Mist filtration arrangement utilizing fine fiber layer in contact with media having a pleated construction and floor filter method
First Claim
Patent Images
1. A mist collection filter comprising a filter media, the filter media comprising:
- (a) a mist polish layer having a first end and a second end, said layer comprising a substantially planar sheet-like substrate having a first side and a second side, said layer having a plurality of pleats formed therein and extending from said first end to said second end, the layer comprising a substrate having a pore size less than 400 microns, a permeability of about 50 to 1000 feet per minute;
a thickness of less than 0.05 inch and a basis weight greater than 30 lb.-3000 ft−
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(b) at least one of said first side or said second side of the substrate, substantially covered by a polymeric fine fiber layer, the layer having a thickness of about 0.2 to 100 microns, the fiber having a diameter of about 0.01 to about 5 microns and said media layer being secured in said filter wherein the filter has the capacity of collecting and draining in a liquid form at least 50 mg/m3 of mist.
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Accused Products
Abstract
Filter arrangements for mist removal include a barrier media, usually pleated, and treated with a deposit of fine fibers. Filter arrangements may take the form of tubular, radially sealing elements; tubular, axial sealing elements; forward flow air cleaners; reverse flow air cleaners; and panel filters and can have multiple layers of fine fiber containing pleated media.
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Citations
43 Claims
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1. A mist collection filter comprising a filter media, the filter media comprising:
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(a) a mist polish layer having a first end and a second end, said layer comprising a substantially planar sheet-like substrate having a first side and a second side, said layer having a plurality of pleats formed therein and extending from said first end to said second end, the layer comprising a substrate having a pore size less than 400 microns, a permeability of about 50 to 1000 feet per minute;
a thickness of less than 0.05 inch and a basis weight greater than 30 lb.-3000 ft−
2;(b) at least one of said first side or said second side of the substrate, substantially covered by a polymeric fine fiber layer, the layer having a thickness of about 0.2 to 100 microns, the fiber having a diameter of about 0.01 to about 5 microns and said media layer being secured in said filter wherein the filter has the capacity of collecting and draining in a liquid form at least 50 mg/m3 of mist. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 40, 41)
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16. A sheet-like filter media for mist collection comprising a fine fiber layer in intimate contact with a substantially planar sheet-like mist polish substrate, said substrate having a pore size less than about 400 microns, a permeability about 150 to 400 feet per minute, a thickness of less than about 0.05 inch and a basis weight greater than 40 lbs-3000 ft−
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said sheet-like substrate having a first side and a second side, at least one of said first side and said second side of the sheet-like substrate substantially covered by a layer of polymeric fine fiber, the fiber having a diameter of about 0.1 to about 5 microns, the layer having a thickness of about 0.2 to 100 microns wherein the filter has the capacity of collecting and draining in a liquid form at least 50 mg/m3 of mist. - View Dependent Claims (17, 18, 19)
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20. A mist collection filter comprising a filter media layer, the filter media comprising:
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(a) a mist polish layer having a first end and a second end, said media layer comprising a substantially planar sheet-like substrate having a first side and a second side, said layer having a plurality of pleats formed therein and extending from said first end to said second end, the layer comprising a media having a pore size less than 400 microns, a permeability of about 150 to 400 feet per minute;
a thickness of less than 0.05 inch and a basis weight greater than 40 lbs-3000 ft−
2;(b) said first side and said second side of the sheet-like substrate, at least partially covered by a polymeric fine fiber layer, the layer having a thickness of about 0.1 to 100 microns, the fiber having a diameter of about 0.01 to about 5 microns and said media layer being secured in said filter wherein the filter has the capacity of collecting and draining in a liquid form at least 50 mg/m3 of mist. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 42, 43)
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35. A sheet-like filter media for mist collection comprising a fine fiber layer in intimate contact with a substantially planar sheet-like mist polish substrate, said substrate having a pore size less than about 400 microns, a permeability about 150 to 400 feet per minute, a thickness of less than about 0.05 inch and a basis weight greater than 40 lbs-3000 ft−
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said sheet-like substrate having a first side and a second side, said first side and said second side of the sheet-like substrate substantially covered by a layer of polymeric fine fiber, the fiber having a diameter of about 0.1 to about 5 microns, the layer having a thickness of about 0.1 to 100 microns wherein the filter has the capacity of collecting and draining in a liquid form at least 50 mg/m3 of mist. - View Dependent Claims (36, 37, 38)
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39. A mist collection filter comprising a filter media, the filter media comprising:
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(a) a mist polish layer having a first end and a second end, said layer comprising a substantially planar sheet-like substrate having a first side and a second side, said layer having a plurality of pleats formed therein and extending from said first end to said second end, the layer comprising a substrate having a pore size less than 400 microns, a permeability of about 50 to 1000 feet per minute;
a thickness of less than 0.05 inch and a basis weight greater than 30 lb.-3000 ft−
2;(b) at least one of said first side or said second side of the substrate, substantially covered by a polymeric fine fiber layer, the layer having a thickness of about 0.2 to 100 microns, the fiber having a diameter of about 0.01 to about 5 microns and said media layer being secured in said filter wherein the filter has the capacity of collecting at least 50 mg/m3 of mist and draining the mist in a liquid form; wherein the filter comprises an outerwrap filter having a porosity and permeability greater than the filter.
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Specification