JP5538622B2 - Bathroom Dryer - Google Patents

Description

  The present invention relates to a bathroom dryer installed on the ceiling or upper side wall of a bathroom and ventilating, drying, and heating the bathroom.

  Conventionally, many proposals have been made regarding bathroom dryers that ventilate, dry, and heat the bathroom air. In addition, several proposals have been made to reduce the pressure loss and noise of the air passage configuration of the bathroom dryer and the air passage.

  For example, the blower described in Patent Document 1 sucks the air through an intake port that sucks in indoor air, an exhaust port that discharges air sucked from the intake port, and the intake port. A main body case having a fan, a damper that guides the air sucked by the fan to the discharge port, a fan housing that houses the fan, and a blower that blows the air from the fan The body case is formed with a tongue-like wall portion that forms a boundary between the fan housing portion and the blower portion, and the side wall of the tongue-like wall portion on the blower portion side is formed by a concave curved surface. .

  By forming the side wall of the tongue-shaped wall part that forms the boundary between the fan housing part and the air blower part on the concave curved surface, the air flowing into the air blower part is spirally swirled and guided to the discharge port. The air staying in the air blowing part is prevented, the air directed toward the discharge port is made uniform, and noise caused by the difference in air density is reduced. In addition, when the air discharged from the discharge port is heated by a heater or the like due to the flow of swirling air, the air passing through the heater can be made uniform, and temperature unevenness of the air heated by the heater can be reduced. Is possible.

  In addition, since the concave curved surface is formed by a curved surface whose curvature increases as it goes downward from the upper surface side of the main body case, air with a high wind speed swirls with a small radius of curvature due to a curved surface with a small curvature, and the wind speed is slow Air can form a swirling flow with a large radius of curvature due to a curved surface having a large curvature, and can actively create a spiral air flow. Further, the opposing side wall facing the concave curved wall surface is constituted by a curved surface corresponding to the concave curved surface, and a mortar-shaped bay-shaped recess is formed by the concave curved surface and the opposing side wall, thereby further increasing the spiral flow. It is easy to generate.

JP 2007-205642 A

  However, the air blower described in Patent Document 1 needs to guide the swirling flow to the discharge port in order to uniformize the air passing through the heater, and it is necessary to form the discharge port in a circular or square shape. is there. Since the square or circular outlet is provided, there is a problem that it is difficult to reduce the size of the blower. In order to reduce the size of the blower, for example, if the discharge port is rectangular and the length in the longitudinal direction of the blower is shortened, it passes through the rectangular discharge port and the rectangular heater when a swirling flow is generated. It becomes difficult to make the air velocity distribution uniform.

  The present invention has been made in view of the above, and while being small in size, it is possible to uniformize the flow of air passing through the heating unit and uniform the temperature distribution of the air blown from the heating unit, and It aims at obtaining the bathroom dryer which can reduce the pressure loss and noise of a road.

In order to solve the above-described problems and achieve the object, the present invention is formed by a housing and a bottom plate, a circulation suction port and a blowing guide grill are provided downward, a ventilation connection port is provided upward, and inside, A circulation fan, a circulation air passage provided with a damper for opening and closing the ventilation connection port and a heating unit, a circulation unit installed on the ceiling of the bathroom, and a ventilation air passage provided with an exhaust port, A bathroom dryer having a ventilation unit connected to a ventilation connection port of the circulation unit, wherein the wind flowing through the circulation air passage is once contracted to the upstream bottom plate of the heating unit of the circulation air passage. was caught downstream, the heating portion directing in a direction, a resistive element, such as a weir across said air circulation duct is provided, the resistor is downstream of said air circulation duct the damper is opened the ventilation connecting port Front side when closed Characterized in that it is covered by the damper.

  Although the bathroom dryer of the present invention is small in size, the flow of air passing through the heating unit can be made uniform, the temperature distribution of the air blown from the heating unit can be made uniform, and the pressure loss and noise of the air passage can be made. Can be reduced.

