| 摘要 |
<p>PURPOSE:To provide a boiler for applying an over-heated steam or hot medium at a boiler inner pressure approximate to a normal pressure by a method wherein a boiler body to cause liquid of hot boiling point and low condensation point to be present under a normal pressure, a heating means for heating liquid, a thermal medium pipe to heat exchange with liquid under a passing of thermal medium and a shrinkage tank for absorbing an expanded portion of liquid are provided. CONSTITUTION:A flame of a burner 12 ascends as hot air within a five pipe 14, drops from a top position and is discharged into air from the lower-most part of a five 16. Hot water or other thermal medium within a pipe 20 ascends from a lower part of the pipe and taken out from the upper part of the pipe. An interior of a boiler body is kept at a high temperature sufficiently higher than 100 deg.C due to a presence of liquid 26, a heat exchanging operation is positively carried out between the five pipe 14 and the pipe 20 and the heat exchanging operation is sufficiently carried out even if the flue pipe 14 is not contacted with the pipe 20. A temperature of liquid 26 is increased to expand a volume of liquid and the shrinkage tank 22 is retracted by an amount of volumetric expansion and a pressure within the boiler body 10 is adjusted to a substantial normal air pressure.</p> |
