JP2011064117A - Filter for blower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter for a blower, preventing dust around an electric fan from being directly sucked to a fan driving section while in use and having excellent maintainability and design property. <P>SOLUTION: This filter 10 for the blower includes a filter member 11 removing suspended matter and a harmful component and a notched strut mounting portion 12 arranged around the strut portion 23 of the electric fan 20. The bag-like opening edge of the filter member is locked to the outer periphery of a fan guard 21 from the side of a back surface through a filter locking member 13 and bulges on the side of the back surface of the fan guard 21 to form a cleaned space having a predetermined volume including the fan driving section 22. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a blower filter mounted on a blower such as a fan, and more specifically, air that is detachably attached to a rear surface of a fan guard that covers a blower fan such as a fan and is sucked from the rear side of the blower. The present invention relates to a filter for an air blower for collecting fine dust, dust and the like therein.

2. Description of the Related Art Conventionally, a dust collection filter that performs air purification by being mounted on a fan guard of a domestic electric fan is known.
For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2005-240697) discloses an annular filter material and a frame that can cover the back part of a blade guard that guards the rotating blades of a fan as a dust collection filter that is attached to the back side of the fan. The filter material and the frame are divided into a plurality of portions in the circumferential direction. Here, a filter is attached to the rear part of the protective guard from which the wind enters the fan, so that dust and dirt can be absorbed and supplemented, and dirt can be removed by removing the filter.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 2007-239701) includes a bag-shaped filter body composed of a substantially cylindrical peripheral wall portion and a bottom portion as a dust collection filter to be attached to the front side of an electric fan. A filter to be attached to the front surface of the electric fan through a plurality of locking members provided along the edge is shown. This dust collecting filter collects floating dust from the air when the bag-like filter body bulges to the leeward side due to the air blowing action of the fan and air passes through the filter body. In this way, the fan which does not impair a cool feeling by providing a filter in the leeward side of a ventilation fan is obtained.

Japanese Patent Laid-Open No. 2005-240697 JP 2007-239701 A

However, in the conventional blower such as a fan, an air flow including dust or the like is blown directly or indirectly into a fan drive unit such as a motor that rotationally drives the blower fan during its operation. There was a problem of being a factor.
In particular, the filter of Patent Document 1 has a problem in that dust is difficult to remove because the filter is sewn so as to fit the diameter of the protective guard when the filter is attached to the rear side of the fan guard.
Moreover, in the thing of patent document 2, since the bulging filter is provided in the fan guard front surface, it does not look good and lacks in design, and dust and dust adhere to and accumulate on the back side of the fan. There has been a problem that frequent maintenance work is required to prevent this.
The present invention has been made in order to solve the above-described conventional problems. A high dust collection effect can be obtained regardless of conditions such as the size of the fan guard. An object of the present invention is to provide a blower filter that is excellent in maintainability without dust or the like being directly sucked, and that is easy to mount and excellent in design.

(1) The present invention made in order to solve the above-described conventional problems supports a fan drive unit that directly supports a blower fan that rotates in a fan guard formed in a mesh or lattice shape, and the fan drive unit. A blower device provided with a filter member that is attached to a blower device such as an electric fan having a support column and removes suspended matters and harmful components in the air that is taken in from the back side of the fan guard and blown to the front side thereof The filter member is formed in a substantially bag shape with a nonwoven fabric or a woven fabric, and has a notch-shaped column mounting portion arranged around the column unit of the blower, and the bag-shaped opening edge is The fan guard is locked from the back side through a filter locking member to the outer peripheral edge of the fan guard, and bulges to the back side of the fan guard so as to form a predetermined clean space including the fan driving unit. It is made.

(2) The present invention is the air blower filter according to (1), wherein the clean space is formed with an area ratio of the filter member and the back surface of the fan guard of 4 to 11.

(3) The present invention is the air blower filter according to (1) or (2), wherein the filter member is made of an impregnated and cured resin material, and the bag-like form is maintained in the driving state of the fan driving unit. It is also characterized by being configured as described above.

