EP1421283A1 - Flügelzellenpumpe - Google Patents
FlügelzellenpumpeInfo
- Publication number
- EP1421283A1 EP1421283A1 EP02776658A EP02776658A EP1421283A1 EP 1421283 A1 EP1421283 A1 EP 1421283A1 EP 02776658 A EP02776658 A EP 02776658A EP 02776658 A EP02776658 A EP 02776658A EP 1421283 A1 EP1421283 A1 EP 1421283A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- spring elements
- vane pump
- spring
- pump
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
- F01C21/0818—Vane tracking; control therefor
- F01C21/0827—Vane tracking; control therefor by mechanical means
- F01C21/0845—Vane tracking; control therefor by mechanical means comprising elastic means, e.g. springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
Definitions
- the present invention relates to a vane cell pump for conveying fluids and in particular a vane pump, which is used as a pre-feed unit for a storage injection system in motor vehicles.
- a prefeed pump is normally also used in addition to a high-pressure pump.
- vane pumps are used as pre-delivery pumps, which can provide the necessary volume flow and a corresponding pressure increase. Vane pumps can ensure the necessary operating points relatively well, especially at very low speeds (starter speed).
- the known vane pumps are made of metallic materials.
- the vane pump according to the invention for conveying fluids ensures that the vanes are always in contact with a ring, which provides the stroke curve of the pump, regardless of the speed.
- each wing is prestressed outwards by means of a spring element, so that the wing is constantly in contact with the stroke curve.
- the spring elements are designed such that they are an integral part of the rotor of the pump. As a result, the spring elements are captively connected to the rotor, so that there are significant cost reductions, in particular when the pump is installed. Due to this one-piece design of the rotor and spring elements, the rotor provided with spring elements can be easily assembled as a subassembly during assembly, without lengthy individual spring elements having to be placed in the rotor.
- the rotor is particularly preferably made of plastic and the spring elements are injected captively into the rotor.
- the rotor in particular, can be produced at particularly low cost, so that, together with the assembly advantages in comparison with conventional vane pumps made of metal, there is a cost reduction of over 40%.
- plastic the mechanical processing steps required for metallic materials can also be significantly reduced.
- plastic for the rotor it can in particular be ensured that the spring elements are injected captively into the rotor in such a way that there is no interruption in the rotor end faces. This ensures a homogeneous radial sealing length of the rotor to the neighboring parts of the pump.
- Spring tongues or coil springs are preferably used as spring elements.
- the spring elements are arranged in such a way that they are positioned in recesses in which the wings are guided at the bottom of the recesses, so that the wings are pretensioned outwards by the spring elements.
- the spring elements are attached to a ring.
- the spring elements are arranged on the outer circumference of the ring and protrude outwards. In particular the positioning of the spring elements, e.g. when plastic injection molding the rotor, significantly simplified.
- the spring elements are also advantageously made of spring steel or plastic. If the spring elements and the rotor are made of plastic, the spring elements can particularly preferably be injection molded simultaneously with the rotor, as a result of which further cost reductions can be achieved. In order to obtain manufacturing-related cost reductions for other components of the vane pump, the vanes and / or the cam ring and / or a side plate and / or a pump housing are preferably made of plastic. A thermoset is particularly preferably used as the plastic.
- the vane pump according to the invention is particularly preferred as a prefeed pump for a fuel storage injection system, such as a common rail system.
- Figure 1 is a schematic sectional view of a vane pump according to an embodiment of the present invention.
- Figure 2 is a schematic side view of the main components of the vane pump shown in Figure 1;
- Figure 3 is a sectional view taken along line B-B of Figure
- Figure 4 is a sectional view taken along line A-A of Figure
- Figure 5 is a partial sectional view taken along the line C-C in Figure 2;
- FIG. 6 shows a perspective view of the spring element component
- Figure 7 is an exploded perspective view of the main components of the vane pump.
- the vane pump comprises a rotor 2, which is driven in a known manner via a drive shaft 9.
- a plurality of cutouts 10 are formed on the rotor 2, in each of which a wing 4 is arranged.
- the wings 4 are guided in the radially formed recesses 10.
- the rotor 2 is further arranged in a stroke curve element designed as a ring 3.
- the cam ring 3 is an integral part of a housing 8 of the vane pump.
- the cam ring 3 can also be designed as a separate component.
- the cam ring 3 is arranged eccentrically to the rotor 2, so that the chambers of the pump which are separated from one another by the individual vanes are formed in a known manner.
- a spring component is further integrally formed in the rotor 2, which consists of a spring ring 6 and spring elements 5 arranged thereon.
- the spring component is shown in a perspective view.
- the spring elements 5 are arranged on the outer circumference of the ring 6 and provide a spring force in the radial direction of the ring 6.
- the spring component is made of spring steel and can be easily punched out and Bending the spring elements 5 by about 90 ° to the ring surface.
- the spring elements 5 are each arranged in the recesses 10 of the rotor 2 such that they bias the wings 4 radially outwards. This ensures that the vanes 4 are in contact with the stroke curve of the ring 3 in every position and at every speed of the rotor 2 (cf. FIG. 2).
- the rotor 2 is made of plastic and the spring component is completely injected into the rotor as a prefabricated assembly. This configuration of the rotor also ensures that the two rotor end faces S, T (see FIG. 3) are of homogeneous design, so that a good seal with respect to adjacent components of the vane pump, i.e. the housing 8 and a side window 7 (see FIG. 1) is ensured.
- the use of the ring-shaped spring component with several spring elements thus ensures that the vanes 4 are constantly in contact with the stroke curve and thus there are no losses in efficiency, even when starting an engine at low speeds. Furthermore, a lifting of the blades at high speeds and thus the volume flow pulsations are minimized.
- the spring elements 5 support the hydraulic loading of the wings 4 on the rear.
- the spring elements 5 are an integral part of the rotor 2, the assembly costs in particular can also be significantly reduced, since no complex positioning of spring elements in the recesses 10 of the rotor 2 is necessary.
- a volume flow required for a high pressure pump of a storage injection system for motor vehicles during the starting process to be provided.
- plastic is used as the material for components of the vane pump
- a surprisingly high cost saving in manufacture can be achieved compared to the known vane pumps with metallic components.
- the combination according to the invention of integral spring elements in a rotor of the vane pump thus enables great competitive advantages.
- the present invention thus relates to a vane cell pump for conveying fluids with a rotor 2, a cam ring 3 and a plurality of vanes 4 which are prestressed by means of spring elements 5, the spring elements 5 being an integral part of the rotor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10142712 | 2001-08-31 | ||
DE10142712A DE10142712B4 (de) | 2001-08-31 | 2001-08-31 | Flügelzellenpumpe |
PCT/DE2002/003154 WO2003025399A1 (de) | 2001-08-31 | 2002-08-28 | Flügelzellenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1421283A1 true EP1421283A1 (de) | 2004-05-26 |
EP1421283B1 EP1421283B1 (de) | 2005-07-13 |
Family
ID=7697271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02776658A Expired - Fee Related EP1421283B1 (de) | 2001-08-31 | 2002-08-28 | Flügelzellenpumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US20040166009A1 (de) |
EP (1) | EP1421283B1 (de) |
DE (2) | DE10142712B4 (de) |
WO (1) | WO2003025399A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10202721A1 (de) * | 2002-01-24 | 2003-08-14 | Siemens Ag | Flügelzellenpumpe |
DE102005007602A1 (de) * | 2005-02-18 | 2006-08-24 | Siemens Ag | Flügelzellenpumpe |
DE102006036756A1 (de) * | 2006-08-05 | 2008-02-07 | Zf Friedrichshafen Ag | Verfahren zur Verkürzung des Hochlaufes einer Flügelzellenpumpe und Flügelzellenpumpe, betreibbar nach dem Verfahren |
DE102006047510A1 (de) * | 2006-10-07 | 2008-04-17 | Zf Lenksysteme Gmbh | Flügelzellenpumpe |
DE102008006289B4 (de) | 2008-01-28 | 2018-10-04 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Pumpenrad |
DE102010046591B4 (de) | 2010-09-25 | 2015-03-12 | Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt | Flügelzellenpumpe |
US20140286797A1 (en) * | 2011-11-22 | 2014-09-25 | Matthias Tamm | Liquid-Ring Vacuum Pump and Impeller for a Liquid-Ring Vacuum Pump |
DE102012213847A1 (de) | 2012-08-06 | 2014-02-20 | Zf Friedrichshafen Ag | Flügelzellenpumpe |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2045014A (en) * | 1934-07-07 | 1936-06-23 | Gen Household Utilities Compan | Compressor |
US3335944A (en) * | 1964-09-14 | 1967-08-15 | Conde Milking Machine Company | Rotary pump |
DE1902187C3 (de) * | 1969-01-17 | 1978-10-12 | Alfred Teves Gmbh, 6000 Frankfurt | Drehkolbenmaschine |
JPS56151296A (en) * | 1980-04-24 | 1981-11-24 | Nissan Motor Co Ltd | Vane pump |
DE3309017C2 (de) * | 1983-03-14 | 1986-02-20 | Maschinen GmbH Otto Hölz, 7988 Wangen | Rotationsverdichter |
JPS6134374A (ja) * | 1984-07-26 | 1986-02-18 | Matsushita Electric Ind Co Ltd | ベ−ン回転式圧縮機 |
JPS62684A (ja) * | 1985-06-26 | 1987-01-06 | Matsushita Electric Ind Co Ltd | ベ−ン式圧縮機 |
CH672819A5 (de) * | 1988-04-26 | 1989-12-29 | Waelchli Hans | |
DE3909831A1 (de) * | 1989-03-25 | 1990-09-27 | Becker Kg Gebr | Trockenlaufende drehschiebervakuumpumpe sowie verfahren zu deren herstellung |
US6053717A (en) * | 1996-11-26 | 2000-04-25 | Randy J. Dixon | Rotary pump with wiper insert |
-
2001
- 2001-08-31 DE DE10142712A patent/DE10142712B4/de not_active Expired - Fee Related
-
2002
- 2002-08-28 EP EP02776658A patent/EP1421283B1/de not_active Expired - Fee Related
- 2002-08-28 DE DE50203631T patent/DE50203631D1/de not_active Expired - Fee Related
- 2002-08-28 WO PCT/DE2002/003154 patent/WO2003025399A1/de not_active Application Discontinuation
-
2004
- 2004-02-27 US US10/789,469 patent/US20040166009A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03025399A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20040166009A1 (en) | 2004-08-26 |
DE10142712B4 (de) | 2005-09-29 |
EP1421283B1 (de) | 2005-07-13 |
DE10142712A1 (de) | 2003-03-27 |
DE50203631D1 (de) | 2005-08-18 |
WO2003025399A1 (de) | 2003-03-27 |
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