US3858812A - Spray nozzle for low pressure spray and uniform spray pattern - Google Patents
Spray nozzle for low pressure spray and uniform spray pattern Download PDFInfo
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- US3858812A US3858812A US418728A US41872873A US3858812A US 3858812 A US3858812 A US 3858812A US 418728 A US418728 A US 418728A US 41872873 A US41872873 A US 41872873A US 3858812 A US3858812 A US 3858812A
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- nozzle
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- 239000007921 spray Substances 0.000 title claims abstract description 30
- 238000005507 spraying Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 238000009827 uniform distribution Methods 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
- B05B1/048—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like having a flow conduit with, immediately behind the outlet orifice, an elongated cross section, e.g. of oval or elliptic form, of which the major axis is perpendicular to the plane of the jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/40—Filters located upstream of the spraying outlets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49428—Gas and water specific plumbing component making
- Y10T29/49432—Nozzle making
- Y10T29/49433—Sprayer
Definitions
- the present invention is directed to improvements in spray nozzles and is particularly concerned with improvements in nozzles intended for low pressure spraymg.
- nozzle wear is directly related to spraying pressures.
- Use of relatively low pressure spraying increases the useful life of a nozzle by slowing the eroding effects of fluid on the nozzle passages.
- wear is undesirable because a relatively small amount of nozzle wear can result in an undesirable increase in nozzle capacity.
- Increase in nozzle capacity is especially harmful when the nozzle is used for spraying chemicals, where an undesirable increase in the quantity of chemicals sprayed results in a waste of chemical and may result in damage to crops, etc.
- low pressure spraying provides further advantage in that it enables a larger particle size in the sprayed fluid.
- the larger particle size is highly desirable in certain types of spraying as, for example, agricultural spraying wherein larger particle sizes reduce drifting of sprayed chemicals.
- Particle size is dependent upon the degree of atomization of fluid and this is directly related to operating pressures utilized with a nozzle. As operating pressures are reduced, the degree of atomization is reduced while fluid particle size in the sprayed fluid is increased. Particle size decreases as spraying pressures are increased.
- the major purposes of the present invention are to form spray nozzles in such a manner that relatively large particle size is achieved at relatively low operating pressures while the spray pattern formed by the nozzle at the low operating pressures produces a more nearly uniform distribution of the spray pattern without the characteristic heavy edges found in prior nozzles, and at the same time enable these objects with simple and inexpensive structure.
- FIG. 1 is a cross-sectional view of a typical nozzle assembly in which the present invention may be used;
- FIG. 2 is an end view of the nozzle illustrated in FIG.
- FIG. 3 is a cross-sectional view of a nozzle utilizing the principle of the present invention and taken along section lines 3-3 of FIG. 2;
- FIG. 4 is a cross-sectional view of the nozzle of FIG. 3 but taken along section lines 4-4 of FIG. 2 and at right angles to the section illustrated in FIG. 3;
- FIG. 5 is an end view of the nozzle of FIGS. 3 and I when looking at the entrance end of the nozzle passage and opposite to the direction of the view illustrated in FIG. 2;
- FIG. 6 is a sectional view illustrating a method of forming the nozzle of FIGS. 3, 4 and 5;
- FIG. 7 is a sectional view of another nozzle embodiment incorporating the principles of the present inventron.
- FIG. 8 is a cross-sectional view of the nozzle illustrated in FIG. 7, with the section being taken on a plane extending at right angles to the section shown in FIG.
- FIG. 9 is an end view of the nozzle of FIGS. 7 and 8 when looking at the entrance end of the nozzle orifice passage;
- FIG. 10 is a diagram of a spray pattern produced with the present invention.
- FIG. 11 is a diagram of a spray pattern having the undesirable heavy edges.
- a nozzle assembly like that of Wahlin U.S. Pat. No. 2,745,701 is illustrated.
- the assembly includes a body 10 having a large cylindrical opening 11 therethrough, a flat sided nozzle tip 12 which is made as a separate part and secured to the outer end of the body 10, a strainer 13 in the cylindrical opening 11 of the body and having an annular flange 14 at the outer end thereof interposed between the nozzle tip 12 and the outer end of the body 10, and a coupling 15 by which the nozzle tip 12 is secured to the body 10.
- the body 10 is internally threaded at 16 at its end remote from the tip 12 for connection to a pipe or other means through which liquid is supplied to the nozzle and the other end of the body is externally threaded at 17 for threaded connection therewith of the coupling 15.
- Coupling 15 is of a collar nut type with the outer end of the collar turned in as at 15a to engage over an annular flange 18 at the base of the nozzle tip for clamping the latter against the outer end of the strainer 13 and the strainer flange 14 against the outer end of the nozzle body.
- the coupling 15 and body 10 each have a portion of the length thereof of external hexagonal form as indicated at 19 and 20 respectively, or of other suitable form for engagement with a wrench for coupling and uncoupling the parts.
- the illustrated strainer 13 has a hollow cylindrical body 21 surrounded by a cylindrical screen 22.
- the strainer body 21 has a series of transverse slots 24 through its wall, preferably at several places therearound, for example at diametrically opposed sides thereof, so that the liquid introduced through the lower end of the nozzle passes through the screen into the interior of the strainer body 21.
- the nozzle tip 12 has a large bored out cavity or counterbore 26 communicating with the interior of the strainer body 21 and leading to a relatively small diameter bore or cylindrical passage 27 with convex or dome shaped outer end 28 through which the spray orifice 29 is formed.
- the orifice 29 is preferably recessed in the end of the nozzle at the bottom of a channel or groove 30 which extends in a direction across the nozzle end, and at its bottom, this groove 30 is provided with a small groove 31 usually of V-shape as shown, which cuts through and intersects the dome shaped outer end 28 of the bore or passage 27 to form the orifice opening 29 which is of long narrow shape and of an arcuate contour from end to end corresponding to the rounded end 28 of the bore 27 at the place where the orifice extends thereacross.
- the nozzle body opening 11, the relatively large nozzle tip cavity 26, and the small diameter bore 27, conjointly provide a passageway through which liquid is supplied to the orifice 29, and because of the small diameter of the bore 27, the liquid flows therethrough to the orifice 29 at a highly accelerated rate.
- the bore 27 is made with an abrupt shoulder around the entrance, substantially as shown at 32 in FIGS. 4 and 7, and is of a considerable length relative to the diameter thereof to insure a long straight path of accelerated flow of liquid before it reaches the orifice 29.
- Nozzles of this type may have a stepped bore configuration leading to the nozzle orifice passage as illustrated by the inner bore 26 and counterbore 26a in FIGS. 3 and 4.
- the depth of the counterbore may vary and may in some instances be omitted as is illustrated in the showing of the nozzle in FIG. 1.
- the entrance end of the nozzle orifice passage is restricted on opposite sides thereof by forming spaced and generally parallel protuberances therein. This is illustrated at 34 and 35 in FIGS. 4, and 6. This produces a generally oval cross-sectional configuration at the entrance end of the nozzle orifice passage 27, while the remainder of the nozzle orifice passage leading to the orifice is of uniform circular cross-sectional shape.
- the length of this restriction should be on the order of approximately one-third of the length of the nozzle orifice passage.
- the restriction at the entrance end of the nozzle orifice passage may be conveniently accomplished through use of a staking tool 36 which, as illustrated in FIG. 6, is inserted into the bore 26 of the nozzle body leading to the orifice passage. Diametrically spaced, staking tips 37 and 38 of the staking tool 36 are then forced into the wall or shoulder of the bore surrounding the nozzle orifice passage 27. This results in the formation of diametrically spaced and generally parallel V- shaped depressions 39 as viewed in cross-section in FIG. 6. This staking operation deforms or upsets the metal surrounding the nozzle orifice passage so as to force the metal toward the axis of the passage 27 to thereby form the protuberances 34 and 35.
- the nozzle body is illustrated at 12, and the spray pattern is designated at P.
- the pattern is shown as having a tapered form indicating generally uniform distribution throughout the pattern and with generally uniform distribution from end to end of the pattern. This is the pattern desired with low pressure spraying operation as accomplished by use of nozzles embody ing the present invention. This is distinguished from spray patterns as illustrated in FIG. 11 wherein a prior nozzle is designated at N, while the spray pattern resulting from use of the nozzles at relatively low spraying pressures is designated at P.
- the heavy edges referred to are diagrammatically shown at the ends of the pattern and designated by the letter E. It is this heavy distribution at the ends of the pattern defined by the nozzle that is undesirable in prior nozzles at low spraying pressures.
- the staking actions and thus the protuberances produced thereby be aligned along a plane extending perpendicular to the major axis of the elongated orifice 27 in the nozzle.
- the result of the protuberances is to produce a spray pattern having a pattern of distribution of the form illustrated in FIG. 10 wherein the pattern is more or less tapered and shaped during low pressure operation as distinguished from the relatively heavy edges to the pattern produced with other nozzles as illustrated in FIg. 11.
- FIG. 7 illustrates a modified form of the invention.
- the nozzle body is designated at 12 and is formed with an orifice passage 27 and outlet orifice in a manner similar to that illustrated in FIGS. 1-3.
- protuberances at the entrance end of the orifice passage are defined in a separate insert disc 40 which is positioned in the passage of larger diameter adjoining the nozzle orifice passage 27. The insert abuts the shoulder 32.
- This may be conveniently formed by molding or otherwise forming the protuberances 40a and 40b which define the more or less oval-like crosssectional shape (FIG. 9) for the passage 400 therethrough to the orifice passage in a disposition similar to that illustrated in FIGS. l-5.
- a spray nozzle suitable for use at relatively low spraying pressures and for defining a spray pattern of oval-shaped form and with a tapered distribution of the spray pattern at the edges thereof comprising a nozzle body having a cylindrical passage therein, said passage having an open entrance end and a discharge end terminating at a wall extending across the passage, an orifice in said wall and extending across the axis of said passage, said orifice being disposed symmetrically relative to the axis of said passage and being oval in form, said passage having a plurality of spaced protuberances formed in the wall thereof adjacent the entrance end of the passage whereby the entrance end of the passage has a generally oval cross-sectional shape, said protuberances extending from the entrance end of said passage toward said discharge end by a short distance.
