JP2003262375A - Range hood filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a easily attachable and disposable range hood filter capable of being securely fixed to a metallic filter without using magnet, a surface fastener, an installing component and the like, and reducing dirt such as soot and dust to an inner wall of the metallic filter or a fan. <P>SOLUTION: This bag-shaped or cylindrical disposable filter 10 puts the metallic filter 4 therein and is attached to a range hood. The filter simultaneously covers a draft inflow surface side and a draft outflow surface side. Cavities of a front surface side filter 1 in the draft inflow surface side are made to be rough, and cavities of a rear surface side filter 2 in the draft outflow surface side are made to be fine. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal filter for a range hood and a mounting structure for a disposable range hood filter (hereinafter referred to as a disposable filter) for preventing the inner wall of the metal filter, the inner wall behind the metal filter, and the like from being soiled.

[0002]

2. Description of the Related Art At the airflow inlet of a kitchen range hood, there is a metal filter provided for collecting oil smoke, dust, etc., but it is disposable to prevent dirt on itself and the inner wall behind it and the fan. A filter is used.

Disposable filters are available in a type having an aluminum foil frame and a non-woven fabric filter alone. The method for attaching a single-use disposable filter that does not have a frame such as aluminum foil is mainly by using a magnet or hook-and-loop fastener, or by using a separate component for attachment. The type that is attached to the metal filter of the hood or the short side of the rectangular filter is folded back about 5 cm and the two sides that overlap the long side are joined to form a bag, and the bag is covered with the metal filter. The other end is sandwiched between the range hood and the metal filter and fastened. There is also a method, and a filter in which triangular bag-shaped parts are attached so as to fit the four corners of the metal filter.

Most of the disposable filter materials are made of flame-retardant synthetic resin non-woven fabric, and in order to increase the collection effect of oil smoke, dust, etc. It is considered that the inter-fiber voids are coarse and the inter-fiber voids on the air flow outflow surface are made dense to enhance the collection effect. However, in any type, there is a tendency to increase the thickness in order to enhance the effect of the disposable filter itself.

[0005]

Looking at the conventional method of mounting a disposable filter, in the case of mounting with a magnet,
Since it is adsorbed to the range hood through the disposable filter, the suction power becomes weak due to the thickness of the disposable filter.
Furthermore, since disposable filters tend to become thicker in the future, stronger magnets will have to be used. There are also accidents in which the magnet is dropped by moving the disposable filter, such as when attaching the disposable filter and fixing the magnet before moving it. A fall accident around the stove can lead to a fire. In addition, the filter itself is disposable, but since the magnet can be used many times, the manufacturer sells two types of products, one with magnets and one without magnets, making it difficult for consumers to understand.

For the surface fastener, the surface fastener must be adhered to the metal filter portion or the range hood itself, and it is preferable not to use an adhesive material in the range hood where the temperature rises considerably. In addition, since the entanglement of the non-woven fabric itself is uneven,
There are some places where the hook-and-loop fastener can be worn well and places where it is difficult to reach. Furthermore, since the weight of a disposable filter becomes heavy when it absorbs oil, some products use a surface fastener and a magnet together to withstand that.

The method of using other parts is also economically expensive. Further, in the method of applying a lattice or stripe adhesive treatment to a disposable filter, the adhesive strength may be weakened when the temperature rises. Further, the function of the adhesive-treated portion as a filter may be reduced. Others A method of making a bag part of about 5 cm on the end of a disposable filter and covering it with a metal filter and sandwiching it with a metal filter and a range hood and attaching it because the parts other than the bag part may float from the metal filter after all. It is a combination of. If all four corners are made into a bag shape, the corresponding size is small and it is dedicated to specific models for versatility.

Therefore, it is desired to provide a simple mounting method that is highly compatible with the model without attaching a surface fastener or the like to the range hood or the metal filter and using a mounting member such as a magnet.

Further, the disposable filter tends to have a large thickness in order to improve its performance, and it becomes increasingly difficult to cope with it by the conventional mounting method.

The increase in the collection effect of oil smoke and dust of the disposable filter means that the total weight of the disposable filter gradually increases during use. In that case, the disposable filter sags and separates from the metal filter so that it can be seen at home. Then, when the range hood is switched on and the fan starts to rotate, the slack disposable filter sticks to the metal filter side, leading to a reduction in suction power. Therefore, it is desired that the disposable filter on the front side of the metal filter is hard to sag even if the disposable filter collects oil smoke, dust and the like and increases the total weight.

