JP2012202272A - Filter for electric fan and support therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter for an electric fan that can clean indoor air by catching pollen, fine dust and the like sucked into a blade guard not only from a back part of the blade guard but also from a vent hole or the like in a casing of a motor part, and to provide a support therefor.SOLUTION: A back part of a blade guard and a motor part are covered with unwoven fabric as a whole and such a state is kept by a stopper, thereby pollen, fine dust and the like sucked into the blade guard not only from the back part of the blade guard but also from a vent hole of the moor part can be caught. Therefore, rotary blades and the blade guard of an electric fan can be prevented from being made dirty by fine dust or the like. Further, the electric fan can also be utilized as an indoor dust collector.

Description

  The present invention relates to a fan filter and a support thereof, and more particularly to a fan filter and a support thereof for collecting pollen, fine dust, dust and the like in the air sucked from the back of the fan.

In recent years, for example, as in Patent Document 1, by covering only the back of the blade guard that covers the rotating blades of the fan from the outside, pollen, fine dust and dust floating in the room can be removed during use of the fan. Fan filters have been developed that collect and prevent contamination of the rotating blades and blade guards.
JP 2008-63948 A

  However, in the fan filter of Patent Document 1, the portion of the fan that is covered with the nonwoven fabric is only the back surface portion of the blade guard that covers the rotating blades. Therefore, it is not possible to block various openings such as the air intake holes formed in the casing of the motor unit arranged behind the back surface part, and the indoor air containing pollen sucked into the casing from the ventilation holes, It passed through the insertion hole of the motor shaft formed in the tip wall of the casing and was blown into the blade guard. Thereby, the effect of filtering by the filter for ventilation fans was insufficient.

Therefore, as a result of intensive research, the inventor has found that not only the back part of the fan blade guard of the electric fan but also the motor part that rotates the rotary blade is covered with a nonwoven fabric, so that all the above-mentioned problems can be solved. The present invention has been completed.
This invention can collect pollen, fine dust and dust in the air that is sucked into the blade guard not only from the back surface of the blade guard but also from the opening of the casing of the motor unit. It aims at providing the filter for electric fans which can raise the cleanliness of indoor air, and its support body.

  The invention according to claim 1 is provided with a casing having a whole area of a rear face portion of the blade guard covering the rotating blades of the electric fan, and a rear side of the electric fan from the rear face portion, and having a suction hole. A non-woven fabric that covers the entire area of the motor unit that rotates the rotating blades, and a hook that is provided on the non-woven fabric and covers the entire area of the back surface of the blade guard and the entire area of the motor unit. It is a filter for electric fans provided with a stop.

The installation type of the electric fan in which the electric fan filter is used is arbitrary. For example, a floor-mounted type, a ceiling-suspended type, or a room-side-wall fixed type may be used.
The shape and diameter of the fan blade guard are arbitrary.
Further, in addition to the shape and size of the casing of the motor unit, the shape, size, and formation position of the intake hole of the casing are also arbitrary.
The kind of nonwoven fabric is arbitrary. In addition to dust in the air, nonwoven fabrics having a basis weight capable of efficiently collecting pollen and the like are preferable.
Furthermore, the nonwoven fabric may be made of natural fibers such as cotton, hemp, and silk, or may be made of various synthetic resin fibers such as propylene resin fibers, polyester resin fibers, and polyethylene resin fibers. Further, the nonwoven fabric may be hardened with a synthetic resin while ensuring air permeability. In addition, a non-woven fabric made of metal such as aluminum or iron may be used, or a non-woven fabric made of glass fiber may be used.

The size of the nonwoven fabric is arbitrary. In short, it suffices if the entire area of the back surface of the blade guard and the entire area of the motor unit can be covered simultaneously from the outside. In addition, as for the size of a general household electric fan, the average diameter of the blade guard is 30 to 40 cm, and the average diameter of the motor unit is 8 to 12 cm.
The nonwoven fabric may be flat or draped. Moreover, you may print arbitrary patterns, arbitrary figures, arbitrary pictures etc. on a nonwoven fabric by the printing method, for example.

