Patent ID: 6251271
Filing Date: 2001-06-26
Classification: B01D

Abstract:
Membrane module (1) of pressurised fluid purifiers that use membrane separation, said membrane module (1) comprising a pressure vessel (3) that has an inlet (5) for fluid to be purified, a permeate outlet (7) for purified fluid, and a reject outlet (9), the membrane module (1) further comprising a filtering unit (11) provided in the pressure vessel (3) and a circulating pump (10), characterized in that the filtering unit (11) comprises at least two flow segments (12, 13), that the separation between the flow segments (12, 13) is essentially impervious to fluids along essentially the entire length of the flow segments (12, 13) in a direction of flow (4, 6) of the fluid to be purified, that a permeate passage (8) for purified fluid is located in the flow segments (12, 13), said permeate passage (8) extending transverse to the extension of the flow segments (12, 13) in said direction of the flow (4, 6) of the fluid to be purified that the filtering unit (11) comprises a plurality of filtering elements (17) extending in said direction of flow, each of said filtering elements having a seal (20) at one end and an opening (22) at the other end, and adjacent openings (22) being connected with each other by barriers (21) that surround the openings (22), and that the permeate passage (8) is defined by and in communication with said openings (22) and said barriers (21).