DE10332642A1 - Oscillating vacuum-displacement pump has spring-supported con-rod link to displacement body - Google Patents
Oscillating vacuum-displacement pump has spring-supported con-rod link to displacement body Download PDFInfo
- Publication number
- DE10332642A1 DE10332642A1 DE10332642A DE10332642A DE10332642A1 DE 10332642 A1 DE10332642 A1 DE 10332642A1 DE 10332642 A DE10332642 A DE 10332642A DE 10332642 A DE10332642 A DE 10332642A DE 10332642 A1 DE10332642 A1 DE 10332642A1
- Authority
- DE
- Germany
- Prior art keywords
- connecting rod
- displacement pump
- positive displacement
- oscillating vacuum
- compression
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/04—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads with elastic intermediate part of fluid cushion
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine oszillierende Vakuum-Verdrängerpumpe mit einem angetriebenen Pleuel, das einen Verdränger in einem Kompressionsraum bewegt.The The invention relates to an oscillating vacuum positive displacement pump with a driven connecting rod, which is a displacer in a compression chamber emotional.
Derartige Vakuum-Verdrängerpumpen sind als Kolbenpumpen, als Membranpumpen und als Pendelkolbenpumpen bekannt. Bei diesen Vakuum-Verdrängerpumpen sind der erreichbare Enddruck und das Saugvermögen stark vom Totraum abhängig. Zur Vermeidung von Verschleiß bzw. Zerstörung wird bei oszillierenden Vakuum-Verdrängerpumpen in der Kompressionsposition des Verdrängers ein möglichst geringer Abstand zwischen dem Verdränger und der gegenüberliegenden Bodenwand des Kompressionsraumes vorgesehen. Dieser Abstand macht jedoch ein gewisses Totvolumen aus, das den erreichbaren Enddruck und das Saugvermögen begrenzt.such Vacuum displacement pumps are as piston pumps, as diaphragm pumps and as reciprocating piston pumps known. With these vacuum displacement pumps the achievable final pressure and the pumping speed are heavily dependent on dead space. to Avoidance of wear or destruction becomes in the compression position with oscillating vacuum positive displacement pumps the repressor one possible small distance between the displacer and the opposite Bottom wall of the compression space provided. This distance makes However, a certain dead volume, the achievable final pressure and the pumping speed limited.
Aufgabe der Erfindung ist es, eine verschleißarme oszillierende Vakuum-Verdrängerpumpe mit verbessertem Saugvermögen zu schaffen.task The invention is a low-wear oscillating vacuum positive displacement pump with improved pumping speed to accomplish.
Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Patentanspruches 1.These The object is achieved by the features of claim 1.
Bei der Vakuum-Verdrängerpumpe ist dem Pleuel ein in Schubrichtung wirkendes Federungselement und in Zugrichtung ein Anschlag zugeordnet. Das Pleuel ist in Schubrichtung nachgiebig gefedert und in Zugrichtung ungefedert. Wenn der Verdränger in seiner Kompressionsposition an die Bodenwand des Kompressionsraumes anschlägt, gibt das in Schubrichtung wirkende Federungselement des Pleuels entsprechend nach, so dass ein Verschleiß oder eine Zerstörung der Kompressionsraum-Bodenwand, des Verdrängers, des Pleuels, der das Pleuel antreibenden Kurbelwelle oder der die Kurbelwelle haltenden Lager erheblich reduziert bzw. ausgeschlossen wird. Durch die in Schubrichtung wirkende Pleuel-Federung kann der Totraum auf ein Minimum reduziert werden, ohne dass die Gefahr der Zerstörung bzw. der Verschleiß erhöht werden. Durch den in Zugrichtung wirkenden Anschlag ist sichergestellt, dass sich die Pleuelstange nicht über den Anschlagpunkt hinaus verlängern kann, so dass hierdurch das eingestellte Hubvolumen sichergestellt ist.at the vacuum positive displacement pump the connecting rod is an acting in the direction of thrust suspension element and assigned a stop in the pulling direction. The connecting rod is in thrust direction resilient sprung and unsprung in the pulling direction. When the displacer in its compression position to the bottom wall of the compression space strikes, gives the acting in the direction of thrust suspension element of the connecting rod according to, so that wear or destruction of the Compression space floor wall, the displacer, the connecting rod, the Connecting rod driving crankshaft or holding the crankshaft Warehouse significantly reduced or excluded. By the in Thrust direction acting conrod suspension the dead space can be reduced to a minimum, without the Danger of destruction or the wear can be increased. By acting in the pulling direction stop ensures that the connecting rod is not over Extend the anchor point can, so that thereby ensures the set displacement is.
