WO2001030508A1 - Foam dispenser - Google Patents

Foam dispenser Download PDF

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Publication number
WO2001030508A1
WO2001030508A1 PCT/EP2000/010072 EP0010072W WO0130508A1 WO 2001030508 A1 WO2001030508 A1 WO 2001030508A1 EP 0010072 W EP0010072 W EP 0010072W WO 0130508 A1 WO0130508 A1 WO 0130508A1
Authority
WO
WIPO (PCT)
Prior art keywords
foam
liquid
spring
chamber
liquid pump
Prior art date
Application number
PCT/EP2000/010072
Other languages
German (de)
French (fr)
Inventor
Dörte POST
Thomas Sampers
Original Assignee
Henkel-Ecolab Gmbh & Co. Ohg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henkel-Ecolab Gmbh & Co. Ohg filed Critical Henkel-Ecolab Gmbh & Co. Ohg
Publication of WO2001030508A1 publication Critical patent/WO2001030508A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/06—Dispensers for soap
    • A47K5/12—Dispensers for soap for liquid or pasty soap
    • A47K5/1202—Dispensers for soap for liquid or pasty soap dispensing dosed volume
    • A47K5/1204—Dispensers for soap for liquid or pasty soap dispensing dosed volume by means of a rigid dispensing chamber and pistons
    • A47K5/1205—Dispensing from the top of the dispenser with a vertical piston
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste, or the like
    • A47K5/14—Foam or lather making devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1087—Combination of liquid and air pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1097—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/0025—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply
    • B05B7/0031—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/06—Gas or vapour producing the flow, e.g. from a compressible bulb or air pump

