F - Mech Eng,Light,Heat,Weapons – 28 – C
Patent
F - Mech Eng,Light,Heat,Weapons
28
C
99/191
F28C 3/12 (2006.01) A23L 3/16 (2006.01) A23L 3/36 (2006.01) A23L 3/50 (2006.01) F25D 17/08 (2006.01) F28C 3/16 (2006.01)
Patent
CA 1193134
Abstract of the Disclosure 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 pro- duct 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 appa- ratus 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 perfo- rated 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.
422488
Andersson Gustaf A.
Svensson Sten-Eric
Fetherstonhaugh & Co.
Frigoscandia Contracting Ab
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