公开(公告)号：US20220176296A1

公开(公告)日：2022-06-09

申请号：US17546078

申请日：2021-12-09

Applicant: Carl Freudenberg KG

Inventor： Tobias Beisel ,  Alexander Oelsner ,  Christoph Krambs ,  Peter Zimmermann ,  Emre Karasu ,  Peter Capuani

IPC: B01D46/12 ,  B01D46/42 ,  B01D46/00 ,  B01D46/24 ,  B01D46/40 ,  B01D46/62

Abstract: The invention relates to a filter arrangement for cleaning an air stream having at least three filter elements, wherein each filter element has a bellows made of pleated filter medium, wherein the filter elements are arranged in series and any two adjacent filter elements are connected to one another by means of a connecting tab. According to the invention, a fold run-out of all end folds of all bellows is oriented in a particular direction, the connecting tabs are of two different embodiments and the different embodiments of the connecting tabs are arranged alternatingly when viewed in a longitudinal direction of the filter arrangement. Not only is a simple installation of the filter elements in a filter holder thus facilitated but also a defined seating of the filter elements in the filter holder is ensured.

公开(公告)号：US20210023494A1

公开(公告)日：2021-01-28

申请号：US16928014

申请日：2020-07-14

Applicant: Carl Freudenberg KG

Inventor： Alexander Oelsner ,  Volker Braeunling ,  Ulrich Stahl

IPC: B01D46/42 ,  B01D46/00 ,  B60H3/00 ,  B60H3/06

Abstract: A filter element includes: a bellows including a pleated filter medium and edge strips bounding the bellows; and a functional space that adjoins the bellows and is arranged within the edge strips, having an interface between the bellows and functional space. The interface is provided with at least one cutout for receiving sensor elements and/or fragrancing elements.

公开(公告)号：US11684884B2

公开(公告)日：2023-06-27

申请号：US17071026

申请日：2020-10-15

Applicant: Carl Freudenberg KG

Inventor： Alexander Oelsner ,  Gennaro De Angelis ,  Ulrich Stahl ,  Peter Capuani ,  Oliver Staudenmayer

IPC: B01D46/00 ,  B01D46/52

CPC classification number: B01D46/521 ,  B01D46/0036 ,  B01D2239/0241 ,  B01D2253/102 ,  B01D2265/04

Abstract: A filter element for filtration of an air stream includes: a folded filter medium forming a bellows, the filter medium being constructed at least in two layers and having a particle filter layer, an electrically conductive filter layer, and at least one edge band, the at least one edge band being connected to at least one outer side of the bellows. At least one further edge band is connected to an outer side of the bellows. The at least one further edge band is electrically conductive. The at least one further edge band forms a pocket open towards one side.

公开(公告)号：US10786773B2

公开(公告)日：2020-09-29

申请号：US15818812

申请日：2017-11-21

Applicant: Carl Freudenberg KG

Inventor： Regina Brack ,  Uwe Haefner ,  Alexander Oelsner

IPC: B01D46/00 ,  B01D46/52 ,  B01D39/14 ,  B60H3/06 ,  B01D46/10

Abstract: In an embodiment, the present invention provides a filter element including: a bellows in the shape of a zig-zag having pleat walls and a pleat ridge, edges of the pleat walls and the pleat ridge being provided with edge elements; and a frame element being assigned to at least one end pleat of the bellows. The frame element surrounds the end pleat so as to form a positive fit on both sides, the frame element being fixed to the edge elements.

公开(公告)号：US12083467B2

公开(公告)日：2024-09-10

申请号：US17546078

申请日：2021-12-09

Applicant: Carl Freudenberg KG

Inventor： Tobias Beisel ,  Alexander Oelsner ,  Christoph Krambs ,  Peter Zimmermann ,  Emre Karasu ,  Peter Capuani

IPC: B01D46/12 ,  B01D46/00 ,  B01D46/24 ,  B01D46/40 ,  B01D46/42 ,  B01D46/62

CPC classification number: B01D46/12 ,  B01D46/0008 ,  B01D46/0016 ,  B01D46/2403 ,  B01D46/406 ,  B01D46/4236 ,  B01D46/62

Abstract: The invention relates to a filter arrangement for cleaning an air stream having at least three filter elements, wherein each filter element has a bellows made of pleated filter medium, wherein the filter elements are arranged in series and any two adjacent filter elements are connected to one another by means of a connecting tab. According to the invention, a fold run-out of all end folds of all bellows is oriented in a particular direction, the connecting tabs are of two different embodiments and the different embodiments of the connecting tabs are arranged alternatingly when viewed in a longitudinal direction of the filter arrangement. Not only is a simple installation of the filter elements in a filter holder thus facilitated but also a defined seating of the filter elements in the filter holder is ensured.

公开(公告)号：US20180154298A1

公开(公告)日：2018-06-07

申请号：US15818812

申请日：2017-11-21

Applicant: Carl Freudenberg KG

Inventor： Regina Brack ,  Uwe Haefner ,  Alexander Oelsner

IPC: B01D46/52 ,  B01D46/00 ,  B01D39/14 ,  B60H3/06

Abstract: In an embodiment, the present invention provides a filter element including: a bellows in the shape of a zig-zag having pleat walls and a pleat ridge, edges of the pleat walls and the pleat ridge being provided with edge elements; and a frame element being assigned to at least one end pleat of the bellows. The frame element surrounds the end pleat so as to form a positive fit on both sides, the frame element being fixed to the edge elements.