Capsule holder device for a beverage preparation machine

Abstract

A capsule holder device for a beverage preparation machine comprises an axially hollow annular support body having a central axis, with a peripheral wall provided with lateral appendages for fixing a handle, and coupling means for coupling with a hot water dispensing unit of the beverage preparation machine. Inside the support body is mounted a receiving assembly having a respective central axis substantially coinciding with the central axis of the support body. The receiving assembly comprises a container body having a corresponding peripheral wall and a bottom which define a cavity able to receive a capsule. At the bottom of the container body are provided lower perforation means able to cause perforation of an outlet wall of a capsule contained in the cavity. The lower perforation means comprise a plurality of lips supported by a disc-shaped support which is angularly rotatably mounted inside the cavity for rotation about the central axis of the receiving assembly.

Description

Technical Field

[0001] This invention generally relates to machines for preparing beverages, particularly espresso, and in particular, focused on devices designed to allow the use of capsules in preparation machines primarily conceived for preparing beverages from bulk powdered or granular precursors. The invention has preferred applications in the field of specialized machinery, such as for use in bars and other catering establishments. Background Technology

[0002] Espresso preparation in a brewing machine is typically done by loading a specific dose of powdered coffee into a designated brewing chamber. Water is then passed through the coffee powder, causing the resulting beverage, obtained through percolation, to be dispensed into containers, such as cups. Therefore, in these machines, the precursors to the beverage are supplied in bulk.

[0003] In the first type of solution, the preparation machine includes a container for storing a certain amount of coffee beans and an integrated grinding device to grind the beans and provide a specific dose of powder required for the preparation of espresso. At the outlet of the grinding device, the dose of coffee powder reaches the preparation chamber, where it is then mixed with espresso dispensed from the chamber via appropriate nozzles using hot water supplied by a boiler or similar means. These machines, often referred to as bean-to-cup machines, are typically used in homes.

[0004] In specialized machines, such as those used in bars and other catering establishments, the preparation chamber is partially defined in a so-called filter holder device, which includes a filter cup into which a dose of coffee is manually loaded by the operator. The dose is typically taken from a grinding and metering device adapted to store relatively large quantities of coffee beans and configured to selectively dispense single doses of coffee powder. The filter holder device of the preparation machine is typically configured as a grippable arm and is configured to connect to the dispensing unit of the preparation machine, usually by means of a bayonet coupling, in order to define the preparation chamber. After the filter holder arm containing the dose of coffee has been connected to the dispensing unit, the operator can control the start of the preparation cycle, during which hot water supplied via the dispensing unit passes through the dose of coffee, where the espresso produced by percolation through the channels of the filter holder arm reaches the container below, such as a cup.

[0005] Coffee preparation machines, primarily for home use, are also known, designed to supply pre-packaged capsules, each containing a corresponding dose of coffee powder. In these cases, the user is instructed to load one such capsule into the machine (except in machines equipped with an automatic capsule loader), which is then supplied to the preparation chamber. This chamber is typically conceived as two parts, at least one of which is movable relative to the other to present an open and closed position. In the open position, a new capsule is loaded into one of the two parts of the chamber (and previously processed, used capsules are expelled from that part of the chamber), while in the closed position, hot water is supplied into the chamber to pass through the coffee contained in the capsule, and the beverage is served at the outlet. The pre-packaged capsules can be sealed or unsealed: particularly in the first case, the two parts of the preparation chamber are typically provided with their respective piercing devices to pierce the capsule at its inlet end for the introduction of hot water, and at its outlet end for the outflow of espresso. Essentially, a similar approach can be used to prepare other beverages using capsules, starting with powdered or granular precursors, which may also be soluble: for example, preparations based on tea, chocolate, barley, ginseng, powders, and herbal teas and soups.

[0006] For various reasons, such as those related to the hygiene and preservation of coffee powder, the use of pre-packaged capsules has been proposed for machines equipped with filter holder arms (i.e., machines traditionally designed to prepare espresso from a fixed dose of powdered or granular precursor in bulk form). These solutions typically involve using capsule holder devices that are essentially configured as the aforementioned filter holder arms, but which define a chamber pre-arranged to receive capsules rather than bulk doses of powdered precursor.

[0007] When the device is designed for use with sealed capsules, its receiving chamber has a piercing device at its bottom, which has a tip configured to pierce the outlet end of the capsule. Conversely, the dispensing unit of the preparation machine also has a corresponding piercing device with a tip configured to pierce the inlet end of the capsule. This type of solution is known from WO 2020 / 089830 A1.

[0008] Even in solutions of the type shown, the device that allows the capsule holder assembly to be coupled to the dispensing unit of the preparation machine is a bayonet type. This coupling system means that the capsule holder assembly moves axially relative to the dispensing unit to assemble the former's cam coupling into the latter's corresponding seat, and that the capsule holder assembly subsequently moves at an angle relative to the dispensing unit to cause the aforementioned cam coupling to slide on the inclined surface of the bayonet system, thereby securing the two parts together.

[0009] In the solution according to WO 2020 / 089830 A1, the inlet wall of the capsule contained in the capsule holder device can be pierced by means of the tip of the piercing device associated with the dispensing unit of the preparation machine, using the aforementioned axial movement. On the other hand, the piercing of the capsule's outlet wall is achieved during beverage preparation by utilizing the deformation of the outlet wall: in practice, as the dispensing unit introduces pressurized hot water into the capsule through the hole obtained by the upper piercing device, the capsule's outlet wall deforms outward, thereby pressing against the tip of the lower piercing device and thus being pierced, so as to allow the beverage to flow out.

[0010] However, it has been found that during the aforementioned axial movement of the device, the outlet wall of the capsule can occasionally be partially punctured by the tips of the puncturing devices located inside the capsule holder device, or these tips can engage with the outlet wall of the capsule in any case, even without completely puncturing it. This can happen, for example, when using capsules with an axial dimension even slightly larger than the axial dimension conceived for the filter holder device, or even simply due to excessive manual pushing of the capsule inside the receiving chamber of the capsule holder device.

[0011] During the subsequent angular movement applied to the capsule holder, the fact that the capsule is restrained by the upper and lower tips of the two piercing devices has the effect of causing the capsule itself to twist, which can cause, for example, excessive tearing of the inlet wall, and if it is already punctured or partially punctured, also excessive tearing of the outlet wall. Excessive tearing can lead to poor brewing quality due to hot water passing too quickly through the beverage precursor (i.e., reduced contact time with it) and / or undesirable leakage of precursor residue from the capsule. Summary of the Invention

[0012] In summary, the present invention aims to provide a capsule retainer device of the type shown without the aforementioned disadvantages. Another object of the present invention is to provide a capsule retainer device that has a simple and inexpensive construction, yet allows for high-quality performance for beverage preparation purposes.

[0013] According to the invention, at least one of the above-described objectives is achieved by a capsule retainer device having the features pointed out in the appended claims. The claims form part of the technical teachings provided herein in relation to the invention. Attached Figure Description

[0014] Further objects, features, and advantages of the invention will become apparent from the following description with reference to the accompanying drawings, which are provided by way of non-limiting example only, wherein:

[0015] - Figure 1 and Figure 2These are, respectively, a side view and a bottom view of a capsule retainer device according to a possible embodiment;

[0016] - Figure 3 This is an exploded view of a portion of a capsule holder device according to a possible embodiment and an upper perforated element configured for mounting on a dispensing unit of a beverage preparation machine.

[0017] - Figure 4 , Figure 5 and Figure 6 These are perspective, bottom, and sectional views of the container body of the receiving component of the capsule holder device according to a possible embodiment;

[0018] - Figure 7 This is a cross-sectional view of the first annular sealing element of the receiving assembly of the capsule retainer device according to a possible embodiment;

[0019] - Figure 8 and Figure 9 These are bottom and cross-sectional views of the second annular sealing element of the receiving assembly of the capsule retainer device according to a possible embodiment;

[0020] - Figure 10 and Figure 11 These are bottom and cross-sectional views of the annular component of the receiving assembly of the capsule holder device according to a possible embodiment;

[0021] - Figure 12 , Figure 13 , Figure 14 and Figure 15 These are side views, sectional views, bottom views, and perspective views of the sleeve of the receiving assembly of the capsule retainer device according to possible embodiments;

[0022] - Figure 16 and Figure 17 This is a top view and a cross-sectional view of another annular sealing element of the receiving assembly of the capsule retainer device according to a possible embodiment;

[0023] - Figure 18 , Figure 19 and Figure 20 These are bottom views, first sectional views, and second sectional views of the locking member of the receiving assembly of the capsule retainer device according to a possible embodiment.

[0024] - Figure 21 , Figure 22 and Figure 23 These are perspective, sectional, and top views of the perforation device of the receiving assembly of the capsule retainer device according to a possible embodiment;

[0025] - Figure 24 This is a cross-sectional view of the receiving component of a capsule retainer device according to a possible embodiment, which includes... Figure 4-23Components;

[0026] - Figure 25 , Figure 26 and Figure 27 These are perspective, top, and sectional views of an upper perforated element configured for mounting on a dispensing unit of a beverage preparation machine, according to a possible embodiment.

[0027] - Figure 28 yes Figure 27 Details;

[0028] - Figure 29 It is similar to the possible variant embodiments. Figure 25-27 A perspective view of the upper perforated element;

[0029] - Figure 30 and Figure 31 It is possible to be with Figure 25-27 Top and perspective views of a micro-perforated plate associated with an upper perforated element of the type shown;

[0030] - Figure 32 It is more than Figure 30 A larger proportion of the view;

[0031] - Figure 33 This is a perspective view of the general dispensing unit of a beverage preparation machine;

[0032] - Figure 34 This is intended to illustrate the point that... Figure 25-27 The type of upper perforated element shown in the figure and Figures 30-31 The type of microperforated plate shown is installed on Figure 33 A schematic diagram of possible arrangements on the type of allocation unit shown; and

[0033] - Figure 35 and Figure 36 These are devices similar to those according to possible alternative embodiments. Figure 3 and Figure 24 The view. Detailed Implementation

[0034] References to "embodiment" or "one embodiment" within the framework of this specification are intended to indicate that a particular configuration, structure, or feature described with respect to that embodiment is included in at least one embodiment. Therefore, phrases such as "in an embodiment," "in one embodiment," "in various embodiments," etc., which may appear at different points in this specification, do not necessarily refer to the same embodiment. Furthermore, specific constructions, structures, or features defined within the framework of this specification can be combined in one or more embodiments in any suitable manner, and may even differ from those described. Reference numerals and spatial references (such as "upper," "lower," "top," "bottom," etc.) used herein are merely for convenience and therefore do not limit the area of ​​protection or the scope of the embodiments. The same reference numerals are used in the drawings to denote similar or technically equivalent elements.

[0035] In the following description and appended claims, unless otherwise stated, terms such as “precursor” should be understood to refer indiscriminately to a single substance or a mixture of several substances.

[0036] First refer to Figure 1 and Figure 2 According to a possible embodiment, reference numeral 1 generally indicates a capsule holder device for a beverage preparation machine.

[0037] Device 1, also referred to herein as a “capsule holder”, comprises an annular support body 2, preferably formed of a metallic material, having a central axis X1. The support body 2 is axially hollow to partially accommodate a receiving assembly, generally indicated by 3, as described below, and for receiving a capsule 20, the concept of which is known per se.

[0038] For example, capsule 20 may have a generally tray-like or cup-like shape, containing a dose of a beverage precursor, assumed here to be coffee powder. Typically, the body of capsule 20 has sidewalls or peripheral walls 20a, a bottom wall 20b closing the body at one end of the sidewall 20a, and a closing wall 20c closing the body at the end opposite to the rear wall 20b. The body of capsule 20 may be formed of plastic or metal, with the wall 20c, made of sealing foil, sealingly connected to the sidewalls 20a, particularly at the outer annular flange 20d surrounding the opening portion of the body. In an exemplary case, the body of capsule 20 has a cup or tray construction that radiates from the bottom wall 20b toward the end closed by the wall 20c: this radiating shape is a truncated cone shape; however, this is not necessary, as capsule 20 can have different overall shapes according to known techniques. Reference Figure 1 In the example shown, walls 20b and 20c respectively provide the outlet and inlet ends of capsule 20.

[0039] Also refer to Figure 3 The support body 2 has a peripheral wall 2a with an upper edge 2b and a lower edge 2c, the first edge preferably having a diameter at least slightly larger than the second edge. The peripheral wall 2a has lateral attachments 2d for securing a handle or grip 2e and for connecting to a hot water distribution unit (e.g., belonging to the preparation machine). Figure 33 The device is connected to the type of distribution unit shown in the figure.

[0040] For the purpose of releasably engaging with the aforementioned dispensing unit, the aforementioned connecting device is of a type that presupposes that the support body 2 makes at least one angular movement about the corresponding central axis X1. Preferably, the device is of the bayonet type and therefore includes at least two pins or cam elements that project radially outward from the peripheral wall 2a, preferably in diametrically opposed positions; on the other hand, the dispensing unit, for example in Figure 33 The dispensing unit, denoted by 50, has two insertion seats 53 into which pin 2f can be inserted by means of axial movement of the body 2. Subsequently, by angularly moving the body 2 about its central axis X1, the lower surface of pin 2e slides on the inclined upper surface of two corresponding inclined surfaces 54, each facing the corresponding insertion seat 53, thereby securing the body 2 relative to the assembly 50, all according to techniques known per se.

[0041] The support body 2 described so far can therefore be considered a generally known concept: the difference of the capsule holder 1 lies in the presence of a receiving component 3 within this support body 2, which... Figure 24 It is shown in an assembled state, and its components are in... Figure 3-23 Shown separately. As will become clear later, component 3 has a corresponding central axis, in Figure 24 In the assembled state, the central axis is represented by X2, which is substantially coincident with the central axis X1 of the supporting body 2.

[0042] First refer to Figure 4-6 The receiving component includes, for example, a cup-shaped container body formed of a metallic material, having a peripheral wall 4a and a bottom 4b, which defines a chamber 4c that opens at the top and is capable of receiving the capsule 20. Figure 6 Preferably, the chamber 4c has an inner circumferential profile or surface that is at least partially complementary to the profile of the capsule 20 (particularly the profile of its sidewall 20a).

[0043] In various embodiments, the container body 4 has a flange 4d projecting radially outward from the wall 4a at one end opposite the bottom 4b. This flange 4d has a circumferential surface defining a seat 4e for a first annular sealing element. Figure 3 and Figure 7The symbol is represented by 5. In various preferred embodiments, the second seat 4f is defined at the upper surface of the flange 4d for a second annular sealing element, which is located in... Figure 3 and Figure 8-9 The whole is represented by 6.

[0044] The bottom 4b of the container body 4 has at least one outlet conduit. In various embodiments, the bottom 4b has a tubular cylindrical protrusion 4g that axially passes through the terminal portion 4h of the aforementioned outlet conduit, the terminal portion connecting to the overlying inlet portion 4i, which is generally flared or funnel-shaped and confined within the bottom 4b. The cylindrical protrusion 4g may have external threads, which are only present in the bottom 4b. Figure 6 In Chinese, it is represented by 4g'.

[0045] exist Figure 7 The aforementioned first sealing element 5, which can be seen in the image, is preferably a radial sealing gasket made of an elastomeric material, such as an O-ring. Figure 8-9 The second sealing element 6 shown is a gasket for axial or front sealing: in this example, element 6 is a T-shaped gasket having a disc portion 6a for performing a seal and an engagement portion 6b configured for insertion into a corresponding front seat 4f of the flange 4d of the container body 4. The sealing element 6 is also preferably formed of an elastomeric material.

[0046] In various embodiments, the receiving component 3 further includes a tubular body, the tubular body being... Figure 3 and Figure 10-11 The tube is denoted by 7 and is formed, for example, from a metallic material. The tubular body 7 has a corresponding peripheral wall 7a that is generally cylindrical, and has an upper edge 7b and a lower edge 7c. In this example, the upper edge 7a is bent—preferably having a generally inverted U-shape—to project outwards from the tubular body 7, while the lower edge 7c is bent to project inwards from the body 7.

[0047] The tubular body 7 is designed to internally receive at least one upper portion of the container body 4, the lower portion of which protrudes below, beyond the lower edge 7c, for example as... Figure 24 As can be seen, in the assembled state, the sealing element 5 is operatively in contact with the inner surface of the peripheral wall 7a of the tubular body 7.

