US3700376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner
Assignee: Deutsche Babcock and Wilcox AG
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Filing: 1970-12-28
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Granted: 1972-10-24
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Expires: 1990-12-28
Abstract
Abstract An oil burner for connection to the wall of a boiler or steam generator having an axially movable burner pipe which extends through an opening in the rear wall of the burner, and an air measurement device in the form of a venturi meter surrounding the burner pipe and including a first truncated cone of a venturi meter which is coupled to the air chamber for regulating the air supply. A second truncated cone surrounds the oil burner nozzle and includes a means for measuring the amount of air pressure.
Inventors
- 👤 Horst Niepenberg
- 👤 Rolf Oppenberg
- 👤 Rudolf Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:20
CPC Classifications
F; F23; F23C; F23C7/00; F23C7/008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
191 words
An oil burner for a steam generator, comprising: a burner pipe, having a nozzle mounted on its end, disposed through a front wall of the steam generator and extending through an opening in a rear wall of the generator and means mounting said pipe for axial movement; an air chamber, disposed between the front and rear walls of the generator, for supplying air to said burner nozzle; means for regulating the supply of air from said air chamber about said burner nozzle; including a plurality of venturi air measurement devices, having different diameters and being concentrically and telescopically disposed about said burner pipe, and communicable with said air chamber, for supplying air from said air chamber to said burner nozzle and simultaneously measuring the air pressure and the quantity of air supplied to said burner nozzle through said venturi air measurement devices, and for providing a centrally-disposed air flow through one of said venturi air measurement devices about said burner pipe and at least one circular air flow through at least one of said other venturi air measurement devices from said air chamber to said burner nozzle about said burner pipe.
Claim 2
Dependent Claim
191 words
An oil burner for a steam generator, comprising: a burner pipe, having a nozzle mounted on its end, disposed through a front wall of the steam generator and extending through an opening in a rear wall of the generator and means mounting said pipe for axial movement; an air chamber, disposed between the front and rear walls of the generator, for supplying air to said burner nozzle; means for regulating the supply of air from said air chamber about said burner nozzle; including a plurality of venturi air measurement devices, having different diameters and being concentrically and telescopically disposed about said burner pipe, and communicable with said air chamber, for supplying air from said air chamber to said burner nozzle and simultaneously measuring the air pressure and the quantity of air supplied to said burner nozzle through said venturi air measurement devices, and for providing a centrally-disposed air flow through one of said venturi air measurement devices about said burner pipe and at least one circular air flow through at least one of said other venturi air measurement devices from said air chamber to said burner nozzle about said burner pipe.
Claim 3
Dependent Claim
133 words
The oil burner as recited in claim 1, wherein said venturi air measurement devices include first and second truncated cones, each being co-axially joined to the smaller opening of the other of said cones, said first truncated cone being disposed within said air chamber and having its larger opening directed towards the rear wall of the generator, and wherein said means for regulating the quantity of air supply to said burner nozzle comprises a drum slide disposed about said first truncated cones of said venturi air measurement devices and an actuating rod coupled to said cylindrical drum slide, said rod moving said drum slide axially across an opening formed between the larger opening of said first truncated cone and the rear wall of the generator to regulate the quantity of air flowing thereinto.
Claim 4
Dependent Claim
62 words
The oil burner as recited in claim 2, further comprising air guide rings, disposed on the edges of said first truncated cones of said venturi air measurement devices about the air inlet openings thereof so as to form a plurality of radial air inlet openings about said burner pipe and cause a radial entrance of air into said venturi air measurement devices.
Claim 5
Dependent Claim
71 words
The oil burner as recited in claim 3, wherein said drum slide is disposed about one of said radial air inlet openings formed by said guide rings, and progressively closes off said radial air inlet opening as said drum slide is moved axially across said opening by said actuating rod, so as to progressively open and close said radial air inlet opening to control the air flow about said burner nozzle.
Claim 6
Dependent Claim
29 words
The oil burner as recited in claim 4, wherein at least one of said co-axially disposed venturi air measurement devices is axially movable with respect to said burner pipe.
Claim 7
Dependent Claim
32 words
The oil burner as recited in claim 4, further comprising at least one additional burner nozzle disposed in the air outlet opening of at least one of said venturi air measurement devices.
Claim 8
Dependent Claim
65 words
The oil burner as recited in claim 5, wherein the angle of inclination of said first truncated cones of said venturi air measurement devices with respect to the axis of said burner pipe is between 20*-22*, and the angle of inclination of said second truncated cones of said venturi air measurement devices with respect to the axis of said burner pipe is between 5*-15* .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |