JP3133535B2 - Ventilation fan with filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan with a filter provided with a filter body provided with an oil receiving portion for storing oil collected by a sheet-like filter stretched so as to be curved forward. About.

[0002]

2. Description of the Related Art Conventionally, a ventilating fan with a filter has been provided with a filter body in which a sheet-like filter is stretched forward (inside of a room) on the front side of a ventilating fan body. This is to prevent the sheet filter from warping due to the suction force of the fan or to improve the design.

FIG. 6 shows an example of this type of filter body. That is, a sheet-shaped filter 2 is integrally formed with the filter frame 1, and a curved support bar 3 is mounted diagonally on the rear side of the filter frame 1. Thereby, the sheet filter 2 is stretched by the support bar 3 so as to bend forward.

[0004] An oil receiving portion 4 is integrally formed at the lower end of the front surface of the filter frame 1. Therefore, the oil collected and accumulated on the front surface of the sheet filter 2 flows down the sheet filter 2 and is stored in the oil receiving section 4.

[0005]

However, in the case of the above-mentioned conventional structure, the foremost position of the sheet filter 2 stretched so as to be bent forward is the front end face of the oil receiving portion 4 provided on the filter frame 1. If the oil collected on the front surface of the sheet filter 2 falls directly due to the vibration of a shutter that closes when the operation is stopped, for example, the oil is received by the oil receiving portion 4. Without dropping directly onto the floor, and the floor is contaminated with oil.

Further, since the lower part of the support bar 3 on which the sheet filter 2 is stretched from the rear surface is attached to the rear surface of the filter frame 1, the oil flowing down the support bar 3 and flowing down is stored in the oil receiving portion 4. Instead, it falls from the lower end of the filter frame 1 and soils the floor in the room. In this case, it is conceivable to separately provide an oil receiving portion for receiving the oil flowing down along the support bar 3 on the rear surface side of the filter frame 1. However, in such a configuration, the oil receiving portion located on the rear surface side of the filter frame 1 may be provided. It is hard to see because it is blocked by the filter frame 1. Therefore, when replacing the filter, forget the oil receiving portion located on the rear side of the filter frame 1,
There is a risk that the filter frame 1 may be inadvertently tilted and the oil stored in the oil receiving portion located on the rear surface side may run down.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a filter body having an oil receiving portion for receiving oil flowing down a sheet-like filter which is stretched so as to curve forward. It is another object of the present invention to provide a ventilation fan with a filter capable of reliably collecting oil collected by a filter body at an oil receiving portion.

[0008]

According to the present invention, there is provided a decorative frame provided on a front surface of a ventilation fan main body, which is removably mounted on the decorative frame, and a central portion of the front surface is located on the indoor side from a lower end portion.
A filter having a sheet-like filter is stretched so as to curve forward by Uni support rail, provided on one <br/> body as from the front side oil storage state viewable on the front lower end of the filter body In a ventilation fan with a filter provided with an oil receiving portion provided, the oil receiving portion is formed in a shape such that a front end portion protrudes forward from a foremost position of the filter body. Further, the filter body may be configured to have an oil retaining portion that receives the lower portion of the support bar located on the rear surface of the sheet filter and communicates with the oil receiving portion.

[0009]

According to the ventilation fan with the filter according to the first aspect, when oil is collected and accumulated in the sheet-shaped filter by the operation of the ventilation fan, the oil flows down the filter body and is provided at the lower end of the front surface of the filter body. It is stored in the oil receiving section.

When, for example, vibration is applied to the filter body, the oil adhering to the front surface of the filter body may fall directly. At this time, since the front end portion of the oil receiving portion projects forward from the foremost position of the filter body, even if the oil falls directly from the filter body, the oil can be received by the oil receiving portion.

According to the ventilating fan with the filter according to the second aspect, when the oil collected by the filter body flows down the support bar supporting the sheet-shaped filter from the rear surface, the oil is transferred to the oil stop portion which receives the lower portion of the support bar. After being received, it flows down to the oil receiving section and flows down. This allows the oil receiving portion to receive the oil flowing down the rear surface of the filter body.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 4 shows an exploded perspective view of the ventilation fan. In FIG. 4, a fan motor 13 is disposed in a frame 12 constituting the ventilation fan main body 11, and a shutter 14 is provided in a rear opening. A power cable 15 derived from the fan motor 13 has a switch 16 mounted on the front surface of the frame 12 interposed therebetween. The switch 16 is provided with a drawstring 17, and the power supply cable 15 is provided as the drawstring 17 is pulled.
Are alternately switched between a conductive state and a disconnected state, and the shutter 14 is alternately switched between an open state and a closed state accordingly.

