An extraction assembly for a hot beverage machine and a hot beverage machine

Abstract

This invention discloses an extraction component for a hot beverage machine and a hot beverage machine incorporating the component, belonging to the technical field of hot beverage preparation equipment. The extraction component includes a main body, a sliding sleeve device, a first piston, and a residue discharge device. The first piston is slidably disposed within the main body and can be switched along the longitudinal working axis to a retracted standby position, a brewing forward position, a secondary compression position, and a residue discharge position. The hot beverage machine includes a frame, the aforementioned extraction component, a second piston, a main support frame, a raw material feeding and compression assembly, a suction assembly, and a residue discharge device. This invention, through the multi-position switching of the first and second pistons, achieves automatic circulation of raw material receiving, extraction, secondary compression, and residue discharge. Combined with the suction assembly, it promptly removes residual steam and powder, effectively increasing extraction pressure, improving residue discharge, maintaining internal cleanliness, and resulting in a high-strength overall structure that is easy to disassemble and maintain.

Description

Technical Field

[0001] This invention relates to the field of hot beverage preparation technology, specifically to an extraction component for a hot beverage machine and a hot beverage machine. Background Technology

[0002] Currently, there are various instant hot beverage machines on the market, widely used in offices, public areas, and homes for making hot drinks such as coffee, tea, and herbal teas. These machines primarily use two feeding methods: one uses disposable single-dose capsules pre-filled with granular or powdered brewing ingredients; the other directly adds bulk powdered or granular ingredients such as coffee beans, and the machine's built-in grinder grinds the ingredients into a measured amount before performing the extraction process. The core principle of the extraction process is to allow a high-temperature liquid, usually hot water, to pass through the brewing ingredients, and the liquid is extracted to form the finished beverage.

[0003] The extraction process is completed by a specialized extraction assembly, which typically includes a raw material receiving chamber, a high-temperature and high-pressure extraction liquid delivery system, and a finished beverage outlet pipeline. A controlled mechanical structure enables automatic switching between processes such as raw material reception, extraction, residue discharge, and resetting. For bulk raw material beverage machines, the raw materials are usually compressed into a filter cake before extraction. After extraction, the residue must be discharged for the next cycle.

[0004] However, existing extraction components still have many shortcomings: limited by the overall mechanical strength of the machine, the applicable extraction pressure is difficult to increase further, affecting extraction efficiency and beverage taste; the mechanical structure used to compress raw materials and drive the process circulation still has room for optimization, and incomplete residue discharge can easily lead to channel blockage; after extraction, steam and fine powder often remain inside the equipment, which not only affects the quality of subsequent brewing but also accelerates component wear, leading to frequent cleaning and reduced effective service life. Therefore, existing extraction components still need improvement in terms of extraction pressure, residue discharge effect, internal cleanliness, and overall structural strength. Summary of the Invention

[0005] An extraction component for a hot beverage machine and a hot beverage machine including the component are provided to solve the problems of limited extraction pressure, incomplete residue discharge, internal residue affecting the subsequent brewing quality, and insufficient structural strength of the machine in the prior art.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] In a first aspect, an extraction component for a hot beverage machine is provided, comprising: The main body is elongated along the longitudinal working axis, and a residue discharge device is rotatably connected to one end of the main body. A sliding sleeve device is slidably fitted onto the main body and slides along the longitudinal working axis; a first pipeline is provided on the sliding sleeve device. A first piston is slidably disposed within the main body, and a second conduit is provided on the first piston; the second conduit is configured to form a fluid connection with the first conduit to form a hydraulic seal. The first piston is configured to be able to switch along its working axis to at least the following working positions: Retreat to standby position, in which the second pipeline is separated from the first pipeline; Before brewing, the second pipeline is connected to the first pipeline at this position. At the residue discharge position, the first piston advances further from the brewing advance position, and the residue discharge device assists in scraping and discharging the raw material filter cake.

[0008] As an optimization of the extraction component for a hot beverage machine, a pre-brewing intermediate position is also included between the back standby position and the brewing advance position, in which the second pipeline is separated from the first pipeline.

