US3840183A - Burner - Google Patents

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Publication number
US3840183A
US3840183A US00332314A US33231473A US3840183A US 3840183 A US3840183 A US 3840183A US 00332314 A US00332314 A US 00332314A US 33231473 A US33231473 A US 33231473A US 3840183 A US3840183 A US 3840183A
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United States
Prior art keywords
fuel
tubular housing
mixing chamber
oil
supply conduit
Prior art date
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Expired - Lifetime
Application number
US00332314A
Inventor
S Kuribayashi
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K Seven Co Ltd
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K Seven Co Ltd
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Publication date
Priority claimed from JP47035430A external-priority patent/JPS48102323A/ja
Priority claimed from JP47058065A external-priority patent/JPS5123049B2/ja
Application filed by K Seven Co Ltd filed Critical K Seven Co Ltd
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Publication of US3840183A publication Critical patent/US3840183A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4335—Mixers with a converging-diverging cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
    • F23D11/102—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet in an internal mixing chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/38—Nozzles; Cleaning devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/05—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste oils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/04—Feeding or distributing systems using pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/08—Preparation of fuel
    • F23K5/10—Mixing with other fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/20—Preheating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/834—Mixing in several steps, e.g. successive steps

Definitions

  • a burner System includes a plurality of evenly presslm ized tanks feeding fuel oils to a radial inlet of a tubular [52] [1.8. CI 239/305, 239/318, 239/434 housing which has an axial inlet on one end for pres [51] 11.
  • prior art fuel atomizing systems there are various types, such as high pressure injection type and revolving particle type.
  • high pressure injection type and revolving particle type.
  • Prior art high pressure or revolving particle systems require complicated and expensive mechanisms.
  • Another prior art atomizing system of an air injection type is relatively simple in construction and operates satisfactorily.
  • the air injection type was heretofore intended merely for handling relatively volatile light fuel oils. Heavier fuel oils, which are highly viscous and substantially less volatile, are not easily atomized and tend to result in incomplete combustion, thus producing carbon monoxide and air pollution.
  • a great deal of unburned carbon and tar will collect in a flue of a burner system using the heavier fuel oil, thus requiring a considerable amount of time and labor for cleaning the burner system.
  • the present invention is devised for solving the above-mentioned problems of the prior art burning system.
  • a burner nozzle comprising a tubular housing including a mixing chamber for receiving pressurized air and fuel, air supply conduit means having one end connected to said tubular housing axially thereof so as to open to said mixing chamber and the other end connected to a pressurized air supply source, fuel supply conduit means having one end connected to said tubular housing in peripheral portion thereof and the other end connected to a pressurized oil supply source, and ejector means mounted within said tubular housing at one end thereof and having a truncated internal cavity for forming a thin film of fuel around said cavity and enabling said pressurized air to be directed axially of said cavity.
  • FIG. 1 is a longitudinal view showing the burner nozzle according to the present invention
  • FIG. 2 is a longitudinal section view showing a variation of the burner nozzle in FIG. I.
  • FIG. 3 is a schematic view showing a combustion system incorporating the burner nozzle in FIG. 1.
  • a burner nozzle comprising a tubular housing I forming a mixing chamber 1M with a pressurized air supply tube 8 connected axially to the mixing chamber, at one end of the tubular housing land with an oil supply tube 9 connected to the mixing chamber in the peripheral portion of the tubular housing I, together with an ejecting mouthpiece 2 mounted on the other end of the tubular housing.
  • the ejecting mouthpiece 2 is provided at its right end as shown in FIG. I with an ejecting opening 4 of dish shape, and internally with a truncated cavity 3.
  • the cavity 3 conveys from a portion adjacent to the mixing chamber IM toward the ejecting opening 4.
  • the ejecting mouthpiece 2 is encased within a sleeveS, which is connected to the tubular housing I at the right end of the housing I by means of a thimble nut 7 threaded over the sleeve 5.
  • the left hand end of the thimble nut 7 is engaged with an annular flange IF- provided on the tubular housing at the right end of the housing 1.
  • Oil injected radially into the mixing chamber 1M out of the oil supply tube 9 is mixed up with air discharged axially of the tubular housing 1, conveyedrightwardly and will be collected in a thin film 3F on the surface of the truncated cavity 3 which is formed internally in the ejecting mouthpiece 2.
  • the thin film 3F of oil is constantly moved rightwardly toward the ejecting opening 4, torn off into small particles by action of high speed air flow ejected out of the opening 4 and thereafter will float in the flowing air.
  • FIG. 2 shows a modification of the nozzle in FIG. I, wherein a venturi tube 11 is mounted concentrically within the mixing chamber 1M.
  • the venturi tube 11 has tapered passages 12 and 13 with a constricted throat portion 14 located intermediate both and is provided externally with a reduced portion 16, thereby forming a concentric cavity 16 between the tubular housing 1 and the venturi tube 11.
  • the concentric cavity 16 communicates with the oil supply tube 9, and is "connected to the constricted throat portion 14 of the venturi tube 11 by means of a radial passage 15. Therefore, the oil injectedinto the tubular housing 1 from the supply tube 9 will be directed to the constricted throat portion of the venturi tube 11 via the concentric cavity 16 and the radial passage 15.