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- Nozzles (AREA)
Abstract
A spray nozzle with spaced projections at the entrance end of the nozzle passage leading to the orifice to promote uniformity of spray.
Description
United StatesPatent [1 1 Williams et al.
[ Jan. 7, 1975 SPRAY NOZZLE FOR LOW PRESSURE SPRAY AND UNIFORM SPRAY PATTERN [75] Inventors: Robert P. Williams; Ted Lee Butterfield, both of Naperville; Lyle J. Emory, Darien, all of Ill.
[73] Assignee: Spraying Systems Co., Wheaton, Ill.
[22] Filed: Nov. 23, 1973 [21] Appl. No.: 418,728
[52] US Cl. 239/599, 239/601 [51] Int. Cl B05 b 1/00 [58] Field of Search 239/601, 599, DIG. l, 592
[ 56] References Cited UNITED STATES PATENTS 2,683,626 7/1954 Wahlin 239/599 2,701,412 2/1955 Wahlin 1. 239/599 3,045,932 7/1962 Steinen 3,754,710 8/1973 Chimara 239/601 FOREIGN PATENTS OR APPLICATIONS 717,464 10/1954 Great Britain 239/592 Primary Examiner-Lloyd L. King Attorney, Agent, or Firm-Mann, Brown, McWilliams & Bradway [57] ABSTRACT A spray nozzle with spaced projections at the entrance end of the nozzle passage leading to the orifice to promote uniformity of spray.
6 Claims, 11 Drawing Figures PATENTED JAN 7 I975 3, 858. 812
PATENTEDJA" 1815 I v 3.858.812
I SHEEI 20F 2 SWEDGED ORIFICE SPRAY NOZZLE FOR LOW PRESSURE SPRAY AND UNIFORM SPRAY PATTERN The present invention is directed to improvements in spray nozzles and is particularly concerned with improvements in nozzles intended for low pressure spraymg.
There are a number of advantages to low pressure spraying operations. For example, nozzle wear is directly related to spraying pressures. Use of relatively low pressure spraying increases the useful life of a nozzle by slowing the eroding effects of fluid on the nozzle passages. In this respect, wear is undesirable because a relatively small amount of nozzle wear can result in an undesirable increase in nozzle capacity. Increase in nozzle capacity is especially harmful when the nozzle is used for spraying chemicals, where an undesirable increase in the quantity of chemicals sprayed results in a waste of chemical and may result in damage to crops, etc. Also, low pressure spraying provides further advantage in that it enables a larger particle size in the sprayed fluid. The larger particle size is highly desirable in certain types of spraying as, for example, agricultural spraying wherein larger particle sizes reduce drifting of sprayed chemicals. Particle size is dependent upon the degree of atomization of fluid and this is directly related to operating pressures utilized with a nozzle. As operating pressures are reduced, the degree of atomization is reduced while fluid particle size in the sprayed fluid is increased. Particle size decreases as spraying pressures are increased.
While the advantages of low pressure spraying have been evident, previous nozzles have not been suitable at low spraying pressures because previous nozzles tended to produce heavy edges (undesirable and relatively large amounts of fluid) at the ends of the spray patterns. Attempts have been made to reduce the tendency to produce the heavy edge patterns as, for example, in Wahlin U.S. Pat. Nos. 2,745,701, and Levey patent 3,000,576. The Wahlin patent utilizes a circular bead at the entrance end of the nozzle passage and, while nozzles formed in this manner produce a substan tially uniform distribution of spraying at the edges at relatively high operating pressures, this effect is not as well defined at relatively low operating pressures as, for example, -20 p.s.i.g. Generally speaking, the present day operating pressures for agricultural purposes range from 30-60 p.s.i.g., and even higher in some cases. Levey et al. U.S. Pat. No. 3,000,576 uses a special passage configuration having a restricted orifice between the liquid supply and the nozzle passage for purposes of enabling high velocity, but low pressure flow. This arrangement produces a relatively high degree of particle atomization and does not produce the large particle size desired as aforementioned.
With the foregoing in mind, the major purposes of the present invention are to form spray nozzles in such a manner that relatively large particle size is achieved at relatively low operating pressures while the spray pattern formed by the nozzle at the low operating pressures produces a more nearly uniform distribution of the spray pattern without the characteristic heavy edges found in prior nozzles, and at the same time enable these objects with simple and inexpensive structure.
These and other purposes of the invention will become more apparent in the course of the ensuing specification and claims, when taken with the accompanying drawings, in which:
FIG. 1 is a cross-sectional view of a typical nozzle assembly in which the present invention may be used;
FIG. 2 is an end view of the nozzle illustrated in FIG.
