JP4777690B2 - Air filter - Google Patents

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JP4777690B2
JP4777690B2 JP2005162421A JP2005162421A JP4777690B2 JP 4777690 B2 JP4777690 B2 JP 4777690B2 JP 2005162421 A JP2005162421 A JP 2005162421A JP 2005162421 A JP2005162421 A JP 2005162421A JP 4777690 B2 JP4777690 B2 JP 4777690B2
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晴義 中村
秀隆 丹羽
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Fuji Chemical Industries Co Ltd
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本発明は、清浄化対象の空気に含まれる粉塵などを除去して当該空気を清浄にするためのエアフィルタに関する。   The present invention relates to an air filter for removing dust contained in air to be cleaned and cleaning the air.

例えば、自動車生産ラインの塗装乾燥工程において、車体に塗布された塗料を乾燥させる乾燥室は、その内部の空気が清浄であることが必要なため、この乾燥室内には、エアフィルタによって粉塵などが除去された空気が適宜供給されるようになっている。   For example, in a paint drying process of an automobile production line, a drying chamber that dries paint applied to a vehicle body needs to have clean air inside. Therefore, dust or the like is contained in the drying chamber by an air filter. The removed air is appropriately supplied.

そして、このようなエアフィルタには、乾燥室内部の温度が高められていることから、耐熱性に優れていることや、乾燥室内の粉塵が塗装面に付着すると、塗装不良の原因となるため、捕集効率に優れていることが要求され、また、乾燥室内に空気を供給する送風機構にかかる負荷を小さくしたり、低性能の送風機構でも空気を供給可能とすべく、圧力損失が小さいことも求められている。   And since such an air filter has a high temperature inside the drying chamber, it has excellent heat resistance, and if dust in the drying chamber adheres to the painted surface, it can cause poor coating. It is required to have excellent collection efficiency, and the pressure loss is small so that the load applied to the air blowing mechanism that supplies air into the drying chamber can be reduced or the air can be supplied even with a low-performance air blowing mechanism. That is also sought.

従来、エアフィルタとしては、例えば、特開2000−300919号公報(特許文献1)に開示されたものや特開2001−25625号公報(特許文献2)に開示されたものなどが知られており、特許文献1には、空気中の粉塵などを除去するエアフィルタが、特許文献2には、空気中の油分を除去するエアフィルタが開示されている。   Conventionally, as an air filter, what was disclosed by Unexamined-Japanese-Patent No. 2000-300909 (patent document 1), and what was disclosed by Unexamined-Japanese-Patent No. 2001-25625 (patent document 2) etc. is known, for example. Patent Document 1 discloses an air filter that removes dust and the like in the air, and Patent Document 2 discloses an air filter that removes oil in the air.

特許文献1のエアフィルタは、ガラス繊維とバインダとが所定の割合で混合されて構成されたガラス繊維シートを備えており、このガラス繊維シートによって粉塵を除去する。   The air filter of Patent Literature 1 includes a glass fiber sheet configured by mixing glass fibers and a binder at a predetermined ratio, and dust is removed by the glass fiber sheets.

一方、特許文献2のエアフィルタは、一定間隔を隔てて平行に配置され、多数の網目を有する平板状の2つの第1捕集網と、この各第1捕集網間に配置され、多数の網目を有する波板状の2つの第2捕集網とを備え、これらの各捕集網によって油分を除去する。尚、各第2捕集網は、その波部山側及び波部谷側の各頂部(折り目)の形成方向が当該第2捕集網の表面と平行な面内でそれぞれ交差するように設けられている。   On the other hand, the air filter of Patent Document 2 is arranged in parallel with a predetermined interval, and is arranged between two flat first collecting nets having a large number of meshes, and between the first collecting nets. And two corrugated plate-like second collection nets, and oil is removed by each of these collection nets. In addition, each 2nd collection net | network is provided so that the formation direction of each crest (fold) of the wave part mountain side and the wave part valley side may each cross | intersect in the surface parallel to the surface of the said 2nd collection net | network. ing.

特開2000−300919号公報JP 2000-300909 A 特開2001−25625号公報JP 2001-25625 A

ところで、エアフィルタは、その使用によって、除去された粉塵や油がガラス繊維シートや各捕集網に一定量以上堆積すると、目詰まりなどの原因になるため、定期的に、ガラス繊維シートや各捕集網を洗浄して、堆積した粉塵や油を除去したり、未使用のものと交換する必要がある。   By the way, the air filter can cause clogging if the dust or oil removed by the use accumulates over a certain amount on the glass fiber sheet or each collection net. It is necessary to clean the collection net to remove accumulated dust and oil, or to replace it with an unused one.

