US3368605A - Burner assembly for lean fuel gases - Google Patents

Burner assembly for lean fuel gases Download PDF

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US3368605A
US3368605A US524727A US52472766A US3368605A US 3368605 A US3368605 A US 3368605A US 524727 A US524727 A US 524727A US 52472766 A US52472766 A US 52472766A US 3368605 A US3368605 A US 3368605A
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central opening
tubular member
air
chamber
fuel gas
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US524727A
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Robert D Reed
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Zinklahoma Inc
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John Zink Co
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    • 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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • 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
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14002—Special features of gas burners of premix or non premix types, specially adapted for the combustion of low heating value [LHV] gas

Definitions

  • the present invention relates to apparatus for the combustion of gaseous materials and the invention more specifically pertains to a burner assembly wherein gases of low heat value are burned under a self-sustaining combustion conditions so that the heat developed from the burning of the combustible components in waste gases may be recovered for useful purposes.
  • gases are produced and many carry combustible components.
  • the combustibles present in such gaseous products are usually in the low mol-percentage range and often contain less than two hundred British thermal units for each cubic foot of gas.
  • Such low heat content gases are difiicult to burn under self-sustaining combustion conditions.
  • Equipment for treating such gaseous products and auxiliary apparatus in association with the burner have been employed in the past to burn such gases but because of the costs of such equipment and apparatus such gases have often been disposed to waste which also involves considerable expense.
  • a more specific object of the invention is to provide apparatus for the combustion of fuel gases of low heat content wherein air for mixing with the fuel gases is caused to move circumferentially as the fuel is delivered into the whirling air to thereby maintain the fuel mixture within the burning zone for a protracted period and to provide means for preventing the rapid transfer of heat from the combustion zone thereby maintaining a high temperature within the burner assembly wherein the combustion reactions can proceed at a high rate and thereby insure self-sustaining combustion of a lean gaseous fuel.
  • Another object of the invention is to provide structure within the burner assembly insuring thorough mixing of adequate quanities of air with the fuel gas to provide a stoichiometric mixture of the fuel gas and air within the heat shielded portion of the assembly to provide for burning time and temperature levels within the combustion zone which insure stable burning of lean fuel gases.
  • FIG. 1 is a sectional view taken along the axis of a burner assembly exhibiting the invention.
  • FIG. 2 is a fragmentary sectional view taken on the line 22 of FIG. 1.
  • FIG. 3 is a fragmentary development view of the vane assembly taken generally on the line 3-3 of FIG. 2.
  • a burner assembly embodying the invention is shown a ICC.
  • the burner assembly includes an annular shaped ceramic member 10 with an end portion extending into the water tube 12 with the outer surface disposed along the corrugated wall 11.
  • the ceramic member 10 has a central opening and the downstream end of the cylindrical wall surface 14 is defined by the annular shoulder 16 which has a face arranged in a plane at right angles to the axis of the burner assembly and the axis ofthe central opening in the ceramic member 10.
  • a larger diameter opening is provided in the downstream end portion of the ceramic member 10 to provide a cylindrical wall surface 18 spaced inwardly from the corrugated wall 11 of the water tube 12.
  • a housing 21 surrounds the upstream portion of the ceramic member 10 and may be secured to the boiler tube structure by means of a flange 22 and bolts 23.
  • the upstream end of the cylindrical housing 21 is closed by means of an end wall 24 and a detachable disc-shaped element 26 as shown in FIG. 1.
  • An annular wall 27 is mounted within the housing 21 and arranged coaxially therein.
  • a ring shaped plate 28 covers the upstream end of the ceramic member 10 and it may be joined to the cylindrical housing 21 and to the annular wall 27 in any suitable manner such as by welding.
  • the cylindrical wall 27 may likewise be welded to the end wall 24 to provide an annular chamber 31 within the housing'Zl.
  • An inlet opening 32 is provided in the perimeter of the housing 21 and a duct 33 extends radially outward therefrom whereby air under pressure greater than atmospheric may be delivered into the chamber 31.
