EP0468082A1 - Pistolet de pulvérisation pour le nettoyage à haute pression - Google Patents

Pistolet de pulvérisation pour le nettoyage à haute pression Download PDF

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Publication number
EP0468082A1
EP0468082A1 EP90114420A EP90114420A EP0468082A1 EP 0468082 A1 EP0468082 A1 EP 0468082A1 EP 90114420 A EP90114420 A EP 90114420A EP 90114420 A EP90114420 A EP 90114420A EP 0468082 A1 EP0468082 A1 EP 0468082A1
Authority
EP
European Patent Office
Prior art keywords
spray gun
pump
handle
gun according
integrated
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.)
Withdrawn
Application number
EP90114420A
Other languages
German (de)
English (en)
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 EP90114420A priority Critical patent/EP0468082A1/fr
Publication of EP0468082A1 publication Critical patent/EP0468082A1/fr
Withdrawn legal-status Critical Current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
    • B05B9/01—Spray pistols, discharge devices
    • 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
    • B05B9/0403—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 with pumps for liquids or other fluent material
    • 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
    • B05B9/0403—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 with pumps for liquids or other fluent material
    • B05B9/0426—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 with pumps for liquids or other fluent material with a pump attached to the spray gun or discharge device
    • 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 spray gun for high-pressure cleaning with an integrated pump, integrated pump drive and a handle.
  • a spray gun of the type mentioned is described in EP-A2 0312 862.
  • Such spray guns have a much larger radius of action and are easier to handle than those spray guns in which the pump and the pump drive are stationary or in a mobile supply housing and which are connected to a high-pressure hose for the cleaning liquid.
  • the integrated pump and the integrated pump drive increase the weight of the spray gun considerably.
  • Holding the spray gun with two handles is much more convenient than holding the spray gun with one hand and supporting it from below with the other hand if necessary.
  • a handle is anatomically designed and the hand therefore fits snugly against it, while it slides easily on a relatively smooth housing wall.
  • a chemical container is integrated in the spray gun according to the invention. If a spray gun has the ability to add chemicals to the cleaning liquid, it can be used more universally for cleaning work. Of course, the spray gun can also be connected to a stationary or mobile chemical container by means of a hose connection. However, such an arrangement requires an additional feed line, which worsens the handling and reduces the radius of action. Since the amount of chemicals that is added to the cleaning liquid is small, it is expedient to integrate the chemical container into the spray gun, because this avoids the disadvantages mentioned and the weight increase to be accepted is small. In addition, it can be achieved by a corresponding spatial adaptation of the chemical container to the spray gun that the spray gun does not lose any of its compactness even when the chemical container is installed.
  • At least one of the handles can be used for pressure / quantity regulation of the cleaning agent or for switching on chemicals by changing its orientation to the spray gun.
  • This configuration of the spray gun according to the invention allows the cleaning conditions to be changed in a controlled manner during a cleaning operation, although the spray gun is held with both hands. With this configuration it is thus achieved that the spray gun according to the invention becomes much easier to handle and more user-friendly.
  • the second handle is attached to the side of the spray gun and, in particular, is designed as a round rod that projects out of the spray pistol at right angles to the direction of the beam, the round rod being more advantageous, depending on whether the operator is right-handed or left-handed Way can be attached to the right or left side of the spray gun.
  • an electric motor with a rotating armature a linear motor or a compressed air motor is installed as the pump drive.
  • the electric motors with a rotating armature are robust and inexpensive and, measured by their spatial dimensions, are powerful. Such motors therefore favor a compact design of the spray gun according to the invention.
  • linear motors which, if they are designed as electromagnetic pumps, also take over the function of the pump.
  • Compressed air motors are attractive in that they can be made particularly lightweight and that they are safer than electric motors with regard to the pressurized cleaning fluid flowing through the spray gun, which is usually tap water.
  • a radial piston pump a centrifugal pump or a scoop tube pump is installed as the pump.
  • the radial piston pump in particular enables a particularly compact construction of the spray guns.
  • the pistons are arranged in opposite directions. Because this compensates for unbalance, the pump runs particularly smoothly.
  • At least one galvanic element for example an accumulator, is integrated in the spray gun according to the invention.
  • This configuration assumes that the drive can be operated with direct current.
  • the Galvanic element increases the weight of the spray gun, but this makes it independent of stationary or at least separate power sources. This also saves an additional supply line to the spray gun - one is inevitable for the cleaning liquid - so that the integrated galvanic element makes the spray gun easier to handle and increases its radius of action.
  • the additional weight of the galvanic Ele not accept or if AC or compressed air is required to operate the drive, the energy must be supplied via an additional supply line.
  • the disadvantages associated with this can be alleviated by leading the supply lines for the cleaning liquid and the drive energy so that they abut against one another to the spray gun.
  • the first handle is located at the rear end of the spray gun and the second handle is arranged beyond the vertical line of gravity of the spray gun as seen from the first.
  • the pump, the pump drive and optionally the chemical container and the galvanic element are integrated into the spray gun in such a way that their outer front is closed.
  • Such an outer front favors a compact design of the spray gun and facilitates its rational and space-saving packaging.
  • a spray gun 1 shown in FIG. 1 has a housing 2, in which in particular a pump, a pump drive and a gear unit connecting a drive and a pump are accommodated. These parts are discussed in more detail in the description of the exemplary embodiment shown in FIG. 2.
  • the housing 2 has a rectangular shape and, viewed from the side, the shape of a lying L, with one leg of the L pointing downward.
  • the top of the housing 2 runs horizontally and forms the upper end of the spray gun.
  • a chemical container 4 is inserted, which is designed so that it forms a cuboid together with the housing 2. From the front, d. H.
  • a jet pipe 6 which is fastened to the housing 2 by means of a screw connection 7 and which is bent obliquely downward in its front part, the front and the rear part forming an obtuse angle with one another form, and ends downstream in a nozzle 8, on which a brush wash attachment can be inserted if necessary.
  • the jet pipe 12 is arranged symmetrically to the plane of symmetry through said cuboid, which runs perpendicular to its upper side and parallel to the spraying or flow direction.
  • a handle 9 which projects horizontally from the rear of the housing 2.
  • the handle 9 has a Opening 10, the edge regions of which are parallel to the outer edges of the handle 9.
  • the rear part of the handle 9 is designed as a handle 11. It has a switch button 12 on its side adjacent to the opening 10 for switching the pump drive on and off.
  • the cuboid and the rectangular handle give the spray gun 1 a compact design, which makes the spray gun 1 easy to handle and simplifies its packaging.
  • a combination hose 16 which is fastened with a screw connection 19, opens into the underside of the handle 9.
  • the combination hose 16 consists of a hose 17, on the wall of which two hoses 18 are formed on the side, with a diameter that is relatively small compared to that of the hose 17.
  • Cleaning liquid e.g. Water
  • the hoses 18 drive energy from a - not shown - device to the spray gun.
  • the suction hose and the line can open directly into the combination hose 16 within the device.
  • the drive is a DC motor
  • the line can also end within the device in a rectifier or a charger for accumulators. In these alternatives, the drive energy is then taken from the direct current output of the rectifier or from batteries that are accommodated in the device.
  • the handle 13 is rotatable about its longitudinal axis. Its housing end is coupled to a pressure / quantity regulation for the cleaning fluid, which is set by turning the handle 13. Alternatively, the chemical suction from the chemical container 4 can be opened and blocked by turning the handle 13.
  • a function display 15 with a multiple (LCD) display.
  • the function display can be used, for example, to display the volume flow, the spray pressure and the supply pressure of the cleaning liquid and the battery voltage.
  • the embodiment of the spray gun according to the invention shown in FIG. 2 differs only slightly from that shown in FIG. 1.
  • the housing 2 of the spray gun 32 shown in FIG. 2 has the shape of an asymmetrical T when viewed from the side.
  • the handle-shaped handle 9 protrudes horizontally on the one hand from the crossbar of the T and on the other hand from its vertical bar, so that it does not have a completely rectangular shape has, and in its opening 10 protrudes a corner of the T-crossbar.
  • the chemical container 4 is mounted in a recess on the front of the housing 2.
  • the 2 also has an accumulator 31 which is detachably fastened in a recess between the underside of the handle 9 and the rear wall of the housing 2.
  • the housing 2, the chemical container 4, the handle 9 and the accumulator 31 form a rectangle when viewed from the side and - apart from the fact that the handle 9 is narrower than the other parts - spatially a cuboid.
