Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1993-03-22
1996-07-16
Drodge, Joseph W.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 97, 210143, 210192, 210232, 210282, 250432R, 4221863, B01D 35143, B01J 1910
Patent
active
055363954
ABSTRACT:
A point of use water purification system for home use is provided comprising a carbon block filter housed in a self-contained disposable pressure vessel for removing particulates and organic contaminants from water. The filter is provided with a pore-size distribution, a binder and a flow path which optimizes filtration performance and enhances microbiological kill rates obtained in a source of radiant energy which is used to kill microorganisms in the filtered water. The source of radiant energy comprises an ultraviolet discharge lamp having an elongate central axis and a diverter for providing a spiral plug flow of water about the discharge lamp. A flow regulator adjusts flow through the system for varying line pressure conditions to ensure adequate exposure of microorganisms to ultraviolet energy. A lamp control circuit conserves power and optimizes ultraviolet output. A diagnostic system includes a filter monitor which provides an automatic indication to the user when the filter has reached its end of life. The diagnostic system includes a radiation source monitor which provides an automatic indication to the user when the UV discharge bulb has malfunctioned. A filter quick-disconnect, a radiation source quick-disconnect and associated power safety interlocks protect the user and facilitate the safe and easy replacement of the disposable filter cartridge and ultraviolet discharge bulb.
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