Brewing device

Abstract

The utility model discloses a brewing device. The brewing device comprises a support; the driving mechanism is arranged on the bracket; the brewing cylinder is in transmission connection with the driving mechanism, the driving mechanism is used for driving the brewing cylinder to move along the first axis or rotate around the first axis, and the brewing cylinder comprises a brewing chamber with a filling opening; the upper piston moves relative to the brewing cylinder along a first axis; the lower piston is movably connected to the brewing chamber, and the lower piston is provided with a slag jacking position; the limiting piece comprises a pivoting part and a cantilever, the pivoting part is rotationally connected with the support, and an elastic element is arranged between the cantilever and the support; the lower piston abuts against the cantilever to enable the elastic element to deform, and then the cantilever avoids rotation of the lower piston. The brewing cylinder moves away from the upper piston along the first axis, the elastic element resets to enable the cantilever to abut against the lower piston along the first axis, and then the lower piston moves to the slag ejecting position under the abutting pressure of the cantilever. And the limiting piece is arranged, the automatic avoiding and slag jacking functions of the lower piston are achieved, and the structure is simple and stable.

Description

Technical Field

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

[0002] In the field of existing beverage machine technology, such as tea beverage extraction equipment and coffee extraction equipment, taking coffee extraction equipment as an example, the main components of a coffee extraction or brewing device include upper and lower pistons, and a brewing cylinder with a brewing chamber. During the brewing process, hot water under pressure brews coffee powder to form a coffee beverage, which is then discharged through an outlet pipe. After brewing, coffee grounds need to be removed for the next brewing.

[0003] In related technologies, the lower piston, installed inside the brewing cylinder, pushes coffee grounds out of the brewing chamber through relative movement with the brewing cylinder. To achieve this relative movement, the lower piston is axially movable within the brewing cylinder. The relative movement positions of the lower piston and the brewing cylinder are set with upper and lower limits. When the lower piston is at the upper limit position relative to the brewing cylinder, its upper surface is basically flush with the upper end of the brewing cylinder, thus completing the removal of coffee grounds. When the lower piston moves to the bottom of the brewing cylinder, at its maximum volume, it is at the lower limit position relative to the brewing cylinder, allowing it to accommodate coffee grounds.

[0004] However, the movement of the lower piston requires an additional drive mechanism, and the top ash and clearance require additional control or drive. Alternatively, the top ash structure may be extremely complex, which not only increases the number of mechanical parts in the brewing device, making its structure relatively complex, but also makes it prone to mechanical failures and reduces the operational stability of the brewing device. Utility Model Content

[0005] The purpose of this invention is to provide a brewing device that is stable in operation and has a simple structure.

[0006] To achieve the above-mentioned utility model objectives, this utility model provides a brewing device, comprising:

[0007] support;

[0008] The drive mechanism is disposed on the bracket;

[0009] A brewing cylinder is connected to the drive mechanism, which is used to drive the brewing cylinder to move along or rotate around the first axis. The brewing cylinder includes a brewing chamber with a filling opening.

[0010] The upper piston moves relative to the brewing cylinder along the first axis to selectively close the brewing chamber from above the filling opening;

[0011] The lower piston is movably engaged with the brewing chamber, and the lower piston has a top residue position that pushes the powder residue in the brewing chamber out of the filling opening.

[0012] It also includes a limiting member, which includes a pivot and a cantilever. The pivot is rotatably connected to the support, and an elastic element is provided between the cantilever and the support. The lower piston presses against the cantilever to deform the elastic element, thereby causing the cantilever to avoid the rotation of the lower piston. The brewing cylinder moves away from the upper piston along the first axis, and the elastic element resets to make the cantilever abut against the lower piston along the first axis, thereby causing the lower piston to move to the top slag position under the pressure of the cantilever.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a limiting component, the automatic avoidance of the lower piston and the slag removal function are realized, without the need for complex control logic and additional drive devices, which simplifies the structure and reduces costs.

[0014] As a further improvement of one embodiment of this utility model, on the rotation path of the brewing cylinder around the first axis, the brewing cylinder has a central position and an offset position corresponding to the upper piston along the first axis. During the process of the brewing cylinder rotating from the offset position to the central position:

[0015] The lower piston presses against the arc-shaped segment, and the cantilever includes the arc-shaped segment; or,

[0016] The lower piston moves along the cantilever from the engagement end toward the free end. The cantilever includes the engagement end connecting the pivot and the free end, with the engagement end and the free end being disposed opposite each other.

[0017] As a further improvement of one embodiment of the present invention, the bottom of the brewing cylinder is provided with a water inlet pipe, which is connected to the brewing chamber. On the rotation path of the brewing cylinder around the first axis, the brewing cylinder has a central position and an off-center position corresponding to the upper piston along the first axis. During the process of the brewing cylinder rotating from the off-center position to the central position, the water inlet pipe presses against the cantilever to deform the elastic element.

