POWDER HOLDER FOR A BEVERAGE PREPARATION DEVICE

Description

[0001] The invention relates to a powder holder for detachable accommodation in a beverage preparation device according to the preamble of claim 1 and a beverage preparation device with a powder holder according to claim 22.

[0002] Powder holders for beverage preparation devices are known in the prior art. These brew beverages by placing a beverage substrate, for example, coffee powder, on a sieve or a powder holder base of the powder holder, which is connected and sealed to a brewing head of the beverage preparation device, forming a brewing chamber. The beverage is prepared by passing brewing fluid, preferably hot water, through the powder holder from the beverage preparation device or forcing it under pressure. To simplify cleaning the powder holder and removing used coffee powder, the powder holder can be removed from the machine.

[0003] From the application DE 10 2021 133 074 A1, beverage powder holders are known that allow the brewing chamber floor to be raised at or above the edge of the brewing chamber wall after removal, so that the used coffee powder can be easily and quickly removed from the brewing chamber. This is made possible by a guide rail, which is integrally connected to the brewing chamber wall forming the brewing chamber at the bottom. The brewing chamber floor is positively guided by point-based support, ensuring low friction. However, this design has the disadvantage that it requires additional displacement space at the bottom, and the powder holder is therefore very large.

[0004] Furthermore, from the application EP 2 087 818 A1 a powder holder is known which achieves a height adjustment of the sieve base by moving two edges designed in a wave shape and facing each other in order to halve the brewing chamber volume as desired. Due to the wave shape, the edges interlock to save space when the brewing chamber base is in the lowest position. Furthermore, a second, likewise wave-shaped guide edge is provided, by which the brewing chamber base can be lifted from the half position further over the edge of the brewing chamber to make it easier to remove coffee grounds. The step-by-step raising of the brewing chamber base by means of the second guides causes the displacement height to be reduced. The reduction results from the fact that the minimum displacement height is predetermined by the edge height of the individual guides, whereby the edge height is reduced by half thanks to the two-stage design with two guides.To ensure that the edges remain in contact during rotation in opposite directions, an axial restoring force is applied to the edges via a spring. However, the flat contact between the edges and the additional force of the spring create friction, making it difficult to rotate the powder holder.

[0005] From utility model DE 20 2009 000 075 U1, a removable brewing unit is known which is adjustable along a longitudinal axis. The drive is effected by means of a threaded spindle, which is received in a threaded sleeve fixed to the brewing unit. The adjustment is stabilized by at least one additional guide. DE 198 32 063 A1 discloses another example of a powder holder for detachable accommodation in a beverage preparation device, wherein the powder holder comprises a housing element, a brewing chamber wall, a guide element, and a brewing chamber base mounted for movement in an axial direction.

[0006] Furthermore, a brewing device for coffee pod machines is known from utility model DE 20 2004 018 223 U1, wherein the brewing device comprises an upper part and a lower part. The upper part is fixed relative to the lower part by means of a guide so that it can be adjusted vertically and axially, and together with the lower part, forms a brewing chamber. The upper part further has helical guide webs running in the circumferential and axial directions, which convert a circumferential rotational movement of an actuating part into the vertical adjustment of the upper part relative to the lower part. The lower part comprises a cassette that can be removed radially, which holds the coffee pod and forms the lower part of the brewing chamber.

[0007] There is therefore a great need for a powder holder that enables and facilitates the removal of a beverage substrate, while being both space-saving and smooth-running. The handling of the powder holder should nevertheless be as simple and intuitive as possible. The invention aims to provide such a powder holder while simultaneously overcoming the disadvantages found in the prior art.

[0008] This problem is solved in a surprisingly simple but effective manner by a powder holder according to the teaching of independent main claim 1.

[0009] According to the invention, a powder holder for detachable accommodation in a beverage preparation device, in particular a coffee or espresso machine, is proposed, wherein the powder holder comprises a housing element, a brewing chamber wall, a guide element and a brewing chamber base movably mounted in an axial direction, wherein the brewing chamber base is tightly fitted to the brewing chamber wall and is formed with sieve means for retaining a beverage substrate, in particular coffee powder, during a brewing process.

[0010] The powder holder is characterized in that the guide element is designed as a transmission sleeve and a first guide on the

[0011] Guide element is arranged, wherein the brewing chamber floor and the brewing chamber wall are guided in the first guide, and wherein the guide element and the first guide are designed such that a rotation of the housing element relative to the brewing chamber wall causes an axial adjustment of the guide element relative to the brewing chamber wall and an axial adjustment of the brewing chamber floor relative to the guide element, so that a two-stage, additive axial adjustment of the brewing chamber floor relative to the brewing chamber wall between an uppermost and a lowermost position takes place.

[0012] The powder holder serves to hold a beverage substrate through which hot brewing fluid, preferably hot water, is passed or pressed under pressure during a brewing process. The hot brewing fluid absorbs substances, in particular flavorings, from the beverage substrate during the brewing process, transforming the brewing fluid into a flavored beverage. So that the powder holder can hold the beverage substrate and the fluid during the brewing process, the powder holder comprises a brewing chamber formed by the brewing chamber wall and the brewing chamber floor. For this purpose, the brewing chamber wall is closed in the circumferential direction and open on both sides in the axial direction. The brewing chamber wall can preferably be designed with a recess by extrusion along a normal to a surface.The design of the surface and the recess is fundamentally arbitrary; preferably, the surface with the recess is a circular ring, and the brewing chamber wall is therefore preferably a hollow cylinder. The hot brewing fluid is introduced into the brewing chamber through the upper opening of the brewing chamber wall before and / or during the brewing process. This is generally done via a brewing head of the beverage preparation device, to which the powder holder for carrying out a brewing process or brewing procedure is releasably attached, preferably via a bayonet lock. The outer edge of the brewing chamber base is designed according to the shape of the recess, whereby the brewing chamber base can be placed sealingly against the brewing chamber wall. In other words, the outer edge of the brewing chamber base replicates the design of the inside of the brewing chamber wall. The brewing chamber base is therefore preferably designed as a disc.The brewing chamber wall and the brewing chamber floor together form the brewing chamber. The brewing chamber floor contains the sieve media, onto which the beverage substrate is placed within the brewing chamber. The sieve media is designed such that the hot brewing fluid, after passing through the beverage substrate in the brewing chamber during the brewing process, can exit the brewing chamber through the sieve media as an automated beverage. The sieve media retains the beverage substrate.

[0013] To ensure easy removal of the beverage substrate after the brewing process, the brewing chamber floor is mounted so that it can move in one axial direction. Adjustability is limited in both axial directions, with the limitation defining an uppermost and a lowermost position. When the brewing chamber floor is in the lowest position, the brewing chamber has a maximum volume. This lowest position of the brewing chamber floor is referred to as the "brewing position," as this is the position it is intended to occupy during the brewing process. When the brewing chamber floor is in the uppermost position in the axial direction, the brewing chamber floor is in the "ejection position." Advantageously, used beverage substrate in this position on the brewing chamber floor can be lifted above the upper edge of the brewing chamber wall and thus easily removed. Preferably, adjustment in the axial direction is limited by the dimensions of the brewing chamber wall.In other words, when the brewing chamber base is in the ejection position, the brewing chamber base is flush with the upper edge of the brewing chamber wall, and when the brewing chamber base is in the brewing position, the brewing chamber base is flush with the lower edge of the brewing chamber wall. Even more preferably, the brewing chamber base is spaced upwards from the lower edge of the brewing chamber wall and lies sealingly against the brewing chamber wall when the brewing chamber base is in the brewing position. This stabilizes the brewing chamber base in its position and compensates for possible manufacturing deviations. Furthermore, it is preferably conceivable that the brewing chamber base is spaced from the upper edge of the brewing chamber wall in the ejection position and is located above the brewing chamber in order to be flush with a conceivable cover element.

[0014] To enable the axial adjustability of the brewing chamber floor, the powder holder has a guide element. A first guide is arranged on the guide element. The guide element is designed to be axially adjustable both in relation to the brewing chamber wall and in relation to the brewing chamber floor. Both the axial adjustment of the guide element relative to the brewing chamber wall and the axial adjustment of the brewing chamber floor relative to the guide element are brought about by a rotation of the housing element relative to the brewing chamber wall and the brewing chamber floor. The two axial adjustments always run in the same direction relative to the brewing chamber wall, i.e. either upwards or downwards, resulting in an additive axial adjustment for the brewing chamber floor relative to the brewing chamber wall.In other words, when the housing element rotates in the axial direction, the guide element moves up or down with the brewing chamber floor in relation to the brewing chamber wall, and the brewing chamber floor also moves up or down in the axial direction with respect to the guide element at the same time, so that the brewing chamber floor undergoes both axial adjustments in relation to the brewing chamber wall. To make this possible, both the brewing chamber floor and the brewing chamber wall are guided in the first guide, and the guide element is designed as a transmission sleeve. The axial adjustments always take place simultaneously to enable particularly quick and smooth adjustment of the brewing chamber floor relative to the brewing chamber wall. By guiding the brewing chamber wall and the brewing chamber floor in the same guide, it is also possible to design them to encompass the entire system.This means that the axial adjustment of the guide element relative to the brewing chamber wall and the axial adjustment of the brewing chamber floor relative to the guide element are forced in both axial directions. Therefore, additional force, such as a spring, is eliminated, significantly reducing the friction in the first guide caused by displacement and allowing the powder holder to move smoothly. This effect is further enhanced by the fact that the encompassing, forced guide in both directions eliminates the need for flat support, which is preferentially designed as a point-like support.

[0015] The hollow design of the guide element as a sleeve allows the flavored beverage to flow out of the brewing chamber. A sleeve is defined as a hollow cylinder. The outer radius of the guide element is preferably smaller than the inner radius of the brewing chamber wall and the diameter of the brewing chamber floor. In this way, the guide element can be at least partially accommodated in the interior of the brewing chamber wall when the brewing chamber floor is in the uppermost position, thereby transmitting the axial adjustment to the brewing chamber floor.

[0016] The housing element at least partially encloses the brewing chamber floor, the transmission sleeve and the brewing chamber wall in the radial direction and is designed to be movable in the circumferential direction relative to the brewing chamber floor and / or the brewing chamber wall to enable rotation.

[0017] The removable removal of the filter holder is made possible by the fact that the powder holder is removable from the beverage preparation device. Removable means that the powder holder is designed in such a way that enables the non-destructive spatial separation of the filter holder from the beverage preparation device. In particular, it is possible to spatially separate the powder holder from the beverage preparation device without the aid of tools. One possible embodiment of the removable powder holder is a suspension element on the powder holder, wherein the suspension element can be inserted into a suitable rail of the beverage preparation device. The detachable receptacle makes it possible to remove the powder holder from the beverage preparation device after the brewing process, to directly dispose of the used beverage substrate, and to quickly and easily clean the powder holder.A further advantage is that a complex cleaning of the entire beverage preparation device from contamination by used beverage substrate collected in the beverage preparation device becomes unnecessary.

[0018] In principle, it is arbitrary which beverage substrate is used in the powder holder, the preferred beverage substrate is coffee powder.

[0019] The basic idea of ​​the invention is that the two-stage, additive axial adjustment of the brewing chamber floor relative to the brewing chamber wall allows the housing element to be designed more compactly overall. This is achieved by the fact that the guide element, the brewing chamber wall, and the brewing chamber floor can be pushed into and out of each other like a telescopic rod. The simultaneous guidance of the brewing chamber floor and the brewing chamber wall in a common first guide enables rotation-induced forced guidance in both axial directions, which ultimately reduces friction and leads to smooth adjustment.

[0020] The invention makes it possible to provide an easy-to-use powder holder that allows for quick and easy removal of beverage substrate from the brewing chamber. The powder holder is designed to be compact and space-saving.

[0021] Advantageous further developments of the invention, which can be implemented individually or in combination, are presented in the subclaims.

[0022] In a further embodiment of the powder holder, it is advantageous that the first guide is formed by a circumferentially closed, preferably crown-shaped first guide track, with alternately arranged first flanks inclined in the axial direction, so that a displacement of the guide element and the brewing chamber floor and of the guide element and the brewing chamber wall is possible simultaneously in the axial direction and in the circumferential direction;that a second guide is formed between the housing element and the guide element, wherein the second guide is formed such that a displacement of the housing element and the guide element in the axial direction is possible, that a third guide is formed between the brewing chamber floor and the brewing chamber wall, wherein the third guide is formed such that a displacement of the brewing chamber wall and the brewing chamber floor or a displacement of the guide element and the brewing chamber floor in the axial direction is possible, and / or that a fourth guide is formed between the housing element and the brewing chamber wall, wherein the fourth guide is formed such that the rotation of the housing element, in particular the rotation between the housing element and the brewing chamber wall, is possible in the circumferential direction.;

[0023] The preferred embodiment of the first guide ensures that the additive axial adjustment is particularly easily achieved by the brewing chamber base sliding up or down on one or more of the first flanks while, at the same time, the brewing chamber wall slides down or up on one or more other first flanks. This is made possible by a rotation of the guide element with respect to the brewing chamber wall and the brewing chamber base. In other words, the inclined first flanks translate the rotational movement of the guide element into opposing axial adjustments of the brewing chamber wall and the brewing chamber base on the axially inclined first flanks, which are encompassed by the first guide.The first flanks are designed to be inclined in the axial direction in that the individual first flank is generally aligned in the circumferential direction and then rotated in the axial direction. In other words, the first flanks follow a section of a helical shape in space. The greater the rotation of the first flanks in the axial direction, the steeper the first flanks are. For ease of use, it is preferred that the first guide enables the translation of the rotational movement of the guide element into the opposing axial adjustments of the brewing chamber floor and brewing chamber wall, regardless of the direction of rotation. Therefore, a first flank that is rotated in one direction is followed by a first flank that is rotated in the opposite direction, resulting in an alternating, crown-shaped arrangement of the first flanks.The first guide is preferably arranged on the outside of the guide element. To allow the user to rotate the powder holder comfortably and indefinitely, the first guide is designed to be closed in the circumferential direction.

[0024] The preferred design of the second guide means that the guide element in the housing element is only adjustable in the axial direction. This means that rotation of the housing element is also transmitted to the guide element. As a result, the inventive axial adjustment of the guide element relative to the brewing chamber wall is possible even when the brewing chamber wall and the housing element are axially fixed to one another. The axial fixing of the housing element and brewing chamber wall means that, with a closed design of the inside of the brewing chamber wall and the outside of the housing element, in conjunction with the brewing chamber base sealingly abutting the brewing chamber wall, none of the guides can be touched by the user of the powder holder.This protects both the user from pinching and the guides themselves from damage caused by the user or contamination, thus contributing to better durability.

[0025] The preferred embodiment of the third guide fixes the brewing chamber floor and brewing chamber wall to one another in the circumferential direction. This improves sealing and reduces friction between the brewing chamber floor and brewing chamber wall when the brewing chamber floor rests tightly against the brewing chamber wall according to the invention, because the relative movements of the brewing chamber wall and brewing chamber floor to one another are limited to the axial adjustment according to the invention. In other words, with the exception of the axial adjustment according to the invention, all other relative movements of the brewing chamber floor and brewing chamber wall that are unnecessary for the inventive concept are prevented by the third guide. A good seal between the brewing chamber floor and brewing chamber wall protects the interior from contamination, and low friction between the brewing chamber floor and brewing chamber wall enables smooth adjustment of the brewing chamber floor and brewing chamber wall to one another.

[0026] The preferred design of the fourth guide ensures axial fixation of the brewing chamber wall and the housing element. The axial fixation of the housing element and the brewing chamber wall ensures that, when the inside of the brewing chamber wall and the outside of the housing element are closed, in conjunction with the brewing chamber floor sealingly against the brewing chamber wall, none of the guides can be touched by the user of the powder holder. This protects both the user from pinching and the guides themselves from damage by the user or by contamination, thus contributing to improved durability. Nevertheless, the inventive rotation of the housing element is still possible.

[0027] In a preferred development of the first guide, the first guide is designed as a first rail adapted to the first guide track and at least four first support profiles adapted to the first rail, wherein the first rail is preferably arranged on the guide element and two of the four first support profiles are arranged on the brewing chamber floor and two of the four first support profiles are arranged on the brewing chamber wall. The arrangement of the first rail on the guide element and the arrangement of the first support profiles on the brewing chamber wall and brewing chamber floor enables the simultaneous guidance of the brewing chamber floor and the brewing chamber wall. The fact that two of the first support profiles are arranged on the brewing chamber wall and brewing chamber floor prevents tilting and wedging of the brewing chamber wall and brewing chamber floor, which is promoted by tilting. Safe guidance is ensured by the first support profiles adapted to the first rail.

[0028] It is advantageous for the first support profile to be a circular cylinder or an elliptical cylinder, in particular a right circular cylinder or a right elliptical cylinder. In principle, the design of the first support profile is arbitrary; however, a support profile that is a circular cylinder or an elliptical cylinder is easy to manufacture and has the advantage that tilting and / or wedging is unlikely, even in the first guide, even in the event of a change of direction caused by the first flanks. In addition, this minimizes the support surface and thus also the frictional resistance. A circular cylinder is a body with two congruent and parallel circles as base and top surfaces, which are connected by a lateral surface and are formed by extrusion of the circle along a straight line. If the centers of the circular surfaces of the cylinder lie perpendicular to one another, then the cylinder is a right circular cylinder.An elliptical cylinder has ellipses instead of circles. These ellipses are aligned in the same direction.

[0029] It is further advantageous if the first support profiles are offset by the angle assumed by the first flank. This allows for simultaneous sliding up or down on two or more first flanks. This leads to a symmetrical distribution of forces and therefore to particularly efficient and smooth guidance of the first support profiles in the first rail. This advantage is further enhanced if the first support profiles arranged on the brewing chamber wall and the first support profiles arranged on the brewing chamber floor are arranged alternately.

[0030] In an advantageous embodiment of the second guide, it is preferred that the second guide is designed as at least one second rail aligned in the axial direction and at least one second support profile adapted to the second rail, wherein the second rail is preferably formed on the guide element and the second support profile on the housing element. Particularly preferably, the second guide is designed as two second rails aligned in the axial direction and two second support profiles adapted to the second rails. As described elsewhere, the adaptation of support profiles to rails and the arrangement of several, in particular symmetrically distributed rails and support profiles, in this case the second rail and the second support profile, result in a very smooth running design which is particularly secure against wedging.

[0031] In an advantageous embodiment of the third guide, it is preferred that the third guide is designed as at least one third rail aligned in the axial direction and at least one third support profile adapted to the third rail, wherein the rail is preferably formed on the brewing chamber wall and the support profile on the brewing chamber floor. Particularly preferably, the third guide is designed as two third rails aligned in the axial direction and two third support profiles adapted to the third rails. As described elsewhere, the adaptation of support profiles to rails and the arrangement of several, in particular symmetrically distributed rails and support profiles, in this case the third rail and the third support profile, result in a very smooth running design which is particularly secure against wedging.

