US3608832A - Spray nozzle assembly operable at low pressure - Google Patents
Spray nozzle assembly operable at low pressure Download PDFInfo
- Publication number
- US3608832A US3608832A US855342A US3608832DA US3608832A US 3608832 A US3608832 A US 3608832A US 855342 A US855342 A US 855342A US 3608832D A US3608832D A US 3608832DA US 3608832 A US3608832 A US 3608832A
- Authority
- US
- United States
- Prior art keywords
- air
- paint
- nozzle
- air cap
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
Definitions
- Objects of the invention are to provide an improved paint sprayer capable of incorporating a conventional compressedair paint-spraying gun, and in which even very heavy paint can be finely atomized, and yet which can be operated at low pressure and with low air consumption, and is simple, reliable, and inexpensive to make and use.
- the invention features an air cap adapted to be secured to a conventional compressed-air paint-spraying gun adjacent separate paint and air outlets therefrom, the air cap having an outlet and a chamber upstream of the outlet for receiving air and paint from the gun, and an atomizing nozzle mounted in a chamber upstream of the air cap outlet, the noule having a body defining an axial flow passage with a pair of coaxial radial holes thereinto spaced 180 apart intermediate the inlet and outlet ends of the passage, so that paint and air entering the air cap pass into the nozzle at its inlet end and through its radial holes, and the paint emerges from the air cap outlet atomized in a spray.
- the nozzle has a single outlet opening and the air cap has an end wall defining a single outlet opening aligned with, and of larger diameter than, the nozzle outlet opening; the nozzle has a flange at its outlet end and is mounted in an axial passage in the air cap with the flange against the air cap end wall, the axial passage of the air cap being of larger diameter than the nozzle body just upstream of the flange; and a perforated reflector is mounted at the upstream end of the axial passage of the air cap and is spaced from the nozzle.
- FIG. 1 is a view of a conventional paint sprayer modified to embody the invention, with the air cap partly broken away, some of the elements inside the air cap being shown in section;
- FIG. 2 is an exploded perspective view of some of the elements ofFIG. 1.
- Conventional paint sprayer head 10 with needle valve paint outlet 12 surrounded by air outlets 114, is mounted inside air cap 16, which is adapted to be secured to a conventional compressed-air-operated spray gun (not shown) by threaded retainer ring 18.
- Cap 16 has an indicating groove 17 (FIG. 2).
- Annular flange 20 of nozzle 22 is press fitted in the downstream end of axial bore 24 of cap 16, against flange 26 surrounding cap outlet 28 (outlet diameter 0.370 inch).
- Disc-shaped reflector 30 (outside diameter 0.496 inch) is press fitted in counterbore 32 of cap 116, between nozzle 22 and head 10.
- Reflector 30 has a central hole 33 (diameter 0.1 l 1 inch) midway between two holes 34 (each 0.144 in diameter having axes spaced 0.290 inch and coplanar with the axis of hole 32.
- Central hole 33 is concentric with an imaginary circle (diameter 0.136 inch) containing the centers of four equally spaced holes 36 (diameter 0.135 inch) arranged symmetrically about the line ofcenters of holes 33 and 34.
- Noule 22 has a cylindrical wall 40 (outside diameter 0.346 inch, inside diameter 0.260 inch) open at its outlet end across countersink 42, which is surrounded by flange 20.
- Axial inlet 44 (diameter 0.025 inch) is provided in upstream end wall 46 which is relieved to provide two openings 48 into the nozzle, each opening 43 having the shape of a segment of a circle.
- the centers of openings 48 are respectively spaced angularly 90 from the centers of holes 34.
- Two opposing coaxial radial holes 50 (each of diameter 0.073 inch) through wall 40 are 180 apart and tangent to countersink 42.
- the centers of inlet 44, openings 48, and holes 50 all lie in a single plane which is horizontal when the sprayer is oriented with groove 17 facing up (FIG. 2).
- Nozzle 22 atomizes the paint, which emerges from outlet 28 in a vertical, fan-shaped spray of very small droplets, due to the arrangement of holes 50 in a single opposing pair (although the spray would still be fan-shaped if there were e.g., a pair of additional radial holes respectively spaced from and smaller than holes 50).
- Reflector 30 minimizes backspraying of paint against head 10, improves atomization, and, by the arrangement of holes 34 spaced 90 respectively from holes 50 and openings 43, increases the width of the fan.
- paint flow is 23 oz./min.
- air flow is 15 c.f.m. at 60 p.s.i.g. Air consumption decreases as paint flow is increased.
- Paintspraying apparatus comprising an air cap adapted to be secured to a conventional compressed-air paint-spraying gun adjacent separate paint and air outlets therefrom, said air cap having a portion defining an outlet, and a chamber upstream of said air cap outlet for receiving air and paint from said separate outlets, and
- an atomizing nozzle mounted in said chamber adjacent said air cap outlet and comprising a body defining an axial flow passage having inlet and outlet ends, and
- said inlet end of said axial flow passage and said coaxial radial holes each being in communication with both said paint and air outlets, whereby said paint and air received in said chamber pass into said flow passage at said inlet end and through said radial holes, and emerge from said air cap outlet, said paint emerging atomized in a spray.
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Abstract
Description
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85534269A | 1969-09-04 | 1969-09-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3608832A true US3608832A (en) | 1971-09-28 |
Family
ID=25321000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US855342A Expired - Lifetime US3608832A (en) | 1969-09-04 | 1969-09-04 | Spray nozzle assembly operable at low pressure |
Country Status (1)
Country | Link |
---|---|
US (1) | US3608832A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3750947A (en) * | 1971-09-02 | 1973-08-07 | Energy Sciences Inc | Atomizing nozzle assembly |
US3784105A (en) * | 1971-06-29 | 1974-01-08 | Plessey Handel Investment Ag | Atomizing devices for liquid fuel |
US4258885A (en) * | 1979-03-23 | 1981-03-31 | Legeza Thomas B | Nozzle tip and method of manufacture |
US4294289A (en) * | 1980-01-24 | 1981-10-13 | American Standard Inc. | Flow control device |
US6125879A (en) * | 1997-08-20 | 2000-10-03 | Black & Decker Inc. | Release mechanism for a battery powered wheeled garden sprayer |
US6145711A (en) * | 1997-04-24 | 2000-11-14 | Black & Decker Inc. | Portable sprayer with power pump |
US7896539B2 (en) * | 2005-08-16 | 2011-03-01 | Bacoustics, Llc | Ultrasound apparatus and methods for mixing liquids and coating stents |
US10155232B2 (en) | 2011-04-19 | 2018-12-18 | Dlhbowles, Inc. | Cup-shaped fluidic circuit, nozzle assembly and method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2570190A (en) * | 1948-08-10 | 1951-10-09 | Edward D Ballard | Fog-producing attachment for fire-fighting nozzles |
US2737419A (en) * | 1951-02-02 | 1956-03-06 | West Disinfecting Co | Atomizing nozzle |
US2991015A (en) * | 1958-12-24 | 1961-07-04 | Pyles Ind Inc | Component mixture delivery gun |
US3330484A (en) * | 1965-12-06 | 1967-07-11 | Johnson Jay | Spraying device |
US3477647A (en) * | 1967-02-20 | 1969-11-11 | Gen Motors Corp | Fuel spray nozzle |
-
1969
- 1969-09-04 US US855342A patent/US3608832A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2570190A (en) * | 1948-08-10 | 1951-10-09 | Edward D Ballard | Fog-producing attachment for fire-fighting nozzles |
US2737419A (en) * | 1951-02-02 | 1956-03-06 | West Disinfecting Co | Atomizing nozzle |
US2991015A (en) * | 1958-12-24 | 1961-07-04 | Pyles Ind Inc | Component mixture delivery gun |
US3330484A (en) * | 1965-12-06 | 1967-07-11 | Johnson Jay | Spraying device |
US3477647A (en) * | 1967-02-20 | 1969-11-11 | Gen Motors Corp | Fuel spray nozzle |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3784105A (en) * | 1971-06-29 | 1974-01-08 | Plessey Handel Investment Ag | Atomizing devices for liquid fuel |
US3750947A (en) * | 1971-09-02 | 1973-08-07 | Energy Sciences Inc | Atomizing nozzle assembly |
US4258885A (en) * | 1979-03-23 | 1981-03-31 | Legeza Thomas B | Nozzle tip and method of manufacture |
US4294289A (en) * | 1980-01-24 | 1981-10-13 | American Standard Inc. | Flow control device |
US6145711A (en) * | 1997-04-24 | 2000-11-14 | Black & Decker Inc. | Portable sprayer with power pump |
US6125879A (en) * | 1997-08-20 | 2000-10-03 | Black & Decker Inc. | Release mechanism for a battery powered wheeled garden sprayer |
US7896539B2 (en) * | 2005-08-16 | 2011-03-01 | Bacoustics, Llc | Ultrasound apparatus and methods for mixing liquids and coating stents |
US10155232B2 (en) | 2011-04-19 | 2018-12-18 | Dlhbowles, Inc. | Cup-shaped fluidic circuit, nozzle assembly and method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GREEN, NORMAN E., STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARKER & HALE, A CA PARTNERSHIP;REEL/FRAME:004071/0640 Effective date: 19821112 Owner name: NATHANIEL HUGHES, STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARKER & HALE, A CA PARTNERSHIP;REEL/FRAME:004071/0640 Effective date: 19821112 Owner name: GREEN, NORMAN E. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PARKER & HALE, A CA PARTNERSHIP;REEL/FRAME:004071/0640 Effective date: 19821112 Owner name: NATHANIEL HUGHES Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PARKER & HALE, A CA PARTNERSHIP;REEL/FRAME:004071/0640 Effective date: 19821112 Owner name: VORTRAN CORPORATION, 315 SOUTH BEVERLY DRIVE, SUIT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HUGHES, NATHANIEL;GREEN NORMAN E.;REEL/FRAME:004066/0868 Effective date: 19821116 |