Brewing devices and beverage machines

Abstract

This utility model provides a brewing device and a beverage machine. The brewing device includes: a base; a brewing cylinder connected to the base; a first piston having a first working surface, the first working surface being planar; a scraping mechanism connected to the brewing cylinder, the scraping mechanism including a transmission rod and a scraping component connected by transmission, the transmission rod being pivotally connected to the brewing cylinder, the scraping component having a scraping plane adapted to the first working surface; and an actuating part disposed in the base, the brewing cylinder driving the scraping mechanism to move towards the actuating part, causing the actuating part to press against the transmission rod, driving the transmission rod to rotate relative to the brewing cylinder, thereby driving the scraping component to move along the first working surface from an initial position to a scraping position. This application can press powder cakes of uniform thickness, avoiding channel effects in the powder cakes during extraction, and requires less scraping space while achieving clean scraping.

Description

Technical Field

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

[0002] Beverage machines such as coffee machines typically have a brewing device. This device compresses the powder into a cake and brews it to create the beverage. The brewing device usually includes a brewing cylinder and a piston, which is at least partially located within the cylinder. During operation, the piston compresses the powder into a cake, and water is then poured into the brewing cylinder. The water passes through the cake to extract the powder and produce the beverage.

[0003] As disclosed in US5307734A, an existing brewing apparatus has a peeling device (i.e., a scraping mechanism) connected to the brewing cylinder and rotating relative to it to peel off the powder cake. Due to limitations in rotational space and the need to ensure the cleanliness of the powder cake peeling (i.e., scraping), the piston surface used to extrude the brewing powder in this type of brewing apparatus is often curved. The powder cake formed by pressing with a curved surface typically exhibits uneven thickness, being thicker at the outer diameter and thinner at the center. This uneven thickness can lead to channeling during extraction, reducing the quality of the extracted beverage.

[0004] To avoid channeling effects, another brewing device is disclosed in EP1774881B1. This brewing device completely changes the layout and relative drive relationship of the brewing device disclosed in US5307734A. Although the brewing device disclosed in EP1774881B1 avoids channeling effects, the overall volume of the brewing device is greatly increased, which puts higher demands on the space layout of the beverage machine that needs to accommodate the brewing device. Utility Model Content

[0005] The purpose of this invention is to provide a brewing device and a beverage machine having the brewing device, wherein the scraping mechanism is connected to the brewing cylinder and rotates relative to the brewing cylinder, so as to maintain the required scraping space and the cleanliness of scraping, while avoiding the formation of channel effect of powder cake during the extraction process.

[0006] To achieve the above-mentioned utility model objectives, this utility model provides a brewing device, comprising: seat body; A brewing cylinder, which is connected to the base and is movable relative to the base; A first piston, at least partially placed inside the brewing tank and movable relative to the brewing tank, the first piston having a first working surface, the first working surface being planar; A slag scraping mechanism is connected to the brewing cylinder. The slag scraping mechanism includes a transmission rod and a slag scraping component that are connected by transmission. The transmission rod is pivotally connected to the brewing cylinder. The slag scraping component has a slag scraping plane that is adapted to the first working surface. The slag scraping component has an initial position and a slag scraping position relative to the brewing cylinder. An actuating part is disposed on the base body. The brewing cylinder drives the slag scraping mechanism to move toward the actuating part, so that the actuating part presses against the transmission rod and drives the transmission rod to rotate relative to the brewing cylinder in a first direction, thereby driving the slag scraping component to move along the first working surface from the initial position to the slag scraping position.

[0007] As a further improvement of one embodiment of the present invention, the brewing cylinder has a first movement stroke and a second movement stroke toward the actuating part; in the first movement stroke, the actuating part disengages from the transmission rod, and the scraper is located at the initial position; in the second movement stroke, the first working surface is flush with or protrudes from the end face of the brewing cylinder, the actuating part abuts against the transmission rod, and the scraper moves from the initial position to the scraping position.

[0008] As a further improvement of one embodiment of the present invention, the first working surface is constructed as a horizontal surface. During the second stroke, the first piston moves synchronously with the brewing cylinder, and the transmission rod rotates relative to the brewing cylinder in the first direction so that the scraping plane moves relative to the first working surface to perform a horizontal scraping action.

[0009] As a further improvement of one embodiment of this utility model, the seat is provided with a cam base, and the first piston is provided with an elastic limiting component that cooperates with the cam base; the brewing cylinder drives the first piston to move toward the actuating part until the cam base abuts against the elastic limiting component to limit the movement of the first piston toward the actuating part, the first working surface is located inside the brewing cylinder, and the scraper is located in the initial position; when the brewing cylinder moves toward the actuating part until the actuating part contacts the transmission rod, the first working surface is flush with or protrudes from the end face of the brewing cylinder.

