What are the functions of hot air in convection oven?
(1) The box is made of thin steel plate, which is generally double-layered, with an air interlayer or filled with thermal insulation materials. (2) The door of the box is equipped with high-temperature resistant glass, so you can observe the baking situation of food.
(3) Electric heating elements are usually metal tubes coated with far-infrared radiation materials. Generally, electric ovens have upper and lower electric heating elements, and some are equipped with one or two on the side of the box.
(4) The temperature control element is mainly made of bimetal. After the 1980s, electronic temperature control elements gradually became popular. ⑤ Common clockwork and electric timing device. The former has a timing range of 1 hour, while the latter can reach several hours. Some electric ovens also have food trays, which are driven by micro-motors and rotate at low speed, so that the food is baked more evenly. Computer electric oven appeared in the early 1980s. It uses temperature sensor, weight sensor, humidity sensor and microprocessor to automatically select the best baking mode according to the pre-input baking program, thus realizing the optimization and automation of baking process.
Electric oven type
The heating elements used in electric ovens can be roughly divided into three categories: one is an electric oven with far infrared tubes and timely heating tubes, which is a lower grade among all electric ovens. However, the basic electric baking function can still be realized, but the baking speed will be relatively slow. Therefore, it is more suitable for families and singles who generally need to buy electric ovens under economic conditions. The other is an electric oven with two far infrared tubes and a timely heating tube, which is characterized by faster heating speed. However, compared with the former, the price is slightly higher, generally one or two hundred yuan more expensive. There is also an ultraviolet heating tube in the attachment, which can be disinfected at high temperature. It can be sterilized, with high sanitation and fast heating speed, so it is more expensive and suitable for consumers with good economic conditions.