| 摘要 |
FIELD: water heating equipment, possibly used in industrial power engineering. ^ SUBSTANCE: boiler includes housing, fire box, convection gas duct, gas discharging box having three (inner, mean and outer) sections. Said sections are cylindrical ones and they are arranged coaxially. Each section includes two manifolds mutually connected through straight tubes of heating surfaces. Manifolds are connected by means of overflow tubes; partitions for changing water flow are installed inside them. Inner section forms fire box and it is gas-tight due to using spacers except its upper part through which discharge of gases is realized from fire box along its whole length to convection gas duct. Outer section is also gas tight due to using spacers except its lower part through which discharge of gases into gas discharge box is realized. Outer surface of inner section, inner surface of outer section and of tube of mean section form convection gas duct. ^ EFFECT: lowered outer size, mass parameters of boiler, reduced labor consumption for making enhanced-efficiency boiler. ^ 3 dwg |
