CN215016174U - Beverage preparation machine - Google Patents

Abstract

The utility model relates to a beverage preparation machine, it is including the kettle that is used for receiving liquid and receiving the base, receive the base including making the drive shaft around axis delta rotatory motor, the kettle is including being used for receiving the filter material basket of the batching of waiting to steep or steep, the filter material basket is rotatory around axis delta by the drive shaft drive, the kettle can be at the operating position and remove the position between remove, at the operating position, the kettle is placed on receiving the base at beverage preparation in-process, removing the position, the kettle is removed from receiving the base, be used for providing the beverage very much or clean. The machine comprises guide and retaining means which, when moved from the removal position to the work position, guide the jug on the receiving base along and about the axis Δ and, during rotation of the drive shaft, retain the jug in the work position with respect to the receiving base, the guide and retaining means being dimensioned so that the jug occupies the work position on the receiving base from a plurality of possible stable angular positions about the axis Δ.

Description

Beverage preparation machine

Technical Field

The present invention relates to the general technical field of machines for preparing beverages, in particular tea or coffee, brewed or infused by water and ingredients, and more particularly to machines for preparing infused beverages by cold water.

Background

From document US3654852 a brewing or infusion beverage preparation machine is known, comprising a jug for receiving water and a receiving base. The jug is movable between an operating position, in which it is placed on the receiving base during preparation of the beverage, and a removal position, in which it is removed from the receiving base, in particular for providing the beverage. The receiving base includes a motor with a drive shaft that is rotationally movable about a vertical axis. The jug comprises a filter basket for receiving the ingredients to be brewed or infused, the filter basket being driven in rotation about a vertical axis by a drive shaft when the jug is placed on the receiving base. The filter material basket is movable in the kettle between a brewing position, in which the filter material basket is immersed in water and coupled to the drive shaft, and a draining extraction position, in which the filter material basket is disposed above the water level. The drive shaft includes a first drive shaft disposed in the receiving base and a second drive shaft disposed in the kettle.

However, when the kettle is in the operative position on the base, the motor drives the first and second drive shafts and the kettle can be driven in rotation by these drive shafts.

Furthermore, this document does not describe how to couple the jug to the base, i.e. how to couple the first drive shaft to the second drive shaft, so that the motor drives the filter basket in rotation.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to remedy the above-mentioned drawbacks and to provide a machine for the preparation of infusion or infusion beverages which is safe and reliable in operation, capable of achieving an optimized result and improved ergonomics.

It is another object of the present invention to provide a brewed beverage preparation machine that is simple in design and economical to implement.

These objects are achieved by a brewing or infusion beverage preparation machine comprising a jug for receiving liquid and a receiving base, the receiving base comprising a motor for rotating a drive shaft about an axis delta, the jug comprising a filter material basket for receiving ingredients to be brewed or infused, the filter material basket being rotated about the axis delta by the drive shaft, the jug being movable between an operating position, in which the jug is placed on the receiving base during beverage preparation, and a removal position, in which the jug is removed from the receiving base, in particular for providing a beverage or for cleaning, the drive shaft comprising a first drive shaft arranged in the receiving base and a second drive shaft arranged in the jug, characterized in that the beverage preparation machine comprises guide and retaining means which, when moved from the removal position to the operating position, the guiding and retaining means guide the jug on the receiving base along and about the axis Δ and, during rotation of the drive shaft, retain the jug in an operative position with respect to the receiving base, the guiding and retaining means being dimensioned so that the jug occupies an operative position on the receiving base from a plurality of possible stable angular positions about the axis Δ.

When moving from the removal position to the working position, the guiding and retaining means guide the jug on the receiving base in translation along the axis Δ and in rotation about the axis Δ.

The user therefore places the jug on the receiving base by means of a translational movement along the axis Δ, without any particular precautions, the guiding and retaining means guiding the jug in translation and in rotation with respect to the axis Δ towards the working position in a plurality of possible stable angular positions. The guiding and retaining means, combined with gravity, keep the jug in the working position with respect to the receiving base during the rotation of the motor and the drive shaft.

Advantageously, the axis Δ is substantially vertical, preferably vertical.

By substantially vertical is meant that the axis delta forms an angle with the vertical axis of more than 45 deg..

Advantageously, the guiding and retaining means are dimensioned so that the jug occupies the working position in at least four possible stable angular positions regularly distributed about the axis Δ, preferably in at least eight possible stable angular positions about the axis Δ.

Regularly distributed around the axis Δ means that the angular spacing between two successive stable angular positions corresponds to a rotation of 360 ° divided by the number of possible stable angular positions.

Thus, the more stable angular positions the kettle can occupy, the smaller the angular spacing between two successive stable angular positions. In the case of a jug capable of assuming an operative position in eight stable angular positions, the angular spacing between two consecutive stable angular positions is an angle of 45 °.

Preferably, the guiding and retaining means comprise a plurality of projecting elements extending radially with respect to the axis Δ and cooperating with a plurality of V-shaped grooves arranged in succession, each projecting element entering the opening of a V-shaped groove to be guided by the two walls of the V-shaped groove to the bottom of the V-shaped groove when moving from the removal position to the work position, and the plurality of projecting elements being arranged on the jug, the plurality of V-shaped grooves being arranged on the receiving seat, or vice versa.

It will be understood that the V-shaped grooves extend vertically along the axis Δ, with the opening upwards and the bottom downwards in the case of a plurality of V-shaped grooves arranged on the receiving base, or downwards and the bottom upwards in the case of a plurality of V-shaped grooves arranged on the jug.

It will be appreciated that the V-shaped grooves are regularly distributed about the axis Δ.

Advantageously, each V-shaped groove has a plane of symmetry comprising the axis Δ.

Thus, each protruding element is guided by the walls of the V-shaped groove into the bottom of the V-shaped groove. In this working position, the protruding element is locked against rotation about the axis Δ at the bottom of the V-shaped groove. Thus, the jug is also locked against rotation on the receiving base about the axis Δ.

Advantageously, the number of possible stable angular positions of the jug on the base about the axis Δ corresponds to the number of projecting elements and/or the number of V-shaped grooves.

Advantageously, the guiding and retaining means comprise a central channel along the axis Δ starting from the receiving base and a tubular projection along the axis Δ starting from the jug and cooperating with the central channel when moving from the removal position to the working position, the plurality of projecting elements being arranged inside the tubular projection and the plurality of V-shaped grooves being arranged on the central channel.

The receiving base has an upper wall provided with an upwardly extending central channel, the jug having a bottom from which a tubular projection along the axis Δ also extends upwardly.

Thus, the tubular projection, once engaged on the central channel, guides the translation of the jug on the base along the axis Δ. During translation, the projecting element cooperates with the V-shaped groove by rotating the jug about the axis Δ into the working position.

In the case where the jug can occupy the working position from eight stable angular positions, the jug can be rotated around the axis Δ by a maximum angle of 45 ° divided by 2, i.e. 22.5 ° clockwise or 22.5 ° counterclockwise from the removal position to the working position.

Preferably, the central channel has a free end on which a plurality of V-shaped grooves are arranged.

It will be appreciated that the V-shaped grooves are regularly distributed about the axis Δ on the free end of the channel and that the projecting elements are regularly distributed about the axis Δ inside the tubular projection.

Advantageously, the first drive shaft is accommodated in the central channel and the second drive shaft is arranged in the tubular projection.

Thus, once the tubular projection is engaged on the central channel, the first and second drive shafts are aligned and engaged when the jug is in the operative position on the receiving base.

Preferably, the first drive shaft includes teeth that mate with teeth on the second drive shaft to transmit rotation of the motor to the filter media basket.

Therefore, when the kettle is in the working position on the receiving base, the positive driving of the first driving shaft to the second driving shaft can be realized.

Advantageously, the filter material basket is movable in the kettle between a brewing position, in which it is immersed in the liquid and coupled to the drive shaft, and a draining extraction position, in which it is arranged above the liquid level.

Preferably, the filter material basket has a bottom from which extends a tubular conduit along axis Δ, the tubular conduit comprising a closed free end cooperating with the drive shaft.

Advantageously, the second drive shaft arranged in the kettle has a projection which cooperates with a complementary shaped recess provided in the closed free end of the tubular duct to drive the filter material basket in rotation.

Thus, a positive drive of the filter basket is achieved by the second drive shaft arranged in the kettle.

