BREWING GROUP WITH KNEE LEVER

Description

TECHNICAL FIELD OF THE INVENTION

[0001] The invention relates to the field of infusion groups. Its application is particularly advantageous in the field of machines for preparing beverages by infusion, using packaging such as a capsule or a pod. STATE OF THE ART

[0002] There are several types of brewing units for beverage preparation machines. Some brewing units are specifically designed for preparing beverages from packaging, such as capsules or pods. These units generally consist of a brewing chamber, formed by two chamber sections designed to close around or over the packaging during brewing.

[0003] To achieve this, brewing units also include conditioning receiving elements and an actuator designed to move the two chamber sections closer together or further apart. During brewing, the actuator can be configured to hermetically seal the two sections forming the brewing chamber. The airtightness of these units is crucial because, during brewing, the chamber interior can be subjected to significant pressure from a heated fluid, such as pressurized hot water. A leak can lead to leaks or even damage the brewing unit.

[0004] It is well known in the state of the art for brewing units in which the actuator is a cylinder, pushing at least one of the two chamber sections against the other to form the brewing chamber. Using a cylinder allows for a tight and controlled closure of the brewing chamber, as well as good pressure resistance. However, this complicates the brewing unit because the cylinder is connected to a dedicated hydraulic circuit for its operation. Furthermore, this hydraulic circuit requires regular maintenance, particularly to prevent scale buildup in the cylinder, which can block its operation. Brewing units incorporating a cylinder therefore have higher manufacturing and maintenance costs.

[0005] Furthermore, it is known from the prior art that infusion units in which the actuator includes a toggle mechanism are designed to transform a rotational movement, for example of a lever, into a translational movement, thereby bringing the two chamber sections together to form the infusion chamber. However, maintaining the airtightness of this type of mechanism proves difficult, especially after repeated use of the infusion unit. Moreover, when this type of mechanism is not supplemented by a cylinder, the forces required on the actuator to achieve airtightness can vary considerably, particularly when the component dimensions are not precisely controlled. The user may also find the unit difficult to operate.

[0006] US patent 2014 / 0298999 A1 describes a coffee machine whose brew group includes a toggle mechanism. In this group, a seal with a lip is provided on the fixed part of the chamber to ensure a good seal during brewing. The lip is configured to come into contact with the capsule. However, the airtight seal of such a brewing chamber could still be improved.

[0007] One object of the present invention is therefore to provide an infusion group comprising a toggle mechanism, allowing for a tight seal of the infusion chamber. Advantageously, the infusion group according to the invention aims to achieve a tight seal of the infusion chamber that is accessible to any user of the group, to ensure good durability, and to limit the manufacturing and maintenance costs of the group.

[0008] The other objects, features, and advantages of the present invention will become apparent from an examination of the following description and accompanying drawings. It is understood that other advantages may be incorporated. SUMMARY OF THE INVENTION

[0009] To achieve this objective, according to one embodiment, the present invention provides an infusion unit for a beverage infusion machine using a product contained in packaging according to claim 1, the unit comprising: a support frame for the group; an infusion chamber configured to receive the conditioning during infusion, said chamber being defined by at least a first portion and a second portion of chamber, the second portion of chamber being movable relative to the frame according to a principal translational movement of the second portion, so as to move away from or towards the first portion in order to bring the infusion chamber into an respectively open or closed configuration, an actuator arranged to control at least part of the movement of the second portion, the actuator comprising a toggle mechanism, the second portion being carried at least in part by the actuator.

[0010] The group also includes an adjustment device, located on the frame, and configured to adjust the distance between the first and second chamber portions when the brewing chamber is in the closed configuration.

[0011] The adjustment mechanism is configured to set the distance between the first and second chamber sections when the brewing chamber is in the closed position, ensuring a tight seal during brewing. This adjustment allows the brewing chamber to be closed while minimizing the force required from the user on the actuator. The closing force is therefore low enough for any user to operate manually. Furthermore, the brewing unit has a compact footprint.

[0012] According to an example, in a closed configuration, the distance between the first and second chamber portions is adjusted so as to bring the first and second chamber portions into contact, either directly or through conditioning.

[0013] During the development of the invention, it became apparent that the difficulties in ensuring the airtightness of a brewing unit incorporating a toggle mechanism stem from the challenge of controlling manufacturing tolerances across all the components of the toggle mechanism. These manufacturing tolerances can significantly impact the toggle mechanism's stroke length. Consequently, when the brewing chamber is closed, its airtightness is not guaranteed. Adjusting the distance between the first and second chamber sections, when the brewing chamber is closed, compensates for variations in the toggle mechanism's stroke length, thereby ensuring the chamber remains airtight during brewing.

[0014] Furthermore, the brewing unit according to the invention provides that the adjustment device is mounted on the frame. This gives the adjustment device a fixed reference point. Adjusting the distance between the two chamber sections is therefore more precise. Indeed, if the adjustment device had been mounted on parts that moved relative to the frame, there would have been no fixed reference point, and the adjustment accuracy would have been reduced. The invention thus improves the precision of the brewing unit's closure. It therefore solves the problem of improving the reliability and safety of the unit. Moreover, the fact that the adjustment device is mounted on the frame makes the latter more easily accessible and manipulable by a user during the brewing unit's manufacture or maintenance.Indeed, if the adjustment mechanism had been supported by parts that moved relative to the frame, adjusting the mechanism would have been more complex for the user. Furthermore, the relative movement of the various parts supporting the adjustment mechanism would likely have led to an unintentional misalignment of the setting. This would have compromised the reliability of the brewing group closure. The proposed invention thus enhances the safety and reliability of existing brewing groups with a toggle mechanism. In one example, the group further includes a sealing compensation system. This sealing compensation system may include at least one elastic element configured to exert a compressive force on at least one of the first and second chamber portions, tending to mutually tighten the first and second portions into the closed configuration of the brewing chamber.The compensation system is designed to maintain the brewing chamber's airtightness despite potential wear on the group's components. This system limits the impact of such wear, thus guaranteeing the group's airtightness throughout its lifespan. This further extends the brewing group's service life.

[0015] According to one example, at least one elastic organ is configured to be compressed elastically only in the closed configuration of the infusion chamber.

[0016] In one example, at least one elastic element is configured not to be elastically compressed in the open configuration of the infusion chamber and is configured to be elastically compressed in the closed configuration of the infusion chamber. This at least one elastic element comprises at least one of a compression spring and at least one compression washer. In one example, this at least one elastic element, preferably a plurality of compression washers, is positioned between the frame and the first portion of the chamber.

[0017] According to one example, at least one elastic element is configured to be elastically compressed in the open configuration of the infusion chamber and in the closed configuration of the infusion chamber, at least one elastic element comprising at least one of a compression spring and at least one compression washer.

[0018] A second aspect of the present invention relates to a method for adjusting an infusion group according to the first aspect of the invention, comprising at least the following steps: Operate the toggle mechanism to move the infusion chamber into the closed configuration; operate the adjustment device to adjust the distance between the first and second chamber sections when the infusion chamber is in the closed configuration.

[0019] The distance between the first and second chamber sections, when the brewing chamber is in the closed configuration, can be adjusted, for example, during the brewing unit's manufacturing or when replacing a unit component, particularly when replacing a component involved in the unit's toggle-joint closure mechanism. The distance between the first and second chamber sections can thus be adjusted for each toggle-joint mechanism stroke length, for a variety of brewing units. Furthermore, this adjustment procedure can be implemented during unit maintenance. Typically, after a certain number of cycles or a certain period of unit use, the unit can be adjusted to compensate for component wear. Indeed, it has unexpectedly been found that even slight component wear can have a significant impact on the unit's closure.Typically, a group that has a sealed chamber at the beginning of its life can become non-sealed after a large number of cycles, due to wear and tear on the parts.

