Sensorless flammable vapor protection and method

Details Sensorless flammable vapor protection and method Sensorless flammable vapor protection and method

2005-04-12

2005-04-12

Lu, Jiping (Department: 3749)

Liquid heaters and vaporizers

Stand boiler

And condition responsive feature

C122S014200, C122S014220, C122S504000

Reexamination Certificate

active

06877462

ABSTRACT:
A water heater control system that prevents the accumulation and accidental ignition of dangerous quantities of unwanted flammable vapors. The system intermittently generates a spark at a predetermined interval such that if unwanted flammable vapors are present, they are burned in a controlled manner. The system obviates the need for flammable vapor sensors.

REFERENCES:
patent: 2661798 (1953-12-01), Clevenger et al.
patent: 3734136 (1973-05-01), Lefever
patent: 4431402 (1984-02-01), Hamilton
patent: 4976608 (1990-12-01), Hyde
patent: 5937796 (1999-08-01), Sebastiani
patent: 5938426 (1999-08-01), McGehee
patent: RE37745 (2002-06-01), Brandt et al.
patent: 6418882 (2002-07-01), Trant et al.

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