Preferably, the kettle has an upper opening and a lid, the lid being movable between a closed position in which the lid covers the upper opening and an open position in which the lid is remote from the upper opening, the filter material basket being connected to the lid by coupling means such that when the lid is in the closed position the filter material basket is in the brew position and when the lid is in the open position the filter material basket is in the drain position, the open position of the lid being a stable position.

Drawings

The objects, aspects and advantages of the invention will be best understood from the following description of a specific embodiment of the invention, presented as a non-limiting example, with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of a brewed or infusion beverage preparation machine according to a particular embodiment of the present invention, wherein a kettle is placed on a receiving base, a filter basket is in a brewing position,

figure 2 is a sectional view of the beverage preparation machine shown in figure 1 along a cutting plane II,

fig. 3 is a perspective view of the beverage preparation machine shown in fig. 1, with the lid in an open position,

figure 4 is a sectional view of the beverage preparation machine shown in figure 3 along a cutting plane IV,

figure 5 is a bottom perspective view of the filter basket of the beverage preparation machine shown in figure 1,

figure 6 is a perspective view of the beverage preparation machine shown in figure 1, with the kettle in a removed position, separated from the receiving base, the kettle being shown in bottom perspective view, the receiving base being shown in top perspective view,

fig. 7 is a top perspective view of the jug of the beverage preparation machine shown in fig. 1, the jug comprising a subassembly formed by a filter and a plurality of cavities,

fig. 8 is a top perspective view of a subassembly formed by the filter and the plurality of cavities of the pitcher shown in fig. 7.

Detailed Description

It is noted that in this document the terms "horizontal", "vertical", "lower", "upper", "longitudinal", "lateral", "top", "bottom" used to describe the beverage preparation machine refer to the beverage preparation machine in the situation of use when placed on a horizontal plane.

As shown in fig. 1 to 6, the beverage preparation machine 1 comprises a receiving base 2, a jug 20 provided with a lid 60 and a filter basket 40. The filter basket 40 is designed to contain ingredients to be brewed in hot water or ingredients to be infused in cold water, such as coffee, previously placed in the jug 20. The filter basket 40 is rotatably arranged in the kettle 20 and is rotated by the drive shafts 3a, 3b (fig. 2 and 4).

When preparing a beverage, the jug 20 is placed on the receiving base 2 and, for example, the jug 20 is removed from the receiving base 2, if a beverage is to be served or if cleaning is to be carried out. The receiving base 2 comprises a motor 4 for rotating the drive shafts 3a, 3b, which drive shafts 3a, 3b are movable about a vertical axis Δ. Thus, the drive shaft comprises a first drive shaft 3a arranged in the receiving base 2 and a second drive shaft 3b arranged in the kettle 20.

The receiving seat 2 comprises an upper wall 5 (fig. 6), the upper wall 5 being provided with a central channel 6, the first drive shaft 3a being housed in the central channel 6, the first drive shaft 3a terminating in a drive element 7 provided with teeth 8. The first drive shaft 3a arranged in the receiving base 2 is intended to drive the second drive shaft 3b arranged in the jug 20 and the filter basket 40 in rotation about the axis Δ. The filter basket 40 is also movable in the jug 20 between a brewing position, in which the filter basket 40 is immersed in the water and coupled to the drive shafts 3a, 3b, and a draining extraction position, in which the filter basket 40 is arranged above the water level.

The jug 20 has a bottom 21 and a substantially cylindrical side wall 22, the free end of the side wall 22 defining an upper opening 23 (figures 3 and 4). The kettle 20 comprises a handle 24 and a pouring spout 25 arranged diametrically opposite the handle 24. The jug 20 is configured to receive a filter basket 40, the filter basket 40 being rotatably disposed in the jug 20 during beverage preparation.

The jug 20 comprises a tubular projection 26 extending upwards from the bottom 21 along the axis Δ. The tubular projection 26 has a lower portion 27 with a diameter D1, followed by an upper portion 28 with a diameter D2, D1 being greater than D2. The lower portion 27 forms a recess for cooperation with the channel 6 of the receiving base 2. The second drive shaft 3b arranged in the kettle 20 is located in the upper part 28. The upper part 28 has an open free end 29, which free end 29 is covered by an upper end 30 of a second drive shaft 3b arranged in the kettle 20. The second drive shaft 3b arranged in the jug 20 has a lower end 31 forming a cavity 32, the cavity 32 being intended to cooperate with the drive element 7 of the first drive shaft 3a arranged in the receiving base 2 when the jug 20 is placed on the receiving base 2. The cavity 32 has teeth 33 cooperating with the teeth 8 of the drive element 7 to transmit the rotation of the motor 4 to the second drive shaft 3b arranged in the kettle 20. A seal 34 is arranged between the second drive shaft 3b and the upper part 28 in the kettle 20.

