Aerosol separator assembly; components; and, methods

Patent metadata

Field	Value
Publication number	US-9737839-B2
Application number	US-201414273801-A
Country	US
Kind code	B2
Filing date	May 9, 2014
Priority date	Mar 20, 2007
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A filter cartridge for use in separating a hydrophobic liquid aerosol phase from a gas stream, as a crankcase ventilation filter for example, is described. The cartridge includes a media pack comprising filtration media surrounding an open interior and a first end piece. Various structure included on the first end piece is described. An example is a D-shaped projection. Also described is an assembly including the filter cartridge, specific features of a housing component of the assembly. Methods of assembly and use are also described.

First claim

What is claimed is:

1. A filter cartridge for use in separating a hydrophobic liquid aerosol phase from a gas stream and for use in filtering the gas stream; the filter cartridge comprising:
(a) a media pack comprising filtration media surrounding an open interior and including first and second, opposite, ends;
(b) a first end piece adjacent the first end of the media pack; the first end piece having a first, outer, end surface on an opposite side of the first end piece from the media pack;
(i) the first end piece including a perimeter housing seal arrangement thereon; the perimeter housing seal arrangement comprising a seal member configured to form a releasable seal with a housing, when the filter cartridge is installed in a housing, for use;
(ii) the first end piece including a central flow aperture arrangement projecting therethrough in communication with the open interior of the media pack;
(iii) the first end piece including a rigid peripheral rim projection non-removably positioned thereon and extending in a direction away from the media pack; and,
(iv) the first end piece having a recessed surface portion extending between the peripheral rim projection and the central flow aperture arrangement; and,
(v) the first end piece including a non-circular projection positioned around the central flow aperture arrangement and projecting from the first end piece in a direction opposite the media pack;
(A) the non-circular projection being non-threaded and positioned spaced from the peripheral rim projection by the recessed surface portion;
(B) the non-circular projection extending to a tip located remote from the recessed surface portion and having a shape with a first straight portion and an opposite curved portion;
(C) the non-circular projection having a drain gap arrangement therethrough allowing fluid on the recessed surface portion to flow to the central flow aperture arrangement by passage through the non-circular projection; and,
(D) the cartridge having no threaded mount portion thereon.

2. A filter cartridge according to claim 1 wherein:
(a) the first end piece includes a first member of a cartridge-to-housing rotational alignment indexing arrangement including at least a first radial projection.

3. A filter cartridge according to claim 2 wherein:
(a) the first member of a cartridge-to-housing rotational alignment indexing arrangement comprises the first radial projection spaced from a first locator shoulder to define a first locator receiver gap therebetween.

4. A filter cartridge according to claim 3 wherein:
(a) the first member of a cartridge-to-housing rotational alignment indexing arrangement includes a second radial projection spaced from a second location shoulder to define a second locator receiver gap therebetween.

5. A filter cartridge according to claim 1 including:
(a) a handle member positioned on the first end piece and projecting in a direction away from the media pack;
(i) the handle member being a non-collapsible projection and including a handle bridge section forming a handle opening thereunder between the handle bridge section and an adjacent portion of the first end piece.

6. A filter cartridge according to claim 5 wherein:
(a) the handle member comprises a perimeter handle member positioned adjacent the outer perimeter of the first end piece.

7. A filter cartridge according to claim 1 wherein:
(a) the second end piece includes: a closed central portion overlapping, and closing, an end of the open interior of the media pack.

8. A filter cartridge according to claim 7 wherein:
(a) the second end piece includes an outer perimeter section comprising a plurality of spaced projections and a plurality of drain regions between the spaced projections; each drain region being, at least in part, in direct drain overlap with an end of the filtration media in the media pack at a location adjacent the second end piece.

9. A filter cartridge according to claim 1 wherein:
(a) the second end piece includes an outer perimeter section comprising a plurality of spaced projections and a plurality of drain regions between the spaced projections; each drain region being, at least in part, in direct drain overlap with an end of the filtration media in the media pack at a location adjacent the second end piece.

10. A filter cartridge according to claim 1 wherein:
(a) the perimeter housing seal comprises an o-ring.

11. A filter cartridge according to claim 1 wherein:
(a) the first end piece includes a first member of a cartridge-to-housing rotational alignment indexing arrangement comprising a first radial projection spaced from a first locator shoulder to define a first locator receiver gap therebetween;
(i) the first member of a cartridge-to-housing rotational alignment indexing arrangement also including a second radial projection spaced from a second locator shoulder to define a second locator receiving gap therebetween;
(A) the first and second locator gaps being radially spaced, on center, a smallest radial amount of less than 180°.

12. A filter cartridge according to claim 1 wherein:
(a) the second end piece and the first end piece are positioned at opposite ends of a central, tubular, media support extending through the open interior of the media pack.

13. A filter cartridge according to claim 12 wherein:
(a) the first end piece, second end piece and tubular media support are portions on a single, integral, molded, support piece.

14. A crankcase ventilation filter assembly comprising:
(a) housing defining an interior and including a housing base and a removable access cover;
(i) the housing defining a gas flow inlet, a gas flow outlet and a liquid drain outlet; and,
(ii) the housing base including a first member of a cartridge-to-housing base rotational alignment indexing arrangement thereon; and,

(b) a filter cartridge for use in separating a hydrophobic liquid aerosol phase from a gas stream and for use in filtering the gas stream; the filter cartridge comprising:
(a) a media pack comprising filtration media surrounding an open interior and including first and second, opposite, ends;
(b) a first end piece adjacent the first end of the media pack; the first end piece having a first, outer, end surface on an opposite side of the first end piece from the media pack;
(i) the first end piece including a perimeter housing seal arrangement thereon; the perimeter housing seal arrangement comprising a seal member forming a releasable seal with the housing;
(ii) the first end piece including a central flow aperture arrangement projecting therethrough in communication with the open interior of the media pack;
(iii) the first end piece including a rigid peripheral rim projection non-removably positioned thereon and extending in a direction away from the media pack; and,
(iv) the first end piece including a recessed surface portion extending between the peripheral rim projection and the central flow aperture arrangement;
(iv) the first end piece having a recessed surface portion extending between the peripheral rim projection and the central flow aperture arrangement; and,
(v) the first end piece including a non-circular projection positioned around the central flow aperture arrangement and projecting from the first end piece in a direction opposite the media pack;
(A) the non-circular projection being non-threaded and positioned spaced from the peripheral rim projection by the recessed surface portion;
(B) the non-circular projection extending to a tip located remote from the recessed surface portion and having a shape with a first straight portion and an opp

Assignees

• Donaldson Co Inc

Inventors

• Lundgren Thomas John
• Hemish Bradley
• Adamek Daniel
• Mosset Wade

Classifications

• B01D46/0087

  Bypass or safety valves · CPC title

• B01D46/0031

  with collecting, draining means · CPC title

• B01D46/009

  Identification of filter type or position thereof, e.g. by transponders or bar codes · CPC title

• B01D46/0005

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

• F01M13/04

  having means for purifying air before leaving crankcase, e.g. removing oil · CPC title