Apparatus for multistage purification of water
First Claim
1. A multistage purification system adapted to be connected to inlet tubing from a water source and to outlet tubing for discharging reject water, comprising:
- a substantially cylindrical pressure vessel having a base end and an opposite end, said pressure vessel including inlet means on the base end of the pressure vessel for receiving water into said pressure vessel for purification, at least one rejected water outlet means on the base end of the pressure vessel for discharging rejected water from said pressure vessel, and a central core area within the pressure vessel opening through the base end of the pressure vessel to outside the pressure vessel;
at least one purification medium disposed within said pressure vessel and spaced radially outwardly from and concentrically surrounding the central core area; and
,an interchangeable core member for disposition within the central core area within said pressure vessel, said interchangeable core member being removably connected to said base end of the pressure vessel and housing an additional means for purifying water, said interchangeable core member including a pure water outlet means, said pure water outlet means being on the base end of the pressure vessel when the core member is connected to the base end of the pressure vessel.
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Accused Products
Abstract
An apparatus and method for the purification or water using a multistage purification system which can be connected to a source of potable water under pressure. The multistage purification system has a cylindrical pressure vessel supported on a circular leg which is capable of stable disposition on a level surface such as a countertop. The pressure vessel has a top member and a base member connected in sealed engagement. The base member has an inlet for receiving water into the pressure vessel and an outlet for discharging reject water from the pressure vessel. Housed within the pressure vessel is a plurality of purification mediums disposed in concentric disposition. In the core area of the pressure vessel, an interchangeable core member may be removably connected to the pressure vessel. Each interchangeable core member houses an additional medium for purifying water and a pure water outlet through which the purified water passes for use by the user. Influent water is purified by passing through a plurality of purification mediums before discharge for use. The purification capabilities of the system can be tailored to the user'"'"'s need and a soiled or defective core member may be replaced without compromising the integrity of the system by simply changing interchangeable core members.
108 Citations
39 Claims
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1. A multistage purification system adapted to be connected to inlet tubing from a water source and to outlet tubing for discharging reject water, comprising:
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a substantially cylindrical pressure vessel having a base end and an opposite end, said pressure vessel including inlet means on the base end of the pressure vessel for receiving water into said pressure vessel for purification, at least one rejected water outlet means on the base end of the pressure vessel for discharging rejected water from said pressure vessel, and a central core area within the pressure vessel opening through the base end of the pressure vessel to outside the pressure vessel; at least one purification medium disposed within said pressure vessel and spaced radially outwardly from and concentrically surrounding the central core area; and
,an interchangeable core member for disposition within the central core area within said pressure vessel, said interchangeable core member being removably connected to said base end of the pressure vessel and housing an additional means for purifying water, said interchangeable core member including a pure water outlet means, said pure water outlet means being on the base end of the pressure vessel when the core member is connected to the base end of the pressure vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A multistage purification system adapted to be connected to inlet tubing from a water source, to reject water outlet tubing for discharging reject water and to pure water outlet tubing for discharging pure water comprising:
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a substantially cylindrical pressure vessel, said pressure vessel comprising; a base member and a top member connected together in sealed engagement such that the water pressure within the pressure vessel is maintained if influent water is supplied to said pressure vessel under pressure; a central core area within the pressure vessel and opening to outside the vessel through the base member; a circular support leg upon which said pressure vessel rests for stable disposition on a level surface; at least one inlet means extending through the base member for receiving water into said pressure vessel for purification; and
,at least one reject water outlet means extending through the base member for discharging rejected water from said pressure vessel; a plurality of purification mediums disposed within said pressure vessel in concentric disposition; and
,an interchangeable core member for disposition within the central core area within said pressure vessel, said interchangeable core member being removably connected to said pressure vessel and housing an additional means for purifying water, said interchangeable core member including a pure water outlet. - View Dependent Claims (21, 22, 23, 24)
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25. A multistage water purification system adapted to be connected to a source of water and having a reject water outlet and a pure water outlet, comprising:
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a substantially cylindrical pressure vessel having a base end and an opposite end, said pressure vessel including inlet means for receiving water into said pressure vessel for purification, at least one rejected water outlet means for discharging rejected water from said pressure vessel, and a central core area within the pressure vessel; a first tubular filter means sealingly disposed within the pressure vessel between the ends thereof and positioned with respect to the inlet means so that influent water flows radially inwardly through the filter means; a tubular reverse osmosis filter means made up of at least one spirally wound reverse osmosis membrane, said tubular osmosis filter means surrounded by the first tubular filter means spaced radially therefrom and adapted to have influent water flow longitudinally from one end thereof toward the other end thereof over said at least one membrane with purified water passing through said at least one membrane and being directed to the center of the tubular reverse osmosis filter means and to the central core area and water containing impurities not passing through the membrane flowing from the other end thereof, said other end thereof being positioned with respect to the rejected water outlet means so that water containing impurities flowing from the said other end flow through said rejected water outlet means; sealing means cooperably positioned to direct flow of influent water passing through the first tubular filter means to the one end of the tubular reverse osmosis filter means; and an interchangeable core member for disposition within the central core area within said pressure vessel, said interchangeable core member being removably connected to said pressure vessel and housing an additional means for purifying water, said interchangeable core member including a pure water outlet means. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification