Metod och anordning för att kontrollera uppehållstiden i en hållarcell vid infusionsuppvärmning

摘要

The disclosure relates to an apparatus for controlling the holding time in a holding tube in infusion heating. The infuser is of the type which consists of a pressure vessel ( 1 ) with a conical bottom region ( 2 ). The pressure vessel ( 1 ) has an inlet ( 3 ) for product in its upper region and an outlet ( 8 ) with an outlet valve ( 9 ) in the lower region. The pressure vessel ( 1 ) also has an inlet ( 5 ) for steam. In the conical bottom region ( 2 ) of the pressure vessel ( 1 ) there is disposed a conical body ( 6 ) which, to the greater part, fills the conical bottom region ( 2 ). The remaining space ( 7 ) between the bottom region ( 2 ) and the conical body ( 6 ) constitutes a holding tube. The outlet of the pressure vessel ( 1 ) is in communication with a vertical tube ( 11 ). In the vertical tube ( 11 ) there is disposed a level indicator ( 14 ) which controls the level in the holding tube in that the level indicator ( 14 ) controls the outlet valve ( 9 ). The present invention also relates to a method for controlling the holding time so that this will be the same regardless of changes in density in the product.