EP0577681B1 - Schlitzdüse zum abgeben von flüssigkeiten - Google Patents

Schlitzdüse zum abgeben von flüssigkeiten Download PDF

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Publication number
EP0577681B1
EP0577681B1 EP92907516A EP92907516A EP0577681B1 EP 0577681 B1 EP0577681 B1 EP 0577681B1 EP 92907516 A EP92907516 A EP 92907516A EP 92907516 A EP92907516 A EP 92907516A EP 0577681 B1 EP0577681 B1 EP 0577681B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
slot
elements
carrying element
another
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
Application number
EP92907516A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0577681A1 (de
Inventor
Herbert Hüttlin
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.)
Huettlin GmbH
Original Assignee
Huettlin Coating Technik 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 Huettlin Coating Technik GmbH filed Critical Huettlin Coating Technik GmbH
Publication of EP0577681A1 publication Critical patent/EP0577681A1/de
Application granted granted Critical
Publication of EP0577681B1 publication Critical patent/EP0577681B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B7/025—Nozzles having elongated outlets, e.g. slots, for the material to be sprayed

Definitions

  • a slot nozzle of this type is known, which as a linear spray device for cooling z. B. serving coming from a hot rolling mill.
  • the nozzle bodies are spaced from one another so that they form an open outlet gap.
  • a linear spray device is also known from document DE-C-24 19 81.
  • a hollow body is arranged within a housing, which is surrounded by compressed air and yourself with a liquid, e.g. B. color.
  • Compressed air and liquid flow through a plate with holes before they exit together through a multi-jet nozzle.
  • This consists of a central plate, on each side of which there is a plate provided with channels.
  • a liquid outlet between outlet surfaces formed by the plates is not provided, because the liquid introduced into the device should be atomized before the plate provided with holes; the mixture of substances emerging between the plates is therefore not a liquid, but a mist.
  • Another slot nozzle is known from document EP-A-0 041 729, one of whose nozzle bodies is a rigid plate which is screwed together with the support body also formed by a plate and covers a groove which is incorporated into the support body and serves as a supply channel.
  • the second nozzle body is formed by a flexible strip which is clamped in a further groove of the support body and is provided with a plurality of milled grooves and ribs which remain in between in the region in which it rests on the rigid nozzle body.
  • the ribs are preferably much narrower than the grooves, and their cross-section is longer in the longitudinal direction of the support body than transverse to it.
  • the nozzle outflow conditions are to be influenced in accordance with the properties of the medium to be dispensed by the slot nozzle by different dimensions of the ribs and grooves.
  • the ribs and grooves can be arranged transversely or obliquely to the longitudinal direction of the slot nozzle and can end before the actual nozzle outlet cross section, so that the partial streams separated from one another by the ribs of the escaping medium unite behind the ribs to form an even film. In this way, a coherent gas or liquid curtain is to be achieved. However, experience has shown that this can only be achieved with liquids whose surface tension is low, so that the partial flows flowing through the individual grooves have a strong willingness to unite behind the ribs.
  • the invention has for its object to develop a slit nozzle for dispensing liquids such that it is suitable for generating a uniform spray curtain formed by a liquid and a gas.
  • the object is achieved, starting from a slot nozzle of the type described in the introduction, in that the nozzle bodies have adjoining outlet surfaces and the outlet surface of at least one of the nozzle bodies is roughened in such a way that it has a roughness depth of 0.015 to 0.250 mm, as a result of which liquid emerges between the adjoining outlet surfaces is possible.
  • the roughened exit surface can be paired with a completely smooth exit surface.
  • Such a pairing of a roughened with a smooth outlet surface and with a gas outlet slot is particularly suitable for spraying homogeneous solutions.
  • the nozzle bodies are preferably held against one another with elastic pretension. This creates the possibility of cleaning the outlet gap from time to time with a liquid which is pressed through it with increased pressure which forces the nozzle bodies apart.
  • the pretension can be generated, for example, with elastic guide plates, each of which connects one of the nozzle bodies to the support body.
  • the support body itself is also easy to clean, it can be divided into two support body halves, each of which carries a nozzle body.
  • At least one nozzle strip is connected to the supporting body by an elastic guide plate.
  • a guide plate can oscillate depending on the pressure of the gas flowing along it, so that the distance between the associated nozzle bar and the adjacent nozzle body changes periodically, which creates a pulsating gas flow, which is desirable in some cases.
  • a particularly advantageous development of the invention consists in that a lamellar third nozzle body is arranged between two smooth nozzle bodies, each of which has a roughened exit surface on its two sides facing a smooth nozzle body.
  • Such a lamellar nozzle body can be produced at low cost and easily replaced.
  • the lamellar third nozzle body is expediently clamped between two halves of the support body and divides the supply channel for liquids into two halves. This creates the possibility of feeding the two halves of the supply channel with different liquids, for example with two components that react chemically with one another and therefore may only come together outside the slot nozzle.
  • the components leave the slot nozzle according to the invention separately from one another on each side of the lamellar nozzle body and then mix as a mist, which is then, for example, on one to be coated Area. In this way, z. B. Produce coatings with two-component paints, adhesives or the like with little effort.
  • the roughening of one or more exit surfaces is preferably carried out according to known methods of non-cutting deformation, for example by electrical discharge machining.
