US1062473A - Smoke-consumer. - Google Patents

Description

W. KELLY.

SMOKE CONSUMER.

APPLICATION FILED AUG. 3, 1912.

Patented May 20, 1913.

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W.' KELLY. SMOKE CONSUMER.

APPLICATION FILED AUG. 3, 1912.

1,062,473. Patented May 20, 1913.

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WILLIAM KELLY, OF MEMPHIS, TENNESSEE.

SMOKE-CONSUMER.

Specification of Letters Patent.

' Patented May 20,1913.

Application filed August 3, 1912. Serial No. 713,077.

To alt whom it may concern Be it known that I, WILLIAM KELLY, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented new and useful Improvements in Smoke-Consumers, of which the following is a specification.

This invention relates to smoke consumers for steam boiler and other furnaces, the main object of the invention being to provide a smoke consuming attachment which may be readily, conveniently and inexpensively applied to any ordinary boiler furnace for injecting air and steam into the combustion chamber for the oxygenation of the unconsumed gases and products of combustion, to place the same in condition to be consumed, thus preventing the escape of smoke and unconsumed products through the stack and at the same time effecting a saving in the cost of fuel and the amount required to develop the desired heat.

A further object of the invention is to provide a smoke consuming attachment which may be connected with the furnace in a simple manner, and which provides for the injection of steam into the fire box or combustion chamber at a proper angle, and the siphoning of air which is injected with the steam to promote combustion, and which operates practically without noise or other objections.

A further object of the invention is to provide a smoke consuming attachment embodying meanswhereby the attachment is automatically thrown into action when the fire door is opened for replenishing the furnace with fuel, and which is automatically thrown out of action after a predetermined period has elapsed sufficient for the oxygenation of the gases and products of combustion and their thorough consumption.

A still further object of the invention is to provide a smoke consuming attachment which requires little or no attention, which may be thrown permanently out of action, and which insures economy in the use of steam.

The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being bad to the accompanying drawings, in which Figure 1 is a front elevation of a steam boiler furnace embodying my invention. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is a horizontal section on cost.

the line 3 3 in Fig. 2. Fig. 4 is a sectional elevation through the automatic controlling part of the apparatus.

Referring. to the drawings, 1 designates a furnace of any ordinary construction; 2, the ash pit; 3, thebridge wall; A, the fire box or combustion chamber; 5, the smoke stack; and 6, the fuel feed door in the front wall of the furnace, all of which parts may be constructed or arranged in the usual or preferred manner.

Extending across the front of the furnace is a manifold or air distributing pipe 7 provided atone side, at spaced intervals, with air inlet nozzles 8, and diametrically opposite said nozzles 8 with injection nozzles 9. The nozzles 9 fit within thimbles 10, which extend through the front wall and front plate or lining of the furnace and into the upper portion of the fire box or combustion chamber, said thimbles and nozzles inclining at an inward and downward angle so as to project the entering jets of steam and air'aga-inst the bridge wall at any point bet-ween the top of the grate and top of the bridge wall, so that such jets of air and steam will commingle with the rising gases and unconsumed products of combustion from the bed of fuel and thoroughly and effectually oxygenate the same for rapid combustion. By the provision of the thimbles 10, no special construction of front wall or lining plate is required, it being only necessary, for the application of the invention to any type of furnace, to set the thimbles in said wall and lining when the furnace is constructed or any time while the wall \and.

lining are being repaired or replaced, thus enabling the device to be applied with a minimum expenditure of time, labor and The use of thimbles is also advantageous in that they protect the nozzles 9 from the heat, so that the thimbles will be the only parts of the attachment requiring renewal at more or less frequent intervals.

Extending longitudinally within the conducting pipe 11 provided with jet nozzles 12 which extend partially through the nozzles 9. These nozzles 12 are also arranged in alinement with the air inlet nozzles 8 and are of less diameter than the nozzles 9, and by arranging them to terminate inside of the ends of the said nozzles 9 as described, the issuing jets of steam are caused to form a partial vacuum in the pipe 7, whereby a siphonic action will be estabmanifold or air distributing pipe is a steam lished to draw air in through the nozzles S and discharge jets or blasts of the same through the nozzles 9.

Extending parallel with the manifold 7 is an air supply pipe 7 closed at one end by a cap 7* and having its opposite or inlet end 7 extending straight or at any angle from the furnace out through the side wall of the furnace room or roof of the building to the exterior, or to any suitable point from which air is to be drawn. Preferably the inlet end of the pipe 7* has an enlarged or funnel-shaped extremity, and the body of said pipe is provided with sleeves 3 which slidably engage the nozzles 8. Air is thus supplied to the manifold or distributing pipe at points in line with the discharge nozzles 9, whereby asound-dampening action is instituted to prevent hissing or other objectionable noise. The air flowing through the pipe 7' iswarmed on its passage and commingled with the steam at a sufficiently high temperature to avoid the necessity of superheating the air, with a consequent loss of oxygen.

The pipe '11 communicates at one end with a steam supply pipe 13 leading from the boiler and within which is arranged a controlling valve 14. The stem 15 of this valve projects externally and is provided with a crank arm 16 connected with the vertical stretch 17 of a chain 18, the horizontal stretch 19 of which passes over guide pulleys 20 and 21 and is detachably connected at its free end to the fuel feed door 6. The end of the chain stretch 17 is connected with one end (the long arm) of a lever 22 pivotally connected intermediate of its length with a stem 23 carried by a diaphragm 24 arranged within a casing 25 from which rises a bracket 22 to which the lever is pivotally attached. The casing 25 is connected with an auxiliary supply or branch pipe 26 leading from the pipe 13, whereby steam may be supplied to said casing, so that the diaphragm will control the lever 22 and valve 14 for an automatic cut out action. A second chain 27 is connected at its upper end with the opposite end (or short arm) of the lever 22 and is looped to engage a superposed guide pulley 28 around which it passes, the chain thence depending and passing around a pulley 29 j ournaled alongside the pulley 21 and being fastened at its lower end to the chain stretch 19. The first mentioned end or long arm of the lever 22 tarder 31 and which is manually adjustable to cooperate with the retarder in regulating the flow of steam to the diaphragm casing, in order to enable the steam to be fed to the casing in such manner as to vary the time period elapsing between the setting of the consuming device into action and the point when the steam within the diaphragm casing reaches a proper degree of pressure to flex said diaphragm and thus communicate upward motion to the lever 22 to close the valve 14, thereby throwing the apparatus out of operation. Leading from the pipe 26 between the casing 25 and retarder 31 is a relief pipe 33 provided with a controlling valve 34 having its stem 35 provided with a crank 36 connected with the chain 27, which pipe permits of the escape of steam from the pipe 26 before reaching the diaphragm chamber, by means or which the diaphragm chamber may be relieved of a greater or less degree of steam pressure and the steam permitted to escape therefrom to the atmosphere or into the combustion chamber, as described.

The valves 14 and 34 are connected by the chains with the fuel feed door 6 in such manner that when the door is opened the valve 14 will be opened for the supply of steam to the pipes 11, 13 and 26, while the valve 34 will be closed to cut off the discharge of steam from the diaphragm casing and pipe 33 and, on the other hand, when the door is closed the valve 14 will. be closed to cut off the supply of steam to the pipes 11, 13 and 26 while the valve 34 will be opened for the discharge of the steam previously admitted to the diaphragm casing and to permit the diaphragm to return to its normal position. By this means when the fuel door is opened by the fireman for the purpose of replenishing the grate with fuel, the chains 18 and 27 will be respectively drawn upon and relax to depress and elevate the respective ends of the lever 22 to which they are attached, whereby valves 14 and 34 will be respectively opened and closed to admit steam to the pipes 11, 13 and 26 for the discharge of blasts of steam and air into the fire box and for simultaneously setting the controlling mechanism into action. When the fuel feed door is again closed, the chains will be slackened or untensioned, but the valves 14 and 34 will remain. respectively open and closed until the lever 22 is actuated by the diaphragm.