(4) The present invention is the air blower filter according to (1) or (2), wherein the filter member includes a frame portion made of a shape memory alloy, an aluminum alloy material, a bamboo material,
In order to maintain the bag-like form in the driving state of the fan driving unit,
The present invention is also characterized in that the substantially bag-shaped nonwoven fabric or woven fabric is covered with the frame portion.

(5) The present invention is the air blower filter according to any one of (1) to (4), wherein the filter member is impregnated with a functional resin material containing a fragrance component, an antibacterial component, an ion generating component, and an insecticide component. Another characteristic is that it is attached.

  According to the present invention, the filter member is formed in a substantially bag shape from a nonwoven fabric or a woven fabric, and swells to the back side of the fan guard and the fan drive unit to form a predetermined clean space. Regardless of this, a high dust collection effect can be obtained, and dust or the like is not directly sucked into the fan drive unit during use of the fan, so that it is possible to provide a blower filter excellent in maintainability. Furthermore, it can be set as the filter for ventilation apparatuses with the easy attachment and the favorable external appearance in use.

It is a perspective view which shows the mounting state to the electric fan of the filter for air blowers of Example 1. FIG. It is explanatory drawing which shows the usage condition of the filter for air blowers. It is principle explanatory drawing of the filter effect of the filter for the said air blower. It is explanatory drawing of the filter thickness effect in a prior art example. It is explanatory drawing of the air purification effect in a room | chamber interior. It is explanatory drawing of the wind speed measuring method in the filter for the said air blowers. It is a graph which shows the measurement result of the filter area and wind speed of the filter for the said air blower. 6 is a perspective view of a blower filter in Embodiment 3. FIG. It is explanatory drawing of the filter for air blowers in Example 4. FIG. It is explanatory drawing which shows the relationship between the magnification | multiplying_factor when the circular area S and length L of the clean space which the whole forms in a column shape are set.

  A blower filter according to an embodiment of the present invention includes a fan drive unit that directly supports a blower fan that rotates in a fan guard formed in a mesh shape or a lattice shape, and a support column that supports the fan drive unit. A filter for a blower device provided with a filter member that is attached to a blower device such as an electric fan and that removes suspended matters and harmful components in the air that is taken in from the back side of the fan guard and blown to the front side thereof. The filter member is formed in a substantially bag shape from a non-woven fabric or a woven fabric, and has a notch-shaped strut mounting portion disposed around the strut portion of the fan, and the bag-shaped opening edge is outside the fan guard. It is configured to be locked from the back side through a filter locking member at the periphery, and to bulge to the back side of the fan guard to form a predetermined clean space including the fan driving unit.As a result, existing fan filters that are easy to install and excellent in design and manufacturing cost, as well as being excellent in maintainability without dust being directly sucked into the fan drive during use of the fan It can be applied without remodeling the air blower such as an electric fan.

  The filter member is formed in a substantially bag shape from a nonwoven fabric or a woven fabric. Examples of the material include a nonwoven fabric and a woven fabric made of polyethylene terephthalate, polyester, urethane, cellulose, nylon polyolefin, and the like. And these can be made into the two-layer structure which has arrange | positioned the functional resin etc. which contain an antibacterial agent etc. in the inner-layer part for the nonwoven fabric or the woven fabric as an outer layer. For example, as a material having an antibacterial action, inorganic compounds that elute metal ions such as silver and copper, metal fine particles such as silver and copper, enzyme preparations, natural ingredient extracts such as catechins, and the like can be applied. Moreover, what was selected from these raw materials can also be comprised in frame shape so that filter layers, such as a nonwoven fabric, may be supported.

  The dust collection performance of the filter body depends on the type and thickness of the filter material. Generally, increasing the filter performance increases the air resistance, but increasing the filter area can be expected to increase the dust removal efficiency. Filter materials such as non-woven fabric can remove cotton dust up to a particle size of about 5 μm. . The filter material should be selected so that it does not get in the way when attached to the fan guard, and cotton dust can be efficiently removed without impairing the function of the fan.

  The filter locking part is provided at the opening of the filter main body formed in a bag shape, and has a function of detachably locking the filter main body to the peripheral edge on the back side of the fan guard. As such a filter locking portion, for example, a planar fastener, a rubber band, a hook, a magnet body, or the like can be applied.

