EP1039135A2 - Sichellose Innenzahnradpumpe mit in die Zahnköpfe eingesetzten Dichtelementen - Google Patents
Sichellose Innenzahnradpumpe mit in die Zahnköpfe eingesetzten Dichtelementen Download PDFInfo
- Publication number
- EP1039135A2 EP1039135A2 EP99124717A EP99124717A EP1039135A2 EP 1039135 A2 EP1039135 A2 EP 1039135A2 EP 99124717 A EP99124717 A EP 99124717A EP 99124717 A EP99124717 A EP 99124717A EP 1039135 A2 EP1039135 A2 EP 1039135A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring gear
- pinion
- tooth
- gear pump
- internal gear
- 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- Withdrawn
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Images
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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0007—Radial sealings for working fluid
- F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
-
- 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
- F04C2/102—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 the two members rotating simultaneously around their respective axes
Definitions
- the present invention relates to a sickle-free internal gear pump for Generation of high pressure according to the preamble of patent claim 1.
- a pump of this generic type is known from DE 41 04 397 A1 known.
- Internal gear pumps generally have an internal gear with which an externally toothed pinion meshes with a smaller number of teeth, i.e. is drivingly engaged.
- Each tooth head of the ring gear has a profile groove on.
- a sealing element is inserted into this groove. This arrives during circulation of the pinion with its tooth heads in sliding contact. Doing so shortly a seal is made that seals the suction chamber against the Shuts off the pressure chamber. To achieve a certain contact pressure are the springs on the radially outer ends of the sealing elements.
- the sealing elements are usually made of plastic. You went there previously believed that some elasticity with regard to the seal necessary is.
- the invention has for its object to such an internal gear pump design that neither a drop in efficiency occurs nor Pressure pulsations appear.
- the crowns of the tooth tips of the pinion lie on different radii. This is due to manufacturing tolerances. This means, for example, that the apex of one tooth tip is on a larger radius than the apex of the tooth tip of an adjacent tooth lies.
- For the Sealing elements means that even their sealing surfaces when the Pinions from tooth to tooth lie on different radii. In a way In this way, the sealing elements result in a dancing movement radial direction. The movement only takes place in the micro range, however, it does exist. It leads to a relative movement of the individual Sealing element on the reveal of the profile groove, which in the tooth head of the Ring gear is incorporated.
- the individual Sealing element is a barrier between the suction chamber and the pressure chamber.
- a pressure differential acts on the sealing element with Pressure direction from the suction chamber to the pressure chamber.
- This also means that the side surface of the sealing element facing the suction chamber against the relevant reveal of the profile groove is pressed.
- the said Micromotion in the radial direction leads in view of the above Differential pressure for a grinding process.
- This has a wear of the according to the areas involved.
- the sealing element becomes extremely undesirable Machined in one face. The wear can be so severe be that it will tilt the sealing elements and thus too Interferences of the meshing leads. Therefore, he could not be the cause for the above-mentioned harmful effects (loss of efficiency, Pressure pulsations) can be determined.
- Fig. 1 shows in a cross section a sickle-free, head-sealing backlash each with a flank sealing internal gear pump, and in the area of a housing part 1, which - viewed in the axial direction - Connect further housing parts.
- a fixed on a drive shaft 4 externally toothed pinion 5 meshes with an internally toothed ring gear 6 and thus forms a toothing 12.
- the pinion 5 and the ring gear 6 are not coaxially but eccentrically; also has the pinion 5 one tooth less than the ring gear 6, so that the outside a toothed head 13 on the pinion 5 with the inside of a toothed head 14 on Ring gear 6 comes into contact.
- a suction connection 7 in can also be seen the zone in which the teeth on the pinion 5 or ring gear 6 disengaged.
- a pressure connection 10 is located, also starting from one pressure pocket extending over a circumferential area on the ring gear 6 11, on the opposite side of the pump.
- the inflow from Pressure medium to the interior of the pump, i.e. to the tooth gaps in the pinion 5 and in the ring gear 6, which cause the promotion of the pressure medium takes place axially and via radial openings 17 in the ring gear 6. These openings 17 start from the outer surface 20 of the ring gear 6 and open into it Tooth base.
- FIG. 2 shows how the Sealing elements 30 in dovetail-like profile grooves 34 in a form-fitting manner are fitted and how the side / contact surfaces between Sealing element 30 and profile groove 34 can be designed to cover the width the toothing 12 a pressure distribution as uniform as possible and thus to ensure the most stable possible operating behavior of the pump.
- Fig. 2 shows the pinion 5 and the ring gear 6 in the area in which the / in Ring gear 6 inserted sealing element 30 sealingly abuts the pinion 5.
- the sealing elements 30 are made of steel due to pressure pulsations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
Description
- Fig. 1
- einen Querschnitt durch eine sichellose Innenzahnradpumpe im Bereich der beiden Zahnräder;
- Fig. 2
- eine vergrößerte Ausschnittdarstellung des Bereiches der beiden Zahnräder, in dem die Dichtelemente ihre Dichtwirkung entfalten.
