EP2476481B1 - Device and method for creating foam - Google Patents

Device and method for creating foam Download PDF

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Publication number
EP2476481B1
EP2476481B1 EP11150846.1A EP11150846A EP2476481B1 EP 2476481 B1 EP2476481 B1 EP 2476481B1 EP 11150846 A EP11150846 A EP 11150846A EP 2476481 B1 EP2476481 B1 EP 2476481B1
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EP
European Patent Office
Prior art keywords
foam
feed line
liquid
gas
disinfectant
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EP11150846.1A
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German (de)
French (fr)
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EP2476481A1 (en
Inventor
Jan Nevermann
Frank Von der Haar
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Menno Chemie-Vertrieb GmbH
Menno-Chemie-Vertrieb GmbH
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Menno Chemie-Vertrieb GmbH
Menno-Chemie-Vertrieb GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam

Definitions

  • the present invention relates to a device for generating foam, in particular for producing a foam, which contains a cleaning agent and / or a disinfectant. Furthermore, it relates to a method for foam generation and the use of the device according to the invention for producing a foam, which contains in particular a cleaning agent and / or a disinfectant.
  • the application of cleaning agents and disinfectants is often in the form of a foam.
  • the foaming is used for better spray control to ensure the necessary exposure time on vertical surfaces, as well as to prevent spray and thus to ensure occupational safety.
  • the formation of fine spray drops affects users of detergents and disinfectants themselves. Such small drops are formed at high pressure on a spray nozzle but also by reflection of a spray solution on the treated surface or objects standing in space.
  • the large specific surface of a sprayed detergent or disinfectant solution can endanger the user by strong evaporation of cleaning agents or disinfectants.
  • a foam strikes a target area in a stress-relieved manner, is thus not reflected, and the intrinsically homogeneous nature with a specific surface that is smaller toward the outside also reduces the evaporation of cleaning agents or disinfectants. As a result, the workload is reduced.
  • Conventional foam generation devices include continuous and discontinuous foam generators. Discontinuous foam generators allow only short sprays of a foam. They are unsuitable for the treatment of large areas.
  • a continuous operation of a foaming device by direct connection to a water pipe and a compressed air source is in the DE 20 207 014 124 U1 described.
  • This device uses a proportional feeder which allows only low water pressures of not more than 200,000 Pa, resulting in low volume flows of the foam produced.
  • water and compressed air are mixed without a fine distribution of the liquid would take place. It therefore does not come to the formation of air bridges.
  • Foam without air bridges hits and occupies a surface in a manner similar to a liquid jet, so that only a small layer thickness can be applied. Such foam drains off vertical surfaces quickly, so that its exposure time, similar to that of an aqueous solution, is minimal.
  • Expiring foam transports a cleaning agent or disinfectant with, so that it collects on the ground and is transported, for example, in the application in livestock through slatted floors in the manure or discharged at the lowest point of the floor via a drain into the sewage.
  • unintentional inputs into the environment are to be assessed by means of risk assessment in authorization procedures specifically regulated by the Biocidal Products Act and minimized by suitable application techniques and application procedures.
  • the DE G 90 07 434.3 describes a foam generation system for cleaning equipment. First, a liquid and compressed air without fine distribution of the liquid mixed together before foaming the resulting mixture through a sieve. Again, there is no formation of air bridges.
  • US 3,618,713 discloses a device according to the preamble of claim 1 for the generation of foam, in particular for the production of a foam for cleaning or disinfection of production lines.
  • DE 102 33 471 A1 shows a cylindrical device for generating carbon dioxide added table water.
  • a water jet is divided by a sieve to foam water already in the cylinder and thus provide the largest possible surface for gas exchange.
  • Foam which has air bridges, has a "creamy" texture. This makes it possible, compared to foam without air bridges (according to the prior art), to attach larger layer thicknesses of a larger foam volume to be applied to a target surface and to place them there for a longer period of time. As a result, the exposure time at the site of action is increased, and the required amount of active ingredient per unit area is ensured over the required exposure time. In addition, the foam remains on the treated surface and dried there. This avoids inadvertent entry into the environment.
  • the liquid supply line and the gas supply line are separated, so that only liquid can be transported through the liquid line and only gas can be transported through the gas supply line.
  • the liquid exits through the screen as a fine spray jet and is then cyclone-like or vortex foamed by the gas flow from the gas supply line. This is preferably accomplished by use of a cylindrical foam generating chamber so that the gas stream can form a gas vortex along the wall of the foam generating chamber.
  • the foam produced according to the invention has air bridges.
  • an aqueous solution of a cleaning agent and / or a disinfectant is preferably introduced under a pressure in the range of 150,000 to 600,000 Pa in a mixing chamber. This corresponds to the pressure of tap water in the low pressure range.
  • This aqueous solution preferably contains a foaming agent to enhance foaming. However, if the cleaning agent or the disinfectant itself has foam-forming properties, but can also be dispensed with an additional foaming agent.
  • the aqueous solution is preferably produced by continuously metering in a water stream the cleaning agent and / or the disinfectant and optionally the foaming agent. This dosing can be done, for example, the metering hygitrix ® from Menno Chemiemaschinesgesellschaft mbH.
  • the metered addition is regulated taking into account a measurement of the detergent / disinfectant concentration in the produced use solution taking place at intervals in order to avoid underdosing or overdosing.
  • the gas supply compressed air is preferably introduced under a pressure in the range of 150,000 to 600,000 Pa in a mixing chamber.
