| 摘要 |
FIELD: steam boilers of furnace-tube type. ^ SUBSTANCE: piping heater comprises housing that receives flue tube, heat exchanging member made of a set of pipes whose straight sections are parallel to the longitudinal axis of the housing, intermediate heat transfer agent, gas deflecting chamber, and, arranged from the side opposite to the gas deflecting chamber, burning device, duct for gas discharging made of a chimney, convection chamber, and jacket around the flue tube that receives the intermediate hear-transfer agent. The heat exchanging member is made of a coil which consists of two section interconnected in series and oriented along the central longitudinal axis of the housing. One of the sections is set in the jacket of the flue tube, and the other one is set in the convection chamber which is defined by the space between the jacket and inner side of the housing. ^ EFFECT: expanded functional capabilities. ^ 1 cl, 4 dwg |
