JPH0438833Y2 - - Google Patents
Info
- Publication number
- JPH0438833Y2 JPH0438833Y2 JP14075087U JP14075087U JPH0438833Y2 JP H0438833 Y2 JPH0438833 Y2 JP H0438833Y2 JP 14075087 U JP14075087 U JP 14075087U JP 14075087 U JP14075087 U JP 14075087U JP H0438833 Y2 JPH0438833 Y2 JP H0438833Y2
- Authority
- JP
- Japan
- Prior art keywords
- treated
- liquid
- electrodes
- sterilization
- micropores
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims description 22
- 230000001954 sterilising effect Effects 0.000 claims description 22
- 238000004659 sterilization and disinfection Methods 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 16
- 241000894006 Bacteria Species 0.000 claims description 7
- 210000004027 cell Anatomy 0.000 description 16
- 230000005684 electric field Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012531 culture fluid Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000005253 yeast cell Anatomy 0.000 description 1
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は生物実験用培養液、飲料水、飲食物製
造用水等の被処理液中に含まれる細菌類を殺菌す
るのに適用される高電圧パルスによる殺菌セルに
関する。[Detailed description of the invention] [Field of industrial application] The present invention is a highly effective method for sterilizing bacteria contained in liquids to be treated such as culture fluids for biological experiments, drinking water, and water for food and drink production. Concerning sterilization cells by voltage pulses.
〔従来の技術〕
前記の如き被処理液に高電圧パルスを印加し、
その電界によつて前記被処理液中に含まれる細菌
類を殺菌する従来の殺菌セルは、例えば、第４図
に示すような同心円筒型電極を用い、中心部の線
電極０１と円筒電極０２との間に高電圧パルスを
印加するようになされている。なお第４図におい
て、０３は円筒電極０２の絶縁キヤツプ、０４は
高電圧パルス電源、０５は被処理液０６を供給す
るポンプを示し、第５は第４図の線電極０１と円
筒電極０２との間の電位勾配を示す。[Prior art] A high voltage pulse is applied to the liquid to be treated as described above,
A conventional sterilization cell that uses the electric field to sterilize bacteria contained in the liquid to be treated uses concentric cylindrical electrodes as shown in FIG. 4, with a wire electrode 01 in the center and a cylindrical electrode 02 A high voltage pulse is applied between the two. In FIG. 4, 03 is an insulating cap for the cylindrical electrode 02, 04 is a high-voltage pulse power source, 05 is a pump for supplying the liquid to be treated 06, and 5th is a line electrode 01 and a cylindrical electrode 02 in FIG. shows the potential gradient between .
第４図に示す従来の同心円筒型電極を用いる殺
菌セルの場合には、第５に示すように、円筒内部
の電位勾配は線電極０１近傍で高く、円筒電極０
２に近づくにつれ横ばいとなる。従つて従来の殺
菌セルにおいては、電位勾配の緩やかな円筒電極
０２近くを通る被処理液の殺菌効果が低いという
問題があり、また高電導度の被処理液では、高電
界の形成が困難になり、殺菌効果も低下するとい
う問題点があつた。
In the case of a sterilization cell using the conventional concentric cylindrical electrodes shown in FIG. 4, the potential gradient inside the cylinder is high near the wire electrode 01, as shown in FIG.
As it approaches 2, it levels off. Therefore, in conventional sterilization cells, there is a problem that the sterilization effect of the liquid to be treated passing near the cylindrical electrode 02 where the potential gradient is gentle is low, and it is difficult to form a high electric field in the liquid to be treated with high conductivity. There was a problem that the bactericidal effect was also reduced.
本考案は、上記従来の問題点を解消できる殺菌
セルを提供することを目的とする。 The object of the present invention is to provide a sterilization cell that can solve the above-mentioned conventional problems.
本考案による殺菌セルは、絶縁容器内に互いに
対向する一対の電極を配置し、これらの電極の間
に被処理液を満たし、前記電極間に高電圧パルス
を印加することにより、前記被処理液中に含まれ
る細菌を殺菌する殺菌セルにおいて、前記電極の
間に前記被処理液を通過させる微孔を有する絶縁
隔壁を配設してなることを特徴とする。
The sterilization cell according to the present invention arranges a pair of electrodes facing each other in an insulating container, fills a liquid to be treated between these electrodes, and applies a high voltage pulse between the electrodes to sterilize the liquid to be treated. A sterilization cell for sterilizing bacteria contained therein is characterized in that an insulating partition having micropores through which the liquid to be treated passes is disposed between the electrodes.
