EP1218640A1 - High pressure cleaning device - Google Patents

High pressure cleaning device

Info

Publication number
EP1218640A1
EP1218640A1 EP00967843A EP00967843A EP1218640A1 EP 1218640 A1 EP1218640 A1 EP 1218640A1 EP 00967843 A EP00967843 A EP 00967843A EP 00967843 A EP00967843 A EP 00967843A EP 1218640 A1 EP1218640 A1 EP 1218640A1
Authority
EP
European Patent Office
Prior art keywords
internal gear
pressure cleaning
cleaning device
high pressure
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
EP00967843A
Other languages
German (de)
French (fr)
Other versions
EP1218640B1 (en
Inventor
Peter Scharwaechter
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 EP1218640A1 publication Critical patent/EP1218640A1/en
Application granted granted Critical
Publication of EP1218640B1 publication Critical patent/EP1218640B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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 motor with an internal gear pump driven by the motor for conveying a cleaning liquid under high pressure to a discharge device.
  • Such a high-pressure cleaning device is known for example from DE 197 26 794.
  • the pump parts must therefore meet high requirements for corrosion resistance.
  • Internal gear pumps also require high tooth strength and high strength on the sealing surfaces.
  • the lubrication in the area of the moving parts of the internal gear pump is less than, for example, when pumping fuels or oily substances or oils.
  • the lubrication between the internal toothing of the ring gear and the external toothing of the internal gear takes place regularly through the medium to be pumped.
  • the associated wear of the moving parts in the mutual contact areas creates play in the area of the sealing surfaces, which leads to leaks at the sealing surfaces.
  • sintered materials have been used for internal gear pumps in high-pressure cleaning devices, some of which have been provided with coatings at the sealing points. It has also been proposed to use ceramics for such gear pumps.
  • the object and the aim of the invention is to find a material for the gears for high-pressure cleaning devices of the type described at the beginning with internal gear pumps that meets the above-mentioned requirements with regard to corrosion resistance and hardness.
  • This object is achieved in that in a high-pressure cleaning device with a motor, with an internal gear pump driven by the motor for conveying a cleaning liquid under high pressure to a discharge device, the internal gear and / or the external gear made of a molybdenum-containing chromium steel alloy with a nitrogen content of 0.1 - 1% exists.
  • chrome steel alloys with a nitrogen content of 0.2-1% in particular meet the requirements with regard to corrosion resistance.
  • chrome steel alloys with a nitrogen content of 0.3 - 1% is even better.
  • the material for the internal gear and / or the external gear has a molybdenum content between 0.8 and 2% by weight.
  • the number of process steps for producing the internal gears and / or the external gears is particularly low if they consist exclusively of the alloy according to the invention. In this case, no coatings on the sealing surfaces and / or similar processes are required.
  • a preferred embodiment of the invention is described below. Show
  • Figure 1 an inventive high pressure cleaning device
  • Figure 2 an embodiment of an internal gear pump
  • a drive motor (not shown) is arranged in a housing 1.
  • the drive motor can be an electric motor or an internal combustion engine.
  • a pump is driven by the motor which conveys cleaning liquid from the suction-side liquid inlet 2 of the high-pressure cleaning device to the pressure-side liquid outlet 3 of the internal gear pump.
  • the high-pressure hose 4 with the discharge device 5 is connected to the outlet 3 of the high-pressure cleaning device.
  • the internal gear pump can be a filler-free internal gear pump 6, the internal gear is shown schematically in FIG. 2, the tips of the tooth heads of the external gear internal gear not shown are arranged at the line 7, while the bottoms of the interdental spaces of the internal gear external gear are at the line 8 are located.
  • the internal gear pump can be of the gerotor type with an internal gear driven by the drive shaft 9 and a fixed external gear.
  • the internal gear pump can also be designed as an orbital pump with an internal gear driven by the drive shaft 9 and a fixed external gear. wheel. In an orbital pump, the internal gear moves in a planetary motion around the axis of rotation of the external gear. In internal gear pumps of this type, it is also known to compensate for wear that occurs as a result of relative movements of the sealing surfaces of the gear wheels perpendicular to their axes of rotation and thus for the approach of the same to one another.
  • the internal gear is rotatably supported about the axis of rotation 9.
  • An internal gear pump is preferably used in which the internal gear has one tooth less than the external gear.
  • the internal gear and the external gear of the internal gear pump 6 according to the invention consist of a chromium steel alloy with a chromium content of approximately 15%, a nitrogen content of approximately 0.4% and a molybdenum content of approximately 0.4%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Centrifugal Separators (AREA)
  • Mechanical Sealing (AREA)

Abstract

The invention relates to a high pressure cleaning device comprising a motor driving an internally toothed gearwheel pump for supply of a cleaning fluid, under high pressure, to an outlet device. Said internal tooth gear and/or an external tooth gear comprise a molybdenum containing chrome steel alloy which also contains a nitrogen component of 0.1 - 1 % and which increases the corrosion resistance and hardness of the toothed gearwheels.

Description

HOCHDRUCKREINIGUNGSGERAT HOCHDRUCKREINIGUNGSGERAT
Die Erfindung betrifft ein Hochdruckreinigungsgerät mit einem Motor mit einer von dem Motor angetriebenen Innen- zahnradpumpe zur Förderung einer Reinigungsflüssigkeit unter hohem Druck zu einer Austragsvorrichtung.The invention relates to a high-pressure cleaning device with a motor with an internal gear pump driven by the motor for conveying a cleaning liquid under high pressure to a discharge device.
Ein solches Hochdruckreinigungsgerät ist beispielsweise aus der DE 197 26 794 bekannt.Such a high-pressure cleaning device is known for example from DE 197 26 794.
Bei gattungsgemäßen Hochdruckreinigungsgeräten bestehen besonders hohe Anforderungen an die Korrosionsbeständigkeit der wasserführenden Teile, insbesondere der wasserführenden Pumpenteile. Mit solchen Hochdruckreinigungsgeräten wird im allgemeinen Wasser angesaugt. Da dieses Wasser zur Reinigung verwendet wird, muß es nicht Trinkwasserqualität haben und kann somit aus verschiedenen Quellen entnommen werden. Dabei muß es auch möglich sein, mit den Hochdruckreinigungsgeräten Flüssigkeiten mit aggressiven Anteilen zu fördern. Außerdem wird bei manchen Hochdruckreinigungsgeräten zusätzlich Reini- gungschemikalie angesaugt, die dann auch zusätzlich die Pumpenteile angreift.In the case of generic high-pressure cleaning devices, there are particularly high demands on the corrosion resistance of the water-carrying parts, in particular the water-carrying pump parts. With such high-pressure cleaning devices, water is generally sucked in. Since this water is used for cleaning, it does not have to be of drinking water quality and can therefore be taken from various sources. It must also be possible to use the high-pressure cleaning devices to convey liquids with aggressive proportions. In addition, some high-pressure cleaning devices also suck in cleaning chemicals, which then also attack the pump parts.
Die Pumpenteile müssen deshalb hohe Anforderungen an die Korrosionsfestigkeit erfüllen. Bei Innenzahnradpumpen sind außerdem eine hohe Zahnfestigkeit und eine hohe Festigkeit an den Dichtflächen erforderlich. Besonders bei der Verwendung von Innenzahnradpumpen zur Förderung von Wasser ist die Schmierung im Bereich der bewegten Teile der Innenzahnradpumpe geringer als beispielsweise bei der Förderung von Brennstoffen oder ölhaltigen Stoffen oder Ölen. Bei Innenzahnradpumpen erfolgt die Schmierung zwischen Innenverzahnung des Hohlrades und Außenverzahnung des Innenrades regelmäßig durch das zu fördernde Medium. Durch den damit verbundenen Verschleiß der bewegten Teile in den gegenseitigen Berührungsbereichen entsteht im Bereich der Dichtflächen Spiel, welches zu Undichtigkeiten an den Dichtflächen führt .The pump parts must therefore meet high requirements for corrosion resistance. Internal gear pumps also require high tooth strength and high strength on the sealing surfaces. Especially when using internal gear pumps to pump water, the lubrication in the area of the moving parts of the internal gear pump is less than, for example, when pumping fuels or oily substances or oils. In internal gear pumps, the lubrication between the internal toothing of the ring gear and the external toothing of the internal gear takes place regularly through the medium to be pumped. The associated wear of the moving parts in the mutual contact areas creates play in the area of the sealing surfaces, which leads to leaks at the sealing surfaces.
Um diese Verschleißwirkungen zu verringern, hat man für Innenzahnradpumpen bisher bei Hochdruckreinigungsgeräten Sinterwerkstoffe eingesetzt, die teilweise mit Beschichtungen an den Dichtstellen versehen wurden. Außerdem wurde vorgeschlagen, für solche Zahnradpumpen Keramik zu verwenden.In order to reduce these wear effects, sintered materials have been used for internal gear pumps in high-pressure cleaning devices, some of which have been provided with coatings at the sealing points. It has also been proposed to use ceramics for such gear pumps.
