US1160806A - Furnace. - Google Patents

Description

Y0.1. WUESINIR @L A.G.SCHUMANN.

FURNACE.

APPLICATION FILED IULYH, I9l4. RENEWED SEPT. 15. I9I5.

Patented Nov. 16, 1915.

3 SHEETS-SHEET I.

Y gnou/Hou? (2.1. WUESTNER & A. G. SCHUIVIANN..

l FURNACE. l APPLICATION FILED JULYH. 1914. RENEWED SEPT. 15. 1915.

' Patented Nov. 16, 1915.

3 SHEETS-SHEET z.

0.1. WUESTNER L A. G. SCHUMANN.

A f uRNAcE. APPLICATION FILED ,IULYB` 1914- REEWED SEPT. l5 1.915. l

Patented Nov. 16, 1915.

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CLARENCE J'. WUESTNER AND ALFRED G. SICHU1VIANN, OF HIGHLANDTOWN, VIARY- LAND; SAID WUESTNER ASSIGNOR T0 SAID SCHUIVIANN.

FURNACE.

Application filed .Tuly 8, 1914, ySerial No. 849,760.

T 0 aZZ whom t may concern.'

Be it known that we, CLARENCE J. WUEsT- NER and ALFRED G. SCHUMANN, citizens of the United States, residing at Highlandtown, in the county of Baltimore and State of Maryland, have invented certain new and useful Improvements in Furnaces; and We do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention contemplates new and useful improvements in oil burners and resides in the provision of a novel oil burner that is particularly `designed for use in connection with open hearth furnaces and which will operate to provide a maximum heat with a minimum fuel consumption and is constructed so as not to become injured by the heat from the furnace or device to which it is attached.

Another object is to provide novel means for moving the burner into and out of the furnace and which operates when two burners are employed on opposite sides of the furnace to alternately move the burners into the furnace and inject fuel when so extended so that whenV one burner is discharging the other is withdrawn from the furnace and is protected against becoming injured by the intense heat from the furnace.

Another object is to provide means for cooling the burner when in withdrawn position so that its proper operation is insured.

Another object is to provide a novel valve arrangement which permits the fuel to be fed to the furnace when the burner is in extended position only.

This invention further aims to improve oil burners so as to render them more practical, reliable and eflicient in operation, inexpensive to manufacture and more commercially desirable. v

The above and additional objects are accomplished by such means as are illustrated in the accompanying drawings, described in the following specification and then more particularly pointed out as claimed.

With reference to the drawings, wherein we have illustrated the preferred embodiment of our invention as it is reduced to practice, and throughout' the several views of which similar reference numerals designate corresponding parts, Figure 1 is a dia- Speeication of Letters Patent.

Patented Nov. 16, 1915.

Renewed September 15, 1915. Serial No. 50,904.

grammatic View showing our improved burner and cooperating parts attached to an open hearth rfurnace of the ordinary type, said furnace being shown iii-section, 'Fior 2 1s an enlarged plan view of the means or moving the burners into and out of the furnace and oil and air valves, Fig. 3 is a detail longitudinal sectional view taken through the operating cylinder for reciprocating the burner, Fig. 4 is a longitudinal sectional view taken through one of the valves for controlling the oil and air discharge, Fig. 5 is a longitudinal sectional view of the valve to control the operating means for the burner, Fig. 6 is a longitudinal sectional view taken through the cooling means for the burner, Fig. 7 is a detail sectional view taken longitudinally through a modified form of burner showing adjusting means therefor, Fig. 8 is a detail sectional view taken through the burner at the discharge end thereof at a the burner at the discharge end therefor at a plane at right angles to that shown in Fig. 7, andFig. 9 is a fragmentary longitudinal sectional view through the burner tip.

Referring to the drawings by characters of reference, A designates as an entirely an open hearth furnace of the ordinary and well known type and to which our improved burner is attached. In the application'of our improved burner to the furnace A, a burner is provided in each side of the furnace and is provided with mechanism whereby it is moved into and out of the furnace and discharges fuel when in extended position.

Our burner consists of an outer cylindrical shell 1 that has its discharge end 2 provided y with an angularly disposed flange 3 so that an elongated discharge opening is provided thus producing a fan like flame. Mounted within the outer shell 1 is a tubular oil p1pe 4 provided with a flared discharge end 5 and being of considerably less diameter than that of the outer shell 1. One kend of the outer. shell 1 is turned in an internally threaded nipple 6 that is formed on one side of an approximately rectangular and hollow coupling member 7. A compressed'air pipe 8 is secured to the coupling member 7 and com- 'municates therewith in such manner that the air may readily flow tl. rough the shell 1 and out at the discharge end 2 thereof. In the side of the coupling member 7 opposite to the point where the pipe 8 is connected is formed a longitudinal slot 9 through which is slidably extended an oil pipe 10. A two way coupling member 11 connects the pipes 4 and 10 with each other, within the coupling member 7 The coupling member 11 is enlarged at the rear end thereof and formed with a slot or recess 12 therein, in which slot or recess 12 is swiveled the head 13 of an adjusting screw 14. The adjusting screw 14 is turned through an opening 15 formed inthe rear Wall'of the coupling member 7 and extended beyond said wall and squared on its outer end as at 16. A lock nut 17 is turned upon the extended threaded portion of the adjusting screw 14. It is to be understood that this adjusting-arrangement is 'provided only when the burner is to be held stationary and not equipped with the reciprocating mechanism to be later more fully described. When the burner is to be reciprocated it is constructed as shown in Fig. 2, a piston, as will be later more fully described and which isdesignated 18, is secured in an opening in the rear wall of the coupling member 7 as at 19.

To prevent leaking ofthe air from the member 7 through the slot 9 therein we provide a closure plate 20 that is secured in any suitable manner upon the pipe 10 and slides upon the outer face of the coupling member 7 so as to at all times close the slot 9 therein. By adjustment of the pipe 4 to move the discharge end 5 thereof relative to the discharge end 2 of the member. .1, the character of iame may be regulated or changed as desired. The flange 3 in partially covering the discharge opening in the vshell 1 deflects the air rushing through said shell in such manner that itis thoroughly mixed with the oil which discharges fromA vthe pipe 4 at the end 5 thereof, thus a proper mixture'of oil and air is discharged into the furnace or apparatus to which the burner or burners are attached.

Ne provide cooling means to be mounted within the furnace and which prevents heat therefrom from'injuring the burner. The

cooling means is mounted l in the ports B and C inthe sides of the furnace and which communicate with the lire box D. In these ports B and C the burners are arranged as clearly shown 1n Fig. 1 in the drawings;

The cooling means consists of an outer cylindrical shell 21`and an inner shell 22 similar to the one 21 but of4 considerably less diameter. A cylindrical sleeve or coupling member 23 provided with an inwardly turned Aouter end to provide an annular flange 24 which is spaced fromthe member 23 receives at one end the outer end of the shell 21 and the shell 22 at the flange 24 thereof. The flange 24 serves in combination with the shell 22 to` seal Y. the compartment formed by the member 21 at the outer end thereof. A cyljndrif. .e

cal member 25 receives the other end 0f the member 21 and is provided with a central web plate 26 through which is inserted the inner shell 22. A flanged packing sleeve 27 is mounted upon the shell 22 and is inserted into the member 25 at the rear end thereof. The shell 22 is of suflicient size to slidably receive the shell 1 of the burner so vthat said shell 1 may extend beyond the shell 22. The shell 21 is secured in any suitable manner Within each of the ports B and C so that the inner end thereof is spaced from the fire box D. A water inlet pipe 28 communicates with the shell 21 at one end of said shell and is connected with the member 25. An outlet pipe 29 is connectedv with the coupling member 23 and communicates with the shell 21. It will be readily seen that Water may be caused to circulate in the chamber formed by the shell 21 about the pipe 22 which surrounds the shell 1 of the burner. The circulation of cold water will serve to cool the burner in such manner that the intense heat from the furnace will have no effect thereupon. The cooling means hereinbefore described acts to slidably support and guide the burner as well as to cool the same.

lhe means for reciprocating the burner so that it is moved into and out of the furnace consists of three cylinders 30, 31 and 32 that are secured to one another in any suitable manner. The cylinder 30 is arranged between the cylinders 31 and 32 and has mounted therein a piston 33 that is connected to the piston rod 18 previously described. A suitable packing member 34 slidably receives the piston rod 1 8 at one end of the cylinder 30. Air pipes 35 and 36 are secured to the cylinder 30 and communicate therewith .at points adjacent to its ends. The pipes 35 and 36 connect with a valve casing 37 in which `an ordinary D slide valve 38 is mounted. A valve casing 39 similar to the one 37 and provided with -a valve similar to the one 38 is mounted adjacent to the one 37 and adapted to control mechanism for reciprocating the burner in the other side of the furnace. It will be understood that in a furnace of the character shown in Fig. 1 we provide burners on opposite sides thereof and identical mechanism for operating the burners. The valve stem 40 is common to the valves in the casings 37 and 39 so that the valves work alternately resulting in the alternate reciprocation of the burners in the ports B and C. In each valve casing 37 We provide a central inlet port 41 that iS arranged to communicate with outlet ports 42 and 43 which communicate respectively with the pipes 35 and 436. An air pipe 44 is connectedwith a suitable source of compressed lair supply and with the port 41.

The portsv 41, 42 and 43 are formed in the movement of the piston and the withdrawal of the burner from the furnace from a position illustrated on the left hand side .of Fig.

1 to that on the right hand side. lVhen the valve 40 moves to the other side of the casing 37 and communicates the ports 41 and 43 with each other the air is admitted to the outer end of the cylinder 30 and the piston moved so that the burner is inserted into the furnace and a charge of fuel injected as will be later more fully described. The valves 38 are operated through the medium of a pivoted lever 45 that is pivoted intermediate its ends as at 4G to a suitable support not shown and is loosely connected as at 47 to the valve rod or stem 40 centrally of the lends of said valve rod or stem. The upper end of the lever 45 is pivoted as lat 48 to a reciprocatorv beam or rod 49 that is connected with a suitable source of power and operated to move back and forth or reciprocate. It will be readily seen that the valve 38 will operate to alternately admit air to either side of the piston 33 in the piston cylinder 30.

