Basic principle: charcoal smokeless barbecue stove. During the combustion process, charcoal releases carbon dioxide, which is colorless and odorless. Moreover, charcoal has been burned and is inherently smokeless. A regular barbecue stove produces smoke when making products because the oil and seasoning are dropped onto the carbon fire during the production process. Gas barbecue stoves generally use a stainless steel body, which is ignited by electronic pulses. The heat generated by the combustion of liquefied petroleum gas or natural gas is used to heat the four independent high-temperature resistant crystal red gas heating plates on top, and then food is baked on the iron plate. Looking at energy-saving component control, electronic pulse switches can also control the size of the flame to control the temperature of the iron plate, which is practical and convenient. Electric grill is a type of direct burning electric grill that directly acts on food as a heat source. During grilling, food oil immediately drips and there is no repeated infiltration of oil, which means there is no process of frying or frying. Therefore, food contains less oil, and the food produced by grilling has a true barbecue flavor. Microwave BBQ Oven Microwave ovens use microwaves to pass through insulating materials such as glass, ceramics, and plastics, but do not consume energy; Foods containing water are not only impermeable to microwaves, but their energy is instead absorbed through these properties. The shell of the microwave oven is made of metal materials such as stainless steel, which can prevent microwaves from escaping from the oven and avoid affecting people's health. Containers for food are made of insulating materials. The heart of a microwave is a magnetron. This electron tube called a magnetron is a microwave generator that can generate microwaves with a vibration frequency of 2.45 billion times per second. This kind of invisible microwave can penetrate food up to 5cm deep and cause water molecules in the food to move accordingly. The intense movement generates a large amount of heat energy, and the food is "cooked"