Method of freezing liquid material in which agglomeration is inh

Details Method of freezing liquid material in which agglomeration is inh Method of freezing liquid material in which agglomeration is inh

1976-11-12

1978-03-07

Wayner, William E.

Refrigeration

Processes

Congealing flowable material, e.g., ice making

21 54R, 21102R, 239 3, 361228, F25C 100

Patent

active

040772276

ABSTRACT:
The liquid material to be frozen is separated into successive drops, each of which is subjected to an electric field of sufficient strength so as to induce on each drop an electric charge, the charges all being of the same polarity. The charged drops are sequentially directed at a controlled rate onto the surface of a cryogenic liquid where they momentarily float while being changed to a solid frozen state. During this interval the electric charges, being of like polarity, produce repulsive forces in accordance with Coulomb's Law which keep the drops apart so that they freeze and sink as individual pellets. The lack of agglomeration enables the pellets to be more rapidly and uniformly frozen and more rapidly and uniformly thawed for use at a later time. In this way, substances vulnerable to deterioration can be preserved for prolonged periods.

REFERENCES:
patent: 2809128 (1957-10-01), Miller
patent: 2875588 (1959-03-01), Berger
patent: 3024117 (1962-03-01), Barlow
patent: 3049092 (1962-08-01), Sedlacsik
patent: 3162019 (1964-12-01), Porter et al.
patent: 3335322 (1967-08-01), Epstein et al.
patent: 3927877 (1975-12-01), Terajima
patent: 4004733 (1977-01-01), Law

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