US1571637A - Gas burner - Google Patents

Description

Feb. 2 1926.

F. A. NIEBERDING GAS BURNER 3 sheets-sneak 1 Filed Jan. 30, 1922 fn emar. m ix i aw, M kw? 5 Sheets-Sheet 2 flaw gg wsw Feb. 2 1926.

' 1,571,637 F. A. NIEBERDING GAS BURNER Filed Jan. .50. 1922 3 Sheets-Sheet :5

57-5 [Hz/5272271.- 3M A 2) M,M MM

fiff 5 Patented F eb. 2, 1926.

UNITED STATES PATENT OFFICE.

FRANK A. NIEBEBDING, 0F CLEVELAND, OHIO; MARGARET H. NIEIBEEDING AD- MINISTRA'IRIX OF SAID FRANK A. NIEBERDING, DECEASED.

ens BURNER.

Application filed January 30, 1922. Serial No. 582,551.

To all whom it may concern:

Be it known that I FRANK A. NInBnRmNo, a citizen of the Unlted States, residing at Cleveland, in the county-of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Gas Burners, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

' This invention relates generally to the class of gas stoves or heaters, and has to do more particularly with an improved burner for use in stoves or heaters of this character,

this application being in part a division of my former application Serial No. 490,574, filed August 8, 1921.

Among the several objects of the invention are the provision of a burner through which a uniform distribution of jet openings is effectually accomp ished; to provide a unique ti for thejet openings which, while affording the maximum flow of gas, causes the gas to issue quietly from the openings under all adjustments of the valve; to so design the tip with respect to the jet, opening as to avoid the necessity of a gas-tight joint between the tip and sldes of the opening inasmuch as any g'as escaping between the periphery of the tip and the sides of the opening will .be entrained in the column of gas issuing through the tip and burn therewith without impairing the character of the flame; and to provide a burner wherein, notwithstandlng the free emission of the gas through the jet openings, propagation or back-firing is effectually avoided.

With these objects in view, and others hereinafter appearing, the invention may be defined as consisting of the combination and arrangement of parts set out in the claims annexed hereto and illustrated in the drawings accompanying and forming a part hereof and wherein Fig. 1 is a central vertical section from front to rear through a heater incorporating my improved burner; Fig. 2 is a fragmentary horizontal section through the heater, on a scale somewhat enlarged over that of the former view, the section eing taken at about the plane of the burner; fig. 3 shows the burner and adjacent stove parts in sectionatfront elevation; Fig. 4 is a section on. the line 44 of Fig. 2 and on a further enlarged scale; Fi 5 is a fragmentary perspective view, muc

as to all.

exaggerated as to size, of my resent preferred form of burner tip; and and 8 show modifications of the tip.

The heater casing ,comprises, generally, a front frame 1, side walls 2, and a back wall '3 (preferably of suitable refractory material) which extends between the rear edges of theside walls 2 and is supported upon a cross member 4 that is carried by and between the side walls and is connected thereto where said walls join the legs 5 that support the rear portion of the casing. A flue connection 6 is carried by a top wall 7, and into the large opening of the front frame of the casing fits a reflector 8, while a fender 9 is applied to the front frame below said opening.

Burner supporting ledges 10 are carried by the side walls 2 below the bottom of re- Hector 8, and in the present instance these ledges consist of angle bars which have vertical flanges 11 that are secured in any suitable manner to the side walls 2 (see Figs.

.1, 2 and 3).-

shells meetin a horizontal plane with 9.

