WO2005107541A1 - Device for generating at least one beverage jet and a beverage dispenser provided with said device - Google Patents

Device for generating at least one beverage jet and a beverage dispenser provided with said device Download PDF

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Publication number
WO2005107541A1
WO2005107541A1 PCT/CH2005/000244 CH2005000244W WO2005107541A1 WO 2005107541 A1 WO2005107541 A1 WO 2005107541A1 CH 2005000244 W CH2005000244 W CH 2005000244W WO 2005107541 A1 WO2005107541 A1 WO 2005107541A1
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WO
WIPO (PCT)
Prior art keywords
infusion
jet
solution
generator
side wall
Prior art date
Application number
PCT/CH2005/000244
Other languages
French (fr)
Other versions
WO2005107541A8 (en
Inventor
Jean-Luc Thuliez
Original Assignee
Domteknika S.A.
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 Domteknika S.A. filed Critical Domteknika S.A.
Priority to EP05733284A priority Critical patent/EP1744653B1/en
Priority to DE602005003120T priority patent/DE602005003120T2/en
Publication of WO2005107541A1 publication Critical patent/WO2005107541A1/en
Publication of WO2005107541A8 publication Critical patent/WO2005107541A8/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/06—Filters or strainers for coffee or tea makers ; Holders therefor
    • A47J31/0657—Filters or strainers for coffee or tea makers ; Holders therefor for brewing coffee under pressure, e.g. for espresso machines
    • A47J31/0668—Filters or strainers for coffee or tea makers ; Holders therefor for brewing coffee under pressure, e.g. for espresso machines specially adapted for cartridges
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/4496—Means to produce beverage with a layer on top, e.g. of cream, foam or froth

Definitions

  • the present invention relates to a device generating at least one jet of a drink, in particular a hot drink, comprising a unit for producing pressurized water, a support arranged to carry a pouch permeable to this water, containing a substance to be infused or dissolved to produce an infusion or a solution of this substance during the passage of pressurized water through this pouch, a collector of this infusion or this pressurized solution and means for propelling this infusion or this solution in a container.
  • It also relates to a drink dispenser, in particular a hot drink, equipped with this device.
  • the object of the invention is to provide a simple device capable of generating a jet of liquid, in particular an infusion, for example an infusion of coffee or tea, but also a solution, for example cocoa, chocolate, milk powder or any liquid or powdery preparation soluble in water, having a frothy appearance, leaving no residue and making it possible to produce, without any adaptation or intermediate cleaning, various hot or cold drinks.
  • a jet of liquid in particular an infusion, for example an infusion of coffee or tea
  • a solution for example cocoa, chocolate, milk powder or any liquid or powdery preparation soluble in water, having a frothy appearance, leaving no residue and making it possible to produce, without any adaptation or intermediate cleaning, various hot or cold drinks.
  • a device as defined in the preamble and characterized in that it comprises a generator of at least one cyclonic jet interposed between said collector of this infusion or this solution and said means for discharging this infusion or this solution directly into a container.
  • said generator of at least one cyclonic jet comprises an at least partially cylindrical central cavity delimited by a side wall and a bottom, the side wall defining at least one passage for a pressurized jet of this infusion or of this solution penetrating into said cavity, this passage being oriented towards the side of the side wall opposite to that where it is located to generate said cyclonic jet.
  • the water pressure is at least substantially equal to 0.5 bar.
  • said bottom of the central cavity is provided with a substantially central circular opening to release said cyclonic jet towards said means for pouring this infusion or this solution into a container.
  • said circular central opening of the at least partially cylindrical cavity is arranged to release said cyclonic jet at an opening angle substantially between 60 and 150 degrees and preferably close to 120 degrees.
  • said means for pouring this infusion or this solution into a container comprises a substantially cylindrical nozzle having a side wall arranged to reflect said cyclonic jet at the outlet of said circular central opening.
  • the length of said nozzle is arranged so that said cyclonic jet is reflected at least once before discharging into said container.
  • the length of said nozzle is defined as a function of the number of reflections desired from the cyclonic jet, this number of reflections being determined from the size of the foam bubbles desired.
  • said passage in the side wall of the generator arranged to generate said cyclonic jet has a longitudinal axis substantially parallel to the axis of said circular central opening.
  • said passage in the side wall of the generator arranged to generate said cyclonic jet has a longitudinal axis forming an acute angle with the axis of said circular central opening.
  • said side wall of the generator arranged to generate said cyclonic jet defines at least two opposite passages for two jets under pressure of this infusion or of this solution, these two jets being substantially opposite and penetrating into said central cavity, each of these passages being oriented towards the side opposite to the side of the side wall in which it is formed to combine its effect with that of the other passage and generate said cyclonic jet.
  • Each of the two substantially opposite jets generated by the opposite passages is preferably oriented towards the side opposite the side of the side wall from which it is generated at an acute angle, the side wall of said at least partially cylindrical cavity being arranged to reflect said jets substantially opposite in a substantially symmetrical manner relative to said substantially central opening formed in the bottom of said part provided with said central cavity.
  • the generator of at least one cyclonic jet is mounted under said support of said pouch containing a substance to be infused or dissolved, this support comprising a cylindrical core which is partially engaged in this central cavity while providing at least two passages in the side wall of said generator, these passages being substantially symmetrical with respect to said circular central opening and communicating on the one hand with at least one orifice formed in said infusion or solution collector and on the other hand share respectively with at least two channels formed in said bottom of the generator and opening into said circular central cavity.
  • the bottom of the support of the pouch to be infused is made of an elastic material deformable under the pressure applied to said pouch during infusion.
  • FIG. 1 is a sectional view showing a preferred embodiment of the device according to the invention
  • FIG. 2 is a perspective view, partially cut away, representing the device of FIG. 1
  • FIG. 3 is a partial view in section of the device according to the invention
  • FIG. 4 is a partial top view of the device according to the invention as shown in FIG. 1, and Figures 5 to 7 illustrate different embodiments of the cyclonic jet generator of the device according to the invention.
  • This device 10 essentially comprises a support 11 arranged to carry a pouch 12 made of two sheets of a material permeable to water, welded around their periphery and containing a substance to be infused or dissolved, such as coffee powder, tea, milk powder, chocolate powder or solution, soup or the like.
  • This support 11 is made of an elastic material and its bottom 13 has a thickness such that it can deform under the action of a minimum pressure substantially equal to 0.5 bar and return to its initial shape when this pressure does not is no longer applied.
  • a cover 14 is placed on the support 11, tightened against the edge 15 of said support by means of an annular seal 16.
  • said pocket 12 is enclosed within a closed communicating space with a pressurized water inlet 17 arranged in the center of the cover 14 and with a collector 18 arranged to recover the infusion or the solution after the water has passed through the pouch 12.
  • the collector 18 is integral with the support 11 and constitutes the part central of this support. This collector could be a separate room and fulfill the same functions.
  • the manifold 18 is provided with a set of holes 19, for example arranged in a circle, as shown in FIG. 4, where the number of holes is six, regularly arranged around the center of the support 11.
  • the device 10 also comprises a generator 20 of at least one cyclonic jet of liquid, illustrated in more detail in FIGS. 3 and 4, and making it possible to obtain a drink having a frothy appearance.
  • This generator 20 is interposed between said collector 18 of the infusion or the solution and means 21 for pouring this infusion or this solution into a container (not shown).
  • These means essentially consist of a nozzle 22 of cylindrical shape which is integral with an element 23 carrying the support 11 and centered relative to the latter.
  • the generator 20 includes a substantially cylindrical central cavity 24 in the bottom of which is formed a circular central opening 25 which emits a jet of the infusion or of the prepared solution having substantially a cone shape whose opening is between 60 and 150 degrees and around 120 degrees. This jet is reflected by the side wall of the nozzle 22 and finally flows through the outlet orifice 26 of this nozzle directly towards the container intended to receive the drink.
  • the support 11 of the pocket 12 has in its center a central core 30 which is partially engaged in the central cavity 24 of the generator 20.
  • the holes 19 of the manifold 18 are arranged in a circle around this central core and allow the flow of the infusion or solution to a space 31 ( Figure 3) delimited by the annular upper surface of the generator 20.
  • the generator 20 further comprises at least one lateral groove 32 defining a passage of the liquid in its side wall, whose axis longitudinal may be parallel to the axis of the circular central opening 25 or may form an acute angle with said axis. In the preferred embodiment illustrated more particularly in FIG.
  • the generator 20 has two lateral grooves 32 opening into two channels 33, substantially parallel to a diameter of the central cavity of the generator 20, formed in the bottom of said generator and bringing the infusion or solution in a space 34 for forming the cyclonic jet disposed between the bottom of said central cavity 24 and said central core 30 partially engaged in this cavity.
  • the two channels 33 are offset and respectively direct the corresponding jets towards the opposite walls so as to put the liquid in rotation and thus cause a cyclonic jet.
  • the turbulence of these jets causes a friction mixture of the infusion or the solution with air and generates a foam which will deposit on the surface in the receiving container.
  • Figures 5, 6 and 7 show alternative embodiments of the cyclonic jet generator 20 respectively in perspective, in cross section and in top view.
  • the generator 20 represented by FIG. 5 has a single lateral groove 50 which opens into a single channel 51 for bringing the infusion or the solution into the central cavity 52 of the generator, this channel being oriented along a radius of said cavity.
  • the jet of this infusion or this solution breaks on the side wall opposite the entrance to the channel 51 and forms a reflected jet which generates a vortex or cyclonic jet where the infusion or the solution is charged with air in the form of bubbles of very small dimensions which create a frothy mixture which will be evacuated through the central opening 25 opening into the nozzle of the means for pouring the beverage into a container.
  • the generator 20 has three channels 61 cooperating with three lateral grooves 60 formed in the side wall of the cavity 62 of the generator 20.
  • the jets of this infusion or this solution are reflected on the opposite side walls and generate a vortex or cyclonic jet where the infusion or solution is charged with air in the form of bubbles of very small dimensions which creates a frothy mixture which will be evacuated through the central opening 25.
  • FIG. 7 illustrates an alternative embodiment in which the generator 20 has only two lateral grooves 70 disposed at each of the ends with a diameter of the central cavity 71.
  • the bottom of this cavity is formed by an annular surface defining a large central opening 24.
  • This annular surface is provided with two small diametrically opposite grooves 72 located at the outlet of the lateral grooves 70 in said annular surface.
  • the jets arrive simultaneously at high speed face to face and thus generate a frothy liquid which flows directly into the container, without reflections on the inner wall of the nozzle of the discharge means, that is to say -to say without dirtying this wall.
  • a cyclonic jet is formed which generates foam. This effect is supplemented in the embodiments illustrated in FIGS.
  • the length of said nozzle is defined as a function of the number of reflections cyclonic jet, this number of reflections being determined from the size of the foam bubbles desired.
  • the cyclonic jet emerging from the central opening 25 loses its power in this nozzle and results in a moderate flow in power and in amplitude, in particular with a reduced opening angle at the level of the container such as for example a cup or a cup. .

Abstract

The inventive device for generating a liquid jet, in particular an infusion or solution exhibiting a foaming aspect substentially comprises a support (11) for bearing a pocket (12) containing an infusible or dissolvable substance. Said support (11) is made of a plastic material and the thickness of the bottom thereof is such that it is deformable by the action of a minimum pressure and restores the initial shape when said pressure is released. A lid (14) is placed on the support (11) and clamped to the edge (15) thereof by means of an annular sealing joint (16). A pressurised water supply (17) is disposed in the middle of the lid. A collector (18) for collecting the infusion or solution after the water passage through the pocket (12) is fixed to the support (11) and a generator (20) for at least one cyclonic jet is interposed between said collector (18) and means (21) for discharging the infusion or solution into a container.

Description

DISPOSITIF GENERATEUR D'AU MOINS UN JET D'UNE BOISSON ET DISTRIBUTEUR DE BOISSON EQUIPE DE CE DISPOSITIFDEVICE FOR GENERATING AT LEAST ONE JET OF A BEVERAGE AND BEVERAGE DISPENSER PROVIDED WITH SUCH A DEVICE
Domaine technique La présente invention concerne un dispositif générateur d'au moins un jet d'une boisson, notamment d'une boisson chaude, comportant une unité de production d'eau sous pression, un support agencé pour porter une pochette perméable à cette eau, contenant une substance à infuser ou à dissoudre pour produire une infusion ou une solution de cette substance lors du passage de l'eau sous pression à travers cette pochette, un collecteur de cette infusion ou de cette solution sous pression et des moyens pour propulser cette infusion ou cette solution dans un récipient.Technical Field The present invention relates to a device generating at least one jet of a drink, in particular a hot drink, comprising a unit for producing pressurized water, a support arranged to carry a pouch permeable to this water, containing a substance to be infused or dissolved to produce an infusion or a solution of this substance during the passage of pressurized water through this pouch, a collector of this infusion or this pressurized solution and means for propelling this infusion or this solution in a container.
Elle concerne également un distributeur de boisson, notamment d'une boisson chaude, équipé de ce dispositif.It also relates to a drink dispenser, in particular a hot drink, equipped with this device.
Technique antérieurePrior art
Les machines à café domestiques actuelles fonctionnent en général sous des pressions de l'ordre de 7 à 20 bars pour infuser la poudre de café moulu. Elles utilisent cette pression contre une grille fine ou une pièce en métal fritte ou une soupape pour créer de la mousse ou un récipient intermédiaire. L'inconvénient des machines à haute pression est leur prix élevé dû essentiellement à la complexité des composants haute pression.Current domestic coffee machines generally operate under pressures of the order of 7 to 20 bars to brew ground coffee powder. They use this pressure against a fine grid or sintered metal piece or valve to create foam or an intermediate container. The disadvantage of high pressure machines is their high price mainly due to the complexity of the high pressure components.
En ce qui concerne les machines à basse pression dont le prix est sensiblement plus bas, quelques tentatives ont été faites pour obtenir un café mousseux. L'une de ces réalisations est décrite dans la publication européenne EP 0 878 158 A2 qui décrit une machine à café dans laquelle le café extrait par infusion de poudre de café moulu contenu dans une pochette interposée sur la trajectoire de l'eau chaude, est injecté sous pression dans un récipient intermédiaire, avant de s'écouler librement dans une tasse. Cette injection dans un récipient intermédiaire a pour effet de produire une mousse résiduelle qui flotte à la surface de l'infusion.With regard to low pressure machines, the price of which is considerably lower, some attempts have been made to obtain a frothy coffee. One of these embodiments is described in European publication EP 0 878 158 A2 which describes a coffee machine in which the coffee extracted by infusion of ground coffee powder contained in a pouch interposed on the path of hot water, is injected under pressure into an intermediate container, before flowing freely into a cup. This injection into an intermediate container has the effect of producing a residual foam which floats on the surface of the infusion.
L'inconvénient de ce système est la conséquence de l'injection de l'infusion de café dans le récipient intermédiaire qui conserve toujours un résidu de cette infusion qui sera entraîné au moment de la production du café suivant.The drawback of this system is the consequence of the injection of the coffee infusion into the intermediate container which always retains a residue of this infusion which will be entrained during the production of the next coffee.
Toutefois, si l'intervalle de temps entre la production de deux tasses de café est long, le résidu de l'infusion de la poudre de café sèche en encrassant la machine. En outre, cette machine ne se prête pas à une utilisation du type "multiboissons". En effet, le résidu d'infusion de café qui stagne dans le récipient intermédiaire se mélange à la préparation suivante qui peut être du thé ou du chocolat en altérant la qualité de cette préparation. De même il est impensable de réaliser un lait chaud, une soupe ou une autre préparation avec une telle machine qui est exclusivement dédiée à la préparation d'une infusion de café.However, if the time interval between the production of two cups of coffee is long, the residue from the brewing of the coffee powder dries up by fouling the machine. In addition, this machine is not suitable for use of the "multi-beverage" type. Indeed, the coffee brew residue that stagnates in the intermediate container mixes with the next preparation which can be tea or chocolate, altering the quality of this preparation. Similarly it is unthinkable to make hot milk, soup or other preparation with such a machine which is exclusively dedicated to the preparation of a coffee brew.
Un autre inconvénient lié à ce type de machine est le refroidissement dû au long cheminement du café avant qu'il n'arrive dans la tasse, car la température d'extraction en amont étant constante, le chemin rallongé provoque une perte non désirable de calories à l'arrivée de la boisson dans la tasse. En outre, le contenu résiduel du récipient refroidit systématiquement le contenu de la tasse suivante.Another drawback associated with this type of machine is the cooling due to the long journey of the coffee before it reaches the cup, since the upstream extraction temperature is constant, the extended path causes an undesirable loss of calories when the drink arrives in the cup. In addition, the residual contents of the container systematically cools the contents of the next cup.
Sur le plan pratique ces machines ont un encombrement élevé et le nombre d'éléments à nettoyer entre deux cessions de cafés est contraignant.In practical terms, these machines have a large footprint and the number of elements to be cleaned between two coffee transfers is restrictive.
Exposé de l'inventionStatement of the invention
Le but de l'invention est de réaliser un dispositif simple capable de générer un jet de liquide, notamment d'une infusion, par exemple d'une infusion de café ou de thé, mais également d'une solution, par exemple de cacao, de chocolat, de lait en poudre ou de toute préparation liquide ou poudreuse soluble dans de l'eau, présentant un aspect mousseux, ne laissant subsister aucun résidu et permettant de produire sans aucune adaptation ou nettoyage intermédiaire, des boissons variées chaudes ou froides.The object of the invention is to provide a simple device capable of generating a jet of liquid, in particular an infusion, for example an infusion of coffee or tea, but also a solution, for example cocoa, chocolate, milk powder or any liquid or powdery preparation soluble in water, having a frothy appearance, leaving no residue and making it possible to produce, without any adaptation or intermediate cleaning, various hot or cold drinks.
Ce but est atteint par un dispositif selon l'invention tel que défini en préambule et caractérisé en ce qu'il comporte un générateur d'au moins un jet cyclonique interposé entre ledit collecteur de cette infusion ou de cette solution et lesdits moyens pour déverser cette infusion ou cette solution directement dans un récipient.This object is achieved by a device according to the invention as defined in the preamble and characterized in that it comprises a generator of at least one cyclonic jet interposed between said collector of this infusion or this solution and said means for discharging this infusion or this solution directly into a container.
Selon un mode de réalisation avantageux, ledit générateur d'au moins un jet cyclonique comporte une cavité centrale au moins partiellement cylindrique délimitée par une paroi latérale et un fond, la paroi latérale définissant au moins un passage pour un jet sous pression de cette infusion ou de cette solution pénétrant dans ladite cavité, ce passage étant orienté vers le côté de la paroi latérale opposé à celui où il se trouve pour générer ledit jet cyclonique.According to an advantageous embodiment, said generator of at least one cyclonic jet comprises an at least partially cylindrical central cavity delimited by a side wall and a bottom, the side wall defining at least one passage for a pressurized jet of this infusion or of this solution penetrating into said cavity, this passage being oriented towards the side of the side wall opposite to that where it is located to generate said cyclonic jet.
De préférence, la pression de l'eau est au minimum sensiblement égale à 0,5 bar.Preferably, the water pressure is at least substantially equal to 0.5 bar.
De façon avantageuse ledit fond de la cavité centrale est pourvu d'une ouverture circulaire sensiblement centrale pour libérer ledit jet cyclonique vers lesdits moyens pour déverser cette infusion ou cette solution dans un récipient.Advantageously, said bottom of the central cavity is provided with a substantially central circular opening to release said cyclonic jet towards said means for pouring this infusion or this solution into a container.
De préférence, ladite ouverture centrale circulaire de la cavité au moins partiellement cylindrique est agencée pour libérer ledit jet cyclonique selon un angle d'ouverture sensiblement compris entre 60 et 150 degrés et de préférence voisin de 120 degrés.Preferably, said circular central opening of the at least partially cylindrical cavity is arranged to release said cyclonic jet at an opening angle substantially between 60 and 150 degrees and preferably close to 120 degrees.
Selon un mode de réalisation préférentiel, lesdits moyens pour déverser cette infusion ou cette solution dans un récipient comportent une tuyère sensiblement cylindrique ayant une paroi latérale agencée pour réfléchir ledit jet cyclonique à la sortie de ladite ouverture centrale circulaire. De façon avantageuse, la longueur de ladite tuyère est agencée pour que ledit jet cyclonique soit réfléchi au moins une fois avant de se déverser dans ledit récipient. De préférence, la longueur de ladite tuyère est définie en fonction du nombre de réflexions désirées du jet cyclonique, ce nombre de réflexions étant déterminé à partir de la taille des bulles de mousse souhaitéeAccording to a preferred embodiment, said means for pouring this infusion or this solution into a container comprises a substantially cylindrical nozzle having a side wall arranged to reflect said cyclonic jet at the outlet of said circular central opening. Advantageously, the length of said nozzle is arranged so that said cyclonic jet is reflected at least once before discharging into said container. Preferably, the length of said nozzle is defined as a function of the number of reflections desired from the cyclonic jet, this number of reflections being determined from the size of the foam bubbles desired.
Selon un premier mode de construction, ledit passage dans la paroi latérale du générateur agencé pour générer ledit jet cyclonique a un axe longitudinal sensiblement parallèle à l'axe de ladite ouverture centrale circulaire.According to a first construction method, said passage in the side wall of the generator arranged to generate said cyclonic jet has a longitudinal axis substantially parallel to the axis of said circular central opening.
Selon un second mode de construction, ledit passage dans la paroi latérale de du générateur agencé pour générer ledit jet cyclonique a un axe longitudinal formant un angle aigu avec l'axe de ladite ouverture centrale circulaire.According to a second embodiment, said passage in the side wall of the generator arranged to generate said cyclonic jet has a longitudinal axis forming an acute angle with the axis of said circular central opening.
D'une manière particulièrement avantageuse, ladite paroi latérale du générateur agencé pour générer ledit jet cyclonique définit au moins deux passages opposés pour deux jets sous pression de cette infusion ou de cette solution, ces deux jets étant sensiblement opposés et pénétrant dans ladite cavité centrale, chacun de ces passages étant orienté vers le côté opposé au côté de la paroi latérale dans laquelle il est ménagé pour combiner son effet à celui de l'autre passage et générer ledit jet cyclonique.In a particularly advantageous manner, said side wall of the generator arranged to generate said cyclonic jet defines at least two opposite passages for two jets under pressure of this infusion or of this solution, these two jets being substantially opposite and penetrating into said central cavity, each of these passages being oriented towards the side opposite to the side of the side wall in which it is formed to combine its effect with that of the other passage and generate said cyclonic jet.
Chacun des deux jets sensiblement opposés générés par les passages opposés est de préférence orienté vers le côté opposé au côté de la paroi latérale d'où il est généré sous un angle aigu, la paroi latérale de ladite cavité au moins partiellement cylindrique étant agencée pour réfléchir lesdits jets sensiblement opposés de façon sensiblement symétrique par rapport à ladite ouverture sensiblement centrale ménagée dans le fond de ladite pièce pourvue de ladite cavité centrale. Selon un mode de réalisation particulièrement avantageux, le générateur d'au moins un jet cyclonique est monté sous ledit support de ladite pochette contenant une substance à infuser ou à dissoudre, ce support comportant un noyau cylindrique qui est partiellement engagé dans cette cavité centrale en ménageant au moins deux passages dans la paroi latérale dudit générateur, ces passages étant sensiblement symétriques par rapport à ladite ouverture centrale circulaire et communiquant d'une part avec au moins un orifice ménagé dans ledit collecteur de l'infusion ou de la solution et d'autre part respectivement avec au moins deux canaux ménagés dans ledit fond du générateur et débouchant dans ladite cavité centrale circulaire.Each of the two substantially opposite jets generated by the opposite passages is preferably oriented towards the side opposite the side of the side wall from which it is generated at an acute angle, the side wall of said at least partially cylindrical cavity being arranged to reflect said jets substantially opposite in a substantially symmetrical manner relative to said substantially central opening formed in the bottom of said part provided with said central cavity. According to a particularly advantageous embodiment, the generator of at least one cyclonic jet is mounted under said support of said pouch containing a substance to be infused or dissolved, this support comprising a cylindrical core which is partially engaged in this central cavity while providing at least two passages in the side wall of said generator, these passages being substantially symmetrical with respect to said circular central opening and communicating on the one hand with at least one orifice formed in said infusion or solution collector and on the other hand share respectively with at least two channels formed in said bottom of the generator and opening into said circular central cavity.
Dans toutes les formes de réalisation du dispositif, le fond du support de la pochette à infuser est réalisé en un matériau élastique déformable sous la pression appliquée sur ladite pochette pendant l'infusion.In all embodiments of the device, the bottom of the support of the pouch to be infused is made of an elastic material deformable under the pressure applied to said pouch during infusion.
Description sommaire des dessinsBrief description of the drawings
La présente invention et ses avantages seront mieux compris à la lecture de la description détaillée d'une forme de mise en œuvre du dispositif selon l'invention, en référence aux dessins annexés donnés à titre indicatif et non limitatif, dans lesquels : la figure 1 est une vue en coupe représentant une forme de réalisation préférée du dispositif selon l'invention,The present invention and its advantages will be better understood on reading the detailed description of an embodiment of the device according to the invention, with reference to the accompanying drawings given by way of non-limiting example, in which: FIG. 1 is a sectional view showing a preferred embodiment of the device according to the invention,
- la figure 2 est une vue en perspective, partiellement coupée, représentant le dispositif de la figure 1 , la figure 3 est une vue partielle en coupe du dispositif selon l'invention,FIG. 2 is a perspective view, partially cut away, representing the device of FIG. 1, FIG. 3 is a partial view in section of the device according to the invention,
- la figure 4 est une vue partielle de dessus du dispositif selon l'invention tel que représenté par la figure 1 , et les figures 5 à 7 illustrent différentes formes de réalisation du générateur du jet cyclonique du dispositif selon l'invention.FIG. 4 is a partial top view of the device according to the invention as shown in FIG. 1, and Figures 5 to 7 illustrate different embodiments of the cyclonic jet generator of the device according to the invention.
Manière(s) de réaliser l'invention En référence à la figure 1 , le dispositif générateur d'au moins un jet d'une boisson selon l'invention est représenté comme une partie d'une machine à café à basse pression. Ce dispositif est applicable à la préparation d'autres boissons chaudes ou à celle de boissons froides. L'ensemble de la machine n'est pas représenté, étant donné que ce dispositif pourrait être monté dans diverses machines du même type. Son but principal est de produire une infusion ou une solution de cette substance lors du passage de l'eau sous pression à travers une pochette perméable à cette eau, contenant une substance à infuser ou à dissoudre et à verser cette infusion ou cette solution dans un récipient avec une couche de mousse, ce qui est particulièrement important lorsque la boisson est une infusion de poudre de café.Manner (s) of Carrying Out the Invention With reference to FIG. 1, the device generating at least one jet of a drink according to the invention is shown as part of a low pressure coffee machine. This device is applicable to the preparation of other hot drinks or to that of cold drinks. The entire machine is not shown, since this device could be mounted in various machines of the same type. Its main purpose is to produce an infusion or a solution of this substance during the passage of water under pressure through a pouch permeable to this water, containing a substance to be infused or to be dissolved and to pour this infusion or this solution into a container with a layer of foam, which is particularly important when the drink is an infusion of coffee powder.
Ce dispositif 10 comporte essentiellement un support 11 agencé pour porter une pochette 12 faite de deux feuilles d'un matériau perméable à l'eau, soudées sur leur pourtour et contenant une substance à infuser ou à dissoudre, telle que de la poudre de café, du thé, du lait en poudre, du chocolat en poudre ou en solution, de la soupe ou similaires. Ce support 11 est réalisé en une matière élastique et son fond 13 a une épaisseur telle qu'il puisse se déformer sous l'action d'une pression minimum sensiblement égale à 0,5 bar et revenir dans sa forme initiale lorsque cette pression n'est plus appliquée. Un couvercle 14 est posé sur le support 11 , serré contre le bord 15 dudit support par l'intermédiaire d'un joint d'étanchéité annulaire 16. De cette manière, ladite pochette 12 est enfermée à l'intérieur d'un espace fermé communiquant avec une arrivée d'eau sous pression 17 ménagée au centre du couvercle 14 et avec un collecteur 18 agencé pour récupérer l'infusion ou la solution après le passage de l'eau à travers la pochette 12. Dans l'exemple représenté, le collecteur 18 est solidaire du support 11 et constitue la partie centrale de ce support. Ce collecteur pourrait être une pièce distincte et remplir les mêmes fonctions.This device 10 essentially comprises a support 11 arranged to carry a pouch 12 made of two sheets of a material permeable to water, welded around their periphery and containing a substance to be infused or dissolved, such as coffee powder, tea, milk powder, chocolate powder or solution, soup or the like. This support 11 is made of an elastic material and its bottom 13 has a thickness such that it can deform under the action of a minimum pressure substantially equal to 0.5 bar and return to its initial shape when this pressure does not is no longer applied. A cover 14 is placed on the support 11, tightened against the edge 15 of said support by means of an annular seal 16. In this way, said pocket 12 is enclosed within a closed communicating space with a pressurized water inlet 17 arranged in the center of the cover 14 and with a collector 18 arranged to recover the infusion or the solution after the water has passed through the pouch 12. In the example shown, the collector 18 is integral with the support 11 and constitutes the part central of this support. This collector could be a separate room and fulfill the same functions.
Le collecteur 18 est pourvu d'un ensemble de trous 19, par exemple disposés en cercle, comme le montre la figure 4, où le nombre de trous est de six, régulièrement disposés autour du centre du support 11.The manifold 18 is provided with a set of holes 19, for example arranged in a circle, as shown in FIG. 4, where the number of holes is six, regularly arranged around the center of the support 11.
Le dispositif 10 comporte par ailleurs un générateur 20 d'au moins un jet cyclonique de liquide, illustré plus en détail sur les figures 3 et 4, et permettant d'obtenir une boisson ayant un aspect mousseux. Ce générateur 20 est interposé entre ledit collecteur 18 de l'infusion ou de la solution et des moyens 21 pour déverser cette infusion ou cette solution dans un récipient (non représenté). Ces moyens sont essentiellement constitués d'une tuyère 22 de forme cylindrique qui est solidaire d'un élément 23 porteur du support 11 et centrée par rapport à ce dernier.The device 10 also comprises a generator 20 of at least one cyclonic jet of liquid, illustrated in more detail in FIGS. 3 and 4, and making it possible to obtain a drink having a frothy appearance. This generator 20 is interposed between said collector 18 of the infusion or the solution and means 21 for pouring this infusion or this solution into a container (not shown). These means essentially consist of a nozzle 22 of cylindrical shape which is integral with an element 23 carrying the support 11 and centered relative to the latter.
Le générateur 20 est en outre agencé pour créer une restriction de débit due au temps d'écoulement rallongé par la mise en rotation du fluide à haute vitesse. Ce ralentissement de débit favorise une montée en pression de l'espace fermé dans lequel se trouve la pochette 12 permettant ainsi une extraction à plus haute pression durant l'infusion et ceci sans soupape ou pièce mobile, ni grille. Cette réalisation permet ainsi de supprimer le nettoyage actuellement indispensable lorsqu'on passe d'un type de boisson à un autre, par exemple d'un café à une soupe. En outre, le fait que le fond du support 11 soit elastiquement deformable a pour but, lorsque l'on applique la pression d'eau sur la pochette 12 et que ce fond prend alors une forme concave, d'obtenir une meilleure extraction du volume de produit contenu dans la pochette. Lorsque la pression cesse, le fond 13 reprend sa position initiale en créant une contre-pression sur la pochette qui provoque un "essorage" du volume résiduel d'infusion, ce qui évite un remplissage du système de diffusion et permet aussi de passer d'une boisson à l'autre sans mélange. Le générateur 20 comporte une cavité centrale sensiblement cylindrique 24 dans le fond de laquelle est ménagée une ouverture centrale circulaire 25 qui émet un jet de l'infusion ou de la solution préparée ayant sensiblement une forme de cône dont l'ouverture est comprise entre 60 et 150 degrés et de l'ordre de 120 degrés. Ce jet est réfléchi par la paroi latérale de la tuyère 22 et s'écoule finalement par l'orifice de sortie 26 de cette tuyère directement vers le récipient destiné à recevoir la boisson.The generator 20 is further arranged to create a flow restriction due to the extended flow time by the rotation of the fluid at high speed. This slowdown in flow favors a rise in pressure in the closed space in which the pouch 12 is located, thus allowing extraction at higher pressure during the infusion and this without valve or moving part or grid. This embodiment thus makes it possible to eliminate the cleaning currently essential when switching from one type of drink to another, for example from a coffee to a soup. In addition, the fact that the bottom of the support 11 is elastically deformable has the purpose, when applying the water pressure on the sleeve 12 and that this bottom then takes a concave shape, to obtain a better extraction of the volume of product contained in the pouch. When the pressure ceases, the bottom 13 returns to its initial position by creating a back pressure on the sleeve which causes a "spin" of the residual volume of infusion, which avoids filling the diffusion system and also allows to pass from one drink to another without mixing. The generator 20 includes a substantially cylindrical central cavity 24 in the bottom of which is formed a circular central opening 25 which emits a jet of the infusion or of the prepared solution having substantially a cone shape whose opening is between 60 and 150 degrees and around 120 degrees. This jet is reflected by the side wall of the nozzle 22 and finally flows through the outlet orifice 26 of this nozzle directly towards the container intended to receive the drink.
Le support 11 de la pochette 12 comporte en son centre un noyau central 30 qui est partiellement engagé dans la cavité centrale 24 du générateur 20. Les trous 19 du collecteur 18 sont disposés en cercle autour de ce noyau central et permettent l'écoulement de l'infusion ou de la solution vers un espace 31 (figure 3) délimité par la surface supérieure annulaire du générateur 20. Le générateur 20 comporte en outre au moins une rainure latérale 32 définissant un passage du liquide dans sa paroi latérale, dont l'axe longitudinal peut être parallèle à l'axe de l'ouverture centrale circulaire 25 ou peut former un angle aigu avec ledit axe. Dans la forme de réalisation préférée illustrée plus particulièrement par la figure 4, le générateur 20 comporte deux rainures latérales 32 débouchant dans deux canaux 33, sensiblement parallèles à un diamètre de la cavité centrale du générateur 20, ménagés dans le fond dudit générateur et amenant l'infusion ou la solution dans un espace 34 de formation du jet cyclonique disposé entre le fond de ladite cavité centrale 24 et ledit noyau central 30 partiellement engagé dans cette cavité. Les deux canaux 33 sont décalés et dirigent respectivement les jets correspondants vers les parois opposées de manière à mettre le liquide en rotation et provoquer ainsi un jet cyclonique. La turbulence de ces jets provoque un mélange par friction de l'infusion ou de la solution avec de l'air et engendre une mousse qui se déposera en surface dans le récipient récepteur. Les figures 5, 6 et 7 représentent des variantes de réalisation du générateur 20 de jet cyclonique respectivement en perspective, en coupe transversale et en vue de dessus.The support 11 of the pocket 12 has in its center a central core 30 which is partially engaged in the central cavity 24 of the generator 20. The holes 19 of the manifold 18 are arranged in a circle around this central core and allow the flow of the infusion or solution to a space 31 (Figure 3) delimited by the annular upper surface of the generator 20. The generator 20 further comprises at least one lateral groove 32 defining a passage of the liquid in its side wall, whose axis longitudinal may be parallel to the axis of the circular central opening 25 or may form an acute angle with said axis. In the preferred embodiment illustrated more particularly in FIG. 4, the generator 20 has two lateral grooves 32 opening into two channels 33, substantially parallel to a diameter of the central cavity of the generator 20, formed in the bottom of said generator and bringing the infusion or solution in a space 34 for forming the cyclonic jet disposed between the bottom of said central cavity 24 and said central core 30 partially engaged in this cavity. The two channels 33 are offset and respectively direct the corresponding jets towards the opposite walls so as to put the liquid in rotation and thus cause a cyclonic jet. The turbulence of these jets causes a friction mixture of the infusion or the solution with air and generates a foam which will deposit on the surface in the receiving container. Figures 5, 6 and 7 show alternative embodiments of the cyclonic jet generator 20 respectively in perspective, in cross section and in top view.
Le générateur 20 représenté par la figure 5 comporte une rainure latérale unique 50 qui débouche dans un canal unique 51 pour amener l'infusion ou la solution dans la cavité centrale 52 du générateur, ce canal étant orienté selon un rayon de ladite cavité. Le jet de cette infusion ou de cette solution se brise sur la paroi latérale opposée à l'entrée du canal 51 et forme un jet réfléchi qui génère un jet tourbillonnaire ou cyclonique où l'infusion ou la solution se charge en air sous la forme de bulles de très faibles dimensions qui créent un mélange mousseux qui sera évacué par l'ouverture centrale 25 débouchant dans la tuyère des moyens de déversement de la boisson dans un récipient.The generator 20 represented by FIG. 5 has a single lateral groove 50 which opens into a single channel 51 for bringing the infusion or the solution into the central cavity 52 of the generator, this channel being oriented along a radius of said cavity. The jet of this infusion or this solution breaks on the side wall opposite the entrance to the channel 51 and forms a reflected jet which generates a vortex or cyclonic jet where the infusion or the solution is charged with air in the form of bubbles of very small dimensions which create a frothy mixture which will be evacuated through the central opening 25 opening into the nozzle of the means for pouring the beverage into a container.
Dans la forme de réalisation illustrée par la figure 6, le générateur 20 comporte trois canaux 61 coopérant avec trois rainures latérales 60 ménagées dans la paroi latérale de la cavité 62 du générateur 20. Comme précédemment les jets de cette infusion ou de cette solution sont réfléchis sur les parois latérales opposées et génèrent un jet tourbillonnaire ou cyclonique où l'infusion ou la solution se charge en air sous la forme de bulles de très faibles dimensions qui crée un mélange mousseux qui sera évacué par l'ouverture centrale 25.In the embodiment illustrated in Figure 6, the generator 20 has three channels 61 cooperating with three lateral grooves 60 formed in the side wall of the cavity 62 of the generator 20. As before the jets of this infusion or this solution are reflected on the opposite side walls and generate a vortex or cyclonic jet where the infusion or solution is charged with air in the form of bubbles of very small dimensions which creates a frothy mixture which will be evacuated through the central opening 25.
La figure 7 illustre une variante de réalisation dans laquelle le générateur 20 comporte uniquement deux rainures latérales 70 disposées à chacune des extrémités d'un diamètre de la cavité centrale 71. Le fond de cette cavité est formé par une surface annulaire définissant une grande ouverture centrale 24. Cette surface annulaire est pourvue de deux petites gorges 72 diamétralement opposées situées au débouché des rainures latérales 70 dans ladite surface annulaire. Dans cette forme de réalisation, les jets arrivent simultanément à haute vitesse face à face et génèrent ainsi un liquide mousseux qui s'écoule directement dans le récipient, sans réflexions sur la paroi intérieure de la tuyère des moyens de déversement, c'est-à-dire sans salir cette paroi. Quelle que soit la forme de réalisation du générateur, il se forme un jet cyclonique qui génère de la mousse. Cet effet est complété dans les formes de réalisations illustrées par les figures 1 à 6 par les réflexions multiples du jet sortant de l'ouverture centrale 25 sur les parois de la tuyère 22. La longueur de ladite tuyère est définie en fonction du nombre de réflexions désirées du jet cyclonique, ce nombre de réflexions étant déterminé à partir de la taille des bulles de mousse souhaitée. Le jet cyclonique émergeant de l'ouverture centrale 25 perd de sa puissance dans cette tuyère et aboutit à un écoulement modéré en puissance et en amplitude, notamment avec un angle d'ouverture réduit au niveau du récipient tel que par exemple une tasse ou un gobelet.FIG. 7 illustrates an alternative embodiment in which the generator 20 has only two lateral grooves 70 disposed at each of the ends with a diameter of the central cavity 71. The bottom of this cavity is formed by an annular surface defining a large central opening 24. This annular surface is provided with two small diametrically opposite grooves 72 located at the outlet of the lateral grooves 70 in said annular surface. In this embodiment, the jets arrive simultaneously at high speed face to face and thus generate a frothy liquid which flows directly into the container, without reflections on the inner wall of the nozzle of the discharge means, that is to say -to say without dirtying this wall. Whatever the embodiment of the generator, a cyclonic jet is formed which generates foam. This effect is supplemented in the embodiments illustrated in FIGS. 1 to 6 by the multiple reflections of the jet leaving the central opening 25 on the walls of the nozzle 22. The length of said nozzle is defined as a function of the number of reflections cyclonic jet, this number of reflections being determined from the size of the foam bubbles desired. The cyclonic jet emerging from the central opening 25 loses its power in this nozzle and results in a moderate flow in power and in amplitude, in particular with a reduced opening angle at the level of the container such as for example a cup or a cup. .
Toutes les géométries et le nombre des canaux ménagés dans le fond du générateur de jets cycloniques sont envisageables pour obtenir l'effet recherché, à savoir la génération de fines bulles d'air dans l'infusion ou la solution. All the geometries and the number of channels provided in the bottom of the cyclonic jet generator can be envisaged to obtain the desired effect, namely the generation of fine air bubbles in the infusion or the solution.

Claims

REVENDICATIONS
1. Dispositif (10) générateur d'au moins un jet d'une boisson, notamment d'une boisson chaude, comportant une unité de production d'eau sous pression, un support agencé pour porter une pochette perméable à cette eau, contenant une substance à infuser ou à dissoudre pour produire une infusion ou une solution de cette substance lors du passage de l'eau sous pression à travers cette pochette, un collecteur de cette infusion ou de cette solution sous pression et des moyens pour propulser cette infusion ou cette solution dans un récipient, caractérisé en ce qu'il comporte un générateur (20) d'au moins un jet cyclonique interposé entre ledit collecteur (18) de cette infusion ou de cette solution et lesdits moyens (21) pour déverser cette infusion ou cette solution dans un récipient.1. Device (10) generating at least one jet of a drink, in particular a hot drink, comprising a unit for producing pressurized water, a support designed to carry a pouch permeable to this water, containing a substance to be infused or dissolved to produce an infusion or a solution of this substance when water under pressure passes through this pouch, a collector of this infusion or this solution under pressure and means for propelling this infusion or this solution in a container, characterized in that it comprises a generator (20) of at least one cyclonic jet interposed between said collector (18) of this infusion or this solution and said means (21) for discharging this infusion or this solution in a container.
2. Dispositif selon la revendication 1 , caractérisé en ce que ledit générateur (20) d'au moins un jet cyclonique comporte une cavité centrale au moins partiellement cylindrique délimitée par une paroi latérale et un fond, la paroi latérale définissant au moins un passage pour un jet sous pression de cette infusion ou de cette solution pénétrant dans ladite cavité, ce passage étant orienté vers le côté de la paroi latérale opposé à celui où il se trouve pour générer ledit jet cyclonique.2. Device according to claim 1, characterized in that said generator (20) of at least one cyclonic jet comprises an at least partially cylindrical central cavity delimited by a side wall and a bottom, the side wall defining at least one passage for a pressurized jet of this infusion or of this solution penetrating into said cavity, this passage being oriented towards the side of the side wall opposite to that where it is located to generate said cyclonic jet.
3. Dispositif selon la revendication 1 , caractérisé en ce que la pression de l'eau est au minimum sensiblement égale à 0,5 bar.3. Device according to claim 1, characterized in that the water pressure is at least substantially equal to 0.5 bar.
4. Dispositif selon la revendication 2, caractérisé en ce que ledit fond de la cavité centrale est pourvu d'une ouverture circulaire (25) sensiblement centrale pour libérer ledit jet cyclonique vers lesdits moyens (21) pour déverser cette infusion ou cette solution dans un récipient.4. Device according to claim 2, characterized in that said bottom of the central cavity is provided with a circular opening (25) substantially central to release said cyclonic jet towards said means (21) for pouring this infusion or this solution into a container.
5. Dispositif selon la revendication 4, caractérisé en ce que ladite ouverture centrale circulaire (25) de la cavité au moins partiellement cylindrique est agencée pour libérer ledit jet cyclonique selon un angle d'ouverture sensiblement compris entre 60 et 150 degrés et de préférence voisin de 120 degrés.5. Device according to claim 4, characterized in that said circular central opening (25) of the at least partially cylindrical cavity is arranged to release said cyclonic jet at an opening angle substantially between 60 and 150 degrees and preferably close to 120 degrees.
6. Dispositif selon les revendications 1 et 4, caractérisé en ce que lesdits moyens (21) pour déverser cette infusion ou cette solution dans un récipient comportent une tuyère (22) sensiblement cylindrique ayant une paroi latérale agencée pour réfléchir ledit jet cyclonique à la sortie de ladite ouverture centrale circulaire (25).6. Device according to claims 1 and 4, characterized in that said means (21) for pouring this infusion or this solution into a container comprises a substantially cylindrical nozzle (22) having a side wall arranged to reflect said cyclonic jet at the outlet of said circular central opening (25).
7. Dispositif selon la revendication 6, caractérisé en ce que la longueur de ladite tuyère (22) est agencée pour que ledit jet cyclonique soit réfléchi au moins une fois avant de se déverser dans ledit récipient.7. Device according to claim 6, characterized in that the length of said nozzle (22) is arranged so that said cyclonic jet is reflected at least once before pouring into said container.
8. Dispositif selon la revendication 7, caractérisé en ce que la longueur de ladite tuyère (22) est définie en fonction du nombre de réflexions désirées du jet cyclonique, ce nombre de réflexions étant déterminé à partir de la taille des bulles de mousse souhaitée.8. Device according to claim 7, characterized in that the length of said nozzle (22) is defined according to the number of desired reflections of the cyclonic jet, this number of reflections being determined from the size of the desired foam bubbles.
9. Dispositif selon la revendication 2, caractérisé en ce que ledit passage dans la paroi latérale du générateur (20) agencé pour générer ledit jet cyclonique a un axe longitudinal sensiblement parallèle à l'axe de ladite ouverture centrale circulaire (25).9. Device according to claim 2, characterized in that said passage in the side wall of the generator (20) arranged to generate said cyclonic jet has a longitudinal axis substantially parallel to the axis of said circular central opening (25).
10. Dispositif selon la revendication 2, caractérisé en ce que ledit passage dans la paroi latérale du générateur (20) agencé pour générer ledit jet cyclonique a un axe longitudinal formant un angle aigu avec l'axe de ladite ouverture centrale circulaire (25).10. Device according to claim 2, characterized in that said passage in the side wall of the generator (20) arranged to generate said cyclonic jet has a longitudinal axis forming an acute angle with the axis of said circular central opening (25).
11. Dispositif selon la revendication 2, caractérisé en ce que ladite paroi latérale du générateur (20) agencé pour générer ledit jet cyclonique définit au moins deux passages opposés (33) pour deux jets sous pression de cette infusion ou de cette solution, ces deux jets étant sensiblement opposés et pénétrant dans ladite cavité centrale (24), chacun de ces passages étant orienté vers le côté opposé au côté de la paroi latérale dans laquelle il est ménagé pour combiner son effet à celui de l'autre passage et générer ledit jet cyclonique.11. Device according to claim 2, characterized in that said side wall of the generator (20) arranged to generate said cyclonic jet defines at least two opposite passages (33) for two jets under pressure of this infusion or this solution, these two jets being substantially opposite and penetrating into said central cavity (24), each of these passages being oriented towards the side opposite the side of the side wall in which it is arranged to combine its effect with that from the other passage and generate said cyclonic jet.
12. Dispositif selon la revendication 1 1 , caractérisé en ce que chacun des deux jets sensiblement opposés générés par les passages opposés (33) est orienté vers le côté opposé au côté de la paroi latérale d'où il est généré sous un angle aigu, la paroi latérale de ladite cavité (24) étant agencée pour réfléchir lesdits jets sensiblement opposés de façon sensiblement symétrique par rapport à ladite ouverture centrale circulaire (25) ménagée dans le fond du générateur (20).12. Device according to claim 1 1, characterized in that each of the two substantially opposite jets generated by the opposite passages (33) is oriented towards the side opposite to the side of the side wall from which it is generated at an acute angle, the side wall of said cavity (24) being arranged to reflect said substantially opposite jets in a substantially symmetrical manner relative to said circular central opening (25) formed in the bottom of the generator (20).
13. Dispositif selon les revendications 1 et 2, caractérisé en ce que ledit générateur (20) d'au moins un jet cyclonique est monté sous ledit support (11) de ladite pochette (12) contenant une substance à infuser ou à dissoudre, ce support (11) comportant un noyau cylindrique (30) qui est partiellement engagé dans la cavité centrale (24) du générateur (20) en ménageant au moins deux passages (32) dans la paroi latérale dudit générateur, ces passages étant sensiblement symétriques par rapport à ladite ouverture centrale circulaire (25) et communiquant d'une part avec au moins un orifice ménagé dans ledit collecteur (18) de l'infusion ou de la solution et d'autre part respectivement avec au moins deux canaux (33) ménagés dans ledit fond du générateur (20) et débouchant dans ladite cavité centrale circulaire (25).13. Device according to claims 1 and 2, characterized in that said generator (20) of at least one cyclonic jet is mounted under said support (11) of said pouch (12) containing a substance to be infused or dissolved, this support (11) comprising a cylindrical core (30) which is partially engaged in the central cavity (24) of the generator (20) by providing at least two passages (32) in the side wall of said generator, these passages being substantially symmetrical with respect to to said circular central opening (25) and communicating on the one hand with at least one orifice formed in said collector (18) of the infusion or solution and on the other hand respectively with at least two channels (33) formed in said bottom of the generator (20) and opening into said circular central cavity (25).
14. Dispositif selon la revendication 1 , caractérisé en ce que le fond (13) du support (1 1 ) de la pochette (12) à infuser est réalisé en un matériau élastique deformable sous la pression appliquée sur ladite pochette pendant l'infusion. 14. Device according to claim 1, characterized in that the bottom (13) of the support (1 1) of the pouch (12) to be infused is made of an elastic material deformable under the pressure applied to said pouch during infusion.
5. Distributeur de boissons équipé d'un dispositif (10) générateur d'au moins un jet d'une boisson, notamment d'une boisson chaude selon l'une quelconque des revendications 1 à 14. 5. Beverage dispenser equipped with a device (10) generating at least one jet of a drink, in particular a hot drink according to any one of claims 1 to 14.
PCT/CH2005/000244 2004-05-07 2005-05-02 Device for generating at least one beverage jet and a beverage dispenser provided with said device WO2005107541A1 (en)

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US5638740A (en) * 1995-02-24 1997-06-17 Cai; Zhihua Apparatus for brewing espresso and cappuccino
DE20206545U1 (en) * 2002-04-24 2002-08-08 Eugster Frismag Ag Romanshorn Outlet unit for an espresso machine
EP1371311A1 (en) * 2002-06-12 2003-12-17 Sara Lee/DE Apparatus for preparing a beverage suitable for consumption with a fine-bubble foam layer

Cited By (5)

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Publication number Priority date Publication date Assignee Title
US20140287117A1 (en) * 2007-11-09 2014-09-25 Kraft Foods R& D, Inc. Beverage Cartridge
US9828153B2 (en) * 2007-11-09 2017-11-28 Koninklijke Douwe Egberts B.V. Beverage cartridge
NL2008804C2 (en) * 2012-05-11 2013-11-12 4Sight Innovation Bv DEVICE AND METHOD FOR PREPARING DRINKS BY USING A CAPSULE
USD1016556S1 (en) * 2019-09-19 2024-03-05 TML Innovative Products, LLC Steam nozzle
US11925288B1 (en) * 2019-09-19 2024-03-12 TML Innovative Products, LLC Nozzle structure for steaming milk

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EP1744653B1 (en) 2007-10-31
EP1744653A1 (en) 2007-01-24
DE602005003120D1 (en) 2007-12-13
DE602005003120T2 (en) 2008-08-14
WO2005107541A8 (en) 2007-02-15
ATE376794T1 (en) 2007-11-15

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