Furnace control using induced draft blower and exhaust stack flo

Details Furnace control using induced draft blower and exhaust stack flo Furnace control using induced draft blower and exhaust stack flo

1979-07-12

1981-02-17

Wayner, William E.

Automatic temperature and humidity regulation

Combined boiler and furnace controlled

236 15BD, 431 12, F23N 100, F23N 108

Patent

active

042510252

ABSTRACT:
Apparatus is provided for constructing an induced draft furnace and its control system, to produce an induced draft furnace having increased efficiency. A blower located in the furnace exhaust stack is used to induce movement of air, fuel and combustion products into, through and out of the combustion chamber. A flow-limiting orifice in the exhaust stack in proximity to the blower causes a region of higher pressure to exist upstream from the orifice, with a region of lower pressure downstream from the orifice. A pressure signal representative of the flow rate of exhaust stack gases is sensed on one side of the orifice and is fed back to a modulating gas valve which controls the outlet gas flow from the valve to be proportional to the magnitude of the pressure signal representing exhaust stack flow rate. By selecting blower speeds and flow capacities, various firing rates for the furnace can be selected, from the design maximum of the furnace down to various derated levels.

REFERENCES:
patent: 1174003 (1916-02-01), Gibson
patent: 1363513 (1920-12-01), Keith
patent: 1721800 (1929-05-01), Wunsch
patent: 2332580 (1943-10-01), Klinker
patent: 3096020 (1963-07-01), Kraft
patent: 4097219 (1978-06-01), Prowald

Affiliated with

Also associated with

Rating

Furnace control using induced draft blower and exhaust stack flo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Furnace control using induced draft blower and exhaust stack flo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Furnace control using induced draft blower and exhaust stack flo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2258706