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US 6,290,739 B1Granted
Aerosol separator; and method
AssigneeDonaldson Company, Inc.
InventorsSteven Scott Gieseke, Robert Allen Dushek, Carolyn J. Finnerty
Life of this patent
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Abstract
An arrangement for separating a hydrophobic liquid phase from a gaseous stream includes a coalescer filter, a housing, a gas flow direction arrangement, and a liquid collection arrangement. The coalescer filter includes a non-woven media of fibers. The housing includes an interior having a gas flow inlet and a gas flow outlet. The liquid collection arrangement is positioned within the housing construction and is oriented for receiving liquid collected from the coalescer filter and drained therefrom.
Claims10
A filter element comprising:
- (a) a first filter media comprising a tubular extension of pleated media defining an open filter interior;
- (b) a first end cap at one end of said tubular extension of pleated media;
- (i) said first end cap having an aperture in communication with said open filter interior;
- (ii) said first end cap having an annular surface comprising a polymeric material positioned to form a radial seal with a housing construction, when the filter element is operably positioned in a housing construction;
- (c) a second end cap at an end of said tubular extension of media opposite of said first end cap;
- (i) said second end cap having an aperture in communication with said open filter interior;
- (ii) said pleated media having a length extending between said first and second end caps;
- (d) a second filter media comprising a region of fibrous media oriented in said first end cap aperture;
- (i) said region of fibrous media including first and second, opposite flow faces;
- (A) said second flow face being oriented toward said open filter interior;
- (B) said first flow face being oriented away from said open filter interior;
- and
- (e) a flow construction oriented in said open filter interior;
- (i) said flow construction extending from said second flow face of said region of fibrous media in a direction toward said second end cap;
- (ii) said flow construction being generally gas impermeable and oriented to direct liquid coalesced by said region of fibrous media toward said second end cap aperture.
12 more elements
A method of treating diesel engine blow-by gases;
- the method comprising steps of:
- (a) directing blow-by gases from a diesel engine to a coalescer filter;
- the coalescer filter being mounted in an interior of a tubular pleated media filter;
- (b) removing at least a portion of a liquid phase from the gases with the coalescer filter as a collected liquid;
- (c) after said step of removing at least a portion of the collected liquid phase, directing drainage of at least a portion of the collected liquid from the coalescer filter, through an interior of a gas impermeable inner tube oriented within the interior of the tubular pleated media filter, to a drain construction;
- (d) after said step of removing at least a portion of a liquid phase, directing the gases through the interior of the gas impermeable inner tube, around an end of the inner tube, and to the tubular pleated media filter;
- and
- (e) filtering at least a portion of particulates from the gases with the pleated media filter.
5 more elements
Dependencies are inferred from the claim text.