Electric heating – Heating devices – Combined with diverse-type art device
Patent
1989-03-20
1990-08-28
Envall, Jr., Roy N.
Electric heating
Heating devices
Combined with diverse-type art device
H05B 360
Patent
active
049527797
ABSTRACT:
An electrode water boiler, preferably for the humidification of air, comprising a boiler having two or more electrodes connected to an electrical supply source between which current flows through the water in order to heat the water, the boiler also having a steam outlet, a valve for feeding water into the boiler, a valve for discharging water from the boiler, a sensor for sensing the current in one or more electrodes, and control means responsive to the sensed electrode current arranged to initiate the feed water valve when the electrode current is below a predetermined lower value and to initiate the water discharge valve after the electrode current has risen above a predetermined higher value and, following the initiation of the feed water valve and the electrode current subsequently rising to a predetermined intermediate value between the said lower and higher values, to effect the introduction, into the boiler, of a fixed measured quantity of feed water.
REFERENCES:
patent: 3937920 (1976-02-01), Gundacker et al.
patent: 4347430 (1982-08-01), Howard-Leicester
patent: 4382173 (1983-05-01), Howard-Leicester
patent: 4418269 (1983-11-01), Eaton-Williams
patent: 4430555 (1984-02-01), Stokes
patent: 4675505 (1987-06-01), Fischer
patent: 4841122 (1989-06-01), Marton
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