Food or edible material: processes – compositions – and products – Direct application of electrical or wave energy to food... – Heating by electromagnetic wave
Patent
1980-03-27
1981-10-13
Golian, Joseph M.
Food or edible material: processes, compositions, and products
Direct application of electrical or wave energy to food...
Heating by electromagnetic wave
219 1055M, 426513, 426516, 426243, A23B 400
Patent
active
042948584
ABSTRACT:
An emulsion is stored in pressure containers and is ultimately forced from one container and then the other to a pump which pumps the emulsion against back pressure of the food product into a long Teflon tube of large diameter. The tube passes through cavities in plural microwave ovens and is cured by microwave energy from two magnetrons in each oven operating at about 2,450 megahertz and 1,000 watts each. The flow rate is controlled by the pump so that the food product remains in the microwave energy field for about 4 to 5 minutes whereupon it is fully cured. The continuously flowing food product in the tube is surrounded by a hot oil heat exchanger which heats the surface to about two to five hundred Fahrenheit, while the product is radially constrained and is under back pressure. The tube passes through a cooling heat exchanger immediately after the heater whereupon the surface is cooled to about 40.degree. Fahrenheit while radially constrained and under pressure, thus forming a smooth self-skin. Initial back pressure is assured by a plug which the food product forces through the tube until the tube is full to provide the autogenic back pressure. The back pressure provided by the resistance to flow of the moving mass and the frictional resistance of the product-tube innerface decreases as the product nears the end of the apparatus. At the end of the apparatus the cooled product is sliced and wrapped or cut in lengths to be sliced elsewhere.
REFERENCES:
patent: 3597228 (1971-08-01), Jeppson et al.
patent: 3700847 (1972-10-01), Rendek et al.
patent: 3889013 (1975-06-01), Moule
patent: 4113890 (1978-09-01), Long
patent: 4129768 (1978-12-01), Anderson
Golian Joseph M.
Wray James C.
Yeung George C.
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