Smokeless heating furnace

The invention discloses a smokeless heating furnace, and relates to the technical field of heating furnaces. The smokeless heating furnace comprises an outer cylinder, an inner cylinder located in the outer cylinder and an outer flanging located at the upper end of the inner cylinder. The outer flanging is placed at the upper end of the outer cylinder, a main air inlet is formed in the lower end of the outer cylinder in the circumferential direction, an upper air inlet is formed in the upper end of the inner cylinder in the circumferential direction, and a lower air inlet is formed in the bottom of the inner cylinder. The smokeless heating furnace has the advantages that smoke is little, and meanwhile functions of a grill and a function of barbecuing are fulfilled. 本发明公开了一种无烟取暖炉，涉及取暖炉技术领域；包括外筒、位于外筒内的内筒、位于内筒上端的外翻边；外翻边搁置在外筒上端，外筒下端周向设有总进气口，内筒上端周向设有上进气口，内筒的底部设有下进气口。本发明的有益效果是：烟雾少，同时具有烤架和烧烤的功能。