US 8,617,276 B2Granted

Filter cartridge, dust collectors, and methods

AssigneeDonaldson Company, Inc.

InventorsThomas Donald Raether, Eli Ross, Rodney Slade Switzer, Gary Richard Nygaard

Life of this patent

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Abstract

An air filter cartridge has Z-media and a gasket arrangement with a perimeter gasket member against the downstream flow face and a side gasket member adjacent to at least a partial extension of a first side panel. The side gasket member includes no portion against second, third, and fourth side panels of the air filter cartridge. The air filter cartridge can be used in a dust collector having a tubesheet and a frame arrangement extending from the tubesheet. The perimeter gasket member seals against the frame arrangement and the side gasket member seals against the tubesheet. A method of servicing includes orienting the air filter cartridge against a guide ramp and moving the filter cartridge until the side gasket member is engaged against the tubesheet sealing surface.

Claims26

Dependent claims

A dust collector comprising:

(a) a housing having a dirty air inlet, a clean air outlet, a tubesheet, and a frame arrangement that is part of the housing;
(i) the tubesheet separating the housing between an unfiltered air plenum and a filtered air plenum;
the tubesheet having a plurality of apertures therethrough;
the tubesheet having a sealing surface;
(ii) the frame arrangement extending from the tubesheet;
and
(b) a first air filter cartridge removably oriented in the housing;
the first air filter cartridge including a media pack having upstream and downstream opposite flow faces, and first and second opposite sides extending between the upstream and downstream opposite flow faces;
(ii) a first side panel against the first side of the media pack;
(iii) a gasket arrangement including:
(A) a perimeter gasket member against the downstream flow face and around a perimeter of the downstream flow face;
the perimeter gasket member being compressed against the frame arrangement;
and
(B) a side gasket member, integral with the perimeter gasket member, and adjacent to at least a partial extension of the first side panel;
the side gasket member being compressed against the tubesheet sealing surface.

12 more elements

A dust collector comprising:

(a) a housing having a dirty air inlet, a clean air outlet, a tubesheet, and a frame arrangement;
(i) the tubesheet separating the housing between an unfiltered air plenum and a filtered air plenum;
the tubesheet having a plurality of apertures therethrough;
the tubesheet having a sealing surface;
(ii) the frame arrangement extending from the tubesheet;
the frame arrangement including a plurality of trays;
at least some of the trays having a planar sealing surface;
(iii) the frame arrangement including a bar spaced from the tubesheet and attached to the trays;
the bar having a planar sealing surface;
(b) a first air filter cartridge including a media pack having upstream and downstream opposite flow faces, and first and second opposite sides extending between the upstream and downstream opposite flow faces, third and fourth opposite sides extending between the upstream and downstream opposite flow faces;
and a stack of strips of single facer filter media material, each strip including a fluted media sheet secured to a facing media sheet and oriented with flutes of each fluted sheet extending in a direction between the upstream and downstream flow faces;
(i) a first side panel against the first side of the media pack;
a second side panel against the second side of the media pack;
a third side panel against the third side of the media pack;
and a fourth side panel against the fourth side of the media pack;
(ii) a gasket arrangement including:
(A) a perimeter gasket member against the downstream flow face and around a perimeter of the downstream flow face;
the perimeter gasket member being compressed against the planar sealing surface of the trays and the bar to form a seal;
(B) a side gasket member, integral with the perimeter gasket member, and adjacent to at least a partial extension of the first side panel;
the side gasket member being compressed against the tubesheet sealing surface;
and
(c) a second air filter cartridge including a second media pack having upstream and downstream opposite flow faces, first and second opposite sides extending between the upstream and downstream opposite flow faces, and third and fourth opposite sides extending between the upstream and downstream opposite flow faces;
(i) the second media pack comprising a stack of strips of single facer filter media material, each strip in the second media pack including a fluted media sheet secured to a facing media sheet and oriented with flutes of each fluted sheet extending in a direction between the upstream and downstream flow faces;
(ii) the second air filter cartridge having a first side panel secured to the first side of the second media pack;
(iii) the second air filter cartridge including a second gasket arrangement including:
(A) a second perimeter gasket member against the downstream flow face of the second media pack and around a perimeter of the downstream flow face of the second media pack;
(B) a second side gasket member, integral with the second perimeter gasket member, and adjacent to at least a partial extension of the first side panel of the second air filter cartridge;
(iv) the second air filter cartridge downstream flow face being spaced from and opposing the downstream flow face of the first air filter cartridge;
(v) the second air filter cartridge second perimeter gasket member forming a seal against the planar sealing surface of the trays;
and
(vi) the second air filter cartridge second side gasket member forming a seal against the tubesheet sealing surface;
wherein the bar is between the first air filter cartridge and the second air filter cartridge.

29 more elements

A dust collector comprising:

(a) a housing having a dirty air inlet, a clean air outlet, a tubesheet, and a frame arrangement;
(i) the tubesheet separating the housing between an unfiltered air plenum and a filtered air plenum;
the tubesheet having a plurality of apertures therethrough;
the tubesheet having a sealing surface;
(ii) the frame arrangement extending from the tubesheet;
(b) a first air filter cartridge including a media pack having upstream and downstream opposite flow faces, and first and second opposite sides extending between the upstream and downstream opposite flow faces;
(ii) a first side panel against the first side of the media pack;
(iii) a gasket arrangement including:
(A) a perimeter gasket member against the downstream flow face and around a perimeter of the downstream flow face;
the perimeter gasket member being compressed against the frame arrangement;
and
(B) a side gasket member, integral with the perimeter gasket member, and adjacent to at least a partial extension of the first side panel;
the side gasket member being compressed against the tubesheet sealing surface;
and
wherein the frame arrangement includes,
(i) a plurality of trays;
at least some of the trays having a planar sealing surface forming a seal with the perimeter gasket member;
and
(ii) a bar spaced from the tubesheet and attached to the trays;
the bar having a planar sealing surface forming a seal with the perimeter gasket member.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/901,792Filed 11 Oct 2010 · us provisional application
Priority: 14 Oct 2009
Published: US 2011/0083408 A114 Apr 2011
Granted: 31 Dec 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

B01D 46/0005
Casings; Housings; Frame constructions: mounting of filtering elements within casings, housings or frames
B01D 46/121
In multiple arrangements: v-type arrangements
B01D 46/42
Filters or filtering processes specially modified for separating dispersed particles from gases or vapours: auxiliary equipment or operation thereof
B01D 46/4227
Auxiliary equipment or operation thereof: manipulating filters or filter elements, e.g. handles or extracting tools

Family

Application61/251,493Us provisional application · filed 14 Oct 2009
Application61/334,665Us provisional application · filed 14 May 2010
Application61/360,659Us provisional application · filed 1 Jul 2010
US 2011/0083408 A1Pre-grant publication · published 14 Apr 2011
US 8,617,276 B2This patent

From the US filing history. Foreign family members aren’t listed.