JP3128439B2 - Dehumidifying and drying equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a bathroom for a building,
The present invention relates to a dehumidifying and drying apparatus provided with a rotary dehumidifying element used for dehumidifying and drying in a closed room in a high humidity atmosphere such as a clothes storage room or a basement.

[0002]

2. Description of the Related Art In general, for example, a ventilation opening is opened through a decorative grill on a wall surface or a ceiling surface of a bathroom or the like as a closed room in a house, and a ventilation fan is provided on a mounting frame provided in the ventilation opening on the outside of the room. By installing it, the room is ventilated.

In order to perform such indoor dehumidification and drying, a suction port and an air outlet are separately provided on a side wall surface or a ceiling surface, and the indoor humid air is installed by a dehumidification / drying device installed outside the room. Is carried out by sucking the air from the suction port to dehumidify and dry, and by blowing the dehumidified dry air into the room from the air outlet, whereby the bathroom is used as a drying room for clothes such as laundry. ing.

Conventionally, in this type of dehumidifying and drying apparatus,
Circulating air that allows the humid air in the room sucked from the suction port to pass through the rotary type dehumidifying element provided in the case main body to cause the moisture to be adsorbed, and that the dry air is blown into the room from the outlet through the outlet. The forced circulation mechanism is provided, and high-temperature air is supplied to the rotary dehumidifying element to which moisture has been adsorbed, thereby causing the rotary dehumidifying element to desorb moisture and regenerate the rotary dehumidifying element. There is a device having a configuration as described above.

[0005]

However, in the dehumidifying / drying apparatus having the above-mentioned conventional structure, a forced circulation mechanism for circulating air for sucking in humid air in the room and blowing out dry air after dehumidification, Since the air blowing function for taking in and discharging air is performed by separate air blowing mechanisms, two dedicated air blowers are required, which complicates the air blowing system and increases the size of the entire device. Instead, it becomes expensive.

Moreover, if air for regeneration is directly taken in from outside the room, the temperature and humidity of the outdoor air change greatly, making it difficult to control the heating by the heater and increasing the capacity of the heater.
In addition, since there is much dirt in the outdoor air, there is a problem that the rotary type dehumidifying element is heavily stained and adversely affects the dehumidifying / drying performance and durability.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a simple ventilation system for dehumidifying and humidifying indoor humid air by a rotary dehumidifying element.
An object of the present invention is to provide a dehumidifying / drying apparatus capable of efficiently performing a drying process and a regeneration process of a rotary dehumidifying element, and reducing the size and cost of the entire apparatus.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a processing chamber in a case main body having a suction port and a discharge port facing the chamber, and a processing chamber in a case body having a rotary dehumidifying element interposed therebetween. After passing the air in the chamber introduced into the primary side of the processing chamber through the introduction passage from the suction port to the rotary type dehumidifying element, the secondary side of the processing chamber A forced circulation mechanism with a single blower that returns to the chamber from the outlet through the outlet, the rotary dehumidifying element includes a dehumidification processing part, a regeneration processing part, and a heat recovery processing part in order along the rotation direction. Correspondingly, when the air introduced into the primary side of the processing chamber passes through the rotary dehumidifying element, the dehumidifying processing part causes the rotary dehumidifying element to adsorb moisture, The processing part is before the moisture is adsorbed in the dehumidification processing part. High-temperature air is passed through the rotary dehumidifying element to cause the rotary dehumidifying element to desorb moisture, and the heat recovery processing part is heated at the regeneration processing part. A dehumidifying / drying device for lowering the temperature of the rotary dehumidifying element by passing air through the rotary dehumidifying element, wherein the rotary type dehumidifying device is configured to heat the air that has passed through the heat recovery processing site on the secondary side of the processing chamber. While a regeneration chamber for passing through the regeneration processing portion of the element is disposed on the primary side of the processing chamber facing the regeneration chamber and the rotary dehumidifying element, the regeneration of the rotary dehumidifying element is performed. An exhaust chamber for exhausting the high-temperature air that has passed through the processing portion to the outside of the case main body, and an exhaust pipe connected to the exhaust chamber is arranged to bypass the processing chamber; In front of the department To face the outside of the case body is obtained by a configuration in which a.

Further, the present invention provides the above-mentioned configuration,
In this configuration, a large number of fins are provided on the outer periphery of the exhaust pipe.

[0010]

According to the present invention, by employing the above structure, the processing chamber in the case main body having the suction port and the air outlet facing the chamber has a primary side and a secondary side sandwiching the rotary dehumidifying element. After passing the air in the chamber introduced into the primary side of the processing chamber through the inlet from the suction port to the rotary type dehumidifying element, the air is passed from the outlet through the secondary side of the processing chamber to the chamber. A dehumidification processing portion for providing a forced circulation mechanism by a single blower to return, and sequentially adsorbing moisture from air passing through the rotary dehumidifying element along the rotation direction of the rotary dehumidifying element; High-temperature air is passed through the rotary dehumidifying element where moisture is adsorbed at the site, and desorption of moisture is performed by the regenerative processing part, and air passes through the rotary dehumidifying element that has become hot at the regenerating processing part To reduce the temperature of the rotary dehumidifying element. During the dehumidification / drying operation, the dehumidification / drying of the humid air in the room by the rotary dehumidifying element and the regeneration processing of the rotary dehumidifying element are simultaneously and continuously performed during the dehumidifying / drying operation. Can be done.

Further, since the forced circulation mechanism comprising a single blower simultaneously circulates and sucks in the indoor air to supply and exhaust the regenerated air, the size and weight of the system can be reduced by simplifying the blowing system. Can be achieved.

On the secondary side of the processing chamber, a regeneration chamber for heating the air passing through the heat recovery processing site and then passing the air through the regeneration processing site of the rotary dehumidifying element is arranged. An exhaust chamber for exhausting the high-temperature air that has passed through the regeneration processing portion of the rotary dehumidifying element to the outside of the case main body is disposed on the primary side of the opposite processing chamber with the mold dehumidifying element interposed therebetween. The exhaust pipe connected to the chamber is detoured along the circumferential direction of the rotary dehumidifying element, and the tip of the exhaust pipe faces outside the case body. The heat inside the processing chamber is warmed by the heat exchange effect due to the heat radiation of the exhaust pipe heated by the high-temperature air after passing through the part, whereby the temperature of the dry air is increased, and the indoor drying effect is improved.

Further, it is possible to reduce the capacity of an electric heater as a heating means for heating and raising the temperature of the air which passes through the regeneration processing portion of the rotary dehumidifying element.

Further, by providing a large number of fins on the outer periphery of the exhaust pipe, the heat exchange of air in the processing chamber is promoted.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 schematically shows the entire structure of a dehumidifying and drying apparatus according to the present invention. In FIG. is there.

On the front surface 1a of the case body 1, a mounting opening 2 having a vertical and horizontal outer frame size of 150 mm × 200 mm is provided so as to protrude, for example. By forming the air outlet 4 so as to be adjacent to the upper and lower sides, it has a function that air can be sucked in / out on the same plane.

That is, as shown in FIGS. 2 to 4, the case main body 1 is provided with a ventilation port frame 1 of a ventilation port opened on a wall surface 101 of a bathroom 100 as a dehumidifying and drying room of a building, for example.
The case main body 1 is fixed to the outer wall surface side of the bathroom 100 by appropriate fixing means so that the mounting opening portion 2 can be attached to the bathroom 100 from the outside to the indoor side. The suction port 3 and the air outlet 4 of the case main body 1 are supported by the
No. 00 is arranged so as to be open on the same plane of the wall surface 101.

The mounting board 50 is formed of an iron plate 51 having a smaller area than the front surface 1a of the case body 1, and a tubular portion 52 which can be fitted into the ventilation opening frame 102 near the center thereof. After the tubular portion 52 is fitted into the ventilation port frame 102, the iron plate 5
1 is fixed to a part such as a beam of a building where the strength is sufficiently maintained by screws or the like.

Further, the hook 5 is attached to the mounting board 50.
3 are provided at a plurality of places, and the front surface 1a of the case body 1 is hooked and supported by these hooks 53, and then the case body 1 is fixed to the mounting board 50 with screws or the like.

In the figure, reference numeral 103 denotes a decorative grill which is detachably provided on the front side of the ventilation port frame 102 on the side of the bathroom.
The lower outlet 104 is provided with a wind direction adjusting mechanism 105 comprising a plurality of wind direction plates that can be adjusted to rotate vertically and horizontally.

The inside of the case body 1 has an introduction passage 5 communicating with the suction port 3 of the mounting opening 2 and a processing chamber 7 communicating with a leeward side of the introduction passage 5 through a communication port 6. The communication port 6 communicating with the processing chamber 7 is provided with a damper 8 that is controlled to open and close by, for example, a step motor. The damper 8 is connected to the introduction passage 5 and the processing chamber 7 during ventilation operation. Is automatically or manually switched so as to close the communication port 6 between the suction port 3 and the introduction passage 5 sucked from the suction port 3 by a forced circulation mechanism described later.
Venting the humid air A in the bathroom 100 introduced into the case body 1 directly to the outside of the case body 1 from the ventilation port 9 opened on the side of the terminal side of the introduction passage 5 without passing through the processing chamber 7. Has functions.

On the other hand, during the dehumidifying / drying operation, the damper 8 can shut off the introduction passage 5 on the side of the ventilation port 9.

The forced circulation mechanism comprises a single centrifugal blower 10 such as a sirocco fan. The suction port 11 of the blower 10 is located at the position corresponding to the suction port 3 and the discharge port 12 thereof. The introduction passage 5
And the humid air A in the room from the suction port 3 is blown toward the processing chamber 7 by the pushing and blowing action.

Further, the processing chamber 7 is provided with the introduction passage 5.
Are divided vertically into a primary side 7A communicating with the air outlet 4 and a secondary side 7B communicating with the air outlet 4. The primary side 7A and the secondary side 7B
The rotation type dehumidifying element 20 is controlled by a rotation drive unit, which will be described later, and its rotation axis O is connected to the blower 10. It is installed horizontally so as to rotate horizontally in the clockwise direction X by pivotally supporting it in the direction perpendicular to the suction direction of the humid air A by.

As shown in FIG. 5, the rotation driving means comprises a plurality of projections 21 formed on the outer peripheral surface of the rotary type dehumidifying element 20 at appropriate intervals in the circumferential direction. The rotation type dehumidification is performed by applying a belt so that at least one of the projections 21 always meshes with a tooth portion 24 of a driving belt 23 which is wound around a gear attached to a rotation shaft of a reduction motor 22 which is a driving motor. The driving element 23 is configured to be rotationally controlled at a predetermined number of revolutions. The driving belt 23 can be maintained in a tensioned state during driving by a tension spring 25.

The rotary dehumidifying element 20 includes a dehumidification processing part 20A, a regeneration processing part 20B, and a heat recovery processing part 20B.
C correspond in order along the rotation direction X, and the secondary side 7B of the processing chamber 7 of the rotary dehumidifying element 20 corresponding to the heat recovery processing part 20C is provided with the processing chamber 7. A part of the humid air A introduced into the primary side 7A is taken in, diverted, and U-turned to the regeneration processing portion 20B side, so that the regenerated air C flows in a countercurrent state opposite to the humid air A. A regeneration chamber 31 capable of supplying air is provided, and an electric heater (PTC heater) 32 as a heating unit is provided in the regeneration chamber 31.

In the figure, reference numeral 33 denotes the reproduction processing portion 20B.
Primary side 7 of processing chamber 7 of rotary dehumidifying element 20 corresponding to
A, an exhaust chamber in which the rotary dehumidifying element 20 is interposed and arranged opposite to the regeneration chamber 31;
An exhaust pipe 34 is connected to the exhaust chamber 33. The exhaust pipe 34 can exhaust the exhaust air D after heating and regeneration of the rotary dehumidifying element 20 at the regeneration processing portion 20B to the outside of the case body 1. A ventilation resistance member such as a wire mesh (not shown) for preventing intrusion of rainwater or the like and influence of external wind pressure is disposed therein as required.

In this case, the humid air A during the ventilation operation
With the exhaust of the exhaust air D at the time of the dehumidifying / drying operation, the air corresponding to the exhaust amount is supplemented by new outdoor air flowing from a door gallery, a gallery, or the like provided in the bathroom 100.

