JP2004251075A

JP2004251075A - Siphon type rainwater draining device

Info

Publication number: JP2004251075A
Application number: JP2003044928A
Authority: JP
Inventors: Norio Takeuchi; 規雄竹内; Hideji Iwasaki; 秀治岩崎
Original assignee: Takiron Co Ltd
Current assignee: Takiron Co Ltd
Priority date: 2003-02-21
Filing date: 2003-02-21
Publication date: 2004-09-09
Anticipated expiration: 2023-02-21
Also published as: JP4130595B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a siphon type rainwater draining device without increasing a cost and damaging external appearance of a house by efficiently draining a large quantity of rainwater due to siphon action during a heavy rain. <P>SOLUTION: The siphon type rainwater draining device is provided with a siphon pipeline 1a on a bottom part 1e of an eaves gutter 1 over an entire length thereof, and a suction opening communicating with the siphon pipeline 1a from the inside of the eaves gutter 1. The upper end of a vertical siphon pipeline provided in a vertical direction along an outer wall 21 of the house is connected to the siphon pipeline of the eaves gutter 1. When the siphon pipeline 1a of an eaves gutter bottom part and the vertical siphon pipeline are satisfied with rainwater during the heavy rain, rainwater is sucked from the suction opening due to siphon action and flows down the siphon pipelines at a velocity several times of natural drop drainage, and the large quantity of rainwater is efficiently drained. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、大雨のときに雨水を極めて効率良く排水できるサイホン式雨水排水装置に関する。
【０００２】
【従来の技術】
従来の家屋は、軒樋を上合（集水器）に向かって流れ勾配が付くように軒先に取付け、上合に流入した雨水を堅樋を通じて自然落下させることにより排水していた。けれども、軒樋に流れ勾配が付いていると家屋の外観が良くないため、最近の住宅では、流れ勾配を付けないで軒樋を水平に取付ける場合が増えている。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来のように雨水を軒樋で上合に集めて堅樋内部を自然落下させる排水装置は排水効率があまり良くなく、特に、軒樋が水平に取付けられている場合は、上合から遠ざかるほど排水効率が低下して軒樋内部の水位が上昇することになる。そのため、本来必要な容量以上の大きい軒樋を取付けたり、上合と上合の間隔を狭めることが必要になり、コストアップを招くと共に、上合や堅樋の増加で家屋の外観も損なわれるという問題があった。
【０００４】
本発明は上記の問題に対処すべくなされたもので、その目的とするところは、大雨のときにサイホン作用により大量の雨水を極めて効率良く排水でき、コストアップや家屋の外観を損なうこともないサイホン式雨水排水装置を提供することにある。
【０００５】
【課題を解決するための手段】
上記目的を達成するため、本発明に係るサイホン式雨水排水装置は、軒樋の底部にサイホン管路が軒樋全長に亘って設けられると共に、軒樋の内側からサイホン管路に通じる吸水口が設けられ、家屋の外壁材に沿って縦方向に設けられた縦サイホン管路の上端が上記軒樋のサイホン管路に接続されていることを特徴とするものである。
【０００６】
このようなサイホン式雨水排水装置は、小雨のときには、屋根から軒樋に流れ込んだ雨水が軒樋底部の吸水口からサイホン管路に流入し、縦サイホン管路内を自然落下して排水される。そして、大雨のときには、吸水口から軒樋底部のサイホン管路への流入量が増加し、軒樋底部のサイホン管路と縦サイホン管路が雨水で満たされると、サイホン作用によって雨水が吸水口から吸い込まれて自然落下排水の数倍の流速で軒樋底部のサイホン管路と縦サイホン管路を流れ落ち、多量の雨水が極めて効率良く排水される。従って、本発明のサイホン式雨水排水装置は、軒樋として従来より小さいものが使用可能であり、また、縦サイホン管路の接続箇所の間隔を従来の堅樋間隔より広げて縦サイホン管路の接続箇所を少なくすることもできるので、コストアップや家屋の外観を損なう心配がない。
【０００７】
本発明のサイホン式雨水排水装置においては、軒樋底部のサイホン管路や外壁材沿いの縦サイホン管路の開口面積を２〜２０ｃｍ^２とすることが好ましく、かかる開口面積にすると良好なサイホン作用が発揮される。開口面積が２０ｃｍ^２より大きくなると、大雨のときでも軒樋底部のサイホン管路や縦サイホン管路が雨水で満たされ難くなるため、サイホン作用を十分発揮できない恐れが生じる。
これらの管路内をサイホン作用によって流れる雨水の流速は速いので、これらの管路の開口面積がある程度小さくても、ゴミその他の固形物は洗い流されて管路内に詰まることはないが、それでも開口面積が２ｃｍ^２より小さくなるとゴミ等が詰まりやすくなる。
【０００８】
本発明のサイホン式雨水排水装置においては、吸水口にゴミ除けカバーを取付けることが好ましく、このようにすると、軒樋底部のサイホン管路や縦サイホン管路のゴミ詰まりをより確実に防止することができる。
【０００９】
本発明のサイホン式雨水排水装置においては、軒樋の底部に複数のサイホン管路を並列に設けると共に、軒樋を全長に亘ってサイホン管路と同数の吸水ゾーンに区画し、各サイホン管路に通じる吸水口を各サイホン管路に対応する吸水ゾーンに設けることが好ましい。このようにすると、家屋の屋根から軒樋に流れ込んだ雨水を、軒樋のそれぞれの吸水ゾーンの吸水口からほぼ均等にサイホン管路へ吸水できるため、軒樋全長に亘って水位がほぼ一定となる。従って、水位が部分的に高くなって雨水が軒樋から溢れ出すことがないので、軒樋として容量の小さいものを使用できるようになる。
【００１０】
上記のように複数のサイホン管路を軒樋の底部に設ける場合は、この軒樋底部のサイホン管路と同数のサイホンＴ形合流管路を並列に形成した上合と、軒樋底部のサイホン管路と同数のサイホン短管路を並列に且つ９０°捻じって形成した捻じり継手と、軒樋底部のサイホン管路と同数のサイホン曲管路を並列に形成したエルボ継手と、軒樋底部のサイホン管路と同数のサイホン直管路を並列に形成した堅樋部材とを組み合わせて接続することにより、軒樋底部のサイホン管路と同数の縦サイホン管路を設けると共に、上合と軒樋を接続することによってそれぞれの縦サイホン管路を軒樋底部のそれぞれのサイホン管路に接続することが好ましい。
【００１１】
また、本発明のサイホン式雨水排水装置は、軒樋の底部に単数のサイホン管路を設けると共に、縦サイホン管路となる可撓性のサイホンチューブの上端を軒樋底部のサイホン管路に接続し、吸水口の位置をサイホンチューブの接続箇所から軒樋の長手方向両側にずらせる構成とすることも好ましい。このようにすると、屈曲自在な縦サイホン管路を容易に形成でき、しかも、吸水口の位置がサイホンチューブ接続箇所からずれているため空気を吸い込んでサイホン作用が停止する心配も解消される。
