JPH05103931A - Filter body for ventilation fan - Google Patents

Abstract

PURPOSE:To easily fold a filter body of a ventilation fan into two. CONSTITUTION:A filter body 18 attached to a decorative frame of a ventilation fan consists of an outside frame 19 and a sheet like filter 20, and a supporting crosspiece 21 supporting a sheet like filter 20 is attached to the outside frame 19. Thin parts 22 and 22 are provided at the middle in the vertical direction of left and right side parts 19d and 19e of the outside frame 19, a thin part 23 is provided near the middle in the vertical direction of the supporting crosspiece 21 so that the part 23 is positioned on the straight line A connecting thin parts 22 of the outside frame 19 to each other. When the filter body 18 is stained, it is taken off from a decorative frame of ventilating fan, the filter body 18 is folded into two and discarded. At that time, the outside frame 19 and the supporting crosspiece 21 can easily be broken at the thin parts 22 and the thin part 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter body for a ventilation fan which is detachably attached to a decorative frame provided on the indoor side front surface of the ventilation fan body.

[0002]

2. Description of the Related Art As a ventilation fan with a filter, the present applicant previously applied for Japanese Patent Application No. 3-128143. The structure of this is shown in FIGS. 13 and 14.

In these FIGS. 13 and 14, 1 is a ventilation fan main body, 2 is a decorative frame detachably attached to the indoor front surface of the main body 1, and 3 is detachably attached to the front surface of the decorative frame 2. It is a filter body. The filter body 3 includes a sheet-like filter 5 made of non-woven fabric inside the outer frame 4.
Are integrally formed by insert molding.

A supporting bar 6 for supporting the sheet-shaped filter 5 from the rear side is detachably attached to the outer frame 4 of the filter body 3 so as to be positioned on a diagonal line. The support bar 6 is formed in a circular arc shape that is convex toward the inside of the room, and presses the sheet-like filter 5 so as to project toward the inside of the room to separate the sheet-like filter 5 from the fan 7. Not contact the fan 7.

When a ventilation operation is performed in the ventilation fan having the filter body 3 constructed as described above, oil dust or the like contained in the air discharged outdoors is captured by the sheet filter 5. It is possible to prevent the decorative frame 2 and the fan (not shown) from getting dirty as much as possible, and it is not necessary to clean the cleaning frame so often. Then, as a result of capturing the oil dust or the like, when the sheet-like filter 5 becomes extremely dirty, the filter body 3 is removed from the decorative frame 2 and replaced with a new filter body 3.

[0006]

The used filter body 3 is discarded by discarding it in the trash can. In this case, since the filter body 3 is relatively large, it is bulky if it is thrown into the trash can as it is. Therefore, it is conceivable to fold the filter body 3 in two and discard it, but since the elastic repulsion force of the outer frame 4 and the support bars 6 is strong, it is difficult to fold and a considerable force is required.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a filter body for a ventilation fan that can be easily folded when discarded.

[0008]

A filter body for a ventilating fan of the present invention is a filter body detachably attached to a decorative frame provided on an indoor side front surface of a ventilating fan body, wherein an outer frame and an inner side of the outer frame are provided. A sheet filter provided in
A supporting bar that supports this sheet-shaped filter is provided, and thin wall portions for bending are provided at mutually opposing portions of the outer frame, and the supporting bar is bent so as to be positioned on a straight line connecting the thin wall portions of the outer frame. It is characterized in that a thin portion for use is provided.

[0009]

When the filter body is discarded, the outer frame can be easily broken at the thin portion by applying a force to break the thin portion at the thin portion. Also, if a force is applied to the supporting bar so that the supporting bar is also broken at the thin portion, the supporting bar can be easily broken at the thin portion. Since the thin portion of the outer frame and the thin portion of the supporting bar are located on a straight line, the entire filter body can be folded in two without supporting.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a ventilation fan with a filter for a kitchen will be described below with reference to FIGS.

First, in FIGS. 6 and 7 showing the overall structure of the ventilation fan with a filter, the main body 11 is formed of a metal plate material into a square tubular shape. A fan motor 12 is mounted inside the main body 11 via a mounting frame 13, and a fan 14 is detachably attached to a rotation shaft (not shown) of the fan motor 12. Further, a shutter 15 that is opened by receiving wind pressure is pivotally attached to the outside of the main body 11.

A decorative frame 16 made of plastic is detachably attached to the front surface of the main body 11 on the indoor side by a well-known elastic engaging means, and a bell mouth 17 surrounding the fan 14 is attached to the decorative frame 16. It is integrally formed. The filter body 18 is detachably attached to the front surface of the decorative frame 16.

As shown in FIG. 1, the filter body 18 is composed of a rectangular outer frame 19 and a sheet filter 20 provided inside the outer frame 19. Of these, the outer frame 19 is made of, for example, ABS resin, and the sheet filter 20 is made of, for example, a non-woven fabric made of polypropylene fiber. The outer frame 19 and the sheet filter 20 are integrated, and in the case of this embodiment, the sheet filter 20 is arranged in a molding die (not shown) for molding the outer frame 19. Then, in this state, by injection-injecting a resin into the molding die to mold the outer frame 19, the peripheral portion of the sheet-shaped filter 20 is embedded in the outer frame 19 so that they are integrated. Insert molding is used. An oil reservoir 19a is formed at the lower end of the outer frame 19 to store the oil attached to the sheet-shaped filter 20 when it reaches the outer frame 19.

The filter body 18 for the decorative frame 16
The detachable mounting structure is such that the engaging holes 19b formed on the upper and lower sides of the outer frame 19 are elastically releasably engaged with the protrusions 16a protruding on the upper and lower sides of the decorative frame 16. ..

On the back side of the filter body 18, however, a support bar 21 made of plastic is provided in an inclined shape so as to be located on a diagonal line as shown in FIG. The support bar 21 is formed separately from the filter body 18, and both ends thereof are attached to the outer frame 19. And the support bar 2
As shown in FIG. 6, the space between the two end portions of 1 is bent in an arc shape so as to be convex toward the front inside the room, whereby the supporting bar 21 contacts the sheet filter 20 from the back side. The sheet-shaped filter 20 is pressed so as to project more toward the inside than the outer frame 19. As a result, the sheet filter 2
0 is in a taut state and is separated from the fan 14 to prevent contact with the fan 14.

In the mounting structure of the support bar 21 to the outer frame 19, the mounting holes 21a formed at the upper and lower ends of the support bar 21 are fitted into the protrusions 19c provided on the upper and lower sides of the outer frame 19, respectively. That is.

In the filter body 18 as described above, portions of the outer frame 19 which face each other, for example, the left and right side portions 19
As shown in FIG. 2, in the vertical center of d and 19e,
By providing a V-shaped groove on the back surface side, the thin portion 2
2, 22 are formed. Then, in the portion of the supporting bar 21 that is located on the straight line A that connects both the thin portions 22, 22 of the outer frame 19, that is, in the vertical center of the supporting bar 21,
As shown in FIG. 3, the thin portion 23 is formed by providing a V-shaped groove on the back surface side thereof. The thin portions 22 and 23 are formed so as to be oriented in the left-right direction along the straight line A.

In the ventilation fan with a filter having the above-mentioned structure, when the fan motor 12 is energized to perform ventilation operation, the fan 1
4, the air in the kitchen is sucked into the main body 11 from the bell mouth 17 of the decorative frame 16 through the sheet-shaped filter 20 and then discharged to the outside. At this time, oil dust or the like contained in the discharged air is captured by the sheet filter 20.

If the sheet-shaped filter 20 is used for a long period of time, a large amount of oil dust or the like adheres to the sheet-shaped filter 20, and the ventilation of the sheet-shaped filter 20 deteriorates. In such a case, the filter body 18 is removed from the decorative frame 16 and replaced with a new filter body 18.

The used filter body 18 is folded in two and discarded. As shown in FIG. 4A, one of the left and right side portions 19d and 19e of the outer frame 19 is folded at the thin portion 22, and then the two-fold procedure is performed as shown in FIG. 4B. The support bar 21 is folded at the thin portion 23, and finally, as shown in FIG.
As shown in (c), the other side of the outer frame 19 is attached to the thin portion 22.
Fold it in. When the left and right side portions 19d and 19e of the outer frame 19 are bent, the thin portion 22 on the side surface is pulled and torn. Then, finally, the filter body 18 is folded in two as shown in FIG. 5, and in this state, it is discarded in a trash can or the like.

When the filter body 18 is folded in two, the thin portions 22, 22 and 23 may be folded at the same time to be folded in two at a time.

