Coal-fired smokeless furnace

The invention discloses a coal-fired smokeless furnace, relates to a stove of a boiler, and belongs to a middle-sized furnace. For smoke and a flame, the smoke is an unburnt flame, the flame is burntsmoke, the conditions of high-temperature, oxygen and disturbance are satisfied, the smoke is absolutely turned into the flame, and the structure is the key. The coal-fired smokeless furnace comprisestwo chambers on a combustion reactor of a stove. The front chamber is called the general chamber, air supplementing holes (2) are additionally formed in the two sides of a stove opening of the general chamber, and the stove top of the general chamber is sealed and the smoke enters the re-chamber. The rear chamber is called the re-chamber (19), and the lower end of the re-chamber is inserted in the high temperature layer of the fuel. The re-chamber is provided with an upper fire inlet, a lower fire inlet and a fire outlet, and the upper fire inlet, the lower fire inlet and the fire outlet communicate with one another.