Manually operable reverse osmosis apparatus
First Claim
1. Apparatus for purifying water by reverse osmosis comprising;
- a tubular pressure resistant container housing a semipermeable membrane cartridge comprising a membrane, a purified water transfer sheet, and a spacer sheet spirally wound around a central purified water collection tube, and providing generally longitudinal channels for passage of feed water therethrough;
a pump for introducing impure feed water under elevated pressure into said tubular pressure resistant container near one end thereof for longitudinal passage through said semipermeable membrane cartridge, and means for actuating said pump; and
means for releasing said feed water as brine from said tubular pressure resistant container near the other end thereof while maintaining operating pressure therein;
in which the improvement comprises;
a. said semipermeable membrane cartridge being of cylindrical configuration and materially shorter than said tubular pressure resistant container, and of diameter to fit slidably inside said tubular pressure resistant container;
b. rod means attached to said semipermeable membrane cartridge and passing slidably and sealingly through an end of said tubular pressure resistant container for imparting longitudinal reciprocal motion of said semipermeable membrane cartridge within said tubular pressure resistant container during passage of feed water therethrough; and
including a reciprocating hollow rod communicating with the central purified water collection tube of said semipermeable membrane cartridge, for transferring purified water from said semipermeable membrane cartridge to the exterior of said tubular pressure resistant container.
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Accused Products
Abstract
A reverse osmosis apparatus includes a pump for pressurizing feed water introduced into a pressure resistant container in which is slidably mounted a semipermeable membrane cartridge. A rod, attached to an end of the semipermeable membrane cartridge, passes slidably and sealingly through one end of the pressure resistant container and is connected to means for reciprocal actuation. Means, preferably common, are provided to actuate the pump and the rod which imparts longitudinal reciprocal motion to the rod and the membrane cartridge within the pressure resistant container, thereby providing improved turbulence and circulation of the feed water through the semipermeable membrane cartridge over the membrane surfaces. The common means may be in the form of a lever operated by a handle or pedal, or by a power source such as an electric motor.
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Citations
12 Claims
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1. Apparatus for purifying water by reverse osmosis comprising;
- a tubular pressure resistant container housing a semipermeable membrane cartridge comprising a membrane, a purified water transfer sheet, and a spacer sheet spirally wound around a central purified water collection tube, and providing generally longitudinal channels for passage of feed water therethrough;
a pump for introducing impure feed water under elevated pressure into said tubular pressure resistant container near one end thereof for longitudinal passage through said semipermeable membrane cartridge, and means for actuating said pump; and
means for releasing said feed water as brine from said tubular pressure resistant container near the other end thereof while maintaining operating pressure therein;
in which the improvement comprises;a. said semipermeable membrane cartridge being of cylindrical configuration and materially shorter than said tubular pressure resistant container, and of diameter to fit slidably inside said tubular pressure resistant container; b. rod means attached to said semipermeable membrane cartridge and passing slidably and sealingly through an end of said tubular pressure resistant container for imparting longitudinal reciprocal motion of said semipermeable membrane cartridge within said tubular pressure resistant container during passage of feed water therethrough; and
including a reciprocating hollow rod communicating with the central purified water collection tube of said semipermeable membrane cartridge, for transferring purified water from said semipermeable membrane cartridge to the exterior of said tubular pressure resistant container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12)
- a tubular pressure resistant container housing a semipermeable membrane cartridge comprising a membrane, a purified water transfer sheet, and a spacer sheet spirally wound around a central purified water collection tube, and providing generally longitudinal channels for passage of feed water therethrough;
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10. A method for purifying water by passing impure feed water under elevated pressure longitudinally through a cylindridal semipermeable membrane cartridge in which the improvement comprises:
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a. slidably enclosing said cylindrical semipermeable membrane cartridge in a tubular pressure resistant container, said cylindrical semipermeable membrane cartridge being shorter than said tubular pressure resistant container; b. introducing said impure feed water into said tubular pressure resistant container near one end thereof for longitudinal passage through said cylindrical semipermeable membrane cartridge, and releasing said impure feed water as brine from said pressure resistant container near the other end thereof while maintaining operating pressure therein; c. imparting longitudinal reciprocal motion of said cylindrical semipermeable membrane cartridge with respect to said tubular pressure resistant container, while passing impure feed water therethrough; and
,d. transferring purified water from said cylindrical semipermeable cartridge through a hollow rod passing slidably and sealingly through an end of said tubular pressure resistant container to the exterior of said tubular pressure resistant container. - View Dependent Claims (11)
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Specification