METHOD AND DEVICE FOR VACUUM COOLING

摘要

The invention relates to a method in which the products to be cooled (5) are placed in a heat-insulated chamber (1). A vacuum pump (4) makes it possible to reduce the pressure to a value at which the boiling point of water matches the desired temperature for the products. A cold battery (7) condenses the water vapour released by the products due to boiling. A weighting means (27) makes it possible to independently adjust the pressure in the chamber, which is detected by a probe (39), the temperature in the cold battery (7), which is detected by a probe (32) measuring the pressure in the cooling evaporator installed in the battery (7), and the power of the refrigeration compressor (11). The invention is useful in optimising preservation of products, cooling effectiveness, and energy consumption, in particular for precooling.