EP0494253B1 - Hochdruckreinigungsgerät - Google Patents

Hochdruckreinigungsgerät Download PDF

Info

Publication number
EP0494253B1
EP0494253B1 EP90915434A EP90915434A EP0494253B1 EP 0494253 B1 EP0494253 B1 EP 0494253B1 EP 90915434 A EP90915434 A EP 90915434A EP 90915434 A EP90915434 A EP 90915434A EP 0494253 B1 EP0494253 B1 EP 0494253B1
Authority
EP
European Patent Office
Prior art keywords
pressure
line
high pressure
adjusting knob
manometer
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.)
Expired - Lifetime
Application number
EP90915434A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0494253A1 (de
Inventor
Jürgen KLÖPFER
Robert Nathan
Michael Moser
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 EP0494253A1 publication Critical patent/EP0494253A1/de
Application granted granted Critical
Publication of EP0494253B1 publication Critical patent/EP0494253B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0205—Bypass pressure relief valves

Definitions

  • the invention relates to a high-pressure cleaning device with a high-pressure pump, a pressure line fed by the latter, a pressure-quantity regulation which can be actuated by means of an adjusting knob, and a pressure gauge, the pressure-sensitive element of which is arranged in the pressure line or in a space connected to the pressure line.
  • High-pressure cleaning devices of this type in which the pressure line is connected to a spray lance or special spray nozzles, can usually be set by actuating the setting button of the pressure-quantity regulation so that the pressure of the cleaning jet emitted corresponds to the respective requirements.
  • pressure gauges of this type are provided on high-pressure cleaning devices which indicate the pressure in the pressure line or in a space of the device connected to the pressure line.
  • the operator can thus be monitored of the pressure gauge set the desired pressure of the liquid dispensed, whereby in many constructions this pressure also simultaneously determines the quantity dispensed per unit of time.
  • the pressure gauge is located in the housing and thus requires a special space on the housing from which it often protrudes (DE-U-88 15 807).
  • the adjusting knob for the pressure-quantity regulation is necessary in any such device anyway, its size results from the manageability of such an adjusting knob, which cannot be made arbitrarily small and in any case must protrude from the housing so that it can be gripped.
  • This adjusting knob, which is necessary anyway, is used according to the invention to additionally accommodate the pressure gauge, so that no additional space is required for the pressure gauge.
  • the display of the pressure gauge is arranged under the transparent top of the adjustment button.
  • the adjustment knob is a cylindrical pressure gauge housing that has gripping surfaces on its side wall.
  • the adjustment knob is adjoined by a cylindrical shaft, in which there is a channel connecting the pressure gauge in the adjustment knob to the pressure line or to a space communicating with the pressure line.
  • the assembly of the adjusting knob and shaft can be formed in one piece, it is particularly advantageous if the adjusting knob is designed as a separate part and is placed on the shaft in a sealed manner.
  • the stem carries a valve body which, together with a valve seat on a bypass line connecting the pressure line to the suction line of the high-pressure pump, forms a closing valve
  • the stem lies as an actuating element on a valve body which, together with a valve seat on a bypass line connecting the pressure line to the suction line of the high-pressure pump, forms a closing valve.
  • the high-pressure cleaning device shown in the drawing comprises a housing 1, in which there is a high-pressure pump, not shown. This is carried out via a suction line 2 of cleaning liquid which is pumped into a pressure line 3 by the pump under high pressure.
  • the pressure line ends in a spray lance or spray gun, not shown in the drawing, via which a jet of the desired shape can be emitted under high pressure.
  • the pressure and the amount of the liquid discharged via the pressure line 3 can be set on a setting button 4 protruding from the housing 1, which, for example, actuates a metering valve in the pressure line or a meterable closing valve in a bypass line leading back to the suction line of the pump.
  • a setting button 4 protruding from the housing 1, which, for example, actuates a metering valve in the pressure line or a meterable closing valve in a bypass line leading back to the suction line of the pump.
  • a manometer 5 is arranged in the adjusting knob 4, which is designed as a rotary handle, and can be viewed from the top and indicates the pressure that prevails in the pressure line 3 itself or in a space connected to the pressure line. In this way, when setting the desired pressure and quantity values on the setting button 4, the operator can read these pressure values directly on the manometer and check and correct its adjustment. There is no additional space requirement for the manometer 5, since the setting button 4 is provided in any case.
  • FIG. 2 A special embodiment of a pressure quantity regulation results from the illustration in FIG. 2.
  • a housing 6 there is a cylindrical blind hole 7, through which the pressure line 8 passes.
  • a bypass line 9 connects to the blind hole 7, which leads to the suction side of the high-pressure pump in a manner not shown in the drawing.
  • an insert 10 is inserted in a sealed manner and has a central bore 11, the lower edge of which forms a valve seat 12.
  • a valve body 13 bears against this valve seat and is screwed into a piston 14 which is displaceable in the blind hole 7.
  • This piston 14 is sealed against the inner wall of the blind hole 7 by an annular seal 15, the valve body 13 pressed against the valve seat 12 by a helical spring 16 supported on the one hand on the insert 10 and on the other hand on the piston 14.
  • the blind hole 7 is closed on its side opposite the bypass line 9 by a screwed screw plug 17, into which a shaft 19 connected to a grip part 18 is screwed, which projects downward from the screw plug 17 and whose end face 20 is a stop surface for the piston 14 forms.
  • the shaft 19 is sealed off from the screw plug 17 by an annular seal 21; it can be screwed into the blind hole 7 to a greater or lesser extent by actuating the handle part 18.
  • an injector 22 with a constriction is inserted into the pressure line 8, in the area of which a connecting line 23 branches off, which ends in the chamber 24, which the piston 14 on the one hand and the screw plug 17 and the shaft 19 on the other hand in the blind hole 7 form.
  • the shaft 19 has a longitudinal channel 25 leading from its front end into the grip part 18, which leads to the manometer 5 in the adjusting knob 4 and thus connects it to the chamber 24.
  • the manometer 5 indicates the pressure prevailing in the chamber 24.
  • the manometer 5 is arranged in the handle part 18 so that it can be seen through a window 26 on the top of the adjusting knob.
  • the pressure gauge 5 can be inserted into a blind hole 27 in an enlarged head part 28 formed in one piece with the shaft 19.
  • a hood 29 provided with the transparent window 26 is pulled over this head part 28 is formed on its outer wall 30 as a grip surface, for example by a plurality of axially parallel ribs or the like.
  • the bypass line 9 can be closed by hand by screwing the valve body 31 onto the valve seat 32. In this case, all of the liquid delivered by the high-pressure pump flows through the pressure line 8. If the valve body 31 is lifted from the valve seat 32 by turning the adjusting knob 4, the flow is divided, that is to say a part of the liquid reaches the suction side via the bypass line 9 the pump, while only a remainder is released via the pressure line. This also lowers the pressure in the blind hole 7, which is indicated by the manometer 5 in the adjusting knob 4 via the connection of the transverse bore 33 and the longitudinal channel 25. In this way too, the user finds out the respective position of the valve body 31 relative to the valve seat 32 via the pressure display and can thus set the desired pressure value and thus a desired delivery quantity.
  • FIG. 4 differs from the embodiment of FIG. 3 essentially in that the head part 28 of the adjusting knob 4 is not formed in one piece with the shaft 19, but rather forms a separate component that is screwed onto the shaft 19 and glued to it, for example can be.
  • the manometer itself can have a customary structure, it can transfer the displacement of a piston acting as a sensor to a pointer by means of mechanical deflecting elements, and the indicator can be displayed by a rotatably mounted pointer. In other cases it would also be a linear display possible by a correspondingly moving display element.
  • pressure gauges of a known type could be used.

Landscapes

  • Measuring Fluid Pressure (AREA)
EP90915434A 1989-09-28 1990-09-19 Hochdruckreinigungsgerät Expired - Lifetime EP0494253B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3932386 1989-09-28
DE3932386A DE3932386C1 (enExample) 1989-09-28 1989-09-28

Publications (2)

Publication Number Publication Date
EP0494253A1 EP0494253A1 (de) 1992-07-15
EP0494253B1 true EP0494253B1 (de) 1993-08-11

Family

ID=6390383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90915434A Expired - Lifetime EP0494253B1 (de) 1989-09-28 1990-09-19 Hochdruckreinigungsgerät

Country Status (4)

