Self-cleaning filter
AssigneeCeco Environmental IP Inc.
InventorJan STUIVER
Life of this patent
Estimating the term…
Abstract
Embodiments relate generally to a self-cleaning filter. A filter may include a tube comprising perforations. The tube may be configured to receive a flow of a liquid from a first direction or a flow of a gas from a second direction opposite to the first direction. The filter may also include a filter media positioned concentrically around the tube, and spacers positioned between the tube and the filter media to create a space between the tube and the filter media. A portion of the filter media is configured to flex inward into the space during the flow of liquid into the filter, and flex outward from the space during the flow of gas exiting the filter.
Claims22
A filter comprising:
- a tube comprising perforations, the tube configured to receive a flow of a liquid from a first direction or a flow of a gas from a second direction opposite to the first direction;
- a filter media positioned concentrically around the tube;
- and
- one or more spacers positioned between the tube and the filter media to create a space between the tube and the filter media;
- wherein a portion of the filter media is configured to flex inward into the space during the flow of the liquid into the filter, and flex outward from the space during the flow of the gas exiting the filter.
A filter comprising:
- a plurality of tubes, each tube comprising perforations and each tube configured to receive a flow of a liquid from a first direction or a flow of a gas from a second direction opposite to the first direction;
- and
- a filter media positioned concentrically around the plurality of tubes to form a space between adjacent tubes of the plurality of tubes and a portion of the filter media;
- wherein the portion of the filter media is configured to flex inward into the space during the flow of the liquid into the filter, and flex outward from the space during the flow of the gas exiting the filter.
A method of filtering a fluid, the method comprising:
- receiving a liquid in a vessel including a filter;
- receiving the liquid in the filter from a first direction, wherein the filter comprises:
- a tube including perforations;
- a filter media positioned concentrically around the tube;
- and
- one or more spacers positioned between the tube and the filter media, wherein a space is created between the tube and the filter media when the liquid is received from the first direction;
- flexing a portion of the filter media inward into the space upon receipt of the liquid;
- accumulating a filter cake on the filter media in response to receiving the liquid in the filter from the first direction;
- receiving a gas in the filter from a second direction opposite to the first direction;
- flexing the portion of the filter media outwards from the space upon receipt of the gas;
- and
- removing the filter cake from the filter media based on flexing the portion of the filter media outwards.
A method comprising:
- receiving a liquid in a vessel including a filter;
- receiving the liquid in the filter from a first direction, wherein the filter comprises:
- a plurality of tubes, each tube comprising perforations;
- and
- a filter media positioned concentrically around the tubes to form a space between two tubes and a portion of the filter media;
- flexing the portion of the filter media inward into the space upon receipt of the liquid;
- accumulating a filter cake with the filter media;
- receiving a gas in the filter from a second direction opposite to the first direction;
- flexing the portion of the filter media outwards from the space upon receipt of the gas;
- and
- removing at least a portion of the filter cake from the filter media in response to flexing the portion of the filter media outwards.
Dependencies are inferred from the claim text.