JP2007000843A - Apparatus for generating fine bubble - Google Patents

Apparatus for generating fine bubble Download PDF

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JP2007000843A
JP2007000843A JP2005187226A JP2005187226A JP2007000843A JP 2007000843 A JP2007000843 A JP 2007000843A JP 2005187226 A JP2005187226 A JP 2005187226A JP 2005187226 A JP2005187226 A JP 2005187226A JP 2007000843 A JP2007000843 A JP 2007000843A
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bubbles
venturi
decompression
pressurizing means
gas
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JP5038600B2 (en
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Yasunari Maeda
康成 前田
Kazumasa Rokushima
一雅 六嶋
Shigeyuki Yamaguchi
重行 山口
Noriyuki Kitachi
範行 北地
Hisanori Shibata
尚紀 柴田
Yoshiyasu Ito
良泰 伊藤
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for generating fine bubbles, in which fine bubbles generated by pulverizing bubbles by a decompressing/pressurizing means are prevented from concentrating at a spot, colliding against one another and becoming many large bubbles. <P>SOLUTION: The apparatus for generating fine bubbles by pulverizing bubbles in a gas-mixed liquid by the decompressing/pressurizing means 1 is provided with a plurality of venturi tubes 11 being decompressing/pressurizing means 1 arranged respectively in parallel in flow passages 2 of the gas-mixed liquid. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、気液混合液中の気泡を減圧・加圧手段にて粉砕して微細気泡を発生する微細気泡発生装置に関するものである。   The present invention relates to a fine bubble generating device that generates fine bubbles by pulverizing bubbles in a gas-liquid mixed solution with a decompression and pressurizing means.

従来から、気液混合液中の気泡を減圧・加圧手段にて粉砕して微細気泡を発生する微細気泡発生装置が知られている（例えば特許文献１参照）。   2. Description of the Related Art Conventionally, there has been known a fine bubble generating device that generates fine bubbles by pulverizing bubbles in a gas-liquid mixed solution with a decompression and pressurizing means (see, for example, Patent Document 1).

この特許文献１に示された従来の微細気泡発生装置は、気液混合液の流路中に減圧・加圧手段を設け、気液混合液中の気泡を減圧・加圧手段の減圧および加圧により生じるせん断力によって粉砕して微細気泡を発生するものである。微細気泡はφ１ｍｍ以下（特に数μｍ〜数十μｍ程）の気泡で、液中において上昇し難いと共に体積当たりの表面積が大きいため汚れ等を吸着して浮上させる等の水質浄化能力が高いものである。   The conventional microbubble generator disclosed in Patent Document 1 is provided with a depressurizing / pressurizing means in the flow path of the gas-liquid mixture, and the depressurizing / pressurizing means of the depressurizing / pressurizing means is used to reduce the bubbles in the gas-liquid mixed liquid. It is pulverized by a shearing force generated by pressure to generate fine bubbles. Fine bubbles are bubbles with a diameter of 1 mm or less (especially about several μm to several tens of μm), which are difficult to rise in the liquid and have a large surface area per volume. is there.

ところで従来の微細気泡発生装置にあっては、減圧・加圧手段にて粉砕して発生した微細気泡同士が衝突して連結し、より大きな気泡が多数発生してしまうものであった。大きな気泡が多数発生しないようにするには微細気泡同士の衝突機会を減らすことが有効であり、発生した微細気泡が一箇所に集中しないようにすることが考えられるものであった。
特許第２７２２３７３号公報 By the way, in the conventional fine bubble generating apparatus, the fine bubbles generated by pulverizing by the pressure reducing / pressurizing means collide with each other and are connected to generate many larger bubbles. In order to prevent the generation of a large number of large bubbles, it is effective to reduce the chance of collision between the fine bubbles, and it is conceivable to prevent the generated fine bubbles from being concentrated in one place.
Japanese Patent No. 2722373

本発明は上記の従来の問題点に鑑みて発明したものであって、その目的とするところは、減圧・加圧手段にて粉砕して発生した微細気泡が一箇所に集中して衝突することによりより大きな気泡が多数発生してしまうのを防止する微細気泡発生装置を提供することを課題とするものである。   The present invention was invented in view of the above-described conventional problems, and the object of the present invention is that fine bubbles generated by pulverization by a pressure reducing / pressurizing means collide in one place. It is an object of the present invention to provide a fine bubble generating device that prevents a large number of larger bubbles from being generated.

上記課題を解決するために本発明の微細気泡発生装置は、気液混合液中の気泡を減圧・加圧手段１にて粉砕して微細気泡を発生する微細気泡発生装置であって、液体の流路２に減圧・加圧手段１としてのベンチュリ管１１を並列に複数設けて成ることを特徴とするものである。   In order to solve the above-mentioned problems, a fine bubble generator of the present invention is a fine bubble generator that generates fine bubbles by pulverizing bubbles in a gas-liquid mixture with a decompression and pressurizing means 1. A plurality of venturi pipes 11 as pressure reducing / pressurizing means 1 are provided in the flow path 2 in parallel.

このような構成とすることで、微細気泡が一箇所に集中して多数衝突することにより大きな気泡が多数発生するのを抑えることができる。   With such a configuration, it is possible to suppress the generation of a large number of large bubbles due to a large number of fine bubbles concentrating at one place and colliding with each other.

また、請求項２に係る発明は、請求項１において並列に複数設けたベンチュリ管１１ｂを下流側の減圧・加圧手段１ｂとし、前記複数のベンチュリ管１１ｂの上流の基幹となる流路２ａに上流側の減圧・加圧手段１ａとしてのベンチュリ管１１ａを設けて成ることを特徴とするものである。   Further, in the invention according to claim 2, the plurality of venturi pipes 11b provided in parallel in claim 1 are used as the pressure reducing / pressurizing means 1b on the downstream side, and the flow path 2a serving as the upstream trunk of the plurality of venturi pipes 11b is provided. A venturi tube 11a is provided as the upstream pressure reducing / pressurizing means 1a.

このような構成にすることで、上流側のベンチュリ管１１ａにて気液混合液中の気泡を粉砕してある程度小さな微細気泡とした後、下流側のベンチュリ管１１ｂにて前記微細気泡を更に微細化させることができ、大量の微細気泡を発生させることが可能となる。   With such a configuration, after the bubbles in the gas-liquid mixed liquid are pulverized into small bubbles to some extent in the upstream venturi tube 11a, the fine bubbles are further refined in the downstream venturi tube 11b. And a large amount of fine bubbles can be generated.

また、請求項３に係る発明は、請求項２において下流側の減圧・加圧手段１ｂとしてのベンチュリ管１１ｂのそれぞれの断面積を上流側の減圧・加圧手段１ａとしてのベンチュリ管１１ａの断面積よりも小さくして成ることを特徴とするものである。   Further, in the invention according to claim 3, the cross-sectional area of the venturi tube 11b as the downstream pressure reducing / pressurizing means 1b in the second aspect is defined as the disconnection of the venturi tube 11a as the upstream pressure reducing / pressurizing means 1a. It is characterized by being made smaller than the area.

このような構成にすることで、複数設けた下流側のベンチュリ管１１ｂの合計の断面積を上流側のベンチュリ管１１ａの断面積と同じに形成すれは、設計上流速（但しベンチュリ管１１ａ、１１ｂ内を除く）の変化を考慮する必要がないものである。   By adopting such a configuration, the total cross-sectional area of the plurality of downstream venturi pipes 11b formed to be the same as the cross-sectional area of the upstream venturi pipe 11a is designed to be a flow velocity (however, the venturi pipes 11a and 11b It is not necessary to take into account changes).

本発明は、微細気泡が一箇所に集中して多数衝突することにより大きな気泡が多数発生するのを抑えることができて、大量の微細気泡を発生させることが可能となる。   The present invention can suppress the generation of a large number of large bubbles due to a large number of fine bubbles colliding with each other and colliding with each other, and can generate a large amount of fine bubbles.