A pipe 50 serves to connect the cylinder 31 with a, suitable" supply of air, not shown. Mounted within the cylinder 31 is the 'other end of the air pipe 8 that is connected with the shell 1 of the burner. The cylinder 31 is closed at both ends and said pipe 8 is slidable through a' suitable packing collar 51. A valve member 52 provided with a beveled outer. face is mounted upon the inner end of pipe 8 and arranged to seat within a frusto-conical seat 53.

The valve 52 is provided with an opening 54 therein which communicates with the pipe 8 and is to be closed when the valve' is seated with the seat 53. The seat 53 is mounted upon a pin 54a that is threaded at its outer end and inserted through the outer end of the casing 31. A nut 55 is turned on the outer end of said pin. A helical expansion spring 56 is mounted upon said pin 54al and engages the adjacent wall of the cylinder 31 and the seat 53 at its terminals. This spring 56 serves to yieldingly hold the seat 53 in extended position and will' yield when the valve 52 is moved toward theseat so as to provide a positive seating ofthe valve and to prevent flow of air thereinto and through the pipe 8. When the valve 52 is spaced from the seat 53 as shown in Fig. 4 in the drawings, the air passes intol the cylinder 31 through the pipe 50, through the opening 54 in the valve 52 and out through the pipe 8 into the shell 1 of the burner as previously described. The pipe 8 is connected with the coupling member 7 which is in turn connected with the piston 18, thus it will be seen that the valve 52 is open only when the burner is extended into the furnace into position for discharging fuel into the lire boX D.

A supply -pipe 57 communicates with the cylinder 32. The supply pipe 57 is connected with a suitable source of supply and is arranged to communicate with the pipe 10 which is extended into the cylinder 32 in the same manner as is the pipe 8 and is provided with an identical valve arrangement which operates only when the piston rod 18 is extended. It will thus be seen that the valves in the cylinders 31 and 32 operate simultaneously when the burners are extended into the furnace to permit the flow of air and oil to the burners.

The furnace A is equipped with flue passages E and F which communicate with the passages C and B which lead to the fire box D. Vhen theburner in the port C is inextended position as shown in Fig. 1v in the drawings, the burner in the portl is drawn so that it is housed within the cooling means consisting of the shells 22 and 23 and the draft or products of combustion pass into the port B down the port or-passage E and out through the stack. A similar operation is had when the burner in the port B is extended and the one in the port C withdrawn. Steam as well as air may be used for blowing the oil through the nozzle.

In practice, we have found that the form of our invention, illustrated in the drawings and referred to in the above description, as -the preferred embodiment, is the most eicient and practical; yet realizing that the conditions concurrent with the adoption of our device will necessarily vary, wevdesire '2. In a device of the character described,

the combination with a furnace of fuel injecting means mounted on opposite sides of the furnacel and arranged" to inject fuel therein, means to alternately move said fuel injecting means into and out of the furnace, and means to automatically admit oil and air to the injecting means at the time it is extended into the furnace and automatically Aso4 cut ol' the supply of oil and air to theF injecting means when itis withdrawn from .the furnace.

3. The combination with a furnace of 5 burners mounted for reciprocation into and out of the furnace on opposite sides thereof,

said last named cylinders, said valves carried on the inner ends of said pipes, valve seats within said last named cylinders to coperate with said valves when the burners are .withdrawn from the furnace and means to alternately provide a supply of air on oppositexsides of the piston in saldv 25 -first cylinder.

4; The combination with a furnace of a burners mounted for reciprocation into and ,out of the furnacev on opposite sides thereof,

cylinders, pistons mounted withinY the cylinders, piston rods connected with the pis- .tons and the respective burners at their ends and slidable through the cylinders, cylinders mo-unted on opposite .sides of said first cylv inders,.oil and air feed pipes communicating respectively with said last named cylinders, valves mounted within said last'named cylvalves'carried on the inner ends of said pipes, valve seats within said last named cylinders to coperate with said valves when the burners are withdrawn from the furnace, means to alternately' provide a supply of air on opposite sides of the piston in said first cylinder, and said means consisting of two way valves connected with said first named cylinder and a suitable source of compressed air supply.

5. The combination with a furnacel of burners mounted for reciprocation into and out of the furnace, automatic means to move the burners alternatively into and out of the furnace and automatic means to admit fuel to the burners when the burners are recipro-A cated and cut off the supply of fuel when Hthe burners are withdrawn comprising cylinders, valves movable within the cylinders and operatively associated with the burner reciprocating means to move simultaneously therewith and yielding valve seats within the cylinders to coperate with the valves when the burners are withdrawn.

In testimony whereof we aliX our signatures in presence of two witnesses.

CLARENCE J. WUESTNER. ALFRED G. SCHUMANN. Witnesses: i

JOHN P. FORD,

GEORGE KROEN.

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