Gemäß einer bevorzugten Ausgestaltung ist das Federungselement in Druckrichtung auf den Anschlag vorgespannt. Hierdurch wird eine Kraftschwelle eingestellt, die zum Einfedern des Federungselementes, d.h. zum Zusammenfedern des Pleuels aufgebracht werden muss. Die Vorspannung kann derart eingestellt sein, dass das Federungselement durch den Kompressionsdruck in dem Kompressionsraum nicht zusammengedrückt wird, sondern erst bei nennenswerter Überschreitung des bei maximalem Kompressionsdruck auf den Verdränger wirkenden Druckkraft-Wertes. Die Federkraft des Federungselementes kann relativ klein ausgelegt werden, da die von der Pleuelstange zu übertragenden Druckkräfte im Betrieb unter Vakuum gering sind, wohingegen die Zugkräfte relativ hoch sind.According to one preferred embodiment, the suspension element in the printing direction biased to the stop. This will cause a force threshold adjusted to the compression of the suspension element, i. to the Collapsing the connecting rod must be applied. The bias can be set so that the suspension element by the compression pressure is not compressed in the compression space, but only at significant excess of the acting at maximum compression pressure on the displacer Pressure force value. The spring force of the suspension element can be relatively be designed small, since the pressure to be transmitted from the connecting rod during operation under vacuum are low, whereas the tensile forces are relatively high.
Vorzugsweise ist der Anschlag derart angeordnet, dass der Verdränger in seiner Kompressionsposition an eine Kompressionsraum-Bodenwand anschlägt. Hierdurch wird der Totraum auf annähernd Null gebracht. Dadurch wird ein niedriger Enddruck und ein hohes Saugvermögen realisiert.Preferably the stop is arranged such that the displacer in strikes its compression position against a compression space bottom wall. hereby the dead space will be close to zero brought. As a result, a low final pressure and a high pumping speed is realized.
Gemäß einer bevorzugten Ausgestaltung ist das Pleuel eine teleskopierbare Stange. Die Stange ist nur in axialer Richtung teleskopierbar.According to one preferred embodiment, the connecting rod is a telescopic rod. The rod is telescopic only in the axial direction.
Zur Dämpfung des Federungselementes kann dem Pleuel ein Dämpfungselement parallel zu dem Federungselement zugeordnet sein. Auf diese Weise wird ein axiales Schwingen des Pleuels vermieden, wenn das Federungselement zusammengedrückt wird.to damping the suspension element, the connecting rod, a damping element parallel to the Be assigned to suspension element. In this way, an axial Swinging of the connecting rod avoided when the suspension element is compressed.
Die oszillierende Vakuum-Verdrängerpumpe kann als Kolbenpumpe, als Membranpumpe oder als Pendelkolbenpumpe ausgebildet sein.The oscillating vacuum positive displacement pump can designed as a piston pump, as a diaphragm pump or as a reciprocating piston pump be.
Im Folgenden werden unter Bezugnahme auf die Zeichnungen zwei Ausführungsbeispiele der Erfindung näher erläutert.in the Two embodiments will now be described with reference to the drawings closer to the invention explained.
Es zeigen:It demonstrate:
In
Die
Membranpumpe weist eine Antriebswelle
Ein
Pleuel
Der
Pleuelkopf
Der
Verdränger
In
dem Ventildeckel
Der
Anschlag
Die
Federkraft des Federungselementes
Die
Axialfederung
In
Als
Verdränger
Die
Funktionsweise des Pleuels
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10332642A DE10332642A1 (en) | 2003-07-18 | 2003-07-18 | Oscillating vacuum-displacement pump has spring-supported con-rod link to displacement body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10332642A DE10332642A1 (en) | 2003-07-18 | 2003-07-18 | Oscillating vacuum-displacement pump has spring-supported con-rod link to displacement body |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10332642A1 true DE10332642A1 (en) | 2005-02-03 |
Family
ID=33560198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10332642A Withdrawn DE10332642A1 (en) | 2003-07-18 | 2003-07-18 | Oscillating vacuum-displacement pump has spring-supported con-rod link to displacement body |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10332642A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2889864A1 (en) * | 2005-08-19 | 2007-02-23 | Peugeot Citroen Automobiles Sa | Connecting rod for e.g. petrol internal combustion engine, has reversible compression deformation unit with guiding unit fixed to rod base on which sliding unit slides, and elastic connection unit disposed between rod head and base |
