MXPA00009736A - Spray nozzle assembly - Google Patents

Abstract

A spray nozzle assembly (14) is disclosed which includes a nozzle body (22) having opposed inlet and outlet ends (24 and 26) and an elongated passage (28) extending therebetween. A fluid inlet passage (38) communicates with the elongated passage (28) through a side wall of the nozzle body (22). A member (40) is disposed within the elongated passage (28) and has a neck portion (46), a head portion (48), and an air passage (52) extending therethrough. An annular chamber (50) is defined by the elongated passage (28) and the neck portion (46). The head portion (48) cooperates with a shoulder defined within the elongated passage (28) and has an outflow slot (54) intersecting the air passage (52). Fluid is fed through the fluid inlet passage (38) into the annular chamber (50), is metered into the outflow slot (54), and therein mixed with air emanating from the air passage (52).

Description

* T MOUNTING SPRAY NOZZLE CROSS REFERENCE TO RELATED REQUESTS This application claims priority, from the provisional patent application of the States United serial number 60 / 082,000, filed on April 16, 1998, which is incorporated herein by reference.

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates generally to sprinkler nozzles and more specifically, to an improved spray nozzle assembly that produces a uniform spray pattern in the form of a fan. 2. BACKGROUND OF RELATED ART For many years the desire to control exactly the particle size of the fluid sprayed from a spray nozzle has been a stimulus for the nozzle manufacturers. Exact control of particle size often improves the quality of the entire process that uses the nozzle. For example, in the manufacture of plates, ingots, continuously molded steel bars, or the like, spray nozzles are used to cool a casting as it passes from a mold. The more exactly the coolant spray is applied to the surface of the steel, the less likely it is that there is uneven cooling of the casting. Non-uniform cooling can create internal stresses in the molten material that could result in stress fractures, and consequently, product loss. Optimum cooling of a casting can be obtained if the spray nozzles apply a uniform mantle of atomized cooling fluid to the surface of the casting such that the atomized particles evaporate easily and completely on contact. The spray nozzles must be sufficiently adjustable so that the variables found in the casting process can be adjusted. For example, the surface velocity, position and temperature of the cast part are factors that must be considered in the application of the refrigerant fluid. Purely hydraulic spray nozzle systems, where high pressure fluid is forced through small holes towards a nozzle head, were initially used in the prior art to cool foundry products. However, these systems do not sufficiently atomize the fluid. This led to excessive amounts of fluid on the surface of the casting which in turn caused imperfections in the casting and an unusable product. Air-assisted nozzles were subsequently developed and they have substantially replaced the hydraulic sprinkler systems. The air-assisted nozzles allow the distribution of the relatively fine fluid spray, thus consuming significantly less fluid and providing greater cooling per unit volume of the cooling fluid than the previous hydraulic nozzle systems. In German Patent No. 2,816,441 an example of a basic, air-assisted spray nozzle is described. This apparatus includes an air tube having a closed upper end and a nozzle tip at its bottom end defining a spray hole of air mist. An air supply tube penetrates the outer wall of the air tube adjacent the closed upper end. A fluid tube penetrates the closed upper end of the air tube and extends coaxially by a distance in the air tube. Fluid is fed into the fluid tube through the upper end thereof. Simultaneously air is fed into the tubular volume between the inner wall of the air tube and the outer wall of the fluid tube. The air and fluid are mixed in the lower portion of the air tube. A disadvantage of this prior art nozzle is that air and fluid do not mix efficiently since each leaves a respective tube in substantially parallel co-axial streams. Thus, relatively long air and fluid tubes are required to effectively mix and atomize the fluid. Consequently, the device is difficult to adapt to particular applications and ultimately results in an embarrassing and relatively expensive cooling system. In the U.S. Patent No. 4,349,156 an improvement is described with respect to this prior German device. This apparatus includes an elongated expansion chamber containing a shock plate placed parallel to the longitudinal axis of the chamber. High velocity fluid flow is introduced into the chamber at an angle perpendicular to the plate. The fluid collides with the shock plate and breaks into finely atomized particles. A high velocity air stream is directed towards the chamber along the longitudinal axis thereof and collides the fluid particles causing them to become atomized in an additional manner. The atomized particles of the fluid are transported along the length of the chamber by a high velocity air stream and exit the chamber through a hole formed at its end. This apparatus has also been found to be ineffective due to the large amount of air that must be used to achieve a drop size necessary for efficient and effective cooling required in continuous molding. A further improvement is found in U.S. Patent No. 4,511,087 ("the patent? 