Multifunctional quick freezing equipment built up by a support frame ( F ), a mechanical vapour ventilation plant ( MV ), a mechanical vapour compression freezing refrigeration plant ( CP ), a tray rack ( TR ), a Dewar vessel ( DV ) with purge head, a defrost heater equipped with a temperature sensor and a proximity sensor, a double thermal insulated enclosure ( IE ), made by joining several polyurethane thermal insulation panels , in the form of a two-room construction separated by a common thermal-insulating wall , characterized in that the multifunctional quick freezing equipment comprises a quick freezing room provided with an access door equipped with the defrost heater, and an adjacent pre-cooling and temporary frozen storage room , provided with an access door equally equipped with the defrost heater, which communicate between them by means of a pipe that crosses the common wall , equipped with an exhaust valve , having the role of favouring the achievement of a slight overpressure in the quick freezing room in order to avoid the rapid evacuation to the adjacent room of nitrogen vapours that have not yet been used at maximum efficiency, they being further reused for the additional cooling of the adjacent room and the reduction of the thermal load of the mechanical vapour compression freezing refrigerating plant ( CP ) that serves it, subsequently, after exhaustion, being evacuated outside the enclosure ( IE ) through a pipe that crosses a ceiling of the adjacent room , equipped with an exhaust valve , a tray rack drive system ( DS ) and a liquid nitrogen supply plant ( NS ) that through a synergistic action, are configured to purge liquid nitrogen with high precision and flat distribution on a target surface and to homogenize the exposure to the liquid nitrogen jets, and respectively an automation plant ( AP ) comprising a thermocouple type temperature sensor ( TC1 ) for measuring the temperature in the centre of a product, a thermocouple type temperature sensor ( TC2 ) for measuring the temperature on the surface of the product, a temperature sensor ( PT100 ) of thermoresistance type, for measuring the temperature in the freezing room, a 24V DC power supply, a touchscreen operating terminal, a programmable logic controller ( PLC ) equipped with special modules for adapting signals from thermocouples, respectively thermoresistance, and configured so that as long as the purging of liquid nitrogen is active the algorithm designed for the automatic management of the quick freezing process does not allow the mobilization of the atmosphere inside the quick freezing room to be started by means of the mechanical ventilation plant ( MV ), which comprises several extended shaft fan motors and same number of discharge propellers, and the passage over the phase of maximum crystallization of the aqueous solution contained in the product takes place as quickly as possible, and is configured so that as long as the temperature measured in the centre of the product by means of the sensor ( TC1 ) is within the range -2°C to -5°C, the continuous purging of liquid nitrogen will be allowed regardless of the limitation established for the temperature of the atmosphere inside the quick freezing room measured by means of the sensor ( PT100 ). <EOS>