Refrigeration – Automatic control – With correlated manual or external operator and condition...
Patent
1994-06-02
1997-04-15
Tanner, Harry B.
Refrigeration
Automatic control
With correlated manual or external operator and condition...
62202, 236 68B, G05D 2300
Patent
active
056198604
ABSTRACT:
A controlling apparatus for an air conditioner includes a relay serving to control the feeding of electricity to a compressor, a semiconductor element including a controlling terminal to control the feeding of electricity to a magnetizing coil of said relay, a temperature controlling mechanism for changing the connected state between contact points thereof to another one depending on a preset temperature value and a detected temperature value, a heating section adapted to generate heat by feeding a small quantity of electric current while performing temperature compensation in association with the changing operation with the contact points in the temperature controlling mechanism connected to each other, electricity transmitting paths each serving to feed the electricity fed from the contact points in the temperature controlling mechanism to the controlling terminal of each of the semiconductor elements therethrough, and a restricting circuit for allowing the semiconductor elements disposed in the electricity transmitting paths to restrict the feeding of electricity to the magnetizing coil in response to the feeding of a small quantity of electricity.
REFERENCES:
patent: 3948438 (1976-04-01), Vlasak
patent: 4114681 (1978-09-01), Denny
patent: 4948045 (1990-08-01), Romano
patent: 5299430 (1994-04-01), Tsuchiyama
Masayuki Shimizu
Yuji Tsuchiyama
Sanyo Electric Co,. Ltd.
Tanner Harry B.
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