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US 6,743,317 B2Granted
Method of sealing, housing and constructing honeycomb filters
OwnerRobert M. Wydeveninventor
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OwnerRobert M. Wydeveninventor
Estimating the term…
The invention describes an improved process for the sealing of alternating flutes of ‘honeycomb’ designed filters to be made after construction, or fabrication, of the basic filter structure, rather than during construction, as is shown in the prior art. The method seals both sides of the primary flutes as is typically done for one side in the prior art and then the media is rolled into a honeycomb shape so that secondary flutes, open on both sides of the roll are created. The roll is vertically orientated and then the lower end is immersed into a sealing compound to such a depth which will cause the sealing compound to travel up into the lower portion of the roll to a height above the height of the lower seal for the primary flutes. The sealing compound is allowed to cure, effectively sealing the secondary flutes. The roll is then cut along a line located above the height of the lower seal for the primary flutes and before the top surface of the sealing compound in the secondary flutes. When cut, a fully functional cylindrical honeycomb filter structure is formed having, on one side primary flutes sealed and secondary flutes open, and on the other side primary flutes open and secondary flutes sealed. In another embodiment, successive layers of filter media are aligned in parallel to form a rectangular, or panel, shaped filter, whose, flutes are sealed in a similar manner.
A process for manufacturing a filter element comprising:
A process for manufacturing a honeycomb filter made from a pre-determined length and width of filter media where the filter media is made from a flat-sheet and a corrugated sheet, both made of filter material and adhesively bonded to one another by applying a relatively thick, narrow strip of sealing composition between said flat-sheet and said corrugated sheet in a predetermined, relatively narrow area running lengthwise along both sides of said flat-sheet material wherein said space between said flat-sheet and corrugated material define primary flutes and where said primary flutes are sealed on either side by said sealing composition, where the filter media is then rolled to form a honeycomb roll having a plurality of sealed primary flutes and creating a plurality of unsealed secondary flutes, the improved process comprising:
A process for forming a honeycomb filter comprising, producing a honeycomb filter having primary flutes plugged on one side and secondary flutes plugged on the opposite side by initially confining the primary flutes with plugs at or near both ends horizontally, and vertically sealing the secondary flutes on one end by immersing the filter to such a depth so as to have the surface level of sealant rise to a height which is higher than the plugs for the primary flutes on the lower end and following a sufficient time for curing, cutting the filter above the lower plugs of the primary flutes and below the surface level of the cured sealant in the secondary flutes.
Dependencies are inferred from the claim text.