EP1852190B1 - Foam device - Google Patents

Foam device Download PDF

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Publication number
EP1852190B1
EP1852190B1 EP07009007A EP07009007A EP1852190B1 EP 1852190 B1 EP1852190 B1 EP 1852190B1 EP 07009007 A EP07009007 A EP 07009007A EP 07009007 A EP07009007 A EP 07009007A EP 1852190 B1 EP1852190 B1 EP 1852190B1
Authority
EP
European Patent Office
Prior art keywords
foam
foam device
valve device
chemical
rotary handle
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.)
Not-in-force
Application number
EP07009007A
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German (de)
French (fr)
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EP1852190A3 (en
EP1852190A2 (en
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Suttner GmbH
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Suttner GmbH
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Publication date
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Publication of EP1852190A2 publication Critical patent/EP1852190A2/en
Publication of EP1852190A3 publication Critical patent/EP1852190A3/en
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Publication of EP1852190B1 publication Critical patent/EP1852190B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/005Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30Injector mixers
    • B01F25/31Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30Injector mixers
    • B01F25/31Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a gate valve, a sliding valve or a cock
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/244Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle
    • B05B7/2443Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle the carried liquid and the main stream of carrying liquid being brought together downstream of the container before discharge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • B08B3/026Cleaning by making use of hand-held spray guns; Fluid preparations therefor

