By employing the “tri-synergy vacuum” technical approach to obtain a rapid vacuum generation inside the cooling chamber. This unique process induces the boiling of water within the food at lower temperatures, effectively absorbing heat and achieving the rapid cooling of hot food.
In contrast to the conventional cooling methods, vacuum cooling capitalizes on the heat absorption that occurs during water boiling. It is well known that the boiling point of water decreases as pressure decreases. When creating an artificially low-pressure environment where the water within the food boils at a reduced temperature, it consistently absorbs heat from the food, thus achieving rapid and bacterial-control cooling.
The vacuum system used in the fresh food cooler incorporates a water-ring vacuum pump, a steam ejector, and a heat ex-changer. Initially, the system employs the water-ring pump to swiftly decrease air pressure. Subsequently, the steam jet ejector is engaged to enhance the vacuum pressure further. During this entire process, the heat ex-changer not only accelerates the temperature reduction within the chamber but also aids in the vacuuming process. The system incorporates servo control valves, enabling precise control, including the regulation of the air pressure reduction curve. This facilitates intelligent and variable-speed cooling and includes splash-proof measures.
Microorganisms multiply rapidly within a specific temperature range known as the “temperature danger zone”, which can have detrimental effects on food preservation. The fresh food cooler rapidly cools the food, significantly reducing its time within this temperature danger zone. This, in turn, effectively inhibits the growth of microorganisms and extends the shelf life of the food..
The fresh food cooler offers customized cooling profiles. By monitoring the correlation between pressure and boiling point changes, the cooling profile can be tailored to various food types using techniques like stepwise pressure reduction and wavy pressure restoration. It customizes cooling curves for various food types, achieving intelligent variable-speed cooling and anti-splash functions.