FIG. 1 is a sectional view showing Embodiment 1 of a bathroom dryer according to the present invention. FIG. 2 is a cross-sectional view showing the downstream side of the circulation air passage when the rotational position of the damper is the ventilation position. FIG. 3 is a cross-sectional view showing the downstream side of the circulation air passage when the rotational position of the damper is in a dry and cool air position. FIG. 4 is a cross-sectional view showing the downstream side of the circulation air passage when the rotational position of the damper is the wind drying position. FIG. 5 is a cross-sectional view showing the downstream side of the circulation air passage when the rotational position of the damper is the heating position. FIG. 6 is a cross-sectional view illustrating a drive unit of the damper according to the first embodiment. FIG. 7 is a cross-sectional view showing the flow of air on the downstream side of the circulation air passage when no resistor is installed. FIG. 8 is a cross-sectional view showing the flow of air on the downstream side of the circulation air passage when a resistor is installed. FIG. 9 is a diagram illustrating a difference in air blowing performance during heating operation when a resistor is not installed and when a resistor is installed. FIG. 10: is sectional drawing of the downstream of the circulation air path which shows Embodiment 2 of the bathroom dryer which concerns on this invention. FIG. 11: is sectional drawing which shows Embodiment 3 of the bathroom dryer which concerns on this invention.

  The bathroom dryer according to the embodiment has five operation modes of ventilation, drying, cool air, wind drying, and heating, and the operation mode can be switched by a remote controller. In the ventilation operation, the circulation fan is operated to exhaust the bathroom air to the outside.

  In the drying operation, the air blown from the bathroom by operating the circulation blower is divided into the circulation side and the ventilation side by the damper, and the air divided into the circulation side is heated by the heating unit to blow hot air into the bathroom. At the same time, the bathroom air diverted to the ventilation side is exhausted to the outside to dry the bathroom. At this time, the opening degree of the damper is adjusted so that the circulating air volume is larger than the ventilation air volume.

  In cool breeze operation, the air drawn from the bathroom by operating the circulation blower is divided into the circulation side and the ventilation side by the damper, and the air divided into the circulation side is blown into the bathroom, and the bathroom is divided into the ventilation side The exhaust air is exhausted outside to exhaust heat. In the cool breeze operation, the heating unit is not heated, and the circulating air is blown into the bathroom at room temperature. At this time, the opening degree of the damper is adjusted so that the circulating air volume is larger than the ventilation air volume.

  In the wind drying operation, the air sucked from the bathroom by operating the circulation blower was shunted to the circulation side and the ventilation side by the damper, and the air shunted to the circulation side was blown into the bathroom and was shunted to the ventilation side The bathroom air is exhausted outside to dry the bathroom. At this time, the opening degree of the damper is adjusted so that the ventilation air volume is larger than the circulating air volume. Unlike the drying operation, the wind drying operation dries the bathroom by blowing and ventilating without using warm air. Although it takes longer to dry than a normal drying operation, it saves energy.

  In the heating operation, the air blown from the bathroom by operating the circulation blower is caused to flow to the circulation side by the damper, heated by the heating unit, blown into the bathroom, and heated. The ventilation function stops during heating.

  In order to operate in the above five operation modes, it is necessary to form four air passages in the circulation air passage, and each air passage is formed according to the rotational (peristaltic) position of the rotary damper as the damper. did. The rotational position of the rotary damper and the air path formation in each operation mode will be described in detail in the description of the embodiment.

  Embodiments of a bathroom dryer according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
1 is a cross-sectional view showing Embodiment 1 of a bathroom dryer according to the present invention, and FIG. 2 is a cross-sectional view showing a downstream side of a circulation air passage when the rotational position of a damper is a ventilation position. 3 is a cross-sectional view showing the downstream side of the circulation air passage when the rotational position of the damper is in the dry and cool air position, and FIG. 4 is the circulation air passage when the rotational position of the damper is in the air drying position. 5 is a cross-sectional view showing the downstream side of the circulation air passage when the rotational position of the damper is the heating position, and FIG. 6 is a drive of the damper according to the first embodiment. FIG. 7 is a cross-sectional view showing the flow of air on the downstream side of the circulation air passage when no resistor is installed, and FIG. 8 shows the circulation when the resistor is installed. It is sectional drawing which shows the flow of the air of the downstream of an air path.

  As shown in FIG. 1, the bathroom dryer 91 according to the first embodiment includes a circulation air passage 2 a formed in the housing 16 </ b> A for ventilating, drying, and heating the bathroom, and for ventilating the bathroom. And a ventilation air passage 2 b formed in the exhaust duct connecting member 22. The exhaust duct connecting member 22 as a ventilation unit is connected to the ventilation connection port 9 of the circulation air passage 2a.

  The circulation air passage 2a is formed by a housing 16A and a circulation orifice (bottom plate) 17. The bathroom air circulation inlet 4 and the circulation outlet (blowout guide grille) 8 are provided downward, and the ventilation connection port is provided upstream on the downstream side. 9 is provided, the circulation blower 5 driven by the motor M1 is arranged on the inner upstream side, and the rotary damper 6 and the heating unit 7 are arranged on the inner downstream side. The circulation air passage 2a provided with the circulation fan 5, the rotary damper 6, and the heating unit 7 is referred to as a circulation unit 91A.

  The exhaust duct connecting member 22 as a ventilation unit is formed with a ventilation air passage 2b so that the exhaust direction is sideward (right direction in FIG. 1), and the exhaust port 21 is opened sideways. If an exhaust duct is connected to the exhaust port 21, the bathroom can be ventilated.

  A filter 20 that removes dust in the air is disposed on the upstream side of the circulation suction port 4. The lower side of the bathroom dryer 91 is covered with the design panel 14. On the upper side of the motor M1, a control unit 15 and a power supply connection unit (not shown) are arranged. A remote controller (not shown) is connected to the control unit 15 via a communication line, and the remote controller outputs an operation command to the control unit 15.

  The ventilation connection port 9 is provided on the top plate of the housing 16A, and air flows from the circulation air passage 2a through the ventilation connection port 9 to the ventilation air passage 2b. The circulation air passage 2a is formed by a housing 16A and a circulation orifice (bottom plate) 17, and is formed in a box shape in which the circulation suction port 4 and the ventilation connection port 9 are opened downward. The ventilation connection port 9 communicates with the ventilation air passage 2b when the rotary damper 6 is opened. The housing 16A is provided with a shaft through hole (not shown) for passing the rotation shaft of the drive motor M1. Further, the side plate of the housing 16 </ b> A is provided with an insertion port for inserting a holding member that holds the heating unit 7 and the rotary damper 6.

  The circulation blower 5 is a single suction sirocco fan blower, and is disposed on the upstream side of the circulation air passage 2 a so as to face the circulation suction port 4. The air blown out from the circulation blower 5 is diverted by the rotary damper 6 into the downstream side of the circulation air passage 2 a flowing from the heating unit 7 to the circulation outlet 8 and the ventilation air passage 2 b passing through the ventilation connection port 9. The motor M1 is installed on the upper side of the circulation air passage 2a.

  The heating unit 7 includes, for example, a plurality of heat generating elements arranged at intervals, or a plurality of heat dissipating fins provided on the heat generating element to form an air path around the heat generating element or the heat dissipating fins. The electric heater is configured to dissipate heat through the air, and the heating element in which the electric insulator and the heat conductor are disposed around the electric heater is housed in a metal pipe.

  The heating unit 7 is disposed on the most downstream side of the circulation air passage 2a. In order to suppress overheating of the heating unit 7, it is preferable to use a PTC (Positive Temperature Coefficient) heater. Since the PTC heater uses a PTC element whose resistance value suddenly rises at a predetermined temperature (Curie temperature) as a heating element, it has a self-temperature control function and is excellent in safety and temperature. Control is unnecessary and low cost.

  The circulation outlet (blowout guide grille) 8 has blades arranged in parallel, and can direct the blown air in a certain direction. In addition, a rotating shaft may be provided in a slat and you may adjust a wind direction by adjusting direction by an adjustment means.

  The rotary damper 6 is disposed on the lower side of the ventilation connection port 9 between the circulation fan 5 and the heating unit 7 in the circulation air passage 2a, and has a plate shape with a flat front end and a curved base end from the middle. Is formed. As shown in FIG. 6, the rotary damper 6 rotates around a damper rotation shaft 23 provided at the base end portion. A fan gear 24 is fixed to the damper rotating shaft 23 and the side portion of the rotary damper 6, and the rotary damper 6 can be rotated by rotating the fan gear 24.

  The rotary damper 6 is driven by a speed reducer that combines a fan gear 24 and a small gear 25. The small gear 25 is rotated by, for example, a driving means such as a stepping motor, and the rotary damper 6 is rotated and positioned via the fan-shaped gear 24 to constitute a part of the circulation air path 2a and / or the ventilation air path 2b. To do.

  The rotating damper 6 contacts the top plate of the housing 16A in the clockwise direction to the position where the ventilation connection port 9 is closed, and contacts the circulation orifice (bottom plate) 17 in the counterclockwise direction to contact the circulation air passage 2a. Is closed to the position where the upstream side of the circulation air passage 2a communicates with the ventilation connection port 9, and has a rotatable angle range (about 30 °).

  The rotational position of the rotary damper 6 is determined by rotating the rotary damper 6 clockwise or counterclockwise over the movable angle range and rotating it to the position shown in FIG. 5 or FIG. 2 where the rotation stops. Thereafter, as shown in FIG. 3 or FIG. 4, positioning control is performed to rotate the rotary damper 6 to a position where the upstream side of the circulating air passage 2 a communicates with both the downstream side of the circulating air passage 2 a and the ventilation connection port 9.

  The bathroom dryer 91 according to the first embodiment uses the rotary damper 6 as a one-side support by the damper rotation shaft 23 provided at the base end portion, and suppresses the height of the circulation air passage 2a by reducing the rotation angle. The bathroom dryer 91 can be made compact and lightweight. Moreover, it can position and hold | maintain in the intermediate position of a rotation angle range, and can adjust a circulating air volume and a ventilation air volume.

  The design panel 14 is attached to the housing 16A or the ceiling so as to cover the exposed portion of the housing 16A in the bathroom. The design panel 14 is formed in a flat shape, and is attached with a gap between the ceiling surface and the lower outer edge of the circulation unit 91 </ b> A and the outer peripheral upward side wall of the design panel 14. Inhale air from the bathroom. By forming the design panel 14 in a flat plate shape, the design panel surface can be easily cleaned.

  The control unit 15 includes a storage element in which a predetermined control program is stored, and individually controls the circulation fan 5, the heating unit 7, and the rotary damper 6 in accordance with an operation command input from the remote controller, thereby drying the bathroom. Let the machine 91 perform ventilation operation, drying operation, and the like.

  The resistance plate as the resistor 40 is formed in a rectangular plate shape, is installed on the circulation orifice (bottom plate) 17, and crosses the circulation air passage 2a. The resistor (resistor plate) 40 is like a weir provided on the downstream side of the circulation air passage 2a. The air flowing through the circulating air passage 2a is temporarily contracted by the resistance plate 40, wound downstream, and directed toward the heating unit 7, thereby improving the uniformity of the air passing through the heating unit 7. Further, as shown in FIG. 2, the resistor (resistor plate) 40 is covered with the rotary damper 6 when the rotary damper 6 is in the ventilation position and the downstream side of the circulation air passage 2a is closed. It does not affect the air flow toward the path 2b.

