JPH01182286A - Air inlet/exhaust port of sterilizing storage tank - Google Patents
Air inlet/exhaust port of sterilizing storage tankInfo
- Publication number
- JPH01182286A JPH01182286A JP62330423A JP33042387A JPH01182286A JP H01182286 A JPH01182286 A JP H01182286A JP 62330423 A JP62330423 A JP 62330423A JP 33042387 A JP33042387 A JP 33042387A JP H01182286 A JPH01182286 A JP H01182286A
- Authority
- JP
- Japan
- Prior art keywords
- storage tank
- sterile storage
- filter
- membrane filter
- sterile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000004659 sterilization and disinfection Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 11
- 239000012528 membrane Substances 0.000 abstract description 25
- 241000894006 Bacteria Species 0.000 abstract description 12
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 241001274961 Rubus repens Species 0.000 abstract 2
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 244000052616 bacterial pathogen Species 0.000 description 6
- 235000013361 beverage Nutrition 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、上水や飲料品等の液体を無菌状態またはほぼ
無菌状態で貯留する無菌貯留タンクへの貯留液の出し入
れに伴ってその無菌貯留タンクに空気を出し入れするた
めの空気流路を形成し、その空気流路に除菌手段を設け
ることで、貯留液の排出、に伴う外気吸入時にその外気
中の雑菌が無菌貯留タンク内へ侵入することを防止する
ようにした無菌貯留タンクの吸排気部に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to the sterilization of liquids such as tap water and beverages when the stored liquid is put in and taken out of a sterile storage tank that stores liquids such as clean water or beverages in a sterile or almost sterile condition. By forming an air flow path to take air in and out of the storage tank, and providing a sterilization means in the air flow path, when the outside air is inhaled as the stored liquid is discharged, germs in the outside air will be transferred into the sterile storage tank. This invention relates to an intake and exhaust part of a sterile storage tank that prevents intrusion.
上述の無菌貯留タンクの吸排気部においては、従来除菌
手段として、メンブレンフィルタ等の除菌フィルタを設
け、その除菌フィルタにより成人外気中の雑菌を除去す
ることで、タンク内を無菌状態またはほぼ無菌状態に維
持するように構成されていた（文献を挙げることができ
ない）。In the intake and exhaust parts of the above-mentioned sterile storage tank, a sterilization filter such as a membrane filter is installed as a conventional sterilization means, and by removing bacteria in the outside air for adults, the inside of the tank is kept in a sterile state or It was constructed to maintain near-sterile conditions (I can't cite any references).
しかし、上述した従来の構成においては、次のような問
題があった。However, the conventional configuration described above has the following problems.
つまり、無菌貯留タンクの内部と外部とで温度差がある
場合、除菌フィルタの表面に結露が生じることがある。That is, if there is a temperature difference between the inside and outside of the sterile storage tank, condensation may occur on the surface of the sterilization filter.
そして、そのような結露が生じると、除菌フィルタに付
着した雑菌が増殖するとともに、雑菌の通過が容易とな
り、その結果、除菌フィルタの除菌能力が大幅に低下、
場合によっては完全に消失し、雑菌による貯留液の汚染
を招来してしまう虞があった。When such condensation occurs, the bacteria attached to the sterilizing filter proliferates, and it becomes easier for the bacteria to pass through, resulting in a significant decrease in the sterilizing ability of the sterilizing filter.
In some cases, it may disappear completely, leading to contamination of the stored fluid with bacteria.
本発明の目的は、上記実情に鑑み、除菌能力を長期にわ
たって高く維持できる無菌貯留タンクの吸排気部を提供
することにある。In view of the above-mentioned circumstances, an object of the present invention is to provide an intake/exhaust section for a sterile storage tank that can maintain high sterilization ability over a long period of time.
本発明による無菌貯留タンクの吸排気部の特徴構成は、
無菌貯留タンクへの貯留液の出し入れに伴ってその無菌
貯留タンクに空気を出し入れするための空気流路に設け
る除菌手段を形成するに、除菌フィルタとそれを加熱す
る加熱手段とを設けたことにある。The characteristic structure of the intake and exhaust part of the sterile storage tank according to the present invention is as follows:
A sterilization filter and a heating means for heating the sterilization filter are provided to form a sterilization means provided in an air flow path for introducing air into and out of the sterile storage tank as the stored liquid is taken in and out of the sterile storage tank. There is a particular thing.
