US3856483A - Method and device for degassing liquids - Google Patents

Method and device for degassing liquids Download PDF

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Publication number
US3856483A
US3856483A US00291031A US29103172A US3856483A US 3856483 A US3856483 A US 3856483A US 00291031 A US00291031 A US 00291031A US 29103172 A US29103172 A US 29103172A US 3856483 A US3856483 A US 3856483A
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United States
Prior art keywords
liquid
rotor
gas
fraction
bubble content
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Expired - Lifetime
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US00291031A
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English (en)
Inventor
H Rumpf
K Leschonski
Zellerfeld C Thal
H Schubert
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/06—Arrangement of distributors or collectors in centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0021—Degasification of liquids by bringing the liquid in a thin layer
    • B01D19/0026—Degasification of liquids by bringing the liquid in a thin layer in rotating vessels or in vessels containing movable parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S494/00—Imperforate bowl: centrifugal separators
    • Y10S494/90—Imperforate bowl: centrifugal separators involving mixture containing one or more gases

Definitions

  • the invention relates to a method and device for degassing especially viscous or highly viscous liquids in a film flowing along the inner peripheral surface of a centrifuge rotor, and preferably with the use of vacuum.
  • a primary advantage thereof is that only a relatively low overpressure develops in the liquid with respect to the outer pressure of the gas chamber prevailing at the surface of the film. Consequently, only a minimal amount of gas is additionally dissolved in the liquid and has to be liberated again when the degassed liquid is subsequently discharged.
  • degassing centrifuges having relatively high liquid levels such as are known in the patent literature and employed in technical practice, this fact is evidently disregarded, with the disadvantageous consequence, especially, that the fine particles are deprived of the degassing operation due to dissolving and subsequently occurring bubble reformation.
  • the method ofthe invention of the instant application is based on the heretofore known centrifugal separation of gas-bubbles in a liquid film. It has been found, however, that the bubble separation in a liquid film does not have quite the effect anticipated and corresponding to the theory of separation. It was determined, on the contrary, that the liquid which is again collected in the stationary part of the centrifuge may have the identical or sometimes even a higher gasbubble content than that ofthe liquid being supplied to the rotary part of the centrifuge. Consequently, degassing centrifuges with flowing liquid films have not been successful heretofore in actual practice. The negative effect therein results from two phenomena.
  • a method of degassing a liquid flowing in a film along the inner peripheral surface of a rotating centrifuge rotor which comprises dividing the liquid, before it leaves the rotor, into a fraction having a low gas-bubble content and a fraction having a high gasbubble content, and removing the liquid fraction having the low gas bubble content from the rotor in a manner to minimize the addition of further gas-bubbles thereto.
  • the liquid fraction having the low gas-bubble content is removed from the rotor either while simulta' neously avoiding contact of that liquid fraction with gas which forms the bubbles, or after the peripheral speed of that liquid fraction is reduced.
  • the method of the invention indeed foregoes the obvious advantage of heretofore known methods of the general type in that no special measures whatsoever must be met for removing the gas bubbles because they vent through the surface of the liquid into the gas chamber. Due to the great simplicity of such a gas venting or discharge, all of the heretofore known degassing centrifuges therefore operate in this manner, apparently accepting in ignorance of the true relationships, that only relatively large bubbles are removable from the liquid even when vacuum is applied.
  • the separation of relatively fine gas bubbles is, in fact. sought to be effected.
  • a part or fraction of the liquid having gas bubbles accumulated in the surface layer thereof is drained off or dis charged.
  • a major part of the bubbles is separated and the remainder is returned to the degassing film flow.
  • This partial separation is contrast to the draining or discharge of the fraction of the liquid having a low gas-bubble content, is effected with ample success by the impact thereof against a stationary wall in a vacuum. in spite of the additional expense and the greater liquid loading of the film, this method has proven to be advantageous because of the relatively high standard of degassing achieved thereby.
  • the degassing of the liquid is employable with particular success with the use of the aforedescribed method of separation or division or, if it is only a matter of separating relatively large gas bubbles, the foregoing separation method may be dispensed with because, in order to avoid the aforementioned second basic disadvantage of the heretofore known methods, the fraction of the liquid having the low bubble content is withdrawn from the rotor either without coming into contact with gas that forms the bubbles or after previously reducing the peripheral speed thereof.
  • Another possibility for avoiding the admixture of air with the ejected liquid fraction having the low bubble content is that, in accordance with a further feature of the invention, contact with air is avoided altogether.
  • the particular features of the invention for avoiding contact between air and the liquid fraction having the low bubble content is to provide a liquid chamber adjacent the rotor of the degassing centrifuge, the chamber being completely filled with liquid and being adapted to receive therein the liquid fraction having a low bubble content without contact of that liquid fraction with gas forming the bubbles.
  • the liquid chamber and the rotor are mutually sealed by sealing means disposed adjacent the rotor or, for example, by a labyrinth or a groove seal which is soaked or rinsed through from the inside to the outside thereof by liquid.
  • the open end of the centrifuge rotor has a rim which is surrounded by an annular collecting chamber that is adapted to receive therein from the rotor the liquid fraction having the low gas-bubble content, and means for draining the latter from the chamber while simultaneously avoiding contact thereof with gas forming the bubbles.
  • FIG. 1 is a diagrammatic vertical sectional view of a degassing centrifuge for degassing liquids in accordance with the invention, including an annular member having a cutting edge for dividing the liquid fraction of low-bubble content from the liquid fraction of high bubble content, outlet channels for the liquid fraction having the low bubble content, and stationary collecting chambers for receiving both liquid fractions therein, respectively;
  • FIG. 2a is an enlarged fragmentary view of FIG. 1 showing a detail of the degassing centrifuge which ineludes the backwardly curving channels provided on the rotor to reduce the peripheral speed of the liquid fraction having the low bubble content;
  • FIG. 2b is a sectional view of FIG. 2a taken along the line IIb Ilb in the direction of the arrows;
  • FIG. 3 is a view similar to that of FIG. 1 of another embodiment of the degassing centrifuge according to the invention; wherein a liquid chamber is located adjoining the rotor and into which the liquid fraction having the low bubble content is receivable without being in contact with gas which forms the bubbles; and
  • FIG. 4 is a view corresponding to those of FIGS. 1 and 3 of yet another embodiment of the degassing centrifuge wherein discharge of the liquid fractions having the low and high gas-bubble contents, respectively, is effected by a draining device that is stationary or is rotatable slowly with and relative to the centrifuge rotor.
  • FIGS. 1, 2a and 21 there is shown therein a degassing centrifuge constructed in accordance with the device of the invention for carrying out the method of the invention.
  • liquid to be degassed is introduced through an inlet in the bottom of the centrifuge into a centrifuge rotor 2 which is bowlshaped and slightly widens upwardly in conical form to an open top thereof.
  • the liquid accelerates in peripheral direction of the rotor 2 and spreads over the inner wall surface of the rotor 2 in a rising thin film 3.
  • Degassing of the liquid occurs as the film 3 is carried upwardly long the inner wall surface of the rotor 2, which is, for example, approximately 10 cm to l m long (high) until, at the upper end of the rotor 2, a liquid layer having a low-bubble content has formed adjacent the wall of the rotor 2, and a liquid layer having a high-bubble content has formed thereon.
  • Both of these component layers are divisible from one another by a retractable annular, substantially cylindrical member 4 having a cutting edge and being in the form of an overflow or weir.
  • the liquid component or fraction 5 having the high gas-bubble content is directed into a collecting channel or duct 6 and therefrom, after partial separation of the bubbles, is recycled through an outer tube or duct 7 and through the bottom inlet to the rotor 2 into the supplied flow of the film being degassed in the rotor 2.
  • the partial separation of the bubbles is effected, for example, by flinging or casting the liquid fraction having the high gas-bubble content from a horizontal part of an overflow or weir 8, which is connected at the top thereof to the cutting edge member 4, and by causing it to impact with an opposing cylindrical wall of the draining or collecting duct or channel 6 under vacuum.
  • the liquid having the low gas-bubble content leaves the rotor 2 through backwardly curved draining ducts or channels 10 (note FIGS. 2a and 2b, particularly), and is transferred at low peripheral and radial velocity to a stationary, slightly conical annular lid or cover 11 of a draining duct or channel 12.
  • the transfer of the liquid fraction having the low bubbles content should be effected as smoothly as possible, and therefore the liquid leaving the draining channels 10 should, if possible,
  • FIG. 2a A detail of the eentrifuge for the transfer of the liquid fraction 13 having the low bubble content and the liquid fraction 5 having the high bubble content is shown in enlarged view in FIG. 2a.
  • FIG. 2b In the cross-sectional view of FIG. 2b, there can be seen the exemplary shape of the backwardly curved draining channels by means of which the peripheral speed of the liquid fraction having the low gas or bubble content is reduced.
  • FIG. 2a shows in section part ofthe degassing centrifuge of the invention whose operation has already been described hereinbefore with respect to FIG. I.
  • the overflow 4', 8 formed with a cutting edge is shown both in FIGS. 1 and 2a as a member rotating with the centrifuge rotor. This affords advantages with respect to production techniques, since the thickness of the film is only in the order of magnitude of millimeters and the spacing between the cutting edge 4 and the inner wall surface of the rotor must be accommodated or adjusted to the thickness of the film. In principle, however, it is also possible to employ a stationary non-rotating overflow 4, 8 instead of a rotary one.
  • FIG. 3 there is shown another embodiment ofthe centrifuge of the invention wherein the rotor adjoins a liquid chamber into which the liquid fraction having the low gas-bubble content has passed without coming into contact with any of the gas that forms the bubbles.
  • a suitable outlet aperture 14 which, in its simplest form, is an annular peripheral slot or a row of sieve holes, is provided in the rotor wall.
  • the peripheral speed is reduced by friction in the initially static liquid ring 15. In the liquid ring 15, during stationary opera tion, an outwardly decreasing peripheral speed is established.
  • the gas In order to afford the transfer of the liquid having the low gas-bubble content without permitting contact thereof with gas that might form additional bubbles therein, the gas must be prevented from penetrating from the outer chamber 16 (FIG. 3).
  • the seal 17 is, for example, a packing adjacent the rotor or a labyrinth or groove seal, it being advantageous for the seal to be soaked through outwardly from the inside thereof with liquid in order to prevent any gas from penetrating therethrough.
  • a cutting edge member or film splitter 4 that rotates with the centrifuge rotor.
  • FIG. 4 there is shown yet another embodiment of the degassing centrifuge wherein the removal of the liquid fraction having the low gas content and the liquid fraction having the high gas content is effected by a stationary draining device or one that rotates slowly with the centrifuge rotor.
  • a rotationally symmetrical draining device for the liquid fraction having the low gas content and for the liquid fraction having the high gas content is provided.
  • the two fractions of the liquid are again divided from one another by a cutting edge member or film splitter 4.
  • the liquid fraction having the low bubble content is, however, accumulated or collected in an annular collecting chamber 20 and removed therefrom by the draining device.
  • the draining device is formed, for example, of slightly conical metal plates 21 which are disposed above one another and which define therebetween rotationally symmetrical chambers for carrying away the liquid fractions. At the outer periphery of the rotor, there are located radially or curved scoops 18 and 19, which skim off the liquid fractions.
  • individual draining channels or tubes can be provided which taper to a point at the forward end thereof and skim or scale off the liquid fractions.
  • the centrifuge is disposed so as to be vertically oriented and open at the top thereof.
  • devices within the scope of the invention can be conceived of wherein, for example. the centrifuge is operable with an open bottom end. This type of orientation may be advantageous for discharging parts of the liquid from the centrifuge.
  • Method of degassing a liquid flowing in a film along the inner peripheral surface of a rotating centrifuge rotor which comprises dividing the liquid, before it leaves the rotor, into a fraction having a low gasbubble content and a fraction having a high gas-bubble content, separately removing the fraction having a high gas-bubble content, and separately removing the liquid fraction having the low gas-bubble content from the rotor in a manner to minimize the addition of further gas-bubbles thereto.
