EP1206641B1 - Membranpumpe - Google Patents
Membranpumpe Download PDFInfo
- Publication number
- EP1206641B1 EP1206641B1 EP00949341A EP00949341A EP1206641B1 EP 1206641 B1 EP1206641 B1 EP 1206641B1 EP 00949341 A EP00949341 A EP 00949341A EP 00949341 A EP00949341 A EP 00949341A EP 1206641 B1 EP1206641 B1 EP 1206641B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- pump
- working
- diaphragm
- additional
- 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
Images
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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
- F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid
-
- 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 invention relates to a diaphragm pump with a, a delivery chamber limiting working membrane, with one on the side facing away from the pumping chamber the Working diaphragm arranged additional membrane, with one between the working membrane and the Additional membrane provided membrane space as well as with a pump drive for one same-direction oscillating movement of the working and the additional membrane, wherein the membrane space with at least one suction channel for Pressure relief of the membrane gap connected is.
- the membrane Diaphragm pump one strives to have an optimum between To achieve rigidity and elasticity. While a high elasticity of the membrane required is as low as the membrane voltages it is possible to keep it possible at the same time also strive for a high rigidity, so that the Membrane under the membrane upper and underside occurring differential pressure load does not buckle and so the Creation space volume reduced or vice versa, the dead space volume increased.
- crank chamber can also be used to outgass the Lead the bearing oil in the connecting rod bearing, so that the ball bearing may run dry. Since the bearing grease in the crankcase over the connecting line vacuum side in the flow can reach, there is also the risk that the fluid is contaminated.
- this prior art reciprocating pump has a reciprocating piston, are in this prior art pump with a elastic membrane at pressure differential loads not occurring problems. Rather, this can be previously known reciprocating pump, the gap between the Lifting piston or its associated sealing sleeve on the one hand and the sealing membrane on the other hand, especially in the Start this prior art pumping device, soon as far Be evacuated that an undesirable overflow of Displacement of the reciprocating pump in the space deleted or but largely avoided and the entire Pumping device when starting therefore faster ready for use is.
- FR-A 1 292 254 discloses a membrane compressor known, which has a working diaphragm and an additional diaphragm has, which delimit between them a membrane gap.
- the previously known membrane compressor has a pressure channel on, the membrane gap with the pressure side of Compressor connects. With the help of the pressure channel is in Membrane gap creates a pressure that the Working membrane should support and between the Atmospheric pressure and the discharge pressure is.
- the membrane gap over the at least one suction channel with the Suction side of the diaphragm pump pneumatically connected.
- the membrane gap evacuated continuously, such that on the top of the working diaphragm and on the bottom the working diaphragm during the suction phase always the same Pressures prevail. Because in this phase thus no Pressure difference between membrane top and bottom of the Working diaphragm works, the working diaphragm can not work Bumping direction of the pump room and an undesirable Reduction of the pump chamber volume is avoided.
- the larger pumping chamber volume can increase the pumping speed in the Suction phase can be increased. This has a particularly positive effect in pressure ranges or pumping ranges, which are close to the final pressure. The pressure differences only act on the additional membrane, where they are not negative Influence on the pumping speed of the diaphragm pump can have.
- the diaphragm pump according to the invention is the first stage of a multistage, in particular a two-stage pump or Pumping system forms, the advantage can be achieved that in the ejection phase the pressure on the membrane top of the Working diaphragm only slightly increases, because in two-stage Diaphragm pumps is the transfer pressure of the first stage well below atmospheric pressure.
- this working diaphragm can be highly elastic be designed without the mentioned “Bulging" of this membrane is to be feared.
- the Membrane stresses clearly, which in turn a significant Increasing the membrane life brings with it.
- the efficiency of Improve pump and a by buckling the diaphragm conditional evacuation delay is avoided.
- the diaphragm pump according to the invention can be increased, whereby a further increase in absorbency even at can be achieved approximately the same dimensions.
- the membrane diaphragm of the working diaphragm no Atmospheric pressure acts and the working diaphragm therefore not more noisily in the pump head at the delivery chamber strikes in the membrane pump according to the invention the Noise development significantly reduces what is especially with such diaphragm pumps, which acts as Suction pumps in medical technology should be used.