  • the compressed air volume is 4,000 to 160,000 1 / h, in particular it is in the range of 60 to 2700 1 / min, more preferably in the range of 100 to 300 1 / min and most preferably in the range of 150 to 200 1 / min.
  • the stream of liquid introduced is preferably from 5% to 150% of the stream of introduced gas, more preferably it is in the range from 7 to 50% and most preferably from 10% to 20%. It is further preferred that the material flow of liquid introduced is a maximum of 600 1 / h. In particular, it is in the range of 5 to 40 1 / min, more preferably in the range of 10 to 30 1 / min and most preferably in the range of 15 to 25 1 / min.
  • the material flow of the liquid which is introduced through the liquid feed line (12) into the device (1), in the range of 15 to 25 1 / min.
  • the stream of gas which is introduced into the device (1) through the gas feed line (14), is preferably in the range from 150 to 2001 / min.
  • the sieve basket of the device according to the invention has a sieve-free opening and in the sieve basket is arranged at least one freely movable packing whose diameter is greater than the diameter of the screen-free opening.
  • the freely movable filler body is substantially spherical. Most preferably it consists of Teflon or is coated with Teflon.
  • the filler is pressed by the liquid flow on the screen-free opening and thus closes it. If there is a blockage of the screen basket, the filler falls back into the basket and can solve the blockage in this way, so that a self-cleaning of the screen basket is possible.
  • a shut-off valve is arranged, which is adapted to shut off the liquid supply, if there is a blockage of the screen basket.
  • the liquid supply line is arranged at an angle of 0 to 90 ° to the gas supply line.
  • the gas flow strikes the liquid spray substantially at a right angle, leaving the screen.
  • the liquid supply line and the gas supply line are arranged in parallel, wherein the gas supply line encloses the liquid supply line.
  • the gas stream thus leaves the gas supply line from an annular gap over the entire surface of the screen basket.
  • a baffle plate is arranged at the end of the screen basket, which faces away from the liquid supply line. As a result, a strong turbulence of the gas stream is achieved.
  • the liquid supply line is arranged at an angle of 90 to 180 ° to the gas supply line. In this case, the gas flow is substantially perpendicular to the liquid spray exiting the sieve.
  • a check valve is preferably arranged in the liquid supply line.
  • a check valve is preferably also arranged.
  • the foam discharge preferably has a conical shape, which allows a particularly favorable dissipation of the foam produced by the foam dissipation.
  • a hose with a lance can be connected to the foam discharge in order to apply the generated foam.
  • a small-pored, feinperliger, pasty, creamy cleaning / disinfecting foam is generated, which has small air bubbles, thereby having a higher water content, wherein larger proportions of efficient cleaning or effective disinfectant ingredients are attached to the target area.
  • a larger contact surface to the target surface and thus accelerated drug delivery is achieved because less air and more liquid per unit volume or thicker liquid layers are formed with small air bubbles. This enables accelerated impact processes.
  • the device according to the invention is dimensioned so that it is portable.
  • FIG. 1 schematically shows a first embodiment of a device for generating foam.
  • An apparatus (1) for producing a foam containing a detergent and / or a disinfectant comprises a foaming chamber (11) of polyvinyl chloride (PVC), a liquid feed line (12) terminating in the foam producing chamber (11) and the end thereof is designed as a screen basket (13), a gas supply line (14) which is connected to the foam-generating chamber (11), and a conical foam discharge (15) which is connected to the foam-generating chamber (11).
  • the liquid supply line (12) is arranged in parallel, ie at an angle of 0 °, to the gas supply line (14).
  • a shut-off valve (121) is arranged, which is adapted to shut off the liquid supply line (12) when there is a blockage of the screen basket (13).
  • a check valve (122) is arranged in the liquid supply line (12).
  • a check valve (141) is arranged in the gas supply line (14) in the gas supply line (14) in the gas supply line (14) in the gas supply line (14) in the gas supply line (14) also a check valve (141) is arranged.
  • the device (1) is dimensioned so that it is portable.
  • FIG. 2 schematically shows a second embodiment of a device for generating foam.
  • This differs from the first embodiment in that the gas supply line (14) encloses the liquid feed line (12).
  • the gas stream thus leaves the gas supply line from an annular gap over the entire surface of the screen basket (13).
  • a circular metal plate is arranged as a baffle plate (131).
  • FIG. 3 schematically shows a third embodiment of a device for generating foam. This differs from the first embodiment in that the outlet of the liquid feed line (12) is arranged at an angle of 45 ° to the gas feed line (14).
  • FIG. 4 schematically shows an embodiment of the present invention. This differs from the first embodiment in that the liquid supply line (12) is arranged transversely, ie at an angle of 90 °, to the gas supply line (14). Furthermore, the screen basket (13) has a screen-free opening (132). In the screen basket (13) is a freely movable Teflon ball as packing (133). The diameter of the Teflon ball (133) is larger than the diameter of the screen-free aperture (132).
  • FIG. 5 shows how a device according to the invention for foam generation can be connected to supply and discharge systems.
  • An aqueous solution of a disinfectant is introduced from a liquid source (2) through the liquid supply line (12) into the device (1).
  • the liquid source (2) is a dosing system hygitrix ® of Menno Chemiemaschinesgesellschaft mbH. This is connected to a water line (21), which provides tap water in the low pressure range of 300,000 to 600,000 Pa.
  • Disinfectants and foaming agent are metered from a reservoir (22) in the form of the disinfectant concentrate VENNO ® VET 1 (Menno Chemie demosgesellschaft mbH) containing formic acid as a disinfectant, and a surfactant as a foaming agent.
  • Compressed air with a maximum pressure of 600,000 Pa is introduced from a compressed air source (3) through the gas supply line (14) in the device (1).
  • the disinfectant foam produced in the device (1) is passed through the foam discharge line (15) into an application device (4).
  • the application device (4) consists of a hose (41) which ends in a lance (42). Through this lance (42) of the disinfectant foam can be applied to the surface to be disinfected.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Nozzles (AREA)