FIG. 3 is a cross-sectional view of a nozzle utilizing the principle of the present invention and taken along section lines 3-3 of FIG. 2;
FIG. 4 is a cross-sectional view of the nozzle of FIG. 3 but taken along section lines 4-4 of FIG. 2 and at right angles to the section illustrated in FIG. 3;
FIG. 5 is an end view of the nozzle of FIGS. 3 and I when looking at the entrance end of the nozzle passage and opposite to the direction of the view illustrated in FIG. 2;
FIG. 6 is a sectional view illustrating a method of forming the nozzle of FIGS. 3, 4 and 5;
FIG. 7 is a sectional view of another nozzle embodiment incorporating the principles of the present inventron;
FIG. 8 is a cross-sectional view of the nozzle illustrated in FIG. 7, with the section being taken on a plane extending at right angles to the section shown in FIG.
FIG. 9 is an end view of the nozzle of FIGS. 7 and 8 when looking at the entrance end of the nozzle orifice passage;
FIG. 10 is a diagram of a spray pattern produced with the present invention; and
FIG. 11 is a diagram of a spray pattern having the undesirable heavy edges.
Like elements are described by like characters throughout the specification and claims.
Referring specifically now to the drawing, a nozzle assembly like that of Wahlin U.S. Pat. No. 2,745,701 is illustrated. The assembly includes a body 10 having a large cylindrical opening 11 therethrough, a flat sided nozzle tip 12 which is made as a separate part and secured to the outer end of the body 10, a strainer 13 in the cylindrical opening 11 of the body and having an annular flange 14 at the outer end thereof interposed between the nozzle tip 12 and the outer end of the body 10, and a coupling 15 by which the nozzle tip 12 is secured to the body 10.
The body 10 is internally threaded at 16 at its end remote from the tip 12 for connection to a pipe or other means through which liquid is supplied to the nozzle and the other end of the body is externally threaded at 17 for threaded connection therewith of the coupling 15. Coupling 15 is of a collar nut type with the outer end of the collar turned in as at 15a to engage over an annular flange 18 at the base of the nozzle tip for clamping the latter against the outer end of the strainer 13 and the strainer flange 14 against the outer end of the nozzle body. The coupling 15 and body 10 each have a portion of the length thereof of external hexagonal form as indicated at 19 and 20 respectively, or of other suitable form for engagement with a wrench for coupling and uncoupling the parts.
The illustrated strainer 13 has a hollow cylindrical body 21 surrounded by a cylindrical screen 22. The strainer body 21 has a series of transverse slots 24 through its wall, preferably at several places therearound, for example at diametrically opposed sides thereof, so that the liquid introduced through the lower end of the nozzle passes through the screen into the interior of the strainer body 21.
The nozzle tip 12 has a large bored out cavity or counterbore 26 communicating with the interior of the strainer body 21 and leading to a relatively small diameter bore or cylindrical passage 27 with convex or dome shaped outer end 28 through which the spray orifice 29 is formed.
The orifice 29 is preferably recessed in the end of the nozzle at the bottom of a channel or groove 30 which extends in a direction across the nozzle end, and at its bottom, this groove 30 is provided with a small groove 31 usually of V-shape as shown, which cuts through and intersects the dome shaped outer end 28 of the bore or passage 27 to form the orifice opening 29 which is of long narrow shape and of an arcuate contour from end to end corresponding to the rounded end 28 of the bore 27 at the place where the orifice extends thereacross.
Thus the nozzle body opening 11, the relatively large nozzle tip cavity 26, and the small diameter bore 27, conjointly provide a passageway through which liquid is supplied to the orifice 29, and because of the small diameter of the bore 27, the liquid flows therethrough to the orifice 29 at a highly accelerated rate.
Generally the bore 27 is made with an abrupt shoulder around the entrance, substantially as shown at 32 in FIGS. 4 and 7, and is of a considerable length relative to the diameter thereof to insure a long straight path of accelerated flow of liquid before it reaches the orifice 29.
Nozzles of this type may have a stepped bore configuration leading to the nozzle orifice passage as illustrated by the inner bore 26 and counterbore 26a in FIGS. 3 and 4.
The depth of the counterbore may vary and may in some instances be omitted as is illustrated in the showing of the nozzle in FIG. 1.
In accordance with the present invention, the entrance end of the nozzle orifice passage is restricted on opposite sides thereof by forming spaced and generally parallel protuberances therein. This is illustrated at 34 and 35 in FIGS. 4, and 6. This produces a generally oval cross-sectional configuration at the entrance end of the nozzle orifice passage 27, while the remainder of the nozzle orifice passage leading to the orifice is of uniform circular cross-sectional shape. The length of this restriction should be on the order of approximately one-third of the length of the nozzle orifice passage.
The restriction at the entrance end of the nozzle orifice passage may be conveniently accomplished through use of a staking tool 36 which, as illustrated in FIG. 6, is inserted into the bore 26 of the nozzle body leading to the orifice passage. Diametrically spaced, staking tips 37 and 38 of the staking tool 36 are then forced into the wall or shoulder of the bore surrounding the nozzle orifice passage 27. This results in the formation of diametrically spaced and generally parallel V- shaped depressions 39 as viewed in cross-section in FIG. 6. This staking operation deforms or upsets the metal surrounding the nozzle orifice passage so as to force the metal toward the axis of the passage 27 to thereby form the protuberances 34 and 35.
The result of this upsetting operation which provides a noncircular entrance end of the nozzle orifice passage is to break up the flow direction through the orifice passage and produce a turbulent condition.