Definitions

  • the invention relates to a foam generating device with an air pumping chamber, a liquid pumping chamber, a mixing chamber with foam generating device which can be brought into flow connection with both chambers by means of valves, and an actuating head with a foam guide channel connected thereto and a foam outlet channel branching off at right angles therefrom, against the force of a first spring arranged in the liquid pumping chamber Depressing the actuating head, an air pump piston guided in the air pump chamber and a hollow liquid pump piston guided in the liquid pump chamber are movable.
  • Such a foam generation device is known on the market as "F2 Finger Pump Foamer” from Airspray®.
  • This foam generation device is connected to a container which in each case contains the liquid to be foamed in the foam generation device. The user takes this into the foam generation and / or actuation of this foam generation device Hand and creates the foam by pressing down the actuating head.
  • the foam production device sold by Airspray® is not suitable for use in the known single-lever or single-arm wall dispenser devices, since then the lever of the wall dispenser device is not reset sufficiently and the foam generation therefore does not function satisfactorily.
  • the invention is based on the object of further developing a generic foam generating device for use in single-arm or single-lever wall-mounted dispensing devices.
  • this object is achieved according to the invention in that the foam outlet channel ends on the outlet side in a section inclined by 55 ° to 75 °, preferably 65 °, in relation to the foam outlet channel, and in that a second, to the first, on the liquid pumping piston Spring acts in the same acting spring.
  • the foam generation device With the foam generation device further developed by these features, it is achieved that such a device can be used functionally in single-arm or single-lever wall dispensing devices.
  • the second spring creates an additional force which moves the actuating arm or lever of the dispensing device, which acts on the actuating head of the foam generating device, into its initial position after actuation.
  • the 55 ° to 75 °, particularly preferably 65 ° inclined end section of the foam outlet channel in cooperation with the backward movement of the actuation lever caused by the second spring, ensures that after actuation of the dispenser device, no foam drips from the outlet channel or no undesired "foam noses" arise or remain at the end of the foam outlet channel.
  • this foam generating device creates a foam that is extremely fine-bubble, creamy and particularly stable. Such a foam does not collapse so easily when applied to oily or oily skin.
  • the invention therefore provides that the foam generating device is part of a single-lever wall dispenser device.
  • the device according to the invention is advantageous in the application of liquid washing lotion or liquid antimicrobial washing lotion, which is why the invention finally provides for the use of the foam generating device for generating foam from a liquid washing lotion or liquid antimicrobial washing lotion in a single-lever wall dispenser device.
  • the invention is explained in more detail below with reference to a drawing.
  • this shows a foam generating device, generally designated 1, which, in the application, is arranged in the mouth of a bottle-like container (not shown) which contains the liquid to be foamed with the foam generating device 1, for example a washing lotion or an antimicrobial washing lotion.
  • the foam generating device 1 has an air pumping chamber 2, which is formed in one piece with a liquid pumping chamber 3 arranged coaxially to it.
  • the air pump chamber 2 is essentially shaped like a cylinder pot.
  • an air pump piston 4 is arranged sealingly against the cylindrical inner wall.
  • the air pump piston 4 is also shaped like a cylinder pot and has step-like diameter reductions with corresponding cylindrical wall sections in the direction of the actuating head 5.
  • a disk-shaped valve 16 is fastened to this step section in such a way that its edge areas can be lifted off from the adjacent wall and surface areas in the direction of the arrows when the pressure or vacuum is applied accordingly.
  • the air pump piston 4 lies in its illustrated starting position on an inner wall surface of an adapter element 9 holding the air pump chamber 2.
  • a third stage 10 is followed by a cylindrical section of the air pump piston 4, which comprises a mixing chamber 11. In the direction of a foam guide channel 12, the mixing chamber 11 is closed off by a wall section 13 with a foam generating device 14 formed centrally therein, in this case a nozzle-like opening.
  • the foam generating device 14 can also consist of a sieve or two sieves arranged at a distance from one another.
  • the display guide channel 12 is formed on the foam generating device 14.
  • the mixing chamber 11 formed by the air pump piston 4 is encompassed by a lower cylindrical region of the actuating head 5, which is arranged in a depressible manner in a cylindrical region of the adapter 9.
  • there is a hollow liquid pump piston 15 which is aligned coaxially with the foam generating device 14 and which has its opposite end in the zy- Linden-shaped liquid pump chamber 3 is immersed.
  • the liquid pump piston 15 has star-shaped flange regions 17 which extend with their outer extent into the region of the first stage 6 and which lie flat against the annular disk valve 16 when the foam generating device in the figure shown starting position is.
  • the liquid pump piston 15 is surrounded below the flange regions 17 by a second spring 18, which, with its end facing away from the flange regions 17, rests on an upper peripheral edge of the liquid pump chamber 3 into which the liquid pump piston 15 is immersed.
  • a first spring 19 Arranged within the cylindrical liquid pump chamber 3 is a first spring 19 which bears against an annular flange end 20 of a hollow, cylindrical liquid inlet element 21 and the end of the liquid pump piston 15 which plunges into the liquid pump chamber 3.
  • the first spring 19 is dimensioned with respect to its length and spring force in such a way that it moves the liquid pump piston 15 and thus also the elements air pump piston 4 and actuating head 5 lying against it into the starting position shown in the figure and holds it against gravity.
  • Both the spring 18 and the spring 19 are a compression spring inside the hollow liquid pump piston 15, an inner rod 22 is arranged, which with conical sealing surfaces 23, which abut correspondingly conical sealing surfaces 24 of the liquid pump piston 15, the interior of the liquid pump piston 15 and the liquid pumping chamber 3 against the mixing chamber 11 in the illustrated starting position of the foam generating device.
  • the rod 22 With its opposite end, the rod 22 is immersed in the hollow liquid inlet element 21, the first spring 19 encompassing the area neither immersed in the liquid pump piston 15 nor in the liquid inlet element 21.
  • the end of the cylindrical liquid inlet element facing the liquid inlet opening 25 has slot-shaped openings 26 in the lower edge region of its side wall.
  • the liquid pump chamber 3 In the transition region between the liquid inlet opening 25 and the end of the liquid pumping chamber 3 which forms a step 27 for a stop of the annular flange end 20, the liquid pump chamber 3 has a conical region 28 which is designed as a check valve by means of a ball 29 arranged therein.
  • a riser pipe is connected to the liquid inlet opening 25 and extends to the bottom of the container containing the liquid to be foamed.
  • the actuating head 5 has a foam outlet channel 30 branching off at a right angle from the foam guide channel 12. This foam outlet channel 30 ends on the outlet side in a section 31 which extends outward at 65 ° (angle ⁇ ) with respect to the foam outlet channel 30.
  • the adapter element 9 has a cylindrical section 32, the wall of which engages in a sealing manner in the mouth of the container (not shown) containing the liquid to be foamed and bears against it.
  • a thread can also be provided in this area, so that the device shown and the container for refilling the container can be separated from one another.
  • the foam generating device 1 has holding arms or holding elements 33, 34, with the aid of which it is to be attached to a single-arm or single-lever wall dispenser device.
  • the actuating head 5 is depressed in the direction of arrow 35. This movement is transmitted to the air pump piston 4 and the liquid pump piston 15, which rests on the inside at the third stage 10 and / or by direct contact with the valve 16 at the first stage 6, by non-positive transmission at the third stage 10.
  • the liquid pump piston 15 thus moves into the liquid pump chamber 3, the conical sealing surfaces 23 and 24 opening an annular liquid passage opening into the mixing chamber 11.
  • the first spring 19 and the second spring 18 drive the liquid pump piston 15 and the air pump piston 4 again into the starting position shown in the figure.
  • a vacuum is formed in the air pump chamber 2, which causes the valve 16 in the area of the ventilation holes 7 to move away from them in the direction of the arrows, and thus the air pump chamber 2 is vented.
  • a negative pressure is generated, due to which the ball 29 moves upward from the closed position and liquid is sucked in through the liquid inlet opening 25, which, due to the slit-shaped openings 26, has the possibility of the ball 29 to flow around.
  • the second compression spring 18 is a spring made of stainless steel with a spring force of approx. 10 N. This spring causes the foam generating device 1 to also have an actuating lever or actuating arm of a wall dispenser, not shown, resting against the actuating head 5 against its gravity can move back the starting position.
  • the wall of the foam outlet channel is provided with a chamfer 36.
  • a bevel is formed so that there is only a small area at this point where foam residues could settle, which could lead to soiling or foam noses.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

The invention relates to a foam producing device (1) with an air pump chamber (2), a liquid pump chamber (3), a mixing chamber (11) with foam producing element (14) that can be linked with both chambers (2, 3) via valves (16; 23, 24) so that the liquid can freely flow. An actuator head (5) with a foam guiding channel (12) and with a foam delivery channel (30) that branches off at a right angle is connected to said foam producing element. An air pump piston (4) that extends through the air pump chamber (2) and a hollow liquid pump piston (15) that extends through the liquid pump chamber (3) can be displaced against the force of a first spring (19) located in the liquid pump chamber (3) by pressing down the actuator head (5). The aim of the invention is to improve such a device for use in single-arm or single-lever wall dispenser devices. To this end, the foam delivery channel (30) terminates at the outlet side in a section (31) that is outwards inclined vis-à-vis the foam delivery channel (30) by 55° to 75°, preferably 65°. The liquid pump piston (15) is impinged upon by a second spring (18) that acts in the same direction as the first spring (19).

Description

„Schaumspender' "Foam dispenser '
Die Erfindung richtet sich auf eine Schaumerzeugungsvorrichtung mit einer Luftpumpkammer, einer Flüssigkeitspumpkammer, einer mit beiden Kammern mittels Ventilen in Strömungsverbindung bringbaren Mischkammer mit Schaumerzeugungseinrichtung und daran angeschlossenem Betätigungskopf mit Schaumführungskanal und rechtwinklig davon abzweigendem Schaumaustrittskanal, wobei gegen die Kraft einer in der Flüssigkeitspumpkammer angeordneten ersten Feder durch Niederdrücken des Betätigungskopfes ein in der Luftpumpkammer geführter Luftpumpkolben und ein in der Flüssigkeitspumpkammer geführter hohler Flüssigkeitspumpkolben bewegbar sind.The invention relates to a foam generating device with an air pumping chamber, a liquid pumping chamber, a mixing chamber with foam generating device which can be brought into flow connection with both chambers by means of valves, and an actuating head with a foam guide channel connected thereto and a foam outlet channel branching off at right angles therefrom, against the force of a first spring arranged in the liquid pumping chamber Depressing the actuating head, an air pump piston guided in the air pump chamber and a hollow liquid pump piston guided in the liquid pump chamber are movable.
Eine deratige Schaumerzeugungsvorrichtung ist als „F2 Finger Pump Foamer" der Firma Airspray® im Markt bekannt. Diese Schaumerzeugungsvorrichtung ist mit einem Behälter verbunden, der jeweils die in der Schaumerzeugungsvorrichtung aufzuschäumende Flüssigkeit enthält. Zur Schaumerzeugung und /Betätigung dieser Schaumerzeugungsvorrichtung nimmt der Benutzer diese in die Hand und erzeugt durch Niederdrücken des Betätigungskopfes den Schaum.Such a foam generation device is known on the market as "F2 Finger Pump Foamer" from Airspray®. This foam generation device is connected to a container which in each case contains the liquid to be foamed in the foam generation device. The user takes this into the foam generation and / or actuation of this foam generation device Hand and creates the foam by pressing down the actuating head.
Weiterhin gibt es im Stand der Technik Einhebel- oder Einarm- Wandspender, die einen Flüssigkeitsbehälter und eine Schaumerzeugungsvorrichtung umfassen und umhüllen. Diese weisen den Nachteil auf, daß sie nicht immer eine gleichbleibende Menge Schaum und gleichbleibende Qualität des Schaumes erzeugen. Häufig bleiben auch Schaumreste am Austrittskanal dieser Spendervorrichtungen zurück, die zu einer Verschmutzung führen.Furthermore, there are single lever or single arm wall dispensers in the prior art which comprise and encase a liquid container and a foam generating device. These have the disadvantage that they do not always produce a constant amount of foam and a constant quality of the foam. Often, foam residues remain on the outlet channel of these dispensing devices, which lead to contamination.
Die von der Firma Airspray® vertriebene Schaumerzeugungsvorrichtung ist nicht geeignet, in die bekannten Einhebel- oder Einarm- Wandspendervorrichtungen eingesetzt zu werden, da sich dann der Hebel der Wandspendervorrichtung nicht ausreichend zurückstellt und die Schaumerzeugung somit nicht befriedigend funktioniert. Der Erfindung liegt demgegenüber die Aufgabe zugrunde, eine gattungsgemäße Schaumerzeugungsvorrichtung für den Einsatz in Einarm- oder Einhebel- Wandspendervorrichtungen weiterzuentwickeln.The foam production device sold by Airspray® is not suitable for use in the known single-lever or single-arm wall dispenser devices, since then the lever of the wall dispenser device is not reset sufficiently and the foam generation therefore does not function satisfactorily. In contrast, the invention is based on the object of further developing a generic foam generating device for use in single-arm or single-lever wall-mounted dispensing devices.
Bei einer Schaumerzeugungsvorrichtung der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, daß der Schaumaustrittskanal auslaßseitig in einem um 55° bis 75°, vorzugsweise 65°, gegenüber dem Schaumaustrittskanal auswärts geneigten Abschnitt endet und daß an dem Flüssigkeitspumpkolben eine zweite, zur ersten Feder gleicherichtet wirkende Feder angreift.In a foam generating device of the type mentioned in the introduction, this object is achieved according to the invention in that the foam outlet channel ends on the outlet side in a section inclined by 55 ° to 75 °, preferably 65 °, in relation to the foam outlet channel, and in that a second, to the first, on the liquid pumping piston Spring acts in the same acting spring.
