EP0733802B1 - Membranpumpe mit einer Formmembran - Google Patents
Membranpumpe mit einer Formmembran Download PDFInfo
- Publication number
- EP0733802B1 EP0733802B1 EP96101648A EP96101648A EP0733802B1 EP 0733802 B1 EP0733802 B1 EP 0733802B1 EP 96101648 A EP96101648 A EP 96101648A EP 96101648 A EP96101648 A EP 96101648A EP 0733802 B1 EP0733802 B1 EP 0733802B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ribs
- stabilising
- diaphragm
- radial
- underside
- 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
- 239000012528 membrane Substances 0.000 title description 96
- 238000005086 pumping Methods 0.000 claims description 16
- 230000007704 transition Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 4
- 230000003019 stabilising effect Effects 0.000 claims 19
- 239000012858 resilient material Substances 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 description 49
- 230000006641 stabilisation Effects 0.000 description 9
- 238000011105 stabilization Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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
- F04B43/0054—Special features particularities of the flexible members
Definitions
- the invention relates to a diaphragm pump with a Form membrane made of elastic material in its central area is reinforced in the stroke direction and flexible around it Has ring area, the outside with a clamping edge on Pump housing is held, which shaped membrane by means of a connecting rods attacking their central area or the like Lifting device from an upper to a lower dead center position and can be reversely deflected, in particular that of the pump chamber facing membrane top in the central area and the adjacent Wall of the pump chamber are geometrically adapted to each other and on the underside of the membrane facing away from the pump chamber, at least in Ring area radial ribs are provided for stabilization.
- Such a diaphragm pump is already known from DE 40 07 932 C2, in which the wall of the pump chamber facing the molded membrane is approximately spherical in its central region and the molded membrane in its associated central area geometrically on the top of this spherical pump chamber area is adjusted so that the shaped membrane with its top in the top dead center position at least in its central area at least almost completely on the wall of the pump room hugs. So that during the pumping in the mold membrane occurring flexing work can be kept as small as possible and the diaphragm pump is still sufficient during the delivery stroke Has suction volume, is the ring area of the molded membrane comparatively thin and flexible, during the Central area is reinforced in the stroke direction to at Stroke to achieve a kind of piston effect.
- the previously known diaphragm pump has radial ribs on the underside of the ring area. that should stabilize it.
- the radial ribs are spaced as far apart from each other arranged that the membrane in the ring area is sufficient Flexibility, there is too much bulging of the ring area, so that at low suction pressures the volumetric Efficiency and the pumping speed of the pump accordingly is reduced. It can also cause vibrations in the membrane occur, on the one hand, to a heating of the molded membrane lead and on the other hand also an abutment of the molded membrane on the adjacent pump room wall. A toast the form membrane on the pump chamber wall is mainly because of this undesirable as this leads to increased noise also leads to premature wear of the molded membrane. Particles which have been removed from the shaped membrane can also be the Function of the intake and exhaust valves affect what the Quality of the vacuum that can be achieved with the diaphragm pump reduced.
- the stabilizing ribs are either aligned in the circumferential direction, that is to say arranged concentrically to the longitudinal axis of the membrane, or that they are aligned tangentially to the circumferential direction or somewhat obliquely to the circumferential direction, for example spirally.
- the ring area of the shaped membrane is supported both by the radial ribs and by the stabilizing ribs running transversely to it.
- the radial ribs can therefore be arranged at a sufficiently large distance from one another, so that there is a particularly flexible ring area which causes only comparatively little flexing work when the pump is in operation.
- the membrane areas lying between the radial ribs are thus supported in the circumferential direction by the stabilizing ribs.
- the stabilizing ribs are thus arranged in such a way that the ring area of the molded membrane is flexible around a circumferential line, but has a comparatively great bending stiffness in a direction running transverse to it. This results in a smoothly actuated molded membrane, which converts only a very small proportion of the lifting energy applied into flexing work, and which nevertheless prevents vibrations and an impact on the molded membrane at top dead center on the adjacent pump chamber wall.
