US 12,220,712 B2
Centrifuge that adjusts the amount of supernatant liquid that is discharged
Masayuki Shiina, Ibaraki (JP); Hidetaka Osawa, Ibaraki (JP); Ken Asakura, Ibaraki (JP); and Hiroshi Hayasaka, Ibaraki (JP)
Assigned to Eppendorf Himac Technologies Co., Ltd., Ibaraki (JP)
Appl. No. 17/432,088
Filed by Eppendorf Himac Technologies Co., Ltd., Ibaraki (JP)
PCT Filed Apr. 24, 2020, PCT No. PCT/JP2020/017761
§ 371(c)(1), (2) Date Aug. 18, 2021,
PCT Pub. No. WO2020/261744, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-119351 (JP), filed on Jun. 27, 2019.
Prior Publication US 2022/0184639 A1, Jun. 16, 2022
Int. Cl. B04B 15/12 (2006.01); B04B 5/02 (2006.01); B04B 5/04 (2006.01); B04B 9/10 (2006.01); B04B 11/04 (2006.01)
CPC B04B 15/12 (2013.01) [B04B 5/02 (2013.01); B04B 5/0421 (2013.01); B04B 9/10 (2013.01); B04B 11/04 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A centrifuge, comprising:
a motor;
a rotor that is connected to a drive shaft of the motor and rotated by the motor;
a plurality of test tube holders that are arranged side by side in a circumferential direction of the rotor and are rotatable in a radial direction by a centrifugal force generated by the rotation of the rotor;
a cleaning liquid distribution element that is held in the rotor and supplies a cleaning liquid into a plurality of test tubes held by the test tube holders;
a holding part capable of preventing the rotation of the test tube holders; and
a control device for controlling rotation of the motor and operation of the holding part,
wherein, the control device performs the following steps: a cleaning liquid injection step of injecting the cleaning liquid into the test tubes by the cleaning liquid distribution element during the rotation of the rotor; a centrifuging step of rotating the test tube holders by the centrifugal force generated by the rotation of the rotor; and a supernatant discharging step of rotating the rotor in a state in which the test tube holders are held by the holding part and discharging the supernatant of the cleaning liquid from the test tubes, and
in the supernatant discharging step, during the rotation of the rotor, the test tube holders are made to swing by releasing the test tube holders held by the holding part from the holding state,
wherein a remaining amount of the cleaning liquid in the test tubes is adjusted according to a timing for releasing from the holding state.