EP0444031A1 - Appareil de nettoyage haute pression. - Google Patents

Appareil de nettoyage haute pression.

Info

Publication number
EP0444031A1
EP0444031A1 EP89906084A EP89906084A EP0444031A1 EP 0444031 A1 EP0444031 A1 EP 0444031A1 EP 89906084 A EP89906084 A EP 89906084A EP 89906084 A EP89906084 A EP 89906084A EP 0444031 A1 EP0444031 A1 EP 0444031A1
Authority
EP
European Patent Office
Prior art keywords
line
cleaning liquid
supply
electric motor
pressure
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
EP89906084A
Other languages
German (de)
English (en)
Other versions
EP0444031B1 (fr
Inventor
Wolfgang Nieuwkamp
Horst Bauer
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
Priority to AT89906084T priority Critical patent/ATE99571T1/de
Publication of EP0444031A1 publication Critical patent/EP0444031A1/fr
Application granted granted Critical
Publication of EP0444031B1 publication Critical patent/EP0444031B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/002—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour incorporating means for heating or cooling, e.g. the material to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0423—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus
    • 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
    • B08B2203/007—Heating the liquid
    • 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
    • B08B2203/0223—Electric 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
    • B08B2203/0235—Cooling the motor pump
    • 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 for a cleaning liquid, which is connected on the suction side to a flow bale provided with a supply line for cleaning fluid and which has a bypass line in the pressure line which branches from it to the flow tank, and with one which drives the high-pressure pump Electric motor that has a cleaning fluid flowing through a cooling fluid line.
  • This fill level limitation can be an overflow line, but it can also be provided that the fill level limitation comprises a fill level indicator in the supply tank, a closing valve actuated by it in the coolant line and a switch for switching off the electric motor. In this way, during normal operation with the release of cleaning liquid, the small part of the cleaning liquid which reaches the flow container through the cooling liquid line becomes ⁇ er together with the main part
  • Cleaning liquid which is fed directly into the flow tank, is removed.
  • the cleaning liquid line is always supplied with fresh cleaning liquid, i.e. not preheated cooling liquid, which is then fed into the flow tank and gradually fills it up until it is full.
  • the filling height limitation prevents excessive filling of the flow tank. Since the proportion of the total cleaning liquid that flows through the plastic liquid line is small in relation to the main part, effective engine cooling in bypass operation can be obtained in this way over a longer period of time, where the cooling liquid is not lost. can be collected in the preliminary container.
  • a closing element is provided in the flow container. as well as an upper and a lower level indicator for actuating the closing element.
  • the feed tank is filled essentially automatically via the feed line, namely fully automatically by the two fill level indicators, which ensure that the fill level is always between the upper and the lower fill level.
  • the upper level indicator is arranged below the level of the filling height limitation. This way, even with full filling remains of the flow tank always receive a certain volume of the flow tank through the supply line, which can be filled up by the cleaning liquid flowing through the cooling liquid line. Since the proportion of the cleaning liquid that flows through the cooling liquid line is relatively small, cooling of the electric motor is made possible in this way in bypass operation over a longer period of time without the cleaning liquid used thereby being lost.
  • the supply line with the closing elements actuated by the two level indicators ensures that the supply tank is not completely emptied and can always supply cleaning fluid in normal dispensing operation.
  • the direct supply line to the flow tank is connected to a supply of heated cleaning liquid
  • the cooling liquid line to the electric motor is connected to a supply of cold cleaning liquid.
  • the delivery of preheated cleaning liquid is possible in the delivery operation. without having to supply preheated cleaning fluid to the electric motor for cooling purposes.
  • the electric motor can still be cooled with cold cleaning liquid, nevertheless, when this cold cleaning liquid, heated in the electric motor, is introduced into the supply tank, the temperature of the cleaning liquid collected in the supply tank is only slightly reduced, since the proportion of the cooling liquid in the vehicle to the part supplied by the supply line Cleaning liquid is low and because the cleaning liquid is warmed up by the cooling of the electric motor itself.
  • the drawing shows schematically the structure of a high-pressure cleaning device with a flow tank and a separate coolant line for the electric motor.
  • An electric motor 1 drives a high-pressure pump 2.
  • a high-pressure pump 2 For example, a conventional swash plate piston pump. This sucks cleaning liquid from a flow tank 4 via a suction line 3 and releases this cleaning liquid via a pressure line 5.
  • the cleaning liquid required by the high-pressure pump 2 is fed to a spray head, not shown in the drawing, for example a spray lance or the like.
  • a check valve 9 and a pressure measuring device 10 or a flow meter can be switched on.
  • a coolant line 11 is assigned to the electric motor 1 and can be routed helically in the stator, for example.
  • a closing valve 12 is switched on in this coolant line. Like the Bvpass line 7, it leads into the flow holder 4.
  • These level indicators can be designed, for example, as float switches or can be electronic level indicators. Together they ensure that the fill level in the supply tank through the supply line 13 always remains between an upper fill level and a lower fill level.
  • an overflow line 17 branches off from the feed tank 4.
  • the supply line 13 to the supply tank 4 and the coolant line 11 are dimensioned so that the output of the supply line 13 is significantly greater than that of the coolant line 11, that is, with the supply line open, a much larger amount of liquid flows through the supply line per unit time than the coolant line.
  • the liquid fraction through the cooling liquid line can be 10% of the liquid fraction through the supply line 13.
  • the feed tank 4 is filled up to the level defined by the upper level indicator 16 through the supply line 13.
  • the supply line is connected to a supply for heated cleaning liquid, not shown in the drawing, so that the supply tank with heated cleaning liquid speed is filled, for example at a temperature of 80 ° C. This temperature can be determined with a sensor 18 who the.
  • the cooling liquid line 11 is connected to a supply of cold cleaning liquid, so that the cold cleaning liquid provides very effective cooling of the electric motor.
  • the coolant is warmed up in the passage through the electric motor and then reaches the flow container. Even if the temperature of the coolant does not reach the temperature of the liquid supplied through the supply line 13, the temperature in the flow tank is not reduced very much because the proportion of the flow of liquid entering the coolant line is small compared to that of the supply line.
  • the cleaning liquid is always fed in simultaneously from the feeder 13 and from the coolant line 11, the supply line 13 being interrupted intermittently, depending on the respective fill level.
  • the closing valve 8 in the bypass line 7 opens, so that the cleaning fluid required by the high-pressure pump 2 is then returned to the flow container 4.
  • cleaning fluid continues to flow through the electric motor and effectively cools it.
  • the cleaning fluid finally gets into the flow tank and fills it up until the full height of the overflow line 17 is limited. If this is desired, the electric motor can still continue to work, in which case coolant can no longer fill up the flow tank, but instead flows through the overflow line after flowing through it.
  • the closing valve 12 in the cooling liquid line 11 can also close it, so that the inflow of cleaning liquid through the cooling liquid line 11 is interrupted.
  • the fill level in the feed tank is limited by the overflow line 17, it would also be possible to provide a fill level indicator in the feed tank instead of this overflow line 17, which is above the upper fill level indicator 16 is arranged and switches off the electric motor 1 when a corresponding fill level in the inlet tank is reached and at the same time interrupts the supply of further cleaning liquid through the cooling liquid line 11 by closing the closing valve 12.
  • the period of the cycle operation without dispensing cleaning fluid would be limited by the time it takes to fill the supply tank 4 from the current fill level to the maximum fill level, which is determined by the additional, upper fill level indicator.
  • Further pumps can be connected to the flow tank 4, which are driven in the same way by a motor cooled with cleaning liquid, whereby coolant as well as the liquid flowing via the bypass line are conveyed back into the flow tank.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)