Mit diesen bisher vorgeschlagenen Werkstoffen konnten jedoch bei Hochdruckreinigungsgeräten mit Innenzahnradpumpe bisher nicht die erforderlichen Standzeiten hinsichtlich Korrosions- und Verschleißfestigkeit erreicht werden.With the materials previously proposed, however, the necessary service life in terms of resistance to corrosion and wear has not been achieved in high-pressure cleaning devices with an internal gear pump.
Die Aufgabe und das Ziel der Erfindung bestehen darin, für Hochdruckreinigungsgeräte der eingangs beschriebenen Art mit Innenzahnradpumpen einen Werkstoff für die Zahnräder zu finden, der die oben genannten Anforderungen hinsichtlich Korrosionsbeständigkeit und Härte erfüllt. Diese Aufgabe wird dadurch gelöst, daß bei einem Hochdruckreinigungsgerät mit einem Motor, mit einer von dem Motor angetriebenen Innenzahnradpumpe zur Förderung einer Reinigungsflüssigkeit unter hohem Druck zu einer Austragsvorrichtung das Innenzahnrad und/oder das Außenzahnrad aus einer molybdänhaltigen Chromstahllegierung mit einem Stickstoffanteil von 0,1 - 1 % besteht.The object and the aim of the invention is to find a material for the gears for high-pressure cleaning devices of the type described at the beginning with internal gear pumps that meets the above-mentioned requirements with regard to corrosion resistance and hardness. This object is achieved in that in a high-pressure cleaning device with a motor, with an internal gear pump driven by the motor for conveying a cleaning liquid under high pressure to a discharge device, the internal gear and / or the external gear made of a molybdenum-containing chromium steel alloy with a nitrogen content of 0.1 - 1% exists.
Es hat sich herausgestellt, daß besonders Chromstahllegierungen mit einem Stickstoffanteil von 0,2 - 1 % die Anforderungen hinsichtlich der Korrosionsfestigkeit erfüllen.It has been found that chrome steel alloys with a nitrogen content of 0.2-1% in particular meet the requirements with regard to corrosion resistance.
Noch besser ist die Verwendung von Chromstahllegierungen mit einem Stickstoffanteil von 0,3 - 1 %.The use of chrome steel alloys with a nitrogen content of 0.3 - 1% is even better.
Zur Erhöhung der Korrosionsfestigkeit ist es besonders günstig, wenn das Material für das Innenzahnrad und/oder das Außenzahnrad einen Molybdängehalt zwischen 0,8 und 2 Gew.% aufweist.To increase the corrosion resistance, it is particularly favorable if the material for the internal gear and / or the external gear has a molybdenum content between 0.8 and 2% by weight.
Besonders hohe Festigkeiten werden bei erfindungsgemäßen Legierungen mit einem Chromgehalt in der Legierung zwischen 9 und 16 Gew.% erreicht.Particularly high strengths are achieved in alloys according to the invention with a chromium content in the alloy between 9 and 16% by weight.
Die Zahl der Verfahrensschritte zur Herstellung der Innenzahnräder und/oder der Außenzahnräder ist besonders niedrig, wenn diese ausschließlich aus der erfindungsgemäßen Legierung bestehen. In diesem Fall sind keine Beschichtungen an den Dichtflächen und/oder ähnliche Verfahren erforderlich. Im folgenden wird ein bevorzugtes Ausführungsbeispiel der Erfindung beschrieben. Dabei zeigenThe number of process steps for producing the internal gears and / or the external gears is particularly low if they consist exclusively of the alloy according to the invention. In this case, no coatings on the sealing surfaces and / or similar processes are required. A preferred embodiment of the invention is described below. Show
Figur 1 : ein erfindungsgemäßes HochdruckreinigungsgerätFigure 1: an inventive high pressure cleaning device
Figur 2: ein Ausführungsbeispiel einer InnenzahnradpumpeFigure 2: an embodiment of an internal gear pump
Bei dem Hochdruckreinigungsgerät gemäß dem bevorzugten Ausführungsbeispiel ist in einem Gehäuse 1 ein nicht dargestellter Antriebsmotor angeordnet. Der Antriebsmotor kann ein Elektromotor oder ein Verbrennungsmotor sein. Von dem Motor wird eine Pumpe angetrieben, die Reinigungsflüssigkeit vom saugseitigen Flüssigkeitseingang 2 des Hochdruckreinigungsgerätes zum druckseitigen Flüssigkeitsausgang 3 der Innenzahnradpumpe fördert. An den Ausgang 3 des Hochdruckreinigungsgerätes wird der Hochdruckschlauch 4 mit der Austragsvorrichtung 5 angeschlossen.In the high-pressure cleaning device according to the preferred exemplary embodiment, a drive motor (not shown) is arranged in a housing 1. The drive motor can be an electric motor or an internal combustion engine. A pump is driven by the motor which conveys cleaning liquid from the suction-side liquid inlet 2 of the high-pressure cleaning device to the pressure-side liquid outlet 3 of the internal gear pump. The high-pressure hose 4 with the discharge device 5 is connected to the outlet 3 of the high-pressure cleaning device.
Die Innenzahnradpumpe kann eine füllstücklose Innenzahnradpumpe 6 sein, in Figur 2 ist schematisch das Innenzahnrad dargestellt, wobei die Spitzen der nicht dargestellten Zahnköpfe des außenverzahnten Innenzahnrades auf Höhe der Linie 7 angeordnet sind, während die Böden der Zahnzwischenräume des innenverzahnten Außenzahnrades sich auf Höhe der Linie 8 befinden. Die Innenzahnradpumpe kann vom Typ einer Gerotorpumpe mit von der Antriebswelle 9 angetriebenem Innenzahnrad und feststehendem Außenzahnrad sein. Die Innenzahnradpumpe kann auch als Orbitpumpe ausgeführt sein mit von der Antriebswelle 9 angetriebenem Innenzahnrad und feststehendem Außenzahn- rad. Bei einer Orbitpumpe bewegt sich das Innenzahnrad in einer planetenartigen Bewegung um die Drehachse des Außenzahnrades. Bei solchen Innenzahnradpumpen ist es auch bekannt, entstehenden Verschleiß durch Relativbewegungen der Dichtflächen der Zahnräder senkrecht zu deren Drehachsen und damit Annäherung derselben zueinander auszugleichen.The internal gear pump can be a filler-free internal gear pump 6, the internal gear is shown schematically in FIG. 2, the tips of the tooth heads of the external gear internal gear not shown are arranged at the line 7, while the bottoms of the interdental spaces of the internal gear external gear are at the line 8 are located. The internal gear pump can be of the gerotor type with an internal gear driven by the drive shaft 9 and a fixed external gear. The internal gear pump can also be designed as an orbital pump with an internal gear driven by the drive shaft 9 and a fixed external gear. wheel. In an orbital pump, the internal gear moves in a planetary motion around the axis of rotation of the external gear. In internal gear pumps of this type, it is also known to compensate for wear that occurs as a result of relative movements of the sealing surfaces of the gear wheels perpendicular to their axes of rotation and thus for the approach of the same to one another.
Das Innenzahnrad ist dabei um die Drehachse 9 drehbar gelagert. Es kommt vorzugsweise eine Innenzahnradpumpe zum Einsatz, bei der das Innenzahnrad einen Zahn weniger aufweist, als das Außenzahnrad.The internal gear is rotatably supported about the axis of rotation 9. An internal gear pump is preferably used in which the internal gear has one tooth less than the external gear.
Die Funktionsweise der Innenzahnradpumpe ist aus dem Stand der Technik hinreichend bekannt, dazu wird beispielsweise verwiesen auf die DE 197 26 794.The mode of operation of the internal gear pump is sufficiently known from the prior art; reference is made, for example, to DE 197 26 794.
Bei dem bevorzugten Ausführungsbeispiel bestehen Innenzahnrad und Außenzahnrad der erfindungsgemäßen Innenzahnradpumpe 6 aus einer Chromstahllegierung mit einem Chromgehalt von ca. 15 %, einem Stickstoffgehalt von ca. 0,4 % sowie einem Molybdängehalt von ca. 0,4 %. In the preferred embodiment, the internal gear and the external gear of the internal gear pump 6 according to the invention consist of a chromium steel alloy with a chromium content of approximately 15%, a nitrogen content of approximately 0.4% and a molybdenum content of approximately 0.4%.