- a particularly simple embodiment according to the invention provides that the membrane space on the at least a suction channel parallel to the delivery chamber with the Pump inlet is pneumatically connected. At this Embodiment sucks the pump on the one hand over the Pump inlet and on the other hand via the suction from the Membrane gap on.
- a development according to the invention in contrast, provides that the pump inlet is pneumatically connected via the membrane gap and the suction channel with the delivery chamber.
- the intake path in the pump interior runs from the pump inlet via the membrane interspace, the at least one suction channel and the inlet valve into the delivery chamber.
- the Ansaugfilter- and / or Noise damping element made of an elastic material manufactured and on the one hand by the working membrane as well on the other hand is acted upon by the additional membrane.
- the Ansaugfilter- and / or noise damping element the membrane gap substantially fills.
- the suction filter in the membrane gap and / or noise damping element is with a particular associated with low manufacturing overhead when considered as a open - pored and between the working membrane and the Additional membrane arranged foam element designed is.
- the working membrane is a dimensionally stable Associated with membrane support, which is connected to a connecting rod of the Pump drive is held and the working diaphragm on the Membrane back at least in a central area conformed supports.
- Working membrane and the additional membrane to a double membrane are integrally connected to each other. That's it appropriate if the working membrane and the additional membrane integral with each other via a central intermediate piece are connected and if this intermediate piece at its the Pumping chamber side facing away from an undercut Mounting hole for insertion of a shape-matched and connected to a connecting rod of the pump drive Has fastening parts.
- the conveyor chamber side Diaphragm upper side to the contour of the pump head Delivery chamber is adapted in top dead center of the pump.
- the diaphragm pumps 101, 102, shown in FIGS. 1 to 5, 103, 104 and 105 have in contrast to a highly elastic, a delivery chamber 2 limiting Working membrane 1 also an additional membrane 3, wherein between the working diaphragm 1 and the additional diaphragm 3 Membrane space 4 is provided.
- the in their outer Ring zones in the pump housing 5 firmly clamped membranes 1, 3 engage in their central area on the connecting rod one Pump drive on, the working diaphragm 1 and the Additional membrane 3 between a top dead center and a bottom dead center in the same direction oscillating back and forth emotional.
- the connecting rod of the pump drive is here only the Connecting rod 6 shown.
- Figs. 1 to 5 which is in the Pump 101, 102, 103, 104 and 105 provided diaphragm gap 4 via a suction channel 7 with the suction side connected to these diaphragm pumps.
- Figs. 1, 3 and 5 illustrated diaphragm pumps 101, 103 and 105 of Membrane space 4 via the suction channel 7 parallel to Delivery chamber 2 pneumatically connected to the pump inlet 8.
- the pump inlet 8 in contrast via the membrane gap 4 and the suction channel 7 with the delivery chamber 2 pneumatically connected.
- the membrane gap 4 is continuous evacuated, such that on top of the working diaphragm 1 and on the underside of the working diaphragm 1 during the Suction phase always prevail the same pressures. Because in the Suction phase thus no pressure difference between membrane top and -unterseite the working diaphragm 1 acts, the Working diaphragm 1 not in the direction of the delivery chamber. 2 bulge and an undesirable reduction of the Creator volume is avoided. By the bigger one Pump chamber volume can increase the pumping speed in the intake phase increase.
- Fig. 4 it is shown that in the membrane space 4 of the Diaphragm pump 104 a Ansaugfilter- and Noise damping element 9 is provided.
- This Ansaugfilter- and noise damping element 9 is made of a elastic material, for example, from an open-pore Foam is made and on the one hand by the Working membrane 1 and on the other hand of the additional membrane 3 applied.
- This the membrane gap 4 substantially filling intake and noise damping element 9 is ring-shaped, wherein the annular opening 10 of the the membranes 1, 3 interconnecting connecting rod 6 of the Pleuels is interspersed.
- Ansaugfilter- and noise damping element 9 Parts can be omitted and space saved and the Diaphragm pump 104 are made particularly compact.
