JP3831855B2

JP3831855B2 - Ear filter, filter frame, and mounting structure of the ear filter to the filter frame

Info

Publication number: JP3831855B2
Application number: JP25966793A
Authority: JP
Inventors: 耕二小畑
Original assignee: Japan Vilene Co Ltd
Current assignee: Japan Vilene Co Ltd
Priority date: 1993-10-18
Filing date: 1993-10-18
Publication date: 2006-10-11
Anticipated expiration: 2021-10-11
Also published as: JPH07112107A

Description

【０００１】
【産業上の利用分野】
本発明は耳付フィルタ、フィルタ枠及び耳付フィルタのフィルタ枠への取付構造に関する。詳細には、フィルタのみ単独で取り扱うことができ、フィルタ枠への取り付け、取り外しが容易であり、しかも確実にエアーリークを防止できる耳付フィルタ、フィルタ枠及び耳付フィルタのフィルタ枠への取付構造に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来、図６に示すように、フィルタ１は運搬中や交換時の振動から当該フィルタ１を保護することを目的としてフィルタ枠２と接合一体化した形態（ユニット型フィルタ）で取り扱われていた。
【０００３】
ところが、フィルタ枠には厚さが９ｍｍの合坂や厚さが１ｍｍの鋼板が用いられており、その重量は６〜１５ｋｇと重く、これをフィルタに接合一体化した状態で取り扱う場合には、交換作業や運搬作業に大変な労力と時間とを要していた。
【０００４】
また、フィルタ枠と接合一体化したフィルタを廃棄する場合、鋼板を枠として用いたものは燃えないため、また合板を使用したものにあっても、フィルタを固定するための釘やタッカー等の固定具を使用しているため、フィルタとは分離して別々に処分しなければならないという煩雑さがあった。
【０００５】
また、このようなフィルタ枠と接合一体化した形態で取り扱う場合、フィルタ枠の耐用年数は１０〜１５年であるにも拘らず、フィルタの使用限度が６〜２４カ月であることから、その交換はフィルタの使用限度に合わせて行われており、十分に使用可能なフィルタ枠までもフィルタとともに廃棄してしまうという大変に無駄な対応を取らざるを得なかった。
【０００６】
さらに、フィルタ枠は合板や鋼板によってできており減容することができないので箱型のままの運搬となり、その分おおきなスペースを確保しなければならなかった。
【０００７】
そこで、従来のフィルタ枠を接合一体化したフィルタにおける取り扱い性の悪さ、廃棄処分の煩雑さ、減容できないなどの欠点を解消できるフィルタとして、フィルタの天地部や両端部をプラスチックや不織布で補強してフィルタのみで取り扱うことができるようにして前記課題に対処したものも提案されている。
【０００８】
しかしながら、このフィルタにあっては、図７に示すように、フィルタ１自体十分な強度を有しておらず、使用時における風圧で変形し、フィルタ枠２との間に隙間が生じてエアーリークが発生し易いという欠点があった。
【０００９】
本発明は、このような事情に鑑みなされたものであり、フィルタのみ単独で取り扱うことができ、フィルタ枠への取り付け、取り外しが容易であり、しかも確実にエアーリークを防止できる耳付フィルタ、フィルタ枠及び耳付フィルタのフィルタ枠への取付構造を提供することを目的とするものである。
【００１０】
【課題を解決するための手段】
上記目的を達成するため、請求項１記載の発明は、フィルタ枠内部に収納されるフィルタであって、折り加工されたフィルタ両端部に先端が濾材の濾過方向に下流向きとなるように設けた断面Ｌ型の耳部が、前記フィルタ枠上流側の左右内側面に濾材の濾過方向に上流向きとなるように設けた凹部に受け入れられることで、または前記耳部がフィルタ枠上流側左右の壁に引っ掛けられ、フィルタ枠上流側の左右側面側にプレフィルタ枠で挟み込まれることにより、当該フィルタが前記フィルタ枠に取り外し可能に取り付けられるようにしたことを特徴とする耳付フィルタをその要旨とした。
【００１１】
請求項２記載の発明は、フィルタ枠内部に収納されるフィルタであって、折り加工されたフィルタ両端部に設けた断面Ｌ型の耳部を備えると共に、該耳部に先端が濾材の濾過方向に下流向きとなるように設けたフック部を設け、該フック部を前記フィルタ枠上流側の左右内側面に濾材の濾過方向に上流向きとなるように設けた凹部に掛着させることにより、当該フィルタが前記フィルタ枠に取り外し可能に取り付けられるようにしたことを特徴とする耳付きフィルタをその要旨とした。
【００１２】
請求項３記載の発明は、折り加工されたフィルタ両端部に断面Ｌ型の耳部を設けた耳付フィルタを枠内部に収納するフィルタ枠であって、当該フィルタ枠上流側の左右内側面に濾材の濾過方向に上流向きとなるように設けた凹部に前記耳付フィルタの先端が濾材の濾過方向に下流向きとなるように設けた耳部を受け入れることで、前記フィルタが取り外し可能に取り付けられるようにしたことを特徴とするフィルタ枠をその要旨とした。
【００１３】
請求項４記載の発明は、フィルタ枠下流側の内側上下面に耳付フィルタの折り形状に対応して土手部が設けられていることを特徴とするフィルタ枠をその要旨とした。
【００１４】
請求項５記載の発明は、折り加工されたフィルタ両端部に先端が濾材の濾過方向に下流向きとなるように設けた断面Ｌ型の耳部を、フィルタ枠上流側の左右内側面に濾材の濾過方向に上流向きとなるように設けた凹部が受け入れることにより、前記耳付フィルタがフィルタ枠に取り外し可能に取り付けられるようにしたことを特徴とする耳付フィルタのフィルタ枠への取付構造をその要旨とした。
【００１５】
請求項６記載の発明は、フィルタ両端部に設けた断面Ｌ型の耳部を設けた耳付きフィルタが、フィルタ枠下流側の内側上下面に前記耳付フィルタの折り形状に対応して設けた土手部に当接すると共に、フィルタ枠上流側の左右内側面に設けた凹部が前記耳付フィルタの耳部を受け入れることにより取り付けられていることを特徴とする耳付フィルタのフィルタ枠への取付構造をその要旨とした。
【００１６】
請求項７記載の発明は、折り加工されたフィルタ両端部に先端が濾材の濾過方向に下流向きとなるように設けた断面Ｌ型の耳部をフィルタ枠の上流側左右の壁に引っ掛け、該耳部をフィルタ枠上流側の左右側面側にプレフィルタ枠で挟み込むことにより、前記耳付フィルタが前記フィルタ枠に取り外し可能に取り付けられるようにしたことを特徴とする耳付フィルタのフィルタ枠への取付構造をその要旨とした。
【００１７】
請求項８記載の発明は、フィルタ両端部に設けた断面Ｌ型の耳部を設けた耳付きフィルタが、フィルタ枠下流側の内側上下面に前記耳付フィルタの折り形状に対応して設けた土手部に当接すると共に、フィルタ枠上流側の左右側面側に前記耳付フィルタの耳部をプレフィルタ枠で挟み込むことにより取り付けられていることを特徴とする耳付フィルタのフィルタ枠への取付構造をその要旨とした。
【００１８】
【作用】
請求項１記載の耳付フィルタ１１は、フィルタ１１両端部に設けた断面Ｌ型の耳部１３をフィルタ枠１４上流側の左右内側面に設けた凹部１５に受け入れさせることにより、フィルタ枠１４への取り外し可能な取り付けがなされるようになっている。
【００１９】
また、この耳付フィルタ１１は、先端が濾材Ｎの濾過方向に下流向きとなるように設けた断面Ｌ型の耳部１３をフィルタ枠１４の上流側左右の壁に引っ掛け、該耳部１３をフィルタ枠１４上流側の左右側面側にプレフィルタ枠１７で挟み込むことによってもフィルタ枠１４への取り外し可能な取り付けがなされるようになっている。
【００２０】
また、この耳付フィルタ１１は、フィルタ１１両端部に設けた耳部１３の先端が濾材Ｎの濾過方向に下流向きとなるように設けられており、この耳部１３がフィルタ枠１４の濾材Ｎの濾過方向に上流向きとなるように設けた凹部１５内に受け入れられてフィルタ１１端部の取り外し可能な取り付けがなされたとき、該フィルタ１１に運転時の風圧が加わることでフィルタ１１は下流側に押され、フィルタ１１端部の耳部１３はその力で凹部１５の内壁に密接し、フィルタ１１両端部とフィルタ枠１４との間に隙間が生じ難くなり、エアーリークの発生が防止されるようになっている。
【００２１】
請求項２記載の耳付フィルタ１１は、フィルタ１１両端部の耳部１３に先端が濾材Ｎの濾過方向に下流向きとなるように設けたフック部１３ａをフィルタ枠１４上流側の左右内側面に濾材Ｎの濾過方向に上流向きとなるように設けた凹部１５に掛着させることにより、フィルタ枠１４への取り付けがなされるようになっている。
【００２２】
請求項３記載のフィルタ枠１４は、フィルタ枠１４上流側の左右内側面に設けた凹部１５が前記耳付フィルタ１１の耳部１３を受け入れることで、運転時に加わる下流側への風圧に対しフィルタ１１両端部を安定に支えて、フィルタ１１の取り外し可能な取り付けがなされるようになっている。
【００２３】
また、このフィルタ枠１４は、フィルタ１１両端部に設けた耳部１３の先端が濾材Ｎの濾過方向に下流向きとなるように設けられており、この耳部１３がフィルタ枠１４の濾材Ｎの濾過方向に上流向きとなるように設けた凹部１５内に受け入れられてフィルタ１１端部の取り外し可能な取り付けがなされたとき、該フィルタ１１に運転時の風圧が加わることでフィルタ１１は下流側に押され、フィルタ１１端部の耳部１３はその力で凹部１５の内壁に密接し、フィルタ１１両端部とフィルタ枠１４との間に隙間が生じ難くなり、エアーリークの発生が防止されるようになっている。
【００２４】
請求項４記載のフィルタ枠１４は、フィルタ１１をフィルタ枠１４に取り付けたとき、フィルタ枠１４下流側の内側上下面に耳付フィルタ１１の折り形状に対応して設けられた土手部１６がフィルタ１１の下流側に当接するようになっており、当該フィルタ１１はこの土手部１６により折り形状が保持され、かつ下流側で支持されるようになっている。
【００２５】
請求項５記載の耳付フィルタのフィルタ枠への取付構造にあっては、耳付フィルタ１１の耳部１３をフィルタ枠１４上流側の左右内側面に設けた凹部１５が受け入れることによりフィルタ１１が取り外し可能な取り付けがなされるようになっている。
【００２６】
また、この取付構造にあっては、フィルタ１１両端部に設けた耳部１３の先端が濾材Ｎの濾過方向に下流向きとなるように設けられており、この耳部１３がフィルタ枠１４の濾材Ｎの濾過方向に上流向きとなるように設けた凹部１５内に受け入れられてフィルタ１１端部の取り外し可能な取り付けがなされたとき、該フィルタ１１に運転時の風圧が加わることでフィルタ１１は下流側に押され、フィルタ１１端部の耳部１３はその力で凹部１５の内壁に密接し、フィルタ１１両端部とフィルタ枠１４との間に隙間が生じ難くなり、エアーリークの発生が防止されるようになっている。
【００２７】
請求項６記載の耳付フィルタのフィルタ枠への取付構造にあっては、耳付フィルタ１１の耳部１３をフィルタ枠１４上流側の左右内側面に設けた凹部１５が受け入れることによりフィルタ１１両端部が上流側で支えられるとともに、フィルタ１１をフィルタ枠１４に取り付けたとき、フィルタ枠１４下流側の内側上下面に耳付フィルタ１１の折り形状に対応して設けられた土手部１６がフィルタ１１の下流側に当接するようになっており、当該フィルタ１１はこの土手部１６により折り形状が保持され、かつ下流側で支持されるようになっている。
【００２８】
請求項７記載の耳付フィルタのフィルタ枠への取付構造にあっては、耳付フィルタ１１両端部に先端が濾材Ｎの濾過方向に下流向きとなるように設けた断面Ｌ型の耳部１３をフィルタ枠１４の上流側左右の壁に引っ掛け、該耳部１３をフィルタ枠１４上流側の左右側面側にプレフィルタ枠１７で挟み込むことにより、耳付フィルタがフィルタ枠に取り外し可能に取り付けられるようになっている。
【００２９】
請求項８記載の耳付フィルタのフィルタ枠への取付構造にあっては、フィルタ枠１４上流側の左右側面側に耳付フィルタ１１の耳部１３をプレフィルタ枠１７で挟み込むことによりフィルタ１１両端部が上流側で支えられるとともに、フィルタ１１をフィルタ枠１４に取り付けたとき、フィルタ枠１４下流側の内側上下面に耳付フィルタ１１の折り形状に対応して設けられた土手部１６がフィルタ１１の下流側に当接するようになっており、当該フィルタ１１はこの土手部１６により折り形状が保持され、かつ下流側で支持されるようになっている。
【００３０】
【実施例】
以下、本発明の耳付フィルタ、フィルタ枠及び耳付フィルタのフィルタ枠への取付構造を図面に従って詳細に説明する。本発明の耳付フィルタは、従来より使用されている不織布や紙やガラス繊維紙など折り加工後の形状が容易に崩れない程度の保形性を持つ濾材を所定の折り形状に折り加工したものである。例えばプリーツ加工のみしたもの、あるいはプリーツ加工（一次折り加工）し、さらにＷ型に折り加工（二次折り加工）して表面積の増大が計られたものなどを挙げることができる。
【００３１】
図１に示したものはプリーツ加工した濾材Ｎの天地部に断面コ型の不織布１２を接着すると共に、前記不織布１２を所定間隔毎に交互に一方の折曲片を残して切断したものであり、図２に示したものは、プリーツ加工した濾材Ｎを所定寸法で切断すると共に、各切断された濾材Ｎの幅方向端部毎交互に不織布又はプラスチック板からなる補強帯１８を接着したものである。図１のフィルタ１１は、切断単位毎に切断されないでおかれた折曲片を蝶番として切断された側が開閉し、図２のフィルタ１１は、切断単位毎に補強帯１８を蝶番として開閉して、フィルタ枠とは別に小さく折り畳んで取り扱うことができるようになっている。尚、フィルタ１１としては、上記図１及び図２に示したものに限らず、従来のプリーツ加工した濾材をＷ型に曲折したものであって、フィルタの天地部に不織布やプラスチック板を貼り付けてダブルジグザグの形状を保持したものなど何でもよい。
【００３２】
耳部１３はフィルタ１１両端部に設けた断面Ｌ型の突出片であり、樹脂を含浸した不織布やプラスチック板など、使用時の風圧や取り扱い時に加わる外力によってその形状が容易に崩れない程度の剛性を有するシート材を素材としている。この耳部１３には、当該フィルタ１１をフィルタ枠１４に取り付けたとき、図３及び図４に示すように、その先端が下流側向きとなるように設けたものと、図５に示すように上流側向きとなるように設けたものとがある。
【００３３】
耳部１３先端が下流側向きとなるように設けたものとしては、例えば図３に示すように、フィルタ枠１４上流側の左右内側面にスリット状の溝よりなる凹部１５を設け、この凹部１５内に耳部１３先端を差し込むことでフィルタ１１端部の取り付けがなされるようにしたもの、フィルタ枠１４上流側の左右内側面に底面を広く設けた凹部１５を設け、この凹部１５の立ち上がり面に耳部１３の先端を引っ掛かけてフィルタ１１端部の取り付けがなされるようにしたもの、耳部１３先端が断面コ型に折曲されており、この折曲された耳部１３先端が同じく断面コ型に設けた凹部１５に嵌合してフィルタ枠１４への取り付けがなされるようにしたものなどを挙げることができる。
【００３４】
また、耳部１３先端が上流側向きとなるように設けたものとしては、例えば図５に示すように、耳部１３に先端が濾材Ｎの濾過方向に下流向きとなるように設けたフック部１３ａを設け、この耳部１３先端のフック部１３ａをフィルタ枠１４上流側の左右内側面に濾材Ｎの濾過方向に上流向きとなるように設けた断面Ｖ字状あるいはＵ字状の凹部１５に掛着させることにより、フィルタ枠１４への取り付けがなされるようにしたものなどを挙げることができる。
【００３５】
このようにして耳部１３がフィルタ枠１４の凹部１５内に受け入れられてフィルタ１１端部の取り外し可能な取り付けがなされたとき、当該フィルタ１１に運転時の風圧が加わることでフィルタ１１は下流側に押され、フィルタ１１端部の耳部１３はその力で凹部１５の内壁に密接し、フィルタ１１両端部とフィルタ枠１４との間に隙間が生じ難くなり、エアーリークの発生が防止されるようになる。
【００３６】
尚、耳部１３のフィルタ１１端部への接合は接着剤を介して行うほか、耳部及び又はフィルタ端部にホットメルト樹脂を塗布しておき、加熱加圧することで両者を一体化するようにしてもよい。尚、フィルタ両端部に耳部１３を設けることで同時にフィルタ両端部の補強もなされることになり、当該フィルタが取り扱い時に破損するといった不具合が生じ難くなる。
【００３７】
また、耳部１３はフィルタ端部の長さ方向全体に設けてもよい。この場合、当該耳部に対応する長さの凹部１５をフィルタ枠１４上流側の左右内側面に濾材Ｎの濾過方向に上流向きとなるように設けて、これに受け入れさせたとき、フィルタ端部とフィルタ枠上流側の左右内側面との間は耳部で完全に塞がれることになり、エアーリークの発生防止はより確実なものとなる。
【００３８】
フィルタ枠１４は、図３に示すように、前記耳付フィルタ１１を枠１４内部に収納するものであり、その外形は箱型、下流側をフィルタの形状に合わせてＷ状としたものなどいずれでもよい。また、その材料も特に限定されず、木製、鉄製、プラスチック製などいずれでもよい。このフィルタ枠１４上流側の左右内側面には前記耳付フィルタ１１の耳部１３を受け入れる凹部１５が濾材Ｎの濾過方向に上流向きとなるように設けられている。
【００３９】
凹部１５は前記耳付フィルタ１１の耳部１３を受け入れて、これが容易に外れないように保持するものである。その好ましい態様としては、フィルタ１１の耳部の態様に合わせて図３に示すように耳部１３先端が挿入されるスリット状の溝よりなるものや、図５に示すように耳部１３先端に設けたフック部１３ａが掛着される断面Ｖ字状あるいはＵ字状のもの、底面を広く設けたものであってその立ち上がり面に耳部１３先端が引っ掛かるようにしたもの、断面コ型に折曲された耳部１３先端に対応して同じく断面コ型に設けられ、耳部１３先端が嵌合するようにしたものなどを挙げることができる。尚、図５に示す凹部は耳部１３先端のフック部１３ａが掛着できればよいので、その形状は図５に示すものの他、スリット状の溝であってもよい。そして、この凹部１５内に前記耳付フィルタ１１の耳部１３を差し込んだり掛着させたり嵌合させたりして受け入れさせることで、フィルタ１１は運転時に加わる下流側への風圧に対し安定に支えられ、取り外し可能な取り付けがなされるようになる。
【００４０】
また、フィルタ枠１４の下流側の内側上下面には、前記耳付フィルタ１１の折り形状に対応して土手部１６が設けられている。土手部１６は図１及び図２に示す耳付フィルタ１１のダブルジグザグ型の折り形状に対応して同じくダブルジグザグ型に設けたものであり、フィルタ１１をフィルタ枠１４に取り付けたとき、同フィルタ１１の下流側がこの土手部１６に当接して、その折り形状が保持され、かつ下流側で支えられるようになる。
【００４１】
尚、図３に示す態様では、フィルタ１１が上流側でフィルタ枠１４の凹部１５に耳部１３を受け入れることでフィルタ１１両端部が支えられ、下流側でフィルタ１１下流側が土手部１６に当接して支えられるようになっているが、フィルタ１１が上流側のみで支えられるようにしてもよい。
【００４２】
また、フィルタ枠１４の土手部の大きさ、高さなどは特に限定されず、耳付フィルタの折り形状に対応して設けられており、フィルタ１１下流側に当接して当該フィルタの折り形状を保持し、かつこれを下流側で支えるという作用効果を奏するものならば何でもよい。
【００４３】
次に、耳付フィルタのフィルタ枠へ取り付けるための別の取付構造について説明する。この取付構造は、図４に示すように、折り加工された耳付フィルタ１１をフィルタ枠１４内に入れるとき、フィルタ１１の先端が濾材Ｎの濾過方向に下流向きとなるように設けた耳部１３をフィルタ枠１４上流側の両側面外側に突出させ、フィルタ枠１４の上流側左右の壁に引っ掛けた状態に設け、この耳部１３をプレフィルタ枠１７で挟み込むことにより当該フィルタ１１の取り付けがなされるようにしたものである。
【００４４】
この取付構造にあっては、前述した取付構造のようにフィルタ枠１４上流側の左右内側面に凹部１５を設けたものを使用する必要がなく、従来より使用されているフィルタ枠を用いることができるという利点がある。また、耳部１３はプレフィルタ枠をフィルタ枠に止め付けるときにこれらの間に挟んで固定して取り付けることができるようになっているので、フィルタの取り付け、取り外しに手間を取らない。また、このフィルタの耳部はプレフィルタ枠に挟まれて固定されているので、フィルタ枠との間に隙間が生じることがなく、エアーリークが発生することもない。
【００４５】
また、図４に示すように、上流側で耳部１３をプレフィルタ枠１７で挟み込むことによりフィルタ１１両端部が支えられるようにすると共に、フィルタ枠１４の下流側の内側上下面に設けた耳付フィルタ１１の折り形状に対応する土手部１６によってフィルタ１１を下流側で支えるようにすることもできる。この場合、フィルタ１１の下流側がこの土手部１６に当接し、当該フィルタの折り形状はこの土手部１６により保持されるようになる。
【００４６】
【発明の効果】
上記構成を備えたことにより、請求項１記載の耳付フィルタにあっては、フィルタ両端部に先端が濾材の濾過方向に下流向きとなるように設けた断面Ｌ型の耳部をフィルタ枠上流側の左右内側面に濾材の濾過方向に下流向きとなるように設けた凹部が受け入れることにより、あるいはフィルタ枠上流側の左右側面側に前記耳付フィルタの耳部をプレフィルタ枠で挟み込むことにより、当該フィルタのフィルタ枠への取り外し可能な取り付けがなされるようになっているので、当該耳付フィルタの取り付け、取り外しに手間を取らず、取り替え作業に要する労力と時間とを大幅に削減することができる。
【００４７】
