WO2004109110A1 - Zahnradpumpe - Google Patents
Zahnradpumpe Download PDFInfo
- Publication number
- WO2004109110A1 WO2004109110A1 PCT/DE2004/000986 DE2004000986W WO2004109110A1 WO 2004109110 A1 WO2004109110 A1 WO 2004109110A1 DE 2004000986 W DE2004000986 W DE 2004000986W WO 2004109110 A1 WO2004109110 A1 WO 2004109110A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear
- pinion
- pump
- gear pump
- tooth
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
- F04C2230/602—Gap; Clearance
-
- 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
- F05C2225/12—Polyetheretherketones, e.g. PEEK
Definitions
- the invention relates to a gear pump, for example for oil or fuel, in particular a diesel prefeed pump, with a first and a second gear, wherein the first gear can be designed as a pinion and the second gear as a ring gear and the pinion is mounted eccentrically to the ring gear ,
- Gear pumps of this type are known.
- the special gears used there are gears that are very sensitive to axis misalignment. If the eccentric distance between the axes of the ring gear and pinion deviates slightly from its target value (production-related tolerances), the sealing of the tooth flanks during displacement is no longer guaranteed. Leakage occurs and pressure and delivery volume fall below the required values.
- a gear pump for example for oil or fuel, in particular a diesel feed pump, with a first and a second gear, the first gear being designed as a pinion and the second gear as a ring gear and the pinion being eccentrically mounted to the ring gear is, wherein the teeth of the first gear or the second gear are formed with a groove in the center of the tooth, starting from the tip diameter. This groove enables the gear wheel to be deformed in such a way that the flanks of a tooth can be compressed with respect to one another.
- a gear pump is preferred in which the first gear or the second gear with the teeth with a groove in the center of the tooth is made of an elastic plastic, preferably a slip-modified PEEK. This has the advantage that the first gear turns out to be small and light.
- the shape of the first gearwheel with the teeth with the groove in the center of the tooth also represents a construction that is particularly suitable for plastics.
- a gear pump according to the invention is characterized in that the first gear or the second gear is made with oversize. This has the advantage that the gear has a tight fit compared to the ring gear or pinion during installation.
- a gear pump is also preferred, in which the second gear or the first gear, that is to say the counter gear to the plastic gear, is preferably made of sintered steel. That has z.
- the ring gear has the advantage that both the inner and the outer shape of the ring gear can be designed very freely.
- a gear pump according to the invention is characterized in that the plastic pinion on the eccentric directly, i.e. is stored without using a sliding bush.
- the elastic high-temperature plastic PEEK has such good tribological properties that the use of a sliding bush is not necessary.
- a gear pump is preferred in which the toothing represents a cycloid toothing.
- a gear pump is also preferred, in which the first and the second gear are designed as the gears of an external gear pump.
- the figure shows a top view of a pinion 1, which is mounted eccentrically within a ring gear 3.
- the pinion 1 is arranged on an eccentric shaft 5, which is offset by the eccentricity 7 relative to the center of the ring gear 3.
- the ring gear 3 can be made of sintered steel and thus assume any outer contour 9, which, for. B. can correspond to the outer contour of the gear pump housing. Openings 11 within the ring gear component 3 are used to carry out fasteners such. B. screws with which a front and rear cover of the pump chamber can be mounted, and for carrying out fluid lines.
- the pinion 1 has a plurality of teeth 13 which are formed with a groove 15 in the center of the tooth, the groove base 17 starting approximately from the tip circle diameter.
- a pinion tooth 13 If a pinion tooth 13 is immersed, for example, in a ring gear tooth space 19, its flanks 21 can be compressed in the hundredths of a millimeter range. The actual compression depends on the axis offset. The possibility of the pinion tooth 13 to be able to adjust to the axis offset by this compression allows minimal sealing gaps between the tooth flanks even with extreme axis offset, such as, for. B. at +/- 0.1 mm.
- the design of the pinion 1 not only solves the task, but also represents a plastic-compatible construction with its roundings. The pinion 1 is small and light and can therefore also be produced economically using the relatively expensive material PEEK. The good tribological properties of the slip-modified PEEK also allow the pinion 1 to be supported on the eccentric 5 without the use of a sliding bush.
- the invention leads to a toothing that is insensitive to axial misalignment, for example for a diesel pre-feed pump, which consists of a few individual parts and ensures good volumetric efficiency even at high temperatures and low speeds.
- the invention is not limited to internal gear pumps. It is also conceivable that the first and second gear belong to an external gear pump.