As described above, according to this embodiment, the left and right side portions 19d and 19e of the outer frame 19 and the support bars 21 are formed with the thin portions 22 and 23, so that the side portions 19d and 19e are formed.
Since the e and the supporting bar 21 can be easily folded and the thin portions 22 and 23 are located on the straight line A, unlike the case where the thin part 23 of the supporting bar 21 is provided at another position. When the sheet filter 20 is folded in two by folding the outer frame 19, the support bar 21 is placed at the same position where the sheet filter 20 is folded in two.
Therefore, the filter body 18 can be easily folded in two.

FIGS. 8 to 12 show other embodiments of the present invention. The same parts as those of the above-mentioned embodiment are designated by the same reference numerals and different parts will be described.

As shown in FIG. 8, the other two corners of the four corners of the outer frame 19 except the corners to which both ends of the supporting bar 21 are attached are as shown in FIG. The thin portions 24, 24 are formed by providing a V-shaped groove on the back surface side thereof. Further, as shown in FIG. 10, a thin-walled portion 25 is also formed in the central portion of the support bar 21 in the vertical direction by providing a V-shaped groove on the back surface side. The thin portions 24, 24 of the outer frame 19 and the thin portion 25 of the supporting bar 21 are located on a straight line, that is, on the diagonal line B of the outer frame 19. The thin portions 24 and 25 are formed so as to be inclined with respect to the horizontal so as to be along the straight line B.

When the used filter body 18 is discarded, as shown in FIG. 11, the two corners of the outer frame 19 to which the both ends of the supporting bar 21 are attached are put into the hands and bent. Then, the outer frame 19 and the supporting bar 21 are simultaneously bent at the thin portions 24 and 25. Therefore, unlike the above-described embodiment, it is not necessary to separately fold the side portions 19d and 19e and the supporting bar 21, and the filter body 18 can be folded in two more easily. Moreover, the filter body 18
Since the corners of the filter are away from the circular bell mouth 17 and do not allow wind to pass therethrough, they are less likely to be soiled with oil dust and the like, and the filter body 18 can be folded in two without soiling the hands so much.

Further, when the filter body 18 is folded in two, the filter body 18 has a triangular shape as shown in FIG. 12, so that when the filter body 18 is thrown into the trash box, it can be easily pushed into the gap of the already discarded waste.

In each of the above embodiments, the supporting bar 21 is formed separately from the outer frame 19, but the supporting bar may be integrally formed with the outer frame.

[0028]

As described above, according to the filter body of the ventilation fan of the present invention, the thin wall portions are provided in the portions of the outer frame which face each other, and the support rails are positioned on the straight line connecting both thin wall portions of the outer frame. Since the thin portion is provided as described above, when the filter body is folded in two and discarded, the folding operation can be easily performed, which is an excellent practical effect.

[Brief description of drawings]

FIG. 1 is a rear view of a filter body showing an embodiment of the present invention.

FIG. 2 is a perspective view of a thin portion of the outer frame.

FIG. 3 is a perspective view of a thin portion of the support bar.

FIG. 4 is a perspective view showing a procedure for folding the filter body in two.

FIG. 5 is a perspective view of a filter body folded in two.

FIG. 6 is an exploded vertical sectional side view showing the entire ventilation fan.

FIG. 7 is a perspective view of the same appearance.

FIG. 8 is a view corresponding to FIG. 1 showing another embodiment of the present invention.

FIG. 9 is a view corresponding to FIG.

FIG. 10 is a view corresponding to FIG.

FIG. 11 is a perspective view showing an operation of folding the filter body in two.

FIG. 12 is a view corresponding to FIG.

FIG. 13 is a perspective view showing an example of another ventilation fan with a filter to be compared with the present invention.

FIG. 14 is a view corresponding to FIG.

[Explanation of symbols]

Reference numeral 11 is a main body, 14 is a fan, 16 is a decorative frame, 18 is a filter body, 19 is an outer frame, 20 is a sheet filter, 21 is a support bar, and 22 to 25 are thin portions.

Claims (1)

[Claims] 1. A filter body detachably attached to a decorative frame provided on the indoor front surface of a ventilation fan main body, an outer frame, a sheet filter provided inside the outer frame, and the sheet filter. And a thin wall for bending is provided at a portion of the outer frame facing each other, and the thin wall for bending is positioned on the straight line connecting the thin portions of the outer frame to the supporting rail. A filter body for a ventilation fan, characterized by being provided with.