Refrigeration – Processes – Congealing flowable material – e.g. – ice making
Patent
1988-11-14
1990-04-17
Tapolcai, William E.
Refrigeration
Processes
Congealing flowable material, e.g., ice making
62 74, 62347, 239 22, F25C 304
Patent
active
049169114
ABSTRACT:
A process and apparatus for producing snow which provide a stream of pressurized air and pressurized water; combine the air stream and the water stream to cool the water and provide a first stream of a mixture of the air and water; thereafter aspirate a portion of the air in a counter-flow direction from air into the first stream and mixing therewith, to form a second stream of a mixture of air and water, the second stream being coaxial with the first stream; and disperse the second stream into freezing temperature atmosphere to freeze the water in the second stream and produce snow. In the preferred embodiment, a central stream of water of pressure of at least 300 psig is combined with air of pressure no more than about 30 psig coaxially combined and creating the first mixture. Ice crystals are utilized as a nucleating agent to promote the freezing of water in the second stream.
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Duryea George R.
Holden Michael S.
Dendrite Associates, Inc.
Tapolcai William E.
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