JPS631633U - - Google Patents

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Publication number
JPS631633U
JPS631633U JP9557486U JP9557486U JPS631633U JP S631633 U JPS631633 U JP S631633U JP 9557486 U JP9557486 U JP 9557486U JP 9557486 U JP9557486 U JP 9557486U JP S631633 U JPS631633 U JP S631633U
Authority
JP
Japan
Prior art keywords
air supply
opening
air
exhaust
control device
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
Application number
JP9557486U
Other languages
Japanese (ja)
Other versions
JPH039793Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1986095574U priority Critical patent/JPH039793Y2/ja
Publication of JPS631633U publication Critical patent/JPS631633U/ja
Application granted granted Critical
Publication of JPH039793Y2 publication Critical patent/JPH039793Y2/ja
Expired legal-status Critical Current

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  • Devices For Use In Laboratory Experiments (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ないし第１２図は本考案のドラフトチヤ
ンバの一実施例を示し、第１図はドラフトチヤン
バ本体の正面図、第２図は同側面図、第３図は排
気制御装置と給気フアン停止装置とを示す説明図
、第４図は給気制御装置を示す説明図、第５図な
いし第７図は排気制御装置の動作装置を示し、第
５図は縦断面図、第６図は第５図―線に沿う
断面図、第７図は第５図―線に沿う断面図、
第８図ないし第１０図は給気制御装置の動作装置
を示し、第８図は縦断面図、第９図は分解斜視図
、第１０図はカムの動作を示す説明図、第１１図
および第１２図は扉の開度と給気制御装置の動作
の関連を示す拡大断面図、第１３図は扉の開度と
排気風量および給気風量との関係を示す線図、第
１４図は扉の開度と開口部風速との関係を示す線
図である。 １……本体、３……開口部、４……扉、７……
排気通路、９……排気フアン、１１……給気通路
、１３……給気フアン、１６……動作装置、１８
……チエーン、３１……速度設定器、３４……動
作装置、３８……ダンパ、５７……マイクロスイ
ツチ。 1 to 12 show an embodiment of the draft chamber of the present invention, in which FIG. 1 is a front view of the draft chamber body, FIG. 2 is a side view of the same, and FIG. 3 is an exhaust control device and supply FIG. 4 is an explanatory diagram showing the air supply control device, FIGS. 5 to 7 show the operating device of the exhaust control device, FIG. 5 is a longitudinal sectional view, and FIG. The figure is a cross-sectional view along the line of Figure 5, and Figure 7 is a cross-sectional view along the line of Figure 5.
8 to 10 show the operating device of the air supply control device, FIG. 8 is a longitudinal sectional view, FIG. 9 is an exploded perspective view, FIG. 10 is an explanatory diagram showing the operation of the cam, and FIG. Fig. 12 is an enlarged sectional view showing the relationship between the door opening and the operation of the air supply control device, Fig. 13 is a diagram showing the relationship between the door opening and the exhaust air volume and air supply air volume, and Fig. 14 is a diagram showing the relationship between the door opening and the air supply air volume. It is a diagram showing the relationship between the opening degree of the door and the opening wind speed. 1...Body, 3...Opening, 4...Door, 7...
Exhaust passage, 9... Exhaust fan, 11... Air supply passage, 13... Air supply fan, 16... Operation device, 18
... Chain, 31 ... Speed setting device, 34 ... Operating device, 38 ... Damper, 57 ... Micro switch.

Claims (1)

【実用新案登録請求の範囲】 (1) 前面部を開口しこの開口部を開閉する扉を
設けたドラフトチヤンバ本体と、この本体の内部
の排気を行なう排気フアンと、前記開口部の前面
側にエアカーテンを形成するための空気を供給す
る給気フアンと、前記扉の前記開口部に対する開
度の減少に応じて前記排気フアンの回転数を減少
させて排気の風量を制御する排気制御装置と、前
記排気風量の減少に応じて前記給気フアンにより
供給される空気の風量を制限する給気制御装置と
、前記扉の開度が所定値以下になつた状態で前記
給気フアンの駆動を停止する給気フアン停止装置
とを具備してなるドラフトチヤンバ。 (2) 給気制御装置はドラフトチヤンバ本体に設
けた給気通路を開閉するダンパを備えたものであ
る実用新案登録請求の範囲第１項に記載のドラフ
トチヤンバ。[Scope of Claim for Utility Model Registration] (1) A draft chamber main body with an opening at the front and a door for opening and closing this opening, an exhaust fan for exhausting the inside of this main body, and the front side of the opening. an air supply fan that supplies air to form an air curtain; and an exhaust control device that controls the volume of exhaust air by reducing the rotational speed of the exhaust fan in response to a decrease in the degree of opening of the door with respect to the opening. an air supply control device that limits the amount of air supplied by the air supply fan in accordance with a decrease in the amount of exhaust air; and an air supply control device that drives the air supply fan when the degree of opening of the door is below a predetermined value. A draft chamber comprising an air supply fan stop device for stopping the air supply fan. (2) The draft chamber according to claim 1, wherein the air supply control device includes a damper that opens and closes an air supply passage provided in the draft chamber body.
JP1986095574U 1986-06-23 1986-06-23 Expired JPH039793Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986095574U JPH039793Y2 (en) 1986-06-23 1986-06-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986095574U JPH039793Y2 (en) 1986-06-23 1986-06-23

Publications (2)

Publication Number Publication Date
JPS631633U true JPS631633U (en) 1988-01-07
JPH039793Y2 JPH039793Y2 (en) 1991-03-12

Family

ID=30960268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986095574U Expired JPH039793Y2 (en) 1986-06-23 1986-06-23

Country Status (1)

Country Link
JP (1) JPH039793Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8163052B2 (en) 2006-12-20 2012-04-24 Hitachi Industrial Equipment Systems Co., Ltd. Safety cabinet
CN104096595A (en) * 2014-07-28 2014-10-15 天津开发区合普工贸有限公司 Simple, convenient, hand-operated and static type experiment device for simulating low air pressure and oxygen deficiency

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4736855U (en) * 1971-05-13 1972-12-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4736855U (en) * 1971-05-13 1972-12-23

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8163052B2 (en) 2006-12-20 2012-04-24 Hitachi Industrial Equipment Systems Co., Ltd. Safety cabinet
US8382873B2 (en) 2006-12-20 2013-02-26 Hitachi Industrial Equipment Systems Co., Ltd. Safety cabinet
US8728187B2 (en) 2006-12-20 2014-05-20 Hitachi Industrial Equipment Systems Co., Ltd. Safety cabinet
CN104096595A (en) * 2014-07-28 2014-10-15 天津开发区合普工贸有限公司 Simple, convenient, hand-operated and static type experiment device for simulating low air pressure and oxygen deficiency
CN104096595B (en) * 2014-07-28 2015-11-18 天津开发区合普工贸有限公司 Easy manual quiet formula simulation low pressure anoxia experimental facility

Also Published As

Publication number Publication date
JPH039793Y2 (en) 1991-03-12

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