EP3200928B1 - Ensemble de buses pour liquide - Google Patents

Ensemble de buses pour liquide Download PDF

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Publication number
EP3200928B1
EP3200928B1 EP14777676.9A EP14777676A EP3200928B1 EP 3200928 B1 EP3200928 B1 EP 3200928B1 EP 14777676 A EP14777676 A EP 14777676A EP 3200928 B1 EP3200928 B1 EP 3200928B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
pressure
accordance
liquid
outlet part
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
EP14777676.9A
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German (de)
English (en)
Other versions
EP3200928A1 (fr
Inventor
David Ruckwied
Christian Langer
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP3200928A1 publication Critical patent/EP3200928A1/fr
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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
    • B05B1/16—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 having selectively- effective outlets
    • B05B1/1609—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 having selectively- effective outlets with a selecting mechanism comprising a lift valve
    • 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
    • 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
    • B05B1/046—Outlets formed, e.g. cut, in the circumference of tubular or spherical elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor

Definitions

  • the invention relates to a nozzle arrangement for liquid having a Düseneinlassteil having a inlet channel for pressurized liquid, and having a Düsenauslassteil which is relative to the Düseneinlassteil between a first position and a second position continuously displaced back and forth and one formed as a flat jet nozzle In the first position, only the high-pressure nozzle is in fluid communication with the inlet channel and wherein in the second position, the high-pressure nozzle and the at least one low-pressure nozzle are in flow communication with the inlet channel.
  • a pressurized liquid for example water
  • the pressurized fluid may be supplied to the nozzle assembly via, for example, a jet pipe from a high pressure cleaner or similar device.
  • the pressurized liquid is discharged from the nozzle assembly in the form of a flat jet. With the aid of the flat jet, liquid can be applied to a large area within a short time, for example to clean the area, but the pressure of the liquid on sensitive areas must be reduced in order to avoid damage.
  • a nozzle arrangement is known with a nozzle inlet part and a nozzle outlet part displaceable relative to the nozzle inlet part.
  • the nozzle outlet part has, in addition to a high-pressure nozzle, two outlet bores arranged symmetrically with respect to the high-pressure nozzle.
  • the nozzle outlet part can assume a first position relative to the nozzle inlet part, in which the liquid supplied to the nozzle inlet part via a jet pipe is discharged only via the high-pressure nozzle, so that the discharged liquid has a high pressure.
  • the nozzle outlet part assume a second position in which the liquid can be discharged not only via the high-pressure nozzle but also via the outlet holes, so that the total discharged liquid has a relatively low pressure.
  • a continuous change in the pressure of the discharged liquid is not possible in this nozzle arrangement, since the nozzle outlet part can optionally take only the first position or the second position.
  • the liquid is discharged from the high-pressure nozzle and from the outlet holes in the form of a spot jet.
  • the nozzle outlet part has a high-pressure nozzle configured as a flat-jet nozzle and a low-pressure nozzle arranged coaxially with the high-pressure nozzle, which is likewise designed as a flat-jet nozzle.
  • the nozzle inlet part comprises an inlet channel, to which pressurized liquid can be supplied via a jet pipe.
  • a first position of the nozzle outlet part only the high-pressure nozzle is in fluid communication with the inlet channel, so that liquid can be discharged under high pressure from the high-pressure nozzle.
  • the flow connection between the inlet channel and the low-pressure nozzle is interrupted.
  • the nozzle outlet part By moving the nozzle outlet part from the first position to the second position, a flow path from the inlet channel to the low-pressure nozzle is released, wherein the flow cross-section of the flow path continuously widens when the nozzle outlet part is moved to the second position.
  • the liquid supplied to the nozzle inlet part can thus be discharged via the high-pressure nozzle and also via the low-pressure nozzle.
  • This makes it possible to continuously change the pressure of the discharged liquid at a constant flow rate.
  • the known nozzle arrangement has a non-linear control characteristic, that is, the pressure of the discharged liquid varies unevenly in the uniform displacement of the nozzle outlet part. This complicates the reproducible setting of a desired pressure.
  • changes in the known nozzle arrangement when moving the Düsenauslassteils the jet pattern of the liquid delivered that is, it changes the geometry of the flat jet.
  • Object of the present invention is to develop a nozzle assembly of the type mentioned in such a way that the pressure of the discharged liquid can be changed uniformly with constant flow and minimal changes in the spray pattern.
  • the at least one low pressure nozzle is radially offset from the high pressure nozzle and the Düsenauslassteil a kaupel over which the high pressure nozzle is independent of the position of the Düsenauslassteils with the inlet channel in flow communication and in the first position of the nozzle outlet part interrupts a flow connection of the inlet channel with the at least one low-pressure nozzle and the transition of the nozzle outlet part from the first position to the second position releases an increasing annular gap of adjustable width, via which the inlet channel is in flow communication with the at least one low-pressure nozzle.
  • the at least one low-pressure nozzle is arranged radially offset from the high-pressure nozzle. Due to the greater flow rate of the liquid jet discharged from the high-pressure nozzle, the liquid jet discharged from the at least one low-pressure nozzle is deflected in the direction of the liquid jet of the high-pressure nozzle. As a result, the flat jet emitted by the low-pressure nozzle is combined with the flat jet emitted by the high-pressure nozzle at a short distance from the high-pressure nozzle, so that a common flat jet is formed.
  • the geometry of the common flat jet and thus the spray pattern of the liquid discharged from the nozzle arrangement undergoes at most a very small change in the transition of the nozzle outlet part from the first position to the second position.
  • the nozzle outlet part has a connection nipple, which is arranged upstream of the high-pressure nozzle and is permanently in fluid communication with the high-pressure nozzle, irrespective of the position of the nozzle outlet part.
  • the connection nipple In the first position of the nozzle outlet part, the connection nipple interrupts the flow connection from the connection channel to the at least one low-pressure nozzle.
  • the connection nipple in the first position of the nozzle outlet part, the connection nipple is in liquid-tight contact with an outlet section of the inlet channel. In the first position of the nozzle outlet part, liquid supplied to the inlet channel can reach the high-pressure nozzle via the connecting nipple, but not to the at least one low-pressure nozzle.
  • the connecting nipple releases an annular gap.
  • the annular gap allows a flow path from the inlet channel to the at least one low-pressure nozzle, so that liquid can reach not only the high-pressure nozzle but also the at least one low-pressure nozzle.
  • the width of the annular gap increases during the transition of the nozzle outlet part from the first position to the second position. As a result, the flow rate of the liquid flowing to the at least one low-pressure nozzle is increased. It has been shown that by such an embodiment, the pressure of the discharged liquid at a constant flow rate over a large control range can be changed uniformly.
  • the width of the annular gap at the transition of the nozzle outlet part from the first position to the second position continuously, in particular continuously, so that the flow rate of the liquid flowing to the at least one low-pressure nozzle, continuously, in particular continuously increases.
  • the nozzle outlet part can only be moved when it is not acted upon by pressurized liquid, that is, when the nozzle assembly is not flowed through by pressurized liquid.
  • the nozzle outlet part is preferably also displaceable, when pressurized liquid is applied, ie during operation of the nozzle assembly.
  • the nozzle arrangement according to the invention makes it possible, for example, to change the pressure of the discharged liquid at a constant flow rate in a control range between approximately 200 bar and approximately 10 to 20 bar virtually linearly.
  • the constant flow rate may for example be 11 to 12 l / min and the discharged liquid forms practically a constant fan-shaped flat jet.
  • the nozzle arrangement according to the invention enables the user to reproducibly adjust the pressure of the discharged liquid at a constant delivery rate and virtually constant jet pattern. This facilitates handling of the nozzle assembly.
  • the liquid outlet direction of the at least one low-pressure nozzle is inclined toward the liquid outlet direction of the high-pressure nozzle.
  • the liquid discharged from the at least one low pressure nozzle is thus directed to the liquid discharged from the high pressure nozzle. This provides a spray pattern that undergoes virtually no change in the transition of the nozzle outlet portion from the first position to the second position.
  • the liquid flowing through the annular gap of the at least one low-pressure nozzle without reversal of the flow direction can be fed.
  • the liquid is passed on its way from the inlet channel to the at least one low-pressure nozzle on the outside of the connecting nipple along, without it undergoes a reversal of direction.
  • the risk that the liquid in the area between the inlet channel and the at least one low-pressure nozzle vortex and / or so-called "dead spots" that could affect the control characteristics of the nozzle assembly is kept particularly low.
  • the connecting nipple is conveniently aligned with the high pressure nozzle, because this flow losses can be kept low.
  • the nozzle outlet part has a nozzle body which forms the high-pressure nozzle and the at least one low-pressure nozzle.
  • the high-pressure nozzle and the at least one low-pressure nozzle are thus formed by a one-piece component. This facilitates the assembly of the nozzle assembly and reduces their manufacturing costs.
  • the connecting nipple protrudes from a rear side of the nozzle body facing the inlet channel. If the nozzle outlet part is displaced from the first position in the direction of the second position, the connecting nipple releases an annular gap, which in such a configuration is limited on the one hand by an end region of the connecting nipple and on the other hand by an end region of the inlet channel and whose width when moving the Nozzle outlet part continuously increases from the first position to the second position.
  • connection nipple is pressed or glued in an advantageous embodiment of the invention in the nozzle body. This results in a further simplification of the assembly of the nozzle assembly and reduces their production costs.
  • An outlet section of the inlet channel in a preferred embodiment of the invention, has a sealing surface, widening conically in the direction of flow of the liquid, against which the connecting nipple rests in a liquid-tight manner in the first position of the nozzle outlet section.
  • a wall of the connecting nipple in the first position of the nozzle outlet part lies directly, i. without the interposition of an additional sealing element, for example a sealing ring, against a wall of the inlet channel.
  • the inlet channel desirably has a cylindrical channel section. Upstream of the cylindrical one Channel section is conveniently arranged another channel portion of the input channel, the flow cross-section is continuously reduced in the flow direction of the liquid.
  • An inlet section of the inlet channel is preferably cylindrically shaped and accommodates an end section of a jet pipe via which pressurized liquid can be supplied to the inlet channel.
  • the jet pipe is conveniently soldered into the inlet section of the inlet duct.
  • the connecting nipple has an annular bead which rests in a liquid-tight manner on the sealing surface of the inlet channel in the first position of the nozzle outlet part.
  • the annular bead allows in a structurally simple manner a liquid-tight seal between the inlet channel and the connecting nipple without an additional sealing element, such as a sealing ring made of an elastomeric material must be used.
  • the surface of the annular bead is preferably curved in a circular arc.
  • an extension section of the connecting nipple connects in the flow direction of the liquid to the annular bead, in which the outer diameter of the connecting nipple continuously widens in the flow direction of the liquid.
  • the extension portion is conical.
  • an input portion of the connecting nipple is arranged in an advantageous embodiment of the invention, wherein the input portion immersed in the first position of the Düsenauslassteils in a preferably cylindrically configured portion of the inlet channel.
  • the outer diameter of the inlet section can hereby be chosen to be slightly smaller than the inner diameter of the inlet section of the inlet channel.
  • the outer diameter of the input section continuously tapers in the direction away from the annular bead, that is to say in the direction of the free end of the input section.
  • the input portion forms on its outer side a plurality of successive conical surfaces whose inclination to the central axis of the input channel increases with increasing distance to the annular bead.
  • a first, adjacent directly to the annular bead cone surface is inclined only at a small angle to the central axis, in particular at an angle of at most 5 °, and with increasing distance from the annular bead, the successive conical surfaces on a growing inclination angle.
  • the maximum inclination angle is preferably 45 ° to 65 °.
  • the input section can have, for example, 4 to 8 conical surfaces with different inclinations to the central axis.
  • the nozzle outlet part has a first and at least one second passage, which are arranged parallel to each other, wherein at the downstream end of the first passage, the high-pressure nozzle is arranged and wherein at the downstream end of the at least one second passage channel, a low-pressure nozzle is arranged ,
  • the liquid is thus supplied to the high pressure nozzle and the at least one low pressure nozzle via parallel aligned passageways.
  • the parallel alignment of the through channels makes it possible to produce the nozzle outlet part inexpensively.
  • connection nipple dips in an advantageous embodiment in the first passageway.
  • connection nipple is pressed or glued into the first passage.
  • the first through-channel is stepped and has a cylindrical first channel section into which the connecting nipple dips and adjoins an inwardly directed step a second cylindrical channel section whose inner diameter is preferably identical to the inner diameter of the Connecting nipple has in its downstream End Suitet.
  • a conical channel section of the first through-channel adjoins the second cylindrical channel section.
  • the inner diameter of the first passage channel decreases continuously in the flow direction of the liquid.
  • the high-pressure nozzle may be arranged on or in the conical channel section.
  • the high-pressure nozzle is expediently designed as an end region of the first through-channel which continuously tapers in the direction of flow of the liquid, wherein the end region has two diametrically opposite pocket-shaped extensions to which a circular outlet opening adjoins in the flow direction of the liquid.
  • the end region of the first through-channel can be configured, for example, conical.
  • the liquid undergoes a deflection so that it subsequently forms a flat jet.
  • the pocket-shaped extensions can form part spherical deflecting surfaces for this purpose.
  • Flat jet nozzles with pocket-shaped extensions are those skilled in the art, for example from the WO 94/17921 A1 known.
  • the at least one low-pressure nozzle is designed as a continuously tapering end region of a second through-channel, followed by a slot-shaped outlet opening in the flow direction of the liquid, wherein the slot-shaped outlet opening is arranged offset in the direction of the high-pressure nozzle to the longitudinal axis of the second through-channel ,
  • the end region of the second through-channel can, for example, be conical or in the form of a partial sphere.
  • the slot-shaped outlet opening cuts the itself continuously tapering end portion of the second passageway off-center. When flowing through the slot-shaped outlet opening, the liquid forms a flat jet.
  • the flat jet is inclined in the direction of the high-pressure nozzle. This has the consequence that the flat jet emitted by the at least one low-pressure nozzle merges with the flat jet emitted by the high-pressure nozzle to form a common flat jet whose geometry practically does not change when the nozzle outlet part is displaced from the first position to the second position.
  • the nozzle outlet part has at least two low-pressure nozzles which are arranged symmetrically with respect to the high-pressure nozzle and which are each designed as flat-jet nozzles.
  • the high pressure nozzle is thus positioned between at least two low pressure nozzles arranged symmetrically to the high pressure nozzle.
  • the liquid In the first position of the nozzle outlet part, the liquid is discharged via the high-pressure nozzle in the form of a flat jet. If the nozzle outlet part is displaced from the first position to the second position, then an increasing proportion of the supplied liquid is discharged via the low-pressure nozzles, wherein the flat jets of the low-pressure nozzles combine with the flat jet of the high-pressure nozzle to form a common flat jet.
  • the nozzle inlet part has a recess into which the inlet channel opens and in which the nozzle outlet part is held displaceably.
  • the nozzle outlet part may have on its outer side an annular groove in which a sealing ring is arranged, which rests liquid-tight on a wall of the recess of the nozzle inlet part.
  • the nozzle outlet part is conveniently rotatably held in the recess. This ensures that the nozzle outlet part relative to the nozzle inlet part only axially displaced but can not be rotated.
  • an eccentrically arranged locking pin can be used, which dips into alignment with each aligned bores of the Düseneinlassteils and the Düsenauslassteils.
  • the locking pin ensures a structurally simple way that the nozzle outlet part can not be rotated relative to the nozzle inlet part.
  • the nozzle arrangement has a rotary part which is rotatable about a thread and axially displaceable on the nozzle inlet part and which has a driver for displacing the nozzle outlet part.
  • the rotary part surrounds the nozzle inlet part in the circumferential direction and can be rotated relative to the nozzle inlet part about its longitudinal axis. Since the rotary member is threadedly connected to the nozzle inlet member, rotational movement of the rotary member also results in axial displacement of the rotary member relative to the nozzle inlet member. This displacement movement is transmitted from the rotary member via the driver on the nozzle outlet part, which is held non-rotatably in the recess of the nozzle inlet part.
  • the Düsenauslassteil preferably has a radially outwardly projecting flange, with which the driver of the rotary member is engaged.
  • the nozzle arrangement according to the invention comprises two housing half-shells which surround the rotary part and are non-rotatably connected to the rotary part. This allows the user to move the nozzle outlet part relative to the nozzle inlet part by rotating the two housing halves together with the rotating part about the longitudinal axis of the nozzle arrangement.
  • the two housing half-shells can be rotatably held on a jet pipe, which is rotatably connected to the Düseneinlassteil.
  • a total occupied by the reference numeral 10 advantageous embodiment of a nozzle arrangement according to the invention is shown schematically.
  • the nozzle assembly 10 can be supplied with pressurized fluid (not shown in the drawing) which is discharged from the nozzle assembly 10 in the form of a flat jet.
  • the nozzle arrangement 10 has a nozzle inlet part 12 and a nozzle outlet part 16 which is displaceable relative to the nozzle inlet part 12 coaxially with the longitudinal axis 14 of the nozzle arrangement.
  • the nozzle inlet part 12 has a recess 18 with a bottom wall 20 and a cylindrical side wall 22.
  • the nozzle outlet part 16 dips into the recess 18 and is displaceably mounted in the recess 18 in the direction of the longitudinal axis 14.
  • the recess 18 extends to a front side 24 of the nozzle inlet part 12.
  • the nozzle outlet part 16 protrudes with a front end section 26 out of the recess 18.
  • the inlet channel 28 which extends from a rear side 30 of the nozzle inlet part 12 to the recess 18.
  • the inlet channel 28 has a cylindrical inlet section 32, to which a conical channel section 36 adjoins via a radially inwardly directed step 34, the flow cross-section of which continuously decreases with increasing distance from the step 34.
  • the conical channel section 36 is followed by a cylindrical channel section 38. Adjoining the cylindrical channel section is an outlet section 40 whose flow cross-section continuously widens with increasing distance from the cylindrical channel section 38 and which forms a conical sealing surface 42.
  • the inlet section 32 of the inlet channel 28 receives an end portion of a jet pipe 44 which is soldered into the input section 32.
  • liquid under pressure for example pressurized water
  • the jet pipe 44 can for this purpose via a supply line, not shown in the drawing, For example, a pressure hose to be connected to a known high-pressure cleaning device.
  • the nozzle outlet part 16 is in FIG. 4 shown enlarged. It has a one-piece nozzle body 46 which has a first through hole 48 oriented coaxially to the longitudinal axis 14 and two second through holes 50, 52 arranged radially offset from the first through hole 48 and aligned parallel to the first through hole 48 and positioned symmetrically to the first through hole 48.
  • the first through-hole 48 forms a first through-channel of the nozzle body 46
  • the second through-holes 50, 52 each form a second through-channel of the nozzle body 46.
  • the first through-bore 48 has a first cylindrical bore section 54, which merges via a radially inwardly directed step 56 into a second cylindrical bore section 58.
  • the bore section 58 is adjoined by a conical third bore section 60, the flow cross-section of which continuously decreases with increasing distance from the second bore section 58.
  • the third bore section 60 extends as far as a circular outlet opening 68, via which the first through-bore 48 is in flow connection with an end-side depression 70.
  • the recess 70 is formed in a front side 72 of the nozzle body 4, which faces away from the bottom wall 20 of the recess 18.
  • the third bore section 60 has, in an end region 62, two diametrically opposite pocket-shaped extensions 64, 66 which each form a part-spherical deflection surface.
  • the two pocket-like extensions 64, 66 in combination with the outlet opening 68 form a high-pressure nozzle 74, the liquid in the form of an in FIG. 5 schematically shown central flat beam 76 emits.
  • connection nipple 78 of the nozzle outlet part 16 is pressed, which protrudes from one of the bottom wall 20 of the recess 18 facing the rear side 80 of the nozzle body 46.
  • the connecting nipple 78 has at its end facing away from the nozzle body 46 an increasingly tapering in the direction of its free end input section 82, to which an annular bead 84 connects in the direction of the nozzle body 46.
  • the outer side of the input section 82 is formed by a plurality of successive conical surfaces whose inclination to the central axis of the input section 82 and thus to the longitudinal axis 14 increases with increasing distance to the annular bead 84.
  • the surface of the annular bead 84 is curved in a circular arc. This is especially true of the FIGS. 6, 7 and 8th clear.
  • the annular bead 84 is adjoined in the direction of the nozzle body 46 by an extension section 86 whose outer diameter widens conically in the direction of the nozzle body 46.
  • the second through holes 50 and 52 are identical and each have a cylindrical bore portion 88 and 90, to which an end portion 92 and 94 connects, the flow cross-section decreases with increasing distance to the cylindrical bore portion 88, 90.
  • the end portions 92, 94 are designed so that they have a partial spherical shape; alternatively, they could, for example, also have a conical shape.
  • Each of the end regions 92, 94 is followed by a slot-shaped outlet opening 96 or 98, which are arranged offset in the direction of the high-pressure nozzle 74 relative to the longitudinal axis 100 or 102 of the second through-bores 50, 52.
  • the end portion 92 in combination with the slot-shaped outlet port 96 forms a first low-pressure nozzle 104 and the end portion 94 forms a second low-pressure nozzle 106 in combination with the slot-shaped outlet port 98.
  • Liquid is emitted from the first low-pressure nozzle 104 in the form of a first lateral flat jet 108, and from The second low-pressure nozzle 106 is discharged liquid in the form of a second lateral flat jet 110.
  • the two lateral flat jets 108 and 110 are inclined to the longitudinal axis 14 and thus to the central flat jet 76 and unite at a small distance from the high-pressure nozzle 74 with the central flat jet 76. The distance is preferably smaller than the total length of the nozzle body 46. This will be off FIG. 5 clear.
  • the nozzle body 46 has a radially outwardly projecting flange 112, which is encompassed by a driver 114 of a sleeve-shaped rotary member 116.
  • the rotary member 116 surrounds the nozzle inlet member 12 in the circumferential direction, and the cam 114 forms an end portion of the rotary member 116 that projects axially beyond the nozzle inlet member 12.
  • the rotary member 116 is rotatable about a thread 118 and axially displaceably mounted on the nozzle inlet part 12.
  • the rotary member 116 is in engagement with the flange 112, wherein the rotary member 116 is rotatable relative to the flange 112 about the longitudinal axis 14, an axial movement of the rotary member 116 but is transmitted to the flange 112.
  • the Düsenauslassteil 46 is rotatably held in the recess 18 of the nozzle inlet part 12.
  • an anti-rotation device is used in the form of a locking pin 120, which is aligned parallel to the longitudinal axis 14 and dips with a front pin portion 122 in a blind bore 124 of the nozzle body 46 and with a rear pin portion 126 in a blind bore 128 of the nozzle inlet part 12.
  • the blind bore 124 of the nozzle body 46 is aligned with the blind bore 128 of the nozzle inlet part 12.
  • the rotary member 116 If the rotary member 116 is rotated relative to the nozzle inlet part 12 about the longitudinal axis 14, it performs an axial movement, which is transmitted via the driver 114 and the flange 112 to the nozzle outlet part 16. In this way, the nozzle outlet part 16 between an in FIG. 1 shown first position and a in FIG. 2 shown second position continuously shifted back and forth. In the first position, the inlet portion 82 of the connecting nipple 78 dips into the cylindrical channel portion 38 of the inlet channel 28 and the annular bead 84 of the connecting nipple 78 is liquid-tight at the conical sealing surface of the inlet channel 28 on. This is especially true FIG. 6 clear.
  • the inlet channel 28 is only in fluid communication with the first through-hole 48 and the high-pressure nozzle 74, whereas the flow connection between the inlet channel 28 and the second through-holes 50, 52 is interrupted due to the liquid-tight contact of the annular bead 84 on the sealing surface 42 is.
  • the connecting nipple 78 an annular gap 130 free, the width of which widens continuously during the transition of the nozzle outlet part 16 from the first position to the second position. This is especially true of the FIGS. 7 and 8th clear.
  • the inlet channel 28 is in flow communication with an annular space 132 which surrounds the area of the connecting nipple 78 projecting from the nozzle body 46 in the circumferential direction and to which the second through-bores 50, 52 adjoin in the flow direction of the liquid.
  • the annular space 132 is bounded in the axial direction by the bottom wall 20 of the recess 18 and the back 80 of the nozzle body 46 and in the radial direction of the annular space 132 is limited by the connecting nipple 78 and the side wall 22 of the recess 18.
  • the rotary member 116 is surrounded by a housing 134 of the nozzle assembly 10.
  • the housing 134 is formed by a first housing half shell 136 and a second housing half shell 138, which are rotatably connected to the rotary member 116.
  • the two housing half shells 136, 138 screwed by connecting screws 140 with the rotary member 116.
  • the housing halves 136, 138 can be rotated by the user relative to the jet pipe 44 about the longitudinal axis 14 of the nozzle assembly 10.
  • the rotational movement is transmitted to the rotary member 116 via the connecting bolts 140, and by rotating the rotary member 116, the nozzle outlet member 16, as explained in detail above, relative to the nozzle inlet part 12 between the in FIG. 1 shown first position and the in FIG. 2 shown second position continuously shifted back and forth.
  • pressurized liquid which is supplied via the jet pipe 44 to the nozzle inlet part 12, which is connected in a rotationally fixed manner to the jet pipe 44, is discharged via the high-pressure nozzle 74 in the form of the central flat jet 76.
  • liquid is discharged not only via the high-pressure nozzle 74 but also via the low-pressure nozzles 104, 106, wherein the lateral flat jets 108, 110 at a small distance to the high-pressure nozzle 74 unite with the central flat jet 76.
  • the nozzle assembly 10 gives the user the ability to reproducibly adjust the pressure of the discharged liquid at a constant flow rate.
  • the user must position the two housing halves 136, 138 only in a desired rotational position, which corresponds to a specific position of the nozzle outlet part 16 relative to the nozzle inlet part 12 and thus a certain width of the annular gap 130.
  • the user has the option to choose a pressure in the range of 200 bar to about 10 bar for the liquid delivered.
  • a change in the pressure of the discharged liquid at a constant flow rate of the liquid no significant change in the jet pattern of the liquid result.
  • the positioning of the nozzle outlet member 16 may be changed by the user during operation of the nozzle assembly 10, i. the nozzle outlet part 16 can be displaced while being pressurized with liquid under pressure.

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  • Nozzles (AREA)

Claims (22)

  1. Ensemble de buses pourvu d'une partie d'entrée de buse (12), qui présente un canal d'entrée (28) pour un liquide sous pression, et d'une partie de sortie de buse (16), qui peut coulisser en va-et-vient en continu par rapport à la partie d'entrée de buse (12) entre une première position et une deuxième position et qui présente une buse haute pression (74) réalisée sous la forme d'une buse à jet plat et au moins une buse basse pression (104, 106) réalisée sous la forme d'une buse à jet plat, dans lequel, dans la première position, seule la buse haute pression (74) est en liaison fluidique avec le canal d'entrée (28) et dans lequel, dans la deuxième position, la buse haute pression (74) et la ou les buses basse pression (104, 106) sont en liaison fluidique avec le canal d'entrée (28), caractérisé en ce que la au moins une buse basse pression (104, 106) est agencée de manière radialement décalée de la buse haute pression (74) et la partie de sortie de buse (16) présente un embout de raccordement (78) qui, indépendamment de la position de la partie de sortie de buse (16), est en liaison fluidique avec la buse haute pression (74) et qui, dans la première position de la partie de sortie de buse (16), interrompt une liaison fluidique du canal d'entrée (28) avec la au moins une buse basse pression (104, 106) et qui, lors du passage de la partie de sortie de buse (16) de la première position dans la deuxième position, libère un espace annulaire (130) évasé et de largeur réglable, par l'intermédiaire duquel le canal d'entrée (28) est en liaison fluidique avec la au moins une buse basse pression (104, 106).
