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Publication numberUS2933259 A
Publication typeGrant
Publication dateApr 19, 1960
Filing dateMar 3, 1958
Priority dateMar 3, 1958
Publication numberUS 2933259 A, US 2933259A, US-A-2933259, US2933259 A, US2933259A
InventorsRaskin Jean F
Original AssigneeRaskin Jean F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Nozzle head
US 2933259 A
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Description  (OCR text may contain errors)

F. J. M. RASKIN NOZZLE HEAD April 19, 1960 3 Sheets-Sheet 1 Filed March 3, 1958 NW Finn: J.H. RASKI/V deemed Ap i 1960 F. J. M. RASKIN 2,933,259

NOZZLE HEAD Filed March 3, 1958 3 Sheets-Sheet 2 a4 a5 gym-1% J n t o g o o o o o o o o o o o o o o o o a 8 o o o o o o o 0 o o 0 o o O o O fig 9 nwnvmn Franz .m RASK/IV detected April 19, 1960 F. J. M. RASKIN NOZZLE HEAD 3 Sheets-Sheet 3 Filed March 3, 1958 N UI IH Q on w 3m 3 Qgwmm Q m G sh hm mm mm mm QQ mum H00: 1!! RASKIN dreamed ,Y F6

. g 2,933,259 Patented Apr. 19, 1960 NOZZLE HEAD Application March 3, 1958, Serial No. 718,599

Claims. (Cl. 239-405) The present invention relates to a nozzle head for discharging under pressure a mixture of two or more gases, or a spray of liquid or pulverized solid.

The nozzle head in accordance with the present invention is more particularly applicable for use in burner equipment 'for atomizing a liquid fuel or for mixing a gaseous fuel with air or other combustive.

The nozzle head of the present invention can also be used to produce a spray of any liquid such as a fine water spray,-or a spray of fine solid material such as pulverized coal;

In some conventional oil spray burners, the oil is mixed with steam or air to form an atomized mixture which is discharged as a single jet of relatively large capacity. However, this mixture is very often nonhomogeneous in both the size variation of the liquid particles of the atomized liquid and also the distribution of said liquid particles in the carrier gas.

To obviate this disadvantage, it has been suggested to replace the single discharge opening of the spray plate by a plurality of smaller sized discharge openings and to associate each discharge opening with individual steam or air and oil supply tubes so that a plurality of atomized oil jets combine to form the spray issuing from the nozzle. A more homogeneous mixture results from such a noule and also the modulating capacity of the nozzle is increased; however, in such nozzles, the individual oil feeding tubes communicate with. one side only of the air or stream feeding tubes so that the spray issuing from each discharge opening is nonhomogeneous. Also, such nozzles are very difiicult to manufacture because of the necessity of correctly aligning small bores arranged in pairs and which communicate at an angle to each other. The design of an oil atomizer for an oil burner should be such that with one basic design, variations-in the size 7 and proportions of the parts of the oil atomizer will give control over the following characteristics:

(a) The quality 'of atomization, in other words, atomization from coarse to extremely fine;

(b) Theshape of the oil spray, such as a rectangular flat spray of any size, a fiat spray of fan tail shape, a conical spray of any included angle and solid or hollow;


g (0 The capacity which may be required from a single atomizer. J

' Characteristics (b) and (0) apply also to a mixer for mixing gaseous fuel with air; furthermore, such a mixer should be so designed that the enclosed volume of the.

neity of the particle size and distribution of the" atomized liquid. 'Antither important object of the present invention is the provision of a nozzle head of the character described in which the atomized or mixed jet issuing from the head is composed of a plurality of individual atomized or mixed small jets of substantially uniform concentration and homogeneity.

' Still another important object of the present invention is the provision of an atomizer of the character described which can be proportioned to obtain the desired degree of atomization.

Yet another important object of the present invention is the provision of an atomizer and/ or mixer head of the character described in which the individual jet openings may be so disposed as to provide any desired shape for the overall jet or spray.

Yet another important object of the present invention is the provision of a nozzle head of the character described in which the capacity can be varied at will by varying the number of individual jets and, within certain limits, the size of said individual jets.