Definitions

  • the present invention relates to a foam device for a high pressure gun according to claim 1.
  • High-pressure cleaning devices also known as high-pressure cleaners, are commonly used for cleaning purposes.
  • water or another cleaning fluid is discharged via a nozzle under high pressure and possibly at high temperature.
  • a foaming device can be connected for foaming up water and an admixed chemical, in particular for the production and dispensing of a cleaning foam.
  • the addition of the chemical is then preferably via a valve device, such as a needle valve, controllable.
  • the WO 02/362673 A1 relates to a fluid mixer which mixes a miscible first fluid at relatively dilute concentrations with a second fluid, the second fluid being under pressure.
  • the first fluid may be a cleaning fluid.
  • the fluid under pressure creates a suction pressure through a venturi to meter cleaning fluid into the pressurized fluid.
  • a handle or rotatable outlet tube is provided for controlling the valve means.
  • a spray head intended for attachment to a container, the container containing a chemical which is diluted by a carrier stream.
  • the head has a connection for the carrier flow.
  • a valve device is movable to control the metered addition of the chemical to the carrier stream.
  • the US 2006/013062 A1 relates to a foam device which can be used in the production of lightweight concrete. Water and a foaming agent are made into foam by a body filled with balls.
  • GB-A-1 576 155 A discloses a device or container for foaming liquids and for dispensing the foam.
  • the container has a porous body through which the liquid is pressed while squeezing the container.
  • the liquid is mixed with the air in the tank in a mixing chamber to form foam which is passed through another porous body.
  • the present invention has for its object to provide a foam device and a high-pressure gun for a high-pressure cleaner with such a foam device, so that a simple handling and in particular a defined chemical admixing and / or an effective foaming are possible.
  • valve device has a rotary handle surrounding the foam output and arranged coaxially therewith for controlling the valve device and that the foam device according to the invention is designed as a foam nozzle or attachment nozzle for a high-pressure gun or the like.
  • foam device can also be used for other purposes, in particular also for fire-fighting purposes or the like.
  • the foam device has a valve device, so that the chemical admixture is only one stage or adjustable. This allows a very simple and targeted handling and defined chemical admixture.
  • the foaming device is designed to form or form a container for the chemical to be admixed.
  • the foam device then forms in particular a structural unit with the container and is accordingly easy to handle.
  • the foaming device preferably comprises a foam screen of an open-cell foam material, in particular of a metal foam. This allows a very effective foaming.
  • the foam can be dispensed as a flat jet and the jet plane is rotatable. This in turn allows a very simple handling and in particular optimal adjustment or adjustment of the foam device.
  • Fig. 1 shows a schematic view of a proposed foam device 1, which is connected in the illustrated example of a high-pressure cleaning device 2 in the aforementioned sense.
  • the foaming device 1 is directly or indirectly connected to a high-pressure gun 3 or the like, which in turn can be connected to the high-pressure cleaning device 2 via a high-pressure hose 4.
  • the foam device 1 can not only be used in the field of high-pressure cleaning, but can generally be used for other purposes, for example also for fire-extinguishing purposes or the like.
  • the preferred embodiment of the foam device 1 will be explained primarily and with reference to the field of high-pressure cleaning.
  • the foaming device 1 is used to foam a mixture of water and a mixed chemical. This mixture is foamed under preferably high pressure with the supply of air and in particular sprayed.
  • the foam device 1 is designed in particular for fastening or receiving a container 5 for the chemical or forms this.
  • the container 5 is detachably connected to the foam device 1, in particular screwed.
  • the container 5 extends in particular transversely to the discharge direction A of the foam device 1.
  • the container 5 is directly connectable to a housing of the foam device 1.
  • the foam device 1 is designed in particular as a foam nozzle or gun.
  • the foam device 1 with a connection device, in particular a screw 6 o.
  • a connection device for connection to a supply device, in particular to an output of the high-pressure gun 3, provided.
  • the foam device 1 is designed here as a front nozzle. If necessary, the foam device 1 against a conventional spray lance o. The like, interchangeable or connectable to this.
  • Fig. 1 shows the high-pressure gun 3 with the proposed foam device I, which is preferably directly connected thereto, in particular screwed is.
  • Fig. 2 shows the foam device 1 in a schematic longitudinal section.
  • the foaming device 1 preferably has a valve device 7 for controlling the admixture of the chemical.
  • the valve device 7 is preferably designed such that the chemical admixture is only one step on or adjustable. Particularly preferably, the chemical admixing can also be completely switched off. In this case, the foaming device 1 can be rinsed with water and, in particular, can also be used only to dispense pure water or another cleaning liquid, for example as a conventional dispensing or high-pressure nozzle. In this case, preferably no foaming takes place. If necessary, the air supply, which is otherwise required for foaming, can then be blocked by the valve device 7.
  • the valve device 7 has a rotary handle 8 surrounding the foam output and / or the foam device 1 and / or arranged coaxially therewith for controlling the valve device 7 or chemical admixing. This allows a simple, intuitive operation.
  • the valve device 7 preferably has a particular bolt-shaped adjusting element 9, which is preferably provided with different cross-sectional passage openings, in particular holes 10, for the gradual adjustment of the chemical admixing.
  • the adjusting element 9 is adjustable or displaceable by means of the rotary handle 8, particularly preferably in the axial direction or parallel to the dispensing direction A of the foam device 1.
  • one of the bores 10 forms a fluidic connection between the container 5 and an intake channel 11 an injector or foam generator 12 of the foam device 1 ago.
  • the adjusting element 9 is adjustable in such a way that the chemical admixing or supply can also be blocked. This position is in Fig. 2 shown.
  • a helical slotted guide 13 For adjusting the adjusting element 9, in particular geared coupling with the rotary handle 8, in particular a helical slotted guide 13 is provided.
  • the chemical admixture or the valve device 7 or the rotary handle 8 is only adjustable in stages or latching.
  • the semi-transparent, schematic plan view according to Fig. 3 illustrates in particular the preferred helical slotted guide 13th
  • Fig. 2 It can be seen that the container 5 not shown to scale, in particular fastened via a screw 16 to the foam device 1, in particular in this is screwed.
  • the foaming device 1 preferably has a dip or suction tube 17 which extends into the container 5 in order to be able to suck the chemical, not shown, out of the container 5.
  • the dip tube 17 may optionally be rigid or rigid or flexible, in particular tubular, be formed.
  • the connecting device 6 is supplied under high pressure water or other liquid.
  • the water is first at least partially expanded in the foam device 1 or in the foam generator 12 in a first stage via a Venturi nozzle 18 or the like, so that the laterally adjacent channel 11, the chemical in the desired manner - depending on the position of the valve device or actuator 9 - can be sucked and mixed with the water.
  • the mixture of water and chemical is further expanded, in particular air is supplied via draft openings 19 and passed through a subsequent nozzle arrangement 20, in which the foaming takes place in the desired manner.
  • an expansion or AufMumraum 21 connects.
  • the foamed mixture or the foam produced is dispensed via an optional dispensing nozzle 22, which preferably generates a flat and / or conical jet by appropriate design, in particular an outlet opening 23.
  • the dispensing nozzle 22 is preferably rotatable to rotate the jet plane. If necessary, the rotation of the dispensing nozzle 23 is limited to 90 °, for example.
  • the valve device 7 may be formed for additional control of the supply of sucked or generated foaming air.
  • the valve device 7 or the rotary handle 8 for this purpose a non-illustrated sleeve o. The like. Control that covers the Zu povertyöfnonne 19 more or less depending on need or position or closes.
  • the foaming device 1 comprises a foam sieve 24, as in FIG Fig. 2 indicated, for better foaming of the chemical-water-air mixture.
  • the foam screen 24 is preferably arranged upstream of the discharge nozzle 22 and / or installed in the expansion or AufMumraum 21.
  • the foam screen 24 may be formed, for example, by a perforated plate, a sieve, pressed steel wool, a coiled plastic sieve or the like. Accordingly, it is then a disc-shaped or, for example, cylindrical arrangement.
  • the foam screen 24 is made of an open-pore foam material, in particular a metal foam, or consists exclusively thereof.
  • the metal foam is made of stainless steel.
  • the foam ratio of the metal foam or other foam material is preferably 1 to 5 to 1 to 10, especially about 1 to 8, mass or volume of metal to air.
  • the foam device 1, in particular its valve device 7, can be cleaned without tools, removed and / or dismantled.
  • the proposed foam device 1 is very simple and robust, so that they can withstand the harsh everyday stresses very well. Furthermore, the foam device 1 allows a very simple operation and a universal use. Particularly noteworthy here is the simple adjustment or adjustment of the chemical addition to the needs-based adjustment and / or the optional switch to pure water output or shutdown of the foaming.
  • the foaming device 1 is basically not only the foaming of a mixture of water and a mixed chemical, but also for other mixtures with comparable properties, in particular for other, in particular water-like behaving liquids used. Accordingly, the term "water” extends in particular to other water-like liquids.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Foam generator (1) for foaming water is designed for attachment or insertion of a container (5) for a chemical to be added to the water, or forms such a container. An independent claim is also included for a high-pressure pistol (3) for a high-pressure cleaning device (2) comprising a foam generator as above.

Description

Die vorliegende Erfindung betrifft eine Schaumeinrichtung für eine Hochdruckpistole gemäß Anspruch 1.The present invention relates to a foam device for a high pressure gun according to claim 1.

