JPH0743157B2 - Ventilation fan - Google Patents
Ventilation fanInfo
- Publication number
- JPH0743157B2 JPH0743157B2 JP1293002A JP29300289A JPH0743157B2 JP H0743157 B2 JPH0743157 B2 JP H0743157B2 JP 1293002 A JP1293002 A JP 1293002A JP 29300289 A JP29300289 A JP 29300289A JP H0743157 B2 JPH0743157 B2 JP H0743157B2
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- wind tunnel
- outside
- lower shutter
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 [産業上の利用分野] この発明はダクトを通じて吸気した室内空気を排気する
換気扇に関するものである。TECHNICAL FIELD The present invention relates to a ventilation fan for exhausting indoor air taken in through a duct.
[従来の技術] 第5図は例えば、実開昭63-32244号公報に開示された従
来の換気扇を示す断面図である。即ち、下面の開放した
ボックス型に形成された本体枠30には電動機31が組付け
られ、その本体枠30内に延び出さした回転軸32に羽根33
が取付けられている。羽根33は、本体枠30内に設けら
れ、吸込口34を有するケーシング35に覆われている。ケ
ーシング35は本体枠30に開けられた矩形の吐出口36に連
通し、吐出口36の外側には、円形断面の排気用ダクト44
を接続するためのテーパ部37を有し、吐出口36側からテ
ーパ部37に向かって矩形から円筒に漸次形状を変化させ
た接続口38が取付けられている。接続口38の内部には第
6図に示すように、本体枠30と接続口38の間に介在する
取付板39に切り起こされた支持片40に差し込み固定され
た支持ピンに対して回動可能に取付けられたシャッタ41
が設けられている。シャッタ41にはその接続口38との当
接部に緩衝材42が装着されている。本体枠30は天井部材
43に取付けられ、接続口38にはテーパ部37に接続端が当
接するように排気用ダクト44が嵌合接続される。本体枠
30の開放部分にはグリル45が装着され、グリル45から吸
込まれた室内空気は、吸込口34から吐出口36を通じ接続
口38を経て排気用ダクト44から室外へ排気される。[Prior Art] FIG. 5 is a sectional view showing a conventional ventilation fan disclosed in, for example, Japanese Utility Model Laid-Open No. 63-32244. That is, an electric motor 31 is attached to a main body frame 30 formed in a box shape with an open bottom surface, and a blade 33 is attached to a rotary shaft 32 extending into the main body frame 30.
Is installed. The blade 33 is provided in the main body frame 30 and is covered with a casing 35 having a suction port 34. The casing 35 communicates with a rectangular discharge port 36 opened in the main body frame 30, and an exhaust duct 44 having a circular cross section is provided outside the discharge port 36.
A connecting port 38 having a taper portion 37 for connecting with each other and having a shape gradually changed from a rectangular shape to a cylinder is attached from the discharge port 36 side toward the taper portion 37. As shown in FIG. 6, the inside of the connection port 38 is rotated with respect to a support pin fixed by being inserted into a support piece 40 cut and raised in a mounting plate 39 interposed between the body frame 30 and the connection port 38. Shutter 41 mounted possible
Is provided. A cushioning material 42 is attached to the shutter 41 at the contact portion with the connection port 38. The body frame 30 is a ceiling member
An exhaust duct 44 is fitted and connected to the connection port 38 so that the connection end contacts the tapered portion 37. Body frame
A grill 45 is attached to an open portion of the room 30, and the room air sucked from the grill 45 is exhausted from the intake port 34, the discharge port 36, the connection port 38, and the exhaust duct 44 to the outside of the room.
