JP4113707B2 - Filter paper and filter device provided with the same - Google Patents

Filter paper and filter device provided with the same Download PDF

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JP4113707B2
JP4113707B2 JP2001391207A JP2001391207A JP4113707B2 JP 4113707 B2 JP4113707 B2 JP 4113707B2 JP 2001391207 A JP2001391207 A JP 2001391207A JP 2001391207 A JP2001391207 A JP 2001391207A JP 4113707 B2 JP4113707 B2 JP 4113707B2
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mountain fold
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valley fold
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JP2003190730A (en
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圭子 安間
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Wako Filter Technology Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、通過する流体からごみや埃等を除去する濾紙と、この濾紙を備えて構成されるフィルタ装置に関する。
【０００２】
【従来の技術】
フィルタ装置は不織布等を折り畳んでなる濾紙を、流体取入口と流体排出口とが形成されたケース内に保持した構成となっており、流体取入口より取り入れられた流体（例えば空気やオイル）中に含まれるごみや埃等は、流体排出口よりケース外に排出されるまでの間に濾紙において除去される。
【０００３】
図６は従来のフィルタ装置の一例としてのエアクリーナーの構成を示したものである。このエアクリーナーにおいては、空気取入口８２が形成されて下方に開口した形状の上部ケース８１と、空気排出口８６が形成されて上方に開口した形状の下部ケース８５との間に山折り部９１と谷折り部９２とが交互に位置するように蛇腹状に折り畳まれた濾紙９０が上下の枠部材９５，９６により上下方向から挟持された状態で収容設置されており、空気取入口８２より取り入れられた空気は濾紙９０においてごみや埃等が除去された後、空気排出口８６よりエアクリーナーの外部に排出される。上部ケース８１と下部ケース８５とは、下部ケース８５に設けられたレバーラッチ８８を上部ケース８１に設けられた係止突起８４に係止することにより着脱自在に結合されるようになっており、内部に収容された濾紙９０は定期的に清掃若しくは新しいものに交換できるようになっている。
【０００４】
【発明が解決しようとする課題】
ところで、このような従来のフィルタ装置において、濾紙が蛇腹状に折り畳まれた状態でケース内に収容されるのは、限られたケース内のスペースにおいて濾紙の表面積（濾過面積）をできるだけ大きくしたいがためである。濾紙をできるだけ小さく折り畳むことができれば、より広い濾過面積を確保することができるので、そのフィルタ装置における濾紙の交換時期或いは寿命を長引かせることができる。また、同じ大きさの濾紙であっても、より小さく折り畳むことができれば、同じ濾過面積（濾過性能）を有しつつ、ケースの大きさをより小さくすることができるので、フィルタ装置を従来に比してコンパクトなものにすることができる。このようなことから、従来とほぼ同一形状でありながらできるだけ小さく折り畳まれた濾紙、及びこのような濾紙が用いられたフィルタ装置が望まれていた。
【０００５】
本発明はこのような問題に鑑みてなされたものであり、従来とほぼ同一形状でありながらできるだけ小さく折り畳まれた濾紙、及びこのような濾紙が用いられて全体が小型化されたフィルタ装置、或いは従来とほぼ同一大きさでありながらごみや埃の除去性能を向上させて濾紙の交換頻度を少なくすることができる構成のフィルタ装置を提供することを目的としている。
【０００６】
【課題を解決するための手段】
このような目的を達成するため、本発明に係る濾紙は、平面状に展開したときに、前後方向に交互に連続して位置する複数ずつの左側山折り線（Ｌ１１）及び左側谷折り線（Ｌ３１）と、左側山折り線（Ｌ１１）及び左側谷折り線（Ｌ３１）の右方において、前後方向に交互に連続して位置する複数ずつの右側山折り線（Ｌ１２）及び右側谷折り線（Ｌ３２）と、左側山折り線（Ｌ１１）の右端と右側山折り線（Ｌ１２）の左端との間に位置して前方が右斜め方向に傾くように延びた第１谷折り線（Ｌ４１）と、左側谷折り線（Ｌ３１）の右端と右側谷折り線（Ｌ３２）の左端との間に位置して前方が左斜め方向に傾くように延びた第１山折り線（Ｌ２１）と、第１谷折り線（Ｌ４１）の前端と左側山折り線（Ｌ１１）の右端を結んでなる第２山折り線（Ｌ２２）と、第１谷折り線（Ｌ４１）の前端と右側山折り線（Ｌ１２）の左端を結んでなる第３山折り線（Ｌ２３）と、第１谷折り線（Ｌ４１）の後端と左側山折り線（Ｌ１１）の右端を結んでなる第４山折り線（Ｌ２４）と、第１谷折り線（Ｌ４１）の後端と右側山折り線（Ｌ１２）の左端を結んでなる第５山折り線（Ｌ２５）と、第１山折り線（Ｌ２１）の前端と左側谷折り線（Ｌ３１）の右端とを結んでなる第６の山折り線（Ｌ２６）と、第１山折り線（Ｌ２１）の前端と右側谷折り線（Ｌ３２）の左端とを結んでなる第２谷折り線（Ｌ４２）と、第１山折り線（Ｌ２１）の後端と左側谷折り線（Ｌ３１）の右端と結んでなる第３谷折り線（Ｌ４３）と、第１山折り線（Ｌ２１）の後端と右側谷折り線（Ｌ３２）の左端と結んでなる第７の山折り線（Ｌ２７）と、前後に隣接して位置する第１谷折り線（Ｌ４１）と第１山折り線（Ｌ２１）において、第１谷折り線（Ｌ４１）の後端と第１山折り線（Ｌ２１）の前端とを結んでなる第８山折り線（Ｌ２８）と、前後に隣接して位置する第１山折り線（Ｌ２１）と第１谷折り線（Ｌ４１）において、第１山折り線（Ｌ２１）の後端と第１谷折り線（Ｌ４１）の前端とを結んでなる第９山折り線（Ｌ２９）と、前後に隣接して位置する左側山折り線（Ｌ１１）と左側谷折り線（Ｌ３１）において、前方に位置する左側山折り線（Ｌ１１）の右端と後方に位置する左側谷折り線（Ｌ３１）の右端とを結んでなる第４谷折り線（Ｌ４４）と、前後に隣接して位置する右側谷折り線（Ｌ３２）と右側山折り線（Ｌ１２）において、前方に位置する右側谷折り線（Ｌ３２）の左端と後方に位置する右側山折り線（Ｌ１２）の左端とを結んでなる第５谷折り線（Ｌ４５）とが形成される。
【０００８】
また或いは、本発明に係る濾紙は、平面状に展開したときに、前後方向に交互に連続して位置する複数ずつの左側山折り線（Ｌ１１１）及び左側谷折り線（Ｌ１３１）と、左側山折り線（Ｌ１１１）及び左側谷折り線（Ｌ１３１）の右方において、前後方向に交互に連続して位置する複数ずつの右側山折り線（Ｌ１１２）及び右側谷折り線（Ｌ１３２）と、左側山折り線（Ｌ１１１）の右端と右側山折り線（Ｌ１１２）の左端との間に位置して前方が左斜め方向に傾くように延びた第１谷折り線（Ｌ１４１）と、左側谷折り線（Ｌ１３１）の右端と右側谷折り線（Ｌ１３２）の左端との間に位置して前方が右斜め方向に傾くように延びた第１山折り線（Ｌ１２１）と、第１谷折り線（Ｌ１４１）の前端と右側山折り線（Ｌ１１２）の左端を結んでなる第２山折り線（Ｌ１２２）と、第１谷折り線（Ｌ１４１）の前端と左側山折り線（Ｌ１１１）の右端を結んでなる第３山折り線（Ｌ１２３）と、第１谷折り線（Ｌ１４１）の後端と右側山折り線（Ｌ１１２）の左端を結んでなる第４山折り線（Ｌ１２４）と、第１谷折り線（Ｌ１４１）の後端と左側山折り線（Ｌ１１１）の右端を結んでなる第５山折り線（Ｌ１２５）と、第１山折り線（Ｌ１２１）の前端と右側谷折り線（Ｌ１３２）の左端とを結んでなる第６の山折り線（Ｌ１２６）と、第１山折り線（Ｌ１２１）の前端と左側谷折り線（Ｌ１３１）の右端とを結んでなる第２谷折り線（Ｌ１４２）と、第１山折り線（Ｌ１２１）の後端と右側谷折り線（Ｌ１３２）の左端と結んでなる第３谷折り線（Ｌ１４３）と、第１山折り線（Ｌ１２１）の後端と左側谷折り線（Ｌ１３１）の右端と結んでなる第７の山折り線（Ｌ１２７）と、前後に隣接して位置する第１谷折り線（Ｌ１４１）と第１山折り線（Ｌ１２１）において、第１谷折り線（Ｌ１４１）の後端と第１山折り線（Ｌ１２１）の前端とを結んでなる第８山折り線（Ｌ１２８）と、前後に隣接して位置する第１山折り線（Ｌ１２１）と第１谷折り線（Ｌ１４１）において、第１山折り線（Ｌ１２１）の後端と第１谷折り線（Ｌ１４１）の前端とを結んでなる第９山折り線（Ｌ１２９）と、前後に隣接して位置する右側山折り線（Ｌ１１２）と右側谷折り線（Ｌ１３２）において、前方に位置する右側山折り線（Ｌ１１２）の左端と後方に位置する右側谷折り線（Ｌ１３２）の左端とを結んでなる第４谷折り線（Ｌ１４４）と、前後に隣接して位置する左側谷折り線（Ｌ１３１）と左側山折り線（Ｌ１１１）において、前方に位置する左側谷折り線（Ｌ１３１）の右端と後方に位置する左側山折り線（Ｌ１１１）の右端とを結んでなる第５谷折り線（Ｌ１４５）とが形成される。
