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US 11,377,350 B2Granted
Air filter assembly
AssigneePTI Technologies, Inc.
InventorsMichael L. Gao, Kanwar Suri
Life of this patent
Estimating the term…
Abstract
A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate/coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate/coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone.
Claims26
A filter assembly comprising:
- a housing comprising a manifold having an inlet and an outlet, and a filter bowl removably coupled to the manifold;
- a particulate/coalescing element disposed in the housing, the particulate/coalescing comprising a hydrophobic filtration media;
- an ozone converter disposed in the housing, the ozone converter comprising a passageway having a catalytic interface surface;
- wherein a flow path is defined through the housing that includes flowing through the particulate/coalescing element and then through the ozone converter before exiting the housing;
- wherein the manifold comprises protrusions at a base end having holes for mounting the manifold;
- and
- wherein the ozone converter is made from an extrusion process.
4 more elements
A filter assembly comprising:
- a housing comprising a manifold having an inlet and an outlet, and a filter bowl removably coupled to the manifold;
- a particulate/coalescing element disposed in the housing, the particulate/coalescing comprising a hydrophobic filtration media;
- an ozone converter disposed in the housing, the ozone converter comprising a passageway having a catalytic interface surface;
- and
- an annular space which is defined by an interior surface of the filter bowl and an exterior surface of the particulate/coalescing element;
- wherein a flow path is defined through the housing that includes flowing through the particulate/coalescing element and then through the ozone converter before exiting the housing;
- wherein:
- the ozone converter is an extruded ozone converter;
- and/or
- the housing, the particulate/coalescing element, and the ozone converter are electrically bonded.
7 more elements
A filter assembly comprising:
- a housing comprising a manifold having an inlet and an outlet, and a filter bowl removably coupled to the manifold;
- a particulate/coalescing element disposed in the housing, the particulate/coalescing comprising a hydrophobic filtration media;
- an ozone converter disposed in the housing, the ozone converter comprising a passageway having a catalytic interface surface;
- wherein a flow path is defined through the housing that includes flowing through the particulate/coalescing element and then through the ozone converter before exiting the housing;
- wherein the manifold comprises protrusions at a base end having holes for mounting the manifold;
- and
- wherein:
- the ozone converter is an extruded ozone converter;
- and/or
- the housing, the particulate/coalescing element, and the ozone converter are electrically bonded.
7 more elements
A filter assembly comprising:
- a housing comprising a manifold having an inlet and an outlet, and a filter bowl removably coupled to the manifold;
- a particulate/coalescing element disposed in the housing, the particulate/coalescing comprising a hydrophobic filtration media;
- an ozone converter disposed in the housing, the ozone converter comprising a passageway having a catalytic interface surface;
- wherein a flow path is defined through the housing that includes flowing through the particulate/coalescing element and then through the ozone converter before exiting the housing;
- wherein the manifold is circular in shape and has a centrally located ring configured to receive the ozone converter and the particulate/coalescing element;
- and
- wherein:
- the ozone converter is an extruded ozone converter;
- and/or
- the housing, the particulate/coalescing element, and the ozone converter are electrically bonded.
7 more elements
A filter assembly comprising:
- a housing comprising a manifold having an inlet and an outlet, and a filter bowl removably coupled to the manifold;
- a particulate/coalescing element disposed in the housing, the particulate/coalescing comprising a hydrophobic filtration media;
- an ozone converter disposed in the housing, the ozone converter comprising a passageway having a catalytic interface surface;
- wherein a flow path is defined through the housing that includes flowing through the particulate/coalescing element and then through the ozone converter before exiting the housing;
- and
- wherein the ozone converter is an extruded ozone converter that is electrically bonded to the housing and the particulate/coalescing element.
3 more elements
A filter assembly comprising:
- a housing comprising a manifold having an inlet and an outlet, and a filter bowl removably coupled to the manifold;
- a particulate/coalescing element disposed in the housing, the particulate/coalescing comprising a hydrophobic filtration media;
- an ozone converter disposed in the housing, the ozone converter comprising a passageway having a catalytic interface surface;
- wherein a flow path is defined through the housing that includes flowing through the particulate/coalescing element and then through the ozone converter before exiting the housing;
- wherein the ozone converter comprises a honeycomb of passageways;
- and
- wherein:
- the ozone converter is an extruded ozone converter;
- and/or
- the housing, the particulate/coalescing element, and the ozone converter are electrically bonded.
7 more elements
A method of filtering air comprising:
- supplying air into an inlet of an air filtration system, the air filtration system comprising:
- a housing comprising a manifold having the inlet and an outlet, and a filter bowl removably coupled to the manifold;
- a particulate/coalescing element disposed in the housing, the particulate/coalescing comprising a hydrophobic filtration media;
- an ozone converter disposed in the housing, the ozone converter comprising a passageway have a catalytic interface surface;
- wherein a flow path is defined through the housing that includes flowing through the particulate/coalescing element and then through the ozone converter before exiting the housing;
- and
- wherein the ozone converter is made from an extrusion process;
- directing the air into the filter bowl;
- and
- passing the air through the particulate/coalescing element;
- and passing the air through the ozone converter after the air passes through the particulate/coalescing element;
- wherein the manifold comprises protrusions at a base end having holes for mounting the manifold.
9 more elements
Dependencies are inferred from the claim text.