JP2003004271A - Filter for ventilator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a low cost filter for a ventilator capable of freely changing a shape of a high performance having directivity in ventilation and to prevent a mounting mistake of a filter as well. SOLUTION: A flexible thin filter medium having a rough tissue at a front side and a dense tissue at a rear side is formed in a bellowlike ring in which ridges and troughs are alternatively continued in a direction of a centerline so that its inside is rough and its outside is dense and flexible frames are mounted at both ends of the filter material in the direction of the centerline. An extendibility and a sealability may be imparted to the frame. Further, a display element for displaying a direction of the rough and dense state of the tissue of the filter medium may be imparted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a field of a filter for a ventilation fan that ventilates a room by supplying air into the room from outside the room or exhausting air from the room to the outside. .

[0002]

2. Description of the Related Art Ventilation fans that ventilate a room by exhausting or supplying air are often installed in a mounting hole formed in a partition wall that separates the inside and the outside of the room, and the inside of the body. It is composed of a grill attached to cover the end. An air passage is formed in the main body, and an air blower for air supply or exhaust is attached to this air passage. Further, the grill is mounted on the room side of the main body and constitutes a substantial blow-out portion or suction portion of the ventilation fan.

Various devices have been conventionally devised for such a ventilation fan having a basic structure. For example, Jikkou Sho 6
As disclosed in Japanese Laid-Open Patent Publication No. 2-16584, a ventilation fan for a kitchen is provided with a filter for collecting mist-like oil droplets contained in oil smoke between the front of the grill and between the grill and the main body. Many. This filter is to prevent the inside of the ventilation fan from being soiled with oil, and is not to clean the exhausted air.

Some ventilating fans for supplying outside air (often outdoors) to a room are also equipped with filters. The filter in this case is intended to improve the cleanliness of the air supplied to the room and has a function of removing dust. The filter for the ventilation fan for such air supply is also installed in the same manner as the filter for the ventilation fan for the kitchen. That is, a sheet-like filter is replaceably attached to the outlet end of the ventilation passage of the main body or the inside of the grill. When the grill is provided with a plurality of outlets having different outlet directions, it is convenient to attach a filter to the open end of the main body so that the air blown out from all the outlets can be purified.

[0005]

As described above, various innovations have been made in the ventilating fan in the past.
The demand for cleaning the air supplied to the room has become stronger than before. That is, the outside air is not always fresh, and the air in the room loses comfort even when the outside air is supplied to the room as it is at the time of pollen scattering, when there is a lot of dust, or at a place.

The present invention is to develop a filter for a ventilation fan which can change the shape of a ventilation fan at a low cost and with a high performance, to prevent the filter for the ventilation fan from being installed incorrectly, and to improve its usability and function. It is also aimed to promote the improvement of the ventilation fan and to obtain a ventilation fan having outlets in multiple directions using the filter for the ventilation fan.

[0007]

Means for Solving the Problems To achieve the above object, the invention of claim 1 provides a flexible thin filter material having a rough structure on the front side and a dense structure on the back side. Means alternately formed in the direction of the center line to form a bellows ring having a rough inner side and a dense outer side, and flexible frames are attached to both ends in the center line direction of the filter. To adopt.

In order to achieve the above object, the invention of claim 2 is a flexible thin filter material having a rough texture on the front side and a dense texture on the back side. The bellows-shaped ring that is continuous in the direction and has a rough outer side and a dense inner side is formed, and a flexible frame is attached to both ends in the center line direction of this filter material.

In order to achieve the above object, the invention of claim 3 employs a means for imparting stretchability and airtightness to the frame in the means according to claim 1 or 2.

In order to achieve the above-mentioned object, the invention of claim 4 is a thin thin flexible material having a rough texture on the front side and a dense texture on the back side. To form a bellows ring that is continuous in the direction and coarse on the outside and dense on the inside, and attach flexible frames to both ends in the centerline direction of this filter,
A means is adopted that is configured so that the whole is turned over and the inside and outside can be inverted.

In order to achieve the above-mentioned object, the invention of claim 5 provides means for providing a display element indicating the direction of coarse and dense of the structure of the filter material in the means according to any one of claims 1 to 4. adopt.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a side view showing a ventilation fan according to the present invention in a mounted state, and FIG. 2 is an exploded perspective view of the grill. The ventilation fan covers a main body 4 mounted on a mounting hole 3 formed in a partition wall 2 (including a side wall and a ceiling wall) that separates the inside and the outside of the room 1, and a state in which the end of the main body 4 on the room 1 side is covered. And a grill 5 mounted on the room 1 side. In FIG. 1, the mounting hole 3 is composed of the pipe 6 inserted into the partition wall 2, but it may be composed of a frame body or the like.

The main body 4 incorporates a blower 8 for sucking the air outside the room 1 into a plastic cylindrical portion 7 forming the ventilation passage and forming a supply air flow blowing out from the opening end of the cylindrical portion 7 on the room 1 side. With this structure, the tube portion 7 is inserted into the pipe 6 by the elastic supporting function of the spring 9 provided on the outer periphery of the tube portion 7. As a mounting means of the main body 4, a flange portion 10 described later may be screwed to the partition wall 2. A flange portion 10 extending in the radial direction and extending along the partition wall 2 is integrally formed at one end (end on the room 1 side) of the tubular portion 7 of the main body 4. The flange portion 10 is formed in a substantially square shape in plan view, and a rising portion 11 whose end face is in contact with the wall surface of the partition wall 2 on the side of the chamber 1 is formed all around the outer periphery of the flange portion 10.

As shown in FIG. 2, the grill 5 is made of plastic as a bottomed substantially square prismatic container having a peripheral side 19 which can be fitted onto the flange portion 10 of the main body 4 and a front surface portion 20. The height of the circumferential side 19 is formed to such an extent that the front surface portion 20 is separated from the front surface of the flange portion 10 in a state of being fitted to the flange portion 10.
Actually, if the circumference side 19 is too high, the protrusion to the room 1 side becomes large and the aesthetics of the room 1 is impaired. Therefore, the circumference side 19 is made low as long as the ventilation function is not hindered. On the circumferential side 19 composed of four sides of the grill 5, a plurality of air outlets 22 having different blowing directions, which are formed by a plurality of slits 21 which are long in a direction perpendicular to the standing direction of the circumferential side 19, are formed on each side except one side. Has been formed. Each outlet 22
Are separated from each other by the corners of the grill 5. The slits 21 forming the blowout ports 22 are arranged at equal intervals from the end surface on the circumferential side 19 toward the front surface from the position retracted by the height of the rising portion 11 of the flange portion 10 of the main body 4. The illustrated one has three arrays.

A slide shutter 23 is attached to each of the outlets 22 on the back side thereof. The two slide shutters 23 are omitted in FIG. Each slide shutter 23 has slits 24 arranged in the same manner as the outlets 22, and is attached by a knob 25 so as to be slidable in the standing direction along the back surface of the circumferential side 19.

A plurality of ribs 32 are formed on the back surface of the front surface portion 20 of the grill 5 on the inner side of the ribs 29. These ribs 32 are formed at four corners of the front surface portion 20 and in the middle thereof, and a line connecting the outer surfaces of the ribs 32 is a quadrangle surrounding the outer periphery of the opening end of the main body 4 on the room 1 side. . A band-shaped filter 33 is fitted and mounted between the rib 32 and the rib 29 that holds the slide shutter 23, so that the air outlets 22 are collectively covered so as to allow ventilation.

When it is mounted at a relatively high place on the side wall of the room 1 as shown in FIG. 1, the surface without the air outlet 22 should face downward so that the user is not directly exposed to the air supply. it can. Further, in a mounting place where there is a wall surface or an obstacle to ventilation in the immediate vicinity such as a corner portion of the room 1, the surface without the air outlet 22 may be directed in the direction of the obstacle. However, since the outlets 22 of the grill 5 can be fully closed individually by operating the slide shutter 23, consideration of the mounting direction of the grill 5 is not important. In this sense, there is no problem even if the grilles 5 are provided with the air outlets 22 on all surfaces.

When power is supplied to the blower, the air outside the room 1 can be blown out from the outlets 22 of the grill 5 in three directions to supply air. The air blown from the opening end of the main body 4 on the room 1 side is dust-removed by the filter 33 attached to the grill 5 surrounding the entire circumference of the opening end, and is supplied to the room 1 as clean air from the air outlet 22. To be done.

The shape of the flange portion 10 can be round, and accordingly, the grill 5 can also be round. It is also possible to open and close the air outlet by sliding the slide shutter 23 in a direction perpendicular to that shown in the figure.

As shown in FIG. 3, the filter 33 for the ventilation fan comprises a flexible and thin porous fibrous sheet 40 having different tissue densities on the front and back sides, and as shown in FIG. 4, peaks and valleys are alternately continuous. It is formed by a filter 41 having a large surface area and formed in a bellows shape. This filtering material 41 has a directionality in the ventilation direction and has a high-performance filtering function by allowing the tissue to pass air from the coarse direction to the dense direction, but it is also possible to pass air in the opposite direction. Does not function. The filter 33 shown in FIG. 5 has a structure in which this filter 41 is formed into a band shape in which peaks and valleys run in the width direction, and frames 42 made of polyethylene having elasticity and airtightness are attached to both ends in the longitudinal direction. .

When the grill 5 is attached, the frame 42 of the filter 33 is brought into close contact with the flange portion 10 of the main body 4 and the rear surface of the grill 5 to maintain the airtightness of the portion. Therefore, an airtight holding member such as a sealing material or an airtight holding structure is unnecessary. Since the filter 33 has a direction of ventilation and it is difficult to distinguish between the front and back sides at a glance, a display 43 indicating the direction of ventilation is provided so that the filter 33 is not worn by mistake. The indication 43 indicating this directionality may be provided by adding an arrow to the frame 42 as shown in FIG. 5, or by color-coding the front and back of the filter 41. As shown in FIG. 6, the filter 33 attached to the ventilation fan bends at the corners of the grill 5 that separate the air outlets 22, and the inside of the filter 41 at the bent portion has mountains closely contacting each other. Although the breathability is lower than the part,
Even if the air permeability of this portion is low, there is no problem because it is not a portion corresponding to the air outlet 22, and it is rather convenient to use this to provide a reinforcing structure between the air outlets 22 of the grill 5.

