Automatic ice maker of refrigerators

Details Automatic ice maker of refrigerators Automatic ice maker of refrigerators

1991-04-26

1993-01-12

Tapolcai, William E.

Refrigeration

Means producing shaped or modified congealed product

Heat absorber with product remover

62 68, F25C 120

Patent

active

051779803

ABSTRACT:
In an automatic ice maker of a refrigerator, water is supplied into an ice tray disposed in an ice making compartment of the refrigerator. The water in the ice tray is frozen and then, the ice tray is turned with a twisting motion by a drive mechanism including a motor so that ice cubes are removed from the ice tray. Vibration is applied to the ice tray by an electromagnet excited by a pulse current during a water freezing step so that escape of air bubbles out of the water is promoted. A cover covers an upper open end of the ice tray during the water freezing step so that freezing is retarded at the water surface side as compared with the ice tray bottom side. Alternatively, a heater is employed for the cover.

REFERENCES:
patent: 2971346 (1961-02-01), Frei
patent: 3224213 (1965-12-01), Hoyt, Jr.
patent: 3318105 (1967-05-01), Burroughs et al.
patent: 3321932 (1967-05-01), Orphey, Jr.
patent: 3449921 (1969-06-01), Connors
patent: 3775992 (1973-12-01), Bright
patent: 4852359 (1989-08-01), Mazzotte

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