Centrifugal evaporator-concentrator for concentrating specimens

Details Centrifugal evaporator-concentrator for concentrating specimens Centrifugal evaporator-concentrator for concentrating specimens

1991-11-12

1993-06-08

Bascomb, Jr., Wilbur

Concentrating evaporators

Film type

Centrifugal

159 161, 159DIG16, 202205, 203DIG18, 422 72, 422101, 494 18, 494 26, 494 37, 494 61, B01D 100

Patent

active

052175723

ABSTRACT:
The centrifugal evaporator-concentrator includes a central tubular pivot (18) surmounted by a nozzle (35) and constituting the pivot axis of a rotor (9) rotating in a vessel (8) closed by a cover (11). With the rotor rotating in the partial vacuum created by a vacuum pump (33), a small quantity of gas or air is temporarily and periodically admitted into the vessel, this gas being heated by a heating resistor (38) inside the vessel for the purpose of heating by conduction the specimens to be concentrated and of accelerating the rate of evaporation.

REFERENCES:
patent: 529663 (1894-11-01), Naylor
patent: 3274756 (1966-09-01), Stern
patent: 3304990 (1967-02-01), Ontko et al.
patent: 3327938 (1967-06-01), Stallmann
patent: 4129419 (1978-12-01), Hermann
patent: 4226669 (1980-10-01), Vilardi
patent: 4244513 (1981-01-01), Fayer et al.
patent: 4254943 (1981-03-01), Bjorkman
patent: 4693702 (1987-09-01), Carson et al.
patent: 4857811 (1989-08-01), Barrett et al.
patent: 5137604 (1992-08-01), Meeks et al.

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