A beverage brewing device

Abstract

This utility model discloses a beverage brewer, including a housing, a drive assembly, a brewing head assembly, a transmission assembly, a brewing box assembly, and a water inlet / pressure relief assembly. One end of the transmission assembly is fixedly connected to the brewing head assembly, and the other end is driveably connected to the brewing box assembly. Driven by the drive assembly, the transmission assembly moves the brewing head assembly along its axial direction while simultaneously driving the brewing box assembly to complete powder receiving, oscillating powder feeding, and residue removal. The water inlet / pressure relief assembly is integrated into the brewing head piston and can move between a pressure-relieved state and a non-pressure-relieved state under the drive assembly. This utility model can complete all processes of the brewer, including powder receiving, oscillating powder feeding, powder extraction, residue removal, and automatic pressure relief, with a single motor drive. This effectively simplifies the transmission structure, reduces control complexity, lowers manufacturing costs, and improves the stability of the drive transmission.

Description

Technical Field

[0001] This utility model relates to the field of beverage equipment technology, and in particular to a brewer for a beverage equipment. Background Technology

[0002] Among existing beverage preparation equipment, coffee machines, as the core device for convenient coffee brewing, directly determine the extraction efficiency, taste quality, and overall user experience of the coffee through the performance of their brewing units. As the core functional component of a coffee machine, the brewing unit primarily handles key processes such as coffee powder receiving, oscillating powder feeding, tamping extraction, and residue cleaning. It also needs to reliably release pressure after extraction to ensure operational safety and equipment lifespan. Therefore, its structural design and transmission stability have always been key research areas in the industry. With consumers' increasing demands for coffee quality and the trend towards miniaturization and home use in coffee machines, the market has placed higher demands on brewing unit design: it not only needs to ensure precise coordination of each process to achieve full extraction of coffee powder and convenient equipment maintenance, but also needs to balance production cost control with optimized and compact structure.

[0003] In existing technologies, to complete a series of continuous actions in a brewer, such as coffee grounds receiving, oscillating feed, tamping extraction, and coffee grounds removal, a dual-motor independent drive design is typically used. One motor drives a gear to rotate, which in turn moves the piston of the brewing head up and down, ultimately tamping the coffee grounds. The other motor drives a lead screw to rotate, which in turn moves the transmission arm, thereby moving the brewing assembly to perform key actions such as coffee grounds receiving, oscillating feed, and coffee grounds removal. Meanwhile, the pressure relief function often requires an additional independent electromagnetic pressure relief valve or mechanical pressure relief structure, triggered by a separate control unit, to prevent residual high pressure from damaging the equipment after extraction.

[0004] While this dual-motor drive structure can achieve independent control of each process to a certain extent, it also brings several inherent drawbacks: First, the configuration of multiple motors significantly increases the manufacturing cost of the coffee machine. At the same time, the motors and their supporting control modules, mounting brackets, and other components occupy a large amount of internal space, resulting in a bulky overall structure of the brewer, which is not conducive to the miniaturization design of the coffee machine. Second, the multi-motor drive system requires complex electronic control programs to achieve coordinated actions. Matching the start-stop sequence and speed of each motor is difficult, which can easily lead to action delays or interference, reducing the stability of the drive transmission. Third, the independently controlled pressure relief structure not only further increases the number of parts and assembly complexity, but may also cause abnormal extraction pressure due to untimely pressure relief triggering. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a brewer for beverage equipment that can complete all processes such as powder receiving, oscillating powder feeding, powder pressing and extraction, residue ejection, and automatic pressure relief through a single motor drive. This effectively simplifies the transmission structure, reduces control complexity, lowers manufacturing costs, and improves the stability of the drive transmission.

[0006] This utility model is achieved through the following technical solution:

[0007] A brewing device for a beverage apparatus, comprising:

[0008] case;

[0009] A drive assembly, the drive assembly including a motor, a drive screw, and a drive gear threaded around the drive screw and driven to rotate by the motor;

[0010] A brewing head assembly, the brewing head assembly including a brewing head piston reciprocating along the axial direction of the drive screw;

[0011] A transmission assembly includes a transmission arm, a fixed cover, a drive plate, and a drive shaft. One end of the transmission arm is fixedly connected to the piston of the brewing head, and the other end is drivenly connected to the drive plate. The fixed cover is fixedly connected to the housing, and a U-shaped track groove is formed on the side of the fixed cover facing the drive plate. The transmission arm drives the drive plate to slide along the track groove under the push of the drive gear. The drive shaft is rotatably mounted on the fixed cover, and the drive shaft is engaged with the side of the drive plate away from the fixed cover.

[0012] The brewing box assembly completes the functions of receiving powder, oscillating powder feeding, and top slag removal under the combined action of the drive plate and the drive shaft.

[0013] A water inlet pressure relief assembly is integrated on the brewing head piston. The water inlet pressure relief assembly can switch between a pressure relief state and a non-pressure relief state under the drive of the drive gear.

