JP4582088B2 - Microbubble generator - Google Patents

Microbubble generator Download PDF

Info

Publication number
JP4582088B2
JP4582088B2 JP2006342418A JP2006342418A JP4582088B2 JP 4582088 B2 JP4582088 B2 JP 4582088B2 JP 2006342418 A JP2006342418 A JP 2006342418A JP 2006342418 A JP2006342418 A JP 2006342418A JP 4582088 B2 JP4582088 B2 JP 4582088B2
Authority
JP
Japan
Prior art keywords
gas
discharge
liquid
nozzle
bubbles
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.)
Active
Application number
JP2006342418A
Other languages
Japanese (ja)
Other versions
JP2008149052A (en
Inventor
尚紀 柴田
康成 前田
重行 山口
貴也 丹生
仁史 北村
良泰 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Electric Works Co Ltd
Original Assignee
Panasonic Corp
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Works Ltd filed Critical Panasonic Corp
Priority to JP2006342418A priority Critical patent/JP4582088B2/en
Publication of JP2008149052A publication Critical patent/JP2008149052A/en
Application granted granted Critical
Publication of JP4582088B2 publication Critical patent/JP4582088B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Devices For Medical Bathing And Washing (AREA)

Description

本発明は、浴水等の白濁性が向上する微細気泡発生装置に関する。   The present invention relates to a fine bubble generating device that improves white turbidity such as bath water.

従来、液体中に気体が加圧溶解された気液溶解流体を減圧手段で圧力開放して、微細気泡を発生させながら吐出ノズルから浴槽内に噴射吐出させるようにした微細気泡発生装置がある(特許文献1参照)。
特開平11−33071号公報
2. Description of the Related Art Conventionally, there is a fine bubble generating device in which a gas-liquid dissolved fluid in which a gas is pressurized and dissolved in a liquid is released by a decompression unit and ejected and discharged from a discharge nozzle into a bathtub while generating fine bubbles ( Patent Document 1).
JP-A-11-33071

前記のような微細気泡発生装置の吐出ノズルに、減圧手段であるベンチュリ管を設けた場合、ベンチュリ管の吐出口の管路内壁面と吐出外端面との交点部分がエッジに形成されるようになるから、発生した気泡が吐出口から噴出する際に、吐出口周辺で渦流およびこれに伴う逆流が発生して(乱流)、吐出された気泡が混合されて合体することで、浴水等の白濁性が悪くなるという問題があった。   When a venturi pipe as decompression means is provided in the discharge nozzle of the fine bubble generator as described above, an intersection portion between the inner wall surface of the discharge port of the venturi pipe and the outer end surface of the discharge is formed at the edge. Therefore, when the generated bubbles are ejected from the discharge port, a vortex and a backflow associated therewith are generated around the discharge port (turbulent flow), and the discharged bubbles are mixed and united, so that the bath water etc. There was a problem that the white turbidity of the water deteriorated.

本発明は、前記問題を解消するためになされたもので、浴水等の白濁性が向上する微細気泡発生装置を提供することを目的とするものである。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fine bubble generating device that improves white turbidity such as bath water.

前記課題を解決するために、本発明は、液体中に気体が加圧溶解された気液溶解流体を減圧手段で圧力開放して、微細気泡を発生させながら吐出ノズルから噴射吐出させる微細気泡発生装置であって、前記吐出ノズルに、前記減圧手段である複数個のベンチュリ管が並列で設けられ、各ベンチュリ管の吐出口の管路内壁面と吐出外端面との交点部分が湾曲面に形成されていることを特徴とする微細気泡発生装置を提供するものである。   In order to solve the above-mentioned problems, the present invention provides a method for generating fine bubbles in which a gas-liquid dissolved fluid in which a gas is pressurized and dissolved in a liquid is depressurized by a decompression unit and ejected and discharged from a discharge nozzle while generating fine bubbles. In the apparatus, a plurality of venturi pipes serving as the pressure reducing means are provided in parallel to the discharge nozzle, and an intersection portion between the inner wall surface of the discharge port of each venturi pipe and the outer discharge end surface is formed in a curved surface. The present invention provides a fine bubble generating device characterized by the above.

請求項2のように、前記湾曲面は、交点部分にのみ形成して、吐出外端面にフラット面が残るように形成することが好ましい。   According to a second aspect of the present invention, it is preferable that the curved surface is formed only at the intersection portion so that a flat surface remains on the discharge outer end surface.