[0020] According to a third aspect, the invention relates to a method for manufacturing an infusion group, comprising at least: to provide an infusion group according to the first aspect of the invention, and to implement a method for adjusting the infusion group according to the second aspect of the invention.

[0021] This adjustment method thus makes it possible to limit, or even eliminate, manufacturing tolerances of the toggle mechanism. Consequently, the production costs of the infusion unit according to the first aspect of the invention are advantageously minimized.

[0022] According to a fourth aspect, the invention relates to a beverage preparation machine by infusion, from a product contained in a package, comprising an infusion group according to the first aspect of the invention, as well as at least one boiler and one pump, the boiler and the pump being configured to supply the infusion chamber with a heated and pressurized fluid.

[0023] According to a fifth aspect, the invention relates to an assembly comprising a beverage preparation machine according to the third aspect of the invention and at least one packaging unit. The beverage preparation machine by infusion, as well as the assembly, including the infusion unit according to the first aspect of the invention, incorporate the features and advantages of the infusion unit according to the first aspect of the invention. BRIEF DESCRIPTION OF THE FIGURES

[0024] The aims, objects, features and advantages of the invention will become clearer from the detailed description of an embodiment thereof, which is illustrated by the following accompanying drawings in which: There figure 1 represents an overall perspective view of the infusion group according to one embodiment of the invention. figure 2 represents a side view of the infusion group illustrated in figure 1 , when the infusion chamber is in the open configuration. The figure 3 represents a side view of the infusion group illustrated in figure 1 , when the infusion chamber is in a closed configuration. The figure 4A represents a side view of the infusion group illustrated in figure 1 , when the infusion chamber is in the open configuration. In this view, one of the plates is not shown for ease of understanding. The figure 4Brepresents a cross-sectional side view of the infusion group illustrated in figure 1 , when the infusion chamber is in the open configuration. The figure 5A represents a side view of the infusion group illustrated in figure 1 , when the infusion chamber is in the closed configuration. In this view, one of the stages is not shown for ease of understanding. The figure 5B represents a cross-sectional side view of the infusion group illustrated in figure 1 , when the infusion chamber is in a closed configuration. The figure 6 represents a view of the adjustment device according to one embodiment of the invention. figure 7 represents a view of the cooperation between the adjustment device and the frame, according to one embodiment of the invention. figure 8 represents a side-sectional view of the first and second portions of the infusion chamber, in an open configuration, according to one embodiment of the invention. figure 9represents an enlarged view of the figure 8 . There Figure 10 represents a cross-sectional side view of a portion of the first and second sections of the infusion chamber, in a closed configuration, according to one embodiment of the invention. figure 11 represents a cross-sectional side view of the first and second portions of the infusion chamber, in a closed configuration, according to one embodiment of the invention. figure 12 represents a cross-sectional perspective view of the first and second portions of the infusion chamber illustrated in figure 11 .

[0025] The drawings are given as examples and are not limiting to the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention and are not necessarily to scale with practical applications. DETAILED DESCRIPTION OF THE INVENTION

[0026] Before beginning a detailed review of embodiments of the invention, optional features of the infusion group according to the first aspect of the invention are stated below, which may possibly be used in association or alternatively.

[0027] In one example, the toggle mechanism and the second portion are connected so that the toggle mechanism's actuator causes the second portion to move relative to the frame. In another example, the adjustment device is configured to adjust the distance between the first and second chamber portions without involving any elastic component, and more specifically, without adding any elastic component beyond the sealing compensation system. In another example, the adjustment device is free of any elastic element, such as a seal. In yet another example, the adjustment device is not a seal.

[0028] The adjustment device is configured to move at least one of the first and second chamber sections relative to the frame. The second section is moved either directly by the adjustment device or via a movement of the toggle mechanism. Thus, the distance between the first and second chamber sections can be adjusted when the brewing chamber is in the closed configuration. More specifically, moving the toggle mechanism relative to the frame allows adjustment of the position of the second movable chamber section to set the distance between the first and second chamber sections in the closed configuration of the brewing chamber. Alternatively, adjusting the position of the first chamber section allows adjustment of the distance between the first and second chamber sections in the closed configuration of the brewing chamber.

[0029] As an example, the adjustment device may include at least one adjusting screw rotatably mounted on the frame and configured to move at least one of the first and second chamber portions when the screw is rotated. Thus, the adjustment of the distance between the first and second chamber portions is performed mechanically, resulting in a more stable setting and thereby improving the reliability and safety of the unit. Furthermore, the closing force to be applied to the actuator, such as a lever, can be set to a predetermined force so that any user can manually operate the cylinder. As another example, the adjusting screw may be rotatably mounted on the frame and configured to move at least one of the toggle mechanism and the first chamber portion relative to the frame.

[0030] As an example, the toggle mechanism may include a lever that can be operated manually by the user or is attached to a geared motor, and a drive element attached to the lever. The drive element may be mounted to rotate relative to the frame about a drive direction. The toggle mechanism may further include at least one connecting rod, and preferably a single connecting rod, articulated for rotation relative to the drive element about a first axis of rotation. The connecting rod may also be connected to the second moving chamber portion, preferably directly. More preferably, the connecting rod is articulated for rotation with the second moving chamber portion about a second axis of rotation. The connecting rod may be configured to drive said second portion in a principal translational motion.

[0031] As an example, the adjustment device can be configured to move the drive element in a direction parallel to a primary translational movement of the second chamber portion. The stroke length of the toggle mechanism depends on the manufacturing tolerances of its component parts. Moving the drive element shifts the entire toggle mechanism, thus adjusting the distance between the first and second chamber portions when the infusion chamber is in its closed configuration. Specifically, in the closed configuration, this distance is set to be essentially zero. The sealing of infusion chambers in brewing groups with variations in the stroke length of the toggle mechanism can therefore be improved.

[0032] As an example, the adjustment device may include at least one adjusting screw rotatably mounted on the frame and configured to move the drive element when the adjusting screw is rotated. By rotating the screw, its degree of tightening allows for precise adjustment of the drive element's position.

[0033] In one example, the adjusting screw may bear against either the drive element or a shaft on which the drive element is mounted to rotate about the direction of rotation, so as to move the drive shaft in a translational motion parallel to the principal translational motion of the second chamber portion. At least one portion of said shaft may also be located in an oblong of the frame, this oblong extending in a direction parallel to the principal relative translational motion of the second chamber portion. In this example, since the drive element is mounted to rotate about the frame around the drive shaft, the movement of this shaft consequently moves the drive element. Preferably, both ends of the drive shaft are each located in an oblong of the frame.

[0034] In one embodiment, the drive shaft is fixed relative to the frame. Therefore, when the adjusting screw bears against this shaft, the risk of the adjusting screw loosening is reduced. This improves the long-term stability of the adjustment for the distance between the first and second chamber sections. Furthermore, the proposed adjustment device is relatively simple in design and manufacture, requiring few parts. It exhibits high robustness and further enhances the reliability of the brewing unit and the safety of the beverage preparation machine.

[0035] As an example, the adjustment device can be configured to move the first chamber portion relative to the frame, in a direction parallel to the main translational movement of the second chamber portion. Moving the first chamber portion in a direction parallel to the main relative translational movement of the second chamber portion allows the first chamber portion to be offset from the frame and, consequently, from the entire toggle mechanism, which can be connected to the second chamber portion. The distance between the first and second chamber portions can thus be adjusted when the infusion chamber is in the closed configuration. More specifically, in the closed configuration, this distance is set to be essentially zero.The sealing of the infusion chambers of infusion groups exhibiting variations in the stroke length of the toggle mechanism can thus be improved.

[0036] As an example, the adjustment device may include at least one adjusting screw rotatably mounted on the frame and configured to move the first chamber portion when the adjusting screw is rotated, in a translational motion parallel to a principal translational motion of the second chamber portion. By rotating the adjusting screw, its degree of tightening allows for precise adjustment of the position of the first chamber portion, as well as the closing force to be applied to the actuator, for example, a lever, to close the infusion chamber.For example, a toggle mechanism comprising a lever that can be operated manually by the user or is attached to a geared motor can have the lever stopped at the end of its travel by at least one stop located on the mechanism, during the transition from the open to the closed configuration of the brewing chamber. The closed configuration of the brewing chamber can thus be more precisely defined by the lever's stop. Consequently, the adjustment of the distance between the first and second chamber sections can be performed more reliably.

[0037] In one example, the lever can be fixed to a drive element, and the drive element can be mounted to rotate relative to the frame around a drive direction. The drive element can also be mounted to rotate relative to a connecting rod around an axis of rotation. At least one stop can be positioned on the connecting rod so as to bear against at least a portion of the lever when the infusion chamber is in its closed position. In this example, the lever is not actuated beyond the intended end of travel of the toggle mechanism. Actuating the lever is therefore particularly simple, since by bringing the lever and the stop into contact, the user knows that the end of travel has been reached. The toggle mechanism with this characteristic is thus more robust.Furthermore, the connecting rod can be linked to the second movable chamber section and configured to drive said section in a primary translational movement. In this example, the lever's stop minimizes, or even prevents, the second chamber section from moving away during its primary translational movement when switching from the open to the closed configuration of the infusion chamber. Therefore, the lever's stop contributes to the sealing of the infusion unit during operation.

[0038] As an example, the adjustment device can also be configured for manual adjustment or adjustment via a manually operated tool. The distance between the first and second chamber sections can thus be easily adjusted during the brewing group's manufacture and / or by a user, without necessarily requiring any special tools.

[0039] In one example, the first and second chamber sections each comprise an annular relief, these reliefs being positioned opposite each other when the infusion chamber is in its closed configuration. One of the annular reliefs may have, when projected onto a plane perpendicular to a direction parallel to the principal translational movement of the second section, a surface area less than 0.7 and preferably 0.1 times the surface area of ​​the other annular relief. Reducing the contact interface between the first and second chamber sections allows the force generated during the closure of the infusion chamber to be concentrated on this interface. Thus, the sealing of the infusion chamber is further improved.

[0040] As an example, each of the first and second chamber sections can include an annular relief, these annular reliefs having substantially identical hardness. The closing force, generated by the toggle mechanism, is thus transferred from the second chamber section to the first chamber section, via the contact interface between the annular reliefs on the first and second sections.

[0041] In one example, the frame may comprise at least two plates extending primarily in directions parallel to the main translational movement of the second portion, the frame having a general "U" shape, each arm of which is formed by a plate. The toggle mechanism is positioned between the two plates, the two plates being connected by at least one linkage element, the linkage element carrying the adjusting screw.

[0042] As an example, the group can also be configured so that the second portion has a single degree of freedom of movement relative to the frame, this single degree of freedom being a translation along a direction parallel to the main translational movement of the second chamber portion. Thus, the second portion is not rotationally articulated relative to the frame.

[0043] As an example, at least one elastic element of the sealing compensation system can be positioned between the frame and the first chamber portion. Preferably, the elastic element can comprise a plurality of compression washers.

[0044] According to one example, the group may further include an elastically deformable sealing device disposed on at least one of the first and second chamber portions, so that the sealing device is disposed in contact with each of the first and second chamber portions, in the closed configuration of the infusion chamber.

[0045] According to one example, the first and second chamber portions each include an annular relief arranged opposite each other when the infusion chamber is in closed configuration, and at least one of the first and second chamber portions further includes an additional elastically deformable annular relief.

[0046] According to one example, at least one of the first and second chamber portions further includes an additional annular relief of a lower hardness than the annular reliefs.

[0047] The manufacturing process according to the second aspect of the invention may further have the following optional characteristics, which may possibly be used in association or alternatively.

[0048] According to one example, the adjustment device comprising at least one adjustment screw mounted for rotation on the frame, the action step on the adjustment device may include a step of screwing said screw so as to move at least one of the toggle mechanism and the first portion of the chamber relative to the frame.

[0049] According to one example, the action step on the adjustment device can be carried out manually or via a manually operated tool.

[0050] It is specified that, within the context of the present invention, the term "toggle mechanism" refers to a mechanism configured to transform a rotational movement about a fixed axis, relative to a frame, into a translational movement in a direction perpendicular to said axis. During the conversion of rotation to translation, the parts involved in the toggle mechanism are configured so that at least a portion of the mechanism extends or contracts in translation along a principal direction perpendicular to said axis.

[0051] The term "packaging" refers to the container of the product from which the beverage is prepared. In the context of the present invention, packaging may, for example, correspond to what is commonly called a "capsule" or "dose." The packaging may be made of metal, plastic, paper, cardboard, or a mixture of these materials. Preferably, the packaging is made of paper.

[0052] An "open configuration" refers to a configuration of the infusion chamber where the first and second portions are separated by a distance sufficient to allow the passage of a conditioning unit between them. In an open configuration, the translational extension of the toggle mechanism is preferably minimal. A "closed configuration" refers to a configuration of the infusion chamber where the first and second portions are as close as possible to each other, or even in contact, either directly or via the conditioning unit. In a closed configuration, the translational extension of the toggle mechanism is preferably maximal.

[0053] The term "contact interface" refers to the interface between the surfaces of the first and second chamber sections. These contact surfaces are designed to be in contact, either directly or through at least part of the packaging, when the infusion chamber is in its closed configuration. The chamber's closing force is transmitted entirely, or at least 90%, through this interface.

[0054] The distance between the first and second chamber sections refers to the distance separating the contact surfaces of the first and second chamber sections. When the infusion chamber is in the closed configuration, this distance can be measured in a configuration where the first and second sections are closest together. When the contact surfaces of the first and second chamber sections are in direct contact, this distance is zero. When the contact surfaces of the first and second chamber sections are in contact via a medium, this distance is approximately equal to the thickness of the medium separating the first and second chamber sections.

[0055] A parameter that is "approximately equal to / greater than / less than" a given value means that this parameter is equal to / greater than / less than the given value, to within 10% or even 5% of that value.

[0056] The infusion group according to an exemplary embodiment of the invention is now described with reference to figures 1 to 12 .

[0057] The infusion group 1 includes a support frame 10 for group 1, an infusion chamber 11 comprising a first portion 110 and a second portion 111 of chamber, and an actuator 12.

[0058] The building is first described with reference to the figure 1 According to the example illustrated in figure 1The frame 10 comprises two plates 100, referred to as cheeks, arranged to support some or all of the elements of group 1. The plates 100 can be configured to maintain the arrangement of the elements of group 1 during use and to secure group 1 within a beverage preparation machine. For this purpose, the plates 100 can be positioned opposite each other and extend along the length of the brewing group 1. The plates 100 may have at least one, and preferably a plurality of, shapes 1003, for example, protruding portions, enabling the positioning and securing of group 1 within the beverage preparation machine. The frame may include a connecting element 101 to join the two plates 100 of the frame and secure them together. For example, the connecting element 101 is located at one end of the plates 100.The connecting element 101 may have a general beam shape, extending along a principal direction of extension and having a polygonal cross-section, for example, rectangular or square. Alternatively, and as illustrated in the figures, the connecting element 101 may have a cylindrical cross-section. This limits the manufacturing cost of this part and facilitates its assembly, thus reducing the manufacturing cost of Group 1.

