EP2131970B1 - Appareil de nettoyage à haute pression - Google Patents

Appareil de nettoyage à haute pression Download PDF

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Publication number
EP2131970B1
EP2131970B1 EP08735129A EP08735129A EP2131970B1 EP 2131970 B1 EP2131970 B1 EP 2131970B1 EP 08735129 A EP08735129 A EP 08735129A EP 08735129 A EP08735129 A EP 08735129A EP 2131970 B1 EP2131970 B1 EP 2131970B1
Authority
EP
European Patent Office
Prior art keywords
valve
channel
pressure
outlet
cleaning appliance
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
EP08735129A
Other languages
German (de)
English (en)
Other versions
EP2131970A1 (fr
Inventor
Wolfgang Müller
Sven Dirnberger
Bernd KÖRNER
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
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP2131970A1 publication Critical patent/EP2131970A1/fr
Application granted granted Critical
Publication of EP2131970B1 publication Critical patent/EP2131970B1/fr
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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • F04B49/035—Bypassing

Definitions

  • a discharge channel which is positioned in the rear end position of the valve piston between the two sealing rings and a flow connection between the longitudinal channel and the outlet channel releases.
  • the high-pressure cleaning device can thereby be operated in the circuit. If the valve piston assumes its front end position, the discharge channel is arranged downstream of the second sealing ring and the flow connection between the longitudinal channel and the outlet channel is interrupted.
  • the passage channel comprises a guide portion, on the inner wall of the pressure body is slidably mounted with the interposition of the sealing ring.
  • the guide section forms a sliding guide for the valve element and provides on its inner wall the sealing surface associated with the sealing surface.
  • the relief valve so gradually assumes its closed position, starting from its open position, in which the valve element reseals sealingly against the valve seat, it is advantageous if the flow cross-section of the through-channel in the region upstream of the at least one outlet channel is greater than the flow cross-section of the outlet channel.
  • the exhaust passage thus forms a throttle element so that a substantial pressure is established upstream of the exhaust passage when the relief valve assumes its open position.
  • the flow of the cleaning fluid entering the relief valve is subject to a resistance in the area of the decreasing flow cross-section, so that the pressure prevailing in the inlet region of the through-channel is very gradually reduced.
  • the relief valve has a single outlet channel, because this allows the manufacturing cost of the relief valve can be kept low and by means of the single outlet channel, a considerable throttle effect can be generated.
  • valve element at least partially releases the at least one outlet channel both in the open position and in the closed position of the relief valve.
  • Such a configuration has the effect that, when the valve element is lifted off the valve seat, a continuous flow connection from the valve inlet via the inlet region of the passage channel and the outlet channel to the second valve outlet is ensured immediately, ie inflowing liquid can flow through the relief valve even with a slight lift-off movement of the valve element from the valve seat, it is not necessary that the valve member occupy a minimum distance to the valve seat, to release the flow connection between the valve inlet and the second valve outlet.
  • valve element is associated with a stop on which the valve element rests in the open position of the relief valve.
  • the stop forms a defined stroke limitation for the valve element, s -that the desired stroke of the valve element can be structurally determined by the position of the stop.
  • the stop is formed by a support element arranged in the through-channel.
  • a support element arranged in the through-channel.
  • the support member is in a preferred embodiment radially inwardly from an inner wall of the passageway.
  • the return spring is preferably clamped between a collar of the valve element and an end face of the second housing part.
  • a spring-loaded check valve 30 is used, in the flow direction of the flow cross-section of the pressure line 28 reducing injector 31 connects, which is connected at its narrowest point via a suction channel 32 with a Chemikalienansaug effet 33, which is closed by a check valve 34 ,
  • the valve member 61 in the open position of the relief valve 38 acts on the valve element 61 a pressure difference, which has the consequence that the valve element 61 is acted upon by an axially against the action of the return spring 77 acting force, the valve member 61 reliably as long as the distance from the valve seat 58 holds until the pressure of the cleaning liquid in the inlet portion 91 has lowered so far that the force of the return spring 77 is sufficient to return the valve element to the valve seat 58.
  • the pressure difference acting on the valve element 61 in the open position of the relief valve 38 reduces the occurrence of oscillatory movements of the valve element 61.
  • FIG. 4 a second embodiment of a relief valve is shown, which can be used as an alternative to the relief valve 38 in the high-pressure cleaning device 10. It is altogether occupied by the reference numeral 98.
  • the relief valve 98 has a first housing part 101 and a second housing part 102. On the outside, the first housing part 101 carries a circumferential groove 104, which receives a sealing ring 105 which abuts sealingly against the wall of the return flow line 36 in the return flow line 36 when the relief valve 98 designed as a self-contained cartridge is inserted.
  • the housing parts 101 and 102 are locked together.
  • a screw connection for detachably connecting the two housing parts 101, 102 could be used.
  • a valve element 132 is movably mounted with a designed in the form of a spherical cap closing body 133 and an axially adjoining this pressure body 134.
  • the closing body 133 is located in the in Figure 4 illustrated closed position of the relief valve 98 at one of the first conical extension 112 formed valve seat 136 close to.
  • the pressure body 134 extends from the closing body 133 into the region of the fourth channel section 120, where it bears on the outside an annular groove 138, in which a valve element 132 surrounding circumferentially sealing ring 139 is arranged.
  • the inner diameter of the sealing ring is selected larger than the diameter of the bottom of the annular groove 138. This has the consequence that the sealing ring 139 is at a distance from the bottom of the annular groove 138, as shown in FIG FIG. 4 is shown. On the outside, the sealing ring 139 is tight against the wall of the fourth channel section 120.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Cleaning In General (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Control Of Fluid Pressure (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Centrifugal Separators (AREA)

