JP2003042499A - Ventilation fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation fan the easily contaminable inexpensive parts of which can be replaced easily without replacing an inexpensive motor, because the motor is not contaminated with oily dust, and the main body of which can be cleaned easily by only dipping the main body in a cleaning solution, because the main body is isolated from the motor. SOLUTION: The motor 5 is housed in a motor chamber 8 in a state where the motor 5 is isolated from a ventilation path through which soot, etc., flows and a supply fan 13 is journaled by the main body 2 of the ventilation fan. In addition, the main body 2 is attachably/detachably arranged and the rotating shaft 9 of the motor 5 and the rotating shaft 16 of the fan 13 are connected to each other through an attachable/detachable connecting shaft 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan which is attached to a kitchen, a bathroom, a toilet or the like and discharges oil smoke, moisture and the like to the outside of the room.

[0002]

2. Description of the Related Art Conventionally, a ventilation fan has been used for discharging oil smoke in the kitchen to the outside, for ventilating the air in the room, and for removing moisture in the bathroom. For example, as shown in FIGS. 4 and 5, the ventilation fan 31 used above the range of the kitchen has a hood main body 33 having a ventilation fan mounting hole 32 that opens as a ventilation passage between the front surface and the bottom surface and that mounts the ventilation fan 31 on the back surface. The filter 34 is attached to the lower surface of the hood body 33, and the front hood 35 is attached to the front surface.

Further, as shown in FIG. 5, the ventilation fan 31 is
The body frame 36 is provided.
Is inserted and mounted in a mounting frame 38 opened on the wall surface, a motor 39 is supported in the center thereof, a blower fan 40 driven by the motor 39 is provided, and a shutter portion 41 is provided at the outdoor opening. Further, a power switch (not shown) for turning on / off the power of the motor 39 is fixed to the front lower corner of the main body frame 36, and the power switch operating string 42 hangs downward from the power switch operating string 42.
The power switch is turned on and off by pulling 2.

[0004]

However, in the conventional ventilation fan 31, the motor 39 has the main body frame 36.
Since it is built into the fan and is integrally formed with the blower fan 40 or is directly connected to the motor rotating shaft, it is impossible to remove only the motor 39 to wash away oil stains and the like on other components. For example, since the root portion of the propeller-shaped blower fan 40, the drum-shaped blower fan 40, or the peripheral fittings and the main body frame 36 are extremely dirty due to the passage of oil smoke, they should be washed by soaking them in a detergent or the like. Although it is the simplest and most effective, it cannot be soaked and washed because the motor 39, which is weak against water, is integrally incorporated. Therefore, not only the motor 39, but also the peripheral metal fittings, the main body frame 36 and the like must be wiped off the oil dust while being attached to the mounting frame 38.

When the occupants of a rental condominium or apartment are changed, the exhaust fan 31 adhered so strongly that oil dust cannot be removed even if it is washed, even if the function is safe, the entire exhaust fan 31 can be removed. It was useless because it had to be replaced. In particular, the motor 39 is hard to break down and is expensive, but has to be replaced.

Further, in the conventional ventilation fan 31 described above,
Since the blowing effect was not obtained unless the blower fan 40 was formed so as to expand outward from the size of the motor 39, the blower fan 40 had to be made large and wind efficiency was reduced. There was also the problem of not being very good.

The present invention has been made in view of the above problems, and since the motor is not contaminated with oil dust, other inexpensive parts that are easily contaminated can be easily replaced without replacing the expensive motor. Another object of the present invention is to provide a ventilation fan in which the motor is independent of the ventilation fan main body, so that the whole ventilation fan main body can be soaked and washed to easily remove dirt.

[0008]

The ventilation fan according to claim 1 of the present invention is characterized in that the motor is housed in the motor housing chamber while being isolated from the ventilation passage through which oil smoke or the like passes, and the ventilation fan is pivotally supported by the ventilation fan body. At the same time, the ventilating fan body is detachably arranged, and the motor rotating shaft and the fan rotating shaft are connected by a connecting shaft that is removable.

By adopting such a structure, the connecting shaft transmits the power of the motor to the blower fan to rotate the motor. On the other hand, since the oil dust does not adhere to the motor, it must be cleaned. When cleaning other parts, the connecting shaft can be removed, the ventilation fan main body can also be removed from the wall, etc., and the parts can be washed by soaking.
Further, the connecting rod, the blower fan, and the peripheral parts thereof become extremely dirty, but they can be replaced separately from the motor.

A ventilation fan according to a second aspect of the present invention is characterized in that, in the first aspect, the range hood is provided, and
In this range hood, the motor accommodating chamber is formed, the motor is built in, and the motor rotation shaft extends from the motor accommodating chamber.

By adopting such a structure, the motor housing chamber is formed in the range hood and the motor is built therein. Therefore, the motor can be efficiently housed by using the range hood, and the ventilation passage is provided. The motor does not block it.

