US1397977A

US1397977A - Gas-burner

Info

Publication number: US1397977A
Application number: US424787A
Authority: US
Inventors: Ira G Marquette
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-11-17
Filing date: 1920-11-17
Publication date: 1921-11-22
Anticipated expiration: 1938-11-22

Description

I. G. MARQUETTE.

y GAS BURNER. APPLICATION FILED NOV. Il, 1920.

Patented Nov. 22, 1921.

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GAS-BURNER.

Specification of Letters Patent.

Patented Nov. 22, 1921.

Application led November 17, 1926. Serial No. 424,787.

To all whom it may concern:

Be it known that I, IRA G. MARQUETTE, a citizen of the United States, residing at lVheeling, in the county of Ohio and State of lVest Virginia, have invented certain new and useful Improvements in Gas-Burners, of which the following is a specification.

This invention relates to gas burners and burner installations, and it comprises a furnace having a fire-box, a grate arranged in said fire-box, a plate or shield arranged over said grate to prevent passage of air into the fire-box, feed pipes disposed on said grate, burners arranged in said feed pipes and projecting through said shield, said burners being provided with air inlet openings arranged below said shield, flanges arranged on said burners above said openings to direct air to said openings, said burners being provided with inclined outlet openings at their upper ends, a flange arranged at the upper end of each of said burners, and a deflector plate arranged substantially paralle-l to said outlet openings.

In the present invention, I have provided a burner installation for furnaces and the like, wherein the ordinary furnace construction may be employed and the feed pipes for the fuel placed on the grate. A plurality of burner tubes project upwardly from the feed pipes and are provided with air inlet openings, whereby sufficient air to support combustion may be delivered from the ash pit through the grate and mixed with the fuel passing into the burner tubes. Above the air inlet openings, a plate or shield. preferably made of asbestos or similar material is placed across the furnace to prevent introduction of air passing through the grate into the upper part of the furnace where the fuel is burned. Each of the burners is further provided with means for intimately mixing the air and fuel upon its discharge from the burner to cause thorough and complete combustion.

The invention further comprises a burner consisting of a substantially cylindrical tube having air inlet openings arranged near its lower end, an annular flange disposed above the air inlet openings, and an outlet opening arranged at the top with a deflector plate slightly spaced from the opening and adapted to cause intimate mixture of air and fuel delivered from the burner and projected against the plate.

In the accompanying drawings, I have shown one embodiment of the invention. In this showing: Y

Figure 1 is a front elevation of a portion of a furnace showing the invention applied,

Fig. 2 is a horizontal sectional View on line 2 2 of Fig. 1,

Fig. 3 is a vertical sectional view of one of the burners, the deflector being shown in elevation, and,

Fig. 4 is an end elevation of a burner.

Referring to the drawings, the reference numeral l designates the walls of a furnace which may be made of any suitable refractory material capable of withstanding the heat generated within the fire-box 2. The front of the furnace is provided with lirebox doors 3, and ash pit doors 4 in the usual manner. A grate 5 is arranged within the furnace between the ash pit and the firebox. The construction heretofore described is the usual furnace construction, and it will be noted that the invention may be applied to any furnace without materially modifying the present construction.

Gas or other fuel is delivered to the furnace through the main feed pipe 6 which may be provided with a valve or other control 7. A regulating valve 8 may be arranged in the main feed pipe to cause uniform flow of fuel to the burners. A lurality of branch pipes 9 are connecte to the main feed pipe and extend through the fire box doors 3. These pipes are provided with valves 10, whereby the flow of fuel to any of the branches may be controlled and one branch used independently of another. As shown, the branch pipes are arranged in pairs and communicate with substantially rectangular pipes 11, arranged within the furnace and disposed on the grate 5. A plurality of vertical outlets 12 are connected to the pipes 11 and burner tubes 13fare suitably connected to these pipes. The burner tubes are provided with restricted inlet openings 14 communicating with the pipes 12 at their lower ends and with a mixing chamber 15 at their upper ends. As shown, the mixing chamber is of materially greater diameter than the openings 14 and the flow of gas into the mixing chamber is ada ted to cause introduction of air from the as pit into the burner tubes through openings 16. An annular flange 16 is arranged above the openings, and adapted to deflect the air and direct it into the mixing chamberof the burner tube. As shown, a shield or plate of asbestos or other suitable material, is arranged 1n the fire-box, spaced from the grate, and disposed above the air inlet openings 1G. This shield prevents the air from the ash pit from flowing into the upper portion of the tire-box where burning of the fuel takes place.

