Imperforate bowl: centrifugal separators – Rotatable bowl – Material of bowl wall
Patent
1981-07-16
1983-06-07
Jenkins, Robert W.
Imperforate bowl: centrifugal separators
Rotatable bowl
Material of bowl wall
422101, 494 43, 494 45, 494 66, B04B 1100
Patent
active
043867308
ABSTRACT:
A centrifuge assembly useful for two stage blood platelet separation by counterflow comprising a channeled rotor assembly and a fluid container disposed in the channel, whereby the centrifugal separation effects in the fluid container are determined by the geometry of the channel in thr rotor. The fluid container is preferably formed from semirigid plastic material and is considered a disposable item, discarded after a single use. The rotor assembly preferably includes a removable filler piece or center piece formed from a single piece of material and having therein an open-topped channel having dimensions appropriate to receive the semirigid container, which is suitably curved and placed in the channel. Fluid connections are provided from a multi-chambered cavity attached to the ends of the container to an axially located multichannel rotating seal. The channel is divided into two distinct circular portions, the first portion of the channel being spiral-like and the second portion having a plurality of radiuses, each measured from a different center. The spiral increases radially outward from its juncture of the first stage and the second stage. A transition section connects the two portions, and forms a spillway between the two portions.
REFERENCES:
patent: 3858796 (1975-01-01), Unger
patent: 4010894 (1977-03-01), Kellogg
patent: 4094461 (1978-06-01), Kellogg
International Business Machines - Corporation
Jenkins Robert W.
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