Eclipse Combustion, Inc.

Eclipse, Inc.

Matvey Fayerman

David W Collier

Ad De Pijper

An air heating burner having improved CO emissions across a broad range of heat inputs. The burner incorporates wings which cover portions of mixing plates associated with low to medium-low fire. The wings reduce air flow velocity to eliminate quenching during such conditions, thereby increasing combustion temperature and reducing CO emissions. The wings also form pre-heat chambers which further increase combustion temperature. The burner produces a substantially consistent level of CO emissions across the range of inputs, regardless of the pressure drop across the burner.

Air heating burner

An immersion tube burner having stable ignition and flame over a wide range of firing rates. The burner includes a restriction orifice located between the fan and the burner nozzle for minimizing pulsations of air pressure fluctuations between the fan and nozzle. The orifice is sized so that the air velocity is greater through the orifice than at the nozzle so that any such pulsations are directed downstream of the nozzle rather than upstream, where they can affect the flame. The burner includes a burner nozzle having a cone shaped mixing plate. The angled shape of the plate re-circulates hot gases towards the base of the flame to thereby ensure more consistent ignition and combustion. The mixing plate further has holes arranged in primary and secondary zones. The holes of the primary zone are located within approximately five times the diameter of the fuel outlet ports so that the fuel exiting such ports has sufficient velocity to optimize mixing. The holes in the secondary zone are located farther away from the ports so that minimal mixing takes place inside the combustion chamber. Instead, the air and fuel from the secondary zone mix more completely in the immersion tube and subsequently combust. Accordingly, the present invention provides an immersion tube burner with improved flame stability during ignition and operation and improved control over the amount of combustion taking place inside the combustion chamber and the immersion tube.

Immersion tube burner with improved flame stability

A burner nozzle having stable ignition and flame over a wide range of firing rates. The nozzle has a mixing plate which has air holes arranged in separate primary and secondary zones. The holes of the primary zone are located within approximately five times the diameter of fuel outlet ports so that the fuel exiting such ports has sufficient velocity to optimize mixing. The holes in the secondary zone are located farther away from the ports so that complete mixing takes place downstream of the nozzle. As a result, the present invention provides a burner nozzle with improved flame stability during ignition and operation and improved control over the amount of immediate and downstream combustion. The division of the mixing plate into primary and secondary zones further provides increased control over the amount of immediate and downstream combustion taking place. For example, by locating a certain percentage of air hole area in the primary zone, a corresponding percentage of combustion will take place in that zone. The exact percentages of holes in the primary and secondary zones may be selected according to the application. The mixing plate of the nozzle also has a frusto-conical shape which re-circulates hot gases towards the base of the nozzle to thereby ensure more consistent flame ignition and combustion.

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Rockford, IL, United States of America

Matvey Fayerman