  • the incoming air moves in a direction which is radially of the annular wall 27 which acts as a baflle to distribute the air in the direction of the arrows 34 and 36 in FIG. 2.
  • the annular wall 27 is proviled with two openings 37 and 38 which are arranged diametrically of each other as best shown in FIG. 2.
  • the openings 37 and 38 are circumferentially displaced from the inlet opening by approximately ninety degrees. The velocity of the air entering through the inlet opening 32 is virtually dissipated by impact with the wall 27 and a supply of air is stored in the chamber 31.
  • a tubular member 41 extends through an opening in the disc-shaped element 26 and is disposed substantially concentrically with the annular wall 27. The downstream end of the tubular member 41 terminates within the central opening in the ceramic member 10'.
  • An annular chamber 45 is provided between the annular wall 27 and the tubular member 41.
  • a lean fuel gas is admitted into the tubular member 41 through a conduit fit ting 42.
  • a guide tube 44 extends along the axis of the tubular member 41 and carries a frusto-conical element 46 at the end thereof spaced from the downstream end of the tubular member 41. The fuel gas is thus deflected in generally radially outward directions by impingement with the concave face of the generally frusto-conical shaped element 46.
  • the guide tube 44 may be supported at the downstream end in any suitable manner (not shown).
  • the burner assembly includes means which insures mixing of air with the fuel gas and also functions to retain the mixture within the ceramic member for a protracted period to develop a high temperature combustion zone.
  • Such means takes the form of a vane unit 48.
  • This unit is supported on the tubular member 41 by a ring member which is L-shaped in section and which is attached to the downstream end of the tubular member 41.
  • a flange 49 of the ring member carries a plurality of vanes 51 which radiate therefrom.
  • the vanes 51 are of such lengths measured radially thereof that the outer ends fit within the central opening in the ceramic member 10 and are in abutting relationship with the cylindrical wall surface 14.
  • the vane unit also supports the inner end of the tubular member 41 to maintain it substantially concentric with the axis of the burner assembly.
  • Each of the vanes 51 is arranged in one plane as best shown in FIG. 3 and all of the vanes are inclined in the same direction in proceeding in one direction circnmferentially of the assembly.
  • the vanes 51 are so constructed and arranged that the downstream edge portion of one vane 51 overlaps the upstream edge portion of an adjacent vane and this overlap area 53 is indicated by dotted lines in FIG. 3.
  • air moving from the chamber 45 is forced to move by the vanes 51 circumferentially within the central opening in the ceramic member 10.
  • the overlapping of the downstream edge portion of one vane with the upstream edge portion of another vane insures that there will be no axial movement of the air as it passes through the vane unit 48.
  • the radial web of the ring member which supports the vanes 51 is provided with a plurality of circumferentially spaced relatively small ports 56 as shown in FIGS. 1 and 2 through which minor quantities of air may move from the chamber 45 into the ring member.
  • the tubular member 41 is also provided with a plurality of relatively small circumferentially spaced ports 57 (FIG. 1) through which small quantities of the fuel gas may escape to a position within the ring member.
  • the air escaping through the ports 56 is mixed with the gas escaping through the ports 57 and this mixture is shielded from the lean fuel gas moving in space between the guide tube 44 and the tubular member 41 and the air-gas mixture within the ring member is shielded from the air passing over the vanes 51.
  • air under pressure is supplied into the chamber 31 through the inlet duct 33.
  • the entering air impinges against the annular wall 27 and is accommodated in the chamber 31 virtually free of velocity.
  • the air passes into the chamber 45 through the openings 37 and 38.
  • the pressure within the chamber 45 is less than that in the chamber 31.
  • the pressure in the chamber 45 is greater than the pressure Within the combustible zone or the area 58.
  • a circumferential component is imparted to the air as its velocity increases in passing between the vanes 51 so that the air moves circumferentially along the cylindrical surface 14 as a whirling air mass.
  • the lean fuel gas supplied through the inlet conduit 42 moves axially within the tubular member 41 and is diverted generally radially outward into the whirling air.
  • a pronounced pressure drop results from the air moving over the vane unit 48 and creates a low pressure condition for the air in the area represented at 61 in FIG. 1 which tends to draw the fuel gas thereinto whereby fuel gas is mixed with the air. Combustion is initiated and the burning of the fuel takes place in an annular area represented at 62 in FIG. 1.
  • the pressure drop as a consequence of the air fiowing through the vanes 51 develops a pressure in the area 61 which is lower than atmospheric and lower than the pressure in the area 58.
  • the low pressure in the area 61 develops a low pressure zone at 63 which is less than the pressure in the area at 58 but greater than the pressure in an annular area 64 adjacent the cylindrical wall surface 18.
  • the insulating character of the ceramic member prevents rapid loss of heat to the fire tube 12.
  • the hot gases as indicated by the dotted arrows 66 return to the central portion of the combustion zone to provide added heat for maintaining of the temperature of both the air and the gas to the auto-ignition temperature of the fuel mixture.
  • the shoulder 16 serves to develop eddies of the burning fuel as indicated by the arrows to further maintain a high temperature in the combustion zone.
  • An auxiliary fuel burning device may be provided for insuring stable burning if the heat content of the fuel gas is inadequate for a required quantity of heat.
  • a burner nozzle 63 may be introduced through the guide tube 44 and arranged within the frusto-conical element 46 for discharging fuel of a high heat value within the combustion zone.
  • a ceramic member having a central opening therein defined by a substantially cylindrical surface, said ceramic member having a second opening at the downstream end thereof defined by a substantially cylindrical surface of larger diameter than said central opening, an annular shoulder on the ceramic member disposed in a plane substantially at a right angle to the axis of said central opening and defining the downstream end thereof and defining the upstream end of the second opening, a tubular member extending into the upstream portion of the central opening for guiding fuel gas thereinto, means for diverting the fuel gas generally radially outwardly from said tubular member adjacent the upstream portion of said central opening, means providing an annular chamber around said tubular member, means for guiding air into said chamber, a vane unit disposed around said tubular member within the upstream portion of said central opening, said vane unit having vanes which slope in the same manner in proceeding in one direction circumferentially of the ceramic member, the downstream edge portion of each vane overlapping the upstream

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

Description

Feb. 13, 1968 R. D. REED BURNER ASSEMBLY FOR LEAN FUEL GASES Filed Feb. 5, 1966 l/vvE/vrak ROBERT D. REED" 19 ATTORNEY United States Patent 3,368,605 BURNER ASSEMBLY FOR LEAN FUEL GASES Robert D. Reed, Tulsa, Okla., assignor to John Zink Company, Tulsa, Okla, a corporation of Delaware Filed Feb. 3, 1966, Ser. No. 524,727 2 Claims. (Cl. 1587) The present invention relates to apparatus for the combustion of gaseous materials and the invention more specifically pertains to a burner assembly wherein gases of low heat value are burned under a self-sustaining combustion conditions so that the heat developed from the burning of the combustible components in waste gases may be recovered for useful purposes.
In the chemical and process industries gases are produced and many carry combustible components. The combustibles present in such gaseous products are usually in the low mol-percentage range and often contain less than two hundred British thermal units for each cubic foot of gas. Such low heat content gases are difiicult to burn under self-sustaining combustion conditions. Equipment for treating such gaseous products and auxiliary apparatus in association with the burner have been employed in the past to burn such gases but because of the costs of such equipment and apparatus such gases have often been disposed to waste which also involves considerable expense.
It is accordingly an object of the present invention to provide apparatus for the combustion of lean fuel gases without the necessity of providing equipment for pretreatment of such gaseous products and without the necessity of employing complicated apparatus in order to provide for stable combustion of the diluted fuel gases.
