JP4019834B2 - Bathroom ventilator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bathroom ventilator disposed on a ceiling or the like of a bathroom, and more particularly to a bathroom ventilator capable of ventilating a room outside a bathroom.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, bathroom ventilators arranged on bathroom ceilings are known. As an example of the structure of this bathroom ventilator, a metal frame for attachment is fixed to an attachment hole opened in the bathroom ceiling, and the main body case of the bathroom ventilator is held by this metal frame. The main body case usually has a box shape, and the inside of the bathroom is opened to be an opening for sucking air in the bathroom, and a fan for sucking air is arranged inside the main body case. The fan for air suction is composed of a centrifugal blower, and the rotation shaft is directed in a substantially vertical direction.
[0003]
Moreover, the outer peripheral part of the air blower is covered with the wall of the air blower chamber, and a part of the air blower chamber is connected to an exhaust air passage through which air passes. The exhaust air passage is connected to an exhaust port opened in the side wall portion of the main body case. A part of the exhaust air passage is branched into the bathroom in the middle, and the branched air passage serves as a circulation air passage for warming the sucked air and circulating it in the bathroom. A heating device such as a heater is provided in the circulation air passage so that air to be circulated in the bathroom can be heated.
[0004]
Furthermore, a damper is provided near the branch portion of the circulation air passage so that the air volume of the air exhausted from the exhaust air passage to the outside of the bathroom and the air circulated in the bathroom can be adjusted. It has become.
[0005]
[Problems to be solved by the invention]
However, even in the case of such a bathroom ventilator, since ventilation of rooms other than the bathroom cannot be performed, the ventilation of the entire building is insufficient. Therefore, it is conceivable to provide an air inlet in the main body case, but if the rotation shaft of the blower extends in the vertical axis direction, it is suitable for sucking air inside the bathroom, but the side wall portion of the main body case If the air inlet is newly opened, there is a problem that the efficiency is low when air is sucked from the air inlet.
[0006]
Also, since the circulation air passage extending into the bathroom is oriented in the vertical direction, the damper that switches the exhaust from the blower to the circulation air passage and the exhaust air passage usually swings in the vertical direction. is there.
[0007]
However, when the blower rotates about the vertical axis, the exhaust from the blower has a fast flow on the near side along the right or left side wall of the exhaust air passage, and the air flow on the central side of the exhaust air passage becomes slow. As a result, unevenness occurs in the switching air volume by the damper, and there is a problem that heating efficiency is not improved.
[0008]
The present invention pays attention to such a problem, and an object thereof is to improve heating efficiency while improving air suction efficiency while enabling ventilation of buildings other than bathrooms.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the invention of claim 1 is directed to a main body case installed in a mounting opening provided in a bathroom wall, and a suction opening for introducing air in the bathroom and the introduced air. A discharge opening for returning the air again into the bathroom, and an exhaust port for exhausting the air sucked from the bathroom to the outside of the bathroom is formed in the wall of the main body case, and the air in the bathroom is formed in the main body case. blower case for storing the air blower for sucking is formed, and on the blower case, the air introduced from the bathroom exhaust air path for exhausting to the outside of the bathroom is provided from said exhaust port, said blower case or exhaust air duct At least one of the circulation air passages for returning the air in the bathroom sucked by the blower from the discharge opening portion into the bathroom is provided, and the exhaust air passage and the circulation air passage are connected to the exhaust port and the circulation air. Airway The control by the angle of the blast volume damper, the blower is a bathroom ventilating device that is constituted by a centrifugal fan having an array of blades extending parallel to the axis of rotation of the air blowing device in a cylindrical,
While the rotation axis of the blower is directed parallel to the swing axis of the damper,
In the side plate portion of the blower case, an opening for sucking air by the blower is formed,
On the side wall of the main body case facing the side plate portion, a sub-inlet for introducing air inside the building other than inside the bathroom into the main body case is formed,
A motor of the blower is disposed between the side plate portion and the auxiliary inlet .
[0010]
According to such a structure, since the sub introduction port is provided, ventilation of buildings other than a bathroom is enabled.
[0011]
In addition, even if the flow velocity of the air exhausted from the blower is faster near the side wall of the exhaust air passage, and the side far from the side wall is slower, the rotation axis of the blower must be parallel to the swing axis of the damper Thus, the free end portion of the damper can scoop up an air layer having the same flow velocity almost uniformly and guide it to the circulation air passage.