[0048] In various preferred embodiments, another annular element can be operably disposed between the lower edge 7c of the peripheral wall 7a of the tubular body 7 and the lower surface of the flange 4d of the container body, which in Figure 16-17 The whole is represented by 8, for example, a sealing element also formed of elastomeric material.

[0049] In various embodiments, the receiving component 3 further includes a bushing or sleeve, which in Figure 3 and picture Figure 12-15 The sleeve 9 is generally represented by the number 9, and is formed, for example, from a metallic material. The sleeve 9 is substantially cylindrical and has an inner diameter that is substantially the same as the outer diameter of the side wall 4a of the container body 4, so that the sleeve 9 can be inserted into the side wall 4a, such as... Figure 24 As can be seen in the text.

[0050] In various embodiments, the cylindrical wall of the sleeve 9 has an upper portion 9a with externally threaded sections, the threads being only present on the outer surface of the sleeve. Figure 13 The upper portion 9a is denoted by 9a'. Preferably, the upper portion 9a has a greater wall thickness than the lower portion 9b of the same sleeve 9, which has a reduced outer diameter.

[0051] Preferably, the lower portion 9b of the sleeve 9 has a pair of flat surfaces 9b' at diametrically opposite positions to facilitate the assembly of the receiving assembly 3 using tools or equipment of known concept.

[0052] Also preferably, the upper portion 9a of the sleeve 9 has an outer annular throat 9a” near its upper edge, which is adapted to cooperate with another possible annular element 8, as described below. This annular element 8, configured as a sealing element, in... Figure 16 and Figure 17 As can be seen, in this configuration, element 8 has a generally circular cross-section, but preferably has an upper lip 8a so as to also perform a seal relative to the lower surface of the flange 4d of the container body 4, such as Figure 24 As can be seen in the text.

[0053] In the assembled state, such as Figure 24 As shown, a portion of a sleeve 9 extends inside the tubular body 7, which at least partially surrounds the peripheral wall 4a of the container body 4, and another annular element 8 is operatively disposed between the inner peripheral surface of the wall 7a of the tubular body 7 and a corresponding portion of the outer peripheral surface of the upper portion 9a of the sleeve 9.

[0054] In various embodiments, an annular locking member is screwed onto the external thread 9a' of the upper portion 9a of the sleeve 9a, which... Figure 3 and Figure 18-21 The entire part is represented by 10, for example, formed of a metallic material. The locking member 10 essentially performs the function of a nut and is provided for the purpose of an internal thread 10a, which is adapted to engage with the external thread 9a' of the sleeve 9, and is provided on the outside at diametrically opposite positions with a pair of flat surfaces 10b to facilitate the assembly of the receiving assembly 3 using suitable tools or equipment of known concept.

[0055] like Figure 24As shown, in an exemplary embodiment, the sleeve 9 fitted onto the container body 4 protrudes below the tubular body 7, and the locking member 10 is screwed onto the thread 9a' of the sleeve 9, such that the lower edge 7c of the sleeve itself is pushed against the lower surface of the flange 4d of the container body 4, with another annular element 8 interposed therebetween, which here serves as a sealing element. Figure 12-15 The outer annular throat, indicated by 9a”, can be advantageously configured to allow the sealing element 8 to undergo a certain degree of lateral deformation when it is axially compressed. Thus, it can be seen that, in various preferred embodiments, another annular element 8 applies both a radial seal (between the interior of the tubular body 7 and the exterior of the sleeve 9) and an axial seal (between the lower edge 7c of the tubular body 7 and the underside of the flange 4d of the container body 4).

[0056] In a preferred embodiment, through simple mechanical intervention, for example by means of a tubular body 7, the upper edge 7b of which has a larger diameter than the upper edge 2b of the supporting body 2. Figure 3 With a larger diameter, the receiving component 3 is constrained within the supporting body 2, that is, within the axially penetrating cavity defined by the peripheral wall 2a. However, other methods of fixing the component 3 to the body 2 are not excluded.

[0057] In the assembled state, the tubular cylindrical protrusion 4g of the container body 4 also protrudes below the support body 2, and is connected to it by... Figure 1-3 The dispensing nozzle, generally indicated by 11, has at least one corresponding outlet 11a, into which a sealing ring may be inserted, for example, fitted into a corresponding seat of the protrusion 4g (similar to...). Figure 35 and Figure 36 As shown, one such sealing ring is indicated by 11b. The connection between the protrusion 4g and the nozzle 11 can, for example, utilize Figure 6 The nozzle 11 is screwed onto the external thread 4g', and the nozzle is provided with a corresponding internal thread.

[0058] A lower perforation device is provided at the bottom 4b of the container body 4. Figure 3 The lower perforation device, generally designated 15, is configured to pierce the outlet wall 20b of the capsule 20. Figure 1 The perforating device includes multiple tips.

[0059] One possible embodiment of the perforation device 15 is in Figure 21-23 As shown. The device 15 includes, for example, a disc-shaped support 15a made of plastic, which supports a plurality of upwardly projecting tips 15b, which are formed, for example, of a metal material. The tips 15b are preferably aligned with the central axis (X2, X3) of the receiving assembly 3. Figure 24A substantially concentric arrangement of at least one circular circle, preferably of at least two circular circles of different diameters, such as... Figure 23 As shown in the image.

[0060] In various preferred embodiments, for some of the tips, tip 15b has at least one axial channel, such as Figure 22 As shown by the shaded line in the figure, it is denoted as 15b'. In this type of embodiment, the tip 15b can be designed to extend through the disc-shaped support 15a, thereby allowing the beverage to flow out. Multiple channels 15b' can also be provided in the same tip, such as for some of the tips 15b... Figure 23 As shown in the shaded area, in this example it includes three channels 15b' that are approximately 60° apart from each other.

[0061] In other embodiments, the tip 15b may not have an axial channel or groove, and the disc-shaped support 15a has at least one through opening; this is the case in Figure 23 As shown, a single through opening 15c is provided at the center of the disc-shaped support 15a for this purpose, but in possible variant embodiments, a diameter smaller than 15c is conceivable. Figure 23 In some cases, openings 15c are confined to an eccentric position on the support itself: this situation occurs in Figure 21 As shown in the image.

[0062] Instead of an axial channel, tip 15b may also provide one or more surface grooves.

[0063] According to one aspect of the invention, the disc-shaped support 15a is rotatably mounted inside the chamber 4c of the container body 4 so as to circumferentially rotate around the central axis (X2, X3) of the receiving assembly. Figure 24 Rotation. For example, refer to... Figure 6 In various preferred embodiments, a rotating seat, indicated by 4l, is defined inside the chamber 4c of the container body 4, and a disc-shaped support 15a is rotatably connected to or disposed in this rotating seat; as Figure 6 As shown, the seat 4l is at least partially defined in the inner peripheral surface of the chamber 4c and has an outer peripheral profile that is substantially complementary to the outer peripheral profile of the disc support 15a, with a diameter slightly larger than the outer peripheral profile to allow for easy rotation.

[0064] In various preferred embodiments, the receiving component 3 includes a restraining device configured to prevent undesirable displacement of the disc-shaped support 15a in the axial direction of the same component. (See again...) Figure 6 The constraint device may, for example, include a circumferential rib 4k on the inner circumferential surface of the chamber 4c. The rib 4k defines a diameter slightly smaller than the diameter of the seat 4l and the disc-shaped support 15a, thereby allowing the support itself to be substantially snapped into the seat 4l.

[0065] exist Figure 24 In the assembled state, one or more channels 15b' of the tip 15b and / or one or more through openings 15c of the disc support 15a face the flared portion 4i of the outlet conduit of the container body 4 so as to allow the beverage to flow out easily.

[0066] As previously described, the capsule holder 1 may be part of a kit designed to allow the use of the capsule 20 on a beverage preparation machine equipped with a hot water dispensing unit. In various embodiments, such a kit also includes an upper piercing element configured for mounting on the dispensing unit of the preparation machine.

[0067] An example of this type of upper piercing element, generally indicated by 30, is in Figure 3 Visible in and Figure 25-28 It is shown in detail in the text.

[0068] Element 30 has a corresponding cup body, for example formed of a metallic material, having a peripheral wall 30a and a bottom wall 30b. In various embodiments, for example, the peripheral wall 30a, which is at least slightly truncated conical, is designed to at least partially surround a corresponding portion of the dispensing unit, as described below. The bottom wall 30b is provided with a plurality of through openings 30c for the passage of thermally prepared water.

[0069] In various preferred embodiments, element 30 is fixed to the machine by press fit or interlocking, and its bottom wall 30b therefore does not necessarily have a fixing hole. However, in other embodiments, it is conceivable that the bottom wall 30b has at least one fixing hole, for example in Figure 25 The hole is denoted by 30d at its center. The bottom wall 30b also has a plurality of downwardly projecting blades or tips 30e. In various embodiments, the blades 30 are integrally defined by cutting and bending the flaps of the bottom wall 30b, particularly after the opening 30b has been defined in the wall. In such embodiments, as Figure 27 As shown, the blade 30e has at least an approximately triangular profile. The blades are preferably arranged substantially circumferentially and may have, for example, a thickness between 0.2 and 0.4 mm, a height between 5 and 6 mm, and a width between 6 and 7 mm. The openings 30c do not necessarily all have the same diameter; for example, first openings arranged in a ring may be provided, each having a diameter between 3 and 4 mm, and second openings arranged in a ring may be provided, each having a diameter between 2 and 3 mm.

[0070] Note that the height of the peripheral wall 30a can vary depending on the type of distribution member on which the element 30 is to be mounted. For example, Figure 29 It shows the relationship with Figure 25-28The piercing element is similar to the piercing element 30, but its peripheral wall 30a has a reduced height.

[0071] In various embodiments, the lower piercing element 30 is associated with a micro-perforated plate that rests against the outer side of the bottom wall 30b of the element 30 during use. The micro-perforated plate defines multiple slits for the blade 30e and multiple fluid passages for hot water.

[0072] An example of a microperforated plate is in Figure 30-32 As shown in the diagram, the plate, designated 40, has a thin, circular body, preferably made of a metallic material, for example having a thickness between 0.2 and 0.4 mm and a diameter substantially corresponding to the diameter of the lower wall 30b of the piercing element, for example, between 50 and 60 mm. A slit 40a is defined in the plate 40 through which the blade 30e of the upper piercing element 30 is received, and a plurality of fluid passages 40b, preferably arranged circumferentially and spatially separated from each other.

[0073] In various preferred embodiments, plate 40 is secured in place by means of element 30, which, as described above, can be fixed to the machine via press fit or interlocking. Incidentally, in other embodiments, plate 40 may be provided with at least one fixing hole, for example in Figure 30 The hole at the center position is indicated by 40c.

[0074] In various preferred embodiments, the number of passages 40b corresponds to the “initial” number of openings 30c in element 30, i.e., the number of openings 30c defined in wall 30b prior to the cutting and bending operations required to obtain blade 30e. Preferably, in any case, this arrangement ensures that each passage 40b is located at its corresponding opening 30c in the installed state. Also for this purpose, plate element 40 preferably includes corresponding mating elements for cooperating with corresponding mating elements of the upper piercing element 30 for proper positioning.

[0075] Referring to the example shown, the bottom wall 30b of element 30 defines at least one mating or positioning element, which in Figure 28 The details are indicated by 30b', which consists of a small boss 30b' protruding from the outside of the bottom wall 30b, obtained near the peripheral wall 30a. On the other hand, the plate 40 defines a recess 40d at a position corresponding to its outer contour, which is capable of receiving the aforementioned boss 30b' at least partially. In the assembled state, the two mating elements 30b' and 40d are joined together (obviously, the blade 30e passes through the corresponding slot 40a), with the plate 40 resting against the outside of the bottom wall 30b of the piercing element 30, and each passage 40b located at the corresponding through opening 30c.

[0076] In various preferred embodiments, and as such Figure 32 As shown in the details, each passage 40b is formed by a corresponding set of micro-openings 40b', each of which has a channel cross-section lower than that of the corresponding opening 30b of the piercing element 30. Furthermore, preferably, the sum of the channel cross-sections of the micro-openings 40b' of each passage 40b is also smaller than the channel cross-section of the corresponding opening 30c.

[0077] Figure 33 An example is given of a typical hot water supply unit of a beverage preparation machine (such as a bar machine). The unit, generally designated 50, has a body defining a peripheral wall 51, which has a radially inwardly projecting lower edge 52. Two inserts 53 are defined within the edge 52, each facing a ramp or cam 54 (only one visible) defined by the upper surface of the same edge 52. Within the area defined by the peripheral wall 51, there is a water distributor 55, which here has a generally frustoconical outer profile, a distribution wall generally in the form of a shower plate, and may, but not necessarily, be provided with a central threaded hole 57. According to techniques known per se, the distributor 55 is connected to a pressurized hot water source of the preparation machine.

[0078] For assembly purposes, the upper piercing element 30 with the associated plate 40 is fitted onto the dispenser 55, and the element is secured in place by press fit or interlocking: the assembled state is Figure 34 As shown in the diagram. For element 30 and plate 40, there are... Figure 25 Hole 30d and Figure 30 The hole 40c and the dispensing wall of the dispenser 55 have Figure 34 In the possible case of hole 57, a screw with a wide head (not shown) is inserted through the aforementioned holes 40c and 30d of plate 40 and element 30 and screwed into hole 57 of dispenser 55 in order to secure elements 30 and 40 in the proper position on dispenser.

[0079] In the use of the capsule holder 1 described above, the user places the capsule 20 inside the chamber 4c of the container body 4 and manually pushes it deep inside until the outlet wall 20b is pierced by the lower perforation device 15, as shown. Figure 24 As shown in the diagram (where capsule 20 is indicated by a shaded line). In this case, the lower side of the flange 20d of capsule 20 rests against or, in any case, faces the front sealing element 6 of the container body 4.

[0080] Subsequently, the operator used the checkpoint system to... Figure 1 The capsule holder 1 is connected to Figure 33The dispensing unit 50. To this end, the operator translates the capsule holder 1 axially upwards to insert the pin 2f into the insertion seat 53 of the unit 50. At this stage, the dispenser 55, equipped with a piercing element 30, slides into the upper portion of the tubular body 7 containing the receiving assembly 3 of the capsule 20, and the blade 30e of the element 30 pierces the inlet wall 20c of the capsule 20. Subsequently, the operator applies an angled movement to the capsule holder 1, causing the lower surface of the pin 2f to slide on the inclined surface 54 of the unit 50, thereby causing the capsule holder 1 to rise slightly further and secure it relative to the assembly 50. At this stage, even though the tip 15b of the lower piercing device 15 has pierced the outlet wall 20b of the capsule 20, the angled movement of the capsule holder 1 does not cause torsion on the capsule itself due to the possibility of rotation of the disc support 15a. During tightening, another annular element 8 of the receiving assembly 3 (configured here as a sealing element) can be slightly compressed in the axial direction, that is, it allows for a slight elastic adaptation of the container body 4 and its associated elements to the position relative to the tubular body 7 and the dispenser 55.

[0081] With the capsule holder 1 secured to the dispensing unit 50, the plate 40 presses against the inlet wall 20c of the capsule 20, and the lower surface of the capsule flange 20d presses against the front sealing element 6 of the container body 4 to ensure the necessary seal.

[0082] During subsequent dispensing, pressurized hot water from dispenser 55 passes through the opening 30c of the upper piercing element 30 and the corresponding passage 40b of plate 40; the sealing effect applied by the front sealing element 6 relative to the flange 20d of capsule 20 reduces the risk of any lateral leakage of water flow, which can then penetrate under pressure through the path defined between the blades 30e and the corresponding slots formed by these blades in the inlet wall 20c of capsule 20 into the capsule itself; in any case, any lateral leakage of water can be contained by the radial sealing element 5 of receiving assembly 3, and, if necessary, by another annular element 8, which is exemplified herein as an axial-radial sealing element. Thus, due to the various sealing devices provided, possible pressure loss due to possible water leakage is avoided or at least significantly reduced.

[0083] Then, hot water under pressure passes through capsule 20, contacts the precursor contained therein, and the resulting beverage can flow out through the channel 15b' of the tip 15b of the lower perforation device 15 and / or through the path defined between these tips 15b and the corresponding holes formed by them in the outlet wall 20b of the capsule. The beverage leaving capsule 20 then reaches the outlet conduit 4i-4h (directly through the passage 15b' of the tip 15b and / or, when supplied, through the channel 15c of the plate element 15a), and flows through the nozzle 11 of capsule holder 1. Figure 11-2 ), to reach the container below, such as a cup.

[0084] Figure 35 and Figure 36 A possible variant embodiment is shown, which is largely similar to the previous reference. Figure 3 and Figure 24 The described embodiments; in Figure 36 In the image, capsule 20 is shown schematically in cross-section.

[0085] exist Figures 35-36 In this embodiment, the other annular element 8 is not a sealing element made of elastomeric material, but is configured to be welded inside the tubular body 7, substantially located at the corresponding lower edge 7c. Element 8 can be a metallic material, such as steel. Furthermore, in this embodiment, the sleeve 9 has a radially projecting flange at its upper edge. Figure 36 It is represented by 9c.

[0086] In this configuration, taking into account the connection obtained by screwing the locking member 10 onto the sleeve 9, the presence of another welded annular element 8 allows for reinforcement of the structure of the tubular body 7 in its lower region, wherein the lower edge 7c of the tubular body 7 and the element 8 are thus secured between the flange 9c of the sleeve 9 and the locking member 10.

[0087] For the rest, the operation and assembly of the device are the same as described, except that, in this case, element 8 does not strictly perform the sealing function.

[0088] Based on the above description, the features and advantages of the present invention are clear.

[0089] It will be apparent to those skilled in the art that various modifications can be made to the capsule retainer device and kit described by way of example without departing from the scope of the invention as defined by the appended claims.

[0090] As previously stated, component 3 can be secured to support body 2 by means other than simple mechanical interference. For example, the lower portion 9b of sleeve 9 with a smaller diameter can be provided with external threads, and another locking member can be screwed onto these external threads. This lower portion 9b will have a larger diameter than the lower edge 2c of support body 2. Figure 3The receiving assembly 3 will have a smaller diameter, and the other locking member will have a larger outer diameter than the lower edge 2c of the support body 2. Therefore, in the assembled state of the assembly 3 on the support body 2, the lower portion 9b of the sleeve 9 will be configured to protrude below the lower edge 2c of the support body 2, and by fastening the other locking member on its threads, the receiving assembly 3 can be axially blocked as a whole inside the support body 2, the upper edge 7b of the tubular body 7 abuts against the upper edge 2b of the support body 2, and the other locking member axially abuts against the lower edge 2c of the support body 2.

[0091] The sealing element 6 can have different thicknesses or heights, particularly its portion 6a, to accommodate capsules 20 of varying heights within the chamber 4c of the body 4. These varying heights refer herein to the axial distance between walls 20b and 20c. Specifically, in the case of a taller capsule 20, a taller element 6 can be provided, or it can be thicker in its head portion 6a; conversely, in the case of a lower-height capsule 20, a lower-height element 6 can be used, or it can be thinner in its head portion 6a. Thus, the selection of the sealing element 6 allows for adjustment of the height of the accommodating space represented by the chamber 4c.

[0092] The possibility of providing sealing elements 6 with different heights also allows for adjustment of the distance between the tip 15b and the used capsule 20, thereby allowing for differentiation of pre-brewing time, i.e., extending or reducing the contact time between the extract and the beverage precursor contained in the capsule. For example, in the case of capsules containing soluble beverage precursors, it may be preferable that the tip 15b penetrates the bottom 20b of the capsule 20 to a reduced extent in order to slow the passage of water through the capsule itself and thus allow for complete dissolution of the precursor; on the other hand, in the case of capsules containing coffee powder, the tip 15b can penetrate the bottom 20b of the capsule 20 even more, since the necessary pre-brewing stage can be achieved in a relatively short time (averaging about 5 seconds), and the subsequent dispensing stage must be relatively rapid (averaging no more than about 25 seconds).

[0093] Therefore, in various embodiments, component 3 can be designed to be replaceable with sealing element 6 so that the component can be adjusted according to the type of capsule to be processed. On the other hand, in other embodiments, a kit comprising multiple receiving components 3 can be provided, which are replaceable relative to the same support body 2 and which differ from each other depending on the type of sealing element 6, or multiple capsule holder devices 1 can be envisioned, which differ from each other depending on the type of sealing element 6 equipped with the corresponding receiving component 3.

Claims

1. A capsule holder device for a beverage preparation machine, comprising an axially hollow annular support body (2) having a central axis (X1), the support body (2) having a peripheral wall (2a) and an upper edge (2b) and a lower edge (2c), the peripheral wall (2a) of the support body (2) having a lateral attachment (2d) for securing a handle (2e) and a coupling device (2f), adapted to be coupled to a hot water dispensing unit (50) of the beverage preparation machine at least after the support body (2) has been moved at an angle about the respective central axis (X1). in, A receiving component (3) is installed inside the supporting body (2), the receiving component having a corresponding central axis (X2) that substantially coincides with the central axis (X1) of the supporting body (2). The receiving component (3) includes a cup-shaped container body (4), which has a corresponding peripheral wall (4a). The cup-shaped container body (4) has a bottom (4b) that, together with the peripheral wall (4a), defines a chamber (4c) capable of receiving a capsule (20), and the bottom (4b) of the container body (4) has at least one outlet conduit (4h). A lower perforation device (15) is provided at the bottom (4b) of the container body (4), which is capable of perforating the outlet wall (20b) of the capsule (20) contained in the chamber (4c), and the lower perforation device (15) includes a plurality of tips (15b). The tip (15b) is supported by a disc-shaped support (15a) which is mounted in a rotatable manner within the cavity (4c) defined by the peripheral wall (4a) and the bottom (4b) of the cup-shaped container body (4) for rotating about the central axis (X2) of the receiving assembly (3).