That is, the exhaust chamber 33 is provided in FIG.
As shown in FIG. 8, the rotary type dehumidifying element 20 and the partition wall 13 are interposed therebetween so as to face the regeneration chamber 31, and the flange portion 33a of the exhaust chamber 33 and the flange portion of the regeneration chamber 31 are arranged. The nuts 36 are screwed into the three long bolts 35 inserted between the first and second portions 31a via the springs 37 so that the nuts 36 are elastically connected to each other in the pulling direction. The rotation type dehumidifying element 20
So that the flange portion 33a of the exhaust chamber 33 and the flange portion 31a of the regeneration chamber 31 maintain close contact with the processing surface of the rotary dehumidifying element 20. ing.

In the figure, reference numeral 38 denotes a seal member interposed between the processing surface of the rotary dehumidifying element 20 and the flange 33a of the exhaust chamber 33 and the flange 31a of the regeneration chamber 31.

An exhaust pipe 34 connected to the exhaust chamber 33 is disposed on the primary side 7A in the processing chamber 7 so as to bypass in the circumferential direction along the rotation direction X of the rotary dehumidifying element 20, for example. It is inclined downward from the entrance side to the exit side, and a large number of fins 34a are provided on the outer periphery thereof.

In the figure, reference numeral 41 denotes an air filter provided in the suction port 3 of the mounting port 2 of the case body 1.

According to the dehumidifying / drying apparatus according to the present invention, as shown in FIG. 6, during the dehumidifying / drying operation, the blower 10 is driven into the case body 1 from the suction port 3 to drive the inside of the bathroom 100 into the case body 1. The humid air A is guided to the introduction passage 5 and is introduced into the primary side 7A of the processing chamber 7 through the communication port 6, and the humid air A introduced to the primary side 7A of the processing chamber 7
Is dehumidified and dried by passing moisture through the rotary dehumidifying element 20 when passing through the rotary dehumidifying element 20, and the dehumidifying and drying air B is The air is discharged to the secondary side 7B of the processing chamber 7 and blown out of the outlet 4 into the bathroom 100, thereby constituting a forced circulation mechanism of room air.

That is, the dehumidification processing section 20A passes the wet air A introduced into the primary side 7A of the processing chamber 7 through the rotary dehumidifying element 20 to adsorb moisture to perform dehumidification and drying processing. It has a function of discharging the dehumidified dry air B to the secondary side 7B of the processing chamber 7,
0B is obtained by allowing high-temperature air (regenerated air) C to pass through the rotary dehumidifying element 20 to which moisture has been adsorbed at the dehumidification processing site 20A, thereby causing the rotary dehumidifying element 20 to desorb moisture. It has the function of performing playback processing.

Further, the heat recovery processing section 20C allows the moist air A to pass through the rotary type dehumidifying element 20 which has become hot at the regeneration processing section 20B, and
In this case, a part of the humid air A introduced into the primary side 7A of the processing chamber 7 is taken and diverted in the regeneration chamber 31, whereby the regeneration processing is performed. With the function of recovering the heat of the rotary dehumidifying element 20 after the regeneration processing heated at the portion 20B, and having the function of heating and raising the temperature of the regeneration air C by the electric heater 32 and sending it to the regeneration processing portion 20B. It is.

The rotary dehumidifying element 20 is formed by polymerizing a metal silicate gel obtained by combining, for example, silica gel with a plurality of metals such as cobalt, iron and manganese in a ceramic honeycomb laminate and adapting to water molecules. Along with fine-tuning the micropore shape so as to increase the number of hydroxyl groups in the micropore and increase the hydrophilicity, it has a cylindrical shape with improved moisture adsorption and desorption properties, The diameter of the cylinder is, for example, 20 cm,
The number of revolutions is set and controlled so as to make a half revolution per minute.

A dehumidification processing portion 20A corresponding to the rotary type dehumidifying element 20 in order along the rotation direction X,
The area of each of the regeneration processing part 20B and the heat recovery processing part 20C is determined by the angle ratio θ1: θ2: θ3 (θ1 ≧ θ2 ≧ θ
3), the air flow rate is set to, for example, 5: 2: 1, and the air volume ratio between the dehumidification processing part 20A and the regeneration processing part 20B is set to, for example, 200 (m ³ / h): 20 (m ³ / h). Although it is set, the diameter, the number of rotations, and the angular ratio θ1 of the dehumidification processing part 20A, the regeneration processing part 20B, and the heat recovery processing part 20C of the rotary type dehumidifying element 20 are set.
It goes without saying that the angle θ2: θ3 or the air volume (m ³ / h) ratio between the dehumidification processing part 20A and the regeneration processing part 20B can be changed according to the dehumidification / drying ability.

