JP2004162950A - Ventilator for multiple room - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathroom ventilator of low noise, capable of reducing air resistance, and being improved in ventilating efficiency. <P>SOLUTION: A main suction port 64, a sub-suction port 69 and an air discharge port 70 are formed on a main body case 61 mounted in a bathroom B with the bathroom ventilator, a fan case 62 is accommodated inside of the main body case 61, a multiple-blade fan 63 in the fan case 62 configurates a two-stage type multiple-blade fan, and air introduction opening parts 73A, 74A for introducing the air from the main suction port 64, and the sub-suction ports 67A, 67B, 67C are formed on the both upper and lower face parts faced to the air suction portion 87A of the multiple-blade fan 63, of the fan case 62. The bathroom ventilator has an air trunk 77 for introducing the air from the sub-suction ports 67A, 67B, 67C to the air introduction opening parts 73A at a ceiling part 72 side, between the fan case 62 and the ceiling part 72 of the main body case 61, and the air can be sucked from both upper and lower face sides of the fan case 62. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bathroom ventilator installed in a bathroom, and more particularly, to a bathroom ventilator having improved suction efficiency when performing multi-room ventilation.
[0002]
[Prior art]
BACKGROUND ART Conventionally, as a bathroom ventilation device, a “bathroom ventilation dryer” described in JP-A-9-126516 (see Patent Document 1) is known.
[0003]
This "bathroom ventilation dryer" is designed to perform drying, heating, ventilation, and blowing of cool air using a single blower fan, and has an object to facilitate control of a damper.
[0004]
FIG. 9 shows a "bathroom ventilation dryer" described in JP-A-9-126516.
[0005]
JP-A-9-126516 discloses 0012
According to the description of the invention, this "bathroom ventilation dryer" comprises a "suction port 6, an air outlet 7, a ventilation port 8, and an air passage 20 opened to the ventilation port 8. A main body A, a flow dividing plate 21 provided in the main body A to divide the air path 20 into a first air path 22 and a second air path 23, and air from the suction port 6 provided in the main body A. A blower fan 17 that sucks and discharges the air toward the first and second air passages 22 and 23, an electric motor 18 that rotates the blower fan 17, and a power supply provided at the outlet 7 of the main body A. The heater 15 that generates heat, a damper 30 that is provided in the main body A and moves to a first position and a second position, and a heater 15 that is provided in the main body A and opens and closes the first air passage 22. A moving shutter 34; and a holding mechanism 36 for holding the shutter 34 in a closed position. When the damper 30 is in the first position, the second air passage 23 is opened to the outlet 7, and the second air passage 23 and the ventilation port 8 are closed. When the damper 30 is in the second position, the second air passage 23 is closed. The passage 23 is opened to the ventilation opening 8, the second air passage 23 and the outlet 7 are closed, the shutter 34 is always in a closed position, and the shutter is in an open position by wind pressure. The configuration can be switched to a state in which the holding of the shutter 34 is released by the above-mentioned configuration. "
[0006]
As another example, a “bathroom ventilation device” shown in FIG. 10 is known. In this bathroom ventilator, a main body case 40 inserted into a mounting opening of a bathroom ceiling includes a main intake port 41 for sucking air inside the bathroom, a sub-suction duct joint 42, and an exhaust duct joint 43. I have. The main air inlet 41 is covered by a front panel 44 having air permeability. A fan case 47 is provided inside the main body case 40, and a bell mouth 48 is formed below the fan case 47. An exhaust port 49 is formed on a side portion of the fan case 47, and the exhaust port 49 is connected to the exhaust duct joint 43 via an exhaust air passage 50 of the main body case 40. A damper 51 is provided in the exhaust air path 50, and a lower part of the damper 51 is a circulation air path 52 for circulating the air in the exhaust air path 50 to the bathroom B. The damper 51 rotates in the upward direction along the dotted line in the figure. A heater 53 is provided which can heat the bathroom by passing air through the circulation air passage 52 when it moves. A multi-blade fan 54 is provided inside the fan case 47, and the multi-blade fan 54 is rotated by a motor 55.
