Working principle of vacuum pre cooler for fruits and vegetables

　　The fruit and vegetable vacuum pre cooler is a device that utilizes the principle of heat exchange under vacuum conditions to rapidly cool heat sensitive materials such as fruits and vegetables. This article provides a specific explanation of the working principle of the fruit and vegetable vacuum pre cooler, which is as follows:

　　1. Fruits, vegetables, and other materials are loaded into a vacuum chamber, and the air inside the vacuum chamber is pumped out by a vacuum pump to keep it in a vacuum state.

　　2. In a vacuum state, cooling water is sent to the cooling plate inside the vacuum chamber through a cooling water circulation system. Heat exchange occurs between the cooling plate and the material, and the heat of the material is absorbed by the cooling plate, thereby achieving the purpose of cooling.

　　3. The vacuum degree inside the vacuum chamber can be monitored and adjusted through a vacuum gauge to achieve the best cooling effect.

　　4. After cooling is completed, open the valve of the vacuum chamber, remove the material, and complete the pre cooling process.

　　We have briefly introduced the working principle of the fruit and vegetable vacuum pre cooler here. The fruit and vegetable vacuum pre cooler has the advantages of fast cooling speed, good cooling effect, and maintaining fruit and vegetable quality, and is widely used in industries such as fruit and vegetable processing and refrigeration.

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