JP7021761B2 - Metal filter and method for manufacturing the metal filter - Google Patents

Metal filter and method for manufacturing the metal filter Download PDF

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JP7021761B2
JP7021761B2 JP2016239322A JP2016239322A JP7021761B2 JP 7021761 B2 JP7021761 B2 JP 7021761B2 JP 2016239322 A JP2016239322 A JP 2016239322A JP 2016239322 A JP2016239322 A JP 2016239322A JP 7021761 B2 JP7021761 B2 JP 7021761B2
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metal filter
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groove
air
piece
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JP2018094475A (en
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輝夫 渡邉
秀満 渡邉
泰之 渡邉
剛文 渡邉
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APS JAPAN CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/14—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces arranged in a star shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2035—Arrangement or mounting of filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
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  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Description

本発明は、例えば光触媒、活性炭、芳香剤、二酸化マンガンなどの触媒層や吸着層などが表面に形成された流体の清浄化フィルタや厨房等のグリスフィルタとして好適に用いられる金属フィルタに関する。 The present invention relates to a metal filter suitably used as a fluid cleaning filter having a catalyst layer such as a photocatalyst, activated carbon, fragrance, manganese dioxide or the like or an adsorption layer formed on the surface thereof, or a grease filter in a kitchen or the like.

この種のフィルタとして、例えば光触媒フィルタは、空気が光触媒層を通過する過程で、紫外線で励起した光触媒により空気中の有害物を分解・除去するフィルタであり、従来の構造としては、金属メッシュや金属網などの板状の基材の表面に、酸化チタンなどを担持させた光触媒層を形成するものが提案されている。しかし、金属メッシュや金属網を基材としたフィルタは、通過する空気が光触媒層に接する面積を十分に確保することができず、一枚で十分な清浄化効果を得ることができないという課題がある。 As a filter of this type, for example, a photocatalyst filter is a filter that decomposes and removes harmful substances in the air by a photocatalyst excited by ultraviolet rays in the process of passing air through the photocatalyst layer. It has been proposed to form a photocatalyst layer on which titanium oxide or the like is supported on the surface of a plate-shaped base material such as a metal mesh. However, a filter using a metal mesh or a metal net as a base material cannot secure a sufficient area for the passing air to contact the photocatalyst layer, and there is a problem that a sufficient cleaning effect cannot be obtained by one sheet. be.

これに対し、例えば、特許文献１では、アルミナ、コージライト、ムライト、ジルコニア、シリカ、マグネシア等の金属酸化物系のセラミック多孔質体や、炭化ケイ素、窒化ケイ素等の非酸化物系のセラミック多孔質体よりなる板状の基材に、酸化チタンなどを担持させた光触媒層を形成するものが提案されている。また、特許文献２では、チタン箔に、非周期的パターンのエッチング処理を施して表裏貫通する多数の微細流路を有する非周期性海綿構造とし、これに陽極酸化処理を施した後、加熱処理を施して表面に酸化チタンベースを形成し、当該酸化チタンベースにアナターゼ型酸化チタン粒子を焼き付けて光触媒層を形成したものが提案されている。 On the other hand, for example, in Patent Document 1, metal oxide-based ceramic porous bodies such as alumina, cordylite, mulite, zirconia, silica, and magnesia, and non-oxide-based ceramic porous bodies such as silicon carbide and silicon nitride are porous. It has been proposed to form a photocatalyst layer on which titanium oxide or the like is supported on a plate-shaped base material made of a ceramic. Further, in Patent Document 2, the titanium foil is etched in an aperiodic pattern to form an aperiodic spongy structure having a large number of fine flow paths penetrating the front and back, and the titanium foil is anodized and then heat-treated. A titanium oxide base is formed on the surface thereof, and anodized titanium oxide particles are baked onto the titanium oxide base to form a photocatalyst layer.

これら特許文献１、２のように、基材に複雑で微細な流路を形成し、その表面に光触媒層を被覆形成することで、通過する空気等の流体が光触媒層に接する面積を確保することが可能である。しかし、このような微細な流路に流体を流通させる際の圧損が大きくなり、流体の通過効率が低下してしまうという問題がある。また、微細流路の内部には紫外線が十分に行き渡らず、清浄化効果にも一定の限界がある。さらに、特許文献１のセラミックフィルタは材料や製造コストが高く、
形状の自由度が低く、衝撃等で割れないようにデリケートに扱う必要があり、特許文献２に記載のフィルタもエッチング処理に費用が嵩み、いずれも生産コスト低減に限界があるという問題もある。 As in Patent Documents 1 and 2, a complex and fine flow path is formed on the base material, and a photocatalyst layer is coated on the surface thereof to secure an area where a fluid such as air passing through is in contact with the photocatalyst layer. It is possible. However, there is a problem that the pressure loss when the fluid is circulated in such a fine flow path becomes large and the passage efficiency of the fluid decreases. In addition, ultraviolet rays do not sufficiently spread inside the fine flow path, and there is a certain limit to the cleaning effect. Further, the ceramic filter of Patent Document 1 has a high material and manufacturing cost, and has a high material and manufacturing cost.
The degree of freedom of the shape is low, it is necessary to handle it delicately so that it will not be cracked by impact, etc., and the filter described in Patent Document 2 also has a problem that the etching process is expensive and there is a limit to the reduction of production cost. ..

また、厨房等の排煙中の油脂分を取り除くフィルタとして金属製のグリスフィルタが使用されているが（例えば、特許文献３参照。）、従来からの構造は、枠体内に金属メッシュや金属網、パンチングメタルなどの板状の基材を複数組み合わせてセットしたものである。しかし、このような基材は製作コストがかかるうえ、排煙の通過抵抗も大きく、油脂分をより効率良く回収できるものが求められている。 Further, a metal grease filter is used as a filter for removing oils and fats in smoke exhaust from a kitchen or the like (see, for example, Patent Document 3), but the conventional structure has a metal mesh or a metal net inside the frame. , Punching metal and other plate-shaped base materials are combined and set. However, such a base material is required to have a high manufacturing cost, a large resistance to the passage of flue gas, and a material capable of recovering fats and oils more efficiently.

実用新案登録第３１５０８９４号公報Utility Model Registration No. 3150894 特開２０１１－１８３２４０号公報Japanese Unexamined Patent Publication No. 2011-183240 特開２００３－３３６８７６号公報Japanese Patent Application Laid-Open No. 2003-336876

そこで、本発明が前述の状況に鑑み、解決しようとするところは、通過する空気等の流体と触媒層や吸着層等との接触面積を十分に確保でき、流体の通過抵抗、すなわち圧損を小さく抑えて通過効率も向上させることができ、形状の自由度も高く、優れた清浄化効果等を効率よく得ることができる金属フィルタを低コストに実現する点にある。 Therefore, in view of the above-mentioned situation, the present invention seeks to solve the problem by ensuring a sufficient contact area between the passing fluid such as air and the catalyst layer, the adsorption layer, etc., and reducing the passage resistance of the fluid, that is, the pressure loss. The point is to realize a metal filter at low cost, which can suppress and improve the passing efficiency, have a high degree of freedom in shape, and can efficiently obtain an excellent cleaning effect and the like.

すなわち本発明は、以下の発明を包含する。 That is, the present invention includes the following inventions.

