Refrigeration – Processes – Treating an article
Patent
1986-04-09
1987-10-20
Bennet, Henry A.
Refrigeration
Processes
Treating an article
62373, F25D 1304, F25D 1702
Patent
active
047005475
ABSTRACT:
A method is provided for killing and preserving fish in a fresh state or a two stage procedure. In the primary or instant cooling stage, fish are killed instantly by the shock of emersion in a rapid cooling fluid. This fluid subjects the surface layer of each fish to a temperature below that at which they will be stored. In the secondary or storage stage, individual fish are either passively cooled on the inside by their low temperature surface layer, or else they are cooled inside and out by external means. An apparatus is also provided for this method and is comprised of the following: a rapid cooling hopper to deliver fish into the system, a primary rapid cooling tank to instantly kill fish, and a device connected to the primary rapid cooling tank to discharge fish to the secondary stage cold storage tank. Live fish are introduced to the system through the rapid cooling hopper, killed by the shock of instant cooling in the primary rapid cooling tank, and subsequently delivered to the secondary stage cold storage tank by the discharge device.
REFERENCES:
patent: 4341091 (1982-07-01), Minter
patent: 4442786 (1984-04-01), Conners
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