JPH07190445A - Induced draft ventilator - Google Patents
Induced draft ventilatorInfo
- Publication number
- JPH07190445A JPH07190445A JP33257993A JP33257993A JPH07190445A JP H07190445 A JPH07190445 A JP H07190445A JP 33257993 A JP33257993 A JP 33257993A JP 33257993 A JP33257993 A JP 33257993A JP H07190445 A JPH07190445 A JP H07190445A
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- venturi
- air
- ventilation
- air intake
- 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.)
- Granted
Links
Landscapes
- Jet Pumps And Other Pumps (AREA)
- Ventilation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、おもに事務所や居室等
の室内の空気を入れかえる誘引換気装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction ventilator for mainly changing the air in a room such as an office or a living room.
【０００２】[0002]
【従来の技術】近年、住宅の高気密化が進み、この結果
換気の必要性が高まっており、低騒音でより効率的な換
気を行うことにより居室空間の快適性の向上を図ること
が求められている。2. Description of the Related Art In recent years, housing has become highly airtight, and as a result, the need for ventilation is increasing. It is required to improve the comfort of the living space by performing more efficient ventilation with low noise. Has been.
【０００３】従来の換気装置では、一般的に電動機と羽
根を用いて室内の空気を屋外に排出するものであった
が、室内の快適性を向上させるため、電動機や羽根の低
騒音化が重要な課題となっていた。In a conventional ventilation device, air in a room is generally exhausted to the outside by using an electric motor and blades, but in order to improve indoor comfort, it is important to reduce noise of the electric motor and the blades. It was a problem.
【０００４】そこで、騒音の発生源である電動機や羽根
を用いない換気装置として、空気の誘引を用いて換気を
行う誘引換気装置が提案されている。Therefore, as a ventilator that does not use an electric motor or a blade that is a source of noise, there has been proposed an induction ventilator that performs ventilation by using air attraction.
【０００５】以下、この種の誘引換気装置について図５
および図６を参照しながら説明する。Hereinafter, this type of induction ventilation device will be described with reference to FIG.
The description will be made with reference to FIG.
【０００６】図に示すように、換気装置１０１は、天井
１０２に取り付けられている吸い込み口１０３と建物の
外壁１０４に取り付けられている排気口１０５とを天井
裏１０６で連結している換気ダクト１０７に設けられて
いる。また、換気装置１０１はベンチュリー部１０８
と、このベンチュリー部１０８の外周部を囲み前記ベン
チュリー部１０８にスリット１０９を介して連通する圧
力チャンバー１１０を形成する本体ケース１１１とから
なり、この本体ケース１１１に設けられた空気取り入れ
部１１２には、建物外１１３に設置されたブロワーファ
ン１１４等と連通している送風ダクト１１５が接続され
ていた。As shown in the figure, a ventilation device 101 has a ventilation duct 107 in which a suction port 103 mounted on a ceiling 102 and an exhaust port 105 mounted on an outer wall 104 of a building are connected to each other by a ceiling 106. It is provided in. In addition, the ventilation device 101 includes a venturi unit 108.
And a main body case 111 that surrounds the outer periphery of the venturi portion 108 and forms a pressure chamber 110 that communicates with the venturi portion 108 via a slit 109. The air intake portion 112 provided in the main body case 111 includes A blower duct 115 communicating with a blower fan 114 or the like installed outside the building 113 was connected.
【０００７】このような構成からなる換気装置１０１に
よって室内１１６を換気する場合、ブロワーファン１１
４を作動させ、送風ダクト１１５内に空気を圧送する。
そして、圧力チャンバー１１０からスリット１０９を通
してベンチュリー部１０８内部に圧送空気を吹き出すこ
とにより、室内１１６の汚れた空気１１７を吸い込み口
１０３からベンチュリー部１０８に誘引し、スリット１
０９から吹き出された圧送空気とともに排気口１０５か
ら建物外１１３へ排出していた。When the room 116 is ventilated by the ventilation device 101 having such a structure, the blower fan 11
4 is operated, and air is pressure-fed into the ventilation duct 115.
Then, by blowing the compressed air from the pressure chamber 110 through the slit 109 into the venturi portion 108, the dirty air 117 in the room 116 is drawn from the suction port 103 to the venturi portion 108, and the slit 1
The air was discharged from the exhaust port 105 to the outside of the building 113 together with the compressed air blown from 09.
【０００８】[0008]
【発明が解決しようとする課題】このような従来の誘引
換気装置１０１では、ブロワーファン１１４から送られ
てきた圧送空気が、空気取り入れ部１１２を通過して圧
力チャンバー１１０に入る際、ベンチュリー部１０８の
外壁面１１８に激しくぶつかりながら乱流となって、ス
リット１０９方向に流れて行くことから、圧力チャンバ
ー１１０内部の圧力バランスがくずれ、スリット１０９
からベンチュリー部１０８内部に吹き出す圧送空気が不
均一でまばらになる。したがって、吸い込み口１０３か
ら誘引する室内空気量が不安定になって誘引換気効率が
悪くなり、また、騒音も高くなるという課題があった。In such a conventional induction ventilation device 101, when the compressed air sent from the blower fan 114 passes through the air intake portion 112 and enters the pressure chamber 110, the venturi portion 108. Since it becomes a turbulent flow while striking the outer wall surface 118 of the chamber and flows toward the slit 109, the pressure balance inside the pressure chamber 110 is disturbed and the slit 109
The compressed air blown from the venturi portion 108 into the venturi portion 108 is nonuniform and sparse. Therefore, there is a problem in that the amount of room air attracted from the suction port 103 becomes unstable, the efficiency of induced ventilation decreases, and the noise also increases.
【０００９】本発明は上記課題を解決するもので、圧力
チャンバーに流入する圧送空気が、ベンチュリー部の外
壁面に激しくぶつかりながら乱流となって、圧力チャン
バー内部の圧力バランスがくずれ、誘引換気効率が低下
するのを防止するとともに、騒音も低減させることので
きる誘引換気装置を提供することを目的としている。The present invention is to solve the above-mentioned problems. The pressure-fed air flowing into the pressure chamber becomes a turbulent flow while striking the outer wall surface of the venturi portion violently, and the pressure balance inside the pressure chamber is disturbed, and the induced ventilation efficiency is increased. It is an object of the present invention to provide an induction ventilator capable of preventing a decrease in noise and reducing noise.
【００１０】[0010]
【課題を解決するための手段】本発明の上記目的を達成
するための第１の手段は、径の異なる円筒形状をなす誘
引口と排気口とを滑らかに結んだ円錐状のベンチュリー
部と、このベンチュリー部の外周部を囲み、前記ベンチ
ュリー部の内周部に開口するスリットを介して前記ベン
チュリー部内部に連通する圧力チャンバーと、この圧力
チャンバー内部に連通する通風路を有した空気取り入れ
部と、前記空気取り入れ部の通風路を通して前記圧力チ
ャンバーに空気を圧送する送風手段とを備え、前記空気
取り入れ部の通風路の方向を前記ベンチュリー部の中心
軸に向かう方向に対し傾斜させた誘引換気装置の構成と
したものである。A first means for achieving the above object of the present invention is to provide a conical venturi portion smoothly connecting an inlet port and an exhaust port, each of which has a cylindrical shape with a different diameter. A pressure chamber that surrounds the outer periphery of the venturi portion and communicates with the inside of the venturi portion through a slit that opens to the inner periphery of the venturi portion, and an air intake portion that has a ventilation path that communicates with the inside of the pressure chamber. And an air blower for sending air to the pressure chamber through the ventilation passage of the air intake portion, wherein the direction of the ventilation passage of the air intake portion is inclined with respect to the direction toward the central axis of the venturi portion. The configuration is as follows.
【００１１】また、上記目的を達成するための第２の手
段は、上記第１手段の空気取り入れ部の通風路をベンチ
ュリー部側に広がる円錐状に形成した誘引換気装置の構
成にしたものである。A second means for achieving the above object is the construction of an induction ventilator in which the ventilation passage of the air intake portion of the first means is formed in a conical shape that expands toward the venturi portion side. .
【００１２】[0012]
【作用】本発明は上記した第１の手段の構成により、送
風手段から圧力チャンバー内部に送られる圧送空気は、
空気取り入れ部の通風路を通過する際にベンチュリー部
の円周方向に曲げられたのち、ベンチュリー部の外壁面
に沿って滑らかにベンチュリー部の全周に回るので、圧
力チャンバー内部の圧力が均等な圧力分布となり、圧送
空気がスリットからスムーズに、しかも、均等にベンチ
ュリー部内部に吹き出ることとなる。According to the present invention, by the structure of the above-mentioned first means, the compressed air sent from the blowing means into the pressure chamber is
After being bent in the circumferential direction of the Venturi part when passing through the ventilation passage of the air intake part, it smoothly goes around the entire circumference of the venturi part along the outer wall surface of the venturi part, so the pressure inside the pressure chamber is uniform. The pressure is distributed, and the compressed air is smoothly and evenly blown into the venturi portion from the slit.