Yet another important object of the present invention is the provision of a mixer of the character described which is so arranged that, when used as a gas burner, the

gas fuel is mixed with the air only in small volume chambers whereby the danger of explosive flashbacks is eliminated.

Another object of the present invention is the provision: of a nozzle head of the character described which is very simple and easy to manufacture and in which the individual bores may be formed with the optimum size and shape for utmost atomization and/or mixing efiiciency.

Yet another important object of the present invention: is the provision of a device of the character described which may be used to atomize liquids other than fuel, such-as, for atomizing-water to produce a water spray.

The foregoing and other important objects of the present invention will become more apparent during the following disclosure and by referring to the drawings in which:

Figure 1' is a longitudinal section of a first embodiment of the nozzle head in accordance with the present invention, said section being taken along line 11 of Figure 2.

Figure 2 is a front view of the embodiment of Figure 1;

Figure 3 is a partial longitudinal section of the first em- 'bodiment taken'along line 33 of Figure 2-;

"Figure 4 is a partial longitudinal section of a second embodiment;

Figure 5 is a partial longitudinal section of a third embodiment;

Figure 6 is a front view of the embodiment of Figure 5; QFigure 7 is a longitudinal section of still another embodiment of a nozzle headin accordance with the present invention;

Figure 8 is an enlarged cross-section of a modified shape of an individual nozzle;

Figure 9 is an enlarged longitudinal section of still another modified form of an individual nozzle;

Figure 10 is.,a perspective view of the sleeve-like insert used in-Figure 9; and

Figure 11 is an enlarged cross-section taken on line 11TH of Figure 9.

Referring now more particularly to the drawings in hich like reference characters indicate like elements throughout, the nozzle head, in accordance with the present invention, essentially consists of an inner and an outer plate-like element maintained in spaced relationship so as to provide a gap therebetween of substantially uniform width, said two elements being provided with a plurality of through bores arranged in axially aligned pairs, that is, the bores of one element register with an associatedbore of the other element; said elements being associated with me'ans to admit a-first fluid substance under pressure to the inlets of the through bores ,of the inner element and a second fluid substance under pressure end portion 3 to be secured to an inner pipe 4'adapted to supply a first substance under pressure, such as air, steam or gas. The frusto-conical member 1 is provided with a plurality of cylindrical throughbores 5 which are circu larly arranged about the axis of the skirt 2 and which are disposed at right-angles to the frusto-conical member 1.

' The skirt 2 is further provided with a radially outwardly projecting peripheral flange 6' which is perforated with a plurality of through bores 7. A cylindrical sleeve 8'Iis slidably fitted over the outer cylindrical surface of the flange 6 and is provided at its rear end portion with inner threads 9 to threadedly engage a nipple 10 adapted to be connected to an outer pipe (not shown) for supplying a second substance under pressure, such as a liquid or gas fuel. v I

' The forward end of the sleeve 8 forms an inwardly directed lip 11 engageable with a shoulder 12 made at the periphery of. the outer element or face plate of the nozzle head which consists of a second frusto-conical member 13. The latter has the same included angle as the first fr-usto-conical member 1. The two members 1 and 13 are maintained ata predetermined distance apart by means of a spacer sleeve 14 engageable between the flange 6 of the skirt 2 and the peripheral portion of the inner face of the-member 13. Thus a gap 15 of substantially uniform width is formed'between the two frusto-conical members 1 and 13. This gap is in communication at the periphery of the two frusto-conical members with a pressureequalizing chamber 16 surrounding the skirt 2, and said chamber 16 is -in turn in communication with the nipple 10 through the axial bores 7 made in the flange 6. 1

The second'frusto-conical member 13 is provided with alplurality of cylindrical through bores 17 respectively axially aligned with the throughbores 5 of the inner frusto conicalmember 1 and of a diameter slightly greater than said through bores 5.

said gap 15. The through bores 5 and 17 are very easily machined: they canbe made inexact alignment and,

furthermore, they can be finished to the exact required diameter because the two members 1 and 13 are detachable. Also, the skirt 2 may be made of such a length as to clear a tool inserted through the inlet end of the through bores 5'.

