Apparatus for controlling temperature of an extruder screw

Details Apparatus for controlling temperature of an extruder screw Apparatus for controlling temperature of an extruder screw

1974-03-08

1976-03-30

Myhre, Charles J.

Heat exchange

Movable heating or cooling surface

Hollow screw type impeller

259191, 425378R, F28F 506

Patent

active

039468038

ABSTRACT:
The temperature of an extruder screw having an axial bore therein is controlled by providing a closed temperature control system within the screw which is in heat transfer relationship with a second temperature control system through which is circulated a cooling medium from an outside source. The quantity of outside cooling medium may be monitored to control the closed temperature control system. The apparatus for carrying out this process comprises a cooling medium retained within the screw and a heat exchanger extending into the cooling medium. A second cooling medium from an outside source is circulated through the heat exchanger so that heat is transmitted from the closed circuit cooling medium to the open circuit cooling medium.

REFERENCES:
patent: 1902295 (1933-03-01), Shook
patent: 2653348 (1953-09-01), Elgin et al.
patent: 2702410 (1955-02-01), Brown
patent: 3007198 (1961-11-01), Colwell et al.
patent: 3310836 (1967-03-01), Nichols
patent: 3738420 (1973-06-01), Poux et al.

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