Fresh flowers vacuum cooling machine vacuum cooling fresh flowers after harvest. Harvest should produce flowers that rapid cooling treatment, namely pre-cooling. The method of cooling fresh flowers more, which is a very effective vacuum cooling preservation. Vacuum cooling is based on preservation under vacuum conditions can accelerate the evaporation of water features, the flowers placed in a vacuum chamber with a vacuum pre-cooling treatment, flowers out of part of the water transpiration, which in vitro release of latent heat with water vapor, so that the flowers rapid cooling. Vacuum cooling is not only fast, cool more evenly, but due to the reduced pressure, so that the oxygen concentration is reduced floral tissue, the concentration of ethylene release also reduced, which can effectively keep the flowers fresh and prolong shelf life. Vacuum cooling fresh flowers, process parameters. Vacuum cooling fresh flowers mainly to control the degree of vacuum pre-cooling process to control the temperature and humidity. The required performance level and the degree of vacuum pre-cooling tank physiological characteristics of flowers, flowers sensitive volume, humidity, and vacuum equipment flower itself relevant. Problems and Solutions flowers vacuum cooling machine preservation. Vacuum cooling fresh flowers flower dehydration process can cause the phenomenon, the temperature is about 10 ℃ decreased 1% loss of water, such as the temperature dropped from 30 ℃ 5 ℃, about 3% loss. Flower serious loss if the level of the surface of the pores open, will lead to decline in freshness, affecting the quality of flowers. Therefore, there must be strict control of flowers suitable humidity. Absorbent means flowers make precooled before water absorption, together with the container after a period of time together with the flower placed in a vacuum chamber with vacuum cooling, this method is mainly suitable for applications requiring a final pre-cooling temperature is lower floral (e.g. claim 1 ℃ to 2 ℃) . In addition, the post-harvest flowers, still in the water container with more buds adding about 1% silver nitrate as a preservative. Since the container handling suction vacuum tank take up some space, thus affecting productivity. Water treatment means using a humidifier before pre-cooling of the flower spray uniformly heated, so that pre-cooling before using floral flower heating machine uniformly spray humidifier, make of the flowers have enough water before pre-cooling. Practice has proved easy to apply water treatment. Vacuum cooling machine with fast cooling time (usually only 20-30 minutes), high efficiency, notable features cool even without packaging impact, especially suitable for flowers such a large surface area to volume ratio of cooling fresh items. With pre-cooling process of continuous improvement, performance vacuum cooling equipment to further improve the vacuum cooling fresh flowers storage or transport applications will become increasingly popular.