EP2663404B1 - Ensemble buse réversible - Google Patents

Ensemble buse réversible Download PDF

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Publication number
EP2663404B1
EP2663404B1 EP11802051.0A EP11802051A EP2663404B1 EP 2663404 B1 EP2663404 B1 EP 2663404B1 EP 11802051 A EP11802051 A EP 11802051A EP 2663404 B1 EP2663404 B1 EP 2663404B1
Authority
EP
European Patent Office
Prior art keywords
piston
nozzle arrangement
liquid dispensing
dispensing part
liquid
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
EP11802051.0A
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German (de)
English (en)
Other versions
EP2663404A1 (fr
Inventor
Kai Trautwein
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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Filing date
Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP2663404A1 publication Critical patent/EP2663404A1/fr
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Publication of EP2663404B1 publication Critical patent/EP2663404B1/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
    • B05B1/1627—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 gate valve, a sliding valve or a cock
    • B05B1/1636—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 gate valve, a sliding valve or a cock by relative rotative movement of the valve elements
    • B05B1/1645—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 gate valve, a sliding valve or a cock by relative rotative movement of the valve elements the outlets being rotated during selection
    • B05B1/1654—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 gate valve, a sliding valve or a cock by relative rotative movement of the valve elements the outlets being rotated during selection about an axis parallel to the liquid passage in the stationary valve element
    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a gate valve, a sliding valve or a cock
    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/326—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve being a gate valve, a sliding valve or a cock

