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US 7,282,075 B2Granted
Z-filter media with reverse-flow cleaning systems and methods
AssigneeDonaldson Company, Inc.
InventorsTimothy D. Sporre, Jim C. Rothman, Michael W. Handley, Thomas D. Raether
Life of this patent
Estimating the term…
Abstract
A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such methods include elements made of Z-media. An example system utilizing the method includes a gas turbine air intake system.
Claims19
A method comprising:
- (a) providing a media construction;
- the media construction being made from a flexible, permeable material and having opposite first and second ends and a plurality of flutes;
- (i) each of the flutes having a first end portion adjacent to the media construction first end, and a second end portion adjacent to the media construction second end;
- (A) selected ones of the flutes being open at the first end portion and closed at the second end portion;
- and selected ones of the flutes being closed at the first end portion and open at the second end portion to result in an upstream flow face and a downstream flow face;
- (b) cleaning the media construction by pulsing pressurized fluid into the media construction through the downstream flow face;
- and
- (i) the pressurized fluid turning at an angle of less than 80° to flow into the downstream flow face.
5 more elements
A filter element comprising:
- (a) a first media construction;
- the first media construction having opposite first and second ends and a plurality of flutes;
- (i) each of the flutes having a first end portion adjacent to the media construction first end, and a second end portion adjacent to the media construction second end;
- (A) selected ones of the flutes being open at the first end portion and closed at the second end portion;
- and selected ones of the flutes being closed at the first end portion and open at the second end portion to result in a first media construction upstream flow face and a first media construction downstream flow face;
- (ii) the first media construction forming a non-rectangular parallelogram;
- p1 (b) a second media construction;
- the second media construction having opposite first and second ends and a plurality of flutes;
- (i) each of the second media construction flutes having a first end portion adjacent to the second media construction first end, and a second end portion adjacent to the second media construction second end;
- (A) selected ones of the second media construction flutes being open at the second media construction first end portion and closed at the second media construction second end portion;
- and selected ones of the flutes being closed at the second media construction first end portion and open at the second media construction second end portion to result in a second media construction upstream flow face and a second media construction downstream flow face;
- (ii) the second media construction forming a non-rectangular parallelogram;
- (c) said first media construction and said second media construction being secured together;
- (i) said first media construction downstream flow face opposing said second media construction downstream flow face;
- said first media construction non-rectangular parallelogram and said second media construction non-rectangular parallelogram being angled relative to each other to form a V-configured having an apex.
12 more elements
A gas turbine air intake system comprising:
- (a) a gas turbine air intake system frame having a tube sheet defining an aperture;
- (b) a first filter element mounted on the frame and sealed against the tube sheet in gas-flow communication with the aperture;
- the first filter element including:
- (i) at least a first media construction;
- the first media construction having opposite first and second ends and a plurality of flutes;
- (ii) each of the flutes having a first end portion adjacent to the first media construction first end, and a second end portion adjacent to the first media construction second end;
- (A) selected ones of the flutes being open at the first end portion and closed at the second end portion;
- and selected ones of the flutes being closed at the first end portion and open at the second end portion to result in an upstream flow face and a downstream flow face;
- and
- (c) a cleaning system oriented to send flow of pressurized fluid into the first media construction through the downstream flow face, and out of the first media construction through the upstream flow face.
7 more elements
A method of servicing a gas turbine air intake system;
- the method comprising:
- (a) removing a first filter element arrangement from a tube sheet mounted on a gas turbine air intake system frame, including releasing a seal between the first filter element and the tube sheet;
- the first filter element arrangement including:
- (i) a first media construction and a second media construction;
- the first media construction having opposite first and second ends and a plurality of flutes;
- (ii) each of the flutes having a first end portion adjacent to the first media construction first end, and a second end portion adjacent to the first media construction second end;
- (A) selected ones of the flutes being open at the first end portion and closed at the second end portion;
- and selected ones of the flutes being closed at the first end portion and open at the second end portion to result in an upstream flow face and a downstream flow face;
- (iii) the second media construction having opposite first and second ends and a plurality of flutes;
- (A) each of the second media construction flutes having a first end portion adjacent to the second media construction first end, and a second end portion adjacent to the second media construction second end;
- (B) selected ones of the second media construction flutes being open at the second media construction first end portion and closed at the second media construction second end portion;
- and selected ones of the flutes being closed at the second media construction first end portion and open at the second media construction second end portion to result in a second media construction upstream flow face and a second media construction downstream flow face;
- (iv) the first media construction and the second media construction being secured together to form a first V-configuration of Z-media having a non-rectangular parallelogram shape;
- (b) orienting a second, new filter element arrangement into sealing engagement with the tube sheet;
- the second filter element arrangement including:
- (i) a first media construction and a second media construction;
- the first media construction having opposite first and second ends and a plurality of flutes;
- (ii) each of the flutes having a first end portion adjacent to the first media construction first end, and a second end portion adjacent to the first media construction second end;
- (A) selected ones of the flutes being open at the first end portion and closed at the second end portion;
- and selected ones of the flutes being closed at the first end portion and open at the second end portion to result in an upstream flow face and a downstream flow face;
- (iii) the second media construction having opposite first and second ends and a plurality of flutes;
- (A) each of the second media construction flutes having a first end portion adjacent to the second media construction first end, and a second end portion adjacent to the second media construction second end;
- (B) selected ones of the second media construction flutes being open at the second media construction first end portion and closed at the second media construction second end portion;
- and selected ones of the flutes being closed at the second media construction first end portion and open at the second media construction second end portion to result in a second media construction upstream flow face and a second media construction downstream flow face;
- (iv) the first media construction and the second media construction of the second filter element arrangement being secured together to form a V-configuration of Z-media;
- wherein the first media construction and the second media construction of the second, new filter element arrangement each form a non-rectangular parallelogram.
23 more elements
Dependencies are inferred from the claim text.