Patent ID: 11951444
Assignee: BLUEWATER SWEDEN AB
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A water filter unit for purifying pressurized water fed to the water filter unit, said water filter unit comprising;
a containment defined by a wall section, a first end section and a second end section, wherein the wall section is attached to the first end section and the second end section;
a water inlet arranged in said first or second end section through which the pressurized water is fed into the containment;
a filter membrane arranged in said containment such that at least part of the water is fed through the filter membrane;
a first water outlet for filtered water from the membrane;
wherein the water filter unit further comprises an injector pump arranged to increase the flow velocity of said pressurized water fed to the filter membrane, and said injector pump is furthermore arranged to receive unfiltered water not fed through the membrane and recirculate said unfiltered water within the containment;
wherein the water filter unit further comprises an elongated pipe with a perforated wall connected to the first water outlet, wherein the filter membrane is a reverse osmosis filter membrane arranged around said elongated pipe and the filtered water enters the elongated pipe via the perforations in the elongated pipe when the water is being fed to the water filter unit;
and wherein the water filter unit further comprises a channel arranged for transporting the pressurized water and the recirculated water from said injector pump to said filter membrane;

wherein said channel is arranged within the elongated pipe such that a passage between said elongated pipe and said channel is formed.