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US 11,376,529 B2Granted
Particle filter system
AssigneeIP 33 Ltd
InventorPiush Soni
Life of this patent
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Abstract
A particle filtration system that includes first, second and third filter segments that each include several first, second and third filters. Each first, second and third filter includes a fibrous layer sandwiched between a pair of surface or outer layers. The range of pore sizes of each first, second and third filter varies according to the density of the surface layers relative to the fibrous layers.
Claims17
A particle filtration system, comprising:
- a first filter segment that comprises five first filters, wherein
- each of the first filters includes a first fibrous layer and a first pair of surface layers sandwiching the first fibrous layer,
- the first surface layers comprise a higher density than the first fibrous layer,
- the first surface layers each include a first range of pore sizes, and
- each of the first filters comprises a composition of 75% first fibrous layer and 25% first surface layers;
- a second filter segment that includes five second filters, wherein
- each of the second filters includes a second fibrous layer and a pair of second surface layers sandwiching the second fibrous layer,
- the second surface layers comprise a higher density than the second fibrous layer, the second surface layers each include a second range of pore sizes, and the second range of pore sizes is smaller than but overlaps with the first range of pore sizes, and
- each of the second filters comprises a composition of 55% second fibrous layer and 45% second surface layers;
- and
- a third filter segment that comprises a plurality of third filters, wherein
- each of the third filters includes a third fibrous layer having a first and second filter surface, and a pair of third surface layers sandwiching the first and second filter surface of the third fibrous layer,
- the third surface layers comprise a higher density than the third fibrous layer, the third surface layers each include a third range of pore sizes, and the third range of pore sizes is smaller than but overlaps with the second range of pore sizes, and
- the third filter comprises a composition of 25% third fibrous layer and 75% third surface layers.
11 more elements
A particle filter system, comprising:
- a first filter segment that comprises a plurality of first filters, wherein
- each of the first filters includes a first fibrous layer configured to capture particulates bonded between a pair of first outer layers,
- the first outer layers comprise a higher density than the first fibrous layer,
- the first outer layers each include a first range of pore sizes, and
- each of the first filters comprises a composition of between 50-95% first fibrous layer and 5-50% first outer layers;
- a second filter segment that includes a plurality of second filters, wherein
- each of the second filters includes a second fibrous layer configured to capture particulates bonded between a pair of second outer layers,
- the second outer layers comprise a higher density than the second fibrous layer,
- the second outer layers each include a second range of pore sizes,
- the second range of pore sizes is smaller than but overlaps with the first range of pore sizes, and
- each of the second filters comprises a composition of between 40-85% second fibrous layer and 15-60% second outer layers;
- and
- a third filter segment that comprises a plurality of third filters, wherein
- each of the third filters includes a third fibrous layer configured to capture particulates bonded between a pair of third outer layers,
- the third outer layers comprise a higher density than the third fibrous layer,
- the third outer layers each include a third range of pore sizes,
- the third range of pore sizes is smaller than but overlaps with the second range of pore sizes, and
- the third filter comprises a composition of between 0-75% third fibrous layer and 25-100% third outer layers.
15 more elements
A particle filter system, comprising:
- a first filter segment that comprises more than one first filter, wherein
- each first filter includes a fibrous particle storage medium bonded between a pair of first filter media having a first range of pore sizes, and
- only edges of each more than one first filter are fixed together while each first filter is in physical contact with each proximate first filter;
- a second filter segment that comprises more than one second filter, wherein
- each second filter includes a fibrous particle storage medium bonded between a pair of second filter media having a second range of pore sizes, and
- only edges of each more than one second filter are fixed together while each second filter is in physical contact with each proximate second filter;
- and
- a third filter segment that comprises more than one third filter, wherein
- each third filter includes a fibrous particle storage medium bonded between a pair of third filter media having a third range of pore sizes, and
- only edges of each more than one third filter are fixed together while each third filter is in physical contact with each proximate third filter;
- and
- wherein the second range of pore sizes is smaller than but overlaps with the first range of pore sizes and the third range of pore sizes is smaller than but overlaps with the second range of pore sizes.
9 more elements
Dependencies are inferred from the claim text.