087"). development of spray nozzles. This spray nozzle includes a nozzle tip at one end and a liner connected to the opposite end. A liquid supply connector is mounted in a side wall of the liner with a supply orifice extending therethrough. A nozzle member extends toward the liner and includes a gas passage that traverses its entire length in a reduced diameter portion of the liner. A receiving chamber is formed between a recessed portion of the nozzle member and a portion of the enlarged diameter of the liner. The liner further includes a restrained, annular middle portion defining a liquid flow exit passage around the circumference of the nozzle. The liquid flow exit passage provides communication for fluids between the receiving chamber and the reduced diameter portion of the liner. Air and fluid are mixed in the reduced diameter portion of the liner. The apparatus described in the '087 patent has several disadvantages. First, it is difficult to manufacture these spray nozzles so that each has the same flow-out characteristics. This is due to the difficulty in manufacturing the spray nozzle with the tolerance so that each includes a liquid flow exit passage having the same cross-sectional area. Second, it is the least optimal location in which the liquid air mixture is presented, that is, in the reduced diameter portion of the liner. It has been determined that the most efficient and most complete mixing of air and fluid can be effected if it is caused to occur in a location above the radially restricted portion of the liner. A third disadvantage is the decay in the performance of the spray nozzle over time. This is mainly caused by the accumulation of minerals, such as dissolved calcium, which blocks the relatively small flow exit passage. This problem is exacerbated when, as in the described embodiment, the nozzle member includes a leading end which is in contact with the restricted middle portion of the liner and has several passage parts in a peripheral wall of the forward end of the nozzle member. Clearly there is a need in the art for a spray nozzle with improved spray efficiencies. There is also a need in the art for a spray nozzle that can be manufactured so that each spray nozzle produced has consistent spray characteristics. further, there is a need for a spray nozzle that reduces or eliminates the harmful defects that dissolved minerals will have in the performance of the nozzle during its life of operation.

BRIEF DESCRIPTION OF THE INVENTION The present invention is directed to a highly efficient spray nozzle including a nozzle body having opposite inlet and outlet ends and an elongate passage extending therebetween. A fluid inlet passage extends through a wall of the nozzle body to communicate with the elongated passage. A member is placed within the wing passage and has a neck portion, a head portion, and an air passage extending therethrough. The head portion is made in dimensions and is configured to cooperate with a complementary surface within the elongated passage. The complementary surface of the elongated passage is defined by a shoulder having a surface that contacts the head portion of the member. The shoulder surface is formed around an angle of 20 ° to 60 ° with the longitudinal axis of the elongated passage of the nozzle body. The head portion also has a flow exit groove that crosses the air passage. The groove extends to the neck portion of the member. The operation is fed to fluid through the fluid inlet passage, between the elongate passage and the neck portion, is dosed to the flow outlet slot, and mixed therein with an air emanating from the passage of air. The spray nozzle further includes a nozzle tip having an inlet end and an outlet end with a chamber extending therebetween. An extension tube is attached and provides communication for fluids between the outlet end of the nozzle body and the inlet end of the nozzle tip. A slotted pre-orifice member is positioned within the tip of the nozzle near the inlet end to regulate the flow of fluid into the chamber. The nozzle tip further includes a biasing pin that attaches to the tip of the nozzle proximate the exit end that extends at an angle perpendicular to the longitudinal axis of the nozzle tip chamber. The outlet end of the