JP2005118658A - Filter and filter unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter which can be deformed flexibly according to the shape or size of the place where the filter is mounted and be mounted there and the air flow resistance of which can be made small even when the filter is made small by deformation. <P>SOLUTION: This filter 7 is constituted so that a filter medium 8 made from a nonwoven fabric or a glass fiber is formed into a pleated shape and air is filtered by the filter medium 8 to collect/decrease dust, a bad smell, etc. in the air. A flexible lining material 9 is stuck to the back side of the filter medium 8 so that the filter 7 can be deformed freely according the shape of the place where the filter 7 is installed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a filter and a filter unit, and in particular, a filter that can be flexibly deformed and arranged in accordance with the shape and size of an installation place, and that does not increase air passage resistance when deformed and reduced. And the filter unit.

For example, as shown in FIG. 8, a conventional air-conditioning filter is formed with a bellows-shaped fold (known pleat shape) made of a material such as nonwoven fabric or glass fiber, and has a thickness for reinforcing the pleat shape on the back surface. A filter material 1 having an aluminum reinforcing material 3 of about 0.4 mm and a width of about 1.0 mm, a filter material 2 having the same structure disposed on the filter material 1, and a holding wire mesh 5 are arranged on the back side. On the upper side, it is composed of a metal outer frame 4 made of aluminum or the like to which a removable lid 6 is screwed. With the lid 6 of the outer frame 4 open, the filter material 1 and the filter material 2 having the same structure are stacked and stored in front of the wire mesh 5 on the back side, and the lid 6 of the outer frame 4 is The wire mesh 5 holds the filter materials 1 and 2 from the rear surface, and a wire rod holding rod (not shown) is pressed against the front surface of the filter materials 1 and 2 and held from the front surface. The filter materials 1 and 2 are fixed and held in the outer frame 4. When the air flow indicated by the arrow A flows into the filter materials 1 and 2 in this state, the sealing performance in the outer frame 4 is maintained, so that filtration is performed in a stable state. As described above, the air-conditioning filter shown in FIG. 8 is formed with the pleated shape so that the filtration area is expanded and the filtration performance is improved. (For example, see Patent Document 1)
Japanese Patent Laying-Open No. 2003-181223 (pages 2 and 3, FIG. 1)

  The air-conditioning filter disclosed in Patent Document 1 has a pleated shape, which increases the filtration area and improves the filtration performance, but uses a fixed-shaped outer frame 4 when actually installed. There is a problem that it cannot be installed at a place where the ventilation duct or the like is attached to a location that does not match the size of the outer frame 4.

  In recent revisions to the law, for example, as a countermeasure against sick house syndrome caused by toxic gas generated from building materials, plywood, adhesives, etc., ventilation to discharge toxic gas from ordinary residences at the same time as limiting building materials It newly requires the installation of air purification equipment such as equipment and air conditioning equipment. Specifically, these facilities operate 24 hours a day with a ventilation rate of 0.5 times / h (0.5 ventilations per hour means replacing half of the room air per hour). Is going to have to be a ventilation system. However, in general houses such as single-family houses and condominiums, the size of the mounting location of the air conditioning filter such as the exhaust port, duct, and air supply port is different. This type of air conditioning filter is difficult to install, and the air conditioning filter disclosed in Patent Document 1 is provided with two filter materials having the same performance. There was a problem of being insufficient.

  Therefore, a filter and a filter that can improve the filtration performance and can be flexibly deformed according to the shape and size of the mounting location, and can reduce the air passage resistance even when deformed and reduced. The technical problem which should be solved in order to provide a unit arises, and this invention aims at solving this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is characterized in that air is filtered by a filter material formed in a pleat shape using a nonwoven fabric or glass fiber as a material. A filter that collects and reduces dust, odors, etc., and is a flexible backing material formed in a frame shape along the four side edges in the vicinity of the four side edges of the filter material formed in the pleat shape The present invention provides a filter that is configured to be freely deformable by attaching a tape.

  According to the first aspect of the present invention, even if the shape of the ventilation hole, duct, etc. of the installation place is smaller than the size of the filter, the filter can be adapted to the shape. Can be deformed and reduced in size.

  The invention described in claim 2 provides a filter in which the backing material is formed of at least one material selected from paper, metal, rubber or resin.

  According to the second aspect of the present invention, the backing material can be selected from paper, metal, rubber and resin, so that the pleat shape of the filter can be maintained and the filter can be configured to be deformable.

  The invention described in claim 3 is a filter that collects and reduces dust, odor, etc. in the air by filtering the air with a filter material formed in a pleat shape using nonwoven fabric or glass fiber as a material. In addition, a flexible backing material formed in a frame shape along the four side edges is pasted in the vicinity of the four side edges of the filter material formed in the pleat shape so as to be deformable, and the roughness of each eye The present invention provides a filter unit in which a plurality of filters having different configurations are housed in a case.

  According to the third aspect of the present invention, the filter performance is improved by storing in the case a plurality of filters having different meshes of the filter formed with the pleated shape and attached with a flexible backing material. In addition to improving, it is possible to prevent clogging of the filter material.

  According to a fourth aspect of the present invention, there is provided a filter unit in which the plurality of filters are selectively combined with a pre-filter, a medium-performance filter, a high-performance filter, an ultra-high performance filter, and a deodorizing filter having different eye roughness. Is to provide.

  According to the fourth aspect of the present invention, it is possible to operate for a long time without clogging by disposing a coarse filter in the first stage and arranging each fine filter in the subsequent stage.

  According to a fifth aspect of the present invention, there is provided a filter unit in which the case is a hard cardboard.

  According to the fifth aspect of the present invention, the filter unit can be configured at a low cost. For example, when the filter material is also flammable, it can be treated as combustible trash at the time of disposal.

  The invention according to claim 1 of the present application is such that the filter can be deformed in accordance with the shape of the installation place, and the shape of the ventilation hole, the duct, etc. of the installation place is smaller than the size of the filter. In addition, there is an advantage that the filter can be deformed and reduced in size, and there is an advantage that the air passage resistance is not increased by deforming and reducing the whole.

  Further, in the invention described in claim 2, by selecting paper, metal, rubber, or resin as the backing material, in addition to the effect of the invention described in claim 1, the pleated shape of the filter is maintained, and The filter can be configured to be deformable.

  According to a third aspect of the present invention, the filter unit is composed of a plurality of filters having different meshes, so that the filtration performance can be improved and the clogging of the filter can be reduced.

  According to a fourth aspect of the present invention, in addition to the effect of the third aspect of the invention, the plurality of filters are provided with a coarse prefilter at the first stage and fine filters at the second stage. Clogging can be reduced efficiently.

  Further, in the invention described in claim 5, since the outer frame is made of hard corrugated cardboard, in addition to the effect of the invention described in claim 3 or 4, it can be configured at low cost, and the filter material and the backing material are flammable. In this case, since it can be treated as combustible waste, there is an advantage that environmental problems when it must be discharged as industrial waste and treatment costs associated therewith can be reduced.

  The present invention provides a filter and a filter unit that can be flexibly deformed and arranged in accordance with the shape and size of the mounting location, and that does not increase the air passage resistance even when deformed and reduced. The object of achieving this was achieved by attaching a flexible backing material to a filter material formed in a pleat shape and making it deformable.

  An embodiment of the present invention will be described below with reference to FIGS.

  FIG. 1A is a plan view of the filter, and FIG. 1B is a front view. In the figure, reference numeral 7 denotes a filter. The filter 7 includes a filter material 8 having a pleat shape formed using a nonwoven fabric or glass fiber as a material, and the filter material 8 along the four side edges of the back surface. Thus, a frame-type flexible paper, metal, rubber, resin, or other backing material 9 having a relatively narrow frame width is pasted. Therefore, the filter 7 can be flexibly deformed. The filter 7 includes a reinforcing backing material such as a lattice or a plurality of belt-like backing materials in addition to the frame-shaped backing material 9 when the filter 7 has a relatively large size. Further, it can be additionally formed.

  FIGS. 2A and 2B are shapes when the filter 7 shown in FIG. 1 is bent and deformed in the front-rear direction (the same direction as the air passage direction indicated by the arrow) to reduce the cross-sectional area in the passage direction. FIG. 2 (a) is a plan view, and FIG. 2 (b) is a front view. In this case, the shape can be reduced without changing the air passage amount.

