US1901983A - Oil burner - Google Patents

Description

March 21, 1933. VC, 1 PETERSON 1,901,983

OIL BURNER Filed Aug. 5, 1928 2 sheets-sheetl March 21, 1933.

C. J. PETERSON oIL BURNER Filed Aug. 5. 1928 2 Sheets-Sheet 2 Patented Mar. 21, 1933 Param erica onzarsrnna.' PETERSON, or cmoaeo, ILLINOIS g` on. nomma Application led August 3, 1928e Serial No. 297,300.

This invention relates to oil burners of the rotary type, or such as are provided with means for feeding or distributing the oil or fuel by centrifugal force.

The objects of this invention are to provide an improved liquid fuel burner which willbe simple in construction and particularly elfcient and durable in operation; to provide a burner of this character which is so constructed that the rotor or distributor head may be run at a high rate of speed, as for instance ten or twelve thousand revolu-V tions per minute whereby the fuel will be delivered in a finely divided condition for improved combustion; to provide a burner of this character having a particularly eilicient lubricating system; to provide the rotating members with a floating bearing tov permit' the proper centering thereof at high speeds; to provide a burner of this character with a distributing head or oil slinger having curved blades which serve to retain the heavier fractions of the oil and to give a more thorough and intimate mixture of all particlesof the oil with air before passing to the area of combustion; to provide a novel ignition device; and to provide such other advantages and improvements in construction as will be described more fully hereinafter.

In the accompanying drawings illustrating this invention;

Figure 1 is a sectional View of a boiler or furnace showing my improved oil burner 5 in position;

Figure 2 is an enlarged detail side view of the distributing head or oil slinger;

Figure 3 is a sectional plan view of the -motor and a part of the oil well or housing; Figure 4 is a fragmentary view of a portion ofthe distributing head illustrating the electric ignition; Y

Figure 5 is a vertical sectional view of the r burner with parts broken away for convenience in illustration;

Fi re 6 is a sectional plan view taken on the line 6-6 of Figure 5; i

Figure 7 is a sectional detail of the burner end of the supporting tube or pipe;

Figure 8 is a detail of the floating bearing;

Figure 9 is a perspective detail of the oil driving member of the oil pump;

Figure 10 is a detail of the flexible joint in the driving rod; A

Figure 11 is a sectional view taken on the line11-11 of Figure 5; and

Figure 12 is a sectional view taken on the line 12-12 of Figure 5.

In the particular form of the invention as shown in these drawings, the motor 13 which is preferably a shunt-wound -fm'otor is arranged in a horizontal position, and its driving shaft 14 is provided with a spiral gear 15. The motor frame is provided with a bearing 16 on which' is mounted the oil burner housing 17, the housing having a split collar or projection 18 and screw 19 for clamping it in position on the bearing. This housm comprises the main frame and oil well o the burner proper.4 One end of the housing is provided with a filling spout 20 which preferably projects toward the front of the motor and is provided with a cap 21 which is arranged'at a convenient position for receiving the lubricating oil.

A cylindrical lug or projection 22 in the housing 17 is threaded at its upper end, as

shown at 23, for engagement with the corre,

spondingly threaded end of a plug.24 which projects upwardly through the bottom of the well or housing. The upper end of this plug is provided' with a bearing 25 for a rotating shaft or spindle 26, this spindle being provided with a spiral Gear 27 which meshes with the gear 15 whereby the spindle is driven by the motor. The housing has an upwardly extending branch or projection 28 which is threaded at its upper end as shown at 29 to receive the correspondingly threaded lower end of an extension pipe or tube 30. The lower end of this tube has a bearing 31 for the spindle 26. This spindle is connected with an extension 32 by means of a tongue and groove joint 33, as shown particularly 1n Figures 5 and 10. i'

The upper end f the spindle 32 engages with a fioating bearing member 34, this member having a slightly concaved upper end 35 Jfor receiving lubricating oil and having an outwardly projecting ange 36 -at its lower end. The bore of the pipe 30` is slightly enbore and which is held in position by a bayonet joint 40. The upper end of the spindle 32 being relatively free, it will be seen that it may move slightly out of its axial posltion by rockingthe bearing member 34 on its flange or seat 36 against the resistance of the spring 38 which, however, always tends to return the bearing member to central or normal position. v

The upper end of the spindle 32 has a flange 4l' for receiving the centrlfugal fuel distributing head or oil slinger 42 which is clamped in position between the flange 41 and a washer 43 by means of a set screw 44. j

Thiscentrifu al distributor comprises a flat disk 45 havlng a plurality of discharge holes or orifices 46 and having a plurality of circumferentially larranged discharge in Fi blades 47, as shown particularly in Figures 4 and 5. The blades 47 are curved upwardly at their outer ends, as shown at 48, which serves to retard the heavier particles of the oil and mix the air therewith and also serves to control or regulate the shape or lform of the bla-ze to a certain degree. The blades 47 ing 67 into an annular passageway 68\formed between the pipe 30 and the collar 66. The oil ows from the passageway" 68 through holes 69 into the sleeve 39, this sleeve being provided with inwardly projecting lips ,70 for directing the oil onto the concave upper end of the bearing member 34, as shown in by means of a clamp 73. A wire or conduc.

tor 74 leads from any suitable source of electric supply to the terminal 71 'and the blades or burner members may be grounded for the return circuit. l

While the burner may be utilized inany desired manner, it maiyl be conveniently mounted in a furnace 75, as shown in Figure 1, be-

neath the boiler or water heater 76. In this installation, the motor is mounted on a base 76 and the burner proper projects upwardly through an opening 77 in the top of the furnace. A ring 78 is arranged adjacent to the top of the burner and has an outwardly proare also somewhat pitched or turned, as shown jecting flange 79 which is supported from the re 2, as in a fan or propeller. The fuel distributor head 42 has a slightly conical oil-receiving cup 49 which is secured to the lower side of the disk and which has an inwardly and upwardly extending lip 50, thereby forming an annular trough or receptacle 51. The fuel oil is discharged or fed into this trough through a nozzle 52 on the end of a feed pipe 53 from any suitable source of fuel supply. This pipe extends upwardly Aalong the .pipe 30, being held by means of a clamp 54 and having its upper end bent downwardly, as shown. particularl in Figures 1 and 5,1to direct the fuel into t e trough 51'.

The lower end of the shaft or spindle 26 is provided with an impeller 'or centrifugal pump blade 55 for-pumping the lubricating oil. This blade is preferably V-shaped at its lower end 'and fits in a correspondingly shaped hole 56 in the plug 24. The lubricating oil in the housin 17 passes through an opening 57 in the projection 22 into an annular groove 58 in the plug and from thence through radial holes 59 to a central vertical orifice 60`into a pump cylinder or bore 56;

From thence it is driven out through a hole or discharge orifice 61 into an annular groove 62 in the plug 24 and from there through a connection or nipple 63 to a pipe 64 which leads upwardly and is connected by means of a nipple 65 with a collar -66 which fits closel around the u per end of the pipe 30. The 011 passes from t e pipe 64 through an inlet open- `base 76 by posts 80. The ring also has an inmay pass outwardly around the lower 'end of the deflector. The lower end of the boiler 7 6 is preferably filled in with any suitable-refractory material 84 toform a combustion chamber at the bottom of thevb'oiler, as shown in Figure 1. v

When the burner is thus mounted in the furnace and the motor is started, the centrifugal distributor head or liquid fuel slinger which is rotatedat a comparatively high speed will cause the fuel which is discharged into the cup 49 to be thrown outwardly through the openings 46 onto the blades 47 and as the fuel passes over these blades, it will be thoroughly mixed with the air and the particles so divided and interrningled as to prepare the same for substantially perfect combustion. In this connection it will be noted that the pitch of the blades is such as to cause the air to sweep over the surface of the same, and on account of this pitch there is a tendency to force the al'r through the burner, thereby creating lll to a certain extent a forced draft which may be desirable in the absence of a suiiicient natural draft for the furnace. As soon as the fuel begins to be delivered to the head, electricity is supplied to the terminal 71 and sparks or arcs therefrom will be formed between the terminal and the adjacent blades, as shown in Figure 4, these sparks occurring between the respective blades as they pass through the sparking area, This fully insures the ignition or lighting of the fuelJ so that complete combustion will start substantially with the first discharge of fuel from the head.

As the fuel passes over the blades and becomes intimately mixed with the air, it is discharged into the atmosphere surrounding the head, and the fuel is burned in suspension in an annular blaze, substantially as'indicated in Figure l.y The air passing up beneath the head not only sustains the combustion but also tends to cool the Various parts of the burner.

As the spindle 26 starts to rotate, thel impeller blade56 will` begin to drive the lubricating oil from the housing or receptacle 17 upwardly through ,the pipe 64 to the bearings as heretofore described, this oil passing down from the top bearing through holes 85 in the bearing 31 onto the gears and other moving parts at the bottom of the casing, as shown in Figure 5. By means of this arrangement, complete lubrication is assured at all times. It will be noted thatthe sharp pointed impeller 56 will tend to break up any air bubbles that may occur in the oil so that the oil pump will not become air bound but will insure complete lubrication for the burner.

From this .description it will be seen that I provide a novel burner which is so compact that it may be readily installed in various furnaces and which has comparatively few moving parts, and the moving parts are completely lubricated at all times, thus insuring long wear for the burner.

discharged through said holes and over the blades.

2. A discharge head for an oil burner comprising a rotatable disk having holes therethroughand having circumferentially arranged blades, each of said blades being pitched at an angle to the plane of the disk and having its outer end curved upwardly, and ran annular receptacle depending from the disk with its outer wall diverging toward the top and coinciding with the outer edges of said holes.

3. An oil slinger of the character set forth comprising a disc having discharge openings therethrough and having integrally formed circumferentially arranged blades, said blades being pitched and being curved upwardly at their outer ends whereby the heavier particles of fuel passing over the same are retarded and an annular receptacle secured to the disc and adapted to discharge oil through said openings.

^ CHRISTEN J. PETERSON.

It will be noted that changes may be made burner for different conditions or uses; therefore I do not wish to be limited to the particular arrangement herein shown and described, except as specified in the following claims, in which I claim:

l. In a burner, the combination of a rotatable spindle, means for rotating said spindle, a cup secured to said spindle having a disk with holes therethrough and having circumferentially arranged blades, said blades being pitched and being curved upwardly at their outer ends whereby the heavier particles of fuel are retarded, -and means for supplying fuel to the cup, the arrangement being such that the fuel will be

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