An outlet mounting plate 1 is provided at a corner in the frame 11.
The plug 20 of the power cable 15 is connected to an outlet 19 mounted on the outlet mounting plate 18. In addition, the indoor wiring is connected to the outlet 19 from the back side.

A decorative frame 22 having a rectifying orifice 21 is detachably mounted on the front surface of the ventilation fan main body 11. A fan 23 is mounted on the shaft of the fan motor 13 by a button 23a.

A filter body 24 is detachably mounted on the decorative frame 22. This filter body 24
As shown in FIG. 3, is integrally formed so that the periphery of a sheet-like filter 25 made of a non-woven fabric is surrounded by a filter frame 26 and the front and rear surfaces are held by support bars 27. Here, the support bar 27 holding the front and rear surfaces of the sheet filter 25 is formed so as to be curved forward (inside the room), whereby the sheet filter 25 is moved forward.
Support bar 2 so that the central part of the
It is stretched so as to bend forward by 7 . Also,
An oil receiving portion 28 is formed integrally with the lower end of the front surface of the filter frame 26. This oil receiving portion 28 is
It is located on the front side, and the storage state of the oil receiving portion 28 is
The state is visible.

FIG. 1 shows a cross section of the vital body 24. In FIG. 1, the oil receiving portion 28 is formed in a U-shaped cross section. In this case, the front end portion 28a of the oil receiving portion 28 is supported by the support bar 27 which is in contact with the front surface of the sheet filter 25.
Is formed so as to protrude forward from the foremost position of. That is, assuming that the thickness of the support bar 27 located on the front surface of the sheet filter 25 up to the foremost position is a and the thickness of the oil receiving portion 28 up to the front end surface 28a is b, b> a. Are set with dimensions a and b. A locking portion 29 having a locking hole 29a is formed on the rear surface of the oil receiving portion 28 so as to protrude.

FIG. 2 shows an enlarged cross section of the oil receiving portion 28. In FIG. 2, a rib 30 serving as an oil stopper is formed integrally with the upper end of the rear end surface of the oil receiving portion 28. In this case, the rib 30 is formed so as to be inclined such that the connection portion with the oil receiving portion 28 is the lowest. In addition, the sheet-like filter 25 and the support bar 27 holding the front and rear surfaces thereof are
It is integrally formed so as to be connected to the upper surface of the rib 30.

Next, the operation of the above configuration will be described. When the drawstring 17 is pulled, the fan motor 13 is operated at the same time as the shutter 14 is opened, and the air in the room is exhausted through the sheet-like filter 25. At this time,
The oil contained in the air is collected by the sheet filter 25.

When the operation of the ventilation fan continues for a long time, the oil collected by the sheet filter 25 accumulates and flows down along the front face of the sheet filter 25 and the support bar 27 contacting the front face. Then, the sheet filter 2
The oil that has flowed down the front side of the filter frame 5 is stored in an oil receiving portion 28 provided at the lower end of the front surface of the filter frame 12.

When the pull cord 17 is pulled to end the operation of the ventilation fan, the shutter 14 closes at the same time when the fan motor 13 stops. At this time, the shutter 14
, The ventilation fan main body 11 vibrates, and accordingly, the filter body 24 attached to the decorative frame 22 vibrates.

When the filter body 24 vibrates as described above, the oil that flows down the front surface of the sheet-like filter 25 or the support bar 27 that is in contact with the front surface may drop directly. At this time, the front end surface portion 28a of the oil receiving portion 28 provided at the lower front end portion of the filter body 24 is located forward of the foremost position of the filter body 24.
Oil dropped directly from the front side of the sheet filter 25 is received by the oil receiving portion 28 and stored therein. Accordingly, unlike the conventional example in which the front end surface of the oil receiving portion is located rearward of the frontmost position of the sheet filter stretched so as to be bent forward, the oil receiving portion flows down along the front side of the sheet filter 25. The oil can be reliably collected in the oil receiving section 28.

