As an efficient, environmentally friendly, and energy-saving food processing and preservation equipment, food freeze-drying machines will be widely used and developed in the future. In the future, with the continuous innovation and improvement of technology, food freeze-drying machines will play a more important role in the field of food preservation, providing more possibilities for people's health and food life.

The working principle of a food freeze-drying machine is to freeze food at low temperatures, and then use the sublimation phenomenon in a vacuum environment to directly convert solid ice in the food into water vapor and remove it, thereby achieving the purpose of drying. During this process, the temperature of the food is kept below freezing point, effectively preventing the oxidation and degradation of nutrients.