Abstract: A rotor body (3) for a laboratory centrifuge includes a rotor hub (14) which is inserted in a central opening and on the outside of which, at least one helically curve continuous groove (27) runs so as to form a transport facility for cooling air. The cooling air is effective in the direction of the axis (2) of the rotor hub (14) between the upper side (23) and the underside (22) of the rotor (1). In this manner, a cooling airstream which runs axially through the rotor (1) and undergoes direct thermal exchange with the rotor (1) 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.

Abstract: A rotor body (3) for a laboratory centrifuge includes a rotor hub (14) which is inserted in a central opening and on the outside of which, at least one helically curve continuous groove (27) runs so as to form a transport facility for cooling air. The cooling air is effective in the direction of the axis (2) of the rotor hub (14) between the upper side (23) and the underside (22) of the rotor (1). In this manner, a cooling airstream which runs axially through the rotor (1) and undergoes direct thermal exchange with the rotor (1) 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.

Abstract: A control device for controlling operating parameters and control functions for the operation of a laboratory centrifuge. The control device has a panel for displaying a visual representation of at least a part of the operating parameters and control functions such as speed of rotation, acceleration temperature, etc. A control switch sets the operating parameters and control functions, this switch being capable of at least two independent movements—a first movement including a rotation about an axis, the second one a displacement along the axis. One of these switch movement, e.g., rotation, provides for the selection and change in setting of one of the operating parameters and control functions, and another of the switch movement, e.g., displacement, provides for acceptance of the selection and acceptance of the setting.

Abstract: A laboratory centrifuge, whose centrifuge rotor is mounted in a bowl (6) which can be brought to the correct temperature and which is set up in particular for the setting of temperatures below the ambient temperature, is provided with a drive means comprising at least one electric motor (1) which is equipped with standstill heating means to maintain the temperature within the motor above a dew point temperature independent of a material-specific cooling temperature within the bowl (6). The standstill heating is provided by the winding system of the stator and/or of the rotor of the electric motor (1) and is connected to a control device (21). The formation of condensation within the motor and the consequential adverse effects arising from this, such as for example corrosion damage to electrical contacts as well as to the bearings of the motor shaft, can be avoided by this means. Also, no additional components are needed for the actual standstill heating.

Abstract: 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.