| 摘要 |
A hot water boiler has a front screen section, vertical tubes connected at ends to cross upper and lower collectors, back screen section that has vertical tubes connected at ends to cross upper and lower collectors, and main middle screen section arranged with placed as arches L-shaped side tubes provided with gas guide plates that at above are with bent towards each other ends connected at two sides to common longitudinal upper collector and at beneath with vertical ends are connected to autonomous longitudinal lower collectors, and two additional outer middle screen sections arranged with side walls installed at two sides outside of main middle screen section that at above are connected to autonomous longitudinal vertical collectors and at beneath are connected to autonomous longitudinal lower collectors. Side walls of two additional outer middle screen sections are arranged as L-shaped and at above by bent towards each other ends are connected to autonomous longitudinal upper collectors placed in the upper middle section of hot water boiler and at beneath by vertical ends are connected to autonomous longitudinal lower collectors placed in the lower section in the hot water boiler. |
