WNS系列全自动燃油、燃气锅炉为卧式内燃湿背式三回程火管锅炉，燃烧室由波形炉胆和回燃室组成。油(气)由燃烧机喷入燃烧室进行燃烧，生成的高温烟气经回燃室折入第二回程传热优良的螺纹烟管，再经前烟箱折回第三回程烟管，最后经后烟箱及烟囱排入大气。 WNS系列全自动燃油、燃气锅炉，采用全对接焊缝、湿背式先进结构及高效传热元件，配套进口燃烧机及多种安全装置，具有体积小、重量轻、占地面积小、升压快、高效节能及环保效益好等特点，深受广大用户的青睐。 WNS automatic fuel oil (gas) boiler is horizontal type with internal combustion and wetted back three-return fire pipes. The combustion chamber is composed of corrugated furnace and strike-back chamber. Gushing from combustion engine, the fuel oil (gas) combustion chamber is burned and the generated high-temperature smoke returns from strike-back chamber to the second-return thread fire pipe with good heat transmission, and passes through the front fire box to the third-return fire pipes , and at last passes through the back fire box and chimney to the air. WNS automatic fuel oil (gas) boilers adopts full butt-welding, advanced wetted back structure and efficient heat-transmission components and is assembled with imported combustion engine and several safety equip ments. They are favorably received by many customers due to their compactness and lighmess, less land occupancy and quick boosting, efficiency and energy saving and environment protecting.