GAS COMBUSTION DEVICE

摘要

A gas combustion device (1) has a combustor (7) for burning a combustion gas fed, an ejector (3) with a primary air hole for sucking primary air into the combustor (7) by ejector effect, and an igniter (5) for igniting a mixture gas jetted from a wick (25) provided forward of the ejector (3). The combustor (7) is composed of a primary combustion chamber (11) for igniting and burning the mixture gas jetted from the wick (25), a secondary air hole (33) for feeding secondary air to the gas burning in the primary combustion chamber (11) after the ignition, a secondary combustion chamber (13) for further burning the gas burnt in the primary combustion chamber (11), and a tertiary air hole (35) for feeding tertiary air to the gas burning in the secondary combustion chamber (13). Since the secondary air is fed to the gas after ignition in the primary combustion chamber (11), combustion performance of the gas is improved even when the amount of the primary air is reduced to improve ignitability.