Refrigeration – Automatic control – Preventing – removing or handling atmospheric condensate
Patent
1989-11-20
1990-11-06
Tanner, Harry B.
Refrigeration
Automatic control
Preventing, removing or handling atmospheric condensate
62231, F25D 2106
Patent
active
049675680
ABSTRACT:
A control system for regulating electrical power input to the refrigeration mechanism or defrost mechanism in an atmospheric cooling apparatus, including domestic refrigeration appliances, is provided which employs at least one piezoceramic relay device. The electrical power is applied with the piezoceramic relay device responsive to control signals and with the control circuitry being directly and ohmically connected to the power source. In one embodiment, the control means employs individual piezoceramic relay devices for power regulation to the respective mechanisms while in a different embodiment a single piezoceramic relay device regulates power input between the refrigeration mechanism and the defrost mechanism. A method of operating the controlled apparatus in such manner and a refrigeration apparatus having such control means are also disclosed.
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Harnden, Jr. John D.
Kornrumpf William P.
General Electric Company
Krisher, Jr. Ralph E.
Tanner Harry B.
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