| 摘要 |
PURPOSE:To uniformalize combustion gas flow and consequently improve latent heat recovery efficiency by a structure wherein partition plates with slit are arranged before and after an auxiliary heat exchanger. CONSTITUTION:A main heat exchanger 2 is provided in an exhaust tube 3, to which a gas burner 1 is faced. An auxiliary heat exchnager 4 and a forced exhaust fan 5 are arranged in the downstream of the main heat exchanger 2. The partition plates 11 and 12 respectively having slits 13 and 14 with the opening width S, which is 10-20% of the height l of the auxiliary heat exchanger 4, are arranged before and after the auxiliary heat exchanger 4. The numerals 6, 7, 8 and 9 designate a return pipe, an air separator, a circulating pump and a forwarding pipe respectively in the accompanying figures. |
