JPH06109303A - Ventilating fan for duct - Google Patents

Abstract

PURPOSE:To obtain the title fan whose cost is reduced, and which can be easily installed, and prevents dew from dropping in a bathroom. CONSTITUTION:A body 4, installed into an opening of a ceiling face 1, has an inlet port 2 at the bottom and an outlet port 3 on one side, and also an adapter 10 which contains an axial fan 5 and a motor 6, and is provided with an inlet side bellmouth 8 and a duct connecting opening 9. The adapter 10 is attached to the outlet port 3 and a duct 11 to the duct connecting opening 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan for a duct which is mounted on a ceiling surface of a bathroom and which is connected to a duct communicating with the outside to ventilate air in the bathroom.

[0002]

2. Description of the Related Art In recent years, a ventilation fan for a duct provided on a ceiling surface has become the mainstream in comparison with a ventilation fan provided on a wall because of room layout and the like.

Conventionally, this type of duct ventilation fan has generally been constructed as shown in FIGS. 9 and 10. That is, as shown in FIG. 9, the blades 105 are horizontally arranged inside a box-shaped main body 104 that is inserted and installed in the opening portion of the ceiling surface 101 and has the suction port 102 on the lower surface and the discharge port 103 on one side surface. A fixed electric motor 106 and a casing 107 that covers the blades 105 and guides air to the discharge port 103.
Is provided with a blower 108, a duct 110 is connected to the discharge port 103 via an adapter 109, and a louver 111 is provided on the suction port 102 side of the main body 104 so as to cover the suction port 102. A drain hole 112 for draining the condensed water was provided in 107.

When the ventilation fan is operated in the above structure, the humid air in the bathroom 113 is blown by the blower 108 into the main body 104.
The air is taken in and exhausted to the outside through the duct 110.
At this time, the moist air is sucked into the casing 107 to generate dew condensation water 114 in the casing 107, and the dew condensation water 114 is dripped into the bathroom 113 through the water drain hole 112.

Further, as shown in FIG. 10, there is also a structure in which a louver 111 is provided with a lighting device 115 and a suction port 102 of a main body 104 is provided with a filter 116.

[0006]

In such a conventional duct ventilation fan structure, the blower 108 is provided with the casing 10.
Since the height of the product cannot be reduced because 7 is required, and the electric motor 106 is also fixed inside the casing 107, when the electric motor 106 is maintained, the blower 108 is first.
Since it is necessary to remove the motor from the main body 104 and then to take out the electric motor 106 from the casing 107, it takes time to maintain.

In the former case shown in FIG. 9, when the ventilation fan is operated while taking a bath or the like, the dew condensation water 114 condensed in the casing 107 of the blower 108 drops into the bathroom through the drain hole 112 and comes into contact with the bather. There was a problem of giving discomfort.

Further, in the latter shown in FIG. 10, there is a problem that the lighting fixture 115 provided on the louver 111 protrudes from the ceiling surface 101 and the interior property is poor, and the air flow resistance of the filter 116 reduces the air volume.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above problems, and to provide a ventilation fan for a duct, which can reduce costs, improve workability, and prevent condensed water from falling into a bathroom. And

A second object is to make it easier to maintain the electric motor part from the indoor side.

A third object is to facilitate switching between air supply and exhaust from the indoor side.

A fourth object is to reduce the resistance in the ventilation passage and obtain a large air volume. A fifth object is to prevent the luminaire from protruding from the ceiling surface and limit the louver design.

A sixth object is to improve the collecting property of the filter, reduce the ventilation resistance, and reduce the reduction in air flow.

A seventh object is to reduce noise while maintaining a predetermined air volume.

An eighth object is to reduce the weight of the main body and reduce the cost.

[0016]

In order to achieve the above first object, the duct ventilation fan according to the present invention has a shape in which it is inserted and installed in an opening of a ceiling surface and has a suction port on a lower surface. A box-shaped main body with a discharge port formed on one side, an axial fan and an electric motor for driving the axial fan inside, and a suction side bell mouth and an adapter with a duct connection port, The adapter is attached to the discharge port, and the duct is connected to the duct connection port.

Further, in order to achieve the second object, the second
In this means, the adapter is detachably attached to the discharge port from the indoor side through the suction port of the main body.

Further, in order to achieve the third object, the third
In this means, the electric motor can be attached to and detached from the adapter from the inside of the main body.

In order to achieve the fourth object, the fourth
In this means, only the electric motor is projected into the main body so that the suction side area of the adapter is larger than the discharge side area.

Further, in order to achieve the fifth object,
This means is configured such that a lighting device is provided inside the main body.

Further, in order to achieve the sixth object,
This means has a structure in which a filter is obliquely provided inside the main body so as to correspond to the discharge port.

In order to achieve the seventh object,
The means includes a surface corresponding to the axial direction of the axial fan, and the sound absorbing material is provided on the inner surface of the main body.

In order to achieve the eighth object,
The means has a structure in which the main body is formed in an arc shape from the side surface corresponding to the discharge port to the top surface.

[0024]

According to the present invention, by the constitution of the above-mentioned first means, the casing for the blower is not required inside the main body, the height of the product can be reduced, and the condensed water is accumulated and dropped in the casing. Without doing so, the moist air in the bathroom can be discharged outdoors.

Further, by the constitution of the second means, the casing is not required and the electric motor can be directly removed from the suction port on the lower surface of the main body, so that the electric motor portion can be easily maintained from the indoor side.

Further, with the configuration of the third means, the electric motor and the axial flow fan portion can be directly removed from the suction port on the lower surface of the main body, so that the switching between air supply and exhaust can be made easier from the indoor side.

Further, by the constitution of the fourth means, the resistance due to the electric motor in the ventilation passage is eliminated, and a large amount of air can be exhausted to the outside.

Further, according to the constitution of the fifth means, since the lighting equipment is housed inside the main body, the lighting equipment does not project from the ceiling surface, and the interior quality is improved.

Further, since the suction area of the filter is increased and the ventilation resistance is reduced by the structure of the sixth means, the collection efficiency of the filter is increased and the decrease in the air volume can be reduced.

Further, the configuration of the seventh means makes it possible to reduce noise without reducing the air volume.

Further, the constitution of the eighth means eliminates one side surface of the main body, and the material cost and weight of the main body can be reduced.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. As shown in the figure, a box-shaped main body 4 having a suction port 2 on a lower surface and a discharge port 3 formed on one side surface, which is inserted and installed in an opening of a ceiling surface 1, and an axial fan inside. 5 and an electric motor 6 for driving the axial fan 5 supporting legs 7
Hold through the suction side bell mouth 8 and duct connection port 9
Is provided, the suction side bell mouth 8 of the adapter 10 is attached to the discharge port 3 of the main body 4, and the duct 11 communicating with the outdoors is connected to the duct connection port 9 of the adapter 10.
Connect to. Then, the louver 12 having a vent hole (not shown) is attached so as to cover the suction port 2 of the main body 4.

In the above structure, when the ventilation fan is installed in the ceiling surface 1 of the bathroom 13, the axial fan 5 is driven by the electric motor 6 so that the moist air in the bathroom 13 passes through the louver 12 and the inside of the main body 4 is passed. Is sucked into the air, passes through the inside of the adapter 10, and is exhausted to the outside through the duct 11.

As described above, according to the duct ventilation fan of the first embodiment of the present invention, unlike the conventional case, the casing forming the blower is not required, and the height of the main body 4 can be reduced and the cost can be reduced. .

Further, it is possible to prevent the condensed water from collecting and dropping into the bathroom 13. (Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, a plurality of burring parts 15 into which screws are screwed are formed on the peripheral wall of the discharge port 3 of the main body 4a,
A flange portion 16 extending outward is formed on the suction side bell mouth 8 of the adapter 10a, and the flange portion 16 is provided with a noble insertion hole 18 into which a screw 17 is noblely inserted. In the above configuration, when assembling the ventilation fan, the adapter 10a is inserted into the discharge port 3 from the inside of the main body 4a corresponding to the room 13, and the screw 17 is screwed into the burring portion 15 from the inside of the main body 4a via the flange 16. The adapter 10a by attaching it to the duct connection port 9 of the adapter 10a.
Connect and assemble. When the electric motor 6 is maintained, the screw 17 is warmed from the inside of the main body 4a and the adapter 10a is removed from the discharge port 3 of the main body 4a.
You can perform maintenance by pulling it out. As described above, according to the second embodiment of the present invention, the electric motor 6 can be easily maintained from the room 13 side. Further, when the spiral duct is used as the duct, the spiral duct can be pulled out together with the adapter 10a by pulling out the adapter 10a into the room, and air leakage can be prevented by using it at the connecting portion between the adapter 10a and the spiral duct. The tape can be easily fixed.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the figure, a fixing portion 2 having a screw hole 20 on the inner surface of an adapter 10b attached to the discharge port 3 of the main body 4
No. 1 is provided, and the noble insertion hole 23 of the screw 22 is provided in the support leg 7 a that supports the electric motor 6 to which the axial fan 5 is attached.

In the above structure, when assembling the ventilation fan, the support leg 7a for supporting the electric motor 6 to which the axial fan 5 is attached is inserted into the adapter 10b from the inside of the main body 4 corresponding to the room 13, and the support leg is supported by the screw 22. 7a is attached to the fixed portion 21 in the adapter 10b, and the electric motor 6 is supported and assembled.

When performing maintenance of the electric motor 6,
The screw 22 can be warmed from the inside of the main body 4 to remove the electric motor 6 to which the axial fan 5 is attached, and the electric motor 6 can be pulled out into the room 13 for maintenance.

When switching between air supply and exhaust,
After removing the electric motor 6 with the axial fan 5 attached, 1
By changing the direction of 80 ° and mounting the electric motor 6 in the adapter 10b, the exhaust ventilation fan can be converted into an air supply ventilation fan.

(Fourth Embodiment) A fourth embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the electric motor 6 for driving the axial fan 5 is projected from the adapter 10c to the main body 4 so that only the axial fan 5 is located in the adapter 10c.
The electric motor 6 is supported by the supporting legs 7b provided on the adapter 10c.

In the above structure, when the ventilation fan is operated, the electric motor 6 drives the axial fan 5 and the electric motor 6 is internally provided.
The air circulates in the adapter 10c in which the air flow does not exist, so that the circulation resistance of the air is smaller than that in the case where the electric motor exists in the adapter, and the passing air volume is increased.

(Fifth Embodiment) A fifth embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in FIG.
Is provided and configured.

Thus, according to the fifth embodiment of the present invention,
Since the lighting fixture 25 is provided inside the main body 4 housed in the ceiling 1, the surface of the ceiling 1 can be kept clean like the lighting fixture embedded in the ceiling.

Further, by replacing the louver 12 according to the season or the like, it is possible to irradiate the lighting fixture 25 inside the main body 4 and to provide a unique lighting effect.

(Sixth Embodiment) A sixth embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the discharge port 3 is provided inside the main body 4.
Corresponding to the above, the filter 26 is provided obliquely so that the area of the filter 26 is larger than the area of the suction port 2 of the main body 4.

As described above, according to the sixth embodiment of the present invention,
Since a certain amount of intake air passes through the filter 26 having a wide area, the collection rate is improved, and since the ventilation resistance is reduced, it is possible to reduce the influence on the reduction in air volume.

(Seventh Embodiment) A seventh embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the sound absorbing material 27 is provided on the inner surfaces of the side wall 4a and the top surface 4b corresponding to the axial direction of the axial fan 5 provided in the adapter 10 attached to the discharge port 3 of the main body 4. The configuration.

In the above structure, when the axial fan 5 is driven by the electric motor 6, the sound generated from the axial fan 5 goes straight in the axial direction of the axial fan 5, and is absorbed by the sound absorbing material 27 provided corresponding to the axial direction. The sound is absorbed, the sound is attenuated, and the noise toward the room 13 side is alleviated.

Thus, according to the seventh embodiment of the present invention,
Since the sound absorbing material 27 can be provided by using the space in the main body 4 so as not to become a resistance to ventilation, it is possible to reduce noise while the air volume is not reduced.

(Embodiment 8) An eighth embodiment of the present invention will be described below with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the figure, a discharge port 3 to which an adapter 10 having an axial fan 5 driven by an electric motor 6 is attached is provided on one side wall, and a wall portion corresponding to the discharge port 3 is circled from the side wall to the top surface. The arcuate portion 28a is formed to configure the main body 28.

In the above structure, when the axial load fan 5 is driven by the electric motor 6, the suction port 2 of the main body 28 causes the interior 13
Air of the axial fan 5 is smoothly sucked into the main body 28 along the arc-shaped portion 28a of the main body 28.
Is sucked into and discharged outside the room.

