JP2005087353A - Sterilizing steam generator - Google Patents

Sterilizing steam generator Download PDF

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JP2005087353A
JP2005087353A JP2003322544A JP2003322544A JP2005087353A JP 2005087353 A JP2005087353 A JP 2005087353A JP 2003322544 A JP2003322544 A JP 2003322544A JP 2003322544 A JP2003322544 A JP 2003322544A JP 2005087353 A JP2005087353 A JP 2005087353A
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evaporation chamber
conical surface
steam generator
sterilization
supply means
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JP4380276B2 (en
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Hiroshi Meigan
弘 明翫
Makoto Takeuchi
誠 竹内
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Shibuya Corp
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Shibuya Kogyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sterilizing steam generator capable of surely vaporizing sterilizing liquid and feeding sterilizing steam of uniform concentration. <P>SOLUTION: An evaporation chamber 2 formed inside a housing 3 is formed with a conical surface 11b contracted downward, a cylindrical surface 11a positioned in the upper part of the conical surface is formed with an inlet 13A guiding gas from an air sending means 5 along the cylindrical surface 11a, a lid part 12 is vertically provided with an exhaust pipe 14, and an exhaust port 14A in its tip is projected to an intermediate position of the conical surface 11b of the evaporation chamber 2. A liquid feed means 4 drops aqueous hydrogen peroxide on the conical surface heated by a heating means 5 to vaporize it, and the hydrogen peroxide vapor is mixed with the gas guided from the inlet, passes to a lower end 11c while circulatively moving, becomes an ascending air current from the lower end and enters into the exhaust port. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は滅菌蒸気発生装置に関し、詳しくは滅菌液体を蒸発室内で蒸発させ、この滅菌蒸気を蒸発室に送気された気体とともに外部へと排気する滅菌蒸気発生装置に関する。   The present invention relates to a sterilization steam generator, and more particularly to a sterilization steam generator that evaporates a sterilizing liquid in an evaporation chamber and exhausts the sterilization steam to the outside together with the gas sent to the evaporation chamber.

従来、例えば医薬品の分野では外部雰囲気から隔離されて内部の滅菌されたアイソレータ内で、バイアル、アンプル、シリンジへの薬品の充填・密閉を行なっており、アイソレータ内部の滅菌には滅菌蒸気が使用されている。また同様に無菌環境下で内容物が充填される容器類の滅菌にも滅菌蒸気が使用されている。
そしてこの滅菌蒸気を供給する滅菌蒸気発生装置として、ハウジング内に形成された蒸発室内に滅菌液体を供給する液体供給手段と、導入口を介して蒸発室内に気体を送気する送気手段とを備え、液体供給手段によって供給された滅菌液体を蒸発室内で蒸発させ、この滅菌蒸気を送気手段からの気体とともに排出口より排出させて供給する滅菌蒸気発生装置が知られている。
またこのような滅菌蒸気発生装置として、円筒状の蒸発室の下部に導入口及び上部に排出口を設け、さらに当該導入口から排出口にかけてらせん状のガイドレールの設けられた滅菌蒸気発生装置が知られている。（特許文献１）
当該特許文献１の滅菌蒸気発生装置では、導入口より加熱された気体を導入し、この気体を上記ガイドレールに沿って周回運動をさせながら排出口より排出させ、この加熱された気体に滅菌液体を噴霧することで、滅菌液体を蒸発させて滅菌蒸気を得るようになっている。
また他の滅菌蒸気発生装置として、蒸発室内に加熱装置を設けた滅菌蒸気発生装置が知られており、（特許文献２）この滅菌蒸気発生装置ではこの加熱装置に液体供給手段が滅菌液体を滴下することにより滅菌蒸気を得るようになっている。
特公平５−２４０１７号公報 特公平５−６６１４２号公報 Conventionally, in the field of pharmaceuticals, for example, vials, ampoules, and syringes are filled and sealed with chemicals in sterilized isolators isolated from the outside atmosphere and sterilized steam is used for sterilization inside the isolator. ing. Similarly, sterilization steam is used for sterilization of containers filled with contents in an aseptic environment.
As a sterilization steam generator for supplying this sterilization steam, a liquid supply means for supplying a sterilizing liquid into an evaporation chamber formed in the housing, and an air supply means for supplying a gas into the evaporation chamber through an inlet. There is known a sterilization vapor generating apparatus that is provided and evaporates a sterilizing liquid supplied by a liquid supply means in an evaporation chamber, and discharges the sterilized vapor together with a gas from an air supply means through a discharge port.
Further, as such a sterilization steam generator, there is provided a sterilization steam generator provided with an introduction port at the lower part of the cylindrical evaporation chamber and a discharge port at the upper part, and further provided with a spiral guide rail from the introduction port to the discharge port. Are known. (Patent Document 1)
In the sterilization steam generator of Patent Document 1, a heated gas is introduced from the inlet, and the gas is discharged from the outlet while rotating around the guide rail. The sterilized liquid is supplied to the heated gas. By spraying, the sterilizing liquid is evaporated to obtain sterilized vapor.
As another sterilizing steam generator, a sterilizing steam generating apparatus provided with a heating device in an evaporation chamber is known. (Patent Document 2) In this sterilizing steam generating device, a liquid supply means drops sterilizing liquid onto the heating device. By doing so, sterilization steam is obtained.
Japanese Patent Publication No. 5-24017 Japanese Patent Publication No. 5-66142

