JP3414252B2 - Operation control method of steam sterilizer - Google Patents
Operation control method of steam sterilizerInfo
- Publication number
- JP3414252B2 JP3414252B2 JP09274098A JP9274098A JP3414252B2 JP 3414252 B2 JP3414252 B2 JP 3414252B2 JP 09274098 A JP09274098 A JP 09274098A JP 9274098 A JP9274098 A JP 9274098A JP 3414252 B2 JP3414252 B2 JP 3414252B2
- Authority
- JP
- Japan
- Prior art keywords
- steam
- sterilization
- sterilization tank
- air
- container
- 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 - Fee Related
Links
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、蒸気滅菌装置の
運転制御方法に関するもので、この発明の蒸気滅菌装置
は、主として、医療用の器具，衣類等の滅菌を行うのに
用いられる。[Field of the Invention The invention, which relates to the operation control how the steam sterilizer, steam sterilization apparatus according to the present invention is mainly used to perform instrument medical, sterilization of clothing, and the like.
【０００２】[0002]
【従来の技術】蒸気滅菌装置は、滅菌槽内へ被滅菌物を
収容した後、この滅菌槽およびこの滅菌槽の外側に設け
た蒸気ジャケットへ蒸気を供給し、蒸気の保有する熱に
より滅菌処理を行う装置である。この滅菌処理は、つぎ
の各工程から成っている。まず、前記蒸気ジャケット内
へ蒸気を供給して前記滅菌槽を予熱する予熱工程を行
い、つぎに前記滅菌槽内の空気を排出する空気排出工程
を行い、続いて蒸気を前記滅菌槽内へ供給して被滅菌物
の滅菌を行う滅菌工程を行い、さらに前記滅菌槽内の蒸
気を排出し清浄な空気を供給する乾燥工程を順に行う。BACKGROUND ART Steam sterilizer, after accommodating the object to be sterilized into a sterile vessel, the sterilization tank and the steam supply to the steam jacket provided outside of the sterilization chamber, sterilized by heat held by the steam Is a device for performing. The sterilization process consists of the steps of the following <br/>. First, in the steam jacket
Row preheating step of preheating the sterilization chamber by supplying steam to the
There, then air discharge step of discharging the air in the sterilization chamber
It was carried out, followed by a gas-steam performs sterilization step for sterilization of supplies to the sterilization chamber to be sterilized, for further said steam sterilization tank was discharged drying process of supplying clean air to the order.
【０００３】被滅菌物を滅菌する際、カスト等の収納容
器に被滅菌物を収納し、この収納容器ごと滅菌すること
がある。この場合、前記滅菌槽内へ蒸気を供給したと
き、前記収納容器の温度は蒸気温度と比較すると低いた
め、蒸気が前記収納容器に接触して凝縮し、水滴として
付着したり、上方に配置された前記収納容器の水滴が下
方に配置された前記収納容器へ落下して付着したりする
ことがある。これらの水滴は、通常、前記滅菌工程時お
よび前記乾燥工程時に蒸発して消滅するが、水滴の量が
多いときには、最後まで残ってしまう。When sterilizing an object to be sterilized, the object to be sterilized may be stored in a storage container such as a cast and the entire storage container may be sterilized. In this case, when supplying steam to the sterilization chamber, temperature of the receiving container is lower when compared to steam temperature, steam condenses in contact with the receiving container, or deposited as water droplets, is placed above It was under water droplets of the receiving container
Sometimes it may adhere and falls to arranged the container towards. These water droplets are usually the but disappears by evaporation during the sterilization process and during the drying process, when the amount of water droplets is large, it may remain until the end.
【０００４】[0004]
【発明が解決しようとする課題】この発明が解決しよう
とする課題は、蒸気滅菌装置において、水滴が残留する
乾燥不良を確実に防止することである。[Problems that the Invention is to Solve] solved by the present invention
The problem to be, in the steam sterilization apparatus and to reliably prevent poor drying water droplets remain.
【０００５】[0005]
【課題を解決するための手段】この発明は、前記課題を
解決するためになされたもので、請求項１に記載の発明
は、空気排出工程，滅菌工程および乾燥工程の各工程に
より滅菌処理を行う蒸気滅菌装置において、被滅菌物を
収納した開孔を有する半閉塞型の収納容器を滅菌槽内へ
収容し、前記空気排出工程時、前記滅菌槽内を真空引き
した後、前記滅菌槽内へほぼ大気圧まで蒸気を導入する
操作を所定回数行い、さらに前記滅菌槽内へ加圧状態ま
で蒸気を導入した後、この蒸気を前記滅菌槽内から排出
して前記滅菌槽内をほぼ大気圧まで戻す操作を所定回数
行い、前記加圧状態までの蒸気導入時に前記収納容器の
外壁面に付着する凝縮水からの液垂れを抑制すべく、前
記真空引きの圧力レベルを設定することを特徴としてい
る。 The present invention solves the above-mentioned problems.
The invention according to claim 1 was made to solve the problems.
An air discharge step, the steam sterilization apparatus for performing sterilization by the steps of sterilizing and drying, the object to be sterilized
Put a semi-closed type storage container with an open hole into the sterilization tank
Store and vacuum the inside of the sterilization tank during the air discharge process.
After that, steam is introduced into the sterilization tank up to almost atmospheric pressure.
Perform the operation a predetermined number of times and pressurize into the sterilization tank.
