6 Pallet Fast Refrigeration Condenser Cooling Large Scale Walk in Chiller Type Flower Vacuum Cooler

Vacuum cooler/prechill equipment is not cold storage equipment, but pre-cooling processiong equipment before cold storage or Cold-chain transportation for leaf vegetable, mushroom, flower, herb, broccoli, etc.
After vacuum cooling, product's physiological change slows down, its storage life and shelf life are extended.

The storage and transportation of flowers after harvesting is a very complex technology. The application of vacuum pre-cooling and fresh-keeping technology in the storage and transportation of flowers after harvesting has begun. After harvesting flowers, by effectively adjusting the ambient temperature, the storage can be prolonged. period, to maintain the good quality of flowers.

One of the most important measures to keep flowers fresh is cooling. After the flowers are harvested, due to the accelerated respiration, a large amount of heat is generated, that is, the so-called field heat. This field heat must be removed quickly, otherwise it will be extremely unfavorable for the storage and transportation of flowers. Experiments have shown that if the flowers are not quickly removed from the field heat and placed at room temperature (20°C) for 1 day, the storage life of flowers under the conditions of suitable storage temperature (eg 0°C) is reduced to 5 to 7 days. . Therefore, the harvested flowers should be immediately subjected to rapid cooling, that is, pre-cooling. If the harvested flowers directly enter the storage warehouse or transportation vehicle without pre-cooling, not only the storage warehouse or transportation vehicle needs to provide a large amount of cooling capacity, but also because the storage warehouse and transportation vehicle are not designed to cope with a large amount of field heat. It is designed for flowers, and the flowers without pre-cooling go directly into the warehouse or the temperature in the car cannot be lowered for a long time. In addition, there is a big difference between the temperature of the goods and the temperature of the warehouse, and it is easy to condense a large number of water droplets on the roof of the warehouse. These water droplets infiltrate the flowers and cause rot. For the post-harvest pre-cooling treatment of flowers, the flowers only need a small amount of cooling after entering the storage warehouse or transport vehicle, and only need to adopt certain cold and heat protection measures, and the cooling efficiency is also high.

There are many ways to pre-cool flowers, and one of them is vacuum pre-cooling. Vacuum pre-cooling and fresh-keeping is based on the characteristics of accelerating water evaporation under vacuum conditions, placing flowers in a vacuum pre-cooling tank for vacuum treatment, part of the water in the flowers transpires outward, and the latent heat in it is released from the body with water vapor, so that the flowers are Cool down quickly. Vacuum pre-cooling is not only fast and uniform in cooling, but also reduces the oxygen concentration of flower tissue and the concentration of ethylene released by reducing the air pressure, which can effectively maintain the freshness of flowers and prolong the storage period.

The vacuum pre-cooling and fresh-keeping of flowers is mainly to control the humidity and temperature by controlling the vacuum degree of the pre-cooling process. The required vacuum degree is related to the physiological characteristics of the flowers in the pre-cooling tank, the number of flowers, the humidity of the flowers themselves, and the performance of the vacuum equipment. Problems and countermeasures in the process of vacuum pre-cooling and fresh-keeping of flowers The process of vacuum pre-cooling and fresh-keeping of flowers will cause flowers to lose water. About 1% of the water will be lost for every 10°C drop in temperature. If the temperature drops from 30°C to 5°C, about 3% of water will be lost. . If the flowers lose water seriously, the pores on the surface will open, which will lead to a decline in freshness and affect the quality of flowers. Therefore, it is necessary to strictly control the flowers to have the appropriate humidity. In the United States, a spray vacuum pre-cooling equipment has been applied, which not only effectively avoids dehydration in the pre-cooling process of flowers, but also quickly cools down. At present, the author mainly performs water absorption or water spray treatment on flowers before vacuum precooling. Water absorption means that the flowers are put into a water-containing container before pre-cooling, and the flowers are put into a vacuum tank together with the container for vacuum pre-cooling after absorbing water for a period of time. Flowers (1°C to 2°C as required). In addition, for flowers with more buds after harvesting, about 1% silver nitrate is added to the container water as a preservative. The water absorption treatment affects the production efficiency because the container occupies a certain space of the vacuum tank. Water spray treatment refers to using a humidifier to spray and humidify the flowers evenly before pre-cooling, so that the flowers have enough moisture before pre-cooling. Practice has proved that water spray treatment is simple and applicable.

Vacuum flower pre-cooling has the remarkable characteristics of fast cooling time (usually only 20 to 30 minutes), high efficiency, uniform cooling, and is not affected by packaging. The vacuum pre-cooling and fresh-keeping of flowers needs to continue to be explored and tested. With the continuous improvement of the pre-cooling process, the performance of the vacuum pre-cooling equipment will be further improved, and the application of vacuum pre-cooling and fresh-keeping in flower storage or transportation will become more and more popular.
  
   Huaxian produces vegetable vacuum cooler, cold storage room, hydro cooler, ice machine, freezing dryer since 2008. 
In 2018, we focused on worldwide fresh care market and Dongguan Huaxian Ltd. was registered. In the same year, we were happy to open an office in USA. 

Huaxian is engaged in fresh care by refrigeration and providing best fresh care solutions on food, meat, seafood, fruit, begetable by HUAXIAN quality refrigeration equipment and sophisticated technology, so as to maximum prolong shelf life and keep original freshness to create beneficial market values. Presently, our main market is in China, America, Europe, South East Asia and Australia. Gradually more and more customers lay trust on us and choose us for cooperation.

Energy saving is our constant persue as it is related with customer's investment yield rate. Our design proposal is fully based on energy saving and consumption reducing.

                                               China Office                                                                                                  USA Office
6.What kind of equipment that HUAXIAN supplies?

Refrigeration equipment as below:
  A.Pre-cooling Equipments:
    a.Leaf Vegetable Vacuum Cooler: for lettuce, watercress, spinach, dandelion, lamb's lettuce, mustard, cress, rocket, calalou, celtuces, land cress, samphire, vine, sorrel,  radicchio, endive, swiss chard, nettle, Romain lettuce, lollo rossa, Iceberg lettuce, rucola, Boston lettuce, Baby Mizuna, Baby Komatsuna, etc.
  
    d.Mushroom Vacuum Cooler: for Shiitake, Oyster Mushroom, Button mushroom, enoki mushrooms, Paddy Straw Mushroom, Shaggy Mane, etc.

    e.Hydro Cooler: for Melon, orange, peach, litchi, longan, banana, mango, cherry, apple, etc.

    f.Pressure Difference Cooler: for vegetable and fruit.

  B.Ice Machine/MAKER:
    Flake Ice Machine, Block Ice Machine, Tube Ice Machine, Cube Ice Machine.

  C.Cold Storage:
    Blast Freezer, Freezing Room, Cold Storage Room, Indoor&Outdoor Condenser Unit.

  D.Vacuum Freeze Dryer:
    For meat/fish/vegetable/fruit chips.