US 12,140,145 B2
Gear pump
Roland Stoessel, Ebern (DE)
Assigned to Valeo Powertrain GmbH, Ebern (DE)
Filed by Valeo Powertrain GmbH, Ebern (DE)
Filed on Oct. 19, 2023, as Appl. No. 18/490,015.
Claims priority of application No. 102022128264.3 (DE), filed on Oct. 25, 2022.
Prior Publication US 2024/0133377 A1, Apr. 25, 2024
Prior Publication US 2024/0229790 A9, Jul. 11, 2024
Int. Cl. F04C 2/18 (2006.01); F04C 15/00 (2006.01)
CPC F04C 2/18 (2013.01) [F04C 15/0061 (2013.01); F04C 15/0088 (2013.01); F04C 2230/20 (2013.01); F04C 2240/30 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A gear pump comprising:
a pump housing,
a rotatably mounted drive shaft extending into the pump housing,
a rotor of a drive motor, said rotor being attached in a rotationally fixed manner on the drive shaft, and
a drive gearwheel which is arranged in a rotationally fixed manner on the drive shaft in the pump housing,
wherein the drive gearwheel is fixed axially on the drive shaft,
wherein the drive gearwheel together with the pump housing forms an axial bearing for the rotor,
wherein the gear pump is single-layered,
wherein the drive gearwheel is in meshed engagement with two driven gearwheels, each of the two driven gearwheels in turn are in engagement with one further driven gearwheels at a distance from the drive gearwheel, in respectively, such that a four-flow design is achieved, and
wherein at least one oil intake duct is formed in the pump housing and extends from an oil intake opening in an underside of the pump housing to each of gearwheel pairs of the gear pump lying in one plane.