US1818748A - Oil burner - Google Patents

Description

Aug. 11, 1931. w. H. PAscoE OIL BURNER Filed March 20, 1929 2 Sheets-Sheet l five/ 115 11 Z03; lbiam Eli/500e, W 5. I

Aug. 11, 1931. w, PASCQE 1,818,748

OIL BURNER Filed March 1929 2 Sheets-Sheet 2 y Ma Patented Aug. 11, 1931 PATENT; OFFIE WILLIAM H. I'ASCOE, OF CHICAGO, ILLINOIS on. BURNER Application flledjla rch 20, 1929. Serial No. 848,470.

The invention relates generally to oil burners used for domestic heating purposes. and more particularl to the mounting of the fuel nozzle and t e ignition means for such burners.

In the marketing of oil burners as carried on at the present time, the various parts of the burners are manufactured and sent to the dealers to be assembled and installed. In 0 many cases the dealers or the persons who install the burners are plumbers or other persons who are relatively unskilled in this particular line and who are consequently unable to properly adjust the parts of the burnor so as to cause the burner to operate with the eatest efiiciency.

Ti e general object of the invention is to provide a new and improved arrangement of certain parts of an oil burner whereby such 0 burners may be easily and economically in stalled by relatively unskilled persons so as to operate at their greatest efliciency.

A more specific object of the invention is to provide a novel unitary fuel nozzle and ignition assembly adapted for mounting adjacent a combustlon space so as to be adjustable relatively to said space without disturbing the relative adjustment of the fuel nozzle and the ignition means.

Another object is to provide a novel mounting forthe fuel projecting means and the ignition means for an oil burner which mounting comprises a frame adapted to be secured on a furance wall about an aperture formed,

therein, and a carrier member pivotally mounted in the frame in which carrier the fuel projecting means and the ignition means are mounted in fixed relation to each other so that when the relation of the fuel nozzle to the combustion chamber is varied by mov ing the carrier the relation of the ignition device to the fuelnozzle will not be changed.

Other objects and advantages will become apparent from the following description taken in connection with the accompanying drawings in which: j Figure 1 is a side elevational view partially in section, of a heatin plant embodying the preferred form of the invention.

Fig. 2 is an enlarged vertical sectional new of the nozzle and ignition mounting shown in Fig. 1 taken along the line 22 of Fig. 3 100 ing in .the direction of the arrows.

Fig. 3 is an enlarged front elevational view I of the nozzle and ignition mounting shown in Fig. 2.

Fig. 4 is a diagrammatic view showing the relation of the electric spark ignition terminals with the spray of fuel oil thrown from the nozzle.

Fig. 5 is a side elevational view, partially in section, of a heating plant equipped with an alternative embodiment of the invention.

Fig. 6 is an enlarged vertical sectional view of the fuel nozzle and ignition mounting shown in Fig. 5 taken along the line 66 of Fig. 7 looking in the direction of the arrows.

Fig. 7 is a front elevational view of the structure shown in Fig. 6.

While I have shown in the accompanying drawings and will herein describe in detail the preferred embodiment of the invention together with one alternative embodiment thereof, it is to be understood that this disclosure is given only for the purpose of illustrating the invention and is not intended as a limitation of the invention to the constructions disclosed. In the appended claims, I aimto cover all modifications and alternative so constructions falling within the scope of the invention as limited by the state of the prior art.

In the form chosen for disclosure herein the invention is embodied (Fig. 1) in a heating plant of a well-known character having side walls 10 defining a combustion chamber 11. Means is provided for spraying a combustible mixture of air and finely divided oil into the'combustion chamber 11 where it is ignited by any suitable means. a

' In the present instance the oil and air are sprayed downwardly into the combustion chamber 11 by means of a spray nozzle 14 mounted on one of the walls 10 of the com- 9 ,busti'on chamber, compressed air being furnished to the nozzle by a pump 15 while oil is furnished to the nozzle through a pipe 16 shown leadin from a suitable fuel supply tank (not electric spark may be created adjacent to or' in the spray of fuel thrown from the fuel nozzle 14.

In order that a construction of this character may be made to operate satisfactorily over a considerable period oftime it is necessary that a definite relation be established between the spray nozzle 1.4 and the spark ter minals 18 so that the spark passing between the terminals 18 will intersect the spray of fuel without having an excessive amount of the fuel deposit and carbonize on the spark terminals 18. This result may be attained by positioning the spray nozzle 14 so that the fuel thrown therefrom will pass the spark terminals 18 in substantially the relation which is shown dia 'rammatically in Fig. 4. It will be ap arent that when the parts are so positioned, t e spark passing between the two terminals 18 will intersect that arcuate portion of the spray which projects between the two terminals 18 and thus ignite the fuel without having an excessive amount thereof deposit on the terminals.

The invention contemplates that burners of this general type may be installed by persons whoare unable toproperly adjust the nozzle and ignition means, and in order to prevent faulty installations of such burners a unitary mounting is provided for the'fuel nozzle and the ignition means, which mounting ,may be adjustably secured on one of the walls 10 of the furnace so that the relation of the fuel nozzle to the combustion chamber 11 may be adjusted at will without disturbing the predetermined relation of the fuel nozzle and the ignition means. Such a unitary mounting may be assembled at the factory and the desired relation established between the nozzle and ignition means so that the installer will need only to secure the mounting on one of the walls 10 of the furnace and adjust the nozzle so that a spray of fuel will be thrown therefrom in the desired relatio to the combustion chamber 11.

In its preferred form this unitary mounting comprises a frame 20 adapted to surround an aperture 21 formed in one of the walls 10 of the furnace and to be secured in such position by means of bolts 22, said frame having a carrier 23 movably mounted thereon as by means of a horizontal pivot 24 extending through the carrier 23 and the opposite ends of the frame 20. Suitable apertures 25 and 26 are formed in the carrier 23 and the ignition terminals 18 and the fuel nozzle 14 are mounted therein so as to project inwardly of the furnace.

' When the frame 20 has been secured on the wall of the furnace, the carrier 23 may be moved about its pivot pin 24 so that the nozzle 14 will be positioned so as to throw a spray of oil downwardly into the combination chamber 11in the desired relation thereto and means is provided for securing the carrier 23 and hence the nozzle 14 in such an adjusted position. In the present instance this means comprises a pair of-screws 28 extending through opposite ends of the frame 20 so that they may be engaged with the ends of the carrier 23.

The carrier 23 is preferably made of such a size as to substantially close the opening in the frame 20 and in the form herein shown an inwardly projecting lip 29 (Fig. 2) is provided on the upper edge of the carrier 23 so that the carrier may havea greater range of pivotal movement without leaving an opening between its upper edge and the frame 20.

In the alternative form shown in Figs. 5 to 7 the invention is embodied in an oil burning plant adapted for the use of a continuous gas pilot ignition means. As illustrated in- Fig. 5, a furnace 30 is provided which is similar to that shown in Fig. 1 and which has walls 31 defining a combustion space 32.

A combustible mixture of fuel oil and air is sprayed downwardly. into the combustion chamber 32 from a nozzle 34 mounted on one of the walls 31 of the combustion chamber 32 and compressed air is supplied to the nozzle from a pump 35 while oil is furnished through a pipe 36 which leads from a suitable supply tank (not shown). The ignition means which is provided in this embodiment of the invention is of the continuous gas pilot type and a unitary mounting is provided for the nozzle 34 and the ignition means whereby the relation of the nozzle to the combustion chamber may be Varied at will without disturbing the adjustment of the nozzle relatively to the ignition means.

As shown in Figs. 5 to 7, this unitary mounting comprises a frame 38 adapted to surround an aperture 39 formed in one of the walls 31 of the furnace and to be secured to the wall 31 as by means of bolts, said frame having a carrier 40 mounted therein for pivotal movement about a horizontal axis. The carrier 40 is preferably pivoted midway of its vertical height by means of outwardly projecting lugs 41 formed on opposite edges thereof and pivoted to the sides of the frame 38 by pivot pins 42. The portions 43 and 44 of the carrier 40 lying" above and below the ject inwardly of the combustion chamber 32. The gas pilot ignition means is mounted on the lower portion 44 of the carrier 40 in such a position that a gas flame may be projected from the outside of the furnace through an aperture 45 formed in the carrier soas to ignite the spray of fuel thrown from the nozzle. In the form of ignition means herein illustrated an enclosure 47 having an aperture 48 in the top thereof is mounted on a depending portion 49 of the carrier 40 and a pilot burner 50 is positioned within the enclosure so that. when a sufficient amount of gas is supplied to the burner, the flame will be pro ected upwardly therefrom out of the aperture 48.

Asecond gas burner nozzle 51 is provided I mounted on the outside of the enclosure .47

and so positioned that a flame therefrom may be projected into the spray of oil within the furnace through the aperture 45 formed in the carrier. The ignition device is preferably arranged so that the burner 51 operates only during the operation of the spray device while the pilot burner is arranged to ignition nozzle 51 which is lighted by the pilot burner 50.

This means comprises a two-way valve designated generally as 53 which is operated by a pressure actuated diaphragm mechanism designated generally as 54, gas being supplied to the burners through a flexible supply line 51. This diaphragm mechanism 54 is connected by means of the pipe 55 to P the oil supply line 36 so that when the burner is started and oilis supplied to the nozzle 34 through the supply line '36, the diaphragm. will be actuated to open the valve 53 to project the ignition flame into the furnace.

' Means is provided for securing the carrier I 40 in adjusted position; thismeans' preferably comprisin a bolt 56 extending through the side of the rame 38 and engageable with the carrier. In order to provide for a greater range of pivotal movement of the carrier 40 means or feeding fuel under pressure to said nozzle, ignition means mounted on the outside of said carrier in fixed relation to said nozzle and operable to ignite fuel sprayed from the nozzle, means for securing said movable carrier on said wall in definite relation to said combustion chamber, and means operable by the pressure in said feeding mean-s for controlling the operation of said ignition means.

2. A fuel nozzle and ignition unit adapted for separate assembly and for attachment as a unit in an aperture in the wall of a furnace, said unit comprising in combination, aframe adapted to be secured to the wall which defines such an aperture, a carrier member pivotally secured in said frame, a fuel nozzle positioned on the innerside of said carrier member, an ignition device mounted on the outer side of said member in definitefixed relation to said nozzle whereby said nozzle may be adjusted relatively to said furnace without disturbing the operative relation between said nozzle and said ignition means, and means for securing said carrier in adjusted position.

3. A fuel nozzle and ignition unit compris ing, in combination, a frame adapted to be mounted on the wall of a furnace about an a erture formed therein, .a carrier member lvotally secured in said frame, fuel projectmg means mounted in said member and having its discharge end positioned on one side thereof, andan ignition device mounted on the opposite side of said member in fixed relation to said fuel projecting means.

In testimony whereof, I have signed my name.

WILLIAM H. PA'SCOE.

within the frame 38, an outwardly projecting arcuate lip 57 is formed along the upper edge yof'the carrier 40 while an arcuate web 58 is formed along the lower .edgethereof.

From the foregoing description it will be apparent that the invention provides an im.-.

roved 'oil burner construction which tends itself particularly well tothe modern system of marketing and installing such burners. It

will also be apparent that the invention provides an oil burner in which the relation of thespray nozzle; to the combustion chamber hereunto

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