The effect of this operation is to enable a liquid flow pattern as is illustrated in FIG. 10.
In FIG. 10 the nozzle body is illustrated at 12, and the spray pattern is designated at P. The pattern is shown as having a tapered form indicating generally uniform distribution throughout the pattern and with generally uniform distribution from end to end of the pattern. This is the pattern desired with low pressure spraying operation as accomplished by use of nozzles embody ing the present invention. This is distinguished from spray patterns as illustrated in FIG. 11 wherein a prior nozzle is designated at N, while the spray pattern resulting from use of the nozzles at relatively low spraying pressures is designated at P. The heavy edges referred to are diagrammatically shown at the ends of the pattern and designated by the letter E. It is this heavy distribution at the ends of the pattern defined by the nozzle that is undesirable in prior nozzles at low spraying pressures.
It is preferred that the staking actions and thus the protuberances produced thereby be aligned along a plane extending perpendicular to the major axis of the elongated orifice 27 in the nozzle.
The result of the protuberances is to produce a spray pattern having a pattern of distribution of the form illustrated in FIG. 10 wherein the pattern is more or less tapered and shaped during low pressure operation as distinguished from the relatively heavy edges to the pattern produced with other nozzles as illustrated in FIg. 11.
FIG. 7 illustrates a modified form of the invention. In this figure the nozzle body is designated at 12 and is formed with an orifice passage 27 and outlet orifice in a manner similar to that illustrated in FIGS. 1-3. In FIG. 7, protuberances at the entrance end of the orifice passage are defined in a separate insert disc 40 which is positioned in the passage of larger diameter adjoining the nozzle orifice passage 27. The insert abuts the shoulder 32. This may be conveniently formed by molding or otherwise forming the protuberances 40a and 40b which define the more or less oval-like crosssectional shape (FIG. 9) for the passage 400 therethrough to the orifice passage in a disposition similar to that illustrated in FIGS. l-5.
We claim:
1. A spray nozzle suitable for use at relatively low spraying pressures and for defining a spray pattern of oval-shaped form and with a tapered distribution of the spray pattern at the edges thereof, comprising a nozzle body having a cylindrical passage therein, said passage having an open entrance end and a discharge end terminating at a wall extending across the passage, an orifice in said wall and extending across the axis of said passage, said orifice being disposed symmetrically relative to the axis of said passage and being oval in form, said passage having a plurality of spaced protuberances formed in the wall thereof adjacent the entrance end of the passage whereby the entrance end of the passage has a generally oval cross-sectional shape, said protuberances extending from the entrance end of said passage toward said discharge end by a short distance.
2. A nozzle as defined in claim 1 wherein said protuberances are formed by upsetting the wall defining the approach area of the nozzle passage.
3. A nozzle as defined in claim I wherein said protuberances are aligned with a line perpendicular to the major axis of said orifice.
4. A nozzle as defined in claim 1 wherein the nozzle is defined by a single body of material.
5. A nozzle as defined in claim 1 wherein said body is defined by a multi-piece assembly of material, at least two of said pieces defining said cylindrical passage, one 5 of said pieces being disposed at the entrance end of said passage and having said protuberances therein.
said protuberances.
Claims (6)
1. A spray nozzle suitable for use at relatively low spraying pressures and for defining a spray pattern of oval-shaped form and with a tapered distribution of the spray pattern at the edges thereof, comprising a nozzle body having a cylindrical passage therein, said passage having an open entrance end and a discharge end terminating at a wall extending across the passage, an orifice in said wall and extending across the axis of said passage, said orifice being disposed symmetrically relative to the axis of said passage and being oval in form, said passage having a plurality of spaced protuberances formed in the wall thereof adjacent the entrance end of the passage whereby the entrance end of the passage has a generally oval cross-sectional shape, said protuberances extending from the entrance end of said passage toward said discharge end by a short distance.
2. A nozzle as defined in claim 1 wherein said protuberances are formed by upsetting the wall defining the approach area of the nozzle passage.
3. A nozzle as defined in claim 1 wherein said protuberances are aligned with a line perpendicular to the major axis of said orifice.
4. A nozzle as defined in claim 1 wherein the nozzle is defined by a single body of material.
5. A nozzle as defined in claim 1 wherein said body is defined by a multi-piece assembly of material, at least two of said pieces defining said cylindrical passage, one of said pieces being disposed at the entrance end of said passage and having said protuberances therein.
