EP3230592B1 - Pompe gérotor - Google Patents

Pompe gérotor Download PDF

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Publication number
EP3230592B1
EP3230592B1 EP15831041.7A EP15831041A EP3230592B1 EP 3230592 B1 EP3230592 B1 EP 3230592B1 EP 15831041 A EP15831041 A EP 15831041A EP 3230592 B1 EP3230592 B1 EP 3230592B1
Authority
EP
European Patent Office
Prior art keywords
rotor
tooth
plane
gerotor pump
face wall
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.)
Active
Application number
EP15831041.7A
Other languages
German (de)
English (en)
Other versions
EP3230592A1 (fr
Inventor
Andreas Blechschmidt
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.)
Nidec GPM GmbH
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Nidec GPM GmbH
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Filing date
Publication date
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Publication of EP3230592A1 publication Critical patent/EP3230592A1/fr
Application granted granted Critical
Publication of EP3230592B1 publication Critical patent/EP3230592B1/fr
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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
    • 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
    • F01C21/02—Arrangements of bearings
    • 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
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • 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
    • F04C15/0088—Lubrication
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/56—Bearing bushings or details thereof
    • 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
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides

Definitions

  • the invention relates to a gerotor pump for rotors with tooth tip diameters of approx. 20 to approx. 40 mm, which work with delivery pressures in the range between 3 to 20 bar and for pumping hardly lubricating media, such as an oil pump in the motor vehicle sector for pumping engine oils with low viscosity.
  • end walls are arranged as a cover and / or housing, with the one containing the axes in at least one of the end walls / cover on both sides, in section as Center line appearing eccentricity plane, on the one hand an arcuate pressure groove and on the other hand an arcuate suction groove is arranged.
  • gerotor pump In the DE 10 2012 205 406 A1 A gerotor pump is described above, in which the pressure pulsation is to be reduced by means of curved lines of action deviating from the straight line and an edge area of the end wall of the gear wheel which is beveled along the entire tooth profile, which reduces the noise generated during operation of the above. Gerotor pump.
  • Rectangular recesses are arranged on both sides of the gear, on both sides of the apex on the tooth head, which cause a short circuit with the adjacent pressure chamber at the times at which the pressure chamber has a minimum or maximum volume, whereby a backflow of the fluid to the adjacent chamber, and thus a pressure equalization is made possible.
  • the operating behavior of the hydraulic machine should be designed to be wear-resistant.
  • the invention is therefore based on the object of developing a gerotor pump with a sleeve-guided rotor which eliminates the aforementioned disadvantages of the prior art and which, when using low-viscosity pumping media such as "low viscosity oil", in conjunction with use in smaller pump systems , whose rotors have tooth tip diameters of approx. 20 to approx. 40 mm and whose delivery pressures are in the range of 3 to 20 bar, and which at low speeds in the range of 500 to 1,000 rpm and high delivery pressures cause the disproportionate increase in the drive torque at the same time Significantly reduce the loss of efficiency, so that the gerotor pump according to the invention always ensures a high pump efficiency with high reliability and a long service life.
  • low-viscosity pumping media such as "low viscosity oil”
  • gerotor pump with an externally toothed as in the Figures 3 to 6 shown inner wheel, the rotor 1, and an internally toothed outer wheel, the ring gear 2, which is guided in a circular working chamber of a pump housing 3 in such a way that both gears are in meshing engagement and rotate about their own, but mutually offset axes
  • the rotor 1 is mounted on one side on a bearing sleeve 4, and on both sides of the end walls 5 of the intermeshing gears each side walls 6 are arranged, which can either be integrated in the pump housing 3 or arranged as a cover 7 on the pump housing 3, in at least one of these side walls 6, on both sides of the eccentricity plane containing the mutually offset axes of rotor 1 and toothed ring 2, a circular arc-shaped pressure kidney 8 and opposite a circular arc-shaped suction kidney 9 are arranged, characterized in that on the end wall 5 of the adjacent to the pressure kidney 8 and the suction kidney 9 Rotor 1 on each
  • the inclined lubrication surface 11 arranged according to the invention on each tooth 10 of the rotor 1 in the direction of rotation R of the rotor 1, on / in the pressure kidney 8 and the end wall 5 of the rotor 1 adjacent to the suction kidney 9 causes, even under unfavorable conditions, such as high working pressures, When pumping poorly lubricating media, with low sliding speeds of the sliding partners, and inexpensive sliding pairings, the build-up of a hydrodynamically load-bearing lubricating film between the end wall 5 of the rotor 1 and the side wall 6 of the gerotor pump adjacent to it.
  • the lubricating surface 11 inclined in the direction of rotation R of the rotor 1 relative to the surface plane of the end wall 5 is flat, as in FIG Figures 3 and 4th shown, is formed, and consists of a flat surface which, with respect to the surface plane of the end wall 5 of the rotor 1, includes an angle of inclination ⁇ which is in the range from 0.2 ° to 7 °.
  • the arranged on the end wall 5 of the rotor 1 on each tooth 10 lubricating surface 11 is formed from two adjoining, flat partial surfaces, which are opposite the surface plane of the end wall 5 of the rotor 1 Include an angle of inclination of ⁇ or ⁇ , where ⁇ is smaller than ⁇ , and the partial surface of the lubricating surface 11 inclined at the larger angle of inclination ⁇ merges into the surface plane of the end wall 5 of the rotor 1 at the surface outlet 14.
  • the embodiment shown is the angle of inclination ⁇ 0.2 ° and the angle of inclination ⁇ 5 °.
  • Both partial surfaces of the lubricating surface 11 together form a surface separating end 15 and lie against one another at an obtuse angle, the partial surface of the lubricating surface 11 inclined at the "second" angle of inclination ⁇ at the surface outlet 14 merging into the surface plane of the end wall 5 of the rotor 1.
  • Both partial surfaces of the lubricating surface 11 merge in the direction of the rotor center along a steep surface edge 16 into the surface plane of the end wall 5 of the rotor 1.
  • the rotor 1 is made of the material SintD39
  • the toothed ring 2 is also made of SintD39
  • the bearing ring 12 is made of St38
  • the pump housing 3 is made of the material AISi9Cu3.
  • the bearing sleeve 4 consists of a ceramic material which has a small surface roughness on its bearing surface.
  • the surrounding area of the sleeve guide is structurally included high rigidity is formed in order to effectively prevent a possible deformation of the sleeve bore by the "working load" of the rotor 1 acting on the bearing sleeve 4.
  • the guide length F of the bearing sleeve 4 is approximately 53% to 60% of the total length L of the bearing sleeve 4.
  • the inventive guide length F of the bearing sleeve 4 ensures, in addition to a secure positioning, whether by gluing or by a press fit, of the bearing sleeve 4 in the pump housing 3, in conjunction with the use of a bearing sleeve 4 made of a material with a high modulus of elasticity (e.g. ceramic / modulus of elasticity approx. 380 to 400 GPa) with a simultaneous flexurally rigid design of the bearing sleeve (that counteracts deflection of the bearing sleeve 4 in the case of high radial loads), reliable positioning of the rotor 1 in the pump housing 3.
  • a bearing sleeve 4 made of a material with a high modulus of elasticity (e.g. ceramic / modulus of elasticity approx. 380 to 400 GPa) with a simultaneous flexurally rigid design of the bearing sleeve (that counteracts deflection of the bearing sleeve 4 in the case of high radial
  • the pump housing 3 is made of cast aluminum. In addition to a cost-effective, technically simple production, this also enables high reliability and a long service life.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Claims (6)

  1. Pompe gérotor avec une roue intérieure à denture extérieure, le rotor (1) et une roue extérieure à denture intérieure, l'anneau denté (2), lequel est guidé dans une chambre de travail circulaire d'un boîtier de pompe (3) de sorte que les deux roues dentées soient dans une prise engrenante et tournent autour de leurs axes propres, mais décalés l'un contre l'autre, dans laquelle le rotor (1) est logé d'un côté sur une douille de palier (4), et des parois latérales (6) sont agencées de part et d'autres des parois frontales (5) des roues dentées s'engrenant l'une avec l'autre respectivement, lesquelles peuvent être intégrées dans le boîtier de pompe (3), ou agencées comme couvercle (7) au niveau du boîtier de pompe (3), dans laquelle dans au moins une des ces parois latérales (6), des deux côtés du plan d'excentricité contenant les axes décalés l'un contre l'autre du rotor (1) et de l'anneau denté (2), respectivement un port de pression (8) en forme d'arc de cercle et à l'opposé un port d'aspiration (9) en forme d'arc de cercle sont agencés, caractérisée en ce
    que respectivement une surface de graissage (11) commençant directement dans le plan médian de dent (M), ou commençant « décalée » dans le sens de rotation (R) du rotor (1) devant le plan médian de dent (M), inclinée par rapport au plan de surface de la paroi frontale (5) du rotor (1) dans le sens de rotation (R) du rotor (1) est agencée seulement au niveau de la paroi frontale (5) contiguë au port de pression (8) et au port d'aspiration (9) du rotor (1) au niveau de chaque dent (10) sur toute sa hauteur de dent (H), laquelle surface est formée à partir d'une surface plane ou de plusieurs surfaces partielles toujours planes, se raccordant les unes aux autres, qui englobent par rapport au plan de surface de la paroi frontale (5) du rotor (1) respectivement un angle d'inclinaison (α, β, γ...), lequel se trouve respectivement dans la plage de 0,2 à 7°.
  2. Pompe gérotor selon la revendication 1, caractérisée en ce que la surface de graissage (11) inclinée par rapport au plan de surface de la paroi frontale (5) dans le sens de rotation (R) du rotor (1) est formée à partir de respectivement deux surfaces partielles planes, raccordées l'une à l'autre, qui englobent par rapport au plan de surface de la paroi frontale (5) du rotor (1) respectivement un angle d'inclinaison de (α) ou (β), dans laquelle (α) est inférieur à (β), et la surface partielle inclinée sous l'angle d'inclinaison supérieur (β) de la surface de graissage (11) passe au niveau de la sortie de surface (14) dans le plan de surface de la paroi frontale (5) du rotor (1).
  3. Pompe gérotor selon la revendication 1, ou selon les revendications 1 et 2, caractérisée en ce que les surfaces de graissage (11) agencées dans la paroi frontale (5) du rotor (1) au niveau de chaque dent (10) sur la hauteur de dent entière (H), sont agencées « décalées » dans le sens de rotation (R) du rotor (1) devant le plan médian de dent (M) de sorte que celles-ci commencent en décalage parallèlement au plan médian de dent (M) et du décalage (V) de 20 % au maximum de la largeur de pied de dent (B).
  4. Pompe gérotor selon l'une quelconque ou plusieurs des revendications 1 à 3, caractérisée en ce que la douille de palier (4) consiste en un matériau céramique qui présente au niveau de sa surface de palier une profondeur de rugosité faible.
  5. Pompe gérotor selon l'une quelconque ou plusieurs des revendications 1 à 4, caractérisée en ce que la longueur de guidage (F) de la douille de palier (4) s'élève à 2 fois à 2,3 fois le diamètre de palier (D).
  6. Pompe gérotor selon l'une quelconque ou plusieurs des revendications 1 à 5, caractérisée en ce que la longueur de guidage (F) de la douille de palier (4) s'élève à environ 53 % à 60 % de la longueur entière (L) de la douille de palier (4).
EP15831041.7A 2014-12-09 2015-12-03 Pompe gérotor Active EP3230592B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014018179.0A DE102014018179B3 (de) 2014-12-09 2014-12-09 Gerotorpumpe
PCT/DE2015/000574 WO2016091245A1 (fr) 2014-12-09 2015-12-03 Pompe gérotor

