JP3259376B2 - Bathroom Dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom dryer for drying clothes and drying the bathroom itself by utilizing the internal space of a bathroom or a unit bath to prevent mold.

[0002]

2. Description of the Related Art Conventionally, as a bathroom dryer for the above purpose, there is, for example, a bathroom dryer shown in FIGS.

A bathroom dryer B shown in FIG.
As described in Japanese Patent Publication No. 98, it is installed on the ceiling of a bathroom 100 such as a unit bath. A circulation channel 105 is formed. An air circulation fan 106 is provided in the middle of the circulation channel 105, and a heater 107 is provided downstream thereof. Further, an exhaust duct is provided at a position of a circulation passage 105 between the air circulation fan 106 and the heater 107.
108 is communicatively connected via a damper 109.

[0004] With this configuration, by driving the air circulation fan 106 simultaneously with heating of the heater 107,
After sucking the humid air in the bathroom 100, the relative humidity of the air in the bathroom 100 can be reduced by heating with the heater 107, and the air can be dried, and the bathroom 100 itself and the bathroom 100 can be dried.
The clothes and the like inside can be dried. In the bathroom dryer B, the heater 107 is always turned on during the drying operation, and
The humid air sucked from 100 is always heated.

On the other hand, in order to prevent the relative humidity of the air in the bathroom 100 from increasing and the drying function from decreasing, a part of the air in the bathroom 100 is removed from the gap between the damper 109 and the partition wall 102.
The air is constantly discharged to the outside through the exhaust duct 108.

The bathroom drier C shown in FIG. 35 has substantially the same configuration as that of the bathroom drier B described above.
The exhaust duct 110 having the exhaust fan 110a is
5 is characterized in that it is directly connected to the ceiling of the bathroom 100 without being connected to it.

A bathroom dryer D shown in FIG. 36 is disclosed in Japanese Patent Application Laid-Open No. 61-289.
As described in Japanese Patent Publication No. 6 (1994), in the circulation flow path 105 formed in the casing 100a, from the upstream side to the downstream side, an evaporator 112, a dehumidifier 113, and an air circulation fan connected to a compressor 111. 106 is provided.

With this configuration, moisture can be removed from the clothes and the bathroom 100 by dehumidification by the dehumidifier 113.

[0009]

However, the above-mentioned conventional bathroom dryers B, C and D still have the following problems to be solved.

That is, in the case of the bathroom dryers B and C, the air heated by the heater 107 is discarded because the air in the bathroom 100 is exhausted at the time of dehumidification.
There have been problems such as an increase in running cost and a decrease in performance (longer drying time).

On the other hand, in order to dehumidify, the compressor 11
The bathroom dryer D, which consists of a refrigerator using No. 1, and a bathroom dryer (not shown) equipped with a heat pump, etc., had a complicated device structure and heavy weight, and also required a dew condensation water treatment pipe. .

The air circulation fan 106 used in the above-mentioned bathroom dryers B, C and D exclusively uses a sirocco fan or the like. However, sirocco fans and the like have a problem that when the air volume is large, the operating noise is significantly increased.

An object of the present invention is to provide a bathroom dryer capable of solving the above-mentioned problems.

[0014]

SUMMARY OF THE INVENTION The present invention is directed to a drying function section comprising an air circulating fan carrying a hygroscopic agent in a middle of a circulating flow path in which dry air and humid air from a bathroom are circulated, Air heating means that is turned on when the agent is regenerated is provided, and the dehumidifying operation in the bathroom and the regenerating operation of the hygroscopic agent are periodically performed by the switching means controlled by the control device. Pertaining to a bathroom dryer.

According to the present invention, a drying function unit provided with a desiccant and an air circulation fan whose rotation direction is switched by a control device are provided in the middle of a circulation passage through which the dry air and the humid air from the bathroom circulate. The present invention relates to a bathroom dryer, wherein a dehumidifying operation in the bathroom and a regeneration operation of the desiccant are periodically performed by switching a rotation direction of the air circulation fan.

Further, in the present invention, a damper is used as the switching means, the drying function part is also used as an air circulation fan carrying a moisture absorbent, and one end of an exhaust duct is provided in the middle of the circulation flow path. , And the humid air is exhausted from the exhaust duct to the outside during the regeneration operation of the desiccant, and the air circulation fan is formed from a multi-disc laminate in which a large number of annular discs are stacked with a gap therebetween. It is also characterized in that a hygroscopic agent is supported on each annular disk, and silica gel is used as the hygroscopic agent.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a bathroom dryer according to the present invention.

Example 1 FIGS. 1 and 2 show a bathroom dryer A.
FIG. 1 shows a configuration during a dehumidifying operation, and FIG. 2 shows a configuration during a regeneration operation.

In FIG. 1, reference numeral 10 denotes a bathroom such as a unit bath in which a bathtub 9 and the like are integrally mounted. In the bathroom 10, a circulation flow path 14 including a suction flow path 11 and a discharge flow path 12 is provided. Both ends are connected. That is, the circulation flow path 14 connects the suction opening side of the suction flow path 11 to the bathroom 10 via the humid air suction port 15 and connects the discharge opening side of the discharge flow path 12 to the dry air discharge port 16.
It is connected to the bathroom 10 via a. In addition, the circulation channel
14 is provided with an air circulation fan 13 and an air heating means H on its way.

As shown in the figure, an exhaust duct 17 communicating outside is branched in the middle of the discharge passage 12. A switching damper 18 is attached to the branch portion as switching means for discharging the dry air or humid air blown from the air circulation fan 13 to the dry air discharge port 16 or the outside, respectively.

The switching operation of the switching damper 18, as shown in FIG.
12 and the air circulation fan 13 can be communicated, and the communication between the exhaust duct 17 and the air circulation fan 13 can be cut off.On the other hand, during the regeneration operation, the exhaust duct 17 and the air circulation fan 13 are communicated, The communication between the discharge passage 12 and the air circulation fan 13 can be cut off.

As will be described later, an air circulation fan 13 composed of a multi-layer disk fan has an air inlet port at the center of its front wall.
13a, and an air outlet 13b on the peripheral wall. The downstream end of the suction flow path 11 and the upstream end of the discharge flow path 12 are connected to the air inlet 13a and the air outlet 13b, respectively.

FIGS. 3 and 4 show a specific configuration of the air circulation fan 13. FIG.

In this embodiment, the air circulating fan 13 surrounds the fan blade F in a cylindrical casing 20, and a base 21 of the fan blade F is mounted on a bottom plate 22 of the casing 20. It is configured by connecting to the output shaft 23.

As shown in the figure, the fan blade F is constructed by attaching a large number of annular disks 24 to the base 21 in a multi-layered state at predetermined intervals via a spacer 24a.

Although the material of the annular disk 24 is not limited at all, for example, a glass sheet (nonwoven fabric) can be suitably used.

As shown in the enlarged view of FIG. 3, a hygroscopic agent 25 such as silica gel is carried on both surfaces of each annular disk 24. Then, in the present embodiment, the drying function section is formed by such a configuration.

As the silica gel, it is desirable to use A-type (average diameter: 20 to 30 °) which exhibits good moisture absorption performance on average even at low humidity.

FIG. 3A shows an isothermal adsorption curve of silica gel. As is clear from the figure, for example, when 300 g of silica gel is supported on the fan blade F composed of a plurality of circular disks 24, about 100 g (300 g ×
(37%).

In FIG. 1, the control device indicated by reference numeral 30 is:
The direction of the switching damper 18 is switched by detecting a predetermined value of a temperature sensor, a humidity sensor, a weight sensor, and the like (not shown), and a timer detecting the elapse of a predetermined time, thereby turning on and off the air heating means H. The air circulation fan 13 is turned on and off, and the air volume is controlled. As the control device 30, conventionally known various configurations can be adopted.However, as described later, when the user presses the operation switch 32 or the temperature adjustment switch 33 of the operation panel 31, and when the dehumidification operation is performed, Any automatic switching of the air circulation fan 13 at the time of automatic switching to the regeneration operation of the adsorbent 25 may be used.