本発明によれば、吐出ノズルに設けた複数個のベンチュリ管の吐出口の管路内壁面と吐出外端面との交点部分を湾曲面に形成したから、交点部分をエッジに形成した場合には、発生した気泡が吐出口から噴出する際に、吐出口周辺で渦流およびこれに伴う逆流が発生して、吐出された気泡が混合されて合体することで、浴水等の白濁性が悪くなるという問題があったが、交点部分を湾曲面に形成することで、エッジのような急激な角部が無くなって、吐出口周辺で渦流およびこれに伴う逆流が発生しにくくなり、吐出された気泡が均一に拡散して流れるので、気泡の合体が防止されて、浴水等の白濁性が向上するようになる。   According to the present invention, since the intersection point between the inner wall surface and the outer discharge end surface of the discharge ports of the plurality of venturi pipes provided in the discharge nozzle is formed on the curved surface, when the intersection portion is formed on the edge, When the generated bubbles are ejected from the discharge port, a vortex flow and a back flow associated therewith are generated around the discharge port, and the discharged bubbles are mixed and united, so that the white turbidity of bath water and the like deteriorates However, by forming the intersection at a curved surface, there are no sharp corners such as edges, making it difficult for eddy currents and associated backflows to occur around the discharge port. Is uniformly diffused, so that coalescence of bubbles is prevented and white turbidity of bath water or the like is improved.

請求項2によれば、湾曲面を交点部分にのみ形成して、吐出外端面にフラット面が残るように形成することで、隣り合うベンチュリ管の吐出口からの気泡と干渉が生じないようになる。   According to the second aspect of the present invention, the curved surface is formed only at the intersection, and the flat surface remains on the outer end surface of the discharge so as not to interfere with bubbles from the discharge port of the adjacent venturi tube. Become.

以下、本発明を実施するための最良の形態について、図面を参照しながら詳細に説明する。   Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

図1は、例えば、浴槽1内の浴水中に微細気泡を発生させる微細気泡発生装置の基本構成図であり、浴槽1の内側面に吸込口2と吐出口3とが設けられ、浴槽1のフランジ部に空気吸込口4が設けられている。   FIG. 1 is a basic configuration diagram of a microbubble generator that generates microbubbles in bath water in a bathtub 1, for example, and a suction port 2 and a discharge port 3 are provided on the inner surface of the bathtub 1. An air inlet 4 is provided in the flange portion.

吸込口2は、接続管5を介してポンプ6の吸い込み側に接続され、ポンプ6の吐出側は流入管7を介して気体溶解装置8の吸込側の噴射口9に接続されている。気体溶解装置8の吐出側の流出口10は、流出管11を介して圧力開放部となるベンチュリ管12の一端に接続され、ベンチュリ管12の他端は接続管13を介して浴槽1の側面に設置された吐出口3に接続されている。また、空気吸込口4は、ポンプ6と気体溶解装置8との間の流入管7に接続管14を介して接続され、接続管14には、逆止弁15が設けられている。   The suction port 2 is connected to the suction side of the pump 6 through the connection pipe 5, and the discharge side of the pump 6 is connected to the injection port 9 on the suction side of the gas dissolving device 8 through the inflow pipe 7. The outlet 10 on the discharge side of the gas dissolving device 8 is connected to one end of a venturi pipe 12 serving as a pressure release portion via an outflow pipe 11, and the other end of the venturi pipe 12 is connected to the side surface of the bathtub 1 via a connection pipe 13. Is connected to the discharge port 3 installed in the. The air suction port 4 is connected to an inflow pipe 7 between the pump 6 and the gas dissolving device 8 via a connection pipe 14, and a check valve 15 is provided in the connection pipe 14.

そして、気体が溶解した湯水が吐出口3より浴槽1内の浴水中に吐出されると、浴水中で溶解気体が析出して微細気泡が発生するようになる。   And when the hot water which gas melt | dissolved is discharged in the bath water in the bathtub 1 from the discharge outlet 3, dissolved gas will precipitate in bath water and a fine bubble will come to be generated.

前記気体溶解装置8は、図2および図3に詳細に示すように、断面円形の直筒状をした側壁部21と、この側壁部21の両側の端部を閉塞する端壁部22とからなる筒状体23で構成されて、長手方向すなわち略円筒状をした側壁部21の中心軸イ(図2の一点鎖線参照)が水平方向ロ(図2の矢印参照)に対して10〜45度の傾斜角度θで傾斜する姿勢で配置されている。   As shown in detail in FIG. 2 and FIG. 3, the gas dissolving device 8 includes a side wall portion 21 having a straight cylindrical shape with a circular cross section, and end wall portions 22 that close both ends of the side wall portion 21. The center axis A (refer to the one-dot chain line in FIG. 2) of the side wall portion 21 that is formed of the cylindrical body 23 and has a longitudinal direction, that is, substantially cylindrical, is 10 to 45 degrees with respect to the horizontal direction (see the arrow in FIG. 2). It is arrange | positioned with the attitude | position which inclines with the inclination-angle (theta).

