US1903308A - Combustion device - Google Patents

Description

April 4, 1933- w. R. l-lULEn-:RTv

COMBUSTION DEVICE Filed Oct. 19, 1931 iz eyz T92 agg.

Patented Apr. 4, 1933 1,903,308

iJNrrEDv STATI-:s PATENroFFI'cE n.; iIULBEnr, oF onrcaeo, ILLINoIs COMBUSTION DEVICE Application led October 19,1931. Serial No. 569,601. u .M i j This invention relates to combustion de- These outer and inner bodies are integral vices according to which heated air and through the tubular connecting portions 12 steam are distributed over the bed of feul and 13. The structure may be of heat-resistln boilers and the like in order to oxidize ing iron or some other heat-resisting compocombustible gases in they fire box and thus sition moulded or castadesired shapefThese 55 nerate more heat. In this specification tubular connections 'provide passageways 6 shall callsuch boilers, etc., furnaces and 7 respectively into the hollow interior Various suggestions have been made for 14 defined by the inner body 11. supplying both heated air and steam to aid There is an integral base 15 secured by i lo combustion, and the patent granted to bolts 16 to a mainsupport 17 held by bolts do McPhee and Krueger, No. 1,827,033 of Oc- 18 upon the `furnace doorf19. They door is tober 13, 1931, on heat intensifier for boilers open to the outer air at 20 and the support shows an air-heating device similar to the one 17 has an opening 21 leading to the space shown herein,'with means also for supply- 22 between the outer and inner bodies 10 n' in steam.A i u and 11, and there is a narrow and elongated he chief object is .to provide improved nozzle at 23 in communication with the space means for accomplishing better combustion 22. inV such furnaces'. `Specific objects are to According to the construction thus far deprovide simple and advantageous means for scribed, outer air enters and is heated in the conducting live steam to the heat intensifier; space 22 both by reason of the flames or furto provide an intensifier unit whereby the nace heat playing upon the outer body 10 and live steam is advantageously super-heated by reason of suchfheat-passing through the and directed over the fuel bed; and to propassageways 7 and 6.v Suchheated air is vide that a greater uantity of preheated air discharged at 23 over the fuel bed.

be so distributed.` her objects and advan One of the novel features of thepresent 75 tages will appear hereinafter. device is in the provision of a tubular mem'- In the drawinr Figure 1 is a side elevation ber 25, which is shown integral with the inof a fragment o? a furnace having a door in ner body 11 but without limitation in that closed position and showing pipe means leadrespect, extending from one side of the body o ing thereto. l 11 diametrically across the other side and Fig; 2 is an enlarged vertical mediall secbeing directed toward the dischargeopening tion through the intensferunit and the door; 23. It is shown as being straight across but Figshori'zontal medlal Sectlonlthmugh it may have other shapes or directions.` It u the l'Ilf/BIISIGP and C1001', s 0n the 11116 3 3 has a longitudinal passageway 26, and at 0f Elg- QL l what I shall call its outer end there isa dis- Flg- 4 1S @f Vert/leal Sectio? throllgh the charge nozzle in the form of a plug 27 a Vahle mecilamsmand an associated: pipe; and threaded into an opening coaxial with the Flg 5 1S a fragmentary top new of the passageway 26 and having a small discharge'.

" do. Showing d contlcton of a'vahe'oper' opening 27 directed toward the vmain dis-` o ating member t erewi i. Charge Opening 23. Y

Various advantages of the particular' type 7 a Y of bulbous intensifier unit herein illustrated At hat I Shall term the Inner. en@ (if the are set forth in said McPhee and Krueger pattubularmember 25 the Wan ,11 1S Sllmlarly ent and herein I shall merely describe the bored and tPPed at t0 ,recava the Plpe SGC' Stmlcture Shown tion 31, which by means of several elbows 32 95 The outer and inner bodies 1() and 11 are M'd 33 is Placed in COllmlmaUIl Wlth af shown as being substantiallyspherical, which plpe 3 4, Which has connected to 1t. ank elbow is the preferred form. The inventionv in va- 3 5 (F1g.1) to Whichlis connecteda exible rious respects is not limited, however, to the pipe sect1on36 extending at its other end intoA so particular shape or type of the intensifier. the boss 39-ofthe valve body 40. This lpipe 100 i' tion discharge device of any well known or 36 is able to hold steam under appropriate pressure.

