EP1278962A1 - Dispositif pour convoyer des gaz humides - Google Patents

Dispositif pour convoyer des gaz humides

Info

Publication number
EP1278962A1
EP1278962A1 EP01949304A EP01949304A EP1278962A1 EP 1278962 A1 EP1278962 A1 EP 1278962A1 EP 01949304 A EP01949304 A EP 01949304A EP 01949304 A EP01949304 A EP 01949304A EP 1278962 A1 EP1278962 A1 EP 1278962A1
Authority
EP
European Patent Office
Prior art keywords
ventilation
valve
channel
conveying
pumps
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.)
Granted
Application number
EP01949304A
Other languages
German (de)
English (en)
Other versions
EP1278962B1 (fr
Inventor
Erwin Hauser
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.)
KNF Neuberger GmbH
Original Assignee
KNF Neuberger GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7640594&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1278962(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KNF Neuberger GmbH filed Critical KNF Neuberger GmbH
Publication of EP1278962A1 publication Critical patent/EP1278962A1/fr
Application granted granted Critical
Publication of EP1278962B1 publication Critical patent/EP1278962B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
    • F04B37/20—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids for wet gases, e.g. wet air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms

Definitions

  • the present invention relates to a multi-stage device for conveying moist gases, with a plurality of feed pumps, each of which has a displacer that oscillates in a feed chamber and is connected in series via a connecting channel, and with a ventilation device that has at least one ventilation channel, the ventilation channel in a connecting channel connecting downstream feed pumps opens.
  • a device which has at least one feed pump for conveying moist gases.
  • Each of these feed pumps has a displacer that oscillates in a feed chamber.
  • the pump head of this delivery pump is forced-cooled.
  • At least one feed pump has an aeration device with an aeration channel which opens into the region of the delivery space.
  • a ventilation valve is interposed in this ventilation channel and can be actuated as required and independently of the stroke position of the displacer during the operation of the feed pump.
  • a targeted flow is set up in the feed pump with a sufficiently high flow rate to entrain the liquid droplets which have hitherto remained in the feed chamber.
  • a multi-stage conveying device is already known, the pump stages of which are connected to one another via a connecting channel serving as an intermediate vacuum space.
  • the previously known conveyor device has a ventilation channel which opens into the connecting channel and is provided with a throttle point.
  • the connecting channel is in turn connected to the pumping chamber of the first pump stage, possibly via a further throttle point.
  • this gas balancing device With the help of this gas balancing device, a sufficient amount of gas is to be introduced into the pumping chamber of the first pump stage in order to counteract condensation and subsequent evaporation of the water vapor still contained in the gas to be pumped out.
  • the design effort associated with this gas balancing device of the known conveyor device is comparatively high.
  • the solution to this problem according to the invention consists in particular in that a ventilation valve which can be actuated by a motor is interposed in the ventilation channel and which ventilation valve can be actuated by means of the control device as required and independently of the stroke position of the displacer.
  • the device according to the invention has a ventilation valve which can be actuated by a control device.
  • the ventilation valve is interposed in the ventilation channel, which opens into a connecting channel connecting one another in a subsequent pump stage.
  • the ventilation valve can be actuated by means of the control device as required and independently of the stroke position of the displacer and can thus be opened intermittently, for example once or several times during operation of the conveying device.
  • the conveying device can be vented once or several times during its operation, for example after certain condensation times or at different pressure levels, in a chamber to be evacuated by means of the conveying device.
  • a targeted flow with a sufficiently high flow velocity is built up in the conveying pump of the conveying stage following the ventilation duct in order to entrain the liquid and condensate drops which have previously remained in the conveying chamber, in particular of this conveying pump. Since the outlet valve of the delivery stage upstream of the ventilation duct closes suddenly when the ventilation valve is opened, the ventilation or drying gas can only take one direction, while the vacuum already achieved in the upstream delivery stages and in particular in the chamber to be evacuated is essentially maintained. It is a particular advantage of the delivery device according to the invention that the ventilation channel can also be guided outside the pump heads of the delivery pump and can open into the connecting channel. In such an embodiment according to the invention, the manufacturing and construction outlay is additionally significantly reduced.