Further, the capacity of the electric heater 32 as a means for heating the regenerated air C at the heat recovery processing site 20C is as follows:
For example, it is set to 450 W, whereby the temperature of the dry air B blown into the room from the outlet 4 after dehumidification and drying is about 6 degrees higher than the room temperature.

In the above-described embodiment, the rotary type dehumidifying element 20 has been described as being installed horizontally so as to rotate horizontally in the clockwise direction X. O may be installed vertically in such a manner that it is pivotally supported in the horizontal direction in the left and right direction with respect to the suction direction of the indoor air A by the blower 10 and rotates vertically in the clockwise direction X. The selection is arbitrary.

[0040]

As is apparent from the above description, according to the present invention, the processing chamber in the case body having the inlet and the outlet facing the chamber is connected to the primary side and the secondary side with the rotary dehumidifying element interposed therebetween. After passing the air in the chamber introduced into the primary side of the processing chamber through the inlet from the suction port to the rotary type dehumidifying element, the air is passed from the outlet through the secondary side of the processing chamber to the chamber. A dehumidification processing portion for providing a forced circulation mechanism by a single blower to return, and sequentially adsorbing moisture from air passing through the rotary dehumidifying element along the rotation direction of the rotary dehumidifying element; High-temperature air is passed through the rotary dehumidifying element where moisture is adsorbed at the site, and desorption of moisture is performed by the regenerative processing part, and air passes through the rotary type dehumidifying element that has become hot at the regenerating processing part Heat to lower the temperature of the rotary dehumidifying element. The dehumidifying / drying operation is performed simultaneously with the dehumidifying / drying operation of the indoor humid air in the room and the regenerating process of the rotary type dehumidifying element are performed simultaneously and continuously in order to provide the corresponding collecting processing part. be able to.

Further, since the forced circulation mechanism consisting of a single blower simultaneously circulates and inhales and regenerates the regenerated air by circulating and taking in the indoor air, the size and weight of the system can be reduced by simplifying the blowing system. And cost can be reduced.

On the secondary side of the processing chamber, a regenerating chamber for heating the air passing through the heat recovery processing part and then passing the heated air to the regenerating processing part of the rotary dehumidifying element is arranged. An exhaust chamber for exhausting the high-temperature air that has passed through the regeneration processing portion of the rotary dehumidifying element to the outside of the case main body is disposed on the primary side of the opposite processing chamber with the mold dehumidifying element interposed therebetween. While arranging the exhaust pipe connected to the chamber so as to bypass the processing chamber,
Since the end of the exhaust pipe faces the outside of the case body, the processing is performed by the heat exchange effect due to the heat radiation of the exhaust pipe heated by the high-temperature air after passing through the regeneration processing part of the rotary dehumidifying element. Since the indoor air can be warmed, and thereby the temperature of the dry air can be increased, the indoor drying effect can be improved.

Further, it is possible to reduce the capacity of the electric heater as a heating means for heating and raising the temperature of the air which passes through the regeneration processing portion of the rotary dehumidifying element.

Furthermore, by providing a large number of fins on the outer periphery of the exhaust pipe in the second aspect, the heat exchange effect of the air in the processing chamber is promoted, and the dehumidification and drying of the indoor air can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing one embodiment of a dehumidifying and drying apparatus according to the present invention.

FIG. 2 is a schematic explanatory view showing an entire configuration of the building in a state where the building is attached to a bathroom.

FIG. 3 is a schematic cross-sectional view showing an enlarged state of attachment to a ventilation port frame.

FIG. 4 is a schematic longitudinal sectional view showing an enlarged state of attachment to the ventilation port frame.

FIG. 5 is a schematic explanatory view of the rotary dehumidifying element.

FIG. 6 is an explanatory view showing in principle the dehumidification / drying circulation state by the rotary dehumidifying element and the regeneration state of the rotary dehumidifying element by regenerated air.

FIG. 7 is a schematic explanatory view showing an assembled state of a regeneration chamber and an exhaust chamber with respect to the rotary dehumidifying element.

FIG. 8 is a schematic enlarged vertical sectional view showing a main part of the rotary dehumidifying element, in which a regeneration chamber and an exhaust chamber are assembled.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Case main body, 1a ... Front part, 3 ... Suction port, 4 ... Outlet, 7 ... Processing chamber, 7A ... Primary side, 7B ... Secondary side, 9 ... ventilator, 10 ... forced circulation mechanism (blower), 20 ... rotary type dehumidifying element, 20A ... dehumidification processing part, 20B ... regeneration processing part, 20C ... heat recovery Processing site, 31: regeneration chamber, 32: heating means (electric heater), 33: exhaust chamber, 34: exhaust pipe, 34a: fin, 100: chamber (bathroom), A: wet air, B: dry air, C: regeneration air, D: exhaust air.

Continuation of the front page (56) References JP-A-57-72031 (JP, U) US Patent 5,147,420 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 7/08 101 F24F 1/00 451 F28D 19/04

Claims (2)

(57) [Claims] A processing chamber in a case body having a suction port and an air outlet facing the chamber is divided into a primary side and a secondary side with a rotary dehumidifying element interposed therebetween. Forced circulation by a single blower after passing air in the chamber introduced into the primary side of the processing chamber from the suction port through the introduction passage and returning to the chamber from the outlet through the secondary side of the processing chamber A mechanism is provided, wherein the rotary dehumidifying element has a dehumidification processing part, a regeneration processing part, and a heat recovery processing part sequentially corresponding to each other along a rotation direction, and the dehumidification processing part is introduced into a primary side of the processing chamber. When the air passed through the rotary dehumidifying element, the rotary dehumidifying element causes the rotary dehumidifying element to adsorb moisture, and the regenerating portion has the rotating dehumidifying portion adsorbed moisture. High-temperature air is passed through the dehumidifying element, The element is allowed to desorb moisture, and the heat recovery processing section is configured to pass air through the rotary dehumidifying element, which has been heated at the regeneration processing section, to reduce the temperature of the rotary dehumidifying element. An apparatus, wherein a regeneration chamber for heating air that has passed through the heat recovery processing site and then passing the heated air through a regeneration processing site of the rotary dehumidifying element is disposed on a secondary side of the processing chamber. And an exhaust chamber for exhausting high-temperature air that has passed through a regeneration processing portion of the rotary dehumidifying element to the outside of the case body, on the primary side of the processing chamber opposed to the rotary dehumidifying element. And an exhaust pipe connected to the exhaust chamber is arranged so as to bypass the processing chamber, and a distal end of the exhaust pipe faces outside the case body. 2. A processing chamber in a case body having a suction port and an air outlet facing the chamber is divided into a primary side and a secondary side with a rotary dehumidifying element interposed therebetween. Forced circulation by a single blower after passing air in the chamber introduced into the primary side of the processing chamber from the suction port through the introduction passage and returning to the chamber from the outlet through the secondary side of the processing chamber A mechanism is provided, wherein the rotary dehumidifying element has a dehumidification processing part, a regeneration processing part, and a heat recovery processing part sequentially corresponding to each other along a rotation direction, and the dehumidification processing part is introduced into a primary side of the processing chamber. When the air passed through the rotary dehumidifying element, the rotary dehumidifying element causes the rotary dehumidifying element to adsorb moisture, and the regenerating portion has the rotating dehumidifying portion adsorbed moisture. High-temperature air is passed through the dehumidifying element, The element is allowed to desorb moisture, and the heat recovery processing section is configured to pass air through the rotary dehumidifying element, which has been heated at the regeneration processing section, to reduce the temperature of the rotary dehumidifying element. An apparatus, wherein a regeneration chamber for heating air that has passed through the heat recovery processing site and then passing the heated air through a regeneration processing site of the rotary dehumidifying element is disposed on a secondary side of the processing chamber. And an exhaust chamber for exhausting high-temperature air that has passed through a regeneration processing portion of the rotary dehumidifying element to the outside of the case body, on the primary side of the processing chamber opposed to the rotary dehumidifying element. Is arranged, and an exhaust pipe connected to the exhaust chamber is arranged so as to bypass the processing chamber, and the tip of the exhaust pipe faces outside the case body,
A dehumidifying and drying apparatus, wherein a number of fins are provided on an outer periphery of the exhaust pipe.