Definitions

  • the invention relates to a switchable nozzle arrangement for dispensing a pressurized liquid, in particular for a high-pressure cleaning device, comprising a liquid supply part with an inlet channel, which opens into a recess in which a piston is slidably mounted with a passage, and a liquid discharge part, the plurality of flow passages having different outlet openings and is rotatable relative to the liquid supply part about an axis of rotation, wherein the piston with its front side with the interposition of a sealing ring to a back of the liquid dispensing part can be applied, wherein at the back of the liquid dispensing part and on the front side of the piston at least one locking projection and a plurality of locking recesses are arranged and the liquid discharge part by rotation about the rotational axis in several rotational positions with the piston can be latched, wherein in the individual rotational positions in each case a flow S trimlass connectable to the passageway and the sealing ring can each be applied to one of a plurality of sealing surfaces.
  • a switchable nozzle arrangement of the type mentioned is used. It comprises a liquid supply part with an inlet channel, which opens into a recess of the liquid supply part. In the recess, a piston is slidably mounted with a passage.
  • the nozzle assembly also includes a liquid dispensing part having a plurality of flow passages including different outlet openings. The outlet openings may have different cross-sectional profiles and / or different diameters. Pressurized liquid may be supplied to the liquid discharge part via the input port of the liquid supply part and the passageway of the piston.
  • the piston is with its the liquid discharge part facing the end facing the piston of the liquid dispensing part can be applied, wherein between the back and the end face a sealing ring is arranged.
  • At least one latching projection and a plurality of latching recesses are arranged on the rear side of the fluid delivery part and the front side of the piston.
  • the liquid discharge part can be rotated relative to the liquid supply part about an axis of rotation and is latched by means of the at least one latching projection and the latching recesses in a plurality of rotational positions with the piston, wherein the sealing ring can each be applied to one of a plurality of sealing surfaces.
  • Such switchable nozzle arrangements are used in particular in high-pressure cleaning devices. For example, they can be connected to a spray gun that is connected to the high-pressure cleaner via a pressure hose.
  • a switchable nozzle arrangement is integrated in a multi-jet tube which can be connected via a spray gun and a pressure hose to the pressure outlet of the high-pressure cleaning device.
  • a switchable nozzle arrangement of the type mentioned is from the document US 3,516,611 known.
  • the latching projection is designed in the form of a protruding from the end face of the piston collar, which forms an extension of the passage channel and is surrounded by the sealing ring.
  • the detent recesses of Liquid dispensing part are designed as conical entrance areas of the flow passages.
  • the collar-like latching projection dips into a cone-shaped input area.
  • the hand shower has a liquid supply part with an input channel, which opens into a recess.
  • a control disc slidably mounted against the force of a spring.
  • the control disk has a plurality of first functional bores.
  • the hand shower also includes a liquid dispensing member having a plurality of guide channels each leading to an exit opening.
  • a profile sealing ring is positioned, which has a plurality of second functional bores.
  • the liquid discharge part is rotatable relative to the control disk together with the profile sealing ring and has on its rear side facing the control disk a plurality of projections which dive in predetermined rotational positions in recesses, which are arranged on the liquid discharge part facing the front side of the control disk.
  • the guide channels and guide bores of the liquid dispensing part are designed such that the liquid in each of the predetermined rotational positions can flow through one of the guide bores and one of the guide channels.
  • Object of the present invention is to develop a switchable nozzle assembly of the type mentioned in such a way that it has a longer life.
  • the at least one locking projection has a greater or lesser radial distance from the axis of rotation of the liquid dispensing member than the sealing surfaces.
  • the switchable nozzle arrangement according to the invention there is no risk that the sealing surfaces to which the sealing ring can be applied, are damaged by the locking projections, because the at least one locking projection has a greater or lesser radial distance from the axis of rotation of the liquid dispensing member than the sealing surfaces. This ensures that the at least one locking projection does not reach the sealing surfaces during rotation of the liquid dispensing part and thus can not damage it.
  • the switchable nozzle arrangement according to the invention is therefore characterized by a longer service life.
  • At least one latching projection has a greater radial distance from the axis of rotation of the liquid discharge part than the sealing surfaces. Based on the axis of rotation of the locking projection is thus positioned in the radial direction outside of the sealing surfaces.
  • At least one latching projection has a smaller radial distance from the axis of rotation of the fluid delivery part than the sealing surfaces. Also by such positioning of the locking projection damage to the sealing surfaces by the locking projection during rotation of the liquid dispensing part is reliably prevented.
  • the axis of rotation of the liquid dispensing part is aligned colinearly to the longitudinal axis of the piston.
  • the piston is displaceable in the recess of the liquid supply part in the direction of its longitudinal axis back and forth.
  • the Longitudinal axis of the piston thus defines its axial displacement direction.
  • the longitudinal axis of the piston also defines the axis of rotation of the liquid dispensing part, which is thus rotatable about the longitudinal axis of the piston. This allows a particularly compact design of the nozzle assembly.
  • the at least one latching projection and / or the latching recesses have at least one oblique surface oriented obliquely to the direction of rotation of the fluid delivery part.
  • the provision of the inclined surfaces facilitates the release of the locking connection between the piston and the liquid dispensing part.
  • both the at least one latching projection and the latching recesses each comprise at least one inclined surface.
  • the at least one latching projection extends in the direction of rotation of the liquid dispensing part. This increases the mechanical stability of the locking projection. It can be provided, for example, that extends the at least one locking projection in the direction of rotation of the liquid dispensing part over an angular range of at least 20 °. In particular, an extension of the at least one latching projection in the direction of rotation of the liquid dispensing part over an angular range of 25 ° to 30 ° is preferred.
  • the nozzle arrangement according to the invention has only a single latching projection, which dips in different rotational positions of the liquid discharge part in each case in a complementarily configured latching recess.
  • the nozzle arrangement comprises a plurality of latching projections which extend along a pitch circle surrounding the sealing surfaces.
  • the center of the pitch circle is conveniently given by the axis of rotation of the liquid dispensing part.
  • the nozzle arrangement has a plurality of latching projections, which are distributed uniformly along the pitch circle.
  • the number of latching projections is identical to the number of latching recesses. In the rotational positions of the liquid dispensing part, in each of which a flow passage is fluid-tightly connected to the passage channel of the piston, thus immersed in each locking recess a latching projection. This increases the mechanical stability and thus the service life of the nozzle arrangement.
  • the number of rotational positions in which the liquid discharge part is latched to the piston identical to the number of flow passages of the liquid discharge part. This ensures that pressurized fluid can be dispensed through a flow passage in each detent position of the fluid delivery part.
  • the liquid discharge part thus has no intermediate positions, in which only a latching connection with the piston of the liquid supply part is achieved, but no liquid can be dispensed. This facilitates handling of the nozzle assembly.
  • the latching projections are arranged on the end face of the piston and the complementary formed locking recesses on the back of the liquid discharge part.
  • the latching projections are preferably positioned on the rear side of the liquid dispensing part and the latching depressions on the end face of the piston.
  • the liquid discharge part to a distributor element and a nozzle body, which are non-rotatably connected to each other, wherein the piston can be applied with its front side to the rear side of the distributor element facing him and the distributor element has a plurality of distribution channels, to which each one output channel of the nozzle body connects.
  • the flow passages of the liquid discharge part thus become each formed by a distribution channel of the distributor element and an output channel of the nozzle body.
  • the distributor element and the nozzle body are conveniently connectable pluggable with each other. This facilitates the assembly of the liquid dispensing part.
  • At least one distributor channel of the distributor element has an inlet section and an outlet section, which are arranged offset radially relative to one another with respect to the axis of rotation of the liquid dispensing section and are connected to one another via a connecting section.
  • the input section and / or the output section are aligned parallel to the axis of rotation of the liquid dispensing part.
  • the connecting portion preferably extends radially to the axis of rotation of the liquid dispensing part.
  • the passage of the piston is conveniently aligned obliquely to the axis of rotation of the liquid dispensing part. It can be provided, for example, that the passage channel has a first channel portion which extends into the region of the axis of rotation of the liquid dispensing part and to which a second channel section adjoins, which opens in an offset from the axis of rotation of the liquid dispensing portion in the end face of the piston ,
  • the sealing ring is conveniently arranged in a groove which is formed in the end face of the piston and surrounds the opening in the end face of the piston end portion of the passage channel in the circumferential direction.
  • the height of the at least one latching projection is smaller than the material thickness of the sealing ring in a particularly preferred embodiment of the switchable nozzle arrangement according to the invention.
  • the Piston displaced during rotation of the liquid dispensing part in the liquid dispensing part facing away from the rear direction, so that the at least one locking projection is released from the associated locking recess. If the height of the latching projection is less than the material thickness of the sealing ring, it is ensured that the piston only moves so far backwards during rotation of the liquid delivery part that, although the latching connection between the piston and the liquid discharge part is released, the sealing ring is not sufficient the him receiving annular groove can move out. This ensures that the sealing ring can not fall out of the annular groove during rotation of the liquid dispensing part, because this would require the height of the locking projection and thus the displacement of the piston be greater than the material thickness of the sealing ring.
  • the piston expands gradually in the direction of the liquid dispensing part.
  • the rear side of the piston remote from the liquid discharge part has a smaller area than the end face of the piston facing the liquid discharge part.
  • the size of the back of the piston in combination with the pressure of the fluid acting on the piston, determines the force with which the piston is pressed against the back of the fluid delivery member upon application of pressurized fluid. If the end face of the piston has a larger area than its rear side, the pressure exerted by the piston on the liquid discharge part can be reduced.
  • the liquid discharge part dips into the recess of the liquid supply part and is surrounded in its dipping into the recess region of a sealing ring which rests against an inner wall of the recess.
  • Such a configuration makes it possible to fluidly connect the liquid discharge member to the liquid supply member regardless of the position occupied by the longitudinally displaceable piston within the recess.
  • the switchable nozzle arrangement according to the invention is preferably used in a multi-jet tube.
  • the invention is therefore also directed to a multi-jet tube for a high-pressure cleaner with such a nozzle assembly.
  • the multi-jet tube conveniently comprises a sleeve which is rotatably mounted about a longitudinal axis of the multi-jet tube to a supply pipe and surrounds the switchable nozzle assembly, wherein the sleeve is rotatably connected to the liquid discharge member.
  • the supply pipe can for example be connected to a spray lance and for this purpose comprise a connecting device, as is known per se to those skilled in the art, for example a bayonet connection device.
  • the pressurized liquid can be supplied to the switchable nozzle assembly.
  • the nozzle assembly is positioned in a sleeve of the multi-jet tube, which is rotatably mounted on the supply pipe and can be rotated about the longitudinal axis of the multi-jet tube. Since the sleeve is non-rotatably connected to the liquid discharge part of the nozzle assembly, the user can twist the liquid discharge part of the nozzle assembly by turning the sleeve and thereby select the outlet opening he desires to discharge the liquid.
  • the multi-jet tube 10 has a feed pipe 12 which comprises a bayonet connection member 16 at a first end region 14. With the help of the bayonet connecting member 16, the multi-jet tube 10 can be connected to a spray lance, which is in flow connection via a pressure hose to the pressure outlet of a high-pressure cleaner, so that the multi-jet tube 10 under pressure liquid, in particular a pressurized cleaning liquid, can be supplied.
  • a sleeve 18 of the multi-jet tube 10 is rotatably mounted about a longitudinal axis 20 of the multi-jet tube 10.
  • the sleeve surrounds a switchable nozzle arrangement 22 according to the invention, which adjoins the supply pipe 12 in the flow direction 24 of the liquid under pressure.
  • the nozzle arrangement 22 comprises a liquid supply part 25, which in the illustrated embodiment is designed as a pipe piece 26, and a liquid discharge part 27, which comprises a distributor element 63 and a nozzle body 89, which are explained in more detail below.
  • the supply pipe 12 is immersed with a second end portion 28 in a rear end portion 30 of the pipe section 26 a.
  • the second end region 28 is surrounded by a first sealing ring 32, which ensures a fluid-tight connection of the supply pipe 12 with the pipe section 26.
  • a front end section 34 of the pipe section 26 has a recess 36, which widens in the direction away from the feed pipe 12 via a step 38 and a conical surface 39. This is especially true of the FIGS. 6 and 7 clear.
  • the pipe section 26 defines a co-linear with the longitudinal axis 20 aligned input channel 40, which opens into the recess 36.
  • To prevent rotation of the piston 42 comprises a lateral flattening 43, with which it rests against a flat wall portion 45 of the recess 36 in the direction of the longitudinal axis 20 slidably.
  • the piston 42 has a rear side 47 facing the input channel 40 and an end side 48 facing away from the input channel 40.
  • a first piston section 49 extends from the rear side 47 to a shoulder 50, via which the piston 42 expands in stages.
  • the shoulder 50 is adjoined by a second piston portion 51, which has the lateral flattening 43 and extends to the end face 48.
  • the piston 42 is surrounded by a second sealing ring 52 which bears tightly against the inner wall 54 of the recess 36 and can be displaced together with the piston 42 in the direction of the longitudinal axis 20.
  • the piston 52 comprises a through-channel 56 which extends from the rear side 47 to the front side 48 and is oriented obliquely to the longitudinal axis 20.
  • a first, conically configured channel section 57 of the through-channel 56 starts from the rear side 47, wherein it extends in the radial direction into the region of the longitudinal axis 20. This is going out FIG. 2 clear.
  • Connected to the first channel section 57 in the flow direction 24 is a second channel section 58 of the passage channel 56, which opens into the end face 58 in a region arranged radially offset from the longitudinal axis 20.
  • In the mouth region of the second channel portion 58 is surrounded by an integrally formed in the end face 58 annular groove 60 in which a third sealing ring 61 is arranged.
  • the distributor element 63 of the nozzle arrangement 22 adjoins the piston 42 and, with a rear end region 64 facing the piston 42, dips into the recess 36 of the pipe section 26 and is surrounded by a fourth sealing ring 65.
  • the fourth sealing ring 65 ensures a fluid-tight connection between the tube piece 26 and the distributor element 63, whereby the distributor element 63 can be rotated relative to the tube piece 26 about the longitudinal axis 20.
  • the distributor element 63 is rotatably and axially immovably connected.
  • the distributor element 63 has a rear side 67 facing the piston 42, to which the piston 42 with its front side 48 can be placed.
  • the distributor element 63 comprises the distributor element 63 a total of five distribution channels 69, 70, 71, 72, 73, which extend from the back 67 to a piston 42 facing away from the end face 75 of the distributor element 63.
  • All distribution channels 69 to 73 have at the back 67 of the distributor element 63 each have an orifice 77, 78, 79, 80 and 81, respectively.
  • the orifices 77 to 81 are arranged distributed uniformly over a first pitch circle 83, whose center of the circle is predetermined by the intersection of the longitudinal axis 20 with the back 67 of the distributor element 63.
  • the first to fourth distribution channels 69 to 72 each comprise an input section 85 extending parallel to the longitudinal axis 20 and extending from the respective orifice 77, 78, 79 or 80 and extending to a connection section 86. which extends radially to the longitudinal axis 20.
  • an output section 87 extending parallel to the longitudinal axis 20 adjoins the connecting section 86 and is positioned radially outward relative to the longitudinal axis 20 with respect to the input section 85.
  • the fifth distribution channel 73 runs parallel to the longitudinal axis 20.
  • the nozzle element 89 of the nozzle arrangement 22 adjoins the distributor element 63 in the flow direction 24 of the liquid under pressure.
  • the nozzle body 89 is rotatably and pluggable connected to the distributor element 63 and comprises a total of five output channels, each of which is connected to a distribution channel 69 to 73 of the distributor element 63, wherein in the drawing only one output channel 91 is shown. All outlet channels have an outlet opening 94, 95, 96, 97 and 98, respectively, at their end facing away from the distributor element 63, that is to say at the end face 93 of the nozzle body 89 facing away from the distributor element 63.
  • the discharge port 98 which is in fluid communication with the fifth distribution channel 73 of the distributor element 63 via an outlet channel, is arranged on the front side 93 in the middle of the longitudinal axis 20, this becomes off FIG. 3 clear.
  • the output channel adjoining the fifth distributor channel 73 forms for this purpose in the nozzle body 89 a pressure chamber, not shown in the drawing, which extends around the longitudinal axis 20 and has the central outlet opening 98.
  • the remaining outlet openings 94 to 97 which in each case are in flow communication via an outlet channel of the nozzle body 89 with the distributor channels 69, 70, 71 and 72, are positioned at the end face 93 at a radial distance from the longitudinal axis 20.
  • the outlet openings 94 to 98 are each designed differently, so that via the respective outlet opening 94 to 98 of the multi-jet tube 20 dispensed liquid has different beam shapes, such as a spot beam, a broad jet or a flat jet.
  • the distributor element 63 in combination with the nozzle body 89 forms the liquid discharge part 27 of the nozzle arrangement 22, which together with the sleeve 18 of the multi-jet tube 10 can be rotated about the longitudinal axis 20 relative to the liquid supply part 25 of the nozzle arrangement 22.
  • an orifice 77, 78, 79, 80 or 81 can be aligned in each case in alignment with the end region of the through-channel 56 of the piston 42 that opens into the end face 48 of the piston 42, so that the respective distributor channel and the one located in it Flow direction 24 subsequent output channel pressurized fluid via the supply pipe 12, the input channel 40 of the pipe section 26 and the passageway 56 of the piston 42 can be supplied.
  • a plurality of locking projections in the illustrated embodiment five locking projections 101, 102, 103, 104 and 105 are arranged on the rear side 67 of the distributor part 63, which uniformly over a second pitch circle 107 are positioned distributed.
  • the center of the second pitch circle 107 as well as the center of the first pitch circle 83 are defined by the intersection of the longitudinal axis 20 with the back 67 of the distributor element 63.
  • the diameter of the second pitch circle 107 is chosen to be significantly larger than the diameter of the first pitch circle 83, which defines the position of the mouth openings 77 to 81 of the distribution channels 69 to 73.
  • the orifices 77 to 81 are each surrounded by an annular sealing surface 109, 110, 111, 112 and 113, respectively. If one of the orifices 77 to 81 is aligned with the end region of the passage channel 56 which opens into the end face 48 of the piston 42, then the third sealing ring 61 lies against the sealing surface 109, 110 surrounding the respective orifice 77, 78, 79, 80 or 81 , 111, 112 or 113 close to each other, so that a flow-tight connection between the passageway 56 of the piston 42 and the respective distribution channel 69, 70, 71, 72 and 73 of the distributor element 63 is ensured.
  • the diameter of the second pitch circle 107 is now selected to be so large that the locking projections 101 to 105, which are distributed uniformly over the second pitch circle 107, are arranged outside the sealing surfaces 109 to 113.
  • the locking projections 101 to 105 thus have in the illustrated embodiment, a greater radial distance from the axis of rotation 20 as the sealing surfaces 109 to 113th
  • the latching projections 101 to 105, a latching recess 115, 116, 117, 118 and 119 respectively assigned to the end face 48 of the piston 42.
  • the latching recesses 115 to 119 are distributed uniformly over a third pitch circle 120, whose diameter corresponds to the second pitch circle 107 and whose center is predetermined by the intersection of the longitudinal axis 20 with the end face 48 of the piston 42.
  • the latching projections 101 to 105 are each configured identically and the latching recesses 115 to 118 are designed to be complementary to the latching projections 101 to 105.
  • the detent recess 119 opens into the lateral flattening 43 of the piston 42 and is therefore configured only in the form of a portion of the remaining detent recesses 115 to 118. This is going out FIG. 5 clear.
  • All locking projections 101 to 105 have in the circumferential direction of the second pitch circle 107 and thus in the direction of rotation of the sleeve 18 and the non-rotatably connected to the liquid dispensing part 27 each have two inclined surfaces 122, 123 and the locking recesses 115 to 118 are provided with correspondingly shaped inclined surfaces 125, 126.
  • the detent recess 119 has only an inclined surface 127, since it merges with its end facing away from the oblique surface 127 in the lateral flattening 143.
  • the piston 42 is from the liquid in the flow direction 24th displaced forward until the end face 48 comes to rest on the locking projections 101 to 105 of the distributor element 63.
  • the distributor element 63 By rotating the distributor element 63 by means of the sleeve 18, the user can transfer the distributor element 63 into a rotational position in which the latching projections 101 to 105 dive into the associated latching recesses 115 to 119 and thereby produce a latching connection between the piston 42 and the distributor element 63, as in FIG this in FIG. 6 is shown.
  • the pressurized fluid can be discharged via one of the outlet ports 94 to 98 with the user-selected jet shape.
  • the inclined surfaces slide 122, 123 of the locking projections 101 to 105 along the associated inclined surfaces 125, 126 and 127 of the locking recesses 115 to 119, wherein the piston 42nd is moved so far in the direction away from the distributor element 63 direction until the locking recesses 115 to 119 fully release the locking projections 101 to 105.
  • the height of the latching projections 101 to 105 is selected to be lower than the material thickness of the third sealing ring 61, which is arranged between the piston 42 and the distributor element 63. This ensures that the third sealing ring 61 when rotating the distributor element 63 can not fall out of the annular groove 60 which removes it.