Hochdruckreinigungsvorrichtungen, auch kurz Hochdruckreiniger genannt, werden üblicherweise für Reinigungszwecke eingesetzt. Über eine Düse wird üblicherweise Wasser oder eine sonstige Reinigungsflüssigkeit unter hohem Druck und ggf. mit hoher Temperatur ausgegeben. Weiter kann eine Schaumeinrichtung zum Aufschäumen von Wasser und einer zugemischten Chemikalie, insbesondere zur Erzeugung und Ausgabe eines Reinigungsschaums, angeschlossen werden. Die Zumischung der Chemikalie ist dann vorzugsweise über eine Ventileinrichtung, wie ein Nadelventil, steuerbar.High-pressure cleaning devices, also known as high-pressure cleaners, are commonly used for cleaning purposes. Usually, water or another cleaning fluid is discharged via a nozzle under high pressure and possibly at high temperature. Furthermore, a foaming device can be connected for foaming up water and an admixed chemical, in particular for the production and dispensing of a cleaning foam. The addition of the chemical is then preferably via a valve device, such as a needle valve, controllable.

Wichtig ist, daß dem Wasser eine definierte Chemikalienmenge und Luftmenge zugeführt wird. Die Zumischung der Chemikalienzugabe ist beispielsweise mit einem Nadelventil nicht definiert einstellbar.It is important that the water a defined amount of chemicals and air flow is supplied. The admixture of the chemical addition is not defined defined with a needle valve, for example.

Die WO 02/362673 A1 betrifft einen Fluidmischer, der ein mischbares erstes Fluid in relativ verdünnten Konzentrationen mit einem zweiten Fluid mischt, wobei das zweite Fluid unter Druck steht. Das erste Fluid kann eine Reinigungsflüssigkeit sein. Das Fluid unter Druck erzeugt durch eine Venturidüse einen Saugdruck, um Reinigungsflüssigkeit dem druckbeaufschlagten Fluids zuzudosieren. Ein Griff bzw. drehbares Auslaßrohr ist zur Steuerung der Ventileinrichtung vorgesehen.The WO 02/362673 A1 relates to a fluid mixer which mixes a miscible first fluid at relatively dilute concentrations with a second fluid, the second fluid being under pressure. The first fluid may be a cleaning fluid. The fluid under pressure creates a suction pressure through a venturi to meter cleaning fluid into the pressurized fluid. A handle or rotatable outlet tube is provided for controlling the valve means.

In der US 2002/008161 A1 wird ein Spritzkopf offenbart, der zur Befestigung an einem Behälter vorgesehen ist, wobei der Behälter eine Chemikalie enthält, die durch einen Trägerstrom verdünnt wird. Der Kopf weist einen Anschluß für den Trägerstrom auf. Über einen Drehknopf ist eine Ventileinrichtung bewegbar, um die Zudosierung der Chemikalie zum Trägerstrom zu steuern. Die US 2006/013062 A1 betrifft eine Schaumvorrichtung, die bei der Herstellung von Leichtbeton einsetzbar ist. Wasser und ein Schäummittel werden zu Schaum erzeugt durch einen Körper, der mit Kugeln gefüllt ist, geleitet.In the US 2002/008161 A1 there is disclosed a spray head intended for attachment to a container, the container containing a chemical which is diluted by a carrier stream. The head has a connection for the carrier flow. Via a rotary knob, a valve device is movable to control the metered addition of the chemical to the carrier stream. The US 2006/013062 A1 relates to a foam device which can be used in the production of lightweight concrete. Water and a foaming agent are made into foam by a body filled with balls.

In der GB-A-1 576 155 A wird eine Vorrichtung bzw. ein Behälter zum Aufschäumen von Flüssigkeiten und zur Ausgabe des Schaums offenbart. Der Behälter weist einen porösen Körper auf, durch den die Flüssigkeit unter Zusammendrücken des Behälters gepreßt wird. Die Flüssigkeit wird mit der im Behälter befindlichen Luft in einer Mischkammer gemischt, wobei Schaum entsteht, der durch einen weiteren porösen Körper geleitet wird.In the GB-A-1 576 155 A discloses a device or container for foaming liquids and for dispensing the foam. The container has a porous body through which the liquid is pressed while squeezing the container. The liquid is mixed with the air in the tank in a mixing chamber to form foam which is passed through another porous body.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Schaumeinrichtung und eine Hochdruckpistole für ein Hochdruckreinigungsgerät mit einer derartigen Schaumeinrichtung anzugeben, so daß eine einfache Handhabung und insbesondere eine definierte Chemikalienzumischung und/oder ein effektives Aufschäumen ermöglicht werden.The present invention has for its object to provide a foam device and a high-pressure gun for a high-pressure cleaner with such a foam device, so that a simple handling and in particular a defined chemical admixing and / or an effective foaming are possible.

Die obige Aufgabe wird durch eine Schaumeinrichtung gemäß Anspruch 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.The above object is achieved by a foam device according to claim 1. Advantageous developments are the subject of the dependent claims.

Eine grundlegende Idee der vorliegenden Erfindung liegt darin, daß die Ventileinrichtung einen die Schaumausgabe umgebenden und koaxial dazu angeordneten Drehgriff zur Steuerung der Ventileinrichtung aufweist und daß die vorschlagsgemäße Schaumeinrichtung als Schaumdüse bzw. Vorsatzdüse für eine Hochdruckpistole o. dgl. ausgebildet ist. Dies gestattet wiederum eine sehr einfache, intuitive Handhabung und einfache Einstellung der Chemikalienzumischung. Grundsätzlich kann die Schaumeinrichtung jedoch auch für sonstige Zwecke, insbesondere auch für Feuerlöschzwecke o. dg1., eingesetzt werden.A basic idea of the present invention resides in the fact that the valve device has a rotary handle surrounding the foam output and arranged coaxially therewith for controlling the valve device and that the foam device according to the invention is designed as a foam nozzle or attachment nozzle for a high-pressure gun or the like. This in turn allows a very simple, intuitive handling and easy adjustment of the chemical admixture. In principle, however, the foam device can also be used for other purposes, in particular also for fire-fighting purposes or the like.

Gemäß einem Aspekt weist die Schaumeinrichtung eine Ventileinrichtung auf, so daß die Chemikalienzumischung nur stufig ein- bzw. verstellbar ist. Dies gestattet eine sehr einfache und gezielte Handhabung und definierte Chemikalienzumischung.According to one aspect, the foam device has a valve device, so that the chemical admixture is only one stage or adjustable. This allows a very simple and targeted handling and defined chemical admixture.

Ein weiterer Aspekt liegt darin, daß die Schaumeinrichtung zur Befestigung oder Aufnahme eines Behälters für die zuzumischende Chemikalie ausgebildet ist oder diesen bildet. Die Schaumeinrichtung bildet dann insbesondere eine Baueinheit mit dem Behälter und ist dementsprechend einfach handhabbar.Another aspect is that the foaming device is designed to form or form a container for the chemical to be admixed. The foam device then forms in particular a structural unit with the container and is accordingly easy to handle.

Ein zusätzlicher Aspekt liegt darin, daß die Schaumeinrichtung vorzugsweise ein Schaumsieb aus einem offenporigen Schaummaterial, insbesondere aus einem Metallschaum, aufweist. Dies gestattet ein sehr effektives Aufschäumen.An additional aspect is that the foaming device preferably comprises a foam screen of an open-cell foam material, in particular of a metal foam. This allows a very effective foaming.

Ein weiterer Aspekt der vorliegenden Erfindung liegt darin, daß der Schaum als Flachstrahl ausgebbar und die Strahlebene drehbar ist. Dies gestattet wiederum eine sehr einfache Handhabung und insbesondere optimale Einstellung oder Anpassung der Schaumeinrichtung.Another aspect of the present invention is that the foam can be dispensed as a flat jet and the jet plane is rotatable. This in turn allows a very simple handling and in particular optimal adjustment or adjustment of the foam device.

Weitere Merkmale, Vorteile, Eigenschaften und Aspekte der vorliegenden Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung einer bevorzugten Ausführungsform anhand der Zeichnung. Es zeigt:

Fig. 1
eine schematische Ansicht einer vorschlagsgemäßen Schaumein- richtung mit einer zugeordneten Hochdruckpistole und Hochdruckreinigungsvorrichtung;
Fig. 2
einen Schnitt der Schaumeinrichtung; und
Fig. 3
eine teiltransparente Draufsicht der Schaumeinrichtung.
Further features, advantages, features and aspects of the present invention will become apparent from the claims and the following description of a preferred embodiment with reference to the drawing. It shows:
Fig. 1
a schematic view of a proposed foam device with an associated high-pressure gun and high-pressure cleaning device;
Fig. 2
a section of the foam device; and
Fig. 3
a partially transparent top view of the foam device.

Fig. 1 zeigt in einer schematischen Ansicht eine vorschlagsgemäße Schaumeinrichtung 1, die beim Darstellungsbeispiel an eine Hochdruckreinigungsvorrichtung 2 im eingangs genannten Sinne angeschlossen ist. Insbesondere ist die Schaumeinrichtung 1 mittelbar oder unmittelbar mit einer Hochdruckpistole 3 o. dgl. verbunden, die ihrerseits über ein Hochdrucksschlauch 4 an die Hochdruckreinigungsvorrichtung 2 anschließbar ist. Fig. 1 shows a schematic view of a proposed foam device 1, which is connected in the illustrated example of a high-pressure cleaning device 2 in the aforementioned sense. In particular, the foaming device 1 is directly or indirectly connected to a high-pressure gun 3 or the like, which in turn can be connected to the high-pressure cleaning device 2 via a high-pressure hose 4.

Grundsätzlich ist die Schaumeinrichtung 1 jedoch nicht nur auf dem Gebiet der Hochdruckreinigung einsetzbar, sondern kann generell auf für sonstige Zwecke, beispielsweise auch für Feuerlöschzwecke o. dgl., eingesetzt werden. Nachfolgend wird die bevorzugte Ausgestaltung der Schaumeinrichtung 1 jedoch primär und mit Bezug auf das Gebiet der Hochdruckreinigung erläutert.In principle, however, the foam device 1 can not only be used in the field of high-pressure cleaning, but can generally be used for other purposes, for example also for fire-extinguishing purposes or the like. However, the preferred embodiment of the foam device 1 will be explained primarily and with reference to the field of high-pressure cleaning.

Die Schaumeinrichtung 1 dient dem Aufschäumen eines Gemisches aus Wasser und einer zugemischten Chemikalie. Dieses Gemisch wird unter vorzugsweise hohem Druck unter Zuführung von Luft aufgeschäumt und insbesondere versprüht.The foaming device 1 is used to foam a mixture of water and a mixed chemical. This mixture is foamed under preferably high pressure with the supply of air and in particular sprayed.

