JPS627824B2 - - Google Patents
Info
- Publication number
- JPS627824B2 JPS627824B2 JP15208180A JP15208180A JPS627824B2 JP S627824 B2 JPS627824 B2 JP S627824B2 JP 15208180 A JP15208180 A JP 15208180A JP 15208180 A JP15208180 A JP 15208180A JP S627824 B2 JPS627824 B2 JP S627824B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- safety cabinet
- safety
- air volume
- cabinet body
- 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
Links
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000012620 biological material Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
Landscapes
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Description
【発明の詳細な説明】
本発明は、バイオハザード（生物災害）対策、
すなわち危険性の高い生物材料の拡散を防止する
ため、国際伝染病等の病原菌を取扱う医学上の実
験や遺伝子組替え実験等に利用される安全キヤビ
ネツトの改良に関する。[Detailed Description of the Invention] The present invention provides biohazard countermeasures,
In other words, it relates to the improvement of safety cabinets used in medical experiments involving pathogenic bacteria such as internationally infectious diseases, genetic recombination experiments, etc., in order to prevent the spread of highly dangerous biological materials.
これらの分野に使用される安全キヤビネツトは
バイオハザード対策用として最も高い安全性が要
求されるクラス安全キヤビネツトとよばれるも
ので、安全キヤビネツト本体と、本体内を一定の
負圧に保つための給、排気装置からなつている。 The safety cabinets used in these fields are called class safety cabinets, which require the highest level of safety as biohazard countermeasures. It consists of an exhaust system.
クラス安全キヤビネツトの本体の構成を第１
図に示す。第１図において、安全キヤビネツト本
体１は、内部に密閉された作業空間２が形成さ
れ、外壁に透視窓３および作業用グローブ４が設
けられた気密容器で、上面に照明箱５、下面に脚
６を備えている。 The structure of the main body of the class safety cabinet is
As shown in the figure. In FIG. 1, a safety cabinet main body 1 is an airtight container with a sealed work space 2 formed inside, a see-through window 3 and work gloves 4 on the outer wall, a lighting box 5 on the top surface, and legs on the bottom surface. It is equipped with 6.
使用時には、図示されていないダンクタンクを
通して生物材料、実験用具等を作業空間２に入
れ、作業は透視窓３から内部を見ながら作業用グ
ローブに手を入れて行なう。キヤビネツト単体で
は十分な作業用スペースが得られないため、通常
図示のように単体キヤビネツトを必要数連結して
多連形として使用する。キヤビネツト本体１の空
気流入口７と給気管９との間および空気両出口８
と排気管１０との間には高性能フイルタ１１，１
２を設置し、これらフイルタにより作業空間２の
清浄度を高めるとともに、実験に供された危険な
生物材料が給、排気系を通つて外部にもれるのを
防いでいる。さらに、排気を行なうことにより、
これらフイルタによる圧力損失を利用して作業空
間２を常時一定の負圧に保ち、内部の生物材料が
安全キヤビネツト本体１の気密不良により外部に
もれるのを防止する。１３，１４は給気側と排気
側の仕切弁である。 When in use, biological materials, experimental tools, etc. are put into the work space 2 through a dunk tank (not shown), and work is done by putting a hand in a work glove while looking inside through the see-through window 3. Since sufficient working space cannot be obtained with a single cabinet, a required number of single cabinets are usually connected to form a multiplex system as shown in the figure. Between the air inlet 7 and the air supply pipe 9 of the cabinet body 1 and both air outlets 8
A high performance filter 11,1 is installed between the exhaust pipe 10 and the exhaust pipe 10.
These filters improve the cleanliness of the work space 2 and prevent dangerous biological materials used in experiments from leaking outside through the supply and exhaust systems. Furthermore, by exhausting the
The pressure loss caused by these filters is utilized to maintain the working space 2 at a constant negative pressure to prevent the biological materials inside from leaking to the outside due to poor airtightness of the safety cabinet body 1. 13 and 14 are gate valves on the air supply side and the exhaust side.
