JP2004156841A - Ventilator for under the floor, and ventilated house with the ventilator installed therein - Google Patents

Ventilator for under the floor, and ventilated house with the ventilator installed therein Download PDF

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Publication number
JP2004156841A
JP2004156841A JP2002323424A JP2002323424A JP2004156841A JP 2004156841 A JP2004156841 A JP 2004156841A JP 2002323424 A JP2002323424 A JP 2002323424A JP 2002323424 A JP2002323424 A JP 2002323424A JP 2004156841 A JP2004156841 A JP 2004156841A
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Japan
Prior art keywords
opening
closing
underfloor
ventilation device
damper
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JP2002323424A
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Japanese (ja)
Inventor
Ai Mizuno
あい 水野
Keizo Kazami
桂三 風見
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Kanegafuchi Chemical Industry Co Ltd
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Kanegafuchi Chemical Industry Co Ltd
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Priority to JP2002323424A priority Critical patent/JP2004156841A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilated house capable of maintaining airtightness for a long period of time by reducing trouble and opening/closing operation failure to maintain ventilating performance and airtightness of a building for a long period of time. <P>SOLUTION: This heat insulating and airtight type ventilator provided with an automatic opening/closing mechanism is capable of eliminating micro dust or the like stuck to an opening/closing damper by wind force, or by impact in some cases by keeping a clearance immediately before the complete closure of the opening/closing damper. By installing the ventilator at a ventilation opening under the floor of the ventilated house, the building is made to have a structure to suppress a lowering of airtightness. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、開閉機構に砂や土等のホコリが蓄積しにくい構造を備えた床下に設置する断熱・気密型換気装置、及びそれを設置することを特徴とする通気住宅に関する。
【0002】
【従来の技術】
日本の高温多湿な気候では、一般的に、外気に開放した床下換気口を基礎に複数設けて床下の換気を行い、家屋の腐朽等を防止する。しかし、冬季においては、建築物内部の防熱のため、冷たい外気の屋内への流入を防止する開閉機構を設けた床下換気装置が提供されている。そして開閉機構を設けた床下換気装置に堆積したホコリ等を装置外に排出する手段が示されている。(例えば特許文献1参照)
また、省エネルギー性や快適性に配慮した住環境をつくるために、建築物の断熱性及び気密性を向上させた高断熱・高気密化建築物が開発され、さらに快適性を高めるため、躯体内に通気層を設け、床下空間と小屋裏空間を連通させた建築物が提供されている。(例えば特許文献2参照)
【0003】
【特許文献1】特開平10−238829号公報(第1図)
【0004】
【特許文献2】特開平10−46694号公報(第1図〜第6図)
【0005】
【発明が解決しようとする課題】
ケーシング内の開閉機構等に付着し、ケーシングに堆積したホコリを装置外に排出する床下換気装置を、通気住宅に設置した場合、床下換気装置がホコリの蓄積により動作不良を起こすと、建物の通気性や気密性の低下を引き起こす場合がある。
【0006】
そこで、ホコリが開閉機構に蓄積しにくい構造の床下換気装置を提供すること、また、該床下換気装置を設置することにより、気密性を長期にわたって良好に維持しうる通気住宅を提供することである。
【0007】
【課題を解決するための手段】
本発明の床下換気装置は、請求項1においては、屋根裏に形成された小屋裏空間と、この小屋裏空間の空気を換気する小屋裏換気部と、床下に形成された床下空間と、この床下空間の空気を換気する床下換気部と、前記両空間を連通する壁体内通気路を有する壁体とを具備する建物において、床下換気部に設置され、自動開閉機構を備えた断熱・気密型換気装置であって、開閉ダンパーの開閉速度が変更可能であるか、又は開閉中に一時停止する機能を有することを特徴とする床下換気装置である。
【0008】
請求項2においては、自動開閉機構が開閉ダンパーを有し、該ダンパーが遠隔操作できることを特徴とする請求項1に記載の床下換気装置である。
【0009】
請求項3においては、断熱性を有する開閉ダンパーを設けたことを特徴とする請求項1、又は2に記載の床下換気装置である。
【0010】
請求項4においては、換気装置本体の内側で開閉ダンパーが取り付けられる開口部と、開閉ダンパーの少なくともいずれか一方には、開口部の周囲に沿って気密部材が設けられていることを特徴とする請求項1から3のいずれか一項に記載の床下換気装置である。
【0011】
請求項5においては、請求項1から4のいずれか一項に記載の換気装置を設置したことを特徴とする通気住宅である。
【0012】
請求項6においては、請求項1から5のいずれか一項に記載の換気装置及び、小屋裏換気部に強制換気装置を設置したことを特徴とする通気住宅である。
【0013】
【発明の実施の形態】
【0014】
【実施例】
本発明の実施の形態を以下図面に基づいて説明する。
【0015】
図1は、本発明の換気装置の開閉ダンパーの実施形態を示している。
【0016】
図1に示すように、床下換気装置3には外形を形成する換気装置本体5と、その外周には断熱材層4が設けられ、換気装置本体5の内部に開閉ダンパー7が設けられている。
【0017】
開閉ダンパー7は、換気装置本体5の内寸よりわずかに外寸が小さく、通常は、換気装置本体5の鉛直断面と同形状のダンパー体40を備えている。例えば、換気装置本体の鉛直断面が円形の場合は、ダンパー体40の正面形状は円形であり、換気装置本体の縦断面が矩形の場合は、ダンパー体40の正面形状も矩形であるのが一般的であるが、特にこれに限定されるものではなく、外形と異なる形状であっても差し支えない。
【0018】
このダンパー体40は、換気装置本体5の側部に付設した開閉駆動装置に接続した回転軸41を介して、換気装置本体5内部で回動して、開口部60を開閉できるように軸支されている。破線は開状態を示す。ダンパー体40を実線で示した閉止位置とこの閉止位置から略90度回動した開放位置の間で移動させ、これによって空気経路を開閉できるようになっている。
【0019】
なお、これらの換気装置本体5、開閉ダンパー7は、金属製、プラスチック製のものが用いられる。金属としては、例えば、SUS304などのステンレス鋼、アルミなどの金属製が例示でき、プラスチックとしては、例えば、ABS、塩化ビニル、ポリエチレン、ポリプロピレンなどの合成樹脂が例示できる。
【0020】
この開閉ダンパー7は閉鎖時の速度変化が可能であるか、或いは一時停止することが可能である。例えば、駆動装置を電動回転機とする場合、電動回転機の回転軸、または回転軸につながるギアの回転を制御する方法がある。回転速度変化をより安価で容易に行うためには、図2−1や図2−2に示すように、換気装置本体内部に引掛り70を設け、引掛り70により開閉ダンパーの開閉速度を落とすか、或いは一時停止させることが可能である。このようにして、開閉ダンパーが完全に閉鎖する寸前に開閉ダンパーと開口部60との隙間を保持することにより、通過する空気の速度が上がること、また、引っかかり部をダンパー部が通過する際の開閉速度の緩急や閉まる際の衝撃により、開口部60付近、又はダンパー体40、或いはそれらに取り付けた気密部材51に付着した微小なホコリを取り除くことが可能になる。よって、ホコリ等が堆積しにくくなり、開閉ダンパーの密閉性を維持することが可能となる。
【0021】
また、本床下換気装置に防火性を持たせるため、開閉ダンパー7は防火シャッターを兼ねることもできる。その場合、開閉ダンパー7と換気装置本体5は金属製あるいは難燃性のプラスチックが用いられ、火災による温度や煙を感知する装置と連動させて開閉ダンパー7が閉鎖する構造とすることが可能である。また、換気装置本体5内部やカバー6に耐火性の熱膨張部材を設け、火災発生時には熱膨張部材の膨張によって通気路を遮断することも可能である。特に、開口部60の周辺に沿って設け、シール材として使用すると防火性が高く有効である。熱膨張部材は、セラミックファイバー系やゴム系が例示でき、形状はシート状、テープ状、パテ状のものが用いられる態様として例示できる。
【0022】
換気装置本体の外側は断熱材で囲繞されていることが好ましく、ダンパー体40の少なくとも片面に断熱材層51が形成されていると、開閉ダンパーを閉じて通風換気が停止した際、たとえ冬場であっても断熱性が低下しにくく、ダンパー体40の結露の発生防止の点で好ましい。
【0023】
断熱材層51は特に限定はないが、具体的には発泡ポリスチレン、発泡ポリウレタン、発泡ポリプロピレンなどの合成発泡樹脂が例示でき、合成樹脂発泡板あるいは該発泡板を貼着してもよい。その他に、無機充填材を含有する塩化ビニル系樹脂又は塩素化塩化ビニル系樹脂を主成分とする発泡体からなる準不燃性以上の材料で構成される断熱材であってもよい。この場合には、断熱性能のみならず、耐火性能、軽量性にも優れる利点がある。さらに他の断熱材としては、例えば、アクリル樹脂、塩素化ビニル、フェノール樹脂などから形成された断熱材であってもよい。要は断熱性能を有する合成樹脂であればよく、材質は限定されない。また、その発泡倍率は特に限定されるものではないが、10〜60倍、好ましくは15〜40倍程度が好ましい。さらに、このような合成樹脂発泡板に限らず、グラスウール、ロックウール等を板状に形成した繊維系の断熱材でも使用可能である。
【0024】
前記開閉ダンパーが取り付けられる開口部60とダンパー体40の少なくともいずれか一方には開口部の周辺に沿って気密性部材52が設けられていると、開閉ダンパーを閉じて通風換気が停止した際、たとえ冬場であっても気密性が向上し、熱損失防止の効果が期待できる。この場合、気密性部材としては、弾力性及び粘着性を持ったシーリングテープであるのが好ましい。その一例として、独立気泡よりなる軟質塩化ビニル発泡体を基材とし、片面に粘着材と剥離紙とがついたテープがあり、具体的には鐘淵化学工業(株)の商品名「バンシール」が利用可能である。
【0025】
開閉ダンパー7の回転軸41は、図1では水平方向に設置しているが、鉛直方向に設置してもよく、特に設置方向にこだわらない。円形の場合、回転軸は開口の中央に設けることが好ましい。矩形の場合は、回転軸は開口の中央に限らず、矩形の一辺に偏る態様も可能であり、ダンパー体の回転軸は換気装置本体5の外装あるいは外装部分付近に取り付けられることも可能である。開口部分の偏りを少なくするためには、中央に設けることが望ましい。
【0026】
本換気装置の開閉ダンパーの開閉は、遠隔操作によって行うことができ、屋外に出て各々の換気装置の設置場所で開閉する煩雑な作業を省力化できるようになる。特に限定するものではないが、本換気装置の開閉ダンパーの開閉駆動装置を、例えば電動式にすることによって遠隔操作が可能である。あるいは、家屋の一箇所に設けた操作位置から基礎の床下に設置した本発明の換気装置に至るまで、ダンパーの回転軸41を回転させる操作用ワイヤーを張ることによって遠隔操作も可能である。
【0027】
また、開閉駆動装置に温度、湿度、気象に関するセンサーやタイマーを接続し、自動開閉するように構成すると、季節や室内外の温湿度条件に応じ、開閉ダンパーの動作を確実に行うことも可能である。
【0028】
図3は本発明の床下換気装置3の外観斜視図である。床下換気装置3には外気の取り入れ側に通気可能で、かつ取り外し可能なカバー6を備えている。カバー6は防虫、防鼠の用をなすことができる。金属製、プラスチック製の網、又はパンチングメタル等の通気可能なものであり、網の目開きは3ミリ以下が好ましい。それに加えてカバー部に防塵用のフィルターを設けてもよい。
【0029】
図3において床下換気装置3は断面が円形である円筒形を想定しているが、円形に限らず、楕円形、矩形でもよい。円形の場合は、基礎立ち上がり部の構造耐力上の欠損となりにくいので好ましい。楕円形、矩形の場合、横長にすることにより基礎開口面積を確保しやすく換気装置1個あたりの通気量を多くすることができる。
【0030】
上記のような床下換気装置3は、通気住宅に設置することができる。図4は、床下換気装置3を設置することを特徴とする通気住宅の一例を示す概略断面図である。該通気住宅は、断熱材82が建物全体に張り巡らされており、外装材84及び屋根材85の内側に外側通気層90が形成されている。また、この断熱材82の内側には、小屋裏空間86及び床下空間87と連通して各部屋88を包括的に囲む内側通気層89が形成されている。また、外気と床下空間87とは開閉可能な床下換気口2で適宜連通し、外気と小屋裏空間86とは棟下近傍で開閉可能な棟下換気口91により適宜連通する。そして、床下換気口2及び棟下換気口91をそれぞれ床下開閉ダンパー7及び棟下開閉ダンパー92により開口させた場合には、床下換気口2から取り入れた空気を、内側通気層89を通して棟下換気口91から外部へ排出するように構成して、建築物内の通気性を向上させている。
【0031】
なお、棟下換気口は小屋裏空間86の外壁に設けても、同様に建築物内の通気性を向上させることができる。
【0032】
本発明の床下換気装置3を床下換気口2にかえて設置することにより、容易に開閉が出来、気候条件に適した開閉制御が可能になる。さらに、ホコリがたまることによる自動開閉機構の故障や開閉動作不良の減少により、建築物の気密性を長期に維持することが可能となる。このような通気住宅に棟下換気口にファン等の強制換気装置を設けた場合、換気能力を向上、安定の面で好ましい。
【0033】
【発明の効果】
本発明によれば、開閉ダンパーが完全に閉鎖する寸前に隙間を保つことにより、開閉ダンパーを通過する風速が上がり、場合によってはダンパーの閉まる際の衝撃により微小なホコリ等の堆積防止あるいは堆積したホコリを除去することができる。それゆえ、ホコリ等が開閉機構に堆積することによって生ずる故障や開閉動作不良を起こすことが少なく、長期に気密性を保つことが可能である。また、制御や遠隔操作を容易に行うことができ、メンテナンスの手間を軽減することが可能である。この床下換気装置を設置した通気住宅においては、床下換気装置の故障や開閉動作不良の減少により、長期にわたって気密性を維持することが可能となる。
【図面の簡単な説明】
【図1】開閉ダンパーの断面図。
【図2】開閉ダンパーの閉じる寸前の状態を示す断面図(図2−1)、開閉ダンパーの閉状態を示す断面図(図2−2)。
【図3】床下換気装置の外観斜視図。
【図4】本発明の床下換気装置を設置した通気住宅の一例を示す概略断面図。
【符号の説明】
1 基礎
2 床下換気口
3 床下換気装置
4 断熱材層
5 換気装置本体
6 カバー
7 開閉ダンパー
30 駆動装置ボックス
40 ダンパー体
41 回転軸
51 断熱材層
52 気密部材
60 開口部
70 引掛り
80 土台
82 断熱材
83 建築物
84 外装材
85 屋根材
86 小屋裏空間
87 床下空間
88 各部屋
89 内側通気層
90 外側通気層
91 棟下換気口
92 棟下開閉ダンパー
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat insulation / airtight ventilation device installed under a floor having a structure in which dust such as sand and soil hardly accumulates in an opening / closing mechanism, and a ventilated house provided with the ventilation device.
[0002]
[Prior art]
In Japan's hot and humid climate, generally, a plurality of underfloor vents that are open to the outside air are provided as a basis to provide ventilation under the floor to prevent decay of houses. However, in the winter season, underfloor ventilation devices provided with an opening / closing mechanism for preventing cold outside air from flowing into a room are provided to prevent heat inside a building. A means for discharging dust and the like accumulated in the underfloor ventilation device provided with the opening / closing mechanism to the outside of the device is shown. (For example, see Patent Document 1)
In addition, in order to create a living environment that considers energy conservation and comfort, high-insulated and airtight buildings with improved heat insulation and airtightness of buildings have been developed. There is provided a building in which a ventilating layer is provided and a space under the floor and a space behind the hut communicate with each other. (For example, see Patent Document 2)
[0003]
[Patent Document 1] Japanese Patent Laid-Open No. Hei 10-238829 (FIG. 1)
[0004]
[Patent Document 2] JP-A-10-46694 (FIGS. 1 to 6)
[0005]
[Problems to be solved by the invention]
If an underfloor ventilator is installed in a ventilated house that discharges dust accumulated on the casing to the outside of the device and adheres to the opening / closing mechanism inside the casing, etc. May cause deterioration in airtightness and airtightness.
[0006]
Therefore, it is an object of the present invention to provide an underfloor ventilation device having a structure in which dust hardly accumulates in the opening / closing mechanism, and to provide a ventilated house capable of maintaining airtightness for a long period of time by installing the underfloor ventilation device. .
[0007]
[Means for Solving the Problems]
The underfloor ventilation device of the present invention according to claim 1, an understory space formed in an attic, an attic ventilation section for ventilating air in the attic space, an underfloor space formed under the floor, and an underfloor space formed under the floor In a building that includes an underfloor ventilation unit that ventilates air in a space and a wall body that has a ventilation passage in the wall that communicates the two spaces, a heat-insulated and airtight ventilation system that is installed in the underfloor ventilation unit and that has an automatic opening and closing mechanism. An underfloor ventilation device, which is a device, wherein the opening / closing speed of an opening / closing damper is changeable or has a function of temporarily stopping during opening / closing.
[0008]
The under-floor ventilator according to claim 1, wherein the automatic opening / closing mechanism has an opening / closing damper, and the damper can be remotely operated.
[0009]
According to a third aspect of the present invention, there is provided the underfloor ventilator according to the first or second aspect, further comprising an opening / closing damper having heat insulating properties.
[0010]
According to a fourth aspect, an airtight member is provided along the periphery of the opening in at least one of the opening and the opening where the opening / closing damper is attached inside the ventilation device main body. The underfloor ventilation device according to any one of claims 1 to 3.
[0011]
According to a fifth aspect, there is provided a ventilated house provided with the ventilation device according to any one of the first to fourth aspects.
[0012]
According to a sixth aspect of the present invention, there is provided a ventilated house characterized in that a ventilation device according to any one of the first to fifth aspects and a forced-ventilation device is installed in a ventilation area behind the hut.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
[0014]
【Example】
An embodiment of the present invention will be described below with reference to the drawings.
[0015]
FIG. 1 shows an embodiment of an opening / closing damper of a ventilation device according to the present invention.
[0016]
As shown in FIG. 1, the underfloor ventilation device 3 is provided with a ventilation device main body 5 forming an outer shape, a heat insulating material layer 4 is provided on an outer periphery thereof, and an opening / closing damper 7 is provided inside the ventilation device main body 5. .
[0017]
The opening / closing damper 7 has a slightly smaller outer size than the inner size of the ventilation device main body 5, and usually includes a damper body 40 having the same shape as the vertical cross section of the ventilation device main body 5. For example, when the vertical cross section of the ventilator body is circular, the front shape of the damper body 40 is circular, and when the vertical cross section of the ventilator body is rectangular, the front shape of the damper body 40 is generally rectangular. However, the present invention is not particularly limited to this, and may have a shape different from the outer shape.
[0018]
The damper body 40 pivots inside the ventilation device main body 5 via a rotation shaft 41 connected to an opening / closing drive device attached to a side portion of the ventilation device main body 5 so that the opening 60 can be opened and closed. Have been. The broken line indicates the open state. The damper body 40 is moved between a closed position indicated by a solid line and an open position rotated by approximately 90 degrees from the closed position, whereby the air path can be opened and closed.
[0019]
The ventilator body 5 and the opening / closing damper 7 are made of metal or plastic. Examples of the metal include a metal such as stainless steel such as SUS304 and aluminum, and examples of the plastic include a synthetic resin such as ABS, vinyl chloride, polyethylene, and polypropylene.
[0020]
The opening / closing damper 7 can change the speed at the time of closing, or can temporarily stop. For example, when the driving device is an electric rotating machine, there is a method of controlling rotation of a rotating shaft of the electric rotating machine or a gear connected to the rotating shaft. In order to easily change the rotation speed at a lower cost, as shown in FIGS. 2-1 and 2-2, a hook 70 is provided inside the ventilation device main body, and the opening / closing speed of the opening / closing damper is reduced by the hook 70. Or it can be paused. In this manner, by maintaining the gap between the opening and closing damper and the opening 60 just before the opening and closing damper is completely closed, the speed of the air passing therethrough increases, and when the damper portion passes through the catching portion. It is possible to remove minute dust adhering to the vicinity of the opening 60, the damper body 40, or the hermetic member 51 attached to the opening 60 due to the opening / closing speed or the impact at the time of closing. Therefore, dust and the like hardly accumulate, and it is possible to maintain the tightness of the opening / closing damper.
[0021]
Further, in order to make the main underfloor ventilation device fireproof, the opening / closing damper 7 can also serve as a fireproof shutter. In this case, the opening / closing damper 7 and the ventilation device main body 5 are made of metal or flame-retardant plastic, and can be structured so that the opening / closing damper 7 is closed in conjunction with a device that detects temperature or smoke caused by a fire. is there. In addition, it is also possible to provide a fire-resistant thermal expansion member inside the ventilation device main body 5 and the cover 6, and to cut off the ventilation path by expansion of the thermal expansion member when a fire occurs. In particular, when provided along the periphery of the opening 60 and used as a sealing material, fire resistance is high and effective. The thermal expansion member may be a ceramic fiber type or a rubber type, and may be a sheet, tape, or putty.
[0022]
It is preferable that the outside of the ventilation device main body is surrounded by a heat insulating material. When a heat insulating material layer 51 is formed on at least one surface of the damper body 40, when the open / close damper is closed and ventilation ventilation is stopped, even in winter, Even if it does, the heat insulating property does not easily decrease, which is preferable from the viewpoint of preventing occurrence of dew condensation on the damper body 40.
[0023]
The heat insulating material layer 51 is not particularly limited, but specific examples thereof include a synthetic foamed resin such as foamed polystyrene, foamed polyurethane, and foamed polypropylene, and a synthetic resin foam board or the foam board may be attached. In addition, a heat insulating material composed of a quasi-incombustible or more material made of a vinyl chloride resin containing an inorganic filler or a foam containing a chlorinated vinyl chloride resin as a main component may be used. In this case, there is an advantage not only in heat insulation performance but also in fire resistance performance and lightness. Still another heat insulating material may be, for example, a heat insulating material formed of acrylic resin, vinyl chloride, phenol resin, or the like. In short, any synthetic resin having heat insulation performance may be used, and the material is not limited. Further, the expansion ratio is not particularly limited, but is preferably about 10 to 60 times, and more preferably about 15 to 40 times. Further, the present invention is not limited to such a synthetic resin foam plate, and a fiber-based heat insulating material in which glass wool, rock wool, or the like is formed in a plate shape can also be used.
[0024]
When the airtight member 52 is provided along the periphery of the opening in at least one of the opening 60 to which the opening / closing damper is attached and the damper body 40, when the ventilation damper is closed by closing the opening / closing damper, Even in winter, the airtightness is improved, and the effect of preventing heat loss can be expected. In this case, the airtight member is preferably a sealing tape having elasticity and adhesiveness. One example is a tape based on a soft vinyl chloride foam consisting of closed cells and having an adhesive material and release paper on one side. Is available.
[0025]
Although the rotating shaft 41 of the opening / closing damper 7 is installed in the horizontal direction in FIG. 1, it may be installed in the vertical direction, and there is no particular restriction on the installation direction. In the case of a circular shape, the rotation axis is preferably provided at the center of the opening. In the case of a rectangle, the rotation axis is not limited to the center of the opening, but may be biased to one side of the rectangle, and the rotation axis of the damper body may be attached to the exterior of the ventilation device main body 5 or near the exterior portion. . In order to reduce the deviation of the opening, it is desirable to provide the opening at the center.
[0026]
The opening / closing of the opening / closing damper of the present ventilator can be performed by remote control, and the complicated work of going outside and opening / closing at the installation location of each ventilator can be saved. Although not particularly limited, remote control is possible by making the opening / closing drive of the opening / closing damper of the present ventilator electric, for example. Alternatively, remote operation is possible by stretching an operation wire for rotating the rotation shaft 41 of the damper from the operation position provided at one place of the house to the ventilation device of the present invention installed under the floor of the foundation.
[0027]
Also, by connecting sensors and timers for temperature, humidity, and weather to the opening / closing drive device and automatically opening and closing, it is possible to reliably operate the opening / closing damper according to the season and temperature and humidity conditions inside and outside the room. is there.
[0028]
FIG. 3 is an external perspective view of the underfloor ventilation device 3 of the present invention. The underfloor ventilation device 3 is provided with a cover 6 that can be ventilated to the outside air intake side and that can be removed. The cover 6 can be used for insect repelling and rat proofing. The mesh is made of metal, plastic mesh, or perforated metal such as punched metal, and the mesh size is preferably 3 mm or less. In addition, a dust filter may be provided on the cover.
[0029]
In FIG. 3, the underfloor ventilation device 3 is assumed to have a cylindrical shape having a circular cross section. However, the shape is not limited to a circle, and may be an oval shape or a rectangular shape. A circular shape is preferable because it is unlikely to cause a structural strength loss at the foundation rising portion. In the case of an elliptical shape or a rectangular shape, it is easy to secure a base opening area by making the shape long, and it is possible to increase a ventilation amount per one ventilation device.
[0030]
The underfloor ventilation device 3 as described above can be installed in a ventilation house. FIG. 4 is a schematic sectional view showing an example of a ventilated house in which the underfloor ventilation device 3 is installed. In the ventilated house, a heat insulating material 82 is stretched around the entire building, and an outer ventilation layer 90 is formed inside the exterior material 84 and the roof material 85. Further, inside the heat insulating material 82, an inner ventilation layer 89 is formed, which communicates with the cabin back space 86 and the underfloor space 87 and comprehensively surrounds each room 88. The outside air and the underfloor space 87 are appropriately communicated through the openable underfloor ventilation port 2, and the outside air is appropriately communicated with the understory space 86 through the underfloor ventilator 91 that can be opened and closed near the underfloor. When the underfloor ventilation opening 2 and the underfloor ventilation opening 91 are opened by the underfloor opening / closing damper 7 and the underfloor opening / closing damper 92, respectively, the air taken in from the underfloor ventilation opening 2 is ventilated under the building through the inner ventilation layer 89. It is configured to be discharged from the mouth 91 to the outside to improve the ventilation in the building.
[0031]
In addition, even if the ventilation hole under the ridge is provided on the outer wall of the space 86 behind the hut, the ventilation in the building can be similarly improved.
[0032]
By installing the underfloor ventilation device 3 of the present invention in place of the underfloor ventilation opening 2, opening and closing can be easily performed, and opening and closing control suitable for climatic conditions becomes possible. Furthermore, the airtightness of the building can be maintained for a long period of time due to a decrease in the failure of the automatic opening / closing mechanism and the opening / closing operation failure due to accumulation of dust. When such a ventilated house is provided with a forced ventilation device such as a fan at a ventilation hole below the ridge, it is preferable in terms of improving and stabilizing the ventilation capacity.
[0033]
【The invention's effect】
According to the present invention, by maintaining a gap immediately before the opening / closing damper is completely closed, the wind speed passing through the opening / closing damper is increased, and in some cases, the accumulation of minute dust or the like is prevented or accumulated due to an impact when the damper is closed. Dust can be removed. Therefore, a failure or an opening / closing operation failure caused by accumulation of dust or the like on the opening / closing mechanism is less likely to occur, and airtightness can be maintained for a long time. In addition, control and remote control can be easily performed, and maintenance work can be reduced. In a ventilated house provided with this underfloor ventilation device, it is possible to maintain airtightness for a long period of time due to a reduction in failure of the underfloor ventilation device and poor opening / closing operation.
[Brief description of the drawings]
FIG. 1 is a sectional view of an opening / closing damper.
FIG. 2 is a sectional view showing a state immediately before the opening / closing damper is closed (FIG. 2-1), and a sectional view showing a closed state of the opening / closing damper (FIG. 2-2).
FIG. 3 is an external perspective view of the underfloor ventilation device.
FIG. 4 is a schematic sectional view showing an example of a ventilated house provided with the underfloor ventilation device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Foundation 2 Underfloor ventilation opening 3 Underfloor ventilation device 4 Insulation material layer 5 Ventilation device main body 6 Cover 7 Opening / closing damper 30 Drive device box 40 Damper body 41 Rotating shaft 51 Insulation material layer 52 Airtight member 60 Opening 70 Hook 80 Base 82 Thermal insulation Material 83 Building 84 Exterior material 85 Roofing material 86 Roof back space 87 Underfloor space 88 Each room 89 Inner ventilation layer 90 Outer ventilation layer 91 Building ventilation hole 92 Building opening / closing damper

Claims (6)

屋根裏に形成された小屋裏空間と、この小屋裏空間の空気を換気する小屋裏換気部と、床下に形成された床下空間と、この床下空間の空気を換気する床下換気部と、前記両空間を連通する壁体内通気路を有する壁体とを具備する建築物において、床下換気部に設置され、自動開閉機構を備えた断熱・気密型換気装置であって、開閉ダンパーの開閉速度が変更可能であるか、又は開閉中に一時停止する機能を有する床下換気装置。The attic space formed in the attic, the attic ventilation section for ventilating the air in the attic space, the underfloor space formed under the floor, the underfloor ventilation section for ventilating the air in the underfloor space, and both the spaces In a building equipped with a wall having a ventilation passage in the wall that communicates with the wall, the insulation and airtight ventilation device installed in the underfloor ventilation section and having an automatic opening / closing mechanism, the opening / closing speed of the opening / closing damper can be changed Or an underfloor ventilator having the function of pausing during opening and closing. 自動開閉機構が開閉ダンパーを有し、該ダンパーが遠隔操作できることを特徴とする請求項1に記載の床下換気装置。The underfloor ventilation device according to claim 1, wherein the automatic opening / closing mechanism has an opening / closing damper, and the damper can be remotely operated. 断熱性を有する開閉ダンパーを設けたことを特徴とする請求項1又は2に記載の床下換気装置。The underfloor ventilator according to claim 1 or 2, further comprising an opening / closing damper having heat insulation properties. 換気装置本体の内側で開閉ダンパーが取り付けられる開口部と、開閉ダンパーの少なくともいずれか一方には、開口部の周囲に沿って気密部材が設けられていることを特徴とする請求項1〜3のいずれか一項に記載の床下換気装置。An opening to which an opening / closing damper is attached inside the ventilation device main body, and at least one of the opening / closing damper, wherein an airtight member is provided along the periphery of the opening. The underfloor ventilation device according to any one of the preceding claims. 請求項1〜4のいずれか一項に記載の換気装置を設置したことを特徴とする通気住宅。A ventilated house provided with the ventilation device according to any one of claims 1 to 4. 請求項1〜5のいずれか一項に記載の換気装置及び、小屋裏空間に強制換気装置を設置したことを特徴とする通気住宅。A ventilated house, wherein a ventilation device according to any one of claims 1 to 5 and a forced ventilation device are installed in a space behind the cabin.
JP2002323424A 2002-11-07 2002-11-07 Ventilator for under the floor, and ventilated house with the ventilator installed therein Pending JP2004156841A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220195720A1 (en) * 2020-12-21 2022-06-23 Your Crawl Space, Inc. Building foundation ventilation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220195720A1 (en) * 2020-12-21 2022-06-23 Your Crawl Space, Inc. Building foundation ventilation system
US11753816B2 (en) * 2020-12-21 2023-09-12 Your Crawl Space, Inc. Building foundation ventilation system

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