A method of maintaining the pressure difference in a heat...

Details A method of maintaining the pressure difference in a heat... A method of maintaining the pressure difference in a heat...

A - Human Necessities

23

L

A23L 3/18 (2006.01) A23C 3/033 (2006.01) A23L 3/00 (2006.01) A23L 3/22 (2006.01)

Patent

CA 2330598

The invention relates to a method of maintaining the pressure difference in a heat treatment plant such as, for example, a pasteuriser for liquid foods. In a temporary production disruption, the insufficiently treated product is caused to recycle by a return stroke. The pressure difference is maintained in that the already heat-treated product is enclosed in a conduit on the downstream side (14) of the plant, and that the space for the product in the conduit is restricted. The space for the product is restricted either in that a food gas is led into the conduit, or alternatively that the product conduit (29) is provided with an expansive portion (27). The expansive portion (27) consists of a pipe length (28) with an inner elastic wall (30) which expands by means of a gas or a liquid.

L'invention concerne un procédé permettant de maintenir la différence de pression dans une installation de traitement thermique telle que, par exemple, un pasteurisateur de produits alimentaires liquides. Dans le cas d'une interruption temporaire de production, le produit insuffisamment traité est recyclé par une course de retour. Pour maintenir la différence de pression, le produit déjà traité thermiquement est enfermé dans un conduit côté aval (14) de l'installation, l'espace du produit dans le conduit étant restreint. L'espace du produit est restreint en ce sens que le gaz de l'aliment est acheminé dans le conduit ou bien que le conduit de produit (29) est doté d'une partie expansible (27). Cette partie expansible (27) est constituée d'une section de tuyau (28) dotée d'une paroi élastique interne (30) qui se dilate à l'aide d'un gaz ou d'un liquide.

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