DE102007005736A1 (en) * | 2007-01-31 | 2008-08-14 | Gardner Denver Thomas Gmbh | Displacement pump for delivering a fluid with automatic adjustment to the compressibility of this fluid |
DE102015205061A1 (en) * | 2015-03-20 | 2016-09-22 | Continental Teves Ag & Co. Ohg | Motor pump unit with a membrane unit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE487138C (en) * | 1929-11-29 | Adolf Luethi | Connecting rod with shock-absorbing springs located inside the piston | |
DE29501729U1 (en) * | 1995-02-03 | 1995-03-30 | Moser, Josef, 85435 Erding | Connecting rod of a reciprocating piston internal combustion engine |
DE19955688A1 (en) * | 1999-11-19 | 2001-05-23 | Leybold Vakuum Gmbh | Piston vacuum pump comprises a piston and a connecting rod which are joined to one another by means of an elastic unit |
DE10155776A1 (en) * | 2001-11-14 | 2003-05-22 | Helmut Obieglo | Piston assembly, to pump or lightly compress a gas medium, has an eccentric or crank to drive the piston in its cylinder coupled to a spring transmission to the piston |
-
2003
- 2003-07-18 DE DE10332642A patent/DE10332642A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE487138C (en) * | 1929-11-29 | Adolf Luethi | Connecting rod with shock-absorbing springs located inside the piston | |
DE29501729U1 (en) * | 1995-02-03 | 1995-03-30 | Moser, Josef, 85435 Erding | Connecting rod of a reciprocating piston internal combustion engine |
DE19955688A1 (en) * | 1999-11-19 | 2001-05-23 | Leybold Vakuum Gmbh | Piston vacuum pump comprises a piston and a connecting rod which are joined to one another by means of an elastic unit |
DE10155776A1 (en) * | 2001-11-14 | 2003-05-22 | Helmut Obieglo | Piston assembly, to pump or lightly compress a gas medium, has an eccentric or crank to drive the piston in its cylinder coupled to a spring transmission to the piston |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2889864A1 (en) * | 2005-08-19 | 2007-02-23 | Peugeot Citroen Automobiles Sa | Connecting rod for e.g. petrol internal combustion engine, has reversible compression deformation unit with guiding unit fixed to rod base on which sliding unit slides, and elastic connection unit disposed between rod head and base |
DE102007005736A1 (en) * | 2007-01-31 | 2008-08-14 | Gardner Denver Thomas Gmbh | Displacement pump for delivering a fluid with automatic adjustment to the compressibility of this fluid |
DE102015205061A1 (en) * | 2015-03-20 | 2016-09-22 | Continental Teves Ag & Co. Ohg | Motor pump unit with a membrane unit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3852260T2 (en) | Pump and valve. | |
EP1169572A1 (en) | Piston vacuum pump with a gas inlet and a gas outlet | |
DE1528474B1 (en) | Hydraulic control device on a diaphragm pump | |
DE4310062A1 (en) | Radial piston machine | |
DE2745470C3 (en) | Pump valve head | |
DE10332642A1 (en) | Oscillating vacuum-displacement pump has spring-supported con-rod link to displacement body | |
DE10005929C2 (en) | Compressor for an automotive air spring system | |
DE2412719A1 (en) | Open-top piston for hydraulic pump - contains cushioning plunger throttling flow to low pressure oil when piston near top dead centre | |
DE19743747B4 (en) | piston pump | |
EP2918835B1 (en) | Diaphragm pump | |
DE2336973A1 (en) | Radial piston pump for liquid discharge - has plastic impact absorbing insert in base of piston | |
DE102007038523A1 (en) | Fuel high-pressure pump for fuel injection system of internal-combustion engine, has pump elements comprising high pressure chamber, where surface of spring plate of pump elements stays in connection with plunger area of pump elements | |
DE19909302C1 (en) | Free piston pump assembly has a hollow zone in the piston to take a mechanical resonator suspended on coil springs with oscillation in the direction of piston movement for transfer of housing oscillation effectively to a low-mass piston | |
DE4002452A1 (en) | Fuel pump for engine - has combination of membrane pump and piston pump driven via tappet | |
DE4304637C2 (en) | Injection pump for diesel engines | |
DE1653586C3 (en) | Reciprocating piston pump | |
DE1453543A1 (en) | Diaphragm pump | |
DE152963C (en) | ||
DE3709785C2 (en) | Displacement pump with oscillating displacers | |
DE2537742B2 (en) | Lubricating device for a piston internal combustion engine | |
DE4425402A1 (en) | Hydraulic pump for hydraulic brake system | |
AT291778B (en) | Fire fighting centrifugal pump | |
DE1925307A1 (en) | Hydraulic piston pump, especially radial piston pump | |
DE183119C (en) | ||
DE512990C (en) | Piston pumps, especially fuel injection pumps, for internal combustion engines |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination |