Sigma Laborzentrifugen Gmbh

Heraeus Sepatech Gmbh

Eckhard Todteberg

Matthias Bittner

Ekkehard Grimm

A rotor body () for a laboratory centrifuge includes a rotor hub () which is inserted in a central opening and on the outside of which, at least one helically curve continuous groove () runs so as to form a transport facility for cooling air. The cooling air is effective in the direction of the axis () of the rotor hub () between the upper side () and the underside () of the rotor (). In this manner, a cooling airstream which runs axially through the rotor () and undergoes direct thermal exchange with the rotor () and the mixtures to be treated in the laboratory centrifuge can be realized. No additional installation volume is required for this measure and equalization of the temperature of the rotor and the housing accommodating the rotor can be achieved.

Rotor for a laboratory centrifuge with rotor hub cooling means

A centrifuge is known which has a rotor bearing a plurality of swinging buckets mounted each on two pivots and sector-shaped inserts secured in place on the axis of the rotor shaft. The inserts have substantially vertical, radially disposed supporting walls which receive the thrust of the pivots and their outer part serves as a centrifugal force-supporting surface in the operating state. Two pivots are associated with each sector-shaped insert. In order to construct a centrifuge with swinging buckets such that it will be distinguished by its simple construction and will not require adjustment of the individual components with respect to one another, a pivot is disposed on each of the two supporting walls of the insert with their free ends confronting one another.

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Osterode, Germany

Eckhard Todteberg