[0059] Preferably, the connecting element 101 is crimped or stamped into openings carried by the two plates 100. This method of fixing prevents any rotation of the connecting element 101 relative to the plates 100. As will become apparent later, it is indeed necessary to prevent the connecting element 101 from rotating around its main axis of location.

[0060] The frame may also include a lateral joint 102, which may be referred to as a front plate, for joining the two mounting plates 100 of the frame 10 in order to secure them. Thus, the frame 10 can form a support frame for at least some, or even all, of the elements of group 1. The lateral joint 102 may, in particular, be fixed relative to the mounting plates 100. As illustrated in figure 1 , the lateral junction 102 is located at a second end of the plates 100.

[0061] The lateral joint 102 may comprise two projections 1020 configured so that each is inserted, preferably crimped, or clipped into the mounting plate 100 of the frame 10, preferably into an opening provided in the mounting plate 100. By crimping, each projection 1020 is deformed to prevent the lateral joint 102 from being withdrawn during use of group 1. As illustrated in the example shown in figure 1The lateral junction 102 can be U-shaped, thus limiting the risk of deformation. Each arm of the U-shape extends from one plate 100 to the other. This reinforces the robustness of the assembly and further limits deformation. This U-shape is particularly visible on the Figures 4A And 5A .

[0062] To support and maintain the arrangement of the elements in group 1, the plates 100, the connecting element 101, and the lateral joint 102 are preferably made of a material suitable for maintaining the arrangement of the elements in group 1 during use. Even more preferably, the plates 100, the connecting element 101, and the lateral joint 102 are made of metal.

[0063] The infusion chamber is now described with reference to the figure 1The infusion chamber 11 is configured to receive a packaging 2, for example via a packaging 2 receiving hopper 14. For this purpose, the receiving hopper 14 includes a receiving opening 140.

[0064] In this non-limiting example, the hopper 14 is mounted to move relative to the frame 10. It is supported by a packaging receiving trolley 15, which can also be referred to as a dose guide. The trolley 15 moves in translation between the two sections of the infusion chamber. The trolley 15 has several stops that allow the packaging to be stopped and held in position during the different phases of the beverage preparation cycle.

[0065] When using group 1, the infusion chamber 11 has two configurations. In an open configuration of the infusion chamber 11, the chamber can receive and / or discharge the packaging 2. More specifically, the first portion 110 and second portion 111 of the chamber are spaced apart to allow the packaging introduced into the hopper 14 to be received or discharged. In a closed configuration, the first portion 110 and second portion 111 of the chamber are designed to be positioned around at least part of the packaging 2 and to enclose it, so as to allow infusion.

[0066] The movable carriage 15 includes at least one receiving stop for the packaging 2 before its introduction into the infusion chamber. It also includes a receiving stop for the packaging 2 within the infusion chamber. The movable carriage 15 is mounted in translation on the frame 10, along the same axis as the second portion 111. Preferably, a return spring 1002 allows the movement of this carriage 15 in one direction. Preferably, this return spring 1002 tends to move the carriage 15 closer to the second portion 111 when switching from the closed to the open configuration. Thus, the return spring 1002 allows the carriage 15 to be returned to its position for the ejection of a packaging 2, or even for the loading of a new packaging 2. In addition, the return spring facilitates the unwrapping of the packaging 2, i.e., the detachment of the packaging 2 after infusion from the chamber portions.As illustrated in the figures, the return spring 1002 has one end fixed on the carriage 15 and another end fixed on the second portion 111. According to an example illustrated in . figure 5B The hopper 14 can be configured to be located upstream of the infusion chamber 11, or equivalently offset towards the actuator 12 of group 1, when the infusion chamber is in closed configuration, to facilitate the unwrapping of the packaging 2. According to an embodiment not shown, the hopper 14 and the trolley are not fixed together.

[0067] To switch between the open and closed configurations, the actuator 12 is configured to control, at least partially, the movement of at least one of the chamber portions. Preferably, the actuator controls, at least partially, the movement of the second chamber portion 111, while the first portion 110 can be fixed relative to the frame. For example, the first portion 110 comprises at least two projections 1100 inserted into the frame 10. In another example, the projections 1100 can be fixed, in particular clipped, onto the lateral joint 102. The clipping of the first portion 110 to the lateral joint 100 is particularly visible in figure 1 Or 12Furthermore, the fixed portion 110 may include a water inlet fixed to the lateral joint 102. According to one embodiment, a conduit of the water inlet is inserted through an opening carried by the lateral joint 102, then the insertion of the water inlet is continued through this opening until the clipping means 1100 of the first portion 110 cooperate with those of the lateral joint 100. The fixing of these two parts is then achieved.

[0068] According to an alternative embodiment, the first section 110 can be made mobile from the station, for example, by rotating it relative to the structure. This would facilitate the ejection of the conditioning unit 2.

[0069] The actuator 12 more specifically comprises a toggle mechanism 120, configured to transform a rotational movement about a fixed axis, relative to the frame 10, into a translational movement of the second chamber portion 111, in a direction perpendicular to this axis. The infusion chamber can thus move from an open configuration to a closed configuration and vice versa. As illustrated by the Figures 1 to 5B , the toggle mechanism can for this purpose include a lever 1201, which can be operated 30 manually by the user or attached to a geared motor, and attached to a drive part also designated as a drive element 1200. This element 1200 can be connected to a connecting rod 1203, this connecting rod 1203 being able to be connected to the second portion 111 of the chamber.

[0070] The connecting rod 1203 can, for example, be articulated on the second chamber portion 111 and on the drive member 1200. The toggle mechanism 120 may be free of an additional connecting rod between said connecting rod 1203 and the second chamber portion 111 or the drive member 1200. The toggle mechanism 120 according to this example improves the robustness of the actuator 12, while reducing the number of parts required for its operation. The toggle mechanism 120 may also comprise only the following parts moving relative to the frame 10: the lever 1201, the connecting rod 1203, and the second chamber portion 111.

[0071] More specifically, according to the example illustrated by the figures 2 and 3The drive member 1200 can be mounted for rotation relative to the frame 10 about a drive direction 1202c. The drive member 1200 is further mounted for rotation relative to the connecting rod 1203 about a rotation axis 1204. The connecting rod 1203 is connected to the second movable chamber portion 111 about a rotation axis 1206. Thus, when the lever 1201 is rotated during its actuation 30, the second chamber portion 111 can be driven in a principal translational movement perpendicular to the drive axis. Equivalently, this translational movement can be described as a principal relative translational movement of the first chamber portion 110 and the second chamber portion 111.

[0072] The main translational movement of the second portion 111 can also be guided by the frame 10. The frame 10 and the second portion 111 can more particularly be configured so as to prevent rotation of the second portion 111 of the chamber relative to the frame, particularly during the alternating transition from the open to the closed configuration of the infusion chamber 11. For this purpose, the plates 100 of the frame 10 can include a sliding rail 1001 into which, for example, two projections 1110, arranged on either side of the second portion 111 of the chamber, and two projections 1120, arranged on either side of the second portion 111 of the chamber, are inserted, so as to eliminate one degree of rotational freedom of the movable portion 111 and to allow the latter only to slide along the rail 1001 when the toggle mechanism 120 is actuation.