【０００９】
このような濾紙によれば、山折り部の一部と谷折り部の一部それぞれに折り込み部が形成されて全体として中央に圧縮された形状となるので、このような折り込み部が形成されていない従来のものと比較した場合、折り畳み前の濾紙の形状が同じであれば、同じ濾過面積を有しつつ全体的に幅の小さい（細い）フィルタ装置を構成することができる。また、折り畳み後の濾紙の幅を従来と同じにするのであれば、折り畳み前の濾紙の幅をより大きくすることができるので濾過面積が大きくなり、ごみや埃の除去性能を高めることができる。
【００１０】
また、本発明に係るフィルタ装置（例えば、実施形態におけるエアクリーナー５０）は、上記濾紙を流体取入口と流体排出口とが形成されたケース内に保持して構成する。このようなフィルタ装置では上記本発明に係る濾紙を有しているので、従来と同じ濾過面積を確保しつつ全体のサイズをコンパクトなものにすることができる。或いは、同じ全体サイズであっても、濾過面積を従来に比して大きくすることができるので、濾紙の交換頻度を低減することができる。
【００１１】
【発明の実施の形態】
以下、図面を参照して本発明の好ましい実施形態について説明する。図１〜図３は本発明に係る濾紙の一実施形態を示している。図１は本実施形態に係る濾紙１を上方斜めから見た斜視図であり、図２は本濾紙１を下方斜めから見た斜視図である。また、図３は本濾紙１を平面状に展開した展開図を、図１における上方が上面になるように示したものである。この図３においては山折り線を一点鎖線で示し、谷折り線を破線で示している。
【００１２】
本発明に係る濾紙１は、図３に示す展開図に従って折り畳むことにより得られるが、このようにして得られる濾紙１は、山折り部１０，１０，…と谷折り部２０，２０，…とが交互に位置するように折り畳まれた形状になる。そして、山折り部１０の折り線（山折り線Ｌ１１，Ｌ１２）と斜めに交わる線（谷折り線Ｌ４１）を谷折りしてこの山折り部１０の一部（ここではほぼ中央部）に凹状の折り込み部１５が形成されるとともに、谷折り部２０の折り線（谷折り線Ｌ３１，Ｌ３２）と斜めに交わる線（山折りＬ２１）を山折りして谷折り部２０の一部（ここではほぼ中央部）に凸状（但し、図２のように本濾紙１の下方より見た場合は凹状となる）の折り込み部２５が形成される。折り畳み前における濾紙１の形状は長方形であることが好ましく、長短比が大きければより好ましい。濾紙１の材料は不織布が好ましいが、これに限られるものではない。
【００１３】
本濾紙は図３に示すように、平面状に展開した場合、前後方向に交互に連続して位置する複数ずつの左側山折り線Ｌ１１及び左側谷折り線Ｌ３１と、左側山折り線Ｌ１１及び左側谷折り線Ｌ３１の右方において、前後方向に交互に連続して位置する複数ずつの右側山折り線Ｌ１２及び右側谷折り線Ｌ３２とが形成される。また、左側山折り線Ｌ１１の右端と右側山折り線Ｌ１２の左端との間の位置には前方が右斜め方向に傾くように延びた第１谷折り線Ｌ４１が形成され、左側谷折り線Ｌ３１の右端と右側谷折り線Ｌ３２の左端との間の位置には前方が左斜め方向に傾くように延びた第１山折り線Ｌ２１が形成される。
【００１４】
更に、第１谷折り線Ｌ４１の前端と左側山折り線Ｌ１１の右端を結んでなる第２山折り線Ｌ２２と、第１谷折り線Ｌ４１の前端と右側山折り線Ｌ１２の左端を結んでなる第３山折り線Ｌ２３と、第１谷折り線Ｌ４１の後端と左側山折り線Ｌ１１の右端を結んでなる第４山折り線Ｌ２４と、第１谷折り線Ｌ４１の後端と右側山折り線Ｌ１２の左端を結んでなる第５山折り線Ｌ２５とが形成され、第１山折り線Ｌ２１の前端と左側谷折り線Ｌ３１の右端とを結んでなる第６の山折り線Ｌ２６と、第１山折り線Ｌ２１の前端と右側谷折り線Ｌ３２の左端とを結んでなる第２谷折り線Ｌ４２と、第１山折り線Ｌ２１の後端と左側谷折り線Ｌ３１の右端と結んでなる第３谷折り線Ｌ４３と、第１山折り線Ｌ２１の後端と右側谷折り線Ｌ３２の左端と結んでなる第７の山折り線Ｌ２７とが形成される。
【００１５】
更には、前後に隣接して位置する第１谷折り線Ｌ４１と第１山折り線Ｌ２１において、第１谷折り線Ｌ４１の後端と第１山折り線Ｌ２１の前端とを結んでなる第８山折り線Ｌ２８と、前後に隣接して位置する第１山折り線Ｌ２１と第１谷折り線Ｌ４１において、第１山折り線Ｌ２１の後端と第１谷折り線Ｌ４１の前端とを結んでなる第９山折り線Ｌ２９とが形成される。また、前後に隣接して位置する左側山折り線Ｌ１１と左側谷折り線Ｌ３１において、前方に位置する左側山折り線Ｌ１１の右端と後方に位置する左側谷折り線Ｌ３１の右端とを結んでなる第４谷折り線Ｌ４４と、前後に隣接して位置する右側谷折り線Ｌ３２と右側山折り線Ｌ１２において、前方に位置する右側谷折り線Ｌ３２の左端と後方に位置する右側山折り線Ｌ１２の左端とを結んでなる第５谷折り線Ｌ４５とが形成される。
【００１６】
また、本実施形態に係る濾紙１は、図１及び図２に示す濾紙１の左右を反対にした形状にすることも可能であって、これを平面状に展開した場合には、図４に示すように、前後方向に交互に連続して位置する複数ずつの左側山折り線Ｌ１１１及び左側谷折り線Ｌ１３１と、左側山折り線Ｌ１１１及び左側谷折り線Ｌ１３１の右方において、前後方向に交互に連続して位置する複数ずつの右側山折り線Ｌ１１２及び右側谷折り線Ｌ１３２とが形成される。また、左側山折り線Ｌ１１１の右端と右側山折り線Ｌ１１２の左端との間の位置には前方が左斜め方向に傾くように延びた第１谷折り線Ｌ１４１が形成され、左側谷折り線Ｌ１３１の右端と右側谷折り線Ｌ１３２の左端との間の位置には前方が右斜め方向に傾くように延びた第１山折り線Ｌ１２１が形成される。
【００１７】
更に、第１谷折り線Ｌ１４１の前端と右側山折り線Ｌ１１２の左端を結んでなる第２山折り線Ｌ１２２と、第１谷折り線Ｌ１４１の前端と左側山折り線Ｌ１１１の右端を結んでなる第３山折り線Ｌ１２３と、第１谷折り線Ｌ１４１の後端と右側山折り線Ｌ１１２の左端を結んでなる第４山折り線Ｌ１２４と、第１谷折り線Ｌ１４１の後端と左側山折り線Ｌ１１１の右端を結んでなる第５山折り線Ｌ１２５とが形成され、第１山折り線Ｌ１２１の前端と右側谷折り線Ｌ１３２の左端とを結んでなる第６の山折り線Ｌ１２６と、第１山折り線Ｌ１２１の前端と左側谷折り線Ｌ１３１の右端とを結んでなる第２谷折り線Ｌ１４２と、第１山折り線Ｌ１２１の後端と右側谷折り線Ｌ１３２の左端と結んでなる第３谷折り線Ｌ１４３と、第１山折り線Ｌ１２１の後端と左側谷折り線Ｌ１３１の右端と結んでなる第７の山折り線Ｌ１２７とが形成される。
【００１８】
更には、前後に隣接して位置する第１谷折り線Ｌ１４１と第１山折り線Ｌ１２１において、第１谷折り線Ｌ１４１の後端と第１山折り線Ｌ１２１の前端とを結んでなる第８山折り線Ｌ１２８と、前後に隣接して位置する第１山折り線Ｌ１２１と第１谷折り線Ｌ１４１において、第１山折り線Ｌ１２１の後端と第１谷折り線Ｌ１４１の前端とを結んでなる第９山折り線Ｌ１２９とが形成される。また、前後に隣接して位置する右側山折り線Ｌ１１２と右側谷折り線Ｌ１３２において、前方に位置する右側山折り線Ｌ１１２の左端と後方に位置する右側谷折り線Ｌ１３２の左端とを結んでなる第４谷折り線Ｌ１４４と、前後に隣接して位置する左側谷折り線Ｌ１３１と左側山折り線Ｌ１１１において、前方に位置する左側谷折り線Ｌ１３１の右端と後方に位置する左側山折り線Ｌ１１１の右端とを結んでなる第５谷折り線Ｌ１４５とが形成される。
【００１９】
これら本発明に係る濾紙においては、山折り部１０の一部と谷折り部２０の一部それぞれに折り込み部（凹状の折り込み部１５と凸状の折り込み部２５）が形成されており、図１の左側（図２では右側）に整列した山折り部１０ａと図１の右側（図２では左側）に整列した山折り部１０ｂとは前後方向に少しずれたものとなり（左右の谷折り部２０ａ，２０ｂについても同様）、その分濾紙１全体が中央に圧縮された形状となる。このため、このような折り込み部１０，２０が形成されていない従来の濾紙と比較した場合、折り畳み前の濾紙の形状が同じであれば、同じ濾過面積を有しつつ全体的に幅の小さい（細い）フィルタ装置を構成することができる。また、折り畳み後の濾紙の幅を従来と同じにするのであれば、折り畳み前の濾紙の幅をより大きくすることができるので濾過面積が大きくなり、ごみや埃の除去性能を高めることができる。
【００２０】
図５は上記本発明に係る濾紙１を備えたフィルタ装置の一実施形態であるエアクリーナー５０の構成を（Ａ），（Ｂ），（Ｃ）の順に組み立てが進行するように示した分解斜視図である。このエアクリーナー５０は、空気取入口６２が形成されて下方に開口した形状の上部ケース６１と、空気排出口６６が形成されて上方に開口した形状の下部ケース６５とからなるケース６０内に上記本発明に係る濾紙１を収容した構成となっている。濾紙１は上下の枠部材７１，７２により上下方向から挟持された上でケース６０内に着脱自在に取り付けられる。上部ケース６１と下部ケース６５は、下部ケース６５の前後に設けられた２つのレバーラッチ６８（図５では前方側のみ示す）のフック部６８ａを上部ケース６１の前後に設けられた係止突起６４（図５では前方側のみ示す）に係止した上でレバーラッチ６８のレバー部６８ａを揺動させてロックすることにより両ケース６１，６５を結合することができる。また、これら両ケース６１，６５の結合は自在に解除することができるので、内部に収容された濾紙１は定期的に清掃或いは新しいものに交換することができる。
【００２１】
