EP3804861A1 - Buse d'injection pour un dispositif de pulvérisation et dispositif de pulvérisation - Google Patents

Buse d'injection pour un dispositif de pulvérisation et dispositif de pulvérisation Download PDF

Info

Publication number
EP3804861A1
EP3804861A1 EP20190177.4A EP20190177A EP3804861A1 EP 3804861 A1 EP3804861 A1 EP 3804861A1 EP 20190177 A EP20190177 A EP 20190177A EP 3804861 A1 EP3804861 A1 EP 3804861A1
Authority
EP
European Patent Office
Prior art keywords
injection
injection chamber
nozzle
propellant
nozzle according
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
EP20190177.4A
Other languages
German (de)
English (en)
Other versions
EP3804861B1 (fr
Inventor
Boris Schmidt
Gabriele Beddies
Robert HEINKEL
Hannes Knupfer
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 EP3804861A1 publication Critical patent/EP3804861A1/fr
Application granted granted Critical
Publication of EP3804861B1 publication Critical patent/EP3804861B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/30—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the first liquid or other fluent material being fed by gravity, or sucked into the carrying fluid
    • 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31243—Eductor or eductor-type venturi, i.e. the main flow being injected through the venturi with high speed in the form of a jet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • 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
    • B05B1/04—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 flat form, e.g. fan-like, sheet-like
    • B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane 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
    • 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
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/244—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle
    • B05B7/2454—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle the carried liquid and the main stream of carrying liquid being brought together by parallel conduits, one conduit being in the other

