US2429267A - Spray nozzle - Google Patents

Spray nozzle Download PDF

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Publication number
US2429267A
US2429267A US543907A US54390744A US2429267A US 2429267 A US2429267 A US 2429267A US 543907 A US543907 A US 543907A US 54390744 A US54390744 A US 54390744A US 2429267 A US2429267 A US 2429267A
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United States
Prior art keywords
nozzle
outlet
spray
wall
chamber
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Expired - Lifetime
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US543907A
Inventor
Charles R Keep
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CBS Corp
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Westinghouse Electric Corp
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Publication date
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Priority to US543907A priority Critical patent/US2429267A/en
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    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3478—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet the liquid flowing at least two different courses before reaching the swirl chamber
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis

Definitions

  • This invention relates to spray nozzles and relates more particularly to spray nozzles of the type disclosed in my Patent No. 2,257,691, which are adapted to produce large volumes of spray over wide angles and under low pressures,
  • the nozzle of my said patent produces a wide angle of spray filled with relatively coarse droplets as is desired for the spraying of evaporator tubes and the wetting of filters in air washers.
  • the nozzle of this invention provides results superior to those of the patent and has the additional advantages that it may be manufactured and serviced at less expense, and in addition may be made of plastic as well as of metal.
  • Objects of the invention are to provide a spray nozzle which will provide large spray angles filled with relatively coarse droplets, which may be manufactured and serviced at less expense than prior nozzles.
  • Fig. 1 is a front elevation of a spray nozzle embodying this invention
  • Fig. 2 is a side elevation of the nozzle of Fig. 1;
  • Fig. 3 is a sectional view along the lines 3-3 of Fig. 1;
  • Fig. 4 is a view similar to Fig. 1 but with the end cap removed;
  • Fig. 5 is a sectional view along the lines 55 of Fig. 3, and
  • Fig. 6 is a sectional view along the lines 6--6 of Fig. 2.
  • the nozzle has a hollow, tapered, whirl chamber ill, the outer portion of which is formed by the inner wall of the removable plug or cap II, the inner portion of which is threaded and is screwed into the nozzle around the chamber ID.
  • the base I2 of the nozzle is internally threaded for connection to a liquid supply pipe or header and the cylindrical passage I3 extends from the interior of the base and connects substantially tangentially with the whirl chamber III at the center thereof. 1
  • the plug I I has the outlet Id connecting with the whirl chamber I and diverging outwardly therefrom for spraying the liquid received from the nozzle through a relatively wide angle.
  • the inner nozzle I converges towards the outlet I and has inner and outer Walls formed as surfaces of revolution.
  • the outer end I 6 of the nozzle I5 extends in a vertical plane across the outlet of the passage I3 and divides the liquid passing therefrom into the whirl chamber In into two streams, one of which after spinning around the curved inner wall of the plug II passes directly from the outlet I4, and the other of which passes into the nozzle I5 and is projected from its outlet I'I, centrally into the outlet MintheplugII.
  • the plate l8 may be attached to the inner nozzle l5 so as to extend across the inlet to same so as to take the spin out of the liquid entering the inner nozzle. It preferably should have curved edges complemental to and contacting the curved Walls of the whirl chamber to the rear with respect to liquid flow, of the nozzle I5.
  • the liquid passing from the nozzle I5 has its velocity increased due to the converging walls with the apparent result that upon being projected into the whirling liquid passing directly from the outlet I4, it provides a, spray more completely filled with coarse spray droplets.
  • the outlet ll of the nozzle I5 should have a diameter less than that of the outlet l4 and should be spaced therefrom a distance not less than the outer diameter of the outlet II.
  • the inner wall of the nozzle may be recessed as illustrated by Figs. 3 and 6, to receive the outer edge of the base of the nozzle I5 which may be attached thereto when the plu II is removed, as by soldering or brazing if the nozzle is of metal, or by cementing if the nozzle is of plastic material.
  • the nozzle l5 projects a cone shaped spray of relatively coarse droplets into the center of the wider angled cone of spray resulting from the liquid leaving the whirl chamber I0 and passing directly from the outlet I4, the overall result of the two sprays being a wide angle cone completely filled with coarse droplets.
  • the liquid leaving the whirl chamber I ll and passing directly therefrom through the outlet [4 provides a wide angle cone of spray which without the use of the inner nozzle l5 would not be filled with coarse spray droplets as is desired.
  • the nozzle I5 projects a high velocity jet into the water passing through the outlet I4 and reacts with it providing a wide angled cone completely filled with relatively large spray droplets.
  • a spray nozzle having an inner whirl cham her with a wall converged at the opposite ends thereof, said wall having an outwardly diverging outlet formed therein, said nozzle having a liquid supply passage with a wall connecting substantially tangentially with a wall of said chamber whereby the liquid entering said chamber is given a spin, and means forming an inner nozzle in said whirl chamber, said means being positioned to extend crosswise of the whirl chamber and to form a partition across said passage for dividing the flow therefrom into two streams, one into said diverging nozzle and the other into said inner nozzle, said inner nozzle having an outlet aligned axially with said outlet and spaced therefrom.
  • a spray nozzle having an inner whirl chamber with a wall converged at the opposite ends thereof, said, wall having an outwardly diverging outlet formed therein, said nozzle having a liquid supply passage with a, wall connecting substantially tangentially with a wall of said chamber whereby the liquid entering said :chamber'is given a spin, and means forming an inner nozzle in said whirl chamber and extending crosswise same, and
  • a spray nozzle having an inner whirl chamber with a wall converged at the opposite ends thereof, said wall having an outwardly diverging outlet formed therein, said nozzle having a liquid supply passage with a wall connecting substantially tangentially with a wall of said chamber whereby the liquid entering said chamber is given a spin, and' neans forming an inner nozzle in said whirl chamber and extending crosswise same, and
  • a spray nozzle having an inner whirl chamher with a wall converged at the opposite ends thereof, said wall having an outwardly diverging outlet formed therein, said'nozzle having a liquid supplypas'sage with aw all connectingsubstantially tangentially with awa-ll of said chamber h b d a e sai hemb s iven a spin, "and m'eansiorming an inner nozzle in ai ifl h mbermq'x eedies ro swise me, and forming a partition across said passage for ing the flow therefrom into two streams, one into said diverging outlet and the other into said inner nozzle, said inner nozzle having walls converging towards-said outlet and having an outlet aligned axially with said first mentioned outlet and spaced therefrom, said converging wall being removable for insertion of said inner nozzle.

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Description

Oct. 21, 1947. c. R. KEEP SPRAY NOZZLE Filed July 7, 1944 I INVENTOR. v Charles R. Keq v. BY 7 91w miorne Patented Oct. 21, 1947 SPRAY NOZZLE Charles R. Keep, Norwood, Mass., assignor, by mesne assignments, to Westinghouse Electric Corporation, a corporation of Pennsylvania Application July 7, 1944, Serial No. 543,907
4 Claims.
This invention relates to spray nozzles and relates more particularly to spray nozzles of the type disclosed in my Patent No. 2,257,691, which are adapted to produce large volumes of spray over wide angles and under low pressures,
The nozzle of my said patent produces a wide angle of spray filled with relatively coarse droplets as is desired for the spraying of evaporator tubes and the wetting of filters in air washers. The nozzle of this invention provides results superior to those of the patent and has the additional advantages that it may be manufactured and serviced at less expense, and in addition may be made of plastic as well as of metal.
Objects of the invention are to provide a spray nozzle which will provide large spray angles filled with relatively coarse droplets, which may be manufactured and serviced at less expense than prior nozzles.
The invention will now be described with reference to the drawing, of which:
Fig. 1 is a front elevation of a spray nozzle embodying this invention;
Fig. 2 is a side elevation of the nozzle of Fig. 1;
Fig. 3 is a sectional view along the lines 3-3 of Fig. 1;
Fig. 4 is a view similar to Fig. 1 but with the end cap removed;
Fig. 5 is a sectional view along the lines 55 of Fig. 3, and
Fig. 6 is a sectional view along the lines 6--6 of Fig. 2.
The nozzle has a hollow, tapered, whirl chamber ill, the outer portion of which is formed by the inner wall of the removable plug or cap II, the inner portion of which is threaded and is screwed into the nozzle around the chamber ID. The base I2 of the nozzle is internally threaded for connection to a liquid supply pipe or header and the cylindrical passage I3 extends from the interior of the base and connects substantially tangentially with the whirl chamber III at the center thereof. 1
The plug I I has the outlet Id connecting with the whirl chamber I and diverging outwardly therefrom for spraying the liquid received from the nozzle through a relatively wide angle.
The inner nozzle I converges towards the outlet I and has inner and outer Walls formed as surfaces of revolution. The outer end I 6 of the nozzle I5 extends in a vertical plane across the outlet of the passage I3 and divides the liquid passing therefrom into the whirl chamber In into two streams, one of which after spinning around the curved inner wall of the plug II passes directly from the outlet I4, and the other of which passes into the nozzle I5 and is projected from its outlet I'I, centrally into the outlet MintheplugII.
The plate l8 may be attached to the inner nozzle l5 so as to extend across the inlet to same so as to take the spin out of the liquid entering the inner nozzle. It preferably should have curved edges complemental to and contacting the curved Walls of the whirl chamber to the rear with respect to liquid flow, of the nozzle I5.
The liquid passing from the nozzle I5 has its velocity increased due to the converging walls with the apparent result that upon being projected into the whirling liquid passing directly from the outlet I4, it provides a, spray more completely filled with coarse spray droplets.
As disclosed in said patent, the outlet ll of the nozzle I5 should have a diameter less than that of the outlet l4 and should be spaced therefrom a distance not less than the outer diameter of the outlet II.
The inner wall of the nozzle may be recessed as illustrated by Figs. 3 and 6, to receive the outer edge of the base of the nozzle I5 which may be attached thereto when the plu II is removed, as by soldering or brazing if the nozzle is of metal, or by cementing if the nozzle is of plastic material.
In operation, the nozzle l5 projects a cone shaped spray of relatively coarse droplets into the center of the wider angled cone of spray resulting from the liquid leaving the whirl chamber I0 and passing directly from the outlet I4, the overall result of the two sprays being a wide angle cone completely filled with coarse droplets.
In operation, the liquid leaving the whirl chamber I ll and passing directly therefrom through the outlet [4 provides a wide angle cone of spray which without the use of the inner nozzle l5 would not be filled with coarse spray droplets as is desired. The nozzle I5 projects a high velocity jet into the water passing through the outlet I4 and reacts with it providing a wide angled cone completely filled with relatively large spray droplets.
While one embodiment of the invention has been described for the purpose of illustration, it should be understood that the invention is not limited to the exact disclosure, since modifications thereof may be suggested by those skilled in the art, without departure from the essence of the invention.
What is claimed is:
1. A spray nozzle having an inner whirl cham her with a wall converged at the opposite ends thereof, said wall having an outwardly diverging outlet formed therein, said nozzle having a liquid supply passage with a wall connecting substantially tangentially with a wall of said chamber whereby the liquid entering said chamber is given a spin, and means forming an inner nozzle in said whirl chamber, said means being positioned to extend crosswise of the whirl chamber and to form a partition across said passage for dividing the flow therefrom into two streams, one into said diverging nozzle and the other into said inner nozzle, said inner nozzle having an outlet aligned axially with said outlet and spaced therefrom.
2. A spray nozzle having an inner whirl chamber with a wall converged at the opposite ends thereof, said, wall having an outwardly diverging outlet formed therein, said nozzle having a liquid supply passage with a, wall connecting substantially tangentially with a wall of said chamber whereby the liquid entering said :chamber'is given a spin, and means forming an inner nozzle in said whirl chamber and extending crosswise same, and
dividing the flow therefrom into two streams, one into said diverging outlet and the other into said inner nozzle, said inner nozzle having an outlet aligned axially with said first mentioned outlet and spaced therefrom, said converging wall being removable for insertion of said inner nozzle.
i, A spray nozzle having an inner whirl chamber with a wall converged at the opposite ends thereof, said wall having an outwardly diverging outlet formed therein, said nozzle having a liquid supply passage with a wall connecting substantially tangentially with a wall of said chamber whereby the liquid entering said chamber is given a spin, and' neans forming an inner nozzle in said whirl chamber and extending crosswise same, and
forming a partition across said passage for dividforming a partition across-said passage for divid- 'ing the flow therefrom into twostreams, one into said diverging nozzle and the other into said inner nozzle, 'sa-id inner nozzle having walls converging towards-saiddiverging outlet and having an outlet aligned axially with said iirst mentioned. outlet and spaced therefrom,
3. A spray nozzle having an inner whirl chamher with a wall converged at the opposite ends thereof, said wall having an outwardly diverging outlet formed therein, said'nozzle having a liquid supplypas'sage with aw all connectingsubstantially tangentially with awa-ll of said chamber h b d a e sai hemb s iven a spin, "and m'eansiorming an inner nozzle in ai ifl h mbermq'x eedies ro swise me, and forming a partition across said passage for ing the flow therefrom into two streams, one into said diverging outlet and the other into said inner nozzle, said inner nozzle having walls converging towards-said outlet and having an outlet aligned axially with said first mentioned outlet and spaced therefrom, said converging wall being removable for insertion of said inner nozzle.
CHARLES R.
REFERENCES oI- rE "The following references are of record in the file or this patent:
US543907A 1944-07-07 1944-07-07 Spray nozzle Expired - Lifetime US2429267A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502755A (en) * 1948-06-17 1950-04-04 Globe Automatic Sprinkler Co Spray nozzle
US2578392A (en) * 1949-05-14 1951-12-11 Viking Corp Spray nozzle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US580151A (en) * 1897-04-06 Mary n
US1029909A (en) * 1910-01-03 1912-06-18 Edward C Brown Spray-nozzle.
US1163591A (en) * 1909-12-27 1915-12-07 Spray Engineering Co Spray-nozzle.
US1186241A (en) * 1915-08-24 1916-06-06 Spray Engineering Co Fluid-spray nozzle.
US1390048A (en) * 1920-04-02 1921-09-06 Lange William Spraying-nozzle
US1430832A (en) * 1918-11-23 1922-10-03 Edward E Murphy Method and means for burning carbonaceous fuel and water
US2161016A (en) * 1936-06-11 1939-06-06 Clifford H Carr Spray nozzle
US2247897A (en) * 1940-03-22 1941-07-01 Spraying Systems Co Spray nozzle
US2257691A (en) * 1938-11-17 1941-09-30 B F Sturtevant Co Spray nozzle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US580151A (en) * 1897-04-06 Mary n
US1163591A (en) * 1909-12-27 1915-12-07 Spray Engineering Co Spray-nozzle.
US1029909A (en) * 1910-01-03 1912-06-18 Edward C Brown Spray-nozzle.
US1186241A (en) * 1915-08-24 1916-06-06 Spray Engineering Co Fluid-spray nozzle.
US1430832A (en) * 1918-11-23 1922-10-03 Edward E Murphy Method and means for burning carbonaceous fuel and water
US1390048A (en) * 1920-04-02 1921-09-06 Lange William Spraying-nozzle
US2161016A (en) * 1936-06-11 1939-06-06 Clifford H Carr Spray nozzle
US2257691A (en) * 1938-11-17 1941-09-30 B F Sturtevant Co Spray nozzle
US2247897A (en) * 1940-03-22 1941-07-01 Spraying Systems Co Spray nozzle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502755A (en) * 1948-06-17 1950-04-04 Globe Automatic Sprinkler Co Spray nozzle
US2578392A (en) * 1949-05-14 1951-12-11 Viking Corp Spray nozzle

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