本考案によれば、向い合う２つの電極の間に微
孔を有する絶縁隔壁を入れることにより、被処理
液が、この微孔内の電界強度の高い領域内を必ら
ず通るようにして殺菌効果を高めるとともに、前
記絶縁隔壁の穴径の調整で殺菌セル内の電気的抵
抗を大きく保てるため、高電導度の被処理液に対
しても高電界の形成が容易になる。
According to the present invention, by inserting an insulating partition wall with micropores between two opposing electrodes, the liquid to be treated is sterilized by ensuring that it passes through the region of high electric field strength within the micropores. In addition to increasing the effectiveness, the electric resistance inside the sterilization cell can be maintained large by adjusting the hole diameter of the insulating partition, making it easy to form a high electric field even for a highly conductive liquid to be treated.
第１図は本考案の一実施例の構成を示す断面図
で、１，１′はそれぞれ絶縁容器６内において互
いに対向する一対の電極、２は微孔を有する絶縁
隔壁、３は細菌を含む被処理液、４は高電圧パル
ス電源、５はポンプ、６は絶縁容器である。
FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention, in which 1 and 1' are a pair of electrodes facing each other in an insulating container 6, 2 is an insulating partition having micropores, and 3 contains bacteria. A liquid to be treated, 4 a high voltage pulse power source, 5 a pump, and 6 an insulating container.
第１図において、処理すべき細菌を含む被処理
液３は、ポンプ５によつて殺菌セルの絶縁容器６
内に送られ、微孔を有する絶縁隔壁２内を（帯留
時間約１秒程度の流速で）流れ、殺菌セル外に排
出されるようになつている。 In FIG. 1, a liquid to be treated 3 containing bacteria to be treated is pumped into an insulating container 6 of a sterilization cell by a pump 5.
It flows inside the insulating partition wall 2 having micropores (at a flow rate with a residence time of about 1 second), and is discharged outside the sterilization cell.
この際一対の電極１，１′間に高電圧パルス電
源４によつて発生させたパルス状の高電圧が印加
されると、微孔を有する絶縁隔壁２内に次の理由
により高電界が生じ細菌は死滅する。 At this time, when a pulsed high voltage generated by the high voltage pulse power source 4 is applied between the pair of electrodes 1 and 1', a high electric field is generated within the insulating partition wall 2 having micropores for the following reason. Bacteria will die.
第２図を参照して、微孔を有する絶縁隔壁２内
に高電界が発生する理由を説明する。 The reason why a high electric field is generated within the insulating partition wall 2 having micropores will be explained with reference to FIG.
第２図Ａにおいて、Ｄは絶縁容器６の内径、Ｔ
は各電極１，１′から微孔を有する絶縁隔壁２ま
での距離、ｔは微孔を有する絶縁隔壁２の厚み、
ｄは微孔の穴径（１個と考えた場合）である。こ
れを電気的等回路で考えると、第２図Ｂに示す如
く、抵抗R1，R2とｒの直列接合であるといえる。 In FIG. 2A, D is the inner diameter of the insulating container 6, and T
is the distance from each electrode 1, 1' to the insulating partition wall 2 having micropores, t is the thickness of the insulating partition wall 2 having micropores,
d is the hole diameter of the micropore (when one is considered). If this is considered as an electrical equivalent circuit, it can be said to be a series junction of resistors R 1 , R 2 and r, as shown in FIG. 2B.
R1＝R2＝ρT／（πD2／４） （Ω）
ρは被処理液の抵抗率（Ω−cm）
ｒ＝ρt／（πd2／４） （Ω）
ここで（R1＋R2）：ｒの比を９：１程度に設定
すると、電極１，１′間に印加した電圧Ｖは絶縁
隔壁２の両端に９／10Vまでは印加されることに
なる。 R 1 = R 2 = ρT / (πD 2 /4) (Ω) ρ is the resistivity of the liquid to be treated (Ω-cm) r = ρt / (πd 2 /4) (Ω) where (R 1 + R 2 ):r ratio is set to about 9:1, the voltage V applied between the electrodes 1 and 1' will be applied to both ends of the insulating partition wall 2 up to 9/10V.
