Patent US4588375A successfully refreshed from Google Patents.
US4588375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner
Assignee: Individual
•
Filing: 1984-04-30
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Granted: 1986-05-13
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Expires: 2004-04-30
Abstract
Abstract An oil burner of the type comprising a burner housing having several nozzles (16, 17) adapted to introduce pressurized oil (18, 20) and through which housing combustion air (39) is blown for being mixed with the finely distributed oil drops ejected from the nozzles, and in which the burner nozzles (16, 17) are mounted substantially symmetrically with respect to the longitudinal axis (26) of the burner and are mounted angularly to each other, preferably at an angle of 6°-10° and so that the center axis (27, 28) of the oil jets cross each other at or in-front of the outlet (23) of a flame cup (13) of the burner. The burner nozzles are axially displaceable for adapting the oil body ejected from the nozzles so as to extend freely through and touching the outlet (23) of said flame cup (13), and the burner is formed with a turbulator (22) which is axially displaceable in relation to the nozzles (16, 17) so that the oil body from the burners extends freely through a central hole (34) of the turbulator (22). Preferably the flame cup (13) is formed with inlet openings (36) at a place in front of the nozzles (16, 17) for introducing hot combustion gases.
Inventors
- 👤 Christer Sandstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:12
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/40; F23D11/001; F23D11/24; F23D2900/00; F23D2900/11002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
302 words
An oil burner of the high pressure type having a number of burner nozzles (16, 17) mounted in a burner housing (14), each nozzle (16, 17) adapted to eject a concentrated high pressure jet of oil which is decomposed into a body (7', 8') of separate oil drops each body (7', 8') having a central axis (27, 28) extending axially through the center of said nozzles (16, 17), means (21) for having combustion air (39) flow through said burner housing past said burner nozzles (16, 17), said oil burner characterized by: a flame cup (13) having a larger cross sectional area than the burner housing (14) and a forwardly located outlet opening (23) having a smaller cross sectional area than said housing cross sectional area, said flame cup (13) having a throat (12) directly connected to the burner housing (14) and extending coaxially therewith, the oil drop bodies (7', 8') and the combustion air being mixed to an intimate fuel-air mixture within said flame cup, a turbulator (22) having a center hole (34) for passage therethrough of the oil drop bodies (7', 8') and tubulator wings (35) arranged around said center hole for imparting an axial screw movement to the passing combustion air, said turbulator being located between the burner nozzles (16, 17) and the outlet opening (23) so that the turbulator hole (34) is substantially tangential to the periphery of the oil drop bodies, and the burner nozzles (16, 17) being arranged symmetrically around the longitudinal axis (26) of the burner housing (14) and mounted at an angle relative to one another to cause the central axis (27, 28) of the oil bodies (7', 8') to cross each other substantially along the longitudinal axis (26) at a point between the turbulator (22) and the outlet (23) of the flame cup (13).
Claim 2
Dependent Claim
302 words
An oil burner of the high pressure type having a number of burner nozzles (16, 17) mounted in a burner housing (14), each nozzle (16, 17) adapted to eject a concentrated high pressure jet of oil which is decomposed into a body (7', 8') of separate oil drops each body (7', 8') having a central axis (27, 28) extending axially through the center of said nozzles (16, 17), means (21) for having combustion air (39) flow through said burner housing past said burner nozzles (16, 17), said oil burner characterized by: a flame cup (13) having a larger cross sectional area than the burner housing (14) and a forwardly located outlet opening (23) having a smaller cross sectional area than said housing cross sectional area, said flame cup (13) having a throat (12) directly connected to the burner housing (14) and extending coaxially therewith, the oil drop bodies (7', 8') and the combustion air being mixed to an intimate fuel-air mixture within said flame cup, a turbulator (22) having a center hole (34) for passage therethrough of the oil drop bodies (7', 8') and tubulator wings (35) arranged around said center hole for imparting an axial screw movement to the passing combustion air, said turbulator being located between the burner nozzles (16, 17) and the outlet opening (23) so that the turbulator hole (34) is substantially tangential to the periphery of the oil drop bodies, and the burner nozzles (16, 17) being arranged symmetrically around the longitudinal axis (26) of the burner housing (14) and mounted at an angle relative to one another to cause the central axis (27, 28) of the oil bodies (7', 8') to cross each other substantially along the longitudinal axis (26) at a point between the turbulator (22) and the outlet (23) of the flame cup (13).
Claim 3
Dependent Claim
63 words
An oil burner according to claim 1 further characterized by: a nozzle carrier (11) for holding said burner nozzles (16, 17), said carrier (11) being axially movable inside said flame cup (13) and positioned so that the periphery of the combined oil body from the nozzles (16, 17) and combustion air is substantially tangential to the outlet (23) of the flame cup (13).
Claim 4
Dependent Claim
51 words
An oil burner according to claim 1 further characterized by said turbulator (22) being axially movable in said flame cup (13) and positioned so that the combined oil body from the nozzles (16, 17) passes through the center hole (34) of said turbulator (22) substantially without impinging upon the turbulator (22).
Claim 5
Dependent Claim
50 words
An oil burner according to claim 1 further characterized by the central axis (27, 28) associated with a respective nozzle (16, 17) and oil body (7', 8') intersecting at a cross point (29) located within said flame cup (13) and at a predetermined position in front of said outlet (23).
Claim 6
Dependent Claim
59 words
An oil burner according to claim 4 further characterized by said cross point (29) predetermined position being located to cause said central axis (27, 28) intersecting a plane extending through said opening (23) in a direction substantially perpendicular to said longitudinal axis (26) to pass through said opening (23) within a circle having a diameter of about 10 mm.
Claim 7
Dependent Claim
26 words
An oil burner according to claim 1 characterized by said burner nozzle mounting angle with respect to said longitudinal axis (26) is between 6° and 10°.
Claim 8
Dependent Claim
26 words
An oil burner according to claim 1 characterized by said burner nozzle mounting angle with respect to said longitudinal axis (26) is between 7° and 8°.
Claim 9
Dependent Claim
44 words
An oil burner according to claim 1 further characterized by said throat (12) having a number of openings (36) arranged circumferentially around said throat for recirculating a portion of hot combustion gases, said openings (36) being located rearward of said burner nozzles (16, 17).
Claim 10
Dependent Claim
51 words
An oil burner according to claim 1 characterized by: a nozzle carrier (11) having a number of channels (41, 42, 43) axially extending through said carrier for holding said burner nozzles and permitting the passage of combustion air, said channels being radially arranged around a center point of said carrier (11).
Claim 11
Dependent Claim
54 words
An oil burner according to claim 9 further characterized by said nozzle carrier (11) including a first passageway (44) extending axially through the carrier center and at least one second passageway (45) located between each adjacent pair of channels (41, 42, 43), said central passageway (44) being substantially larger than said second passageway (45).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |