Filter media pack with porous wrapper

Patent metadata

Field	Value
Publication number	US-10814263-B2
Application number	US-201615777532-A
Country	US
Kind code	B2
Filing date	Nov 14, 2016
Priority date	Nov 20, 2015
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A filter media block and filter element incorporating same are provided. Methods of forming a filter media block and filter element are also provided. The filter media block includes a block of filter media and an outer permeable layer. The outer layer provides support for the block of filter media.

First claim

What is claimed is:

1. A filter element comprising:
a media pack including:
a filter media material forming a block of filter media defining an outer peripheral surface extending between a first flow face and a second flow face;
a second material secured to the outer peripheral surface of the block of filter media forming an outer layer surrounding the block of filter media, the second material extending less than an entire distance between the first and second flow faces defining a portion of the outer periphery extending axially between the second material and one of the first and second flow faces that is not covered by the second material;

a first seal attached to the media pack, the first seal having a first portion in axial overlap with the outer layer and a second portion in axial overlap with the potion of the outer periphery that is not covered by the outer layer; and
wherein the filter media and second material are permeable, the filter media has a first porosity and the second material has a second porosity that is greater than the first porosity.

2. The filter element of claim 1 , wherein the first seal is a mold in place seal.

3. The filter element of claim 1 , wherein the first and second portions of the first seal are formed as a continuous body of seal material.

4. The filter element of claim 1 , wherein the filter media has a first tensile strength that is less than a second tensile strength of the second material.

5. The filter element of claim 1 , wherein the second material extends axially between the first and second flow faces at least fifty percent the axial distance between the first and second flow faces.

6. The filter element of claim 1 , wherein the first material has a Mullen burst strength that is less than the Mullen burst strength of the second material.

7. The filter element of claim 1 , wherein the first seal and second material provide an attachment for securing the first seal to the media pack capable of preventing failure from a loading of at least 35 pounds per inch of seal measured around the outer peripheral surface of the block filter media.

8. A method of forming a filter element of claim 1 , comprising:
providing a block of filter media defining an outer peripheral surface extending between a first flow face and a second flow face;
securing a second material that is permeable to the outer peripheral surface of the block of filter media forming an outer layer surrounding the block of filter media, the second material extending less than an entire distance between the first and second flow faces defining a portion of the outer periphery extending axially between the second material and one of the first and second flow faces that is not covered by the second material; and
attaching a first seal to the media pack, the first seal having a first portion in axial overlap with the outer layer and a second portion in axial overlap with the portion of the outer periphery that is not covered by the outer layer; and
wherein the filter media and second material are permeable, the filter media has a first porosity and the second material has a second porosity that is greater than the first porosity.

9. A filter element comprising:
a media pack including:
a filter media material forming a block of filter media defining an outer peripheral surface extending between a first flow face and a second flow face;
a second material secured to the outer peripheral surface of the block of filter media forming an outer layer surrounding the block of filter media, the second material extending less than an entire distance between the first and second flow faces defining a portion of the outer periphery extending axially between the second material and one of the first and second flow faces that is not covered by the second material;

a first seal attached to the media pack, the first seal having a first portion in axial overlap with the outer layer and a second portion in axial overlap with the potion of the outer periphery that is not covered by the outer layer; and
wherein the filter media is a cellulose material and the second material is a fabric material.

10. A filter element comprising:
a media pack including:
a filter media material forming a block of filter media defining an outer peripheral surface extending between a first flow face and a second flow face;
a second material secured to the outer peripheral surface of the block of filter media forming an outer layer surrounding the block of filter media, the second material extending less than an entire distance between the first and second flow faces defining a portion of the outer periphery extending axially between the second material and one of the first and second flow faces that is not covered by the second material;

a first seal attached to the media pack, the first seal having a first portion in axial overlap with the outer layer and a second portion in axial overlap with the potion of the outer periphery that is not covered by the outer layer; and
wherein the second material is a non-woven polyester fabric.

11. A filter element comprising:
a media pack including:
a filter media material forming a block of filter media defining an outer peripheral surface extending between a first flow face and a second flow face;
a second material secured to the outer peripheral surface of the block of filter media forming an outer layer surrounding the block of filter media, the second material extending less than an entire distance between the first and second flow faces defining a portion of the outer periphery extending axially between the second material and one of the first and second flow faces that is not covered by the second material;

a first seal attached to the media pack, the first seal having a first portion in axial overlap with the outer layer and a second portion in axial overlap with the potion of the outer periphery that is not covered by the outer layer; and
further including an adhesive between the outer peripheral surface of the block of filter media and the second material.

12. A filter element comprising:
a media pack including:
a filter media material forming a block of filter media defining an outer peripheral surface extending between a first flow face and a second flow face;
a second material secured to the outer peripheral surface of the block of filter media forming an outer layer surrounding the block of filter media, the second material extending less than an entire distance between the first and second flow faces defining a portion of the outer periphery extending axially between the second material and one of the first and second flow faces that is not covered by the second material;

a first seal attached to the media pack, the first seal having a first portion in axial overlap with the outer layer and a second portion in axial overlap with the potion of the outer periphery that is not covered by the outer layer;
the second material is a single layer surrounding the block of filter media and extends circumferentially around the block of filter media between a first edge and a second edge;
the first and second edges are spaced apart from one another forming a gap therebetween;
wherein the second material is not overlapped with itself; and
the first seal contacting the outer peripheral surface of the block of filter media between the first and second edges and filling the gap.

13. A filter element comprising:
a media pack including:
a filter media material forming a block of filter media defining an outer peripheral surface extending between a first flow face and a second flow face;
a second material secured to the outer

Assignees

• Krull Timothy L
• Von Seggern Michael J
• Rogers Jeffrey E D
• Baldwin Filters Inc

Inventors

• Krull Timothy L
• Von Seggern Michael J
• Rogers Jeffrey E D

Classifications

• F02M35/02483

  Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements · CPC title

• F02M35/0245

  Pleated, folded, corrugated filter elements, e.g. made of paper · CPC title

• F02M35/02425

  Support structures increasing the stability or stiffness of the filter element · CPC title

• F02M35/024

  using filters, e.g. moistened (F02M35/026 takes precedence; cleaning of the filtering material F02M35/08) · CPC title

• F02M35/02408

  Manufacturing filter elements · CPC title