EP3246095B1 - Düse zum versprühen von flüssigkeiten - Google Patents

Düse zum versprühen von flüssigkeiten Download PDF

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Publication number
EP3246095B1
EP3246095B1 EP17170683.1A EP17170683A EP3246095B1 EP 3246095 B1 EP3246095 B1 EP 3246095B1 EP 17170683 A EP17170683 A EP 17170683A EP 3246095 B1 EP3246095 B1 EP 3246095B1
Authority
EP
European Patent Office
Prior art keywords
outlet
nozzle
nozzle housing
openings
outlet openings
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.)
Active
Application number
EP17170683.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3246095A1 (de
Inventor
Thomas Zeeb
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.)
Lechler GmbH
Original Assignee
Lechler 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 Lechler GmbH filed Critical Lechler GmbH
Publication of EP3246095A1 publication Critical patent/EP3246095A1/de
Application granted granted Critical
Publication of EP3246095B1 publication Critical patent/EP3246095B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • 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
    • B05B7/0441—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 with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/045—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 with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being parallel just upstream the mixing chamber
    • 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
    • B05B7/0441—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 with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0466—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 with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the central liquid flow towards the peripheral gas flow
    • 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
    • B05B7/0892—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 the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • 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

Definitions

  • the invention relates to a nozzle for spraying liquids with a nozzle housing and several outlet openings in the nozzle housing, each outlet opening being arranged at the end of an outlet channel through the wall of the nozzle housing and wherein the plurality of outlet openings are arranged in a circle on the nozzle housing.
  • the nozzle has a nozzle housing and a plurality of outlet openings in the nozzle housing, each outlet opening being arranged at the end of an outlet channel through the wall of the nozzle housing.
  • the outlet openings are arranged in a circle on the nozzle housing.
  • German Offenlegungsschrift DE 32 11 886 A1 shows a device for introducing flushing liquids, in particular into a galvanizing drum.
  • the rinsing liquids are passed through the device via fluid channels running separately from one another and exit the device on different circular lines.
  • German patent specification DE 12 26 917 B shows a flame spray nozzle for flame spraying powders.
  • the channels lie on two different concentric circles and in the area of the outlet openings on a common circular line.
  • WO 2011/146274 A1 shows a fuel atomizer nozzle.
  • the outlet openings are located on an inside and on an outside on a common circular line.
  • the European published application EP 1 325 782 A2 shows a two-fluid nozzle for atomizing a liquid with a gas.
  • the outlet openings are located on an inside and on an outside on a common circular line.
  • German Offenlegungsschrift DE 42 38 736 A1 shows an atomizer for an oil burner.
  • the invention is intended to improve a nozzle for spraying liquids with regard to a distribution of the droplet spray produced.
  • a nozzle with the features of claim 1 is provided for this purpose.
  • a nozzle according to the invention for spraying liquids has a nozzle housing and several outlet openings in the nozzle housing, each outlet opening being arranged at the end of an outlet channel through the wall of the nozzle housing.
  • the plurality of outlet openings are arranged in a circle on the nozzle housing.
  • An exit angle which the respective central axis of the outlet channel assigned to the outlet opening encloses with a central longitudinal axis of the nozzle housing is different at least between a first and at least one second outlet opening.
  • the outlet openings therefore do not all emit a drop spray with the same outlet angle, but rather the outlet angle differs between different outlet openings.
  • a larger area can be exposed to a drop spray than would be the case with a constant exit angle of all exit openings.
  • the nozzle according to the invention it is possible to provide a larger number of outlet openings on the nozzle housing than would be the case with a constant outlet angle for all outlet openings. Because every outlet opening emits a conical droplet spray.
  • the individual conical droplet sprays can be arranged next to one another in such a way that they cover the largest possible area in a process room, but do not overlap or only slightly overlap. Particularly in the case of applications in the gas cooling area, a greater coverage of the injection plane with water can be ensured and shorter evaporation distances can be achieved with otherwise the same drop size and drop distribution.
  • outlet openings and outlet channels can be used which produce a comparatively small opening angle of the conical emerging droplet spray.
  • the invention can then be used to arrange a larger number of such outlet openings with changing outlet angles, so that a greater coverage with all droplet sprays generated than with a conventional nozzle with constant outlet angles for all Outlet openings is achieved.
  • Outlet openings that produce a small opening angle of the droplet spray produced can produce droplet spray with a distribution of the droplet sizes that fluctuates less than with outlet openings that produce a larger opening angle of the droplet spray produced.
  • advantages can be achieved especially for applications in the gas cooling sector.
  • two different exit angles to the central longitudinal axis of the nozzle housing are selected for the plurality of exit openings, but more than two different exit angles of the exit openings can also be used within the scope of the invention.
  • first outlet openings are arranged in a circle along an imaginary first circular line with a first radius and several second outlet openings are arranged in a circle along an imaginary second circular line with a second radius that is different from the first radius, the first and second circular lines to one another are concentric.
  • annular impact surface can be achieved on a flat surface which is arranged perpendicular to the central longitudinal axis of the nozzle housing.
  • the individual conical droplet sprays that emerge from the outlet openings are arranged in such a way that they do not overlap or only slightly overlap one another.
  • the outlet openings can easily be arranged on more than two concentric circular lines, each with different outlet angles.
  • the mouth openings of the outlet channels on the inside of the wall of the nozzle housing lie on a common imaginary circular line.
  • the mouth openings of the outlet channels on the inside of the wall of the nozzle housing can lie on two imaginary circular lines that are concentric to one another and the outlet openings can lie on a common imaginary circular line.
  • the nozzle is designed as a two-substance nozzle with an internal mixing chamber, the mixing chamber having a liquid inlet and a gas inlet.
  • Two-substance nozzles are particularly advantageous for applications in the gas cooling sector.
  • conventional two-fluid nozzles can be improved with regard to the distribution of the droplet spray produced.
  • the mixing chamber is designed to be annular, the outlet channels extending from the mixing chamber.
  • a conical distribution wall is provided, the annular mixing chamber being connected to the side of the distribution wall or on a peripheral edge of the distribution wall.
  • a conical distribution wall is used to divide an introduced liquid jet into a uniform thin film, which is then broken up into individual drops at the entrance of the mixing chamber by the gas jets also entering the mixing chamber.
  • an imaginary extension of at least one gas inlet channel extends into the area of the circumference of the conical distribution wall.
  • the gas jets from the gas inlet channel or from several gas inlet channels strike the water film generated by means of the distribution wall exactly where it leaves the distribution wall. This promotes the tearing of the water film into individual drops.
  • the representation of the Fig. 1 shows a nozzle housing 10 of a two-fluid nozzle according to the prior art.
  • the nozzle housing 10 has several outlet openings 12 which are arranged along an imaginary circular line around a central longitudinal axis 14 of the nozzle housing.
  • outlet channels which are arranged in the wall of the nozzle housing 10 and which lead to the outlet openings 12 form a constant outlet angle that is the same for all outlet channels that are assigned to the outlet openings 12.
  • the representation of the Fig. 2 shows the nozzle housing 10 from the front.
  • the outlet openings 12 arranged on an imaginary circular line around the central longitudinal axis 14 can be seen.
  • a total of twelve outlet openings 12 are provided.
  • Outlet channels 16 which end at the respective outlet openings 12 are shown in FIG Fig. 2 recognizable in sections.
  • the representation of the Fig. 2 It can also be seen that the outlet channels 16 are all arranged at the same outlet angle, a respective central axis of the outlet channels 16 and the central longitudinal axis 14 of the nozzle housing enclosing the outlet angle.
  • the representation of the Fig. 3 shows a nozzle housing 20 of a two-fluid nozzle according to the invention.
  • the nozzle housing 20 is provided with a plurality of first outlet openings 22 and with a plurality of second outlet openings 24.
  • the first outlet openings 22 differ from the second outlet openings 24 in their arrangement on a front side of the nozzle housing 20 and, as will be explained below, in an outlet angle which the respective central axis of the the outlet openings 22, 24 associated with the outlet channel with the central longitudinal axis 14 of the nozzle housing 20.
  • the representation of the Fig. 4 4 shows a front view of the nozzle housing 20. It can be seen that all of the first outlet openings 22 are arranged such that their center points lie on a first imaginary circular line 26.
  • the second outlet openings 24, on the other hand, are arranged such that their center points lie on a second imaginary circular line 28 on the front side of the nozzle housing 20.
  • a radius, measured from the central longitudinal axis 14 of the nozzle housing 20, is greater for the first circular line 26 than for the second circular line 28.
  • an exit angle which the center axes of the exit channels associated with the first exit openings 22 enclose with the center longitudinal axis 14 of the nozzle housing 20 differs from the corresponding exit angle of the second exit openings 24.
  • the exit angles of the first exit openings 22 are greater than the exit angles of the second exit openings 24.
  • FIG Fig. 4 it can be seen from the fact that at the outlet openings 24 a section of the mouth openings 30 of the respective outlet channels 34 can be recognized. In the case of the outlet openings 22, the corresponding mouth openings of the associated outlet channels 32 cannot be seen.
  • Fig. 5 shows schematically drop sprays 42 and 44 emerging from outlet openings 22 and 24, respectively.
  • the droplet sprays 42, 44 are each conical and that the droplet sprays 42, 44 are arranged in such a way that they do not touch one another. In this way, influencing the individual drop sprays 42, 44 can be avoided.
  • the droplet sprays 42, 44 are arranged such that their surface lines run approximately parallel in the area in which the smallest distance between two droplet sprays 42, 44 is present.
  • the largest possible annular area can be continuously acted upon with the droplet sprays 42, 44 on an impingement surface and at the same time the individual droplet sprays 42, 44 are largely prevented from influencing one another.
  • a total of eight first outlet openings 22 are provided, which then produce eight conical droplet sprays 42.
  • eight second outlet openings 24 are provided which produce eight conical droplet sprays 44.
  • the two-substance nozzle according to the invention with the nozzle housing 20 offers considerable advantages because it can ensure greater coverage of the injection plane with liquid, in particular water, and can also realize shorter evaporation distances.
  • FIG. 6 shows a two-substance nozzle 50 according to the invention, which is provided with the nozzle housing 20, which is shown in FIGS. 3 and 4 has already been shown.
  • Fig. 6 shows a sectional view, the section plane AA in Fig. 4 has already been shown and wherein this sectional plane runs through two first outlet openings 22.
  • the two-substance nozzle 50 has an air inlet 52 and a water inlet 54, the air inlet 52 and the water inlet 54 being arranged concentrically to one another, and the water inlet 54 being arranged within the annular air inlet 52.
  • Air entering the nozzle housing 20 is indicated by means of dashed arrows 56 and water entering the nozzle housing 20 is indicated by means of a dashed arrow 58.
  • the incoming water jet then hits a conical distribution wall 62, the cone tip of which lies on the central longitudinal axis of the nozzle housing 20.
  • the incoming liquid jet splits and is split by means of the distribution wall 62 into a film which moves on the conical distribution wall 62 in an approximately radial direction outward.
  • the conical distributing wall 62 ends at a circumferential edge 64. At the circumferential edge 64, the distributing wall merges into an annular mixing chamber 66.
  • channels 68 lead in a straight line to the mixing chamber 66.
  • the entering air jets strike the liquid film in the area of the peripheral edge 64, which film is just leaving the distribution wall 62 at the peripheral edge 64.
  • the liquid film is broken up into individual drops by means of the air jets.
  • the drop-air mixture then moves through the annular mixing chamber 66 and is further intimately mixed, so that a drop spray can then emerge at the outlet openings 22, 24.
  • a conical droplet spray 42 emerges from the outlet openings 22.
  • the second outlet openings 24 are shown in the sectional view of FIG Fig. 6 not recognizable.
  • FIG. 8 shows an enlarged sectional view of the nozzle housing 20, the sectional plane running through flat tool engagement surfaces 70 on the outside of the nozzle housing 20, see FIG Fig. 3 .
  • the double exit angle W1 is shown, which lies between the central axes 72 of the exit channels 32 of two exit openings 22 lying in the sectional plane.
  • the exit angle an angle which the central axes 72 of the outlet channels 32 enclose with the central longitudinal axis 14 of the nozzle housing 20 is referred to as the exit angle.
  • This exit angle is therefore W1 / 2.
  • the exit angle of the first exit openings ie the angle W1 / 2 which the central axes 72 of the exit channels 32 enclose with the central longitudinal axis 14 of the nozzle housing 20, is approximately 55 °.
  • the angle W1 is in Fig. 7 thus about 110 °.
  • FIG. 8 shows a partial sectional view on the plane BB in FIG Fig. 4 .
  • the cutting plane BB runs through two second outlet openings 24, with FIG Fig. 8 the sectional view is shown only up to the central longitudinal axis 14 of the nozzle housing 20.
  • An outlet channel 34 is assigned to each of the outlet openings 24.
  • An angle which the central axis 74 of the outlet channels 34 encloses with the central longitudinal axis 14 of the nozzle housing 20 is shown in FIG Fig. 8 designated with W2 / 2. In the embodiment shown, this exit angle is approximately 40 °.
  • FIG. 11 shows a partial view of the section plane AA in FIG Fig. 4 , wherein the cutting plane runs through two first outlet openings 22.
  • the sectional plane is only shown up to the central longitudinal axis 14 of the nozzle housing 20.
  • the central axes 72 of the outlet channels 32, which are assigned to the first outlet openings 22, with the central longitudinal axis 14 of the housing 20 assume an exit angle W1 / 2, which in the embodiment shown is approximately 55 °.
  • the exit angle W1 / 2 which is assigned to the first exit openings 22, is thus greater than the exit angle W2 / 2, which is assigned to the second exit openings 24.
  • the effects of these different exit angles are shown in the schematic illustration of Fig. 5 to recognize.

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EP17170683.1A 2016-05-19 2017-05-11 Düse zum versprühen von flüssigkeiten Active EP3246095B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016208653.7A DE102016208653A1 (de) 2016-05-19 2016-05-19 Düse zum Versprühen von Flüssigkeiten

Publications (2)

Publication Number Publication Date
EP3246095A1 EP3246095A1 (de) 2017-11-22
EP3246095B1 true EP3246095B1 (de) 2020-09-23

Family

ID=58701549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17170683.1A Active EP3246095B1 (de) 2016-05-19 2017-05-11 Düse zum versprühen von flüssigkeiten

Country Status (5)

Country Link
US (1) US10864531B2 (zh)
EP (1) EP3246095B1 (zh)
CN (1) CN107398362B (zh)
DE (1) DE102016208653A1 (zh)
ES (1) ES2834968T3 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017128495A1 (de) * 2017-11-30 2019-06-06 Westnetz Gmbh Vorrichtung und Verfahren zur Odorierung eines Gasstroms in einer Gasleitung
CN108672118A (zh) * 2018-06-04 2018-10-19 芜湖涛浪机械科技有限公司 一种用以喷射混合物的喷嘴
DE102020213695A1 (de) * 2019-12-04 2021-06-10 Lechler Gmbh Bündeldüse zum Versprühen eines Fluids, Anordnung mit einer Bündeldüse und Verfahren zum Herstellen einer Bündeldüse
CN111889247A (zh) * 2020-08-14 2020-11-06 广西励领农业科技有限公司 一种设有新型喷头结构的喷雾机
CN111995887A (zh) * 2020-08-19 2020-11-27 山西盛达威科技有限公司 一种炭黑结构喷雾调节方法
CN113063729B (zh) * 2021-06-02 2021-09-03 中国飞机强度研究所 一种飞机部件强度测试高温热环境模拟装置及其方法
KR102657134B1 (ko) * 2022-03-21 2024-04-11 김형수 다색 파운데이션 충진노즐

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE4238736A1 (de) * 1992-11-17 1994-05-19 Babcock Feuerungssysteme Zerstäuber für einen Ölbrenner

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EP0268702B1 (de) 1986-11-27 1990-03-28 Fluidics Instruments B.V. Druckluftzerstäuberdüse
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IT1238699B (it) * 1990-03-26 1993-09-01 Ente Naz Energia Elettrica Atomizzatore perfezionato per combustibili liquidi viscosi
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Also Published As

Publication number Publication date
ES2834968T3 (es) 2021-06-21
US20170333921A1 (en) 2017-11-23
CN107398362A (zh) 2017-11-28
CN107398362B (zh) 2021-01-05
DE102016208653A1 (de) 2017-11-23
US10864531B2 (en) 2020-12-15
EP3246095A1 (de) 2017-11-22

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