Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1984-03-02
1986-11-11
Cline, William R.
Heat exchange
Movable heating or cooling surface
Rotary drum
165 34, 165100, 165 64, 425378R, 425144, 264 406, F25B 2900, F28F 2702, B30B 1534, B29C 4572
Patent
active
046216782
ABSTRACT:
Disclosed is heat exchange apparatus for controlling the temperature of a resin after leaving an extruder and prior to extrusion through a die in an extrusion process, comprising a heat exchanger having an inlet and outlet for an extruded heat-plastified resin and an inlet and an outlet for a heat exchange medium to be circulated in heat exchanging relationship with the extruded resin; a selective heater for receiving the heat exchange medium from the heat exchanger, the heater heating the heat exchange medium to a predetermined temperature during a start-up phase of the heat exchange device; a cooler adapted for receiving a portion of the heat exchange medium from the heater, the cooler including an inlet and an outlet for the heat exchange medium and an inlet and an outlet for a cooling medium to be circulated in heat exchanging relationship with the heat exchange medium; control means interposed between the heater and the cooler for selectively directing a portion of the heat exchange medium to said cooler in response to a sensed temperature condition and for directing the balance of the heat exchange medium to the heat exchanger; and a pump for circulating the heat exchange medium between the heat exchanger, the heater, and the cooler.
REFERENCES:
patent: 2670933 (1954-03-01), Bay
patent: 3583467 (1971-06-01), Bennett
patent: 3729064 (1973-04-01), Wolf et al.
patent: 3756312 (1973-09-01), Shah et al.
patent: 3891370 (1975-06-01), Giehler
patent: 3950118 (1976-04-01), Adair
patent: 4216253 (1980-08-01), Bonnebat et al.
Hahn Granville J.
Rutledge Raleigh N.
Searl Alonzo H.
Sommerman Walter E.
Cheairs M. Norwood
Cline William R.
Cosden Technology, Inc.
Ford John K.
Van Winkle Roy L.
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