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zur Schaumerzeugung, insbesondere zur Erzeugung eines Schaums, welcher ein Reinigungsmittel und/oder ein Desinfektionsmittel enthält. Weiterhin betrifft sie ein Verfahren zur Schaumerzeugung und die Verwendung der erfindungsgemäßen Vorrichtung zur Erzeugung eines Schaums, welcher insbesondere ein Reinigungsmittel und/oder ein Desinfektionsmittel enthält.The present invention relates to a device for generating foam, in particular for producing a foam, which contains a cleaning agent and / or a disinfectant. Furthermore, it relates to a method for foam generation and the use of the device according to the invention for producing a foam, which contains in particular a cleaning agent and / or a disinfectant.

Stand der TechnikState of the art

Die Ausbringung von Reinigungsmitteln und Desinfektionsmitteln erfolgt oftmals in Form eines Schaums. Die Verschäumung dient zur besseren Spritzkontrolle, um auf senkrechten Flächen die nötige Einwirkzeit sicherzustellen, sowie um Sprühnebel zu vermeiden und damit den Arbeitsschutz sicher zu stellen. Durch die Bildung von feinen Sprühtropfen werden Anwender von Reinigungsmitteln und Desinfektionsmitteln selbst betroffen. Solche kleinen Tropfen bilden sich bei hohem Druck an einer Sprühdüse aber auch durch Reflexion einer Spritzlösung an der behandelten Fläche oder an im Raum stehenden Gegenständen. Außerdem kann die große spezifische Oberfläche einer versprühten Reinigungsmittel- oder Desinfektionsmittellösung den Anwender durch starkes Verdampfen der Reinigungsmittel bzw. Desinfektionsmittel gefährden. Ein Schaum trifft hingegen druckentspannt auf eine Zielfläche, wird dadurch nicht reflektiert und die in sich homogene Beschaffenheit mit einer nach außen hin geringeren spezifischen Oberfläche vermindert außerdem das Ausdampfen von Reinigungsmitteln bzw. Desinfektionsmitteln. Hierdurch wird die Arbeitsplatzbelastung herabgesetzt.The application of cleaning agents and disinfectants is often in the form of a foam. The foaming is used for better spray control to ensure the necessary exposure time on vertical surfaces, as well as to prevent spray and thus to ensure occupational safety. The formation of fine spray drops affects users of detergents and disinfectants themselves. Such small drops are formed at high pressure on a spray nozzle but also by reflection of a spray solution on the treated surface or objects standing in space. In addition, the large specific surface of a sprayed detergent or disinfectant solution can endanger the user by strong evaporation of cleaning agents or disinfectants. On the other hand, a foam strikes a target area in a stress-relieved manner, is thus not reflected, and the intrinsically homogeneous nature with a specific surface that is smaller toward the outside also reduces the evaporation of cleaning agents or disinfectants. As a result, the workload is reduced.

Herkömmliche Vorrichtungen zur Schaumerzeugung umfassen kontinuierlich und diskontinuierlich arbeitende Schaumerzeuger. Diskontinuierliche Schaumerzeuger ermöglichen es nur, kurze Sprühstöße eines Schaums abzugeben. Sie sind für die Behandlung großer Flächen ungeeignet.Conventional foam generation devices include continuous and discontinuous foam generators. Discontinuous foam generators allow only short sprays of a foam. They are unsuitable for the treatment of large areas.

Zur kontinuierlichen Schaumerzeugung werden verschiedene Prinzipen eingesetzt. So beschreibt beispielsweise die DE 199 33 200 A1 eine druckluftbetriebene Reinigungspistole, die Reinigungsflüssigkeit in einem Reinigungsbehälter enthält. Die Reinigungsflüssigkeit wird in einen Mischraum mittels der dort expandierenden Druckluft angesaugt. Eine derartige Reinigungsvorrichtung erlaubt allerdings nur für einen kurzen Zeitraum einen kontinuierlichen Betrieb, da die Reinigungsflüssigkeit im Reinigungsbehälter schnell verbraucht ist.For continuous foam generation different principles are used. For example, describes the DE 199 33 200 A1 a compressed air cleaning gun containing cleaning fluid in a cleaning tank. The cleaning liquid is sucked into a mixing chamber by means of the expanding compressed air there. However, such a cleaning device allows only for a short period of continuous operation, since the cleaning liquid is rapidly consumed in the cleaning tank.

Ein kontinuierlicher Betrieb einer Schaumerzeugungsvorrichtung durch direkten Anschluss an eine Wasserleitung und eine Druckluftquelle wird in der DE 20 207 014 124 U1 beschrieben. Diese Vorrichtung verwendet einen Proportionaldosierer, welcher nur geringe Wasserdrücke von nicht mehr als 200.000 Pa erlaubt, was zu geringen Volumenströmen des erzeugten Schaums führt. Außerdem werden Wasser und Druckluft vermischt, ohne dass eine feine Verteilung der Flüssigkeit stattfinden würde. Es kommt daher nicht zur Bildung von Luftbrücken. Schaum ohne Luftbrücken trifft und belegt eine Oberfläche in ähnlicher Weise wie ein Flüssigkeitsstrahl, so dass nur eine geringe Schichtdicke auftragbar ist. Solcher Schaum läuft von vertikalen Flächen schnell ab, so dass seine Einwirkzeit, ähnlich der einer wässerigen Lösung, minimal ist. Ablaufender Schaum transportiert ein Reinigungsmittel bzw. Desinfektionsmittel mit ab, so dass es sich am Boden sammelt und beispielsweise bei der Anwendung in der Viehzucht durch Spaltenböden in die Gülle abtransportiert wird oder am tiefsten Punkt des Fußbodens über einen Abfluss ins Abwasser abgeführt wird. Derartige unbeabsichtigte Einträge in die Umwelt sind zukünftig in dafür extra durch das Biozid-Gesetz geregelten Zulassungsverfahren durch Risikobewertung einzuschätzen und durch geeignete Ausbringungstechniken und Applikationsverfahren zu minimieren.A continuous operation of a foaming device by direct connection to a water pipe and a compressed air source is in the DE 20 207 014 124 U1 described. This device uses a proportional feeder which allows only low water pressures of not more than 200,000 Pa, resulting in low volume flows of the foam produced. In addition, water and compressed air are mixed without a fine distribution of the liquid would take place. It therefore does not come to the formation of air bridges. Foam without air bridges hits and occupies a surface in a manner similar to a liquid jet, so that only a small layer thickness can be applied. Such foam drains off vertical surfaces quickly, so that its exposure time, similar to that of an aqueous solution, is minimal. Expiring foam transports a cleaning agent or disinfectant with, so that it collects on the ground and is transported, for example, in the application in livestock through slatted floors in the manure or discharged at the lowest point of the floor via a drain into the sewage. In the future, such unintentional inputs into the environment are to be assessed by means of risk assessment in authorization procedures specifically regulated by the Biocidal Products Act and minimized by suitable application techniques and application procedures.

Die DE G 90 07 434.3 beschreibt ein Schaumerzeugungssystem für Reinigungsanlagen. Zunächst werden eine Flüssigkeit und Druckluft ohne feine Verteilung der Flüssigkeit miteinander vermischt, bevor ein Aufschäumen des erhaltenen Gemisches durch ein Sieb erfolgt. Auch hier kommt es nicht zur Bildung von Luftbrücken.The DE G 90 07 434.3 describes a foam generation system for cleaning equipment. First, a liquid and compressed air without fine distribution of the liquid mixed together before foaming the resulting mixture through a sieve. Again, there is no formation of air bridges.