  • the venturi tube 11 will facilitate the supply of fuel oil and enhance the mixing of oil and air.
  • FIG. 3 shows anoverall schematic view showing a whole combustion system incorporating the burner nozzle 10 as shown in FIG. 1 or FIG. 2.
  • the burner nozzle 10 is mounted on a furnace I7.
  • the air supply tube 8 connected at one end to the burner nozzle to axially thereof is connected at the other end to a pressurized air tank 18, which is in turn connected to a compressor 19.
  • the oil supply tube 9 communicating to the burner nozzle 10 in the peripheral portion therof is connected respectively to a hardly combustible oil tank 21, light oil tank 22 and additive or catalyst tank 23, all of which tanks are connected by branch pipes 24, 25 and 26 respectively to the pipe 9.
  • All three tanks 21', 22 and 23 are located substantially at the same elevation and provided respectively with a feed pump 28, 29 and 30, which will feed respectively hardly combustible oil, light oil and catalyst into the pressurized tank 21, 22 and 23 respectively from a hardly combustible oil reservoir 31, light oil reservoir 32 and catalyst reservoir 33.
  • Control switches 37, 38 and 39 are mounted respectively on the pressurized tank 21, 22 and 23, and will control the operation of the feed pump 28, 29 and 30 respectively in response to liquid level within the pressurized tank 21, 22 and 23 sensed through communication pipes 37A, 38A and 39A respectively.
  • Wires 40, 41 and 42 connect respectively the switches 37,38 and 39 to the feed pumps 28, 29 and 30.
  • the feed pumps 28, 29 and 30 are connected respectively to the pressurized tanks 21, 22 and 23 by means of supply pipes 34, 35 and 36 respectively.
  • the hardly combustible oil tank 21, the light oil tank 22 and the catalyst tank 23 are connected to a pressurized air supply pipe 27, which is communicated with a pressurized air supply source 18, through control valves 27A, 27B and 27C respectively. Therefore, a pressurized air supply pipe 27, which is communicated with a pressurized air supply source 18, through control valves 27A, 27B and 27C respectively. Therefore, a pressurized air supply pipe 27, which is communicated with a pressurized air supply source 18, through control valves 27A, 27B and 27C respectively. Therefore, a pressurized air supply pipe 27, which is communicated with a pressurized air supply source 18, through control valves 27A, 27B and 27C respectively. Therefore, a pressurized air supply pipe 27, which is communicated with a pressurized air supply source 18, through control valves 27A, 27B and 27C respectively. Therefore, a pressurized air supply pipe 27, which is communicated with a pressurized air supply source 18, through control valves 27A, 27B and 27C
  • Control valves 43, 44 and 45 are inserted respectively into the hardly combustible oil supply pipe 24, the light oil supply pipe 25 and the catalyst supply pipe 26 so as to regulate a ratio of the light oil and the catalyst to the hardly combustible oil, all of which are mixed together within the burner nozzle 10.
  • the hardly combustible oil in the pressurized tank 21 is heated beforehand by using the heating element 46 so as to enhance fluidity of the oil.
  • a valve 47 on the pressurized air line 8 is opened for ventilating the combustion chamber 50.
  • the combustion is started by feeding the light oil into the nozzle 10 by opening the valve 44 on the light oil supply line 25 after having ignition means (not shown) turned on.
  • the control valve 43 and 45 on the hardly combustible oil supply line 24 the catalyst supply line 26 will be opened so as to feed the hardly combustible oil and catalyst to the burner nozzle 10, simultaneously closing the control valve 44 on the light oil supply line 25.
  • the hardly combustible oil which is heated beforehand will be atomized when ejected out of the mouthpiece 2 and then burned.
  • the oil supplied into the burner nozzle 10 will be collected in a thin film on the inner surface of the tubular housing I and the truncated cavity 3 formed in the ejecting mouthpiece 2. And this thin film is torn off into small particles when discharged out of the mouthpiece 2 by action of high speed air flow axially of the nozzle. It is expected that the thin film of the oil will form bubbles containing air therein, similar to soap bubbles, and will be burnt completely with a sufficient supply of oxygen according to the present invention.
  • the nozzle according to the present invention is suitable for mixing up to two or more different kinds of oil at a predetermined ratio for burning purpose.
  • a burner system comprising a tubular housing forming a mixing chamber
  • air supply conduit means having one end connected to one end of the tubular housing and opening axially into the mixing chamber
  • fuel supply conduit means having one end connected to a peripheral portion of the tubular housing and opening radially into the mixing chamber
  • ejector means mounted on the other end of the tubular housing and having a truncated internal cavity converging to an opening for forming a film of fuel around the truncated internal cavity to be atomized at the opening,
  • first and second fuel tanks connected to the fuel supply conduit means
  • said first and second fuel tanks containing a light oil fuel and a heavy oil fuel respectively
  • first and second valve means connected between the fuel supply conduit means and the respective first and second fuel tanks
  • constant pressure means for supplying the same pressure to each of the first and second fuel tanks.
  • a burner system as claimed in claim 1 including a third tank connected to the fuel supply conduit means for containing a catalyst, and
  • a third valve means connected between the fuel conduit means and a third tank.
  • a burner system as claimed in claim 1 including first and second fuel reservoirs, and
  • first and second pump means connecting first and second fuel reservoirs to the respective first and second pump means, each of said pump means including liquid level means responsive to the liquid level in the respective first and second tanks.
  • a burner nozzle described in claim 1 wherein a venturi tube is provided within said mixing chamber of said tubular housing for enhancing an introduction of said fuel oil into said mixing chamber by action of pressurized air flowing therethrough.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Dispersion Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Spray-Type Burners (AREA)

Abstract

A burner system includes a plurality of evenly pressurized tanks feeding fuel oils to a radial inlet of a tubular housing which has an axial inlet on one end for pressurized air. An ejecting mouthpiece on the other end of the tubular housing has a truncated cavity for causing a thin film of fuel to flow on the converging surface of the truncated cavity to an outlet where the fuel is atomized by tearing off thin films of fuel.

Description

O United States Patent 1 [111 3,840,183 Kuribayashi Oct. 8, 1974 BURNER 1,412,767 4/1922 Barber 239/432 1 [75] Inventor: Sadatomo Kuribayashi, Tokyo, 11322333 gflggg Japan 2,667,384 1/1954 Phipps 2,943,797 7/1960 Neilson 1 Assgnee' fig g 'fi fi' Kay Seven 3,408,005 10/1968 Struble et al. 239/434 x [22] Filed: 1973 Primary ExaminerM. Henson Wood, Jr. 2 APPL 332,314 Assistant Examiner.lohn J. Love Attorney, Agent, or Firm-Anthony A. OBrien [30] Foreign Application Priority Data Apr. 8, 1972 Japan 4735430 ABSTRACT June 10, 1972 Japan 47-58065 A burner System includes a plurality of evenly presslm ized tanks feeding fuel oils to a radial inlet of a tubular [52] [1.8. CI 239/305, 239/318, 239/434 housing which has an axial inlet on one end for pres [51] 11. Cl B05b 7/30 Surized ain An ejecting mouthpiece Onthe other end [58] held M Search 239/434 of the tubular housing has a truncated cavity for caus- 239/427 4273* 305 ing a thin film of fuel to flow on the, converging surface of the truncated cavity to an outlet where the fuel [56] UNITE SE$XFF:S S$FENTS is atomized by tearing off thin films of fuel. 499,968 6/1893 Clarke 239/432 4 Claims 3 Drawing Figures BURNER The present invention relates to a burner system and more particularly to a burner system employing a nozzle for ejecting fuel oil in atomized condition.
In prior art fuel atomizing systems, there are various types, such as high pressure injection type and revolving particle type. However, such prior art high pressure or revolving particle systems require complicated and expensive mechanisms. Another prior art atomizing system of an air injection type is relatively simple in construction and operates satisfactorily. However, the air injection type was heretofore intended merely for handling relatively volatile light fuel oils. Heavier fuel oils, which are highly viscous and substantially less volatile, are not easily atomized and tend to result in incomplete combustion, thus producing carbon monoxide and air pollution. Moreover, a great deal of unburned carbon and tar will collect in a flue of a burner system using the heavier fuel oil, thus requiring a considerable amount of time and labor for cleaning the burner system. The present invention is devised for solving the above-mentioned problems of the prior art burning system.
It is an object of the present invention to provide a combustion system for burning hardly combustible or heavy relatively incombustible oil, such as waste oil or C heavy oil, which system is simple and economical to construct.
According to the present invention, there is provided a burner nozzle comprising a tubular housing including a mixing chamber for receiving pressurized air and fuel, air supply conduit means having one end connected to said tubular housing axially thereof so as to open to said mixing chamber and the other end connected to a pressurized air supply source, fuel supply conduit means having one end connected to said tubular housing in peripheral portion thereof and the other end connected to a pressurized oil supply source, and ejector means mounted within said tubular housing at one end thereof and having a truncated internal cavity for forming a thin film of fuel around said cavity and enabling said pressurized air to be directed axially of said cavity.
Now, one preferred embodiment of the burner nozzle according to the present invention will be described in detail hereinafter by way of example with reference to accompanying drawings, in which,
FIG. 1 is a longitudinal view showing the burner nozzle according to the present invention,
FIG. 2 is a longitudinal section view showing a variation of the burner nozzle in FIG. I, and
FIG. 3 is a schematic view showing a combustion system incorporating the burner nozzle in FIG. 1.
Referring to FIG. I, there is shown a burner nozzle according to the present invention comprising a tubular housing I forming a mixing chamber 1M with a pressurized air supply tube 8 connected axially to the mixing chamber, at one end of the tubular housing land with an oil supply tube 9 connected to the mixing chamber in the peripheral portion of the tubular housing I, together with an ejecting mouthpiece 2 mounted on the other end of the tubular housing. The ejecting mouthpiece 2 is provided at its right end as shown in FIG. I with an ejecting opening 4 of dish shape, and internally with a truncated cavity 3. The cavity 3 conveys from a portion adjacent to the mixing chamber IM toward the ejecting opening 4. The ejecting mouthpiece 2 is encased within a sleeveS, which is connected to the tubular housing I at the right end of the housing I by means of a thimble nut 7 threaded over the sleeve 5. The left hand end of the thimble nut 7 is engaged with an annular flange IF- provided on the tubular housing at the right end of the housing 1. Oil injected radially into the mixing chamber 1M out of the oil supply tube 9 is mixed up with air discharged axially of the tubular housing 1, conveyedrightwardly and will be collected in a thin film 3F on the surface of the truncated cavity 3 which is formed internally in the ejecting mouthpiece 2. The thin film 3F of oil is constantly moved rightwardly toward the ejecting opening 4, torn off into small particles by action of high speed air flow ejected out of the opening 4 and thereafter will float in the flowing air.
FIG. 2 shows a modification of the nozzle in FIG. I, wherein a venturi tube 11 is mounted concentrically within the mixing chamber 1M. The venturi tube 11 has tapered passages 12 and 13 with a constricted throat portion 14 located intermediate both and is provided externally with a reduced portion 16, thereby forming a concentric cavity 16 between the tubular housing 1 and the venturi tube 11. The concentric cavity 16 communicates with the oil supply tube 9, and is "connected to the constricted throat portion 14 of the venturi tube 11 by means of a radial passage 15. Therefore, the oil injectedinto the tubular housing 1 from the supply tube 9 will be directed to the constricted throat portion of the venturi tube 11 via the concentric cavity 16 and the radial passage 15. The venturi tube 11 will facilitate the supply of fuel oil and enhance the mixing of oil and air.
FIG. 3 shows anoverall schematic view showing a whole combustion system incorporating the burner nozzle 10 as shown in FIG. 1 or FIG. 2. The burner nozzle 10 is mounted on a furnace I7. The air supply tube 8 connected at one end to the burner nozzle to axially thereof is connected at the other end to a pressurized air tank 18, which is in turn connected to a compressor 19. The oil supply tube 9 communicating to the burner nozzle 10 in the peripheral portion therof is connected respectively to a hardly combustible oil tank 21, light oil tank 22 and additive or catalyst tank 23, all of which tanks are connected by branch pipes 24, 25 and 26 respectively to the pipe 9. All three tanks 21', 22 and 23 are located substantially at the same elevation and provided respectively with a feed pump 28, 29 and 30, which will feed respectively hardly combustible oil, light oil and catalyst into the pressurized tank 21, 22 and 23 respectively from a hardly combustible oil reservoir 31, light oil reservoir 32 and catalyst reservoir 33. Control switches 37, 38 and 39 are mounted respectively on the pressurized tank 21, 22 and 23, and will control the operation of the feed pump 28, 29 and 30 respectively in response to liquid level within the pressurized tank 21, 22 and 23 sensed through communication pipes 37A, 38A and 39A respectively. Wires 40, 41 and 42 connect respectively the switches 37,38 and 39 to the feed pumps 28, 29 and 30. The feed pumps 28, 29 and 30 are connected respectively to the pressurized tanks 21, 22 and 23 by means of supply pipes 34, 35 and 36 respectively.
The hardly combustible oil tank 21, the light oil tank 22 and the catalyst tank 23 are connected to a pressurized air supply pipe 27, which is communicated with a pressurized air supply source 18, through control valves 27A, 27B and 27C respectively. Therefore, a
pressure is applied on liquid surface in each tank when the respective valve 27A, 27B, and 27C on each tank is opened, and the liquid in each tank will be forced into the burner nozzle via the supply pipe 24, 25 and 26. By 46 is denoted a heating element located within each pressurized tank 21, 22 and 23. A blower 20 for supplying secondary air into the combustion chamber 50 is mounted on the furnace 17.
