| 摘要 |
PURPOSE:To prevent a casing from being deformed by feeding cooling air into the casing during combustion by the burner and improve the heat efficiency using air heated by cooling the easing. CONSTITUTION:In the t' burner wherein a porous member 11 comprising a combustion surface, a easing 13 extending from the vicinity of its periphery toward the rear, a mixed gas chamber 110 formed of them, an opening 41 for feeding a burnt gas mixture A into the mixed gas chamber 40 and a cooling chamber 20 formed in the easing 13 are provided, and the cooling chamber 20 has an air inlet part 21 and an air outlet part 22 which is allowed to communicate with a burnt gas-mixing chamber 50 through a gas feed pipe 62, the easing 13 is cooled by cooling air B from the air inlet part 21 and the cooling air B heated thereby is used as the air for forming the burnt gas mixture A fed into the mixed gas chamber 40. |
