Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent
1990-02-09
1991-01-08
Dority, Carroll B.
Stoves and furnaces
Hot-air furnaces
Liquid or gaseous fuel
431 12, 431 19, 431 62, 431 90, F24H 300
Patent
active
049827219
ABSTRACT:
The present invention discloses a method of compensating for a restricted intake in a two stage furnace. The furnace includes low and high pressure switches for determining if sufficient air is present to support low and high combustion. When the furnace operates at high combustion, the state of the high pressure switch is monitored to determine if the high pressure switch has changed state for a predetermined amount of time such as 15 seconds. The inducer fan is switched to low when insufficient air for high combustion has been indicated for such a predetermined time. If the state of the low pressure switch indicates that insufficient air is available for low combustion, then the inducer is turned on high.
REFERENCES:
patent: 4251025 (1981-02-01), Bonne et al.
patent: 4334855 (1982-06-01), Nelson
patent: 4340355 (1982-07-01), Nelson et al.
patent: 4373662 (1983-02-01), Bassett et al.
patent: 4421268 (1983-12-01), Bassett et al.
patent: 4451226 (1984-05-01), Landis et al.
patent: 4502625 (1985-03-01), Mueller
patent: 4638942 (1987-01-01), Ballard et al.
patent: 4648551 (1987-03-01), Thompson et al.
patent: 4703747 (1987-11-01), Thompson et al.
patent: 4706881 (1987-11-01), Ballard
patent: 4729207 (1988-03-01), Dempsey et al.
patent: 4773586 (1988-09-01), Ryan
patent: 4789330 (1986-12-01), Ballard et al.
patent: 4792089 (1988-12-01), Ballard
patent: 4842510 (1989-06-01), Grunden et al.
patent: 4887767 (1989-12-01), Thompson et al.
patent: 4907737 (1990-03-01), Williams, Jr.
Dority Carroll B.
Inter-City Products Corp. (USA)
LandOfFree
Restricted intake compensation method for a two stage furnace does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Restricted intake compensation method for a two stage furnace, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Restricted intake compensation method for a two stage furnace will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-928378