以下、本発明を添付図面に示す実施形態に基いて説明する。   Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

微細気泡発生装置は、減圧・加圧手段１としてのベンチュリ管１１にて主体が構成されるもので、例えば一端の吸込み口と他端の吐出口とがそれぞれ浴槽等の水槽に開口して連通した流路２に、図２に示すように上流側（吸込み口側）から下流側（ノズル側）にかけて、順に液体中に気体を取込んで液体中に気泡が混合された気液混合液を生成するための気体取込み部３と、気液混合液を加圧するためのポンプと、気液混合液中の気泡を粉砕して微細気泡を発生させる減圧・加圧手段１と、微細気泡を浴槽に吐出するノズル４を設けてある。   The microbubble generator is mainly composed of a venturi tube 11 as the pressure reducing / pressurizing means 1, and for example, a suction port at one end and a discharge port at the other end are opened to a water tank such as a bathtub to communicate with each other. As shown in FIG. 2, the gas-liquid mixed liquid in which the gas is taken into the liquid in order from the upstream side (suction port side) to the downstream side (nozzle side) and bubbles are mixed in the liquid is obtained. A gas intake unit 3 for generating, a pump for pressurizing the gas-liquid mixed solution, a decompression / pressurizing means 1 for pulverizing bubbles in the gas-liquid mixed solution to generate fine bubbles, and a bath for fine bubbles Nozzle 4 for discharging is provided.

気体取込み部３としては、例えばエゼクタ機構を有する吸気弁を備え、ポンプを駆動することで液体が流路２を流れる際、外気をエゼクター効果により液体中に取込んで気体（気泡）を混入させるもの等が挙げられるが、特に限定されない。気体としては、酸素、オゾン、空気が挙げられるが特に限定されない。液体中に取込んで気体を混入させるもの等が挙げられるが、特に限定されない。   The gas intake unit 3 includes, for example, an intake valve having an ejector mechanism, and when the liquid flows through the flow path 2 by driving the pump, the external air is taken into the liquid by the ejector effect and gas (bubbles) is mixed therein. There are no particular limitations. Examples of the gas include, but are not limited to, oxygen, ozone, and air. Although what is taken in in a liquid and mixing gas is mentioned, It does not specifically limit.

気液混合液体はポンプを通過した後、減圧・加圧手段１に送られる。   The gas-liquid mixed liquid passes through the pump and is then sent to the decompression / pressurization means 1.

減圧・加圧手段１は、本実施形態では上流側の減圧・加圧手段１ａと下流側の減圧・加圧手段１ｂの二段に形成してある。上流側の減圧・加圧手段１は、図３に示すように一つのベンチュリ管１１ａを流路２（基幹流路２ａ）の一部として設けてある。下流側の減圧・加圧手段１は、図１に示すように流路２の前記上流側の減圧・加圧手段１を設けた部分より下流側を複数の分岐流路２ｂに分岐し、各分岐流路２ｂにそれぞれベンチュリ管１１ｂを設けて構成される。本実施形態では、下流側のベンチュリ管１１ｂは、上流側のベンチュリ管１１ａの径の１／２、断面積は１／４となるように発生させる微細気泡の径に応じて形成すると共に、分岐流路２ｂを四つ形成して各分岐流路２ｂにそれぞれベンチュリ管１１ｂを設けてあり、下流側のベンチュリ管１１ｂの断面積の合計は上流側のベンチュリ管１１ａの断面積に等しくなっている。   In this embodiment, the decompression / pressurization unit 1 is formed in two stages, ie, an upstream decompression / pressurization unit 1a and a downstream decompression / pressurization unit 1b. As shown in FIG. 3, the upstream pressure reducing / pressurizing means 1 is provided with one venturi tube 11a as a part of the flow path 2 (main flow path 2a). As shown in FIG. 1, the downstream pressure reducing / pressurizing means 1 branches the downstream side of the flow path 2 from the portion where the upstream pressure reducing / pressurizing means 1 is provided into a plurality of branch flow paths 2b. Each of the branch channels 2b is provided with a venturi tube 11b. In the present embodiment, the downstream venturi tube 11b is formed in accordance with the diameter of the microbubbles generated so as to be 1/2 of the diameter of the upstream venturi tube 11a and the cross-sectional area is 1/4. Four flow paths 2b are formed, and each branch flow path 2b is provided with a venturi pipe 11b, and the total cross-sectional area of the downstream venturi pipe 11b is equal to the cross-sectional area of the upstream venturi pipe 11a. .