第２図および第３図は安全キヤビネツトおよび
その設置室の給、排気装置を含めた全系統の従来
例を示す図である。１５は設置室、１６，１７は
送風機、１８，１９および２０，２１は排風機、
２２，２３，２４は高性能フイルタ、２５，２６
および２７，２８は排気系統の切換えに使用され
る弁であり、第２図の従来例では、送風機１６と
排風機１８，１９により安全キヤビネツト本体１
の給、排気を、また送風機１７と排風機２０，２
１により設置室１５の給、排気をそれぞれ独立し
て行なつており、第３図の従来例では、安全キヤ
ビネツト用の送風機が省略され、安全キヤビネツ
ト本体１は設置室１５内の空気を吸込むようにな
つている。設置室１５内は高性能フイルタ２２，
２４によつて中程度の清浄度に保たれる。 FIGS. 2 and 3 are diagrams showing a conventional example of the entire system including the safety cabinet and the supply and exhaust equipment for the room in which it is installed. 15 is an installation room, 16, 17 are blowers, 18, 19 and 20, 21 are exhaust fans,
22, 23, 24 are high performance filters, 25, 26
and 27, 28 are valves used to switch the exhaust system. In the conventional example shown in FIG. 2, the safety cabinet main body 1 is
supply and exhaust, and the blower 17 and exhaust fan 20, 2
1, the supply and exhaust of the installation chamber 15 are carried out independently, and in the conventional example shown in FIG. It's summery. Inside the installation chamber 15 is a high-performance filter 22,
24 to maintain a medium level of cleanliness.
第２図および第３図のいずれの場合も、常時設
置室１５内の圧力は外気に対し−５mmAq程度、
安全キヤビネツト本体１内の圧力は設置室１５内
の圧力に対しさらに−15mmAq程度（外気に対し
ては−20mmAq程度）になるように設定されてい
る。 In both cases of Fig. 2 and Fig. 3, the pressure inside the installation chamber 15 is approximately -5 mmAq relative to the outside air.
The pressure inside the safety cabinet body 1 is set to be about -15 mmAq more than the pressure inside the installation chamber 15 (about -20 mmAq with respect to outside air).
クラス安全キヤビネツトで最も重要なこと
は、内部の危険な生物材料（病原菌、ウイルス
等）をキヤビネツト外にもらさないことであり、
このために次のような安全策が施されている。 The most important thing for class-safety cabinets is to prevent dangerous biological materials (pathogens, viruses, etc.) from leaking out of the cabinet.
For this reason, the following safety measures are in place.
(1) 安全キヤビネツト本体を密閉形とし、機械構
造的にもれを防止している。(1) The main body of the safety cabinet is sealed, and the mechanical structure prevents leakage.
(2) 安全キヤビネツト本体の内部を排気して負圧
に保つことにより、気密不良によるもれを防止
している。(2) By evacuating the inside of the safety cabinet and maintaining negative pressure, leaks due to poor airtightness are prevented.
(3) 給、排気は高性能フイルタにより処理して
給、排気系からのもれを防止している。(3) The supply and exhaust gases are treated with high-performance filters to prevent leaks from the supply and exhaust systems.
(4) 排気装置は２系統設置し、通常は１系統のみ
運転し、他の１系統は予備として、１系統が故
障しても排気が停止しないようにしている。(4) Two exhaust systems are installed, and normally only one system is in operation, and the other system is used as a backup so that the exhaust will not stop even if one system breaks down.
第２図および第３図に示す従来例においても上
述の安全策がとられており、通常使用時の安全性
は十分である。 The above-mentioned safety measures are also taken in the conventional examples shown in FIGS. 2 and 3, and the safety during normal use is sufficient.
きかし、これらはいずれも地震のない欧米での
設置例で、安全キヤビネツト本体が地震により破
損した場合の対策については考慮されておらず、
わが国に設置した場合には地震時の安全性に問題
がある。 However, these are all installation examples in Europe and America, where there are no earthquakes, and do not take into account countermeasures in the event that the safety cabinet itself is damaged by an earthquake.