[0012]
Therefore, even when a part of the exhaust air from the blower is circulated in the bathroom, it is easy to adjust the air volume of the air sent to the circulation air passage according to the angle of the free end of the damper. Heating efficiency can be improved while increasing.
[0013]
In addition, in this bathroom ventilation apparatus, when the sub-introduction port is opened in the vicinity of the portion where the motor that drives the blower is opened, the heating effect can be increased by the heat of the motor while cooling the motor. .
[0014]
Furthermore, in the bathroom ventilator described above, the dark central part (including the central part) of the outer peripheral part of the blower is provided with a partition part that divides the blower into left and right parts, and air is sucked from the left and right parts of the partition part. When air can be blown from the outer peripheral portion, air can be sucked from the left and right sides of the blower. In a cylindrical centrifugal blower, if the cylinder is deep, it is difficult for air to enter the inner part of the cylinder, so the exhaust capacity is also lower than the central part, but since the partition part is provided in the central part of the blower, Ability improves.
[0015]
Furthermore, in the above-described bathroom ventilation device, when the air blower chamber is formed away from the upper bottom wall portion of the main body case, and an air air passage is formed between the air blower chamber and the upper bottom wall portion, this air passage is formed. Thus, air can be sucked from both sides of the blower.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a bathroom ventilation apparatus according to an embodiment of the present invention will be described with reference to the drawings.
[0017]
This bathroom ventilator 1 has a main body case 2 for blowing air introduced into the bathroom after the introduction of the air in the bathroom, the mounting bracket 3, the metal cover 4 and the duct joints 5 to 7 shown in FIG. 1 and FIG. 2).
[0018]
As shown in FIG. 1, the main body case 2 is formed with a blower case 9 that houses the blower 8 and an exhaust air passage 10 that can exhaust the air from the blower 8 to the outside. 10 are connected. An exhaust port 11 is formed in the main body case 2, and this exhaust port 11 serves as a terminal portion of the exhaust air passage 10, and exhaust exhausted from the blower case 9 is exhausted outside the room. The upper part of the main body case 2 is covered with a metal cover 4 shown in FIG.
[0019]
In the exhaust air passage 10, a circulation air passage 12 (see FIG. 7) for introducing the air from the exhaust air passage 10 into the bathroom is formed. As shown in FIG. 7, the circulation air passage 12 is provided with a heater 13 </ b> A (heat generating device) for warming and circulating the air sent into the exhaust air passage 10 into the bathroom. The end of the circulation air passage 12 opens to the inside of the bathroom.
[0020]
In the vicinity of the exhaust port 11 of the exhaust air passage 10, a damper 14 is provided that can swing so as to switch the direction of the air passing through the exhaust port 11 and the circulation air passage 12. Sub-introduction ports 15 and 16 for introducing air inside the building other than inside the bathroom into the inside of the main body case 2 are formed in the side wall portion of the main body case 2. The blower 8 is constituted by a centrifugal blower provided with a wing on the outer peripheral portion having a cylindrical shape, and the rotating shaft 17 of the blower 8 is directed parallel to the swing shaft 18 of the damper 14.
[0021]
The main body case 2 is made of plastics such as ABS resin as an example, and is attached to the inside of an opening 21 for a ventilation fan formed in the ceiling portion 20 of the bathroom 19 shown in FIG. At that time, the main body case 2 is installed such that the blower case 9 and the exhaust air passage 10 are located above the ceiling portion 20.
[0022]
As shown in FIG. 2, the frame portion 22 of the mounting bracket 3 is first inserted into the opening portion 21 of the ceiling portion 20. The flange 23 of the mounting bracket 3 is fixed to the edge of the opening 21 with a wood screw or the like. The body case 2 covered with the metal cover 4 is screwed to the frame portion 22 of the mounting bracket 3.
[0023]
When the bathroom ventilation device 1 is attached to the ceiling portion 20 of the bathroom 19, first, the L-shaped bracket 3 </ b> C of the mounting bracket 3 is fixed to a beam or the like of the building above the ceiling portion 20 with a bolt. At this time, the horizontal and vertical positions of the attachment fitting 3 and the opening 21 are adjusted, the duct joints 5 to 7 are attached to the attachment fitting 3, and the ducts are connected to the duct joints 5 to 7. Next, the bathroom ventilator 1 having the metal cover 4 is inserted into the mounting bracket 3 and fixed with screws.
