| 摘要 |
PURPOSE:To obtain an engine which has a high degree of heat-efficiency, by providing a main burner at the center of a plurality of heat-exchangers arranged on a circle line, by forming a recess in the top section of a heater in each heat-exchanger unit, and by providing auxiliary burners for blowing flames into the recesses. CONSTITUTION:A plurality of cylinders 32 and a plurality of heat-exchangers 60 are arranged on circle lines, respectively, and a main burner 100 is arranged right above the center of the circle lines. A heater 61 in the top section of each heat-exchanger 60 is formed in its top section with a recess 64. Auxiliary burners 101 are arranged for blowing flames into the recesses 64. Therefore, the heater 61 is heated from the inside and outside thereof so that it may receive sufficient heat. Since flames in the recesses dwell therein, the heat- efficiency becomes high. |