しかしながら、上記特許文献１の滅菌蒸気発生装置の場合、加熱された気体によって滅菌液体を蒸発させているため熱効率が悪く、送気手段から供給する気体の温度を高くしないと、滅菌液体が完全に蒸発しないまま排出口より排出されてしまうという問題が生じる。
また特許文献２の滅菌蒸気発生装置の場合、加熱手段によって滅菌液体を蒸発させているが、蒸発室に供給される気体と滅菌蒸気とを充分に攪拌することができず、滅菌蒸気の濃度が不均一なままで排出されるという問題が生じる。
このような問題に鑑み、本発明は滅菌液体を確実に蒸発させるとともに、滅菌蒸気の濃度を均一にして供給することの可能な滅菌蒸気発生装置を提供するものである。 However, in the case of the sterilization steam generator of Patent Document 1, the sterilization liquid is evaporated by the heated gas, so that the thermal efficiency is poor. If the temperature of the gas supplied from the air supply means is not increased, the sterilization liquid is completely There arises a problem that the gas is discharged from the discharge port without being evaporated.
Further, in the case of the sterilization steam generator of Patent Document 2, the sterilization liquid is evaporated by the heating means, but the gas supplied to the evaporation chamber and the sterilization steam cannot be sufficiently stirred, and the concentration of the sterilization steam is low. There arises a problem of being discharged in a non-uniform manner.
In view of such a problem, the present invention provides a sterilization steam generator capable of reliably evaporating a sterilizing liquid and supplying a uniform concentration of sterilization steam.

すなわち、本発明における滅菌蒸気発生装置は、ハウジング内に形成された蒸発室内に滅菌液体を供給する液体供給手段と、導入口を介して蒸発室に気体を送気する送気手段とを備え、液体供給手段によって供給された滅菌液体を蒸発室内で蒸発させ、この蒸気を送気手段からの気体とともに排出口より蒸発室の外部に排気する滅菌蒸気発生装置において、
上記蒸発室を両端が端面によって閉塞された円筒状に形成するとともに、円筒状の内周面に接線方向から気体を送気するように導入ロを設け、また何れか一方の端面の中央部に外部と連通する排出筒を蒸発室内に突出させて設け、当該排出筒の蒸発室に突出した先端部を排出口とし、さらにハウジングに蒸発室を加熱する加熱手段を備えたことを特徴としている。 That is, the sterilization vapor generation apparatus in the present invention includes a liquid supply means for supplying a sterilizing liquid into an evaporation chamber formed in the housing, and an air supply means for supplying gas to the evaporation chamber through an inlet. In the sterilization vapor generator for evaporating the sterilizing liquid supplied by the liquid supply means in the evaporation chamber and exhausting this vapor together with the gas from the air supply means to the outside of the evaporation chamber from the discharge port,
The evaporation chamber is formed in a cylindrical shape whose both ends are closed by end faces, and an introduction pipe is provided on the cylindrical inner peripheral face so as to feed gas from the tangential direction, and at the center of one of the end faces. A discharge cylinder communicating with the outside is provided so as to protrude into the evaporation chamber, a tip portion protruding into the evaporation chamber of the discharge cylinder is used as a discharge port, and a heating means for heating the evaporation chamber is provided in the housing.

本発明によれば、蒸発室内に供給された滅菌液体は加熱手段によって加熱された蒸発室で蒸発するので、滅菌液体を確実に蒸発させることができ、また導入口より導入された気体は円筒状の内周面に沿って周回運動をしながら排出口を介して排出筒より外部へと流れるので、濃度が均一化された滅菌蒸気を供給することができる。   According to the present invention, since the sterilizing liquid supplied into the evaporation chamber evaporates in the evaporation chamber heated by the heating means, the sterilizing liquid can be surely evaporated, and the gas introduced from the inlet is cylindrical. Since the gas flows from the discharge tube to the outside through the discharge port while rotating around the inner peripheral surface, sterilized steam having a uniform concentration can be supplied.

以下図示実施例について説明すると、図１、図２は本発明にかかる滅菌蒸気発生装置１を示し、特に図１は図２におけるＩ−Ｉ部の断面を示したものとなっていて、図示しないアイソレータや容器の滅菌装置、滅菌庫に滅菌媒体となる滅菌蒸気としての過酸化水素蒸気を供給する装置となっている。
この滅菌蒸気発生装置１は、その内部に蒸発室２を形成する円筒状のハウジング３と、上記蒸発室２に滅菌液体としての過酸化水素水溶液を供給する液体供給手段４と、ハウジング３に設けられた導入筒１３を介して蒸発室２に気体を送気する送気手段５と、ハウジング３の外周面を囲繞して上記蒸発室２を加熱する加熱手段６とによって構成されている。
そして液体供給手段４が供給した過酸化水素水溶液は加熱手段６によって加熱された蒸発室２で蒸発し、この蒸発した過酸化水素蒸気は送気手段５によって導入された気体と混合され、気体とともに蒸発室２から排出されるようになっている。 1 and 2 show a sterilization steam generator 1 according to the present invention, and particularly FIG. 1 shows a cross section taken along line II in FIG. 2 and is not shown. It is a device for supplying hydrogen peroxide vapor as sterilization vapor as a sterilization medium to an isolator, a container sterilization device, and a sterilization cabinet.
The sterilization steam generator 1 is provided in a cylindrical housing 3 that forms an evaporation chamber 2 therein, a liquid supply means 4 that supplies an aqueous hydrogen peroxide solution as a sterilizing liquid to the evaporation chamber 2, and the housing 3. The air supply means 5 supplies gas to the evaporation chamber 2 through the introduced cylinder 13 and the heating means 6 surrounds the outer peripheral surface of the housing 3 and heats the evaporation chamber 2.
The aqueous hydrogen peroxide solution supplied by the liquid supply means 4 evaporates in the evaporation chamber 2 heated by the heating means 6, and this evaporated hydrogen peroxide vapor is mixed with the gas introduced by the air supply means 5, together with the gas. It is discharged from the evaporation chamber 2.