  • control device which is in control connection with the ventilation valve has a timing element and / or a pressure sensor for the one-time or repeated intermittent actuation of the ventilation valve depending on the condensation time and / or depending on predetermined conditions Pressure levels in a chamber to be evacuated by the conveyor.
  • the conveying device according to the invention can advantageously be used in all high-condensate applications.
  • the feed pump belonging to the first stage of the feed device according to the invention is connected on the suction side to an autoclave or to a vacuum drying chamber and on the pressure side to the suction side of the second feed pump.
  • the low construction and manufacturing effort is further favored if the feed pumps used in the individual stages of the conveying device are commercially available pumps, in particular diaphragm pumps.
  • a preferred and structurally particularly simple embodiment according to the invention provides that the motor-operated ventilation valve is a solenoid valve.
  • a two-stage conveying device 1 which is intended for conveying moist and in particular condensate gases.
  • the conveying direction 1 has two conveying pumps 2, 3, each of which has a displacer which oscillates in a conveying space 4.
  • the delivery pumps 2, 3 are designed here as membrane pumps and their displacers as shaped membranes 5.
  • the feed pumps 2, 3 are connected in series via a connecting channel 6.
  • the feed pump 2 forming the first feed stage is connected on the suction side to an autoclave, a vacuum drying chamber or similar vacuum chamber and on the pressure side to the suction side of the second feed pump 3.
  • the conveying device 1 has a ventilation device 7 with a ventilation channel 8, which opens into the connecting channel 6 between the first and second pumping stages.
  • a ventilation valve 9 is interposed in the ventilation channel 8.
  • the venting valve 9 can be opened intermittently once or several times during the operation of the conveying device 1.
  • the conveying device 1 can be vented once or several times during its operation, for example after certain condensation times or at different pressure levels, in a chamber to be evacuated by means of the conveying device 1.
  • a targeted flow with a sufficiently high flow rate is achieved in the conveying pump 3 of the conveying stage following the ventilation duct 8 Flow rate built up in order to entrain the liquid and condensate drops remaining in the delivery chamber in particular of this delivery pump 3. Since, when the ventilation valve 9 is opened, the outlet valve 10 of the conveyor stage 2 upstream of the ventilation duct 8 closes at the same time, the ventilation or drying gas can only take one direction, while the vacuum already achieved in the upstream conveyor stage 2 and in particular in the chamber to be evacuated essentially preserved.
  • the connecting channel 6 has a channel section formed from a pipe or a hose line 11 and in each case one channel section 13, 14 located in the pump heads of the feed pumps 2, 3 between the hose line 11 and the outlet or inlet valve 10, 12.
  • the ventilation duct 8 is arranged here in the pump head of the first feed pump 2 and opens there in the duct section 13 arranged downstream of the outlet valve 10. However, it is a particular advantage of the present invention proposal that the ventilation duct 8 is also guided outside the pump heads of the feed pumps 2, 3 and can open into the hose 11.
  • the ventilation device 7 assigned to the delivery pump 3 is sufficient. If the ventilation valve 9 is opened, the outlet valve 10 of the first feed pump 2 automatically closes, so that there is no loss of time or power.
  • moist gases can also be conveyed without having to counteract the formation of condensate by artificially heating the conveying pumps 2, 3.
  • the conveying direction 1 shown here draws even with a high moisture content of the conveying medium from a large conveying capacity, without this conveying device 1 requiring special conveying pumps and a correspondingly high production and construction expenditure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne un dispositif à étages multiples (1) permettant de convoyer des gaz humides, comportant plusieurs pompes de refoulement (2,3) qui présentent chacune un déplaceur et sont montées mutuellement en aval par l'intermédiaire d'un canal de jonction (6), ainsi qu'un dispositif de ventilation (7) présentant au moins un canal de ventilation (8). Ledit canal de ventilation (8) débouche dans un canal de jonction (6) reliant les pompes de refoulement montées mutuellement en aval, l'une à l'autre. Ce dispositif (1) se caractérise en ce qu'une soupape de ventilation (9) actionnable de manière motorisée par l'intermédiaire d'un dispositif de commande est intercalée dans le canal de ventilation (8). Cette soupape de ventilation (9) peut être actionnée au moyen du dispositif de commande en fonction des besoins et indépendamment de la position de levage du déplaceur.
EP01949304A 2000-05-03 2001-04-30 Dispositif pour convoyer des gaz humides Expired - Lifetime EP1278962B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10021454A DE10021454C2 (de) 2000-05-03 2000-05-03 Vorrichtung zum Fördern feuchter Gase
DE10021454 2000-05-03
PCT/EP2001/004884 WO2001083990A1 (fr) 2000-05-03 2001-04-30 Dispositif pour convoyer des gaz humides