[0009] As an optimization of the extraction component for a hot beverage machine, the first piston is also configured to switch between the brewing advance position and the residue discharge position to a secondary compression position, in which the first piston compresses the extracted raw material filter cake to drain residual liquid.

[0010] As an optimization of the extraction component for a hot beverage machine, it also includes a fork-shaped positioning device, which uses a form-fitting structure to confine the first piston within the main body and limit the stroke of the first piston.

[0011] As an optimization of the extraction component for a hot beverage machine, the first piston is provided with an indicator device for the user to visually view the piston position.

[0012] Secondly, a hot beverage maker is provided for providing hot beverages prepared from bulk powdered ingredients, including: frame; The extraction component in the above scheme; The second piston works in conjunction with the first piston, and an extraction chamber is formed between the first piston and the second piston.

[0013] As an optimization of the hot beverage machine, the extraction component is detachably housed within the frame of the hot beverage machine.

[0014] As an optimization of the hot beverage machine, it also includes a suction assembly configured to remove steam and powder at the end of the extraction cycle and to operate in the area of ​​the hot beverage machine corresponding to the residue discharge position of the first piston.

[0015] As an optimization of the hot beverage machine, it also includes a compression assembly configured to convey and compact powder raw materials between the first piston and the second piston; the compression assembly includes a cam device, a drive arm selectively driven by the cam device, and a compression element acting on the powder raw materials.

[0016] As an optimization of a hot beverage machine, the compression component is an L-shaped integrated structure, including a main rod and a compression base. The end of the drive arm is equipped with a roller, which is in contact with the upper surface of the compression base.

[0017] As an optimization of the hot beverage machine, the lower surface of the compression base is concave arc-shaped, and the arc-shaped contour of the lower surface, together with the first piston, the second piston and the frame, forms the lateral boundary of the extraction chamber.

[0018] As an optimization of the hot beverage machine, the cam device is also configured to drive the movable residue cake discharge device.

[0019] As an optimization of the hot beverage machine, it also includes a main support frame, which includes an upper frame, a lower frame and multiple tie rods, with the multiple tie rods extending longitudinally and fixedly connected between the upper frame and the lower frame.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Through the multi-position switching design of the first piston, the automatic circulation of raw material receiving, extraction, secondary compression and residue discharge is realized, which effectively improves the extraction efficiency and the taste of the beverage; the secondary compression position can fully drain the residual liquid of the filter cake, and the residue discharge device assists in scraping, making the residue discharge more thorough and avoiding channel blockage.

[0021] (2) The suction assembly promptly removes steam and powder from the extraction chamber area after the brewing cycle, keeping the interior clean and dry, reducing component wear and the impact of residues on the quality of the next brewing, significantly reducing the cleaning frequency, and extending the effective service life of the equipment.

[0022] (3) The compression component adopts an integrated structure and is driven by rollers, which makes feeding smooth and frictionless; the concave arc design of the lower surface of the compression base, together with the first piston, the second piston and the frame, forms the lateral boundary of the extraction chamber, making the raw material containment and compression more closely fit, and improving the extraction stability.

