Air cleaner; aerosol separator; and method
AssigneeDonaldson Company, Inc.
InventorsSteven Scott Gieseke, Robert Allen Dushek
Life of this patent
Estimating the term…
Abstract
A filter arrangement includes a tubular first filter element having a first media pack defining a first open filter interior and an air flow outlet. The air flow outlet is in gas flow communication with the first open filter interior. A housing construction has a gas flow inlet and a gas flow outlet. The air flow outlet of the first filter element is in gas flow communication with the gas flow outlet. A coalescer filter element is oriented in the housing construction in fluid communication with the gas flow inlet. A tubular second filter element is oriented in the housing construction and has a second media pack defining a second open filter interior. The second open filter interior is in gas flow communication with the gas flow outlet.
Claims20
A filter arrangement comprising:
- (a) a tubular first filter element having a first media pack defining a first open filter interior and an air flow outlet;
- (i) said air flow outlet being in gas flow communication with said first open filter interior;
- (b) a housing construction having a gas flow inlet and a gas flow outlet;
- (i) said air flow outlet of said first filter element being in gas flow communication with said gas flow outlet;
- (c) a coalescer filter element oriented in said housing construction in fluid communication with said gas flow inlet;
- and
- (d) a tubular second filter element oriented in said housing construction having a second media pack defining a second open filter interior;
- (i) said second open filter interior being in gas flow communication with said gas flow outlet;
- (ii) said second filter element being laterally spaced from said first filter element.
A system comprising:
- (a) an engine having an air intake duct, and a crankcase with a blow-by vent;
- (b) a first filter element in gas-flow communication with said air intake duct;
- (i) said first filter element constructed and arranged to remove particulates from an air intake stream flowing into said air intake duct;
- (c) a blow-by recovery system including:
- (i) a housing construction;
- (ii) a coalescer filter oriented in said housing construction in fluid communication with said blow-by vent;
- (A) said coalescer filter constructed and arranged to separate a liquid phase from liquid entrained gases exiting said blow-by vent;
- (iii) a second filter element oriented in said housing construction downstream of said coalescer filter;
- (A) said second filter element constructed and arranged to remove particulates from gases received from said coalescer filter and flowing into said air intake duct;
- (B) said second filter element being laterally spaced from said first filter element;
- (d) a liquid collection arrangement oriented for receiving liquid collected by said coalescer filter;
- and
- (e) a sealing system constructed and arranged to create a first seal between said first filter element and said second filter element.
A filter element arrangement comprising:
- (a) a first end cap;
- (b) a second end cap at an end of the filter element arrangement opposite of the first end cap;
- (c) a media pack extending between said first and second end caps;
- (i) said media pack arranged in a tubular configuration and defining an open filter interior;
- (d) a centering construction including:
- (i) a tubular neck defining an opening in communication with said open filter interior;
- said tubular neck projecting from the filter element arrangement in a direction away from said media pack;
- (ii) a lip member circumscribing said tubular neck;
- said lip member projecting from the filter element arrangement in a direction away from said media pack;
- and
- (iii) an extension being between said tubular neck and said lip member.
Dependencies are inferred from the claim text.