JPH10132352A - Filter mounting structure for exhausting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount a filter excellent in capturing capability of oil for an exhausting apparatus having a filter of a different type and for an exhausting apparatus not including a filter. SOLUTION: There is provided a filter mounting structure for an exhausting apparatus not including a filter in which a filter support frame 3 is fixed to an upstream side of a suction hole in the exhausting apparatus on the filter support frame 3 at a predetermined interval, and a flat plate shaped part located between the slits is vertically formed to removably mount the filter 4 in which a ventilating hole is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan or a flat type range installed at a position above a stove in a kitchen and used for local exhaust for sucking and exhausting oil smoke, combustion waste gas, steam, odor, etc. generated by cooking. The present invention relates to a structure for attaching a filter to a hood.

[0002]

2. Description of the Related Art Exhaust devices used for local exhaust include a ventilation fan, a flat type range hood, a vertical type (boot type) range hood, and the like.
Some of these exhaust devices do not have a filter. In particular, in some ventilation fans and flat type range hoods that have been installed quite a while ago, the suction mouth (bell mouth) is exposed, and the propeller fan housed inside the case can be seen through the suction mouth. In addition, even if a filter is equipped, there are various types of filters such as punched metal or expanded metal having a small hole in a thin metal plate, and disposable glass wool and polyester mat, which are included in oil smoke. The removal efficiency of the fats and oils is not so high. As a filter excellent in the efficiency of removing fats and oils, the present applicant has developed and has already proposed a filter (Japanese Utility Model Application Publication No. 2-43).
No. 456). In the filter, slits are vertically provided at predetermined intervals in a thin metal plate, and a flat portion between the slits is cut and raised in one direction to open a vent.

[0003]

By the way, the eating habits of today include many dishes using oil, and as a result, a lot of oil smoke is generated. However, as described above, there are few exhaust devices equipped with a filter having an excellent performance of capturing fats and oils, and the fact is that a filter having a low capturing performance is used with patience. Of course, in the case of a ventilation fan or a flat type range hood to which no filter is attached, since oil smoke is sucked and exhausted as it is, there is a problem in that the area around the exhaust port of the exhaust device is very dirty with oil and fat, and cleaning is difficult.

[0004] Also, in an exhaust device equipped with a filter, the size of the installed filter differs in length, width and the like depending on the manufacturer, and it is not possible to replace only the filter with the intended filter. General.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an exhaust system having no filter and an exhaust system having a filter of a different form in capturing oil and fat. An excellent filter is provided.

[0006]

In order to achieve the above object, a filter mounting structure according to the present invention is a filter mounting structure for an exhaust device having no filter or a filter having a different form, and The filter support frame is fixed to the upstream side of the suction port in the above, a slit is vertically provided at a predetermined interval in a thin metal plate in the filter support frame, and a flat plate portion between the slits is cut and raised in one direction to ventilate. The filter having an open mouth is detachably mounted.

The above-mentioned filter and filter supporting frame may be formed of a thin metal plate used today such as a stainless steel plate or a corrosion-resistant aluminum plate. It is possible to obtain a filter and a filter supporting frame which are easy to remove stains and have excellent wear resistance. When the filter support frame is made of a thin metal sheet of a fluororesin laminate,
Since welding cannot be performed, the frame is formed by two-piece drawing or riveting. The cut-and-raised portion of the filter may be formed in a row on the flat portion, or may be formed by diagonally dividing the flat portion and forming the cut surface along the rotation direction of the fan.

[0008] When the exhaust device is a ventilation fan, the filter support frame is formed one or two times larger so as to cover the decorative frame of the ventilation fan, and the filter support frame is formed so as to cover the decorative frame of the ventilation fan. Then, the upper part of the filter support frame is fixed to the wooden frame to which the ventilation fan is fitted and fixed by screwing. When the exhaust device is a flat range hood, a nut member is fixed to a lower plate of the range hood having an inlet, and a filter support frame is sandwiched and supported by the nut member with a bolt member.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show a structure for attaching a filter to a ventilation fan. In the ventilation fan 1, a motor 1b is fixed inside a rectangular tubular frame 1a, and a propeller fan 1c is fixed to a rotating shaft of the motor 1b. At the same time, a shutter 1d that can be opened and closed freely on the discharge side of the rectangular cylindrical frame 1a.
And a decorative frame 1e having a bell mouth attached to the suction side of the rectangular tubular frame 1a. To attach the ventilation fan 1 to a wall or the like, a wooden frame or an insulating frame 2b is fitted into a mounting hole 2a opened in the wall 2, and a rectangular cylindrical frame 1a is fitted into the wooden frame or the insulating frame 2b. Fixed and fixed.