Abstract

Appareil de nettoyage haute pression doté d'une pompe haute pression (2) pour liquide de nettoyage, qui est reliée du côté admission à un décanteur primaire (4), comprenant une conduite d'alimentation en liquide de nettoyage, et qui comporte sur la conduite de haute pression une conduite de dérivation (7) menant de la conduite de haute pression au décanteur primaire; ledit appareil de nettoyage haute pression est en outre doté d'un moteur électrique (1), qui entraîne la pompe haute pression (2) et qui comporte une conduite de liquide de refroidissement (11) où circule du liquide de nettoyage. Pour que le moteur électrique (1) soit refroidi de manière efficace même en mode de recyclage, sans perte de liquide de refroidissement, la conduite d'alimentation (13) du décanteur primaire a une capacité de débit supérieure à celle de la conduite de liquide de refroidissement (11), cette dernière débouchant dans le décanteur primaire (4), qui comporte des moyens de limitation du niveau de remplissage (15, 16, 17).
EP89906084A 1988-05-25 1989-05-23 Appareil de nettoyage haute pression Expired - Lifetime EP0444031B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89906084T ATE99571T1 (de) 1988-05-25 1989-05-23 Hochdruckreinigungsgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3817641A DE3817641A1 (de) 1988-05-25 1988-05-25 Hochdruckreinigungsgeraet
DE3817641 1988-05-25

Publications (2)

Publication Number Publication Date
EP0444031A1 true EP0444031A1 (fr) 1991-09-04
EP0444031B1 EP0444031B1 (fr) 1994-01-05

Family

ID=6355034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89906084A Expired - Lifetime EP0444031B1 (fr) 1988-05-25 1989-05-23 Appareil de nettoyage haute pression

Country Status (5)

Country Link
US (1) US5174730A (fr)
EP (1) EP0444031B1 (fr)
DE (1) DE3817641A1 (fr)
DK (1) DK279190A (fr)
WO (1) WO1989011345A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8823487B2 (en) 2009-07-14 2014-09-02 Alfred Kaercher Gmbh & Co. Kg Cleaning apparatus and method for controlling access to a cleaning apparatus
US9016291B2 (en) 2008-02-06 2015-04-28 Alfred Kaercher Gmbh & Co. Kg System for storing and dispensing liquid cleaning additive for a high-pressure cleaning appliance