Publications (2)

Publication Number Publication Date
EP3230592A1 EP3230592A1 (fr) 2017-10-18
EP3230592B1 true EP3230592B1 (fr) 2020-12-02

Family

ID=55235178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15831041.7A Active EP3230592B1 (fr) 2014-12-09 2015-12-03 Pompe gérotor

Country Status (8)

Country Link
US (1) US10451056B2 (fr)
EP (1) EP3230592B1 (fr)
JP (1) JP6639505B2 (fr)
KR (1) KR20170093218A (fr)
CN (1) CN107250541B (fr)
BR (1) BR112017010529A2 (fr)
DE (1) DE102014018179B3 (fr)
WO (1) WO2016091245A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD923060S1 (en) 2018-08-09 2021-06-22 Psg Germany Gmbh Pump
USD966342S1 (en) * 2020-02-07 2022-10-11 Pedrollo S.P.A. Electric pump
USD960203S1 (en) * 2020-09-28 2022-08-09 Hugo Vogelsang Maschinenbau Gmbh Pump for liquids

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606172C2 (de) 1976-02-17 1983-12-22 Danfoss A/S, 6430 Nordborg Rotationskolbenmaschine für Flüssigkeiten
CN2229555Y (zh) * 1995-10-13 1996-06-19 阎世英 内啮合齿轮回转泵
KR20040099555A (ko) 2003-05-19 2004-12-02 현대자동차주식회사 오일 펌프의 하우징 구조
US7481633B2 (en) * 2006-06-15 2009-01-27 White Drive Products, Inc. Rotor with cut-outs
DE102006047312A1 (de) 2006-10-06 2008-04-10 Sauer-Danfoss Aps Hydraulische Maschine
JP5591049B2 (ja) * 2010-09-30 2014-09-17 富士重工業株式会社 内接歯車式流体装置
DE102012205406A1 (de) * 2012-04-03 2013-10-10 Robert Bosch Gmbh Hydrostatische Verdrängermaschine mit gekrümmter Eingriffslinie und Flankenlinienrücknahme
CN202612092U (zh) * 2012-06-04 2012-12-19 泰兴市剑力液压件厂 一种低噪音内啮合摆线油泵
JP2016515673A (ja) 2013-03-22 2016-05-30 セッティマ・メッカニカ・ソチエタ・ア・レスポンサビリタ・リミタータ−ソチエタ・ア・ソーチョ・ウニコＳｅｔｔｉｍａ Ｍｅｃｃａｎｉｃａ Ｓ．Ｒ．Ｌ．−Ｓｏｃｉｅｔａ Ａ Ｓｏｃｉｏ Ｕｎｉｃｏ 噛合歯を有する歯車

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
KR20170093218A (ko) 2017-08-14
DE102014018179B3 (de) 2016-02-18
US20170335844A1 (en) 2017-11-23
US10451056B2 (en) 2019-10-22
CN107250541A (zh) 2017-10-13
EP3230592A1 (fr) 2017-10-18
JP2017537265A (ja) 2017-12-14
BR112017010529A2 (pt) 2017-12-26
CN107250541B (zh) 2019-03-26
WO2016091245A1 (fr) 2016-06-16
JP6639505B2 (ja) 2020-02-05

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