Filter assembly for a data storage device
First Claim
1. A filter assembly for a data storage device comprising:
- a first assembly body defining a first flow passage having an inlet and an outlet and a first flow passage length extending between the inlet and the outlet;
a filter disposed in the first flow passage;
a second flow passage in the first assembly body having an ambient exchange opening and an opening leading to an intermediate portion of the first flow passage between the inlet and the outlet; and
a filter portion interposed between the ambient exchange opening and the opening leading to the intermediate portion of the first flow passage.
6 Assignments
0 Petitions
Accused Products
Abstract
A filter assembly for a data storage device. The filter assembly includes a flow passage having an inlet and outlet to provide a recirculating filter. The filter assembly is positioned to provide a pressure differential between the inlet and outlet of the flow passage. A breather filter includes an opening for ambient air exchange through a second flow passage which is opened to the pressure differential of the flow passage of the recirculating filter to enhance ambient air exchange. An air dam assembly interposed in an air flow path provides a high pressure region and low pressure region. An assembly structure includes an air dam and a filter flow passage to enhance the pressure differential across the flow passage. Flow turbulence through the flow passage is reduced via flow plates supported between raised edge portions of the flow passage.
39 Citations
21 Claims
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1. A filter assembly for a data storage device comprising:
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a first assembly body defining a first flow passage having an inlet and an outlet and a first flow passage length extending between the inlet and the outlet;
a filter disposed in the first flow passage;
a second flow passage in the first assembly body having an ambient exchange opening and an opening leading to an intermediate portion of the first flow passage between the inlet and the outlet; and
a filter portion interposed between the ambient exchange opening and the opening leading to the intermediate portion of the first flow passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A data storage device comprising:
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at least one disc rotationally coupled to a chassis and rotatable to provide an air flow;
at least one head positionable proximate to the at least one disc to read or write data to the at least one disc;
an assembly body defining a first flow passage having an inlet and an outlet and a first flow passage length extending between the inlet and the outlet, the inlet being adjacent the at least one disc;
a filter disposed in the first flow passage;
a second flow passage in the assembly body having an ambient exchange opening and an opening leading to an intermediate portion of the first flow passage between the inlet and the outlet; and
a filter portion interposed between the ambient exchange opening and the opening leading to the intermediate portion of the first flow passage. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for filtering air in a data storage device comprising steps of:
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providing a flow passage having an inlet proximate to a high pressure region of a disc and an outlet spaced therefrom;
providing an ambient air exchange opened to the flow passage;
providing a filter in the flow passage; and
rotating the disc to create the high pressure region to induce air flow through the flow passage and the ambient air exchange. - View Dependent Claims (19)
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20. A disc drive comprising:
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at least one disc rotationally coupled to a chassis and rotatable to provide an air flow;
at least one head proximate to the disc to read or write data to the at least one disc; and
means for filtering the air flow. - View Dependent Claims (21)
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Specification