The combination of air conditioning packaging machines and vacuum coolers
First, food preservation, need to start from two basic conditions:
1, the food after a rapid cooling temperature from the inside to the outside of the core temperature quickly down to the preservation temperature (usually 0 ℃ -4 ℃) to maintain temperature equilibrium;
2, the use of gas to inhibit bacteria (cooked food, fresh food are applicable), control of living cells aerobic respiration rate, try to make it in a dormant state (fresh food) and kill some bacteria.
Second, based on the above basic conditions:
1, the use of vacuum pre-cooling machine, the use of air pressure, water boiling point decreased, so that the water molecules at high temperatures, room temperature (0 ℃ -100 ℃) phase change occurred. When the water molecules in the phase change conditions, will take a lot of heat of vaporization (unit of water), and water molecules in the direction of heat for the food core to the surface. In this way, the vacuum pre-cooling is cooler than the refrigerant refrigeration cooling efficiency, the effect of quality improvement, and make the product inside and outside the temperature equilibrium.
2, the use of energy-saving packaging machine, to complete the pre-chilled food (the core temperature has been down) for the atmosphere of fresh packaging. The food after the preservation of fresh food packaging in a closed container to receive gas preservation at the same time, to avoid storage, transportation, sales and other aspects of the secondary pollution.
Shanghai Ju Steel Machinery professional research and development of vacuum pre-cooling machine, air-conditioning packaging machine, and its combination of sales, won the high-end fresh market equipment.