IP Library Granted Patent US 8,177,977
Granted Patent B2
US 8,177,977 · App. 13/093,054 · Granted May 15, 2012

Water purification system and method

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Quick Facts
Patent No.
US 8,177,977
App. No.
13/093,054
Granted
May 15, 2012
Kind
B2
Abstract

The invention concerns a water purification system ( 100 ) comprising a closed water recirculation loop ( 106 ) supplied at one point by a water inlet ( 101 ) with water to be purified, (and having) at least one outlet point of use of the purified water ( 102 ) and (further comprising) pumping means ( 103 ) and water purification means ( 150 ) on the loop respectively downstream of the inlet point and upstream of the at least one outlet point ( 102 ), in the water flow direction which system is characterized in that it includes two independent valves: a first valve ( 130 ) on the loop upstream of the pumping means ( 103 ), and a second valve ( 120 ) upstream of the at least one point of use outlet point ( 102 ). The invention also relates to a water purification method.

Claims (10)

1. Water purification method allowing purified water distribution at at least two points of use simultaneously, comprising:

purifying water using water treatment means,

providing a first hydraulic connector, comprising four ports for distributing and recirculating purified water, said four ports comprising a purified fluid inlet and three outlets;

providing at least a second hydraulic connector, comprising four ports for distributing and recirculating purified water, said four ports comprising a purified fluid inlet and three outlets, wherein an outlet of said first hydraulic connector is in fluid communication with the inlet of said second hydraulic connector;

circulating the purified water in a recirculation line,

wherein for distribution in a low throughput mode, a purified water distribution line connecting the recirculation line to a purified water distribution point is opened, and the purified water recirculation line is opened, the major portion of the purified water being directly recirculated via said recirculation line;

for distribution in a high throughput mode at each point of use, the water distribution lines are opened and the recirculation line downstream of the water distribution line of said second hydraulic connector is closed, all the purified water being distributed at the distribution points via the distribution lines;

for distribution of a predetermined volume of water, the distribution line is opened and the recirculation line is closed;

for distribution in a recirculation mode of all the purified water, the recirculation line is opened and the distribution lines are closed;

and wherein water is drawn at said at least two points of use simultaneously, said high throughput mode takes priority and the throughput is distributed to each of the points of use as a function of the head losses.

Assignments (2)
CHANGE OF ADDRESS Recorded Feb 15, 2018
From: EMD MILLIPORE CORPORATION
To: EMD MILLIPORE CORPORATION
Reel/Frame 045341/0166 →
CHANGE OF NAME Recorded Jan 31, 2012
From: MILLIPORE CORPORATION
To: EMD MILLIPORE CORPORATION
Reel/Frame 027620/0891 →