JP2004360357A

JP2004360357A - Louver blade and louver

Info

Publication number: JP2004360357A
Application number: JP2003161864A
Authority: JP
Inventors: Narihiro Hatanaka; 成洋畑中
Original assignee: HATANAKA BANKIN KOSAKUSHO KK; KANAGAWA TEKKOSHO KK
Current assignee: HATANAKA BANKIN KOSAKUSHO KK; KANAGAWA TEKKOSHO KK
Priority date: 2003-06-06
Filing date: 2003-06-06
Publication date: 2004-12-24
Anticipated expiration: 2023-06-06
Also published as: JP3712715B2

Abstract

PROBLEM TO BE SOLVED: To provide a louver blade and a louver, capable of reducing a wind speed by eliminating a difference in the passing air volume between an end part and an intermediate part of the louver blade. SOLUTION: This louver blade 1 has an inclined face 3 becoming high toward the inside from the outside, and is a polyhedron. In the louver blade 1, a straightening body 28 is placed in both end parts of the louver blade, the body 28 having a surface 28(a) forming a vertical plane to the outside of the louver blade, a surface 28(d) forming a surface substantially parallel to an inclination of an outside inclined face 3B1, a surface 28(b) forming an inclined face narrowing downward and inward along the outside inclined faces 3B1 and 3B2, and narrowing toward the outside of the louver blade, and a surface 28(c) forming an inclined face expanding toward the outside of the louver blade. COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、ガラリ用羽板に関し、詳細には枠の中に多くの羽板を横に等間隔に並べて取付けてなるガラリに用いる、前記羽板の形状に関するものである。
【０００２】
【従来の技術】
建家の換気や通風を行うために壁あるいはダクトなどの開口部にガラリが取付けられている。このガラリの基本形態は、小幅の薄板からなる羽板の多数を枠の中に横に並べ取付けて構成したもので、羽板は、主として通気を行うことを目的として等間隔に設けられるとともに、雨水が室内あるいはダクト内に入らないようにするため内側が高くなるように傾斜を設けて取付けられている。
【０００３】
また、より雨水が室内あるいはダクト内に入らないようにするため、図１３に示すような断面形状の羽板を用いたものもある。この羽板は、外側から内側に向けて高くなる傾斜面１０３を有し、その傾斜面の上部１０５に、上端に前記傾斜面１０３と同方向に傾斜し、かつ内側に延在する傾斜部１０６を備えた上フランジ部１０７を有し、また傾斜面１０３の下部１０８に下フランジ部１０９を有するガラリ用羽板１０１であって、前記傾斜面１０３が横断面において段状の凹部１０４によって内側傾斜面１０３Ａと外側傾斜面１０３Ｂとに形成されるとともに、内側傾斜面１０３Ａの下部１１０に前記凹部１０４を覆うようにして外向きの突出部１１１，１１２が形成され、また段状の凹部１０４の段板１１３側背面コーナー部１１４に台形状の切欠部１１５が形成されてなる外、更に、前記下フランジ部１０９が外側に勾配面１１６を有する下細りの断面形状に形成され、かつ下部に外向きの突出部１１７が形成されている。（特許文献１参照）
【０００４】
そのガラリでは、風が矢印実線で示すような軌跡で外から内に入るので、風と共に雨（矢印点線で示す）が吹き込んでも、傾斜面が横断面において段状の凹部と前記凹部を覆うようにして外向きの突出部とを形成しているので段状の凹部と外向きに形成した突出部とによる空間部が緩衝空間となって風力が弱められるとともに、飛沫した雨水等は当該空間部内壁に衝突して滞留し、奥への侵入が大きく抑制される。そして更に、段状の凹部の段板側背面コーナー部に台形状の切欠部を形成しているので、空間部を経て上側の羽板の外側傾斜面の背面に沿う風の流れが緩衝され、内側傾斜面の背面に付着し流下する雨水は段板側背面コーナー部の先端より比較的大きな水滴になって落ちるので、水滴が風で飛散し難く下側の羽板表面に落下して外側へと流下するのでガラリ内側への飛散侵入が抑制できる。また、下フランジ部が外側に勾配面を有する下細りの断面形状で、下部に外向きの突出部が形成されているので、下から上に向かう勾配面に沿う風の流れが弱められ、流下する雨水が四方に散り難く、窪みに集水し比較的大きな水滴になって外向きの突出部の先端より落ちるので、水滴が風で飛散し難くなり、羽板間への飛散侵入を少なくできる。
【０００５】
本出願人は、特許文献１のガラリが、雨が正面近くからガラリに吹きつけた場合には効果があるが、上方及び斜め上方からの雨に対しては、特に風雨が強いときに若干雨水の侵入が見られ、改善の余地があることが判明したので、雨風が強い時で雨の吹きつける方向が水平又は上方或いは斜め上方からと広角に吹き込んでも、より通気性を損なうことなく雨水の侵入を防ぐことのできるガラリ用羽板及びガラリを提案した。（特願２００１−３９８２３４号）
【０００６】
【特許文献１】
特開２００２−１６８０６３号公報（第３〜５頁、第３図）
【０００７】
【発明が解決しようとする課題】
これまで出願人は、ガラリ用羽板の羽の形状を工夫することにより、主として雨を随伴する強風に対して、ガラリ用羽板を通過する風速を抑え、かつ、随伴する雨を効率よく捕集して系外に排出できるように調査，研究を行なってきて、それなりの効果を挙げてきた。しかしながら、その後の調査、研究において、上記提案のガラリ用羽板であっても強い風を吹き付けた場合、ガラリ用羽板の巾方向においてガラリ用羽板を通過する風量に大きな差が生じていることが判明した。つまり、ガラリ用羽板に吹き付ける風が風速２０ｍ／ｓ以上で高いほど、ガラリ用羽板による通過風量の抑制、すなわち、風速を抑制する程度が、ガラリ用羽板の巾方向の端部と中間部とで異なり、特に風速３５ｍ／ｓ程度では巾方向における抑制効果に差が大きく生じ、全体として本来求める抑制の効果が出ていなかった。そこで、本発明は、ガラリ用羽板の巾方向、即ち端部と中間部における通過風量の差を無くし、かつ風速を低下することで、随伴する雨の侵入を防ぐことのできるガラリ用羽板及びガラリを提供するものである。
【０００８】
【課題を解決するための手段】
上記の目的を達成するための本発明に係るガラリ用羽板の（請求項１）は、図１に示すように、外側から内側に向けて高くなる傾斜面３を有し、その傾斜面の上部に、上端にかつ内側に延在するＬ字型部を備えた上フランジ部６を有し、また傾斜面の中部と下部とに夫々中フランジ部７と下フランジ部８とを有し、前記傾斜面が横断面において中フランジ部外側にある段状の凹部４Ｂ１、４Ｂ２によって内側傾斜面３Ａと外側傾斜面３Ｂ１、３Ｂ２とに形成されるとともに、内側傾斜面の下部に前記凹部を覆うようにして外向きの突出部１２Ａ、１２Ｂが形成され、また内側傾斜面の上部の上フランジ部外側に段状の凹部４Ａ１、４Ａ２と前記凹部を覆うようにして外向きの突出部１４Ａ、１４Ｂが形成され、また中フランジ部及び上フランジ部において段状の凹部の段板側背面コーナー部１６，１９に台形状の切欠部１７，２０が形成されてなる外、更に、前記下フランジ部が外側に下向きやや内側に垂れる勾配面２１が形成され、かつ下部に、外向き、下向き及び内向きの突出部２２，２３，２４が形成されてなるガラリ用羽板１であって、多面体で、面２８（ａ）がガラリ用羽板の外側に対して垂直面をなし、面２８（ｄ）が外側傾斜面３Ｂ１の傾斜にほぼ平行な面をなし、面２８（ｂ）が外側傾斜面３Ｂ１、３Ｂ２に沿うて下方、かつ内側に狭くなるとともに、ガラリ用羽板の外側に向かって狭くなる傾斜面をなし、面２８（ｃ）がガラリ用羽板の内側に向かって狭くなる傾斜面をなす整流体２８が、ガラリ用羽板の両端部に載置されているものである。
【０００９】
上記の構成では、傾斜面が横断面において段状の凹部によって内側傾斜面と外側傾斜面とに形成されるとともに、内側傾斜面の下部に前記凹部を覆うようにして外向きの突出部を形成しているので、推測ではあるが、外側傾斜面に沿う風の流れは、段状の凹部とこの凹部を覆うようにして外向きに形成した突出部とによる空間部に入ってくる風と凹部で反転した風とが干渉し合って風力が弱められるとともに、飛沫した雨水等は慣性で当該空間部内壁、すなわち凹部に衝突して滞留し、奥への侵入が大きく抑制される。また内側傾斜面の上部の上フランジ部外側に段状の凹部と前記凹部を覆うようにして外向きの突出部が形成されているので、前述のように弱められて内側傾斜面に沿う風の流れは、この凹部と突出部とによってさらに風が弱められるとともに、雨水の奥への侵入がさらに抑制されて効果が増大することになる。しかし、整流体２８が無ければ、ガラリ用羽板間に吹き込む風の流速が早いほど、前述の空間部に入ってくる風と凹部で反転した風とが衝突して干渉し合ってより高い圧力上昇が生じ、この圧力上昇が巾方向の端部へと逃げるため、下流の内側傾斜面の方向へ流れる風の速さは中間部より端部の方がより早くなると考えられる。
【００１０】
本発明に係るガラリ用羽板に装着された整流体２８は、前述の不具合を解消するためのものであって、ガラリ用羽板の端部に載置される。具体的には、整流体２８は、羽板１の両端部で外側傾斜面３Ｂ１、３Ｂ２上で、一部が段状の凹部４Ｂ１に挿着され、かつ下フランジ部８の内向き突起部２４に当接して装着される。図６、７、８、９に示すように整流体２８は多面体であって、以下、整流体の作用は推測も含まれるが、構成する面２８（ｃ）は、段状の凹部４Ｂ１と外向きに形成した突出部１２Ａ，１２Ｂとに囲まれる空間部において羽板１に入ってくる風（イ）と反転した風（ロ）が衝突して干渉し合って該風（ハ）が端部方向へ流れるのを中間部方向、かつ外側へ誘導する役目を担い、また、面２８（ｂ）は、前述の面２８（ｃ）により誘導された風（ニ）と羽板に入ってくる風（イ）と衝突して干渉し合った合流の風（ホ）の大部分を該面２８（ｂ）の外向けに拡がり、かつ、下向けに拡がる面に沿わせて羽板の端部方向、かつ、外側傾斜面に向かう下向きの角度を以って羽板の樋３３方向へ誘導する。これにより外側傾斜面から内側傾斜面へと流入する風（ヘ）の量を抑制する。また、面２８（ａ）と面２８（ｄ）は、外側傾斜面の端部において面２８（ａ）が上の羽板の下フランジ８の内向き突起部２４と当接して羽板の端部を塞ぎ、風が羽板の端部に流入することを阻止する。
【００１１】
前述のように、整流体２８は、ガラリ用羽板間の端部に入ってくる風を阻止すると共に、中間部に入ってくる風（イ）と凹部と外向き突出部で形成した空間部で反転した風（ロ）とが衝突し干渉し合わせて生じた風圧の上昇で端部方向へ流れる合流の風（ハ）を一端中間部方向へ向かわせて入ってくる風（イ）と再び干渉させてから樋のある端部方向へ、かつ、下向きに風の方向を変え、外側傾斜面に沿って樋へ該風（ホ）を誘導する。これにより入ってくる風の外側傾斜面から外向きの突出部の上を内側傾斜面に向かって流入する風（ヘ）の量、つまり、風速を抑制することができる。この風には雨滴が随伴しているから必然的に内部へ流入する雨滴の量も低減する。
【００１２】
また、上記本発明のガラリ用羽板においては、整流体が耐候性、かつ難燃性の弾性体から構成されることがよい。（請求項２）。整流体２８は、その一部を凹部と外向き突出部とに囲まれる空間に、すなわち、凹部４Ｂ１に挿入して、かつ、前面２８（ａ）を下フランジ部の勾配面２１の内向き突起部２４に当接して装着されるからプラスチック製又は発泡プラスチック製の弾性体が好ましく、さらに、外光、外気及び風雨に曝される点において耐候性の材料が、また、ガラリの耐火の点から難燃性の材料が好ましい。
【００１３】
また、上記本発明のガラリ用羽板においては、外向き突出部１２Ａの傾斜角γが前記突出部１２Ａと下フランジ部に形成される下向き突出部２３とを結んだ線に対し下向きに角度１．４±０．２°の範囲をなし、また、外向き突出部１４Ａの傾斜角δが前記突出部１４Ａと中フランジ部に形成される背面コーナー部１６とを結んだ線に対し下向きに角度３．２±０．２°の範囲をなすように形成されてあってもよい（請求項３）。外向き突出部１２Ａの傾斜角γを前述のようにすることで、推測ではあるが、羽板間に入る風から内側傾斜面の方へ流入する分流分を少なくし、残り分が段状の凹部４Ｂ１、４Ｂ２で反転して、入ってくる風と衝突、干渉し合った後、整流体により樋３３方向の端部へ合流の風が誘導されて、結果的に系外に出ることになるから好ましい。また、外向き突出部１４Ａの傾斜角δを外向き突出部１２Ａの傾斜角γの場合と比べて傾斜角を大きくしているのは、中フランジ部背面コーナー１６と外向き突出部１４Ｂ間に流入する風の速度がより低くくなっていることへの対応であって、前述と同様な効果を得るために好ましい。
【００１４】
また、上記本発明のガラリ用羽板においては、上フランジ部と中フランジ部と下フランジ部とが平行に形成されるとともに、その間に形成される内側傾斜面と前記中フランジ部とのなす角度αが１３５°±５°の範囲に、また中フランジ部と下フランジ部との間に形成される外側傾斜面と前記中フランジ部とのなす角度βが１２５°±５°の範囲に形成されてなることがよい（請求項４）。このように内側傾斜面と外側傾斜面との勾配差を１０〜２０°として内側への上り傾斜を大きくすることで、さらに雨水の捕集、飛散防止に効果を発揮できる。
【００１５】
上記の目的を達成するための本発明に係るガラリ（請求項５）は、請求項１乃至４の何れかに記載のガラリ用羽板を組付けたガラリであって、左右の枠の前面にガラリ用羽板の端部を覆うように樋が設けられてなるものである。
【００１６】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。図１は、本発明に係るガラリ用羽板の横断斜視図、図２は、本発明に係るガラリ用羽板をガラリ枠に取付けた状態の縦断面図、図３は、図２のＸ部のＢ矢視拡大図、図４、５は、図２のＸ部のＣ、Ｄ矢視拡大図である。図６は、本発明に係るガラリ用羽板の左右整流体２８Ａ、２８Ｂの斜視図、図７、８、９は、図３、４、５においてガラリ用羽板に吹き込まれた風の流線を示す図である。
【００１７】
図において、１はガラリ用羽板、２はガラリ枠であって、共にアルミニウムの押出加工によって製造されたものであるが、本発明はこれに限定されるものではなく、プラスチックの押出加工等によって製造されたものであってもよい。また、本発明に係るガラリ用羽板の整流体２８は耐候性、かつ難燃性の弾性体から形成され、通常、例えばプラスチック、発泡プラスチック、ゴム又はネオプレンスポンジゴムのいずれかの材料を用いて製造されるのがよいが、これに限定されることはない。
【００１８】
ガラリ用羽板１は、本例では傾斜面３が横断面において中フランジ部７外側にある段状の凹部４Ｂ１、４Ｂ２によって内側傾斜面３Ａと外側傾斜面３Ｂ１、３Ｂ２（ガラリに構成したとき屋外側を外としている）とに形成され、内側傾斜面３Ａの上部５に、上端にかつ内側に延在するＬ字型部５Ａ、５Ｂを備えた上フランジ部６を有し、また外側傾斜面３Ｂ２の上部に中フランジ部７を有し、また外側傾斜面３Ｂ１の下部に下フランジ部８を有する。また、内側傾斜面３Ａの下部には、前記凹部４Ｂ１を覆うようにして外向きの突出部１２Ａ、１２Ｂが二段に形成され、また内側傾斜面３Ａの上部にあって上フランジ部６の外側に段状の凹部４Ａ１、４Ａ２と前記凹部４Ａ１を覆うようにして外向きの突出部１４Ａ、１４Ｂが二段に形成され、また中フランジ部７において段状の凹部４Ｂ２の段板側背面コーナー部１６に切欠部１７が形成され、また上フランジ部６において段状の凹部４Ａ２の段板側背面コーナー部１９に切欠部２０が形成されている。また、前記下フランジ部８が外側に下向きやや内側に垂れる勾配面２１に形成され、かつ下部に外向き、下向き及び内向きの突出部２２、２３、２４が形成されている。
【００１９】
本発明に係るガラリ用羽板の整流体２８は、多面体で、その形状は図６に示すように概略一つの切断された端面を有する角型の紡錘形を呈し、外側傾斜面３Ｂ１、３Ｂ２上で、かつガラリ用羽板の両端部に載置され、かつ、一部が段状の凹部４Ｂ１に挿着されている。ガラリ用羽板に吹き込まれる風等の整流に用いられる面は、面２８（ａ）、（ｂ）、（ｃ）、（ｄ）である。図３，４，５に示すように、面２８（ａ）は、ガラリ用羽板の外側に対して垂直面を成し、面２８（ｄ）は、外側傾斜面３Ｂ１の傾斜にほぼ平行な面を成し、その面２８（ａ）と面２８（ｄ）とは羽板１の下フランジ部８と共に羽板の端部で、外側傾斜面３Ｂ１から外向き突出部１２Ｂまでの間を塞ぎ、風が直接内側傾斜面へ流入するのを阻止する。面２８（ｂ）は、外側傾斜面３Ｂ１、３Ｂ２に沿うて下方、かつ内側に狭くなるとともに、ガラリ用羽板の外側に向かって狭くなる傾斜面を成す。この傾斜面は、垂直面に対しては負の２０〜４０°の角度をなし、かつ、風の入る軸方向に対し２０〜４０°の角度の外向きに拡がりからなる合成の平面である。面２８（ｃ）は、ガラリ用羽板の外側に向かって拡くなる傾斜面を形成している。この傾斜面は略垂直に近い面で、風の入る軸方向に対し、４０〜６０°の角度で以って中間部へ拡がる面である。また、面２８（ｂ）と面２８（ｃ）とに相対する反対側の面は垂直面であって、羽板端部のガラリ枠に対し沿うように垂直かつ平行な面を有し、また整流体の底面は外側傾斜面３Ｂ１，３Ｂ２に沿う面と凹部４Ｂ１の下面に沿う延長面からなり、また面２８（ｄ）の延長面は外向き突出部１２Ａ，１２Ｂの背面に沿う面であって、これら三面により整流体２８はガラリ用羽板１に挿着され、そして外側の垂直面である面２８（ａ）は下フランジ部８の内向きの突出部２４に当接しているので、整流体２８は弾性体でもあるから確実に羽板１に装着される。ガラリ用羽板１は１モジュール（基本構成要素）の巾が１５ｃｍから１ｍの範囲から成るもので、羽板１の両端部に装着される一組の整流体２８Ａ、２８Ｂは相互に面対称となる多面体である。この整流体２８は耐候性、かつ難燃性の弾性体で形成されるのがよいから、発泡プラスチックを旋削して製造してもよいし、型にプラスチックを注入後、発泡させて製作してもよい。また、プラスチックの代わりにゴムを用いるのもよい。
