JP2010038425A - Bathroom ventilating and drying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathroom ventilating and drying device installable in the low ceiling of a bathroom and capable of facilitating duct piping work, with respect to a plurality of other rooms arranged in each direction. <P>SOLUTION: A circulation fan 2 and a ventilation fan 3 are juxtaposed inside a body 1 in the horizontal direction, and a bathroom side suction port 9 of an ventilation air course 10 is provided on the lower face of the body 1. Other room side suction ports 13 which communicates and connects with the other rooms by ducts are provided on three lateral faces 4A, 4C, 4D of the body 1, respectively, and the ventilation air course 10 communicated to the other room side suction port 13, at least on the lateral face 4A on the side where a heater storage part 5, arranged from the three other room-side suction ports 13 is formed to pass through a space above the heater storage part 5. By making it into such a structure, the body 1 can be installed in the low ceiling of the bathroom B and duct connection work to the plurality of other rooms arranged in each direction with respect to the bathroom B is facilitated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bathroom ventilation dryer provided with a main body embedded in a ceiling of a bathroom and provided with a ventilation fan for ventilating the bathroom and also ventilating other rooms other than the bathroom.

  Conventionally, as this type of bathroom ventilation dryer, a ventilation air passage and a circulation air passage for drying in the bathroom are formed in two layers in a box-shaped body, and a plurality of sides of the body are attached to the bathroom. There is one provided with an inlet port on the other chamber side that is connected to another chamber arranged in each direction by a duct (for example, see Patent Document 1).

Further, there is a fan in which a ventilation fan and a circulation fan are juxtaposed in a horizontal direction in a main body, and a plurality of other-chamber side intake ports are provided on a side surface of the main body (see, for example, Patent Document 2).
JP 2001-108273 A Japanese Patent Laid-Open No. 10-238839

  In such a conventional bathroom ventilation dryer, for example, in the one described in Patent Document 1, the height of the main body is increased due to the two-stage stack, and in the bathroom ventilation dryer installed in the ceiling of the bathroom, There is no high space behind the ceiling of the bathroom, so it may not be installed.

  Moreover, although the thing of patent document 2 becomes low in the height of a main body, since the fan for a circulation and the fan for ventilation are arranged in parallel in the main body, the ventilation air path can be formed in a main body. The location is limited, and the side of the main body on which the other-chamber side intake port can be provided is also limited.

  Therefore, depending on the layout of other rooms in the bathroom, duct piping work may be difficult or time-consuming, and workability during product installation is poor. There is a problem that the intake characteristics from the air will deteriorate, and the balance of the ventilation air volume in the bathroom and other rooms may deteriorate.

  The present invention solves such a conventional problem, can be installed on the low ceiling of the bathroom, and can easily perform duct piping work with a plurality of other rooms arranged in each direction. It aims at providing the bathroom ventilation dryer which can obtain the balance of ventilation air volume with other rooms appropriately.

  In order to achieve the above object, the bathroom ventilation dryer of the present invention has a circulation air passage that blows out air sucked from the bathroom by a circulation fan to the bathroom again through heating means, and the bathroom by the ventilation fan. And a bathroom ventilation dryer in which a ventilation air passage that sucks air in a room other than the bathroom and discharges it to the outside is formed in the box-shaped body, and the circulation fan and the ventilation fan are in the body. The heating means are arranged in a horizontal direction, and the heating means is disposed in a heating means storage portion that is formed in a concave shape on the lower surface side in the vicinity of one side surface of the main body and has an outlet of the circulation air passage. A bathroom side air inlet is provided on the lower surface of the main body, and another room side air inlet connected to the other room by a duct is provided on each of the three side surfaces of the main body. Installed on the side near the heating means storage Ventilating air passage communicating with the other chamber side inlet for is one that was formed through the upper space of the heating unit housing portion.

  In addition, the other means is provided with a ventilation air passage forming cover that covers the fan casing of the ventilation fan from the lower surface side of the main body and forms a ventilation air passage that communicates the air intake port of the other chamber and the fan suction port of the fan casing, A bathroom side air inlet is formed in the ventilation air path forming cover, and the bathroom side air inlet is located at a position where it does not overlap with the fan air inlet in plan view.

  Another means is that the bathroom side air inlet is provided in a horizontal direction at a position recessed by a predetermined dimension from the lower surface of the ventilation air passage forming cover.

