Electric heating – Heating devices – Combined with diverse-type art device
Patent
1979-05-14
1982-08-10
Paschall, M. H.
Electric heating
Heating devices
Combined with diverse-type art device
219496, 219497, 219284, 219296, 219506, 219486, 122382, H05B 102
Patent
active
043439870
ABSTRACT:
An electric boiler includes a conductivity control having a controller responsive to both steam pressure and electrode current. The controller is operative to open a boiler feed water discharge valve when either the steam pressure or electrode current falls below predetermined values to discharge water from the boiler for a predetermined time interval after which the controller closes the discharge valve and opens a feed water valve to initiate the delivery of feed water to the boiler chamber. When the pressure or current sensor senses the elevation of steam pressure or electrode current to second preselected levels the controller closes the feed water valve. In addition, if the sensors determine that the steam pressure or electrode current have risen to third preselective levels, a transfer valve is opened to transfer boiler water to a storage tank until the pressure or current level falls to fourth preselected levels.
REFERENCES:
patent: 3187160 (1965-06-01), Williams
patent: 3488474 (1970-01-01), Saunders
patent: 3760775 (1973-09-01), Williams
patent: 3824372 (1974-07-01), Eaton
patent: 3944785 (1976-03-01), Eaton-Williams
patent: 4196341 (1980-04-01), Williams
patent: 4221955 (1980-09-01), Joslyn
Schimbke Paul A.
Williams Stanley A.
Aqua-Chem Inc.
Paschall M. H.
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