  Next, a ventilation operation, a drying operation, a cool air operation, a wind drying operation, and a heating operation of the bathroom dryer 91 according to the first embodiment will be described with reference to FIGS. As shown in FIG. 2, in the ventilation operation, the tip of the rotary damper 6 rotates counterclockwise to a position where it comes into contact with the circulation orifice (bottom plate) 17 and is positioned, and the heating unit 7 side (downstream) of the circulation air passage 2a. The circulation air passage 2a is connected to the ventilation air passage 2b through the ventilation connection port 9.

As a result, the air in the bathroom where the bathroom dryer 91 is installed flows through the ventilation inlet 2b through the circulation suction port 4, and is exhausted to the outside through the exhaust port 21, so that the bathroom is ventilated. At this time, the resistor 40 is covered with the rotary damper 6 and the air flows over the rotary damper 6. Therefore, the resistor (resistor plate) 40 does not affect the air flow in the ventilation air passage 2b .

  In the drying operation, as shown in FIG. 3, the tip of the rotary damper 6 does not contact the top plate of the housing 16A or the circulation orifice (bottom plate) 17, and the top plate of the housing 16A and the circulation orifice (bottom plate) 17 It is positioned at a position close to the top plate of the housing 16A from the intermediate position. Therefore, air can flow from the ventilation connection port 9 to both the ventilation air passage 2b and the air passage downstream of the circulation air passage 2a where the heating unit 7 is disposed. At the same time, the heating unit 7 is energized.

  In the drying operation, bathroom air blown out from the circulation fan 5 and flowed into the circulation air passage 2a is blown into the bathroom from the circulation outlet 8 through the heating unit 7, and a part thereof is a ventilation connection port 9. Then, the air flows into the ventilation air passage 2b and is exhausted from the exhaust port 21 to the outside. In the drying operation, ventilation can be performed while blowing hot air into the bathroom to dry the bathroom and clothes, and the bathroom dryer 91 can function as a hot air dryer.

  In the cool breeze operation, as shown in FIG. 3, the tip of the rotary damper 6 does not contact the top plate of the housing 16A or the circulation orifice (bottom plate) 17, and the top plate of the housing 16A and the circulation orifice (bottom plate) 17 It is positioned at a position close to the top plate of the housing 16A from the intermediate position. As a result, air can flow from the ventilation connection port 9 to both the ventilation air passage 2b and the downstream air circulation passage 2a where the heating unit 7 is disposed. At the same time, the circulating fan 5 is started to operate, and unlike the drying operation, the heating unit 7 is not energized.

  In the cool wind operation, the bathroom air blown out from the circulation blower 5 and flowed into the circulation wind path 2a is blown into the bathroom from the circulation outlet 8 and partly flows into the ventilation wind path 2b from the ventilation connection port 9. The air is exhausted from the exhaust port 21 to the outside. In cool breeze operation, ventilation is performed while blowing air into the bathroom, and the bathroom can be exhausted.

  In the air drying operation, as shown in FIG. 4, the tip of the rotary damper 6 does not contact the top plate of the housing 16A or the circulation orifice (bottom plate) 17, and the top plate and the circulation orifice (bottom plate) 17 of the housing 16A. Is positioned at a position close to the circulation orifice (bottom plate) 17 from the intermediate position. Therefore, air can flow from the ventilation connection port 9 into both the ventilation air passage 2b and the downstream air circulation passage 2a where the heating unit 7 is disposed. At the same time, the circulating fan 5 is started to operate, and unlike the drying operation, the heating unit 7 is not energized.