The control device 30 can periodically perform the dehumidifying operation and the regeneration operation. In dehumidifying operation,
The humid air is sucked from the bathroom 10 into the circulation channel 14 and heated by the air heating means H. Thereafter, the moisture contained in the heated air is adsorbed by the desiccant 25 carried on the air circulation fan 13 and the dry air is sucked into the bathroom. In the regeneration operation, for example, air can be discharged from the outside through the
And the air is heated by the air heating means H to remove the moisture adsorbed by the desiccant 25 and exhaust the humid air to the outside.

Next, the operation of the bathroom dryer A having the above configuration will be specifically described with reference to FIGS.

First, the dehumidifying operation will be described with reference to FIG. 1. When the operation switch 32 is pressed, the dehumidifying operation is performed first. That is, the air circulating fan 13 is operated to perform a circulation operation of the air in the bathroom 10. The air volume is maximum. The humid air in the bathroom 10 sucked into the circulation channel 14 by the circulation operation is dehumidified by the desiccant 25 carried on the air circulation fan 13 as shown in FIG. It is.

At this time, the amount of water adsorbed by the air circulation fan 13 is based on the adsorption curve shown in FIG.

The above adsorption curve was obtained for an outer diameter of 250 mm and an inner diameter of 10 mm.
Using a fan blade 20 formed by laminating 51 annular disks 24 each having a thickness of 0 mm, the initial environmental conditions were set to 20 ° C. and 80%, and the suction operation conditions were set to a fan rotation speed of 2000 rpm.

When the adsorption operation is continued, after the adsorption for a certain period of time, the control device 30 automatically performs the regeneration operation.

At the time of the regeneration operation, the rotation of the air circulation fan 13 is maintained as it is, and the switching damper 18 is operated to perform the exhaust operation. At this time, the air heating means H is turned on.

When the air heating means H is turned on, warm air is supplied to the desiccant 25 carried on each of the annular disks 24 of the air circulation fan 13, and as shown in FIG. Work is performed.

When the desorption operation is continued, the air circulation fan
The amount of water desorbed by 13 is based on the desorption curve in FIG.

The above desorption curve shows an outer diameter of 250 mm and an inner diameter of 10 mm.
Using a fan blade 20 formed by laminating 51 0 mm circular disks 24, the initial environmental conditions were 20 ° C, 80%, the regeneration operation conditions were a regeneration temperature of 60 ° C, and a fan rotation speed of 80 rpm. is there.

FIG. 8 shows the adsorption operation / regeneration operation described above.
As shown in FIG. 9, the data of the adsorption / desorption (regeneration) in the case of performing each at intervals of 6 minutes are shown. According to the data, the adsorption amount is about 85 g / sequence, that is, water is adsorbed at a rate of 85 g / 12 minutes.

The adsorption / desorption curve in FIG. 8 is based on the assumption that the initial environmental conditions are 20 ° C. and 80%, and the adsorption operation conditions are the fan rotation speed of 24.
The temperature was set to 00 rpm, and the regenerating operation conditions were obtained using a heater of 1.2 kw at a hot air temperature of 60 ° C.

When the temperature of the hot air of about 60 ° C. is raised by the air heating means H of 1.2 kw during the regeneration operation of the hygroscopic agent 25,
Assuming that the room temperature is 20 ° C from the specific heat of air, the air volume is about 1.4m ³ / min
The temperature sensor to the air circulation fan
It is necessary to provide the suction port 13a of thirteen to control the fan rotation speed or the damper opening.

Of course, the control mechanism may be simplified by previously setting the fan speed and damper opening or the throttle of the exhaust duct 17 to be constant from the PQ characteristics of the air circulation fan 13.

FIGS. 10 and 11 are graphs showing the results when clothes are dried in the above sequence. FIG. 10 shows the case where the horizontal axis represents time in minutes, and FIG. 11 shows the case where the horizontal axis represents time in units of time. FIG. 11 shows only the total moisture weight of clothing.

FIGS. 10 and 11 are obtained by setting the clothes weight at 4 kg (moisture about 2 kg) and the initial environmental conditions at 20 ° C. and 80%.

As is clear from these graphs, the clothes and the like can be completely dried in about 4 hours by using the bathroom dryer A according to the present embodiment.

Further, in FIG.
In addition to the above-mentioned 6 minutes / 6 minutes,
The data of adsorption / desorption (regeneration) in the case of performing min / 8 min and 8 min / 4 min are shown. As is clear from the data, 6
It can be seen that the clothes and the like can be dried in the shortest time in the case of minutes / 6 minutes.