このようなエアクリーナー５０は例えば、自動車や自動二輪車を始めとするエンジンの吸気流路中に設置される。空気取入口６２より取り入れられた外部からの空気は上部ケース６１内に入って濾紙１を上方から下方へ通過し、下部ケース６５より空気排出口６６を通ってケース６１の外部に排出され、エンジン内に取り込まれる。空気取入口６２より取り入れられた空気中に含まれるごみや埃は空気が濾紙１を通過するときに除去されるのであるが、本エアクリーナー５０においては上記本発明に係る濾紙１を用いているので、従来と同じ濾過面積を確保しつつ全体のサイズをコンパクトなものにすることができる。或いは、同じ全体サイズであっても、濾過面積を従来に比して大きくすることができるので、濾紙１の交換頻度を低減することができる。
【００２２】
これまで本発明の好ましい実施形態について説明してきたが、本発明の範囲は上述の実施形態において示したものに限定されない。例えば、本発明に係る上記濾紙１の折り方は、図３に示した展開図において、一点鎖線を山折りに、また鎖線を谷折りにするように説明したが、これを反対にして一点鎖線を谷折りに、また鎖線を谷折りにしても構わない。また、本発明に係る濾紙は、山折り部と谷折り部とが交互に位置するように折り畳まれた濾紙において、山折り部の折り線と斜めに交わる線を谷折りしてこの山折り部の一部に凹状の折り込み部を形成するとともに、谷折り部の折り線と斜めに交わる線を山折りしてこの谷折り部の一部に凸状の折り込み部を形成して全体が中央に圧縮された形状となればよい（平面状に展開したときの展開図が必ずしも図３又は図４に示した通りになる必要はない）。
【００２３】
また、山折り部の一部に形成される凹状の折り込み部と、谷折り部の一部に形成される凸状の折り込み部は、上記実施形態に示したように、山折り部又は谷折り部の中央に設けられる必要はなく、端に寄っていても構わない。更に、これら山折り部に設けられる凹状の折り込み部及び谷折り部に設けられる凸状の折り込み部は、一つの山折り部或いは谷折り部当たりに複数ずつ設けられていてもよく、このようにすることにより、濾紙をより小さく折り畳むことが可能となる。
【００２４】
また、上述の実施形態において示したフィルタ装置のケースの形状は一つの例に過ぎず、空気取入口と空気排出口とが形成されて本発明に係る濾紙を内部に収容できるものであれば、どのような形状を有していても構わない。更に、本発明に係るフィルタ装置は空気中のごみや埃等を除去するもの（すなわちエアクリーナー）に限られず、液体中のごみや埃等を除去するものであってもよい。すなわち、本発明に係るフィルタ装置は、流体取入口と流体排出口とを有して構成されたケース内に本発明に係る濾紙が保持されていればよく、ごみや埃を濾過する対象は空気に限られずオイル等であってもよい。
【００２５】
【発明の効果】
以上説明したように、本発明に係る濾紙によれば、山折り部の一部と谷折り部の一部それぞれに折り込み部が形成されて全体として中央に圧縮された形状となるので、このような折り込み部が形成されていない従来のものと比較した場合、折り畳み前の濾紙の形状が同じであれば、同じ濾過面積を有しつつ全体的に幅の小さい（細い）フィルタ装置を構成することができる。また、折り畳み後の濾紙の幅を従来と同じにするのであれば、折り畳み前の濾紙の幅をより大きくすることができるので濾過面積が大きくなり、ごみや埃の除去性能を高めることができる。
【００２６】
また、本発明に係るフィルタ装置によれば、上記本発明に係る濾紙を有しているので、従来と同じ濾過面積を確保しつつ全体のサイズをコンパクトなものにすることができる。或いは、同じ全体サイズであっても、濾過面積を従来に比して大きくすることができるので、濾紙の交換頻度を低減することができる。
【図面の簡単な説明】
【図１】本実施形態に係る濾紙１を上方斜めから見た斜視図である。
【図２】本濾紙を下方斜めから見た斜視図である。
【図３】本濾紙を平面状に展開した展開図を、図１における上方が上面になるように示したものである。
【図４】本発明の別形態に係る濾紙の部分展開図である。
【図５】本発明に係る濾紙を有してなるフィルタ装置の一実施形態であるエアクリーナーの構成を（Ａ），（Ｂ），（Ｃ）の順に組み立てが進行するように示した分解斜視図である。
【図６】従来のフィルタ装置の一例であるエアクリーナーの構成を示す分解斜視図である。
【符号の説明】
１ 濾紙
１０ 山折り部
１５ 凹状の折り込み部
２０ 谷折り部
２５ 凸状の折り込み部
５０ エアクリーナー（フィルタ装置）
６０ ケース
６１ 上部ケース
６２ 空気取入口
６４ 係止突起
６５ 下部ケース
６６ 空気排出口
６８ レバーラッチ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filter paper that removes dust, dust, and the like from a passing fluid, and a filter device that includes the filter paper.
[0002]
[Prior art]
The filter device has a configuration in which a filter paper formed by folding a nonwoven fabric or the like is held in a case in which a fluid intake port and a fluid discharge port are formed, and in a fluid (for example, air or oil) taken from the fluid intake port. The dust, dust, etc. contained in the filter paper are removed by the filter paper before being discharged out of the case through the fluid discharge port.
[0003]
FIG. 6 shows the structure of an air cleaner as an example of a conventional filter device. In this air cleaner, a mountain fold 91 is formed between an upper case 81 formed with an air intake 82 and opened downward, and a lower case 85 formed with an air outlet 86 and opened upward. The filter paper 90 folded in a bellows shape so that the folds 92 and the valley folds 92 are alternately positioned is accommodated and installed in a state of being sandwiched from above and below by the upper and lower frame members 95 and 96, and is taken in from the air intake 82. After the dust, dust and the like are removed from the filter paper 90, the air is discharged from the air outlet 86 to the outside of the air cleaner. The upper case 81 and the lower case 85 are detachably coupled by locking a lever latch 88 provided on the lower case 85 to a locking projection 84 provided on the upper case 81. The filter paper 90 accommodated therein can be periodically cleaned or replaced with a new one.
[0004]
[Problems to be solved by the invention]
By the way, in such a conventional filter device, the filter paper is accommodated in the case in a state of being folded in a bellows shape, in order to make the surface area (filtering area) of the filter paper as large as possible in a limited space in the case. Because. If the filter paper can be folded as small as possible, a wider filtration area can be ensured, and the filter paper replacement time or life in the filter device can be prolonged. Moreover, even if the filter paper has the same size, if it can be folded smaller, the size of the case can be further reduced while having the same filtration area (filtration performance). And can be made compact. For this reason, a filter paper that has almost the same shape as that of the prior art and is folded as small as possible, and a filter device using such a filter paper have been desired.