（１） 列状の山部と谷部が交互に複数形成された金属板本体の前記山部と谷部の一方又は双方に、流体を通過させるための列方向に延びる貫通溝を有し、且つ、該貫通溝の開口縁部に、当該山部又は谷部の凸面側に起立する起立片を有することを特徴とする金属フィルタ。 (1) One or both of the peaks and valleys of the metal plate body in which a plurality of rows of peaks and valleys are alternately formed has through grooves extending in the row direction for allowing fluid to pass therethrough. Moreover, the metal filter is characterized by having an upright piece standing on the convex side of the mountain portion or the valley portion at the opening edge portion of the through groove.

（２） 前記起立片が、前記貫通溝を臨み互いに対向して列方向に延びる一対の開口縁部の双方にそれぞれ設けられている（１）記載の金属フィルタ。 (2) The metal filter according to (1), wherein the upright piece is provided on both of a pair of opening edges extending in a row direction facing the through groove and facing each other.

（３） 前記開口縁部の双方に設けられる起立片が、各開口縁部のほぼ全長にわたって延びる長片である（２）記載の金属フィルタ。 (3) The metal filter according to (2), wherein the standing pieces provided on both sides of the opening edge are long pieces extending over almost the entire length of each opening edge.

（４） 前記開口縁部の双方に設けられる起立片の高さ寸法が、当該貫通溝の列方向に直交する幅方向の寸法の略半分の寸法である（２）又は（３）記載の金属フィルタ。 (4) The metal according to (2) or (3), wherein the height dimension of the standing piece provided on both sides of the opening edge is approximately half the dimension in the width direction orthogonal to the row direction of the through groove. filter.

（５） 前記起立片が、切り起こし片である（４）記載の金属フィルタ。 (5) The metal filter according to (4), wherein the upright piece is a cut-up piece.

（６） 前記起立片が、前記山部と前記谷部とを連結している中間壁部に対して略面一に突出している（１）～（５）の何れかに記載の金属フィルタ。 (6) The metal filter according to any one of (1) to (5), wherein the upright piece projects substantially flush with respect to the intermediate wall portion connecting the mountain portion and the valley portion.

（７） 前記山部又は谷部に、前記貫通溝が列方向に間隔をおいて複数設けられている（１）～（６）の何れかに記載の金属フィルタ。 (7) The metal filter according to any one of (1) to (6), wherein a plurality of through grooves are provided in the mountain portion or the valley portion at intervals in the row direction.

以上にしてなる本願発明に係る金属フィルタは、列状の山部と谷部が交互に複数形成された金属板本体の前記山部と谷部の一方又は双方に、流体を通過させるための列方向に延びる貫通溝を有し、且つ、該貫通溝の開口縁部に、当該山部又は谷部の凸面側に起立する起立片を有するので、山部と谷部による凹凸表面により大きな表面積を備えるとともに、その山部又は谷部に形成される貫通溝の開口縁部の起立片の分も表面積が増え、凹凸表面にあたって貫通溝を通過することとなる流体と当該金属フィルタ表面との接触面積を十分に確保することができるため、たとえば光触媒、活性炭、芳香剤、二酸化マンガンなどの触媒層や吸着層などが表面に形成される場合にも、触媒反応や吸着作用が効率よく行われる。 The metal filter according to the present invention as described above is a row for allowing fluid to pass through one or both of the peaks and valleys of a metal plate body in which a plurality of rows of peaks and valleys are alternately formed. Since it has a through groove extending in the direction and has an upright piece standing on the convex side of the mountain portion or the valley portion at the opening edge of the through groove, a larger surface area is provided on the uneven surface by the mountain portion and the valley portion. In addition to this, the surface area of the upright piece of the opening edge of the through groove formed in the mountain or valley increases, and the contact area between the fluid that hits the uneven surface and passes through the through groove and the surface of the metal filter. Therefore, even when a catalyst layer such as a photocatalyst, activated carbon, fragrance, manganese dioxide, or an adsorption layer is formed on the surface, the catalytic reaction and the adsorption action are efficiently performed.

また、従来のような微細流路を流通させるものではなく、凹凸表面にあたった流体がそのまま貫通溝を通過する構造であり、且つ起立片も山部又は谷部の凸面側に起立しているため、流体の通過抵抗がほとんど生じなく、圧損を小さく抑えることができ、通過効率が向上して優れた清浄化効果や油脂分の除去効果を効率よく得ることができる。また、凹凸表面及び上記凸面側に起立する起立片によって表面積を稼いでいるため、特に光触媒の触媒層を表面に形成する場合でも、紫外線を当該触媒層に効率よく照射することができ、従来のような微細流路内部に紫外線を照射するものに比べ、格段に優れた清浄化効果が得られる。 In addition, it does not circulate through the fine flow path as in the past, but has a structure in which the fluid that hits the uneven surface passes through the through groove as it is, and the standing piece also stands on the convex side of the mountain portion or the valley portion. Therefore, the passage resistance of the fluid is hardly generated, the pressure loss can be suppressed to a small value, the passage efficiency is improved, and an excellent cleaning effect and an effect of removing oils and fats can be efficiently obtained. Further, since the surface area is increased by the uneven surface and the standing pieces standing on the convex surface side, even when the catalyst layer of the photocatalyst is formed on the surface, the ultraviolet rays can be efficiently irradiated to the catalyst layer, which is a conventional method. A significantly superior cleaning effect can be obtained as compared with the one that irradiates the inside of such a fine flow path with ultraviolet rays.

更に、凹凸状の金属板に貫通溝と起立片が形成される構造であるため、従来のセラミックフィルタやエッチング処理を必要とするフィルタに比べ、プレス等の機械加工により生産コストを低く抑えることが可能である。またセラミック製に比べて加工後に変形させることも容易であり、形状の自由度が高い。 Furthermore, since the structure is such that through grooves and upright pieces are formed on the uneven metal plate, the production cost can be kept low by machining such as pressing compared to conventional ceramic filters and filters that require etching. It is possible. In addition, it is easier to deform after processing compared to ceramic products, and the degree of freedom in shape is high.

また、前記起立片が、前記貫通溝を臨み互いに対向して列方向に延びる一対の開口縁部の双方にそれぞれ設けられているものでは、貫通溝を通過する流体に対して双方から効率よく接触することができるので、圧損を抑えつつ流体との接触面積をより確実に確保できる。 Further, when the standing pieces are provided on both of the pair of opening edges extending in the row direction facing the through groove and facing each other, the standing pieces efficiently contact the fluid passing through the through groove from both sides. Therefore, it is possible to more reliably secure the contact area with the fluid while suppressing the pressure loss.

特に、前記開口縁部の双方に設けられる起立片が、各開口縁部のほぼ全長にわたって延びる長片であるものでは、上記流体との接触面積をより確実に確保できる。 In particular, when the standing pieces provided on both sides of the opening edge are long pieces extending over almost the entire length of each opening edge, the contact area with the fluid can be more reliably secured.

更に、前記開口縁部の双方に設けられる起立片の高さ寸法が、当該貫通溝の列方向に直交する幅方向の寸法の略半分の寸法であるものでは、起立片による圧損を抑えつつ効率よく接触面積を確保できる。特に、起立片を切り起こし片とする場合には、母材を無駄にすることなく、接触面積を最大限に維持することができる。 Further, if the height dimension of the upright piece provided on both sides of the opening edge is approximately half the dimension in the width direction orthogonal to the row direction of the through groove, the efficiency is suppressed while suppressing the pressure loss due to the upright piece. A good contact area can be secured. In particular, when the standing piece is cut and raised, the contact area can be maintained to the maximum without wasting the base material.