The filter 33 shown in FIG. 7 has the filter material 41.
A frame 4 made of polyethylene having stretchability and airtightness at both ends in the longitudinal direction by molding a strip into a shape in which peaks and valleys run in the width direction.
It is a simple structure in which 2 is mounted and the edges are joined together to form a ring. That is, the filter 33 of FIG. 5 is previously closed loop. Since the entire filter 33 is flexible, flexible and elastic in the radial direction, it can be freely changed into a square shape or a round shape depending on the structure to be supported.

The filter 33 also has a direction of ventilation, and it is difficult to distinguish the ventilation direction at first glance. However, since the filter 33 has an annular shape, the inside and the outside are defined and the mounting direction cannot be mistaken. Since there are few, it is easier to use than strip-shaped ones. For confirmation, a display 43 indicating the ventilation direction is provided. When flowing air from the inside to the outside, that is, when using it for a ventilation fan for exhaust, make it a ring with a coarse inside and a dense outside, and when using it for flowing air from the outside to the inside, the inside is dense and the outside is Use a rough ring. However, in reality, the whole is flexible and stretchable, so it can be turned upside down like a Mobius strip and inverted inside and outside, and since the display 43 also corresponds, the inside is rough and the outside is dense. The resulting filter 33 can be used as it is as a filter 33 that is turned over to have a dense inner side and a rough outer side.

[0024]

According to the invention of claim 1, there is provided a filter for a ventilation fan which has directivity in the ventilation direction, is less likely to cause an error in the mounting direction, is low in cost, has high performance, is easy to use, and has a high degree of freedom in its shape. .

According to the second aspect of the present invention, there is provided a filter for a ventilation fan which has directivity in the ventilation direction, is less likely to cause an error in the mounting direction, is low in cost, has high performance, is easy to use, and has a high degree of freedom in shape.

According to the invention of claim 3, an airtight holding function can be provided together with the effect according to claim 1 or 2.

According to the invention of claim 4, there is provided a filter for a ventilation fan which has a directivity in the ventilation direction, is less likely to cause a mistake in the mounting direction, has a high performance at a low cost, is easy to use, and has a high degree of freedom in its shape. You can easily deal with the case where the directions are opposite.

According to the fifth aspect of the present invention, it is possible to reliably prevent a mounting error together with the effect according to any one of the first to fourth aspects.

[Brief description of drawings]

FIG. 1 is a side view showing a ventilation fan of an embodiment in a mounted state.

2 is an exploded perspective view of the grill of the ventilation fan of FIG. 1. FIG.

FIG. 3 is an enlarged view showing the structure of the filter material of the filter according to the embodiment.

FIG. 4 is a partial enlarged view showing the filter material of the filter according to the embodiment.

FIG. 5 is a perspective view showing a filter according to the embodiment.

FIG. 6 is a rear view of the grill showing a state in which the filter of the embodiment is attached to the ventilation fan.

FIG. 7 is a plan view showing a filter of another aspect of the embodiment.

[Explanation of symbols]

1 room 2 partitions 3 mounting holes 4 body 5 grill 8 blower 10 Flange part 22 Air outlet (ventilation opening) 23 Slide shutter 29 ribs 32 ribs 33 filters 41 Filter material 42 frames 43 views

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kaneyoshi Oshima             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. F term (reference) 4D058 JA13 JB14 JB25 JB29 KA03                       KA27 KA30 KC06 KC33 LA01                       LA05 SA01

Claims (5)

[Claims] 1. A flexible thin filter material having a rough front structure and a dense back structure, in which peaks and valleys are alternately continuous in the direction of the center line, and the inside is coarse and the outside is dense. A filter for a ventilation fan, characterized in that it is formed into a bellows-shaped ring, and flexible frames are attached to both ends in the center line direction of this filter. 2. A thin, flexible filter material having a rough structure on the front side and a dense structure on the back side is formed by alternately arranging peaks and troughs in the direction of the center line, with the outer side being coarse and the inner side being dense. A filter for a ventilation fan, characterized in that it is formed into a bellows-shaped ring, and flexible frames are attached to both ends in the center line direction of this filter. 3. A filter for a ventilation fan according to claim 1 or 2, wherein the frame has elasticity and airtightness. 4. A thin thin flexible material having a rough texture on the front side and a dense texture on the back side is formed by alternately arranging peaks and troughs in the direction of the center line, with the outer side being coarse and the inner side being dense. A filter for a ventilation fan, characterized in that it is formed into a bellows ring, and flexible frames are attached to both ends in the center line direction of the filter so that the whole can be turned upside down and inverted. 5. A filter for a ventilation fan according to any one of claims 1 to 4, wherein a display element indicating the direction of density of the tissue of the filter is provided. .