Die Schaumeinrichtung 1 ist insbesondere zur Befestigung oder Aufnahme eines Behälters 5 für die Chemikalie ausgebildet oder bildet diesen.The foam device 1 is designed in particular for fastening or receiving a container 5 for the chemical or forms this.

Beim Darstellungsbeispiel ist der Behälter 5 lösbar mit der Schaumeinrichtung 1 verbindbar, insbesondere verschraubbar. Der Behälter 5 erstreckt sich insbesondere quer zur Ausgaberichtung A der Schaumeinrichtung 1. Insbesondere ist der Behälter 5 unmittelbar mit einem Gehäuse der Schaumeinrichtung 1 verbindbar.In the illustrated example, the container 5 is detachably connected to the foam device 1, in particular screwed. The container 5 extends in particular transversely to the discharge direction A of the foam device 1. In particular, the container 5 is directly connectable to a housing of the foam device 1.

Die Schaumeinrichtung 1 ist insbesondere als Schaumdüse oder -pistole ausgebildet. Beim Darstellungsbeispiel ist die Schaumeinrichtung 1 mit einer Anschlußeinrichtung, insbesondere einer Verschraubung 6 o. dgl., zum Anschluß an eine Versorgungseinrichtung, insbesondere an ein Ausgang der Hochdruckpistole 3, versehen. Erfindungsgemäß ist die Schaumeinrichtung 1 hier als Vorsatzdüse ausgebildet. Bedarfsweise ist die Schaumeinrichtung 1 gegen eine übliche Sprühlanze o. dgl, austauschbar oder an diese anschließbar.The foam device 1 is designed in particular as a foam nozzle or gun. In the illustrated embodiment, the foam device 1 with a connection device, in particular a screw 6 o. The like., For connection to a supply device, in particular to an output of the high-pressure gun 3, provided. According to the invention, the foam device 1 is designed here as a front nozzle. If necessary, the foam device 1 against a conventional spray lance o. The like, interchangeable or connectable to this.

Fig. 1 zeigt die Hochdruckpistole 3 mit der vorschlagsgemäßen Schaumeinrichtung I, die vorzugsweise unmittelbar daran angeschlossen, insbesondere angeschraubt, ist. Fig. 1 shows the high-pressure gun 3 with the proposed foam device I, which is preferably directly connected thereto, in particular screwed is.

Fig. 2 zeigt die Schaumeinrichtung 1 in einem schematischen Längsschnitt. Die Schaumeinrichtung 1 weist vorzugsweise eine Ventileinrichtung 7 zur Steuerung der Zumischung der Chemikalie auf. Fig. 2 shows the foam device 1 in a schematic longitudinal section. The foaming device 1 preferably has a valve device 7 for controlling the admixture of the chemical.

Die Ventileinrichtung 7 ist vorzugsweise derart ausgebildet, daß die Chemikalienzumischung nur stufig ein- bzw. verstellbar ist. Besonders bevorzugt ist die Chemikalienzumischung auch vollständig ausschaltbar. In diesem Fall ist die Schaumeinrichtung 1 mit Wasser spülbar und insbesondere auch nur zur Ausgabe von reinem Wasser oder einer sonstigen Reinigungsflüssigkeit einsetzbar, beispielsweise als herkömmliche Ausgabe- bzw. Hochdruckdüse, Hierbei erfolgt dann vorzugsweise kein Aufschäumen. Bedarfsweise ist dann hierzu auch die Luftzufuhr, die ansonsten für das Aufschäumen erforderlich ist, durch die Ventileinrichtung 7 sperrbar.The valve device 7 is preferably designed such that the chemical admixture is only one step on or adjustable. Particularly preferably, the chemical admixing can also be completely switched off. In this case, the foaming device 1 can be rinsed with water and, in particular, can also be used only to dispense pure water or another cleaning liquid, for example as a conventional dispensing or high-pressure nozzle. In this case, preferably no foaming takes place. If necessary, the air supply, which is otherwise required for foaming, can then be blocked by the valve device 7.

Die Ventileinrichtung 7 weist einen die Schaumausgabe und/oder die Schaumeinrichtung 1 umgebenden und/oder koaxial dazu angeordneten Drehgriff 8 zur Steuerung der Ventileinrichtung 7 bzw. Chemikalienzumischung auf. Dies gestattet eine einfache, intuitive Bedienung.The valve device 7 has a rotary handle 8 surrounding the foam output and / or the foam device 1 and / or arranged coaxially therewith for controlling the valve device 7 or chemical admixing. This allows a simple, intuitive operation.

Die Ventileinrichtung 7 weist vorzugsweise ein insbesondere bolzenförmiges Stellelement 9 auf, das vorzugsweise mit im Querschnitt unterschiedlichen Durchgangsöffnungen, insbesondere Bohrungen 10, zur stufigen Einstellung der Chemikalienzumischung versehen ist.The valve device 7 preferably has a particular bolt-shaped adjusting element 9, which is preferably provided with different cross-sectional passage openings, in particular holes 10, for the gradual adjustment of the chemical admixing.