- the molded membrane has a longer service life and, on the other hand, the action of the valves of the membrane pump is not so quickly impaired by membrane particles rubbed off the molded membrane. It is also advantageous that the slight arching of the ring area during the suction or lifting movement improves the volumetric efficiency and the pumping speed of the diaphragm pump, particularly at low pressures.
- the diaphragm pump according to the invention is therefore particularly suitable for use as a vacuum pump.
- the stabilizing ribs enable a significant reduction in the deformation of the membrane, especially in the area of the inlet and outlet openings of the pump chamber.
- An advantageous embodiment provides that between adjacent Radial ribs a plurality of stabilizing ribs offset radially to one another are arranged. The on the ring area below Forces acting under vacuum can then be evenly distributed by the Stabilizing ribs added and over the radial ribs into the pump housing or the central area of the Form membrane are introduced.
- a further development of the invention provides that the bending moment the radial ribs around a circumferential line of the molding membrane in each case is larger than that of a single stabilization rib by one this intersecting radius of the shaped membrane.
- the radial ribs are So executed more rigid than the stabilizing ribs, wherein several stabilizing ribs with a common one Interact radial rib and are supported on this.
- the number of radial ribs can thus be reduced, so that a more flexible by a circumference, but still by one Diameter line results in a comparatively rigid ring area, which despite low flexing work losses even at working pressures good pumping speed in the displacement of just a few millibars enables.
- the greater bending moment compared to the stabilizing ribs the radial ribs can be achieved particularly simply by that the height of the oriented in the direction of the membrane longitudinal axis Radial ribs is greater than the height of at least one, in particular the stabilization rib arranged on the outside in the radial direction.
- the Stabilizing ribs in the circumferential direction on the underside of the membrane circulate closed and cross or penetrate the radial ribs.
- One embodiment provides that the underside of the in Stabilization rib arranged radially on the inside approximately flush connects to the underside of the radial ribs. That for them Rubber material used can then be used during the molding process Vulcanization process better in the corner areas between the Stabilizing and radial ribs flow.
- the central area has a shoulder on the underside of the membrane that has a preferably step-shaped transition area to Ring area forms.
- the ring area then stands on the central area of the shaped membrane in the central area despite the reduced in size in this area Membrane diameter a sufficient force transmission area for Available so that the tensile stresses occurring in this area are reduced.
- the stabilizing ribs and / or the stabilizing protrusions on the other hand seen rectangular cross section in the circumferential direction of the shaped membrane preferred to achieve greater bending stiffness.
- a particularly advantageous embodiment provides that the central area is narrowed downwards at its bottom and there is preferably approximately frustoconical, that the central area at its bottom essentially has radially-axially arranged stabilizing projections and that this is outward in the radial ribs of the Continue ring area.
- the from the stabilizing ribs on the radial forces transmitted support forces can then better in the central area are initiated so that a deflection or arching of the ring area in the direction of the pump chamber Applying vacuum to the molded membrane even more effectively is counteracted.
- a membrane pump designated as a whole by 1 has a shaped membrane 2 made of elastic material, which in its Central area 3 is reinforced in the stroke direction 4 and around this Central area 3 has a flexible ring area 5 around. This is on its outer circumference with a clamping edge 6 on the pump housing between the crankcase 7 and the pump head 8 clamped.
- a driver core trained molded core 9 vulcanized at its threaded connector 10 attacks a connecting rod 11 with which the shaped membrane 2 from a upper to a lower dead center position and vice versa.
- the pump head 8 has an inlet channel 12 and an outlet channel 13 for the medium to be pumped or extracted, each in the through the pump wall 14 of the pump head 8 and the Diaphragm top 15 open limited pump chamber 16.
- the Einund Outlet channels 12, 13 are in a known manner with inclusion Exhaust valves provided for the sake of Clarity are not shown in Figure 1.
- the pump chamber 16 facing Membrane top 15 in the central area 3 and the adjacent Pump chamber wall 14 geometrically adapted to one another. Both are the pump chamber wall 14, as well as the molded membrane 2 in each case central area spherical.
- the shaped membrane 2 faces away from the pump chamber 16 Bottom 17 in the ring area 5 a total of 18 evenly over the Circumference of the annular region 5 distributed radial ribs 18 on the are combined with four concentrically and at equal intervals from one another on the underside 17 of the ring area 5 Stabilizing ribs 19.
- the support ribs 19 enable through the recesses between them, on which the Molded membrane 2 has only a comparatively small wall thickness, a particularly flexible around a circumferential line in the ring area 5 Shaped membrane 2, which is only a very small one during the lifting movement Share of the lifting energy applied in flexing work.
- the stabilization ribs 19 point around a diameter line a comparatively high bending stiffness, so that under Vacuum the deflection or curvature of the ring area 5 in Direction of the pump chamber 16 is reduced.
- the diaphragm pump 1 By combining the radial ribs 18 with the circumferential direction extending support ribs 19 has the diaphragm pump 1 in particular improved volumetric at low intake pressures Efficiency that results in greater pumping speed.
- Figure 5 shows the pumping speed curve 24 of the invention Diaphragm pump 1 in comparison to the pumping speed curve 25 from DE-PS 40 07 932 C2 known membrane pump, the radial ribs 18, but no stabilizing ribs oriented in the circumferential direction 19 has.
- the pumping speed is shown in liters per hour as a function of the absolute value given in millibars Suction pressure of the diaphragm pump 1.
- Figure 5 shows that the radial and stabilizing ribs equipped diaphragm pump 1 compared to only radial ribs 18 diaphragm pump especially at suction pressures below of 10 mbar absolutely a significantly improved pumping speed having.
- the minimum vacuum against which the Diaphragm pump 1 can just suck against the previously known diaphragm pump reduced by about a third.
- the Diaphragm pump 1 according to the invention is therefore even better as a vacuum pump and can in particular also be used as a backing pump for a Turbo molecular pump can be used.
- the inner stabilizing rib 19 To make the transition to the thicker compared to the ring area 5 trained trained central area 3, has the inner stabilizing rib 19 to a greater height c than the height b of the outer stabilizing ribs 19. This gives during the lifting movement of the shaped membrane 2 in the transition area between the ring and central area a more even load of the elastic membrane material. If necessary, for the Height of the individual stabilization ribs 19 additional gradations be provided, this height with increasing distance from Central area 3 is getting smaller.
- the height c is the inner stabilizing ribs 19 are preferably chosen somewhat smaller than the thickness d of the adjacent stabilizing ribs 19 Outer edge of the central area 3.
- the radial ribs 18 between the inner stabilizing rib 19 and the paragraph 20 bevelled on its underside, so that in this area the height of the radial ribs 18 radially outwards decreases. Between the inner stabilizing rib 19 and the clamping edge 6, however, the radial ribs 18 have one constant rib height.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Description
Obwohl sich solche mit Radialrippen ausgestatteten Formmembranen in der Praxis in vielerlei Hinsicht bewährt haben, so hat sich doch gezeigt, daß besonders bei Vakuumpumpen, die als Vorpumpen für Turbo-Molekularpumpen verwendet werden, ein unerwünschtes Durchwölben der Membran nur dann in ausreichendem Maße verhindert werden kann, wenn an der Unterseite des Ringbereichs eine Vielzahl von Radialrippen dicht benachbart zueinander angeordnet sind. Dies hat jedoch den Nachteil, daß die Flexibilität des Ringbereichs entsprechend verringert wird, wodurch sich die Walkarbeit, die Erwärmung der Membran und der damit verbundene Verschleiß der Membrane erhöhen.
Die zwischen den Radialrippen liegenden Membranbereiche werden also durch die Stabilisierungsrippen in Umfangsrichtung abgestützt. Die Stabilisierungsrippen sind also gezielt so angeordnet, daß der Ringbereich der Formmembran um eine Umfangslinie flexibel ist, jedoch in einer quer dazu verlaufenden Richtung eine vergleichsweise große Biegesteifigkeit aufweist. Somit ergibt sich eine leichtgängig betätigbare Formmembran, die nur einen sehr kleinen Anteil der aufgebrachten Hubenergie in Walkarbeit umsetzt und bei der dennoch Schwingungen sowie ein Anstoßen der Formmembran im oberen Totpunkt an die benachbarte Pumpraumwand vermieden werden. Die Formmembran weist dadurch einerseits eine höhere Lebensdauer auf und andererseits wird die Wirkung der Ventile der Membranpumpe nicht so schnell durch von der Formmembran abgeriebene Membranpartikel beeinträchtigt. Vorteilhaft ist auch, daß durch die geringe Durchwölbung des Ringbereichs während der Saug- beziehungsweise Hubbewegung der volumetrische Wirkungsgrad und das Saugvermögen der Membranpumpe insbesondere bei niedrigen Drücken verbessert wird. Die erfindungsgemäße Membranpumpe eignet sich deshalb besonders für eine Verwendung als Vakuumpumpe. Dabei ermöglichen die Stabilisierungsrippen speziell im Bereich der Einlaß- und Auslaßöffnung des Pumpraumes eine deutliche Reduzierung der Verformung der Membran.
- Fig. 1
- eine im Schnitt gehaltene Teilansicht einer Membranpumpe mit einer Formmembran, deren äußerer Membran-Randbereich zwischen dem Kurbelgehäuse der Membranpumpe und dem Pumpenkopf eingespannt ist und die mit einem nur teilweise dargestellten Pleuel in Antriebsverbindung steht,
- Fig. 2
- eine Ansicht auf die Unterseite der Formmembran nach Figur 1, welche die in Umfangsrichtung verlaufenden Stabilisierungsrippen sowie die Radialrippen des Ringbereichs besonders gut erkennen lassen, welche sich nach innen hin in den Stabilisierungsvorsprüngen des Zentralbereichs fortsetzen,
- Fig. 3
- eine Seitenansicht der in Figur 1 gezeigten Formmembran in Ruhestellung, wobei der Ringbereich teilweise im Schnitt dargestellt ist, damit die Anordnung der Stabilisierungsrippen sichtbar ist,
- Fig. 4
- eine Detailvergrößerung des in Figur 3 mit X gekennzeichneten Membranebereichs, wobei die unterschiedliche Höhe der einzelnen Stabilisierungsrippen und der Absatz des Zentralbereichs besonders gut erkennbar sind, der den Übergang zum Ringbereich bildet und
- Fig. 5
- das Saugvermögen der erfindungsgemäßen Membranpumpe als Funktion des Saugdruckes, wobei zum Vergleich auch die Saugvermögenskurve der aus DE-40 07 932 C2 vorbekannten Membranepumpe in das Diagramm eingezeichnet ist.
Claims (14)
- Membranpumpe (1) mit einer Formmembran (2) aus elastischem Material, die in ihrem Zentralbereich (3) in Hubrichtung (4) verstärkt ist und um diesen herum einen flexiblen Ringbereich (5) hat, der außenseitig mit einem Einspannrand (6) am Pumpengehäuse gehalten ist, welche Formmembran (2) mittels eines an ihrem Zentralbereich (3) angreifenden Pleuels (11) oder dergleichen Hubvorrichtung von einer oberen in eine untere Totpunktlage und umgekehrt auslenkbar ist, wobei insbesondere die dem Pumpraum (16) zugewandte MembranOberseite (15) im Zentralbereich (3) sowie die benachbarte Pumpraumwand (14) geometrisch aneinander angepaßt sind und an der dem Pumpraum (16) abgewandten Membran-Unterseite (17) zumindest im Ringbereich (5) Radialrippen (18) zur Stabilisierung vorgesehen sind, dadurch gekennzeichnet, daß an der Unterseite (17) des Ringbereichs (5) zwischen benachbarten Radialrippen (18) wenigstens eine im wesentlichen in Umfangsrichtung verlaufende Stabilisierungsrippe (19) angeordnet ist.
- Membranpumpe nach Anspruch 1, dadurch gekennzeichnet, daß zwischen benachbarten Radialrippen (18) mehrere, radial zueinander versetzte Stabilisierungsrippen (19) angeordnet sind.
- Membranpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Biegemoment der Radialrippen (18) um eine Umfangslinie der Formmembran (2) jeweils größer ist als das einer einzelnen Stabilisierungsrippe (19) um einen diese kreuzenden Radius der Formmembran (2).
- Membranpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die in Richtung der Membran-Längsachse (21) orientierte Höhe (a) der Radialrippen größer ist als die Höhe (b) wenigstens einer, insbesondere der in Radialrichtung außen angeordneten Stabilisierungsrippe (19).
- Membranpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Stabilisierungsrippen (19) in Umfangsrichtung an der Membranunterseite (17) geschlossen umlaufen und die Radialrippen (18) kreuzen.
- Membranpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zumindest die in Radialrichtung innen angeordnete Stabilisierungsrippe (19) des Ringbereichs (5) in Axialrichtung der Formmembran (2) eine größere Höhe (c) aufweist als wenigstens eine im Vergleich dazu weiter außen angeordnete Stabilisierungsrippe (19).
- Membranpumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Unterseite der in Radialrichtung innen angeordneten Stabilisierungsrippe (19) etwa bündig an die Unterseite der Radialrippe (18) anschließt.
- Membranpumpe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die in Axialrichtung der Formmembran (2) orientierte Höhe (c) der inneren Stabilisierungsrippe (19) etwa genau so groß oder etwas kleiner ist als die Dicke (d) des dieser Stabilisierungsrippe (19) benachbarten äußeren Randbereichs des Zentralbereichs (3).
- Membranpumpe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Unterseite der Radialrippen (18) bündig an die Unterseite des Absatzes (20) anschließt und daß die Höhe der Radialrippen (18) zumindest zwischen dem Absatz (20) und der in Radialrichtung inneren Stabilisierungsrippe (19) radial nach außen abnimmt.
- Membranpumpe nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Unterseite der Radialrippen (18) an die Unterseite des Absatzes (20) anschließt und daß die Höhe der Radialrippen (18) zumindest zwischen dem Absatz (20) und der in Radialrichtung inneren Stabilisierungsrippe (19) radial nach außen hin abnimmt.
- Membranpumpe nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die vorzugsweise in gleichen Abständen radial zueinander versetzt angeordneten Stabilisierungsrippen (19) in Radialrichtung etwa ein wellenförmiges Profil mit gerundeten Übergängen zwischen den einzelnen Stabilisierungsrippen (19) bilden.
- Membranpumpe nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß sich der Zentralbereich (3) an seiner Unterseite (17) nach unten hin verengt und dort vorzugsweise etwa kegelstumpfförmig ausgebildet ist, daß der Zentralbereich (3) an seiner Unterseite (17) im wesentlichen radial-axial angeordnete Stabilisierungsvorsprünge (22) aufweist und daß sich diese nach außen hin in den Radialrippen (18) des Ringbereichs (5) fortsetzen.
- Membranpumpe nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Stabilisierungsrippen (19) und/oder die Stabilisierungsvorsprünge (22) in Umfangsrichtung der Formmembran (2) gesehen einen etwa rechteckigen Querschnitt aufweisen.
