Brushless DC motor driven cryogenic refrigeration system
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United States of America Patent
Stats
-
Dec 22, 1981
Grant Date -
N/A
app pub date -
Oct 14, 1980
filing date -
Oct 14, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A portable cryogenic helium-filled refrigeration system includes a cold finger evaporator, a compressor connected to the cold finger, a brushless DC motor connected to drive the compressor, and an electronic circuit for switching the stator-armature winding currents of the motor. The motor and compressor and the electronic circuit are all enclosed within a common housing which is charged with helium gas refrigerant under pressure.
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Cited Art Landscape
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