Horizontal multiple-radiation energy-saving multipurpose atmospheric boiler

This invented boiler features that it has semi-circular water jacket with hearth header under it, a flue on upper curved roof is connected withwater collecting header on flue by connecting pipe, there are preheating tube bundles connected with rear vertical header on both sides and preheating tube bundle with water inlet pipe connecting to rear upper header on rear lower header; there is lower header pipe on inner side of water jacket, water cooling-walled pipe in the front on water inlet pipe bends from flue towards both sides close to water jacket upward to be connected with upper header pipe; and there is deduster in front of main flue. The said boiler has heat efficiency up to 82-85%, small volume, low cost, and may be used for drinking water, bathing and heating.