6. A nozzle as defined in claim 1 wherein said body has a counterbore defining a shoulder around the entrance end of said cylindrical passage, said shoulder having grooves therein adjacent the material defining said protuberances.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US418728A US3858812A (en) | 1973-11-23 | 1973-11-23 | Spray nozzle for low pressure spray and uniform spray pattern |
IT54167/74A IT1023347B (en) | 1973-11-23 | 1974-11-21 | IMPROVEMENT IN SPRAYING NOZZLES IN PARTICULAR FOR BAS SA PRESSURE |
CA214,387A CA1014192A (en) | 1973-11-23 | 1974-11-21 | Spraying nozzle for low pressure spray and uniform spray pattern |
DK607074AA DK140686B (en) | 1973-11-23 | 1974-11-21 | Spray nozzle for low pressure spraying. |
JP13321474A JPS5650623B2 (en) | 1973-11-23 | 1974-11-21 | |
SE7414646A SE407161B (en) | 1973-11-23 | 1974-11-21 | SPRAY NOZZLE |
FR7438412A FR2252134B1 (en) | 1973-11-23 | 1974-11-22 | |
GB50692/74A GB1486437A (en) | 1973-11-23 | 1974-11-22 | Spray nozzle for low pressure spray |
AU75638/74A AU479387B2 (en) | 1973-11-23 | 1974-11-22 | Spray nozzle for low pressure spray and uniform spray pattern |
DE2455738A DE2455738C3 (en) | 1973-11-23 | 1974-11-25 | Spray nozzle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US418728A US3858812A (en) | 1973-11-23 | 1973-11-23 | Spray nozzle for low pressure spray and uniform spray pattern |
Publications (1)
Publication Number | Publication Date |
---|---|
US3858812A true US3858812A (en) | 1975-01-07 |
Family
ID=23659343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US418728A Expired - Lifetime US3858812A (en) | 1973-11-23 | 1973-11-23 | Spray nozzle for low pressure spray and uniform spray pattern |
Country Status (9)
Country | Link |
---|---|
US (1) | US3858812A (en) |
JP (1) | JPS5650623B2 (en) |
CA (1) | CA1014192A (en) |
DE (1) | DE2455738C3 (en) |
DK (1) | DK140686B (en) |
FR (1) | FR2252134B1 (en) |
GB (1) | GB1486437A (en) |
IT (1) | IT1023347B (en) |
SE (1) | SE407161B (en) |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983000134A1 (en) * | 1981-07-10 | 1983-01-20 | Minnesota Mining & Mfg | Aerosol fan sprayhead |
US4372399A (en) * | 1982-03-11 | 1983-02-08 | Development Oil Tool Systems | Drill bit with wedge shaped eduction jets |
WO1985002132A1 (en) * | 1983-11-07 | 1985-05-23 | Spraying Systems Co. | Nozzle for atomized fan-shaped spray |
US4618101A (en) * | 1983-11-25 | 1986-10-21 | Piggott Richard G | Spray nozzle |
EP0236142A2 (en) * | 1986-03-06 | 1987-09-09 | Sprayer Calibrator Corporation | Sprayer and nozzle calibrator |
US4905911A (en) * | 1987-01-19 | 1990-03-06 | Shimon Kabushiki Kaisha | Fan-spray nozzle |
DE3914551C1 (en) * | 1989-05-03 | 1990-11-15 | Lechler Gmbh & Co Kg, 7012 Fellbach, De | |
US4982896A (en) * | 1988-10-17 | 1991-01-08 | Lee Crow | Spray wand |
US5017409A (en) * | 1988-06-13 | 1991-05-21 | Union Carbide Chemicals And Plastics Technology Corporation | Method of conformal coating |
US5109823A (en) * | 1990-02-23 | 1992-05-05 | Hitachi, Ltd. | Fuel injector device and method of producing the same |
US5127156A (en) * | 1989-09-25 | 1992-07-07 | Hitachi, Ltd. | Method for concentrically assembling a pair of cylindrical members and method for assembling a nozzle in a fuel injector |
DE4213226A1 (en) * | 1992-04-23 | 1993-11-04 | Lechler Gmbh & Co Kg | Flat jet nozzle, esp. high pressure jet nozzle - has shaped recesses in wall of pocket bore, to generate part jets directed towards each other |
US5266349A (en) * | 1991-02-25 | 1993-11-30 | Specialty Coating Systems Inc. | Method of discrete conformal coating |
US5359876A (en) * | 1991-11-19 | 1994-11-01 | Robert Bosch Gmbh | Method for producing a nozzle holder of an electromagnetically actuated injection valve |
US5669971A (en) * | 1994-04-06 | 1997-09-23 | Specialty Coating Systems, Inc. | Selective coating apparatus |
US5707010A (en) * | 1995-09-29 | 1998-01-13 | Spraying Systems Co. | Controllable spray nozzle assembly |
WO2000067916A1 (en) * | 1999-05-10 | 2000-11-16 | Nordson Corporation | Method and apparatus for dispensing liquid material |
US20100326066A1 (en) * | 2009-06-29 | 2010-12-30 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20100329903A1 (en) * | 2009-06-29 | 2010-12-30 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20110115223A1 (en) * | 2009-06-29 | 2011-05-19 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20110233934A1 (en) * | 2010-03-24 | 2011-09-29 | Lightsail Energy Inc. | Storage of compressed air in wind turbine support structure |
EP2476874A1 (en) * | 2011-01-13 | 2012-07-18 | Delphi Technologies Holding S.à.r.l. | Injection Device for Reagent |
WO2015039078A1 (en) * | 2013-09-16 | 2015-03-19 | Graco Minnesota Inc. | Spray tip and method of manufacture |
WO2016172105A1 (en) | 2015-04-20 | 2016-10-27 | Wagner Spray Tech Corporation | Low pressure spray tip configurations |
US11865568B2 (en) | 2018-03-15 | 2024-01-09 | Wagner Spray Tech Corporation | Spray tip design and manufacture |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6143555Y2 (en) * | 1977-02-04 | 1986-12-09 | ||
DE3414880A1 (en) * | 1984-04-19 | 1985-10-24 | Lechler Gmbh & Co Kg | FLAT JET SPRAY NOZZLE, ESPECIALLY FOR SPRAYING PLANT PROTECTION PRODUCTS |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2683626A (en) * | 1949-07-14 | 1954-07-13 | Spraying Systems Co | Spray nozzle and duplex assembly thereof and method of making a nozzle orifice |
US2701412A (en) * | 1952-06-14 | 1955-02-08 | Spraying Systems Co | Method of making spray nozzle orifice with plural tapered ends |
US3045932A (en) * | 1959-06-22 | 1962-07-24 | William F Steinen | Spray nozzle |
US3754710A (en) * | 1971-08-07 | 1973-08-28 | Inouye Shokai & Co Ltd K K | Nozzle tip of a spray gun of the airless type |
-
1973
- 1973-11-23 US US418728A patent/US3858812A/en not_active Expired - Lifetime
-
1974
- 1974-11-21 JP JP13321474A patent/JPS5650623B2/ja not_active Expired
- 1974-11-21 IT IT54167/74A patent/IT1023347B/en active
- 1974-11-21 SE SE7414646A patent/SE407161B/en not_active IP Right Cessation
- 1974-11-21 CA CA214,387A patent/CA1014192A/en not_active Expired
- 1974-11-21 DK DK607074AA patent/DK140686B/en unknown
- 1974-11-22 FR FR7438412A patent/FR2252134B1/fr not_active Expired
- 1974-11-22 GB GB50692/74A patent/GB1486437A/en not_active Expired
- 1974-11-25 DE DE2455738A patent/DE2455738C3/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2683626A (en) * | 1949-07-14 | 1954-07-13 | Spraying Systems Co | Spray nozzle and duplex assembly thereof and method of making a nozzle orifice |
US2701412A (en) * | 1952-06-14 | 1955-02-08 | Spraying Systems Co | Method of making spray nozzle orifice with plural tapered ends |
US3045932A (en) * | 1959-06-22 | 1962-07-24 | William F Steinen | Spray nozzle |
US3754710A (en) * | 1971-08-07 | 1973-08-28 | Inouye Shokai & Co Ltd K K | Nozzle tip of a spray gun of the airless type |
Cited By (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983000134A1 (en) * | 1981-07-10 | 1983-01-20 | Minnesota Mining & Mfg | Aerosol fan sprayhead |
US4372399A (en) * | 1982-03-11 | 1983-02-08 | Development Oil Tool Systems | Drill bit with wedge shaped eduction jets |
WO1985002132A1 (en) * | 1983-11-07 | 1985-05-23 | Spraying Systems Co. | Nozzle for atomized fan-shaped spray |
JPS61500597A (en) * | 1983-11-07 | 1986-04-03 | スプレイイング システムズ カンパニ− | Improved nozzle device |
US4591099A (en) * | 1983-11-07 | 1986-05-27 | Spraying Systems Co. | Nozzle to provide fan-shaped spray pattern |
AU572922B2 (en) * | 1983-11-07 | 1988-05-19 | Spraying Systems Co. | Nozzle for atomized fan-shaped spray |
JPH0464747B2 (en) * | 1983-11-07 | 1992-10-15 | Spraying Systems Co | |
US4618101A (en) * | 1983-11-25 | 1986-10-21 | Piggott Richard G | Spray nozzle |
EP0236142A2 (en) * | 1986-03-06 | 1987-09-09 | Sprayer Calibrator Corporation | Sprayer and nozzle calibrator |
EP0236142A3 (en) * | 1986-03-06 | 1988-07-20 | Sprayer Calibrator Corporation | Sprayer and nozzle calibrator |
US4905911A (en) * | 1987-01-19 | 1990-03-06 | Shimon Kabushiki Kaisha | Fan-spray nozzle |
US5017409A (en) * | 1988-06-13 | 1991-05-21 | Union Carbide Chemicals And Plastics Technology Corporation | Method of conformal coating |
US4982896A (en) * | 1988-10-17 | 1991-01-08 | Lee Crow | Spray wand |
US5133502A (en) * | 1989-05-03 | 1992-07-28 | Lechler Gmbh & Co. | Flat-jet nozzle to atomize liquids into comparatively coarse drops |
DE3914551C1 (en) * | 1989-05-03 | 1990-11-15 | Lechler Gmbh & Co Kg, 7012 Fellbach, De | |
US5127156A (en) * | 1989-09-25 | 1992-07-07 | Hitachi, Ltd. | Method for concentrically assembling a pair of cylindrical members and method for assembling a nozzle in a fuel injector |
US5109823A (en) * | 1990-02-23 | 1992-05-05 | Hitachi, Ltd. | Fuel injector device and method of producing the same |
US5266349A (en) * | 1991-02-25 | 1993-11-30 | Specialty Coating Systems Inc. | Method of discrete conformal coating |
US5359876A (en) * | 1991-11-19 | 1994-11-01 | Robert Bosch Gmbh | Method for producing a nozzle holder of an electromagnetically actuated injection valve |
