FIELD: heat power engineering; combustion of natural and liquefied gases in domestic and industrial gas burning devices. SUBSTANCE: device consists of blowing set with electric motor and gas burner. Blowing set has one (n= 1) or several impellers (n≥2) and deflecting members: intermediate ones (n=1) where n is number of impellers, and one end member, each furnished with guide vane assemblies. It provides pressure at blowing set outlet proportional to number of impellers at constant air flow rate equal to flow rate of one impeller at high degree of air flow homogeneity in burning zone. EFFECT: enlarged operating capabilities. 6 cl, 5 dwg
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