Gas Research Institute

Douglas W DeWerth

Sherwood G Talbert

Roger D Sheridan

William G Sterbik

Ronald A Cudnik

James R Deppisch

A vent device is provided for common venting of exhaust gases discharged from separate apparatus at different vent pressures. The vent device provides a passageway and exhaust gas inlets for combining the exhaust gases and conveying them to a single vent stack. The higher vent pressure exhaust gases are discharged within the passageway using a venturi or jet pump effect to provide a zone of reduced pressure in the passageway for inducing the flow of the lower vent pressure exhaust gases into the device.

Common vent device for positive vent pressure and draft hood equipped

A flame insert for reducing the NO.sub.x emissions of a range top burner is disclosed. The flame insert comprises a rigid framework provided by disjuncted support members connected to a pair of ring members. The support members engage the burner head to mount and accurately position the ring members adjacent the burner ports for engaging the flames during combustion and reducing the peak flame temperature by radiating heat energy away from the flames.

Flame insert

A flame insert for the reduction of emissions of oxides of nitrogen in atmospheric type burners is disclosed. The insert provides heat radiating surfaces which are contacted by the inner cones of the flames. The insert surfaces are sized and shaped to accommodate variations in flame position and to guide flames into contact therewith. A combined flame insert and secondary air baffling system is also disclosed.

Growing community of inventors

Cleveland, OH, United States of America

Douglas W DeWerth