[0014] Furthermore, the drive shaft includes a shaft portion and a swing portion fixedly connected to the shaft portion, and an elongated groove is formed on the swing portion;

[0015] The drive plate has a sliding groove that slidably engages with the swing part and a rolling element that passes through the elongated groove, and a bushing is fitted on the rolling element;

[0016] The transmission arm has a drive groove that mates with the rolling element.

[0017] Furthermore, a sliding block is also fixed on the drive plate, and the sliding block is slidably engaged with the track groove;

[0018] The track groove has a locking mechanism to prevent the sliding block from sliding back.

[0019] Furthermore, the brewing box assembly includes a locking mechanism, and the brewing box assembly is detachably connected to the drive shaft via the locking mechanism.

[0020] Furthermore, the brewing box assembly includes a housing;

[0021] The locking mechanism includes a button, a locking element slidably connected to the button, and an elastic element. The button is slidably disposed on the housing. One end of the elastic element abuts against the housing and the other end abuts against the locking element.

[0022] The bottom of the locking component is provided with a hook, and the drive shaft is formed with a snap-fit ​​groove that engages with the hook.

[0023] Furthermore, the brewing box assembly also includes a brewing chamber disposed within the outer shell, a top slag piston slidably connected to the brewing chamber, and a lifting assembly for driving the top slag piston to move up and down.

[0024] The lifting assembly includes a base fixed inside the housing, a gear seat slidably connected to the base, a gear set consisting of at least one pinion, and a top slag rod fixedly connected to the top slag piston. The pinion is rotatably mounted on the gear seat. A first rack is formed on the base, and a second rack is formed on the top slag rod. The first rack and the second rack mesh with opposite sides of the gear set, respectively.

[0025] The gear seat has a protruding connecting shaft exposed on the outside of the housing, and the drive plate has a recessed fixing groove that mates with the connecting shaft.

[0026] Furthermore, the water inlet pressure relief assembly includes a valve body, a pressure relief shaft, and an inlet pipe, a pressure relief pipe, and an outlet pipe respectively connected to the valve body. The inlet pipe is connected to the outlet pipe. The pressure relief shaft is slidably connected inside the valve body and can move between a pressure relief position and a non-pressure relief position under the drive of the drive gear. When the pressure relief shaft is in the pressure relief position, the pressure relief pipe is connected to the outlet pipe. When the pressure relief shaft is in the non-pressure relief position, the pressure relief pipe is blocked from the outlet pipe.

[0027] Furthermore, the inlet pipe and the pressure relief pipe are respectively fixed on the outer peripheral wall of the valve body and distributed sequentially along the axial direction of the valve body. In the axial direction of the valve body, the pressure relief shaft slides on the valve body near the end of the pressure relief pipe, and the outlet pipe is fixedly connected to the end of the valve body near the inlet pipe.

[0028] The pressure relief shaft includes a pressure relief rod inserted into the valve body. A first sealing element and a second sealing element are provided between the pressure relief rod and the inner wall of the valve body. In the axial direction of the valve body, the first sealing element and the second sealing element are respectively located on both sides of the pressure relief pipe.

[0029] Furthermore, the pressure relief shaft also includes a drive seat integrally formed with the pressure relief rod. The drive seat is located radially inside the drive gear, and the drive seat has a first slot that mates with the inner circumferential side of the drive gear. In the axial direction of the drive gear, the drive gear is in clearance fit with the inner wall of the first slot.

[0030] Furthermore, the transmission arm is located radially outside the drive gear, and the transmission arm has a second slot that mates with the outer periphery of the drive gear;

[0031] In the axial direction of the drive gear, the orthographic projection of the second slot on the drive gear is offset from the orthographic projection of the first slot on the drive gear.

[0032] In the axial direction of the drive gear, the drive gear is in clearance fit with the inner wall of the second slot, and the distance d1 between the drive gear and the inner wall of the second slot is greater than the distance d2 between the drive gear and the inner wall of the first slot.

[0033] Compared with existing technologies, the advantages of this utility model are:

[0034] The motor drives the drive gear to rotate, which in turn drives the axial movement of the brewing head assembly and the powder receiving, powder feeding, and residue removal actions of the brewing box assembly. In addition, the drive gear can also drive the pressure relief shaft to slide along the valve body axis, realizing precise switching of the pressure relief state. All processes of the brewer, such as powder receiving, oscillating powder feeding, powder pressing and extraction, residue removal, and automatic pressure relief, are completed by a single motor drive. This effectively simplifies the transmission structure and reduces control complexity, lowers production and manufacturing costs, and improves the stability of the drive transmission. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the brewing device;

[0036] Figure 2 This is a partial structural diagram of a brewing device;

[0037] Figure 3 This is a partial structural cross-sectional view of the brewing device;

[0038] Figure 4 The explosion was caused by a partial structural explosion of the brewing device. Figure 1 ;

[0039] Figure 5 The explosion was caused by a partial structural explosion of the brewing device. Figure 2 ;

[0040] Figure 6 This is a partial structural cross-sectional view of the brewing device;

[0041] Figure 7 This is a schematic diagram of the brewing box assembly;

[0042] Figure 8 Cross-section of the brewing box assembly Figure 1 ;

[0043] Figure 9 This is a schematic diagram of the locking mechanism;

[0044] Figure 10 Cross-section of the brewing box assembly Figure 2 ;

[0045] Figure 11 This is a partial structural diagram of the brewer in the powder receiving state;

[0046] Figure 12 This is a partial structural diagram of a brewer in the extraction state.

[0047] Figure 13 This is a partial structural diagram of the brewer in the state of sediment settling.

[0048] Figure 14 This is a partial structural cross-sectional view of the brewer in its non-depressurized state;

[0049] Figure 15 This is a partial structural cross-sectional view of the brewer under depressurization conditions. Detailed Implementation

[0050] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0051] like Figures 1-3 As shown, a beverage brewing device according to an embodiment of this utility model includes a housing 100 and a drive assembly 200, a brewing head assembly 300, a transmission assembly 400, and a brewing box assembly 500 disposed on the housing 100. One end of the transmission assembly 400 is fixedly connected to the brewing head assembly 300, and the other end is drively connected to the brewing box assembly 500. Driven by the drive assembly 200, the transmission assembly 400 drives the brewing head assembly 300 to move along the axial direction of the brewing head assembly 300, while simultaneously driving the brewing box assembly 500 to complete the functions of powder receiving, oscillating powder feeding, and residue removal. Through the linkage design of the transmission assembly 400, the brewing head assembly 300 synchronously realizes the automatic powder receiving and feeding of the brewing box assembly 500 during axial movement, improving the automation level of the brewing process.

[0052] like Figure 2As shown, the drive assembly 200 includes a motor 210, a drive screw 220, and a drive gear 230 threaded around the drive screw 220 and driven to rotate by the motor 210. A multi-stage gear transmission mechanism is also provided between the motor 210 and the drive gear 230. In this embodiment, the multi-stage gear transmission mechanism specifically includes a screw 211 fixed on the output shaft of the motor 210, a first transmission gear 212 meshing with the screw 211, a second transmission gear 213 coaxially fixedly connected to the first transmission gear 212, and a gear post 214 meshing with the second transmission gear 213. The gear post 214 meshes with the drive gear 230, wherein the axial direction of the gear post 214 is parallel to the axial direction of the drive screw 220. The meshing transmission between the gear post 214 and the drive gear 230 causes the drive gear 230 to move along the axial direction of the drive screw 220, thereby driving the transmission assembly 400 to achieve axial drive of the brewing head assembly 300 and linkage control of the brewing box assembly 500. By using a single motor 210 to simultaneously drive the axial movement of the brewing head assembly 300 and the powder receiving, powder feeding, and slag topping actions of the brewing box assembly 500, the coordinated operation of multiple mechanisms is achieved, simplifying the overall structure and reducing manufacturing costs and failure rates.

[0053] In addition, an encoder 215 is installed at the output shaft of the motor 210 to detect the number of rotations of the motor 210 in real time and feed it back to the control system, so as to achieve precise control of the axial displacement of the brewing head assembly 300, ensure stable pressure during the brewing process, and improve the consistency and quality of beverage extraction.

[0054] like Figure 3 As shown, the brewing head assembly 300 includes a brewing head piston 310 disposed inside the drive screw 220 and capable of reciprocating along the axis of the drive screw 220. A water distribution plate 320 is fixed to the bottom of the brewing head piston 310. The water distribution plate 320 forms a sealed cavity with the brewing head piston 310 through an annular sealing ring 330. Multiple micro-holes are evenly distributed on its surface to uniformly guide water flow into the coffee puck. When the brewing head piston 310 moves downward under the drive assembly 200, the water distribution plate 320 simultaneously presses the coffee puck and begins water extraction, achieving efficient and stable liquid penetration. After extraction, the brewing head piston 310 moves upward to reset under the drive assembly 200, the water distribution plate 320 detaches from the coffee puck, and the remaining coffee grounds are collected by the brewing box assembly 500 and transferred to the top-coffee station.

[0055] like Figure 2 , Figure 4 and Figure 5As shown, the transmission assembly 400 includes a transmission arm 410, a fixed cover 420, a drive plate 430, and a drive shaft 440. One end of the transmission arm 410 is fixedly connected to the brewing head piston 310, and the other end is connected to the drive plate 430. The fixed cover 420 is fixedly connected to the housing 100, and a U-shaped track groove 421 is formed on the side of the fixed cover 420 facing the drive plate 430. The transmission arm 410 drives the drive plate 430 to slide along the track groove 421 under the push of the drive gear 230. The drive shaft 440 is rotatably mounted on the fixed cover 420, and the drive shaft 440 is engaged with the side of the drive plate 430 away from the fixed cover 420. The brewing box assembly 500 includes a housing 510, a brewing chamber 520 disposed within the housing 510, and a top slag piston 530 slidably connected within the brewing chamber 520. When the drive plate 430 slides along the track groove 421, its path can be relatively divided into two segments. In the first segment, the drive plate 430 swings under the drive of the transmission arm 410. In the swinging state, the drive plate 430 can push the drive shaft 440 to rotate. At this time, the drive plate 430 and the drive shaft 440 work together to drive the brewing chamber 520 to complete the swinging out of the box to remove slag and swinging back to the box to feed powder. In the second segment, the drive plate 430 moves in a straight line under the drive of the transmission arm 410. At this time, the drive shaft 440 remains stationary, while the drive plate 430 can push the top slag piston 530 to move axially along the brewing chamber 520 to complete the action of connecting the powder and pushing out the top slag after extraction.

[0056] Specifically, the drive shaft 440 includes a shaft portion 441 and a swing portion 442 fixedly connected to the shaft portion 441. An elongated groove 4420 is formed on the swing portion 442. The drive plate 430 has a sliding groove 431 that slidably engages with the swing portion 442 and a rolling element 432 passing through the elongated groove 4420. A bushing 433 is fitted onto the rolling element 432. The transmission arm 410 has a drive groove 413 that engages with the rolling element 432. Specifically, when the drive plate 430 swings under the drive of the transmission arm 410, since the swing portion 442 of the drive shaft 440 is engaged within the sliding groove 431 of the drive plate 430, the swinging of the drive plate 430 causes the swing portion 442 to rotate around the shaft portion 441 of the drive shaft 440, thereby realizing the swinging dispensing or swinging returning action of the brewing box assembly 500. When the drive plate 430 moves linearly under the drive arm 410, the rolling element 432 on the drive plate 430 slides along the elongated groove 4420. At this time, the swing part 442 does not rotate, the drive shaft 440 remains stationary, and the linear motion of the drive plate 430 is directly transmitted to the top slag piston 530, pushing it to move axially in the brewing chamber 520 to complete the top slag action or powder receiving action.

[0057] like Figure 4 and Figure 5As shown, a sliding block 434 is also fixed on the drive plate 430, and the sliding block 434 is slidably engaged with the track groove 421; the brewing box assembly 500 completes the powder receiving, oscillating powder feeding and slag topping work under the joint action of the drive plate 430 and the drive shaft 440. A fastener 4210 is formed in the track groove 421 to prevent the sliding block 434 from slipping back.

[0058] like Figure 6 As shown, the brewing box assembly 500 also includes a brewing chamber 520 disposed within the outer casing 510, a top slag piston 530 slidably connected within the brewing chamber 520, and a lifting assembly 540 for driving the top slag piston 530 to move up and down. Specifically, the lifting assembly 540 includes a base 541 fixed within the outer casing 510, a gear seat 542 slidably connected to the base 541, a gear set consisting of at least one pinion 543, and a top slag rod 544 fixedly connected to the top slag piston 530. The pinion 543 is rotatably disposed on the gear seat 542. A first rack 5410 is formed on the base 541, and a second rack 5440 is formed on the top slag rod 544. The first rack 5410 and the second rack 5440 respectively mesh with opposite sides of the gear set. A connecting shaft 5420 protrudes from the gear seat 542 and is exposed on the outside of the outer casing 510. A fixing groove 435 that mates with the connecting shaft 5420 is recessed in the drive plate 430. Understandably, the lifting assembly 540 is only driven when the top slag piston 530 moves axially. Specifically, when the drive plate 430 drives the connecting shaft 5420 to move linearly, the gear seat 542 moves accordingly, causing the gear set to roll between the first rack 5410 and the second rack 5440, thereby transmitting the linear driving force to the top slag rod 544, achieving stable lifting and lowering of the top slag piston 530. In this embodiment, there are one or more pinions 543. When there are multiple pinions 543, they mesh sequentially in a straight line. The specific number of pinions 543 is odd. The odd number of pinions 543 is designed to increase the stroke of the top slag rod 544. Since the pinions 543 are mounted on the gear seat 542, when the gear seat 542 moves, the pinions 543 also move in space. At the same time, due to the meshing relationship, the top slag rod 544 is forced to move synchronously and its direction of movement is the same as that of the gear seat 542. While the pinions 543 move in space, they also rotate, so that the moving distance of the top slag rod 544 is the sum of the displacement of the gear seat 542 and the rolling stroke of the pinions 543, thereby effectively amplifying the axial stroke of the top slag piston 530. The reason for using an odd number of pinions is to ensure that the pinions 543 at both ends of the gear set rotate in the same direction, so that the movement direction of the second rack 5440 is consistent with the meshing drive direction of the pinions 543, provided that the first rack 5410 is fixed.

[0059] like Figures 4-6As shown, the fixed cover 420 has a window 422 for the connecting shaft 5420 to pass through. The window 422 is U-shaped. When the drive plate 430 slides along the U-shaped track groove 421, the connecting shaft 5420 is driven by the fixed groove 435 of the drive plate 430 and moves synchronously along the inner side of the U-shaped window 422. The U-shaped track groove 421 and the U-shaped window 422 cooperate with each other to restrict the movement trajectory of the drive plate 430 and the connecting shaft 5420 to a closed loop, ensuring the stability and accuracy of the drive plate 430. This improves the stability of the oscillation of the brewing box assembly 500 and the reliability of the lifting action of the top slag piston 530. During long-term use, this structure can effectively avoid the swaying or jamming of the drive plate 430 and ensure continuous and smooth power transmission.

[0060] The brewing container assembly 500 also includes a locking mechanism housed within the outer casing 510. The brewing container assembly 500 is detachably connected to the drive shaft 440 via the locking mechanism. This allows the locking mechanism to automatically engage and lock with the drive shaft 440 after the brewing container assembly 500 is installed, ensuring stable and reliable transmission. Disassembly requires only slight external force to release the lock, enabling quick assembly and disassembly of the brewing container assembly 500. This facilitates timely cleaning by the user, effectively preventing filter clogging and residue deterioration, thereby improving the taste of the beverage and ensuring hygiene and safety.

[0061] like Figures 7-9 As shown, the locking mechanism includes a button 524, a locking element 521 slidably connected to the button 524, and an elastic element 522. The button 524 is slidably disposed on the housing 510. One end of the elastic element 522 abuts against the housing 510, and the other end abuts against the locking element 521. A hook 523 is provided at the bottom of the locking element 521, and a locking groove 443 that mates with the hook 523 is formed on the drive shaft 440 of the transmission assembly 400. In this embodiment, a pair of buttons 524 are symmetrically disposed on opposite sides of the housing 510. When the brewing box assembly 500 is installed into the transmission assembly 400, the drive shaft 440 is inserted into the housing 510. The locking groove 443 aligns with the hook 523 and automatically engages. At this time, the elastic element 522 is compressed and stores energy, achieving locking and positioning. For disassembly, the user simultaneously presses the buttons 524 on both sides with their thumbs, causing the locking element 521 to slide inward against the elastic force of the elastic element 522, disengaging the hook 523 from the locking groove 443, allowing the brewing box assembly 500 to be removed. This structure is convenient to operate, requiring no tools for assembly and disassembly, significantly improving cleaning efficiency and user experience.

[0062] The button 524 includes a pressing part 5240 and a driving part 5241 fixedly connected to the pressing part 5240. The locking member 521 is provided with a wedge block 5210 that slides and engages with the driving part 5241. When the button 524 is pressed, the driving part 5241 pushes the wedge block 5210 to move downward in the vertical direction, thereby causing the locking member 521 to move downward in the vertical direction, so that the latch 523 disengages from the latching groove 443, thereby unlocking the device.

[0063] The outer wall of the outer casing 510 is recessed to form a sliding groove 511 for accommodating the pressing part 5240, and the bottom wall of the sliding groove 511 is provided with an insertion hole 5110 for the driving part 5241 to be inserted, and the side wall of the sliding groove 511 is also provided with a retaining edge 5111 for limiting the pressing part 5240.

[0064] The locking member 521 has a baffle 5211 with an opening 5212 for the drive part 5241 to pass through. The locking member 521 also has a limit block 5213, which is slidably connected to the end of the drive part 5241 away from the wedge block 5210. When the locking member 521 moves downwards driven by the button 524, the limit block 5213 slides along the drive part 5241, ensuring smooth movement of the locking member 521 and preventing deviation or jamming.

[0065] The outer casing 510 has a limiting groove 512 inside, and the locking element 521 is slidably disposed within the limiting groove 512. This ensures that the locking element 521 slides stably in the vertical direction under the constraint of the limiting groove 512, effectively preventing shaking or tilting during movement and further improving structural reliability.

[0066] like Figure 4 and Figure 6 As shown, the transmission assembly 400 includes a drive shaft 440. The housing 510 has a slot 513 for inserting the shaft portion 441 of the drive shaft 440. A locking groove 443 is formed at the end of the shaft portion 441. A hook 523 has an inclined surface 5230 that slides into the end of the shaft portion 441. When installing the brewing box assembly 500, the end of the shaft portion 441 slides in along the inclined surface 5230, guiding the hook 523 smoothly into the locking groove 443. The elastic element 522 then compresses and stores energy until the hook 523 and the locking groove 443 are fully engaged, achieving automatic locking. The entire installation process is smooth and requires no additional operation, ensuring that the user can complete it with one hand.

[0067] like Figure 10The brewing box assembly 500 further includes a liquid outlet pipe 550 communicating with the brewing chamber 520 and a liquid outlet connector 551 sealed to the liquid outlet pipe 550; a check valve block 552 and a top spring 553 are provided inside the liquid outlet pipe 550. One end of the top spring 553 abuts against the liquid outlet connector 551 and the other end abuts against the check valve block 552. The end of the check valve block 552 away from the top spring 553 abuts against an annular block 554 inside the liquid outlet pipe 550 to block the internal channel of the liquid outlet pipe 550. A liquid outlet nozzle 444 is formed on the drive shaft 440 to mate with the liquid outlet connector 551.

[0068] like Figure 3 As shown, the brewer also includes a water inlet pressure relief assembly 600, which is integrated into the brewing head piston 310. The water inlet pressure relief assembly 600 can switch between a pressure relief state and a non-pressure relief state under the drive of the drive gear 230. Specifically, the water inlet pressure relief assembly 600 includes a valve body 610, a pressure relief shaft 620, and an inlet pipe 630, a pressure relief pipe 640, and an outlet pipe 650, all connected to the valve body 610. The inlet pipe 630 and the outlet pipe 650 are connected. The pressure relief shaft 620 is slidably connected inside the valve body 610 and can move between a pressure relief position and a non-pressure relief position under the drive of the drive gear 230. (See reference...) Figure 15 When the pressure relief shaft 620 is in the pressure relief position, the pressure relief pipe 640 and the outlet pipe 650 are connected. (Refer to...) Figure 14 When the pressure relief shaft 620 is in the non-pressure relief position, the pressure relief pipe 640 and the water outlet pipe 650 are isolated. The water inlet pipe 630 is connected to an external water source, introducing water into the valve body 610 and delivering it to the brew head piston 310 via the water outlet pipe 650, providing stable water pressure for coffee extraction. After extraction, the drive gear 230 drives the pressure relief shaft 620 to switch to the pressure relief position, connecting the water outlet pipe 650 and the pressure relief pipe 640. The internal pressure is quickly released through the pressure relief pipe 640, preventing residual water pressure from affecting the sealing performance of the brew head.

[0069] Specifically, the inlet pipe 630 and the pressure relief pipe 640 are respectively fixed on the outer peripheral wall of the valve body 610 and distributed sequentially along the axial direction of the valve body 610. In the axial direction of the valve body 610, the pressure relief shaft 620 slides on the end of the valve body 610 near the pressure relief pipe 640, and the outlet pipe 650 is fixedly connected to the end of the valve body 610 near the inlet pipe 630. The pressure relief shaft 620 includes a pressure relief rod 621 inserted into the valve body 610. A first sealing element 623 and a second sealing element 624 are provided between the pressure relief rod 621 and the inner wall of the valve body 610. In the axial direction of the valve body 610, the first sealing element 623 and the second sealing element 624 are respectively located on both sides of the pressure relief pipe 640. In the non-pressure relief position, the first seal 623 and the second seal 624 together block the passage between the pressure relief pipe 640 and the outlet pipe 650, ensuring that the water flow path only passes through the inlet pipe 630 to the outlet pipe 650, maintaining stable extraction pressure. When switched to the pressure relief position, the pressure relief shaft 620 drives the pressure relief rod 621 to move axially, and the first seal 623 disengages from the sealing area on one side of the pressure relief pipe 640, so that the outlet pipe 650 is connected to the pressure relief pipe 640, and the pressure is quickly released to ensure equipment safety.

[0070] like Figure 3 As shown, the pressure relief shaft 620 also includes a drive seat 622 integrally formed with the pressure relief rod 621. The drive seat 622 is located radially inside the drive gear 230, and the drive seat 622 has a first slot 6220 that engages with the inner circumferential side of the drive gear 230. Furthermore, in the axial direction of the drive gear 230, the drive gear 230 and the inner wall of the first slot 6220 are in clearance fit. In this embodiment, the pressure relief shaft 620 is driven by the drive gear 230. The drive gear 230, through its engagement with the first slot 6220, drives the pressure relief shaft 620 to slide axially along the valve body 610, achieving precise switching of the pressure relief state. This eliminates the need for an additional independent electromagnetic pressure relief valve or a separate control unit to control the mechanical pressure relief structure; the pressure relief action can be completed solely by the drive gear 230, simplifying the system structure, reducing control complexity, and improving response speed and reliability. The clearance fit between the drive seat 622 and the drive gear 230 ensures the normal rotation of the drive gear 230 and effectively absorbs transmission deviations, ensuring smooth and uninterrupted movement and improving control accuracy.

[0071] Continue to refer to Figure 3The transmission arm 410 is located radially outside the drive gear 230, and the transmission arm 410 has a second slot 411 that mates with the outer periphery of the drive gear 230. In the axial direction of the drive gear 230, the orthographic projection of the second slot 411 on the drive gear 230 is offset from the orthographic projection of the first slot 6220 on the drive gear 230. In the axial direction of the drive gear 230, the drive gear 230 and the inner wall of the second slot 411 are in clearance fit, and the distance d1 between the drive gear 230 and the inner wall of the second slot 411 is greater than the distance d2 between the drive gear 230 and the inner wall of the first slot 6220. The transmission arm 410 has an opening 412 for the water inlet pipe 630 and the pressure relief pipe 640 to extend from. After extraction, during the upward movement of the drive gear 230, because the distance d2 between the drive gear 230 and the inner wall of the first slot 6220 is less than the distance d1 between the drive gear 230 and the inner wall of the second slot 411, the drive gear 230 preferentially contacts the drive seat 622 during its upward movement. This causes the pressure relief shaft 620 to move upward, allowing the pressure relief rod 621 to disengage from the sealing area and completing the pressure relief action. After the pressure relief shaft 620 has completely moved upward, the drive gear 230 continues to move upward, finally contacting the second slot 411 and driving the transmission arm 410 to move. This, in turn, causes the brewing head piston 310 to retract upward, completing the brewing head reset action. In this process, the drive gear 230 sequentially performs the coordinated operation of the two stages of pressure relief and brewing head piston 310 reset, avoiding timing errors caused by multi-component collaborative control and ensuring accurate and reliable action timing.

[0072] The brewing process is as follows:

[0073] refer to Figure 11 In this state, the coffee powder receiving state is maintained. The brewing cartridge assembly 500 is in the dispensing state under the drive of the drive plate 430 and drive shaft 440, and the top-coffee piston 530 in the brewing chamber 520 is at its lowest position. At this time, the top of the brewing chamber 520 is open, facilitating the addition of coffee powder. Simultaneously, the sliding block 434 on the drive plate 430 is located at the lower right corner of the track groove 421. Then, refer to... Figure 12In this state, the extraction state is activated. Drive gear 230 moves downward under power, and drive gear 230 drives drive plate 430 to swing to the left through transmission arm 410. That is, sliding block 434 on drive plate 430 slides from the lower right corner to the lower left corner of track groove 421, causing brewing box assembly 500 to retract into the machine body and enter the sealing state. Then, drive gear 230 continues to move downward, pushing transmission arm 410 to further drive brewing head piston 310 to further press down top-dough piston 530 in brewing chamber 520, so that coffee powder is compacted. At this time, water inlet pipe 630 is connected to external water source, and water is injected into brewing chamber 520 through water inlet pipe 630 to start extracting coffee liquid. After extraction, the drive gear 230 moves upward, first contacting the drive seat 622 and driving the pressure relief shaft 620 upward, causing the pressure relief rod 621 to disengage from the sealing area to complete pressure relief. Then, the drive gear 230 continues to move upward and engages with the second slot 411, driving the transmission arm 410 to pull the brewing head piston 310 back a short distance. At this time, the sliding block 434 on the drive plate 430 moves along the track groove 421 from the lower left corner to the upper left corner. Simultaneously, the upward movement of the drive plate 430 drives the gear seat 542 of the lifting assembly 540 upward, which in turn drives the top-coffee piston 530 to move upward synchronously, pushing the coffee grounds to the top of the brewing chamber 520. Next, refer to... Figure 13 In this state, the coffee grounds are in the dropping state. The drive gear 230 continues to move upward, causing the sliding block 434 to slide along the track groove 421 from the upper left corner to the upper right corner. This drives the brewing box assembly 500 to swing to the right via the drive plate 430, causing the brewing box assembly 500 to exit the machine body and enter the dispensing state. At this time, the ejected coffee grounds are guided by the slurry plate 514 on the outer shell 510 into the grounds collection box, completing the automatic grounds cleaning. Next, the drive gear 230 moves downward again by a preset distance, causing the transmission arm 410 to press down, causing the sliding block 434 on the drive plate 434 to slide along the track groove 421 from the upper right corner to the lower right corner. Simultaneously, the lifting assembly 540 causes the top-drip piston 530 in the brewing box assembly 500 to move downward and reset, returning to the powder receiving state, preparing for the next brewing cycle.

[0074] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A brewing device for a beverage apparatus, characterized in that, include: Casing (100); The drive assembly (200) includes a motor (210), a drive screw (220), and a drive gear (230) threaded around the drive screw (220) and driven to rotate by the motor (210). A brewing head assembly (300) includes a brewing head piston (310) that is reciprocating along the axial direction of the drive screw (220). A transmission assembly (400) includes a transmission arm (410), a fixed cover (420), a drive plate (430), and a drive shaft (440). One end of the transmission arm (410) is fixedly connected to the brewing head piston (310), and the other end is connected to the drive plate (430). The fixed cover (420) is fixedly connected to the housing (100), and a U-shaped track groove (421) is formed on the side of the fixed cover (420) facing the drive plate (430). The transmission arm (410) drives the drive plate (430) to slide along the track groove (421) under the push of the drive gear (230). The drive shaft (440) is rotatably mounted on the fixed cover (420), and the drive shaft (440) is engaged with the side of the drive plate (430) away from the fixed cover (420). The brewing box assembly (500) performs powder receiving, oscillating powder feeding and slag removal under the combined action of the drive plate (430) and the drive shaft (440); A water inlet pressure relief assembly (600) is integrated on the brewing head piston (310). The water inlet pressure relief assembly (600) can switch between a pressure relief state and a non-pressure relief state under the drive of the drive gear (230).

