Centrifugal rotor having flow partition

Details Centrifugal rotor having flow partition Centrifugal rotor having flow partition

1991-04-01

1992-12-22

Jones, W. Gary

Liquid purification or separation

Processes

Separating

210745, 210 95, 2101981, 2103801, 210513, 422 64, 422 72, 422101, 422102, 436 45, 436 63, 436177, 436180, G01N 128, B04B 512, B01D 2126

Patent

active

051731932

ABSTRACT:
The present invention provides a centrifugal rotor which measures and delivers a predetermined volume of fluid to a receiving chamber in the rotor. The rotor comprises a bulk fluid chamber containing a bulk amount of fluid and a metering chamber which has a predetermined volume. The bulk fluid flowing into the metering chamber fills the chamber and excess fluid flows out into an overflow chamber. Thus, a predetermined volume is obtained. This volume is delivered to the receiving chamber through an exit duct which prevents flow at the rotational speed required to fill the metering chamber but allows flow at a second, higher rotational speed. The exit duct is typically a capillary in which capillary forces prevent flow until the rotational speed is increased.

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patent: 4689203 (1987-08-01), Kaartinen et al.
patent: 4847205 (1989-07-01), Burtis et al.
patent: 4894204 (1990-01-01), Cornut

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