Mit der durch diese Merkmale weiterentwickelten Schaumerzeugungsvorrichtung wird erreicht, daß eine solche Vorrichtung in Einarm- oder Einhebel- Wandspendervorrichtungen funktionsfähig einsetzbar ist. Durch die zweite Feder wird eine zusätzliche Kraft geschaffen, die den Betätigungsarm oder -hebel der Spendervorrichtung, die auf den Betätigungskopf der Schaumerzeugungsvorrichtung wirkt, nach Betätigung in seine Ausgangslage zurückbewegt. Durch den um 55° bis 75°, insbesondere vorzugsweise 65° geneigten Endabschnitt des Schaumaustrittskanals wird im Zusammenwirken mit der durch die zweite Feder bewirkten Rückwärtsbewegung des Betätigungshebels bewirkt, daß nach Betätigung der Spendervorrichtung kein Schaum aus dem Austrittskanal nachtropft bzw. keine unerwünschten „Schaumnasen" am Ende des Schaumaustrittskanals entstehen bzw. stehen bleiben.With the foam generation device further developed by these features, it is achieved that such a device can be used functionally in single-arm or single-lever wall dispensing devices. The second spring creates an additional force which moves the actuating arm or lever of the dispensing device, which acts on the actuating head of the foam generating device, into its initial position after actuation. The 55 ° to 75 °, particularly preferably 65 ° inclined end section of the foam outlet channel, in cooperation with the backward movement of the actuation lever caused by the second spring, ensures that after actuation of the dispenser device, no foam drips from the outlet channel or no undesired "foam noses" arise or remain at the end of the foam outlet channel.
Insgesamt entsteht bei dieser Schaumerzeugungsvorrichtung ein Schaum, der extrem feinblasig, cremig und besonders stabil ist. Ein solcher Schaum fällt selbt bei Applikation auf fettige bzw. ölige Haut nicht so leicht in sich zusammen.Overall, this foam generating device creates a foam that is extremely fine-bubble, creamy and particularly stable. Such a foam does not collapse so easily when applied to oily or oily skin.
In Ausgestaltung sieht die Erfindung daher vor, daß die Schaumerzeugungsvorrichtung Bestandteil einer Einhebel- Wandspender- Vorrichtung ist. Von Vorteil ist die erfindungsgemäße Vorrichtung bei der Applikation flüssiger Waschlotion oder flüssiger antimikro- bieller Waschlotion, weshalb die Erfindung schließlich die Verwendung der Schaumerzeugungsvorrichtung zur Schaumerzeugung aus einer flüssigen Waschlotion oder flüssigen antimikrobiellen Waschlotion in einer Einhebel-Wandspender-Vorrichtung vorsieht. Die Erfindung ist nachstehend anhand einer Zeichnung beispielhaft näher erläutert.In an embodiment, the invention therefore provides that the foam generating device is part of a single-lever wall dispenser device. The device according to the invention is advantageous in the application of liquid washing lotion or liquid antimicrobial washing lotion, which is why the invention finally provides for the use of the foam generating device for generating foam from a liquid washing lotion or liquid antimicrobial washing lotion in a single-lever wall dispenser device. The invention is explained in more detail below with reference to a drawing.
Diese zeigt in der einzigen Figur eine insgesamt mit 1 bezeichnete Schaumerzeugungsvorrichtung, die im Anwendungsfalle in der Mündung eines nicht dargestellten, flaschen- artigen Behältnisses angeordnet ist, welches die mit der Schaumerzeugungsvorrichtung 1 aufzuschäumende Flüssigkeit, beispielsweise eine Waschlotion oder eine antimikrobielle Waschlotion, enthält. Die Schaumerzeugungsvorrichtung 1 weist eine Luftpumpkammer 2 auf, die einteilig mit einer koaxial zu ihr angeordneten Flüssigkeitspumpkammer 3 ausgebildet ist. Die Luftpumpkammer 2 ist im wesentlichen zylindertopfformig ausgeformt. In der Luftpumpkammer 2 ist dichtend an der zylindrischen Innenwand anliegend ein Luftpumpkolben 4 angeordnet. Der Luftpumpkolben 4 ist ebenfalls zylindertopfformig ausgeformt und weist in Richtung auf den Betätigungskopf 5 zu stufenförmige Durchmesserverringerungen mit entsprechenden zylindrischen Wandabschnitten auf. In einer ersten Stufe 6 des Luftpumpkolbens 4 sind Belüftungslöcher 7 ausgebildet. Luftpumpkol- beninnenseitig ist an diesem Stufenabschnitt ein scheibenförmiges Ventil 16 derart befestigt, daß sich dessen Randbereiche bei entsprechener Druck- bzw. Vakuumbeaufschlagung in Richtung der Pfeile von den anliegenden Wand- und Flächenbereichen abheben können. Mit einer zweiten Stufe 8 liegt der Luftpumpkolben 4 in seiner dargestellten Ausgangslage an einer Innenwandfläche eines die Luftpumpkammer 2 haltend umfassenden Adapterelementes 9 an. Nach einer dritten Stufe 10 folgt ein zylindrischer Abschnitt des Luftpumpkolbens 4, der eine Mischkammer 11 umfaßt. In Richtung auf einen Schaumfuhrungskanal 12 zu ist die Mischkammer 11 von einem Wandabschnitt 13 mit zentral darin ausgebildeter Schaumerzeugungseinrichtung 14, in diesem Fall eine düsenartige Öffnung, abgeschlossen. Die Schaumerzeugungseinrichtung 14 kann aber auch aus einem Sieb oder zwei mit Abstand zueinander angeordneten Sieben bestehen. An die Schaumerzeugungseinrichtung 14 anschließend ist der Schauführungskanal 12 ausgebildet. Außenseitig umfaßt wird die von dem Luftpumpkolben 4 ausgebildete Mischkammer 11 von einem unteren zylinderförmigen Bereich des Betätigungskopfes 5, der niederdrückbar in einem zylindrischen Bereich des Adapters 9 angeordnet ist. Innenseitig liegt an der dritten Stufe 10 koaxial zu der Schaumerzeugungseinrichtung 14 ausgerichtet ein hohler Flüssigkeitspumpkolben 15 an, der mit seinem entgegengesetzten Ende in die zy- linderförmige Flüssigkeitspumpkammer 3 eintaucht. Im Bereich der ersten Stufe 6 des Luftpumpkolbens 4 weist der Flüssigkeitspumpkolben 15 sternförmige Flanschbereiche 17 auf, die mit ihrer äußeren Erstreckung bis in den Bereich der ersten Stufe 6 reichen und die flächig an dem Ringscheibenventil 16 anliegen, wenn sich die Schaumerzeugungsvorrichtung in der in der Figur dargestellten Ausgangsposition befindet. Außenseitig ist der Flüssigkeitspumpkolben 15 unterhalb der Flanschbereiche 17 von einer zweiten Feder 18 umgeben, die mit ihrem den Flanschbereichen 17 abgewandten Ende auf einem oberen Umfangsrand der Flüssigkeitspumpkammer 3 aufliegt, in welche der Flüssigkeitspumpkolben 15 eintaucht. Innerhalb der zylinderförmigen Flüssigkeitspumpkammer 3 ist eine erste Feder 19 angeordnet, die an einem ringförmigen Flanschende 20 eines hohlen, zylinderförmigen Flüssigkeitseintrittselementes 21 und dem in die Flüssigkeitspumpkammer 3 eintauchenden Endes des Flüssigkeitspumpkolbens 15 anliegt. Hierbei ist die erste Feder 19 bezüglich ihrer Länge und Federkraft derart dimensioniert, daß sie den Flüssigkeitspumpkolben 15 und damit auch die daran anliegenden Elemente Luftpumpkolben 4 und Betätigungskopf 5 in die in der Figur dargestellte Ausgangsposition bewegt und in dieser gegen die Schwerkraft hält. Sowohl bei der Feder 18 als auch bei der Feder 19 handelt es sich um eine Druckfeder innerhalb des hohlen Flüssigkeitspumpkolbens 15 ist eine innere Stange 22 angeordnet, die mit konischen Dichtflächen 23, die an entsprechend konischen Dichtflächen 24 des Flüssigkeitspumpkolbens 15 anliegen, den Innenraum des Flüssigkeitspumpkolbens 15 und der Flüssigkeitspumpkammer 3 gegenüber der Mischkammer 11 in der dargestellten Ausgangsposition der Schaumerzeugungsvorrichtung abdichten. Mit ihrem entgegengesetzten Ende taucht die Stange 22 in das hohle Flüssigkeitseintrittselement 21 ein, wobie die erste Feder 19 den weder in den Flüssigkeitspumpkolben 15 noch in das Flüssigkeitseintrittselement 21 eintauchenden Bereich umfaßt. Das der Flüssigkeitseintrittsöffnung 25 zugewandte Ende des zylinderförmigen Flüssigkeitseintrittselementes weist im unteren Randbereich seiner Seitenwandung schlitzförmige Öffnungen 26 auf. Im Übergangsbereich zwischen der Flüssigkeitseintrittsöffnung 25 und dem eine Stufe 27 für einen Anschlag des ringförmigen Flanschendes 20 ausbildenden Endes der Flüssigkeitspumpkammer 3 weist diese einen konischen Bereich 28 auf, der mittels darin angeordneter Kugel 29 als Rückschlagventil ausgebildet ist. An die Flüssigkeitseintrittsöffnung 25 ist ein nicht dargestelltes Steigrohr angeschlossen, das bis auf den Boden des die aufzuschäumende Flüssigkeit enthaltenden Behältnisses reicht. Der Betätigungskopf 5 weist einen rechtwinklig vom Schaumfuhrungskanal 12 abzweigenden Schaumaustrittskanal 30 auf. Dieser Schaumaustrittskanal 30 endet auslaßseitig in einem Abschnitt 31, der gegenüber dem Schaumaustrittskanal 30 um 65° (Winkel α) auswärts geneigt verläuft.In the single figure, this shows a foam generating device, generally designated 1, which, in the application, is arranged in the mouth of a bottle-like container (not shown) which contains the liquid to be foamed with the foam generating device 1, for example a washing lotion or an antimicrobial washing lotion. The foam generating device 1 has an air pumping chamber 2, which is formed in one piece with a liquid pumping chamber 3 arranged coaxially to it. The air pump chamber 2 is essentially shaped like a cylinder pot. In the air pump chamber 2, an air pump piston 4 is arranged sealingly against the cylindrical inner wall. The air pump piston 4 is also shaped like a cylinder pot and has step-like diameter reductions with corresponding cylindrical wall sections in the direction of the actuating head 5. In a first stage 6 of the air pump piston 4, ventilation holes 7 are formed. On the inside of the air pump piston, a disk-shaped valve 16 is fastened to this step section in such a way that its edge areas can be lifted off from the adjacent wall and surface areas in the direction of the arrows when the pressure or vacuum is applied accordingly. With a second stage 8, the air pump piston 4 lies in its illustrated starting position on an inner wall surface of an adapter element 9 holding the air pump chamber 2. A third stage 10 is followed by a cylindrical section of the air pump piston 4, which comprises a mixing chamber 11. In the direction of a foam guide channel 12, the mixing chamber 11 is closed off by a wall section 13 with a foam generating device 14 formed centrally therein, in this case a nozzle-like opening. The foam generating device 14 can also consist of a sieve or two sieves arranged at a distance from one another. The display guide channel 12 is formed on the foam generating device 14. On the outside, the mixing chamber 11 formed by the air pump piston 4 is encompassed by a lower cylindrical region of the actuating head 5, which is arranged in a depressible manner in a cylindrical region of the adapter 9. On the inside, at the third stage 10, there is a hollow liquid pump piston 15 which is aligned coaxially with the foam generating device 14 and which has its opposite