Claims (2)
- Sichellose Zahnradpumpe;1.1 mit einem innenverzahnten Hohlrad (6);1.2 mit einem mit dem Hohlrad (6) kämmenden Ritzel (5);1.3 Hohlrad (6) und Ritzel (5) sind in einem Gehäuse (1) drehbar gelagert;1.4 das Gehäuse (1) weist einen Sauganschluss (7) und einen Druckanschluss (10) auf;1.5 das Hohlrad (6) weist Durchbrüche (17) für das zu pumpende Medium auf;1.6 jeder Zahnkopf (14) des Hohlrades (6) weist eine Profilnut (34) auf, in der sich ein radial bewegliches Dichtelement (30) zum Erzielen einer gleitenden Abdichtung mit den Zahnköpfen des Ritzels (5) befindet; gekennzeichnet durch die folgenden Merkmale:1.7 die Dichtelemente (30) bestehen aus einem Metall.
- Sichellose Innenzahnradpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Dichtelemente (30) aus Stahl bestehen.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000008807A KR20000062610A (ko) | 1999-03-26 | 2000-02-23 | 기어 치부 선단부에 실 부재를 구비한 내륜형 기어 펌프 |
US09/523,802 US6273695B1 (en) | 1999-03-26 | 2000-03-13 | Sickleless internal gear wheel pump with sealing elements inserted into the tooth tips |
JP2000082648A JP2000291565A (ja) | 1999-03-26 | 2000-03-23 | 歯先部に挿入されたシール部材を備え鎌状部材を有さない内接歯車ポンプ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19913752 | 1999-03-26 | ||
DE19913752 | 1999-03-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1039135A2 true EP1039135A2 (de) | 2000-09-27 |
EP1039135A3 EP1039135A3 (de) | 2001-12-19 |
Family
ID=7902506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99124717A Withdrawn EP1039135A3 (de) | 1999-03-26 | 1999-12-11 | Sichellose Innenzahnradpumpe mit in die Zahnköpfe eingesetzten Dichtelementen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1039135A3 (de) |
KR (1) | KR20000062610A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101984257A (zh) * | 2010-10-30 | 2011-03-09 | 辽宁工程技术大学 | 平衡式内啮合齿轮泵 |
WO2023202752A1 (de) * | 2022-04-20 | 2023-10-26 | Hanon Systems Efp Deutschland Gmbh | Gerotorpumpe |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100427077B1 (ko) * | 2001-10-09 | 2004-04-17 | 현대자동차주식회사 | 오일펌프 구조 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2790394A (en) * | 1952-09-02 | 1957-04-30 | Gulf Research Development Co | Internal-external gear pump with self-sealing tooth tips |
FR1373473A (fr) * | 1963-10-30 | 1964-09-25 | Goetzewerke | Segment d'étanchéité radial pour machine à piston rotatif |
US4180188A (en) * | 1975-11-18 | 1979-12-25 | Kokkoman Shoyu Co., Ltd. | Sealing structure for rotary valves |
US4618317A (en) * | 1982-11-30 | 1986-10-21 | Nippon Piston Ring Co., Ltd. | Rotary type fluid compressor |
DE4104397A1 (de) * | 1990-03-09 | 1991-09-12 | Voith Gmbh J M | Innenzahnradpumpe |
DE4140293A1 (de) * | 1991-12-06 | 1993-06-09 | J.M. Voith Gmbh, 7920 Heidenheim, De | Sichellose innenzahnradpumpe mit in die zahnkoepfe eingesetzten dichtelementen |
-
1999
- 1999-12-11 EP EP99124717A patent/EP1039135A3/de not_active Withdrawn
-
2000
- 2000-02-23 KR KR1020000008807A patent/KR20000062610A/ko not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2790394A (en) * | 1952-09-02 | 1957-04-30 | Gulf Research Development Co | Internal-external gear pump with self-sealing tooth tips |
FR1373473A (fr) * | 1963-10-30 | 1964-09-25 | Goetzewerke | Segment d'étanchéité radial pour machine à piston rotatif |
US4180188A (en) * | 1975-11-18 | 1979-12-25 | Kokkoman Shoyu Co., Ltd. | Sealing structure for rotary valves |
US4618317A (en) * | 1982-11-30 | 1986-10-21 | Nippon Piston Ring Co., Ltd. | Rotary type fluid compressor |
DE4104397A1 (de) * | 1990-03-09 | 1991-09-12 | Voith Gmbh J M | Innenzahnradpumpe |
DE4140293A1 (de) * | 1991-12-06 | 1993-06-09 | J.M. Voith Gmbh, 7920 Heidenheim, De | Sichellose innenzahnradpumpe mit in die zahnkoepfe eingesetzten dichtelementen |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101984257A (zh) * | 2010-10-30 | 2011-03-09 | 辽宁工程技术大学 | 平衡式内啮合齿轮泵 |
CN101984257B (zh) * | 2010-10-30 | 2012-03-28 | 辽宁工程技术大学 | 平衡式内啮合齿轮泵 |
WO2023202752A1 (de) * | 2022-04-20 | 2023-10-26 | Hanon Systems Efp Deutschland Gmbh | Gerotorpumpe |
Also Published As
Publication number | Publication date |
---|---|
KR20000062610A (ko) | 2000-10-25 |
EP1039135A3 (de) | 2001-12-19 |
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