US3684189A - Pressurized fuel burner - Google Patents

Pressurized fuel burner Download PDF

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Publication number
US3684189A
US3684189A US142617A US3684189DA US3684189A US 3684189 A US3684189 A US 3684189A US 142617 A US142617 A US 142617A US 3684189D A US3684189D A US 3684189DA US 3684189 A US3684189 A US 3684189A
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US
United States
Prior art keywords
burner
section
length
approximately
tip
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
US142617A
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English (en)
Inventor
Robert D Reed
John S Zink
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.)
Zinklahoma Inc
Original Assignee
John Zink 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 John Zink Co filed Critical John Zink Co
Application granted granted Critical
Publication of US3684189A publication Critical patent/US3684189A/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
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors

Definitions

  • Field of the Invention is in the field of fuel burners in which the pressure energy of the fuel is used for the purpose of inspirating combustion air into the burner tube.
  • this invention is concerned with the design of burners of high efficiency, simple construction, and shorter length than prior art burners.
  • fuel burners preferably gas burners
  • FIG. 1 is a cross-sectional view of a typical prior art pressurized fuel gas burner.
  • FIG. 2 is a cross-sectional view of the improved, shortened, pressurized fuel gas burner of this invention.
  • FIG. I is a view of a prior art fuel gas burner.
  • a prior art fuel gas burner typically has an entry section 12 tapering in inner diameter, at a conical angle of from 20-25, down to a minimal throat diameter D in many instances of a short section 16, and then an enlargement, or expansion section 18 in which the diameter varies from the throat diameter D to an outlet diameter D
  • the long expansion section 18 is broken into two parts of different conical angle 20.
  • a burner tip 30 which is of a slightly expanding configuration, but can be of varied designs, e.g., that shown in the aforesaid pending application.
  • the input section is typically of an axial length about 1.3D.
  • the short constant diameter section is generally of length about 0.8D and the long expanding section of length about 7.5D.
  • the burner tip is typically of a length of about 2.4D. This makes the burner typically of an overall length about 12D.
  • the outlet diameter D is generally of a dimension equal to 2D.
  • the burner tip 30 is generally attached to the burner by being welded 28 to an internally threaded collar 26 which is screwed onto the outer threaded surface 24 of the outlet end 21 of the burner tube.
  • a coaxial pipe 32 which has an orifice 34, in its closed off end, supplies fuel gas at superatmospheric pressure, typically twice atmospheric pressure.
  • the orifice is typically positioned a distance about D/4 in front of the entry section 14.
  • the mixed gas has a maximum velocity, and as it flows down the burner toward the outlet, the gas flow decreases in velocity, while the pressure correspondingly increases.
  • the velocity head in the throat which was necessary to inspirate the air, is converted back to pressure head in the long expansion section 18.
  • the flow velocity of the gas is inversely proportional to the square of the diameter.
  • exit velocity at 21 will be D /D times the velocity at the throat, or approximately one quarter the velocity at the throat.
  • the invention as shown in FIG. 2, reveals that a properly designed expansion section can be much shorter and still be substantially as efficient.
  • the entry section 52 and throat section 54 respectively 1.3D and 0.8D are substantially the same length as the prior art burners.
  • the expansion section is divided into two parts, a first section 56 and a second section 58.
  • the first expansion section 56 has an internal conical angle 72 of 8, and is about 1.5D long, while the second expansion section 58 has an internal conical angle 74 of about 16 leading to the outlet 60 (D
  • the length of the second expansion section is about 2D.
  • the burner tube 50 is generally made of cast iron because of the ease with which it can be cast to precise dimensions. In order to attach the burner tip 68 this invention provides a simple and effective method.
  • the outer contour of the burner tube 50 includes, at each end, cylindrical seats 62 and 64, on which a standard size of steel pipe 66 will snugly fit.
  • the pipe can be held to the burner tube by the snugness of the fit, or by means of screws, not shown, but well known in the art.
  • the burner tip 68 is designed to be of the same diameter as the pipe and is welded 70 to the end of the pipe 66.
  • the diameter of the outlet end 60 of the burner tube D is approximately equal to 2D.
  • the inlet section 52 is smoothly curved from the inlet I diameter at 80, to the throat diameter D.
  • the throat diameter D is smoothly curved from the inlet I diameter at 80, to the throat diameter D.
  • FIG. 1 conical contour of FIG. 1 can be applied to the burner of FIG. 2 without serious loss of efficiency. Also the placement of the fuel gas pipe 32 and the orifice 34 are substantially the same as in the prior art systems. The gas flow and air flow are shown respectively by arrows 76 and 78.
  • the burner length in FIG. 2 totals 5.6D exclusive of the tip, while the corresponding length of the prior art burner of FIG. 1 is approximately 9.6D. Including the burner tip the corresponding lengths are 8D and 12D respectively. Thus the length of the improved burner of this invention is approximately two thirds the length of While we have described our invention with a certain degree of particularity, the scope is not to be limited by this description or by the drawings, but only by the scope of the appended claim or claims.
  • a fuel burner in which the pressure energy of the fuel is accelerated at high velocity through and from an orifice, and into a coaxial burner tube, said burner tube comprising, sequentially a fuel-inspirated air entry and mixing section, a throat of diameter D, and an expansion section terminating in a burner tip, the movement in said expansion section comprising:
  • said burner tip includes a support pipe fitting the outer surface of said second section and extending the length of said burner tube and terminating on the outer surface of said entry section.

