Control system for electric water heater with heat pump external

Details Control system for electric water heater with heat pump external Control system for electric water heater with heat pump external

1984-01-13

1985-09-10

Bartis, A.

Electric heating

Heating devices

Resistive element: igniter type

622386, 165 29, 219325, 219328, 219364, 237 2B, H05B 102, F28F 2700, F25B 2900, F24H 100

Patent

active

045408742

ABSTRACT:
A control system for an electric water heater operatively associated with an external heat source, such as a heat pump. The water heater includes a water storage tank provided with an electric tank heating unit having a tank thermostat which closes in response to water temperature in the tank, allowing a flow of current through the tank heating unit so as to turn it on to heat the water, and which opens when the tank thermostat has been satisfied, interrupting the current flow so as to turn the tank heating unit off. The control system as responsive to the initial current surge through the tank heating unit when the tank thermostat closes to (1) interrupt the current flow to the tank heating unit so as to maintain the heating unit off and (2) to turn on the external heat source and maintain it on until the tank thermostat opens. The initial current surge cleans the contacts of the tank thermostat by burning off any insulating oxide residues which may have formed on them. The control system includes means responsive to abnormal conditions which would prevent the external heat source from heating water effectively for (1) turning off the external heat source and turning on the tank heating unit and (2) maintaining the external heat source off and the tank heating unit on until the tank thermostat is satisfied.

REFERENCES:
patent: 3017162 (1962-01-01), Haines et al.
patent: 4385723 (1983-05-01), Sandborn et al.

Affiliated with

Also associated with

Rating

Control system for electric water heater with heat pump external does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control system for electric water heater with heat pump external, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for electric water heater with heat pump external will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1430227