EP0455659A1 - Appareil de nettoyage haute-pression. - Google Patents

Appareil de nettoyage haute-pression.

Info

Publication number
EP0455659A1
EP0455659A1 EP90901809A EP90901809A EP0455659A1 EP 0455659 A1 EP0455659 A1 EP 0455659A1 EP 90901809 A EP90901809 A EP 90901809A EP 90901809 A EP90901809 A EP 90901809A EP 0455659 A1 EP0455659 A1 EP 0455659A1
Authority
EP
European Patent Office
Prior art keywords
pressure
line
internal combustion
combustion engine
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90901809A
Other languages
German (de)
English (en)
Other versions
EP0455659B1 (fr
Inventor
Bertram Groeger
Helmut Komp
Rudi Schwaderer
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 EP0455659A1 publication Critical patent/EP0455659A1/fr
Application granted granted Critical
Publication of EP0455659B1 publication Critical patent/EP0455659B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • B08B2203/0241—Combustion motor pumps
    • 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
    • B08B2203/027—Pump details

Definitions

  • the invention relates to a high-pressure cleaning device with a high-pressure pump driven by an internal combustion engine, from the pressure line of which a bypass line that opens when the pressure line is closed leads to the suction side of the pump, and to a pressure sensor in the pressure line.
  • a high-pressure cleaning device with a high-pressure pump driven by an internal combustion engine, from the pressure line of which a bypass line that opens when the pressure line is closed leads to the suction side of the pump, and to a pressure sensor in the pressure line.
  • High-pressure pump often driven by an internal combustion engine
  • the internal combustion engine drives the pump with the power required for operation. If the spray gun of the high-pressure pump is closed, this would lead to excessive heating of the pump, which will then no longer have liquid flowing through it.
  • This object is achieved in a high-pressure cleaning device of the type described in the introduction in that the pressure sensor reduces the speed of the internal combustion engine as soon as the pressure in the pressure line drops below a certain value.
  • the speed is reduced not only when the spray gun is closed and the bypass line is opened, but also in the event of unforeseen malfunctions, for example when the high-pressure hose bursts or tears, since the pressure line is also present in this case Pressure drops below the pressure necessary for lowering the speed.
  • the pressure sensor ees the gas linkage when the determined pressure value is exceeded Internal combustion engine adjusted in the direction of an increase in speed. This intervention on the gas linkage of the internal combustion engine makes it possible to operate the internal combustion engine with its own control, which is not interfered with. This also enables a corresponding speed control for an internal combustion engine to be retrofitted in a simple manner, since it is sufficient to insert a corresponding actuating element which adjusts the gas linkage as a function of the position of the pressure sensor.
  • the pressure sensor preferably actuates a Bowden cable that engages the gas linkage.
  • the pressure sensor has an adjusting piston which is displaceable against a spring force and acted upon by the pressure in the pressure line
  • Movement is transferred to the movement of the throttle linkage. It can be provided that the adjusting piston is displaceable in a sealed manner in a cylindrical housing
  • Step piston is and that one with the pressure line in
  • Connected measuring line opens into the annular space formed between the piston and the cylindrical housing.
  • Figure 1 is a schematic representation of a high-pressure cleaning device with a pressure-dependent speed-controlled internal combustion engine
  • Figure 2 is a longitudinal sectional view of a pressure sensor
  • Figure 3 a schematic representation of the pressure curve at the pressure sensor and the thus set speeds of the internal combustion engine.
  • a high-pressure cleaning device as is shown schematically in FIG. 1, comprises a high-pressure pump 1, which is driven by an internal combustion engine 2.
  • the suction line 3 of the high pressure pump is connected to a storage vessel 4 or another supply line, the pressure line 5 of the high pressure pump 1 leads to a closable spray gun 6.
  • a bypass line 7 branches off from the pressure line 5 and leads back to the suction line 3 of the high-pressure pump 1.
  • the bypass line 7 is normally closed by means of a closing valve 8, but is opened when the pressure line 5 is closed, for example by releasing the
  • Spray gun 6 This can be controlled by a fault monitor in the pressure line or by pressure difference measurements in constrictions in the pressure line. This ensures, in a manner known per se, that when the spray gun is closed, the liquid conveyed by the pump is returned through the bypass line to the suction side of the pump and is therefore only conveyed by the pump in the circuit, while the liquid is open with the spray gun and with a correspondingly closed one Bypass line directly to the spray gun is fed.
  • a pressure sensor 9 which is connected via a Bowden cable 10 to the throttle lever 11 of the internal combustion engine 2 and, by actuating the Bowden cable 10, shifts the throttle lever 11 from a low speed position to a higher speed position and vice versa.
  • a preferred embodiment of such a pressure sensor 9 is shown in Figure 2.
  • This pressure sensor 9 comprises a housing 12 with a stepped blind hole 13, which is closed by a threaded plug 14.
  • a stepped piston 17 is mounted so as to be longitudinally displaceable, sealed against the inner wall thereof by means of sealing rings 15 and 16, and receives a compression spring 19 in a front hole 18, which is supported at the other end on the threaded plug 14 and thus the stepped piston 17 against the floor 20 of the blind hole 13 presses.
  • Stepped piston 17 on the one hand and the inner wall of the blind hole 13 on the other hand a sealed annular space 21 which is connected to a measuring opening 22 which extends through the housing and is attached to the wall.
  • This can be connected to the pressure line 5 via a measuring line (not shown in the drawing), it is also possible to switch this measuring opening 22 directly into the pressure line 5.
  • the measuring opening 22 By connecting the measuring opening 22 to the annular space 21, the latter is conveyed through the pressure line 5 Liquid filled, which removes the stepped piston 17 against the action of the compression spring 19 from the bottom 20 of the blind bore 13 when the pressure rises.
  • the core 23 of the Bowden cable 10 On the stepped piston 17, the core 23 of the Bowden cable 10 is held, which leaves the bottom 20 of the blind bore 13 through a screwed-in threaded sleeve 24 and is guided in a spiral jacket 25 supported on the threaded sleeve 24 up to the throttle lever 11.
  • the other end of the spiral jacket 25 is supported on a stop on the internal combustion engine 2.
  • the pressure in the pressure line is removed via a mechanically operating pressure sensor which detects the movement of the control piston directly via a
  • Bowden cable transfers to the engine.
  • other transmission paths instead of the Bowden cable, for example a hydraulic one

Landscapes

  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Measuring Fluid Pressure (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

Un appareil de nettoyage haute pression comprend une pompe haute pression (1) entraînée par un moteur à combustion interne. Une dérivation (7) allant de la conduite de refoulement (5) de la pompe au côté aspiration (3) de la pompe (1) s'ouvre lorsque la conduite de refoulement (5) est fermée. Une sonde de pression (9) est située dans la conduite de refoulement (5). Afin d'adapter la puissance du moteur à combustion interne (2) aux conditions de fonctionnement régnantes, la sonde de pression (9) réduit la vitesse du moteur à combustion interne (2) dès que la pression dans la conduite de refoulement (5) tombe au-dessous d'une valeur donnée.
EP90901809A 1989-01-26 1990-01-04 Appareil de nettoyage haute-pression Expired - Lifetime EP0455659B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3902252 1989-01-26
DE3902252A DE3902252C1 (fr) 1989-01-26 1989-01-26
PCT/EP1990/000009 WO1990008602A1 (fr) 1989-01-26 1990-01-04 Appareil de nettoyage haute-pression

Publications (2)

Publication Number Publication Date
EP0455659A1 true EP0455659A1 (fr) 1991-11-13
EP0455659B1 EP0455659B1 (fr) 1994-04-27

Family

ID=6372826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90901809A Expired - Lifetime EP0455659B1 (fr) 1989-01-26 1990-01-04 Appareil de nettoyage haute-pression

Country Status (8)

Country Link
US (1) US5174723A (fr)
EP (1) EP0455659B1 (fr)
JP (1) JPH04502425A (fr)
AU (1) AU4956990A (fr)
CA (1) CA2045457C (fr)
DE (2) DE3902252C1 (fr)
DK (1) DK0455659T5 (fr)
WO (1) WO1990008602A1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320280A (en) * 1992-06-19 1994-06-14 Graco Inc. Pneumatically controlled spraying system having a diaphragm-operated switch
DE9211472U1 (de) * 1992-08-26 1994-01-05 Dolmar GmbH, 22045 Hamburg Hochdruckreinigungsgerät
US5397054A (en) * 1992-08-26 1995-03-14 Dolmar Gmbh Pressure jet cleaning appliance
US5529460A (en) * 1993-07-28 1996-06-25 Coleman Powermate, Inc. Pressure washer with flow control switch
DE29501209U1 (de) * 1995-01-26 1996-05-23 Dolmar GmbH, 22045 Hamburg Druckreinigungsgerät
US6206980B1 (en) 1997-11-13 2001-03-27 Kaivac, Inc. Multi-functional cleaning machine
US6056207A (en) * 1998-04-30 2000-05-02 Sioux Steam Cleaner Corporation Cleaner with temperature control
US6648603B2 (en) * 2000-02-17 2003-11-18 Devilbiss Air Power Company Pressure washer engine idle controller
NL1015139C2 (nl) * 2000-05-09 2003-08-13 Waterkracht Bv Werkwijze en inrichting voor reiniging met water.
DE10146289A1 (de) * 2001-05-17 2002-11-21 Juergen Weigel & Herbert Eberh Verfahren zur Steuerung eines Hochdruckreinigungsgeräts
DE10218143A1 (de) * 2002-04-23 2003-11-13 Alto Deutschland Gmbh Sicherheitsfernsteuerung für den Betrieb von Hochdruckreinigern
US7255539B1 (en) * 2002-05-09 2007-08-14 Clarke Fire Protection Products Pump pressure limiting engine speed control
US7128539B2 (en) * 2002-05-31 2006-10-31 Titan Tool, Inc Method for improved cleaning of a pumping system
US6939110B2 (en) * 2002-11-06 2005-09-06 Clarke Engineering Technologies, Inc. Control system for I.C. engine driven blower
US20050081898A1 (en) * 2003-10-15 2005-04-21 Steve Williams All purpose cleaning machine
US20100282862A1 (en) * 2009-05-06 2010-11-11 Briggs & Stratton Corporation Pressure washer with throttle control
US8038413B2 (en) * 2006-07-17 2011-10-18 Briggs And Stratton Corporation Idle down control for a pressure washer
US20090317262A1 (en) * 2006-07-17 2009-12-24 Briggs & Stratton Corporation Engine speed control for pressure washer
US7926740B2 (en) * 2007-04-04 2011-04-19 Black & Decker Inc. Pressure washer system and operating method
US20090129935A1 (en) * 2007-11-21 2009-05-21 Kunkler Kevin J Pump suction pressure limiting speed control and related pump driver and sprinkler system
US20110142685A1 (en) * 2009-12-16 2011-06-16 Briggs & Strantton Corporation Pump unloader valve and engine throttle system
WO2012170394A1 (fr) 2011-06-09 2012-12-13 Clarke Fire Protection Products, Inc. Agencements de refroidissement pour des pompes à incendie d'un système d'extincteurs à des fins d'extinction d'incendie
DE102014107171A1 (de) 2014-05-21 2015-11-26 Alfred Kärcher Gmbh & Co. Kg Hochdruckreinigungsgerät
CN106076919A (zh) * 2016-06-06 2016-11-09 淮南市鸿裕工业产品设计有限公司 一种高压清洗机压力调控器
CN109092810A (zh) * 2017-06-21 2018-12-28 上海恒亚实业有限公司 一种管道疏通机
JP2020097900A (ja) * 2018-12-17 2020-06-25 工機ホールディングス株式会社 液体吐出装置
CN111359951A (zh) * 2018-12-26 2020-07-03 永康三久工具有限公司 一种高压清洗机

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BE504843A (fr) *
DE542445C (de) * 1930-12-19 1932-01-23 Oerlikon Maschf Selbsttaetige Reguliereinrichtung von durch Brennkraftmaschinen angetriebenen Verdichtern
US3977603A (en) * 1975-10-22 1976-08-31 Partek Corporation Of Houston Fluid delivery system
US4238073A (en) * 1979-03-26 1980-12-09 Miroslav Liska Paint spray apparatus having pressure actuated control
US4353336A (en) * 1980-01-10 1982-10-12 Lucas Industries Limited Fuel pumping apparatus
DE8128510U1 (de) * 1981-09-29 1982-04-22 Frank'sche Eisenwerke Ag, 6340 Dillenburg "spritzeinrichtung fuer reinigungsgeraete, pflanzenschutzgeraete oder aehnliche geraete"
JPS58102406A (ja) * 1981-12-12 1983-06-18 アルプス電気株式会社 透明導電性被膜形成用ペ−スト
JPS59196941A (ja) * 1983-04-25 1984-11-08 Ebara Corp 内燃機関駆動ポンプの自動運転装置
US4545740A (en) * 1984-09-20 1985-10-08 Ebara Corporation Automatic operating system for pump driven by internal combustion engine
US4527953A (en) * 1984-10-12 1985-07-09 E. I. Du Pont De Nemours And Company Pump unit for sampling air
DE3443354A1 (de) * 1984-11-28 1986-05-28 Robert Bosch Gmbh, 7000 Stuttgart Hydraulikanlage
US5035580A (en) * 1989-09-14 1991-07-30 Diversified Dynamics Corporation Bypass mode control for high pressure washing system

Non-Patent Citations (1)

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Title
See references of WO9008602A1 *

Also Published As

Publication number Publication date
WO1990008602A1 (fr) 1990-08-09
DK0455659T5 (da) 1994-08-22
DE59005539D1 (de) 1994-06-01
US5174723A (en) 1992-12-29
JPH04502425A (ja) 1992-05-07
AU4956990A (en) 1990-08-24
EP0455659B1 (fr) 1994-04-27
DE3902252C1 (fr) 1990-01-18
CA2045457C (fr) 1995-06-06
CA2045457A1 (fr) 1990-07-27

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