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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)
US142617A 1971-05-12 1971-05-12 Pressurized fuel burner Expired - Lifetime US3684189A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14261771A 1971-05-12 1971-05-12

Publications (1)

Publication Number Publication Date
US3684189A true US3684189A (en) 1972-08-15

Family

ID=22500584

Family Applications (1)

Application Number Title Priority Date Filing Date
US142617A Expired - Lifetime US3684189A (en) 1971-05-12 1971-05-12 Pressurized fuel burner

Country Status (6)

Country Link
US (1) US3684189A (de)
CA (1) CA948981A (de)
DE (1) DE2265102A1 (de)
FR (1) FR2137761A1 (de)
GB (1) GB1388628A (de)
IT (1) IT957801B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801020A (en) * 1972-12-19 1974-04-02 Src Lab Air gun and nozzle therefor
US4125360A (en) * 1976-10-28 1978-11-14 Envirotech Corporation Steam atomizing burner
EP0050391A2 (de) * 1980-10-16 1982-04-28 Nederlandse Industriele Maatschappij NEFIT B.V. Heizgerät und Verfahren zum Regeln der Verbrennung in einem solchen Heizgerät
US4629413A (en) * 1984-09-10 1986-12-16 Exxon Research & Engineering Co. Low NOx premix burner
US4874310A (en) * 1988-02-25 1989-10-17 Selas Corporation Of America Low NOX burner
US5108284A (en) * 1990-08-31 1992-04-28 Emerson Electric Co. Gas burner and method for tuning same
AT401289B (de) * 1994-05-24 1996-07-25 Vaillant Gmbh Brennerplatte
WO1999030081A1 (en) * 1997-12-09 1999-06-17 Honeywell Inc. Internal geometry shape design for venturi tube-like gas-air mixing valve
US6814570B1 (en) 2003-06-02 2004-11-09 Zeeco, Inc. Venturi mixer and combustion assembly
US7331138B1 (en) * 2002-05-02 2008-02-19 C.E. Smith Co., Inc. Rod holder
US20080155882A1 (en) * 2002-05-02 2008-07-03 Charles Wegman Rod holder
US8246344B1 (en) * 2003-07-29 2012-08-21 Samuel Schrock Gas lamp
CN102734845A (zh) * 2011-04-08 2012-10-17 林内株式会社 炉具用燃烧器
US20150354808A1 (en) * 2012-09-04 2015-12-10 Ws-Wärmeprozesstechnik Gmbh Radiant heating pipe
US20230089261A1 (en) * 2021-09-17 2023-03-23 Doosan Energbility Co., Ltd. Combustor and gas turbine having same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018887B2 (ja) * 1978-04-17 1985-05-13 松下電器産業株式会社 燃焼制御装置
FR2530317B1 (fr) * 1982-07-15 1987-05-29 Raffinage Cie Francaise Procede et dispositif pour la combustion de gaz combustibles avec induction d'air atmospherique
DE3329991A1 (de) * 1983-08-19 1985-02-28 Hans 8400 Regensburg Dendl Hochdruck-gasbrenner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1964575A (en) * 1932-06-07 1934-06-26 Charles A Hones Inc Nozzle gas burner
US1995003A (en) * 1932-04-02 1935-03-19 William E Mackenzie Gas burner
US2372953A (en) * 1940-12-27 1945-04-03 Rheem Mfg Co Burner
US2638976A (en) * 1952-12-16 1953-05-19 Patrol Valve Company Gas burner cap with branched outlet ports