nozzle tip includes a discharge orifice formed therein whose longitudinal axis of symmetry is parallel with the axis of the diverting pin. Additional features of the spray nozzle assembly of the present invention will become more readily apparent from the following detailed description taken in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS So that those skilled in the art to which the present invention corresponds will more readily understand how to make and use the spray nozzle assembly described herein, preferred embodiments of the invention will be described in detail herein. FIG. 1 is an elevation view of a section of a continuous casting apparatus having a series of rollers supporting a casting that passes through them and illustrating a arrangement of spray nozzles to cool the casting; Figure 2 is a cross-sectional side elevational view of a spray nozzle constructed in accordance with an embodiment of the present invention; Figure 3 is a cross-sectional side elevational view, taken along line 3-3 of Figure 2, of the spray nozzle assembly of the present invention to better illustrate the geometry of a flow outlet slot in the air inlet member thereof and the position of a biasing pin in the nozzle tip therein; Figure 4 is a terminal view, taken along line 4-4 of Figure 2, with the nozzle body and the fluid inlet fitting of the assembly removed to better illustrate the lateral fluid orifices of the inlet member of air; Figure 5 is a terminal view, taken along line 5-5 of Figure 2, to better illustrate the relationship between the diverting spike and the discharge orifice of the nozzle tip assembly; and Figure 6 is a terminal view of a spray nozzle similar to Figure 5 illustrating an alternate mode nozzle tip assembly, wherein a perpendicular offset pin * is oriented to a longitudinal line of symmetry of a discharge orifice. .

DETAILED DESCRIPTION OF THE PREFERRED MODALI With reference now to the drawings in which like reference numerals identify similar structural elements of the present invention, there is illustrated in FIG. 1 a section of a melt line having a plurality of spray nozzles 10 deployed to cooling the surface of a continuous casting 12. To cool the casting 12, pressurized water and air are fed to each nozzle. sprinkler 10, mixes within the nozzle body assembly 14 of each spray nozzle, and disperses from nozzle tip assembly 16 of each spray nozzle. Preferably, in this casting line, the spray nozzles 10 are placed between pairs of support rollers 18 and provide a generally fan-shaped spray pattern across the surface of the casting 12 as the part is fed. melted between the rollers 18. To facilitate processing of the wide castings, one or more spray nozzles 10 can be placed between each pair of rollers 18, each pair of spray nozzles being positioned so that the spray patterns of the they overlap somewhat, thereby ensuring complete uniform cooling of the casting 12 as it passes through the roller train. Those skilled in the art will readily appreciate that the spray nozzles 10 can be supported between the rollers in any suitable manner. The support method may include the provision for adjusting the relative position of the nozzles with respect to the rollers and the appropriate tubing for supplying the pressurized air and water necessary to cool the casting 12. The position of each spray nozzle and the pressure The respective supply of air and water depends on several factors such as the production speed of the casting, the temperature of the casting, the particular alloy of the casting, and the temperature and pressure of the air and water supply. .

Referring now to Figure 2, a preferred embodiment of the spray nozzle 10 is illustrated. As noted above, the spray nozzle 10 includes the nozzle body assembly 14, the nozzle tip assembly 16, and a nozzle 20 extension that provides communication for fluids between the nozzle body assembly 14 and the nozzle tip assembly 16. The nozzle body assembly 14 includes a nozzle body 22 having a generally cylindrical geometry with an inlet end 24 and an opposite outlet end 26. An elongate passage 28 extends between the inlet end 24 and the outlet end 26, and an externally threaded shaft 30 is formed at the inlet end 24. An axle 32 internally threaded into the side wall of the nozzle body 22 is formed. to provide a passage crossing the elongate passage 28 at an angle, which is preferably close to 90 °. An internally threaded shaft 34 is also formed at the outlet end 26 of the nozzle antibody 22. The nozzle assembly 14 further includes a fluid inlet fitting 36 having an external thread for engaging the threaded shaft 32 of the nozzle body 22. The fluid inlet fitting 36 includes a fluid inlet passage 38 and an internally threaded portion to facilitate a connection to a supply (not shown) of pressurized fluid. The fluid inlet passage 38 tapers to a predetermined diameter to control