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US 2026/0084083 A1Published application
Filters and filter assemblies with canted openings, collectors and methods of use
AssigneeDonaldson Company, Inc.
InventorsStephan A. Graham, Massimo Movia, Iman Vezvaei, David V. Gutman, Eric W. E. Collin, Steven A. Johnson, Benny J. B. Mombaerts, David L. Van Eylen
Life of this patent
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Abstract
Filters having canted openings, filter assemblies including the filters, filter supports, collectors, collectors with reduced profile clean air chambers, and methods of using the same are described herein.
Claims21
A collector for removing particulate matter from gas, the collector comprising:
- a tubesheet comprising a clean face and a dirty face;
- a housing operably attached to the tubesheet, wherein the housing defines a clean air volume bounded in part by the tubesheet, wherein the clean face of the tubesheet faces the clean air volume;
- a plurality of apertures formed through the tubesheet, wherein each aperture of the plurality of apertures comprises an elongated aperture comprising a length extending along an aperture axis that is greater a width of the aperture measured in a direction transverse to the aperture axis, wherein, for each aperture of the plurality of apertures,
- a pulse apparatus located in the clean air volume, the pulse apparatus configured to deliver pulsed gas through the plurality of apertures in the tubesheet, wherein the pulse apparatus defines a central pulse axis extending through each aperture of the plurality of apertures in the tubesheet, and wherein a distance between the clean face of the tubesheet surrounding each aperture and a reference plane oriented transverse to the central pulse axis passing through the aperture changes when moving along the aperture axis;
- and
- a filter positioned in each aperture of the plurality of apertures, wherein each filter comprises a filter body attached to a filter seal:
- wherein the filter body comprises an envelope-shaped filter body that comprises filter media defining an interior volume within the filter, the filter body comprising an open end and a closed end, the filter body extending along a filter axis that extends between the open end and the closed end of the filter body, the filter body defining a first major side and a second major side, wherein the first major side and the second major side are defined by the closed end and the open end of the filter body when moving along the filter axis and wherein the first major side and the second major side are further defined by a first edge and a second edge when moving along the filter axis between the open end and the closed end, the first edge and the second edge extending from the closed end to the open end of the filter body;
- wherein the filter seal is positioned around a perimeter of the open end of the filter body and compressed against the clean face of the tubesheet to form a seal with the clean face of the tubesheet when the filter is installed in a selected aperture of the plurality of apertures such that gas passing into the interior volume must pass through the filter media or through the filter opening;
- wherein, for each aperture of the plurality of apertures, the aperture axis and the reference plane oriented transverse to the central pulse axis passing through the aperture form an included angle of 5 degrees or more.
6 more elements
A filter comprising a filter body attached to a filter seal:
- wherein the filter body comprises an envelope-shaped filter body that comprises filter media defining an interior volume within the filter, the filter body comprising an open end and a closed end, the filter body extending along a filter axis that extends between the open end and the closed end of the filter body, the filter body defining a first major side and a second major side, wherein the first major side and the second major side are defined by the closed end and the open end of the filter body when moving along the filter axis and wherein the first major side and the second major side are further defined by a first edge and a second edge when moving along the filter axis between the open end and the closed end, the first edge and the second edge extending from the closed end to the open end of the filter body, wherein the filter body comprises pleated filter media comprising pleats extending along the filter body from the filter seal to the closed end or a plurality of filter tubes;
- wherein the filter seal is positioned around a perimeter of the open end of the filter body and configured to form a seal with a seal surface when the filter is installed in an aperture of a tubesheet such that gas passing into the interior volume must pass through the filter media or through the filter opening;
- and wherein the first edge of the filter body is shorter than the second edge of the filter body.
A filter comprising a filter body attached to a filter seal:
- wherein the filter body comprises an envelope-shaped filter body that comprises filter media defining an interior volume within the filter, the filter body comprising an open end and a closed end, the filter body extending along a filter axis that extends between the open end and the closed end of the filter body, the filter body defining a first major side and a second major side, wherein the first major side and the second major side are defined by the closed end and the open end of the filter body when moving along the filter axis and wherein the first major side and the second major side are further defined by a first edge and a second edge when moving along the filter axis between the open end and the closed end, the first edge and the second edge extending from the closed end to the open end of the filter body, wherein the filter body comprises pleated filter media comprising pleats extending along the filter body from the filter seal to the closed end or a plurality of filter tubes;
- wherein the filter seal is positioned around a perimeter of the open end of the filter body and configured to form a seal with a seal surface when the filter is installed in an aperture of a tubesheet such that gas passing into the interior volume must pass through the filter media or through the filter opening;
- wherein the filter seal comprises an elongate shape comprising a seal length measured along a seal axis extending between a first end of the filter seal proximate the first edge of the filter body and a second end of the filter seal proximate the second edge of the filter body,
- wherein the seal length is greater than a filter body height measured between the first edge and the second edge along the filter height axis;
- and wherein the seal axis forms an included angle with the filter axis of less than 90 degrees.
2 more elements
Dependencies are inferred from the claim text.