この換気扇では、接続口38にテーパ部37が形成され、排
気用ダクト44と接続口38に若干の位置ずれができても接
続することができるようになっている。また接続口38の
断面形状を矩形から円筒に徐々に変化させて圧損を少な
くしている。シャッタ41は開放時に接続口38や排気用ダ
クト44の内面に当接しない形状に形成され、運転時以外
は当該部の風路を閉止している。In this ventilation fan, a taper portion 37 is formed at the connection port 38 so that the exhaust duct 44 and the connection port 38 can be connected to each other even if a slight misalignment occurs. Further, the cross-sectional shape of the connection port 38 is gradually changed from a rectangle to a cylinder to reduce the pressure loss. The shutter 41 is formed in a shape that does not come into contact with the connection port 38 or the inner surface of the exhaust duct 44 when opened, and closes the air passage of the relevant portion except during operation.
[発明が解決しようとする課題] 従来の換気扇においては、接続口38がその断面形状が矩
形から円筒に徐々に変化する構成であるため、全開した
ときに接続口38及び排気用ダクト44の内面に接触しない
シャッタ41の形状は円板形状になっている。これに対し
てシャッタ41の閉止箇所の風路の断面形状は概ね角形と
なっているため、シャッタ閉止時にも風路のコーナ部は
閉塞されず、冬季などにおいては外気が逆侵入し肌寒さ
を感じさせる原因になっている。また、シャッタ41を支
持させる支持ピンを風路の内側から固定しなければなら
ないことから、その組立作業は煩雑で、支持片40も切起
こしのため変形し易く、シャッタ41の動作不良を招き易
いなどの解決すべき課題を含んでいる。[Problems to be Solved by the Invention] In a conventional ventilation fan, since the connection port 38 has a configuration in which the cross-sectional shape thereof gradually changes from a rectangular shape to a cylindrical shape, the inner surfaces of the connection port 38 and the exhaust duct 44 when fully opened. The shape of the shutter 41 that does not come into contact with is a disk shape. On the other hand, since the cross-sectional shape of the air passage at the closed position of the shutter 41 is substantially rectangular, the corner portion of the air passage is not closed even when the shutter is closed, and outside air invades reversely in winter etc. It is a cause to feel. Further, since the support pin for supporting the shutter 41 has to be fixed from the inside of the air passage, the assembling work thereof is complicated, and the support piece 40 is also easily deformed due to cutting and raising, and malfunction of the shutter 41 is likely to occur. It includes issues to be solved.
この発明はかかる従来の課題を解決するためになされた
もので、シャッタの閉止時の閉塞度が高く、シャッタの
組立作業を少ない部品で容易に行なうことができ、シャ
ッタの動作不良も起きにくい換気扇を得ることを目的と
するものである。The present invention has been made to solve such a conventional problem, and has a high degree of blockage when the shutter is closed, the shutter assembly work can be easily performed with a small number of components, and a malfunction of the shutter is unlikely to occur. The purpose is to obtain.
[課題を解決するための手段] この発明に係る換気扇は、電動機や羽根を備えた本体枠
に開けられた角形の吐出口に連通する角筒形の排気用の
風胴を外側に設け、この風胴内には、その角筒部分の外
側から固定される支持ピンによりそれぞれ回動可能に支
持され、全閉時に風胴の投影断面形状とほぼ同一となる
上側シャッタと下側シャッタとを組込み、上側シャッタ
と下側シャッタをそれぞれ支持する支持ピンにこれを風
胴の角筒形部分の外側から差し込み固定する固定ピンを
一体に連設し、この固定ピンへの当接により上側シャッ
タと下側シャッタとの回動角度が規定されるようにした
ものである。[Means for Solving the Problem] A ventilation fan according to the present invention is provided with a rectangular tube-shaped exhaust wind tunnel, which communicates with a rectangular discharge port opened in a main body frame provided with an electric motor and blades, on the outside. Inside the wind tunnel, an upper shutter and a lower shutter, which are rotatably supported by support pins fixed from the outside of the square tube, and have a projection cross-sectional shape that is almost the same as the projected cross section of the wind tunnel when fully closed are incorporated. , A fixed pin that connects the upper and lower shutters respectively to the supporting pins that are inserted and fixed from the outside of the rectangular tube portion of the wind tunnel, and is abutted to these fixed pins to connect the upper and lower shutters. The rotation angle with the side shutter is regulated.
[作用] この発明の換気扇においては、全閉時に該風胴の投影断
面形状とほぼ同一となる上側シャッタと下側シャッタと
により隙間を作ることなく当該部を閉塞することができ
る。上側シャッタと下側シャッタは風胴の角筒部分の外
側から挿通される支持ピンにより支持され、支持ピンは
これに一体に連接された固定ピンにより固定される。そ
して、角筒部分に突入する固定ピンにより、上側シャッ
タと下側シャッタとの回動角度が規定される。[Operation] In the ventilating fan of the present invention, when fully closed, the upper shutter and the lower shutter, which have substantially the same projected cross-sectional shape of the wind tunnel, can close the portion without forming a gap. The upper shutter and the lower shutter are supported by support pins that are inserted from the outside of the rectangular tube portion of the wind tunnel, and the support pins are fixed by fixing pins that are integrally connected to the support pins. Then, the rotation angle between the upper shutter and the lower shutter is defined by the fixing pin that projects into the rectangular tube portion.
[実施例] 第1図から第4図はこの発明の換気扇の一実施例を示し
たものである。即ち、下面の開放したボックス型に形成
された本体枠1には電動機2が組付けられ、その本体枠
1内に延び出した回転軸3には羽根4が取付けられてい
る。羽根4は、本体枠1内に設けられたケーシング5に
覆われ、ケーシング5の吸込口6は本体枠1の開放部に
臨んでいる。本体枠1の一側にはケーシング5に連通す
る角形の吐出口7が開設され、吐出口7の外側には吐出
口7に連通する排気用の風胴8が横方向に突き出すよう
に固定されている。風胴8は吐出口7に対応する角筒形
に形成されているが、その排気側端には、半径方向に内
外径が膨出した球面型接続部9を備えている。この風胴
8には、その球面型接続部9に内側において回動自在に
はまりあう摺動接続部10を備えた円筒状の接続口11が球
面継手構成をなして接続されている。接続口11は風胴8
に対して旋回可能で、外径が球面型接続部9の外径にほ
ぼ等しい円形断面の排気用ダクト12が外嵌合により接続
される。排気用ダクト12の接続において、排気用ダクト
12の接続側端は球面型接続部9の先側部分に当接し、接
合部を形成する。接合部には当該部の気密保持と抜けを
防止するためにテープ13が巻き付けられる。このテープ
13は、球面型接続部9と排気用ダクト12にわたり両者を
跨ぐように接合部に平行に貼り付けられる。接続口11の
先端には全周にわたる折り返し部14が形成され、折り返
し部14の一部に半径方向に張り出し、排気用ダクト12の
差し込みで半径方向に弾性縮小する数個の固定爪15が円
周上に等間隔に一体形成されている。[Embodiment] FIGS. 1 to 4 show an embodiment of the ventilation fan of the present invention. That is, an electric motor 2 is attached to a main body frame 1 formed in a box shape with an open lower surface, and a blade 4 is attached to a rotary shaft 3 extending into the main body frame 1. The blade 4 is covered with a casing 5 provided in the main body frame 1, and a suction port 6 of the casing 5 faces an open portion of the main body frame 1. A rectangular discharge port 7 communicating with the casing 5 is provided on one side of the main body frame 1, and an exhaust wind tunnel 8 communicating with the discharge port 7 is fixed to the outside of the discharge port 7 so as to project laterally. ing. The wind tunnel 8 is formed in a rectangular tube shape corresponding to the discharge port 7, and the exhaust side end thereof is provided with a spherical type connection portion 9 whose inner and outer diameters are expanded in the radial direction. A cylindrical connection port 11 having a sliding connection portion 10 rotatably fitted inside the spherical connection portion 9 is connected to the wind tunnel 8 in a spherical joint configuration. Connection port 11 is wind tunnel 8
An exhaust duct 12 having a circular cross-section that is swivelable with respect to and has an outer diameter approximately equal to the outer diameter of the spherical connection portion 9 is connected by external fitting. When connecting the exhaust duct 12, the exhaust duct
The connection side end of 12 abuts on the front side portion of the spherical type connection portion 9 to form a joint portion. A tape 13 is wound around the joint portion in order to maintain the airtightness of the portion and prevent the portion from coming off. This tape
13 is attached in parallel to the joint portion so as to straddle the spherical type connection portion 9 and the exhaust duct 12 so as to straddle both. A fold-back portion 14 is formed at the tip of the connection port 11 over the entire circumference, and several fixing claws 15 that extend radially in a part of the fold-back portion 14 and elastically contract in the radial direction when the exhaust duct 12 is inserted are formed. They are integrally formed on the circumference at equal intervals.
上記風胴8内には、その角筒部分に当該部の風路を開閉
し、全閉時に該風胴8の投影断面形状(第3図のごとき
矩形ないしは角形)とほぼ同一となる上側シャッタ16と
下側シャッタ17とが組込まれている。上側シャッタ16と
下側シャッタ17とはいずれも風胴8の両側に取付けられ
た支持ピン18により回動可能に枢支され、それぞれ個別
に干渉しあうことなく回動することができる。下側シャ
ッタ17には、特にその枢支部より図示上側端縁にウエイ
ト19となる折り返しが形成され、上側シャッタ16より開
放動し易い構成となっている。上側シャッタ16と下側シ
ャッタ17とを枢支している各支持ピン18は角度θの鋭角
の開き角をもって連接する二本の固定ピン20を有する。
固定ピン20は第4図に示すように弾性的に拡縮し、係止
爪21を持つ構成で、風胴8に形成した取付穴に差し込む
ことにより、支持ピン18を固定する。差し込んだ固定ピ
ン20は風胴8内に突き出し、第3図のように上側シャッ
タ16や下側シャッタ17の表裏に個別に当たるようになっ
ている。固定ピン20の支持ピン18を中心とする開き角度
θに応じて、上側シャッタ16と下側シャッタ17との各回
動角度が決定される(第2図参照)。即ち、上側シャッ
タ16と下側シャッタ17は、それぞれ概ね垂直状態から概
ね水平状態にまでの回動が可能にされ、自由状態では垂
直状態に並んで風胴8の投影断面形状とほぼ同一の形状
となっている。In the wind tunnel 8, an upper shutter that opens and closes an air passage of the square tube portion and has a projection cross-sectional shape (rectangular or rectangular as shown in FIG. 3) of the wind tunnel 8 when fully closed. 16 and the lower shutter 17 are incorporated. Both the upper shutter 16 and the lower shutter 17 are rotatably supported by support pins 18 attached to both sides of the wind tunnel 8, and can rotate individually without interfering with each other. The lower shutter 17 is provided with a fold that serves as a weight 19 at the upper edge of the lower shutter 17 in the figure from its pivotal support, so that the lower shutter 17 can be opened more easily than the upper shutter 16. Each support pin 18 that pivotally supports the upper shutter 16 and the lower shutter 17 has two fixing pins 20 that are connected to each other with an acute opening angle of the angle θ.
The fixing pin 20 is elastically expanded and contracted as shown in FIG. 4, and has a locking claw 21, and the support pin 18 is fixed by inserting it into the mounting hole formed in the wind tunnel 8. The inserted fixing pin 20 projects into the wind tunnel 8 and individually hits the front and back of the upper shutter 16 and the lower shutter 17 as shown in FIG. The rotation angles of the upper shutter 16 and the lower shutter 17 are determined according to the opening angle θ of the fixed pin 20 about the support pin 18 (see FIG. 2). That is, the upper shutter 16 and the lower shutter 17 are each rotatable from a substantially vertical state to a substantially horizontal state, and in the free state, they are aligned in the vertical state and have substantially the same shape as the projected cross-sectional shape of the wind tunnel 8. Has become.
本体枠1は天井部材22に取付けられ、本体枠1の開放部
分にはグリル23が装着される。グリル23から吸込まれた
室内空気は、吸込口6から吐出口7を通じ接続口11を経
て排気用ダクト12から室外へ排気される。この換気扇で
は、排気用ダクト12と接続口11との位置ずれは、風胴8
の球面型接続部9に内側において回動自在にはまりあう
接続口11の摺動接続部10による旋転により吸収でき、排
気用ダクト12の接続において球面型接続部9と排気用ダ
クト12の外径がほぼ同じであるから、接合部において両
者を跨いで平行にテープ13を貼り付けることは極容易
で、風漏れのない適切な巻着状態が得られ、ダクト接続
工事が簡単に済む。特に、風胴8の断面形状と全閉時の
上側シャッタ16と下側シャッタ17との形状が概ね一致す
るので、当該部に隙間を作ることなく上側シャッタ16と
下側シャッタ17とで閉塞でき、外風の逆侵入を回避する
ことができる。上側シャッタ16も下側シャッタ17も電動
機2や羽根4で構成される送風機からの送風により開放
動するが、ウエイト19を付けた下側シャッタ17のほうが
開き易く、比較的小風量で全開となる。これに対して上
側シャッタ16は風量に応じて開き、平衡状態で安定し、
比較的大風量で全開となる。The main body frame 1 is attached to a ceiling member 22, and a grill 23 is attached to an open portion of the main body frame 1. The indoor air sucked from the grill 23 is exhausted from the intake port 6 through the discharge port 7 through the connection port 11 to the outside through the exhaust duct 12. In this ventilation fan, the positional deviation between the exhaust duct 12 and the connection port 11 is caused by the wind tunnel 8
Can be absorbed by rotation of the sliding connection portion 10 of the connection port 11 that rotatably fits inside the spherical type connection portion 9 of the outer diameter of the spherical type connection portion 9 and the exhaust duct 12 when connecting the exhaust duct 12. Since it is almost the same, it is extremely easy to attach the tape 13 in parallel at the joining portion so as to straddle the two, and an appropriate wound state without air leakage can be obtained, and the duct connection work can be simplified. In particular, since the cross-sectional shape of the wind tunnel 8 and the shapes of the upper shutter 16 and the lower shutter 17 when fully closed are substantially the same, it is possible to close the upper shutter 16 and the lower shutter 17 without forming a gap in the relevant portion. , It is possible to avoid reverse intrusion of outside wind. Both the upper shutter 16 and the lower shutter 17 are opened by blowing air from the blower composed of the electric motor 2 and the blades 4, but the lower shutter 17 provided with the weight 19 is easier to open and is fully opened with a relatively small air volume. . On the other hand, the upper shutter 16 opens according to the air volume and stabilizes in an equilibrium state.
Fully open with relatively large air volume.
[発明の効果] 以上のようにこの発明の換気扇によれば、全閉時に風胴
の投影断面形状とほぼ同一となる上側シャッタと下側シ
ャッタとにより隙間を作ることなく当該部を閉塞するこ
とができ、冷風等の逆侵入を防止できる。そして、上側
シャッタと下側シャッタの組付けは、風胴の外からの支
持ピンの挿通操作で済み、支持ピンは、これに一体に連
設された角筒部分に突入し上側シャッタと下側シャッタ
との回動角度を規定する固定ピンにより固定されるの
で、部品点数が少なくシャッタの組立作業が容易になる
うえ、シャッタの動作不良も減少し安定なシャッタ機能
が得られる。[Effects of the Invention] As described above, according to the ventilation fan of the present invention, when fully closed, the upper shutter and the lower shutter, which have substantially the same projected cross-sectional shape of the wind tunnel, close the portion without forming a gap. It is possible to prevent the reverse entry of cold air. The upper shutter and the lower shutter can be assembled by inserting the support pin from the outside of the wind tunnel, and the support pin protrudes into the rectangular tube portion integrally provided with the support pin and the upper shutter and the lower shutter. Since it is fixed by the fixing pin that regulates the rotation angle with the shutter, the number of parts is small, the shutter assembling work is easy, and malfunction of the shutter is reduced, and a stable shutter function is obtained.
第1図はこの発明による換気扇の一実施例を取付け状態
で示す断面図、第2図は同じくその風胴部の拡大断面
図、第3図は風胴のシャッタ取付け部の縦断図、第4図
は支持ピンと固定ピンの取付け状態を示す拡大断面図、
第5図は従来例としての換気扇を取付け状態で示す断面
図、第6図はその接続口部分の拡大断面図である。 図において、1は本体枠、2は電動機、4は羽根、7は
吐出口、8は風胴、9は球面型接続部、10は摺動接続
部、11は接続口、12は排気用ダクト、16は上側シャッ
タ、17は下側シャッタ、18は支持ピン、20は固定ピンで
ある。なお、図中同一符号は、同一又は相当部分を示
す。FIG. 1 is a sectional view showing an embodiment of a ventilation fan according to the present invention in a mounted state, FIG. 2 is an enlarged sectional view of a wind tunnel portion of the same, and FIG. 3 is a vertical sectional view of a shutter mounting portion of the wind tunnel. The figure is an enlarged cross-sectional view showing the mounting state of the support pin and the fixing pin,
FIG. 5 is a sectional view showing a ventilation fan as a conventional example in a mounted state, and FIG. 6 is an enlarged sectional view of a connection port portion thereof. In the figure, 1 is a main body frame, 2 is an electric motor, 4 is a blade, 7 is a discharge port, 8 is a wind tunnel, 9 is a spherical connection part, 10 is a sliding connection part, 11 is a connection port, and 12 is an exhaust duct. , 16 is an upper shutter, 17 is a lower shutter, 18 is a support pin, and 20 is a fixed pin. The same reference numerals in the drawings indicate the same or corresponding parts.
Claims (1)
角形の吐出口に連通する角筒形の排気用の風胴を外側に
設け、この風胴内には、その角筒部分の外側から固定さ
れる支持ピンによりそれぞれ回動可能に支持され、全閉
時に該風胴の投影断面形状とほぼ同一となる上側シャッ
タと下側シャッタとを組込み、上記支持ピンは、該支持
ピンに一体に連設され、上記風胴の角筒部分の外側から
差し込み固定する固定ピンにより固定され、上記固定ピ
ンは、上記風胴内において上記上側シャッタと下側シャ
ッタとに当接することにより上側シャッタと下側シャッ
タとの回動角度を規定することを特徴とする換気扇。1. A rectangular tube-shaped exhaust wind tunnel communicating with a rectangular discharge port opened in a main body frame provided with an electric motor and blades is provided on the outside, and in this wind tunnel, the rectangular tube part An upper shutter and a lower shutter, which are rotatably supported by support pins fixed from the outside and have substantially the same projected cross-sectional shape of the wind tunnel when fully closed, are incorporated into the support pins. The shutters are integrally connected and fixed by a fixing pin that is inserted and fixed from the outside of the rectangular tube portion of the wind tunnel, and the fixing pin contacts the upper shutter and the lower shutter in the wind tunnel so that the upper shutter is closed. A ventilation fan characterized in that the rotation angle between the lower shutter and the lower shutter is regulated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1293002A JPH0743157B2 (en) | 1989-11-10 | 1989-11-10 | Ventilation fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1293002A JPH0743157B2 (en) | 1989-11-10 | 1989-11-10 | Ventilation fan |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03156237A JPH03156237A (en) | 1991-07-04 |
JPH0743157B2 true JPH0743157B2 (en) | 1995-05-15 |
Family
ID=17789205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1293002A Expired - Lifetime JPH0743157B2 (en) | 1989-11-10 | 1989-11-10 | Ventilation fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0743157B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4485777B2 (en) * | 2003-10-09 | 2010-06-23 | 三菱電機株式会社 | Shutter with vibration absorption function and ventilator with shutter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54115539A (en) * | 1978-03-01 | 1979-09-08 | Hitachi Ltd | Ventilator |
JPS6246148A (en) * | 1985-08-23 | 1987-02-28 | Hitachi Ltd | Ventilating fan |
-
1989
- 1989-11-10 JP JP1293002A patent/JPH0743157B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03156237A (en) | 1991-07-04 |
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