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US6009596A (en) 1996-07-12 2000-01-04 Shop Vac Corporation Self-evacuating vacuum cleaner
US5918344A (en) * 1996-07-12 1999-07-06 Shop Vac Corporation Self-evacuating vacuum cleaner
US5966775A (en) 1996-07-12 1999-10-19 Shop Vac Corporation Self-evacuating vacuum cleaner
US5850668A (en) * 1996-07-12 1998-12-22 Shop Vac Corporation Self-evacuating vacuum cleaner
US5920955A (en) 1996-07-12 1999-07-13 Shop Vac Corporation Self-evacuating vacuum cleaner
US6079076A (en) * 1997-07-31 2000-06-27 Shop-Vac Corporation Vacuum cleaner collection bag
US6206980B1 (en) 1997-11-13 2001-03-27 Kaivac, Inc. Multi-functional cleaning machine
US6112366A (en) 1999-01-20 2000-09-05 Shop Vac Corporation Outlet priming self-evacuation vacuum cleaner
US7718013B2 (en) * 2001-12-19 2010-05-18 Hallgrimur Jonsson Apparatus and a method for cleaning enclosed spaces
US7384183B2 (en) * 2002-09-06 2008-06-10 Global Ground Support, Llc Mobile decontamination unit
US20040226584A1 (en) * 2003-05-14 2004-11-18 Michael Guest Multifunctional surface cleaning machine and method of using the same
US20120096671A1 (en) 2010-10-26 2012-04-26 Karcher North America, Inc. Floor cleaning apparatus employing a combined sweeper and vaccum assembly
US7533435B2 (en) 2003-05-14 2009-05-19 Karcher North America, Inc. Floor treatment apparatus
US20060064844A1 (en) * 2003-05-14 2006-03-30 Venard Daniel C Floating deck for use with a floor cleaning apparatus
US8302240B2 (en) 2009-07-29 2012-11-06 Karcher North America, Inc. Selectively adjustable steering mechanism for use on a floor cleaning machine
US20040226578A1 (en) * 2003-05-14 2004-11-18 Michael Guest Priming pump for multi-functional cleaning machine
US20050081898A1 (en) * 2003-10-15 2005-04-21 Steve Williams All purpose cleaning machine
DE102004063201A1 (de) * 2004-12-23 2006-07-06 Alfred Kärcher Gmbh & Co. Kg Flächenreinigungsgerät
DE102007009394A1 (de) 2007-02-21 2008-08-28 Alfred Kärcher Gmbh & Co. Kg Motorpumpeneinheit
DK2620228T3 (en) 2008-11-14 2017-08-21 Kaercher Gmbh & Co Kg Alfred Pressure Washer
WO2010091699A1 (fr) 2009-02-13 2010-08-19 Alfred Kärcher Gmbh & Co. Kg Unité moteur-pompe
DE102009010461A1 (de) 2009-02-13 2010-08-19 Alfred Kärcher Gmbh & Co. Kg Motorpumpeneinheit
WO2010091698A1 (fr) 2009-02-13 2010-08-19 Alfred Kärcher Gmbh & Co. Kg Unité moteur-pompe
USD654234S1 (en) 2010-12-08 2012-02-14 Karcher North America, Inc. Vacuum bag
US8978190B2 (en) 2011-06-28 2015-03-17 Karcher North America, Inc. Removable pad for interconnection to a high-speed driver system
USD693529S1 (en) 2012-09-10 2013-11-12 Karcher North America, Inc. Floor cleaning device
WO2018202301A1 (fr) 2017-05-04 2018-11-08 Alfred Kärcher SE & Co. KG Appareil de nettoyage des sols et procédé pour nettoyer la surface d'un sol
JP7130388B2 (ja) * 2018-02-28 2022-09-05 株式会社Kelk 液体加熱装置及び洗浄システム
IT201800011009A1 (it) * 2018-12-12 2020-06-12 Comet Spa Dispositivo alimentatore per una pistola erogatrice
USD907868S1 (en) 2019-01-24 2021-01-12 Karcher North America, Inc. Floor cleaner
DE102022119592A1 (de) 2022-08-04 2024-02-15 Alfred Kärcher SE & Co. KG Motorpumpeneinheit für ein hochdruckreinigungsgerät

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US2037245A (en) * 1934-11-07 1936-04-14 Frank J Leifheit Fluid separator
US2914253A (en) * 1956-05-25 1959-11-24 Continental Can Co Means for maintaining constant delivery from a fluid circuit
US3744935A (en) * 1971-10-07 1973-07-10 Crane Co Cooling systems for motor driven pumps and the like
DE3001571C2 (de) * 1980-01-17 1982-10-28 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgerät
DE3115698C1 (de) * 1981-04-18 1982-12-16 Alfred Kärcher GmbH & Co, 7057 Winnenden Motorpumpeneinheit fuer ein Hochdruckreinigungsgeraet

Non-Patent Citations (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9016291B2 (en) 2008-02-06 2015-04-28 Alfred Kaercher Gmbh & Co. Kg System for storing and dispensing liquid cleaning additive for a high-pressure cleaning appliance
US8823487B2 (en) 2009-07-14 2014-09-02 Alfred Kaercher Gmbh & Co. Kg Cleaning apparatus and method for controlling access to a cleaning apparatus

Also Published As

Publication number Publication date
DE3817641C2 (fr) 1991-02-07
DK279190D0 (da) 1990-11-23
DE3817641A1 (de) 1989-11-30
EP0444031B1 (fr) 1994-01-05
DK279190A (da) 1990-11-23
WO1989011345A1 (fr) 1989-11-30
US5174730A (en) 1992-12-29

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