JPH02174925A - Bubbling device - Google Patents
Bubbling deviceInfo
- Publication number
- JPH02174925A JPH02174925A JP33236188A JP33236188A JPH02174925A JP H02174925 A JPH02174925 A JP H02174925A JP 33236188 A JP33236188 A JP 33236188A JP 33236188 A JP33236188 A JP 33236188A JP H02174925 A JPH02174925 A JP H02174925A
- Authority
- JP
- Japan
- Prior art keywords
- porous membrane
- gas discharge
- gas
- bubbles
- cylindrical part
- 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.)
- Pending
Links
- 230000005587 bubbling Effects 0.000 title 1
- 239000012528 membrane Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000013535 sea water Substances 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 36
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 28
- 229910002092 carbon dioxide Inorganic materials 0.000 description 14
- 239000001569 carbon dioxide Substances 0.000 description 14
- 239000011148 porous material Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は炭酸ガスを水圧に抗して水中又は海水中に放散
溶解させる散気装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an aeration device that diffuses and dissolves carbon dioxide gas into water or seawater against water pressure.
［従来の技術とその１ｌＩ１題］
有人潜水船などに於いて、船内で発生した炭酸ガスを水
中又は海中で船外に排出するに際しては、水圧に抗して
炭酸ガスを水中又は海水中に放散させる散気装置が一般
に使用されている。[Prior art and its 1lI 1 problem] When discharging carbon dioxide gas generated inside the ship, such as in a manned submersible, into the water or seawater, the carbon dioxide gas is released into the water or seawater against water pressure. Air diffusers are commonly used.
散気装置から放散された炭酸ガスは、気泡となって水中
を上昇するが、上昇に連れて水圧が減少するため気泡は
破裂し、破裂音を発生する。The carbon dioxide gas released from the air diffuser becomes bubbles and rises in the water, but as the bubbles rise, the water pressure decreases, causing the bubbles to burst, producing a popping sound.
気泡の破裂音は有人潜水船にとって一種の騒音であり、
とりわけ音響測定機器を搭載した有人潜水船等に於いて
は、この騒音により音ｗＩｙＩ定に支障を来すことさえ
希ではない。The sound of bursting bubbles is a type of noise for manned submersibles.
Particularly in manned submersibles and the like equipped with acoustic measuring equipment, it is not uncommon for this noise to even interfere with the determination of sound wIyI.
ところで、水中を上昇する気泡はその径が小さければ小
さいほど破裂し難いので、騒音発生を防止するためには
、散気装置は炭酸ガスを微細な気泡として水中に排出で
きるものが好ましい、また、気泡として水中を上昇する
炭酸ガスの水又は海水への溶解速度は、気泡が小さいほ
ど大となるので、この意味からも、散気装置は炭酸ガス
をできるだけ細かい気泡として水中に放出できるもので
あることが好ましい。By the way, the smaller the diameter of bubbles rising in the water, the more difficult they are to burst, so in order to prevent noise generation, it is preferable that the diffuser be one that can discharge carbon dioxide gas into the water as fine bubbles. The dissolution rate of carbon dioxide gas, which rises in the water as bubbles, into water or seawater increases as the bubbles become smaller. From this point of view, an aeration device can release carbon dioxide gas into the water in the form of as fine bubbles as possible. It is preferable.
こうした事情から、従来は第３図に示すごとく、セラミ
ック材料又は焼結合金からなる多孔質膜を、二つ一組の
支持体に挟持させた散気装置が一般に使用されている。Under these circumstances, conventionally, as shown in FIG. 3, an aeration device in which a porous membrane made of a ceramic material or a sintered alloy is sandwiched between a pair of supports has been generally used.
すなわち、この散気装置は多数の細孔を有する多孔質膜
ｌを、バッキング２，２′を介して支持体３．３′に挟
持された構造にあって１図面には多孔質膜１の下方から
導管４を通って供給される炭酸ガスが、多孔質膜１を通
過してその表面から微細な気泡となって水中又は海水中
に放散される状況が示されている。That is, this aeration device has a structure in which a porous membrane 1 having a large number of pores is sandwiched between supports 3 and 3' via backings 2 and 2'. A situation is shown in which carbon dioxide gas supplied from below through the conduit 4 passes through the porous membrane 1 and is dispersed into the water or seawater in the form of fine bubbles from its surface.
しかし、第３図に示すような散気装置では、ガスの流れ
方向から見て多孔質膜１より下流側に位置する支持体２
の開口部周壁先端５に、多孔質膜１から発生した微細な
気泡が付着し易い。However, in the air diffuser as shown in FIG.
Fine bubbles generated from the porous membrane 1 tend to adhere to the tip 5 of the peripheral wall of the opening.
そして、周壁先端気泡かに付着すると、その気泡は後続
の微細気泡と合体して成長し、終には周壁先端から離脱
して水中を上昇するが、径の大きい気泡の発生は、上記
した通り、騒音防止及び溶解速度の観点から望ましくな
い。When the bubble attaches to the tip of the surrounding wall, the bubble merges with the following microbubbles and grows, eventually separating from the tip of the surrounding wall and rising through the water, but the generation of large diameter bubbles is as described above. , which is undesirable from the viewpoint of noise prevention and dissolution rate.
［課題を解決するための手段］
本発明はガス出口側に位置する多孔質膜支持体の開口部
周壁の形状を改良して、当該部分への気泡の付着を防止
した散気′３Ａ置を提供する。[Means for Solving the Problems] The present invention improves the shape of the peripheral wall of the opening of the porous membrane support located on the gas outlet side, and provides an air diffuser '3A that prevents air bubbles from adhering to the part. provide.
すなわち、本発明に係る散気装置は、中央に開口部を有
する支持体に支持された多孔質膜を通して炭酸ガスを水
中又は海水中に放散させる散気装置に於いて、支持体の
ガス吐出側開口部を、筒状部と、この筒状部のガス吐出
側先端からガス吐出方向に拡開した傾斜面とで区画され
る開放領域で構成させ、前記筒状部の多孔質膜表面から
ガス吐出側先端までの高さを２ｆｆｉｆ１１以下とし、
ガス吐出方向に拡開した傾斜面と多孔質膜表面とがなす
角度を５〜８０度としたことを特徴とする。That is, the air diffuser according to the present invention is an air diffuser that diffuses carbon dioxide gas into water or seawater through a porous membrane supported by a support having an opening in the center. The opening is constituted by an open area defined by a cylindrical part and an inclined surface that expands in the gas discharge direction from the gas discharge side tip of the cylindrical part, and the gas is discharged from the porous membrane surface of the cylindrical part. The height to the tip of the discharge side is 2ffif11 or less,
It is characterized in that the angle between the inclined surface expanding in the gas discharge direction and the porous membrane surface is 5 to 80 degrees.
本発明の散気装置に於いては、多孔質膜のガス通過領域
の周縁に、少なくとも０ 、５ｍｍ以上の幅を有するガ
ス遮蔽部を設置することにより。In the air diffuser of the present invention, a gas shielding portion having a width of at least 0.5 mm or more is installed at the periphery of the gas passage area of the porous membrane.
支持体への気泡付着をより拗果的に防止することもでき
る。It is also possible to more effectively prevent air bubbles from adhering to the support.
［作 用］
本発明の装置の一実施例を示す第１図及び第２図にそっ
て１本発明の構成と作用をさらに詳しく説明する。尚、
念のため付言すると、第１図及び第２図では、多孔質膜
が水平に位置するように散気装置を設置した場合を図示
しているが１本発明の装置はこれを要件とするものでは
ないことに留意すべきである。また、図示の具体例では
二つ一組の支持体にて、多孔質膜を挟持させているが、
これに代えて一体構造の支持体にて多孔質膜を支持させ
ることもできる。[Function] The structure and function of the present invention will be explained in more detail with reference to FIGS. 1 and 2 showing an embodiment of the apparatus of the present invention. still,
As a reminder, Figures 1 and 2 illustrate the case where the diffuser is installed so that the porous membrane is positioned horizontally, but the device of the present invention requires this. It should be noted that this is not the case. In addition, in the illustrated example, the porous membrane is sandwiched between two sets of supports.
Alternatively, the porous membrane may be supported by a support having an integral structure.
第１図及び第２図に於いて、多孔質膜１はそれぞれバッ
キング２，２′を介して支持体３゜３′に挟持される。In FIGS. 1 and 2, a porous membrane 1 is sandwiched between supports 3 and 3' via backings 2 and 2', respectively.
そして、図示の例では下方の支持体３′に炭酸ガスの導
管４が接続される。In the illustrated example, a carbon dioxide gas conduit 4 is connected to the lower support 3'.
上方の支持体３はその中央に炭酸ガスの気泡を放散させ
るための開口を有するが、当該開口部は、第１図に示す
の通り、高さｈの筒状部と、その先端から上方に角度θ
で傾斜した面６で区画される開放領域で構成される。こ
こで、筒状部の高さｈは２１１１１１以下、好ましくｌ
ｌ１１１以下であることを可とし、角度θは５〜８０″
、好ましくは１０〜６０°であることを可とする。第２
図では図示を省略したが、第１図の場合と同様、支持体
３の中央開口部は、高さｈの筒状部と、その先端から上
方に角度θで傾斜した面で区画される開放領域からなっ
ている。しかし、第２図の装置では、多孔質膜１のガス
通過領域の周縁に、図示の通り、幅ａのガス遮蔽部７が
設けられており、この点で第１図に示す散気装置と相違
する。ガス遮蔽部７の幅ａは一般に０．５ｍｍ以上であ
ることが好ましい６８はＯリングを示す。The upper support 3 has an opening in its center for dissipating carbon dioxide gas bubbles, and as shown in FIG. Angle θ
It consists of an open area defined by a sloped surface 6. Here, the height h of the cylindrical part is 211111 or less, preferably l
It is allowed to be less than l111, and the angle θ is 5 to 80''
, preferably 10 to 60°. Second
Although not shown in the figure, as in the case of FIG. It consists of areas. However, in the device shown in FIG. 2, a gas shielding portion 7 having a width a is provided at the periphery of the gas passage area of the porous membrane 1, as shown in the figure, and in this respect, it is different from the aeration device shown in FIG. differ. The width a of the gas shielding portion 7 is generally preferably 0.5 mm or more. Reference numeral 68 indicates an O-ring.
第１図及び第２図に示す散気装置に於いて、導管４から
装置内に供給されるガスは、多孔質膜１の多数の細孔を
通過し、その表面から微細な気泡となって水中又は海水
中に放散されるが、本発明の装置ではガス吐出側に位置
する支持体の開［コ部が、ガス吐出側に拡開しているた
め、在来型の装置の如く、ここに気泡が付着することが
なく、多孔質膜から発生した気泡が後続の気泡と合体し
て成長することがない。また、第２図に示す散気装置で
は、多孔質膜のガス通過領域の周縁にガス遮蔽部が設け
られているため、ガス吐出側に位置する支持体の開１丁
１部周壁から距離をおいて気泡を発生させることができ
るので、気泡の支持体への付着をより確実に防止できる
。In the air diffuser shown in FIGS. 1 and 2, gas supplied into the device from the conduit 4 passes through the many pores of the porous membrane 1 and forms fine bubbles from its surface. However, in the device of the present invention, the open part of the support body located on the gas discharge side is expanded toward the gas discharge side, so it is not dissipated here like in conventional devices. There are no air bubbles attached to the porous membrane, and air bubbles generated from the porous membrane do not coalesce with subsequent air bubbles and grow. In addition, in the air diffuser shown in Fig. 2, since the gas shielding part is provided at the periphery of the gas passage area of the porous membrane, the distance from the peripheral wall of each opening of the support body located on the gas discharge side is Since air bubbles can be generated during the process, adhesion of air bubbles to the support can be more reliably prevented.
本発明に於いて、多孔質ＩＩ９としては従来装置と同様
、セラミック材料、焼結合金又は有機高分子材料からな
る多孔質膜が使用１１■能である。In the present invention, as the porous material II9, a porous membrane made of a ceramic material, a sintered alloy, or an organic polymer material can be used as in the conventional apparatus.
支持体に多孔質膜を嵌合させるに当っては、多孔質膜の
嵌合部分に有機高分子物質を含浸又はコーティングして
首くことで、ガスシール性を向」ユさせろことができ、
第２図に示すガス遮蔽部も有機高分子物質の３浸又はコ
ーティングで形成することができる。また、ガス吐出側
に位置する支持体を、ガス吐出側から見た開ＥＪ部形状
は、−射的には円形であるが、必要に応じてこれを四角
形又は多角形とすることができる。When fitting the porous membrane to the support, gas sealing properties can be improved by impregnating or coating the fitting part of the porous membrane with an organic polymer substance.
The gas shield shown in FIG. 2 can also be formed by dipping or coating with an organic polymeric material. Further, the shape of the open EJ portion when the support body located on the gas discharge side is viewed from the gas discharge side is radially circular, but it can be made into a quadrangle or a polygon if necessary.
