Патент USA US2406398код для вставки
Aug-127, 1946. ' . ~ J‘. EJPERNE'T . 2,406,398~ , COMBUSTION IMPROVING APPARATUS Filed Dec_. 5. 1941 2 SheIetS-Sheet 1 Ailg. 27, 1946. - \ J, E, PERNET ’ ' COMBUSTION IMPROVING APPARATUS Filed Dec‘. 5, 1941 WWII‘ /0 I ‘. Y 2,406,398 ‘ _ 2 Sheets-She'et 2 /4 _ ' 2,406,398 Patented Aug. 27', 1946 UNITEDFSTATE 5‘ PATIENT‘ other. 2,406,398 ' COMBUSTION IMPROVING APPARATUS Joseph E. Pernet, Chicago, 111., assignor to Fuel Saver Corporation, Chicago, 111., a corporation of Illinois Application December 5, 1941, Serial No. 421,124 1 Claim.’ (01.11045) 1 This invention relates to combustion improving apparatus and more particularly to combustion control for use in connection with furnaces, steam plants, and the like. ' It is an object of the invention to provide an improved combustion apparatus by supplying sec ondary air over the fuel bed through a tortuous passage in addition to the primary air supplied in the usual manner. 2 arrows. The upper metal channel l2a extends the entire length of the space I l and is provided with openings l3 to enable the passage of air under pressure into a chamber I4 immediately above the metal channels, , The chamber 14 is preferably provided with a metallic header [5 having a substantially ver tical side wall I6. This side wall "5 is provided with a large number of very small perforations I‘! Further objects will be apparent from the 10 which latter are distributed throughout the length of the bridge wall substantially as shown in Figs. 1 and 2, so that air under pressure maybe forced In the drawings: through these small openings and delivered over Fig. 1 is a perspective view of a steam plant or the ?re bed in a widely distributed spray. Fire furnace, and illustrates one embodiment of the brick having correspondingly small holes there 15 invention. _ through'is laid over the front of the header It Fig. 2 is a transverse sectional view through as illustrated. the bridge wall‘ of the embodiment illustrated A blower I 8 may be driven‘by means of a motor in Fig. 1 and illustrates the secondary airchan speci?cation and appended claim. nels. ' I9 and this blower communicates with the bridge Fig. 3 is a detailed sectional view through the 20 wall heater space H by means of a suitable con duit 2!! so that when the blower is in operation, bridge wall and is taken on a line substantially secondary air; under pressure, will be delivered corresponding to line 3-—3 of Fig. 2. through the small openings l1 and over the ?re Referring to the drawings in detail, the em bed in a direction opposed to the normal direcbodiment illustrated comprises a furnace setting ' I having the usual side and end walls and which, 25 tion of draft in the furnace. It will be obvious that in normal operation, the in the present embodiment, is merely illustrative bridge wall becomes very hot and the tempera of one type of installation for which the inven ture of the air passing therethrough will be raised tion is adapted. The embodiment shown in the drawings comprises the usual ?re box 4, grates 5 to approximately 1200 degrees to 1500 degrees the ?re bed. Such draft installations are well known, and are, therefore. not shown in the pres The highly heated secondary air is delivered I over the entire extent of the ?re bed in the form of a spray and to accomplish this result, a com and ash pit 6, the front of the furnace being pro 30 Fahrenheit. It will also be understood that the length of the tortuous channel through which vided with the usual ?re doors 1 and ash pit doors the air passes while in the bridge wall may vary or dampers 8. in different installations and that any desired It will be understood that in installations of this number of metal channels may be used to accom..~ type any desired draft means may be used, for in stance, forced draft may be provided underneath 35 plish the desired result. ent drawings; however, it is intended that pri paratively large number of the small holes I‘! are mary air should be delivered in any suitable man ner underneath the ?re bed. and that suitable 40 provided. The size of these holes is necessarily greatly exaggerated in the drawings. 7 They are means be provided for such delivery. preferably only about one-eighth inch in di A gas chamber 9 is provided back of a bridge ameter. ‘ wall Ill and the hot gases and smoke pass over While particular embodiments of the invention the bridge wall and through this gas chamber and into the smoke ?ue 3, so that the bridge wall 45 have been shown, it will be understood, of course, that it is not desired that the invention be limited becomes very highly heated. thereto since modi?cations maybe made, and it The v‘bridge wall Ill is preferably made of ?re is, therefore, contemplated by the appended claim brick and is provided with an elongated medial to cover any such modi?cations as fall within space H extending substantially from end to end of the wall. ‘Within this space is a series of super 50 the true spirit and scope of the invention. Having thus described the invention, what is posed metal channels !2, alternate channels be claimed and desired to be secured by Letters ing longitudinally displaced as shown in Fig. 2, so as to provide an elongated tortuous air conduit between the metal channels and through which an air current may be directed ‘as shown by the Patent is: . A bridge wall for use with the ?re box of a 55 furnace, said bridge wall having a tortuous pas 2,406,398 3 . 7 . ‘ sage therein from the bottom of said wall toward the top,'a pressure chamber at the top of said Wall and forming a part of said passage, passages from said chamber into said ?re box, and a pas-‘ sage for connection'with means for forcing air through said tortuous passage into said cham-‘ her and outsaid openingsand againsta'the normal 4 V - vide a zigzag continuous passage from the air in let to said pressure chamber, each channel com prisinga pair of side ?anges and a Web extending between and connecting said ?anges, the ends of the webs and side ?anges of each channel being a ' oifset with respect to the ends of the Web and side draft in said furnace, said tortuous passage com-iv prising individual superposed channels of uni form cross section longitudinally offset to pro'-‘ 10 ?anges of an? adjacent channel; said Wall having means for closing the projecting ends of, said’ channels. ‘ JOSEPH E. PERNET.