Country Link
EP (1) EP0494253B1 (enExample)
DE (2) DE3932386C1 (enExample)
DK (1) DK0494253T3 (enExample)
WO (1) WO1991004804A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913230C2 (de) * 1999-03-23 2001-06-21 Vti Ventil Technik Gmbh Ventilarmatur für einen Druckbehälter
DE202005001256U1 (de) * 2005-01-26 2005-06-09 Bürkert Werke GmbH & Co. KG Ventil für ein fluides Medium
EP3812053B1 (de) 2019-10-24 2025-06-11 Andreas Stihl AG & Co. KG Hochdruckreiniger und verfahren zur montage eines hochdruckreinigers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1142070A (fr) * 1956-01-31 1957-09-13 P Berthoud Ets Perfectionnements aux dispositifs de manomètres pour pulvérisateurs agricoles et analogues
FR1381729A (fr) * 1964-01-17 1964-12-14 Robinetterie Chantoiseau Valve pour la mesure des fluides
DE2725575A1 (de) * 1977-06-07 1978-12-21 Karl Hehl Vorrichtung zum abwechselnden anschliessen eines manometers an verschiedene druckmesstellen
DE3248622C2 (de) * 1982-12-30 1985-10-17 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgerät
DE8815807U1 (de) * 1988-12-21 1989-11-02 WAP Reinigungssysteme GmbH & Co, 7919 Bellenberg Hochdruckreinigungsgerät mit Halterungsvorrichtung

Also Published As

Publication number Publication date
WO1991004804A1 (de) 1991-04-18
DE3932386C1 (enExample) 1990-12-20
DK0494253T3 (da) 1993-10-18
DE9004298U1 (de) 1990-08-09
EP0494253A1 (de) 1992-07-15

Similar Documents

Publication Publication Date Title
EP0315656B1 (de) Infusionsgerät
DE69712625T2 (de) Austragsvorrichtung
DE2206402C3 (de) Spritzvorrichtung zum Ausspritzen einer mit Zusatzflüssigkeit vermischten Trägerflüssigkeit
DE2343687B2 (de) Dosiergeraet zur abgabe von fluessigkeit aus einem behaelter
EP4079419A1 (de) Hochdruckreinigungsgerät
EP3991861A1 (de) Hochdruckreinigungsgerät
EP0183130A2 (de) Zerstäuberdüse eines Flüssigkeitszerstäubers
EP0494253B1 (de) Hochdruckreinigungsgerät
DE3736095C2 (enExample)
EP0927580B1 (de) Handbrause
DE3332189C1 (de) Landwirtschaftliches Gerät zum dosierten Ausbringen von Flüssigkeiten
WO2001053001A1 (de) Strahlrohr für ein hochdruckreinigungsgerät
DE2139870C3 (de) Siphonflaschenverschluß
DE2045997B2 (de) Fluessigkeitskolbenpumpe zur uebertragung hydraulischer druckimpulse oder eines pulsierenden fluessigkeitsstrahles auf ein handgeraet zur koerperpflege
DE2242030C3 (de) Hochdruckdosierpistole insbesondere zum Aufbringen einer Polierpaste
DE567158C (de) Spuelventil
DE7428678U (de) Druckschaltventil
DE3003390A1 (de) Druckluftschrauber mit einer einrichtung zum zufuehren und halten der schraube durch saugluft
DE3018479A1 (de) Ventil mit handbetaetigung
DE3439235C2 (enExample)
DE2603776C2 (de) Druckspüler mit zugeordneter Vorabsperrung
DE1550184A1 (de) Auslaufhahn
DE4033009A1 (de) Druckspueler
DE7802594U1 (de) Landwirtschaftliches Gerät zum dosierten Ausbringen von Flüssigkeiten
EP0008747A1 (de) Steuerorgan für ein Reifenfüllgerät

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920205

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DK GB IT

17Q First examination report despatched

Effective date: 19921109

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DK GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930820

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980914

Year of fee payment: 9

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

Ref country code: GB

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

Effective date: 19990919

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990919

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

Ref country code: DK

Payment date: 20020919

Year of fee payment: 13

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

Ref country code: DK

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

Effective date: 20030930

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

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

Ref country code: IT

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

Effective date: 20050919