Furnaces – Draft regulators
Patent
1995-04-28
1997-11-04
Bennett, Henry A.
Furnaces
Draft regulators
126116A, 236 15BD, 318254, 432 47, G05D 2300
Patent
active
056828268
ABSTRACT:
Systems and methods for controlling a draft inducer for use with a furnace. The draft inducer includes a fan for inducing a draft in the furnace combustion chamber that causes a pressure drop across a heat exchanger assembly for moving exhaust combustion chamber gases. The heat exchanger assembly has a plurality of heat exchanger elements which determine furnace capacity wherein the pressure drop across the heat exchanger assembly is affected by the furnace capacity. A motor drives the fan in response to a motor control signal and a memory stores information defining a relationship between motor speed, motor torque and parameters defining motor operation. A processor determines the speed and torque of the motor and retrieves from the memory the parameters corresponding to the determined motor speed and motor torque. The processor is responsive to the retrieved parameters for defining at least one set of speed/torque curves corresponding to a desired pressure drop across the heat exchanger assembly. A control circuit generates the motor control signal in response to the defined set of speed/torque curves to cause the motor to operate as a function of the determined motor speed and motor torque which are indicative of the furnace capacity for controlling the draft induced in the combustion chamber.
REFERENCES:
patent: 2679607 (1954-05-01), Potter
patent: 3426273 (1969-02-01), Kuntz et al.
patent: 3517308 (1970-06-01), Mirdadian
patent: 3550426 (1970-12-01), Griffo
patent: 3678352 (1972-07-01), Bedford
patent: 3679953 (1972-07-01), Bedford
patent: 3740629 (1973-06-01), Kohlhagen
patent: 3765234 (1973-10-01), Sievert
patent: 3818298 (1974-06-01), Eriksson
patent: 3818310 (1974-06-01), Smith
patent: 3824446 (1974-07-01), Forster et al.
patent: 3849718 (1974-11-01), Forster et al.
patent: 3859577 (1975-01-01), Wiart
patent: 3866099 (1975-02-01), Bourbeau
patent: 3879549 (1975-04-01), Boesel
patent: 3879646 (1975-04-01), Wiart
patent: 3940680 (1976-02-01), Tadokoro et al.
patent: 3995130 (1976-11-01), Graf
patent: 4005347 (1977-01-01), Erdman
patent: 4009825 (1977-03-01), Coon
patent: 4012677 (1977-03-01), Rist et al.
patent: 4030005 (1977-06-01), Doemen
patent: 4044287 (1977-08-01), Ratzel et al.
patent: 4097789 (1978-06-01), Doeman
patent: 4099111 (1978-07-01), Inaba et al.
patent: 4167691 (1979-09-01), Sorensen et al.
patent: 4169990 (1979-10-01), Lerdman
patent: 4199892 (1980-04-01), Saito et al.
patent: 4253053 (1981-02-01), Ray et al.
patent: 4274036 (1981-06-01), Fukasaku et al.
patent: 4360770 (1982-11-01), Ray et al.
patent: 4371823 (1983-02-01), Lohest
patent: 4374347 (1983-02-01), Mueller
patent: 4376261 (1983-03-01), vonder Heide et al.
patent: 4379984 (1983-04-01), Mueller
patent: 4384241 (1983-05-01), Stillhard
patent: 4389886 (1983-06-01), Korczak
patent: 4390826 (1983-06-01), Erdman et al.
patent: 4392417 (1983-07-01), Johannsen
patent: 4401933 (1983-08-01), Davy et al.
patent: 4449079 (1984-05-01), Erdman
patent: 4467657 (1984-08-01), Olsson
patent: 4499407 (1985-02-01), Macleod
patent: 4500821 (1985-02-01), Bitting et al.
patent: 4504881 (1985-03-01), Wada et al.
patent: 4519540 (1985-05-01), Bouelle et al.
patent: 4520296 (1985-05-01), Lepper et al.
patent: 4533986 (1985-08-01), Jones
patent: 4535275 (1985-08-01), Muller
patent: 4540921 (1985-09-01), Boyd, Jr. et al.
patent: 4544868 (1985-10-01), Murty
patent: 4556827 (1985-12-01), Erdman
patent: 4558264 (1985-12-01), Weischedel
patent: 4563619 (1986-01-01), Davis et al.
patent: 4578623 (1986-03-01), Tsukutani et al.
patent: 4638233 (1987-01-01), Erdman
patent: 4644233 (1987-02-01), Suzuki
patent: 4645450 (1987-02-01), West
patent: 4648551 (1987-03-01), Thompson et al.
patent: 4651079 (1987-03-01), Wills
patent: 4654566 (1987-03-01), Erdman
patent: 4667480 (1987-05-01), Bessler
patent: 4678974 (1987-07-01), Guastadini
patent: 4703747 (1987-11-01), Thompson et al.
patent: 4704567 (1987-11-01), Suzuki et al.
patent: 4707650 (1987-11-01), Bose
patent: 4710684 (1987-12-01), Okita et al.
patent: 4729207 (1988-03-01), Dempsey et al.
patent: 4733146 (1988-03-01), Hamby
patent: 4734627 (1988-03-01), Koerner
patent: 4737674 (1988-04-01), Miyao
patent: 4743815 (1988-05-01), Gee et al.
patent: 4748388 (1988-05-01), Muller
patent: 4755728 (1988-07-01), Ban
patent: 4757214 (1988-07-01), Young
patent: 4774656 (1988-09-01), Quatse et al.
patent: 4806833 (1989-02-01), Young
patent: 4818924 (1989-04-01), Burney
patent: 4820317 (1989-04-01), Fahey
patent: 4835448 (1989-05-01), Dishner et al.
patent: 4836096 (1989-06-01), Avery
patent: 4851751 (1989-07-01), Gipson
patent: 4858676 (1989-08-01), Bolfik et al.
patent: 4860231 (1989-08-01), Ballard et al.
patent: 4870332 (1989-09-01), Coghran et al.
patent: 4891537 (1990-01-01), Shiraki et al.
patent: 4935861 (1990-06-01), Johnson, Jr. et al.
patent: 4937467 (1990-06-01), Tuska et al.
patent: 4940912 (1990-07-01), Kant et al.
patent: 4972134 (1990-11-01), Getz et al.
patent: 4978896 (1990-12-01), Shah
patent: 5005115 (1991-04-01), Schauder
patent: 5019757 (1991-05-01), Beifus
patent: 5057733 (1991-10-01), Sonoda et al.
patent: 5075608 (1991-12-01), Erdman et al.
patent: 5075610 (1991-12-01), Harris
patent: 5086265 (1992-02-01), Uhlendorf
patent: 5097168 (1992-03-01), Takekoshi et al.
patent: 5144543 (1992-09-01), Striek et al.
patent: 5268623 (1993-12-01), Muller
patent: 5331944 (1994-07-01), Kujawa et al.
patent: 5373205 (1994-12-01), Busick et al.
R. Itoh et al., "Single-Phase Sinusoidal Rectifier With Step-up/down Characteristics," Nov. 1991, IEEE Proceedings-B, vol. 138, No. 6.
Bennett Henry A.
Boles Derek S.
General Electric Company
Krisher, Jr. Ralph E.
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