JPH06170140A - Filter apparatus for range hood - Google Patents

Abstract

PURPOSE:To provide a filter apparatus for a range hood which is inexpensive and free to dispose and can lengthen the durable period of the filter apparatus without increasing the material cost of the filter apparatus formed of a non- woven fabric. CONSTITUTION:The central part of a filter material prepd. by laminating integrally a gas permeable sheet 1 such as nonwoven fabric and a reinforcing net is expanded downward and the bottom face of this expanded part 3 is formed into a wavy curved face by arranging alternatively a valley-shaped bent part 4 bent downward and a mountain-shaped bent part 5 bent upward along the longitudinal direction of the bottom face. A fixing tool 8 consisting of a permanent magnet and a clip is removably provided on a flat fixing part 7 of the peripheral edge of the expanded part positioned on an extended line of the valley-shaped bent part 4a on the outermost side of the wavy bent face and four corners of the fixed part 7 are obliquely cut by an angle close to the fixing tool 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable type range hood filter device which is disposed above a domestic or commercial cooking gas range and used by being attached to a range hood for exhausting gas. In particular, the present invention relates to a range hood filter device formed of a flexible breathable sheet material such as a nonwoven fabric.

[0002]

2. Description of the Related Art Conventionally, a range hood equipped with a rotary exhaust fan has been widely used above a gas range in kitchens of general households as well as in kitchens of restaurants to discharge oil smoke and odors generated during cooking. Has been done.

This type of range hood has been used in which the lower part of the range hood housing is opened to provide an intake port and a rotary exhaust fan is installed inside the housing. A guard member such as a wire mesh is attached to the intake port so that oil smoke and odor generated during cooking are exhausted to the outside of the room.

However, in such a range hood, the oil smoke during cooking adheres to and contaminates the internal exhaust fan, including the guard material such as wire mesh, and if the cleaning is neglected for a long period of time, the oil content of the oil smoke is lost. However, there was a problem that it was solidified inside the range hood and formed into drops, which dropped into the gas range and became unsanitary.

Therefore, a filter device for adsorbing the oil content of oil smoke is attached to the intake port of such a range hood to prevent the exhaust fan and guard material inside the range hood from being contaminated with the oil content. In order to maintain the hygiene of the range hood after the filter material has become dirty after a certain period of time, the filter device is disposable.

In the above-mentioned disposable type range hood filter device, for example, as shown in FIG. 6, a breathable sheet 1 such as a non-woven fabric which is inexpensive and has excellent oil adsorption is processed to form an intake port of the range hood. It has been adopted so that it can be attached to a frame hood, and its peripheral portion is reinforced with an aluminum frame member 30 and an attachment piece is appropriately provided on this frame member 30 and an intake port of a range hood with a magnet 31 etc. It was attached (not shown).

However, the aluminum frame member 30 is an extremely expensive material as compared with the breathable sheet 1 such as a non-woven fabric, and is formed by forming an aluminum sheet having a relatively large thickness in order to obtain strength. There is a problem in that expensive resources are wasted if waste filters are frequently replaced and thrown away. On the other hand, except for the aluminum frame member 30 of the filter device,
An inexpensive filter device can be provided as a whole by forming the filter device only with the breathable sheet 1 such as a nonwoven fabric and fixing it with the magnet 31. In this case, the nonwoven fabric is flexible and weak. Therefore, it is difficult to attach the flat breathable sheet 1 as it is to the air intake port of the range hood so as to be completely attached, and a gap is generated between the air intake port of the range hood and the back surface of the filter material. The air sucked from the side surface of the filter material shook the edge of the filter material and passed through the gap, so that the oil smoke from the gas range did not pass through the filter material and the filter material and range hood There was a problem that the fan would be contaminated by directly entering the housing of the range hood through the gap with the intake port.

On the other hand, the Applicant has proposed a range hood filter device in which the central portion of a filter material made of a breathable sheet such as a non-woven fabric is bulged downward and the periphery of the bulged portion is formed into a flat mounting portion. As I proposed earlier, this one is
For example, as shown in FIG. 7, the central portion of the breathable sheet 1 such as a nonwoven fabric is bulged downward, and the bottom surface of the bulged portion is formed into a wavy curved surface of a mountain shape and a valley shape. Department
32 is a disposable filter device in which the flat part of the periphery is fixed to the housing of the range hood by the magnet 31 at the position on the diagonal line X, Y which is the most corner part, and improves the adhesion of the peripheral part of the filter material. At the same time, the oil smoke can be adsorbed from the side surface of the filter material, and the aluminum frame material is eliminated to provide an inexpensive structure.

[0009]

However, in the filter device proposed above, the periphery of the filter material such as the non-woven fabric is simply attached by the magnet, so that the bulging portion of the non-woven fabric increases when the amount of oil adhered increases. Oil easily hangs down due to the weight of the oil, which may cause a gap in the flat surface around the bulging part, and if you use it for a longer period of time, the appearance due to dripping will still occur even if there is extra capacity to absorb oil smoke. There was a problem in that the replacement of the battery was necessary in a relatively short period of time due to a decrease in temperature and a gap in the peripheral portion.

In particular, when the magnets 31 are provided on the diagonal lines connecting the four corners of the bulging portion 3 of the filter material, the weight of the bulging portion 32 which has absorbed the oil is set to the bottom of the bulging portion as shown in FIG. There was a tendency that the mountain-shaped or valley-shaped bent portion could not be fully supported and the bent portion at the central position of the bulging portion 32 was loosened, and the entire body was likely to hang down. Further, if the amount of sagging increases, the mounting portion is also loosened, and there is a problem that a gap is likely to be formed between the mounting portion and the intake port of the range hood.

In order to prevent such sagging, a magnet is also arranged in the center of the mounting portion of the filter material, and the four sides of the filter material are evenly fixed with six or eight magnets. However, if many magnets are used, the number of magnet replacement points will increase when the filter material is replaced, and the replacement will be troublesome, and the filter device will be expensive due to the additional magnets. was there.

The present invention has been made in view of the above conventional problems, and is inexpensive and disposable for increasing the service life of the filter device without increasing the material cost of the filter device formed of the nonwoven fabric. It is an object of the present invention to provide a filter device for a range hood that does not bother you.

[0013]

In order to achieve the above object, the filter device for a range hood of the present invention has a central portion of a filter material formed by integrally layering a reinforcing net on a breathable sheet such as a nonwoven fabric. By bulging downward, the warp threads and the weft threads of the reinforcing net form rectangular bulging portions parallel to the long side and the short side, respectively, and flat mounting portions are provided on the four edges of the bulging portion. A fixing tool made of a magnet is detachably attached to both ends of the flat mounting portion on the short side on the extension line of both ends on the long side of the bulging portion.

In such a range hood filter device, as described in claim 2, the space between the warp yarn and the weft yarn of the reinforcing net is 1 to 5 mm, and
It is desirable that the fixing device is detachably attached to both ends of the flat mounting portion on the short side within 3 cm from both ends of the long side of the bulge inward. As described in, the bottom surface of the bulging portion is formed by alternately connecting valley-shaped bent portions bent downward and mountain-shaped bent portions bent upward at fixed intervals in the short side direction. It may be formed on a corrugated curved surface. Further, it is desirable that the four corners of the flat mounting portion are formed by obliquely cutting them at angles close to the fixture.

[0015]

The reinforcing net in which the warp yarn and the weft yarn are combined with the breathable sheet material is integrally provided by arranging the warp yarn and the weft yarn so as to be substantially parallel to the long side and the short side of the bulging portion. Therefore, the bulging portion and the flat mounting portion are reinforced with vertical and horizontal reinforcing threads, and moreover, both ends of the short side flat mounting portion on the extension line of the long side end portion of the bulging portion are connected to the magnet from the magnet. When the magnet is fixed to the range hood by pulling the reinforcing yarns to both sides of the bulging portion, the reinforcing yarns adjacent to each other along the bottom edge of the bulging portion maintain a tension state. By keeping it, the entire bulging portion can be prevented from hanging down for a long period of time.

Further, the air-permeable sheet is not impaired in air permeability by setting the distance between the warp yarn and the weft yarn of the reinforcing net to be 1 mm or more, and the distance between the warp yarn and the weft yarn is 5 mm or less. By providing the magnets in the knitted weave formed by the warp yarns and the weft yarns, it is possible to simultaneously pull two or more reinforcing yarns with the magnets to attach them in a tensioned state. In addition, the bottom surface of the bulging portion is formed into a corrugated curved surface by repeating the valley-shaped bent portion and the mountain-shaped bent portion, so that the oil smoke adsorption area is wide and the oil adsorption performance is high, and It is possible to provide a fixture made of a magnet on the flat mounting portion at the peripheral edge of the bulging portion located on the extension line of the outermost valley-shaped curved portion of the corrugated curved surface, and the valley-shaped curved portion of the breathable sheet It functions as a reinforcing rib that supports the bottom surface of the bulging portion, and further acts to further alleviate the sagging of the entire bulging portion. The outer valley-shaped bent portion is fixed in a state of being pulled from both sides along the bottom surface of the valley-shaped bent portion, and has an effect of supporting the bulging portion and preventing sagging.

Further, since the reinforcing net is integrally provided on the non-woven fabric and the yarn thereof is provided in parallel with the valley-shaped bent portion, the resistance force against the sagging of the valley-shaped bent portion is further increased. By reducing the sagging of the whole and forming the four corners of the filter material by cutting them diagonally at an angle close to the fixture, it is possible to prevent the four corners of the mounting part from warping or bending. Therefore, no gap is formed between the range hood and the filter material at the four corners, and oil smoke can be prevented from directly entering the range hood through the gap without passing through the filter.

[0018]

EXAMPLES Examples of the present invention will now be described with reference to the drawings. In the range hood filter, the entire back surface of the breathable sheet 1 made of a rectangular nonwoven fabric is roughened by vertical and horizontal synthetic fiber yarns 2a and 2b. A woven reinforcing net 2 is overlaid and integrally laminated to form a filter material, and the central portion of this filter material is bulged downward as shown in FIG. The flat mounting portion 7 is formed on the upper edge of the four-sided peripheral wall 6 of the bulging portion 3 while being formed.

The breathable sheet 1 and the reinforcing net 2 which constitute the filter material may be integrated by adhering the yarns 2a and 2b of the reinforcing net 2 to the breathable sheet 1, but they are shown in the figure. In the laminated state, some of the fibers of the breathable sheet 1 are entwined with the reinforcing net 2 by pressure bonding or the like to be integrally layered. Further, the warp yarn 2a of the reinforcing net 2 is provided so as to be parallel to the long side of the bulging portion 3, and the weft yarn 2b is provided so as to be parallel to the short side thereof. The large weave of the combination of the warp and weft threads 2a and 2b is 1 to 5 mm square, preferably 2 to
It is formed in 3mm square.

Further, in the flat mounting portion 7 which is horizontally extended from the upper end edge of the peripheral wall 6 of the bulging portion 3 by an appropriate width, a magnet is attached to both ends of the mounting portions 7a, 7a on the short side. The fixing tool 8 is attached. Specifically, the fixture 8 is attached to both ends of the short side attachment portion 7a on the extension line of the long side ends of the bulging portion 3, and its attachment range is bulging. It is provided within a length of 3 cm inward from the extension of the long side edge 3a of the part 3.

Therefore, according to the filter device having this structure, the reinforcing net 2 in which the warp yarn and the weft yarn are combined with the breathable sheet material 1 is arranged so that the warp yarn and the weft yarn are parallel to the long and short sides of the bulging portion 3, respectively. The bottom surface of the bulging portion is reinforced by the reinforcing threads of the vertical and horizontal reinforcing nets 2, and when the filter device is attached, the warp threads 2a of the bulging portion 3 are fixed. The tension is maintained by the weft thread 2b in the short side direction and the tension is maintained by the weft thread 2b to prevent the entire bulging portion 3 from hanging down.

At this time, the weave of the reinforcing net 2 is 2 to
Since it is formed in 3 mm square, it does not hinder the air permeability of the air permeable sheet 1, and the adsorption force for adsorbing oily smoke and the like during cooking is almost the same as when the reinforcing net 2 is not provided. It was excellent in adsorbing oily smoke and odor from the cooking table.

Next, FIG. 2, FIG. 3 (a), FIG. 3 (b) and FIG. 4 show another embodiment of the filter device for the range hood of the present invention. Two
By the layered filter material with
When forming the bulge, the bottom wall surface of the bulging portion 3 is bent downward in a zigzag shape at regular intervals in the short side direction and is bent downward to extend in the long side direction. And the mountain-shaped bent portions 5, 5, 5, ... Which are bent upward are alternately formed in a continuous shape.

