US1660348A - Liquid-fuel burner - Google Patents

Description

Feb. 2s, 192s. 1,660,348

` J. W. NEWBERY LIQUID FUEL BURNER Filed Naroh f2. 1925 3 Sheets-Sheet 2 ATTORNEY Feb. 28, 1928. 1,660,348

J. W. NEWBERY LIQUID FUEL BURNER Filed YMarch 12. 1925 Q5 Sheets-Sheetl 5 ATTORNEY Patented Feb. 4248, 1928.

UNITED STATES JOHN NEWBERY, OF ROCKVILLE CENTER, NEW YORK.

LIQUID-FUEL BURNER.

Applicationled March 12, 1926. QSerial IIo.`94,110.

My invention relates to liquid fuel burners and more particularly to heaters adapted to burn hydrocarbons. It has for its general object the improvement of wickless burners intended for use with liquid fuels, and its especial objects are the provision of a simplified structure adapted to-installatioii-for domestic use and particularly the adaptation of such aburner for inl0 st-allation in the standard type of kitchen range employing coal or other solid fuel.

lVith these objects in view and other features of advantage and utility hereinafter more specifically pointed out7 my invention consists in a burner having a plurality of nested tubular elements so spaced as to present continuous chambers therebetween. These elements may be cylindricalor other lclosed-curve form in horizontal section, according to the accommodation of the particular location. They are foraminated to permit circulation of gaseous fuel or air therethrough, and mounted upon a base having troughs alternating with air chambers cor- 'responding to the contour of the vertical chambers. This base is preferably a vcasting having troughs for liquid fuel formed therein, and open channels therebetween with upwardly extending tapered bars projecting from the sides of said channels, exterior to the troughs. These bars are tapered and adapted to guide the tubular elements to their seats upon shoulders upon the inner faces of the troughs, and to maintain such tubular elements in proper spaced.-

apart relation and in correspondence with like series of downwardlv extending tapered bars projecting from a plurality of plate members adapted to receive the tops of the 40 tubular elements upon shouldered 'seats formed on such members. These plate membersA rest upon the tubular elements and assist in maintaining them in spaced rela-j tion. The barsA projecting from the plates, between adjacent elements, register with the upwardly extending bars, to which they correspond in number and position. The air chambers intermediate the fuel chambers are thus divided into a series of vertical channels. The vertical. channels in the air chambers intermediate the fuel troughs are closed at their tops by said plates.

The accompanying drawings illustrate the preferred structural embodiments of my in- .55 vention. in which drawings Fig. 1 is an elevational end View of a burner mounted in the ash-pit of a coal range from which the fire-grate has been removed, and extending 'Y Fig 6 being removed, and parts being broken away to show underlying structure.

Fig. 3 is a vertical sectional view on the line of Fig. 2 as viewed in the direction indicated by the arrows 3 3. Fig.. 4 is a plan view partly in perspective and partly in section upon the broken line 4 4 as viewed in the direction indicated by the arrows 4 4. Fig. 5 is a fragmentary sectional view on the line 5 5 of Fig. 4 viewed as indicated by the arrows 5 5. Fig. 6 is a top plan view ofthe burner shown in Fig.- 1.v Fig. 7 is av perspective view of a standard kitchen range showing, as an alternative location, a burner when mounted in the {irebox upon its grate bars.

. Like reference numerals indicate like parts, throughout the severalfigures, ,in which 1 is -the ash-pit of a range and 2 the fire-box thereof, 3 the fire brick or like resistant material lining the fire-bok adjacent the oven,

and 4 a water-back. 5 are vertical screwthreaded supports resting upon thel plates 6' for adjusting the height of the burner base 31 and levelling same. 7is the outer tubular element of the burner, pierced with suitable apertures 34,A permitting the volatilized fuel to escape'and mix with air or other combustion supporting medium. 8, 9 and 10 are the tubular elements nested within 7 and similarly apertured. The base 31 has the outer lwall 11 of the trough 13. Upon the inner sides of the walls of the trough 13 are shoulders 12, upon which seat the tubular elements 7 and 8. A second trough 15 is similarly provided with shoulders upon which seat the`tubular elements 9 and 10. The upwardly extending bars 14 upon the base 31 serve to locate the tubular member 7. These bars taper upwardly and serve to guide` the tubular member 7 into its seat upon the shoulder 12 and to maintain it in burner.

the tubular elements', comparatively thin sheet metal withoutvdanger of its deformation by warping under heat.` The sheet metal,`as hereinafter explained, is preferable because it will heat up more rapidly and initiate the air currents, affording proper draft to the The tubular elements are maintained in their spaced-apart relation by bars extending downwardly therebetween in `correspondence with bars upon the base. These bars, as in the case of thetwo-trough burner illustrated, consist of three sets. Each set is carried by a plate adapted to rest upon,A

the tops of the tubular elements and to re- .,ceive the upper edges of these elements in maintain it in position exteriorly thereof;

20 is the inner plate having the downwardly extending bars 23 registering vertically with the bars 16 upon the base and serving to space apart and support the tubularjelements 8 and 9. 21 @is the innermost plate supporting the depending bars 24 which extend yto the inner wall of the trough 15 and rest thereupon and serve to locate and support the inner tubular element 10. The tubular elements as thus spaced apart intermediate the troughs afford van elliptical, vertical chamber, corresponding to the contour of the troughs, for the passage ofy air through the series of passageways formed between the registering bars of upwardly and downwardly projecting bars 16 and 23, respectively. f'Ihe plate 20 closes thisvchamber at the top and the air passes therefrom into the. adjacent spaces above the troughs 13 and 15 through the perforations in the walls of tubular elements 8 and 9., These ` elements 13 and 15, which are shown as of elliptical form, by a feed pipe 30 having the connection 31 to the trough 13 andthe connection 32 to the. trough 15. Drainage connections 33 are provided between 'the two troughs. Air is also suppliedto the inner face of the tubular element 10 by the central chamber beneath the plate 21, which is of slightly less diameter on its greater axis than the chamber, affording the channel 35. The annular plate 19 has a marginal flange 36 projecting beyond the exterior, face of the member 1 0 to baille the rising'air current and project' it horizontally. The apertured plates f 36', 37, hinged at 38,-seated on lthe plate 21, constitute ai adjustable bailie for dampering the heat and giving it direction. When either plate occupies the position indicated in outline as 39 in Figure 1, the air currents lcheaper to manufacture.

are thrown from the closed to the open side and projected as preferred, either against the water-back or oven side vof the fire-box. It is to be noted that the sets of corresponding bars 14 and 22, 16-23, and the bars 22, serv^e to steady the ascending air currents that rise therebetween against lateral deflection, and that the walls of the fire-box cooperate with the bars 22 in promoting this result; and that the bars function not only as guides, spacers and supports for the tubular elements and to prevent buckling or distortion of the sheet metal, but also as heatstorage and distribution media.

The oil feed forthe oilsupply pipe 30 'may be of any usual and approved type, and

is not shown, as it willV be readily understood, and is not a part of my present invention.

With the structure shown, the use of sheet metal in lieu of' thicker metal is possible, and by virtue of its limited mass, a quicker heating is attainable. Obviously, the burner so constructed is more compact, and-correspondingly smaller; it is lighter and also is By the location of the burner yvithin a fire-box andnext to the fire-brick or lining, a draft is established between theiouter wall-element of the burner and the said linin The blue-flame heat thus applied directy to the fire-brick adjacent the oven serves to expedite the heating of the oven. Tests with-a burner constructed as shown, placedin a coal range with threefourths of an inch clearance between the burner and the fire-brick, have resulted in higher oven temperatures (500o F.) than are attained by useof coal, and in reaching baking temperatures (250 to 350 in from forty-five to sixty minutes.

Certain features herein shown are disclosed in my copending application Serial No. 40,478,filed June 20, 1925, and are not herein claimed. Among the improvements thereover which I-desire more particularly to point out herein is the feature of dispensing with the outer housing of the burner previously used, as therein shown, and the utilization of the lire-box walls themselves as such housing, thereby substituting radiant heat for indirect heating by convection.

Having thus described my invention, which, it will be understood, is not limited in its useful application to the form or location shown and described. as preferential, but may be 'employed advantageously in a furnace or like heater a's well as 'in a stove or range, as shown, I claim: f

1'. A liquid fuel burner comprising a plucent tubular elements and f'to space same apart, and a top member adapted to rest upon said tubular elements, and a vplurality of downwardly projecting bars upon said top member adapted to extend between adjacent tubular elements and to assist in main taining same in spaced relation.

2. In a range, a combustion chamber, a combustion-resisting lining therein adjacent the oven side thereof, a pit below said chamber, a liquid\fuel burner having fuel troughs, and means for levelling same, mounted in said pit, a baille plate. on said burner and means for adjusting same to direct a part of the flame from the burner directly against said lining,

3. A liquid fuel burner comprising a plurality of nested, foraminated elements, a

base common thereto, open fuel channels in said base, a pair of tubular elements extending upwardly from said base on either side of each fuel channel and forming a chamber over each channel, said chambers being open at their tops; a series of bars projecting upwardly from said base from the exterior walls of said fuel channels and adapted to position the tubular elements relatively to said channels, said bars being spaced apart and dividing the space bet-Ween adjacent Walls of the fuel chambers into a series of vertical air chambers communicating at their lower ends through said base to atmosphere, and annular plates closing said air chambers at their upper ends 4. A liquid fuel burner comprising a plurality of pairs of nested, foraminated, tubular elements; avbase common thereto and adapted to seat said elements; spacing members between said tubular elements, whereby a `combustion chamber is provided above each fuel channel, and an air chamberis provided intermediate adjacent combustion chambers; and an annular plate above each air chamber and seated upon said tubular elements; and bars depending from each plate and projecting downwardly into each air chamber.

JOHN W. NEWBERY.

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