Unitary ice maker with fresh food compartment and control system

Details Unitary ice maker with fresh food compartment and control system Unitary ice maker with fresh food compartment and control system

1988-10-24

1989-10-10

Wayner, William E.

Refrigeration

Automatic control

By congealed removable product condition

62189, 62233, 13762411, 25112904, F25C 100

Patent

active

048723177

ABSTRACT:
An ice maker includes an interior volume containing a freezer compartment and a fresh food compartment. The freezer compartment houses an automatic ice making unit, including an ice mold, a water solenoid valve for admitting water into the ice mold, and a first thermistor attached to the ice mold. A second thermistor is disposed in the fresh food compartment. A microprocessor based control unit monitors the first and second thermistors to determine when to initiate ice harvest cycles. Ice harvest cycles are delayed, if necessary, to maintain the fresh food compartment below a setpoint temperature. The control unit also includes sensing means for determining if the water solenoid valve is energized. The solenoid is monitored, and if it remains energized for a prolonged period, then power to the automatic ice making unit is removed to prevent excessive water spillage.

REFERENCES:
patent: 2801526 (1957-08-01), Solley, Jr.
patent: 3225559 (1965-12-01), Fischer
patent: 3280578 (1966-10-01), Linstromberg
patent: 3327493 (1967-06-01), Jacobus
patent: 3788089 (1974-01-01), Graves
patent: 4191025 (1980-03-01), Webb
patent: 4325223 (1982-04-01), Cantley
patent: 4589435 (1986-05-01), Aldrich
patent: 4706703 (1987-11-01), Kawasaki
patent: 4774814 (1988-10-01), Yingst et al.

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