US1154421A - Burner-tip. - Google Patents

Burner-tip. Download PDF

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Publication number
US1154421A
US1154421A US2102715A US2102715A US1154421A US 1154421 A US1154421 A US 1154421A US 2102715 A US2102715 A US 2102715A US 2102715 A US2102715 A US 2102715A US 1154421 A US1154421 A US 1154421A
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United States
Prior art keywords
tip
burner
constriction
bore
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US2102715A
Inventor
Howard Lyon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WELSBACH LIGHT CO
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WELSBACH LIGHT CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WELSBACH LIGHT CO filed Critical WELSBACH LIGHT CO
Priority to US2102715A priority Critical patent/US1154421A/en
Application granted granted Critical
Publication of US1154421A publication Critical patent/US1154421A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl

Definitions

  • FIG. 1 is a side elevation of a burner tip embodying my invention
  • Fig. 2 is a vertical section of the same
  • Figs. 8 and 4 are, respectively, bottom and top plan views of the tip.
  • My invention has relation to burner tips, and is designed to provide a tip in which the gas and air passage or bore of the tip is so constructed as to prevent back-firing and to produce a broad flame capable of properly filling and incandescing an incandescent mantle.
  • l/Vhen a mixture of air and gas is distributed through a nozzle having an outlet of a certain cross sectional area, it has a certain discharge velocity depending upon the cross sectional area. If the area of the outlet is reduced and the rate of flow is maintained, the velocity of fiow will be increased approximately in proportion to the diminution in the area of the outlet.
  • the numeral 2 designates the body of the tip hav- Specification of Letters Patent.
  • the upper threaded portion 3 adapted to be screwed into the burner tip or fixture.
  • the lower tubular portion of the tip is shown as having the lugs 4 for engagement with the usual supporting legs of a mantle ring.
  • the tip has the upper chamber 5, which at its lower portion tapers downwardly and inwardly to the bore 6 of the tubular portion of the tip.
  • This bore is constricted at 7, where it joins the cone portion of the chamber 5; and below the point 7, its cross sectional area gradually increases.
  • the back firing in a tip of this character is in all ordinary conditions of gas quality and pressure confined entirely below the constriction '7, and in case burning should persist in the region below such constriction, a gauze, located above the constricted portion, will be unharmed.
  • the tip can be readily molded in one piece from refractory material, and is free from joints or other parts which would be in juriously affected by the heat.
  • a burner tip having an upper bowl porset my hand.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Description

H. LYON.
BURNER TIP.
ICATION FILED APR. 13
APPL 1915. 1,154,421 Patentedsept. 21, 1915.
IIIIIIIIIIIIIIIIIII-IIIIIIIII IIITITIIll W l T N E S S E S N v E N T QR UNITED STATES PATENT OFFICE.
HOWARD LYON, OF GLOUCESTER CITY, NEW JERSEY, ASSIGNOR TO WELSBACI-I LIGHT COMPANY, OF GLOUCESTER CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.
BURNER-TIP- Application filed April 13, 1915.
T 0 all whom it may concern Be it known that I, HOWARD LYON, a citizen of the United States, residing at Gloucester City, in the county of Camden and State of New Jersey, have invented a new and useful Improvement in Burner- Tips, of which the following is a full, clear,
and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a side elevation of a burner tip embodying my invention; Fig. 2 is a vertical section of the same; and Figs. 8 and 4 are, respectively, bottom and top plan views of the tip.
The several figures show the tip enlarged from its actual size.
My invention has relation to burner tips, and is designed to provide a tip in which the gas and air passage or bore of the tip is so constructed as to prevent back-firing and to produce a broad flame capable of properly filling and incandescing an incandescent mantle. l/Vhen a mixture of air and gas is distributed through a nozzle having an outlet of a certain cross sectional area, it has a certain discharge velocity depending upon the cross sectional area. If the area of the outlet is reduced and the rate of flow is maintained, the velocity of fiow will be increased approximately in proportion to the diminution in the area of the outlet. If the passage is contracted at the outlet end, backfiring is prevented, but a long slender cone is produced which drives the gas forcibly through the lower portion of the mantle and results in failure of the upper portion of the mantle to properly incandesce. I have found that if a proper constriction be made in the upper portion of the bore of the tip, the back firing tendency will be limited to the point of constriction, while below this point, the issuing gases will expand in a manner to produce a broad flame capable of filling and incandescing the mantle. A further object in locating the constriction relatively high in the tip bore is that this portion of the tip is relatively much cooler than the lower portion. Hence, the back firing velocity is materially reduced at this point.
In the accompanying drawing, the numeral 2 designates the body of the tip hav- Specification of Letters Patent.
Patented Sept. 21, 1915.
Serial No. 21,027.
ing the upper threaded portion 3, adapted to be screwed into the burner tip or fixture. The lower tubular portion of the tip is shown as having the lugs 4 for engagement with the usual supporting legs of a mantle ring.
I Internally the tip has the upper chamber 5, which at its lower portion tapers downwardly and inwardly to the bore 6 of the tubular portion of the tip. This bore is constricted at 7, where it joins the cone portion of the chamber 5; and below the point 7, its cross sectional area gradually increases. The back firing in a tip of this character is in all ordinary conditions of gas quality and pressure confined entirely below the constriction '7, and in case burning should persist in the region below such constriction, a gauze, located above the constricted portion, will be unharmed.
It will be evident that any measure of protection desirable may be obtained by diminishing the diameter of the constriction. I have obtained excellent results in a tip in which the diameter of the constricted portion is seventeen sixty-fourths of an inch, while the diameter of the bore at the outlet is eleven thirty-seconds of an inch. This gives a velocity of fiow at the constricted portion which is to that at the final outlet as 484: to 289. I do not, however, limit myself to these proportions, as they may be widely varied.
The tip can be readily molded in one piece from refractory material, and is free from joints or other parts which would be in juriously affected by the heat.
I claim:
A burner tip, having an upper bowl porset my hand.
- HOIVARD LYON. Witnesses:
J. H. JorINsoN, A. M. RITCHIE.
Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,
Washington, I). G.
US2102715A 1915-04-13 1915-04-13 Burner-tip. Expired - Lifetime US1154421A (en)

Priority Applications (1)

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US2102715A US1154421A (en) 1915-04-13 1915-04-13 Burner-tip.

Applications Claiming Priority (1)

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US2102715A US1154421A (en) 1915-04-13 1915-04-13 Burner-tip.

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