2. Before using the air fryer to fry sausages, it is necessary to preheat the air fryer, so that the sausages can be heated more evenly, and in the process of frying sausages, it is necessary to turn over 1-2 times to prevent the sausages from burning.

3. The working principle of the air fryer is "high-speed air circulation technology", which generates hot air through the heat pipe in the high-temperature heating machine, and then blows the high-temperature air into the pot with a fan to heat the food, so that the hot air circulates in the closed space, and the food is fried by using the grease of the food itself, so that the food is dehydrated and the surface becomes golden and crisp, thus achieving the frying effect. Therefore, the air fryer is actually a simple oven with a fan.