Патент USA US2134972код для вставки
Nov. 1, 1938. R. L. HANEY GAS BURNER Filed Oct. 23, 1934 ‘ 2,134,972 2,134,912 Patented Nov. 1, 1938 UNITED STATES PATENT ,‘OFFI€E ' , ‘2,134,972 ' . GAS BURNER ' vRoy L. ‘HaneyK’San Francisco, Calif. Application October 23, 1934, Serial No. 749,546 4 ‘Claims. (01. 158—106) _ This invention relates to gas burners and has Ill’ ‘as by pipe sleeves or collars II which are for its object an improved heating burner espe cially adapted for industrial‘ use in heating burners and other apparatus, and‘ which will give high threaded right and left at opposite ends l2 so 5’ ef?ciency, operate under a great range of gas pressures without danger of back?re, which will be substantially silent in starting as well ‘as dur ing combustion, and in extinguishment. Other advantages are simplicity and low cost of con 10 struction, and freedom fro-m upkeep expense. In the drawing accompanying this speci?ca tion Fig. 1 is a plan view of a group or battery of my improved burners. Fig. 2 is an elevation of Fig. 1 shown partly in 15 section and showing the action of the gases. Fig. 3 is a cross section of a portion of Fig. 1 as taken along the line 3—3. The drawing is about half size of a commercial burner, consuming 60 cubic feet of gas per hour 20 at a pressure of 31/2 inches of water. Brie?y described, my improved gas burner com prises a gaseous fuel supply or burner pipe I with spaced gas outlet nozzles 2, and arranged over and above which outlets are deep refractory 25 blocks 3 provided with Venturi-shaped passage ways & centered respectively over the gas open ings. The blocks or Venturi tubes of heavy re fractory burnt clay or the like are elevated above the outlet nozzles and the latter are of a size, 30 determined by the gas pressure provided, so that a large amount of primary air is drawn into the Venturi tube in a manner to maintain the lower end of the combustion just above the throat of the Venturi tube as at 5, though the upper part may 35 project considerably above the refractory blocks. The spread of the gas 6 issuing from the nozzles 2 is shown in Fig. 2 and wherein the small arrows indicate the inward and upward rush of primary - air. 40 The refractory blocks are preferably formed in units of four or more Venturi openings in a row, and of heavy walls so as to build up and hold an intense heat during the operation of the burn ers as I have found this to add greatly to perfect 45 combustion of the gases within. The unit blocks are rectangular with vertical grooves or channels 1 formed along their sides, preferably at points that any of them may easily be removed; Also, the blocks of each run are slightly spaced as 13 so as to provide additional space besides that afforded by the confronting channels ‘I for sec ondary air which thus ascends upward around all sides of the highly heated refractory blocks to enter the ?ame just above them. The Venturi passages are relatively short below 10 the throat or point of constriction and several times this distance to the top of the block as this form has been found to induce the largest amount . of primary air and most thorough mixing and preheating before the point of actual combustion 15 5, though of course the latter will rise and fall with variations in gas pressure. Since the upper portions of the refractory clay blocks are main tained from a dull red to a red heat commencing about half way up the burner, the radiant heat 20 emitted is greately increased. With burners constructed as above, there is no possibility of back?re or “popping”, even if the pressure be repeatedly reduced to drop the ?ames to very small size in contact with the nozzles and 25 then be instantly raised to full pressure, for upon establishing full pressure for which the particu lar burner is adapted, the ?ame will quietly rise and enlarge to full volume. In fact a gas pressure just above a half inch of water will maintain the 30 ?ame well up above the throat of the Venturi tube. To adapt the burners for various pressures and qualities of gas it is merely necessary to use suit able size nozzles 2 which may be easily screwed 35 in the threaded openings along the burner pipes. Having thus described my improved gas burner and its advantages, it will be evident that varia tions may be made within the spirit of the inven tion and scope of the appended claims. 1. In a gas burner having a row of spaced gas outlet openings, a single, horizontally elongated generally rectangular block of refractory material formed. with a row of vertical through passage ways spaced to match said gas outlet openings, and means supporting said block over said gas midway between the gas nozzles, and at the ends outlet openings with its passageways respectively also by removal of the corners as at l’, and each 50 unit is supported above the burner pipe I by ?at metal U-shaped brackets 8 preferably welded to the pipe as at 9. In arranging the units for a large heating area, aligned thereover and with the block spaced out wardly from and above said openings, said pas sageways through the block being of Venturi tube form with the throat portion spaced further from the outer side of said block than from the side toward the openings whereby the portion of the block between adjacent passageways will form - any number of the burner pipes are connected 55 to side branches Ill of a gas supply header pipe 40 2 2,134,972 partition walls therebetween tapering from ap preciable thickness at the level of the throat to appreciably reduced thickness at the upper ends of the passageways. 2. In a gas burner, a gas supply pipe with a gas outlet opening, a refractory block having exposed outer sides and formed with a Venturi passageway aligned with said gas outlet opening, forming a combustion chamber and ?ame dis charge nozzle, the throat of the Venturi passage way being adjacent the lower end of said block and several times as far from the upper end as from said lower end, means supporting said block above said outlet with the lower open end of the 15 Venturi passageway spaced a substantial distance supporting one of the blocks over each pipe with the passageways aligned over the outlet openings, said passageways in the blocks being of Venturi tube form with the throat portion spaced ap preciably further from the upper side of the block 5 than from the side toward the outlet openings, and the outer adjacent side of each block being formed with vertical grooves on the side adjacent the other block to coact with the adjacent side of the other block for providing vertical air passage 10 ways between the blocks. 4. In a gas burner having a row of substantially uniformly spaced gas outlet openings, an elon gated block of refractory material formed with a row of parallel, elongated, through passageways 15 of generally Venturi-shape in contour in direction above said outlet opening for providing a space between the outlet and lower open end of the longitudinally of the passageways, means sup Venturi passageway for free access of air directly’ , porting said block in a position with said passage to the outlet opening at a point outside of said ways, respectively, disposed lengthwise in axial passageway thereto. ‘ 3. A gas burner ‘comprising a pair of parallel horizontal pipes each provided with a longitudi nally extending row of spaced gas outlet openings in the upper side thereof, a ,pair of horizontally 25 elongated refractoryblocks each being formed with a row of vertically extending passageways therethrough spaced, horizontally for vertical; alignment over the outlet openings of the pipes respectively, means on each pipe independently alignment with the gas outlet openings, the 20 throats of the respective Venturi-shaped passage ways being disposed at the ends thereof adjacent said openings whereby the portions of the block disposed between adjacent passageways form par tition walls therebetween tapering from appreci 25 able thickness at the throats to appreciably lesser thickness at the ends of the passageways remote from said throats. ROY L. HANEY.