Das Stellelement 9 ist mittels des Drehgriffs 8 verstellbar bzw. verschiebbar, besonders bevorzugt in axialer Richtung bzw. parallel zur Ausgaberichtung A der Schaumeinrichtung 1. Je nach Stellung des Stellelements 9 stellt eine der Bohrungen 10 eine fluidische Verbindung zwischen dem Behälter 5 und einem Ansaugkanal 11 eines Injektors bzw. Schaumerzeugers 12 der Schaumeinrichtung 1 her. Vorzugsweise ist das Stellelement 9 derartig verstellbar, daß die Chemikalienzumischung bzw. -zufuhr auch blockierbar ist. Diese Stellung ist in Fig. 2 gezeigt.The adjusting element 9 is adjustable or displaceable by means of the rotary handle 8, particularly preferably in the axial direction or parallel to the dispensing direction A of the foam device 1. Depending on the position of the actuating element 9, one of the bores 10 forms a fluidic connection between the container 5 and an intake channel 11 an injector or foam generator 12 of the foam device 1 ago. Preferably, the adjusting element 9 is adjustable in such a way that the chemical admixing or supply can also be blocked. This position is in Fig. 2 shown.

Zur Verstellung des Stellelements 9, insbesondere getrieblichen Kopplung mit dem Drehgriff 8, ist insbesondere eine schraubenlinienförmige Kulissenführung 13 vorgesehen. Insbesondere greift hierzu das längs verschieblich, beispielsweise in einer Nut, geführte Stellelement 9 mit einem radialen Vorsprung 14 in eine an der Innenfläche des Drehgriffs 8 gebildete, vorzugsweise schraubenlinienförmig verlaufende Nut 15 ein, so daß ein Drehen am Drehgriff 8 die gewünschte axiale Verstellung des Stellelements 9 bewirkt.For adjusting the adjusting element 9, in particular geared coupling with the rotary handle 8, in particular a helical slotted guide 13 is provided. In particular, this applies to the longitudinally displaceable, for example, in a groove, guided actuator 9 with a radial projection 14 in a formed on the inner surface of the rotary handle 8, preferably helically extending groove 15, so that a rotation on the rotary handle 8 causes the desired axial adjustment of the actuating element 9.

Vorzugsweise ist die Chemikalienzumischung bzw. die Ventileinrichtung 7 bzw. der Drehgriff 8 nur stufig bzw. rastend verstellbar.Preferably, the chemical admixture or the valve device 7 or the rotary handle 8 is only adjustable in stages or latching.

Dementsprechend ergibt sich eine sehr einfache, intuitive Handhabung. Insbesondere ist eine einfache Einstellung einer genau definierten Chemikalienzugabe möglich.This results in a very simple, intuitive handling. In particular, a simple adjustment of a precisely defined chemical addition is possible.

Die teiltransparente, schematische Draufsicht gemäß Fig. 3 veranschaulicht insbesondere die bevorzugte schraubenlinienförmige Kulissenführung 13.The semi-transparent, schematic plan view according to Fig. 3 illustrates in particular the preferred helical slotted guide 13th

Fig. 2 ist zu entnehmen, daß der nicht maßstabsgerecht dargestellte Behälter 5 insbesondere über einen Schraubanschluß 16 an der Schaumeinrichtung 1 befestigbar, insbesondere in diesen einschraubbar ist. Fig. 2 It can be seen that the container 5 not shown to scale, in particular fastened via a screw 16 to the foam device 1, in particular in this is screwed.

Die Schaumeinrichtung 1 weist vorzugsweise ein Tauch- oder Saugrohr 17 auf, das sich in den Behälter 5 erstreckt, um die nicht dargestellte Chemikalie aus dem Behälter 5 saugen zu können. Das Tauchrohr 17 kann wahlweise steif bzw. starr oder flexibel, insbesondere schlauchförmig, ausgebildet sein.The foaming device 1 preferably has a dip or suction tube 17 which extends into the container 5 in order to be able to suck the chemical, not shown, out of the container 5. The dip tube 17 may optionally be rigid or rigid or flexible, in particular tubular, be formed.

Über die Anschlußeinrichtung 6 wird unter hohem Druck stehendes Wasser odereine sonstige Flüssigkeit zugeführt. Das Wasser wird zunächst über eine Venturidüse 18 o. dgl. in der Schaumeinrichtung 1 bzw. im Schaumerzeuger 12 in einer ersten Stufe zumindest zum Teil entspannt, so daß über den sich seitlich anschließenden Kanal 11 die Chemikalie in gewünschter Weise - je nach Stellung der Ventileinrichtung bzw. Stellelements 9 - angesaugt und mit dem Wasser vermischt werden kann. Anschließend wird das Gemisch aus Wasser und Chemikalie weiter entspannt, insbesondere Luft über Zugluftöffnungen 19 zugeführt und durch eine sich anschließende Düsenanordnung 20 geleitet, in der das Aufschäumen in gewünschter Weise erfolgt. Vorzugsweise schließt sich ein Expansions- bzw. Aufschäumraum 21 an.About the connecting device 6 is supplied under high pressure water or other liquid. The water is first at least partially expanded in the foam device 1 or in the foam generator 12 in a first stage via a Venturi nozzle 18 or the like, so that the laterally adjacent channel 11, the chemical in the desired manner - depending on the position of the valve device or actuator 9 - can be sucked and mixed with the water. Subsequently, the mixture of water and chemical is further expanded, in particular air is supplied via draft openings 19 and passed through a subsequent nozzle arrangement 20, in which the foaming takes place in the desired manner. Preferably, an expansion or Aufschäumraum 21 connects.

