EP2392406A1 - Buse de pulvérisation pour la vaporisation d'un liquide sous pression - Google Patents

Buse de pulvérisation pour la vaporisation d'un liquide sous pression Download PDF

Info

Publication number
EP2392406A1
EP2392406A1 EP10005680A EP10005680A EP2392406A1 EP 2392406 A1 EP2392406 A1 EP 2392406A1 EP 10005680 A EP10005680 A EP 10005680A EP 10005680 A EP10005680 A EP 10005680A EP 2392406 A1 EP2392406 A1 EP 2392406A1
Authority
EP
European Patent Office
Prior art keywords
spray nozzle
wall
sputtering chamber
recesses
elevations
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.)
Withdrawn
Application number
EP10005680A
Other languages
German (de)
English (en)
Inventor
Eva-Maria Fengler
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.)
Pfau Cnc- und Duesentechnik GmbH
Original Assignee
Pfau Cnc- und Duesentechnik GmbH
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 Pfau Cnc- und Duesentechnik GmbH filed Critical Pfau Cnc- und Duesentechnik GmbH
Priority to EP10005680A priority Critical patent/EP2392406A1/fr
Publication of EP2392406A1 publication Critical patent/EP2392406A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B05B1/34—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

Definitions

  • the present invention relates to a spray nozzle for atomizing a pressurized fluid according to the preamble of patent claim 1.
  • Spray nozzles and the spraying devices equipped therewith have the task of atomizing the sprayed material into fine droplets and directing it to the object to be coated.
  • spraying serve sometimes viscous liquids such as paints and varnishes, wherein the sprayed is applied as evenly as possible to the surface to be treated.
  • various solutions are known.
  • pre-atomizing nozzles are arranged in front of the spraying nozzles in order to cause turbulence in the atomizing chamber of the spraying nozzle.
  • Vorzerstäuberdüsen are consuming in the production and therefore expensive. In addition, they represent another error-prone component.
  • Such a device is described with a pre-atomizing nozzle for atomising a pressurized liquid in a spray nozzle, wherein the liquid enters from a first nozzle into a diffuser into which a droplet preparation takes place due to the relaxation occurring at the exit from the nozzle and the resulting liquid decomposition ,
  • the liquid is transferred from a first nozzle into a second nozzle, to which the compressed air is supplied.
  • a spray device in which for the atomization of the injection molding a rotating atomizing element and a drive device for driving the atomizing element are provided for rotation.
  • a rotating atomizing element For rotation of the sputtering element, it is connected to an elastic coupling element comprising at least one engaging ring capable of radial expansion under the action of a centrifugal force.
  • spray devices result in rapid wear of the components due to the rapid rotational movements.
  • a spray nozzle for the atomization of spray material is described, wherein the nozzle in the sprayed material outlet hole has a clamped against the end face of the nozzle body replaceable attachment plate. It is provided that in the perforation of the attachment plate as Spritzgutaustrittsloch an extension is formed, in which a swirl cylinder is used, are incorporated on the lateral surface of a helix extending grooves. This is awkward.
  • the spray nozzle according to the invention is used to atomize a pressurized liquid, such as paints and varnishes.
  • a pressurized liquid such as paints and varnishes.
  • liquid is used for any sprayable material that can be applied to a surface, regardless of the respective degree of viscosity. In this respect, the only thing that matters with sprayed material is that the liquid can be sprayed.
  • the spray nozzle according to the invention comprises a nozzle core with a spray chamber formed therein, which may be formed either conical or cylindrical.
  • a spray chamber formed therein, which may be formed either conical or cylindrical.
  • the nozzle core generically comprises an outlet gap for the sprayed material and a jacket which encloses the central atomization chamber.
  • the sputtering chamber is bounded by an inner wall.
  • depressions and / or elevations with surfaces or bevels are formed in the inner wall of the atomization chamber, which effect a deflection and / or turbulence of the liquid jet in the atomization chamber.
  • the liquid particles impinging on the surfaces of the depressions and / or elevations are thrown back from the surface upon impact, so that they collide with the oncoming droplets of the liquid jet entering the chamber and atomise them.
  • the liquid droplets burst into smaller droplets.
  • the aim of the invention is therefore to provide as many differently angled reflection surfaces for the liquid jet or the individual liquid drops of the injection material on the inner wall of the sputtering chamber.
  • This is inventively achieved either with recesses, which are incorporated in the inner wall of the sputtering chamber, or by elevations, which protrude from the surface of the inner wall.
  • These have in common that they have reflection surfaces at which the liquid drops are hurled after the impact back into the Zerstäubungshunt (either as a bounced large drop or as burst smaller droplets). These collide with the subsequent liquid jet and are entrained by this.
  • the recesses and / or elevations have either a circular, elliptical, concave and / or convex geometry.
  • the geometry of the depressions and / or elevations different Zerstäubungsgrade be achieved, so that the choice of the selected surfaces influences the resulting spray pattern and can be adjusted if necessary. It may well be provided that both recesses and elevations are formed simultaneously as the inner geometry of the sputtering chamber.
  • the arrangement of several recesses and / or elevations within the sputtering chamber has an influence on the degree of sputtering of the injection molding material, wherein the depressions and / or elevations can be arranged either selectively, annularly and / or spirally in the inner wall of the sputtering chamber.
  • the depressions and / or elevations consist of a plurality of symmetrically arranged surfaces or bevels, on which the liquid jet is deflected.
  • the depressions and / or elevations consist of individual steps which are incorporated into the inner wall of the sputtering chamber in a staircase manner.
  • the individual stages are incorporated into a kind of spiral staircase in the inner wall of the sputtering chamber.
  • each step body of a step is formed by inclined surfaces, which may have a different geometry.
  • polygonal for example square or rectangular
  • circular, elliptical, concave and / or convex geometries are suitable, which cause a deflection of the liquid jet in the sputtering chamber via their surface.
  • the steps in the inner wall in a spiral shape.
  • the inclined surfaces of the / the stage body with different angles in the Zerstäubungshunt.
  • the number and width of the steps depending on the viscosity of the liquid and / or the type of the injection molding material can be selected and can be adjusted if necessary.
  • spray nozzles with different internal geometries be selected to cause the required for this purpose the same co-injection image.
  • a groove extending spirally in the inner wall is designed as a recess as a reflection surface.
  • a spray nozzle according to the invention for atomizing a pressurized liquid is shown in plan view, which comprises a nozzle core 10 with an atomization chamber 12 formed therein for the atomization of the liquid and an outlet gap 16 for the sprayed material.
  • the nozzle core 10 is enclosed by a jacket 17.
  • the sputtering chamber 12 is bounded by an inner wall 18.
  • In the inner wall 18 of the sputtering chamber 12 optionally symmetrically or asymmetrically arranged recesses and / or elevations 11 are formed, which cause a deflection and / or swirling of the liquid jet in the sputtering chamber 12.
  • the recesses and / or elevations are formed as individual steps 14, which are incorporated into the inner wall 18 of the sputtering chamber 12 in a staircase manner.
  • the individual stages 14 run helically in the inner wall 18 of the sputtering chamber 12.
  • the individual stages 14 have rear step surfaces 15, wherein the individual levels of the steps 14 of oblique surfaces 22, 24 (see. FIG. 3 and FIG. 4 ) are separated from each other.
  • Fig. 2 it can be seen how a liquid jet in the sputtering chamber 12 is deflected at the individual surfaces of the steps 14 and / or swirled. Above the discharge gap 16 arranged in the nozzle head 13, the sprayed material, swirled to the smallest droplets, is directed outwards onto the surface to be treated.
  • the arrangement of individual surfaces, their angling and geometry of the stages 14 different reflection surfaces for the liquid droplets of the liquid jet of the injection material are created, which rebound at the surface and disintegrate with the liquid flow to smaller droplets. In a rebound, the liquid droplets are thrown back into the sputtering chamber 12 and thereby collide with the over the liquid jet in the sputtering chamber 12 entering new liquid droplets.
  • Fig. 3 a sectional view along the section line III of the inner geometry of the inner wall 18 is shown.
  • the step body of a step 14 is bounded by an inclined surface 22.
  • Fig. 4 is another sectional view along the section line to recognize IV.
  • the individual stages 14 are clearly visible.
  • Each individual step body of a step 14 consists of a step wall 15 and a plurality of stepwise inclined surfaces 24 arranged one above the other 3 and 4
  • the inclined surfaces 22, 24 and the step surface of a step 14 shown may have a different geometry, for example, the geometry may be polygonal, circular, elliptical, concave and / or convex.
  • Fig. 5 For example, some possible geometries of step sole 14 are shown along section line V. Square geometries 14a, circular geometries 14b, elliptical geometries 14c or rectangular geometries 14d are possible.
  • the inclined surfaces 22, 24 may be formed either as a flat surface or diffracted. In the illustrated embodiment, concave and convex geometries of the inclined surfaces 22, 24 are shown. As a result, different rebound angles of the liquid particles occurring in these surfaces in the sputtering chamber 12 are effected.
  • Fig. 6 an embodiment of the spray nozzle according to the invention is shown in an isometric view, in which the depressions and / or elevations according to the invention are incorporated as steps 14 in the inner wall 18 of the sputtering chamber 12.
  • a further embodiment is shown, in which as a reflection surface a spiral extending in the inner wall 18 groove is formed as a recess 11.
EP10005680A 2010-06-01 2010-06-01 Buse de pulvérisation pour la vaporisation d'un liquide sous pression Withdrawn EP2392406A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10005680A EP2392406A1 (fr) 2010-06-01 2010-06-01 Buse de pulvérisation pour la vaporisation d'un liquide sous pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10005680A EP2392406A1 (fr) 2010-06-01 2010-06-01 Buse de pulvérisation pour la vaporisation d'un liquide sous pression

Publications (1)

Publication Number Publication Date
EP2392406A1 true EP2392406A1 (fr) 2011-12-07

Family

ID=42797323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10005680A Withdrawn EP2392406A1 (fr) 2010-06-01 2010-06-01 Buse de pulvérisation pour la vaporisation d'un liquide sous pression

Country Status (1)

Country Link
EP (1) EP2392406A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105961177A (zh) * 2016-07-06 2016-09-28 郑州海力特农林科技有限公司 高压细水雾云雾培喷头
US20190170424A1 (en) * 2017-12-01 2019-06-06 Shanghai Ocean University Jet nozzle structure of impact-type freezer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH190787A (de) 1935-07-26 1937-05-15 Bosch Robert Ag Spritzdüse für die Zerstäubung von Spritzgut, insbesondere von Farbe.
US2110409A (en) * 1937-05-19 1938-03-08 George W Veach Spray nozzle
US4598862A (en) * 1983-05-31 1986-07-08 The Dow Chemical Company Foam generating device and process
DE69306975T2 (de) 1992-12-01 1997-07-24 Sames Sa Farbspritzvorrichtung mit rotierendem zerstäubungselement und werkzeug zum montieren und demontieren dieses elements
US5711484A (en) * 1993-09-14 1998-01-27 Minnesota Mining And Manufacturing Company Dispensing tube for directing the dispensing of fluids
WO2001089707A1 (fr) * 2000-05-22 2001-11-29 Shurflo Pump Manufacturing Company, Inc. Appareil distributeur de condiment a buse et procede
DE102005004341B4 (de) 2005-01-25 2007-03-22 Karasto Armaturenfabrik Oehler Gmbh Vorrichtung zur Zerstäubung einer unter Druck stehenden Flüssigkeit mittels Druckluft

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH190787A (de) 1935-07-26 1937-05-15 Bosch Robert Ag Spritzdüse für die Zerstäubung von Spritzgut, insbesondere von Farbe.
US2110409A (en) * 1937-05-19 1938-03-08 George W Veach Spray nozzle
US4598862A (en) * 1983-05-31 1986-07-08 The Dow Chemical Company Foam generating device and process
DE69306975T2 (de) 1992-12-01 1997-07-24 Sames Sa Farbspritzvorrichtung mit rotierendem zerstäubungselement und werkzeug zum montieren und demontieren dieses elements
US5711484A (en) * 1993-09-14 1998-01-27 Minnesota Mining And Manufacturing Company Dispensing tube for directing the dispensing of fluids
WO2001089707A1 (fr) * 2000-05-22 2001-11-29 Shurflo Pump Manufacturing Company, Inc. Appareil distributeur de condiment a buse et procede
DE102005004341B4 (de) 2005-01-25 2007-03-22 Karasto Armaturenfabrik Oehler Gmbh Vorrichtung zur Zerstäubung einer unter Druck stehenden Flüssigkeit mittels Druckluft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105961177A (zh) * 2016-07-06 2016-09-28 郑州海力特农林科技有限公司 高压细水雾云雾培喷头
US20190170424A1 (en) * 2017-12-01 2019-06-06 Shanghai Ocean University Jet nozzle structure of impact-type freezer

Similar Documents

Publication Publication Date Title
EP2576079B1 (fr) Tête de buse pour une pistolet de pulvérisation
DE102007006547B4 (de) Lenkluftring und entsprechendes Beschichtungsverfahren
EP1915216B1 (fr) Tête de mélange
DE102009019255B4 (de) Sprühdüsenanordnung zum Entzundern
EP1886731B1 (fr) Agencement de buse de pulvérisation
DE112006002295T5 (de) Sprühdüsenanordnung zur Atomisierung mittels externer Luftmischung
EP2879805B1 (fr) Ensemble buse
DE202010012449U1 (de) Düsenanordnung für eine Spritzpistole, insbesondere für eine Farbspritzpistole
DE102015006484A1 (de) Düsenanordnung für eine Spritzpistole, insbesondere Farbspritzpistole und Spritzpistole, insbesondere Farbspritzpistole
DE10103221A1 (de) Luftunterstützte Düse
DE102008027997A1 (de) Universalzerstäuber
EP2099570A1 (fr) Anneau pour guider l'air comprenant une cavité annulaire et cloche correspondante
EP3042724B1 (fr) Procédé de génération d'un jet diffusé et buse à deux composants
EP3204167A1 (fr) Buse bimatière
EP1470864B1 (fr) Buse de pulvérisation à deux fluides
EP3088087B1 (fr) Buse de pulverisation et procede de production de cones de pulverisation non arrondis
EP2392406A1 (fr) Buse de pulvérisation pour la vaporisation d'un liquide sous pression
WO2015172996A1 (fr) Dispositif pour focaliser un milieu visqueux distribué à partir d'une ouverture de distribution d'un dispositif de distribution d'un dispositif à jet, système à jet et installations de production
EP1842598B1 (fr) Buse d'éjection d'un agent de grenaillage
DE102008057295A1 (de) Ringspaltdüse
EP1072318B1 (fr) Tête pour dispositif de pulvérisation électrostatique rotatif
DE19918120A1 (de) Zerstäuberdüse
DE202010007454U1 (de) Spritzdüse zur Zerstäubung einer unter Druck stehenden Flüssigkeit
DE3505619C2 (de) Verfahren zum Beschichten von Gegenständen und Vorrichtung zur Durchführung des Verfahrens
DE202015003664U1 (de) Düsenanordnung für eine Spritzpistole, insbesondere Farbspritzpistole und Spritzpistole, insbesondere Farbspritzpistole

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME RS

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120609