A more specific object of the invention is to provide apparatus for the combustion of fuel gases of low heat content wherein air for mixing with the fuel gases is caused to move circumferentially as the fuel is delivered into the whirling air to thereby maintain the fuel mixture within the burning zone for a protracted period and to provide means for preventing the rapid transfer of heat from the combustion zone thereby maintaining a high temperature within the burner assembly wherein the combustion reactions can proceed at a high rate and thereby insure self-sustaining combustion of a lean gaseous fuel.
Another object of the invention is to provide structure within the burner assembly insuring thorough mixing of adequate quanities of air with the fuel gas to provide a stoichiometric mixture of the fuel gas and air within the heat shielded portion of the assembly to provide for burning time and temperature levels within the combustion zone which insure stable burning of lean fuel gases.
Other objects and features of the invention will be appreciated and become apparent to those skilled in the art to which the invention pertains as the present disclosure proceeds and upon consideration of the following detailed description taken in conjunction with the accompanying drawing wherein apparatus embodying the invention is disclosed.
In the drawing:
FIG. 1 is a sectional view taken along the axis of a burner assembly exhibiting the invention.
FIG. 2 is a fragmentary sectional view taken on the line 22 of FIG. 1.
FIG. 3 is a fragmentary development view of the vane assembly taken generally on the line 3-3 of FIG. 2.
A burner assembly embodying the invention is shown a ICC.
in the drawing in operative relationship with a Scotch- Marine Boiler wherein heat rapidly transfers from the combustion zone to a corrugated fire tube and to the water therein. It will be appreciated that the burner assembly may be employed for other purposes and for heating any type of structure or for firing into a furnace chamber. The burner assembly includes an annular shaped ceramic member 10 with an end portion extending into the water tube 12 with the outer surface disposed along the corrugated wall 11. The ceramic member 10 has a central opening and the downstream end of the cylindrical wall surface 14 is defined by the annular shoulder 16 which has a face arranged in a plane at right angles to the axis of the burner assembly and the axis ofthe central opening in the ceramic member 10. A larger diameter opening is provided in the downstream end portion of the ceramic member 10 to provide a cylindrical wall surface 18 spaced inwardly from the corrugated wall 11 of the water tube 12.
A housing 21 surrounds the upstream portion of the ceramic member 10 and may be secured to the boiler tube structure by means of a flange 22 and bolts 23. The upstream end of the cylindrical housing 21 is closed by means of an end wall 24 and a detachable disc-shaped element 26 as shown in FIG. 1. An annular wall 27 is mounted within the housing 21 and arranged coaxially therein. A ring shaped plate 28 covers the upstream end of the ceramic member 10 and it may be joined to the cylindrical housing 21 and to the annular wall 27 in any suitable manner such as by welding. The cylindrical wall 27 may likewise be welded to the end wall 24 to provide an annular chamber 31 within the housing'Zl.
An inlet opening 32 is provided in the perimeter of the housing 21 and a duct 33 extends radially outward therefrom whereby air under pressure greater than atmospheric may be delivered into the chamber 31. The incoming air moves in a direction which is radially of the annular wall 27 which acts as a baflle to distribute the air in the direction of the arrows 34 and 36 in FIG. 2. The annular wall 27 is proviled with two openings 37 and 38 which are arranged diametrically of each other as best shown in FIG. 2. The openings 37 and 38 are circumferentially displaced from the inlet opening by approximately ninety degrees. The velocity of the air entering through the inlet opening 32 is virtually dissipated by impact with the wall 27 and a supply of air is stored in the chamber 31.
A tubular member 41 extends through an opening in the disc-shaped element 26 and is disposed substantially concentrically with the annular wall 27. The downstream end of the tubular member 41 terminates within the central opening in the ceramic member 10'. An annular chamber 45 is provided between the annular wall 27 and the tubular member 41. A lean fuel gas is admitted into the tubular member 41 through a conduit fit ting 42. A guide tube 44 extends along the axis of the tubular member 41 and carries a frusto-conical element 46 at the end thereof spaced from the downstream end of the tubular member 41. The fuel gas is thus deflected in generally radially outward directions by impingement with the concave face of the generally frusto-conical shaped element 46. The guide tube 44 may be supported at the downstream end in any suitable manner (not shown).