  Another means is that the bathroom side air inlet is provided on a vertical surface formed vertically upward from the lower surface of the ventilation air passage forming cover.

  Another means is that the air volume adjusting means is provided at the bathroom side air inlet.

  Further, the other means is that the air volume adjusting means is configured to open and close a plurality of shutter plates in conjunction with each other to open and close the bathroom-side air intake and to adjust the air volume by adjusting the opening angle of the shutter plates. It is.

  The other means is provided with a plurality of guide ribs for rectifying and guiding the intake air flow from the other chamber to the fan suction port between the lower surface of the fan casing and the back surface of the ventilation air passage forming cover. .

  Another means is that a curved surface of a screw boss provided for screwing the ventilation air passage forming cover on the lower surface of the fan casing is formed as a part of the guide rib.

  In another means, the height of the plurality of guide ribs is set to a height suitable for each intake air flow of the ventilation air passages from the three directions communicating with the other-chamber intake ports provided in the three side plates. Is.

  Another means is that the plurality of guide ribs serve as partitions for the ventilation air passages from the three directions communicating with the other-chamber side intake ports provided in the three side plates.

  According to the present invention, the circulation fan and the ventilation fan are juxtaposed in the horizontal direction in the main body, and the heating means is disposed in the heating means storage portion formed in a concave shape on the lower surface side near one side surface of the main body. The ventilation air passage is provided with a bathroom side air inlet on the lower surface of the main body, and another room side air inlet connected to the other room by a duct is provided on each of the three side surfaces of the main body. Among them, the main body is installed in the lower ceiling of the bathroom by forming a ventilation air passage that communicates with the other room side air inlet provided at least on the side surface near the heating means storage section through the space above the heating means storage section. In addition, it is possible to provide a bathroom ventilation dryer having an effect of facilitating ducted connection with a plurality of other rooms arranged in each direction with respect to the bathroom and improving workability.

  Also, a ventilation air passage forming cover that covers the fan casing of the ventilation fan from the lower surface side of the main body and forms a ventilation air passage that communicates the intake port of the other room and the fan inlet of the fan casing is provided. The bathroom side air inlet is located in a place where it does not overlap with the fan air inlet in plan view, so that the air volume from the bathroom and the air volume from the other room are properly balanced. In addition, noise generated from the fan inlet can be reduced.

  In addition, since the bathroom-side air inlet is provided in a horizontal direction at a position that is a predetermined dimension away from the lower surface of the ventilation air passage forming cover, the amount of air intake from the bathroom is required to be larger than in other rooms. It is possible to achieve an appropriate balance with other rooms while ensuring the intake performance from the room.

  Moreover, the noise from the ventilation fan received in the bathroom can be reduced by providing the bathroom side air inlet on the vertical surface formed vertically upward from the lower surface of the ventilation air passage forming cover.

  Moreover, by providing the air volume adjusting means at the bathroom-side intake port, the balance between the intake air volume from the bathroom and the intake air volume from the other room can be freely adjusted.

  In addition, the air volume adjusting means opens and closes a plurality of shutter plates in conjunction with each other, opens and closes the bathroom-side air intake, and adjusts the air volume by adjusting the opening angle of the shutter plates. Even when the bathroom door is closed, ventilation is always possible, and the intake air volume from the bathroom can be adjusted in a small space.

  In addition, a plurality of guide ribs are provided between the lower surface of the fan casing and the back surface of the ventilation airflow path forming cover to rectify and guide the intake air flow from the other chambers to the fan intake port. Noise can be reduced.

  In addition, the curved surface of the screw boss provided to screw the ventilation air passage forming cover on the lower surface of the fan casing is formed as a part of the guide rib, so that the screw boss that originally contributed to noise generation is It can be used as part of the reduction to reduce noise.

  Further, the height of the plurality of guide ribs is set to a height suitable for each intake air flow of the ventilation air passages from the three directions communicating with the other room side air inlets provided in the three side plates, thereby sucking the fan. The intake air flow to the mouth is further rectified, and noise generated from the ventilation fan can be further reduced.

  In addition, a plurality of guide ribs serve as a partition between the ventilation air passages from the three directions communicating with the other room side air inlets provided on the three side plates, so that the ventilation resistance at the fan air inlet of the ventilation air passage from the other room Can be reduced to further reduce noise.

