Aseptic food processing apparatus and method

Details Aseptic food processing apparatus and method Aseptic food processing apparatus and method

B - Operations, Transporting

65

B

99/195, 99/21

B65B 55/14 (2006.01)

Patent

CA 1248810

ASEPTIC FOOD PROCESSING APPARATUS AND METHOD Abstract of the Disclosure A greatly improved aseptic processing apparatus and method for pumpable foods is pro- vided which gives accurate, uniform aseptic cook- ing conditions (e.g., time, temperature and pres- sure) while at the same time preserving the inte- grity of particulate in the food product. In preferred forms, the apparatus includes a recipro- cating piston food pump which generates a continu- ous product stream at a substantially constant nominal pressure. This stream is fed to a heat exchanger in order to elevate the temperature of the product, whereupon the stream passes through a holding tube to complete the aseptic cooking process. A metering device such as a rotary pump is located downstream of the holding tube for creating a substantially constant flow rate of product from the apparatus. Use of a downstream metering device in conjunction with an upstream constant pressure pump permits attainment of even, relatively high system pressures which in turn facilitates accurate temperature control and eliminates localized internal steam flashing which can deleteriously affect product quality. By virtue of the present apparatus and method, asep- tic processing of low acid heterogeneous food products such as stews and chilies can be safely accomplished on a commercial scale. - 1 -

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