[0073] During the transition from the open to the closed configuration of the infusion chamber 11, which can be illustrated by the figures 2 and 3 Or 4A , 4B And 5A, 5B The lever 1201 can also be actuated to cover the receiving opening 140 of the receiving hopper 14. This prevents the insertion of packaging when the infusion chamber 11 is in the closed position. Preferably, the lever 1201 then completely covers the receiving opening 140.

[0074] During the transition from the open to the closed configuration of the infusion chamber 11, which can be illustrated by the figures 2 and 3 Or 4A , 4B And 5A, 5BThe toggle mechanism 120 may further include a stop 1205, configured to stop the lever 1201 at the end of the toggle mechanism's travel. For this purpose, the stop 1205 may be supported by the connecting rod 1203. The stop 1205 may be configured to bear against at least one portion 1201a of the lever 1201. This portion 1201a can thus act as a receiving element for the stop 1205 when the infusion chamber 11 is in the closed position. The stop includes an end 1205a configured to contact the portion 1201a. The contact between this 1205a and this portion 1201a stops the relative movement of the connecting rod 1203 and the lever 1201, thus defining the end of the toggle mechanism's travel.

[0075] According to an example not shown, this portion 1201a is a projection disposed on the lever 1201, extending parallel to the axis of rotation 1204 between the drive member 1200 and the connecting rod 1203. The projection 1201a comprises a first part on which the stop 1205 is intended to bear, and a second part extending parallel to the lever 1201 so as to increase the mechanical resistance of the projection 1201a. In addition, the stop 1205 may include a projection extending perpendicularly to the connecting rod 1203 over a distance at least greater than the distance between the drive member 1200 and the first part of the projection 1201a on which the stop 1205 is intended to bear.

[0076] For example, the stop 1205 and the portion 1201a are arranged in the median plane of group 1 to limit the offset support of the toggle mechanism 120 relative to the main translational movement of the moving portion 111. The reaction force of this contact is therefore also in the median plane of the group, which improves its robustness. In addition to reducing static stresses, this arrangement of the stop 1205 and the portion 1201a in the median plane facilitates the manufacturing of the parts, particularly by injection molding.

[0077] According to the example illustrated in figure 5B , the drive member 1200 has a projection 1201b extending perpendicularly to the main extension direction of the drive member 1200. The portion 1201a is fixed on a portion of the projection 1201b, and preferably at its end.

[0078] The toggle mechanism 120 may further include at least one return element 1207 to facilitate the transition of the infusion chamber 11 from the closed to the open configuration. For example, the return element is a spring 1207. The spring 1207 can exert a restoring force on the drive member 1200 or on the connecting rod 1203 to facilitate their relative rotation during the transition from the closed to the open configuration. Preferably, the spring 1207 is calibrated so that when the lever 1201 is not in the closed position, the spring 1207 exerts sufficient force to return the lever 1201 to the closed position.

[0079] The spring 1207 is preferably a torsion spring. The spring can be arranged around the first axis of rotation 1204. An end portion 1207a of the spring 1207 is designed to bear against a projection of the connecting rod 1203 when the infusion chamber is in its closed configuration. The projection can extend in a direction perpendicular to the direction passing through the first 1204 and second 1206 axes of rotation. The spring 1207 has a second end portion 1207b, configured to bear against a portion 1201b carried by the lever 1201.

[0080] According to the example illustrated by the Figures 4A And 5AThe toggle mechanism comprises two springs 1207 arranged on the shaft 1202, on either side of the central axis of the assembly. Typically, these two springs 1207 are positioned on either side of the drive member 1200. This allows the restoring force to be increased and distributed on either side of the drive member 1200, while minimizing the overall size of the assembly. Furthermore, the restoring force generated by the combined effect of these two springs 1207 is centered on the central axis of the assembly. This prevents the creation of torque and thus any potential torsion or deformation within the assembly. It also allows for a space, positioned on the central axis of the assembly, to accommodate the stop 1205, which is intended to cooperate with the portion 1201a.

[0081] An end portion 1207a of each spring 1207 bears against a material relief 1200a of the drive member 1200. The spring 1207 has a second end portion 1207b, configured to bear against the connecting element 101.

[0082] During the development of Group 1, it became apparent that toggle mechanisms can be affected by manufacturing tolerances. As illustrated by the previously described toggle mechanism 120, its stroke length can vary depending on the length and arrangement of its component parts. Consequently, when the infusion chamber 11 is in its closed configuration, the distance between the first portion 110 and the second portion 111 of the chamber can vary. The sealing of the infusion chamber 11 can therefore be compromised. To control the sealing of a Group 1 unit incorporating a toggle mechanism, such as the one described above, Group 1 includes an adjustment device 13, mounted on the frame 10, and configured to adjust the distance between the first portion 110 and the second portion 111 of the chamber when the infusion chamber 11 is in its closed configuration.

[0083] Adjusting the distance between the first 110 and second 111 portions of chamber 11 allows the brewing chamber 11 to be closed while limiting the force the user must apply to lever 1201. Thus, the closing force is low enough for any user to apply. The adjustment device 13 therefore both improves the group's airtightness and facilitates its use. Furthermore, the various elements of group 1 can be sized to correspond a specific level of airtightness of the brewing chamber 11 to a predetermined closing force, to be applied to lever 1201, for example, at its end. This force can be determined to be achievable by any user, typically a force exerted by a user's hand.

[0084] The adjustment device 13 also allows the volume of group 1 to be limited. Indeed, one could consider lengthening the lever 1201 to increase the force transmitted to the second portion 111 during the alternating transition between the open and closed configurations of the infusion chamber 11. However, this solution would have the disadvantage of significantly increasing the volume of group 1. The adjustment device 13 meets the requirements for sealing and ease of use, while maintaining a compact size.

[0085] Furthermore, to improve the sealing of group 1 throughout its use, the brewing group 1 may also include a sealing compensation system 115 configured to exert a compressive force on the first portion 110 and / or the second portion 111 of the chamber, tending to mutually tighten the first portion 110 and the second portion 111 in the closed configuration of the brewing chamber 11. For this purpose, the sealing compensation system 115 may include at least one elastic element. Thus, despite possible wear of the elements of group 1, or possible misalignment of the stroke length of the toggle mechanism 120, the sealing of the chamber 11 can be guaranteed. The elastic element may, in particular, exert a sufficient compressive force to keep the brewing chamber 11 hermetically sealed, for example, during the brewing of a beverage.The compressive force can also elastically compensate for any residual gap between the first portion 110 and the second portion 111 of chamber 11 in the closed configuration of the infusion chamber 11. This gap can occur, for example, in the event of significant wear on the parts or in cases where manufacturing tolerances are particularly wide. This provides an effective solution for reducing the production cost of a machine.

[0086] Alternatively or in addition, the brewing group 1 may include an elastically deformable sealing device 114 disposed on the first portion 110 and / or the second portion 111 of the chamber, so that the sealing device 114 is disposed in contact with each of the first 110 and second 111 portions of the chamber, in the closed configuration of the brewing chamber 11. Thus, the sealing device 114 keeps the brewing chamber 11 hermetically closed, in particular when brewing a beverage.

[0087] The adjustment device 13 is now described in detail. More specifically, the adjustment device 13 can be configured to move the second chamber portion 111 relative to the frame 10, along the principal direction of translation of the second portion 111, either directly or via the toggle mechanism 120. For example, moving the toggle mechanism 120 allows the position of the second chamber portion 111 to be adjusted. Alternatively or additionally, the adjustment device 13 can be configured to move the first chamber portion 110 along the principal direction of translation of the second portion 111. Furthermore, the adjustment device 13 can be configured to include a first adjustment element configured to move the second chamber portion 111 relative to the frame 10 and a second adjustment element configured to move the first chamber portion 110 relative to the frame 10.

