JP5095980B2 - Sterilizer - Google Patents

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JP5095980B2
JP5095980B2 JP2006296775A JP2006296775A JP5095980B2 JP 5095980 B2 JP5095980 B2 JP 5095980B2 JP 2006296775 A JP2006296775 A JP 2006296775A JP 2006296775 A JP2006296775 A JP 2006296775A JP 5095980 B2 JP5095980 B2 JP 5095980B2
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sterilization
gas
sterilizer
sterilized
switching valve
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JP2008113683A (en
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八寿雄 中村
幸広 釜瀬
文男 早矢仕
崇 浦野
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IHI Shibaura Machinery Corp
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Description

本発明は、寝具などの被殺菌処理対象物に、高圧蒸気、またはオゾンガスなどの殺菌ガスを浸透させる殺菌装置に関する。   The present invention relates to a sterilization apparatus that allows high-pressure steam or sterilization gas such as ozone gas to penetrate into an object to be sterilized such as bedding.

従来、介護用・医療機関用の機器、寝具類を滅菌・殺菌する方法において、耐熱性のある被殺菌処理対象物に対しては、ヒーターなどにより水を加熱して蒸気を発生させ、大気圧を超える圧力下で飽和蒸気により滅菌する高圧蒸気滅菌器による方法がある（特許文献１参照）。また、耐熱性のない被殺菌処理対象物には、エチレンオキサイド（ＥＯＧ）ガスを浸透させて滅菌する方法がある。
特開平６−１９００２４号公報 Conventionally, in methods for sterilizing and sterilizing nursing care / medical institutional equipment and bedding, for heat-resistant objects to be sterilized, water is heated by a heater or the like to generate steam, and atmospheric pressure There is a method using a high-pressure steam sterilizer that sterilizes with saturated steam under a pressure exceeding (see Patent Document 1). In addition, there is a method of sterilizing an object to be sterilized without heat resistance by infiltrating ethylene oxide (EOG) gas.
Japanese Patent Laid-Open No. 6-190024

耐熱性のある被殺菌処理対象物は、高圧蒸気滅菌装置で処理し、耐熱性のない被殺菌処理対象物は、ＥＯＧガス殺菌装置にて処理を行っている。このため、二つの殺菌装置を設置し、処理する必要があるため、二台分の設置スペースが必要となっていた。   An object to be sterilized with heat resistance is processed with a high-pressure steam sterilizer, and an object to be sterilized without heat resistance is processed with an EOG gas sterilizer. For this reason, since it is necessary to install and process two sterilizers, the installation space for two units | sets was needed.

そこで、本発明においては、オゾンガスによる殺菌装置において、殺菌庫内に高圧蒸気を導入するようにして、被殺菌処理対象物の耐熱性の有無に応じて、一台の装置において、常温殺菌方法及び高圧蒸気殺菌方法を選択できる装置を提供する。   Therefore, in the present invention, in the sterilization apparatus using ozone gas, high-pressure steam is introduced into the sterilization chamber, and depending on whether the object to be sterilized has heat resistance, An apparatus capable of selecting a high-pressure steam sterilization method is provided.

本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。   The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

請求項１においては、被殺菌処理対象物を内部に収納する殺菌庫（１）と、高圧蒸気生成機構（４）と、殺菌ガス発生装置（５）を具備した殺菌装置において、該高圧蒸気生成機構（４）は、電磁切換弁よりなる切換弁（１８）を介して殺菌庫（１）に連通させ、該殺菌ガス発生装置（５）も、電磁切換弁よりなる切換弁（２０）を介して殺菌庫（１）に連通させ、該殺菌ガスをオゾンガスとし、該殺菌ガス発生装置（５）からのオゾンガスを殺菌庫（１）に導入できる機構と共に、前記殺菌庫（１）の内部に、蒸気を飽和蒸気として導入できる機構とを併設し、耐熱性のない被殺菌処理対象物は、オゾンガスを浸透させて殺菌処理を行い、耐熱性のある被殺菌処理対象物は、高圧蒸気により殺菌処理を行い、前記被殺菌処理対象物の耐熱性の有無に応じて、一台の装置により、オゾンガスによる殺菌、及び高圧蒸気による殺菌の、一方を選択可能とする切り替え機構を構成し、前記殺菌ガス発生装置（５）のオゾンガスの原料ガス生成機であるＰＳＡ式酸素発生装置（２２）にコンプレッサを内蔵し、該コンプレッサからのガスを、前記殺菌庫（１）に直接送る切り替え機構を設置したものである。 According to claim 1, in the sterilization apparatus provided with a sterilization chamber (1) for storing an object to be sterilized, a high-pressure steam generation mechanism (4), and a sterilization gas generator (5), the high-pressure steam generation The mechanism (4) communicates with the sterilizer (1) via a switching valve (18) consisting of an electromagnetic switching valve, and the sterilizing gas generator (5) is also connected via a switching valve (20) consisting of an electromagnetic switching valve. The sterilization chamber (1) is communicated with the sterilization gas as ozone gas, and the ozone gas from the sterilization gas generator (5) can be introduced into the sterilization chamber (1). It is equipped with a mechanism that can introduce steam as saturated steam, and the object to be sterilized without heat resistance is sterilized by infiltrating ozone gas, and the object to be sterilized with heat resistance is sterilized with high-pressure steam. The heat resistance of the object to be sterilized Depending on the presence or absence, the single apparatus, sterilization by ozone gas, and sterilization by high pressure steam, constitutes a switching mechanism which can be selected one at the sterilizing gas generator (5) feed gas generator of ozone gas A compressor is built in a certain PSA type oxygen generator (22), and a switching mechanism for directly sending the gas from the compressor to the sterilizer (1) is installed .

請求項２においては、被殺菌処理対象物を内部に収納する殺菌庫（１）と、高圧蒸気生成機構（４）と、殺菌ガス発生装置（５）を具備した殺菌装置において、該高圧蒸気生成機構（４）は、電磁切換弁よりなる切換弁（１８）を介して殺菌庫（１）に連通させ、該殺菌ガス発生装置（５）も、電磁切換弁よりなる切換弁（２０）を介して殺菌庫（１）に連通させ、該殺菌ガスをオゾンガスとし、該殺菌ガス発生装置（５）からのオゾンガスを殺菌庫（１）に導入できる機構と共に、前記殺菌庫（１）の内部に、蒸気を飽和蒸気として導入できる機構とを併設し、耐熱性のない被殺菌処理対象物は、オゾンガスを浸透させて殺菌処理を行い、耐熱性のある被殺菌処理対象物は、高圧蒸気により殺菌処理を行い、前記被殺菌処理対象物の耐熱性の有無に応じて、一台の装置により、オゾンガスによる殺菌、及び高圧蒸気による殺菌の、一方を選択可能とする切り替え機構を構成し、前記殺菌ガス発生装置（５）のオゾンガスの原料ガス生成機である乾燥空気装置にコンプレッサを内蔵し、該コンプレッサからのガスを、前記殺菌庫（１）に直接送る切り替え機構を設置したものである。 In claim 2, in the sterilization apparatus provided with the sterilization chamber (1) for storing the object to be sterilized therein, the high-pressure steam generation mechanism (4), and the sterilization gas generator (5), the high-pressure steam generation The mechanism (4) communicates with the sterilizer (1) via a switching valve (18) consisting of an electromagnetic switching valve, and the sterilizing gas generator (5) is also connected via a switching valve (20) consisting of an electromagnetic switching valve. The sterilization chamber (1) is communicated with the sterilization gas as ozone gas, and the ozone gas from the sterilization gas generator (5) can be introduced into the sterilization chamber (1). It is equipped with a mechanism that can introduce steam as saturated steam, and the object to be sterilized without heat resistance is sterilized by infiltrating ozone gas, and the object to be sterilized with heat resistance is sterilized with high-pressure steam. The heat resistance of the object to be sterilized Depending on the presence or absence, the single apparatus, sterilization by ozone gas, and sterilization by high pressure steam, constitutes a switching mechanism which can be selected one at the sterilizing gas generator (5) feed gas generator of ozone gas A certain dry air apparatus has a built-in compressor and a switching mechanism for directly sending the gas from the compressor to the sterilizer (1).

本発明の効果として、以下に示すような効果を奏する。   As effects of the present invention, the following effects can be obtained.

請求項１においては、被殺菌処理対象物を内部に収納する殺菌庫（１）と、内部に殺菌ガスが浸透しにくい被殺菌処理対象物に殺菌ガスを浸透させる機構とを有する殺菌装置において、該殺菌ガスをオゾンガスとし、前記殺菌庫（１）の内部に、ヒーターなどにより水を加熱して発生させた蒸気を、大気圧を超える圧力下で飽和蒸気として、高圧蒸気を導入できる機構を併設し、耐熱性のない被殺菌処理対象物は、オゾンガスを浸透させて殺菌処理を行い、耐熱性のある被殺菌処理対象物は、殺菌庫内に高圧蒸気を導入して、高圧蒸気により殺菌処理を行い、前記被殺菌処理対象物の耐熱性の有無に応じて、一台の装置により、オゾンガスによる殺菌、及び高圧蒸気による殺菌の、一方を選択可能とする、切換弁による切換機構を構成したので、オゾンガスによる殺菌装置において、殺菌庫内に高圧蒸気を導入するようにして、被殺菌処理対象物の耐熱性の有無に応じて、一台の装置において、常温殺菌方法及び高圧蒸気殺菌方法を選択できる。そのため、従来の装置と比べ省スペース化が可能となる。   In claim 1, in the sterilizer having the sterilization chamber (1) for storing the object to be sterilized inside, and the mechanism for allowing the sterilization gas to permeate the object to be sterilized which is difficult to infiltrate the sterilization gas inside, The sterilization gas is ozone gas, and a mechanism is provided in the sterilization chamber (1) to introduce high-pressure steam into the steam generated by heating water with a heater or the like as saturated steam under a pressure exceeding atmospheric pressure. The object to be sterilized without heat resistance is sterilized by infiltrating ozone gas, and the object to be sterilized with heat resistance is sterilized with high-pressure steam by introducing high-pressure steam into the sterilization chamber. According to the presence or absence of heat resistance of the object to be sterilized, a switching mechanism using a switching valve is configured to enable selection of one of ozone gas sterilization and high pressure steam sterilization with a single device. of In a sterilization apparatus using ozone gas, high-pressure steam is introduced into the sterilization chamber, and the room-temperature sterilization method and the high-pressure steam sterilization method are selected in one apparatus depending on the heat resistance of the object to be sterilized. it can. Therefore, space can be saved as compared with the conventional apparatus.

また、高圧蒸気殺菌用の蒸気を利用することにより、殺菌ガスの殺菌効果を向上させることができる。   Moreover, the sterilization effect of sterilization gas can be improved by utilizing the steam for high-pressure steam sterilization.

また、常温での殺菌ガスによる殺菌処理方法と併用して、高温高圧蒸気により殺菌庫内を加温すれば、被殺菌処理対象物の殺菌効果を向上させることができる。   Further, when the inside of the sterilization chamber is heated with high-temperature and high-pressure steam in combination with a sterilization treatment method using a sterilization gas at normal temperature, the sterilization effect of the object to be sterilized can be improved.

また、殺菌ガスとして、オゾンを使用する殺菌装置であり、従来の殺菌ガスに比べ、短時間で同様な効果を得ることができ、しかもランニングコストの低減もできる。   Moreover, it is a sterilization apparatus that uses ozone as the sterilization gas, and the same effect can be obtained in a short time as compared with the conventional sterilization gas, and the running cost can be reduced.

また、前記殺菌ガス発生装置（５）のオゾンガスの原料ガス生成機であるＰＳＡ式酸素発生装置（２２）にコンプレッサを内蔵し、該コンプレッサからのガスを、前記殺菌庫（１）に直接送る切り替え機構を設置したので、高圧蒸気殺菌を行った後に、オゾンガス発生に使用する酸素ガス発生装置に用いられているコンプレッサを流用して、被殺菌処理対象物を乾燥させることができる。 Moreover , the PSA type oxygen generator (22) which is a raw material gas generator of ozone gas of the sterilization gas generator (5) incorporates a compressor, and switches the gas from the compressor directly to the sterilizer (1). Since the mechanism is installed, after performing high-pressure steam sterilization, the object to be sterilized can be dried using a compressor used in an oxygen gas generator used for generating ozone gas.

請求項２においては、請求項１記載の効果に加えて、前記殺菌ガス発生装置（５）のオゾンガスの原料ガス生成機である乾燥空気装置にコンプレッサを内蔵し、該コンプレッサからのガスを、前記殺菌庫（１）に直接送る切り替え機構を設置したので、高圧蒸気殺菌を行った後に、オゾンガス発生に使用する乾燥空気ガス発生装置に用いられているコンプレッサを流用して、被殺菌処理対象物を乾燥させることができる。 In claim 2 , in addition to the effect of claim 1, a compressor is built in a dry air device which is a raw gas generator of ozone gas of the sterilization gas generator (5), and the gas from the compressor is Since the switching mechanism that sends directly to the sterilizer (1) is installed, after the high-pressure steam sterilization, the compressor used in the dry air gas generator used for ozone gas generation is diverted to the object to be sterilized. Can be dried.

次に、発明の実施の形態を説明する。   Next, embodiments of the invention will be described.

図１は殺菌装置の高圧蒸気導入による兼用殺菌システムを示す図である。   FIG. 1 is a diagram showing a combined sterilization system using high-pressure steam introduced in a sterilizer.

図２は被殺菌処理対象物の殺菌温度の上昇システムを示す図である。   FIG. 2 is a diagram showing a system for raising the sterilization temperature of an object to be sterilized.

図３は被殺菌処理対象物の乾燥システムを示す図である。   FIG. 3 is a diagram showing a drying system for an object to be sterilized.

図４は被殺菌処理対象物の温度上昇システムを示す図である。   FIG. 4 is a diagram showing a temperature rise system for an object to be sterilized.

本発明の一実施例である殺菌装置の全体構成について、図１を参照して説明する。   The whole structure of the sterilizer which is one Example of this invention is demonstrated with reference to FIG.

図１に示すように、殺菌庫１は殺菌ガス殺菌庫本体であり、該殺菌庫１の両側には、被殺菌処理対象物を内部に設置及び搬出するときに使用する開閉用扉３が設けられている。   As shown in FIG. 1, the sterilizer 1 is a sterilization gas sterilizer main body, and on both sides of the sterilizer 1, opening / closing doors 3 used for installing and carrying out an object to be sterilized are provided. It has been.

高圧蒸気生成機構４は、電磁切換弁よりなる切換弁１８を介して殺菌庫１に接続されている。   The high-pressure steam generating mechanism 4 is connected to the sterilizer 1 via a switching valve 18 made of an electromagnetic switching valve.

また、殺菌ガス発生装置５は、電磁切換弁よりなる切換弁２０を介して、前記切換弁１８から殺菌庫１に至る配管の中途部に接続されて、殺菌庫１に連通されている。１１は希釈用ガス導入口、６は切換弁である。該殺菌庫１の蒸気排水用の排水タンク８が電磁切換弁よりなる切換弁７を介して連通されている。   The sterilizing gas generator 5 is connected to the sterilization chamber 1 through a switching valve 20 made of an electromagnetic switching valve and connected to the middle part of the pipe from the switching valve 18 to the sterilization chamber 1. 11 is a gas introduction port for dilution, and 6 is a switching valve. A drainage tank 8 for steam drainage of the sterilizer 1 is communicated via a switching valve 7 composed of an electromagnetic switching valve.

エアフィルター１０は、電磁切換弁よりなる切換弁２１を介して、殺菌庫１に連通されている。排気装置１５は、逆止弁１３、殺菌ガス無害化装置１２、電磁切換弁よりなる切換弁１７を介して殺菌庫１に接続されると共に、逆止弁１４、電磁切換弁よりなる切換弁９を介しても殺菌庫１に接続されている。排気装置１５としては、真空ポンプなどが挙げられる。   The air filter 10 is communicated with the sterilizer 1 through a switching valve 21 made of an electromagnetic switching valve. The exhaust device 15 is connected to the sterilization chamber 1 through a check valve 13, a sterilizing gas detoxifying device 12, and a switching valve 17 including an electromagnetic switching valve, and a switching valve 9 including a check valve 14 and an electromagnetic switching valve. It is connected to the sterilizer 1 also through. Examples of the exhaust device 15 include a vacuum pump.

また、殺菌庫１には、温度調節器１６が接続されている。前記切換機構となる切換弁( 後述する切換弁も同様) １８・２０・７・１７・９・２１、高圧蒸気生成機構４、殺菌ガス発生装置５、排気装置１５、温度調節器１６は制御回路３０と接続されている。該制御回路３０は中央演算処理装置（ＣＰＵ）や記憶装置（ＲＡＭやＲＯＭ）やインターフェース等からなり、ＲＯＭに後述する制御プログラムが記憶されている。   In addition, a temperature controller 16 is connected to the sterilizer 1. The switching valve serving as the switching mechanism (the same applies to the switching valve described later) 18, 20, 7, 17, 9, 21; 30. The control circuit 30 includes a central processing unit (CPU), a storage device (RAM or ROM), an interface, and the like, and a control program described later is stored in the ROM.

次に、上記構成の作用について説明する。まず、耐熱性の被殺菌処理対象物を処理する場合の制御は、高圧蒸気生成機構４に、図示されていない給水ラインから蒸気生成用の供給水が送られ、高圧蒸気生成機構４内にあるセンサーにより一定量の水が給水される。次に、高圧蒸気生成機構４内に設けられたヒーター等で水を加熱して、蒸気を発生させ、熱電対により温度を検出して前記ヒーターを制御して一定温度を保持し、高圧蒸気生成機構４を蓄圧する。また、被殺菌処理対象物を殺菌庫１に収納して、殺菌庫３を閉め、殺菌庫１を密閉する。高圧蒸気生成機構４に蓄圧された蒸気は、切換弁１８が開くと、殺菌庫１に給蒸されると同時に、切換弁７が開いて殺菌庫１の空気を抜いた後、切換弁１８が閉じて殺菌庫１が加圧され、一定温度に到達して殺菌が開始される。殺菌に必要な時間が経過した後、切換弁１８が閉じると共に切換弁７が開いて排水タンク８へ殺菌庫１の蒸気を排蒸し、殺菌が終了する。   Next, the operation of the above configuration will be described. First, in the case of processing a heat-resistant object to be sterilized, supply water for steam generation is sent to a high-pressure steam generation mechanism 4 from a water supply line (not shown) and is in the high-pressure steam generation mechanism 4. A certain amount of water is supplied by the sensor. Next, water is heated by a heater or the like provided in the high-pressure steam generation mechanism 4 to generate steam, the temperature is detected by a thermocouple, and the heater is controlled to maintain a constant temperature. The mechanism 4 is accumulated. Further, the object to be sterilized is stored in the sterilizer 1, the sterilizer 3 is closed, and the sterilizer 1 is sealed. The steam accumulated in the high-pressure steam generating mechanism 4 is steamed to the sterilizer 1 when the switching valve 18 is opened. At the same time, the switching valve 7 is opened and the air in the sterilizer 1 is evacuated. The sterilizer 1 is closed and pressurized, reaches a certain temperature, and sterilization is started. After the time necessary for sterilization has elapsed, the switching valve 18 is closed and the switching valve 7 is opened, and the steam in the sterilizer 1 is exhausted to the drainage tank 8, and the sterilization ends.

次に、非耐熱性の被殺菌処理対象物を処理する場合の制御は、まず、殺菌庫１に接続されている排気用切換弁９を除く全ての切換弁を閉とし、排気装置１５により殺菌庫１内の雰囲気ガスを排気し、庫内を既定の真空条件とする。次に、殺菌ガス発生装置５において無声放電などの殺菌ガス機構により、殺菌ガスが生成され、切換弁２０を介して殺菌庫１へ送られる。注入された殺菌ガスは、殺菌庫１内が真空状態にあるため、被殺菌処理対象物の内部まで十分にガスが浸透し、すみずみまで殺菌がなされる。次に、殺菌後の残留殺菌ガスは、排気装置１５により、切換弁１７、殺菌ガス無害化装置１２、逆止弁１３を介して排気される。このとき、残留ガスは殺菌ガス無害化装置１２により、安全なガスに変換されて排気ガスとして排出される。次に、上述の殺菌ガス注入工程、排気工程を必要回数繰り返す。この時の排気、注入の回数、注入する殺菌ガス量などは殺菌庫のサイズや必要とされる殺菌効果により設定を行う。また、上述の制御方法の一つとして、殺菌ガス注入後の殺菌庫１内の真空度を大気圧まで戻さず、次の排気工程を行い、設定回数の工程を繰り返すことがある。これによれば、殺菌庫１内に存在する殺菌ガスが外部に漏洩することを抑制することもできる。繰り返しの殺菌工程が終了した後、排気装置１５により、殺菌庫１内を真空状態とし、次にエアフィルター１０、切換弁２１を介して、雰囲気ガスを殺菌庫１内に注入する。これにより、庫内に残留する殺菌ガスを希釈する。次に、殺菌ガス無害化装置１２を介して、希釈した殺菌ガスを安全なガスに処理し、該ガスを排気装置１５により、排気する。これを所定回数繰り返し、殺菌庫１内の残留殺菌ガスをすべて排気する。その後、殺菌庫用扉３を開とし、被殺菌処理対象物を取り出す。また、本制御は、真空工程、殺菌ガス注入工程のみを説明しているが、真空工程と殺菌ガス注入工程の同時運転による処理時間の短縮や、殺菌ガスの注入を一箇所だけでなく複数箇所の注入ノズルから注入するなどさまざまな方法があり、上述の方法に拘泥されるものではない。   Next, in the case of processing a non-heat-resistant object to be sterilized, first, all the switching valves except the exhaust switching valve 9 connected to the sterilization chamber 1 are closed and sterilized by the exhaust device 15. The atmosphere gas in the chamber 1 is exhausted, and the interior of the chamber is set to a predetermined vacuum condition. Next, sterilization gas is generated in the sterilization gas generator 5 by a sterilization gas mechanism such as silent discharge, and is sent to the sterilization chamber 1 through the switching valve 20. Since the injected sterilization gas is in a vacuum state in the sterilization chamber 1, the gas sufficiently penetrates into the object to be sterilized and is sterilized throughout. Next, the sterilized residual sterilizing gas is exhausted by the exhaust device 15 through the switching valve 17, the sterilizing gas detoxifying device 12, and the check valve 13. At this time, the residual gas is converted into a safe gas by the sterilizing gas detoxifying device 12 and discharged as exhaust gas. Next, the sterilizing gas injection process and the exhaust process described above are repeated as many times as necessary. At this time, the exhaust, the number of injections, the amount of sterilization gas to be injected, etc. are set according to the size of the sterilizer and the required sterilization effect. Moreover, as one of the above-described control methods, there is a case where the degree of vacuum in the sterilization chamber 1 after sterilization gas injection is not returned to atmospheric pressure, the next exhaust process is performed, and the set number of processes is repeated. According to this, it can also suppress that the sterilization gas which exists in the sterilizer 1 leaks outside. After the repeated sterilization process is completed, the inside of the sterilizer 1 is evacuated by the exhaust device 15, and then atmospheric gas is injected into the sterilizer 1 through the air filter 10 and the switching valve 21. Thereby, the sterilization gas remaining in the cabinet is diluted. Next, the diluted sterilizing gas is processed into a safe gas via the sterilizing gas detoxifying device 12, and the gas is exhausted by the exhaust device 15. This is repeated a predetermined number of times, and all the residual sterilization gas in the sterilizer 1 is exhausted. Thereafter, the sterilization door 3 is opened, and the object to be sterilized is taken out. In addition, this control only describes the vacuum process and the sterilization gas injection process. However, the processing time is shortened by simultaneous operation of the vacuum process and the sterilization gas injection process, and the sterilization gas injection is performed not only at one place but at multiple places. There are various methods such as injection from an injection nozzle, and the method is not limited to the above method.

このように、被殺菌処理対象物を内部に収納する殺菌庫１と、内部にガスが浸透しにくい被殺菌処理対象物に殺菌ガスを浸透させる機構とを有する殺菌装置において、前記殺菌庫１内部に高圧蒸気を導入できる機構を設けたことにより、殺菌庫１内に高圧蒸気を導入するようにして、被殺菌処理対象物の耐熱性の有無に応じて、一台の装置において、常温殺菌方法及び高圧蒸気殺菌方法を選択できる。そのため、従来の装置と比べ省スペース化が可能となる。   As described above, in the sterilization apparatus having the sterilization chamber 1 for storing the object to be sterilized inside and the mechanism for allowing the sterilization gas to penetrate into the object to be sterilized which gas is difficult to permeate therein, By providing a mechanism capable of introducing high-pressure steam into the sterilization chamber 1, the high-temperature steam is introduced into the sterilization chamber 1, and in accordance with the presence or absence of heat resistance of the object to be sterilized, And a high-pressure steam sterilization method can be selected. Therefore, space can be saved as compared with the conventional apparatus.

次に、実施例２について、図２により説明を行う。本実施例２で示す殺菌装置の全体構成は、実施例１で示した全体構成に一部装置・配管類を追加したものであり、殺菌庫１周囲に蒸気が導入できる蒸気導入空間２、ＰＳＡ式酸素発生装置２２を設けている。該ＰＳＡ式酸素発生装置２２は電磁切換弁よりなる切換弁２３を介して殺菌ガス発生装置（オゾン発生装置）５に接続されている。これらＰＳＡ式酸素発生装置２２、切換弁２３、殺菌ガス発生装置（オゾン発生装置）５は制御回路３０と接続されている。被殺菌処理対象物が非耐熱性の場合の制御に、実施例１で示した殺菌処理を行い、殺菌処理が終了した後、高圧蒸気生成機構４で生成した蒸気を蒸気導入空間２に導入し、殺菌庫１内の温度を上昇させる。これにより、被殺菌処理対象物に付着していた臭気物質が加熱により殺菌庫１内に気体として脱気され、脱臭することができる。庫内温度を一定時間保持した後、排気装置１５により、切換弁９を介して脱気ガスを殺菌庫外へ排出する。次にエアフィルター１０から、切換弁２１を介して、殺菌庫１内に雰囲気ガスを注入し、大気圧まで戻す。必要に応じて、これを必要回数繰り返して、被殺菌処理対象物の脱臭効果をさらに向上させることもできる。上述の方法は、理解しやすくするため、殺菌処理後として説明したが、殺菌工程と並行して、必要な温度まで殺菌庫１内温度を上昇させ、脱臭効果を得ることもできる。また、一般的に殺菌効果は、温度が高いほど向上することが知られている。そのため、記述するまでもないが、温度を上昇させると殺菌効果の向上を図ることができ、殺菌に必要な殺菌ガスの量を減少させたり、処理時間を短縮するなどの効果も期待できる。なお、図２では殺菌ガスとして、オゾンガスを使用する場合を図示している。殺菌ガスの原料ガスとなるＰＳＡ式酸素発生装置２２により、周辺雰囲気ガスが、酸素ガスに変換される。生成された酸素ガスは、殺菌ガス発生装置の一例であるオゾン発生装置５において無声放電などの機構により、オゾンガスとなり、切換弁２０を介して殺菌庫１へ送られる。これ以降の殺菌工程は、図１で示す実施例１と同様の工程を繰り返すことにより必要な殺菌効果を得ることができる。また、細菌の消毒はオゾンにより目的を達成することができるが、ノミ、ダニなどについては、オゾン単独ではこれらを殺すことはできない。そのような場合においても、本発明によれば、これらの害虫駆除に必要な温度まで、殺菌庫１を上昇させ、害虫駆除をすることも可能となる。なお、本実施例では殺菌用ガスとしてオゾンガスを使用しているが、例えば安定化二酸化塩素等の他の殺菌用ガスを用いてもかまわない。   Next, Example 2 will be described with reference to FIG. The overall configuration of the sterilizer shown in the second embodiment is obtained by adding some devices and piping to the overall configuration shown in the first embodiment, and a steam introduction space 2 and a PSA in which steam can be introduced around the sterilizer 1. An oxygen generator 22 is provided. The PSA oxygen generator 22 is connected to a sterilization gas generator (ozone generator) 5 via a switching valve 23 made of an electromagnetic switching valve. The PSA oxygen generator 22, the switching valve 23, and the sterilizing gas generator (ozone generator) 5 are connected to the control circuit 30. For the control when the object to be sterilized is non-heat resistant, the sterilization process shown in Example 1 is performed, and after the sterilization process is completed, the steam generated by the high-pressure steam generation mechanism 4 is introduced into the steam introduction space 2. The temperature in the sterilizer 1 is increased. Thereby, the odorous substance adhering to the to-be-sterilized object can be deaerated as a gas in the sterilization chamber 1 by heating and deodorized. After keeping the inside temperature for a certain period of time, the exhaust device 15 exhausts the degassed gas outside the sterilization compartment via the switching valve 9. Next, atmospheric gas is injected into the sterilizer 1 from the air filter 10 via the switching valve 21 and returned to atmospheric pressure. If necessary, this can be repeated as many times as necessary to further improve the deodorizing effect of the object to be sterilized. In order to make it easy to understand, the above-described method has been described as after the sterilization treatment. However, in parallel with the sterilization process, the temperature in the sterilization chamber 1 can be increased to a necessary temperature to obtain a deodorizing effect. Further, it is generally known that the sterilizing effect is improved as the temperature is higher. Therefore, it goes without saying that if the temperature is raised, the sterilization effect can be improved, and the effect of reducing the amount of sterilization gas necessary for sterilization and shortening the processing time can be expected. Note that FIG. 2 shows a case where ozone gas is used as the sterilizing gas. The ambient atmosphere gas is converted into oxygen gas by the PSA oxygen generator 22 which is a raw material gas for the sterilization gas. The generated oxygen gas becomes ozone gas by a mechanism such as silent discharge in the ozone generator 5 which is an example of the sterilization gas generator, and is sent to the sterilizer 1 through the switching valve 20. In the subsequent sterilization process, the necessary sterilization effect can be obtained by repeating the same process as in Example 1 shown in FIG. The purpose of disinfection of bacteria can be achieved by ozone, but fleas, ticks, etc. cannot be killed by ozone alone. Even in such a case, according to the present invention, it is possible to raise the sterilization chamber 1 to a temperature necessary for extermination of these pests and to carry out pest control. In this embodiment, ozone gas is used as the sterilizing gas, but other sterilizing gases such as stabilized chlorine dioxide may be used.

このように、殺菌庫１周囲に蒸気が導入できる空間である蒸気導入空間２を形成したので、高圧蒸気殺菌用の蒸気を流用することにより、殺菌ガスの殺菌効果を向上させることができる。また、殺菌庫１内部を加温する機構を設けたことにより、常温での殺菌ガスによる殺菌処理方法と併用して、殺菌庫内を加温することにより、被殺菌処理対象物の殺菌効果や害虫駆除効果を向上させることができる。また、殺菌ガスとして、オゾンガスを使用する殺菌装置であり、従来の殺菌ガスに比べ、短時間で同様な効果を得ることができ、しかもランニングコストの低減もできる。また、殺菌ガスとして、オゾンガスの替わりに安定化二酸化塩素を使用しても同様の効果を得られる。   Thus, since the steam introduction space 2 that is a space where steam can be introduced is formed around the sterilization chamber 1, the sterilization effect of the sterilization gas can be improved by diverting the steam for high-pressure steam sterilization. In addition, by providing a mechanism for heating the inside of the sterilization chamber 1, in combination with a sterilization method using a sterilization gas at room temperature, by heating the inside of the sterilization chamber, The pest control effect can be improved. Moreover, it is a sterilization apparatus using ozone gas as the sterilization gas, and the same effect can be obtained in a short time as compared with the conventional sterilization gas, and the running cost can be reduced. The same effect can be obtained even when stabilized chlorine dioxide is used as the sterilizing gas instead of ozone gas.

次に、実施例３について、図３を用いて説明を行う。本実施例３で示す殺菌装置の全体構成は、実施例２で示した全体構成に一部装置・配管類を追加したものであり、ＰＳＡ式酸素発生装置２２内のコンプレッサからの配管が、電磁切換弁よりなる切換弁２４を介して、前記切換弁１８から殺菌庫１に至る配管の中途部に接続されて、殺菌庫１に連通されている。該切換弁２４は制御回路３０と接続されている。耐熱性のある被殺菌処理対象物を殺菌する場合、上述の通り、高圧蒸気の殺菌を実施することにより殺菌が完了する。殺菌終了後の殺菌庫１の中は、蒸気処理を行った後であるため、多量の水分が残存し、被殺菌処理対象物は濡れた状態にある。そこで、ＰＳＡ式酸素発生装置２２が備える図示していないコンプレッサから発生する高圧のガスを切換弁２４を介して、殺菌庫１の中に供給する。それにより、コンプレッサからの簡易除湿されたガスにより、殺菌庫１内部の被殺菌処理対象物に付着していた水滴が殺菌庫１下部に落とされ、徐々に水分を除去することができる。さらに、切換弁２４を閉じ、切換弁２０を開とし、ＰＳＡ式酸素発生装置２２を運転し、その酸素ガスを殺菌庫１内に供給することにより、完全な除湿を行うことが可能となる。このときエアフィルター１０から、切換弁２１を介して、同時に周囲雰囲気ガスを導入することにより、処理時間を短縮することも一法である。また、図３で示したように本実施例３は、ＰＳＡ式酸素発生装置２２を使用した場合を説明したが、乾燥空気発生装置を使用した場合も、該装置内にコンプレッサが内蔵されており、該コンプレッサを使用することにより、同様の効果が得られる。   Next, Example 3 will be described with reference to FIG. The overall configuration of the sterilization apparatus shown in the third embodiment is obtained by adding some devices and piping to the entire configuration shown in the second embodiment, and the piping from the compressor in the PSA oxygen generator 22 is electromagnetic. It is connected to the middle part of the piping from the switching valve 18 to the sterilizer 1 through the switching valve 24 composed of a switching valve, and communicates with the sterilizer 1. The switching valve 24 is connected to the control circuit 30. When sterilizing an object to be sterilized having heat resistance, sterilization is completed by sterilizing high-pressure steam as described above. Since the inside of the sterilizer 1 after the sterilization is after the steam treatment, a large amount of moisture remains and the object to be sterilized is in a wet state. Therefore, high-pressure gas generated from a compressor (not shown) provided in the PSA oxygen generator 22 is supplied into the sterilizer 1 through the switching valve 24. Thereby, the water droplets adhering to the object to be sterilized inside the sterilization chamber 1 are dropped to the lower part of the sterilization chamber 1 by the simply dehumidified gas from the compressor, and moisture can be gradually removed. Further, by closing the switching valve 24 and opening the switching valve 20, operating the PSA oxygen generator 22 and supplying the oxygen gas into the sterilizer 1, complete dehumidification can be performed. At this time, it is also possible to shorten the processing time by simultaneously introducing the ambient atmosphere gas from the air filter 10 through the switching valve 21. In addition, as shown in FIG. 3, in the third embodiment, the case where the PSA type oxygen generator 22 is used has been described. However, when the dry air generator is used, a compressor is built in the apparatus. The same effect can be obtained by using the compressor.

このように、前記殺菌ガスがオゾンガスである殺菌装置において、該オゾンガスの原料ガス生成機であるＰＳＡ式酸素発生装置２２内蔵のコンプレッサからのガスを殺菌庫に送る切り替え機構を設置したことにより、高圧蒸気殺菌を行った後に、オゾンガス発生に使用する酸素ガス発生装置に用いられているコンプレッサを流用して、被殺菌処理対象物を乾燥させることができる。また、前記殺菌ガスがオゾンガスである殺菌装置において、該オゾンガスの原料ガス生成機である乾燥空気装置内蔵のコンプレッサからのガスを殺菌庫に送る切り替え機構を設置した場合においても、高圧蒸気殺菌を行った後に、オゾンガス発生に使用する乾燥空気ガス発生装置に用いられているコンプレッサを流用して、被殺菌処理対象物を乾燥させることができる。   Thus, in the sterilization apparatus in which the sterilization gas is ozone gas, a switching mechanism for sending gas from the compressor built in the PSA oxygen generator 22 which is a raw material gas generator of the ozone gas to the sterilization chamber is installed. After performing the steam sterilization, the object to be sterilized can be dried by diverting the compressor used in the oxygen gas generator used for generating ozone gas. Further, in the sterilization apparatus in which the sterilization gas is ozone gas, high-pressure steam sterilization is performed even when a switching mechanism for sending gas from a compressor built in a dry air apparatus that is a raw material gas generator of the ozone gas to a sterilizer is installed. Thereafter, the object to be sterilized can be dried using a compressor used in a dry air gas generator used for generating ozone gas.

次に、構成例１について、図４を用いて説明を行う。本構成例１で示す殺菌装置の全体構成は、実施例２で示した全体構成に一部装置・配管類を追加したものであり、ＰＳＡ式酸素発生装置２２は、電磁切換弁よりなる切換弁２５を介して殺菌庫１に接続されており、前記ＰＳＡ式酸素発生装置２２から切換弁２５に至る配管の中途部から配管が分岐し、電磁弁よりなる切換弁２６を介して蒸気導入空間２に接続されている。耐熱性の無い被殺菌処理対象物を、殺菌ガスとしてオゾンを使用して殺菌を行う場合、上述の通りの工程を踏み殺菌を実現することができる。殺菌処理を行っているときに、並行して、ＰＳＡ式酸素発生装置２２の冷却ファン（図示せず）により冷却した後の温かいガスを切換弁２６を開として、殺菌庫１の周囲空間２にガスを導入し、殺菌庫１を昇温させて、殺菌効果を向上させることができる。また、上述の通り、被殺菌処理対象物を昇温させると、付着した臭気を脱気させることができ、消臭効果も期待できる。また、切換弁２５を開として、オゾンガスと共に、冷却ファンからの温風を内部に直接供給することによっても同様な効果を実現できる。この場合、特に冷却ファンからのガスにフィルタなどを設けずとも、殺菌庫１内は、殺菌ガスとしてオゾンが存在しており、もし冷却ファンからの菌の混入があったとしても、効果を妨げることはない。ただし、より殺菌効果を高めたい場合は、冷却ファンからのガスラインにフィルタを設けることになる。上述の方法は、殺菌工程においての説明であったが、残留ガスの排気工程や全ての殺菌工程が終了した後に、昇温を行ってもよく、その処理タイミングなどに特に拘泥されるものではない。   Next, Configuration Example 1 will be described with reference to FIG. The overall configuration of the sterilization apparatus shown in Configuration Example 1 is obtained by adding some devices and piping to the overall configuration shown in Example 2, and the PSA type oxygen generator 22 is a switching valve composed of an electromagnetic switching valve. 25 is connected to the sterilizer 1 through the pipe, the pipe branches from the middle of the pipe from the PSA type oxygen generator 22 to the switching valve 25, and the steam introduction space 2 through the switching valve 26 made of an electromagnetic valve. It is connected to the. When an object to be sterilized that does not have heat resistance is sterilized using ozone as a sterilizing gas, sterilization can be realized by performing the steps described above. In parallel with the sterilization treatment, the warm gas after being cooled by the cooling fan (not shown) of the PSA oxygen generator 22 is opened in the surrounding space 2 of the sterilizer 1 by opening the switching valve 26. A sterilization effect can be improved by introducing gas and raising the temperature of the sterilizer 1. Further, as described above, when the temperature of the object to be sterilized is raised, the attached odor can be degassed, and a deodorizing effect can be expected. Further, the same effect can be realized by opening the switching valve 25 and directly supplying warm air from the cooling fan together with ozone gas. In this case, ozone is present as the sterilizing gas in the sterilizing chamber 1 without providing a filter or the like for the gas from the cooling fan, and the effect is hindered even if bacteria are mixed from the cooling fan. There is nothing. However, when it is desired to further enhance the sterilizing effect, a filter is provided in the gas line from the cooling fan. Although the above-described method has been described in the sterilization process, the temperature may be increased after the exhaust process of residual gas and all the sterilization processes are completed, and the process timing is not particularly limited. .

このように、被殺菌処理対象物を内部に収納する殺菌庫１と、内部にガスが浸透しにくい被殺菌処理対象物に殺菌ガスを浸透させる機構とを有するオゾンガスを用いた殺菌装置において、前記オゾンガスの原料ガス生成機であるＰＳＡ式酸素発生装置冷却用ファンからのガスを殺菌庫１に送る切り替え機構を設置したことにより、常温での殺菌ガスによる殺菌処理法と併用して、ＰＳＡ式酸素発生装置２２の冷却用ファンからのガスにより、殺菌庫１内を昇温させて被殺菌処理対象物の殺菌効果を向上させることができる。また、被殺菌処理対象物を内部に収納する殺菌庫１と、内部にガスが浸透しにくい被殺菌処理対象物に殺菌ガスを浸透させる機構を有するオゾンガスを用いた殺菌装置において、前記オゾンガスの原料ガス生成機である乾燥空気装置冷却用ファンからのガスを殺菌庫１に送る切り替え機構を設置した場合においても、上記と同様の効果が得られる。   Thus, in the sterilization apparatus using ozone gas having the sterilization chamber 1 for storing the object to be sterilized inside, and the mechanism for allowing the sterilization gas to penetrate into the object to be sterilized which is difficult for gas to penetrate inside, By installing a switching mechanism that sends the gas from the cooling fan of the PSA oxygen generator, which is a raw material gas generator for ozone gas, to the sterilizer 1, the PSA oxygen is used in combination with the sterilization treatment method using sterilization gas at room temperature. The gas from the cooling fan of the generator 22 can raise the temperature in the sterilizer 1 to improve the sterilization effect of the object to be sterilized. Moreover, in the sterilization apparatus using ozone gas which has the mechanism which permeate | transmits sterilization gas in the sterilization chamber 1 which accommodates the to-be-sterilized processing object inside, and the to-be-sterilized processing target object into which gas does not osmose | permeate easily, Even when a switching mechanism for sending the gas from the drying air device cooling fan, which is a gas generator, to the sterilizer 1 is installed, the same effect as described above can be obtained.

殺菌装置の高圧蒸気導入による兼用殺菌システムを示す図。The figure which shows the combined sterilization system by the high pressure steam introduction | transduction of a sterilizer. 被殺菌処理対象物の殺菌温度の上昇システムを示す図。The figure which shows the raise system of the sterilization temperature of the to-be-sterilized process target object. 被殺菌処理対象物の乾燥システムを示す図。The figure which shows the drying system of the to-be-sterilized process target object. 被殺菌処理対象物の温度上昇システムを示す図。The figure which shows the temperature rise system of the to-be-sterilized process target object.

１ 殺菌庫
２ 蒸気導入空間
４ 高圧蒸気生成機構
５ 殺菌ガス発生装置
２２ ＰＳＡ式酸素発生装置 DESCRIPTION OF SYMBOLS 1 Sterilization chamber 2 Steam introduction space 4 High-pressure steam generation mechanism 5 Sterilization gas generator 22 PSA type oxygen generator

Claims (2)

被殺菌処理対象物を内部に収納する殺菌庫（１）と、高圧蒸気生成機構（４）と、殺菌ガス発生装置（５）を具備した殺菌装置において、該高圧蒸気生成機構（４）は、電磁切換弁よりなる切換弁（１８）を介して殺菌庫（１）に連通させ、該殺菌ガス発生装置（５）も、電磁切換弁よりなる切換弁（２０）を介して殺菌庫（１）に連通させ、該殺菌ガスをオゾンガスとし、該殺菌ガス発生装置（５）からのオゾンガスを殺菌庫（１）に導入できる機構と共に、前記殺菌庫（１）の内部に、蒸気を飽和蒸気として導入できる機構とを併設し、耐熱性のない被殺菌処理対象物は、オゾンガスを浸透させて殺菌処理を行い、耐熱性のある被殺菌処理対象物は、高圧蒸気により殺菌処理を行い、前記被殺菌処理対象物の耐熱性の有無に応じて、一台の装置により、オゾンガスによる殺菌、及び高圧蒸気による殺菌の、一方を選択可能とする切り替え機構を構成し、前記殺菌ガス発生装置（５）のオゾンガスの原料ガス生成機であるＰＳＡ式酸素発生装置（２２）にコンプレッサを内蔵し、該コンプレッサからのガスを、前記殺菌庫（１）に直接送る切り替え機構を設置したことを特徴とする殺菌装置。 In the sterilizer equipped with the sterilization chamber (1) for storing the object to be sterilized inside, the high-pressure steam generating mechanism (4), and the sterilizing gas generator (5), the high-pressure steam generating mechanism (4) The sterilizer (1) is communicated with a sterilizer (1) through a switching valve (18) made of an electromagnetic switching valve, and the sterilizing gas generator (5) is also connected with the sterilizer (1) through a switching valve (20) made of an electromagnetic switch valve. The sterilization gas is used as ozone gas, and the ozone gas from the sterilization gas generator (5) can be introduced into the sterilizer (1), and the steam is introduced into the sterilizer (1) as saturated steam. The object to be sterilized without heat resistance is infiltrated with ozone gas and sterilized, and the object to be sterilized with heat resistance is sterilized with high-pressure steam. One unit depending on the heat resistance of the object to be treated The device, sterilization with ozone gas, and sterilization by high pressure steam, constitutes a switching mechanism which can be selected one, the a raw material gas generator of ozone sterilization gas generator (5) PSA-type oxygen generator (22 A sterilizer comprising a compressor built in and a switching mechanism for directly sending the gas from the compressor to the sterilizer (1) . 被殺菌処理対象物を内部に収納する殺菌庫（１）と、高圧蒸気生成機構（４）と、殺菌ガス発生装置（５）を具備した殺菌装置において、該高圧蒸気生成機構（４）は、電磁切換弁よりなる切換弁（１８）を介して殺菌庫（１）に連通させ、該殺菌ガス発生装置（５）も、電磁切換弁よりなる切換弁（２０）を介して殺菌庫（１）に連通させ、該殺菌ガスをオゾンガスとし、該殺菌ガス発生装置（５）からのオゾンガスを殺菌庫（１）に導入できる機構と共に、前記殺菌庫（１）の内部に、蒸気を飽和蒸気として導入できる機構とを併設し、耐熱性のない被殺菌処理対象物は、オゾンガスを浸透させて殺菌処理を行い、耐熱性のある被殺菌処理対象物は、高圧蒸気により殺菌処理を行い、前記被殺菌処理対象物の耐熱性の有無に応じて、一台の装置により、オゾンガスによる殺菌、及び高圧蒸気による殺菌の、一方を選択可能とする切り替え機構を構成し、前記殺菌ガス発生装置（５）のオゾンガスの原料ガス生成機である乾燥空気装置にコンプレッサを内蔵し、該コンプレッサからのガスを、前記殺菌庫（１）に直接送る切り替え機構を設置したことを特徴とする殺菌装置。 In the sterilizer equipped with the sterilization chamber (1) for storing the object to be sterilized inside, the high-pressure steam generating mechanism (4), and the sterilizing gas generator (5), the high-pressure steam generating mechanism (4) The sterilizer (1) is communicated with a sterilizer (1) through a switching valve (18) made of an electromagnetic switching valve, and the sterilizing gas generator (5) is also connected with the sterilizer (1) through a switching valve (20) made of an electromagnetic switch valve. The sterilization gas is used as ozone gas, and the ozone gas from the sterilization gas generator (5) can be introduced into the sterilizer (1), and the steam is introduced into the sterilizer (1) as saturated steam. The object to be sterilized without heat resistance is infiltrated with ozone gas and sterilized, and the object to be sterilized with heat resistance is sterilized with high-pressure steam. One unit depending on the heat resistance of the object to be treated Built by the device, sterilization with ozone gas, and sterilization by high pressure steam, constitutes a switching mechanism which can be selected one, the compressor dry air apparatus as a source gas generator of ozone gas of the sterilizing gas generator (5) And the sterilizer which installed the switching mechanism which sends the gas from this compressor directly to the said sterilizer (1).
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