US3923248A - Liquid fuel atomizer - Google Patents

Liquid fuel atomizer Download PDF

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Publication number
US3923248A
US3923248A US51809474A US3923248A US 3923248 A US3923248 A US 3923248A US 51809474 A US51809474 A US 51809474A US 3923248 A US3923248 A US 3923248A
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US
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Grant
Patent type
Prior art keywords
deflector
deflector member
atomizer
gas
annular
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
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Inventor
Alan Cresswell
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.)
KOPPEHELE H PAUL 5870 FAIRHAM ROAD HAMILTON
NORTH AMERICAN DECAFIX
Original Assignee
DECAFIX Ltd
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Filing date
Publication date
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D11/00Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10Burners 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
    • F23D11/12Burners 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 characterised by the shape or arrangement of the outlets from the nozzle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/265Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle

Abstract

An atomizer for atomizing liquid fuels for combustion consisting of an outer, annular liquid nozzle chamber which converges towards an annular outlet therefrom and a coaxial, inner gas nozzle chamber which converges towards an annular outlet therefrom. A rigid annular deflector member is positioned coaxially with respect to the outlet openings and extends at least from the outlet openings to a position downstream of such openings. The deflector member also has a gas bleed duct leading to a further deflector arranged so as to deflect a gas stream across the outer end face of the deflector member.

Description

Cresswell Dec. 2,1975

LIQUID FUEL ATOMIZER v [75] Inventor: Alan Cresswell, Rochester, England f' bxamlrfer Roben Asslstant E.rammerAndres Kashmkow Asslgneei Decafix Limited, Rochester. Attorney, Agent, or FirmLowe, King & Price England [22] Filed: Oct. 25, 1974 21] Appl. No.: 518,094 ABSTRACT An atomizer for atomizing liquid fuels for combustion [30] Forelgn Apphcat'on Pnonty Data consisting of an outer, annular liquid nozzle chamber Oct. 26, 1973 nited K gd m 49 /7 which converges towards .an annular outlet therefrom and a coaxial, inner gas nozzle chamber which conl 239/4193; 239/424; verges towards an annular outlet therefrom. A rigid 7 239/4 239/500 annular deflector member is positioned coaxially with H IL (1 B05B 15/02; 30513 BOSB 1/2 respect to the outlet openings and extends at least Field Of Search from the outlet openings to a position downstream of 239/424, 6, 432, 433, 500, 461 such openings. The deflector member also has a gas bleed duct leading to a further deflector arranged so References Cited as to deflect a gas stream across the outer end face of UNITED STATES PATENTS the eflector member.

3,093,314 6/1963 Meyer 239/433 X FOREIGN P-ATENTS OR APPLICATIONS 5 1 Draw 1,020,942 2/1953 France 239/422 Ml rm \llllllll' U.S. Patent Dec. 2, 1975 3,923,248

LIQUID FUEL ATOMIZER The invention relates to atomizer, more particularly for atomizing liquid fuels for combustion.

According to one aspect of the invention an atomizer consists solely of an outer, annular liquid nozzle chamber which converges towards an annular outlet therefrom, a coaxial, inner gas nozzle chamber which converges towards an annular outlet therefrom and a rigid annular deflector member positioned coaxially with respect to said outlet openings and extending at least from said outlet openings to a point downstream of said outlet openings, the deflector member also having a gas bleed duct leading to a further deflector arranged, in use, to deflect a gas stream across the outer end face of the deflector member.

Preferably the gas bleed duct and arrangement of further deflectors are such as to provide said gas stream at approximately one third of the operating gas pressure of the atomizer.

The diameter of the further deflector may be approximately one half the diameter of the outer end face of the deflector member.

The further deflector may comprise an insert which is mounted in a central aperture in the deflector member and may be spaced between 0.004 and 0.007 inches from the outer end face of the deflector member.

The foregoing and further features of the invention may be more readily understood from the following description of a preferred embodiment thereof, by way of example, with reference to the accompanying drawing, which is a perspective view, part cut away, of an atomizer.

Referring now to the drawing there is shown an atom izer which comprises a distributor member 11 formed with an outer circumferential ring of axial liquid feed passages 12 and an inner circumferential ring of axial gas feed passages 13. An inner surface 14 of member 11 is screw threaded to receive a coaxial feed pipe (not shown) to supply gas to passages 13 and liquid to passages 12 with ring seals 15 and 16 interposed therebetween.

The gas feed passages 13 lead into a convergent annular nozzle chamber 17 which is defined by a frustoconical divergent surface 18a of a deflector member 18 which is screw threaded into a central aperture in the distributor member 11 at the end remote from the feed thereto.

The liquid feed passages 12 lead into a convergent annular nozzle chamber 19 formed by a cylindrical extension lla and the inner frusto-conical convergent surface 200 of an annular member 20 which is screw threadedly engaged with the outer surface of member 11.

A further deflector 21 is screw threadedly engaged in a central aperture in deflector member 18 so as to have a central axial passage 22 in registry with a central axial through passage 23 of deflector member 18. The further deflector 21 is also formed with radial metering passages 24 leading from passage 22 to an annular space 25 between members 18 and 21. The inner surface of the outer portion of further deflector 21 is arranged to be spaced from the outer surface of deflector member 18 by between 0.004 and 0.007 inches. The diameter of the outer portion of further deflector 21 is arranged to be approximately one half the diameter of the outer surface of deflector member 18.

In operation compressed gas is fed through feed passages 13 to chamber 17 where it is emitted at sonic velocity to flow along the outer surface of deflector member 18. As the pressure of the gas decreases along deflector member 18 its velocity increases to supersonic. When the gas approaches the curved portion of deflector member 18 the gas pressure increases and the velocity decreases so producing shock waves. Liquid to be atomized is fed through passages 12 to chamber 19 and then is emitted as a film into the gas being emitted from chamber 17. The liquid film is accelerated by the gas and maintained out of contact with deflector member 18 by the gas so effectively forming a divergent nozzle between deflector member 18 and the liquid film. The acceleration of the liquid film reduces its thickness and causes shearing. The pressure fluctuations at the culmination of the supersonic velocities reached by the gas which produce the shock waves cause vibrations of the liquid layerand further shearing and break up occurs in a plane normal to the horizontal shearing.

Gas is also fed through passages 23, 22 and 24 respectively into annular space 25 and thence between member 21 and 18 to provide a continuous gas stream across the face of deflector member 18. The size of metering passages 24 and the location of member 21 are arranged to be such that the gas pressure of the stream is approximately one third of the operating gas pressure of the atomizer.

This gas stream applied across the face of deflector member 18 forms no part of the atomization process but prevents build up of carbon or other deposits on the face of deflector member 18 when the atomizer is being used in a fuel firing operation. Without the provision of the further delfector 21 the deposits could build up to project beyond the periphery of member 18 and impair the operating efficiency thereof.

I claim:

1. An atomizer comprising an outer, annular liquid nozzle chamber which converges towards an annular outlet therefrom, a coaxial, inner gas nozzle chamber which converges towards an annular outlet therefrom, a rigid annular deflector member positioned coaxially with respect to said outlet openings and extending at least from said outlet openings to a point downstream of said outlet openings, a further deflector arranged spaced apart from and coplanar with the outer end surface of the deflector member and a gas bleed duct formed in the deflector member so as to lead from a gas supply duct to the space between the deflector member and further deflector member.

2. An atomizer as claimed in claim 1 wherein the gas bleed duct and arrangement of further deflector are such as to provide said gas stream at approximately one third of the operating gas pressure of the atomizer.

3. An atomizer as claimed in claim 1 wherein the diameter of the further deflector is approximately one half of the diameter of the outer end face of the deflector member.

4. An atomizer as claimed in claim 1 wherein the further deflector comprises an insert which is mounted in a central aperture in the deflector member.

5. An atomizer as claimed in claim 1 wherein the further deflector is spaced between 0.004 and 0.007 inches from the outer end face of the deflector member.

Claims (5)

1. An atomizer comprising an outer, annular liquid nozzle chamber which converges towards an annular outlet therefrom, a coaxial, inner gas nozzle chamber which converges towards an annular outlet therefrom, a rigid annular deflector member positioned coaxially with respect to said outlet openings and extending at least from said outlet openings to a point downstream of said outlet openings, a further deflector arranged spaced apart from and coplanar with the outer end surface of the deflector member and a gas bleed duct formed in the deflector member so as to lead from a gas supply duct to the space between the deflector member and further deflector member.
2. An atomizer as claimed in claim 1 wherein the gas bleed duct and arrangement of further deflector are such as to provide said gas stream at approximately one third of the operating gas pressure of the atomizer.
3. An atomizer as claimed in claim 1 wherein the diameter of the further deflector is approximately one half of the diameter of the outer end face of the deflector member.
4. An atomizer as claimed in claim 1 wherein the further deflector comprises an insert which is mounted in a central aperture in the deflector member.
5. An atomizer as claimed in claim 1 wherein the further deflector is spaced between 0.004 and 0.007 inches from the outer end face of the deflector member.
US3923248A 1973-10-26 1974-10-25 Liquid fuel atomizer Expired - Lifetime US3923248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4987173A GB1446225A (en) 1973-10-26 1973-10-26 Atomisers

Publications (1)

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US3923248A true US3923248A (en) 1975-12-02

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US3923248A Expired - Lifetime US3923248A (en) 1973-10-26 1974-10-25 Liquid fuel atomizer

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CA (1) CA1011375A (en)
GB (1) GB1446225A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361285A (en) * 1980-06-03 1982-11-30 Fluid Kinetics, Inc. Mixing nozzle
EP0173537A1 (en) * 1984-08-24 1986-03-05 General Foods Corporation Three-fluid atomizing nozzle and method of utilization thereof
US4592506A (en) * 1984-01-04 1986-06-03 Canadian Patents And Development Limited Wear resistant atomizing nozzle assembly
US4796813A (en) * 1986-12-15 1989-01-10 Slautterback Corporation Viscous fluid spraying apparatus having a unitary nozzle
FR2626938A1 (en) * 1988-02-06 1989-08-11 Rolls Royce Plc fuel burner for gas turbine engine
US5314117A (en) * 1991-01-18 1994-05-24 Pavljuk Vitaly G Fuel nozzle generating acoustic vibrations
EP0610853A1 (en) * 1993-02-09 1994-08-17 Elhanan Tavor Atomizer
US5513798A (en) * 1993-08-08 1996-05-07 Tavor; Elhanan Atomizer
WO2002002932A1 (en) * 2000-06-30 2002-01-10 Orbital Engine Company (Australia) Pty Limited Shockwave injector nozzle
US20060278410A1 (en) * 2005-06-13 2006-12-14 Reilly William J Fire suppression system using high velocity low pressure emitters
US20080048054A1 (en) * 2005-06-29 2008-02-28 Boehringer Ingelheim International Gmbh Method and device for atomizing liquid
US7686093B2 (en) 2006-11-06 2010-03-30 Victaulic Company Dual extinguishment fire suppression system using high velocity low pressure emitters
US20110215176A1 (en) * 2009-03-24 2011-09-08 Meyer Andrew E Fuel injector having a body with asymmetric spray-shaping surface
WO2014070097A1 (en) * 2012-11-01 2014-05-08 Skanska Sverige Ab Nozzle for distribution of a fluid
RU2574756C1 (en) * 2012-11-01 2016-02-10 Сканска Свериге Аб Directing head for fluid distribution
US9518787B2 (en) 2012-11-01 2016-12-13 Skanska Svergie Ab Thermal energy storage system comprising a combined heating and cooling machine and a method for using the thermal energy storage system
US9724302B2 (en) 2010-04-09 2017-08-08 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US9791217B2 (en) 2012-11-01 2017-10-17 Skanska Sverige Ab Energy storage arrangement having tunnels configured as an inner helix and as an outer helix
US9823026B2 (en) 2012-11-01 2017-11-21 Skanska Sverige Ab Thermal energy storage with an expansion space

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919853A (en) * 1988-01-21 1990-04-24 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for spraying liquid materials

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093314A (en) * 1960-11-16 1963-06-11 Bliss E W Co Liquid fuel atomizer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093314A (en) * 1960-11-16 1963-06-11 Bliss E W Co Liquid fuel atomizer

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361285A (en) * 1980-06-03 1982-11-30 Fluid Kinetics, Inc. Mixing nozzle
US4592506A (en) * 1984-01-04 1986-06-03 Canadian Patents And Development Limited Wear resistant atomizing nozzle assembly
EP0173537A1 (en) * 1984-08-24 1986-03-05 General Foods Corporation Three-fluid atomizing nozzle and method of utilization thereof
US4610760A (en) * 1984-08-24 1986-09-09 General Foods Corporation Three-fluid atomizing nozzle and method of utilization thereof
US4796813A (en) * 1986-12-15 1989-01-10 Slautterback Corporation Viscous fluid spraying apparatus having a unitary nozzle
FR2626938A1 (en) * 1988-02-06 1989-08-11 Rolls Royce Plc fuel burner for gas turbine engine
US5314117A (en) * 1991-01-18 1994-05-24 Pavljuk Vitaly G Fuel nozzle generating acoustic vibrations
EP0610853A1 (en) * 1993-02-09 1994-08-17 Elhanan Tavor Atomizer
US5513798A (en) * 1993-08-08 1996-05-07 Tavor; Elhanan Atomizer
WO2002002932A1 (en) * 2000-06-30 2002-01-10 Orbital Engine Company (Australia) Pty Limited Shockwave injector nozzle
US6978942B2 (en) 2000-06-30 2005-12-27 Orbital Engine Company (Australia) Pty Limited Shockwave injector nozzle
US7726408B2 (en) 2005-06-13 2010-06-01 Victaulic Company Fire suppression system using high velocity low pressure emitters
US20060278736A1 (en) * 2005-06-13 2006-12-14 Reilly William J High velocity low pressure emitter
US20060278410A1 (en) * 2005-06-13 2006-12-14 Reilly William J Fire suppression system using high velocity low pressure emitters
US20100193609A1 (en) * 2005-06-13 2010-08-05 Victaulic Company High Velocity Low Pressure Emitter with Deflector Having Closed End Cavity
US20100193203A1 (en) * 2005-06-13 2010-08-05 Victaulic Company Fire Suppression System Using Emitter with Closed End Cavity Deflector
US7721811B2 (en) 2005-06-13 2010-05-25 Victaulic Company High velocity low pressure emitter
US8141798B2 (en) 2005-06-13 2012-03-27 Victaulic Company High velocity low pressure emitter with deflector having closed end cavity
US8376059B2 (en) 2005-06-13 2013-02-19 Victaulic Company Fire suppression system using emitter with closed end cavity deflector
US7611072B2 (en) 2005-06-29 2009-11-03 Boehringer Ingelheim International Gmbh Method and device for atomizing liquid
US20080048054A1 (en) * 2005-06-29 2008-02-28 Boehringer Ingelheim International Gmbh Method and device for atomizing liquid
US20100181081A1 (en) * 2006-11-06 2010-07-22 Victaulic Company Gaseous and Liquid Agent Fire Suppression System Using Emitters with Closed End Cavity Deflector
US7921927B2 (en) 2006-11-06 2011-04-12 Victaulic Company Gaseous and liquid agent fire suppression system using emitters with closed end cavity deflector
US7686093B2 (en) 2006-11-06 2010-03-30 Victaulic Company Dual extinguishment fire suppression system using high velocity low pressure emitters
US20110215176A1 (en) * 2009-03-24 2011-09-08 Meyer Andrew E Fuel injector having a body with asymmetric spray-shaping surface
US8950694B2 (en) * 2009-03-24 2015-02-10 Andrew E. Meyer Fuel injector having a body with asymmetric spray-shaping surface
US9366208B2 (en) 2009-03-24 2016-06-14 Andrew E Meyer Electronically controlled fuel injector with fuel flow rate substantially independent of fuel inlet pressure
US9808424B2 (en) 2010-04-09 2017-11-07 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US9757336B2 (en) 2010-04-09 2017-09-12 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US9737482B2 (en) 2010-04-09 2017-08-22 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US9737483B2 (en) 2010-04-09 2017-08-22 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US9730892B2 (en) 2010-04-09 2017-08-15 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US9724302B2 (en) 2010-04-09 2017-08-08 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US10045941B2 (en) 2010-04-09 2018-08-14 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
US9657998B2 (en) 2012-11-01 2017-05-23 Skanska Sverige Ab Method for operating an arrangement for storing thermal energy
US9511382B2 (en) 2012-11-01 2016-12-06 Skanska Sverige Ab Nozzle for distribution of a fluid
RU2574756C1 (en) * 2012-11-01 2016-02-10 Сканска Свериге Аб Directing head for fluid distribution
US9791217B2 (en) 2012-11-01 2017-10-17 Skanska Sverige Ab Energy storage arrangement having tunnels configured as an inner helix and as an outer helix
WO2014070097A1 (en) * 2012-11-01 2014-05-08 Skanska Sverige Ab Nozzle for distribution of a fluid
US9823026B2 (en) 2012-11-01 2017-11-21 Skanska Sverige Ab Thermal energy storage with an expansion space
US9518787B2 (en) 2012-11-01 2016-12-13 Skanska Svergie Ab Thermal energy storage system comprising a combined heating and cooling machine and a method for using the thermal energy storage system

Also Published As

Publication number Publication date Type
CA1011375A1 (en) grant
GB1446225A (en) 1976-08-18 application
CA1011375A (en) 1977-05-31 grant

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Legal Events

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AS Assignment

Owner name: KOPPEHELE, H. PAUL 5870 FAIRHAM ROAD, HAMILTON, OH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DECAFIX LIMITED;REEL/FRAME:004022/0632

Effective date: 19820429

AS Assignment

Owner name: NORTH AMERICAN DECAFIX, 5870 FAIRHAM RD. HAMILTON,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PAUL, KOPPEHELE H.;REEL/FRAME:004026/0137

Effective date: 19820801