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US 7,491,254 B2Granted
Filter elements; air cleaner; assembly; and, methods
AssigneeDonaldson Company, Inc.
InventorsWilliam Joseph Krisko, Wayne R. W. Bishop, Steven Scott Gieseke, Carolyn J. Finnerty, David W. Nelson
Life of this patent
Estimating the term…
Abstract
A filter element, a safety element and fluid cleaner assembly. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The element generally comprises z-filter media, arranged in a straight through configuration, and an axial seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Methods of assembly and use are provided.
Claims13
An air cleaner comprising:
- (a) a housing;
- (b) a primary filter element operably installed within the housing;
- the primary filter element including a media construction having an inlet flow face and an outlet flow face and comprising a first facing media sheet secured to a second media sheet and coiled to form a plurality of flutes extending between the inlet and outlet flow faces;
- (i) each of said flutes having an upstream portion adjacent to said inlet flow face and a downstream portion adjacent to said outlet flow face;
- (A) selected ones of said flutes being open at said upstream portion and closed at said downstream portion;
- and selected ones of said flutes being closed at said upstream portion and open at said downstream portion;
- (ii) the primary filter element having a cross-sectional configuration including a pair of spaced opposite curved ends;
- (iii) the primary filter element including an axial seal member extending completely peripherally around the media construction and axially sealed to a portion of the housing;
- (A) the seal member including first and second opposite sides and an outer annular surface;
- the first and second opposite sides of the seal member being compressed axially toward one another in sealing the primary filter element to the housing;
- and,
- (B) the seal member defining a shape having a cross-sectional configuration of spaced opposite curved ends;
- (c) a precleaner upstream of the primary filter element;
- the precleaner including multiple centrifugal separators and an ejection tube;
- and,
- (d) a safety element operably installed in the housing downstream of the primary filter element;
- (i) the safety element including:
- a frame;
- a gasket mounted around the frame;
- and, a region of pleated filter media within the frame, and,
- (ii) the safety element having a cross-sectional configuration including a pair of opposite curved ends joined by sides.
18 more elements
An air cleaner comprising:
- (a) a housing;
- (b) a primary filter element operably installed within the housing;
- the primary filter element including a filter media construction having an inlet flow face and an outlet flow face and comprising a first facing media sheet secured to a second media sheet and coiled to form a plurality of flutes extending between the inlet and outlet flow faces;
- (i) each of said flutes having an upstream portion adjacent to said inlet flow face and a downstream portion adjacent to said outlet flow face;
- (A) selected ones of said flutes being open at said upstream portion and closed at said downstream portion;
- and selected ones of said flutes being closed at said upstream portion and open at said downstream portion;
- (ii) the primary filter element having an oval cross-sectional configuration;
- (iii) the primary filter element including an axial seal member extending completely peripherally around the filter media construction and axially sealed to a portion of the housing;
- (A) the seal member including first and second opposite sides and an outer annular surface;
- the first and second opposite sides of the seal member being compressed axially toward one another in sealing the primary filter element to the housing;
- and,
- (B) the seal member defining a shape having a cross-sectional configuration of opposite curved ends joined by opposite sides;
- (c) a precleaner upstream of the primary filter element;
- the precleaner including multiple centrifugal separators and an ejection tube;
- (i) each of the separators having a sidewall, an interior volume, and vanes within the interior volume;
- and
- (d) a safety element operably installed in the housing downstream of the primary filter element;
- (i) the safety element including:
- a frame;
- a gasket;
- a region of pleated filter media within the frame;
- and a handle;
- (A) the gasket forming a seal with the housing.
20 more elements
Dependencies are inferred from the claim text.