【００２０】
また、上記ガラリ用羽板においては、図２に示すように、外向き突出部１２Ａの傾斜角γが前記突出部１２Ａと下フランジ部に形成される下向き突出部２３とを結んだ線に対し下向きに角度１．４±０．２°の範囲をなし、また、外向き突出部１４Ａの傾斜角δが前記突出部１４Ａと中フランジ部に形成される背面コーナー部１６とを結んだ線に対し下向きに角度３．２±０．２°の範囲をなすように形成されてあってもよい。外向き突出部１２Ａの傾斜角γを前述のようにすることで、推測ではあるが、羽板間に入る風（イ）から内側傾斜面の方へ流入する分流分（ヘ）を少なくし、残り分（ロ）が段状の凹部４Ｂ１、４Ｂ２で反転して、入ってくる風（イ）と衝突、干渉し合った後、整流体により樋方向へ合流の風（ホ）が誘導されて、結果的に系外に出ることになるから好ましい。また、外向き突出部１４Ａの傾斜角δを外向き突出部１２Ａの傾斜角γの場合と比べて傾斜角を大きくしているのは、中フランジ部背面コーナー１６と外向き突出部１４Ｂ間に流入する風の速度がより低くくなっていることへの対応であって、前述と同様な効果を得るために好ましい。
【００２１】
また、上記外側傾斜面３Ｂ２と中フランジ部６とのなす角度βは、図２に示すように、本例では１２５度に形成され、中フランジ部６と内側傾斜面３Ａとのなす角度αは１３５度に形成されている。こうすることにより外側傾斜面３Ｂ２に入った風は外向きの突出部１２Ｂによって偏流させられて内側傾斜面３Ａに向かい、さらに外向きの突出部１４Ｂにより偏流させられてＬ字型部５を通過するが、内側傾斜面３Ａの方が外側傾斜面３Ｂ２より勾配が１０〜２０°大きいので、この面に雨滴が衝突する機会が多くなり捕集の効果があがると推定できる。なお、本発明としては、この角度αは１３０度〜１４０度の範囲で、角度βは１２０度〜１３０度の範囲で形成されることが好ましい。このように角度α、βを形成することで、上下ガラリ用羽板１，１間の取付けピッチＰに対する上下ガラリ用羽板１，１間の最小隙間Ｌを大きく確保して雨の流入を防止したガラリとすることができる。
【００２２】
上記構成のガラリ用羽板１は、図２に示すように、その複数枚を中フランジ部７がガラリ面（上下左右のガラリ枠２によって囲われた面）と平行になるように、かつ上下方向に所定ピッチＰで横に並べガラリ枠２内に取付けることでガラリに製作される。なお、図２において、符号２５，２６，２７はガラリ用羽板１をガラリの左右枠２に取り付けるための孔である。
【００２３】
上記構成のガラリ用羽板１では、雨風が強い時の風の流れは図７に示す流れになると推測される。すなわち、風は上下のガラリ用羽板１と１の間の空間を通過し内部（室内又はダクト内）に流入する。整流体２８は多面体であって、それを構成する面２８（ｃ）は、段状の凹部４Ｂ１と外向きに形成した突出部１２Ａ、１２Ｂとに囲まれる空間部において羽板に入ってくる風（イ）と反転した風（ロ）が衝突して干渉し合って該風（ハ）が端部方向へ流れるのを中間部方向、かつ外側へ誘導する役目を担い、また、面２８（ｂ）は、前述の面２８（ｃ）により誘導された風（ニ）と羽板に入ってくる風（イ）と衝突して干渉し合った合流の風（ホ）の大部分を該面２８（ｂ）の外向けに拡がり、かつ、下向けに拡がる面に沿わせて羽板の端部方向、かつ、外側傾斜面３Ｂ１に向かう下向きの角度を以って羽板の樋３３方向へ誘導する。これにより外側傾斜面３Ｂ１、３Ｂ２から内側傾斜面３Ａへと流入する風（ヘ）の量を抑制する。また、面２８（ａ）と面２８（ｄ）は、外側傾斜面の端部において面２８（ａ）が上の羽板の下フランジ８の内向き突起部２４と当接して羽板の端部を塞ぎ、風が羽板の端部に流入することを阻止する。前述のように、整流体２８は、ガラリ用羽板間の端部に入ってくる風を阻止すると共に、中間部に入ってくる風（イ）と凹部と外向き突出部で形成した空間部で反転した風（ロ）とが衝突し干渉し合わせて生じた風圧の上昇で端部方向へ流れる合流の風（ハ）を一端中間部方向へ向かわせて入ってくる風（イ）と再び干渉させてから樋の端部方向へ、かつ、下向きに風の方向を変え、外側傾斜面に沿って樋３３方向へ該風（ホ）を誘導する。これにより入ってくる風の外側傾斜面から外向きの突出部の上を内側傾斜面に向かって流入する風（ヘ）の量、つまり、風速を抑制することができる。この風には雨滴が随伴しているから必然的に内部へ流入する雨滴の量も低減する。
【００２４】
一方、主としてガラリ面の正面から吹き込む風に随伴してくる雨は、上下のガラリ用羽板１と１の間を通過した後、下側のガラリ用羽板１の外側傾斜面３Ｂ１、３Ｂ２の上面に当たり、一部が上方に流れ込んでも段状の凹部４Ｂ１を覆う外向きの突出部１２Ａ、１２Ｂに遮られ凹部４Ｂ１，４Ｂ２内に溜まる一方で、溜まった一部が外側傾斜面３Ｂ１、３Ｂ２の上面を流下する。また雨の一部が風に煽られて舞い上がってもその流れは内側傾斜面３Ａの上部の上フランジ部６にある段状の凹部４Ａ１を覆う外向きの突出部１４Ａ，１４Ｂに遮られ凹部４Ａ１、４Ａ２内に溜まり、溜まった一部が内側傾斜面３Ａの上面を流下する。また外側傾斜面３Ｂ２の背面及び内側傾斜面３Ａの背面に沿う流れは台形状の切欠部１７，２０に遮られて雨滴が付着し、溜まった一部は背面コーナー部１６，１９から下の傾斜面３に落下して系外に出る。一方、外向きの突出部１４Ａ，１４Ｂによって遮られなかった雨滴はＬ字型部５Ａに遮られて付着して流下しＬ字型部５Ｂから内側傾斜面３Ａへと流出する。
【００２５】
次に、本発明の別の実施形態を図面に基いて説明する。図１２は、本発明に係るガラリの一部を拡大して示す斜視図である。
【００２６】
ガラリ３０は、上記実施形態に示す端部に整流体２８が装着されたガラリ用羽板１を用いたガラリ３１を基本構造としたものであって、その左右のガラリ枠２（図１２では一方のガラリ枠２のみ示す）の前面にガラリ用羽板１の端部３２を覆うように樋３３が設けられて構成されている。
【００２７】
本発明者が、上記したガラリ面に散水しながら吸引風量を段階的に変えた実験をしている過程でガラリ用羽板１の表面の水の流れを観察していたところ、吸引だけの場合には、水はガラリ用羽板１の表面を概ね上から下に向かって流れ落ちるが、外から風を吹きつけた場合、その流れは風向きによって左右両方向あるいは左右の何れか一方の方向に吹き寄せられ大きな流れとなること、さらに、ガラリ用羽板１の巾方向の風の流速分布が中間部より端部の方がより大きいことで、この水の流れが風で吹き上がって内部に吹き込まれていくことが予想される。そこで、本発明に係るガラリ３０では、左右のガラリ枠２の前面にガラリ用羽板１の端部３２を覆うように樋３３を設けたもので、一つには整流体２８によってガラリ用羽板１から反転して合流した風（ホ）が樋３３を経て系外にでること、またもう一つは風によってガラリ用羽板１の端部３２に吹き寄せられた雨水は樋３３内を風の影響を殆ど受けることなく流れ落ちるので、ガラリ用羽板１の形状と相まって、雨風が相当に強い時でも雨が屋内やダクト内に吹込まれるのを、より効果的に防止することができる。
【００２８】
【実施例】
本発明に係るガラリ用羽板に装着された整流体の作用効果を把握するために、図１０（ａ）に示すガラリ用羽板の前段部Ａ、すなわち、上下ニ段の羽板の下フランジ部８と下段の羽板である外側傾斜面３Ｂ１，３Ｂ２と凹部４Ｂ１，４Ｂ２及び凹部を取り囲む外向き突出部１２Ａ、１２Ｂとから構成されているものを図１０（ｂ）に示すガラリ用羽板の通過風速測定装置４０を用いて実施した。通過風速測定装置４０の前方離れた所のターボブロア４６によって、上下、左右ともほぼ一様な速度分布を持つ風速３０ｍ／ｓの風が、ガラリ用羽板の前段部４１に吹き付けられる。図１１は、ガラリ用羽板の通過風速測定装置４０を示し、内側傾斜面に向かうと想定される通過風の通路には、中間部と端部との位置に風受板４２が設けられて、風速に応じて上下に動く腕木４３と蝶番４４からなる機構を有し、風速に応じて上昇する風受板４２の位置を目盛板４５から読み取り、その値から風速レベルを把握することができるようになっている。
【００２９】
本発明に係る整流体が装着されたガラリ用羽板の前段部４１（ａ）の場合と、従来の前段部４１（ｂ）の場合とを本通過風速測定装置を用いて比較を行った。この装着されたガラリ用羽板の諸元は、全巾２００ｍｍ、奥行き１００ｍｍ（内、前段部は４０ｍｍ）、羽板ピッチＰ３８ｍｍ、羽板間前段部のスリット約１３．５ｍｍ（３８ｍｍ×３５．６％）と成っている。その測定結果を表１に示す。
【００３０】
【表１】

【００３１】
この結果によると、整流体をガラリ用羽板の端部に装着すると、装着しない場合に比べて、風受板の目盛の値は、端部で６０から１９へ、中間部で３６から４へと低減している。よって、本発明に係るガラリ用羽板は、前段の外側傾斜面から後段の内側傾斜面へと通過する風速、ひいては風量を従来と比較して、中間部に於いては著しく、端部に於いても大幅に減少させる効果があることが判った。従って、本発明に係るガラリ用羽板を設けると、風速３０ｍ／ｓの強風の場合でもガラリ用羽板を通過する風を抑制することができ、ひいては、風に随伴して侵入してくる雨滴も防止でき、ガラリとして必要な僅かな風だけを通過させることが判った。
【００３２】
【発明の効果】
以上説明したように、本発明に係るガラリ用羽板（請求項１乃至４）によれば、これをガラリに構成したとき、平常時の通気性はもとより、雨風が相当に強い時であっても通気性を損なうことなく雨水の侵入を防ぐことができる。
【００３３】
また、本発明に係るガラリ（請求項５）によれば、請求項１乃至４に記載のガラリ用羽板と相まって雨風が相当に強い時でも雨が屋内やダクト内に吹込まれるのを、より効果的に防止することができる。
【図面の簡単な説明】
【図１】本発明に係るガラリ用羽板の横断斜視図である。
【図２】本発明に係るガラリ用羽板をガラリ枠に取り付けた状態の縦断面図である。
【図３】図２のＸ部のＢ矢視図である。
【図４】図３のＣ矢視図である。
【図５】図３のＤ矢視図である。
【図６】本発明に係るガラリ用羽板の左右整流体の斜視図である。
【図７】図３において吹き込まれた風の流線を示す図である。
【図８】図４において吹き込まれた風の流線を示す図である。
【図９】図５において吹き込まれた風の流線を示す図である。
【図１０】本発明に係るガラリ用羽板を通過する風速測定装置である。
【図１１】本発明に係るガラリ用羽板（ａ）及び従来例（ｂ）の通過風速の測定状況を示す図である。
【図１２】本発明に係るガラリを一部拡大して示す斜視図である。
【図１３】従来のガラリ用羽板の説明図である。
【符号の説明】
１：ガラリ用羽板２：ガラリ枠３：傾斜面
３Ａ：内側傾斜面３Ｂ１，３Ｂ２：外側傾斜面
４Ａ：内側段状の凹部４Ｂ１，４Ｂ２：外側段状の凹部
５Ａ：Ｌ字型直立部５Ｂ：Ｌ字型水平部
６：上フランジ部７：中フランジ部８：下フランジ部
９：内側傾斜面上部１０：内側傾斜面下部
１１：突出部１２Ａ，１２Ｂ：突出部１３：突出部
１４Ａ，１４Ｂ：突出部１５：段板１６：背面コーナー部
１７：台形状切欠部１８：段板１９：背面コーナー部
２０：台形状切欠部２１：勾配面２２、２３、２４：突出部
２５、２６，２７：取付孔２８Ａ，２８Ｂ：整流体
３０，３１：ガラリ３２：ガラリ用羽板の端部３３：樋
４０：ガラリ用羽板の通過風速測定装置４１：ガラリ用羽板の前段部
４２：風受板４３：腕木４４：蝶番
４５：目盛り４６：ブロア
α：内側傾斜面と中フランジ部とのなす角度
β：外側傾斜面と中フランジ部とのなす角度
γ：外向き突出部１２Ｂの下フランジ部下向き突出部に対する傾斜角
δ：外向き突出部１４Ｂの中フランジ部背面コーナー部に対する傾斜角
Ｌ：上下ガラリ用羽板間の最小隙間
Ｐ：ガラリ用羽板の取付けピッチ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a louver blade, and more particularly, to a shape of the louver blade used in a louver which is formed by mounting a number of louvers in a frame side by side at equal intervals.
[0002]
[Prior art]
Gulls are attached to openings such as walls or ducts to ventilate and ventilate the building. The basic form of this gull is configured by arranging a large number of small-width thin blades arranged side by side in a frame, and the blades are provided at equal intervals mainly for the purpose of ventilation. In order to prevent rainwater from entering the room or inside the duct, it is attached with a slope so that the inside is high.
[0003]
Further, in order to further prevent rainwater from entering the room or inside the duct, there is a type using a blade having a sectional shape as shown in FIG. This slat has an inclined surface 103 that rises from the outside to the inside, and an upper end 105 of the inclined surface has an inclined portion 106 inclined at the upper end in the same direction as the inclined surface 103 and extending inward. And a lower flange portion 109 at a lower portion 108 of the inclined surface 103. The inclined surface 103 is inclined inward by a stepped recess 104 in a cross section. Outwardly projecting