- Membranpumpe nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Radialrippen (18) etwa im Abstand von 20° zueinander versetzt gleichmäßig über den Umfang der Formmembran (2) verteilt angeordnet sind und daß jeweils zwischen benachbarten Radialrippen (18) vier radial zueinander versetzte Stabilisierungsrippen (19) vorgesehen sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19510828 | 1995-03-24 | ||
| DE19510828A DE19510828C2 (de) | 1995-03-24 | 1995-03-24 | Membranpumpe mit einer Formmembran |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0733802A1 EP0733802A1 (de) | 1996-09-25 |
| EP0733802B1 true EP0733802B1 (de) | 1998-08-26 |
Family
ID=7757644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96101648A Expired - Lifetime EP0733802B1 (de) | 1995-03-24 | 1996-02-06 | Membranpumpe mit einer Formmembran |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5699717A (de) |
| EP (1) | EP0733802B1 (de) |
| JP (1) | JPH08261156A (de) |
| DE (2) | DE19510828C2 (de) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29612117U1 (de) * | 1996-07-11 | 1996-09-12 | ASF THOMAS Industries GmbH, 82178 Puchheim | Membrane für eine Membranpumpe |
| DE19647882A1 (de) * | 1996-11-20 | 1998-05-28 | Knf Neuberger Gmbh | Membranpumpe |
| US6067893A (en) * | 1998-03-10 | 2000-05-30 | Westinghouse Air Brake Company | Ribbed diaphragm |
| DE19906317C1 (de) * | 1999-02-16 | 2000-10-19 | Knf Flodos Ag Sursee | Membranpumpe |
| US6295918B1 (en) * | 1999-10-15 | 2001-10-02 | John M. Simmons | Suspended diaphragm |
| DE50112760D1 (de) | 2001-01-02 | 2007-09-06 | Medela Holding Ag | Membranpumpe |
| DE10227192B4 (de) * | 2002-06-18 | 2009-08-06 | Ulman Dichtungstechnik Gmbh | Verbundmembran für Membranpumpen |
| DE10227193B4 (de) * | 2002-06-18 | 2007-05-10 | Ulman Dichtungstechnik Gmbh | Verbundmembran für Membranpumpen |
| US6748848B1 (en) * | 2002-12-11 | 2004-06-15 | Gits Manufacturing Company, Llc | Waste gate valve actuator |
| DE10312899A1 (de) | 2003-03-22 | 2004-10-07 | Knf Neuberger Gmbh | Membranpumpe |
| DE20307457U1 (de) * | 2003-05-13 | 2003-07-31 | GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG, 74653 Ingelfingen | Druckstück für ein Membranventil |
| ITTO20070440A1 (it) | 2007-06-20 | 2007-09-19 | Giorgio Tosini | Coperchio flessibile a tenuta contro gli agenti atmosferici. |
| US20090001638A1 (en) * | 2007-06-28 | 2009-01-01 | Semaan Gilbert A | Bellows structure |
| CA2722592C (en) | 2008-05-16 | 2016-05-03 | Joe Santa & Associates Pty Limited | A valve and diaphragm for a pump |
| DE202008007700U1 (de) * | 2008-06-10 | 2009-10-22 | Mann+Hummel Gmbh | Handpumpe zum Pumpen von Kraftstoff |
| CN104791226A (zh) * | 2014-01-16 | 2015-07-22 | 蔡应麟 | 隔膜增压泵的减震构造 |
| US20150198154A1 (en) * | 2014-01-16 | 2015-07-16 | Ying Lin Cai | Vibration-reducing structure for compressing diaphragm pump |
| CN104791235B (zh) * | 2014-01-16 | 2018-10-26 | 蔡应麟 | 隔膜增压泵的减震方法 |
| JP6080080B2 (ja) * | 2014-05-20 | 2017-02-15 | 蔡応麟 | 4圧縮チャンバダイアフラムポンプの振動低減構造 |
| US10173183B2 (en) | 2014-09-11 | 2019-01-08 | Flowserve Management Company | Diaphragm pump with improved tank recirculation |