【００１２】
上記のように軒樋の底部に単数のサイホン管路を設けてサイホンチューブを接続する場合は、サイホン管路のサイホンチューブ接続箇所の上面に掃除口を形成して、該掃除口にキャップを脱着自在に取付けることが好ましく、また、サイホンチューブを軒天の裏側から家屋外壁材の裏側の内壁材との中空部を通して地中の雨水ますに接続することが好ましい。このようにすると、掃除口からキャップを取り外して線状の掃除具等でサイホンチューブや軒樋底部のサイホン管路を簡単に清掃することが可能となり、また、サイホンチューブが屋外に露出しないので家屋の外観を向上させることができる。
【００１３】
【発明の実施の形態】
以下、図面を参照して本発明の実施形態を詳述する。
【００１４】
図１は本発明の一実施形態に係るサイホン式雨水排水装置の全体図、図２は同装置の軒樋の平面図、図３は同軒樋の横断面図、図４は同装置の上合と軒樋との接続部分を示す平面図、図５は同接続部分の正面図、図６は同上合の斜視図、図７（ａ）は図６のＡ−Ａ線断面図、図７（ｂ）は図６のＢ−Ｂ線断面図、図８は同装置の軒樋と上合と捻じり継手とエルボ継手を接続した部分の正面図、図９は同捻じり継手を示すもので（ａ）は平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図、図１０は同エルボ継手の斜視図、図１１は同装置の堅樋部材の斜視図、図１２は同装置の変換継手の斜視図である。
【００１５】
図１に示すサイホン式雨水排水装置は、底部に複数のサイホン管路１ａを設けた軒樋１と、複数の縦サイホン管路を形成する上合２、捻じり継手３、エルボ継手４、堅樋部材５などの主要部品によって構成されている。これらの部品はいずれも、ポリカーボネート、ポリ塩化ビニル、ポリオレフィンなどの熱可塑性合成樹脂で押出成形あるいは射出成形されたものである。
【００１６】
上記の軒樋１は、図３に示すように、上端に耳部１ｂを有する前板１ｃと後板１ｄを二重構造の底部１ｅの前縁と後縁からそれぞれ立設したものであって、二重構造の底部１ｅは数枚の仕切り板１ｆで幅方向に仕切られ、それによって略正方形の開口断面形状を有する複数のサイホン管路１ａが軒樋底部１ｅの全長に亘って並列に形成されている。
【００１７】
図２に示すように、この軒樋１の底部１ｅは長手方向にサイホン管路１ａと同数の吸水ゾーンＺに区画され、各サイホン管路１ａに通じる吸水口１ｇが各サイホン管路１ａに対応する吸水ゾーンＺに複数個ずつ穿設されている。従って、家屋の屋根２０から軒樋１に流れ込んだ雨水がそれぞれの吸水ゾーンＺの吸水口１ｇからほぼ均等に吸水されるため、軒樋全長に亘って水位がほぼ一定となり、部分的に水位の高いところから雨水が溢れ出すことはない。
【００１８】
この実施形態の軒樋１では、軒樋底部１ｅに６本のサイホン管路１ａを設け、軒樋底部１ｅを長手方向に６つの吸水ゾーンＺに区画しているが、サイホン管路１ａの本数は６本より多くても少なくてもよく、そのサイホン管路１ａの本数に合わせて吸水ゾーンＺの数を増減すればよい。また、この軒樋１では、各サイホン管路１ａに通じる吸水口１ｇを各吸水ゾーンＺに３つずつ穿設しているが、吸水口１ｇの数はこれより多くても少なくてもよく、その形状も制限されない。
【００１９】
サイホン管路１ａの開口断面形状は、この実施形態のような略正方形に限定されるものではなく、長方形、円形、楕円形など種々の形状となしうるものであるが、いずれの開口断面形状の場合でも、良好なサイホン作用を発揮させるためにその開口面積を２〜２０ｃｍ^２の範囲に設定することが望ましい。従って、この実施形態のサイホン管路１ａのように開口断面形状が略正方形である場合は、その一辺の長さを略１．４〜４．５ｃｍ程度とすることが好ましく、また、サイホン管路の開口断面形状が円形である場合は、その直径を１．５〜５．０ｃｍ程度とすることが好ましい。サイホン管路１ａの開口面積が２０ｃｍ^２よりも大きくなると、既述したように、大雨のときでもサイホン管路内が雨水で満たされ難いためサイホン作用を発揮できない恐れが生じ、一方、開口面積が２ｃｍ^２よりも小さくなると、ゴミ等の固形物が管路１ａ内に詰まりやすくなる。開口面積の好ましい範囲は３〜１０ｃｍ^２であり、このような小さい開口面積であると、サイホン管路１ａの縦辺を短くできて軒樋１の体裁を保つことができる。また、後述する捻じり継手３、エルボ継手４、堅樋部材５においても奥行幅を短くでき、薄い継手や堅樋部材とすることができる。そのため、外壁材からの突出を少なくすることができ、家屋の外観を良くすることができるし、外壁材と内壁材との中空部にも配置しやすくなる。
【００２０】
上記の上合２は、図６、図７に示すように、上端に耳部２ｂを有する前板２ｃと後板２ｄを底部２ｅの前縁と後縁から立設したもので、この上合２の長手方向両端には、軒樋１を接続するための軒樋嵌合部２ｆ，２ｆが軒樋１の肉厚分だけ外側に膨出して形成されており、上記耳部２ｂの両端部は、接続される軒樋１の耳部１ｂを押える耳押えになっている。
【００２１】
両端の軒樋嵌合部２ｂ，２ｂの間の底部２ｅは二重構造とされ、この底部２ｅの長手方向中央から下方に向かって長方形の差込み口２ｇが突設されている。この二重構造の底部２ｅと差込み口２ｇはＴ形に連通しており、図７（ｂ）に示すように仕切り板２ｈで幅方向に仕切ることによって、図７（ａ）に示すようなサイホンＴ形合流管路２ａが前記軒樋底部のサイホン管路１ａと同じ数（この実施形態では６つ）だけ並列に形成されている。このサイホンＴ形合流管路２ａの両端開口の形状及び大きさは前記軒樋底部のサイホン管路１ａの端部開口の形状及び大きさと同一であり、従って、図４、図５，図８に示すように前記軒樋１を左右から上合２の軒樋嵌合部２ｆ，２ｆの内側に嵌合して接続すると、軒樋底部の各サイホン管路１ａと上合２の各サイホンＴ形合流管路２ａが連通するようになっている。
【００２２】
また、上記の捻じり継手３は、図８、図９に示すように、９０°捻じられた長方形の開口断面形状を有する短筒体３ｂの内部を捻じり仕切り板３ｃで仕切ることにより、略正方形の開口断面形状を有する９０°捻じられたサイホン短管路３ａを前記軒樋底部のサイホン管路１ａと同じ数（この実施形態では６本）だけ並列に形成したものであって、短筒体３ｂの上端には前記上合２の差込み口２ｇを接続するための長方形の受け口３ｄが一体に形成されており、短筒体３ｂの下端部はエルボ継手４に差込み接続するための差込み口３ｅとなっている。
【００２３】
サイホン短管路３ａの上下両端の開口の形状及び大きさは、前記上合２のサイホンＴ形合流管路２ａの下端開口の形状及び大きさと同一であり、従って、図８に示すように上合２の差込み口２ｇを捻じり継手３の受け口３ｄに差し込んで接続すると、上合２の各サイホンＴ形合流管路２ａと捻じり継手３の各サイホン短管路３ａが連通するようになっている。このように上合２と捻じり継手３を接続すると、管路の並列方向が９０°転換されて家屋の外壁と平行になるので、外壁からの突出寸法を小さくすることができる。
【００２４】
エルボ継手４は、図１０に示すように、長方形の開口断面形状を有する湾曲筒体４ｂの内部を湾曲仕切り板４ｃで仕切ることにより、略正方形の開口断面形状を有するサイホン曲管路４ａを前記軒樋底部のサイホン管路１ａと同じ数（この実施形態では６本）だけ並列に形成したものであって、湾曲筒体４ｂの上端には前記捻じり継手３の差込み口３ｅを接続するための長方形の受け口４ｄが一体に形成されており、湾曲筒体４ｂの下端部は樋部材５に差込み接続するための差込み口４ｅとなっている。
【００２５】
サイホン曲管路４ａの上下両端の開口の形状及び大きさは、前記捻じり継手３のサイホン短管路３ａの下端開口の形状及び大きさと同一であり、従って、図１に示すように捻じり継手３の下端の差込み口をエルボ継手４の上端の受け口４ｄに差し込んで接続すると、捻じり継手３の各サイホン短管路３ａとエルボ継手４の各サイホン曲管路４ａが連通するようになっている。
【００２６】
堅樋部材５は、図１１に示すように、長方形の開口断面形状を有する直筒体５ｂの内部を仕切り板５ｃで仕切ることにより、略正方形の開口断面形状を有するサイホン直管路５ａを前記軒樋底部のサイホン管路１ａと同じ数（この実施形態では６本）だけ並列に形成したものであって、直筒体５ｂの上端には前記エルボ継手４の差込み口４ｅを接続するための長方形の受け口５ｄが一体に形成されており、直筒体５ｂの下端部はエルボ継手４の受け口４ｄに差込みできるようになっている。
【００２７】
サイホン直管路５ａの上下両端の開口の形状及び大きさは、前記エルボ継手４のサイホン曲管路３ａの下端開口の形状及び大きさと同一であり、従って、図１に示すようにエルボ継手４の下端の差込み口を堅樋部材５の上端の受け口５ｄに差し込んで接続すると、エルボ継手４の各サイホン曲管路４ａと樋部材５の各サイホン直管路５ａが連通するようになっている。
【００２８】
図１に示すサイホン式雨水排水装置は、上合２の差込み口２ｇを捻じり継手３の上端の受け口３ｄに差込み接続し、捻じり継手３の下端の差込み口３ｅをエルボ継手４の上端の受け口４ｄに差込み接続し、エルボ継手４の下端の差込み口４ｅを堅樋部材５の上端の受け口５ｄに差込み接続し、さらにエルボ継手４と堅樋部材５を交互に差込み接続することによって、上合２のサイホンＴ形合流管路２ａ、捻じり継手３のサイホン短管路３ａ、エルボ継手４のサイホン曲管路４ａ、堅樋部材５のサイホン直管路５ａを連通させると共に、さらにエルボ継手４のサイホン曲管路４ａと堅樋部材５のサイホン直管路５ａを交互に連通させ、家屋の外壁材２１に沿って軒樋底部のサイホン管路１ａと同数（６本）の縦サイホン管路を並列に設けている。そして、軒樋１を上合２の軒樋嵌合部２ｆ，２ｆに左右から嵌合、接続することによって、軒樋底部の６本のサイホン管路１ａと上記の６本の縦サイホン管路を連通させて接続している。この縦サイホン管路の下端に位置するエルボ継手４は、変換継手６を介して円形の排水管７に接続され、この排水管７は地中の雨水ます（不図示）に接続されている。これらの各部材の差込み接続は、いずれも接着剤を塗布して気密的に行われることは言うまでもない。
【００２９】
上記の変換継手６は、図１２に示すように、エルボ継手の下端の差込み口が差し込まれる長方形の受け口６ａを上端に設け、円形排水管７が差込み接続される円形の接続口６ｂを下端に設けたものである。
【００３０】
以上のような構成のサイホン式雨水排水装置は、小雨のときには、屋根２０から軒樋１に流れ込んだ雨水が軒樋底部１ｅの各吸水ゾーンＺの吸水口１ｇからそれぞれのサイホン管路１ａに流入して、それぞれの縦サイホン管路内を自然落下し、円形排水管７を通って排水される。
【００３１】
一方、大雨のときには、軒樋底部の吸水口１ｇからサイホン管路１ａへの流入量が増加し、軒樋底部のサイホン管路１ａと縦サイホン管路が雨水で満たされると、吸水口１ｇと縦サイホン管路の下端との間に圧力差が生じ、サイホン作用によって雨水が吸水口１ｇから吸い込まれて自然落下排水の数倍の流速で軒樋底部のサイホン管路１ａと縦サイホン管路を流れ落ち、多量の雨水が極めて効率良く排水される。例えば、軒樋底部のサイホン管路１ａと縦サイホン管路の開口面積が略３ｃｍ^２、吸水口１ｇと縦サイホン管路の下端までの高低差が略３ｍであると、雨水の流速は略１．７ｍ／秒程度になり、６本のサイホン管路１ａと６本の縦サイホン管路で排水できる雨量は略３リットル／秒程度になる。
【００３２】
このようにサイホン式雨水排水装置は排水効率が極めて高く、しかも、軒樋１の各吸水ゾーンＺの吸水口１ｇから雨水が略均等に吸水されて軒樋１内部の水位が略一定となるため、軒樋１を従来より小型化することが可能になる。そして、上合２，捻じり継手３、エルボ継手４、堅樋部材５を組み合わせて接続することにより設けられる縦サイホン管路の相互間隔も、従来の堅樋間隔より広げることが可能となるので、縦サイホン管路の設置数が少なくなり、コストアップや家屋の美観低下を防止することができる。
【００３３】
なお、雨水の流速が上記のように速いため、軒樋底部のサイホン管路１ａや縦サイホン管路にゴミなどの固形物は詰まりにくいが、場合によっては軒樋底部の吸水口１ｇにゴミ除けカバーなどを被着して、ゴミ詰まりをより確実に防止するようにしてもよい。
【００３４】
また、上述したサイホン式雨水排水装置は、軒樋１の底部１ｅにサイホン管路１ａを並列させて一段だけ設けているが、場合によっては、サイホン管路１ａを並列させて上下二段に重ねて設けてもよい。その場合は、上合２のサイホンＴ形合流管路２ａ、捻じり継手３のサイホン短管路３ａ、エルボ継手４のサイホン曲管路４ａ、堅樋部材５のサイホン直管路５ａを、いずれも並列させて二段に重ねて設け、これらを組合わせて接続したとき、並列して二段に重なった縦サイホン管路が形成されるようにする必要がある。
【００３５】
図１３は本発明の他の実施形態に係るサイホン式雨水排水装置の全体図、図１４は同装置の軒樋の平面図、図１５は図１４のＣ−Ｃ線拡大断面図、図１６は図１４のＣ−Ｃ線拡大分解断面図、図１７は同軒樋の拡大部分平面図、図１８は図１４のＤ−Ｄ線拡大断面図、図１９は図１４のＤ−Ｄ線拡大分解断面図、図２０は同装置の水切りリングの斜視図である。
【００３６】
図１３に示すサイホン式雨水排水装置は、軒樋底部に単数のサイホン管路１ａを設けた軒樋１、縦サイホン管路となる可撓性のサイホンチューブ８などの主要部品によって構成されている。
【００３７】
この軒樋１は、図１５、図１６に示すように、上端に耳部１ｂを有する前板１ｃと後板１ｄを二重構造の底部１ｅの前縁と後縁からそれぞれ立設したものであって、二重構造の底部１ｅは１枚の仕切り板１ｆで仕切られ、それによって略正方形の開口断面形状を有する一本のサイホン管路１ａが軒樋底部１ｅの後縁沿いに全長に亘って形成されている。このサイホン管路１ａの開口面積は、前記実施形態における軒樋底部のサイホン管路と同様に２〜２０ｃｍ^２，好ましくは３〜１０ｃｍ^２に設定すれば良好なサイホン作用を発揮できる。
【００３８】
図１４、図１８、図１９に示すように、サイホン管路１ａの上面には、矩形の吸水口１ｇが長手方向に間隔をあけて複数形成されており、各吸水口１ｇには合成樹脂製のドーム形のゴミ除けカバー１ｈが取付けられている。吸水口１ｇの位置は、サイホンチューブ８の接続箇所から長手方向にずれていることが必要であり、このように吸水口１ｇの位置がずれていると空気を吸い込んでサイホン作用が停止する心配がなくなる。
【００３９】
ゴミ除けカバー１ｈは、図１７、図１９に示すように、多数のスリット１ｉが形成されたドーム形の本体の下端に矩形の差込み口１ｊを形成したもので、この差込み口１ｊが矩形の吸水口１ｇに嵌合されて取付けられている。この差込み口１ｊの下端には戻り防止爪が形成されているため、上記のように吸水口１ｇに嵌合して取付けると、簡単に外れることはない。このようにゴミ除けカバー１ｈを取付けると、雨水のみがスリット１ｉから吸い込まれ、ゴミその他の固形物が除去されるので、サイホン管路１ａやサイホンチューブ８のゴミ詰まりをより確実に防止することができる。
【００４０】
軒樋底部１ｅの上面は、その前縁側から後縁側に向かって高さが徐々に低くなるように若干傾斜し、軒樋１内部に流入した雨水が吸水口１ｇから残らずサイホン管路１ａ内へ流れ込むようになっている。軒樋の底部１ｅに雨水が残っていると、上階から見下ろしたときの外観が悪くなるが、上記のように雨水が残らずサイホン管路１ａ内へ流れ込むと良好な外観を保つことができる。
【００４１】
サイホンチューブ８の接続箇所は、図１５，図１６に示すように、軒樋底部の厚肉の後板１ｄに後方から孔１ｋを開けてタップを切り、先端に雄ネジを形成したねじ込みソケット１ｍを上記の孔１ｋにねじ込んで、サイホンチューブ８の端部をねじ込みソケット１ｍに嵌合接続すると共に、水切り部材１ｎをサイホンチューブ８に外嵌着した構造となっている。この水切り部材１ｎは、図２０に示すように、一部が切欠された開環状に形成されており、サイホンチューブ８をねじ込みソケット１ｍ嵌合接続した後から該チューブ８に外嵌着できるようになっている。なお、孔１ｋにタップを予め切らないで、ねじ込みソケット１ｍでタップを切りながらねじ込むようにしてもよい。
【００４２】
図１４、図１５、図１６に示すように、サイホン管路１ａのサイホンチューブ接続箇所の上面には長方形の掃除口１ｐが設けられ、該掃除口１ｐに長方形のキャップ１ｑが被着されている。このキャップ１ｑはゴム製で、裏面に差込み口１ｒが形成されており、この差込み口１ｒを掃除口１ｐに嵌め込むことによって、気密的に且つ脱着自在に取付けられている。従って、このキャップ１ｑを取り外して線状の掃除具等を掃除口１ｐから挿入することにより、サイホンチューブ８や軒樋底部のサイホン管路１ａを容易に清掃することが可能である。
【００４３】
縦サイホン管路となるサイホンチューブ８は、軟質合成樹脂や合成ゴムなどからなる可撓性を有するチューブであって、図１３に示すように、このサイホンチューブ８は軒先の破風板２２を貫通して軒天２３の裏側から、家屋外壁材２１とその裏側の内壁材２４との中空部２５を通って、屋外の地中の雨水ます２６に接続されている。従って、サイホンチューブ８が家屋の外側に露出しないので、家屋の美観を向上させることができる。