- Fig. 5 it is shown that the working membrane 1 of the Membrane pump 105 a dimensionally stable membrane support 11th is assigned, which is held at the connecting rod 6 of the connecting rod. While in the single-stage diaphragm pumps 101 to 105 according to 1 to 5 of the membrane gap 4 in the suction phase is specifically used to increase the pumping chamber volume, will be in the ejection phase when the pressure on the membrane top continuously towards the atmospheric pressure increases, the diaphragm support 11 is used, which the Working diaphragm 1 of the diaphragm pump 105 on the back of the diaphragm at least in a central area form-adapted supported. As a result, the dead space volume is kept small.
- the membranes 1, 3 in the region of a central Holding opening 12, 13 at the connecting rod 6 of the connecting rod fixed clamped. Not only the additional membrane 3, but also the Working diaphragm 1 of the pumps 101, 102, 104 and 105 is as Flat membrane designed.
- the working diaphragm 1 of Fig. 3 shown Diaphragm pump 103 is in contrast as a molding membrane educated.
- the working membrane 1 is with the additional membrane. 3 the diaphragm pump 103 via a central intermediate piece 14 to a double membrane 15 integrally connected.
- Fig. 3 becomes clear, has the intermediate piece 14 of the double diaphragm 15th on its side facing away from the delivery chamber 2 a undercut mounting hole in the one mating and with the connecting rod of the pump drive connected fastening part 16 is inserted.
- the Diaphragm pumps 101, 102, 103, 104 and 105 by a high Absorbency without bulging in the intake phase this comparatively highly elastic working membrane 1 to would be afraid.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Diaphragms And Bellows (AREA)
Description
Bei dieser weiterbildenden Ausführungsform gemäß der Erfindung verläuft der Ansaugweg im Pumpeninneren vom Pumpeneinlaß über den Membran-Zwischenraum, den zumindest einen Absaugkanal und das Einlaßventil in den Förderraum.
- Fig. 1
- eine Membranpumpe mit einer Arbeitsmembran, einer Zusatzmembran sowie einem zwischen diesen Membranen vorgesehenen Membran-Zwischenraum, wobei der Membran-Zwischenraum über einen Absaugkanal parallel zum Förderraum mit dem Pumpeneinlaß verbunden ist,
- Fig. 2
- eine Membranpumpe, ähnlich der aus Fig. 1, wobei der Förderraum über den Absaugkanal und den Membran-Zwischenraum mit dem Pumpeneinlaß pneumatisch verbunden ist,
- Fig. 3
- eine Membranpumpe, ähnlich der aus Fig. 1, wobei die Arbeitsmembran und die Zusatzmembran zu einer Doppelmembrane einstückig verbunden sind,
- Fig. 4
- die Membranpumpe aus Fig. 2, wobei ein Ansaugfilter- und Geräuschdämpfungselement aus offenporigem Schaumstoff vorgesehen ist, welches den Membran-Zwischenraum im wesentlichen ausfüllt und beidseits von den Membranen beaufschlagt wird,
- Fig. 5
- eine Membranpumpe, ähnlich der aus Fig. 1, wobei der Arbeitsmembrane eine formstabile Membran-Abstützung zugeordnet ist, welche die Arbeitsmembrane in der Ausstoßphase abstützt,
- Fig. 6
- eine zum Stand der Technik zählende Membranpumpe mit einer Flachmembrane, die unter der während der Ansaugphase einwirkenden Differenzdruckbelastung ausbeult, und
- Fig. 7
- eine ebenfalls zum Stand der Technik zählende Membranpumpe, deren Formmembrane wie in Fig. 6 in gleicher Weise ausbeult.
Claims (11)
- Membran-Vakuumpumpe (101, 102, 103, 104, 105) mit einer, einen Förderraum (2) begrenzenden Arbeitsmembrane (1), mit einer auf der dem Förderraum (2) abgewandten Seite der Arbeitsmembran (1) angeordneten Zusatzmembran (3), mit einem zwischen der Arbeitsmembran (1) und der Zusatzmembran (3) vorgesehenen Membran-Zwischenraum (4) sowie mit einem Pumpantrieb für eine gleichsinnige oszillierende Bewegung der Arbeits- und der Zusatzmembrane (1, 3), wobei die Membranpumpe die erste Stufe einer mehrstufigen Pumpe oder Pumpanlage bildet und wobei der Membran-Zwischenraum (4) zur Evakuierung und Angleichung der Druckverhältnisse im Membran-Zwischenraum (4) einerseits und im Förderraum (2) andererseits über zumindest einen Absaugkanal mit der Saugseite dieser Membran-Vakuumpumpe verbunden ist und wobei die Arbeitsmembrane (1) in den oberen und unteren Totpunkten ihrer Oszillationsbewegung gedehnt wird.
- Membranpumpe (101, 103, 105) nach Anspruch 1, dadurch gekennzeichnet, daß der Membran-Zwischenraum (2) über den zumindest einen Absaugkanal (7) parallel zum Förderraum (2) mit dem Pumpeneinlaß (8) pneumatisch verbunden ist.
- Membranpumpe (102, 104) nach Anspruch 1, dadurch gekennzeichnet, daß der Pumpeneinlaß (8) über den Membran-Zwischenraum (4) und den Absaugkanal (79) mit dem Förderraum (2) pneumatisch verbunden ist.
- Membranpumpe (104) nach Anspruch 3, dadurch gekennzeichnet, daß im Membran-Zwischenraum (4) zumindest ein Ansaugfilter und/oder Geräuschdämpfungselement (9) vorgesehen ist.
- Membranpumpe nach Anspruch 4, dadurch gekennzeichnet, daß das Ansaugfilter- und/oder Geräuschdämpfungselement (9) aus einem elastischen Material hergestellt und einerseits von der Arbeitsmembrane (1) sowie andererseits von der Zusatzmembrane (3) beaufschlagt ist.
- Membranpumpe nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß das Ansaugfilter- und/oder Geräuschdämpfungselement den Membran-Zwischenraum (4) im wesentlichen ausfüllt.
- Membranpumpe nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß das Ansaugfilter- und/oder Geräuschdämpfungselement (9) als ein offenporiges und zwischen der Arbeitsmembran (1) und der Zusatzmembran (3) angeordnetes Schaumstoffelement ausgestaltet ist.
- Membranpumpe (105) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Arbeitsmembran (1) eine formstabile Membran-Abstützung (11) zugeordnet ist, die an einem Pleuel des Pumpenantriebes gehalten ist und die Arbeitsmembran (1) auf der Membran-Rückseite zumindest in einem Zentralbereich formangepaßt abstützt.
- Membranpumpe (103) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Arbeitsmembran (1) und die Zusatzmembran (3) zu einer Doppelmembran (15) einstückig miteinander verbunden sind.
- Membranpumpe (103) nach Anspruch 9, dadurch gekennzeichnet, daß die Arbeitsmembran (1) und die Zusatzmembran (3) über ein zentrales Zwischenstück (11) einstückig miteinander verbunden sind und daß dieses Zwischenstück (11) an seiner dem Förderraum (2) abgewandten Seite eine hinterschnittene Befestigungsöffnung zum Einsetzen eines formangepassten und mit einem Pleuel des Pumpantriebes verbundenen Befestigungsteiles (16) aufweist.
- Membranpumpe nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Arbeitsmembrane (1) als Formmembrane ausgestaltet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19940498A DE19940498A1 (de) | 1999-08-26 | 1999-08-26 | Membranpumpe |
DE19940498 | 1999-08-26 | ||
PCT/EP2000/006727 WO2001014744A1 (de) | 1999-08-26 | 2000-07-14 | Membranpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1206641A1 EP1206641A1 (de) | 2002-05-22 |
EP1206641B1 true EP1206641B1 (de) | 2005-08-17 |
Family
ID=7919682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00949341A Expired - Lifetime EP1206641B1 (de) | 1999-08-26 | 2000-07-14 | Membranpumpe |
Country Status (6)
Country | Link |
---|---|
US (1) | US6796215B1 (de) |
EP (1) | EP1206641B1 (de) |
JP (1) | JP4755374B2 (de) |
DE (2) | DE19940498A1 (de) |
TW (1) | TW482873B (de) |
