US3251666A - Burner for producing gaseous mixtures in centrifugal fiber attenuating apparatus - Google Patents

Burner for producing gaseous mixtures in centrifugal fiber attenuating apparatus Download PDF

Info

Publication number
US3251666A
US3251666A US162436A US16243661A US3251666A US 3251666 A US3251666 A US 3251666A US 162436 A US162436 A US 162436A US 16243661 A US16243661 A US 16243661A US 3251666 A US3251666 A US 3251666A
Authority
US
United States
Prior art keywords
grating
burner
combustion chamber
inlet opening
gaseous mixtures
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
US162436A
Other languages
English (en)
Inventor
Marcel Levecque
Maurice Charpentier
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
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 Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Application granted granted Critical
Publication of US3251666A publication Critical patent/US3251666A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
    • C03B37/048—Means for attenuating the spun fibres, e.g. blowers for spinner cups
    • 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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • 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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/74—Preventing flame lift-off
    • 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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts

Definitions

  • the present invention relates to internal combustion burners having a combustion chamber into which the gaseous combustible mixture is conducted after passage through a grating, and from which the combustion gases escape through an expansion orifice.
  • two gratings at the inlet for the combustiblecomburent or combustible gaseous mixtures in the combustion chamber.
  • Oneof these gratings which is located at the side of thegas intake, is similar to the known type of grating, and the other, placed inside the combustion chamber, is located near the first.
  • this second grating is formed of elements capable of resisting the high temperatures attained in the combustion chamber.
  • the seclond grating is formed of a plurality of silica tubes disposed in parallel, with the plane passing through their axes being itself parallel to the plane of the first grating. This arrangement facilitates the passage of the 'gases in the chamber of the burner while creating whirling currents which assure the stability of the flame.
  • the invention provides giving to the inlet passage of the gas mixture a form which flares or spreads in the part of said passage approaching the grating.
  • the invention contemplates, and this constitutes another characteristic of the invention, the location of this grating in such a way that it is not noticeably cooled bythe walls of the intake passage, and more particularly by the cooling circuit which ⁇ may exist in these walls.
  • the lirst grating instead of beingadjacent with the end of the intake passage, is located somewhat farther on, nearer the second grating, and while ⁇ a cooling circuit exists, such fa shape is given to :the conduit for the cooling agent, that the cooling effect on the grating is noticeably reduced.
  • this grating be covered with a thin coating of a substance with high heat-absorptive power.
  • metallic gratings they can be covered with an oxide slip obtained, for example, by a mixture of silicate of soda and sand.
  • the metal of the grating may be oxidized before its utilization.
  • the invention likewise contemplates the application of burners embodying all or part of the improvements described above, to the production of gases lused for the manufacture of fibers from mineral or organic materials in the viscous state, and in particular, glass fibers, according to the process which consists in subjecting the filaments of melted material projected through orifices provided at the periphery of a hollow body rotating about its axis to the action of high temperature gases.
  • the action of these high temperature gases at high speed which escape from .the expansion orifice of a combustion chamber, has the effect of changing the filaments of material projected through the orifices of the rotating body into tine fibers.
  • the burner is of annular shape and is disposed coaxially with respect to the rotating body.
  • the expansion himself is constituted by a continuous slot or a number of slots, this slotl or slots being themselves coaxial to the rotary body and the gaseous currents at high temperature and high speed which escape from the annular slot pass along the peripheral band of said body along its entire height.
  • FIG. 1 is a vertical section of the burner
  • FIG. 2 is a perspective View of a modification of the burner of the type shown in FIG. 1, featuring a nozzle for the intake of the combustible-comburent mixture;
  • FIG. 3 is a vertical section with some parts in elevation of a burner according to the invention applied to the manufacture of glass fibers by a centrifuging operation.
  • combustion chamber 1 of the burner provided with the expansion orifice 2 for the combustion gases, the edges of which are cooled by circulation of a cooling liquid through passages 5.
  • the combustion chamber is insulated from its housing 3 by refractory linings 4.
  • An apertured plate grating 6 is provided at the inlet to the combustion chamber, and this first grating 6 is arranged in the manner in which such gratings are provided in known burners of this type. Also, a second grating 7 is placed in the combustion chamber adjacent to grating 6.
  • Grating 7 may be formed of a plurality of silica tubes disposed in parallel, and the axes of which are located in a plane parallel to grating 6,
  • the tubes constituting grating 7 can be sealed in the refractory lining without the interior thereof being traversed by fluids. Nevertheless, when gaseous mixtures having particularly low combustion speeds are used, or when the speed of the mixture passing over the grating is raised, it may be advantageous to have additional heat, which may be derived from heat inside tubes 7, and which may be produced by any appropriate means, such as the passage of hot fluids, electric heating, etc. Under other conditions, when the temperatures of the chamber are very high, it may be desirable, on the contrary, to cool tubes 7 by passage of fluid therethrough, to obtain good mechanical behavior of the grating. Thus, the tubes constituting the grating 7 may have free communication with air outside the combustion chamber, and thus be cooled by a circulation of air. The tubes 7 may also be connected in a fiuid circuit for the purpose of circulating a current of cooling fluid therethrough.
