JP2004045010A

JP2004045010A - Connecting structure of ventilator

Info

Publication number: JP2004045010A
Application number: JP2002238112A
Authority: JP
Inventors: Norihiko Kamata; 鎌田　紀彦; Hiroshi Aiba; 相庭　博; Yuichiro Kishimoto; 岸本　悠一郎
Original assignee: KISHIMOTO SEIKEI KK; TIGER SANGYO KK
Current assignee: KISHIMOTO SEIKEI KK; TIGER SANGYO KK
Priority date: 2002-05-24
Filing date: 2002-08-19
Publication date: 2004-02-12
Anticipated expiration: 2022-08-19
Also published as: JP3401528B1

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting structure of a ventilator for easily and surely sealing between a ventilation pipe and the ventilator. <P>SOLUTION: In this connecting structure of the ventilator wherein the ventilation pipe 2 is penetrated through an outer wall 4 to communicate an indoor side and an outdoor side, one end of the ventilation pipe 2 is projected to the outdoor side, and a ventilation apparatus 1 is mounted on the projection part 2c, the ventilation apparatus 1 comprises a pedestal 22 and an outdoor hood 20 independent from each other. The pedestal 22 has a base part 25 opposite to the outer wall 4 in a state of being close to each other, and a circumferential part 24 adjacent to an outer periphery of a projecting part 2c of the ventilation pipe 2, and an annular packing installation space 35 is formed among the outer wall 4, the projecting part 2c and the circumferential part 24 to install a packing 32. The packing 32 is composed of a dry seal member having the specific shape, and seals between the outer peripheral part 24 and an outer peripheral face of the ventilation pipe 2. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は換気装置の接続構造に関するものである。
【０００２】
【従来の技術およびその欠点】
従来の換気装置の接続構造の一例を図１７に示す。
図１７において、通気パイプ２、換気ファン３および屋外フード（換気器具）１００からなる換気装置が設けられている。通気パイプ２は、内壁５を貫通して設けられ、換気用通路１０の一部を構成している。前記通気パイプ２の室内側開口２ａには、換気ファン３が設けられている。一方、前記通気パイプ２の屋外側開口２ｂには、屋外フード１００の差込部１ｄが挿入されている。
【０００３】
ここで、施工時に屋外フード１００の差込部１ｄのまわりにコーキング材６を付着させて、通気パイプ２内に差し込み、差込部１ｄと通気パイプ２とのシールを行っている。しかし、コーキング材６の塗布ムラや経時劣化などにより、通気層８を流れる雨水等が通気パイプ２の内部に浸入するおそれがある。また、冬期には、室内の湿潤な空気が、前記コーキング材６の部分を通って通気層８内に侵入し、通気層８内で結露し、外壁４の裏側において水滴が凍結して壁面を損傷させるなどのおそれがある。
【０００４】
そこで、かかる欠点を解決する接続構造が特開平９−１６６３４１号に開示されている。かかる接続構造を図１８に示す。
【０００５】
図１８において、通気パイプ２は、外壁４を貫通して、室内側と屋外側とを連通させていると共に、その突出部２ｃが屋外側に突出している。前記突出部２ｃには、ガイド管１４が外嵌している。前記突出部２ｃとガイド管１４との間には若干の隙間が設けられ、該隙間にコーキング材が充填されて前記通気パイプ２と換気装置１００との間のシールが図られている。
【０００６】
しかし、前記先行技術では、通気パイプ２とガイド管１４との間にコーキング材を充填しにくいから、前記コーキング材の充填作業に熟練を有するので、シールが不完全になり易い。
また、外壁４と換気装置１００との間のシールが不完全になる場合もある。
【０００７】
したがって、本発明の主目的は、通気パイプと換気装置との間のシールの気密防水処理を容易かつ確実に行えるようにして、凍害の防止と施工性の向上を図ることである。
【０００８】
【課題を解決するための手段】
前記目的を達成するために、本第１、第２、第３および第４発明は、外壁を貫通して室内側と屋外側とを連通させる通気パイプを設け、前記通気パイプの一端を屋外側に突出させ、該突出部に換気用器具を設けた換気装置の接続構造において、前記換気用器具は、互いに別体の台座と屋外フードを備え、前記台座は、前記外壁に近接した状態で対向する面を持つベース部を備えており、前記屋外フードは、前記通気パイプの屋外側開口を外方の正面から覆う正面板部を備えており、前記台座が、止メ具により前記外壁に固定されていることを共通の構成とする。
【０００９】
前記共通の構成において、本発明は台座と屋外フードとが互いに別体であるから、台座を外壁に取り付けた後に屋外フードを取り付けることができるから、台座の取付時や台座の取付後に、屋外フードが邪魔にならないので、パッキンや樹脂テープによるシール作業を容易に行うことができる。
【００１０】
本第１発明は、前記共通の構成に加え、下記の構成を備えている。
すなわち、前記台座は、前記通気パイプの突出部の外周に近接する円周部を有し、前記外壁と通気パイプの突出部と前記台座の円周部との間には、パッキンを配置する円環状のパッキン配置空間が形成され、前記パッキンは、所定の形状を有する乾式シール部材からなり、前記円周部と前記通気パイプの外周面との間のシールを実行することを特徴とする。
【００１１】
本第１発明においては、前記外壁と通気パイプの突出部と前記台座の円周部との間に、パッキンを配置するパッキン配置空間が形成される。したがって、前記パッキン配置空間または通気パイプの外周面に乾式のシール部材からなるパッキンを予め装着して、前記通気パイプの外周面と前記円周部とのシールを行うことができるから、施工性が向上する。
【００１２】
また、前記パッキンは、前記台座を外壁に固定する止メ具を締めることによって、前記台座と前記外壁との間で圧縮され、前記シールと共に前記台座と前記外壁との間のシールを実行する。したがって、作業員がシール作業に熟練していなくても、外壁と通気パイプと換気装置との間のシールを容易、かつ、確実に行うことができる。
【００１３】
本第２発明は、前記共通の構成に加え、下記の構成を備えている。
すなわち、前記ベース部には、前記通気パイプの突出部の外周と同心円状となる円環部が前記突出部の外周に設けられ、前記円環部と前記突出部との間の空間には、これらの間をシールするパッキンが設けられ、前記パッキンは、所定の形状を有する乾式シール部材からなり、前記突出部の先端が前記円環部よりも突出して露出していることを特徴とする。
【００１４】
本第２発明では、円環部と突出部との間の空間において前記パッキンが圧縮されて、台座と通気パイプとの間をシールするので、前記第１発明と同様にシールを容易かつ確実に行うことができる。
なお、通気パイプの突出部が台座の円環部よりも外方に突出しているので、通気パイプが突出していないような施工不良の状態でないことを容易に確認することもできる。
【００１５】
本第３発明は、前記共通の構成に加え、下記の構成を備えている。
すなわち、前記ベース部には、前記通気パイプの突出部の外周面に近接する円環部が前記突出部の外周に設けられ、前記突出部の先端が前記円環部よりも突出して露出しており、前記円環部と前記突出部との間にまたがるように、樹脂テープが円環状に巻き付けられて粘着されていることにより、前記通気パイプと前記ベース部との間のシールがなされていることを特徴とする。
【００１６】
本第３発明では、台座の円環部と通気パイプの突出部とに樹脂テープが円環状に巻き付けられて、台座と通気パイプとの間がシールされるので、前記第１発明と同様に、シールを容易かつ確実に行うことができる。
特に、通気パイプの突出部を台座の円環部よりも突出させると共に屋外フードを別体にしたので、樹脂テープを巻き付けることが可能となった。
【００１７】
本第４発明は、前記共通の構成に加え、下記の構成を備えている。
すなわち、前記台座は、前記通気パイプの突出部の外周に近接すると共に、前記外壁に近接する背面を持つ円周部を有し、前記円周部の背面と前記外壁との間にはパッキンが介挿され、前記パッキンは所定の形状を有する乾式シール部材からなり、前記止メ具による締結力で前記円周部の背面と前記外壁との間で圧縮されて、前記円周部の背面と前記外壁との間のシールを行い、前記通気パイプの突出部の先端が前記円周部よりも屋外フードに向って突出しており、前記パッキンは、前記円周部の内周縁と前記突出部との間に入り込んで、これらの間をシールすることを特徴とする。
【００１８】
本第４発明では、前記通気パイプの突出部の先端からパッキンを押し込むと、パッキンが屋外側方向に向って曲がるように変形すると共に、前記突出部の外周面との摩擦により、前記パッキンが巻き込まれるようにして、円周部の内周縁と前記突出部との間に圧縮変形しながら入り込んで、これらの間をシールする。また、当該パッキンは、台座を外壁に固定する止メ具を締めることによって、前記円周部の背面と前記外壁との間で圧縮され、前記シールと共に前記台座と前記外壁との間をシールする。
このように１つのパッキンで円周部の背面と前記外壁との間、前記円周部の内周縁と前記突出部との間の２ヵ所のシールを行うことができるから、施工性が著しく向上する。
また、前記円周部の背面と前記外壁との間において、通気パイプの外周面から台座の突条部までパッキンを広い面積にわたって設ければ、断熱効果が高くなる。そのため、外気の状態にかかわらず、通気パイプの外周面あるいは内周面において結露の生じるおそれがない。
【００１９】
本発明において、「乾式シール部材」とは、所定の形状を有するエラストマーであって、所定の部位をシールする部材をいう。なお、エラストマーとは、発泡ゴム、充実ゴムまたは発泡樹脂などからなり、外力が加わると大きく変形し、当該外力を取り除くと、元の形状に復元する部材をいう。
また、湿式シール部材とは、所定の形状を有しない不定形のシール部材であり、一般に、樹脂やゴムからなる。
【００２０】
【発明の実施の形態】
以下、本発明の実施形態を図面にしたがって説明する。
図１ないし図５は本発明の第１実施形態を示す。
図１および図２に示すように、本発明にかかる換気装置は、通気パイプ２、電動ファン３および換気用器具１を備えている。通気パイプ２は、内壁５、通気層８および外壁４を貫通して設けられ、室内Ｉと屋外Ｏとを連通させている。前記通気パイプ２の室内側開口２ａには電動ファン３が設けられており、通気パイプ２の屋外側開口２ｂには、換気用器具１が設けられている。後述するように、室内Ｉの空気Ａは、電動ファン３により通気パイプ２内に送られ、換気用器具１から屋外Ｏに排出される。
なお、通気パイプ２の屋外側は、外壁４から突出する突出部２ｃとなっている。
【００２１】
前記換気用器具１は、互いに別体の台座２２および屋外フード２０を備えている。図３に示すように、台座２２は、外壁４に近接した状態で対向する面（外壁取付面）２５ａを持つベース部２５を備えている。前記ベース部２５には、前記突出部２ｃ（図１）の外周に近接した外嵌部（円周部）２９と前記通気パイプ２の外周と同心円状となる円環部（円周部）２４とが一体に形成されている。
前記円環部２４の外周には、前記円環部２４のまわりを概ね全周にわたって連なる四角い枠状の突条部３１が形成されている。前記円環部２４および前記突条部３１は、前記外壁取付面２５ａから外壁４に向って突出している。
【００２２】
図３の前記台座２２には、該台座２２を前記外壁４に固定するための複数の挿通孔２７が、前記円環部２４と前記突条部３１との間に形成されている。挿通孔２７には、ビスのような締結具６０が挿通され、図２に示すように、台座２２が外壁４に固定される。
【００２３】
前記台座２２を外壁４に固定した状態では、前記通気パイプ２の突出部２ｃの先端は、前記台座２２のベース部２５よりも屋外側に向って突出して露出している。これにより、前記外壁４と通気パイプ２と外嵌部２９と円環部２４との間にはパッキン配置空間３５が形成される。該パッキン配置空間３５には、乾式シール部材からなるパッキン３２が装着され、図１および図２のように、前記通気パイプ２の外周面と前記円環部２４との間をシールしている。
【００２４】
一方、前記締結具６０の締結力によって、前記台座２２と前記外壁４との間で前記パッキン３２が圧縮され、前記台座２２と外壁４との間が、前記通気パイプ２のまわりの全周にわたってシールされる。
前記突条部３１の外周には、湿式のコーキング材３０が充填されている。前記パッキン３２によるシールに加え、前記外壁４と台座２２との間がコーキング材３０によりシールされ、更に防水性を向上させることができる。
【００２５】
図４に示すように、前記屋外フード２０は、正面板部４０、天板部４２および底板部４４を有している。図２に示すように、前記正面板部４０は、前記通気パイプ２の屋外側開口２ｂを外方の正面から覆っている。前記天板部４２および底板部４４は、それぞれ、前記屋外側開口２ｂを上方および下方から覆っている。したがって、前記正面板部４０、天板部４２および底板部４４によって、前記屋外側開口２ｂに臨む空間２０ａが形成されている。
【００２６】
一方、図５の前記屋外フード２０は、左右の端部に上下通路壁面部４６を有している。該上下通路壁面部４６によって、上下に開口する上下用通路２０ｂが形成されている。該一対の上下用通路２０ｂは、前記空間２０ａに連通している。図５（ｃ）に示すように、前記空間２０ａおよび上下用通路２０ｂによって、概ねＨ型の換気用通路が形成される。
【００２７】
図４（ａ）に示すように、前記屋外フード２０には、前記空間２０ａと上下用通路２０ｂとの間に、一対の絞板部４９、４９が設けられている。前記絞板部４９は、正面板部４０、天板部４２および底板部４４から鉛直面に沿って突出しており、前記換気用通路の形状を概ねＨ型に近づけるためのもので、通路用の切欠部４９ａを有している。
【００２８】
図５に示すように、前記正面板部４０には、前記空間２０ａに向って滑らかに、かつ、山形に膨出する案内部４０ａが形成されている。前記案内部４０ａは、鉛直線に沿って前記上下用通路２０ｂと平行に長く形成されている。
図１に示すように、室内Ｉの空気Ａは、前記電動ファン３によって通気パイプ２内に送られた後、屋外フード２０の空間２０ａに導出され、前記山形の案内部４０ａに沿って左右の上下用通路２０ｂに振り分けられた後、図５（ｂ）の上下用通路２０ｂから屋外Ｏ（図１）に排出される。したがって、排気の流れがスムースになる。
【００２９】
前記絞板部４９および上下通路壁面部４６は、その先端部が、それぞれ図３（ａ）に示す台座２２のベース部２５の正面側の面（正面部）２５ｂに設けられた溝状の嵌合部５６、５７および５８に挿入される。
【００３０】
つぎに、本発明にかかる換気装置の施工手順について説明する。
予め通気パイプ２を、外壁４の仕上げ面よりも屋外に向けて突出させておく。この後、台座２２の外嵌部２９を、前記通気パイプ２の突出部２ｃの外周に嵌合させる。この際、パッキン３２を台座２２のパッキン配置空間３５または前記突出部２ｃの外周に予め装着しておく。この状態で、ベース部２５に設けられている挿通孔２７に締結具６０を挿入して、前記突出部２ｃが前記ベース部２５から屋外側に突出した状態で前記台座２２を外壁４に固定する。この固定後、前記突条部３１のまわりにおいて、コーキング材３０を外壁４と台座２２との間に充填する。
【００３１】
前記防水気密処理の完了後、屋外フード２０を取り付ける。屋外フード２０の上下通路壁面部４６に設けられた取付穴５２（図５（ｄ））に挿入したビスを、台座２２に設けられたネジ穴５４（図３（ａ））に螺入して締結する。このように、屋外フード２０と台座２２とがビス止めされているので、屋外フード２０を台座２２に簡単に取り付けることができる。
【００３２】
ところで、前記円環部２４および前記突条部３１は、それぞれベース部２５から外壁に向って突出するように設ける必要はなく、図６（ａ）の変形例に示すように、前記円環部２４と突条部３１とをベース部に一体成型してもよい。
また、図６（ｂ）のように、円環部２４の形状を正面側と外壁側との径が異なる円環状に形成してもよい。これにより、前記円環部２４はテーパを有する。締結具６０を締め込むと、円環部２４のテーパの作用により、パッキン３２が外壁方向および通気パイプ方向の双方向に圧縮される。このため、外壁４と台座２２との間だけでなく、通気パイプ２の外周面と円環部２４との間でも前記パッキン３２がより一層圧縮されるので、前記通気パイプ２の外周面と前記円環部２４との間のシールの防水気密性を高めることができる。
【００３３】
なお、図６の（ａ）および（ｂ）に示すように、前記ベース部２５の正面部２５ｂにおいて、前記突条部３１と前記円環部２４との間にはリブ６２を設けるのが好ましい。該リブ６２を設けることにより、前記ベース部２５のたわみを防止でき、前記締結具６０の締結力を均等に前記ベース部２５に加えることができる。
【００３４】
本実施形態において、パッキン３２は乾式のシール部材からなる。図６（ａ）のように、円環部２４を通気パイプ２と同心円状に形成した場合には、図７（ａ）のように断面形状が方形の発砲樹脂または発砲ゴムからなるパッキン３２を用いる。該パッキン３２は、その内径Ｅｉが通気パイプ２の外径Ｐｏよりも若干小さく形成されている。一方、前記パッキン３２の外径Ｅｏは、前記円環部２４の内径Ｃｉと等しいかまたは若干大きく形成されている。このように、Ｅｉ＜ＰｏおよびＥｏ≧Ｃｉとすることにより、前記パッキン３２が圧縮されて防水気密性を発揮することができる。
【００３５】
図６（ｂ）のようにテーパを有する円環部２４を形成した場合には、断面形状が前記テーパと同様な形状のテーパを有する多角形の発砲樹脂または発砲ゴムを用いる。このパッキン３２の内径をＥｉ、小さい方の幅をＥｍ、大きい方の幅をＥｏとし、通気パイプ２の外径をＰｏ、円環部２４の小さい方の内径をＣｉ、大きい方の内径をＣｏとすると、それらの関係はＥｉ＜Ｐｏ、Ｅｍ≧ＣｉおよびＥｏ＝Ｃｏとなる。
【００３６】
また、図７（ｃ）のように、リップ３３付きの充実ゴムで形成されたパッキン３２を用いてもよい。このようにリップ３３を設ければ、シールすべき隙間の寸法のバラツキを吸収する。
【００３７】
パッキン３２は、エンドレスのものを金型で型成型してもよいが、１本の棒状のパッキンを図７（ｄ），（ｅ）のように繋ぎ目３２０で接合してもよい。
【００３８】
つぎに、本発明の第２および第３実施形態について説明する。
以下の実施形態では、第１実施形態と異なる部分について主に説明し、同一部分または相当部分については同一符号を付して、その詳しい説明を省略する。
【００３９】
図８（ａ）の第２実施形態では、前記ベース部２５とは別体の部材で円環部２４を形成している。該円環部２４は、前記通気パイプ２の突出部２ｃの外周と同心円状となって、前記ベース部２５よりも屋外側において、前記突出部２ｃの外周に設けられている。前記円環部２４を形成している部材は、前記止メ具６０によって前記ベース部２５に締結されている。
【００４０】
前記突出部２ｃの先端は、前記円環部２４よりも屋外側に向って突出して露出しているので、前記円環部２４と前記突出部２ｃとの間に、パッキン配置空間３５が形成される。該パッキン配置空間３５にはパッキン３２が装着され、これにより、前記円環部２４と前記突出部２ｃとの間をシールしている。
【００４１】
一方、前記台座２２のベース部２５には、パッキン装着溝２６が設けられている。該パッキン装着溝２６には、前記パッキン３２とは別の補助パッキン３６が装着されている。前記補助パッキン３６は外壁４と台座２２との間をシールする。
【００４２】
図８（ｂ）は、第２実施形態の他の変形例を示す。
前記円環部２４はベース部２５と一体に形成されている。前記パッキン配置空間３５には、充実ゴムで形成されたＯリング（パッキン）３２が装着され、前記円環部２４と前記突出部２ｃとの間をシールしている。
【００４３】
図９ないし図１１は本発明の第３実施形態を示す。
図１１に示すように、台座２２には、ベース部２５と円環部２４とが一体に形成されている。前記円環部２４は、屋外側に向って突出しており、前記突出部２ｃ（図９）の外周に嵌合するように、前記通気パイプ２の突出部２ｃの外周面に近接している。
【００４４】
前記円環部２４は、前記突出部２ｃよりも短く形成されており、前記突出部２ｃの先端は、前記円環部２４よりも屋外側に向って突出して露出している。これにより、図９および図１０に示すように、前記円環部２４と前記突出部２ｃに、樹脂テープ３４を巻き付けることができる。すなわち、外壁４の外側において、前記円環部２４と前記突出部２ｃとの間の防水気密処理が容易かつ、確実に行える。樹脂テープ３４は、たとえばブチルテープなどからなり粘着性を有する。
【００４５】
図１２ないし図１５は本発明の第４実施形態を示す。
図１４（ｂ）に示すように、台座２２は、円周部２９を有している。円周部２９は、通気パイプ２の突出部２ｃの外周面に近接すると共に、外壁４に近接する背面２８を備えている。前記円周部２９のまわりには、環状の突条部３１が、外壁４に向って突出するように形成されている。前記外壁４と前記円周部２９の背面２８と前記突条部３１とで形成されるパッキン配置空間３５には、板状のパッキン３２が装着される。
【００４６】
図１４（ｂ）の前記パッキン３２には、前記通気パイプの外周と同心円状で、かつ、無負荷状態において前記通気パイプ２の外径よりも小さい内径の挿通孔３２ａが形成されている。そのため、図１２の前記パッキン配置空間３５に装着される前記パッキン３２の一部は、図１３（ａ）および図１４（ａ）のように、前記円周部２９の内周縁２９ａよりも径方向の内側に若干突出している。前記円周部２９の内周縁２９ａは、パッキン装着側に図１３（ａ）のテーパ部２９ｂを有している。該テーパ部２９ｂは、外壁４に向かうに従って、径大に形成されており、これにより、図１３（ｄ）のように、パッキン３２が断面Ｌ字型に折れ曲がって変形し易くなっている。
【００４７】
施工時には、前記パッキン３２を予め装着した台座２２を、前記円周部２９が前記通気パイプ２の突出部２ｃに外嵌するように取り付ける。前記通気パイプ２の外径は、前記パッキン３２の挿通孔３２ａの内径よりも大きいので、図１３（ｂ）のように、前記通気パイプ２の先端が前記内周縁２９ａよりも径方向の内側に突出しているパッキン３２の一部に接触する。このパッキン接触状態から台座２２を押し込んでゆくと、前記通気パイプ２の先端により前記パッキン３２が屋外側に向って押される。そのため、図１３（ｃ）のように、前記パッキン３２が、前記テーパ部２９ｂに沿って屋外側に折れ曲がって変形する。
【００４８】
図１３（ｃ）のパッキン曲折状態から、台座２２を更に押し込むと、前記突出部２ｃの外周面との摩擦により、前記パッキン３２が屋外側に引っ張られる。これにより、図１３（ｄ）のように、前記パッキン３２が、前記円周部２９の内周縁２９ａと前記突出部２ｃの外周面との間の隙間に、断面Ｌ字型に折れ曲がって更に入り込む。この後、前記パッキン３２が外壁４に接触するまで、台座２２を更に押し込む。
【００４９】
図１２に示すように、前記台座２２は、止メ具６０により外壁４に固定される。前記止メ具６０を締めると、前記パッキン３２が、前記外壁４と前記円周部２９の背面２８との間で圧縮される。これにより、前記外壁４と前記台座２２との間が、前記通気パイプ２のまわりの全周にわたってシールされる。
【００５０】
一方、前記台座２２を外壁４に固定した状態では、前記突出部２ｃの先端は、前記台座２２の円周部２９よりも屋外側に向って突出しており、前記隙間に入り込んだパッキン３２は、前記円周部２９の内周縁２９ａと前記突出部２ｃの外周面との間で圧縮されている。また、前記止メ具６０の締結力により、前記パッキン３２は、通気パイプ２の径方向にも圧縮変形するから、前記パッキン３２の接触面圧が更に大きくなる。そのため、前記パッキン３２により、前記円周部２９の内周縁２９ａと前記突出部２ｃの外周面との間がシールされる。
なお、当該シールを確実に行うためには、前記隙間に入り込んだパッキン３２を、前記通気パイプ２のまわりの全周にわたって、前記円周部２９よりも屋外側に若干はみ出すようにするのが望ましい。
【００５１】
以上のように、第４実施形態においては、１つのパッキン３２により２ヵ所のシールを行うことができるから、施工性に優れている。特に、パッキン３２が、前記円周部２９の内周縁２９ａと前記突出部２ｃの外周面との間に入り込むように断面Ｌ字型に折れ曲がって変形するようにすれば、施工性を著しく向上させることができる。
また、パッキン３２は、板状のシートパッキンを所定幅に切断し、所定の挿通孔３２ａを打ち抜くようにすれば、パッキンの成型コストを安くすることができる。
また、前記突条部３１は、パッキン３２の外周を位置決めすると共に、前記突条部３１の外周にコーキング材３０を充填する際のストッパとしても作用し、施工を容易かつ確実なものとするのに役立つ。
【００５２】
第４実施形態にかかる屋外フード２０には、図１５に示すように、前記絞板部４９の側面に、防虫・防鳥用の網（図示せず）を装着するための溝４９ｂが設けられている。また、前記屋外フード２０の上下通路壁面部４６の先端部には、上下用通路２ｂに向って突出する被案内部４６ａが設けられている。該被案内部４６ａを、図１４（ａ）の台座２２に設けられたガイド溝５５に沿って、上下方向にスライドさせるようにすれば、前記屋外フード２０の取り付けが簡単になり、更に施工性を向上させることができる。
【００５３】
なお、第４実施形態において、図１６のように、前記円周部２９を前記突出部２ｃ（通気パイプ２）の外周面に沿って近接するように、屋外側に向って湾曲する湾曲部２９ｃを持つように形成すれば、前記パッキン３２が前記湾曲部２９ｃに沿って変形し易くなる。すなわち、前記パッキン３２が前記円周部２９の内周面と前記突出部２ｃの外周面との間に入り込み易くなる上、前記パッキン３２の圧縮面積が大きくなるから、シールの信頼性が向上する。
また、前記パッキン３２は、Ｌ字型断面を持つように予め成型されたパッキンを用いるようにしてもよい。
【００５４】
以上のとおり、図面を参照しながら好適な実施形態を説明したが、当業者であれば、本明細書を見て、自明な範囲で種々の変更および修正を容易に想定するであろう。
たとえば、前記第１実施形態では、本発明にかかる換気用器具を２つのパーツ（台座と屋外フード）で形成し、前記第２実施形態では、円環部を形成する部材を含め３つのパ−ツで形成したが、前記換気用器具は、４つ以上のパーツで構成してもよい。
また、前記換気用器具は合成樹脂ではなく、金属で形成してもよい。
また、屋外フードの形状は前記実施形態において示した形状に限定されず、たとえば、Ｈ型の通路を有している必要はない。
また、室内側の電動ファンは必ずしも設ける必要がない。
したがって、そのような変更および修正は、請求の範囲から定まる本発明の範囲内のものと解釈される。
【００５５】
【発明の効果】
以上説明したように本発明は、外壁の外側において、通気パイプと台座との間に設けたパッキンにより防水気密処理を行うことができる。そのため、湿式のコーキングに比べ、作業員がシール作業に熟練していなくても、外壁と通気パイプと台座との間のシールを容易かつ確実に行うことができるから、凍害を防止し得ると共に、施工性が向上する。
【図面の簡単な説明】
【図１】本発明の第１実施形態を示す平面断面図である。
【図２】同縦断面図である。
【図３】同換気用器具の台座を示す斜視図である。
【図４】同換気用器具の屋外フードを示す斜視図である。
【図５】（ａ）は同屋外フードを示す正面図、（ｂ）は底面図、（ｃ）は断面図、（ｄ）は側面図である。
【図６】同変形例の要部を拡大して示す断面図である。
【図７】（ａ）、（ｂ）および（ｃ）は同変形例にかかるパッキンを示す部分断面図、（ｄ）および（ｅ）は同正面図である。
【図８】（ａ）は第２実施形態の要部を拡大して示す断面図、（ｂ）は同変形例の要部を拡大して示す断面図である。
【図９】本発明の第３実施形態を示す平面断面図である。
【図１０】同縦断面図である。
【図１１】同換気用器具の台座を示す斜視図である。
【図１２】本発明の第４実施形態を示す平面断面図である。
【図１３】同シール構造の要部を拡大して示す部分断面図である。
【図１４】同換気用器具の台座を示す斜視図である。
【図１５】同屋外フードの変形例を示す斜視図である。
【図１６】同台座の変形例の要部を拡大して示す断面図である。
【図１７】従来の換気装置の接続構造を示す断面図である。
【図１８】他の従来の換気装置の接続構造を示す断面図である。
【符号の説明】
１：換気用器具
２：通気パイプ
４：外壁
２０：屋外フード
２０ｂ：上下用通路
２２：台座
２４：円環部（円周部）
２５：ベース部
２９：外嵌部（円周部）
３２：パッキン
３５：パッキン配置空間
Ａ：室内の空気
Ｉ：室内
Ｏ：屋外[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connection structure for a ventilation device.
[0002]
[Prior art and its disadvantages]
FIG. 17 shows an example of a connection structure of a conventional ventilation device.
In FIG. 17, a ventilation device including a ventilation pipe 2, a ventilation fan 3, and an outdoor hood (ventilation device) 100 is provided. The ventilation pipe 2 is provided to penetrate the inner wall 5 and forms a part of the ventilation passage 10. A ventilation fan 3 is provided in the indoor opening 2a of the ventilation pipe 2. On the other hand, the insertion portion 1d of the outdoor hood 100 is inserted into the outdoor side opening 2b of the ventilation pipe 2.
[0003]
At this time, the caulking material 6 is attached around the insertion portion 1d of the outdoor hood 100 at the time of construction, and inserted into the ventilation pipe 2 to seal the insertion portion 1d and the ventilation pipe 2. However, there is a possibility that rainwater or the like flowing through the ventilation layer 8 may enter the inside of the ventilation pipe 2 due to uneven application of the caulking material 6 or deterioration over time. Further, in the winter season, the humid air in the room penetrates into the ventilation layer 8 through the caulking material 6 and forms dew inside the ventilation layer 8, and water drops freeze on the back side of the outer wall 4, thereby causing the wall surface to be frozen. There is a risk of damage.
[0004]
Therefore, a connection structure for solving such a disadvantage is disclosed in Japanese Patent Application Laid-Open No. Hei 9-166341. FIG. 18 shows such a connection structure.
[0005]
In FIG. 18, the ventilation pipe 2 penetrates the outer wall 4 to allow communication between the indoor side and the outdoor side, and has a protruding portion 2 c protruding to the outdoor side. A guide tube 14 is fitted on the protrusion 2c. A slight gap is provided between the protruding portion 2c and the guide pipe 14, and the gap is filled with a caulking material to seal between the ventilation pipe 2 and the ventilation device 100.
[0006]
However, according to the prior art, it is difficult to fill the caulking material between the ventilation pipe 2 and the guide tube 14, so that the skill of the caulking material filling operation is required, so that the sealing tends to be incomplete.
In addition, the seal between the outer wall 4 and the ventilation device 100 may be incomplete.
[0007]
Therefore, a main object of the present invention is to prevent the frost damage and improve the workability by making it possible to easily and surely perform the airtight and waterproof treatment of the seal between the ventilation pipe and the ventilation device.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the first, second, third and fourth inventions provide a ventilation pipe penetrating an outer wall and communicating between an indoor side and an outdoor side, and connect one end of the ventilation pipe to the outdoor side. In the connection structure of a ventilation device in which the ventilation device is provided at the protruding portion, the ventilation device includes a pedestal and an outdoor hood which are separate from each other, and the pedestal faces in a state close to the outer wall. The outdoor hood has a front plate portion that covers the outdoor opening of the ventilation pipe from the outside front, and the pedestal is fixed to the outer wall with a stopper. What is done is a common configuration.
[0009]
In the above-described common configuration, the present invention provides that the pedestal and the outdoor hood are separate from each other, so that the outdoor hood can be attached after attaching the pedestal to the outer wall. Can be easily sealed by packing or resin tape.
[0010]
The first invention has the following configuration in addition to the common configuration.
That is, the pedestal has a circumferential portion close to the outer periphery of the protruding portion of the ventilation pipe, and a packing is arranged between the outer wall and the protruding portion of the ventilation pipe and the circumferential portion of the pedestal. An annular packing arrangement space is formed, and the packing is formed of a dry seal member having a predetermined shape, and seals between the circumferential portion and the outer peripheral surface of the ventilation pipe.
[0011]
In the first invention, a packing arrangement space for disposing a packing is formed between the outer wall, the protruding portion of the ventilation pipe, and the circumferential portion of the pedestal. Therefore, a packing made of a dry-type sealing member can be mounted in advance on the packing arrangement space or the outer peripheral surface of the ventilation pipe to seal the outer peripheral surface of the ventilation pipe and the circumferential portion. improves.
[0012]
Further, the packing is compressed between the pedestal and the outer wall by tightening a fixing member for fixing the pedestal to the outer wall, and performs the seal between the pedestal and the outer wall together with the seal. Therefore, even if the worker is not skilled in the sealing operation, the sealing between the outer wall, the ventilation pipe, and the ventilation device can be easily and reliably performed.
[0013]
The second invention has the following configuration in addition to the common configuration.
That is, in the base portion, an annular portion that is concentric with the outer periphery of the protruding portion of the ventilation pipe is provided on the outer periphery of the protruding portion, and a space between the annular portion and the protruding portion includes There is provided a packing for sealing between them, and the packing is formed of a dry seal member having a predetermined shape, and a tip of the protruding portion is protruded and exposed from the annular portion.
[0014]
According to the second aspect of the present invention, the packing is compressed in the space between the annular portion and the protruding portion to seal between the pedestal and the ventilation pipe. It can be carried out.
In addition, since the projecting portion of the ventilation pipe projects outward from the annular portion of the pedestal, it is also possible to easily confirm that the construction is not in a state of poor construction in which the ventilation pipe does not project.
