Filter design and process of capturing particles
AssigneeLMS Technologies, Inc.
InventorsKui-Chiu Kwok, Ali Reza Vatine
Life of this patent
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Abstract
Various embodiments disclose filtration apparatuses and processes for filtering particles from a particle-laden air stream. In one embodiment, a filter is provided with a front face layer, in which at least one impaction nozzle is formed, is to accelerate an air stream onto an interior substrate to capture large particle sizes with a calculated fractional efficiency. The interior substrate is formed within the filter. The filter further includes a rear face layer in which at least one opening is formed to exhaust the air stream. A filter media material may be placed between the front face layer and rear face layer. Other apparatuses and processes are disclosed as well.
Claims22
A filter to capture and retain particles from an air stream, the filter comprising:
- a front face layer in which at least one impaction nozzle is formed to accelerate the air stream onto an interior substrate to capture large particle sizes with a calculated fractional efficiency, the interior substrate being formed within the filter;
- a rear face layer in which at least one opening is formed to exhaust the air stream;
- and
- a filter media material placed between the front face layer and rear face layer.
A multi-stage filter to capture and retain particles from an air stream, each stage of the multi-stage filter comprising:
- a front face layer in which at least one impaction nozzle is formed to accelerate the air stream onto an interior substrate to capture large particle sizes with a calculated fractional efficiency, the interior substrate being formed within the filter;
- a rear face layer in which at least one opening is formed to exhaust the air stream;
- and
- a filter media material placed between the front face layer and rear face layer.
A diffusion filter to capture particles from and diffuse an incoming air stream, the diffusion filter comprising:
- an front face layer having a plurality of impaction nozzles formed therein to accelerate and distribute the air stream onto a substrate;
- a rear face layer having a plurality of openings formed therein to exhaust and further distribute the air stream;
- and
- a filter media material formed between the front face layer and the rear face layer.
A process of successively capturing large particle sizes to small particle sizes from particle-laden air, the process comprising:
- accelerating the particle-laden air through a plurality of impaction nozzles to accelerate and impact particles onto an impaction substrate;
- passing the particle-laden air through a filter media material;
- and
- exhausting remaining portions of the particle-laden air.
Dependencies are inferred from the claim text.