Brewing system and full-automatic coffee machine

Abstract

The utility model provides a brewing system and a full-automatic coffee maker, the brewing system comprises a framework, the framework comprises a first side plate, a second side plate and a top plate, the first side plate and the second side plate are opposite, the top plate is connected with the first side plate and the second side plate, the first side plate is provided with a slag outlet, and a convex arc part is formed in the middle of the first vertical edge of the first side plate; the powder pressing head assembly is arranged at the top of the framework; the brewing cavity assembly is arranged in the framework and comprises a brewing cavity body and a residue pushing rod, and a residue scraping component is arranged at the top of the brewing cavity body; the power assembly is fixed to the framework and drives the brewing cavity to do reciprocating motion in the vertical direction, the brewing cavity is provided with an extraction position, a powder receiving position and a slag scraping position from top to bottom in the reciprocating motion process, and at the slag scraping position, a slag scraping component rotates under the action of the convex arc part, and slag cakes are pushed out of the slag outlet. The brewing cavity is always vertical, so that the uniformity of filling powder and pressed powder cakes is ensured, and the quality of coffee liquid is improved; and the brewing system is compact in overall structure, small in occupied space and high in universality.

Description

Technical Field

[0001] This application belongs to the field of coffee machine technology, and particularly relates to a brewing system and a fully automatic coffee machine. Background Technology

[0002] The brewing chamber of an automatic espresso machine is mainly horizontal or tilted during operation. In a horizontal brewing chamber, the coffee grounds are not evenly distributed vertically, and when tilted, they are unevenly distributed horizontally. In particular, when there is a deviation in the amount of coffee grounds, the water flow can easily penetrate the coffee puck during extraction, affecting the quality of the coffee. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art, the purpose of this application embodiment is to provide a brewing system in which the brewing chamber assembly is always in a vertical position during powder filling and the entire operation process.

[0004] The technical solution adopted in this application embodiment is a brewing system, comprising:

[0005] The skeleton includes opposing first side plates, second side plates, and a top plate connecting the top ends of the first side plates and the second side plates, so that the skeleton is in an inverted U shape. The first side plate is provided with a slag outlet, and the middle part of the first vertical edge of the first side plate arches outward to form a convex arc portion.

[0006] A powder pressing head assembly is located on the top inner side of the frame;

[0007] A brewing chamber assembly is located within the area enclosed by the skeleton and below the powder pressing head assembly. The brewing chamber assembly includes a brewing chamber body and a slag pusher movably disposed within the brewing chamber body. A slag scraping component is rotatably provided at the top of the brewing chamber body near its periphery.

[0008] A power assembly, fixed to the frame and connected to the brewing chamber, is used to drive the brewing chamber to reciprocate in the vertical direction to move closer to or away from the powder pressing head assembly. During the reciprocating motion, the brewing chamber has an extraction position, a powder receiving position, and a slag scraping position arranged sequentially from top to bottom. At the slag scraping position, the slag scraping member rotates under the action of the convex arc portion and pushes the slag cake at the top of the brewing chamber out of the slag outlet.

[0009] In an optional embodiment, the power assembly includes a motor, a motor base, a lead screw, and a guide positioning mechanism. The motor base has a channel extending to its upper and lower ends. The lead screw passes through the channel, and its upper end extends out of the channel and is fixed with a sliding seat. The motor is fixed to the motor base and is threadedly connected to the lead screw through a transmission mechanism to drive the lead screw to move linearly along the channel.

[0010] The brewing chamber is located within the sliding seat. The lower end of the push rod extends out of the brewing chamber and is connected to the guiding and positioning mechanism. When the lead screw moves linearly, it drives the sliding seat and the brewing chamber to move linearly synchronously. Under the action of the guiding and positioning mechanism, the push rod can move synchronously with the brewing chamber or be positioned and held stationary. The power assembly has a reasonable structure, which easily enables the brewing chamber to move back and forth linearly in the vertical direction. Furthermore, the guiding and positioning mechanism can position or release the push rod, allowing it to either move with the brewing chamber or be positioned by the guiding and positioning mechanism, depending on the needs of the brewing process, without moving with the brewing chamber.

[0011] In an optional embodiment, the guiding and positioning mechanism includes:

[0012] A stop seat, which is fixed to the motor base and extends vertically, has a hole on its outer periphery near its top, and the hole has a retaining bead that can extend out or retract into it.

[0013] The slide rail is a vertically arranged cylindrical shape. The slide rail is sleeved on the outside of the stop seat and connected to the lower end of the slag pusher. The outer periphery of the slide rail is provided with two positioning holes arranged vertically.

[0014] When the motor drives the lead screw to reciprocate the brewing chamber in the vertical direction, the brewing chamber, through the slag pusher, drives the slide rail to move up and down along the stop, so that the two positioning holes on the slide rail can be aligned with the locking beads respectively. The locking beads extend into the corresponding positioning holes to position the slide rail, preventing the slide rail and the slag pusher from moving with the brewing chamber. This application uses two positioning holes at different heights to create interference during the up-and-down movement of the brewing chamber, achieving asynchronous operation of the brewing chamber and the slag pusher, and coordinating the related slag pushing and powder loading actions.

[0015] In an optional embodiment, the lead screw has through holes extending through both ends along its axial direction, the upper end of which communicates with the sliding seat; the lower end of the pusher rod extends into the through hole via the upper end of the through hole; the slide rail extends into the through hole via the lower end of the through hole and connects to the lower end of the pusher rod. By housing the pusher rod and slide rail within the lead screw, a compact structure is achieved.

[0016] In an optional embodiment, the motor mount includes a base body and a guide sleeve extending downward from the middle of the bottom of the base body, the channel extending from the top of the base body to the bottom of the guide sleeve; and / or

[0017] The bottom of the stop is provided with a base; the stop extends into the channel, and the base of the stop is located outside the guide sleeve and is fixedly connected to the bottom end of the guide sleeve; and / or

[0018] The lower ends of the first side plate and the second side plate are located on opposite sides of the seat body and are respectively locked to the seat body.

[0019] In an optional embodiment, a stop flange is provided on a partial periphery of the top end of the brewing chamber, and an installation hole is provided at the top end of the brewing chamber;

[0020] The scraping component includes a scraper blade, a rotating shaft at the bottom of the scraper blade, a guide post at the end of the scraper blade, and a scraper spring that applies a restoring force to the scraper blade. The guide post abuts against the first vertical edge of the first side plate and slides along the first vertical edge when the brewing chamber reciprocates in the vertical direction. The rotating shaft is rotatably connected to the mounting hole so that the scraper blade can rotate relative to the top of the brewing chamber to have an initial position and a scraping position. The scraper blade is positioned such that its front end abuts against the stop edge. When the brewing chamber moves downward, causing the guide pin on the scraper blade to gradually slide from above onto the convex arc portion, the guide pin drives the scraper blade to rotate towards the scraping position, overcoming the stop edge. This pushes the slag cake at the top of the brewing chamber out of the slag outlet, and the guide pin slides downward away from the convex arc portion. The convex arc portion releases its effect on the guide pin, and the scraper blade returns to its initial position under the action of the scraper spring. The scraper component's structure is cleverly and rationally designed, ensuring that the brewing chamber remains vertical during the scraping process.

[0021] In an optional embodiment, a handle is provided on the outside of the brewing chamber, and buttons are provided on opposite sides of the handle, with buckles on the buttons;

[0022] The sliding seat is a frame structure including a top and four sides connected in sequence. The top and one of the sides are open. The two sides of the sliding seat adjacent to the open side are respectively provided with slots. The brewing chamber is inserted into the sliding seat through the open side, and the buckles on the two buttons are respectively engaged in the corresponding slots. When the two buttons are pressed, the two buckles are respectively disengaged from the two slots, so that the brewing chamber can be removed from the sliding seat for easy cleaning.

[0023] In an optional embodiment, the frame is further provided with a backrest, the backrest having a vertically extending strip-shaped opening; the outer periphery of the brewing chamber is provided with a liquid outlet, the liquid outlet passing through the strip-shaped opening and connecting to a liquid outlet connector to output coffee liquid; and / or

[0024] The back panel is provided with a first micro switch, a second micro switch, and a third micro switch from top to bottom. The power assembly is connected to the first micro switch, the second micro switch, and the third micro switch respectively. When the brewing chamber moves to the extraction position, the powder receiving position, and the slag scraping position respectively, the liquid outlet connector triggers the first micro switch, the second micro switch, and the third micro switch respectively. The first micro switch, the second micro switch, and the third micro switch send signals to the power assembly to stop the power assembly from outputting power.

[0025] In an optional embodiment, the tamping head assembly includes a tamping head base, a tamping head, and a tamping spring. The tamping head base has a cavity and is fixed to the inner side of the top plate. The tamping head is disposed within the cavity, with its lower end extending out of the cavity. A single tamping spring is disposed within the cavity, with its upper end abutting against the upper end of the cavity or the top plate, and its lower end abutting against the upper end of the tamping head. The axis of the tamping spring is collinear with the axis of the tamping head. This design makes the tamping head floating and provides a constant tamping force, ensuring the quality of coffee extraction.

[0026] This application also provides a fully automatic coffee machine, including a machine body and a brewing system as described in any of the above embodiments.

[0027] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: the brewing chamber of this application is always vertical, which solves the problem of uneven powder filling in horizontal applications, ensures the uniformity of powder filling and powder cake, and improves the quality of coffee liquid; at the same time, the components are matched and coordinated, making the overall structure of the brewing system compact, with small space occupation and strong versatility, and can be assembled into home or commercial coffee machines.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this application.

[0029] The overview of various implementations or examples of the technology described in this application is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0030] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts.

[0031] Figure 1 and Figure 2These are perspective views of the brewing chamber of the brewing system according to embodiments of this application at different positions.

[0032] Figure 3 This is an exploded view of the brewing system according to an embodiment of this application.

[0033] Figure 4 This is an exploded view of the brewing chamber assembly according to an embodiment of this application.

[0034] Figure 5 This is a cross-sectional view of the brewing chamber in the powder receiving position according to an embodiment of this application.

[0035] Figure 6 This is a cross-sectional view of the brewing chamber in the extraction position according to an embodiment of this application.

[0036] Figure 7 This is a cross-sectional view of the slag cake being pushed out of the brewing chamber by the slag pusher according to an embodiment of this application.

[0037] Figure 8 This is a cross-sectional view of the brewing chamber in the scraping position according to an embodiment of this application.

[0038] Figure label:

[0039] 1-Frame; 11-First side plate; 111-Slag outlet; 112-First vertical edge; 113-Convex arc part; 12-Second side plate; 13-Top plate; 14-Back support; 141-Strip opening; 15-First micro switch; 16-Second micro switch; 17-Third micro switch; 18-Switch cover; 19-Water inlet;

[0040] 2-Powder pressing head assembly; 21-Powder pressing head seat; 22-Powder pressing head; 23-Powder pressing spring; 24-Powder pressing head sealing ring;

[0041] 3-Brewing chamber assembly; 31-Brewing chamber body; 311-Stop flange; 312-Mounting hole; 313-Pushing part; 314-Liquid outlet; 315-Liquid outlet hole of brewing chamber; 32-Push rod; 321-Flange; 322-Liquid outlet hole of push rod; 33-Handle; 331-Button; 332-Snap-on; 34-Filter screen; 35-Liquid outlet connector; 36-Liquid outlet sealing ring; 37-Brewing sealing ring;

[0042] 4-Scraping component; 41-Scraping blade; 42-Rotating shaft; 43-Guide column; 44-Scraping spring;

[0043] 5-Power assembly; 51-Motor; 52-Motor mount; 521-Leg body; 522-Guide sleeve; 523-Channel; 53-Lead screw; 531-Through hole; 54-Sliding seat; 55-Guide positioning mechanism; 551-Stop; 5511-Hole; 552-Clutch ball; 553-Clutch ball spring; 554-Slide rail; 5541-First positioning hole; 5542-Second positioning hole; 5543-Clutch; 555-Chassis;

[0044] 6-Powder compact; 7-Powder compact;

[0045] 8-Slag bin. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0047] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of known functions and known components are omitted.

[0049] like Figures 1 to 8 As shown, this application provides a brewing system that can be applied to, for example, a fully automatic coffee machine, as a core component for extracting coffee liquid in a fully automatic coffee machine.

[0050] like Figures 1 to 3As shown, the brewing system of this application embodiment includes a frame 1, a powder pressing head assembly 2, a brewing chamber assembly 3, and a power assembly 5. The frame 1 provides structural support for the entire system, supporting all parts to form an organic whole. The frame 1 includes opposing first side plates 11 and second side plates 12, and a top plate 13 connecting the top ends of the first side plates 11 and second side plates 12, so that the frame 1 is inverted U-shape. The first side plate 11 is provided with a slag outlet 111, which can extend vertically for a certain length to facilitate slag discharge. In addition, the slag outlet 111 can extend to the top end of the first side plate 11 and continue to extend towards the top plate 13, so that powder can be fed into the slag outlet 111 near the upper part, so that the slag outlet 111 has both powder feeding and slag discharge functions. The middle part of the first vertical edge 112 of the first side plate 11 arches outward to form a convex arc portion 113.

[0051] The powder pressing head assembly 2 is located on the inner side of the top of the frame 1, specifically on the inner side of the top plate 13.

[0052] The brewing chamber assembly 3, serving as the structure for extracting coffee powder, is located within the area enclosed by the frame 1 and below the tamper head assembly 2. The brewing chamber assembly 3 and the tamper head assembly 2 cooperate to form a sealed space within which the coffee powder is extracted into coffee liquid. The brewing chamber assembly 3 includes a brewing chamber body 31 and a pusher rod 32. The brewing chamber body 31 contains a brewing chamber, the upper end of which is open and directly opposite the tamper head assembly 2. The pusher rod 32 is movably disposed within the brewing chamber. Specifically, the upper end of the pusher rod 32 is located within the brewing chamber and is tightly fitted against the chamber wall to form a movable seal. The lower end of the pusher rod 32 extends from the lower end of the brewing chamber, and the pusher rod 32 moves within the brewing chamber in a piston-like motion. A scraper member 4 is rotatably mounted near the periphery of the upper end of the brewing chamber body 31.

[0053] The power assembly 5 is a structure that generates power to move the brewing chamber assembly 3 up and down, completing the coffee brewing process. Specifically, the power assembly 5 is fixed to the frame 1 and connected to the brewing chamber 31, driving the brewing chamber 31 to reciprocate vertically, moving it closer to or away from the tamper assembly 2. During this reciprocating motion, the brewing chamber 31 has extraction positions arranged sequentially from top to bottom (see [link to relevant documentation]). Figure 6 ), powder collection location (see Figure 5 ) and the location of the slag scraper (see Figure 8 At the slag scraping position, the slag scraping component rotates under the action of the convex arc 113 and pushes the slag cake at the top of the brewing chamber 31 out of the slag outlet 111.

[0054] The brewing chamber 31 of the brewing system in this embodiment is always in a vertical position, regardless of whether it is filling powder or other movements, to ensure uniform filling of powder and powder cake, and improve the taste of brewed coffee liquid; moreover, the entire brewing system has a compact structure, small size and small space occupation.

[0055] In some embodiments, such as Figure 3 As shown, the power assembly 5 includes a motor 51, a motor mount 52, a lead screw 53, and a guide and positioning mechanism 55. The motor mount 52 is fixed to the lower end of the frame 1, and the motor mount 52 has a channel 523 extending to its upper and lower ends. (See Figure 55 for details.) Figure 5 and Figure 6 A lead screw 53 passes through a channel 523, with its upper end extending out of the channel 523 and fixed to a sliding seat 54. A motor 51 is fixed to a motor base 52 and threadedly connected to the lead screw 53 via a transmission mechanism. The transmission mechanism may include, for example, a drive wheel fixed to the output shaft of the motor 51 and a transmission gear ring meshing with the drive wheel. Both the inner and outer circumferences of the transmission gear ring have teeth. The transmission gear ring is located within the channel 523 and is rotatable. The lead screw 53 passes through the transmission gear ring and meshes with the teeth on the inner circumference of the transmission gear ring; the teeth on the outer circumference of the transmission gear ring mesh with the drive wheel. Thus, when the motor 51 starts, it can drive the lead screw 53 to move up and down. Preferably, the motor 51 is a bidirectional motor capable of both forward and reverse rotation, so as to drive the lead screw 53 to move the sliding seat 54 in a reciprocating linear motion.

[0056] The brewing chamber 31 is located within the sliding seat 54 and can reciprocate linearly up and down (in the vertical direction) together with the sliding seat 54. The lower end of the push rod 32 extends out of the brewing chamber 31 and is connected to the guide positioning mechanism 55. When the lead screw 53 reciprocates linearly, it drives the sliding seat 54 and the brewing chamber 31 to move linearly synchronously. Under the action of the guide positioning mechanism 55, the push rod 32 can move synchronously with the brewing chamber 31 or be positioned and held still. By setting the guide positioning mechanism 55, the push rod 32 can be positioned or depositioned, so that the push rod 32 can either move with the brewing chamber 31 or be positioned by the guide positioning mechanism 55 and not move with the brewing chamber 31, depending on the needs of the brewing process.

[0057] In some embodiments, such as Figure 3 As shown, the guide positioning mechanism 55 includes a stop 551 and a slide rail 554. The stop 551 is fixed to the motor base 52 and extends vertically into the channel 523 of the motor base 52. The stop 551 has a hole 5511 on its outer periphery near its top. The hole 5511 has a retaining bead 552 that can extend out or retract into it. Specifically, a retaining bead spring 553 is provided in the hole 5511. One end of the retaining bead spring 553 is connected to the bottom of the hole, and the other end of the retaining bead spring 553 is connected to the retaining bead 552, so that the retaining bead 552 is elastically connected to the hole 5511. When an external force is applied, the retaining bead 552 compresses the retaining bead spring 553 and retracts into the hole 5511. When the external force is removed, the retaining bead 552 pops out of the hole 5511 under the action of the retaining bead spring 553.

[0058] The slide rail 554 is a vertically arranged cylindrical shape, fitted over the stop 551, and the two are inserted together into the channel 523 of the motor base 52. The slide rail 554 is connected to the lower end of the push rod 32 so that the slide rail 554 can move synchronously with the push rod 32. The outer periphery of the slide rail 554 is provided with two positioning holes arranged vertically, namely the first positioning hole 5541 and the second positioning hole 5542, with the first positioning hole 5541 located below the second positioning hole 5542. When the motor 51 drives the lead screw 53 to reciprocate the brewing chamber 31 in the vertical direction, the push rod 32 moves with the brewing chamber 31 and drives the slide rail 554 to move up and down along the stop seat 551. This allows the two positioning holes on the slide rail 554 to be aligned with the locking beads 552. The locking beads 552 extend into the corresponding positioning holes to position the slide rail 554, preventing it from moving further. Since the slide rail 554 is connected to the lower end of the push rod 32, the push rod 32 also does not move with the brewing chamber 31. In this way, the relative positional relationship between the push rod 32 and the brewing chamber 31 can be changed, allowing the push rod 32 to move like a piston within the brewing chamber 31. This frees up space within the brewing chamber 31 for loading powder or occupies space within the brewing chamber 31 to push the slag cake out of the brewing chamber 31.

[0059] To improve the stability of the positioning of the retaining ball 552 on the slide rail 554, two holes 5511 can be provided on the outer periphery of the stop 551. The two holes 5511 are located at the same height on the stop 551 and are set at 180 degrees (i.e., the axes of the two holes 5511 are collinear). Correspondingly, there are two first positioning holes 5541 and two second positioning holes 5542 on the slide rail 554. During the up and down movement of the slide rail 554, the two first positioning holes 5541 can simultaneously face the two retaining balls 552, and the two second positioning holes 5542 can also simultaneously face the two retaining balls 552, so that the two retaining balls 552 can simultaneously engage in the two first positioning holes 5541 or the two second positioning holes 5542.

[0060] This application utilizes two positioning holes at different heights to create a locking mechanism in the brewing chamber 31 during its vertical movement, enabling asynchronous operation of the brewing chamber 31 and the pusher rod 32, thus coordinating the related pusher and coffee grounds loading actions. The brewing chamber 31 is placed vertically when loading coffee grounds, and the tamping is also done vertically after loading, ensuring that the coffee grounds loaded vertically in the brewing chamber 31 have a relatively consistent density in the compressed coffee pouch 6, guaranteeing the quality of the coffee.

[0061] In some embodiments, such as Figure 6As shown, the lead screw 53 has through holes 531 extending through both ends along its axial direction. The upper end of the through hole 531 communicates with the sliding seat 54. The lower end of the pusher rod 32 extends into the through hole 531 through the upper end of the through hole 531, and the slide rail 554 extends into the through hole 531 through the lower end of the through hole 531 and connects to the lower end of the pusher rod 32. The pusher rod 32 and the slide rail 554 are housed within the lead screw 53, resulting in a compact structure.

[0062] In this application, the sliding seat 54 supports the brewing chamber 31 and moves it linearly up and down. The lead screw 53, driven by the motor 51, is connected to the bottom of the sliding seat 54, so that the force point is centered and coincides with the reverse resistance point in the chamber during extraction, resulting in uniform force distribution. The entire system has a long service life and low failure rate. Compared with other brewing systems in the prior art that apply force from the side through a lever arm, which is not only structurally complex but also prone to lever arm deformation, leading to eccentricity of moving parts and other failures.

[0063] Continue to combine Figure 3 The motor base 52 includes a base body 521 and a guide sleeve 522 extending downward from the middle of the bottom of the base body 521. A channel 523 extends from the top of the base body 521 to the bottom of the guide sleeve 522. By providing the guide sleeve 522, the length of the channel 523 is extended while minimizing the volume of the motor base 52, so that both the stop 551 and the slide rail 554 are placed inside the motor base 52, protecting both and guiding the movement of the slide rail 554.

[0064] like Figure 1 and Figure 2 As shown, the lower ends of the first side plate 11 and the second side plate 12 are located on opposite sides of the base 521 and are respectively locked to the base 521. The lower ends of both sides of the U-shaped frame are directly screwed to the motor base 52 of the power assembly 5. The powder pressing head assembly 2 and the sliding seat 54 move up and down between the motor base 52 and the top plate 13 of the U-shaped frame. The U-shaped frame as a whole forms a high-strength, closed-loop circuit with high structural strength, few stressed parts, and a low failure rate. Even when high pressure is generated in the sealed space formed by the brewing chamber assembly 3 and the powder pressing head assembly 2 during extraction, and there are large opposing forces at the upper and lower ends, stability can be maintained.

[0065] like Figure 3 As shown, the bottom of the stop 551 is provided with a base 555. The stop 551 extends into the channel 523, and the base 555 of the stop 551 is located outside the guide sleeve 522 and is fixedly connected to the bottom end of the guide sleeve 522. This structure is reasonably designed and facilitates the fixed connection between the stop 551 and the motor base 52.

[0066] Continue to combine Figure 3 The upper inner periphery of the slide rail 554 is provided with a locking slot 5543. For example... Figure 4As shown, the lower end of the push rod 32 is provided with a flange 321, which is inserted into the slot 5543 of the slide rail 554 to achieve a fixed connection between the push rod 32 and the slide rail 554.

[0067] Continue to combine Figure 4 The lower end of the brewing chamber 31 is provided with a downward protruding push part 313. When the brewing chamber 31 moves downward until the push part 313 abuts against the upper surface of the flange 321 at the lower end of the slag pusher 32, it will drive the slag pusher 32 to move downward together. When the slag pusher 32 moves downward, it will drive the slide rail 554 to overcome the force of the retaining ball 552, causing the retaining ball 552 to retract into the positioning hole and release the restriction on the slide rail 554, so that the slide rail 554 and the slag pusher 32 move downward together.

[0068] In some embodiments, such as Figure 4 As shown, a stop flange 311 is provided on a partial periphery of the top of the brewing chamber 31, and a mounting hole 312 is provided at the top of the brewing chamber 31. The slag scraping component 4 includes a scraper blade 41, a rotating shaft 42, a guide post 43, and a scraper spring 44. The scraper blade 41 is generally arc-shaped and includes a front end and an end end. The guide post 43 is located at the end of the scraper blade 41 and abuts against the first vertical edge 112 of the first side plate 11 (see...). Figure 1 and Figure 2 As the brewing chamber 31 reciprocates vertically, the guide column 43 slides up and down along the first vertical edge 112. The rotating shaft 42 is located at the bottom of the scraper 41 and between the front and rear ends of the scraper 41. The rotating shaft 42 is rotatably connected to the mounting hole 312 so that the scraper 41 can rotate at the top of the brewing chamber 31 and has an initial position and a scraping position relative to the top of the brewing chamber 31 during the rotation. In the initial position, the front end of the scraper 41 abuts against the stop edge 311, so that the scraper 41 is held in the initial position and avoids the upper opening of the brewing chamber of the brewing chamber 31. When the brewing chamber 31 moves downward, it drives the scraper 41 downward as well. During the downward movement, the guide column 43 gradually slides from above onto the convex arc portion 113. The downward slope of the convex arc portion 113 generates a rotational force, causing the scraper 41 to overcome the stop of the stop edge 311 and rotate towards the scraping position. The oscillation generated by the rotation scrapes off the slag cake 7 at the top of the brewing chamber 31 and pushes it out through the slag outlet 111. The scraper spring 44 acts on the scraper 41 to apply a force to the scraper 41 to reset it from the scraping position to the initial position. When the guide column 43 slides downward away from the convex arc portion 113, the convex arc portion 113 releases its force on the guide column 43, and the scraper 41 resets to the initial position under the action of the scraper spring 44.

[0069] For example, the scraper spring 44 can be a torsion spring, which is sleeved on the rotating shaft 42, with its two ends abutting against the brewing chamber 31 and the scraper blade 41, respectively. Under the torsion of the torsion spring, the scraper blade 41 has an initial rotational force, which, together with the stop edge 311 on the brewing chamber 31, positions the scraper blade 41 against the stop edge 311, preventing it from swinging arbitrarily.

[0070] In some embodiments, such as Figure 4 As shown, a handle 33 is provided on the outer side of the brewing chamber 31, and buttons 331 are provided on opposite sides of the handle 33. Each button 331 has a latch 332. The sliding seat 54 is a frame structure including a top and four sides connected in sequence, with the top and one side open. Slots are provided on the two sides of the sliding seat 54 adjacent to the open side. The brewing chamber 31 can be inserted into the sliding seat 54 through the open side. After the brewing chamber 31 is inserted into the sliding seat 54, the latches 332 on the two buttons 331 respectively engage in the corresponding slots. When the two buttons 331 are pressed, the two latches 332 disengage from the two slots, allowing the brewing chamber 31 to be removed from the sliding seat 54 and moved out through the open side. By providing a button 331 with a buckle 332 on the handle 33 of the brewing chamber 31 and a slot that cooperates with the bayonet 5543 on the sliding seat 54, a detachable connection between the brewing chamber 31 and the sliding seat 54 can be achieved, so as to facilitate the removal and cleaning of the brewing chamber 31.

[0071] Continue to combine Figure 4 The brewing chamber 31 is roughly cylindrical, and the brewing chamber inside is roughly cylindrical. The upper end of the slag pusher 32 forms a disc-like structure, and a filter screen 34 is fixed on the disc-like structure. The filter screen 34 has many small holes.

[0072] In some embodiments, such as Figure 3 As shown, the frame 1 is also provided with a back panel 14, which is used to block the rear side of the frame 1. The back panel 14 has a vertically extending strip-shaped opening 141. The outer periphery of the brewing chamber 31 is provided with a liquid outlet 314, which passes through the strip-shaped opening 141 and connects to the liquid outlet connector 35 to output the brewed coffee liquid. By providing a strip-shaped opening 141 on the back panel 14, the liquid outlet 314 can be avoided, so that the liquid outlet 314 is always connected to the liquid outlet connector 35. It is understood that the liquid outlet connector 35 will move up and down with the brewing chamber 31; in addition, a liquid outlet sealing ring 36 is provided at the connection between the liquid outlet 314 and the liquid outlet connector 35 to ensure the sealing of the connection during the assembly and disassembly of the brewing chamber assembly 3 and to prevent leakage.

[0073] Continue to combine Figure 3The brewing system also includes three microswitches: a first microswitch 15, a second microswitch 16, and a third microswitch 17, arranged sequentially from top to bottom on the rear side of the back panel 14. The motor 51 of the power assembly 5 is connected to the first microswitch 15, the second microswitch 16, and the third microswitch 17. When the brewing chamber 31 moves to the extraction position, the powder receiving position, and the dregs scraping position, the liquid outlet 35 triggers the first microswitch 15, the second microswitch 16, and the third microswitch 17, respectively. These switches send signals to the motor 51, causing it to stop and cease power output. Therefore, the liquid outlet 35 not only dispenses coffee liquid but also, during its up-and-down movement, abuts the levers of the three microswitches, triggering them and providing a position signal to the electronic board of the brewing system. This signal, through the program, instructs the motor 51 to perform the next action, causing the brewing chamber assembly 3 to execute the next movement.

[0074] like Figure 3 As shown, the brewing system also includes a switch cover 18, which is used to cover three microswitches and protect them.

[0075] In some embodiments, such as Figure 3 As shown, the tamping head assembly 2 includes a tamping head seat 21, a tamping head 22, and a tamping spring 23. The tamping head seat 21 has a cavity and is fixed to the inner side of the top plate 13. The tamping head 22 is disposed in the cavity, with its lower end extending out of the cavity, for tamping the coffee powder in the brewing chamber. The tamping spring 23 is a single spring disposed in the cavity, with its upper end abutting against the upper end of the cavity or the top plate 13, and its lower end abutting against the upper end of the tamping head 22. The axis of the tamping spring 23 is collinear with the axis of the tamping head 22.

[0076] In this application, the tamping head assembly 2 utilizes a tamping spring 23 acting between the tamping head 22 and the frame 1 (or tamping head base 21). When the brewing chamber 31 moves upward, causing the coffee grounds inside to be tamped against the lower end of the tamping head 22, the spring force becomes the tamping force. Conventional coffee machine grinding systems produce varying amounts of ground coffee, sometimes too much and sometimes too little. If the tamping head 22 is fixed, the tamping force is greater when there is more coffee and less when there is less, resulting in inconsistent tamping force that affects the quality of coffee extraction. The floating tamping head 22 and constant tamping force of this application ensure the quality of coffee extraction.

[0077] The following is combined Figures 5 to 8 The working process of the brewing system according to the embodiments of this application will be described as follows:

[0078] Before the brewing system is started, the sliding seat 54 drags the brewing chamber 31 to its lowest position, and the slag pusher 32 is at its highest position inside the brewing chamber 31, occupying the entire brewing chamber. Figure 8 The position is shown. At this time, the lower end of the slide rail 554 abuts against the bottom of the stop seat 551, and the two locking balls 552 on the stop seat 551 respectively engage with the two second positioning holes 5542 on the slide rail 554, restricting the slide rail 554 and the push rod 32 from moving together with the brewing chamber 31; when the brewing system receives the brewing command, the motor 51 starts and rotates forward, driving the lead screw 53 to move the sliding seat 54 upward. The sliding seat 54 supports the brewing chamber 31 and moves upward. Due to the limiting effect of the locking balls 552, the slide rail 554 and the push rod 32 do not move upward with the brewing chamber 31, but remain stationary, which is equivalent to the push rod 32 performing piston movement in the brewing chamber. That is, it is equivalent to the push rod 32 continuously descending in the brewing chamber until the upper end of the push rod 32 is located at the bottom of the brewing chamber, freeing up space in the brewing chamber, so that the brewing chamber forms a concave cavity for receiving powder. At this time, the brewing chamber 31 is in the powder receiving position, see Figure 5 Furthermore, the liquid outlet connector 35 triggers the second micro switch 16 to stop the motor 51, keeping the brewing chamber 31 in the powder receiving position, and allowing the powder to flow through the powder inlet (i.e., Figure 1 Coffee powder is loaded into the brewing chamber from the upper part of the outlet 111. After loading, the motor 51 rotates forward and drives the lead screw 53 to move the sliding seat 54 upward. The sliding seat 54 supports the brewing chamber 31 and moves it upward, allowing the coffee powder in the brewing chamber to reach the tamping head 22 and be compacted to form a coffee cake 6, thus completing the tamping. At this time, the liquid outlet 35 triggers the first micro switch 15, causing the motor 51 to stop rotating. In addition, during the upward movement of the brewing chamber 31, since the upper end of the push rod 32 has reached the bottom of the brewing chamber, the push rod 32 is driven upward by the pushing action of the bottom of the brewing chamber. During the upward movement of the push rod 32, the slide rail 554 is pulled upward, and the retaining ball 552 is disengaged from the second positioning hole 5542, releasing the restriction on the slide rail 554.

[0079] After tamping, hot water is drawn into the water inlet 19 on the frame 1 to extract coffee from the coffee pouch 6. Because the lower end of the tamping head 22 is equipped with a tamping head sealing ring 24, and the upper periphery of the pusher rod 32 is equipped with a brewing sealing ring 37 between it and the wall of the brewing chamber, a sealed brewing space is formed between the tamping head 22 and the brewing chamber 31 for coffee extraction. The coffee grounds and coffee liquid are separated by numerous small holes in the filter screen. The coffee liquid flows out through these holes and then exits from the pusher rod outlet 322 and the brewing chamber outlet 315. (See [reference]). Figure 6 .