この傾斜姿勢の筒状体23は、上方側の端部が上流側Aの端部になるとともに、下方側の端部が下流側Bの端部となり、上流側Aに気液混合流体を筒状体23内に噴射するための噴射口9を形成されるとともに、下流側Bに液体を筒状体23内から流出する流出口10が形成されている。   The cylindrical body 23 in this inclined posture has an upper end serving as an upstream A end, and a lower end serving as a downstream B end. An injection port 9 for injecting into the cylindrical body 23 is formed, and an outflow port 10 through which liquid flows out from the cylindrical body 23 is formed on the downstream side B.

筒状体23内には、溶質となる例えば空気等の気体と、溶媒となる例えば水等の液体とが貯留されるもので、略円筒状をした側壁部21の上下方向の略中央付近には気体と液体との界面24が位置し、界面24より上部の上流側Aの部分は、気体が貯留される気体貯留部25になるとともに、界面24より下流側Bの部分は、液体が貯留される液体貯留部26となる。   In the cylindrical body 23, a gas such as air, which becomes a solute, and a liquid such as water, which becomes a solvent, are stored, and is approximately in the vicinity of the vertical center of the substantially cylindrical side wall portion 21. The interface 24 between the gas and the liquid is located, and the portion on the upstream side A above the interface 24 becomes the gas storage portion 25 where the gas is stored, and the portion on the downstream side B from the interface 24 stores the liquid. It becomes the liquid storage part 26 to be performed.

前記噴射口9は、気体貯留部25の内壁面(界面24より上流側Aの側壁部21または端壁部22の内壁面)か、界面24寄りの位置か、あるいは界面24より若干下側の液体貯留部26の内壁面(界面24より下流側Bの側壁部21の内壁面)に形成され、流出口10は、液体貯留部26の端部付近の内壁面(界面24より下流側Bの側壁部21または端壁部22の内壁面)に形成される。   The injection port 9 is located on the inner wall surface of the gas reservoir 25 (the inner wall surface of the side wall 21 or the end wall 22 on the upstream side A from the interface 24), at a position near the interface 24, or slightly below the interface 24. It is formed on the inner wall surface of the liquid reservoir 26 (inner wall surface of the side wall 21 on the downstream side B from the interface 24), and the outlet 10 is located on the inner wall surface near the end of the liquid reservoir 26 (on the downstream side B of the interface 24) The inner wall surface of the side wall portion 21 or the end wall portion 22 is formed.

筒状体23の側壁部21には、弁(図示せず)を設けた空気抜き口27が形成してあり、この空気抜き口27の位置が気体貯留部25に貯留される気体と液体貯留部26に貯留される液体の界面24のレベルとなる。   The side wall 21 of the cylindrical body 23 is formed with an air vent 27 provided with a valve (not shown). The position of the air vent 27 is stored in the gas reservoir 25 and the gas reservoir 26. It becomes the level of the interface 24 of the liquid stored in.

次に、気体溶解装置8の作用を説明する。噴射口9から筒状体23内に貯留されているのと同じ液体および気体が噴射されると、噴射口9と対向する側壁部21の上側の内壁面に衝突し、この内壁面で跳ね返って界面24にて液体貯留部26に貯留されている液体に衝突して攪拌される。また、液体貯留部26に貯留されている液体は、気液混合流体が界面24に衝突して攪拌される他に、噴射口9から筒状体23内に噴射される気液混合流体によっても攪拌される。   Next, the operation of the gas dissolving device 8 will be described. When the same liquid and gas stored in the cylindrical body 23 are jetted from the jet port 9, they collide with the inner wall surface on the upper side of the side wall portion 21 facing the jet port 9 and bounce off the inner wall surface. The liquid collides with the liquid stored in the liquid reservoir 26 at the interface 24 and is agitated. Further, the liquid stored in the liquid storage unit 26 is not only stirred by the gas-liquid mixed fluid colliding with the interface 24, but also by the gas-liquid mixed fluid injected into the cylindrical body 23 from the injection port 9. Stir.

このように、気液混合流体の側壁部21の内壁面との衝突や界面24での衝突による攪拌、噴射される際の液体の攪拌等により、筒状体23内に貯留している気体および液体、気液混合流体中の気体および液体が混合され、気体の液体への溶解が促進される。すなわち、混合攪拌によるせん断により、液体に混合している気泡(気体)が細分化されて、液体と接する総表面積が大きくなるのに加えて、液体と気体との界面付近における気体の溶解濃度が混合攪拌による均一化により低減されて、気体の液体への溶解速度が上昇するため、気体の液体への溶解が促進される。   As described above, the gas stored in the cylindrical body 23 and the like by the agitation due to the collision with the inner wall surface of the side wall portion 21 of the gas-liquid mixed fluid, the collision at the interface 24, the agitation of the liquid when being jetted, and the like The liquid, the gas in the gas-liquid mixed fluid, and the liquid are mixed, and dissolution of the gas into the liquid is promoted. That is, the bubbles (gas) mixed in the liquid are subdivided by shearing by mixing and stirring, and the total surface area in contact with the liquid is increased. In addition, the dissolved concentration of the gas near the interface between the liquid and the gas is increased. Since it is reduced by homogenization by mixing and stirring, and the dissolution rate of the gas in the liquid increases, dissolution of the gas in the liquid is promoted.