【００４４】
上記ようにサイホンチューブ８を家屋外壁材２１と内壁材２４との中空部２５に通しても、水切り部材１ｎによって雨水が水切りされ、軒天２３の裏側への雨水の侵入が防止されるので問題は生じない。特に、サイホンチューブ８を通す破風板２２の孔を塞ぐように水切り部材１ｎを取付け固定すると、より確実に雨水の侵入を防止することができる。また、サイホンチューブ８は、家屋外壁材２１に近づけて中空部２５を通すことが望ましく、そのようにすると、サイホンチューブ８を取りまく空気の温度と外気温との温度差が小さくなるため、サイホンチューブ８内を雨水が流下しても結露が生じ難くなる。また、サイホンチューブ８の下端を雨水ます２６に接続しないで、雨水浸透トレンチ管（不図示）などに接続しても勿論よい。更に、上記のサイホンチューブ８と、別の軒樋からのサイホンチューブ８を一緒に一つの雨水ます２６に接続してもよく、このように複数のサイホンチューブ８を一つの雨水ます２６に接続すると、雨水ます２６の数を少なくして排水管の施工などを少なくできる。
【００４５】
なお、図１３において、２７は家屋外壁材２１と内壁材２４との中空部２５に充填された断熱材である。
【００４６】
以上のような構成のサイホン式雨水排水装置は、小雨のときには、屋根２０から軒樋１に流れ込んだ雨水がゴミ除けカバー１ｈを通過して軒樋底部１ｅの各吸水口１ｇからサイホン管路１ａに流入し、サイホンチューブ８内を自然落下して排水される。そして、大雨のときにサイホン管路１ａへの流入量が増加し、該サイホン管路１ａとサイホンチューブ８が雨水で満たされると、サイホン作用によって雨水が自然落下排水の数倍の流速でサイホン管路１ａとサイホンチューブ８を流れ落ち、多量の雨水が極めて効率良く排水される。特に、このサイホン式雨水排水装置は、サイホンチューブ８の上端と下端との高低差が大きくて雨水の流速が速いため、サイホン管路１ａとサイホンチューブ８が一本ずつでも、排水能力は十分である。
【００４７】
しかも、サイホンチューブ８が屋外に露出しないので外観が向上し、また、サイホンチューブ８を配設するだけで簡単に縦サイホン管路を形成できるため施工性が良く、コストの一層の低減を実現することができる。
【００４８】
この実施形態では、サイホンチューブ８として可撓性チューブを用いたが、硬質管を使用してもよい。さらに、軒樋１の後板に孔を開けたが、軒樋底部のサイホン管路１ａの下面に開孔して、該底部開孔にねじ込みソケット１ｍをねじ込んでこれに可撓性チューブや硬質管を接続し、外壁材２１の外面又は内面に沿わせて配設してもよい。
【００４９】
図２１は本発明の更に他の実施形態に係るサイホン式雨水排水装置の要部断面図である。
【００５０】
このサイホン式雨水排水装置は、軒樋１の底部１ｅを二重構造としないで単層構造とし、この底部１ｅの後縁沿いの下面に一本のサイホン管路１ａを形成している。その他の構成は前述した図１３のサイホン式雨水排水装置と同様であるので、図２１において同一部材に同一符号を付すにとどめ、説明は省略する。
【００５１】
このようなサイホン式雨水排水装置も、前述のサイホン式雨水排水装置と同様の作用効果を奏することは言うまでもない。
【００５２】
【発明の効果】
以上の説明から明らかなように、本発明のサイホン式雨水排水装置は、大雨になるとサイホン作用によって大量の雨水を極めて効率よく排水することができ、しかも、軒樋の小型化が可能である上に、縦サイホン管路の配設間隔を広げたり、縦サイホン管路を見えないように家屋外壁材の裏側に配設することが可能であるため、家屋の外観を向上させることができると共に、施工費用の低減を図ることもできるといった効果を奏する。
【図面の簡単な説明】
【図１】図１は本発明の一実施形態に係るサイホン式雨水排水装置の全体図である。
【図２】同装置の軒樋の平面図である。
【図３】同軒樋の横断面図である。
【図４】同装置の上合と軒樋との接続部分を示す平面図である。
【図５】同接続部分の正面図である。
【図６】同上合の斜視図である。
【図７】（ａ）は図６のＡ−Ａ線断面図、（ｂ）は図６のＢ−Ｂ線断面図である。
【図８】同装置の軒樋と上合と捻じり継手とエルボ継手を接続した部分の正面図である。
【図９】同捻じり継手を示すもので（ａ）は平面図、（ｂ）は正面図、（ｃ）は右側面図、（ｄ）は底面図である。
【図１０】同エルボ継手の斜視図である。
【図１１】同装置の樋部材の斜視図である。
【図１２】同装置の変換継手の斜視図である。
【図１３】本発明の他の実施形態に係るサイホン式雨水排水装置の全体図である。
【図１４】同装置の軒樋の平面図である。
【図１５】図１４のＣ−Ｃ線拡大断面図である。
【図１６】図１４のＣ−Ｃ線拡大分解断面図である。
【図１７】同軒樋の拡大部分平面図である。
【図１８】図１４のＤ−Ｄ線拡大断面図である。
【図１９】図１４のＤ−Ｄ線拡大分解断面図である。
【図２０】同装置の水切りリングの斜視図である。
【図２１】本発明の更に他の実施形態に係るサイホン式雨水排水装置の要部断面図である。
【符号の説明】
１軒樋
１ａサイホン管路
１ｅ軒樋底部
１ｇ吸水口
１ｈゴミ除けカバー
１ｐ掃除口
１ｑキャップ
Ｚ吸水ゾーン
２上合
２ａサイホンＴ形合流管路
３捻じり継手
３ａサイホン短管路
４エルボ継手
４ａサイホン曲管路
５堅樋部材
５ａサイホン直管路
８サイホンチューブ
２１家屋外壁材
２３軒天
２４内壁材
２５中空部
２６雨水ます[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a siphon-type rainwater drainage device that can drain rainwater extremely efficiently during heavy rain.
[0002]
[Prior art]
In a conventional house, an eaves gutter was attached to the eaves so as to have a flow gradient toward the kamigo (collector), and the rainwater flowing into the kamigo was naturally dropped through a hard gutter to drain water. However, because the appearance of the house is not good if the eaves gutter has a flow gradient, modern houses are increasingly mounting the eaves gutter horizontally without a flow gradient.
[0003]
[Problems to be solved by the invention]
However, the drainage system that collects rainwater at the eaves gutter and falls naturally inside the hard gutter as in the past is not very efficient in drainage, especially when the eaves gutter is installed horizontally. The further away, the lower the drainage efficiency and the higher the water level inside the eaves gutter. For this reason, it is necessary to install a large eaves gutter larger than the originally required capacity, or to reduce the interval between the upper and lower claddings, which leads to an increase in cost, and the appearance of the house is impaired due to an increase in the number of claddings and hard gutters. There was a problem.
[0004]
The present invention has been made in order to address the above-described problems, and has an object to be able to drain a large amount of rainwater extremely efficiently by a siphon action during heavy rain, without increasing the cost or impairing the appearance of a house. An object of the present invention is to provide a siphon type rainwater drainage device.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the siphon type rainwater drainage device according to the present invention is configured such that a siphon conduit is provided at the bottom of the eaves gutter over the entire length of the eaves gutter, and a water intake opening from the inside of the eaves gutter to the siphon conduit is provided. It is characterized in that the upper end of a vertical siphon pipe provided vertically along the outer wall material of the house is connected to the siphon pipe of the eaves gutter.
[0006]
In such a siphon type rainwater drainage system, in the case of light rain, rainwater flowing from the roof into the eaves gutter flows into the siphon pipeline from the water intake at the bottom of the eaves gutter, and falls naturally in the vertical siphon pipeline to be drained. . During heavy rain, the amount of inflow from the water intake to the siphon conduit at the bottom of the eaves gutter increases, and when the siphon conduit and the vertical siphon conduit at the bottom of the eaves gutter are filled with rainwater, the siphon action causes the rainwater to flow into the water intake. It is sucked from the water and flows down the siphon pipe and the vertical siphon pipe at the bottom of the eaves gutter at a flow rate several times that of the natural drainage, and a large amount of rainwater is drained extremely efficiently. Therefore, the siphon type rainwater drainage device of the present invention can use a smaller eaves gutter than the conventional one, and the interval between the connecting points of the vertical siphon conduits is wider than the conventional solid gutter interval to form the vertical siphon conduits. Since the number of connection points can be reduced, there is no need to increase the cost or spoil the appearance of the house.
[0007]
In the siphon type rainwater drainage device of the present invention, the opening area of the siphon pipe at the bottom of the eaves gutter or the vertical siphon pipe along the outer wall material is 2 to 20 cm. ² It is preferable to set the opening area so that a good siphon action is exhibited. Opening area is 20cm ² If it becomes larger, it becomes difficult for the siphon pipeline and the vertical siphon pipeline at the bottom of the eaves gutter to be filled with rainwater even in the case of heavy rain.
Since the flow rate of rainwater flowing through these pipes by the siphon action is high, even if the opening area of these pipes is small to a certain extent, dust and other solid matter will not be washed out and clogged in the pipes, but Opening area is 2cm ² If the size is smaller, dust and the like are likely to be clogged.
[0008]
In the siphonic rainwater drainage device of the present invention, it is preferable to attach a dust cover to the water inlet, and in this way, it is possible to more reliably prevent clogging of the siphon pipeline and the vertical siphon pipeline at the bottom of the eaves gutter. Can be.
[0009]
In the siphon type rainwater drainage device of the present invention, a plurality of siphon conduits are provided in parallel at the bottom of the eaves gutter, and the eaves gutter is divided into the same number of water absorption zones as the siphon conduits over the entire length, and each siphon conduit is provided with a siphon conduit. Is preferably provided in a water absorption zone corresponding to each siphon pipe. In this way, the rainwater flowing into the eaves gutter from the roof of the house can be almost uniformly absorbed into the siphon conduit from the water intakes of the respective evacuation zones of the eaves gutter, so that the water level is almost constant over the entire length of the eaves gutter. Become. Accordingly, since the water level does not partially rise and rainwater does not overflow from the eaves gutter, a small eaves gutter can be used.
[0010]
When a plurality of siphon conduits are provided at the bottom of the eaves gutter as described above, the same number of siphon T-type merging conduits as the siphon conduits at the bottom of the eaves gutter are formed in parallel with the siphon at the bottom of the eaves gutter. A torsion joint formed by twisting the same number of siphon short pipes in parallel and 90 ° as the pipes, an elbow joint formed in parallel with the same number of siphon bent pipes as the siphon pipes at the bottom of the eaves gutter, and an eaves gutter By combining the bottom siphon pipeline and the same number of siphon straight pipes in parallel with the hard gutter members formed in parallel, the same number of vertical siphon pipelines as the siphon pipeline at the bottom of the eaves gutter are provided. Preferably, each longitudinal siphon line is connected to a respective siphon line at the bottom of the eaves gutter by connecting an eaves gutter.
[0011]
Further, the siphon type rainwater drainage device of the present invention provides a single siphon conduit at the bottom of the eaves gutter, and connects the upper end of a flexible siphon tube serving as a vertical siphon conduit to the siphon conduit at the bottom of the eaves gutter. However, it is also preferable to adopt a configuration in which the position of the water intake port is shifted from the connection point of the siphon tube to both longitudinal sides of the eaves gutter. In this way, a flexible vertical siphon pipe can be easily formed, and furthermore, since the position of the water intake port is displaced from the connection point of the siphon tube, the fear that the siphon action stops due to the inhalation of air is also eliminated.
[0012]
When a single siphon pipe is provided at the bottom of the eaves gutter and a siphon tube is connected as described above, a cleaning port is formed on the upper surface of the siphon tube connection point of the siphon pipe, and a cap is attached to and removed from the cleaning port. It is preferable to attach the siphon tube freely, and it is also preferable to connect the siphon tube from the back of the eaves to the underground rainwater trough through the hollow portion with the inner wall material on the back side of the house outdoor wall material. By doing so, it is possible to remove the cap from the cleaning port and easily clean the siphon tube and the siphon conduit at the bottom of the eaves gutter with a linear cleaning tool. Can be improved in appearance.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
1 is an overall view of a siphon type rainwater drainage device according to one embodiment of the present invention, FIG. 2 is a plan view of an eaves gutter of the device, FIG. 3 is a cross-sectional view of the eaves gutter, and FIG. FIG. 5 is a plan view showing a connection portion between the joint and the eave gutter, FIG. 5 is a front view of the connection portion, FIG. 6 is a perspective view of the same connection, FIG. 7A is a cross-sectional view taken along line AA of FIG. (B) is a cross-sectional view taken along the line BB in FIG. 6, FIG. 8 is a front view of a portion where the eaves gutter, the upper joint, the torsion joint, and the elbow joint are connected, and FIG. 9 shows the torsion joint. (A) is a plan view, (b) is a front view, (c) is a right side view, (d) is a bottom view, FIG. 10 is a perspective view of the elbow joint, and FIG. FIG. 12 is a perspective view of a conversion joint of the apparatus.
[0015]
The siphon type rainwater drainage device shown in FIG. 1 has an eaves gutter 1 having a plurality of siphon conduits 1a at the bottom, an upper joint 2, a torsion joint 3, an elbow joint 4, and a plurality of vertical siphon conduits forming a plurality of vertical siphon conduits. It is composed of main parts such as a gutter member 5. These parts are all formed by extrusion molding or injection molding of a thermoplastic synthetic resin such as polycarbonate, polyvinyl chloride and polyolefin.
[0016]
As shown in FIG. 3, the eaves gutter 1 has a front plate 1c and a rear plate 1d having a lug 1b at the upper end, respectively, standing upright from a front edge and a rear edge of a bottom portion 1e having a double structure. The bottom 1e of the double structure is partitioned in the width direction by several partition plates 1f, whereby a plurality of siphon conduits 1a having a substantially square opening cross section are formed in parallel over the entire length of the eaves gutter bottom 1e. Have been.
[0017]
As shown in FIG. 2, the bottom 1e of the eaves gutter 1 is partitioned in the longitudinal direction into the same number of water absorption zones Z as the siphon pipes 1a, and the water inlets 1g communicating with the respective siphon pipes 1a correspond to the respective siphon pipes 1a. The water absorption zone Z is formed in a plurality. Therefore, since the rainwater flowing into the eaves gutter 1 from the roof 20 of the house is almost uniformly absorbed from the water inlet 1g of each water absorption zone Z, the water level becomes substantially constant over the entire length of the eaves gutter, and the water level is partially maintained. Rainwater does not overflow from high places.
[0018]
In the eaves gutter 1 of this embodiment, six siphon pipes 1a are provided at the eaves gutter bottom 1e, and the eaves gutter bottom 1e is partitioned into six water absorption zones Z in the longitudinal direction. May be more or less than six, and the number of water absorption zones Z may be increased or decreased according to the number of siphon pipes 1a. Further, in the eaves gutter 1, three water inlets 1g communicating with the respective siphon conduits 1a are provided in each of the water absorption zones Z. However, the number of the water inlets 1g may be more or less. The shape is not limited.
