Abstract:
Die Erfindung betrifft eine Antriebsanordnung für eine Rotationskörpereinrichtung umfassend eine drehbar in Bezug zu einer Drehachse gehaltene Welle, ein erstes Lagermodul und ein zweites Lagermodul mit jeweils wenigstens einem elastischen Stützelement zum Stützen der Welle, einen Elektromotor mit einem Stator und einen drehbar zu dem Stator vorgesehenen Rotor, welcher drehfest mit der Welle verbunden ist, eine elektrisch ansteuerbare Stabilisierungseinrichtung, welche derart auf den Rotor einwirkt, dass während der Rotation auf die Welle und den Rotor einwirkenden Störkräften entgegengewirkt wird, ein den Stator wenigstens abschnittsweise umgreifendes Gehäuse und eine Sensoreinheit zum Erfassen einer Verdrehung der Welle mit dem daran gehaltenen Stator, wobei wenigstens das erste Lagermodul einen mittels des wenigstens einen elastischen Stützelements nicht drehbar in Bezug zu der Drehachse gehaltenen Massekörper vorsieht und dass die Welle über ein Lager des ersten Lagermoduls drehbar an dem Massekörper abgestützt ist.
Abstract:
A system and method for non-contact specimen container characterization includes a processor, and a specimen container diameter sensor, and a specimen container length sensor. The non-contact specimen container can also include a cap color sensor. The sensors are located in a fixed position relative to a conveyor for transporting a plurality of specimen containers. Another embodiment is directed to a system and method for detecting centrifuge imbalance along multiple axes. First, second and third comparators compare an accelerometer output corresponding to x-, y- and z- axes with reference voltage levels. The outputs are used to determine whether to discontinue operation of the centrifuge. The outputs can also be used to generate alerts.
Abstract:
An analytical laboratory system and method for processing samples is disclosed. The system includes a manager unit, as well as an aliquotter unit and a centrifuge unit.
Abstract:
A system and method for non-contact specimen container characterization includes a processor, and a specimen container diameter sensor, and a specimen container length sensor. The non-contact specimen container can also include a cap color sensor. The sensors are located in a fixed position relative to a conveyor for transporting a plurality of specimen containers. Another embodiment is directed to a system and method for detecting centrifuge imbalance along multiple axes. First, second and third comparators compare an accelerometer output corresponding to x-, y- and z- axes with reference voltage levels. The outputs are used to determine whether to discontinue operation of the centrifuge. The outputs can also be used to generate alerts.
Abstract:
Eine Zentrifuge, die folgendes aufweist: a. eine drehbare Schleudertrommel (2) und eine Zulaufleitung für ein zu verarbeitendes Schleudergut, b. eine Antriebsspindel (3) für die Schleudertrommel, die mittels wenigstens einer Lagerung drehbar in einem Gehäuse (7) gelagert ist, welches vorzugsweise elastisch an einem Maschinengestell (10) abgestützt ist, c. eine Antriebsvorrichtung mit einem Antriebsmotor, der dazu ausgelegt ist, die Antriebsspindel (3) zu drehen, d. ein Schmiermittelsystem zur Schmierung der Lagerung, das dazu ausgelegt ist, Schmiermittel aus einem Schmiermittel-Vorratsbehälter (12) durch einen Schmiermittelkanal (14) in den Bereich der Lagerung zu fördern, e. wobei zum Fördern des Schmiermittels wenigstens eine dem Schmiermittel-Vorratsbehälter (12) nachgeordnete Eänspritzvorrichtung (13) vorgesehen ist, die zur Abgabe von (geringen) Schmiermittelmengen in zeitlich voneinander getrennten Impulsen in den Bereich der Lagerung ausgelegt ist.
Abstract:
In a method of rapidly lowering the rotary speed of a rotating rotor body in a centrifugal separator the lowering of the rotary speed is initiated, when a disturbing unbalance or vibrations have occurred. A space between the rotor body and a stationary casing which surrounds the rotor body is supplied with foam or with an aerosol of a liquid in a gas, when unbalance or vibrations over a certain level have occurred. The rotor body is retarded by the friction, which is obtained between the rotor body, the foam or aerosol and the casing.In an arrangement to lower the rotary speed of a rotating rotor body in a centrifugal separator the lowering is initiated when a disturbing unbalance or disturbing vibrations has occurred. Means are arranged at a certain unbalance or certain vibration level to activate a foam generating device or a device that creates an aerosol for the purpose of filling a space between the rotor body and a casing which surrounds the same with foam or aerosol.
Abstract:
A method of controlling the evaporation of liquid in samples in an evaporating centrifuge, by monitoring the centrifugal force exerted on a sample holder containing a liquid sample having solid material dissolved or otherwise mixed therein. The centrifugal force is determined using a load cell (19), a strain gauge or, where relative movement between sample holder (4) and rotor (54) is permitted albeit with resilient restraining means, the centrifugal force signal may be generated by a position sensing transducer. The speed of rotation is sensed by a further transducer and both force and speed signals are conveyed to a computing means (54) programmed to generate a process control signal for controlling the evaporation process therefrom. A preferred method of control involves determining the rate of change of weight with time and terminating the evaporation process when the rate of change drops to zero. Evaporation is assisted by heating the samples and the process control signals determine not only the speed of rotation, but also the heating of the samples. A weight signal can be computed from the force signal by reference to the speed signal which is proportional to the centrifugal force acting on the sample holder and therefore the sample. A signal indicative of the weight of the sample itself can be computed by deducting from the combined weight of the holder and sample, a signal representing the weight of the sample holder itself. Different liquids evaporate at different rates and imbalance can occur as between different samples located around a rotor. Imbalance forces caused by differential evaporation rates may be reduced by means of a raceway (22) mounted on the rotor, or spindle driving rotor, which is incompletely filled with ball bearings (24) which in rotation distribute themselves around the raceway to counteract the imbalance forces.
Abstract:
Blood processing systems and methods are disclosed. A processing chamber (14) rotating on a rotating element includes a first compartment (38) and a second compartment (40). Blood is conveyed into the first compartment (38) for centrifugal separation into components. A liquid free of blood occupies the second compartment (40) to counter-balance the first compartment (38) during rotation on the rotating element. In one embodiment, the second compartment (40) is served by a single fluid access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment (40). While vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment (40) through the single access, thereby priming the second compartment (40) for use.