[0005]
The present invention has been made in view of such a problem, and is a filter paper that is substantially the same shape as that of the prior art and is folded as small as possible, and a filter device in which such a filter paper is used to reduce the overall size, or An object of the present invention is to provide a filter device having a structure that can improve the dust and dust removal performance and reduce the frequency of replacement of filter paper while having almost the same size as the conventional one.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, when the filter paper according to the present invention is developed in a planar shape, a plurality of left mountain fold lines (L11) and left valley fold lines ( L31), and a plurality of right mountain fold lines (L12) and right valley fold lines (L12) that are alternately positioned in the front-rear direction on the right side of the left mountain fold line (L11) and the left valley fold line (L31). L32) and a first valley fold line (L41) which is located between the right end of the left mountain fold line (L11) and the left end of the right mountain fold line (L12) and extends so that the front is inclined obliquely to the right. A first mountain fold line (L21) positioned between the right end of the left trough fold line (L31) and the left end of the right trough fold line (L32), and extending forward so as to be inclined diagonally to the left; A first connecting the front end of the valley fold line (L41) and the right end of the left mountain fold line (L11). A mountain fold line (L22), a third mountain fold line (L23) connecting the front end of the first valley fold line (L41) and the left end of the right mountain fold line (L12), and a first valley fold line (L41) The fourth mountain fold line (L24) formed by connecting the rear end and the right end of the left mountain fold line (L11), and the rear end of the first valley fold line (L41) and the left end of the right mountain fold line (L12) are connected. A fifth mountain fold line (L25), a sixth mountain fold line (L26) connecting the front end of the first mountain fold line (L21) and the right end of the left valley fold line (L31), A second valley fold line (L42) connecting the front end of the mountain fold line (L21) and the left end of the right valley fold line (L32), a rear end of the first mountain fold line (L21), and a left valley fold line ( A third valley fold line (L43) connected to the right end of L31), a rear end of the first mountain fold line (L21), and a left end of the right valley fold line (L32); In the seventh mountain fold line (L27), the first valley fold line (L41) and the first mountain fold line (L21) located adjacent to each other in the front and rear, the rear end of the first valley fold line (L41) And an eighth mountain fold line (L28) connecting the front end of the first mountain fold line (L21), a first mountain fold line (L21) and a first valley fold line (L41) located adjacent to each other in the front-rear direction. , The ninth mountain fold line (L29) connecting the rear end of the first mountain fold line (L21) and the front end of the first valley fold line (L41), and the left mountain fold line located adjacent to the front and rear (L11) and the left valley fold line (L31), the fourth valley fold line formed by connecting the right end of the left mountain fold line (L11) located at the front and the right end of the left valley fold line (L31) located behind. (L44) and the right valley fold line (L32) and right mountain fold line (L12) located adjacent to the front and rear. Thus, a fifth valley fold line (L45) formed by connecting the left end of the right trough fold line (L32) positioned in front and the left end of the right trough fold line (L12) positioned in the rear is formed.
[0008]
Alternatively, when the filter paper according to the present invention is developed in a planar shape, the left mountain fold line (L111) and the left valley fold line (L131) and the left mountain On the right side of the fold line (L111) and the left valley fold line (L131), a plurality of right mountain fold lines (L112) and right valley fold lines (L132), which are alternately and continuously positioned in the front-rear direction, and the left mountain A first valley fold line (L141) that is positioned between the right end of the fold line (L111) and the left end of the right mountain fold line (L112) and extends so that the front is inclined obliquely to the left, A first mountain fold line (L121) located between the right end of L131) and a left end of the right trough fold line (L132) and extending forward inclining to the right; and a first trough fold line (L141) Connect the front end of and the left end of the right mountain fold line (L112) The second mountain fold line (L122), the third mountain fold line (L123) connecting the front end of the first valley fold line (L141) and the right end of the left mountain fold line (L111), and the first valley fold line The fourth mountain fold line (L124) connecting the rear end of the line (L141) and the left end of the right mountain fold line (L112), the rear end of the first valley fold line (L141) and the left mountain fold line (L111) A fifth mountain fold line (L125) connecting the right ends of the first fold line (L125), a sixth mountain fold line (L126) connecting the front end of the first mountain fold line (L121) and the left end of the right valley fold line (L132). A second valley fold line (L142) connecting the front end of the first mountain fold line (L121) and the right end of the left valley fold line (L131), and the rear end and right side of the first mountain fold line (L121) The third valley fold line (L143) connected to the left end of the valley fold line (L132) and the first mountain fold line L121) and a seventh mountain fold line (L127) connected to the right end of the left valley fold line (L131), and a first valley fold line (L141) and a first mountain fold adjacent to each other in the front-rear direction. In the line (L121), the 8th mountain fold line (L128) connecting the rear end of the first valley fold line (L141) and the front end of the first mountain fold line (L121) is positioned adjacent to the front and rear. The ninth mountain fold formed by connecting the rear end of the first mountain fold line (L121) and the front end of the first valley fold line (L141) at the first mountain fold line (L121) and the first valley fold line (L141). Line (L129), right mountain fold line (L112) and right valley fold line (L132) located adjacent to each other in the front-rear direction and the right valley located at the left end and the rear of the right mountain fold line (L112) Fourth valley fold line (L1) connecting the left end of the fold line (L132) 44) and the left mountain fold line located at the right end and the rear of the left valley fold line (L131) located at the front of the left valley fold line (L131) and the left mountain fold line (L111) located adjacent to each other. A fifth valley fold line (L145) formed by connecting the right end of (L111) is formed.
[0009]
According to such a filter paper, a folded portion is formed in each of a part of the mountain fold part and a part of the valley fold part, and the whole is compressed to the center, so that such a folded part is formed. Compared with a conventional one that does not fold, if the shape of the filter paper before folding is the same, a filter device having the same filtration area and a small overall width (thin) can be configured. Further, if the width of the filter paper after folding is made the same as that of the conventional filter paper, the width of the filter paper before folding can be increased, so that the filtration area is increased, and the dust and dust removal performance can be enhanced.
[0010]
The filter device according to the present invention (for example, the air cleaner 50 in the embodiment) is configured by holding the filter paper in a case in which a fluid intake port and a fluid discharge port are formed. Since such a filter device has the filter paper according to the present invention, it is possible to make the entire size compact while ensuring the same filtration area as that of the prior art. Or even if it is the same whole size, since the filtration area can be enlarged compared with the past, the replacement frequency of a filter paper can be reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of a filter paper according to the present invention. FIG. 1 is a perspective view of the filter paper 1 according to the present embodiment as viewed obliquely from above, and FIG. 2 is a perspective view of the filter paper 1 as viewed obliquely from below. FIG. 3 is a development view of the filter paper 1 developed in a planar shape, with the upper side in FIG. 1 being the upper surface. In FIG. 3, the mountain fold line is indicated by a one-dot chain line, and the valley fold line is indicated by a broken line.
[0012]
The filter paper 1 according to the present invention is obtained by folding according to the development shown in FIG. 3, and the filter paper 1 obtained in this way includes a mountain fold part 10, 10,... And a valley fold part 20, 20,. It becomes the shape folded so that may be located alternately. Then, a line (valley fold line L41) obliquely intersecting with the fold lines (mountain fold lines L11, L12) of the mountain fold part 10 is valley-folded and concave in a part of the mountain fold part 10 (substantially the central part here). Fold portion 15 is formed, and a line (mountain fold L21) obliquely intersecting with a fold line (valley fold lines L31, L32) of valley fold portion 20 is mountain-folded and a part of valley fold portion 20 (here, A folded portion 25 having a convex shape (substantially when viewed from below the filter paper 1 as shown in FIG. 2) is formed in a substantially central portion. The shape of the filter paper 1 before folding is preferably rectangular, and it is more preferable if the length ratio is large. The material of the filter paper 1 is preferably a non-woven fabric, but is not limited thereto.
[0013]
As shown in FIG. 3, when the filter paper is developed in a plane, a plurality of left mountain fold lines L11 and left valley fold lines L31, left mountain fold lines L11 and left On the right side of the valley fold line L31, a plurality of right mountain fold lines L12 and right valley fold lines L32 that are alternately and continuously positioned in the front-rear direction are formed. Further, a first valley fold line L41 is formed at a position between the right end of the left mountain fold line L11 and the left end of the right mountain fold line L12. A first mountain fold line L21 is formed at a position between the right end of the right side and the left end of the right valley fold line L32 so that the front is inclined in a left oblique direction.
[0014]
Further, the second mountain fold line L22 connecting the front end of the first valley fold line L41 and the right end of the left mountain fold line L11, and the front end of the first valley fold line L41 and the left end of the right mountain fold line L12 are connected. The third mountain fold line L23, the fourth mountain fold line L24 connecting the rear end of the first valley fold line L41 and the right end of the left mountain fold line L11, the rear end of the first valley fold line L41 and the right mountain fold A fifth mountain fold line L25 formed by connecting the left ends of the line L12, a sixth mountain fold line L26 formed by connecting the front end of the first mountain fold line L21 and the right end of the left valley fold line L31, A second valley fold line L42 connecting the front end of the single mountain fold line L21 and the left end of the right valley fold line L32, and a rear end of the first mountain fold line L21 and the right end of the left valley fold line L31. 3 valley fold line L43, the rear end of the first mountain fold line L21 and the left end of the right valley fold line L32 A seventh convex fold L27 is formed comprising.
[0015]
Further, in the first valley fold line L41 and the first mountain fold line L21 that are adjacent to each other in the front-rear direction, the eighth valley formed by connecting the rear end of the first valley fold line L41 and the front end of the first mountain fold line L21. In the mountain fold line L28, the first mountain fold line L21 and the first valley fold line L41 located adjacent to each other in the front-rear direction, the rear end of the first mountain fold line L21 and the front end of the first valley fold line L41 are connected. The ninth mountain fold line L29 is formed. Further, in the left mountain fold line L11 and the left valley fold line L31 adjacent to each other, the right end of the left mountain fold line L11 positioned in front and the right end of the left valley fold line L31 positioned in the rear are connected. In the fourth valley fold line L44, the right valley fold line L32 and the right mountain fold line L12 that are adjacent to each other in the front-rear direction, the left edge of the right valley fold line L32 that is located in front and the right mountain fold line L12 that is located behind A fifth valley fold line L45 connecting the left end is formed.
[0016]
Further, the filter paper 1 according to the present embodiment can be formed in a shape in which the left and right sides of the filter paper 1 shown in FIGS. 1 and 2 are reversed. As shown in the figure, the left side mountain fold line L111 and the left side valley fold line L131, which are alternately and continuously positioned in the front and back direction, and the left side mountain fold line L111 and the left side valley fold line L131 are alternately arranged in the front and rear direction. A plurality of right-side mountain fold lines L112 and right-side valley fold lines L132 that are continuously located are formed. Further, a first valley fold line L141 is formed at a position between the right end of the left mountain fold line L111 and the left end of the right mountain fold line L112 so that the front is inclined obliquely to the left, and the left valley fold line L131 is formed. A first mountain fold line L121 is formed at a position between the right end of the right side and the left end of the right trough fold line L132 so that the front is inclined in the right oblique direction.
[0017]
Furthermore, the second mountain fold line L122 connecting the front end of the first valley fold line L141 and the left end of the right mountain fold line L112, and the front end of the first valley fold line L141 and the right end of the left mountain fold line L111 are connected. The third mountain fold line L123, the fourth mountain fold line L124 connecting the rear end of the first valley fold line L141 and the left end of the right mountain fold line L112, the rear end of the first valley fold line L141 and the left mountain fold A fifth mountain fold line L125 connecting the right end of the line L111, a sixth mountain fold line L126 connecting the front end of the first mountain fold line L121 and the left end of the right valley fold line L132, A second valley fold line L142 connecting the front end of the single mountain fold line L121 and the right end of the left valley fold line L131, and a rear end of the first mountain fold line L121 and the left end of the right valley fold line L132. Three valley fold line L143 and first mountain fold line L A seventh convex fold L127 is formed Naru signed with the right end of the 21 of the rear end and the left concave fold L131.
[0018]
Further, in the first valley fold line L141 and the first mountain fold line L121 that are adjacent to each other in the front-rear direction, the eighth valley formed by connecting the rear end of the first valley fold line L141 and the front end of the first mountain fold line L121. In the mountain fold line L128, the first mountain fold line L121 and the first valley fold line L141 located adjacent to each other in the front-rear direction, the rear end of the first mountain fold line L121 and the front end of the first valley fold line L141 are connected. The ninth mountain fold line L129 is formed. Further, in the right mountain fold line L112 and the right valley fold line L132 which are adjacent to each other, the left end of the right mountain fold line L112 located in front and the left end of the right valley fold line L132 located in the rear are connected. In the fourth valley fold line L144, the left valley fold line L131 and the left mountain fold line L111 located adjacent to each other in the front-rear direction, the left mountain fold line L111 located at the right end and the rear of the left valley fold line L131 located at the front A fifth valley fold line L145 connecting the right ends is formed.
[0019]
In these filter papers according to the present invention, folds (concave folds 15 and convex folds 25) are formed in a part of the mountain fold part 10 and a part of the valley fold part 20, respectively. The mountain fold 10a aligned on the left side (right side in FIG. 2) and the mountain fold 10b aligned on the right side (left side in FIG. 2) of FIG. 1 are slightly shifted in the front-rear direction (left and right valley folds 20a). , 20b), and the entire filter paper 1 is compressed to the center. For this reason, when compared with the conventional filter paper in which such folding parts 10 and 20 are not formed, if the shape of the filter paper before folding is the same, the overall width is small while having the same filtration area ( A (thin) filter device can be constructed. Further, if the width of the filter paper after folding is made the same as that of the conventional filter paper, the width of the filter paper before folding can be increased, so that the filtration area is increased, and the dust and dust removal performance can be enhanced.
[0020]
FIG. 5 is an exploded perspective view showing the structure of an air cleaner 50 which is an embodiment of the filter device provided with the filter paper 1 according to the present invention so that the assembly proceeds in the order of (A), (B), (C). FIG. The air cleaner 50 includes a case 60 including an upper case 61 formed with an air inlet 62 and opened downward, and a lower case 65 formed with an air outlet 66 and opened upward. The filter paper 1 according to the present invention is accommodated. The filter paper 1 is detachably mounted in the case 60 after being sandwiched from above and below by upper and lower frame members 71 and 72. The upper case 61 and the lower case 65 are provided with hook portions 68a of two lever latches 68 (only shown on the front side in FIG. The two cases 61 and 65 can be coupled by engaging and locking the lever portion 68a of the lever latch 68 after locking (only the front side is shown in FIG. 5). Further, since the coupling between the two cases 61 and 65 can be freely released, the filter paper 1 accommodated therein can be periodically cleaned or replaced with a new one.
[0021]
Such an air cleaner 50 is installed, for example, in an intake passage of an engine such as an automobile or a motorcycle. Air from the outside taken in from the air intake 62 enters the upper case 61 and passes through the filter paper 1 from above to below, and is discharged from the lower case 65 through the air discharge port 66 to the outside of the case 61. It is taken in. Dust and dust contained in the air taken in from the air inlet 62 are removed when the air passes through the filter paper 1. In the air cleaner 50, the filter paper 1 according to the present invention is used. Therefore, the entire size can be made compact while ensuring the same filtration area as before. Or even if it is the same whole size, since the filtration area can be enlarged compared with the past, the replacement frequency of the filter paper 1 can be reduced.
[0022]
Although the preferred embodiments of the present invention have been described so far, the scope of the present invention is not limited to those shown in the above-described embodiments. For example, the method for folding the filter paper 1 according to the present invention has been described in the development shown in FIG. 3 such that the one-dot chain line is a mountain fold and the chain line is a valley fold. May be folded in a valley, and the chain line may be folded in a valley. Further, the filter paper according to the present invention is a filter paper folded so that the mountain folds and the valley folds are alternately positioned. A concave fold is formed in a part of the fold, and a line that obliquely intersects with the fold line of the valley fold is mountain-folded to form a convex fold in a part of the valley fold. It is only necessary to have a compressed shape (the developed view when developed in a planar shape is not necessarily as shown in FIG. 3 or FIG. 4).
[0023]
Further, as shown in the above embodiment, the concave folds formed in part of the mountain folds and the convex folds formed in part of the valley folds are It is not necessary to be provided at the center of the part, and it may be close to the end. Furthermore, a plurality of concave folds provided in the mountain folds and convex folds provided in the valley folds may be provided per one mountain fold or valley fold. By doing so, it becomes possible to fold the filter paper smaller.
[0024]
In addition, the shape of the case of the filter device shown in the above-described embodiment is merely an example, as long as the air intake port and the air discharge port are formed and the filter paper according to the present invention can be accommodated therein, It may have any shape. Furthermore, the filter device according to the present invention is not limited to a device that removes dust and dirt in the air (that is, an air cleaner), and may be a device that removes dust and dust in a liquid. That is, the filter device according to the present invention is only required to hold the filter paper according to the present invention in a case having a fluid intake port and a fluid discharge port. The oil is not limited to this.
[0025]
【The invention's effect】
As described above, according to the filter paper according to the present invention, a folded portion is formed in each of a part of the mountain fold part and a part of the valley fold part, and the whole is compressed into the center. If the filter paper before folding has the same shape, the filter device having the same filtration area and the overall width (thin) is configured as compared with the conventional filter that does not have a simple folding part. Can do. Further, if the width of the filter paper after folding is made the same as that of the conventional filter paper, the width of the filter paper before folding can be increased, so that the filtration area is increased, and the dust and dust removal performance can be enhanced.
[0026]
Moreover, according to the filter apparatus which concerns on this invention, since it has the filter paper which concerns on the said invention, the whole size can be made compact, ensuring the same filtration area as the past. Or even if it is the same whole size, since the filtration area can be enlarged compared with the past, the replacement frequency of a filter paper can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a filter paper 1 according to the present embodiment as viewed obliquely from above.
FIG. 2 is a perspective view of the filter paper as viewed obliquely from below.
FIG. 3 is a development view in which the filter paper is developed in a planar shape, with the upper side in FIG. 1 being the upper surface.
FIG. 4 is a partial development view of a filter paper according to another embodiment of the present invention.
FIG. 5 is an exploded perspective view showing a configuration of an air cleaner as an embodiment of a filter device having a filter paper according to the present invention, in which assembly proceeds in the order of (A), (B), (C). FIG.
FIG. 6 is an exploded perspective view showing a configuration of an air cleaner which is an example of a conventional filter device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filter paper 10 Mountain fold part 15 Concave fold part 20 Valley fold part 25 Convex fold part 50 Air cleaner (filter apparatus)
60 Case 61 Upper case 62 Air intake 64 Locking protrusion 65 Lower case 66 Air outlet 68 Lever latch

Claims (3)

平面状に展開したときに、
前後方向に交互に連続して位置する複数ずつの左側山折り線（Ｌ１１）及び左側谷折り線（Ｌ３１）と、
前記左側山折り線（Ｌ１１）及び前記左側谷折り線（Ｌ３１）の右方において、前後方向に交互に連続して位置する複数ずつの右側山折り線（Ｌ１２）及び右側谷折り線（Ｌ３２）と、
前記左側山折り線（Ｌ１１）の右端と前記右側山折り線（Ｌ１２）の左端との間に位置して前方が右斜め方向に傾くように延びた第１谷折り線（Ｌ４１）と、 前記左側谷折り線（Ｌ３１）の右端と前記右側谷折り線（Ｌ３２）の左端との間に位置して前方が左斜め方向に傾くように延びた第１山折り線（Ｌ２１）と、 前記第１谷折り線（Ｌ４１）の前端と前記左側山折り線（Ｌ１１）の前記右端を結んでなる第２山折り線（Ｌ２２）と、
前記第１谷折り線（Ｌ４１）の前端と前記右側山折り線（Ｌ１２）の前記左端を結んでなる第３山折り線（Ｌ２３）と、
前記第１谷折り線（Ｌ４１）の後端と前記左側山折り線（Ｌ１１）の前記右端を結んでなる第４山折り線（Ｌ２４）と、
前記第１谷折り線（Ｌ４１）の後端と前記右側山折り線（Ｌ１２）の前記左端を結んでなる第５山折り線（Ｌ２５）と、
前記第１山折り線（Ｌ２１）の前端と前記左側谷折り線（Ｌ３１）の前記右端とを結んでなる第６の山折り線（Ｌ２６）と、
前記第１山折り線（Ｌ２１）の前端と前記右側谷折り線（Ｌ３２）の前記左端とを結んでなる第２谷折り線（Ｌ４２）と、
前記第１山折り線（Ｌ２１）の後端と前記左側谷折り線（Ｌ３１）の前記右端と結んでなる第３谷折り線（Ｌ４３）と、
前記第１山折り線（Ｌ２１）の後端と前記右側谷折り線（Ｌ３２）の前記左端と結んでなる第７の山折り線（Ｌ２７）と、
前後に隣接して位置する前記第１谷折り線（Ｌ４１）と前記第１山折り線（Ｌ２１）において、前記第１谷折り線（Ｌ４１）の後端と前記第１山折り線（Ｌ２１）の前端とを結んでなる第８山折り線（Ｌ２８）と、
前後に隣接して位置する前記第１山折り線（Ｌ２１）と前記第１谷折り線（Ｌ４１）において、前記第１山折り線（Ｌ２１）の後端と前記第１谷折り線（Ｌ４１）の前端とを結んでなる第９山折り線（Ｌ２９）と、
前後に隣接して位置する前記左側山折り線（Ｌ１１）と前記左側谷折り線（Ｌ３１）において、前方に位置する前記左側山折り線（Ｌ１１）の右端と後方に位置する前記左側谷折り線（Ｌ３１）の右端とを結んでなる第４谷折り線（Ｌ４４）と、
前後に隣接して位置する前記右側谷折り線（Ｌ３２）と前記右側山折り線（Ｌ１２）において、前方に位置する前記右側谷折り線（Ｌ３２）の左端と後方に位置する前記右側山折り線（Ｌ１２）の左端とを結んでなる第５谷折り線（Ｌ４５）とが形成されることを特徴とする濾紙。When deployed flat,
A plurality of left mountain fold lines (L11) and left trough fold lines (L31) that are alternately and continuously positioned in the front-rear direction;
On the right side of the left mountain fold line (L11) and the left valley fold line (L31), a plurality of right mountain fold lines (L12) and right valley fold lines (L32) that are alternately and continuously positioned in the front-rear direction. When,
A first valley fold line (L41) positioned between a right end of the left mountain fold line (L11) and a left end of the right mountain fold line (L12) and extending forward so as to be inclined obliquely to the right; A first mountain fold line (L21) located between the right end of the left trough fold line (L31) and the left end of the right trough fold line (L32) and extending forward so as to be inclined diagonally to the left; A second mountain fold line (L22) formed by connecting a front end of a first valley fold line (L41) and the right end of the left mountain fold line (L11);
A third mountain fold line (L23) connecting the front end of the first valley fold line (L41) and the left end of the right mountain fold line (L12);
A fourth mountain fold line (L24) connecting the rear end of the first valley fold line (L41) and the right end of the left mountain fold line (L11);
A fifth mountain fold line (L25) connecting the rear end of the first valley fold line (L41) and the left end of the right mountain fold line (L12);
A sixth mountain fold line (L26) connecting the front end of the first mountain fold line (L21) and the right end of the left valley fold line (L31);
A second valley fold line (L42) connecting the front end of the first mountain fold line (L21) and the left end of the right valley fold line (L32);
A third valley fold line (L43) formed by connecting the rear end of the first mountain fold line (L21) and the right end of the left valley fold line (L31);
A seventh mountain fold line (L27) connected to the rear end of the first mountain fold line (L21) and the left end of the right valley fold line (L32);
In the first valley fold line (L41) and the first mountain fold line (L21) located adjacent to each other in the front-rear direction, a rear end of the first valley fold line (L41) and the first mountain fold line (L21) An eighth mountain fold line (L28) connecting the front end of
In the first mountain fold line (L21) and the first valley fold line (L41) located adjacent to each other in the front-rear direction, the rear end of the first mountain fold line (L21) and the first valley fold line (L41) The 9th mountain fold line (L29) connecting the front end of
