FR3096356A1 - Beverage dispensing device - Google Patents

Abstract

The invention relates to a beverage dispensing device (18) comprising a base (19) intended to be fixedly mounted on a reservoir containing a fluid, a fluid dispensing nozzle (25) movable in translation along an axis relative to the base, the nozzle (25) comprising a sampling part and a distribution part (37) of the fluid, said sampling part being able to actuate the opening of a valve of said reservoir by translational movement of said sampling part , the sampling part and the distribution part (37) being fluidly connected by a fluid circulation channel opening at the level of the sampling part and of the distribution part (37), respectively by at least a first opening and at the at least one second opening, the nozzle (25) comprising a bearing surface (32), the dispensing device (18) further comprising a lever (43) capable of pivoting about an axis fixed relative to the base ( 19), said lever (43) comprising an actuating part (45) and a bearing part (44) bearing on said bearing surface (32) of the nozzle (25), so that the pivoting of the lever ( 43) actuates the translational movement of the nozzle (25).

Description

Description Title of the invention: Beverage dispensing device Technical field of the invention

The invention relates to a device and a beverage dispensing assembly, such as beer, for example.

State of the prior art

[0002] Document WO 2016/166475 in the name of the Applicant discloses a beverage dispensing assembly for filling a container, in particular a glass, via a nozzle passing through a closing element housed in the bottom of the container. .

[0003] The nozzle is connected to a reservoir, for example a barrel, via a solenoid valve that can be controlled between an open position allowing the container to be filled, and a closed position.

[0004] Such a dispensing assembly is intended for professionals and has a relatively high cost.

[0005] There is currently a need to be able to offer a dispensing assembly adapted to the needs of the general public and having a lower cost.

Presentation of the invention

To this end, the invention relates to a beverage dispensing device comprising a base intended to be fixedly mounted on a reservoir containing a fluid, a fluid dispensing nozzle movable in translation along an axis relative to the base, the nozzle comprising a sampling part and a part for distributing the fluid, said sampling part being capable of actuating the opening of a valve of said reservoir by displacement in translation of said sampling part, the sampling part and the part distribution being fluidically connected by a fluid circulation channel opening at the level of the withdrawal part and the distribution part, respectively by at least one first opening and at least one second opening, the nozzle comprising a bearing surface, the dispensing device further comprising a lever capable of pivoting about an axis fixed relative to the base, said lever comprising an actuating part and a bearing part bearing on said bearing surface of the nozzle , so that the pivoting of the lever actuates the translational movement of the nozzle.

100071 The lever and the bearing surface thus act like a cam, the contact zone between the lever and the bearing surface moving gradually when the lever is actuated.

The actuation of the lever, that is to say its rotation around the fixed axis, causes the axial displacement in translation of the nozzle and, consequently, the opening or closing of the valve of the tank with which cooperates the sampling party.

[0008] The nozzle may comprise at least a first part defining a first part of the fluid circulation channel and forming the sampling part, and at least a second part defining a second part of the fluid circulation channel and forming the distribution, the first part and the second part of the nozzle being assembled in a sealed manner to one another.

[0009] The second part can be a standard element, marketed with the reservoir and reused to form the second part of the nozzle.

[0010] The nozzle may comprise at least a third part defining a third part of the circulation channel and mechanically and fluidly connecting the first and second parts.

[0011] The different parts of the busk can be fixed relative to each other by snap-fastening.

Such a structure facilitates the manufacture, assembly and cleaning of the nozzle.

[0013] It will be noted that the structure and operation of a tank equipped with a valve is known from the prior art, for example from document EP 2 001 790.

[0014] Such a valve, also called a valve, is movable in translation between a closed position and an open position.

An elastic return means, for example a compression spring, returns the valve to the closed position.

[0015] The force exerted by the return means on the valve can also allow the return of the nozzle to a rest position of the nozzle, in which no force is exerted on the lever.

As a variant, the nozzle can be returned to this rest position by a return means distinct from that associated with the valve of the tank.

[0016] The reservoir may conventionally comprise a dip tube extending into the reservoir between a first end connected to the orifice closed off by the valve and a second end located close to the bottom of the reservoir, opposite the valve.

In this way, the drink is taken from the bottom of the reservoir then rises through the dip tube before escaping through the orifice located at the top of the reservoir, when the valve is open.

[0017] The nozzle, the base and/or the lever can be made of plastic, for example by injection molding.

[0018] The dispensing part may comprise a free end of hemispherical, frustoconical or ogival shape.

[0019] The invention also relates to a beverage dispensing assembly comprising - a container comprising an orifice equipped with a closure member, - a beverage dispensing device of the aforementioned type, the fluid dispensing part being introduced in the internal volume of the container through the closure member so that the second opening of the dispensing part of the nozzle is located in the internal volume of the container, the container comprising a support part coming to bear on the actuating part of the lever so as to allow the pivoting of the lever by translational movement of the container.

When the container is moved in translation so as to actuate the lever, the point of contact between the container and the actuating part moves as the container moves, like a meat.

[0021] The actuation part of the lever may comprise a convex support edge.

[0022] Such a structure makes it possible to limit friction during the sliding of the fulcrum of the container on the actuating part of the lever.

The container may include a bottom and a side wall delimiting the internal volume of the container, the closure member being formed in the bottom of the container, said bearing portion of the container being formed by the bottom.

[0024] The container may be similar to that described in document WO 2016/0166475 in the name of the Applicant.

[0025] The container may comprise axial stops located on the internal surface of the side wall of the container, so that the bottom of a first container comes to bear axially on the stops of a second container when the two containers are stacked. .

The stops can be formed by ribs.

The ribs can be evenly distributed around the circumference of the side wall.

Each rib can extend axially from the bottom of the tank.

Each rib may have a rounded section.

[0027] The lever may have a general U-shape comprising a base from which extend two support arms, the pivot axis of the lever being formed in the base, the actuating part of the lever being formed by the branches, the bearing part of the lever being formed by median zones, located between the pivot axis and the actuating part.

[0028] The assembly may comprise a tank intended to house the tank and a lid closing the tank, the dispensing device being mounted at the level of the lid so that the sampling part of the nozzle extends into the internal volume of the tank so as to be able to cooperate with a valve of the tank and so that the dispensing part of the nozzle extends outside the tank so as to be able to be introduced into the container through the closure member.

The side wall can be cylindrical, the bottom being circular.

The cylindrical side wall and / or the bottom may comprise a material forming a thermal insulator.

The cover may include means for centering the container, in particular means for centering the part forming the bottom of the container.

Said centering means may comprise a housing or an opening formed in the cover and whose shape corresponds substantially to the bottom of the container.

Such centering means facilitate the positioning of the dispensing part of the nozzle relative to the container.

[0032] The second opening of the dispensing part of the nozzle may have a determined angular orientation around an axis of the dispensing part, the nozzle and/or the lid comprising means for angular positioning of the nozzle relative to the lid.

[0033] Said angular positioning means may comprise a projecting part extending from the nozzle or from an element coupled in rotation to the nozzle, cooperating with a recessed part of complementary shape made in the lid, or vice versa.

Said protruding part and said recessed part can extend along the axis of translation of the nozzle so as to provide coupling regardless of the axial position of the nozzle relative to the lid.

The closure member can be offset relative to the axis of the container, said container comprising means for angular positioning of the container relative to the cover or relative to the nozzle.

[0035] Said angular positioning means may comprise a recessed part formed in the container and cooperating with a projecting part extending from the cover or from the nozzle, or vice versa.

[0036] Said recessed part and said protruding part can extend along the axis of displacement of the container relative to the lid or relative to the base on which the lever is hinged, so as to ensure a rotational coupling. regardless of the axial position of the container.

[0037] The tank may comprise a bottom and a side wall delimiting an internal volume intended to accommodate the reservoir, said side wall and/or the bottom comprising centering and positioning means capable of centering and positioning the reservoir in the internal volume of the tank.

The centering and positioning means may comprise ribs extending for example along the axis of the tank and regularly distributed around this axis.

The number of ribs is for example equal to three.

Such ribs make it possible to center the tank on the axis of the tank, in particular when the latter has a generally cylindrical shape.

[0039] The centering and positioning means may comprise an annular flange formed at the bottom of the tank, the tank being intended to come to rest on said flange, along the axis of the tank.

Such a rim makes it possible to position the reservoir axially, so as to adjust its axial position in particular with respect to the sampling part of the nozzle.

[0040] The cover may comprise at least one orifice communicating with the internal volume of the tank, located around the area intended to accommodate the container.

Several orifices of this type can be distributed around the axis of the lid.

These orifices are intended to allow the flow of the drink into the tank in the event of overflow of the container, for example.