Control valves 43, 44 and 45 are inserted respectively into the hardly combustible oil supply pipe 24, the light oil supply pipe 25 and the catalyst supply pipe 26 so as to regulate a ratio of the light oil and the catalyst to the hardly combustible oil, all of which are mixed together within the burner nozzle 10.
In operation, the hardly combustible oil in the pressurized tank 21 is heated beforehand by using the heating element 46 so as to enhance fluidity of the oil. A valve 47 on the pressurized air line 8 is opened for ventilating the combustion chamber 50. Then, the combustion is started by feeding the light oil into the nozzle 10 by opening the valve 44 on the light oil supply line 25 after having ignition means (not shown) turned on. After the combustion chamber has been heated at a predetermined temperature, the control valve 43 and 45 on the hardly combustible oil supply line 24 the catalyst supply line 26 will be opened so as to feed the hardly combustible oil and catalyst to the burner nozzle 10, simultaneously closing the control valve 44 on the light oil supply line 25. The hardly combustible oil which is heated beforehand will be atomized when ejected out of the mouthpiece 2 and then burned.
As described hereinabove, the oil supplied into the burner nozzle 10 will be collected in a thin film on the inner surface of the tubular housing I and the truncated cavity 3 formed in the ejecting mouthpiece 2. And this thin film is torn off into small particles when discharged out of the mouthpiece 2 by action of high speed air flow axially of the nozzle. It is expected that the thin film of the oil will form bubbles containing air therein, similar to soap bubbles, and will be burnt completely with a sufficient supply of oxygen according to the present invention. Since it is not necessary to reduce unduly the size of the ejecting opening 4 of the mouthpiece 2, sludges or foreign matters, if any, present in the hardly combustible oil, such as waste oil, will not clog up the nozzle. No carbon will collect on the v nozzle, thus eliminating the necessity of cleaning, since the combustion is carried out completely.
Since constant pressure is applied at all times on the liquid surface within each tank, desired quantities of liquid are automatically supplied to the nozzle in a predetermined ratio dependent upon regulation of control valves on the liquid supply lines. Therefore. the nozzle according to the present invention is suitable for mixing up to two or more different kinds of oil at a predetermined ratio for burning purpose.
What is claimed is:
1. A burner system comprising a tubular housing forming a mixing chamber,
air supply conduit means having one end connected to one end of the tubular housing and opening axially into the mixing chamber,
a pressurized air supply connected to the other end of the air supply conduit means,
fuel supply conduit means having one end connected to a peripheral portion of the tubular housing and opening radially into the mixing chamber,
ejector means mounted on the other end of the tubular housing and having a truncated internal cavity converging to an opening for forming a film of fuel around the truncated internal cavity to be atomized at the opening,
first and second fuel tanks connected to the fuel supply conduit means,
said first and second fuel tanks containing a light oil fuel and a heavy oil fuel respectively,
first and second valve means connected between the fuel supply conduit means and the respective first and second fuel tanks, and
constant pressure means for supplying the same pressure to each of the first and second fuel tanks.
2. A burner system as claimed in claim 1 including a third tank connected to the fuel supply conduit means for containing a catalyst, and
a third valve means connected between the fuel conduit means and a third tank.
3. A burner system as claimed in claim 1 including first and second fuel reservoirs, and
first and second pump means connecting first and second fuel reservoirs to the respective first and second pump means, each of said pump means including liquid level means responsive to the liquid level in the respective first and second tanks.
4. A burner nozzle described in claim 1, wherein a venturi tube is provided within said mixing chamber of said tubular housing for enhancing an introduction of said fuel oil into said mixing chamber by action of pressurized air flowing therethrough.