〔作 用〕
つまり、加熱手段が除菌フィルタを加熱することによっ
て、たとえ無菌貯留タンクの内外で温度差が生じている
場合であっても、除菌フィルタの表面で水蒸気の過飽和
状態が生じることがなく、除菌フィルタへの結露が防止
される。[Function] In other words, when the heating means heats the sterilizing filter, even if there is a temperature difference between the inside and outside of the sterile storage tank, a supersaturated state of water vapor will occur on the surface of the sterilizing filter. This prevents condensation on the sterilizing filter.
従って、結露に起因した除菌フィルタに付着した雑菌の
増殖および雑菌濾過性能の低下がなく、除菌フィルタの
除菌能力は長期にわたって高く維持される。Therefore, there is no proliferation of germs adhering to the sterilizing filter due to dew condensation and no deterioration of the filtration performance, and the sterilizing ability of the sterilizing filter is maintained at a high level over a long period of time.
しかも、上述のような結露の防止を、加熱という空気の
流れに障碍となりにくい手段で行うものであるから、空
気流路を介しての空気の出し入れによる無菌貯留タンク
内での圧力の維持機能に支障を来すことがない。Moreover, since the above-mentioned prevention of dew condensation is achieved by heating, which is a method that does not easily impede the flow of air, it is possible to maintain the pressure inside the sterile storage tank by pumping air in and out through the air flow path. There will be no hindrance.
特に、加熱手段として紫外線ランプを用いた場合には、
紫外線の殺菌作用により、除菌フィルタに付着した雑菌
のみならず、外気中に浮遊の雑菌までも殺菌することも
可能になり、除菌フィルタの除菌能力をより長期にわた
って高く維持することができるようになる。Especially when using an ultraviolet lamp as the heating means,
The sterilizing effect of ultraviolet rays makes it possible to sterilize not only germs attached to the sterilizing filter, but also germs floating in the outside air, allowing the sterilizing ability of the sterilizing filter to be maintained at a high level for a longer period of time. It becomes like this.
その結果、空気流路を介しての空気の流れを妨げること
なく、除菌フィルタの結露を防止して、長期間にわたっ
て除菌フィルタの除菌機能を高く維持できるから、外気
の吸入に伴う無菌貯留タンク内への外気中の雑菌の侵入
を確実に防止して貯留液の汚染をより一層確実に防ぐこ
とを可能にした無菌貯留タンクの吸排気部にできた。As a result, condensation on the sterilizing filter is prevented without interfering with the air flow through the air flow path, and the sterilizing function of the sterilizing filter can be maintained at a high level over a long period of time. The intake and exhaust part of a sterile storage tank can reliably prevent bacteria from the outside air from entering the storage tank, and even more reliably prevent contamination of the stored liquid.
以下、図面に基づいて、本発明の詳細な説明する。 Hereinafter, the present invention will be described in detail based on the drawings.
第１図に示すように、上水や飲料品等の液体を無菌状態
で貯留する無菌貯留タンク（１）に、内部に空気流路（
Ｆ）を形成する管（２）をフランジ接続して吸排気部（
Ｘ）を構成しである。As shown in Figure 1, a sterile storage tank (1) that stores liquids such as clean water and beverages in a sterile state has an air flow path (
F) is connected with a flange to the pipe (2) forming the intake and exhaust part (
X).
この吸排気部（Ｘ）は、無菌貯留タンク（１）内に貯留
液が流入してそのレベルが上昇するにつれて、空気流路
（Ｆ）を介して無菌貯留タンク（１）内の空気を外部に
逃す一方、無菌貯留タンク（１）から貯留液が流出して
そのレベルが下降するにつれて、空気流路（Ｆ）を介し
て外気を無菌貯留タンク（１）内に吸入することによっ
て、無菌貯留タンク（１）内の貯留液のレベルに拘らず
、その内部圧力をほぼ一定に維持するものである。This suction/exhaust part (X) pumps the air in the sterile storage tank (1) to the outside through the air flow path (F) as the stored liquid flows into the sterile storage tank (1) and its level rises. On the other hand, as the stored liquid flows out of the sterile storage tank (1) and its level decreases, outside air is drawn into the sterile storage tank (1) through the air flow path (F). The internal pressure of the tank (1) is maintained almost constant regardless of the level of the liquid stored in the tank (1).
前記吸排気部（Ｘ）を構成する管（２）は、その内部に
、後述の紫外線ランプ（５）とで除菌手段（Ａ）を形成
するメンブレンフィルタ（３）を介装しである。このメ
ンブレンフィルタ（３）は、上述した無菌貯留タンク（
１）内での貯留物レベルの降下に伴って生じる外気の吸
入時に、外気中の雑菌を吸着して保持することでその雑
菌の無菌貯留タンク（１）内への侵入を防止し、無菌貯
留タンク（１）の内部を無菌またはほぼ無菌状態に維持
するものである。The tube (2) constituting the intake/exhaust section (X) has a membrane filter (3) interposed therein, which forms a sterilization means (A) together with an ultraviolet lamp (5), which will be described later. This membrane filter (3) is connected to the above-mentioned sterile storage tank (
1) When outside air is inhaled due to a drop in the level of stored matter in the storage tank (1), by adsorbing and retaining the bacteria in the outside air, the bacteria are prevented from entering the sterile storage tank (1), and sterile storage is achieved. This is to maintain the inside of the tank (1) in a sterile or nearly sterile state.
前記メンブレンフィルタ（３）は、［０゜２２μｍ］の
孔径のセルロース製で、前記管（２）の下部（２Ａ）に
形成された段違部（２ａ）と、前記管（２）の上部（２
Ｂ）と下部（２人）とのフランジ接続部間に介装された
孔（４ａ）付きの支持板（４）とによって挟持されて固
定されている。The membrane filter (3) is made of cellulose with a pore diameter of [0°22 μm], and has a stepped portion (2a) formed at the lower part (2A) of the tube (2) and an upper portion (2A) of the tube (2). 2
B) and a support plate (4) with a hole (4a) interposed between the flange connection part of the lower part (two people) and fixed.
また、この管（２）のうち、一端が外気に開口する上部
（２Ｂ）には、除菌フィルタの一例である前記メンブレ
ンフィルタ（３）を加熱する加熱手段（ＨＭ）として紫
外線ランプ（５）が設けられている。そして、この紫外
線ランプ（５）でメンブレンフィルタ（３）を照射して
加熱することにより、無菌貯留タンク（１）の内外に温
度差がある場合であっても、メンブレンフィルタ（３）
の表面近傍において水蒸気の過飽和状態となって結露が
生じることを防止し、そのメンブレンフィルタ（３）に
付着した雑菌が結露水中で増殖することで生じるメンブ
レンフィルタ（３）の除菌能力の低下を防止するように
構成しである。Further, in the upper part (2B) of the tube (2), one end of which opens to the outside air, an ultraviolet lamp (5) is installed as a heating means (HM) for heating the membrane filter (3), which is an example of a sterilization filter. is provided. By irradiating and heating the membrane filter (3) with this ultraviolet lamp (5), even if there is a temperature difference between the inside and outside of the sterile storage tank (1), the membrane filter (3)
This prevents dew condensation due to supersaturation of water vapor near the surface of the membrane filter (3), and reduces the sterilization ability of the membrane filter (3) caused by bacteria adhering to the membrane filter (3) multiplying in the condensed water. It is configured to prevent
さらに、紫外線ランプク５）でメンブレンフィルタ（３
）をそれよりも外気側から照射することにより、その紫
外線の殺菌作用でメンブレンフィルタ（３）に付着した
雑菌を殺すのみならず、吸入される外気中の雑菌をメン
ブレンフィルタ（３）に達する以前に殺すことによって
、メンブレンフィルタ（３）による除菌能力が長期にわ
たて高く維持されるように構成しである。Furthermore, use a membrane filter (3) using an ultraviolet lamp (5).
