The food industry often requires dryers to evaporate the water in food materials during food processing to extend the shelf life of food, improve taste, reduce weight, etc. Here are some common dryers found in the food industry:

1. Oven: The oven is a general drying equipment that evaporates moisture on the surface and inside of food by heating air. It is generally used for drying food with a small output.

2. Vacuum dryer: The vacuum dryer achieves low-temperature drying by lowering the boiling point of water under low-pressure conditions, helping to maintain the color, taste and nutritional content of food. This is useful for certain heat-sensitive foods.

3. Microwave dryer: The microwave dryer uses the principle of microwave heating to heat food quickly and evenly. It is especially suitable for some foods that are susceptible to heat damage, such as strawberries, dried strawberries, etc.

4. Belt dryer: The belt dryer uses a conveyor belt to evenly expose food to heated air, and is suitable for the continuous production of large quantities of food, such as vegetables, fruits, etc.

Different food and processing needs may require different types of drying equipment, so when selecting a dryer, you need to choose based on the specific product properties and production process.

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