Filter assembly including separate fuel and water flow paths

Patent metadata

Field	Value
Publication number	US-12515152-B2
Application number	US-202118021332-A
Country	US
Kind code	B2
Filing date	Aug 16, 2021
Priority date	Aug 18, 2020
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

A filter assembly comprises a housing defining an internal volume and comprising an inlet for receiving fuel, a first outlet to allow filtered fuel to exit the internal volume, and a second outlet to allow water separated from the fuel to exit the internal volume. A filter element is disposed within the internal volume for filtering the fuel to provide the filtered fuel and separate the water from the fuel. An outlet assembly is fluidly coupled to the first and second outlets and comprises a first flow path structured to communicate the filtered fuel to the first outlet, and a second flow path fluidly coupled to the internal volume of the housing and to the water reservoir so as to receive the water from the internal volume and communicate the water to the water reservoir. The second flow path is fluidly isolated from the first flow path.

First claim

What is claimed is:

1 . A filter assembly, comprising:
a housing defining an internal volume, the housing comprising:
an inlet for receiving fuel,
a first outlet to allow filtered fuel to exit the internal volume, and
a second outlet to allow water separated from the fuel to exit the internal volume;
a filter element disposed within the internal volume for filtering the fuel so as to provide the filtered fuel and separate the water from the fuel, wherein the filter element comprises:
a filter media, and
an endplate coupled to an end of the filter media; and
an outlet assembly coupled to the endplate, wherein the outlet assembly is fluidly coupled to each of the first outlet and the second outlet, the outlet assembly comprising:
an outer wall defining a flow channel therethrough; and
a set of inner walls disposed within the flow channel and extending radially from a central axis of the outer wall to an inner surface of the outer wall such that the flow channel is divided into a plurality of flow paths, a first set of the plurality of flow paths forming a first flow path, and a second set of the plurality of flow paths forming a second flow path, wherein:
the first flow path is fluidly coupled to a clean side of the filter element and the first outlet so as to receive the filtered fuel from the clean side of the filter element and communicate the filtered fuel to the first outlet, and
the second flow path is fluidly coupled to the internal volume of the housing and to the second outlet so as to receive the water from the internal volume and communicate the water through the second outlet.

2 . The filter assembly of claim 1 , wherein: the second outlet is axially aligned with a longitudinal axis of the filter assembly, and the first outlet is oriented orthogonal to the second outlet.

3 . The filter assembly of claim 1 , wherein at least a portion of the outlet assembly that defines the first flow path and the second flow path is disposed through the second outlet.

4 . The filter assembly of claim 1 , wherein the outer wall and the set of inner walls are partially disposed in the second outlet such that a portion of the outer wall extends into the internal volume defined by the housing.

5 . The filter assembly of claim 1 , wherein:
the filter element defines a central channel, and the outlet assembly defines a filtered fuel inlet in fluid communication with the central channel and the first flow path, the filtered fuel inlet configured to receive filtered fuel from the central channel.

6 . The filter assembly of claim 1 , wherein the outer wall defines a first outer wall opening at a location of the outer wall that is aligned with the corresponding first outlet.

7 . The filter assembly of claim 1 , wherein a portion of the outer wall proximate to the filter element defines a second outer wall opening at location that is axially and radially offset from the first outer wall opening proximate to the filter element, the second outer wall opening in fluid communication with the internal volume.

8 . The filter assembly of claim 1 , wherein the outlet assembly further comprises an outlet assembly first sealing member disposed between the outer wall and the second outlet at a location proximate to the filter element.

9 . The filter assembly of claim 8 , wherein the outlet assembly further comprises an outlet assembly second sealing member disposed between the outer wall and the second outlet at a lower end of the outlet assembly distal from the filter element.

10 . The filter assembly of claim 8 , wherein:
the housing comprises an upper portion defining an upper portion base, a notch being defined on an inner periphery of the upper portion base; and the outlet assembly further comprises an outlet assembly protrusion protruding radially outwards form the outer wall at a location that is a axially upwards of the outlet assembly first sealing member, the outlet assembly protrusion configured to seat in the notch when the outlet assembly is properly installed in the housing.

11 . A filter element for filtering fuel and separating water from fuel, the filter element configured to be disposed within an internal volume of a housing and comprising:
a filter media; an endplate coupled to an end of the filter media; and an outlet assembly coupled to a bottom surface of the endplate, the outlet assembly comprising: an outer wall defining a flow channel therethrough, and a set of inner walls disposed within the flow channel and extending radially from a central axis of the outer wall to an inner surface of the outer wall such that the flow channel is divided into a plurality of flow paths, a first set of the plurality of flow paths forming a first flow path fluidly coupled to a clean side of the filter media and configured to be fluidly coupled to a first outlet of the housing so as to receive the filtered fuel from the clean side of the filter media and communicate the filtered fuel to the first outlet so as to allow the filtered fuel to exit the internal volume, and a second set of the plurality of flow paths forming a second flow path configured to be fluidly coupled to the internal volume of the housing and to a second outlet of the housing so as to receive the water from the internal volume and communicate the water through the second outlet so to allow the water separated from the fuel to exit the internal volume.

12 . The filter element of claim 11 , wherein the outer wall and the set of inner walls are configured to be partially disposed in the second outlet such that a portion of the outer wall extends into the internal volume defined by the housing when the filter element is installed in the housing.

13 . The filter element of claim 11 , wherein:
the filter media defines a central channel, and the outlet assembly defines a filtered fuel inlet in fluid communication with the central channel and the first flow path, the filtered fuel inlet configured to receive filtered fuel from the central channel.

14 . The filter element of claim 11 , wherein the outer wall defines a first outer wall opening at locations of the outer wall that is configured to align with the first outlet when the filter element is installed in the housing.

15 . The filter element of claim 11 , wherein a portion of the outer wall proximate to the filter element defines a second outer wall opening at a location that is axially and radially offset from the first outer wall opening proximate to the filter media, the second outer wall opening configured to be in fluid communication with the internal volume when the filter element is installed in the housing.

16 . The filter element of claim 11 , wherein the outlet assembly further comprises an outlet assembly first sealing member disposed on a radially outer surface of the outer wall at a location proximate to the filter media.

17 . The filter element of claim 16 , wherein the outlet assembly further comprises an outlet assembly second sealing member disposed on a radially outer surface of the outer wall at a lower end of the outlet assembly distal from the filter media.

18 . The filter element of claim 11 , wherein the outlet assembly further comprises:
a plurality of arms projecting radially outwards from outer surfaces of the outer wall, each of the plurality of arms comprising:
an arm first portion having a constant radial width, and
an arm second portion tapering radially inwards from the arm first portion towards an outlet assembly base that is located distal from the endplate, the arm fir

Assignees

• Cummins Filtration Inc

Inventors

• Abdalla Wassem
• Singh Jayant
• Padale Sagar
• Lagad Ujjwala

Classifications

• B01D2201/304

  Seals or gaskets · CPC title

• B01D2201/302

  having inlet or outlet ports · CPC title

• B01D35/005

  Filters specially adapted for use in internal-combustion engine lubrication or fuel systems · CPC title

• B01D29/15

  arranged for inward flow filtration · CPC title

• B01D2201/303

  not arranged concentrically · CPC title