FIGS. 12 and 13 show modifications of the bathroom dryer A according to this embodiment. FIG. 12 shows a case where a reheating circuit or the like is used as the air heating means H. Reference numeral 40 denotes a hot water heat exchanger attached to the suction flow channel 11, and reference numeral 41 denotes a hot water circulation device using a reheating circuit or the like. On the other hand, FIG. 13 shows a case where a water heater is used as the air heating means H.

(Embodiment 2) This embodiment is different from Embodiment 1 in which the air circulation fan 13 is rotated in the same direction through the dehumidifying / heating operation / regeneration operation.
Are rotated in the opposite direction.

FIGS. 14 and 15 show a conceptual configuration of the bathroom dryer A. FIG. 14 shows a configuration during the dehumidifying / heating operation, and FIG. 15 shows a configuration during the regeneration operation. .

In the figure, reference numeral 50 denotes a bathroom such as a unit bath in which a bathtub 49 and the like are integrally mounted. In the bathroom 50, there is provided a circulating flow path 54 comprising a suction flow path 51 and a discharge flow path 52. Both ends are connected. That is, the circulation flow path 54 connects the suction opening side of the suction flow path 51 to the bathroom 50 via the humid air suction port 55, and connects the discharge opening side of the discharge flow path 52 to the dry air discharge port 56.
It is connected to the bathroom 50 via the. In addition, the circulation channel
Numeral 54 is provided with an air circulation fan 53 and an air heating means H on its way.

As shown in the figure, a bypass flow path 57 is provided between the suction flow path 51 and the discharge flow path 52, and a connecting portion between the bypass flow path 57 and the suction flow path 51 is provided. Further, a switching damper 58 as a flow path switching unit is attached.

By the switching operation of the switching damper 58, as shown in FIG. 14, the communication between the bypass flow path 57 and the suction flow path 51 can be cut off during the dehumidifying / heating operation, and also during the regeneration operation. As shown in FIG. 15, the downstream side of the suction channel 51 and the discharge channel
52 can be connected to the downstream side.

The air circulation fan 53 composed of a multilayer disk fan has an air inlet 53a at the center of the front wall and an air outlet 53b at the peripheral wall. The air inlet 53a and the air outlet 53b respectively have
The downstream end of the suction flow path 51 and the upstream end of the discharge flow path 52 are communicatively connected.

Further, an exhaust duct connecting port 53c is provided on the peripheral wall of the air circulating fan 53, which is opposite to the air outlet 53b. The exhaust duct connecting port 53c is connected to the outside. Exhaust duct 59 is connected.

FIGS. 16 and 17 show a specific configuration of the air circulation fan 53. FIG.

The air circulating fan 53 according to the present embodiment has substantially the same configuration as the air circulating fan 13 according to the first embodiment, and similarly carries the moisture absorbent 25. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals. Then, also in the present embodiment, the drying function section is formed by such a configuration.

The operation of the bathroom dryer A according to this embodiment will be described below.

First, the dehumidification / heating operation will be described with reference to FIG. 14. When an operation switch (not shown) is pressed, the dehumidification operation is performed. That is, the air circulation fan 53 operates,
The air circulation operation in the bathroom 50 is performed. The air volume is maximum.
The humid air in the bathroom 50 sucked into the circulation channel 54 by the circulation operation is caused by the moisture absorbent 25 carried by the air circulation fan 53,
It is dehumidified, becomes low humidity, and is returned into the bathroom 50.

After the adsorption for a certain period of time, the regeneration operation is automatically performed by the control device 30.

As shown in FIG. 15, during the regeneration operation, the air circulation fan 53 rotates in the reverse direction, and the switching damper 58 is actuated.
External dry air is sucked into the circulation channel 54 through the bathroom 50 and the discharge channel 52, and the air heating means H is turned on.

By turning on the air heating means H, warm air is generated, and the air is supplied to the desiccant 25 carried on each of the annular disks 24 of the air circulation fan 53. 25 regeneration operations are performed.

Thereafter, the high-temperature and high-humidity air is discharged to the outside through the exhaust duct 59.