end in the zy- Linden-shaped liquid pump chamber 3 is immersed. In the area of the first stage 6 of the air pump piston 4, the liquid pump piston 15 has star-shaped flange regions 17 which extend with their outer extent into the region of the first stage 6 and which lie flat against the annular disk valve 16 when the foam generating device in the figure shown starting position is. On the outside, the liquid pump piston 15 is surrounded below the flange regions 17 by a second spring 18, which, with its end facing away from the flange regions 17, rests on an upper peripheral edge of the liquid pump chamber 3 into which the liquid pump piston 15 is immersed. Arranged within the cylindrical liquid pump chamber 3 is a first spring 19 which bears against an annular flange end 20 of a hollow, cylindrical liquid inlet element 21 and the end of the liquid pump piston 15 which plunges into the liquid pump chamber 3. Here, the first spring 19 is dimensioned with respect to its length and spring force in such a way that it moves the liquid pump piston 15 and thus also the elements air pump piston 4 and actuating head 5 lying against it into the starting position shown in the figure and holds it against gravity. Both the spring 18 and the spring 19 are a compression spring inside the hollow liquid pump piston 15, an inner rod 22 is arranged, which with conical sealing surfaces 23, which abut correspondingly conical sealing surfaces 24 of the liquid pump piston 15, the interior of the liquid pump piston 15 and the liquid pumping chamber 3 against the mixing chamber 11 in the illustrated starting position of the foam generating device. With its opposite end, the rod 22 is immersed in the hollow liquid inlet element 21, the first spring 19 encompassing the area neither immersed in the liquid pump piston 15 nor in the liquid inlet element 21. The end of the cylindrical liquid inlet element facing the liquid inlet opening 25 has slot-shaped openings 26 in the lower edge region of its side wall. In the transition region between the liquid inlet opening 25 and the end of the liquid pumping chamber 3 which forms a step 27 for a stop of the annular flange end 20, the liquid pump chamber 3 has a conical region 28 which is designed as a check valve by means of a ball 29 arranged therein. A riser pipe, not shown, is connected to the liquid inlet opening 25 and extends to the bottom of the container containing the liquid to be foamed. The actuating head 5 has a foam outlet channel 30 branching off at a right angle from the foam guide channel 12. This foam outlet channel 30 ends on the outlet side in a section 31 which extends outward at 65 ° (angle α) with respect to the foam outlet channel 30.
Das Adapterelement 9 weist einen zylinderförmigen Abschnitt 32 auf, dessen Wand dichtend in die Mündung des nicht dargestellten, die aufzuschäumende Flüssigkeit enthaltenden Behältnisses eingreift und an dieser anliegt. In diesem Bereich kann auch ein Gewinde vorgesehen sein, so daß die dargestellte Vorrichtung und das Behältnis zum Wiederbefüllen des Behältnisses voneinander getrennt werden können. Weiterhin weist die Schaumerzeugungsvorrichtung 1 Haltearme oder Halteelemente 33, 34 auf, mit Hilfe welcher sie an einer Einarm- oder Einhebel- Wandspender- Vorrichtung zu befestigen ist.The adapter element 9 has a cylindrical section 32, the wall of which engages in a sealing manner in the mouth of the container (not shown) containing the liquid to be foamed and bears against it. A thread can also be provided in this area, so that the device shown and the container for refilling the container can be separated from one another. Furthermore, the foam generating device 1 has holding arms or holding elements 33, 34, with the aid of which it is to be attached to a single-arm or single-lever wall dispenser device.
Zur Abgabe von Schaum wird der Betätigungskopf 5 in Richtung des Pfeiles 35 niedergedrückt. Durch kraftschlüssige Übertragung an der dritten Stufe 10 wird diese Bewegung auf den Luftpumpkolben 4 und den Flüssigkeitspumpkolben 15, der innenseitig an der dritten Stufe 10 und/oder durch unmittelbare Anlage an dem Ventil 16 an der ersten Stufe 6 anliegt, übertragen. Bei Betätigung des Betätigungskopfes 5 in Richtung des Pfeiles 35 bewegt sich somit der Flüssigkeitspumpkolben 15 in die Flüssigkeitspumpkammer 3 hinein, wobei die konischen Dichtflächen 23 und 24 eine ringförmige Flüssig- keitsdurchtrittsöffnung in die Mischkammer 11 freigeben. Dadurch, daß der Flüssigkeitspumpkolben 15 in die Flüssigkeitspumpkammer 3 eintaucht, und aufgrund der damit auf die in der Flüssigkeitspumpkammer 3 befindliche Flüssigkeit ausgeübten Druckes, wird die Kugel 29 in die gezeigte Verschlußstellung gepreßt und die in der Flüssigkeitspumpkammer 3 enthaltene Flüssigkeit in die Mischkammer 11 gefördert. Gleichzeitig wird aber auch durch die Bewegung des Luftpumpkolbens 4 die in der Luftpumpkammer 2 befindliche Luft komprimiert und aufgrund des erhöhten Druckes das Ventil 16 im Bereich der sternförmigen Flanschbereiche 17 in Richtung der dortigen Pfeile leicht umgebogen, so daß gleichzeitig Luft in die Mischkammer 11 