JPH02208431A - Ventilation fan - Google Patents

Abstract

PURPOSE:To reduce the number of pipe holding containers which are integral with a filter and increase a collecting area by a method wherein the filter is formed with some bent portions spaced apart at a substantial same distance, a holding groove part, a rear surface supporting part, and an oil receiving part holding the filter between it and the supporting part are provided. CONSTITUTION:A filter member 2 installed at a filter mount frame 6 is formed with a longitudinal hole. The filter is comprised of a mount frame 6 formed with bent portions 15 at both sides of the longitudinal hole and a filter material 17 arranged in the longitudinal hole of the mount frame 6. The filter member 2 is made such that bent portions 15 are made different to each other for their being bent directions in order to be extended or retracted into a bellows form. An upper part of the mount frame 6 is formed with a holding groove 20 for use in inserting and holding an upper part of the filter member 2. The groove 20 is formed at its rear inner portion with a zig-zag formed supporting surface 21 for supporting the filter surface 2 in its opened state. The front and inner surface of the groove 20 becomes a pressing and holding surface 22 for holding the bent part 19 of the filter member 2. The lower part of the mount frame 6 is provided with a bearing 25. The bearing 25 causes a resilient engagement piece 26 to be engaged with an engagement hole of the mount frame 6 and further causes it to be engaged or disengaged.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a ventilation fan equipped with a filter body.

(b) Prior art As a technology prior to the present invention, Utility Model Application No. 61-175828
There is a ventilation fan described in the publication. The ventilation fan is a ventilation fan equipped with a panel with a ventilation passage formed on the front side of the ventilation fan main body, and a filter having a filter frame and detachably attached to the panel, in which the filter frame has one or more thin-walled parts sandwiched therein. A clamping portion corresponding to the thin portion is provided.

The filter can be bent along with the filter frame at the thin wall part, but when attached to the panel of the ventilation groove body, it is installed so that it is flat, and the filter frame part does not have the ability to collect oil smoke. Therefore, the filter area becomes smaller, the amount of oil smoke collected is smaller, and the air volume is reduced.
The ventilation resistance also increases.

(c) Problems to be Solved by the Invention The present invention aims at reducing the storage volume of a replacement filter body, increasing the collection area of the filter body, and making it easy to attach and detach the filter body to a ventilation fan. This is a major issue.

(d) Means for Solving the Problems The present invention provides a ventilation fan in which an electric motor and a blower blade are housed inside and an intake port is covered with a filter body, and the filter body has bent portions formed at approximately the same intervals. A holding groove for opening and holding the filter body in a bellows-like manner is formed in the front upper part of the main body where the intake port is formed, a rear support part for the filter body is formed in the front lower part of the main body, and a filter body is formed in the front lower part of the main body. This problem is solved by installing an oil receiver that holds the oil between the oil container and the support part.

(E) Function According to the present invention, the filter body can be folded at the bending portion. By holding the filter body open in a bellows-like manner instead of opening it completely to a flat surface, a large dust collection area can be obtained within a small projected area.

(f) Example Fig. 1 is an exploded perspective view of the ventilation fan 1 of the present invention, with a part cut away, Fig. 2 is a partially cutaway right side view, and Fig. 3 shows the filter body 2 attached to the main body 3 of the ventilation fan 1. FIG. 3 is a cross-sectional plan view opened to the extent that it can be worn.

The ventilation fan main body 3 includes a rectangular cylindrical mounting frame 4 formed by bending and joining sheet metal, a front cover integral 5 that engages and detaches from a collar piece stretched over one end of the mounting frame 4, and the front cover 5. It consists of a filter mounting frame 6 that can be engaged and detached. The front cover unit 5 and the filter mounting frame 6 may be formed of synthetic resin or sheet metal.

The integrated front cover 5 and the filter mounting frame 6 may be formed integrally, or may be formed integrally with the mounting frame 4. A support frame is constructed within the mounting frame 4, and a support frame is provided on the support frame. Equipped with an electric motor. A blower blade 7 is attached to the rotating shaft of the electric motor using a spinner. A wind tunnel surrounding the blowing blades 7 is formed in the front cover integral 5.

The filter mounting frame 6 has an upper locking hole 8 connected to the front cover integrally 5.
By engaging the upper hooking piece 9 and engaging the elastic claw piece protruding from the rear surface of the lower part into the engagement hole 1o at the lower part of the front cover unit 5,
It is detachably attached to the front cover unit 5. A rib 11 is formed around the front cover integral 5, and 1.
The filter mounting frame 6 and the front cover unit 5 are integrated and airtight by covering the lip 1.

The filter body 2 attached to the filter mounting frame 6 includes a filter frame 16 that has a vertically long hole and a thin bent portion 15 formed on both sides of the vertically long hole, and a filter that is disposed in the vertically long hole of the filter frame 16. It consists of material 17. The filter material 17 is formed of wire mesh, lath board, cloth, nonwoven fabric, synthetic resin net, or the like. The filter material 17 is glued to the filter frame 16,
Can be integrated by welding, molding, etc. In order to expand and contract the filter body 2 into a bellows shape, the bending portions 15 are alternately bent in different directions. Locking protrusions 18 formed on both sides of the filter mounting frame 6 are provided on both sides of the filter frame 160.
A retaining hole 19 is formed into which the retaining hole 19 is inserted and engaged. Note that the locking protrusion 18 may be formed on the filter frame 16 and the engagement hole 19 may be formed on the filter mounting frame 6. The locking protrusion 18 may have a shape that bends outward, or may be a sturdy pin body.

A holding groove 20 into which the upper part of the filter body 2 is inserted and held is formed in the upper part of the filter mounting frame 6. A zigzag support surface 21 is formed on the rear inner surface of the holding groove 20 to support the filter body 2 in an open state, as shown in FIG.
It serves as a presser holding surface 22 that holds the presser foot with the supporting surface 21. Since the upper part of the filter body 2 is inserted obliquely into the holding groove 20, it will be held with some clearance, but there is no problem with it coming off.

At the bottom of the filter mounting frame 6, there are formed a zigzag support part 23 that opens and supports the lower part of the filter body 2 in a bellows shape, and a collar piece 24 that supports the lower end of the filter body 2. Insert the upper part of the filter body 2 into the holding groove 20,
The filter can be attached to the filter mounting frame 6 by hooking the engaging holes 19 on both sides to the locking protrusions 18, placing the lower end of the filter body on the collar piece 24, and bringing it into contact with the support portion 23.

An oil receiver 25 is attached to the lower part of the filter mounting frame 6.

The oil receiver 25 can be engaged and detached by engaging the elastic locking piece 26 with the engagement hole of the filter mounting frame 6. The oil receiver 25 is the collar piece 2
The front wall is positioned so as to receive the lower part of the filter body 2, and the front wall extends upward to receive the lower front and side cover pieces 2 of the filter body 2.
7 is formed. The lower part of the filter body 2 is held between the cover piece 27 and the support part 23, so that attachment to the filter attachment frame 6 is ensured.

The oil collected by the filter body 2 and flowing down is guided to the oil receiver 25 and collected because the lower part of the filter body 2 is held between the support part 23 and the piece 27 of the oil receiver 25. . In order to replace or clean the filter body 2, the oil receiver 25 must be removed, so that the oil receiver 25 can be cleaned without forgetting.

(g) Effects of the invention The present invention allows the filter body to be folded at the bending portion, so that
It requires less storage space and is easier to take home for sale.

By holding the filter body open in a bellows shape, the collection area of the filter body becomes large and ventilation resistance is small.The triangular space formed by the bellows traps air, increasing the collection efficiency of the filter body. Improve more.

By holding the filter body using the oil receiver, there is no need for a special holding member, and the oil receiver can be cleaned at the same time as the filter body.

[Brief explanation of the drawing]

The drawings illustrate the present invention; FIG. 1 is an exploded perspective view, FIG. 2 is a partially cutaway side view, and FIG. 3 is a sectional view of a filter body. 1...Ventilation fan, 2...Filter body, 3...Main body, 6...Filter mounting frame, 7...Blower blade, 15
...Bending part, 16... Filter frame, 17... Filter material, 20... Holding groove part, 23... Supporting part,
25... Oil receiver, 27... Cover piece.

Claims (1)

[Claims] 1. In a ventilation fan that has an electric motor and blower blades inside and covers the intake port with a filter body, the filter body has bent portions formed at approximately the same intervals, and the front upper part of the main body where the intake port is formed has bent parts. ,
A holding groove is formed to open and hold the filter body in a bellows shape, a rear support part for the filter body is formed at the front lower part of the main body, and an oil receiver is formed at the front lower part of the main body to sandwich the filter body between the support part. A ventilation fan equipped with