| 摘要 |
PURPOSE:To obtain high thermal efficiency and improve the combustion property of the device by preventing heat dissipation from a heat exchanger by employing a heat shielding plate. CONSTITUTION:The heat shielding plate 7 is attached between the heat exchanger 2 for hot-water supplying as well as the heat exchanger 3 for room heating and a case 8. The heat shielding plate 7 is attached to the front and rear surfaces of the case 8 air-tightly and the upper part of the same plate 7 is attached to an exhaust tube 5 air-tightly. A space is provided between the lower part of the heat shielding plate and the lower surface of the case 8. The heat dissipation from the heat exchanger 2 for hot-water supplying and the heat exchanger 3 for room heating is prevented by attaching the heat shielding plate 7 in such manners, therefore, high thermal efficiency may be obtained even upon low load combustion. On the other hand, feed air for combustion is regulated by the heat shielding plate 7 when gas is burnt by a burner 1, therefore, the combustion property of the device may be improved. |