Claims (4)

1. A burner system comprising a tubular housing forming a mixing chamber, air supply conduit means having one end connected to one end of the tubular housing and opening axially into the mixing chamber, a pressurized air supply connected to the other end of the air supply conduit means, fuel supply conduit means having one end connected to a peripheral portion of the tubular housing and opening radially into the mixing chamber, ejector means mounted on the other end of the tubular housing and having a truncated internal cavity converging to an opening for forming a film of fuel around the truncated internal cavity to be atomized at the opening, first and second fuel tanks connected to the fuel supply conduit means, said first and second fuel tanks containing a light oil fuel and a heavy oil fuel respectively, first and second valve means Connected between the fuel supply conduit means and the respective first and second fuel tanks, and constant pressure means for supplying the same pressure to each of the first and second fuel tanks.
2. A burner system as claimed in claim 1 including a third tank connected to the fuel supply conduit means for containing a catalyst, and a third valve means connected between the fuel conduit means and a third tank.
3. A burner system as claimed in claim 1 including first and second fuel reservoirs, and first and second pump means connecting first and second fuel reservoirs to the respective first and second pump means, each of said pump means including liquid level means responsive to the liquid level in the respective first and second tanks.
4. A burner nozzle described in claim 1, wherein a venturi tube is provided within said mixing chamber of said tubular housing for enhancing an introduction of said fuel oil into said mixing chamber by action of pressurized air flowing therethrough.
US00332314A 1972-04-08 1973-02-14 Burner Expired - Lifetime US3840183A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP47035430A JPS48102323A (en) 1972-04-08 1972-04-08
JP47058065A JPS5123049B2 (en) 1972-06-10 1972-06-10

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FR (1) FR2180290A5 (en)
GB (1) GB1384195A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958759A (en) * 1974-01-04 1976-05-25 Seamus Gearoid Timoney Directed atomized fuel jet apparatus
US4103827A (en) * 1976-05-27 1978-08-01 Mitsubishi Precision Co., Ltd. Method of and apparatus for generating mixed and atomized fluids
US4141505A (en) * 1976-06-07 1979-02-27 Reich Richard B Heavy fuel oil nozzle
US4523340A (en) * 1982-12-20 1985-06-18 Watkins Manufacturing Co. Means providing moving water stream ejecting into spa tank
US4716604A (en) * 1985-09-18 1988-01-05 Watkins Manufacturing Co. Spa with moving jets
WO1994004873A1 (en) * 1992-08-17 1994-03-03 Energy Essentials, Inc. Compact liquid-fuel combuster
US5322222A (en) * 1992-10-05 1994-06-21 Lott W Gerald Spiral jet fluid mixer
US5694989A (en) * 1996-04-10 1997-12-09 Kupelian; Krikor Apparatus for establishing negative air pressure in a fluid-containing tank
WO2006037952A1 (en) * 2004-10-01 2006-04-13 Lgr Llc Catalyst delivery system
CN100465511C (en) * 2007-03-27 2009-03-04 薛永生 High efficiency energy-saving type oil gun
US20110006086A1 (en) * 2006-04-14 2011-01-13 Yates James M Foam soap generator
CN102908738A (en) * 2012-09-26 2013-02-06 四川威特龙消防设备有限公司 Two-phase flow superfine water mist nozzle
CN106076136A (en) * 2016-08-09 2016-11-09 刘文白 A kind of on-the-spot mixing arrangement for barged-in fill Yu solidification intensifier
US20170274398A1 (en) * 2016-03-23 2017-09-28 Alfa Laval Corporate Ab Apparatus for dispersing particles in a fluid
CN108956956A (en) * 2018-06-20 2018-12-07 南京航空航天大学 Fuel oil water distribution experimental rig integrated with moisture measurement and method
US10857507B2 (en) * 2016-03-23 2020-12-08 Alfa Laval Corporate Ab Apparatus for dispersing particles in a liquid
US11255540B2 (en) * 2019-06-20 2022-02-22 Catherine J. Chagnot Crude and waste oil burner
WO2021186156A3 (en) * 2020-03-18 2022-03-17 Teesside University A microbubble generator
WO2022268878A1 (en) * 2021-06-25 2022-12-29 Kal-Fire Beheer B.V. Hybrid domestic fireplace
WO2022268881A1 (en) * 2021-06-25 2022-12-29 Kal-Fire Beheer B.V. Burner assembly for a domestic fireplace

