EP3517010B1 - Reinigungseinheit - Google Patents

Reinigungseinheit Download PDF

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Publication number
EP3517010B1
EP3517010B1 EP19153411.4A EP19153411A EP3517010B1 EP 3517010 B1 EP3517010 B1 EP 3517010B1 EP 19153411 A EP19153411 A EP 19153411A EP 3517010 B1 EP3517010 B1 EP 3517010B1
Authority
EP
European Patent Office
Prior art keywords
motor housing
unit
cleaning unit
axis
motor
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.)
Active
Application number
EP19153411.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3517010A1 (de
Inventor
Josef Kränzle
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.)
Josef Kranzle & Co KG GmbH
Original Assignee
Josef Kranzle & Co KG GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=65228405&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3517010(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Josef Kranzle & Co KG GmbH filed Critical Josef Kranzle & Co KG GmbH
Priority to PL19153411T priority Critical patent/PL3517010T3/pl
Publication of EP3517010A1 publication Critical patent/EP3517010A1/de
Application granted granted Critical
Publication of EP3517010B1 publication Critical patent/EP3517010B1/de
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/009—Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles

Definitions

  • the invention relates to a cleaning unit, in particular a high-pressure cleaner.
  • Cleaning units in particular high-pressure cleaners, are known from the prior art. These are used to remove contamination from surfaces.
  • the cleaning units have a spray device or can be connected to such a device in order to spray the cleaning fluid.
  • the cleaning units are equipped with a pump unit.
  • the problem with the cleaning units known from the prior art, however, is that they require a large amount of space and a large number of components if they have wheels for moving or transporting them.
  • the DE 196 35 337 C1 relates to a mobile high-pressure cleaner with a motor and a pump which are surrounded by a housing.
  • the US 2010/0242220 A1 Figure 12 shows a cleaning device comprising a control mechanism for controlling the cleaning device and a substantially spherical bottom engaging roller assembly having a fluid inlet for receiving a flow of fluid.
  • the invention comprises a cleaning unit, a delivery unit and at least one support wheel, the delivery unit having a motor and a pump unit, the motor comprising a motor housing, the at least one support wheel being supported on the motor, in particular on the motor housing, and the support wheel being rotatable a rotation axis is mounted.
  • the cleaning unit is used to remove contamination from surfaces.
  • the cleaning unit is preferably a high-pressure cleaner.
  • the cleaning unit expediently weighs between 10 to 30 kg so that it can be easily transported.
  • the delivery unit of the cleaning unit is used to deliver a cleaning fluid, the delivery unit in principle being able to provide a working pressure of preferably 140 to 200 bar and / or a delivery rate of the cleaning fluid of 8 to 15 l / min.
  • the delivery unit according to the invention has at least one motor and a pump unit, the motor being designed to provide a torque and / or a force and / or a translational and / or rotary movement which is used in the pump unit to supply the cleaning fluid promote and / or pressurize.
  • the motor is preferably designed as an electric motor which can be operated with alternating current and / or direct current, whereby the power consumption of the motor should expediently be a maximum of 7.5 kW, preferably a maximum of 3.5 kW, so that the cleaning unit can expediently be connected to common household energy sources , e.g. sockets, can be connected.
  • the motor has a motor shaft which is connected to a shaft of the pump unit.
  • the shaft of the motor is made in one piece with the shaft of the pump in order to achieve a cleaning unit that is particularly low-maintenance and has a long service life.
  • the pump unit is designed in particular as an axial piston pump, a radial piston pump, or a series piston pump.
  • the delivery unit, in particular the pump unit expediently has a connection or an inlet for the supply with cleaning fluid and via a drain or an outlet connection to which a spray unit can be connected directly or indirectly.
  • a spray unit can include, for example, a cleaning lance and / or a cleaning gun and a cleaning hose.
  • the motor housing surrounds the motor at least in some areas in order to protect it from external influences and / or to prevent or at least make it more difficult to intervene in the moving components of the motor.
  • the motor housing can also be designed to support the motor on other components of the cleaning unit, such as on a support unit or on support feet.
  • the motor housing is advantageously a separate component from the support unit and / or the parts of the cleaning unit which form the support feet. In other words, this can mean that the motor housing is not formed by parts of the support unit and / or by the parts of the cleaning unit which form the support feet or the support foot.
  • the motor and the motor housing form a separate and / or independent assembly.
  • the motor housing and the motor are designed in such a way that the motor and the motor housing can only be assembled together and / or are designed to be / be assembled together.
  • the motor housing is preferably designed in such a way that it supports and / or supports a rotating part, in particular a shaft or a bearing, of the motor, in particular directly.
  • the purpose of the support wheel of the cleaning unit is to ensure that the cleaning unit can be at least partially supported with respect to the floor via the support wheel.
  • the support wheel can also serve to facilitate a displacement of the cleaning unit on or relative to the floor.
  • the support wheel is mounted in such a way that it can be rotated about an axis of rotation and is directly or indirectly supported on the motor.
  • the support wheel is therefore not supported on a support frame, a support unit or on a support leg.
  • the center point of the outer diameter of the support wheel is preferably located on the axis of rotation.
  • the support wheel is mounted such that it can only be rotated about an axis of rotation relative to the motor.
  • the support wheel can be preferred also be designed in such a way that it is mounted so that it can be rotated about two axes of rotation relative to the motor, so that handling of the cleaning unit is simplified.
  • it can be formed at least in some areas, preferably completely, from a metallic material such as steel or stainless steel and / or from plastic.
  • the cleaning unit expediently comprises at least two support wheels which are supported on the motor, in particular on the motor housing.
  • At least two support wheels are rotatably mounted about the same axis of rotation.
  • the cleaning unit can be tilted about the axis of rotation in a space-saving manner, so that it can be displaced or displaced by the user in a simple manner. In this way, the ease of use of the cleaning unit in particular can be increased.
  • the or at least one axis of rotation is preferably essentially perpendicular to a direction of longitudinal extent of the motor.
  • the longitudinal direction of the motor is the direction in which the length of the motor is determined.
  • the direction of longitudinal extent can also be formed by that direction in which the motor shaft of the motor extends and / or around which the shaft of the motor rotates.
  • “essentially perpendicular” is to be understood as meaning that the angle is in a range from 75 ° to 90 °, preferably in a range from 82 ° to 90 °, and particularly preferably in a range from 85 ° to 90 ° can.
  • the distance of the axis of rotation in the direction of the longitudinal extension direction from the pump unit is advantageously greater than the distance between the center of gravity and the pump unit, in particular in the longitudinal extension direction. In this way, a particularly stable cleaning unit can be achieved, since the weight-related torque about the axis of rotation is structurally predetermined.
  • the distance between the axis of rotation and the pump unit in the direction of the longitudinal extension direction is in particular the smallest possible distance between the axis of rotation and the pump unit. This distance is expediently determined in a section plane, the normal of which is parallel to the axis of rotation and the center of gravity must lie in this section plane.
  • the main focus here is the focus of the motor or, alternatively, the focus of the entire conveyor unit.
  • the relevant distance between the center of gravity and the pumping unit is measured in the same way as the distance between the axis of rotation and the pumping unit.
  • the ratio of the distance of the axis of rotation in the direction of the longitudinal extension direction to the pump unit to the distance between the center of gravity and the pump unit in the longitudinal extension direction is advantageously in a range from 0.2 to 0.95, preferably in a range from 0.3 to 0.7 and particularly preferably in a range from 0.45 to 0.65. With a ratio which is in the range from 0.2 to 0.95, it can be achieved that a cleaning unit that is particularly space-saving results.
  • the ratio should be in a range from 0.45 to 0.65.
  • the conveyor unit in particular the motor, is preferably connected to a support unit in a rotationally fixed and / or immovable manner, in particular around and / or along an axis parallel to the axis of rotation.
  • the support unit can be a separate assembly or, alternatively, the support unit can also be designed in one piece with the conveyor unit.
  • the support unit serves to additionally support the cleaning unit with respect to the floor.
  • the support unit has, preferably at least one, particularly preferably at least two, separate support surfaces. The support surface or surfaces are designed to be able to come into contact with the ground, in particular directly, in a supporting manner.
  • the support surfaces can be surfaces which serve to support the cleaning unit relative to the floor.
  • the support unit preferably has two support legs which extend on both sides of the conveyor unit, so that the support unit is able to support a rotation of the cleaning unit, in particular about the direction of longitudinal extent.
  • the support legs expediently each have at least one support surface.
  • the support unit can in particular be made in one piece, so that a high mechanical load-bearing capacity of the support unit can be achieved.
  • the support unit can also be designed in several parts, in particular in order to be able to counteract vibrations - for example during operation - through the contact damping that occurs or to reduce the effects.
  • the carrying unit expediently has an engagement section, the engagement section, in particular a handle, serving to enable the cleaning unit, among other things, to be easily displaced or displaced by the user.
  • the distance between the engagement section in the direction of the longitudinal extension direction and the pump unit is preferably greater than the distance between the center of gravity and the pump unit in the longitudinal extension direction.
  • the minimum distance between the engagement section and the pump unit or from the center of gravity to the pump unit is again decisive. This makes it easier to tilt the cleaning unit, in particular about an axis parallel to the axis of rotation, so that simple operation or displacement of the cleaning unit can be achieved.
  • the support unit is preferably fixed on the delivery unit, in particular on the motor and / or the pump unit. Fixing the support unit on the conveyor unit results in a cleaning unit that is particularly space-saving.
  • the support unit can be fixed with the aid of assembly means such as bolts, screws or rivets, it being particularly preferred if the support unit makes direct contact with the delivery unit, in particular the motor and / or the pump unit, at least in some areas. In order to achieve a high level of stability, it can be useful if the attachment of the support unit to the conveyor unit is located in the longitudinal direction on the other side of the center of gravity than the axis of rotation of at least one support wheel, but in particular all support wheels.
  • At least two support wheels are advantageously arranged on opposite sides of the motor, in particular in the direction of the axis of rotation. This arrangement enables particularly good support against rotation, in particular about the direction of longitudinal extent, to be achieved.
  • the two support wheels are preferably at the same distance from the center of gravity in order to achieve a mass distribution that is as uniform as possible.
  • the motor housing preferably comprises a primary motor housing and a secondary motor housing, the primary motor housing being at least partially surrounded by the secondary motor housing, in particular in the circumferential direction around the longitudinal extension direction.
  • the primary motor housing can be optimized to be able to emit as high a heat flow as possible into the environment and the secondary motor housing can, for example, be designed to protect the user from a high heat flow in order to avoid burns or scalds to the user, for example.
  • the primary and the secondary motor housing are preferably made predominantly of different materials in order to fulfill the tasks placed on the primary and / or the secondary motor housing as reliably as possible.
  • the primary motor housing can be predominantly, in particular completely, made of metallic materials such as steel, stainless steel, Aluminum and / or copper and the secondary motor housing for the most part, in particular completely, made of plastics, in particular thermoplastics and / or thermosets.
  • the secondary motor housing expediently has openings through which mass transport, in particular of the surrounding fluid, is enabled so that the components of the delivery unit, in particular the motor and / or the pump unit, can be effectively cooled by the surrounding fluid.
  • the material of the primary motor housing expediently has a higher coefficient of thermal conductivity than the material of the secondary motor housing. In this way, the user can be protected against scalds or burns in a particularly effective manner.
  • the material of the primary motor housing advantageously has a higher electrical conductivity than the material of the secondary motor housing. This measure makes it possible for the user to be protected against electric shock from the secondary motor housing.
  • the motor housing in particular the primary motor housing, preferably has cooling ribs.
  • the pump unit can also preferably have cooling fins.
  • cooling fins By using cooling fins, the heat transport can be increased in an effective way.
  • the cooling ribs expediently extend in the longitudinal direction.
  • the heat conduction can be improved along the longitudinal extension direction through the cooling fins, so that a particularly high heat flow can be achieved in the surrounding fluid, since the temperature of the cooling fins is particularly homogeneous in the longitudinal extension direction.
  • this type of arrangement of the cooling fins can also achieve a swirling of the surrounding fluid (for example the air), whereby the heat dissipation is additionally positively influenced.
  • the axle or the support wheel is supported on a cooling rib of the motor.
  • the axis can be designed in one piece with the corresponding cooling rib, so that it is particularly resilient.
  • the support wheel is preferably mounted rotatably about an axis, the axis being arranged directly and / or indirectly on the motor housing, in particular on the primary and / or on the secondary motor housing.
  • the axle By using the axle, a particularly secure support of the support wheel with respect to the motor housing can be achieved.
  • the axis is expediently arranged in a rotationally and / or stationary manner on or relative to the motor housing. This can be achieved, among other things, by designing the axis in one piece with the motor housing.
  • the axle can preferably also represent a separate component which is joined or attached to the motor housing in a material, form-fitting and / or force-fitting manner.
  • the axis can also be mounted indirectly on the motor housing; this can be achieved, for example, by using an intermediate structure, such as a substructure and / or a top structure.
  • the axis is supported on the intermediate structure or connected to it and the intermediate structure is in turn supported on the motor housing.
  • the intermediate structure is expediently designed in a U-shape or has U-shaped elements so that it can at least partially enclose the motor housing and thus secure storage can be achieved.
  • the axle can also be designed in one piece with the intermediate structure in order to achieve a connection that is particularly mechanically resilient.
  • the use of an intermediate structure is particularly useful if the engine weighs more than 50 kg.
  • the axle is or has been produced by a forming process, in particular as an extruded part.
  • the axis is supported directly or indirectly exclusively on the motor housing. This means that the axle can only transmit forces to the support wheel and to the motor housing (possibly indirectly via the intermediate structure), in particular the primary motor housing and / or the secondary motor housing. In this way, a particularly mechanically loadable support of the support wheel can be achieved.
  • the ratio of the length of the axis is to Outside diameter of the support wheel to be mounted in a range from 0.1 to 0.4, preferably in a range from 0.2 to 0.3.
  • a ratio of 0.1 to 0.4 it can be achieved that when the support wheel is loaded during a displacement - due to the slight mechanical deformation of the axis - a particularly safe feeling is created for the user.
  • a ratio in the range from 0.2 to 0.3 a cleaning unit that is particularly space-saving can be achieved.
  • the length of the axis is determined in particular from the motor housing to the opposite distal end of the axis.
  • the axis expediently extends in the direction of the axis of rotation. This results in a particularly compact connection of the support wheel and, in addition, the occurrence (or its probability) of complex three-dimensional stress states can be reduced, so that material can be saved.
  • the axle is preferably made of a different material than the primary and / or the secondary motor housing. This means that the two components can be optimally adapted to the tasks to be performed by them. In order to avoid corrosion, it is particularly preferred if the material, at least in part, of one or all of the axles, consists of a more noble material than the motor housing, in particular than the primary and / or secondary motor housing.