電界強度Ｅ＝９／10V／ｔ（KV／cm）
この場合の絶縁隔壁２内の電界強度は、均一に
なつている。被処理液が高電導度の場合し、ρが
小さくなるため絶縁隔壁２の穴径ｄを小さくして
調整する。 Electric field strength E=9/10V/t (KV/cm) In this case, the electric field strength within the insulating partition 2 is uniform. When the liquid to be treated has high conductivity, ρ becomes small, so the hole diameter d of the insulating partition wall 2 is adjusted to be small.
次に本考案の一実施例の殺菌セルを用いた具体
的な殺菌処理の例について説明する。 Next, a specific example of sterilization treatment using the sterilization cell of one embodiment of the present invention will be explained.
アクリル製円筒セル（内径φ20mm、有効長さ20
mm）内の両端に、白金製の電極を設け、その中間
に厚み10mm、穴径φ1を16個有する微孔絶縁板を
設けた装置を用いて、内部にイースト菌（液の電
導度5000μs／cm）（約107／ml）を流通させ高電圧
パルス印加を行なつた。 Acrylic cylindrical cell (inner diameter φ20mm, effective length 20mm)
Using a device with platinum electrodes at both ends of a tube (10 mm thick and 16 hole diameters φ1) in the middle, a yeast cell (liquid conductivity 5000 μs/cm) was installed. ) (approximately 10 7 /ml) and high voltage pulses were applied.
パルス印加条件は、パルス電圧30KV、電圧半
値幅1μsec、パルス頻度８〜30回／秒、流量7.8
ml／minとした。この結果を第３図に示す。これ
によりパルス印加エネルギＰ≒30cal／mlで生存
率は10-7となりほぼ死滅することがわかる。 Pulse application conditions are pulse voltage 30KV, voltage half width 1μsec, pulse frequency 8 to 30 times/second, flow rate 7.8
ml/min. The results are shown in FIG. From this, it can be seen that when the pulse application energy P≈30 cal/ml, the survival rate is 10 -7 , which means that the cells are almost killed.
なお上記本考案の一実施例においては殺菌セル
として円筒状の絶縁容器６を用いるものについて
説明したが、この円筒状の代りに球状または角筒
状の絶縁容器を用いてもよい。また一対の電極
１，１′の形状としては、平板状、線状または針
状の何れでもよく、さらに多孔質金属板または金
属メツシユにより構成してもよい。さらに微孔を
有する絶縁隔壁２は複数個並設してもよくさらに
また上記殺菌セルを並列または直列に複数個配設
してもよい。さらにまた、例えば、第６図に示す
ように、同心円筒電極１１′内に微孔を有する円
筒状の絶縁隔壁１２を同心的に配設してもよい。
なお第６図は本考案の他の実施例であり、１１は
線電極、１３は被処理液、１４は高電圧パルス電
源、１５はポンプを示し、その作用効果は第１図
に示す実施例について説明したものと実質的に同
一であるからその説明を省略する。 In the above embodiment of the present invention, a cylindrical insulating container 6 is used as the sterilization cell, but a spherical or prismatic insulating container may be used instead of the cylindrical one. Further, the shape of the pair of electrodes 1, 1' may be flat, linear, or acicular, and may be formed of a porous metal plate or a metal mesh. Furthermore, a plurality of insulating partition walls 2 having micropores may be arranged in parallel, and a plurality of the above-mentioned sterilization cells may be arranged in parallel or in series. Furthermore, for example, as shown in FIG. 6, a cylindrical insulating partition wall 12 having micropores may be concentrically disposed within a concentric cylindrical electrode 11'.
FIG. 6 shows another embodiment of the present invention, where 11 is a wire electrode, 13 is a liquid to be treated, 14 is a high voltage pulse power source, and 15 is a pump, the effects of which are similar to the embodiment shown in FIG. 1. Since it is substantially the same as that explained in , the explanation thereof will be omitted.
本考案によれば、以下の如き優れた効果が奏せ
られる。
According to the present invention, the following excellent effects can be achieved.
(1) 従来法に比べ殺菌効果が向上する。(1) The sterilization effect is improved compared to conventional methods.
