Integrated furnace control having ignition switch diagnostics

Combustion – Timer – programmer – retarder or condition responsive control – With test circuit checking or analyzing flame sensing...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

431 25, 431 69, 431 78, 340579, F23N 500

Patent

active

049558064

ABSTRACT:
An integrated electronic control arrangement is disclosed in the illustrative environment of burner such as in a gas-fired furnace. The control incorporates a self-test feature which shuts down the furnace in the event of any one of a number of possible sensed faults. Self-testing occurs automatically before an attempt at ignition and during furnace operation. Proper functioning of the sensor which senses for induced air flow through the burner combustion chamber is tested prior to enabling a fan which causes that induced air flow. Air flow is confirmed by sending to and receiving back from the sensor a sequence of pulses. Should air flow not be sensed during a combustion period, combustion is terminated. A flame sensor is provided for determining the presence of a flame in the combustion chamber. During times when a flame should be present, pulse sequences are sent to and received back from the flame sensor to confirm that a flame is present. When it is known that no flame is present, if sent pulses are received back, a fault has occurred and the system locks out. If, at any time, any pulses are received when none were sent the system also locks out.

REFERENCES:
patent: 3576556 (1971-04-01), Sellers, Jr.
patent: 3781161 (1973-12-01), Schuss
patent: 4243372 (1981-01-01), Cade
patent: 4295129 (1981-10-01), Cade
patent: 4402663 (1983-09-01), Romanelli et al.
patent: 4444551 (1984-04-01), Mueller et al.
patent: 4662838 (1987-05-01), Riordan
patent: 4672324 (1987-06-01), van Kampen

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Integrated furnace control having ignition switch diagnostics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated furnace control having ignition switch diagnostics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated furnace control having ignition switch diagnostics will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1181368

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.