gefördert wird. Zu diesem Zeitpunkt liegt der Flüssigkeitspumpkolben 15 nicht mehr an der Stufe 10 an. Das gleichzeitige Eintreten von Flüssigkeit und Luft in die Mischkammer 11 und deren Transport durch die Schaumerzeugungseinrichtung 14 führen dazu, daß sich im Schaumfuhrungskanal 12 Schaum bildet. Dieser wird aufgrund des durch die Flüssigkeit und die Luft bei der entsprechenden Bewegung der Kolben erzeugten Druckes durch den Schaumaustrittskanal 13 und dessen Endabschnitt 31 aus der Schaumerzeugungsvorrichtung herausgeführt.To release foam, the actuating head 5 is depressed in the direction of arrow 35. This movement is transmitted to the air pump piston 4 and the liquid pump piston 15, which rests on the inside at the third stage 10 and / or by direct contact with the valve 16 at the first stage 6, by non-positive transmission at the third stage 10. When the actuating head 5 is actuated in the direction of the arrow 35, the liquid pump piston 15 thus moves into the liquid pump chamber 3, the conical sealing surfaces 23 and 24 opening an annular liquid passage opening into the mixing chamber 11. Characterized in that the liquid pump piston 15 is immersed in the liquid pump chamber 3, and because of the pressure thus exerted on the liquid in the liquid pump chamber 3, the ball 29 is pressed into the closed position shown and the liquid contained in the liquid pump chamber 3 is conveyed into the mixing chamber 11. At the same time, however, the air in the air pump chamber 2 is compressed by the movement of the air pump piston 4 and, due to the increased pressure, the valve 16 in the region of the star-shaped flange regions 17 is slightly bent in the direction of the arrows there, so that air is simultaneously conveyed into the mixing chamber 11 , At this time, the liquid pump piston 15 is no longer in contact with the stage 10. The simultaneous entry of liquid and air into the mixing chamber 11 and their transport by the foam generating device 14 lead to the formation of 12 foam in the foam guide channel. Because of the pressure generated by the liquid and the air during the corresponding movement of the pistons, this is led out of the foam generating device through the foam outlet channel 13 and its end section 31.
Wird dann der Betätigungskopf 5 wieder losgelassen, treiben die erste Feder 19 und die zweite Feder 18 den Flüssigkeitspumpkolben 15 und den Luftpumpkolben 4 wieder in die in der Figur dargestellte Ausgangsstellung. Bei diesem Vorgang bildet sich in der Luftpumpkammer 2 ein Vakuum, das bewirkt, daß sich das Ventil 16 im Bereich der Belüftungslöcher 7 von diesen in Richtung der Pfeile weg bewegt und damit eine Belüftung der Luftpumpkammer 2 erfolgt. Gleichzeitig wird durch die Bewegung des Flüssigkeitspumpkolbens 15 in der Flüssigkeitspumpkammer 3 ein Unterdruck erzeugt, aufgrund dessen sich die Kugel 29 aus der Verschlußposition nach oben bewegt und Flüssigkeit durch die Flüssigkeitseintrittsöffnung 25 angesaugt wird, die aufgrund der schlitzförmigen Öffnungen 26 die Möglichkeit hat, die Kugel 29 zu umströmen.If the actuating head 5 is then released again, the first spring 19 and the second spring 18 drive the liquid pump piston 15 and the air pump piston 4 again into the starting position shown in the figure. During this process, a vacuum is formed in the air pump chamber 2, which causes the valve 16 in the area of the ventilation holes 7 to move away from them in the direction of the arrows, and thus the air pump chamber 2 is vented. At the same time, due to the movement of the liquid pump piston 15 in the liquid pump chamber 3, a negative pressure is generated, due to which the ball 29 moves upward from the closed position and liquid is sucked in through the liquid inlet opening 25, which, due to the slit-shaped openings 26, has the possibility of the ball 29 to flow around.
Bei der zweiten Druckfeder 18 handelt es sich um eine aus nichtrostendem Edelstahl bestehende Feder mit einer Federkraft von ca. 10 N. Diese Feder bewirkt, daß die Schaumerzeugungsvorrichtung 1 auch einen nicht dargestellten, am Betätigungskopf 5 anliegenden Betätigungshebel oder Betätigungsarm eines Wandspenders gegen dessen Schwerkraft in die Ausgangslage zurückbewegen kann.The second compression spring 18 is a spring made of stainless steel with a spring force of approx. 10 N. This spring causes the foam generating device 1 to also have an actuating lever or actuating arm of a wall dispenser, not shown, resting against the actuating head 5 against its gravity can move back the starting position.
Am auslaßseitigen Ende des Abschnittes 31 ist die Wand des Schaumaustrittkanales mit einer Fase 36 versehen. Hierdurch wird eine Abschrägung ausgebildet, so daß sich an dieser Stelle nur eine geringe Fläche befindet, an welcher sich Schaumreste absetzen könnten, die zu einer Verschmutzung oder Schaumnasenbildung führen könnten. At the outlet end of section 31, the wall of the foam outlet channel is provided with a chamfer 36. As a result, a bevel is formed so that there is only a small area at this point where foam residues could settle, which could lead to soiling or foam noses.