  The strut mounting part is a part such as a cut shape or a partially cut hole provided on the bag opening side of the filter main body, and is arranged so as to surround the periphery of the strut part of the electric fan. It can be attached in close contact with the support through a planar fastener or the like.

The air blower filter of the present embodiment can also form the clean space with an area ratio of 4 to 11 between the filter member and the back surface of the fan guard. Thus, by increasing the filter area, the effect of removing floating dust such as cotton dust in the airflow taken into the fan can be enhanced. Here, the area S1 of the filter member and the area S2 on the back side of the fan guard If the area ratio (S1 / S2) is less than 4, a clean space with an appropriate volume cannot be secured on the back side of the fan guard, and the collection efficiency of dust and the like tends to be extremely reduced. On the contrary, even if the area ratio exceeds 11, the collection efficiency of floating substances such as cotton dust does not change greatly, and the power consumption tends to increase.

  The blower filter of the present embodiment is also characterized in that the filter member is made of a resin material that has been impregnated and cured so that the filter member is maintained in a bulging shape (bag shape) in the driving state of the fan driving unit. have. Thereby, the filter member can be maintained in a bulging state on the windward side even when the electric fan is in use. For example, it can be cured by applying or spraying a liquid resin material to the bulging filter member, and a clean space having a predetermined volume and including the fan drive unit can be secured on the back side of the fan guard. .

  Note that the filter member itself may be hardened or cured by using an adhesive or the like so that the bulging portion can be held independently. For example, the filter member can be made of a thermoplastic long fiber and can be made into a three-dimensional type that swells in the horizontal direction by bonding the thermoplastic long fibers to each other with a heat-crosslinking adhesive. By using such a thermoplastic long fiber, the filter member can be easily formed into a bulging shape by heating, and excellent in mold holding property can be obtained. As the thermoplastic long fibers, for example, polyester-based long fibers are preferably used. This is because long fibers are superior to short fiber nonwoven fabrics in terms of physical properties such as tensile strength and are excellent in mold retention. The long fibers are preferably those having low rigidity from the viewpoint of moldability. Such a thermoplastic long fiber nonwoven fabric can be easily obtained by a spunbond method.

  The air blower filter according to the present embodiment includes a frame portion made of a shape memory alloy, an aluminum alloy material, a bamboo material, or the like, in which the support structure of the filter member is supported, and the bag-like shape is maintained in the driving state of the fan driving portion. As described above, the present invention is also characterized in that the substantially bag-shaped nonwoven fabric or woven fabric is covered with the frame portion. Thereby, the support structure for maintaining the filter member in a bulging shape on the windward side can be reliably set.

  In the air blower filter of the present embodiment, the filter member may be impregnated or attached with a functional resin material containing a fragrance component, an antibacterial agent component, an ion generating component, or an insecticide component. By attaching these functional resin materials to the filter member, it is possible to suppress the activity of harmful components contained in dust and dirt in the air, and to provide a filter for a blower having an excellent air purification effect. Furthermore, by attaching a fragrance component to the filter member via a functional resin material, the fragrance component, deodorant component, etc. diffuses from the air blown to the front of the fan through the filter member, deodorizing the room and being comfortable The environment can be maintained. Here, examples of the deodorant component include activated carbon. Furthermore, examples of the antibacterial component include titanium oxide. These may contain these active ingredients in the fiber of the filter material in advance, or may be impregnated and attached to the filter fiber by a coating method such as spraying after the production of the filter material.

  Hereinafter, Examples 1 to 4 for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view in which a filter for a blower according to a first embodiment is mounted on a fan that is a blower, and FIG. 2 is an explanatory view showing a form of use thereof.
As shown in the drawing, the air blower filter 10 of Example 1 has a filter member 11 that is sewn in a substantially bag shape with a nonwoven fabric or woven fabric such as polyester having a thickness of about 1 to 3 mm, and a periphery of the support column of the electric fan. The filter attachment which consists of the support | pillar attaching part 12 formed in the cut shape arrange | positioned, and the belt | belt belt for fixing the bag-shaped opening edge of the filter member 11 to the outer periphery of a fan guard back side, a planar fastener, etc. The stopper member 13 is provided.

  An electric fan 20 to which such a blower filter 10 is attached includes a substantially disc-shaped fan guard 21 that is provided around the front and rear of an axial flow type fan provided at the top, and the fan guard 21. A fan drive unit 22 including a drive motor that is connected to the back surface and drives the blower fan by supporting the shaft, a support unit 23 that is connected to the lower part of the fan drive unit 22 and rotatably supports the whole, and a support unit A stand bottom plate 24 on which the unit 23 is erected is provided. The stand bottom plate 24 is provided with an on / off switch for a blower fan (not shown), and an operation unit for controlling the rotational speed (wind speed), direction (swing), and the like of the fan drive unit 22.

The filter member 11 is partially impregnated and cured with a paste or a resin agent on the surface of the sewed filter material in order to maintain a bag-like shape that bulges upward when the filter member 11 is attached to the electric fan 20. Thus, the shape is formed. The column attachment portion 12 of the filter member 11 attached to the column portion 23 of the electric fan 20 is a portion formed by cutting a predetermined length from the bag-like opening edge side of the filter member 11, and planar fasteners are formed on both sides of the cut portion. It is arranged so that it can be attached to and detached from the column part 23.
Moreover, the filter member 11 is optimized by selecting it according to the particle diameter of the suspended | floating matter which captures conditions, such as the kind of filter raw material used as the filter raw material, thickness, density, and a multilayer structure, or the air volume of the electric fan to apply. be able to.

  The blower filter 10 in the normal size fan 20 has a size substantially equal to the diameter (for example, about 35 cm) of the fan guard 21, and the bag-like opening edge is circular in accordance with the shape of the fan guard 21. Is preferred. On the lower side of the opening edge of the filter member, there is provided a column attachment portion 12 into which a column portion 23 that supports the fan drive unit 22 is inserted (see FIG. 2B as viewed obliquely forward). The support attachment portion 12 is provided so that the blower filter 10 having a circular bag-like opening edge does not hit the support portion 23.

  The filter member 11 is made of a filter material for adsorbing and filtering dusts, for example, a non-woven fabric layer such as polyethylene terephthalate, polyester, urethane, nylon, and polyolefin, a sponge-like porous layer, and the like. In addition, a functional resin agent containing an aroma component, an antibacterial component, and an insecticidal component is added to or pasted to the filter layer that adsorbs and removes suspended substances and harmful components in the air, thereby providing a predetermined filter to the blower device filter. It is also possible to add fragrance effects and insecticidal effects as needed.

  For the functional resin described above, for example, those containing aroma components such as lemon oil and peppermint oil and various fragrance components such as vegetable essential oil can be applied, and these are mixed into the resin material via a solvent. And may be attached. And by using the air blower filter configured as described above, the air sucked from the back surface of the fan guard 21 by the rotation of the air blowing fan is mixed with fragrance components, etc. When a malodorous component is contained, the malodorous component can be deodorized with an aromatic component.

  Moreover, in addition to the antibacterial component and the fragrance component described above, for example, a photocatalyst component, an adsorbent, activated carbon, and the like are disposed on the inner layer or the outer layer of the filter member 11 in the air blower filter 10, thereby causing a malodorous component or a sick house. It can also be made harmless by adsorbing and oxidizing substances such as acetaldehyde.

  When dust or dirt is adsorbed to the air blower filter 108 and clogging occurs, and the air blowing and purification function is reduced, the outer edge of the fan guard 21 and the support post mounting portion from the periphery of the support post 23 supporting the fan drive unit 22 The double-sided fastener 12 is removed, and the blower filter 10 locked via the filter locking member 13 can be removed from the back surface of the fan guard 21 to be easily replaceable.

