US 12,241,470 B2
Sealing assembly for a pump with a leak path
David S. Malone, Attica, MI (US)
Assigned to Cooper-Standard Automotive Inc., Northville, MI (US)
Filed by COOPER-STANDARD AUTOMOTIVE, INC., Northville, MI (US)
Filed on Feb. 24, 2022, as Appl. No. 17/679,873.
Prior Publication US 2023/0265841 A1, Aug. 24, 2023
Int. Cl. F04D 15/00 (2006.01); F04B 53/06 (2006.01); F04D 1/04 (2006.01); F04D 13/06 (2006.01); F04D 17/16 (2006.01); F04D 29/08 (2006.01); F04D 29/42 (2006.01)
CPC F04D 15/0016 (2013.01) [F04B 53/06 (2013.01); F04D 1/04 (2013.01); F04D 13/0606 (2013.01); F04D 17/16 (2013.01); F04D 29/08 (2013.01); F04D 29/4293 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A sealing assembly for a pump with a leak path comprising:
a pump housing having a cylindrical mounting cavity, a fluid inlet, at least one fluid outlet, and at least one housing passage extending to an exterior surface of the pump housing;
an impeller driven by a motor for moving a fluid from the fluid inlet to the fluid outlet;
a valve for controlling a flow of fluid through the at least one fluid outlet, the valve including an annular interior surface, the annular interior surface bearing against a first surface of the mounting cavity, and an annular exterior surface bearing against a second surface of the mounting cavity and at least one valve passage extending through the valve;
an interior fluid seal located about a perimeter of the valve annular interior surface forming a fluidic seal between the valve annular interior surface and the mounting cavity first surface, the interior fluid seal including an inner leak path in fluid communication with the at least one valve passage, the at least one valve passage collecting fluid leaking in the interior fluid seal from the inner leak path; and
an exterior fluid seal located about a perimeter of the valve annular exterior surface forming a fluidic seal between the valve annular exterior surface and the mounting cavity second surface, the exterior fluid seal including an outer leak path through the exterior fluid seal, the outer leak path in fluid communication with the at least one valve passage and with the at least one housing passage, the outer leak path collecting fluid leaking in the exterior fluid seal and fluid contained in the at least one valve passage and draining the fluid leaking in the exterior fluid seal to the at least one housing passage and to an exterior of the pump housing.