing the dehumidification efficiency from decreasing due to the generation of a gap between them, it is possible to reduce the thickness of the seal panel member 51 itself. It is designed to reduce the weight of the unit.

Reference numeral 61 in the drawing denotes an air filter provided in the suction port 9 of the mounting opening 8 of the case body 1. The air filter 61 is, as shown in FIGS. 2, 4 and 5, respectively. It has a corrugated shape, which increases the dust collection efficiency by increasing the dust collection area, and at the time of operation, it is possible to absorb noise caused by the blower 21 or the like trying to leak to the outside from the suction port 9. There is.

Further, reference numeral 62 in the drawing denotes a sound insulation member provided on the fifth partition panel 15 of the primary zone 1A in the case body 1, and the sound insulation member 62 is provided with the suction port 9 of the case body 1 and the blower 21. It is provided so as to be opposed to the suction port 22 of the above, and this prevents noise from the blower 21 from leaking outside from the suction port 22 during operation.

In the above embodiment, the blower 21 and the rotary dehumidifying element 31 are arranged in the case main body 1 at substantially symmetrical positions, whereby
It is designed to balance the overall weight of the device.

[0037]

As is apparent from the above description, according to the present invention, a suction port and a blow port are provided on the panel surface of the case body facing the indoor side, and the interior of the room introduced through the suction port of the panel surface. Air is passed through a rotary dehumidification element provided in the case body by a forced circulation mechanism using a blower composed of a centrifugal blower to adsorb moisture in the air to dehumidify and dry it, and then this dehumidification A regeneration processing mechanism for returning the dry air from the outlet to the room and passing the high temperature air through the rotary dehumidifying element to which the moisture is adsorbed to desorb the moisture from the rotary dehumidifying element. During the dehumidifying / drying operation, since the heat recovery processing portion of the rotary dehumidifying element after desorption of water is provided with a heating device provided in the regeneration processing mechanism so as to heat the indoor air by heating. ,
Dehumidification / drying of humid air in the room by the rotary dehumidification element and regeneration treatment of the rotary dehumidification element can be simultaneously performed continuously, and simplification of the entire blower system can be achieved. It is possible to reduce the size of the entire device.

Moreover, the regeneration processing mechanism is composed of a regeneration chamber provided at a portion corresponding to the regeneration treatment portion and the heat recovery treatment portion of the rotary dehumidifying element, and the rotary dehumidifying element is provided in the regeneration chamber through a partition wall. The introduction path for the shunted air after adsorbing moisture from the heat recovery processing section and the derivation path formed by making a U-turn of the shunted air to the regeneration processing section side of the rotary dehumidifying element are formed together with the derivation path. Since the electric heating device is provided at the U-turn portion with the passage and the ventilation heating surface of the electric heating device is arranged to face the regeneration treatment portion side of the rotary dehumidifying element, the depth dimension of the regeneration chamber is shortened. Therefore, it is possible to promote miniaturization by thinning the entire device.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an installation state of a dehumidifying / drying device according to the present invention in a bathroom of a building.

FIG. 2 is a schematic perspective view of the entire structure of the dehumidifying / drying device as seen from the front side.

FIG. 3 is a schematic perspective view of the entire structure of the dehumidifying / drying device as seen from the back side.

FIG. 4 is a schematic cross-sectional plan view showing the overall configuration of the dehumidifying / drying device.

5 is a schematic vertical cross-sectional side view seen from the direction of arrows I-I in FIG.

FIG. 6 is a schematic vertical sectional side view seen from the direction of arrows along the line II-II in FIG.

FIG. 7 is a schematic exploded perspective view showing the unit parts of the air blower and the rotary dehumidifying element which also constitute the dehumidifying and drying apparatus.

FIG. 8 is a schematic explanatory view of a rotary dehumidifying element.

FIG. 9 is an explanatory view showing the principle of the dehumidifying / drying circulation state of the indoor humid air by the rotary dehumidifying element and the regeneration state of the rotary dehumidifying element by the regenerated air.

FIG. 10 is an exploded perspective view of the rotary dehumidifying element unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Case main body, 9 ... Suction port, 10 ... Blow-out port, 20 ... Forced circulation mechanism, 21 ... Air blower (margin air blower), 22 ... Suction port , 23 ... Air outlet, 30 ... Dehumidifying / drying mechanism, 31 ... Rotary dehumidifying element, 31a ... Outer peripheral edge, 31A ... Dehumidifying treatment site, 31B ... Regeneration treatment site , 31C ... Heat recovery processing part, 32 ... Deceleration motor, 41 ... First chamber (regeneration chamber), 42 ... Partition wall, 43 ... Introduction path, 44 ... Outflow path, 45 ... Electric heating device (season heater), 45a ... Ventilation heating surface, 100 ... Bathroom (dehumidifying / drying room), A ... Wet air, B ... Dry air, C ... High temperature Air (regenerated air), D ... Exhaust air.

Claims (1)

[Claims] 1. An air inlet and an air outlet are provided on a panel surface of the case body facing the indoor side, and air in the room introduced from the inlet of the panel surface is forced by a blower including a centrifugal blower. After passing through the dehumidification processing part of the rotary dehumidification element provided in the case body by the circulation mechanism to adsorb moisture in the air to dehumidify and dry, the dehumidified and dried air is discharged from the outlet to the room. In addition, the high temperature air is allowed to pass through the regenerative treatment part of the rotary dehumidifying element to which the moisture is adsorbed, thereby desorbing the water from the rotary dehumidifying element, and And a heating device provided in the regeneration processing mechanism so as to heat indoor air through a heat recovery treatment site of the rotary dehumidification element after desorption, wherein the regeneration processing mechanism is the rotary dehumidification element. Regeneration processing part And a heat recovery treatment site, which is composed of a regeneration chamber provided in a portion corresponding to the heat recovery treatment region, and a passage for introducing the diverted air after moisture adsorption from the heat recovery treatment region of the rotary dehumidifying element through a partition wall in the regeneration chamber, A derivation path is formed by making a U-turn of the split air toward the regeneration treatment site side of the rotary dehumidifying element, and an electric heating device is provided at a U-turn site between the derivation path and the introduction path. A dehumidifying / drying device, characterized in that the ventilation heating surface of the device is arranged so as to face the regeneration treatment site side of the rotary dehumidifying element.