Deep-freeze cryogenic tunnel and cabinets

The tunnels and cabinets have been manufactured for freezing food products by using cryogenic gas. These gases (nitrogen LN2) enable the product immediate freezing.
With the tunnel, products can be deep-frozen continuously; therefore, it can be integrated in production lines; whereas with the cabinet, products can be deep-frozen in trays on suitable trolleys.
Deep-freezing occurs by spraying cryogenic gas in the environment (inside the case), levelling the air flow on the product by means of electric ventilators.
This deep-freezing cycle is controlled by a PLC.