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958759A (en) * 1974-01-04 1976-05-25 Seamus Gearoid Timoney Directed atomized fuel jet apparatus
US4103827A (en) * 1976-05-27 1978-08-01 Mitsubishi Precision Co., Ltd. Method of and apparatus for generating mixed and atomized fluids
US4141505A (en) * 1976-06-07 1979-02-27 Reich Richard B Heavy fuel oil nozzle
US4523340A (en) * 1982-12-20 1985-06-18 Watkins Manufacturing Co. Means providing moving water stream ejecting into spa tank
US4716604A (en) * 1985-09-18 1988-01-05 Watkins Manufacturing Co. Spa with moving jets
WO1994004873A1 (en) * 1992-08-17 1994-03-03 Energy Essentials, Inc. Compact liquid-fuel combuster
US5322222A (en) * 1992-10-05 1994-06-21 Lott W Gerald Spiral jet fluid mixer
US5694989A (en) * 1996-04-10 1997-12-09 Kupelian; Krikor Apparatus for establishing negative air pressure in a fluid-containing tank
WO2006037952A1 (en) * 2004-10-01 2006-04-13 Lgr Llc Catalyst delivery system
US20080264047A1 (en) * 2004-10-01 2008-10-30 Lgr Llc Catalyst Delivery System
US20110006086A1 (en) * 2006-04-14 2011-01-13 Yates James M Foam soap generator
US9504361B2 (en) * 2006-04-14 2016-11-29 Gojo Industries, Inc. Foam soap generator
CN100465511C (en) * 2007-03-27 2009-03-04 薛永生 High efficiency energy-saving type oil gun
CN102908738A (en) * 2012-09-26 2013-02-06 四川威特龙消防设备有限公司 Two-phase flow superfine water mist nozzle
CN102908738B (en) * 2012-09-26 2014-12-17 四川威特龙消防设备有限公司 Two-phase flow superfine water mist nozzle
US20170274398A1 (en) * 2016-03-23 2017-09-28 Alfa Laval Corporate Ab Apparatus for dispersing particles in a fluid
US9950328B2 (en) * 2016-03-23 2018-04-24 Alfa Laval Corporate Ab Apparatus for dispersing particles in a fluid
US10857507B2 (en) * 2016-03-23 2020-12-08 Alfa Laval Corporate Ab Apparatus for dispersing particles in a liquid
CN106076136A (en) * 2016-08-09 2016-11-09 刘文白 A kind of on-the-spot mixing arrangement for barged-in fill Yu solidification intensifier
CN108956956A (en) * 2018-06-20 2018-12-07 南京航空航天大学 Fuel oil water distribution experimental rig integrated with moisture measurement and method
US11255540B2 (en) * 2019-06-20 2022-02-22 Catherine J. Chagnot Crude and waste oil burner
WO2021186156A3 (en) * 2020-03-18 2022-03-17 Teesside University A microbubble generator
WO2022268878A1 (en) * 2021-06-25 2022-12-29 Kal-Fire Beheer B.V. Hybrid domestic fireplace
WO2022268881A1 (en) * 2021-06-25 2022-12-29 Kal-Fire Beheer B.V. Burner assembly for a domestic fireplace
NL2028540B1 (en) * 2021-06-25 2023-01-02 Kal Fire Beheer B V Hybrid domestic fireplace
NL2028541B1 (en) * 2021-06-25 2023-01-02 Kal Fire Beheer B V Burner assembly for a domestic fireplace

Also Published As

Publication number Publication date
GB1384195A (en) 1975-02-19
FR2180290A5 (en) 1973-11-23

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