Патент USA US2409131код для вставки
o@ s, 1946. l H.LANGE . 2,409,129 GAS BURNER Filed Sept. 16, 1943 @yf 2 Sheets-Sheet l 0cm s, 1946. 2,409,129 H. LANGE GAS BURNER Filed Sept. 16, 1943 2 Sheets-Sheet 2 27 Patented Oct. 8, 1946 2,409,129 UNITED STATES PATENT OFFICE 2,409,129 GAS BURNER Henry Lange, Quincy, Ill., assignor to The Quincy Stove Manufacturing Company, Quincy, Ill., a corporation of Illinois Application September 16, 1943, Serial No. 502,583 7 Claims. (Cl. 126-36) 2 1 This invention relates to improvements in gas burners. In domestic cooking ranges of the combination type, such as are designed for burning coal or wood as well as gas, it has been common practice bination range generally, the particular details of which are not pertinent to the present improve ments. The oven is shown as being provided with a conventional ñrebox Il for receiving solid fuel, ' the hot combustion gases from which are caused to circulate about the exterior of the oven for heating the same. For example, a top flue I2 is shown which communicates with the ñrebox the ñrebox, receives hot combustion products and through which combustion gases flow into from the i'lrebox for applying heat to the bottoms of the ovens. Such gas burners have produced 10 a vertical iiue I3 which communicates with a bot tom flue I4 deiined by the bottom I5 of the oven cool spots of substantial areas on the oven bot and the bottom wall I6 of the range. The hot toms, and notwithstanding the use of heat con combustion gases flowing into and through the ducting closure plates or lids in the openings bottom iiue Hi supply heat to the bottom of the above the gas burners, they have impaired the uniformity of the bottom heat supplied by the 15 oven and may ñow thence to a back flue (not to locate the gas burners within the bottom flues of the ovens, which, during use of a solid fuel in bottom flues when the ovens were heated from the ñre box. One object of the present invention is to pro vide a novel gas burner for the oven of a com bination range which occupies less area in the oven bottom than the prior types of burners of equal heating capacity, and thereby .permits a better distribution of bottom ilue heat whenever the oven is heated by a solid fuel. _ Another object of the invention is to provide an improved gas burner having a novel arrange ment of gas ports which insure that each flame will receive an adequate supply of secondary air and thereby prevent floating flames and incom plete combustion of the gas. An additional object of the invention is to pro vide a gas burner generally of tubular form hav ing a tubular combustion chamber within which the flames are conñned and supplied with sec ondary air for eñicient combustion. Another object of the invention is to provide a gas burner having an internal combustion cham ber forming member which can be removed readily from the burner structure for facilitating cleaning thereof. Other objects of the invention will be apparent from a consideration of the following speciñca tion and accompanying drawings wherein shown) whence they exhaust through an exhaust i'iue il'. For the lpurpose of heating the oven with gas when it is not desirable to utilize a solid fuel in the ñrebox II, a gas burner is positioned in the bottom flue I4 preferably centrally of the oven bottom. The gas burner is indicated generally by the numeral I8, and, as shown more in detail in Figs. 2 to 5 inclusive, it comprises an outer tubular shell i9, which may be of cast iron, for example, which is supported on the range bottom IS and extends upwardly into contact with the oven bottom I5. The shell I9 is shown provided with a stepped or flanged bottom portion provid ing annular flanges 20 and 2| through the former of which, as shown in Fig. 4, bolts 22 may be passed for securing the shell I9 in firm Contact with the range bottom I6. The range bottom is shown provided with an annular rib 23, which contacts the lower portion of the shell to assist in affording a gas-tight connection. The bottom surface of the flange 2| is also shown contacting the bottom I6 with intermediate sealing or gasket forming material 24 therebetween. The construction described provides adequate contact between the lower end of the shell I9 and the bottom I6 to provide a gas-tight connection therebetween, whereby combustion gases flowing within the ñue cannot pass beneath the lower Figure 1 is a broken front elevation of a com bination range disclosing an improved gas burner 45 end of the shell. The upper end of the shell I9 of a construction which is illustrative of the pres ent improvements; is also provided with horizontal steps or flanges 25 and 26, the former of which terminates in an upwardly directed rib 21 which contacts the lower surface of the oven bottom I5, while the flange Fig. 2 is a broken enlarged sectional elevation taken on line 2--2 of Fig, 1; Fig. 3 is a top plan view of the improved burner; 50 26 provides a seat for an inner tubular burner member hereinafter described. Fig. 4 is a sectional view taken on line 4-4 of The bottom wall I6 is provided with an open rig. s; ing 28 concentric with the burner, and the oven Fig. 5 is a sectional view taken on line 5-5 of bottom I5 is likewise provided with an opening Fig. 3. ' 29 concentric with the burner whereby secondary In Fig. 1 of the drawings, I0 indicates a com 2,409,129 3 4 not extend upwardly into the oven, the baille air from beneath the range can ilow upwardly 40 may be placed at a lower elevation within the through the central combustion chamber of the oven than where a conventional burner is em burner structure as mentioned hereinafter. The ployed. Lowering the level of the baille increases marginal portion of the oven bottom I5 adjacent the effective pan-holding capacity of the oven. the opening 29 is shown with a depending flange The baille 4i) is shown supported at its side edges 30 which seats upon the flange 25 for the purpose by lugs 4I. of affording a tight seal between the bottom I5 -When it becomes desirable to clean the burner, and the upper end of the member I9 to prevent the latches 32 may be swung to non-latching posi escape of combustion gases from the flue I4. The ilange 25 is shown enlarged at opposite por 10 tion with reference to the inner shell 33 and the latter lifted out, and cleaned readily and replaced tions to form ears 3l for accommodating latches without difllculty. 32 which may be moved to inoperative position The improved burner not only can be cleaned as described hereinafter whenever it is desired readily by removal of the inner tubular member to clean the burner. The depending flange 35.1 is shown cut away adjacent the ears 3I to accom 15 or sleeve 33‘, but improved combustion of the gas is effected by the unobstructed flow of secondary air modate swinging movement of the latches 32 to all sides of the individual port flames which is as shown in Fig. 4. The inner tubular member facilitated by the flaring shape of the inner tubu previously referred to is indicated by the numeral lar member 33 and by the circumferential and 33 and is adapted to seat at its lower end upon the flange 2| while its upper end is provided with 20 vertical staggering of each gas port with respect to adjacent ports. an outwardly directed flange 34 which is adapted While I have shown and described in detail the to rest upon the flange 2S and to make gas-«tight present preferred construction of the burner in Contact with the flanges 2l and 23. adapting the same for use in a domestic range, The inner tubular member 33 is of less diameter than member I9 and said members cooperate to 25 it will be apparent that various changes in de scribed details may be made within the spirit of form therebetween an annular gas distributing the invention. passage‘35. Gas is supplied to the burner through I claim: a duct 36 which, at its outer end, is provided with 1. In combination with spaced horizontal walls a conventional mixing valve 31 as shown in Fig. 2. Primary air and gas flow through the duct 35 into 30 of an oven gas flue provided with vertically aligned openings therein a gas burner positioned the distributing passage 35 and thence through between said horizontal Walls, said burner com a plurality of gas ports 33 provided in the inner prising an outer tubular member extending be shell or tubular member 33. The ports 38 are tween said walls and provided with means at the shown arranged in inclined rows to- provide a staggered arrangement of the individual ports 35 upper and lower ends thereof providing gas-tight seals with said walls at the margins of said open to insure to each jet of gas a supply of secondary ings, an inner tubular member positioned within air flowing upwardly through the opening 23. said outer member, said inner member defining As illustrated in the drawings, the tubular therein a central combustion chamber substan members I9 and 33 flare outwardly slightly in an upward direction and such shape of the inner 40 tially equal in length to the distance between said walls and being open at the upper and lower member 33 reduces the likelihood of the individual ends for permitting flow of air upwardly through flames contacting the inner surface of the mem the chamber, said tubular members having upper ber 33 and being cooled and causing a deposit of and lower contacting portions providing gas seals carbon on the wall. The jets of gas issuing therebetween and being spaced apart intermedi through the ports 38 are, by the construction dis ate said contacting portions to provide an annular closed, supplied with adequate quantities of gas distributing passage therebetween, and a plu secondary air whereby the flames are stable and rality of gas ports in said inner member for jet floating llames resulting from incomplete com ting gas from said passage into the stream of air bustion of the gas are avoided. The unimpeded in said chamber for combustion therein. flow of secondary air into the combustion cham 2. In combination with spaced horizontal walls ber afforded by the described construction of the of an oven gas flue provided with vertically burner provides an adequate supply of air to the aligned openings therein, of a gas burner posi individual flames, and hence a relatively large tioned between said horizontal walls, said burner number of gas ports 38 may be provided so that comprising an outer tubular member extending the improved burner obstructs a smaller portion ' between said walls and provided with means at the of the oven bottom I5 than a conventional burner upper and lower ends thereof providing gas-tight of equal heating capacity. When the oven is seals with said walls at the margins of said open being heated by hot combustion gases within the ings, an inner tubular member positioned within flue I4, the improved gas burner interferes less with the uniform heating of the oven bottom by 60 said outer member, said inner member defining therein a central combustion chamber substan the combustion gases than does a conventional tially equal in length to the distance between said burner of equal heating capacity. walls and being open at the upper and lower ends It will be seen that when the oven is being for permitting flow of air upwardly through the heated by combustion gases flowing within the flue chamber, said tubular members having upper and Iii, the gases can circulate freely about the gas lower contacting portions providing gas seals burner, and by providing a closely fitting lid 39 therebetween and being spaced apart intermedi within the opening 29 substantial heat conduc ate said contacting portions to provide an an tion by the lid materially reduces the cooling nular gas distributing passage therebetween and effect produced by the gas burner. a plurality of gas ports in said inner member for When the gas burner is in use, a baille plate 1343 jetting gas from said passage into the stream of which is positioned in the lower part of the oven serves to distribute the heat from the burner so air in said chamber for combustion therein, said that the oven temperature is uniform. Since gas ports being arranged in inclined rows spaced the flames at each of the ports 33 are conñned circumferentially of said inner member distances within the combustion chamber and generally do 75 greater than the distance between adjacent ports 2,409,129 5 6 within a row whereby each port of any row is municating with said tubular member, an inner tubular member -deñning an inner combustion chamber and coaXially positioned Within said iirst tubular member and coacting therewith to pro spaced from any directly subjacent port in an adjacent row a distance greater than the distance between the respective rows. 3. ln combination, a pair of vertically spaced oven walls defining therebetween a circulation line for het gases, said walls having a pair of aligned openings therein, a tubular member posi tioned in said openings and sealed to the flue walls at the margins of the openings to prevent = escape of íiue gases through said openings, an inner tubular member positioned in said first mentioned tubular member and annularly spaced therefrom to provide an intermediate gas dis tributing passage, means at the upper and lower ends of said members for sealing the respective ends of said passage, means for conveying gas vide an annular gas distributing passage there between closed at the upper and lower ends of said inner tubular member, and a plurality of gas ports in said inner tubular member arranged in circumferentially off-set oblique rows in com munication with said gas distributing passage for jetting gas into said combustion chamber for combustion therein. 6. A gas burner comprising an outer tu bular member, an inner tubular member inter mediately spaced apart and providing seals ad jacent the upper and lower ends to form an an nular gas distributing passage therebetween, to said passage, and a plurality of gas ports in means for conducting gas to said passage, and a said inner tubular member distributed over the plurality of burner ports in said inner tubular portion intermediate the ends thereof for direct 20 member communicating with said passage and ing gas from said passage into the interior of arranged in circumferentially off-set inclined said inner tubular member for combustion there rows for jetting gas into the interior of said inner m. tubular member for combustion therein and 4. A gas burner adapted to be positioned in a whereby secondary air passing upwardly through pair of vertically aligned openings in the horizon said inner tubular member can flow to each jet tal walls of an oven heating flue comprising a Without'obstruction by a subjacent jet. pair of coaXially arranged separable tubular 7. A gas burner comprising an outer tubular members having upper and lower contacting por shell open at the ends, an inner tubular member tions providing gas seals therebetween and defin Within said shell open at the ends to enable the ing an intermediate annular gas distributing pas- 2 free flow of secondary air axially through the sage between said members, releasable vmeans for saine, means sealing the ends of said inner tu latching said tubular members in gas sealing rela tion, means for supplying gas to said passage, and a plurality of cireumferentially spaced oblique rows of gas ports in the inner of said members for ¿letting gas from said passage into the interior of said inner member for combustion within the bular member to said shell and spacing the same apart annularly intermediate said sealing means to provide therebetween an annular gas passage, means for conducting gas into said passage, and a plurality of oblique rows of gas ports in said tubular member through which gas is jetted into latter. the interior of said tubular member for combus 5. In combination, an oven provided with tion within the secondary air stream flowing spaced bottom walls deñning therebetween a bot 40 through said member, said rows of openings being tom heating iiue and having registering open spaced apart circumferentially distances greater ings therein, a tubular member spanning said than the spaces between ports within a row to ñue in alignment with said openings and united insure access of the flame at said ports to fresh to said walls at the margins of said openings to secondary air flowing through said tubular mem prevent leakage of gases from said flue around ber. ~ said tubular member, a gas supply duct com HENRY LANGE.