Patent ID: 9423127
Filing Date: 2016-08-23
CPC Classification: F23C,F23D,F23L,G05D

Claim Text:
1. An air damper for controlling air flow to a burner plenum, the burner plenum having a housing defining a first opening and a second opening opposing the first opening wherein air is introduced into the burner plenum through the first opening and the second opening supplies air to a burner, the air damper comprising: a damper plate mounted adjacent the first opening so as to define a flow path between the damper plate and the housing so that air enters the first opening through the flow path and is introduced into the burner plenum wherein the burner, first opening, second opening and damper plate are axially aligned along a longitudinal axis and the damper plate is moveable relative to the first opening along the longitudinal axis so as to change the size of the flow path; and an actuator operationally connected to the damper plate and configured to provide linear volumetric air flow control of the introduction of air through the flow path, wherein the actuator moves the damper plate along the longitudinal axis, and wherein the actuator is operationally connected to the damper plate such that rotational motion of the actuator is transferred as straight-line movement of the damper plate along the longitudinal axis, and wherein the actuator comprises: