EP3898016A1 - Hochdruckreinigungsgerät - Google Patents
HochdruckreinigungsgerätInfo
- Publication number
- EP3898016A1 EP3898016A1 EP18826049.1A EP18826049A EP3898016A1 EP 3898016 A1 EP3898016 A1 EP 3898016A1 EP 18826049 A EP18826049 A EP 18826049A EP 3898016 A1 EP3898016 A1 EP 3898016A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning device
- pressure cleaning
- support plate
- motor
- motor shaft
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 67
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- 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
- 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
- F04B1/128—Driving means
-
- 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
-
- 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 an Axialkolbenpum pe, which has at least one linearly movable piston, and with an electric motor, which has a motor shaft and a transmission, a
- Output shaft and a swash plate is coupled to the axial piston pump.
- Such a high-pressure cleaning device is known from DE 10 2007 006 284 A1. It has an axial piston pump, with the help of which a cleaning liquid, preferably water, can be pressurized.
- the axial piston pump has several pistons that can be moved back and forth linearly with the aid of a swash plate.
- the swash plate is coupled to an electric motor via a planetary gear.
- the electric motor, the planetary gear, the swash plate and the axial piston pump are arranged one behind the other in a longitudinal direction of the high-pressure cleaning device.
- the known high-pressure cleaning device has a not inconsiderable length.
- the object of the present invention is to develop a high-pressure cleaning device of the type mentioned at the outset in such a way that it has a compact construction and is inexpensive to produce.
- This object is achieved according to the invention in a high-pressure cleaning device of the generic type in that the axial piston pump is arranged offset in the radial direction with respect to a longitudinal axis of the motor shaft, the linear movement of the at least one piston being aligned parallel to the longitudinal axis of the motor shaft and the motor shaft in combination with the gearbox and the output shaft a U-shaped
- the axial piston pump is arranged radially offset from the motor shaft and the linear movement of the at least one piston runs parallel to the motor shaft.
- the swash plate is connected to an output shaft, which is aligned parallel to the motor shaft, the motor shaft in combination with the transmission and the output shaft forming a U-shaped drive train.
- a first leg of the U-shaped drive train is formed by the motor shaft, and a second leg of the U-shaped drive train is formed by the output shaft, which is coupled to the motor shaft via the transmission. The motor shaft and the output shaft thus protrude from the transmission in the same direction.
- the motor shaft is preferably longer than the output shaft.
- the configuration according to the invention allows the length of the high-pressure cleaning device to be reduced and to give the high-pressure cleaning device a compact design.
- the pistons of the axial piston pump are driven by the swash plate in a reciprocating linear movement, the linear movement being aligned parallel to the motor shaft.
- the use of the axial piston pump and the swash plate also allows the manufacturing costs of the high-pressure cleaning device to be kept relatively low, since these components can be produced inexpensively in large quantities.
- the electric motor is preferably arranged in a horizontal position of use of the high-pressure cleaning device, in which the motor shaft is aligned horizontally, above the swash plate and the axial piston pump.
- the electric motor has a bearing plate on which the motor shaft is rotatably mounted, the bearing plate being held on a support part on which the output shaft is rotatably mounted.
- the swash plate is driven and, via this, the drive of the at least one piston of the axial piston pump takes place via the output shaft, which is coupled to the motor shaft via the transmission.
- the output shaft like a bearing plate of the electric motor, is held on a supporting part, which gives the high-pressure cleaning device a high level of mechanical stability.
- the support part consists at least partially, preferably fully, of metal, for example of an aluminum alloy.
- the support part has a support plate.
- the support plate enables a particularly compact configuration of the high-pressure cleaning device.
- the support plate is oriented vertically in a horizontal position of use of the high-pressure cleaning device.
- the bearing plate is held adjustably on the support plate.
- the adjustability of the end shield enables the end shield to be adjusted when the high-pressure cleaning device is installed.
- the bearing plate is held on the support plate so as to be adjustable in the vertical direction.
- the bearing plate is preferably screwed to the support plate. It is advantageous if the support plate has elongated holes, which are penetrated by connecting screws ben. By loosening the connecting screws, the end shield and the entire electric motor of the high-pressure cleaning supply device can be adjusted relative to the support plate.
- the elongated holes in a horizontal position of use of the high-pressure cleaning device extend in the vertical direction.
- the support member has a one-piece with the support plate connected housing part which surrounds the swash plate in the circumferential direction.
- the one-piece connection of the support plate with the housing part gives the support part a particularly high mechanical strength.
- the housing part can, for example, be designed in the form of a cylinder jacket, the cylinder axis of which is preferably aligned parallel to the motor shaft.
- the housing part which surrounds the swash plate in the circumferential direction, advantageously protrudes from the side of the support plate facing the axial piston pump.
- the electric motor preferably has a motor housing with at least one air inlet opening, through which cooling air can flow into the motor housing, and at least one air outlet opening, through which the cooling air can flow out of the motor housing, the cooling air being able to be fed via the air outlet opening to the housing part surrounding the swash plate .
- the cooling air can first flow through the motor housing to cool the electric motor and can then flow around the housing part, which surrounds so that this housing part can be cooled by the cooling air.
- the cooling air can preferably be deflected within the motor housing, in particular by 90 ° in particular.
- the supporting part has a bearing sleeve connected in one piece to the supporting plate, on which the output shaft is rotatably mounted. It is advantageous here if the bearing sleeve is surrounded by the housing part which also surrounds the swash plate in the circumferential direction.
- a particularly high rigidity of the support part is achieved in an advantageous embodiment of the invention in that the support part has a reinforcing element connected in one piece to the support plate.
- the reinforcing element can for example be designed in the form of a reinforcing rib.
- the reinforcing element has an annular wall which projects from the side of the support plate facing away from the electric motor and the axial piston pump and is integrally connected to the support plate.
- the ring wall can be designed in the manner of a collar, which protrudes from the support plate and this gives a very high rigidity.
- the ring wall protrudes perpendicularly from the support plate.
- the ring wall surrounds a gear space in the circumferential direction, in which the gear is arranged.
- the high-pressure cleaning device preferably has a gear cover which is held on the ring wall.
- the gear cover in combination with the ring wall and the support plate, defines the gear space that receives the gear.
- a soundproofing element for example an insulating mat, is preferably arranged on the inside of the cover facing the gearbox.
- the supporting part has connecting elements for connecting the supporting part to an outer housing of the high-pressure cleaning device.
- the connecting elements can, for example, be configured as recesses, into which support pins arranged on the outer housing of the high-pressure cleaning device are immersed.
- the gear of the high-pressure cleaning device according to the invention can be designed in the form of a spur gear in example.
- the transmission of the high-pressure cleaning device is designed as a medium transmission train, for example in the form of a chain drive.
- the transmission is designed as a belt drive.
- a first pulley can be non-rotatably connected to the motor shaft and a second pulley can be non-rotatably connected to the output shaft, and a belt, preferably a toothed belt, can wrap around the two pulleys.
- FIG. 1 shows a side view of a high-pressure cleaning device, wherein a first housing shell of an outer housing of the high-pressure cleaning device is hidden;
- Figure 2 is a schematic side view of a motor pump unit of the
- Figure 3 a view of the motor pump unit in the direction of arrow A.
- Figure 4 is a sectional view of the motor pump unit along the line 4-4 in
- the high-pressure cleaning device is designated overall by the reference numeral 10 and has an outer housing 12 with a first housing shell 14 and a second housing shell, not shown in the drawing for a better overview, which is hidden in FIG. 1.
- the outer housing 12 surrounds a motor pump unit 16 and has two support feet 18, 20 with which the high-pressure cleaning device 10 can be parked on a standing surface 22 in a horizontal position of use shown in the drawing.
- the motor pump unit 16 has an electric motor 24 which drives an axial piston pump 30 via a gear designed in the embodiment shown as a belt drive 26 and a swash plate 28.
- the axial piston pump 30 has a liquid inlet 32 and a liquid outlet 34.
- a liquid supply line preferably a supply hose, can be connected to the liquid inlet 32.
- the axial piston pump 30 can be supplied with pressurized cleaning liquid, preferably water.
- a liquid outlet line, preferably a pressure hose, can be connected to the liquid outlet 34.
- the cleaning liquid pressurized by the axial piston pump 30 can be dispensed via the liquid outlet line. This allows the pressurized cleaning liquid to be directed towards an object to be cleaned.
- the axial piston pump 30 has a total of three identically designed pistons, only a first piston 36 and a second piston 38 being shown in FIG. 4 for a better overview.
- Such axial piston pumps are known per se to the person skilled in the art and therefore do not require a detailed description in the present case.
- the pistons 36, 38 are each driven by the swash plate 28 to a reciprocating linear movement, under the action of which liquid can be sucked in from the liquid inlet 32, pressurized and then discharged via the liquid outlet 34.
- the axial piston pump 30 comprises pump chambers known per se, in each of which a piston 36, 38 is immersed, as well as suitable inlet and outlet valves via which the liquid is supplied to the pumping chambers and discharged from the pumping chambers.
- the linear movement of the pistons 36, 38 is illustrated in FIG. 4 by the double arrow 40 and runs parallel to the longitudinal axis 42 of a motor shaft 44 of the electric motor 24, which is arranged above the axial piston pump 30 and the swash plate 28. Relative to the longitudinal axis 42, the axial piston pump 30 is arranged radially offset from the motor shaft 44.
- the motor shaft 44 is rotatably mounted on a bearing plate 46 and a further bearing part 48.
- a first end section 50 of the motor shaft 44 protrudes on the side of the further bearing part 48 facing away from the bearing plate 46 and is connected to a fan wheel 52 in a rotationally fixed manner.
- a second end portion 54 of the motor shaft 44 projects on the other Bearing part 48 facing away from the end plate 46 out of the end plate 46 and is non-rotatably connected to a first pulley 56 of the belt drive 26.
- a second pulley 58 of the belt drive 26 is rotatably connected to an output shaft 60, the longitudinal axis 62 of which is aligned parallel to the longitudinal axis 42 of the motor shaft 44.
- the output shaft 60 is rotatably connected to the swash plate 28.
- a belt 64 wraps around the first pulley 56 and the second pulley 58, so that the movement of the motor shaft 44 is transmitted via the first pulley 56, the belt 64 and the second pulley 58 to the output shaft 60 and from there to the swash plate 28, on which the output shaft 60 facing th face 66, the pistons 36, 38 of the axial piston pump 30 rest resiliently, so that they are driven by the swash plate 28 to the already mentioned reciprocating linear movement.
- the motor shaft 44 in combination with the belt drive 26 and the output shaft 60 forms a U-shaped drive train, via which the electric motor 24 is connected to the swash plate 28, which the pistons 36 and 38 into one going back and forth
- the motor shaft 44 is longer than the output shaft 60 and forms a first leg of the U-shaped drive train.
- the output shaft 60 forms a second leg of the U-shaped drive train and is coupled to the motor shaft 44 via the belt drive.
- the determination of the electric motor 24 in such a way that the axial piston pump 30 is offset with respect to the longitudinal axis 42 in the radial direction to the motor shaft 22 and the linear movement of the pistons 36, 38 is aligned parallel to the longitudinal axis of the motor shaft 44 is carried out with the aid of a rigidly designed Support part 70, which consists of an aluminum alloy in the illustrated embodiment.
- the electric motor 24 is arranged in the exemplary embodiment shown above the axial piston pump 30 and the swash plate 28 when the high-pressure cleaning device occupies a horizontal position of use.
- the support member 70 has a support plate 72 which is aligned vertically in the horizontal position of use of the high-pressure cleaning device 10 shown in the drawing. This is particularly clear from FIGS.
- the end shield 46 of the electric motor 24 is held on the support plate 72 so as to be adjustable in the vertical direction.
- the support plate 72 forms a support flange 74, which has a central opening 76 and elongated holes 78, 80, 82, 84 arranged on both sides of the central opening 76, each of which is penetrated by a connecting screw 86, with the aid of which the bearing plate 46 is screwed to the support plate 72.
- the second end section 54 of the motor shaft 44 passes through the central opening 76 of the support flange 74 and carries the first pulley 56 already mentioned above.
- the support part 70 has a housing part 88 which forms a cylindrical housing shell 90 which surrounds the swash plate 28 in the circumferential direction and is integrally connected to the support plate 72.
- the support member 70 also has a bearing sleeve 92 on which the
- Output shaft 60 is rotatably mounted and which, like the swash plate 28, is surrounded by the housing shell 90.
- the bearing sleeve 92 is also integrally connected to the support plate 72.
- the support member 70 also has a reinforcing element 94 which is integrally connected to the support plate 72 and additionally reinforces its rigidity.
- the reinforcing element 94 is configured in the embodiment shown as an annular wall 96, which projects vertically in the manner of a collar from the back 98 of the support plate 72 facing away from the electric motor 24 and the axial piston pump 30.
- the annular wall 96 adjoins the support plate 72 in one piece.
- the support member 70 has a high mechanical strength, especially a high rigidity. This is achieved in particular by the support plate 72 in combination with the ring wall 96 and the housing part 88, the ring wall 96 and the housing part 88 as well as the bearing sleeve 92 being integrally connected to the support plate 72.
- the annular wall 96 surrounds a gear chamber 102 in which the belt drive 26 is arranged.
- the gear space is covered by a gear cover 104, which is detachably held on the ring wall 96.
- the gear cover 104 is hidden in FIG. 3.
- a sound insulation element 107 is arranged on the inside 105 of the transmission cover 104 facing the transmission space 102.
- the electric motor 24 has a motor housing 106 which, on its end plate 108 facing away from the support plate 72 and the end shield 46, has an air inlet opening 110 via which cooling air can be sucked into the motor housing 106 under the action of the fan wheel 52.
- the cooling air can then flow through the motor housing 106, the cooling air being deflected by 90 ° and leaving the motor housing 106 via an air outlet opening 112, the air outlet opening 112 being arranged directly above the housing 88, which is cooled by the cooling air.
- the support part 70 has a plurality of connecting elements in the form of recesses 114, into which the support pins of the outer housing 12 can be inserted.
- the high-pressure cleaning device 10 is distinguished by a very compact design and by relatively low manufacturing costs, it having a very high mechanical stability.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2018/086392 WO2020126014A1 (de) | 2018-12-20 | 2018-12-20 | Hochdruckreinigungsgerät |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3898016A1 true EP3898016A1 (de) | 2021-10-27 |
EP3898016B1 EP3898016B1 (de) | 2023-08-16 |
EP3898016C0 EP3898016C0 (de) | 2023-08-16 |
Family
ID=64870512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18826049.1A Active EP3898016B1 (de) | 2018-12-20 | 2018-12-20 | Hochdruckreinigungsgerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3898016B1 (de) |
JP (1) | JP7348286B2 (de) |
CN (1) | CN112867572A (de) |
WO (1) | WO2020126014A1 (de) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4106955A1 (de) * | 1991-03-05 | 1992-09-10 | Kaercher Gmbh & Co Alfred | Hochdruckreinigungsgeraet |
US5230471A (en) * | 1991-03-08 | 1993-07-27 | Shop-Vac Corporation | Pressure washer |
US5529460A (en) | 1993-07-28 | 1996-06-25 | Coleman Powermate, Inc. | Pressure washer with flow control switch |
CA2191967C (en) * | 1994-06-17 | 2000-03-21 | Josef Schneider | High-pressure cleaning appliance with safety insulation |
DE19607881C2 (de) * | 1996-03-01 | 2003-07-17 | Kaercher Gmbh & Co Kg Alfred | Pumpe für ein Hochdruckreinigungsgerät |
SE512070C2 (sv) * | 1998-03-18 | 2000-01-24 | Tetra Laval Holdings & Finance | Anordning för högtryckspumpning eller homogenisering av vätskor |
DE10300070A1 (de) * | 2002-11-15 | 2004-06-03 | Brueninghaus Hydromatik Gmbh | Axialkolbenmaschine, Rückzugplatte und Verfahren zum Herstellen einer Rückzugplatte |
US7153105B2 (en) * | 2003-04-24 | 2006-12-26 | Haldex Brake Corporation | Compressor with swash plate housing inlet port |
DE102007006284A1 (de) * | 2007-02-01 | 2008-08-07 | Alfred Kärcher Gmbh & Co. Kg | Motorpumpeneinheit für ein Hochdruckreinigungsgerät |
KR20130102069A (ko) * | 2010-09-15 | 2013-09-16 | 콘티넨탈 테베스 아게 운트 코. 오하게 | 자동차 브레이크 시스템용 브레이크 구동 유닛 및 자동차 브레이크 시스템의 브레이크 구동 유닛을 위한 진공을 제공하는 모터 펌프 유닛 |
CN102249070A (zh) * | 2011-05-02 | 2011-11-23 | 苏州工业园区高登威科技有限公司 | 可调节张紧的辊轴传动装置 |
CA2968937C (en) * | 2016-06-03 | 2019-09-17 | Fna Group, Inc. | Pump assembly with electric starter |
CN107294332A (zh) * | 2017-08-14 | 2017-10-24 | 江苏环球特种电机有限公司 | 一种风机泵类负载节能变极多速三相异步电动机 |
-
2018
- 2018-12-20 JP JP2021534988A patent/JP7348286B2/ja active Active
- 2018-12-20 EP EP18826049.1A patent/EP3898016B1/de active Active
- 2018-12-20 CN CN201880098750.3A patent/CN112867572A/zh active Pending
- 2018-12-20 WO PCT/EP2018/086392 patent/WO2020126014A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
CN112867572A (zh) | 2021-05-28 |
JP2022522324A (ja) | 2022-04-18 |
EP3898016B1 (de) | 2023-08-16 |
JP7348286B2 (ja) | 2023-09-20 |
EP3898016C0 (de) | 2023-08-16 |
WO2020126014A1 (de) | 2020-06-25 |
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