) is irradiated from the outside air side, the sterilizing effect of the ultraviolet rays not only kills germs adhering to the membrane filter (3), but also kills germs in the inhaled outside air before it reaches the membrane filter (3). The structure is such that the sterilization ability of the membrane filter (3) is maintained at a high level over a long period of time by killing bacteria.
次に、本発明による無菌貯留タンクの吸排気部を用いた
実験の結果を、次頁の表に示す実験データを用いて説明
する。Next, the results of an experiment using the intake and exhaust part of the sterile storage tank according to the present invention will be explained using the experimental data shown in the table on the next page.
この実験は、逆浸透膜透過水に含まれる残留塩素を還元
剤で除去した後の水を貯留する無菌貯留タンク（１）に
、本発明による吸排気部（Ｘ）、蜂菌フィルタ（３）の
みを除菌手段（Ａ） として設けた従来の吸排気部、な
らびに、除菌手段（Ａ）を持たない吸排気部の３つにつ
いて、それぞれ無菌貯留タンク（１）内の生菌数を調べ
たものである。In this experiment, a sterile storage tank (1) that stores water after residual chlorine contained in reverse osmosis membrane permeated water is removed using a reducing agent, an intake/exhaust part (X) according to the present invention, a bee filter (3) The number of viable bacteria in the sterile storage tank (1) was determined for each of the three: the conventional intake and exhaust section that only has a sterilization means (A), and the intake and exhaust section that does not have a sterilization means (A). It is something that
なお、無菌貯留タンク（１）の容量は［０，５ｍす、無
菌貯留タンク（１）内の水温は［２０℃］、吸排気量を
［１ｍ’／ｈ］とし、表中の実験データは、［３５℃、
４８ｈ］の培養条件によるコロニー数を［個／ｍβ］の
単位で表したものである。また、本発明による吸排気部
（Ｘ）において、紫外線ランプ（５）は［５Ｗ］のもの
を用いた。The capacity of the sterile storage tank (1) is [0.5 m], the water temperature in the sterile storage tank (1) is [20°C], the intake and exhaust flow is [1 m'/h], and the experimental data in the table is , [35℃,
The number of colonies under culture conditions for 48 h] is expressed in units of [cells/mβ]. Further, in the intake/exhaust section (X) according to the present invention, a [5W] ultraviolet lamp (5) was used.
次に、本発明の別の実施例を列記する。 Next, another example of the present invention will be listed.
く１〉加熱手段（ＨＭ）としては、紫外線ランプ（５）
に替えて、加熱効率の高い赤外線ランプやヒータを設け
てもよく、また、その加熱手段（）ＩＭ）を設ける位置
は、先の実施例で説明したメンブレンフィルタ（３）よ
りも外気側の位置に替えて、第２図に示すように、メン
ブレンフィルタ（３）よりも無菌貯留タンク（１）側で
あってもよい。1> As the heating means (HM), an ultraviolet lamp (5)
Instead, an infrared lamp or heater with high heating efficiency may be provided, and the heating means ()IM) may be provided at a position closer to the outside air than the membrane filter (3) described in the previous embodiment. Alternatively, as shown in FIG. 2, it may be located closer to the sterile storage tank (1) than the membrane filter (3).
く２〉加熱手段（ＨＭ）としては、先の実施例や上記く
１〉で説明したようなメンブレンフィルタ（３）とは別
に設けるものに替えて、図示はしないが、メンブレンフ
ィルタ（３）に電熱線等の加熱手段（）ＩＭ）を組み込
む構成としたものであってもよい。(2) The heating means (HM) may be provided separately from the membrane filter (3) as explained in the previous embodiment or in (1) above, but instead of being provided separately from the membrane filter (3). It may also be configured to incorporate a heating means (IM) such as a heating wire.
く３〉除菌フィルタとしては、先の実施例で説明したメ
ンブレンフィルタ（３）のような多孔質の膜状のものに
替えて、ガラス綿や木綿等の繊維質のものであってもよ
く、その種類や取付構造等の具体的構成は適宜変更可能
である。3) As a sterilization filter, instead of a porous membrane filter like the membrane filter (3) explained in the previous example, a fibrous filter such as glass cotton or cotton may be used. , the specific configuration such as its type and mounting structure can be changed as appropriate.
く４〉本発明１こよる無菌貯留タンクの吸排気部は、内
部に上水や飲料品等を無菌状態で貯留するための各種の
無菌貯留タンク（１）に適用することが可能である。(4) The intake and exhaust part of the sterile storage tank according to the present invention 1 can be applied to various sterile storage tanks (1) for storing clean water, beverages, etc. in a sterile state.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
第１図は本発明に係る無菌貯留タンクの吸排気部の実施
例を示す断面図である。第２図は本発明の別の実施例を
示す断面図である。
（１）・・・・・・無菌貯留タンク、（Ａ）・・・・・
・除菌手段、（３）・・・・・・除菌フィルタ、（５）
・・・・・・紫外線ランプ、（Ｆ）・・・・・・空気流
路、（ＨＭ）・・・・・・加熱手段。FIG. 1 is a sectional view showing an embodiment of the intake and exhaust section of a sterile storage tank according to the present invention. FIG. 2 is a sectional view showing another embodiment of the invention. (1)... Sterile storage tank, (A)...
- Sterilization means, (3)... Sterilization filter, (5)
......Ultraviolet lamp, (F)...Air flow path, (HM)...Heating means.
Claims (1)
てその無菌貯留タンク（１）に空気を出し入れするため
の空気流路（Ｆ）を形成し、その空気流路（Ｆ）に除菌
手段（Ａ）を設けてある無菌貯留タンクの吸排気部にお
いて、前記除菌手段（Ａ）を形成するに、除菌フィルタ
（３）とそれを加熱する加熱手段（ＨＭ）とを設けてあ
る無菌貯留タンクの吸排気部。 ２、前記加熱手段（ＨＭ）が紫外線ランプ（５）である
特許請求の範囲第１項に記載の無菌貯留タンクの吸排気
部。 ３、前記加熱手段（ＨＭ）が赤外線ランプ（５）である
特許請求の範囲第１項に記載の無菌貯留タンクの吸排気
部。[Scope of Claims] 1. An air flow path (F) is formed to take air in and out of the sterile storage tank (1) as the stored liquid is put in and out of the sterile storage tank (1), and the air flow path In the suction/exhaust section of a sterile storage tank in which a sterilization means (A) is provided in the passage (F), the sterilization means (A) is formed by a sterilization filter (3) and a heating means (3) for heating it. The intake and exhaust part of the sterile storage tank is equipped with HM). 2. The intake and exhaust part of a sterile storage tank according to claim 1, wherein the heating means (HM) is an ultraviolet lamp (5). 3. The intake and exhaust section of a sterile storage tank according to claim 1, wherein the heating means (HM) is an infrared lamp (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62330423A JPH07110670B2 (en) | 1987-12-25 | 1987-12-25 | Intake / exhaust part of aseptic storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62330423A JPH07110670B2 (en) | 1987-12-25 | 1987-12-25 | Intake / exhaust part of aseptic storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01182286A true JPH01182286A (en) | 1989-07-20 |
| JPH07110670B2 JPH07110670B2 (en) | 1995-11-29 |
Family
ID=18232442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62330423A Expired - Lifetime JPH07110670B2 (en) | 1987-12-25 | 1987-12-25 | Intake / exhaust part of aseptic storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07110670B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5464719A (en) * | 1977-11-01 | 1979-05-24 | Sumitomo Electric Ind Ltd | Tank |
| JPS6058224U (en) * | 1983-09-29 | 1985-04-23 | 富士通株式会社 | Micro air filter for pure water storage tank |
-
1987
- 1987-12-25 JP JP62330423A patent/JPH07110670B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5464719A (en) * | 1977-11-01 | 1979-05-24 | Sumitomo Electric Ind Ltd | Tank |
| JPS6058224U (en) * | 1983-09-29 | 1985-04-23 | 富士通株式会社 | Micro air filter for pure water storage tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07110670B2 (en) | 1995-11-29 |
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