Claims (12)

  1. Appareil de nettoyage à haute pression doté d'une pompe à haute pression qui possède au moins une chambre de pompage qui est reliée à une conduite de pression et une conduite d'aspiration, la conduite de pression étant en liaison d'écoulement avec la conduite d'aspiration par l'intermédiaire d'une conduite de refoulement et un clapet de décharge étant disposé dans la conduite de refoulement, le clapet de décharge possédant un canal de passage qui s'étend d'une entrée de clapet à une première sortie de clapet et qui forme un siège de clapet, au moins un canal de sortie, qui débouche dans une deuxième sortie de clapet, étant montée en dérivation du canal de passage en aval du siège de clapet et un élément de clapet, qui est apte à appuyer de façon étanche contre le siège de clapet au moyen d'un ressort de rappel, étant monté de façon mobile dans le canal de passage, caractérisé en ce que le ressort de clapet (61 ; 132) est entouré dans la direction opposée au siège de clapet (58 ; 136) à distance de l'au moins un canal de sortie (88 ; 142) par une bague d'étanchéité (66 ; 139) qui réalise l'étanchéité d'une région d'entrée (91, 154), près de l'entrée de clapet (52 ; 109), du canal de passage (50 ; 107) vis-à-vis d'une région de sortie (92, 155), près de la première sortie de clapet (75 ; 151), du canal de passage (50 ; 107).
  2. Appareil de nettoyage à haute pression selon la revendication 1, caractérisé en ce que la bague d'étanchéité (66 ; 139) est disposée dans une gorge périphérique (64 ; 138) de l'élément de clapet (61 ; 132).
  3. Appareil de nettoyage à haute pression selon la revendication 2, caractérisé en ce que le diamètre intérieur de la bague d'étanchéité (66 ; 139) est supérieur au diamètre au fond de la gorge périphérique (64 ; 138).
  4. Appareil de nettoyage à haute pression selon la revendication 1, 2 ou 3, caractérisé en ce que l'élément de clapet (61 ; 132) possède un corps de fermeture (60 ; 133) qui est apte à appuyer de façon étanche contre le siège de clapet (58 ; 136) ainsi qu'un corps de pression (63 ; 134) qui est entouré par la bague d'étanchéité (66 ; 139) à distance du corps de fermeture (60 ; 133).
  5. Appareil de nettoyage à haute pression selon la revendication 4, caractérisé en ce que le canal de passage (50 ; 107) possède une portion de guidage (56 ; 120) sur la paroi intérieure de laquelle le corps de pression (63 ; 134) est monté de façon à pouvoir se déplacer en translation lorsque la bague d'étanchéité (66 ; 139) est dans une position intermédiaire.
  6. Appareil de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce que la section d'écoulement du canal de passage (50 ; 107) dans la région située en amont de l'au moins un canal de sortie (88 ; 142) est supérieure à la section d'écoulement du canal de sortie (88 ; 142).
  7. Appareil de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce que le clapet de décharge (38 ; 98) possède un seul canal de sortie (88 ; 142).
  8. Appareil de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce que l'élément de clapet (61 ; 132) libère au moins partiellement, aussi bien dans la position d'ouverture que dans la position de fermeture du clapet de décharge (38 ; 98), l'au moins un canal de sortie (88 ; 142).
  9. Appareil de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce qu'une butée (80 ; 126), contre laquelle porte l'élément de clapet (61 ; 132) lorsque le clapet de décharge (38 ; 98) est dans la position d'ouverture, est associée à l'élément de clapet (61 ; 132).
  10. Appareil de nettoyage à haute pression selon la revendication 9, caractérisé en ce que la butée est formée par un étranglement (126) du canal de passage (107).
  11. Appareil de nettoyage à haute pression selon la revendication 9, caractérisé en ce que la butée (80) est formée par un élément de support (74) saillant dans le canal de passage (50).
  12. Appareil de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce que le clapet de décharge (98) possède une première pièce de boîtier (101) et une deuxième pièce de boîtier (102) qui peuvent être reliées l'une à l'autre lorsqu'une bague d'étanchéité (130) est en position intermédiaire.
EP08735129A 2007-04-11 2008-04-10 Appareil de nettoyage à haute pression Active EP2131970B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007017970A DE102007017970A1 (de) 2007-04-11 2007-04-11 Hochdruckreinigungsgerät
PCT/EP2008/002818 WO2008125267A1 (fr) 2007-04-11 2008-04-10 Appareil de nettoyage à haute pression

Publications (2)

Publication Number Publication Date
EP2131970A1 EP2131970A1 (fr) 2009-12-16
EP2131970B1 true EP2131970B1 (fr) 2011-01-19

Family

ID=39598405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08735129A Active EP2131970B1 (fr) 2007-04-11 2008-04-10 Appareil de nettoyage à haute pression

Country Status (7)

Country Link
US (1) US8790092B2 (fr)
EP (1) EP2131970B1 (fr)
CN (1) CN101641165B (fr)
AT (1) ATE495828T1 (fr)
DE (2) DE102007017970A1 (fr)
DK (1) DK2131970T3 (fr)
WO (1) WO2008125267A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101988492A (zh) * 2009-08-04 2011-03-23 江继辉 自力式高压水系统压力调控装置及其方法
DE102009049094A1 (de) * 2009-10-01 2011-04-07 Alfred Kärcher Gmbh & Co. Kg Pumpe für ein Hochdruckreinigungsgerät
DE102009049095A1 (de) 2009-10-01 2011-04-07 Alfred Kärcher Gmbh & Co. Kg Pumpe für ein Hochdruckreinigungsgerät
DE102009049096A1 (de) 2009-10-01 2011-04-07 Alfred Kärcher Gmbh & Co. Kg Pumpe für ein Hochdruckreinigungsgerät
CN102953974B (zh) * 2011-08-31 2016-05-25 宁波蓝达实业有限公司 用于高压清洗机的自吸泵
ES2586589T3 (es) * 2012-01-20 2016-10-17 Alfred Kärcher Gmbh & Co. Kg Bomba de émbolos para un aparato de limpieza a alta presión
DE102014208891B3 (de) * 2014-05-12 2015-09-24 Continental Automotive Gmbh Druckbegrenzungsventil und Bauteil für ein Kraftstoffeinspritzsystem sowie Verfahren zur Herstellung eines Druckbegrenzungsventils
DE102022100388A1 (de) 2022-01-10 2023-07-13 Alfred Kärcher SE & Co. KG Motorpumpeneinheit, insbesondere für ein Hochdruckreinigungsgerät

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Also Published As

Publication number Publication date
WO2008125267A8 (fr) 2008-12-18
DE102007017970A1 (de) 2008-10-16
US20100059603A1 (en) 2010-03-11
DK2131970T3 (da) 2011-05-16
CN101641165B (zh) 2012-11-07
US8790092B2 (en) 2014-07-29
ATE495828T1 (de) 2011-02-15
EP2131970A1 (fr) 2009-12-16
CN101641165A (zh) 2010-02-03
DE502008002391D1 (de) 2011-03-03
WO2008125267A1 (fr) 2008-10-23

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