The valve mechanism shown in Fig. 4 comprises the outer body or casing 40 having a downwardly-extending coaxial integral pin-like support 41. Turning to Fig. l we note that the door 42 has hinge lugs 43 coacting with lugs 44 secured to the furnace wall 45 and that there is a hinge pin 46 having a head 46a completing the hinge connection between the furnace wall and the door. This head 46a of the hinge pin is vertically recessed as shown by dotted lines at 47 and into this recess extends the pin or projection 4l of the valve mechanism body.

The valve member 48 is conieally tapered and interfits nicely with the inner wall 49 of the body 40. The flange 48a prevents binding of the valve in the body. There is an in- -tegral tubular stem 50 issuing from member 48 having a passageway 5l which is continued downward partly through the member 48, and there is a transverse boring at 52 in member 48 reaching to the passageway 51 and providing a port at 53. The boss 39 is bore-d at 54 to meet the port 53 so that when valve member 48 is in the position shown in Fig. 4 steam may pass through channels 5l, 52 and 54 into the hollow interior of pipe 36 and thence to the intensifier.

. Turning again to Fig. l the tubular valve stem 50 is connected rigidly to a T-coupling 55 into which is threaded a pipe 56. Next follows an automatically-operating condensaapproved form; and there is a hand-valve 58 for controlling the passage of steam to the intensifier. The furnace may have several fuel doors and there may be a common pipe line (marked 60 at each broken end thereof shown in Fig. 1) for the several units-one for each door.

The stem 50 and the valve member 48 are sealed by packing 61 and the gland 62.

Since the valve stem 50 is held in a relatively fiXed position the valve is operated by turning its body 40. Owing to the general looseness in the door hinge connections 43-44 and the tendency of such doors to sag -and have up-and-down movements when opened and closed, it is preferable that means for turning the valve body from the door have some looseness or play at the connection. To this end I provide an arm 65 rigid with body 40 at 66 and extending to a place at the door spaced inward from its hinge connection. This arm 65 may extend to the top edge of the door without resting thereon, as shown in Fig. l, and therefore the upward and downward movements of the door will not move or put this arm 65 under strain. The` arm has a slot 67 (Fig. 5) and a machine bolt 68, threaded into the door through the slot 67 is a driving stud for moving the arm when the door is swung open and shut. When the door is closed the valve is opened as in Fig. 4, and live steam is discharged at the small nozzle opening 27. Vhen the door is opened th-e valve is closed, and this enables the fireman to stoke the furnace without the discharge of steam at the furnace door. Since the valve mechanism is mounted on the hinge pin and coaXially therewith the alinement of valve body is maintained. The mechanical construction is peculiarly simple and efficacious. This mechanism as a whole may readily be installed as an attachment device to furnaces already in use.

When steam issues from the small orifice Q7 its stream entrains air and causes a. greater inflow of out-er air intoi the intensifier unit, thus causing more outer air to reach the fire box above the fuel bed. of the steam jet such air and steam are carried far inward and to the remote portions of the tire boX, and there is in general a better diffusion of air and steam over the fuel area.

The advantages of air and steam for aiding combustion are well understood. One of my prime objects is to gain a better distribution of the desired amount of both air and steam in a device of this kind than according to what has been done, so far as I know, hitherto. With this simple device one is able to approximate closely the advantages obtained through much larger and more complicated systems or method for accomplishing the general result.

I contempla-te as being included in these improvements all such changes, variations and departures from what is thus specifically illustrated and described as fall within the scope of the appended claims.

I claim l. A combustion device of the character described comprising walls forming a hollow hulbons outer body having an intake port and a discharge port substantially at opposite ends of the body respectively and having means for securing the body to a furnace at an air intake opening thereof with such intake opening in communication with said intake port and with said body extending into the fire box of such furnace, there being walls forming an inner hollow bulbous body within and spaced from the walls of the outer body to provide a substantially shallow passageway substantially surrounding the inner body and extending between and opening into said ports respectively, there being at least two tubular devices connecting the interior of said inner body with the exterior of said outer body at widely spaced-apart intervals circumferentially of the outer body for the purpose specified, together with a pipelike member extending across the interior of said hollow bulbous body and opening at one of its ends adjacent to said discharge port,

Owing to the forceV with means for conducting live steam to the othey` end of said pipe-like member. e

2. The device of Claim l hereof in which said bodies, said tubula-I` devices, and said pipe-like member-are all integral with each other.

WILLIAM R. HLBERT.

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