  • the axle expediently does not penetrate the support wheel completely, so that the support wheel has a closed top surface which is opposite the motor and which is not pierced by the axle. In this way, the risk of injury to the user can be greatly reduced, since the possibility of engaging in the gap between the support wheel and the axle is prevented or minimized by the cover surface, so that the risk of crushing, for example, is reduced.
  • the axis preferably has a circular outer surface in the direction of the axis of rotation, at least in some areas, preferably for the most part, the center of which lies on the axis of rotation. This facilitates a relative rotation of the support wheel about the axis, so that the user can move the cleaning unit more easily.
  • the diameter of the axle is expediently in a ratio to the outer diameter of the supported support wheel in a range from 0.05 to 0.5, preferably in a range from 0.1 to 0.4 and particularly preferably in a range from 0.15 to 0 , 3.
  • the relevant diameter of the axle is in particular the diameter of the part of the axle which is used to support the support wheel with respect to the axle. Alternatively, the diameter is preferably measured as the mean diameter of the axle. Regardless of the type of determination, the relevant diameter is always the outer diameter of the axis.
  • the outer diameter of the supported support wheel can in particular be the maximum diameter of the surfaces which can be brought into contact with the ground in a supporting manner.
  • these supporting surfaces of the support wheel form an outer cylinder jacket surface of the support wheel, the outside diameter being precisely the diameter of this cylinder jacket surface.
  • a ratio of the diameter of the axle to the outer diameter of the supported support wheel in a range from 0.05 to 0.5, a particularly compact cleaning unit can be achieved.
  • a ratio in the range from 0.1 to 0.4 it can be achieved that a particularly mechanically loadable connection results.
  • With a ratio in the range from 0.15 to 0.3 a particularly cost-effective cleaning unit is achieved, since the machining of the axis can take place on machines that are used particularly frequently.
  • the axis expediently extends in the direction of the axis of rotation. This can facilitate the displaceability or the displaceability of the cleaning unit.
  • the axis can preferably not be changed in its extension and / or position relative to the motor. In other words, this can mean that the axis is arranged rigidly with respect to the motor. This type of arrangement enables the axis to be connected to the motor with a particularly high mechanical load.
  • the axle is particularly preferably rigidly connected to the motor housing, in particular the primary and / or the secondary motor housing.
  • the axle can be designed as a solid body so that it is not hollow on the inside.
  • the axis is expediently at least partially, preferably completely, made of aluminum, stainless steel, brass, bronze, a fiber composite material and / or titanium.
  • the axle is preferably made of a more noble material than the motor housing, in particular the primary and / or the secondary motor housing. In this way it can be achieved that at least some areas of the motor housing can serve as a sacrificial anode for the axle, so that the corrosion of the axle is prevented or hindered or delayed.
  • axle which is designed to be used in a cleaning unit, which has been described above, for mounting the support wheel.
  • the axle can have features of the previously described axle or axles.
  • Another aspect not according to the invention relates to a motor housing which is designed to be used in a cleaning unit as described above.
  • the motor housing can have features of the motor housing described above.
  • a cleaning unit 1 which has a delivery unit 10, which in turn comprises a motor 12 with a motor housing 14 and a pump unit 20.
  • the pump unit 20 has connections for supplying the pump unit 20 with cleaning fluid (inflow) and for supplying a spray unit (outflow) with cleaning fluid.
  • the pump unit 20 can convey the cleaning fluid from the inflow to the outflow.
  • the motor housing 14 has a primary motor housing 16 which has cooling fins 19.
  • the cleaning unit 1 which is in particular a high-pressure cleaner, the same has a carrying unit 34 which has an engagement section 36 on one distal end of the support leg 35 and a support surface 38 on the opposite distal end of the support leg 35
  • the cleaning unit 1 has at least one support wheel 31, the support wheel 31 having a closed top surface 32.
  • FIG. 2 a detailed view of a cleaning unit 1 according to the invention is shown, the front support wheel 31 not being shown.
  • the motor 12 extends mainly in the longitudinal direction L, the center of gravity S of the delivery unit 10 being at a distance Ls from the pump unit 20 in the longitudinal direction L.
  • the axis 40 which is used to mount the support wheel 31 (not shown), extends in the direction of the axis of rotation A.
  • the axis of rotation A is at a distance L A from the pump unit 20 in the direction of the longitudinal direction L.
  • the axis 40 penetrates the secondary motor housing 18.
  • the secondary motor housing 18 surrounds the primary motor housing 16 at least in some areas in a circumferential direction around the longitudinal direction L.
  • the support unit 34 has an engagement section 36 which is designed as a handle.
  • the engagement section 36 connects the two support legs 35 of the support unit 34 to one another.
  • the two support legs 35 are connected to the motor 12 in such a way that this connection is rotationally rigid about the axis of rotation A or an axis running parallel to the axis of rotation A.
  • the motor 12 has a secondary motor housing 18 on which the two support wheels 31 are supported.
  • the two support wheels 31 are supported on the secondary motor housing 18 in such a way that they can rotate about the axis of rotation A.
  • the support wheels 31 and the support legs 35 are each arranged on both sides of the motor 12 in the direction of the axis of rotation A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP19153411.4A 2018-01-26 2019-01-24 Reinigungseinheit Active EP3517010B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19153411T PL3517010T3 (pl) 2018-01-26 2019-01-24 Jednostka czyszcząca

