Induced draft heater with premixing burners

Details Induced draft heater with premixing burners Induced draft heater with premixing burners

1999-05-28

2000-07-04

Lazarus, Ira S.

Combustion

Timer, programmer, retarder or condition responsive control

431 12, 431354, 431355, 126116R, 126 91A, 126116A, 481801, F23N 524, F24H 300, F23D 1462, B01F 302

Patent

active

060829931

ABSTRACT:
A fuel/air mixture control for an induction heater having a tube-type burner includes a side-venting fuel nozzle for introducing fuel into an induction air stream entering the burner. A multi-speed blower draws combustion air into the burner and an air flow constrictor disposed proximate the fuel nozzle increases the velocity of the induction air stream proximate the fuel nozzle, increasing the volume of fuel introduced into the burner conduit. The fuel/air mixture depends upon the speed of the blower, which can be thermostatically controlled to increase speed upon sensing higher temperature combustion products, thereby maintaining a steady mass air flow and air/fuel mixture.

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