Brewing device and beverage machine

Abstract

The brewing device comprises a support assembly, a transmission mechanism arranged on the support assembly, a brewing cylinder connected to the transmission mechanism, the transmission mechanism being capable of driving the brewing cylinder to rotate, the brewing cylinder having a brewing chamber comprising a filling opening, a brewing piston connected to the transmission mechanism, the transmission mechanism being capable of driving the brewing piston to move so that the brewing piston closes the brewing chamber from the filling opening, and a slag pushing piston engaged with the brewing cylinder, the slag pushing piston being capable of moving relative to the brewing cylinder, wherein the brewing cylinder is capable of rotating between a first position and a second position, in the first position, the brewing chamber corresponds to the brewing piston in the axial direction of the brewing piston, and in the second position, the brewing chamber is misaligned with the brewing piston in the axial direction of the brewing piston, and in the process of rotating the brewing cylinder between the second position and the first position, the transmission mechanism drives the brewing piston to move in the axial direction of the brewing piston. The rotation of the brewing cylinder and the movement of the brewing piston are simultaneously controlled by a set of transmission mechanisms, the brewing efficiency is high, and the structure is compact.

Description

Technical Field

[0001] This invention relates to the field of beverage preparation technology, and in particular to a brewing device and a beverage machine. Background Technology

[0002] In the current beverage machine technology field, automatic brewing devices are widely used in homes and commercial establishments. These devices, through program control, can complete a series of processes from grinding beverage ingredients to heating water to brew beverage particles, allowing users to easily enjoy high-quality beverages. These brewing devices typically consist of a brewing tank with a brewing chamber, a brewing head, and a lower piston, thereby achieving effective extraction of beverage particles.

[0003] However, in related technologies, the brewing cylinder is raised and lowered by controlling the rotation of a screw, and the brewing head is fixedly connected to the upper end of the frame. The beverage brewing process includes a stage where the brewing cylinder receives powder or scrapes off residue, as well as a stage where the powder is pressed and brewed. The powder receiving or scraping stage and the pressing and brewing stage are performed sequentially, which results in a longer brewing time and lower efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a brewing device that is highly efficient and compact in structure.

[0005] Another object of the present invention is to provide a beverage machine that is highly efficient and compact in structure.

[0006] To achieve one of the above-mentioned objectives, the present invention provides a brewing device, comprising:

[0007] Support assembly;

[0008] A transmission mechanism is provided on the bracket assembly;

[0009] A brewing cylinder is connected to the transmission mechanism, which can drive the brewing cylinder to rotate. The brewing cylinder has a brewing chamber, which includes a filling opening for filling powder.

[0010] A brewing piston is connected to the transmission mechanism, which can drive the brewing piston to move so that the brewing piston closes the brewing chamber from the filling opening.

[0011] A slag-pushing piston is engaged with the brewing cylinder, and the slag-pushing piston and the brewing cylinder are movable relative to each other;

[0012] The brewing cylinder is rotatable between a first position and a second position. In the first position, the brewing chamber corresponds to the brewing piston along the axial direction of the brewing piston. In the second position, the brewing chamber is offset from the brewing piston along the axial direction of the brewing piston. During the rotation of the brewing cylinder between the second position and the first position, the transmission mechanism drives the brewing piston to move along the axial direction of the brewing piston.

[0013] Compared with existing technologies, the advantages of this invention are as follows: By simultaneously controlling the rotation of the brewing cylinder between the first and second positions and the movement of the brewing piston through a single transmission mechanism, the time spent on step-by-step operations is reduced, thereby improving the efficiency of beverage preparation. Furthermore, the rotation angle of the brewing cylinder and the movement distance of the piston can be controlled more precisely, ensuring repeatability and consistency in each operation. In addition, the number of components in the brewing device can be reduced, such as the number of transmission mechanisms, optimizing the internal space layout of the machine, reducing the space required for the entire device, making the machine more compact, and also reducing production costs to a certain extent.

[0014] As a further improvement of one embodiment of the present invention, the transmission mechanism includes a motor and an intermediate transmission member driven by the motor. The brewing cylinder and the brewing piston are respectively connected to the intermediate transmission member for transmission. The intermediate transmission member is configured to simultaneously drive the brewing cylinder and the brewing piston to move.

[0015] As a further improvement of one embodiment of the present invention, the intermediate transmission component is constructed as a vertically arranged threaded spindle, the motor drives the threaded spindle to rotate, the brewing piston is drivenly connected to the threaded spindle, and the brewing piston is limited to move along the axial direction of the threaded spindle; the threaded spindle is drivenly connected to the brewing cylinder to drive the brewing cylinder to rotate.

[0016] As a further improvement of one embodiment of the present invention, the threaded spindle includes a first threaded segment and a second threaded segment arranged sequentially along the axial direction of the threaded spindle, the brewing piston is drivenly connected to the first threaded segment, and the brewing cylinder is drivenly connected to the second threaded segment; the threads of the first threaded segment and the second threaded segment have opposite directions.

[0017] As a further improvement of one embodiment of the present invention, the movement of the intermediate transmission member, the brewing cylinder, and the brewing piston satisfies at least one of the following characteristics:

[0018] During the process of the intermediate transmission component driving the brewing cylinder to rotate from the second position to the first position, the intermediate transmission component drives the brewing piston to move toward the brewing cylinder along the axial direction of the brewing piston.

[0019] During the process of the intermediate transmission component driving the brewing cylinder to rotate from the first position to the second position, the intermediate transmission component drives the brewing piston to move away from the brewing cylinder along the axial direction of the brewing piston.

[0020] As a further improvement of one embodiment of the present invention, the intermediate transmission member is configured to rotate around a first axis, the first axis being vertically arranged, and during the process of the brewing cylinder rotating from the second position to the first position, the rotation direction of the intermediate transmission member is the same as the rotation direction of the brewing cylinder.

[0021] As a further improvement of one embodiment of the present invention, the intermediate transmission member is configured to rotate around a first axis, the first axis being vertically arranged. The intermediate transmission member includes a first guide portion and a second guide portion arranged sequentially along the axial direction of the intermediate transmission member. The brewing piston is drivenly connected to the first guide portion, and the brewing cylinder is drivenly connected to the second guide portion. The first guide portion and the second guide portion have opposite guiding directions, and the brewing piston and the brewing cylinder can move towards each other or away from each other under the drive of the intermediate transmission member.