気体の溶解が進行した液体は筒状体23の液体貯留部26に貯留されるが、貯留されている液体には未溶解の気泡も数多く混合し、このような気泡は上方に行くほど密に存在しており、液体貯留部26の下端部近傍では気泡はあまり存在せず、大きな気泡は殆ど存在しない。そして、気体の溶解が進行して大きな気泡が殆ど存在しない液体貯留部26の下端部の液体が流出口10から筒状体23外に流出されるようになる。   The liquid in which the dissolution of the gas has progressed is stored in the liquid storage portion 26 of the cylindrical body 23, but many undissolved bubbles are mixed in the stored liquid, and these bubbles become denser as they go upward. There are few bubbles near the lower end of the liquid reservoir 26, and there are almost no large bubbles. Then, the dissolution of the gas proceeds, and the liquid at the lower end of the liquid storage part 26 in which there are almost no large bubbles flows out from the tubular body 23 through the outlet 10.

図4は、前記ベンチュリ管12の基本構成図である。前記流出管11のベンチュリ管12は、中央1個の上流側ベンチュリ管12aと複数個(図4の例では5個)の下流側ベンチュリ管12bとの2段構成となっている。このように、下流側ベンチュリ管12bを並列で複数個を設けることにより、上流側ベンチュリ管12aで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に、下流側ベンチュリ管12bでより小さな微細気泡化させることができるので、より小さい微細気泡を大量に発生させることができる。   FIG. 4 is a basic configuration diagram of the venturi tube 12. The venturi pipe 12 of the outflow pipe 11 has a two-stage configuration including one upstream venturi pipe 12a in the center and a plurality (five in the example of FIG. 4) downstream venturi pipes 12b. In this way, by providing a plurality of downstream venturi pipes 12b in parallel, the bubbles in the gas-liquid mixture are crushed into small bubbles to some extent by the upstream venturi pipe 12a, and then the downstream venturi pipe 12b. Since smaller bubbles can be formed, a larger amount of smaller bubbles can be generated.

図5および図6は、図1〜図4の基本構成を具体化した微細気泡発生装置であり、基本構成と同一構成は同一番号を付して詳細な説明は省略する。   FIGS. 5 and 6 are microbubble generators embodying the basic configuration of FIGS. 1 to 4, and the same configuration as the basic configuration is denoted by the same reference numeral, and detailed description thereof is omitted.

浴槽1の側壁1a(図6参照)に吐出ノズル30が取付けられ、この吐出ノズル30に、前述した吸込口2、吐出口3、ベンチュリ管12(12a,12b)等が組み込まれてユニット化されている。   A discharge nozzle 30 is attached to the side wall 1a (see FIG. 6) of the bathtub 1, and the above-described suction port 2, discharge port 3, venturi pipe 12 (12a, 12b) and the like are incorporated into the discharge nozzle 30 as a unit. ing.

吐出ノズル30には、側面視でL字状のノズルケース31が設けられ、ノズルケース31の内部には、外形状に倣ったL字状の流路31aが形成されて、この流路31aの入口側(縦向き部分)には、前記流出管11がOリング32を介して接続されるとともに、入口側の流路31aには、前記中央1個の上流側ベンチュリ管12aが嵌め込まれている。   The discharge nozzle 30 is provided with an L-shaped nozzle case 31 in a side view, and an L-shaped flow path 31a following the outer shape is formed inside the nozzle case 31. The outlet pipe 11 is connected to the inlet side (vertical portion) via an O-ring 32, and the central upstream venturi pipe 12a is fitted into the inlet-side flow path 31a. .

出口側(横向き部分)の流路31aには、前記複数個の下流側ベンチュリ管12bを形成したノズル本体29がOリング33を介して嵌め込まれている。   A nozzle body 29 in which the plurality of downstream venturi pipes 12b are formed is fitted into an outlet side (laterally directed portion) flow path 31a via an O-ring 33.

ノズル本体29には、図9(a)(b)に詳細に示すように、ノズルケース31の出口側(横向き部分)の流路31aにOリング33を介して嵌め込むための円筒状嵌め込み部29aと、この嵌め込み部29aから前方(吐出方向)に突出する円筒状突出部29bと、この円筒状突出部29bと嵌め込み部29aとの間に板状閉塞部29cとが形成され、この閉塞部29cに、内外2重の同心円が設定され、内側の小径円に沿って、円周上等角度間隔で複数個(本例では、6個)の下流側ベンチュリ管12bが形成され、外側の大径円に沿って、円周上等角度間隔で複数個(本例では10個)の下流側ベンチュリ管12bが形成されている(本例では下流側ベンチュリ管12bが合計16個)。   As shown in detail in FIGS. 9 (a) and 9 (b), the nozzle body 29 has a cylindrical fitting portion for fitting into the outlet side (lateral portion) of the nozzle case 31 via the O-ring 33. 29a, a cylindrical protruding portion 29b protruding forward (discharge direction) from the fitting portion 29a, and a plate-like blocking portion 29c formed between the cylindrical protruding portion 29b and the fitting portion 29a. The inner and outer double concentric circles are set in 29c, and a plurality of (six in this example) downstream venturi tubes 12b are formed at equal circumferential intervals along the inner small-diameter circle. A plurality (10 in this example) of the downstream venturi pipes 12b are formed along the radial circle at equal angular intervals on the circumference (a total of 16 downstream venturi pipes 12b in this example).

図6に戻って、図7を参照すれば、ノズル本体29の突出部29bの内周面には、円筒状吸音シート35が内嵌めされるとともに、この吸音シート35の内周面には、円筒状静音メッシュ(金網体)36が内嵌めされていて、突出部29bの前端部の雄ねじ29dに、円筒状メッシュホルダー37の雌ねじ37aをねじ込むことで、突出部29bに吸音シート35と静音メッシュ36とが移動しないように保持されるようになる。   Returning to FIG. 6, referring to FIG. 7, a cylindrical sound absorbing sheet 35 is fitted on the inner peripheral surface of the protruding portion 29 b of the nozzle body 29, and on the inner peripheral surface of the sound absorbing sheet 35, A cylindrical silent mesh (metal mesh body) 36 is fitted inside, and the female screw 37a of the cylindrical mesh holder 37 is screwed into the male screw 29d at the front end of the protruding portion 29b, whereby the sound absorbing sheet 35 and the silent mesh are inserted into the protruding portion 29b. 36 is held so as not to move.

浴槽1の側壁1aの取付け穴1bには、側面視でU字状断面のパッキン40が嵌め込まれ、浴槽1の外側からノズルケース31の出口側(横向き部分)のフランジ部31bをパッキン40に当てがうとともに、浴槽1の内側から円筒状固定フランジ41の後端部の雄ねじ41aをノズルケース31のフランジ部31bの雌ねじ31cにねじ込むことで、固定フランジ41の前端部のフランジ部41bがパッキン40に水密に密着し、ノズルケース31のフランジ部31bがパッキン40に水密に密着するようになる。これにより、ノズルケース31が固定フランジ41で浴槽1の側壁1aに固定状態で取付けられるようになる。   A packing 40 having a U-shaped cross-section is fitted into the mounting hole 1b of the side wall 1a of the bathtub 1 and the flange portion 31b on the outlet side (sideways portion) of the nozzle case 31 is applied to the packing 40 from the outside of the bathtub 1. In addition, the external thread 41a at the rear end portion of the cylindrical fixing flange 41 is screwed into the internal thread 31c of the flange portion 31b of the nozzle case 31 from the inside of the bathtub 1 so that the flange portion 41b at the front end portion of the fixing flange 41 becomes the packing 40. The flange portion 31b of the nozzle case 31 comes into close contact with the packing 40 in a water tight manner. As a result, the nozzle case 31 is fixedly attached to the side wall 1 a of the bathtub 1 with the fixing flange 41.

そして、浴槽1の内側から円筒状ノズルカバー42の後端部の雌ねじ42aを固定フランジ41のフランジ部41bの雄ねじ41cにねじ込むことで、ノズルカバー42が固定フランジ41のフランジ部41bに取付けられるようになる。ノズルカバー42には、前記吐出口3が形成されている。   The nozzle cover 42 is attached to the flange portion 41 b of the fixed flange 41 by screwing the female screw 42 a at the rear end portion of the cylindrical nozzle cover 42 into the male screw 41 c of the flange portion 41 b of the fixed flange 41 from the inside of the bathtub 1. become. The nozzle cover 42 has the discharge port 3 formed therein.