Therefore, the structure in which the filter 4 is attached to the ventilation fan 1 attached as described above is a filter supporting frame 3 configured to detachably support the filter.
Is fixed to the wooden frame or the insulating frame 2b with screws 5. The filter supporting frame 3 is made of a thin metal plate, and is higher than the height of the decorative frame 1e in the ventilation fan 1 and several times larger than the decorative frame 1e. A front support piece 3b protruding inward at the upper and lower sides of the peripheral frame 3a, flush with the front face thereof, and a rear support piece 3c protruding inward on the inner surfaces of the left, right, and lower sides. An elastic member leaf spring 3d is mounted on the inner side of the upper side, and the rear support piece 3c defines a space in which the filter 4 can be sandwiched and supported by the front support piece 3b. At the rear end of the upper side of the peripheral frame 3a, a mounting piece 3f having a mounting hole 3e for screwing and fixing the filter support frame 3 to the wooden frame or the insulating frame 2b is formed so as to project upward at right angles. . Note that a plurality of parts constituting the filter support frame 3 are assembled by welding or the like. Further, when a plate material in which a fluororesin film is laminated on the surface of a thin metal plate is used as a material constituting the filter support frame, welding cannot be performed, so that a plurality of parts are connected to each other by two-piece drawing or riveting. Since the ventilation fan is vertically mounted, the filter support frame 3 attached to the ventilation fan is also mounted vertically, so that the filter 4 mounted on the filter support frame 3 has a weight in the direction of the center of gravity. Since it works, it can be used without the above-mentioned leaf spring 3d.

The filter 4 detachably mounted on the filter support frame 3 is formed by forming a thin metal plate, such as a corrosion-resistant aluminum plate or a stainless steel plate, which is currently used as a forming material, into a flat square shape. A direction in which each of the surfaces which are bulged in the shape of a quadrangular pyramid and which has a substantially isosceles triangle on the front thereof intersects at right angles with one side of the square (inflow direction of air sucked in with rotation of the propeller fan 1c) In addition, a plurality of rows of eight slits are formed in a block at predetermined intervals in the width direction, and a number of blocks are vertically provided toward the apex of each surface, and the plane portions of the slits in each block are aligned with one another. A vent 4b is opened by cutting and raising 4a on the side (back side), and a reinforcing edge 4c higher than the height of the cutting and raising piece 4a is formed on the outer periphery at a right angle toward the back. It is formed in a shallow box shape. The direction of the cut-and-raised portions 4a formed on the four diagonally divided surfaces is refracted and inclined along the filter passage direction of the air sucked with the rotation of the propeller fan 1c. At the center of the lower edge of the filter 4, a knob 4d used for mounting the filter 4 on the filter support frame 3 is attached. Furthermore, if the filter 4 is formed of a plate material obtained by laminating a fluororesin film on the surface of a thin metal plate, a filter having excellent cleaning properties can be provided.

As shown in FIG. 6A, the filter 4 is mounted on the filter supporting frame 3 first.
Is inserted into the receiving portion of the filter support frame 3 to which the upper leaf spring 3d is attached, and then the lower part of the filter 4 is compressed by compressing the leaf spring 3d at the upper side of the filter 4 as shown in FIG. When the filter support frame 3 is fitted into the receiving portion beyond the front support piece 3b and the compression of the leaf spring 3d is released, the filter 4 is pushed down by the elastic force of the leaf spring 3d, and the lower side of the filter 4 is The support frame 3 is fitted and held between a front support piece 3b and a rear support piece 3c. When removing the filter 4 from the filter support frame 3, the operation described above may be reversed.

FIGS. 7 to 11 show a filter mounting structure for a flat range hood. The flat range hood 6 houses a propeller fan 6b driven by a motor in a hood body 6a having an open lower surface. The lower surface opening of the hood body 6a is of a well-known type closed by a lower plate 6c having an inlet 6d, and a connection port for an exhaust duct is formed on the back or left and right side surfaces of the hood body 6a. Have been. The flat range hood 6 constructed as described above is mounted horizontally on the ceiling surface with the suction port 6d facing a gas stove or the like. The fan mounted on the flat range hood 6 is not limited to the illustrated propeller fan, but may be a turbo fan, a sirocco fan, or the like. Therefore, in the structure for mounting the filter 8 on the flat range hood 6, the filter supporting frame 7 configured to detachably support the filter 8 can be detachably attached to the lower surface of the lower plate 6c with the thumb screw 9. Fixed to.

The filter support frame 7 is made of a thin metal plate and has a lower plate 6c, like the filter support frame 3 shown in the above embodiment.
A peripheral frame 7a, which is formed in a substantially rectangular plane and has a size that surrounds the suction port 6d formed therein, and a front support piece 7b and a rear support piece 7c projecting inward from the inner surface of the peripheral frame 7a; A peripheral spring 7d attached to the inner side of the upper side of the peripheral frame 7a. The thickness of the peripheral frame 7a is larger than the thickness of the filter 8 mounted on the filter support frame 7 (about three times).
The front support piece 7b and the rear support piece 7c are formed closer to the front side with respect to the peripheral frame 7a, so that the surface of the filter 8 and the lower plate 6c of the range hood 6 mounted on the support frame 7 A gap is formed between them. In the filter support frame 7 formed as described above, an L-shaped mounting piece 7f having an elongated hole 7e for screwing is screwed and fixed at a middle position on the left and right sides of the peripheral frame in the filter supporting frame 7. 7f is screwed to the lower surface of the range hood 6 with a thumb screw 9 to attach the filter support frame 7.

