JP4997260B2 - High pressure steam sterilizer - Google Patents

High pressure steam sterilizer Download PDF

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JP4997260B2
JP4997260B2 JP2009059402A JP2009059402A JP4997260B2 JP 4997260 B2 JP4997260 B2 JP 4997260B2 JP 2009059402 A JP2009059402 A JP 2009059402A JP 2009059402 A JP2009059402 A JP 2009059402A JP 4997260 B2 JP4997260 B2 JP 4997260B2
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chamber
base
packing
lid
opening
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JP2010207517A (en
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浩 秦
祐嗣 加藤
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ヒルソン・デック株式会社
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Description

本発明は、例えば医療用器具などを滅菌するために用いる高圧蒸気滅菌器に関する。
詳しくは、チャンバーの開口部と蓋体とをパッキンによって密封する高圧蒸気滅菌器に関する。 The present invention relates to a high-pressure steam sterilizer used for sterilizing, for example, medical instruments.
Specifically, the present invention relates to a high-pressure steam sterilizer that seals an opening of a chamber and a lid by packing.

従来、この種の高圧蒸気滅菌器として、蓋の内側外周縁部に沿って円周状の凹部を設け、この凹部にパッキンを挿着し、蓋が閉じた際にパッキンをチャンバの開口縁と当接させ、圧接させてチャンバを密閉しているものがある（例えば、特許文献１参照）。   Conventionally, as this type of high-pressure steam sterilizer, a circumferential concave portion is provided along the inner peripheral edge of the lid, and a packing is inserted into the concave portion, and when the lid is closed, the packing is used as an opening edge of the chamber. Some chambers are sealed by contact and pressure contact (see, for example, Patent Document 1).

特開平９−３８１７８号公報（第２頁、図１）Japanese Patent Laid-Open No. 9-38178 (second page, FIG. 1)

特許文献１のパッキンは、蓋の凹部に挿着される基部と、この基部からチャンバーの開口縁へ向け突出する可動部とを備え、これら基部と可動部が空間部を挟むように断面Ｖ型に形成され、蓋の開閉に伴い可動部を弾性変形させることで密閉状態を保っている。
また、高圧蒸気滅菌器の他の例として、真空ポンプ等を搭載し、チャンバー内の空気を真空脱気して排除することにより、チャンバー内外の圧力差を利用して、チャンバーの開口縁と蓋体とがパッキンを介して密封されるようにしたものがある。 The packing of Patent Document 1 includes a base portion that is inserted into the concave portion of the lid, and a movable portion that protrudes from the base portion toward the opening edge of the chamber, and has a V-shaped cross section so that the base portion and the movable portion sandwich the space portion. The airtight state is maintained by elastically deforming the movable part as the lid is opened and closed.
As another example of a high-pressure steam sterilizer, a vacuum pump or the like is mounted, and the air in the chamber is vacuum degassed to eliminate the pressure difference between the inside and outside of the chamber. There is one in which the body is sealed through a packing.

しかし乍ら、このようなチャンバーの開口縁と蓋体との間にＶ型のパッキンが配備される高圧蒸気滅菌器においてチャンバー内の空気を真空脱気して排除する場合には、チャンバー内が陰圧になることによって蓋とチャンバーの開口縁が互いに引き寄せられるため、これらパッキンの基部と可動部との間に位置する空間部が押し潰され、基部と可動部の対向面同士が吸着してしまう。
その後に滅菌工程が進んでチャンバー内が陰圧から陽圧に変化しても、パッキンの基部と可動部との間に位置する空間部は陰圧状態から解放されずに、基部と可動部の対向面同士が吸着した状態のままになってしまう。
そのため、パッキンの可動部がチャンバーの開口縁から離れてシール性を失い、チャンバー内の圧力が漏れてしまうという問題があった。 However, in a high-pressure steam sterilizer in which a V-shaped packing is provided between the opening edge of the chamber and the lid, when the air in the chamber is removed by vacuum degassing, Because the negative pressure causes the opening edge of the lid and the chamber to be attracted to each other, the space located between the base of the packing and the movable part is crushed, and the opposing surfaces of the base and the movable part are adsorbed to each other. End up.
After that, even if the sterilization process progresses and the inside of the chamber changes from negative pressure to positive pressure, the space located between the base of the packing and the movable part is not released from the negative pressure state, and the base and the movable part The opposing surfaces remain adsorbed.
Therefore, there has been a problem that the movable part of the packing is separated from the opening edge of the chamber and loses its sealing performance, and the pressure in the chamber leaks.

本発明は、このような問題に対処することを課題とするものである。
すなわち、本発明は、真空脱気時のパッキンの吸着による不具合を解消するとともに、パッキンによるシール性を向上させること、パッキンの交換時期を長くして寿命を向上させること、維持コストを低減すること、などを目的とするものである。 An object of the present invention is to deal with such a problem.
That is, the present invention eliminates the problems caused by the adsorption of the packing during vacuum degassing, improves the sealing performance by the packing, extends the life of the packing by extending the replacement time of the packing, and reduces the maintenance cost. , And so on.

このような目的を達成するために本発明は、被滅菌物が収容され空気排除してから蒸気を導入して滅菌処理が行われるチャンバーと、このチャンバーの開口部に対して開閉自在に設けられる蓋と、これらチャンバーの開口部の周縁又は蓋のいずれか一方に設けられて両者間を密閉するパッキンと、前記チャンバー内の空気を真空脱気して前記チャンバー外へ排除する減圧手段とを備え、前記パッキンは、前記チャンバーの開口部又は前記蓋のいずれか一方に形成した取付部に取り付けられる基部と、この基部から他方のシール面へ向けて空間部を挟むように突出する弾性変形可能な可動部を有し、前記取付部には、前記チャンバーの内部から前記基部の背後へ向けて連通する通気路を形成し、前記基部には、該通気路から前記空間部へ向けて連通するとともに、前記減圧手段の作動で前記チャンバー内の空気が外に排除された時に、前記チャンバー内に導入された蒸気の一部を前記通気路から前記空間部へ向け流す貫通孔を開穿したことを特徴とする。 In order to achieve such an object, the present invention is provided with a chamber in which an object to be sterilized is stored and air is exhausted and then sterilization is performed by introducing steam, and an openable and closable opening with respect to the opening of the chamber. A lid, a packing provided at either one of the peripheral edge of the opening of the chamber or the lid and sealing between the two, and a decompression means for vacuuming out the air in the chamber and removing it out of the chamber The packing is elastically deformable so as to protrude from the base portion toward the other sealing surface with a base portion attached to an attachment portion formed on either the opening of the chamber or the lid. The mounting portion has an air passage that communicates from the inside of the chamber toward the back of the base portion, and the base portion has an air passage from the air passage toward the space portion. While passing, when the air in the chamber in operation of the pressure reducing means is eliminated to the outside, perforated in the through hole to flow toward a portion of the vapor introduced into the chamber from the air passage into the space It is characterized by that.

また、被滅菌物が収容され空気排除してから蒸気を導入して滅菌処理が行われるチャンバーと、このチャンバーの開口部に対して開閉自在に設けられる蓋と、これらチャンバーの開口部の周縁又は蓋のいずれか一方に設けられて両者間を密閉するパッキンとを備え、前記パッキンは、前記チャンバーの開口部又は前記蓋のいずれか一方に形成した取付部に取り付けられる基部と、この基部から他方のシール面へ向けて空間部を挟むように突出する弾性変形可能な可動部を有し、前記取付部には、前記チャンバーの内部から前記基部の背後へ向けて連通する通気路を形成し、前記基部には、該通気路から前記空間部へ向けて連通する貫通孔を開穿し、前記パッキンの前記基部及び前記可動部がリング状に形成され、前記取付部には、前記基部が嵌入する環状凹部を形成し、この環状凹部の底面には、それと連続するように前記通気路を形成するとともに、前記貫通孔と対向するように環状溝を全周に亘って形成したことを特徴とする。 In addition , a chamber in which an object to be sterilized is accommodated and air is exhausted and then sterilization is performed by introducing steam, a lid that is openable and closable with respect to the opening of the chamber, and the periphery of the opening of these chambers or A packing provided on either one of the lids and sealing between the two, wherein the packing includes a base attached to an opening formed in one of the opening of the chamber or the lid, and the other from the base An elastically deformable movable part projecting so as to sandwich the space part toward the sealing surface of, and the attachment part is formed with a ventilation path communicating from the inside of the chamber toward the back of the base part, the base, and perforated in the through-hole communicating toward the space from the vent path, the base portion and the movable portion of the packing is formed in a ring shape, the mounting portion, the base portion An annular recess is formed, and on the bottom surface of the annular recess, the air passage is formed continuously with the annular recess, and an annular groove is formed over the entire circumference so as to face the through hole. And

前述した特徴を有する本発明は、パッキンが、チャンバーの開口部又は蓋のいずれか一方に形成した取付部に取り付けられる基部と、この基部から他方のシール面へ向けて空間部を挟むように突出する弾性変形可能な可動部を有し、取付部にチャンバーの内部から基部の背後へ向けて連通する通気路を形成し、基部に該通気路から空間部へ向けて連通する貫通孔を開穿することにより、チャンバー内の空気排除に伴い基部と可動部の対向面同士が密着しても、その後の滅菌工程でチャンバー内に蒸気が導入されることで、その蒸気の一部が通気路及び貫通孔を通って空間部へ向け流れ込み、該空間部の陰圧状態が開放されて、パッキンの可動部が形状復元しシール面へ向け離隔して密着する。
前述した特徴を有する本発明は、真空脱気時のパッキンの吸着による不具合を解消できるとともに、パッキンによるシール性を向上させることができる。
その結果、チャンバー内の圧力漏れを防止できる。
また、パッキンの経時変化に関係なく密閉度を向上させることができる。
その結果、パッキンの交換時期を長くして寿命を向上させることができるとともに、維持コストを低減することもできる。 In the present invention having the above-described features, the packing protrudes so as to sandwich the space portion from the base portion toward the other sealing surface, and a base portion attached to the attachment portion formed in either the opening portion or the lid of the chamber. A ventilating passage that communicates from the inside of the chamber toward the back of the base portion, and a through hole that communicates from the vent passage toward the space portion is opened in the mounting portion. As a result, even if the opposing surfaces of the base and the movable part are brought into close contact with the air in the chamber, steam is introduced into the chamber in the subsequent sterilization process, so that a part of the steam can be It flows into the space through the through hole, the negative pressure state of the space is released, and the movable part of the packing is restored in shape and closely contacts the seal surface.
The present invention having the above-described features can solve the problems caused by the adsorption of the packing during vacuum degassing and can improve the sealing performance by the packing.
As a result, pressure leakage in the chamber can be prevented.
Further, the degree of sealing can be improved regardless of the change with time of the packing.
As a result, the replacement time of the packing can be lengthened to improve the life, and the maintenance cost can be reduced.

また、パッキンの基部及び可動部がリング状に形成され、取付部には、該基部が嵌入する環状凹部を形成し、この環状凹部の底面には、それと連続するように通気路を形成するとともに、貫通孔と対向するように環状溝を全周に亘って形成した場合には、取付部の環状凹部にパッキンの基部を嵌入した時に、その貫通孔が周方向のどこに配置されても、環状溝を介して通気路と連通する。
したがって、取付部へのパッキンの組立時に貫通孔の位置合わせを不要にすることができる。
その結果、組立作業が容易で、その分だけ製造コストの低減化が図れる。 In addition, the base portion and the movable portion of the packing are formed in a ring shape, the mounting portion is formed with an annular recess into which the base portion is fitted, and a ventilation path is formed on the bottom surface of the annular recess so as to be continuous therewith. When the annular groove is formed over the entire circumference so as to face the through hole, the annular hole can be placed anywhere in the circumferential direction when the base portion of the packing is inserted into the annular recess of the mounting portion. It communicates with the air passage through the groove.
Therefore, it is possible to eliminate the need for alignment of the through holes when assembling the packing to the mounting portion.
As a result, the assembly work is easy, and the manufacturing cost can be reduced accordingly.

本発明の実施形態に係る高圧蒸気滅菌器の全体構成を示す説明図（蓋を開けた状態の外観斜視図と部分拡大縦断側面図）である。BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing (the external appearance perspective view of the state which opened the cover, and the partially expanded vertical side view) which shows the whole structure of the high pressure steam sterilizer which concerns on embodiment of this invention. 蓋の閉動状態を示す説明図（一部切欠拡大縦断側面図）である。It is explanatory drawing (partially notched expansion vertical side view) which shows the closed movement state of a lid | cover. パッキンの取り外し状態を示す説明図（蓋の正面図）である。It is explanatory drawing (front view of a lid | cover) which shows the removal state of packing.

以下、本発明の実施形態を図面に基づいて説明する。
本発明の実施形態に係る高圧蒸気滅菌器Ａは、図１に示すように、被滅菌物を収納するチャンバー１と、このチャンバー１の開口部１ａに対し開閉自在に設けられる蓋２と、これら対向するチャンバー１の開口部１ａの周縁か又は蓋２のいずれか一方に設けられて両者間を密閉するパッキン３とを備え、チャンバー１の内部１ｂに水を溜め、この水をヒーター１ｃで加熱することにより、チャンバー１内に収納された被滅菌物を高圧蒸気にて滅菌するものである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a high-pressure steam sterilizer A according to an embodiment of the present invention includes a chamber 1 that houses an object to be sterilized, a lid 2 that can be opened and closed with respect to an opening 1 a of the chamber 1, A packing 3 is provided on either the peripheral edge of the opening 1a of the opposing chamber 1 or the lid 2 to seal between the two. Water is stored in the interior 1b of the chamber 1, and this water is heated by the heater 1c. Thus, the object to be sterilized stored in the chamber 1 is sterilized with high-pressure steam.

また、高圧蒸気滅菌器Ａには、例えば真空ポンプ等の減圧手段（図示しない）が、チャンバー１と連通するように搭載される。
この減圧手段は、被滅菌物の滅菌前に作動開始し、チャンバー１内の空気を真空脱気してチャンバー１外へ排除することにより、その後に行われる被滅菌物の滅菌工程で、蒸気がチャンバー１内に行き渡り、被滅菌物の隅々まで浸透して充分な加熱が行えるようにしている。 In the high-pressure steam sterilizer A, for example, a decompression means (not shown) such as a vacuum pump is mounted so as to communicate with the chamber 1.
This decompression means starts operating before sterilization of an object to be sterilized, and the air in the chamber 1 is evacuated to the outside of the chamber 1 so that steam is discharged in the subsequent sterilization process of the object to be sterilized. It reaches the inside of the chamber 1 and penetrates every corner of the object to be sterilized so that it can be heated sufficiently.

パッキン３は、図２に示すように、チャンバー１の開口部１ａの周縁か又は蓋２のいずれか一方に取り付けられる基部３ａと、この基部３ａからチャンバー１の開口部１ａの周縁又は蓋２の他方へ向けて突出する可動部３ｂを有し、これら基部３ａ及び可動部３ｂの全体を、例えばゴムなどの弾性変形可能な材料で、断面Ｖ型或いは略Ｕ型に成形している。
パッキン３の基部３ａには、後述する取付部４の通気路４ａと連通する貫通孔３ｃを開穿している。
基部３ａと可動部３ｂの間には、空間部Ｓを形成している。 As shown in FIG. 2, the packing 3 includes a base 3a attached to either the peripheral edge of the opening 1a of the chamber 1 or the lid 2, and the peripheral edge of the opening 1a of the chamber 1 or the lid 2 of the base 3a. The movable portion 3b protrudes toward the other side, and the entire base portion 3a and the movable portion 3b are formed into a cross-sectional V shape or a substantially U shape with an elastically deformable material such as rubber.
The base 3a of the packing 3 has a through hole 3c that communicates with an air passage 4a of the mounting portion 4 described later.
A space portion S is formed between the base portion 3a and the movable portion 3b.

チャンバー１の開口部１ａの周縁か又は蓋２のいずれか一方には、パッキン３の基部３ａを取り付けるための取付部４が形成され、この取付部４には、チャンバー１の内部１ｂからパッキン３の基部３ａの背後へ向けて連通する通気路４ａを形成している。   An attachment portion 4 for attaching the base portion 3a of the packing 3 is formed on either the peripheral edge of the opening portion 1a of the chamber 1 or the lid 2, and the attachment portion 4 includes the packing 3 from the inside 1b of the chamber 1. An air passage 4a that communicates toward the back of the base portion 3a is formed.

通気路４ａは、パッキン３の基部３ａに開穿された貫通孔３ｃを通して、チャンバー１の内部１ｂと基部３ａ及び可動部３ｂの間の空間部Ｓとを連通させ、チャンバー１の内部１ｂから流入した空気や高圧蒸気が、該貫通孔３ｃを介して空間部Ｓへ向け流出するようにしている。   The air passage 4a allows the interior 1b of the chamber 1 to communicate with the space S between the base 3a and the movable portion 3b through the through hole 3c opened in the base 3a of the packing 3, and flows in from the interior 1b of the chamber 1. The air or high-pressure steam that has been discharged flows out toward the space S through the through hole 3c.

図１に示した例では、高圧蒸気滅菌器Ａが、チャンバー１が設けられる滅菌器本体Ｂと、この滅菌器本体Ｂの正面に対して開閉自在に設けられる扉Ｃからなり、この扉Ｃの内側に円板状の蓋２を配置し、この蓋２の表面に取付部４が凹設され、この取付部４内に、パッキン３の基部３ａを着脱自在に嵌着することで、その可動部３ｂをチャンバー１の開口部１ａの周縁に形成されるシール面５に接触させている。   In the example shown in FIG. 1, the high-pressure steam sterilizer A includes a sterilizer body B in which the chamber 1 is provided, and a door C that can be opened and closed with respect to the front surface of the sterilizer body B. A disk-shaped lid 2 is arranged on the inner side, and a mounting portion 4 is recessed on the surface of the lid 2, and a base portion 3a of the packing 3 is detachably fitted in the mounting portion 4, thereby moving the lid. The part 3 b is brought into contact with the seal surface 5 formed on the periphery of the opening 1 a of the chamber 1.

このような本発明の実施形態に係る高圧蒸気滅菌器Ａの機能を説明する。
先ず、チャンバー１内に被滅菌物を収納し、蓋２を閉めてから作動開始させると、真空ポンプ等の減圧手段が作動開始し、チャンバー１内の空気を真空脱気してチャンバー１外に排除する。
それにより、チャンバー１の内部１ｂが陰圧となって、図２の矢印に示すように、蓋２全体がチャンバー１の開口部１ａの周縁へ向け引き寄せられるため、図２の二点鎖線に示すように、パッキン３の可動部３ｂが基部３ａに接近して、これら両者間に位置する空間部Ｓが押し潰され、基部３ａと可動部３ｂの対向面同士が吸着する可能性がある。 The function of the high pressure steam sterilizer A according to the embodiment of the present invention will be described.
First, when an object to be sterilized is stored in the chamber 1 and the operation is started after the lid 2 is closed, a decompression means such as a vacuum pump starts to operate, and the air in the chamber 1 is vacuum degassed to the outside of the chamber 1. Exclude.
As a result, the inside 1b of the chamber 1 becomes negative pressure, and the entire lid 2 is drawn toward the periphery of the opening 1a of the chamber 1 as shown by the arrow in FIG. As described above, the movable portion 3b of the packing 3 approaches the base portion 3a, and the space portion S positioned therebetween is crushed, so that the opposing surfaces of the base portion 3a and the movable portion 3b may be adsorbed.

このような状況下であっても、その後の滅菌工程が進んで、チャンバー１の内部１ｂに溜められた水をヒーター１ｃで加熱し蒸気を発生させると、チャンバー１内が陰圧から陽圧へ徐々に変化し、これに伴い、蒸気の一部が通気路４ａを通ってパッキン３の基部３ａの背後に流れ込み、ここから貫通孔３ｃを通って空間部Ｓへ向け流出し、空間部Ｓの陰圧状態が開放される。
それにより、パッキン３の可動部３ｂは初期形状に復元し、シール面５へ向け離隔して密着する。 Even under such circumstances, when the subsequent sterilization process proceeds and the water stored in the interior 1b of the chamber 1 is heated by the heater 1c to generate steam, the inside of the chamber 1 is changed from negative pressure to positive pressure. Along with this, a part of the steam flows through the ventilation path 4a to the back of the base portion 3a of the packing 3 and flows out from here through the through hole 3c toward the space portion S. Negative pressure is released.
Thereby, the movable part 3 b of the packing 3 is restored to the initial shape and is closely spaced toward the seal surface 5.