[0023] (4) The main support frame adopts a box-type frame structure. The upper and lower frames are fixed together by tie rods. With the sealing plate and the ejector pin, the thrust is dispersed, making the whole machine extremely strong and able to withstand higher extraction pressure. At the same time, the extraction components are designed to be detachable for easy cleaning and maintenance, taking into account both practicality and durability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a side perspective view of the extraction component according to an embodiment of the present invention; Figure 2 This is a front perspective view of the extraction component according to an embodiment of the present invention; Figure 3 This is a side perspective view of the extraction component in a semi-disassembled state according to an embodiment of the present invention; Figure 4 This is an exploded view of the first piston (lower piston) according to an embodiment of the present invention; Figure 5 This is a side perspective view of a hot beverage machine equipped with an extraction component according to an embodiment of the present invention; Figure 6 for Figure 5 The beverage machine shown is a side perspective view of its combined structure, including the above-mentioned extraction components and the main support frame of the embodiment of the present invention. Figure 7 This is a side perspective view of the support frame of the extraction component in an embodiment of the present invention (in the state after assembly with the second piston). Figure 8 This is a side perspective view of the first piston body according to an embodiment of the present invention from another angle; Figure 9 This is a partial longitudinal sectional view of the extraction assembly assembled on the support frame according to an embodiment of the present invention; Figure 10 This is a side perspective view of the second piston (upper piston) according to an embodiment of the present invention; Figure 11 This is a side perspective view of the raw material feeding and compression mechanism assembly according to an embodiment of the present invention; Figure 12 for Figure 11 Side perspective view of the raw material feeding component in the assembly shown; Figure 13 This is a side perspective view of the raw material compression sub-assembly according to an embodiment of the present invention; Figure 14 This is a side perspective view of the raw material compression sub-assembly from another angle in an embodiment of the present invention; Figure 15 This is a top-view side perspective view of the raw material compression sub-assembly in the raw material compression working state according to an embodiment of the present invention; Figure 16 This is a side perspective view of the cam component in the drive mechanism of an embodiment of the present invention in the first position (standby position); Figure 17 This is a side perspective view of the cam component in the drive mechanism of an embodiment of the present invention at the second position (residue discharge drive position); Figure 18 This is a side perspective view of the cam component in the drive mechanism of an embodiment of the present invention in the third position (maximum compression working position); Figure 19 This is a side perspective view of the suction assembly from one side angle according to an embodiment of the present invention; Figure 20 This is a side perspective view of the suction assembly from another angle according to an embodiment of the present invention.

[0026] In the diagram: 1. Extraction assembly; 10. Main body; 11. Sliding sleeve device; 111. Button; 12. First pipeline; 14. Positioning device; 141. Fork arm; 142. Fitting surface; 15. Indicator device; 151. Color identifier; 20. First piston; 201. Flat side; 202. Front edge; 203. Rear edge; 21. Second pipeline; 211, 212. Pipe section; 22. Piston body; 220. Mating groove; 23. Cup outlet cap; 231. Flow hole; 24. Seal; 25. Filter; 26. Screw; 3. First drive assembly; 30. Main support frame; 31. Pull rod; 35. Transmission screw; 351. Mating head; 36. Sealing plate; 37. Ejector pin; 38. Lower frame; 39. Upper edge Frame; 4. Second drive assembly; 40. Second piston; 42. Thrust support plate; 43. Gear; 44. Positioning pin; 45. Filter; 5. Raw material feeding and compression assembly; 50. Hopper; 51. Feeding section; 52. Receiving section; 521. Slide chute; 54. Drive arm; 55. Roller; 56. Compression component; 561. Main rod; 562. Compression base; 563. Lower surface; 6. Suction assembly; 60. Suction hood; 61. Suction channel; 7. Drive mechanism; 70. Cam component; 71. Bracket; 72, 73. Micro travel switch; 80. Suction area; 100. Beverage machine; 101. Raw material receiving and grinding assembly; 102. Cup dispensing assembly; 103. External frame component; 300. Residue discharge device. Detailed Implementation

[0027] To make the technical solution and advantages of the present invention clearer, the present invention and its beneficial effects will be described in further detail below with reference to specific embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0028] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0030] The following is in conjunction with the appendix Figures 1-20 This application will be described in further detail below.

[0031] In a first aspect, this application provides an extraction component for a hot beverage machine, employing the following technical solution: Reference Figures 1 to 3 The extraction component 1 in this embodiment includes a main body 10, a sliding sleeve device 11, and a first piston 20. The main body 10 has an elongated structure and is arranged along the longitudinal working axis L, preferably cylindrical. One end of the main body 10 is rotatably connected to the residue discharge device 300. The sliding sleeve device 11 is slidably sleeved on the outside of the main body 10 and can slide along the longitudinal working axis L. A first pipeline 12 is integrally formed and connected to the sliding sleeve device 11. The first pipeline 12 forms a hydraulically sealed connection with the coaxial matching pipeline of the hot beverage machine. The matching pipeline delivers the beverage to the cup dispensing assembly 102 of the hot beverage machine.

