JPH11197428A - Replacement filter for ventilation hole and method of determining replacement time - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable easy determination of degree of contamination adhering to a replacement filter without removing a replacement filter from a ventilation hole by providing an indicator having a visually recognizable identity changing in accordance with usage status on a particular position of a filter main body. SOLUTION: A replacement filter 16 is disposed so as to cover a ventilation hole 13 of a range hood body 12 and the replacement filter 16 is secured by pressing an end part by a magnetic holder 16a having a sheet-like shape or the like. A small-piece face-like fastener 14 used as an indicator is made of a material such as a plastic, cloth or the like having a color different from that of a filter body 15. A large number of fine hooks 14a are formed on a bonding face with the filter body 15 and the face-like fastener 14 is attached to a specified position of the filter body 15 so as to insert the hooks 14a in the filter body 15, and the hooks 14a are entangled with fibers of the filter body 15 made of a nonwoven fabric and easily secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for replacing an air vent such as a ventilation fan or a range hood, and a method for judging the replacement time.

[0002]

2. Description of the Related Art Dirt such as oily smoke and dust is sucked into a vent of a ventilation fan or a range hood, etc. together with the surrounding air, and the dirt adheres to an inner surface of an exhaust passage or a fan of a ventilation fan, requiring time and effort for cleaning. Or ignite attached dirt, causing a fire. For this reason, a ventilation filter or a range hood or the like is provided with a replacement filter (filter) for adsorbing and capturing dirt such as oil smoke and dust in advance.

[0003]

However, if a ventilation fan or a range hood in which such a filter is attached to a vent hole is used for a long time, the filter main body is clogged by dirt attached to the filter, and the ventilation fan or the range hood is clogged. There is a problem that the exhaust efficiency of the hood is reduced. Therefore, according to the degree of dirt adhering to the filter body, it is necessary to determine the replacement time and properly replace the filter. In the state,
Because it is difficult to accurately determine this adhesion state,
There is a problem that the filter cannot be used efficiently because the filter replacement time is too early or too late.

The present invention has been made in view of such circumstances, and it is possible to easily determine the degree of dirt attached to a replacement filter without removing the replacement filter from a vent of a ventilation fan or a range hood. It is an object of the present invention to provide a replacement filter for an air vent and a method for determining the replacement time thereof.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
The replacement filter for a vent described in the claims is a replacement filter that is replaceably attached to a vent such as a ventilation fan or a range hood, and an indicator whose visual discrimination changes at a predetermined position of the filter body depending on a use state. Is provided. The ventilation filter according to claim 2,
The ventilation port replacement filter according to claim 1, wherein the filter body is translucent, and the indicator comprises:
The filter body is attached to the back side of the filter body, and is made of small pieces having a color different from the color of the filter body. According to a third aspect of the present invention, there is provided a filter for exchanging a vent according to the first aspect, wherein the indicator is attached to a surface side of the filter main body to adsorb a predetermined amount of oil smoke or dust. The dirt sensor changes its color.
According to a fourth aspect of the present invention, there is provided a filter for replacing a vent according to the first aspect, wherein the filter main body is translucent, and the indicator is attached to a back side of the filter main body. , A dirt sensor that changes color by absorbing a predetermined amount of oily smoke or dust. The vent replacement filter according to claim 5, wherein the indicator is a planar fastener, an adhesive, or a transparent double-sided tape in the vent filter according to any one of claims 1 to 4. Is attached to the filter main body through a. The vent replacement filter according to claim 6 is the vent replacement filter according to claim 1, wherein the filter main body is translucent, and the indicator has a color different from the color of the filter main body. It consists of a printing section printed on the back side of the filter body. The method for determining a replacement time of a filter for replacing a vent according to claim 7 includes disposing an indicator for detecting dirt on the filter main body on a front surface or a rear surface of a filter main body attached to a vent such as a ventilation fan or a range hood, A stain on the filter body is determined by a visual color change of the indicator.