Rather than simply thickening the disposable filter with the same void, it is possible to effectively collect oil smoke, dust, etc. by roughening the air flow inflow side and making the air flow outflow side dense. .

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is a bag-shaped or tube-shaped one in which a disposable filter can be easily and surely attached. The metal filter is put in a cylindrical or tubular disposable filter and it is attached to the range hood again.

Most of the popular metal filters have a short side of about 300 mm, and a method of adjusting the filter size in the long side direction by setting the opening side of the bag-shaped and cylindrical filters of the present invention to 300 mm. When taken, the model adaptability increases.

Since it is a bag-shaped or tubular disposable filter, the mounting of the disposable filter is completed simply by inserting the metal filter therein, but the disposable filter becomes loose as the weight increases due to adsorption of oil smoke and dust. Even if the disposable filter collects oil smoke, dust, etc., the stretchable front filter prevents the slack of the front filter by using a stretchable material.

Since the metal filter itself has many sharp edges, when a bag-shaped or tubular disposable filter is made of a material having low elasticity, when the metal filter is put in, the corner of the metal filter is caught by the disposable filter and attached. Since it is difficult to do so, the material located on the rear side of the metal filter of the disposable filter is made a stretchable material, and the metal filter can be easily installed in the disposable filter by mounting it while stretching.

Further, the method of attaching the bag-shaped and tubular disposable filters is not complicated because magnets, surface fasteners and attachment parts are not used. In addition, there is no need to worry about a fall accident.

Furthermore, the disposable filter of the present invention has a bag shape and a tubular shape, and can cover not only the front surface of the metal filter but also the rear surface thereof at the same time.

By removing oil smoke, dust, etc. with the front filter of the disposable filter, collecting oil smoke, dust, etc. that have passed through the front filter with a metal filter, and finally removing oil smoke, dust, etc. with the rear filter It has the effect of reducing dirt such as oil smoke and dust from the inner wall of the filter and the fan.

Further, in the process of collecting oil smoke, dust, etc. from the front filter to the metal filter and the rear filter, they are removed from large particles such as oil smoke and dust, and become smaller successively. Therefore, the effect of collecting oil smoke, dust and the like is improved by making the inter-fiber voids of the rear filter smaller than the inter-fiber voids of the front filter.
INDUSTRIAL APPLICABILITY The present invention has a structure of a disposable range hood filter that can be easily attached and does not use magnets, hook-and-loop fasteners, and attachment parts, and at the same time has a function of improving the dirt collecting ability which is a basic function of the disposable filter.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments embodying the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention.

First, FIG. 1 is a perspective view of a basic configuration according to the present application. The front-side filter 1 is made of a flame-retardant non-woven fabric containing a polyester resin, and the rear-side filter 2 is made of a flame-retardant elastic net and is sewn into a bag shape. This is an example, but there is also a method in which heat-welding fibers are put in the front filter 1 and the rear filter 2 to heat-bond them. The front filter 1 is formed of relatively thick fibers because of the air flow inflow surface, and the gap is wider than that of the rear filter 2. The rear filter 2 is made of a stretchable net in which the fibers are thinner than the front filter 1 and the interfiber gap is narrower than that of the front filter 1.

FIG. 2 shows a metal filter attached to the range hood. The metal filter 4 is put in the bag-shaped disposable filter 10 shown in FIG. 1, and the front filter 1 of the bag-shaped disposable filter 10 is located on the side where the metal filter stopper 5 is located. The metal filter 4 is placed so that the side is the rear side filter 2 of the bag-shaped disposable filter 10 and the rear side of the metal filter 4 without the metal filter stopper 5.

FIG. 3 is a view showing the bag-shaped disposable filter 10 with the metal filter 4 inserted therein. Since a stretchable material is used for the material of the rear surface side filter 2, the rear surface side filter 2 is stretched while the metal filter 4 is inserted thereinto. Easy to do. If this is a material that does not expand or contract too much, the material of the disposable filter is caught in the corners of the metal filter 4 or the like, making it difficult to insert the metal filter 4. Also, if it is forcibly inserted, the disposable filter material may be broken.

Furthermore, since a stretchable material is used for the rear filter 2, it is difficult to form a gap with the metal filter 4. In addition, even if the front side filter 1 becomes heavy by absorbing oil smoke, dust, etc., it has a structure that does not easily sag.

Since the metal filter 4 is put into the bag-shaped disposable filter 10 as described above, it is completed when it is then attached to the range hood as usual. Therefore, there is no need to use magnets, hook-and-loop fasteners or attachment parts.

The size of the popular metal filter 4 is rectangular and the short side (width direction) is about 300 mm, and the size of the bag-shaped disposable filter 10 can be adjusted and attached on the long side. .

Further, it is also possible to change the color by printing on the front filter 1 so that the front and rear of the bag-shaped disposable filter 10 are not mistaken. Further, the color and the printed pattern can also serve as an indicator for notifying the replacement time by the change with time after installation.

FIG. 4 is a schematic cross-sectional view in which a metal filter is put in a bag-shaped disposable filter and attached to a range hood. By the rotation of the fan, oil smoke, dust, etc. 8 are sucked from the inflow side 11 of the air flow. Cross section 1a of front filter
The large particles of oil smoke, dust, etc. 8 were removed at 8 and the oil smoke, dust, etc. 8 that passed through the voids were
The oil smoke, dust, etc. 8 that have been removed by a and have passed therethrough are further collected by the cross section 2a of the rear filter. Due to this effect, dirt on the inner wall 6 at the back of the metal filter, the fan 7, etc., and the dust 8, etc., are significantly reduced.

FIG. 5 is a diagram showing the results of comparative experiments when a range hood filter made of a commercially available non-woven fabric was attached only to the front surface of the metal filter and to both front and rear surfaces. As shown in Fig. 5, the back side filter of the non-woven fabric filter that covers both front and back sides is dirty, and the back side metal filter that covers only the front side of the metal filter becomes sticky to the touch, so oil smoke and smoke passing through the filter that covers the front side of the metal filter It was verified that there was dust and debris.

[0030]

As is apparent from the above description, by applying the technique according to the present application, a disposable range hood filter having a bag shape and a tubular shape can be easily attached to the metal filter of the range hood, and the conventional attachment is possible. There is no need to use mounting parts or hook-and-loop fasteners, which is the method, and magnets are not used, so there is no fear of falling accidents. Also, since the filter located on the rear side is made of an elastic material, the front side filter absorbs oil smoke, dust, etc. and prevents it from becoming heavy and sagging. Further, the collecting function of the bag-shaped and tubular disposable range hood filters can reduce dirt such as oil smoke and dust on the inner wall at the back of the metal filter and the fan by the effect of the filter on the rear surface side as compared with the conventional filter.

[Brief description of drawings]

FIG. 1 is a perspective view of a bag-shaped disposable filter as a preferable state of the present invention.

FIG. 2 is an explanatory view of a metal filter provided in a range hood.

FIG. 3 is an explanatory view showing a state where a metal filter is put in a bag-shaped disposable filter.

FIG. 4 is a schematic cross-sectional view for collecting oil smoke, dust, etc. by changing the inter-fiber gap between the front filter and the rear filter.

FIG. 5 is a diagram showing the results of a comparative experiment of stains when the front surface of the metal filter is covered with the non-woven fabric filter and when the front surface and the rear surface of the metal filter are both covered with the non-woven fabric filter.

[Explanation of symbols]

1 Front filter 1a Front filter cross section 2 Rear filter 2a Rear filter cross section 3 connection 4 metal filters 4a Metal filter cross section 5 Metal filter stopper 6 Inner wall behind the metal filter 7 fans 8 oil smoke, dust, etc. 10 Bag-shaped disposable range hood filter 11 Airflow inflow side 12 Airflow outflow side

Claims (3)

[Claims] 1. A disposable range hood filter in the form of a bag and a cylinder, wherein a metal filter provided with a range hood is put in the filter to be used by attaching to the range hood. 2. The disposable range hood filter to be attached is a disposable range hood in which the disposable range hood filter part located on the front side of the metal filter and the disposable range hood filter part located on the rear side are not on the same roll but on the rear side. The filter is more expandable than the disposable range hood filter located on the front side, and when the filter is attached to the metal filter, the disposable range hood filter itself can be attached while being stretched.
Disposable range hood filter described 3. A disposable range hood filter mounted to reduce dirt and dust from the metal filter and the inner wall of the metal filter and the fan, which is more than the space of the disposable range hood filter located on the front side to be mounted on the metal filter. The void of the disposable range hood filter located on the rear surface side is dense.
Disposable range hood filter as described.