Abstract: A refrigerated centrifuge system. The system includes at least one thermoelectric cooler which is operatively connected to a centrifuge chamber by an egress conduit and an ingress conduit. In one embodiment the egress conduit carries away from the centrifuge to the thermoelectric cooler warm air where it is cooled by the thermoelectric cooler. The cooled air then returns to the centrifuge. In another embodiment the warm air in the centrifuge is first passed through a liquid heat exchanger whereby the warmed air transfers heat to a liquid which then is pumped through an egress conduit to a thermoelectric cooler where the liquid is cooled. The cooled liquid is then pumped back to the liquid heat exchanger through an ingress conduit.

Abstract: A thermoelectric cooling design of the type having thermoelectric coolers. Provisions for a centrifuge chamber and improved heat dissipation from the thermoelectric coolers are provided. For improved thermal response, the refrigerated centrifuge chamber is provided with a motor driven fan to drive ambient air horizontally over a plurality of heat sinks mounted horizontally concentric with respect to the rotor of the centrifuge.

Abstract: A centrifuge chamber is provided with a plurality of thermoelectric cooling devices having heat sinks with fins mounted vertically concentric with respect to the rotor of the centrifuge between the centrifuge chamber and outer side walls of the housing. The top of the area defined by the housing is provided with a manifold cover for passage of cooling air emanating from a blower disposed in the cover. The cooling air passes through the manifold and then down through the fins to remove heat therefrom.

Abstract: A mounting arrangement for a rotor speed photosensor assembly includes a mounting ring fixedly attached to the stationary element of the centrifuge. The mounting ring has a cutout portion thereon which is adapted to receive a photosensor mounting board which carries the photosensor assembly. Adjustable mounting elements connect the photosensor mounting board to the mounting ring and permit the precise adjustment of the sensor with respect to the ring to thereby dispose the sensor in a predetermined optimal speed-sensing relationship with respect to the rotor.

Abstract: A centrifuge rotor is described which facilitates the preparation of cell dispersions on microscope slides. The rotor is bowl-like in configuration and defines an annular channel having plural circumferentially disposed septa. The septa provide plural separate regions each adapted to receive removable chambers. The outer wall in each region is flat to accommodate a microscope slide. Each chamber has an outlet orifice adapted to contact the microscope slide. A sample containing blood cells, for example, may be placed in each chamber and the cells centrifugally sedimented against the slide associated with the respective chambers. A gasket at the interface between each slide and its chamber prevents leakage of the sample and a conduit in each chamber permits removal of the supernatant fluid following cell sedimentation.

Abstract: A chamber block removably insertable into a centrifuge rotor of the type used for the preparation of cell dispersions on slides is characterized by a opening formed in the chamber block which, when closed, defines a supernatant collection receptacle within the block. A deflection baffle is disposed within the chamber block so that supernatant withdrawn through a suction conduit from the vicinity of the slide is deflected into the collection receptacle.

Abstract: A centrifuge rotor is described which facilitates the preparation of cell dispersions on microscope slides. The rotor is bowl-like in configuration and defines plural peripheral regions adapted to receive the slides and a removable sample chamber associated with each slide. Each chamber has an outlet adpated to contact its slide. A sample, containing blood cells, for example, may be placed in a chamber and the cells centrifugally sedimented against the slide associated therewith. Excess or unwanted fluid is removed from the chamber by applying a vacuum through a vacuum line and hollow drive shaft. Leaf springs maintain each chamber in position and the vacuum line in fluid contact with the chamber. The vacuum line conecting each chamber cooperates with its leaf spring such that if a chamber is missing, the leaf spring closes the vacuum line.