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Publication numberUS3905752 A
Publication typeGrant
Publication dateSep 16, 1975
Filing dateMay 3, 1974
Priority dateMay 3, 1974
Publication numberUS 3905752 A, US 3905752A, US-A-3905752, US3905752 A, US3905752A
InventorsMiller William F
Original AssigneeHy Way Heat Systems Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Oil burner
US 3905752 A
Abstract
An oil burner comprises a burner tube with an atomizing nozzle disposed axially thereof and between a pair of directional baffles, one downstream and the other upstream with respect to the nozzle, the upstream baffle controlling and directing combustion air in an axial flow and the downstream baffle imparting a spiral swirl to the air and the atomized fuel. An axial flow blower supplies air to the burner tube.
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Description  (OCR text may contain errors)

United States Patent 1 [111 3,905,752 Miller 1 Sept. 16, 1975 [541 OIL BURNER 3,694,135 9/1972 Dancy et al 431/265 [75] n e tor: lliam F. Miller Youngstown, 3,694,136 9/1972 Floumoy et al. 431/265 Ohio Primary ExaminerEdward G. Favors [73] Asslgnee: Hy'way Heat Attorney, Agent, or F irmWebster B. Harpman Youngstown, Ohio 22 Filed: May 3, 1974 Appl. No.: 466,608

US. Cl .Q 431/183; 239/405 Int. Cl. F23M 9/08 Field of Search 431/265, 8, 182, 183, 185;

l 7 ABSTRACT An oil burner comprises a burner tube with an atomizing nozzle disposed axially thereof and between a pair of directional baffles, one downstream and the other upstream with respect to the nozzle, the upstream baffle controlling and directing combustion air in an axial flow and the downstream baffle imparting a spiral swirl to the air and the atomized fuel. An axial flow blower supplies air to the burner tube.

3 Claims, 4 Drawing Figures OIL BURNER BACKGROUND OF THE INVENTION 1. Field of the Invention:

This invention relates to oil burners of the type used in connection with apparatus such as a-rotary drier for drying stone, gravel, sand and the like.

2. Description of the Prior Art;

Prior structures of this type usually employburner tubes with atomizing nozzles located adjacenttheir discharge end and a source of combustion air such as a squirrel cage-blower or the like which results in an undesirable axial flowpattern of the air in the burner tube. This invention directs the combustion air in the burner tube in a true axial flow providing even flow and volume across the entire burner tube and equally importantly mixes the atomized fuel and the axially flowing air into a highly efficient spiral swirl pattern greatly contributing to efficient combustion of the fuel.

SUMMARY OF THE INVENTION An oil burner includes a burner tube with means directing combustion air therethrough and means therein regulating and directing the air in an even axial flow and volume and introduces an atomizing nozzle in said directed axial flow air to introduce the fuel and then mixes the axial flowing air and fuel by a downstream baffle having radially positioned members resulting in a spiral swirl mixture of the atomized fuel and combustion air.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevation with parts in cross section and parts broken away illustrating the present invention,

FIG. 2 is an enlarged cross sectional detail on line 2-2 of FIG. 1,

FIG. 3 is an enlarged cross sectional detail on line 3-3 of FIG. 1, and

FIG. 4 is a side elevation with parts broken away and parts in cross section illustrating a modified dual oil burner formed in accordance with the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT In its simplest form the oil burner of this invention is comprised of a burner tube having an inlet end 11 and a discharge end 12 such as may be located for example in a fire box 13 or other device in which the products of combustion are utilized. An axial flow fan 14 is positioned in the burner tube 10 adjacent the inlet end 11 thereof and is driven by a motor 15. An axial flow baffle 16 is located downstream from the fan 14 and includes a support frame 17 and a plurality of circular baffles 18, see FIG. 2, which are spaced radially with respect to one another with different degrees of spacing so that the volume and flow of the air delivered by the fan 14 will be even across the interior of the burner tube 10 and as indicated by the arrows 14 in FIG. 1.

An atomizing nozzle 19 is positioned axially of the burner tube 10 and downstream from the axial flow baffle 16 and is supplied with fuel under pressure through a tubular support 20. A secondary baffle 21 is located downstream from the atomizing nozzle 19 and is positioned in the burner tube 10 adjacent the discharge end 12 thereof. The secondary baffle as may also be seen in FIG. 3 of the drawings, comprises a plurality of radially positioned angularly disposed blades 22 spaced circumferentially with respect to one another and having a central area' inwardly of the inner ends of the blades 22 in whicha circumferential pattern of small angularly disposed vanes 24 are locatedzThe vanes 24 are formed of the material of the ceritral area of the secondary baffle 2l'and around a centralope'ning 25 therein through which the atomized fuel from the nozzle 19 is directed. I

It will be'observed that the arrangement of the secondary baffle 21 and particularly the fan-like blades 22 and the vanes 24 are such that a unique spiral swirling action of the air downstream of the secondary baffle 21 is created and is indicated by the arrows in FIG. 1 of the drawings. This action results in converting the uniform flow and volume of the air in t'he burner tube 10 to a desirable mixing action with the atomized fuel and results in substantially improved combustion in the fire box 13 or the like.

It will occur to those skilled in the art that under some circumstances it may be desirable to use more than one of the burner tubes 10 and the double baffles and atomizing nozzles as for example when the object to be heated is larger, etc.

By referring now to FIG. 4 of the drawings, a dual arrangement of the burner tubes 10 complete with the first and secondary baffles and the atomizing nozzles therein may be seen and it will be observed that they are the same as heretofore described in connection with FIGS. 1,2 and 3 of the drawings with the exception that the source of air comprises a single fan 27 driven by a motor 28 in a duct 29 common to both the burner tubes 30, each of which is supplied with fuel through supply pipes 31 and each of which is directed into a fire box or similar device 32.

It will occur to those skilled in the art that rather than the axial flow fans 14 and 27 referred to herein, various types of blowers or air propulsion means may be employed with the oil burner of the invention and that regardless of the source of air the first baffle 16 will establish a uniform volume and flow of air in the burner tube and downstream therethrough past the atomizing fuel delivery nozzle and that the secondary baffle will cause a unique spiral swirling action and intermixing of the atomized fuel and the air as it is delivered to the tire box.

It will also occur to those skilled in the art that ignition means, not shown, is necessary as customary in such oil burner installations and may for example comprise an electric spark producing device disposed in an appropriate area of the burner tube adjacent its dis charge end 12 as seen in FIG. 1 of the drawings.

The oil burner of the invention is not limited to the application of drying paving material or the like, but may be used with any device in which efficient combustion is desired. It will also occur to those skilled in the art that gas may be used as a fuel rather than oil and burned efficiently due to the unusual mixing spiral swirling action of the combustion air with the fuel as occasioned by the structure of the device of the invention.

Although but one embodiment of the present invention has been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention I Having thus described my invention what I claim is: 1. An,oil burner comprising a burner tube having inlet-and outlet ends, means for supplying combustion air to said inletend of said burner tube, a first baffle disposed in said burner tube inwardly from said inlet end, said first baffle comprising a pluralityof thin relatively wide circular vanes spaced radially with respect to the axis of said burner tube to direct said combustion air axially of said burner tube and a secondary baffle in said burner tube adjacent said discharge end thereof and having a central opening therein, a fuel delivering nozzle disposed in said burner tube between said first and secondary baffles and directed toward said opening in s aid secondary baffle and means for supplying fuel to said nozzle; a plurality of radially extending fan-like blades positioned circ'umfe'rentially in said secondary baffle and arranged to impart a spiral swirl to the axial flowing air in the burner tube so as to mix the same thoroughly with fuel delivered by said nozzle.

2. The oil burner of claim 1 and wherein each of said plurality of circular vanes is disposed at a small angle with respect to one another and with respect to the axis of said burner tube so as to direct said combustion air into a flowing column of uniform velocity and volume.

' 3. The oil burner of claim 1 and wherein said secondary baffle has a central area about said opening therein and inwardly of the inner ends of said fan-like blades and a plurality of circumferentially positioned angularly disposed vanes formed in said central area on the same plane as said fan-like blades and arranged to provide swirling turbulence in the combustion air and fuel flowing through said opening.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3301308 *Sep 8, 1965Jan 31, 1967Master Cons IncSafety control for portable heaters and like equipment
US3694135 *Jul 20, 1970Sep 26, 1972Texaco IncFlame retention burner head
US3694136 *Oct 5, 1970Sep 26, 1972Texaco IncOil burner
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4003693 *Mar 6, 1975Jan 18, 1977Combustion Unlimited IncorporatedFlare stack gas burner
US5122053 *Nov 17, 1989Jun 16, 1992Gert BastenApparatus and method for the combustion of liquid or gaseous fuels
US5735687 *Nov 22, 1996Apr 7, 1998Abb Research Ltd.For injecting a fuel into the combustion-air flow
US5810575 *Mar 5, 1997Sep 22, 1998Schwartz; Robert E.Flare apparatus and methods
US5846068 *Mar 25, 1998Dec 8, 1998John Zink Company, Division Of Koch Engineering Company, Inc.Flare apparatus and methods
US5961316 *Oct 25, 1995Oct 5, 1999Weil-MclainOil burner
US6036480 *Apr 1, 1998Mar 14, 2000Aos Holding CompanyCombustion burner for a water heater
US6880548 *Jun 12, 2003Apr 19, 2005Honeywell International Inc.Warm air furnace with premix burner
US6923643Jun 12, 2003Aug 2, 2005Honeywell International Inc.Premix burner for warm air furnace
CN101191450BNov 29, 2006Dec 22, 2010毛俊杰Engine fuel atomization spray head and fuel atomization spray device
EP0369950A2 *Nov 17, 1989May 23, 1990Gert BastenHeating installation
Classifications
U.S. Classification431/183, 239/405
International ClassificationF23D11/00
Cooperative ClassificationF23D11/001
European ClassificationF23D11/00B
Legal Events
DateCodeEventDescription
Dec 18, 1996ASAssignment
Owner name: CREDIT LYONNAIS NEW YORK BRANCH, AS AGENT FOR THE
Free format text: SECURITY INTEREST;ASSIGNOR:GENERAL COMBUSTION CORPORATION;REEL/FRAME:008283/0961
Effective date: 19961210
Dec 18, 1996AS06Security interest
Owner name: CREDIT LYONNAIS NEW YORK BRANCH, AS AGENT FOR THE
Owner name: GENERAL COMBUSTION CORPORATION
Effective date: 19961210
Dec 29, 1986ASAssignment
Owner name: GENERAL CCOMBUSTION CORPORATION, A CORP OF FL
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HY-WAY HEAT SYSTEMS, INC., A CORP OF OH;REEL/FRAME:004651/0728
Effective date: 19861103
Owner name: GENERAL CCOMBUSTION CORPORATION
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HY-WAY HEAT SYSTEMS, INC., A CORP OF OH;REEL/FRAME:4651/728
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HY-WAY HEAT SYSTEMS, INC., A CORP OF OH;REEL/FRAME:004651/0728
Dec 29, 1986AS02Assignment of assignor's interest
Owner name: GENERAL CCOMBUSTION CORPORATION, A CORP OF FL
Owner name: HY-WAY HEAT SYSTEMS, INC., A CORP OF OH
Effective date: 19861103