the flow of fluid passing through it. An air inlet member 40 including a flange 42 extends in the elongate passage 28 through the inlet end 24 of the nozzle body 22. A cap nut 44 having internal threads and a through hole fully engages the threaded shaft 30, thereby holding the flange 42 to the nozzle body 22. An air inlet member 40 includes a neck portion 46 and a head portion 48. The neck portion 46 is adjacent to the fluid inlet passage 38 and forms a fluid chamber 50, annular in which fluid is fed through the fluid inlet fitting 36 from a fluid supply. An air hole 52 extends through the air inlet member 40 and tapers to a predetermined diameter to control the flow of air therethrough. Referring now to Figures 2 and 3, a flow outlet slot 54 is formed in the head portion 48, through which fluid is injected from the annular fluid chamber 50 into the mixing chamber 56. The slot 54 may have a variety of shapes without departing from the preferred embodiment of the invention. For example, the slot 54 can be of a V or U shape. These alternative forms can provide more acceptable fluid flows in particular applications. The head portion 48 also includes a tapered upper surface 58 and a tapered lower surface 60. Referring now to Figure 4 in conjunction with Figures 2 and 3, a tapered upper surface 58 is made in dimensions and configured to provide sufficient support for crossing the slot 54, thereby forming two lateral holes 62 and 64 fluid. The slot 54 is oriented perpendicular to the liquid inlet passage 38 so that the liquid is likewise injected through the lateral fluid orifices 62 and 64. In addition, the tapered upper surface 58 directs the flow of fluid immediately inward toward the upper region of the mixing chamber 56. Referring again to Figure 2, depending on the geometry of the air inlet member 40, the tapered lower surface 60 may be brought into contact with an annular shoulder 66 of the elongate passage 28, or not. It is preferable if the tapered lower surface 60 and the annular shoulder 66 are not in a contacting relationship, then the spacing formed therebetween is at a minimum dimension such that a substantial portion of the fluid flowing from the annular fluid chamber 50 passes to through the lateral fluid orifices 62 and 64. In a preferred embodiment, the tapered lower surface 60 is at an angle? with respect to the longitudinal axis of the air inlet chamber 40. In a preferred embodiment, the angle? it is approximately 20 ° to 60 °. However, it should be noted that the air inlet member 40 can be formed without the tapered lower surface 60 without departing from the utility and advantages of the present invention. For example, in the absence of the tapered lower surface 60, and consequently of the annular shoulder 66, the outer diameter of the head portion 48 can be formed to fit intimately with the inner diameter of the elongated passage 28. In this preferred embodiment, certain flow characteristics will be altered by producing a beneficial result in a particular application, while maintaining the advantages obtained by retaining the described configuration and construction of the upper region. With continuous reference to Figures 2 and 3, the spray nozzle 10 further includes an extension tube 20 which is defined by a hollow cylindrical tube having opposite externally threaded portions 68 and 70. The threaded portion 68 engages the threaded shaft 34 of the nozzle body 22. The nozzle tip assembly 16 includes a nozzle tip 72 having an internally threaded shoulder 74 which engages the threaded portion 70 of the extension tube 20. An advantage of having the various components interconnected with threaded joints is that the spray characteristics, such as the spray pattern, of the spray nozzle 10 can be easily altered by replacing the components to suit a particular need or application. For example, if it is determined that a relatively greater spray density is desired in an application, an operator may select a nozzle tip assembly 16 from a group or set of nozzle tip mounts of different dimensional characteristics that provide a particular width of reduced fan spray. Alternatively, the operator can select a fluid inlet fitting 36 from a group or set of input fittings of various dimensional characteristics to provide one having a larger diameter fluid inlet passage 38. Those skilled in the art will readily appreciate that threaded joints can alternatively be configured to be joined through adhesion, interference fit, or welding. Referring now to Figures 2, 3 and 5, the nozzle tip 72 includes a perforated hole 75 having a generally hemispherical bottom surface 76 provided therein. The perforated hole 75 includes a stepped shoulder in which a pre-orifice member 78 is press fit. The pre-orifice member 78 has a fluid passage 79 extending therethrough to provide flow control of the fluid passing to the nozzle tip 72. The pre-orifice member 78 can be removable to facilitate replacement by enlarging the diameter of the step shoulder and capturing the pre-orifice member 78 with the terminal surface of the extension tube 20. This variation in construction of the present invention adds additional flexibility to adjust the flow characteristics of the spray nozzle 10. A discharge orifice 80 penetrates the bottom wall of the nozzle tip 72 to facilitate the expulsion of the air / fluid mixture. from the nozzle 10. A biasing pin 82 is pressed towards a pair of through holes oriented perpendicular to the longitudinal axis of the perforated hole 75 and parallel to the longitudinal line of symmetry 84 of the discharge orifice 80. An alternative embodiment (Figure 6) also has a deviation pin 82 oriented perpendicular to the longitudinal axis of the perforated hole 75, however it is perpendicular to the longitudinal line of symmetry 84 of the discharge orifice 80. Deviation pin 82 is generally in the form of a round pin pin, however, it may have other cross-sectional shapes such as, for example, an oval or square cross section. The shape selected will depend in general on the application in which the nozzle is used. The deviating pin 82 creates two holes 86 and 88 of equal and laterally opposite size that directly feed the discharge orifice 80. A nozzle tip chamber 90 is formed between the pre-orifice member 78 and the diverting pin 82. Those skilled in the art will readily recognize that alterations and modifications to the discharge orifice-80 will alter the spray pattern developed. in this way. For example, reducing the angle ß (see Figure 2) will reduce the width and increase the density of the "fan" that emanates, while reducing the angle? (see Figure 1) will reduce the density of the "fan" that emanates at its edges. In addition, the discharge orifice 80 can be formed as a V-shaped or U-shaped hole that provides yet another way to alter the shape of the fan to suit a particular application. In another preferred embodiment of the present invention, the deviating pin 82 is absent from the nozzle tip 72 to provide yet another way to alter the characteristics of the fluid spray from the spray nozzle 10. In the operation, a fluid is fed under pressure to the fluid inlet fitting 36. As the fluid passes the reduced diameter of the fluid inlet passage 38, the flow velocity of the fluid increases as its flow volume is reduced. The fluid exits the reduced diameter of the fluid inlet passage 38 into the annular fluid chamber 50 and collides against the neck portion 46 of the air inlet member 40. Subsequently, the fluid is injected equally through the lateral fluid orifices 62 and 64 towards the upper region 54 of the mixing chamber 56. Simultaneously, pressurized air is injected through the reduced diameter of the air hole 52 into the upper region 54 of the mixing chamber 56. The air and fluid continue to mix in the remaining (lower) portion of the mixing chamber 56. It has been found that the inclusion of the upper region 54 provides a substantial improvement in fluid atomization? in comparison to the nozzles found in the prior art. The atomized fluid travels axially through the extension tube 20 and arrives at a uniform stream as it passes through the pre-orifice member 78 into the chamber 90 of the nozzle tip 72. The uniform current is divided into two jets of liquid of uniform flow as it passes around the offset pin 82. The surface 76 of the hemispherical bottom redirects the flow of each jet toward each other causing them to collide with each other and subsequently exits the nozzle tip 72 through the discharge orifice 80. The collision of the jet streams with one another further atomizes the fluid spray. As described above, the shape resulting from the spraying of discharged fluid is determined substantially by the shape of the nozzle orifice 80. While the spray nozzle 10 described herein is described for use in bonding with a system for continuously cooling formed castings, those skilled in the art will readily recognize that a spray nozzle can be employed to meet a variety of needs. For example, this invention can be used to spray liquid preparations on crops, cool exhaust pipes, or gases from the scrubber tube. Therefore, the description of the spray nozzle 10 described for cooling castings should not be construed as limiting its use in any way. Further, although the preferred embodiment is described as having air that is supplied through the orifice 52 of air and fluid supplied through the fluid inlet passage 38, it is to be understood that these terms are used to exemplify the invention and of no mode are to limit the types of fluids that can be associated with any passage. Those skilled in the art will readily appreciate that modifications, changes or alterations can be made to the present invention without departing from the spirit or scope of the appended claims.

Claims (38)

1. CLAIMS 1.
2. A nozzle assembly comprising: a) a nozzle body having opposite inlet and outlet ends and an elongate passage extending therebetween; b) a fluid inlet passage extending through a wall of the nozzle body to communicate with the elongated passage; and c) a member positioned within the elongated passage having a neck portion, a head portion depending on the neck portion, and an air passage extending through the neck portion to the head portion, head portion that is made of a dimension and configured to cooperate with a complementary portion defined within the elongated passage and having an exit groove formed therein that traverses and intersects the air passage.
3. A nozzle assembly according to claim 1, wherein the head portion further includes a tapered upper surface that intersects the flow exit groove formed in the head portion.
4. A nozzle assembly according to claim 1, wherein the head portion further includes a tapered bottom surface and wherein the complementary portion of the elongated passage is defined by a shoulder having a surface configured to cooperate with the bottom, tapered surface .
5. A nozzle assembly according to claim 3, wherein the tapered lower surface and the shoulder surface are approximately parallel to each other and are formed approximately between an angle of 20 ° to 60 ° with respect to the longitudinal axis of the elongated passage of the body nozzle A nozzle assembly according to claim 1, wherein the flow outlet groove extends to the neck portion of the member.
6. A nozzle assembly according to claim 1, further including a nozzle tip having an inlet end and an outlet end with a chamber extending therebetween, the inlet end of the nozzle tip being in communication for fluids with the outlet end of the nozzle body.
7. A nozzle assembly according to claim 6, further including an extension tube that provides communication for fluids between the outlet end of the nozzle body and the inlet end of the nozzle tip.
8. A nozzle assembly according to claim 6, further including a pre-orifice member positioned proximate the inlet end of the nozzle tip to regulate the flow of fluid in the nozzle tip chamber.
9. A nozzle assembly according to claim 8, wherein the bore tip chamber has a generally hemispherical bottom surface defined therein.
10. A nozzle assembly according to claim 9, wherein the outlet end of the nozzle tip defines a discharge orifice.
11. A nozzle assembly according to claim 10, further including a diverting pin positioned within the nozzle tip proximal to the exit end and approximately parallel to a longitudinal line of symmetry in the discharge orifice.
12. A nozzle assembly according to claim 10, further including a diverting pin positioned within the nozzle tip proximal to the exit end and approximately perpendicular to a longitudinal line of symmetry of the discharge orifice.
13. A nozzle assembly according to claim 8, further including a biasing pin positioned within the nozzle tip proximal to the outlet end and approximately perpendicular to the longitudinal axis of the chamber.
14. 14. A nozzle assembly, comprising: a) a nozzle body having opposite inlet and outlet ends and an elongate passage extending therebetween; b) a fluid inlet passage extending through a wall of the nozzle body that provides communication for fluid with the elongated passage; and c) a member positioned within the elongated passage having a neck portion and a head portion that depends on the neck portion, the head portion having a tapered upper surface and a flow exit slot formed therein that intersects the tapered upper surface, the head portion is configured to cooperate with a complementary surface defined within the elongated passage and having a air passage that extends longitudinally through it that crosses the flow exit slot.
15. A nozzle assembly according to claim 14, wherein the head portion further includes a tapered bottom surface and wherein the complementary surface of the elongated passage is formed in a shoulder and is in intimate contact with the tapered bottom surface.
16. A nozzle assembly according to claim 15, wherein the tapered lower surface of the head portion is formed approximately between an angle of 20 ° to 60 ° with respect to the longitudinal axis of the elongated passage of the nozzle body.
17. 17. A nozzle assembly according to rei indication 14, wherein the flow outlet groove extends to the neck portion of the member.
18. A nozzle assembly according to claim 14, further including a nozzle tip having an inlet end and an outlet end with a chamber extending therebetween, the inlet end of the nozzle tip being in communication for fluids with the outlet end of the nozzle body.
19. A nozzle assembly according to claim 18, further including an extension tube between the nozzle body and the nozzle tip that provides communication for fluids therebetween.
20. A nozzle assembly according to claim 18, further including a pre-orifice member positioned proximate the inlet end of the nozzle tip to regulate the flow of fluid in the nozzle tip chamber.
21. 21. A nozzle assembly according to claim 20, wherein the nozzle tip chamber has a generally hemispherical bottom surface defined therein.
22. 22. A nozzle assembly according to claim 21, wherein the outlet end of the nozzle tip defines a discharge orifice.
23. A nozzle assembly according to claim 22, further including a bypass pin positioned inside the nozzle tip proximate the outlet end and approximately parallel to a longitudinal line of symmetry of the discharge orifice.
24. A nozzle assembly according to claim 20, further including a biasing pin positioned inside the nozzle tip proximate the outlet end and extending approximately perpendicular to the longitudinal axis of the chamber.
25. 25. A nozzle assembly, comprising: a) a nozzle body having opposite inlet and outlet ends and an elongate passage extending between these; b) a fluid inlet passage extending through a wall of the nozzle body that directs the fluid to the elongated passage; c) a member positioned within the entrance end of the elongated passage, the member having a neck portion proximate to the fluid inlet passage, a head portion dependent on the neck portion, and an air passage extending longitudinally through the member, wherein the head portion is made in one dimension and is configured to cooperate with a surface complementary to the elongate passage and further includes a flow exit groove that traverses and crosses the air passage; and d) a nozzle tip in communication for fluids with the outlet end of the nozzle body.
26. 26. A nozzle assembly according to claim 25, wherein the head portion further includes a tapered, lower surface and wherein the complementary surface of the elongate passage is defined by a shoulder having a surface configured to cooperate with the tapered bottom surface. .
27. 27. A nozzle assembly according to claim 26, wherein the tapered lower surface and the shoulder surface are approximately parallel and formed approximately between an angle of 20 ° to 60 ° with respect to the longitudinal axis of the elongated passage of the nozzle body. .
28. 28. A nozzle assembly according to claim 25, wherein the flow outlet groove extends to the neck portion of the member.
29. 29. A nozzle assembly according to claim 25, wherein the nozzle tip includes an inlet end and an outlet end with a chamber extending therebetween, the inlet end of the nozzle tip being in communication for fluids. with the outlet end of the nozzle body.
30. 30. A nozzle assembly according to claim 29, further including an extension tube between the outlet end of the nozzle body and the entry end of the nozzle tip.
31. A nozzle assembly according to claim 29, wherein the pre-orifice member positioned proximate the inlet end of the nozzle tip for regulating the fluid flow of the chamber. nozzle tip.
32. 32. A nozzle assembly according to claim 31, wherein the nozzle tip chamber has a generally hemispherical bottom surface defined therein.
33. 33. A nozzle assembly according to claim 32, wherein the outlet end of the nozzle tip defines a discharge orifice.
34. 34. A nozzle assembly according to claim 33, further including a diverting pin positioned within the nozzle tip proximal to the exit end and approximately parallel to a longitudinal line of symmetry of the discharge orifice.
35. 35. A nozzle assembly according to claim 31, further including a diverting pin positioned within the nozzle tip proximate the exit end and approximately perpendicular to the longitudinal axis of the chamber.
36. 36. A nozzle insert assembly comprising a nozzle tip having an inlet end and an outlet end with a chamber extending therebetween, the outlet end defining a discharge orifice and a bottom surface in hemispherical general, the nozzle insert assembly further includes a pre-orifice member positioned proximate the inlet end of the nozzle tip to regulate the flow of fluid from the chamber, and a bypass pin positioned at least partially inside the nozzle tip. a region surrounded by the generally hemispherical bottom surface proximate the discharge orifice to effect fluid flow from the nozzle tip.
37. 37. A nozzle insert assembly according to claim 36, wherein the diverting pin is positioned within the nozzle tip approximately parallel to a longitudinal line of symmetry of the discharge orifice.
38. 38. A nozzle insert assembly according to claim 36, wherein the diverting pin is positioned within the nozzle tip approximately perpendicular to a longitudinal line of symmetry of the discharge orifice.