WO2011128218A2 - Pompe à engrenage - Google Patents

Pompe à engrenage Download PDF

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Publication number
WO2011128218A2
WO2011128218A2 PCT/EP2011/055158 EP2011055158W WO2011128218A2 WO 2011128218 A2 WO2011128218 A2 WO 2011128218A2 EP 2011055158 W EP2011055158 W EP 2011055158W WO 2011128218 A2 WO2011128218 A2 WO 2011128218A2
Authority
WO
WIPO (PCT)
Prior art keywords
gear
gear pump
toothed ring
toothing
toothed
Prior art date
Application number
PCT/EP2011/055158
Other languages
German (de)
English (en)
Other versions
WO2011128218A3 (fr
Inventor
Stanislaw Bodzak
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2011128218A2 publication Critical patent/WO2011128218A2/fr
Publication of WO2011128218A3 publication Critical patent/WO2011128218A3/fr

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
    • F04C2/10—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
    • 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
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor
    • F04C2250/201—Geometry of the rotor conical shape

Definitions

  • the present invention relates to a gear pump according to the preamble of claim 1.
  • Internal gear pumps which are particularly suitable for providing high pressures, are used for conveying fluids, such as, for example, for conveying fuel to an internal combustion engine of a motor vehicle.
  • the known from the prior art internal gear pumps usually have a cylindrically shaped internal gear, the so-called gerotor, with a parallel profile.
  • the flank profiles used are predominantly formed with a trochoid toothing, which are produced by means of a sintering technique.
  • z. B. for flow rates from 15 cm 3 / U and for good starting characteristics correspondingly necessary low head games below 70 ⁇ the flank profiles must also be subjected to a very complex grinding process.
  • the internal grinding that is the grinding of the inner circumference of the external gearwheel, is particularly complex here. This results in high production costs.
  • an internal gear pump in a one-sided construction with respect to the inlet and outlet which comprises a recessed area, which is provided on a side surface of the output rotor and / or the drive rotor.
  • the recessed area communicates with the respective corresponding space and is defined such that the inlet opening and the outlet opening are prevented from communicating with the respective corresponding space at the position where the corresponding space reaches the maximum volume.
  • the recess portion opens in a direction between a radial direction of the drive rotor or the output rotor and a circumferential direction thereof on each tooth of the respective output rotor or drive rotor. This configuration avoids cavitation effects.
  • a gear pump for conveying a fluid with a rotatably mounted externally toothed toothed wheel and an internally toothed ring, which together form a toothing and are in meshing engagement for generating a conveying effect is provided, wherein a toothing profile of the externally toothed toothed wheel and the internally toothed toothed ring is conical is.
  • the inventive configuration of the tooth profile undesirable cavitation effects in a simple and cost-effective manner, namely only by the conical development of the tooth profile can be avoided.
  • a toothing profile designed in this way requires only a sintering process, but no additional grinding.
  • the gear has a plurality of teeth, wherein each tooth of the gear is tapered conically from an opposite side of the gear to an inlet side of the gear.
  • an inlet and a drain of the gear pump are arranged on the respective inlet side of the toothed ring and the toothed wheel.
  • the head clearance is determined by the axial position of the internal gear to the external gear.
  • the head clearance of the gear pump is changeable by the axial position of the internal gear to the position of the external gear in a planar machining, in particular reduced in size.
  • the head game is less than 70 ⁇ .
  • FIG. 2 is a perspective view of a toothing of an internal gear pump according to an embodiment
  • Fig. 3 is a perspective view of a toothing of an internal gear pump according to another embodiment.
  • Fig. 1 shows a section through a designed as an internal gear pump gear pump 1 according to the prior art with parallel teeth.
  • the gear pump 1 comprises a gear pair, which consists of an internally toothed ring gear 2 and an externally toothed gear 3.
  • the gear 3 is arranged eccentrically to the toothed ring 2 rotatably on a bearing journal 4. If the gear 3 is set in a rotational movement, then the external toothing of the toothed wheel 3 meshes in the internal toothing of the toothed ring 2 and generates a delivery volume flow of the fluid in which the teeth run.
  • the gear pair of the toothed ring 2 and the gear 3 is arranged in a housing 5, wherein the bearing pin 4 is integrally formed or integrally with the housing 5.
  • the gear pump 1 is electrically driven.
  • any drive forms, in particular a mechanical drive of the gear pump 1 can be implemented.
  • the toothed ring 2 is also rotatably connected to a magnetic ring 6, wherein the magnetic ring 6 extends radially around the toothed ring 2.
  • the magnetic ring 6 runs in an inner side of a stator 7, which has an electric winding, not shown. If the electric winding is electrically commutated by a controller, a circulating magnetic field is generated in the stator 7.
  • an inlet 8 and a drain 9 for the fluid to be pumped which is fuel here, indicated by the dashed circular lines.
  • the inlet 8 and the outlet 9 are here offset by 180 ° to each other and open into a Zulaufniere or a drain kidney.
  • the toothed ring 2 has an inlet side 12, from which the fluid to be delivered or the fuel enters the gear pair, which is characterized in the figure by the flow direction S z , and one of the inlet side 12 opposite side 13.
  • the gear 3 has an inlet side 14 and one of the inlet side 14 opposite side 15. It can be seen that each tooth 10 of the toothed ring 2 tapers conically from one side of the toothed ring 2 to an opposite side. In the opposite direction, each tooth 1 1 of the externally toothed gear 3 tapers from the opposite side 15 to the side 14 of the toothed wheel 3.
  • the diameter d of the toothing is small on the respective inlet side 14, 12 of the toothed wheel 3 or the toothed ring 2.
  • Embodiment the inlet and the outlet are arranged on the same side, as it may require certain installation situations.
  • 3 shows a perspective view of a toothing of an internal gear pump according to a further embodiment.
  • This embodiment differs from the embodiment illustrated in FIG. 2 only in that the inlet, again indicated only by the inlet kidney 16, is located on the side of the toothing with the smaller diameter d; however, the drain, indicated by the drainage kidney 17, is located on the opposite side of the larger diameter toothing D.
  • this corresponds to a so-called symmetrical design.
  • This embodiment is particularly suitable for internal gear pumps with high speeds in order to improve their wear resistance and also their efficiency.

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

L'invention concerne une pompe à engrenage pour transporter un fluide, comportant une roue dentée à denture extérieure logée rotative, et une couronne dentée à denture intérieure, formant ensemble un engrenage et s'engrenant pour produire un effet de transport. Un profil de denture respectif de la roue dentée à denture extérieure et de la couronne dentée à denture intérieure étant conçu conique.
PCT/EP2011/055158 2010-04-16 2011-04-04 Pompe à engrenage WO2011128218A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010027835.1 2010-04-16
DE201010027835 DE102010027835A1 (de) 2010-04-16 2010-04-16 Zahnradpumpe

Publications (2)

Publication Number Publication Date
WO2011128218A2 true WO2011128218A2 (fr) 2011-10-20
WO2011128218A3 WO2011128218A3 (fr) 2013-03-07

Family

ID=44625635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/055158 WO2011128218A2 (fr) 2010-04-16 2011-04-04 Pompe à engrenage

Country Status (2)

Country Link
DE (1) DE102010027835A1 (fr)
WO (1) WO2011128218A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013199849A (ja) * 2012-03-23 2013-10-03 Hitachi Automotive Systems Ltd 内接歯車ポンプ

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6086239B2 (ja) * 2013-08-09 2017-03-01 アイシン精機株式会社 流体ポンプ用インナロータ
DE102022130861A1 (de) 2022-11-22 2024-05-23 Klaus Stühmeier Fördereinrichtung für flüssiges oder gasförmiges Medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330586A1 (de) 1993-03-05 1994-09-08 Eisenmann Siegfried A Innenzahnradpumpe für großen Drehzahlbereich
DE102006049361A1 (de) 2005-10-20 2007-06-06 Aisin Seiki K.K., Kariya Innenzahnradpumpe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9405502U1 (de) * 1994-03-26 1994-07-28 WITEG Wissenschaftlich- Technische Gesellschaft mbH Werkstoffe und Baugruppen, 01640 Coswig Präzisionsflüssigkeitspumpe aus Formteilen mit großer Toleranzbreite
JP2000027769A (ja) * 1998-07-08 2000-01-25 Unisia Jecs Corp 内接型歯車ポンプまたはモータおよびその製造方法
JP4272112B2 (ja) * 2004-05-26 2009-06-03 株式会社日立製作所 モータ一体型内接歯車式ポンプ及び電子機器
DE102006056845A1 (de) * 2006-12-01 2008-06-05 Robert Bosch Gmbh Förderaggregat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330586A1 (de) 1993-03-05 1994-09-08 Eisenmann Siegfried A Innenzahnradpumpe für großen Drehzahlbereich
DE102006049361A1 (de) 2005-10-20 2007-06-06 Aisin Seiki K.K., Kariya Innenzahnradpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013199849A (ja) * 2012-03-23 2013-10-03 Hitachi Automotive Systems Ltd 内接歯車ポンプ

Also Published As

Publication number Publication date
DE102010027835A1 (de) 2011-10-20
WO2011128218A3 (fr) 2013-03-07

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