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EP0468081A1 - 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
EP0468081A1
EP0468081A1 EP90114419A EP90114419A EP0468081A1 EP 0468081 A1 EP0468081 A1 EP 0468081A1 EP 90114419 A EP90114419 A EP 90114419A EP 90114419 A EP90114419 A EP 90114419A EP 0468081 A1 EP0468081 A1 EP 0468081A1
Authority
EP
European Patent Office
Prior art keywords
spray gun
gun according
pump
drive
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.)
Granted
Application number
EP90114419A
Other languages
German (de)
English (en)
Other versions
EP0468081B1 (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 DE59007277T priority Critical patent/DE59007277D1/de
Priority to EP90114419A priority patent/EP0468081B1/fr
Priority to AT90114419T priority patent/ATE111783T1/de
Publication of EP0468081A1 publication Critical patent/EP0468081A1/fr
Application granted granted Critical
Publication of EP0468081B1 publication Critical patent/EP0468081B1/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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
    • 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
    • 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, handle and feed lines for the cleaning liquid and, if appropriate, for the drive energy.
  • a spray gun of the type mentioned is described in EP-A2 0312862.
  • the individual parts are accommodated in a common housing and are inseparably connected to one another. Because of this design, the known spray gun is only suitable for certain, defined applications.
  • the functional units of the spray gun according to the invention can be easily removed and installed without the other functional units being cumbersome or being affected.
  • the individual functional units can be produced in stock and a replacement of a functional unit by a differently designed or a defective functional unit by a similar but intact one can therefore be carried out very quickly and efficiently. Due to the favorable design of the spray gun according to the invention, it makes sense if the spray gun contains only those functional units that are required for a specific application. It can thereby be achieved that the spray gun according to the invention is always compact and relatively light.
  • the pump housing and the motor housing can be used Design so that the outer fronts of the housing are largely closed and in particular no parts to be moved are passed through the walls of the housing. This is - if electrically powered - favorable from a safety point of view, because then the cleaning fluid under pressure, such as water, is completely separated from the live parts.
  • the effectiveness of the spray gun according to the invention can be increased in an advantageous manner if a housing designed as a chemical container is integrated. Since cleaning chemicals are usually only added to the more mechanically active cleaning liquid in small amounts, the weight of the spray gun does not increase significantly as a result of the installation of the chemical container.
  • the housings are detachably connected to one another.
  • This configuration allows the replacement or replacement of functional units of the spray gun according to the invention to be considerably accelerated again.
  • a spray gun designed in this way it is easily possible with a spray gun designed in this way that even non-specialists carry out the replacement or replacement of the functional units.
  • the detachable connection is favorable because it makes sense to provide a separate chemical container for each chemical, which is connected to the spray gun when filled.
  • an electric motor with a rotating armature a linear motor or a compressed air motor is installed as the drive.
  • the electric motors with rotating armature are particularly robust and inexpensive, while the linear motors, which can be used as an electromagnetic pump, enable a particularly compact design because the motor already includes the pump.
  • Compressed air motors in spray guns with an integrated pump have the particular advantage that the side-by-side use of pressurized cleaning fluid and parts under electrical voltage, which is always somewhat problematic when using an electric drive, is not present.
  • air motors can be made of plastic and are then very light.
  • At least one galvanic element for example an accumulator
  • Accumulators increase the weight the spray gun, but in many cases it is beneficial not to be dependent on a stationary power source and to have the greatest possible freedom of movement.
  • a supply line is always required for high-pressure cleaning devices to supply the cleaning liquid.
  • a single supply line hardly impedes handling.
  • adjoining supply lines are designed in such a way that a first hose for the cleaning liquid is provided, on which at least one further hose for supplying the drive energy is directly molded.
  • the devices for adapting the power supply to the operating data of the - electrically operated - pump drive can advantageously be arranged in the merging point, or in its immediate vicinity.
  • a rectifier or an accumulator with charger can be provided as such a device.
  • An accumulator is inexpensive because on the one hand it makes the power supply independent of a stationary power source and on the other hand does not burden the spray gun with its weight, but when using an accumulator housed in a housing outside the spray gun, the freedom of movement is less than when using an in the spray gun integrated accumulator.
  • the spray gun is particularly lightweight if, apart from the parts which must have good electrical conductivity, it is made of plastic.
  • FIG. 1 shows a modular spray gun 1 for high-pressure cleaning.
  • the individual functional units are housed in separate housings that are detachably connected to each other.
  • the connecting elements are not shown in FIG. 1.
  • a motor serving as a pump drive and a gearbox with a pump are accommodated in two separate housings arranged one behind the other, the front, ie. H. the housing facing the surface to be cleaned is the pump housing 4.
  • the information on the geometry of the spray gun is based on the fact that the upper sides of the pump and motor housing run horizontally and form the upper end of the spray gun.
  • a handle 6 is attached to the underside of the motor housing 2 and a chemical container 12 to the underside of the pump housing 4.
  • a jet pipe 13 fastened by means of a screw connection 21 protrudes horizontally from the end wall of the pump housing 4 and is bent obliquely downward in its front part , wherein the front and the rear part enclose an obtuse angle, and which has at the end facing the surface to be cleaned a nozzle 14, on which, if necessary, a - not shown - brush attachment is inserted.
  • the motor and the pump housing 2 or 4 - if one disregards a recess and an extension, which will be discussed below - are trapezoidal.
  • the trapezoids complement each other in the connected state to form a rectangle, the adjoining walls of the two housings being inclined to the end wall of the pump housing 4 in such a way that the wall of the motor housing 2 overhangs.
  • the inclined wall of the motor housing 2 has a conical recess 3 and the inclined wall of the pump housing 4 has a conical extension 5, which is dimensioned and positioned according to the recess 3 so that the extension 5 engages in the recess 3 in the connected state.
  • the cone axes of the recess 3 and the extension 5 run perpendicular to the end wall of the pump housing 4.
  • the motor axis in the motor housing 2 is arranged coaxially with the cone axis of the recess 3.
  • the motor is an electric motor with a rotating armature, whereby all common types of this type of motor, such as direct current, three-phase and alternating current motors, can be used.
  • the motors can for example have a permanent magnet or with 42 volts AC or with 24 volts AC voltage can be operated in combination with a rectifier. Motors of very different powers can be used.
  • the torque transmission from the motor to the shaft of the transmission and thus to the pump in the pump housing 4 takes place via a magnetic coupling.
  • the magnetic coupling consists of a magnet which is connected to the rotor of the motor in a rotationally fixed manner, which rotates in the housing area surrounding the recess 3 and which communicates a torque to the transmission shaft extending into the extension 5.
  • the chemical container 12 is connected via a suction line (not shown) to the pump housing 4, in which the mixing of the chemical with the cleaning liquid takes place.
  • a separate container is provided for each chemical used, which is attached to the underside of the pump housing 4 if necessary.
  • one container contains a cleaning chemical and another contains a dewaxer. The metering rate is fixed for the individual chemicals.
  • the pump driven by the gear draws cleaning liquid, usually water, from a storage tank (not shown) and directly or indirectly the chemical from the chemical tank 12 and sprays the water / chemical mixture under pressure through the jet pipe 13 connected to the downstream end of the pump and through the nozzle 14 onto the surface to be cleaned.
  • cleaning liquid usually water
  • the handle 6 has the shape of a parallelogram, which has a continuous opening 8, also designed as a parallelogram, the edge regions of which are parallel to the outer edges of the handle 6. The longer diagonal of the parallelogram runs backwards / downwards.
  • the rear part of the handle is designed as a handle 10. It has on its side facing the opening 8 a switch button 9 for actuating a switch with which the motor is switched on and off.
  • a combination hose 18 shown in FIGS. 2 and 3 connects the pump housing 4 to a supply housing 15.
  • the combination hose 18 consists of a hose 19, on the outside of which two hoses 20 with a relatively small diameter compared to the hose 19 are directly molded. In the cross sections perpendicular to the axis of the hose 19, the hose center points are each on a straight line. Cleaning fluid is transported through the hose 19.
  • the power supply for the motor is laid in at least one of the hoses 20.
  • a power cable 16 and a suction hose 17 for the cleaning liquid open into the supply housing 15.
  • the power cable 16 and the water suction hose 18 can be brought together directly in the combination hose 18 within the supply housing 15.
  • the power cable 16 can end in a rectifier accommodated in the supply housing 15, from which the motor is supplied with direct current via lines laid in the hoses 20.
  • the supply housing contains 15 accumulators and a charger for them, the power cable feeding the charger and the motor in turn being supplied with current from the accumulators via lines laid in the tubes 20.
  • the combination hose 18 opens into the pump housing 4. The electricity is transported from there to the motor, for example, by means of plug connections which are fastened to the housings and are not shown in the figures.
  • the individual functional units can easily be exchanged for others, either because they are defective or because the exchange unit is more suitable for an intended application than the one previously installed.
  • the heaviest functional unit i. That is, it is advantageous to arrange the motor above the handle 6, which essentially determines the position of the center of gravity, because then the vertical line of gravity of the spray gun also runs close to the handle. This minimizes the torque exerted by the spray gun on the holding hand and thus a fatigue factor.
  • the pump, gear and motor can be accommodated in one housing, the gear and motor then being connected by means of a mechanical plug-in coupling.
  • a clutch is less expensive than a magnetic clutch.
  • the seal between the cleaning liquid, which is usually water, and the live parts is more difficult, which is important for safety reasons.
  • a compressed air motor or a linear motor designed as an electromotive pump is used as the motor.
  • a compressed air motor instead of the power cable 16, a compressed air line is led into the supply housing 15, which opens directly into one of the hoses 20.
  • the compressed air motor can also be used if a separate housing is provided for the motor.
  • a linear motor combines the functions of motor and pump and therefore contributes to weight reduction and enables a particularly compact design.
  • accumulators 11 for the power supply of the motor are in the handle 6, specifically in the front, opposite the handle lying part and parallel to it.
  • This alternative makes the handle 6 somewhat heavier, but on the other hand one saves the supply housing 15 and instead of the combination hose 18 only the suction hose 17 is required for the cleaning liquid.
  • a separate motor housing - the cleaning liquid and the power supply are spatially completely separated from one another in this configuration of the power supply.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)
EP90114419A 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression Expired - Lifetime EP0468081B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59007277T DE59007277D1 (de) 1990-07-27 1990-07-27 Spritzpistole für die Hochdruckreinigung.
EP90114419A EP0468081B1 (fr) 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression
AT90114419T ATE111783T1 (de) 1990-07-27 1990-07-27 Spritzpistole für die hochdruckreinigung.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90114419A EP0468081B1 (fr) 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression

Publications (2)

Publication Number Publication Date
EP0468081A1 true EP0468081A1 (fr) 1992-01-29
EP0468081B1 EP0468081B1 (fr) 1994-09-21

Family

ID=8204272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114419A Expired - Lifetime EP0468081B1 (fr) 1990-07-27 1990-07-27 Pistolet de pulvérisation pour le nettoyage à haute pression

Country Status (3)

Country Link
EP (1) EP0468081B1 (fr)
AT (1) ATE111783T1 (fr)
DE (1) DE59007277D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720383U1 (de) * 1997-11-19 1998-02-12 Elektra Beckum Ag, 49716 Meppen Hochdruckreinigungsgerät
WO2016097853A1 (fr) * 2014-12-19 2016-06-23 Daniele Marino Dispositif d'évacuation de liquide

Citations (8)

* 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
FR2325469A1 (fr) * 1975-09-25 1977-04-22 Kress Elektrik Gmbh & Co Dispositif de liaison d'un appareil de travail a un appareil d'entrainement a moteur
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
DE8716267U1 (de) * 1987-12-09 1988-02-11 Chung Yang Co., Ltd., Seoul Motorbetätigtes Mehrzweck-Werkzeug für Kraftfahrzeuge
DE3721415A1 (de) * 1987-06-29 1989-01-12 Hilti Ag Elektrowerkzeug
EP0312862A2 (fr) * 1987-10-17 1989-04-26 Vdb-Patent Ag Dispositif de nettoyage à haute pression

Patent Citations (8)

* 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
FR2325469A1 (fr) * 1975-09-25 1977-04-22 Kress Elektrik Gmbh & Co Dispositif de liaison d'un appareil de travail a un appareil d'entrainement a moteur
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
DE3721415A1 (de) * 1987-06-29 1989-01-12 Hilti Ag Elektrowerkzeug
EP0312862A2 (fr) * 1987-10-17 1989-04-26 Vdb-Patent Ag Dispositif de nettoyage à haute pression
DE8716267U1 (de) * 1987-12-09 1988-02-11 Chung Yang Co., Ltd., Seoul Motorbetätigtes Mehrzweck-Werkzeug für Kraftfahrzeuge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29720383U1 (de) * 1997-11-19 1998-02-12 Elektra Beckum Ag, 49716 Meppen Hochdruckreinigungsgerät
WO2016097853A1 (fr) * 2014-12-19 2016-06-23 Daniele Marino Dispositif d'évacuation de liquide
EP3233293A1 (fr) * 2014-12-19 2017-10-25 Daniele Marino Dispositif d'émission d'un liquide
EP3233293B1 (fr) * 2014-12-19 2021-06-30 Daniele Marino Dispositif d'émission d'un liquide

Also Published As

Publication number Publication date
EP0468081B1 (fr) 1994-09-21
ATE111783T1 (de) 1994-10-15
DE59007277D1 (de) 1994-10-27

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