Fluid heating apparatus

Details Fluid heating apparatus Fluid heating apparatus

2005-08-09

2005-08-09

Campbell, Thor S. (Department: 3742)

Electric resistance heating devices

Heating devices

Continuous flow type fluid heater

C392S497000

Reexamination Certificate

active

06928237

ABSTRACT:
In a fluid heating apparatus, a heat protect temperature sensor indirectly detects temperature of fluid heated by an electric heater adjacent to the electric heater. Also, a heated fluid sensor detects the temperature of the fluid adjacent to a fluid inlet of a heat exchanger. When it is determined that the temperature difference between the detected temperatures exceeds a predetermined level, electric power supply to the electric heater is discontinued. Thus, boil-dry is restricted early with a simple means.

REFERENCES:
patent: 5872890 (1999-02-01), LaCombe
patent: 6205292 (2001-03-01), Pokorny et al.
patent: 7-035407 (1995-02-01), None
patent: 10-287123 (1998-10-01), None

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