[0032] The first piston 20 has a cylindrical structure and is slidably installed inside the main body 10. The piston 20 has an integrally formed second pipe 21 for discharging finished beverages. The second pipe 21 is arranged coaxially and close to the first pipe 12, including separate and connected states. When the second pipe 21 and the first pipe 12 approach each other and connect, a hydraulic seal connection is formed, which together constitutes the outlet pipe for the finished brewed beverage.

[0033] Furthermore, referring to Figure 4The first piston 20 comprises a piston body 22, a cup-dispensing cap 23, a sealing element 24, and a filter element 25. The cup-dispensing cap 23 has a beverage flow hole 231. The sealing element 24 is preferably one or more O-rings. The filter element 25 is preferably made of stainless steel and forms the lower wall of the extraction chamber, fixed to the cup-dispensing cap 23 by screws 26. The finished beverage passes sequentially through the filter element 25, the cup-dispensing cap 23, and the pre-drilled holes or channels on the piston body 22, and is finally discharged into the second pipeline 21.

[0034] Furthermore, referring to Figure 4 The second pipe 21 is an integral structure, comprising two mutually perpendicular first pipe sections 211 and second pipe sections 212. The first pipe section 211 is connected to the piston body 22, and the second pipe section 212 is used to connect to the first pipe 12 to deliver the finished beverage.

[0035] As the first piston moves along its working axis, it switches to the following working positions: Retreat to standby position, in which the second pipe 21 is separated from the first pipe 12; In the pre-brewing intermediate position, the second pipeline 21 is separated from the first pipeline 12; Before brewing, the second pipe 21 is connected to the first pipe 12 at this position; In the secondary compression position, the first piston 20 compresses the extracted filter cake to drain residual liquid. At the residue discharge position, the first piston 20 advances further from the brewing advance position, and the residue discharge device 300 assists in scraping and discharging the raw material filter cake.

[0036] In a preferred embodiment of this application, reference is made to Figure 5 The sliding sleeve device 11 is equipped with a vertically pressing button 111. The force applied by pressing this button can directly drive the sliding sleeve device 11 to slide, thereby locking and unlocking the extraction component 1. When the sliding sleeve device 11 is in the brewing forward position, the main body 10 is locked inside the frame of the hot beverage machine; when the sliding sleeve device 11 is pushed to the retracted standby position, the main body 10 can be removed from the frame for easy cleaning, maintenance and replacement.

[0037] In a preferred embodiment of this application, reference is made to Figure 1 The main body 10 is equipped with an indicator device 15, which is a color-coded window. Users can visually check the assembly status and working position of the first piston 20 through the window. Specifically, the window can display the color markings 151 on the first piston 20, thereby reflecting the real-time position of the first piston 20.

[0038] In a preferred embodiment of this application, reference is made to Figure 3The extraction assembly also includes a positioning device 14, preferably an arc-shaped or fork-shaped structure, which is connected to the first piston 20 in a form-fitting manner. Specifically, the inner side of the fork arm 141 of the positioning device 14 is a contact surface 142, which is a flat end face. Two symmetrical flat side faces 201 are machined on the outer wall of the first piston 20, and the contact surface 142 fits into the flat side faces 201 to complete the form-fitting. The two ends of the flat side faces 201 are the front edge 202 and the rear edge 203. During the movement of the first piston 20, the fork arm 141 abuts against the front edge 202 or the rear edge 203, thereby limiting the backward and forward limits of the first piston 20 within the body 10.

[0039] Secondly, this application also provides a hot beverage machine for providing hot beverages, particularly coffee, prepared from bulk powdered ingredients, using the following technical solution: Reference Figure 5 and Figure 6 The hot beverage machine includes a frame, the extraction component 1 described above, and a second piston 40. The extraction component 1 is detachably housed within the frame. The longitudinal axis L of the extraction component 1 forms an angle of approximately 5° with the horizontal support surface of the hot beverage machine. (For illustrative purposes, this is not explicitly stated in the provided text.) Figure 5 The extraction assembly 1 is installed without a protective door; a protective door can be added in the actual product. The second piston 40 is fixedly mounted on the frame. The first piston 20 and the second piston 40 in the extraction assembly 1 cooperate to form the extraction chamber. Both the first piston 20 and the second piston 40 move in translational motion within the frame along the longitudinal axis L.

[0040] Furthermore, the frame includes a main support frame 30, a coffee bean receiving and grinding assembly 101, and a beverage dispensing assembly 102. The coffee bean receiving and grinding assembly 101 is located above the main support frame 30, and the beverage dispensing assembly 102 is located on the side of the main support frame 30.

[0041] Furthermore, referring to Figure 7 The main support frame 30 includes a lower frame 38, an upper frame 39, and multiple tie rods. The lower frame 38 and upper frame 39 are preferably polygonal structures, with the tie rods arranged along the edges of the polyhedron and extending longitudinally between the upper frame 39 and the lower frame 38 to form a box-like frame structure. In this embodiment, they are square or rectangular, and preferably four tie rods connect the upper frame 39 and the lower frame 38 as a single unit. A first piston 20 is mounted on the lower frame 38, and a second piston 40 is mounted on the upper frame 39. (Refer to...) Figure 9 The lower frame 38 is equipped with a first drive assembly 3 that cooperates with the first piston 20, and the upper frame 39 is equipped with a first drive assembly 4 that cooperates with the first piston 20. The first drive assembly 3 and the second drive assembly are preferably geared motors.

[0042] Reference Figure 8 The end face of the piston body 22 is opposite to the working end of the cup-out end cap 23. An irregularly shaped profile is machined on this end face to form a mating groove 220, which is used for surface-fitting connection with the first drive assembly 3. Specifically, refer to... Figure 9 The transmission screw 35 of the first drive assembly 3 is connected to a non-circular mating head 351 at its end. The non-circular mating head 351 is embedded in the mating groove 220 of the first piston 20 to realize power transmission.

[0043] Reference Figure 10 The second piston 40 is mounted on the upper frame 39 of the main support frame 30. A filter element 45 is provided at the end of the second piston 40 facing the first piston 20. The filter element 45 has the same specifications as the filter element 25 of the first piston 20. The filter element 45 forms the upper wall of the extraction chamber, and the filter element 25 of the first piston 20 forms the lower wall of the extraction chamber. The internal space of the main body 10, together with the first piston 20 and the second piston 40, forms the cavity of the extraction chamber. The second piston 40 is connected to the drive gear 43 of the second drive assembly 4, which is fixedly mounted on the upper frame 39. A thrust support plate 42 is also connected to the second piston 40. The thrust support plate 42 is preferably made of brass. A positioning pin 44 is installed in the slot of the thrust support plate 42. The positioning pin 44 is fixedly connected to the main support frame 30 and is used to transmit thrust.

[0044] Reference Figure 9 The main support frame 30 is also provided with a sealing disc 36 that cooperates with the first piston 20 and a sealing disc 42 that cooperates with the second piston 40. The sealing disc 36 abuts against the end of the first piston 20, and the sealing disc 42 abuts against the end of the second piston 40. The main support frame 30 is also provided with a ejector pin 37 and an ejector pin 44. The ejector pin 37 is connected to the sealing disc 36, and the ejector pin 44 is connected to the sealing disc 42. The ejector pin 37 is fixedly connected to the lower frame 38, and the ejector pin 44 is fixedly connected to the upper frame 39. The main support frame 30 is a frame-type box-shaped reinforced structure, which can distribute the thrust of the first drive assembly 3 and the second drive assembly 4, as well as the extraction pressure generated by the water pump, to the sealing discs 36 and 42. The sealing discs 36 and 42 then transmit the force to the lower frame 38 and the upper frame 39 through the ejector pins 37 and 44. The lower frame 38 and the upper frame 39 are fixed together by stainless steel tie rods 31-34, which improves the mechanical strength of the whole machine, while retaining the detachable design of the extraction assembly 1, taking into account both practicality and durability. The preferred operating pressure of the water pump is approximately 19-35 bar.

[0045] Reference Figures 11 to 15The hot beverage machine also includes a raw material feeding and compression assembly 5, which is mounted on the main support frame 30 and corresponds to the feeding end of the extraction component 1. The raw material feeding and compression assembly 5 includes a shaped hopper 50, a compressor 56, a drive arm 54, and a cam component 70. The hopper 50 is a one-piece structure, including a funnel-shaped feeding section 51 and a compressor receiving section 52, within which the compressor 56 can slide. A groove 521 is formed on the side wall of the compressor receiving section 52, through which the drive arm 54 passes and connects to the compressor 56. The compressor 56 is an L-shaped one-piece structure, including a main rod 561 and a compression base 562. A roller 55 is mounted on the end of the drive arm 54, and the roller 55 is in contact with the upper surface 564 of the compression base 562. The roller 55 rolls parallel to the surface of the compression base 562, reducing friction and facilitating the compression base 562 to push coffee powder into the extraction chamber. The lower surface 563 of the compression base 562 can be designed as a concave arc shape. The arc shape of the lower surface 563, together with the first piston 20, the second piston 40 and the frame, forms the lateral boundary of the extraction chamber.

[0046] Reference Figure 13 , Figure 16 , Figure 17 and Figure 18 The raw material feeding and compression assembly 5 also includes a cam component 70 that cooperates with the drive arm 54. The cam component 70 is connected to an asynchronous motor or other drive device to drive the drive arm 54 to reciprocate. The cam component 70 has three working positions: the first position is the standby position, corresponding to the standby state of the entire hot beverage machine; the second position is the residue discharge drive position, used to drive the residue discharge device 300 to work; and the third position is the maximum compression working position, which holds the drive arm 54 in the downward pressure position to realize the compression of coffee powder and the sealing of the extraction chamber. The position of the cam component 70 is synchronized by micro-stroke switches 72 and 73, which are mounted on the bracket 71 and triggered by the body of the cam component 70 to achieve precise position detection and linkage.

[0047] Reference Figure 19 and Figure 20 The hot beverage machine also includes a suction assembly 6, which is mounted on the main support frame 30 and corresponds to the residue discharge position of the extraction component 1. The suction assembly 6 includes a suction hood 60 and a suction channel 61. The suction hood 60 is connected to a fan, which is connected to the suction channel 61. The fan can be driven by an independent motor or share a drive motor with other components of the hot beverage machine. After the brewing cycle is completed, when the second piston 40 retracts, the suction assembly 6 immediately starts to suction the area 80 above the first piston 20, promptly removing steam, moisture, and powder from the area 80.

[0048] Reference Figure 2 and Figure 17The residue discharge device 300 has an arc-shaped arm or hook-shaped structure. It is rotatably connected to one end of the main body 10 and rotates about a rotation axis parallel to the longitudinal axis L. It is installed at the end of the main body 10 of the extraction assembly 1, corresponding to the residue discharge position of the first piston 20. In this embodiment, the residue discharge device 300 is driven by the cam component 70. When the cam component 70 switches to the second position, it drives the residue discharge device 300 to work, switching it between a standby position and a rotating working position. During the position switching process, it scrapes the upper surface of the first piston 20, completing the scraping and discharge of the raw material filter cake.

[0049] The application process and implementation principle of this application embodiment: Coffee powder is quantitatively fed into the extraction chamber via the raw material feeding and compression assembly 5. The first piston 20, driven by the first drive assembly 3, sequentially switches to the retracted standby position, the pre-brewing intermediate position, the brewing forward position, the secondary compression position, and the residue discharge position. The second piston 40, driven by the second drive assembly 4, cooperates in the operation, completing the automatic cycle of raw material receiving, extraction, residue discharge, and resetting. The suction assembly 6 promptly removes residual steam and powder after each brewing cycle to keep the interior clean.

[0050] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. An extraction component for a hot beverage machine, characterized in that, include: The main body (10) is elongated along the longitudinal working axis (L), and a residue discharge device (300) is rotatably connected to one end of the main body (10). A sliding sleeve device (11) is slidably sleeved on the main body (10) and slides along the longitudinal working axis (L). A first pipeline (12) is provided on the sliding sleeve device (11). A first piston (20) is slidably disposed within the body (10), and a second pipe (21) is disposed on the first piston; the second pipe (21) is configured to form a fluid connection with the first pipe (12) to form a hydraulic seal; The first piston (20) is configured to be able to switch to at least the following working positions along its working axis (L): Retreat to standby position, in which the second pipeline (21) is separated from the first pipeline (12); Before brewing, the second pipe (21) is connected to the first pipe (12) at this position; At the residue discharge position, the first piston (20) advances further from the brewing advance position, and the residue discharge device (300) assists in scraping and discharging the raw material filter cake.

2. The extraction component for a hot beverage machine according to claim 1, characterized in that, Between the retracted standby position and the brewing advance position, there is also a pre-brewing intermediate position, in which the second pipeline (21) is separated from the first pipeline (12).

3. The extraction component for a hot beverage machine according to claim 1, characterized in that, The first piston (20) is also configured to switch between the brewing advance position and the residue discharge position to a secondary compression position, in which the first piston (20) compresses the extracted raw material filter cake to drain the residual liquid.

4. An extraction component for a hot beverage machine according to claim 1, characterized in that, It also includes a fork-shaped positioning device (14), which uses a form-fitting structure to confine the first piston (20) within the body (10) and limit the stroke of the first piston (20).

5. An extraction component for a hot beverage machine according to claim 1, characterized in that, The first piston (20) is provided with an indicator (15), which is used to allow the user to visually view the position of the piston.

6. A hot beverage machine for providing hot beverages prepared by brewing bulk powdered ingredients, characterized in that, include: frame; An extraction component for a hot beverage machine as described in any one of claims 1 to 5. The second piston (40) works in conjunction with the first piston (20), and an extraction chamber is formed between the first piston (20) and the second piston (40).

7. A hot beverage machine according to claim 6, characterized in that, The extraction component (1) is detachably housed within the frame (2) of the hot beverage machine.

8. A hot beverage machine according to claim 6, characterized in that, It also includes a suction assembly (6) configured to remove steam and powder at the end of the extraction cycle and to operate in the area of ​​the hot beverage machine (100) corresponding to the residue discharge position of the first piston (20).

9. A hot beverage machine according to claim 6, characterized in that, It also includes a compression assembly (5) configured to convey and compact powder material between the first piston (20) and the second piston (40); the compression assembly 5 includes a cam device (70), a drive arm (54) selectively driven by the cam device (70), and a compressor (56) acting on the powder material.

10. A hot beverage machine according to claim 9, characterized in that, The compression component (56) is an L-shaped integrated structure, including a main rod (561) and a compression base (562). The end of the drive arm (54) is equipped with a roller (55), and the roller (55) is in contact with the upper surface (564) of the compression base (562).

11. A hot beverage machine according to claim 10, characterized in that, The lower surface (563) of the compression base (562) is concave arc-shaped, and the arc-shaped contour of the lower surface (563) together with the first piston (20), the second piston (40) and the frame form the lateral boundary of the extraction chamber.

12. A hot beverage machine according to claim 9, characterized in that, The cam device (70) is also configured to drive the movable residue cake discharge device (300) to operate.

13. A hot beverage machine according to claim 6, characterized in that, It also includes a main support frame (30), which includes an upper frame (39), a lower frame (38) and multiple tie rods (31), which extend longitudinally and are fixedly connected between the upper frame (39) and the lower frame (38).

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