U.S. 3,618,713 offenbart eine Vorrichtung gemäβ dem Oberbegriff des Anspruchs 1 zur Schaumerzeugung, insbesondere zur Erzeugung eines Schaums zur Reinigung, bzw. Desinfektion von Fließbändern. US 3,618,713 discloses a device according to the preamble of claim 1 for the generation of foam, in particular for the production of a foam for cleaning or disinfection of production lines.

DE 102 33 471 A1 zeigt eine zylinderförmige Vorrichtung zur Erzeugung von mit Kohlenstoffdioxid versetztem Tafelwasser. Hier wird ein Wasserstrahl durch ein Sieb aufgeteilt, um bereits im Zylinder befindliches Wasser aufzuschäumen und somit eine möglichst große Oberfläche zum Gasaustausch bereitzustellen. DE 102 33 471 A1 shows a cylindrical device for generating carbon dioxide added table water. Here, a water jet is divided by a sieve to foam water already in the cylinder and thus provide the largest possible surface for gas exchange.

Die bisherigen Stand der Technik Dokumente zielen daher in erster Linie auf die Erzeugung von Schäumen ab, wobei mit wenig Wasser, und gegebenenfalls weiteren Zusätzen, ein möglichst sehr voluminöser, flächendeckender Schaum erzeugt werden soll. Die Konsequenz daraus ist, dass der Schaum große Luftblasen enthält. Ein solcher Schaum mit großen Luftblaseneinschlüssen führt zwangsläufig zu nur dünnen Flüssigkeitsschichten, in denen der Wirkstofftransport verzögert möglich ist.The prior art documents are therefore aimed primarily at the production of foams, with little water, and optionally other additives, a very voluminous, nationwide foam should be produced. The consequence of this is that the foam contains large air bubbles. Such a foam with large bubbles entrapment inevitably leads to only thin layers of liquid in which the drug delivery is delayed delayed.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Vorrichtung zur Schaumerzeugung, insbesondere zur Erzeugung eines Schaums, welcher ein Reinigungsmittel und/oder ein Desinfektionsmittel enthält, bereitzustellen, welche über einen langen Zeitraum eine kontinuierliche Schaumerzeugung unter Bildung von Luftbrücken ermöglicht. Schaum, welcher Luftbrücken, aufweist hat eine "cremige" Konsistenz. Dies erlaubt es, im Vergleich zu Schaum ohne Luftbrücken (gemäß dem Stand der Technik), größere Schichtdicken eines größeren zu applizierenden Schaumvolumens auf eine Zieloberfläche anzubringen und dort längerfristig zu platzieren. Dadurch wird die Einwirkzeit am Wirkort erhöht, und die benötigte aktive Wirkstoffmenge je Flächeneinheit wird über die benötigte Einwirkzeit sicher gestellt. Zudem verbleibt der Schaum auf der behandelten Fläche und trocknet dort an. Dadurch wird ein unbeabsichtigter Eintrag in die Umwelt vermieden.It is therefore an object of the present invention to provide a device for generating foam, in particular for producing a foam, which contains a cleaning agent and / or a disinfectant, which allows for a long period of continuous foam generation to form air bridges. Foam, which has air bridges, has a "creamy" texture. This makes it possible, compared to foam without air bridges (according to the prior art), to attach larger layer thicknesses of a larger foam volume to be applied to a target surface and to place them there for a longer period of time. As a result, the exposure time at the site of action is increased, and the required amount of active ingredient per unit area is ensured over the required exposure time. In addition, the foam remains on the treated surface and dried there. This avoids inadvertent entry into the environment.

Beschreibung der ErfindungDescription of the invention

Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung zur Schaumerzeugung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a device for generating foam with the features of claim 1.

Ein Verfahren zur Schaumerzeugung, insbesondere zur Erzeugung eines Schaums, welcher ein Reinigungsmittel und/oder ein Desinfektionsmittel enthält, umfasst die folgenden Schritte:

  • Einleiten einer Flüssigkeit durch eine Flüssigkeitszuleitung in die erfindungsgemäße Vorrichtung,
  • Einleiten eines Gases durch eine Gaszuleitung in die erfindungsgemäße Vorrichtung,
  • Erzeugen eines Schaums durch das Zusammentreffen der Flüssigkeit und des Gases, und
  • Ableiten des Schaums durch eine Schaumableitung aus der erfindungsgemäßen Vorrichtung.
A method for producing foam, in particular for producing a foam which contains a cleaning agent and / or a disinfectant, comprises the following steps:
  • Introducing a liquid through a liquid feed line into the device according to the invention,
  • Introducing a gas through a gas supply line into the device according to the invention,
  • Generating a foam by the meeting of the liquid and the gas, and
  • Deriving the foam by a foam discharge from the device according to the invention.

Die Flüssigkeitszuleitung und die Gaszuleitung sind getrennt, so dass durch die Flüssigkeitsleitung nur Flüssigkeit transportiert werden kann und durch die Gaszuleitung nur Gas transportiert werden kann. Die Flüssigkeit tritt durch das Sieb als feiner Spritzstrahl aus und wird dann durch den Gasstrom aus der Gaszuleitung zyklonartig bzw. durch Wirbel aufgeschäumt. Dies wird bevorzugt durch Verwendung einer zylinderförmigen Schaumerzeugungskammer erreicht, so dass der Gasstrom an der Wand der Schaumerzeugungskammer entlang einen Gaswirbel bilden kann. Der erfindungsgemäß erzeugte Schaum weist Luftbrücken auf.The liquid supply line and the gas supply line are separated, so that only liquid can be transported through the liquid line and only gas can be transported through the gas supply line. The liquid exits through the screen as a fine spray jet and is then cyclone-like or vortex foamed by the gas flow from the gas supply line. This is preferably accomplished by use of a cylindrical foam generating chamber so that the gas stream can form a gas vortex along the wall of the foam generating chamber. The foam produced according to the invention has air bridges.

Durch die Flüssigkeitszuleitung wird bevorzugt eine wässerige Lösung eines Reinigungsmittels und/oder eines Desinfektionsmittels unter einem Druck im Bereich von 150.000 bis 600.000 Pa in eine Mischkammer eingeleitet. Dies entspricht dem Druck von Leitungswasser im Niederdruckbereich. Diese wässerige Lösung enthält vorzugsweise einen Schaumbildner, um die Schaumbildung zu verstärken. Sofern das Reinigungsmittel oder das Desinfektionsmittel selbst schaumbildende Eigenschaften aufweist, kann allerdings auch auf einen zusätzlichen Schaumbildner verzichtet werden. Die wässerige Lösung wird bevorzugt erzeugt, indem einem Wasserstrom kontinuierlich das Reinigungsmittel und/oder das Desinfektionsmittel sowie gegebenenfalls der Schaumbildner zudosiert werden. Diese Zudosierung kann beispielsweise mit dem Dosiersystem hygitrix® der Menno Chemie Vertriebsgesellschaft mbH erfolgen. Dieses erzeugt eine wässerige Gebrauchslösung, indem Leitungswasser kontinuierlich mit Hilfe einer Dosierpumpe ein Reinigungsmittel und/oder ein Desinfektionsmittel zudosiert wird. Die Zudosierung wird unter Berücksichtigung einer in Zeitintervallen erfolgenden Messung der Reinigungsmittel-/Desinfektionsmittelkonzentration in der erzeugten Gebrauchslösung geregelt, um eine Unterdosierung bzw. Überdosierung zu vermeiden.By the liquid supply, an aqueous solution of a cleaning agent and / or a disinfectant is preferably introduced under a pressure in the range of 150,000 to 600,000 Pa in a mixing chamber. This corresponds to the pressure of tap water in the low pressure range. This aqueous solution preferably contains a foaming agent to enhance foaming. However, if the cleaning agent or the disinfectant itself has foam-forming properties, but can also be dispensed with an additional foaming agent. The aqueous solution is preferably produced by continuously metering in a water stream the cleaning agent and / or the disinfectant and optionally the foaming agent. This dosing can be done, for example, the metering hygitrix ® from Menno Chemie Vertriebsgesellschaft mbH. This produces an aqueous working solution by continuously adding tap water to a detergent and / or a disinfectant with the aid of a metering pump. The metered addition is regulated taking into account a measurement of the detergent / disinfectant concentration in the produced use solution taking place at intervals in order to avoid underdosing or overdosing.

Durch die Gaszuleitung wird bevorzugt Druckluft unter einem Druck im Bereich von 150.000 bis 600.000 Pa in eine Mischkammer eingeleitet. Das Druckluftvolumen beträgt 4.000 bis 160.000 1/h, insbesondere liegt es im Bereich von 60 bis 2.700 1/min, besonders bevorzugt im Bereich von 100 bis 300 1/min und ganz besonders bevorzugt im Bereich von 150 bis 200 1/min.By the gas supply compressed air is preferably introduced under a pressure in the range of 150,000 to 600,000 Pa in a mixing chamber. The compressed air volume is 4,000 to 160,000 1 / h, in particular it is in the range of 60 to 2700 1 / min, more preferably in the range of 100 to 300 1 / min and most preferably in the range of 150 to 200 1 / min.

Bevorzugt beträgt der Stoffstrom an eingeleiteter Flüssigkeit 5 % bis 150 % des Stoffstromes an eingeleitetem Gas, besonders bevorzugt liegt er im Bereich von 7 bis 50 % und ganz besonders bevorzugt von 10 % bis 20 %. Es ist weiterhin bevorzugt, dass der Stoffstrom an eingeleiteter Flüssigkeit maximal 600 1/h beträgt. Insbesondere liegt er im Bereich von 5 bis 40 1/min, besonders bevorzugt im Bereich von 10 bis 30 1/min und ganz besonders bevorzugt im Bereich von 15 bis 25 1/min.The stream of liquid introduced is preferably from 5% to 150% of the stream of introduced gas, more preferably it is in the range from 7 to 50% and most preferably from 10% to 20%. It is further preferred that the material flow of liquid introduced is a maximum of 600 1 / h. In particular, it is in the range of 5 to 40 1 / min, more preferably in the range of 10 to 30 1 / min and most preferably in the range of 15 to 25 1 / min.

Bevorzugt liegt der Stoffstrom der Flüssigkeit, die durch die Flüssigkeitszuleitung (12) in die Vorrichtung (1) eingeleitet wird, im Bereich von 15 bis 25 1/min.Preferably, the material flow of the liquid, which is introduced through the liquid feed line (12) into the device (1), in the range of 15 to 25 1 / min.

Weiterhin bevorzugt liegt der Stoffstrom an Gas, welches durch die Gaszuleitung (14) in die Vorrichtung (1) eingeleitet wird, im Bereich von 150 bis 2001/min.Furthermore, the stream of gas, which is introduced into the device (1) through the gas feed line (14), is preferably in the range from 150 to 2001 / min.

Der Siebkorb der erfindungsgemäßen Vorrichtung weist einen siebfreien Durchbruch auf und in dem Siebkorb ist mindestens ein frei beweglicher Füllkörper angeordnet, dessen Durchmesser größer ist, als der Durchmesser des siebfreien Durchbruchs. Besonders bevorzugt ist der frei bewegliche Füllkörper im Wesentlichen kugelförmig. Ganz besonders bevorzugt besteht er aus Teflon oder ist mit Teflon beschichtet. Im normalen Betrieb der erfindungsgemäßen Vorrichtung wird der Füllkörper durch den Flüssigkeitsstrom auf den siebfreien Durchbruch gedrückt und verschließt diesen somit. Wenn es zu einer Verstopfung des Siebkorbes kommt, fällt der Füllkörper in den Siebkorb zurück und kann die Verstopfung auf diese Weise lösen, so dass eine Selbstreinigung des Siebkorbes möglich ist. Es ist außerdem bevorzugt, dass in der Flüssigkeitszuleitung ein Absperrventil angeordnet ist, welches eingerichtet ist, um die Flüssigkeitszuleitung abzusperren, wenn eine Verstopfung des Siebkorbes vorliegt.The sieve basket of the device according to the invention has a sieve-free opening and in the sieve basket is arranged at least one freely movable packing whose diameter is greater than the diameter of the screen-free opening. Particularly preferably, the freely movable filler body is substantially spherical. Most preferably it consists of Teflon or is coated with Teflon. In normal operation of the device according to the invention, the filler is pressed by the liquid flow on the screen-free opening and thus closes it. If there is a blockage of the screen basket, the filler falls back into the basket and can solve the blockage in this way, so that a self-cleaning of the screen basket is possible. It is also preferred that in the liquid supply line, a shut-off valve is arranged, which is adapted to shut off the liquid supply, if there is a blockage of the screen basket.