WO (1) | WO2001014744A1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2388163A (en) * | 2001-05-09 | 2003-11-05 | David R Marshall | Cooling a flexible pump seal |
DE10357320A1 (de) * | 2003-12-05 | 2005-06-30 | Crane Process Flow Technologies Gmbh | Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung |
DE10360067A1 (de) * | 2003-12-20 | 2005-07-21 | Leybold Vakuum Gmbh | Membrankompressor |
US8197231B2 (en) | 2005-07-13 | 2012-06-12 | Purity Solutions Llc | Diaphragm pump and related methods |
CN101273199A (zh) * | 2005-09-27 | 2008-09-24 | 冈山县 | 泵 |
US20080232987A1 (en) * | 2006-11-28 | 2008-09-25 | S.A.M. Amstar | Diaphragm circulator |
DE102007005223A1 (de) * | 2006-02-10 | 2007-09-13 | Continental Teves Ag & Co. Ohg | Motor-Pumpenaggregat |
US7562617B2 (en) * | 2006-05-15 | 2009-07-21 | Centipede Systems, Inc. | Mounting apparatus |
CN100513783C (zh) * | 2006-06-21 | 2009-07-15 | 王明显 | 多级隔膜泵 |
NL1033204C2 (nl) * | 2007-01-10 | 2008-07-11 | Weir Minerals Netherlands Bv | Enkelwerkende verdringerinrichting. |
JP4248003B2 (ja) * | 2007-03-27 | 2009-04-02 | 岡山県 | ポンプ |
CN101372957B (zh) * | 2007-08-24 | 2012-06-20 | 张坤林 | 可防卡死的气泵 |
WO2010069321A2 (en) | 2008-12-19 | 2010-06-24 | Stobbe Tech A/S | Electronically controlled diaphragm pump |
US8017409B2 (en) * | 2009-05-29 | 2011-09-13 | Ecolab Usa Inc. | Microflow analytical system |
GB2475879B (en) * | 2009-12-03 | 2012-02-15 | Power Ramps Ltd | Seal |
CH702436A1 (fr) * | 2009-12-23 | 2011-06-30 | Jean-Denis Rochat | Pompe doseuse a usage medical. |
JP5820145B2 (ja) * | 2011-05-20 | 2015-11-24 | 応研精工株式会社 | ダイヤフラムポンプ |
DE102011107580B4 (de) | 2011-07-16 | 2015-02-05 | Festo Ag & Co. Kg | Faltenbalg und Verfahren zur Herstellung eines Faltenbalges |
US9610392B2 (en) | 2012-06-08 | 2017-04-04 | Fresenius Medical Care Holdings, Inc. | Medical fluid cassettes and related systems and methods |
KR101374048B1 (ko) | 2012-06-14 | 2014-03-13 | 한국과학기술연구원 | 유체 펌핑 장치, 이를 이용하는 연료전지 장치 및 연료 가스 재순환 방법 |
DE102016201182A1 (de) | 2016-01-27 | 2017-07-27 | Siemens Aktiengesellschaft | Membranpumpe mit Staubansaugung von unten |
KR101746830B1 (ko) | 2016-03-11 | 2017-06-15 | 주식회사 나래나노텍 | 개선된 약액 가압 장치, 및 이를 구비한 약액 공급 장치 |
DE102016216012A1 (de) | 2016-08-25 | 2018-03-01 | Siemens Aktiengesellschaft | Membranpumpe mit porösem, gewölbtem Aluminiumfilter |
DE102016216006A1 (de) * | 2016-08-25 | 2018-03-01 | Siemens Aktiengesellschaft | Doppelmembran für eine Staubpumpe |
DE102016216016A1 (de) | 2016-08-25 | 2018-03-15 | Siemens Aktiengesellschaft | Herstellung eines porösen Aluminiumfilters für eine Membranpumpe |
RU197740U1 (ru) * | 2020-03-13 | 2020-05-25 | Общество с ограниченной ответственностью "Завод дозировочной техники "Ареопаг" | Насосная головка мембранного насоса |
CN111537280B (zh) * | 2020-04-09 | 2023-04-07 | 南京万德斯环保科技股份有限公司 | 一种膜隔非标管抽液系统及方法 |
Family Cites Families (24)
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DE337271C (de) * | 1918-02-05 | 1921-05-27 | Leybold S Nachfolger E | Membranpumpe mit mehreren Membranen |
US2414806A (en) * | 1942-09-07 | 1947-01-28 | Mining Process & Patent Co | Diaphragm pump |
US3027848A (en) * | 1959-07-13 | 1962-04-03 | Gen Motors Corp | Diaphragm pump |
FR1292254A (fr) * | 1961-03-20 | 1962-05-04 | Dba Sa | Compresseur à membrane |
US3387566A (en) * | 1966-01-10 | 1968-06-11 | Ici Australia Ltd | Fluid operated prime mover |
GB1214809A (en) * | 1967-02-08 | 1970-12-02 | Dunlop Co Ltd | Improvements in or relating to diaphragm pumps |
US3692437A (en) * | 1970-01-29 | 1972-09-19 | Itt | Pump |
DE2212322A1 (de) * | 1972-03-15 | 1973-09-20 | Erich Becker | Membranpumpe zur druck- oder vakuumerzeugung |
GB1418993A (en) * | 1972-03-08 | 1975-12-24 | Becker E | Diaphragm pump particularly for the generation of vacuum |
DE2408119A1 (de) * | 1973-02-21 | 1974-08-22 | Girling Ltd | Vakuum-bremsanlage fuer ein kraftfahrzeug |
FR2273961A1 (fr) * | 1974-06-06 | 1976-01-02 | Venditti Bernard | Dispositif d'etancheite pour pompes alternatives ou analogues |
DE2502566C3 (de) | 1975-01-23 | 1980-03-13 | Erich 7812 Bad Krozingen Becker | Membranpumpe |
US4086036A (en) * | 1976-05-17 | 1978-04-25 | Cole-Parmer Instrument Company | Diaphragm pump |
US4286932A (en) * | 1978-02-14 | 1981-09-01 | Nippondenso Co., Ltd. | Diaphragm pump |
JPS54134902U (de) * | 1978-03-13 | 1979-09-19 | ||
JPH0788815B2 (ja) * | 1984-08-25 | 1995-09-27 | アイシン精機株式会社 | ダイアフラム式バキユ−ムポンプ |
JPS61244884A (ja) * | 1985-04-24 | 1986-10-31 | Hitachi Ltd | バキユ−ムポンプ |
JPS63219886A (ja) * | 1987-03-09 | 1988-09-13 | Teijin Ltd | 真空ポンプ及びそれを用いた酸素富化装置 |
JPH032480A (ja) * | 1989-05-31 | 1991-01-08 | Matsushita Electric Ind Co Ltd | 宅配ロッカーシステム |
DE4026670C2 (de) * | 1990-08-23 | 1995-06-22 | Alcatel Hochvakuumtechnik Gmbh | Mechanische Vakuumpumpe |
EP0626516B1 (de) | 1993-04-15 | 1997-06-04 | KNF Neuberger GmbH | Schmiermittelfreie Vakuum-Pumpeinrichtung |
DE9305554U1 (de) * | 1993-04-15 | 1993-06-17 | KNF-Neuberger GmbH, 7800 Freiburg | Zweifach-Verdrängerpumpe |
DE4328559C5 (de) * | 1993-08-25 | 2004-11-25 | Knf-Neuberger Gmbh | Membranpumpe mit wenigstens zwei Membranen |
JP3002480U (ja) * | 1994-01-25 | 1994-09-27 | 白光株式会社 | ダイヤフラム式真空ポンプ及びこれを備えるはんだ除去器 |
-
1999
- 1999-08-26 DE DE19940498A patent/DE19940498A1/de not_active Withdrawn
-
2000
- 2000-07-14 DE DE50010984T patent/DE50010984D1/de not_active Expired - Lifetime
- 2000-07-14 US US10/069,473 patent/US6796215B1/en not_active Expired - Lifetime
- 2000-07-14 WO PCT/EP2000/006727 patent/WO2001014744A1/de active IP Right Grant
- 2000-07-14 EP EP00949341A patent/EP1206641B1/de not_active Expired - Lifetime
- 2000-07-14 JP JP2001518590A patent/JP4755374B2/ja not_active Expired - Fee Related
- 2000-08-24 TW TW089117133A patent/TW482873B/zh active
Also Published As
Publication number | Publication date |
---|---|
US6796215B1 (en) | 2004-09-28 |
DE19940498A1 (de) | 2001-03-22 |
WO2001014744A1 (de) | 2001-03-01 |
JP4755374B2 (ja) | 2011-08-24 |
EP1206641A1 (de) | 2002-05-22 |
DE50010984D1 (de) | 2005-09-22 |
JP2003507658A (ja) | 2003-02-25 |
TW482873B (en) | 2002-04-11 |
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