また、この耳付フィルタにあっては、先端が下流側向きとなるように設けた耳部をフィルタ枠の濾材の濾過方向に下流向きとなるように設けた凹部に受け入れさせてフィルタ枠に取り付けた場合、当該フィルタが運転時に加わる風圧で下流側に押され、フィルタ端部の耳部もその力で凹部の内壁に密接し、フィルタ両端部とフィルタ枠との間に隙間が生じ難くなるので、エアーリークの発生は確実に防止されることになる。
【００４８】
また、耳部をプレフィルタ枠で取り付けた場合にあっても、フィルタはフィルタ枠に挟まれて固定されているので、フィルタ両端部とフィルタ枠との間に隙間ができず、エアーリークが発生することもない。
【００４９】
また、この耳付フィルタにあっては、フィルタ枠の凹部によりあるいはプレフィルタ枠によりフィルタ枠に確実に取り付けることができるので、運搬時等はフィルタのみ単独で取り扱うことができ、フィルタの交換作業、運搬作業などにおける手間を大幅に削減することができる。また、この耳付フィルタにあっては、図１及び図２のような態様を採ることで、切断単位毎に小さく折り畳むことができ、運搬や保管のためのスペースを小さくすることができる。
【００５０】
請求項２記載の耳付フィルタにあっては、断面Ｌ型の耳部の先端を濾材の濾過方向に下流向きとなるように設けたフック部をフィルタ枠上流側の左右内側面に濾材の濾過方向に上流向きとなるように設けた凹部に掛着させることにより、フィルタ枠への取り付けがなされるようになっているので、当該耳付フィルタの取り付け、取り外しは簡単にしかも確実に行うことができる。
【００５１】
請求項３記載のフィルタ枠にあっては、フィルタ枠上流側の左右内側面に濾材の濾過方向に上流向きとなるように設けた凹部内に耳付フィルタの先端を濾材の濾過方向に下流向きとなるように設けた耳部を受け入れることで、運転時に加わる下流側への風圧に対しフィルタ両端部を安定に支えるようになっているので、当該耳付フィルタの取り付け、取り外しに手間を取らず、取り替え作業に要する労力と時間とを大幅に削減することができる。
【００５２】
また、このフィルタ枠にあっては、フィルタ両端部に先端が濾材の濾過方向に下流向きとなるように設けた耳部を濾材の濾過方向に上流向きとなるように設けた凹部が受け入れて取り付けた場合、当該フィルタが運転時に加わる風圧で下流側に押され、フィルタ端部の耳部もその力で凹部の内壁に密接し、フィルタ両端部もフィルタ枠上流側の左右側面に密着するようになるので、フィルタ両端部とフィルタ枠との間に隙間が生じ難く、エアーリークの発生を確実に防止することができる。
【００５３】
請求項４記載のフィルタ枠にあっては、フィルタをフィルタ枠に取り付けたとき、フィルタ枠下流側の内側上下面に耳付フィルタの折り形状に対応して設けられた土手部がフィルタの下流側に当接するようになっているので、当該フィルタはこの土手部により折り形状が保持され、かつ下流側で支持されるようになる。
【００５４】
請求項５記載の耳付フィルタのフィルタ枠への取付構造にあっては、耳付フィルタの耳部をフィルタ枠上流側の左右内側面に設けた凹部が受け入れることによりフィルタが取り付けられるようになっているので、耳付フィルタの取り付け、取り外しに手間を取らず、取り替え作業に要する労力と時間とを大幅に削減することができる。
【００５５】
この取付構造にあっては、フィルタ両端部に先端が濾材の濾過方向に下流向きとなるように設けた耳部をフィルタ枠の濾材の濾過方向に上流向きとなるように設けた凹部が受け入れてフィルタをフィルタ枠に取り外し可能に取り付けた場合、当該フィルタが運転時に加わる風圧で下流側に押され、フィルタ端部の耳部もその力で凹部の内壁に密接し、フィルタ両端部とフィルタ枠との間に隙間が生じ難くなるので、エアーリークの発生を確実に防止することができる。
【００５６】
請求項６記載の耳付フィルタのフィルタ枠への取付構造にあっては、フィルタ両端部が上流側で支えられるとともにフィルタ下流側が土手部により支持され、その折り形状が保持されるようになっているので、運転時の風圧や取り扱い時に加わる外力によって変形したり破損したりすることがない。
【００５７】
請求項７記載の耳付フィルタのフィルタ枠への取付構造にあっては、従来より使用されているフィルタ枠を用いることができるという利点があり、また耳部はプレフィルタ枠をフィルタ枠に止め付けるときにこれらの間に挟んで固定して取り外し可能に取り付けることができるようになっているので、フィルタの取り付け、取り外しに手間を取らない。また、このフィルタの耳部はプレフィルタ枠に挟まれて固定されているので、フィルタ枠との間に隙間が生じることがなく、エアーリークが発生することもない。
【００５８】
請求項８記載の耳付フィルタのフィルタ枠への取付構造にあっては、フィルタ両端部が上流側で支えられるとともにフィルタ下流側が土手部により支持され、その折り形状が保持されるようになっているので、運転時の風圧や取り扱い時に加わる外力によって変形したり破損したりすることがない。
【図面の簡単な説明】
【図１】本発明の耳付フィルタを示した斜視図。
【図２】本発明の耳付フィルタの別の態様を示した斜視図。
【図３】本発明の耳付フィルタをフィルタ枠内に取り付けた状態を示した平面図。
【図４】本発明の耳付フィルタをフィルタ枠内に取り付ける別の態様を示した平面図。
【図５】本発明の耳付フィルタをフィルタ枠内に取り付けるさらに別の態様を示した拡大平面図。
【図６】従来のユニット型フィルタを示した斜視図。
【図７】フィルタ枠内に取り付けた取り替え式フィルタが風圧で変形している状態を示す斜視図。
【符号の説明】
１１・・・耳付フィルタ
１３・・・耳部
１４・・・フィルタ枠
１５・・・凹部
１６・・・土手部
１７・・・プレフィルタ枠[0001]
[Industrial application fields]
The present invention relates to a filter with ears, a filter frame, and a structure for attaching the filter with ears to a filter frame. Specifically, the filter with ears that can handle only the filter alone, can be easily attached to and removed from the filter frame, and can prevent air leakage reliably, and the structure of the filter frame and the filter with the ear filter attached to the filter frame About.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, as shown in FIG. 6, the filter 1 has been handled in a form (unit type filter) integrally joined to the filter frame 2 for the purpose of protecting the filter 1 from vibration during transportation or replacement.
[0003]
However, a 9 mm thick slope or a 1 mm thick steel plate is used for the filter frame, and its weight is as heavy as 6 to 15 kg. It took a lot of labor and time for work and transportation work.
[0004]
Also, when discarding the filter that is joined and integrated with the filter frame, the steel plate used as a frame will not burn, and even if using plywood, fixing nails or tuckers to fix the filter Since the tool is used, there is a problem that it must be separated from the filter and disposed of separately.
[0005]
In addition, when handling in such a form that is joined and integrated with such a filter frame, the filter frame has a service life of 6 to 24 months even though the filter frame has a useful life of 10 to 15 years. However, it is necessary to take a very wasteful measure of discarding even a sufficiently usable filter frame together with the filter.
[0006]
Furthermore, since the filter frame is made of plywood or steel plate and cannot be reduced in volume, it has to be transported as a box, and a large space has to be secured accordingly.
[0007]
Therefore, the top and bottom of the filter and both ends of the filter are reinforced with plastic or non-woven fabric as a filter that can eliminate the disadvantages of the conventional filter frame bonded and integrated, such as poor handling, complicated disposal, and volume reduction. There have also been proposals for dealing with the above problems so that they can be handled only by filters.
[0008]
However, in this filter, as shown in FIG. 7, the filter 1 itself does not have sufficient strength, and is deformed by the wind pressure during use, and a gap is formed between the filter frame 2 and air leakage. There was a fault that it was easy to generate.
[0009]
The present invention has been made in view of such circumstances, and can be handled only by a filter, can be easily attached to and detached from a filter frame, and can reliably prevent air leakage, and a filter with an ear An object of the present invention is to provide a structure for attaching the frame and the filter with the ear to the filter frame.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a filter housed in the filter frame, and is formed at both ends of the folded filter.Provided with the tip facing downstream in the filtration direction of the filter mediaL-shaped ears in cross section on the left and right inner surfaces upstream of the filter frameTo be upstream in the filtration direction of the filter mediaBy being received in the provided recess, or the earHooked on the left and right walls upstream of the filter frame,The gist of the present invention is a filter with ears characterized in that the filter is detachably attached to the filter frame by being sandwiched between the left and right side surfaces on the upstream side of the filter frame by the pre-filter frame.
[0011]
The invention according to claim 2The filter is housed inside the filter frame and has an L-shaped ear section provided at both ends of the folded filter, and the tip is provided at the ear section so that the tip is downstream in the filtering direction of the filter medium. The filter can be removed from the filter frame by hooking the hook into a recess provided on the left and right inner surfaces on the upstream side of the filter frame so as to be upstream in the filtration direction of the filter medium. The gist of the present invention is a filter with ears characterized in that the filter can be attached to the earphone.
[0012]
The invention according to claim 3 is a filter frame for housing the filter with the ears provided with the L-shaped ears at the both ends of the folded filter inside the frame, on the left and right inner surfaces on the upstream side of the filter frame.To be upstream in the filtration direction of the filter mediaIn the recessed portion provided, the ear filterProvided with the tip facing downstream in the filtration direction of the filter mediaThe gist of the filter frame is characterized in that the filter is detachably attached by receiving the ear portion.
[0013]
The gist of the invention of claim 4 is a filter frame characterized in that a bank portion is provided on the inner upper and lower surfaces on the downstream side of the filter frame corresponding to the folded shape of the filter with the ear.
[0014]
The invention according to claim 5 is provided at both ends of the folded filter.Provided with the tip facing downstream in the filtration direction of the filter mediaL-shaped ears on the left and right inner surfaces on the upstream side of the filter frameTo be upstream in the filtration direction of the filter mediaThe gist of the attachment structure of the filter with ears to the filter frame, wherein the filter with ears is detachably attached to the filter frame by receiving the recessed portion provided.
[0015]
According to a sixth aspect of the present invention, a filter with an ear provided with an L-shaped ear section provided at both ends of the filter is provided on the inner upper and lower surfaces on the downstream side of the filter frame corresponding to the folded shape of the filter with the ear. A structure for attaching the filter with ears to the filter frame, wherein the concave parts provided on the left and right inner surfaces on the upstream side of the filter frame are attached by receiving the ears of the filter with ears while being in contact with the bank part Was the gist.
[0016]
The invention according to claim 7 is provided at both ends of the folded filter.Hook the L-shaped ears of the cross-section provided so that the tip is downstream in the filtration direction of the filter medium on the left and right walls on the upstream side of the filter frame.An attachment structure of an ear filter to a filter frame, wherein the ear filter is detachably attached to the filter frame by being sandwiched between left and right side surfaces on the upstream side of the filter frame by a pre-filter frame. The summary was taken.
[0017]
In the invention according to claim 8, the filter with the ear provided with the L-shaped ears provided at both ends of the filter is provided on the inner upper and lower surfaces on the downstream side of the filter frame corresponding to the folded shape of the filter with the ears. A structure for attaching a filter with an ear to a filter frame, wherein the ear filter is attached to the right and left side surfaces on the upstream side of the filter frame by sandwiching the ear part of the filter with an ear between the pre-filter frames. Was the gist.
[0018]
[Action]
The filter with ears 11 according to claim 1 allows the ears 13 having an L-shaped cross section provided at both ends of the filter 11 to be received in the recesses 15 provided on the left and right inner surfaces on the upstream side of the filter frame 14, thereby moving to the filter frame 14. Removable attachment is made.
[0019]
Moreover, this filter 11 with an ear | edge isHooks 13 with L-shaped cross sections provided so that the tip is downstream in the filtration direction of the filter medium N are hooked on the left and right walls on the upstream side of the filter frame 14,Removable attachment to the filter frame 14 is also performed by sandwiching the pre-filter frame 17 between the left and right side surfaces on the upstream side of the filter frame 14.
[0020]
Further, the filter with ear 11 is provided such that the tips of the ears 13 provided at both ends of the filter 11 are directed downstream in the filtration direction of the filter medium N. The ear parts 13 are provided with the filter medium N of the filter frame 14. When the filter 11 is received in a recess 15 provided so as to be upstream in the filtration direction and the end of the filter 11 is detachably attached, wind pressure during operation is applied to the filter 11 so that the filter 11 is on the downstream side. The ear 13 at the end of the filter 11 is brought into close contact with the inner wall of the recess 15 by the force, and it is difficult for a gap to be formed between the both ends of the filter 11 and the filter frame 14, thereby preventing the occurrence of air leaks. It is like that.
[0021]
The filter with ears 11 according to claim 2 has ears 13 at both ends of the filter 11.The tip is provided in the downstream direction in the filtration direction of the filter medium NHook part 13a on the left and right inner surfaces upstream of filter frame 14To be upstream in the filtration direction of the filter medium NBy attaching to the provided recess 15, attachment to the filter frame 14 is performed.
[0022]
The filter frame 14 according to claim 3 is configured to filter against wind pressure applied to the downstream side during operation by the recesses 15 provided on the left and right inner surfaces on the upstream side of the filter frame 14 receiving the ear portions 13 of the filter 11 with ears. The both ends of 11 are supported stably, and the filter 11 can be detachably attached.
[0023]
The filter frame 14 is provided such that the tips of the ears 13 provided at both ends of the filter 11 are directed downstream in the filtration direction of the filter medium N, and the ear parts 13 are formed of the filter medium N of the filter frame 14. When the filter 11 is received in a recess 15 provided so as to be upstream in the filtration direction and the filter 11 end is detachably attached, wind pressure during operation is applied to the filter 11 so that the filter 11 moves downstream. As a result, the ear 13 at the end of the filter 11 is brought into close contact with the inner wall of the recess 15 by the force, so that it is difficult for a gap to be formed between both ends of the filter 11 and the filter frame 14, thereby preventing air leaks. It has become.
[0024]
When the filter 11 is attached to the filter frame 14, the bank portion 16 provided on the inner upper and lower surfaces on the downstream side of the filter frame 14 so as to correspond to the folded shape of the filter 11 with the ear is filtered. The filter 11 is held in a folded shape by the bank portion 16 and is supported on the downstream side.
[0025]
In the structure for attaching the filter with ears to the filter frame according to claim 5, the ears 13 of the filter with ears 11 are received by the recesses 15 provided on the left and right inner surfaces on the upstream side of the filter frame 14. Removable attachment is made.
[0026]
Further, in this mounting structure, the tips of the ears 13 provided at both ends of the filter 11 are provided so as to be downstream in the filtration direction of the filter medium N, and the ears 13 serve as the filter medium of the filter frame 14. When the filter 11 is received in a recess 15 provided so as to be upstream in the filtration direction of N and the filter 11 end is detachably attached, wind pressure during operation is applied to the filter 11 so that the filter 11 is downstream. Pushed to the side The ear portion 13 at the end of the filter 11 is in close contact with the inner wall of the recess 15 by the force, and it is difficult for a gap to be formed between both ends of the filter 11 and the filter frame 14, thereby preventing the occurrence of air leaks. Yes.
[0027]
In the structure for attaching the filter with ears to the filter frame according to claim 6, both ends of the filter 11 are received by receiving the ears 13 of the filter with ears 11 by the recesses 15 provided on the left and right inner surfaces on the upstream side of the filter frame 14. When the filter 11 is attached to the filter frame 14, the bank portion 16 provided on the inner upper and lower surfaces on the downstream side of the filter frame 14 corresponding to the folded shape of the filter 11 with the ears is supported. The filter 11 is held in a folded shape by the bank 16 and is supported on the downstream side.
[0028]
In the structure for attaching the filter with ears according to claim 7 to the filter frame,Hooks 13 having L-shaped cross sections provided at both ends of the filter 11 with ears so that the tips are downstream in the filtration direction of the filter medium N are hooked on the left and right walls on the upstream side of the filter frame 14, and the ears 13 are attached to the filter frame. 14 On the left and right side of the upstream sideBy sandwiching with the pre-filter frame 17, the filter with the ear is detachably attached to the filter frame.
[0029]
In the structure for attaching the filter with ears to the filter frame according to claim 8, both ends of the filter 11 are obtained by sandwiching the ear portions 13 of the filter with ears 11 between the left and right side surfaces upstream of the filter frame 14 with the pre-filter frame 17. When the filter 11 is attached to the filter frame 14, the bank portion 16 provided on the inner upper and lower surfaces on the downstream side of the filter frame 14 corresponding to the folded shape of the filter 11 with the ears is supported. The filter 11 is held in a folded shape by the bank 16 and is supported on the downstream side.
[0030]
【Example】
Hereinafter, a filter with ears, a filter frame, and a structure for attaching the filter with ears to the filter frame of the present invention will be described in detail with reference to the drawings. The filter with ears of the present invention is obtained by folding a filter medium having a shape-retaining property such as a nonwoven fabric, paper, glass fiber paper, or the like that has been used so far into a predetermined fold shape. It is. For example, a pleated material only, or a pleated material (primary folding process) and a W-shaped (secondary folding process) to increase the surface area can be used.
[0031]
The one shown in FIG. 1 is obtained by adhering a non-woven fabric 12 having a U-shaped cross section to a top and bottom portion of a pleated filter medium N, and cutting the nonwoven fabric 12 alternately leaving a bent piece at a predetermined interval. 2, the pleated filter medium N is cut to a predetermined size, and reinforcing bands 18 made of a nonwoven fabric or a plastic plate are alternately bonded to each end of the cut filter medium N in the width direction. is there. The filter 11 in FIG. 1 opens and closes on the side cut by using a folded piece that is not cut for each cutting unit as a hinge, and the filter 11 in FIG. 2 opens and closes by using a reinforcing band 18 for each cutting unit. The filter frame can be folded and handled separately. The filter 11 is not limited to the one shown in FIGS. 1 and 2, but a conventional pleated filter medium is bent into a W shape, and a nonwoven fabric or a plastic plate is pasted on the top and bottom of the filter. Anything that holds the shape of a double zigzag can be used.
[0032]
The ear 13 is an L-shaped projecting piece provided at both ends of the filter 11 and has such rigidity that the shape cannot be easily broken by wind pressure during use or external force applied during handling, such as a nonwoven fabric or plastic plate impregnated with resin. The sheet material having When the filter 11 is attached to the filter frame 14, the ear 13 is provided with the tip thereof facing downstream as shown in FIGS. 3 and 4, and as shown in FIG. 5. Some are provided to face upstream.
[0033]
For example, as shown in FIG. 3, a recess 15 made of a slit-shaped groove is provided on the left and right inner surfaces on the upstream side of the filter frame 14. The end of the filter 11 is attached by inserting the tip of the ear 13 into the inside, and a recess 15 having a wide bottom surface is provided on the left and right inner surfaces on the upstream side of the filter frame 14, and the rising surface of the recess 15 is provided. The end of the filter 11 is hooked to the end of the filter 11 so that the end of the filter 11 is attached. The tip of the ear 13 is bent into a U-shaped cross section, and the tip of the bent ear 13 is Similarly, it is possible to cite a fitting that is fitted to a recess 15 provided in a U-shaped cross-section so as to be attached to the filter frame 14.
[0034]
In addition, as shown in FIG. 5, for example, as shown in FIG.Provided with the tip facing downstream in the filtration direction of the filter medium NHook part 13a is provided, and the hook part 13a at the tip of the ear part 13 is attached to the left and right inner side surfaces upstream of the filter frame 14.To be upstream in the filtration direction of the filter medium NFor example, the filter can be attached to the filter frame 14 by being hooked to the recess 15 having a V-shaped or U-shaped cross section.
[0035]
Thus, when the ear | edge part 13 is received in the recessed part 15 of the filter frame 14, and the filter 11 end part is detachably attached, the air pressure at the time of a driving | running | working is added to the said filter 11, and the filter 11 is downstream. The ear 13 at the end of the filter 11 is brought into close contact with the inner wall of the recess 15 by the force, and it is difficult for a gap to be formed between the both ends of the filter 11 and the filter frame 14, thereby preventing the occurrence of air leaks. It becomes like this.
[0036]
It should be noted that the ear 13 is joined to the end of the filter 11 via an adhesive, and a hot melt resin is applied to the ear and / or the end of the filter, and both are integrated by heating and pressurizing. It may be. By providing the ears 13 at both ends of the filter, both ends of the filter are reinforced at the same time, and it is difficult to cause a problem that the filter is damaged during handling.
[0037]
Moreover, you may provide the ear | edge part 13 in the whole length direction of a filter edge part. In this case, the concave portion 15 having a length corresponding to the ear portion is formed on the left and right inner surfaces on the upstream side of the filter frame 14.To be upstream in the filtration direction of the filter medium NWhen it is provided and accepted, the gap between the filter end and the left and right inner surfaces on the upstream side of the filter frame is completely blocked by the ears, and the prevention of air leakage is more reliable. .
[0038]
As shown in FIG. 3, the filter frame 14 accommodates the filter 11 with ears inside the frame 14, and the outer shape thereof is a box shape, and the downstream side is formed into a W shape according to the shape of the filter. But you can. Moreover, the material is not particularly limited, and may be any of wooden, iron, plastic and the like. Recesses 15 for receiving the ears 13 of the filter with ears 11 are formed on the left and right inner surfaces on the upstream side of the filter frame 14.To be upstream in the filtration direction of the filter medium NIs provided.
[0039]
The recessed part 15 receives the ear | edge part 13 of the said filter 11 with an ear | edge, and hold | maintains so that this may not remove | deviate easily. As a preferable mode, a slit-like groove into which the tip of the ear 13 is inserted as shown in FIG. 3 in accordance with the mode of the ear of the filter 11 or a tip of the ear 13 as shown in FIG. One with a V-shaped or U-shaped cross-section to which the provided hook 13a is hooked, one with a wide bottom surface, with the tip of the ear 13 hooked on its rising surface, and folded into a U-shaped cross-section There can be mentioned, for example, those which are provided in a U-shaped cross section corresponding to the tip of the bent ear 13 so that the tip of the ear 13 is fitted. 5 only needs to be able to hook the hook portion 13a at the tip of the ear portion 13, the shape thereof may be a slit-like groove in addition to that shown in FIG. Then, by inserting the ear part 13 of the filter 11 with ears into the concave part 15 and receiving it by fitting it, the filter 11 can stably support the downstream wind pressure applied during operation. And detachable attachment is made.
[0040]
Further, on the inner upper and lower surfaces on the downstream side of the filter frame 14, bank portions 16 are provided corresponding to the folded shape of the filter with ear 11. The bank portion 16 is provided in the same double zigzag shape corresponding to the double zigzag folded shape of the filter with ears 11 shown in FIGS. 1 and 2, and when the filter 11 is attached to the filter frame 14, the filter 11 is in contact with the bank 16 so that the folded shape is maintained and supported on the downstream side.
[0041]
In the embodiment shown in FIG. 3, both ends of the filter 11 are supported by receiving the ear portion 13 in the recess 15 of the filter frame 14 on the upstream side, and the downstream side of the filter 11 abuts on the bank portion 16 on the downstream side. However, the filter 11 may be supported only on the upstream side.
[0042]
The size, height, etc. of the bank portion of the filter frame 14 are not particularly limited, and are provided corresponding to the folded shape of the filter with the ear, and the folded shape of the filter is brought into contact with the downstream side of the filter 11. Any device can be used as long as it has the effect of holding and supporting it downstream.
[0043]
Next, another attachment structure for attaching to the filter frame of the filter with ears will be described. As shown in FIG. 4, this mounting structure is used when the folded filter 11 with the ears is put into the filter frame 14.Provided with the tip facing downstream in the filtration direction of the filter medium NThe protruding ear 13 protrudes to the outside of both side surfaces upstream of the filter frame 14And hook it on the left and right walls upstream of the filter frame 14The filter 11 is attached by sandwiching the ear 13 with a pre-filter frame 17.
[0044]
In this mounting structure, it is not necessary to use a structure provided with recesses 15 on the left and right inner surfaces on the upstream side of the filter frame 14 as in the above-described mounting structure, and a conventionally used filter frame can be used. There is an advantage that you can. Moreover, since the ear | edge part 13 can be fixed and attached by pinching | interposing between these when a pre-filter frame is fixed to a filter frame, it does not take time to attach and remove a filter. Further, since the ear portion of the filter is fixed by being sandwiched between the pre-filter frames, there is no gap between the filter frames and no air leak occurs.
[0045]
Further, as shown in FIG. 4, both ends of the filter 11 are supported by sandwiching the ear portion 13 with the pre-filter frame 17 on the upstream side, and the ears provided on the inner upper and lower surfaces on the downstream side of the filter frame 14. The filter 11 can be supported on the downstream side by the bank portion 16 corresponding to the folded shape of the attached filter 11. In this case, the downstream side of the filter 11 abuts on the bank portion 16, and the folded shape of the filter is held by the bank portion 16.
[0046]
【The invention's effect】
By providing the above configuration, in the filter with ears according to claim 1, both ends of the filter are provided.The tip should be downstream in the filtration direction of the filter mediaThe provided L-shaped ears on the left and right inner surfaces on the upstream side of the filter frameProvided to be downstream in the filtration direction of the filter mediumWhen the recess is received, or the ear part of the filter with the ear is sandwiched by the pre-filter frame on the left and right side surfaces on the upstream side of the filter frame, the filter can be detachably attached to the filter frame. Therefore, labor and time required for the replacement work can be greatly reduced without taking time and effort to attach and remove the filter with the ear.
[0047]
In addition, in this filter with ears,Provided with the tip facing downstreamThe ear of the filter frameProvided to be downstream in the filtration direction of the filter mediumWhen the filter is received in the recess and attached to the filter frame, the filter is pushed downstream by the wind pressure applied during operation, the ears of the filter end are also in close contact with the inner wall of the recess by the force, and both ends of the filter and the filter frame As a result, it is difficult for a gap to be formed between them, so that the occurrence of air leak is surely prevented.
[0048]
In addition, even when the ear is attached with a pre-filter frame, the filter is sandwiched and fixed between the filter frames, so there is no gap between both ends of the filter and the filter frame, causing air leaks. I don't have to.
[0049]
In addition, in this filter with ears, it can be securely attached to the filter frame by the recess of the filter frame or by the pre-filter frame, so that only the filter can be handled alone during transportation, filter replacement work, The labor required for transportation work can be greatly reduced. Moreover, in this filter with an ear | edge, by taking an aspect like FIG.1 and FIG.2, it can fold small for every cutting | disconnection unit, and the space for conveyance and storage can be made small.
[0050]
In the filter with ears according to claim 2, the ear part having an L-shaped cross sectionMake the tip of the filter face downstream in the filtration direction of the filter mediaInstall the hooks on the left and right inner surfaces on the upstream side of the filter frame.To be upstream in the filtration direction of the filter mediaSince it is attached to the filter frame by being hooked in the provided recess, the attachment and removal of the filter with the ear can be easily and reliably performed.
[0051]
In the filter frame according to claim 3, on the left and right inner surfaces on the upstream side of the filter frame.To be upstream in the filtration direction of the filter mediaIn the recessed part providedProvided the tip to be downstream in the filtration direction of the filter mediumBy accepting the ears, both ends of the filter are stably supported against the wind pressure applied to the downstream side during operation, so it does not take time to install and remove the filter with ears, and labor required for replacement work And time can be greatly reduced.
[0052]
In this filter frame, the filterProvided at both ends so that the tip is downstream in the filtration direction of the filter mediumEarProvided upstream in the filtration direction of the filter mediumWhen the concave part is received and attached, the filter is pushed downstream by the wind pressure applied during operation, the ear part of the filter end part is also in close contact with the inner wall of the concave part, and both end parts of the filter are left and right side surfaces upstream of the filter frame. Therefore, it is difficult for a gap to be formed between both ends of the filter and the filter frame, and the occurrence of air leak can be reliably prevented.
[0053]
5. The filter frame according to claim 4, wherein when the filter is attached to the filter frame, the bank portion provided on the inner upper and lower surfaces on the downstream side of the filter frame corresponding to the folded shape of the filter with the ear is on the downstream side of the filter. Therefore, the filter is held in a folded shape by the bank and is supported on the downstream side.
[0054]
In the structure for attaching the filter with ears to the filter frame according to claim 5, the filter is attached by receiving the recesses provided on the left and right inner side surfaces on the upstream side of the filter frame in the ear part of the filter with ears. Therefore, labor and time required for replacement work can be greatly reduced without taking time and effort to attach and remove the filter with the ear.
[0055]
In this mounting structure, the filterProvided at both ends so that the tip is downstream in the filtration direction of the filter mediumThe ear of the filter frameProvided upstream in the filtration direction of the filter mediumWhen the recess is received and the filter is detachably attached to the filter frame, the filter is pushed downstream by the wind pressure applied during operation, and the ears of the filter end are also in close contact with the inner wall of the recess by the force. Since it is difficult for a gap to be formed between the filter frame and the filter frame, the occurrence of air leak can be reliably prevented.
[0056]
In the structure for attaching the filter with ears to the filter frame according to claim 6, both ends of the filter are supported on the upstream side, and the downstream side of the filter is supported by the bank portion so that the folded shape is maintained. Therefore, it will not be deformed or damaged by wind pressure during operation or external force applied during handling.
[0057]
The attachment structure of the filter with ears to the filter frame according to claim 7 has an advantage that a conventionally used filter frame can be used, and the ear part holds the pre-filter frame on the filter frame. When attaching, it can be fixed by being sandwiched between them so that it can be removably attached. Further, since the ear portion of the filter is fixed by being sandwiched between the pre-filter frames, there is no gap between the filter frames and no air leak occurs.
[0058]
In the structure for attaching the filter with ears to the filter frame according to claim 8, both ends of the filter are supported on the upstream side, and the downstream side of the filter is supported by the bank portion, so that the folded shape is maintained. Therefore, it will not be deformed or damaged by wind pressure during operation or external force applied during handling.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an ear filter of the present invention.
FIG. 2 is a perspective view showing another embodiment of the filter with ears of the present invention.
FIG. 3 is a plan view showing a state in which the filter with ears of the present invention is mounted in a filter frame.
FIG. 4 is a plan view showing another aspect in which the filter with the ear of the present invention is attached in the filter frame.
FIG. 5 is an enlarged plan view showing still another embodiment in which the filter with ears of the present invention is mounted in the filter frame.
FIG. 6 is a perspective view showing a conventional unit type filter.
FIG. 7 is a perspective view showing a state where a replaceable filter attached in a filter frame is deformed by wind pressure.
[Explanation of symbols]
11 ... Ear filter
13 ... Ear part
14 ... Filter frame
15 ... recess
16 ... bank
17 ... Pre-filter frame

Claims

The filter is housed inside the filter frame, and has L-shaped ears with cross-sections provided at both ends of the folded filter so that the tips are downstream in the filtration direction of the filter medium. By being received in a recess provided on the inner side so as to be upstream in the filtration direction of the filter medium , or the ear is hooked on the left and right walls upstream of the filter frame , and the prefilter is placed on the left and right side of the filter frame upstream. A filter with an ear, wherein the filter is detachably attached to the filter frame by being sandwiched between the frames.

A filter housed inside the filter frame, having an L-shaped ear section provided at both ends of the folded filter, and provided at the ear section so that the tip is downstream in the filtering direction of the filter medium. The filter can be removed from the filter frame by hooking the hook into a recess provided on the left and right inner surfaces on the upstream side of the filter frame so as to be upstream in the filtration direction of the filter medium. A filter with ears, characterized in that it can be attached to a filter.

A filter frame that houses a filter with ears having L-shaped ears at both ends of the folded filter inside the frame, on the left and right inner surfaces on the upstream side of the filter frame , facing upstream in the filtration direction of the filter medium The filter is removably attached by receiving an ear provided so that the tip of the filter with the ear is directed downstream in the filtration direction of the filter medium in the recess provided to be Filter frame.

The filter frame according to claim 3, wherein a bank portion is provided on the inner upper and lower surfaces on the downstream side of the filter frame so as to correspond to the folded shape of the filter with the ear.

L-shaped ears with cross-sections provided at both ends of the folded filter so that the tips are downstream in the filtration direction of the filter medium so that the left and right inner surfaces on the upstream side of the filter frame are upstream in the filtration direction of the filter medium the by recess formed accepts, structure for mounting the filter frame of the filter with ears the ear with the filter is characterized in that it has to be attached removably to the filter frame.

The filter with the ear provided with the L-shaped ears provided at both ends of the filter abuts on the bank provided on the inner upper and lower surfaces on the downstream side of the filter frame corresponding to the folded shape of the filter with the ear, and the filter 6. The structure for attaching an ear filter to a filter frame according to claim 5, wherein concave portions provided on left and right inner side surfaces on the upstream side of the frame are attached by receiving ear portions of the filter with ears.

Hook the L-shaped ears provided at the both ends of the folded filter so that the tips are downstream in the filtration direction of the filter medium, on the left and right walls on the upstream side of the filter frame. A structure for attaching an ear filter to a filter frame, wherein the ear filter is detachably attached to the filter frame by being sandwiched between side filters by a pre-filter frame.

The filter with the ear provided with the L-shaped ears provided at both ends of the filter abuts on the bank provided on the inner upper and lower surfaces on the downstream side of the filter frame corresponding to the folded shape of the filter with the ear, and the filter The attachment structure to the filter frame of the filter with ears according to claim 7, wherein the ear part of the filter with ears is attached to the left and right side surfaces on the upstream side of the frame by sandwiching the ear parts with a pre-filter frame.