  • the grating 6 is formed in one piece 8 which is recessed to fit within the inlet opening of the combustion chamber, and is provided with a flanged shoulder 8a outside said chamber to facilitate the detachable mounting of the grating within the inlet opening.
  • the inner face of said shoulder is in contact with one side of the housing 3 of the burner, and the outer face of the shoulder 8a is in contact with feed passage 9 for the combustible-comburent mixture.
  • the inlet passage 9 is formed of a double wall to delineate a chamber 10 through which a cooling agent may pass.
  • the inner wall 11 of this passage has a shape diverging toward grating 6.
  • a nozzle 12 is fastened to the inlet of passage 9, through which the cornbustible-comburent mixture is supplied into the apparatus.
  • This nozzle widens from its inlet 12a toits outlet, the form and size of which correspond to those of the inlet of passage 9. This arrangement likewise results in obtaining a good homogenization of the admission of the gaseous mixture.
  • FIG. 3 shows an example of the application of the burner according to the invention to the manufacture of fibers of mineral or organic materials in the viscous state, particularly glass fibers.
  • This burner is annular in shape, and its-expansion orifice 2 is formed either as a -single continuous slot or as a plurality of arcuate slots.
  • This burner is disposed coaxially with respect to a centrifuge body 13 rotating at high speed about its axis.
  • the body 13 has a peripheral wall or band 15 provided with a large number of orifices 14 therein through which the melted material introduced into the interior of the rotating body is projected in the form of filaments by the action of centrifugal force.
  • the gases of combustion which escape at high speed from slot 2 of the burner act uniformly on all these filaments when they leave the projection orifices 15 and transform them into fine fibers.
  • the combustible-comburent mixture maybe introduced into the combustion chamber through a plurality of radially displaced inlet passages 9; for example, six of such inlets may be employed, displaced at sixty degree intervals.
  • an internal combustion burner for combustible gaseous mixtures comprising a combustion chamber having an inlet opening in one wall thereof and a restricted outlet opening in another wall thereof from which the burnt gases escape at a very high speed and at high temperature, an apertured plate grating in said inlet opening, and a second grating within said combustion chamber separate and distinct from said plate grating and spaced slightly therefrom.
  • yan internal combustion burner for combustible gaseous mixtures comprising a combustion chamber having an inlet opening in one wall thereof and a restricted outlet opening in another wall thereof from which the burnt gases escape at a very high speed and at high temperature, a substantially rectangular apertured plate grating mounted within said inlet opening, a second grating within said combustion chamber separate and distinct from said plate grating and -spaced slightly therefrom, an inlet passage communicating with said inlet opening having substantially the same cross-section as said plate grating, a nozzle connected to said inlet passage and of a cross-section conforming substantially to that of said inlet passage, and an intermediate conduit of smoothly fiaring cross-section between the inlet and outlet of said nozzle.
  • an internal combustion burner for combustible gaseous mixtures comprising a combustion chamber having an inlet opening in one wall thereof and an outlet opening in another Wall thereof, an apertured plate grating in said inlet opening, land a second grating within said combustion chamber adjacent to said plate grating and composed of a plurality of hollow heat exchange tubes arranged in parallel and disp'oed in a plane parallel to that ofthe plate grating.
  • an internal combustion burner for combustible gaseous mixtures comprising a combustion chamber having an inlet opening in one Wall thereof and an outlet opening in another wall thereof, an apertured plate grating in said inlet opening, and a second grating within said combustion chamber adjacent to said plate grating and composed of a plurality of hollow heat exchange tubes arranged in parallel and disposed in a plane parallel to that of the plate grating, said tubes being open to the atmosphere to obtain a natural circulation of cooling fluid therethrough.
  • an internal combustion burner for combustible gaseous mixtures comprising a combustion chamber having an inlet opening in one wall there-of and an outlet opening in another wall thereof, an apertured plate grating in said inlet opening, and a second grating within said combustion chamber adjacent to said plate grating and composed of a plurality of hollow heat exchange tubes arranged in parallel and disposed in a plane parallel to that of the plate grating, said tubes being connected to a circulating Isystem containing heating or cooling uid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Gas Burners (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
US162436A 1961-01-05 1961-12-27 Burner for producing gaseous mixtures in centrifugal fiber attenuating apparatus Expired - Lifetime US3251666A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR848869A FR1292222A (fr) 1961-01-05 1961-01-05 Perfectionnements aux brûleurs à combustion interne

Publications (1)

Publication Number Publication Date
US3251666A true US3251666A (en) 1966-05-17

Family

ID=8746131

Family Applications (1)

Application Number Title Priority Date Filing Date
US162436A Expired - Lifetime US3251666A (en) 1961-01-05 1961-12-27 Burner for producing gaseous mixtures in centrifugal fiber attenuating apparatus

Country Status (5)