ベンチュリ管１１では、気泡がスロート部を通る際に流速が速くなるとともに減圧されて膨張し、その後は断面積が増加するに従って加圧されて収縮するが、この時に生じるせん断力によって気泡が微細化されて微細気泡が発生する。そして、発生した微細気泡が一箇所に集中すると連結してより大きな気泡となってしまうため、本発明においては複数の分岐流路２ｂに分岐して各分岐流路２ｂに下流側のベンチュリ管１１ｂを設けることで、微細気泡が一箇所に集中して多数衝突することにより大きな気泡が発生するのを抑えることができる。   In the venturi tube 11, when the bubble passes through the throat portion, the flow velocity becomes faster and the pressure is reduced and the bubble expands. After that, the bubble is pressurized and contracted as the cross-sectional area increases. And fine bubbles are generated. When the generated fine bubbles are concentrated at one place, they are connected to become larger bubbles. Therefore, in the present invention, the branched bubbles 2b are branched into the plurality of branch channels 2b and are downstream of the branch channels 2b. By providing, it is possible to suppress the generation of large bubbles due to many fine bubbles concentrating at one place and colliding with each other.

また、本実施形態では下流側のベンチュリ管１１ｂの上流側にベンチュリ管１１ａを設けて二段に構成してあり、はじめに上流側のベンチュリ管１１ａにて気液混合液中の気泡を粉砕してある程度小さな微細気泡とした後、下流側のベンチュリ管１１ｂにて前記ある程度小さな微細気泡を更に微細化させてこれらが連結するのを抑え、大量の微細気泡を発生させることができる。またこの時、下流側のベンチュリ管１１ｂのそれぞれの断面積を上流側のベンチュリ管１１ａの断面積よりも小さく形成して複数設けた下流側のベンチュリ管１１ｂの合計の断面積を上流側のベンチュリ管１１ａの断面積と同じに形成してあるので、設計上流速（但しベンチュリ管１１ａ、１１ｂ内を除く）の変化を考慮する必要がない。   Further, in this embodiment, the venturi tube 11a is provided upstream of the downstream venturi tube 11b and is configured in two stages. First, the bubbles in the gas-liquid mixture are crushed by the upstream venturi tube 11a. After the microbubbles are made small to some extent, the small microbubbles can be further refined in the downstream venturi tube 11b to prevent them from being connected, and a large amount of microbubbles can be generated. At this time, the total cross-sectional area of the plurality of downstream venturi pipes 11b formed by making the respective cross-sectional areas of the downstream venturi pipes 11b smaller than the cross-sectional area of the upstream venturi pipe 11a is determined as the upstream venturi pipe 11b. Since it is formed to have the same cross-sectional area as the tube 11a, it is not necessary to consider changes in the flow velocity (except in the venturi tubes 11a and 11b) in design.

図４に本実施形態の他の実施形態を示す。本実施形態では、基幹流路２ａに設けた第一のベンチュリ管１１ａの下流側に、複数（四つ）並列に設けたベンチュリ管１１ｂからなる第二の減圧・加圧手段１ｂを設けると共に、更に下流側に複数（四つ）並列に設けたベンチュリ管１１ｃからなる第三の減圧・加圧手段１ｃを設けて三段に構成してある。これにより、第一のベンチュリ管１１ａにて気液混合液中の気泡を粉砕してある程度小さな微細気泡とした後、第二のベンチュリ管１１ｂにて前記ある程度小さな微細気泡を更に微細化させると共にこれらが連結するのを抑え、更にこの後第三のベンチュリ管１１ｃにて微細気泡を更に微細化させると共にこれらが連結するのを抑えることができて、より一層大量で且つ微細な微細気泡を発生させることができる。   FIG. 4 shows another embodiment of the present embodiment. In the present embodiment, on the downstream side of the first venturi tube 11a provided in the basic flow path 2a, a second decompression / pressurization means 1b including a plurality (four) of venturi tubes 11b provided in parallel is provided. Further, a third decompression / pressurization means 1c composed of a plurality of (four) parallel venturi pipes 11c is provided on the downstream side, and is configured in three stages. As a result, after the bubbles in the gas-liquid mixture are pulverized in the first venturi tube 11a to make small bubbles of a certain degree, the small bubbles of a certain degree are further refined in the second venturi tube 11b. Can be further suppressed, and further, the fine bubbles can be further refined in the third venturi tube 11c and the connection of these can be suppressed, thereby generating a larger amount of fine bubbles. be able to.