The burner assembly includes means which insures mixing of air with the fuel gas and also functions to retain the mixture within the ceramic member for a protracted period to develop a high temperature combustion zone. Such means takes the form of a vane unit 48. This unit is supported on the tubular member 41 by a ring member which is L-shaped in section and which is attached to the downstream end of the tubular member 41. A flange 49 of the ring member carries a plurality of vanes 51 which radiate therefrom. The vanes 51 are of such lengths measured radially thereof that the outer ends fit within the central opening in the ceramic member 10 and are in abutting relationship with the cylindrical wall surface 14. The vane unit also supports the inner end of the tubular member 41 to maintain it substantially concentric with the axis of the burner assembly.
Each of the vanes 51 is arranged in one plane as best shown in FIG. 3 and all of the vanes are inclined in the same direction in proceeding in one direction circnmferentially of the assembly. The vanes 51 are so constructed and arranged that the downstream edge portion of one vane 51 overlaps the upstream edge portion of an adjacent vane and this overlap area 53 is indicated by dotted lines in FIG. 3. Thus air moving from the chamber 45 is forced to move by the vanes 51 circumferentially within the central opening in the ceramic member 10. The overlapping of the downstream edge portion of one vane with the upstream edge portion of another vane insures that there will be no axial movement of the air as it passes through the vane unit 48.
The radial web of the ring member which supports the vanes 51 is provided with a plurality of circumferentially spaced relatively small ports 56 as shown in FIGS. 1 and 2 through which minor quantities of air may move from the chamber 45 into the ring member. The tubular member 41 is also provided with a plurality of relatively small circumferentially spaced ports 57 (FIG. 1) through which small quantities of the fuel gas may escape to a position within the ring member. The air escaping through the ports 56 is mixed with the gas escaping through the ports 57 and this mixture is shielded from the lean fuel gas moving in space between the guide tube 44 and the tubular member 41 and the air-gas mixture within the ring member is shielded from the air passing over the vanes 51. There is slow burning of the mixture within the ring member and this assists in starting the burner particularly when the structure is cold.
In operation air under pressure is supplied into the chamber 31 through the inlet duct 33. The entering air impinges against the annular wall 27 and is accommodated in the chamber 31 virtually free of velocity. The air passes into the chamber 45 through the openings 37 and 38. The pressure within the chamber 45 is less than that in the chamber 31. The pressure in the chamber 45 is greater than the pressure Within the combustible zone or the area 58. There is a drop in pressure as the air moves through the vane unit 48. A circumferential component is imparted to the air as its velocity increases in passing between the vanes 51 so that the air moves circumferentially along the cylindrical surface 14 as a whirling air mass. The lean fuel gas supplied through the inlet conduit 42 moves axially within the tubular member 41 and is diverted generally radially outward into the whirling air. A pronounced pressure drop results from the air moving over the vane unit 48 and creates a low pressure condition for the air in the area represented at 61 in FIG. 1 which tends to draw the fuel gas thereinto whereby fuel gas is mixed with the air. Combustion is initiated and the burning of the fuel takes place in an annular area represented at 62 in FIG. 1.
The pressure drop as a consequence of the air fiowing through the vanes 51 develops a pressure in the area 61 which is lower than atmospheric and lower than the pressure in the area 58. The low pressure in the area 61 develops a low pressure zone at 63 which is less than the pressure in the area at 58 but greater than the pressure in an annular area 64 adjacent the cylindrical wall surface 18. These pressure zones and the contour of the ceramic member 10 induce the return of hot gases as represented at the arrows 66 into the central portion of the combustion zone. Thus the forward or downstream movement of the burning gas is checked and held close to the burner head and in the zone where the gas escapes from the tubular member 41.
The burning accordingly takes place principally in the annular area 62 which is shielded by the ceramic member 10. The insulating character of the ceramic member prevents rapid loss of heat to the fire tube 12. Thus the temperature is maintained at a high level within the ceramic member 10 and the combustion reactions proceed at a high rate as a consequence of the high temperature to promote self-sustaining combustion and stable burning of a lean fuel gas. The hot gases as indicated by the dotted arrows 66 return to the central portion of the combustion zone to provide added heat for maintaining of the temperature of both the air and the gas to the auto-ignition temperature of the fuel mixture. The shoulder 16 serves to develop eddies of the burning fuel as indicated by the arrows to further maintain a high temperature in the combustion zone.
An auxiliary fuel burning device may be provided for insuring stable burning if the heat content of the fuel gas is inadequate for a required quantity of heat. A burner nozzle 63 may be introduced through the guide tube 44 and arranged within the frusto-conical element 46 for discharging fuel of a high heat value within the combustion zone.
While the invention has been described with reference to a fuel burner assembly in association with one type of boiler to be heated it will be appreciated that the burner assembly has utility for other heating purposes. Various modifications may be made in the elements of the assembly as well as changes in the overall organization. Such modifications and others may be made without departing from the spirit and scope of the invention as set forth in the appended claims.
What I claim and desire to secure by Letters Patent 1. In apparatus for the combustion of lean fuel gases, a ceramic member having a central opening therein defined by a substantially cylindrical surface, said ceramic member having a second opening at the downstream end thereof defined by a substantially cylindrical surface of larger diameter than said central opening, an annular shoulder on the ceramic member disposed in a plane substantially at a right angle to the axis of said central opening and defining the downstream end thereof and defining the upstream end of the second opening, a tubular member extending into the upstream portion of the central opening for guiding fuel gas thereinto, means for diverting the fuel gas generally radially outwardly from said tubular member adjacent the upstream portion of said central opening, means providing an annular chamber around said tubular member, means for guiding air into said chamber, a vane unit disposed around said tubular member within the upstream portion of said central opening, said vane unit having vanes which slope in the same manner in proceeding in one direction circumferentially of the ceramic member, the downstream edge portion of each vane overlapping the upstream edge portion of an adjacent vane whereby substantially all of the air from said chamber in moving through said vanes is deflected circumferentiaily within the central opening and in the presence of the diverted fuel gas, and means releasing minor quantities of air from said chamber and minor quantities of fuel gas from within said tubular member at locations radially inwardly of said vane unit for axial downstream movement around said fuel diverting means.
2. In apparatus for the combustion of lean fuel gases according to claim 1 wherein the outer ends of said vanes are in abutting relationship with the cylindrical surface of the central opening.
References Cited UNITED STATES PATENTS 2,855,033 10/1958 Furczyk 1587 X 6 2,976,919 3/1961 San-born 158-1.5 X 3,195,609 '7/1965 Nesbitt et a1. 158-15 X FOREIGN PATENTS 303,030 1/ 1955 Switzerland.
FREDERICK L. MATTESON, IR., Primary Examiner. E. G. FAVORS, Assistant Examiner.

