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EP0444031B1 - Hochdruckreinigungsgerät - Google Patents

Hochdruckreinigungsgerät Download PDF

Info

Publication number
EP0444031B1
EP0444031B1 EP89906084A EP89906084A EP0444031B1 EP 0444031 B1 EP0444031 B1 EP 0444031B1 EP 89906084 A EP89906084 A EP 89906084A EP 89906084 A EP89906084 A EP 89906084A EP 0444031 B1 EP0444031 B1 EP 0444031B1
Authority
EP
European Patent Office
Prior art keywords
line
pressure
liquid
cleaning liquid
forerun
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
EP89906084A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0444031A1 (de
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/de
Application granted granted Critical
Publication of EP0444031B1 publication Critical patent/EP0444031B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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 supply tank provided with a supply line for cleaning liquid and which has a bypass line branching from the supply pipe leading to the supply tank, and with an electric motor driving the high-pressure pump , which has a cooling liquid line through which cleaning liquid flows.
  • This level limitation can be an overflow pipe. but it can also be provided that the fill level limitation comprises a fill level indicator in the flow tank, a closing valve actuated by it in the coolant line and a switch for switching off the electric motor.
  • the coolant line is always supplied with fresh cleaning liquid, i.e. not preheated coolant, which is then fed into the flow tank and gradually fills it up until it is full.
  • the fill level limitation prevents excessive filling of the flow tank. Since the proportion of the total cleaning liquid that flows through the cooling liquid line is small in relation to the main part, effective engine cooling can be obtained in bypass operation over a longer period of time, the cooling liquid not being lost, but being collected in the supply tank can.
  • a closing member is provided in the flow container, and an upper and a lower level indicator for actuating the closing member.
  • the flow tank is filled essentially via the supply line, and 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 limit. 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 flowing 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 electric motor can continue to 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 relative 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, for example a conventional swash plate piston pump. This sucks in cleaning fluid from a supply tank 4 via a suction line 3 and releases this cleaning fluid via a pressure line 5.
  • the cleaning liquid conveyed 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 into the pressure line.
  • a coolant line 11 is assigned to the electric motor 1 and can be helically guided in the stator housing, for example.
  • a closing valve 12 is switched on in this coolant line. Like the bypass line 7, it leads into the feed tank 4.
  • This closing valve 14 is opened by a lower level indicator 15 and closed by an upper level indicator 16.
  • 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 flow tank through the feed 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 such 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 through 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 feed line is preferably connected to a supply for heated cleaning liquid, not shown in the drawing, so that the supply tank with heated cleaning liquid is filled, for example at a temperature of 80 ° C. This temperature can be determined with a sensor 18.
  • the cooling liquid line 11 is connected to a supply of cold cleaning liquid, so that the cold cleaning liquid brings about very effective cooling of the electric motor.
  • the coolant is warmed up as it passes through the electric motor and then reaches the flow tank. Even if the temperature of the cooling liquid does not reach the temperature of the cleaning liquid supplied through the supply line 13, the temperature in the supply tank is not reduced very much as a result, since the proportion of the liquid flow entering via the cooling liquid line is small compared to that of the supply line.
  • the cleaning liquid is always fed in simultaneously from the feed line 13 and from the coolant line 11, the feed 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 conveyed by the high-pressure pump 2 is then returned to the flow tank 4.
  • cleaning fluid continues to flow through the electric motor and effectively cools it.
  • the cleaning liquid finally gets into the flow tank and fills it up until the fill level is reached through 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 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 flow 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 liquid 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, cooling liquid as well as the liquid flowing via the bypass line being conveyed back into the flow tank.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
EP89906084A 1988-05-25 1989-05-23 Hochdruckreinigungsgerät Expired - Lifetime EP0444031B1 (de)

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
DE3817641 1988-05-25
DE3817641A DE3817641A1 (de) 1988-05-25 1988-05-25 Hochdruckreinigungsgeraet

Publications (2)

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

Family

ID=6355034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89906084A Expired - Lifetime EP0444031B1 (de) 1988-05-25 1989-05-23 Hochdruckreinigungsgerät

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024028034A1 (de) * 2022-08-04 2024-02-08 Alfred Kärcher SE & Co. KG Motorpumpeneinheit für ein hochdruckreinigungsgerät

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5850668A (en) * 1996-07-12 1998-12-22 Shop Vac Corporation Self-evacuating vacuum cleaner
US5966775A (en) 1996-07-12 1999-10-19 Shop Vac Corporation Self-evacuating vacuum cleaner
US5918344A (en) 1996-07-12 1999-07-06 Shop Vac Corporation Self-evacuating vacuum cleaner
US5920955A (en) 1996-07-12 1999-07-13 Shop Vac Corporation Self-evacuating vacuum cleaner
US6009596A (en) 1996-07-12 2000-01-04 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
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
US20120096671A1 (en) 2010-10-26 2012-04-26 Karcher North America, Inc. Floor cleaning apparatus employing a combined sweeper and vaccum assembly
US20040226578A1 (en) * 2003-05-14 2004-11-18 Michael Guest Priming pump for multi-functional cleaning machine
US7533435B2 (en) 2003-05-14 2009-05-19 Karcher North America, Inc. Floor treatment apparatus
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
DE102008009221A1 (de) 2008-02-06 2009-08-13 Alfred Kärcher Gmbh & Co. Kg System zur Bevorratung und Abgabe von flüssigem Reinigungszusatz für Hochdruckreinigungsgerät
DK2620228T3 (da) 2008-11-14 2017-08-21 Kaercher Gmbh & Co Kg Alfred Højtryksrenser
DK2396550T3 (da) 2009-02-13 2014-05-26 Kaercher Gmbh & Co Kg Alfred Motorpumpeenhed
WO2010091698A1 (de) 2009-02-13 2010-08-19 Alfred Kärcher Gmbh & Co. Kg Motorpumpeneinheit
DE102009010461A1 (de) 2009-02-13 2010-08-19 Alfred Kärcher Gmbh & Co. Kg Motorpumpeneinheit
DE102009033944A1 (de) 2009-07-14 2011-01-20 Alfred Kärcher Gmbh & Co. Kg Reinigungsvorrichtung sowie Verfahren zur Kontrolle des Zugriffs auf eine Reinigungsvorrichtung
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 (de) 2017-05-04 2018-11-08 Alfred Kärcher SE & Co. KG Bodenreinigungsgerät und verfahren zum reinigen einer bodenfläche
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024028034A1 (de) * 2022-08-04 2024-02-08 Alfred Kärcher SE & Co. KG Motorpumpeneinheit für ein hochdruckreinigungsgerät

Also Published As

Publication number Publication date
EP0444031A1 (de) 1991-09-04
DK279190D0 (da) 1990-11-23
WO1989011345A1 (en) 1989-11-30
DE3817641A1 (de) 1989-11-30
US5174730A (en) 1992-12-29
DK279190A (da) 1990-11-23
DE3817641C2 (da) 1991-02-07

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