portions

111 and 112 are formed on the lower surface 110A of the inner inclined surface 103A so as to cover the concave portion 104, and are formed on the surface 103A and the outer inclined surface 103B. A trapezoidal cutout 115 is formed in the rear corner 114 on the plate 113 side, and the lower flange 109 is formed in a lower narrow cross-sectional shape having a slope 116 on the outside. It is, and the projecting portions 117 outward is formed at the bottom. (See Patent Document 1)
[0004]
In the rag, the wind enters from the outside in a locus as shown by the solid arrow, so that even when rain (shown by the dotted arrow) blows in with the wind, the inclined surface covers the step-shaped recess and the recess in the cross section. As a result, the space formed by the step-shaped concave portion and the outwardly formed protrusion serves as a buffer space, which weakens wind power, and the rainwater, etc. It collides with the inner wall and stays, so that intrusion into the back is greatly suppressed. And furthermore, since the trapezoidal notch is formed at the step side concave corner of the stepped concave portion, the flow of wind along the back of the outer inclined surface of the upper blade through the space is buffered, Rainwater adhering to the back of the inner slope and flowing down becomes relatively large water drops from the tip of the back corner on the step board side, so it is difficult for the water drops to be scattered by the wind and falls to the lower blade surface and outwards , It is possible to suppress scattering and intrusion into the inside of the gull. In addition, since the lower flange portion has a downwardly tapered cross-sectional shape having a slope surface on the outside and an outwardly projecting portion is formed at a lower portion, the flow of wind along the slope surface going upward from below is weakened, and It is difficult for the rainwater to scatter in all directions, collects water in the dents and becomes relatively large water droplets and falls from the tip of the outward projection, making it difficult for the water droplets to be scattered by the wind and reducing the scattering and intrusion between the blades .
[0005]
The applicant of the present application is effective in the case where the gutter of Patent Document 1 blows rain to the gutter from near the front, but it is effective for rain from above and diagonally above, especially when wind and rain are strong. It was found that there was room for improvement, so even when the direction of the rain spray was wide, from horizontal, upward or diagonally upward when the rainy wind was strong, the rainwater could be further impaired without impairing the ventilation. We have proposed a gull slat and gull that can prevent intrusion. (Japanese Patent Application No. 2001-398234)
[0006]
[Patent Document 1]
JP-A-2002-168063 (pages 3 to 5, FIG. 3)
[0007]
[Problems to be solved by the invention]
Up to now, the applicant has devised the shape of the wings of the gullging slats to suppress the wind speed passing through the gullging wings and efficiently catch the accompanying rain, mainly against strong winds accompanied by the rain. Investigations and studies have been carried out so that they can be collected and discharged outside the system, and they have produced reasonable results. However, in the subsequent investigation and research, even when the strong wind is blown even with the above-mentioned proposed louvering slat, a large difference occurs in the amount of air passing through the louvering louver in the width direction of the louvering louver. It has been found. In other words, as the wind blown to the louver blades increases at a wind speed of 20 m / s or more, the suppression of the amount of air passing by the louver blades, that is, the degree to which the wind speed is suppressed, is more intermediate between the end in the width direction of the louver blades and the middle. In particular, when the wind speed was about 35 m / s, there was a large difference in the suppression effect in the width direction, and the suppression effect originally desired was not obtained as a whole. Therefore, the present invention provides a louvering slat that can prevent the intrusion of accompanying rain by eliminating the difference in the amount of passing air between the width direction of the louvering slats, that is, the end and the middle, and reducing the wind speed. And gulls.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a rattling vane according to the present invention, which has an inclined surface 3 that rises from the outside to the inside, as shown in FIG. At the upper part, it has an upper flange part 6 provided with an L-shaped part extending at the upper end and inward, and has a middle flange part 7 and a lower flange part 8 at the middle part and the lower part of the inclined surface, respectively. The inclined surface is formed on the inner inclined surface 3A and the outer inclined surfaces 3B1 and 3B2 by step-shaped concave portions 4B1 and 4B2 located outside the middle flange portion in the cross section, and the concave portion is covered below the inner inclined surface. Outwardly protruding

portions

12A and 12B are formed, and stepped concave portions 4A1 and 4A2 are formed outside the upper flange portion on the inner inclined surface, and outwardly protruding

portions

14A and 14B are formed so as to cover the concave portions. Formed and also middle flange part and upper flan In addition to the

trapezoidal notches

17 and 20 formed in the stepped

concave corners

16 and 19 of the stepped concave portion in the portion, a sloped surface 21 on which the lower flange portion hangs downward and slightly inward is formed. A gull wing plate 1 formed and formed with outwardly, downwardly and inwardly protruding

portions

22, 23, and 24 formed at a lower portion thereof. A surface 28 (d) forms a surface substantially parallel to the inclination of the outer inclined surface 3B1, and a surface 28 (b) narrows downward and inward along the outer inclined surfaces 3B1, 3B2. The rectifier 28, which forms an inclined surface that becomes narrower toward the outside of the gullging louver, and the surface 28 (c) forms an inclined surface that becomes narrower toward the inner side of the gullifying louver, It is placed on both ends.
[0009]
In the above configuration, the inclined surface is formed on the inner inclined surface and the outer inclined surface by the step-shaped concave portion in the cross section, and an outwardly projecting portion is formed below the inner inclined surface so as to cover the concave portion. Therefore, it is speculated that the wind flow along the outer inclined surface is caused by the wind and the recess entering the space due to the step-shaped recess and the projection formed outward so as to cover the recess. In addition to interfering with the reversed wind, the wind is weakened, and the rainwater splashed collides with the inner wall of the space, that is, the recessed portion due to inertia and stays there. In addition, since a stepped concave portion and an outwardly projecting portion are formed to cover the concave portion outside the upper flange portion on the upper side of the inner inclined surface, the wind is weakened as described above and the wind along the inner inclined surface is reduced. In the flow, the wind is further weakened by the concave portion and the protruding portion, and the penetration of rainwater into the back is further suppressed, so that the effect is increased. However, without the rectifier 28, the higher the flow velocity of the wind blown between the louvering blades, the higher the pressure that occurs because the wind entering the space and the wind reversed in the recess collide and interfere with each other. It is believed that the velocity of the wind flowing downstream toward the inner slope is faster at the end than at the middle because a rise occurs and this pressure rise escapes to the widthwise end.
[0010]
The rectifier 28 mounted on the gullging wing plate according to the present invention is for solving the above-mentioned problem, and is placed on the end of the gulling wing plate. Specifically, the straightening body 28 is partially inserted into the stepped concave portion 4B1 on the outer inclined surfaces 3B1 and 3B2 at both ends of the wing plate 1, and the inwardly projecting portion 24 of the lower flange portion 8 is formed. It is attached in contact with. As shown in FIGS. 6, 7, 8, and 9, the rectifying body 28 is a polyhedron, and the function of the rectifying body includes estimation, but the surface 28 (c) that constitutes the rectifying body 28 has a stepped recess 4B1 and an outer surface. In the space surrounded by the

protruding portions

12A and 12B formed in the directions, the wind (a) entering the slat 1 and the inverted wind (b) collide and interfere with each other, so that the wind (c) ends. The surface 28 (b) has a role of guiding the air flowing in the direction toward the middle and outward, and the surface 28 (b) and the wind (d) guided by the surface 28 (c) described above and the wind entering the slats. Most of the combined wind (e) that collided and interfered with (a) spreads outward from the surface 28 (b), and extends along the surface that spreads downward, toward the end of the blade. In addition, the blades are guided toward the gutter 33 of the slat with a downward angle toward the outer inclined surface. This suppresses the amount of wind (f) flowing from the outer inclined surface to the inner inclined surface. Further, the surface 28 (a) and the surface 28 (d) are formed such that the surface 28 (a) is in contact with the inwardly protruding portion 24 of the lower flange 8 of the upper wing plate at the end of the outer inclined surface, and Block the wind and prevent wind from flowing into the end of the slat.
[0011]
As described above, the rectifying body 28 prevents the wind from entering the end portion between the rattle blades, and the wind (a) entering the intermediate portion, and the space formed by the concave portion and the outwardly projecting portion. The reversing wind (b) collides with and interferes with each other. The rise in wind pressure caused by the interference causes the confluent wind (c) flowing in the end direction to flow toward the middle part once and the incoming wind (b) again. After the interference, the direction of the wind is changed toward the end with the gutter and downward, and the wind (e) is guided to the gutter along the outer inclined surface. Accordingly, it is possible to suppress the amount of the wind (F) flowing from the outer inclined surface toward the inner inclined surface from the outer inclined surface toward the inner inclined surface, that is, the wind speed. Since this wind is accompanied by raindrops, the amount of raindrops flowing into the interior is inevitably reduced.
[0012]
In the above-mentioned louver blade of the present invention, the rectifier may be made of a weather-resistant and flame-retardant elastic body. (Claim 2). The straightening body 28 is partially inserted into the space surrounded by the concave portion and the outwardly projecting portion, that is, inserted into the concave portion 4B1, and the front surface 28 (a) is formed by the inward projection of the inclined surface 21 of the lower flange portion. An elastic body made of plastic or foamed plastic is preferable because it is mounted in contact with the part 24, and furthermore, a weather-resistant material in terms of being exposed to external light, the outside air and the wind and rain, and also a point of view of fire resistance of the garriage. Flame retardant materials are preferred.
[0013]
Further, in the above-described louvering slat of the present invention, the inclination angle γ of the outwardly protruding portion 12A is an angle 1 downward with respect to the line connecting the protruding portion 12A and the downwardly protruding portion 23 formed on the lower flange portion. .4 ± 0.2 °, and the inclination angle δ of the outwardly projecting portion 14A is a downward angle with respect to a line connecting the projecting portion 14A and the rear corner portion 16 formed in the middle flange portion. It may be formed to form a range of 3.2 ± 0.2 ° (claim 3). By making the inclination angle γ of the outward projecting portion 12A as described above, it is guessed that the amount of shunt flowing from the wind entering between the blades to the inner inclined surface is reduced, and the remaining portion is stepped. After being reversed in the recesses 4B1 and 4B2 and colliding with and interfering with the incoming wind, the rectifier guides the combined wind to the end in the direction of the gutter 33 and consequently goes out of the system. Is preferred. The reason why the inclination angle δ of the outwardly projecting portion 14A is set to be larger than that of the case where the inclination angle γ of the outwardly projecting portion 12A is increased is that between the middle flange rear corner 16 and the outwardly projecting portion 14B. This corresponds to the fact that the speed of the inflowing wind is lower, and is preferable for obtaining the same effect as described above.
[0014]
Further, in the above-mentioned louvering slat of the present invention, the upper flange portion, the middle flange portion, and the lower flange portion are formed in parallel with each other, and the angle formed between the inner inclined surface formed therebetween and the middle flange portion. α is in the range of 135 ° ± 5 °, and the angle β between the outer inclined surface formed between the middle flange portion and the lower flange portion and the middle flange portion is formed in the range of 125 ° ± 5 °. (Claim 4). In this way, by making the gradient difference between the inner inclined surface and the outer inclined surface 10 to 20 ° and increasing the inward inclining angle, it is possible to further exhibit the effect of collecting rainwater and preventing scattering.
[0015]
According to another aspect of the present invention, there is provided a gull for mounting the gull wing plate according to any one of claims 1 to 4, wherein the gull is attached to a front surface of left and right frames. A gutter is provided so as to cover the end of the gullging blade.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional perspective view of the louver blade according to the present invention, FIG. 2 is a longitudinal cross-sectional view of a state where the louver blade according to the present invention is mounted on a louver frame, and FIG. 4 and 5 are enlarged views of the X part of FIG. FIG. 6 is a perspective view of the left and

right rectifiers

28A and 28B of the louver blade according to the present invention, and FIGS. 7, 8, and 9 are streamlines of wind blown into the louver blades in FIGS. FIG.
[0017]
In the figure, reference numeral 1 denotes a louver blade and 2 denotes a louver frame, both of which are manufactured by extrusion of aluminum. However, the present invention is not limited to this. It may be manufactured. In addition, the straightening body 28 of the louver blade according to the present invention is formed of a weather-resistant and flame-retardant elastic body, and is usually made of any material such as plastic, foamed plastic, rubber or neoprene sponge rubber. It is preferably manufactured, but is not limited to this.
[0018]
In this example, the louvering slat 1 has an inner inclined surface 3A and outer inclined surfaces 3B1, 3B2 (steps 4a and 4b2) formed by stepped concave portions 4B1 and 4B2 in which the inclined surface 3 is located outside the middle flange portion 7 in cross section. An upper flange portion 6 having an L-shaped portion 5A, 5B extending at an upper end and inward at an upper portion 5 of the inner inclined surface 3A. 3B2 has a middle flange portion 7 at the upper portion, and a lower flange portion 8 at a lower portion of the outer inclined surface 3B1. Further, outwardly protruding

portions

12A and 12B are formed in a lower portion of the inner inclined surface 3A so as to cover the concave portion 4B1. Stepped recesses 4A1 and 4A2 and two outwardly projecting

portions

14A and 14B are formed so as to cover the recessed portion 4A1, and the middle flange portion 7 has a stepped plate side back corner of the stepped recessed portion 4B2. A notch 17 is formed at 16, and a notch 20 is formed at the upper flange 6 at the step board side back corner 19 of the stepped recess 4A2. Further, the lower flange portion 8 is formed on a slope 21 downwardly and downwardly and slightly inwardly, and outwardly, downwardly and inwardly protruding

portions

22, 23 and 24 are formed on a lower portion.
[0019]
The straightening body 28 of the louvering blade according to the present invention is a polyhedron, and its shape is a square spindle shape having substantially one cut end face as shown in FIG. 6, and is formed on the outer inclined surfaces 3B1, 3B2. It is placed on both ends of the louvering slat, and a part is inserted into the stepped recess 4B1. Surfaces used for rectification of wind and the like blown into the gullging blades are surfaces 28 (a), (b), (c), and (d). As shown in FIGS. 3, 4, and 5, the surface 28 (a) forms a vertical surface with respect to the outside of the rattling vane, and the surface 28 (d) is substantially parallel to the inclination of the outer inclined surface 3B1. The surface 28 (a) and the surface 28 (d) together with the lower flange 8 of the slat 1 are ends of the slat, and block the space between the outer inclined surface 3B1 and the outwardly protruding portion 12B. To prevent wind from flowing directly into the inner slope. The surface 28 (b) forms an inclined surface that becomes narrower downward and inward along the outer inclined surfaces 3B1 and 3B2, and that becomes narrower toward the outer side of the rattle vane. The inclined plane is a composite plane that forms a negative angle of 20 to 40 degrees with respect to the vertical plane and extends outward at an angle of 20 to 40 degrees with respect to the axial direction through which the wind enters. The surface 28 (c) forms an inclined surface that expands toward the outside of the louver blade. This inclined surface is a surface that is almost vertical and that extends to the intermediate portion at an angle of 40 to 60 degrees with respect to the axial direction through which the wind enters. In addition, the surface on the opposite side to the surface 28 (b) and the surface 28 (c) is a vertical surface, and has a surface which is perpendicular and parallel to the rattle frame at the end of the slat, and The bottom surface of the rectifying body is composed of a surface along the outer inclined surfaces 3B1 and 3B2 and an extension surface along the lower surface of the concave portion 4B1, and the extension surface of the surface 28 (d) is a surface along the rear surfaces of the outwardly projecting

portions

12A and 12B. The straightening body 28 is inserted into the rattle slat 1 by these three surfaces, and the outer vertical surface 28 (a) is in contact with the inwardly protruding portion 24 of the lower flange portion 8. Since the rectifier 28 is also an elastic body, it is securely mounted on the slat 1. The louver board 1 has a module (basic component) having a width of 15 cm to 1 m, and a pair of

rectifiers

28A and 28B mounted on both ends of the wing board 1 have plane symmetry with each other. Is a polyhedron. Since the current regulator 28 is preferably made of a weather-resistant and flame-retardant elastic body, it may be manufactured by turning a foamed plastic, or by injecting the plastic into a mold and then foaming it. Is also good. Further, rubber may be used instead of plastic.
[0020]
Further, in the above-mentioned gullging feather plate, as shown in FIG. 2, the inclination angle γ of the outwardly protruding portion 12 A is different from the line connecting the protruding portion 12 A and the downwardly protruding portion 23 formed on the lower flange portion. A downward angle of 1.4 ± 0.2 ° is formed, and the inclination angle δ of the outwardly projecting portion 14A is a line connecting the projecting portion 14A and the rear corner portion 16 formed on the middle flange portion. On the other hand, it may be formed so as to form an angle of 3.2 ± 0.2 ° downward. By making the inclination angle γ of the outward projecting portion 12A as described above, it is guessed that the amount of diverted flow (f) flowing from the wind (a) entering between the blades toward the inner inclined surface is reduced, The remaining portion (b) is inverted by the stepped recesses 4B1 and 4B2, collides with the incoming wind (a), and interferes with each other. Then, the rectifier guides the confluent wind (e) toward the gutter. This is preferable because the resultant substance comes out of the system. The reason why the inclination angle δ of the outwardly projecting portion 14A is set to be larger than that of the case where the inclination angle γ of the outwardly projecting portion 12A is increased is that between the middle flange rear corner 16 and the outwardly projecting portion 14B. This corresponds to the fact that the speed of the inflowing wind is lower, and is preferable for obtaining the same effect as described above.
[0021]
As shown in FIG. 2, the angle β between the outer inclined surface 3B2 and the middle flange 6 is formed at 125 degrees in this example, and the angle α between the middle flange 6 and the inner inclined surface 3A is It is formed at 135 degrees. In this way, the wind entering the outer inclined surface 3B2 is deflected by the outwardly protruding portion 12B to the inner inclined surface 3A, and further deflected by the outwardly protruding portion 14B to pass through the L-shaped portion 5. However, since the slope of the inner inclined surface 3A is larger than that of the outer inclined surface 3B2 by 10 to 20 °, it can be estimated that the chance of raindrops colliding with this surface increases and the effect of collection increases. In the present invention, it is preferable that the angle α is formed in a range of 130 to 140 degrees and the angle β is formed in a range of 120 to 130 degrees. By forming the angles α and β in this manner, the minimum gap L between the upper and lower louvering blades 1 and 1 with respect to the mounting pitch P between the upper and lower louvering blades 1 and 1 is ensured to prevent rain inflow. It can be a rag.
[0022]
As shown in FIG. 2, the gullging wing plate 1 having the above-described configuration is configured such that a plurality of the gussets 1 are arranged such that the middle flange portion 7 is parallel to the gullging surface (the surface surrounded by the up, down, left, and right gulling frames 2). By arranging them horizontally at a predetermined pitch P in the direction and mounting them in the lashing frame 2, the lashing is produced. In FIG. 2,

reference numerals

25, 26, and 27 are holes for attaching the louvering slats 1 to the left and right frames 2 of the louver.
[0023]
In the louvering slat 1 having the above configuration, it is assumed that the flow of the wind when the rainy wind is strong is as shown in FIG. That is, the wind passes through the space between the upper and lower louvering blades 1 and 1 and flows into the inside (in the room or in the duct). The rectifying body 28 is a polyhedron, and the surface 28 (c) constituting the rectifying body 28 is a wind that enters the slat in a space surrounded by the step-shaped concave portion 4B1 and the outwardly formed

protruding portions

12A and 12B. (A) and the reverse wind (b) collide and interfere with each other to guide the flow of the wind (c) toward the end toward the middle and outward, and also serve to guide the surface 28 (b). ) Indicates that most of the combined wind (e) that collides with and interferes with the wind (d) guided by the above-described surface 28 (c) and the wind (a) entering the slats. (B) is directed toward the end of the slat along the surface extending outward and downward, and toward the gutter 33 of the slat with a downward angle toward the outer inclined surface 3B1. I do. This suppresses the amount of wind (f) flowing from the outer inclined surfaces 3B1 and 3B2 to the inner inclined surface 3A. Further, the surface 28 (a) and the surface 28 (d) are formed such that the surface 28 (a) is in contact with the inwardly protruding portion 24 of the lower flange 8 of the upper wing plate at the end of the outer inclined surface, and Block the wind and prevent wind from flowing into the end of the slat. As described above, the rectifying body 28 prevents the wind from entering the end portion between the rattle blades, and the wind (a) entering the intermediate portion, and the space formed by the concave portion and the outwardly projecting portion. The reversing wind (b) collides with and interferes with each other. The rise in wind pressure caused by the interference causes the confluent wind (c) flowing in the end direction to flow toward the middle part once and the incoming wind (b) again. After the interference, the direction of the wind is changed toward the end of the gutter and downward, and the wind (e) is guided toward the gutter 33 along the outer inclined surface. Accordingly, it is possible to suppress the amount of the wind (F) flowing from the outer inclined surface toward the inner inclined surface from the outer inclined surface toward the inner inclined surface, that is, the wind speed. Since this wind is accompanied by raindrops, the amount of raindrops flowing into the interior is inevitably reduced.
[0024]
On the other hand, the rain mainly accompanying the wind blown from the front of the rattle surface passes between the upper and lower rattle blades 1 and 1, and then falls on the outer inclined surfaces 3B1 and 3B2 of the lower rattle blade 1. Even if the upper part hits the upper surface and partly flows upward, it is blocked by the outwardly protruding

parts

12A and 12B covering the stepped concave part 4B1 and accumulated in the concave parts 4B1 and 4B2, while the accumulated part is formed on the outer inclined surfaces 3B1 and 3B2. Flow down the top surface. Even if a part of the rain is blown up by the wind, the flow is blocked by the outwardly projecting

portions

14A, 14B covering the stepped concave portion 4A1 in the upper flange portion 6 on the upper side of the inner inclined surface 3A. , 4A2, and a part of the pool flows down the upper surface of the inner inclined surface 3A. In addition, the flow along the back surface of the outer inclined surface 3B2 and the back surface of the inner inclined surface 3A is blocked by the

trapezoidal cutouts

17 and 20, and raindrops are attached. It falls to surface 3 and goes out of the system. On the other hand, the raindrops not blocked by the outwardly projecting

portions

14A and 14B are blocked by the L-shaped portion 5A, adhere to and flow down, and flow out from the L-shaped portion 5B to the inner inclined surface 3A.
[0025]
Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 12 is an enlarged perspective view showing a part of the louver according to the present invention.
[0026]
The louver 30 has a basic structure of the louver 31 using the louver blade 1 having the rectifier 28 attached to the end shown in the above-described embodiment, and the left and right louver frames 2 (one in FIG. 12). A gutter 33 is provided on the front surface of the rattle frame 2 so as to cover the end 32 of the rattle slat 1.
[0027]
The inventor observed the flow of water on the surface of the louvering slat 1 in the process of performing an experiment in which the amount of suction air was changed stepwise while spraying water on the above-mentioned gusset surface. In the meantime, water flows down the surface of the louvering slat 1 generally from the top to the bottom, but when the wind is blown from the outside, the flow is blown in either the left or right direction or the left or right direction depending on the wind direction. Since the flow becomes large and the flow velocity distribution of the wind in the width direction of the louvering blade 1 is larger at the end than at the middle, the flow of the water is blown up by the wind and blown into the inside. It is expected to go. Therefore, in the rattle 30 according to the present invention, the gutter 33 is provided on the front surface of the left and right rattle frames 2 so as to cover the end 32 of the rattle blade 1, and one of them is the rectifier 28. The wind (e) that has been inverted and joined from the plate 1 goes out of the system through the gutter 33, and the other is that the rainwater blown by the wind to the end 32 of the gullage slat 1 causes the wind to flow through the gutter 33. Flows down almost without being affected by the above, and in combination with the shape of the ragged slats 1, it is possible to more effectively prevent rain from being blown into a room or a duct even when rain wind is considerably strong.
[0028]
【Example】
In order to grasp the function and effect of the rectifier mounted on the louver blade according to the present invention, the front flange A of the louver blade shown in FIG. FIG. 10 (b) shows a slicing slat shown in FIG. 10 (b), which is composed of a portion 8 and outer inclined surfaces 3B1, 3B2, which are lower slats, recesses 4B1, 4B2, and outwardly projecting

portions

12A, 12B surrounding the recesses. Was carried out using the passing wind velocity measuring device 40 of the above. By a turbo blower 46 at a location away from the front of the passing wind speed measuring device 40, a wind having a wind speed of 30 m / s having a substantially uniform vertical and horizontal velocity distribution is blown to the front part 41 of the louvering blade. FIG. 11 illustrates a passing wind velocity measuring device 40 for the louver blades, and a wind receiving plate 42 is provided at a position between an intermediate portion and an end portion in a passage of the passing wind assumed to be directed to the inner inclined surface. And a mechanism comprising a brace 43 and a hinge 44 which move up and down according to the wind speed. The position of the wind receiving plate 42 which rises according to the wind speed is read from the scale 45, and the wind speed level can be grasped from the value. It has become.
[0029]
A comparison was made between the case of the front part 41 (a) of the rattling vane on which the rectifier according to the present invention is mounted and the case of the conventional front part 41 (b) using the passing wind velocity measuring device. The specifications of the mounted louvering wings are as follows: total width 200 mm, depth 100 mm (including the front part 40 mm), wing plate pitch P 38 mm, slit about front part between wings about 13.5 mm (38 mm × 35.6). %). Table 1 shows the measurement results.
[0030]
[Table 1]

[0031]
According to this result, when the straightening body is attached to the end of the louvering slat, the scale value of the wind receiving plate is from 60 to 19 at the end and from 36 to 4 at the middle compared to the case where the rectifier is not attached. And has been reduced. Therefore, the louver blade according to the present invention has a remarkably higher wind speed and a larger air volume at the intermediate portion and at the end portion at the end portion, compared with the conventional one, from the front outer inclined surface to the rear inner inclined surface. However, it was found that there was an effect of greatly reducing this. Therefore, when the louver blade according to the present invention is provided, the wind passing through the louver blade can be suppressed even in the case of a strong wind with a wind speed of 30 m / s, and as a result, raindrops that enter along with the wind It was also found that only the slight wind required as a rag was passed.
[0032]
【The invention's effect】
As described above, according to the louver blade according to the present invention (claims 1 to 4), when the louver blade is configured as a louver, not only the air permeability at normal times but also when the wind and rain are considerably strong. Also, it is possible to prevent rainwater from entering without damaging the air permeability.
[0033]
Further, according to the louver according to the present invention (claim 5), it is possible to prevent rain from being blown into a room or a duct even when rainy wind is considerably strong in combination with the louver blades according to claims 1 to 4. It can be more effectively prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional perspective view of a rattling vane according to the present invention.
FIG. 2 is a longitudinal sectional view showing a state in which the gullging blade according to the present invention is attached to a gulling frame.
FIG. 3 is a view as viewed in a direction indicated by an arrow B in an X part of FIG. 2;
FIG. 4 is a view taken in the direction of arrow C in FIG. 3;
FIG. 5 is a view as viewed from an arrow D in FIG. 3;
FIG. 6 is a perspective view of a left and right rectifying body of the louver blade according to the present invention.
FIG. 7 is a diagram showing streamlines of wind blown in FIG. 3;
FIG. 8 is a diagram showing streamlines of wind blown in FIG. 4;
FIG. 9 is a diagram showing streamlines of wind blown in FIG. 5;
FIG. 10 is an apparatus for measuring a wind speed passing through a louver blade according to the present invention.
FIG. 11 is a diagram showing a measurement state of a passing wind speed of the louver blade (a) according to the present invention and the conventional example (b).
FIG. 12 is a perspective view showing a partially enlarged view of the louver according to the present invention.
FIG. 13 is an explanatory view of a conventional rattle vane.
[Explanation of symbols]
1: feather board for rattle 2: rattle frame 3: inclined surface
3A: Inside inclined surface 3B1, 3B2: Outside inclined surface
4A: inner step-shaped recess 4B1, 4B2: outer step-shaped recess
5A: L-shaped upright part 5B: L-shaped horizontal part
6: Upper flange 7: Middle flange 8: Lower flange
9: Upper inside slope 10: Lower inside slope
11:

Projection

12A, 12B: Projection 13: Projection
14A, 14B: Projecting part 15: Step board 16: Back corner
17: trapezoidal cutout 18: step board 19: back corner
20: trapezoidal cutout 21: sloped

surface

22, 23, 24: protrusion
25, 26, 27: Mounting

holes

28A, 28B: Rectifier
30, 31: rattle 32: end of rattle blade 33: gutter
40: Apparatus for measuring the passing wind speed of the gullging wings 41: Front part of the gulling wings
42: wind receiving plate 43: arm tree 44: hinge
45: Scale 46: Blower
α: Angle formed between the inner inclined surface and the middle flange
β: Angle between the outer inclined surface and the middle flange
γ: inclination angle with respect to the downwardly protruding portion of the lower flange portion of the outwardly protruding portion 12B
δ: angle of inclination of the outwardly projecting portion 14B with respect to the middle flange rear corner portion
L: Minimum clearance between upper and lower louvering blades
P: Mounting pitch of the louver blades

Claims

It has an inclined surface 3 that rises from the outside to the inside, has an upper flange portion 6 provided with an L-shaped portion extending at the upper end and inward at an upper portion of the inclined surface, and a middle portion of the inclined surface. And a lower flange portion 8 at the bottom and a lower flange portion, respectively. The inclined surface is formed by stepped recesses 4B1 and 4B2 which are located outside the middle flange portion in the cross section, and the inner inclined surface 3A and the outer inclined surface 3B1, 3B2, outwardly protruding portions 12A and 12B are formed below the inner inclined surface so as to cover the concave portion, and a stepped concave portion 4A1 is formed outside the upper flange portion above the inner inclined surface. 4A2 and the projections 14A and 14B are formed so as to cover the recesses, and trapezoidal cutouts are formed in the middle and upper flanges at the step-side back corners 16 and 19 of the stepped recesses. Parts 17, 20 are formed In addition to the above, a sloped surface 21 is formed in which the lower flange portion hangs downward and slightly inward on the outside, and outward, downward and inward projecting portions 22, 23, and 24 are formed on a lower portion. The gullging louver 1 is a polyhedron, in which the surface 28 (a) forms a vertical surface to the outside of the gulling louver, and the surface 28 (d) is a surface substantially parallel to the inclination of the outer inclined surface 3B1. None, the surface 28 (b) forms an inclined surface that becomes narrower downward and inward along the outer inclined surfaces 3B1 and 3B2, and becomes narrower toward the outside of the rattle vane, and the surface 28 (c) is used for the rattle. A louver blade, wherein the rectifier body 28 having an inclined surface expanding toward the outside of the louver is placed on both ends of the louver blade.

The louver vane according to claim 1, wherein the rectifier is formed of a weather-resistant and flame-retardant elastic body.

The angle of inclination of the outwardly projecting portion 12A is 1.4 ± 0.2 ° downward with respect to a line connecting the projecting portion 12A and the downwardly projecting portion 23 formed on the lower flange portion. The inclination angle of the portion 14A is formed to be 3.2 ± 0.2 ° downward with respect to a line connecting the projecting portion 14A and the rear corner portion 16 formed in the middle flange portion. The louver vane according to claim 1 or 2, wherein

The upper flange portion, the middle flange portion, and the lower flange portion are formed in parallel, and the angle α formed between the inner inclined surface 3A formed therebetween and the middle flange portion 7 is in a range of 135 ° ± 5 °. The angle β between the outer inclined surface 3B2 formed between the middle flange portion and the lower flange portion and the middle flange portion 7 is formed in a range of 125 ° ± 5 °. 4. The gullwing vane according to any one of 1 to 3.

It is a gull attached with the gull wings according to any one of claims 1 to 4, characterized in that gutters are provided on the front surfaces of the left and right frames so as to cover the ends of the gull wings. And the gullari.