| 摘要 |
A device for in-line surface hardening of products intended to feed a unit for preparation of the products, the unit being located downstream of the device comprising: a chamber comprising a frigorie transfer means for surface hardening the products, at least one conveyor for introducing the products into the chamber and for extracting a surface hardened product and means for receiving a product request signal emitted by the preparation unit, means (i) or controlling the at least one conveyor so as, upon receiving a request signal, to extract from the chamber the surface-hardened product which has resided the longest in the chamber and, substantially at the same time, (ii) for introducing into the chamber a new product to be surface hardened, and means for controlling the frigorie transfer means so as to control the quantity of frigories to be transferred to the products present in the chamber per unit time as a function of at least one elapsed period between two successive times at which preceding request signals from the preparation unit were received.
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