Claims

PATENTANSPRÜCHE
1. Hochdruckreinigungsgerät mit einem Motor, und mit einer von dem Motor angetriebenen Innenzahnradpumpe zur Förderung einer Reinigungsflüssigkeit unter hohem Druck zu einer Austragsvorrichtung, dadurch gekennzeichnet, daß das Innenzahnrad und/oder das Außenzahnrad aus einer molybdänhaltigen Chromstahllegierung mit einem Stickstoffanteil von 0,1 - 1 % besteht.1. High-pressure cleaning device with a motor, and with an internal gear pump driven by the motor for conveying a cleaning fluid under high pressure to a discharge device, characterized in that the internal gear and / or the external gear made of a molybdenum-containing chromium steel alloy with a nitrogen content of 0.1-1 % consists.
2. Hochdruckreinigungsgerät nach Anspruch 1 , dadurch gekennzeichnet, daß das Innenzahnrad und/oder das Außenzahnrad aus einer molybdänhaltigen Chromstahl- legierung mit einem Stickstoffanteil von 0,2 - 1 % besteht.2. High-pressure cleaning device according to claim 1, characterized in that the internal gear and / or the external gear consists of a molybdenum-containing chromium steel alloy with a nitrogen content of 0.2-1%.
3. Hochdruckreinigungsgerät nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß das Innenzahnrad und/oder das Außenzahnrad aus einer molybdänhaltigen Chromstahllegierung mit einem Stickstoffanteil von 0,3 - 1 % besteht.3. High-pressure cleaning device according to one of claims 1 or 2, characterized in that the internal gear and / or the external gear consists of a molybdenum-containing chromium steel alloy with a nitrogen content of 0.3-1%.
4. Hochdruckreinigungsgerät nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Molybdängehalt der Chromstahllegierung zwischen 0,8 und4. High-pressure cleaning device according to one of claims 1 or 2, characterized in that the molybdenum content of the chromium steel alloy is between 0.8 and
2 Gew.% liegt. 2% by weight.
5. Hochdruckreinigungsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Chromgehalt in der Legierung zwischen 9 und 16 Gew.% liegt.5. High-pressure cleaning device according to one of the preceding claims, characterized in that the chromium content in the alloy is between 9 and 16% by weight.
6. Hochdruckreinigungsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Innenzahnrad und/oder Außenzahnrad ausschließlich aus der erfindungsgemäßen Legierung besteht. 6. High-pressure cleaning device according to one of the preceding claims, characterized in that the internal gear and / or external gear consists exclusively of the alloy according to the invention.
EP00967843A 1999-10-08 2000-10-06 High pressure cleaning device Expired - Lifetime EP1218640B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19948860A DE19948860A1 (en) 1999-10-08 1999-10-08 High pressure cleaning device
DE19948860 1999-10-08
PCT/EP2000/009819 WO2001027476A1 (en) 1999-10-08 2000-10-06 High pressure cleaning device

Publications (2)

Publication Number Publication Date
EP1218640A1 true EP1218640A1 (en) 2002-07-03
EP1218640B1 EP1218640B1 (en) 2003-01-15

Family

ID=7925185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00967843A Expired - Lifetime EP1218640B1 (en) 1999-10-08 2000-10-06 High pressure cleaning device

Country Status (8)

Country Link
EP (1) EP1218640B1 (en)
CN (1) CN1215259C (en)
AT (1) ATE231219T1 (en)
AU (1) AU7786200A (en)
DE (2) DE19948860A1 (en)
DK (1) DK1218640T3 (en)
ES (1) ES2189769T3 (en)
WO (1) WO2001027476A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7556210B2 (en) * 2006-05-11 2009-07-07 S. C. Johnson & Son, Inc. Self-contained multi-sprayer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1270122A (en) * 1969-03-06 1972-04-12 Plessey Co Ltd Improvements in or relating to gear pumps
JPS5837162A (en) * 1981-08-31 1983-03-04 Toshiba Corp Pump and its manufacture
JPH01246343A (en) * 1988-03-25 1989-10-02 Daido Steel Co Ltd Stainless steel
JPH06336652A (en) * 1993-05-27 1994-12-06 Agency Of Ind Science & Technol Stainless forged steel for seawater pump of atomic power plant
JPH09195004A (en) * 1995-11-10 1997-07-29 Mitsubishi Heavy Ind Ltd Stainless steel
DE19726794A1 (en) 1997-06-24 1999-01-07 Elektra Beckum Ag Water high pressure cleaning device
JPH1180911A (en) * 1997-09-11 1999-03-26 Nippon Steel Corp High purity chromium steel sheet for pump impeller

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0127476A1 *

Also Published As

Publication number Publication date
ES2189769T3 (en) 2003-07-16
DE19948860A1 (en) 2001-04-12
DE50001121D1 (en) 2003-02-20
WO2001027476A1 (en) 2001-04-19
AU7786200A (en) 2001-04-23
ATE231219T1 (en) 2003-02-15
CN1215259C (en) 2005-08-17
EP1218640B1 (en) 2003-01-15
CN1378621A (en) 2002-11-06
DK1218640T3 (en) 2003-02-24

Similar Documents

Publication Publication Date Title
DE3312868C2 (en) Hydraulic pump
EP2054626B1 (en) Method for reacting self-igniting dusts in a vacuum pump device
DE2825616C2 (en) Bearing and sealing arrangement on the shafts of a gear pump
DE19513380C2 (en) Sealing, storage and drive of the rotors of a dry-running screw rotor compressor
EP0955466B1 (en) Annular gap seal
EP2464868A1 (en) Diaphragm machine
DE102012112618B3 (en) Multiple pump
DE2048301A1 (en) Measuring and Spulol pump
EP1218640B1 (en) High pressure cleaning device
WO2005019650A1 (en) Volume flowrate-variable rotor pump
DE759960C (en) Gear pump
EP1831570B1 (en) Pump, especially slurry pump
EP0713974A1 (en) Moineau pump
EP3961035A1 (en) Method and screw spindle pump for supplying a gas-liquid mix
DE102009029293A1 (en) Gear pump with a drive shaft, a drive gear and a driven gear
CH647048A5 (en) GEAR PUMP.
EP1519044B1 (en) Rotary piston type pump, in particular for pumping particle loaded fluids
EP0520943B1 (en) Positive displacement pump
DE2351124A1 (en) ROTARY LISTON DISPLACEMENT PUMP FOR PUMPING LIQUID FUEL
DE102005022470B4 (en) Rotor pair for screw compressors
EP2049793A1 (en) Vehicle brake system piston pump comprising a piston
EP0833056B1 (en) Method for shaft positioning and gear pump
AT3447U1 (en) DRIVE ARRANGEMENT FOR Auxiliary Units of Internal Combustion Engines
DE102009019220B4 (en) Screw Pump
DE2049116A1 (en) Device for the continuous conveyance and mixing of liquids

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: 20020315

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030115

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030115

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030115

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030115

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50001121

Country of ref document: DE

Date of ref document: 20030220

Kind code of ref document: P

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030415

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030415

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ALFRED KAERCHER GMBH & CO. KG

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

Effective date: 20030430

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20030115

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2189769

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 1218640E

Country of ref document: IE

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

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

Effective date: 20031006

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031006

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

Ref country code: MC

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

Effective date: 20031031

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

Effective date: 20031016

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

Ref country code: CH

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

Effective date: 20041031

Ref country code: LI

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

Effective date: 20041031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: BE

Payment date: 20070911

Year of fee payment: 8

Ref country code: DE

Payment date: 20071123

Year of fee payment: 8

Ref country code: DK

Payment date: 20071015

Year of fee payment: 8

Ref country code: ES

Payment date: 20071011

Year of fee payment: 8

Ref country code: IT

Payment date: 20070924

Year of fee payment: 8

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

Ref country code: AT

Payment date: 20070823

Year of fee payment: 8

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

Ref country code: FR

Payment date: 20070814

Year of fee payment: 8

Ref country code: GB

Payment date: 20071003

Year of fee payment: 8

BERE Be: lapsed

Owner name: ALFRED *KARCHER G.M.B.H. & CO.

Effective date: 20081031

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

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

Effective date: 20081006

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090630

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

Ref country code: AT

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

Effective date: 20081006

Ref country code: DE

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

Effective date: 20090501

Ref country code: IT

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

Effective date: 20081006

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

Ref country code: BE

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

Effective date: 20081031

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

Ref country code: FR

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

Effective date: 20081031

Ref country code: DK

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

Effective date: 20081031

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: 20081006

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20081007

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

Ref country code: ES

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

Effective date: 20081007