US1599015A - Gas burner - Google Patents

Description

Sept. 7,1926. 1,599,015 F. E. JACKSON ET AL GAS BURNER Filed Flbv 15, 92s 2 Sheets-Sheet 1 F. E. JACKSON ET AL GAS BURNER Sept. 7 1926. 1,599,015

Filed Feb. 15. 1923 2 Sheets-Sheet 2 Patented Sept. 7, 1926.

UNITED STATES PATENT OFFICE.

FRANK r. JACKSON AND momma A. warrmcronn, or Bananas-Inn, earn-01mm.

GAS Bosnian.

Application med February 15, 1923. Serial No. 619,077.

, Our present invention relates to gas burners; and it is a special object of our invention to provide a burner and an assembly of burners superior to those which are in 5 current use in, for example, the heating of steam boilers by the combustion of natural gas. p

fit is an object of our invention to provide a combination. of horizontal and inclined burners in such relative positions and of such size and form as toget a maximum heating effect and at the same time eliminate blowpipe effects upon heating surfaces; and we accomplish our results without the use of bafiles, checkerwalls, or other arrangements tending to a retardation of draft ora wastage of heat.

It is a further object of our invention to,

provide burner assemblies favorably placed with reference to a boiler or other surface to be heated and in which one set of burners may be utilizedto knock the top off from the flames of another set of burners; and, in this connection, we ordinarily prefer to employ a limited number of horizontal burners of high velocity to spread the flame and consequent heat from an assembly or assemblies of inclined burners placed at an angle to the horizontal burners.

A further object of our invention is to rovide a new method of burning fuel in a urnace by injecting jets of fuel in an inclined direction, giving a series of flames, blowing towards the furnace or object to be heated and at the same time blowing a strong jet or jets or fuel giving flames of high velocity, substantially horizontally so that the upper flames impinge on the tops of the inclined flames blowing the tops off and preventing a blow pipe effect on the boiler or ob'ect eated.

t is a further object of our invention to provide means whereby the respective sets of burners referred to may be separately controlled so that one set may alternatively be used alone, or may be used for preliminary heating, orgmay be used in other cooperative relationships herein described.

It is a further object of our invention to include an aperture permitting the introduction of an oil burner; and we prefer to utilize the mentioned aperture in effecting the ignition of one set of burners, this set being preferably so arranged as to be capable of igniting an additional set or sets.

It is a further object of our invention to provide means favorable to a reignition of our burners in case of a momentary interruption of a supply of gas thereto.

It is a further object of our invention .to-

provide individual burner units which shall deliver and mix air and gas in suitable proportions and which shall be durable but nevertheless capable of easy insertion and removal.

It is a further object of our invention to associate with our burner units suitable fireresistant protective materials, such as fireclay or plastic fire-brick, suitably molded; and we prefer to so mold the mentioned materials as to form expanded continuations of the mixing passages provided by the metallic portions of our burners, the construction being such that the velocity of the gases may be suitably reduced, and the resultant flames may be kept at a moderate level, the heating effect being favorabl distributed.

It is a further ob ect of our invention to provide castings into which our burner units may be; easily and securely fitted, these castings being preferably made in separate sections which are adapted to be assembled in any desired number; and we prefer to so form these castings that they may support the individual burners or burner units at an angle and at the same time afford a suitable foundation for the plastic material which we prefer to mold thereon, to provide flaringextensi'ons at the exit ends of our respective burners.

Further objects of our invention will appear 'from the following description and the appended claims.

It is believed that the general charactercal section taken at right Fig. 3 is a view showing a preferred type of supporting castings to which our burners may be secured.

Fig. 4 is an enlarged detail view showing completely but one burner unit of a preferred type.

Fig.' 5 is an enlarged detail view on the line 55 of Fig. 4, showing the bayonet connection by which each of our burner units may be supported in a suitable aperture formed by gaps in supporting castings which are preferably laid edge to edge, as best shown in Fig. 3.

Fig. 6 is. an enlarged detail view on the line 66 of Fig. 4.

Figs. 7 and 8 are diagrammatic representations of alternative embodiments of our invention.

Referring in detail to the form shown in Figs. 1 to 6 inclusive, it will be understood that 1 is a boiler or other receptacle to be heated, this boiler being supported by known means or by the end walls 2, and heat-being confined by means such as the lateral walls 3. Adjacent the front wall we may provide a valved inlet pipe 4 for the introduction of natural gas by the branch pipes 5 and 5' to a series of high velocity urners 6. By means of, for example, valved extensions 7 and 7 we may carry. an additional quantity of gas through a manifold M and suitable connections 8, 9 and 9 to a main set of burners 10.

' The individual units comprising the mentionedmain set of burners are preferably of simple construction/and each may comprise a cylindrical element 11 flared at its receiving end 12 to provide for an ample intake of air and provided at its opposite end with means for engagement with an suitable supporting-means, lugs to provide a bayonet connection being shown at 14, and a circumferential collar at 1 5. It will be understood that the pipes and fittings by which the gas is led to the respective burn-.

ers may be, for example, standard malleable fittings, and that the gas is'delivered to each burner through an aperture 16 at or near the center of the base thereof, the parts referred to being held in their desired relationships by means of the apertured webs 17 at the base of the respective burner units.

. As a convenient means for the support of the respective burner elements or units in their assembled relationship, we prefer to provide castings 18, which are preferably formed of identical units adapted tobe placed edge to'edge in any desired number, the units being respectivel gaps 19 which, when a p urality of these elements are suitably assembled, are adapted to receive and support a corresponding number of rows of the mentioned burner elements, notches 20 being provided in the castings to permit of the insertion of the provided with lugs 14 upon the respective burner elements, and the distance between the lugs 14 and the collars 15 being adapted to the thickness of the supporting plates, as best shown in Fig. 4.

Whethenor not our burners are set, as we prefer to place them, at an angle relative to the surface to be heated, we prefer to provide extensions of the mixing chambers thereof by suitably molding upon the assembled castings 18 a fire-resistant material such as plastic fire-brick 18 imparting thereto such a configuration as shall provide an expansion at the exit end 21' of each mixing chamber, this expansion preferably to be such that the area at the exit shall be substantially greater than the cross section of each burner at its narrowest point: for example, four times that area.

By the construction referred to, it will be understood that we effect a relative retardation of the gaseous mixture, softening the character of the flame projected by the set of burners referred to, this result being at-- tained without any diminution in the heating effect thereof. To enable a set of inclined burners-to be supported in the manner best shown in Fig. 2, we may provide the castings 18 with horizontal extensions 22 and 23, respectively adapted to be built into, for example, the front, wall and the floor of a furnace; and wemay construct the floor referred to of separate units 24 of fire-resistant material supported by any suitable means such as the I -beams 25.

As already mentioned, the preferred embodiment of our'invention involves the provision of a set of auxiliary or high velocity burners 6, shown as extending through the front wall of a furnace, and unprovided with the mentioned flaring extensions of their respective mixing chambers, it being our intention that these auxiliary burners shall produce an intense horizontal flame, adapted to knock the top off from the flames produced by. the main body "of burners already described and referred to as inclined burners. The constructionreferred to has been found very advantageous, as tending.

mediately above the respective series of inclined burners, the latter being shown as staggered in their relationship to the mentioned auxiliary burners. I To permit the use of an oil burner in case deposits.

of, for example, interruption of gas supply, we prefer to provide an aperture 27, through which an oil burner may be inserted; and we may use this aperture also in the igniting of the'auxiliary burners 6, it being practicable to insert a suitable torch through the mentioned aperture. It will be understood that, as occasion may require, we may use the auxiliary burners 6 either as a sole means of heating, or as a means for the igniting of the inclined burners, or as a means for warming u or as a means for suitably deflecting the ames of said inclined burners.

It will also be understood that, while we have shown the high velocity burners as arranged horizontally and substantially cylindrical, they may be arranged at any suitable angle, and-an actual choke effect may be provided by constricting the outlet therefrom, to impart a higher velocity to the resulting flame.

In Fig. 7 wehave disclosed one of the innumerable alternative constructions in which our invention maybe embodied. In this form of our invention we may employ two main sets 28 and 29 of burners, similar to those shown in Fig. 2, and set at an angle suitable to the existing conditions, these sets being suitably spaced apart, and having their tops knocked off by a plurality of flames from the high velocity burners 30 and 31, the latter of these being adapted to project its flame sli htly downward, and suitable regulating valves for the respective sets of burners being shown at 32, 33, 34 and 35.

In Fig. 8, we have shown an alternative construction in which no high velocity burners are employed, two main sets of burners being oppositely inclined, so that each has a deflecting effect upon the flames from the other, this arrangement being especially advantageous when a strong central heating is required.

In the use of the last-mentioned form of our invention, the respective sets of burners may be controlled by means such as the valves 36, 37, and it should be understood that in all cases where we employ sets of burners fixed in groups such as are shown in Figs. 1, 2, 7 and 8, we prefer to bring the gas to both ends of themanifold thereof, in order to be able to equalize the pressure throughout the set and we may also provide means such as the'valved pipe 38, shown in Fig. 2, for the withdrawal of oily It will be seen from the above-description that we have developed a novel method of burning fuel shown in connection with a boiler but that the principles involved have many general uses.

In brief the method may be described as injecting combustible jets at an angle forming flam'es having comparatively slow velocity in an inclined direction and blowing jets of fuel having flames of a high velocity so as to impinge on the tops of the flames of low velocity, having the so-called effect of blowing their tops off and preventing actual contact of the inclined flames with the boiler or object to be heated. This prevents the so-called and injurious blow torch effect.

Our method may be utilized as shown i1 Fig. 2 with a single bank of inclined burners and with a single set of horizontal burners injecting fuel of high velocity as shown in Fig.2, or two or more banks may be utilized as in Fig. 7 with two or more substantially horizontal or slightly downwardly inclined blow torch jets impinging on.

the inclined jets.

It is obvious also that our method of burnin fuel in this manner may be applied to oil gets as well as gas jets in that after the oil is ignited the reaction will be between jets of burning gases and not between solid oil jets, therefore the effect will be much as described above.

It is also obvious that for certain purposes the jets of slow velocity could be inclined downwardly and the jets of high velocity be blown below such jets impinging on the flames and thereby changing their direction. This type of flame may be utilized for casting heat principally downwardly.

Many other modifications of our principle or method it is believed will be obvious.

It will be understood that various features of our invention may be independently used, and also that various modifications will be possible without departure from the spirit and scope of our invention, as the same is indicated above and in the following claims.

WVhat we claim is:

1. A burner mounting having an inclined wall, the said wall being formed of a series of bars, each bar having recesses in its edge with notches formed in the recesses and notches of adjacent bars registering to form gaps therethrough, the set of bars forming a substantially'flat wall surface and a series of cylindrical burners having segmental In S at their ends adapted to pass throu the said, notches in the assembled bars orming a bayonet type connection, a collar fitting against the outside surface of the bars, and a molding of plastic fire resisting material formed on the bars between the burners, said material being molded to form flared discharge nozzles, the material between the adjacent nozzles meeting in a pointed edge.

2. A burner mounting comprising a series of castings in the form of bars, each bar having a series of recesses, the recesses being pos1tioned to register with adjacent bars, the bars forming substantially a flat surface with gaps therethrough, a series of cylindrical burners secured in said gaps, and a molding of plastic fire resistin material formed on the bars between the urn-- ers, said material being molded to.: form flared' discharge nbzzles, the material between the adjacent nozzles meeting in a pointed edge. p

In testimony whereof we have signed our names to this specification.

FRANK E. JACKSON. RICHARD WALLINGFORD.

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