US1475599A - Fuel-saving device for furnaces - Google Patents

Description

- N. J. RUSSELL FUEL SAVING DEVIQ'E FOR FURNACES Filed Jan. 12 1923 moon 9. RUSSELL, B CHIG'AGQ,

rum-some DEVICE roe. nonsense.

Application fled January 12, 1823. Serial Silo. $153,862.,

or vernents in furnoces, hut porticnlerl to devices for feeding air to :hirn, en es neciolly to that type of turn known sohoiler furnaces, wherein n, holler having e pliirelitof speced dues for the essoge oi domes, eat and goses from the re-hox or firepot, is employed, and it consists in oertoin peculiarities end novel features of the constrootion, combination and arrangement of the verious parts thereof es will he here innfter more specifically claimed.

Broedly speeliing, the object of the inreno tion is, the provision of certain improve ments end devices applicable to or used in connection with boiler-dues or firetloes of e furnace, tor eugmenting the eifective pow-t er of fuel "for heating purposes, end else for the generotion of steam.

llflore specifically, an object of the invention is to provide at device for outomoticelly admitting, heating and dischor ing oir into furnaces, in 511 e menner that the supply of air to the finnocee, will, through the medium of the device, he heated to e hi h degree of temperetune, in such o condition discharged or distrihuh ed in the fire-hex or pot thereoilto corneringle with the combustible and volatile gases emenoting from the burning fuel, where sold heated air and oxygen will he utilize to increase from it given amount of luel, the combustion of the combustible gases, or of the flee carbon released during the horning of such fuel, thereby molding to o, morked degree the formation cl smoke, yet attaining o maximum amount of host units from the fuel.

While I have shown in the eccompenying drawing device embodying my improvements. applied to o horizontally mounted hoiler and will hereinafter so describe it, yet it Will become obvious from the following description and explanation, thet the device is applicable to boilers Whether their dues are of the upright, diagonally disposed, or horizontal type, and for this reason, l do not desire to he limited, except where so mentioned, in the nnnexed'cleinis, to only perticuler type of holler In the accompanying drawing,----

Fig. 1 o cross-sectional token on line 1-4 of Fig. 2, as indicated by the arrows, of e portion of o boiler, illustroting the some equipped with e fool sewing device emhodying the Fig, 2 is e longitudinal control sectionel' View through the i'nrnooe end h 16,

enlarged longitudinal sectional View oi one of the hoiler fines, showing it the heel device.

Corresponding nnnoerels of reference refer to like cits throughout the diflerent views of the v The furnace cnsin as ewhole is designoted by the owners 5, end ee nsuel, hoe at its front end e fire-hon 6, end. at its rear end eoother cheniher 2', which will herein he termed the combustion chamber, from which lends on outlet line or pipe 8 for discharge of smoke-end nnconsorned porticles of combustion. The fire-hos 6 is of course provided no usual, with o grate not shown, and sold, hex or chamber is loceted ot the front end of the boiler 8 which is horizontally mounted in the usual or any preferred troy Within-the cosin between the chonimrs ll end 1?, and hes es shown, e plurality of lireilnes l which speced from one another and surrounded by we tor within the lJ-U'llGF. @ne of the dues ll, hy preference lmetedeentrolly with respect to group of dues, its rear end closed in any suitable manner but usually lo means of a lug 10 of-eshcstos or some 0t er e1ihstentioll r non-combustible materiel.

Extended through the upper portion of the furnace casing reerwerdly of the rear end of the holler 8 into the combustion Z s on eir intake pipe 11 which has connecled on moons of a coupling 12 hr ech ni e 13 which is extended throng e iisgoosed orifice in the plug or closure end. has mounted on its end with in the line 9 an annular chamber casing 142 of less diameter then the inner diameter of the said fine. The casing 1 has extended centrally from its front end a tube 15 which communicates at its front end with another chamber casing it? "which is also annular in shape and of less diameter than the inner diameter of the flue 9 in which it is loceted.

The seeing is provided in its periphery with one or more openings 16fland in. its front wall with one or more openings 17 for the discharge of air fromsaid casing into the flue 9 in which it is located. The casin 16 at the front end of the flue 9 is provide with a central discharge opening 18 and around said opening with a concave depression 19 for the purpose of causing air discharged through the opening 18 to be spread in a circular volume.

As is more clearly shown in Fig; 3 of the drawing, the casing 16 is of considerably larger capacity than the casing 14 and is located within the tube 9 in such a way that its front end is about flush with the front end of the flue 9 and sothat an annular space is provided between the annular wall of the casing 16 and the inner surface of said flue. The rear wall of the casing 16 occupies a position at right angles to the flue 9 and thus provides an abutment against which air traveling forwardly or in the direction indicated by the arrows in Fig, 3, will impinge and to a certain extent be impeded in its passage through the space between the casing 16 and flue. The casing 14 is as shown located near the rear end .of the flue 9and will be supplied with at mospheric air through the intake pipe 11 and branch pipe 13, which as before stated,

is extended through an opening in the clo-.

sure 10 and as shown, supports the casing in such a way that its annular wall will be spaced from the inner surface of the flue 9 in which the device is located.