FIG. 3 is an explanatory diagram of the principle when the blower filter 10 is attached to the electric fan 20 to remove dust and the like floating in the indoor air. As shown in FIG. 3, when the area of the filter member made of a thick filter material is increased, cotton dust is adsorbed by the filter member, but a necessary predetermined air volume can be secured.
On the other hand, in the conventional blower filter 40 in which the filter member is closely disposed on the back surface of the fan guard, when the filter member is thick as shown in FIG. It does not pass through but the wind does not pass through. Further, when the filter member is thin as shown in FIG. 4B, the wind passes through the filter surface, but the cotton dust is also transmitted at the same time.
Therefore, although the air volume can be secured in the electric fan, the amount of wind power is small. Therefore, by increasing the filter area, the dust can be removed without impairing the original function of the electric fan as much as possible. In addition, if the dust is forcibly removed with a filter having a small area, wind power is required in addition to the air volume, so that noise and heat are generated and the practicality is lowered.
In this embodiment, as shown in FIG. 5 (a), the indoor air can be circulated largely as a whole, and the generation of noise and heat can be reduced by the air volume of the fan. In this way, the dust removal range is increased compared to the case of using a conventional air purifier 41 as shown in FIG. 5 (b), and floating substances such as dust and harmful components are removed from the indoor air. It can be effectively removed.

FIG. 6 is a schematic explanatory view of a test method for measuring the relationship between the filter area S and the wind force V in the electric fan equipped with the blower filter, and FIG. 7 is a measurement result of the filter area S and the wind speed V. It is a graph which shows data.
As shown in FIG. 6, in the blower filter of Example 2, a bag-like filter member having a different filter area S is attached to the back surface of the fan guard of the electric fan, and the position is 5 cm in height from the front center 20 cm of the electric fan. An anemometer was placed on the wind speed V and the wind speed V was measured.
The used electric fan was made by YUSAS (model number: YT-31V), and the anemometer was made by MotherTool (model number: AM-4203).
The filter is made from Mitsubishi Aluminum (also used as a range hood thick filter), and a measurement experiment is conducted with a filter member that is sewn in a substantially cylindrical bag shape so that the filter thickness is about 1 mm and the outer diameter attached to the fan guard is about 40 cm. went.

  Here, in the case of no filter, the wind speed when the fan was operated in the weak mode was 2.0 m / s, the medium mode was 3.3 m / s, and the strong mode was 4.2 m / s. Thus, when there is a filter with the filter member attached to the fan, the wind speed (weak operation mode) measured by the anemometer with respect to the filter area magnification of this filter member. Table 1 and FIG. 7 show the wind speed values at the wind speed (medium operation mode) and the wind speed (strong operation mode).

As apparent from Table 1 and FIG. 7, it can be seen that by setting the filter member with an area of about four times the blade area of the blower fan, a wind speed of 80% or more in the case of no filter can be obtained.

Table 2 shows an example of reference data in the design of the filter for the blower, and shows the relationship between the circular area S and the magnification when the length L is set for the clean space formed entirely in a cylindrical shape. (See FIG. 10).

FIG. 8 is a perspective view of the air blower filter of Example 3 provided with a support structure that maintains a bulging shape. (A) is the perspective view which mounted | wore the fan with the filter for air blowers, (b) is explanatory drawing which shows the usage form.
As shown in the drawing, the blower filter 30 of the third embodiment constitutes a filter member 31 sewn in a bag shape and a support structure for maintaining the filter member 31 in a bulging shape or a cylindrical shape without losing its shape. In order to engage the outer peripheral edge of the fan guard 21 with the frame portion 32 to be engaged with, the strut mounting portion 33 formed in a cut shape disposed around the strut portion 23 of the electric fan 20, and the bag-like opening edge of the filter member 31. The filter locking member 34 is configured.

The frame portion 32 is made of, for example, a wire made of a shape memory alloy formed in an umbrella bone shape, a lattice shape, or the like. Even if the filter member 31 is deformed when attached to the electric fan 20, the frame portion 32 is not in the use state. By restoring the storage state bulging upward, it is possible to secure a clean space including the fan drive unit 22 from which floating substances are removed on the back side of the fan guard 21.
In addition, the frame part formed in the shape of an umbrella frame, etc. is configured by combining hard resin material, aluminum alloy, bamboo material, etc., and a functional resin material with bactericidal and aromatic properties is attached to this wire material It may be.
Such a frame portion 32 is set to have an appropriate size and size according to the effective area of the filter member. For example, it is desirable to set the substantially cylindrical frame portion so that the area ratio is about four times the area of the blower fan of the used fan.

