EP0464229B1 - Appareil portatif de nettoyage à haute pression - Google Patents

Appareil portatif de nettoyage à haute pression Download PDF

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Publication number
EP0464229B1
EP0464229B1 EP90111619A EP90111619A EP0464229B1 EP 0464229 B1 EP0464229 B1 EP 0464229B1 EP 90111619 A EP90111619 A EP 90111619A EP 90111619 A EP90111619 A EP 90111619A EP 0464229 B1 EP0464229 B1 EP 0464229B1
Authority
EP
European Patent Office
Prior art keywords
pump
motor
cleaning device
pressure cleaning
gear
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
EP90111619A
Other languages
German (de)
English (en)
Other versions
EP0464229A1 (fr
Inventor
Eberhard Veit
Wolfgang Nieuwkamp
Josef Schneider
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 DE9090111619T priority Critical patent/DE59000937D1/de
Priority to AT90111619T priority patent/ATE85906T1/de
Priority to EP90111619A priority patent/EP0464229B1/fr
Publication of EP0464229A1 publication Critical patent/EP0464229A1/fr
Application granted granted Critical
Publication of EP0464229B1 publication Critical patent/EP0464229B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B08B3/028—Spray guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • 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
    • B08B2203/0217—Use of a detergent in high pressure cleaners; arrangements for supplying the same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0223—Electric motor pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/027—Pump details

Definitions

  • the invention relates to a portable high-pressure cleaning device with a motor and a pump for a cleaning liquid driven by the motor via a gear.
  • High-pressure cleaning devices have so far largely been designed as stationary devices in which a motor-driven pump is arranged in a stationary housing. Cleaning fluid conveyed by the pump is fed under pressure via a hose to a hand-held spray gun and is dispensed there via a jet pipe.
  • This object is achieved according to the invention in a high-pressure cleaning device of the type described in the introduction in that there is a cyclo-transmission between the motor and the pump.
  • This gear is a very resilient reduction gear that has an extremely low overall height.
  • the use of this gearbox makes it possible to use electric motors with very high speeds, which are smaller than corresponding high-performance electric motors with a lower speed, which were previously used in conventional high-pressure cleaning devices without a reduction gearbox.
  • the efficiency of this transmission is particularly high, since sliding friction is avoided in it, and this transmission also shows a quiet, uniform and low-vibration operation.
  • the pump is a radial piston pump, which can be driven via an eccentric, and that the motor, gearbox and pump are arranged vertically one above the other. This arrangement is only possible through the use of the very flat cyclo gearbox, so that despite the stacking arrangement, a manageable device with a small height is created.
  • the pump has only one piston. This creates a pulsating jet of liquid. This is in contrast to the usual use of multi-piston pumps, which produce a uniform cleaning jet. Even in the case of stationary high-pressure cleaning devices that use only one piston, the pressure surges are compensated for by the high-pressure hose between the stationary device and the hand spray gun. In the case of portable devices, on the other hand, in which such a pressure peak compensation is not possible, the pressure surges generated by the one piston of the pump are transmitted directly to the liquid jet which is emitted, so that a pulsating cleaning liquid jet arises which, in conventional devices, was only achievable with considerable additional design effort .
  • the piston of the pump and / or the pump housing and / or the bearings of the motor, the transmission or the pump are made of plastic. This further reduces the weight of the high-pressure cleaning device, so that a device designed in this way is suitable for long-term manual operation.
  • the drawing shows a schematic longitudinal sectional view of a portable high-pressure cleaning device.
  • the portable high-pressure cleaning device 1 shown in the drawing has a housing 2 with a handle 3 and a water and power connection 4.
  • An electric motor 5 is arranged in the lower part of the housing, the motor shaft 6 of which projects vertically upward into a gear chamber 7.
  • the motor shaft 6 is mounted in the housing by means of suitable bearings 8, 9, which are located in the bottom 10 of the housing 2 or in a partition 11 between the lower housing part and the gear chamber 7.
  • Cyclo transmissions are known transmissions (DE-OS 30 06 787), the structure and function of which are not discussed in detail here. It is essential that these gears can be built very flat and can transmit large powers with little loss as a reduction gear with a high reduction ratio.
  • an eccentric 14 On the drive shaft of the cyclo transmission, which projects vertically upwards into the upper part of the housing, an eccentric 14 is placed, which drives a radial piston 15, which is displaceable parallel to the upper side of the housing, in a radial piston pump which is also only shown schematically in the drawing.
  • the radial piston pump is connected on the suction side to the water connection 4, on the pressure side it leads to a jet pipe 16 attached to the housing.
  • the radial piston pump is constructed in a manner known per se and is therefore not described in detail, in particular neither the valves nor the seals of the pump shown in the drawing.
  • the arrangement of the motor, the cyclo transmission and the radial piston pump can be done vertically one above the other, since all parts have a low overall height. This also applies to the motor, which can be a high-speed and therefore compact motor due to the high reduction ratio of the cyclo transmission.
  • the housing 2 is made of plastic, for example of a polycarbonate.
  • the piston of the pump, the cyclo-transmission and the bearings of the motor shaft as well as the bearings of the radial piston of the pump are preferably made of plastic, for example of polyamide, so that overall not only a small size can be achieved by this combination of features, but also one significant reduction in weight compared to conventional pump designs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Secondary Cells (AREA)