[0019]
The cross-sectional shape of the opening of the siphon conduit 1a is not limited to a substantially square shape as in this embodiment, but may be various shapes such as a rectangle, a circle, and an ellipse. Even in the case, the opening area is 2 to 20 cm to exert a good siphon action. ² It is desirable to set in the range. Therefore, when the cross-sectional shape of the opening is substantially square as in the siphon conduit 1a of this embodiment, it is preferable that the length of one side is approximately 1.4 to 4.5 cm. When the cross-sectional shape of the opening is circular, the diameter is preferably about 1.5 to 5.0 cm. Open area of siphon pipe 1a is 20cm ² If it is larger than that, as described above, even in heavy rain, it is difficult to fill the siphon pipeline with rainwater, and there is a risk that the siphon effect cannot be exerted. On the other hand, the opening area is 2 cm. ² If it is smaller, solid matter such as dust tends to clog in the pipeline 1a. The preferred range of the opening area is 3 to 10 cm ² With such a small opening area, the vertical side of the siphon conduit 1a can be shortened, and the appearance of the eaves gutter 1 can be maintained. Further, the torsion joint 3, the elbow joint 4, and the hard gutter member 5, which will be described later, can have a reduced depth width, and can be a thin joint or a hard gutter member. Therefore, the protrusion from the outer wall material can be reduced, the appearance of the house can be improved, and the housing can be easily arranged in the hollow portion between the outer wall material and the inner wall material.
[0020]
As shown in FIGS. 6 and 7, the upper joint 2 comprises a front plate 2c and a rear plate 2d each having an ear 2b at the upper end thereof, which are erected from the front edge and the rear edge of the bottom 2e. Eaves gutter fitting portions 2f, 2f for connecting the eaves gutter 1 are formed to protrude outward by the thickness of the eaves gutter 1 at both ends in the longitudinal direction of the eaves gutter 1. Is an ear retainer for pressing the ear 1b of the eaves gutter 1 to be connected.
[0021]
A bottom portion 2e between the eaves gutter fitting portions 2b, 2b at both ends has a double structure, and a rectangular insertion port 2g protrudes downward from the longitudinal center of the bottom portion 2e. The bottom 2e and the insertion port 2g of this double structure communicate with each other in a T-shape. The siphon as shown in FIG. 7A is divided by a partition plate 2h in the width direction as shown in FIG. 7B. T-shaped merging pipes 2a are formed in parallel by the same number (six in this embodiment) as siphon pipes 1a at the bottom of the eaves gutter. The shape and size of the opening at both ends of the siphon T-shaped merging line 2a are the same as the shape and size of the end opening of the siphon line 1a at the bottom of the eaves gutter. As shown, when the eaves gutter 1 is fitted and connected from the left and right to the inside of the eaves gutter fitting portions 2f, 2f of the upper eaves 2, each siphon conduit 1a at the bottom of the eaves gutter and each siphon T-shaped of the upper eaves 2 are formed. The junction pipe 2a communicates.
[0022]
As shown in FIGS. 8 and 9, the torsion joint 3 is substantially formed by partitioning the inside of a short cylindrical body 3b having a rectangular opening cross-sectional shape twisted by 90 ° with a torsion partition plate 3c. A 90 ° twisted siphon short pipe 3a having a square opening cross-sectional shape is formed in parallel with the same number (six in this embodiment) as the siphon pipes 1a at the bottom of the eaves gutter. At the upper end of the body 3b, a rectangular receptacle 3d for connecting the insertion port 2g of the upper joint 2 is integrally formed, and at the lower end of the short cylindrical body 3b, an insertion port for insertion connection to the elbow joint 4 is formed. 3e.
[0023]
The shape and size of the openings at the upper and lower ends of the short siphon conduit 3a are the same as the shape and size of the lower end opening of the siphon T-shaped merging conduit 2a of the upper joint 2, and therefore, as shown in FIG. When the insertion port 2g of the joint 2 is inserted and connected to the receiving port 3d of the torsion joint 3, each siphon T-shaped junction pipe 2a of the upper joint 2 and each siphon short pipe 3a of the torsion joint 3 communicate with each other. ing. When the upper joint 2 and the torsion joint 3 are connected in this manner, the parallel direction of the pipelines is changed by 90 ° and becomes parallel to the outer wall of the house, so that the protrusion dimension from the outer wall can be reduced.
[0024]
As shown in FIG. 10, the elbow joint 4 separates the inside of a curved cylindrical body 4b having a rectangular opening cross section with a curved partition plate 4c to form a siphon curved pipe 4a having a substantially square opening cross section. The same number (six in this embodiment) as the siphon pipes 1a at the bottom of the eaves gutter are formed in parallel, and the upper end of the curved tubular body 4b is connected to the insertion port 3e of the torsion joint 3. Is formed integrally, and the lower end of the curved cylindrical body 4b is an insertion port 4e for inserting and connecting to the gutter member 5.
[0025]
The shape and size of the opening at the upper and lower ends of the siphon bent pipe 4a are the same as the shape and size of the lower end opening of the siphon short pipe 3a of the torsion joint 3, and therefore, as shown in FIG. When the insertion port at the lower end of the joint 3 is inserted and connected to the receptacle 4d at the upper end of the elbow joint 4, each short siphon pipe 3a of the torsion joint 3 and each siphon bent pipe 4a of the elbow joint 4 communicate. ing.
[0026]
As shown in FIG. 11, the hard gutter member 5 divides the inside of a straight cylindrical body 5b having a rectangular opening cross section with a partition plate 5c, thereby forming a siphon straight pipe line 5a having a substantially square opening cross section. It is formed in parallel with the same number (six in this embodiment) as the siphon pipes 1a at the bottom of the gutter, and has a rectangular shape for connecting the insertion port 4e of the elbow joint 4 to the upper end of the straight cylindrical body 5b. The receiving port 5 d is formed integrally, and the lower end of the straight cylindrical body 5 b can be inserted into the receiving port 4 d of the elbow joint 4.
[0027]
The shape and size of the openings at the upper and lower ends of the siphon straight pipe 5a are the same as the shape and size of the lower end opening of the siphon bent pipe 3a of the elbow joint 4, and therefore, as shown in FIG. When the insertion port at the lower end is inserted and connected to the receiving port 5d at the upper end of the hard gutter member 5, each siphon curved pipe 4a of the elbow joint 4 and each siphon straight pipe 5a of the gutter member 5 communicate with each other. .
[0028]
In the siphon type rainwater drainage device shown in FIG. 1, the insertion port 2 g of the upper joint 2 is inserted and connected to the receptacle 3 d at the upper end of the torsion joint 3, and the insertion port 3 e at the lower end of the torsion joint 3 is connected to the upper end of the elbow joint 4. By inserting and connecting to the receptacle 4d, connecting the lower end insertion port 4e of the elbow joint 4 to the upper end receptacle 5d of the hard gutter member 5 and alternately connecting the elbow joint 4 and the hard gutter member 5 alternately, the The siphon T-type merging pipe 2a of the joint 2, the siphon short pipe 3a of the torsion joint 3, the siphon curved pipe 4a of the elbow joint 4, and the siphon straight pipe 5a of the rigid gutter member 5 communicate with each other. 4 and the siphon straight pipe 5a of the hard gutter member 5 alternately communicate with each other, and the same number (six) of the vertical siphon pipes as the siphon pipes 1a at the bottom of the eaves gutter along the outer wall material 21 of the house. Roads are provided in parallel By fitting and connecting the eaves gutter 1 to the eaves gutter fitting portions 2f, 2f of the upper eaves 2 from the left and right, the six siphon conduits 1a at the bottom of the eaves gutter and the above-mentioned six vertical siphon conduits are connected. Are connected. The elbow joint 4 located at the lower end of the vertical siphon pipe is connected to a circular drain pipe 7 via a conversion joint 6, and the drain pipe 7 is connected to an underground rainwater trough (not shown). Needless to say, the insertion connection of each of these members is performed airtight by applying an adhesive.
[0029]
As shown in FIG. 12, the conversion joint 6 has a rectangular receiving port 6a at the upper end into which the insertion port at the lower end of the elbow coupling is inserted, and a circular connection port 6b into which the circular drain pipe 7 is inserted and connected at the lower end. It is provided.
[0030]
In the siphon type rainwater drainage device configured as described above, in the case of light rain, the rainwater flowing into the eaves gutter 1 from the roof 20 flows into the respective siphon conduits 1a from the water inlets 1g of the respective water absorption zones Z at the eaves gutter bottom 1e. Then, the water naturally falls in each vertical siphon pipe, and is drained through the circular drain pipe 7.
[0031]
On the other hand, during heavy rain, the amount of water flowing into the siphon pipe 1a from the water intake 1g at the bottom of the eaves gutter increases, and when the siphon pipe 1a at the bottom of the eaves gutter and the vertical siphon pipe are filled with rainwater, the water intake 1g is formed. A pressure difference is generated between the lower end of the vertical siphon pipe and the siphon action, so that rainwater is sucked in from the water inlet 1g and flows at a flow rate several times that of the natural falling drainage, and the siphon pipe 1a at the bottom of the eaves gutter and the vertical siphon pipe are separated. Runoff and large amounts of rainwater are drained extremely efficiently. For example, the opening area of the siphon pipeline 1a at the bottom of the eaves gutter and the vertical siphon pipeline is approximately 3 cm. ² If the height difference between the water intake port 1g and the lower end of the vertical siphon pipe is about 3 m, the flow rate of rainwater is about 1.7 m / sec, and the six siphon pipes 1a and the six vertical siphon pipes are provided. The amount of rain that can be drained from the road is about 3 liters / sec.
[0032]
As described above, the siphon type rainwater drainage device has extremely high drainage efficiency, and furthermore, rainwater is almost uniformly absorbed from the water inlet 1g of each water absorption zone Z of the eaves gutter 1 and the water level inside the eaves gutter 1 becomes substantially constant. Thus, the eaves gutter 1 can be made smaller than before. Since the vertical siphon conduit provided by combining and connecting the upper joint 2, the torsion joint 3, the elbow joint 4, and the hard gutter member 5 can be wider than the conventional hard gutter gap. In addition, the number of vertical siphon pipes to be installed is reduced, so that it is possible to prevent an increase in cost and a decrease in the appearance of the house.
[0033]
Since the flow rate of rainwater is high as described above, solids such as dust are hardly clogged in the siphon pipe 1a and the vertical siphon pipe at the bottom of the eaves gutter. A cover or the like may be attached to prevent dust clogging more reliably.
[0034]
Further, in the above-mentioned siphon type rainwater drainage device, the siphon pipes 1a are provided only in one stage in parallel at the bottom 1e of the eaves gutter 1, but in some cases, the siphon pipes 1a are arranged in parallel and vertically stacked in two stages. May be provided. In this case, the siphon T-shaped merging pipe 2a of the upper joint 2, the siphon short pipe 3a of the torsion joint 3, the siphon curved pipe 4a of the elbow joint 4, and the siphon straight pipe 5a of the hard gutter member 5 are each connected. Also, it is necessary to form two vertical overlapping siphon conduits in parallel when they are combined and connected in two stages.
[0035]
13 is an overall view of a siphon type rainwater drainage device according to another embodiment of the present invention, FIG. 14 is a plan view of an eaves gutter of the device, FIG. 15 is an enlarged cross-sectional view taken along line CC of FIG. 14, and FIG. Fig. 17 is an enlarged partial plan view of the eaves gutter, Fig. 18 is an enlarged sectional view taken along line DD of Fig. 14, and Fig. 19 is an enlarged exploded sectional view of Fig. 14. FIG. 20 is a perspective view of a draining ring of the device.
[0036]
The siphon type rainwater drainage device shown in FIG. 13 is composed of main parts such as an eaves gutter 1 having a single siphon conduit 1a at the bottom of an eaves gutter, and a flexible siphon tube 8 serving as a vertical siphon conduit. .
[0037]
As shown in FIGS. 15 and 16, the eaves gutter 1 has a front plate 1c and a rear plate 1d having ears 1b at the upper end, respectively, standing upright from a front edge and a rear edge of a bottom portion 1e of a double structure. The bottom 1e of the double structure is partitioned by one partition plate 1f, so that one siphon pipe 1a having a substantially square opening cross-sectional shape extends over the entire length along the rear edge of the eaves gutter bottom 1e. It is formed. The opening area of the siphon pipe 1a is 2 to 20 cm, similarly to the siphon pipe at the bottom of the eaves gutter in the embodiment. ² , Preferably 3 to 10 cm ² If set to, a good siphon effect can be exhibited.
[0038]
As shown in FIGS. 14, 18, and 19, a plurality of rectangular water inlets 1g are formed on the upper surface of the siphon conduit 1a at intervals in the longitudinal direction, and each water inlet 1g is made of synthetic resin. Is attached. The position of the water inlet 1g needs to be shifted in the longitudinal direction from the connection point of the siphon tube 8, and if the position of the water inlet 1g is shifted in this way, there is a fear that the air is sucked and the siphon action stops. Gone.
[0039]
As shown in FIG. 17 and FIG. 19, the dust removing cover 1h has a rectangular insertion port 1j formed at the lower end of a dome-shaped main body in which a number of slits 1i are formed. It is fitted and attached to the mouth 1g. Since a return preventing claw is formed at the lower end of the insertion port 1j, it does not come off easily when fitted and attached to the water suction port 1g as described above. When the dust cover 1h is attached in this manner, only rainwater is sucked from the slit 1i, and dust and other solids are removed. Therefore, it is possible to more reliably prevent dust from clogging the siphon conduit 1a and the siphon tube 8. it can.
[0040]
The upper surface of the eaves gutter bottom 1e is slightly inclined so that the height gradually decreases from the leading edge side to the trailing edge side, so that the rainwater flowing into the eaves gutter 1 remains in the siphon conduit 1a without remaining from the water suction port 1g. It is designed to flow to. If rainwater remains on the bottom 1e of the eaves gutter, the appearance when looking down from the upper floor deteriorates, but if the rainwater flows into the siphon conduit 1a without leaving the rainwater as described above, a good appearance can be maintained. .
[0041]
As shown in FIGS. 15 and 16, the connection point of the siphon tube 8 is a threaded socket 1 m having a thick rear plate 1 d at the bottom of the eaves gutter, a hole 1 k being opened from the rear, a tap being cut, and a male screw formed at the end. Is screwed into the hole 1k, the end of the siphon tube 8 is fitted and connected to the screwed socket 1m, and the drainer 1n is externally fitted to the siphon tube 8. As shown in FIG. 20, the draining member 1n is formed in an open annular shape with a part cut out so that the siphon tube 8 can be externally fitted to the tube 8 after the siphon tube 8 is screwed and connected to the socket 1m. Has become. It should be noted that the tap may not be cut in the hole 1k in advance, and the screw may be screwed into the screw socket 1m while cutting the tap.
[0042]
As shown in FIGS. 14, 15 and 16, a rectangular cleaning port 1p is provided on the upper surface of the siphon tube connecting portion of the siphon conduit 1a, and a rectangular cap 1q is attached to the cleaning port 1p. . The cap 1q is made of rubber and has an insertion port 1r formed on the back surface. The insertion port 1r is fitted airtightly and detachably by fitting the insertion port 1r into the cleaning port 1p. Therefore, by removing the cap 1q and inserting a linear cleaning tool or the like from the cleaning port 1p, the siphon tube 8 and the siphon conduit 1a at the bottom of the eaves gutter can be easily cleaned.
[0043]
The siphon tube 8 serving as a vertical siphon pipe is a flexible tube made of a soft synthetic resin, synthetic rubber, or the like, and as shown in FIG. From the back side of the eaves 23, it is connected to an outdoor underground rain water sump 26 through a hollow portion 25 between the house outdoor wall material 21 and the inner wall material 24 on the back side. Therefore, since the siphon tube 8 is not exposed outside the house, the appearance of the house can be improved.
[0044]
Even if the siphon tube 8 is passed through the hollow portion 25 between the house exterior wall material 21 and the interior wall material 24 as described above, the rainwater is drained by the drainage member 1n, and the rainwater is prevented from entering the back side of the eaves sky 23. Does not occur. In particular, when the drainage member 1n is attached and fixed so as to close the hole of the gable plate 22 through which the siphon tube 8 passes, it is possible to more reliably prevent rainwater from entering. Further, it is desirable that the siphon tube 8 is passed through the hollow portion 25 close to the house outdoor wall material 21, and in such a case, the temperature difference between the temperature of the air surrounding the siphon tube 8 and the outside air temperature is reduced, so that the siphon tube 8 Even when rainwater flows down in the inside 8, dew condensation hardly occurs. Also, the lower end of the siphon tube 8 may be connected to a rainwater penetration trench pipe (not shown) or the like without connecting to the rainwater trough 26. Further, the above-mentioned siphon tube 8 and the siphon tube 8 from another eaves gutter may be connected together to one rainwater trough 26. Thus, when a plurality of siphon tubes 8 are connected to one rainwater trough 26, By reducing the number of rainwater tanks 26, the construction of drainage pipes can be reduced.