FIG. 3 is a plan view of a five-stage filter unit. In the figure, 10 is a filter unit, and the filter unit 10 is composed of a pre-filter 12, a medium performance filter 13, a high performance filter 14, a super high performance filter 15 and a deodorizing filter 16 stacked in five stages. Has been. The deodorizing filter 16 is installed at the subsequent stage of the ultra-high performance filter 15, but is not limited thereto, and any one of the pre-filter 12, the medium performance filter 13, and the high performance filter 14 is used. It is also possible to install in the latter stage. The filter materials of the prefilter 12, the medium performance filter 13, the high performance filter 14, the ultra high performance filter 15 and the deodorizing filter 16 have the same structure as the filter material 2 of the filter 7 shown in FIG. Similarly, using a material such as nonwoven fabric or glass fiber, a similar pleat shape is formed, and a similar backing material 17, 18, 19, 20, 21 is applied to the prefilter 12, The performance filter 13, the high performance filter 14, the ultra high performance filter 15, and the deodorizing filter 16 are configured. The filter material of the pre-filter 12 is coarser than the other filter materials, and is formed thick. For example, it removes coarse dust having a particle size of about 10 to 20 μm first. Pollen and plant spores can be removed from the drops.

  Next, the filter material of the neutral filter 13 has the same material and pleat shape as the filter material of the pre-filter 12, but it can remove even finer and finer particles with a particle size of about 2 μm. And part of bacteria can be removed. Next, the filter material of the high-performance filter 14 is the same as the medium-performance filter 13 with respect to the pleat shape and the like, but it is a so-called HEPA filter (referred to as “Hepa” and an abbreviation for “High Efficiency Particulate Air Filter”). Further, 99.97% of finer particles having a particle size of 0.3 μm can be collected, and a part of cigarette smoke, oil smoke, and viruses can be removed. The filter material of the ultra-high performance filter 15 is the same as the high-performance filter 14 in terms of material and pleats, but is a so-called ULPA (referred to as ULPA, an abbreviation for ULTRA Low Penetration Airfilter) filter. 99.999% of particles having a particle size of 0.15 μm can be collected and can be removed from smoked iodide to viruses. The filter material of the deodorizing filter 16 is a filter material formed by a process such as impregnating filter fibers with activated carbon, and can absorb odors.

  After affixing frame type backing materials 17, 18, 19, 20, 21 using flexible paper, metal, rubber, and resin along the four side edges of each filter material, the entire outer frame 22 is attached. The pre-filter 12, the medium performance filter 13, the high performance filter 14, the ultra high performance filter 15, and the deodorizing filter 16 are stored using the backing materials 17, 18, 19, 20, and 21. The outer frames 22 are fixed to each other by adhesion or the like. FIG. 3 shows an example in which the entire filter unit 10 is stacked and bent in the front-rear direction (the direction of airflow indicated by the arrow), but is not limited thereto. Other shapes can also be modified. For example, it can be modified into an S shape. Since it has a flexible structure that can be deformed in this way, the prefilter 12 and the medium performance filter 13 can be adapted to the shape of the installation location, for example, when the inner surface shape of the duct at the installation location is small. The high-performance filter 14, the ultra-high performance filter 15, and the deodorizing filter 16 can be modified and disposed. In this case, since the backing materials 17, 18, 19, 20, and 21 are only deformed once at the beginning, a hard material such as metal or resin can be used. In actual use, for example, if the filter material and backing material are flammable, they are stored in the outer frame 22 made of hard cardboard material with low dust generation or no dust. If the filter unit 10 is replaced, it can be discarded as burnable garbage when the filter unit 10 is replaced. Moreover, although the arrow has shown the direction of airflow, if the direction of airflow is reversed, the arrangement | sequence order of each said filter will also be reversed.

