JP4734744B2

JP4734744B2 - Ventilation damper

Info

Publication number: JP4734744B2
Application number: JP2001101895A
Authority: JP
Inventors: 浩史山本
Original assignee: Oiles Eco Corp
Current assignee: Oiles Eco Corp
Priority date: 2001-03-30
Filing date: 2001-03-30
Publication date: 2011-07-27
Anticipated expiration: 2021-03-30
Also published as: JP2002303447A

Description

【０００１】
【発明の属する技術分野】
本発明は、建物、特に戸建住宅又は集合住宅において部屋上部等の換気口に取付けられる換気ダンパに関する。
【０００２】
【発明が解決しようとする課題】
通常、この種の換気ダンパでは、通路を規定するフレーム内に閉鎖部材が回動自在に配され、閉鎖部材の回動により通路の開度を決定して、通路を介する通気の程度を制御するようにしている。
【０００３】
ところで、換気ダンパでは、通路を開放している場合に屋外で強風が生じると、この強風が通路を介して部屋内に吹き出す虞がある。この強風に基づく吹き出しは、部屋内の居住者等に不快感を与えると共に埃及び場合により吹き出しに伴った砂塵等を部屋内に舞い上げることになる。
【０００４】
そこで、斯かる換気ダンパでは、屋外で吹く強風等が室内に吹き込まないように、風の強弱に応答して閉鎖部材を回動させて通路を開閉させることが好ましいのであるが、風の強弱による風圧を電気的に検出する風圧センサを屋外に設けて、この風圧センサからの検出電気信号でもって閉鎖部材を回動させるようにする場合には、風の強弱に対して即時に応答して閉鎖部材を回動させないと、屋外から部屋内への強風の完全な吹き込みを防止し難い。
【０００５】
閉鎖部材の回動の速度応答性を向上させるためには、高速応答性の高出力の大型の電動モータ等の駆動装置を必要とする結果、高価になる上に大型となって部屋上部等の換気口にコンパクトに取付け難くなり、加えて、屋外に設ける風圧センサは直接に風雨等に曝されるためにそれの定期的な保守が必要となるために、この点からも風圧センサを用いた換気ダンパは必ずしも満足できるものではない。
【０００６】
本発明は、前記諸点に鑑みてなされたものであって、その目的とするところは、電気的なセンサを必要とすることなしに屋外で吹く風に迅速に応答して通路を開閉できて、しかも、それ程占有スペースを必要としない小型に構成できる換気ダンパを提供することにある。
【０００７】
【課題を解決するための手段】
本発明の第一の態様の換気ダンパは、建物内外を連通する通路を画成する枠手段と、通路に回転自在に配されていると共に通路を開閉する通路開閉手段と、通路に一定以上の速度の空気流が生じる際に、この空気流により通路を閉鎖するように通路開閉手段を回動させる羽根手段とを具備しており、ここで、通路開閉手段は、通路を開放するように常時回動付勢されている。
【０００８】
第一の態様の換気ダンパでは、枠手段によって通路を画成し、通路に一定以上の速度の空気流が生じる際に、通路を閉鎖するように通路開閉手段を羽根手段により回動させるようになっているために、電気的なセンサを必要とすることなしに屋外で吹く風に迅速に応答して通路を開閉できて、しかも、高出力の電動モータ等の駆動装置を必要としない結果、それ程占有スペースを必要としなく小型に構成できる。
【０００９】
本発明では通路は、一個でもよいのであるが、好ましい例では、その第二の態様の換気ダンパのように、主通路と副通路とを具備しており、ここで、通路開閉手段は、主通路を開放するように常時回動付勢されており、羽根手段は、副通路に一定以上の速度の空気流が生じる際に、主通路を閉鎖するように通路開閉手段を回動させるようになっていてもよい。
【００１０】
また、副通路も一個でもよいのであるが、その第三の態様の換気ダンパのように、主通路を挟んで主通路の両側に設けられていると、通路開閉手段を容易に回動できるので、好ましい。
【００１１】
本発明の通路開閉手段は、好ましい例では、その第四及び第五の態様の換気ダンパのように、回転自在軸と、この回転自在軸に固着された閉鎖部材とを具備しており、この場合、閉鎖部材は、その第四の態様の換気ダンパのように、通路を開放するように常時付勢されるべく、その自重により回転モーメントを生じさせるように回転自在軸に固着されていても、その第五の態様の換気ダンパのように、その自重により通路を開放するように常時付勢されるように、その重心が回転自在軸の軸心から偏心して回転自在軸に固着されていてもよい。
【００１２】
通路を開放するように通路開閉手段を常時回動付勢するためには、上記の態様のように構成してもよいのであるが、本発明は上記の態様に限らないのであって、閉鎖部材若しくは回転自在軸に重錘を取付け又はコイルばね等の弾性手段を回転自在軸に連結して、これにより通路を開放するように通路開閉手段を常時回動付勢するようにしてもよい。
【００１３】
本発明の羽根手段は、好ましい例では、その第六及び第七の態様の換気ダンパのように、通路開閉手段によって通路が開放される際には通路の空気流を受容し、通路開閉手段によって通路が閉鎖される際には通路を閉鎖するように、通路に張り出して回転自在軸及び閉鎖部材のうちの少なくとも一方に固着された羽根を有している。
【００１４】
斯かる羽根は、一枚でもよいが２枚以上の複数枚であってもよく、また、平板状の形状を有していてもよいが、通路の空気流を効果的に受容するように、湾曲状の形状を有しているのが好ましい。
【００１５】
本発明では、羽根手段によってのみ通路開閉手段が回動されて通路閉鎖を行うようになっていてもよいが、その第八の態様の換気ダンパのように、通路開閉手段を回動させる回動手段を具備せしめて、通路開閉手段による通路の閉鎖を回動手段により強制的に行わせるようにしてもよい。
【００１６】
斯かる回動手段を設けることにより、通路を半開状態、全開状態及び全閉状態にした位置に通路開閉手段を回動でき、而して、換気を種々の開閉状態（開度）でできると共に適温にされた部屋の空気を逃がさないようにもできる上に、半開状態及び全開状態における強風に基づく部屋内への空気の吹き出しをも防止できる。
【００１７】
好ましい例では、回動手段は、本発明の第九の態様の換気ダンパのように、回動力発生手段と、この回動力発生手段により発生された回動力を通路開閉手段に伝達する伝達手段とを具備しており、伝達手段は、通路開閉手段が通路開放位置に回動された際に、通路閉塞位置に向かう通路開閉手段の自由回動を許容するようになっている。
【００１８】
通路閉塞位置に向かう通路開閉手段の自由回動を許容する伝達手段を具備した回動手段によれば、半開状態及び全開状態における強風に基づく部屋内への空気の吹き出しを効果的に防止できる。回動力発生手段としては、電動モータをその一例として挙げることができるが、これに代えて又はこれと共に、操作レバー等の手動操作可能な機構であってもよい。
【００１９】
本発明の第十の態様の換気ダンパのように、枠手段は、主通路を画成すべく、一対の側壁部材と、一対の側壁部材を橋絡した一対の横長部材とを有しており、一対の横長部材の夫々には横長のシール部材が設けられており、一対の側壁部材の夫々には縦長のシール部材が設けられており、通路開閉手段は、通路閉鎖位置に回動された際に、横長及び縦長のシール部材に当接するようになっている。
【００２０】
枠手段及び通路開閉手段が第十の態様のように構成されていると、通路の閉鎖を、高度な水密性及び気密性をもって行い得、通路の閉鎖状態での風雨の部屋内への侵入を確実に防ぎ得て、空調されて適温にされた空気の部屋外部への漏出を効果的に防止できる。
【００２１】
次に本発明及びその実施の形態を、図に示す好ましい例に基づいて更に詳細に説明する。なお、本発明はこれら例に何等限定されないのである。
【００２２】
【発明の実施の形態】
図１から図５において、本例の換気ダンパ１は、建物内外２及び３を連通する通路であって主通路４並びに副通路５及び６を具備した通路を画成する枠手段７と、枠手段７の主通路４にＡ及びＢ方向に回転自在に配されていると共に主通路４を開閉する通路開閉手段８と、枠手段７の副通路５及び６に回転自在に配されていると共に副通路５及び６の空気流によって回動される羽根手段９及び１０と、通路開閉手段８による主通路４の閉鎖を強制的に行わせるべく、通路開閉手段８を回動させる回動手段１１とを具備している。
【００２３】
枠手段７は、主通路４を画成すべく、一対の左右の側壁部材２１及び２２と、一対の側壁部材２１及び２２を橋絡した一対の中空の上下の横長部材２３及び２４とを有していると共に、一対の側壁部材２１及び２２と協働して副通路５及び６を画成すべく、側壁部材２１側に配された側壁部材２５と、側壁部材２１及び側壁部材２５を橋絡した一対の中空の上下部材２６及び２７と、側壁部材２２側に配された側壁部材２８と、側壁部材２２及び側壁部材２８を橋絡した一対の中空の上下部材２９及び３０とを具備している。
【００２４】
一対の側壁部材２１及び２２、横長部材２３及び２４、側壁部材２５、上下部材２６及び２７、側壁部材２８並びに上下部材２９及び３０の夫々は、ねじ等に互いに連結、固着されて一体化されている。
【００２５】
一対の横長部材２３及び２４の夫々にはゴム等の弾性材からなる横長のシール部材３５及び３６が当該一対の横長部材２３及び２４の夫々に嵌着されて設けられていると共に同じくゴム等の弾性材からなる縦長のシール部材３７及び３８が当該一対の側壁部材２１及び２２の夫々の段差面３９及び４０に接着剤等により接着されて設けられている。
【００２６】
本例の副通路５及び６は、主通路４を挟んで主通路４の両側に同様にして設けられており、副通路５及び６の夫々に、互いに同様の羽根手段９及び１０の夫々が配されている。
【００２７】
通路開閉手段８は、回転自在軸４５と、回転自在軸４５に固着されていると共に主通路４に配された横長の中空の閉鎖部材４６とを具備している。
【００２８】
回転自在軸４５は、側壁部材２１、２２、２５及び２８を貫通して配されており、当該側壁部材２１、２２、２５及び２８に軸受４７を介してＡ及びＢ方向に回転自在に支持されている。
【００２９】
閉鎖部材４６は、回転自在軸４５の軸心５０に対して点対称に円弧面５１及び５２を有する円弧部５３及び５４と、軸心５０の片側において円弧部５３及び５４間に配された連結部５５とを一体的に具備しており、閉鎖部材４６は、連結部５５によりその重心Ｇが回転自在軸４５の軸心５０から偏心して回転自在軸４５に固着されている。斯かる重心Ｇの軸心５０からの偏心により、閉鎖部材４６は、主通路４を開放するように、即ちＢ方向に常時回動付勢されており、換言すれば、主通路４を開放するように、その自重によりＢ方向の回転モーメントを生じさせるように回転自在軸４５に固着されている。
【００３０】
通路開閉手段８は、閉鎖部材４６が通路閉鎖位置（図６に示す位置）に回動された際に、閉鎖部材４６の先端部が、即ち本例では、円弧部５３及び５４の円弧面５１及び５２の夫々の先端部が横長のシール部材３５及び３６の夫々に当接し、閉鎖部材４６の横方向の両端部が、即ち本例では、円弧部５３及び５４の円弧面５１及び５２の夫々の横方向の両端部が縦長のシール部材３７及び３８の夫々に当接するようになっている。
【００３１】
