Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1994-07-25
1996-04-02
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219481, 219506, 219502, 323236, 323908, 392465, 373102, H05B 102
Patent
active
055043062
ABSTRACT:
The present invention is an apparatus for controlling a water delivery system utilizing an instant flow tankless water heater. It includes a programmable microprocessor with support circuitry to achieve control of the outlet temperature of a varying flow rate and varying inlet temperature stream. The system senses a water outlet temperature and controls AC power through an on/off mechanism to regulate power to heating elements embedded in the water stream. The capabilities of the heating elements are improved through the application of using a microprocessor to perform a proportional (P), integrating (I) and derivative (D) calculation. The calculations are used to determine the operating characteristics of the heating system and to control the heating system.
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Graves Bill
Kramer David
Russell Robert G.
Chronomite Laboratories, Inc.
Paschall Mark H.
Sicotte John F.
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