[0010] As a further improvement of one embodiment of the present invention, during the process of the slag scraper moving from the initial position to the slag scraping position, the moving direction of the slag scraper is parallel to the first working surface.

[0011] As a further improvement of one embodiment of the present invention, the slag scraper is slidably connected to the brewing tank, and one of the brewing tank and the slag scraper is provided with a guide recess and the other is provided with a guide protrusion that cooperates with the guide recess.

[0012] As a further improvement of one embodiment of the present utility model, the transmission rod includes a braked part that contacts the actuating part and a connecting part that is limited and connected to the scraper. The braked part and the connecting part are located on both sides of the rotation axis of the transmission rod. One of the connecting part and the scraper is provided with a transmission groove, and the other is provided with a transmission shaft, wherein the transmission shaft is slidably connected to the transmission groove.

[0013] As a further improvement of one embodiment of the present invention, the seat includes a main body, a clearance portion connected to the main body, and a guide slope connecting the main body and the clearance portion. The clearance portion is connected to one end of the main body near the actuating portion, and the clearance portion is recessed relative to the main body to provide space for the rotation of the transmission rod. The brewing cylinder moves in a direction away from the actuating portion, causing the guide slope to press against the transmission rod, driving the transmission rod to rotate in a direction opposite to the first direction, thereby driving the slag scraper to move from the slag scraping position to the initial position.

[0014] As a further improvement of one embodiment of the present invention, the movement direction of the brewing cylinder is perpendicular to the first working surface, and when the slag scraper is in the initial position, the extension direction of the transmission groove is perpendicular to the first working surface.

[0015] As a further improvement of one embodiment of the present utility model, the brewing tank is provided with the guide recess, the extension direction of the guide recess is parallel to the first working surface, and the brewing tank also includes a clearance area provided at one end of the guide recess, the extension direction of the clearance area is consistent with the extension direction of the guide recess. When the scraper is in the scraping position, the guide protrusion is located in the clearance area, which allows the scraper to rotate a preset angle relative to the brewing tank.

[0016] As a further improvement of one embodiment of the present invention, the guide recess is constructed as a guide groove, and the brewing cylinder includes a first groove wall and a second groove wall forming the guide groove. The second groove wall is closer to the actuating part relative to the first groove wall, and the protrusion height of one end of the second groove wall is reduced to form the clearance area.

[0017] As a further improvement of one embodiment of the present invention, the brewing cylinder is provided with the guide recess, the guide recess includes a first guide groove and a second guide groove connected together, the extension direction of the first guide groove is parallel to the first working surface, the second guide groove is constructed as an arc-shaped guide groove, the length of the first guide groove is greater than the length of the second guide groove, when the slag scraper moves to the slag scraping position, the guide protrusion enters the second guide groove, the second guide groove allows the slag scraper to rotate relative to the brewing cylinder by a preset angle.

[0018] As a further improvement of one embodiment of the present invention, it also includes a second piston disposed on the seat, the second piston having a second working surface, the second working surface being constructed as a plane parallel to the first working surface; the first working surface, the second working surface and the brewing cylinder together define the brewing cavity; The second piston moves relative to the first piston to reduce or expand the space of the brewing chamber; the second piston moves toward the first piston to squeeze the powder to be brewed in the brewing chamber through the first working surface and the second working surface.

[0019] To achieve the above objectives, this utility model also provides a beverage machine, comprising: The brewing device described in any of the above embodiments; A grinding device, used to grind a material to be ground into a powder to be brewed; A feeding device is used to receive the powder to be brewed and to transport the powder to be brewed into the brewing device. A flow path system for supplying water to the brewing device to brew the powder to be brewed, in order to form a beverage; Beverage outlet, used to distribute the beverages output from the flow path system. As a further improvement of one embodiment of the present invention, the brewing device further includes a second piston disposed on the base, the first piston being movable relative to the second piston, the second piston having a second working surface opposite to the first piston, the second working surface being constructed as a plane parallel to the first working surface; the second piston being able to extend into the brewing cylinder; one of the first piston and the second piston being provided with an inlet flow path communicating with the flow path system, and the other being provided with an outlet flow path communicating with the flow path system.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: by constructing the first working surface of the first piston as a plane, the force applied when the first piston squeezes the powder to be brewed is more uniform, which can form a powder cake of uniform thickness. This can avoid the formation of channel effect in the powder cake during the extraction process and ensure the quality of the beverage brewing. The slag scraping mechanism is connected to the brewing cylinder and rotates relative to the brewing cylinder, which can simplify the structure, make the overall device occupy less space, and scrape the slag cleanly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the brewing device according to one embodiment of this application when it is in the first sub-stroke.

[0022] Figure 2 yes Figure 1 The diagram shown is a schematic of the brewing device at the end of the first sub-stroke.

[0023] Figure 3 yes Figure 2 A schematic diagram of a cross-section of the brewing device shown.

