Patent US3199912A successfully refreshed from Google Patents.
Patent US4162655A successfully refreshed from Google Patents.
US4162655A
Expired / Lapsed
US
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Heat producing device
Assignee: DeKalb Genetics Corp
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Filing: 1978-03-13
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Granted: 1979-07-31
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Expires: 1998-03-13
Abstract
Abstract A heat producing device utilizing solid carbonaceous material, especially material of cellulosic composition such as corn cobs, as fuel. The heat producing device includes a gasifier for the carbonaceous material. The gas outlet of the gasifier leads to a burner. A cyclonic burning chamber and particle separator are connected to the discharge of the burner. The cyclonic burning chamber and particle separator has a heat outlet and a particle discharge outlet. An adjustable air inlet and mixing chamber are installed in the heat outlet for adding ambient air to reduce the temperature of the heat discharged from the heat outlet. A discharge fan has an inlet connected to the mixing chamber and an outlet for discharging the heat received therefrom to a drying chamber or other heat utilizing source.
Inventors
- 👤 Stanley L. Bozdech
- 👤 Thomas E. Lipinski
- 👤 John W. Allen
- 👤 Stanley J. Ryba
- 👤 G. B. Kirby Meacham
- 👤 Charles Anthony, Jr.
- 👤 Dan L. Pattyn
- 👤 Frank Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:11
CPC Classifications
F; F23; F23H; F23H13/00; F23H13/08; F23G; F23G5/00; F23G5/02; F23G5/027; F23G7/00; F23G7/10; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
A heat producing device utilizing solid carbonaceous material, especially material of a cellulosic composition as fuel, said device including: a gasifier for the carbonaceous material, said gasifier having a gas outlet, a burner supplied by said gas outlet, a cyclonic burning chamber and particle separator connected to said burner, said cyclonic burning chamber and particle separator having a heat outlet and a particle discharge outlet, an adjustable air inlet and mixing chamber installed in said heat outlet for adding ambient air to reduce the temperature of the heat discharged from said heat outlet, and a discharge fan having an inlet connected to said mixing chamber and an outlet for discharging the heat received therefrom.
Claim 2
Dependent Claim
114 words
A heat producing device utilizing solid carbonaceous material, especially material of a cellulosic composition as fuel, said device including: a gasifier for the carbonaceous material, said gasifier having a gas outlet, a burner supplied by said gas outlet, a cyclonic burning chamber and particle separator connected to said burner, said cyclonic burning chamber and particle separator having a heat outlet and a particle discharge outlet, an adjustable air inlet and mixing chamber installed in said heat outlet for adding ambient air to reduce the temperature of the heat discharged from said heat outlet, and a discharge fan having an inlet connected to said mixing chamber and an outlet for discharging the heat received therefrom.
Claim 3
Dependent Claim
45 words
The heat producing device of claim 1 in which air flows in a path through the gasifier, the burner, the cyclonic burning chamber and particle separator, the mixing chamber and the discharge fan with the rate of air flow being controlled by the discharge fan.
Claim 4
Dependent Claim
31 words
The heat producing device of claim 2 in which said air flow is controlled to maintain negative pressures in the gasifier, burner, cyclonic burning chamber and particle separator and mixing chamber.
Claim 5
Dependent Claim
54 words
The heat producing device of claim 3 in which the temperature is maintained in the cyclonic burning chamber and separator at a sufficiently high level and the path of travel of the products of combustion is sufficiently along to consume all tars and other volatile impurities contained in the gas produced in the gasifier.
Claim 6
Dependent Claim
15 words
The heat producing device of claim 1 in which said gasifier is an updraft type.
Claim 7
Dependent Claim
25 words
The heat producing device of claim 5 in which said gasifier is of rectangular lateral cross section and has a pair of opposed inclined grates.
Claim 8
Dependent Claim
17 words
The heat producing device of claim 6 in which said opposed inclined grates are forced air cooled.
Claim 9
Dependent Claim
24 words
The heat producing device of claim 6 in which an agitator is provided in the gasifier to maintain the compactness of the carbonaceous material.
References Cited (Backward Citations)
US3344758A
Cited
US3658482A
Cited
US3777676A
Cited
US3861332A
Cited
US3810431A
Cited
US3828701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-30 | 1983-01-29 | 1983-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-30 | 1987-01-29 | 1987-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-30 | 1991-01-29 | 1991-07-31 | $7700.00 | Window Closed / Lapsed |