The regulating valve 32 having been previously set to allow a determined feed of ,the steam to the diaphragm casing, it will be understood that steam will continue to be supplied to the jet nozzles for the purpose of oxygenating the gases and products of combustion for consumption until the pressure in the casing 25 reaches a predetermined degree, at which time the diaphragm 24 will be deflected upward and will elevate the depressed long arm of the lever and depress the short arm thereof to points above and below the normal level of said arms, thus closing the valve 14L to cut off the supply of steam and opening the valve 3a to permit escape of the steam from the easing 25, whereupon the diaphragm will descend and the weight 30 will return the lever to normal position. By proper regulation of the valve 32, the time period or interval between the initial admission of jets of steam and air to the fire box and the operation of the diaphragm 24 to close the valve 14 may be varied, according to conditions and the character of fuel employed, so that the unconsumed gases and products rising from the bed of fuel after a fresh charge has been supplied may be entirely or practically entirely consumed before the apparatus is thrown out of operation. The automatic mechanism described avoids the necessity of manual attention to the parts of the apparatus, and at the same time effects a cutting off of the supply of steam at the proper time. to secure an economy of steam consumption.

I claim:

1. In a smoke consumer for furnaces, the combination with a furnace having a fuel feed door, of a manifold provided with air inlets and discharge nozzles, the latter communicating with the fire box of the furnace, a steam feed pipe arranged within the manifold and having jet nozzles communicating with said discharge nozzles, a steam supply pipe connected with the feed pipe and having a cont-rolling valve therein, a branch pipe leading from said supply pipe at a point between said manifold and valve, a diaphragm casing connected with the branch pipe, a diaphragm arranged therein and provided with an outwardly projecting stem, a pivotally mounted weighted lever supported by said stem, a regulator in the branch pipe for controlling the feed of steam to the diaphragm casing, a controlling valve in said branch pipe between the regulator and supply pipe, a relief pipe communicating with the branch pipe between the diaphragm casing and regulator and provided with a controlling valve, connections between the furnace fuel door and the lever and valves whereby when the door is opened the valves in the supply and relief pipes will be respectively opened and closed, and means operated by the lever through the action of the diaphragm for closing the valve in the steam supply pipe and opening the valve in the relief pipe.

2. In a smoke consumer for furnaces, the combination with a furnace having a fuel feed door, of a manifold provided with air inlets and discharge nozzles, the latter communicating with the fire box of the furnace, a steam feed pipe arranged within the manifold and having jet nozzles communicating with said discharge nozzles, a steam supply pipe connected with the feed pipe and having a controlling valve therein, a branch pipe leading from said supply pipe at a point between said manifold and valve, a diaphragm casing connected with the branch pipe, a diaphragm arranged therein, a regulating disk disposed in the branch pipe and having a constricted opening for controlling the feed of steam to the diaphragm casing, a controlling valve in said branch pipe between the regulating disk and supply pipe, a relief pipe communicating with the branch pipe between the diaphragm casing and regulating disk and provided with a controlling valve, connections between the furnace fuel door and the valves whereby when the door is opened the valves in the supply and relief pipes will be respectively opened and closed, and means operated by the diaphragm for closing the valve in the steam supply pipe and opening the valve in the relief pipe.

3. Ina smoke consumer for furnaces, the combination with a furnace having a fuel feed door, of a manifold provided with air inlets, and discharge nozzles, the latter communicating with the fire box of the furnace, a steam feed pipe arranged within the manifold and having jet nozzles communicating with said discharge nozzles, a steam supply pipe connected with the feed pipe and having a controlling valve therein, a branch pipe leading from said supply pipe ata point between said manifold and valve, a

diaphragm casing connected with the branch pipe, a diaphragm arranged therein, a regulator in the branch pipe for controlling the feed of steam to the diaphragm casing, a controlling valve in said branch pipe be tween the regulator and supply pipe, a relief pipe communicating with the branch pipe between the diaphragm casing and regulator and provided with a controlling valve, and connections between the furnace fuel door and the valves whereby when the door is opened the valves in the supply and relief pipes will be respectively opened and closed, and means operated by the diaphragm for closing the valve in the steam supply pipe and opening the valve in the relief pipe.

In testimony whereof Iaffix my signature in presence of two witnesses.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). G.

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