Definitions

  • the invention relates to an injection nozzle for a, in particular agricultural, spray device for sucking in a liquid suction medium by means of a liquid propellant medium under excess pressure and for spraying a mixture of the suction medium and the propellant medium, with a nozzle housing, with an injection chamber arranged in the nozzle housing, an in the propellant nozzle opening into the injection chamber for generating a propellant medium jet entering the injection chamber and a liquid suction opening for the liquid suction medium.
  • the invention also relates to a spray device, in particular for agricultural purposes, for spraying a mixture of a liquid suction medium and a liquid propellant medium.
  • the invention aims to improve an injection nozzle and a spray device.
  • an injection nozzle with the features of claim 1 and a spray device with the features of claim 18 are provided for this purpose.
  • Advantageous further developments of the invention are specified in the subclaims.
  • the injection nozzle according to the invention for a spray device is provided for sucking in a liquid suction medium by means of a liquid propellant medium under excess pressure and for spraying a mixture of the suction medium and the propellant medium.
  • the injection nozzle has a nozzle housing, an injection chamber arranged in the nozzle housing, a propellant nozzle opening into the injection chamber for generating a propellant medium jet entering the injection chamber and a liquid suction opening for the liquid suction medium.
  • the liquid suction opening opens into an annular channel which has a flow connection to the injection chamber.
  • Injection nozzles are known in principle and work according to the so-called Venturi principle.
  • a jet of liquid enters an injection chamber, creates a negative pressure in the injection chamber and then carries gas or air with it.
  • the so-called water jet pump works according to this principle.
  • injection nozzles are problematic because the mixing ratio between the liquid that is sucked in and the carrier liquid changes greatly with the pressure or the amount of the carrier liquid. Such a change in the mixing ratio, even only in the event of unintentional fluctuations in pressure Carrier liquid, but is extremely problematic in agricultural engineering.
  • the injection nozzle according to the invention can ensure an essentially constant mixing ratio between the propellant and the suction medium even when the pressure of the propellant supplied changes.
  • the liquid suction medium first enters an annular channel which has a flow connection to the injection chamber, an even distribution of the suction medium can be ensured first in the annular channel and then also when it enters the injection chamber.
  • the annular channel can surround the propellant nozzle.
  • the flow connection from the annular channel to the injection chamber can be formed by means of a plurality of through bores arranged on an imaginary concentric circle or in some other suitable manner. It is advantageous if the suction medium enters the injection chamber in such a way that it evenly surrounds the propellant jet emerging from the propellant nozzle.
  • the annular channel to the injection chamber is open on one side, so that the flow connection to the injection chamber is formed by means of an annular gap.
  • the suction medium can enter the injection chamber in the form of an annular jet, so that a uniform mixing between the propellant medium and the suction medium can be ensured in the injection chamber.
  • the jet of propellant which opens into the injection chamber generates a negative pressure which acts in an area surrounding the jet of propellant.
  • the liquid suction opening opens into the annular channel upstream of the outlet opening of the propellant nozzle.
  • the suction medium in the annular channel can initially be distributed evenly over the circumference of the annular channel, so that the suction medium then enters the injection chamber evenly distributed around the circumference of the propellant jet via the flow connection to the injection chamber.
  • the flow connection from the annular channel to the injection chamber opens into the injection chamber at the level of the outlet opening of the propellant nozzle.
  • the annular channel is delimited at least on one side by a driving nozzle housing of the driving nozzle.
  • the suction medium flows in the annular channel around a propulsion nozzle housing and then enters the injection chamber as an annular jet, radially surrounding the propulsion nozzle housing.
  • a very even volume distribution of the suction medium around the propellant medium jet can be achieved and a structurally comparatively simple construction of the injection nozzle can be ensured, since the propellant nozzle housing simultaneously serves as a one-sided delimitation of the annular channel.
  • At least one screen is provided in a suction channel upstream of the liquid suction opening.
  • an amount of the incoming suction medium can be controlled and a constant ratio between the amount of the propellant medium and the amount of the suction medium can be ensured even with pressure fluctuations of the propellant medium.
  • two orifices arranged one behind the other in the direction of flow can be provided in the intake duct.
  • the aperture openings of the apertures or restrictors do not necessarily have to be arranged in alignment with one another, but can also be offset from one another.
  • the nozzle housing is provided with a diaphragm insert which has a section of the suction channel for sucking in the liquid suction medium and the diaphragm and which is detachably arranged on the nozzle housing.
  • the injection nozzle according to the invention can be constructed in a modular manner.
  • the passage opening of the diaphragm can be changed by inserting a diaphragm insert with a different diaphragm. If a mixture of pesticides and water is to be produced, can Replacing the panel insert therefore changes the concentration of the crop protection agent in the water.
  • the restrictor bore in other words the aperture, can have a diameter between, for example, 0.1 mm to 1.5 mm.
  • the diaphragm insert is connected to the nozzle housing by means of a sliding guide.
