Filter device

Patent metadata

Field	Value
Publication number	US-9687768-B2
Application number	US-201514704003-A
Country	US
Kind code	B2
Filing date	May 5, 2015
Priority date	May 5, 2014
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

A filter device has a filter housing and a plate-shaped filter element that is arranged in the filter housing. The filter element has oppositely positioned lateral surfaces that form an inflow side for a fluid to be filtered and an outflow side for the clean fluid. A first clean fluid outflow opening is introduced into the filter housing for discharging the clean fluid. An outflow pipe passes through the filter element for discharging the clean fluid through a second clean fluid outflow opening provided at the outflow pipe. The first clean fluid outflow opening is arranged at a spacing relative to the outflow pipe.

First claim

What is claimed is:

1. A filter device comprising:
a filter housing having:
a housing base;
a housing cover received onto the housing base;
wherein the housing base and cover define and enclose a chamber therein;

a filter element that is plate-shaped and arranged within the chamber in the filter housing, the filter element having a filter medium comprising oppositely positioned lateral surfaces that form an inflow side for a fluid to be filtered and an outflow side for the clean fluid;
a through opening extending completely through the filter medium from the inflow side to the outflow side;
a first clean fluid outflow opening introduced into the filter housing and configured to discharge the clean fluid;
an outflow pipe passing through the through opening of the filter element and configured to discharge the clean fluid through a second clean fluid outflow opening provided at the outflow pipe;
wherein the first clean fluid outflow opening is separate from and spaced apart from the outflow pipe.

2. The filter device according to claim 1 , wherein
the first clean fluid outflow opening has a cross-sectional area that is greater than a cross-sectional area of the outflow pipe.

3. The filter device according to claim 1 , further comprising
an annular sealing element arranged on an outer circumference of the through opening where the through opening meets the filter medium, the annular sealing element having a flange portion projecting inwardly from the filter medium into an interior of the through opening;
wherein the outflow pipe is resting directly on the annular sealing element.

4. The filter device according to claim 3 , further comprising:
a support part formed on an interior wall of the housing base or the housing cover and projecting inwardly towards the through opening of the filter element;
wherein the outflow pipe is arranged directly on an interior wall of a different one of the housing base or the housing cover with respect to the support part;
wherein the support part is supported on the filter element at the annular sealing element.

5. The filter device according to claim 4 , wherein
the support part contacts the annular sealing element on a first side of the annular sealing element that is opposite a second side of the annular sealing element,
wherein the outflow pipe is resting on the second side.

6. The filter device according to claim 5 , wherein
the support part projects into the annular sealing element.

7. The filter device according to claim 5 , wherein
the support part has an end face and the end face is supported directly on the annular sealing element.

8. The filter device according to claim 4 , wherein
the support part is embodied as a support grid having flow openings for flow to enter the outflow pipe from the chamber.

9. The filter device according to claim 1 , wherein
the filter housing comprises a clean chamber that is facing the outflow side of the filter element, wherein the first clean fluid outflow opening is arranged in the clean chamber of the filter housing.

10. The filter device according to claim 1 , wherein
the cover is configured to be attached to the housing base member,
wherein the first clean fluid outflow opening is introduced into the cover.

11. The filter device according to claim 1 , wherein
the first clean fluid outflow opening is introduced into a sidewall of a housing component of the filter housing.

12. The filter device according to claim 1 , wherein
the outflow pipe is embodied monolithically with either the housing base or the housing cover.

13. The filter device according to claim 1 , wherein,
via the first clean fluid outflow opening, primary air is supplied to an internal combustion engine and,
via the outflow pipe, secondary air is supplied to an auxiliary device that is embodied separate from the internal combustion engine.

14. A filter element for a filter device according to claim 1 , the filter element comprising:
a filter medium having:
a first lateral surface forming an inflow side of the filter element;
a second lateral surface forming an outflow side of the filter element;
a through opening formed as a cutout extending completely through the filter medium from the inflow side to the outflow side;

an annular sealing element arranged on an outer circumference of the through opening where the through opening meets the filter medium, the annular sealing element having a flange portion projecting inwardly from the filter medium into an interior of the through opening.

15. The filter element according to claim 14 , wherein
the flange portion has a circumferential groove formed into the annular sealing element,
wherein the circumferential groove is configured receive and engage an end portion of an outflow pipe.

Assignees

• Mann & Hummel Gmbh

Inventors

• Wagner Fabian
• Hasenfratz Robert
• Roesgen André
• Thalmann Christian
• Pflueger Frank

Classifications

• B01D46/521

  using folded, pleated material · CPC title

• F01N3/303

  Filtering additional air · CPC title

• F02M35/024

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

• F02M35/02491

  Flat filter elements, e.g. rectangular · CPC title

• F02M35/0204

  for connecting or joining to other devices, e.g. pipes · CPC title