US1544738A - Burner-operating mechanism for furnaces - Google Patents

Description

July 7, 1925.

B. H. GREENE BURNER OPERATIK'G MECHANISM FOR FURNACES 3 Sheets-Sheet l Filed May 14, 1923 July 7, 1925.

B. H. GREENE BURNER OPERATING MECHANISM FOR FURNACES Filed May 14, 1923 3 Sheets-Sheet 2 July 7, 1925.

B. H. GREENE BURNER OPERATING MECHANISM FOR FURIGACES 3 Sheets-Sheet 5 Filed May 14 1923 Patented July 7, 1925. 3

' 1,544,738 PATENT OFFICE.

BENJAMIN H. GREENE, OF CANTON, OHIO, ASSIGNOR TO UNITED ALLOY STEEL COR PORATION, OF CANTON, OHIO, A CORPORATION OF NEW YORK.

BURNER-OPERATING MECHANISM FOR FURNACES.

Application filed May 14, 1823. Serial No. 888,888.

To all whom, it may concern:

Be it known that I, BENJAMIN H. GREENE, a citizen of the United States, residin at Canton, in the county of Stark and state of Ohio, have invented certain new and useful Improvements in Burner-Operating Mechanism for Furnaces, of which the following is a specification.

The invention relates to open hearth furnaces of the regenerative type, wherein gas and air are received at one end and discharged from the other end of the furnace through companion tunnels having regenerators therein, the tunnels having common sources of gas and air supply; liquid or gaseous fuel burners being arranged for alternate insertion into opposite sides of the heating chamber of the furnace.

As described and illustrated in Patent No. 1,411,297 to Ralph D. Nye, issued April 4, 1922, the flow of gas into and out of furnaces of this type may be controlled by a reversing valve, which places the respective gas tunnels alternately in communication with the gas supply and the chimney title, and it is desirable to coordinate the operation of the air valves with the action of the gas valve, to admit the air'into both tunnels through a common inlet, and to provide free passage for the air intothe tunnels through the chimney flue so that the amount of air and gas will be properly proportioned.

The objects of the present improvement are to provide means for simultaneously inserting the fuel burner into one side of the chamber as the burner is withdrawn from the other side of the heating chamber; and to provide means for coordinatin the'operation of the fuel burners with t e operation of the valves.

A practical embodiment of the invention is illustrated in the accompanying draw- ,in s, forming part hereof, in which-- igure 1 isaplan'view ofa regenerative furnace showing the general arrangement of the valves and burners; 1 J

gig, 2, a section on the line 2- -2, Fig. 1; an

Fig. 3, an enlarged sectional view through one side of the heating chamber, showing one of the burners in elevation.

Similar numerals refer to similar parts throughout the drawings. l

An ordinary open hearth furnace 1- is built with air tunnels 2 and ga t nnels 3,

rocker shaft 9 is operatively connected tothe gas valve and provided with a rocking beam 10 to opposite ends of which are connected gate valves which control .theflow of air through the furnace, all of said parts being preferably of the same general construction as illustrated in the Nye Patent No. 1,411,297 above referred to.

A fuel burner 11 is provided for insertion into each side of the heating chamber 12 of the furnace. It is common practice to insert one of these burners into one side of the heating chamber and withdraw the burner from the other side thereof, the positions of the burners being alternated as the valves are operated to changev the flow of gas and air through the furnace.

It is necessary that the burner which is not in use at the time be immediately withdrawn when the other burner is put into operation, as the intense heat within the heating chamber would instantly melt the burner not in use if the same were left in the heating chamber after the flow of the air and gas through the furnaoe is changed by a mixin chamber 13 to which are connected the fiexlble tubes 14 and 15 for conveying oil and steam respectively to the burner. Each of the burners is suspended from a car 16 mounted upon an inclined rail 17, a weight 18 being suspended upon a cable 19 which is passed over a pulley 20 and connected to the forward end of the mixing chamber.

A rocker arm 21, located at right angles to the rocker arm 10 is fixed upon the rocker shaft 9. and the central portion of a cable 22 is attached to the lower end of said rocker arm, the opposite ends of the cable passing over pulleys 23 spaced at opposite 25 and 26, and upward over pulleys 27 at the outer ends of the inclined tracks 17 the extremities of the cable being connected to the outer or rear ends of the mixing chambers 13 of the burners 11.

It will thus be seen that not only the movement of the two burners is coordinated, causing one burner to be withdrawn from the furnace as the other burner is inserted therein, but the movement of the burners is coordinated with the movement of the gas and air valves.

Thus as the valves are operated to change the flow of gas and air through the tunnels and regenerative chambers and the heating chamber of the furnace, the burners are simultaneously operated, inserting the proper burner into one side of the heating chamber and withdrawing the other burner from the other side thereof.

It will thus be obvious that the opera tion of the burners is automatically controlled by the operation of the valves and the withdrawal of the burner not in use at the time, is simultaneous with the burner to be operated, obviating the possibility of melting the burner and dispensing with the necessity of providing water cylinders or the like around the burner to prevent melting.

I claim 1. In a regenerative furnace, a burner arranged to be inserted into each end of the heating chamber of the furnace and mechanism including cables connecting the burners for automatically withdrawing one burner as the other burner is inserted into the heating chamber.

2. In a regenerative furnace, a burner arranged to be inserted into each end of the heating chamber of the furnace and means including cables operatively connecting the burners together, whereby the insertion of one burner into the heating chamber causes the withdrawal of the other burner therefrom.

3. In at regenerative furnace, a burner arranged to be inserted into each end of the heating chamber of the furnace, a valve for controlling the flow of gas through the furnace, and means for automatically withdrawing one burner and inserting the other burner as the valve is operated.

4. In a regenerative furnace, a burner arranged to vbe inserted intoeach end of the heating chamber of the furnace, air

valves controlling the flow of air through the furnace, and means for automatically withdrawing one burner and inserting the other burner as the valves are operated.

5. In a regenerative furnace, a burner arranged to be inserted into and withdrawn from each end of the heating chamber of the furnace, a gas valve for controlling the flow of gas through the furnace, and means for coordinating the movement of the burners with the movement of the gas valve.

6. In a regenerative furnace, a burner arranged to be inserted into and withdrawn from each end of the heating chamber of the furnace, anair valve for controlling the flow of air through the furnace, and means for coordinating the movement of the burners with the movement of the air valve.

7. In a regenerative furnace, a burner ar ranged to be inserted into and withdrawn from each end of the heating chamber of the furnace, gas and air valves arranged to be simultaneously operated for controlling the flow of gas and air through the furnace, and means coordinating the movement of the burners with the movement of the valves.

8. In a regenerative furnace, burners arranged to be alternately inserted into and withdrawn from opposite ends of the heating chamber of the furnace, means for normally urging each burner into the heating chamber, a valve for controlling the flow of" gas through the furnace and means controlled by said valve for coordinating the movement of the burners whereby one burner is withdrawn ,as the other burner is inserted into the heating chamber.

BENJAMIN H. GREENE.

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