The bathroom dryer A according to the present invention has been described with reference to the two embodiments.
The embodiment shown in FIG.

The embodiment shown in FIGS. 18 to 26 is an embodiment in which the air circulation fan 13 rotates in the same direction through the dehumidifying operation and the regenerating operation, similarly to the bathroom dryer A shown in FIG. In the drawing, reference numeral 80 denotes a bypass flow path. Further, in the figure, other components are denoted by the same reference numerals as those of the bathroom dryer A shown in FIG.

In each case, the first damper 60 and the second damper
By the switching operation of the 61 and the third damper 62, dehumidification / regeneration can be performed only by rotating the air circulation fan 13 in the same direction, and stoppage of the air circulation fan 13 at the time of reversal. Loss of startup time can be eliminated. Further, a control circuit for reverse rotation of the air circulation fan 13 can be eliminated. In addition, 63 is an outside air intake duct.

The embodiment shown in FIGS. 22 to 26 is a case where the air heating means is composed of a heater Ha for heating and a heater Hb for regeneration.

The embodiment shown in FIGS. 27 to 30 is an embodiment in which the air circulation fan 53 rotates in the direction opposite to that during the dehumidifying operation during the regeneration operation, similarly to the bathroom dryer A shown in FIG.

The embodiment shown in FIGS. 27 to 29 is a case where the air heating means H is used only as a regeneration heater.
In the examples shown in FIGS.
This is a case where it is composed of a and a regeneration heater Hb.

In the embodiment shown in FIGS. 27 to 33,
70 and 71 are first and second switching dampers, and 73 is an outside air intake duct. Other components, which are the same as those in the second embodiment shown in FIG. 14, are denoted by the same reference numerals.

Further, in all the embodiments including the first and second embodiments, the suction openings of the air circulation fans 13 and 53 are described.
If a humidity sensor is provided in addition to the temperature sensor on 13a and 53a, it is possible to measure the humidity of outside air and inside air (bathroom) in addition to controlling the air volume during regeneration. , Figure
32 and FIGS. 18, 19, 21, 23, 24, 25, 26
In the case of, when the outside air temperature is higher than the inside of the bathroom 10, the regeneration is performed with the outside air. If the outside air temperature is lower than the inside air temperature,
Fresh air is taken in from inside 10 and outside air is introduced into bathroom 10. Further, it is possible to determine whether or not the clothes are dried by the humidity sensor, and it is possible to avoid unnecessary driving.

[0073]

As described above, according to the present invention, in the bathroom dryer, the desiccant is carried in the middle of the circulation flow path in which the humid air suction port and the dry air discharge port respectively communicate with the interior space of the bathroom. The air circulation fan and the air heating means are arranged and one end of the exhaust duct is connected, and a control device capable of controlling the operation of the air circulation fan and the air heating means is provided. In the dehumidifying operation, the humid air is sucked from the bathroom into the circulation channel, the retained moisture is adsorbed by the desiccant, the dry air is heated by the air heating means, and the high-temperature dry air is introduced into the bathroom. In the discharge and regeneration operation, air can be sucked into the circulation flow path from the outside through the bathroom, heated by the air heating means, the adsorbed water in the desiccant is removed, and the humid air can be exhausted to the outside. I have.

Further, in the present invention, the air circulation fan is formed from a multi-layered laminated body in which a large number of annular disks are stacked with a gap therebetween, and a hygroscopic agent is carried on each annular disk, and is used as a hygroscopic agent. Silica gel is used.

Therefore, the following effects are obtained.

Since high-temperature air does not need to be exhausted during dehumidification, the air heated by the air heating means is not wasted and wasteful energy can be saved, and the dehumidifying ability can be improved. In addition, a small amount of exhaust gas is required at the time of regeneration, but it is about half of the total operation time, and the loss of high-temperature air is small.

Since a moisture absorbent carried on the surface of the circular disk is used for dehumidification, a complicated dehumidification mechanism (compressor, refrigerator, condenser, etc.) is not required.

Since the air supply function and the dehumidification function are performed by one air circulation fan, the overall configuration of the bathroom dryer can be simplified.

Since the disk fan is used, noise can be reduced.

Since the moisture absorbent is used, there is no need to treat dew water (drain water).