また、前記起立片が切り起こし片であるものでは、当該起立片をろう付け等することなく機械加工で効率よく低コストに形成することができる。 Further, when the upright piece is a cut-up piece, the upright piece can be efficiently formed at low cost by machining without brazing or the like.

また、前記起立片が、前記山部と前記谷部とを連結している中間壁部に対して略面一に突出しているものでは、流体の通過抵抗をより小さく抑えることができ、流体の圧損を抑え、通過効率が向上し、優れた清浄化効果や油脂分の除去効果を効率よく得ることができる。 Further, when the upright piece projects substantially flush with respect to the intermediate wall portion connecting the mountain portion and the valley portion, the passage resistance of the fluid can be suppressed to a smaller value, and the fluid can be reduced. It is possible to suppress pressure loss, improve passage efficiency, and efficiently obtain an excellent cleaning effect and an effect of removing oils and fats.

また、前記山部又は谷部に、前記貫通溝が列方向に間隔をおいて複数設けられているものでは、間に母材が橋渡しされる構造となるため保形性が高まり、構造的に用途に応じた必要な保形性を出すことができる。 Further, in the case where a plurality of the through grooves are provided at intervals in the row direction in the mountain portion or the valley portion, the structure is such that the base metal is bridged between them, so that the shape retention is improved and structurally. It is possible to obtain the required shape retention according to the application.

本発明の代表的実施形態にかかる金属フィルタを示す斜視図。The perspective view which shows the metal filter which concerns on the typical embodiment of this invention. 同じく金属フィルタの平面図。Also a plan view of a metal filter. 同じく正面図。Also front view. 同じく要部の断面図。Similarly, a cross-sectional view of the main part. 同じく要部の斜視図。Similarly, a perspective view of the main part. 同じく金属フィルタを光触媒フィルタとして構成した例の分解斜視図。An exploded perspective view of an example in which a metal filter is also configured as a photocatalytic filter. 同じく本発明の一例としての光触媒フィルタの斜視図。Similarly, a perspective view of a photocatalytic filter as an example of the present invention. 同じく光触媒フィルタを組み込んだ空気清浄機の分解斜視図。An exploded perspective view of an air purifier that also incorporates a photocatalytic filter. 同じく空気清浄機における空気の流れを示す要部の説明図。An explanatory diagram of a main part showing the flow of air in an air purifier. （ａ）は同じく金属フィルタの他の使用形態を示す斜視図、（ｂ）は同じく金属フィルタのさらに他の使用形態を示す斜視図。(A) is a perspective view showing another usage mode of the metal filter, and (b) is a perspective view showing still another usage mode of the metal filter. 同じく金属フィルタのさらに他の使用形態を示す斜視図。The perspective view which also shows the other usage form of a metal filter. （ａ）は同じく金属フィルタの変形例を示す要部の断面図、（ｂ）は同じく金属フィルタの他の変形例を示す要部の断面図。(A) is a cross-sectional view of a main part showing a modified example of the metal filter, and (b) is a cross-sectional view of a main part showing another modified example of the metal filter. 同じく金属フィルタのさらに他の変形例を示す要部の斜視図。A perspective view of a main part showing still another modification of the metal filter.

次に、本発明の実施形態を添付図面に基づき詳細に説明する。 Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

本発明の金属フィルタ１は、図１～図５に示すように、列状の山部２０と谷部２１が交互に複数形成された金属板本体２の前記山部２０と谷部２１の一方又は双方に、流体を通過させるための列方向に延びる貫通溝１０を設けるとともに、該貫通溝１０の開口縁部１１に、当該山部２０又は谷部２１の凸面側に起立する起立片３０、３１を設けたものである。 As shown in FIGS. 1 to 5, the metal filter 1 of the present invention has one of the peaks 20 and the valleys 21 of the metal plate body 2 in which a plurality of rows of peaks 20 and valleys 21 are alternately formed. Alternatively, both of the through grooves 10 extending in the row direction for allowing the fluid to pass through are provided, and the upright piece 30 standing on the convex surface side of the mountain portion 20 or the valley portion 21 at the opening edge portion 11 of the through groove 10. 31 is provided.

金属フィルタ１は、図示しないが、さらに表面に光触媒、活性炭、芳香剤、二酸化マンガンなどの触媒層や吸着層などを形成した清浄化フィルタとして構成することや、このような触媒層などを形成することなく、金属材のまま厨房等のグリスフィルタとしても好適に用いることができる。触媒層や吸着層は、山部２０と谷部２１よりなる凹凸形状に形成する前の平板状態の表面に形成してもよいし、凹凸形状に形成した後の凹凸表面に形成してもよい。 Although not shown, the metal filter 1 is further configured as a cleaning filter having a catalyst layer such as a photocatalyst, activated carbon, fragrance, manganese dioxide, or an adsorption layer formed on the surface thereof, or forms such a catalyst layer. It can also be suitably used as a grease filter in a kitchen or the like as it is as a metal material. The catalyst layer and the adsorption layer may be formed on the surface of the flat plate state before being formed into the uneven shape consisting of the peaks 20 and the valleys 21, or may be formed on the uneven surface after being formed into the uneven shape. ..

例えば、山部２０と谷部２１よりなる凹凸形状をプレス加工で成形する場合においては、あらかじめ表面に触媒層などを形成していると該層が剥がれてしまったり形状精度を狂わせる原因になることもある。これを避けるためには、凹凸形状に加工した後に上記層を形成すればよい。 For example, in the case of forming an uneven shape consisting of a mountain portion 20 and a valley portion 21 by press working, if a catalyst layer or the like is formed on the surface in advance, the layer may be peeled off or the shape accuracy may be disturbed. There is also. In order to avoid this, the above layer may be formed after being processed into an uneven shape.

本発明の金属フィルタ１は、流体が山部２０及び谷部２１の凹凸表面にあたって貫通溝１０を通過するように使用することができる。すなわち、従来の凹凸形状のフィルタ、例えば車の触媒に用いる金属フィルタは、同じように山部と谷部を有する凹凸形状のフィルタを渦巻状に巻き付けて構成されるが、流体は山部又は谷部が延びる方向に沿って通過させるものであるが、本発明の金属フィルタ１は、山部２０、谷部２１に形成した貫通溝１０を通じて、流体を凹凸形状の一方の面から他方の面に通過させるものである。 The metal filter 1 of the present invention can be used so that the fluid hits the uneven surface of the peak portion 20 and the valley portion 21 and passes through the through groove 10. That is, a conventional concave-convex-shaped filter, for example, a metal filter used for a car catalyst, is configured by spirally winding a concave-convex-shaped filter having peaks and valleys, but the fluid is peaks or valleys. The metal filter 1 of the present invention allows the fluid to pass from one surface of the concave-convex shape to the other surface through the through grooves 10 formed in the mountain portion 20 and the valley portion 21, although the portion is passed along the extending direction. It is something to pass through.

山部２０又は谷部２１の延びる方向に流体を供給又は排出してもよいが、供給後又は排出前の流体は各貫通溝１０を通過して一方の面から他方の面に移動するように流通する。凹凸面に直交する方向、すなわち山部２０又は谷部２１の延びる方向と、山部２０及び谷部２１が並ぶ並び方向との双方に直交する方向に、流体を供給又は排出し、各貫通溝１０に流体を通過させるようにしてもよい。流体の流通形態は種々可能であるが、いずれにしても山部２０又は谷部２１に形成された貫通溝１０を流体が通過するように構成される。 The fluid may be supplied or discharged in the extending direction of the mountain portion 20 or the valley portion 21, but the fluid after supply or before discharge may pass through each through groove 10 and move from one surface to the other surface. To circulate. A fluid is supplied or discharged in a direction orthogonal to the uneven surface, that is, a direction orthogonal to both the extending direction of the mountain portion 20 or the valley portion 21 and the arrangement direction in which the mountain portion 20 and the valley portion 21 are lined up, and each through groove is provided. The fluid may be allowed to pass through 10. The flow form of the fluid can be various, but in any case, the fluid is configured to pass through the through groove 10 formed in the mountain portion 20 or the valley portion 21.

このような金属フィルタ１は、山部２０と谷部２１による凹凸表面によって、流体に接触する大きな表面積を備えると同時に、その山部２０又は谷部２１に形成される貫通溝１０の内面、開口縁部の起立片３０／３１の分も、流体との接触面積が増えている。したがって、たとえば触媒層や吸着層などが表面に形成される場合、触媒反応や吸着作用が効率よく行われることになる。 Such a metal filter 1 has a large surface area in contact with a fluid due to the uneven surface formed by the peaks 20 and the valleys 21, and at the same time, the inner surface and openings of the through groove 10 formed in the peaks 20 or the valleys 21. The contact area with the fluid is also increased by the amount of the standing piece 30/31 at the edge. Therefore, for example, when a catalyst layer or an adsorption layer is formed on the surface, the catalytic reaction or the adsorption action is efficiently performed.

また、起立片３０／３１も山部２０又は谷部２１の凸面側に起立しているため、凹凸表面にあたる流体は滞りなく貫通溝１０を通過して抜けてゆき、流体の通過抵抗がほとんどなく、圧損が小さく抑えられる。したがって、優れた清浄化効果が得られるとともに、不燃性でありグリスフィルタとして用いる場合にも油脂分の除去効果を効率よく得ることができる。また、光触媒の触媒層を表面に形成する場合においては、起立片３０／３１が紫外線の進入を邪魔することなく、凹凸表面や貫通溝内面、起立片３０／３１の表面に形成される当該触媒層に紫外線を効率よく照射することができる。 Further, since the standing piece 30/31 also stands on the convex side of the mountain portion 20 or the valley portion 21, the fluid corresponding to the uneven surface passes through the through groove 10 without delay and escapes, and there is almost no fluid passage resistance. , Pressure loss can be suppressed to a small extent. Therefore, an excellent cleaning effect can be obtained, and the effect of removing oils and fats can be efficiently obtained even when the grease filter is used because it is nonflammable. Further, when the catalyst layer of the photocatalyst is formed on the surface, the upright piece 30/31 is formed on the uneven surface, the inner surface of the through groove, and the surface of the upright piece 30/31 without disturbing the entry of ultraviolet rays. The layer can be efficiently irradiated with ultraviolet rays.

山部２０及び谷部２１よりなる凹凸形状、及び起立片３０／３１は、プレス加工により低コストに形成することができる。特に起立片３０／３１は、凹凸形状のプレス加工と同時、または直後に、打ち抜きによる切り起こし加工により、効率よく形成することができる。勿論、このような加工方法、加工手順に限定されるものではない。 The uneven shape composed of the mountain portion 20 and the valley portion 21 and the standing piece 30/31 can be formed at low cost by press working. In particular, the upright piece 30/31 can be efficiently formed by cutting and raising by punching at the same time as or immediately after pressing the uneven shape. Of course, it is not limited to such processing methods and procedures.

本例では、山部２０及び谷部２１を角張った方形状に曲げ加工して全体として凹凸形状が構成されているが、山部及び谷部がなだらかな連続した曲面形状に曲げ加工して構成したものでもよい。「山部」及び「谷部」は、凹凸形状の凹凸面の一方の面を上面、他方の面を下面として、上面側に突出した部位を「山部」、下面側に突出した部位を「谷部」とする。 In this example, the peaks 20 and the valleys 21 are bent into an angular square shape to form an uneven shape as a whole, but the peaks and valleys are bent into a gently continuous curved surface. It may be the one that was done. In the "mountain part" and "valley part", one surface of the uneven surface of the uneven shape is the upper surface, the other surface is the lower surface, the part protruding to the upper surface side is the "mountain part", and the part protruding to the lower surface side is "mountain part". Tanibe ".

貫通溝１０は、本例では山部２０及び谷部２１の全てに形成しているが、これに何ら限定されない。例えば、山部２０のみ、或いは谷部２１のみでもよい。特に、本例のように山部２０（谷部２１）の頂面（底面）に向けて徐々に幅が狭くなるテーパー状の凹凸形状の場合において、例えば山部２０側から流体を通すのであれば、図１２に示すように、谷部２１側にのみ貫通溝１０を設けるようにすれば、勿論、山部２０側に貫通溝が無い分だけ流通抵抗が増すが、流体は山部２０にあたって流れが乱されるとともに、必ず谷部２１に至るしだいに狭くなる空間を通ることになるため、その過程で流体は中間壁部２２に押し付けられるように接し、接触による効果をより高めることができる。 The through groove 10 is formed in all of the mountain portion 20 and the valley portion 21 in this example, but is not limited thereto. For example, only the mountain portion 20 or only the valley portion 21 may be used. In particular, in the case of a tapered concave-convex shape in which the width gradually narrows toward the top surface (bottom surface) of the mountain portion 20 (valley portion 21) as in this example, for example, if the fluid is passed from the mountain portion 20 side. For example, as shown in FIG. 12, if the through groove 10 is provided only on the valley 21 side, of course, the flow resistance increases due to the absence of the through groove on the mountain portion 20, but the fluid hits the mountain portion 20. As the flow is disturbed, the fluid always passes through a space that gradually narrows to the valley portion 21, so that the fluid comes into contact with the intermediate wall portion 22 so as to be pressed against it in the process, and the effect of the contact can be further enhanced. ..

また、貫通溝１０は、本例のように山部２０及び谷部２１の双方に設ける場合、或いは山部２０又は谷部２１の一方にのみ設ける場合であっても、すべての山部２０又はすべての谷部２１に設ける必要はない。一つ又は二つ以上の山部２０又は谷部２１を飛ばして形成してもよい。用途や大きさ等に応じた適した保形性や流通抵抗が得られるように、適宜貫通溝１０の寸法や数、配置などを決めることができる。 Further, even if the through groove 10 is provided in both the mountain portion 20 and the valley portion 21 as in this example, or even if it is provided in only one of the mountain portion 20 or the valley portion 21, all the mountain portions 20 or the valley portion 21 are provided. It is not necessary to provide it in all valleys 21. One or more mountain portions 20 or valley portions 21 may be skipped and formed. The dimensions, number, arrangement, and the like of the through grooves 10 can be appropriately determined so as to obtain suitable shape retention and distribution resistance according to the application, size, and the like.