(2) 同一殺菌率で比較すると大幅な省エネルギと
なる。(2) Significant energy savings when compared at the same sterilization rate.
(3) 高電導度を有する被処理液に対しても高効率
の殺菌ができる。(3) Highly efficient sterilization is possible even for liquids to be treated that have high electrical conductivity.
(4) 構造が簡単なため、装置コストも安く、容易
に大形化ができる。(4) Since the structure is simple, the equipment cost is low and it can be easily enlarged.
(5) 連続処理、回分処理いずれも対応容易で他の
プラントにも容易に組み込める。(5) Both continuous and batch processing are easily supported and can be easily incorporated into other plants.
第１図は本考案の一実施例の構成を示す断面
図、第２図は本考案の一実施例の作用を説明する
ための図で、第２図Ａは断面図、第２図Ｂは等価
回路図、第３図は本考案の一実施例の殺菌セルを
用いた処理結果の例を示す図、第４図は従来例を
示す断面図、第５図は従来例の電位勾配図、第６
図は本考案の他の実施例の構成を示す断面図であ
る。
１，１′……電極、２……微孔を有する絶縁隔
壁、３……被処理液、４……高電圧パルス電源、
５……ポンプ、６……絶縁容器。
Fig. 1 is a sectional view showing the configuration of an embodiment of the present invention, Fig. 2 is a diagram for explaining the operation of an embodiment of the invention, Fig. 2A is a sectional view, and Fig. 2B is a sectional view. An equivalent circuit diagram, FIG. 3 is a diagram showing an example of a processing result using a sterilization cell according to an embodiment of the present invention, FIG. 4 is a cross-sectional view of a conventional example, and FIG. 5 is a potential gradient diagram of a conventional example. 6th
The figure is a sectional view showing the configuration of another embodiment of the present invention. 1, 1'... Electrode, 2... Insulating partition wall having micropores, 3... Liquid to be treated, 4... High voltage pulse power source,
5...Pump, 6...Insulating container.
Claims (1)
し、これらの電極の間に被処理液を満たし、前記
電極間に高電圧パルスを印加することにより、前
記被処理液中に含まれる細菌を殺菌する殺菌セル
において、前記電極の間に前記被処理液を通過さ
せる微孔を有する絶縁隔壁を配設してなることを
特徴とする殺菌セル。 A pair of electrodes facing each other is arranged in an insulating container, a liquid to be treated is filled between these electrodes, and a high voltage pulse is applied between the electrodes to sterilize bacteria contained in the liquid to be treated. A sterilization cell characterized in that an insulating partition having micropores through which the liquid to be treated passes is disposed between the electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14075087U JPH0438833Y2 (en) | 1987-09-14 | 1987-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14075087U JPH0438833Y2 (en) | 1987-09-14 | 1987-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6446046U JPS6446046U (en) | 1989-03-22 |
| JPH0438833Y2 true JPH0438833Y2 (en) | 1992-09-10 |
Family
ID=31405208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14075087U Expired JPH0438833Y2 (en) | 1987-09-14 | 1987-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438833Y2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0511134B8 (en) * | 2004-05-07 | 2021-06-22 | Univ Waterloo | treatment chamber for deactivating microorganisms in a fluid, method for pasteurizing the fluid, pasteurization equipment, and fluid treatment chamber for use in inactivating microorganisms |
| JP4680610B2 (en) * | 2005-01-19 | 2011-05-11 | ホシザキ電機株式会社 | Method and apparatus for producing sanitized water |
| KR101150004B1 (en) * | 2009-09-02 | 2012-05-31 | 한국기초과학지원연구원 | Liquid plasma discharge generation apparatus |
| JP5445966B2 (en) * | 2010-06-30 | 2014-03-19 | 国立大学法人名古屋大学 | Water treatment method and water treatment apparatus |
| JP6008359B2 (en) * | 2012-03-30 | 2016-10-19 | 公立大学法人大阪市立大学 | In-liquid plasma generation apparatus, liquid to be treated purification apparatus, and ion-containing liquid generation apparatus |
| JP6432633B2 (en) * | 2017-03-29 | 2018-12-05 | ダイキン工業株式会社 | Discharge device |
-
1987
- 1987-09-14 JP JP14075087U patent/JPH0438833Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6446046U (en) | 1989-03-22 |
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