[0022] As a further improvement to one embodiment of the present invention, the threaded spindle is configured in one of the following ways:

[0023] The first thread segment and the second thread segment have the same thread lead and the first thread segment and the second thread segment have the same thread engagement length.

[0024] The thread lead of the first thread segment is greater than the thread lead of the second thread segment, and the thread engagement length of the first thread segment is less than the thread engagement length of the second thread segment.

[0025] The thread lead of the first thread segment is less than the thread lead of the second thread segment, and the thread engagement length of the first thread segment is greater than the thread engagement length of the second thread segment.

[0026] The first threaded segment and the second threaded segment are configured to drive the brewing cylinder and the brewing piston to move towards or away from each other along the first axis at equal speeds.

[0027] The first threaded segment and the second threaded segment are configured such that the path lengths for driving the brewing cylinder and the brewing piston to move toward or away from each other along the first axis are equal.

[0028] As a further improvement of one embodiment of the present invention, the intermediate transmission component is constructed as a shaft cylinder, and the first guide portion and the second guide portion are disposed on the outer peripheral surface of the shaft cylinder.

[0029] As a further improvement of one embodiment of the present invention, a limiting member is also included, the limiting member comprising a pivot portion and a cantilever, the pivot portion being rotatably connected to the support assembly, and the cantilever using the pivot portion as a swing fulcrum; an elastic element is provided between the cantilever and the support assembly, during the process of the brewing cylinder rotating from the second position to the first position, the slag-pushing piston presses against the cantilever to deform the elastic element; the brewing cylinder and the brewing piston move towards each other, the slag-pushing piston separates from the cantilever to allow the cantilever to reset under the restoring force of the elastic element; the brewing cylinder and the brewing piston move away from each other, the cantilever abuts against the slag-pushing piston along the axial direction of the pivot portion, and the slag-pushing piston moves to a position flush with the filling opening under the pressure of the cantilever.

[0030] As a further improvement of one embodiment of the present invention, the brewing device satisfies at least one of the following features:

[0031] The brewing device further includes a powder channel disposed on the support assembly, the brewing cylinder is in the second position, and a portion of the powder channel extends into the brewing chamber;

[0032] The brewing cylinder also has a scraping position where the brewing chamber and the brewing piston are offset along the axial position of the brewing piston. The brewing cylinder moves to the scraping position to perform a scraping action. The scraping position is located between the first position and the second position, or the scraping position is the same as the second position.

[0033] As a further improvement of one embodiment of the present invention, a scraper is also included, which is disposed above the brewing cylinder. The scraper is connected to the brewing cylinder by a retaining element. The brewing chamber and the brewing piston are axially aligned with the brewing cylinder. The scraper is held in contact with the upper edge of the brewing cylinder by the retaining element. During the process of the brewing cylinder rotating from the first position to the scraping position, the scraper sweeps across the upper edge of the brewing cylinder in a horizontal direction.

[0034] The present invention also provides a beverage machine, including a brewing device as described in any of the above embodiments, the beverage machine further including a grinding device and a beverage outlet, the grinding device being used to provide the powder to be conveyed to the brewing chamber, the brewing piston being provided with a liquid outlet pipe communicating with the brewing chamber, the liquid outlet pipe being connected to the beverage outlet. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a brewing device according to an embodiment of the present invention, wherein the brewing cylinder is in the first position.

[0036] Figure 2 yes Figure 1A three-dimensional schematic diagram of the brewing device.

[0037] Figure 3 yes Figure 2 A three-dimensional schematic diagram showing the brewing device hidden in the first side panel.

[0038] Figure 4 yes Figure 2 A schematic diagram of the transmission mechanism of the brewing device.

[0039] Figure 5 yes Figure 1 A schematic diagram of the brewing cylinder of the brewing device in the second position.

[0040] Figure 6 yes Figure 5 A three-dimensional schematic diagram of the brewing device.

[0041] Figure 7 yes Figure 2 A three-dimensional schematic diagram of the brewing device from another perspective.

[0042] Figure 8 yes Figure 7 A partial schematic diagram of the brewing device.

[0043] Figure 9 yes Figure 7 A bottom view of the brewing device, in which the lower piston presses against the cantilever.

[0044] Figure 10 It is along Figure 9 Schematic diagram of the cross section along line AA.

[0045] Figure 11 yes Figure 7 The diagram shows the brewing chamber of the brewing device in a closed state, with the lower piston abutting against the cantilever. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0047] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0048] In related technologies, linear brewers typically employ a screw structure. A drive motor rotates the screw, which in turn moves the brewing cylinder upwards to complete the powder pressing and brewing action. After brewing, the screw rotates in the opposite direction, driving the brewing cylinder downwards. The slag cake is then ejected by a top slag rod and scraped away by a scraper rod. However, this structure suffers from the technical problem of a long brewing stroke and a long brewing time.

[0049] To overcome the above-mentioned technical defects, the present invention proposes a brewing device 100, which innovatively adopts a method in which the brewing piston 41 and the brewing cylinder 40 move simultaneously, thereby achieving synchronous control of the rotational movement of the brewing cylinder 40 and the axial movement of the brewing piston 41, thus efficiently completing the filling, brewing and slag discharge process of powder.

[0050] Reference Figures 1 to 6 In the illustrated embodiment, the brewing device 100 includes a support assembly 20, a transmission mechanism 30, a brewing cylinder 40, a brewing piston 41, and a residue-pushing piston 42. The support assembly 20 supports and secures the other components of the brewing device 100 to ensure its stability and reliability. The transmission mechanism 30, located within the support assembly 20, serves as the core drive component of the brewing device 100, providing necessary power and motion control.

[0051] The brewing cylinder 40 is connected to the transmission mechanism 30, which drives the brewing cylinder 40 to rotate. The brewing cylinder 40 has a brewing chamber 401, which includes a filling opening 402 for filling powder. As the main component for containing and brewing powder, the rotational movement of the brewing cylinder 40 allows it to switch between different positions, such as between powder filling and brewing positions, or between slag discharge and brewing positions. The filling opening 402 is designed to facilitate powder filling while ensuring reliable closure during the brewing process.

[0052] The brewing piston 41 is connected to the transmission mechanism 30, which drives the brewing piston 41 to move axially so that the brewing piston 41 closes the brewing chamber 401 by filling the opening 402. The main function of the brewing piston 41 is to close the brewing chamber 401. It can also apply appropriate pressure during the brewing process. At the same time, it can be equipped with a liquid outlet pipe 411 to facilitate the flow of the brewed beverage.

[0053] The slag-pushing piston 42 is engaged with the brewing cylinder 40, and the piston 42 and the brewing cylinder 40 can move relative to each other. The slag-pushing piston 42 is used to push out the brewed powder cake after brewing, realizing an automatic cleaning function. Alternatively, the slag-pushing piston 42 can also be used to adjust the volume of the brewing chamber 401.

[0054] The brewing cylinder 40 is rotatable between a first position and a second position. In the first position, the brewing chamber 401 corresponds to the brewing piston 41 along the axial direction of the brewing piston 41. For example, as... Figure 1 As shown, the centerline of the brewing chamber 401 is coaxial with the axis of the brewing piston 41. At this time, the slag-pushing piston 42 is in a higher position relative to the brewing cylinder 40 to push out the powder residue 60. Of course, the centerline of the brewing chamber 401 being coaxial with the axis of the brewing piston 41 can also mean that the slag-pushing piston 42 is in a lower position relative to the brewing cylinder 40, ready for powder pressing and brewing. In the second position, the brewing chamber 401 and the brewing piston 41 are offset along the axial direction of the brewing piston 41. For example, as... Figure 5 As shown, the centerline of the brewing chamber 401 is offset from the axis of the brewing piston 41. Furthermore, during the rotation of the brewing cylinder 40 between the second position and the first position, the transmission mechanism 30 drives the brewing piston 41 to move along the axial direction of the brewing piston 41.

[0055] This design allows the brewing cylinder 40 to switch between a second position and a first position through rotational movement. While the brewing cylinder 40 rotates, the transmission mechanism 30 also drives the brewing piston 41 to move axially, thereby closing and opening the brewing chamber 401. This parallel design of the brewing cylinder 40's rotation and the brewing piston 41's axial movement not only shortens the brewing stroke and reduces manufacturing time but also lowers the overall height of the brewing device 100. Compared to existing technologies where the transmission structure can only drive the brewing cylinder 40 in a single direction, the structural design of this invention is more compact and efficient.

[0056] The first position can be either the brewing cylinder 40 waiting to press the powder for brewing, or the position where the pusher piston 42 pushes the powder residue 60 upwards. The second position can be either the brewing cylinder 40 receiving the powder, or the brewing cylinder 40 removing the powder residue 60. A transmission mechanism simultaneously controls the rotation of the brewing cylinder 40 between the first and second positions, as well as the movement of the brewing piston 41, reducing the time spent on separate operations and thus improving the efficiency of beverage preparation. It also allows for more precise control of the rotation angle of the brewing cylinder 40 and the movement distance of the brewing piston 41, ensuring repeatability and consistency in each operation. Furthermore, it reduces the number of parts in the brewing device 100, optimizes the internal space layout of the machine, making it more compact and suitable for home or small commercial settings.

[0057] The rotation of the brewing cylinder 40 and the movement of the brewing piston 41 are both achieved through a common transmission mechanism 30. This design not only reduces the number of transmission mechanisms, thereby reducing the space required for the entire device, but also reduces production costs to some extent.

[0058] In one embodiment, the transmission mechanism 30 includes a motor 31 and an intermediate transmission member 32 driven by the motor 31. The brewing cylinder 40 and the brewing piston 41 are respectively connected to the intermediate transmission member 32 for transmission. The intermediate transmission member 32 is configured to simultaneously drive the brewing cylinder 40 and the brewing piston 41 to move.

[0059] This design simplifies the transmission structure, reduces the number of parts, lowers manufacturing costs, and ensures coordinated movement between the brewing cylinder 40 and the brewing piston 41, thereby improving the reliability of the equipment.

[0060] The motor 31 serves as the power source, providing the necessary torque and speed to drive the movement of the brewing cylinder 40 and the brewing piston 41. The intermediate transmission component 32 acts as a bridge, transmitting the power from the motor 31 to the brewing cylinder 40 and the brewing piston 41, while ensuring the synchronization and coordination of their movements. This design not only improves the equipment's working efficiency but also enhances its stability and durability, allowing the entire brewing device 100 to maintain excellent performance even during long-term operation.

[0061] Furthermore, the intermediate transmission component 32 is constructed as a vertically arranged threaded spindle. The motor 31 drives the threaded spindle to rotate. The brewing piston 41 is connected to the threaded spindle and is restricted to move along the axial direction of the threaded spindle. The threaded spindle is connected to the brewing cylinder 40 to drive the brewing cylinder 40 to rotate.

[0062] The threaded spindle design converts rotary motion into linear motion, resulting in a compact structure and high transmission efficiency. It can precisely control the axial movement of the brewing piston 41 and the rotation of the brewing cylinder 40, thereby improving the accuracy of the brewing process.

[0063] For example, the threaded spindle can be a screw, lead screw, or other shaft-shaped or cylindrical component with external threads. The brewing piston 41 and the brewing cylinder 40 are threadedly connected to the threaded spindle. The brewing piston 41 is restricted to rotate with the threaded spindle. When the threaded spindle rotates, the brewing piston 41 moves axially along the threaded spindle through the threaded engagement. When the brewing cylinder 40 is driven to rotate by the threaded spindle, the brewing cylinder 40 is fixed relative to the threaded spindle, thus the brewing cylinder 40 rotates synchronously with the threaded spindle.

[0064] More specifically, the threaded spindle includes a first threaded section 321 and a second threaded section 322 arranged sequentially along the axial direction of the threaded spindle. The brewing piston 41 is drivenly connected to the first threaded section 321, and the brewing cylinder 40 is drivenly connected to the second threaded section 322. The threads of the first threaded section 321 and the second threaded section 322 have opposite directions of rotation.

[0065] The threaded spindle is designed with two threaded segments in opposite directions, allowing the brewing piston 41 and brewing cylinder 40 to move towards or away from each other under the same drive. Since the first threaded segment 321 and the second threaded segment 322 have opposite directions of rotation, when the motor 31 drives the threaded spindle to rotate, the brewing piston 41 and brewing cylinder 40 can move simultaneously, such as moving away from each other simultaneously or moving towards each other simultaneously. This shortens the brewing stroke, reduces manufacturing time, and lowers the overall height of the brewing device 100.

[0066] In one embodiment, the movement of the intermediate transmission member 32, the brewing cylinder 40 and the brewing piston 41 can satisfy the following condition: during the process of the intermediate transmission member 32 driving the brewing cylinder 40 to rotate from the second position to the first position, the intermediate transmission member 32 drives the brewing piston 41 to move towards the brewing cylinder 40 along the axial direction of the brewing piston 41.

[0067] When the brewing cylinder 40 rotates from the second position (i.e., the position offset from the brewing piston 41 along its axial direction) to the first position (i.e., the position corresponding to the brewing piston 41 along its axial direction), because the threads of the first threaded section 321 and the second threaded section 322 have opposite directions of rotation, the rotation of the threaded spindle simultaneously drives the brewing piston 41 to move axially toward the brewing cylinder 40. This design allows the brewing cylinder 40 and the brewing piston 41 to achieve coordinated movement under the action of the same driving source, thereby improving brewing efficiency.

[0068] In one embodiment, the movement of the intermediate transmission member 32, the brewing cylinder 40 and the brewing piston 41 can also satisfy the following condition: during the process of the intermediate transmission member 32 driving the brewing cylinder 40 to rotate from the first position to the second position, the intermediate transmission member 32 drives the brewing piston 41 to move away from the brewing cylinder 40 along the axial direction of the brewing piston 41.

[0069] When the brewing cylinder 40 rotates from the first position (i.e., the position corresponding to the brewing piston 41 along its axial direction) to the second position (i.e., the position offset from the brewing piston 41 along its axial direction), because the threads of the first threaded section 321 and the second threaded section 322 have opposite directions of rotation, the rotation of the threaded spindle simultaneously drives the brewing piston 41 to move away from the brewing cylinder 40 along its axial direction. This design allows the brewing cylinder 40 and the brewing piston 41 to achieve coordinated movement under the action of the same driving source.

[0070] This kinematic relationship ensures the coordinated movement of the brewing piston 41 and the brewing cylinder 40 at their respective positions, so that while the brewing cylinder 40 rotates, the brewing piston 41 can move closer to or further away from the brewing cylinder 40 in a timely manner, ensuring the smooth progress of the powder receiving, pressing, brewing and slag discharge processes, and improving the reliability and stability of the equipment operation.

[0071] In another embodiment, the intermediate transmission member 32 is configured to rotate around a first axis R, which is vertically arranged. During the process of the brewing cylinder 40 rotating from the second position to the first position, the rotation direction of the intermediate transmission member 32 is the same as the rotation direction of the brewing cylinder 40.

[0072] This design defines the relationship between the intermediate transmission component 32 and the rotation direction of the brewing cylinder 40, ensuring the reliable operation of the transmission mechanism 30, optimizing transmission efficiency, reducing energy loss, reducing wear on the transmission mechanism 30, and extending the service life of the equipment.

[0073] In another embodiment, the intermediate transmission member 32 is configured to rotate around a first axis R, which is vertically arranged. The intermediate transmission member 32 includes a first guide portion 323 and a second guide portion 324 arranged sequentially along the axial direction of the intermediate transmission member 32. The brewing piston 41 is driven to the first guide portion 323, and the brewing cylinder 40 is driven to the second guide portion 324. The guiding directions of the first guide portion 323 and the second guide portion 324 are opposite. The brewing piston 41 and the brewing cylinder 40 can move towards each other or away from each other under the drive of the intermediate transmission member 32.

[0074] By setting a first guide part 323 and a second guide part 324 with opposite guiding directions, the structure of the transmission mechanism 30 is simplified, the transmission efficiency is improved, and the precise control of the movement of the brewing piston 41 and the brewing cylinder 40 is ensured.

[0075] Specifically, the intermediate transmission component 32 is constructed as a threaded spindle, which includes a first threaded section 321 and a second threaded section 322. The first threaded section 321 is constructed as a first guide portion 323, and the second threaded section 322 is constructed as a second guide portion 324. The brewing piston 41 is drivenly connected to the first threaded section 321, and the brewing cylinder 40 is drivenly connected to the second threaded section 322. The first threaded section 321 and the second threaded section 322 are arranged sequentially along the axial direction of the threaded spindle.

[0076] The threaded spindle is designed with two threaded segments with different directions of rotation. The brewing piston 41 and the brewing cylinder 40 can be driven by the threaded spindle at the same time, which improves the efficiency of beverage preparation, reduces user waiting time, and enhances the user experience.

[0077] The first guide portion 323 and the second guide portion 324 can also be configured in other ways. For example, the first guide portion 323 and the second guide portion 324 can be constructed as cam grooves, spiral grooves, etc. with opposite guiding directions.

[0078] Furthermore, the vertical orientation of the first axis R helps improve the overall stability of the brewing device, reducing brewing errors caused by equipment tilting or vibration. At the same time, the vertical orientation of the first axis R also makes the movement of the brewing cylinder 40 and the brewing piston 41 more ergonomic, facilitating user operation and maintenance.

[0079] Reference Figure 4 This invention provides multiple solutions for the specific configuration of the threaded spindle.

[0080] In one embodiment, the thread spindle is configured such that the thread lead of the first thread segment 321 and the thread lead of the second thread segment 322 are equal, and the thread engagement length L1 of the first thread segment 321 and the thread engagement length L2 of the second thread segment 322 are equal.

[0081] The first threaded section 321 and the second threaded section 322 are configured to have equal thread lead and thread engagement length to ensure the synchronous movement accuracy of the brewing cylinder 40 and the brewing piston 41, thereby improving the performance of the brewing device 100.

[0082] In one embodiment, the thread lead of the first thread segment 321 is greater than the thread lead of the second thread segment 322, and the thread engagement length L1 of the first thread segment 321 is less than the thread engagement length L2 of the second thread segment 322.

[0083] Because the lead of the first threaded section 321 is relatively large, the brewing piston 41, which is driven by the first threaded section 321, will move at a faster speed when the threaded spindle rotates; while the lead of the second threaded section 322 is relatively small, and the brewing cylinder 40, which is driven by the second threaded section 322, will move at a slower speed. This design is suitable for scenarios where the brewing cylinder 40 and the brewing piston 41 need to work together at different speeds and displacements, such as when the brewing piston 41 needs to quickly and accurately compact the powder, while the brewing cylinder 40 needs to rotate smoothly to a designated position.

[0084] Through differentiated design, both rapid compaction and slow rotation operations can be achieved by driving the same threaded spindle, reducing the need for additional transmission components.

[0085] In one embodiment, the thread lead of the first thread segment 321 is less than the thread lead of the second thread segment 322, and the thread length L1 of the first thread segment 321 is greater than the thread engagement length L2 of the second thread segment 322.

[0086] Because the lead of the first threaded section 321 is small, the brewing piston 41, which mates with the first threaded section 321, moves at a slower speed, suitable for operations requiring precise control. Conversely, the lead of the second threaded section 322 is larger, and the brewing cylinder 40, which mates with the second threaded section 322, moves at a faster speed, suitable for operations requiring rapid positioning. This design is suitable for scenarios where the brewing cylinder 40 and the brewing piston 41 need to work together at different speeds and displacements. For example, the brewing piston 41 needs to slowly and precisely compact the powder, while the brewing cylinder 40 needs to quickly rotate to a designated position.

[0087] Through differentiated design, both precise compaction and rapid rotation can be achieved by driving the same threaded spindle, reducing the need for additional transmission components.

[0088] In one embodiment, the first threaded section 321 and the second threaded section 322 are configured to drive the brewing cylinder 40 and the brewing piston 41 to move toward or away from each other along the first axis R at equal speeds.

[0089] When the brewing cylinder 40 and the brewing piston 41 move toward or away from each other at the same speed, their movements are completely synchronized, avoiding uneven force or jamming caused by inconsistent speeds. Simultaneous movement reduces vibration and noise, making the entire brewing device 100 operate more smoothly.

[0090] In one embodiment, the first threaded segment 321 and the second threaded segment 322 are configured such that the path lengths for driving the brewing cylinder 40 and the brewing piston 41 to move toward or away from each other along the first axis R are equal.

[0091] When the movement path lengths of the brewing cylinder 40 and the brewing piston 41 are equal, their movements are completely symmetrical, resulting in a more uniform force distribution and avoiding uneven force distribution or jamming problems caused by inconsistent path lengths. The symmetrical motion design allows for better space utilization, making the transmission system more compact and suitable for applications with limited space.

[0092] These settings increase design flexibility, allowing for different motion speeds and path requirements to be achieved by adjusting the thread lead and thread engagement length according to actual application needs. This optimizes the motion characteristics of the brewing piston 41 and the brewing cylinder 40, improving the adaptability and efficiency of the equipment.

[0093] In one embodiment, the intermediate transmission member 32 is configured as a shaft cylinder, and the first guide portion 323 and the second guide portion 324 are disposed on the outer peripheral surface of the shaft cylinder.

[0094] By constructing the intermediate transmission component 32 as a shaft, the structural design is optimized. A guide part is set on the outer circumference of the shaft, which simplifies the guidance of the brewing piston 41 and the brewing cylinder 40, and also facilitates the movement guidance of the brewing piston 41 and the brewing cylinder 40. This improves the structural compactness, reduces the size of the equipment, facilitates processing and assembly, and reduces manufacturing costs.

[0095] Reference Figure 2 and Figure 6 The support assembly 20 includes a first side plate 21 and a second side plate 22 spaced apart. The first side plate 21 and the second side plate 22 are respectively disposed on both sides of the shaft cylinder. When the brewing cylinder 40 and the brewing piston 41 are driven by the shaft cylinder to move along the axial direction of the shaft cylinder, the first side plate 21 and the second side plate 22 are used to restrict the rotational degrees of freedom of the brewing cylinder 40 and the brewing piston 41, ensuring the stable operation of the transmission mechanism 30. A clearance opening 223 is provided below the second side plate 22, through which the brewing cylinder 40 rotates between a first position and a second position.

[0096] In one implementation, refer to Figures 7 to 9 The brewing device 100 also includes a limiting member 27, which includes a pivot portion 271 and a cantilever 272. The pivot portion 271 is rotatably connected to the support assembly 20, and the cantilever 272 uses the pivot portion 271 as a swing fulcrum. An elastic element 28 is provided between the cantilever 272 and the support assembly 20. During the process of the brewing cylinder 40 rotating from the second position to the first position, the slag-pushing piston 42 presses against the cantilever 272 to deform the elastic element 28. The brewing cylinder 40 and the brewing piston 41 move towards each other, and the slag-pushing piston 42 separates from the cantilever 272 so that the cantilever 272 is reset under the action of the reset force of the elastic element 28. The brewing cylinder 40 and the brewing piston 41 move away from each other, and the cantilever 272 abuts against the slag-pushing piston 42 along the axial direction of the pivot portion 271. Under the pressure of the cantilever 272, the slag-pushing piston 42 moves to a position flush with the filling opening 402.

[0097] The combination of pivot 271, cantilever 272, and elastic element 28 enables precise control of the slag-pushing piston 42. As the brewing cylinder 40 coordinates with the slag-pushing piston 42 to rotate from the second position to the first position, the slag-pushing piston 42 presses against the limiting member 27, and the cantilever 272 rotates around the pivot 271 to make way for the slag-pushing piston 42, compressing the elastic element 28. When the slag-pushing piston 42 separates from the cantilever 272, the cantilever 272 resets under the action of the elastic element 28, facilitating the limiting of the slag-pushing piston 42 in subsequent operations.

[0098] The limiting component 27 can both allow the slag pushing piston 42 to move and limit the slag pushing piston 42. The simple structure can realize the precise control and automated operation of the slag pushing piston 42, thereby optimizing space utilization and reducing the cost of the brewing device 100.

