Method and apparatus for reducing the current drain on the sacri

Details Method and apparatus for reducing the current drain on the sacri Method and apparatus for reducing the current drain on the sacri

1989-09-06

1990-11-20

Reynolds, Bruce A.

Electric resistance heating devices

Heating devices

Tank or container type liquid heater

204196, 204197, F24H 100

Patent

active

049720660

ABSTRACT:
The adverse effects of the exposed metal jacket on a heating element in an electric water heater on the life and performance of a protective anode are eliminated or substantially reduced with the system that imposes a low voltage differential between the heating element jacket and the tank wall while simultaneously providing a low resistance current path which will provide a direct coductive path between the jacket and tank wall (at ground) in the event of an overvoltage condition. The system includes a potentiometer control which may be adjusted to provide the appropriate low voltage differential sufficient to substantially reduce the anode current. The relatively low resistance path allows an overvoltage current to pass readily to ground.

REFERENCES:
patent: 3132082 (1964-05-01), Overmyer
patent: 3176115 (1963-05-01), Balis
patent: 3425921 (1969-02-01), Sudrabin
patent: 4255242 (1981-03-01), Freeman
patent: 4255647 (1981-03-01), Rickert et al.
patent: 4848616 (1989-07-01), Nozaki

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