［発明の効果コ
本発明の散気装置によれば、水圧に抗して炭酸ガスを水
中又は海水中に放出するに際して、多孔質膜から発生す
る微細な気泡が、多孔質膜支持体に付着することがなく
、このため気泡同志の合体に起因する気泡径の成長を防
止することができる。従って、特願昭６２−１５５５７
１号に示されるような平均細孔径５ｏｏｕ以下の多孔質
膜を使用して本発明の散気装置を相み立てることより、
多孔質膜から放出される炭酸ガス気泡を、上昇高さ１ｍ
以内で水中又は海水中に完全溶解させることができる。[Effects of the Invention] According to the air diffuser of the present invention, when carbon dioxide gas is released into water or seawater against water pressure, fine bubbles generated from the porous membrane adhere to the porous membrane support. Therefore, it is possible to prevent the bubble diameter from growing due to coalescence of bubbles. Therefore, patent application No. 62-15557
By combining the aeration device of the present invention with a porous membrane having an average pore diameter of 5 ou or less as shown in No. 1,
Carbon dioxide gas bubbles released from the porous membrane are raised to a height of 1 m.
It can be completely dissolved in water or seawater within 10 minutes.
本発明の散気装置は、典型的には潜水船内に於いて発生
した炭酸ガスを、潜水したまま船外に放出する場合に使
用されるが、この他、例えばバイオリアクターにおいて
、液中に酸素を溶解させる場合の酸素溶解装置としても
使用することができる。The air diffuser of the present invention is typically used to release carbon dioxide gas generated inside a submersible to the outside while the vessel is submerged, but it can also be used, for example, in a bioreactor, to release oxygen gas into the liquid. It can also be used as an oxygen dissolving device when dissolving.
第１図及び第２図はそれぞれ本発明の装置の一具体例を
示す断面図、第２３図は従来の装置の断面図である。
１：多孔質１１Ｌ２，２’：パッキング、３．３’：支
持体、４：ガス導管、６：傾斜面、７：ガス遮蔽部、告
馬３Ｍ
。ｏ、 ’。
”Ｏｓ 、（）ａ1 and 2 are sectional views showing a specific example of the device of the present invention, and FIG. 23 is a sectional view of a conventional device. 1: Porous 11L2, 2': Packing, 3.3': Support, 4: Gas conduit, 6: Inclined surface, 7: Gas shielding part, Keiuma 3M. o,'. ”Os, ()a
Claims (1)
を介してガスを水中又は海水中に放散させる散気装置に
於いて、支持体のガス吐出側開口部を、筒状部と、この
筒状部のガス吐出側先端からガス吐出方向に拡開した傾
斜面とで区画される開放領域で構成させ、前記筒状部の
多孔質膜表面からガス吐出側先端までの高さを２ｍｍ以
下とし、ガス吐出方向に拡開した傾斜面と多孔質膜表面
とがなす角度を５〜８０度としたことを特徴とする前記
の散気装置。 ２、多孔質膜のガス通過領域の周縁に、幅０．５ｍｍ以
上のガス遮蔽部を設けたことを特徴とする請求項１記載
の散気装置。[Claims] 1. In an aeration device that diffuses gas into water or seawater via a porous membrane supported by a support having an opening in the center, an opening on the gas discharge side of the support is composed of an open area defined by a cylindrical part and an inclined surface that expands in the gas discharge direction from the gas discharge side tip of the cylindrical part, and from the porous membrane surface of the cylindrical part to the gas discharge side. The above-mentioned air diffuser, characterized in that the height to the tip is 2 mm or less, and the angle between the inclined surface expanding in the gas discharge direction and the porous membrane surface is 5 to 80 degrees. 2. The air diffuser according to claim 1, further comprising a gas shielding portion having a width of 0.5 mm or more provided at the periphery of the gas passage area of the porous membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33236188A JPH02174925A (en) | 1988-12-28 | 1988-12-28 | Bubbling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33236188A JPH02174925A (en) | 1988-12-28 | 1988-12-28 | Bubbling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02174925A true JPH02174925A (en) | 1990-07-06 |
Family
ID=18254096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33236188A Pending JPH02174925A (en) | 1988-12-28 | 1988-12-28 | Bubbling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02174925A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013523444A (en) * | 2010-04-07 | 2013-06-17 | カクゾー，マレック | Diffuser for saturating water with gas |
| JP2014054615A (en) * | 2012-08-16 | 2014-03-27 | Ihi Corp | Neutralization apparatus, neutralization system, and neutralization method |
-
1988
- 1988-12-28 JP JP33236188A patent/JPH02174925A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013523444A (en) * | 2010-04-07 | 2013-06-17 | カクゾー，マレック | Diffuser for saturating water with gas |
| JP2014054615A (en) * | 2012-08-16 | 2014-03-27 | Ihi Corp | Neutralization apparatus, neutralization system, and neutralization method |
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