The operation of the device is simple and as follows:

The draft through all of the fines 9 of the boiler with the exception. of that one or those equipped with the device, for it will be understood that I may employ my improved device in one or more of the boiler flu-es will be, as usuahfrom the fire-box 6 rearwardly through the fines, but or flues equipped with the device has it or their rear ends closed, it is manifest that the draft through such equipped flue or flues,

will be reversed as the flames and heated gases escaping rearwardly from the firebox 6 through the dues surroundingthe fine or lines equipped with the device, will create a forward suction at the front end or ends of the equipped fines and that thus a forwardly pulling draft will be supplied to the front ends of the equipped flue or lines.

This action together with atmospheric pressure, will cause air to enter the outer end of the intake pipe 11 and pass into the primary expansion chamber 14 where it will become heated and expanded by reason of the heat of the water surrounding the fines, as well as by reason of the heat in the combustion chamber 7 and also by reason of the heat imparted from the surrounding flues When thus heated and expanded, air will pass as the flue 16 and from thence -w1ll pass out through the annular space between the casin 16 and flue 9 with considerable force and in a cir cular volume.

During this operation, part of the-volume of air from the chamber 14 will pass through the tube 15 into the casing 16, where it will be further heated and expanded and from whence it will pass through the opening 18 into the fire-box. As the opening 18 is surrounded by a concave de ression 19, this central volume of air wil be caused to spread out in circular form and intersect the annular or circular volume of air discharged between the casing 16 and front end of the flue.

fire-box and cause commingling of the heated air and combustible and volatile gases emanating from the burning fuel,

thus utilizing the air and oxygen to increase 1 from a given amount of fuel the of the combustible gases,

combustion While I have shown in the drawing,the

air intake pipe 11 as being vertically ex-.

tended through the top of the'furnacc and in communication at its lower end with one 'of the fines of the boiler, yet'it is manifest that the intake pipe may be extended through one of the side walls of the furnace or through the rear end wall thereof and conneote to one of the fiues, and that the same results will be afforded.

It will further be understood that while I prefer to utilize one or more of the fire fiues of a boiler in connection with my improved device, yet I do not wish to be limited thereto, as a fire flue of the furnace which may be suitably located, may be employed as a receptacle for the ex ansion casin s and the connecting pi e t erefor an closed in the same manner as when the device is used in connection with a boiler flue and as above described.

Having thus fully described my invention,

The intersection of these volumes of air will set up agitation in the ave its end opposite t e fire-box what I c aim as being new anddesire to secure by Letters Patent is--' 1. In a device of the class described,'the combination with a furnace having a firebox, of a conduit having one of its ends open and its other and closed, the o en end of said 7 conduit being adjacent the re-box, an air intake pipe communicating at one of its ends with the conduit near its closed end and having its other end disposed for the intake of air, an aperturod casing located in the "conduit near its closed end in communication with said pipe, another casing 10 open end of the conduit end be for discborging eir' forwardly tl rein, end 2 pipe connecting the said cnsings.

52, ln s device of the clues described, the combination with e, furnace having a firebox of e conduit beving one of its ends ofen its other end clo%d, the c en en of siiid conduit being adjacent the re-box, an sir intslre pipe cornmuniccting at one of its ends with the conduit near its closed end and having its other end disposed for the intelre oi err, on upertured casing located in the conduit nest its closed end in commuui cstion with said pipe, the said casingbeing spaced from the wells of the conduit, enotlicr cosin located in the open end of the conduit en having means for discharging nir forwardly therefrom said. last named cesing being spaced from the wells of the conduit sud having communication with the first nsmed casing.

In n device of the class described, the combination with c furnace having a. firebox of boiler rovided with o plurality of es and located with one of its ends adjecen't tire fire-loos, st leest one off said flues having its end/opposite the fire-box closed sir intsise pipe communicating st one oi its ends with said. flue near its closed end and having its other end extended through the iurnnos cusing for the intake of all, on spertnred cnsing located. in said t'iue neer its closed end in communication with said flips, stud cssing being spewed from the we of the line, snotlier casing located in the open or the due and braving means for disqing sir forwsrdly therefrom, said lest cl. casing being spaced from the wells of i. end boving communicstion with the st named causing.

chamber at its other end, of a. boiler provided with a olurality of flues and located lon itudinall between said fire-box and the com ustion c amber at least one of said flues having its end adjacent the combustion chamber closed, an air intake pipe communicating at one of its ends with said flue near its closed end and having its other end extended through the furnace casing for the intake of air, an apertured casing located in said flue near its closed end in communication with said pipe, said casing being spaced from the walls of the flue another casing located in the end of the due adjacent the firebox end linvin centrally in its front wall a forwardly cred o ning, said last named casing being spec from the walls of said flue and having communication with the first named casing.

5. A device of the class described, includinc in combination with a furnace having c Ere box at one of its ends and a combustion chamber at its other end, a. boiler provided with a plurality of longitudinally disposed flues, the said boiler being longitudimolly located in the furnace wlth its ends spaced from the inner end walls of the fur" zones, an air intake pipe extending into the end of one oi said fines adjacent the said combustion clisnober and having its other end extended through the furnace wall for the intake of air, and means closing the end of said flue adjacent the combustion chamher around said pipe but leavi the inner end 01E said pipe open for the discharge of sir into snid flue.

sensors J. RUSSELL.

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