  In the bathroom ventilation dryer according to claim 1 of the present invention, the circulation fan and the ventilation fan are horizontally arranged in the main body, and the heating means is formed in a concave shape on the lower surface side in the vicinity of one side surface of the main body. And a ventilation air passage provided in the lower surface of the main body and connected to the other room by a duct and connected to the other room through a duct. Are provided on each of the three side surfaces of the main body, and a ventilation air passage communicating with at least one side surface of the three other-chamber-side intake ports in the vicinity of the heating-unit housing portion is connected to the heating-unit housing portion. The height of the main body is the height of one ventilation fan or circulation fan, and the other room side air intake is on each of the three side surfaces of the main body. Because it is provided, duct in the direction that the three side faces An effect that can be easily piping.

  Further, the bathroom ventilation dryer according to claim 2 covers the fan casing of the ventilation fan from the lower surface side of the main body, and forms ventilation air passages that connect the other room side air inlet and the fan air inlet of the fan casing. A path forming cover is provided, a bathroom side air inlet is formed in the ventilation air path forming cover, and the bathroom side air inlet is located in a place where it does not overlap in plan view with respect to the fan air inlet. And the fan inlet position are shifted so that they do not overlap with each other, noise can be reduced, and the ventilation resistance on the bathroom inlet side that directly inhales from the bathroom increases, so that the intake air volume from the bathroom is from the other room This contributes not to excessively increase the amount of air sucked through the duct.

  Further, the bathroom ventilation dryer according to claim 3 is provided with a bathroom side air inlet horizontally provided at a position recessed by a predetermined dimension from the lower surface of the ventilation air passage forming cover, and is mounted on the lower surface of the main body. A space as a ventilation air passage can be ensured between the air inlet and the bathroom side air inlet formed in the ventilation air passage forming cover.

  In the bathroom ventilation dryer according to claim 4, the bathroom side air inlet is provided on the vertical surface formed vertically upward from the lower surface of the ventilation air passage forming cover, and the noise generated from the ventilation fan is The light is transmitted from the bathroom side air inlet provided on the vertical surface to the bathroom in the horizontal direction.

  Moreover, the bathroom ventilation dryer according to claim 5 is provided with an air volume adjusting means at the bathroom side air inlet, and balances the intake air volume from the bathroom and the intake air volume from other rooms, and the intake air volume from the bathroom. It can be adjusted freely by adjusting with the air volume adjusting means.

  Further, in the bathroom ventilation dryer according to claim 6, the air volume adjusting means opens and closes the plurality of shutter plates in conjunction with each other to open and close the bathroom side air inlet, and adjusts the opening angle of the shutter plates to adjust the air volume. It is designed to be adjusted, and when the building is constantly ventilated through other rooms other than the bathroom, it can be cut off from the bathroom and necessary to open and close one shutter plate. It can be opened and closed and the intake air volume can be adjusted.

  The bathroom ventilation dryer according to claim 7 has a plurality of guide ribs for rectifying and guiding the intake air flow from the other chamber to the fan suction port between the lower surface of the fan casing and the back surface of the ventilation air passage forming cover. Ventilation resistance at the fan intake port of the ventilation air passage from the other room side air intake port is reduced, and the rotational speed of the ventilation fan can be reduced.

  Further, the bathroom ventilation dryer according to claim 8 is formed by forming a curved surface of a screw boss provided as a part of the guide rib on the lower surface of the fan casing to screw the ventilation air passage forming cover. The screw boss serving as a resistor can cause the curved surface to act as a part of the guide rib.

  Further, the bathroom ventilation dryer according to claim 9 is suitable for the intake air flow of each of the ventilation air passages from the three directions communicating with the other room side air inlets provided on the three side plates with the height of the plurality of guide ribs. It is formed at a height, and the guide ribs with the height corresponding to each intake flow sucked from the other room through the ventilation air passages in three directions rectify the intake flow and reduce the ventilation resistance, thereby improving the ventilation. The fan speed can be reduced.

  Further, the bathroom ventilation dryer according to claim 10 is configured such that the plurality of guide ribs serve as a partition between the ventilation air passages from three directions communicating with the other room side air inlet provided in the three side plates. In each of the intake air flows sucked from the other chambers through the ventilation air passages from each other, the flow is not disturbed by interfering with each other, and the air is smoothly sucked into the fan suction port.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

(Embodiment 1)
As shown in FIG. 1 to FIG. 4, a circulation fan 2 and a ventilation fan 3 are arranged in a horizontal direction in a box-shaped main body 1 that is inserted into the ceiling of the bathroom B and has an open bottom surface. A concave heater storage portion 5 having an opening on the lower side is formed in the vicinity of the side surface 4A in the main body 1, a heater 6 as a heating means is stored in the heater storage portion 5, and the upper surface of the heater storage portion 5 is for circulation. An air outlet 7 communicating with a discharge port (not shown) of the fan 2 is formed.

  The fan casing 3a of the ventilation fan 3 is covered with a ventilation air passage forming cover 8 from the lower surface side of the main body 1, and the ventilation air passage forming cover 8 is formed with a bathroom side air inlet 9 that opens toward the bathroom B. A ventilation air passage 10 is formed for communicating the bathroom side air inlet 9 and the fan air inlet 3b of the fan casing 3a to intake air from the bathroom side. As shown in FIG. 4, the bathroom-side air inlet 9 is located at a position that does not overlap with the fan air inlet 3 b in plan view, and further, the lower surface of the main body 1 with respect to the lower surface of the ventilation air passage forming cover 8. It is formed in the back position so that the ventilation air path 10 can be ensured between the decorative panel 11 attached to the side. In addition, an exhaust port 18 communicating with a discharge port (not shown) of the ventilation fan 3 is formed on the side surface 4B of the main body 1, and each of the three side surfaces 4A, 4C, and 4D has, for example, a bathroom other than the bathroom. Another room side air inlet 13 communicating with another room such as a toilet through a duct is formed. The ventilation air passage forming cover 8 forms a ventilation air passage 10 for taking in air from the other room side that communicates the three other room side air inlets 13 and the fan suction port 3b.

  Then, a space 12 is provided above the side surface 4D side of the heater storage portion 5 in the main body 1, and the other chamber side formed on the side surface 4A in the vicinity of the heater storage portion 5 among the three other chamber side intake ports 13 through this space 12. A ventilation air passage 10 communicating with the air inlet 13 is formed. By forming the ventilation air passage 10 in this way, the other-chamber side intake port 13 can be provided on each of the three side surfaces 4A, 4C, and 4D.

  In the body 1, the circulation fan 2 sucks the air in the bathroom B from the suction port 11 a of the decorative panel 11, and then circulates again through the heater 6 into the bathroom B from the discharge port 11 b of the decorative panel 11. An air passage (not shown) is formed.

  4 and 5, a plurality of shutter plates 15a are opened and closed in conjunction with a stepping motor (not shown) at the bathroom side air inlet 9 to set the rotation angle of the stepping motor. An air volume adjusting means 15 for adjusting the air volume sucked from the bathroom B is provided by setting the opening angle of the shutter plate 15a to a predetermined angle.

  Further, as shown in FIG. 3, a plurality of guide ribs 16 are provided on the lower surface of the fan casing 3a to rectify the intake flow from the other-chamber side intake port 13 and guide it to the fan intake port 3b.

  The other room side air inlets 13 are provided on the three side surfaces 4A, 4C, and 4D. For each of the intake air flows from the three other room side air inlets 13 through the ventilation air passage 10, The height of the plurality of guide ribs 16 is set to a height suitable for each intake flow from the air volume, the flow direction, and the like.

  The plurality of guide ribs 16 are partitions that are arranged so that the intake air flows from the three ventilation air passages 10 do not interfere with each other.

  As shown in FIG. 6, the ventilation air passage forming cover 8 is attached by screwing to a screw boss 17 provided on the lower surface of the fan casing 3 a, but the screw boss 17 is located near the guide rib 16. A curved surface formed by the outer surface of the screw boss 17 is provided as one of the guide ribs 16.

  The bathroom ventilation dryer having the above configuration is installed by installing the main body 1 in the back of the ceiling of the bathroom B as an installation work, and the other room other than the bathroom B and the other room side air inlet 13 of the main body 1 are connected by a duct. Plumbing work is performed.

  In this installation work, the main body 1 is configured such that the circulation fan 2 and the ventilation fan 3 are arranged in the horizontal direction in the main body 1, so that the height of the main body 1 is the circulation fan 2 or the ventilation fan 3. It can be embedded in a low ceiling, and includes three side surfaces 4A, 4C, 4D including the side surface 4A on the side where the heater housing 5 of the main body 1 is provided. Since the other room side air inlet 13 is formed, piping is selected by selecting the other room side air inlet 13 in the direction facing the other room that needs ventilation according to the layout of the room in the house. The piping can be easily performed and the duct is not bent at a large angle, so that the intake performance from the other chamber is not lowered.