[0088] When the infusion chamber is in the closed configuration, the distance between the first portion 110 and the second portion 111 of the chamber can be adjusted to control the sealing of the infusion chamber 11. More specifically, when the first portion 110 and the second portion 111 of the chamber are in direct contact, this distance can be set to zero. When the surfaces S1 and S2 of the first portion 110 and the second portion 111 of the chamber are in contact via a barrier 2, this distance can be set to zero or to be non-zero but less than or substantially equal to the thickness of the barrier 2 separating the surfaces S1 and S2 of the first portion 110 and the second portion 111 of the chamber. According to the example illustrated in figure 5B , a collar 20 of the packaging 2 can thus be sandwiched between the first portion 110 and second portion 111 of the chamber.

[0089] The adjustment device 13 can also be arranged in a median plane of group 1, in order to ensure good alignment of the first portion 110 and second portion 111 of chamber during their relative movement along the main direction of translation of the second portion 111.

[0090] An example of the adjustment device 13 is now described with reference to figures 5B to 7 , as well as with reference to the example of the toggle mechanism 120 described previously. The adjustment device 13 can be configured to move the drive member 1200 in a direction parallel to the relative translational movement of the first portion 110 and second portion 111 of the chamber. For this purpose, according to the example illustrated in figure 6The adjustment device 13 may include an adjusting screw 130 rotatably mounted on the frame 10. Rotation of the adjusting screw 130 causes the end of the screw 130 to move along the principal direction of translation. More specifically, in this non-limiting example, the adjusting screw 130 is rotatably mounted to pass through the connecting element 101, which can connect the two plates 100 of the frame 10, for example, by means of a nut 131. The adjusting screw 130 can be configured to move the drive element 1200 when the adjusting screw 130, and more specifically when a head or recess 1300 of the screw 130, is rotated. Preferably, the screw is rotated by a recess 1300 to minimize its footprint within group 1.

[0091] According to the example illustrated in figure 6The adjusting screw 130 can pass through the connecting element 101 so as to bear against the shaft 1202. More specifically, the adjusting screw 130 can pass through the connecting element 101 along a transverse plane median to this element 101. As stated previously, the connecting element 101 can have a circular cross-section and a flat 1010 to ensure a more stable contact surface between the adjusting screw 130 and the connecting element 101. The connecting element 101 can also be crimped into the plates 100 of the frame 10 to prevent its rotation in a direction parallel to the axis of rotation 1202c, and thus guarantee the horizontality of the screw 130. Thus, the rotation of the screw 130 causes the horizontal displacement of the axis of rotation 1202c. Furthermore, fixing the connecting element 101 by crimping is advantageously of reduced cost, reducing the manufacturing cost of group 1.

[0092] According to this example, the shaft 1202 extends between the frame plates 100, in a direction perpendicular to the drive element 1200. According to the example illustrated in figure 7 At least one portion 1202a of the shaft 1202, and preferably at least one end 1202a, can be inserted into an oblong 1000 disposed on at least one plate 100 of the frame. The oblong 1000 can be a groove, an opening, or a hole disposed on at least one plate 100, and can extend in a direction parallel to the principal relative translational movement of the first portion 110 and second portion 111 of the chamber.

[0093] Thus, when the infusion chamber 11 is in the closed configuration, the recess 1300 of the adjusting screw 130 can be rotated according to arrow F1, as illustrated in the figures 6 and 7This can induce the displacement of the shaft 1202 in the oblong 1000, along the arrow F2, parallel to the main relative translational movement of the second chamber portion 111. Thus, the toggle mechanism 120 is displaced relative to the frame 10.

[0094] Alternatively or additionally, the adjustment device may include an adjusting screw 130 configured to bear against the first chamber portion 110 in order to adjust the position of the first portion 110 relative to the frame 10. For example, at least one projection 1100 of the first portion 110, or even all of its projections 1100, may be arranged at least partially within an oblong 1000. Furthermore, in order for the adjustment device 13 to be able to move the first chamber portion 110 and the toggle mechanism 120 relative to the frame 10, the adjustment device may include two adjusting screws 130 as previously described.

[0095] Advantageously, the drive element 1200 is mounted for free rotation on the shaft 1202. Thus, the drive element 1200 can rotate about the axis 1202c when actuated, while the shaft 1202 remains fixed, rotating relative to the frame 10. Consequently, regardless of the position of the drive element 1200, the distal end of the screw 130 remains in contact with the same area of ​​the shaft 1202, without creating friction. The robustness and service life of group 1 are therefore improved.

[0096] According to one example, the shaft 1202 may have a flat surface defining a plane perpendicular to the principal direction of extension of the body 1301 of the screw 130. According to another example, and as illustrated in figure 6The shaft 1202 may have a rectangular or even square cross-section 1202b, defining a flat surface perpendicular to the principal direction of extension of the body 1301 of the screw 130. The distal end of the screw 130 is at least partially supported by the flat surface formed. This ensures a more stable and controlled contact surface between the end of the adjusting screw 130 and the shaft 1202. The robustness and durability of the adjusting mechanism are thereby improved.

[0097] The shaft 1202 may have a shape complementary to that of the frame 10 in order to prevent their respective rotation around the axis 1202c. Alternatively, contact between the distal end of the screw 130 and the flat 1202b is sufficient to prevent this relative rotation.

[0098] Furthermore, to optimize the sealing of the infusion chamber 11 in its closed configuration, one or both of the first portion 110 and second portion 111 of the chamber may include an annular relief 113. These reliefs may be arranged opposite each other when the infusion chamber 11 is in its closed configuration. These annular reliefs may be configured so that the closing force, generated by the toggle mechanism 120, is transferred from the second portion 111 to the first portion 110, via the contact interface between the annular reliefs, while concentrating the force generated during the closure of the infusion chamber 11 on this interface. Reducing the size of the contact interface concentrates the pressure generated by the closure of the infusion chamber 11 on this surface and thus increases the contact force in this area. The packaging is then tightly clamped.Thus, during the infusion of a conditioning 2, the risk of leakage from the infusion chamber 11 is minimized, or even avoided.

[0099] It can also be foreseen that a plurality of concentric reliefs may be arranged on one or both of the first portion 110 and second portion 111 of the chamber. For example, one or both of the first portion 110 and second portion 111 of the chamber may have at least one additional annular relief 113a, configured to be more compressible than the annular relief 113. Thus, elastic compensation ensures the sealing of the infusion chamber 11. This additional annular relief 113a may be arranged juxtaposed to the annular relief 113 of one or both of the first portion 110 and second portion 111 of the chamber.

[0100] An example of one method of creating this relief is now described with reference to figures 8 to 10 As illustrated in Figures 8 and 9 The first chamber portion 110 may have an annular relief 113 extending towards the second chamber portion 111 over a first distance. The first chamber portion 110 may also have an annular relief 113 extending towards the second chamber portion 111, for example, over a shorter distance than the first. For example, the annular reliefs 113 correspond to an annular projection of the first chamber portion 110 and the second chamber portion 111, respectively. At least one of the annular reliefs may have a semicircular rim in contact with the collar 20, to minimize its contact area with the collar and thus increase the seal.

[0101] The annular relief 113 of the first portion may present a surface S1, of dimension D110, projected onto a plane perpendicular to the principal direction of translation. The annular relief of the second portion 111 may further present a surface S2 and of dimension D111, projected onto a plane perpendicular to the principal direction of translation. As illustrated in Figure 10 , dimension D110 can be approximately equal to 0.70 of dimension D111, and preferably 0.5 of dimension D111. Preferably, the annular reliefs 113 have an approximately identical hardness.

