US1749385A - Gas burner - Google Patents

Description

Match 4, 1930. J. H. KOLTS ET AL GAS BURNER Filed July 22, 1927 2 Sheets-Shee A awi a Q. M an- WVMW Plasma Mar. 4, 1930 v 1349 33;

i p UNITED: STATES PATENT, OFT-lea Jomr H.-KOL'1'S, or cm'ron, Ann nnwaim A. KRAH, JRQoF nrrrsnonn, mm,

SYLVANIA, 'ASSIGNQRS- ro rrrrsnon e warne- EA ER co ura'NY, or rams-d IBUBGH, rnimsynvanm, A conronario z or NEW JERSEY k ,eas BURNER.

, "a lication may m 2a, 1927, Serial 110. 207,617.

' This invention relates to burners such V as 'jeas'ily and cheaply manufactured, one which are used for-the burning of either natural will be cooler in service yet one which has or artificial gases and the burner of the increased efliciency with a small .flame' of 1 ,present invention has been developed in conhigh temperature, also-a burner in which v nection with and is-particularl v adapted for the rate of consumptionv is increased, and 55 use'imhot water heaters. It will therefore combustion more nearly complete with the I be' described in the preferred form it; has elimination of carbon monoxide In fact- A taken'in connection with such use although our improved burner approaches more closely 3 we wish itto be understood that the iirven- \than any other burner with which we are. I 1 tion 1s not necessarily limited to this class familiar the type of burner known as the 0 of service.- b L v blast burner wherein the flame is of the high- The invention is particularly adapted for est temperature. m l incorporation in what is *htown as a rose type The accompanying drawings are made to burner, i. e., a-burner in which-the outlet scale although slightly smallertlfan thea'verorifices are arranged ina somewhat extended age size burner. a J I horizontal plane. For instance a Hat bu'rner Fig.1 is a; plan viewof the burner; with a series of ontlet orifices arrangedin a Fig, 2 isa section on the line 22 of Fig. 1 s circle would .be known as a rose burner. Fig, '3 is a section on the line 33 of Fig. 1;

' However, there have been many different ar- Fig.4 is a section on .the line of Fig. 1; a 2o rangements of the outlet orifices in rose Fig. 5 is a section on the line 5 5 of Fig.1; 7o

burners and in the present instance .we have and y disclosed an arrangement or disposition oil Eigl'd' is a section on the line 6-6 of Fig. 2. the outletorifices which has proven to be I The burner casting comprises a head porexceptionally satisfactory'and which will be t-ion and a Bunsen mixing. tube B. In the described; in detail hereinafter. K *headthere is a hub or central distributing 75 The particular objects of ottr invention chamber 1 having a substantially flat horiinclude the provision of a burner of the char: zolltal upper surface 2 from ich l dlfl a acter described in which it is unnecessary plurality of gas distributlng channels 3. The .to use a gauze to prevent back-firing; to proupper face, of each radiating channel 1s vide a burner which will prpduce no carbon formed with a ridge or rib 4 so as to provlde 80 Q monoxide; to produce a burner which will downwardly sloping top surfaces or faces 5. clear itselfgof flame should ignition take The outer ends of the radiat ng channels place" at the outlet spud in the base of the are connected by means of a similarly ridged Bunsen tube. v peripheral channel 6. In the structure illus It isa further object of the "inventioneto trated the peripheral/channel 6 is broken at 35 provide a burner, having its .outlet orifices .the point 7 for the purpose of providing :1 Land secondary air passages so arranged astq s ace into which a pilot light can extend.

