EP1701038A3 - Internal gear pump - Google Patents

Internal gear pump Download PDF

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Publication number
EP1701038A3
EP1701038A3 EP05026417A EP05026417A EP1701038A3 EP 1701038 A3 EP1701038 A3 EP 1701038A3 EP 05026417 A EP05026417 A EP 05026417A EP 05026417 A EP05026417 A EP 05026417A EP 1701038 A3 EP1701038 A3 EP 1701038A3
Authority
EP
European Patent Office
Prior art keywords
seal
gears
internal gear
gap
furthermore
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.)
Granted
Application number
EP05026417A
Other languages
German (de)
French (fr)
Other versions
EP1701038A2 (en
EP1701038B1 (en
Inventor
Reinhard Dipl.-Ing. Pippes (FH)
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.)
Eckerle Industrie Elektronik GmbH
Original Assignee
Eckerle Industrie Elektronik 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 Eckerle Industrie Elektronik GmbH filed Critical Eckerle Industrie Elektronik GmbH
Publication of EP1701038A2 publication Critical patent/EP1701038A2/en
Publication of EP1701038A3 publication Critical patent/EP1701038A3/en
Application granted granted Critical
Publication of EP1701038B1 publication Critical patent/EP1701038B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of 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
    • F04C2/101—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 with a crescent-shaped filler element, located between the inner and outer intermeshing members

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

Die Erfindung betrifft eine Innenzahnradmaschine (Pumpe oder Motor), mit einem mehrteiligen Gehäuse (30), mit zwei darin untergebrachten kämmenden Zahnrädern, bei denen es sich um ein außenverzahntes Ritzel (40) und ein mit diesem mitlaufendes, innenverzahntes Hohlrad (41) handelt. Ferner ist wenigstens eine zwischen axialen Seitenflächen der Zahnräder (40, 41) und einem Gehäuseteil (23, 34) angeordnete Dichtscheibe (55) vorgesehen, die durch ein an ihrer den Zahnrädern (40, 41) abgewandten Seite ausgebildetes Druckfeld mit Hochdruck beaufschlagbar an den Seitenflächen der Zahnräder (40, 41) andrückbar ist. Es ist ferner eine um das Druckfeld umlaufende Dichtung (64) vorgesehen, die zur Abdichtung eines zwischen dem Gehäuseteil (23, 34) und der Dichtscheibe (55) befindlichen Spalts dient. Die Dichtung (64) ist auf ihrer dem Spalt zugewandten Seite durch einen umlaufenden Stützring abgestützt, der mit einem die Dichtung axial hintergreifenden und nach innen formschlüssig abstützenden Stützsteg (75) gestaltet ist.

Figure imgaf001
The invention relates to an internal gear machine (pump or motor), with a multi-part housing (30), with two meshing gears housed therein, which is an externally toothed pinion (40) and an internally toothed ring gear (41). Furthermore, at least one between the axial side surfaces of the gears (40, 41) and a housing part (23, 34) arranged sealing disc (55) is provided, which by a on its the gears (40, 41) side facing pressure field with high pressure can be applied to the Side surfaces of the gears (40, 41) can be pressed. Furthermore, a seal (64) running around the pressure field is provided which serves to seal a gap between the housing part (23, 34) and the sealing washer (55). The seal (64) is supported on its side facing the gap by a circumferential support ring, which is configured with a support web (75) which engages behind the seal axially and in an inwardly positively locking manner.
Figure imgaf001
EP20050026417 2005-02-02 2005-12-03 Internal gear pump Active EP1701038B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510004657 DE102005004657A1 (en) 2005-02-02 2005-02-02 Inner gear wheel machine e.g. inner gear wheel pump, has sealing disk pressed on pressure field, gap between housing part and disk, and support ring arranged with bar that supports seal in form-fit manner and inwardly intervenes with seal

Publications (3)

Publication Number Publication Date
EP1701038A2 EP1701038A2 (en) 2006-09-13
EP1701038A3 true EP1701038A3 (en) 2010-09-22
EP1701038B1 EP1701038B1 (en) 2012-03-07

Family

ID=36293427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050026417 Active EP1701038B1 (en) 2005-02-02 2005-12-03 Internal gear pump

Country Status (2)

Country Link
EP (1) EP1701038B1 (en)
DE (1) DE102005004657A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009045227A1 (en) * 2009-10-01 2011-04-21 Robert Bosch Gmbh Internal gear pump for a hydraulic vehicle brake system
US9217430B2 (en) * 2011-01-06 2015-12-22 Eaton Corporation Semi-plugged star gerotor and method of assembling the same
DE102012213771A1 (en) * 2012-08-03 2014-02-06 Robert Bosch Gmbh Internal gear pump
DE102013201384A1 (en) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Internal gear pump
DE102013204616B4 (en) 2013-03-15 2021-12-09 Robert Bosch Gmbh 2 internal gear pump
JP6347478B2 (en) * 2014-03-06 2018-06-27 日本オイルポンプ株式会社 Pump device
DE102015105933B4 (en) * 2015-04-17 2018-04-26 Schwäbische Hüttenwerke Automotive GmbH pump
CN106286287B (en) * 2015-05-11 2018-12-21 比亚迪股份有限公司 Fork truck, crescent gear pump and the nose balance component for it
DE102018212497A1 (en) * 2018-07-26 2020-01-30 Eckerle Technologies GmbH Fluid delivery device
DE102019217049A1 (en) * 2019-11-06 2021-05-06 Robert Bosch Gmbh Internal gear machine with hydrostatically supported inner sealing part on the filler piece
US11680567B1 (en) 2020-02-27 2023-06-20 Parker-Hannifin Corporation Hydraulic gear pump with axial compensation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997020145A1 (en) * 1995-11-27 1997-06-05 Danfoss A/S Axial sealing
DE10059059A1 (en) * 2000-11-28 2002-05-29 Continental Teves Ag & Co Ohg Internal gear wheel pump, especially for electrohydraulic braking systems, has seal between housing or cover and axial disc in form of axial seal with supporting ring
DE102004016440A1 (en) * 2003-04-14 2004-11-04 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Delivery device as toothed wheel pump in drive train of combustion engines has pressure absorber plate between pressure chamber and housing and decoupled from latter through spacer element

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322240C2 (en) * 1993-07-03 1997-01-09 Eckerle Rexroth Gmbh Co Kg Hydraulic internal gear machine (pump or motor)

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997020145A1 (en) * 1995-11-27 1997-06-05 Danfoss A/S Axial sealing
DE10059059A1 (en) * 2000-11-28 2002-05-29 Continental Teves Ag & Co Ohg Internal gear wheel pump, especially for electrohydraulic braking systems, has seal between housing or cover and axial disc in form of axial seal with supporting ring
DE102004016440A1 (en) * 2003-04-14 2004-11-04 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Delivery device as toothed wheel pump in drive train of combustion engines has pressure absorber plate between pressure chamber and housing and decoupled from latter through spacer element

Also Published As

Publication number Publication date
EP1701038A2 (en) 2006-09-13
EP1701038B1 (en) 2012-03-07
DE102005004657A1 (en) 2006-08-03

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