2. The brewing device of the beverage equipment according to claim 1, characterized in that, The drive shaft (440) includes a shaft portion (441) and a swing portion (442) fixedly connected to the shaft portion (441), and an elongated groove (4420) is formed on the swing portion (442). The drive plate (430) has a sliding groove (431) that is slidably engaged with the swing part (442) and a rolling element (432) that passes through the elongated groove (4420). A bushing (433) is fitted on the rolling element (432). The transmission arm (410) has a drive groove (413) that cooperates with the rolling element (432).

3. The brewing device of the beverage equipment according to claim 2, characterized in that, A sliding block (434) is also fixed on the drive plate (430), and the sliding block (434) is slidably engaged with the track groove (421); The track groove (421) has a latch (4210) to prevent the sliding block (434) from sliding back.

4. The brewer of the beverage equipment according to claim 3, characterized in that, The brewing box assembly (500) includes a locking mechanism, and the brewing box assembly (500) is detachably connected to the drive shaft (440) via the locking mechanism.

5. The brewer of the beverage equipment according to claim 4, characterized in that, The brewing box assembly (500) includes a housing (510); The locking mechanism includes a button (524), a locking element (521) slidably connected to the button (524), and an elastic element (522). The button (524) is slidably disposed on the outer shell (510). One end of the elastic element (522) abuts against the outer shell (510) and the other end abuts against the locking element (521). The bottom of the locking member (521) is provided with a hook (523), and the drive shaft (440) has a locking groove (443) that mates with the hook (523).

6. The brewing device of the beverage equipment according to claim 5, characterized in that, The brewing box assembly (500) further includes a brewing chamber (520) disposed within the outer shell (510), a top slag piston (530) slidably connected within the brewing chamber (520), and a lifting assembly (540) for driving the top slag piston (530) to move up and down. The lifting assembly (540) includes a base (541) fixed inside the housing (510), a gear seat (542) slidably connected to the base (541), a gear set consisting of at least one pinion (543), and a top slag rod (544) fixedly connected to the top slag piston (530). The pinion (543) is rotatably mounted on the gear seat (542). A first rack (5410) is formed on the base (541), and a second rack (5440) is formed on the top slag rod (544). The first rack (5410) and the second rack (5440) respectively mesh with opposite sides of the gear set. The gear seat (542) is provided with a connecting shaft (5420) exposed on the outside of the housing (510), and the drive plate (430) is provided with a fixing groove (435) that mates with the connecting shaft (5420).

7. The brewer of the beverage equipment according to claim 4, characterized in that, The water inlet pressure relief assembly (600) includes a valve body (610), a pressure relief shaft (620), and an inlet pipe (630), a pressure relief pipe (640), and an outlet pipe (650) respectively connected to the valve body (610). The inlet pipe (630) is connected to the outlet pipe (650). The pressure relief shaft (620) is slidably connected inside the valve body (610) and can move between a pressure relief position and a non-pressure relief position under the drive of the drive gear (230). When the pressure relief shaft (620) is in the pressure relief position, the pressure relief pipe (640) and the outlet pipe (650) are in a connected state. When the pressure relief shaft (620) is in the non-pressure relief position, the pressure relief pipe (640) and the outlet pipe (650) are in a blocked state.

8. The brewer of the beverage equipment according to claim 7, characterized in that, The inlet pipe (630) and the pressure relief pipe (640) are respectively fixed on the outer peripheral wall of the valve body (610) and distributed sequentially along the axial direction of the valve body (610). In the axial direction of the valve body (610), the pressure relief shaft (620) slides on the valve body (610) near the end of the pressure relief pipe (640), and the outlet pipe (650) is fixedly connected to the end of the valve body (610) near the inlet pipe (630). The pressure relief shaft (620) includes a pressure relief rod (621) inserted into the valve body (610). A first sealing element (623) and a second sealing element (624) are provided between the pressure relief rod (621) and the inner wall of the valve body (610). In the axial direction of the valve body (610), the first sealing element (623) and the second sealing element (624) are respectively located on both sides of the pressure relief pipe (640).

9. The brewing device of the beverage equipment according to claim 8, characterized in that, The pressure relief shaft (620) also includes a drive seat (622) integrally formed with the pressure relief rod (621). The drive seat (622) is located on the radial inner side of the drive gear (230), and the drive seat (622) has a first slot (6220) that mates with the inner circumferential side of the drive gear (230). In the axial direction of the drive gear (230), the drive gear (230) is in clearance fit with the inner wall of the first slot (6220).

10. The brewer of the beverage equipment according to claim 9, characterized in that, The transmission arm (410) is located radially outside the drive gear (230), and the transmission arm (410) has a second slot (411) that mates with the outer periphery of the drive gear (230). In the axial direction of the drive gear (230), the orthographic projection of the second slot (411) on the drive gear (230) is offset from the orthographic projection of the first slot (6220) on the drive gear (230); In the axial direction of the drive gear (230), the drive gear (230) is in clearance fit with the inner wall of the second slot (411), and the distance d1 between the drive gear (230) and the inner wall of the second slot (411) is greater than the distance d2 between the drive gear (230) and the inner wall of the first slot (6220).

Images