US2390509A - Oil-burner construction - Google Patents

Description

'- Dc. 11, 1945. CARTER 2,390,509

OIL BURNER CONSTRUCTION Filed Aug. 3, 1940 4 Sheets-Sheet 2 lNVENTOR GEORGE I. OIRTER BY Q A ORNEY 1945' G. 1. CARTER 2,390,509

OIL BURNER CONSTRUCTION Filed Aug. 3, 1940 4 Sheets-Sheet 3 ICZRTER -34- BY 2: I

INVENTOR ATTORNEY tion.

become known as the twin.

Patented Dec. 11, 1945 UNITED STATES PATENT OFFICE OIL-BURNER CONSTRUCTION George Irving Carter, Teaneck, N. J assignor to General Oil Heating Corporation, West New York, N. J., a corporation of New Jersey I Application August 3, 1940, Serial No. 350,392

16 Claims.

* Thisinvention relates to oil-burner construc- Oil-burning, as, for instance, by means of the spray nozzle in domestic installations, includes the factor of economy of space, as well as convenience of access, as, for instance, for adjustment or repair. It is an object of the invention to provide a compactly constructed oil-burner in which parts requirin adjustment are easily and conveniently accessible for adjustment, even while the burner is in active operation, firing the furnace, and without danger to the adjuster.

An oil-burner construction, commonly used in domestic installations, is the so-called type. Oil, atomized by means of a nozzle-is burned with air brought into immediate association with the atomized 011. Many diflerentattempts have been made to obtain proper association of the. atomized oil and the air in order to make combustion as complete as possible bepass to-the surfaces of the furnace at which the heat is to be absorbed. One method found successful, especially in furnaces having small combustion chambers, is that in which turbulence in the air for combustion is induced by causing the air to follow a helical path at least at the time of its association with the atomized oil to be burned. 'It is an object of the invention to provide compact apparatus for producing turbulence in the flow of air with relation to atomized oil by causing the air to flow along substantially helical paths relative to the atomizinsmeans. a

Where an ordinary furnace assembly is located in a domestic heating installation, space is generally at a premium. This generally becomes acute when access both to boiler and to oilburner must be considered. It is an object of the invention to provide apparatus in which the, 40

extent of the oilburner outside the furnace is reduced so as to facilitate assembly of the burner with the furnace, as well as access to the burner for repair or adjustment.

The oil-burner used her to illustrate certain features of the invention is of a type which'has d-ucts lead to a single blast or fire tube. The

' air-ducts cooperate with the blast tube in such A pair of airmade easilyand without necessity for dismantling the installed burner, Or any substantial part thereof.

This result may be effected by leading the airducts vertically downwardly to the blast tube, which may be disposed in a direction transversely of the extent of the air-ducts, and then mounting the fans for the air-blower and the motor for driving the fans immediately above the blast tube and not in line or in the :same plane with the blast tube. In such an assembly, it is possible to associate these rapidly moving parts so that vibration will be eliminated substantially completely as'an item in producing noise when the burner is in operation. For such purpose, resilient mounting of the motor and the fans as well as the oil-pump, to dampen out or absorb such vibrations completely within the burner casing, is utilized.

20 Access to the atomizing' nozzle and to the elecforethe hot gases derived from the burning oil 1 trodes is of material operating importance. It is an object of the invention to provide a means for assembly of electrodes and nozzle in an oilburner by which the ready removal of electrodes 25 and atomizing nozzle may be eflected, as, for

85 burner. It is an object of the invention to mount the transformer so that, when it is moved into position to make certain of the burner parts accessible, the transformer is disconnectedautomatically from the electrodes.

An air-director may be used in conjunction with the blast tube to control the shaping of the flame. It is an object of. the invention to provide an air-director, adjustable with relation 5 to the oil-spray nozzle and other parts of the and even while the burner is in operation.

within .the blast tube, and elect cyclonic ,ilow

of air past a nozzle which is atomizing the fuel. It is an'obiect of the invention to arrange ducts and blast tube in such manner that adjust- It is an object of the invention to mount fans, motor and oil-pump, all on a single shaft, and to support all'from simple bearings associated with the blower housings.