【００１３】また、第２の手段の構成により、圧送空気
は、空気取り入れ部の通風路を通過する際に、通風路内
部で広がりながら、その流速を下げたのち、ベンチュリ
ー部の全周に回るので、圧力チャンバー内部がより均等
な圧力分布となり、圧送空気がスリットからよりスムー
ズに、しかも、より均等にベンチュリー部内部に吹き出
ることとなる。Further, according to the constitution of the second means, when the compressed air passes through the ventilation passage of the air intake portion, it spreads inside the ventilation passage, reduces its flow velocity, and then goes around the entire circumference of the venturi portion. Therefore, the pressure distribution inside the pressure chamber becomes more uniform, and the compressed air is blown out from the slit more smoothly and evenly into the venturi portion.
【００１４】[0014]
【実施例】以下、本発明の第１の実施例について図１〜
図３を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG.
【００１５】図に示すように、誘引換気装置の本体１
は、径の異なる円筒形状をなす誘引口２および排気口３
とを滑らかに結んだ円錐状のベンチュリー部４と、この
ベンチュリー部４の外周部を囲み、ベンチュリー部４の
内周部に開口するスリット５を介してベンチュリー部４
内部に連通する圧力チャンバー６を形成するとともに、
圧力チャンバー６内部に連通し、かつその方向がベンチ
ュリー部４の中心軸に向かう方向に対し傾斜した通風路
８Ａを有した空気取り入れ部８を設けたケース７からな
り、天井９に開口した吸い込み口１０から室内空気１１
を誘引し、排気口１２より建物外１３に排気するように
設けている。そして、前記空気取り入れ部８の通風路８
Ａを通して圧力チャンバー６に空気を圧送する送風手段
であるブロワーファン１４は天井裏１５等に設置され、
空気取り入れ部８と送風ダクト１６により接続されてい
る。As shown in the figure, the main body 1 of the induction ventilation device
Is a guide port 2 and an exhaust port 3 which have cylindrical shapes with different diameters.
And a conical venturi portion 4 smoothly connected to each other, and a venturi portion 4 via a slit 5 that surrounds the outer peripheral portion of the venturi portion 4 and is open to the inner peripheral portion of the venturi portion 4.
While forming the pressure chamber 6 communicating with the inside,
A suction port opened to the ceiling 9 and comprising a case 7 provided with an air intake portion 8 communicating with the inside of the pressure chamber 6 and having a ventilation passage 8A inclined in a direction toward the central axis of the venturi portion 4. 10 to indoor air 11
Is installed so as to be exhausted to the outside 13 of the building through the exhaust port 12. Then, the ventilation path 8 of the air intake section 8
The blower fan 14, which is a blowing means for sending air under pressure to the pressure chamber 6 through A, is installed on the ceiling 15 or the like,
It is connected to the air intake section 8 by a blower duct 16.
【００１６】上記構成において、ブロワーファン１４か
ら圧送された圧送空気は送風ダクト１６を通って誘引換
気装置の本体１の圧力チャンバー６に送られる。この圧
送空気は、空気取り入れ部８の通風路８Ａを通過する際
にベンチュリー部４の円周方向に曲げられたのち、ベン
チュリー部４の外壁に激しくぶつかって乱れることな
く、ベンチュリー部４の外壁面に沿って滑らかにベンチ
ュリー部４の全周に回るので、圧力チャンバー６内部が
均等な圧力分布となり、スリット５からスムーズに、し
かも、均等にベンチュリー部４内部に吹き出る。このと
き、吹き出した圧送空気は、ベンチュリー部４の内壁に
沿って流れ負圧域を発生させ、汚れた室内空気１１を吸
い込み口１０より誘引して、圧送空気とともに排気口１
２から建物外１３に排気することができる。In the above structure, the pressure-fed air fed from the blower fan 14 is fed to the pressure chamber 6 of the main body 1 of the induction ventilation device through the air duct 16. The compressed air is bent in the circumferential direction of the venturi portion 4 when passing through the air passage 8A of the air intake portion 8 and then is not easily disturbed by the outer wall of the venturi portion 4 without being disturbed. Since it smoothly goes around the entire circumference of the venturi portion 4, the pressure inside the pressure chamber 6 has a uniform pressure distribution, and the air is blown into the venturi portion 4 smoothly and evenly from the slit 5. At this time, the blown compressed air flows along the inner wall of the Venturi portion 4 to generate a negative pressure region, attracts the dirty indoor air 11 from the suction port 10, and together with the compressed air, the exhaust port 1
It is possible to exhaust from 2 to 13 outside the building.
【００１７】なお、本実施例では、圧力チャンバー６に
空気を圧送する送風手段をブロワーファン１４とした
が、コンプレッサー等でもよい。また、ブロワーファン
１４の設置位置も天井裏１５としたが、室外や機械室等
の遠隔地に設置してもよい。In this embodiment, the blower fan 14 is used as the blowing means for sending air to the pressure chamber 6, but a compressor or the like may be used. Further, although the installation position of the blower fan 14 is also the ceiling 15 above, it may be installed outdoors or in a remote place such as a machine room.
【００１８】つぎに、本発明の第２実施例について図４
を参照しながら説明する。なお、上記第１実施例と同一
部分には同一符号を付し、その説明は省略する。Next, a second embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００１９】図に示すように、本第２実施例は上記第１
実施例に対し、空気取り入れ部８の通風路８Ｂをベンチ
ュリー部４側に広がる円錐状に形成した点に特徴があ
る。As shown in the figure, the second embodiment is the same as the first embodiment.
This embodiment is characterized in that the ventilation passage 8B of the air intake portion 8 is formed in a conical shape that spreads toward the venturi portion 4 side.
【００２０】上記構成において、空気取り入れ部８の通
風路８Ｂに入った圧送空気は、通風路８Ｂ内部で広がり
ながら、その流速を下げたのち、ベンチュリー部４の全
周に回るので、圧力チャンバー６内部がより均等な圧力
分布となり、スリット５からよりスムーズに、しかも、
より均等にベンチュリー部４内部に吹き出ることとな
る。In the above-described structure, the compressed air that has entered the ventilation passage 8B of the air intake portion 8 spreads inside the ventilation passage 8B, reduces its flow velocity, and then flows around the entire circumference of the venturi portion 4. The inside has a more even pressure distribution, and the slit 5 is smoother and moreover,
It will blow out more evenly into the Venturi portion 4.
【００２１】[0021]
【発明の効果】以上の実施例から明らかなように、本発
明によれば空気取り入れ部の通風路の方向をベンチュリ
ー部の中心軸に向かう方向に対し傾斜させることによっ
て、この通風路を通って圧力チャンバーに流入する圧送
空気が、ベンチュリー部の外壁面に激しくぶつかること
なく、ベンチュリー部の外壁面に沿って滑らかにベンチ
ュリー部の全周に回るので、圧力チャンバー内部の圧力
バランスがくずれ、誘引換気効率が低下するのを防止す
ることができるとともに、騒音も低減させることのでき
る誘引換気装置が提供できる。As is apparent from the above embodiments, according to the present invention, the direction of the ventilation passage of the air intake portion is inclined with respect to the direction toward the central axis of the venturi portion, so that the ventilation passage can pass through the ventilation passage. The compressed air that flows into the pressure chamber smoothly goes around the entire circumference of the venturi portion along the outer wall surface of the venturi portion without hitting the outer wall surface of the venturi portion violently. It is possible to provide an induction ventilation device that can prevent a decrease in efficiency and also reduce noise.
【００２２】また、空気取り入れ部の通風路をベンチュ
リー部側に広がる円錐状に形成することによって、この
通風路を通って圧力チャンバーに流入する圧送空気が、
通風路内部で広がりながら、その流速を下げたのち、ベ
ンチュリー部の全周に回るので、圧力チャンバー内部が
より均等な圧力分布となり、圧送空気をスリットからよ
りスムーズに、しかも、より均等にベンチュリー部内部
に吹き出させることができる。Further, by forming the ventilation passage of the air intake portion into a conical shape that spreads toward the venturi portion side, the compressed air flowing into the pressure chamber through this ventilation passage is
As it spreads inside the ventilation passage, the flow velocity is reduced and then it goes around the entire circumference of the venturi part, so the pressure distribution inside the pressure chamber becomes more uniform, so that the compressed air can flow from the slits more smoothly and evenly. Can be blown inside.
【図１】本発明の第１実施例の誘引換気装置の本体の構
成を示す断面図FIG. 1 is a cross-sectional view showing a configuration of a main body of an induction ventilation device according to a first embodiment of the present invention.
【図２】同第１実施例の誘引換気装置の本体の正面図FIG. 2 is a front view of the main body of the induction ventilation device of the first embodiment.
【図３】同第１実施例の誘引換気装置の構成を示す概略
図FIG. 3 is a schematic diagram showing the configuration of the induction ventilation device of the first embodiment.
【図４】同第２実施例の誘引換気装置の正面図FIG. 4 is a front view of the induction ventilation device of the second embodiment.
【図５】従来の誘引換気装置の構成を示す概略図FIG. 5 is a schematic diagram showing a configuration of a conventional induction ventilation device.
【図６】同誘引換気装置の本体の構成を示す断面図FIG. 6 is a cross-sectional view showing the configuration of the main body of the induction ventilation device.
２ 誘引口 ３ 排気口 ４ ベンチュリー部 ５ スリット ６ 圧力チャンバー ８ 空気取り入れ部 ８Ａ 通風路 ８Ｂ 通風路 １４ ブロワーファン（送風手段） 2 Induction port 3 Exhaust port 4 Venturi part 5 Slit 6 Pressure chamber 8 Air intake part 8A Ventilation path 8B Ventilation path 14 Blower fan (air blowing means)
Claims (2)
口とを滑らかに結んだ円錐状のベンチュリー部と、この
ベンチュリー部の外周部を囲み、前記ベンチュリー部の
内周部に開口するスリットを介して前記ベンチュリー部
内部に連通する圧力チャンバーと、この圧力チャンバー
内部に連通する通風路を有した空気取り入れ部と、前記
空気取り入れ部の通風路を通して前記圧力チャンバーに
空気を圧送する送風手段とを備え、前記空気取り入れ部
の通風路の方向を前記ベンチュリー部の中心軸に向かう
方向に対し傾斜させた誘引換気装置。1. A conical venturi part smoothly connecting an inlet port and an exhaust port, which are cylindrical with different diameters, and a slit that surrounds the outer peripheral part of the venturi part and opens to the inner peripheral part of the venturi part. A pressure chamber communicating with the inside of the venturi portion via an air intake portion having an air passage communicating with the inside of the pressure chamber, and an air blower for sending air to the pressure chamber through the air passage of the air intake portion. And a ventilating passage of the air intake portion, wherein the direction of the ventilation passage is inclined with respect to the direction toward the central axis of the venturi portion.
部側に広がる円錐状に形成した請求項１記載の誘引換気
装置。2. The induction ventilator according to claim 1, wherein the ventilation passage of the air intake portion is formed in a conical shape that widens toward the venturi portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5332579A JP2776735B2 (en) | 1993-12-27 | 1993-12-27 | Induced ventilation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5332579A JP2776735B2 (en) | 1993-12-27 | 1993-12-27 | Induced ventilation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07190445A true JPH07190445A (en) | 1995-07-28 |
| JP2776735B2 JP2776735B2 (en) | 1998-07-16 |
Family
ID=18256509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5332579A Expired - Fee Related JP2776735B2 (en) | 1993-12-27 | 1993-12-27 | Induced ventilation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2776735B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002001053A (en) * | 2000-06-14 | 2002-01-08 | Shiatoru Catalyzer Laboratory Kk | Exhauster and exhaust system for storage tank having exhauster |
| WO2016088154A1 (en) * | 2014-12-04 | 2016-06-09 | 株式会社キョクトー | Air intake and discharge tool |
| CN106901651A (en) * | 2015-12-23 | 2017-06-30 | Seb公司 | For the geometry of the pneumatic circuit of hand-held cleaners |
| GB2618359A (en) * | 2022-05-05 | 2023-11-08 | William Wyllie Ferguson Colin | Apparatus for ventilating a structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0446651U (en) * | 1990-08-27 | 1992-04-21 | ||
| JPH05180479A (en) * | 1991-12-27 | 1993-07-23 | Takenaka Komuten Co Ltd | Feeding method for ductless air |
-
1993
- 1993-12-27 JP JP5332579A patent/JP2776735B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0446651U (en) * | 1990-08-27 | 1992-04-21 | ||
| JPH05180479A (en) * | 1991-12-27 | 1993-07-23 | Takenaka Komuten Co Ltd | Feeding method for ductless air |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002001053A (en) * | 2000-06-14 | 2002-01-08 | Shiatoru Catalyzer Laboratory Kk | Exhauster and exhaust system for storage tank having exhauster |
| WO2016088154A1 (en) * | 2014-12-04 | 2016-06-09 | 株式会社キョクトー | Air intake and discharge tool |
| CN106901651A (en) * | 2015-12-23 | 2017-06-30 | Seb公司 | For the geometry of the pneumatic circuit of hand-held cleaners |
| GB2618359A (en) * | 2022-05-05 | 2023-11-08 | William Wyllie Ferguson Colin | Apparatus for ventilating a structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2776735B2 (en) | 1998-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |