The advantages of vacuum pre-cooled fruits and vegetables

The vacuum precooler for fruits and vegetables is the most widely used and is most effective in the preservation of agricultural products such as fruits and vegetables, flowers and edible fungi. Agricultural products are the most important preservation time within three hours after harvesting. They must be treated by pre-cooling to evaporate surface moisture, disperse field heat, and lower the temperature. Vacuum pre-cooling is currently the most advanced pre-cooling method. The vacuum pre-cooling fresh-keeping equipment is designed to prevent the freshness and quality of fruits and vegetables from falling, and uses the principle of vacuum pre-cooling to place the fruits and vegetables in a vacuum tank. At low pressure, water evaporates from the surface of the flowers of fruits and vegetables and uses water. The method of capturing latent heat of evaporation from the surface of fruit and vegetable flowers achieves a cooling effect.

Vacuum pre-cooled fruit and vegetable flowers have the following advantages compared to unpre-cooled:

(1) The original senses and qualities (color, aroma, taste, and nutrient content) of fruits and vegetables are kept the best, the market price is high, and sales are favorable.

(2) The cooling time is extremely fast, generally only 20-30 minutes, and any packaging with outlet holes can be used to remove the field heat of fruits and vegetables. The temperature of agricultural products can reach the central part, such as cooling with a cold store, it takes 10 to 12 hour.

(3) It can inhibit and kill bacteria and microorganisms; some small damages on the surface of fruits and vegetables with "thin layer drying effect" can be healed or will not continue to expand; cooling is uniform, rapid, clean, and free of pollution.

(4) The removed water only weighs 2% to 3%, so the weight does not decrease, and the treatment time is short, no local dry deformation occurs.

(5) Even if fruits and vegetables are harvested in the rain, water on the surface can be removed under vacuum. Washed vegetables such as carrots can also exclude surface moisture.

(6) Compared with unpre-cooled fruits and vegetables, freshness is maintained for a long time, suitable for longer storage and long-distance transportation, can extend the shelf life, vacuum pre-cooled products, supermarkets that do not require refrigeration to go directly to the grade, vacuum pre- Cold machine features:

1. Domestic and foreign high-quality vacuum pumps can be configured to automatically adjust the vacuum energy; the refrigeration unit adopts imported Duiling, Bitzer air-cooled/water-cooled compressors, supporting international brand refrigeration accessories, with long service life;

2. Configure high-performance water traps, small water temperature fluctuations, good results, long life;

3. Configure the film capacitance vacuum sensor and the probe type metal shield temperature sensor to measure the accuracy and accuracy of the component.

4. Uniquely designed pneumatic pressure seal to ensure that vacuum leakage rate is at a low level;

5. With automatic and manual dual operating system;

6. The configuration of advanced PLC and man-machine interface, clear display, easy operation, safe and reliable.