Claims (1)

1. IN APPARATUS FOR THE COMBINATION OF LEAN FUEL GASES, A CERAMIC MEMBER HAVING A CENTRAL OPENING THEREIN DEFINED BY A SUBSTANTIALLY CYLINDRICAL SURFACE, SAID CERAMIC MEMBER HAVING A SECOND OPENING AT THE DOWNSTREAM END THEREOF DEFINED BY A SUBSTANTIALLY CYLINDRICAL SURFACE OF LARGER DIAMETER THAN SAID CENTRAL OPENING, AN ANNULAR SHOULDER ON THE CERAMIC MEMBER DISPOSED IN A PLANE SUBSTANTIALLY AT A RIGHT ANGLE TO THE AXIS OF SAID CENTRAL OPENING AND DEFINING THE DOWNSTREAM END THEREOF AND DEFINING THE UPSTREAM END OF THE SECOND OPENING, A TUBULAR MEMBER EXTENDING INTO THE UPSTREAM PORTION OF THE CENTRAL OPENING FOR GUIDING FUEL GAS THEREINTO, MEANS FOR DIVERTING THE FUEL GAS GENERALLY RADIALLY OUTWARDLY FROM SAID TUBULAR MEMBER ADJACENT THE UPSTREAM PORTION OF SAID CENTRAL OPENING, MEANS PROVIDING AN ANNULAR CHAMBER AROUND SAID TUBULAR MEMBER, MEANS FOR GUIDING AIR INTO SAID CHAMBER, A VANE UNIT DISPOSED AROUND SAID TUBULAR MEMBER WITHIN THE UPSTREAM PORTION OF SAID CENTRAL OPENING, SAID VANE UNIT HAVING VANES WHICH SLOPE IN THE SAME MANNER IN PROCEEDING IN ONE DIRECTION CIRCUMFERENTIALLY OF THE CERAMIC MEMBER, THE DOWNSTREAM EDGE PORTION OF EACH VANE OVERLAPPING THE UPSTREAM EDGE PORTION OF AN ADJACENT VANE WHEREBY SUBSTANTIALLY ALL OF THE AIR FROM SAID CHAMBER IN MOVING THROUGH SAID VANES IS DEFLECTED CIRCUMFERENTIALLY WITHIN THE CENTRAL OPENING AND IN THE PRESENCE OF THE DIVERTED FUEL GAS, AND MEANS RELEASING MINOR QUANTITIES OF AIR FROM SAID CHAMBER AND MINOR QUANTITIES OF FUEL GAS FROM WITHIN SAID TUBULAR MEMBER AT LOCATIONS RADIALLY INWARDLY OF SAID VANE UNIT FOR AXIAL DOWNSTREAM MOVEMENT AROUND SAID FUEL DIVERTING MEANS.
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Cited By (20)

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US3711243A (en) * 1971-02-02 1973-01-16 Zink Co John Regenerative tile for fuel burner
US3718102A (en) * 1971-10-29 1973-02-27 Midland Ross Corp Combustion apparatus
US3752634A (en) * 1970-08-18 1973-08-14 Mitsubishi Heavy Ind Ltd Burner
US3775039A (en) * 1971-01-22 1973-11-27 Gen Chauffage Ind Pillard Frer Burners for liquid or gaseous fuels
JPS49835A (en) * 1972-03-09 1974-01-07
JPS5091179A (en) * 1973-12-12 1975-07-21
US3960504A (en) * 1973-09-17 1976-06-01 Griffin Research & Development, Inc. Polluted air effluent incinerating apparatus
US4044099A (en) * 1973-09-17 1977-08-23 Griffin Research & Development, Inc. Polluted air effluent incinerating method
US4045160A (en) * 1976-02-09 1977-08-30 Lee Wilson Engineering Company, Inc. Flat-flame gas burner
US4081233A (en) * 1975-06-19 1978-03-28 Matsushita Electric Industrial Co., Ltd. Combustion device
US4105395A (en) * 1976-11-19 1978-08-08 John Zink Company Regenerative tile structure for fuel burners
US4402666A (en) * 1980-12-09 1983-09-06 John Zink Company Forced draft radiant wall fuel burner
US5029557A (en) * 1987-05-01 1991-07-09 Donlee Technologies, Inc. Cyclone combustion apparatus
WO1991015712A1 (en) * 1987-05-01 1991-10-17 Donlee Technologies, Inc. Cyclone combustion apparatus
US5873712A (en) * 1996-08-02 1999-02-23 Guerra; Romeo E. Flame arrested eductor flare stack
US6036480A (en) * 1996-02-16 2000-03-14 Aos Holding Company Combustion burner for a water heater
US6461145B1 (en) * 1999-02-25 2002-10-08 Stein Heurtey Flat flame burners
US20080149093A1 (en) * 2006-12-20 2008-06-26 Dae Rae Lee Heating cooking appliance and burner system thereof
US20080227040A1 (en) * 2005-07-26 2008-09-18 Optimise, Societe A Responsabilite Limitee Method and Installation for Unsupported Lean Fuel Gas Combustion, Using a Burner and Related Burner
EP3364105A1 (en) * 2017-02-16 2018-08-22 Vysoké ucení Technické v Brne Burner head for low calorific fuels

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CH303030A (en) * 1952-08-15 1954-11-15 Bbc Brown Boveri & Cie Gas burners, preferably for the combustion chambers of gas turbine systems.
