Water purification system
First Claim
1. A water filter system comprising:
- (a) a housing assembly having an inlet port and an outlet port for directing water flow through the housing;
(b) a filter disposed in the housing between the inlet port and the outlet port;
(c) an ultraviolet lamp disposed in the housing between the filter and the outlet port;
(d) shield means between the filter and the ultraviolet lamp for channeling the water flow adjacent substantially the entire length of the lamp and for shielding the filter from ultraviolet radiation; and
(e) a venting means in the housing assembly to equalize pressure therein for separating the treated water from the untreated water within the housing when the water flow through the housing stops.
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Accused Products
Abstract
A water purification system utilizes a radial filter and an ultraviolet lamp in a small, portable, countertop housing. A standpipe is positioned between the filter and the ultraviolet lamp to control the flow of water so that it flows along substantially the entire length of the UV lamp. The lamp is made integral with a quartz-tube covering and a threaded cap and connector to enable replacement of the UV lamp assembly. The housing encompassing the filter system is also easily disassembled to enable cleaning of the housing and replacement of the filter. A pressure vent is provided in the housing cover to equalize pressure and provide for a water level differential when the filter is disabled. A UV lamp indicator is included to show that the lamp is in operation.
129 Citations
19 Claims
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1. A water filter system comprising:
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(a) a housing assembly having an inlet port and an outlet port for directing water flow through the housing; (b) a filter disposed in the housing between the inlet port and the outlet port; (c) an ultraviolet lamp disposed in the housing between the filter and the outlet port; (d) shield means between the filter and the ultraviolet lamp for channeling the water flow adjacent substantially the entire length of the lamp and for shielding the filter from ultraviolet radiation; and (e) a venting means in the housing assembly to equalize pressure therein for separating the treated water from the untreated water within the housing when the water flow through the housing stops. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A water purification system comprising:
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(a) an elongated, hollow housing having a water inlet port and a water outlet port; (b) a tubular-shaped filter disposed within the housing; (c) a tubular-shaped pipe disposed within the filter; (d) a tubular-shaped ultraviolet lamp disposed within the pipe so that the pipe runs substantially the entire length of the lamp, (e) the pipe being closed at a first end and being open at a second end to enable water flow to pass through the second end and adjacent to the length of the lamp, the pipe being impervious to ultraviolet radiation to shield the filter therefrom; and (f) venting means in the housing assembly to equalize pressure therein for separating the treated water from the untreated water within the housing, so that when the water flow through the water inlet port stops, the water level in the pipe drops below the open end of the pipe. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A water filter system comprising:
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(a) a housing assembly having an inlet port and an outlet port in the base of the housing for directing water flow through the housing, the outlet port being in communication with an outlet faucet; (b) a replaceable filter disposed in the housing between the inlet port and the outlet port; (c) an ultraviolet lamp disposed in the housing between the filter and the outlet port; (d) pipe means attached to the base of the housing assembly, disposed between the filter and the ultraviolet lamp and having an opening at the top of the pipe means for channeling the water flow adjacent substantially the entire length of the lamp, and (e) a vent in the housing assembly to equalize pressure therein for separating the treated water from the untreated water within the housing, so that when the water flow through the inlet port stops, the water level in the pipe means drops to the level of the outlet faucet.
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Specification