Patent ID: 11879640
Assignee: COWLES OPERATING COMPANY
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. A combustion air proving system for monitoring combustion air supplied to a burner, comprising:
a body for the passage of air flow, said body having an inlet, an outlet, and a damper therebetween;
the damper for affecting the air flow monitored by a sensor, the damper further interchangeable between an open position and a closed position, the open position allowing air to flow through said body, and the closed position preventing or impeding air from flowing through said body;
said sensor disposed on said combustion air proving system body adjacent the damper and the body outlet, the sensor monitoring a parameter correlating to, or representative of, said air flow, wherein said sensor is an air pressure sensor or an air flow sensor, and said parameter is an air pressure level or an air flow level, respectively;
a biasing member for maintaining the damper in the open position, wherein said biasing member is selected from the group consisting of: a weight disposed on an edge of the damper, a magnet disposed within said body actively pushing on the damper, a spring exerting a constant force on the damper in a direction towards the open position, and a latch within said body for receiving and locking said damper in place.