A ventilation fan according to a third aspect of the present invention is characterized in that, in the first aspect, the ventilation fan main body is arranged in a duct.
While attaching the motor to the outside of the duct,
The point is that the motor rotating shaft is extended in the duct.

By adopting such a configuration, by disposing the motor on the outside of the duct, only the connecting shaft extends in the ventilation passage in the duct, which obstructs the air flow in the ventilation passage. Evoking is performed efficiently without doing.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an example of an embodiment of a ventilation fan according to the present invention will be described with reference to the drawings.

FIG. 1 shows a ventilation fan 1a according to a first embodiment of the present invention. The first embodiment is a ventilation fan with a range hood 1a, which is composed of a ventilation fan body 2 and a range hood 3, and a ventilation fan mounting hole 4 for mounting the ventilation fan body 2 is formed on the back surface of the range hood 3. ing.

The range hood 3 has a built-in motor 5, and the range hood 3 has a concave accommodating portion 6 formed at the center of the front surface thereof. The convex accommodating lid 7 which is attached by a bolt (not shown) is attached. A motor accommodating chamber 8 is formed by the concave accommodating portion 6 and the convex accommodating lid 7, and the motor 5 is accommodated separately from a ventilation passage for oily smoke or the like. Further, a through hole 10 through which the motor rotation shaft 9 penetrates is formed on the bottom surface of the concave accommodation portion 6.

On the other hand, the ventilation fan main body 2 has a substantially quadrangular main body frame 12, and a blower fan 13 is axially supported by a shaft support frame 14 at a substantially central position of the main body frame 12. The shaft support frame 14 is formed, for example, in a substantially cross shape, is fixed to the front surface side and the back surface side of the main body frame 12, and has a ball bearing 15 at the center portion of the cross shape to rotate the fan rotation shaft 16. It is designed to support freely. Also, the main body frame 1
On the back side of the shutter 2, a shutter portion 17 that shuts off the indoors and outdoors is attached so as to be openable and closable.

Further, the motor rotating shaft 9 of the motor 5 and the fan rotating shaft 16 of the blower fan 13 are connected to each other by the connecting shaft 1
8 are connected to each other, and the power of the motor 5 is transmitted to the blower fan 13 for rotation. The connecting shaft 18 is detachably connected. For example, as shown in FIG. 1, a connecting ring 19 is attached to the free end of the motor rotating shaft 9 and the front free end of the fan rotating shaft 16. Connection hooks 20 that engage with the connection rings 19 are attached to both ends of the connection shaft 18. The connecting shaft 18 can be easily attached and detached by engaging and disengaging the connecting hooks 20 from the connecting rings 19. The material of the connecting shaft 18 is not particularly limited as long as the power of the motor 5 can be transmitted, and a metal rod, a rubber rod, a metal coil coated with vinyl, or the like can be used.
Various applications are possible.

The motor 5 built in the range hood 3 is connected to a power source operation switch and a power source operation string which are not shown, and the power source of the motor 5 is turned on and off by operating them. There is.

When the ventilation fan 1a of this embodiment is attached, an opening for attaching the ventilation fan 1a is formed in the wall surface 22 in the room, and the attachment frame 23 is formed in the opening.
Is attached. The range hood 3 is fixed to the wall surface 22 by aligning the ventilation fan mounting hole 4 with the mounting frame 23. Subsequently, the ventilation fan main body 2 is fitted into the mounting frame 23 through the ventilation fan mounting hole 4 and is detachably screwed to the wall surface 22. Then, the connecting shaft 18 is connected to the motor rotating shaft 9 of the motor 5 and the fan rotating shaft 16 of the blower fan 13.

The operation of the ventilation fan 1a according to the first embodiment will be described. When the power of the motor 5 is input by the power input operation by the user, the motor 5 starts driving and the motor rotating shaft 9 rotates. To do. This motor rotating shaft 9
Is transmitted to the fan rotating shaft 16 by the connecting shaft 18, and the blower fan 13 starts rotating. By the rotation of the blower fan 13, a flow of air is created, and oil smoke or the like is discharged from the opening of the range hood 3 to the outside of the room. The shutter section 17 is designed to be opened in association with the power operation. Further, when the maintenance of the motor 5 is performed, the convex housing lid 7 may be opened and the motor 5 may be removed.

Therefore, according to the ventilating fan 1a with a range hood of the first embodiment, the motor 5 is connected to the range hood 3.
Since the motor 5 is housed in the motor housing chamber 8 and is isolated from the ventilation path through which oil smoke and the like pass, the motor 5 is not contaminated with oil dust, and it is not necessary to replace the expensive motor 5 with dirt. Then, the connecting shaft 18 and the ventilation fan main body 2 are connected to the motor 5
The oil dust can be easily and efficiently removed by separately removing and soaking and washing. Further, when the dirt is extremely attached, only that part needs to be replaced, and it is not necessary to replace the entire ventilation fan including the expensive motor 5.

