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1. WO2020192819 - EXTERNAL GEAR PUMP

Publication Number WO/2020/192819
Publication Date 01.10.2020
International Application No. PCT/DE2020/100134
International Filing Date 26.02.2020
IPC
F01C 21/10 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
21Component parts, details, or accessories, not provided for in groups F01C1/-F01C20/121
10Outer members for co-operation with rotary pistons; Casings
F04C 2/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
F04C 2/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
14with toothed rotary pistons
18with similar tooth forms
F04C 15/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
15Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/-F04C14/164
CPC
F01C 21/108
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
21Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
10Outer members for co-operation with rotary pistons; Casings
104Stators; Members defining the outer boundaries of the working chamber
108with an axial surface, e.g. side plates
F04C 15/0026
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
15Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
0003Sealing arrangements in rotary-piston machines or pumps
0023Axial sealings for working fluid
0026Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
F04C 2/086
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
082Details specially related to intermeshing engagement type machines or pumps
086Carter
F04C 2/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
14with toothed rotary pistons
18with similar tooth forms
F04C 2240/30
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
2240Components
30Casings or housings
Applicants
  • SCHAEFFLER TECHNOLOGIES AG & CO. KG [DE]/[DE]
Inventors
  • BASTIAN, Uwe
  • SCHNEIDER, Christopher
  • GRENZHÄUSER, Matthias
Priority Data
10 2019 107 961.628.03.2019DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) AUßENZAHNRADPUMPE
(EN) EXTERNAL GEAR PUMP
(FR) POMPE À ENGRENAGES EXTÉRIEURS
Abstract
(DE)
Die Erfindung betrifft eine Außenzahnradpumpe (1) zur Hydraulikförderung in einer Hydrauliksteuerung (10), die zwei Steuerplatten (11,12) umfasst, die einen Pumpenraum (13) begrenzen, in dem zwei Pumpenräder (14,15) miteinander kämmen, und zwischen denen ein Zwischenblech (19) angeordnet ist. Um die Außenzahnradpumpe (1) funktionell und/oder herstellungstechnisch zu verbessern, umfasst das Zwischenblech (19) mindestens einen Vorspannbereich (20), durch den das Zwischenblech (19) federartig gegen eine Axialplatte (22) vorspannbar ist, die dadurch axial gegen die Pumpenräder (14,15) angedrückt wird.
(EN)
The invention relates to an external gear pump (1) for hydraulic conveyance in a hydraulic control system (10), which external gear pump comprises two control plates (11, 12), which delimit a pump chamber (13) in which two pump gears (14, 15) mesh with each other, and between which an intermediate plate (19) is arranged. In order to improve the external gear pump (1) with respect to functionality and/or production, the intermediate plate (19) comprises at least one pre-tension region (20), by means of which the intermediate plate (19) can be pre-tensioned against an axial plate (22) in the manner of a spring, which axial plate is pressed axially against the pump gears (14, 15).
(FR)
L'invention concerne une pompe à engrenages extérieurs (1) permettant un refoulement hydraulique dans une commande hydraulique (10), la pompe comprenant deux plaques de commande (11, 12), qui délimitent une chambre (13) de pompe, dans laquelle deux roues (14, 15) de pompe s'engrènent, et entre lesquelles est disposée une tôle intermédiaire (19). L'objet de l'invention est d'améliorer la pompe à engrenages extérieurs (1) du point de vue fonctionnel et/ou de la technique de fabrication. À cet effet, la tôle intermédiaire (19) comprend au moins une zone de précontrainte (20), au moyen de laquelle la tôle intermédiaire (19) peut être précontrainte élastiquement contre une plaque axiale (22), qui est de cette manière pressée axialement contre les roues (14, 15) de pompe.
Latest bibliographic data on file with the International Bureau