The utility model relates to an adopt water -cooling to separate flame export of temperature, including flame export water jacket, wind cover, the wind ways is in the water jacketed outside of flame export, and the outer end of wind cover is apart from the water jacketed outer end 3 -5cm of flame export. The beneficial effects of the utility model are that, structure scientific and reasonable, water jacket formula flame exports, can prevent the high temperature of flame export, prolongs the life of flame export, and the heat energy loss is lacked, can improve the heat utilization rate height. The flame that overlaps inside at wind exports the ventilation pipe that is equipped with the non - radial setting of several between water jacketed outer wall and the inner wall, and the water jacketed hole of inner chamber entering flame export that wind overlaps is followed to the wind of being convenient for, can carry out secondary benefit wind to flame, and the messenger is burnt more thoroughly.