Refrigeration – Processes – Congealing flowable material – e.g. – ice making
Patent
1986-07-28
1987-08-18
Tapolcai, William E.
Refrigeration
Processes
Congealing flowable material, e.g., ice making
F25C 100
Patent
active
046868330
ABSTRACT:
A method of forming clathrate ice in a supercooled water-based liquid contained in a vessel is disclosed. Initially, an oscillator device is located in the liquid in the vessel. The oscillator device is then oscillated ultrasonically so that small crystals are formed in the liquid. These small crystals serve as seed crystals for ice formation in the liquid and thereby prevent supercooling of the liquid. Preferably, the oscillating device is controlled by a thermostat which initiates operation of the oscillator device when the temperature of the liquid is lowered to the freezing point. Thereafter, the operation of the oscillator device is terminated when ice is sensed in the liquid by an ice sensor.
REFERENCES:
patent: 1296741 (1919-03-01), Bester
patent: 2595968 (1952-05-01), McCoy
patent: 3224213 (1965-12-01), Hoyt, Jr.
"Ice Physics", Peter J. Hobbs, 1974, pp. 500-501.
"Marks' Standard Handbook for Mechanical Engineers", Eighth Edition, pp. 12-141 and 142.
Gorski Anthony J.
Hino Toshiyuki
Fisher Robert J.
Hightower Judson R.
Tapolcai William E.
The United States of America as represented by the United State
Weinberger James W.
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