provide secondary air at the side of every his provision, however, is not necessary to outlet orifice asnvell as to arrange for the the invention as other types of p1lot"l1ght ,s 40 entrainment of the secondary air with as may be used which do not necessltatean openl little resistance as: possible and in connec-' ing in the peripheral channel 6 in which event .tion with these two objects we pr'ovide slopthe channel 6 can be a complete circle. ing upper faces for the burner upon which We have provided outlet orifices 1n' the ra- I 7 there little ,or no tendency for dirt diating channels 3 as well as n the per pheral 45 to accumulate. f i channel 6 and these orifices take the shape of V Our improvements enable us to make the a series of upstanding outletspuds 8 hav ng,

burner a one-piece casting which permits us preferably, small drill holes 9 (say from #44: I to provide a considerably lighter and cheaper to #52-gauge). These spuds we prefer to arconstruction. In a general-way, therefore, range so that they, extend upon theaverage' 50 we aimt'o provideaburner which can be more about 7/64 to inch above the top of the ridge 4 although different types might be used so long as the openings and the rest of the burner parts were properly proportioned thereto. V

The Bunsen mixing tube B is of especial design and construction and involves the use of a Venturi tube as shown most clearly in Fig.

2. The outlet 11 of the venturi is arranged to discharge upwardly in substantially the center of the burner head so that the streamof mixed gas and air will impinge upon the under surface of the flat face 2 from whence it is deflected outwardly to each of the channels 3 in substantially equal amounts. The chan nels 3 are arranged to taper or become smaller g the outlet'spud openings 9 as to enable the mixture to rush out at,greater speed and voluine than that at-which they enter. After the mixture passes the throat 12, the venturi, of course, acts to gradually increasethe velocity and the outletspuds are so proportioned to the rate of flow thru the Venturi tube as to prevent detrimental retardation of the in creased rate offlow. We believe that this plays an important'part in the ability of the burner to clear itself of flame should it become ignited at the inlet spud at the baseof the bunsen.

whatever supporting legs 13 may be necessary. The enlarged base 1a is provided with the usual transverse web 15 having the outwardly projecting annular collar 16. Upon this shoulder 16 is mounted the usual air shutter J 1'? adjustable by rotation upon the collar 16.

In ourimproved construction the collar'16 is internally threaded as'cl-early shown in Fig. 2 and intothese threads is screwed the memheir/12} which acts as a lock nutifor the air shutter 17 as well as a guide and lock for the needle valve 19. K p s 1 The housing 20 for the needle valveis slid into the interior of the memberlS "(see Fig. 2) and after the parts have been properly positioned, the set screws2l are screwed down into place. l I

The stem of the needle valve is supported at its forward end bymeans of the guide 22 which extends'in from the inner wall of the housing 20. The outer end of the stem of the needle valve is carried inthe bushing 23 and "is suitably packed as at 24:, the needlevalve being adjustable by virtue of the fact that it is threaded at 25 into theinterior of the bushing 23. By removing the cap member 26 the needle valve maybe adjusted uponturning the knurled nut27.

The housing member 2 0 has a lateral proneedle valve housing.

.bunsen: It is an economical burner to use hefazesamake' possible the entrainment of the p 110 duce the improvements specified.

jection 28 to which the 'gas supply pipe 29 is coupled.

The point at which the gas enters the Bunsen mixer' is, of course, known as the inletspud and with our improved burner it is important that this spud does not extend too far into the bell 30 at the base of the Bunsen mixer. We have found that the proportions indicated in the drawings (see especially Fig. 2) will give substantially the best results.

. Inasmuch as the amount of primary air entrained is of considerable importance in the successful operation of our improved burner, the peculiar locking arrangement which we have illustrated is particularly advantageous. It will be noted that the member 18 acts not only to lock the outlet spud in its proper position but also the air shutter. Furthermore it provides a guide for the inner end of the As will be seen upon inspection of the drawings, the burner can be made as a single piece casting which greatly lightens and cheapensthe construction, No gauze is necessary to prevent back flash and the burner will function without the production of carbon monoxide. Furthermore as already pointed out the burner will clear itself of flame should it be ignited at the inlet spud at the base of the particles of foreign matter which may fall upon them.

' It will be noted that secondary air can be:

drawn "up and past each series. or row of out-' v 5 on the burner head acting to discharge any we The burnerheadJ may be prov ded with let spuds '81- In other wordsalloutlet'spuds 10 are directly flanged by a secondary air pas sage. There are no spuds which are not immediately adjacent, to a secondary air ope=n- Furthermore. the tapering or sloping" secondary air with the least. possible resist-' ance. All. of these features cooperateto pro- "In conclusion it is desired to point out that I we have so far not been'able to determine from an exact scientific standpoint'just the reasons why our improved burnermakes possible the I a marked advantages-above described, We-

would like to say; however, that a burner construct'ed substantially as shown andtdescribed will function as specified although we do not mean to say that the proportionsand shapes of the various parts of the burner may not be altered and still obtain our improved re-v sults. \Ve believe that the advantages to which attention has been particularly directed are in a large measure incident to the use of a Venturi mixing tube which is arranged to discharge at substantially the center' of the distributing channels into a central .or hub chamber which has an imperforate upper face; In this way We are'enabled to deliver the gas at substantiallyequal pres- I sures at each and every outlet spud. Further-,

lnorethere is no detrimental retardation of theincrease in flow incident to the use of the Venturi because we have so proportioned the length and diameter of the outlet spuds to the length and diameter of the venturi as to enable the discharge of the gas to takegplace' freely and quickly so as not tolos'e the benefit y of the increase in speed. This, we believe, has

, function without back-flashing, as it a direct-relation to the ability offthe burner to clear itself of flame if ignited at the inlet spud as well as to the ability of the burner to danger of back-firing or is known in the art.

. ,VVeclainr: 1. A gas burner comprising in combination, a hub chamber with an imperforate face, a plurality of channels radiating therefrom,

' an-da Venturi mixer dischargingthru the lb ottomi of thehub perforate face.

chamber against said im 2 A gas burner comprising in combination, a central or hub chamber with an imperforate face, a-plurality of channels radiating therefrom, a. peripheral channel connecting the outer ends of theradiating channels, and a Venturi bunsen discharging upwardly thru 1 the bottom of the hub chamber toward the with top and bottom walls,

imp'erforate face. 1

' channels are supplied, and aVenturi bunsen i delivering "into the distribution chamber. 5. A gas burne'rcomprising in combination, a ce%alor hub chamber with an imperforate face, a plurality of channels'radiating therefrom with upper'faces longitudinally ridged,- upstanding outlet sppds on the sides of the ridges, secondary. air passages adjacent I ridge sides,

and a..Venturi bunsen discharg ,ing upwardly thruthe bottom. of the hub chamber toward said imperforate face.

6. Agas burner comprising in combination', a central or hub-chamber with an imlperforate face, a pluralityof channels radiat- Q iugtheref-rom'with upper'faces longitudinally ridged, a similarly'ridged peripheral channel connecting the outer ends of the radiating channels, upstanding outlet spuds on thesides ofthe ridges, secondary air passagesadjacent ridge sides, and a Venturi bunsen discharging ber toward said imperfor'ate face.

'let openings ondary air passages, each outlet opening be-f 7. In. 'a'gas'burn'er of the character de scribed the combination of a Bunsen tube with shouldered inlet opening for the gas, an air shutter rotatably mounted on the shoulder, an inlet spud extending'thru the shoulder, and guide means surrounding the spud and threaded into the shoulder, said guide means also acting to lock the spud and the air shutter in their proper positions. j, a v 8. LA rose type gas burner haying discharge orifices and secondary air passages cooper atively arranged so that each "orifice will be with a secondary Y flanked on at least ones'ide air passage, together with a Venturi bunsen delivering upwardly toward the burner face with substantially unimpeded discharge from the Venturi in substantially the plane of the bottom of the burner. L

9. A rose typev gas burner having gas tributing channels with sloping top aces,

on the sloping faces, and secing arranged'adjacent a secondary air passage, together with a Venturi bunsen deliver- 4 ingupwardly toward the burner face with substantially unimpeded discharge from the di s-. outventuri in substantially the plane of the bot- 1 tom of the burner.

In testimony whereof we have hereunto names.

signed our JOHN H. KOLTS.

EDWARD 4.1mm, JR.

- upwardly thru the bottom of the hub cham- 1

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