The tank may include cooling means distributed at the side wall or the bottom of the tank, housed in the internal volume of the tank.

[0042] The cooling means can be blocks filled with a heat transfer material, for example a pocket or a reservoir containing a heat transfer liquid such as water.

These blocks are capable of being cooled beforehand before introduction into the tank.

[0043] A circular block can be housed in the bottom of the tank.

The block located at the bottom of the tank can form part of the means for positioning and centering the tank.

In particular, part of the tank, for example the bottom of the tank, can bear axially on the block located at the bottom of the tank.

Blocks can be distributed over the inner surface of the side wall, for example between the aforementioned ribs of the centering and positioning means.

Brief description of figures

[0046] [fig.1] is a perspective view of a beverage dispensing assembly according to one embodiment of the invention,

[0047] [fig.2] is an exploded view, in perspective, of the assembly,

[0048] [fig.3] is an axial sectional view of the assembly,

[0049] [fig.4] is a perspective view of the container,

[0050] W8.51 is a top view of the container,

[0051] [fig.6] is a perspective view, from above, of the tank,

[0052] [fig.7] is an axial sectional view illustrating the lid, the container and the dispensing device,

[0053] [fig.8] is a perspective view of the dispensing device,

[0054] [fig.9] is a perspective view of the base,

[0055] [fig.10] is a perspective view, from above, of part of the nozzle, in particular the sampling part,

[0056] [fig.11] is a bottom view of the part of the nozzle shown in Figure 10

[0057] [fig.12] is a perspective view of part of the nozzle forming in particular the delivery part,

[0058] [fig.13] is a perspective view of an intermediate part of the nozzle, 6 100591 Ifie.141 is a perspective view illustrating the assembly of the parts of the nozzle of Figures 12 and 13,

[0060] [fig.15] is a perspective view illustrating the assembly of the parts of the nozzle of Figures 12 and 13,

[0061] [fig.16] is a perspective view of the lever,

[0062] [fig.17] is a side view illustrating a container and the dispensing device, in a closed position of the valve,

[0063] [fig.18] is a side view illustrating a container and the dispensing device, in an open position of the valve,

[0064] [fig.19] is a perspective view of part of the dispensing device according to another embodiment of the invention,

[0065] [fig.20] is an exploded perspective view of part of the dispensing device of Figure 19,

[0066] [fig.21] is an exploded view, in perspective, of the nozzle of the dispensing device of Figure 19,

[0067] [fig.22] is a perspective view of an upstream part of the nozzle of the dispensing device of figure 19.

Detailed description of the invention

[0068] Figures 1 to 18 illustrate a beverage dispensing assembly 1 according to one embodiment of the invention.

Said assembly 1 comprises a tank 2 intended to house a commercial reservoir 3, for example a cylindrical barrel 3 containing beer.

The tank 2 has a cylindrical side wall 4 and a bottom 5.

The side wall 4 and the bottom 5 comprise, in their thickness, a material forming a thermal insulator.

As seen in Figure 6, ribs 6 extending along the axis X of the tank 2 are formed at the inner surface of the side wall 4.

The ribs 6 are here three in number and are regularly distributed over the circumference.

[0072] The terms axial, radial and circumferential are defined with respect to Faxe X.

[0073] The dimensions of the ribs 6 are adapted so as to allow the tank 3 to be centered, the outer wall of which bears on the vertices, that is to say the radially internal parts, of the ribs 6.

[0074] Blocks of heat transfer material 7, 8, comprising an envelope or a tank containing a heat transfer liquid such as water, are housed in the tank 2.

Blocks 7, 8 are cooled beforehand before insertion into tank 2.

[0075] In particular, a block 7 of generally circular shape is mounted at the bottom of the tank 2, the bottom of the tank 3 bearing against the upper surface of the circular block 7.

Furthermore, peripheral blocks 8 of concave shape are mounted in the tank 2, 7 between the side wall 4 of the tank 2 and the side wall of the tank 3.

The peripheral blocks 8 are mounted circumferentially between the ribs 6.

The side wall 4 of the tank 2 is equipped with a handle 9 fixed on studs 10 of the tank 2.

The handle 9 facilitates the transport of the assembly 1.

[0078] The assembly 1 also comprises a cover 11 allowing the open upper end of the tank 2 to be closed.

The lid 11 has two lateral gripping zones 12 or handles, formed here by diametrically opposite recessed zones 12 of the lid 11.