| US9896829B2 (en) | 2014-09-12 | 2018-02-20 | Zurn Industries, Llc | Flush valve diaphragm |
| JP6412460B2 (ja) | 2015-04-14 | 2018-10-24 | 株式会社Soken | 走行路推定装置 |
| TWI659719B (zh) * | 2017-02-09 | 2019-05-21 | 瑞士商耐斯泰克公司 | 用於飲料製備模組之薄膜泵 |
| KR102734939B1 (ko) * | 2017-02-17 | 2024-11-28 | 한온시스템 주식회사 | 사판식 압축기의 리어 헤드 |
| US10677238B2 (en) * | 2017-11-08 | 2020-06-09 | Ingersoll-Rand Industrial U.S., Inc. | Filled resin layer separated pump housing |
| US10859540B2 (en) * | 2018-08-03 | 2020-12-08 | Chromatography Research Supplies, Inc. | Duckbill septum |
| DE102020126241B4 (de) * | 2020-10-07 | 2026-03-19 | Alfmeier Präzision SE | Membrananordnung mit um den Membrankörper umlaufendem Ring sowie Sitzanordnung und Pumpenanordnung |
| DE102022212934A1 (de) * | 2022-12-01 | 2024-06-06 | Robert Bosch Gesellschaft mit beschränkter Haftung | Membranpumpe |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840339A (en) * | 1953-05-13 | 1958-06-24 | Saunders Valve Co Ltd | Diaphragm valves and diaphragms therefor |
| US3135173A (en) * | 1961-10-26 | 1964-06-02 | Midland Ross Corp | Diaphragm |
| GB950678A (en) * | 1961-11-16 | 1964-02-26 | Nat Res Dev | Improvements in and relating to diaphragms and diaphragm-operated machines |
| US3911796A (en) * | 1973-02-12 | 1975-10-14 | Gates Rubber Co | Diaphragm |
| US3872777A (en) * | 1973-05-30 | 1975-03-25 | Berg Manufacturing Co | Diaphragm |
| US4270441A (en) * | 1978-10-30 | 1981-06-02 | Wilden Pump & Engineering Co. | Pump diaphragm |
| US4238992A (en) * | 1978-10-30 | 1980-12-16 | Wilden Pump & Engineering Co. | Pump diaphragm |
| JPS59577B2 (ja) * | 1979-08-13 | 1984-01-07 | 新日本製鐵株式会社 | 冷延鋼帯の短時間連続焼鈍方法 |
| DE3018687C2 (de) * | 1980-05-16 | 1986-10-30 | J. Wagner Gmbh, 7990 Friedrichshafen | Membran für Hochdruckförderpumpen, Kompressoren oder dgl. |
| JPS60211052A (ja) * | 1984-04-03 | 1985-10-23 | Hitachi Ltd | プラスチック成型用型材およびその製造方法 |
| DE4007932A1 (de) * | 1990-03-13 | 1991-09-19 | Knf Neuberger Gmbh | Membranpumpe mit einer formmembrane |
| US5335584A (en) * | 1993-03-30 | 1994-08-09 | Baird Dayne E | Improved diaphragm |
| US5349896A (en) * | 1993-06-14 | 1994-09-27 | W. L. Gore & Associates, Inc. | Pump diaphragm |
| DE4328559C5 (de) * | 1993-08-25 | 2004-11-25 | Knf-Neuberger Gmbh | Membranpumpe mit wenigstens zwei Membranen |
-
1995
- 1995-03-24 DE DE19510828A patent/DE19510828C2/de not_active Expired - Fee Related
-
1996
- 1996-02-06 DE DE59600466T patent/DE59600466D1/de not_active Expired - Lifetime
- 1996-02-06 EP EP96101648A patent/EP0733802B1/de not_active Expired - Lifetime
- 1996-03-20 US US08/618,959 patent/US5699717A/en not_active Expired - Lifetime
- 1996-03-22 JP JP8066714A patent/JPH08261156A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE19510828C2 (de) | 1998-12-24 |
| JPH08261156A (ja) | 1996-10-08 |
| DE59600466D1 (de) | 1998-10-01 |
| US5699717A (en) | 1997-12-23 |
| DE19510828A1 (de) | 1996-09-26 |
| EP0733802A1 (de) | 1996-09-25 |
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