JP2766604B2 - Bubble separation device - Google Patents
Bubble separation deviceInfo
- Publication number
- JP2766604B2 JP2766604B2 JP5190440A JP19044093A JP2766604B2 JP 2766604 B2 JP2766604 B2 JP 2766604B2 JP 5190440 A JP5190440 A JP 5190440A JP 19044093 A JP19044093 A JP 19044093A JP 2766604 B2 JP2766604 B2 JP 2766604B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- flow chamber
- swirling flow
- liquid
- swirl flow
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、潤滑油あるいは界面
活性剤やポリマーの含有液、コーティング剤などの液体
を取り扱う系統において、液体に混入した気泡を取り除
くのに使用される気泡分離装置に関し、特に、液体自身
の流れを利用して旋回流を発生させて微細な気泡をも分
離除去する方式の装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble separation apparatus used for removing bubbles mixed in a liquid in a system for handling a liquid such as a lubricant, a surfactant or a polymer-containing liquid, and a coating agent. In particular, the present invention relates to an apparatus of a type in which a swirling flow is generated using a flow of a liquid itself to separate and remove fine bubbles.
【０００２】[0002]
【従来の技術】気泡が液体中に微細な形状で分散する
と、液体が本来有する機能を阻害したり、液体の酸化劣
化を促進する要因となることが知られている。2. Description of the Related Art It is known that, when air bubbles are dispersed in a fine shape in a liquid, the function of the liquid inherently is hindered and the oxidative deterioration of the liquid is promoted.
【０００３】例えば、エンジン、タービン、油圧機器な
どの高回転化、高出力化に伴い、エンジン油、タービン
油、油圧作動油などの潤滑油中には撹伴、循環または急
激な圧力変動などによって多量の気泡が微細化して混入
する。そして、潤滑油中に混入した多量の微細気泡は、
供給ポンプの振動や異常音の発生、摺動部の摩耗、油圧
低下による作動圧力や作動効率の低下などの原因となる
ほか、潤滑油と微細気泡との接触面積が増大するため、
潤滑油の酸化劣化が促進されてしまう。[0003] For example, as the engine, turbine, hydraulic equipment and the like have been increased in speed and output, lubricating oils such as engine oil, turbine oil, and hydraulic oil have been stirred, circulated or suddenly changed in pressure. A large amount of air bubbles are finely mixed. And a lot of fine bubbles mixed in the lubricating oil,
This causes vibration and abnormal noise of the supply pump, wear of sliding parts, lowering of operating pressure and operating efficiency due to a decrease in oil pressure, and also increases the contact area between lubricating oil and microbubbles.
Oxidation degradation of the lubricating oil is promoted.
【０００４】また、コーティング剤などに多量の微細気
泡が混入すると、コーティング過程において被塗装面に
気泡が付着した部分にコーティング剤が被覆されず、塗
布むらが生じるなどの欠陥が発生する。[0004] When a large amount of fine air bubbles are mixed in a coating agent or the like, a portion where the air bubbles adhere to a surface to be coated is not covered with the coating agent in a coating process, and defects such as uneven application occur.
【０００５】このため、微細気泡を充分に分離除去でき
る装置が必要とされている。Therefore, there is a need for an apparatus capable of sufficiently separating and removing fine bubbles.
【０００６】ところで、従来から用いられている気泡分
離装置の１つの代表的な方式として、ポンプなどで圧送
される液体の流れを利用して旋回流を発生させ、遠心力
により気泡分を旋回流の中心よりに集めて分離するもの
がある。[0006] By the way, as one typical method of the bubble separating apparatus conventionally used, a swirling flow is generated by using a flow of a liquid pumped by a pump or the like, and a bubble is swirled by centrifugal force. Some are collected and separated from the center.
【０００７】この種の気泡分離装置の代表的な構成例を
図１に示している（本出願人らが先に開発した特開平３
−１２３６０５号の装置である）。FIG. 1 shows a typical configuration example of this type of bubble separation apparatus (Japanese Patent Laid-Open Publication No.
No. 123605).