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
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112004000064T DE112004000064D2 (de) | 2003-05-23 | 2004-05-12 | Zahnradpumpe |
EP04732274A EP1629203A1 (de) | 2003-05-23 | 2004-05-12 | Zahnradpumpe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10323311 | 2003-05-23 | ||
DE10323311.3 | 2003-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004109110A1 true WO2004109110A1 (de) | 2004-12-16 |
Family
ID=33494746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/000986 WO2004109110A1 (de) | 2003-05-23 | 2004-05-12 | Zahnradpumpe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1629203A1 (de) |
DE (1) | DE112004000064D2 (de) |
WO (1) | WO2004109110A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013171630A1 (en) * | 2012-05-15 | 2013-11-21 | Sabic Innovative Plastics Ip B.V. | Polyetherimide pump |
EP2913530A1 (de) * | 2014-02-27 | 2015-09-02 | Schwäbische Hüttenwerke Automotive GmbH | Rotationspumpe mit Kunststoffverbundstruktur |
DE202021103986U1 (de) | 2020-07-28 | 2021-09-01 | Casappa S.P.A. | Volumetrische Zahnradmaschine |
DE102022200830A1 (de) | 2022-01-26 | 2023-07-27 | Zf Friedrichshafen Ag | Zahnradpumpe mit Geräuschoptimierung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62111181A (ja) * | 1985-11-06 | 1987-05-22 | Inoue Japax Res Inc | 回転ポンプ |
DE3737961A1 (de) * | 1987-11-07 | 1989-05-18 | Barmag Barmer Maschf | Innenzahnradpumpe |
JPH02304243A (ja) * | 1989-05-19 | 1990-12-18 | Toshiba Corp | 歯車 |
JPH0544651A (ja) * | 1991-08-12 | 1993-02-23 | Toyooki Kogyo Co Ltd | 内接歯車ポンプ |
DE4440782A1 (de) * | 1993-11-18 | 1995-07-20 | Barmag Luk Automobiltech | Innenzahnradpumpe mit Verdrängervorsprüngen |
US6264449B1 (en) * | 2000-02-16 | 2001-07-24 | Alexander Maute | Plastic toothed wheel for a toothed wheel pump |
-
2004
- 2004-05-12 DE DE112004000064T patent/DE112004000064D2/de not_active Ceased
- 2004-05-12 EP EP04732274A patent/EP1629203A1/de not_active Withdrawn
- 2004-05-12 WO PCT/DE2004/000986 patent/WO2004109110A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62111181A (ja) * | 1985-11-06 | 1987-05-22 | Inoue Japax Res Inc | 回転ポンプ |
DE3737961A1 (de) * | 1987-11-07 | 1989-05-18 | Barmag Barmer Maschf | Innenzahnradpumpe |
JPH02304243A (ja) * | 1989-05-19 | 1990-12-18 | Toshiba Corp | 歯車 |
JPH0544651A (ja) * | 1991-08-12 | 1993-02-23 | Toyooki Kogyo Co Ltd | 内接歯車ポンプ |
DE4440782A1 (de) * | 1993-11-18 | 1995-07-20 | Barmag Luk Automobiltech | Innenzahnradpumpe mit Verdrängervorsprüngen |
US6264449B1 (en) * | 2000-02-16 | 2001-07-24 | Alexander Maute | Plastic toothed wheel for a toothed wheel pump |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 330 (M - 636) 28 October 1987 (1987-10-28) * |
PATENT ABSTRACTS OF JAPAN vol. 015, no. 085 (M - 1087) 27 February 1991 (1991-02-27) * |
PATENT ABSTRACTS OF JAPAN vol. 017, no. 346 (M - 1437) 30 June 1993 (1993-06-30) * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013171630A1 (en) * | 2012-05-15 | 2013-11-21 | Sabic Innovative Plastics Ip B.V. | Polyetherimide pump |
CN104271952A (zh) * | 2012-05-15 | 2015-01-07 | 沙特基础创新塑料Ip私人有限责任公司 | 聚醚酰亚胺泵 |
US9429149B2 (en) | 2012-05-15 | 2016-08-30 | Sabic Global Technologies B.V. | Polyetherimide pump |
EP2913530A1 (de) * | 2014-02-27 | 2015-09-02 | Schwäbische Hüttenwerke Automotive GmbH | Rotationspumpe mit Kunststoffverbundstruktur |
US9920756B2 (en) | 2014-02-27 | 2018-03-20 | Schwäbische Hüttenwerke Automotive GmbH | Rotary pump with a plastic composite structure |
DE202021103986U1 (de) | 2020-07-28 | 2021-09-01 | Casappa S.P.A. | Volumetrische Zahnradmaschine |
IT202000018235A1 (it) * | 2020-07-28 | 2022-01-28 | Casappa Spa | Macchina volumetrica ad ingranaggi |
DE102022200830A1 (de) | 2022-01-26 | 2023-07-27 | Zf Friedrichshafen Ag | Zahnradpumpe mit Geräuschoptimierung |
Also Published As
Publication number | Publication date |
---|---|
EP1629203A1 (de) | 2006-03-01 |
DE112004000064D2 (de) | 2005-07-28 |
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