EP0283747A3 - Electrostatic spray gun - Google Patents

Electrostatic spray gun Download PDF

Info

Publication number
EP0283747A3
EP0283747A3 EP88102711A EP88102711A EP0283747A3 EP 0283747 A3 EP0283747 A3 EP 0283747A3 EP 88102711 A EP88102711 A EP 88102711A EP 88102711 A EP88102711 A EP 88102711A EP 0283747 A3 EP0283747 A3 EP 0283747A3
Authority
EP
European Patent Office
Prior art keywords
adapter
tips
orifice
electrodes
front surface
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
EP88102711A
Other languages
German (de)
Other versions
EP0283747A2 (en
EP0283747B1 (en
Inventor
Wolfgang Kuhn
Karsten Juterbock
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.)
Graco Verfahrenstechnik GmbH
Original Assignee
Kopperschmidt-Muller GmbH and Co KG
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 Kopperschmidt-Muller GmbH and Co KG filed Critical Kopperschmidt-Muller GmbH and Co KG
Priority to AT88102711T priority Critical patent/ATE67692T1/en
Publication of EP0283747A2 publication Critical patent/EP0283747A2/en
Publication of EP0283747A3 publication Critical patent/EP0283747A3/en
Application granted granted Critical
Publication of EP0283747B1 publication Critical patent/EP0283747B1/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
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The nozzle assembly of an electrostatic spray gun has an adapter which is made of an electrically insulating material and has a front surface facing in the direction of propagation of material issuing from the orifice of the nozzle. The adapter has a frustoconical extension which surrounds the orifice and whose external surface defines with the front surface of the adapter an annular space for the tips of electrodes which ionize air flowing toward the spray of material that issues from the orifice. The locations of the tips of electrodes (preferably very close to the front surface of the adapter) and the inclination of the external surface of the frustoconical extension determine the location of contact of ionized air with the spray. The tips of the electrodes are shielded from mechanical damage by being located in the annular space.
EP88102711A 1987-02-24 1988-02-24 Electrostatic spray gun Expired - Lifetime EP0283747B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88102711T ATE67692T1 (en) 1987-02-24 1988-02-24 ELECTROSTATIC SPRAY GUN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873705815 DE3705815A1 (en) 1987-02-24 1987-02-24 ELECTROSTATIC SPRAY GUN
DE3705815 1987-02-24

Publications (3)

Publication Number Publication Date
EP0283747A2 EP0283747A2 (en) 1988-09-28
EP0283747A3 true EP0283747A3 (en) 1990-01-10
EP0283747B1 EP0283747B1 (en) 1991-09-25

Family

ID=6321610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102711A Expired - Lifetime EP0283747B1 (en) 1987-02-24 1988-02-24 Electrostatic spray gun

Country Status (5)

Country Link
US (1) US4842203A (en)
EP (1) EP0283747B1 (en)
AT (1) ATE67692T1 (en)
DE (2) DE3705815A1 (en)
ES (1) ES2026216T3 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8802130D0 (en) * 1988-02-01 1988-03-02 Devilbiss Co Spraygun
DE3834983A1 (en) * 1988-10-14 1990-04-19 Kopperschmidt Mueller & Co SPRAY GUN
US5165605A (en) * 1989-03-30 1992-11-24 Iwata Air Compressor Mfg. Co., Ltd. Low pressure air atomizing spray gun
US5064123A (en) * 1990-05-10 1991-11-12 S. C. Johnson & Son, Inc. Insecticide dispensing apparatus
US5409162A (en) * 1993-08-09 1995-04-25 Sickles; James E. Induction spray charging apparatus
US5372309A (en) * 1993-11-15 1994-12-13 Ehle; Larry L. Airless nozzle using ambient air for improved atomization
US5873523A (en) * 1996-02-29 1999-02-23 Yale University Electrospray employing corona-assisted cone-jet mode
FR2776946B1 (en) * 1998-04-01 2000-05-26 Sames Sa SPRAY BOWL AND ELECTROSTATIC ROTARY SPOTLIGHT EQUIPPED WITH SUCH A BOWL
US6669112B2 (en) * 2001-04-11 2003-12-30 Illinois Tool Works, Inc. Air assisted spray system with an improved air cap
US6758418B2 (en) * 2001-08-07 2004-07-06 Nordson Corporation Swirl gun
JP2005527361A (en) * 2002-05-28 2005-09-15 ケルサン テクノロジーズ コープ． Spray nozzle assembly
US6874708B2 (en) * 2003-02-13 2005-04-05 Illinois Tool Works Inc. Automatic air-assisted manifold mounted gun
DE10315483A1 (en) * 2003-04-04 2004-11-04 Deutsche Amphibolin-Werke Von Robert Murjahn Stiftung & Co. Kg Paint based on at least one polymer dispersion and method of applying the paint
MX2007007950A (en) 2004-12-28 2007-10-08 Ransburg Ind Finishing Kk Electrostatic coater.
TWI432264B (en) * 2007-04-10 2014-04-01 Graco Minnesota Inc Reversible air-assisted airless spray tip
US8827183B2 (en) * 2007-12-05 2014-09-09 Wagner Spray Tech Corporation Dual aperture spray tip cup gun
CN104718028B (en) * 2012-10-01 2017-10-24 固瑞克明尼苏达有限公司 Spary tip component for electrostatic gun
CN113769670A (en) 2015-01-28 2021-12-10 福纳技术有限责任公司 Flavor encapsulation using electrostatic atomization

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764068A (en) * 1971-08-02 1973-10-09 Air Ind Method of protecting electrostatic spray nozzles from fouling
US3767116A (en) * 1972-03-23 1973-10-23 Elektro Ion Nozzle for electrostatic powder spraying apparatus
CH579951A5 (en) * 1975-04-11 1976-09-30 Gema Ag
DE2446022B2 (en) * 1974-09-26 1980-06-04 Esb Elektrostatische Spritz- Und Beflockungsgesellschaft G.F. Voehringer Gmbh, 7758 Meersburg Device for the electrostatic coating of objects with liquid or powder coating material

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659787A (en) * 1969-04-16 1972-05-02 Ransburg Electro Coating Corp Nozzle
US3583632A (en) * 1969-05-23 1971-06-08 Binks Mfg Co Electrostatic spray coating apparatus
US3907202A (en) * 1973-05-10 1975-09-23 Skm Sa Spray-gun apparatus for atomizing paint or similar liquids
GB1509740A (en) * 1974-11-14 1978-05-04 Skm Sa Spray gun for atomizing paint or other similar products
FR2354142A1 (en) * 1976-06-09 1978-01-06 Skm Sa SPRAY HEAD FOR ELECTROSTATIC SPRAYING APPLIANCE OF PAINT OR ANALOGUE LIQUID
DE2713328A1 (en) * 1977-03-25 1978-10-05 Gema Ag DEVICE FOR ELECTROSTATICALLY APPLICATION OF COATING MATERIAL TO OBJECTS
GB1600631A (en) * 1978-01-10 1981-10-21 Binks Bullows Ltd Spray nozzle
GB2020200B (en) * 1978-03-08 1982-09-15 Air Ind Electrostatic spraying
US4258885A (en) * 1979-03-23 1981-03-31 Legeza Thomas B Nozzle tip and method of manufacture
US4497447A (en) * 1983-05-23 1985-02-05 Graco, Inc. Energy damping device for spray gun
DE3505618A1 (en) * 1985-02-19 1986-08-21 Kopperschmidt-Mueller Gmbh & Co Kg, 4800 Bielefeld METHOD FOR COATING OBJECTS USING A SPRAYER, AND DEVICE FOR CARRYING OUT THIS METHOD

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764068A (en) * 1971-08-02 1973-10-09 Air Ind Method of protecting electrostatic spray nozzles from fouling
US3767116A (en) * 1972-03-23 1973-10-23 Elektro Ion Nozzle for electrostatic powder spraying apparatus
DE2446022B2 (en) * 1974-09-26 1980-06-04 Esb Elektrostatische Spritz- Und Beflockungsgesellschaft G.F. Voehringer Gmbh, 7758 Meersburg Device for the electrostatic coating of objects with liquid or powder coating material
CH579951A5 (en) * 1975-04-11 1976-09-30 Gema Ag

Also Published As

Publication number Publication date
EP0283747A2 (en) 1988-09-28
DE3705815C2 (en) 1990-03-29
ATE67692T1 (en) 1991-10-15
US4842203A (en) 1989-06-27
EP0283747B1 (en) 1991-09-25
DE3705815A1 (en) 1988-09-01
ES2026216T3 (en) 1992-04-16
DE3865053D1 (en) 1991-10-31

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