  After the installation of the bathroom ventilation dryer, the balance between the intake air volume from bathroom B and the intake air volume from other rooms will be appropriate from the required ventilation air volume of bathroom B and the total required ventilation air volume of other rooms. Further, the opening angle of the shutter plate 15a is set by operating the rotation angle of the stepping motor of the air volume adjusting means 15 to be a predetermined angle corresponding to the opening angle of the shutter plate 15a.

  Since the air volume adjusting means 15 is opened and closed to the position where the opening angle is set, and closed and closed during normal ventilation, which will be described later, by opening and closing by a plurality of shutter plates 15a, this opening and closing operation is a small space. It is not necessary to increase the height of the main body 1 or increase the thickness of the decorative panel 11 for the opening / closing operation.

  When the bathroom ventilation dryer installed and adjusted as described above is operated, a circulation flow for blowing warm air into the bathroom B is formed by the circulation fan 2 and the air in the bathroom B is ventilated by the ventilation fan 3. The air from the bathroom side air inlet 9 of the air passage forming cover 8 and the air in the other room are sucked from the air inlets 13 on the other side of the side surfaces 4A, 4C and 4D of the main body 1 and discharged to the outside. During the ventilation operation, the bathroom side air inlet 9 and the fan air inlet 3b of the fan casing 3a are positioned so as not to overlap in plan view, so that the bathroom side air inlet 9 and the fan air inlet 3b face each other. Compared to the above, the noise transmitted from the fan inlet 3b to the bathroom B can be reduced, the ventilation resistance is slightly increased, and the intake air volume directly sucked from the bathroom B is sucked from the other room through the duct. It can be set as one structure which contributes so that it may not increase too much with respect to the intake air volume to perform.

  Further, the bathroom side air inlet 9 is formed at a position deeper from the lower surface of the ventilation air passage forming cover 8, and the ventilation air passage 10 is secured between the decorative panel 11 and the ventilation air flow is larger than that of the other rooms. Can be ensured without increasing the body 1 or making the decorative panel 11 thick.

  On the other hand, the intake air flow from the other chamber flows in a direction along the lower surface of the fan casing 3a and is sucked into the fan suction port 3b, but the flow is rectified by the guide rib 16 provided on the lower surface of the fan casing 3a. Since the guide rib 16 has a height suitable for the airflow, the rectification becomes more effective. Further, the guide rib 16 has a partition between the intake airflow of each ventilation airflow path 10 and the airflow. Therefore, the intake air flows do not interfere with each other. For this reason, ventilation from the other-room intake port 13 connected to the other chamber via the duct to the fan suction port 3b is performed. The ventilation resistance in the air passage 10 is reduced, the intake characteristics from other rooms are improved, and an appropriate balance of the ventilation air volume with the bathroom B is easily obtained. As a result, the number of rotations of the ventilation fan 3 can be reduced to reduce noise. Further, the screw boss 17 for screwing the ventilation air path forming cover 8 is inherently a ventilation resistance, but its curved surface also contributes as one factor for reducing noise.

  Then, in the bathroom B, when the bath is ventilated, the bather feels uncomfortable with the ventilation flow. Therefore, when the bathroom ventilation dryer is operated as a regular ventilation of the house during the bath, the air volume adjusting means 15 is closed and the bathroom B is closed. Stop inhaling the air and ventilate constantly through other rooms. In addition, even when not always ventilating, the operation of stopping the intake from the bathroom by the air volume adjusting means 15 during bathing is naturally possible.

  In the first embodiment, the configuration in which the guide rib 16 is provided on the lower surface of the fan casing 3a has been described. However, the same configuration is possible even if the guide rib 16 is provided on the back surface of the ventilation air passage forming cover 8 facing the lower surface of the fan casing 3a. Has an effect.

(Embodiment 2)
As shown in FIG. 7, the bathroom ventilation dryer according to the second embodiment of the present invention has a bathroom side air inlet 9 </ b> A from the lower surface of the ventilation air passage forming cover 8 </ b> A with respect to the bathroom ventilation dryer according to the first embodiment. It is characterized in that it is provided on a vertical surface 8a formed vertically upward.

  With the above configuration, the noise generated from the fan inlet 3b and propagated to the bathroom side inlet 9A propagates in the horizontal direction because the bathroom side inlet 9A is provided on the vertical surface 8a. The noise received in the bathroom B will be reduced.

