EP0379818B1 - Vorrichtung zur Erzeugung von Schaum - Google Patents

Vorrichtung zur Erzeugung von Schaum Download PDF

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Publication number
EP0379818B1
EP0379818B1 EP89403574A EP89403574A EP0379818B1 EP 0379818 B1 EP0379818 B1 EP 0379818B1 EP 89403574 A EP89403574 A EP 89403574A EP 89403574 A EP89403574 A EP 89403574A EP 0379818 B1 EP0379818 B1 EP 0379818B1
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EP
European Patent Office
Prior art keywords
chamber
liquid
duct
container
porous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89403574A
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English (en)
French (fr)
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EP0379818A1 (de
Inventor
Francis Poizot
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Individual
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Individual
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Publication date
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Priority to AT89403574T priority Critical patent/ATE93416T1/de
Publication of EP0379818A1 publication Critical patent/EP0379818A1/de
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Publication of EP0379818B1 publication Critical patent/EP0379818B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B05B7/005—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 wherein ambient air is aspirated by a liquid flow
    • B05B7/0056—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 wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0062—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 wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • 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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/22—Spouts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • 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
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/042—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube
    • B05B11/043—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube designed for spraying a liquid
    • 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
    • B05B11/1098—Air being permanently entrapped or sucked into the liquid pump chamber
    • 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
    • B05B7/0037—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 including sieves, porous members or the like

Definitions

  • the invention relates to a device to be incorporated in a liquid dispensing apparatus, in order to dispense this liquid in the foam state.
  • foaming devices are known and they generally comprise a member for dividing the liquid flow and an air intake.
  • these devices especially when they are intended for devices actuated by hand without auxiliary engine gas, such as soap dispensers, shampoo, various household or cosmetic products, have drawbacks.
  • the liquid ejection means generate a pulsed flow, for example in the case of an alternative positive displacement pump or compression / decompression of a deformable wall of the container.
  • Known foaming devices are sensitive to these variations in flow rate and this causes variations in the quality of the foam, depending on the stroke and the rate of operation of said ejection means.
  • the foam is often nonexistent during the first pulsations, due to defusing when stopped.
  • Other devices foaming elements include movable elements, such as balls or valves of various shapes, but this increases the price and the risk of malfunction.
  • the present invention avoids, in a new way, the various above drawbacks.
  • the subject of the invention is therefore a foam-forming device, mainly for a dispensing device, the liquid ejection means of which can be actuated by hand, which ensures immediate production of foam of constant and excellent quality, while being of very simple and economic construction.
  • the invention also relates to a foaming device which is easily incorporated directly on the liquid conduit of a liquid distributor of any known type.
  • Another subject of the invention is a foaming device which does not require a movable element, and which even makes it possible to remove the movable valve of the dispensing device, if the latter has any, without the result of defusing. no leaks or drips outside.
  • the foaming device is of the type where, in a container for the liquid to be foamed, a liquid conduit serves to bring it into a porous material to which, at the same time, the air , and the foam formed is discharged at the head of the container, downstream of the porous material; it is characterized as is apparent from claim 1 appended.
  • document FR-A-2 323 438 discloses an elongated spiral chamber through which the liquid passes, and the porous walls of which allow air to pass. This provision, the principle of which is contrary to that of the invention does not allow the device to operate in all positions, in particular in the inverted position.
  • the ratio of the sections of the liquid conduit and of said chamber can be chosen between very low limits. wide.
  • the cross section of the chamber can be, for example, equal to 1 to 200 times that of the liquid supply duct; it is most often 5 to 30 times that of the duct.
  • the diameter D of the chamber can represent 1 to 30 times the diameter of the duct which it extends; very often the D / d ratio is around 2 to 6, especially for small devices.
  • the container of the device according to the invention may comprise several liquid conduits and / or several foaming chambers divided into compartments.
  • a single branched conduit can supply liquid to several chambers, arranged for example radially around the vertical axis of the container; or a large diameter chamber can receive the liquid to be frothed from several liquid supply conduits.
  • Such multiple arrangements are related to blockage incidents, thus ensuring more regular work.
  • the cross-sections of the foaming chamber or chambers, and of the liquid duct (s), have no particular limits in absolute values; indeed, if chambers of a section of the order from 10 to 1000 mm2 suitable for small foam devices, including pocket devices, chambers of large industrial devices, for the production of large quantities of foam, can have a section of 1 m2 or more. For example, chambers of approximately 176 to 625 cm2 in cross-section, or 15 to 50 cm in diameter, are suitable for producing foam for extinguishing fires.
  • the communication of the foaming chamber with the atmosphere or with a reserve of air, or - if necessary - of another gas can be established by any means known in the art. This can be achieved in particular by one or more orifices made in the wall of the chamber, when the latter is in the gas phase of the container which contains it. Communication with the air can also be established by means of one or more pipes connecting the interior of the chamber with the source of air or of the other gas.
  • one embodiment of the invention consists in using a bottle of liquefied CO2 as a source of gas.
  • the porous or multi-perforated partitions dividing the interior space of the foaming chamber into several compartments, can be placed horizontally or obliquely with respect to the vertical axis of the chamber; they have, for example a thickness of 0.05 to 5mm, preferably from 0.1 to 2mm.
  • the device of the invention Among the many materials with pores or channels, well known in the industry and used as filters or distributors of gas or liquid, we choose - for the device of the invention - those which are most suitable for the preparation of a foam. given. There is a wide choice between metallic, textile, plastic, cellulosic, glass or porcelain fabrics and screens. If the metal sieves are preferred, thanks to their mechanical strength, for high flow rates of foam, possibly under higher or lower pressures, porous partitions made of plastics, textiles, in particular cellulosics, are generally suitable for small or medium devices , especially for household and toilet use.
  • the passages or pores of the partitions are small enough for the effect of capillarity or surface tension of the liquid to prevent defusing of the duct and external drainage when stopped.
  • these pores or channels, in the partitions used play a role in obtaining a foam of desired quality.
  • the size of these passages, or openings of the mesh of the sieves varies widely, for example from about 10 micrometers to beyond 250 ⁇ m, and the partitions most often have passages or openings of about 50 to 150 ⁇ m.