【０００８】図１において、両端が閉じたコーン型の容
器１によって旋回流室２が形成されている。この例では
コーン型容器１は最大径部分を上にして垂直に配設され
ている。容器１の上端の大径部分の外周にはこれを取り
巻く環状管路３が一体的に形成されており、この環状管
路３の一部に液体供給口４が連通連結されている。容器
１の上端部周壁面（環状管路３の内壁面）には多数の開
口５が円周方向に一定間隔をおいて形成されており、ポ
ンプにより液体供給口４から環状管路３に流送されてく
る液体が多数の開口５を通じて容器１内の旋回流室２に
入り込む。In FIG. 1, a swirling flow chamber 2 is formed by a cone-shaped container 1 having both ends closed. In this example, the cone type container 1 is disposed vertically with the maximum diameter portion facing upward. An annular conduit 3 surrounding the large-diameter portion of the upper end of the container 1 is formed integrally with the outer periphery of the large-diameter portion, and a liquid supply port 4 is connected to and connected to a part of the annular conduit 3. A large number of openings 5 are formed at regular intervals in the circumferential direction on the peripheral wall at the upper end of the container 1 (the inner wall surface of the annular conduit 3), and flow from the liquid supply port 4 to the annular conduit 3 by a pump. The liquid to be sent enters the swirling flow chamber 2 in the container 1 through the many openings 5.
【０００９】容器１の中央から下端部にかけての周壁面
には容器内外を貫通する多数の小穴６が形成されてい
る。これら小穴６を通じて容器１内から流出してくる液
体を集めて液体排出口７に導くように、容器１を包み込
む円筒型の外ケース８が容器１や環状管路３と一体的に
設けられている。A large number of small holes 6 penetrating the inside and outside of the container are formed on the peripheral wall surface from the center to the lower end of the container 1. A cylindrical outer case 8 surrounding the container 1 is provided integrally with the container 1 and the annular conduit 3 so as to collect the liquid flowing out of the container 1 through the small holes 6 and to guide the liquid to the liquid outlet 7. I have.
【００１０】また容器１内の旋回流室２にはその中心軸
に沿って中心細管９が配設されている。この中心細管９
には管内外を貫通する多数の小穴１０が形成されてい
る。中心細管９の下端側は容器１と外ケース８を貫通し
て外部に延長されており、旋回流室２から小穴１０を通
じて中心細管９内に入り込む気泡分を細管９の下方突出
部の気泡排出口１１に導く。In the swirling flow chamber 2 in the container 1, a central thin tube 9 is provided along the central axis. This central capillary 9
Are formed with a number of small holes 10 penetrating inside and outside the pipe. The lower end of the central capillary 9 extends to the outside through the container 1 and the outer case 8, and the air bubbles that enter the central capillary 9 from the swirling flow chamber 2 through the small holes 10 are discharged from the downward projecting portion of the capillary 9. Lead to Exit 11.
【００１１】前記環状管路３と旋回流室２とを連通する
多数の開口５は、環状管路３を流れる液体が旋回流室２
内に接線方向に流入するように、容器１の上端部にプレ
ス加工による切口を設け、この切口を旋回流室２内に押
し込んだ形で形成されている。A large number of openings 5 communicating the annular flow path 3 with the swirl flow chamber 2 allow the liquid flowing through the annular flow path 3 to pass through the swirl flow chamber 2.
A cut is formed at the upper end of the container 1 by press working so as to flow into the container tangentially, and the cut is pushed into the swirl flow chamber 2.
【００１２】そして、液体供給口４から環状管路３を経
由して導入された液体は、多数の開口５から旋回流室２
内に接線方向に流入し、旋回流となる。よく知られてい
るように、液体に混入している気泡分は旋回流の中心よ
りに集り、小さな気泡群が合体してより大きな気泡とな
る。また、旋回流の外周よりは気泡分をほとんど含まな
い液体の流れとなり、コーン型容器１の内面に沿って旋
回しながら下方へと流れ、容器１の多数の小穴６から容
器外に流出し、液体排出口７に導かれる。一方、旋回流
の中心よりに集って合体した気泡分は多数の小穴１０か
ら中心細管９内に入り込み、気泡排出口１１に導かれ
る。Then, the liquid introduced from the liquid supply port 4 via the annular conduit 3 flows through the plurality of openings 5 through the swirling flow chamber 2.
Flows tangentially into the inside and forms a swirling flow. As is well known, bubbles mixed in the liquid gather at the center of the swirling flow, and small bubbles are united into larger bubbles. Further, the liquid flow becomes almost free of bubbles from the outer periphery of the swirling flow, flows downward while swirling along the inner surface of the cone-shaped container 1, and flows out of the container 1 through the many small holes 6 of the container 1, The liquid is led to the liquid outlet 7. On the other hand, the bubbles that have gathered and coalesced from the center of the swirling flow enter the central narrow tube 9 from the large number of small holes 10 and are guided to the bubble discharge port 11.
【００１３】[0013]
【発明が解決しようとする課題】以上詳述した従来の気
泡分離装置（図１）では、液体供給口４と環状管路３の
接続には特別な注意が払われておらず、また、開口５は
環状管路３に沿って多数が配設されているため、環状管
路３に導入された気泡を含む液体はこの環状管路３内で
はほとんど旋回流とならず、乱流のまま開口５に至る。
本発明者の知見によれば、旋回流室２における気泡の分
離除去は気泡が大きいほど効率が高くなるが、上記の環
状管路３内では乱流のために微細な気泡の合体は起こら
ず、専ら旋回流室２内での旋回流に依存していた。ま
た、前記開口５の形状による旋回流の惹起能力はあまり
高くなく、強力な旋回流を引き起こすことができなかっ
た。In the conventional bubble separation device (FIG. 1) described in detail above, no special attention is paid to the connection between the liquid supply port 4 and the annular conduit 3, and the opening is not limited. 5 is arranged along the annular pipe 3, the liquid containing bubbles introduced into the annular pipe 3 hardly forms a swirling flow in the annular pipe 3, and the liquid containing the bubbles is opened as a turbulent flow. Reaches 5.
According to the knowledge of the present inventor, the efficiency of separation and removal of bubbles in the swirling flow chamber 2 increases as the size of the bubbles increases. However, coalescence of fine bubbles does not occur in the annular pipe 3 due to turbulence. In the swirling flow chamber 2. Further, the ability of the opening 5 to generate a swirling flow due to the shape of the opening 5 was not so high, and a strong swirling flow could not be induced.
【００１４】そのため、微細な気泡を旋回流室２で十分
に分離除去することができず、高い気泡分離能力を実現
することができなかった。For this reason, fine bubbles cannot be sufficiently separated and removed in the swirling flow chamber 2, and a high bubble separation ability cannot be realized.
【００１５】本発明者は、予めかつ微細な気泡を合体さ
せて大きくし、かつ液体の流れを層流にしておけば、旋
回流室における気泡分離能力を向上させ得ることに着目
して本発明を完成したもので、その目的は、特に構造を
複雑にすることなしに、液体を旋回流室に導入する前に
微細気泡を合体させて大きな気泡とするとともに、液体
を層流の状態で旋回流室に導くことにより、微細な気泡
をも含めた気泡分離能力を向上させることのできる装置
を提供することにある。The inventor of the present invention pays attention to the fact that the bubble separation ability in the swirling flow chamber can be improved if the size of the liquid is made laminar by combining small bubbles in advance and making the liquid flow laminar. The purpose of this method is to combine small bubbles before introducing the liquid into the swirling flow chamber to form large bubbles and to swirl the liquid in a laminar flow without complicating the structure. It is an object of the present invention to provide an apparatus capable of improving the bubble separation ability including fine bubbles by leading the bubbles to a flow chamber.
【００１６】[0016]
【課題を解決するための手段】そこでこの発明では、以
下の構成要件〜を備えた気泡分離装置とした。 中心軸に直交する断面が円形で、中心軸方向に充分な
長さを有し、両端部が閉じた旋回流室容器を有する。 前記容器内の旋回流室の一端側の内径が大きくて、他
端側の周壁面には前記容器内外を貫通する多数の小穴が
形成されている。 前記容器内の旋回流室から前記小穴を通じて流出して
くる液体を所定の液体排出経路に導くケース構造があ
る。 前記容器内の旋回流室にはその中心軸に沿って中心細
管が配設されている。 前記中心細管には管内外を貫通する多数の小穴が形成
されていて、これら小穴を通じて前記容器内の旋回流室
から前記中心細管内に入り込む気泡分を前記容器外に導
く連通構造がある。 前記容器の一端側の大径部分の外周を少なくとも一周
近く取り巻くように開環状予備旋回流路が形成されてい
る。 前記開環状予備旋回流路の一端部は液体供給経路につ
ながり、他端部は前記容器の一端側の大径部分の周壁面
に形成された単一の開口を通じて前記旋回流室につなが
っている。 前記液体供給経路は、該液体供給経路から前記開環状
予備旋回流路内にその周壁面の接線方向に液体が流入す
るように設けられている。 前記開環状子備旋回流路の他端部と前記旋回流室とを
連通する前記開口部分には、前記開環状予備旋回流路側
から前記旋回流室内にその周壁面の接線方向に液体が流
入するようにガイドが形成されている。Accordingly, in the present invention, there is provided a bubble separating apparatus having the following constitutional requirements. A swirling flow chamber container having a circular cross section perpendicular to the central axis, having a sufficient length in the central axis direction, and having both ends closed. The swirling flow chamber in the container has a large inner diameter at one end, and a number of small holes penetrating the inside and outside of the container are formed on the peripheral wall at the other end. There is a case structure for guiding the liquid flowing out of the swirl flow chamber in the container through the small hole to a predetermined liquid discharge path. The swirling flow chamber in the container is provided with a central thin tube along a central axis thereof. A plurality of small holes penetrating the inside and outside of the tube are formed in the center capillary, and there is a communication structure through which bubbles that enter the center capillary from the swirling flow chamber in the container through the small holes to the outside of the container. An open- circular preliminary swirling flow path is formed so as to surround at least one circumference of the outer circumference of the large-diameter portion on one end side of the container. One end of the open annular preliminary swirling flow path is connected to a liquid supply path, and the other end is connected to the swirling flow chamber through a single opening formed in a peripheral wall of a large diameter portion on one end side of the container. . The liquid supply path is provided such that liquid flows from the liquid supply path into the open annular preliminary swirl flow path in a tangential direction of a peripheral wall surface thereof. Wherein the said opening portion for communicating the swirl flow chamber and the other end portion of the open Kanjoko備旋whirling path, the liquid flows from said open annular preliminary vortical flow path side in the tangential direction of the peripheral wall into the swirl flow chamber The guide is formed so that
【００１７】[0017]
【作用】前記液体供給経路から前記開環状子備旋回流路
内へ、それら両者の接続点での当該開環状予備旋回流路
の接線方向に沿って流入した液体は、当該開環状予備旋
回流路の他端部まで旋回流となって流れる。液体中の微
細気泡は旋回運動によって生じる遠心力により、当該予
備旋回流路の内周部方向へ集合しながら合一・合体を繰
り返して次第に大きな気泡となる。一方、気泡をほとん
ど含まない密度の大きい液体は、当該予備旋回流路の外
周部方向に集まる。当該予備旋回流路は旋回流室容器の
外周を少なくとも一周近く取り巻いているので、大径化
した気泡を含む液体と気泡をほとんど含まない液体と
は、当該予備旋回流路を一端から他端まで流れる間に既
に層流状態になる。その後、更に前記旋回流室へ、同旋
回流室の周壁面の接線方向に案内されるとともに単一の
開口を通じて流入させられるため、旋回流室内に引き継
がれる前後でも層流の乱れが小さく、従って全体を通じ
て気泡分離が十分になされる。SUMMARY OF] to the open Kanjoko備旋circumfluence path from the liquid supply path, the open circular preliminary vortical flow passage at their both connection points
The liquid which has flowed along the tangential direction of the open circular pre-handed
A swirling flow flows to the other end of the circulation channel . The fine bubbles in the liquid a centrifugal force generated by orbiting motion, becomes increasingly large bubbles repeat coalescence, coalescence while set to the inner periphery direction of the pre <br/>備旋circumfluence path. On the other hand, large liquid density containing little bubbles gather in the outer peripheral portion direction of the pre-swirl channel. Since the pre-swirling flow path surrounds close at least around the periphery of the swirling flow chamber container, the containing almost no liquid liquid and bubbles containing air bubbles larger diameter, to the other end of the pre-swirl channel from one end Already flowing
A laminar flow occurs. After that, the swirling flow chamber is further co-rotated.
It is guided in the tangential direction of the peripheral wall of the
Flowed into the swirl chamber due to flow through the opening
Laminar turbulence is small before and after the flow,
Bubble separation Te is made sufficient.
【００１８】[0018]
【実施例】図２と図３にこの発明の一実施例による気泡
分離装置の構成を示している。この実施例の図面におい
て、図１の従来装置と同一または対応する構成要素には
図１と同一の符号を付している。2 and 3 show the construction of a bubble separating apparatus according to one embodiment of the present invention. In the drawings of this embodiment, components that are the same as or correspond to those of the conventional device of FIG. 1 are denoted by the same reference numerals as in FIG.