  • the diaphragm insert can be connected to the nozzle housing in a very simple manner.
  • the diaphragm insert has a connecting piece which can be pushed into a suitable bore in the nozzle housing.
  • the connecting piece can be provided with a circumferential sealing ring in order to completely form the intake duct by simply pushing in the diaphragm insert and to seal it off from the environment.
  • the nozzle housing it is also possible for the nozzle housing to have a connecting piece and the diaphragm insert to have a receiving area.
  • the diaphragm insert can be pushed into the nozzle housing by means of the sliding guide and locks automatically in its end position, for example by locking sealing rings into suitable grooves or receptacles on the nozzle housing.
  • a small recess can be provided between the nozzle housing and the diaphragm insert, into which the blade of a screwdriver can be inserted.
  • the panel insert is then moved a little way in the direction of extension along the sliding guide counter to the direction of insertion. This movement caused by the rotation of the screwdriver is then sufficient to release the locking between the diaphragm insert and the nozzle housing. After this latching has been released, the panel insert can simply be pulled out of the sliding guide by hand and without the need for additional tools.
  • the diaphragm insert is detachably arranged on an injector component that has at least the propellant nozzle and the injection chamber.
  • the modular structure of the injection nozzle according to the invention can be developed.
  • different injector components can be used for different suction media.
  • the injector component with the propellant nozzle which can wear out, can be exchanged in a simple manner.
  • the injector component with the orifice insert attached to it is expediently inserted into an outlet nozzle component of the injection nozzle.
  • the injector component can be removed from the outlet nozzle component and only then can the panel insert be detached from the injector component.
  • the injection chamber has, downstream of the outlet opening of the propellant nozzle, a first conical section which widens in the direction of flow, and has a second conical section which adjoins the first conical section and which widens in the direction of flow, the second conical portion has a larger cone angle than the first conical portion.
  • a cone angle of the first conical section is in the range from 5 ° to 15 °, in particular between 5 ° and 10 °.
  • a cone angle of the second conical section is in the range from 30 ° to 40 °.
  • the first conical section viewed in the direction of flow, has a length which is in the range of twice to four times, in particular three times, the length of the second conical section.
  • an outlet opening of the propellant nozzle opens into a section of the injection chamber that tapers conically in the direction of flow.
  • Such a configuration of the injection chamber contributes to a uniform mixing ratio between the propellant medium and the suction medium even in the event of pressure fluctuations in the propellant medium.
  • a cylindrical section of the injection chamber is arranged upstream of the first conical section, the first conical section adjoining the cylindrical section.
  • a ratio between the diameter of the cylindrical section of the injection chamber and a length of the section of the injection chamber that tapers conically in the direction of flow between the outlet opening of the propellant nozzle and the beginning of the cylindrical section is in the range from 0.5 to 5, in particular between 1 and 2, especially at 1.4.
  • a ratio between the diameter of the cylindrical section of the injection chamber and a diameter of the outlet opening of the propellant nozzle is in the range from 1 to 3, in particular between 1.5 and 1.7, in particular 1.6.
  • a diaphragm is provided in a suction channel upstream of the liquid suction opening, with a ratio between the diameter of the cylindrical section of the injection chamber and a diameter of a passage opening of the diaphragm in the range from 1.5 to 15, in particular between 4 and 6, in particular at 4.7, lies.
  • a ratio between an area of the cylindrical section of the injection chamber and an area of the flow connection from the annular channel to the injection chamber is in the range from 0.25 to 2.5, in particular between 0.5 and 1, in particular 0.76 .
  • the flow connection between the annular channel and the injection chamber is arranged in a section immediately upstream of the opening into the injection chamber between two walls which taper conically in the direction of flow.
  • constant flow conditions and pressure conditions can be set over the circumference of the annular channel and over the circumference of the injection chamber.
  • the annular channel merges into the injection chamber by means of an annular gap. Since this annular gap between the annular channel and the injection chamber tapers conically in the direction of flow, a constant mixing ratio between the propellant and suction medium is contributed to, even in the event of pressure fluctuations in the propellant.
  • the problem on which the invention is based is also solved by means of a spray device for spraying a mixture of a liquid suction medium and a liquid propellant medium with an injection nozzle according to the invention.
  • Fig. 1 shows an injection nozzle 10 according to the invention in the extended state.
  • the injection nozzle 10 has an injector component 12 and an outlet nozzle component 14.
  • the injector component 12 is inserted into the outlet nozzle component 14 in sections, cf. Fig. 2 to achieve an operable state of the injector nozzle 12.
  • the injection nozzle 12 is then inserted in a known manner into a nozzle holder (not shown) of a spray device, in particular an agricultural spray device.
  • a screen 16 can be seen on the injector component 12 which marks the beginning of an intake duct in the injector component 12.
  • Liquid suction medium is sucked in from a storage tank via the diaphragm 16, mixed with a liquid propellant medium and a mixture of suction medium and propellant medium is dispensed at a downstream end 18 of an injection chamber.
