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US 11,826,691 B2Granted
Pulse jet air cleaner systems; evacuation valve arrangements; air cleaner components; and, methods
AssigneeDonaldson Company, Inc.
InventorsFred Wahlquist, Thomas R. Olson, Jason DeGuelle
Life of this patent
Estimating the term…
Abstract
Assemblies, features, and techniques for pulse jet air cleaner assemblies and their operation are described. Techniques described include methodology and equipment for preferred pulse jet sequencing and operation.
Claims23
An air cleaner assembly comprising:
- (a) an air cleaner housing comprising a sidewall and an access cover, the air cleaner housing having an air flow inlet, an air flow outlet, and an interior,
- wherein:
- (i) the air cleaner housing includes an end closed by the access cover, and an end opposite the end closed by the access cover;
- and
- (ii) the air cleaner housing including a horizontal axis located at a mid point between a lower most portion of the sidewall and an upper most portion of the sidewall;
- (b) the access cover constructed for providing access to the interior;
- (c) a dust evacuator comprising:
- (i) a dust egress aperture arrangement in the sidewall;
- (ii) a dust evacuator valve member;
- and
- (iii) wherein the dust egress aperture arrangement includes no portion thereof below the horizontal axis;
- (d) a filter cartridge positioned in a sealing relationship with the air cleaner housing, the filter cartridge comprising:
- (i) filter media positioned around an open filter interior and extending from a first end cap to a second end cap;
- (ii) a seal member for sealing the filter cartridge to the air cleaner housing;
- and
- (iii) wherein the first end cap and the second end cap each include an opening extending therethrough;
- (e) a surround structure for distributing an air pulse to the open filter interior, wherein the surround structure extends through the first end cap and into the open filter interior at least 35% of an axial length of the air filter cartridge between the first end cap and the second end cap, wherein at least a portion of the surround structure is conical;
- and
- (f) a pulse jet distribution arrangement configured to selectively direct pulses of air into the open filter interior via the surround structure, wherein the pulse jet distribution arrangement includes a pulse jet flow tube configuration to direct a pulse flow of gas into the open filter interior;
- and
- (i) the pulse jet flow tube is positioned to direct the pulses of air through the first end cap.
18 more elements
An air cleaner assembly comprising:
- (a) an air cleaner housing comprising a sidewall and an access cover, the air cleaner housing having an air flow inlet, an air flow outlet, and an interior,
- wherein:
- (i) the air cleaner housing includes an end closed by the access cover, and an end opposite the end closed by the access cover;
- and
- (ii) the air cleaner housing including a horizontal axis located at a mid point between a lower most portion of the sidewall and an upper most portion of the sidewall;
- (b) the access cover constructed for providing access to the interior;
- (c) a dust evacuator arrangement comprising:
- (i) a dust egress aperture arrangement in the sidewall;
- (ii) a dust evacuator valve member;
- and
- (iii) wherein the dust egress aperture arrangement includes no portion thereof below the horizontal axis;
- (d) a filter cartridge positioned in a sealing relationship with the air cleaner housing, the filter cartridge comprising:
- (i) pleated filter media positioned around an open filter interior and extending from a first end cap to a second end cap;
- (ii) an axially directed seal member located on the first end cap and for sealing the filter cartridge to the air cleaner housing;
- and
- (iii) wherein the first end cap and the second end cap each include an opening extending therethrough;
- (e) a surround structure for distributing an air pulse to the open filter interior, wherein the surround structure extends through the first end cap and into the open filter interior at least 35% of an axial length of the air filter cartridge between the first end cap and the second end cap;
- wherein at least a portion of the surround structure is conical:
- and
- (f) a pulse jet distribution arrangement configured to selectively direct pulses of air into the open filter interior via the surround structure, wherein the pulse jet distribution arrangement comprises a pulse jet flow tube configured to direct a pulse flow of gas into the open filter interior;
- and
- (i) the pulse jet flow tube is positioned to direct the pulses of air through the first end cap.
19 more elements
Dependencies are inferred from the claim text.