【００１９】図２および図３に示すように、両端が閉じ
たコーン型の容器１によって旋回流室２が形成されてい
る。この例ではコーン型容器１は最大径部分を下にして
垂直に配設されている。容器１の下端の最大径部分の外
周にはこれを取り巻く環状予備旋回流路１２が一体的に
形成されており、この環状予備旋回流路１２の一端部に
液体供給口４が流路１２の周壁面の接線方向に連通連結
されている。As shown in FIG. 2 and FIG. 3, a swirling flow chamber 2 is formed by a cone-shaped container 1 having both ends closed. In this example, the cone-shaped container 1 is vertically disposed with the largest diameter portion facing downward. An annular preliminary swirling flow path 12 surrounding the largest diameter portion at the lower end of the container 1 is formed integrally therewith. A liquid supply port 4 is formed at one end of the annular preliminary swirling flow path 12 in the flow path 12. It is connected and connected in the tangential direction of the peripheral wall surface.
【００２０】環状予備旋回流路１２は図３のように容器
１の外周をほぼ一周するように形成されている。環状予
備旋回流路１２の一端部には液体供給口４が連結されて
いるが、この連結点に近接する他端部との間にはガイド
１３が配設されており、ガイド１３の至近位置において
環状予備旋回流路１２の他端部と旋回流室２を連通する
ように容器１の周壁面に単一の開口１４が形成されてい
る。ガイド１３の端面は開口１４を介して容器１の内周
面のほぼ接線方向の面となっている。As shown in FIG. 3 , the annular preliminary swirl flow path 12 is formed so as to make substantially one round around the outer periphery of the container 1. The liquid supply port 4 is connected to one end of the annular preliminary swirling flow path 12, and a guide 13 is provided between the liquid supply port 4 and the other end close to the connection point. A single opening 14 is formed in the peripheral wall surface of the container 1 so as to communicate the other end of the annular preliminary swirl channel 12 with the swirl flow chamber 2. The end face of the guide 13 is substantially a tangential surface of the inner peripheral surface of the container 1 via the opening 14.
【００２１】また、容器１の中央から上端部にかけての
周壁面には容器内外を貫通する多数の小穴６が形成され
ている。これら小穴６を通じて容器１内から流出してく
る液体を集めて液体排出口７に導くように、容器１を包
み込む円筒型の外ケース８が容器１や環状予備旋回流路
１２と一体的に設けられている。A large number of small holes 6 penetrating inside and outside the container are formed on the peripheral wall surface from the center to the upper end of the container 1. A cylindrical outer case 8 surrounding the container 1 is provided integrally with the container 1 and the annular preliminary swirl flow path 12 so as to collect the liquid flowing out of the container 1 through the small holes 6 and guide the liquid to the liquid discharge port 7. Have been.
【００２２】さらに、容器１内の旋回流室２にはその中
心軸に沿って中心細管９が配設されている。この中心細
管９には管内外を貫通する多数の小穴１０が形成されて
いる。中心細管９の下端側は容器１の底部中心を貫通す
る気泡排出口１１につながっており、旋回流室２から小
穴１０を通じて中心細管９内に入り込む気泡分を中心細
管９の下方の気泡排出口１１に導く。The swirl flow chamber 2 in the vessel 1 is provided with a central thin tube 9 along its central axis. A number of small holes 10 penetrating inside and outside the tube are formed in the central thin tube 9. The lower end of the central capillary 9 is connected to a bubble outlet 11 penetrating through the center of the bottom of the container 1, and the air bubbles entering the central capillary 9 from the swirling flow chamber 2 through the small holes 10 are discharged from the bubble outlet below the central capillary 9. Lead to 11.
【００２３】以上の構成において、ポンプなどにより液
体供給口４に微細気泡を含んだ液体が圧送されてくる
と、その液体は供給口４から環状予備旋回流路１２内に
接線方向に流入し、旋回流となって予備旋回流路１２を
一端部から他端部へと流れ、容器１の外周をほぼ一周す
る。In the above configuration, when a liquid containing fine bubbles is pressure-fed to the liquid supply port 4 by a pump or the like, the liquid flows tangentially into the annular preliminary swirl channel 12 from the supply port 4, As a swirling flow, it flows through the preliminary swirling flow path 12 from one end to the other end, and substantially goes around the outer circumference of the container 1.
【００２４】この旋回運動によって生じる遠心力によ
り、液体中の微細気泡は環状予備旋回流路１２の内周部
方向に集合しながら合一・合体を繰り返して次第に大き
な気泡となる。また、気泡をほとんど含まない密度の大
きな液体は、環状予備旋回流路１２の外周部方向に集合
する。そして、環状予備旋回流路１２の他端部まで流れ
る間に液体は層流状態となり、この層流状態を維持した
ままガイド１３と開口１４の形成位置から容器１内に接
線方向に流入して、旋回加速度を減ずることなく強い旋
回流を引き起こす。Due to the centrifugal force generated by this swirling motion, the fine bubbles in the liquid repeatedly coalesce and coalesce while gathering in the direction of the inner peripheral portion of the annular preliminary swirling flow path 12 to become gradually larger bubbles. Further, the liquid having a high density and containing almost no air bubbles gathers in the outer peripheral direction of the annular preliminary swirl flow path 12. The liquid is in a laminar flow state while flowing to the other end of the annular preliminary swirling flow path 12, and flows tangentially into the container 1 from the position where the guide 13 and the opening 14 are formed while maintaining the laminar flow state. This causes a strong swirling flow without reducing the turning acceleration.
【００２５】環状予備旋回流路１２において合体して大
きくなった気泡は、旋回流室２の内部で旋回流の中心よ
りに集まり、さらに合体しながらより大きな気泡に成長
する。Bubbles that have become larger in the swirl flow path 2 due to the merger gather at the center of the swirling flow inside the swirl flow chamber 2 and grow into larger bubbles while further merging.
【００２６】また、旋回流の外周よりは気泡分をほとん
ど含まない液体の流れとなり、コーン型容器１の内面に
沿って旋回しながら上方へと流れ、容器１の多数の小穴
６から容器外に流出し、液体排出口７に導かれる。一
方、旋回流の中心よりに集って合体した気泡分は多数の
小穴１０から中心細管９内に入り込み、気泡排出口１１
に導かれる。Further, the liquid flow contains almost no air bubbles from the outer circumference of the swirling flow, flows upward while swirling along the inner surface of the cone-shaped container 1, and flows out of the small hole 6 of the container 1 out of the container. It flows out and is led to the liquid outlet 7. On the other hand, the air bubbles collected from the center of the swirling flow and coalesced enter the central narrow tube 9 through a number of small holes 10 and are discharged from the air outlet 11.
It is led to.
【００２７】以上説明した本実施例の装置と図１の従来
装置とについて、次のような性能比較実験を行った。油
圧作動油が入ったタンクに微細ノズルから高圧空気を噴
出して高速攪拌することにより、粒径が約１００μｍの
微細気泡を混入させ、気泡含有量を約１０容量％に調整
した。そのように気泡を含ませた油圧作動油をポンプに
より圧送し、本発明装置と従来装置にそれぞれ供給し、
どの程度気泡が除去されたかを計測した。気泡除去率は
次式により計算した。なお、気泡含有量の計測には特開
平４−１７２２３０号に開示された装置を用いた。The following performance comparison experiment was performed on the apparatus of the present embodiment described above and the conventional apparatus of FIG. By blowing high-pressure air from a fine nozzle into a tank containing hydraulic oil and stirring at high speed, fine bubbles having a particle size of about 100 μm were mixed in, and the bubble content was adjusted to about 10% by volume. The hydraulic oil containing such bubbles is pumped by a pump and supplied to the device of the present invention and the conventional device, respectively.
The extent to which bubbles were removed was measured. The bubble removal rate was calculated by the following equation. The apparatus disclosed in JP-A-4-172230 was used for measuring the bubble content.
【００２８】 実験の結果は次の表の通りであり、本発明装置の方が格
段に優れた気泡除去率を示した。[0028] The results of the experiment are shown in the following table, and the apparatus of the present invention showed a much better air bubble removal rate.
【００２９】[0029]
【表１】 また、表１の排出油を油圧装置に供給して油圧装置内で
発生する油圧を計測し、油圧作動油中の気泡が油圧に及
ぼす影響を調べた。なお、油圧の測定は、油圧装置に内
蔵している高圧ポンプの吐出側で行った。[Table 1] Further, the discharged oil shown in Table 1 was supplied to the hydraulic device, and the hydraulic pressure generated in the hydraulic device was measured, and the effect of bubbles in the hydraulic oil on the hydraulic pressure was examined. The measurement of the hydraulic pressure was performed on the discharge side of a high-pressure pump built in the hydraulic device.
【００３０】実験の結果、本発明装置からの排出油を供
給した場合の油圧は１０４kgf/cm2であり、従来装置か
らの排出油を供給した場合のそれは１０１kgf/cm2 であ
った。また、気泡分離装置を用いなかった場合の油圧作
動油（気泡含有量は約１０％）の油圧は９２kgf/cm2 で
あった。As a result of the experiment, the oil pressure when the oil discharged from the apparatus of the present invention was supplied was 104 kgf / cm 2 , and that when the oil discharged from the conventional apparatus was supplied was 101 kgf / cm 2 . The hydraulic pressure of the hydraulic oil (bubble content was about 10%) when the bubble separator was not used was 92 kgf / cm 2 .