A nut member 10 into which the above-mentioned thumb screw 9 is screwed.
Is fixed to the lower plate 6c by using a pop nut (caulking nut) 10 made of aluminum or mild steel as shown in FIG. 10 and using a special jig for a mounting hole 6e drilled in the lower plate 6c. It is fixed by caulking.

The filter 8 removably mounted on the filter support frame 7 is made of a thin metal plate used today as a molding material, such as a corrosion-resistant aluminum plate or a stainless steel plate, as shown in the above-described embodiment. It is formed into a shape, and eight slits in one block are formed in a plurality of rows at predetermined intervals in the width direction in the plane part, and a number of blocks are vertically provided in the longitudinal direction. Is vented to one side to form a vent 8a, and a reinforcing edge 8b, which is higher than the height of the cut-and-raised piece, is formed at a right angle on the outer periphery to form a shallow box. It should be noted that the cut-and-raised pattern applied to the filter is not limited to the illustrated row shape, but may of course be the pattern divided into the quadrangular pyramid shown in the above-described embodiment. Furthermore, if the above-described filter support frame 7 and filter 8 are formed of a sheet material in which a fluororesin film is laminated on the surface of a thin metal plate, a filter support frame and a filter having excellent cleaning properties can be provided. Also, the operation of attaching and detaching the filter 8 to and from the filter support frame 7 is the same as that shown in the above-described embodiment, and a description thereof will be omitted.

[0017]

According to the first and third and fourth aspects of the present invention, the filter mounting structure of the present invention is provided with a ventilating fan and a flat range hood without a filter, or a filter with a low efficiency of capturing oil and fat. A filter excellent in the efficiency of capturing oil and fat can be easily attached to the exhaust device. Further, according to the configuration of the second aspect, even if the filter support frame and the filter are contaminated by the adhesion of oils and fats, the filter support frame and the filter can be easily cleaned by wiping, and the filter support frame and the filter having excellent cleaning properties can be provided.
Therefore, the existing exhaust device can be easily changed to an exhaust device having an excellent oil / fat removal effect.

[Brief description of the drawings]

FIG. 1 is a front view showing a structure for attaching a filter to a ventilation fan.

FIG. 2 is an enlarged sectional view taken along line (2)-(2) of FIG.

FIGS. 3A and 3B are enlarged views of a portion surrounded by a circle in FIG. 1, wherein FIG. 3A is a front view and FIG. 3B is a cross-sectional view taken along line bb of FIG.

FIG. 4 is a perspective view showing a filter support frame.

FIG. 5 is an exploded perspective view showing a state where a filter support frame is attached to a ventilation fan attached to a wall surface.

6A and 6B show a state in which the filter is attached to the filter support frame, FIG. 6A shows a state in which the upper part of the filter is inserted into the upper part of the filter support frame, and FIG. 6 shows a state in which the filter supporting frame is fitted to a lower receiving portion.

FIG. 7 is a front view showing a structure for attaching a filter to a flat range hood.

FIG. 8 is an enlarged bottom view of a main part of FIG. 7;

FIG. 9 is a perspective view showing a filter support frame.

FIG. 10 is an enlarged sectional view taken along line (10)-(10) in FIG. 8;

FIG. 11 is an exploded perspective view showing a state where the filter support frame is attached to a flat range hood.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ventilation fan 2 ... Wooden frame or insulating frame 3 ... Filter support frame 4 ... Filter 5 ... Screw 6 ... Flat range hood 7 ... Filter support frame 8 ... Filter 9 ... Thumbscrews

Claims (4)

[Claims] 1. A filter mounting structure for an exhaust device having no filter, wherein a filter support frame is fixed upstream of a suction port in the exhaust device, and a predetermined interval is provided between the filter support frame and a thin metal plate. And a filter having a vent formed by cutting and raising a flat portion between the slits in one direction to open a vent. 2. The filter and the filter support frame,
The structure for mounting a filter to an exhaust device according to claim 1, wherein the structure is made of a plate material in which a fluororesin film is laminated on a surface of a thin metal plate. 3. The exhaust device is a ventilation fan, and a filter support frame is covered so as to cover a decorative frame of the ventilation fan, and an upper portion of the filter support frame is attached to a wooden frame or an insulating frame fitted with the ventilation fan. The filter mounting structure according to claim 1, wherein the filter is fixed by screws. 4. The exhaust device is a flat type range hood, wherein a nut member is fixed to a lower plate having a suction port, and a filter support frame is clamped and supported by the nut member with a bolt member. A structure for mounting a filter to the exhaust device according to claim 1.