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018101803.7A DE102018101803A1 (de) 2018-01-26 2018-01-26 Reinigungseinheit

Publications (2)

Publication Number Publication Date
EP3517010A1 EP3517010A1 (de) 2019-07-31
EP3517010B1 true EP3517010B1 (de) 2021-06-09

Family

ID=65228405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19153411.4A Active EP3517010B1 (de) 2018-01-26 2019-01-24 Reinigungseinheit

Country Status (6)

Country Link
EP (1) EP3517010B1 (pl)
DE (1) DE102018101803A1 (pl)
DK (1) DK3517010T3 (pl)
ES (1) ES2885185T3 (pl)
PL (1) PL3517010T3 (pl)
PT (1) PT3517010T (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022103546A1 (de) * 2022-02-15 2023-08-17 Alfred Kärcher SE & Co. KG Hochdruckreinigungsgerät

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635337C1 (de) 1996-08-31 1998-02-26 Kaercher Gmbh & Co Alfred Fahrbares Hochdruckreinigungsgerät
DE102004051968A1 (de) 2004-10-25 2006-04-27 Alfred Kärcher Gmbh & Co. Kg Hochdruckreinigungsgerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070207042A1 (en) * 2006-03-03 2007-09-06 Hahn Klaus K Engine shroud
GB2469055B (en) * 2009-03-31 2013-01-02 Dyson Technology Ltd A cleaning appliance with spherical floor engaging arrangement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635337C1 (de) 1996-08-31 1998-02-26 Kaercher Gmbh & Co Alfred Fahrbares Hochdruckreinigungsgerät
DE102004051968A1 (de) 2004-10-25 2006-04-27 Alfred Kärcher Gmbh & Co. Kg Hochdruckreinigungsgerät

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KÄRCHER: "Für jeden Bedarf die richtige Lösung. Kärcher Programm 1993/94", 1 June 1993 (1993-06-01), pages 1 - 4, XP055901494
KÄRCHER: "Reinigung ist unsere Sache. Kärcher Programm '90", 1 January 1990 (1990-01-01), pages 1 - 5, XP055901491

Also Published As

Publication number Publication date
DK3517010T3 (da) 2021-09-13
PL3517010T3 (pl) 2021-12-27
ES2885185T3 (es) 2021-12-13
DE102018101803A1 (de) 2019-08-01
PT3517010T (pt) 2021-08-30
EP3517010A1 (de) 2019-07-31

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