[0007]
[Patent Document 1]
JP-A-9-126516 (paragraphs 0012 and 0013, FIG. 1)
[0008]
[Problems to be solved by the invention]
However, the bathroom ventilation dryer described in Japanese Patent Application Laid-Open No. 9-126516 inhales only the air in the bathroom from the blower fan 17 and exhausts the air from the ventilation port 8, and exhausts the air in the rooms other than the bathroom. It does not have the function to perform.
[0009]
If the air in the room other than the bathroom is to be sucked by the bathroom ventilation dryer and exhausted to the outside of the building without returning to the bathroom, the box 4 containing the ventilation fan 17 of the ventilation drying device is required. It is necessary to form an opening and a duct communicating with a room other than the bathroom on the first side plate 1 so that air entering from the duct is sucked through the suction port 6.
[0010]
However, with such a configuration, air entering from a room other than the bathroom bypasses around the partition plate 5 and is sucked from the suction port 6 of the air introduction opening, so that the suction resistance is large and the suction amount is small, There are problems such as a loud suction noise.
[0011]
In addition, in the configuration shown in FIG. 10, since the main intake port 41 for intake is formed only on the lower side of the fan case 47, when air is sucked from both the main intake port 41 and the sub-suction duct joint 42, The air sucked from the sub-suction duct joint 42 turns to the lower side of the fan case 47 and then is sucked from the bell mouth 48. For this reason, there is a concern that the air resistance and the intake sound sucked from the sub-suction duct joint 42 will increase, and if a plurality of sub-suction duct joints 42 are provided, the ventilation capacity will be insufficient.
[0012]
Therefore, a bathroom ventilator according to the present invention is a bathroom ventilator having a function of discharging room air other than a bathroom to the outside of a building. It is an object of the present invention to provide a bathroom ventilator capable of improving the ventilation capacity by increasing the amount of air suctioned from a fan, reducing the power consumption of a blower fan, and reducing suction resistance and suction noise.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a first multi-room ventilator includes a main intake port for sucking indoor air, a sub intake port for sucking air in another room, and exhausting the sucked air to the outside of the building. And a fan case containing a multi-blade fan is housed inside the main body case. The multi-blade fan is provided with a partition at an intermediate portion of a rotation center axis. The blades are provided on the outer peripheral edges of both front and back surfaces, and an air suction part is formed at the center of the rotation area of each blade on both surfaces to constitute a two-stage multi-blade fan. .
[0014]
According to such a bathroom ventilation device, the multi-blade fan is provided with a partition portion at an intermediate portion of the rotation center axis, and a wing portion is provided at an outer peripheral edge of both front and back surfaces of the partition portion. An air suction part is formed in the center of the rotation area of the wing part to form a two-stage multi-blade fan, so that air can be sucked from both sides of the multi-blade fan. Is stored in the fan case and bell mouths are formed on both sides of the fan case, so that air can be sucked from both upper and lower sides of the fan case.
[0015]
The second multi-room ventilator is the multi-room ventilator according to claim 1, wherein an exhaust port of the fan case is connected to the exhaust port of the main body case, and the multi-ventilator of the fan case. An air introduction opening for introducing air from the main intake port and the sub intake port is provided on both front and rear surfaces facing the air suction part of the wing fan, and is provided between the fan case and the back wall of the main body case. Further, an air passage for introducing air from the sub intake port to the air introduction opening on the back wall side is formed, and the air can be sucked from both sides of the fan case.
[0016]
According to such a bathroom ventilator, an air passage is formed between the fan case and the main body case, through which air introduced from the sub-intake port is formed, and the air introduction openings are provided on both sides of the fan case. Even if the position and shape of the fan case differ from the position and shape of the fan case with respect to the position of the sub-inlet of the main case, even if air outside the bathroom is introduced from the sub-inlet, Air is introduced into the air introduction opening from the air passage between the walls, and the air can be sucked from the upper and lower surfaces of the fan case.
[0017]
Thus, when air outside the bathroom is introduced from the sub intake port, air resistance is reduced, ventilation efficiency is improved, noise is reduced, and power consumption of the motor that rotates the multi-blade fan can be reduced.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a bathroom ventilation device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a main configuration of a bathroom ventilation device according to an embodiment.
[0019]
A fan case 62 is provided inside a main body case 61 of the bathroom ventilation device 60, and a two-stage multiblade fan 63 is provided inside the fan case 62. On the side of the bathroom B of the main body case 61, a main intake port 64 for sucking air in the bathroom B and an exhaust port 65 for circulation are opened. A makeup front panel 66 that covers a main intake port 64 and a circulation exhaust port 65 is detachably attached to an edge of the main body case 61 on the bathroom B side. The front panel 66 is provided with a large number of vents for passing air through the main intake port 64 and the circulation exhaust passage 65.
[0020]
The three side walls 68A and 68C (the back side in FIGS. 1 and 2) and 68D (the front side in FIGS. 1 and 2) of the main body case 61 which are not communicated with the exhaust duct joint 71 have sub intake ports 67A and 67B. 67C is opened, and a sub-suction duct joint 69 is attached in contact with the peripheral portion of the sub-intake ports 67A, 67B, 67C.
[0021]
An exhaust port 70 (see FIG. 2) is opened in the other side wall portion 68B of the main body case 61, and an exhaust duct joint 71 is attached to a peripheral portion of the exhaust port 70 in contact therewith. The sub-suction duct joints 69 and 71 are cylindrical with a hollow inside. The inside of the sub suction duct joint 69 communicates with the inside of the main body case 61, and the inside of the exhaust duct joint 71 communicates with an exhaust port (not shown) of the air exhausted from the multiblade fan 63 of the fan case 62. are doing.
[0022]
A motor 78 for rotating the multi-blade fan 63 is attached to a ceiling 72 corresponding to a back wall of the main body case 61. The motor 78 is provided and fixed inside a storage room 78 </ b> A formed in the ceiling 72 of the main body case 61. Bell mouths 73 and 74 having air inlets 73A and 74A for sucking air from both upper and lower sides of the multi-blade fan 63 are attached above and below the fan case 62 that stores the multi-blade fan 63, respectively.
[0023]
The fan case 62 is supported by four columns 75 (see FIG. 2) projecting downward from the ceiling 72 of the main body case 61. That is, the fan case 62 and the upper bell mouth 73 are assembled in advance before being attached to the ceiling 72, and a screw tip (not shown) of a screw (not shown) is inserted from the inside of the upper bell mouth 73 toward the ceiling 72. The fan case 62 is held by the ceiling portion 72 by inserting the screw and screwing the screw into the screw hole of the column 75.
[0024]
A gap is provided between the upper bell mouth 73 of the fan case 62 and the ceiling 72 serving as the back wall of the main body case 61, and this gap is formed by the air sucked from the sub intake ports 67A, 67B, 67C. The air passage 77 is provided.
[0025]
The bell mouth 74 below the fan case 62 is attached to the lower edge of the fan case 62 after attaching the multi-blade fan 63 to the rotating shaft 79 of the motor 78. That is, the lower bell mouth 74 passes the bolt inserted into the lower bell mouth 74 through the hole of the projection 80 provided on the side wall of the fan case 62, and then screwes a nut to the screw portion of the bolt to fasten. Fixed.
[0026]
The fan case 62 has a substantially cylindrical shape, and has an exhaust port 81 on the peripheral wall of the cylindrical shape. The exhaust port 81 exhausts the air sucked from the intake ports 73A, 74A of the bell mouths 73, 74 from between the wings 87 of the multi-blade fan 63. An exhaust air path 82 is formed in the main body case 61 and communicates with an exhaust port 81. A damper 83 is pivotally secured to a lower portion of a side wall portion 82A on the outlet side of the exhaust air path 82. A step portion 84 capable of supporting both side portions of the damper 83 is provided on a side wall portion 82A of the exhaust air passage 82. The step portion 84 holds both sides of the damper 83 when the damper 83 is inclined so as to guide the air flowing from the exhaust air passage 82 to the exhaust port 70 to the exhaust port 65 for circulation.
[0027]
A PTC heater 85 is provided in the circulation exhaust passage 65. The PTC heater 85 has a large number of fins so that air can pass therethrough, and air passes between the fins. The fins of the PTC heater 85 generate heat when energized, warm the air sent to the circulation exhaust passage 65, and send the air to the bathroom B.
[0028]
As shown in FIG. 3, the multi-blade fan 63 has a cylindrical cage shape, and a partition plate 86 is provided at the center in the rotation center axis direction. A large number of wings 87 having an arc-shaped cross section are formed on the upper and lower surfaces of the outer peripheral edge of the partition plate 86. The ends of the wing portions 87 are connected by an annular portion 88. Air suction portions 87A and 87B are formed at the center of the rotation area of the wing portion 87 on both the upper and lower surfaces of the partition plate 86, and constitute a two-stage multi-blade fan 63.
[0029]
A cylindrical portion 89 is formed at the center of the partition plate 86, and the rotary shaft 79 of the motor 78 is held by the cylindrical portion 89. The cross section inside the cylindrical portion 89 and the cross section at the tip end of the rotating shaft 79 are formed, for example, in a D-shaped cross section so as to mesh with each other, and a detent is formed. And the rotating shaft 79 is fastened. The multi-blade fan 63 has an upper and lower two-stage configuration, and can suck air from both intake ports 73A and 74A of upper and lower bell mouths 73 and 74.
[0030]
On both sides of the damper 83, there are formed shielding plates 90 for preventing air from flowing out to the circulation exhaust passage 65 when the circulation exhaust passage 65 is closed and cut off from the exhaust air passage 82. Abuts against the opening edge of the circulation exhaust passage 65, thereby closing both sides of the damper 83 and the opening edge of the circulation exhaust passage 65.
[0031]
The opening edge of the circulation exhaust passage 65 is formed by a support substrate 91 that supports the PTC heater 85. An opening 92 of the circulation exhaust passage 65 is formed in the support substrate 91, and a PTC heater 85 is attached to an opening edge of a lower surface of the opening 92. A cover 93 that covers the periphery of the PTC heater 85 is attached to the lower surface of the support substrate 91.
[0032]
An opening 94 is provided in the side wall portion 82A of the main body case 61 forming the exhaust air passage 82, and the rotation shaft 94A (see FIG. 3) is inserted through the opening 94. A crank-shaped link 95 (see FIG. 5) is provided at an end of the rotary shaft 94A on the side of the exhaust air passage 82, and this link 95 is formed in a cam groove 96 (see FIG. 3) formed in the shielding plate 90. Is engaged with. A motor 97 shown in FIG. 5 is disposed outside the side wall portion 82A. When the rotation shaft of the motor 97 rotates, the above-described link 96 rotates and the damper 83 can swing.
[0033]
In this bathroom ventilation device, a main intake port 64 for sucking air inside the bathroom B, a sub intake port 69 for sucking air outside the bathroom B, and a suction air An exhaust port 70 for exhausting outside the building is provided. Inside the main body case 61, a fan case 62 containing a multi-blade fan 63 is stored, and the multi-blade fan 63 is provided with a partition plate 86 vertically divided at an intermediate portion of a rotation center axis. The upper and lower outer peripheral edges of the partition plate 86 are provided with wing portions 87, and the upper and lower wing portions 87 are formed with air suction portions 87A at the center of the rotation area to form a two-stage multi-blade fan. I have.
[0034]
Note that the partition plate 86 of the multi-blade fan 63 is not necessarily located at the center, but may be provided at a position offset toward the air suction part 87A or 87B. The air on either side of the portions 87A and 87B may flow into the opposite side and be exhausted.
[0035]
An exhaust port 81 of the fan case 62 is connected to an exhaust port 70 of the main body case 61, and a main intake port 64 and a sub intake port are provided on both upper and lower surfaces facing the air suction portion 87 </ b> A of the multi-blade fan 63 of the fan case 62. Air introduction openings 73A and 74A for introducing air from the ports 67A, 67B and 67C are provided. Further, an air passage for introducing air from the sub intake ports 67A, 67B, 67C into the air introduction opening 73A on the ceiling 72 side between the fan case 62 and the ceiling 72 (back wall) of the main body case 61. The fan case 62 is formed so that air can be sucked from both upper and lower surfaces of the fan case 62.
[0036]
Thus, when air outside the bathroom is introduced from the sub intake ports 67A, 67B, 67C, the air resistance is reduced, the ventilation efficiency is improved, the sound is quieter, and the motor 78 for rotating the multi-blade fan 63 is improved. Power consumption can be reduced. Further, even if the arrangement position and shape of the fan case 62 differ depending on the model, model number, etc., air can be sucked from both upper and lower surfaces of the fan case 62.
[0037]
FIGS. 6, 7 and 8 show a bathroom ventilator 60 in which a two-stage multi-blade fan 63 is installed with its rotating shaft 79 directed horizontally. In this bathroom ventilation device 60, since the rotation axis 79 of the multi-blade fan 63 is oriented in the horizontal direction in parallel with the rotation center axis of the damper 83, the air discharged from the fan case 62 has a uniform flow velocity. The direction can be changed by the damper 83. Bell mouths 73 and 74 are provided on both sides of the fan case 62,
A fan case 62 is provided inside a main body case 61 of the bathroom ventilation device 60, and a two-stage multiblade fan 63 is provided inside the fan case 62. On the side of the bathroom B of the main body case 61, a main intake port 64 for sucking air in the bathroom B and an exhaust port 65 for circulation are opened. A makeup front panel 66 that covers a main intake port 64 and a circulation exhaust port 65 is detachably attached to an edge of the main body case 61 on the bathroom B side. The front panel 66 is provided with a large number of vents for passing air through the main intake port 64 and the circulation exhaust passage 65. Air is sucked into the left and right bell mouths 73 and 74 via an air passage 77. 6 is a mounting bracket attached to the main body case 61 to hold the motor 78. A reference numeral 101 in FIG. 8 is a metal case that covers the main body case 61 and covers the outside thereof. Reference numeral 103 denotes an opening which is attached to the lower end edges of the main body case 61 and the metal case 101, and is used to mount the main body case 61 and the metal case 101 in the mounting opening of the ceiling.
[0038]
【The invention's effect】
According to the bathroom ventilator of the present application, when air outside the bathroom is introduced from the auxiliary intake port, the air resistance is reduced, the ventilation efficiency is improved, the sound is quieter, and the motor that rotates the multi-blade fan Power consumption can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a main configuration of a bathroom ventilation device according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a main configuration of the bathroom ventilator according to the embodiment of the present invention.
FIG. 3 is a sectional view showing an upper configuration of the bathroom ventilator shown in FIGS. 1 and 2;
FIG. 4 is a perspective view of the multi-blade fan shown in FIGS.
FIG. 5 is a longitudinal sectional view on the damper side of the bathroom ventilator shown in FIG. 3;
FIG. 6 is a diagram showing an installation example of a multi-blade fan of a bathroom ventilation device according to another embodiment.
FIG. 7 is a diagram showing a cross-sectional configuration of the bathroom ventilation device of FIG. 6;
FIG. 8 is an exploded perspective view of the bathroom ventilator of FIG. 6;
FIG. 9 is a cross-sectional view of a bathroom ventilation dryer disclosed in JP-A-9-126516, which is a conventional bathroom ventilation device.
FIG. 10 is a schematic view of another conventional bathroom ventilation device.
[Explanation of symbols]
B Bathroom 60 Bathroom ventilator 61 Body case 62 Fan case 63 Multi-blade fan 64 Main intake port 65 Circulating exhaust passage 66 Front panel 67 Sub intake port 70 Exhaust port 73, 74 Bell mouth 73A, 74A Inlet port 77 Air path 78 Motor 81 Exhaust port 82 Exhaust air path 87A, 87B Air suction unit

Claims (2)

A main intake port for sucking room air, a sub intake port for sucking air in other rooms, and an exhaust port for exhausting the sucked air out of the building are provided.
Inside the main body case, a fan case having a built-in multi-blade fan is stored, and the multi-blade fan is provided with a partition portion at an intermediate portion of a rotation center axis, and at an outer peripheral edge of both front and back surfaces of the partition portion. A multi-room ventilator, wherein a wing portion is provided, and an air suction portion is formed at the center of the rotation area of each wing portion on both surfaces to form a two-stage multi-blade fan. The multi-room ventilation device according to claim 1,
An exhaust port of the fan case is connected to the exhaust port of the main body case, and the main intake port and the sub intake port are provided on both front and rear sides of the fan case facing the air suction portion of the multi-blade fan. An air introduction opening for introducing air from the air inlet is provided between the fan case and the rear wall of the main body case. A ventilator for a multi-room, wherein a passage is formed and air is sucked from both sides of the fan case.

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