Next, FIG. 4 is a plan view of a three-tiered filter unit. In the figure, reference numeral 23 denotes a filter unit, and the filter unit 23 is composed of a pre-filter 24, a medium-performance filter 25, and a deodorizing filter 26 which are stacked in three stages. The deodorizing filter 26 is installed at the subsequent stage of the medium performance filter 25. However, the present invention is not limited to this, and the deodorizing filter 26 may be installed at the subsequent stage of the prefilter 24. The prefilter 24, the medium performance filter 25, and the deodorization filter 26 have the same material, pleat shape and performance as the prefilter 12, the medium performance filter 13 and the deodorization filter 16 shown in FIG. The materials, shapes, etc. of the backing materials 27, 28, 29 are the same as the backing materials 17, 18, 21 of the pre-filter 12, the medium performance filter 13, and the deodorizing filter 16 shown in FIG. In addition, frame type backing materials 27, 28, and 29 using flexible paper, metal, rubber, and resin are attached along the four side edges of the pre-filter 24, the medium-performance filter 25, and the deodorizing filter 26. After that, the whole is housed in the outer frame 22, and the pre-filter 24, the medium performance filter 25, and the deodorizing filter 26 are fixed to each other by bonding or the like using the backing materials 27, 28, 29. It is fixed to. Moreover, although the filter unit 23 shown in FIG. 4 also shows the example which bent and deform | transformed in the direction of the airflow shown by the arrow, it is not limited to this, Various deformation | transformation is possible, S shape etc. Can also be deformed. Further, the combinations of the filters are not limited to the combination of the pre-filter 24, the medium performance filter 25, and the deodorizing filter 26, and various combinations are possible depending on the situation. In the case of the filter unit 23 shown in FIG. 4 as well, if the filter material and the backing material are flammable, they can be disposed of as waste that is burned during replacement if they are stored in the outer frame 22 made of hard cardboard or the like. it can.

  FIG. 5 is a configuration diagram of a ventilation system using a filter unit. In the figure, reference numeral 30 denotes a ventilation system. The ventilation system 30 exhausts a part of indoor air to the outside through a living room 31 provided with suction ports 36 and 37 and a blowing port 38 and the suction port 36. An exhaust fan 35 that filters the outside air from outside, a filter unit 34 that has the same configuration as the filter unit shown in FIG. 4 (23 in FIG. 4), and the outside air from the filter unit 34 and the room 31 The filter unit 32 having the same configuration as the filter unit shown in FIG. 3 (10 in FIG. 3) that filters both of the air, the outside air flowing into the filter unit 32, and the air in the living room 31 are A suction fan 33 that takes in from the suction port 37 and supplies filtered air from the blowout port 38 is formed. From the living room 31, air for indoor exhaust (for example, when about 20% of the filtered room air is exhausted and about 80% is circulated) passes through the suction port 36 and the duct 39 on the back of the ceiling. The air is exhausted outdoors by the exhaust fan 35. On the other hand, outside air flows into the filter unit 32 through the filter unit 34 through the filter unit 34 and is circulated from the suction port 37 of the living room 31 by the suction fan 33. The suction fan 33 flows into the filter unit 32, is filtered, and is supplied to the living room 31 from the outlet 38. By introducing the filter units 32 and 34 into the ventilation system in this way, each filter in the filter units 32 and 34 can be deformed, and the passage resistance of air can be increased even when deformed or reduced. Therefore, the burden on the suction fan 33 and the exhaust fan 35 is not increased, and the electricity cost of the motor (not shown) to be operated can be reduced. Here, the filter unit 34 is also provided at the outside air inlet, but the filter unit 34 may be omitted and only the filter unit 32 may be provided. At that time, a predetermined ventilation performance can be expected.

  Further, since the filter units 32 and 34 are formed in a pleat shape, the contact area of the air is increased, and further, according to the state of the installation place, as shown in FIG. 3 and FIG. Even when it is deformed flexibly in accordance with (size), the air passage resistance is not increased. This will be described with reference to FIG. 6. FIG. 6 (a) shows the shape when it is not deformed, and FIG. 6 (b) shows the shape when it is deformed. For example, even if it is deformed as shown in FIG. 6B, the air contact area does not change, so the air passage resistance does not increase and the filtration performance does not deteriorate.

  The examples of the filter units 10 and 23 have been described so far as the three-stage and five-stage configurations, but the present invention is not limited to this, and an appropriate number of stages can be set.

For detecting the life of the filter units 10 and 23, a pressure loss due to a difference in static pressure between upstream and downstream is detected using a differential pressure gauge or the like, and the detected value exceeds a preset threshold value. Then, it is detected by a method such as judging that it has reached the end of its life, and displayed on a lamp or the like to prompt replacement.

  Next, FIG. 7 is a diagram showing an exhaust system for a kitchen. In the figure, reference numeral 40 denotes an exhaust system. The exhaust system 40 includes a kitchen cooking chamber 41, a ceiling 42 for collecting air containing oil smoke and the like in the cooking chamber 41, and a dirt collected by the ceiling 42. A filter unit 23 comprising the same prefilter 24, medium performance filter 25 and deodorizing filter 26 as the filter unit shown in FIG. 4 (23 in FIG. 4) for filtering air through the duct 45, and the filter unit 23 and an exhaust fan 43 that exhausts the air filtered and deodorized to the outdoors 44. Oily smoke and strong odorous air generated from the cooking chamber 41 is collected by the ceiling 42, passes through the duct 45, is deodorized and filtered by the deodorizing action of the deodorizing filter 26 in the filter unit 23, and is exhausted from the exhaust fan 43. As a result, the odor exhausted from the cooking chamber 41 can be prevented from adversely affecting surrounding houses.

  Thus, the filter according to the present invention has a flexible and deformable structure using a flexible backing material, so that it is not limited by the shape of the installation place and can be disposed anywhere. The application is expanded.

  Further, by storing a plurality of filters having different meshes of the filter in a case to form a filter unit and disposing it at the actual installation location, the air filtration performance is improved, and each filter The load can be distributed to prevent clogging.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

(A) An embodiment of the present invention and a plan view of the filter (b) An embodiment of the present invention and a front view of the filter (A) An embodiment of the present invention, showing a plan view of the filter at the time of deformation (b) A front view of the filter, showing an embodiment of the present invention and at the time of deformation The top view of 5 steps | paragraphs of filter units which show one embodiment of this invention The top view of the filter unit of 3 steps | paragraphs which shows one embodiment of this invention 1 is a block diagram of a ventilation system using a filter unit according to an embodiment of the present invention. Explanatory drawing which shows one embodiment of this invention and demonstrates the air resistance of a filter unit Explanatory drawing which shows one embodiment of this invention and shows the exhaust system for kitchens A perspective view of a conventional air conditioning filter

Explanation of symbols

7 Filter 8 Filter material 9, 17-21, 27-29 Backing material 10, 23, 32, 34 Filter unit 12, 24 Pre-filter 13, 25 Medium performance filter 14 High performance filter 15 Super performance filter 16, 26 Deodorization filter 22 Outer frame 30 Ventilation system 31 Living room 33, 35, 43 Fan 36, 37 Air inlet 38 Air outlet 39, 45 Duct 40 Exhaust system 41 Cooking room 42 Ceiling 44 Air outlet

Claims (5)

A filter that collects and reduces dust, odors, etc. in the air by filtering the air with a filter material formed into a pleat shape using nonwoven fabric or glass fiber as a material,
A flexible backing material formed in a frame shape along the edge of the four sides of the filter material formed in the pleat shape is attached to the vicinity of the edge of the four sides, and is configured to be deformable. filter.   2. The filter according to claim 1, wherein the backing material is formed of at least one material selected from paper, metal, rubber, or resin.   A filter material that collects and reduces dust, odors, etc. in the air by filtering air with a filter material formed in a pleat shape using a nonwoven fabric or glass fiber as the material, and the filter material formed in the pleat shape In the vicinity of the four side edges, a flexible backing material formed in a frame shape along the four side edges is pasted to be deformable, and a plurality of configurations each configured to have different eye roughness A filter unit in which the filter is housed in a case.   4. The filter unit according to claim 3, wherein the plurality of filters are selectively combined with a pre-filter, a medium-performance filter, a high-performance filter, an ultra-high performance filter, and a deodorizing filter having different eye roughness. .   5. The filter unit according to claim 3, wherein the case is a hard cardboard.

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