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US 2014/0251886 A1Published application
Mixer for insertion into a rotor of a centrifuge
AssigneeHahn-Schickard-Gesellschaft fuer angewandte Forschung e.V.
InventorsNils PAUST, Felix VON STETTEN
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Abstract
A mixer for insertion into a rotor of a centrifuge has a mixing trough and an obstacle device with at least one obstacle. The at least one obstacle is configured in order to influence the flow of a liquid present in the mixing trough. In response to a rotation of the rotor, with a specified incorporation of the mixer in a holder of the rotor, a spacing between at least one wall section of the mixing trough and the obstacle device is variable such that the liquid present in the mixing trough flows around the obstacle of the obstacle device.
Claims23
A mixing device comprising:
- a centrifuge including a rotor;
- and
- a mixer inserted into the rotor of the centrifuge, the mixer including:
- a mixing trough;
- an obstacle device including at least one obstacle arranged to influence a flow of a liquid present in the mixing trough;
- and
- a restorer arranged to generate a restoring force that acts in an opposite direction of at least one component of a centrifugal force generated by a rotation of the rotor;
- wherein
- in response to the rotation of the rotor, a spacing between at least one wall section of the mixing trough and the obstacle device is variable such that a liquid that is present in the mixing trough flows around the at least one obstacle of the obstacle device;
- in a first phase and at a first angular velocity of the rotor, a first value of the component of the centrifugal force acting in an opposite direction of the restoring force is greater than a value of the restoring force;
- in a second phase and at a second angular velocity of the rotor, a second value of the component of the centrifugal force acting in the opposite direction of the restoring force is less than the value of the restoring force;
- a first spacing between the at least one wall section of the mixing trough and the obstacle device is greater in the first phase than a second spacing between the at least one wall section of the mixing trough and the obstacle device in the second phase;
- in the first phase, the liquid that is present in the mixing trough at least partially flows around the at least one obstacle of the obstacle device in a first direction;
- and
- in the second phase, the liquid that is present in the mixing trough at least partially flows around the at least one obstacle device in a second direction that is opposite to the first direction.
12 more elements
A mixer for insertion into a rotor of a centrifuge, the mixer comprising:
- a mixing trough;
- an obstacle device with at least one obstacle arranged to influence a flow of a liquid present in the mixing trough;
- a cylinder-shaped housing with a cover side and a base side located opposite to the cover side;
- and
- a plurality of guide springs arranged on an outer side of the housing, wherein
- in response to rotation of the rotor, a spacing between at least one wall section of the mixing trough and the obstacle device is variable such that a liquid that is present in the mixing trough flows around the at least one obstacle of the obstacle device;
- the mixing trough and the obstacle device are arranged inside a cavity of the cylinder-shaped housing;
- the guide springs extend in a direction from the cover side to the base side and extend beyond the cover side in a direction away from the base side;
- and
- the guide springs include beveled ends in an end region that extends beyond the cover side.
7 more elements
A mixer for insertion into a rotor of a centrifuge, the mixer comprising:
- a mixing trough;
- an obstacle device with at least one obstacle arranged to influence a flow of a liquid present in the mixing trough;
- a cylinder-shaped housing with a cover side and a base side located opposite to the cover side;
- and
- at least one piercer arranged on the cover side of the housing;
- wherein
- in response to rotation of the rotor, a spacing between at least one wall section of the mixing trough and the obstacle device is variable such that a liquid that is present in the mixing trough flows around the at least one obstacle of the obstacle device;
- the mixing trough and the obstacle device are arranged inside a cavity of the cylinder-shaped housing;
- and
- the at least one piercer includes at least one fluid guide which fluidically couples a region outside of the housing with the cavity of the housing.
7 more elements
Dependencies are inferred from the claim text.