What is the working principle of an air fryer?

The working principle of an air fryer is "high-speed air circulation technology". It generates hot air through the heat pipes inside the high-temperature heating machine, and then uses a fan to blow the hot air into the pot to heat the food, circulating the hot air in a closed space. The oil and fat of the food itself are used to fry the food, dehydrating it and making the surface golden and crispy, achieving the frying effect. So, the air fryer is actually a simple oven with a fan.