  2. Ensemble de buses selon la revendication 1, caractérisé en ce que la direction de sortie de liquide de la au moins une buse basse pression (104, 106) est inclinée vers la direction de sortie de liquide de la buse haute pression (74).
  3. Ensemble de buses selon la revendication 1 ou 2, caractérisé en ce que l'embout de raccordement (78), dans la première position de la partie de sortie de buse (16), s'applique de manière étanche au liquide contre une partie de sortie (40) du canal d'entrée (28) .
  4. Ensemble de buses selon la revendication 1, 2 ou 3, caractérisé en ce que le liquide s'écoulant à travers la fente annulaire (130) peut être amené à la au moins une buse basse pression (104, 106) sans inversement du sens d'écoulement.
  5. Ensemble de buses selon l'une quelconque des revendications précédentes, caractérisé en ce que l'embout de raccordement (78) est orienté de manière à être aligné à la buse haute pression (74).
  6. Ensemble de buses selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de sortie de buse (16) présente un corps de buse (46) qui forme la buse haute pression (74) et la au moins une buse basse pression (104, 106).
  7. Ensemble de buses selon la revendication 6, caractérisé en ce que l'embout de raccordement (78) fait saillie d'une face arrière (80) du corps de buse (46) tournée vers le canal d'entrée (28).
  8. Ensemble de buses selon la revendication 6 ou 7, caractérisé en ce que l'embout de raccordement (78) est enfoncé dans le corps de buse (74).
  9. Ensemble de buses selon l'une des revendications 3 à 8, caractérisé en ce que la partie de sortie (40) du canal d'entrée (28) présente une surface d'étanchéité (42) s'élargissant de manière conique dans le sens d'écoulement du liquide, contre laquelle l'embout de raccordement (78) s'applique de manière étanche au liquide dans la première position de la partie de sortie de buse (16).
  10. Ensemble de buses selon la revendication 9, caractérisé en ce que l'embout de raccordement (78) présente un bourrelet annulaire (84) qui s'applique de manière étanche au liquide contre la surface d'étanchéité (42) dans la première position de la partie de sortie de buse (16).
  11. Ensemble de buses selon la revendication 10, caractérisé en ce que la surface du bourrelet annulaire (84) est courbée en forme d'arc de cercle.
  12. Ensemble de buses selon la revendication 10 ou 11, caractérisé en ce que l'embout de raccordement (78) présente une partie d'entrée (82) agencée en amont du bourrelet annulaire (84), qui pénètre, dans la première position de la partie de sortie de buse (16), dans une partie de canal cylindrique (38) du canal d'entrée (28) .
  13. Ensemble de buses selon la revendication 12, caractérisé en ce que le diamètre extérieur de la partie d'entrée (82) s'amincit à mesure que l'écart avec le bourrelet annulaire (84) augmente.
  14. Ensemble de buses selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de sortie de buse (16) présente un premier canal de passage (48) et au moins un deuxième canal de passage (50, 52), qui sont agencés parallèlement l'un à l'autre, dans lequel la buse haute pression (74) est agencée à l'extrémité aval du premier canal de passage (48) et dans lequel la au moins une buse basse pression (104, 106) est agencée à l'extrémité aval du au moins un deuxième canal de passage (50, 52).
  15. Ensemble de buses selon la revendication 14, caractérisé en ce que l'embout de raccordement (78) pénètre dans le premier canal de passage (48).
  16. Ensemble de buses selon la revendication 14 ou 15, caractérisé en ce que la buse haute pression (74) est réalisée sous la forme de la zone d'extrémité (62), s'amincissant en continu dans le sens d'écoulement du liquide, du premier canal de passage (48), dans lequel la zone d'extrémité (62) présente deux élargissements (64, 66) en forme de poche et diamétralement opposés, dans le prolongement desquels se situe une ouverture de sortie (78) circulaire, dans le sens d'écoulement du liquide.
  17. Ensemble de buses selon la revendication 14, 15 ou 16, caractérisé en ce que la au moins une buse basse pression (104, 106) est réalisée sous la forme d'une zone d'extrémité (92, 94), s'amincissant en continu dans le sens d'écoulement du liquide, d'un deuxième canal de passage (50, 52), zone dans le prolongement de laquelle se situe une ouverture de sortie (96, 98) en forme de fente, dans le sens d'écoulement du liquide, dans lequel l'ouverture de sortie en forme de fente (96, 98) est ménagée de manière décalée de l'axe longitudinal (100, 102) du deuxième canal de passage (50, 52) en direction de la buse haute pression (74).
  18. Ensemble de buses selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de sortie de buse (16) comprend au moins deux buses basse pression (104, 106) agencées de manière symétrique par rapport à la buse haute pression (74).
  19. Ensemble de buses selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie d'entrée de buse (12) présente un évidement (18) dans lequel le canal d'entrée (28) débouche et dans lequel la partie de sortie de buse (16) est retenue coulissante.
  20. Ensemble de buses selon la revendication 19, caractérisé en ce que la partie de sortie de buse (16) est retenue solidaire en rotation dans l'évidement (18) .
  21. Ensemble de buses selon la revendication 20, caractérisé en ce que l'ensemble de buses (10) comprend une partie rotative (116), qui est montée sur la partie d'entrée de buse (12) de manière coulissante axialement et rotative par l'intermédiaire d'un filet (118), et qui présente un entraîneur (114) permettant de faire coulisser la partie de sortie de buse (16).
  22. Ensemble de buses selon la revendication 21, caractérisé en ce que l'ensemble de buses (10) comprend deux demi-coques de logement (136, 138), qui sont reliées de manière solidaire en rotation à la partie rotative (116).
EP14777676.9A 2014-10-02 2014-10-02 Ensemble de buses pour liquide Active EP3200928B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/071211 WO2016050314A1 (fr) 2014-10-02 2014-10-02 Ensemble de buses pour liquide

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EP3200928A1 EP3200928A1 (fr) 2017-08-09
EP3200928B1 true EP3200928B1 (fr) 2018-12-05

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EP14777676.9A Active EP3200928B1 (fr) 2014-10-02 2014-10-02 Ensemble de buses pour liquide

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US (1) US20170203310A1 (fr)
EP (1) EP3200928B1 (fr)
CN (1) CN107073488B (fr)
HU (1) HUE041634T2 (fr)
WO (1) WO2016050314A1 (fr)

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US11141742B2 (en) 2016-11-16 2021-10-12 Dlhbowles, Inc. Cold weather low flow miniature spray nozzle assembly and method
CN108014935B (zh) * 2017-11-08 2019-12-27 江苏苏美达五金工具有限公司 一种压力线性调节组合喷嘴及高压清洗设备
US11035511B2 (en) * 2018-06-05 2021-06-15 Divergent Technologies, Inc. Quick-change end effector
WO2020199025A1 (fr) * 2019-03-29 2020-10-08 深圳市大疆创新科技有限公司 Ensemble tête de pulvérisation, dispositif de pulvérisation et procédé l'utilisant, dispositif de commande et véhicule aérien sans pilote

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IT1245146B (it) * 1991-02-11 1994-09-13 Faip Off Mecc Ugello perfezionato per macchine idropulitrici ad alta pressione e simili con bocche di erogazione allineate
JPH08501465A (ja) * 1992-09-15 1996-02-20 スンドホルム，ゲラン 液体の霧および液体の噴射を交互させることによる消火の方法および装置
DE4303762A1 (de) * 1993-02-09 1994-08-11 Kaercher Gmbh & Co Alfred Flachstrahldüse für ein Hochdruckreinigungsgerät
DE4327155C1 (de) * 1993-08-12 1994-10-06 Kaercher Gmbh & Co Alfred Strahlrohr fuer ein Hochdruckreinigungsgeraet
DE10257783B3 (de) * 2002-12-11 2004-03-18 Alfred Kärcher Gmbh & Co. Kg Düsenanordnung für ein Hochdruckreinigungsgerät
DE102011002724A1 (de) * 2011-01-14 2012-07-19 Alfred Kärcher Gmbh & Co. Kg Umschaltbare Düsenanordnung
CN202479066U (zh) * 2012-04-04 2012-10-10 周洋 一种雾化喷头

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Publication number Publication date
WO2016050314A1 (fr) 2016-04-07
EP3200928A1 (fr) 2017-08-09
HUE041634T2 (hu) 2019-05-28
CN107073488B (zh) 2018-12-11
US20170203310A1 (en) 2017-07-20
CN107073488A (zh) 2017-08-18

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