Filter assembly with shaped adsorbent article; and devices and methods of use
AssigneeDonaldson Company, Inc.
InventorsDaniel L. Tuma, Andrew C. Dahlgren, Vijay Garikipati
Life of this patent
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Abstract
A filter assembly includes a shaped adsorbent article disposed in a housing. The shaped adsorbent article has one or more projections extending from a surface of the article toward the housing to provide for flow of fluid between the shaped adsorbent article and the housing. The filter assembly may optionally include a diffusion channel for additional filtering and/or one or more porous polymer films disposed over inlet or outlet openings in the housing to reduce or prevent particulate contamination. The filter assembly may be used in a device, such as a computer disk drive, to filter a fluid, such as air, within and/or entering or exiting the device.
Claims27
A method of protecting a disk drive from contaminants, comprising:
- positioning, within the disk drive, a filter assembly comprising a shaped adsorbent article disposed in a housing, the shaped adsorbent article having a plurality of projections extending from at least one surface toward the housing;
- flowing air through an inlet opening in the housing of the filter assembly;
- and
- flowing the air across the shaped adsorbent article and between the plurality of projections.
An assembly comprising:
- (a) a device housing including therein a disk drive to be protected;
- and
- (b) a filter disposed in the device housing and including
- (i) a filter housing defining an internal volume and having a first opening and a second opening for flow of air into and out of the internal volume,
- (ii) a shaped adsorbent article disposed in the filter housing, the shaped adsorbent article having a surface, and a plurality of projections extending from the surface toward the filter housing to provide for flow of air between the shaped adsorbent article and the filter housing.
An adsorbent filter assembly, comprising:
- (a) a housing having a first opening and a second opening and defining an internal volume;
- (b) a diffusion channel defined within the housing and extending from the first opening to the internal volume of the housing;
- (c) a shaped adsorbent article disposed within the internal volume of the housing, the shaped adsorbent article having
- (i) a surface;
- and
- (ii) a plurality of projections extending from the surface toward the housing to provide for flow of a fluid between the shaped adsorbent article and the housing.
An assembly comprising:
- (a) a device housing including therein a disk drive to be protected;
- and
- (b) a filter disposed in the device housing and including:
- (i) a non-porous plastic filter housing defining an internal volume and having a first opening and a second opening for flow of air into and out of the internal volume, and
- (ii) a compression molded adsorbent article disposed in the filter housing,
- wherein the adsorbent article has a surface, and at least one projection extending from the surface toward the filter housing to provide for flow of air between the adsorbent article and the filter housing.
Dependencies are inferred from the claim text.