  The bathroom ventilation dryer according to the present invention facilitates duct piping from a single device to a plurality of rooms, and can appropriately obtain a balance of ventilation airflow between the room in which the main body is installed and the other rooms. Can be applied to a ventilation system that ventilates a house with a single device.

The front view block diagram which shows the bathroom ventilation dryer of Embodiment 1 of this invention Side view of the bathroom ventilation dryer Perspective view from below when removing ventilation air passage formation cover of the bathroom ventilation dryer Cross section of the bathroom ventilation dryer Perspective view from below of ventilation air passage forming cover of the bathroom ventilation dryer Perspective view of the direction of the fan inlet of the ventilation fan of the bathroom ventilation dryer The principal part perspective view of the ventilation air path formation cover of the bathroom ventilation dryer of Embodiment 2 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Circulation fan 3 Ventilation fan 3a Fan casing 3b Fan inlet 4A Side surface 4C Side surface 4D Side surface 5 Heater storage part 6 Heater 7 Outlet 8 Ventilation air channel formation cover 8A Ventilation air channel formation cover 8a Vertical surface 9 Bathroom side Air inlet 9A Bathroom side air inlet 10 Ventilation air passage 12 Space 13 Other room side air inlet 15 Air volume adjusting means 15a Shutter plate 16 Guide rib 17 Screw boss

Claims (10)

A circulation air passage that blows air sucked from the bathroom by the circulation fan to the bathroom again through the heating means, and ventilation air that sucks air from the bathroom and other rooms other than the bathroom by the ventilation fan and discharges it to the outside. A bathroom ventilation dryer in which a path is formed in a box-shaped main body, wherein the circulation fan and the ventilation fan are juxtaposed in the horizontal direction in the main body, and the heating means is provided on one side of the main body. It is disposed in a heating means storage section that is formed in a concave shape on the lower surface side in the vicinity and has an outlet for the circulation air passage. The ventilation air passage is provided with a bathroom-side air inlet on the lower surface of the main body, and the other room and duct. The other chamber side air inlets that are connected in communication with each other are provided on each of the three side surfaces of the main body, and communicated with at least one of the three other chamber side air inlet ports on the side surface in the vicinity of the heating means storage portion. Ventilating air passages that perform the heating means Bathroom ventilating dryer characterized in that it is formed through the space above the paid portion. A ventilation air passage forming cover that covers the fan casing of the ventilation fan from the lower surface side of the main body and forms a ventilation air passage that communicates the air inlet of the other room and the fan inlet of the fan casing is provided. 2. The bathroom ventilation dryer according to claim 1, wherein a bathroom side air inlet is formed, and the bathroom side air inlet is located at a position that does not overlap with the fan air inlet in a plan view. The bathroom ventilation dryer according to claim 2, wherein the bathroom side air inlet is provided in a horizontal direction at a position recessed by a predetermined dimension from the lower surface of the ventilation air passage forming cover. The bathroom ventilation dryer according to claim 2, wherein the bathroom side air inlet is provided on a vertical surface formed vertically upward from the lower surface of the ventilation air passage forming cover. The bathroom ventilation dryer according to any one of claims 2 to 4, wherein an air volume adjusting means is provided at the bathroom side air inlet. 6. The bathroom ventilation according to claim 5, wherein the air volume adjusting means is configured to open and close a plurality of shutter plates in conjunction with each other to open and close a bathroom side air inlet, and to adjust an air volume by adjusting an opening angle of the shutter plates. Dryer. The bathroom ventilation dryer according to claim 2, wherein a plurality of guide ribs are provided between the lower surface of the fan casing and the rear surface of the ventilation air passage forming cover to rectify and guide the intake air flow from the other chamber to the fan suction port. . The bathroom ventilation dryer according to claim 7, wherein a curved surface of a screw boss provided for screwing the ventilation air passage forming cover on the lower surface of the fan casing is formed as a part of the guide rib. 9. The height of the plurality of guide ribs is set to a height suitable for each intake air flow of the ventilation air passages from the three directions communicating with the other-chamber intake ports provided in the three side plates. Bathroom ventilation dryer. The bathroom ventilation dryer according to claim 7 or 8, wherein the plurality of guide ribs serve as partitions for ventilation air passages from three directions communicating with the other-room intake ports provided in the three side plates.

Images