[0018] As a further improvement of one embodiment of the present invention, during the process of the brewing cylinder rotating from the center position to the offset position, the lower piston moves away from the filling opening relative to the brewing cylinder under the action of its own gravity.

[0019] As a further improvement of one embodiment of the present utility model, the driving mechanism includes a screw, a spiral sleeve is fixedly connected to the brewing cylinder, the spiral sleeve is drivenly connected to the screw, the screw defines the first axis, and the axial direction of the pivot part is parallel to the first axis;

[0020] On the rotation path of the brewing cylinder around the first axis, the brewing cylinder has a central position and an offset position corresponding to the upper piston along the first axis, and the pivot portion is offset toward the offset position relative to the central position.

[0021] As a further improvement of one embodiment of the present invention, the free end of the cantilever and the pivot part are respectively disposed at both ends of the limiting member, the elastic element is disposed between the free end of the cantilever and the bracket, and the free end uses the pivot part as the swing fulcrum.

[0022] As a further improvement of one embodiment of the present invention, the free end is provided with a first protrusion facing the bracket, the bracket is provided with a second protrusion, and the two ends of the elastic element are respectively sleeved on the first protrusion and the second protrusion, and the protrusion height of the first protrusion is greater than the protrusion height of the second protrusion.

[0023] As a further improvement of one embodiment of the present invention, the pivot part includes a pin and a support plate bent relative to the cantilever, the cantilever and the pin being located on the same side of the support plate; the bracket is provided with a pin groove, the pin groove having an opening, the pin being inserted into the pin groove from the opening, and the pin being rotatably connected to the pin groove.

[0024] As a further improvement of one embodiment of the present utility model, the bracket is provided with a through groove, the pivot part is connected to the bracket on the inner side of the through groove, and the free end of the cantilever extends from the inner side of the through groove to the outer side of the through groove.

[0025] Along two directions orthogonal to the axis of the pivot, the cantilever extends smoothly from the inside of the through groove to the outside. As the brewing cylinder rotates around the first axis, driving the lower piston to press against the cantilever, the force applied by the lower piston to the elastic element gradually increases.

[0026] As a further improvement of one embodiment of the present invention, the upper piston is connected to the driving mechanism, and the driving mechanism drives the upper piston and the brewing cylinder to move in opposite directions along the first axis at the same time. Attached Figure Description

[0027] Figure 1This is a schematic diagram of a brewing device according to one embodiment of the present invention, wherein the brewing cylinder is located in the center position.

[0028] Figure 2 yes Figure 1 A bottom view of the brewing device.

[0029] Figure 3 yes Figure 1 A partial schematic diagram of the brewing device.

[0030] Figure 4 It is along Figure 2 Schematic diagram of the cross section along line AA.

[0031] Figure 5 yes Figure 1 A schematic diagram of the brewing device, in which the brewing cylinder is in an off-center position.

[0032] Figure 6 It is along Figure 5 A partial cross-sectional view of the middle BB line.

[0033] Figure 7 yes Figure 1 A bottom view of the brewing device, in which the lower piston presses against the cantilever.

[0034] Figure 8 It is along Figure 7 Cross-sectional view of the CC line.

[0035] Figure 9 yes Figure 8 The diagram shows the brewing chamber of the brewing device in a closed state, with the lower piston abutting against the cantilever along the first axis. Detailed Implementation

[0036] 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 protection scope of the present invention.

[0037] 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.

[0038] The brewing device 100 in this specific embodiment of the present invention will be described as an example of a brewing device 100 capable of brewing coffee granules. (Refer to...) Figures 1 to 4As shown, in this embodiment, the brewing device 100 includes a support 30, a drive mechanism 20, and a brewing cylinder 41. The drive mechanism 20 is disposed on the support 30. The brewing cylinder 41 is connected to the drive mechanism 20 for transmission. The drive mechanism 20 is used to drive the brewing cylinder 41 to move along the first axis Y or rotate around the first axis Y. The brewing cylinder 41 includes a brewing chamber 411 with a filling opening 412.

[0039] The support frame 30 is used to carry and support the drive mechanism 20 and other functional components of the brewing device 100, and to ensure the relative position of each component is stable and reliable. The brewing chamber 411 is a space for containing powder and brewing the powder. The filling opening 412 is the opening of the brewing chamber 411, used for filling powder and discharging powder cake residue 60.

[0040] The brewing device 100 also includes an upper piston 42 and a lower piston 43. The upper piston 42 moves relative to the brewing cylinder 41 along a first axis Y to selectively close the brewing chamber 411 from above the filling opening 412. The lower piston 43 is movably engaged with the brewing chamber 411 and has a top position for pushing the powder residue 60 in the brewing chamber 411 out of the filling opening 412.