The location of the blade guard covered by the nonwoven fabric may be not only the entire area of the back surface portion but also the entire area of the back surface portion and the front surface portion (the entire area or a part) of the blade guard. Further, when the filter is used, the portion of the nonwoven fabric that covers the motor unit may contact the casing of the motor unit. However, it is preferable to use, for example, a latching body without using the filter.
Moreover, you may provide deodorizing property and antibacterial property to a nonwoven fabric. Examples of the substance that imparts deodorizing properties include powdered activated carbon. Furthermore, examples of the substance imparting antibacterial properties include titanium oxide. These may be included in the fibers of the non-woven fabric in advance, or may be attached to a predetermined surface of the non-woven fabric by a coating method or the like after manufacturing the non-woven fabric, or impregnated into each fiber from this predetermined surface.
The type of the hanging body is arbitrary. For example, various types of cords and bands may be used, and planar fasteners in which a large number of hook-shaped protrusions (male planar fasteners) are implanted on one or both sides of the cloth may be used. In addition, hooks, hooks, magnets, etc. may be adopted.

  According to a second aspect of the present invention, the nonwoven fabric is a rectangular shape, and the hooking body is fixed to the pair of long side portions of the nonwoven fabric over the entire length thereof except for the both ends. The fan filter according to claim 1, wherein the fan filter has a pair of elastic bands.

The material of the elastic band is arbitrary. For example, a metal band having elasticity such as a rubber band (rubber string), a synthetic resin band having elasticity, and a coil spring (made of stainless steel or the like) may be used. Among these, the rubber band may be flat rubber or round rubber. In the case of flat rubber, the elongation is usually 2.5 times.
An elastic band is good also considering only a part of the length direction as an elastic body. However, normally, the entire length of the band is made of an elastic body.
A method of fixing the elastic band to the nonwoven fabric is arbitrary. For example, an adhesive having elasticity such as sewing and a rubber adhesive may be used. Of the elastic band, the length of the adhering portion to the nonwoven fabric needs to be substantially the same as or shorter than the length of the long side portion of the nonwoven fabric. When shortened, gathers appear on the long side of the nonwoven fabric.
Both ends of the elastic band that are not fixed to the nonwoven fabric can be bound portions that protrude from the outer edge of the nonwoven fabric. The lengths of both ends of the elastic band are arbitrary. However, the length (for example, 5-15 cm) which can bind corresponding things is required.

  The invention according to claim 3 is the fan filter according to claim 1 or 2, wherein the nonwoven fabric has a surface coated with an adhesive.

As the pressure-sensitive adhesive, for example, an acrylic pressure-sensitive adhesive can be employed.
The portion of the nonwoven fabric to which the adhesive is applied is arbitrary. For example, the whole surface of the nonwoven fabric or a part thereof may be used.
As a method for applying the pressure-sensitive adhesive, for example, spray coating or brush coating can be employed.

  According to a fourth aspect of the present invention, there is provided a blade guard that is detachably fixed to a motor unit that rotates the rotating blades of the electric fan, and that is provided on the entire motor unit and the motor unit and covers the rotating blades. It is a fan filter support that holds a non-woven fabric of a fan filter that is hooked on the fan so as to cover the entire area of the back surface portion in a non-contact state with the motor unit.

The material of the support is arbitrary. For example, various synthetic resins (polyethylene, polypropylene, polystyrene, polyvinyl chloride, polycarbonate, etc.), various metals (iron, stainless steel, trunk, bronze, etc.), various trees (cedar, cypress, etc.), and various ceramics are used. can do.
The shape of the support is arbitrary. For example, it is possible to adopt an elongated plate member that is connected in a U-shape when viewed from the side.
The support may be connected to the non-woven fabric inseparably or separately from the non-woven fabric.
As the position of the motor part to which the support body is detachably fixed, for example, the base part of the casing, the intermediate part in the length direction, the front part, etc. can be adopted.
As what fixes a support body to a motor part so that attachment or detachment is possible, a double-sided tape, a planar fastener, a magnet, etc. are employable, for example.

According to the first aspect of the invention, not only the back part of the fan blade guard of the electric fan but also the entire motor part for rotating the rotating blades is covered with the nonwoven fabric, and such a coated state is covered with the nonwoven fabric by the hanging body. Hold by hanging on the fan. As a result, it is possible to collect pollen, fine dust and dust in the air that is sucked into the blade guard not only from the back surface of the blade guard but also through various openings such as a vent hole in the casing of the motor unit. it can.
As a result, it is possible to prevent the rotating blades and blade guards of the fan from being contaminated due to fine dust and the like. Moreover, since the collection rate of pollen and fine dust is increased as compared with the conventional products, the cleanliness of the indoor air can be increased by using a fan. That is, if this electric fan filter is attached to the electric fan, the electric fan can be used not only for the original purpose of obtaining coolness but also as an indoor dust collector.

In particular, according to the invention described in claim 2, the pair of long sides of the nonwoven fabric has a portion (intermediate portion in the length direction) excluding both ends of the pair of elastic bands over the entire length. It is fixed. Therefore, when using the fan filter, for example, both ends of one elastic band are bound to the blade guard, and both ends of the other elastic band are bound to the casing.
Specifically, while extending one elastic band, one long side portion of the nonwoven fabric is applied to the entire area of the large-diameter portion of the blade guard, and both end portions (binding portions) of the corresponding elastic band are connected. Thereafter, the other long side portion of the nonwoven fabric is extended so as to cover the entire area of the motor portion with the remaining portion of the nonwoven fabric while extending the other elastic band fixed thereto, and both ends of the corresponding elastic band are connected to each other. .
Thereby, the coating | coated state of the back surface part of a blade guard and a casing by a nonwoven fabric can be hold | maintained easily. In addition, since the fan filter has a small number of parts and a simple structure, the cost of the fan filter can be reduced.

  Further, according to the invention described in claim 3, since the pressure-sensitive adhesive is applied to the surface of the nonwoven fabric, pollen, fine dust and dust collected on the nonwoven fabric can be adhered to the surface of the nonwoven fabric. This makes it difficult for pollen and the like to re-scatter from the nonwoven fabric when the fan is stopped or when the fan filter is replaced.

  Furthermore, according to the invention described in claim 4, when the motor part is covered with a part of the nonwoven fabric, the nonwoven fabric is held in the motor part in a non-contact state by using the support body fixed to the motor part. Thus, since the nonwoven fabric is held in a non-contact state on the motor unit, it is possible to prevent the nonwoven fabric from being deteriorated or damaged due to the heat of the motor unit in use.

It is a perspective view from the front direction which shows the use condition of the filter for electric fans which concerns on Example 1 of this invention, and its support body. It is an expanded view of the nonwoven fabric used for the filter for electric fans which concerns on Example 1 of this invention. It is a perspective view of the filter for electric fans concerning Example 1 of this invention. It is a perspective view of the support body of the filter for electric fans which concerns on Example 1 of this invention. It is a perspective view from the back direction which shows the use condition of the filter for electric fans which concerns on Example 1 of this invention, and its support body.

  Examples of the present invention will be specifically described below.

  1 to 5, reference numeral 10 denotes an electric fan filter according to Embodiment 1 of the present invention. The fan filter 10 is a cylindrical container that is disposed behind the rear face 14B of the blade guard 14 that covers the rotating blades 13 of the electric fan 11 and the rear face 14B, and has a plurality of intake holes 30a formed on the front end face. Long side portions corresponding to the rectangular non-woven fabric 15 and the long side portions 15a and 15b of the non-woven fabric 15 in plan view, which covers the entire area of the motor unit 12 that has the shape of the casing 30 and rotates the rotary blade 13 A rubber band of a pair of flat rubber cords (hanging bodies) which are fixed over substantially the entire length of 15a and 15b and hook the nonwoven fabric 15 on the fan 11 in a state where the back surface portion 14B of the blade guard 14 and the entire area of the motor portion 12 are covered. , Elastic bands) 16, 17, and a nonwoven fabric support member (support) 31 that is detachably fixed to the motor unit 12 and holds the nonwoven fabric 15 in a non-contact state on the motor unit 12. It is provided.

Hereinafter, these components will be described in detail.
The electric fan 11 includes an operation table, a support column protruding from the center of the operation table so that the height can be adjusted, the motor unit 12 pivotally supported at the tip of the support column, and the rotation fixed to the output shaft of the motor unit 12. It has the blade | wing 13 and the blade | wing guard 14 fixed to the opening part of the former side of the motor part 12. FIG.
The non-woven fabric 15 can be easily obtained by sequentially cutting a strip-shaped non-woven fabric having a width (short side) of about 25 cm derived from the non-woven fabric roll every length (long side) of about 152 cm (FIG. 2). If it cuts to this magnitude | size, the obtained nonwoven fabric 15 can coat | cover the whole area | region of the back part 14B of the blade guard 14 with a diameter of 35 cm, and the whole motor part 12 from the outside. Thereby, the number of parts is small and the nonwoven fabric 15 can be manufactured simply and with a high yield. As a result, the cost of the fan filter 10 can be reduced.
The nonwoven fabric 15 is obtained by bonding polyester resin fibers having a fiber diameter of about 6 denier with a predetermined binder. Basis weight is 30 g / ^{m 2,} an apparent thickness 15～2.5Mm, filter pressure drop is 0.65mmH ₂ O.

A portion excluding both end portions of the rubber bands 16 and 17 having a length of 56 cm is sewn across the entire area of both the long side portions 15a and 15b of the nonwoven fabric 15 (FIG. 3). Since the length of the sewn portion (fixed portion) of the rubber bands 16, 17 to the nonwoven fabric 15 is 56cm with respect to the length of 125cm of the long side portions 15a, 15b, the rubber bands 16, 17 are sewn. A gather is formed in the long side portions 15a and 15b. Both end portions of the rubber bands 16 and 17 protrude outward from the corresponding short side of the nonwoven fabric 15 by about 12 cm, respectively, and both protruding portions constitute the binding portion 18.
The motor part 12 is housed in a casing 30 having a cylindrical container shape with an open base part pivotally supported on a support column of the electric fan 11 and a large number of intake holes 30a formed on the front end surface. And a motor (not shown). An output shaft (rotary shaft) of the motor protrudes from the opening of the casing 30 toward the front of the electric fan 11, and a rotating blade is fixed to the protruding portion.
The blade guard 14 is configured to be detachably divided from a front surface portion 14A and a back surface portion 14B, and the front surface portion 14A and the back surface portion 14B are configured from a frame member having a plurality of spokes.

Hereinafter, the nonwoven fabric support member 31 will be described in detail with reference to FIG.
The nonwoven fabric support member 31 has as its main body a support frame 32 made of a strip-shaped plastic sheet reinforced by being folded in half at the intermediate portion in the width direction. In addition, three pin holes 32 a are formed at constant pitches at both end portions in the length direction of the support frame 32, intermediate portions in the length direction, and both side portions in the length direction of the support frame 32. Among these, the intermediate portions of the arm plate 33 made of a long and thin strip-shaped plastic sheet are pivotally supported by the intermediate pin holes 23 a via the split pins 34. Thus, each arm plate 33 is rotatable about the split pin 34. Each arm plate 33 is made of a plastic sheet. Therefore, the remaining portions excluding the respective shaft support portions can be elastically deformed in directions away from each other. Furthermore, a double-sided tape 35 for adhering the nonwoven fabric support member 31 to the motor unit 12 is fixed to the surface on the opposite side of the distal end portion of each pair of arm plates 33.
In addition, the fan filter 10 has a large number of planar fasteners (holding members) 19 in which a large number of hook-shaped protrusions are respectively planted on both sides of the cloth piece as equipment used in use.

Next, a method of using the fan filter 10 according to the first embodiment will be described.
As shown in FIGS. 1 and 5, when the fan filter 10 is used, first, a plastic bag and a ventilation fan filter are sequentially covered in two layers on a cardboard empty box or the like. Thereafter, the pressure-sensitive adhesive spray can prepared in advance is used to spray the pressure-sensitive adhesive over the entire surface of the ventilation fan filter 10.
Next, the nonwoven fabric support member 31 whose length direction is directed upward and downward is fixed to the distal end portion of the motor unit 12 using a pair of upper and lower arm plates 33. Specifically, using a double-sided tape 35, the upper pair of arm plates 33 are appropriately rotated, for example, and are attached to the upper portion of the front end portion of the casing 30. Further, the pair of lower arm plates 33 are appropriately rotated, for example, and are attached to the lower part of the front end portion of the casing 30 by the double-sided tape 35. Thereby, the nonwoven fabric support member 31 whose length direction of the support frame 32 is parallel to the front end surface of the casing 30 is fixed at a position separated from the front end surface of the casing 30.
Further, on the surface of each folded plate piece of the support frame 32, a total of 10 pieces are provided at both ends in the length direction, intermediate portions in the length direction, and near both ends in the length direction. A planar fastener 19 is attached. Furthermore, a total of six planar fasteners 19 are adhered to the outer peripheral surface of the large-diameter portion of the blade guard 14 every 60 ° in the circumferential direction.

