Electronic charging control device for electric storage heaters

Details Electronic charging control device for electric storage heaters Electronic charging control device for electric storage heaters

1975-10-06

1977-08-02

Truhe, J. V.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219365, 219378, 126400, 165118, 219497, H05B 102

Patent

active

040397734

ABSTRACT:
The invention relates to a control unit for electric storage heaters which are supplied with energy during low tariff periods and which give up stored energy during high tariff periods. An electronic integrator which is judiciously charged and discharged is used as a control indicator. The integrator is (1) charged to a fixed predetermined value during the high tariff period and (2) discharged starting at the beginning of the low tariff period at a rate inversely proportional to the outdoor temperature. The discharged state of the integrator is sensed and at that time, and for the remainder of the low tariff period, a signal is developed which can be used to actuate a relay to direct electrical energy to storage heaters. If the integrator does not fully discharge during the low tariff period the remaining charge is sensed and a synchronizing circuit is actuated to rapidly remove the charge prior to the start of the high tariff period.

REFERENCES:
patent: 3975620 (1976-08-01), Hallgreen

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