本発明の一実施形態の微細気泡発生装置の要部である下流側の加圧・減圧手段を示し、（ａ）は側断面図であり、（ｂ）は正面断面図である。The downstream pressurization / decompression means, which is the main part of the microbubble generator according to one embodiment of the present invention, is shown, (a) is a side sectional view, and (b) is a front sectional view. 微細気泡発生装置の概略全体構成図である。It is a schematic whole block diagram of a microbubble generator. 同上の微細気泡発生装置の上流側の加圧・減圧手段を示し、（ａ）は側断面図であり、（ｂ）は正面断面図である。The pressurizing / depressurizing means on the upstream side of the fine bubble generating apparatus is shown, (a) is a side sectional view, and (b) is a front sectional view. 本発明の他の実施形態の要部の側断面図である。It is a sectional side view of the principal part of other embodiment of this invention.

符号の説明Explanation of symbols

１ 減圧・加圧手段
１１ ベンチュリ管
２ 流路
３ 気体取込み部
４ ノズル DESCRIPTION OF SYMBOLS 1 Pressure reduction / pressurization means 11 Venturi pipe 2 Flow path 3 Gas intake part 4 Nozzle

Claims (3)

気液混合液中の気泡を減圧・加圧手段にて粉砕して微細気泡を発生する微細気泡発生装置であって、液体の流路に減圧・加圧手段としてのベンチュリ管を並列に複数設けて成ることを特徴とする微細気泡発生装置。   A fine bubble generator that generates fine bubbles by crushing bubbles in a gas-liquid mixture with decompression and pressurization means. A plurality of venturi tubes as decompression and pressurization means are provided in parallel in the liquid flow path. A microbubble generator characterized by comprising: 請求項１において並列に複数設けたベンチュリ管を下流側の減圧・加圧手段とし、前記複数のベンチュリ管の上流の基幹となる流路に上流側の減圧・加圧手段としてのベンチュリ管を設けて成ることを特徴とする請求項１記載の微細気泡発生装置。   2. A plurality of venturi pipes provided in parallel in claim 1 as downstream decompression / pressurization means, and a venturi pipe as upstream decompression / pressurization means is provided in a flow path serving as an upstream trunk of the plurality of venturi pipes. The fine bubble generating apparatus according to claim 1, wherein: 請求項２において下流側の減圧・加圧手段としてのベンチュリ管のそれぞれの断面積を上流側の減圧・加圧手段としてのベンチュリ管の断面積よりも小さくして成ることを特徴とする請求項１記載の微細気泡発生装置。   3. The cross-sectional area of a venturi tube as a downstream pressure reducing / pressurizing means is smaller than the cross-sectional area of a venturi tube as an upstream pressure reducing / pressurizing means in claim 2. The fine bubble generator according to 1.
JP2005187226A 2005-06-27 2005-06-27 Microbubble generator Expired - Fee Related JP5038600B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0663371A (en) * 1992-08-17 1994-03-08 Idec Izumi Corp Gas-liquid dissolving and mixing device
JPH08131800A (en) * 1994-10-31 1996-05-28 Idec Izumi Corp Gas/liquid dissolution and mixing device
JP2000107063A (en) * 1998-10-08 2000-04-18 Hiroyuki Ebara Shower device
JP2001225088A (en) * 2000-02-15 2001-08-21 Mitsubishi Electric Corp Ozone contact method, ozone contact apparatus and water treatment apparatus
JP2005028305A (en) * 2003-07-07 2005-02-03 Institute Of Computational Fluid Dynamics Gas-liquid mixture production device, sewage purifying device and fuel injection equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0663371A (en) * 1992-08-17 1994-03-08 Idec Izumi Corp Gas-liquid dissolving and mixing device
JPH08131800A (en) * 1994-10-31 1996-05-28 Idec Izumi Corp Gas/liquid dissolution and mixing device
JP2000107063A (en) * 1998-10-08 2000-04-18 Hiroyuki Ebara Shower device
JP2001225088A (en) * 2000-02-15 2001-08-21 Mitsubishi Electric Corp Ozone contact method, ozone contact apparatus and water treatment apparatus
JP2005028305A (en) * 2003-07-07 2005-02-03 Institute Of Computational Fluid Dynamics Gas-liquid mixture production device, sewage purifying device and fuel injection equipment

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