  • Method according to claim 1 which includes returning the liquid fraction having the high gasbubble content to the flowing liquid film after liberating part of the gas bubbles from the last-mentioned liquid frac tron.
  • Degassing centrifuge for carrying out a method of degassing a liquid flowing in a film having respective liquid layers with a low and high gas-bubble content, comprising a rotor having an open end, and overflow and dividing means located at said open end for dividing a liquid film flowing along the inner peripheral surface of said rotor into a liquid fraction having a low gas bubble content and a liquid fraction having a high gasbubble content before separately removing said liquid fractions from said rotor, said overflow and dividing means being adjustable to the thickness of the liquid layer having the low gas-bubble content.
  • Centrifuge according to claim 5 including backwardly curving outlet channels located adjacent said open end of said rotor and adapted to receive therein, during rotation of said rotor, the liquid fraction having the low gas-bubble content and to reduce the peripheral speed thereof.
  • Centrifuge according to claim 5 including an annular liquid chamber adjacent said rotor and surrounding said open end thereof, and means for transferring the liquid fraction having the low gas-bubble content from said rotor to said liquid chamber while simultaneously avoiding contact thereof with gas forming the bubbles.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Centrifugal Separators (AREA)
  • Degasification And Air Bubble Elimination (AREA)
US00291031A 1971-09-21 1972-09-21 Method and device for degassing liquids Expired - Lifetime US3856483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2147124A DE2147124C3 (de) 1971-09-21 1971-09-21 Verfahren und Vorrichtung zum Entgasen von Flüssigkeiten

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US (1) US3856483A (xx)
JP (1) JPS4857273A (xx)
CH (1) CH547656A (xx)
DE (1) DE2147124C3 (xx)
FR (1) FR2153375B1 (xx)
GB (1) GB1408869A (xx)
IT (1) IT965440B (xx)
NL (1) NL7212717A (xx)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955755A (en) * 1975-04-25 1976-05-11 The United States Of America As Represented By The United States Energy Research And Development Administration Closed continuous-flow centrifuge rotor
US3973930A (en) * 1973-10-09 1976-08-10 Burgess Harry L Drilling mud degasser apparatus and method
US3998382A (en) * 1974-11-01 1976-12-21 Klockner-Humboldt-Deutz Aktiengesellschaft Mechanism for degasification of a viscous liquid by means of centrifugal action
US4030897A (en) * 1974-11-28 1977-06-21 Saint-Gobain Industries Degassing of liquids
US4108616A (en) * 1975-10-23 1978-08-22 General Electric Company Liquid-gas phase separation for self-contained liquid metal current collectors
US4272258A (en) * 1979-11-26 1981-06-09 Shifflett Wiley M Mud degasser method and apparatus
US4326863A (en) * 1980-07-21 1982-04-27 Geosource Inc. Centrifugal degasser
US4344774A (en) * 1981-03-23 1982-08-17 Uvon Skipper Degasser
US4908048A (en) * 1981-02-18 1990-03-13 Agfa-Gevaert Aktiengesellschaft Apparatus for degassing liquids by centrifugal force in a frustum shaped body
US5264024A (en) * 1989-12-26 1993-11-23 Eastman Kodak Company Method for degassing an aqueous composition and device for carrying out this method
US5601523A (en) * 1995-07-13 1997-02-11 Knelson; Benjamin V. Method of separating intermixed materials of different specific gravity with substantially intermixed discharge of fines
US5749945A (en) * 1996-07-22 1998-05-12 Beck; Earl Joseph Apparatus for rapidly degassing and decontaminating liquids
US5861052A (en) * 1993-12-23 1999-01-19 Pom Technology Oy Ab Apparatus and process for pumping and separating a mixture of gas and liquid
US6464758B1 (en) * 1999-08-19 2002-10-15 Voith Papertechnik Patent Gmbh Apparatus and method for degassing a liquid or pasty medium in a machine for producing and/or upgrading a fiber material web
US20030232711A1 (en) * 2002-06-17 2003-12-18 Berit Bradley I. Centrifuge for extracting interstitial fluid
US6666099B2 (en) 2001-06-05 2003-12-23 Pason Systems Corp. Apparatus to recover sample gases from fluids
US6723205B1 (en) 1999-06-03 2004-04-20 Fom Technology Oy Ab Degassing centrifugal apparatus with energy recovery, process for degassing a fluid and process for producing paper or board
WO2006128963A3 (en) * 2005-06-02 2007-02-22 Metso Paper Inc Method and arrangement for exhausting gas from a coating material
WO2007074211A1 (en) * 2005-12-28 2007-07-05 Metso Paper, Inc. Method and apparatus for degassing coating material
US20090145461A1 (en) * 2007-12-10 2009-06-11 Rastogi Sanjay M Degassing System
US20100107878A1 (en) * 2008-10-30 2010-05-06 Crowder Robert O Venting and Filtration Systems with Gas Permeable Membrane
US20110073812A1 (en) * 2008-06-03 2011-03-31 Koninklijke Philips Electronics N.V. Method and device for de-gassing a liquid-gas-mixture
US7947112B1 (en) 2007-07-16 2011-05-24 Rheodyne, Llc Method for degassing a fluid
US9527717B2 (en) 2013-03-12 2016-12-27 Keurig Green Mountain, Inc. Beverage machine outlet
US10107279B2 (en) 2012-12-10 2018-10-23 Kongsberg Automotive Ab Unitary fluid flow apparatus for inflating and deflating a device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496765A4 (en) * 1989-10-19 1993-04-07 The University Of Newcastle Research Associates Limited Method and apparatus for separation by flotation in a centrifugal field
DE4314020A1 (de) * 1993-04-29 1994-11-03 Rolf Dipl Ing Schnause Verfahren und Vorrichtung zum kontinuierlichen Reinigen und Entgasen viskoser Kunststoffschmelzen
DE10143405C2 (de) 2001-09-05 2003-12-18 Westfalia Separator Ag Schälscheibenvorrichtung zum Ableiten von Flüssigkeit aus einer Zentrifugentrommel
FI121148B (fi) * 2006-09-29 2010-07-30 Metso Paper Inc Menetelmä kuiturainan päällystämiseksi verhopäällystyslaitteella

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973930A (en) * 1973-10-09 1976-08-10 Burgess Harry L Drilling mud degasser apparatus and method
US3998382A (en) * 1974-11-01 1976-12-21 Klockner-Humboldt-Deutz Aktiengesellschaft Mechanism for degasification of a viscous liquid by means of centrifugal action
US4030897A (en) * 1974-11-28 1977-06-21 Saint-Gobain Industries Degassing of liquids
US3955755A (en) * 1975-04-25 1976-05-11 The United States Of America As Represented By The United States Energy Research And Development Administration Closed continuous-flow centrifuge rotor
US4108616A (en) * 1975-10-23 1978-08-22 General Electric Company Liquid-gas phase separation for self-contained liquid metal current collectors
US4272258A (en) * 1979-11-26 1981-06-09 Shifflett Wiley M Mud degasser method and apparatus
US4326863A (en) * 1980-07-21 1982-04-27 Geosource Inc. Centrifugal degasser
US4908048A (en) * 1981-02-18 1990-03-13 Agfa-Gevaert Aktiengesellschaft Apparatus for degassing liquids by centrifugal force in a frustum shaped body
US4344774A (en) * 1981-03-23 1982-08-17 Uvon Skipper Degasser
US5264024A (en) * 1989-12-26 1993-11-23 Eastman Kodak Company Method for degassing an aqueous composition and device for carrying out this method
US5861052A (en) * 1993-12-23 1999-01-19 Pom Technology Oy Ab Apparatus and process for pumping and separating a mixture of gas and liquid
US5601523A (en) * 1995-07-13 1997-02-11 Knelson; Benjamin V. Method of separating intermixed materials of different specific gravity with substantially intermixed discharge of fines
US5749945A (en) * 1996-07-22 1998-05-12 Beck; Earl Joseph Apparatus for rapidly degassing and decontaminating liquids
US6723205B1 (en) 1999-06-03 2004-04-20 Fom Technology Oy Ab Degassing centrifugal apparatus with energy recovery, process for degassing a fluid and process for producing paper or board
US6827820B1 (en) 1999-06-03 2004-12-07 Pom Technology Oy Ab Degassing centrifugal apparatus, process for pumping and degassing a fluid and process for producing paper or board
US6464758B1 (en) * 1999-08-19 2002-10-15 Voith Papertechnik Patent Gmbh Apparatus and method for degassing a liquid or pasty medium in a machine for producing and/or upgrading a fiber material web
US6666099B2 (en) 2001-06-05 2003-12-23 Pason Systems Corp. Apparatus to recover sample gases from fluids
US6817970B2 (en) 2002-06-17 2004-11-16 Large Scale Biology Corporation Centrifuge for extracting interstitial fluid
US20030232711A1 (en) * 2002-06-17 2003-12-18 Berit Bradley I. Centrifuge for extracting interstitial fluid
WO2003106039A1 (en) * 2002-06-17 2003-12-24 Large Scale Biology Corporation Centrifuge for extracting interstitial fluid
EP1885467A4 (en) * 2005-06-02 2012-01-18 Metso Paper Inc METHOD AND DEVICE FOR EXHAUSTING GAS FROM A COATING MATERIAL
WO2006128963A3 (en) * 2005-06-02 2007-02-22 Metso Paper Inc Method and arrangement for exhausting gas from a coating material
EP1885467A2 (en) * 2005-06-02 2008-02-13 Metso Paper, Inc. Method and arrangement for exhausting gas from a coating material
US20080166488A1 (en) * 2005-06-02 2008-07-10 Metso Paper, Inc. Method and Arrangement for Exhausting Gas from a Coating Material
US7935179B2 (en) 2005-06-02 2011-05-03 Metso Paper, Inc. Method and arrangement for exhausting gas from a coating material
US7879140B2 (en) 2005-12-28 2011-02-01 Metso Paper, Inc. Method and apparatus for degassing coating material
US20090301303A1 (en) * 2005-12-28 2009-12-10 Metso Paper, Inc. Method and Apparatus for Degassing Coating Material
CN101351253B (zh) * 2005-12-28 2011-11-30 梅特索纸业有限公司 涂料脱气的方法和设备
WO2007074211A1 (en) * 2005-12-28 2007-07-05 Metso Paper, Inc. Method and apparatus for degassing coating material
US7947112B1 (en) 2007-07-16 2011-05-24 Rheodyne, Llc Method for degassing a fluid
US20090145461A1 (en) * 2007-12-10 2009-06-11 Rastogi Sanjay M Degassing System
CN102046255A (zh) * 2008-06-03 2011-05-04 皇家飞利浦电子股份有限公司 对液体气体混合物脱气的方法和装置
US20110073812A1 (en) * 2008-06-03 2011-03-31 Koninklijke Philips Electronics N.V. Method and device for de-gassing a liquid-gas-mixture
US20100107878A1 (en) * 2008-10-30 2010-05-06 Crowder Robert O Venting and Filtration Systems with Gas Permeable Membrane
US8540807B2 (en) 2008-10-30 2013-09-24 Porous Media Corporation Venting and filtration systems with gas permeable membrane
US10107279B2 (en) 2012-12-10 2018-10-23 Kongsberg Automotive Ab Unitary fluid flow apparatus for inflating and deflating a device
US9527717B2 (en) 2013-03-12 2016-12-27 Keurig Green Mountain, Inc. Beverage machine outlet

Also Published As

Publication number Publication date
JPS4857273A (xx) 1973-08-11
DE2147124A1 (de) 1973-03-29
DE2147124B2 (de) 1974-01-24
NL7212717A (xx) 1973-03-23
DE2147124C3 (de) 1974-08-22
GB1408869A (en) 1975-10-08
IT965440B (it) 1974-01-31
FR2153375B1 (xx) 1976-01-23
CH547656A (de) 1974-04-11
FR2153375A1 (xx) 1973-05-04

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