Claims (5)

  1. Appareil portatif de nettoyage à haute pression (1) comportant un moteur (5) et une pompe pour liquide de nettoyage entraînée par le moteur par l'intermédiaire d'un engrenage (12), caractérisé en ce qu'un engrenage cyclique (12) est prévu entre le moteur (5) et la pompe.
  2. Appareil de nettoyage (1) selon la revendication 1, caractérisé en ce que l'engrenage (12) est en matière plastique.
  3. Appareil de nettoyage (1) selon l'une des revendications précédentes, caractérisé en ce que la pompe est une pompe à pistons radiaux qui peut être entraînée par l'intermédiaire d'un excentrique (14), et en ce que le moteur (5), l'engrenage (12) et la pompe sont disposés verticalement les uns au-dessus des autres.
  4. Appareil de nettoyage (1) selon l'une des revendications précédentes, caractérisé en ce que la pompe ne comporte qu'un piston (15).
  5. Appareil de nettoyage selon l'une des revendications précédentes, caractérisé en ce que le piston (15) de la pompe et/ou le carter (2) de la pompe et/ou les paliers (8, 9) du moteur (5), de l'engrenage (12) ou de la pompe sont en matière plastique.
EP90111619A 1990-06-20 1990-06-20 Appareil portatif de nettoyage à haute pression Expired - Lifetime EP0464229B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE9090111619T DE59000937D1 (de) 1990-06-20 1990-06-20 Tragbares hochdruckreinigungsgeraet.
AT90111619T ATE85906T1 (de) 1990-06-20 1990-06-20 Tragbares hochdruckreinigungsgeraet.
EP90111619A EP0464229B1 (fr) 1990-06-20 1990-06-20 Appareil portatif de nettoyage à haute pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90111619A EP0464229B1 (fr) 1990-06-20 1990-06-20 Appareil portatif de nettoyage à haute pression

Publications (2)

Publication Number Publication Date
EP0464229A1 EP0464229A1 (fr) 1992-01-08
EP0464229B1 true EP0464229B1 (fr) 1993-02-24

Family

ID=8204115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111619A Expired - Lifetime EP0464229B1 (fr) 1990-06-20 1990-06-20 Appareil portatif de nettoyage à haute pression

Country Status (3)

Country Link
EP (1) EP0464229B1 (fr)
AT (1) ATE85906T1 (fr)
DE (1) DE59000937D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7854398B2 (en) 2005-10-26 2010-12-21 Techtronic Outdoor Products Technology Limited Hand held pressure washer
US8444068B2 (en) 2005-10-26 2013-05-21 Techtronic Outdoor Products Technology Limited Dual flow pressure washer

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50301675D1 (de) * 2003-05-15 2005-12-22 Grundfos As Dosierpumpe
US8425203B2 (en) 2008-04-25 2013-04-23 Techtronic Outdoor Products Technology Limited Portable pressure washer system
CN210218011U (zh) * 2015-11-20 2020-03-31 苏州宝时得电动工具有限公司 手持式高压清洗机
CN109861458B (zh) * 2019-02-19 2024-03-12 格力博(江苏)股份有限公司 高压泵
CN111692068B (zh) * 2019-03-13 2025-05-09 苏州宝时得电动工具有限公司 压力清洗机
US20230415205A1 (en) * 2022-06-24 2023-12-28 Honda Motor Co., Ltd. Motor disposed below pressure pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6287316A (ja) * 1985-10-15 1987-04-21 Toshiba Corp 変速装置用ギヤの製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001571C2 (de) * 1980-01-17 1982-10-28 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgerät
JPS6238257A (ja) * 1985-08-09 1987-02-19 R D Kosan Kk 超高圧水噴射装置
DE8713954U1 (de) * 1987-10-17 1987-12-03 Carl Platz Hochdrucktechnik GmbH, 6710 Frankenthal Hochdruckreinigungsgerät
FR2623588A1 (en) * 1987-11-23 1989-05-26 Equip Electr Moteur Epicycloid speed reduction set particularly for heat engine starters
US4792096A (en) * 1987-12-14 1988-12-20 Gregory T Jack Hose nozzle with high pressure pump
GB8803974D0 (en) * 1988-02-20 1988-03-23 Fletcher Sutcliffe Wild Ltd Hydraulic pump
US4851724A (en) * 1988-08-08 1989-07-25 Power Flo Products Corp. Pressure washer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6287316A (ja) * 1985-10-15 1987-04-21 Toshiba Corp 変速装置用ギヤの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7854398B2 (en) 2005-10-26 2010-12-21 Techtronic Outdoor Products Technology Limited Hand held pressure washer
US8444068B2 (en) 2005-10-26 2013-05-21 Techtronic Outdoor Products Technology Limited Dual flow pressure washer

Also Published As

Publication number Publication date
DE59000937D1 (de) 1993-04-01
ATE85906T1 (de) 1993-03-15
EP0464229A1 (fr) 1992-01-08

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