上記ハウジング３は過酸化水素によって腐蝕せず、また熱伝導性の良いアルミ製となっており、有底円筒状に形成され下部が閉塞された本体部１１と、当該本体部１１の上部開口を閉塞する蓋部１２とから構成され、本体部１１の中心軸が鉛直方向を向くように設置されている。
そしてハウジング３内の上記蒸発室２は、本体部１１の内部に形成された円筒状の内周面として、上下部とも径の等しい円筒面１１ａと、円筒面１１ａの下方側に形成された下方に向けて縮径する円錐面１１ｂとを有しており、さらにこの円錐面１１ｂの下端を塞ぐ下端面１１ｃと、円筒面１１ａの上端を塞ぐ上端面１２ａとにより区画されている。
また本体部１１には導入筒１３が設けられていて、円筒面１１ａに開口した導入口１３Ａを介して送気手段５からの気体が蒸発室２内に送気されるようになっている。この導入筒１３は図１のように水平方向に設けられるとともに、図２のように円筒面１１ａの中心に対して偏心した位置に設けられている。
そして導入口１３Ａは図２に示すように上記送気手段５からの気体を円筒面１１ａの接線方向にむけて蒸発室２に導入するようになっている。
さらに蓋部１２にはその中央部を貫通させて円筒状の排出筒１４が設けられ、当該排出筒１４は図１に示すように垂直方向に設けられるとともに、その下端は蒸発室２内を上記導入口１３Ａの位置を越えて下方へ突出され、円錐面１１ｂのおよそ中間位置まで達している。
そしてその先端開口を排出口１４Ａとし、反対側を蒸発室２の外部に突出させ、図示しない配管を介してアイソレータ、滅菌装置など、滅菌蒸気を使用する空間や装置と連通させている。
そして本体部１１における上記下端面１１ｃの下方には温度センサ１５が挿入され、蒸発室２の温度を測定するようになっている。 The housing 3 is made of aluminum which is not corroded by hydrogen peroxide and has good thermal conductivity, and has a main body portion 11 formed in a bottomed cylindrical shape and closed at the bottom, and an upper opening of the main body portion 11. It is comprised from the cover part 12 which obstruct | occludes, and is installed so that the center axis | shaft of the main-body part 11 may face a perpendicular direction.
The evaporation chamber 2 in the housing 3 has a cylindrical inner peripheral surface formed inside the main body 11 and a cylindrical surface 11a having the same diameter in the upper and lower parts and a lower part formed on the lower side of the cylindrical surface 11a. A conical surface 11b whose diameter decreases toward the top, and is further divided by a lower end surface 11c that closes the lower end of the conical surface 11b and an upper end surface 12a that closes the upper end of the cylindrical surface 11a.
The main body 11 is provided with an introduction cylinder 13 so that the gas from the air supply means 5 is supplied into the evaporation chamber 2 through an introduction port 13A opened in the cylindrical surface 11a. The introduction cylinder 13 is provided in the horizontal direction as shown in FIG. 1 and at a position eccentric with respect to the center of the cylindrical surface 11a as shown in FIG.
As shown in FIG. 2, the inlet 13A introduces the gas from the air feeding means 5 into the evaporation chamber 2 toward the tangential direction of the cylindrical surface 11a.
Further, the lid 12 is provided with a cylindrical discharge cylinder 14 penetrating through the center thereof, and the discharge cylinder 14 is provided in the vertical direction as shown in FIG. It protrudes downward beyond the position of the inlet 13A and reaches approximately the middle position of the conical surface 11b.
The opening at the tip is used as a discharge port 14A, and the opposite side protrudes to the outside of the evaporation chamber 2 and communicates with a space or device using sterilization steam, such as an isolator or a sterilization device, through a pipe not shown.
A temperature sensor 15 is inserted below the lower end surface 11 c of the main body 11 to measure the temperature of the evaporation chamber 2.

次に、本実施例における液体供給手段４は３５％濃度の過酸化水素水溶液を蒸発室２に供給し、上記蓋部１２を貫通して設けられた滴下ノズル４ａによって過酸化水素水溶液を直径約１〜３ｍｍの液滴にして蒸発室２内に滴下するようになっている。
なお、本実施例では、上記過酸化水素水溶液を滅菌液体、その蒸気化された状態を滅菌蒸気としているが、これに限らず、他の滅菌、殺菌作用を有する液体を対象に蒸気化できることは言うまでもなく、本発明における滅菌液体、滅菌蒸気の表現は、広義には殺菌液体、殺菌蒸気を含むものである。
そして上記滴下ノズル４ａは図２に示すように上記導入口１３Ａに対して円周方向へ１８０°程度位置をずらした反対側に合計で３ヶ所に設けられ、またこの滴下ノズル４ａは過酸化水素水溶液が上記円錐面１１ｂに滴下されるよう、円錐面１１ｂの上方に位置している。
このように、本実施例では上記特許文献１のように過酸化水素水溶液を噴霧していないため、滅菌液体を噴霧するために必要なチャンバや気体圧縮手段などの設備が不要であり、また滅菌液体の使用量が少なく、噴霧に使用するノズルが目詰まるといった問題が生じることもない。 Next, the liquid supply means 4 in this embodiment supplies a 35% strength aqueous hydrogen peroxide solution to the evaporation chamber 2, and the hydrogen peroxide aqueous solution is reduced in diameter by a dropping nozzle 4a provided through the lid portion 12. The liquid droplets are dropped into the evaporation chamber 2 as 1 to 3 mm droplets.
In this embodiment, the aqueous hydrogen peroxide solution is a sterilizing liquid, and the vaporized state is a sterilizing vapor. However, the present invention is not limited to this, and other liquids having sterilization and sterilizing actions can be vaporized. Needless to say, the expression of sterilizing liquid and sterilizing steam in the present invention includes sterilizing liquid and sterilizing steam in a broad sense.
As shown in FIG. 2, the dripping nozzle 4a is provided at a total of three locations on the opposite side of the introduction port 13A which is displaced by about 180 ° in the circumferential direction. It is located above the conical surface 11b so that the aqueous solution is dropped onto the conical surface 11b.
As described above, in this embodiment, the hydrogen peroxide aqueous solution is not sprayed as in the above-mentioned Patent Document 1, so that facilities such as a chamber and a gas compressing means necessary for spraying the sterilizing liquid are unnecessary, and sterilization is performed. There is no problem that the amount of liquid used is small and the nozzle used for spraying is clogged.

つぎに、送気手段５は滅菌された乾燥エアを所定温度にまで加熱する図示しない加熱機構を備えており、蒸発室２に１００℃に加熱された気体を一定の流量で送気するようになっている。
また、加熱手段６は上記円錐面１１ｂの位置に合わせて本体部１１の外周を囲繞して設けたバンドヒータであり、このバンドヒータによってハウジング３を加熱することで、本体部１１の熱伝導によって蒸発室２の円錐面１１ｂを１２０℃まで加熱するようになっている。
本実施例で使用する３５％濃度の過酸化水素水溶液は１０８℃で完全に蒸発する事が知られており、滴下された過酸化水素水溶液は、円錐面１１ａに付着すると直ちに蒸発して蒸気化され、加熱された気体流によって再び液化することを防止されて蒸発室２から送り出される。 Next, the air supply means 5 is provided with a heating mechanism (not shown) for heating the sterilized dry air to a predetermined temperature so that the gas heated to 100 ° C. is supplied to the evaporation chamber 2 at a constant flow rate. It has become.
The heating means 6 is a band heater provided so as to surround the outer periphery of the main body portion 11 in accordance with the position of the conical surface 11b. By heating the housing 3 with this band heater, the heat conduction of the main body portion 11 is achieved. The conical surface 11b of the evaporation chamber 2 is heated to 120 ° C.
The 35% aqueous hydrogen peroxide solution used in this example is known to evaporate completely at 108 ° C., and the dropped hydrogen peroxide aqueous solution evaporates immediately after adhering to the conical surface 11a. Then, it is prevented from being liquefied again by the heated gas flow and sent out from the evaporation chamber 2.

このような構成により、本実施例における滅菌蒸気発生装置１は以下のように過酸化水素蒸気を供給するようになっている。
最初に、送気手段５で加熱され送気された乾燥エアは、導入筒１３を介して導入口１３Ａより蒸発室２内へ吹き込まれる。この際、導入口１３Ａは円筒面１１ａの接線方向に気体を導入するよう設けられており、排出筒１４は導入口１３Ａを開口させた位置よりも下方まで突出させているので、導入された乾燥エアの気流は、円筒面１１ａと排出筒１４の外周面の間に形成された通路を旋回し、次第に螺旋を描くように下方へ流れる。
円筒面１１ａの下方側には、下方へ向けて縮径する円錐面１１ｂが連続して形成されており、螺旋状に旋回する気流は渦巻き状にその旋回径を縮小されながら下方へ流れ、排出筒１４の突出した先端部を過ぎると、気体自体が加熱されているとともに加熱手段６により蒸発室２も加熱されていることから、鉛直方向へ配置した排出筒１４の内部を上方に向けて上昇気流が生じて、渦の中央部が排出口１４Ａから排出筒１４を通って蒸発室２の外部へ吹き出されるようになる。 With such a configuration, the sterilization steam generator 1 in this embodiment supplies hydrogen peroxide steam as follows.
First, the dry air heated and supplied by the air supply means 5 is blown into the evaporation chamber 2 through the introduction tube 13 through the introduction port 13A. At this time, the introduction port 13A is provided so as to introduce gas in the tangential direction of the cylindrical surface 11a, and the discharge cylinder 14 protrudes downward from the position where the introduction port 13A is opened. The air flow swirls in a passage formed between the cylindrical surface 11a and the outer peripheral surface of the discharge cylinder 14, and gradually flows downward so as to draw a spiral.
On the lower side of the cylindrical surface 11a, a conical surface 11b whose diameter is reduced downward is continuously formed, and the spirally swirling airflow flows downward while the swirling diameter is reduced and discharged. After passing through the protruding tip of the cylinder 14, the gas itself is heated and the evaporation chamber 2 is also heated by the heating means 6, so that the inside of the discharge cylinder 14 arranged in the vertical direction rises upward. An air flow is generated, and the central part of the vortex is blown out of the evaporation chamber 2 from the discharge port 14 </ b> A through the discharge tube 14.

次に、このような気流状態において、各滴下ノズル４ａから液体供給手段４より送液される過酸化水素水溶液が滴下されると、すでに必要な温度まで加熱されている円錐面１１ｂに付着することで瞬時に蒸発され蒸気化される。
蒸発して生じた過酸化水素蒸気は、乾燥エアの気流に乗って旋回され、周回運動するが、比較的大きな粒子は旋回されることで生じる遠心力により外周側に飛ばされるので、粒子の細かなものから上昇気流に乗って排出口１４Ａから排出筒１４を上方へ送られ蒸発室２から排出される。
外周側へ飛ばされた大きな粒子は、円錐面１１ｂに衝突することで再度蒸発され、細かな粒子となって蒸発室２から排出される。このようにして過酸化水素蒸気を発生させて送り出すことができるので、滴下ノズル４ａから過酸化水素水溶液を順次滴下させることで、過酸化水素水蒸気を攪拌して均一に混合させた滅菌蒸気を、粒子の大きさを均一化して連続的に供給することが可能となる。
そして本体部１１の下方に挿入されている温度センサ１５により、蒸発室２の温度を測定し、このときの温度が所定温度以下の場合には、過酸化水素水溶液が完全に蒸発していないものと判断できる。 Next, in such an air flow state, when the hydrogen peroxide solution fed from the liquid supply means 4 is dropped from each dropping nozzle 4a, it adheres to the conical surface 11b that has already been heated to the required temperature. It is instantly evaporated and vaporized.
The hydrogen peroxide vapor generated by evaporation is swirled in a dry air stream and circulates, but relatively large particles are blown to the outer periphery due to the centrifugal force generated by swirling. The exhaust tube 14 is sent upward from the exhaust port 14 </ b> A and is discharged from the evaporation chamber 2 through an ascending current.
The large particles that have been blown to the outer peripheral side are evaporated again by colliding with the conical surface 11b, and are discharged from the evaporation chamber 2 as fine particles. Since the hydrogen peroxide vapor can be generated and sent out in this way, the sterilized vapor in which the hydrogen peroxide water vapor is stirred and uniformly mixed by sequentially dropping the hydrogen peroxide aqueous solution from the dropping nozzle 4a. It becomes possible to supply the particles uniformly with a uniform size.
Then, the temperature of the evaporation chamber 2 is measured by a temperature sensor 15 inserted below the main body 11, and when the temperature at this time is equal to or lower than a predetermined temperature, the aqueous hydrogen peroxide solution is not completely evaporated. It can be judged.

以上のようにして排出された過酸化水素蒸気は、均一に混合されるとともに粒子が細かくされているので、配管内を移動する間に再び液化されにくくなっている。
これに対し、特許文献１の滅菌蒸気発生装置では、気体の熱で過酸化水素水溶液を蒸発させているので熱効率が低く、大量の過酸化水素水溶液が蒸発室２に噴霧されると、蒸発しない過酸化水素水溶液が排出されたり、蒸発してもその粒子が不ぞろいとなって、排出口から移動する間に再び液化してしまうおそれがある。
また、特許文献２の滅菌蒸気発生装置では、過酸化水素水溶液は過熱手段によって蒸発するので熱効率は良いが、蒸発室内の気体の流れによって充分に過酸化酸素蒸気の粒子が細かくされておらず、これも排出口から移動する間に再び液化してしまうおそれがある。 Since the hydrogen peroxide vapor discharged as described above is mixed uniformly and the particles are made fine, it is difficult to be liquefied again while moving in the pipe.
On the other hand, in the sterilization steam generator of Patent Document 1, since the aqueous hydrogen peroxide solution is evaporated by the heat of the gas, the thermal efficiency is low, and when a large amount of aqueous hydrogen peroxide solution is sprayed on the evaporation chamber 2, it does not evaporate. Even if the aqueous hydrogen peroxide solution is discharged or evaporated, the particles become uneven and may be liquefied again while moving from the discharge port.
Moreover, in the sterilization steam generator of Patent Document 2, the aqueous hydrogen peroxide solution is evaporated by the superheating means, so that the thermal efficiency is good, but the oxygen peroxide vapor particles are not sufficiently made fine by the gas flow in the evaporation chamber, There is also a risk that it will be liquefied again while moving from the outlet.

本実施例における滅菌蒸気発生装置の断面図。Sectional drawing of the sterilization vapor | steam generator in a present Example. 滅菌蒸気発生装置の平面図。The top view of a sterilization steam generator.

符号の説明Explanation of symbols

１ 滅菌蒸気発生装置 ２ 蒸発室
３ ハウジング ４ 液体供給手段
４ａ 滴下ノズル ５ 送気手段
６ 加熱手段 １１ａ 円筒面
１１ｂ 円錐面 １３ 導入筒
１３Ａ 導入口 １４ 排出筒
１４Ａ 排出口 DESCRIPTION OF SYMBOLS 1 Sterilization vapor | steam generator 2 Evaporation chamber 3 Housing 4 Liquid supply means 4a Dropping nozzle 5 Air supply means 6 Heating means 11a Cylindrical surface 11b Conical surface 13 Introduction cylinder 13A Introduction port 14 Discharge cylinder 14A Discharge port

Claims (3)

ハウジング内に形成された蒸発室内に滅菌液体を供給する液体供給手段と、導入口を介して蒸発室に気体を送気する送気手段とを備え、液体供給手段によって供給された滅菌液体を蒸発室内で蒸発させ、この蒸気を送気手段からの気体とともに排出口より蒸発室の外部に排気する滅菌蒸気発生装置において、
上記蒸発室を両端が端面によって閉塞された円筒状に形成するとともに、円筒状の内周面に接線方向から気体を送気するように導入ロを設け、また何れか一方の端面の中央部に外部と連通する排出筒を蒸発室内に突出させて設け、当該排出筒の蒸発室に突出した先端部を排出口とし、さらにハウジングに蒸発室を加熱する加熱手段を備えたことを特徴とする滅菌蒸気発生装置。 A liquid supply means for supplying a sterilizing liquid into an evaporation chamber formed in the housing and an air supply means for supplying a gas to the evaporation chamber through an inlet, and evaporating the sterilizing liquid supplied by the liquid supply means In a sterilization steam generator that evaporates indoors and exhausts this steam together with the gas from the air supply means to the outside of the evaporation chamber through the discharge port,
The evaporation chamber is formed in a cylindrical shape whose both ends are closed by end faces, and an introduction pipe is provided on the cylindrical inner peripheral face so as to feed gas from the tangential direction, and at the center of one of the end faces. A sterilization characterized in that a discharge cylinder communicating with the outside is provided to protrude into the evaporation chamber, a tip portion protruding into the evaporation chamber of the discharge cylinder is used as a discharge port, and a heating means for heating the evaporation chamber is provided in the housing. Steam generator. 上記排出筒は導入ロを越えて蒸発室内に突出していることを特徴とする請求項１に記載の滅菌蒸気発生装置。   2. The sterilization steam generator according to claim 1, wherein the discharge cylinder protrudes into the evaporation chamber beyond the introduction port. 上記蒸発室は、排出筒を設けた端面が上方となるように設置されるとともに、円筒状の内周面は下方に向けて縮径する円錐面を有しており、上記液体供給手段が上方の端面より円錐面に滅菌液体を滴下し、加熱手段が円錐面を加熱することにより、滅菌液体を円錐面にて蒸発させることを特徴とする請求項１または請求項２のいずれかに記載の滅菌蒸気発生装置。   The evaporation chamber is installed so that the end surface provided with the discharge cylinder is upward, the cylindrical inner peripheral surface has a conical surface whose diameter is reduced downward, and the liquid supply means is The sterilizing liquid is dripped onto the conical surface from the end surface of the liquid crystal and the heating means heats the conical surface, whereby the sterilizing liquid is evaporated at the conical surface. Sterilization steam generator.
JP2003322544A 2003-09-16 2003-09-16 Sterilization steam generator Expired - Fee Related JP4380276B2 (en)

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JP2007007422A (en) * 2005-06-30 2007-01-18 Ethicon Inc Sterilization system and vaporizer therefor
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JP2007014392A (en) * 2005-07-05 2007-01-25 Ngk Insulators Ltd Cartridge for sterilization and sterilization method using it
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CN102802679A (en) * 2009-12-23 2012-11-28 金属塑料有限责任公司 Flash vapor generator and assembly comprising a flash vapor generator
KR101633272B1 (en) * 2015-12-07 2016-06-24 주식회사 위그린 vaporizing chamber for air sterilizing device
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JPWO2018190317A1 (en) * 2017-04-10 2020-02-27 サラヤ株式会社 Sterilization method and sterilizer
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US11890388B2 (en) 2017-04-10 2024-02-06 Saraya Co., Ltd. Sterilization method and sterilization device
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CN114288450A (en) * 2021-12-14 2022-04-08 深圳市永恒丰智能设备有限公司 Evaporative atomizer for sterilizing germs
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