Obround filter element

Patent metadata

Field	Value
Publication number	US-11459986-B2
Application number	US-201916580131-A
Country	US
Kind code	B2
Filing date	Sep 24, 2019
Priority date	Sep 24, 2018
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

The disclosed filter element is configured for use within a housing of a filter assembly. The filter element includes an obround ring of filter media extending between an upper and lower endcaps and defines a dirty wet fuel region. The upper endcap of the filter element defines an inlet for receiving the dirty wet fuel, which flows into the dirty wet fuel region and radially outward through the filter media. The upper endcap may include an insert to define a flow chamber to distribute fuel into the dirty wet fuel region. A clean wet fuel region is defined outside the filter element and within the housing. After flowing through the inlet and the filter media clean wet fuel fills the clean wet fuel region. A water separator is disposed external to the filter media and defines a clean dry fuel region in communication with an outlet defined by the upper endcap.

First claim

What is claimed:

1. A filter element for use in a housing of a filter assembly comprising:
an obround ring of filter media defining an obround filtration space and extending axially between a first obround endcap and a second obround endcap, said first obround endcap defining a fluid inlet, and a fluid outlet;
an obround insert received in the first obround endcap, wherein a fluid flow path is defined between said obround insert and said first obround endcap, said fluid flow path is in communication with the fluid inlet and said obround filtration space;
a water separator disposed externally to the obround ring of filter media, said water separator including an outlet tube at least partially surrounded by a hydrophobic mesh;
a peripheral wrapper extending between the first and second obround endcaps, said peripheral wrapper comprising a grid of ribs surrounding the obround ring of filter media and the water separator; and
wherein, unfiltered fluid is delivered to the filter element through the fluid inlet, flows through the fluid flow path into the obround filtration space, unfiltered fluid flows radially outward through the obround ring of filter media coalescing water and separating particulates from the fluid to form filtered fluid and coalesced water, said filtered fluid flows through the hydrophobic mesh into said water separator, separating said coalesced water from the filtered fluid to form filtered dry fluid, and said filtered dry fluid flows through the outlet tube to exit the filter element.

2. The filter element of claim 1 , wherein the first obround endcap includes stand-offs between the first obround end cap and the obround insert to maintain the obround insert in a spaced apart relationship to the first obround end cap.

3. The filter element of claim 1 , wherein the water separator includes an outlet tube extending from said fluid outlet to a free end in said water separator, said outlet tube defining a clean fuel outlet extending from said free end, and including one or more air bleed holes axially spaced from said free end and communicating with said clean fuel outlet.

4. The filter element of claim 1 , wherein the first obround endcap includes an air management aperture defined by an air management post projecting from an inside surface of the first obround endcap, said air management aperture extending through said first obround end cap.

5. The filter element of claim 1 , wherein the obround insert includes an obround inner rim axially projecting toward said ring of filter media, said inner rim defining a distribution channel open to said obround filtration space, said obround insert defining at least one opening between said fluid flow path and said distribution channel.

6. The filter element of claim 1 , wherein the second endcap includes one or more engagement hooks for engagement with complementary structures on a filter housing.

7. The filter element of claim 1 , wherein at least one of the first obround end cap, second obround end cap, peripheral wrapper, and the ring of filter media includes a conductive or electrostatically conductive material.

8. The filter element of claim 1 , wherein said hydrophobic mesh defines a clean dry fuel region surrounding said outlet tube and bounded by the obround endcap insert, the second obround endcap and the hydrophobic mesh, said clean dry fuel region in communication with said fluid outlet and isolated from said fluid flow path.

Assignees

• Baldwin Filters Inc

Inventors

• Moore Jonathan D
• Merritt Steven J

Classifications

• B01D46/0012

  In-line filters · CPC title

• F02M37/34 Primary

  by the filter structure, e.g. honeycomb, mesh or fibrous · CPC title

• B01D2201/602

  Oval · CPC title

• B01D2201/0415

  Details of supporting structures · CPC title

• B01D29/56

  in series connection · CPC title