The cover 11 comprises a housing or a central circular opening 13 of axis X.

Orifices 14 are formed around the central opening 13, the orifices opening 14 into the internal volume 15 of the tank 2.

The cover 11 further comprises a rib 16 extending axially and formed on the periphery of the central opening 13.

The cover 11 further comprises a groove 17 extending axially and formed on the periphery of the central opening 13.

The groove 17 is located for example diametrically opposite with respect to the rib 16.

The assembly 1 further comprises a beverage dispensing device 18, located in the internal volume 15 of the tank 2, close to the reservoir 3.

[0081] The device 18 comprises a base 19, more particularly visible in Figure 9, fixedly mounted on the upper end of the tank 3.

The base 19 comprises a body 20 in which is formed a central recess 21, a central hole 22 of axis X and lateral pivot zones 24, located on either side of a median plane passing through the X axis.

The device 18 also comprises a nozzle 25 composed of three distinct parts, namely an upstream part 26, a middle part 27 and a downstream part 28.

The terms upstream and downstream are defined with respect to the direction of circulation of the liquid through the nozzle 25.

The upstream part 26, illustrated in Figures 10 and 11 comprises a body 29 in which is formed a liquid circulation channel 30.

A sampling part 31 in the form of a hollow rod 31 of axis X extends from the body 29.

[0085] The free end of the rod 31 is intended to press on a valve or a valve, not shown, of the tank 3.

When the valve is pushed downwards, against a return force exerted by a return spring of reservoir 3, then the valve is in the open position and the liquid contained in reservoir 3 can escape through the orifice previously closed by the valve, as is known per se.

Conversely, when no force is exerted downwards by the rod 31, the valve and the upstream part 26 are biased upwards by the return spring, so as to close the opening and prevent the flow of liquid.

The valve and the upstream part 26 can also be biased upwards due to the pressure of the gas contained in the reservoir 3.

The channel of the sampling part 31 opens at one end at the level of the free end of the hollow rod, and at the other end in the channel 30 of the body 29.

The body 29 has a planar surface 32, facing upwards, extending in the radial plane.

Remember that the radial plane is a plane perpendicular to the X axis.

[0087] The middle part 27, illustrated in Figure 13, comprises a body 33 comprising a channel having a first part 34 formed in a connector 35, and a second part 36 delimited by a latching edge 37.

The connector 35 is tightly engaged by snap-fastening in the channel 30 of the body 29 of the upstream part 26.

[0088] The downstream part 28, illustrated in FIG. 14, comprises a body 36 from which extends a hollow elongated dispensing part 37, with an axis parallel to the axis X, delimiting a first part of a channel , opening into a second part 38 of the channel, extending radially and delimited by a latching edge 39 capable of cooperating with the latching edge 37 of the middle part 27, so as to ensure leaktight fixing of the downstream part 28 on the middle part 28, as illustrated in Figures 14 and 15.

The dispensing part 37 has an opening 40 close to its free end.

The opening 40 is oriented in a radial plane and along an axis forming an angle n with the radial direction (FIG. 14), that is to say with the straight line formed in the radial plane and passing through the center of the part distribution 37 and by the X axis.

The free end 41 of the dispensing part 37 is hemispherical, frustoconical or ogive-shaped.

[0090] An elongated rotational coupling part 42 extends axially from the body 36, on the same side as the distribution part 37, said rotational coupling part 42 being parallel to the distribution part 37.

[0091] The rotational coupling part 42 is engaged in the groove 17 of the cover 11, so as to ensure the correct angular positioning of the cover 11 relative to the nozzle 25, as is best seen in FIG.

The device 18 further comprises a generally U-shaped lever 43, better visible in Figure 16, comprising a base 44 from which extend two arms 45.

The base 44 comprises two coaxial side studs 46 which engage in the lateral pivot zones 24 of the base 19 so as to allow the pivoting of the lever 43 with respect to the base 19, around the axis passing through the studs 46 .

The upper edges 47 of the branches 45 each have a convex rounded shape, intended to form an actuation zone.

The lever 43 rests on the flat surface 32 of the upstream part 26 of the nozzle 25, in a zone of the base 44 located between the pivot axis of the studs 46 and the branches 45.

The pivoting of the lever 43 thus causes the displacement in translation along the axis 9 X of the nozzle 25.

The assembly 1 also comprises a container 48, better visible in Figures 4 and 5, comprising a circular bottom 49 and a side wall 50 delimiting an internal volume 51.

The bottom 49 includes a deformable self-sealing elastomer closure member 53, offset from the axis of the container.

The side wall 50 has axial stops formed by ribs 54 extending from the bottom 49 along the axis of the container 48, for example three ribs 54 regularly distributed over the circumference.

The ends of the ribs 54 opposite the bottom 49 form axial stops making it possible, in the event of stacking of containers 48, to maintain the bottoms 49 of the containers 48 spaced from each other.

[0097] The side wall 50 further comprises an external recessed zone 55, extending parallel to the axis of the container 48 from the bottom 49.

The hollow zone 55 has a flared shape in the axial direction, said hollow zone 55 widening in the direction of the bottom 49.

Said recessed area 55 forms a projection in the internal volume 51 of the container 48.

[0098] The recessed area is diametrically opposed to the closure member 53.

The length of the recessed or protruding zone 55 is greater than the length of the grooves 54.

Thus, when stacking several containers 48, these must be aligned and positioned at an angle relative to each other so that the recessed areas 55 fit into each other, so that the bottoms 49 can come to rest on the free ends of the ribs 54.

In order to fill one of the containers 48, a user can grasp the container 48 and place the bottom 49 at the level of the central opening 13 of the lid 11 by aligning the rib 16 of the lid 11 with the recessed area 55 of container 48.

In this angular position of the container 48 relative to the lid 11, the closure member 53 is also aligned with the dispensing part of the nozzle 25.

The user can then push the container 48 into the opening 13 so that the dispensing part 37 enters the internal volume Si of the container 48 through the closure member 53 which deforms to allow such introduction.

It will be noted that the closure member 53 is designed to provide a seal between the container 48 and the dispensing part 37 of the nozzle 25.

When the dispensing part 37 is introduced into the internal volume Si of the container 48, the bottom 49 of the container 48 comes into contact with the upper edges 47 of the arms of the lever 43, as illustrated in FIG. 17.

From this position, when the user continues the descent movement of the container 48, the axial force exerted on the container 48 exerts a force on the lever 43 which tends to make it pivot around its axis 46, as shown in Figure 18.

This causes a downward translational movement of the nozzle 25, so that the sampling rod 31 presses on the valve of the tank 3 and moves it towards its open position, against the return force exerted by the corresponding return spring and/or against the force exerted by the gas contained in tank 3.

[0101] The liquid contained in the tank 3 then rises in the channel of the nozzle 25, under the effect of a pressurized gas contained in the tank 3 or delivered using appropriate additional means, from upstream downstream, until it opens into the internal volume 51 of the container 48 through the opening 40 of the dispensing part 37.

It will be noted that, when the valve is opened, the opening 40 is entirely located in the internal volume 51 of the container 48.

[0102] In order to stop the flow of liquid, the user releases the pressure exerted axially on the container 48, so that the comb 25 and the lever 43 are returned to their position illustrated in FIG. the valve.

The full container 48 can then be removed upwards, the self-sealing element 53 sealing the bottom 49 of the container 48.

[0104] Such an assembly 1 is simple to implement and makes it possible to ensure, reliably and inexpensively, the filling of the containers 48.

[0105] Figures 19 to 22 illustrate another embodiment, which differs from that previously described in that the nozzle 25 comprises an upstream part 26 and a downstream part 28.

The upstream part 26 is fixed, for example by snap-fastening, on the base 19.

The upstream part 26 comprises, as before, a body 29 in which is formed a liquid circulation channel 30.

A sampling part 31 in the form of a hollow rod 31 of axis X extends from the body 29.

The channel 30 extends along an axis and is blind at a first end.

The channel 30 is closed at a second end by a stopper 30a mounted fixedly and in leaktight manner on the body 29.

The channel of the sampling part 31 opens at one end at the level of the free end of the hollow rod, and at the other end in the channel 30 of the body 29.

The body 29 comprises, as before, a flat surface 32, facing upwards, extending in the radial plane.

The downstream part 28 comprises a body 36 forming the hollow elongated dispensing part 37, with an axis parallel to the axis X. The body 36 comprises an opening 40 close to its free end.

The other end of the body 36 is fixed, for example by snap-fastening, to the upstream part 26.

