Combustion chamber construction

Details Combustion chamber construction Combustion chamber construction

1983-01-14

1986-02-04

Jones, Larry

Combustion

Combustion bursts or flare-ups in pulses or serial pattern

237 55, 126110R, 431114, F23C 1104

Patent

active

045682640

ABSTRACT:
An improved combustion chamber for a condensing furnace comprising an elongated cast body having a mixing chamber for receiving fuel and air and an expansion chamber communicating with said mixing chamber, a fuel inlet in said body communicating with said mixing chamber, an air inlet in said body communicating with said mixing chamber and means for igniting the air fuel mixture in said mixing chamber, the fuel inlet and the igniting means being opposed to one another to enhance the ignition of the fuel and air in the mixing chamber. An important feature of the invention is the critical ratio of the transverse cross sectional area of the expansion chamber to the transverse cross sectional area of the mixing chamber for maintaining continuity of operation. Such ratio should be about 2/1 to 2.4/1. In a preferred form of the invention, the igniting means is a spark plug and the spark plug opening into the mixing chamber is co-axial with the fuel inlet. In another aspect of the invention, the ratio of the maximum Btu input for the condensing furnace with respect to the volume (cubic inches) of the mixing chamber of the combustion chamber is in the range of 4,500/1 to 4,800/1.

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