Back to results
US 7,338,544 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.
Claims15
A gas filter system comprising:
- (a) a 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 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 directing a pulse of compressed gas at a force/area of 5-55 inches of water into the media construction through the downstream flow face.
3 more elements
Dependencies are inferred from the claim text.