In the left mountain fold line (L11) and the left valley fold line (L31) located adjacent to each other in the front-rear direction, the left valley fold line located at the right end and the rear of the left mountain fold line (L11) located in the front. A fourth valley fold line (L44) connecting the right end of (L31);
In the right valley fold line (L32) and the right mountain fold line (L12) located adjacent to each other in the front-rear direction, the right mountain fold line located at the left end and the rear of the right valley fold line (L32) located forward. A filter paper characterized in that a fifth valley fold line (L45) formed by connecting the left end of (L12) is formed. 平面状に展開したときに、
前後方向に交互に連続して位置する複数ずつの左側山折り線（Ｌ１１１）及び左側谷折り線（Ｌ１３１）と、
前記左側山折り線（Ｌ１１１）及び前記左側谷折り線（Ｌ１３１）の右方において、前後方向に交互に連続して位置する複数ずつの右側山折り線（Ｌ１１２）及び右側谷折り線（Ｌ１３２）と、
前記左側山折り線（Ｌ１１１）の右端と前記右側山折り線（Ｌ１１２）の左端との間に位置して前方が左斜め方向に傾くように延びた第１谷折り線（Ｌ１４１）と、
前記左側谷折り線（Ｌ１３１）の右端と前記右側谷折り線（Ｌ１３２）の左端との間に位置して前方が右斜め方向に傾くように延びた第１山折り線（Ｌ１２１）と、
前記第１谷折り線（Ｌ１４１）の前端と前記右側山折り線（Ｌ１１２）の前記左端を結んでなる第２山折り線（Ｌ１２２）と、
前記第１谷折り線（Ｌ１４１）の前端と前記左側山折り線（Ｌ１１１）の前記右端を結んでなる第３山折り線（Ｌ１２３）と、
前記第１谷折り線（Ｌ１４１）の後端と前記右側山折り線（Ｌ１１２）の前記左端を結んでなる第４山折り線（Ｌ１２４）と、
前記第１谷折り線（Ｌ１４１）の後端と前記左側山折り線（Ｌ１１１）の前記右端を結んでなる第５山折り線（Ｌ１２５）と、
前記第１山折り線（Ｌ１２１）の前端と前記右側谷折り線（Ｌ１３２）の前記左端とを結んでなる第６の山折り線（Ｌ１２６）と、
前記第１山折り線（Ｌ１２１）の前端と前記左側谷折り線（Ｌ１３１）の前記右端とを結んでなる第２谷折り線（Ｌ１４２）と、
前記第１山折り線（Ｌ１２１）の後端と前記右側谷折り線（Ｌ１３２）の前記左端と結んでなる第３谷折り線（Ｌ１４３）と、
前記第１山折り線（Ｌ１２１）の後端と前記左側谷折り線（Ｌ１３１）の前記右端と結んでなる第７の山折り線（Ｌ１２７）と、
前後に隣接して位置する前記第１谷折り線（Ｌ１４１）と前記第１山折り線（Ｌ１２１）において、前記第１谷折り線（Ｌ１４１）の後端と前記第１山折り線（Ｌ１２１）の前端とを結んでなる第８山折り線（Ｌ１２８）と、
前後に隣接して位置する前記第１山折り線（Ｌ１２１）と前記第１谷折り線（Ｌ１４１）において、前記第１山折り線（Ｌ１２１）の後端と前記第１谷折り線（Ｌ１４１）の前端とを結んでなる第９山折り線（Ｌ１２９）と、
前後に隣接して位置する前記右側山折り線（Ｌ１１２）と前記右側谷折り線（Ｌ１３２）において、前方に位置する前記右側山折り線（Ｌ１１２）の左端と後方に位置する前記右側谷折り線（Ｌ１３２）の左端とを結んでなる第４谷折り線（Ｌ１４４）と、
前後に隣接して位置する前記左側谷折り線（Ｌ１３１）と前記左側山折り線（Ｌ１１１）において、前方に位置する前記左側谷折り線（Ｌ１３１）の右端と後方に位置する前記左側山折り線（Ｌ１１１）の右端とを結んでなる第５谷折り線（Ｌ１４５）とが形成されることを特徴とする濾紙。When deployed flat,
A plurality of left mountain fold lines (L111) and left valley fold lines (L131) that are alternately and continuously positioned in the front-rear direction;
On the right side of the left mountain fold line (L111) and the left valley fold line (L131), a plurality of right mountain fold lines (L112) and right valley fold lines (L132) that are alternately and continuously positioned in the front-rear direction. When,
A first valley fold line (L141) located between the right end of the left mountain fold line (L111) and the left end of the right mountain fold line (L112) and extending forward inclining leftward;
A first mountain fold line (L121) located between the right end of the left trough fold line (L131) and the left end of the right trough fold line (L132) and extending forward so as to be inclined obliquely to the right;
A second mountain fold line (L122) connecting the front end of the first valley fold line (L141) and the left end of the right mountain fold line (L112);
A third mountain fold line (L123) connecting the front end of the first valley fold line (L141) and the right end of the left mountain fold line (L111);
A fourth mountain fold line (L124) connecting the rear end of the first valley fold line (L141) and the left end of the right mountain fold line (L112);
A fifth mountain fold line (L125) connecting the rear end of the first valley fold line (L141) and the right end of the left mountain fold line (L111);
A sixth mountain fold line (L126) connecting the front end of the first mountain fold line (L121) and the left end of the right valley fold line (L132);
A second valley fold line (L142) connecting the front end of the first mountain fold line (L121) and the right end of the left valley fold line (L131);
A third valley fold line (L143) formed by connecting a rear end of the first mountain fold line (L121) and the left end of the right valley fold line (L132);
A seventh mountain fold line (L127) connected to the rear end of the first mountain fold line (L121) and the right end of the left valley fold line (L131);
In the first valley fold line (L141) and the first mountain fold line (L121) located adjacent to each other in the front-rear direction, the rear end of the first valley fold line (L141) and the first mountain fold line (L121) The eighth mountain fold line (L128) connecting the front end of
In the first mountain fold line (L121) and the first valley fold line (L141) located adjacent to each other in the front-rear direction, the rear end of the first mountain fold line (L121) and the first valley fold line (L141) The ninth mountain fold line (L129) connecting the front end of
In the right mountain fold line (L112) and the right valley fold line (L132) located adjacent to each other in the front-rear direction, the right valley fold line located at the left end and the rear of the right mountain fold line (L112) located forward. A fourth valley fold line (L144) connecting the left end of (L132);
In the left valley fold line (L131) and the left mountain fold line (L111) located adjacent to each other in the front-rear direction, the left mountain fold line located at the right end and the rear of the left valley fold line (L131) located forward. A filter paper characterized in that a fifth valley fold line (L145) formed by connecting the right end of (L111) is formed. 請求項１〜２のいずれかに記載の濾紙を、流体取入口と流体排出口とが形成されたケース内に保持したことを特徴とするフィルタ装置。3. A filter device, wherein the filter paper according to claim 1 is held in a case in which a fluid inlet and a fluid outlet are formed.
JP2001391207A 2001-12-25 2001-12-25 Filter paper and filter device provided with the same Expired - Fee Related JP4113707B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110945302A (en) * 2017-07-21 2020-03-31 大金工业株式会社 Gas supply device, air conditioner in container, and container refrigeration device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110945302A (en) * 2017-07-21 2020-03-31 大金工业株式会社 Gas supply device, air conditioner in container, and container refrigeration device
CN110945302B (en) * 2017-07-21 2021-03-30 大金工业株式会社 Gas supply device, air conditioner in container, and container refrigeration device

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