Other obiects of this invention will be set forth hereinafter, or will be apparent from the dements, aiter erection of the oil-burner, may be as scrim and the drawings in which-is illustrated the'threaded many varied relations without departing from the spirit and scope of the claimed invention, of which the exemplifying embodiment, herein shown and described, is intended only to be illustrative, butnot to show all the various forms and modifications in which the invention might be embodied.

n the drawings in which the-same reference characters refer to the ame parts throughout:

Fig. l is an elevationalperspective view of an oil-burner. construction. embodyin the invention;

Fig. 2 is an eievational perspective view of the oil-burner construction shown in Fig. 1, as seen from the rear or adjusting end of the construction, one of the feet being broken away toillustrate details of the construction; 7

Fig. 31s a view similar to Fig. 2, the transformer housing being swung to open position, the valve assembly being removed. and the blower casing covers being shown lifted out of secured position;

Fig. 4 is a perspective view ofthe assembly of sleeve, electrodes and nozzle; 5 r

Fig. 5 is a plan view of the oil-burner construction of Fig. 1, certain of the parts being shown in dotted, ordot-and-dash lines;

Pig. 6 is a vertical cross-sectional view taken transversely of the oilburner construction of Fig. 1, as seen from the line 8-8, certain of the parts being shown inelevation, the spider for support ingtheelectmdessndnoazlebeingshownindotand-dash lines: 7

Pig. '7 is a vertical crcss-sect'onal view substantially on the line 1-1 of Fig. 8. the ciipump being shown as if the front plate of the housing. were removed, certainof the parts being sbown-in elevation: and Pig. 8 is a detail erbs-sectional view blow tially onthe l ne 8-4 ofl'ig. 6, parts of the casingbeingbrcken aminsecticn. In theoil-burner II shownon wings. blast ducts i2 and il leadto a,"gun"-;

dra

.or blast tube it from blower wells is and". Blast tube it duets l2 and It, and wells itand llmaybedeflnedinaslnglecast ng leg 24 of a Fahsped in maybe tooutside wallfloftheductsanda'flangeextension 14 of the ductwalls.

At the enda die; 26 andarms II are screwthreaded openings 38 to receive threaded bolts 38. These bolts extend into threaded. openings ll in feet 42. Lock nuts It may comer-ate with bolts 38,

' 'openinu.andtheieettolock-the feet in any 'podton into which the feet may be adjusted. Binoe threeof these feet are provided, the level of the apparatus may be adjusted ac-.

l 'iange ll may. have an 'arcuatesectionll to cooperate with a crlindrical flange ll, which forms the rearmost portion of tube 1!. Tube It, "in its forward aeoti I is a substantially cylindrl'cal member ha inl a cylindrical bore '2. Into thisbore.attheforwardsectionofthetube,may

its

' threaded:open ngs in bosses ill-associatedwith be sued air-deflector u. I'hh air-deflectortahes theformofasleevehavingapassage'lithrough afrusto-conicalsectionltandacylindricalsection". Bectiontlhasasmoothouterwalltoilt substantiailysnuglywithinbore l2. Arodflmay have a threadedendfltmnedupwardlyandsecuredinaholeltinsectiontl. Therodextends downwardly'into a passage" formed in a projection II from the cylindrical formation of casting 22 at tube It. A spring 12 encircles the rod and'engages against a stop pin ll on the rod, andalsoagainstapartofwailfl. Therodhas a threaded end extended through an opening It in wall 82, and receives a wing-nut ll. Thus, as the wing-nut is turned, air-deflector It will move with relation to front end of the blast tube.

-of tube It. Substantial porflons of walls 8 between ports I! and M are faced to provide a seat 88 for receiving a sleeve ll. Sleeve so includes a cylindrical section 02 having ports It and it formed therein. The extent of these ports may be substantially the same as the extents of ports 82 and Il. Sleeve it is positioned within seat ll and immediately. in cooperation with ports '2 and II so that ports and I respec-' tively may be brought into cooperation with ports 82 and 8 4.

As sleeve II is rotated within seat ll. p rts it and cooperating with ports '2 and 84, are

' elective to graduate the amount of opening of ports 82 and i'roma maximumtoaminimum. By rotating the sleeve in the direction indicated radiallyoftheaxisoftubeiiwillbecovered. It is thus possible to maintain the character of l2 and I4 intotube II at as tangential, that is, immediatel in inner wall at of the tube. includes a shoulder .8 against which m a the position wit in the tube. In order sleeve within the tube, a removable "y be secured in position against flange suitable securing devices such as screws I through lugs ill, and engaging a; Sleeve so tasan mamia flange m for reception around a frustro-conical projection III III. This interiitting relationship on between flange ill and projection ll! further functions as a bearing ,for the alone A screw .ill,'enga'ged.in flange lit, may be extended through a slot ill in wall It! to be accessible at the rear end or the burner. By loosening screw Ill, sleeve it may be rotated within'the tube without removing the sleeve or any of the other parts from the assembly, but merely b pushing on the screw. when the sleevehasheeu adjusted into the desired position. acrcw Ill is tightened asainstwall ill'atalot lll,andthesleeveisthus .iixed initsadiusted position. Ducts l2 and it, in addition to horizontal portions Ill and III, tum upwardly into-vertical sleeve Il may abut to'retaln the burner as a unit. At the ou er face of projection II2, opening yond the center-line of tube I8. and are enlarged into wells. I8 and 28 at substantially equal positions above the center-line of the tube. Wells I8 and 28 are half sections of blower casings I28 and I28. The other half sections of these blower casings are provided by covers I88 and I82; The covers are complementary sections, which, together with wells I8 and '28. form casings I28 and I28, whichcooperate with squirrel-cage fans I84 and I88 at the opposed ends of a shaft I88. The

covers are retained in position by suitable securing means, such as screws I48 passed through lugs I42 on the covers and lugs I44 on thewells. The fans, driven by suitable means, produce equally effect ve blasts through ducts I2 and I4, so that equally efiective blasts will issue past ports 84 and 88 of sleeve 88.

A pair of openings I48 are formed through conical projection H2, and receive insulators I48 of electrodes I88. Opening I82, formed through the center of projection II2, receives oil-tube I84; the coupling of tube I84 in opening I82 maybe produced by any suitable means, as, for instance, by a threaded connection. At the free end of tube I84, a nozzle I88 is positioned. A spider I88, disposed to contact with the walls of tube I8, may receive tube I84 through a central passage. and thus serve tolocate tube I84 and nozzle I88 centrally of tube I8. A clamp'I88 may engage a projection I82 at the inner face of conical projection H2, and may be shaped for reception over portions of insulators I48. Thus. when clamp I88 is tightened by suitable means such as screws. both electrodes will be locked in position against separation, and in the position in wrich they may have been adjusted prior to assemb y in tube I8. Thus electrodes I88 and nozzle I 88 may be adjusted externally of the burner, and then, merely by slidng them through the rear opening in flange 48. and by engaging proper screws I84 with lugs I88 and bosses I88. t-e entire assembly, including sleeve 88, may be located in I82 receives the end connection of a flexible tube I84 which leads to the outlet I88 from oil-pump I88. Oil-pump I88 is mounted and fixed in a casing I18. which, in turn, is fixed to and thus made'substantially an integral part of casing N2 of motor I14. 'El'ld bearings I18 for shaft I88, which extends between fans I84 and I86 and through motor I" and oil-pump I88, are fixedly related to the motor and the oil-pump by being made substantially integral with casings I18 and I12. A ring I18 of cushioning material has an opening I88 through which a bearing I18 is received. The outside face of the ring is received between a pair of straps I82 and I84, forming a clamp I88; the straps being shaped to provide a substantially cylindrical cavity to receive the ring. One strap I82 may have toes I88 resting upon arms I88 of the other strap I84 and secured thereto by any suitable means such as screws I82. Arms I88 may extend beyond toes I88 to have rests I84 formed at the ends. Rests I84 may be U-shaped in cross-section. Arms I88 bridge openings I88 in inner wall I88 of wells I8 and 28. and rest on top edges 288 of walls I88, with rests I84 seating over the edges and restraining clamp I88 against lateral displacement. It is thus made possible, by taking of! covers I 88 and I82 and disconnecting flexible tube I84 and a flexible tube 282 to-be described, to remove the entire motor-oil-pump-fan assembly from the apparatu as a unit. Openings I88 cooperate with openings 288 in covers I88 and I82 to form air inlets for the blower casings.

A bracket 284 on wall 82'may provide for connection to the source of oil. To a threaded open- 5 ing through this bracket, tube 282 will be connected, although it may be desirable to have tube 282 free. Tube 282 is connected to inlet 288 to the oil-pump on casing I18. Within casing I18 is also located pressure relief valve 288 and strainer 2I8, all of which may be of conventional construction, and require no specific. description here. Outlet I88 from the strainer provides a connection for flexible tube I84.

Extending rearwardly from projection III are electrode ends 2, which are formed as contacts. A wall 2I8 may be mounted pivotally on lugs 2" formed on wall 82. This wall may be formed so as to provide an inner chamber 228 within which are positioned terminals 222. These are-the terminals of a transformer 224 which is mounted on the outside face of wall 2I8. A connection box 228 located on wall 82 provides the necessary cables 228 and 288 for electrical connection to motor "4 and transformer 224. Terminals 222 include a pair of spring fingers 282 so located that, when wall2I8 is swung to bring its leg 284 into abutment with wall 82, spring fingers-282 will contact ends 2I4 of the electrodes. Also. when wall 2| 8 is in this position, access to screw H4 and to wing-nut I8 is prevented, or hindered. Thus. it becomes necessary, in order to make any adjustments on the burner, to cut off the ignition mechanism of the burner. The adjustments may be made while the burner is in operation. and after ignition has been completed, but not during the first stages of commencement of a run. After ignition has been effected. wall 2I8 may be moved clear of the ads justing means and so that ends 2 no longer 40 are in contact with terminals 222., Then sleeve 88 or air deflector 84 may be adjusted. Wall 2I8 may be retained against wall 82 by engagement of a screw 288 through leg 284 with wall 82.

Many other changes could be ei'fected in. the particular apparatus designed. and in methods of operation and use set forth, and, in specific details thereof, without substantially departing from the invention intended to be defined in the claims, the specific description .being merely of an exemplifying embodiment in accordance with the statutes.

What is claimed as new and useful is: V

1. In oil -burner construction, a blast tube having a substantially open firing-end, the other end 55 of the tube being closed. the tube having a laterally opening port, means communicating with the tube through said port for producing a flow of air in the tube from the port to the firing end, electrodes supported in the tube and extending from the tube through the closed-end. and a transformer mounted on the tube for movement into and out of electrical circuit-making relation to the extending electrodes.

2. In oil-burner construction, a blast tube having an open end in the direction of movement of the blast therethrough, means for initiating a blast of air, an end wall for closing the other end of the tube, means assembled with the end wall for directing the initiated blastinto a substantially cyclonic path from the closed end to the open end of the tube, and means accessible on the outside. face of the endwall for adjusting the directing means.

3. In oil-burner construction. a blast tube havus ing an open end for directing the blast from the---i tube into ai'urnace, the other end or the tube being closed, communicating means forming a jimction with a lateral wall of the tube adjacent ing an open end for directing the blast from the tube into a furnace, the other end of the tube being closed, communicating means adjacent the closed end and leading into the tube through a lateral wall thereof, means for initiating a blast of air in the communicating means, a sleeve mounted in the tube at the closed end, the sleeve having a port for cooperation with the communicating means to direct the blast into a substantially cyclonic path within. the tube, and means extending through theclosed end for adjusting the sleeve.

5. In oil-bumer construction, a blast tube having an open end for directing the blast from the tube into a furnace, the other end of the tube being closed by a wall, a pair of ducts adjacent but forwardl from the end wall, the ducts opening into the tube through a lateral wall thereof and extending laterally and upwardly away from ously driven means in the wells for blasts of air in the ducts, and means in the tube beyond the controlling means for supplying fuel in dispersed iorm.

9. In combination, a pair of blower wells posithe tube to form substantially a'u with the tube, v

means for initiating blasts of air in the ducts, the communication between the tube and the ducts including means to discharge the initiated blasts into substantially interlaced -c yclonic' paths within the tube, and means extending but forwardly from the end wall, the ducts opening intothe tube through a lateral wall thereof and extending laterally and upwardly away from the tube to form substantially a U with the tube, and means for initiating blasts of air in the ducts,

- v the communication between the tube, and the ducts including means to discharge the initiated blasts into substantially interlaced cyclonic paths within the tube.

"I. In combination, a pair of blower-wells posiapairot from the wells and then towards each other, a tube having means for closing one end thereof, and having ports opening through its lateral walls, the ducts having communication with the tube through the ports, a sleeve rotatable in the tube for adjusting simultaneously the eiiective opening of the ports, the sleeve beingimmediately contiguous to and being capable of manipulation through the closed end of the tube, simultaneously driven means in the wells for producing blasts of air in the ducts, and means in the tube beyond the controlling means for supplying Incl in dispersed form.

10. In oil-burner construction, a blast tube having an .open end and a wall closing the other end. electrodes extending into the blast tube towards the open end from the end wall and projecting outside the blast tube through the end wall, airsupply ducts immediately at the end wall leading away from the lateral walls of the blast tube, means in the blast tube for controlling air-flow from the ducts into the tube, the controlling means having manipulating means extending through the end wall, a transformer for the electrodes, the transformer being mounted on the blast tube to move towards and away from the end wall, and means on the transformer and the electrode projectionsfor breaking the circuit betwen transformer and electrodes when the transformer is moved away from the end wall to make the manipulating means accessible.

11. In oil-burner construction, a blast tube awaytrom the endwall,andmeansonthetransformer and the-electrode projections {or breaking the circuit between transformer and electrodes when thetransformer is moved away from the .end wall to make the adjusting-movement-eflectingmeansaccesslble.

12. In oil-burner construction, a pair of blower wells positioned in spaced apart relationship and i3. Inoil-burner constructiomapeirotblow-'- er wells positioned in spaced'apart .relaticmhip andhavingwallsiacingeachothencoversectiom iceassembly on the top edges of the walls thewellstoiorm blowercasingaablast duets leadin downwardly from the wells connectedwithandsupportedbytheblssttube. asinsleshaitestendingintobothblower iansontheend soitheshaihamotor onthe shaft between the facing walls, the motor having a,soo,soa

a casing, bearings for the shaft, the bearings ber and supported by the blast tube; a single shaft extending into both wells, ians on the ends of the ahait.'a motor on the shaft; the motor having a casing, an oil-pump for the oil-burner. the shaft extending through the oil-pump, the oilpump being secured against rotation relative to the motor casing, means (or delivering oil irom the oil-pump in mixing relation to the air blast of the blast tube, bearings for the shaft, the bearings being fixedly related to the casing, thebearings being engaged by the facing walls of the wells and thereby restrained against rotation.

15. In oil-burner construction, a pair of blower wells positioned in spaced apart relationship and having walls facing each other, a blast tube, ducts leadlngdownwardlyiromthewellsandconnected with and supported by the blast tube, a single shaft extending into both wells, fans on the ends of the shaft, 9. motor on the shaft between the facing walls, a casing for the motor, bearings for the shaft fixedly related to the casing, and resilient means secured to said racing walls and engaging the hearings to prevent rotation of the bearings and to cushion the support or the bearings on the walls. I

16. In oil-burner construction, a pair 01' blower wells positioned in spaced apart relationship and having walls facing each other, cover sections for assembly on the top edges of the walls of the wells to i'orm. blower casings, a blast tube, ducts leading downwardly from the wells and connected with and supported by the blast tube, a single shait extending into both blower casings, fans on the ends of the shaft, a motor on the shait between the facing walls, the motor having a casing, bearings for the shaft fixedly related to the motor casing, and resilient means secured to the top edges of said facing walls and engaging the hearings to prevent rotation oi the bearings and to cushion the support of the hearings on the walls.

GEORGE IRVING CAR'IER;

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