Refrigeration – With indicator or tester – Operatively correlated with automatic control
Patent
1988-03-28
1990-07-03
Wayner, William E.
Refrigeration
With indicator or tester
Operatively correlated with automatic control
62138, 62348, F25C 100
Patent
active
049380303
ABSTRACT:
An ice cube makes has a generally upright gridded evaporator, a hot gas defrost for harvest of cubes, a storage bin below the evaporator, a hinged cube and water curtain between the evaporator and the bin, a new and improved control for the freeze cycle, and a new and improved control for the harvest cycle. The freeze cycle control has a temperature sensor, on a backside of the evaporator, circuitry to count down a predetermined time after a predetermined plate temperature has been sensed, the circuit terminates the countdown if the plate temperature exceeds the predetermined temperature and restarts the countdown when the predetermined temperature is again reached, and the circuit switches the refrigeration from freeze to hot gas defrost when the countdown is completed for harvest of the ice cubes; the harvest control has an ice curtain sensor connected to the refrigeration control, and a lever between the ice curtain and the sensor, when the curtain is opened by ice cubes the sensor picks up the lever movement and the control switches the refrigeration from the defrost to the freeze cycle.
REFERENCES:
patent: 4238930 (1980-12-01), Hogan et al.
patent: 4341087 (1982-07-01), Van Steenburg, Jr.
patent: 4727729 (1988-03-01), Toya
Josten Marvin H.
Merrill Terry L.
Putter Robert
Schneider Kenneth W.
Kovar Henry C.
Schneider Metal Manufacturing Co.
Wayner William E.
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