[0041] The upper piston 42 is configured to move relative to the brewing cylinder 41 along the first axis Y, thereby sealing the filling opening 412. This relative movement between the upper piston 42 and the brewing cylinder 41 compacts the powder in the brewing chamber 411, ensuring a uniform and dense powder cake, and guaranteeing a balanced and consistent flavor extraction in the beverage. This relative movement also allows for flexible adjustment of the volume of the brewing chamber 411 during the brewing process, thus precisely controlling the powder extraction effect. This relative movement can be the upper piston 42 moving alone relative to the support 30 along the first axis Y, or the brewing cylinder 41 moving alone relative to the support 30 along the first axis Y, or the upper piston 42 and the brewing cylinder 41 moving synchronously or sequentially relative to the support 30 along the first axis Y.

[0042] The lower piston 43 is movably engaged with the brewing chamber 411. At the top residue position, the lower piston 43 pushes the powder residue in the brewing chamber 411 out through the filling opening 412, thereby discharging the powder residue for the next beverage preparation. The movement of the lower piston 43 relative to the brewing cylinder 41 can also be used to compact the powder in the brewing chamber 411 or adjust the volume of the brewing chamber 411. The movement of the lower piston 43 relative to the brewing cylinder 41 can be as follows: the lower piston 43 moves solely relative to the support 30 while the brewing cylinder 41 is fixed relative to the support 30; the brewing cylinder 41 moves solely relative to the support 30 while the lower piston 43 is fixed relative to the support 30; or the lower piston 43 and the brewing cylinder 41 move synchronously or sequentially relative to the support 30.

[0043] Reference Figures 2 to 4 The brewing device 100 also includes a limiting member 50, which includes a pivot portion 51 and a cantilever 52. The pivot portion 51 is rotatably connected to the support 30, and an elastic element 53 is disposed between the cantilever 52 and the support 30. The lower piston 43 presses against the cantilever 52 to deform the elastic element 53, thereby causing the cantilever 52 to avoid the rotation of the lower piston 43. The brewing cylinder 41 moves away from the upper piston 42 along the first axis Y, and the elastic element 53 resets so that the cantilever 52 abuts against the lower piston 43 along the first axis Y, thereby causing the lower piston 43 to move to the top slag position under the pressure of the cantilever 52.

[0044] In the aforementioned brewing device 100, the drive mechanism 20 can drive the brewing cylinder 41 to move along or rotate around the first axis Y. When the upper piston 42 moves along the first axis Y above the filling opening 412, it can close the brewing chamber 411, forming a sealed brewing space. The lower piston 43 moves within the brewing chamber 411 and can move upwards to the top residue position, pushing the brewed powder residue 60 out of the brewing chamber 411. During the rotation of the brewing cylinder 41 from a position away from the cantilever 52 towards the cantilever 52, the lower piston 43 will press against the cantilever 52, causing the elastic element 53 to deform and the cantilever 52 to rotate, thus making room for the lower piston 43. When the brewing cylinder 41 moves away from the upper piston 42 along the first axis Y, the elastic element 53 returns to its original shape, the cantilever 52 resets, and the reset cantilever 52 presses against the lower piston 43, pushing it to the top residue position.

[0045] The design of the limiting component 50 and the elastic element 53 enables the automatic avoidance of the lower piston 43 and assists the lower piston 43 in slag removal. It eliminates the need for complex control logic and additional drive devices, simplifies the structure, reduces costs, and occupies less space overall.

[0046] During the operation of the brewing device 100, when the brewing cylinder 41 drives the lower piston 43 to rotate to the position of receiving powder and then rotates back, the lower piston 43 will squeeze the limiting member 50. At this time, the elastic element 53 is compressed, and the limiting member 50 makes way for the lower piston 43 to prevent the lower piston 43 from interfering with the limiting member 50 during the process of the brewing cylinder 41 rotating to the position of receiving powder and then rotating back.

[0047] When the brewing cylinder 41 moves closer to the upper piston 42 along the first axis Y, the lower piston 43 releases its pressure on the cantilever 52, and the elastic element 53 drives the cantilever 52 to reset. When the brewing cylinder 41 moves away from the upper piston 42 along the first axis Y, the cantilever 52 has already reset. During the process of the brewing cylinder 41 moving away from the upper piston 42 along the first axis Y, the cantilever 52 abuts against the lower piston 43 along the first axis Y, so that the lower piston 43 moves relative to the brewing cylinder 41 to the top slag position under the pressure of the cantilever 52, thereby realizing the automatic cleaning of the powder slag 60.

[0048] The brewing device 100 solves the problem of inconvenient cleaning of powder residue 60 through the ingenious cooperation of the limiting member 50 and the elastic element 53. At the same time, the brewing cylinder 41 can rotate to receive powder, making the structure of the brewing device 100 more compact, optimizing the mechanical movement path, and reducing the overall height of the brewing device 100.

