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US 2010/0075823 A1Published application
Centrifuge
AssigneeHitachi Koki Co., Ltd.
InventorsHiroatsu TOI, Eiichi Fukuhara
Life of this patent
Estimating the term…
Abstract
A centrifuge includes a rotor, a rotation shaft which has a through-hole communicated with an interior of the rotor, a face seal which slidingly contacts an end of the rotation shaft and has a path communicated with the through-hole of the rotation shaft, a wall member which accommodates the face seal, a sample transfer unit which transfers a sample through the rotor, and a coolant circulation unit which circulates a coolant to the wall member. The sample transfer unit transfers the sample by pressure so that a pressure of the sample flowing through a portion where the rotation shaft and the face seal slidingly contact with each other is higher than a pressure of the coolant flowing through the wall member.
Claims18
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.
8 more elements
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 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 wall member which accommodates the face seal;
- 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 second path communicated with the interior of the rotor;
- a sample transfer unit which supplies the sample from one of the first path and the second path into the rotor, and discharges the sample from the rotor to the other of the first path and the second path;
- and
- a coolant circulation unit which circulates a coolant to the 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 face seal slidingly contact with each other is higher than a pressure of the coolant flowing through the wall member.
6 more elements
A centrifuge comprising:
- a hollow rotor which separates a sample thereinside;
- a rotation shaft which is provided at an 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 face seal which slidingly contacts an end of the rotation shaft, and has a path communicated with the through-hole of the rotation shaft;
- a wall member which accommodates the face seal;
- a sample transfer unit which supplies the sample from the path into the rotor, or discharges the sample from the rotor to the path;
- and
- a coolant circulation unit which circulates a coolant to the 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 rotation shaft and the face seal slidingly contact with each other is higher than a pressure of the coolant flowing through the wall member.
5 more elements
Dependencies are inferred from the claim text.