TEPZZ 85 58B_T
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EP 2 285 258 B1
EUROPEAN PATENT SPECIFICATION
(12)
(45) Date of publication and mention
(51) Int Cl.:
A47J 31/40 (2006.01)
of the grant of the patent:
24.07.2013 Bulletin 2013/30
(86) International application number:
PCT/EP2009/056747
(21) Application number: 09757523.7
(87) International publication number:
(22) Date of filing: 02.06.2009
WO 2009/147142 (10.12.2009 Gazette 2009/50)
(54) THE PRESENT INVENTION CONCERNS A DEVICE FOR PREPARING A BEVERAGE WITH
ENHANCED AROMA
VORRICHTUNG ZUR HERSTELLUNG EINES GETRÄNKS MIT VERSTÄRKTEM AROMA
DISPOSITIF DE PRÉPARATION D’UNE BOISSON AUX ARÔMES AMÉLIORÉS
(72) Inventors:
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR
HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL
PT RO SE SI SK TR
• DEOLARTE, Francisco
F-75017 Paris (FR)
• GONZALEZ, Juan, J.
CH-1806 St-Légier (CH)
(30) Priority: 03.06.2008 EP 08157497
(74) Representative: Ducreux, Marie
(43) Date of publication of application:
23.02.2011 Bulletin 2011/08
(73) Proprietor: Nestec S.A.
EP 2 285 258 B1
1800 Vevey (CH)
Avenue Nestlé 55
1800 Vevey (CH)
(56) References cited:
WO-A-2004/014781
US-A- 2 452 933
GB-A- 1 067 549
US-A- 3 739 709
Note: Within nine months of the publication of the mention of the grant of the European patent in the European Patent
Bulletin, any person may give notice to the European Patent Office of opposition to that patent, in accordance with the
Implementing Regulations. Notice of opposition shall not be deemed to have been filed until the opposition fee has been
paid. (Art. 99(1) European Patent Convention).
Printed by Jouve, 75001 PARIS (FR)
EP 2 285 258 B1
Description
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[0001] The present invention concerns a device for preparing a beverage with enhanced aroma.
[0002] Many beverages like espresso and other coffee drinks, milk drinks, soups, ... are often prepared by mixing a
food soluble powder or a food liquid concentrate with a diluent. Mixing devices are known for speedier preparation of
such beverages by mixing the soluble food component with the diluent, such as hot water. These devices typically
comprise a mixing chamber in which the soluble component and the diluent are fed. The diluent is usually introduced
into the mixing chamber in order to create a whirlpool to efficiently dissolve the soluble component in the water. The
mixture is then usually evacuated from the mixing chamber through the bottom of the mixing chamber and dispensed
into a receptacle for drinking.
[0003] The object of the present invention is to improve such mixing devices in order to provide beverages presenting
higher aroma properties when they are delivered in the receptacle.
[0004] US 5,514,111 describes a device for obtaining hot drinks in solution, especially cappuccino from a mixture of
coffee in granules, milk and steam. The coffee granules are dispensed in a predetermined dose into a treatment chamber.
The treatment chamber is closed by a cover and then air, liquid and steam are injected into the treatment chamber. The
granules are mixed and dissolved in the liquid in the presence of steam and air. The beverage is removed from the
treatment chamber in a first time through an outlet inside the cover of the treatment chamber and in a second time
through a valve in the bottom of the treatment chamber. Yet the operation of such a device is complex due to the dual
evacuation of the beverage through the cover and through the bottom.
US 3739709 describes another device.
[0005] There is a need for a simpler and low cost solution enabling to dissolve a concentrate and produce a beverage
from the combination of a diluent and soluble ingredient or liquid concentrate and avoiding the aromas generated during
the dissolution to escape.
[0006] The invention is firstly based on a device for the preparation of a beverage as defined in claim 1.
[0007] The mixing chamber of the device can be of any known kind and can take various shapes. In a preferred mode,
the longitudinal upward wall is substantially cylindrical. Other shapes could be envisaged such as a polygonal, e.g.,
hexagonal, or oval section of the chamber, for instance. The bottom wall can be substantially a portion of truncated
cone. The mixing chamber presents a top opening that is usually used for the introduction of soluble ingredient that can
be introduced by gravimetric fall inside the mixing chamber. The mixing chamber also comprises a diluent inlet opening.
Said diluent inlet opening is preferably in a side wall of the mixing chamber. The mixing chamber comprises a beverage
outlet opening for delivering the beverage issued from the dissolution of soluble ingredient with the diluent inside the
mixing chamber. Said beverage outlet of the mixing chamber is preferably in the bottom wall of the mixing chamber.
[0008] According to the invention, the device comprises sealing means that are able to seal the top opening of the
mixing chamber and to prevent any fluid from leaving the mixing chamber through said sealing means or through the
connection between the sealing means and the mixing chamber edges. These sealing means are a cover. It means that
the cover is preferably made of one full piece without presenting any aperture and that said cover, once placed above
the top opening of the mixing chamber hermetically enters into contact with the mixing chamber top opening without
leaving any aperture between the cover and the edge(s) of the mixing chamber top opening. The connection between
the sealing means and the mixing chamber top opening is an hermetic seal. No fluid, either liquid or gaseous, can enter
in or leave the chamber once the sealing means seal the mixing chamber top opening.
[0009] Once the sealing means seal the top opening of the mixing chamber the only opened outlet of the mixing
chamber is the beverage outlet.
[0010] The sealing of the mixing chamber top opening can be realised according to the following mode : the sealing
means are a cover and said cover and the mixing chamber are able to move relative to each other so that in a first
position the top opening of the mixing chamber is opened and in a second position the cover closes the top opening of
the mixing chamber. According to a first mode not being part the invention, the cover is fixed and the mixing chamber
is able to move between two positions in order to be sealed or not by the cover. According to the invention , the cover
is displaceable. The cover can be linearly and/or rotationally moveable, from one position to the other while the mixing
chamber is fixed. According to this second mode, the cover is linearly and/or rotationally moveable from a position where
it covers the mixing chamber top opening to a position where it leaves the mixing chamber top opening uncovered.
[0011] The cover is composed of a soft material. By soft, it is meant that the material is sufficiently elastic to establish
a tight contact with the mixing chamber top opening in order to hermetically seal it when it is pushed against it. The soft
material can be chosen between at least one of the following materials : Plasmol®, silicone, elastomer, rubber, preferably
a thermoplastic rubber or elastomer (TPE). Actually a TPE polymer is a polymer blend or compound which, above its
melt temperature, exhibits a thermoplastic character that enables it to be shaped into a fabricated article and which,
within its design temperature range, possesses elastomeric behaviour. The interest of using a cover made of a deformable
soft material is that this material can efficiently stick to the edges of the mixing chamber top opening during the beverage
preparation : in particular, during the evacuation of the beverage from the mixing chamber, a depression occurs inside
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the mixing chamber that induces the sucking and the deformation of the soft cover improving its sealing function.
[0012] Apart from the soft part, the cover can also comprise a rigid material part for supporting the soft material.
According to the preferred embodiment of the present invention, the soft material is hold between two frames of rigid
material. Then, the frames of rigid material can be linked to a motor to control the movement of the assembly of the
frames and of the soft material. The rigid material can be chosen between at least one of the following materials : HDPE
(high density polyethylene), LDPE (low density polyethylene), POM (polyoxymethylene), PP (polypropylene), nylon,
metal, polycarbonate. This rigid part of the cover is useful to enable the displacement of the cover on and out of the
mixing chamber top opening, for example a mechanism for moving the cover can be fixed on the rigid material, the latter
supporting the soft material of the cover.
[0013] In a preferred embodiment not being part of the present invention, the mixing chamber can be connected to a
fan able to suck or to flow back gaseous fluids present inside the mixing chamber. The connection between the fan and
the mixing chamber can be a pipe that opens in the mixing chamber side wall.
[0014] The device of the present invention usually also comprises a metering device able to deliver a soluble ingredient
dose through the top opening of the mixing chamber when the latter is opened. The metering device can comprise dosing
means which can be of any known types like a screw, an auger, a barrel, a sliding chamber, a rotary pierced disc, ... for
delivering a dose of powder to the mixing chamber of the apparatus or a pump like a peristaltic pump if the soluble
ingredient is a liquid. The outlet of the metering device is directed to or cooperates with the mixing chamber top openinge.g. through a pipe - when the cover does not seal the opening.
[0015] The device can comprise a whipping chamber, said whipping chamber being connected to the mixing chamber
beverage outlet. The whipping chamber can help in the dissolution if the soluble ingredient is difficult to dissolve by only
a simple contact with the diluent or if the beverage needs to be foamed.
[0016] The invention is secondly based on a method for preparing a beverage with a device as described above
comprising at least the following steps :
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introducing a soluble ingredient inside the mixing chamber through the top opening of the mixing chamber,
closing the top opening of the mixing chamber with the sealing means,
introducing a diluent inside the chamber so that it mixes with the soluble ingredient,
evacuating the mixed product from the mixing chamber through the beverage outlet opening,
opening the top opening of the mixing chamber.
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[0017] Preferably, the top opening of the mixing chamber is opened once the mixed product has been totally evacuated
from the mixing chamber.
[0018] According to the preferred mode, the closure of the mixing chamber is realised by moving the cover to the
mixing chamber top opening and the mixing chamber is opened by moving the cover away from the mixing chamber
top opening.
[0019] If the device comprises a whipping chamber connected to the mixing chamber outlet, then during the evacuation
of the mixed product the mixed product can be whipped and the depression due to the evacuation of the beverage from
the mixing chamber is increased. This depression helps in sucking the aromas and delivering them with the beverage
in the final receptacle.
[0020] If the device comprises a fan connected to the inside of the mixing chamber which is not part of the claimed
invention, said fan can suck gaseous fluids from the mixing chamber when the mixing chamber is opened and said fan
can also flow back gaseous fluids from the mixing chamber to the beverage outlet opening of the mixing chamber when
the mixing chamber is closed. When the sealing means are opened sucking operation enables the elimination of humidity
like steam above the mixing chamber and avoids said humidity to enter inside the metering device generally placed
above the mixing chamber particularly for powder soluble products. When the sealing means close the mixing chamber,
flowing back operation enables an improved recovery of the aromas in the final receptacle.
[0021] According to a preferred embodiment of the process of the present invention, during the closure of the top
opening of the mixing chamber with the sealing means, the sealing means are first brought above the top opening and
secondly moved vertically to enter in contact with the top opening and close it. The movement for bringing the sealing
means above the top opening can be a rotational or translation movement.
[0022] The device and the method of the present invention enable the production of beverage, especially coffee
beverage, presenting enhanced in-cup aroma by directing most of the steam and vapors produced during the mixing
operation into the final cup, in particular compounds like sulphur compounds and aldehydes that are representative of
coffee aroma and that are more perceptible by the consumer.
[0023] Embodiments of the invention are described in more with reference to the accompanying drawings, wherein :
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Figure 1 depicts a device not according to the present invention in its stand by state.
Figures 2 to 6 schematically depict the preparation of a beverage not according to the present invention by the
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means of said device.
Figure 7 is a top view of the preferred embodiment of the sealing means.
Figure 8 is a section view of the sealing means of Figure 7 according to XX’.
Figures 9A to 11 B schematically depict the preparation of a beverage according to the present invention.
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[0024] It should be understood that the figures are merely schematic and are not drawn to scale. It should also be
understood that the same reference numerals are used throughout the Figures to indicate the same or similar parts.
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Figure 1 depicts a device for preparing beverages comprising a mixing chamber 1 presenting a top opening 4, a
diluent inlet 5 and a beverage outlet opening 6. The device also comprises a metering device 3 comprising a hopper
full of soluble ingredient like coffee powder 2 and a motor 9 to activate the introduction of a soluble ingredient dose
inside the mixing chamber 1 trough its top opening 4. The device comprises a cover 7 that can slide above and
away from the top opening 4 of the mixing chamber 1 further to the action of a motor 10. The beverage outlet opening
6 opens in a whipping chamber 8 comprising a whipper to help in the dissolution the foaming of the beverage. Figure
1 corresponds to the stand-by step of the device of the invention : the metering device 3 is not activated, the mixing
chamber top opening 4 is opened and no diluent is introduced in the mixing chamber 1.
Figure 2 illustrates the dosing step of the preparation of a beverage with the device : the motor 9 of the metering
device 3 pushes a dose of soluble ingredient 2 in the mixing chamber top opening 4.
Figure 3 illustrates the mixing chamber sealing step : the motor 9 of the metering device has been put off. The motor
10 for moving the cover 7 is activated in order to close the mixing chamber top opening 4.
Figure 4 illustrates the dissolution step : the diluent is introduced through the inlet 5 inside the mixing chamber to
dissolve the soluble ingredient. The dissolved ingredient escapes from the mixing chamber 1 through the outlet 6.