[0032] In an advantageous embodiment of the fourth guide, it is preferred that the fourth guide is formed by a groove-shaped fourth rail that is closed in the circumferential direction and with at least two fourth support profiles that are adapted to the fourth rail, wherein the fourth support profile is preferably arranged on the housing element and the fourth rail on the brewing chamber wall. The closure of the fourth rail in the circumferential direction enables the user to rotate the housing element completely in a circle, whereby there is no longer any incorrect or correct direction of rotation. This prevents incorrect operation of the powder holder by the user. As described elsewhere, the adaptation of support profiles to the rail and the arrangement of several, in particular symmetrically distributed support profiles, in this case the fourth rail and the fourth support profiles, results in a very smooth design that is particularly secure against jamming.In a further and preferred embodiment of the powder holder, the guide element comprises a first body forming the transmission sleeve and a second annular body, wherein the first guide and the second guide are arranged on the first body, wherein the third guide is designed such that the third guide guides the second body of the guide element in addition to the brewing chamber floor and the brewing chamber wall, and that a fifth guide is formed between the housing element and the second body, wherein the fifth guide is designed as a second circumferentially closed, preferably crown-shaped guide track, with alternately arranged second flanks inclined in the axial direction, so that a displacement of the second body and the housing element is possible simultaneously in the axial direction and in the circumferential direction.The design of the guide element with two bodies allows for the individual components of the powder holder to be pushed together more closely, like a telescopic rod. This further reduces the powder holder's installation space.

[0033] The second body makes it possible to design the support profiles of the brewing chamber floor shorter, since part of the third guide is raised together with the second body by the fifth guide. Alternatively, it is conceivable that the design of the guide element with the first body and the second body can bring about a third axial adjustment, which is also additive to the axial adjustments according to the invention. Since the total axial adjustment to be overcome is determined by the height of the brewing chamber wall, the individual axial adjustments can be smaller with a three-part division than with a two-part division, thereby reducing the overall installation space of the parts involved, including the brewing chamber floor.In both ways, the installation space of the housing element, which is located below the brewing chamber and which at least partially accommodates the brewing chamber floor and the guide element completely when the brewing chamber floor is in the lowest position, can be made more compact and flatter.

[0034] It is further preferred that at least two of the first and / or second flanks, preferably all first and / or second flanks, have the same gradient. In principle, the gradient of the individual first and / or second flanks is arbitrary; however, if at least two first and / or second flanks have the same gradient, the ratio of the angle of rotation of the rotational movement of the housing element to the axial adjustment of the brewing chamber base is identical when the brewing chamber base and / or the brewing chamber wall slide up or down on the first flanks or the second body slides up or down on the second flanks. Different gradients, on the other hand, allow the user to move the brewing chamber base in the axial direction at different speeds in relation to the angle of rotation.Preferably, all first flanks have an identical first pitch, and all second flanks have an identical second pitch, so that the relationship between the angle of rotation of the housing element and the movement of the brewing chamber base in the axial direction is fixed and independent of the direction of rotation and the position of the brewing chamber base. It is not absolutely necessary for the first and second pitches to be identical. This makes the behavior of the powder holder predictable for the user.

[0035] In a preferred development of the invention, it is conceivable that a plateau section is arranged between the first and / or second flanks, wherein the plateau section runs in the circumferential direction, in particular perpendicular to the axial direction. The arrangement of plateau sections between the first and / or second flanks has the effect that a rotation of the housing element over a short distance causes no or only a slight axial movement of the brewing chamber base. In this way, the powder holder has a small amount of play in the ejection position and the brewing position. The user then no longer has to wait for the exact right moment to adjust the ejection position and the brewing position of the powder holder, but the powder holder has a tolerance to rotation in the ejection position and the brewing position. This facilitates handling.

[0036] Furthermore, it is advantageous for the first guide of the powder holder to comprise two to ten first flanks and / or for the fifth guide of the powder holder to comprise two to ten second flanks. Particularly preferably, the first and / or fifth guide comprises an even number, preferably between 2 and 20, particularly preferably between 6 and 18, of first and second flanks, respectively. Most preferably, the number of first and second flanks is identical. It is obvious to a person skilled in the art that the first and fifth guides must have an even number of first and second flanks, respectively, in order to enable an alternating arrangement of the flanks and, at the same time, the closed design of the guides in the circumferential direction.The number of flanks determines the number of degrees by which the housing element must be rotated relative to the brewing chamber wall to transition from the brewing position to the ejection position or from the ejection position to the brewing position of the brewing chamber floor, provided that the slope of the flanks is the same for all flanks. For this purpose, the total circumference of 360° is divided by the number of flanks. For example, if the first guide comprises four first flanks with the same slope, a position change from the brewing position to the ejection position or from the ejection position to the brewing position is achieved after a 90° rotation of the housing element.

[0037] Furthermore, it is preferably conceivable for the powder holder to comprise a locking element and a locking contour, one of which is arranged on the housing element and one on the brewing chamber wall, and for the locking contour to be aligned and configured in the circumferential direction such that, in at least one predetermined position, preferably upon reaching the uppermost and lowermost positions of the brewing chamber base, the housing element locks against the brewing chamber wall. The locking mechanism stabilizes the brewing chamber base in the predetermined position. Further rotation of the housing element requires overcoming a small resistance, which releases the locking mechanism. This makes setting the predetermined position, preferably the ejection position and the brewing position, significantly easier.Removing used beverage substrates while the brewing chamber base is in the ejection position or filling new beverage substrates while the brewing chamber base is in the brewing position is simplified because accidental unscrewing of the powder holder from the ejection position or from the brewing position is prevented. A further preferred position for the predetermined position is a half position and / or an intermediate position in which the brewing chamber base is at half height and / or at an intermediate height between the uppermost and lowermost positions. In the half position and / or the intermediate position, it is possible, if desired, to produce only half and / or a partial amount of the usual beverage quantity. Furthermore, it is advantageously conceivable for the locking to occur in a plurality of preferred positions, each offset from one another by a small angle.The locking mechanism then serves as haptic feedback for the user of the powder holder.

[0038] In an advantageous development, it is conceivable for the brewing chamber wall to comprise at least one handle fixed immovably relative to the brewing chamber wall or at least one handle contour fixed immovably relative to the brewing chamber wall. By means of this handle or the handle contour, rotation of the housing element with respect to the brewing chamber wall and, consequently, the inventive displacement of the brewing chamber base in the axial direction is simplified. Furthermore, with the aid of the handle or the handle contour, the powder holder can be easily and quickly removed from the beverage preparation device or inserted into the beverage preparation device. Furthermore, locating the powder holder in the beverage preparation device is made easier for the user. The design of the handle is arbitrary; preferably, the handle is designed as a stem.The handle contour can be machined as a single piece from a part of the brewing chamber wall or be attached to the brewing chamber wall as a separate component. A particularly preferred design for a handle contour is a wing.

[0039] It is preferred that the brewing chamber wall and the housing element each have a regular, non-circular surface profile, wherein the brewing chamber wall surface profile and the housing element surface profile are arranged congruently at the uppermost and lowermost positions of the brewing chamber base. The brewing chamber wall surface profile and the housing element surface profile extend in a plane perpendicular to the axial direction of the powder holder. The congruent arrangement of the surface profiles provides the user with feedback that the uppermost position, the ejection position, and the lowermost position, the brewing position, represent a special position of the brewing chamber base. Furthermore, it is possible to design the structure into which the powder holder is placed in the beverage preparation device such that the powder holder can only be inserted into this structure when the surface profiles are arranged congruently.In other words, the powder holder can only be inserted into the beverage preparation device when the brewing chamber base is in the ejection position or the brewing position. This reduces the likelihood of incorrect operation of the beverage preparation device. Alternatively, it is advantageously conceivable for the congruent arrangement to only be present when the brewing chamber base is in the brewing position. In this way, incorrect operation in the form of inserting the powder holder in a position other than the brewing position is impossible if the structure for receiving the powder holder is designed accordingly. A regular surface profile is understood to be a figure that merges into itself upon rotation through a certain angle and is therefore rotationally symmetrical.In principle, a circle is also rotationally symmetrical, but the desired feedback is not possible with a circle because a circle merges into itself regardless of the degree of rotation and the surface profiles in this case would always be arranged congruently. The surface profiles are arranged congruently when prominent structures of the surface profiles are aligned with one another. For example, the brewing chamber wall surface profile and the housing element surface profile are designed as a regular polygon, with the corners of the regular polygon representing the prominent structures. The brewing chamber wall surface profile and the housing element surface profile are therefore arranged congruently when the corners of the polygons lie one above the other. Due to manufacturing and design reasons, deviations between the surface profiles can occur. The exact design of the surface profile is also fundamentally arbitrary.However, the angle of rotation by which the surface profile is to be rotated in order to merge into itself depends on the number of first flanks in the corresponding design. This is due to the relationship between the angle of rotation of the powder holder and the number of first flanks explained elsewhere. The angle of rotation results from dividing 360° by the number of first flanks if the congruent arrangement is to be achieved in the brewing position and the ejection position. If the congruent arrangement is only desired in the brewing position, the angle of rotation must then be doubled. Preferably, the brewing chamber wall surface profile and the housing element surface profile are a regular polygon, even more preferably a regular polygon with rounded corners, most preferably a square with rounded corners, which corresponds to a design of the first guide with four flanks.More preferably, the surface profile is a circle flattened at two opposite points. Such a circle can, for example, be formed by a circle intersected by two parallel chords lying opposite one another at the same distance from the circle center. If the first guide in this preferred embodiment also has four flanks and the brewing chamber wall surface profile and the housing element surface profile are arranged congruently when the brewing chamber base is in the brewing position, and the structure for receiving the powder holder in the beverage preparation device has rails spaced according to the distance between the chords, then insertion of the powder holder is only possible when the brewing chamber base is in the brewing position, and insertion in any other position is not possible.

[0040] In a further development, it is preferred that the guide element or the first body be two-part, wherein the first guide, preferably the first rail, is delimited in the axial direction on one side by a first part and on the other side by a second part, and the two parts are fixed to one another. The two-part design simplifies the manufacture and assembly of the powder holder. Furthermore, it is possible to disassemble the powder holder into its individual parts, for example, for repair, maintenance, and / or cleaning.

[0041] In another advantageous embodiment of the invention, it is further conceivable for the housing element to have an at least partially structured surface and / or exterior. The structuring facilitates gripping and / or holding the housing element and provides the housing element with additional stability. Preferably, the structured surface is closed in the circumferential direction and formed by spaced-apart rods extending in the axial direction.

[0042] Furthermore, it is desirable for the housing element to be constructed in two parts and / or as a hollow body. The hollow body is preferably formed by radially spacing a first wall from a second wall of the housing element, with the first wall forming the side facing the brewing chamber wall and the second wall forming the outer side. It has been recognized within the scope of the invention that a hollow body conducts heat poorly. Therefore, the heat of the hot brewing fluid, which is conducted through the brewing chamber during the brewing process, is not transferred, or only transferred to a small extent, to the outer side of the housing element, and the user is protected from burns and / or scalding. To further increase the protective effect, it is also conceivable for the hollow body to be filled with additional heat-insulating materials. The two-part design simplifies the manufacture and assembly of the housing element.It is also possible to disassemble the housing element into its individual parts for repair, maintenance and / or cleaning, for example.

[0043] In a further preferred development of the invention, it is conceivable for the guide element to be arranged axially below the brewing chamber floor. Within the scope of the invention, it has been recognized that arranging the guide element axially below the brewing chamber floor enables the brewing chamber floor to form a seal against the brewing chamber wall. At the same time, the brewing chamber wall can be kept free of guides in which beverage substrate can become trapped, thereby promoting the formation of germs. Furthermore, the guide element should be enclosed as completely as possible by the housing element, and the powder holder should have the most compact design possible with the greatest possible stability. Arranging the guide element axially below the brewing chamber floor therefore enables the brewing chamber wall to be designed smoothly while at the same time achieving the most compact design possible.

[0044] In another advantageous development of the invention, it is conceivable for the housing element to comprise a receiving shaft arranged above a bottom outlet opening for accommodating the brewing chamber wall, the brewing chamber floor, and the guide element. In this way, the brewing chamber wall, the brewing chamber floor, and the guide element can be integrated into the housing element and protected by it from damage, for example, caused by contact. The beverage fluid can exit the powder holder unhindered through the bottom outlet opening.

[0045] It is assumed that the definitions and descriptions of the above terms apply to all aspects described below in this description, unless otherwise stated.

[0046] According to the invention, a beverage preparation device comprising the powder holder according to the invention is further proposed.

[0047] Further details, features, and advantages of the invention will become apparent from the following description of the preferred embodiments in conjunction with the subclaims. The respective features can be implemented individually or in combination with one another. The invention is not limited to the embodiments. The embodiments are illustrated schematically in the figures. The same reference numerals in the individual figures denote identical or functionally identical elements, or elements that correspond to one another in terms of their function. In detail:

[0048] Fig. 1 is an exploded view of a first embodiment of a powder holder according to the invention, Fig. 2A to 2C is a sequence of movements which results when rotating the first embodiment of a powder holder according to the invention, and Fig. 3A to 3B is a sequence of movements which results when rotating a second embodiment of a powder holder according to the invention.

[0049] Fig. 1 shows an exploded view of a powder holder 1 according to the invention. The powder holder 1 comprises a housing element 2, a brewing chamber wall 3, a brewing chamber base 4 adjustable in the axial direction and a guide element 5.

[0050] The housing element 2 is constructed in three parts, with two parts forming the inner side and the third part being placed over the inner side to form the outer side. This creates a cavity between the inner and outer sides of the housing element 2, making the housing element 2 a hollow body. The cavity acts as an insulator, so that only a small amount of heat from the brewing fluid penetrates from the inner wall of the brewing chamber wall 3 through the housing element 2 to the outer side of the housing element 3.

[0051] The brewing chamber wall 3 forms a hollow cylinder and is smooth. The brewing chamber wall 3 is arranged on the inside of the housing element 2.

[0052] The brewing chamber base 4 is also arranged within the housing element 2 and at least partially within the brewing chamber wall 3. The brewing chamber base 4 has a sieve on its upper side. The brewing chamber wall 3 and the brewing chamber base 4 form a brewing chamber into which the beverage substrate is placed.

[0053] The guide element 5 is arranged below the sieve means of the brewing chamber base 4. The guide element 5 is designed as a sleeve and serves to translate axial adjustments of the brewing chamber base 4 relative to the brewing chamber wall 3. To enable this translation, a first guide 10 is formed between the guide element 5 and the brewing chamber wall 3 as well as between the guide element 5 and the brewing chamber base 4. The first guide 10 comprises a first rail 11 arranged on the outside of the guide element 5, which rail has four first flanks. Fig. 1 Two of the four first flanks are clearly visible. In the first rail 11, two Fig. 1 not shown first support profiles 12, which are arranged on the brewing chamber wall 3 and the brewing chamber floor 4.

[0054] In order for the brewing chamber wall 3 and the brewing chamber floor 4 to slide along the first flanks of the first guide 10 in the first embodiment, it is necessary to enable the transmission of a rotation of the housing element 2 to the guide element 5. At the same time, to enable the transmission, the guide element 5 must be adjustable in the axial direction relative to the housing element 2 and, as explained later, also relative to the brewing chamber wall 3 and the brewing chamber floor 4. This is made possible by a second guide 20. The second guide 20 has two second rails aligned in the axial direction, which are arranged on the guide element 5. Two support profiles arranged on the housing element 2 are guided in the second rails, which support profiles are arranged in Fig. 1 are not recognizable.

[0055] In order to allow the brewing chamber base 4 to be axially adjustable relative to the brewing chamber wall 3, a third guide 30 is provided between the brewing chamber wall 3 and the brewing chamber base 4. The third guide 30 comprises two axially aligned third rails 31 which are arranged on the underside of the brewing chamber wall 3, wherein Fig. 1 only one of the two third rails 31 is visible. The brewing chamber floor 4 has two third support profiles 32 of the third guide 30 adapted to the short third rails 31. The third support profiles 32 are elongated and arranged below the sieve means in order to be guided in the short third rail 31.

[0056] In order to enable rotation of the housing element 2 in relation to the brewing chamber wall 3, a fourth guide 40 is arranged between the housing element 3 and the brewing chamber wall 4. The fourth guide 40 comprises a circumferentially closed fourth rail, which is arranged on the outside of the brewing chamber wall 3 and in which two, in Fig. 1 fourth support profiles (not shown). The support profiles are arranged on the inside of the housing element 2.

[0057] Fig. 2A bis 2B show a sequence of movements which occurs when twisting the Fig. 1 shown first embodiment of a powder holder 1 according to the invention. Fig. 2A shows the first embodiment of the powder holder 1 without the brewing chamber base 4. This clearly shows one of the two third rails 31 of the third guide 30 on the inside of the brewing chamber wall 3. The brewing chamber wall 3 is fixed relative to the housing element 2 by the fourth guide 40. One of the two fourth support profiles arranged on the housing element 2 is in the fourth rail arranged on the brewing chamber wall 3 to form the fourth guide 40. Fig. 2A shown. The guide element 5 has the first rail 11 of the first guide 10, wherein the first support profiles 12 are guided in the first rail 11.

[0058] The Fig. 2B shows the same situation as the Fig. 2A , wherein the brewing chamber base 4 has been inserted into the powder holder 1. The brewing chamber base 4 has the third support profiles 32 of the third guide 30, which extend on the underside of the brewing chamber base 4. On the third support profiles 32, two further first support profiles 12 belonging to the first guide 10 are arranged, which are covered by the third support profiles 32. Therefore, the first support profile 12, which is on the in Fig. 2B visible third support profile 32 of the brewing chamber floor 4, indicated by a dotted line. The first support profiles 12 arranged on the brewing chamber wall 3 and the first support profiles 12 arranged on the brewing chamber floor 4 are each offset and arranged alternately by the angle assumed by one of the first flanks of the first guide 10. In the first embodiment, this angle corresponds to 90°. In Fig. 2B The brewing chamber floor 4 is in its lowest position, also known as the brewing position. It is clearly visible that a space opens between the brewing chamber wall 2 and the brewing chamber floor 3, forming the brewing chamber.

[0059] In Fig. 2C the housing element 2 is 90° relative to the brewing chamber wall 2 and the brewing chamber floor 3 made of Fig. 2B been rotated. It is clearly visible that the guide element 5 has been raised by an axial adjustment 8 relative to the brewing chamber wall 2. The axial adjustment 8 was caused by the first support profiles 12 arranged on the brewing chamber wall 2 sliding down the first flanks and are now located at the low points of the first guide 10. This happened because the rotation of the housing element 2 was transferred to the guide element 5 via the second guide 20 and the guide element 5 has therefore also rotated by 90° relative to the brewing chamber wall 3. At the same time, the brewing chamber floor 4 has also been raised relative to the guide element 5 by the axial adjustment 8.This is due to the fact that the first support profiles 12 arranged on the brewing chamber floor 4 have slid up the first flanks of the first rail 11, which is also due to the rotation of the guide element 5 together with the housing element 2. The third guide 30 holds the brewing chamber floor 4 and the brewing chamber wall 3 relative to one another in the circumferential direction. Both axial adjustments 8, both that of the guide element 5 with respect to the brewing chamber wall 3 and that of the brewing chamber floor 4 relative to the guide element 5, occur in the same direction and therefore have an additive effect. The brewing chamber floor 4 is therefore raised to an uppermost position, which is the ejection position. In this position of the brewing chamber floor 4, used beverage substrate can be easily and completely removed, since the brewing chamber floor 4 is flush with the brewing chamber wall 2.

[0060] The Fig. 3A bis 3B show a sequence of movements which results when a second embodiment of a powder holder 1 according to the invention is rotated. The powder holder 1 likewise comprises a housing element 2, a brewing chamber wall 3, a brewing chamber base 4 and a guide element 5. As in the first embodiment, the brewing chamber wall 2 and the brewing chamber base 3 form a brewing chamber. The guide element 5 comprises a first body 6, wherein the first body 6 is designed as a transmission sleeve. In addition, the guide element 6 comprises a second body 7 designed as a ring. The second body 7 is arranged in the circumferential direction around the first body 6, wherein it is spaced apart from the latter. A first rail 11 of a first guide 10 is formed on the first body 6, wherein two first support profiles 12 arranged on the brewing chamber wall 3 and on the brewing chamber base 4 are guided in the first rail 10.The first guide 10 of the second embodiment is similar in design and function to the first guide 10 of the first embodiment (. Fig.1 and Fig. 2A bis 2C ) is identical. A second guide 20 is arranged between the first body 6 and the housing element 2 such that a rotation of the housing element 2 relative to the brewing chamber wall 2 and the brewing chamber floor 3 is transmitted to the first body 6. However, the first body 6 can be adjusted in the axial direction relative to the housing element 2.

[0061] Furthermore, a third guide 30 is formed between the brewing chamber wall 2, the brewing chamber floor 3, and the second body 7. The third guide 30 fixes the brewing chamber wall 3, the brewing chamber floor 4, and the second body 7 relative to one another in the circumferential direction. However, displacement of the brewing chamber wall 3, the brewing chamber floor 4, and the second body 7 relative to one another in the axial direction is still possible. The brewing chamber floor 4 is guided by means of two elongated third support profiles 32 within two transmission profiles 33 configured both as a rail and as a support profile, which are arranged on the second body 7. The transmission profiles 33 themselves are guided in a third rail 31 arranged on the brewing chamber wall 3.In direct comparison, the third support profiles 32 in the second embodiment are shorter than in the first embodiment, whereby the powder holder 1 of the second embodiment can be designed flatter overall.

[0062] To enable the rotation of the housing element 2 relative to the brewing chamber wall 3, a connection piece similar to the first embodiment ( Fig.1 and Fig. 2A bis 2C ) identically designed fourth guide 40 is arranged. A fifth guide 50 is arranged between the second body 7 and the housing element 2. The fifth guide 50 comprises a fifth rail with second flanks designed in the manner of the first guide 10, which second flanks are arranged on the housing element 2. Fifth support profiles of the fifth guide 50, arranged on the second body 7, are guided in the fifth rail. If the fifth support profiles slide up or down the second flanks as a result of a rotation of the housing element 2 relative to the second body 7, the second body 7 is adjusted in the axial direction relative to the housing element 2.

[0063] In Fig. 3A The brewing chamber floor 4 is in the lowest position. If the housing element 2 is now rotated by 90° relative to the brewing chamber wall 3, the rotation is simultaneously transferred to the first body 6 via the second guide 20. At the same time, the first body 6 and the brewing chamber floor 4 are fixed in the circumferential direction with the brewing chamber wall 3 by the third guide 30. This means that the first body 6 is also rotated relative to the brewing chamber wall 3 and the brewing chamber floor 4. Therefore, the first support profiles 12 slide along the flanks of the first rail 11. The brewing chamber wall 3 is fixed in the axial direction relative to the housing element 2 by the fourth guide 40; therefore, the first body 6 undergoes an upward axial adjustment relative to the brewing chamber wall 3 via the sliding of the first support profiles 12 on the first flanks.At the same time, the brewing chamber base 4 also undergoes an upward axial adjustment relative to the first body 6, since the first support profiles 12 arranged on the brewing chamber base 4 also slide along the first flanks. The two axial adjustments are additive, so that the brewing chamber base 4 is raised to the uppermost position, which is shown in . Fig. 3B However, it is shown in Fig. 3B It can also be seen that, due to the shortened design of the third support profiles 32, these would jump out of the rails of the transmission profile 33 arranged on the second body 7 if the second body 7 did not also undergo an axial adjustment. The axial adjustment of the second body 7 is caused by the rotation of the second body 7 relative to the housing element, which is transmitted to the second body 7 via the third guide 30. The fifth support profiles arranged on the second body 7 slide along the second flanks of the fifth rail, thus causing the necessary axial adjustment of the second body 7. Bezugszeichenliste

[0064] 1Powder holder 2Housing element 3Brewing chamber wall 4Brewing chamber floor 5Guide element 6First body 7Second body 8Axial adjustment 10First guide 11First rail 12First support profile 20Second guide 30Third guide 31Third rail 32Third support profile 33Transmission profile 40Fourth guide 50Fifth guide

Claims

1. A powder holder (1) to be removably received in a beverage preparation device, in particular a coffee or espresso maker, wherein the powder holder (1) comprises a housing element (2), a brewing chamber wall (3), a guide element (5) and a brewing chamber bottom (4) movably mounted in the axial direction, wherein the brewing chamber bottom (4) is in sealing contact with the brewing chamber wall (3) and is formed with filter means for retaining a beverage substrate, in particular ground coffee, during a brewing process, characterized in that the guide element (5) is formed as a conversion sleeve and a first guide (10) is arranged on the guide element (5), wherein the brewing chamber bottom (4) and the brewing chamber wall (3) are guided in the first guide and wherein the guide element (5) and the first guide (10) are designed such that a rotation of the housing element (2) in relation to the brewing chamber wall (3) causes axial displacement (8) of the guide element (5) in relation to the brewing chamber wall (3) and axial displacement (8) of the brewing chamber bottom (4) in relation to the guide element (5), so that two-stage additive axial displacement (8) of the brewing chamber bottom (4) in relation to the brewing chamber wall (3) takes place between a top position and a bottom position.