本例では、貫通溝１０を列方向に長い溝とし、例えば図１０（ａ）、（ｂ）や図１１に示すように全体を屈曲変形させて図示しない枠体に嵌め込んで使用する等できるように、変形容易となるように構成されているが、このような貫通溝１０に形態以外にも、例えば列に直交する幅方向に長い溝を列方向に間隔をあけて複数断続的に設けたものでも勿論よい。 In this example, the through groove 10 is a long groove in the row direction, and as shown in FIGS. 10 (a), 10 (b) and 11, for example, the entire groove can be bent and deformed and fitted into a frame (not shown) for use. As described above, the through groove 10 is configured to be easily deformed, but in addition to the form, for example, a plurality of long grooves in the width direction orthogonal to the row are provided intermittently at intervals in the row direction. Of course, it may be an orthogonal one.

本例では、一つの山部２０又は谷部２１に対して、列方向に長い貫通溝１０を二つ、間隔をあけて連設し、間に形成される橋渡し部２３（当該山部２０又は谷部２１における貫通溝１０間の残部）によって全体として保形性を維持できる構造としている。ただし、板厚やその他の寸法、求められる保形性の程度に応じて、貫通溝１０の長さや間隔を適宜決めることができ、例えば、列方向に貫通溝１０を三つ以上連設してもよいし、一つのみ構成したものでもよい。 In this example, two through grooves 10 long in the row direction are connected to one mountain portion 20 or valley portion 21 at intervals, and a bridging portion 23 formed between them (the mountain portion 20 or the valley portion 20). The structure is such that the shape retention can be maintained as a whole by the remaining portion between the through grooves 10 in the valley portion 21). However, the length and spacing of the through grooves 10 can be appropriately determined according to the plate thickness, other dimensions, and the degree of shape retention required. For example, three or more through grooves 10 are continuously provided in the row direction. It may be composed of only one.

起立片３０、３１は、貫通溝１０を臨んで互いに対向して列方向に延びる一対の開口縁部１１、１１の双方にそれぞれ設けられ、貫通溝１０を通過する流体に対して開口縁部１１、１１の双方から効率よく接触することができるように構成されている。ただし、図１２（ｂ）に示すように、一方の開口縁部１１にのみ設けることも勿論できる。切り起こしの場合、当該一方の開口縁部１１に形成する起立片３０、３１の突出長さを長くすることができる。 The standing pieces 30 and 31 are provided on both of the pair of opening edge portions 11 and 11 facing the through groove 10 and extending in the row direction, respectively, and the opening edge portion 11 with respect to the fluid passing through the through groove 10. , 11 are configured to be able to efficiently contact each other. However, as shown in FIG. 12B, it can of course be provided only on one opening edge portion 11. In the case of cutting and raising, the protruding length of the standing pieces 30 and 31 formed on the one opening edge portion 11 can be lengthened.

開口縁部の双方に設けられる起立片３０（３１）は、各開口縁部のほぼ全長にわたって延びる長片とされているが、図１３に示すように、間隔をあけて複数の起立片３０を設けることも勿論できる。この場合、図１３のように、両開口縁部１１に交互に（千鳥状に）突出長さの長い起立片３０（３１）を切り起こしにより形成することができる。 The standing pieces 30 (31) provided on both sides of the opening edge are long pieces extending over almost the entire length of each opening edge, but as shown in FIG. 13, a plurality of standing pieces 30 are spaced apart from each other. Of course, it can be provided. In this case, as shown in FIG. 13, standing pieces 30 (31) having long protruding lengths can be alternately (staggered) formed on both opening edges 11 by cutting and raising.

起立片３０、３１は、切り起こし片である。別途形成した片をろう付け等することもできるが、切り起こし片とすることで機械加工により効率良く低コストに形成できる。具体的には、山部２０又は谷部２１の中央に沿って両側に切り裂くように起立片３０、３１を切り起こし形成し、これにより貫通溝１０を形成するものである。中央から両側に切り起こす結果、形成される貫通溝１０の両側の開口縁部１１、１１の双方に設けられる起立片３０（３１）の高さ寸法は、同じ寸法となり、具体的には当該貫通溝の列方向に直交する幅方向の寸法の略半分の寸法となる。 The standing pieces 30 and 31 are cut-up pieces. Separately formed pieces can be brazed or the like, but by using cut pieces, they can be formed efficiently and at low cost by machining. Specifically, the standing pieces 30 and 31 are cut and formed so as to be torn on both sides along the center of the mountain portion 20 or the valley portion 21, thereby forming the through groove 10. As a result of cutting up from the center to both sides, the height dimensions of the upright pieces 30 (31) provided on both the opening edges 11 and 11 on both sides of the through groove 10 are the same, and specifically, the penetration. It is approximately half the dimension in the width direction orthogonal to the row direction of the groove.

このように起立片３０（３１）を切り起こし加工により形成することで母材を無駄なく用いて形成することができ、接触面積を最大限に高めることが可能となる。起立片３０（３１）は、山部と谷部とを連結している中間壁部２２に対して略面一に突出している。すなわち、起立片３０（３１）及び貫通溝１０は、山部２０（谷部２１）の頂面（底面）の幅すべてを使って切り起こして形成され、貫通溝１０と中間壁部２２との段差が存在しないように構成されている。したがって、流体が通過する際の通過抵抗は最小限に抑えられ、流体の圧損を抑え、通過効率が向上し、優れた清浄化効果や油脂分の除去効果が得られる。 By forming the upright piece 30 (31) by cutting and raising in this way, the base metal can be formed without waste, and the contact area can be maximized. The standing piece 30 (31) projects substantially flush with respect to the intermediate wall portion 22 connecting the mountain portion and the valley portion. That is, the upright piece 30 (31) and the through groove 10 are formed by cutting up using the entire width of the top surface (bottom surface) of the mountain portion 20 (valley portion 21), and the through groove 10 and the intermediate wall portion 22 are formed. It is configured so that there are no steps. Therefore, the passage resistance when the fluid passes is minimized, the pressure loss of the fluid is suppressed, the passage efficiency is improved, and an excellent cleaning effect and an effect of removing oils and fats can be obtained.

以下、図６～図９に基づき、本発明に係る金属フィルタ１を、表面に光触媒層を形成した光触媒フィルタとして構成し、該光触媒フィルタを用いた空気清浄機を構成した実施形態について説明する。 Hereinafter, an embodiment in which the metal filter 1 according to the present invention is configured as a photocatalyst filter having a photocatalyst layer formed on the surface thereof and an air purifier using the photocatalyst filter is configured will be described with reference to FIGS. 6 to 9.

空気清浄機は、図８及び図９に示すように、筐体４０の前後壁を連結する上下左右の周壁の所定の位置に、筐体４０の内部に空気を取り入れる流入口４１、及び筐体４０外部に空気を排出する排出口４２がそれぞれ設けられ、筐体４０内部には、単又は複数の光触媒フィルタ５と、これに対向して該光触媒フィルタ５に紫外線を照射する単又は複数の紫外線照射部６とが、前後に並設されている。紫外線照射部６は、光触媒フィルタ５の全面に対面する紫外線ＬＥＤ基板が設けられている。 As shown in FIGS. 8 and 9, the air purifier has an inflow port 41 for taking in air into the housing 40 and a housing at predetermined positions on the upper, lower, left and right peripheral walls connecting the front and rear walls of the housing 40. A discharge port 42 for discharging air to the outside of the 40 is provided, and inside the housing 40, a single or a plurality of photocatalyst filters 5 and a single or a plurality of ultraviolet rays that irradiate the photocatalyst filter 5 with ultraviolet rays facing the photocatalyst filter 5 are provided. The irradiation unit 6 is arranged side by side in the front and rear. The ultraviolet irradiation unit 6 is provided with an ultraviolet LED substrate facing the entire surface of the photocatalyst filter 5.

筐体４０の内部には、図９にも示すように、流入口４１から光触媒フィルタ５の空気の入口に至る空気供給路４３、及び該光触媒フィルタ５の空気の出口から排出口に至る空気排出路４８が設けられ、空気供給路４３又は空気排出路４８の途中に、空気を強制的に流通させるファン８が設けられている。筐体４０を構成する前側カバー部４５Ａ、中間の基体部４５Ｂ、後側カバー部４５Ｃのうち、前側カバー部４５Ａの内面側及び基体部４５Ｂの前面側には、左右の流入口４１から枠部４６に取り付けられる光触媒フィルタ５及び集塵フィルタ７の前面に空気を供給する空気供給路４３を構成する隔壁等が適宜突設されている。 Inside the housing 40, as shown in FIG. 9, an air supply path 43 from the inflow port 41 to the air inlet of the photocatalyst filter 5 and an air discharge from the air outlet of the photocatalyst filter 5 to the discharge port. A passage 48 is provided, and a fan 8 for forcibly flowing air is provided in the middle of the air supply passage 43 or the air discharge passage 48. Of the front cover portion 45A, the intermediate base portion 45B, and the rear cover portion 45C constituting the housing 40, the inner surface side of the front cover portion 45A and the front side of the base portion 45B have frame portions from the left and right inflow ports 41. A partition wall or the like constituting an air supply path 43 for supplying air is appropriately provided on the front surface of the photocatalyst filter 5 and the dust collection filter 7 attached to the 46.

また、基体部４５Ｂの後面側、及び後側カバー部４５Ｃの前面側にも、集塵フィルタ７及び光触媒フィルタ５を通過して紫外線照射部６との隙間から側方、すなわち内側へ抜けた空気をファン８まで導くとともに、さらにファン８から上側の排出口４２まで導く空気排出路を構成するための隔壁等が適宜突設されている。 Further, on the rear surface side of the substrate portion 45B and the front surface side of the rear side cover portion 45C, the air that has passed through the dust collection filter 7 and the photocatalyst filter 5 and escaped sideways, that is, inward from the gap with the ultraviolet irradiation portion 6. A partition wall or the like for forming an air discharge path for guiding the fan 8 to the fan 8 and further leading the fan 8 to the upper discharge port 42 is appropriately provided.

空気の流入口、排出口の位置は、例えば、左右壁とともに下壁にも流入口を設けたものや、上壁の代わりに下壁に排出口を設けたもの、下壁に流入口を設け、左右壁又は上壁に排出口を設けたもの、流入口、排出口をそれぞれ左右壁に設けたものなど、上下左右の周壁に流入口及び排出口を設けるものであれば、その他種々の構成が可能である。 The positions of the air inlet and outlet are, for example, those with an inlet on the lower wall as well as the left and right walls, those with an outlet on the lower wall instead of the upper wall, and those with an inlet on the lower wall. , Those with outlets on the left and right walls or upper wall, those with inlets and outlets on the left and right walls, etc., as long as they have inlets and outlets on the upper, lower, left and right peripheral walls, and various other configurations. Is possible.

流入口４１には、取り込む空気を光触媒フィルタ５が取り付けられる枠部４６の前側に導くために、流入口４１の開口縁の後側の縁部から筐体内側斜め前方に向けて延び、枠部４６に前端に連続する導入壁４７が設けられている。流入口４１から取り込まれた空気は、この導入壁４７と前側カバー部４５Ａの間の空間よりなる空気供給路４３を通じて枠部４６前側から集塵フィルタ７及び光触媒フィルタ５を通過し、空気排出路を通じてファンの側へ導かれることになる。 In order to guide the air taken into the inflow port 41 to the front side of the frame portion 46 to which the photocatalyst filter 5 is attached, the inflow port 41 extends diagonally forward from the rear edge of the opening edge of the inflow port 41 toward the inside of the housing and the frame portion. A continuous introduction wall 47 is provided at the front end of the 46. The air taken in from the inflow port 41 passes through the dust collection filter 7 and the photocatalyst filter 5 from the front side of the frame portion 46 through the air supply path 43 consisting of the space between the introduction wall 47 and the front cover portion 45A, and is an air discharge path. It will be guided to the fan side through.

このような導入壁４７は、上記のとおり光触媒フィルタ５が取り付けられる枠部４６の前側に空気を導く空気供給路４３を構成するととともに、筐体４０内において枠部４６よりも後ろ側に配置される紫外線照射部６の発する紫外線が流入口４１を通じて外部に漏れないようにするための遮断壁としての作用も奏している。 As described above, such an introduction wall 47 constitutes an air supply path 43 that guides air to the front side of the frame portion 46 to which the photocatalyst filter 5 is attached, and is arranged behind the frame portion 46 in the housing 40. It also acts as a blocking wall to prevent the ultraviolet rays emitted by the ultraviolet irradiation unit 6 from leaking to the outside through the inflow port 41.

光触媒フィルタ５は、図６及び図７に示すように、合成樹脂製の筒状の枠体５１内に、上述した金属フィルタ１を嵌め込んで構成されている。枠体５１は、金属フィルタ１の厚み方向一方の面（図６では下側の面）の周端部を掛止する掛止片５２ａが内周面に突設された枠本体５２と、枠本体５２の内周側において前記掛止片５２ａに掛止された状態に内装される金属フィルタ１の他方の面（図６では上側の面）の周端部を掛止する環状の枠部材５３とより構成されている。 As shown in FIGS. 6 and 7, the photocatalyst filter 5 is configured by fitting the above-mentioned metal filter 1 into a tubular frame 51 made of synthetic resin. The frame body 51 includes a frame main body 52 in which a hooking piece 52a for hooking a peripheral end portion of one surface (lower surface in FIG. 6) in the thickness direction of the metal filter 1 is projected from the inner peripheral surface, and a frame. An annular frame member 53 that hooks the peripheral end of the other surface (upper surface in FIG. 6) of the metal filter 1 that is mounted on the inner peripheral side of the main body 52 in a state of being hooked on the hooking piece 52a. It is composed of and more.

枠部材５３には、金属フィルタ１と反対側に延びる把持片５４が設けられており、図８に示すように当該光触媒フィルタ５を取り付ける枠部４６の内面にはこの把持片５４を係止する係止溝４６ｂが対応する位置に形成されている。光触媒フィルタ５は、この把持片５４を手でつまんで枠部４６から容易に取り外したり取り付けることができ、メンテナンス性が向上するとともに該把持片５４により集塵フィルタ７を安定保持することができる。 The frame member 53 is provided with a grip piece 54 extending on the opposite side to the metal filter 1, and as shown in FIG. 8, the grip piece 54 is locked to the inner surface of the frame portion 46 to which the photocatalyst filter 5 is attached. The locking groove 46b is formed at the corresponding position. The photocatalyst filter 5 can be easily removed and attached from the frame portion 46 by pinching the grip piece 54 by hand, which improves maintainability and allows the grip piece 54 to stably hold the dust collection filter 7.

枠体５１の外周部には軟質材料よりなる環状のシール材５５が設けられている。具体的には、枠本体５２と枠部材５３の組み付けにより外周面に環状の凹条が形成され、該凹条に前記シール材５５が装着されている。このシール材５５は、好ましくはシリコーンゴムより構成される。このようなシール材５５を設けることで、当該光触媒フィルタ５が筐体４０の枠部４６に密着して安定保持され、この密着のみで光触媒フィルタ５を着脱できるので作業性がよく、また密封性を高めて空気が光触媒フィルタ５の隙間を確実に流通するようにでき、さらに光触媒フィルタ５が枠部４６内で振動して騒音が生じることを未然に防止する効果を奏する。 An annular sealing material 55 made of a soft material is provided on the outer peripheral portion of the frame 51. Specifically, an annular recess is formed on the outer peripheral surface by assembling the frame main body 52 and the frame member 53, and the sealing material 55 is attached to the recess. The sealing material 55 is preferably made of silicone rubber. By providing such a sealing material 55, the photocatalyst filter 5 is in close contact with the frame portion 46 of the housing 40 and is stably held, and the photocatalyst filter 5 can be attached and detached only by this close contact, so that workability is good and sealing performance is good. It is possible to ensure that air flows through the gaps of the photocatalyst filter 5 by increasing the amount of air, and further, it has an effect of preventing the photocatalyst filter 5 from vibrating in the frame portion 46 and causing noise.

光触媒としては、二酸化チタンの皮膜が金属フィルタ１の金属板本体２の表面全体に被覆形成されている。二酸化チタンの皮膜の形成は、公知の方法を採用できる。例えば、サンドブラストやエッチング、プレス加工時のジボ加工、化研処理、又はこれらの組み合わせにより表面を荒らしたうえで被覆形成することが好ましい。この光触媒に紫外線照射部３からの紫外線が照射されることでＯＨラジカルが発生し、空気中の有害成分や臭い成分が分解される。 As a photocatalyst, a titanium dioxide film is formed on the entire surface of the metal plate body 2 of the metal filter 1. A known method can be adopted for forming the titanium dioxide film. For example, it is preferable to form a coating after roughening the surface by sandblasting, etching, jib processing during press processing, chemical research treatment, or a combination thereof. When this photocatalyst is irradiated with ultraviolet rays from the ultraviolet irradiation unit 3, OH radicals are generated, and harmful components and odorous components in the air are decomposed.

紫外線照射部６は、図９にも示すように、光触媒フィルタ５の空気の出口側の面（図９では下面）に対向する位置であって該面から所定距離離れた位置に設けられ、該位置から光触媒フィルタ５の前記面に向けて紫外線を照射するように配置されている。これにより紫外線照射部６と光触媒フィルタ５との間に、光触媒フィルタ５から出た空気を前記出口側の面に略平行な側方に排出する空気排出路４８が形成される。 As shown in FIG. 9, the ultraviolet irradiation unit 6 is provided at a position facing the air outlet side surface (lower surface in FIG. 9) of the photocatalyst filter 5 and at a position separated from the surface by a predetermined distance. It is arranged so as to irradiate ultraviolet rays from the position toward the surface of the photocatalyst filter 5. As a result, an air discharge path 48 is formed between the ultraviolet irradiation unit 6 and the photocatalyst filter 5 to discharge the air emitted from the photocatalyst filter 5 laterally substantially parallel to the outlet side surface.

より具体的には、紫外線照射部６は、図９に示すように、基板６０と、該基板６０の光触媒フィルタ５に対面する側の面に付設された紫外線光源（本例では紫外線ＬＥＤ素子）６１と、基板６０と光触媒フィルタ５の間に介装され、基板６０及び紫外線光源６１を覆う光透過性のカバー板６２とより構成されている。基板６０及びカバー板６２は、光触媒フィルタ５の空気の出口すべてに亘って、空気排出路４８となる隙間を介して対面するように筐体４０内の固定部に取り付けられている。 More specifically, as shown in FIG. 9, the ultraviolet irradiation unit 6 is an ultraviolet light source (in this example, an ultraviolet LED element) attached to the substrate 60 and the surface of the substrate 60 facing the photocatalyst filter 5. It is composed of 61 and a light-transmitting cover plate 62 interposed between the substrate 60 and the photocatalyst filter 5 and covering the substrate 60 and the ultraviolet light source 61. The substrate 60 and the cover plate 62 are attached to a fixed portion in the housing 40 so as to face each other through a gap serving as an air discharge path 48 over all the air outlets of the photocatalyst filter 5.

光触媒フィルタ５を抜けて後面側（図９では下面側）に出た空気は、基本的に紫外線照射部６のカバー板６２との間の隙間（空気排出路４８）を通じ、カバー板６２の表面に沿って側端の側（筐体中央側）へ排出されることになる。一部の空気はカバー板６２の裏面と基板６０の間を流通する。カバー板６２は、基板６０や紫外線光源６１に埃等が溜まることを防止する。カバー板６２の上に溜まる埃等は、光触媒フィルタ５のメンテナンスや交換の際にカバー板６２上を清掃するだけで容易に除去できる。 The air that has passed through the photocatalyst filter 5 and exited to the rear surface side (lower surface side in FIG. 9) basically passes through the gap (air discharge path 48) between the cover plate 62 of the ultraviolet irradiation unit 6 and the surface of the cover plate 62. It will be discharged to the side of the side end (center side of the housing) along the above. Some air circulates between the back surface of the cover plate 62 and the substrate 60. The cover plate 62 prevents dust and the like from accumulating on the substrate 60 and the ultraviolet light source 61. Dust and the like accumulated on the cover plate 62 can be easily removed only by cleaning the cover plate 62 at the time of maintenance or replacement of the photocatalyst filter 5.

このように本例では光触媒フィルタ５の空気の出口側の面に紫外線照射部６が対面配置されているが、入口側の面に対向する位置であって該面から所定距離離れた位置に、該位置から前記入口側の面に紫外線を照射するように配置し、これにより紫外線照射部６と光触媒フィルタ５との間に、前記入口側の面に略平行な側方から空気を取り込み、光触媒フィルタ５に空気を供給するようにすることも好ましい。また、光触媒フィルタ５の空気の出口側と入口側の双方にそれぞれ紫外線照射部を同様に設け、同様の空気排出路及び空気供給路を形成するものでもよい。 As described above, in this example, the ultraviolet irradiation unit 6 is arranged face-to-face on the surface of the photocatalyst filter 5 on the air outlet side, but at a position facing the surface on the inlet side and at a position separated from the surface by a predetermined distance. From this position, the surface on the inlet side is arranged so as to irradiate ultraviolet rays, whereby air is taken in between the ultraviolet irradiation unit 6 and the photocatalyst filter 5 from the side substantially parallel to the surface on the inlet side, and the photocatalyst is taken in. It is also preferable to supply air to the filter 5. Further, the photocatalyst filter 5 may be similarly provided with ultraviolet irradiation portions on both the outlet side and the inlet side of the air to form the same air discharge path and air supply path.

