Steam duct assembly and steam boiler

The utility model discloses a steam duct assembly, including the U -shaped pipeline, the horizontal part in bottom of U -shaped pipeline is equipped with the water inlet, and the top of vertical component is equipped with steam outlet, and wherein the outside of the vertical component of U -shaped pipeline is equipped with interior heat preservation, heating coil, external thermal insulation layer and aluminium alloy plate in proper order, and the horizontal partial outside of U -shaped pipeline is equipped with interior heat preservation, heating coil, external thermal insulation layer and aluminium alloy plate in proper order. Still include the steam conduit formula boiler that is formed by the equipment of steam duct assembly, the load module of steam conduit formula boiler is by a plurality of steam duct assembly, water pipe, steam pipe, the water pipe is connected with the water pump, the steam pipe with hold a vapour section of thick bamboo and be connected. Through the steam conduit formula boiler that