If installed in Japan, there will be safety issues during earthquakes.
クラス安全キヤビネツト、特に図示のように
単体キヤビネツトを多数連結して多連形として使
用する場合には、全体がかなりの長さになるた
め、地震時の床のゆれに対し可という性が乏し
く、安全キヤビネツト本体が破損し、気密性が損
なわれる可能性が多分にある。従来例では、排気
装置を常に一定の排気能力で運転して安全キヤビ
ネツト本体の内部を一定の負圧に保つようにして
いるが、このままでは、地震等により安全キヤビ
ネツト本体１の透視窓３または他の外壁部にキレ
ツやが穴が生じた場合、あるいはグローブ４が破
れた場合に、安全キヤビネツト本体１の内外の圧
力差が小さくなり、これら破損個所からの空気吸
込量がわずかであるため、内部の危険な生物材料
が外に拡散するのを防止できなくなる恐れがあ
る。 Class safety cabinets, especially when used as a multi-unit type by connecting a number of single cabinets as shown in the figure, are quite long as a whole, so they have little resistance to floor shaking during earthquakes. There is a high possibility that the safety cabinet itself will be damaged and its airtightness will be compromised. In the conventional example, the exhaust system is always operated at a constant exhaust capacity to maintain a constant negative pressure inside the safety cabinet body. If a crack or hole occurs in the outer wall of the safety cabinet 1, or if the glove 4 is torn, the pressure difference between the inside and outside of the safety cabinet body 1 will be small, and the amount of air sucked in from these damaged parts will be small. may not be able to prevent the release of dangerous biological materials.
平時から排気風量を多くしておけば、この問題
は解決できるが、第２図、第３図に示すように、
クラス安全キヤビネツトおよびその設置室の空
調は安全性の点からオールフレツシユ方式（非循
還式）となつており、排気風量が多いと多大の冷
暖房エネルギーを消費することになる（通常これ
らの装置は安全上連続運転される）ため、平時の
排気風量は最少限度とすることが望ましい。 This problem can be solved by increasing the exhaust air volume during normal times, but as shown in Figures 2 and 3,
For safety reasons, the air conditioning of class safety cabinets and the rooms in which they are installed is all-fresh (non-circulating type), and if the exhaust air volume is large, a large amount of energy is consumed for heating and cooling (normally, these devices (operated continuously for safety reasons), it is desirable to keep the exhaust air volume to a minimum during normal times.
本発明は上記問題点、すなわち
(i) 地震等により安全キヤビネツト本体が破損し
た場合にもバイオハザードに対する安全性を維
持できること。 The present invention solves the above-mentioned problems, namely (i) it is possible to maintain safety against biohazards even if the main body of the safety cabinet is damaged due to an earthquake or the like;
(ii) 平時に不必要な空調エネルギーを消費しない
こと。(ii) Avoid consuming unnecessary air conditioning energy during normal times.
以上２点を解決した頭書の安全キヤビネツトを
提供することを目的とする。 The purpose of this invention is to provide a safety cabinet that solves the above two problems.
上記目的を達成するため本発明では、安全キヤ
ビネツト用の排気装置を排気能力の可変な構成と
し、風量制御手段により、正常時には該排気装置
を小風量で作動させ、地震等により安全キヤビネ
ツト本体の気密性が損なわれた場合、安全キヤビ
ネツト本体の内外の圧力差の異常低下に応じて該
排気装置の排気能力を増加させることにより、安
全キヤビネツト本体の破損個所からの空気吸込量
を十分大きくして、内部の危険な生物材料が外に
もれるのを防止したものである。 In order to achieve the above object, the present invention has an exhaust system for a safety cabinet with a variable exhaust capacity configuration, and uses an air volume control means to operate the exhaust system at a small air volume during normal times, so that the safety cabinet main body can be airtight in the event of an earthquake or the like. If the safety of the safety cabinet is impaired, the exhaust capacity of the exhaust device is increased in response to the abnormal decrease in the pressure difference between the inside and outside of the safety cabinet body, thereby sufficiently increasing the amount of air sucked from the damaged part of the safety cabinet body. This prevents dangerous biological materials inside from leaking outside.
以下、本発明の実施例を図面によつて説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第４図は発明による安全キヤビネツトとその設
置室の給、排気装置を含めた全体の構成を示す図
である。図中、第２図、第３図と同一符号は待応
する部分を示しており、以下述べる点以外の構成
は第３図と同様である。 FIG. 4 is a diagram showing the overall configuration of the safety cabinet according to the invention and the supply and exhaust system for the room in which it is installed. In the figure, the same reference numerals as in FIGS. 2 and 3 indicate corresponding parts, and the structure is the same as that in FIG. 3 except for the points described below.
本発明の好ましい実施例においては、安全キヤ
ビネツト用の排風機１８′，１９′として従来例の
排風機１８，１９より排気能力の大きいものを用
い、そのいずれか１台のみを常時運転し、他の１
台は予備として、１台が故障しても排気が停止し
ないようにする。 In a preferred embodiment of the present invention, the safety cabinet exhaust fans 18' and 19' have greater exhaust capacity than the conventional exhaust fans 18 and 19, and only one of them is operated at all times, while the other No. 1
The units will be kept as spares so that even if one unit breaks down, the exhaust will not stop.
排風機１８′，１９の吸込側と排気管１０との
間にはそれぞれ電動式空気式等の駆動部を有する
風量調節弁２５′，２６′を設け、排風機１８′，
１９′の停止時にはその系統の風量調節弁を締切
り、排風機１８′，１９′の運転時にはその系統の
風量調節弁を全開にするか、中開きにするかによ
つて排気装置の排気能力を大小２段に変更できる
ようにする。 Air volume control valves 25' and 26' each having a drive unit such as an electric pneumatic type are provided between the suction side of the exhaust fans 18' and 19 and the exhaust pipe 10, and
When the system 19' is stopped, the air volume control valve of that system is closed, and when the exhaust fan 18', 19' is operating, the exhaust capacity of the exhaust system is controlled by whether the air volume control valve of that system is fully open or halfway open. Make it possible to change the size to two levels.
第４図には風量制御手段の概念的な構成のみを
示しており、自動手動切換スイツチ２９を自動側
（実線図示の位置）に切換えると、安全キヤビネ
ツト本体１のおのおのに設置された差圧スイツチ
３０が制御回路に接続され、自動手動切換スイツ
チ２９を手動側（点線図示の位置）に切換える
と、設置室１５内に設置された非常用スイツチ３
１が制御回路に接続される。差圧スイツチ３０
は、安全キヤビネツト本体１の内外の圧力差が一
定値以下になつた時、動作（ON）するように設
定されている。 FIG. 4 shows only the conceptual configuration of the air volume control means, and when the automatic/manual changeover switch 29 is switched to the automatic side (the position shown by the solid line), the differential pressure switch installed in each of the safety cabinet main bodies 1 is activated. 30 is connected to the control circuit, and when the automatic manual changeover switch 29 is switched to the manual side (the position shown by the dotted line), the emergency switch 3 installed in the installation chamber 15 is activated.
1 is connected to the control circuit. Differential pressure switch 30
is set to operate (ON) when the pressure difference between the inside and outside of the safety cabinet body 1 falls below a certain value.
自動手動切換スイツチ２９が自動側にある場
合、正常時には差圧スイツチ３０が不作動
（OFF）であるため、今排風機１８′が運転され
ているものとすると、風量調節弁２５′は中開き
の状態におかれ、風量調節弁２５′による圧力降
下のため排風機１８′は小風量で運転され、安全
キヤビネツト本体１の内部を一定の負圧に維持す
る。 When the automatic manual changeover switch 29 is on the automatic side, the differential pressure switch 30 is inactive (OFF) under normal conditions, so assuming that the exhaust fan 18' is currently operating, the air volume control valve 25' is opened halfway. In this state, the exhaust fan 18' is operated at a small air volume due to the pressure drop caused by the air volume control valve 25', and the interior of the safety cabinet body 1 is maintained at a constant negative pressure.
地震等により安全キヤビネツト本体１の透視窓
３、作業用グローブ４等が破損すると、第４図の
矢印３２，３３，３４で示す破損個所からの外部
空気の流入によつて安全キヤビネツト本体１の内
外の圧力差がほとんどなくなるため、差圧スイツ
チ３０により異常を検出することができる。差圧
スイツチ３０が動作（ON）すると、その信号に
より風量調節弁２５′が全開となり、排風機１
８′がフル運転されるため、排気管１０を通る排
気風量が増加して安全キヤビネツト本体１の破損
個所からの空気吸込量を十分大きくし、危険な生
物材料がもれ出るのを防ぐことができる。 When the see-through window 3, work gloves 4, etc. of the safety cabinet body 1 are damaged due to an earthquake or the like, external air flows into the inside and outside of the safety cabinet body 1 from the damaged areas shown by arrows 32, 33, and 34 in FIG. Since the pressure difference is almost eliminated, the differential pressure switch 30 can detect an abnormality. When the differential pressure switch 30 is activated (ON), the air volume control valve 25' is fully opened by the signal, and the exhaust fan 1 is opened.
8' is operated at full capacity, the amount of exhaust air passing through the exhaust pipe 10 increases and the amount of air sucked in from the damaged part of the safety cabinet body 1 becomes sufficiently large to prevent dangerous biological materials from leaking out. can.
また、安全キヤビネツト本体１に付属する差圧
計（図示せず）が差圧の異常低下を示した時、自
動手動切換スイツチ２９を手動側に切換え、非常
用スイツチ３１をONにしても、差圧スイツチ動
作時と同様に排気風量を増加させることができ
る。 Furthermore, when the differential pressure gauge (not shown) attached to the safety cabinet body 1 indicates an abnormal drop in the differential pressure, even if the automatic manual changeover switch 29 is switched to the manual side and the emergency switch 31 is turned ON, the differential pressure The exhaust air volume can be increased in the same way as when the switch is operated.
第５図は従来例と本発明の安全キヤビネツト破
損時の排気風量の違いを示す図であり、従来例で
は、同図ａに示すように正常時T1に比べ安全キ
ヤビネツト破損時T2の排気風量の増加はわずか
であるが、本発明では、同図ｂに示すように正常
時T1に比べ安全キヤビネツト破損時T2の風量増
加分、すなわち破損個所からの空気吸込量を十分
大きくできる。 Figure 5 is a diagram showing the difference in exhaust air volume when the safety cabinet is damaged between the conventional example and the present invention.In the conventional example, as shown in Figure a, the exhaust air volume at T2 when the safety cabinet is damaged is higher than at T1 during normal operation. Although the increase in air volume is small, according to the present invention, the increase in air volume at T 2 when the safety cabinet is damaged, that is, the amount of air sucked from the damaged area, can be made sufficiently large compared to T 1 at normal time, as shown in FIG.
第６図は安全キヤビネツト破損時に排気風量を
増加させる制御回路の構成例を示す図で、Ｆは風
量調節弁２５′（または２６′）の駆動用モータを
弁が開く方向に回転させる正転用接触器、Ｒは同
じく駆動用モータを弁が閉じる方向に回転させる
逆転用接触器、１ｘは自動手動切換スイツチ２９
に接続されたリレー、１xaはリレー１ｘの動作
によつて閉じる接点、２xaは排風機の運転指令
によつて閉じる接点、２xbは排風機の停止指令
によつて閉じる接点、１LSは風量調節弁の全開
位置で動作するリミツトスイツチ、２LSは風量
調節弁の中開き位置で動作するリミツトスイツ
チ、３LSは風量調節弁の締切り位置で動作する
リミツトスイツチである。 Figure 6 is a diagram showing an example of the configuration of a control circuit that increases the exhaust air volume when the safety cabinet is damaged. R is a reversing contactor that rotates the drive motor in the direction in which the valve closes, and 1x is an automatic manual changeover switch 29
1xa is the contact that closes when the relay 1x operates, 2xa is the contact that closes when the exhaust fan operation command is issued, 2xb is the contact that closes when the exhaust fan is stopped, and 1LS is the contact that closes when the exhaust fan is commanded to stop. 2LS is a limit switch that operates in the fully open position, 2LS is a limit switch that operates in the middle open position of the air volume control valve, and 3LS is a limit switch that operates in the closed position of the air volume control valve.
今、排風機が運転指令を受けると、接点２ax
が閉じることによつて正転用接触器Ｆが付勢さ
れ、駆動用モータが回転して弁が中開き位置に達
すると、リミツトスイツチ２LSの動作により正
転用接触器Ｆが消勢し、この状態で正常運転が行
なわれる。 Now, when the exhaust fan receives an operation command, contact 2ax
When the forward rotation contactor F is closed, the forward rotation contactor F is energized, and when the drive motor rotates and the valve reaches the middle open position, the forward rotation contactor F is deenergized by the operation of the limit switch 2LS, and in this state Normal operation is performed.
運転中に差圧スイツチ３０または非常用スイツ
チ３１がONになると、リレー１ｘの動作により
接点１xaが閉じて正転用接触器Ｆを付勢し、駆
動用モータは弁をさらに開いて排気風量を増加さ
せる。弁が全開になると、リミツトスイツチ１
LSの動作により正転用接触器Ｆが消勢し、停止
指令がくるまで弁は全開位置に保たれる。 When differential pressure switch 30 or emergency switch 31 is turned ON during operation, contact 1xa closes due to the operation of relay 1x, energizing contactor F for forward rotation, and the drive motor further opens the valve to increase the exhaust air volume. let When the valve is fully open, limit switch 1
The forward rotation contactor F is deenergized by the operation of LS, and the valve is kept in the fully open position until a stop command is received.
以上は本発明の一実施例であり、正常時と安全
キヤビネツト破損時の排気能力を変える手段とし
ては、排気系統の弁の開度を変える代わりに、排
風機駆動用モータの速度制御を行なつてもよい。 The above is one embodiment of the present invention, and as a means to change the exhaust capacity during normal conditions and when the safety cabinet is damaged, instead of changing the opening degree of the valve in the exhaust system, the speed of the exhaust fan drive motor is controlled. It's okay.
以上の説明で明らかなように本発明によれば、
安全キヤビネツトの正常時の排気風量を最少限度
におさえて空調エネルギーを浪費することなく、
地震等による安全キヤビネツト本体の破損時に破
損個所からの空気吸込量を十分に大きくして内部
の危険な生物材料が安全キヤビネツト外にもれ出
るのを防止し、安全性を高めることができる。 As is clear from the above description, according to the present invention,
By minimizing the exhaust air volume during normal safety cabinet operation, you can avoid wasting air conditioning energy.
When the safety cabinet main body is damaged due to an earthquake or the like, the amount of air sucked from the damaged part is sufficiently increased to prevent dangerous biological materials inside from leaking out of the safety cabinet, thereby increasing safety.
第１図はクラス安全キヤビネツトの本体構造
図で、ａは正面図、ｂは側断面図、第２図および
第３図は安全キヤビネツトとその設置室の給、排
気装置を含めた全系統の従来例を示す図、第４図
は本発明による安全キヤビネツトとその設置室の
給、排気装置を含めた全系統を示す図、第５図
ａ，ｂは従来例と本発明の安全キヤビネット破損
時の排気風量の違いを示す図、第６図は本発明の
実施例に用いられる制御回路の構成図である。
１：安全キヤビネツト本体、２：作業空間、
３：透視窓、４：作業用グローブ、９：給気管、
１０：排気管、１１，１２，２３：高性能フイル
タ、１８，１９：排風機、２５，２６：風量調節
弁、２９：自動手動切換スイツチ、３０：差圧ス
イツチ、３１：非常用スイツチ。
Figure 1 is a structural diagram of the main body of a class safety cabinet, where a is a front view, b is a side sectional view, and Figures 2 and 3 are conventional safety cabinets and the entire system including the supply and exhaust equipment for the room in which they are installed. Figure 4 shows an example of the safety cabinet according to the present invention and the entire system including the supply and exhaust system in the room where it is installed. FIG. 6, which shows the difference in exhaust air volume, is a configuration diagram of a control circuit used in an embodiment of the present invention. 1: Safety cabinet body, 2: Work space,
3: Transparent window, 4: Work gloves, 9: Air supply pipe,
10: Exhaust pipe, 11, 12, 23: High performance filter, 18, 19: Exhaust fan, 25, 26: Air volume control valve, 29: Automatic manual changeover switch, 30: Differential pressure switch, 31: Emergency switch.
Claims (1)
透視窓と作業用グローブが設けられた安全キヤビ
ネツト本体と、その作業空間を負圧に保つため安
全キヤビネツト本体に高性能フイルタを介して接
続された排気装置を有する安全キヤビネツトにお
いて、排気装置の排気能力を可変とし、安全キヤ
ビネツト本体の内外の圧力差の異常低下に応じて
該排気装置の排気能力を正常時より大きくし、排
気風量を増加させる風量制御手段を設けたことを
特徴とする安全キヤビネツト。1. A safety cabinet body with a sealed working space formed inside, a see-through window and work gloves on the outer wall, and a safety cabinet body connected to the safety cabinet body via a high-performance filter to maintain negative pressure in the working space. In a safety cabinet having an exhaust device, the exhaust capacity of the exhaust device is made variable, and in response to an abnormal decrease in the pressure difference between the inside and outside of the safety cabinet body, the exhaust capacity of the exhaust device is made larger than normal, and the air volume is increased. A safety cabinet characterized by being provided with a control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15208180A JPS5779878A (en) | 1980-10-31 | 1980-10-31 | Safety cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15208180A JPS5779878A (en) | 1980-10-31 | 1980-10-31 | Safety cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5779878A JPS5779878A (en) | 1982-05-19 |
| JPS627824B2 true JPS627824B2 (en) | 1987-02-19 |
Family
ID=15532630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15208180A Granted JPS5779878A (en) | 1980-10-31 | 1980-10-31 | Safety cabinet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5779878A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2677636B2 (en) * | 1988-11-04 | 1997-11-17 | 株式会社東芝 | Work box |
| JP2659906B2 (en) * | 1994-03-02 | 1997-09-30 | 株式会社センジヨー | Work box equipment |
| KR100322242B1 (en) * | 1999-08-25 | 2002-03-18 | 이재천 | Cabinet for preserving harmful microorgainsms |
| KR101176248B1 (en) * | 2005-06-17 | 2012-08-22 | 메르츠 파마 게엠베하 운트 코. 카가아 | Device and method for the production of biologically active compounds by fermentation |
| CN102814202B (en) * | 2011-06-10 | 2015-09-23 | 北京世安科兴科技开发有限责任公司 | A kind of III level biological safety cabinet |
| JP5717773B2 (en) * | 2013-02-04 | 2015-05-13 | パナソニックヘルスケアホールディングス株式会社 | Sterilizer and isolator system with sterilizer |
| JP5717774B2 (en) * | 2013-02-04 | 2015-05-13 | パナソニックヘルスケアホールディングス株式会社 | Isolator system |
-
1980
- 1980-10-31 JP JP15208180A patent/JPS5779878A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5779878A (en) | 1982-05-19 |
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