  • processes have proven to be particularly suitable in which the surface to be roughened is bombarded with small particles such as grains of sand.
  • the slot nozzle shown in FIGS. 1 to 4 is elongated in a straight line and symmetrical with respect to a plane vertical in FIGS. 1 and 2.
  • the slot nozzle includes an elongated support body 10 with a supply channel 12 for liquids, from which cross bores 14 lead upwards, and a supply channel 16 for compressed gas, from which oblique bores 18 lead upwards.
  • the support body 10 is designed symmetrically and divided into two identical support body halves, which are held together by screws 20 and can be easily disassembled after loosening these screws.
  • an inner guide plate 22 is fastened in a height-adjustable manner by means of screws 24 and clamping strips 26.
  • the terminal strips 26 have grooves 28, so that a compressed gas supplied through the supply channel 16 and emerging upward through the oblique bores 18 can flow upward through the terminal strips 26.
  • the two inner guide plates 22 are bent over above the areas in which they are fastened to the supporting body 10 in such a way that they converge upwards, and have a further bent edge, so that their upper edge areas are parallel to one another.
  • a nozzle body 30 is fastened to the upper edge region of each of the inner guide plates 22 and, as shown, is elongated in a straight line, but can also be annular or otherwise curved.
  • the two nozzle bodies 30 have outlet surfaces 32 which face one another and are vertical according to FIG. 1, which together form an exit gap A in the plane of symmetry B of the slot nozzle for generating a spray curtain C.
  • One of the two exit surfaces 32 has a profile structure which is formed by sandblasting.
  • the opposite exit surface 32 is smooth.
  • the two inner guide plates 22 are made of elastic material, preferably stainless steel sheet, and are shaped and arranged in such a way that they hold the two outlet surfaces 32 against one another under normal operating conditions with a certain prestress.
  • the surfaces of the support body 10 to which the inner guide plates 22 are attached diverge upwards.
  • the prestressing acting between the exit surfaces 32 can therefore be increased or decreased as desired by adjusting the inner guide plates 22 downwards or upwards.
  • the setting of the guide plates 22 can be read off on scales 34 (FIG. 3).
  • the supporting body 10 is enclosed in its lower region by an enveloping body 36 which is U-shaped in cross section and which, for example, can be an extruded profile made of metal or plastic and has two thickened upper edge regions.
  • a pair of middle guide plates 38 are fastened to these edge regions of the enveloping body 36, which continue the profile of the enveloping body 36 upwards, in that they are bent in a manner similar to the inner guide plates 22.
  • the middle guide plates 38 also consist of elastic material, preferably stainless steel sheet, and form with their upper edges a pair of upwardly converging nozzle strips 40, between which the nozzle bodies 30 are arranged.
  • Each of the two nozzle strips 40 forms, together with the nozzle body 30 adjacent to it, a gas outlet slot D, the width of which extends over the entire length is the same.
  • the width of the two gas outlet slots D is greater the further the inner guide plates 22 are placed downward, and vice versa.
  • the enveloping body 36 has in its two thickened upper edge regions each an outwardly open, arcuate groove 42, into which a correspondingly bent lower edge region is inserted in each case an outer guide plate 44.
  • the two outer guide plates 44 are folded in a manner corresponding to the inner guide plates 22 and middle guide plates 38 and each have a row of holes 46 near their edge engaging in the arcuate groove 42 for upward flowing low-pressure gas and, immediately above, one projecting outwards Longitudinal rib 48.
  • a U-shaped trough 50 is latched into the two longitudinal ribs 48 and for this purpose each has a groove near its upper edges.
  • the tub 50 can be folded from sheet metal or made as an extruded profile made of metal or plastic.
  • the described components of the slot nozzle are closed at one end, which is shown on the left in FIGS. 3 and 4, by a head piece 52 and held together.
  • the head piece 52 is fastened to the supporting body 10 with screws 54 and has a connection bore 56 for the liquid to be sprayed which is connected to the supply channel 12 and a connection bore 58 for compressed gas which is connected to the supply channel 16 and which preferably has a pressure of the order of magnitude 0.5 to 4.0 bar is supplied.
  • the opposite end of the nozzle arrangement is closed off by a simple plate-shaped end piece 60.
  • the tub 50 has at least one connection piece 62 for gas at the bottom, which if necessary with a low pressure of preferably less than 0.5 bar is supplied.
  • This low-pressure gas flows upwards between the envelope body 36 and the trough 50, further through the holes 46 into the spaces between the middle baffle plates and the outer baffle plates, in order finally to form a gas screen outside the gas outlet slots.
  • the spray curtain C can be prevented from process air in a fluidized bed apparatus or the like. to be dried prematurely.
  • a third nozzle body 31 is arranged between the two nozzle bodies 30, which is formed by a thin, flat lamella, for example made of corrosion-resistant steel sheet.
  • the third nozzle body 31 has an exit surface 32 roughened by sandblasting on both sides.
  • the two nozzle bodies 30 each have a smooth, flat exit surface, which bears against the adjacent exit surface 32 of the third nozzle body 31 with a prestress.
  • the two nozzle bodies 30 are each formed in one piece with one half of the support body 10.
  • the third nozzle body 31 is clamped between the support body halves in such a way that it divides the supply channel 12 for liquids into two equal halves.
  • Each of these channel halves can be connected to its own liquid source.
  • Two or more pins 66 are attached to one of the support body halves and extend at right angles to the plane of symmetry of the slot nozzle to the other support body half.
  • the lamellar third nozzle body 31 is plugged onto these pins 66 and has holes for this purpose, so that it is held by the pins 66 so that it cannot be moved and is nevertheless easy to replace.

Landscapes

  • Nozzles (AREA)
EP92907516A 1991-03-27 1992-03-27 Schlitzdüse zum abgeben von flüssigkeiten Expired - Lifetime EP0577681B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4110127A DE4110127A1 (de) 1991-03-27 1991-03-27 Duesenbaugruppe zum verspruehen von fluessigkeiten
DE4110127 1991-03-27
PCT/EP1992/000683 WO1992017280A1 (de) 1991-03-27 1992-03-27 Schlitzdüse zum abgeben von flüssigkeiten

Publications (2)

Publication Number Publication Date
EP0577681A1 EP0577681A1 (de) 1994-01-12
EP0577681B1 true EP0577681B1 (de) 1995-02-08

Family

ID=6428361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92907516A Expired - Lifetime EP0577681B1 (de) 1991-03-27 1992-03-27 Schlitzdüse zum abgeben von flüssigkeiten

Country Status (7)

Country Link
US (1) US5427317A (enrdf_load_stackoverflow)
EP (1) EP0577681B1 (enrdf_load_stackoverflow)
JP (1) JPH06506143A (enrdf_load_stackoverflow)
DE (2) DE4110127A1 (enrdf_load_stackoverflow)
DK (1) DK0577681T3 (enrdf_load_stackoverflow)
ES (1) ES2071499T3 (enrdf_load_stackoverflow)
WO (1) WO1992017280A1 (enrdf_load_stackoverflow)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5845846A (en) * 1969-12-17 1998-12-08 Fujisaki Electric Co., Ltd. Spraying nozzle and method for ejecting liquid as fine particles
US5680991A (en) * 1992-07-29 1997-10-28 Truitt; Archie Arthur Air distribution system and sprayer incorporating an air distribution system
FR2695842B1 (fr) * 1992-09-18 1994-12-30 Bertin & Cie Appareil de pulvérisation linéaire d'un liquide, notamment de refroidissement.
JP3834737B2 (ja) * 1995-05-18 2006-10-18 ノードソン株式会社 液体又は加熱溶融体のスプレイ方法
JP3257340B2 (ja) * 1995-05-24 2002-02-18 松下電器産業株式会社 液体塗布方法、液体塗布装置およびスリットノズル
US5713519A (en) * 1995-07-21 1998-02-03 Minnesota Mining And Manufacturing Company Fluid spraying system
EP0847856A3 (de) * 1996-12-10 1998-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zur Bestäubung von Bogen
GB9712400D0 (en) * 1997-06-16 1997-08-13 Trikon Equip Ltd Shower head
DE19749072C1 (de) 1997-11-06 1999-06-10 Herbert Huettlin Mehrstoffzerstäuberdüse
US6012647A (en) * 1997-12-01 2000-01-11 3M Innovative Properties Company Apparatus and method of atomizing and vaporizing
US6056213A (en) * 1998-01-30 2000-05-02 3M Innovative Properties Company Modular system for atomizing a liquid
US6036116A (en) * 1998-04-16 2000-03-14 Coltec Industries Inc Fluid atomizing fan spray nozzle
US6076748A (en) * 1998-05-04 2000-06-20 Resch; Darrel R. Odor control atomizer utilizing ozone and water
DE10059406B4 (de) * 2000-11-30 2007-04-26 Krautzberger Gmbh Spritzvorrichtung
DE10126882C2 (de) * 2001-04-18 2003-12-11 Advanced Photonics Tech Ag Fluidstromformer
DE60232174D1 (de) * 2001-12-03 2009-06-10 Univ California Verfahren und vorrichtung zur kanalabdichtung unter verwendung einer verstopfungssicheren einführbaren einspritzvorrichtung
ES2333423T3 (es) * 2003-01-24 2010-02-22 Turbotect Ltd. Procedimiento y tobera de inyeccion para mezclar un flujo de gas con gotitas de liquido.