  In the wind drying operation, the bathroom air flowing into the circulation air passage 2a from the circulation blower 5 is blown into the bathroom from the circulation outlet 8 through the heating unit 7, and a part of the ventilation air is ventilated from the ventilation connection port 9. It flows into the path 2b and is exhausted from the exhaust port 21 to the outside. In the wind drying operation, unlike the drying operation, the heating unit 7 is not energized, and thus air is blown into the bathroom with the air temperature in the bathroom. While blowing room temperature air into the bathroom, ventilate and dry the bathroom and clothing. Although the drying speed of the wind drying operation is slower than that of the drying operation, the heating unit 7 is not energized.

  In the heating operation, as shown in FIG. 5, the rotary damper 6 is rotated to a position in contact with the top plate of the housing 16 </ b> A to close the ventilation connection port 9 and only downstream of the circulation air passage 2 a leading to the circulation outlet 8. Air can flow into the. At the same time, the circulation fan 5 is started to operate, and the heating unit 7 is energized.

  In the heating operation, the bathroom air blown from the circulation blower 5 and flows into the circulation air passage 2a is blown into the bathroom through the heating unit 7. The air passing through the heating unit 7 is heated and blown out into the bathroom as warm air so that the bathroom can be heated.

  Next, the flow of the intake air of the bathroom dryer 91 according to the first embodiment will be described. As shown in FIG. 1, the design panel 14 is disposed so as to cover the lower surface of the circulation unit 91A with a gap 30 between the ceiling and the lower outer edge of the circulation unit 91A. Then, the air is sucked into the circulation fan 5 and flows into the gap space 33 between the design panel 14 and the circulation orifice (bottom plate) 17 from the gap 30.

  The bathroom air that has flowed into the gap space 33 is sucked into the circulation blower 5 from the circulation suction port 4 and blown into the circulation air passage 2a. It flows into the downstream and / or the ventilation air passage 2b. The gap 30 is provided over the entire circumference of the design panel 14 and can suck in the air in the bathroom from the entire circumference. Therefore, the back surface of the design panel 14 and the bottom plate 17 can be dried by the flow of wind, and the occurrence of mold on the back surface of the design panel 14 and the bottom plate 17 can be prevented.

  Next, a description will be given of the induced flow during the drying operation, the cool wind operation, the wind drying operation, and the heating operation. The air blown out from the circulation blower 5 increases the speed when passing through the heating unit 7 and is blown into the bathroom through the blowout guide grille 8. The induced flow generated at this time is sucked from the gap 30 and flows into the gap space 33 between the design panel 14 and the circulation orifice (bottom plate) 17, and flows into the air passage of the blowout guide grill 8 from the induced flow opening 31. Then, it is blown into the bathroom together with the air that has passed through the heating unit 7.

  Since the wind flows around the blowout guide grille 8 due to the occurrence of the induced flow, the generation of mold around the blowout guide grille 8 on the back surface of the design panel 14 can be suppressed. In addition, since the amount of air blown into the bathroom increases due to the induced flow, the bathroom floor surface temperature distribution during heating operation is improved. In addition, the increase in air volume also improves drying unevenness in the bathroom during drying and wind drying operations. Moreover, since the design panel 14 has the gap | interval 30 over a perimeter between ceilings, the circulation of the air of a ceiling surface is good and the drying property of a ceiling surface is high.

Next, the flow of air in the vicinity of the resistor (resistor plate) 40 downstream of the circulation air path 2a will be described. As shown in FIG. 7, the air blown out from the circulating blower 5 is blown in the right direction as indicated by the arrow on the left side in the drawing. At this time, the air in the upper layer smoothly changes the wind direction along the rotary damper 6 and travels toward the heating unit 7. Since the lower layer air flows along the upper surface of the heating unit 7, the air flow in the heating unit 7 is not uniformized.

  As shown in FIG. 8, when the resistor (resistor plate) 40 is disposed on the bottom plate 17, the wind is once contracted by the resistor (resistor plate) 40, and the lower layer air is entrained and travels toward the heating unit 7. Compared with the flow downstream of the circulation air path 2a shown in FIG. 7, the air flow through the heating unit 7 is made uniform.