  • the dimensions of the pores or passages are chosen the larger the higher the viscosity of the liquid used. Excellent results are obtained in small toilet appliances with pores of about 80 to 120 ⁇ m.
  • the refinement of a foam, its "drying” or, on the contrary, “wetting”, are carried out by the use of partitions of fineness of different pores or channels.
  • partitions of fineness of different pores or channels are carried out by the use of partitions of fineness of different pores or channels.
  • first partition with relatively wide openings, for example of the order of 120 ⁇ m, a second at approximately 90 ⁇ m and a third not exceeding 70 ⁇ m.
  • the surfactants used, and the quality of the foam desired it may be advantageous to have the finest pores in the first partition and larger and larger in the following.
  • the device according to the invention comprises several transverse partitions, dividing the chamber into more than 2 compartments, the communication with the air or gas source must be established so as to have a pressure balance in all the compartments. For this, one, several or all of these compartments are connected to the gas phase of the device.
  • the container of the device of the invention is connected to a reservoir from which it is continuously supplied with liquid. or intermittent.
  • Figure 1 shows a container or bottle with a deformable wall 1, containing a liquid 2 such as soap, shampoo, cleaning product or other, having surface tension characteristics which allow it to foam.
  • a liquid 2 such as soap, shampoo, cleaning product or other
  • the compression of the wall drives out a certain quantity of liquid outside, via a conduit 3, and the relaxation of the wall causes a return of air to replace the expelled liquid.
  • a foaming device according to the invention is interposed on the conduit, below the cap of the container.
  • This device comprises a chamber 4, of cross section larger than that of the conduit, divided into three compartments 5, 6 and 7 by two transverse partitions 8.
  • the wall of the chamber 4 is pierced with a small hole 9 which communicates with the air space at the top of the container.
  • the partitions 8 are constituted by a sieve or by a porous membrane, in any material suitable for the liquid dispensed.
  • the orifices or pores of the partitions have a unit size such that the expelled liquid is finely divided and forms a very stable foam with the air which at the same time enters the compartment 7 through the orifice 9.
  • this dimension elementary passages is small enough so that, by surface tension effect, the foam formed is substantially retained on the partition and therefore in compartment 6, when the container is decompressed, so that the device rapidly supplies foam, during the next use, even after a prolonged stop. This is very advantageous both from the point of view of user convenience and from the economic point of view.
  • the total passage section of the partition is determined as a function of the average flow rate to be obtained. If the flow tends to increase, for example because the wall 1 is too suddenly deformed, the pressure drop of the small orifices increases very quickly and limits the maximum flow of liquid, so that the foam remains of substantially constant quality, this which is another advantage of the device.
  • the transverse partition 8 was a sheet of non-woven cellulose fibers, with passages of 95 ⁇ m, and the cross section of the chamber 4 was approximately 20 times that of the conduit 3. Thickness of the sheet 0.12 mm.
  • FIG. 2 and 3 illustrate advantageous embodiments of the device according to the invention.
  • the partitions are constituted by a strip 10 folded in an accordion, which defines a plurality of successive compartments and facilitates the installation and maintenance of the partitions.
  • FIG. 3 illustrates a very simple embodiment of the device, in which the chamber 4 is defined by cutting the tube 3, spacing the ends of this tube and connecting the two parts by a tube 4 whose internal diameter corresponds to the external diameter of the tube 3 and in which the partitions 8 have been embedded.
  • FIG. 4 illustrates the adaptation of the device according to the invention to a container with a non-deformable wall but provided with a hand pump.
  • the pump body itself constitutes a chamber 11 provided with an air intake 9 and it suffices to insert the perforated or porous partitions 8 at the inlet of the pump body.
  • the presence of the partitions also makes it possible, if desired, to remove a ball or a pump valve, which is an additional advantage of the device in this case.
  • the transverse partitions of the devices described can be constituted by a sieve or a porous element, having an orifice or pore size of the order of 100 ⁇ m, in particular from 80 to 120 ⁇ m.
  • the cross section of the chamber 4 is preferably between 5 and 30 times that of the conduit 3.
  • the device according to the invention is placed inside or outside the device; the chamber is added (4) or pre-existing (11,11 ') in the device, the air intake 9 is also created or pre-existing. It can also include several successive chambers.
  • the device In the application of the device according to the invention to a compressible dispensing bottle, the device is placed on the upper part of the plunger, inside the bottle, at the base of the stopper, the movement of the liquid being created by pressure on the bottle. If the device is applied to an incompressible container, fitted with a pump, it is placed at the suction and / or delivery of the pump, the chamber of the device being formed by the pump body and / or the nozzle of the pump outlet; the porous partition then preferably also fulfills the function of the pump valve.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Closures For Containers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Braking Arrangements (AREA)
  • Nozzles (AREA)
  • Window Of Vehicle (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Seal Device For Vehicle (AREA)