As shown in fig. 6, the channel 6 has a free end 9, which free end 9 comprises a series of eight V-shaped grooves 10 a. V-shaped grooves 10a,. 10h are arranged continuously, regularly and contiguously on the annular periphery of the free end 9 of the channel 6, so as to form a saw-tooth profile. The free end 9 has a wall and a V-shaped groove 10a, 10h is arranged in the thickness of the wall. Each V-shaped groove 10a,. 10h is identical and has an upper opening 13 from which two walls 11, 12 extend downwards. The two walls 11, 12 meet at a low point forming the bottom 14 of the recess. Each V-shaped groove 10a,. 10h extends vertically along axis Δ, with opening 13 facing upwards and bottom 14 facing downwards. Two adjacent grooves are connected together by one of their walls 11, 12 to form a peak-shaped high point.

According to fig. 6, the tubular projection 26 has projecting elements 16 a.. 16h, which extend radially with respect to the wall 17 of the tubular projection 26. Each projecting element 16a,.. 16h has a tip intended to pass through the opening 13 of the V-shaped groove and then be guided by the walls 11, 12 to be housed in an adjusted manner in the bottom 14 of the V-shaped groove to maintain the jug 20 in the working position on the base 2.

The V-shaped grooves 10a,. 10h and the projecting elements 16a,. 16h are regularly distributed around the axis Δ at the same angular spacing equal to 45 °.

The central channel 6 provided with the V-shaped grooves 10 a.. 10h and the tubular projection 26 provided with the projecting elements 16 a.. 16h form guide and retaining means for guiding and retaining the jug 20 on the receiving base 2 in translation along the axis Δ and in rotation about the axis Δ when moving from the removal position to the working position.

The filter basket 40 has a bottom 41 and a side wall 42 provided with an opening 43. A fine mesh screen (not shown) covers the opening 43. The sidewall 42 is generally cylindrical with a free end defining an upper opening 44. The filter basket 40 has a lid 45, the lid 45 being designed to be screwed onto the free end of the side wall 42 to close the upper opening 44. The lid 45 has perforations 46 to allow air trapped under the lid 45 to escape.

The filter basket 40 has a tubular conduit 47 along the axis Δ, the tubular conduit 47 extending from the base 41 and having a closed free end 48. Tubular conduit 47 has a tapered portion 49 and a generally cylindrical portion 50. The closed free end 48 is intended to cooperate with the upper end 30 of the second drive shaft 3b disposed in filter media basket 20. The substantially cylindrical portion 50 cooperates with the upper portion 28 of the tubular projection 26 of the jug 20 to guide the filter basket 40 in rotation about the axis Δ. The upper end 30 of the second drive shaft 3b arranged in the jug 20 has a projection 35, the projection 35 cooperating with a complementary shaped recess 51 (figure 4) arranged in the closed free end 48 of the tubular duct 47 to drive the filter basket 40 in rotation. The closed free end 48 of the filter basket 40 rests on the upper end 30 of the second drive shaft 3b provided in the jug 20. The closed free end 48 and the upper end 30 form a lower stop that prevents the filter basket 40 from moving downward along the axis Δ.

The lid 45 of the filter basket 40 has an upper wall 52 and a cylindrical stem 53. A cylindrical rod 53 extends from the upper wall 52 along axis Δ and terminates in a spherical portion 54.

The lid 60 of the jug 20 is rotatably movable about an axis θ perpendicular to the axis Δ between a closed position (fig. 1 and 2), in which the lid 60 covers the upper opening 23, and an open position (fig. 3 and 4), in which the lid 60 is distanced from the upper opening 23 of the jug 20. The lid 60 has an unstable intermediate position between the two stable positions, the closed position and the open position. The jug 20 has means for returning the lid 60 to the closed position or to the open position (figures 2 and 4). The return means comprise a cylindrical rod 61, one end 62 of which is hinged in rotation about an axis β parallel to the axis θ and offset from the axis θ towards the centre and the top of the jug 20. The cylindrical rod 61 has a free end 63, which free end 63 is slidably arranged in a through hole 65 arranged in a wall 64 of the cover 60. The return means also has a compression spring 66 disposed around the cylindrical rod 61. A first end of the spring 66 is supported on a stop 67 arranged on the cylindrical rod 61 and close to the axis β. A second end of the spring 66 is supported on the wall 64. The spring 66 tends to return the lid 60 from an unstable neutral position to the nearest stable position due to the offset of the axis β from the axis θ towards the centre and top of the kettle 20.

The lid 60 has a lower wall 68, the lower wall 68 being adapted to engage the bulbous portion 54 when the lid is in the closed position (fig. 2). The bulbous portion 54 and the lower wall 68 of the lid 60 form a spherical/planar point contact when the filter basket 40 is in the brew position and the lid 60 is in the closed position. The spherical portion 54 and the lower wall 68 thus form an upper stop that prevents the filter basket 40 from moving upward along the axis Δ.

The filter basket 40 moves along the axis delta and the gap is reduced by a few millimeters, particularly less than one millimeter, between the lower and upper positions. Regardless of the position along the axis Δ, the filter basket 40 is driven in rotation by the drive shafts 3a, 3 b. In the brew position, the filter media basket 40 is held between a low position in which the closed free end 48 of the filter media basket 40 contacts the upper end 30 of the second drive shaft 3b disposed in the kettle 20 and a high position in which the bulbous portion 54 contacts the lower wall 68.

The filter basket 40 extends along an axis Δ over a height H. The complementary form of the projection 26 of the tubular conduit 47 extends from the bottom 21 of the filter media basket 20 over more than half of the height H of the filter media basket 40.

The cylindrical stem 53 and the spherical portion 54 of the filter basket 40 form a T-bar type slide member 55 and the lid 60 has a T-shaped channel 69 disposed in the lower wall 68. The T-bar type slide member 55 and the T-shaped channel 69 form a coupling means for coupling the filter basket 40 to the lid 60 that allows the filter basket 40 to move from the brew position when the lid 60 is in the closed position to the drain position when the lid 60 is in the open position.

The groove 69 has a vertical plane of symmetry passing through the axis Δ and perpendicular to the axis θ. The channel 69 has a closed end 70 and an open end 71, and the slide member 55 is in contact with the closed end 70 and the slide member 55 can pass through the open end 71 when the filter basket 40 is in the drain position. Thus, the filter basket 40 can be moved relative to the lid 60 between a draining position in which the slide member 55 is in contact with the closed end 70 and a removal position in which the slide member 55 is pulled out of the channel 69 through the open end 71. The channel 69 has walls 72, 73, each wall 72, 73 being provided with a rounded end 74, 75, the rounded ends 74, 75 cooperating with the spherical portion 54 to act on the filter basket 40, in particular to bring it into the draining position, when the lid 60 is operated.

According to fig. 7 and 8, the jug 20 has a sub-assembly 80 formed by a filter 81 and a plurality of cavities 82a, 82b, 82c, 82 d. A plurality of cavities 82a, 82b, 82c, 82d are disposed in the lower curved portion 83 of the subassembly 80. The lower curved portion 83 extends upwardly from the bottom 21 and is substantially parallel to the side wall 22. The filter 81 is disposed in the upper curved portion 84 of the subassembly 80. The upper curved portion 84 extends upwardly from the lower curved portion 83 in front of the pouring spout 25 to a free end 85 aligned with the upper opening 23 of the jug 20. The subassembly 80 is removably disposed in the kettle 20. The jug 20 has ribs 36 and the subassembly 80 has a peripheral frame 86. The perimeter frame 86 is designed to cooperate with the ribs 36 to retain the subassembly 80 in the jug 20. The free end 85 has an integrally formed protrusion 87 that forms a gripping area of the subassembly 80.

Pouring spout 25 and subassembly 80 have the same plane of symmetry P1 through handle 24. The filter 81 has two screens 88, 89, each of which has a mesh defining a passage aperture (not shown) of between 30 and 50 microns. Two screens 88, 89 are arranged on both sides of the symmetry plane P1. The perimeter frame 86 and ribs 36 extend in a plane P2 that is substantially perpendicular to the plane of symmetry P1. The sub-assembly 80 has a shape projected onto a trapezoidal plane P2.

The lower curved portion 83 has a bottom wall 90 parallel to the side wall 22 of the jug 20 from which extend parallel to the bottom 21 continuous curved walls 91a, 91b, 91c, 91d, 91e defining a plurality of cavities 82a, 82b, 82c, 82 d. Thus, each cavity 82a, 82b, 82c, 82d has a circular arc opening directed towards the interior of the kettle 20. In a cross section parallel to the bottom 21, the side wall 22 of the jug 20 has a periphery P, and the lower curved portion 83 extends over at least 10% of the periphery P.

During operation, the user grasps the handle 24 of the jug 20 in the position removed from the receiving base 2, in order to place it in the working position on the receiving base 2. The user positions the tubular projection 26 on the central channel 6 and accompanies the movement of the jug 20 in translation downwards along the axis Δ. The eight projecting elements 16a,. 16h will pass through the openings 13 of the eight V-shaped grooves 10a, …,10h and then each come into contact with one of the walls 11, 12. The jug 20 will then rotate about the axis Δ while translating downwards until the eight projecting elements 16a,. 16h reach the bottom 14 of the eight V-shaped grooves 10a, …,10h, the jug then assuming the working position in eight possible stable angular positions. In the working position, the bottom 21 of the jug 20 rests on the upper wall 5 of the receiving base 2.

The user then moves the lid 60 to the open position to bring the strainer basket 40 to the draining position. He grasps the filter basket 40 and moves it upwardly. The slide member 55 formed by the cylindrical rod 53 and the spherical portion 54 moves out of the groove 69 so that the filter basket 40 is disengaged from the lid 60 in the removed position. The user then places water into the kettle 20 and loads the ingredients (e.g., coffee) to be brewed or infused into the filter media basket 40. The user then positions the filter basket 40 on the lid 60 by sliding the slide member 55 into the channel 69 to bring it into the draining position. He then tilts the lid 60 to the closed position to place the filter basket 40 in the brewing position in the jug. The user then starts a beverage preparation cycle. The motor 4 is activated and the first drive shaft 3a arranged in the receiving base 2 drives in rotation the second drive shaft 3b arranged in the jug 20 and the filter basket 40. Since the ingredients to be brewed or infused have not yet been submerged in water, the filter basket 40 floats in the water and the bulbous portion 54 contacts the lower wall 68 to form an upper stop that prevents upward movement of the filter basket 40 along the axis Δ. When the ingredients to be brewed or infused are sufficiently submerged by the water, the filter basket 40 moves along the axis Δ toward the bottom 21 of the kettle 20. The closed free end 48 of the filter basket 40 rests on the upper end 30 of the drive shaft 3b provided in the jug 20. The closed free end 48 and the upper end 30 form a lower stop that prevents the filter basket 40 from moving downward along the axis Δ.

After beverage preparation is complete, the user moves the lid 60 to the open position to bring the filter basket 40 to the draining position. After a few minutes, the water contained in the filter media basket 40 has drained and the user can remove the filter media basket 40 and close the lid 60. The user can then grasp the handle 24 of the jug 20 to provide the beverage. The beverage passes through the sieves 88, 89 of the filter 81 to the pouring spout 25 to retain the fine particles of the ingredient, and at the end of pouring, the heavy particles that settle on the bottom 21 are conveyed to the plurality of cavities 82a, 82b, 82c, 82d and then fall under the influence of gravity into these cavities 82a, 82b, 82c, 82 d. Heavy particles not captured in the cavities 82a, 82b, 82c, 82d are retained by the screens 88, 89 of the filter 81.

Of course, the invention is not limited to the embodiments described and shown, which are provided as examples only. Modifications are possible, particularly in respect of the construction of the various elements or by substitution of equivalent techniques, without departing from the scope of protection of the invention.

In one embodiment variant, the guiding and retaining device has only one projecting element and a plurality of V-shaped grooves.

In another embodiment variant, the plurality of V-shaped grooves has an inclined wall and a vertical wall.

Claims (12)

1. A beverage preparation machine for brewing or infusing a beverage, comprising a jug (20) for receiving liquid and a receiving base (2), the receiving base (2) comprising a motor (4) for rotating a drive shaft about an axis Delta, the jug (20) comprising a filter basket (40) for receiving ingredients to be brewed or infused, the filter basket being rotated about the axis Delta by the drive shaft, the jug (20) being movable between an operating position in which it is placed on the receiving base (2) during beverage preparation and a removal position in which it is removed from the receiving base (2), the drive shaft comprising a first drive shaft (3a) arranged in the receiving base (2) and a second drive shaft (3b) arranged in the jug (20), characterized in that it comprises guide and retaining means (6, 10a, …,10h, 26, 16a, …, 16h) which, when moving from said removal position to said work position, guide said jug (20) on said receiving base (2) along and about said axis Δ and which, during rotation of said drive shaft, retain said jug (20) in said work position with respect to said receiving base (2), said guide and retaining means (6, 10a, …,10h, 26, 16a, …, 16h) being dimensioned so that said jug (20) occupies a work position on said receiving base (2) from a plurality of possible stable angular positions about said axis Δ.

2. The machine according to claim 1, wherein the guide and retaining means (6, 10a, …,10h, 26, 16a, …, 16h) are dimensioned so that the jug (20) occupies the working position in at least four possible stable angular positions about the axis Δ.

3. The machine according to claim 1, wherein the guide and retaining means (6, 10a, …,10h, 26, 16a, …, 16h) are dimensioned so that the jug (20) occupies the working position in at least eight possible stable angular positions about the axis Δ.

4. The machine according to any of claims 1 to 3, wherein the guiding and retaining means comprise a plurality of projecting elements (16a, …, 16h) which extend radially with respect to the axis Δ and cooperate with a plurality of V-shaped grooves (10a, …,10 h) arranged in succession, each projecting element (16a, …, 16h) entering an opening (13) of a V-shaped groove (10a, …,10 h) when moving from the removal position to the work position, to be guided by two walls (11, 12) of the V-shaped groove (10a, …,10 h) to the bottom of the V-shaped groove (10a, …,10 h), and the plurality of projecting elements (16a, …, 16h) being arranged on the jug (20), and the plurality of V-shaped grooves (10a, …,10 h) being arranged on the receiving base (2), and vice versa.

5. The machine according to claim 4, wherein the guiding and retaining means comprise a central channel (6) along an axis Δ starting from the receiving base (2) and a tubular projection (26) along an axis Δ starting from the jug (20), and when moving from the removal position to the working position, the tubular projection (26) cooperates with the central channel (6), the plurality of projecting elements (16a, …, 16h) being arranged inside the tubular projection (26), and the plurality of V-shaped grooves (10a, …,10 h) being arranged on the central channel (6).

6. The beverage preparation machine according to claim 5, wherein the central channel (6) has a free end on which the plurality of V-shaped grooves are arranged.

7. The machine according to claim 5, wherein the first drive shaft (3a) is housed in the central channel (6) and the second drive shaft (3b) is arranged in the tubular projection (26).

8. The machine according to any of claims 1 to 3, wherein the first drive shaft (3a) has teeth cooperating with the teeth of the second drive shaft (3b) to transmit the rotation of the motor (4) to the filter basket (40).

9. The machine according to any of claims 1 to 3, wherein the filter basket (40) has a bottom from which extends a tubular duct (47) along the axis Δ, the tubular duct comprising a closed free end (48) cooperating with the drive shaft.

10. The machine according to any of claims 1 to 3, wherein the filter basket (40) is movable in the jug (20) between a brewing position, in which the filter basket (40) is immersed in the liquid and coupled to the drive shaft, and a draining extraction position, in which the filter basket (40) is arranged above the liquid level.

11. The machine according to claim 10, wherein the jug (20) has an upper opening (23) and a lid (60) movable between a closed position, in which the lid (60) covers the upper opening (23), and an open position, in which the lid (60) is remote from the upper opening (23), and the filter basket (40) is connected to the lid (60) by coupling means (55, 69), so that the filter basket (40) is in the brewing position when the lid (60) is in the closed position, and the filter basket (40) is in the draining position when the lid (60) is in the open position, the open position of the lid (60) being a stable position.

12. The machine according to claim 1, wherein in the removal position the jug is removed from the receiving base (2) for serving a beverage or cleaning.

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