  • the mixture then enters the outlet nozzle component 14, cf. Fig. 2 , and is output as a flat jet via an outlet opening 20 of a flat jet nozzle 22.
  • a substantially any outlet nozzle can be provided on the outlet nozzle component 14, for example a hollow cone nozzle or a full cone nozzle.
  • FIG. 10 shows a sectional view of the injection nozzle 10 of FIG Fig. 1 when assembled.
  • the injector component 12 has now been inserted into the outlet nozzle component 14 in sections.
  • a mixture of liquid suction medium and liquid propellant medium enters an outlet chamber 26, at the downstream end of which the outlet nozzle 22 is then arranged.
  • a propellant nozzle housing 28 is arranged in the injector component, via which the liquid propellant medium, usually water under pressure, is introduced into the injection chamber 24 in the form of a propellant medium jet.
  • the jet of propellant medium is designed as a full jet and enters the injection chamber 24 via an outlet opening 30 of the propellant nozzle housing 28.
  • the outlet opening 30 has a diameter d TR .
  • the drive nozzle housing 28 is surrounded by an annular channel 32.
  • a suction channel 34 opens into the annular channel 32 at a liquid suction opening 36 Fig. 2 the left end of the intake duct 34 is shown in FIG Fig. 2 limited by the aperture 16.
  • the diaphragm 16 has a through opening 38 with a diameter d R.
  • the annular channel 32 is delimited on one side by the driving nozzle housing 28 and is in flow connection with the injection chamber 24.
  • the flow connection between the annular channel 32 and the injection chamber 24 is in the form of an annular gap 40.
  • the annular gap 40 is realized in that the annular channel 32 to the injection chamber 24 is open on one side.
  • a surface of the annular gap 40 at the level of the downstream end of the outlet opening 30 is denoted by A S.
  • the flow connection between the annular channel 32 and the injection chamber 24 can also be designed differently, for example by means of several channels.
  • the injection chamber 24 has four sections viewed in the direction of flow.
  • the outlet opening 30 of the propellant nozzle 28 and the annular gap 40 open into a conically tapering section 42 of the injection chamber which is generally frustoconical.
  • a cylindrical section 44 adjoins the conically tapering section 42.
  • a first, conically widening section 46 which has a first cone angle, adjoins the cylindrical section 44.
  • At the first Conically widening section 46 is followed by a second conically widening section 48 which has a second cone angle.
  • the second cone angle is larger than the first cone angle.
  • the first conically widening section 46 is longer than the second conically widening section 48.
  • a cone angle of the first conical section is in the range between 5 ° and 15 ° and in particular between 5 ° and 10 °.
  • a cone angle of the second conical section 48 is in the range from 30 ° to 40 °.
  • the first conical section 46 viewed in the direction of flow, has a length which is in the range of twice to four times, in particular three times, the length of the second conical section 48.
  • the two successive, conically widening sections 46, 48 contribute to a constant mixing ratio between the liquid propellant medium and the liquid suction medium even in the event of pressure fluctuations in the propellant medium.
  • a jet of propellant medium generated by means of the propellant nozzle and exiting from the outlet opening 30 of the propellant nozzle housing 28 enters the conically tapering section 42 of the injection chamber 24 and generates a negative pressure in the injection chamber 24 by means of the so-called Venturi effect 38 of the diaphragm 16 is sucked into the suction channel 34 and enters the annular channel 32 via the liquid suction opening 36.
  • the suction medium is distributed in the annular channel 32 and then enters the injection chamber 24 through the annular gap 40, evenly distributed over the circumference of the drive nozzle housing 28.
  • the annular gap 40 for example, several through channels can also be provided between the annular channel 32 and the injection chamber 24.
  • the jet of propellant medium together with the sucked-in suction medium, enters the cylindrical section 44 and then into the two conically widening sections 46, 48 of the injection chamber 24.
  • the propellant jet begins to tear open and the propellant jet and the sucked-in suction medium are mixed.
  • a mixture of suction medium and propellant medium enters the outlet chamber 26.
  • the mixture between the propellant and the suction medium is made more uniform.
  • a flat jet consisting of a mixture between propellant and suction medium then emerges from the outlet nozzle 22.
  • the special design of the injection nozzle 10 ensures a constant mixing ratio between propellant and suction medium, even in the event of pressure fluctuations in the propellant.
  • the injection nozzle 10 according to the invention is thereby particularly suitable for use in agricultural engineering.
  • the outlet nozzle 22 can also be designed as a full cone nozzle or a hollow cone nozzle within the scope of the invention.
  • FIG. 11 shows an enlarged illustration of the injector component 12 of the injection nozzle 10 of FIG Figs. 1 and 2 .
  • a diameter of the through opening of the diaphragm 16 is denoted by d R.
  • a diameter of the outlet opening 44 of the driving nozzle housing 28 is denoted by d TR.
  • a length of the conically tapering section 42 of the injection chamber 24 is designated by h seen in the flow direction.
  • a diameter of the cylindrical section 44 of the injection chamber 24 is denoted by d DH and a cross-sectional area of the cylindrical section 44 is denoted by A DH.
  • a surface of the annular gap 40 at the downstream end of the flow connection between the annular channel 32 and the injection chamber 24 is denoted by A S.
  • a cone angle of the first conically widening section 46 of the injection chamber 24 is denoted by ⁇ 1 and a cone angle of the second conically widening section 48 of the injection chamber 24 is denoted by ⁇ 2.
  • a length of the cylindrical section 44 of the injection chamber 24 is denoted by L 0.
  • a length of the first, conically widening section 46 is denoted by L 1 and a length of the second, conically widening section 48 is denoted by L 2.
  • L 0 is significantly smaller than h and in the embodiment shown is only about a third of h.
  • L 1 and L 2 are much larger than L 0 .
  • L 1 is larger than L 2 and L 1 is about twice as large to four times as large as L 2 .
  • ⁇ 1 is in the range from 5 ° to 15 °, in particular between 5 ° and 10 °.
  • ⁇ 2 is in the range from 30 ° to 40 °.
  • a ratio d DH / h between the diameter d DH of the cylindrical section 44 of the injection chamber 24 and the length h of the section 42 of the injection chamber 24 which tapers conically in the direction of flow between the outlet opening 30 and the beginning of the cylindrical section 44 is in the range of 0, 5 to 5, in particular between 1 and 2, in particular at 1.4.
  • a ratio d DH / d TR between the diameter d DH of the cylindrical section 44 of the injection chamber and a diameter d TR of the outlet opening 30 of the propellant nozzle is in the range from 1 to 3, in particular between 1.5 and 1.7, in particular 1, 6th
  • a ratio d DH / d R between the diameter d DH of the cylindrical section 44 of the injection chamber 24 and a diameter d R of a through opening of the diaphragm 16 is in the range from 1.5 to 15, in particular between 4 and 6, in particular 4.7 .
  • a ratio A DH / A S between an area A DH of the cylindrical section 44 of the injection chamber 24 and an area A S of the flow connection from the annular channel 32 to the injection chamber 24, especially an area A S of the annular gap 40, is in the range of 0, 25 to 2.5, in particular between 0.5 and 1, in particular at 0.76.
  • the ratios explained above and also the lengths and diameters and angles explained above contribute to a constant mixing ratio between suction medium and propellant medium, even if pressure fluctuations of the propellant medium occur.
  • the injection nozzle according to the invention is therefore particularly suitable for use in agricultural engineering.
  • Fig. 4 shows an injector component 112 according to a further embodiment of the invention.
  • the injector component 112 is very similar to the injector component 12 of FIG Figs. 1 to 3 constructed so that identical elements are either not explained or given the same reference numerals.
  • the injector component 112 can instead of the injector component 12 of Figs. 1 to 3 in the in the Figs. 1 to 3 outlet nozzle component 14 shown are used.
  • the injector component 112 has a modular panel insert 114.
  • the diaphragm insert 114 has the diaphragm 16 and a portion of the intake duct. The intake passage then continues in the injector component 112.
  • Fig. 5 shows the diaphragm insert 114 obliquely from below and Fig. 6 the panel insert 114 in a sectional view. Based on Fig. 6 it can be seen that the orifice insert 114 defines a portion 34A of the intake duct. The remaining section 34B of the intake duct, which then leads to the annular duct around the propellant nozzle, cf. Fig. 2 , on the other hand, is formed in the injector component 112.
  • the orifice insert 114 At its upstream end of the intake channel 34A, the orifice insert 114 has the orifice 16 which defines the restrictor bore 38.
  • the flow resistance of the restrictor bore 38 i.e. depending on the diameter of the restrictor bore 38 and the length of the restrictor bore 38, the flow resistance of the restrictor bore 38 changes and thus a ratio between the amount of suction medium sucked in and the amount of propellant medium can be set.
  • the section 34A of the intake duct is formed at its downstream end by means of a connecting piece 116 which protrudes beyond a stop surface 118 of the panel insert 114.
  • the connector 116 is provided for this, cf. Fig. 7 to be pushed into a suitable recess 120 in the injector component 112.
  • the connecting piece 116 is provided with a circumferential projection 122 which can snap into a matching circumferential groove 124 in the recess 120.
  • the circumferential projection 122 is formed by means of a sealing ring, so that after the projection 122 has latched into the groove 124, the two sections 34A, 34B of the intake duct are tightly connected to one another. Only minor requirements are placed on the tightness of this connection, since the suction channel 34 and thus also the connection of the sections 34A, 34B are under negative pressure when the injection nozzle is in operation.
  • the projection 122 which is latched into the groove 124 in the assembled state of the diaphragm insert 114, also ensures that the diaphragm insert 114 is mechanically secured to the injector component 112.
  • the sliding guide is formed on the injector component 112 by means of two strip-shaped projections 126 which protrude into a recess on the injector component 112 which extends to the edge of the injector component. As a result, an undercut is formed between the strip-shaped projections 126 and a base 128 of the recess on both sides.
  • the panel insert 114 also has strip-shaped projections 130 on both sides, which are matched to the length, height and width of the undercut in the recess.
  • the panel insert 114 can be pushed into the injector component 112 along the sliding guide until the end face 118 of the panel insert 114 strikes the front boundary 132 of the recess in the injector component 112. This state is in Fig. 4 shown.
  • the projection 122 on the connection piece 116 of the panel insert 114 is also locked into the groove 124 in the recess 120 of the injector component 112.
  • the edge of a coin or the blade of a screwdriver is in a rectangular recess 134 is introduced on the upper side of the injector component 112.
  • the front face 118 of the diaphragm insert 114 forms a boundary of this recess 134.
  • the injection nozzle according to the invention can be adapted in a simple manner in such a way that different ratios of the amount of suction medium and the amount of propellant medium can be set.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
EP20190177.4A 2019-09-06 2020-08-10 Buse d'injection pour un dispositif de pulvérisation et dispositif de pulvérisation Active EP3804861B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019213569.2A DE102019213569A1 (de) 2019-09-06 2019-09-06 Injektionsdüse für eine Sprühvorrichtung und Sprühvorrichtung

Publications (2)

Publication Number Publication Date
EP3804861A1 true EP3804861A1 (fr) 2021-04-14
EP3804861B1 EP3804861B1 (fr) 2023-08-09

Family

ID=72039360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20190177.4A Active EP3804861B1 (fr) 2019-09-06 2020-08-10 Buse d'injection pour un dispositif de pulvérisation et dispositif de pulvérisation

Country Status (4)

Country Link
US (1) US11583870B2 (fr)
EP (1) EP3804861B1 (fr)
DE (1) DE102019213569A1 (fr)
PL (1) PL3804861T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107659B1 (fr) * 2020-02-28 2022-06-24 Solcera Buse de pulvérisation à jet plat et faible dérive.
DE102021203755A1 (de) 2021-04-15 2022-10-20 Volkswagen Aktiengesellschaft Strahlpumpe, insbesondere Strahlpumpe für eine Brennstoffzellenanwendung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330462A2 (fr) * 1975-11-05 1977-06-03 Bouillard Rene Pulverisateur-melangeur de liquides
US4505431A (en) * 1982-06-14 1985-03-19 Spraco, Inc. Apparatus for discharging three commingled fluids _
DE4338585A1 (de) * 1993-11-11 1995-05-18 Graef Jordt Steffen Injektordüse
DE102009046992A1 (de) * 2009-11-23 2011-05-26 Robert Bosch Gmbh Abgasturbolader sowie Brennkraftmaschine
DE102011085899A1 (de) * 2010-11-10 2012-05-10 Valentin Stepanovich Fetisov Injektorpumpe zur Förderung heterogener Kanalisationsabwässer in mobilen Toiletten
EP2883618A1 (fr) * 2013-12-11 2015-06-17 Lechler GmbH Tuyère d'injecteur
WO2016090029A1 (fr) * 2014-12-05 2016-06-09 Briggs & Stratton Corporation Dispositifs de lavage sous pression, comprenant des pompes à jet
WO2020043499A1 (fr) * 2018-08-31 2020-03-05 WEYER, Yassin Osman Bellaede Pompe à jet

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180259A (en) * 1937-12-18 1939-11-14 Hale Fire Pump Co Inc Suction mechanism
DE1503706C3 (de) * 1965-06-19 1971-09-02 Siemens Ag Einer vakuumpumpe vorschaltbare strahlsaugeraggregate
US4634560A (en) * 1984-02-29 1987-01-06 Aluminum Company Of America Aspirator pump and metering device
US6042089A (en) * 1996-07-01 2000-03-28 Klein; Christophe Foam generating device
DE10138006C1 (de) * 2001-08-02 2003-04-24 Bosch Gmbh Robert Vorrichtung zur Vermischung von Fluiden
US8807158B2 (en) * 2005-01-20 2014-08-19 Hydra-Flex, Inc. Eductor assembly with dual-material eductor body
US8845178B2 (en) * 2010-02-23 2014-09-30 Asahi Organic Chemicals Industry Co., Ltd. In-line-type fluid mixer
CN103380336B (zh) * 2011-02-23 2016-09-07 开利公司 喷射器
US20130167566A1 (en) * 2011-05-23 2013-07-04 Carrier Corporation Ejectors and Methods of Manufacture
JP6115344B2 (ja) * 2013-06-18 2017-04-19 株式会社デンソー エジェクタ
EP3099987B1 (fr) * 2014-01-30 2022-07-20 Carrier Corporation Éjecteur et procédé de son fabrication
JP6549011B2 (ja) * 2015-10-01 2019-07-24 愛三工業株式会社 蒸発燃料処理装置
US20190168175A1 (en) * 2017-12-06 2019-06-06 Larry Baxter Solids-Producing Siphoning Exchanger

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330462A2 (fr) * 1975-11-05 1977-06-03 Bouillard Rene Pulverisateur-melangeur de liquides
US4505431A (en) * 1982-06-14 1985-03-19 Spraco, Inc. Apparatus for discharging three commingled fluids _
DE4338585A1 (de) * 1993-11-11 1995-05-18 Graef Jordt Steffen Injektordüse
DE102009046992A1 (de) * 2009-11-23 2011-05-26 Robert Bosch Gmbh Abgasturbolader sowie Brennkraftmaschine
DE102011085899A1 (de) * 2010-11-10 2012-05-10 Valentin Stepanovich Fetisov Injektorpumpe zur Förderung heterogener Kanalisationsabwässer in mobilen Toiletten
EP2883618A1 (fr) * 2013-12-11 2015-06-17 Lechler GmbH Tuyère d'injecteur
WO2016090029A1 (fr) * 2014-12-05 2016-06-09 Briggs & Stratton Corporation Dispositifs de lavage sous pression, comprenant des pompes à jet
WO2020043499A1 (fr) * 2018-08-31 2020-03-05 WEYER, Yassin Osman Bellaede Pompe à jet

Also Published As

Publication number Publication date
EP3804861B1 (fr) 2023-08-09
US11583870B2 (en) 2023-02-21
PL3804861T3 (pl) 2024-02-19
US20210069733A1 (en) 2021-03-11
DE102019213569A1 (de) 2021-03-11

Similar Documents

Publication Publication Date Title
DE2143012C3 (de) Brenneranordnung bei einer Gasturbinen-Brennkammer
DE60106815T2 (de) Ölzerstäuber
DE202013002283U1 (de) Zerstäuberdüse für einen sanitären Wasserauslauf sowie sanitäre Auslautarmatur mit einem Wasserauslauf
DE102009011900B3 (de) Vorrichtung zum Herstellen von mit Verstärkungsfasern durchsetzten Kunststoffteilen
EP2883618B1 (fr) Tuyère d'injecteur
EP3804861B1 (fr) Buse d'injection pour un dispositif de pulvérisation et dispositif de pulvérisation
DE3107936C2 (fr)
DE102010025501A1 (de) Sprühdüse zur Zudosierung von Stoffen in ein Reaktivgemisch
DE102015200236A1 (de) Verfahren zum Erzeugen eines Sprühstrahls und Zweistoffdüse
DE19841401C2 (de) Zweistoff-Flachstrahldüse
DE3516103A1 (de) Mischkopf zum einbringen von abrasiven partikeln in einen hochdruckwasserstrahl
DE69618914T2 (de) Brennstoff-Einspritzvorrichtung und -verfahren
WO1991012930A1 (fr) Dispositif de coupe et de nettoyage d'objets au moyen d'un melange d'eau et d'un produit abrasif sous une haute pression environnante
DE2618219A1 (de) Brennstoffeinspritzvorrichtung fuer ein gasturbinentriebwerk
DE3233744C2 (de) Verfahren zum Mischen eines kunststoffhaltigen Spritzbetons und Düsenmischkörper zur Durchführung des Verfahrens
DE4312994C2 (de) Vorrichtung zur Verspritzung von Suspensionen, insbesondere Mörteln
DE102020107092A1 (de) Sanitäre Einsetzpatrone
DE3703075C2 (fr)
DE1937254A1 (de) Doppelduese zum Einspritzen von fluessigem Brennstoff,Dampf oder Luft
DE202020101430U1 (de) Sanitäre Einsetzpatrone
DE102013002235A1 (de) Luftansaugvorrichtung für eine Sanitärbrause
DE102005024608B4 (de) Einspritzvorrichtung für Brennkammern von Flüssigkeitsraketentriebwerken
DE102005049686B4 (de) Einspritzelement
DE2742018A1 (de) Mischkopf fuer zweikomponenten- spritzpistole
WO2005049998A1 (fr) Dispositif d'injection

Legal Events

Date Code Title Description
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 HAS BEEN PUBLISHED

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 RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20211006

RBV Designated contracting states (corrected)

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 RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230316

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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 RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020004588

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231211

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231109

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231209

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231110

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230831

Year of fee payment: 4

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230810

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230831

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230831

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502020004588

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230810

26N No opposition filed

Effective date: 20240513

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230810

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231009

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20240621

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240821

Year of fee payment: 5