In einer bevorzugten Ausführungsform ist die Flüssigkeitszuleitung in einem Winkel von 0 bis 90° zu der Gaszuleitung angeordnet. In diesem Fall trifft der Gasstrom im Wesentlichen in einem rechten Winkel auf den Flüssigkeitssprühstrahl, welcher das Sieb verlässt. Es ist besonders bevorzugt, dass die Flüssigkeitszuleitung und die Gaszuleitung parallel angeordnet sind, wobei die Gaszuleitung die Flüssigkeitszuleitung umschließt. Der Gasstrom verlässt die Gaszuleitung somit aus einem Ringspalt über die gesamte Oberfläche des Siebkorbes. In diesen Fall ist es weiterhin bevorzugt, dass an dem Ende des Siebkorbes, welches von der Flüssigkeitszuleitung abgewandt ist, eine Prellplatte angeordnet ist. Hierdurch wird eine starke Verwirbelung des Gasstromes erreicht. In einer anderen bevorzugten Ausführungsform ist die Flüssigkeitszuleitung in einem Winkel von 90 bis 180° zu der Gaszuleitung angeordnet. In diesem Fall trifft der Gasstrom im Wesentlichen senkrecht auf den Flüssigkeitssprühstrahl, welcher das Sieb verlässt.In a preferred embodiment, the liquid supply line is arranged at an angle of 0 to 90 ° to the gas supply line. In this case, the gas flow strikes the liquid spray substantially at a right angle, leaving the screen. It is particularly preferred that the liquid supply line and the gas supply line are arranged in parallel, wherein the gas supply line encloses the liquid supply line. The gas stream thus leaves the gas supply line from an annular gap over the entire surface of the screen basket. In this case, it is further preferred that a baffle plate is arranged at the end of the screen basket, which faces away from the liquid supply line. As a result, a strong turbulence of the gas stream is achieved. In another preferred embodiment, the liquid supply line is arranged at an angle of 90 to 180 ° to the gas supply line. In this case, the gas flow is substantially perpendicular to the liquid spray exiting the sieve.

Weiterhin ist in der Flüssigkeitszuleitung bevorzugt ein Rückschlagventil angeordnet. In der Gaszuleitung ist vorzugsweise ebenfalls ein Rückschlagventil angeordnet.Furthermore, a check valve is preferably arranged in the liquid supply line. In the gas supply line, a check valve is preferably also arranged.

Die Schaumableitung weist bevorzugt eine konische Form auf, was eine besonders günstige Ableitung des erzeugten Schaums durch die Schaumableitung ermöglicht. An die Schaumableitung kann beispielsweise ein Schlauch mit einer Lanze angeschlossen werden, um den erzeugten Schaum zu applizieren.The foam discharge preferably has a conical shape, which allows a particularly favorable dissipation of the foam produced by the foam dissipation. For example, a hose with a lance can be connected to the foam discharge in order to apply the generated foam.

Erfindungsgemäß wird daher ein kleinporiger, feinperliger, pastöser, cremiger Reinigungs-/Desinfektionsschaum erzeugt, der kleine Luftblasen aufweist, dadurch einen höheren Wasseranteil hat, worin größere Anteile an effizienten Reinigungs- bzw. wirksamen Desinfektionsmittelbestandteilen auf der Zielfläche angebracht werden. Auch ist eine größere Kontaktfläche zur Zielfläche und damit beschleunigter Wirkstofftransport zu erreichen, weil weniger Luft und mehr Flüssigkeit je Volumeneinheit bzw. dickere Flüssigkeitsschichten bei kleinen Luftblasen gebildet werden. Damit werden beschleunigte Wirkungsprozesse ermöglicht.According to the invention, therefore, a small-pored, feinperliger, pasty, creamy cleaning / disinfecting foam is generated, which has small air bubbles, thereby having a higher water content, wherein larger proportions of efficient cleaning or effective disinfectant ingredients are attached to the target area. Also, a larger contact surface to the target surface and thus accelerated drug delivery is achieved because less air and more liquid per unit volume or thicker liquid layers are formed with small air bubbles. This enables accelerated impact processes.

Bevorzugt ist die erfindungsgemäße Vorrichtung so dimensioniert, dass sie tragbar ist.Preferably, the device according to the invention is dimensioned so that it is portable.

Die folgenden Beispiele dienen, in Verbindung mit den Figuren, dazu, die vorliegende Erfindung genauer zu erläutern, ohne sie dabei auf die beschriebenen Ausführungsformen einzuschränken.The following examples, in conjunction with the figures, serve to explain the present invention in more detail, without restricting it to the described embodiments.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

  • Figur 1 zeigt schematisch eine erste Ausführungsform einer Vorrichtung zur Schaumerzeugung. FIG. 1 schematically shows a first embodiment of a device for generating foam.
  • Figur 2 zeigt schematisch eine zweite Ausführungsform einer Vorrichtung zur Schaumerzeugung. FIG. 2 schematically shows a second embodiment of a device for generating foam.
  • Figur 3 zeigt schematisch eine dritte Ausführungsform einer Vorrichtung zur Schaumerzeugung. FIG. 3 schematically shows a third embodiment of a device for generating foam.
  • Figur 4 zeigt schematisch eine Ausführungsform der Vorrichtung zur Schaumerzeugung gemäß der vorliegenden Erfindung. FIG. 4 1 schematically shows an embodiment of the foam generation apparatus according to the present invention.
  • Figur 5 zeigt, wie eine erfindungsgemäße Vorrichtung zur Schaumerzeugung an Zu- und Ableitungssysteme angeschlossen werden kann. FIG. 5 shows how a device according to the invention for foam generation can be connected to supply and discharge systems.
BeispieleExamples

