Apparatus for maintaining liquid temperature at a constant level

Details Apparatus for maintaining liquid temperature at a constant level Apparatus for maintaining liquid temperature at a constant level

1989-07-06

1991-01-15

Ford, John

Heat exchange

Movable heating or cooling surface

Rotary drum

165 30, 165 34, 165 36, 165 35, 165 63, 165 64, 62185, 62201, 62434, 62435, F25B 2900

Patent

active

049846280

ABSTRACT:
An apparatus for maintaining liquid temperature at a constant level comprises a reaction vessel for containing liquid, a cooling device connected with the reaction vessel for cooling the liquid, a heating device connected with the cooling device for heating the liquid cooled by the cooling device, a circulating device for circulating the liquid through and among the reaction vessel, the cooling device and the heating device, a temperature detecting device for detecting the temperature of the liquid heated by the heating device, a heat exchange rate control device for controlling the heat exchange rate between the cooling device and the liquid, and a control device for controlling the heating device and the heat exchange rate control device based on a control state of the apparatus and on the temperature difference between the detected temperature and a desired temperature.

REFERENCES:
patent: 3047274 (1962-07-01), Wilson
patent: 3227207 (1966-01-01), Litman
patent: 3229754 (1966-01-01), Hoag
patent: 3370454 (1968-02-01), Flores
patent: 4072181 (1978-02-01), Kostura et al.
patent: 4483823 (1984-11-01), Umetsu et al.
patent: 4526012 (1985-07-01), Chigira
patent: 4729424 (1988-03-01), Mizuno et al.
patent: 4784213 (1988-11-01), Eager et al.
patent: 4798242 (1989-01-01), Kito et al.

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