Sterilizing method and sterilizing apparatus for retorted product

Abstract

Provided is a sterilizing apparatus for retorted products, which can transfer the retorted products unidirectionally to and from a retort and which can heat and sterilize the retorted products homogeneously for a short time, while sliding a carriage carrying the retorted products reciprocally in the retort. The rotating motions of a rotating drive source (16) disposed on the outside portion of the retort (3) are transmitted through a shaft sealing mechanism (13) to a cam mechanism in the retort, and are converted into reciprocal motions by the cam mechanism and transmitted to the carriage (7) carrying the retorted products (4), so that the retorted products can be heated and sterilized while the carriage (7) being slid forward and backward or rightward and leftward of the retort.

Description

technical field [0001] The present invention relates to a method of sterilizing retort products packaged in heat-resistant packaging for liquid foods containing solids and other high viscosity fluids, and to a sterilizing device for carrying out the above-mentioned sterilizing method. Background technique [0002] Sterilization of retort products in which contents such as fluid foods are sealed in packaging bags such as heat-resistant resin films is carried out by heating the packaging bags with steam or hot water in a retort container. However, when the size of the packaging bag is large, thick, or the content is high in viscosity, or in the sterilization treatment of retort products mixed with solids, heat transfer is poor when heating in the retort container, and the temperature of the product in the center rises It takes a long time to reach the set temperature. On the contrary, because the temperature of the product rises faster in the part close to the surface of the b...

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Problems solved by technology

[0006] However, in the sterilizing device described in Patent Document 1, since the motor and the crank mechanism for sliding the movable table are provided near one end portion in the longitudinal direction of the retort container, the trays can be carried in and out of the retort container only at the other end. It is carried out on one end side, and it is not possible to carry out one-way transportation in which trays containing unprocessed retort food are carried in from one end of the retort container body and carried out from the other end after sterilization, which limits the capacity of the retort food production line. configuration

In addition, the drive shaft of the crank mechanism is connected to the movable table inside the retort main body through the shaft seal mechanism provided on the retort main body. Due to the contact and sealing structure, there are problems such as the complexity of the shaft sealing mechanism to maintain the sealing performance.

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