Refrigeration – Processes – Congealing flowable material – e.g. – ice making
Patent
1982-12-21
1985-04-23
Sever, Frank
Refrigeration
Processes
Congealing flowable material, e.g., ice making
62 74, 62346, 62347, F25C 712
Patent
active
045121605
ABSTRACT:
A machine for making ice flakes by freezing sea or fresh water, comprises a fixed central core and a plurality of fixed pipes surrounding the core for containing a circulating refrigerant. A hollow rotatable cylindrical drum coaxial with the core surrounds the pipes; and an anti-freeze liquid freezing lower than water substantially fills the space between the core and the drum. A spray manifold for water to be frozen extends horizontally full length of the drum and feeds a horizontal series of spaced spray nozzles that spray the water on the drum. The sprayed water then moves downwardly with the drum and then upwardly and then downwardly again; but before reaching the region of the nozzles, that is, shortly before completing one full revolution, a knife that rides on the surface of the drum scrapes the ice flakes off the drum. The knife extends full length of the drum and is downwardly inclined away from the drum and extends outside the housing for the machine, thereby to serve as a chute to direct the ice flakes from the surface of the drum to a point outside the housing. The knife blade is mounted for vertical swinging movement about a horizontal axis parallel to the axis of the drum and is spring-urged against the drum. A supply chamber for water to be frozen, which serves also to collect water falling from the drum, is subdivided by vertical baffles having openings through their lower portion by which the subdivisions intercommunicate.
REFERENCES:
patent: 491104 (1893-02-01), Hart
patent: 1931347 (1933-10-01), Gay
patent: 3494144 (1970-02-01), Schill
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