Figure 5 illustrates the delivery step : the dissolved ingredient is eventually whipped in the whipping chamber 8 and
delivered in a receptacle 11. Due to the closure of the mixing chamber 1 by the cover 7 and the depression induced
by the evacuation of the beverage in the receptacle 11 and eventually by the operation of the whipper, the aromas
12 of the beverage that are still inside the mixing chamber are sucked with the beverage flow.
Figure 6 illustrates the mixing chamber opening step : once the beverage has been totally evacuates in the receptacle,
then the motor 10 of the cover is activated to move the cover 7 away from the mixing chamber top opening 4 in
order to come back to the stand-by step as illustrated in Figure 1.
Figures 7 and 8 is depicts sealing means according to the preferred embodiment of the present invention. Said
sealing means are composed of a soft part 13 which is a disc of soft material and of a rigid part 14 which is made
of two rings of a rigid material encircling the disc of soft material to hold it.
Figure 9A depicts a device for preparing beverages as described in Figure 1 except that the sealing means 7
correspond to the embodiment defined in Figures 7 and 8. Figure 9B is a top view of the device of Figure 9A
representing the relative positions of the sealing means 7 and of the mixing chamber top opening 4. In this standby position of the device, the sealing means 7 are placed away from the mixing chamber top opening 4 so as to let
this opening free for the next step of introduction of a soluble ingredient dose inside the mixing chamber 1.
Figures 10A, 10B, 11A and 11B depict the movement of the sealing means of the device of Figure 9A during the
mixing chamber sealing step (equivalent to Figure 3 step). The sealing step implements two movements of the
sealing means 7 : first the sealing means are rotated by motor 10 so that they are brought above the mixing chamber
top opening 4 (Fig. 10A and 10B) and then the sealing means are moved downward by motor 10 so that the soft
material part 13 of the cover stick to the edge of the mixing chamber and hermetically close it. The inner surface
defined by the two rings 14 of rigid material of the sealing means 7 is designed as to be greater than the outer
diameter of the mixing chamber top opening 4 so that the soft part 13 of the sealing means can easily cover the
whole top opening 4 and contact all the top opening edges.
EXAMPLE
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[0025] Coffee beverages were prepared using either a coffee machine integrating a device according to the present
invention and according to the method of the present invention or with a coffee machine of the state of the art.
[0026] The both coffee machines were identical except that the coffee machine according to the present invention
included a cover for the mixing chamber and a mechanism to close the mixing chamber once the coffee powder was
introduced inside the mixing chamber and before the diluent was introduced inside the mixing chamber. The cover was
not removed from the mixing chamber opening before the beverage was totally evacuated from the mixing chamber.
The cover was made of one full piece and its connection with the mixing chamber was hermetic from the step of the
introduction of the diluent until the complete evacuation of the coffee from the mixing chamber inside the receptacle.
The coffee machine did not present any cover above the mixing chamber.
[0027] The coffee preparation consisted in both cases in introducing 1,25 g of the same soluble coffee powder inside
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the mixing chamber and dissolving it with 23 ml of hot water. Immediately after the coffee beverage had dropped inside
the receptacle, the receptacle was hermetically closed and is cooled in cold water. Before the coffee preparation, deuterium or C-13 were added in the bottom of the receptacle to quantify the aroma compounds and cysteine was added
to release matrix bound thiols.
[0028] The aromas of the coffee beverage inside the receptacle were analysed by combined solid phase microextraction and gas chromatography. The results are presented in Table 1.
Table 1
Aroma nature
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Invention
methanethiol
0,82
1,45
175 %
dimethyl sulfide
0,80
1,39
174 %
furfurylthiol
2,05
3,20
156%
3-mercapto-3methylbutylformate
0,46
0,49
107 %
sulfur compounds
4,13
6,53
158 %
acetaldehyde
620,39
776,69
125%
2-methylpropanal
1,00
1,84
184 %
3-methylbutanal
9,33
12,48
134 %
aldehydes
630,72
791,01
125 %
N-methylpyrrole
20,93
22,68
108 %
2,3-pentanedione
0,68
0,98
143 %
diketones
0,68
0,98
143 %
2-3-5-trimethylpyrazine
4,42
4,58
104 %
pyrazines
4,42
4,58
104 %
high volatiles aroma
compounds (methanethiol +
dimethyl sulfide + 2methylpropanal + 3methylbutanal)
11,95
17,15
144 %
medium volatiles aroma
compounds (3-mercapto-3methylbutylformate +
acetaldehyde + Nmethylpyrrole + 2,3pentanedione)
642,46
800,85
125 %
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Increase of aroma concentration
(%)
Prior art
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Aroma concentration (ppm/dry matter)
[0029] The results of Table 1 show that significant higher contents of key sulphur compounds and aldehydes, that are
known to contribute significantly to the coffeeness, are obtained with the coffee machine implementing a cover on the
mixing chamber according to the present invention.
Claims
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1.
Device for the preparation of a beverage comprising :
- a mixing chamber (1) for mixing a soluble ingredient (2) and a diluent, said chamber comprising :
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. a top opening (4),
. a diluent inlet opening (5),
. a beverage outlet opening (6),
- sealing means (7), said sealing means being able to seal the top opening (4) of the mixing chamber (1) and
to prevent any fluid from leaving the mixing chamber through said sealing means wherein :
- the sealing means are a cover, and
- the cover and the mixing chamber are able to move relative to each other so that in a first position the top
opening of the mixing chamber is opened and in a second position the cover closes the top opening of the
mixing chamber, and
- the cover is composed of at least one soft material part (13) said soft material being sufficiently elastic to
establish a tight contact with the mixing chamber top opening in order to hermetically seal the mixing chamber
when the cover is pushed against the mixing chamber.
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2.
Device according to Claim 1 wherein the cover is rotationally and/or linearly moveable from one position to the other.
3.
Device according to Claim 1 or 2, wherein the soft material is chosen between at least one of the following materials :
Ptasmol®, silicone, elastomer, rubber, a thermoplastic rubber or elastomer (TPE).
4.
Device according to Claims 1 to 3 wherein the cover comprises a rigid material part (14) for supporting the soft material.
5.
Device according to Claim 4 wherein the soft material part (13) is hold between two frames of rigid material (14).
6.
Device according to Claims 4 or 5 wherein the rigid material is chosen between at least one of the following materials :
HDPE, LDPE, POM, PP, nylon.
7.
Device according to Claims 1 and 4 wherein a mechanism for moving the cover is fixed on the rigid material part (14).
8.
Device according to any previous claims wherein the mixing chamber is connected to a fan able to suck or to flow
back gaseous fluids present inside the mixing chamber.
9.
A method for preparing a beverage with a device according to any of Claims 1 to 8 comprising at least the following
steps:
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- introducing a soluble ingredient (2) inside the mixing chamber (1) through the top opening (4) of the mixing
chamber (1),
- closing the top opening (4) of the mixing chamber with the sealing means (7),
- introducing a diluent inside the mixing chamber so that it mixes with the soluble ingredient,
- evacuating the mixed product from the mixing chamber through the beverage outlet opening (6),
- opening the top opening (4) of the mixing chamber.
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10. A method according to Claim 9 wherein the top opening of the mixing chamber is opened once the mixed product
is totally evacuated from the mixing chamber.
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11. A method according to any of Claims 9 or 10, wherein the device comprises a fan connected to the inside of the
mixing chamber, said fan sucking gaseous fluids from the mixing chamber when the mixing chamber is opened and
said fan flowing back gaseous fluids from the mixing chamber to the beverage outlet opening of the mixing chamber
when the mixing chamber is closed.
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12. A method according to any of Claims 9 to 11, wherein during the closure of the top opening (4) of the mixing chamber
with the sealing means (7), the sealing means are first brought above the top opening (4) and secondly moved
vertically to enter in contact with the top opening (4) and close it.
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Patentansprüche
1.
Vorrichtung zur Zubereitung eines Getränks, mit:
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- einer Mischkammer (1) zum Mischen einer löslichen Zutat (2) und eines Verdünnungsmittels, wobei die Kammer
Folgendes umfasst:
• eine obere Öffnung (4),
• eine Verdünnungsmittel-Einlassöffnung (5),
• eine Getränkeauslassöffnung (6),
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- Dichteinrichtungen (7), wobei die Dichteinrichtungen in der Lage sind, die obere Öffnung (4) der Mischkammer
(1) abzudichten und zu verhindern, dass Flüssigkeit aus der Mischkammer durch die Dichteinrichtungen austritt,
wobei:
- die Dichteinrichtungen aus einer Abdeckung bestehen und
- die Abdeckung und die Mischkammer in der Lage sind, sich relativ zu einander derart zu bewegen, dass in
einer ersten Position die obere Öffnung der Mischkammer geöffnet wird und in einer zweiten Position die
Abdeckung die obere Öffnung der Mischkammer verschließt, und
- die Abdeckung aus mindestens einem weichen Materialteil (13) besteht, wobei das weiche Material ausreichend
elastisch ist, um einen dichten Kontakt mit der oberen Öffnung der Mischkammer herzustellen, um die Mischkammer hermetisch zu verschließen, wenn die Abdeckung gegen die Mischkammer gedrückt wird.