[0049] In one embodiment, along the rotational path of the brewing cylinder 41 about the first axis Y, the brewing cylinder 41 has a central position and an off-center position corresponding to the upper piston 42 along the first axis Y. During the rotation of the brewing cylinder 41 from the off-center position to the central position, the lower piston 43 presses against the arc-shaped segment 521. The cantilever 52 includes the arc-shaped segment 521.

[0050] In one embodiment, on the rotation path of the brewing cylinder 41 around the first axis Y, the brewing cylinder 41 has a central position and an off-center position corresponding to the upper piston 42 along the first axis Y. During the rotation of the brewing cylinder 41 from the off-center position to the central position, the lower piston 43 moves along the cantilever 52 from the engagement end 522 toward the free end 523. The cantilever 52 includes an engagement end 522 connecting the pivot part 51 and a free end 523, with the engagement end 522 and the free end 523 arranged opposite to each other.

[0051] Specifically, during the operation of the brewing device 100, the brewing cylinder 41 will swing on a rotational path around the first axis Y, which has two positions: a central position and an off-center position.

[0052] Reference Figure 1 and Figure 4 The center position refers to the position of the brewing tank 41 and the upper piston 42 along the first axis Y, which is usually the position for pressing and brewing powder.

[0053] Reference Figure 5 and Figure 6 The deviation position is the position of the brewing tank 41 off the first axis Y, which is usually the position when receiving powder.

[0054] During the process of the brewing tank 41 rotating from the off-center position to the center position, two different structural schemes can be adopted according to specific design requirements: one is that the lower piston 43 presses against the arc-shaped section 521 of the cantilever 52; the other is that the lower piston 43 moves along the cantilever 52 from the joint end 522 toward the free end 523.

[0055] Here, the connecting end 522 refers to the end that connects to the pivot part 51, while the free end 523 is disposed opposite to the connecting end 522, and the body part of the cantilever 52 is formed between the two ends.

[0056] When the arc segment 521 is designed, the arc segment 521 on the cantilever 52 provides a smooth pressing surface for the lower piston 43, so that the lower piston 43 can move smoothly during the rotation driven by the brewing cylinder 41, reducing friction and wear.

[0057] When the movement scheme from the engagement end 522 to the free end 523 is adopted, the contact point between the lower piston 43 and the cantilever 52 will change as the brewing cylinder 41 rotates, gradually moving from the engagement end 522 to the free end 523. This design can also ensure the smooth movement of the lower piston 43.

[0058] Both design schemes optimize the contact process between the lower piston 43 and the cantilever 52, reduce friction and wear between components, and extend the service life of the equipment.

[0059] At the same time, this design also ensures that the position of the lower piston 43 can be precisely controlled during the rotation of the brewing tank 41, thereby ensuring the smooth progress of the brewing and top residue processes.

[0060] In one embodiment, the bottom of the brewing cylinder 41 is provided with a water inlet pipe 45, which connects to the brewing chamber 411. On the rotation path of the brewing cylinder 41 around the first axis Y, the brewing cylinder 41 has a central position and an off-center position corresponding to the upper piston 42 along the first axis Y. During the process of the brewing cylinder 41 rotating from the off-center position to the central position, the water inlet pipe 45 presses against the cantilever 52 to deform the elastic element 53.

[0061] It should be noted that when the cantilever 52 is squeezed by the lower piston 43, the elastic element 53 deforms. The deformation of the elastic element 53 absorbs the squeezing force, and the cantilever 52 rotates and swings to make way for the lower piston 43. The cantilever 52 itself does not deform. This design ensures the stability and durability of the cantilever 52.

[0062] The water inlet pipe 45 allows hot water to be conveniently supplied to the brewing chamber 411 for coffee brewing.

[0063] The water inlet pipe 45 is located at the bottom of the brewing tank 41 and is directly connected to the brewing chamber 411, ensuring that the water flow can pass through the powder evenly and improve the brewing effect.

[0064] In particular, the water inlet pipe 45 also plays an additional role during the rotation of the brewing cylinder 41. When the brewing cylinder 41 rotates from the off-center position to the center position, the water inlet pipe 45 will assist in pressing against the cantilever 52, causing the elastic element 53 to deform.

[0065] This design cleverly utilizes the position of the water inlet pipe 45 to avoid interference of the cantilever 52 with the rotation of the brewing cylinder 41, and reduces the reaction force on the lower piston 43 against the cantilever 52, so as to ensure that the lower piston 43 is kept in a reliable position. At the same time, it simplifies the overall structure, enabling one component to perform multiple functions and reducing the number of parts.

[0066] In one embodiment, as the brewing cylinder 41 rotates from the center position to the offset position, the lower piston 43 moves away from the filling opening 412 relative to the brewing cylinder 41 under its own gravity.

[0067] This design makes full use of the lower piston 43's own weight, allowing it to automatically adjust its position during the rotation of the brewing tank 41. This automatic position adjustment design simplifies the drive control of the lower piston and streamlines the operation process.

[0068] Specifically, when the brewing cylinder 41 rotates from the central position (i.e., the powder-pressing and brewing position corresponding to the upper piston 42) to the offset position (i.e., the powder-receiving position), after the cantilever 52 releases its contact with the lower piston 43, the lower piston 43 will move downward relative to the brewing cylinder 41 under its own gravity. That is, the lower piston 43 moves away from the filling opening 412 relative to the brewing cylinder 41 to expand the volume of the brewing chamber 411, making it easier to receive powder for the next beverage. When the brewing cylinder 41 rotates from the offset position to the central position, the lower piston 43 presses against the cantilever 52 as the brewing cylinder 41 rotates. When the elastic element 53 resets, the cantilever 52 abuts against the lower piston 43 along the first axis Y, and the lower piston 43 cannot move downward with the brewing cylinder 41 to automatically move relative to the brewing cylinder 41 to the top residue position.

[0069] This automatic adjustment mechanism eliminates the need for an additional power source, simplifies control logic, reduces energy consumption and component wear, and extends equipment lifespan. Furthermore, this design allows all components of the brewing device 100 to work in coordination, achieving automated brewing and top-dreg processes.

[0070] In one embodiment, the drive mechanism 20 includes a screw 21, a spiral sleeve 415 is fixedly connected to the brewing cylinder 41, the spiral sleeve 415 is drively connected to the screw 21, the screw 21 defines a first axis Y, and the axis of the pivot portion 51 is parallel to the first axis Y.

[0071] On the rotation path of the brewing cylinder 41 around the first axis Y, the brewing cylinder 41 has a central position and an off-center position corresponding to the upper piston 42 along the first axis Y. The pivot part 51 is offset toward the off-center position relative to the central position.

[0072] As the core component of the drive mechanism 20, the screw 21 defines the first axis Y, providing a stable reference for the movement and rotation of the brewing cylinder 41. The rotation of the screw 21 drives the spiral sleeve 415, enabling the brewing cylinder 41 to move or rotate smoothly along the first axis Y. This ensures the stability of the brewing cylinder 41 during movement and rotation, and also makes the brewing process more precise and controllable.

[0073] The spiral sleeve 415 fixedly connected to the brewing cylinder 41 forms a transmission connection with the screw 21. The rotation of the screw 21 drives the brewing cylinder 41 to move along the first axis Y or rotate around the first axis Y.

[0074] This transmission method has a compact structure, high transmission efficiency, and can accurately control the position and movement of the brewing cylinder 41.

[0075] In particular, the axis of the pivot 51 is arranged parallel to the first axis Y, which ensures the stability and reliability of the operation of the limiting member 50.

[0076] Meanwhile, the pivot 51 is offset from the center position of the brewing tank 41. This offset design optimizes space utilization, makes the swing range of the cantilever 52 more reasonable, and ensures that the limiting member 50 can work normally in different positions of the brewing tank 41.

[0077] The brewing device 100 achieves smooth movement and rotation of the brewing cylinder 41 by using a transmission method of screw 21 and spiral sleeve 415, as well as an offset design of pivot 51, thereby improving the stability and controllability of the brewing process.

[0078] In one embodiment, the support 30 includes a first side plate 31 and a second side plate 32. The first side plate 31 and the second side plate 32 restrict the rotational freedom of the upper piston 42 and the brewing cylinder 41, and provide support and mounting base for other components of the brewing device 100. A screw 21 is disposed between the first side plate 31 and the second side plate 32, i.e., the screw 21 is located inside the second side plate 32. A powder channel 25 is provided on the outer side of the second side plate 32, and a clearance opening 26 is provided below the second side plate 32. The clearance opening 26 allows the brewing cylinder 41 to rotate toward the powder channel 25. The brewing cylinder 41 rotates around a first axis Y through the clearance opening 26, enabling the filling opening 412 of the brewing cylinder 41 to align with the powder channel 25 to receive powder from the powder channel 25 and reset.

[0079] In one embodiment, the free end 523 and the pivot portion 51 of the cantilever 52 are respectively disposed at both ends of the limiting member 50, and the elastic element 53 is disposed between the free end 523 of the cantilever 52 and the bracket 30, with the pivot portion 51 serving as the swing fulcrum of the free end 523.

[0080] During the process of the lower piston 43 pressing against the cantilever 52, the free end 523 of the cantilever 52 rotates with the pivot 51 as the swing fulcrum. The free end 523 compresses the elastic element 53 to deform. The direction of the pressure of the lower piston 43 on the cantilever 52 is different from the direction of the elastic force on the free end 523. The lower piston 43 experiences less resistance from the cantilever 52, making it easier to drive the cantilever 52 to rotate. At the same time, the cantilever 52 does not prevent the lower piston 43 from rotating with the brewing cylinder 41, so that the brewing cylinder 41 can be reset more reliably from the powder receiving position.

