Steam generator, also called steam heat source machine (commonly known as boiler), is a mechanical device that uses the heat energy of fuel or other energy sources to heat water into hot water or steam. The original meaning of a pot refers to a water container heated on a fire, and a furnace refers to a place where fuel is burned. A boiler includes two parts: a pot and a furnace.
Steam generators are mainly classified according to fuels, which can be divided into electromagnetic steam generators, electric steam generators, fuel steam generators and gas steam generators.