Schließlich wird das aufgeschäumte Gemisch bzw. der erzeugte Schaum über eine optionale Ausgabedüse 22 ausgegeben, die vorzugsweise einen flachen und/oder kegelförmigen Strahl durch entsprechende Gestaltung, insbesondere einer Austrittsöffnung 23, erzeugt. Die Ausgabedüse 22 ist vorzugsweise drehbar, um die Strahlebene zu drehen. Bedarfsweise ist das Drehen der Ausgabedüse 23 beispielsweise auf 90° begrenzt.Finally, the foamed mixture or the foam produced is dispensed via an optional dispensing nozzle 22, which preferably generates a flat and / or conical jet by appropriate design, in particular an outlet opening 23. The dispensing nozzle 22 is preferably rotatable to rotate the jet plane. If necessary, the rotation of the dispensing nozzle 23 is limited to 90 °, for example.

Gemäß einer nicht dargestellten Weiterbildung kann die Ventileinrichtung 7 zur zusätzlichen Steuerung der Zufuhr an angesaugter bzw. erzeugbarer Aufschäumluft ausgebildet sein. Beispielsweise kann die Ventileinrichtung 7 bzw. der Drehgriff 8 hierzu eine nicht dargestellte Hülse o. dgl. steuern, die die Zuluftöfnungen 19 je nach Bedarf bzw. Stellung mehr oder weniger abdeckt bzw. verschließt.According to a further embodiment, not shown, the valve device 7 may be formed for additional control of the supply of sucked or generated foaming air. For example, the valve device 7 or the rotary handle 8 for this purpose a non-illustrated sleeve o. The like. Control that covers the Zuluftöfnungen 19 more or less depending on need or position or closes.

Besonders bevorzugt weist die Schaumeinrichtung 1 ein Schaumsieb 24, wie in Fig. 2 angedeutet, zum besseren Aufschäumen des Chemikalien-Wasser-Luft-Gemisches auf. Das Schaumsieb 24 ist vorzugsweise der Austragdüse 22 vorgeordnet und/oder in den Expansions- bzw. Aufschäumraum 21 eingebaut.Particularly preferably, the foaming device 1 comprises a foam sieve 24, as in FIG Fig. 2 indicated, for better foaming of the chemical-water-air mixture. The foam screen 24 is preferably arranged upstream of the discharge nozzle 22 and / or installed in the expansion or Aufschäumraum 21.

Das Schaumsieb 24 kann beispielsweise durch eine Lochplatte, ein Sieb, gepreßte Stahlwolle, ein zusammengerolltes Kunststoffsieb o. dgl. gebildet sein. Entsprechend handelt es sich dann um eine scheibenförmige oder beispielsweise zylindrische Anordnung.The foam screen 24 may be formed, for example, by a perforated plate, a sieve, pressed steel wool, a coiled plastic sieve or the like. Accordingly, it is then a disc-shaped or, for example, cylindrical arrangement.

Besonders bevorzugt ist das Schaumsieb 24 aus einem offenporigen Schaummaterial, insbesondere einem Metallschaum, hergestellt oder besteht ausschließlich daraus. Insbesondere ist der Metallschaum aus Edelstahl hergestellt. Bei einem Ausführungsbeispiel mit einem Durchmesser von etwa 10 bis 20 mm und einer Länge von etwa 8 bis 20 mm wurden hervorragende Ergebnisse erzielt. Das Schaumverhältnis des Metallschaums oder sonstigen Schaummaterials beträgt vorzugsweise 1 zu 5 bis 1 zu 10, insbesondere etwa 1 zu 8, Masse oder Volumen von Metall zu Luft.Particularly preferably, the foam screen 24 is made of an open-pore foam material, in particular a metal foam, or consists exclusively thereof. In particular, the metal foam is made of stainless steel. In an embodiment with a diameter of about 10 to 20 mm and a length of about 8 to 20 mm excellent results were achieved. The foam ratio of the metal foam or other foam material is preferably 1 to 5 to 1 to 10, especially about 1 to 8, mass or volume of metal to air.

Es ist anzumerken, daß grundsätzlich auch andere Schaummaterial, beispielsweise aus Keramik, Kunststoff o. dgl. eingesetzt werden können.It should be noted that, in principle, other foam material, such as ceramic, plastic o. The like. Can be used.

Besonders bevorzugt ist die Schaumeinrichtung 1, insbesondere deren Ventileinrichtung 7, werkzeuglos reinigbar, demontierbar und/oder zerlegbar.Particularly preferably, the foam device 1, in particular its valve device 7, can be cleaned without tools, removed and / or dismantled.

Die vorschlagsgemäße Schaumeinrichtung 1 ist sehr einfach und robust aufgebaut, so daß sie den rauhen Alltagsbelastungen sehr gut Stand halten kann. Des weiteren gestattet die Schaumeinrichtung 1 eine sehr einfache Bedienung und einen universellen Einsatz. Besonders hervorzuheben ist hierbei die einfache Einstellung bzw. Verstellung der Chemikalienzugabe zur bedarfsgerechten Anpassung und/oder die optionale Umschaltung auf reine Wasserausgabe bzw. Abschaltung des Aufschäumens.The proposed foam device 1 is very simple and robust, so that they can withstand the harsh everyday stresses very well. Furthermore, the foam device 1 allows a very simple operation and a universal use. Particularly noteworthy here is the simple adjustment or adjustment of the chemical addition to the needs-based adjustment and / or the optional switch to pure water output or shutdown of the foaming.

Es ist anzumerken, daß die Schaumeinrichtung 1 grundsätzlich nicht nur dem Aufschäumen eines Gemisches aus Wasser und einer zugemischten Chemikalie, sondern auch für sonstige Gemische mit vergleichbaren Eigenschaften, insbesondere auch für sonstige sich insbesondere wasserähnlich verhaltende Flüssigkeiten, einsetzbar ist. Dementsprechend erstreckt sich der Begriff "Wasser" insbesondere auch auf sonstige, wasserähnliche Flüssigkeiten.It should be noted that the foaming device 1 is basically not only the foaming of a mixture of water and a mixed chemical, but also for other mixtures with comparable properties, in particular for other, in particular water-like behaving liquids used. Accordingly, the term "water" extends in particular to other water-like liquids.

Claims (10)

  1. Foam device (1) for a high-pressure gun (3), for foaming water, to which a chemical can be admixed via a valve device (7),
    wherein the valve device (7) has a rotary handle (8) for controlling the valve device (7), said rotary handle (8) surrounding the foam output and being arranged coaxially with the output direction (A), wherein the foam device (1) is formed as a nozzle attachment for the high-pressure gun (3), wherein the valve device (7) has an adjusting element (9) having different through-openings for setting the chemical admixture in a stepwise manner, and wherein the adjusting element (9) can be adjusted axially by means of the rotary handle (8).
  2. Foam device according to Claim 1, characterized in that the foam device (1) is connected indirectly or directly to the high-pressure gun (3).
  3. Foam device according to either of the preceding claims, characterized in that the valve device (7) has a bolt-like adjusting element (9).
  4. Foam device according to one of the preceding claims, characterized in that the adjusting element (9) has different through-openings, in particular bores, in cross section.
  5. Foam device according to one of the preceding claims, characterized in that the adjusting element (9) can be adjusted by means of the rotary handle (8) via a helical slotted guide (13).
  6. Foam device according to one of the preceding claims, characterized in that the valve device (7), in particular the rotary handle (8) thereof, can be adjusted or rotated in a latching manner.
  7. Foam device according to one of the preceding claims, characterized in that the foam device (1), in particular the valve device (7) thereof, is formed so as to additionally control the supply of foaming air drawn in.
  8. Foam device according to one of the preceding claims, characterized in that the foam device (1), in particular the valve device (7) thereof, is formed in such a way that the chemical admixture can be switched off and it is possible to switch to a pure water output.
  9. Foam device according to one of the preceding claims, characterized in that the foam device (1), in particular the valve device (7) thereof, can be cleaned, dismantled and/or taken apart without tools.
  10. Foam device according to one of the preceding claims, characterized in that the foam device (1) is formed in such a way that the foamed mixture can be output as a flat and/or conical jet, in particular wherein the plane of the jet can be rotated in particular in a limited manner.
EP07009007A 2006-05-05 2007-05-04 Foam device Not-in-force EP1852190B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202006007314U DE202006007314U1 (en) 2006-05-05 2006-05-05 Foam generator for foaming water, useful for attachment to a high-pressure cleaning device, includes a container for a chemical to be added to the water

Publications (3)

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EP1852190A2 EP1852190A2 (en) 2007-11-07
EP1852190A3 EP1852190A3 (en) 2008-01-02
EP1852190B1 true EP1852190B1 (en) 2011-07-27

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EP07009007A Not-in-force EP1852190B1 (en) 2006-05-05 2007-05-04 Foam device

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AT (1) ATE517694T1 (en)
DE (1) DE202006007314U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014194967A1 (en) 2013-06-07 2014-12-11 Alfred Kärcher Gmbh & Co. Kg Foam generation device
WO2015113593A1 (en) 2014-01-28 2015-08-06 Alfred Kärcher Gmbh & Co. Kg Apparatus for admixing a liquid detergent with a cleaning fluid

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Publication number Priority date Publication date Assignee Title
US8622320B2 (en) * 2008-09-09 2014-01-07 The Fountainhead Group, Inc. Sprayer
DE202012003752U1 (en) 2012-01-19 2012-04-25 Suttner Gmbh Device for producing foam
DE102012004680A1 (en) * 2012-03-12 2013-09-12 Rwe Power Ag Apparatus and method for providing a foam
DE112015004184B4 (en) 2014-09-11 2019-06-19 Mtm Hydro S.R.L. Foaming device for a high-pressure water gun
US20170348712A1 (en) 2014-12-19 2017-12-07 Daniele Marino Device for emitting a liquid
CN114602867A (en) * 2022-03-25 2022-06-10 力奇有限公司 Foam generating device and cleaning machine

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JPS5760859Y2 (en) * 1976-12-07 1982-12-25
US6425534B2 (en) * 1998-11-05 2002-07-30 Green Garden Products Company Spraying apparatus having a sealing member with apertures
WO2002036267A1 (en) * 2000-10-30 2002-05-10 Bruce Alan Whiteley Fluid mixer with rotatable eductor tube and metering orifices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014194967A1 (en) 2013-06-07 2014-12-11 Alfred Kärcher Gmbh & Co. Kg Foam generation device
WO2015113593A1 (en) 2014-01-28 2015-08-06 Alfred Kärcher Gmbh & Co. Kg Apparatus for admixing a liquid detergent with a cleaning fluid

Also Published As

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DE202006007314U1 (en) 2006-07-20
ATE517694T1 (en) 2011-08-15
EP1852190A3 (en) 2008-01-02
EP1852190A2 (en) 2007-11-07

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