【００３１】この結果から、気泡含有量が少ないほど、
即ち気泡除去率が高いほど、発生する油圧も高くなり、
油圧装置の作動効率が向上することが分かる。From these results, it was found that the smaller the bubble content,
In other words, the higher the bubble removal rate, the higher the generated hydraulic pressure,
It can be seen that the operating efficiency of the hydraulic device is improved.
【００３２】ところで図４には本発明の装置の具体的な
構造例を示している。この例では、装置全体をＹ−Ｙ線
の部分で上下に２分割し、両者をボルト４０で締結して
いる。このように装置を分解式に構成すれば、簡単に分
解して内部を清掃することができる。FIG. 4 shows a specific example of the structure of the device of the present invention. In this example, the entire apparatus is vertically divided into two parts by the line YY, and both parts are fastened with bolts 40. If the device is constructed in a disassembled manner in this way, it can be easily disassembled and the inside cleaned.
【００３３】[0033]
【発明の効果】以上詳細に説明したように、この発明の
気泡分離装置では、液体供給経路を環状予備旋回流路に
対して接線方向に接続し、旋回流室容器を少なくとも一
周近く取り巻くように環状予備旋回流路を配設したの
で、環状予備旋回流路を流れる間に液体中の気泡は合体
して次第に大きくなるとともに、液体は旋回流室内の旋
回流と同心の層流となり、層流のまま旋回流室内に接線
方向に流入して強い旋回流を引き起こす。その結果、気
泡分離能力を向上させることができ、多量の微細気泡が
含有されることに伴う種々の問題を回避することができ
る。As described above in detail, in the bubble separation device of the present invention, the liquid supply path is connected tangentially to the annular preliminary swirl flow path so as to surround the swirl flow chamber container at least one circumference. Since the annular preliminary swirl flow path is provided, bubbles in the liquid coalesce and gradually increase while flowing through the annular preliminary swirl flow path, and the liquid becomes a laminar flow concentric with the swirl flow in the swirl flow chamber. As it flows tangentially into the swirling flow chamber, a strong swirling flow is caused. As a result, the bubble separation ability can be improved, and various problems associated with the inclusion of a large amount of fine bubbles can be avoided.
【図１】従来の気泡分離装置の正断面図である。FIG. 1 is a front sectional view of a conventional bubble separation device.
【図２】この発明の一実施例による気泡分離装置の正断
面図である。FIG. 2 is a front sectional view of a bubble separation device according to one embodiment of the present invention.
【図３】同上実施例装置のＸ−Ｘ線における平断面図で
ある。FIG. 3 is a plan sectional view of the apparatus of the embodiment taken along line XX.
【図４】本発明の他の実施例装置の正断面図である。FIG. 4 is a front sectional view of a device according to another embodiment of the present invention.
１ 容器 ２ 旋回流室 ３ 環状管路 ４ 液体供給口 ５ 開口（従来） ６ 小穴 ７ 液体排出口 ８ 外ケース ９ 中心細管 １０ 小穴 １１ 気泡排出口 １２ 環状予備旋回流路 １３ ガイド １４ 開口 ４０ ボルト DESCRIPTION OF SYMBOLS 1 Container 2 Swirling flow chamber 3 Annular conduit 4 Liquid supply port 5 Opening (conventional) 6 Small hole 7 Liquid outlet 8 Outer case 9 Center narrow tube 10 Small hole 11 Bubble outlet 12 Annular preliminary swirl flow path 13 Guide 14 Opening 40 bolt
Claims (1)
離装置。 中心軸に直交する断面が円形で、中心軸方向に充分な
長さを有し、両端部が閉じた旋回流室容器を有する。 前記容器内の旋回流室の一端側の内径が大きくて、他
端側の周壁面には前記容器内外を貫通する多数の小穴が
形成されている。 前記容器内の旋回流室から前記小穴を通じて流出して
くる液体を所定の液体排出経路に導くケース構造があ
る。 前記容器内の旋回流室にはその中心軸に沿って中心細
管が配設されている。 前記中心細管には管内外を貫通する多数の小穴が形成
されていて、これら小穴を通じて前記容器内の旋回流室
から前記中心細管内に入り込む気泡分を前記容器外に導
く連通構造がある。 前記容器の一端側の大径部分の外周を少なくとも一周
近く取り巻くように開環状予備旋回流路が形成されてい
る。 前記開環状予備旋回流路の一端部は液体供給経路につ
ながり、他端部は前記容器の一端側の大径部分の周壁面
に形成された単一の開口を通じて前記旋回流室につなが
っている。 前記液体供給経路は、該液体供給経路から前記開環状
予備旋回流路内にその周壁面の接線方向に液体が流入す
るように設けられている。 前記開環状予備旋回流路の他端部と前記旋回流室とを
連通する前記開口部分には、前記開環状予備旋回流路側
から前記旋回流室内にその周壁面の接線方向に液体が流
入するようにガイドが形成されている。1. An air bubble separation device having the following components: A swirling flow chamber container having a circular cross section perpendicular to the central axis, having a sufficient length in the central axis direction, and having both ends closed. The swirling flow chamber in the container has a large inner diameter at one end, and a number of small holes penetrating the inside and outside of the container are formed on the peripheral wall at the other end. There is a case structure for guiding the liquid flowing out of the swirl flow chamber in the container through the small hole to a predetermined liquid discharge path. The swirling flow chamber in the container is provided with a central thin tube along a central axis thereof. A plurality of small holes penetrating the inside and outside of the tube are formed in the center capillary, and there is a communication structure through which bubbles that enter the center capillary from the swirling flow chamber in the container through the small holes to the outside of the container. An open-circular preliminary swirling flow path is formed so as to surround at least one circumference of the outer circumference of the large-diameter portion on one end side of the container. One end of the open annular preliminary swirling flow path is connected to a liquid supply path, and the other end is connected to the swirling flow chamber through a single opening formed in a peripheral wall of a large diameter portion on one end side of the container. . The liquid supply path is provided such that liquid flows from the liquid supply path into the open annular preliminary swirl flow path in a tangential direction of a peripheral wall surface thereof. The liquid flows into the swirl flow chamber from the side of the open preliminary swirl flow path into the swirl flow chamber in the tangential direction of the peripheral wall surface into the opening communicating the other end of the open annular preliminary swirl flow path with the swirl flow chamber. Guide is formed as described above.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5190440A JP2766604B2 (en) | 1993-07-30 | 1993-07-30 | Bubble separation device |
| US08/280,941 US5510019A (en) | 1993-07-30 | 1994-07-27 | Bubble separating apparatus |
| CA002128968A CA2128968C (en) | 1993-07-30 | 1994-07-27 | Bubble separating apparatus |
| DE69409067T DE69409067T2 (en) | 1993-07-30 | 1994-07-29 | Device for degassing liquids |
| EP94305632A EP0654292B1 (en) | 1993-07-30 | 1994-07-29 | Bubble separating apparatus |
| KR1019940018572A KR0168897B1 (en) | 1993-07-30 | 1994-07-29 | Bubble separating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5190440A JP2766604B2 (en) | 1993-07-30 | 1993-07-30 | Bubble separation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0739702A JPH0739702A (en) | 1995-02-10 |
| JP2766604B2 true JP2766604B2 (en) | 1998-06-18 |
Family
ID=16258175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5190440A Expired - Lifetime JP2766604B2 (en) | 1993-07-30 | 1993-07-30 | Bubble separation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2766604B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4009566B2 (en) * | 2003-07-28 | 2007-11-14 | 東京電力株式会社 | Dissolved oxygen reduction device |
| JP4178122B2 (en) * | 2004-03-26 | 2008-11-12 | 株式会社日立ハイテクノロジーズ | Dispensing device and automatic analyzer equipped with the same |
| JP2006160977A (en) * | 2004-12-10 | 2006-06-22 | Mitsui Eng & Shipbuild Co Ltd | Method and system for splitting natural gas hydrate |
| JP4967685B2 (en) | 2007-01-25 | 2012-07-04 | トヨタ紡織株式会社 | Bubble separator |
| JP7339883B2 (en) * | 2019-12-27 | 2023-09-06 | Ｋｙｂ株式会社 | Air bubble content adjustment system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0751204B2 (en) * | 1989-10-06 | 1995-06-05 | 三菱石油株式会社 | Air bubble separation device in liquid |
| JP3261506B2 (en) * | 1991-04-03 | 2002-03-04 | 株式会社オーパス | Device for removing bubbles in liquid |
-
1993
- 1993-07-30 JP JP5190440A patent/JP2766604B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0739702A (en) | 1995-02-10 |
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