EP0242550B1 - Motor pump unit for a high-pressure cleansing apparatus - Google Patents

Motor pump unit for a high-pressure cleansing apparatus Download PDF

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Publication number
EP0242550B1
EP0242550B1 EP87103279A EP87103279A EP0242550B1 EP 0242550 B1 EP0242550 B1 EP 0242550B1 EP 87103279 A EP87103279 A EP 87103279A EP 87103279 A EP87103279 A EP 87103279A EP 0242550 B1 EP0242550 B1 EP 0242550B1
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EP
European Patent Office
Prior art keywords
motor
housing
pump
pump unit
component
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
EP87103279A
Other languages
German (de)
French (fr)
Other versions
EP0242550A2 (en
EP0242550A3 (en
Inventor
Werner Ing.(Grad.) Schulze
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 AT87103279T priority Critical patent/ATE56505T1/en
Publication of EP0242550A2 publication Critical patent/EP0242550A2/en
Publication of EP0242550A3 publication Critical patent/EP0242550A3/en
Application granted granted Critical
Publication of EP0242550B1 publication Critical patent/EP0242550B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/145—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors

Definitions

  • the invention relates to a motor pump unit of a high-pressure cleaning device with an electric motor arranged in a motor housing, the motor shaft of which projects into a pump housing and drives the piston or pistons of a high-pressure pump there via a gear, the motor housing and the pump housing being designed as a one-piece component.
  • Motor pump units of this type are used in high-pressure cleaning devices in order to supply cleaning liquid, in particular water, to a spraying device under a high pressure, for example in the order of magnitude of 200 bar.
  • a high pressure for example in the order of magnitude of 200 bar.
  • efforts are made to arrange the motor and pump as close as possible to one another.
  • it is known to form the housing of the pump unit directly in one piece with the housing of the motor (DG A 3 404 056).
  • a motor pump unit of the type described in the introduction in that a chamber for receiving the electrical installation of the motor is integrally formed in the area of the pump housing on the one-piece housing component to the outside and to the interior of the motor housing.
  • the common component thus also takes over the recording of the electrical installation, so that a separate component is no longer necessary for this.
  • the one-piece housing component is an aluminum casting.
  • flow paths for a cooling liquid surrounding the interior are embedded in the motor housing, the flow path in particular being able to surround the interior in a helical shape or being designed as an annular chamber surrounding the interior.
  • the one-piece housing component has a transverse wall in the transition of the motor housing into the pump housing, which receives a bearing for the motor shaft.
  • the motor shaft can pass through the transverse wall in a sealed manner.
  • the outside diameter of the pump housing is smaller than the outside diameter of the motor housing.
  • the one-piece housing component is open on the sides facing away from one another. This makes it possible to insert the motor parts from the open side into the motor housing part and the pump parts or the corresponding gear parts into the pump housing part, the open sides then being closed on the motor part by a cover and on the pump part by fitting the cylinder head of the pump can be.
  • the motor pump unit 1 shown in FIG. 1 comprises a cylindrical motor housing 2, on the outside of which radially outwardly projecting cooling fins 3 are arranged.
  • the motor housing 2 is open on one side and closed by a cover 4, which carries a ball bearing 6 in a central opening 5 for the mounting of a motor shaft 7, which is mounted in a second ball bearing 8 in a closing wall 9 of the motor housing 2 a second time .
  • the motor shaft 7 carries a rotor 11 which interacts with a stator winding 10 arranged in the interior of the motor housing 2 in the known manner.
  • the motor shaft 7 protrudes from the housing and carries a fan wheel 12, which in operation allows cooling air to flow over the outer surface of the motor housing 2 and along the cooling fins 3.
  • a pump housing 13 with a smaller outer diameter is molded onto the motor housing 2, so that a one-piece component 14 formed from the pump housing 13 and the motor housing 2 is formed.
  • the pump housing 13 is open on the side opposite the end wall 9, in the region of the end wall 9 it is sealed off from the interior of the motor housing 2 by a seal 15 resting on the motor shaft 7.
  • the end of the motor shaft 7 protruding into the pump housing 13 carries a swash plate 16 which rests in the piston 17 of a high-pressure pump which is only partially shown in the drawing and thereby moves the pistons oscillating parallel to their longitudinal axis when they rotate.
  • the pistons are mounted in a cylinder head 18, only partially shown in the drawing, which is sealed against the open end of the pump housing 13, so that the pistons 17 partially protrude into the pump housing 13.
  • the one-piece component 14 is preferably an aluminum die-cast part. Since this component is open on both sides, the corresponding parts can be used in a simple manner from both sides during assembly, a complex connection of a separate pump housing to a separate motor housing being eliminated due to the one-piece design.
  • This chamber 19 is also formed in one piece with the component 14 results in a particularly compact construction, since separate connecting means can also be omitted in this area.
  • FIG. 1 While the exemplary embodiment in FIG. 1 is provided with cooling fins 3 in the area of the motor housing 2, a helical flow path 20 for a cooling liquid is embedded in the component 14, which comprises the motor housing and the pump housing, in the wall of the motor housing 2, so that a cooling liquid flows around the inner space receiving the electric motor and thereby cools it.
  • the cleaning liquid delivered by the pump is preferably used as the cooling liquid.
  • a flow path 20 is provided in the form of an annular chamber surrounding the interior of the motor housing 2, otherwise the components 14 (FIGS. 2 and 3) are constructed the same as the corresponding one, with the exception of the cooling fins 3 Component 14 in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