On the other hand, when the amount of oil collected by the sheet filter 25 increases, the oil flows down the rear surface of the sheet filter 25 and the support bar 27 which is in contact with the rear surface. At this time, the lower portions of the sheet-like filter 25 and the support bar 27 are connected to the rib 30 and the rib 30
Since the oil is inclined toward the oil receiving portion 28, the oil that has flowed down the rear surface of the sheet filter 25 is received by the ribs 30 and then passes through the sheet filter 25 and transmitted to the oil receiving portion 28. It flows down and is stored here. Therefore, unlike the conventional example in which the support bar is attached to the rear surface of the frame of the filter body, the oil flowing down the rear surface side of the sheet-like filter 25 can be reliably collected by the oil receiving portion 28.

Further, according to the above embodiment, since the oil receiving portion 28 is provided only at the lower end of the front surface of the filter frame 26, the oil flowing down the rear surface of the sheet filter 25 on the rear surface of the filter frame 26 is prevented. Unlike the configuration in which an oil receiving portion for receiving the oil is separately provided, when the filter body 24 is replaced, the filter body 24 is removed from the decorative frame 22 without spilling the oil stored in the oil receiving portion 28 by mistake. Can be removed.

FIG. 5 shows an enlarged cross section of an oil receiving portion 28 according to a second embodiment of the present invention. The same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different portions will be described. explain. That is, the rib 31 serving as an oil stopper connected to the upper end of the rear end surface of the oil receiving portion 28 is formed horizontally horizontally toward the rear, and has a good 31a bent upward at the rear end. ing.

In the case of the second embodiment, the oil that has flowed down along the sheet filter 25 and the support bar 27 is received by the rib 31. When a certain amount of oil accumulates in the ribs 31, the oil passes through the sheet-like filter 25 and passes through the oil receiving portion 2.
8, the oil collected by the sheet filter 25 can be reliably collected by the oil receiving section 28, as in the first embodiment.

The shape of the rib connected to the oil receiving portion 28 may be any shape as long as it has a structure that receives the oil that has flowed down the sheet filter 25 and the support bar 27 and sends it to the oil receiving portion 28. Can be formed.

[0027]

As is apparent from the above description, according to the ventilation fan with filter according to the first aspect, the central portion of the front surface is lower.
A bay is supported by a support bar so that it is located on the indoor side from the end.
A filter having a sheet-like filter stretched to be bent
Oil storage status is visible from the front side at the lower front part of the ruta body
As described above, in the configuration in which the oil receiving portion is provided integrally, the oil receiving portion is formed to have a shape in which the front end face portion protrudes forward from the foremost position of the filter body , so that the oil receiving portion is stretched so as to be curved forward. In the case where the oil receiving portion for receiving the oil flowing down the sheet filter is provided in the filter body, an excellent effect that the oil flowing down the front surface side of the filter body can be reliably collected in the oil receiving portion is exhibited.

According to a second aspect of the present invention, the filter body has an oil stop portion configured to receive the lower portion of the support bar located on the rear surface of the sheet filter and communicate with the oil receiving portion. With this configuration, it is possible to reliably collect the oil flowing down the rear surface of the filter body at the oil receiving portion while exhibiting the same effect as the ventilation fan with the filter according to the first aspect.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a filter body showing a first embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of a lower end portion of the filter body.

FIG. 3 is a front view and a side view of a filter body.

FIG. 4 is an exploded perspective view of a ventilation fan.

FIG. 5 is a view corresponding to FIG. 2 showing a second embodiment of the present invention;

FIG. 6 is a diagram corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

11 is a ventilation fan main body, 22 is a decorative frame, 24 is a filter body,
25 is a sheet filter, 28 is an oil receiving part, 28a is a front end face part, and 30 and 31 are ribs (oil stopping parts).

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 7/013 101 B01D 46/10

Claims (2)

(57) [Claims] And 1. A decorative frame disposed on the front of the ventilating fan body, this decorative frame detachably mounted, the central portion of the front surface
A filter body having a sheet-like filter stretched so as to be curved forward by a support bar so as to be located on the indoor side from the lower end , and a front lower end portion of the filter body from the front side.
In a ventilation fan with a filter having an oil receiving portion provided integrally so that the oil storage state can be visually recognized , the oil receiving portion is formed in a shape in which a front end portion protrudes forward from a foremost position of the filter body. A ventilating fan with a filter, characterized in that: 2. The filter body according to claim 1, wherein the filter body has an oil retaining portion having a shape for receiving a lower portion of the support bar located on the rear surface of the sheet filter and communicating with the oil receiving portion. The ventilation fan with a filter according to 1.