Reverse osmosis water purifier

Details Reverse osmosis water purifier Reverse osmosis water purifier

1993-03-16

1994-03-22

Sever, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210 86, 210 97, 2102572, 21032165, 2104163, B01D 6112

Patent

active

052961486

ABSTRACT:
A water purification apparatus utilizing a reverse osmosis cartridge which supplies a measured amount of potable water to substantially fill an open top pitcher of known desired size. This free-standing apparatus includes an electric pump which withdraws water from an overhead reservoir and pumps it through prefilters and the reverse osmosis cartridge, from which a brine stream returns to the reservoir and a product water stream discharges from an overhead outlet above the pitcher. Control means monitors the level and quality of water in the reservoir and halts the operation of the pump as soon as the water level falls below a lower predetermined level which is set so that the desired measured quantity will have been delivered to the pitcher from a full reservoir. The control means also halts operation when the total dissolved solids content in the reservoir reaches a preset upper limit. The quality of the product water is also monitored and compared with the quality of the water being pumped to the reverse osmosis cartridge; a "service" indicator light is illuminated when the desired percentage of total dissolved solids is not being removed by the reverse osmosis cartridge.

REFERENCES:
patent: 4160727 (1979-07-01), Harris
patent: 4711723 (1987-12-01), Bray
patent: 4713175 (1987-12-01), Bray
patent: 4842724 (1989-06-01), Bray et al.
patent: 5203803 (1993-04-01), Schoenmeyr

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