Refrigeration system with high speed, high frequency compressor motor
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United States of America Patent
Stats
-
Nov 19, 1991
Grant Date -
N/A
app pub date -
Sep 14, 1990
filing date -
Sep 14, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A refrigeration system utilizes a small high speed centrifugal compressor driven by a directly coupled, high frequency, electric motor. The motor has a double-ended shaft which supports the rotors of low pressure and high pressure centrifugal compressor stages. The motor operates in the refrigerant atmosphere so as to eliminate the requirement for rotating shaft seals. High frequency power (3750 Hz) is supplied to the motor, which runs at 75,000 RPM. The system utilizes a novel flash intercooler between the compressor stages.
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