Furnaces – Draft regulators
Patent
1995-11-03
1997-10-14
Bennett, Henry A.
Furnaces
Draft regulators
126116A, 236 15BD, 432 47, G05D 2300
Patent
active
056760698
ABSTRACT:
Systems and methods for controlling a draft inducer for use with a furnace. The draft inducer includes a motor for driving a fan for inducing a draft in the furnace that causes a pressure drop across the heat exchanger of the furnace. A memory stores information including a table of predefined speed/torque values for defining a set of speed/torque curves for operating the motor. A pressure switch provides a pressure signal representative of a reference pressure across the heat exchanger and a processor determines the speed and torque of the motor when the pressure drop corresponds to the reference pressure. In response to the determined motor speed and motor torque, the processor retrieves a parameter defining at least one delta value from the memory. The processor adapts the predefined speed/torque values as a function of the delta value thereby to define the speed/torque curves corresponding to a desired pressure drop. A control circuit generates a motor control signal in response to the defined speed/torque curves to cause the motor to operate as a function of the determined motor speed and motor torque 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: 3859549 (1975-01-01), Boesel
patent: 3859577 (1975-01-01), Wiart
patent: 3866099 (1975-02-01), Bourbeau
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: 4119892 (1978-10-01), Saito et al.
patent: 4167691 (1979-09-01), Sorensen et al.
patent: 4169990 (1979-10-01), Lerdman
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: 4757241 (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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