DE4213226A1 (en) * | 1992-04-23 | 1993-11-04 | Lechler Gmbh & Co Kg | Flat jet nozzle, esp. high pressure jet nozzle - has shaped recesses in wall of pocket bore, to generate part jets directed towards each other |
US5669971A (en) * | 1994-04-06 | 1997-09-23 | Specialty Coating Systems, Inc. | Selective coating apparatus |
US5707010A (en) * | 1995-09-29 | 1998-01-13 | Spraying Systems Co. | Controllable spray nozzle assembly |
WO2000067916A1 (en) * | 1999-05-10 | 2000-11-16 | Nordson Corporation | Method and apparatus for dispensing liquid material |
US6261367B1 (en) | 1999-05-10 | 2001-07-17 | Nordson Corporation | Method and apparatus for dispensing liquid material |
US20110030552A1 (en) * | 2009-06-29 | 2011-02-10 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US8065874B2 (en) | 2009-06-29 | 2011-11-29 | Lightsale Energy, Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20100326069A1 (en) * | 2009-06-29 | 2010-12-30 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20100326064A1 (en) * | 2009-06-29 | 2010-12-30 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
WO2011008500A2 (en) | 2009-06-29 | 2011-01-20 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20110023977A1 (en) * | 2009-06-29 | 2011-02-03 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20110023488A1 (en) * | 2009-06-29 | 2011-02-03 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
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US20100326066A1 (en) * | 2009-06-29 | 2010-12-30 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20110115223A1 (en) * | 2009-06-29 | 2011-05-19 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US8240142B2 (en) | 2009-06-29 | 2012-08-14 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
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US8353156B2 (en) | 2009-06-29 | 2013-01-15 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
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US8201402B2 (en) | 2009-06-29 | 2012-06-19 | Lightsail Energy, Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US8215105B2 (en) | 2009-06-29 | 2012-07-10 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20100329903A1 (en) * | 2009-06-29 | 2010-12-30 | Lightsail Energy Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US8436489B2 (en) | 2009-06-29 | 2013-05-07 | Lightsail Energy, Inc. | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange |
US20110233934A1 (en) * | 2010-03-24 | 2011-09-29 | Lightsail Energy Inc. | Storage of compressed air in wind turbine support structure |
US8247915B2 (en) | 2010-03-24 | 2012-08-21 | Lightsail Energy, Inc. | Energy storage system utilizing compressed gas |
EP2476874A1 (en) * | 2011-01-13 | 2012-07-18 | Delphi Technologies Holding S.à.r.l. | Injection Device for Reagent |
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WO2012095450A1 (en) * | 2011-01-13 | 2012-07-19 | Delphi Technologies Holding S.À.R.L. | Injection device for reagent |
CN103282613B (en) * | 2011-01-13 | 2015-09-16 | 德尔福国际运营卢森堡有限公司 | For the injection device of reagent |
CN110237955A (en) * | 2013-09-16 | 2019-09-17 | 固瑞克明尼苏达有限公司 | Spary tip and manufacturing method |
CN105531033A (en) * | 2013-09-16 | 2016-04-27 | 格瑞克明尼苏达有限公司 | Spray tip and method of manufacture |
US9675982B2 (en) | 2013-09-16 | 2017-06-13 | Graco Minnesota Inc. | Spray tip and method of manufacture |
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WO2015039078A1 (en) * | 2013-09-16 | 2015-03-19 | Graco Minnesota Inc. | Spray tip and method of manufacture |
US10525486B2 (en) | 2013-09-16 | 2020-01-07 | Graco Minnesota Inc. | Spray tip and method of manufacture |
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WO2016172105A1 (en) | 2015-04-20 | 2016-10-27 | Wagner Spray Tech Corporation | Low pressure spray tip configurations |
US10913079B2 (en) | 2015-04-20 | 2021-02-09 | Wagner Spray Tech Corporation | Low pressure spray tip configurations |
US11865568B2 (en) | 2018-03-15 | 2024-01-09 | Wagner Spray Tech Corporation | Spray tip design and manufacture |
Also Published As
Publication number | Publication date |
---|---|
CA1014192A (en) | 1977-07-19 |
AU7563874A (en) | 1976-05-27 |
SE407161B (en) | 1979-03-19 |
DK140686B (en) | 1979-10-29 |
FR2252134B1 (en) | 1982-04-23 |
DE2455738B2 (en) | 1977-07-28 |
DK140686C (en) | 1980-03-24 |
SE7414646L (en) | 1975-05-26 |
JPS5089910A (en) | 1975-07-18 |
DK607074A (en) | 1975-07-21 |
GB1486437A (en) | 1977-09-21 |
DE2455738A1 (en) | 1975-10-09 |
FR2252134A1 (en) | 1975-06-20 |
DE2455738C3 (en) | 1978-04-27 |
IT1023347B (en) | 1978-05-10 |
JPS5650623B2 (en) | 1981-11-30 |
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