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Claims (13)

  1. Ensemble buse réversible destiné à distribuer un liquide sous pression, en particulier pour un appareil de nettoyage haute pression, comprenant une pièce d'alimentation en liquide (25), dotée d'un canal d'entrée (40) qui débouche dans un évidement (36) dans lequel est monté, de manière mobile, un piston (42) présentant un canal de passage (56), ainsi qu'une pièce de distribution de liquide (27), qui présente plusieurs passages d'écoulement (69, 70, 71, 72, 73) dotés de différentes ouvertures d'évacuation (94, 95, 96, 97, 98) et qui peut être amenée en rotation autour d'un axe de rotation (20) par rapport à la pièce d'alimentation en liquide (25), la face frontale (48) du piston (42) pouvant se placer, en interposant une bague d'étanchéité (61), contre une face arrière (67) de la pièce de distribution de liquide (27), au moins une partie saillante d'encliquetage (101, 102, 103, 104, 105) ainsi que plusieurs creux d'encliquetage (115, 116, 117, 118, 119) étant disposés sur la face arrière (67) de la pièce de distribution de liquide (27) et sur la face frontale (48) du piston (42) et la pièce de distribution de liquide (27) pouvant s'encliqueter avec le piston (42) par rotation autour de l'axe de rotation (20) dans plusieurs positions de rotation, un passage d'écoulement (69, 70, 71, 72, 73), dans chaque position de rotation, pouvant à chaque fois être raccordé au canal de passage (56) et la bague d'étanchéité (61) pouvant se placer à chaque fois contre une parmi plusieurs surfaces d'étanchéité (109, 110, 111, 112, 113), la ou les parties saillantes d'encliquetage (101 à 105) présentant une distance radiale plus grande ou plus petite par rapport à l'axe de rotation (20) de la pièce de distribution de liquide (63, 89) que les surfaces d'étanchéité (109 à 113).
  2. Ensemble buse réversible selon la revendication 1, caractérisé en ce que l'axe de rotation (20) de la pièce de distribution de liquide (27) est orienté de manière colinéaire par rapport à l'axe longitudinal du piston (42).
  3. Ensemble buse réversible selon la revendication 1 ou 2, caractérisé en ce que la ou les parties saillantes d'encliquetage (101 à 105) et/ou les creux d'encliquetage (115 à 119) comprennent au moins une surface inclinée (122, 123 ; 125, 126, 127) orientée de manière oblique par rapport au sens de rotation de la pièce de distribution de liquide (27).
  4. Ensemble buse réversible selon la revendication 1, 2 ou 3, caractérisé en ce que la ou les parties saillantes d'encliquetage (101 à 105) s'étendent dans le sens de rotation de la pièce de distribution de liquide (27).
  5. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que l'ensemble buse réversible (22) comprend plusieurs parties saillantes d'encliquetage (101 à 105), qui s'étendent le long d'un cercle (107) primitif de référence qui entoure les surfaces d'étanchéité (109 à 113).
  6. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que le nombre de parties saillantes d'encliquetage (101 à 105) est identique au nombre de creux d'encliquetage (115 à 119).
  7. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que le nombre de positions de rotation, dans lesquelles la pièce de distribution de liquide (27) est encliquetée avec le piston (42), est identique au nombre des passages d'écoulement de la pièce de distribution de liquide (63, 89).
  8. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties saillantes d'encliquetage (101 à 105) sont disposées sur la face arrière (67) de la pièce de distribution de liquide (27).
  9. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce de distribution de liquide (27) comprend un élément de répartition (63) et un corps de buse (89), qui sont reliés l'un à l'autre de manière solidaire en rotation, la face frontale (48) du piston (42) pouvant se placer contre la face arrière (67), tournée vers ledit piston, de l'élément de répartition (63) et l'élément de répartition (63) comprenant plusieurs canaux de répartition (69 à 73) auxquels se raccordent à chaque fois un canal de sortie (91) du corps de buse (89).
  10. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que la hauteur de la ou des parties saillantes d'encliquetage (101 à 105) est inférieure à l'épaisseur de matériau de la bague d'étanchéité (61).
  11. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que le piston (42) s'élargit graduellement en direction de la pièce de distribution de liquide (27).
  12. Ensemble buse réversible selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce de distribution de liquide (27) s'enfonce dans l'évidement (36) et est entourée dans sa zone (64) s'enfonçant dans l'évidement (36) par une bague d'étanchéité (65) qui s'applique de manière étanche contre une paroi intérieure (54) de l'évidement (36).
  13. Tuyau à jets multiples pour un appareil de nettoyage à haute pression comprenant un ensemble buse réversible (22) selon l'une quelconque des revendications précédentes et un manchon (18), qui est monté sur un tuyau d'alimentation (12) de manière à pouvoir tourner autour d'un axe longitudinal (20) du tuyau à jets multiples (10) et qui entoure l'ensemble buse réversible (22), le manchon étant relié solidaire en rotation à la pièce de distribution de liquide (27).
EP11802051.0A 2011-01-14 2011-12-15 Ensemble buse réversible Active EP2663404B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011002724A DE102011002724A1 (de) 2011-01-14 2011-01-14 Umschaltbare Düsenanordnung
PCT/EP2011/072964 WO2012095238A1 (fr) 2011-01-14 2011-12-15 Ensemble buse réversible

Publications (2)

Publication Number Publication Date
EP2663404A1 EP2663404A1 (fr) 2013-11-20
EP2663404B1 true EP2663404B1 (fr) 2017-06-07

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EP11802051.0A Active EP2663404B1 (fr) 2011-01-14 2011-12-15 Ensemble buse réversible

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EP (1) EP2663404B1 (fr)
DE (1) DE102011002724A1 (fr)
WO (1) WO2012095238A1 (fr)

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EP3939705A1 (fr) 2020-07-14 2022-01-19 Andreas Stihl AG & Co. KG Appareil de nettoyage haute pression

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HUE041634T2 (hu) * 2014-10-02 2019-05-28 Kaercher Alfred Se & Co Kg Szelepelrendezés folyadékok számára
DE202015001686U1 (de) 2015-03-05 2016-06-07 Neoperl Gmbh Strahlregler
DE102018103426A1 (de) 2018-02-15 2019-08-22 Alfred Kärcher SE & Co. KG Umschaltbare Hochdruckdüsenanordnung
DE102019120367A1 (de) * 2019-07-29 2021-02-04 Alfred Kärcher SE & Co. KG Umschaltbare Düsenanordnung

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US2388093A (en) * 1942-10-08 1945-10-30 Smith Frank Liquid delivery apparatus
US3377028A (en) 1966-04-05 1968-04-09 L & A Products Inc Self-sealing connector for multiaperture nozzle
US3516611A (en) 1968-06-04 1970-06-23 Spraying Systems Co Indexable sprayer with plural nozzle orifices
DE29508302U1 (de) * 1995-05-19 1995-08-17 Yuan Mei Corp Bewässerungsspritzkopf
US5645222A (en) * 1995-09-07 1997-07-08 Chih; E-Shun Spray-pattern dial mounting structure for water sprayers
DE19824099A1 (de) 1998-05-29 1999-12-02 Scheffer Ohg Franz Mehrfunktions-Handbrause mit Ökostrahl
DE20317380U1 (de) * 2003-11-12 2004-01-15 Aesculap Ag & Co. Kg Strahlformeinrichtung für eine Sprühdose
US8640973B2 (en) * 2006-09-07 2014-02-04 Briggs And Stratton Corporation Pressure washer wand having a nozzle selector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3939705A1 (fr) 2020-07-14 2022-01-19 Andreas Stihl AG & Co. KG Appareil de nettoyage haute pression

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Publication number Publication date
DE102011002724A1 (de) 2012-07-19
WO2012095238A1 (fr) 2012-07-19
EP2663404A1 (fr) 2013-11-20

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