[0081] The deformation of the elastic element 53 can be adjusted according to the pressure of the lower piston 43 on the cantilever 52, thereby achieving a buffering and stabilizing effect on the movement of the lower piston 43. When the pressure of the lower piston 43 is removed, the elastic element 53 can drive the free end 523 of the cantilever 52 to return to its original shape, preparing for the subsequent contact and limiting movement of the lower piston 43. This design not only improves the movement stability and reliability of the brewing device 100, but also effectively extends the service life of each component.

[0082] Reference Figure 6 In one embodiment, the free end 523 is provided with a first protrusion 525 facing the bracket 30, the bracket 30 is provided with a second protrusion 335, and the two ends of the elastic element 53 are respectively sleeved on the first protrusion 525 and the second protrusion 335. The protrusion height of the first protrusion 525 is greater than the protrusion height of the second protrusion 335.

[0083] The elastic element 53 is sleeved on the first protrusion 525 and the second protrusion 335, which facilitates the positioning of the elastic element 53. In addition, it can limit the rotation stroke of the cantilever 52, ensuring that the cantilever 52 makes more reliable clearance to the lower piston 43 and the cantilever 52 presses against the lower piston 43 after resetting.

[0084] In this embodiment, the elastic element 53 can be a compression spring, with one end abutting against the bracket 30 and the other end abutting against the cantilever 52. Alternatively, the elastic element 53 can be a torsion spring, sleeved on the pivot portion 51, with one end abutting against the bracket 30 and the other end abutting against the cantilever 52. Or, the elastic element 53 can also be a tension spring, with one end connected to the bracket 30 and the other end connected to the cantilever 52. These different configurations of the elastic element 53 all achieve the elastic reset function of the cantilever 52.

[0085] Different configurations of the elastic element 53 provide flexible options for the actual structure, and can be optimized based on factors such as structural space, required elastic force, and manufacturing cost.

[0086] In one embodiment, the pivot 51 includes a pin 511 and a support plate 512 bent relative to the cantilever 52, the cantilever 52 and the pin 511 being located on the same side of the support plate 512. Please refer to... Figure 3The bracket 30 is provided with a pin groove 332, which has an opening 333. The pin 511 is inserted into the pin groove 332 from the opening 333. The pin 511 is rotatably connected to the pin groove 332, providing rotational support for the pivot part 51 of the limiting member 50.

[0087] The structural design of the pivot part 51 facilitates the connection between the limiting member 50 and the bracket 30. Furthermore, the cooperation between the pin 511 and the pin groove 332 further limits the rotation of the cantilever 52 with the pivot part 51 as the swing fulcrum, i.e., the cantilever 52 within a preset range, thereby ensuring the efficient movement of the cantilever 52 in a limited space.

[0088] In one embodiment, the bracket 30 is further provided with a through groove 34, the pivot part 51 is connected to the bracket 30 on the inner side of the through groove 34, and the free end 523 of the cantilever 52 extends from the inner side of the through groove 34 to the outer side of the through groove 34.

[0089] Along two directions orthogonal to the axis of the pivot 51, the cantilever 52 extends smoothly from the inside of the through groove 34 to the outside. As the brewing cylinder 41 rotates around the first axis Y, driving the lower piston 43 to press against the cantilever 52, the force applied by the lower piston 43 to the elastic element 53 gradually increases.

[0090] The cantilever 52 passes through the through slot 34 and extends smoothly outward in two directions orthogonal to the axis of the pivot 51. As the lower piston 43 rotates and resets from the powder receiving position with the brewing cylinder 41, both the lower piston 43 and the cantilever 52 can smoothly and reliably transition to their respective positions without any impact during the movement, thus extending the service life of the components and reducing maintenance costs.

[0091] The through-slot 34 design of the bracket 30 not only allows for smooth movement of the cantilever 52, but also ensures the stability of the cantilever 52 under the pressure of the lower piston 43 through its structural features. The edges of the through-slot 34 are finely processed to prevent friction between the cantilever 52 and the slot during movement, thereby reducing wear and ensuring the smoothness and precision of the cantilever 52's movement.

[0092] During the rotation of the brewing tank 41, the contact point between the lower piston 43 and the cantilever 52 gradually changes with the extension direction of the cantilever 52. This design allows the pressure applied by the lower piston 43 to be evenly distributed on the cantilever 52, avoiding damage caused by excessive local pressure.

[0093] The design of the support 30 and cantilever 52 of the brewing device 100 also takes into account the need for easy maintenance and replacement. When it is necessary to replace the cantilever 52 or the elastic element 53, the replacement operation can be carried out simply by removing the cantilever 52 from the through slot 34, without disassembling the entire brewing device 100, which greatly saves maintenance time and costs.

[0094] In one embodiment, the upper piston 42 is connected to the drive mechanism 20, and the drive mechanism 20 drives the upper piston 42 and the brewing cylinder 41 to move in opposite directions along the first axis Y at the same time.

[0095] The transmission connection between the upper piston 42 and the drive mechanism 20 enables the coordinated operation of the brewing cylinder 41 and the upper piston 42.

[0096] Specifically, the drive mechanism 20 includes a screw 21 with threaded portions having different directions of rotation. The upper piston 42 and the brewing cylinder 41 are respectively connected to the threaded portions with different directions of rotation. This design allows the screw 21 to simultaneously drive the brewing cylinder 41 and the upper piston 42 to move in opposite directions when rotating, greatly improving work efficiency.

[0097] As the brewing cylinder 41 moves from the powder receiving position to the powder pressing and brewing position, the upper piston 42 moves downward due to the reverse double-threaded design of the screw 21, while the brewing cylinder 41 moves upward simultaneously. This reverse movement design significantly improves work efficiency and shortens the brewing and cleaning cycle.

[0098] When the brewing cylinder 41 moves from the powder pressing and cooking position to the slag scraping position, the upper piston 42 and the brewing cylinder 41 will also move in opposite directions. At this time, due to the limiting effect of the limiting member 50, the lower piston 43 cannot continue to move downward, and only the brewing cylinder 41 moves downward, thus realizing the function of the powder cake residue being pushed out.

[0099] This design not only simplifies the control logic, enabling one drive mechanism 20 to control the movement of two important components simultaneously, but also reduces the overall height of the device and optimizes space utilization.

[0100] The operation of the brewing device 100 will now be described in detail with reference to the accompanying drawings. It should be noted that, for clarity, some parts or details may be omitted from the drawings. The operation of the brewing device 100 includes at least the following:

[0101] 1.Reference Figure 1 In the ready position, the brewing device 100 is in its initial state, with all components in their initial positions. The brewing cylinder 41 is located at or near the center. The upper piston 42 is in a higher position, and the lower piston 43 is in the top-dreg position, where the powder residue in the brewing chamber 411 is pushed out by the lower piston 43. The cantilever 52 of the limiting member 50 abuts against the lower piston 43 and is in its natural state, with no significant deformation of the elastic element 53.

[0102] 2.Reference Figure 5The brewing cylinder 41 moves to the powder receiving position, and the lower piston 43 moves to a position close to the bottom of the brewing cylinder 41 under its own gravity. Under the action of the drive mechanism 20, the brewing cylinder 41 rotates around the first axis Y to an off-center position. In the off-center position, the brewing cylinder 41 is located below the powder channel 25 to receive powder falling from the grinding device or other powder supply device.

[0103] 3.Reference Figure 7 and Figure 8 The brewing cylinder 41 rotates back from the powder receiving position. After receiving a predetermined amount of powder, the brewing cylinder 41 rotates back to the center position under the action of the drive mechanism 20. During the rotation, the lower piston 43 presses against the cantilever 52, causing the elastic element 53 to compress and deform. The cantilever 52 rotates around the pivot 51, making room for the lower piston 43. The lower piston 43 can smoothly drive the limiting member 50 to move during the rotation of the brewing cylinder 41, avoiding interference.

[0104] 4.Reference Figure 9 During the powder pressing and brewing stage, after the brewing cylinder 41 returns to its center position, the drive mechanism 20 begins to operate. Due to the use of a double-segment screw 21, the upper piston 42 moves downwards, and the brewing cylinder 41 moves upwards, with the two moving towards each other. The upper piston 42 enters the brewing chamber 411, contacts the powder, and applies pressure, causing the powder to be pressed into a cake. Then, hot water enters the brewing chamber 411 from the water inlet pipe 45, starting the brewing process. During this process, the lower piston 43 releases the pressure on the cantilever 52 of the limiting member 50, the elastic element 53 resets, and the cantilever 52 returns to its initial position.

[0105] 5.Reference Figure 4 During the top-dregs stage, after brewing, the drive mechanism 20 reverses its operation, and the brewing cylinder 41 moves downward. Since the cantilever 52 of the limiting component 50 has been reset, as the brewing cylinder 41 drives the lower piston 43 downward, the reset cantilever 52 can abut against the lower piston 43. Due to the abutment of the cantilever 52, the lower piston 43 cannot continue to move downward with the brewing cylinder 41. The downward movement of the brewing cylinder 41 relative to the lower piston 43 causes the lower piston 43 to push the brewed powder residue out of the filling opening 412.

[0106] 6.Reference Figure 5 Above the brewing cylinder 41, there is also a scraper 36. As the brewing cylinder 41 rotates from the center position to the offset position, the scraper 36 can scrape off the powder residue. Under the action of its own gravity, the lower piston 43 moves away from the filling opening 412 relative to the brewing cylinder 41.

[0107] In addition to the above-described embodiments, this application may have other various embodiments. For example, in addition to using the combination of screw 21 and helical sleeve 415, the drive mechanism 20 may also use other forms such as a gear and rack mechanism or a hydraulic cylinder drive mechanism 20.

