Filter and filter cartridge

Patent metadata

Field	Value
Publication number	US-11719202-B2
Application number	US-202017121932-A
Country	US
Kind code	B2
Filing date	Dec 15, 2020
Priority date	Jun 18, 2014
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

A filter cartridge for a filter for filtration of a fluid has a prismatic basic shape with a base face and a top face arranged parallel to each other and each having a polygonal basic shape. The prismatic basic shape is provided with a first lateral face and a second lateral face neighboring the first lateral face, wherein the first lateral face is an inflow surface and is substantially positioned perpendicular to the neighboring second lateral face. The prismatic basic shape has a third lateral face that is an outflow surface and is positioned at an angle relative to the first lateral face, wherein the angle is greater than 10° and smaller than 80°. A filter with such a filter cartridge is disclosed.

First claim

What is claimed is:

1. A filter cartridge for a filter for filtration of a gaseous fluid, the filter cartridge comprising:
a prismatic basic shape comprising a base face and a top face arranged parallel to each other and each having a polygonal basic shape;
wherein the parallel arranged base face and top face have a polygonal basic shape;
the prismatic basic shape further comprising a first lateral face and a second lateral face neighboring the first lateral face, wherein the first lateral face is an inflow surface and is substantially positioned perpendicular to the base face and the top face;
the prismatic basic shape further comprising a third lateral face that is an outflow surface and is positioned at an angle relative to the first lateral face, wherein the angle is greater than 10° and smaller than 80°;
wherein the prismatic basic shape is a quadrangle and comprises a fourth lateral face positioned parallel to and opposite the second lateral face;
the filter cartridge further comprising:
a filter cartridge frame;
a seal arranged in the area of the outflow surface and configured to separate a filter interior into a clean side and a raw side, the seal having a sealing surface extending parallel to the outflow surface;
wherein the filter cartridge frame has a contact surface configured and adapted to support a support surface of a blade projecting from a housing;

wherein the third lateral face and the first lateral face are spaced apart and tilted angularly relative to each other such that a distance between the third lateral face and the first lateral face decreases continuously across the prismatic basic shape from the top face to the base face of the prismatic basic shape.

2. The filter cartridge according to claim 1 , wherein
the seal is an axially acting seal, the sealing surface facing in a direction away from the outflow surface, the contact surface facing in the opposite direction.

3. The filter cartridge according to claim 1 , further comprising
a zigzag-shaped folded filter medium comprising folds.

4. The filter cartridge according to claim 3 , wherein
the folds comprise outer fold edges, positioned on the first lateral face, and further comprise
inner fold edges,
wherein the inner fold edges are positioned opposite the outer fold edges and are positioned on the third lateral face.

5. The filter cartridge according to claim 3 , wherein
the folds each have a depth and the depth of the folds differs among the folds that are neighboring each other.

6. The filter cartridge according to claim 3 , wherein
the depth of the folds at the second lateral face is different from the depth of the folds at the fourth lateral face.

7. The filter cartridge according to claim 3 , wherein
the depth of the folds changes continuously from the second lateral face toward the fourth lateral face.

8. The filter cartridge according to claim 3 , wherein
the folds comprise
a first end face and a second end face,
wherein the first end face of the folds is positioned on the base face and the second end face of the folds is positioned on the top face.

9. The filter cartridge according to claim 1 , further comprising:
a spacer structure configured to determine a spacing between the filter cartridge frame and a further downstream filter cartridge.

10. The filter cartridge according to claim 9 , wherein
the spacer structure is formed integrally with the seal.

11. The filter cartridge according to claim 1 , further comprising:
a filter body;
a filter cartridge frame supporting the filter body;
an edge protection disposed on the filter cartridge frame in the area of the inflow surface and circumferentially surrounding externally the filter body, wherein the edge protection connects the filter body and the filter cartridge frame detachably or non-detachably to each other.

12. A filter comprising a filter cartridge according to claim 1 ,
wherein a main inflow direction of the filter and a main outflow direction of the filter are positioned at an angle of more than 30° relative to each other.

13. The filter according to claim 12 , wherein
a main inflow direction of the filter is parallel and displaced relative to a main outflow direction of the filter.

14. A filter comprising
a main filter cartridge and
a secondary filter cartridge,
wherein at least one of the main filter cartridge and of the secondary filter cartridge is embodied according to claim 1 .

15. A filter comprising:
a filter housing comprising
a raw-side area and
a clean-side area;

a main filter cartridge according to claim 1 , wherein
the main filter cartridge is configured to be disposed in the filter housing,
wherein the main filter cartridge comprises
a main filter cartridge inflow surface,
a main filter cartridge outflow surface,
a main filter cartridge flow direction from the main filter cartridge inflow surface to the main filter cartridge outflow surface, and
a seal arranged on a sealing surface of the main filter cartridge and configured to fluid-tightly separate the raw-side area and the clean-side area of the filter housing from each other when the main filter cartridge is arranged in the filter housing;

a secondary filter cartridge arranged downstream of the main filter cartridge in the main filter cartridge flow direction,
wherein the secondary filter cartridge comprises
a secondary filter cartridge inflow surface,
a secondary filter cartridge outflow surface, and
a secondary filter cartridge flow direction from the secondary filter cartridge inflow surface to the secondary filter cartridge outflow surface;

wherein the sealing surface is arranged at a slant relative to the main filter cartridge flow direction of the main filter cartridge.

16. The filter according to claim 15 , wherein
the sealing surface and the main filter cartridge flow direction are positioned at an angle relative to each other that is between 80° and 10°.

17. The filter according to claim 15 , wherein
the sealing surface and the main filter cartridge outflow surface extend parallel to each other.

18. The filter according to claim 15 , wherein
the secondary filter cartridge inflow surface extends parallel and spaced apart at a spacing relative to the sealing surface.

19. The filter according to claim 18 , wherein
the spacing of the secondary filter cartridge inflow surface relative to the sealing surface is less than 2 cm.

20. The filter according to claim 15 , wherein
the secondary filter cartridge has a basic shape of a parallelepiped.

21. The filter according to claim 15 , wherein
the main filter cartridge has a basic shape of a prism with a base face shaped as a quadrangle and a top face shaped as a quadrangle.

22. The filter according to claim 15 , wherein
the main filter element comprises a folded bellows with at least two different fold depths.

23. The filter according to claim 15 , wherein
the filter housing comprises
an inflow direction,
an outflow direction,
an outflow area with an outflow opening, and
an outflow socket configured to be attached to the outflow area,
wherein the outflow area comprises
a fastening surface for the outflow socket, and
wherein the fastening surface is positioned at an angle of 45° relative to the main filter cartridge flow direction.

24. The filter according to claim 23 , wherein
the outflow socket is formed such that a deflection of a flow directio

Assignees

• Mann & Hummel Gmbh

Inventors

• Kaufmann Michael
• Ruhland Klaus-Dieter

Classifications

• F02M35/02416 Primary

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

• B01D45/16

  generated by the winding course of the gas stream {, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes} · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D46/10

  Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces · CPC title

• B01D46/4227

  Manipulating filters or filter elements, e.g. handles or extracting tools · CPC title