Refrigerating apparatus and refrigerator control and brushless motor starter used in same
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United States of America Patent
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Oct 26, 1999
Issued Date -
N/A
app pub date -
Oct 20, 1998
filing date -
Mar 14, 1995
priority date (Note) -
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status (Latency Note)
Importance
Abstract
When a lock detector detects a locked state of a DC motor in a starting stage, a torque increasing circuit immediately selects a starting sequence pattern of an output torque that is greater in magnitude by one preselected step, and outputs the selected output torque to a starting sequence controller, so that a compressor can be restarted speedily without repeating starting failures. A compressor, driven by a DC motor, has a shell of an internal pressure approximately equal to the pressure of an inhalation gas. An inverter is provided to make the speed of the DC motor variable. A rotational frequency setting circuit sets the rotational frequency of the DC motor to a frequency that is not greater than the frequency of a commercial power source when the internal temperature of a refrigerator is stabilized. By this construction, the power consumption can be remarkably reduced.
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Family
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