| 摘要 |
<p>An arrangement in a regenerative heat exchanger for heat treatment of liquid food products comprises a holding cell (9) arranged between a final heating step (6) and a regenerative section (4) in the heat exchanger. In the holding cell (9) food product is heat treated during a predetermined time and temperature. A three-way valve (11) is arranged at the outlet from the holding cell (9) which three-way valve is reversible between a stable resting position in which the food product is returned to the inlet of the heat exchanger and an operation position in which the food product is led further to the regenerative section (4), at which the valve body (21) in the three-way valve (11) is arranged to be moved manually to the operation position and be maintained in this position by the pressure of the food product at its passage of the valve.</p> |