  • the cuboid shape of the spray gun 32 is particularly compact.
  • the spray gun also has a closed outer front. The cuboid shape and the closed outer front enable the spray gun 32 to be packaged particularly efficiently and in a space-saving manner when the spray lance and handle 13 have been removed.
  • the spray gun 1 shown in FIG. 1 with an accumulator and then to provide a simple suction hose in the manner of the suction hose 29 instead of the combination hose 16.
  • the spray gun 32 shown in FIG. 2 can also be modified in such a way that the energy source is arranged outside the spray gun and the feed lines take place via a combination hose.
  • a pump drive 21 and a gear are arranged one above the other in the housing 2 22 and a pump 23.
  • the pump 23, which occupies the uppermost position, is coupled to the pump drive 21 via the gear 22.
  • the axes of rotation of the three units run perpendicular to the top of the housing 2.
  • the pump 23 is a radial piston pump with a plurality of pistons 24 (shown schematically in FIG. 2), which are arranged in opposite directions in order to compensate for imbalances and thus to keep them as quiet as possible Ensure running.
  • the pump 23 is connected via a pipe (not shown) through the housing 2 and the handle 9 to the suction hose 29 or the hose 17 in the combination hose 16. Downstream the pump is connected via a short pipe section 25 to a mixing chamber 26, which is followed downstream by a short pipe section 28 which opens into the jet pipe 6 and which has a larger diameter than the pipe section 25.
  • the mixing chamber contains an injector 27, by means of which a chemical can be sucked into the mixing chamber via a chemical suction hose 5 immersed in the chemical container 4 (see FIG. 1).
  • the pump 23 can also be designed as a centrifugal or scoop tube pump.
  • the pump drive 21 is an electric motor with a rotating armature. All common types of this type of motor, such as direct current, three-phase and alternating current motors, can be used.
  • the electric motor is supplied with current from the accumulator 31 or - if the motor cannot be operated with direct current - via an electrical line laid in at least one of the hoses 18.
  • the course of the electrical line in the handle 9 and / or in the housing 2 is not shown in FIG. 2.
  • a linear motor designed as an electromagnetic pump or a compressed air motor can also be provided as the pump drive.
  • the drive also acts as a pump. This makes it possible to make the spray gun particularly light and compact.
  • An air motor can be made particularly lightweight. It is also from Inter eat that - apart from the function display - when using a compressed air motor the spray gun does not need electricity.
  • the combination hose 16 is connected to the spray gun, one of the hoses 18 possibly being designed as a compressed air line.
  • the spray guns shown in FIGS. 1 and 2 are used for high-pressure cleaning.
  • First the spray gun is prepared for the planned cleaning operation. It is taken into account whether the cleaning should be carried out with or without the addition of chemicals. In the latter case, the chemical container can be dispensed with. This allows the weight of the spray gun to be reduced at least somewhat. If the motor can be operated with direct current, it must be considered whether the current comes from an accumulator 31 attached to the spray gun (independence from a stationary or mobile power source, greater weight) or via the combination hose 16 from a stationary or at least not at the spray gun attached power source (lower weight, restriction of mobility) is removed.
  • the combination hose 16 is to be preferred to all other possible ways of supplying energy from outside the spray gun.
  • the spray gun is equipped in accordance with the planned cleaning operations, it is connected to the cleaning fluid supply - usually a water pipe - and the connection to the compressed air generator or to the power supply - if it is located outside the spray gun - is established.
  • the operator holds the spray gun with both hands on the one hand on the handle 11 and on the other hand on the handle 13 and directs the jet pipe 6 to the surface to be cleaned.
  • the pump drive 21 and thus the pump 23 are switched on by actuating the switch button 12.
  • the pump 23 draws in cleaning liquid and transports the high-pressure cleaning liquid downstream through the pipe section 25, the mixing chamber 26, the pipe section 28 and the jet pipe 6, in order then to spray them onto the surface to be cleaned by means of the nozzle 8.
  • the operating data are read from the function display and - apart from the battery voltage - set to the desired values by turning the handle 13.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)
EP90114420A 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression Withdrawn EP0468082A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90114420A EP0468082A1 (fr) 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90114420A EP0468082A1 (fr) 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression

Publications (1)

Publication Number Publication Date
EP0468082A1 true EP0468082A1 (fr) 1992-01-29

Family

ID=8204273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114420A Withdrawn EP0468082A1 (fr) 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression

Country Status (1)

Country Link
EP (1) EP0468082A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281444A1 (fr) * 2001-06-29 2003-02-05 Alfred Kärcher GmbH & Co. Dispositif de distribution de liquide pour un appareil de nettoyage à haute pression
US7854398B2 (en) 2005-10-26 2010-12-21 Techtronic Outdoor Products Technology Limited Hand held pressure washer
US8425203B2 (en) 2008-04-25 2013-04-23 Techtronic Outdoor Products Technology Limited Portable pressure washer system
US8444068B2 (en) 2005-10-26 2013-05-21 Techtronic Outdoor Products Technology Limited Dual flow pressure washer
WO2013152975A1 (fr) * 2012-04-11 2013-10-17 Gotec Sa Pompe électromagnétique
CN110653087A (zh) * 2018-06-29 2020-01-07 苏州宝时得电动工具有限公司 清洗设备及其组件
EP3379081B1 (fr) 2015-11-20 2021-04-28 Positec Power Tools (Suzhou) Co., Ltd Machine de nettoyage haute-pression portative
DE102022121331A1 (de) 2022-08-23 2024-02-29 Alfred Kärcher SE & Co. KG Kreiselpumpe und handgeführtes reinigungsgerät

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058668A (en) * 1960-10-07 1962-10-16 Oren B Harmes Cleaning apparatus
US3118610A (en) * 1962-12-17 1964-01-21 L & A Products Inc Controls for pressure washers
FR2393511A7 (fr) * 1977-06-02 1978-12-29 Gerni As Lance destinee a etre raccordee sur un dispositif de nettoyage a l'eau sous haute pression
FR2473912A1 (fr) * 1980-01-17 1981-07-24 Kaercher Gmbh & Co Alfred Appareil de nettoyage au jet a haute pression
EP0195264A2 (fr) * 1985-03-22 1986-09-24 Robert Bosch Gmbh Machine-outil à main actionnée électriquement avec une partie de boîtier amovible
EP0214749A2 (fr) * 1985-08-09 1987-03-18 Jse Corporation Injecteur d'eau à très haute pression
US4792096A (en) * 1987-12-14 1988-12-20 Gregory T Jack Hose nozzle with high pressure pump
EP0312862A2 (fr) * 1987-10-17 1989-04-26 Vdb-Patent Ag Dispositif de nettoyage à haute pression
US4851724A (en) * 1988-08-08 1989-07-25 Power Flo Products Corp. Pressure washer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058668A (en) * 1960-10-07 1962-10-16 Oren B Harmes Cleaning apparatus
US3118610A (en) * 1962-12-17 1964-01-21 L & A Products Inc Controls for pressure washers
FR2393511A7 (fr) * 1977-06-02 1978-12-29 Gerni As Lance destinee a etre raccordee sur un dispositif de nettoyage a l'eau sous haute pression
FR2473912A1 (fr) * 1980-01-17 1981-07-24 Kaercher Gmbh & Co Alfred Appareil de nettoyage au jet a haute pression
EP0195264A2 (fr) * 1985-03-22 1986-09-24 Robert Bosch Gmbh Machine-outil à main actionnée électriquement avec une partie de boîtier amovible
EP0214749A2 (fr) * 1985-08-09 1987-03-18 Jse Corporation Injecteur d'eau à très haute pression
EP0312862A2 (fr) * 1987-10-17 1989-04-26 Vdb-Patent Ag Dispositif de nettoyage à haute pression
US4792096A (en) * 1987-12-14 1988-12-20 Gregory T Jack Hose nozzle with high pressure pump
US4851724A (en) * 1988-08-08 1989-07-25 Power Flo Products Corp. Pressure washer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1281444A1 (fr) * 2001-06-29 2003-02-05 Alfred Kärcher GmbH & Co. Dispositif de distribution de liquide pour un appareil de nettoyage à haute pression
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
US8425203B2 (en) 2008-04-25 2013-04-23 Techtronic Outdoor Products Technology Limited Portable pressure washer system
WO2013152975A1 (fr) * 2012-04-11 2013-10-17 Gotec Sa Pompe électromagnétique
EP3379081B1 (fr) 2015-11-20 2021-04-28 Positec Power Tools (Suzhou) Co., Ltd Machine de nettoyage haute-pression portative
USRE49589E1 (en) 2015-11-20 2023-07-25 Positec Power Tools (Suzhou) Co., Ltd Pump unit and handheld high pressure washer
CN110653087A (zh) * 2018-06-29 2020-01-07 苏州宝时得电动工具有限公司 清洗设备及其组件
DE102022121331A1 (de) 2022-08-23 2024-02-29 Alfred Kärcher SE & Co. KG Kreiselpumpe und handgeführtes reinigungsgerät

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