Figs. 6, 7 v

broken joint at 17 which may be calked or M sealed with a suitable substance and drawn tightly together by bolts 18 which are engaged through ears 19 and 20 ofthe respective shells. Wings 21 extend from the ends of the bottom shell 16 and rest upon the ledges 10 to which they may be secured, as by bolts 22. The top shell is provided throughout its length with gas emitting openings 23 (hereinafter referred to as jet openings or orifices), the shell being flanged about the individual openings 'to provide bosses within the upper ends of which tips 24 may be inserted. These tips will be described in detail hereinafter. Shoulders 25 are formed on the interior of the shell 16 in the region of the joint 17, and a distributor 26 is held between the shoulder and the top wall of shell 15. This distributor is in the form of a transversely curved plate and has projections 27 which are adapted toengage the top wall of the shell 15 thereby to hold the edges of the plate against dislodgment from the shoulders 25. As will be seen more clearly from Fig. 2, the distributor is provided near its ends .with slots 28 and near its center with slots 29. The former slots enlarge gradually inwardly from their outer ends, while the latter slots decrease inarea quite abrd uptly from their outer toward their inner en s. top shell 15 is substantially uniform in cross section throughout its length, the bottom wall of the lower shell is gradually inclined downwardly from its outer end toward its middle portion where it is rovided with an opening through whic the interior of the burner communicates with a mixing tube 31,'the tube and shell having mating parts which are shown as fitted together with a broken joint, as indicated at 32, and which joint may be calked with a suitable sealing substance and 'thus rendered leak- (piroof when the shell and mixing tube are rawn together by bolts 33 which are engaged through cars 34 and 35 of the respective parts.

Attention is called particularly to the shape of the mixing tube. It will be observed from Figs. 1, 2 and 4 that the same extends rearwardly and downwardly from the burner and is then turned forwardly in a gradual curve where it terminates in a flared end that is substantially flush with the front of the casing. From Figs. 2 and 3 it will be seen that the tube is enlarged in a lateral direction as it approaches the burner so that its capacity gradually increases inwardly from a point adjacent its flared outer end. this latter condition is essential to a proper mixingof the gas with the air, and it is also.

a recognized fact that the mixin tube must be of suflicient length to allow t e gas and air to properly intermingle before they enter the burner. By constructin and arranging the tube as I do I maintain the proper length, provide a symmetrical design, and insure convenience in making connection between the valve (situated at the forward end of the mixing tube) and the gas supply ipe which, in the case of the socalled lii'eplace heater, comes a through the floor under and well toward t e rear of the heater, such'connection being illustrated in Fig. 1 and further commented upon hereinafter. This arrangement, therefore, eliminates a very common difficulty and annoyance that is experienced in the installation of the heaters, especially of the fireplace t pe. Furthermore, the goose neck format1on of the mixing tube effects a foreshortening which results in the valve being situated close up to the front of the heater and ermits of the use of a comparatively shalow fender.

As gas enters a burner, its natural tendency is to continue in the same direction in which it is traveling when admitted through the mixing tube. In the present instance this would result in a greater amount of gas ing from the jet orifices near the center It will be observed that while the It is quite generally known that of the burner than would pass through the ones toward the ends,were it not for the dis-, tributor 26 which, by virtue of its restricted erally toward the ends of the burner, only a limited amount of the gas passing through said openings. When the gas is deflected laterally, the tendency is for it to rush to the ends of the burner where its upward passage is retarded by the somewhat restricted .tube, the valve being thus positioned for a convenient attachment, as through a union 40, with the forward extension 41 of the openings 29, deflects a part of the gas latsupply pipe 42, these parts being shownin Fig. 1 'as they would appear particularly in a fireplace installation. The valve stem 43 projects forwardly and is equipped with the usual handle 44.

Associated with the jet openings or orifires of the burner are lugs 45 which serve to support in'proper relation to said openings, radiants (shown in dot and dash lines in Fig. 1) that rest against the back wall and are restrained at their upper ends from accidental tilting forwardly by a bar 51 that is carried, through arms 52, from the top wall 7, the arms being shown in the present embodiment as secured to the top wall through certain of the bolts 53 which attach the flange of the flue connection 6 to said wall.

Returning now to a detailed description of the present preferred form of tip, shown in perspective in Fi 5, the same comprises a frame preferafi y of sheet metal, that fits reasonably snugly within. a jet opening and has, on its upper edge at its four corners, outwardly and downwardly extending lugs 66 which fit over the corners of the boss that surrounds the jet opening. A suitable grouting material or cement may, if desired, be filled in about the tip to seal the joint between it and. the boss. However, in this form of the tip, as in the forms illustrated in Figs. 7 and 8, it is not regarded as important that the joint between the tip and boss be sealed or packed because any gas escaping about-the sides of the tip would naturally flow into the column of gas issuing through the tip and would not in any way impair the character of the flame. A series of crimped or corrugated strips 67 are forced into the frame 65, their upper edges being substantially flush with the top of the frame while the end portions of their lower edgesengage an inwardly directed flange 68 Ill Ill

that surrounds the lower side of the frame. I

According to the present design, the corrugations of the strips 67 give a honey comb appearance to the tip. The strips, being thin, have very little retarding effect on the flow of gas, but they are made wide enough to afford sufficient depth to the individual orifices as compared to the latters cross sectional area to efi'ectually prevent the flame from back firing into the mixer.

Fig. 6 shows a form of tip identical with that above described except that instead of having ears 66 at its corners, it has an outwardly and downwardly extending peripheral flange 70 which engages over the top edge of the boss and imparts to the structure a neat and attractive appearance. However, in this form of tip, it is necessary to thoroughly seal the joint between it and the wall of the aperture for otherwise the gas escaping about the tip and passing out under the flange 70 would be so far removed from the column of gas issuing through the tip that it would burn separately therefrom. Obviously, such a result would be quite undesirable for the escaping gas would frequently, if not always, burn beyond the radiants 50, while the normal and desirable action is for all gas issuing from the jet' openings to rise inside and burn within the hollow fret-work radiants.

Figs. 7 and 8 show modifications of the tip which will be readily understood from the illustrations; and in these, as in the cases just described, the tips are preferably made of sheet metal.

Having thus described my invention, what I claim is:

1. A burner of the class set forth comprising elongated top and bottom shells, means for drawing said shells together witha leak-proof joint, a mixing tube carried by the lower shell, the top shell having a se-- ries of jet openings, and means within the burner and retained in place by cooperation with the top and bottom shells for uniformly "distributing the gas from the mixing tube to all jet openings.

2. A burner of the class set forth comprising elongated top and bottom shells, the

, former having a series of jet apertures spaced apart throughout its length, a distributor comprising a plate situated withln the burner and extending substantially from end to end thereof, said plate being provided adjacent its ends with openings enlarging inwardly from the ends of the burner, and openings adjacen its. middle portion which decrease in area toward the center of the burner, and a mixing tube opening into the lower shell adjacent the middle portion thereof.

3. A burner of the class set forthromprising a hollow elongated body having a series of jet apertures along its top, a mixbody, and a deflector comprising a plate situated within said body and extending substantially from end to" end thereof, said plate being provided adjacent its ends with openings lncreasing in area inwardly from the ends of the body, and openings adjacent its middle portion decreasing in area towards the center of the body.

burner of theclass set forth comprising a hollow elongated body portion having a series of jet apertures spaced apart throughout its length and a mixing tube opening into said body portion at. about the longitudinal center'thereof, said tube extending downwardly and rearwardly from said body portion and then forwardly beneath the same, the tube enlarging gradually inwardly from its forward end to where it joins the burner, and a deflector situated within and extending longitudinally of the burner and having 0 enings of such shape as to effect a substantially uniform distribution of gas from the mixing tube to all jet apertures of the burner.

5. A burner of theclass set forthcomprising elongated top and bottom shells, the former having a series of jet apertures, radiant supporting and positioning lugs adjacent each aperture, the lower shell having an' opening, at its longitudinal'center, a mixing tube secured to the lower shell in register with said opening, and a deflector within the burner and extending longitudinally 'thereof and designed to effect a uniform distribution of gas from the mixing tube to all jet apertures.

6. Aburner of the class set forth coma the longitudinal axis of the casing rearwardly therefrom and thence downwardly and forwardly'beneath the same, a fuel control valve, and means supporting said valve forwardly of and in proper relation 'to the mixing tube.

8. A tip for burners of-the class set forth comprising a frame having an inwardly directed flange at its lower end and an outwardly' and downwardly flaring skirt at its upper end, and a plurality of corrugated 1 strips extending across the frame and cooperating to provide a series of individual jet apertures.

9. A tip for burners of the class set forth ing downwardly and forwardly therefrom com rising a frame having outwardly up a uel control valve, means supportin sai ten mg supporting lugs at its upper edge, valve forwardly of and in proper re ati'on and a" plurality of corrugated strips exto the mixing tube, and radiant positioning I tending across'the frame an contacting with lugs carried by the body adjacent the jet 1 each other to producea series of individual openings. jet apertures. In testimony whereof, I hereunto aflix my 10. A burner of the class described comsignature. prising an elongated hollow body having a e series of jet openings, a mixing tube extend- FRANK A. NIEBERDING.

Images