US 11,808,263 B2
Pump comprising an axially acting spring gasket
Claus Welte, Aulendorf (DE)
Assigned to Schwäbische Hüttenwerke Automotive GmbH, Aalen (DE)
Filed by Schwäbische Hüttenwerke Automotive GmbH, Aalen-Wasseralfingen (DE)
Filed on Jun. 18, 2021, as Appl. No. 17/351,382.
Claims priority of application No. 10 2020 116 748.2 (DE), filed on Jun. 25, 2020.
Prior Publication US 2021/0404466 A1, Dec. 30, 2021
Int. Cl. F04C 15/00 (2006.01); F04C 13/00 (2006.01); F04C 15/06 (2006.01); F04C 19/00 (2006.01); F16H 57/04 (2010.01); F01C 19/00 (2006.01)
CPC F04C 15/0023 (2013.01) [F01C 19/005 (2013.01); F04C 13/00 (2013.01); F04C 15/06 (2013.01); F04C 2240/30 (2013.01); F05C 2201/00 (2013.01); F05C 2201/0448 (2013.01); F16H 57/0436 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pump for applying fluid to an assembly, the pump comprising:
a pump housing including
a circumferential wall surrounding a delivery chamber of the pump;
an end-facing wall having an outer end-facing surface facing axially positioned away from the delivery chamber;
an inlet for receiving fluid into the delivery chamber;
an outlet for the fluid which emerges from the outer end-facing surface via the delivery chamber;
a delivery member which rotates within the delivery chamber, the delivery member delivering fluid within the delivery chamber from a low-pressure side of the pump which contains the inlet to another portion of the delivery chamber located on a high-pressure side of the pump which contains the outlet; and
an axial gasket being a spring gasket, the spring gasket fully encircles the outlet over 360° when viewed in an axial view of the pump in order to separate the outlet from the low-pressure side of the pump, wherein the spring gasket is annularly self-contained within the pump and is one of a disc spring or a hollow-profile spring or a V-profile spring or a bellows spring, and during operation of the pump the spring gasket performs
(i) a function of sealing the outlet of the pump housing from the low-pressure side of the pump, and
(ii) a function of a pressing device to keep the circumferential wall of the pump housing engaged to the end-facing wall of the pump housing in a fluid-tight axial pressure contact so that the spring gasket alone performs the function of sealing the outlet of the pump housing from the low-pressure side of the pump.