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US 9,308,483 B2Granted
Filter assembly
AssigneeAaf Ltd.
InventorsPaul Jackson, Jamie Donaldson
Life of this patent
Estimating the term…
Abstract
A filter assembly is provided which is particularly suitable for use in filtering intake air for gas turbines. The filter assembly (6) includes a final filter (9) and a pre-filter (8) which are directly engageable one with the other to provide a complete filter assembly. By so providing, pre-filter units may easily be removed and replaced in a compact configuration. A kit of parts is also provided.
Claims14
A filter assembly, comprising:
- a filter casing for mounting to a mounting frame of a duct, the filter casing having a plurality of inlet apertures, each inlet aperture being associated with a respective filter cell of the casing and being adapted to permit gas to flow through the casing from the inlet apertures;
- a filter medium provided to each filter cell of the casing to filter for filtering gas flowing through the casing;
- and
- a plurality of pre-filters, each pre-filter comprising:
- a pre-filter casing having an outlet aperture and being adapted to permit gas to flow through the pre-filter casing to the outlet aperture;
- and
- a pre-filter medium provided to the pre-filter casing to filter gas flowing through the pre-filter casing,
- wherein each pre-filter casing is releasably engaged directly with the filter casing so as to fixedly position the outlet aperture of the pre-filter casing, directly or via an interposed sealing gasket, over an inlet aperture of the filter casing, thereby to seal the inlet and outlet apertures together.
5 more elements
A kit, comprising:
- a filter assembly, comprising:
- a filter casing for mounting to a mounting frame of a duct, the filter casing having a plurality of inlet apertures, each inlet aperture being associated with a respective filter cell of the casing, and being adapted to permit gas to flow through the casing from the inlet apertures;
- and
- a filter medium provided to each filter cell of the filter casing for filtering gas flowing through the filter casing;
- and
- a plurality of pre-filter assemblies, each pre-filter assembly comprising:
- a pre-filter casing having an outlet aperture and being adapted to permit gas to flow through the pre-filter casing to the outlet aperture;
- and
- a pre-filter medium provided to the pre-filter casing to filter gas flowing through the pre-filter casing,
- wherein each pre-filter casing is provided with first engaging means adapted to engage directly with the filter casing having second complementary engaging means provided thereto so as to fixedly position the outlet aperture of the pre-filter casing, directly or via an interposed sealing gasket, over an inlet aperture of the filter casing, thereby to seal the inlet and outlet apertures together.
7 more elements
Dependencies are inferred from the claim text.