Automatic temperature and humidity regulation – Miscellaneous – Burner controls with automatic cutoff
Patent
1992-02-04
1994-03-08
Ford, John K.
Automatic temperature and humidity regulation
Miscellaneous
Burner controls with automatic cutoff
126285B, 110163, 431 20, G05D 2300
Patent
active
052920631
ABSTRACT:
A stack damper control apparatus for positioning a stack damper and controlling a fuel source in response to closing of a temperature sensitive switch. Limit switches comprising drop cams are coupled to the drive shaft of the damper. In response to a call for heat, a motor turns the damper, coupling a source of energy to a fuel source when the damper is open and the limit switches transfer. A relay coil is energized to hold open a switch providing a parallel energization path for the motor. When the call for heat has been met and the temperature sensitive switch opens, the relay de-energizes closing the parallel energizing path and allowing the motor to close the damper. Provision is made for a safety interlock to ensure the fuel source is not activated when the damper is closed. Provision is also made for interface to a blocked vent shutoff system.
REFERENCES:
patent: 2155642 (1939-04-01), Dewey
patent: 3025446 (1962-03-01), Leffler
patent: 4017024 (1977-04-01), Grostick et al.
patent: 4084743 (1978-04-01), Matthews et al.
patent: 4087045 (1978-05-01), Matthews et al.
patent: 4264033 (1981-04-01), Kutzner et al.
patent: 4295603 (1981-10-01), Clouser
patent: 4321030 (1982-03-01), Mathews
patent: 4374569 (1983-02-01), Hayes
Ford John K.
Johnson Service Company
LandOfFree
Damper actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Damper actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damper actuator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-149149