Fluid purification device and ultraviolet lamp therefor
First Claim
1. An ultraviolet lamp for immersion in the fluid of a fluid purifying device, and the like, comprising:
- an elongate transparent envelope having sealed opposite ends, each mounting an ignition element located within said envelope;
a continuous solid thin film of material having a non-stick characteristic with respect to a fluid being treated by the device, said film surrounding said envelope and being fixed to and in intimate contact with the outer surface of said envelope;
base means at one end of said envelope including a base member hermetically sealing the adjacent end of said film with respect to said envelope; and
a cap member for the opposite end of said envelope hermetically sealing the adjacent end of said film with respect to said envelope.
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Accused Products
Abstract
A unitary device for purifying water and other fluids embodying an annular filter surrounding an elongate tube which in turn surrounds and cooperates with an elongate ultraviolet lamp to form a flow channel for fluid to be irradiated. Fluid passing through the filter is conveyed through the flow channel along the length of the lamp to effect sterilization. The lamp is encased in a film of material having non-stick characteristics with respect to the fluid being treated, such as fluorinated ethylene propylene, to prevent buildup of scale and other contamination on the surface of the lamp which would otherwise reduce transmission of ultraviolet rays to the fluid. The lamp assembly is constructed as a replaceable removable unit which is adapted to be mounted in reversed endwise position to accommodate the device for different types of installations.
108 Citations
10 Claims
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1. An ultraviolet lamp for immersion in the fluid of a fluid purifying device, and the like, comprising:
- an elongate transparent envelope having sealed opposite ends, each mounting an ignition element located within said envelope;
a continuous solid thin film of material having a non-stick characteristic with respect to a fluid being treated by the device, said film surrounding said envelope and being fixed to and in intimate contact with the outer surface of said envelope;
base means at one end of said envelope including a base member hermetically sealing the adjacent end of said film with respect to said envelope; and
a cap member for the opposite end of said envelope hermetically sealing the adjacent end of said film with respect to said envelope. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- an elongate transparent envelope having sealed opposite ends, each mounting an ignition element located within said envelope;
Specification