Oven is a device for baking and cooking food by forming hot air, which is generally closed or semi-closed. Oven is also called oven, oven, oven. If it is heated by hot air in an open form, it is called barbecue. Oven can also be used to refer to a device that uses hot gas for high temperature treatment. Traditional ovens use wood and coal to burn and heat.
Western-style oven is a common equipment in traditional family kitchens, which is generally horizontal. In the central plains of China, it is traditionally used in catering industry rather than family, and it is mostly vertical. In ancient China, ovens were not popular, which may be caused by the lack of fuel.
Modern ovens are multifunctional, using electric heating or natural gas respectively. Ovens are divided into three types: single layer, double layer and triple layer, and each layer can be independently controlled and used at the same time. Single-layer and single-layer ovens can also be divided into three types: single-layer, double-layer and triple-layer, and each layer is independently controlled. There is usually an automatic constant temperature system.