1. Motor pump unit of a high-pressure cleansing apparatus, comprising an electromotor arranged in a motor housing, the shaft of said motor protruding into a pump housing where it drives the piston or pistons of a high-pressure pump via a gear unit, said motor housing (2) and said pump housing (13) being designed as a one-piece component (14), characterized in that in the region of said pump housing (13) a chamber (19) accommodating the electrical installation of said motor is formed onto said one-piece housing component (14), said chamber being open outwardly and towards the interior space of said motor housing (2).

Description

Die Erfindung betrifft eine Motorpumpeneinheit eines Hochdruckreinigungsgerätes mit einem in einem Motorgehäuse angeordneten Elektromotor, dessen Motorwelle in ein Pumpengehäuse hineinragt und dort über ein Getriebe den oder die Kolben einer Hochdruckpumpe antreibt, wobei das Motorgehäuse und das Pumpengehäuse als einstückiges Bauteil ausgebildet sind.The invention relates to a motor pump unit of a high-pressure cleaning device with an electric motor arranged in a motor housing, the motor shaft of which projects into a pump housing and drives the piston or pistons of a high-pressure pump there via a gear, the motor housing and the pump housing being designed as a one-piece component.

Motorpumpeneinheiten dieser Art werden in Hochdruckreinigungsgeräten verwendet, um Reinigungsflüssigkeit, insbesondere Wasser- unter einem hohen Druck, beispielsweise in der Größenordnung von 200 Bar, einer Spritzvorrichtung zuzuführen. Um Hochdruckreinigungsgeräte in ihren Abmessungen möglichst klein zu bauen, ist man bemüht, Motor und Pumpe möglichst dicht nebeneinander anzuordnen. Es ist beispielsweise bekannt, das Gehäuse der Pumpeneinheit unmittelbar einstückig mit dem Gehäuse des Motors auszubilden (DG A 3 404 056).Motor pump units of this type are used in high-pressure cleaning devices in order to supply cleaning liquid, in particular water, to a spraying device under a high pressure, for example in the order of magnitude of 200 bar. In order to make high-pressure cleaning devices as small as possible, efforts are made to arrange the motor and pump as close as possible to one another. For example, it is known to form the housing of the pump unit directly in one piece with the housing of the motor (DG A 3 404 056).

Es ist Aufgabe der Erfindung, eine gattungsgemäße Motorpumpeneinheit dadurch zu verbessern, daß der Aufbau weiter vereinfacht und eine Möglichkeit zur Aufnahme elektrischer Bauteile geschaffen wird, die keine zusätzlichen Montagearbeiten am Gehäuse erfordert.It is an object of the invention to improve a generic motor pump unit in that the structure is further simplified and a possibility is created for accommodating electrical components which does not require any additional assembly work on the housing.

Diese Aufgabe wird bei einer Motorpumpeneinheit der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß im Bereich des Pumpengehäuses an das einstückige Gebhäusebauteil eine nach außen hin und zum Innenraum des Motorgehäuses hin offene Kammer zur Aufnahme der Elektroinstallation des Motors angeformt ist. Das gemeinsame Bauteil übernimmt somit zusätzlich die Aufnahme der Elektroinstallation, so daß hierfür kein getrenntes Bauteil mehr notwendig ist.This object is achieved according to the invention in a motor pump unit of the type described in the introduction in that a chamber for receiving the electrical installation of the motor is integrally formed in the area of the pump housing on the one-piece housing component to the outside and to the interior of the motor housing. The common component thus also takes over the recording of the electrical installation, so that a separate component is no longer necessary for this.

Günstig ist es, wenn das einstückige Gehäusebauteil ein Aluminiumgußteil ist.It is advantageous if the one-piece housing component is an aluminum casting.

Besonders vorteilhaft ist es, wenn in das Motorgehäuse den Innenraum umgebende Strömungswege für eine Kühlflüssigkeit eingelassen sind, wobei der Strömungsweg insbesondere den Innenraum wendelförmig umgeben kann oder als den Innenraum umgebende Ringkammer ausgebildet ist.It is particularly advantageous if flow paths for a cooling liquid surrounding the interior are embedded in the motor housing, the flow path in particular being able to surround the interior in a helical shape or being designed as an annular chamber surrounding the interior.

Ein besonders kompakter Aufbau ergibt sich, wenn das einstückige Gehäusebauteil im Ubergang des Motorgehäuses in das Pumpengehäuse eine Querwand aufweist, die ein Lager für die Motorwelle aufnimmt. Außerdem kann die Motorwelle die Querwand abgedichtet durchsetzen.A particularly compact construction results if the one-piece housing component has a transverse wall in the transition of the motor housing into the pump housing, which receives a bearing for the motor shaft. In addition, the motor shaft can pass through the transverse wall in a sealed manner.

Bei einem bevorzugten Ausführungsbeispiel ist der Außendurchmesser des Pumpengehäuses kleiner als der Außendurchmesser des Motorgehäuses.In a preferred embodiment, the outside diameter of the pump housing is smaller than the outside diameter of the motor housing.

Gemäß einer bevorzugten Ausführungsform ist das einstückige Gehäusebauteil auf den einander abgewandten Seiten offen. Dadurch ist es möglich, von der offenen Seite her in den Motorgehäuseteil die Motorteile und in den Pumpengehäuseteil die Pumpenteile bzw. die entsprechenden Getriebeteile einzusetzen, wobei die offenen Seiten anschließend auf dem Motorteil durch einen Deckel und auf dem Pumpenteil durch Aufsetzen des Zylinderkopfes der Pumpe abgeschlossen werden können.According to a preferred embodiment, the one-piece housing component is open on the sides facing away from one another. This makes it possible to insert the motor parts from the open side into the motor housing part and the pump parts or the corresponding gear parts into the pump housing part, the open sides then being closed on the motor part by a cover and on the pump part by fitting the cylinder head of the pump can be.

Die nachfolgende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:

  • Fig. 1 eine Längsschnitt-Ansicht durch eine Elektropumpeneinheit mit einem einstückigen Gehäusebauteil;
  • Fig. 2 eine Längsschnitt-Ansicht eines einstückigen Gehäusebauteils mit wendelförmigem Strömungsweg für die Kühlflüssigkeit und
  • Fig. 3 eine Ansicht ähnlich Fig. 2 mit einem ringkammerförmigen Strömungsweg für die Kühlflüssigkeit.
The following description of preferred embodiments of the invention serves in conjunction with the drawing for a more detailed explanation. Show it:
  • Figure 1 is a longitudinal sectional view through an electric pump unit with a one-piece housing component.
  • Fig. 2 is a longitudinal sectional view of a one-piece housing component with a helical flow path for the coolant and
  • Fig. 3 is a view similar to Fig. 2 with an annular chamber flow path for the cooling liquid.

Die in Fig. 1 dargestellte Motorpumpeneinheit 1 umfasst ein zylindrisches Motorgehäuse 2, an dessen Außenseite radial nach außen abstehende Kühlrippen 3 angeordnet sind. Auf einer Seite ist das Motorgehäuse 2 offen und mittels eines Deckels 4 verschlossen, der in einer zentralen Öffnung 5 ein Kugellager 6 für die Lagerung einer Motorwelle 7 trägt, die in einem zweiten Kugellager 8 in einer Abschlußwand 9 des Motorgehäuses 2 ein zweites Mal gelagert ist. Die Motorwelle 7 trägt einen Rotor 11, der mit einer im Innern des Motorgehäuses 2 angeordneten Statorwicklung 10 in der bekannten Weise zusammenwirkt. Auf der mit dem Deckel 4 verschlossenen Seite ragt die Motorwelle 7 aus dem Gehäuse heraus und trägt ein Lüfterrad 12, welches im Betrieb Kühlluft über die Außenfläche des Motorgehäuses 2 und an den Kühlrippen 3 entlang strömen lässt.The motor pump unit 1 shown in FIG. 1 comprises a cylindrical motor housing 2, on the outside of which radially outwardly projecting cooling fins 3 are arranged. The motor housing 2 is open on one side and closed by a cover 4, which carries a ball bearing 6 in a central opening 5 for the mounting of a motor shaft 7, which is mounted in a second ball bearing 8 in a closing wall 9 of the motor housing 2 a second time . The motor shaft 7 carries a rotor 11 which interacts with a stator winding 10 arranged in the interior of the motor housing 2 in the known manner. On the side closed with the cover 4, the motor shaft 7 protrudes from the housing and carries a fan wheel 12, which in operation allows cooling air to flow over the outer surface of the motor housing 2 and along the cooling fins 3.

Im Bereich der Abschlußwand 9 ist an das Motorgehäuse 2 ein Pumpengehäuse 13 mit geringerem Außendurchmesser angeformt, so daß ein aus Pumpengehäuse 13 und Motorgehäuse 2 gebildetes einstückiges Bauteil 14 gebildet wird. Das Pumpengehäuse 13 ist auf der der Abschlußwand 9 gegenüberliegenden Seite offen, im Bereich der Abschlußwand 9 ist es durch eine an der Motorwelle 7 anliegende Dichtung 15 gegenüber dem Innenraum des Motorgehäuses 2 abgedichtet.In the region of the end wall 9, a pump housing 13 with a smaller outer diameter is molded onto the motor housing 2, so that a one-piece component 14 formed from the pump housing 13 and the motor housing 2 is formed. The pump housing 13 is open on the side opposite the end wall 9, in the region of the end wall 9 it is sealed off from the interior of the motor housing 2 by a seal 15 resting on the motor shaft 7.

Das in das Pumpengehäuse 13 hineinragende Ende der Motorwelle 7 trägt eine Taumelscheibe 16, die in Kolben 17 einer in der Zeichnung nur teilweise dargestellten Hochdruckpumpe anliegt und dadurch bei Drehung die Kolben parallel zu deren Längsachse oszillierend verschiebt. Die Kolben sind dabei in einem in der Zeichnung nur teilweise dargestellten Zylinderkopf 18 gelagert, der abgedichtet an das offene Ende des Pumpengehäuses 13 angesetzt ist, so daß die Kolben 17 teilweise in das Pumpengehäuse 13 hineinragen.The end of the motor shaft 7 protruding into the pump housing 13 carries a swash plate 16 which rests in the piston 17 of a high-pressure pump which is only partially shown in the drawing and thereby moves the pistons oscillating parallel to their longitudinal axis when they rotate. The pistons are mounted in a cylinder head 18, only partially shown in the drawing, which is sealed against the open end of the pump housing 13, so that the pistons 17 partially protrude into the pump housing 13.

Das einstückig ausgebildete Bauteil 14 ist vorzugsweise ein Aluminiumdruckgußteil. Da dieses Bauteil auf beiden Seiten offen ist, können von beiden Seiten her bei der Montage die entsprechenden Teile in einfacher Weise eingesetzt werden, wobei eine aufwendige Verbindung eines separaten Pumpengehäuses mit einem separaten Motorgehäuse aufgrund der einstückigen Ausbildung entfallen kann.The one-piece component 14 is preferably an aluminum die-cast part. Since this component is open on both sides, the corresponding parts can be used in a simple manner from both sides during assembly, a complex connection of a separate pump housing to a separate motor housing being eliminated due to the one-piece design.

An das Pumpengehäuse 13 ist weiterhin eine nach außen hin und zum Innenraum des Motorgehäuses 2 hin offene Kammer 19 angeformt, die zur Aufnahme von Elektroinstallationsmaterial für den Elektromotor dient. Dadurch, daß auch diese Kammer 19 einstückig mit dem Bauteil 14 ausgebildet ist, ergibt sich ein besonders kompakter Aufbau, da auch in diesem Bereich separate Verbindungsmittel entfallen können.A pump 19, which is open to the outside and to the interior of the motor housing 2, is also formed on the pump housing 13 and is used to hold electrical installation material for the electric motor. The fact that this chamber 19 is also formed in one piece with the component 14 results in a particularly compact construction, since separate connecting means can also be omitted in this area.

Während das Ausführungsbeispiel der Fig. 1 im Bereich des Motorgehäuses 2 mit Kühlrippen 3 versehen ist, ist bei dem in Fig. 2 dargestellten, Motorgehäuse und Pumpengehäuse umfassenden Bauteil 14 in die Wand des Motorgehäuses 2 ein wendelförmiger Strömungsweg 20 für eine Kühlflüssigkeit eingebettet, so daß eine Kühlflüssigkeit den den Elektromotor aufnehmenden Inndenraum umströmt und diesen dadurch kühlt. Als Kühlflüssigkeit wird vorzugsweise die von der Pumpe geförderte Reinigungsflüssigkeit verwendet.While the exemplary embodiment in FIG. 1 is provided with cooling fins 3 in the area of the motor housing 2, a helical flow path 20 for a cooling liquid is embedded in the component 14, which comprises the motor housing and the pump housing, in the wall of the motor housing 2, so that a cooling liquid flows around the inner space receiving the electric motor and thereby cools it. The cleaning liquid delivered by the pump is preferably used as the cooling liquid.

Bei dem in Fig. 3 dargestellten Ausführungsbeispiel eines Bauteils 14 ist ein Strömungsweg 20 in Form einer den Innenraum des Motorgehäuses 2 umgebenden Ringkammer vorgesehen, im übrigen sind die Bauteile 14 (Fg. 2 und 3) mit Ausnahme der Kühlrippen 3 gleich aufgebaut wie das entsprechende Bauteil 14 in Fig. 1.In the embodiment of a component 14 shown in FIG. 3, a flow path 20 is provided in the form of an annular chamber surrounding the interior of the motor housing 2, otherwise the components 14 (FIGS. 2 and 3) are constructed the same as the corresponding one, with the exception of the cooling fins 3 Component 14 in FIG. 1.

Claims (9)

1. Motor pump unit of a high-pressure cleansing apparatus, comprising an electromotor arranged in a motor housing, the shaft of said motor protruding into a pump housing where it drives the piston or pistons of a high-pressure pump via a gear unit, said motor housing (2) and said pump housing (13) being designed as a one-piece component (14), characterized in that in the region of said pump housing (13) a chamber (19) accommodating the electrical installation of said motor is formed onto said one-piece housing component (14), said chamber being open outwardly and towards the interior space of said motor housing (2).
2. Motor pump unit as defined in claim 1, characterized in that said one-piece housing component (14) is an aluminum casting.
3. Motor pump unit as defined in either of the preceding claims, characterized in that flow paths (20) for a coolant are let into said motor housing (2), said flow paths encircling said interior space.
4. Motor pump unit as defined in claim 3, characterized in that said flow path (20) helically encircles said interior space.
5. Motor pump unit as defined in claim 3, characterized in that said flow path (20) is designed as an annular chamber encircling said interior space.
6. Motor pump unit as defined in any of the preceding claims, characterized in that said one-piece housing component (14) has an end plate (9) at the transition of said motor housing (2) into said pump housing (13), said end plate accommodating a bearing (8) for said motor shaft (7).
7. Motor pump unit as defined in claim 6, characterized in that said motor shaft (7) penetrates said end plate (9) in a sealed manner.
8. Motor pump unit as defined in any of the preceding claims, characterized in that the external diameter of said pump housing (13) is smaller than the external diameter of said motor housing (2).
9. Motor pump unit as defined in any of the preceding claims, characterized in that said one-piece housing component (14) is open on the sides remote from one another.
EP87103279A 1986-04-17 1987-03-07 Motor pump unit for a high-pressure cleansing apparatus Expired - Lifetime EP0242550B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87103279T ATE56505T1 (en) 1986-04-17 1987-03-07 MOTOR PUMP UNIT FOR A HIGH PRESSURE CLEANING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3612936 1986-04-17
DE19863612936 DE3612936A1 (en) 1986-04-17 1986-04-17 ENGINE PUMP UNIT FOR A HIGH PRESSURE CLEANING DEVICE

Publications (3)

Publication Number Publication Date
EP0242550A2 EP0242550A2 (en) 1987-10-28
EP0242550A3 EP0242550A3 (en) 1988-06-22
EP0242550B1 true EP0242550B1 (en) 1990-09-12

Family

ID=6298880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103279A Expired - Lifetime EP0242550B1 (en) 1986-04-17 1987-03-07 Motor pump unit for a high-pressure cleansing apparatus

Country Status (3)

Country Link
EP (1) EP0242550B1 (en)
AT (1) ATE56505T1 (en)
DE (2) DE3612936A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2021175334A1 (en) * 2020-03-03 2021-09-10 上海亿力电器有限公司 High-pressure cleaning machine motor pump unit suitable for internal meshing deceleration transmission

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EP0324868A1 (en) * 1988-01-19 1989-07-26 Alfred Kärcher GmbH & Co. Piston pump for a high pressure cleaning apparatus
DK715088A (en) * 1988-12-21 1990-06-22 Westergaard Knud E Ind As ENGINE PUMP UNIT FOR A HIGH PRESSURE CLEANER
DE3931814A1 (en) * 1989-09-23 1991-04-04 Black & Decker Inc MANUAL HIGH PRESSURE CLEANER
DE4106955A1 (en) * 1991-03-05 1992-09-10 Kaercher Gmbh & Co Alfred HIGH PRESSURE CLEANER
DE4403139A1 (en) * 1994-02-02 1995-08-03 Sachsenhydraulik Gmbh Submersed oil pump as heat producer
DE19522878A1 (en) * 1995-06-23 1997-01-02 Kaercher Gmbh & Co Alfred Motor pump unit for a high pressure cleaning device
IT1287936B1 (en) * 1996-07-03 1998-08-26 Lavorwash Srl AXIAL PISTON PUMP
DE29616143U1 (en) * 1996-09-18 1998-01-22 Suttner Gmbh & Co Kg, 33689 Bielefeld High-pressure cleaning device with a combustion drive motor
DE19737540A1 (en) 1997-08-28 1999-03-04 Schaeffler Waelzlager Ohg Swash drive of an axial piston machine
DE19738813B4 (en) * 1997-09-05 2004-05-27 Ina-Schaeffler Kg axial piston
DE102005023449A1 (en) 2005-05-20 2006-12-14 Schaeffler Kg Swash plate mechanism
DE102007034013A1 (en) * 2007-07-20 2009-01-29 Wacker Construction Equipment Ag Working machine for an internal vibrator
JP5687257B2 (en) * 2012-09-04 2015-03-18 川崎重工業株式会社 Fuel pump
DE102014221778A1 (en) * 2014-10-27 2016-04-28 Robert Bosch Gmbh transmission module
DE202015000639U1 (en) 2015-01-29 2016-02-01 Josef Kränzle GmbH & Co. KG Swash plate pump
CN106032794B (en) * 2016-07-29 2018-05-01 浙江大学 The high rotating speed swash plate rotary electric pump of integration
CN107269484A (en) * 2017-07-18 2017-10-20 中国航空工业集团公司西安飞行自动控制研究所 A kind of integrated type structure of plunger pump and motor

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US4529362A (en) * 1983-02-07 1985-07-16 Hitachi, Ltd. Servo pump for hydraulic systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021175334A1 (en) * 2020-03-03 2021-09-10 上海亿力电器有限公司 High-pressure cleaning machine motor pump unit suitable for internal meshing deceleration transmission

Also Published As

Publication number Publication date
EP0242550A2 (en) 1987-10-28
EP0242550A3 (en) 1988-06-22
DE3612936A1 (en) 1987-10-22
DE3764848D1 (en) 1990-10-18
ATE56505T1 (en) 1990-09-15

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