  Next, the back surface part 14B of the blade guard 14 is covered with the nonwoven fabric 15 from the outside. At that time, one long side portion 15a of the nonwoven fabric 15 to which the rubber band 16 is fixed is applied to the entire area of the large-diameter portion of the blade guard 14 while the rubber band 16 is extended. It is held (temporarily fixed) by the planar fastener 19 and both the binding portions 18 are tied. Thereby, even with respect to the blade guard having a different size (diameter) from the blade guard 14 of the first embodiment, the long side portion 15a of the nonwoven fabric 15 is changed to the large diameter portion of the blade guard 14 by the elastic force of the rubber band 16. Can be closely attached over the entire circumference. As a result, a high dust collection effect can be obtained regardless of the size of the blade guard 14.

  Next, one end of the non-woven fabric 15 and the other end of the non-woven fabric 15 are attached to each other, and in this state, the entire non-woven fabric 15 is pulled in a substantially cylindrical shape to the rear of the fan 11, and the other long side 15b of the non-woven fabric 15 is pulled. Is temporarily fixed to the support frame 32 of the nonwoven fabric support member 31 through a number of planar fasteners 19. In this state, by extending the rubber band 16 and tying both the bundling portions 18, the entire area of the back surface portion 14 </ b> B of the blade guard 14 and the entire area of the motor portion 12 are covered with the fan filter 10.

  This collects pollen, fine dust and dust in the air that is sucked into the blade guard 14 not only from the back surface part 14B but also through various openings such as the air holes 30a provided in the casing 30 of the motor part 12. be able to. As a result, it is possible to prevent the rotating blade 13 and the blade guard 14 of the electric fan 11 from being contaminated due to fine dust and the like. In addition, since the collection rate of pollen, fine dust, and the like is higher than that of conventional products, the fan 11 can be used to increase the cleanliness of indoor air. That is, by installing the fan filter 10, the fan 11 can be used not only for the original purpose of obtaining coolness but also as an indoor dust collector.

  Moreover, in Example 1, since the part except each both ends of a pair of rubber bands 16 adheres to a pair of long side part 15a of the nonwoven fabric 15 over each full length, the back surface of the blade guard 14 by the nonwoven fabric 15 The covering state of the portion 14B and the casing 30 can be easily maintained. In addition, since the fan filter 10 has a small number of parts and a simple structure, the cost of the fan filter 10 can be reduced.

Furthermore, since the pressure-sensitive adhesive is applied to the surface of the nonwoven fabric 15, pollen, fine dust and dust collected on the nonwoven fabric 15 can be adhered to the surface of the nonwoven fabric 15. This makes it difficult for pollen and the like to re-scatter from the nonwoven fabric 15 when the operation of the fan 11 is stopped or when the fan filter 10 is replaced.
Furthermore, when the motor unit 12 is covered with a part of the nonwoven fabric 15, the nonwoven fabric support member 31 fixed to the motor unit 12 is used, and the nonwoven fabric 15 is held in the motor unit 12 in a non-contact state. Deterioration or damage of the nonwoven fabric 15 due to the heat of the motor unit 12 in use can be prevented.

  The fan filter of the present invention is useful, for example, as a simple air cleaning filter.

10 Fan filter,
11 Fan,
13 rotating blades,
14 Feather guard,
14B rear part,
15 Nonwoven fabric,
15a on one long side,
15b the other long side,
16, 17 Rubber band (elastic band, hook),
30 casing,
30a air intake hole,
31 Nonwoven fabric support member (support).

Claims (4)

The entire area of the back surface of the blade guard that covers the rotating blades of the electric fan, and the entire area of the motor portion that is disposed on the rear side of the electric fan from the back surface portion and has a casing with an intake hole and rotates the rotating blades A non-woven fabric for coating,
An electric fan filter comprising: a non-woven fabric provided on the non-woven fabric, and a latching body for hooking the non-woven fabric on the fan in a state of covering the entire back surface portion of the blade guard and the entire motor portion. The non-woven fabric is rectangular,
2. The fan filter according to claim 1, wherein each of the hooks has a pair of elastic bands that are fixed to the pair of long sides of the nonwoven fabric over the entire length thereof, except for both ends.   The fan filter according to claim 1 or 2, wherein the nonwoven fabric has a surface coated with an adhesive.   It is detachably fixed to the motor unit that rotates the rotating blades of the electric fan, and covers the entire region of the motor unit and the entire region of the back surface of the blade guard that is provided on the motor unit and covers the rotating blades. A fan filter support body that holds a non-woven fabric of a fan filter hooked on the fan in a non-contact state with the motor unit.

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