As described above, according to the eighth embodiment of the present invention,
Since the arcuate portion 28a is formed so as to serve as the side surface and the top surface of the main body 28, it is possible to reduce the weight of the main body and save the material cost.

[0057]

As is apparent from the above embodiments, according to the present invention, a box body having a shape to be inserted and installed in an opening portion of a ceiling surface, having a suction port on the lower surface, and forming a discharge port on one side surface -Shaped main body, an axial fan and an electric motor that drives the axial fan are held inside, and a suction side bell mouth and an adapter with a duct connection port are provided at the discharge port, so a casing is not necessary A duct ventilation fan whose height can be reduced can be provided. Further, since the adapter is detachably provided from the indoor side to the discharge port through the suction port of the main body, maintenance of the electric motor part becomes easy.

Since the electric motor can be attached to and detached from the adapter from the inside of the main body, it is possible to switch between air supply and exhaust from the indoor side.

Since only the axial fan is provided in the adapter, the resistance in the ventilation passage is reduced and a large air volume can be obtained.

Further, since the lighting equipment is provided inside the main body, the louver design is not limited.

Further, since the filter is provided obliquely inside the main body so as to correspond to the discharge port, it is possible to improve the collecting property of the filter and reduce the decrease in the air volume.

Further, since the sound absorbing material is provided on the inner surface of the main body including the surface corresponding to the axial direction of the axial fan, the noise can be reduced while maintaining a predetermined air volume.

Further, since the main body is formed in an arc shape from the side surface corresponding to the discharge port to the top surface, it is possible to reduce the weight and the cost.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an installed state of a duct ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a disassembled state of the duct ventilation fan of the second embodiment.

FIG. 3 is a sectional view showing a disassembled state of the duct ventilation fan of the third embodiment.

FIG. 4 is a sectional view showing an installed state of a duct ventilation fan according to the fourth embodiment.

FIG. 5 is a sectional view showing an installation state of the duct ventilation fan of the fifth embodiment.

FIG. 6 is a cross-sectional view showing an installed state of the duct ventilation fan of the sixth embodiment.

FIG. 7 is a sectional view showing an installation state of the duct ventilation fan of the seventh embodiment.

FIG. 8 is a sectional view showing an installed state of the duct ventilation fan of the eighth embodiment.

FIG. 9 is a cross-sectional view showing an installed state of a conventional duct ventilation fan.

FIG. 10 is a cross-sectional view showing the installation state of the duct ventilation fan of another example.

[Explanation of symbols]

 1 Ceiling surface 2 Suction port 3 Discharge port 4,28 Main body 5 Axial fan 6 Electric motor 8 Suction side bell mouth 9 Duct connection port 10, 10a, 10b, 10c Adapter 11 Duct 12 Louver 13 Indoor 25 Lighting fixture 26 Filter 27 Sound absorbing material 28a arc-shaped part

Claims (8)

[Claims] 1. A box-shaped main body having a suction port on a lower surface and a discharge port formed on one side surface in a shape to be inserted and installed in an opening of a ceiling surface, and an axial fan and an axial fan inside. A duct ventilation fan configured to hold a driving electric motor, be equipped with a suction side bell mouth, and an adapter having a duct connection port, the adapter being attached to the discharge port, and the duct being connected to the duct connection port. 2. The duct ventilation fan according to claim 1, wherein the adapter is detachably attached to the discharge port from the indoor side through the suction port of the main body. 3. The duct ventilation fan according to claim 1, wherein the electric motor is attachable to and detachable from the adapter from the inside of the main body. 4. The duct ventilation fan according to claim 1, wherein only the electric motor is provided so as to protrude into the main body so that the suction side area of the adapter is larger than the discharge side area. 5. A lighting device is provided inside the main body.
Ventilation fan for duct according to 2 or 3. 6. The duct ventilation fan according to claim 1, wherein a filter is provided obliquely inside the main body so as to correspond to the discharge port. 7. The duct ventilation fan according to claim 1, wherein a sound absorbing material is provided on an inner surface of the main body including a surface corresponding to an axial direction of the axial flow fan. 8. The duct ventilation fan according to claim 1, wherein the main body is formed in an arc shape from the side surface corresponding to the discharge port to the top surface.