Patent ID: 8038592

Claim:
A centrifuge comprising: a hollow rotor which separates a sample thereinside; a first rotation shaft which is provided at one end of the rotor so as to be coaxial with a rotation axis of the rotor, and has a through-hole communicated with an interior of the rotor; a second rotation shaft which is provided at the other end of the rotor so as to be coaxial with the rotation axis of the rotor, and has a through-hole communicated with the interior of the rotor; a first face seal which slidingly contacts an end of the first rotation shaft, and has a first path communicated with the through-hole of the first rotation shaft; a first wall member which accommodates the first face seal; a second face seal which slidingly contacts an end of the second rotation shaft, and has a second path communicated with the through-hole of the second rotation shaft; a second wall member which accommodates the second face seal; a sample transfer unit which supplies the sample from the first path into the rotor, and discharges the sample from the rotor to the second path; and a coolant circulation unit which circulates a coolant to the first wall member and the second wall member, and wherein the sample transfer unit transfers the sample by pressure so that a pressure of the sample flowing through a portion where the first rotation shaft and the first face seal slidingly contact with each other is higher than a pressure of the coolant flowing through the first wall member, and a pressure of the sample flowing through a portion where the second rotation shaft and the second face seal slidingly contact with each other is higher than a pressure of the coolant flowing through the second wall member.