The upper end of the burner tube is provided with an inclined outlet opening 19 and a defiector plate 30 is spaced from the burner and arranged substantially parallel t-o this opening. The deflector plate may be supported on the burner in any suitable manner. as by arm 21. The upper end of the burner is provided with a flange 22, arranged substantially at right angles to the walls of the burner tube and adapted to direct the fiow of air'and fuel against the deflector.

In operation, the fuel is delivered to the pipe sections 11 from the main feed pipe 6 through branches 9. The fiow of fuel to the individual sections may be controlled through valves 10 and any of the sections may be used independently7 of each other. The fuel passing through the vertical pipes 12 is delivered to the restricted passage-way 11 to the burner tubes, and upon enteriing the mixing chamber 15, draws air inwardly through openings 1G. The air is supplied to the ash pit by any suitable type of draft, such as is usually employed in furnaces burning solid fuel.

By means of the shield 18, passage of air into the upper portion of the tire-box where the fuel is burned. is prevented, and in this manner Hare-backs in the burner tubes are prevented.

The use of the shield 18 is further advan tageous in that it prevents the passage of air through the furnace to the stack or chimney without first passing into the mixing chamber of the burner. The burners, therefore. receive and consume the proper amount of air. the air being thoroughly mixed with the fuel before ignition to afford complete combustion.

The mixture of air and fuel passes through the mixing chamber to the burner outlet opening 19. whence it is delivered against the deflector 20. A portion of the mixture strikes the flange 22 and is thrown back into the main flow of air and fuel causing a whirling action and insuring complete admixture before ignition. The complete admixture of the fuel is further insured by the provision of the deflector plates 20. the en tire mixture being delivered against the deflector plate at the time it is burned, and

the flame being directed upwardly against the walls 1 of the furnace.,

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention, or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In av furnace, a fire-box, a grate arranged therein, a shield arranged above said grate, feed pipes disposed on said grate, burners connected to said feed pipes and projecting through said shield, and means for introducing air to said burners below said shield.

2. In a furnace, a fire-box, a grate arranged therein, a shield arranged above said grate whereby passage of air from the lower portion of the fire-box to the upper portion is prevented, feed pipes disposed on said grate, and burners connected to said feed pipes and projecting through said shield into the upper portion of the fire-box, said burners being provided with air inlet openings arranged below said shield.

3. A gas burner comprising a substantially tubular member forming av mixing chamber, said member being provided with a restricted opening for the inlet of fuel, and being further provided with a plurality of air inlet openings, a flange arranged on said tubular member above said air inlet openings. the upper end of said tubular member being provided with an inclinedv outlet opening. and a deflector spaced from said opening and arranged substantially parallel thereto.

4. A gas burner comprising a tubular member having` a restricted opening arranged at the bottom for the introduction of fuel, said member being further provided with a plurality of air inlet openings arranged adjacent said restricted opening` the upper end of said member being provided with an inclined outlet opening, a flange formed on the upper end of said member and partially covering said outlet opening, and a dctleetor spaced from said opening and arranged substantially parallel thereto.

In testimony whereof I affix my signature iu presence of two witnesses. l

IRA G. MARQIIETTE. lVitnesses Aamnosn S. MILLER, J. lV. KINDELBERGER.