[0102] The 115 sealing compensation system is now described in detail with reference to Figures 11 And 12At least one elastic element 1150 of the sealing compensation system 115 is configured to be elastically compressed in a direction parallel to the relative translational movement of the first portion 110 and second portion 111 of the chamber. Thus, the elastic element 1150 can exert a compressive force in this direction, mutually clamping the first portion 110 and the second portion 111 in the closed configuration of the infusion chamber 11. Therefore, the elastic contribution of the elastic element 1150 further minimizes, or even eliminates, the risk of leakage from the infusion chamber 11, and compensates for any potential misalignment between the first portion 110 and the second portion 111 of the chamber 11, for example, due to wear of group 1.For example, the sealing compensation system 115 allows a displacement of the fixed portion 110 of chamber 11 of less than 1 / (5*Lc), Lc being the length of the stroke traveled by the movable portion 111 between the closed and open configurations. Preferably, this displacement is less than 1 / (10*Lc).

[0103] For example, the deflection of the fixed portion 110 allowed by the sealing compensation system 115 is less than a few tenths of a millimeter, preferably less than 100 tenths of a millimeter. Typically, this deflection is between 0.5 and 0.50 millimeters.

[0104] The elastic element 1150 can be compressed during the transition from the open to the closed configuration of the infusion chamber 11, or even only in the closed configuration of the infusion chamber 11, or at the end of its travel before reaching the closed configuration of the infusion chamber 11. Alternatively, the elastic element 1150 can be elastically compressed in both the open and closed configurations of the infusion chamber, to exert a compressive force regardless of the chamber configuration, the compressive force in the closed configuration being naturally greater than in the open configuration. Thus, the elastic element 1150 is compressed continuously, limiting potential wear related to successive compressions and decompressions.

[0105] Thus, the elastic element 1150 deforms by a few tenths of a millimeter when the group switches to its closed configuration. It restores this deformation in case of wear in order to compensate for the play.

[0106] The elastic element 1150 can be a compression spring. Preferably, it consists of one or more deformable compression washers, these washers being usually referred to as Belleville washers. Preferably, the elastic element 1150 is formed of a plurality of compression washers. The elastic element 1150 can be positioned between the frame 10 and the first portion 110 of the chamber. According to the example illustrated by the Figures 11 And 12The elastic element 1150 is positioned between the lateral joint 102 and a load-distributing plate 1151. Thus, the compressive force exerted by the elastic element 1150 is distributed, on the one hand, via the plate 1151 onto the fixed portion 110 of the chamber 11, and on the other hand, via the lateral joint 102 onto the frame 10. For example, the plate 1151 is made of metal to minimize local wear which, in the absence of this load-distributing plate 1151, would be induced by the high pressure applied to the contact surface between the elastic element 1150 and the fixed portion 110 of the chamber 11.

[0107] The sealing device 114 is now described in detail with reference to figures 8 to 10The sealing device 114 may include a body that is elastically deformable, particularly in compression, and disposed between the first portion 110 and the second portion so as to be in contact with each of the first 110 and second portions 111 of chamber 11 in its closed configuration. In one example, the body is annular and is disposed substantially concentrically on an annular relief of at least one of the first portion 110 and the second portion 111 of chamber 11.

[0108] Thus, when the infusion chamber 11 is closed, the annular reliefs 113 of the first portion 110 and second portion 111 of the chamber can grip a collar 20 of the packaging 2 by means of compression of the sealing device 114. Thus, the elastic contribution of the sealing device 114 makes it possible to further minimize, or even avoid, the risk of leakage from the infusion chamber 11.

[0109] The sealing device 114 is, for example, positioned on the annular relief of the second portion 111, as illustrated in figure 9 Alternatively or in addition, the sealing device 114 may include an additional elastically deformable annular relief 113a. As illustrated in the example shown in figure 9 The annular relief 113 of the first portion 110 can be juxtaposed with an additional annular relief 113a. This additional annular relief 113a can be made of a compressible material, such as an elastomeric seal molded onto the first portion 110 of the chamber. More specifically, the additional annular relief 113a can be compressed until the annular reliefs 113 are in contact with the collar 20, as illustrated in Figure 10 .

[0110] The various components of Group 1 can be made from materials that minimize manufacturing costs while ensuring robustness over repeated use. Lever 1201 and drive element 1200 can be made of die-cast aluminum. Frame 10, pivot points, springs 1207, and screw 130 can be made of metal. Connecting rod 1203 can be made of plastic.

[0111] Group 1 according to the invention can be adjusted by an adjustment method 3, comprising a step in which the toggle mechanism 120 is actuated 30 so as to switch the infusion chamber to the closed configuration, for example as illustrated by the transition from the open configuration of the figure 2 to the closed configuration of the figure 3When the infusion chamber 11 is in the closed configuration, an action step 31 on the adjusting device 13 is further performed to adjust the distance between the first portion 110 and the second portion 111 of the chamber. For example, the action step 31 includes a screwing step 310 of the adjusting screw 130, for example according to the embodiments of group 1 described above, and for example as illustrated by the figures 6 and 7 The adjustment device 13 can also be adjusted manually or by means of a manually operated tool.

[0112] Group 1 according to the invention can further be manufactured by a manufacturing process comprising a step in which a group 1 according to the previously stated characteristics is provided, followed by a method 3 for adjusting group 1, for example as described above. To assemble group 1, the toggle mechanism 120 can first be assembled and then mounted on a first plate 100 of the frame. The portion 110 of the infusion chamber can be fixed to the lateral joint 102. The hopper 14, the carriage 15, the connecting element 101, and the lateral joint 102 can be mounted on the first plate 100 of the frame 10. The second plate 100 can be attached to the already formed assembly. The connecting element 101 and the lateral joint 102 can then be crimped to the plates 100 of the frame 10.

[0113] Group 1 can be integrated into an infusion beverage preparation machine. Specifically, the adjustment device 13, and in particular the adjustment screw 130, can be designed so that it is inaccessible once Group 1 is mounted on the beverage preparation machine. This minimizes, or even eliminates, the risk of inadvertently changing the setting, for example, during beverage preparation.

[0114] The invention is not limited to the embodiments described above and extends to all embodiments covered by the claims.

[0115] In particular, it can be foreseen that the adjustment device 13 is suitable for other toggle mechanisms than the one described as an example here. For example, it can be foreseen that the toggle mechanism 120 comprises a plurality of connecting rods 1203 in series. REFERENCES

[0116] 1 Brewing Group 10 Frame 100 Plate 1000 Oblong 1001 Sliding Rail 1002 Return Element 1003 Retaining Shape 101 Connecting Element 1010 Flat 102 Lateral Junction 1020 Projection 11 Brewing Chamber 110 First Portion 1100 Projection 111 Second Portion 1110 Projection 1120 Projection 113 Annular Relief S1 Surface Area of ​​the Annular Relief of the First Portion D110 Dimension of the Annular Relief of the First Portion S2 Surface Area of ​​the Annular Relief of the Second Portion D111 Dimension of the Annular Relief of the Second Portion 113a Additional Annular Relief 114 Sealing Device 115 Sealing Compensation System 1150 Elastic Organ 1151 Force distribution plate 12 Actuator 120 Toggle mechanism 1200 Drive element 1200a Material relief 1201 Lever 1201a Lever portion 1201b Lever portion 1202 Shaft 1202a Shaft portion 1202b Rectangular section 1202c Drive direction 1203 Connecting rod 1204 First axis of rotation 1205 Thrust bearing 1205a End1206 Second axis of rotation 1207 Return element 1207a First end part 1207b Second end part 13 Adjustment device 130 Adjustment screw 1300 Screw head 1301 Portion of the screw body 131 Nut 14 Receiving hopper 15 Receiving trolley 140 Receiving opening 2 Packaging 20 Collar 30 Toggle mechanism actuation 31 Adjustment device action 310 Screwing

Claims

1. An infusion group (1) for a beverage infusion machine from a product contained in a packaging (2), the group (1) comprising: - a frame (10) for supporting the group (1); - an infusion chamber (11) configured to receive the packaging (2) during the infusion, said chamber (11) being defined by at least a first chamber portion (110) and a second chamber portion (111), the second chamber portion (111) being movable relative to the frame (10) through a main translational movement of the second portion (111), so as to move away from or closer to the first chamber portion (110) in order to bring the infusion chamber (11) into an open or closed configuration, respectively; - an actuator (12) arranged to at least partly control displacement of the second portion (111), the actuator (12) comprising a toggle mechanism (120), the second portion (111) being at least partly carried by the actuator (12); the group (1) also comprises an adjustment device (13) disposed on the frame (10), configured to adjust the distance between the first chamber portion (110) and the second chamber portion (111) when the infusion chamber (11) is in the closed configuration, characterised in that the adjustment device (13) is configured to displace at least one of the first chamber portion (110) and the second chamber portion (111) relative to the frame (10), the second chamber portion (111) being displaced by the adjustment device (13) either directly or through a displacement of the toggle mechanism (120) by the adjustment device (13).

2. The infusion group (1) according to the preceding claim, wherein the toggle mechanism (120) comprises: - a lever (1201) manually actuatable by the user or driven by a motor reducer, - a drive member (1200), integral with the lever (1201), said member (1200) being rotatably mounted relative to the frame (10) about a drive direction (1202c), - at least one, and preferably a single, connecting rod (1203) rotatably articulated relative to said member (1200) about a first axis of rotation (1204), said connecting rod (1203) being further connected, preferably directly, to the second movable chamber portion (111), preferably by being rotatably articulated about a second axis of rotation (1206), said connecting rod (1203) being configured to drive said second portion (111) in a main translational movement, preferably, the adjustment device (13) is configured to displace the drive member (1200), preferably along a direction parallel to the main translational movement of the second portion (111).

3. The infusion group (1) according to the preceding claim, wherein the adjustment device (13) comprises at least one adjusting screw (130) rotatably mounted to the frame (10), and configured to displace the drive member (1200) when said screw (1300) is rotatably driven, preferably, said screw (130) is bearing against one of the drive member (1200) and a drive shaft (1202), to which the drive member (1200) is rotatably mounted about a drive direction (1202c), so as to displace the drive shaft (1202) along a translational movement whose direction is parallel to the main translational movement of the second chamber portion (111), at least one portion (1202a) of said shaft (1202) being disposed in an oblong (100) of the frame (10), said oblong (100) extending in parallel to the main translational movement of the second chamber portion (111).

4. The infusion group (1) according to claim 1, wherein the adjustment device (13) is configured to displace the first chamber portion (110) relative to the frame (10) along a direction parallel to the main translational movement of the second chamber portion (111), preferably the adjustment device comprises at least one adjusting screw (130) rotatably mounted to the frame (10), and configured to displace the first chamber portion (110) when said screw (130) is rotatably driven, in a translational movement whose direction is parallel to the main translational movement of the second chamber portion (111).

5. The infusion group (1) according to any one of the preceding claims, wherein the toggle mechanism (120) comprises a lever (1201) manually actuatable by the user or integral with a motor reducer, said lever (1201) is stopped at the end of travel of the toggle mechanism (120) by at least one stop (1205) disposed on the toggle mechanism (120), when shifting from the open configuration to the closed configuration of the infusion chamber (11), preferably, said lever (1201) is integral with a drive member (1200), said member being rotatably mounted relative to the frame (10) about a drive direction (1202c), said member (1202) being further rotatably mounted relative to a connecting rod (1203) about a first axis of rotation (1204), said at least one stop (1205) is disposed on the connecting rod (1203) so as to bear against at least one portion (1201a) of the lever (1201) when the infusion chamber (11) is in the closed configuration.

6. The infusion group (1) according to any one of the preceding claims, wherein the adjustment device (13) is configured to be adjusted either manually or through a manually actuated tool.

7. The infusion group (1) according to any one of the preceding claims, wherein the first chamber portion (110) and the second chamber portion (111) each comprise an annular relief (113) disposed opposite to each other when the infusion chamber (11) is in a closed configuration, one of the annular reliefs (113) having, in a projection onto a plane perpendicular to a direction parallel to the main translational movement of the second portion (111), a surface area (S1) that is less than 0.7 and preferably 0.1 times the surface area (S2) of the other of the annular reliefs (113).

8. The infusion group (1) according to any one of the preceding claims, wherein the adjustment device (13) comprises at least one adjusting screw (130) rotatably mounted to the frame (10), the adjusting screw (130) being configured to displace at least one of the first chamber portion (110) and the second chamber portion (111) when said screw (1300) is rotatably driven, and wherein the frame comprises at least two plates (100, 100) mainly extending along directions parallel to the main translational movement of the second portion (111), the frame (10) having a generally "U" shape, the branches of which are each formed by a plate (100, 100), the toggle mechanism being disposed between the two plates (100, 100), the two plates (100, 100) being interconnected by at least one connecting element (101), the connecting element (101) carrying the adjusting screw (130).

9. The infusion group (1) according to any one of the preceding claims, the group (1) further comprising a sealing compensation system (115) comprising at least one elastic member (1150) configured to exert on at least one of the first chamber portion (110) and the second chamber portion (111) a compressive force tending to mutually tighten the first portion (110) and the second portion (111) in the closed configuration of the infusion chamber (11) preferably the at least one elastic member (1150) is configured to be elastically compressed in the open configuration of the infusion chamber (11) and in the closed configuration of the infusion chamber (11), the at least one elastic member comprising at least one of a compression spring and at least one compression washer, preferably the at least one elastic member, for example a plurality of compression washers, is positioned between the frame (10) and the first chamber portion (110).

10. The infusion group (1) according to any one of the preceding claims, the group (1) further comprising an elastically deformable sealing device (114) disposed on at least one of the first chamber portion (110) and the second chamber portion (111), such that the sealing device (114) is disposed in contact with both the first (110) and second (111) chamber portions, in the closed configuration of the infusion chamber (11).

11. A method for adjusting an infusion group (1) according to any one of the preceding claims, comprising at least the following steps: - actuating (30) the toggle mechanism (120) so as to shift the infusion chamber (11) to the closed configuration; - acting (31) on the adjustment device (13) in order to adjust the distance between the first chamber portion (110) and the second chamber portion (111), when the infusion chamber (11) is in the closed configuration, preferably, the adjustment device (13) comprises at least one adjusting screw (130) rotatably mounted to the frame (10), the step (31) of acting on the adjustment device (13) includes a step (310) of screwing said screw (130) so as to displace at least one of the toggle mechanism (120) and the first chamber portion (110) relative to the frame (10), preferably, the step (31) of acting on the adjustment device (13) is performed manually or through a manually actuated tool.

12. A method for manufacturing an infusion group (1), comprising at least the following steps: - providing an infusion group (1) according to any one of claims 1 to 10: - implementing the method for adjusting the infusion group (1) according to claim 11.

13. A machine for preparing a beverage by infusion, from a product contained in a package, comprising an infusion group (1) according to any one of claims 1 to 10, as well as at least one boiler and a pump, the boiler and pump being configured to supply the infusion chamber with a heated and pressurised fluid.

14. An assembly comprising a beverage preparation machine according to claim 13 and at least one package (2).