EP2543442A2 - Pulvérisateur et procédé de génération d'au moins un jet diffusé rotatif - Google Patents

Pulvérisateur et procédé de génération d'au moins un jet diffusé rotatif Download PDF

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Publication number
EP2543442A2
EP2543442A2 EP12172234A EP12172234A EP2543442A2 EP 2543442 A2 EP2543442 A2 EP 2543442A2 EP 12172234 A EP12172234 A EP 12172234A EP 12172234 A EP12172234 A EP 12172234A EP 2543442 A2 EP2543442 A2 EP 2543442A2
Authority
EP
European Patent Office
Prior art keywords
rotor
housing
fluid
spray nozzle
inlet channel
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Withdrawn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
EP12172234A
Other languages
German (de)
English (en)
Inventor
Hermann Lange
Siegmar Pelz
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 EP2543442A2 publication Critical patent/EP2543442A2/fr
Withdrawn legal-status Critical Current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
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/06—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction, i.e. creating a spinning torque due to a tangential component of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/003—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with braking means, e.g. friction rings designed to provide a substantially constant revolution speed

Definitions

  • the invention relates to a spray nozzle for generating at least one rotating spray jet with a housing having a fluid inlet and a rotor rotatably mounted on the housing with at least one outlet opening for fluid to be sprayed, wherein between the housing and the rotor a swirl space is formed and wherein the sprayed Fluid is introduced by means of at least one inclined in the intended direction of rotation of the rotor inlet channel into the swirl space.
  • the invention also relates to a method for producing at least one rotating spray jet by means of a spray nozzle.
  • a cleaning nozzle is known with which a rotating spray can be generated.
  • the spray nozzle has a shaft-shaped housing, which is partially surrounded by a rotor which is rotatably mounted on the housing. Between the housing and the rotor, a swirl space is formed, into which the fluid is introduced by means of an inclined inlet channel becomes. This will set the rotor in rotation.
  • an outlet opening of the rotor for fluid to be sprayed is oriented at an angle of less than 90 ° to the intended direction of rotation of the rotor. As soon as the rotor rotates and liquid emerges through the outlet opening, the exiting liquid thus causes a braking effect on the rotor. This can prevent that with increasing fluid pressure, the speed of the rotor does not increase further.
  • the invention is intended to improve a spray nozzle and a method for producing at least one rotating spray jet.
  • a spray nozzle for generating at least one rotating spray with a housing having a fluid inlet and a rotatably mounted on the housing rotor is provided with at least one outlet opening for fluid to be sprayed, wherein between the housing and the rotor a swirl space is formed and wherein the spraying fluid is introduced by means of at least one inclined in the intended direction of rotation of the rotor inlet channel into the swirl space, wherein the inlet channel has at its, in the swirl opening end, an extension.
  • the extension of the end of the inlet channel is preferably arranged on the side of the end of the inlet channel which opens into the swirl space and is disposed opposite to the direction of rotation.
  • outlet opening or a plurality of outlet openings on the rotor can be chosen arbitrarily in the nozzle according to the invention, since the speed-limiting effect is achieved by the extension of the end of the inlet channel, which opens into the swirl space between the housing and the rotor.
  • the extension extends approximately over half the circumference of the end of the inlet channel.
  • the at least one inlet channel may be formed as a bore inclined in the direction of rotation of the rotor.
  • the bore may have a circular cross-section and the extension may be sickle-shaped.
  • the extension may be formed as a portion of a bore which has the same cross-section as the inlet channel but at an angle other than the inlet channel is arranged.
  • the extension can be made relatively simple by two holes or bore sections are executed only with one and the same drill, in each case at different angles to the central longitudinal axis of the nozzle housing.
  • the rotor is rotatably mounted on at least one bearing surface on the housing, wherein the bearing surface is arranged spaced from the opening into the swirl space end of the at least one inlet channel.
  • the storage of the rotor on the housing is advantageously designed as hydrodynamic storage or liquid-lubricated storage.
  • the fluid to be sprayed then enters the bearing gap between the housing and the rotor and, immediately after the spray nozzle has been charged with fluid to be sprayed, ensures a substantially frictionless running of the rotor on the housing.
  • the housing is shaft-shaped and partially surrounded by the rotor, wherein a fluid inlet of the opposite end of the housing is provided with a drip tip.
  • a drip tip can prevent caking on the nozzle.
  • attachments of liquid to the nozzle can roll off quickly and centrally via the drip tip, thereby preventing caking or deposits on the nozzle.
  • a central longitudinal axis of a spray jet emerging from the at least one outlet opening on the rotor is arranged such that the exiting spray jet either accelerates or does not influence a rotation of the rotor by means of its recoil.
  • This lever arm is defined by a distance between the axis of rotation of the rotor and an intersection between a central longitudinal axis of the exiting spray jet and a line extending from the pivot point in the radial direction, wherein this line and the center longitudinal axis of the spray jet intersect at a right angle.
  • the lever arm corresponds to a distance between the central longitudinal axis of the spray jet and a straight line parallel thereto, which intersects the axis of rotation of the rotor.
  • the rotational speed of the rotor which is desirable at a certain fluid pressure can thereby also be set by the orientation of the outlet openings on the rotor or the spray jets.
  • the orientation of the outlet openings or of the spray jets can be chosen so that it leads to an optimal cleaning effect, since the rotational speed of the rotor is substantially independent of the orientation of the outlet openings.
  • the problem underlying the invention is also due to a method for producing at least one rotating spray jet by means of a spray nozzle with a housing which is stationary relative to a supply line for fluid to be sprayed, and a rotatably mounted on the housing rotor with at least one outlet opening for fluid to be sprayed dissolved, wherein the following steps are provided: introducing at least one fluid jet into a swirl space between the housing and the rotor, wherein a central longitudinal axis of the fluid jet is inclined at an angle in the intended direction of rotation of the rotor in order to set the rotor in rotation, wherein at a first Fluid pressure in the supply line of the angle of the central longitudinal axis has a first size and at a second fluid pressure in the supply line, which is greater than the first fluid pressure, the angle of the central longitudinal axis has a second size which is smaller than the first size.
  • the presentation of the Fig. 1 shows a spray nozzle 10 according to the invention, wherein the spray nozzle in the left half of Fig. 1 in a side view and in the right half of the Fig. 1 is shown in a sectional view.
  • the sectional plane extends in a plane parallel to the drawing surface containing a central longitudinal axis 12 of the nozzle.
  • the spray nozzle 10 according to the invention has a housing 14, which has a first housing portion 16, which in the illustration of Fig. 4 is disposed above, and a second housing portion 18, in the illustration of the Fig. 1 is arranged below.
  • the spray nozzle 10 further comprises a rotor 20 which is rotatably mounted on the housing 14 and this surrounds in sections.
  • the rotor 20 is provided with a plurality of outlet openings 22, 24 and 26.
  • the outlet opening 22 is arranged with respect to the circumference of the rotor 20 approximately opposite the two outlet openings 24 and 26 on the rotor 20.
  • the second housing portion 18 is screwed into a matching internal thread on the first housing portion 16.
  • the housing 14 forms by the two housing sections 16, 18 thereby a shaft which supports the rotor 20 captive and rotatable.
  • the first housing section 16 has a circular-cylindrical bearing surface 28 which is provided approximately centrally with a circumferential groove 30 which has a circular section-shaped cross-section. Opposite the circular cylindrical bearing surface 28 is a likewise circular cylindrical bearing surface 32 is disposed on the rotor 20.
  • the groove 30 is fed via one or more through holes 34 from the interior of the housing portion 14 out with fluid, so that immediately after applying the spray nozzle 10 with pressurized fluid between the bearing surfaces 28, 32 forms a fluid film, which then for a in the Essentially frictionless storage of the rotor 20 provides.
  • the lower end of the rotor 20 is also provided with a circular cylindrical bearing surface 36, which also faces a circular cylindrical bearing surface 38 on the lower housing portion 18.
  • a bearing gap between the bearing surfaces 36, 38 is acted upon from a swirl space 40 between the housing 14 and rotor 20 out with fluid.
  • Immediately after the injection of the spray nozzle 10 with pressurized fluid thereby penetrates fluid into the bearing gap between the bearing surfaces 36, 38 and thereby also ensures in the area of Fig. 1 lower bearing of the rotor 20 on the housing 14 for a substantially frictionless storage.
  • the second housing portion 18 has below the rotor on a circumferential projection 42, the top serves as a stop surface for the rotor 20 and thereby prevents the rotor 20 from slipping down from the housing 14.
  • a gap between the rotor 20 and the top of the circumferential projection 42 is also supplied with pressurized fluid, so that between the second housing portion 18 and the rotor 20, a hydrodynamic and thus substantially friction-free thrust bearing is formed.
  • the second housing section 18 is provided centrally with a drip tip 44.
  • a drip tip 44 By means of this drip tip 44 after the switching off of the fluid supply to the spray nozzle 10 on the outside of the housing 14 and the rotor 20 adhering water is selectively discharged and can drip thereby. Deposits or caking by fluid residues on the outside of the spray nozzle 10 are thereby largely prevented.
  • the first housing section 14 is provided with an internal thread 46 for screwing in a fluid supply line.
  • the outer side of the first housing portion 16 has a circumferential projection 48 which is larger than the inner diameter of the rotor 20. In the assembled state of the spray nozzle 10, the rotor 20 can thereby neither up nor down of the Slide housing 14 down.
  • the rotor 20 in the representation of Fig. 1 pushed from below onto the bearing surface 28 on the first housing portion 16.
  • the second housing portion 18 is then inserted into the rotor 20 and bolted to the first housing portion 16 until the two bearing surfaces 36, 38 are opposite each other.
  • the first housing portion 16 has an inlet chamber 50 which is disposed downstream of the internal thread 46. From the inlet chamber 50 go out of the radial bores 34, which supply the groove 30 in the bearing surface 28 on the first housing portion 16 with liquid. Starting from the inlet chamber 50, a total of five inlet channels 52 are provided in the first housing section 14, which connect the inlet chamber 50 with the swirl chamber 40 between the housing 14 and the rotor 20. The inlet channels 52 are inclined in the intended direction of rotation of the rotor 20, so that the fluid in the Swirl chamber 40 rotates in the intended direction of rotation of the rotor 20, this entrains and rotated.
  • the lying at the mouth in the swirl chamber 40 end of the inlet channel 52 is provided with a in Fig. 1 only sectionally recognizable extension 54 is provided, which is arranged at the arranged opposite to the direction of rotation of the opening into the swirl end of the inlet channel, but also extending from the center of the page over an angle of more than 90 ° in both circumferential directions. Only the center, seen in the circumferential direction, at which the largest radial extent of the extension 54 occurs, is therefore arranged on the side opposite to the direction of rotation of the opening into the swirl chamber 40 end of the inlet channels 52.
  • this extension causes the direction of the fluid jet entering the swirl chamber 40 from the inlet channel 52 to change so that the angle at which this fluid jet is inclined in the direction of rotation of the rotor 20 decreases.
  • the fluid jet also completely fills the extension and widens unilaterally in one direction by the extension, which is not in the direction of rotation of the rotor and this is optionally opposite.
  • the movement component of the fluid jets entering the swirl chamber 40 from the inlet passages 52 which is directed in the direction of rotation of the rotor 20, decreases with increasing fluid pressure. This prevents that, despite the increasing fluid pressure, the speed of the rotor 20 continues to increase.
  • the presentation of the Fig. 2 shows a view of the spray nozzle 10 of Fig. 1 from above, ie into the first housing section 16 of the housing 14. It can be seen that a total of five inlet channels 52 are arranged uniformly around the central longitudinal axis 12 of the spray nozzle 10 and these inlet channels 52 are inclined in the direction of rotation of the rotor 20. The intended direction of rotation of the rotor 20 is indicated by a curved arrow 56.
  • FIG. 2A shows schematically and in sections a view of the sectional plane 2A-2A in Fig. 2.
  • Fig. 2A serves only to clarify the course of the inlet channel 52 and the arrangement of the extension 54 at the opening into the swirl space 40 end of the swirl passage 52.
  • the inlet channels 52 are inclined in the direction of rotation of the rotor 20.
  • the direction of rotation of the rotor 20 is again indicated by the arrow 56.
  • the extension 54 is provided, which is arranged in the radial direction of the inlet channel largest extent on the counter to the direction of rotation 56 disposed side of the inlet channel 52.
  • the extension then runs out on both sides and thereby extends approximately over half the circumference of the inlet channel 52 at its end opening into the swirling space 40.
  • the extension 54 is formed as a bore portion and formed with the same circular diameter, as the inlet channel 52. However, the extension 54 is introduced as a bore portion at an angle other than the inlet channel 52.
  • the presentation of the Fig. 3 shows the spray nozzle 10 of Fig. 1 in the extended state.
  • the first housing section can be seen 16, the second housing portion 18 and the rotor 20.
  • the inlet channels 52 can be seen, which are tangential to the central longitudinal axis 12 of the nozzle 10 and inclined in the direction of rotation of the rotor 20.
  • each extension 54 is arranged at the in Fig. 3 visible and in the swirl space 40 between the housing 14 and the rotor 20 end opening.
  • the inlet channels 52 with the extensions 54 are arranged in a conical rotation of the first housing section 16.
  • the inlet channels 52 with the extensions 54 are formed and arranged so that a slightly fanned beam emerges from these and impinges on the inner wall of the rotor 20 and thereby set in rotation.
  • outlet opening 22 in the rotor 20 is formed as an intersection of a circumferential groove with nikabitessförmigem cross section on the inside of the rotor 20 and an incision of a side milling cutter from the outside of the rotor 20 ago.
  • the swirl space is formed on the one hand by the conical rotation on the first housing portion 16, in which the inlet channels 52 open, and on the other hand, a conical Andrehung 60 on the second housing portion 18, which is opposite to the conical Andrehung on the first housing portion 16.
  • FIG. 4 shows the state at a first fluid pressure. It can be seen that the fluid jets 62A are fanned out only slightly and have an approximately oval cross-section. A central axis 64A of the fluid jets 62A is in the projection of Fig. 4 arranged at a first angle to the central longitudinal axis 12 of the housing portion 16.
  • FIG. 5 again shows the first housing portion 16 and the fluid jets 62B at a second fluid pressure that is greater than the first fluid pressure according to FIG Fig. 4 ,
  • the fluid jets 62B are now more fanned out, but still have an approximately oval cross-section. It can be seen, however, that an angle between the central longitudinal axis 12 of the first housing section 16 and a central axis 64B of the fluid jets 62B is opposite to the corresponding angle in FIG Fig. 4 has decreased.
  • the component in the direction of rotation of the rotor 20 is at the lower fluid pressure according to Fig. 4 thus greater than the component in the direction of rotation of the rotor 20 at the higher fluid pressure according to Fig.
  • the presentation of the Fig. 6 shows the spray nozzle 10 of Fig. 1 in a side view and a first rotational position, in which the outlet opening 22 can be seen.
  • Fig. 7 shows a view on the cutting plane AA in Fig. 6 , It can be seen that the outlet opening 22 is aligned so that its central axis 66 is arranged perpendicular to a rotational direction of the rotor 20 and tangentially offset in a rotational direction of the rotor 20, wherein the rotational direction of the rotor 20 is indicated by the curved arrow 56.
  • the distance X corresponds to the lever arm with which the repulsive force of the spray jet emerging from the outlet opening 22 generates a torque on the rotor 20.
  • the presentation of the Fig. 8 shows the spray nozzle 10 of Fig. 1 in a side view in a second rotational position of the rotor 20, from the rotational position of Fig. 6 is different.
  • the two outlet openings 24 and 26 are in this view, the two outlet openings 24 and 26.
  • the outlet opening 24 generates an in Fig. 8 directed downward spray, whereas the outlet opening 26 in the representation of the Fig. 8 generated upward spray.
  • the spray nozzle 10 can be covered with the spray nozzle 10 according to the invention thus an angle of about 180 ° spray angle. Since the rotor 20 rotates about the central longitudinal axis 12, thereby, for example, the entire interior of a spray nozzle 10 surrounding the tank can be cleaned.
  • FIG. 9 shows a view on the cutting plane BB in Fig. 8 , In Fig. 9 It can be seen that a central axis 68 of the outlet opening 26, as well as a central axis of the in Fig. 9 not visible to the outlet opening 24, exactly radially to the central longitudinal axis 12 of the spray nozzle 10 is aligned.
  • the spray jets emerging from the outlet openings 24, 26 thus do not contribute to a rotation of the rotor 20, but they also do not slow it down.
  • the orientation and arrangement of the outlet openings 24, 26, 22 can be selected substantially arbitrarily in the spray nozzle 10 according to the invention and so that an optimum cleaning result is achieved.
  • the speed control of the rotor 20 is, as has been explained, achieved via the special shape of the inlet channels 52 with the extensions 54.

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EP12172234A 2011-07-08 2012-06-15 Pulvérisateur et procédé de génération d'au moins un jet diffusé rotatif Withdrawn EP2543442A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011078857A DE102011078857A1 (de) 2011-07-08 2011-07-08 Sprühdüse und Verfahren zum Erzeugen wenigstens eines rotierenden Sprühstrahls

Publications (1)

Publication Number Publication Date
EP2543442A2 true EP2543442A2 (fr) 2013-01-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12172234A Withdrawn EP2543442A2 (fr) 2011-07-08 2012-06-15 Pulvérisateur et procédé de génération d'au moins un jet diffusé rotatif

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US (1) US20130008974A1 (fr)
EP (1) EP2543442A2 (fr)
CN (1) CN102861684A (fr)
DE (1) DE102011078857A1 (fr)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
MY179204A (en) * 2014-02-10 2020-11-01 Philip Morris Products Sa Cartridge with a heater assembly for an aerosol-generating system
WO2016040618A2 (fr) 2014-09-10 2016-03-17 The Procter & Gamble Company Bande non tissée
DE102015003561A1 (de) 2015-03-18 2016-09-22 Gea Tuchenhagen Gmbh Rotierender Reiniger
DE102015003559A1 (de) 2015-03-18 2016-09-22 Gea Tuchenhagen Gmbh Rotierender Reiniger
DE102016102727A1 (de) * 2015-08-17 2017-02-23 Netzsch-Feinmahltechnik Gmbh Reinigungsvorrichtung und produktverarbeitende Anlage
DE102018000528A1 (de) * 2018-01-21 2019-07-25 Michael Layher Düsenvorrichtung zum Ausbringen von Fluiden
CN108856153B (zh) 2018-06-27 2019-07-05 南京汽轮电力控制有限公司 光学器件正负风压自动清洁方法
CN110801955A (zh) * 2018-08-05 2020-02-18 大连理工大学 一种带扭转式变截面喷孔的喷嘴
DE102019114558A1 (de) * 2019-05-29 2020-12-03 Gea Tuchenhagen Gmbh Reinigungsvorrichtung und Verfahren zur Montage einer Reinigungsvorrichtung
CN113401559B (zh) * 2021-07-07 2022-05-17 浙江金成环保科技工程有限公司 地下洞库沉积射流扰动装置

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US3125297A (en) * 1964-03-17 Rotary spray head
US3809317A (en) * 1972-03-24 1974-05-07 L Bender Rotatable spray nozzle assembly
AU581645B2 (en) * 1984-03-09 1989-03-02 Yoram Shevach Water sprinkler
DE3412319C1 (de) * 1984-04-03 1985-06-27 Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg Als hydraulische Wirbelstrahlduese ausgebildetes Arbeitswerkzeug
DE19811736A1 (de) * 1998-03-18 1999-09-23 Guenter Slowik Drallerzeuger für Düsen und Verfahren zum Verändern der Drallbewegung
DE10006864B4 (de) 2000-02-16 2006-02-09 Spraying Systems Deutschland Gmbh Reinigungsdüse
US8137481B2 (en) * 2009-06-30 2012-03-20 Alfa Laval Corporate Ab Tank cleaning apparatus

Also Published As

Publication number Publication date
US20130008974A1 (en) 2013-01-10
CN102861684A (zh) 2013-01-09
DE102011078857A1 (de) 2013-01-10

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