With the embodiment 1 of Figures 1, 2 and 3, there results a hollow substantially conically shaped flame haV? 1 However, it is ing a rather restricted included angle. possible to vary. the shape of the flame due to the simple design in accordance with the present invention.

Referring to Figure 4, the inner element 19 is in the form of a semi-spherical member which is concentric with a semi-spherical member 20 which constitutes the outer element. The members 19 and 20 are provided with a the liquid fuel pipe. The outer member Ztlismaintained in fixed relation with respect to the inner member 19 by means of the spacer sleeve 25. This embodiment will form a solid conical fire having a wider included angle than the embodiment of Figure 1. i

The ernbodimentof Figures 5 and dis designed to produce a rectangular. fiat spray which may have any width and/or thickness. In this embodiment the outer element 26 and the inner element 27 areeach in the form a of a rectangular plate of V shaped cross-section having equal included angles. The twoelements 26 and 27 are provided with ,two rows of aligned through bores 28 and 29 respectiyely. The inner element 27 has flat side walls 30 and flat end walls 30', which form an elongated rectangular chamber 31 provided at the middle thereof with a circular nipple 3 2 in threaded engagement with a As shown in Figure 3, the inner and outer frusto-conical members land 13 are maintained by means of dowel pins 18, in a fixed angular relationship and against rotation with-respect to each'other, so that the through bores 5 and 17 are always maintained in exactaxial alignment.

'When the nozzle head, in accordance with the first embodiment, is used to atomize a liquid fuel, steam air of the'fuel into the pressure-equalizing anti-chamber 36;

which communicates with the gap 37 between the inner and .out erlelements 27 and26. The anti-chamber 36 exor any other suitable gas such as n'atural gas atthe con-.

ventional pressure is supplied by :the inner pipe 4, while the fuel oil is supplied by the outer pipe connected to nipple 10. The steamer gas under pressure passes at high velocity through the aligned bores 5 and 17, while the liquid fuel normally under pressure although said pressure may be very s'mall or nonexistant for small capacity atomizers completely fllls the gap 15 and is drawn by and mixes' with the steam or air jet from around the entire periphery of said jet for each individual pair of through A r a mixing tube wherein the liquid would b'e supplied from one. side only. The through bore 17 has a slightly larger diameter than the through bore 5 toprevent the production of, a, counter pressure in the gap 15 to produce a. Yenturi effect creating suction of the fuel from tends around the entire periphery; of the inner element 27.. A spacer member 38 of rectangular shape abuts 6s Theouter element '26 is removably retained in position by meaus ofthe retainin'g member 39.. having the form of a rectangular box withoutbottom and top and having aninward lip 40 at its forward end engageable with. a houlder 41' extending around the entire periphery of the outer element 26. The retaining member 39 is provided at thencentre thereof with opposite top and. bottom seg-' mental flanges'42 adapted to be removablysecuredbymeans of bolts 43 to the flange 44' of a flanged collar 45 which is threadedly connected toa liquid supply outer pipe 46 decreased. 1

V I'thasbeen found that very wide nozzles can be manufactured in accordance withthe present invention, and

stiILtheQfueland the air or steam will be supplied to the.

individual'nozzles at a substantially uniform pressure,"

therebyobtaining individual jets of combustible mixture of;{un;ifiorn1 comp05iti.0n and of uniform atomization.

Thus a long single row of holes 28 may be provided to produce a thin, rectangular, even spray of any width required, which is highly desirable for some installations such as an open hearth furnace, or by providing more rows of holes, it is possible to have a thick rectangular spray. Obviously, the capacity of the entire spray can be varied by varying the number of component jets.

Figure 7 shows still another embodiment of the nozzle head, in accordance with the present invention, in which both the inner and outer elements are detachable for ease of machining the through bores thereof.

As shown in Figure 7, a sleeve 47 is threadedly connected at its inlet end 48 to an inner pipe 49 for the supply of a first substance, such as steam or air under pressure. The sleeve 47 is part of and forms an inner annular projection at the forward end of an elongated nipple 50 which spacedly surrounds the inner pipe 49 and is in threaded engagement at its inlet end 51 with an outer pipe for the supply under pressure of the second substance such as liquid fuel. 1

The nipple 50 has at its forward end an externally threaded portion of reduced outside diameter, as shown at 53, which is in threaded engagement with a sleeve-like retaining member 54 provided at its forward end with an inwardly directed lip 55 engageable with a shoulder 56 of the outer element 57 of the nozzle head.

The inner element 58 of the nozzle head is detachable and is sandwiched between the outer element 57 and the sleeve 47. Thus, the two elements 57 and 58 are maintained in secured position by means of the retaining member.

The inner element 58 is provided at the periphery of its outer face with an outwardly projecting rib 59 engageable with the peripheral portion of the inner face of the outer element 57 so as to maintain between elements 57 and 58, a cap 60 ofrequired width. Radially inwardly of the rib 59, there is provided a peripheral groove 61 serving as means for distributing the oil within the gap 60; the groove 61 is continuous around the periphery of the element 58 and is in communication with a groove 62 at theinner face of the element 58 by means of a plurality of passages or holes 63.

The groove 62*is opposite a groove 64 made in the front face of the sleeve 47. The grooves 62 and 64 form a pressure equalizing chamber around the element 58 for the oil supplied thereto by means of axial passages 65 made in the sleeve 47 and communicating with the annularchamber 66 defined between the inner tube 49 and the nipple; 5 0. l j I Theoutenand inner elements57 and 58 are provided with pairs of axially aligned through bores 67 and 68 respectively, both having a cylindrical shape, and the outer bores 67 having a slightly greater diameter than the inner bores 68.

When the nozzle arrangement, in accordance with the present invention, is used as a gas burner, the combustion air may be supplied through the central pipe and the gas through the outer pipe or vice versa. The individual jets will thoroughly mix the two different gases for combustion to any desired proportions, so as to produce the exact type and shape of flame required. Because the combustible mixture is formed in individual, small capacity mixing tubes, which are bores of the outer element, there is at no time any large volume of combustible mixture which, in conventional gas burners, often causes accidents when a flashback occurs. Also, it has been found that the individual jet arrangements, in accordance with the present invention, produce very eflicient mixing of the combustible gas and combustive air.

It is possible due to the simple design of the outer element in all the embodiments, and both the outer and inner elements in the embodiment of Figure 7, to make said elements of refractory material, thereby making it possible to have a very hot and very short flame without damaging the burner.

1 In all the embodiments described hereinabove, the component jetshave been shown as cylindrical bores, the bores of the inner element acting as jet tubes, and the bores of the outer element acting as mixing tubes. How ever, it will be noted that, due to the simple detachable construction of the inner and outer elements, the design lends itself to the economical machining of accepted forms of expanding nozzles for the most eflicient type ofjets, as well as shaping the mixing tubes to obtain the most eflicient induction of the fuel and the desired discharge characteristic of the'mixture.

The embodiment of Figure 8 shows one preferred form of an individual component jet in which the air or steam under pressure enters the jet tube 69 which has a restricted throat 70 and an expanding portion 71, while the mixing tube 72 has a throat 73 and two flaring portions 74 and 75, the flaring portion 74 having a maximum diameter greater than the maximum diameter of the jet tube 69. Thus, the liquid fuel is induced from the gap 76, as shown by the arrows, and the throat 73 produces a very thorough and uniform mixing and atomizing of the liquid fuel in the air or steam jet issuing from the jet tube69. Instead of inducing the liquid fuel or the gas through a Venturi effect it is also possible, in accordance with the present invention and referring to Figures 9 to 11 inclusive, to feed the fuel as jets with kinetic energy. This is achieved by inserting in the jet tube or through bore 77 of cylindrical shape and provided with an enlarged portion 78 at its outlet portion, a cylindrical insert 79 extending across the gap 80 and abutting against the inner face of the outer element 81 and having an inside diameterslightly less than the diameter of the mixing tube 82. r

The insert 79 is provided with a plurality of square notches 83 directed tangentially to the cylindrical inner surface of said insert 79; thus the liquid fuel enters the aligned through bores or tubes tangentially and at high velocity so as to effect a whirling action on the fuel. The combination of the kinetic energy of fuel and the kinetic energy of the atomizing gaseous substance, plus the whirling action of the fuel, results in a very thorough mixing and atomizing of the fuel in the gaseous substance.

