EP0381072A3 - High volume low pressure air spray gun - Google Patents

High volume low pressure air spray gun Download PDF

Info

Publication number
EP0381072A3
EP0381072A3 EP19900101583 EP90101583A EP0381072A3 EP 0381072 A3 EP0381072 A3 EP 0381072A3 EP 19900101583 EP19900101583 EP 19900101583 EP 90101583 A EP90101583 A EP 90101583A EP 0381072 A3 EP0381072 A3 EP 0381072A3
Authority
EP
European Patent Office
Prior art keywords
air
venturi
side port
gun
orifices
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.)
Granted
Application number
EP19900101583
Other languages
German (de)
French (fr)
Other versions
EP0381072A2 (en
EP0381072B1 (en
Inventor
Robert R. Mellette
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Binks Sames Corp
Original Assignee
Binks Sames Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Binks Sames Corp filed Critical Binks Sames Corp
Publication of EP0381072A2 publication Critical patent/EP0381072A2/en
Publication of EP0381072A3 publication Critical patent/EP0381072A3/en
Application granted granted Critical
Publication of EP0381072B1 publication Critical patent/EP0381072B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B05B7/0081—Apparatus supplied with low pressure gas, e.g. "hvlp"-guns; air supplied by a fan
    • 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
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • 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
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B05B7/0838—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter comprising a single means controlling simultaneously the flow rates of shaping and spraying gas jets
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • B05B7/241—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus the container being pressurised

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Nozzles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A high volume low pressure air spray gun (20) has an atomizing air orifice (76) for atomizing a stream of liquid coating material into a conical spray and opposed side port air orifices (88) for flattening the spray into a fan-shaped pattern. The gun receives air at pressures up to about 100 psi, and an air flow restriction in the form of a venturi (110) is in an air supply passage in the gun barrel. A valve stem (54) for controlling the flow rate of air to the side port orifices (88) extends through the venturi (110), and is configured to vary the venturi air flow area in response to changes in the flow rate of air to the side port orifices. When the valve stem (54) is positioned for maximum air flow to the side port orifices (88), it establishes a maximum air flow area through the venturi (110) , such that a high pressure of air at the gun air inlet, after flowing through the venturi, results in a high volume low pressure air flow at the atomizing and side port orifices (88). When the valve stem (54) is positioned to reduce air flow to the side port orifices (88), it correspondingly reduces the flow area through the venturi (110) to maintain the pressure of air at the atomizing orifice below a selected maximum value. The gun may carry a paint cup (124), in which case the cup is pressurized by air downstream from the venturi to prevent overpressurization of the cup.
EP90101583A 1989-02-03 1990-01-26 High volume low pressure air spray gun Expired - Lifetime EP0381072B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30651789A 1989-02-03 1989-02-03
US306517 1989-02-03

Publications (3)

Publication Number Publication Date
EP0381072A2 EP0381072A2 (en) 1990-08-08
EP0381072A3 true EP0381072A3 (en) 1991-07-31
EP0381072B1 EP0381072B1 (en) 1994-06-01

Family

ID=23185657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101583A Expired - Lifetime EP0381072B1 (en) 1989-02-03 1990-01-26 High volume low pressure air spray gun

Country Status (6)

Country Link
EP (1) EP0381072B1 (en)
JP (1) JPH0741181B2 (en)
AT (1) ATE106282T1 (en)
AU (1) AU618166B2 (en)
CA (1) CA2007963A1 (en)
DE (1) DE69009201T2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2061840A1 (en) * 1991-03-11 1992-09-12 D. William Medlock Pressure compensated hvlp spray gun
US5209405A (en) * 1991-04-19 1993-05-11 Ransburg Corporation Baffle for hvlp paint spray gun
GB9200605D0 (en) * 1992-01-13 1992-03-11 Itw Ltd Air valve
JPH07505568A (en) * 1992-01-13 1995-06-22 アイティーダブリュ リミティド Feedback air pressure detection device
US5671888A (en) * 1994-07-06 1997-09-30 Smith; Paul Spray gun with barrel-mounted venturi
DE59405399D1 (en) * 1994-10-13 1998-04-09 Sata Farbspritztechnik Air-operated paint spray gun
ES2149057B1 (en) * 1996-10-31 2001-05-01 Sagola Sa NEW LOW PRESSURE AIR GUN.
ES2151778B1 (en) * 1997-04-04 2001-07-01 Sagola Sa PERFECTED AIR LOW PRESSURE GUN.
JP2016131907A (en) * 2015-01-16 2016-07-25 アネスト岩田株式会社 Spray gun

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR819971A (en) * 1937-03-23 1937-10-29 Improvements to sprayers, especially paint guns
US2864649A (en) * 1956-11-26 1958-12-16 Cline Electric Mfg Co Spray gun
US4744518A (en) * 1986-11-12 1988-05-17 Can-Am Engineered Products, Inc. Fan adjustment for paint spray gun
US4817872A (en) * 1987-05-22 1989-04-04 Mattson Roy D Adjustable fluid spray gun
DE8911932U1 (en) * 1989-10-06 1990-01-18 Bersch & Fratscher GmbH, 8757 Karlstein Paint spray gun

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU504469B2 (en) * 1976-08-27 1979-10-18 Tricentrol Manufacturing Pty. Limited Spraygun
JPS634520Y2 (en) * 1981-06-10 1988-02-05
JPH039807Y2 (en) * 1985-01-10 1991-03-12
JPS6247418A (en) * 1985-08-28 1987-03-02 Nippon Kokan Kk <Nkk> Method for estimating oxygen concentration in molten steel
JPS638435U (en) * 1986-06-25 1988-01-20
GB8802130D0 (en) * 1988-02-01 1988-03-02 Devilbiss Co Spraygun

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR819971A (en) * 1937-03-23 1937-10-29 Improvements to sprayers, especially paint guns
US2864649A (en) * 1956-11-26 1958-12-16 Cline Electric Mfg Co Spray gun
US4744518A (en) * 1986-11-12 1988-05-17 Can-Am Engineered Products, Inc. Fan adjustment for paint spray gun
US4817872A (en) * 1987-05-22 1989-04-04 Mattson Roy D Adjustable fluid spray gun
DE8911932U1 (en) * 1989-10-06 1990-01-18 Bersch & Fratscher GmbH, 8757 Karlstein Paint spray gun

Also Published As

Publication number Publication date
DE69009201T2 (en) 1994-09-08
EP0381072A2 (en) 1990-08-08
JPH03178355A (en) 1991-08-02
AU618166B2 (en) 1991-12-12
CA2007963A1 (en) 1990-08-03
EP0381072B1 (en) 1994-06-01
JPH0741181B2 (en) 1995-05-10
DE69009201D1 (en) 1994-07-07
ATE106282T1 (en) 1994-06-15
AU4882590A (en) 1990-08-16

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