Apparatus for heat treatment

Foods and beverages: apparatus – Subjecting food to an enclosed modified atmosphere – Including means to influence movement of gas within enclosure

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Details

34191, 99474, 99483, 99517, 165108, A23B 700, A23N 1200, F26B 300, F26B 2106

Patent

active

044781415

ABSTRACT:
An apparatus for heat treatment of food products, in the form of a product bed consisting of solid particles, includes a container with a perforated bottom for the product bed. Gas is adapted to be supplied to the product bed in the container of this apparatus generally from below upwards through the perforated bottom at such a velocity that the product bed will form a fluidized bed. The gas, which is caused to circulate in the apparatus by means of a fan and to flow through the container as well as through a heat exchanger, is adapted to pulsate through the product bed in the container. According to the invention the apparatus is provided with a conduit passing by the container and being situated before the container with the perforated bottom, as counted in the flow direction, said conduit being provided with a rotatable damper which is adapted during its rotation to raise and lower the pressure under the perforated bottom for the pulsation of the gas through the product bed. The air from the container as well as from the conduit is adapted to pass the heat exchanger and the fan so that the fan can constantly operate at full capacity and the heat exchanger at full power.

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