[0045]
In FIG. 13, reference numeral 27 denotes a heat insulating material filled in the hollow portion 25 of the house outdoor wall material 21 and the inner wall material 24.
[0046]
In the siphon type rainwater drainage device configured as described above, in the case of light rain, the rainwater flowing into the eaves gutter 1 from the roof 20 passes through the dust removal cover 1h, and the siphon pipes 1a from the water intakes 1g of the eaves gutter bottom 1e. , And falls naturally in the siphon tube 8 to be drained. When the amount of inflow into the siphon pipe 1a increases during heavy rain, and the siphon pipe 1a and the siphon tube 8 are filled with rainwater, the siphon action causes the rainwater to flow at a flow rate several times that of the naturally falling drainage. A large amount of rainwater drains down the road 1a and the siphon tube 8 very efficiently. In particular, since the siphon type rainwater drainage device has a large difference in height between the upper end and the lower end of the siphon tube 8 and a high flow rate of rainwater, the drainage capacity is sufficient even with one siphon pipe 1a and one siphon tube 8. is there.
[0047]
Moreover, the appearance is improved because the siphon tube 8 is not exposed to the outside, and the vertical siphon conduit can be easily formed simply by disposing the siphon tube 8, so that the workability is good and the cost is further reduced. be able to.
[0048]
In this embodiment, a flexible tube is used as the siphon tube 8, but a hard tube may be used. Further, a hole was formed in the rear plate of the eaves gutter 1. A hole was made in the lower surface of the siphon conduit 1a at the bottom of the eaves gutter, and a screw-in socket 1m was screwed into the opening at the bottom to insert a flexible tube or hard tube. The pipes may be connected and arranged along the outer surface or the inner surface of the outer wall material 21.
[0049]
FIG. 21 is a sectional view of a principal part of a siphon type rainwater drainage device according to still another embodiment of the present invention.
[0050]
In this siphon type rainwater drainage device, the bottom 1e of the eaves gutter 1 has a single-layer structure instead of a double structure, and a single siphon conduit 1a is formed on the lower surface along the rear edge of the bottom 1e. Other configurations are the same as those of the above-described siphon type rainwater drainage device of FIG. 13, and therefore, in FIG. 21, the same members are denoted by the same reference numerals, and description thereof is omitted.
[0051]
Needless to say, such a siphon type rainwater drainage device also has the same operation and effect as the above-described siphon type rainwater drainage device.
[0052]
【The invention's effect】
As is clear from the above description, the siphon type rainwater drainage device of the present invention can drain a large amount of rainwater extremely efficiently by the siphon action when heavy rain occurs, and furthermore, the eaves gutter can be downsized. In addition, since it is possible to increase the interval between the vertical siphon pipes and to dispose the vertical siphon pipe behind the wall material outside the house so that the vertical siphon pipes are not visible, it is possible to improve the appearance of the house, This has the effect of reducing the construction cost.
[Brief description of the drawings]
FIG. 1 is an overall view of a siphon type rainwater drainage device according to one embodiment of the present invention.
FIG. 2 is a plan view of an eaves gutter of the apparatus.
FIG. 3 is a cross-sectional view of the eaves gutter.
FIG. 4 is a plan view showing a connecting portion between the upper part and the eave gutter of the same device.
FIG. 5 is a front view of the connection portion.
FIG. 6 is a perspective view of the same.
7A is a sectional view taken along line AA of FIG. 6, and FIG. 7B is a sectional view taken along line BB of FIG.
FIG. 8 is a front view of a part where the eaves gutter, the upper joint, the torsion joint, and the elbow joint of the apparatus are connected.
9 (a) is a plan view, FIG. 9 (b) is a front view, FIG. 9 (c) is a right side view, and FIG. 9 (d) is a bottom view.
FIG. 10 is a perspective view of the elbow joint.
FIG. 11 is a perspective view of a gutter member of the apparatus.
FIG. 12 is a perspective view of a conversion joint of the device.
FIG. 13 is an overall view of a siphon type rainwater drainage device according to another embodiment of the present invention.
FIG. 14 is a plan view of an eaves gutter of the apparatus.
FIG. 15 is an enlarged sectional view taken along line CC of FIG. 14;
FIG. 16 is an enlarged exploded cross-sectional view taken along line CC of FIG. 14;
FIG. 17 is an enlarged partial plan view of the eaves gutter.
FIG. 18 is an enlarged sectional view taken along line DD of FIG. 14;
19 is an enlarged exploded sectional view taken along line DD of FIG.
FIG. 20 is a perspective view of a draining ring of the device.
FIG. 21 is a sectional view of a main part of a siphon type rainwater drainage device according to still another embodiment of the present invention.
[Explanation of symbols]
1 eave gutter
1a Siphon pipeline
1e eaves gutter bottom
1g water intake
1h Garbage cover
1p cleaning mouth
1q cap
Z water absorption zone
2 Jogo
2a Siphon T-shaped merging line
3 Torsion joint
3a Short siphon conduit
4 Elbow joint
4a Siphon curved pipe
5 Hard gutter members
5a Siphon straight pipe
8 siphon tube
21 House outdoor wall material
23 eaves
24 Interior wall materials
25 hollow
26 Rainwater

Claims

A vertical siphon is provided at the bottom of the eaves gutter along the entire length of the eaves gutter, and a water inlet is provided from the inside of the eaves gutter to the siphon conduit, and is provided vertically along the outer wall of the house. A siphon type rainwater drainage device, wherein an upper end of a pipe is connected to a siphon pipe of the eaves gutter.

The siphon-type rainwater drainage device according to claim 1, wherein an opening area of the siphon conduit at the bottom of the eaves gutter and a vertical siphon conduit along the outer wall material is ² to 20 cm2.

The siphon type rainwater drainage device according to claim 1, wherein a dust cover is attached to the water inlet.

A plurality of siphon pipes are provided in parallel at the bottom of the eaves gutter, and the eaves gutter is divided into the same number of water absorption zones as the siphon pipes over the entire length, and a water intake opening to each siphon pipe is provided in each siphon pipe. The siphon type rainwater drainage device according to any one of claims 1 to 3, which is provided in a corresponding water absorption zone.

The same number of siphon T-type merging lines as the siphon lines at the bottom of the eaves gutter were formed in parallel, and the same number of siphon short lines as the siphon lines at the bottom of the eaves gutter were twisted in parallel and 90 °. An elbow joint formed with the same number of siphon bent pipes as the siphon pipes at the bottom of the eaves gutter in parallel, and a hard gutter member formed with the same number of siphon straight pipes as the siphon pipes at the bottom of the eaves gutter in parallel. The same number of vertical siphon pipes as the siphon pipes at the bottom of the eaves gutter are provided, and each vertical siphon pipe is connected to the bottom of the eaves gutter by connecting The siphon type rainwater drainage device according to claim 4, which is connected to a siphon conduit.

A single siphon pipe is provided at the bottom of the eaves gutter, and the upper end of the flexible siphon tube, which becomes a vertical siphon pipe, is connected to the siphon pipe at the bottom of the eaves gutter, and the position of the water intake port is connected to the siphon tube. The siphon type rainwater drainage device according to any one of claims 1 to 3, wherein the siphon type rainwater drainage device is displaced from the location to both longitudinal sides of the eaves gutter.

7. The siphon type rainwater drainage device according to claim 6, wherein a cleaning port is formed on an upper surface of a siphon tube connection portion of a siphon conduit provided at a bottom portion of the eaves gutter, and a cap is detachably attached to the cleaning port.

The siphon type rainwater drainage device according to claim 6 or 7, wherein the siphon tube is connected to the underground rainwater trough from the back side of the eaves sky through a hollow portion with the inner wall material on the back side of the house outdoor wall material.