Centrifuge with compressor motor feedback control device
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United States of America Patent
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-
Jun 28, 2016
Grant Date -
Oct 18, 2012
app pub date -
Apr 13, 2012
filing date -
Apr 15, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A centrifuge including: a rotor configured to be driven by a motor and to hold a sample, a centrifuge inverter, a chamber accommodating the rotor, a temperature sensor configured to detect the temperature of the chamber, a cooling machine configured to cool the chamber and including a compressor, a compressor inverter, a compressor motor configured to be controlled in a variable speed and a control device, wherein the control device carries out a feedback control of the compressor motor based on a preset temperature and a detected temperature of the temperature sensor when the rotation number of the compressor motor is larger than a predetermined rotation number, and the control device carries out an intermittent control for turning ON-OFF the cooling function of the compressor when the rotation number of the compressor motor is smaller than a predetermined rotation number.
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