2. The capsule retainer device according to claim 1, wherein, A rotating seat (4l) is defined within the chamber (4c), and the disc-shaped support (15a) is rotatably connected to the rotating seat, the rotating seat (4l) being defined at least partially by the inner peripheral surface of the chamber (4c).

3. The capsule retainer device according to claim 1 or claim 2, further comprising a restraint device (4k) configured to prevent undesirable displacement of the disc support (15a) in the axial direction within the receiving assembly (3).

4. The capsule retainer device according to claim 3, wherein, The constraint device (4k) includes circumferential ribs on the inner circumferential surface of the chamber (4c).

5. The capsule retainer device according to any one of claims 1-2, wherein: - The tip (15b) has at least one axial channel or surface groove, and / or the disc-shaped support (15a) has at least one through opening (15c), and - The bottom (4b) of the container body (4) defines a generally flared portion (4i) of the outlet conduit (4h) which extends below the disc-shaped support (15a).

6. The capsule retainer device according to any one of claims 1-2, wherein, The peripheral wall (4a) of the container body (4) has a radially outwardly projecting flange (4d) at the end opposite to the bottom (4b), the flange (4d) having a circumferential surface in which a seat (4e) for a first annular sealing element (5) is defined.

7. The capsule retainer device according to any one of claims 1-2, wherein, The peripheral wall (4a) of the container body (4) has a radially outwardly projecting flange (4d) at the end opposite to the bottom (4b), the flange (4d) having an upper surface in which a seat (4f) for a corresponding annular sealing element (6) is defined.

8. The capsule retainer device according to any one of claims 1-2, wherein, The receiving component (3) includes a tubular body (7) with a peripheral wall (7a), an outwardly projecting upper edge (7b) and an inwardly projecting lower edge (7c), the upper portion of the container body (4) being accommodated in the tubular body (7).

9. The capsule retainer device according to claim 8, in, The peripheral wall (4a) of the container body (4) has a radially outwardly projecting flange (4d) at the end opposite to the bottom (4b), the flange (4d) having a circumferential surface defining a seat (4e) for a first annular sealing element (5) in the circumferential surface, and The first annular sealing element (5) is operatively in contact with the inner surface of the peripheral wall (7a) of the tubular body (7).

10. The capsule retainer device according to claim 9, wherein, The receiving component (3) further includes a cylindrical sleeve (9) that at least partially surrounds the peripheral wall (4a) of the container body (4).

11. The capsule retainer device according to claim 10, wherein, Between the following: -The lower edge (7c) of the peripheral wall (7a) of the tubular body (7), and -The lower surface of one of the flange (4d) of the container body (4) and the radially outwardly projecting flange (9c) of the cylindrical sleeve (9), An additional annular element (8) is provided, and another annular element (8) is also provided between the inner surface of the peripheral wall (7a) of the tubular body (7) and the corresponding outer peripheral surface of the cylindrical sleeve (9).

12. The capsule retainer device according to claim 11, wherein, The cylindrical sleeve (9) has an upper external thread (9a') and a first locking member (10) can be screwed onto the upper external thread to push the lower edge (7c) of the tubular body (7) toward the lower surface of the flange (4d) of the container body (4) in the presence of an additional annular element (8).

13. The capsule retainer device according to any one of claims 1-2, wherein, The receiving component (3) is constrained into the supporting body (2) by mechanical interference.

14. A kit comprising at least one of the following: - The capsule retainer device (1) according to claim 7, and a plurality of the respective annular sealing elements (6) having different heights or thicknesses, which are replaceable relative to the corresponding seats (4f) defined in the upper surface of the flange (4d) of the container body (4); - The plurality of capsule retainer devices (1) according to claim 7 are different from each other by the height or thickness of the respective annular sealing elements (6); - The capsule retainer device (1) according to claim 7, and a plurality of the receiving components (3) which are replaceable relative to the same support body (2) and which are different from each other in height or thickness of the corresponding annular sealing element (6).

15. A kit for using capsules on a beverage preparation machine equipped with a hot water dispensing unit (50), the kit comprising a capsule retainer device (1) according to any one of claims 1-4, the capsule retainer device being configured for coupling with the hot water dispensing unit (50), the kit further comprising an upper perforated element (30) configured for mounting on the hot water dispensing unit (50), the upper perforated element (30) comprising a body having a corresponding peripheral wall (30a) and a bottom wall (30b), wherein, The peripheral wall (30a) is shaped to at least partially surround the corresponding portion (55) of the hot water distribution unit (50), and the bottom wall (30b) defines a plurality of through openings (30c) and a plurality of downwardly projecting tips or blades (30e).

16. The kit of claim 15, further comprising a micro-perforated plate (40) configured to be placed against the outside of the bottom wall (30b) of the upper perforated element (30), the micro-perforated plate (40) having: a plurality of slots (40a) through which downwardly projecting tips or blades (30e) of the upper perforated element (30) can be received; and a plurality of fluid passages (40b) spatially separated from each other and each formed by a corresponding set of micro-openings (40b').

17. The kit according to claim 15 or claim 16, wherein, The downwardly protruding tip or blade (30e) is defined by a corresponding folded portion of the bottom wall (30b) of the upper perforated element (30).

18. A beverage preparation machine comprising the kit according to any one of claims 14-17.

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