[0099] Reference Figure 10 and Figure 11 When the brewing cylinder 40 rotates from the second position to the first position in conjunction with the slag-pushing piston 42, the brewing device 100 can proceed with subsequent powder pressing and cooking. During the powder pressing and cooking process, the slag-pushing piston 42 moves upward with the brewing cylinder 40 to release the pressure on the limiting member 27. The limiting member 27 is reset under the restoring force of the elastic element 28. When the brewing cylinder 40 moves away from the brewing piston 41, that is, during the downward movement of the brewing cylinder 40, due to the limiting effect of the limiting member 27, the slag-pushing piston 42 cannot continuously follow the brewing cylinder 40 downward. Under the limiting effect of the limiting member 27, only the brewing cylinder 40 moves downward, and the slag-pushing piston 42 moves relative to the brewing cylinder 40, causing the powder cake to be pushed out. The cantilever 272 abuts against the slag pusher piston 42 along the axial direction of the pivot 271. Under the pressure of the cantilever 272, the slag pusher piston 42 moves relative to the brewing cylinder 40 to a position flush with the filling opening 402. The slag pusher piston 42 pushes out the powder cake from the filling opening 402. The lower surface of the powder cake is flush with the filling opening 402, which facilitates the subsequent slag scraping operation.

[0100] Reference Figure 5 and Figure 6 In one embodiment, the brewing device 100 further includes a powder channel 25 disposed on the support assembly 20, the brewing cylinder 40 being in a second position, and a portion of the powder channel 25 extending into the brewing chamber 401.

[0101] The design of the powder channel 25 solves the problem of powder overflow in semi-open powder channels in the prior art. The powder channel 25 extends at least partially into the brewing tank 40, effectively preventing powder splatter / overflow when supplying powder to the brewing tank 40. In the prior art, the powder carries static electricity and scatters when falling, landing on the brewing piston 41, support assembly 20, or intermediate transmission components. Repeated use can lead to hygiene problems or cause the intermediate transmission components to jam or even seize. By improving the structure of the powder channel 25, this problem is greatly reduced.

[0102] The powder channel 25, which can extend into the lower end of the brewing cylinder 40, can be made of soft rubber or can be movable relative to the support assembly 20, so as to facilitate the rotation of the brewing cylinder 40 between the first position and the second position, so that the lower end of the brewing cylinder 40 can smoothly extend into the brewing cylinder 40 or smoothly separate from the brewing cylinder 40.

[0103] In one embodiment, the brewing cylinder 40 further has a scraping position where the brewing chamber 401 and the brewing piston 41 are offset along the axial position of the brewing piston 41. The brewing cylinder 40 moves to the scraping position to perform the scraping action. The scraping position is located between the first position and the second position, or the scraping position is the same as the second position.

[0104] The scraping action can be the action of sweeping away the powder residue 60 after the slag pusher piston 42 pushes it out. The scraping action can be achieved by the movement of the brewing tank 40 or by the movement of the scraping mechanism.

[0105] For example, the slag scraping mechanism may be the slag scraper 50 described below.

[0106] The setting of the scraping position optimizes the scraping process. When the brewing cylinder 40 moves to the scraping position, the brewing chamber 401 and the brewing piston 41 are offset along the axial direction of the brewing piston 41, facilitating the scraping action. The scraping position can be set between the first position and the second position, that is, the brewing cylinder 40 rotates from the first position to the scraping position, and then rotates to the second position. The movement speed or the time elapsed in the two segments can be the same or different, and the brewing cylinder 40 can stay in the scraping position for a preset time. The scraping position can also be the same as the second position, that is, the brewing cylinder 40 moves directly to the second position. The scraping position can be flexibly selected according to specific design requirements.

[0107] Furthermore, the brewing device 100 also includes a scraper 50 disposed above the brewing cylinder 40, and a retaining element 29 connecting the scraper 50 and the brewing cylinder 40. The brewing chamber 401 and the brewing piston 41 correspond to each other along the axial direction of the brewing cylinder 40. The scraper 50 is held in contact with the upper edge of the brewing cylinder 40 by the retaining element 29. During the process of the brewing cylinder 40 rotating from the first position to the scraping position, the scraper 50 sweeps across the upper edge of the brewing cylinder 40 in the horizontal direction.

[0108] The retaining element 29 ensures reliable contact between the scraper 50 and the brewing cylinder 40, allowing the scraper 50 to effectively sweep horizontally across the upper edge of the brewing cylinder 40, removing residue and preventing powder residue from remaining on the surface of the pusher piston 42. This design makes the scraping process more efficient and reliable, improving the cleanliness and service life of the entire brewing device 100.

[0109] The retaining element 29 can be constructed as a spring, with one end of the spring connected to the scraper 50 and the other end connected to the brewing tank 40. Regardless of whether the brewing tank 40 moves up, down, or rotates, the spring can keep the scraper 50 in contact with the brewing tank 40, thereby ensuring reliable scraping.

[0110] The top of the slag-pushing piston 42 is equipped with a filter screen 422. The filter screen 422 pushes out the powder residue 60 until the lower surface of the powder residue 60 is flush with the filling opening 402 of the brewing tank 40. The scraper 50 can sweep across the filter screen 422, resulting in cleaner scraping and preventing powder residue 60 residue from remaining on the surface of the filter screen 422. Moreover, the upper surface of the filter screen 422 can be flat, allowing for more thorough and clean horizontal scraping. The flat filter screen 422 can also make the beverage particles more evenly and fully wetted, thereby improving the distribution and wetting effect of the beverage particles.

[0111] In the prior art, in order to adapt to the scraping action of the scraping mechanism, the filter screen 422 is designed as an arc-shaped structure with a high center and low edges. However, this arc-shaped design can lead to problems such as uneven powder compaction, uneven wetting, and uneven extraction.

[0112] To address these issues, the upper surface of filter 422 is cleverly designed as a flat structure instead of the traditional curved structure. This design not only completely eliminates problems such as uneven powder compaction, uneven wetting, and uneven extraction caused by the curved design, but also greatly improves the efficiency and cleanliness of slag scraping.

[0113] The design of the flat filter screen 422 allows the powder to be more evenly and fully saturated, thereby effectively improving the brewing effect. In addition, the flat filter screen 422, in conjunction with the flat scraping action of the scraper 50, ensures that powder residue on the surface of the filter screen 422 is thoroughly removed, avoiding the accumulation of residue and further improving the cleanliness and efficiency of the brewing device 100.

[0114] The present invention also provides a beverage machine, including the brewing device 100 as described above. The beverage machine also includes a grinding device and a beverage outlet. The grinding device is used to provide powder to be conveyed to the brewing chamber 401. The brewing piston 41 is provided with a liquid outlet pipe 411 communicating with the brewing chamber 401. The liquid outlet pipe 411 is connected to the beverage outlet.

[0115] In this beverage machine, the grinding device is typically located above or to one side of the powder channel 25 of the brewing device 100, used to grind the raw materials into small powder particles suitable for brewing. The grinding device generally includes a grinding motor 31, grinding blades, and a powder conveying structure, and can adjust the grinding degree according to user needs to adapt to the particle size requirements of different brewing methods.

[0116] The powder channel 25 connects the grinding device and the brewing device 100, and is used to introduce the ground powder into the brewing chamber 401 of the brewing cylinder 40. The brewing piston 41 is provided with a liquid outlet pipe 411 that communicates with the brewing chamber 401, and this pipe is used to discharge the brewed beverage. The liquid outlet pipe 411 is connected to the beverage outlet for easy access by the user.

[0117] This beverage machine integrates the brewing device 100 with the grinding device and beverage outlet into a complete system, forming a complete workflow from raw material grinding, powder conveying, brewing to beverage output, improving the functionality and practicality of the overall equipment, and expanding the application range of the brewing device 100.

[0118] Compared with traditional beverage machines, the beverage machine of this invention has the advantages of compact structure, high working efficiency, and simple use and maintenance, and is especially suitable for home and small commercial use.

[0119] The threaded spindle of the transmission mechanism 30 is designed with two threaded sections in different directions, allowing the brewing piston 41 and brewing cylinder 40 to move simultaneously. This shortens the length of the threaded spindle, thereby reducing the brewing stroke and lowering the overall height of the brewing device 100, thus reducing manufacturing time. The rotating design of the brewing cylinder 40 facilitates cooperation with the extended powder channel 25, preventing powder overflow during supply. The flat top design of the slag-pushing piston 42 ensures more even and thorough powder wetting and more thorough horizontal slag scraping, avoiding powder residue residue on the surface of the filter screen 422.

[0120] In summary, the beverage machine provided by this invention, through its innovative brewing device 100 design, effectively solves the problems of extended travel time, long brewing time, easy powder overflow, and difficult maintenance existing in the prior art, thereby improving the efficiency and quality of beverage preparation and enhancing the user experience.

[0121] In summary, the brewing device 100 and beverage machine provided by this invention effectively solve several technical problems existing in the prior art through innovative design. The entire working process of the brewing device 100 can include the following three main stages:

[0122] First, refer to Figure 10 During the transition from the second position to the first position, the brewing cylinder 40 moves in coordination with the slag-pushing piston 42. The slag-pushing piston 42 presses against the limiting member 27, and the cantilever 272 rotates around the pivot 271 to make way for the slag-pushing piston 42, compressing the elastic element 28. At this time, the brewing cylinder 40 rotates to a position corresponding to the brewing piston 41 along the axial direction, and the brewing chamber 401 contains the powder. The grinding device grinds the raw materials into powder suitable for brewing, and then the powder falls into the brewing chamber 401 of the brewing cylinder 40 through the powder channel 25.

[0123] Secondly, refer to Figure 11 During the powder preparation process, due to the special design of the two threaded sections with different rotation directions of the main thread, the brewing piston 41 moves downward while the brewing cylinder 40 moves upward. The slag-pushing piston 42 moves upward with the brewing cylinder 40 and releases the pressure on the limiting member 27. The limiting member 27 is reset under the restoring force of the elastic element 28. At this time, the brewing piston 41 closes the brewing chamber 401 and compacts the powder. Hot water enters the brewing chamber 401 through the liquid inlet pipe 45 in the slag-pushing piston 42, contacts the powder, and brews it. The brewed beverage flows to the beverage outlet through the liquid outlet pipe 411.

[0124] Finally, refer to Figure 2 and Figure 6During the process from pressing and boiling the powder to scraping the residue, due to the limiting effect of the limiting component 27, the slag-pushing piston 42 cannot continue to move downwards; only the brewing cylinder 40 moves downwards, while the brewing piston 41 moves upwards. The powder residue cake 60 is pushed out by the slag-pushing piston 42, and the brewing cylinder 40 returns to its first position. Then, the scraping rod, through rotation or relative movement with the brewing cylinder 40, scrapes the powder residue cake 60 away from the brewing cylinder 40, completing the cleaning process and preparing for the next brewing.

[0125] This invention achieves several technical benefits through the above design: First, the design of two threaded sections with different helical directions on the threaded spindle allows the brewing piston 41 and the brewing cylinder 40 to move simultaneously, thereby shortening the brewing stroke and improving work efficiency; Second, the rotating design of the brewing cylinder 40, combined with the extended powder channel 25, effectively prevents powder overflow and shortens the length of the threaded spindle, reducing the overall height of the brewing device 100; Third, the top flat design of the slag-pushing piston 42 ensures more uniform and thorough powder wetting and more thorough horizontal slag scraping, avoiding powder residue on the surface of the filter screen 422; Fourth, the design of the rotatable limiting component 27 avoids damage and failure caused by its own deformation and fatigue, improving the durability and reliability of the device.

[0126] It should be noted that the present invention is not limited to the specific embodiments described above. Without departing from the principles and essence of the present invention, those skilled in the art can make various modifications, substitutions, or alterations to the present invention, and these should all be considered within the scope of protection of the present invention. For example, the specific parameters of the threaded spindle can be adjusted according to actual needs; the slag scraping mechanism can adopt different driving methods; the material, shape, or movement mode of the powder channel 25 can be optimized according to specific application scenarios, etc.

[0127] Furthermore, the brewing device 100 of the present invention is not only applicable to coffee machines, but can also be applied to other beverage machines that require brewing powders, such as tea machines and hot chocolate machines.

[0128] In summary, the brewing device 100 and beverage machine provided by this invention, through innovative structural design and working method, achieve a more efficient, reliable and cleaner beverage preparation process, greatly improving user experience and product competitiveness.

[0129] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0130] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A brewing device, characterized in that: include: Support assembly; A transmission mechanism is provided on the bracket assembly; A brewing cylinder is connected to the transmission mechanism, which can drive the brewing cylinder to rotate. The brewing cylinder has a brewing chamber, which includes a filling opening for filling powder. A brewing piston is connected to the transmission mechanism, which can drive the brewing piston to move so that the brewing piston closes the brewing chamber from the filling opening. A slag-pushing piston is attached to the brewing cylinder, and the slag-pushing piston and the brewing cylinder are movable relative to each other; The brewing cylinder is rotatable between a first position and a second position. In the first position, the brewing chamber corresponds to the brewing piston along the axial direction of the brewing piston. In the second position, the brewing chamber is offset from the brewing piston along the axial direction of the brewing piston. During the rotation of the brewing cylinder between the second position and the first position, the transmission mechanism drives the brewing piston to move along the axial direction of the brewing piston.

2. The brewing device according to claim 1, characterized in that, The transmission mechanism includes a motor and an intermediate transmission component driven by the motor. The brewing cylinder and the brewing piston are respectively connected to the intermediate transmission component for transmission. The intermediate transmission component is configured to simultaneously drive the brewing cylinder and the brewing piston to move.

3. The brewing device according to claim 2, characterized in that, The intermediate transmission component is constructed as a vertically arranged threaded spindle. The motor drives the threaded spindle to rotate. The brewing piston is connected to the threaded spindle and is limited to move along the axial direction of the threaded spindle. The threaded spindle is connected to the brewing cylinder to drive the brewing cylinder to rotate.

4. The brewing device according to claim 3, characterized in that, The threaded spindle includes a first threaded segment and a second threaded segment arranged sequentially along the axial direction of the threaded spindle. The brewing piston is driven by the first threaded segment, and the brewing cylinder is driven by the second threaded segment. The threads of the first threaded segment and the second threaded segment have opposite directions.

5. The brewing device according to claim 2, characterized in that, The motion of the intermediate transmission component, the brewing cylinder, and the brewing piston satisfies at least one of the following characteristics: During the process of the intermediate transmission component driving the brewing cylinder to rotate from the second position to the first position, the intermediate transmission component drives the brewing piston to move toward the brewing cylinder along the axial direction of the brewing piston. During the process of the intermediate transmission component driving the brewing cylinder to rotate from the first position to the second position, the intermediate transmission component drives the brewing piston to move away from the brewing cylinder along the axial direction of the brewing piston.

6. The brewing device according to claim 2, characterized in that, The intermediate transmission component is configured to rotate around a first axis, which is vertically arranged. During the process of the brewing cylinder rotating from the second position to the first position, the rotation direction of the intermediate transmission component is the same as the rotation direction of the brewing cylinder.

7. The brewing device according to claim 2, characterized in that, The intermediate transmission component is configured to rotate around a first axis, which is vertically arranged. The intermediate transmission component includes a first guide portion and a second guide portion arranged sequentially along the axial direction of the intermediate transmission component. The brewing piston is driven by the first guide portion, and the brewing cylinder is driven by the second guide portion. The first guide portion and the second guide portion have opposite guiding directions. The brewing piston and the brewing cylinder can move towards each other or away from each other under the drive of the intermediate transmission component.

8. The brewing device according to claim 4, characterized in that, The threaded spindle is configured in one of the following ways: The first thread segment and the second thread segment have the same thread lead and the first thread segment and the second thread segment have the same thread engagement length. The thread lead of the first thread segment is greater than the thread lead of the second thread segment, and the thread engagement length of the first thread segment is less than the thread engagement length of the second thread segment. The thread lead of the first thread segment is less than the thread lead of the second thread segment, and the thread engagement length of the first thread segment is greater than the thread engagement length of the second thread segment. The first threaded segment and the second threaded segment are configured to drive the brewing cylinder and the brewing piston to move towards or away from each other along the first axis at equal speeds. The first threaded segment and the second threaded segment are configured such that the path lengths for driving the brewing cylinder and the brewing piston to move toward or away from each other along the first axis are equal.

9. The brewing device according to claim 7, characterized in that, The intermediate transmission component is constructed as a shaft cylinder, with the first guide portion and the second guide portion disposed on the outer peripheral surface of the shaft cylinder.

10. The brewing device according to any one of claims 1-9, characterized in that, It also includes a limiting member, which includes a pivot and a cantilever. The pivot is rotatably connected to the support assembly, and the cantilever uses the pivot as a swing fulcrum. An elastic element is provided between the cantilever and the support assembly. During the process of the brewing cylinder rotating from the second position to the first position, the slag pusher piston presses against the cantilever to deform the elastic element. The brewing cylinder and the brewing piston move toward each other, and the slag pushing piston separates from the cantilever so that the cantilever is reset under the restoring force of the elastic element; the brewing cylinder and the brewing piston move apart, and the cantilever abuts against the slag pushing piston along the axial direction of the pivot, and the slag pushing piston moves to a position flush with the filling opening under the pressure of the cantilever.

11. The brewing device according to any one of claims 1-9, characterized in that, The brewing device satisfies at least one of the following characteristics: The brewing device further includes a powder channel disposed on the support assembly, the brewing cylinder is in the second position, and a portion of the powder channel extends into the brewing chamber; The brewing cylinder also has a scraping position where the brewing chamber and the brewing piston are offset along the axial position of the brewing piston. The brewing cylinder moves to the scraping position to perform a scraping action. The scraping position is located between the first position and the second position, or the scraping position is the same as the second position.

12. The brewing device according to any one of claims 1-9, characterized in that, It also includes a scraper disposed above the brewing cylinder, the scraper being connected to a retaining element, the brewing chamber and the brewing piston being axially aligned along the brewing cylinder, the scraper being held in contact with the upper edge of the brewing cylinder by the retaining element; during the process of the brewing cylinder rotating from the first position to the scraping position, the scraper sweeps across the upper edge of the brewing cylinder in a horizontal direction.

13. A beverage machine, characterized in that, The beverage machine includes a brewing device as described in any one of claims 1 to 12, further comprising a grinding device and a beverage outlet, the grinding device being used to provide the powder to be conveyed to the brewing chamber, and the brewing piston having a liquid outlet line communicating with the brewing chamber and the liquid outlet line being connected to the beverage outlet.

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