Country Link
US (1) US3251666A (fr)
CH (2) CH385395A (fr)
ES (1) ES273445A1 (fr)
FR (1) FR1292222A (fr)
GB (1) GB956174A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544254A (en) * 1966-07-20 1970-12-01 Saint Gobain Burners for producing gaseous mixtures in centrifugal fiber attenuating apparatus
US4106921A (en) * 1976-09-13 1978-08-15 United States Gypsum Company Apparatus for low pressure air fiberization of mineral fiber
US4453914A (en) * 1982-12-15 1984-06-12 The United States Of America As Represented By The Secretary Of The Air Force Low heat loss laser combustion chamber
US4650416A (en) * 1985-11-08 1987-03-17 The United States Of America As Represented By The Secretary Of The Air Force NF3 combustor for cylindrical laser

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1045466A (en) * 1910-07-11 1912-11-26 Zandt Gas Appliance Company Van Gas-grate.
US1310928A (en) * 1919-07-22 Method and apparatus for burning combustible fluids
US2117605A (en) * 1936-12-18 1938-05-17 Albert A Fowler Method of making light-weight molded material
US2605821A (en) * 1941-02-01 1952-08-05 Lindahl Henning Waldemar Automatically controlled burner apparatus for heating automobile engines
US2676899A (en) * 1951-04-04 1954-04-27 Kaiser Metal Products Inc Method of coating foraminous metal with vitreous enamel
FR1127561A (fr) * 1955-02-28 1956-12-19 Saint Gobain Perfectionnements aux dispositifs pour la fabrication de fibres à partir de matières thermoplastiques telles que le verre

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310928A (en) * 1919-07-22 Method and apparatus for burning combustible fluids
US1045466A (en) * 1910-07-11 1912-11-26 Zandt Gas Appliance Company Van Gas-grate.
US2117605A (en) * 1936-12-18 1938-05-17 Albert A Fowler Method of making light-weight molded material
US2605821A (en) * 1941-02-01 1952-08-05 Lindahl Henning Waldemar Automatically controlled burner apparatus for heating automobile engines
US2676899A (en) * 1951-04-04 1954-04-27 Kaiser Metal Products Inc Method of coating foraminous metal with vitreous enamel
FR1127561A (fr) * 1955-02-28 1956-12-19 Saint Gobain Perfectionnements aux dispositifs pour la fabrication de fibres à partir de matières thermoplastiques telles que le verre
US3017663A (en) * 1955-02-28 1962-01-23 Saint Gobain Apparatus for producing fibers from thermoplastic material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544254A (en) * 1966-07-20 1970-12-01 Saint Gobain Burners for producing gaseous mixtures in centrifugal fiber attenuating apparatus
US4106921A (en) * 1976-09-13 1978-08-15 United States Gypsum Company Apparatus for low pressure air fiberization of mineral fiber
US4453914A (en) * 1982-12-15 1984-06-12 The United States Of America As Represented By The Secretary Of The Air Force Low heat loss laser combustion chamber
US4650416A (en) * 1985-11-08 1987-03-17 The United States Of America As Represented By The Secretary Of The Air Force NF3 combustor for cylindrical laser

Also Published As

Publication number Publication date
DE1401855B2 (de) 1973-01-18
CH385395A (fr) 1964-12-15
GB956174A (en) 1964-04-22
FR1292222A (fr) 1962-05-04
CH514103A (fr) 1971-10-15
ES273445A1 (es) 1962-04-16
DE1401855A1 (de) 1968-10-24

Similar Documents

Publication Publication Date Title
US2367119A (en) Method of and apparatus for heating
US2624912A (en) Process and apparatus for the production of fibers from thermoplastics
US3224679A (en) Combustion device for hydrocarbon fuel
US2515738A (en) Apparatus for producing glass fibers
US2578101A (en) Apparatus for producing fibers from glass and other heat softenable materials
US2614619A (en) Burner and nozzle tip for projecting hot products of combustion
RU2100298C1 (ru) Способ изготовления минеральной ваты и устройство для образования волокон путем внутреннего центрифугирования
US4534779A (en) Method and apparatus for heating a mineral fiber forming spinner
GB611623A (en) Improvements in or relating to the production of fibres, particularly glass fibres
GB648909A (en) Improvements in or relating to the production of fibres from thermoplastic materialssuch as glass
US3254977A (en) Process and apparatus for production of fibers from thermoplastic material, particularly glass fibers
US3251666A (en) Burner for producing gaseous mixtures in centrifugal fiber attenuating apparatus
GB871396A (en) Method and apparatus for making fibers
US2991507A (en) Manufacture of fibers from thermoplastic materials such as glass
US3030659A (en) Apparatus for producing fibers
US3045278A (en) Fiber forming torch
GB529189A (en) Improvements in or relating to the production of artificial fibres
US3133805A (en) Glass bead making furnace
US3219425A (en) Method and apparatus for forming glass fibers
US3028623A (en) Apparatus for producing a low density mat of glass fibers
US3233992A (en) Apparatus for production of fine glass fibers
US2569699A (en) Method and apparatus for forming glass fibers
US3282066A (en) Apparatus for making glass beads
US2455908A (en) Method of making glass fibers
US2578100A (en) Method and apparatus for forming fibers