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1995003A (en) * 1932-04-02 1935-03-19 William E Mackenzie Gas burner
US1964575A (en) * 1932-06-07 1934-06-26 Charles A Hones Inc Nozzle gas burner
US2372953A (en) * 1940-12-27 1945-04-03 Rheem Mfg Co Burner
US2638976A (en) * 1952-12-16 1953-05-19 Patrol Valve Company Gas burner cap with branched outlet ports

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801020A (en) * 1972-12-19 1974-04-02 Src Lab Air gun and nozzle therefor
US4125360A (en) * 1976-10-28 1978-11-14 Envirotech Corporation Steam atomizing burner
EP0050391A2 (de) * 1980-10-16 1982-04-28 Nederlandse Industriele Maatschappij NEFIT B.V. Heizgerät und Verfahren zum Regeln der Verbrennung in einem solchen Heizgerät
EP0050391A3 (en) * 1980-10-16 1982-11-17 Nederlandse Industriele Maatschappij Nefit B.V. A heater and a method of controlling the combustion in such a heater
US4629413A (en) * 1984-09-10 1986-12-16 Exxon Research & Engineering Co. Low NOx premix burner
US4874310A (en) * 1988-02-25 1989-10-17 Selas Corporation Of America Low NOX burner
US5108284A (en) * 1990-08-31 1992-04-28 Emerson Electric Co. Gas burner and method for tuning same
AT401289B (de) * 1994-05-24 1996-07-25 Vaillant Gmbh Brennerplatte
WO1999030081A1 (en) * 1997-12-09 1999-06-17 Honeywell Inc. Internal geometry shape design for venturi tube-like gas-air mixing valve
US5971026A (en) * 1997-12-09 1999-10-26 Honeywell Inc. Internal geometry shape design for venturi tube-like gas-air mixing valve
US7841124B2 (en) 2002-05-02 2010-11-30 C.E. Smith Co., Inc. Rod holder
US7331138B1 (en) * 2002-05-02 2008-02-19 C.E. Smith Co., Inc. Rod holder
US20080155882A1 (en) * 2002-05-02 2008-07-03 Charles Wegman Rod holder
US6814570B1 (en) 2003-06-02 2004-11-09 Zeeco, Inc. Venturi mixer and combustion assembly
US8246344B1 (en) * 2003-07-29 2012-08-21 Samuel Schrock Gas lamp
CN102734845A (zh) * 2011-04-08 2012-10-17 林内株式会社 炉具用燃烧器
CN102734845B (zh) * 2011-04-08 2014-11-05 林内株式会社 炉具用燃烧器
US20150354808A1 (en) * 2012-09-04 2015-12-10 Ws-Wärmeprozesstechnik Gmbh Radiant heating pipe
US20230089261A1 (en) * 2021-09-17 2023-03-23 Doosan Energbility Co., Ltd. Combustor and gas turbine having same
US11846427B2 (en) * 2021-09-17 2023-12-19 Doosan Enerbility Co., Ltd. Gas turbine combustor with fuel nozzles shaped with a diameter decreasing and increasing toward a rear side thereof

Also Published As

Publication number Publication date
DE2222990A1 (de) 1972-11-23
FR2137761A1 (de) 1972-12-29
DE2222990B2 (de) 1976-07-01
DE2265102A1 (de) 1976-03-18
CA948981A (en) 1974-06-11
GB1388628A (en) 1975-03-26
IT957801B (it) 1973-10-20

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