[0080] After coffee extraction is complete, motor 51 reverses, and sliding seat 54 supports brewing chamber 31, moving it downwards. Brewing chamber 31 and coffee grounds separate from tamping head 22. Push rod 32 and slide rail 554 move downwards along with brewing chamber 31. When the first positioning hole 5541 on slide rail 554 aligns with retaining bead 552, retaining bead 552 enters the first positioning hole 5541, limiting slide rail 554. Due to the resistance of the retaining bead, push rod 32 and slide rail 554 no longer move downwards with brewing chamber 31; only brewing chamber 31 moves downwards on its own, equivalent to push rod 32 performing piston-like motion within the brewing chamber. This pushes the coffee cake 7 on push rod 32 to the edge of the upper opening of the brewing chamber. Figure 7 As shown, this indicates the completed slag pushing state. After the slag cake 7 is pushed out by the slag pushing rod 32 to the upper opening edge of the brewing chamber 31, the pushing part 313 at the bottom of the brewing chamber 31 abuts against the flange 321 of the slag pushing rod 32. When the brewing chamber 31 continues to move downward, it pushes the slag pushing rod 32 and the slide rail 554 downward together. The retaining bead 552 jumps out of the first positioning hole 5541. At the same time, the guide post 43 on the scraper 41 gradually moves from top to top of the convex arc 113, driving the scraper 41 to rotate and scrape off the slag cake 7. When the slide rail 554 moves to the second positioning hole 5542 and is opposite to the retaining bead 552, the retaining bead 552 is engaged in the second positioning hole 5542, and the slag scraping is completed. See Figure 8 At this point, the liquid outlet 35 triggers the third micro switch 17, and the motor 51 stops rotating. The coffee cake 7 is scraped off and falls into the side storage bin 8. The dropping of the coffee cake and the dispensing of the coffee liquid are staggered, effectively achieving separation of the coffee cake and the liquid. After scraping off the coffee cake, the system waits for the next brewing command. The coffee cake 7 in this brewing system has a high drop position between the coffee cake outlet 111 and the coffee cake receiving position, resulting in a large stacking space after the coffee cake 7 falls off. The storage bin 8 can hold a large number of coffee cakes 7, reducing the need for frequent emptying. Furthermore, the coffee cake 7 is scraped horizontally and placed into the side storage bin 8, effectively achieving separation of the coffee cake and the liquid. After scraping off the coffee cake, the brewing system is in the initial position, which is also the position where the coffee cake is scraped off. The brewing system waits for the next brewing command in the initial position and cycles through the above-mentioned actions of loading coffee powder, tamping coffee powder, extraction, pushing coffee cake, and scraping coffee cake to complete the entire brewing process.

[0081] In this embodiment of the brewing system, the brewing chamber 31 remains vertical throughout the powder loading and other processes, moving only up and down. This ensures uniform powder loading and distribution to the coffee pouch 6, improving the quality of the coffee liquid. Furthermore, this application features a simplified structure, occupies little space, and is highly versatile, making it convenient and suitable for installation in home or commercial coffee machines.

[0082] This application also provides a fully automatic coffee machine, which includes a machine body and a brewing system according to any of the above embodiments. Since the fully automatic coffee machine includes the above-described brewing system, it inevitably possesses the advantages of the brewing system, such as uniform powder loading and coffee pouch 6, and a better-tasting brewed coffee liquid.

[0083] The above description is intended to be illustrative and not restrictive. Those skilled in the art can make variations, modifications, substitutions, and alterations to the above embodiments within the scope of this disclosure. Moreover, the above examples (or one or more of them) can be used in combination with each other, and these embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A brewing system, characterized in that, include: The skeleton (1) includes a first side plate (11), a second side plate (12) and a top plate (13) connecting the top ends of the first side plate (11) and the second side plate (12) to make the skeleton (1) in an inverted U shape. The first side plate (11) is provided with a slag outlet (111). The middle part of the first vertical edge (112) of the first side plate (11) arches outward to form a convex arc part (113). The powder pressing head assembly (2) is located on the top inner side of the frame (1); The brewing chamber assembly (3) is located in the area enclosed by the frame (1) and below the powder pressing head assembly (2). The brewing chamber assembly (3) includes a brewing chamber (31) and a slag pusher (32) movably disposed in the brewing chamber (31). A slag scraping member (4) is rotatably provided on the top of the brewing chamber (31) near the periphery. The power assembly (5), which is fixed to the frame (1) and connected to the brewing chamber (31), is used to drive the brewing chamber (31) to reciprocate in the vertical direction to move closer to or away from the powder pressing head assembly (2). During the reciprocating motion, the brewing chamber (31) has an extraction position, a powder receiving position and a slag scraping position arranged sequentially from top to bottom. At the slag scraping position, the slag scraping member (4) rotates under the action of the convex arc part (113) and pushes the slag cake at the top of the brewing chamber (31) out of the slag outlet (111).

2. The brewing system according to claim 1, characterized in that, The power assembly (5) includes a motor (51), a motor base (52), a lead screw (53), and a guide positioning mechanism (55). The motor base (52) has a channel (523) extending to its upper and lower ends. The lead screw (53) passes through the channel (523), and the upper end of the lead screw (53) extends out of the channel (523) and is fixed with a sliding seat (54). The motor (51) is fixed on the motor base (52) and is threadedly connected to the lead screw (53) through a transmission mechanism to drive the lead screw (53) to move linearly along the channel (523). The brewing chamber (31) is located inside the sliding seat (54). The lower end of the slag pusher (32) extends out of the brewing chamber (31) and is connected to the guide positioning mechanism (55). When the lead screw (53) moves linearly, it drives the sliding seat (54) and the brewing chamber (31) to move linearly synchronously. Under the action of the guide positioning mechanism (55), the slag pusher (32) can move synchronously with the brewing chamber (31) or be positioned and kept still.