  FIG. 9 is a diagram showing a difference in air blowing performance during heating operation (when an AC motor is used as the motor M1) when the resistor is not installed and when the resistor is installed. As shown in FIG. 9, by installing the resistor (resistor plate) 40, the number of rotations is reduced with the same air volume, the noise is also reduced, and the air flow through the heating unit 7 is made uniform. I understand that.

Embodiment 2. FIG.
FIG. 10: is sectional drawing of the downstream of the circulation air path which shows Embodiment 2 of the bathroom dryer which concerns on this invention. As shown in FIG. 10, the bathroom dryer 92 according to the second embodiment has a stepped uneven portion 40 a as a resistor on the downstream side of the circulation orifice (bottom plate) instead of the resistance plate 40 according to the first embodiment. Forming. Even if it does in this way, the ventilation performance similar to the ventilation performance by the resistance board 40 shown in FIG. 9 is obtained.

Embodiment 3 FIG.
FIG. 11: is sectional drawing which shows Embodiment 3 of the bathroom dryer which concerns on this invention. As shown in FIG. 11, the bathroom dryer 93 according to the third embodiment divides and separates the circulation orifice (bottom plate) 17 of the bathroom dryer 91 according to the first embodiment shown in FIG. (The bottom plate) 17 and the heating unit case 41 that can be attached to and detached from the circulation unit 91 </ b> A are provided, and the resistance plate 40 is installed on the heating unit case 41.

  The heating part case 41 constitutes an air path on the downstream side of the circulation air path 2a, and the heating part 7 is disposed in this air path. By making the heating unit case 41 a separate part from the circulation orifice (bottom plate) 17, the bathroom dryer 93 is separately assembled and disassembled on the circulation fan 5 side and the rotary damper 6 side and the heating unit 7 side. As a result, the assembly and maintenance of the bathroom dryer 93 are improved.

  As described above, the bathroom dryer according to the present invention is useful as a household or commercial bathroom dryer that performs ventilation, drying, and heating of a bathroom.

2a Circulating air passage 2b Ventilation air passage 4 Circulating suction port 5 Circulating fan 6 Rotating damper 7 Heating part 8 Circulating air outlet (outlet guide grill)
9 Ventilation connection port 14 Design panel 15 Control unit 16A Housing 17 Circulating orifice (bottom plate)
20 Filter 21 Exhaust port 22 Exhaust duct connection member (ventilation unit)
23 Damper Rotating Shaft 24 Fan-shaped Gear 25 Small Gear 30 Gap 31 Induction Flow Opening 33 Gap Space 40 Resistance Plate (Resistor)
40a Stepped irregularities (resistors)
41 Heating unit case M1 motor 91, 92, 93 Bathroom dryer 91A Circulation unit

Claims (4)

Formed by a housing and a bottom plate, a circulation suction port and a blowout guide grill are provided downward, a ventilation connection port is provided upward, and a circulation fan, a damper for opening and closing the ventilation connection port, and a heating unit are arranged inside A circulation unit having a circulation air passage and installed on the ceiling of the bathroom;
A ventilation unit having a ventilation channel provided with an exhaust port and connected to a ventilation connection port of the circulation unit;
A bathroom dryer comprising:
Like a weir crossing the circulating air path, the air flowing through the circulating air path is once contracted on the upstream bottom plate of the heating section of the circulating air path and wound downstream. the provided Do resistor,
The resistor is covered with the damper when the damper opens the ventilation connection port and closes the downstream side of the circulation air passage .   The bathroom dryer according to claim 1, wherein the resistor is a resistor plate installed on the bottom plate and crossing the circulation air passage.   The bathroom dryer according to claim 1, wherein the resistor is a stepped uneven portion formed on the bottom plate.   2. The bathroom dryer according to claim 1, wherein the downstream side of the circulation air passage in which the heating unit is disposed is configured by a heating unit case that is separated from the bottom plate and is detachable from the circulation unit.

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