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US 7,524,349 B2Granted
Air cleaner; air filter cartridge and method of manufacturing
AssigneeDonaldson Company, Inc.
InventorsKevin Schrage, Douglas Lee Iddings, James R. Scott
Life of this patent
Estimating the term…
Abstract
According to the present disclosure an air cleaner and air filter cartridge arrangement is provided. The air filter cartridge is a removable and replaceable cartridge for use in the air cleaner. The cartridge includes, among other things, an end cap having a preferred outwardly directed radial seal and a groove. The air cleaner includes a housing with a stabilizing ring projecting into an interior, positioned to project at least partially into the groove of the filter cartridge, when the filter cartridge is mounted for use. Methods of assembly and installation are described.
Claims27
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- and,
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface.
4 more elements
An air filter cartridge comprising:
- (a) a region of pleated filter media extending at an outside angle of at least 0.5°, around an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (B) a deepest portion of the groove is at least 1.5 mm deep in minim depth from a closest adjacent outer axial surface of the second end cap;
- and,
- (C) a region of filter media defining a greater perimeter adjacent the second end cap than adjacent the first end cap;
- and,
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- (i) the outer support including a radially outwardly directed dust shield thereon.
9 more elements
An air cleaner comprising:
- (a) a housing defining an interior and including an end outlet;
- (i) the housing including an end wall surrounding the end outlet;
- (ii) the housing including an annular housing seal surface surrounding the end wall;
- and
- (iii) the housing including a ring projecting into the interior of the housing from the end wall;
- (A) the ring being spaced from both the end outlet and the housing annular radial seal surface;
- and
- (b) an air filter cartridge removeably positioned within the housing interior;
- the filter cartridge comprising:
- (i) a region of filter media surrounding and defining an open central interior;
- and,
- (ii) first and second end caps;
- (A) the media extending between the first and second end caps;
- (B) the first end cap being closed to flow of air therethrough;
- (C) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal portion circumscribing an outer periphery of the second end cap;
- (1) the second end cap including a groove with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (iii) the air filter cartridge being positioned with:
- (A) the ring projecting into the interior of the housing from the end wall also projecting at least partly into the groove on the second end cap;
- and,
- (B) the housing radial seal portion of the end cap radially sealed to the annular housing seal surface of the housing.
17 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (B) a deepest portion of the groove being at least 1.5 mm deep in minimum depth from a closest adjacent outer axial surface of the second end cap;
- and,
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- (i) the second end cap being a molded-in-place end cap;
- and,
- (ii) the portion of the outer support surrounding the media and projecting into the second end cap being impermeable to flow theretbrough of a resin from which the second end cap is molded.
9 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- (i) the second end cap being a molded-in-place end cap;
- and,
- (ii) the portion of the outer support surrounding the media and projecting into the second end cap being impermeable to flow therethrough of a resin from which the second end cap is molded.
7 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (B) a deepest portion of the groove being at least 1.5 mm deep in minimum depth from a closest adjacent outer axial surface of the second end cap;
- and,
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- (i) a tip of the outer support projecting into the second end cap a distance of at least 0.2 mm and not more than 1.2 mm from a deepest portion of the groove;
- and,
- (ii) the outer support including a radially outwardly directed dust shield thereon;
- (A) the radially outwardly directed dust shield being positioned adjacent the second end cap.
10 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- and,
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- and,
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- (i) the outer support including a radially outwardly directed dust shield thereon;
- the radially outwardly directed dust shield being positioned adjacent the second end cap.
8 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (B) a deepest portion of the groove being at least 1.5 mm deep in minimum depth from a closest adjacent outer axial surface of the second end cap;
- and,
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- (i) the outer support including a portion surrounding the region of filter media and extending completely between the first and second end caps;
- and,
- (ii) the outer support including an air impermeable shield portion adjacent the second end cap and projecting toward the first end cap from a radial dust shield, a distance corresponding to at least 10% and not more than 40% of a distance between the first and second end caps.
9 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- (i) the outer support including an air impermeable shield portion adjacent the second end cap and projecting toward the first end cap from a radial dust shield, a distance corresponding to at least 10% and not more than 40% of a distance between the first and second end caps.
5 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circuimsciribing an outer periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (B) a deepest portion of the groove being at least 1.5 mm deep in minimum depth from a closest adjacent outer axial surface of the second end cap;
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- the outer support including:
- (i) an impermeable portion extending axially toward the first end cap from the second end cap a distance of at least 10% and not more than 30% of the distance between the end caps;
- (ii) a ring-shaped tip portion embedded within the second end cap defining a ring groove between inner and outer wall portions;
- and,
- (d) an outer liner positioned in extension between the first and second end caps, with an end portion positioned in the ring groove between the inner and outer wall portions.
10 more elements
An air filter cartridge comprising:
- (a) a region of filter media surrounding and defining an open central interior;
- (b) first and second end caps;
- (i) the media extending between the first and second end caps;
- (ii) the first end cap being closed to flow of air therethrough;
- (iii) the second end cap being an open end cap having an outer, annular, outwardly directed housing radial seal surface circumscribing an outer surface periphery of the second end cap;
- (A) the second end cap including a groove therein located with a deepest portion positioned radially no more than 3 mm from an adjacent outer edge of the media and no more than 15 mm from the outwardly directed housing radial seal surface;
- (c) an outer support having a portion surrounding the media and projecting into the second end cap;
- the outer support including:
- (i) an impermeable portion extending axially toward the first end cap from the second end cap a distance of at least 10% and not more than 30% of the distance between the end caps;
- (ii) a ring-shaped tip portion embedded within the second end cap defining a ring groove between inner and outer wall portions;
- and,
- (d) an outer liner positioned in extension between the first and second end caps, with an end portion positioned in the ring groove between the inner and outer wall portions.
9 more elements
Dependencies are inferred from the claim text.