2. The powder holder according to claim 1, characterized in that the first guide (10) is formed by a first guide track that is closed in the circumferential direction and preferably crown-shaped, with alternately arranged first flanks inclined in the axial direction, so that displacement of the guide element (5) and the brewing chamber bottom (4) and of the guide element (5) and the brewing chamber wall (3) is allowed simultaneously in the axial direction and in the circumferential direction; a second guide (20) is formed between the housing element (2) and the guide element (5), wherein the second guide (20) is formed to allow displacement of the housing element (2) and the guide element (5) in the axial direction, a third guide (30) is formed between the brewing chamber bottom (4) and the brewing chamber wall (3), wherein the third guide (30) is formed to allow displacement of the brewing chamber wall (3) and the brewing chamber bottom (4) or displacement of the guide element (5) and the brewing chamber bottom (4) in the axial direction and / or a fourth guide (40) is formed between the housing element (2) and the brewing chamber wall (3), wherein the fourth guide (40) is formed to allow the rotation of the housing element (2), in particular the rotation between the housing element (2) and the brewing chamber wall (3), in the circumferential direction.

3. The powder holder according to claim 2, characterized in that the first guide (10) is formed as a first rail (11) adapted to the first guide track and at least four first support profiles (12) adapted to the first rail (11), wherein preferably the first rail (11) is arranged on the guide element (5) and two of the four first support profiles (12) are each arranged on the brewing chamber bottom (4) and two of the four first support profiles (12) are each arranged on the brewing chamber wall (3).

4. The powder holder according to claim 3, characterized in that the first support profile (12) is a circular cylinder or an elliptical cylinder.

5. The powder holder according to claims 3 or 4, characterized in that the first support profiles (12) are arranged such that they are offset by the angle of one flank.

6. The powder holder according to any one of claims 2 to 5, characterized in that the second guide (20) is designed as at least one second rail oriented in the axial direction and at least one second support profile adapted to the second rail, wherein preferably the second rail is formed on the guide element (5) and the second support profile is formed on the housing element (2).

7. The powder holder according to any one of claims 2 to 6, characterized in that the third guide (30) is designed as at least one third rail (31) oriented in the axial direction and at least one third support profile (32) adapted to the third rail (31), wherein preferably the third rail (31) is formed on the brewing chamber wall (3) and the third support profile (32) is formed on the brewing chamber bottom (4).

8. The powder holder according to any one of claims 2 to 7, characterized in that the fourth guide (40) is formed by a groove-shaped fourth rail that is closed in the circumferential direction and with at least two fourth support profiles adapted to the fourth rail, wherein preferably the fourth support profiles are arranged on the housing element (2) and the fourth rail is arranged on the brewing chamber wall (3).

9. The powder holder according to any one of preceding claims 2 to 8, characterized in that the guide element (5) comprises a first body (6) forming the conversion sleeve and a second annular body (7), wherein the first guide (10) and the second guide (20) are arranged on the first body (6), wherein the third guide (30) is designed in such a way that the third guide (30) guides the second body (7) of the guide element (5) in addition to the brewing chamber bottom (4) and the brewing chamber wall (3) and a fifth guide (50) is formed between the housing element (2) and the second body (7), wherein the fifth guide (50) is formed as a second preferably crown-shaped guide track that is closed in the circumferential direction, with alternately arranged second flanks inclined in the axial direction, to allow displacement of the second body (7) and housing element (2) simultaneously in the axial direction and in the circumferential direction.

10. The powder holder according to any one of claims 2 to 9, characterized in that at least two of the first and / or second flanks, preferably all of the first and / or second flanks, have the same pitch.

11. The powder holder according to any one of claims 2 to 10, characterized in that a plateau section is arranged between the first and / or second flanks, wherein the plateau section extends in the circumferential direction, in particular perpendicular to the axial direction.

12. The powder holder according to any one of preceding claims 2 to 11, characterized in that the first guide (10) and / or the fifth guide (50) comprise(s) two to ten flanks.

13. The powder holder according to any one of the preceding claims, characterized by a locking element and a locking contour, one of which is arranged on the housing element (2) and one on the brewing chamber wall (3) and the locking contour is oriented and formed in the circumferential order such that the housing element (2) locks in relation in relation to the brewing chamber wall (3) in at least one specified position, preferably when the top and bottom positions of the brewing chamber bottom (4) are reached.

14. The powder holder according to any one of the preceding claims, characterized in that the brewing chamber wall (3) comprises at least one handle fixedly secured to be immovable in relation to the brewing chamber wall (3) or at least one handle contour fixedly secured to be immovable in relation to the brewing chamber wall (3).

15. The powder holder according to any one of the preceding claims, characterized in that the brewing chamber wall (3) and the housing element (2) each have a regular, non-circular surface profile, wherein the brewing-chamber-wall surface profile and the housing-element surface profile are congruent in the top and bottom positions of the brewing chamber bottom (4).

16. The powder holder according to claim 15, characterized in that the surface profile is a rounded square or a circle flattened at two opposite points.

17. The powder holder according to any one of the preceding claims, characterized in that the guide element (5) or the first body (6) has two parts, wherein the first guide (10), preferably the first rail (11), is bounded in the axial direction by a first part on one side and by a second part on the other side and the two parts are fixedly secured in relation to each other.

18. The powder holder according to any one of the preceding claims, characterized in that the housing element (2) has an at least partially structured surface and / or outside.

19. The powder holder according to any one of the preceding claims, characterized in that the housing element (2) is formed with multiple parts and / or as a hollow body20. The powder holder according to any one of the preceding claims, characterized in that the guide element (5) is arranged below the brewing chamber bottom (4) in the axial direction.

21. The powder holder according to any one of the preceding claims, characterized in that the housing element (2) comprises a receiving shaft that is arranged above an outlet opening at the bottom end and serves to receive the brewing chamber wall (3), the brewing chamber bottom (4) and the guide element (5).

22. A beverage preparation device comprising a powder holder (1) according to any one of claims 1 to 21.