3. The brewing system according to claim 2, characterized in that, The guiding and positioning mechanism (55) includes: A stop (551) is fixed to the motor base (52) and extends vertically. The stop (551) has a hole (5511) on its outer periphery near its top. The hole (5511) has a retaining bead (552) that can extend out or retract into it. The slide rail (554) is a vertically arranged cylindrical tube. The slide rail (554) is sleeved on the outside of the stop (551) and connected to the lower end of the slag pusher (32). The outer periphery of the slide rail (554) is provided with two positioning holes arranged vertically. When the motor (51) drives the lead screw (53) to move the brewing chamber (31) reciprocally in the vertical direction, the brewing chamber (31) drives the slide rail (554) to move up and down along the stop seat (551) through the slag pusher (32), so that the two positioning holes on the slide rail (554) can be opposite to the locking bead (552) respectively. The locking bead (552) extends into the positioning hole opposite to it to position the slide rail (554) so ​​that the slide rail (554) and the slag pusher (32) do not move with the brewing chamber (31).

4. The brewing system according to claim 3, characterized in that, The lead screw (53) has through holes (531) extending through both ends along its axial direction. The upper end of the through hole (531) is connected to the sliding seat (54). The lower end of the push rod (32) extends into the through hole (531) through the upper end of the through hole (531). The slide rail (554) extends into the through hole (531) through the lower end of the through hole (531) and is connected to the lower end of the push rod (32).

5. The brewing system according to claim 3, characterized in that, The motor mount (52) includes a mount (521) and a guide sleeve (522) extending downward from the middle of the bottom of the mount (521), the channel (523) extending from the top of the mount (521) to the bottom of the guide sleeve (522); and / or The bottom of the stop (551) is provided with a base; the stop (551) extends into the channel (523), and the base of the stop (551) is located outside the guide sleeve (522) and is fixedly connected to the bottom end of the guide sleeve (522); and / or The lower ends of the first side plate (11) and the second side plate (12) are located on opposite sides of the seat (521) and are respectively locked to the seat (521).

6. The brewing system according to claim 1, characterized in that, The top edge of the brewing chamber (31) is provided with a stop edge (311), and the top of the brewing chamber (31) is provided with a mounting hole (312). The scraping component (4) includes a scraper blade (41), a rotating shaft (42) located at the bottom of the scraper blade (41), a guide post (43) located at the end of the scraper blade (41), and a scraper spring (44) that applies a restoring force to the scraper blade (41). The guide post (43) abuts against the first vertical edge (112) of the first side plate (11), and slides along the first vertical edge (112) when the brewing chamber (31) reciprocates in the vertical direction. The rotating shaft (42) is rotatably connected to the mounting hole (312) so that the scraper blade (41) can rotate relative to the top of the brewing chamber (31) to have an initial position and a scraping position. When the front end of the scraper (41) abuts against the stop edge (311), and the brewing chamber (31) moves downward, causing the guide column (43) on the scraper (41) to gradually slide from above onto the convex arc portion (113), the guide column (43) drives the scraper (41) to overcome the stop edge (311) and rotate towards the scraping position, pushing the slag cake at the top of the brewing chamber (31) out of the slag outlet (111), and the guide column (43) slides downward away from the convex arc portion (113), the convex arc portion (113) releases its effect on the guide column (43), and the scraper (41) returns to the initial position under the action of the scraper spring (44).

7. The brewing system according to claim 2, characterized in that, The outer side of the brewing chamber (31) is provided with a handle (33), and buttons (331) are provided on opposite sides of the handle (33), and buckles (332) are provided on the buttons (331); The sliding seat (54) is a frame structure including a top and four sides connected in sequence. The top and one of the sides are open. The two sides of the sliding seat (54) adjacent to the open side are respectively provided with slots. The brewing chamber (31) is inserted into the sliding seat (54) through the open side. The buckles (332) on the two buttons (331) are respectively inserted into the corresponding slots. When the two buttons (331) are pressed, the two buckles (332) are respectively disengaged from the two slots so that the brewing chamber (31) can be removed from the sliding seat (54).

8. The brewing system according to claim 1, characterized in that, The frame (1) is also provided with a backrest (14), and the backrest (14) is provided with a vertically extending strip-shaped opening (141); the outer periphery of the brewing chamber (31) is provided with a liquid outlet (314), and the liquid outlet (314) passes through the strip-shaped opening (141) and is connected to the liquid outlet connector (35) to output coffee liquid; and / or The back panel (14) is provided with a first micro switch (15), a second micro switch (16) and a third micro switch (17) from top to bottom on the rear side. The power assembly (5) is connected to the first micro switch (15), the second micro switch (16) and the third micro switch (17) respectively. When the brewing chamber (31) moves to the extraction position, the powder receiving position and the slag scraping position respectively, the liquid outlet connector (35) triggers the first micro switch (15), the second micro switch (16) and the third micro switch (17) respectively. The first micro switch (15), the second micro switch (16) and the third micro switch (17) send signals to the power assembly (5) respectively so that the power assembly (5) stops outputting power.

9. The brewing system according to claim 1, characterized in that, The powder pressing head assembly (2) includes a powder pressing head seat (21), a powder pressing head (22), and a powder pressing spring (23). The powder pressing head seat (21) has a cavity and is fixed to the inner side of the top plate (13). The powder pressing head (22) is located in the cavity, and the lower end of the powder pressing head (22) extends out of the cavity. The powder pressing spring (23) is a single spring located in the cavity. The upper end of the powder pressing spring (23) abuts against the upper end of the cavity or the top plate (13), and the lower end of the powder pressing spring (23) abuts against the upper end of the powder pressing head (22). The axis of the powder pressing spring (23) is collinear with the axis of the powder pressing head (22).

10. A fully automatic coffee machine, comprising a body, characterized in that, It also includes the brewing system according to any one of claims 1 to 9.

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