[0081]

[Brief description of the drawings]

FIG. 1 is a conceptual configuration diagram of a bathroom dryer according to a first embodiment at the time of dehumidification.

FIG. 2 is a conceptual configuration diagram during the reproduction.

FIG. 3 is a sectional front view of the air circulation fan taken along line IV-IV of FIG. 1;

FIG. 3A is a graph showing an isothermal adsorption curve of silica gel.

FIG. 4 is a sectional view taken along line II-II of FIG.

FIG. 5 is an explanatory diagram of a dehumidifying operation of a hygroscopic agent.

FIG. 6 is a graph showing the adsorption / desorption performance of an air circulation fan.

FIG. 7 is an explanatory view of a regenerating operation of the hygroscopic agent.

FIG. 8 is a graph showing an adsorption / desorption sequence of the air circulation fan.

FIG. 9 is a timing chart of the operation of the air circulation fan.

FIG. 10 is a graph of clothes drying time.

FIG. 11 is a graph of clothes drying time.

FIG. 12 is a conceptual configuration explanatory diagram of a modification example.

FIG. 13 is an explanatory diagram of a conceptual configuration of a modification example.

FIG. 14 is a conceptual configuration diagram during dehumidification of a bathroom dryer according to a second embodiment.

FIG. 15 is a conceptual configuration diagram during the reproduction.

FIG. 16 is a sectional front view of the air circulation fan according to III-III in FIG. 15;

FIG. 17 is a sectional view taken along line II of FIG. 16;

FIG. 18 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 19 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 20 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 21 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 22 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 23 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 24 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 25 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 26 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 27 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 28 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 29 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 30 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 31 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 32 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 33 is a conceptual configuration diagram of a bathroom dryer according to another embodiment.

FIG. 34 is a conceptual configuration diagram of a conventional bathroom dryer.

FIG. 35 is a conceptual configuration diagram of a conventional bathroom dryer.

FIG. 36 is a conceptual configuration diagram of a conventional bathroom dryer.

[Sign]

 A Bathroom dryer H Air heating means 10,50 Bathroom 13,53 Air circulation fan 14,54 Circulation channel 15,55 Humid air suction port 16,56 Dry air discharge port 17,59 Exhaust duct 24,54 Annular disk 25 Hygroscopic

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-55000 (JP, A) JP-A-61-106198 (JP, A) JP-A-61-288899 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) D06F 58/10 D06F 58/00 F26B 9/02

Claims (7)

(57) [Claims] A humectant (25) is carried in the middle of a circulation channel (14) through which dry air and humid air from a bathroom (10) circulate .
The drying unit consisting of the air circulation fan (13) and the control unit (3
Air heating means turned ON at the time of reproduction of 0) by the moisture absorbent (25) (H) and the arrangement is ,, dehumidifying operation and moisture absorption of the control device (30) in bathroom (10) by controlled switching means A bathroom dryer characterized in that the regeneration operation of the agent (25) is periodically performed. 2. A drying function unit provided with a hygroscopic agent (25) in the middle of a circulation flow path (14) through which drying air and humid air from the bathroom (10) circulate, and a rotation direction by a control device (30). And an air circulation fan (13) that switches the air circulation fan.
A bathroom dryer characterized in that a dehumidifying operation in the bathroom (10) and a regeneration operation of the hygroscopic agent (25) are periodically performed by switching the rotation direction of (13). 3. The bathroom dryer according to claim 1, wherein said switching means is a damper (18, 58, 60, 61). 4. The bathroom dryer according to claim 2 , wherein the drying function part is also used as an air circulation fan (13) carrying a moisture absorbent (25). 5. An exhaust duct (1) in the middle of said circulation flow path (14).
5. The method according to claim 1, wherein one end of the humidifying agent is connected to exhaust the humid air from the exhaust duct to the outside during the regeneration operation of the moisture absorbent. Bathroom Dryer. 6. An air circulation fan (13) is formed from a multi-disc laminate in which a number of annular discs (24) are stacked with a gap therebetween,
The bathroom dryer according to any one of claims 1 to 5, wherein a hygroscopic agent (25) is supported on each of the annular disks (24). 7. The bathroom dryer according to claim 1, wherein the hygroscopic agent (25) is silica gel.