After introducing steam with this, discharge this steam from the sterilization tank
Then, the operation to return the inside of the sterilization tank to almost atmospheric pressure is performed a predetermined number of times.
Of the storage container at the time of introducing steam to the pressurized state.
To prevent dripping from the condensed water that adheres to the outer wall surface,
It is characterized by setting the vacuum evacuation pressure level.
It
【０００６】さらに、請求項２に記載の発明は、前記空
気排出工程時の真空引きを−１〜−０．３kg／cm 2 Gの圧
力まで行うことを特徴としている。 Further, the invention according to claim 2 is the empty space.
Evacuate the air exhaust process with a pressure of -1 to -0.3 kg / cm 2 G
It is characterized by performing up to strength .
【０００７】[0007]
【発明の実施の形態】つぎに、この発明の実施の形態に
ついて説明する。この発明における蒸気滅菌装置は、密
閉可能な滅菌槽を備え、この滅菌槽内へ被滅菌物を収容
する。この蒸気滅菌装置の運転工程は、少なくとも空気
排出工程，滅菌工程および乾燥工程の各工程を備える。
まず、空気排出工程を行う。この空気排出工程は、前記
滅菌槽内を真空引きして減圧した後、前記滅菌槽内へほ
ぼ大気圧まで蒸気を導入する操作を所定回数行い、さら
に前記滅菌槽内へ加圧状態まで蒸気を導入した後、この
蒸気を前記滅菌槽内から排出して前記滅菌槽１内をほぼ
大気圧まで戻す操作を所定回数行う。前記真空引きおよ
び前記蒸気の導入，排出はそれぞれ、少なくとも１回行
い、必要に応じて複数回行う。前記真空引きを複数回行
うときは、前記滅菌槽内へ蒸気を導入して前記滅菌槽内
をほぼ大気圧まで戻す操作を行った後、再度真空引きす
る。BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described.
explain about. The steam sterilization device in the invention includes a sealable sterilization chamber, for accommodating the object to be sterilized to the sterilization bath. The operation process of the steam sterilizer includes at least each of an air discharge process , a sterilization process and a drying process.
First, an air discharging process is performed. The air discharge process, after the <br/> sterilization vessel depressurized and evacuated, ho into the sterilization chamber
Perform the operation of introducing steam up to atmospheric pressure a predetermined number of times to
Wherein after introducing the steam into the sterilization chamber to a pressurized state, substantially the sterilization tank 1 to the steam discharged from the sterilization bath to
The operation of returning to atmospheric pressure is performed a predetermined number of times. The evacuation and the introduction and discharge of the vapor are performed at least once, and if necessary, a plurality of times. When a plurality of times the evacuation, after an operation of the back by introducing steam into the sterilization chamber the sterilization chamber to approximately atmospheric pressure, evacuated again.
【０００８】蒸気導入口は好ましくは前記滅菌槽の上部
に設け、排出口は好ましくは前記滅菌槽の下部に設け
る。前記滅菌槽内へ加圧状態まで蒸気を導入したとき、
比重差により、前記滅菌槽内の上部に蒸気が充満し、前
記滅菌槽内の下部に空気が充満する。したがって、蒸気
を前記滅菌槽の上部から導入して下部から排出すること
により、前記滅菌槽内の空気を下方へ向かって蒸気によ
り押し出すことができ、前記滅菌槽内の空気の排出を確
実にかつ短時間で行うことができる。[0008] Steam inlet is preferably provided above the sterilization vessel, the outlet is preferably provided at the bottom of the sterilization chamber. When steam is introduced into the sterilization tank to a pressurized state ,
The difference in specific gravity, vapor fills the upper part of the sterilization chamber, before
Air is filled in the lower portion of serial sterile tank. Therefore, by discharging from the bottom by introducing steam from the top of the sterilizing chamber, the can be pushed out by the steam towards the air sterilization tank downwards, reliably and the discharge of air in the sterilization chamber It can be done in a short time.
【０００９】つぎに、滅菌工程を行う。この滅菌工程
は、前記滅菌槽内へ蒸気を供給し、前記滅菌槽内に蒸気
を充満させて設定圧力に維持した状態を所定時間継続す
る。滅菌工程終了後、乾燥工程を行う。この乾燥工程
は、前記滅菌槽内の蒸気を排出し、前記滅菌槽内の真空
引き（減圧）と前記滅菌槽への清浄な空気の供給を１回
または複数回行う。ここで、前記空気排出工程に先立っ
て、予熱工程を行うこともできる。この予熱工程は、前
記滅菌槽の外側に設けた加熱手段を作用させて、前記滅
菌槽内を予熱するものである。以上の各工程の制御は、
予め設定したプログラムにしたがい、制御器から指令信
号を出力することにより行う。[0009] Next, perform the sterilization process. This sterilization step, the steam supply to the sterilization vessel, the state is continued for Jo Tokoro time that is maintained at the set pressure is filled steam to the sterilization bath. After the sterilization process is completed, a drying process is performed. The drying process, the discharged steam sterilization tank, for supplying clean air evacuation of the sterilization chamber and (vacuum) to the sterilization tank 1 or more times. Here, a preheating step may be performed prior to the air discharging step. This preheating step is, before
Serial by the action of heating means provided on the outside of the sterilization chamber is for preheating the dark <br/> bacteria tank. The control of each process above is
Follow the preset program, carried out by outputting the command signal from the controller.
【００１０】通常、被滅菌物は、カストやコンテナ等の
収納容器に収納して前記滅菌槽内へ収容し、滅菌処理を
行う。この収納容器は、頂壁や側壁に開孔を設けたり、
本体と蓋との間に隙間を形成して、半閉塞型となってい
る。したがって、前記空気排出工程時、真空引きを行う
ことにより、前記収納容器内の空気が排出されて前記収
納容器内の残留空気量が減少し、前記滅菌槽内へ加圧状
態まで蒸気を導入したとき、前記収納容器の外壁面と内
壁面の両方で蒸気が接触して凝縮し、外壁面に付着する
凝縮水の量が相対的に減少する。したがって、前記収納
容器からの水滴の落下が抑制され、水滴が残留する乾燥
不良を防止することができる。前記収納容器の内外両壁
面に付着した凝縮水は、前記滅菌工程および前記乾燥工
程の間に蒸発し、消滅する。 [0010] Normally, the thing to be sterilized is housed in the container, such as cust and containers housed into the sterilization tank, performs sterilization. This storage container has openings on the top wall and side walls,
A semi-closed type is formed by forming a gap between the main body and the lid. Therefore, when the air discharge step, by performing evacuation, the residual air amount of the revenue <br/> housed in the container air storage container is discharged is reduced, pressure to the sterilization chamber flatly
Upon introduction of steam to condition the container in contact with steam in both the outer wall surface and the inner wall surface of the condensed, the amount of condensed water adhering to the outer wall surface is relatively reduced. Therefore, the fall of water droplets from the container is suppressed, thereby preventing poor drying water droplets remain. The condensed water adhering to the inner and outer wall surfaces of the storage container evaporates and disappears during the sterilization step and the drying step .
【００１１】前記空気排出工程時の真空引きの圧力レベ
ルは、前記加圧状態までの蒸気導入時に前記収納容器の
外壁面に付着する凝縮水からの液垂れを抑制するように
設定し、被滅菌物の種類や前記収納容器の形状，熱容量
および熱伝導性等を考慮して設定する。具体的な設定範
囲としては、−１〜−０．３kg／cm2Gの範囲に設定する
が、これは、−０．３kg／cm2G以上では、前記収納容器
内の空気の排除率が低下するためである。また、圧力レ
ベルを低くし過ぎると、前記収納容器の内壁面側で発生
する凝縮水の量が相対的に増える。内壁面に付着する凝
縮水は、外壁面に付着する凝縮水と比較すると相対的に
蒸発しにくいので、前記収納容器内で発生する凝縮水の
量をあまり増やさないためには、好ましくは圧力レベル
を−０．８〜−０．３kg／cm2Gの範囲に設定する。[0011] The pressure level of the vacuum when the air discharge step is set so as to suppress the dripping from the condensed water adhering to the outer wall surface of the container during vapor introduction to the pressurized state, to be sterilized object type and shape of the container, is set in consideration of the heat capacity and thermal conductivity and the like. Specific set range, but set in a range of -1~-0.3kg / cm 2 G, which, -0.3kg / cm at 2 G or more, air rejection of the storage container is This is because it will decrease. Also, too low pressure level, the amount of condensed water generated at the inner wall surface of the container is increased relatively. Condensed water adhered to the inner wall surface, so that compared to the condensed water that adheres to the outer wall surface relatively hard evaporated, in order not so much increase the amount of condensed water generated in the storage vessel, preferably at a pressure level Is set in the range of −0.8 to −0.3 kg / cm 2 G.
【００１２】[0012]
【実施例】以下、この発明の具体的実施例を図面に基づ
いて詳細に説明する。図１は、この発明における蒸気滅
菌装置の説明図である。滅菌槽１は、扉（図示省略）を
備えた被滅菌物の出入口があり、この扉を閉じることで
前記滅菌槽１を完全に密閉することができるようになっ
ている。被滅菌物は、カストやコンテナ等の半閉塞型の
収納容器２に収納して、前記滅菌槽１内の棚３に載せ
る。前記滅菌槽１の周囲には、加熱管４を設け、この加
熱管４内へ蒸気を供給することにより、前記滅菌槽１を
外側から加熱する。また、前記滅菌槽１を二重缶状に形
成して前記滅菌槽１の外側に蒸気ジャケットを設け、こ
の蒸気ジャケットへ蒸気を供給して、前記滅菌槽１を外
側から加熱するようにすることもできる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory diagram of a steam sterilizer according to the present invention. The sterilization tank 1 has an entrance / exit for an object to be sterilized, which is equipped with a door (not shown).
The sterilization tank 1 can be completely sealed. Sterilization subject is accommodated in container 2 of semi-closed such as cust or container, placed on a shelf 3 of the inner sterilization tank 1. Wherein the periphery of the sterilization vessel 1, the heating tube 4 is provided, by supplying the steam to the heating pipe 4, for heating the sterilization tank 1 from the outside. Further, the steam jacket is provided sterilization tank 1 to form a double container shape outside the sterilization tank 1, by supplying the steam to the steam jacket, be adapted to heat the sterilization tank 1 from the outside You can also
【００１３】前記加熱管４は、断面略円形状のものを複
数本、前記滅菌槽１の外壁に溶接により固着してあり、
その上端を上部ヘッダ５に接続し、下端を下部ヘッダ６
に接続している。図示した実施例では、前記上部ヘッダ
５の下部に接続した前記加熱管４は、前記滅菌槽１の右
側壁に沿って配置し、前記上部ヘッダ５の側部に接続し
た前記加熱管４は、前記滅菌槽１の頂壁，左側壁および
底壁に沿って配置している。また、図示は省略している
が、前記上部ヘッダ５の長手方向に沿っても、複数本の
前記加熱管４を並列に接続してあり、前記加熱管４が前
記滅菌槽１の外壁面のほぼ全体を覆うように配置してい
る。[0013] The heating pipe 4, Yes and fixed by welding those substantially circular cross section a plurality of, in the outer wall of the sterilization vessel 1,
Connect the upper end to the upper header 5 and the lower end to the lower header 6.
Connected to. In the illustrated embodiment, the heating tube 4 connected to the lower portion of the upper header 5, the place along the right side wall of the sterilization vessel 1, the heating tube 4 connected to the side of the upper header 5, the sterilization tank 1 top wall are arranged along the left side wall and the bottom wall. Although not shown in the figure, a plurality of upper headers 5 are also arranged along the longitudinal direction of the upper header 5.
Be connected to one said heating pipe 4 in parallel, the heating pipe 4 before
The sterilization tank 1 is arranged so as to cover almost the entire outer wall surface.
【００１４】前記上部ヘッダ５には、第一蒸気供給弁７
および第一圧力調整弁８を設けた第一蒸気供給ライン９
を接続している。この第一蒸気供給ライン９における第
一蒸気供給弁７の上流位置から、第二蒸気供給ライン１
０を分岐させ、その先端を前記滅菌槽１の右側壁上部に
設けた蒸気導入口１１に接続している。前記第二蒸気供
給ライン１０には、第二蒸気供給弁１２および第二圧力
調整弁１３を設けている。前記第一蒸気供給弁７および
前記第二蒸気供給弁１２の開閉を制御することにより、
前記加熱管４および前記滅菌槽１への蒸気の供給を制御
する。The upper header 5 has a first steam supply valve 7
And a first steam supply line 9 provided with a first pressure regulating valve 8
Are connected. From the upstream position of the first steam supply valve 7 in the first steam supply line 9, the second steam supply line 1
0 is branched and connected to the distal end to the steam inlet 11 provided on the right side wall upper portion of the sterilization tank 1. The second steam supply line 10 is provided with a second steam supply valve 12 and a second pressure adjusting valve 13. The first steam supply valve 7 and
By controlling the opening and closing of the second steam supply valve 12,
Controlling the supply of vapor of the the heating tube 4 and the sterilization tank 1.
【００１５】前記滅菌槽１には、空気供給ライン１４を
接続している。この空気供給ライン１４には、上流側か
ら順に、エアフィルタ１５，空気供給弁１６および第一
逆止弁１７を設けてあり、前記エアフィルタ１５を通し
て細菌やほこり等を除去した清浄な空気を前記滅菌槽１
内へ供給するようになっている。[0015] The in sterilization tank 1 is connected to an air supply line 14. Is this the air supply line 14 upstream ?
Et turn, the air filter 15, is provided with an air supply valve 16 and the first check valve 17, the air filter 15 clean air the sterilization bath to remove bacteria and dust, etc. throughout the
It is designed to be supplied inside .
【００１６】前記下部ヘッダ６には、第一排出ライン１
８を接続している。この第一排出ライン１８には、第一
スチームトラップ１９および第二逆止弁２０を設けてい
る。前記滅菌槽１の底壁に設けた排出口２１には、第二
排出ライン２２を接続している。この第二排出ライン２
２には、第一排出弁２３，第三逆止弁２４，真空ポンプ
２５および第四逆止弁２６を設けている。前記第二排出
ライン２２からは、第三排出ライン２７および第四排出
ライン２８を分岐させている。前記第三排出ライン２７
には、第二スチームトラップ２９および第五逆止弁３０
を設けている。前記第四排出ライン２８には、第二排出
弁３１および第六逆止弁３２を設けている。前記第一排
出ライン１８，前記第二排出ライン２２，前記第三排出
ライン２７および前記第四排出ライン２８は、下流位置
で合流している。[0016] The lower header 6, the first discharge line 1
8 are connected. The first discharge line 18 is provided with a first steam trap 19 and a second check valve 20. Wherein the discharge opening 21 provided in the bottom wall of the sterilization tank 1 is connected to the second discharge line 22. This second discharge line 2
2 is provided with a first discharge valve 23 , a third check valve 24 , a vacuum pump 25 and a fourth check valve 26. A third discharge line 27 and a fourth discharge line 28 are branched from the second discharge line 22. The third discharge line 27
The second steam trap 29 and the fifth check valve 30.
Is provided. Wherein the fourth discharge line 28 is provided with a second discharge valve 31 and the sixth check valve 32. It said first discharge line 18, the second discharge line 22, the third discharge line 27 and the fourth discharge line 28 is joined at the downstream position.
【００１７】前記滅菌槽１には、壁面温度を検出する温
度センサ３３と、内部の圧力を検出する圧力センサ３４
とを設けている。制御器３５により、前記温度センサ３
３からの検出信号に基づいて前記第一蒸気供給弁７の開
閉を制御し、前記圧力センサ３４からの検出信号に基づ
いて前記第二蒸気供給弁１２の開閉を制御する。前記第
一蒸気供給弁７の開閉制御については、前記加熱管４内
の圧力を検出し、その検出信号に基づいて行うこともで
きる。[0017] The in sterilization tank 1 includes a temperature sensor 33 for detecting the wall temperature, pressure sensor 34 for detecting the pressure inside
And are provided. The temperature sensor 3 is controlled by the controller 35.
Based on the detection signal from the 3 controls opening and closing of the first steam supply valve 7, for controlling the opening and closing of the second steam supply valve 12 based on a detection signal from the pressure sensor 34. The opening / closing control of the first steam supply valve 7 may be performed by detecting the pressure in the heating pipe 4 and based on the detection signal.
【００１８】つぎに、前記構成の作用を図２に基づいて
説明する。図２は、各工程における前記滅菌槽１内の圧
力変化を示している。各工程は、予め設定したプログラ
ムにしたがい、前記制御器３５により制御する。[0018] Next, will be described with reference to the action of the arrangement in FIG. Figure 2 shows the pressure change in the sterilization tank 1 in each step. Each step is controlled by the controller 35 according to a preset program.
【００１９】まず、被滅菌物を前記収納容器２に収納し
て前記滅菌槽１内へ搬入後、前記扉を閉め、前記加熱管
４内へ前記第一蒸気供給ライン９を通して蒸気を供給し
（前記第一蒸気供給弁７開，前記第二蒸気供給弁１２
閉）、前記滅菌槽１を加温する予熱工程を行う。前記加
熱管４内で生じたドレンは、前記第一排出ライン１８か
ら外部へ排出する。後述する空気排出工程，滅菌工程お
よび乾燥工程においても、前記加熱管４内へ蒸気を供給
し、前記滅菌槽１の加熱を継続する。Firstly, after carried into the sterilization tank 1 accommodating the object to be sterilized in the container 2, closing the door, to supply steam through said first steam supply line 9 to the heating pipe 4 ( the first steam supply valve 7 opens, the second steam supply valve 12
Closed), a preheating step of heating the sterilization tank 1. Drain said generated by pressurized <br/> exchanger tube within 4 or the first discharge line 18
Discharged to the Luo outside. Air discharge step described later, even in the sterilization and drying steps, to supply steam to the heating pipe 4, to continue the heating of the sterilization tank 1.
【００２０】つぎに、空気排出工程を行う。この空気排
出工程においては、まず前記第一排出弁２３を開くとと
もに前記真空ポンプ２５を稼動させて、前記滅菌槽１内
を−０．８kg／cm2Gまで真空引きする。そして、前記第
一排出弁２３を閉じるとともに前記真空ポンプ２５を停
止させ、前記第二蒸気供給弁１２を開いて前記滅菌槽１
内へ蒸気をほぼ大気圧まで導入する。この真空引きと蒸
気導入の操作を２回繰り返す。２回目の真空引きのとき
には、前記収納容器２に付着している凝縮水が、所定
量、気化蒸発する。つぎに、前記第二蒸気供給弁１２の
開状態を継続するとともに、前記第二排出弁３１を開
き、前記滅菌槽１内へ蒸気を流通させながら空気を排出
するパージを行う（約１０秒）。このパージは、蒸気に
よって前記滅菌槽１内の空気を置換するもので、空気と
の比重差を利用して空気を押し出すように排除する。そ
の後、前記第二排出弁３１を閉じ、前記滅菌槽１内へ蒸
気を２．１kg／cm2Gまで導入する。そして、前記第二蒸
気供給弁１２を閉じるとともに、前記第二排出弁３１を
開き、前記滅菌槽１から蒸気を排出し、前記滅菌槽１内
の圧力をほぼ大気圧まで戻す。この蒸気の導入，排出を
２回繰り返す。前記真空引きおよび前記蒸気の導入，排
出において、その回数および圧力の設定は、適宜変更可
能になっている。[0020] Next, carry out the air discharge step. In this air discharge step, first the by operating the vacuum pump 25 with opening the first exhaust valve 23, evacuated the sterilization tank 1 to -0.8kg / cm 2 G. Then, the closing the first discharge valve 23 to stop the vacuum pump 25, the sterilization tank 1 opening the second steam supply valve 12
Steam is introduced into the interior up to almost atmospheric pressure. This operation of evacuation and introduction of steam is repeated twice. When the second vacuum, the condensed water adhering to the container 2, a predetermined amount, vaporized evaporation. The next, while continuing the open state of the second steam supply valve 12 to open the second discharge valve 31, to purge for discharging air while passing steam into the sterilization tank 1 (about 10 seconds) . This purge is intended to replace the air in said sterilization chamber 1 by the vapor, eliminating by utilizing specific gravity difference between the air to push the air. Thereafter, the closed second discharge valve 31, is introduced to 2.1 kg / cm 2 G the steam <br/> vapor to the sterilization tank 1. Then, the closing said second steam supply valve 12 to open the second discharge valve 31, the steam is discharged from the sterilization vessel 1, it returns the pressure in the sterilization tank 1 to about atmospheric pressure. The introduction and discharge of this steam are repeated twice. In the evacuation and the introduction / exhaust of the steam, the number of times and the setting of the pressure can be appropriately changed.
【００２１】前記空気排出工程時、前記滅菌槽１内へ蒸
気を導入すると、比重差により、前記滅菌槽１の上部に
蒸気が充満し、前記滅菌槽１の下部に空気が充満する。
したがって、蒸気を前記滅菌槽１の上部の前記蒸気導入
口１１から導入して下部の前記排出口２１から排出する
ことにより、前記滅菌槽１内の空気を下方へ向かって蒸
気により押し出すことができ、前記滅菌槽１内の空気の
排出を確実にかつ短時間で行うことができる。[0021] During the air discharge step, the introduction of steam <br/> vapor to the sterilization tank 1, the difference in specific gravity, the vapor fills the upper part of the sterilization tank 1, air in the lower portion of the sterilization tank 1 Fill up.
Therefore, by discharging by introducing steam from the steam inlet 11 of the upper portion of the sterilization tank 1 from the bottom of the outlet 21, it is possible to push the steam air within said sterilization vessel 1 downwards , can be discharged air within said sterilization chamber 1 reliably and in a short time.
【００２２】前記空気排出工程終了後、滅菌工程へ移
る。前記第二排出弁３１を閉じるとともに、前記第二蒸
気供給ライン１０を通して（前記第二蒸気供給弁１２
開）前記滅菌槽１内へ加熱滅菌用の蒸気を供給し、前記
滅菌槽１内に蒸気を充満させた状態を所定時間継続す
る。前記滅菌槽１内の圧力は、滅菌温度１３５℃に対応
する飽和蒸気圧力２．２kg／cm2Gに維持される。蒸気の
保有する熱により、被滅菌物に付着している雑菌を加熱
滅菌する。前記滅菌槽１内で生じたドレンは、前記第三
排出ライン２７から外部へ排出する。[0022] After the air discharge step is completed, move <br/> Ru to a sterilization process. Closes the said second discharge valve 31, through the second steam supply line 10 (the second steam supply valve 12
Open) to supply steam for heat sterilization to the sterilization tank 1, it continues for a predetermined period of time while being filled with steam to said <br/> sterilization tank 1. The pressure in the sterilization tank 1 is maintained at a saturated steam pressure 2.2 kg / cm 2 G, corresponding to the sterilization temperature 135 ° C.. The heat retained by the steam heat-sterilizes the various bacteria adhering to the object to be sterilized. Drain generated in the inside sterilization tank 1 is discharged from the third discharge line 27 to the outside.
【００２３】前記滅菌工程が終了すると、前記第二蒸気
供給弁１２を閉じて前記滅菌槽１への蒸気の供給を停止
し、乾燥工程へ移る。この乾燥工程では、前記第一排出
弁２３を開くとともに前記真空ポンプ２５を駆動して、
前記滅菌槽１内を−０．９５kg／cm2Gまで減圧する。そ
して、所定時間経過後、前記空気供給弁１６を開き、前
記エアフィルタ１５を通して清浄空気を前記滅菌槽１内
へ供給する。これらの減圧動作と清浄空気供給動作は、
交互に複数回繰り返して行うこともできる。乾燥工程終
了後、前記扉を開き、被滅菌物を取り出す。[0023] The the sterilization step is completed, stops the supply of steam into the sterilization tank 1 is closed the second steam supply valve 12, and proceeds to the drying process. The drying process drives the vacuum pump 25 with opening the first exhaust valve 23,
The pressure inside the sterilization tank 1 is reduced to -0.95 kg / cm 2 G. Then, after a predetermined time has elapsed, to open the air supply valve 16, before
Serial The sterilization tank 1 clean air through an air filter 15
Supplied to. These decompression operation and clean air supply operation are
It is also possible to repeat alternately a plurality of times. After drying step is completed, open the door, take out the object to be sterilized.
【００２４】図３に、この発明の実施例における作用を
模式的に示す。前記収納容器２は、本体３６と蓋３７と
からなり、蓋３７には複数個の開孔３８を設けている。
被滅菌物は図示省略している。前記空気排出工程時に真
空引きを行うと、前記収納容器２内の空気が所定量、前
記開孔３８を通して排除される。そうすると、加圧状態
までの蒸気導入時、排除された空気量の分だけ、蒸気が
前記開孔３８を通して前記収納容器２内へ流入する。こ
のとき、前記滅菌槽１内は加圧状態にあるので、前記収
納容器２内の空気の体積は、蒸気と空気の圧力差の分だ
け、さらに減少する。そして、比重差により、前記収納
容器２内は、蒸気と空気とが上下に層状に分かれる。よ
って、前記収納容器２の内壁面の上方部と、外壁面全体
に蒸気が接触し、凝縮水が付着する。FIG. 3 schematically shows the operation of the embodiment of the present invention. The storage container 2 comprises a main body 36 and a lid 37, and the lid 37 is provided with a plurality of openings 38.
The object to be sterilized is not shown. Doing vacuuming when the air discharge step, the air a predetermined amount of the receiving vessel 2, before
It is eliminated through the serial opening 38. Then, the pressurized state
When the steam is introduced up to
It flows into the storage container 2 through the hole 38. At this time, since the sterilization tank 1 is in the pressurized state, the air volume of the yield <br/> housed container 2, only minute pressure difference between the steam and air, further reduced. The specific gravity difference, said container 2, and the steam and air divided in layers vertically. Thus, an upper portion of the inner wall surface of the container 2, steam is brought into contact with the entire outer wall surface, condensed water adheres.
【００２５】前記収納容器２に付着する凝縮水の量は、
前記収納容器２の熱容量に対応してほぼ一定である。し
たがって、内壁面に凝縮水が付着する分だけ、外壁面に
付着する凝縮水の量が相対的に減少し、前記収納容器２
からの水滴の落下が抑制される。この外壁面に付着する
凝縮水の量を液垂れがほとんど発生しない量に制御する
には、前記収納容器２内の残留空気量を調整すればよ
く、前記空気排出工程時の真空引きの圧力レベルを適切
な値に設定する。この圧力レベルは、被滅菌物の種類や
前記収納容器２の形状，熱容量および熱伝導性等を考慮
して設定する。前記収納容器２の内外両壁面に付着した
凝縮水は、前記滅菌工程および前記乾燥工程の間に熱を
受けて蒸発し、また、前記乾燥工程時に減圧することに
より気化蒸発し、消滅する。The amount of condensed water adhering to the container 2,
It is substantially constant in response to the heat capacity of the container 2. Therefore, an amount corresponding to the condensed water from adhering to the inner wall surface, the amount of condensed water adhering to the outer wall surface is relatively reduced, the container 2
Water drops are suppressed from falling. , Said by adjusting the residual amount of air in the container 2 may, pressure level of vacuum at the time of the air discharge step to control the amount of condensed water adhering to the outer wall surface to the amount dripping hardly occurs To an appropriate value. This pressure level is
The shape of the container 2, is set in consideration of the heat capacity and thermal conductivity and the like. The receiving condensed water attached to the inner and outer walls of the container 2, the evaporated undergoing sterilization process and heat during the drying process, also, the drying process to vaporize evaporated under reduced pressure at, disappear.
【００２６】通常、滅菌処理を行う場合、複数の前記収
納容器２が前記滅菌槽１内へ収容されるが、前記各収納
容器２の凝縮水の蒸発量は、前記各収納容器２の熱容量
に対応する。前記各収納容器２は、自分の熱容量に応じ
て付着した凝縮水の量だけは蒸発可能であるが、たとえ
ば上方に配置された前記収納容器２から落下して余分に
付着した分については蒸発させることができず、水滴と
して残ってしまう。しかし、この発明によれば、液垂れ
が抑制されるので、前記収納容器２に付着した凝縮水は
全て蒸発し、水滴として残留することがない。 Usually, when performing sterilization, a plurality of the
Although paid container 2 is accommodated in the sterilization tank 1, the amount of evaporation of condensed water in each container 2 corresponds to the heat capacity of the container 2. Each container 2, but the amount of the condensed water attached according to their own heat capacity can be evaporated, if
For example, the excess amount of the liquid that has fallen from the storage container 2 arranged above and cannot be evaporated cannot be evaporated and remains as a water drop. However, according to the present invention, the dripping is suppressed, the condensed water attached to the container 2 is completely evaporated, never remain as water drops.
【００２７】[0027]
【発明の効果】この発明によれば、滅菌槽内の空気の排
出を確実にかつ短時間で行うことができるとともに、水
滴が残留する乾燥不良を確実に防止することができる。 According to the present invention, it is possible to reliably discharge the air in the sterilization tank in a short time, and to reliably prevent defective drying in which water drops remain .
【図１】この発明における蒸気滅菌装置の一実施例を示
す説明図である。FIG. 1 is an explanatory view showing an embodiment of a steam sterilizer according to the present invention.
【図２】この発明の実施例における各工程の説明図であ
る。FIG. 2 is an explanatory diagram of each step in the embodiment of the present invention.
【図３】この発明の実施例における作用を模式的に示す
説明図である。FIG. 3 is an explanatory view schematically showing the operation of the embodiment of the present invention.
１ 滅菌槽 ２ 収納容器 １１ 蒸気導入口 ２１ 排出口 ３５ 制御器３８ 開孔 1 Sterilization Tank 2 Storage Container 11 Steam Inlet 21 Outlet 35 Controller 38 Opening
フロントページの続き (56)参考文献 特開 平７−308121（ＪＰ，Ａ) 特開 昭55−110553（ＪＰ，Ａ) 特開 昭56−83351（ＪＰ，Ａ) 特開 平４−28370（ＪＰ，Ａ) 特開 昭59−34257（ＪＰ，Ａ) 特開 昭58−97362（ＪＰ，Ａ) 特開 昭62−292164（ＪＰ，Ａ) 特開 昭59−51852（ＪＰ，Ａ) 特開 昭59−57657（ＪＰ，Ａ) 特開 昭63−311959（ＪＰ，Ａ) 特開 平３−210267（ＪＰ，Ａ) 特開 平７−31660（ＪＰ，Ａ) 実開 平４−128747（ＪＰ，Ｕ) 特公 昭64−3503（ＪＰ，Ｂ２) 実公 昭62−35483（ＪＰ，Ｙ２) 実公 平４−31069（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) A61L 2/06 A61L 2/24 Continuation of front page (56) Reference JP-A-7-308121 (JP, A) JP-A-55-110553 (JP, A) JP-A-56-83351 (JP, A) JP-A-4-28370 (JP , A) JP 59-34257 (JP, A) JP 58-97362 (JP, A) JP 62-292164 (JP, A) JP 59-51852 (JP, A) JP 59-57657 (JP, A) JP-A-63-311959 (JP, A) JP-A-3-210267 (JP, A) JP-A-7-31660 (JP, A) Actual development 4-128747 (JP, U) Japanese Patent Publication No. 64-3503 (JP, B2) Actual Publication No. 62-35483 (JP, Y2) Actual Publication No. 4-31069 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) ) A61L 2/06 A61L 2/24
Claims (2)
の各工程により滅菌処理を行う蒸気滅菌装置において、
被滅菌物を収納した開孔３８を有する半閉塞型の収納容
器２を滅菌槽１内へ収容し、前記空気排出工程時、前記
滅菌槽１内を真空引きした後、前記滅菌槽内１へほぼ大
気圧まで蒸気を導入する操作を所定回数行い、さらに前
記滅菌槽１内へ加圧状態まで蒸気を導入した後、この蒸
気を前記滅菌槽１内から排出して前記滅菌槽１内をほぼ
大気圧まで戻す操作を所定回数行い、前記加圧状態まで
の蒸気導入時に前記収納容器２の外壁面に付着する凝縮
水からの液垂れを抑制すべく、前記真空引きの圧力レベ
ルを設定することを特徴とする蒸気滅菌装置の運転制御
方法。1. A steam sterilizer for performing sterilization in each of an air discharge step , a sterilization step and a drying step,
Semi-closed type storage container having an opening 38 for storing the sterilized object
The container 2 is housed in the sterilization tank 1, and during the air discharging step, the
After evacuating the inside of the sterilization tank 1, the inside of the sterilization tank 1 is almost expanded.
Repeat the operation of introducing steam up to atmospheric pressure a predetermined number of times
After introducing steam into the sterilization tank 1 to a pressurized state,
The air is discharged from the sterilization tank 1 so that the inside of the sterilization tank 1 is almost
Perform the operation to return to atmospheric pressure a predetermined number of times until the above-mentioned pressurized state
Condensation that adheres to the outer wall surface of the storage container 2 when the steam of
In order to suppress the dripping of water, the pressure level of the vacuum
A method for controlling the operation of a steam sterilizer, the method comprising:
−０．３kg／cm 2 Gの圧力まで行うことを特徴とする請求
項１に記載の蒸気滅菌装置の運転制御方法。 2. The vacuum evacuation during the air discharging step is -1 to -1.
-Characterized by performing up to a pressure of 0.3 kg / cm 2 G
Item 3. An operation control method for a steam sterilizer according to Item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09274098A JP3414252B2 (en) | 1998-03-20 | 1998-03-20 | Operation control method of steam sterilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09274098A JP3414252B2 (en) | 1998-03-20 | 1998-03-20 | Operation control method of steam sterilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11267185A JPH11267185A (en) | 1999-10-05 |
| JP3414252B2 true JP3414252B2 (en) | 2003-06-09 |
Family
ID=14062824
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09274098A Expired - Fee Related JP3414252B2 (en) | 1998-03-20 | 1998-03-20 | Operation control method of steam sterilizer |
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| Country | Link |
|---|---|
| JP (1) | JP3414252B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007175529A (en) * | 2007-03-08 | 2007-07-12 | Miura Co Ltd | Sterilizer |
| CA2942018C (en) | 2014-03-11 | 2023-03-07 | Stryker Corporation | Sterilization container with battery powered sensor module for monitoring the environment in the container |
| JP6970906B2 (en) * | 2016-10-21 | 2021-11-24 | 三浦工業株式会社 | Steam sterilizer |
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|---|---|---|---|---|
| JPS55110553A (en) * | 1979-02-15 | 1980-08-26 | American Sterilizer Co | Steam sterilizing method and its device |
| US4309381A (en) * | 1979-11-06 | 1982-01-05 | American Sterilizer Company | Establishing and ascertaining desired air removal in steam sterilization |
| JPS5897362A (en) * | 1981-12-03 | 1983-06-09 | 株式会社千代田製作所 | Steam pasturizer |
| JPS5934257A (en) * | 1982-08-19 | 1984-02-24 | 三洋電機株式会社 | Steam pasturizer |
| JPS5951852A (en) * | 1982-09-17 | 1984-03-26 | 三洋電機株式会社 | Steam pasturizer |
| JPS5957657A (en) * | 1982-09-27 | 1984-04-03 | 三洋電機株式会社 | Steam pasturizer |
| JPS5973930U (en) * | 1982-11-10 | 1984-05-19 | 三洋電機株式会社 | High pressure steam sterilizer |
| JP2571768B2 (en) * | 1986-06-13 | 1997-01-16 | 株式会社 千代田製作所 | Operating method of steam sterilizer |
| US4944919A (en) * | 1987-05-27 | 1990-07-31 | Mdt Corporation | Low temperature sterilizer |
| JPH0431069Y2 (en) * | 1989-07-21 | 1992-07-27 | ||
| JPH0653149B2 (en) * | 1990-01-12 | 1994-07-20 | 進和テック株式会社 | Vacuum low temperature steam heat sterilization method and its sterilizer |
| JP3001928B2 (en) * | 1990-05-25 | 2000-01-24 | 株式会社千代田製作所 | Steam sterilizer and its operation method |
| JP2557138Y2 (en) * | 1991-05-20 | 1997-12-08 | 三浦工業株式会社 | Steam sterilizer |
| JPH0731660A (en) * | 1993-07-22 | 1995-02-03 | Miura Kenkyusho:Kk | Sterilization apparatus |
| JPH07308121A (en) * | 1994-05-18 | 1995-11-28 | Komatsugawa Kakoki Kk | Method for sterilizing solid fermenting material |
-
1998
- 1998-03-20 JP JP09274098A patent/JP3414252B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11267185A (en) | 1999-10-05 |
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