Round filter element, in particular for gas filtration

Patent metadata

Field	Value
Publication number	US-11633686-B2
Application number	US-202117171733-A
Country	US
Kind code	B2
Filing date	Feb 9, 2021
Priority date	Oct 17, 2016
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A round filter element has a filter medium body with a wall to be flowed through by a fluid to be purified in a radial direction relative to a longitudinal axis of the filter medium body. A circumferentially extending seal carrier is arranged at or adjacent to an end face of the filter medium body. A sealing element is supported at the seal carrier adjacent to a radial outer side of the filter medium body. A positioning element extends into the filter medium body and engages with a correlated housing-associated counter positioning element of a filter housing when the round filter element is installed in the filter housing. The seal carrier separates flow-tightly a raw side of the round filter element from a clean side of the round filter element when the round filter element is installed in the filter housing.

First claim

What is claimed is:

1. A round filter element comprising:
a filter medium body of a filter medium, the filter medium body having a longitudinal axis and comprising:
a first end face and
a second end face,
wherein the filter medium body surrounds the longitudinal axis, the longitudinal axis extending through the first end face and the second end face;
wherein axial, as used herein, is a direction parallel to the longitudinal axis,
wherein radial, as used herein, is a direction transverse the the longitudinal axis;
a circumferentially extending seal carrier arranged at or adjacent to the first end face of the filter medium body;
a sealing element supported at the seal carrier adjacent to a radial outer side of the filter medium body;
wherein the first end face of the filter medium body is substantially planar and lying in a first end face plane, and having a positioning element formed as a recess or depression at the first end face which ends axially into the first end face plane;
wherein the positioning element is configured to engage with form fit a correlated housing-associated counter positioning element of a filter housing when the round filter element is installed in the filter housing;
wherein the seal carrier and the sealing element separate flow-tightly a raw side of the round filter element from a clean side of the round filter element when the round filter element is installed in the filter housing;
wherein the positioning element, beginning at the radial outer side of the filter medium body, extends inwardly in the radial direction into the filter medium body,
wherein the positioning element defines a recess, depression or a hollow space;
wherein the positioning element is configured and adapted to engage with a correlate housing-associated counter positioning element of a filter housing when the round filter element is installed in the filter housing, the housing-associated counter positioning element positioned at an inner side of the housing cover, the hollow space of the positioning element being configured and adapted to receive the blade-shaped housing-associated counter positioning element projecting into the positioning element of the round filter element.

2. The round filter element according to claim 1 , wherein
the positioning element is disposed at the seal carrier.

3. The round filter element according to claim 1 , wherein
the positioning element is a hollow body comprising a hollow space.

4. The round filter element according to claim 3 , wherein
a bottom is provided in the hollow space of the hollow body and is configured to flow-tightly seal the hollow space relative to the filter medium of the filter medium body.

5. The round filter element according to claim 4 , wherein
the bottom is positioned axially at a level where the seal carrier is axially arranged relative to the longitudinal axis of the filter medium body.

6. The round filter element according to claim 1 , wherein
the positioning element is an elongate body which is elongated along an axis of elongation extending in the radial direction.

7. The round filter element according to claim 1 , wherein
the elongate body has a portion forming a wedge.

8. The round filter element according to claim 1 , further comprising
a support grid disposed on a radially outer circumferential wall of the filter medium body,
wherein the seal carrier is connected to and supported by the support grid.

9. The round filter element according to claim 8 , wherein
the support grid and the seal carrier are embodied as a unitary, one piece component.

10. The round filter element according to claim 1 , wherein
the filter medium of the filter medium body is folded into a plurality of folds forming pleats.

11. A filter device comprising:
a round filter element according to claim 1 ;
a filter housing into which the round filter element is received, the filter housing comprising
a counter positioning element,

wherein the positioning element of the round filter element is configured to engage with the counter positioning element of the filter housing when the round filter element is installed in the filter housing,
wherein the seal carrier and the sealing element separate flow-tightly a raw side of the round filter element from a clean side of the round filter element when the round filter element is installed in the filter housing.

12. The filter device according to claim 11 , wherein
the filter housing comprises
a housing cover,

wherein the counter positioning element is provided on the housing cover at an inner side of the housing cover.

13. The filter device according to claim 11 , wherein
the counter positioning element is a blade.

Assignees

• Mann & Hummel Gmbh

Inventors

• Neef Pascal
• DONAUER Nadine
• Hettkamp Philipp
• Fritzsching Torsten
• Pereira Madeira Pedro Miguel

Classifications

• F02M35/02416

  Fixing, mounting, supporting or arranging filter elements; Filter element cartridges · CPC title

• B01D46/52

  Particle separators, e.g. dust precipitators, using filters embodying folded {corrugated or wound sheet} material · CPC title

• B01D46/2414 Primary

  End caps including additional functions or special forms · CPC title

• B01D2265/021

  Anti-rotational means · CPC title

• B01D2275/208

  Oval shape · CPC title