  The filter locking member 33 is, for example, a rubber elastic band or the like that is provided with planar fasteners at both ends and can be formed into a ring shape by joining the both ends. The fan guard can be easily attached and detached. This makes it possible to easily perform the replacement work of the blower filter 30 when the suspended matter adheres and the permeated air volume decreases.

FIG. 9 is an explanatory diagram of a filter for a blower of Example 4 attached to a blower for processing the air taken in by an ion generator, an air purifier, an air conditioner or the like and releasing it into the room.
The blower filter 40 according to the fourth embodiment is a cuboid filter for dust removal that is attached to the air intake side of the blower 41 formed in a substantially box shape. As shown in FIG. 9A, the blower filter 40 is formed in a substantially square bag shape and disposed around the fan connected to the fan drive unit 43 of the blower 41. The rectangular case outer periphery is locked from the back side via a filter locking member, and a predetermined clean space including the fan drive unit 43 is formed.

The filter member 42 is provided with a frame portion such as a metal wire or a synthetic resin rod serving as a skeleton on each side of the square so that the entire filter member 42 is held in a rectangular parallelepiped shape. By setting the total area in which clean air is discharged from the blower 41 by the member 42 to a range of, for example, 1/4 to 1/10 with respect to the total area in which dirty air is taken into the blower 41. The dust removal effect by the blower filter 40 is optimized.
In this way, as shown in FIG. 9B, the air blower 41 to which the air blower filter 40 is attached is installed in the room and the fan drive unit 43 is driven to remove dust floating in the air. Can be effectively adsorbed and removed by the filter 40.

  The gist of the present invention is to form a clean space having a predetermined volume by bulging to the back side of a fan guard and a fan driving unit of a blower such as an electric fan, thereby obtaining a high dust collection effect. In addition, when the blower is in use, dust or the like is not directly sucked into the fan drive unit, and a blower filter excellent in maintainability can be provided. In this way, a cleaning function with low air resistance and capable of adsorbing and capturing suspended matters and harmful substances in the air can be widely applied to existing fans, air purifiers, air conditioners, ion generators and the like. .

DESCRIPTION OF SYMBOLS 10 Filter 11 for ventilation apparatuses of Example 1 Filter member 12 Strut attachment part 13 Filter latching member 20 Fan (blower apparatus)
DESCRIPTION OF SYMBOLS 21 Fan guard 22 Fan drive part 23 Support | pillar part 24 Stand bottom board 30 Filter 31 for air blowers of Example 3 Filter member 32 Frame part 33 Strut attachment part 34 Filter latching | locking part 40 Filter 41 for air blowers of Example 4 Air blower 42 Filter member 43 Fan drive unit

Claims (5)

The fan guard is attached to a blower device such as a fan having a fan drive unit that directly supports and supports a blower fan that rotates within a fan guard formed in a net shape or a lattice shape, and a support unit that supports the fan drive unit. It is a filter for a blower device provided with a filter member that removes suspended matters and harmful components in the air taken in from the back side of the air and blown to the front side thereof,
The filter member is formed of a non-woven fabric or a woven fabric in a substantially bag shape and has a notch-shaped column mounting portion disposed around the column unit of the blower, and the bag-shaped opening edge is an outer peripheral edge of the fan guard. The blower filter is characterized in that a predetermined clean space including the fan driving unit is formed by being locked from the back side through a filter locking member and bulging to the back side of the fan guard.   The blower filter according to claim 1, wherein the clean space is formed with an area ratio of the filter member and the back surface of the fan guard of 4 to 11.   The blower device according to claim 1 or 2, wherein the filter member is made of a resin material that has been impregnated and cured, and is configured so that the bag shape is maintained in a driving state of the fan driving unit. Filter. The filter member includes a frame portion made of a shape memory alloy, an aluminum alloy material, a bamboo material,
In order to maintain the bag-like form in the driving state of the fan driving unit,
The blower filter according to claim 1 or 2, wherein the substantially bag-shaped nonwoven fabric or woven fabric is covered with a frame portion.   The filter member is impregnated or impregnated with a functional resin material containing a fragrance component, an antibacterial component, an ion generating component, or an insecticide component. The filter for ventilation apparatuses of description.