Refrigeration – Automatic control – Solidified gas
Patent
1975-07-14
1977-04-05
Caposseia, Ronald C.
Refrigeration
Automatic control
Solidified gas
62330, 62379, 141 82, 141284, 236 15BC, F25D 312
Patent
active
040154408
ABSTRACT:
Apparatus for providing an expendable refrigerant which is emitted from a snow horn at a low velocity thereby enabling snow agglomeration at a close proximity to the horn exit and accurately delivering a charge of snow with minimum vapor loss. The desired snow is produced by introduction of the relatively warm liquid refrigerant into an insulated compartment and in heat exchange relation with a tube therein having a plurality of length/diameter ratios. The liquid refrigerant is effective to warm the tube walls and results in a slight cooling of such liquid which is then passed to a subcooler and returned to the tube inlet for expansion in several stages therein to form the snow. The product snow is emitted from this horn at a relatively low velocity and may be accurately directed into cavities of such products as eviscerated fowl. In automated systems, a plurality of horns may be selectively operated to inject snow into a plurality of food products or alternately, such horns may be operated intermittently to deposit a blanket of snow over food products to be chilled or a continuous ribbon of snow atop products on a moving conveyor.
REFERENCES:
patent: 1818816 (1931-08-01), Rufener et al.
patent: 2165908 (1939-07-01), Sparling et al.
patent: 2982319 (1962-05-01), Magnuson
patent: 3492829 (1970-02-01), Stanford, Jr.
Minard Michael E.
Ozmec Gordon J.
Pietrucha Victor F.
Airco, Inc.
Bopp Edmund W.
Caposseia Ronald C.
Rae David L.
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