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2.
Vorrichtung gemäß Anspruch 1, wobei die Abdeckung von einer Position in die andere drehbar und/oder linear
beweglich ist.
3.
Vorrichtung gemäß Anspruch 1 oder 2, wobei das weiche Material aus mindestens einem der folgenden Materialien
ausgewählt ist: Plasmon®, Silikon, Elastomer, Gummi, einem thermoplastischen Gummi oder Elastomer (TPE).
4.
Vorrichtung gemäß Anspruch 1 bis 3, wobei die Abdeckung einen steifen Materialteil (14) zur Aufnahme des weichen
Materials umfasst.
5.
Vorrichtung gemäß Anspruch 4, wobei der weiche Materialteil (13) zwischen zwei Rahmen aus steifem Material
(14) gehalten wird.
6.
Vorrichtung gemäß Anspruch 4 oder 5, wobei das steife Material aus mindestens einem der folgenden Materialien
ausgewählt ist: HDPE, LDPE, POM, PP, Nylon.
7.
Vorrichtung gemäß Anspruch 1 und 4, wobei auf dem steifen Materialteil (14) ein Mechanismus zum Bewegen der
Abdeckung befestigt ist.
8.
Vorrichtung gemäß einem der vorhergehenden Ansprüche, wobei die Mischkammer mit einem Gebläse verbunden
ist, das innerhalb der Mischkammer vorliegende, gasförmige Media ansaugen oder rückführen kann.
9.
Verfahren zur Zubereitung eines Getränks mit einer Vorrichtung gemäß einem der Ansprüche 1 bis 8, das mindestens
die folgenden Schritte umfasst:
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- Einführen einer löslichen Zutat (2) in die Mischkammer (1) durch die obere Öffnung (4) der Mischkammer (1),
- Verschließen der oberen Öffnung (4) der Mischkammer mit den Dichteinrichtungen (7),
- Einführen eines Verdünnungsmittels in die Mischkammer, so dass es sich mit der löslichen Zutat vermischt,
- Abziehen des gemischten Produkts aus der Mischkammer durch die Getränkeauslassöffnung (6),
- Öffnen der oberen Öffnung (4) der Mischkammer.
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10. Verfahren gemäß Anspruch 9, wobei die obere Öffnung der Mischkammer geöffnet wird, sobald das gemischte
Produkt vollständig aus der Mischkammer abgezogen ist.
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11. Verfahren gemäß einem der Ansprüche 9 oder 10, wobei die Vorrichtung ein mit dem Inneren der Mischkammer
verbundenes Gebläse aufweist, wobei das Gebläse gasförmige Media aus der Mischkammer absaugt, wenn die
Mischkammer geöffnet wird, und das Gebläse gasförmige Media aus der Mischkammer zu der Getränkeauslassöffnung der Mischkammer zurückführt, wenn die Mischkammer geschlossen ist.
12. Verfahren gemäß einem der Ansprüche 9 bis 11, wobei während des Verschließens der oberen Öffnung (4) der
Mischkammer mit den Dichteinrichtungen (7) Letztere zunächst über die oberen Öffnung (4) gebracht werden und
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danach senkrecht bewegt werden, so dass sie mit der oberen Öffnung (4) in Kontakt treten und diese verschließen.
Revendications
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1.
Dispositif pour la préparation d’une boisson comprenant :
- une chambre de mélange (1) pour mélanger un ingrédient soluble (2) et un diluant, ladite chambre comprenant :
. une ouverture supérieure (4),
. une ouverture d’entrée de diluant (5),
. une ouverture de sortie de boisson (6),
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- des moyens d’obturation (7), lesdits moyens d’obturation étant aptes à obturer l’ouverture supérieure (4) de
la chambre de mélange (1) et à empêcher tout fluide de sortir de la chambre de mélange par lesdits moyens
d’obturation, dans lequel :
- les moyens d’obturation sont une couverture, et
- la couverture et la chambre de mélange sont susceptibles de se déplacer l’un par rapport à l’autre de sorte
que, dans une première position, l’ouverture supérieure de la chambre de mélange est ouverte et, dans une
deuxième position, la couverture ferme l’ouverture supérieure de la chambre de mélange, et
- la couverture est composée d’au moins une partie en matériau souple (13), ledit matériau souple étant suffisamment élastique pour établir un contact étanche avec l’ouverture supérieure de la chambre de mélange de
manière à sceller hermétiquement la chambre de mélange lorsque la couverture est poussée contre la chambre
de mélange.
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2.
Dispositif selon la revendication 1, dans lequel la couverture est mobile en rotation et/ou en translation d’une position
à l’autre.
3.
Dispositif selon les revendications 1 ou 2, dans lequel le matériau souple est choisi parmi au moins l’un des matériaux
suivants : Plasmol®, silicone, élastomère, caoutchouc, un caoutchouc thermoplastique ou un élastomère thermoplastique (TPE).
4.
Dispositif selon les revendications 1 à 3, dans lequel la couverture comprend une partie en matériau rigide (14)
destiné à supporter le matériau souple.
5.
Dispositif selon la revendication 4, dans lequel la partie en matériau souple (13) est maintenue entre deux cadres
de matériau rigide (14).
6.
Dispositif selon les revendications 4 ou 5, dans lequel le matériau rigide est choisi parmi au moins l’un des matériaux
suivants : PEHD, PEBD, POM, PP, nylon.
7.
Dispositif selon les revendications 1 et 4, dans lequel un mécanisme destiné à déplacer la couverture est fixé sur
la partie en matériau rigide (14).
8.
Dispositif selon l’une quelconque des revendications précédentes, dans lequel la chambre de mélange est reliée à
un ventilateur susceptible d’aspirer ou de refouler des fluides gazeux présents à l’intérieur de la chambre de mélange.
9.
Procédé destiné à préparer une boisson avec un dispositif selon l’une quelconque des revendications 1 à 8 comprenant au moins les étapes suivantes :
30
35
40
45
50
55
- introduction d’un ingrédient soluble (2) à l’intérieur de la chambre de mélange (1) à travers l’ouverture supérieure
(4) de la chambre de mélange (1),
- fermeture de l’ouverture supérieure (4) de la chambre de mélange avec des moyens d’obturation (7),
- introduction d’un diluant à l’intérieur de la chambre de mélange de sorte qu’il se mélange avec l’ingrédient
soluble,
- évacuation du produit mélangé de la chambre de mélange à travers l’ouverture de sortie de boisson (6),
- ouverture de l’ouverture supérieure (4) de la chambre de mélange.
8
EP 2 285 258 B1
10. Procédé selon la revendication 9, dans lequel l’ouverture supérieure de la chambre de mélange est ouverte une
fois que le produit mélangé est totalement évacué de la chambre de mélange.
5
10
11. Procédé selon l’une quelconque des revendications 9 ou 10, dans lequel le dispositif comprend un ventilateur relié
à l’intérieur de la chambre de mélange, ledit ventilateur aspirant des fluides gazeux depuis la chambre de mélange
lorsque la chambre de mélange est ouverte et ledit ventilateur refoulant des fluides gazeux depuis la chambre de
mélange vers l’ouverture de sortie de boisson de la chambre de mélange lorsque la chambre de mélange est fermée.
12. Procédé selon l’une quelconque des revendications 9 à 11, dans lequel au cours de la fermeture de l’ouverture
supérieure (4) de la chambre de mélange avec les moyens d’obturation (7), les moyens d’obturation sont premièrement amenés au-dessus de l’ouverture supérieure (4) et deuxièmement déplacés verticalement pour entrer en
contact avec l’ouverture supérieure (4) et la fermer.
15
20
25
30
35
40
45
50
55
9
EP 2 285 258 B1
10
EP 2 285 258 B1
11
EP 2 285 258 B1
12
EP 2 285 258 B1
13
EP 2 285 258 B1
14
EP 2 285 258 B1
REFERENCES CITED IN THE DESCRIPTION
This list of references cited by the applicant is for the reader’s convenience only. It does not form part of the European
patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be
excluded and the EPO disclaims all liability in this regard.
Patent documents cited in the description
•
US 5514111 A [0004]
•
15
US 3739709 A [0004]