Publications (2)

Publication Number Publication Date
EP1278962A1 true EP1278962A1 (fr) 2003-01-29
EP1278962B1 EP1278962B1 (fr) 2006-01-11

Family

ID=7640594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01949304A Expired - Lifetime EP1278962B1 (fr) 2000-05-03 2001-04-30 Dispositif pour convoyer des gaz humides

Country Status (4)

Country Link
US (1) US6817839B2 (fr)
EP (1) EP1278962B1 (fr)
DE (2) DE10021454C2 (fr)
WO (1) WO2001083990A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10255792C5 (de) * 2002-11-28 2008-12-18 Vacuubrand Gmbh + Co Kg Verfahren zur Steuerung einer Vakuumpumpe sowie Vakuumpumpensystem
DE502004007004D1 (de) 2004-07-31 2008-06-12 Hach Lange Gmbh Flüssigkeitsproben-Fördervorrichtung
DE102009043644B4 (de) * 2009-09-29 2011-07-07 KNF Neuberger GmbH, 79112 Mehrstufige Membran-Saugpumpe
DE202009013127U1 (de) 2009-09-29 2011-02-17 Knf Neuberger Gmbh Mehrstufige Membran-Saugpumpe
DE202010002145U1 (de) * 2010-02-09 2011-09-07 Vacuubrand Gmbh + Co Kg Membranvakuumpumpe
DE102013213257A1 (de) * 2013-07-05 2015-01-08 Pfeiffer Vacuum Gmbh Membranvakuumpumpe
CN105526128B (zh) * 2016-02-05 2018-11-23 宁波泰尔斯电子实业有限公司 微型真空泵及组合式微型真空泵
US11009020B2 (en) 2016-11-28 2021-05-18 Massachusetts Institute Of Technology Vacuum pumps and methods of manufacturing the same
US11873802B2 (en) * 2020-05-18 2024-01-16 Graco Minnesota Inc. Pump having multi-stage gas compression

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB923072A (en) * 1958-07-23 1963-04-10 Leybold Hockvakuum Anlagen Gmb A method of and an apparatus for removing condensable vapour from a container
FR2082631A5 (fr) * 1970-03-20 1971-12-10 Gen Pneumatic
US4086843A (en) * 1977-02-17 1978-05-02 Caterpillar Tractor Co. Tilt tip circuit with bypass valve
DE3710782A1 (de) * 1987-03-31 1988-10-20 Vacuubrand Gmbh & Co Verfahren und vorrichtung zum abpumpen von daempfen und/oder dampfhaltigen gemischen und/oder gas-dampf-gemischen oder dgl. medien
DE29618911U1 (de) * 1996-10-30 1996-12-19 Dekema Dental-Keramiköfen GmbH, 83395 Freilassing Pumpenanordnung
JP3346208B2 (ja) * 1997-02-17 2002-11-18 マックス株式会社 多段圧縮機の負荷制御装置
DE19709206A1 (de) * 1997-03-06 1998-09-10 Leybold Vakuum Gmbh Vakuumpumpe
DE19732808A1 (de) 1997-07-30 1999-02-04 Knf Neuberger Gmbh Verfahren zur Evakuierung der Sterilisationskammer einer Dampfsterilisationsvorrichtung sowie Dampfsterilisationsvorrichtung
DE19831123A1 (de) * 1998-07-11 2000-01-13 Pfeiffer Vacuum Gmbh Gasballasteinrichtung für mehrstufige Verdrängerpumpen
DE19851680C2 (de) * 1998-11-10 2003-04-10 Knf Neuberger Gmbh Verfahren zum Fördern feuchter Gase mittels einer Fördereinrichtung sowie Fördereinrichtung zum Durchführen dieses Verfahrens
US6248157B1 (en) * 1999-08-20 2001-06-19 Systec Inc. Vacuum degassing
JP2002155879A (ja) * 2000-11-22 2002-05-31 Hitachi Ltd オイルフリースクリュー圧縮機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0183990A1 *

Also Published As

Publication number Publication date
DE10021454C2 (de) 2002-03-14
EP1278962B1 (fr) 2006-01-11
DE10021454A1 (de) 2001-11-22
US20030123997A1 (en) 2003-07-03
WO2001083990A1 (fr) 2001-11-08
DE50108678D1 (de) 2006-04-06
US6817839B2 (en) 2004-11-16

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