US2855033A (en) * 1955-10-03 1958-10-07 Selas Corp Of America Industrial gas burner
US2976919A (en) * 1956-05-29 1961-03-28 Bell & Gossett Co Oil burners
US3195609A (en) * 1960-11-28 1965-07-20 Midland Ross Corp Self stabilizing radiant tube burner

Cited By (23)

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US3752634A (en) * 1970-08-18 1973-08-14 Mitsubishi Heavy Ind Ltd Burner
US3775039A (en) * 1971-01-22 1973-11-27 Gen Chauffage Ind Pillard Frer Burners for liquid or gaseous fuels
US3711243A (en) * 1971-02-02 1973-01-16 Zink Co John Regenerative tile for fuel burner
US3718102A (en) * 1971-10-29 1973-02-27 Midland Ross Corp Combustion apparatus
JPS49835A (en) * 1972-03-09 1974-01-07
US3960504A (en) * 1973-09-17 1976-06-01 Griffin Research & Development, Inc. Polluted air effluent incinerating apparatus
US4044099A (en) * 1973-09-17 1977-08-23 Griffin Research & Development, Inc. Polluted air effluent incinerating method
JPS5522686B2 (en) * 1973-12-12 1980-06-18
JPS5091179A (en) * 1973-12-12 1975-07-21
US4081233A (en) * 1975-06-19 1978-03-28 Matsushita Electric Industrial Co., Ltd. Combustion device
US4045160A (en) * 1976-02-09 1977-08-30 Lee Wilson Engineering Company, Inc. Flat-flame gas burner
US4105395A (en) * 1976-11-19 1978-08-08 John Zink Company Regenerative tile structure for fuel burners
FR2416423A1 (en) * 1976-11-19 1979-08-31 Zink Co John REFRACTORY REGENERATOR FOR FLUID FUEL BURNER
US4402666A (en) * 1980-12-09 1983-09-06 John Zink Company Forced draft radiant wall fuel burner
US5029557A (en) * 1987-05-01 1991-07-09 Donlee Technologies, Inc. Cyclone combustion apparatus
WO1991015712A1 (en) * 1987-05-01 1991-10-17 Donlee Technologies, Inc. Cyclone combustion apparatus
US6036480A (en) * 1996-02-16 2000-03-14 Aos Holding Company Combustion burner for a water heater
US5873712A (en) * 1996-08-02 1999-02-23 Guerra; Romeo E. Flame arrested eductor flare stack
US6461145B1 (en) * 1999-02-25 2002-10-08 Stein Heurtey Flat flame burners
US20080227040A1 (en) * 2005-07-26 2008-09-18 Optimise, Societe A Responsabilite Limitee Method and Installation for Unsupported Lean Fuel Gas Combustion, Using a Burner and Related Burner
US20080149093A1 (en) * 2006-12-20 2008-06-26 Dae Rae Lee Heating cooking appliance and burner system thereof
US7942143B2 (en) * 2006-12-20 2011-05-17 Lg Electronics Inc. Heating cooking appliance and burner system thereof
EP3364105A1 (en) * 2017-02-16 2018-08-22 Vysoké ucení Technické v Brne Burner head for low calorific fuels

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