Figur 1 zeigt schematisch eine erste Ausführungsform einer Vorrichtung zur Schaumerzeugung. Eine Vorrichtung (1) zur Erzeugung eines Schaums, welcher ein Reinigungsmittel und/oder ein Desinfektionsmittel enthält, umfasst eine Schaumerzeugungskammer (11) aus Polyvinylchlorid (PVC), eine Flüssigkeitszuleitung (12), welche in der Schaumerzeugungskammer (11) endet, und deren Ende als Siebkorb (13) ausgeführt ist, eine Gaszuleitung (14), welche mit der Schaumerzeugungskammer (11) verbunden ist, und eine konische Schaumableitung (15), welche mit der Schaumerzeugungskammer (11) verbunden ist. Die Flüssigkeitszuleitung (12) ist parallel, d. h. in einem Winkel von 0°, zu der Gaszuleitung (14) angeordnet. In der Flüssigkeitszuleitung (12) ist ein Absperrventil (121) angeordnet, welches eingerichtet ist, um die Flüssigkeitszuleitung (12) abzusperren, wenn eine Verstopfung des Siebkorbes (13) vorliegt. Außerdem ist in der Flüssigkeitszuleitung (12) ein Rückschlagventil (122) angeordnet. In der Gaszuleitung (14) ist ebenfalls ein Rückschlagventil (141) angeordnet. Die Vorrichtung (1) ist so dimensioniert, dass sie tragbar ist. FIG. 1 schematically shows a first embodiment of a device for generating foam. An apparatus (1) for producing a foam containing a detergent and / or a disinfectant comprises a foaming chamber (11) of polyvinyl chloride (PVC), a liquid feed line (12) terminating in the foam producing chamber (11) and the end thereof is designed as a screen basket (13), a gas supply line (14) which is connected to the foam-generating chamber (11), and a conical foam discharge (15) which is connected to the foam-generating chamber (11). The liquid supply line (12) is arranged in parallel, ie at an angle of 0 °, to the gas supply line (14). In the liquid supply line (12), a shut-off valve (121) is arranged, which is adapted to shut off the liquid supply line (12) when there is a blockage of the screen basket (13). In addition, a check valve (122) is arranged in the liquid supply line (12). In the gas supply line (14) also a check valve (141) is arranged. The device (1) is dimensioned so that it is portable.

Figur 2 zeigt schematisch eine zweite Ausführungsform einer Vorrichtung zur Schaumerzeugung. Diese unterscheidet sich von der ersten Ausführungsform darin, dass die Gaszuleitung (14) die Flüssigkeitszuleitung (12) umschließt. Der Gasstrom verlässt die Gaszuleitung somit aus einem Ringspalt über die gesamte Oberfläche des Siebkorbes (13). An dem Ende des Siebkorbes (13), welches von der Flüssigkeitszuleitung (12) abgewandt ist, ist ein kreisförmiges Metallblech als Prellplatte (131) angeordnet. Hierdurch wird eine starke Verwirbelung des Gasstromes erreicht. FIG. 2 schematically shows a second embodiment of a device for generating foam. This differs from the first embodiment in that the gas supply line (14) encloses the liquid feed line (12). The gas stream thus leaves the gas supply line from an annular gap over the entire surface of the screen basket (13). At the end of the screen basket (13), which faces away from the liquid feed line (12), a circular metal plate is arranged as a baffle plate (131). As a result, a strong turbulence of the gas stream is achieved.

Figur 3 zeigt schematisch eine dritte Ausführungsform einer Vorrichtung zur Schaumerzeugung. Diese unterscheidet sich von der ersten Ausführungsform darin, dass der Austritt der Flüssigkeitszuleitung (12) in einem Winkel von 45°, zu der Gaszuleitung (14) angeordnet ist. FIG. 3 schematically shows a third embodiment of a device for generating foam. This differs from the first embodiment in that the outlet of the liquid feed line (12) is arranged at an angle of 45 ° to the gas feed line (14).

Figur 4 zeigt schematisch eine Ausführungsform der vorliegenden Erfindung. Diese unterscheidet sich von der ersten Ausführungsform darin, dass die Flüssigkeitszuleitung (12) quer, d. h. in einem Winkel von 90°, zu der Gaszuleitung (14) angeordnet ist. Weiterhin weist der Siebkorb (13) einen siebfreien Durchbruch (132) auf. In dem Siebkorb (13) befindet sich eine frei bewegliche Teflonkugel als Füllkörper (133). Der Durchmesser der Teflonkugel (133) ist größer, als der Durchmesser des siebfreien Durchbruchs (132). FIG. 4 schematically shows an embodiment of the present invention. This differs from the first embodiment in that the liquid supply line (12) is arranged transversely, ie at an angle of 90 °, to the gas supply line (14). Furthermore, the screen basket (13) has a screen-free opening (132). In the screen basket (13) is a freely movable Teflon ball as packing (133). The diameter of the Teflon ball (133) is larger than the diameter of the screen-free aperture (132).

Figur 5 zeigt, wie eine erfindungsgemäße Vorrichtung zur Schaumerzeugung an Zu- und Ableitungssysteme angeschlossen werden kann. Eine wässerige Lösung eines Desinfektionsmittels wird aus einer Flüssigkeitsquelle (2) durch die Flüssigkeitszuleitung (12) in die Vorrichtung (1) eingeleitet. Bei der Flüssigkeitsquelle (2) handelt es sich um ein Dosiersystem hygitrix® der Menno Chemie Vertriebsgesellschaft mbH. Dieses ist mit einer Wasserleitung (21) verbunden, welche Leitungswasser im Niederdruckbereich von 300.000 bis 600.000 Pa bereitstellt. Desinfektionsmittel und Schaumbildner werden aus einem Vorratsbehälter (22) in Form des Desinfektionsmittelkonzentrats VENNO® VET 1 (Menno Chemie Vertriebsgesellschaft mbH) zudosiert, welches Ameisensäure als Desinfektionsmittel und eine Tensid als Schaumbildner enthält. Druckluft mit einem Druck von maximal 600.000 Pa wird aus einer Druckluftquelle (3) durch die Gaszuleitung (14) in die Vorrichtung (1) eingeleitet. Der in der Vorrichtung (1) erzeugte Desinfektionsmittelschaum wird durch die Schaumableitung (15) in eine Applikationsvorrichtung (4) geleitet. Die Applikationsvorrichtung (4) besteht aus einem Schlauch (41), welcher in einer Lanze (42) endet. Durch diese Lanze (42) kann der Desinfektionsmittelschaum auf der zu desinfizierenden Fläche appliziert werden. FIG. 5 shows how a device according to the invention for foam generation can be connected to supply and discharge systems. An aqueous solution of a disinfectant is introduced from a liquid source (2) through the liquid supply line (12) into the device (1). The liquid source (2) is a dosing system hygitrix ® of Menno Chemie Vertriebsgesellschaft mbH. This is connected to a water line (21), which provides tap water in the low pressure range of 300,000 to 600,000 Pa. Disinfectants and foaming agent are metered from a reservoir (22) in the form of the disinfectant concentrate VENNO ® VET 1 (Menno Chemie Vertriebsgesellschaft mbH) containing formic acid as a disinfectant, and a surfactant as a foaming agent. Compressed air with a maximum pressure of 600,000 Pa is introduced from a compressed air source (3) through the gas supply line (14) in the device (1). The disinfectant foam produced in the device (1) is passed through the foam discharge line (15) into an application device (4). The application device (4) consists of a hose (41) which ends in a lance (42). Through this lance (42) of the disinfectant foam can be applied to the surface to be disinfected.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1:1:
Vorrichtung zur Erzeugung eines SchaumsDevice for producing a foam
11:11:
SchaumerzeugungskammerFoam generating chamber
12:12:
Flüssigkeitszuleitungliquid supply
121:121:
Absperrventilshut-off valve
122:122:
Rückschlagventilcheck valve
13:13:
Siebkorbstrainer
131:131:
Prellplattebaffle plate
132:132:
Durchbruchbreakthrough
133:133:
Füllkörperpacking
14:14:
Gaszuleitunggas supply
141:141:
Rückschlagventilcheck valve
15:15:
Schaumableitungfoam dissipation
2:2:
Flüssigkeitsquelleliquid source
21:21:
Wasserleitungwater pipe
22:22:
Vorratsbehälterreservoir
3:3:
DruckluftquelleCompressed air source
4:4:
Applikationsvorrichtungapplicator
41:41:
Schlauchtube
42:42:
Lanzelance

