Patent ID: 9375730
Filing Date: 2016-06-28
CPC Classification: B04B

Claim Text:
1. A centrifuge comprising: a rotor configured to be driven by a motor and to hold a sample; a centrifuge inverter configured to supply power to drive the motor; 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 configured to supply power to the compressor; a compressor motor incorporated to the compressor and configured to be controlled in a variable speed by the power supplied from the compressor inverter; and a control device configured to control the centrifuge inverter and the compressor inverter based on set centrifuging operation conditions, 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 a 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 the predetermined rotation number.