EP1182349A2 - Pompe à engrenages internes avec des roues à denture hélicoidale - Google Patents

Pompe à engrenages internes avec des roues à denture hélicoidale Download PDF

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Publication number
EP1182349A2
EP1182349A2 EP01118850A EP01118850A EP1182349A2 EP 1182349 A2 EP1182349 A2 EP 1182349A2 EP 01118850 A EP01118850 A EP 01118850A EP 01118850 A EP01118850 A EP 01118850A EP 1182349 A2 EP1182349 A2 EP 1182349A2
Authority
EP
European Patent Office
Prior art keywords
pump
rotor
toothing
toothed
wheel set
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Withdrawn
Application number
EP01118850A
Other languages
German (de)
English (en)
Other versions
EP1182349A3 (fr
Inventor
Lothar Dr. Hauck
Christof Dr. Lamparski
Anton Eiberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schwaebische Huettenwerke Automotive GmbH
Original Assignee
Schwaebische Huettenwerke Automotive GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schwaebische Huettenwerke Automotive GmbH filed Critical Schwaebische Huettenwerke Automotive GmbH
Publication of EP1182349A2 publication Critical patent/EP1182349A2/fr
Publication of EP1182349A3 publication Critical patent/EP1182349A3/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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

Definitions

  • the present invention relates to a toothed pump, especially an internal ring gear pump for Pumping fluids with a housing with fluid inlet and fluid outlet openings, and with a first toothed rotor which rotatably engages with a second toothed rotor.
  • the invention further relates to a wheel set for such a toothed pump and various uses of the wheelset.
  • Tooth pumps of the aforementioned type are mostly used as gear ring oil pumps for internal combustion engines and used as oil supply pumps for gears, and they serve for supply the engine with lubricating oil, the cooling of cylinders and the control of various Adjustment mechanisms, with an oil pump in gearboxes, various switching elements with pressure oil pressurized, supplies oil for cooling the torque converter and for pressure lubrication the gears cares.
  • the low noise level of the pump is becoming increasingly important. Decisive for this is the lowest possible pressure pulsation of the oil volume flow, the engagement conditions the teeth and the design of the backlash between the wheels.
  • the volumetric too Efficiency plays a major role, and it depends particularly on gerotor pumps from the backlash.
  • the engagement conditions and the rolling process influence the noise generated by the pump is also decisive.
  • the above-mentioned object is achieved in that in a toothed pump according to the invention or in a gear set according to the invention for such a toothed pump, the toothing formed in the engagement between the first and the second rotor as helical teeth is, the rotors made of sintered or powder metallurgy materials are trained.
  • Such helical gearing has the advantage of smooth running due to the gradual Intervention on the tooth flanks, and also the filling and emptying process takes place Delivery cells in a gentler manner, which helps to reduce pressure pulsation.
  • the slant the teeth also allows the reduction of the squeeze oil losses, which is positive in the hydraulic-mechanical efficiency.
  • the toothed pump according to the invention is an internally toothed ring gear pump, wherein the first rotor is an inner rotor or a pinion and the second rotor External rotor or a ring gear is.
  • the ring gear is in a housing with a radial play housed that is large enough to the z.
  • B. a crank mechanism radial radial movements of the pinion.
  • the actual storage of the ring gear takes place on the pinion toothing, which is opposite to the ring gears has minimal play required.
  • the helical teeth have a helix angle of about 1 ° to 80 °, in particular 1 to 45 ° and preferably 1 ° to 15 °.
  • the helix angle only becomes as large as a function of the rotor width chosen to short-circuit the fluid flow between fluid inlet and fluid outlet openings the housing can be avoided, with thinner wheelsets a higher helix angle can have as thicker wheelsets.
  • the helix angle is preferably chosen so that the filling and emptying processes of the delivery cells can be optimized to prevent pressure pulsations and squeezing fluid losses avoid.
  • the toothing is one for Pumping of oil suitable, left or right beveled toothing, especially one Cycloid.
  • gearing as long as it is Pumping a selected fluid is suitable, can have any tooth shape; in principle is z.
  • the profile of closed curves or closed curves in some areas can exist.
  • the toothing is in engagement between the first and the second rotor has a helical toothing and the rotors can all mentioned above Features.
  • the present invention also has various uses of such a wheel set or a gerotor pump equipped with it, namely on the one hand the use for an oil tooth pump for internal combustion engines, secondly the use for a toothed pump for the oil supply of gearboxes and thirdly use as a toothed pump for hydraulic control of adjustment mechanisms or Switching elements.
  • the use of the toothed pump according to the invention or of the invention is, of course Wheelset possible in all applications where fluids are pumped should be, especially where noise is minimized and if possible uniform volume flow is to be generated.
  • FIGS and 4 show an end view and a perspective view of a pinion 10 for a tooth pump according to the invention.
  • This pinion 10 rolls in that in FIGS and 4 shown ring gear 20 in meshing gear and pumps fluid through when rolling emerging delivery cells between the respective tooth flanks from an inlet side of a housing, not shown, to an outlet side.
  • the pinion 10 has one tooth less than the ring gear 20, so that when the pinion 10 rolls in the ring gear 20, the feed cells arise and be closed.
  • the pinion is with a not shown drive shaft engaged, and the ring gear 20 is in the not shown Housing housed with a radial clearance that is large enough to accommodate that of the shaft radial movements of the pinion 10 shown.
  • the toothing shape is the one preferred embodiment represents a cycloid toothing, in which the tooth heads and the tooth flanks mathematically represent exactly defined cycloids, which result from complete rolling of rolling circles are formed on fixed circles running concentrically to the respective rotor axes.
  • the diameter of the rolling circles of the tooth tip geometry and the tooth flank 11 can or 21 different.
  • the sum of the two different rolling circle radii is however equal to the center distance (eccentricity) between pinion 10 and ring gear 20. Zur Generating the tooth geometry does not necessarily mean the roll point on the radius of the rolling circle; Depending on your needs, a shortened or elongated form of the cycloid can be used be an advantage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Control Of Transmission Device (AREA)
EP01118850A 2000-08-22 2001-08-14 Pompe à engrenages internes avec des roues à denture hélicoidale Withdrawn EP1182349A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10040965 2000-08-22
DE2000140965 DE10040965A1 (de) 2000-08-22 2000-08-22 Zahnpumpe mit Schrägverzahnung

Publications (2)

Publication Number Publication Date
EP1182349A2 true EP1182349A2 (fr) 2002-02-27
EP1182349A3 EP1182349A3 (fr) 2003-01-08

Family

ID=7653243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01118850A Withdrawn EP1182349A3 (fr) 2000-08-22 2001-08-14 Pompe à engrenages internes avec des roues à denture hélicoidale

Country Status (4)

Country Link
EP (1) EP1182349A3 (fr)
JP (1) JP2002138968A (fr)
DE (1) DE10040965A1 (fr)
NO (1) NO20014066L (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10148476B4 (de) * 2001-10-01 2004-09-09 Witte Pumpen Und Anlagentechnik Gmbh Zahnradpumpe
JP2006233771A (ja) * 2005-02-22 2006-09-07 Mitsubishi Materials Pmg Corp ポンプロータ
JP6303521B2 (ja) 2014-01-17 2018-04-04 株式会社ダイヤメット 回転体、回転体素材、及び回転体の製造方法
DE102022201642A1 (de) 2022-02-17 2023-08-17 Vitesco Technologies GmbH Gerotor-Pumpenstufe, Förderpumpe, Fahrzeug sowie Verfahren zur Herstellung der Gerotor-Pumpenstufe, der Förderpumpe und des Fahrzeugs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2830542A (en) * 1953-06-22 1958-04-15 Gen Motors Corp Fluid pump
JPS59501514A (ja) * 1982-09-07 1984-08-23 フオ−ド　モ−タ−　カンパニ− はすば歯車ポンプ
GB9010686D0 (en) * 1990-05-12 1990-07-04 Concentric Pumps Ltd Gerotor pumps
DE4102162A1 (de) * 1991-01-25 1992-07-30 Bosch Gmbh Robert Vorrichtung zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges
US6089843A (en) * 1997-10-03 2000-07-18 Sumitomo Electric Industries, Ltd. Sliding member and oil pump
DE19826367C2 (de) * 1998-06-12 2000-05-18 Geraete & Pumpenbau Gmbh Innenzahnradpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
EP1182349A3 (fr) 2003-01-08
NO20014066L (no) 2002-02-25
DE10040965A1 (de) 2002-03-28
NO20014066D0 (no) 2001-08-21
JP2002138968A (ja) 2002-05-17

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