羽根手段９と羽根手段１０とは、互いに同様に構成されているので、以下、羽根手段９について詳述すると、羽根手段９は、通路開閉手段８の閉鎖部材４６によって主通路４が開放される際（図２に示す状態の際）には、副通路５の建物内２に向かう空気流Ｘを受容し、通路開閉手段８の閉鎖部材４６によって主通路４が閉鎖される際（図６に示す状態の際）には副通路５を閉鎖するように、副通路５に張り出して回転自在軸４５に固着された羽根６１を有している。
【００３２】
本例の羽根手段９は、三枚の羽根６１を有しているが、これに代えて、図８及び図９に示すように、一枚の羽根６１を有していてもよく、この場合でも、羽根６１は、通路開閉手段８の閉鎖部材４６によって主通路４が開放される際（図２に示す状態の際）には図８に示すように副通路５の建物内２に向かう空気流Ｘを受容し、通路開閉手段８の閉鎖部材４６によって主通路４が閉鎖される際（図６に示す状態の際）には図９に示すように副通路５を閉鎖するように、副通路５に張り出して回転自在軸４５に固着されている。
【００３３】
羽根手段９は、副通路５に一定以上の速度の建物外３から建物内２に向かう空気流Ｘが生じる際に、回転自在軸４５をＡ方向に回転させて、回転自在軸４５のＡ方向の回転を介して主通路４を閉鎖するように通路開閉手段８の閉鎖部材４６を回動させるようになっている。
【００３４】
回動手段１１は、回動力発生手段としての電動モータ７１と、電動モータ７１により発生された回動力を通路開閉手段８に伝達する伝達手段７２とを具備している。
【００３５】
電動モータ７１は支持板７３に支持されており、支持板７３は基台７４に溶接又はねじ等により取付けられており、基台７４は側壁部材２８に溶接又はねじ等により固着されている。
【００３６】
伝達手段７２は、電動モータ７１の出力回転軸７５に固着されている小径の平歯車７６と、平歯車７６に噛合うと共に、支持板７３に軸部材７７及び軸受７８を介してＡ及びＢ方向に回転自在に支持された大径の平歯車７９と、軸部材７７に取付けられていると共に円弧スリット８１及び８２を有した円板８３と、回転自在軸４５の一端に固着された円板８４と、円板８４に植設されていると共に自由端の夫々が円弧スリット８１及び８２の夫々に配された係合ピン８５及び８６とを具備している。
【００３７】
なお、円板８３には、閉塞された円弧スリット８１及び８２の代わりに、円板８３の外縁側で開放された円弧スリット（凹所）を設けて、斯かる円弧スリット（凹所）に係合ピン８５及び８６の自由端が配されるようにしてもよい。また、円弧スリット８１及び８２を円板８４に、係合ピン８５及び８６を円板８３に夫々設けてもよい。
【００３８】
回動手段１１は、主通路４を開放する際には、電動モータ７１を作動させて平歯車７６及び平歯車７９を介して減速して円板８３をＢ方向に回転させ、図２に示すように閉鎖部材４６が主通路４の開放位置（全開位置）に回動された際に、図５に示すように係合ピン８５及び８６の夫々が円弧スリット８１及び８２の夫々の一端８７で円板８３に当接する一方、係合ピン８５及び８６の夫々が円弧スリット８１の夫々の他端８８に自由に移動できるようにし、主通路４を強制的に閉鎖する際には、電動モータ７１を前記と逆に作動させて平歯車７６及び平歯車７９を介して減速して円板８３を図７に示すようにＡ方向に回転させ、円板８３のＡ方向の回転により係合ピン８５及び８６を介して円板８４を同じくＡ方向に回転させ、円板８４のＡ方向の回転により回転自在軸４５を介して閉鎖部材４６を図６に示すように主通路４の閉鎖位置（全閉位置）に回動させるようになっている。
【００３９】
電動モータ７１の作動、作動停止は、他に設けられた操作スイッチ、閉鎖部材４６の回動角を検出する検出器等により行われる。
【００４０】
図２に示すように閉鎖部材４６が主通路４の開放位置（全開位置）に回動されている際に、図５に示すように係合ピン８５及び８６が円弧スリット８１及び８２の他端８８に自由に移動できるように伝達手段７２がなっているために、閉鎖部材４６はＡ方向に回動できるようになっている。このようにして本例の伝達手段７２は、通路開閉手段８が図２に示すように通路開放位置に回動された際に、図６に示すような通路閉塞位置に向かう通路開閉手段８の自由回動、即ちＡ方向の自由回動を許容するようになっている。
【００４１】
図２に示すように閉鎖部材４６が主通路４の開放位置（全開位置）に回動されている際に、副通路５に一定以上の速度の建物外３から建物内２に向かう空気流Ｘが生じると、羽根手段９が回転自在軸４５をＡ方向に回転させて、回転自在軸４５のＡ方向の回転を介して閉鎖部材４６を回転させて主通路４を閉鎖部材４６により閉鎖し、当該空気流Ｘが副通路５に生じなくなると、閉鎖部材４６は、その自重によるＢ方向の回転モーメントでもって主通路４の開放位置（全開位置）に自然と回動される。
【００４２】
斯かる本例の換気ダンパ１では、枠手段７によって主通路４並びに副通路５及び６を画成し、副通路５及び６に羽根手段９及び１０を配し、副通路５及び６に一定以上の速度の空気流Ｘが生じる際に、主通路４を閉鎖するように通路開閉手段８を羽根手段９及び１０によりＡ方向に回動させるようになっているために、電気的なセンサを必要とすることなしに屋外で吹く風に迅速に応答して主通路４を開閉できて、しかも、高出力の電動モータ等の駆動装置を必要としない結果、それ程占有スペースを必要としなく小型に構成できる。
【００４３】
加えて換気ダンパ１では、回動手段１１により主通路４を半開状態、全開状態及び全閉状態にした位置に通路開閉手段８を回動でき、而して、換気を種々の開閉状態（開度）でできると共に適温にされた部屋の空気を逃がさないようにもできる上に、半開状態及び全開状態における強風に基づく部屋内への空気の吹き出しをも防止できる。
【００４４】
また換気ダンパ１では、通路閉塞位置に向かう通路開閉手段８の自由回動を許容する伝達手段７２を具備しているために、半開状態及び全開状態における強風に基づく部屋内２への空気の吹き出しを効果的に防止できる。
【００４５】
更に換気ダンパ１では、主通路４の閉鎖を、高度な水密性及び気密性をもって行い得、主通路の閉鎖状態での風雨の建物内２への侵入を確実に防ぎ得て、空調されて適温にされた空気の建物外３への漏出を効果的に防止できる。
【００４６】
また上記の例の換気ダンパ１では、建物内外２及び３を連通する通路を、主通路４並びに副通路５及び６を具備して構成したが、図１０及び図１１に示すように、側壁部材２５、上下部材２６及び２７、側壁部材２８並びに上下部材２９及び３０を省いて、建物内外２及び３を連通する通路９１を側壁部材２１及び２２、横長部材２３及び２４でもって画成し、建物内２に向かう一定以上の速度の空気流Ｘが通路９１に生じる際に、空気流Ｘにより通路９１を閉鎖するように通路開閉手段８を回動させる羽根手段９を、閉鎖部材４６の横方向両端に固着された一対の羽根９２及び９３を具備して構成してもよい。
【００４７】
また図１０から図１２に示すように、閉鎖部材４６のＡ及びＢ方向の一定以上の回動を規制する規制手段１０１を具備して換気ダンパ１を構成してもよく、規制手段１０１は、略円形の固定部材１０２と、固定部材１０２と軸部材７７とに設けられていると共に、閉鎖部材４６による通路９１の開閉において互いに係合する係合手段１０３とを具備している。
【００４８】
係合手段１０３は、固定部材１０２に形成された円弧状の切欠き１０５と、軸部材７７に一体的に形成されていると共に切欠き１０５に配された突起１０６とを具備している。固定部材１０２は支持板７３に固着されており、軸部材７７は、固定部材１０２を当該固定部材１０２に対してＡ及びＢ方向に回転自在になって貫通して伸びている。
【００４９】
規制手段１０１は、電動モータ７１により閉鎖部材４６がＡ方向に回転されて、図６に示すように通路９１が閉鎖されると、突起１０６が切欠き１０５の一端を画定する固定部材１０２の面１１１に当接し、軸部材７７のＡ方向のそれ以上の回転を阻止し、同様に電動モータ７１により閉鎖部材４６がＢ方向に回転されて、図２に示すように通路９１が開放されると、突起１０６が切欠き１０５の他端を画定する固定部材１０２の面１１２に当接し、軸部材７７のＢ方向のそれ以上の回転を阻止するようになっている。
【００５０】
斯かる規制手段１０１を設けることにより、電動モータ７１の出力回転軸７５の慣性等に影響されることなしに、横長のシール部材３５及び３６に適切に弾性変形を生じさせて閉鎖部材４６を当接させることができる。
【００５１】
なお、図１１に示すように横長部材２３を、円弧部１２１をもって構成してもよい。
【００５２】
【発明の効果】
本発明によれば、電気的なセンサを必要とすることなしに屋外で吹く風に迅速に応答して通路を開閉できて、しかも、それ程占有スペースを必要としない小型に構成できる換気ダンパを提供することができる。
【図面の簡単な説明】
【図１】本発明の実施の形態の好ましい一例の横断面説明図である。
【図２】図１に示す例のＩＩ−ＩＩ線矢視断面図である。
【図３】図１に示す例のＩＩＩ−ＩＩＩ線矢視断面図である。
【図４】図１に示す例のＩＶ−ＩＶ線矢視断面図である。
【図５】図１に示す例のＶ−Ｖ線矢視断面図である。
【図６】図１に示す例の動作説明図である。
【図７】図１に示す例の動作説明図である。
【図８】本発明の実施の形態の好ましい他の例の説明図である。
【図９】図８に示す例の動作説明図である。
【図１０】本発明の実施の形態の好ましい他の例の説明図である。
【図１１】図１０に示す例のＸＩ−ＸＩ線矢視断面図である。
【図１２】図１０に示す例のＸＩＩ−ＸＩＩ線矢視図である。
【符号の説明】
１換気ダンパ
２建物内
３建物外
４主通路
５、６副通路
７枠手段
８通路開閉手段
９、１０羽根手段
１１回動手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ventilation damper that is attached to a ventilation opening such as an upper part of a room in a building, particularly a detached house or an apartment house.
[0002]
[Problems to be solved by the invention]
Usually, in this type of ventilation damper, a closing member is rotatably disposed in a frame defining the passage, and the degree of ventilation through the passage is controlled by determining the opening degree of the passage by the rotation of the closing member. I am doing so.
[0003]
By the way, in the ventilation damper, when a strong wind is generated outdoors when the passage is open, the strong wind may blow out into the room through the passage. The balloon based on the strong wind gives unpleasant feeling to the residents in the room and also causes dust and, if necessary, sand dust accompanying the balloon to soar into the room.
[0004]
Therefore, in such a ventilation damper, it is preferable to open and close the passage by turning the closing member in response to the strength of the wind so that strong winds blowing outdoors do not blow into the room. When a wind pressure sensor that electrically detects the wind pressure is installed outdoors and the closing member is rotated by a detection electrical signal from the wind pressure sensor, the closure is immediately responded to the strength of the wind. If the member is not rotated, it is difficult to prevent complete blowing of strong wind from the outside into the room.
[0005]
In order to improve the speed responsiveness of the rotation of the closing member, a drive device such as a large-sized electric motor with high response and high output is required. In addition, it is difficult to install the air pressure sensor compactly in the ventilation opening. In addition, since the wind pressure sensor installed outdoors is directly exposed to wind and rain, it must be regularly maintained. Ventilation dampers are not always satisfactory.
[0006]
The present invention has been made in view of the above points, and its object is to quickly open and close a passage in response to wind blowing outdoors without the need for an electrical sensor, And it is providing the ventilation damper which can be comprised in a small size which does not require an occupation space so much.
[0007]
[Means for Solving the Problems]
A ventilation damper according to a first aspect of the present invention includes a frame means that defines a passage communicating inside and outside a building, a passage opening / closing means that is rotatably disposed in the passage and that opens and closes the passage, and a certain amount of passage in the passage. Vane means for rotating the passage opening / closing means so as to close the passage by the air flow when a velocity air flow is generated, wherein the passage opening / closing means is always open so as to open the passage. It is urged to rotate.
[0008]
In the ventilation damper of the first aspect, the passage is defined by the frame means, and the passage opening / closing means is rotated by the blade means so as to close the passage when an air flow at a speed higher than a certain level is generated in the passage. As a result, the passage can be opened and closed quickly in response to wind blowing outdoors without the need for an electrical sensor, and a drive device such as a high-output electric motor is not required. It can be made compact without requiring so much space.
[0009]
In the present invention, the number of passages may be one. However, in a preferred example, like the ventilation damper of the second aspect, the passage includes a main passage and a sub passage. The blade means is constantly urged to rotate so as to open the passage, and the blade means rotates the passage opening / closing means so as to close the main passage when an air flow of a certain speed or more is generated in the sub passage. It may be.
[0010]
In addition, a single sub-passage may be used, but if it is provided on both sides of the main passage across the main passage, as in the ventilation damper of the third aspect, the passage opening / closing means can be easily rotated. ,preferable.
[0011]
In a preferred example, the passage opening / closing means of the present invention includes a rotatable shaft and a closing member fixed to the rotatable shaft, like the ventilation dampers of the fourth and fifth aspects. In this case, like the ventilation damper of the fourth aspect, the closing member may be fixed to the rotatable shaft so as to generate a rotational moment by its own weight so as to be always urged to open the passage. As in the ventilation damper of the fifth aspect, the center of gravity is eccentric from the axis of the rotatable shaft and is fixed to the rotatable shaft so as to be always biased to open the passage by its own weight. Also good.
[0012]
In order to constantly rotate and bias the passage opening / closing means so as to open the passage, it may be configured as in the above aspect, but the present invention is not limited to the above aspect, and the closing member Alternatively, a weight may be attached to the rotatable shaft, or an elastic means such as a coil spring may be connected to the rotatable shaft so that the passage opening / closing means is always urged to rotate so as to open the passage.
[0013]
In a preferred example, the blade means of the present invention, like the ventilation dampers of the sixth and seventh aspects, receives the air flow in the passage when the passage is opened by the passage opening / closing means, and the passage opening / closing means In order to close the passage when the passage is closed, the blade has a blade protruding from the passage and fixed to at least one of the rotatable shaft and the closing member.
[0014]
Such a blade may be a single sheet, or may be a plurality of two or more sheets, and may have a flat plate shape, but in order to effectively receive the air flow in the passage, It preferably has a curved shape.
[0015]
In the present invention, the passage opening / closing means may be rotated only by the blade means to close the passage. However, like the ventilation damper of the eighth aspect, the rotation is performed to rotate the passage opening / closing means. Means may be provided, and the passage may be forcibly closed by the turning means by the passage opening / closing means.
[0016]
By providing such turning means, the passage opening / closing means can be turned to a position where the passage is in a half-open state, a full-open state and a fully-closed state, and thus ventilation can be performed in various open / close states (openings). It is possible not to let the air in the room at an appropriate temperature escape, and it is also possible to prevent the air from blowing into the room based on the strong wind in the half-open state and the fully-open state.
[0017]
In a preferred example, the rotating means, like the ventilation damper of the ninth aspect of the present invention, is a rotating power generating means, and a transmitting means for transmitting the rotating power generated by the rotating power generating means to the passage opening / closing means. The transmission means allows the passage opening / closing means to freely rotate toward the passage closing position when the passage opening / closing means is turned to the passage opening position.
[0018]
According to the rotation means including the transmission means that allows the passage opening / closing means to freely rotate toward the passage closing position, it is possible to effectively prevent air from being blown into the room due to the strong wind in the half-open state and the fully-open state. An example of the rotational power generation means is an electric motor, but a mechanism that can be manually operated such as an operation lever may be used instead of or together with this.
[0019]
Like the ventilation damper of the tenth aspect of the present invention, the frame means has a pair of side wall members and a pair of horizontally long members bridging the pair of side wall members to define the main passage, Each of the pair of horizontally long members is provided with a horizontally long seal member, and each of the pair of side wall members is provided with a vertically long seal member. When the passage opening / closing means is rotated to the passage closed position, In addition, they are in contact with horizontally long and vertically long seal members.
[0020]
When the frame means and the passage opening / closing means are configured as in the tenth aspect, the passage can be closed with a high degree of watertightness and airtightness, and the entry of wind and rain into the room with the passage closed can be achieved. It can be surely prevented, and the leakage of air that has been air-conditioned and kept at an appropriate temperature can be effectively prevented from leaking out of the room.
[0021]
Next, the present invention and its embodiments will be described in more detail based on preferred examples shown in the drawings. The present invention is not limited to these examples.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5, a ventilation damper 1 of this example includes a frame means 7 that defines a passage that communicates the inside and outside 2 and 3 of a building and includes a main passage 4 and sub-passages 5 and 6; The main passage 4 of the means 7 is rotatably arranged in the A and B directions, and the passage opening and closing means 8 for opening and closing the main passage 4 and the auxiliary passages 5 and 6 of the frame means 7 are rotatably arranged. Rotating means 11 for rotating the passage opening / closing means 8 to forcefully close the main passage 4 by the blade opening / closing means 8 and the blade means 9 and 10 rotated by the air flow in the auxiliary passages 5 and 6. It is equipped with.
[0023]
The frame means 7 has a pair of left and right side wall members 21 and 22 and a pair of hollow upper and lower horizontally long members 23 and 24 that bridge the pair of side wall members 21 and 22 in order to define the main passage 4. In addition, the side wall member 25 arranged on the side of the side wall member 21 and the side wall member 21 and the side wall member 25 are bridged to cooperate with the pair of side wall members 21 and 22 to define the auxiliary passages 5 and 6. A pair of hollow upper and lower members 26 and 27, a side wall member 28 arranged on the side wall member 22 side, and a pair of hollow upper and lower members 29 and 30 bridging the side wall member 22 and the side wall member 28 are provided. .
[0024]
The pair of side wall members 21 and 22, the horizontally long members 23 and 24, the side wall member 25, the upper and lower members 26 and 27, the side wall member 28, and the upper and lower members 29 and 30 are connected and fixed to each other by screws or the like. Yes.
[0025]
Each of the pair of horizontally long members 23 and 24 is provided with a horizontally long seal member 35 and 36 made of an elastic material such as rubber, and is fitted to each of the pair of horizontally long members 23 and 24. Vertically long seal members 37 and 38 made of an elastic material are provided on the step surfaces 39 and 40 of the pair of side wall members 21 and 22 by an adhesive or the like.
[0026]
The sub passages 5 and 6 in this example are provided in the same manner on both sides of the main passage 4 with the main passage 4 in between, and the blade means 9 and 10 similar to each other are provided in each of the sub passages 5 and 6. It is arranged.
[0027]
The passage opening / closing means 8 includes a rotatable shaft 45 and a horizontally long hollow closing member 46 fixed to the rotatable shaft 45 and disposed in the main passage 4.
[0028]
The rotatable shaft 45 is disposed through the side wall members 21, 22, 25 and 28, and is supported by the side wall members 21, 22, 25 and 28 via a bearing 47 so as to be rotatable in the A and B directions. ing.
[0029]
The closing member 46 includes arc portions 53 and 54 having arc surfaces 51 and 52 that are point-symmetric with respect to the axis 50 of the rotatable shaft 45, and a connection disposed between the arc portions 53 and 54 on one side of the axis 50. The closing member 46 is fixed to the rotatable shaft 45 such that the center of gravity G of the closing member 46 is eccentric from the axis 50 of the rotatable shaft 45 by the connecting portion 55. Due to the eccentricity of the center of gravity G from the axis 50, the closing member 46 is always urged to rotate in the B direction, that is, in the B direction, in other words, to open the main passage 4. Thus, it is fixed to the rotatable shaft 45 so as to generate a rotational moment in the B direction by its own weight.
[0030]
When the closing member 46 is turned to the passage closing position (the position shown in FIG. 6), the passage opening / closing means 8 has the tip of the closing member 46, that is, the arc surfaces 51 of the arc portions 53 and 54 in this example. And 52 are respectively in contact with the horizontally long seal members 35 and 36, and both end portions in the lateral direction of the closing member 46, that is, arc surfaces 51 and 52 of the arc portions 53 and 54 in this example, respectively. Both end portions in the horizontal direction are in contact with the vertically long seal members 37 and 38, respectively.
[0031]
Since the blade means 9 and the blade means 10 are configured in the same manner, the blade means 9 will be described in detail below. In the blade means 9, the main passage 4 is opened by the closing member 46 of the passage opening / closing means 8. At the time (in the state shown in FIG. 2), when the main passage 4 is closed by the closing member 46 of the passage opening / closing means 8, the air flow X toward the inside 2 of the sub passage 5 is received (FIG. 6). In the state shown in the figure, the blade 61 extends over the sub-passage 5 and is fixed to the rotatable shaft 45 so as to close the sub-passage 5.
[0032]
The blade means 9 of this example has three blades 61, but instead of this, as shown in FIGS. 8 and 9, it may have a single blade 61, in this case However, when the main passage 4 is opened by the closing member 46 of the passage opening / closing means 8 (in the state shown in FIG. 2), the blades 61 are directed toward the interior 2 of the sub passage 5 as shown in FIG. When the main passage 4 is closed (in the state shown in FIG. 6) when the flow X is received and the closing member 46 of the passage opening / closing means 8 is closed, the auxiliary passage 5 is closed as shown in FIG. It protrudes into the passage 5 and is fixed to the rotatable shaft 45.
[0033]
The blade means 9 rotates the rotatable shaft 45 in the A direction when the air flow X from the outside of the building 3 toward the inside of the building 2 is generated in the auxiliary passage 5 at a certain speed or more. The closing member 46 of the passage opening / closing means 8 is rotated so as to close the main passage 4 through the rotation of.
[0034]
The rotating means 11 includes an electric motor 71 as a rotational power generating means and a transmission means 72 for transmitting the rotational power generated by the electric motor 71 to the passage opening / closing means 8.
[0035]
The electric motor 71 is supported by a support plate 73, and the support plate 73 is attached to the base 74 by welding or screws or the like, and the base 74 is fixed to the side wall member 28 by welding or screws or the like.
[0036]
The transmission means 72 meshes with the small-diameter spur gear 76 fixed to the output rotation shaft 75 of the electric motor 71 and the spur gear 76, and in the A and B directions via the shaft member 77 and the bearing 78 to the support plate 73. A large-diameter spur gear 79 rotatably supported on the shaft, a disc 83 attached to the shaft member 77 and having arc slits 81 and 82, and a disc 84 fixed to one end of the rotatable shaft 45. And engaging pins 85 and 86 that are implanted in the circular plate 84 and are arranged at the free ends of the circular slits 81 and 82, respectively.
[0037]
The disc 83 is provided with an arc slit (recess) opened on the outer edge side of the disc 83 instead of the closed arc slits 81 and 82, and the disc 83 is engaged with the arc slit (recess). The free ends of the mating pins 85 and 86 may be arranged. Further, the arc slits 81 and 82 may be provided on the disc 84 and the engagement pins 85 and 86 may be provided on the disc 83, respectively.
[0038]
When opening the main passage 4, the rotating means 11 operates the electric motor 71, decelerates it via the spur gear 76 and the spur gear 79, and rotates the disk 83 in the B direction, as shown in FIG. Thus, when the closing member 46 is rotated to the open position (full open position) of the main passage 4, the engagement pins 85 and 86 are respectively connected to the one ends 87 of the arc slits 81 and 82 as shown in FIG. 5. The electric motor 71 is used when the main passage 4 is forcibly closed while the engagement pins 85 and 86 are allowed to freely move to the respective other ends 88 of the arc slit 81 while abutting the disc 83. Is operated in the reverse direction to decelerate through the spur gear 76 and spur gear 79 to rotate the disk 83 in the A direction as shown in FIG. 7, and the engagement pin 85 is rotated by the rotation of the disk 83 in the A direction. And the disk 84 is also rotated in the A direction via the And it is adapted to rotate the closure member 46 through a rotatable shaft 45 in the closed position of the main passage 4 as shown in FIG. 6 (fully closed position) by the rotation direction.
[0039]
The electric motor 71 is activated and deactivated by an operation switch provided elsewhere, a detector that detects the rotation angle of the closing member 46, and the like.
[0040]
When the closing member 46 is rotated to the open position (fully open position) of the main passage 4 as shown in FIG. 2, the engagement pins 85 and 86 are the other ends of the arc slits 81 and 82 as shown in FIG. Since the transmission means 72 is provided so that it can be freely moved to 88, the closing member 46 can be rotated in the A direction. In this way, the transmission means 72 of the present example allows the passage opening / closing means 8 to move toward the passage closing position as shown in FIG. 6 when the passage opening / closing means 8 is turned to the passage opening position as shown in FIG. Free rotation, that is, free rotation in the A direction is allowed.
[0041]
As shown in FIG. 2, when the closing member 46 is rotated to the open position (fully opened position) of the main passage 4, the air flow X from the outside 3 of the building toward the inside 2 of the building at a speed equal to or higher than a certain speed is generated in the sub-passage 5. Occurs, the blade means 9 rotates the rotatable shaft 45 in the A direction, rotates the closing member 46 via the rotation of the rotatable shaft 45 in the A direction, and closes the main passage 4 by the closing member 46. When the air flow X is not generated in the sub-passage 5, the closing member 46 is naturally rotated to the open position (fully open position) of the main passage 4 by the rotational moment in the B direction due to its own weight.
[0042]
In the ventilation damper 1 of this example, the main passage 4 and the auxiliary passages 5 and 6 are defined by the frame means 7, the blade means 9 and 10 are arranged in the auxiliary passages 5 and 6, and the auxiliary passages 5 and 6 are constant. Since the passage opening / closing means 8 is rotated in the direction A by the blade means 9 and 10 so as to close the main passage 4 when the air flow X having the above speed is generated, the electric sensor is The main passage 4 can be opened and closed quickly in response to the wind blown outdoors without requiring it, and it does not require a driving device such as a high-power electric motor, so it does not require much space and is compact. Can be configured.
[0043]
In addition, in the ventilation damper 1, the passage opening / closing means 8 can be rotated to a position where the main passage 4 is in a half-open state, a full-open state, and a fully-closed state by the rotation means 11. In addition, it is possible to prevent the air in the room at a suitable temperature from escaping, and to prevent the air from being blown into the room based on the strong wind in the half-open state and the full-open state.
[0044]
Further, since the ventilation damper 1 includes the transmission means 72 that allows the passage opening / closing means 8 to freely rotate toward the passage closing position, air is blown out into the room 2 based on the strong wind in the half-open state and the fully-open state. Can be effectively prevented.
[0045]
Furthermore, in the ventilation damper 1, the main passage 4 can be closed with a high degree of watertightness and airtightness, and it is possible to reliably prevent the entry of wind and rain into the building 2 when the main passage is closed. It is possible to effectively prevent leaked air from leaking out of the building 3.
[0046]
Further, in the ventilation damper 1 of the above example, the passage communicating the inside and outside 2 and 3 of the building is configured to include the main passage 4 and the sub passages 5 and 6, but as shown in FIGS. 10 and 11, the side wall member 25, the upper and lower members 26 and 27, the side wall member 28 and the upper and lower members 29 and 30 are omitted, and a passage 91 communicating with the inside and outside 2 and 3 of the building is defined by the side wall members 21 and 22 and the horizontally long members 23 and 24. When the air flow X at a certain speed or more toward the inner side 2 is generated in the passage 91, the blade means 9 that rotates the passage opening / closing means 8 to close the passage 91 by the air flow X is provided in the lateral direction of the closing member 46. You may comprise and comprise a pair of blade | wing 92 and 93 fixed to both ends.
[0047]
Further, as shown in FIGS. 10 to 12, the ventilation damper 1 may be configured by including a regulating means 101 that regulates the rotation of the closing member 46 in the A and B directions beyond a certain level. A substantially circular fixing member 102 is provided on the fixing member 102 and the shaft member 77, and engaging means 103 that engage with each other when the passage 91 is opened and closed by the closing member 46.
[0048]
The engaging means 103 includes an arc-shaped notch 105 formed in the fixing member 102, and a projection 106 formed integrally with the shaft member 77 and disposed in the notch 105. The fixing member 102 is fixed to the support plate 73, and the shaft member 77 extends through the fixing member 102 so as to be rotatable in the A and B directions with respect to the fixing member 102.
[0049]
When the closing member 46 is rotated in the direction A by the electric motor 71 and the passage 91 is closed as shown in FIG. 6, the regulating means 101 is a surface of the fixing member 102 that defines the one end of the notch 105. 111, the shaft member 77 is prevented from further rotating in the A direction, and similarly, when the closing member 46 is rotated in the B direction by the electric motor 71, the passage 91 is opened as shown in FIG. The protrusion 106 is in contact with the surface 112 of the fixing member 102 that defines the other end of the notch 105, and prevents further rotation of the shaft member 77 in the B direction.
[0050]
By providing such a restricting means 101, the horizontally long seal members 35 and 36 are appropriately elastically deformed without being affected by the inertia of the output rotating shaft 75 of the electric motor 71, and the closing member 46 is applied. Can be touched.
[0051]
In addition, as shown in FIG. 11, the horizontally long member 23 may be configured with an arc portion 121.
[0052]
【The invention's effect】
According to the present invention, there is provided a ventilation damper that can quickly open and close a passage in response to wind blown outdoors without requiring an electrical sensor, and can be configured in a small size that does not require much space. can do.
[Brief description of the drawings]
FIG. 1 is a cross-sectional explanatory view of a preferred example of an embodiment of the present invention.
2 is a cross-sectional view taken along the line II-II of the example shown in FIG.
3 is a cross-sectional view taken along the line III-III in the example shown in FIG.
4 is a cross-sectional view taken along the line IV-IV in the example shown in FIG.
5 is a cross-sectional view taken along the line VV of the example shown in FIG.
6 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
7 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
FIG. 8 is an explanatory diagram of another preferred example of an embodiment of the present invention.
9 is an operation explanatory diagram of the example shown in FIG. 8. FIG.
FIG. 10 is an explanatory diagram of another preferred example of an embodiment of the present invention.
11 is a cross-sectional view taken along line XI-XI of the example shown in FIG.
12 is a view taken along the line XII-XII of the example shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ventilation damper 2 Inside building 3 Outside building 4 Main passages 5 and 6 Sub passage 7 Frame means 8 Passage opening and closing means 9, 10 Blade means 11 Rotating means

Claims

A frame means defining a main passage and the auxiliary passage for communicating the building inside and outside, are mainly a passage opening and closing means for opening and closing the main passage with is arranged rotatably in the passage, it is arranged rotatably on the sub-passage when the secondary passage above a certain speed of the air flow is generated along with, this air flow is provided with a vane means for rotating the passage switching means so as to close the main passage, the passage closing means, the main A ventilation damper that is constantly urged to rotate to open the passage.

The ventilation damper according to claim 1, wherein the auxiliary passage is provided on both sides of the main passage with the main passage interposed therebetween.

The passage opening / closing means includes a rotatable shaft and a closing member fixed to the rotatable shaft, and the closing member is always urged so as to open the main passage, so that the rotation moment is generated by its own weight. The ventilation damper according to claim 1 or 2, wherein the ventilation damper is fixed to a rotatable shaft so as to generate the above.

The passage opening / closing means includes a rotatable shaft and a closing member fixed to the rotatable shaft, and the closing member is always urged to open the main passage by its own weight. The ventilation damper according to any one of claims 1 to 3, wherein a center of gravity is eccentric from an axis of the rotatable shaft and is fixed to the rotatable shaft.

The blade means receives the air flow in the sub-passage when the main passage is opened by the passage opening / closing means, and closes the sub-passage when the main passage is closed by the passage opening / closing means. The ventilation damper according to claim 3 or 4, wherein the ventilation damper has blades protruding and fixed to a rotatable shaft.

The ventilation damper according to any one of claims 1 to 5, further comprising a rotating means for rotating the passage opening / closing means so as to forcefully close the main passage by the passage opening / closing means.

The turning means includes a turning power generation means and a transmission means for transmitting the turning power generated by the turning power generation means to the passage opening / closing means. The transmission means has the passage opening / closing means at the passage opening position. The ventilation damper according to claim 6, wherein when it is turned, the passage opening / closing means toward the passage closing position is allowed to freely rotate.

The frame means has a pair of side wall members and a pair of horizontally long members bridging the pair of side wall members so as to define a main passage and a sub passage, and each of the pair of horizontally long members has a horizontally long seal. Each of the pair of side wall members is provided with a vertically long seal member, and the passage opening / closing means abuts against the horizontally long and vertically long seal members when rotated to the passage closed position. The ventilation damper according to any one of claims 1 to 7, wherein the ventilation damper is configured as described above.