| 摘要 |
water heating equipment. SUBSTANCE: generator includes combustion chamber with fire bottom provided with opening (openings), flame stabilizer(stabilizers) in combustion chamber, jet(jets) for feeding and mixing combustible gas with air. Jet is in the form of double-step ejector and annular nozzle of screen. First step of ejector has relation of outlet area of central nozzle F1 to total area Fo of ejection nozzles F1/Fo= K*(Mr/MÔ)*F1/F0 = K1.(Mr/MB).L20, where Mr, MÔ - molecular mass values of combustible gas and air, Lo- stoichiometric coefficient. Mixing chamber of first step of ejector has cross section area F2=K2*F1. Annular nozzle of second step of ejector is formed by outer wall of mixing chamber of first step of ejector and mixing chamber of second step of ejector mutually joined in inlet portion of nozzle. Annular nozzle of second step is communicated with atmosphere and has outlet area F3=K3*F1. Mixing chamber of second step of ejector has cross section area F4=K4*F1. Annular nozzle of screen is formed by outer wall of mixing chamber of second step and by inner surface of cylindrical insert of opening of fire bottom mutually joined at inlet portion of nozzle. Annular nozzle of screen is communicated with atmosphere and has cross section area F5=K5*F1, where K1=0.18-0.22; K2=1.0-2.0; K3= 4.5-6.5; K5= 1.4-1.8. EFFECT: enhanced operational reliability, satisfied ecological characteristics of heat generator. 6 cl, 9 dwg
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