本実施形態の空気清浄機４は、このように表面に光触媒が担持された上述の金属フィルタ１を用いて光触媒フィルタ５を構成するとともに、該光触媒フィルタ５の空気の入口側又は出口側の面から所定距離離れた位置に紫外線照射部６を配置し、該紫外線照射部６との間に前記入口側の面に略平行な側方より空気を取り込む、又は前記出口側の面に略平行な側方に空気を排出する空気排出路を形成する空気清浄化構造を備えている。このような空気清浄化構造Ｓは、紫外線ランプの隙間を通じて空気を供給又は排出するものではないため紫外線照射部６の設計の自由度が著しく向上し、紫外線照射部６から光触媒フィルタ５の奥まで紫外線を効率よく照射することが設計上容易になる。 In the air purifier 4 of the present embodiment, the photocatalyst filter 5 is configured by using the above-mentioned metal filter 1 in which the photocatalyst is supported on the surface, and the air inlet side or outlet side surface of the photocatalyst filter 5 is used. The ultraviolet irradiation unit 6 is arranged at a position separated from the ultraviolet irradiation unit 6, and air is taken in from the side substantially parallel to the surface on the inlet side or substantially parallel to the surface on the outlet side. It is equipped with an air purification structure that forms an air discharge path that discharges air to the side. Since such an air purifying structure S does not supply or discharge air through the gaps between the ultraviolet lamps, the degree of freedom in designing the ultraviolet irradiation unit 6 is significantly improved, and the ultraviolet irradiation unit 6 to the depth of the photocatalyst filter 5 Efficient irradiation of ultraviolet rays is easy in design.

また、光触媒フィルタ５と紫外線照射部６との間の隙間の側方から光触媒フィルタに対し空気を供給又は排出するので、紫外線照射部の反対側に空気の供給路又は排出路を設ける必要がなく、空気清浄機全体の厚みを抑えることができ、薄型コンパクト化が可能となる。図８及び図９に示すように、光触媒フィルタ５の山部２０又は谷部２１の延びる方向から空気を供給／排出するように構成されているため、すべての山部２０又は谷部２１に対して均等に効率よく空気を供給／排出できる。 Further, since air is supplied or discharged to the photocatalyst filter from the side of the gap between the photocatalyst filter 5 and the ultraviolet irradiation unit 6, it is not necessary to provide an air supply path or an exhaust path on the opposite side of the ultraviolet irradiation unit. , The thickness of the entire air purifier can be suppressed, making it possible to make it thinner and more compact. As shown in FIGS. 8 and 9, since the air is supplied / discharged from the extending direction of the mountain portion 20 or the valley portion 21 of the photocatalyst filter 5, the air is supplied / discharged to all the mountain portions 20 or the valley portion 21. Air can be supplied / discharged evenly and efficiently.

以上、本発明の実施形態について説明したが、本発明はこうした実施例に何ら限定されるものではなく、本発明の要旨を逸脱しない範囲において種々なる形態で実施し得ることは勿論である。 Although the embodiments of the present invention have been described above, the present invention is not limited to these examples, and it is needless to say that the present invention can be implemented in various forms without departing from the gist of the present invention.

１ 金属フィルタ
２ 金属板本体
３ 紫外線照射部
４ 空気清浄機
５ 光触媒フィルタ
６ 紫外線照射部
７ 集塵フィルタ
８ ファン
１０ 貫通溝
１１ 開口縁部
２０ 山部
２１ 谷部
２２ 中間壁部
２３ 橋渡し部
３０ 起立片
３１ 起立片
４０ 筐体
４１ 流入口
４２ 排出口
４３ 空気供給路
４５Ａ 前側カバー部
４５Ｂ 基体部
４５Ｃ 後側カバー部
４６ 枠部
４６ｂ 係止溝
４７ 導入壁
４８ 空気排出路
５１ 枠体
５２ 枠本体
５２ａ 掛止片
５３ 枠部材
５４ 把持片
５５ シール材
６０ 基板
６１ 紫外線光源
６２ カバー板 1 Metal filter 2 Metal plate body 3 Ultraviolet irradiation part 4 Air purifier 5 Photocatalyst filter 6 Ultraviolet irradiation part 7 Dust collection filter 8 Fan 10 Through groove 11 Opening edge 20 Mountain part 21 Tani part 22 Intermediate wall part 23 Bridging part 30 Standing Piece 31 Standing piece 40 Housing 41 Inflow port 42 Outlet 43 Air supply path 45A Front cover 45B Base 45C Rear cover 46 Frame 46b Locking groove 47 Introductory wall 48 Air exhaust path 51 Frame 52 Frame body 52a Hook piece 53 Frame member 54 Grip piece 55 Sealing material 60 Substrate 61 Ultraviolet light source 62 Cover plate

Claims (7)

列状の山部と谷部が交互に複数形成された金属板本体の前記山部と谷部の一方又は双方に、流体を通過させるための列方向に延びる貫通溝を有し、
該貫通溝の開口縁部に、当該山部又は谷部の凸面側に起立する起立片を有し、
前記起立片が、前記山部と前記谷部とを連結している中間壁部に対して略面一に突出しており、
且つ、触媒層又は吸着層が表面に形成されている金属フィルタ。 One or both of the peaks and valleys of the metal plate body in which a plurality of rows of peaks and valleys are alternately formed has through grooves extending in the row direction for allowing fluid to pass therethrough.
The opening edge of the through groove has an upright piece that stands up on the convex side of the mountain or valley.
The upright piece projects substantially flush with respect to the intermediate wall portion connecting the mountain portion and the valley portion .
Moreover, a metal filter having a catalyst layer or an adsorption layer formed on the surface . 前記起立片が、前記貫通溝を臨み互いに対向して列方向に延びる一対の開口縁部の双方にそれぞれ設けられている請求項１記載の金属フィルタ。 The metal filter according to claim 1, wherein the upright pieces are provided on both of a pair of opening edges extending in a row direction facing the through groove and facing each other. 前記開口縁部の双方に設けられる起立片が、各開口縁部のほぼ全長にわたって延びる長片である請求項２記載の金属フィルタ。 The metal filter according to claim 2, wherein the standing pieces provided on both sides of the opening edge are long pieces extending over substantially the entire length of each opening edge. 前記開口縁部の双方に設けられる起立片の高さ寸法が、当該貫通溝の列方向に直交する幅方向の寸法の略半分の寸法である請求項２又は３記載の金属フィルタ。 The metal filter according to claim 2 or 3, wherein the height dimension of the standing piece provided on both sides of the opening edge portion is substantially half the dimension in the width direction orthogonal to the row direction of the through groove. 前記起立片が、切り起こし片である請求項４記載の金属フィルタ。 The metal filter according to claim 4, wherein the upright piece is a cut-up piece. 前記山部又は谷部に、前記貫通溝が列方向に間隔をおいて複数設けられている請求項１～５の何れか１項に記載の金属フィルタ。 The metal filter according to any one of claims 1 to 5, wherein a plurality of through grooves are provided in the mountain portion or the valley portion at intervals in the row direction. 請求項１～６の何れか１項に記載の金属フィルタの製造方法であって、
前記山部と谷部よりなる凹凸形状をプレス加工により形成する際に、同時に、打ち抜きによる切り起こし加工により前記起立片を形成し、これにより前記貫通溝も形成される金属フィルタの製造方法。 The method for manufacturing a metal filter according to any one of claims 1 to 6.
A method for manufacturing a metal filter in which an upright piece is formed by punching and raising at the same time when an uneven shape composed of peaks and valleys is formed by press working, thereby forming a through groove.
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