At the four edges of the bottom wall formed by the continuous bent portions 4 and 5, the peripheral wall 6 and the flat mounting portion extending in the horizontal direction from the upper edge of the peripheral wall 6 are formed as in the above embodiment. 7 are integrally provided, and the valley-shaped bent portions 4 of the bulging portion 3 are provided at both ends of the short side attachment portion 7a at the four corners of the attachment portion 7,
4, 4, ... Valley-shaped bent portions 4 located at both ends on the long side
A fixture 8 made of a magnet is provided near the bulging portion 3 on the extension line A of a and 4a. The four corners of the mounting portion 7 are formed on the obliquely cut end surface 7b obtained by obliquely cutting the edge at an angle close to the fixture 8.

That is, the fixtures 8 are provided at four places in the vicinity of the four corners of the mounting part 7, and the respective positional relationships are as shown in FIGS. 3 (a) and 3 (b). Is on the extension line A of the valley-shaped bent portions 4a, 4a located on the outermost side of the bulging portion 3, and the both ends of the valley-shaped bent portions 4a, 4a are supported by the fixtures 8, respectively. Is provided.

As shown in FIG. 4, the fixture 8 includes a metal shell 10 having a permanent magnet 9 having a through hole 11 located on the upper surface of the mounting portion 7, and the permanent magnet 9 from the lower surface side of the mounting portion 7. The clip 12 is made of synthetic resin and has a projection 15 which is divided into two parts and which engages with the through hole 11 provided in the clip 12. The clip 12 is for easily mounting and replacing the filter device with respect to the range hood. The knob portion 13 is provided. In addition, in the attachment portion 7 of the breathable sheet 1,
A through hole 14 is provided in advance at the position where the fixture 8 is arranged, and the projection of the clip 12 is inserted through the through hole 14.
15, the permanent magnet 9 and the metal shell 10 are detachably fixed.

Next, the procedure for attaching the range hood filter device having the above-described configuration to the intake port of the range hood will be described. First, as shown in FIG.
The metal shells 10 provided with the permanent magnets 9 are arranged so as to match the through holes 14 at the four corners of the above, and the protrusions 15 of the clips 12 are inserted from the lower surface of the mounting portion 7, and the protrusions 15 are inserted into the through holes 11 of the permanent magnet 9. Engage. In this way, the permanent magnets 9 are respectively attached to the four corners of the mounting portion 7.
After attaching, the filter device is fixed to the intake port of the range hood 20 by the magnetic force of the magnet 9 as shown in FIG. At this time, the fixing position of the magnet is adjusted so that each mounting portion 7 does not loosen.

Next, a filter device of the present invention according to the above-mentioned embodiment and a filter device in which the mounting position of the fixture 8 by the magnet with respect to the mounting portion 7 is different are prepared as comparative examples and installed in the same range hood. The results of using the same for 25 days were compared. In the comparative example, as shown in FIG. 7, the position of the fixture was on the diagonal lines X and Y of the inner bulging portion of the mounting portion, and was provided outside the bulging portion 3 at a distance of 1 cm.

When both of them were used for 25 days, oil was adsorbed to measure the amount of sag in the central portion, and in the filter device of the present invention, the maximum amount of sag of the bulging portion 3 was only 5 mm as shown in FIG. The appearance did not change so much, and the appearance that could be continuously used was maintained, while in the comparative example, the maximum amount of sag of the bulging portion 32 was about 30 mm as shown in FIG. However, the external appearance becomes unsightly, and the central portion of the mounting portion 7 hangs down to form a gap between the mounting portion 7 and the range hood.

[0030]

As described above, according to the filter device for a range hood of the present invention, the central portion of the filter material formed by integrally layering the reinforcing net on the breathable sheet such as nonwoven fabric is bulged downward. The warp yarns and the weft yarns of the reinforcing net form rectangular bulging portions that are parallel to the long side and the short side, respectively, and flat mounting portions are provided on the four peripheral edges of the bulging portion. Since a fixture made of a magnet is detachably attached to both ends of the flat attachment portion on the short side on the extension line of both ends on the long side, when the fixture is attached to the range hood, The warp yarns of the reinforcing net of the bulging portion on the extension of the fixed portion are pulled by the pair of fixing portions to maintain the tension state, and all the warp yarns are tensioned via the weft yarns intersecting the warp yarns, and thus, Prevents bulging of the bulge for a long time Is intended, it without causing a decrease in the appearance, but always appearance may be used.

Further, it can be used as a disposable filter material for a range hood which can prevent the non-woven fabric from hanging down without using a frame material made of aluminum. After use, the magnet is removed and only a breathable sheet such as the non-woven fabric is used. It suffices to throw away and replace it, and it is possible to provide an inexpensive and resource-saving disposable range hood filter device that does not waste resources.

Further, the warp yarns and the weft yarns of the reinforcing net have an interval of 1 to 5 mm, and are fixed to a flat mounting portion within 5 cm inward from the extension lines of both ends of the bulging portion. By providing the tool in a detachable manner, the breathability of the breathable sheet is not impaired, the tension of the bulging portion is improved and the sagging prevention effect is great, and sufficient oil content is absorbed. It does not deteriorate the appearance.

Furthermore, the bottom surface of the bulging portion is formed in a corrugated shape in which valley-shaped bent portions bent downward and mountain-shaped bent portions bent upward are alternately arranged at regular intervals in the short side direction. By forming it on the curved surface, it is possible to efficiently adsorb oil smoke on the corrugated bottom surface of the bulging portion of the breathable sheet and the side wall surface of the bulging portion, and the valley-shaped bent portion reinforces the entire bulging portion. It acts as a rib and is attached in a tensioned state by pulling both ends of the outermost valley-shaped bent portion with the fixture by the magnet, so that the valley-shaped bent portion does not hold its shape and hang down. , It prevents the sagging due to adsorption of oil etc. by supporting the inner mountain-shaped bent part and the valley-shaped bent part, and even if it is used for a long period of time, the oil will stick to the filter device so that it does not sag or create a gap. Never happens, The watch with good keeping those that can be maintained for a long time sufficient adsorption effect.

The breathable sheet material is constituted by a reinforced non-woven fabric integrally provided with a non-woven fabric and a reinforcing net formed by combining warp yarns and weft yarns, and has valley-shaped bent portions and mountain-shaped bent portions on the bottom surface of the bulging portion. However, since it is formed along a direction parallel to the warp direction of the reinforcing net, it is possible to further strengthen the shape-retaining force of the valley-shaped bent portion and increase the resistance to sagging. However, there is an advantage that the sagging prevention effect can be maintained for a long time. Furthermore, since it is characterized by being formed by obliquely cutting the four corners of the flat mounting portion at an angle close to the fixture, the occurrence of gaps due to bending or curling of the four corners of the filter is prevented, It is possible to effectively prevent the contamination of the range hood fan.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a range hood filter device of the present invention,

FIG. 2 is a perspective view showing another embodiment of the range hood filter device of the present invention,

3A is a plan view thereof, FIG. 3B is a side view thereof,

FIG. 4 is a partially enlarged side view illustrating a mounting structure of a fixture,

FIG. 5 is a perspective view illustrating the usage of the range hood filter device of the present invention;

FIG. 6 is a plan view showing a conventional example using an aluminum frame material,

FIG. 7 is a perspective view illustrating a conventional proposal example formed of non-woven fabric,

FIG. 8 is a perspective view illustrating a hanging state of the range hood filter device of the present invention;

FIG. 9 is a perspective view illustrating a hanging state of a conventional proposal example formed of a nonwoven fabric.

[Explanation of symbols]

 1 Breathable Sheet 2 Reinforcing Net 3 Bulging Part 4 Valley Type Bent Part 4a Valley Type Bent Part Located on Outermost Side 5 Bent Type Bend Part 6 Circumferential Wall 7 Mounting Part 8 Fixture

Claims (4)

[Claims] 1. A warp yarn and a weft yarn of a reinforcing net are bulged downward so that a warp yarn and a weft yarn of the reinforcing net are formed on a long side and a short side, respectively. Forming a rectangular bulging portion parallel to the bulging portion and providing flat mounting portions on the four edges of the bulging portion, and further, a short side flat mounting portion on an extension line of both long side ends of the bulging portion. A filter device for a range hood, characterized in that fixing tools made of magnets are detachably attached to both ends of the filter. 2. The reinforcing net has a warp and weft spacing of 1 to 5
In addition, the fixing members are detachably attached to both ends of the flat mounting portion on the short side within 3 cm inward from both ends of the long side of the bulging portion. The filter device for a range hood according to claim 1. 3. A corrugated shape in which the bottom surface of the bulging portion is alternately arranged with valley-shaped bent portions bent downward and mountain-shaped bent portions bent upward at regular intervals in the short side direction. The filter device for a range hood according to claim 1, wherein the filter device is formed on a curved surface. 4. The filter device for a range hood according to claim 1, wherein the four corners of the flat mounting portion are formed by obliquely cutting them at angles close to the fixture.