Filter device

Patent metadata

Field	Value
Publication number	US-11648491-B2
Application number	US-202017070388-A
Country	US
Kind code	B2
Filing date	Oct 14, 2020
Priority date	Oct 15, 2019
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

A filter device is disclosed. The filter device includes a coalesce and a final separator arranged one after another in a flow direction. The final separator includes final separator material and is arranged radially within the coalesce. The coalesce is configured hollow-cylindrical and includes a coalescer material and an external support structure with an upper coalescer ring and a lower coalescer ring that are connected with one another via axial coalescer ribs. A positioning element is provided on the final separator. A positioning opening is provided in a region of the at least one lower coalescer ring. The positioning opening is configured in a complementary manner to the positioning element and the final separator engages into the positioning opening in a mounted state with the positioning element and thereby aligns the final separator relative to the coalesce.

First claim

The invention claimed is:

1. A filter device, comprising:
a coalescer and a final separator with a final separator material arranged one after another in a flow direction, wherein the final separator is arranged radially within the coalescer,
the coalescer configured hollow-cylindrical and includes a coalescer material and an external support structure with at least one upper coalescer ring and at least one lower coalescer ring that are connected with one another via axial coalescer ribs arranged on an outer diameter of the coalescer material and defining axially extending openings disposed circumferentially between two adjacent axial coalescer ribs,
a positioning element provided on the final separator,
wherein, in a region of the at least one lower coalescer ring, a positioning opening is provided that is configured in a complementary manner to the positioning element and into which the final separator engages in a mounted state with the positioning element and thereby aligns the final separator relative to the coalescer.

2. The filter device according to claim 1 , wherein the final separator is configured angular in cross-section and the final separator material is tensioned flat between respectively two adjacent final separator ribs.

3. The filter device according to claim 2 , wherein the coalescer is configured round in cross-section, wherein at least one of the two final separator ribs lies in a circumferential direction between two of the coalescer ribs and thereby provides a supporting of the coalescer material.

4. The filter device according to claim 1 , further comprising an insertion funnel for the final separator, projecting axially inwards into an interior of the final separator, and arranged at the at least one lower coalescer ring of the coalescer.

5. The filter device according to claim 4 , wherein the insertion funnel has a plurality of spokes running obliquely to a filter axis, the plurality of spokes attached at least partially at one end to the at least one lower coalescer ring and at the other end connected with one another via an inner ring.

6. The filter device according to claim 5 , wherein the external support structure and the insertion funnel together with the plurality of spokes and the inner ring are formed as a plastic injection moulded part.

7. The filter device according to claim 5 , wherein a respective spoke of the plurality of spokes disposed in a region of the positioning opening is not connected with the at least one lower coalescer ring, but rather is connected with two adjacent spokes of the plurality of spokes via a circle segment arc.

8. The filter device according to claim 7 , wherein the positioning opening is provided between the at least one lower coalescer ring and the circle segment arc.

9. The filter device according to claim 2 , wherein the two final separator ribs are arranged on an outer diameter of the final separator and have at their lower end in an installation state a chamfer that is formed in a complementary manner to a plurality of spokes of an insertion funnel arranged on the at least one lower coalescer ring, such that the final separator in the installed state rests with the chamfers against the two final separator ribs on the plurality of spokes.

10. The filter device according to claim 1 , wherein the final separator has on an upper final separator ring in an installed state an outwardly open and circumferential vent groove with a vent opening, wherein the vent opening in the installed state lies above the final separator material with respect to a horizontal.

11. The filter device according to claim 1 , wherein the positioning opening is provided on the at least one lower coalescer ring.

12. The filter device according to claim 1 , wherein the positioning element comprises a positioning blade.

13. A filter device, comprising:
a coalescer and a final separator arranged one after another in a flow direction, wherein the final separator has a final separator material and is arranged radially within the coalescer;
the coalescer configured hollow-cylindrical and includes a coalescer material and an external support structure with an upper coalescer ring and a lower coalescer ring that are connected with one another via axial coalescer ribs;
an insertion funnel for the final separator arranged at the lower coalescer ring of the coalescer and projecting axially inwards into an interior of the final separator;
a positioning element provided on the final separator;
wherein a positioning opening is provided on the lower coalescer ring in a complementary manner to the positioning element, and wherein the final separator engages with the positioning element into the positioning opening in a mounted state and thereby aligns the final separator relative to the coalescer.

14. The filter device according to claim 13 , wherein the final separator is angular in cross-section and the final separator material is tensioned flat between final separator ribs.

15. The filter device according to claim 14 , wherein the coalescer is round in cross-section, and wherein at least one of the final separator ribs lies in a circumferential direction between two of the coalescer ribs to facilitate supporting the coaleser material.

16. The filter device according to claim 13 , wherein the insertion funnel has a plurality of spokes running obliquely to filter axis that permit a through-flow of fluid radially through the insertion funnel, wherein the plurality of spokes are attached at least partially at one end to the lower coalescer ring and at the other end are connected with one another via an inner ring disposed in the interior of the final separator axially inwards of the lower coalescer ring.

17. The filter device according to claim 16 , wherein a respective one of the plurality of spokes in a region of the positioning opening is not connected with the lower coalescer ring, but is rather connected with two adjacent spokes of the plurality of spokes via a circular segment arc.

18. The filter device according to claim 17 , wherein the positioning opening is provided between the lower coalescer ring and the circle segment arc.

19. The filter device according to claim 13 , wherein the final separator has an outwardly open and circumferential vent groove on an upper final separator ring in an installed state, wherein the vent groove has a vent opening that lies above the final separator material with respect to a horizontal in the installed state.

20. A filter device, comprising:
a coalescer and a final separator arranged one after another in a flow direction with the final separator arranged radially within the coalescer, the final separator includes a final separator material and a plurality of final separator ribs;
the coalescer configured hollow-cylindrical and includes a coalescer material and an external support structure with at least one upper coalescer ring and at least one lower coalescer ring that are connected with one another via axial coalescer ribs;
an insertion funnel arranged on the at least one lower coalescer ring and including a plurality of spokes running obliquely to a filter axis;
a positioning element provided on the final separator;
wherein, in a region of the at least one lower coalescer ring, a positioning opening is provided that is configured in a complementary manner to the positioning element and into which the final separator engages in a mounted state with the positioning element and thereby aligns the final separator relative to the coalescer;
wherein t

Assignees

• Mahle Int Gmbh

Inventors

• Hensinger Heiko
• Koppi Peter
• Kraut Maria

Classifications

• B01D36/003 Primary

  Filters in combination with devices for the removal of liquids (B01D35/185 takes precedence) · CPC title

• B01D17/045 Primary

  with coalescers · CPC title

• B01D2201/0423

  not in the inner side of the cylindrical filtering elements · CPC title

• B01D36/001

  Filters in combination with devices for the removal of gas, air purge systems · CPC title

• B01D29/58

  arranged concentrically or coaxially · CPC title