固定フランジ41には、図8に詳細に示すように、メッシュホルダー37の外周面との間を閉塞する板状閉塞部41dが形成され、この閉塞部41dに内外2重の同心円が設定され、内側の小径円に沿って、円周上等角度間隔で多数個の貫通小孔41eが形成され、外側の大径円に沿って、内側の小径円の貫通小孔41eと半ピッチずらせた状態で、円周上等角度間隔で多数個の貫通小孔41eが形成されている。この閉塞部41dの内周面とメッシュホルダー37の外周面との間にパッキン(図示せず)を介在させることで、水密性を向上させることができる。   As shown in detail in FIG. 8, the fixing flange 41 is formed with a plate-like closing portion 41 d that closes the outer periphery of the mesh holder 37, and inner and outer double concentric circles are set in the closing portion 41 d, A large number of through-holes 41e are formed along the inner small-diameter circle at equal angular intervals on the circumference, and are shifted by a half pitch from the inner small-diameter through-hole 41e along the outer large-diameter circle. Thus, a large number of small through holes 41e are formed at equal angular intervals on the circumference. Water-tightness can be improved by interposing a packing (not shown) between the inner peripheral surface of the blocking portion 41 d and the outer peripheral surface of the mesh holder 37.

ノズルカバー42の外周面には、図6に示したように、円周上等角度間隔で複数個の前記吸込口2が形成されている。ノズルカバー42の吸込口2と吐出口3とには、除塵メッシュ(金網体…鎖線参照)43が取付けられている。   On the outer peripheral surface of the nozzle cover 42, as shown in FIG. 6, a plurality of the suction ports 2 are formed at equal angular intervals on the circumference. A dust-removing mesh (metal mesh body ... see chain line) 43 is attached to the suction port 2 and the discharge port 3 of the nozzle cover 42.

前記のように構成した吐出ノズル30であれば、図6に示したように、気体が溶解した湯水は、矢印aのように、流出管11からノズルケース31の流路31aの上流側ベンチュリ管12aと下流側ベンチュリ管12bとを介してノズルカバー42の吐出口3より浴槽1内の浴水中に吐出されることで、浴水中で溶解気体が析出して微細気泡が発生するようになる。   In the case of the discharge nozzle 30 configured as described above, as shown in FIG. 6, the hot and cold water in which the gas is dissolved flows from the outflow pipe 11 to the upstream side venturi pipe 31a of the nozzle case 31 as indicated by an arrow a. By discharging into the bath water in the bathtub 1 from the discharge port 3 of the nozzle cover 42 through 12a and the downstream venturi pipe 12b, dissolved gas precipitates in the bath water and fine bubbles are generated.

また、浴槽1内の浴水は、矢印bのように、ノズルカバー42の吸込口2からノズルケース31内に吸い込まれ、固定フランジ41の閉塞部41dの貫通小孔41eを通って、図5のように、ノズルケース31の外側部に接続された接続管5からポンプ6に吸い込まれるようになる。   Further, the bath water in the bathtub 1 is sucked into the nozzle case 31 from the suction port 2 of the nozzle cover 42 as shown by an arrow b, and passes through the small through hole 41e of the closing portion 41d of the fixing flange 41, as shown in FIG. As described above, the pump 6 is sucked from the connecting pipe 5 connected to the outer side of the nozzle case 31.

前記した吐出ノズル30の構成において、図10に拡大して示すように、ノズル本体29の下流側ベンチュリ管12bの吐出口12cの管路内壁面12dと吐出外端面12eとの交点部分をエッジ12fに形成した場合には、発生した気泡が吐出口12cから噴出する際に、吐出口12cの周辺で渦流cおよびこれに伴う逆流dが発生して(乱流)、吐出された気泡が混合されて合体することで、浴水等の白濁性が悪くなる。   In the configuration of the discharge nozzle 30 described above, as shown in an enlarged view in FIG. 10, the intersection of the inner wall surface 12d of the discharge port 12c and the outer discharge end surface 12e of the downstream venturi tube 12b of the nozzle body 29 is defined as an edge 12f. In this case, when the generated bubbles are ejected from the discharge port 12c, a vortex flow c and a back flow d associated therewith are generated around the discharge port 12c (turbulent flow), and the discharged bubbles are mixed. When combined, the white turbidity of bath water and the like deteriorates.

そこで、図9(c)に拡大して示すように、下流側ベンチュリ管12bの吐出口12cの管路内壁面12dと吐出外端面12eとの交点部分を湾曲面(アール面…吐出口12cから前方へラッパ状に拡径する形状)12gに形成することにより、エッジ12fのような急激な角部が無くなって、吐出口12cの周辺で図10に示したような渦流cおよびこれに伴う逆流dが発生しにくくなり、吐出された気泡が均一に拡散して流れるので、気泡の合体が防止されて、浴水等の白濁性が向上するようになる。   Therefore, as shown in an enlarged view in FIG. 9C, the intersection of the inner wall surface 12d of the discharge port 12c and the outer discharge end surface 12e of the downstream venturi tube 12b is a curved surface (the round surface: from the discharge port 12c). (A shape that expands forward in a trumpet shape) 12g, the sharp corner portion such as the edge 12f is eliminated, and the vortex c as shown in FIG. 10 and the backflow associated therewith around the discharge port 12c. d is less likely to be generated, and the discharged air bubbles are diffused and flowed uniformly, so that the coalescence of the air bubbles is prevented and the white turbidity of the bath water or the like is improved.

図9(c)では、交点部分のみを湾曲面12gに形成して、吐出外端面12eにフラット面が残るようにすることで、隣り合う下流側ベンチュリ管12bの吐出口12cからの気泡と干渉が生じないようにしたが、図9(d)のように、吐出外端面12eにフラット面を残さないで、隣り合う下流側ベンチュリ管12bの吐出口12cに跨がるように、全体を湾曲面(アール面)12gに形成することもできる。   In FIG. 9C, only the intersection portion is formed on the curved surface 12g so that a flat surface remains on the discharge outer end surface 12e, thereby interfering with bubbles from the discharge port 12c of the adjacent downstream venturi tube 12b. However, as shown in FIG. 9 (d), the entire surface is curved so as not to leave a flat surface on the discharge outer end surface 12e and straddle the discharge port 12c of the adjacent downstream venturi pipe 12b. It can also be formed on a surface (R surface) 12 g.

本発明の実施形態に係る気体溶解装置を備えた浴槽装置の基本構成図である。It is a basic lineblock diagram of a bathtub device provided with a gas dissolution device concerning an embodiment of the present invention. 図1の気体溶解装置の斜視図である。It is a perspective view of the gas dissolving apparatus of FIG. 図1の気体溶解装置であり、(a)は断面図、(b)は(a)のI―I線断面図である。1 is a gas dissolving device of FIG. 1, (a) is a cross-sectional view, (b) is a cross-sectional view taken along the line II of (a). 図1のベンチュリ管の断面図である。It is sectional drawing of the venturi pipe | tube of FIG. 本発明の実施形態に係る気体溶解装置を備えた浴槽装置を具体化した斜視図である。It is the perspective view which actualized the bathtub apparatus provided with the gas dissolving apparatus which concerns on embodiment of this invention. 図5の吐出ノズルの断面図である。It is sectional drawing of the discharge nozzle of FIG. ノズル本体、吸音シート、静音メッシュ、メッシュホルダーの分解斜視図である。It is a disassembled perspective view of a nozzle body, a sound absorbing sheet, a silent mesh, and a mesh holder. 固定フランジであり、(a)は正面図、(b)は側面断面図である。It is a fixed flange, (a) is a front view, (b) is a side sectional view. ノズル本体であり、(a)は斜視図、(b)は側面断面図、(c)(d)はそれぞれ下流側ベンチュリ管の交点部分の湾曲面を示す拡大断面図である。It is a nozzle body, (a) is a perspective view, (b) is a side cross-sectional view, and (c) and (d) are enlarged cross-sectional views showing curved surfaces of intersections of downstream venturi tubes, respectively. ノズル本体の下流側ベンチュリ管の交点部分のエッジを示す拡大断面図である。It is an expanded sectional view which shows the edge of the intersection part of the downstream venturi pipe | tube of a nozzle main body.

符号の説明Explanation of symbols

1 浴槽
2 吸込口
3 吐出口
8 気体溶解装置
12a 上流側ベンチュリ管
12b 下流側ベンチュリ管
12c 吐出口
12d 管路内壁面
12e 吐出外端面
12g 湾曲面
29 ノズル本体
30 吐出ノズル
31 ノズルケース
41 固定フランジ
42 ノズルカバー
DESCRIPTION OF SYMBOLS 1 Bathtub 2 Suction port 3 Discharge port 8 Gas dissolution apparatus 12a Upstream venturi tube 12b Downstream venturi tube 12c Discharge port 12d Pipe inner wall surface 12e Discharge outer end surface 12g Curved surface 29 Nozzle body 30 Discharge nozzle 31 Nozzle case 41 Fixed flange 42 Nozzle cover

Claims (2)

液体中に気体が加圧溶解された気液溶解流体を減圧手段で圧力開放して、微細気泡を発生させながら吐出ノズルから噴射吐出させる微細気泡発生装置であって、
前記吐出ノズルに、前記減圧手段である複数個のベンチュリ管が並列で設けられ、各ベンチュリ管の吐出口の管路内壁面と吐出外端面との交点部分が湾曲面に形成されていることを特徴とする微細気泡発生装置。
A gas-liquid dissolving fluid in which a gas is pressurized and dissolved in a liquid is released by a decompression means, and a fine bubble generator that ejects and discharges from a discharge nozzle while generating fine bubbles,
The discharge nozzle is provided with a plurality of venturi pipes as the decompression means in parallel, and the intersection portion between the inner wall surface of the discharge port and the outer discharge end surface of each venturi pipe is formed in a curved surface. A feature of a fine bubble generator.
前記湾曲面は、交点部分にのみ形成して、吐出外端面にフラット面が残るように形成したことを特徴とする請求項1に記載の微細気泡発生装置。   2. The fine bubble generating device according to claim 1, wherein the curved surface is formed only at the intersection portion so that a flat surface remains on the outer surface of the discharge.
JP2006342418A 2006-12-20 2006-12-20 Microbubble generator Active JP4582088B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006342418A JP4582088B2 (en) 2006-12-20 2006-12-20 Microbubble generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006342418A JP4582088B2 (en) 2006-12-20 2006-12-20 Microbubble generator

Publications (2)

Publication Number Publication Date
JP2008149052A JP2008149052A (en) 2008-07-03
JP4582088B2 true JP4582088B2 (en) 2010-11-17

Family

ID=39651899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006342418A Active JP4582088B2 (en) 2006-12-20 2006-12-20 Microbubble generator

Country Status (1)

Country Link
JP (1) JP4582088B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112012020301A2 (en) 2010-03-02 2016-04-26 Acal Energy Ltd device for generating fine bubbles, method for manufacturing a device for generating fine bubbles, method for generating fine bubbles, catholyte regeneration system, and use of the device
GB2484070A (en) * 2010-09-23 2012-04-04 Acal Energy Ltd Fine bubble generation device
JP5788975B2 (en) * 2010-06-09 2015-10-07 ザ プロクター アンド ギャンブルカンパニー Semi-continuous supply production of liquid personal care compositions
KR101450061B1 (en) 2014-06-13 2014-10-13 주식회사 기술환경 Voc oxidation treatment apparatus
WO2021256167A1 (en) * 2020-06-18 2021-12-23 パナソニックIpマネジメント株式会社 Bubble generating device and cleaning system comprising same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0226658A (en) * 1988-07-15 1990-01-29 Matsushita Electric Works Ltd Small air bubble generating nozzle
JPH03229097A (en) * 1990-01-31 1991-10-11 Mitsubishi Heavy Ind Ltd Pressure reducing porous plate
JPH05212083A (en) * 1992-02-10 1993-08-24 Matsushita Electric Ind Co Ltd Bubble water flow generator
JP2001124280A (en) * 1999-10-29 2001-05-11 Yamatake Corp Orifice plate
JP2001152499A (en) * 1999-11-26 2001-06-05 Tanaka Kinzoku Seisakusho:Kk Water-saving adaptor
JP2005155884A (en) * 2003-10-27 2005-06-16 Sumitomo Metal Ind Ltd Orifice body for decompression and valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0226658A (en) * 1988-07-15 1990-01-29 Matsushita Electric Works Ltd Small air bubble generating nozzle
JPH03229097A (en) * 1990-01-31 1991-10-11 Mitsubishi Heavy Ind Ltd Pressure reducing porous plate
JPH05212083A (en) * 1992-02-10 1993-08-24 Matsushita Electric Ind Co Ltd Bubble water flow generator
JP2001124280A (en) * 1999-10-29 2001-05-11 Yamatake Corp Orifice plate
JP2001152499A (en) * 1999-11-26 2001-06-05 Tanaka Kinzoku Seisakusho:Kk Water-saving adaptor
JP2005155884A (en) * 2003-10-27 2005-06-16 Sumitomo Metal Ind Ltd Orifice body for decompression and valve

Also Published As

Publication number Publication date
JP2008149052A (en) 2008-07-03

Similar Documents

Publication Publication Date Title
JP4706664B2 (en) Fine bubble generating apparatus and fine bubble generating method
JP2010075838A (en) Bubble generation nozzle
JP4582088B2 (en) Microbubble generator
JP4933582B2 (en) Microbubble generator and shower head
JP4884693B2 (en) Micro bubble generator
KR20170104351A (en) Apparatus for generating micro bubbles
JP4915602B2 (en) Microbubble generator
JP4678387B2 (en) Microbubble generator
JP4561781B2 (en) Microbubble generator
JP4706665B2 (en) Microbubble generator
JP2007313465A (en) Gas dissolving apparatus
JP4561738B2 (en) Microbubble generator
JP4858327B2 (en) Microbubble generator
JP4938112B2 (en) Microbubble generator
JP4561349B2 (en) Liquid nozzle
JP4872459B2 (en) Gas dissolving device
JP4706669B2 (en) Microbubble generator
JP4858152B2 (en) Microbubble generator
KR102305212B1 (en) Bubble generator
JP2008289993A (en) Bubble generator
JP2008149038A (en) Microbubble generator
JP4919289B2 (en) Microbubble generator
JP4830867B2 (en) Microbubble generator
JP2007216149A (en) Micro-foam production apparatus
JP2005087985A (en) Foam water generator

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20081121

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100427

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100803

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100816

R150 Certificate of patent or registration of utility model

Ref document number: 4582088

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130910

Year of fee payment: 3