GAS COMBUSTION-CONTROLLING METHOD AND GAS COMBUSTION DEVICE

摘要

A gas combustion device (1) has a combustor (11) for burning a fuel gas fed from a gas-feeding source, a blower (15) for regulating the amount of air inside a tubular casing (5) in which the combustor (11) is installed, an ejector (7) with a primary- air hole (37), and an igniter (9) for igniting a mixture gas jetted from a wick (39) provided forward of the ejector (7). The primary-air hole (37) sucks primary air into a gas flow path that is led from the gas-feeding source to the combustor (11), the sucking being induced by negative pressure produced by a flow speed of the fuel gas fed to the combustor (11). To ignite the mixture gas from the wick (39), the amount of air inside the casing (5) is reduced to increase the ignitability of the mixture gas. Once ignited, combustion is sustained with the combustibility of the fuel gas in the combustor (11) increased by an increased amount of air in the casing (5).