図２及び図３に示した例では、パッキン３の基部３ａ及び可動部３ｂがリング状に一体形成され、このリング状の基部３ａが嵌入する環状凹部４ｂを、取付部４の径方向一部に部分的に形成している。
この環状凹部４ｂの底面には、それと連続するように通気路４ａを形成するとともに、貫通孔３ｃと対向するように環状溝４ｃを全周に亘って形成している。 In the example shown in FIGS. 2 and 3, the base portion 3 a and the movable portion 3 b of the packing 3 are integrally formed in a ring shape, and the annular recess 4 b into which the ring-shaped base portion 3 a is fitted is formed in a part in the radial direction of the mounting portion 4. Is partially formed.
An air passage 4a is formed on the bottom surface of the annular recess 4b so as to be continuous therewith, and an annular groove 4c is formed over the entire circumference so as to face the through hole 3c.

さらに、通気路４ａは、環状凹部４ｂの周方向の上端位置にそれと交差する径方向へ連続するように１つだけ一体形成されるとともに、パッキン３の貫通孔３ｃを１つだけ開穿しており、また環状溝４ｃの形状を断面Ｖ型としている。
その他の例として、環状凹部４ｂの周方向へ所定間隔毎に複数の通気路４ａを形成するとともに、複数の貫通孔３ｃを開穿したり、環状溝４ｃの形状を断面Ｕ字形にするなどすることも可能である。 Further, only one ventilation passage 4a is integrally formed at the upper end position in the circumferential direction of the annular recess 4b so as to continue in the radial direction intersecting therewith, and only one through hole 3c of the packing 3 is opened. In addition, the shape of the annular groove 4c is a V-shaped cross section.
As another example, a plurality of air passages 4a are formed at predetermined intervals in the circumferential direction of the annular recess 4b, a plurality of through holes 3c are opened, and the shape of the annular groove 4c is U-shaped in cross section. It is also possible.

このような本発明の実施形態によると、取付部４の環状凹部４ｂにパッキン３の基部３ａを嵌入する組立時において、これら両者が周方向へどこに配置されても、パッキン３の貫通孔３ｃが環状溝４ｃを介して通気路４ａと連通する。
それにより、取付部４へのパッキン３の組立時に貫通孔３ｃの位置合わせをする必要がなく、その分だけ組立作業が容易になる。 According to such an embodiment of the present invention, when assembling the base portion 3a of the packing 3 into the annular recess 4b of the mounting portion 4, the through-hole 3c of the packing 3 is provided wherever they are arranged in the circumferential direction. The air passage 4a communicates with the annular groove 4c.
Thereby, it is not necessary to align the through hole 3c when assembling the packing 3 to the mounting portion 4, and the assembling work is facilitated accordingly.

なお、図示例において、蓋２の表面に取付部４を凹設してパッキン３の基部３ａを着脱自在に嵌着して、その可動部３ｂをチャンバー１の開口部１ａの周縁に形成されるシール面５に接触させたが、それに限定されるものではなく、図示例とは逆に、チャンバー１の開口部１ａの周縁に取付部４を設けてパッキン３の基部３ａを取り付け、その可動部３ｂを蓋２の表面に形成されるシール面に接触させても良い。   In the illustrated example, the mounting portion 4 is recessed on the surface of the lid 2, and the base portion 3 a of the packing 3 is detachably fitted, and the movable portion 3 b is formed at the periphery of the opening portion 1 a of the chamber 1. Although it contacted the sealing surface 5, it is not limited to that, and conversely to the illustrated example, a mounting portion 4 is provided on the periphery of the opening portion 1a of the chamber 1 to attach the base portion 3a of the packing 3, and its movable portion You may make 3b contact the sealing surface formed in the surface of the lid | cover 2. FIG.

１ チャンバー １ａ 開口部
２ 蓋 ３ パッキン
３ａ 基部 ３ｂ 可動部
３ｃ 貫通孔 ４ 取付部
４ａ 通気路 ４ｂ 環状凹部
４ｃ 環状溝 ５ シール面
Ｓ 空間部 DESCRIPTION OF SYMBOLS 1 Chamber 1a Opening part 2 Lid 3 Packing 3a Base part 3b Movable part 3c Through-hole 4 Mounting part 4a Air flow path 4b Annular recessed part 4c Annular groove 5 Seal surface S Space part

Claims (2)

被滅菌物が収容され空気排除してから蒸気を導入して滅菌処理が行われるチャンバーと、このチャンバーの開口部に対して開閉自在に設けられる蓋と、これらチャンバーの開口部の周縁又は蓋のいずれか一方に設けられて両者間を密閉するパッキンと、前記チャンバー内の空気を真空脱気して前記チャンバー外へ排除する減圧手段とを備え、
前記パッキンは、前記チャンバーの開口部又は前記蓋のいずれか一方に形成した取付部に取り付けられる基部と、この基部から他方のシール面へ向けて空間部を挟むように突出する弾性変形可能な可動部を有し、
前記取付部には、前記チャンバーの内部から前記基部の背後へ向けて連通する通気路を形成し、前記基部には、該通気路から前記空間部へ向けて連通するとともに、前記減圧手段の作動で前記チャンバー内の空気が外に排除された時に、前記チャンバー内に導入された蒸気の一部を前記通気路から前記空間部へ向け流す貫通孔を開穿したことを特徴とする高圧蒸気滅菌器。 A chamber in which an object to be sterilized is accommodated and air is sterilized by introducing steam, a lid that can be opened and closed with respect to the opening of the chamber, a peripheral edge of the opening of the chamber or a lid A packing that is provided on either side and seals between the two, and a decompression unit that vacuum deaerates the air in the chamber and excludes it from the chamber ,
The packing is a base that is attached to an attachment formed on either the opening of the chamber or the lid, and an elastically deformable movable that protrudes from the base toward the other sealing surface so as to sandwich the space. Part
An air passage that communicates from the inside of the chamber toward the back of the base portion is formed in the attachment portion, and the base portion communicates from the air passage toward the space portion and the operation of the pressure reducing unit is performed. A high-pressure steam sterilization characterized in that when the air in the chamber is excluded to the outside, a through-hole that allows a part of the steam introduced into the chamber to flow from the ventilation path to the space portion is opened. vessel. 被滅菌物が収容され空気排除してから蒸気を導入して滅菌処理が行われるチャンバーと、このチャンバーの開口部に対して開閉自在に設けられる蓋と、これらチャンバーの開口部の周縁又は蓋のいずれか一方に設けられて両者間を密閉するパッキンとを備え、
前記パッキンは、前記チャンバーの開口部又は前記蓋のいずれか一方に形成した取付部に取り付けられる基部と、この基部から他方のシール面へ向けて空間部を挟むように突出する弾性変形可能な可動部を有し、
前記取付部には、前記チャンバーの内部から前記基部の背後へ向けて連通する通気路を形成し、前記基部には、該通気路から前記空間部へ向けて連通する貫通孔を開穿し、
前記パッキンの前記基部及び前記可動部がリング状に形成され、前記取付部には、前記基部が嵌入する環状凹部を形成し、この環状凹部の底面には、それと連続するように前記通気路を形成するとともに、前記貫通孔と対向するように環状溝を全周に亘って形成したことを特徴とする高圧蒸気滅菌器。 A chamber in which an object to be sterilized is accommodated and air is sterilized by introducing steam, a lid that can be opened and closed with respect to the opening of the chamber, a peripheral edge of the opening of the chamber or a lid A packing provided on either side and sealing between the two;
The packing is a base that is attached to an attachment formed on either the opening of the chamber or the lid, and an elastically deformable movable that protrudes from the base toward the other sealing surface so as to sandwich the space. Part
In the mounting portion, a vent passage communicating from the inside of the chamber toward the back of the base portion is formed, and in the base portion, a through hole communicating from the vent passage toward the space portion is opened,
Said base and said movable portion of said gasket is formed in a ring shape, the mounting portion forms an annular recess in which the base is fitted, the air passage to the bottom surface of the annular recess, therewith successively A high-pressure steam sterilizer is characterized in that an annular groove is formed over the entire circumference so as to face the through hole.
JP2009059402A 2009-03-12 2009-03-12 High pressure steam sterilizer Expired - Fee Related JP4997260B2 (en)

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JP6271647B2 (en) * 2016-06-24 2018-01-31 株式会社東邦技研 High pressure steam sterilizer
US11714032B2 (en) * 2019-03-22 2023-08-01 Illinois Tool Works Inc. Vacuum systems for epoxy mounting of material samples

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