Claims

Patentansprüche claims
1. Schaumerzeugungs Vorrichtung (1) mit einer Luftpumpkammer (2), einer Flüssigkeit- spumpkammer (3), einer mit beiden Kammern (2, 3) mittels Ventilen (16; 23, 24) in Strömungsverbindung bringbaren Mischkammer (11) mit Schaumer-zeugungs- einrichtung (14) und daran angeschlossenem Betätigungskopf (5) mit Schaumfuhrungskanal (12) und rechtwinklig davon abzweigendem Schaumaustrittskanal (30), wobei gegen die Kraft einer in der Flüssigkeitspumpkammer (3) angeordneten ersten Feder (19) durch Niederdrücken des Betätigungskopfes (5) ein in der Luftpumpkammer (2) geführter Luftpumpkolben (4) und ein in der Flüssigkeitspumpkammer (3) geführter hohler Flüssigkeitspumpkolben (15) bewegbar sind, dadurch gekennzeichnet, daß der Schaumaustrittskanal (30) auslaßseitig in einem um 55° bis 75°, vorzugsweise 65°, gegenüber dem Schaumaustrittskanal (30) auswärts geneigten Abschnitt (31) endet und daß an dem Flüssigkeitspumpkolben (15) eine zweite, zur ersten Feder (19) gleichgerichtet wirkende Feder (18) angreift.1. Foam generating device (1) with an air pumping chamber (2), a liquid pumping chamber (3), a mixing chamber (11) with foaming agent which can be brought into flow connection with both chambers (2, 3) by means of valves (16; 23, 24). Generation device (14) and connected actuating head (5) with foam guide channel (12) and foam outlet channel (30) branching off at right angles therefrom, against the force of a first spring (19) arranged in the liquid pumping chamber (3) by depressing the actuating head (5 ) an air pump piston (4) guided in the air pump chamber (2) and a hollow liquid pump piston (15) guided in the liquid pump chamber (3), characterized in that the foam outlet channel (30) on the outlet side is preferably at a temperature of 55 ° to 75 ° 65 °, with respect to the foam outlet channel (30) outwardly inclined section (31) ends and that on the liquid pumping piston (15) a second, aligned with the first spring (19) acting spring (18) attacks.
2. Schaumerzeugungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schaumerzeugungsvorrichtung (1) Bestandteil einer Einhebel- Wandspender- Vorrichtung ist.2. Foam generating device according to claim 1, characterized in that the foam generating device (1) is part of a single-lever wall dispenser device.
3. Verwendung einer Schaumerzeugungsvorrichtung (1) nach Anspruch 1 oder 2 zur Schaumerzeugung aus einer flüssigen Waschlotion oder flüssigen antimikrobiellen Waschlotion in einer Einhebel- Wandspender- Vorrichtung. 3. Use of a foam generating device (1) according to claim 1 or 2 for generating foam from a liquid washing lotion or liquid antimicrobial washing lotion in a single-lever wall dispenser device.
PCT/EP2000/010072 1999-10-22 2000-10-13 Foam dispenser WO2001030508A1 (en)

Applications Claiming Priority (2)

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DE19951011.3 1999-10-22
DE19951011A DE19951011C2 (en) 1999-10-22 1999-10-22 foam dispenser

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DE102005053529A1 (en) 2005-11-08 2007-06-21 Henkel Kgaa System for the enzymatic generation of hydrogen peroxide
KR102479409B1 (en) * 2021-01-21 2022-12-19 엘지전자 주식회사 Water purifier

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US8955719B2 (en) 2010-10-26 2015-02-17 Reckitt Benckiser Llc Foaming liquid dispenser

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DE19951011C2 (en) 2003-02-27

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