Claims (11)

  1. Vorrichtung zur Bildung von Schäumen, die umfaßt einen Behälter (1) für die aufzuschäumende Flüssigkeit (2), eine Flüssigkeitsleitung (3), die dazu dient, diese in einen porösen Stoff (8) zu leiten, in den gleichzeitig Luft gelangt, wobei er gebildete Schaum am Kopfende des Behälters abgenommen wird, dadurch gekennzeichnet, daß die Flüssigkeitsleitung (3) in Richtung der Auslaßöffnung des Behälters (1) mittels einer Kammer (4) verlängert wird, die durch zwei oder mehrere, zu der genannten Leitung (3) querliegende Zwischenwände in mehrere geschlossene Abteile (6) unterteilt ist, wobei diese Zwischenwände aus einem porösen Stoff bestehen oder feine Durchlöcherungen aufweisen, die Kammer (4) auf einem verlängerten und unabhängigen Weg der Leitung (3) in Verbindung steht mit der Luft der Atmosphäre (9) oder mit einem Vorrat an Luft oder einem anderen Gas, wobei ausgeschlossen ist, daß die Kammer (4) eine langgestreckte spiralförmige Kammer ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Poren oder feinen Durchlöcherungen der querliegenden Zwischenwände (8) eine einheitliche Größe aufweisen, die ausreichend klein ist, um merklich zu verhindern, daß die Flüssigkeit durch die Schwerkraft zurückläuft und Kammer und Leitung zwischen zwei aufeinanderfolgenden Anwendungen entleert werden.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die querliegenden Zwischenwände aus einem Sieb oder porösen Element bestehen, welches eine Öffnungs- oder Porenausdehnung in der Größenordnung von 10 bis 250 µm, vorzugsweise 50 bis 150 µm, und eine Dicke von 0,05 bis 5 mm, vorzugsweise 0,1 bis 2 mm, aufweist.
  4. Vorrichtung nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet daß sie mehrere Zwischenwände umfaßt, die gebildet werden durch Falten eines perforierten oder porösen Bandes (10) wie eine Ziehharmonika im Inneren der Kammer (4).
  5. Vorrichtung nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, daß der Querschnitt der Kammer (4) zwischen 1 und 200 mal, insbesondere zwischen 5 und 30 mal, jenen des Leitungsrohres (3) enthält.
  6. Vorrichtung nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, daß sie innerhalb oder außerhalb eines Gerätes angeordnet ist, wobei die Kammer hinzugefügt wird (4) oder bereits in dem Gerät vorhanden ist (11, 11') und ein oder mehrere Luftlöcher (9) geschaffen werden oder bereits vorhanden sind.
  7. Vorrichtung nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, daß es mehrere Aufblähkammern (4) aufweist.
  8. Vorrichtung nach einem der vorausgegangenen Ansprüche, die mehrere Zwischenwände (8) umfaßt, die in der Kammer (4) mehrerer Abteile (5, 6, 7) abgrenzen, dadurch gekennzeichnet, daß die Ausdehnungen der Poren oder Durchlässe von einer Trennwand zur anderen variieren.
  9. Vorrichtung nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, daß es Mittel umfaßt zur kontinuierlichen oder unterbrochenen Zufuhr der aufzuschäumenden Flüssigkeit aus Behälter (1).
  10. Vorrichtung nach einem der Ansprüche 1 bis 9, umfassend einen komprimierbaren Verteilungskolben, dadurch gekennzeichnet daß die Kammer (4) am oberen Teil des Flüssigkeitsleitungsrohres (3) im Inneren des Kolbens, unterhalb des Stopfens angebracht ist, wobei die Bewegung der Flüssigkeit durch Druck auf den Kolben erzeugt wird.
  11. Vorrichtung nach einem der Ansprüche 1 bis 9, umfassend einen nicht komprimierbaren Behälter, der mit einer Pumpe ausgestattet ist, dadurch gekennzeichnet, daß die Kammer (11) zum Ansaugen, zum Verdrängen von der Pumpe, angebracht ist oder daß sie gebildet wird durch den Körper der Pumpe selbst und/oder durch Hinzufügen des Ausgangs (11') von der Pumpe.
EP89403574A 1989-01-03 1989-12-20 Vorrichtung zur Erzeugung von Schaum Expired - Lifetime EP0379818B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89403574T ATE93416T1 (de) 1989-01-03 1989-12-20 Vorrichtung zur erzeugung von schaum.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8900016 1989-01-03
FR8900016A FR2641202B1 (fr) 1989-01-03 1989-01-03 Dispositif de production de mousse

Publications (2)

Publication Number Publication Date
EP0379818A1 EP0379818A1 (de) 1990-08-01
EP0379818B1 true EP0379818B1 (de) 1993-08-25

Family

ID=9377441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403574A Expired - Lifetime EP0379818B1 (de) 1989-01-03 1989-12-20 Vorrichtung zur Erzeugung von Schaum

Country Status (11)

Country Link
US (1) US5071379A (de)
EP (1) EP0379818B1 (de)
JP (1) JPH02237671A (de)
KR (1) KR900011425A (de)
AT (1) ATE93416T1 (de)
AU (1) AU623537B2 (de)
DE (1) DE68908688T2 (de)
DK (1) DK690A (de)
FR (1) FR2641202B1 (de)
NZ (1) NZ231977A (de)
PT (1) PT92774A (de)

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BRPI0622150A2 (pt) * 2006-10-10 2013-09-17 Gerard Sannier dispositivo de adaptaÇço das bombas nço especÍficas para a produÇço de espuma
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FR2960166B1 (fr) * 2010-05-18 2014-07-11 Gerard Sannier Dispositif de production de creme de mousse
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Also Published As

Publication number Publication date
US5071379A (en) 1991-12-10
DK690A (da) 1990-07-04
DE68908688T2 (de) 1994-03-24
AU623537B2 (en) 1992-05-14
DE68908688D1 (de) 1993-09-30
ATE93416T1 (de) 1993-09-15
EP0379818A1 (de) 1990-08-01
AU5785590A (en) 1992-01-02
FR2641202A1 (fr) 1990-07-06
DK690D0 (da) 1990-01-03
NZ231977A (en) 1992-02-25
JPH02237671A (ja) 1990-09-20
KR900011425A (ko) 1990-08-01
PT92774A (pt) 1990-07-31
FR2641202B1 (fr) 1991-03-15

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