As before, the opening 40 is oriented in a radial plane and along an axis forming an angle with the radial direction, that is to say with the straight line formed in the radial plane and passing through the center of the distribution part 37 and through the X axis. 11

The free end 41 of the dispensing part 37 is hemispherical, frustoconical or ogive-shaped.

The other end of the body 36 opens into the channel 30 of the upstream part 26.

In operation, the liquid passes through the channel 30 of the upstream part 26, then the channel of the distribution part 37 or of the body 36, before escaping through the opening 30.

The general operation of the embodiment of Figures 18 to 22 is similar to that previously described with reference to Figures 1 to 18.

12 [Claim 1] [Claim 2] [Claim 3] [Claim 4]

Claims (1)

CLAIMS Beverage dispensing device (18) comprising a base (19) intended to be fixedly mounted on a reservoir containing a fluid, a fluid dispensing nozzle (25) movable in translation along an axis relative to the base, the nozzle ( 25) comprising a sampling part (31) and a dispensing part (37) of the fluid, said sampling part (31) being capable of actuating the opening of a valve of said reservoir by displacement in translation of said part of sampling (31), the sampling part (31) and the distribution part (37) being fluidically connected by a fluid circulation channel opening out at the level of the sampling part (31) and of the distribution part (37) , respectively by at least a first opening and at least a second opening (40), the nozzle (25) comprising a bearing surface (32), the dispensing device (18) further comprising a lever (43) capable of pivot about an axis (46) fixed relative to the base (19), said lever (43) comprising an actuating part (45) and a support part (44) coming to bear on said surface of support (32) of the nozzle (25), so that the pivoting of the lever (43) actuates the translational movement of the nozzle (25). Beverage dispensing assembly (1) comprising a container (48) comprising an orifice equipped with a closure member (53), a beverage dispensing device (1) according to claim 1, the dispensing part (37) fluid being introduced into the internal volume (51) of the container (48) through the closure member (53) so that the second opening (40) of the dispensing part (37) of the nozzle (25 ) or located in the internal volume (51) of the container (48), the container (48) comprising a support part (49) coming to bear on the actuating part (45, 47) of the lever (43) of so as to allow the pivoting of the lever (43) by translational movement of the container (48). Assembly (1) according to Claim 2, characterized in that the container (48) comprises a bottom (49) and a side wall (50) delimiting the internal volume (51) of the container (48), the closure member (53) being formed in the bottom of the container (48), said support part (49) of the container (48) being formed by the bottom (49). Assembly (1) according to one of Claims 2 or 3, characterized in that the lever (43) has the general shape of a U comprising a base (44) from which extend two support legs (45), the pivot axis (46) of the lever (43) being formed in the base (44), the actuating part ( 45) of the lever (43) being formed by the branches (45), the support part of the lever (43) being formed by median zones, located between the pivot axis (46) and the actuating part ( 45). Assembly (1) according to one of Claims 2 to 4, characterized in that it comprises a tank (2) intended to house the tank (3) and a cover (11) closing the tank (2), the dispensing device ( 18) being mounted at the level of the lid (11) so that the sampling part (31) of the nozzle (25) extends into the internal volume (15) of the tank (2) so as to be able to cooperate with a valve of the tank (3) and that the dispensing part (37) of the nozzle (25) extends outside the tank (2) so as to be able to be introduced into the container (48) through the shutter member (53). Assembly (1) according to Claim 5, characterized in that the second opening (40) of the dispensing part (37) of the nozzle (25) has a determined angular orientation around an axis of the dispensing part (37 ), the nozzle (25) and/or the cover (11) comprising means (42, 17) for angular positioning of the nozzle (25) relative to the cover (11). Assembly (1) according to one of Claims 2 to 6, characterized in that the closure member (53) is offset with respect to the axis of the container (48), the said container (48) comprising means of angular positioning (55) of the container (48) relative to the cover (11) or relative to the nozzle (25). Assembly (1) according to one of Claims 5 to 7, characterized in that the tank (2) comprises a bottom (5) and a side wall (4) delimiting an internal volume (15) intended to accommodate the reservoir (3 ), said side wall (4) and/or bottom (5) comprising centering and positioning means (6) capable of centering and positioning the tank (3) in the internal volume (15) of the tank (2) . Assembly (1) according to Claim 8, characterized in that the tank (2) comprises cooling means (7, 8) distributed at the level of the side wall (4) or the bottom (5) of the tank (2) , housed in the internal volume (15) of the tank (2).