[0006] While the filter body is excellent in air permeability,
It is made of a woven or nonwoven fabric made of polyester or the like that can adsorb and capture dirt such as oily smoke contained in the air. The state in which the filter body is translucent means a state in which the thickness of the filter body is as thin as about 0.5 to 8 mm and can be seen through the back side from the front side in an unused state free of dirt. . The indicator has a sensor function to change its own color tone by absorbing oil smoke or dust, or the filter body around the indicator is colored by the absorption of oil smoke or dust, and the indicator's discrimination by visual change This means that the degree of dirt adhering to the filter body can be determined. The display surface of the indicator may be a circle, a triangle, a square, or the like, or may be set to display characters and symbols.

A dirt sensor used as an indicator is a material that, when a predetermined amount of oily smoke, dust, or the like is adsorbed, changes in color and color tone due to changes in light reflectance and absorptivity due to the adsorption. For example, as such a material, a material such as paper, pulp, synthetic fiber, natural fiber, etc. to which a discolorable substance is attached can be used, and when a dye is used as the discolorable substance, the dye adheres. Since it is dissolved by edible oil or the like, it is possible to greatly change the overall color tone in accordance with the amount of oil adsorbed, that is, to change the visual discrimination. Furthermore, the peroxide value (P
V or POV), a POV sensitive test sticker (POV tester) having a discoloration function such as a litmus test paper that changes color according to the magnitude of the value is attached to the front or back surface of the filter body using an adhesive, and this is adhered. A dirt sensor for detecting oily smoke can also be used. A planar fastener is a fastener in which a large number of hook-shaped hooks for entanglement and bonding with a fiber such as a non-woven fabric serving as a filter main body are arranged on a joint surface, and can be easily placed at a predetermined position of the filter main body without an adhesive. Fasteners can be placed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a cross-sectional view of a range hood to which a method of determining a replacement time of a filter for replacing a vent according to a first embodiment of the present invention is applied, and FIGS. 2 (a) and 2 (b).
FIGS. 3A and 3B are explanatory views showing Modification Examples 1 and 2 of the replacement filter in the range hood, respectively, and FIGS. 3A and 3B each show a ventilation filter replacement filter according to the second embodiment of the present invention. FIG. 4 is a perspective view and an explanatory view of a ventilation fan to which the replacement time determination method is applied, and FIG. 4 is an explanatory view of a method of mounting a replacement filter on a filter support.

First, a description will be given of a range hood 10 to which a method of determining a replacement time of a filter for replacing a vent according to a first embodiment of the present invention is applied. Cooking table 11 in the kitchen
The range hood 10 provided on the upper part of the range hood is provided with a range hood main body 12 having a vent 13 for sucking air containing dirt such as oily smoke and the like at a lower portion, and is disposed over the vent 13 in the range hood main body 12, A colored planar fastener 14 as an example of the indicator has a replacement filter 16 attached to the back surface of the filter main body 15 and a fan 17 for exhausting the inside of the range hood main body 12.

[0010] The frame 1 is formed in a lattice shape or a net shape having many spaces so as not to obstruct the air flow as much as possible.
7a may be provided at the back of the vent 13 as needed, and the flexible replacement filter 16 may be fixed to this. In the present embodiment, the replacement filter 16 is arranged so as to cover the ventilation port 13 of the range hood body 12, the end of the replacement filter 16 is bent, and this end is formed in a sheet shape around the ventilation port 13. The replacement filter 16 is attached by holding down with the magnet holder 16a having the shape shown in FIG. The filter fixing frame is pressed around the replacement filter 16 and the filter fixing frame is fixed to the vent 13 by fixing means such as magnets, hooks, bolts, or the like. The replacement filter 16 may be fixed to the vent 13 with an adhesive without using a body. Filter body 15
Is made of a nonwoven fabric of polyester or the like having a thickness of about 0.5 to 8 mm and a small bulk density. For this reason, while permitting the flow of a predetermined amount of air, it has the ability to adsorb oil smoke and the like contained in the air, and an indicator of a color different from the color of the filter main body 15 arranged on the back surface of the filter main body 15 is arranged. In this case, since the translucent state allows the back side to be seen through from the front side, the position, color, and the like can be easily confirmed by passing the indicator through the front side of the filter body 15. it can. In addition, in consideration of the danger of ignition to a flame or the like, the polyester fiber used for the material of the filter body 15 may be subjected to a non-combustible treatment in which the surface is coated with a non-combustible agent such as a carbonate in advance. desirable.