[0024]
As shown in FIG. 1, the metal cover 4 is formed with an opening 4 </ b> A that communicates with the exhaust port 11 and openings 4 </ b> B and 4 </ b> C that communicate with the sub-introduction ports 15 and 16. The metal cover 4 has a box shape and is screwed to the main body case 2. When the main body case 2 is inserted into the opening 21, the duct joint 5 is positioned facing the opening 4A, the duct joint 6 is positioned facing the opening 4B, and the duct joint 7 is positioned facing the opening 4C.
[0025]
Then, as shown in FIG. 3, the duct 24 connected to the exhaust hood 24 </ b> A of the building routed above the ceiling portion 20 and the exhaust duct joint 5 are connected to each other, and the duct joint 5 and the exhaust Adhesive tape is affixed around the site where the duct 24 is connected.
[0026]
Further, the duct joint 6 is connected to the duct 28 connected to the ventilation port 26 in the room other than the bathroom 19 (for example, the dressing room 25) in the same manner as the duct joint 5. After the duct joints 5 and 6 are connected to the ducts 24 and 28, the bathroom ventilator 1 is fixed to the interior of the mounting bracket 3, the exhaust air passage 10 and the duct 24 are connected, and the duct 28 is connected to the auxiliary inlet 15. Is done. The duct joint 7 is connected to a duct 29 extending from the ventilation port 27 of the toilet 84. Reference numeral Ba denotes a bathtub, 81 denotes an inspection port, 82 denotes a bathroom door, and 83 denotes a louver that is an air intake port into the bathroom 19.
[0027]
The main body case 2 is attached to the mounting bracket 3 by being screwed through the ceiling portion 20 and supported by the beam of the building and the ceiling portion 20.
[0028]
For convenience, FIG. 4 shows the main body case 2 of FIG. 1 facing away from the time of attachment, and the suction / discharge opening 32 of the main body case 2 facing the ceiling 20 of the bathroom. A flange 33 is formed around the suction / discharge opening 32 of the main body case 2, and a vertical wall having a rectangular planar shape is formed at the back of the suction / discharge opening 32 for introducing air in the bathroom. A portion 34 is formed.
[0029]
The vertical wall portion 34 is formed at substantially the same height as the frame portion 3B of the mounting bracket 3 so that the exhaust port 11 is positioned on the frame portion 3B of the mounting bracket 3. The flange portion 33 is configured to seal the opening portion 21 of the ceiling portion 5. As shown in the two-dot chain line of FIG. 4 and FIG. 3, the flange 33 is screwed with a front panel 35 for sucking air or blowing it out.
[0030]
The front panel 35 has a plurality of elongated holes for sucking air in the bathroom and a plurality of elongated holes for blowing air from the body case 2 into the bathroom. A filter (not shown) made of a nonwoven fabric or the like is attached between the air suction opening of the front panel 35 and the main body case 2. The air blowing opening of the front panel 12 is disposed so as to face the heater frame 13.
[0031]
A box-shaped air introduction chamber 36 is formed at the back of the vertical wall portion 34 of the main body case 2. The bottom wall portion 36A of the air introduction chamber 36 is closed, and the sub introduction ports 15 and 16 are formed in the side walls 36B and 36C of the air introduction chamber 36. A portion of the air introduction chamber 36 on the exhaust air passage 10 side is a vertical wall portion 36D that rises from the bottom wall portion 36A, and the exhaust air passage 10 is formed on the vertical wall portion 36D. With the configuration in which the vertical wall portion 36D rises from the bottom wall portion 36A, an air passage 41 through which air passes is formed between the lower container 40 of the blower case 9 and the bottom wall portion 36A described later.
[0032]
In the air introduction chamber 36, the blower case 9, the fan motor 70, and the support fitting 76 (see FIG. 8) for supporting the fan motor 70 are disposed. Between the side wall portion of the blower case 9 and the wall portions 36B and 36C provided with the sub introduction ports 15 and 16, a space portion S through which air from the suction / discharge opening 32 can be sufficiently passed is provided. . By providing the space portion S between the side wall portion of the blower case 9 and the sub-introduction ports 15 and 16, the space portion S and the inside of the blower case 9 are attracted by the suction force when the blower 8 rotates. Then, the air inside the bathroom 19 is sucked and blown to the exhaust air passage 10. In addition, the air in the toilet 84 and the dressing room 25 can be sucked from the duct joints 6 and 7 and the auxiliary introduction ports 15 and 16.
[0033]
The side wall portions 42 and 43 on both sides of the exhaust air passage 10 are narrower than the air introduction chamber 36, and the side wall portions 42 and 43 have the same height. The heater frame 13 is attached to the upper portions of the side wall portions 42 and 43 with screws. The exhaust air passage 10 is formed with a recess 10A for holding the tip of the damper 14, and when the tip of the damper 14 is positioned in the recess 10A, the damper 14 is exhausted by the exhaust air from the upstream of the recess 10A. In addition, the negative pressure in the recess 10A is reduced, and the resistance due to the negative pressure when the front end of the damper 14 blocking the exhaust air passage 10 is lifted is reduced.
[0034]
The heater frame 13 has a cylindrical shape in order to form a circulation air passage, and a heater 13A is disposed inside the cylindrical frame outer heater frame 13. The heater 13A includes a switch circuit connected to the control line 30A, is connected to the power supply line 31A, and can supply power from the power supply line 31A by conduction / cutoff by a control board described later.
[0035]
A bearing recess (not shown) for holding the swing shaft 18 of the damper 14 is provided at the edge of the side wall portions 42 and 43 in the vicinity of the exhaust port 11 and is inserted into the bearing recess. When the heater frame 13 is fixed to the side wall portions 42 and 43, the swing shaft 18 is held so that the swing shaft 18 does not fall off. As shown in FIG. 5, the end portion 43 </ b> A on the side wall portion 43 side of the swing shaft 18 is formed in a “D” -shaped cross section.
[0036]
A side wall portion of the exhaust air passage 10 exists between the storage portion 45 and the exhaust air passage 10, and the storage portion 45 is separated from the exhaust air passage 10. An end portion 43 </ b> A of the swing shaft 18 protrudes inside the storage portion 45, and the driven cam 44 is disposed inside a box-shaped storage portion 45 formed in the side wall portion 43. An end portion 43 </ b> A of the D-shaped cross section of the swing shaft 18 is fitted in a D-type holding hole 44 </ b> A at the base portion of the driven cam 44.
[0037]
A driven cam 44, a disk body 47, and an AC synchronous motor 46 are disposed in the storage portion 45 in order in a direction away from the exhaust air passage 10. That is, an AC synchronous motor 46 is attached to a side wall portion of the storage portion 45 far from the exhaust air passage 10, and an output shaft of the AC synchronous motor 46 protrudes toward the exhaust air passage 10. The AC synchronous motor 46 includes a reduction gear (not shown), and a disc body 47 is attached to a rotation shaft 46A of the reduction gear while being prevented from rotating. The disc body 47 is provided in the vicinity of the driven cam 44, and a driving cam 48 is rotatably supported on the surface of the disc body 47 facing the driven cam 44. The driving cam 48 is slidably held in a cam hole 49 opened in the driven cam 44.
[0038]
The AC synchronous motor 46 is connected to wiring extending from a control board, which will be described later, and the power supply circuit of the control board supplies the AC of the power supply line 31A to the AC synchronous motor 46. The AC synchronous motor 46 is supplied with power from the control board based on a control signal from the controller 30 to change the angle of the damper 14.
[0039]
FIG. 6 shows the configuration of the blower case 9. The blower case 9 includes a lower case 50 and an upper case 51. The lower case 50 has a box shape that opens upward and laterally, and the outer peripheral portion 52 is curved in a substantially circular shape. Side plate portions 53 rise on the left and right sides of the outer peripheral portion 52. The width of the left and right side plate portions 53 is set to be the same as the left and right width of the exhaust air passage 10. A semicircular opening 54 for introducing air into the blower 8 is formed at the upper end portion of the side plate portion 53. The diameter of the semicircular opening 54 is set to be slightly smaller than the diameter of the air inlet of the cylindrical centrifugal blower 8. As shown in FIG. 7, the bottom portion of the outer peripheral portion 52 is supported by a boss 55 that protrudes near the center of the bottom wall portion 36 </ b> A of the air introduction chamber 34, and a screw that penetrates the bottom portion of the outer peripheral portion 52 is provided. It is fixed by being screwed into the boss hole of the boss 55. The rear portion of the outer peripheral portion 52 of the lower case 50 is fitted and held in a curved portion 56 formed on the rear wall portion of the air introduction chamber 36. Between the lower case 50 and the bottom wall portion 36A of the air introduction chamber 36, as shown in FIG.
[0040]
The upper case 51 has a semi-cylindrical shape that matches the upper edge of the lower case 50. The outer peripheral portion 57 of the upper case 51 is formed in a substantially cylindrical shape. The rear end portion of the outer peripheral portion 57 is in close contact with the rear end portion of the lower case 51. As shown in FIG. 7, the front end portion of the upper case 51 is curved so as to have substantially the same height after being slightly lower than the height of the side wall portions 42 and 43. The edge of the curved portion 58 is fixed in contact with the lower portion of the heater frame 13. The left and right side plate portions 59 of the upper case 51 are in close contact with and in contact with the side plate portion 53 of the lower case 50. Semicircular openings 60 are formed in the lower edge portions of the left and right side plate portions 59, respectively. Mounting flanges 61 protrude from rear end portions of the left and right side plate portions 59, respectively. The flange 61 is supported by a flat portion 62 formed at the rear portion of the air introduction chamber 36 and screwed.
[0041]
As described above, the centrifugal blower 8 is disposed inside the blower case 9. FIG. 8 shows the configuration of the blower 8 and the mounting state of the fan motor 70. The blower 8 has a large number of wings 72 formed on the outer periphery of a cylindrical shape. A circular ring 73 is provided at both ends of the blower 8, and the circular ring 73 supports the wings 72. A partition wall 74 is formed in the central portion of the blower 8 in the axial direction, and the blower 8 is provided with two blower portions. A rotation shaft 17 attached to the output shaft of the fan motor 70 is fixed to the rotation center portion of the partition wall portion 74. The blower 8 is provided with two fans on the left and right sides by forming a partition wall 74 at the center and partitioning both sides, introducing air from both sides of the blower 8, The air introduced from the gap 72A of the wing 72 can be exhausted. A circular opening 75 inside the circular ring 73 is an inlet for sucking air into the blower. The diameter of the circular opening 75 is larger than the diameter of the opening 60 of the blower case 9.
[0042]
The fan motor 70 is supported by a support fitting 76 attached to the side portion of the bottom wall portion 36 </ b> A of the air introduction chamber 36. The support fitting 76 is composed of a lower fitting 77 that is fixed to the bottom wall portion 36 </ b> A and holds the case lower portion of the fan motor 70, and an upper fitting 78 that holds the case upper portion of the fan motor 70. Is fixed by screwing. The fan motor 70 is disposed in the vicinity of the sub-introduction port 15 so that it is cooled by the introduced air and warms the introduced air.
[0043]
The fan motor 70 is supplied with power from a control board disposed at the rear of the case body 2 and is rotated by a control signal from the controller 30. A recess 80 for storing a control board (not shown) is formed in the rear part of the case body 2, and the control board is stored in the recess 80. The concave portion 80 is covered with a box-shaped cover, and a control line and a power supply line extend from between the concave portion and the cover to the AC synchronous motor 46, the fan motor 70, and the heater 13A.
[0044]
The control board includes a power supply circuit for supplying commercial power to the fan motor 70 and the AC synchronous motor 46 in order to control the fan motor 7q and the AC synchronous motor 46. The power supply circuit drives the fan motor 70 and the AC synchronous motor 46 by the control signal of the controller 30.
[0045]
The controller 30 includes an on / off button of the bathroom ventilation apparatus 1, a selection button for ventilation / blowing / heating mode of the bathroom, a timer setting button, and other buttons.
[0046]
In the case of only ventilation in the bathroom, the AC synchro is controlled so that the fan motor 70 is rotated so that air can be blown by the control of the controller 30 and the damper 14 is directed horizontally to block air blowing to the heater frame 13. The eggplant motor 46 is rotated.
[0047]
When ventilating the bathroom and blowing air into the bathroom, the damper 14 is inclined at a set angle based on the setting of the air flow rate to the bathroom (if there is an air flow setting function), and the exhaust from the exhaust port 11 Blowing into the bathroom.
[0048]
When all the air sucked from the bathroom is circulated into the bathroom, the damper 14 is inclined at the maximum inclination angle to block the exhaust air passage 10 and blown into the bathroom. Next, the fan motor 70 is rotated to ventilate the bathroom 19, the dressing room 25, and the toilet.
