US 12,146,500 B2
Delivery device for delivering a liquid
Martin Gross, Kaempfelbach (DE)
Assigned to Mahle International GmbH, (DE)
Filed by Mahle International GmbH, Stuttgart (DE)
Filed on Feb. 1, 2023, as Appl. No. 18/104,780.
Claims priority of application No. 10 2022 201 108.2 (DE), filed on Feb. 2, 2022.
Prior Publication US 2023/0243363 A1, Aug. 3, 2023
Int. Cl. F04D 29/10 (2006.01); F04D 1/00 (2006.01); F04D 29/046 (2006.01)
CPC F04D 29/106 (2013.01) [F04D 1/00 (2013.01); F04D 29/046 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A delivery device for delivering a liquid, comprising:
a housing in which a shaft is arranged, the shaft, during operation, rotating about an axial rotation axis;
the shaft non-rotatably connected to a delivery mechanism arranged outside the housing such that the delivery mechanism delivers the liquid during operation;
a bearing arranged in the housing and rotatably mounting the shaft about the rotation axis;
a shaft seal arranged axially between the bearing and the delivery mechanism for sealing the housing against entry of liquid, the shaft seal arranged radially outside the shaft;
a hollow space formed axially between the bearing and the shaft seal;
a collection space arranged radially on a side of the hollow space facing away from the shaft, the collection space fluidically connected to the hollow space via a drain opening;
wherein the hollow space expands radially outward relative to the rotation axis, axially between the bearing and the shaft seal, and
wherein the hollow space expands radially, axially towards the shaft seal.