Back to results
US 6,673,242 B1Granted
Open-channeled spiral-wound membrane module
AssigneeOsmotek, Inc.
InventorJack Herron
Life of this patent
Estimating the term…
Abstract
There is disclosed a spiral-wound membrane module design for various membrane filtration techniques having significantly reduced fluid flow resistance in the feed stream path. Specifically, the inventive spiral-wound membrane module is designed having a corrugated entrance and exit spacers together over less than 10% of the length of the spiral wound module and a stiffener sheet wound to provide for uniform feed channel gap width.
Claims13
A spiral wound membrane module having a length and a radius and a circular cross section, and having reduced fluid flow resistance, comprising:
- (a) an envelope sandwich wound around a center tube having a width equal to the length of the membrane module and comprising a layer of membrane next to a layer of permeate spacer material next to a layer of stiffener sheet next to a layer of permeate spacer material next to a layer of membrane, wherein each layer of the membrane sandwich has a width equal to the length of the membrane module, and wherein the envelope sandwich is wrapped around the center tube increasing the radius of the membrane module;
- and
- (b) a structural assembly located between each wrap of the envelope sandwich, extending no more than 30% of the length of the membrane module, to provide an open path for each feed chamber throughout the length of the membrane module.
Dependencies are inferred from the claim text.