Claims (16)

  1. A device (1) for foam generation, in particular for generating a foam comprising a cleaning agent and/or a disinfectant, comprising
    a foam generation chamber (11),
    a liquid feed line (12), which terminates in the foam generation chamber (11), and the end of which is embodied as screen basket (13),
    a gas feed line (14), which is connected to the foam generation chamber (11), and
    a foam discharge line (15), which is connected to the foam generation chamber (11),
    characterized in that the screen basket (13) comprises a screen-free opening (132) and in the screen basket at least one freely moveable packing (133) is arranged, the diameter of which is larger than the diameter of the screen-free opening (132).
  2. The device according to Claim 1, characterized in that the freely moveable packing (133) is substantially spherical.
  3. The device according to any one of the preceding claims, characterized in that in the liquid feed line (12) a shut-off valve (121) is arranged, which is equipped in order to shut off the liquid feed line (12) in the presence of a clogging of the screen basket (13).
  4. The device according to any one of the preceding claims, characterized in that the liquid feed line (12) is arranged at an angle of 0 to 90° to the gas feed line (14).
  5. The device according to any one of the Claims 1 to 3, characterized in that the liquid feed line (12) is arranged at an angle of 90 to 180° to the gas feed line (14).
  6. The device according to any one of the preceding claims, characterized in that the foam discharge line (15) is conical in shape.
  7. The device according to any one of the preceding claims, characterized in that the device (1) is dimensioned so that it is portable.
  8. A method for foam generation, in particular for generating a foam comprising a cleaning agent and/or a disinfectant, comprising the following steps:
    - introducing a liquid through a liquid feed line (12) into a device (1) according to any one of the Claims 1 to 7,
    - introducing a gas through a gas feed line (14) into the device (1) according to any one of the Claims 1 to 7,
    - generating a foam through the meeting of the liquid and of the gas, and
    - discharging the foam through a foam discharge line (15) from the device (1) according to any one of the Claims 1 to 7.
  9. The method according to Claim 8, characterized in that through the liquid feed line (12) a watery solution of a cleaning agent and/or of a disinfectant is introduced into a mixing chamber (11) under a pressure in the range from 150,000 to 600,000 Pa.
  10. The method according to Claim 9, characterized in that the watery solution comprises a foaming agent.
  11. The method according to Claim 9 or 10, characterized in that the watery solution is generated in that a cleaning agent and/or a disinfectant and optionally a foaming agent is/are continuously added into a water stream in a metered manner.
  12. The method according to any one of the Claims 8 to 11, characterized in that through the gas feed line (14) compressed air under a pressure in the range from 150,000 to 600,000 Pa is introduced into a mixing chamber (11).
  13. The method according to any one of the Claims 8 to 12, characterized in that the substance stream of the liquid, which is introduced into the device (1) through the liquid feed line (12), corresponds to 5 to 150% of the substance stream of gas, which is introduced into the device (1) through the gas feed line (14).
  14. The method according to any one of the Claims 8 to 12, characterized in that the substance stream of the liquid, which is introduced into the device (1) through the liquid feed line (12), is in the range from 15 to 25 1/min.
  15. The method according to any one of the Claims 8 to 12, characterized in that the substance stream of gas, which is introduced into the device (1) through the gas feed line (14), is in the range from 150 to 200 1/min.
  16. Use of a device (1) according to any one of the Claims 1 to 7, for generating a foam, which in particular comprises a cleaning agent and/or a disinfectant.
EP11150846.1A 2011-01-13 2011-01-13 Device and method for creating foam Active EP2476481B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3238833A1 (en) 2016-04-29 2017-11-01 Menno Chemie-Vertrieb GmbH Spray device for a spray robot and spray robot

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3075569B1 (en) 2017-12-22 2020-03-06 Theseo DISINFECTANT COMPOSITION
EP3800239A1 (en) 2019-10-01 2021-04-07 Menno Chemie-Vertrieb GmbH Liquid, acidic cleaning compositions for hard surfaces

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618713A (en) * 1969-12-12 1971-11-09 Robert L Batchelor Foam lubricating system and method
DE9007434U1 (en) 1990-03-21 1991-09-19 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE19933200C2 (en) 1999-07-15 2003-04-10 Schneider Druckluft Gmbh Compressed air powered cleaning device
DE10233471B4 (en) * 2002-07-24 2007-02-08 Kundo Systemtechnik Gmbh Method and apparatus for producing carbonated table water
DE202007014124U1 (en) 2007-06-29 2008-08-14 Lorenzen, Andreas Device for generating foam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3238833A1 (en) 2016-04-29 2017-11-01 Menno Chemie-Vertrieb GmbH Spray device for a spray robot and spray robot

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