DE10345342A1 (de) * 2003-09-19 2005-04-28 Engelhard Arzneimittel Gmbh Verfahren zur Herstellung eines lagerstabilen Extraktes aus Efeublättern, sowie ein nach diesem Verfahren hergestellter Extrakt
US8820662B2 (en) * 2005-12-22 2014-09-02 Donovan B. Yeates Nozzle and nozzle holder for an aerosol generator
WO2009041582A1 (ja) * 2007-09-28 2009-04-02 Baldwin-Japan Ltd. スプレーダンプナ
US20100120350A1 (en) * 2008-11-09 2010-05-13 Illinois Tool Works Inc. Air knife
DE102009017453A1 (de) * 2009-04-07 2010-11-11 Hüttlin, Herbert, Dr. h.c. Spaltdüse zum Versprühen einer Flüssigkeit
JP2010246670A (ja) * 2009-04-14 2010-11-04 Canon Inc 液体吐出ヘッド及び吸入装置
US8814067B2 (en) * 2011-04-28 2014-08-26 Maxum Llc Optimized air delivery apparatus
JP6035738B2 (ja) * 2011-12-27 2016-11-30 オムロンヘルスケア株式会社 ネブライザおよびネブライザキット
EP2832451A4 (en) * 2012-03-28 2015-12-23 Fujisaki Electric Co Ltd LIQUID EJECTION APPARATUS AND LIQUID EJECTION METHOD
US10401086B2 (en) 2013-01-15 2019-09-03 Illinois Tool Works Inc. Air manifold for drying a container
FR3009687B1 (fr) * 2013-08-13 2017-05-12 Sames Tech Pulverisateur d'un produit lubrifiant et installation de lubrification comprenant ce pulverisateur
JP6320824B2 (ja) * 2014-03-31 2018-05-09 株式会社東芝 ガス供給管、およびガス処理装置
KR101817254B1 (ko) * 2016-09-23 2018-01-10 주식회사 동원파츠 가스 디스트리뷰터 및 이의 제조방법
CN107684648B (zh) * 2017-10-23 2018-12-18 南京市儿童医院 一种用于雾化吸痰护理的婴幼儿面罩系统
US11161128B2 (en) 2017-11-14 2021-11-02 General Electric Company Spray nozzle device for delivering a restorative coating through a hole in a case of a turbine engine
US11534780B2 (en) 2017-11-14 2022-12-27 General Electric Company Spray nozzle device for delivering a restorative coating through a hole in a case of a turbine engine
DE102019205741A1 (de) * 2019-04-18 2020-10-22 Glatt Gesellschaft Mit Beschränkter Haftung Selbstreinigende Düse
DE102023119415A1 (de) * 2023-07-21 2025-01-23 Alfred Kärcher SE & Co. KG Flachstrahldüsenanordnung

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DE254236C (enrdf_load_stackoverflow) 1910-05-24
JPS522408B2 (enrdf_load_stackoverflow) * 1971-09-10 1977-01-21
DE3167426D1 (en) * 1980-06-10 1985-01-10 Erich Pagendarm Fantail nozzle for producing a continuous gas or liquid veil, e.g. for burners
DE3443263A1 (de) * 1984-11-28 1986-06-05 Mannesmann AG, 4000 Düsseldorf Schlitzduesenausbildung fuer schlitzduesen zur erzeugung eines fluessigkeitsvorhanges
FR2578449B1 (fr) * 1985-03-06 1987-05-07 Bertin & Cie Dispositif de pulverisation lineaire
DE3806537A1 (de) * 1988-03-01 1989-09-14 Herbert Huettlin Duesenbaugruppe fuer apparaturen zum granulieren, pelletieren und/oder dragieren
FR2630350B1 (fr) 1988-04-22 1990-08-31 Bertin & Cie Dispositif de pulverisation lineaire d'eau de refroidissement de toles

Also Published As

Publication number Publication date
DK0577681T3 (da) 1995-05-01
US5427317A (en) 1995-06-27
JPH06506143A (ja) 1994-07-14
DE59201365D1 (de) 1995-03-23
DE4110127C2 (enrdf_load_stackoverflow) 1993-02-04
WO1992017280A1 (de) 1992-10-15
ES2071499T3 (es) 1995-06-16
DE4110127A1 (de) 1992-10-01
EP0577681A1 (de) 1994-01-12

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