[0049]
When the heating mode is selected, the damper 14 is inclined to the maximum inclination angle, and the heater 13A is supplied with power to blow hot air into the bathroom 19. A thermistor for detecting the temperature heated by the heater 13A is provided at the hot air outlet of the heater frame 13, and the voltage of the thermistor is transmitted to the AD converter in the microcomputer, and the heater 13A is turned on and off in a predetermined manner. Done at temperature. When ventilating the bathroom and blowing air into the bathroom, the damper 14 is inclined at a set angle based on the setting of the air flow rate into the bathroom, exhausting from the exhaust port 11 and blowing into the bathroom, and a heater By performing on / off control of 13A, the drying mode can be set. The drying mode may be an intermittent ventilation method by repeating the maximum and minimum inclination angles of the damper 14. When the cool air mode is selected, in the operation in the heating mode described above, the cool air can be blown to the bathroom 19 like a fan by shutting off the power supply to the heater 13A.
[0050]
Further, the selection button can be provided with a selection button for ventilating only the bathroom or simultaneously ventilating other rooms of the building such as a dressing room together with the bathroom. In the case where such a selection button is provided, a shutter can be opened and closed at the sub-introduction ports 15 and 16 leading to the duct joints 6 and 7, and a motor and a drive mechanism are provided on the shutter. Open and close the shutter. Note that control of the angle of the damper 14 is not limited to simply controlling the angle, but also includes control of the opening degree of the damper 14.
[0051]
【The invention's effect】
According to the bathroom ventilator of the present invention, it is possible to improve the heating efficiency while improving the air suction efficiency while allowing ventilation of buildings other than the bathroom.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a main body case and a mounting bracket of a bathroom ventilation apparatus according to an embodiment of the present invention.
FIG. 2 is an explanatory view showing the periphery of an opening of a ceiling to which the bathroom ventilation device of FIG. 1 is attached.
FIG. 3 is an explanatory diagram showing an installed state of the bathroom ventilation device of FIG. 1 inside the building.
FIG. 4 is a perspective view showing an internal configuration of a main body case.
FIG. 5 is an explanatory diagram of an AC synchronous motor and a cam mechanism for driving a damper.
FIG. 6 is a perspective view of a blower case.
FIG. 7 is an explanatory view of an arrangement state of a fan case, a damper, and a heater part inside the main body case.
FIG. 8 is an explanatory view of a mounted state of a centrifugal blower and a fan motor.
[Explanation of symbols]
1 Bathroom ventilation device 2 Body case 3 Mounting bracket 4 Metal cover 5, 6, 7 Duct joint 8 Centrifugal blower 9 Blower case (blower room)
DESCRIPTION OF SYMBOLS 10 Exhaust air path 11 Exhaust port 12 Circulation air path 13 Heater frame 13A Heater 14 Damper 15, 16 Sub-introduction port 17 Rotary shaft of blower 18 Swing shaft of damper

Claims (3)

In the main body case installed in the mounting opening provided in the bathroom wall, a suction opening for introducing the air in the bathroom and a discharge opening for returning the introduced air into the bathroom again are formed . the wall portion, an exhaust port for exhausting air sucked from the bath in the bathroom outside is opened, inside the main body case, blower case is formed to store the blower for sucking air in the bathroom, in the blower case, An exhaust air passage for exhausting air introduced from the bathroom from the exhaust port to the outside of the bathroom is provided, and at least one of the blower case or the exhaust air passage, the air in the bathroom sucked by the blower is the discharge opening. circulation air passage back into the bathroom is provided from parts, the circulation air path and the exhaust air passage, the air blowing amount of the air outlet to the circulation air path is controlled by the angle of the damper, the blowing Is a bathroom ventilating device that is constituted by a centrifugal fan having an array of blades extending parallel to the axis of rotation of the air blowing device in a cylindrical,
While the rotation axis of the blower is directed parallel to the swing axis of the damper,
In the side plate portion of the blower case, an opening for sucking air by the blower is formed,
On the side wall of the main body case facing the side plate portion, a sub-inlet for introducing air inside the building other than inside the bathroom into the main body case is formed,
A bathroom ventilator characterized in that a motor of the blower is disposed between the side plate portion and the auxiliary inlet . The bathroom ventilator of claim 1,
A partition part that divides the blower into left and right parts is provided at a substantially central part in the axial direction of the blower, and air is sucked from the left and right parts of the partition part so that air can be blown from the outer peripheral part. Bathroom ventilator. 3. The bathroom ventilation apparatus according to claim 2 , wherein the blower chamber is formed to be separated from the upper bottom wall portion of the main body case, and an air passage for allowing air to pass between the blower chamber and the upper bottom wall portion is formed. Bathroom ventilator characterized by.

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