ところが、ガラス繊維シートを洗浄した場合には、洗浄コストが高いため、ランニングコストが高くなるという問題や、洗浄時にかかる水圧などによってガラス繊維が折損し易く、また、折損したガラス繊維が外部に飛散し易いことから、洗浄後の粉塵除去性能が低下するという問題がある。更に、作業者が飛散したガラス繊維を吸い込むと、塵肺といった健康被害を生じる恐れもあり、取り扱いに注意を要する。一方、ガラス繊維シートを洗浄せずに交換しても、交換部品のコストが高いため、洗浄したときと同様、ランニングコストは高くつく。   However, when the glass fiber sheet is washed, the washing cost is high, so that the running cost is high, the glass fiber is easily broken due to water pressure applied during washing, and the broken glass fiber is scattered outside. Since it is easy to do, there exists a problem that the dust removal performance after washing | cleaning falls. Furthermore, if the worker inhales the scattered glass fiber, there is a risk of causing health damage such as pneumoconiosis, and handling is necessary. On the other hand, even if the glass fiber sheet is replaced without cleaning, the cost of replacement parts is high, so that the running cost is high as in the case of cleaning.

また、各捕集網は、上記ガラス繊維シートのような問題はないものの、捕集した油による目詰まりを防止するために網目がある程度大きく形成されているため、細かな粉塵を捕集することができないという問題がある。   In addition, each collection net has no problem like the above glass fiber sheet, but the mesh is formed to a certain extent in order to prevent clogging by the collected oil, so it collects fine dust. There is a problem that can not be.

このため、粉塵などを除去するのに適したエアフィルタであり、再使用可能なエアフィルタの開発が望まれていた。   For this reason, the development of a reusable air filter, which is an air filter suitable for removing dust and the like, has been desired.

本発明は、以上の実情に鑑みなされたものであって、粉塵除去に適し、再使用可能な他、耐熱性、捕集効率、圧力損失、ランニングコストなどの面においても優れたエアフィルタの提供をその目的とする。   The present invention has been made in view of the above circumstances, and provides an air filter that is suitable for dust removal and is reusable, and also excellent in terms of heat resistance, collection efficiency, pressure loss, running cost, and the like. Is the purpose.

上記目的を達成するための本発明は、
第1捕集部,第2捕集部及び第3捕集部の3層構造からなり、清浄化対象の空気が該第1捕集部,第2捕集部及び第3捕集部を順次流通するように構成されたエアフィルタであって、
前記第1捕集部は、多数の網目を有するように金属ワイヤを編んで構成され且つ波板状に形成された複数の網状部材が積層状に設けられ、
前記第2捕集部は、前記第1捕集部の網状部材よりも目の細かい多数の網目を有するように金属ワイヤを編んで構成され且つ平板状に形成された複数の網状部材が積層状に設けられ、
前記第3捕集部は、横断面が矩形状をした金属繊維の不織布から構成されてなり、
前記第3捕集部は、前記第1捕集部及び第2捕集部を通過した、該第1捕集部及び第2捕集部で捕集される粒子よりも小さい粒子を捕集するように構成されてなることを特徴とするエアフィルタに係る。
To achieve the above object, the present invention provides:
It consists of a three-layer structure of a first collection part, a second collection part, and a third collection part, and the air to be cleaned sequentially passes through the first collection part, the second collection part, and the third collection part. An air filter configured to circulate,
The first collection part is configured by knitting metal wires so as to have a large number of meshes, and a plurality of mesh members formed in a corrugated shape are provided in a laminated form,
The second collection part is formed by knitting metal wires so as to have a lot of meshes finer than the mesh member of the first collection part, and a plurality of mesh members formed in a flat plate shape are laminated. Provided in
The third collecting part is composed of a non-woven metal fiber having a rectangular cross section,
The third collection unit collects particles smaller than the particles collected by the first collection unit and the second collection unit that have passed through the first collection unit and the second collection unit. It is related with the air filter characterized by comprising.

この発明によれば、清浄化対象の空気がエアフィルタの第1捕集部側に供給されると、当該空気は、第1捕集部,第2捕集部及び第3捕集部を順次流通し、第2捕集部では、その各網状部材が第1捕集部の各網状部材よりも目が細かく構成されていることから、第1捕集部よりも小さい粒子が捕集され、第3捕集部では、その不織布が第1捕集部及び第2捕集部よりも小さい粒子を捕集するように構成されていることから、第2捕集部よりも小さい粒子が捕集される。そして、各捕集部で粉塵などが除去されて清浄にされた空気が第3捕集部側から外部に排出される。   According to this invention, when the air to be cleaned is supplied to the first collection unit side of the air filter, the air sequentially passes through the first collection unit, the second collection unit, and the third collection unit. In the second collection part, since each mesh member is configured more finely than each mesh member of the first collection part, particles smaller than the first collection part are collected, In the 3rd collection part, since the nonwoven fabric is constituted so that particles smaller than the 1st collection part and the 2nd collection part may be collected, particles smaller than the 2nd collection part are collected. Is done. And the air which dust etc. were removed in each collection part and was cleaned is discharged | emitted from the 3rd collection part side outside.

本発明では、上述のように、第1捕集部及び第2捕集部を、複数の網状部材を積層して構成しているので、当該第1捕集部及び第2捕集部でも比較的細かな粉塵を除去することが可能となり、また、第1捕集部の各網状部材を波板状に形成しているので、積層された各網状部材間に形成される空間内に、除去した粉塵を堆積させることができ、これにより、捕集効率が低下したり、圧力損失が高くなるのを防止しつつ粉塵の捕集量を多くすることができる。   In the present invention, as described above, since the first collection unit and the second collection unit are configured by laminating a plurality of mesh members, the first collection unit and the second collection unit are also compared. It is possible to remove fine dust, and since each mesh member of the first collection part is formed in a corrugated plate shape, it is removed in the space formed between the laminated mesh members. As a result, the collected amount of dust can be increased while preventing the collection efficiency from being lowered and the pressure loss from being increased.

また、このような第1捕集部及び第2捕集部を、不織布からなる第3捕集部の前処理部として設けているので、当該不織布によって大きな粉塵が除去されるのを防止することができ、当該不織布を目詰まりさせ難くすることができる。   Moreover, since such a 1st collection part and a 2nd collection part are provided as a pre-processing part of the 3rd collection part which consists of a nonwoven fabric, it prevents that a large dust is removed by the said nonwoven fabric. It is possible to prevent clogging of the nonwoven fabric.

また、第3捕集部の不織布を、横断面が矩形状の金属繊維から構成しているので、当該繊維部の前後における空気の流動状態を、横断面が円形状の一般的な繊維に比べてより乱れた状態にすることができ、かかる空気の流動によって捕集効率を高めることができると考えられる。横断面が円形状の場合においても、嵩密度が高ければ、横断面が矩形状の場合と略同等に空気の乱れた領域を形成することができるが、嵩密度が高いために空孔率が低下して圧力損失が大きくなるという問題を生じる。逆に、横断面が矩形状の場合は、嵩密度が低くても、より広範囲に渡って空気の乱れた状態を形成することができ、圧力損失を大きくすることなく、捕集効率を効果的に高めることができるものと考えられる。   Moreover, since the nonwoven fabric of the 3rd collection part is comprised from the metal fiber whose cross section is a rectangular shape, the flow state of the air before and behind the said fiber part is compared with the general fiber whose cross section is circular. It is considered that the trapping efficiency can be increased by the flow of air. Even in the case where the cross section is circular, if the bulk density is high, a region in which air is disturbed can be formed in substantially the same manner as in the case where the cross section is rectangular, but the porosity is high because the bulk density is high. This causes a problem that the pressure loss is increased. Conversely, when the cross section is rectangular, even if the bulk density is low, it is possible to form a turbulent state of air over a wider range, effectively increasing the collection efficiency without increasing the pressure loss. It is thought that it can be increased.

また、第1捕集部及び第2捕集部の各網状部材並びに第3捕集部の不織布を、金属から構成しているので、耐熱性があり、また、容易に洗浄して再使用することができるとともに、洗浄しても、当該各捕集部による粉塵除去性能が低下することはない。また、取り扱いに際して不便なこともない。   Moreover, since each mesh member of the 1st collection part and the 2nd collection part and the nonwoven fabric of the 3rd collection part are comprised from the metal, they are heat resistant, and also wash | clean and reuse easily. In addition, even if it is washed, the dust removal performance by each of the collecting parts does not deteriorate. There is no inconvenience in handling.

斯くして、本発明に係るエアフィルタによれば、金属製の第1捕集部,第2捕集部及び第3捕集部からなる3層構造とするとともに、当該各捕集部でこれらにそれぞれ対応した大きさの粒子を除去するようにしているので、空気中の粉塵などを効率的に除去して目詰まりの発生を防止することができるとともに、洗浄によって、捕集された粉塵を除去して再使用することができ、ランニングコストを大幅に削減することができる。   Thus, according to the air filter according to the present invention, the three-layer structure including the first collecting portion, the second collecting portion, and the third collecting portion made of metal is used. Particles of a size corresponding to each are removed, so that dust in the air can be efficiently removed to prevent clogging, and the collected dust can be removed by washing. It can be removed and reused, and running costs can be greatly reduced.

したがって、本発明に係るエアフィルタによれば、当該エアフィルタを、耐熱性、捕集効率、圧力損失、ランニングコスト、取り扱い易さなどの面において優れた粉塵除去用のエアフィルタとすることができる。   Therefore, according to the air filter of the present invention, the air filter can be an air filter for dust removal that is excellent in terms of heat resistance, collection efficiency, pressure loss, running cost, ease of handling, and the like. .

尚、前記第1捕集部及び第2捕集部の各網状部材を構成する金属ワイヤ、並びに前記第3捕集部の不織布を構成する金属繊維の材料には、各捕集部を洗浄水により繰り返し洗浄しても錆び難いものとするために、ステンレスやアルミニウムを用いることが好ましく、また、ステンレスの方がアルミニウムよりも耐熱性や耐食性に優れているので、ステンレスを用いれば、更に好ましくなる。   In addition, in the metal wire which comprises each mesh member of the said 1st collection part and the 2nd collection part, and the material of the metal fiber which comprises the nonwoven fabric of the said 3rd collection part, each collection part is washed water It is preferable to use stainless steel or aluminum in order to make it difficult to rust even if it is repeatedly washed, and stainless steel is more excellent in heat resistance and corrosion resistance than aluminum. .

このように、本発明に係るエアフィルタによれば、波板状の網状部材を複数積層した第1捕集部、平板状の網状部材を複数積層した第2捕集部、不織布からなる第3捕集部の3層構造にするとともに、第3捕集部の不織布を、横断面が矩形状の繊維から構成することで、耐熱性、捕集効率、圧力損失、ランニングコスト、取り扱い易さなどの面において優れた粉塵除去用のエアフィルタとすることができる。   As described above, according to the air filter of the present invention, the first collecting part in which a plurality of corrugated plate-like members are laminated, the second collecting part in which a plurality of flat plate-like members are laminated, and the third made of nonwoven fabric. While making the three-layer structure of the collection part, the non-woven fabric of the third collection part is composed of fibers having a rectangular cross section so that heat resistance, collection efficiency, pressure loss, running cost, ease of handling, etc. It can be set as the air filter for dust removal excellent in the surface.

以下、本発明の具体的な実施形態について、添付図面に基づき説明する。尚、図1は、本発明の一実施形態に係るエアフィルタの概略構成を示した断面図であり、図2は、図1における矢示A方向の底面図であり、図3は、矢示B方向の平面図である。   Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a cross-sectional view showing a schematic configuration of an air filter according to an embodiment of the present invention, FIG. 2 is a bottom view in the direction of arrow A in FIG. 1, and FIG. It is a top view of a B direction.

図1乃至図3に示すように、本例のエアフィルタ1は、3層構造に設けられて清浄化対象の空気が順次流通するように構成された第1捕集部11,第2捕集部12及び第3捕集部13と、これら第1捕集部11,第2捕集部12及び第3捕集部13を保持する保持機構20とから構成される。   As shown in FIGS. 1 to 3, the air filter 1 of the present example is provided with a three-layer structure, and the first collection unit 11 and the second collection unit are configured so that the air to be cleaned flows sequentially. And a holding mechanism 20 that holds the first collecting unit 11, the second collecting unit 12, and the third collecting unit 13.

尚、このエアフィルタ1の使用用途の一例としては、例えば、自動車生産ラインの塗装乾燥工程で、乾燥室内に供給される空気中から粉塵を除去するのに用いることを挙げることができるが、当該エアフィルタ1の使用用途は、これに限定されるものではない。   In addition, as an example of the usage application of this air filter 1, although it can mention using for removing dust from the air supplied in a drying chamber in the paint drying process of an automobile production line, for example, The usage application of the air filter 1 is not limited to this.

前記第1捕集部11は、多数の網目を有するようにステンレスワイヤが編まれて構成され、波板状に形成された網状部材11aを複数(本例では、8枚)備えるとともに、当該各網状部材11aが積層されて構成される。各網状部材11aは、向い合わせに配置したものを一組として4組設けられ、積層された網状部材11aの波部山側及び波部谷側の各頂部間に所定容積の積層空間Sが形成されている。尚、この網状部材11aは、例えば、ステンレスワイヤを編んで網状且つ平板状に形成した後、これを波板状とすることで形成することができる。また、網状部材11aは、その折り目(波部山側及び波部谷側の各頂部)の形成方向とステンレスワイヤの編み方向とが当該網状部材11aの表面と平行な面内で交差するように波板状に形成されている。   The first collection unit 11 is configured by knitting stainless steel wires so as to have a large number of meshes, and includes a plurality (8 in this example) of mesh-like members 11a formed in a corrugated plate shape. The mesh member 11a is laminated. Each mesh member 11a is provided as a set of four facing ones, and a laminated space S having a predetermined volume is formed between the tops of the laminated mesh members 11a on the wave part peak side and the wave part valley side. ing. The mesh member 11a can be formed, for example, by forming a mesh and a flat plate by knitting a stainless steel wire, and then forming it into a corrugated plate. Further, the mesh member 11a is waved so that the formation direction of the folds (the crests on the wave part mountain side and the wave part valley side) and the knitting direction of the stainless wire intersect in a plane parallel to the surface of the mesh member 11a. It is formed in a plate shape.

前記第2捕集部12は、ステンレスワイヤが第1捕集部11の網状部材11aよりも目の細かい多数の網目を有するように編まれて構成され、平板状に形成された網状部材12aを複数(本例では、10枚)備えるとともに、当該各網状部材12aが積層されて構成される。尚、この第2捕集部12の各網状部材12aや上記第1捕集部11の各網状部材11aには、例えば、ステンレスワイヤをメリヤス編みして構成されるデミスターフィルタと呼ばれるものを用いることができる。   The second collecting part 12 is formed by knitting a stainless steel wire so that the stainless steel wire has many meshes finer than the mesh member 11a of the first collecting part 11, and a reticulated member 12a formed in a flat plate shape. A plurality (10 in this example) are provided, and the mesh members 12a are stacked. For each mesh member 12a of the second collection part 12 and each mesh member 11a of the first collection part 11, for example, a so-called demister filter constituted by knitting stainless wire is used. Can do.

