Integral water heater and water temperature sensor

Details Integral water heater and water temperature sensor Integral water heater and water temperature sensor

1998-09-04

2000-05-30

Walberg, Teresa

Electric resistance heating devices

Heating devices

Immersion heater details

392455, 392500, 219520, H05B 102

Patent

active

060699981

ABSTRACT:
A screwplug type water heater (10) has a heating element (12) immersible in a water heater tank (T) to heat water (L). Electrical terminals (28) on the outer end of the heater connect the heating element into a heater circuit (H) for a control unit (14). The control unit also includes a sensing circuit (S) for the unit to be responsive to water temperature inputs to turn-on the heater to heat water to a desired temperature and maintain it there. A thermistor (16) provides a temperature input to the control circuit. The thermistor is encapsulated in a bracket (32) mounted in, or integrally formed with, the screwplug to sense water temperature. Terminals (36) on the outer end of the heater allow the thermistor to be connected into the control circuit.

REFERENCES:
patent: 5586214 (1996-12-01), Eckman

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