Water drain mechanism for filter assemblies
AssigneeCummins Filtration IP, Inc.
InventorsMahesh Suhas Bhat, Peter K. Herman, Vivek Mani Tripathi
Life of this patent
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Abstract
A water drain assembly for draining water from a filter assembly comprises a conduit, a water canister, and a venturi. The conduit fluidly connects a bottom portion of the filter assembly to a bottom portion of the water canister. The venturi comprises a first venturi inlet that allows fluid to flow from the fuel tank and into the venturi, a second venturi inlet that allows fluid to flow from the water canister and into the venturi, and a venturi outlet that allows fluid to flow from the venturi and into the filter assembly. The second venturi may comprise a capillary.
Claims23
A water drain assembly for draining water from a filter assembly, the water drain assembly comprising:
- a conduit;
- a water canister, the conduit fluidly connecting a bottom portion of the filter assembly to a bottom portion of the water canister,
- a venturi comprising:
- a first venturi inlet that allows fluid to flow from a fuel tank and into the venturi,
- a second venturi inlet that allows fluid to flow from the water canister and into the venturi, and
- a venturi outlet that allows fluid the flow from the venturi and into the filter assembly,
- wherein the filter assembly, the conduit, the water canister and the venturi form a closed flow loop that does not include the fuel tank.
A fuel system comprising:
- a fuel tank configured to contain fuel to be filtered;
- a filter assembly filtering the fuel from the fuel tank;
- a pump that draws the fuel through the filter assembly;
- and
- a water drain assembly for draining water from the filter assembly, the water drain assembly comprising:
- a conduit,
- a water canister, the conduit fluidly connecting a bottom portion of the filter assembly to a bottom portion of the water canister,
- a venturi comprising:
- a first venturi inlet that allows fluid to flow from the fuel tank and into the venturi,
- a second venturi inlet that allows fluid to flow from the water canister and into the venturi, and
- a venturi outlet that allows fluid to flow from the venturi and into the filter assembly wherein the filter assembly, the conduit, the water canister and the venturi form a closed flow loop that does not include the fuel tank.
Dependencies are inferred from the claim text.