Further, since the motor 5 is separated from the blower fan 13, the flow of air is not obstructed, the wind power efficiency is improved, and the size of the blower fan 13 can be appropriately reduced. .

Next, a second embodiment of the ventilation fan according to the present invention will be described with reference to FIGS. 2 and 3.

In the second embodiment, the above-mentioned first
Constituent elements that are the same as or equivalent to those of the ventilation fan 1a of the embodiment are given the same reference numerals and will not be described again.

The ventilation fan 1b according to the second embodiment includes a duct 2
The ventilation fan main body 2 is fixed to the ventilation fan arrangement portion 25 inside the duct 24. The motor 5 is fixed to the outer surface of the side surface of the duct 24 facing the ventilation fan main body 2 with bolts 26 and the like. A through hole 10 for extending the motor rotation shaft 9 of the motor 5 is formed on the side surface of the duct 24. Further, a dome-shaped or box-shaped motor housing lid 27 is attached to the outer surface of the duct 24 so as to cover the motor 5. The motor accommodating lid 27 is detachable and is opened during maintenance of the motor 5.

The connecting shaft 18 extends into the duct 24 to detachably connect the motor rotating shaft 9 and the fan rotating shaft 16. The motor 5 is connected to a power switch (not shown).

The ventilation fan 1b of the second embodiment as described above
When the power switch is input by the user, the motor 5 starts driving and rotates the motor rotation shaft 9. This rotation is transmitted by the connecting shaft 18 to rotate the blower fan 13. As a result, a flow of air is generated in the duct 24, and oil smoke, moisture, etc. are discharged to the outside of the room.

Therefore, according to the second embodiment, since the motor 5 is not arranged in the duct 24, the motor 5 does not interfere with the air flow in the ventilation passage and the motor 5 is not contaminated. . Further, as compared with the conventional ventilation fan in which the motor 5 and the blower fan 13 are integrally configured, the motor 5 does not obstruct the flow near the center of the blower fan 13 and wind power efficiency can be improved.

The configurations of the respective embodiments of the present invention are not limited to those described above, but can be modified as appropriate.

For example, in each of the above-described embodiments, the propeller-type blower fan 13 is described as an example of the blower fan 13, but a drum-type centrifugal fan may be applied instead of the propeller-type blower fan 13. A drum-type centrifugal fan is especially effective for ventilation in a highly sealed room.

[0032]

As described above, according to the first aspect of the present invention, the motor is not contaminated with oil dust, and inexpensive parts that easily get dirty can be easily replaced without replacing the expensive motor. Further, since the ventilation fan main body is independent of the motor and is detachable, the exhaust fan main body can be soaked and washed together with the ventilation fan main body to remove all the dirt.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the range hood can be used to efficiently house the motor, and the motor blocks the ventilation passage. Nothing.

According to the invention of claim 3, in addition to the effect of the invention of claim 1, by disposing the motor outside the duct, only the connecting shaft extends in the ventilation passage in the duct. Therefore, the arousal is efficiently performed without disturbing the air flow in the ventilation passage.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a first embodiment of a ventilation fan according to the present invention.

FIG. 2 is a sectional view showing an example of a second embodiment of a ventilation fan according to the present invention.

FIG. 3 is a cross-sectional view showing another example of the second embodiment of the ventilation fan according to the present invention.

FIG. 4 is a perspective view showing a conventional ventilation fan.

FIG. 5 is a sectional view showing a conventional ventilation fan.

[Explanation of symbols]

1a, 1b ventilation fan 2 Ventilation fan body 3 range hood 4 ventilation fan mounting hole 5 motor 6 Concave housing 7 Convex housing lid 8 Motor storage room 9 Motor rotation axis 10 through holes 12 body frame 13 Blower fan 14 axis support frame 15 ball bearings 16 fan rotation axis 17 Shutter section 18 connecting shaft 19 Connection ring 20 connecting hook 22 wall 23 Mounting frame 24 ducts 25 Ventilation fan placement section 26 bolts 27 Motor housing lid 31 Ventilation fan 32 ventilation fan mounting hole 33 Hood body 34 Filter 35 front hood 36 body frame 38 Mounting frame 39 motor 40 blower fan 41 Shutter part 42 Power switch operation string

Claims (3)

[Claims] 1. A ventilation fan for driving a blower fan by the power of a motor to ventilate a room to discharge oil smoke, moisture, etc., the motor being isolated from a ventilation path through which the oil smoke, etc. are housed in a motor housing chamber. , The ventilation fan is pivotally supported by the ventilation fan body, and the ventilation fan body is detachably arranged,
A ventilation fan characterized in that the motor rotation shaft and the fan rotation shaft are connected by a detachable connection shaft. 2. A range hood is provided, the motor housing chamber is formed in the range hood to house the motor, and the motor rotating shaft is extended from the motor housing chamber. The ventilation fan according to claim 1. 3. The ventilation fan main body is arranged in a duct, the motor is attached to the outside of the duct, and a motor rotating shaft is extended in the duct. Ventilation fan.