前記第3捕集部13は、横断面が矩形状をしたステンレス繊維の不織布から構成されており、第1捕集部11及び第2捕集部12を通過した、当該第1捕集部11及び第2捕集部12で捕集される粒子よりも小さい粒子を捕集可能に構成されている。尚、横断面が矩形状のステンレス繊維は、例えば、コイル状に巻かれたステンレス鋼板の端面を切削することで、当該ステンレス鋼板の板厚及び切り込み量に応じた寸法のステンレス繊維を得ることができる。   The said 3rd collection part 13 is comprised from the nonwoven fabric of the stainless fiber whose cross section was a rectangular shape, The said 1st collection part 11 which passed the 1st collection part 11 and the 2nd collection part 12 And the particle | grains smaller than the particle | grains collected by the 2nd collection part 12 are comprised so that collection is possible. Incidentally, the stainless steel fiber having a rectangular cross section can be obtained by cutting the end surface of a stainless steel plate wound in a coil shape, for example, to obtain a stainless steel fiber having a dimension corresponding to the thickness and the cutting depth of the stainless steel plate. it can.

前記保持機構20は、第1捕集部11の第2捕集部12側とは反対側の表面に設けられる第1保持金網21と、第3捕集部13の第2捕集部12側とは反対側の表面に設けられるシート状の第2保持金網22と、第2保持金網22の第3捕集部13側とは反対側の表面に設けられる第3保持金網23と、第1保持金網21及び第3保持金網23により第1捕集部11,第2捕集部12,第3捕集部13及び第2保持金網22を挟持した状態で保持する保持枠24とを備えている。   The holding mechanism 20 includes a first holding wire net 21 provided on the surface of the first collection unit 11 opposite to the second collection unit 12 side, and a second collection unit 12 side of the third collection unit 13. A sheet-like second holding wire mesh 22 provided on the opposite surface of the second holding wire mesh 22, a third holding wire mesh 23 provided on the surface of the second holding wire mesh 22 opposite to the third collecting portion 13 side, and the first A holding frame 24 that holds the first collecting unit 11, the second collecting unit 12, the third collecting unit 13, and the second holding wire mesh 22 by the holding wire mesh 21 and the third holding wire mesh 23. Yes.

前記第1保持金網21及び第3保持金網23は、第1捕集部11や第2捕集部12に比べて非常に目の粗いステンレス金網から構成され、前記第2保持金網22は、例えば、50メッシュ程度のステンレス金網から構成され、第3捕集部13の不織布を流通する空気や第3保持金網23によって当該不織布が波打ったように変形するのを防止する。   The first holding wire mesh 21 and the third holding wire mesh 23 are made of a stainless steel wire mesh that is much coarser than the first collecting portion 11 and the second collecting portion 12, and the second holding wire mesh 22 is, for example, It is made of a stainless steel mesh of about 50 mesh and prevents the nonwoven fabric from being deformed as undulated by the air flowing through the nonwoven fabric of the third collecting section 13 or the third holding wire mesh 23.

前記保持枠24は、矩形状且つ枠状をしたステンレス製の部材から構成されるとともに、両端部(第1保持金網21及び第3保持金網23側の端部)が中央側に突出して形成されており、この突出部24aの内側に第1保持金網21及び第3保持金網23の周縁部が設けられて係合することで、当該第1保持金網21及び第3保持金網23により第1捕集部11,第2捕集部12,第3捕集部13及び第2保持金網22を保持する。   The holding frame 24 is formed of a rectangular and frame-shaped stainless steel member, and both end portions (end portions on the first holding wire mesh 21 and the third holding wire mesh 23 side) are formed to protrude to the center side. The peripheral edges of the first holding wire mesh 21 and the third holding wire mesh 23 are provided on the inner side of the projecting portion 24a, and the first holding wire mesh 21 and the third holding wire mesh 23 are engaged with each other. The collection unit 11, the second collection unit 12, the third collection unit 13, and the second holding wire net 22 are held.

以上のように構成された本例のエアフィルタ1によれば、清浄化対象の空気が第1保持金網21側から供給されると、当該空気は、第1捕集部11,第2捕集部12及び第3捕集部13を順次流通し、第2捕集部12では、その各網状部材12aが第1捕集部11の各網状部材11aよりも目が細かいことから、第1捕集部11よりも小さい粒子が捕集され、第3捕集部13では、その不織布が第1捕集部11及び第2捕集部12よりも小さい粒子を捕集可能であることから、第2捕集部12よりも小さい粒子が捕集される。そして、各捕集部11,12,13で粉塵などが除去されて清浄にされた空気は、第2保持金網22を通過して第3保持金網23側から外部に排出される。   According to the air filter 1 of the present example configured as described above, when air to be cleaned is supplied from the first holding wire net 21 side, the air is collected in the first collection unit 11 and the second collection unit. Part 12 and the third collection part 13 are sequentially distributed. In the second collection part 12, each mesh member 12 a is finer than each mesh member 11 a of the first collection part 11. Particles smaller than the collection part 11 are collected, and in the third collection part 13, the nonwoven fabric can collect particles smaller than the first collection part 11 and the second collection part 12. 2 Particles smaller than the collection part 12 are collected. Then, the air that has been cleaned by removing dust and the like in each of the collection units 11, 12, 13 passes through the second holding wire mesh 22 and is discharged to the outside from the third holding wire mesh 23 side.

上述のように、本例のエアフィルタ1では、第1捕集部11及び第2捕集部12を、複数の網状部材11a,12aを積層して構成しているので、当該第1捕集部11及び第2捕集部12でも比較的細かな粉塵を除去することが可能となり、また、第1捕集部11の各網状部材11aを波板状に形成しているので、積層された網状部材11aの波部山側及び波部谷側の各頂部間に形成される積層空間S内に、除去した粉塵を堆積させることができ、これにより、捕集効率が低下したり、圧力損失が高くなるのを防止しつつ粉塵の捕集量を多くすることができる。   As described above, in the air filter 1 of the present example, the first collection unit 11 and the second collection unit 12 are configured by laminating a plurality of mesh members 11a and 12a. It is possible to remove relatively fine dust also in the part 11 and the second collection part 12, and since each mesh member 11a of the first collection part 11 is formed in a corrugated shape, it is laminated. The removed dust can be deposited in the laminated space S formed between the crests and the crests of the net member 11a, thereby reducing the collection efficiency and reducing the pressure loss. It is possible to increase the amount of dust collected while preventing the increase.

また、このような第1捕集部11及び第2捕集部12を、不織布からなる第3捕集部13の前処理部として設けているので、当該不織布によって大きな粉塵が除去されるのを防止することができ、当該不織布を目詰まりさせ難くすることができる。   Moreover, since such a 1st collection part 11 and the 2nd collection part 12 are provided as a pre-processing part of the 3rd collection part 13 which consists of a nonwoven fabric, it is that a big dust is removed by the said nonwoven fabric. It is possible to prevent the nonwoven fabric from being clogged.

また、第3捕集部13の不織布を、横断面が矩形状の金属繊維から構成しているので、当該繊維部の前後における空気の流動状態を、横断面が円形状の一般的な繊維に比べてより乱れた状態にすることができ、かかる空気の流動によって捕集効率を高めることができると考えられる。横断面が円形状の場合においても、嵩密度が高ければ、横断面が矩形状の場合と略同等に空気の乱れた領域を形成することができるが、嵩密度が高いために空孔率が低下して圧力損失が大きくなるという問題を生じる。逆に、横断面が矩形状の場合は、嵩密度が低くても、より広範囲に渡って空気の乱れた状態を形成することができ、圧力損失を大きくすることなく、捕集効率を効果的に高めることができるものと考えられる。   Moreover, since the nonwoven fabric of the 3rd collection part 13 is comprised from the metal fiber whose cross section is a rectangular shape, the flow state of the air before and behind the said fiber part is made into the general fiber whose cross section is circular. Compared to this, it is considered that the state can be more disturbed and the collection efficiency can be increased by the flow of air. Even in the case where the cross section is circular, if the bulk density is high, a region in which air is disturbed can be formed in substantially the same manner as in the case where the cross section is rectangular, but the porosity is high because the bulk density is high. This causes a problem that the pressure loss is increased. Conversely, when the cross section is rectangular, even if the bulk density is low, it is possible to form a turbulent state of air over a wider range, effectively increasing the collection efficiency without increasing the pressure loss. It is thought that it can be increased.

また、第1捕集部11及び第2捕集部12の各網状部材11a,12aや第3捕集部13の不織布、保持機構20の第1保持金網21,第2保持金網22,第3保持金網23及び保持枠24を、ステンレス製としているので、耐熱性があり、また、容易に洗浄して再使用することができるとともに、洗浄しても、当該各捕集部11,12,13による粉塵除去性能が低下することはなく、更に、洗浄水により繰り返し洗浄しても錆び難いものとすることができる。また、取り扱いに際して不便なこともない。   In addition, the respective net-like members 11a and 12a of the first collecting unit 11 and the second collecting unit 12, the nonwoven fabric of the third collecting unit 13, the first holding wire net 21, the second holding wire mesh 22 and the third of the holding mechanism 20. Since the holding wire mesh 23 and the holding frame 24 are made of stainless steel, they are heat resistant and can be easily washed and reused. The dust removal performance due to the water does not deteriorate, and it can be made difficult to rust even if washed repeatedly with washing water. There is no inconvenience in handling.

斯くして、本例のエアフィルタ1によれば、ステンレス製の第1捕集部11,第2捕集部12及び第3捕集部13からなる3層構造とするとともに、当該各捕集部11,12,13でこれらにそれぞれ対応した大きさの粒子を除去するようにしているので、空気中の粉塵などを効率的に除去して目詰まりの発生を防止することができるとともに、洗浄によって、捕集された粉塵を除去して再使用することができ、ランニングコストを大幅に削減することができる。   Thus, according to the air filter 1 of the present example, the three-layer structure including the first collection unit 11, the second collection unit 12, and the third collection unit 13 made of stainless steel is used. Since the parts 11, 12, and 13 remove particles having a size corresponding to each of them, dust in the air can be efficiently removed to prevent clogging and cleaning. Thus, the collected dust can be removed and reused, and the running cost can be greatly reduced.

したがって、本例のエアフィルタ1によれば、当該エアフィルタ1を、耐熱性、捕集効率、圧力損失、ランニングコスト、取り扱い易さなどの面において優れた粉除去用のエアフィルタ1にすることができる。   Therefore, according to the air filter 1 of the present example, the air filter 1 is made into an air filter 1 for removing powder that is excellent in terms of heat resistance, collection efficiency, pressure loss, running cost, ease of handling, and the like. Can do.

因みに、本例のエアフィルタ1と、ガラス繊維シートを備えた従来のエアフィルタについて、当該各エアフィルタに供給する空気の風速と圧力損失との関係を測定したところ、図4(a)の実線(本例のエアフィルタ1)及び破線(ガラス繊維シートを備えた従来のエアフィルタ)に示すような結果が得られた。   Incidentally, when the relationship between the air velocity of the air supplied to each air filter and the pressure loss was measured for the air filter 1 of this example and the conventional air filter provided with the glass fiber sheet, the solid line in FIG. The results shown in (Air filter 1 of this example) and broken line (conventional air filter provided with a glass fiber sheet) were obtained.

また、上記各エアフィルタについて、JIS B 9908 形式3(質量法)に基づく試験方法、JIS Z 8901 15種に基づく試験粉塵により、風速が2.5m/sの条件で、給塵量と圧力損失との関係、及び給塵量と捕集効率との関係を求めたところ、図4(b)及び図4(c)にそれぞれ示すような結果が得られた。尚、図4(b)及び図4(c)において、実線及び破線は、上記図4(a)と同様、本例のエアフィルタ1及びガラス繊維シートを備えた従来のエアフィルタをそれぞれ示しており、給塵量は、エアフィルタに向けて供給した空気中の粉塵量のことである。   In addition, for each of the above air filters, the dust supply amount and pressure loss were measured under the condition that the wind speed was 2.5 m / s by the test method based on JIS B 9908 Type 3 (mass method) and the test dust based on JIS Z 8901 15 types. And the relationship between the amount of dust supply and the collection efficiency were obtained, and the results shown in FIGS. 4B and 4C were obtained. 4 (b) and 4 (c), the solid line and the broken line indicate the air filter 1 of this example and the conventional air filter provided with the glass fiber sheet, respectively, as in FIG. 4 (a). The dust supply amount is the amount of dust in the air supplied toward the air filter.

そして、このようにして得られた各グラフにおいて、本例のエアフィルタ1と、ガラス繊維シートを備えた従来のエアフィルタとを対比すると、本例のエアフィルタ1は、圧力損失が低く、また、捕集効率はさほど変わらないということを容易に理解することができる。したがって、このグラフからも、本例のエアフィルタ1は、捕集効率や圧力損失の面において優れていると言える。   And in each graph obtained in this way, when the air filter 1 of this example and the conventional air filter provided with the glass fiber sheet are compared, the air filter 1 of this example has low pressure loss, It can be easily understood that the collection efficiency does not change so much. Therefore, it can be said from this graph that the air filter 1 of this example is excellent in terms of collection efficiency and pressure loss.

以上、本発明の一実施形態について説明したが、本発明の採り得る具体的な態様は、何らこれに限定されるものではない。   As mentioned above, although one Embodiment of this invention was described, the specific aspect which this invention can take is not limited to this at all.

本例のエアフィルタ1は、自動車生産ラインの塗装乾燥工程で用いるべく、ステンレスから構成して耐熱性や耐食性に優れたものにしたが、耐熱性や耐食性がさほど要求されない場合には、第1捕集部11及び第2捕集部12の各網状部材11a,12aを、ステンレスワイヤに代えてアルミニウムワイヤから構成したり、第3捕集部13の不織布を、ステンレス繊維に代えてアルミニウム繊維から構成しても良い。   The air filter 1 of this example is made of stainless steel and is excellent in heat resistance and corrosion resistance so that it can be used in the paint drying process of the automobile production line. The mesh members 11a and 12a of the collection unit 11 and the second collection unit 12 are made of aluminum wires instead of stainless steel wires, or the nonwoven fabric of the third collection unit 13 is made of aluminum fibers instead of stainless steel fibers. It may be configured.

また、上例では、第1捕集部11における網状部材11aの積層数を8枚とし、第2捕集部12における網状部材12aの積層数を10枚としたが、各捕集部11,12における網状部材11a,12aの積層数は、これらに限定されるものではない。   In the above example, the number of the net-like members 11a stacked in the first collecting unit 11 is set to eight, and the number of the net-like members 12a stacked in the second collecting unit 12 is set to ten. The number of layers of the mesh members 11a, 12a in 12 is not limited to these.

また、第1捕集部11における各網状部材11aの積層方法は、上例に限定されるものではなく、各網状部材11aを、その折り目の形成方向がそれぞれ当該網状部材11aの表面と平行な面内で交差するように積層しても良い。この場合においても、網状部材11aの波部山側の頂部上方及び波部谷側の頂部下方に所定容積の空間が形成されるので、上記と同様、当該空間内に、除去した粉塵を堆積させて、捕集効率が低下したり、圧力損失が高くなるのを防止しつつ粉塵の捕集量を多くすることができる。   Moreover, the lamination | stacking method of each mesh member 11a in the 1st collection part 11 is not limited to the above example, The formation direction of each mesh member 11a is parallel to the surface of the mesh member 11a, respectively. You may laminate | stack so that it may cross | intersect in a plane. Even in this case, a predetermined volume of space is formed above the top of the mesh member 11a on the corrugated mountain side and below the top of the corrugated valley side, so that the removed dust is deposited in the space as described above. It is possible to increase the amount of dust collected while preventing the collection efficiency from decreasing and the pressure loss from increasing.

本発明の一実施形態に係るエアフィルタの概略構成を示した断面図である。It is sectional drawing which showed schematic structure of the air filter which concerns on one Embodiment of this invention. 図1における矢示A方向の底面図である。It is a bottom view of the arrow A direction in FIG. 図3は、矢示B方向の平面図である。FIG. 3 is a plan view of the arrow B direction. 本例のエアフィルタと、ガラス繊維シートを備えた従来のエアフィルタとを比較するためのグラフであって、風速と圧力損失との関係、給塵量と圧力損失との関係、及び給塵量と捕集効率との関係をそれぞれ示したグラフである。It is a graph for comparing the air filter of this example with the conventional air filter provided with the glass fiber sheet, Comprising: The relationship between a wind speed and pressure loss, the relationship between dust supply amount and pressure loss, and dust supply amount It is the graph which showed the relationship between and collection efficiency, respectively.

符号の説明Explanation of symbols

1 エアフィルタ
11 第1捕集部
11a 網状部材
12 第2捕集部
12a 網状部材
13 第3捕集部
20 保持機構
21 第1保持金網
22 第2保持金網
23 第3保持金網
24 保持枠
DESCRIPTION OF SYMBOLS 1 Air filter 11 1st collection part 11a Mesh member 12 2nd collection part 12a Mesh member 13 3rd collection part 20 Holding mechanism 21 1st holding wire net 22 2nd holding wire mesh 23 3rd holding wire mesh 24 Holding frame

Claims (2)

第1捕集部,第2捕集部及び第3捕集部の3層構造からなり、清浄化対象の空気が該第1捕集部,第2捕集部及び第3捕集部を順次流通するように構成されたエアフィルタであって、
前記第1捕集部は、多数の網目を有するように金属ワイヤを編んで構成され且つ波板状に形成された複数の網状部材が積層状に設けられ、
前記第2捕集部は、前記第1捕集部の網状部材よりも目の細かい多数の網目を有するように金属ワイヤを編んで構成され且つ平板状に形成された複数の網状部材が積層状に設けられ、
前記第3捕集部は、横断面が矩形状をした金属繊維の不織布から構成されてなり、
前記第3捕集部は、前記第1捕集部及び第2捕集部を通過した、該第1捕集部及び第2捕集部で捕集される粒子よりも小さい粒子を捕集するように構成されてなることを特徴とするエアフィルタ。
It consists of a three-layer structure of a first collection part, a second collection part, and a third collection part, and the air to be cleaned sequentially passes through the first collection part, the second collection part, and the third collection part. An air filter configured to circulate,
The first collection part is configured by knitting metal wires so as to have a large number of meshes, and a plurality of mesh members formed in a corrugated shape are provided in a laminated form,
The second collection part is formed by knitting metal wires so as to have a lot of meshes finer than the mesh member of the first collection part, and a plurality of mesh members formed in a flat plate shape are laminated. Provided in
The third collecting part is composed of a non-woven metal fiber having a rectangular cross section,
The third collection unit collects particles smaller than the particles collected by the first collection unit and the second collection unit that have passed through the first collection unit and the second collection unit. An air filter configured as described above.
前記第1捕集部及び第2捕集部の各網状部材を構成する金属ワイヤ、並びに前記第3捕集部の不織布を構成する金属繊維は、それぞれステンレスから構成されてなることを特徴とする請求項1記載のエアフィルタ。   The metal wires constituting the respective net members of the first collection part and the second collection part and the metal fibers constituting the nonwoven fabric of the third collection part are each made of stainless steel. The air filter according to claim 1.
JP2005162421A 2005-06-02 2005-06-02 Air filter Active JP4777690B2 (en)

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JP2010075832A (en) * 2008-09-25 2010-04-08 Nichidai Filter Corp Filter for high speed filtration
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