[0015]
The third invention has the following configuration in addition to the common configuration.
That is, in the base portion, an annular portion close to the outer peripheral surface of the protruding portion of the ventilation pipe is provided on the outer periphery of the protruding portion, and the tip of the protruding portion protrudes from the annular portion and is exposed. A seal is formed between the ventilation pipe and the base by the resin tape being wound and adhered in an annular shape so as to straddle between the annular portion and the protruding portion. It is characterized by the following.
[0016]
In the third aspect of the invention, the resin tape is wound around the annular portion of the pedestal and the projection of the ventilation pipe in an annular manner to seal between the pedestal and the ventilation pipe. Sealing can be performed easily and reliably.
In particular, since the projecting portion of the ventilation pipe is made to project from the annular portion of the pedestal and the outdoor hood is made separate, it is possible to wind a resin tape.
[0017]
The fourth invention has the following configuration in addition to the common configuration.
That is, the pedestal has a circumferential portion having a back surface close to the outer wall while being close to the outer periphery of the protruding portion of the ventilation pipe, and a packing is provided between the back surface of the circumferential portion and the outer wall. Interposed, the packing is formed of a dry-type sealing member having a predetermined shape, and is compressed between the back surface of the circumferential portion and the outer wall by a fastening force of the fastener, and the back surface of the circumferential portion is Sealing between the outer wall, the tip of the protruding portion of the ventilation pipe protrudes toward the outdoor hood than the circumferential portion, the packing, the inner peripheral edge of the circumferential portion and the protruding portion It is characterized in that it enters between and seals between them.
[0018]
In the fourth aspect of the present invention, when the packing is pushed in from the tip of the protrusion of the ventilation pipe, the packing is deformed so as to bend toward the outdoor side, and the packing is entangled by friction with the outer peripheral surface of the protrusion. In this way, it enters between the inner peripheral edge of the circumferential portion and the protruding portion while being compressed and deformed, and seals the gap therebetween. Further, the packing is compressed between the back surface of the circumferential portion and the outer wall by tightening a fixing member for fixing the pedestal to the outer wall, and seals between the pedestal and the outer wall together with the seal. .
In this way, one seal can seal two places between the back surface of the circumferential portion and the outer wall, and between the inner circumferential edge of the circumferential portion and the projecting portion, thereby significantly improving workability. I do.
Further, if a packing is provided over a wide area from the outer peripheral surface of the ventilation pipe to the ridge of the pedestal between the back surface of the circumferential portion and the outer wall, the heat insulating effect is enhanced. Therefore, regardless of the state of the outside air, there is no possibility that dew condensation will occur on the outer peripheral surface or the inner peripheral surface of the ventilation pipe.
[0019]
In the present invention, the “dry seal member” refers to a member that is an elastomer having a predetermined shape and seals a predetermined portion. Note that the elastomer is a member made of foamed rubber, solid rubber, foamed resin, or the like, which greatly deforms when an external force is applied, and restores its original shape when the external force is removed.
The wet seal member is an irregular-shaped seal member having no predetermined shape, and is generally made of resin or rubber.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of the present invention.
As shown in FIGS. 1 and 2, the ventilation device according to the present invention includes a ventilation pipe 2, an electric fan 3, and a ventilation device 1. The ventilation pipe 2 is provided so as to penetrate the inner wall 5, the ventilation layer 8, and the outer wall 4, and connects the indoor I and the outdoor O. An electric fan 3 is provided in an indoor opening 2a of the ventilation pipe 2, and a ventilation device 1 is provided in an outdoor opening 2b of the ventilation pipe 2. As will be described later, the air A in the room I is sent into the ventilation pipe 2 by the electric fan 3 and discharged from the ventilation device 1 to the outside O.
The outdoor side of the ventilation pipe 2 is a protruding portion 2 c protruding from the outer wall 4.
[0021]
The ventilation device 1 includes a pedestal 22 and an outdoor hood 20 that are separate from each other. As shown in FIG. 3, the pedestal 22 includes a base portion 25 having a surface (outer wall mounting surface) 25 a facing the outer wall 4 in a state of being close to the outer wall 4. The base portion 25 has an outer fitting portion (circumferential portion) 29 close to the outer periphery of the protruding portion 2c (FIG. 1) and an annular portion (circumferential portion) 24 concentric with the outer periphery of the ventilation pipe 2. Are integrally formed.
On the outer periphery of the annular portion 24, a rectangular frame-shaped ridge portion 31 is formed which extends around the entire circumference of the annular portion 24. The annular portion 24 and the protruding ridge portion 31 project from the outer wall mounting surface 25a toward the outer wall 4.
[0022]
A plurality of insertion holes 27 for fixing the pedestal 22 to the outer wall 4 are formed in the pedestal 22 of FIG. 3 between the annular portion 24 and the ridge 31. A fastener 60 such as a screw is inserted into the insertion hole 27, and the pedestal 22 is fixed to the outer wall 4 as shown in FIG.
[0023]
When the pedestal 22 is fixed to the outer wall 4, the tip of the protruding portion 2 c of the ventilation pipe 2 protrudes outside the base portion 25 of the pedestal 22 and is exposed. Thereby, a packing arrangement space 35 is formed between the outer wall 4, the ventilation pipe 2, the outer fitting portion 29, and the annular portion 24. A packing 32 made of a dry seal member is mounted in the packing arrangement space 35, and seals between the outer peripheral surface of the ventilation pipe 2 and the annular portion 24 as shown in FIGS.
[0024]
On the other hand, the packing 32 is compressed between the pedestal 22 and the outer wall 4 by the fastening force of the fastener 60, and the space between the pedestal 22 and the outer wall 4 is formed over the entire circumference around the ventilation pipe 2. Sealed.
The outer periphery of the ridge 31 is filled with a wet caulking material 30. In addition to the sealing by the packing 32, the space between the outer wall 4 and the pedestal 22 is sealed by the caulking material 30, so that the waterproofness can be further improved.
[0025]
As shown in FIG. 4, the outdoor hood 20 has a front plate portion 40, a top plate portion 42, and a bottom plate portion 44. As shown in FIG. 2, the front plate portion 40 covers the outdoor opening 2b of the ventilation pipe 2 from the front outside. The top plate portion 42 and the bottom plate portion 44 cover the outdoor opening 2b from above and below, respectively. Therefore, the front plate portion 40, the top plate portion 42, and the bottom plate portion 44 form a space 20a facing the outdoor side opening 2b.
[0026]
On the other hand, the outdoor hood 20 of FIG. 5 has upper and lower passage wall portions 46 at left and right ends. The up / down passage wall portion 46 forms an up / down passage 20b that opens vertically. The pair of vertical passages 20b communicates with the space 20a. As shown in FIG. 5 (c), the space 20a and the vertical passage 20b form a substantially H-shaped ventilation passage.
[0027]
As shown in FIG. 4A, the outdoor hood 20 is provided with a pair of throttle plates 49, 49 between the space 20a and the vertical passage 20b. The throttle plate portion 49 protrudes along the vertical plane from the front plate portion 40, the top plate portion 42, and the bottom plate portion 44, and is for approximating the shape of the ventilation passage substantially to an H-shape. It has a notch 49a.
[0028]
As shown in FIG. 5, the front plate portion 40 is formed with a guide portion 40a that smoothly and swells toward the space 20a. The guide portion 40a is formed to be long in parallel with the vertical passage 20b along a vertical line.
As shown in FIG. 1, after the air A in the room I is sent into the ventilation pipe 2 by the electric fan 3, the air A is led out to the space 20a of the outdoor hood 20, and the air A in the right and left along the chevron guide 40a. After being distributed to the up-and-down passage 20b, it is discharged from the up-and-down passage 20b in FIG. 5B to the outside O (FIG. 1). Therefore, the flow of the exhaust gas is smooth.
[0029]
The aperture plate portion 49 and the upper and lower passage wall portions 46 have groove-shaped fittings each having a distal end provided on a front surface (front portion) 25b of the base portion 25 of the pedestal 22 shown in FIG. It is inserted into the joints 56, 57 and 58.
[0030]
Next, a procedure for installing the ventilation device according to the present invention will be described.
The ventilation pipe 2 is made to project in advance outside the finished surface of the outer wall 4 in advance. Thereafter, the outer fitting portion 29 of the pedestal 22 is fitted to the outer periphery of the projecting portion 2c of the ventilation pipe 2. At this time, the packing 32 is previously mounted on the packing arrangement space 35 of the pedestal 22 or the outer periphery of the protruding portion 2c. In this state, the fasteners 60 are inserted into the insertion holes 27 provided in the base portion 25, and the pedestal 22 is fixed to the outer wall 4 with the protrusions 2c protruding outside from the base portion 25. . After the fixing, the caulking material 30 is filled between the outer wall 4 and the pedestal 22 around the ridge 31.
[0031]
After the completion of the waterproof and airtight treatment, the outdoor hood 20 is attached. The screw inserted into the mounting hole 52 (FIG. 5D) provided in the vertical passage wall portion 46 of the outdoor hood 20 is screwed into the screw hole 54 (FIG. 3A) provided in the pedestal 22. To conclude. As described above, since the outdoor hood 20 and the pedestal 22 are screwed, the outdoor hood 20 can be easily attached to the pedestal 22.
[0032]
Incidentally, the annular portion 24 and the ridge portion 31 need not be provided so as to project from the base portion 25 toward the outer wall, respectively, and as shown in a modified example of FIG. The base 24 and the ridge 31 may be integrally formed.
Further, as shown in FIG. 6B, the shape of the annular portion 24 may be formed in an annular shape having different diameters on the front side and the outer wall side. Thus, the annular portion 24 has a taper. When the fastener 60 is tightened, the packing 32 is compressed in both directions in the direction of the outer wall and the direction of the ventilation pipe by the action of the taper of the annular portion 24. For this reason, the packing 32 is further compressed not only between the outer wall 4 and the pedestal 22 but also between the outer peripheral surface of the ventilation pipe 2 and the annular portion 24. The waterproof airtightness of the seal with the annular portion 24 can be improved.
[0033]
As shown in FIGS. 6A and 6B, it is preferable to provide a rib 62 between the ridge 31 and the annular portion 24 on the front surface 25b of the base 25. . By providing the ribs 62, the deflection of the base portion 25 can be prevented, and the fastening force of the fasteners 60 can be evenly applied to the base portion 25.
[0034]
In the present embodiment, the packing 32 is formed of a dry seal member. When the annular portion 24 is formed concentrically with the ventilation pipe 2 as shown in FIG. 6A, the packing 32 made of foamed resin or rubber having a square cross section as shown in FIG. Used. The inner diameter Ei of the packing 32 is slightly smaller than the outer diameter Po of the ventilation pipe 2. On the other hand, the outer diameter Eo of the packing 32 is formed equal to or slightly larger than the inner diameter Ci of the annular portion 24. As described above, by setting Ei <Po and Eo ≧ Ci, the packing 32 can be compressed to exhibit waterproof airtightness.
[0035]
When the annular portion 24 having a taper is formed as shown in FIG. 6B, a polygonal foaming resin or rubber having a tapered cross section similar to the taper is used. The inner diameter of the packing 32 is Ei, the smaller width is Em, the larger width is Eo, the outer diameter of the ventilation pipe 2 is Po, the smaller inner diameter of the annular portion 24 is Ci, and the larger inner diameter is Co. Then, these relationships are Ei <Po, Em ≧ Ci, and Eo = Co.
[0036]
Further, as shown in FIG. 7C, a packing 32 formed of solid rubber with a lip 33 may be used. Providing the lip 33 in this way absorbs variations in the size of the gap to be sealed.
[0037]
As the packing 32, an endless packing may be molded by a metal mold, but one rod-shaped packing may be joined at a joint 320 as shown in FIGS. 7 (d) and 7 (e).
[0038]
Next, second and third embodiments of the present invention will be described.
In the following embodiments, portions different from those of the first embodiment will be mainly described, and the same or corresponding portions will be denoted by the same reference numerals and detailed description thereof will be omitted.
[0039]
In the second embodiment shown in FIG. 8A, the annular portion 24 is formed by a member separate from the base portion 25. The annular portion 24 is concentric with the outer periphery of the protruding portion 2c of the ventilation pipe 2, and is provided on the outer periphery of the protruding portion 2c on the outdoor side with respect to the base portion 25. The member forming the annular portion 24 is fastened to the base portion 25 by the stopper 60.
[0040]
Since the tip of the protruding portion 2c protrudes toward the outdoor side from the annular portion 24 and is exposed, a packing arrangement space 35 is formed between the annular portion 24 and the protruding portion 2c. You. The packing 32 is mounted in the packing arrangement space 35, thereby sealing between the annular portion 24 and the protruding portion 2c.
[0041]
On the other hand, the base portion 25 of the pedestal 22 is provided with a packing mounting groove 26. An auxiliary packing 36 different from the packing 32 is mounted in the packing mounting groove 26. The auxiliary packing 36 seals between the outer wall 4 and the pedestal 22.
[0042]
FIG. 8B shows another modification of the second embodiment.
The annular part 24 is formed integrally with the base part 25. An O-ring (packing) 32 made of solid rubber is mounted in the packing arrangement space 35 to seal between the annular portion 24 and the protruding portion 2c.
[0043]
9 to 11 show a third embodiment of the present invention.
As shown in FIG. 11, a base portion 25 and a ring portion 24 are integrally formed on the pedestal 22. The annular portion 24 protrudes toward the outdoor side, and is close to the outer peripheral surface of the protruding portion 2c of the ventilation pipe 2 so as to fit on the outer circumference of the protruding portion 2c (FIG. 9).
[0044]
The annular portion 24 is formed to be shorter than the projecting portion 2c, and the tip of the projecting portion 2c projects outward from the annular portion 24 and is exposed. Thereby, as shown in FIGS. 9 and 10, the resin tape 34 can be wound around the annular portion 24 and the protruding portion 2c. That is, the waterproof and airtight treatment between the annular portion 24 and the protruding portion 2c can be easily and reliably performed outside the outer wall 4. The resin tape 34 is made of, for example, a butyl tape and has an adhesive property.
[0045]
12 to 15 show a fourth embodiment of the present invention.
As shown in FIG. 14B, the pedestal 22 has a circumferential portion 29. The circumferential portion 29 has a back surface 28 that is close to the outer peripheral surface of the protrusion 2 c of the ventilation pipe 2 and close to the outer wall 4. An annular ridge 31 is formed around the circumference 29 so as to protrude toward the outer wall 4. A plate-shaped packing 32 is mounted in a packing arrangement space 35 formed by the outer wall 4, the back surface 28 of the circumferential portion 29, and the ridge 31.
[0046]
In the packing 32 of FIG. 14B, an insertion hole 32a concentric with the outer periphery of the ventilation pipe and having an inner diameter smaller than the outer diameter of the ventilation pipe 2 in a no-load state is formed. Therefore, as shown in FIGS. 13A and 14A, a part of the packing 32 mounted in the packing arrangement space 35 of FIG. 12 is more radial than the inner peripheral edge 29 a of the circumferential portion 29. Slightly protrudes inside. The inner peripheral edge 29a of the circumferential portion 29 has a tapered portion 29b shown in FIG. The tapered portion 29b is formed to have a larger diameter toward the outer wall 4, so that the packing 32 is easily bent and deformed into an L-shaped cross section as shown in FIG. 13D.
[0047]
At the time of construction, the pedestal 22 to which the packing 32 has been attached in advance is attached so that the circumferential portion 29 is fitted to the protrusion 2 c of the ventilation pipe 2. Since the outer diameter of the ventilation pipe 2 is larger than the inner diameter of the insertion hole 32a of the packing 32, as shown in FIG. 13B, the tip of the ventilation pipe 2 is located radially inward of the inner peripheral edge 29a. It contacts a part of the packing 32 which protrudes. When the pedestal 22 is pushed in from the packing contact state, the packing 32 is pushed toward the outdoor side by the tip of the ventilation pipe 2. Therefore, as shown in FIG. 13C, the packing 32 is bent and deformed to the outdoor side along the tapered portion 29b.
[0048]
When the pedestal 22 is further pushed in from the bent packing state of FIG. 13C, the packing 32 is pulled to the outdoor side due to friction with the outer peripheral surface of the protruding portion 2c. As a result, as shown in FIG. 13D, the packing 32 bends into an L-shaped cross section and further enters the gap between the inner peripheral edge 29a of the circumferential portion 29 and the outer peripheral surface of the protruding portion 2c. . Thereafter, the pedestal 22 is further pushed in until the packing 32 comes into contact with the outer wall 4.
[0049]
As shown in FIG. 12, the pedestal 22 is fixed to the outer wall 4 by a stopper 60. When the stopper 60 is tightened, the packing 32 is compressed between the outer wall 4 and the back surface 28 of the circumferential portion 29. Thereby, the space between the outer wall 4 and the pedestal 22 is sealed over the entire circumference around the ventilation pipe 2.
[0050]
On the other hand, in a state where the pedestal 22 is fixed to the outer wall 4, the tip of the protruding portion 2 c protrudes more outward than the circumferential portion 29 of the pedestal 22, and the packing 32 that has entered the gap is It is compressed between the inner peripheral edge 29a of the circumferential portion 29 and the outer peripheral surface of the projecting portion 2c. Further, the packing 32 is compressed and deformed in the radial direction of the ventilation pipe 2 by the fastening force of the stopper 60, so that the contact surface pressure of the packing 32 is further increased. Therefore, the seal between the inner peripheral edge 29a of the circumferential portion 29 and the outer peripheral surface of the protruding portion 2c is sealed by the packing 32.
In order to reliably perform the sealing, it is desirable that the packing 32 that has entered the gap slightly protrudes outside the circumferential portion 29 over the entire circumference around the ventilation pipe 2. .
[0051]
As described above, in the fourth embodiment, since two seals can be performed by one packing 32, the workability is excellent. In particular, if the packing 32 is bent and deformed into an L-shaped cross section so as to enter between the inner peripheral edge 29a of the circumferential portion 29 and the outer peripheral surface of the protruding portion 2c, the workability is significantly improved. be able to.
Further, the packing 32 can be formed by cutting a plate-shaped sheet packing into a predetermined width and punching out a predetermined insertion hole 32a, so that the molding cost of the packing can be reduced.
In addition, the ridges 31 position the outer periphery of the packing 32 and also act as stoppers for filling the outer periphery of the ridges 31 with the caulking material 30 to facilitate and secure the construction. Help.
[0052]
In the outdoor hood 20 according to the fourth embodiment, as shown in FIG. 15, a groove 49 b for mounting an insect / bird-proof net (not shown) is provided on a side surface of the aperture plate 49. ing. Further, a guided portion 46a protruding toward the vertical passage 2b is provided at a distal end portion of the vertical passage wall portion 46 of the outdoor hood 20. If the guided portion 46a is slid up and down along the guide groove 55 provided in the pedestal 22 of FIG. 14A, the installation of the outdoor hood 20 is simplified, and the workability is further improved. Can be improved.
[0053]
In the fourth embodiment, as shown in FIG. 16, a curved portion 29c that curves toward the outdoor side so that the circumferential portion 29 approaches the outer peripheral surface of the protruding portion 2c (the ventilation pipe 2). If formed, the packing 32 is easily deformed along the curved portion 29c. That is, the packing 32 easily enters between the inner peripheral surface of the circumferential portion 29 and the outer peripheral surface of the protruding portion 2c, and the packing area of the packing 32 increases, thereby improving the reliability of the seal. .
Further, as the packing 32, a packing molded in advance so as to have an L-shaped cross section may be used.
[0054]
As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will easily envisage various changes and modifications within the obvious scope upon reading this specification.
For example, in the first embodiment, the ventilation device according to the present invention is formed of two parts (a pedestal and an outdoor hood), and in the second embodiment, three parts including a member forming an annular portion are formed. Although formed as a single piece, the ventilation device may be composed of four or more parts.
Further, the ventilation device may be formed of metal instead of synthetic resin.
Further, the shape of the outdoor hood is not limited to the shape shown in the above embodiment, and for example, it is not necessary to have an H-shaped passage.
Further, the electric fan on the indoor side does not always need to be provided.
Accordingly, such changes and modifications are to be construed as being within the scope of the invention as defined by the appended claims.
[0055]
【The invention's effect】
As described above, according to the present invention, the waterproof and airtight treatment can be performed outside the outer wall by the packing provided between the ventilation pipe and the pedestal. Therefore, compared to wet caulking, even if the worker is not skilled in sealing work, since the sealing between the outer wall, the ventilation pipe and the pedestal can be performed easily and reliably, frost damage can be prevented, Workability is improved.
[Brief description of the drawings]
FIG. 1 is a plan sectional view showing a first embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the same.
FIG. 3 is a perspective view showing a pedestal of the ventilation device.
FIG. 4 is a perspective view showing an outdoor hood of the ventilation device.
5A is a front view showing the outdoor hood, FIG. 5B is a bottom view, FIG. 5C is a sectional view, and FIG. 5D is a side view.
FIG. 6 is an enlarged sectional view showing a main part of the modification.
FIGS. 7A, 7B and 7C are partial sectional views showing a packing according to the modification, and FIGS. 7D and 7E are front views thereof.
FIG. 8A is a cross-sectional view showing an enlarged main part of the second embodiment, and FIG. 8B is a cross-sectional view showing an enlarged main part of the modification.
FIG. 9 is a plan sectional view showing a third embodiment of the present invention.
FIG. 10 is a longitudinal sectional view of the same.
FIG. 11 is a perspective view showing a pedestal of the ventilation device.
FIG. 12 is a plan sectional view showing a fourth embodiment of the present invention.
FIG. 13 is an enlarged partial cross-sectional view showing a main part of the seal structure.
FIG. 14 is a perspective view showing a pedestal of the ventilation device.
FIG. 15 is a perspective view showing a modification of the outdoor hood.
FIG. 16 is an enlarged sectional view showing a main part of a modification of the pedestal.
FIG. 17 is a cross-sectional view showing a connection structure of a conventional ventilation device.
FIG. 18 is a cross-sectional view showing a connection structure of another conventional ventilation device.
[Explanation of symbols]
1: Ventilation device 2: Ventilation pipe 4: Outer wall 20: Outdoor hood 20b: Up / down passage 22: Pedestal 24: Annular part (circumferential part)
25: Base part 29: External fitting part (circumferential part)
32: Packing 35: Packing arrangement space A: Indoor air I: Indoor O: Outdoor

Claims

In a connection structure for a ventilation device, a ventilation pipe is provided to penetrate an outer wall and communicate between an indoor side and an outdoor side, and one end of the ventilation pipe is protruded to the outdoor side, and a ventilation device is provided at the projection.
The ventilation device includes a pedestal and an outdoor hood separate from each other,
The pedestal includes a base having a surface facing the outer wall in a state close to the outer wall,
The outdoor hood includes a front plate portion that covers an outdoor opening of the ventilation pipe from an outside front,
The pedestal is fixed to the outer wall by a stopper,
The pedestal has a circumferential portion close to the outer periphery of the protrusion of the ventilation pipe,
An annular packing arrangement space for arranging packing is formed between the outer wall, the protrusion of the ventilation pipe, and the circumference of the pedestal,
The connection structure of a ventilation device, wherein the packing is formed of a dry seal member having a predetermined shape, and performs sealing between the circumferential portion and the outer peripheral surface of the ventilation pipe.

A connection structure of a ventilation device, wherein a ventilation pipe penetrating an outer wall and communicating between the indoor side and the outdoor side is provided, one end of the ventilation pipe is protruded to the outdoor side, and a ventilation device is provided at the protrusion.
The ventilation device includes a pedestal and an outdoor hood separate from each other,
The pedestal includes a base having a surface facing the outer wall in a state close to the outer wall,
The outdoor hood includes a front plate portion that covers an outdoor opening of the ventilation pipe from an outside front,
The base portion is fixed to the outer wall by a stopper,
In the base portion, an outer fitting portion close to the outer periphery of the ventilation pipe, and an annular portion concentric with the outer periphery of the ventilation pipe are integrally formed,
An annular packing arrangement space for arranging packing is formed between the outer wall, the ventilation pipe, the outer fitting portion, and the annular portion,
The connection structure of a ventilation device, wherein the packing is formed of a dry seal member having a predetermined shape, and performs sealing between the annular portion and an outer peripheral surface of the ventilation pipe.

In claim 1 or 2,
The connection structure for a ventilation device, wherein the packing is compressed between the pedestal and the outer wall by the stopper so as to perform the seal, and to perform a seal between the outer wall and the pedestal.

In claim 3,
Between the pedestal and the outer wall, in addition to the seal by the packing, further sealing by a wet caulking material is performed,
A connection structure for a ventilation device, wherein the caulking material is arranged on the outer peripheral side of the packing.

In claim 4,
A connection structure for a ventilation device in which the stopper is disposed between the packing and the caulking material.

In a connection structure for a ventilation device, a ventilation pipe is provided to penetrate an outer wall and communicate between an indoor side and an outdoor side, and one end of the ventilation pipe is protruded to the outdoor side, and a ventilation device is provided at the projection.
The ventilation device includes a pedestal and an outdoor hood separate from each other,
The pedestal includes a base having a surface facing the outer wall in a state close to the outer wall,
The outdoor hood includes a front plate portion that covers an outdoor opening of the ventilation pipe from an outside front,
The pedestal is fixed to the outer wall by a stopper,
In the base portion, an annular portion that is concentric with the outer periphery of the protrusion of the ventilation pipe is provided on the outer periphery of the protrusion,
In the space between the annular portion and the protruding portion, a packing that seals between them is provided,
The packing is made of a dry seal member having a predetermined shape,
A connection structure for a ventilator, wherein a tip of the protruding portion protrudes from the annular portion and is exposed.

In claim 6,
An auxiliary packing made of a dry seal member having a predetermined shape different from the packing,
The pedestal has a packing mounting groove for mounting the auxiliary packing,
The auxiliary packing is compressed between the pedestal and the outer wall by the stopper, and performs a seal between the outer wall and the pedestal,
Between the pedestal and the outer wall, in addition to the seal by the auxiliary packing, further sealing by a wet caulking material is performed,
A connection structure for a ventilation device, wherein the caulking material is arranged on the outer peripheral side of the packing.

In a connection structure for a ventilation device, a ventilation pipe is provided to penetrate an outer wall and communicate between an indoor side and an outdoor side, and one end of the ventilation pipe is protruded to the outdoor side, and a ventilation device is provided at the projection.
The ventilation device includes a pedestal and an outdoor hood separate from each other,
The pedestal includes a base having a surface facing the outer wall in a state close to the outer wall,
The outdoor hood includes a front plate portion that covers an outdoor opening of the ventilation pipe from an outside front,
The pedestal is fixed to the outer wall by a stopper,
In the base portion, an annular portion close to the outer peripheral surface of the protrusion of the ventilation pipe is provided on the outer periphery of the protrusion,
The tip of the protruding portion protrudes from the annular portion and is exposed,
A ventilation device in which a seal is formed between the ventilation pipe and the base portion by a resin tape being wound and adhered in an annular shape so as to straddle between the annular portion and the protruding portion. Connection structure.

In claim 8,
Having an auxiliary packing made of a dry seal member having a predetermined shape,
The pedestal has a packing mounting groove for mounting the auxiliary packing,
The auxiliary packing is compressed between the pedestal and the outer wall by the stopper, and performs a seal between the outer wall and the pedestal,
Between the pedestal and the outer wall, in addition to the seal by the auxiliary packing, further sealing by a wet caulking material is performed,
A connection structure for a ventilation device, wherein the caulking material is arranged on the outer peripheral side of the packing.

In a connection structure for a ventilation device, a ventilation pipe is provided to penetrate an outer wall and communicate between an indoor side and an outdoor side, and one end of the ventilation pipe is protruded to the outdoor side, and a ventilation device is provided at the projection.
The ventilation device includes a pedestal and an outdoor hood separate from each other,
The pedestal includes a base having a surface facing the outer wall in a state close to the outer wall,
The outdoor hood includes a front plate portion that covers an outdoor opening of the ventilation pipe from an outside front,
The pedestal is fixed to the outer wall by a stopper,
The pedestal is close to the outer periphery of the protruding portion of the ventilation pipe, and has a circumferential portion having a back surface close to the outer wall,
A packing is interposed between the back surface of the circumferential portion and the outer wall,
The packing is formed of a dry seal member having a predetermined shape, and is compressed between a back surface of the circumferential portion and the outer wall by a fastening force of the stopper, so that a back surface of the circumferential portion and the outer wall are formed. Seal between,
The tip of the protrusion of the ventilation pipe projects toward the outdoor hood from the circumference,
A connection structure for a ventilation device, wherein the packing is inserted between an inner peripheral edge of the circumferential portion and the protruding portion and seals between them.

In claim 10,
The packing is a plate-shaped seal member made of a resin or rubber foam, and having an insertion hole having an inner diameter smaller than the outer diameter of the ventilation pipe in a no-load state, and an inner peripheral edge of the circumferential portion. A ventilator connection structure that is bent and deformed into an L-shaped cross-section so as to enter between the protrusions.

In claim 11,
The pedestal is provided with an annular ridge for positioning the outer periphery of the packing,
A connection structure for a ventilator, wherein a seal between the pedestal and an outer wall on an outer periphery of the ridge portion is further sealed with a wet caulking material, separately from the seal with the packing.