Refrigeration – Automatic control – Time or program actuator
Patent
1977-11-28
1979-03-06
Braun, Leslie
Refrigeration
Automatic control
Time or program actuator
62231, 361 22, F25B 1900
Patent
active
041423755
ABSTRACT:
An automatic control apparatus for protecting the compressor motor used with the refrigeration system of an air conditioning unit. The control apparatus has a timer for prohibiting the restart of the compressor motor until the lapse of a predetermined time after temporary stoppage of the compressor motor, and a holding circuit for holding a power source voltage for a predetermined period of time while the operation of the air conditioning unit is stopped. Even if the power supply is turned off, therefore, the source voltage supplied by the holding circuit enables the timer circuit to continue its operation for a predetermined length of time.
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Abe Yuuhei
Azuma Nobuo
Kuwahara Kazuyoski
Mohri Katsuo
Tominaga Yasunori
Braun Leslie
Hitachi , Ltd.
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