JPS642765Y2 - - Google Patents
Info
- Publication number
- JPS642765Y2 JPS642765Y2 JP1986159890U JP15989086U JPS642765Y2 JP S642765 Y2 JPS642765 Y2 JP S642765Y2 JP 1986159890 U JP1986159890 U JP 1986159890U JP 15989086 U JP15989086 U JP 15989086U JP S642765 Y2 JPS642765 Y2 JP S642765Y2
- Authority
- JP
- Japan
- Prior art keywords
- room
- duct
- ozone
- bypass path
- sterile
- 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
- 239000012717 electrostatic precipitator Substances 0.000 claims description 10
- 239000012716 precipitator Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 25
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 24
- 230000001954 sterilising effect Effects 0.000 description 12
- 238000004659 sterilization and disinfection Methods 0.000 description 10
- 210000004215 spore Anatomy 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000002070 germicidal effect Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 238000011045 prefiltration Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 210000004666 bacterial spore Anatomy 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 229960003444 immunosuppressant agent Drugs 0.000 description 1
- 239000003018 immunosuppressive agent Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229940099607 manganese chloride Drugs 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Electrostatic Separation (AREA)
Description
本考案は、無菌室、殊に手術室のような、常時
使用する必要のないクリーンルームの構成に関す
る。
The present invention relates to the construction of clean rooms that do not need to be used constantly, such as sterile rooms, especially operating rooms.
（背景）
微生物学的に無菌化されたクリーンルームは、
微生物汚染のない安全な外科手術、免疫抑制剤の
投与を受けている患者の予後保護、無菌的な注射
薬の生産、無菌動物の飼育その他の目的のため不
可欠の設備である。このため、本室の構築につい
ては、従来、以下の各手段が綜合的に用いられて
きた。
(a) 室の壁や天井をタイル張りとすると共に目地
をできるだけ平滑に埋めるか又は壁や天井を殺
カビ剤入り塗料で平滑に塗装する。
(b) 室の壁や天井及び床を消毒剤でこまめに洗浄
する。
(c) 室内に殺菌ランプを多数取り付ける。
(d) 室内の空気を与圧し、人の出入口からの塵埃
や微生物の侵入を防ぐ。
(e) 室内への空気の取入口に対細菌及び対塵埃用
の前置フイルター及び主フイルターを取り付け
る。
(f) 室内への取り入れ空気を予め水洗する。
(g) 室内の人や物からの細菌や塵埃の放散をでき
るだけ制限する。
（従来技術の問題点）
しかし上記のような手段を講じても、NASA
クラス100（空気1ft3当たりの菌数100以下）の規
格に適合させるのは容易なことではない。特に最
も設計者を悩ますのは、送風用ダクトに取り付け
られたフイルターを通してカビの胞子や細菌の芽
胞が侵入することである。殊にカビ類は菌糸が風
上側から風下側へ濾材を通して伸張して再び胞子
を形成するので、HEPAフイルターの如き高性
能の濾材を使用しても、時々フイルターを交換す
る以外カビ胞子の透過を防ぐ手段は存しない。し
かるに、高性能のフイルターは高価であり、かつ
交換時に塵埃や微生物がダクトから飛散する結
果、定常状態に達するまでに時間がかかり、この
間、部屋の使用を中断しなければならない。
以上の理由から、多数の殺菌灯を設置して迷入
した胞子等を補足的に殺滅する手段が採られてい
るが、殺菌灯の作用は比較的弱く、しかも装置の
影になる部分には作用が及ばない。そこで、これ
までオゾン、エチレンオキサイド、窒素酸化物等
の殺菌性ガスによるガス滅菌が一部行われてきた
が、これには特別のガス発生設備やポンベなどの
設備を必要とする。
(Background) A microbiologically sterilized clean room is
It is essential equipment for safe surgical operations without microbial contamination, protecting the prognosis of patients receiving immunosuppressants, producing sterile injectable drugs, breeding sterile animals, and other purposes. For this reason, conventionally, the following methods have been comprehensively used to construct the main room. (a) Tile the walls and ceiling of the room and fill in the joints as smoothly as possible, or paint the walls and ceiling smooth with fungicide-containing paint. (b) Clean the walls, ceiling, and floor of the room frequently with disinfectant. (c) Install many germicidal lamps indoors. (d) Pressurize the air in the room to prevent dust and microorganisms from entering through entrances and exits. (e) Install an anti-bacterial and anti-dust filter and a main filter at the air intake into the room. (f) Wash the air taken into the room with water beforehand. (g) Limit the spread of germs and dust from people and objects in the room as much as possible. (Problems with conventional technology) However, even if the above measures are taken, NASA
It is not easy to meet the Class 100 (less than 100 bacteria per ft3 of air) standard. What bothers designers the most is the infiltration of mold and bacterial spores through filters installed in ventilation ducts. In particular, mold hyphae extend through the filter medium from the windward side to the leeward side and form spores again, so even if you use a high-performance filter medium such as a HEPA filter, there is no way to prevent mold spores from passing through unless you occasionally replace the filter. There is no way to prevent it. However, high-performance filters are expensive, and as a result of dust and microorganisms flying out of the ducts when they are replaced, it takes time to reach a steady state, during which time the use of the room must be interrupted. For the above reasons, many germicidal lamps are installed to supplementally kill the stray spores. It doesn't work. Therefore, gas sterilization using sterilizing gases such as ozone, ethylene oxide, and nitrogen oxide has been partially performed, but this requires equipment such as special gas generation equipment and pumps.
そこで本発明が解決しようとする課題は、病院
の手術室等の常時使用する必要のない場所に適し
た簡単、かつ確実な無菌室構造を提供することで
ある。
Therefore, the problem to be solved by the present invention is to provide a simple and reliable sterile room structure suitable for a place that does not need to be used all the time, such as a hospital operating room.
（概念）
しかるに本発明者は研究の結果、通常の無菌室
に除菌の目的で付設されている電気集塵器を殺菌
の目的で利用することを着想した。この電気集塵
器は、本来オゾンを発生する性質を持つている
が、オゾンの毒性を考慮し、通常は集塵効率の低
下を忍んで正コロナ放電状態で使用し、これによ
る集塵効率の低下を集塵器内に流路の延長により
カバーする工夫が凝らされていた。本発明は、こ
のように従来開始厄介視されていた電気集塵器の
オゾン発生能を活用し、これを本来の姿である負
コロナ放電乃至アーク放電状態で動作させること
によつて、発生するオゾンを、例えば病院の手術
室のような常時使用する必要のない室内の殺菌目
的に有効に利用しようとするものである。
（概要）
よつて本考案に係る無菌室は、病院の手術室の
ような常時使用する必要のない無菌室であつて、
該無菌室は、清浄空気送風用ダクト内に取り付け
られた放電極性可変型電気集塵器と、該集塵器よ
り下手の送風ダクトに並列し、内部にオゾン処理
剤が充填されたバイパス経路と、該バイパス経路
の入口部及び出口部の夫々に、該バイパス経路と
対応する送風ダクト（本経路）又は本バイパス経
路の入口部及び出口部を夫々択一的に遮断しうる
シヤツターとを備え、前記電気集塵器の放電極性
の変更及びシヤツターの遮断動作が、夫々室の不
使用、使用準備及び使用の各状態に応じて任意に
切り替えられることができるように構成されてい
ることを特徴とする。以下、考案に関連する諸事
項につき分説する。
（電気集塵器）
本案無菌室においては、空気循環系内に組みこ
まれた電気集塵器極性変更用スイツチを付加する
必要がある。即ち、室内の減菌に利用するときは
静電集塵用直流電源の（−）側を中心のコロナ線
に接続し、（＋）側を接地電極側に接続する。一
方オゾンの発生を抑えながら電気収塵を行わせる
目的、即ち室を使用するときには、電源の（＋）
側を中心のコロナ線に、（−）側を接地電極につ
なぐ。これらの切り替えは簡単な切り替えスイツ
チを介して簡単に行われる。但し、前者の場合は
火花放電による電極の焼損を避けるため、自動放
電調整装置を付加しておくのが好ましい。今日ま
でのところ、電気収塵器の設計については理論的
基礎が殆ど確立していないので、小型のミニエチ
ユアによる実験を基礎に設計を進めるのが適当で
ある。使用電圧は絶縁材料の性能さえ許せば成る
べく高い方が好ましく、通常10〜1000KVの高圧
が用いられる。イオン化室と電着室とを別個にす
る二段階集塵方式は、収塵効率増強のため有力な
方法である。因に、電気収塵器の消費電力は少な
く、100m3の室内空気を毎時100回まで循環させた
場合でも、10時間につき８〜17KVA程度で済む。
空気のオゾン化及び収塵の両面を考慮して、流路
は可及的長く、かつ流速は可及的遅いのが好まし
い。
（バイパス経路）
本考案の重要な特徴として、上記電気収塵器よ
り風下側に、送風ダクト（経路）に平行して内部
にオゾン処理剤が充填されたバイパス経路を備え
る。このバイパス経路は、その入口及び出口部に
夫々シヤツターを備え、本シヤツターは、好まし
くは該入口部及び出口部に揺動可能に取り付けら
れ、必要に応じ本バイパス経路と対応する送風ダ
クト（本経路）又は本バイパス経路の入口部及び
出口部を夫々択一的に遮断しうる。なお、本バイ
パス経路内に充填されるオゾン処理剤としては、
例えば苛性アルカリ液のようなオゾン吸収剤、塩
化マンガン、白金等の分解触媒又はテレピン油、
活性炭などの吸収剤が利用される。
(Concept) However, as a result of research, the present inventor came up with the idea of using an electric precipitator, which is attached to a normal sterile room for the purpose of sterilization, for the purpose of sterilization. This electrostatic precipitator originally has the property of generating ozone, but in consideration of the toxicity of ozone, it is normally used in a positive corona discharge state at the expense of reducing dust collection efficiency, which reduces dust collection efficiency. Efforts were made to compensate for the drop by extending the flow path inside the dust collector. The present invention makes use of the ozone generating ability of an electrostatic precipitator, which has been considered troublesome in the past, and operates it in its original state of negative corona discharge or arc discharge. The purpose is to effectively utilize ozone for the purpose of sterilizing rooms that do not need to be used constantly, such as operating rooms in hospitals. (Summary) Therefore, the sterile room according to the present invention is a sterile room that does not need to be used constantly, such as a hospital operating room,
The sterile room includes a variable discharge polarity electrostatic precipitator installed in a clean air blowing duct, and a bypass path that is parallel to the blower duct and is filled with an ozone treatment agent inside the dust collector. , each of the inlet and outlet of the bypass route is provided with a blower duct (main route) corresponding to the bypass route or a shutter capable of selectively blocking the inlet and outlet of the main bypass route, respectively; The electrostatic precipitator's discharge polarity change and the shutter's shutoff operation can be switched arbitrarily depending on whether the chamber is not in use, ready for use, or in use, respectively. do. Below, various matters related to the idea will be explained. (Electrostatic precipitator) In the sterile room of this invention, it is necessary to add an electrostatic precipitator polarity change switch built into the air circulation system. That is, when using it for indoor sterilization, the (-) side of the DC power supply for electrostatic precipitator is connected to the central corona wire, and the (+) side is connected to the ground electrode side. On the other hand, for the purpose of electrical dust collection while suppressing the generation of ozone, that is, when using the room, the (+)
Connect the side to the center corona wire and the (-) side to the ground electrode. These changes are easily made via a simple toggle switch. However, in the former case, it is preferable to add an automatic discharge adjustment device to avoid burnout of the electrodes due to spark discharge. To date, very little theoretical basis has been established for the design of electrostatic precipitators, so it is appropriate to proceed with the design based on experiments using small mini-equipment units. The working voltage is preferably as high as possible if the performance of the insulating material allows, and usually a high voltage of 10 to 1000 KV is used. A two-stage dust collection system in which the ionization chamber and electrodeposition chamber are separated is an effective method for increasing dust collection efficiency. Incidentally, electric dust collectors consume only a small amount of electricity, consuming only about 8 to 17 KVA per 10 hours even when 100 m 3 of indoor air is circulated up to 100 times per hour.
In consideration of both air ozonization and dust collection, it is preferable that the flow path be as long as possible and that the flow rate be as slow as possible. (Bypass Path) An important feature of the present invention is that a bypass path is provided on the leeward side of the electric precipitator, parallel to the ventilation duct (path), and filled with an ozonating agent. This bypass path is provided with a shutter at its inlet and outlet, respectively, and the shutter is preferably swingably attached to the inlet and outlet, and if necessary, the air duct (main path ) or the inlet and outlet of the bypass path can be selectively blocked. The ozone treatment agent filled in this bypass route is as follows:
For example, ozone absorbers such as lye, decomposition catalysts such as manganese chloride, platinum, or turpentine,
Absorbents such as activated carbon are used.
本案無菌室は、以下の如く使用される。
［準備］
シヤツターを動作させてバイパス経路を閉ざすと
共に、主経路を開き、収塵器を負コロナ放電又は
アーク放電状態にして室内にオゾンを循環させる
と、発生する充分な量のオゾンにより、短時間内
に室内空気が滅菌される。
［使用］
次いで収塵器を正コロナ放電状態に切り替える
と共に、再びシヤツターを動作させてバイパス経
路を開く一方、主経路を閉ざし過剰のオゾンを分
解又は吸収させて室内のオゾン濃度を安全限界値
以下にまで低下させた後、無菌室を使用する。
以上の方式によれば、収塵器から副生物として
発生するオゾンを利用して経済的に無菌化できる
のみでなく、別個にオゾン発生器を設置したりす
るのに比べて、全体の構造及び設備を簡素化する
ことが可能である他、以下の如き作用硬化を奏す
る。
無菌室本来の閉鎖方式を実現できる。
除塵が完全に行われる結果、フイルターの寿
命が大幅に延長する。
常時フアンを運転する必要が無いため、省エ
ネルギー的にも有効である。
電気収塵器の収塵効率を飛躍的に向上する。
The proposed sterile room will be used as follows. [Preparation] Operate the shutter to close the bypass path, open the main path, and set the dust collector in a negative corona discharge or arc discharge state to circulate ozone in the room. Indoor air will be sterilized in time. [Usage] Next, the dust collector is switched to a positive corona discharge state, and the shutter is operated again to open the bypass path, while closing the main path to decompose or absorb excess ozone and bring the indoor ozone concentration below the safe limit. Use a sterile room. According to the above method, not only can sterilization be performed economically by using ozone generated as a byproduct from the dust collector, but the overall structure and In addition to being able to simplify the equipment, it also provides the following functional hardening effects. The original closing method of a sterile room can be realized. As a result of complete dust removal, the life of the filter is greatly extended. Since there is no need to constantly operate the fan, it is also effective in terms of energy conservation. Dramatically improves the dust collection efficiency of electric dust collectors.
以下、考案を具体化した一実施例を中心に考案
の詳細を説明するが、例示は単に説明用のもの
で、発明思想の限定を意図したものではない。
添付図面は、考案を手術用無菌室に適用した例
を示す模型的な側断面図である。
［構造］
無菌室１は、気密ドア２により外界と遮断さ
れ、天井部分一面にHEPAフイルター３が展張
されている。
床４はグレーテイング材により構成され、下方
ダクト５に通じる。
ダクト５は、部屋１の側面へ延びて側方ダクト
６を形成し、該６は、さらに天井３上方の上部ダ
クト７に通じる。
側方ダクト６の下方には、プレフイルター８及
びフアン９が設けられ、またダクト６の中程に電
気収塵機（EP）１０が設けられる。このEP１０
の各電極の極性は、切り換えスイツチ２２により
自由に切り換えることができる。
EP１０より上方の側方ダクト６には、内部に
オゾン用分解吸着剤１４が充たされたバイパス経
路１１が設けられ、該経路は、夫々揺動自在のシ
ヤツター１２，１３により、任意に主経路６，７
から遮断されうる。
空気取り入れパイプ１８は、フアン９の直前に
開口し、根元から先端へ向け夫々シヤツター１
９、HEPAフイルター２０及びプレフイルター
２１を備える。
なお図示を省略したが、オゾン減菌中及び減菌
後、ガス濃度が安全限界の上限値以下に低下する
までの間に誤つて部屋に入室するのを避けるた
め、成るべく表示灯、ブザー、ドアの自動ロツク
などにより、入室を制限できるような安全装置を
設けておくのが好ましい。
［使用法］
先ずシヤツター１２，１３及び１９を図示の状
態にしたまま、かつスイツチ２２を負コロナ放電
側１２ａに倒した状態でフアン９及びEP１０を
運転し、室１内にオゾンを循環させる。減菌所要
時間を短くするため、室内のオゾン濃度は50ppm
以上であることが好ましい。なお、室内のオゾン
濃度は検知器１５を介して室外から常時観測でき
る。
以上のオゾン含有空気の循環により、室内に存
した微生物やその胞子などは、プレフイルター、
EP及びHEPAフイルターの三重の防壁により完
全に除かれるのみでなく、フイルターに付着した
胞子や芽胞の発芽が阻止されるので（又は胞子等
自体も死滅するので）、清浄化のため特に重要な
HEPAフイルターの汚染が防止される。因に、
HEPAフイルター３の背面は、常時殺菌灯１６，
１６……の照射を受けているので、その汚染は一
層確実に抑制される。
以上の如くして室内の無菌化が終われば、スイ
ツチ２２を正コロナ放電側２２ｂに倒してEPを
正コロナ放電状態に切り換えると同時に、シヤツ
ター１２，１３を点線の位置に揺動させてバイパ
ス経路１１を開くと共に主経路６を閉じ、オゾン
を含む空気を、分解吸着剤層１４を経て上部ダク
ト７へ通して除く。そして検知器１５によりオゾ
ン濃度が安全限界以下まで低下したことが確かめ
られた後、シヤツター１２，１３を再び実線位置
に戻し、ドア２から医師、患者等が室内に入室し
た上、直ちにドア２を閉めて手術を始める。
なお、EPにおける正コロナ放電も微量ながら
オゾンを発生させるので、室内の空気に静菌的性
質を与えるのには使用中にも運転を継続するのが
望ましい。
［作用］
以上の装置によれば、手術台１７に対しては上
方のHEPAフイルター３を通つて層流状態の気
流が流下し、この気流に乗つて医師や患者から放
出される微生物や塵埃が絶えず下方のダクト５へ
吸引され、吸塵及び再炉過された上、再び手術台
へ吹き出すので、最も重要な手術台１７近辺は殆
ど無菌に近い状態に保たれる。下表は、５ｍ×４
ｍの大きさの模擬手術室において、オゾン減菌後
の中心部及び四隅の各点における径0.5μｍ以上の
塵埃数をダストカウンターを用いて実測した結果
であるが、考案の効果がよく示されている。な
お、径10μｍ以上の塵埃は検出されなかつた。
The details of the invention will be described below, focusing on an example embodying the invention, but the example is merely for explanation and is not intended to limit the idea of the invention. The accompanying drawing is a schematic side sectional view showing an example in which the invention is applied to a surgical sterile room. [Structure] The sterile room 1 is isolated from the outside world by an airtight door 2, and a HEPA filter 3 is spread over the entire ceiling. The floor 4 is made of grating material and opens into the lower duct 5. The duct 5 extends to the side of the room 1 to form a side duct 6, which further leads to an upper duct 7 above the ceiling 3. A prefilter 8 and a fan 9 are provided below the side duct 6, and an electric dust collector (EP) 10 is provided in the middle of the duct 6. This EP10
The polarity of each electrode can be freely switched by a changeover switch 22. The side duct 6 above the EP 10 is provided with a bypass path 11 filled with an ozone decomposition adsorbent 14, and this path can be freely connected to the main path by swingable shutters 12 and 13, respectively. 6,7
can be blocked from The air intake pipe 18 opens just in front of the fan 9, and extends toward the shutter 1 from the base to the tip.
9. Equipped with a HEPA filter 20 and a pre-filter 21. Although not shown, in order to avoid accidentally entering the room during ozone sterilization and after sterilization until the gas concentration falls below the upper limit of safety limits, be sure to install indicator lights, buzzers, etc. It is preferable to provide a safety device to restrict entry, such as by automatically locking the door. [How to use] First, with the shutters 12, 13, and 19 in the illustrated state and the switch 22 turned to the negative corona discharge side 12a, the fan 9 and EP 10 are operated to circulate ozone in the room 1. In order to shorten the time required for sterilization, the indoor ozone concentration is 50ppm.
It is preferable that it is above. Note that the indoor ozone concentration can be constantly observed from outside via the detector 15. By circulating the ozone-containing air as described above, microorganisms and their spores that existed indoors are removed by the prefilter.
The triple barrier of EP and HEPA filters not only completely removes spores and spores, but also prevents them from germinating (or killing the spores themselves), making them particularly important for cleaning purposes.
Contamination of HEPA filters is prevented. Incidentally,
On the back of the HEPA filter 3, there is a constant germicidal lamp 16,
Since it is irradiated with 16..., its contamination can be suppressed even more reliably. Once the room has been sterilized as described above, the switch 22 is moved to the positive corona discharge side 22b to switch the EP to the positive corona discharge state, and at the same time, the shutters 12 and 13 are swung to the positions indicated by the dotted lines to create a bypass path. 11 is opened and the main path 6 is closed, and air containing ozone is passed through the decomposition adsorbent layer 14 to the upper duct 7 and removed. After the detector 15 confirms that the ozone concentration has fallen below the safe limit, the shutters 12 and 13 are returned to the solid line position, and the doctor, patient, etc. enter the room through the door 2, and the door 2 is immediately closed. Close it and start the surgery. Note that the positive corona discharge in the EP also generates ozone, albeit in a small amount, so it is desirable to continue operation during use in order to impart bacteriostatic properties to the indoor air. [Function] According to the above device, a laminar airflow flows down to the operating table 17 through the HEPA filter 3 above, and microorganisms and dust emitted from the doctor and the patient are carried by this airflow. Since it is constantly sucked into the duct 5 below, sucked and refiltered, and then blown out onto the operating table again, the area around the most important operating table 17 is kept in an almost sterile state. The table below shows 5m x 4
The results of actually measuring the number of dust particles with a diameter of 0.5 μm or more at each point in the center and four corners after ozone sterilization in a mock operating room with a size of ing. Note that no dust with a diameter of 10 μm or more was detected.
【表】
因に、本実験では0.5μｍ未満のダストは測定さ
れていないが、手術台部分では概ねNASAクラ
ス100程度のクリーン度が達成されているものと
考えられる。
なお、部屋を完全に閉鎖系とした場合は、呼吸
による酸素の減少を防ぐため酸素の補給が不可欠
であり、かつ炭酸ガスや水分などの排出物を吸収
又は排出する手段が必要である。これに反し、部
屋を完全に閉鎖系とせず、図示の如く一部づつ外
気を採り入れる方法を用いると酸素の補給や炭酸
ガスを考慮する必要がない。但し、この場合は吸
気の採り入れ口に必ずフイルターを設け、かつ、
要すれば殺菌灯をその付近に配置して、取り入れ
た空気中の細菌や塵埃を極力除去しておく考慮が
必要である。[Table] Incidentally, although dust less than 0.5 μm was not measured in this experiment, it is thought that a cleanliness level of approximately NASA class 100 was achieved in the operating table area. Note that if the room is a completely closed system, it is essential to supply oxygen to prevent oxygen from decreasing due to breathing, and a means to absorb or discharge emissions such as carbon dioxide and moisture is also required. On the other hand, if the room is not completely closed and a method is used in which outside air is introduced in portions as shown in the figure, there is no need to consider oxygen supplementation or carbon dioxide gas. However, in this case, be sure to install a filter at the intake port, and
If necessary, consideration should be given to placing germicidal lamps nearby to remove as much bacteria and dust as possible from the air taken in.
以上説明した通り、本考案によれば、病院の手
術室等の常時使用する必要のない場所に適した簡
単、かつ経済的な無菌室構造を提供できることに
より、無菌化技術乃至外科技術の発展に寄与しう
る。
As explained above, according to the present invention, it is possible to provide a simple and economical sterile room structure suitable for locations that do not need to be used constantly, such as hospital operating rooms, thereby contributing to the development of sterilization technology and surgical technology. Can contribute.
図面は、本考案手段を外科用バイオクリーンル
ームに応用した場合の例を示す模型的な側断面図
である。
図中の主要な符号の意味は以下の通り：１……
無菌室、２……ドア、３，２０……HEPAフイ
ルター、４……グレーチイング、５……下方ダク
ト、６……側方ダクト、７……上部ダクト、８，
２１……プレフイルター、９……フアン、１０…
…電気集塵器（EP）、１１……バイパス経路、１
２，１３，１９……シヤツター、１４……分解吸
着剤、１５……オゾン検知器、１６……殺菌灯、
１７……手術台、２２……極性変更用スイツチ、
２３……手術台。
The drawing is a schematic side sectional view showing an example in which the means of the present invention is applied to a surgical bioclean room. The meanings of the main symbols in the diagram are as follows: 1...
Sterile room, 2...Door, 3, 20...HEPA filter, 4...Grate ring, 5...Lower duct, 6...Side duct, 7...Upper duct, 8,
21...Prefilter, 9...Fan, 10...
...Electrostatic precipitator (EP), 11...Bypass route, 1
2, 13, 19...Shatter, 14...Decomposition adsorbent, 15...Ozone detector, 16...Bactericidal lamp,
17...Operating table, 22...Polarity change switch,
23...Operating table.
Claims (1)
無菌室であつて、該無菌室は、清浄空気送風用ダ
クト内に取り付けられた放電極性可変型電気集塵
器と、該集塵器より下手の送風ダクトに並列し、
内部にオゾン処理剤が充填されたバイパス経路
と、該バイパス経路の入口部及び出口部の夫々
に、該バイパス経路と対応する送風ダクト（本経
路）又は本バイパス経路の入口部及び出口部を
夫々択一的に遮断しうるシヤツターとを備え、前
記電気集塵器の放電極性の変更及びシヤツターの
遮断動作が、夫々室の不使用、使用準備及び使用
の各状態に応じて任意に切り替えられることがで
きるように構成されていることを特徴とする無菌
室。 A sterile room that does not need to be used all the time, such as a hospital operating room, is equipped with a variable discharge polarity electric precipitator installed in a duct for blowing clean air, and a parallel to the air duct of
A bypass path filled with an ozonating agent inside, and a ventilation duct (main path) corresponding to the bypass path, or an inlet and an outlet of the main bypass path, respectively, at the inlet and outlet of the bypass path. and a shutter that can be selectively shut off, and the change of the discharge polarity of the electrostatic precipitator and the shut-off operation of the shutter can be arbitrarily switched depending on the state of non-use, preparation for use, and use of the room, respectively. A sterile room characterized by being configured to allow for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986159890U JPS642765Y2 (en) | 1986-10-18 | 1986-10-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986159890U JPS642765Y2 (en) | 1986-10-18 | 1986-10-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6274836U JPS6274836U (en) | 1987-05-13 |
| JPS642765Y2 true JPS642765Y2 (en) | 1989-01-24 |
Family
ID=31084748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986159890U Expired JPS642765Y2 (en) | 1986-10-18 | 1986-10-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS642765Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004033498A (en) * | 2002-07-03 | 2004-02-05 | Sharp Corp | Method and apparatus for environment adjustment |
| JP4380973B2 (en) * | 2002-08-29 | 2009-12-09 | シャープ株式会社 | Method for reducing viral infection rate, method for sterilizing pathogenic bacteria and / or spore-forming bacteria, and apparatus for carrying out these methods |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924434A (en) * | 1972-06-30 | 1974-03-04 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48113288U (en) * | 1972-03-25 | 1973-12-25 |
-
1986
- 1986-10-18 JP JP1986159890U patent/JPS642765Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924434A (en) * | 1972-06-30 | 1974-03-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6274836U (en) | 1987-05-13 |
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