A small piece-shaped planar fastener 14 of a color different from the color of the filter body used as an indicator is, for example, yellow when the color of the filter body 15 is white.
By using a material made of transparent or opaque plastic, cloth, or the like having a color such as red, green, purple, blue, black, or brown, the filter body 15 can be easily identified through the surface of the filter body 15. . In particular, when the color of the filter main body 15 when the filter main body 15 becomes dirty with oil smoke or the like becomes yellow, the planar fastener 14 is made yellow when the filter main body 15 becomes dirty by matching the yellow color according to the color at that time. Therefore, it becomes effective in accurately grasping the replacement time of the replacement filter 16. The planar fastener 14 is, for example, 1/5000 to 1/10 with respect to the effective area of the replacement filter 16.
It is a small piece having a small area and formed in a square shape or the like. The flow of air can be prevented from being largely hindered by the planar fastener 14, and the distinctiveness of the planar fastener 14 is also ensured. It is desirable to arrange the planar fastener 14 at a position that is easy to identify when viewed from the side of the ventilation opening 13 during use of the range hood 10, for example, at the center, in order to increase visibility. As shown in the partially enlarged view of FIG. 1, a large number of small hook-shaped hooks 14 a are formed on the joining surface of the planar fastener 14 with the filter body 15, and the planar fastener 14 is placed at a predetermined position of the filter body 15. Hook type hook 1 inserted into filter body 15 by attaching
The fibers 4a are entangled with the fibers of the filter body 15 made of a nonwoven fabric and are easily fixed. It should be noted that, instead of the planar fastener 14, a pressure-sensitive adhesive, or a colored plastic adhered via a transparent double-sided tape, a material such as cloth can be used as the indicator, and the colored adhesive tape itself is used as the indicator. You may. This adhesive tape is obtained by applying an adhesive to the back surface of a seal having a predetermined shape such as a circle, an ellipse, a triangle, and a rectangle. It may be attached and used each time, or may be attached to the back surface of the filter body 15 in advance.

Next, a method of determining the replacement time of the replacement filter 16 applied to the range hood 10 will be described. First, a predetermined position on the back surface of the filter body 15, for example,
A planar fastener 14 is attached to the center and fixed. Next, the filter body 1 to which the planar fastener 14 is attached
The replacement filter 16 is put on the ventilation port 13 from the back side of the filter 5. Then, a plurality of rod-shaped or button-shaped magnet holders 16 a are used to fix the filter body 15 from above the end of the filter body 15 around the vent 13, and the filter holder 15 is attached to the iron vent 13. In the initial setting state of the replacement filter 16, when the replacement filter 16 is viewed from the outside of the vent 13, the position and color of the planar fastener 14 attached to the back surface through the filter body 15 which is translucent are determined. As shown in FIG. 1, the state can be easily confirmed.

When the range hood 10 is in operation, the fan 17 is rotated so that air containing water vapor, oil smoke, dust and the like in the kitchen is sucked from the vent 13 of the range hood 10 and passes through the replacement filter 16. Let it smoke,
The dirt such as dust is attached to and adsorbed to the filter main body 15 and then discharged to the outside air. Accordingly, with the operation of the range hood 10, the filter body 15 gradually discolors or becomes less transparent with the operation of the range hood 10, and the planar fastener 14 disposed on the back side is viewed from the front side. The color, shape, etc., when changed.
For this reason, when the replacement filter 16 is replaced when a large amount of dirt such as oil smoke and dust adheres, the surface fastener 14 is not replaced.
Of the air vent 13
The replacement time of the replacement filter 16 can be easily known by appropriately observing from the outside without removing the replacement filter 16 from. The replacement filter 1
To make the observation of 6 easier, a dedicated lighting device may be attached to the upper or lower part of the replacement filter 16 as necessary. Further, in the present embodiment, the planar fastener 14 is arranged on the back side of the filter main body 15, but may be arranged on the front side of the filter main body 15.
In this case, the surroundings of the filter main body 15 are discolored by dirt such as oily smoke and dust, and it becomes difficult to identify the planar fastener which is the indicator arranged on the front side, so that the degree of dirt on the filter main body 15 can be determined. .

Next, FIGS. 2A and 2B show Modification Examples 1 and 2 of the replacement filter applied to the method for determining the replacement time of the ventilation port replacement filter according to the first embodiment. This will be described with reference to FIG. The replacement filter 16b of the first modification shown in FIG. 2A is an example in which a colored nonwoven fabric 18 cut into small pieces is used as an example of an indicator. A square nonwoven fabric 18 having a size of about 5 to 30 cm is arranged using an adhesive or sewn with a thread. Since such a nonwoven fabric 18 has substantially the same air permeability as the filter main body 15, the resistance to the flow of air passing through the filter main body 15 is small, and the area of the nonwoven fabric 18 adhered to the filter main body 15 is increased. Even so, the air exhaust efficiency can be maintained in a necessary range. In this case, the nonwoven fabric 18
Was made to have a checkered pattern composed of a yellow portion having a different color from the white color of the filter body 15 and a white portion having the same color. It is also possible to use a highly permeable woven fabric as the indicator in addition to the nonwoven fabric 18. In addition, a non-woven fabric to which a dye or the like having a property of discoloring by adsorbing a predetermined amount of oil smoke or dust may be disposed on the filter body 15 as a dirt sensor. Further, the nonwoven fabric 18 or woven fabric used as the indicator is
Depending on the thickness of the filter body 15, the weight of the fiber, such as the basis weight and the fiber diameter, can be adjusted to make the indicator easier to see or hard to see.

The replacement filter 16c of the second modification shown in FIG.
The printing unit 19 is formed by spraying paint, ink, or pigment of a color different from the color of No. 5 by spraying, transferring, or the like, or by handwriting to form a printing unit 19, which is used to determine the stain on the filter body 15. This is the indicator. In this case, since the air permeability of the filter main body 15 is not impaired, the printing section 19 can be applied to almost the entire surface of the filter main body 15, and the pattern of characters, symbols, figures, and the like on the filter main body 15 can be enlarged. Can be displayed.
For example, when looking through the replacement filter 16c,
The "usable" character string may be displayed large in red or the like on the replacement filter 16c, so that the "usable" display character can be made invisible at the time of filter replacement. Further, the printing unit 19 displayed in red
However, the color of the filter main body 15 may be changed from white to yellow when the color of the filter main body 15 is changed from white to yellow. Also in the present embodiment, the above-described effect can be obtained even if the printing portion is formed on the front surface side of the filter main body 15.

Next, a description will be given of a method of determining a replacement time of a filter for replacing a vent according to a second embodiment of the present invention. FIG. 3 is an explanatory diagram of a ventilation fan 20 to which a method of determining a replacement time of a filter for replacing a vent according to a second embodiment of the present invention is applied. The ventilation fan 20 includes a replacement filter 23 in which a red nonwoven fabric 21 which is an example of an indicator is attached to the center of the front surface or the back surface of the filter body 22, and a ventilation fan 20 for fixing and supporting the replacement filter 23.
And a frame 26 provided with a ventilation fan 25 whose front portion is covered by the filter support 24, and is provided on a side wall of a factory building or the like.

The nonwoven fabric 21 is made of a vegetable fiber such as seed hair fiber (cotton, kapok), bast fiber (camellia, mitsumata, ama, ramie), vein fiber (manilaasa) or the like which is a raw material. It can be obtained by flowing in a fluid, scooping and collecting fibers by using a screen, and forming a thin mat. If it is necessary to further reinforce this, a method of mixing thermoplastic synthetic fibers such as nylon, acetate, polyester, etc., and strengthening it by heat treatment, and immersing the adhesive in the mat-shaped one There is a reinforcing method in which the fibers are dried or heat-treated after being sprayed or sprayed to bond the fibers to each other. In addition, by coating the surface of fibers mainly composed of cellulose or the like with carbonates, borates, or ammonium salts in advance, gases such as carbon dioxide, water vapor, and ammonia are released when the nonwoven fabric 21 is burned by fire or heated. Then, a foam may be generated on the surface to make the fiber flame-retardant. Such a material of the nonwoven fabric 21 is cut into a predetermined size by being colored or forming a pattern such as a character or a figure and used as an indicator, but can also be used as a material of the filter body 22. .

In this embodiment, for example, one side is 4
The air-permeable nonwoven fabric 21 cut into square pieces having a length of about 15 cm is colored in a color different from that of the filter body 22. Then, the nonwoven fabric 21 formed as described above was used as an indicator and bonded to the center of the back surface of the translucent filter body 22 via an adhesive as shown in FIG. Here, a dye having high solubility in edible oil or the like may be attached to the nonwoven fabric 21, and this may be used as a stain sensor that changes color by absorbing a predetermined amount of oil smoke or dust. As shown in FIG. 4, the filter support 24 disposed at the vent of the ventilation fan 20 includes a beam member 27 for fixing the replacement filter 23, a side wall portion 28 fitted to the frame 26, and a side wall portion on the back surface side. And a stopper 29 for locking the ends of the plurality of replacement filters 23 arranged on the ventilation fan 28 as shown by arrows in FIG.
The air sucked into the air vent of the beam member 27 or the side wall 2
The air flows through a space 28a formed between the air passages 8, and the flow is minimized. The replacement filter 2 composed of the nonwoven fabric 21 and the filter body 22
3 is placed on the filter support 24, and the portion of the filter body 22 protruding from the filter support 24 is folded back, and this folded portion is a stopper provided on the back side of the filter support 24 shown in FIG. Poke into 29 and fix. The tip of the stopper 29 is a sharp piercing portion, and the piercing portion has a hook-shaped stopper preventing portion of the filter body 22.

The peripheral ends such as the four corners of the filter body 22 and other predetermined portions may be fixed to the filter support 24 using an adhesive, a magnet, or the like. Thus, the filter support 24 on which the replacement filter 23 is mounted is arranged at the front of the frame 26 having the ventilation fan 25, and the frame 26
Of the filter support 24 and the mounting plate 31 on the side of the filter support 24 via a spring 32 so that the ventilation fan 20 can be used. In this initial state, the nonwoven fabric 21 disposed on the back side through the filter body 22 can be clearly identified. However, as the use period of the ventilation fan 20 becomes longer, dust, oily smoke, and the like are captured and adhered to the filter main body 22, and the filter main body 22 and the nonwoven fabric 21 change color according to the amount of adhesion. It becomes difficult to discriminate between the two, and it becomes possible to grasp the replacement time of the replacement filter 23.
In this manner, the filter support 24 can be removed from the ventilation fan 20 and replaced with a new replacement filter, and the exhaust state using the ventilation fan 20 can be favorably maintained without clogging the replacement filter 23.

The embodiments of the present invention have been described above.
The present invention is not limited to these embodiments, and all changes in conditions without departing from the gist are within the scope of the present invention. For example, in the present embodiment, the shape of the indicator arranged on the filter main body is a simple figure such as a square, but the indicator is formed so as to represent a character or a character string, and furthermore, a function of discriminability as an indicator is provided. Can be increased. Furthermore, by attaching a temperature display sticker that changes color depending on the temperature to the filter body as an indicator, in addition to the above-described function of determining the contamination of the filter body, a function of monitoring the temperature of the use environment can be added. Safety against a fire such as a ventilation fan, a range hood or the like to which the replacement filter is attached is also enhanced.

[0021]

According to the method for judging replacement of a vent replacement filter according to any one of claims 1 to 6 and the method for determining replacement timing of a vent replacement filter according to claim 7,
Since an indicator whose visual distinction changes according to the use state is provided, it is possible to determine the degree of contamination of the filter main body without removing the filter from the vent hole by changing the distinction such as the degree of discoloration of the indicator. The filter can be reliably replaced at the time when the filter body starts to be clogged. Therefore,
The exhaust efficiency of the air exhausted from the vent can be favorably maintained without impairing the air permeability of the replacement filter. Especially,
In the replacement filter of the vent according to claim 2, the filter body is translucent, and the indicator is attached to the back surface side of the filter body and is made of a small piece of a color different from the color of the filter body. The light transmittance, color, and the like of the filter body change due to the adsorption of dirt, and the replacement time can be easily determined based on a change in the visual identification of the indicator attached to the back surface side. In the filter for replacing a vent according to the third aspect, the indicator is attached to the front surface side of the filter main body, and is constituted by a dirt sensor that changes color by absorbing a predetermined amount of oily smoke or dust. It is less affected by the main body, so that the discriminability when dirt adheres can be changed very sharply, and the replacement time of the replacement filter can be more accurately known.

According to a fourth aspect of the present invention, the filter body is translucent, and the indicator is attached to the back side of the filter body and changes color by absorbing a predetermined amount of soot or dust. Because of the dirt sensor, the change in the discriminability of the indicator by visual observation can be adjusted according to the type and thickness of the filter main body, and the replacement time of the replacement filter can be more accurately known. In the vent replacement filter according to claim 5, the indicator is attached to the filter main body via a sheet fastener, an adhesive, or a transparent double-sided tape, so that the indicator can be easily viewed when set on the filter main body. Can be easily installed. When a planar fastener is used, its position can be changed as needed, and anyone can easily set the indicator to an appropriate position. In the filter for replacing a vent according to the sixth aspect, the filter body is translucent, and the indicator is formed of a printing portion printed on the back side of the filter body in a color different from the color of the filter body. The display area of the indicator, which can be observed through the filter body from the front side, can be increased as necessary, or displayed by characters or figures that can be easily recognized by anyone, and the replacement filter can be replaced. The timing can be determined more quickly and appropriately.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a range hood to which a method for determining a replacement time of a filter for replacing a vent according to a first embodiment of the present invention is applied.

FIGS. 2A and 2B are explanatory views showing Modification Examples 1 and 2 of a replacement filter in the same range hood.

FIGS. 3 (a) and 3 (b) are a perspective view and an explanatory view, respectively, of a ventilation fan to which a method for determining a replacement time of a filter for replacing a vent according to a second embodiment of the present invention is applied.

FIG. 4 is an explanatory view of a method of mounting a replacement filter on a filter support.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Range hood 11 Cooking table 12 Range hood main body 13 Air vent 14 Planar fastener (indicator) 14a Hook type hook 15 Filter main body 16 Replacement filter 16a Magnet holder 16b Replacement filter 16c Replacement filter 17 Fan 17a Frame 18 Nonwoven fabric ( Indicator) 19 Printing part (indicator) 20 Ventilation fan 21 Non-woven fabric (indicator) 22 Filter body 23 Replacement filter 24 Filter support 25 Ventilation fan 26 Frame 27 Beam member 28 Side wall 28a Space 29 Stopper 30 Locking member 31 Mounting Plate 32 Spring

Claims (7)

[Claims] 1. A replacement filter that is replaceably attached to a vent of a ventilation fan, a range hood, or the like, wherein an indicator whose visual distinction is changed at a predetermined position of a filter body according to a use state is provided. A replacement filter for a vent hole, characterized in that: 2. The ventilation according to claim 1, wherein the filter main body is translucent, and the indicator is attached to a back side of the filter main body, and is made of a small piece of a color different from the color of the filter main body. Replacement filter for mouth. 3. The filter according to claim 1, wherein the indicator comprises a dirt sensor attached to a front surface side of the filter body and discolored by absorbing a predetermined amount of oily smoke or dust. 4. The filter body according to claim 1, wherein the filter body is translucent, and the indicator comprises a dirt sensor attached to a back side of the filter body and discolored by absorbing a predetermined amount of oily smoke or dust. A replacement filter for the described vent. 5. The filter according to claim 1, wherein the indicator is attached to the filter body via a sheet fastener, an adhesive, or a transparent double-sided tape. 6. The ventilation according to claim 1, wherein the filter main body is translucent, and the indicator comprises a printing portion printed on a back surface side of the filter main body in a color different from a color of the filter main body. Replacement filter for mouth. 7. An indicator for detecting dirt on the filter main body is disposed on the front or back surface of the filter main body attached to a vent of a ventilation fan or a range hood, and the filter main body is contaminated by visual color change of the indicator. A method for determining a replacement time of a filter for replacing a vent hole, characterized in that: