Refrigeration – Liquid contacting discrete commodity
Patent
1977-05-06
1979-06-05
Ostrager, Allen M.
Refrigeration
Liquid contacting discrete commodity
62384, 62386, F25D 1702, F25D 2502
Patent
active
041570189
ABSTRACT:
A system for advancing trays of foor or other material to be frozen or heated through a vertically oriented housing is provided with improved means for loading the trays at one end of the housing, causing incremental advancement of the trays and removing them from the other end of the housing. The device includes a removal drawer at the outlet end which, when closed, supports the stack of trays in the device. When the drawer is opened, the stack advances downwardly and the lowermost tray in the stack is removed from the bottom of the stack and is drawn outwardly with the drawer. During opening of the drawer, other means are employed to support the stack of trays after the stack has moved downwardly one tray increment. When the drawer is reclosed, the trays are again supported by the drawer. A cold (or hot) medium is introduced into the housing at a plurality of levels. The internal surfaces of the housing are arranged to cooperate with the trays and coolant or heat sources so that the articles in the tray are subjected to a zigzag reversed flow of the heat transfer medium as the trays are advanced incrementally downwardly through the device.
REFERENCES:
patent: 2474069 (1949-06-01), Silvera
patent: 3688518 (1972-09-01), Goltsos
Ostrager Allen M.
Teckton, Inc.
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