GB1120325A - Method and apparatus for producing flame jet - Google Patents

Method and apparatus for producing flame jet

Info

Publication number
GB1120325A
GB1120325A GB47983/65A GB4798365A GB1120325A GB 1120325 A GB1120325 A GB 1120325A GB 47983/65 A GB47983/65 A GB 47983/65A GB 4798365 A GB4798365 A GB 4798365A GB 1120325 A GB1120325 A GB 1120325A
Authority
GB
United Kingdom
Prior art keywords
flame
combustion chamber
chamber
velocity
mixing chamber
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
Application number
GB47983/65A
Inventor
Alan James Perkins
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.)
H E FLETCHER CO
Original Assignee
H E FLETCHER 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 H E FLETCHER CO filed Critical H E FLETCHER CO
Priority to GB47983/65A priority Critical patent/GB1120325A/en
Publication of GB1120325A publication Critical patent/GB1120325A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam

Abstract

1,120,325. Burners H. E. FLETCHER CO. 11 Nov., 1965, No. 47983/65. Heading F4T. [Also in Division Fl] A combustion apparatus for producing a nitrogen cooled flame jet, e.g. for rock boring, comprises, Fig. 1, a mixing chamber 2 to which is supplied kerosene fuel through pipe 6, and oxygen and nitrogen through pipes 10, 12, respectively, at such temperature that the fuel is dispersed into droplets without vaporizing. The fuel mixture passes through an aperture A in a wall 7 defining the end of the mixing chamber 2 and expands to a reduced velocity in the combustion chamber 16. The ratio of the reactants supplied to the mixing chamber 2 and the size of the apparatus are such that a proportion of the burning gases in the combustion chamber 16 recirculates to form a toroidal mass of flame T adjacent the wall 7 which ignites the incoming mixture from aperture A. The mixture velocity through aperture A is greater than the velocity of flame propagation to avoid flash-back into the mixing chamber 2, whereas the reduced velocity in the combustion chamber is lower than the flame propagation velocity. The burning gases leave the combustion chamber through an outlet 20 as a jet of flame. The apparatus is said to produce a cooler flame by the presence of the nitrogen and to operate with stable combustion over a wider range of reactant ratios. In a modification, Fig. 4, the oxygen and nitrogen are supplied to the mixing chamber in the form of compressed air rather than as separate components. In this embodiment the air passes through holes 54 in a chamber 55 to mix with liquid fuel from a nozzle 50 before entering the combustion chamber 68. Additional oxygen is supplied through a pipe 56 and passage 57 and cooling is effected by a water jacket 61 having an inlet and outlet 62, 63 respectively. In a further modification, Fig. 6 (not shown), the combustion chamber is cooled by compressed air which is eventually discharged through passages (340, 348) in the region of the flame jet.
GB47983/65A 1965-11-11 1965-11-11 Method and apparatus for producing flame jet Expired GB1120325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB47983/65A GB1120325A (en) 1965-11-11 1965-11-11 Method and apparatus for producing flame jet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB47983/65A GB1120325A (en) 1965-11-11 1965-11-11 Method and apparatus for producing flame jet

Publications (1)

Publication Number Publication Date
GB1120325A true GB1120325A (en) 1968-07-17

Family

ID=10446952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47983/65A Expired GB1120325A (en) 1965-11-11 1965-11-11 Method and apparatus for producing flame jet

Country Status (1)

Country Link
GB (1) GB1120325A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384205A1 (en) * 1977-03-18 1978-10-13 Aga Ab METHOD AND APPARATUS FOR SUPPLYING GASEOUS OXYGEN TO A FUEL COMBUSTION PROCESS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384205A1 (en) * 1977-03-18 1978-10-13 Aga Ab METHOD AND APPARATUS FOR SUPPLYING GASEOUS OXYGEN TO A FUEL COMBUSTION PROCESS

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