| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixed gas supply device and its composition variation suppressing method, properly stabilizing heat generation of a fuel gas such as a city gas. SOLUTION: The mixed gas (flow rate F0, pressure P0) from a carburetor 3 is separated to a parallel pipe La side and a parallel pipe Lb side at a branching position A, and distributed with a flow ratio Rf=Fa/Fb by flow valves V1a, V1b. Then the mixed gas at the parallel pipe La side flows into a direct tank 2a, and a tank internal pressure becomes Pa. On the other hand, a pressure of the mixed gas flowing at the parallel pipe Lb side is reduced by a pressure reduction valve V2b, and a tank internal pressure becomes Pb (Pa>Pb). A heat generation fluctuation index (ΔH=(Hmax-Hmin)/2) is adjusted to satisfyΔH0>ΔHb>ΔHa by properly setting the flow ratio Rf=Fa/Fb and a pressure ratio Rp=Pa/Pb, and further H1 as composite waveform of Ha and Hb is adjusted to satisfyΔH1<ΔHa. COPYRIGHT: (C)2009,JPO&INPIT
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