[0108] The shape of the cantilever 52 of the limiting component 50 can also be varied, as long as it can achieve the functions of obstacle avoidance and slag removal.

[0109] The elastic element 53 can also be other elastic components besides a spring, such as a rubber block, elastic sheet, etc.

[0110] The limiting component 50 can be electromagnetically controlled, enabling more precise control. The specific shapes of the upper piston 42 and the lower piston 43 can be modified according to actual needs.

[0111] The brewing device 100 described above is not limited to use in coffee machines, but can also be used in other beverage brewing devices, such as tea makers or other beverage brewing devices.

[0112] 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.

[0113] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A brewing device, comprising: support; The drive mechanism is disposed on the bracket; A brewing cylinder is connected to the drive mechanism, which is used to drive the brewing cylinder to move along or rotate around the first axis. The brewing cylinder includes a brewing chamber with a filling opening. The upper piston moves relative to the brewing cylinder along the first axis to selectively close the brewing chamber from above the filling opening; The lower piston is movably engaged with the brewing chamber, and the lower piston has a top residue position that pushes the powder residue in the brewing chamber out of the filling opening. The feature is that it further includes a limiting member, which includes a pivot part and a cantilever. The pivot part is rotatably connected to the bracket, and an elastic element is provided between the cantilever and the bracket. The lower piston presses against the cantilever to deform the elastic element, thereby causing the cantilever to avoid the rotation of the lower piston. The brewing cylinder moves away from the upper piston along the first axis, and the elastic element resets so that the cantilever abuts against the lower piston along the first axis, thereby causing the lower piston to move to the top slag position under the pressure of the cantilever.

2. The brewing device according to claim 1, characterized in that, On the rotational path of the brewing cylinder around the first axis, the brewing cylinder has a central position and an offset position corresponding to the upper piston along the first axis. During the rotation of the brewing cylinder from the offset position to the central position: The lower piston presses against the arc-shaped segment, and the cantilever includes the arc-shaped segment; or, The lower piston moves along the cantilever from the engagement end toward the free end. The cantilever includes the engagement end connecting the pivot and the free end, with the engagement end and the free end being disposed opposite each other.

3. The brewing device according to claim 1, characterized in that, The bottom of the brewing cylinder is provided with a water inlet pipe, which connects to the brewing chamber. On the rotation path of the brewing cylinder around the first axis, the brewing cylinder has a central position and an off-center position corresponding to the upper piston along the first axis. During the process of the brewing cylinder rotating from the off-center position to the central position, the water inlet pipe presses against the cantilever to deform the elastic element.

4. The brewing device according to claim 2 or 3, characterized in that, As the brewing cylinder rotates from the center position to the offset position, the lower piston moves away from the filling opening relative to the brewing cylinder under its own gravity.

5. The brewing device according to any one of claims 1-3, characterized in that, The driving mechanism includes a screw, a spiral sleeve is fixedly connected to the brewing cylinder, the spiral sleeve is drivingly connected to the screw, the screw defines the first axis, and the axial direction of the pivot is parallel to the first axis; On the rotation path of the brewing cylinder around the first axis, the brewing cylinder has a central position and an offset position corresponding to the upper piston along the first axis, and the pivot portion is offset toward the offset position relative to the central position.

6. The brewing device according to any one of claims 1-3, characterized in that, The free end of the cantilever and the pivot part are respectively disposed at both ends of the limiting member, the elastic element is disposed between the free end of the cantilever and the bracket, and the free end uses the pivot part as the swing fulcrum.

7. The brewing device according to claim 6, characterized in that, The free end is provided with a first protrusion facing the bracket, the bracket is provided with a second protrusion, and the two ends of the elastic element are respectively sleeved on the first protrusion and the second protrusion. The protrusion height of the first protrusion is greater than the protrusion height of the second protrusion.

8. The brewing device according to any one of claims 1-3, wherein, The pivot portion includes a pin and a support plate bent relative to the cantilever, the cantilever and the pin being located on the same side of the support plate; the bracket is provided with a pin groove having an opening, the pin being inserted into the pin groove through the opening, and the pin being rotatably connected to the pin groove.

9. The brewing device according to any one of claims 1-3, characterized in that, The bracket is provided with a through slot, the pivot is connected to the bracket inside the through slot, and the free end of the cantilever extends from the inside of the through slot to the outside of the through slot. Along two directions orthogonal to the axis of the pivot, the cantilever extends smoothly from the inside of the through groove to the outside. As the brewing cylinder rotates around the first axis, driving the lower piston to press against the cantilever, the force applied by the lower piston to the elastic element gradually increases.

10. The brewing device according to any one of claims 1-3, wherein, The upper piston is connected to the driving mechanism, and the driving mechanism drives the upper piston and the brewing cylinder to move in opposite directions along the first axis simultaneously.

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