The notches 83 may be semi-circular or square in crosssection so as to have in practice, as far as possible, a profile of which the ratio of the circumference to the surface is a minimum to provide for minimum clogging of the opening by liquid fuel as it has been found that liquid fuel normally tends to deposit sediments on the edge of an orifice.

From the foregoing, it will be clear-that the atomizer and/ or mixer nozzle, in accordance with the present invention, clearly fulfills the requirements noted above: its basic design can be adapted for varying the quality of atomization, varying the shape of the atomized oil spray and varying the capacity of the oil spray.

As to the shape of the spray, several embodiments of nozzles, in accordance with the present invention have already been described.

The capacity, of the spray may be varied by varying the number of component jets.

The quality of atomization may be varied by changing any one or any combination of the following three variables:

(a) The diameters of the jets, smaller diameter jets producing fine atomization and larger diameter jets producing coarser atomization;

(b) The width of the gap between the outer and inner elements, a narrower gap producing finer atomization and a wider gap producing coarser atomization;

(c) The difference of diameters of the jet and mixing tubes.

From the foregoing it will also be seen that absolute uniformity of all component sprays is insured because all the jet tubes are similar, all the mixing tubes are similar,

.7 all the fuel entry rings are similar and the atemizing pressure and distribution mall the jets-is-uniformkahd the fuel oil'supply toiall the jets is also'unitormwith respect to pressure and distribution, thus a very high degree of homogeneity of the spray is obtained.

Also the nozzle has an extensive turn-down ratio or modulating range while still maintaining substantially complete combustion. The nozzle head, in accordance with the present inven tion, can easily be taken apart for cleaning.

Obviously, the head in accordance with the ,present invention, may be used to vapourize other liquids than fuel oil and may be found useful, for instance, for vapourizing or atomizing water to produce a fine spray. Such a water spray could be used, for example,for firefighting as it is now known that a water spray or fine water droplets is much more efiicient for fighting fires than a water jet. 7

The nozzle head of the present invention may-also be used to produce a jet'of fine solids such as pulverized coal. t T f In actual tests carried with the nozzle head of Fig 1 it has been found a very good atomization of No. 6 (bunker C) oilwas obtained with a'gap-of about between the two plate-like elements. When the burner was operated on a 'stop and start jetsjsleeve-like members extending across said gapin basis it was found desirable to purge at each stop the oil remaining in the nozzlehead by providing a relief valve, not shown, on the inner tube 4 toadmit purging air or steam into the outer pipe 10 in order to prevent carbonization within the gap 15. t

While preferred embodiments in accordance with the present invention have been illustrated and described,

it is understood that various modifications may be resorted to without departing from the spirit'and scope of the appended claims. 1

1. A nozzle head comprising aninner and an-outer plate-like element'spaced'from each other to define a continuous gap therebetween extending over amajorportion of said elements, saidouter element constituting the face plate of said nozzle head, said elements'having'a plurality of through bores, each through bore of one element being axially aligned with a through bore of the other element to'd'efine pairs of through bores, means to admit a first'fluid substance under pressure to themlets of the through bores of said inner element and 'means to admit a second fluid'under pressure to said gap whereby saidfirst'substance will be discharged as jets passing through said pair of bores and said second substance will enter said jets through said gap to be mixedwith said alignment withthe bores of each pairof bores to establish communication between said bores across said gap; said sleeve-like members having apertures made -therlethrough to communicate-the interior of said sleeves with 'said' p- I Y a =2. A nozzle head as claimed in claim 1, wherein said bores and said sleeve-like members have a cylindrical shape. I

3. A nozzle head asclaimed in claim 2, wherein said apertures open in the interior of said sleeve members tangentially to the inner surface of the latter.-

4. A nozzle head-for burners andthe like comprising an inner casing having an inlet for admission of a; first fluid under pressure and having a wall thereof -perforated with a plurality of'bores through which said}fluid escapes in the form of jets, an outer casing having-an inlet opening for admission of a second fluid under pres sure and having a wall thereof disposed in spaced rela-" tionship with the wall of said inner casing to provide a gap between said-walls, thewall of said outercasing-having a plurality of boresyeach axially aligned with abore of the wall of said innercasing, whereby said second fluid enters said outer casing, fills said gap and contacts and mixes with said jets from points around theiperiphery of the same as said jets escape from the bores of the wall of the'inner casing, the mixing continuing as said jets pass through the bores of the wall of said outer.

casing to issue therefrom, said bores'having a cylindrical shape and the bores in the wall of said outer casing having a slightly greater'diarneter than the diameter of the bores of the wall of the inner casing; the bores in the wall of said inner casing having enlarged end portions adjacent said gap and further including sleeve-like members inserted in said enlarged endportions and projecting across said gap to join with the inlet ends of the bores of the outer casing and each sleeve-like member further having notches made in the end thereofdisposed within said gap to'establishcommunication between the interior of said sleeve-like memberand said gap.

SPA nozzlelhead asclaimed in claim 4, wherein said":

notches have a square cross section and open with saidi sleeve-like members tangentially to the inner surface Simonin Mar, 2, 1937

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1554788 *Jun 24, 1924Sep 22, 1925Corwin Howard RussellVacuum fluid burner
US1837339 *Mar 1, 1930Dec 22, 1931Schlick GustavAtomizing nozzle
US1952236 *May 15, 1931Mar 27, 1934Walter H ClawsonFuel oil burner
US2072281 *Sep 23, 1936Mar 2, 1937Des Procedes Simonin Soc EtMixing and atomizing apparatus for hydrocarbons and other fluid materials
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3326538 *Aug 12, 1964Jun 20, 1967Marvin D MerrittVapor generator
US3446439 *Feb 20, 1967May 27, 1969Babcock & Wilcox LtdLiquid fuel burners
US3493181 *Mar 18, 1968Feb 3, 1970Zink Co JohnDevice for converting liquid fuel to micron size droplets
US3737283 *Nov 26, 1971Jun 5, 1973Fuller CoFluidized solids reactor
US3759450 *Mar 16, 1972Sep 18, 1973Ransburg Electro Coating CorpFluid mixing and spraying apparatus
US3763650 *Jul 26, 1971Oct 9, 1973Westinghouse Electric CorpGas turbine temperature profiling structure
US3913845 *Oct 25, 1973Oct 21, 1975Ishikawajima Harima Heavy IndMultihole fuel injection nozzle
US3917443 *Oct 7, 1974Nov 4, 1975Adams VernonGaseous fuel burner
US3995811 *May 22, 1975Dec 7, 1976Eutectic CorporationNozzle for depositing metal powder by spraying
US4141505 *Jun 7, 1976Feb 27, 1979Reich Richard BHeavy fuel oil nozzle
US4194874 *Jan 3, 1978Mar 25, 1980Coen CompanyVariable flame shape oil burner
US4249885 *Jul 20, 1978Feb 10, 1981Vapor CorporationHeavy fuel oil nozzle
US4273076 *Dec 28, 1978Jun 16, 1981Westinghouse Electric Corp.Steam generator sludge lancing apparatus
US4276856 *Dec 28, 1978Jul 7, 1981Westinghouse Electric Corp.Steam generator sludge lancing method
US4278045 *Jan 25, 1979Jul 14, 1981Owens-Corning Fiberglas CorporationDispensing foamable material
US4303386 *May 18, 1979Dec 1, 1981Coen Company, Inc.Parallel flow burner
US4311277 *Jun 20, 1979Jan 19, 1982Lucas Industries LimitedFuel injector
US4337898 *Jul 15, 1980Jul 6, 1982Babcock Product Engineering Ltd.Burner heads
US4356970 *Mar 20, 1980Nov 2, 1982Coen Company, Inc.Energy saving fuel oil atomizer
US4372494 *Feb 19, 1981Feb 8, 1983Carbonisation Entreprise Et Ceramique (C.E.C.)Spray nozzle
US4383649 *Jul 18, 1980May 17, 1983John Zink CompanyFuel oil atomizer
US4439401 *Mar 19, 1982Mar 27, 1984Manfred VollProcess and apparatus for the production of carbon black
US4491271 *Dec 20, 1983Jan 1, 1985Shell Oil CompanyProcess and apparatus for mixing fluids
US4518120 *May 16, 1984May 21, 1985Shell Oil CompanyNon-fouling oil atomization tip
US4601428 *Dec 4, 1984Jul 22, 1986Tokyo Sangyo Kabushiki KaishaBurner tip
US4893752 *May 6, 1988Jan 16, 1990Turbotak Inc.For the formation of an atomized spray
US5025989 *Aug 14, 1989Jun 25, 1991Turbotak Inc.Spray nozzle design
US5147199 *Nov 8, 1990Sep 15, 1992Edmond PerthuisDouble fuel jet burner and method for its implementation
US5158443 *Sep 20, 1990Oct 27, 1992Nippon Oil Co., Ltd.Fuel spraying method in liquid fuel combustion burner, and liquid fuel combustion burner
US5170942 *Aug 30, 1991Dec 15, 1992Turbotak Technologies Inc.Spray nozzle design
US5176324 *Sep 20, 1990Jan 5, 1993Nippon Oil Co., Ltd.Fuel spraying method in liquid fuel combustion burner, and liquid fuel combustion burner
US5452857 *May 25, 1993Sep 26, 1995Nippon Oil Company LimitedBurner for burning liquid fuel
US5474235 *Mar 10, 1995Dec 12, 1995Wheelabrator Technologies, Inc.Spray nozzle insert and method for reducing wear in spray nozzles
US5603453 *Dec 30, 1994Feb 18, 1997Lab S.A.Dual fluid spray nozzle
US5839272 *Dec 21, 1994Nov 24, 1998Moog Inc.Dual concentric poppet valves for maintaining substantially constant the ratio of two fluid flows over an operating range of valve opening
US6029746 *Jul 22, 1997Feb 29, 2000Vortech, Inc.Self-excited jet stimulation tool for cleaning and stimulating wells
US6199566 *Apr 29, 1999Mar 13, 2001Michael J GazewoodApparatus for jetting a fluid
US6375757 *Jan 18, 2001Apr 23, 2002Thru-Tubing Technology, Inc.Method for jetting a fluid
US6470980Oct 3, 2000Oct 29, 2002Rex A. DoddSelf-excited drill bit sub
US6622944 *Apr 20, 2001Sep 23, 2003Combustion Components Associates, Inc.Fuel oil atomizer and method for discharging atomized fuel oil
US6681498 *Apr 3, 2002Jan 27, 2004Novartis AgBlast nozzle
US6764030Jan 2, 2002Jul 20, 2004Diamond Power International, Inc.Sootblower nozzle assembly with an improved downstream nozzle
US6892959Jan 22, 2002May 17, 2005Dl Technology LlcSystem and method for control of fluid dispense pump
US6957783 *Jan 4, 2002Oct 25, 2005Dl Technology LlcDispense tip with vented outlets
US6983867Apr 28, 2003Jan 10, 2006Dl Technology LlcFluid dispense pump with drip prevention mechanism and method for controlling same
US7000853Nov 15, 2004Feb 21, 2006Dl Technology, LlcSystem and method for control of fluid dispense pump
US7007865Aug 14, 2003Mar 7, 2006Rex A. DoddSelf-adjusting nozzle
US7021562Oct 14, 2003Apr 4, 2006Parker-Hannifin Corp.Macrolaminate direct injection nozzle
US7028926Mar 24, 2004Apr 18, 2006Diamond Power International, Inc.Sootblower nozzle assembly with nozzles having different geometries
US7207498Feb 23, 2005Apr 24, 2007Dl Technology, LlcFluid dispense tips
US7331482Mar 26, 2004Feb 19, 2008Dl Technology, LlcDispense pump with heated pump housing and heated material reservoir
US7448857Jan 18, 2005Nov 11, 2008Dl Technology, LlcFluid pump and cartridge
US7611663 *Oct 14, 2004Nov 3, 2009Andritz Maerz GmbhIndustrial furnace and associated jet element
US7694857Jan 9, 2006Apr 13, 2010Dl Technology, LlcFluid dispense pump with drip prevention mechanism and method for controlling same
US7744022Apr 10, 2007Jun 29, 2010Dl Technology, LlcFluid dispense tips
US7762480Jan 25, 2007Jul 27, 2010DL Technology, LLC.Dispense tip with vented outlets
US7891191 *Aug 24, 2005Feb 22, 2011Hitachi, Ltd.Combustor, gas turbine combustor, and air supply method for same
US7900637 *Jun 24, 2002Mar 8, 2011Niconovum AbDevice and method for the administration of a substance
US7905945Oct 3, 2008Mar 15, 2011DL Technology, LLC.Fluid dispensing system having vacuum unit and method of drawing a vacuum in a fluid dispensing system
US7992805 *Nov 12, 2004Aug 9, 2011Shell Oil CompanyFeed nozzle assembly
US8047003Sep 28, 2010Nov 1, 2011Hitachi, Ltd.Combustor, gas turbine combustor, and air supply method for same
US8056833Jun 24, 2010Nov 15, 2011Dl Technology, LlcDispense tip with vented outlets
US8197582Feb 8, 2011Jun 12, 2012DL Technology, LLC.Fluid dispensing system having vacuum unit
US8220669Mar 2, 2010Jul 17, 2012Dl Technology, LlcFluid dispense pump with drip prevention mechanism and method for controlling same
US8480015May 27, 2010Jul 9, 2013Dl Technology, LlcFluid dispense tips
US8549842 *Dec 1, 2009Oct 8, 2013GM Global Technology Operations LLCAir assisted injector, and injection system and exhaust treatment system incorporating the same
US8690084Aug 10, 2005Apr 8, 2014Dl Technology LlcFluid dispense tips
US8701946Jun 27, 2012Apr 22, 2014Dl Technology, LlcFluid dispense pump with drip prevention mechanism and method for controlling same
US8707559Feb 20, 2008Apr 29, 2014Dl Technology, LlcMaterial dispense tips and methods for manufacturing the same
US20110126529 *Dec 1, 2009Jun 2, 2011Gm Global Technology Operations, Inc.Air assisted injector, and injection system and exhaust treatment system incorporating the same
US20120318891 *Jun 14, 2011Dec 20, 2012Wu-Chiao ChouSiphon nozzle for air blow gun
USRE34586 *Jul 12, 1991Apr 19, 1994Turbotak Inc.Spray nozzle design
USRE40539Sep 23, 2004Oct 14, 2008Dl Technology LlcFluid pump and cartridge
EP0058437A1 *Jan 13, 1982Aug 25, 1982Shell Internationale Research Maatschappij B.V.Internal mix atomizer and process for the atomizing of a heavy liquid
WO2000066285A1 *Apr 18, 2000Nov 9, 2000Thru Tubing Technology IncVenturi wash apparatus and method
WO2004013446A2 *Aug 1, 2002Feb 12, 2004Rex A DoddSelf-excited drill bit sub
U.S. Classification239/405, 239/559, 239/554, 239/426, 239/422, 239/423, 239/493, 239/472, 239/419, 239/431, 239/549, 239/567
International ClassificationB05B7/08, F23D14/48, F23D11/10, F23D14/58, B05B7/04, F23D11/12, B05B7/02, B05B7/12
Cooperative ClassificationF23D11/105, F23D11/12, F23D14/58, B05B7/08, B05B7/12, B05B7/04
European ClassificationB05B7/08, F23D14/58, F23D11/10A3, F23D11/12, B05B7/12, B05B7/04