[0024] Figure 4 yes Figure 1 The diagram shown is a schematic of the brewing device at the end of the second sub-stroke.

[0025] Figure 5 yes Figure 1 The diagram shown is a schematic of the brewing device at the beginning of the second stroke.

[0026] Figure 6 yes Figure 1 The diagram shows the brewing device in the middle of its second stroke.

[0027] Figure 7 yes Figure 1 The diagram shows the brewing device at the end of its second stroke.

[0028] Figure 8 yes Figure 1 The diagram shows a state when the brewing tank moves away from the actuator.

[0029] Figure 9 yes Figure 8 The diagram shows a cross-sectional view of the brewing tank when it moves away from the actuator to a certain position.

[0030] Figure 10 yes Figure 1 A three-dimensional schematic diagram of the brewing tank shown.

[0031] Figure 11 yes Figure 1 The diagram shows a three-dimensional representation of the slag scraper.

[0032] Figure 12 This is a partial schematic diagram of a brewing device according to another embodiment of this application.

[0033] Figure 13 yes Figure 12 The diagram shows a three-dimensional representation of the brewing tank. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0035] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0036] This application provides a brewing device. The brewing device is used to brew powder to form a beverage.

[0037] This application also provides a beverage machine. The beverage machine includes the brewing device according to any embodiment of this application.

[0038] A beverage machine can be a coffee machine used to make coffee. When the beverage machine is a coffee machine, the powder to be brewed is coffee powder.

[0039] In one embodiment, the beverage machine further includes a grinding device for grinding materials into brewing powder, which can fall from the grinding device into the brewing device for brewing. When the beverage machine is a coffee machine, the grinding device is used to grind coffee beans into coffee powder.

[0040] The beverage machine also includes a flow path system and a beverage outlet. The flow path system supplies water to the brewing unit to brew the powder, thus creating the beverage. The beverage outlet dispenses the beverage from the flow path system into the user's cup.

[0041] See Figure 1 In one embodiment of this application, the brewing device includes a base 1 and a brewing cylinder 2. The brewing cylinder 2 is connected to the base 1 and is movable relative to the base 1. See also Figures 1 to 9 This diagram illustrates the brewing device when the brewing tank 2 is in different positions relative to the base 1.

[0042] The brewing device also includes a first piston 3. The first piston 3 is at least partially located within the brewing cylinder 2. The first piston 3 is movable relative to the brewing cylinder 2. Figure 3As shown, the first piston 3 has a first working surface 31. In this embodiment, the first working surface 31 is constructed as a plane.

[0043] In the beverage preparation process, the powder to be brewed is first received by the feeding device 6 from the grinding device and added into the brewing cylinder 2. Then, the powder is squeezed by the first action surface 31 of the first piston 3. Since the first action surface 31 is planar, a relatively uniform force can be applied when the first piston 3 squeezes the powder, thereby forming a powder cake of uniform thickness. Even when the amount of powder to be brewed is small, a high-quality powder cake of uniform thickness can be formed, which can avoid the formation of channeling effect in the powder cake during the extraction process and ensure high quality of beverage brewing.

[0044] In this embodiment, the brewing device further includes a slag scraping mechanism 4. The slag scraping mechanism 4 is connected to the brewing cylinder 2. The slag scraping mechanism 4 includes a transmission rod 41 and a slag scraper 42 that are connected by a transmission. The transmission rod 41 is pivotally connected to the brewing cylinder 2. The slag scraper 42 has a slag scraping plane that is adapted to the first working surface 31.

[0045] The slag scraper 42 has an initial position and a slag scraping position relative to the brewing tank 2. Please refer to... Figure 1-4 , Figure 1-4 The scraper component 42 is in its initial position; please refer to... Figure 7 , Figure 7 The slag scraper 42 is in the slag scraping position.

[0046] The brewing device also includes an actuator 11. The actuator 11 is disposed on the base 1. The brewing cylinder 2 drives the scraping mechanism 4 to move toward the actuator 11, causing the actuator 11 to press against the transmission rod 41, driving the transmission rod 41 to rotate relative to the brewing cylinder 2 along a first direction D, thereby causing the scraper 42 to move along the first working surface 31 from its initial position to the scraping position. The first direction D is from... Figure 5 The arrows in the image indicate the direction.

[0047] In this embodiment, the brewing device is equipped with a driving device. The driving device can drive the brewing cylinder 2 to move relative to the base 1. The movement of the brewing cylinder 2 drives the scraping mechanism 4 to move synchronously.

[0048] When using the brewing device to brew beverages, the scraper 42 is in its initial position and will not affect the brewing process.

[0049] After brewing a beverage using the brewing device, residue will remain inside. At this time, the drive unit can move the brewing cylinder 2 toward the actuation unit 11. The brewing cylinder 2 can then drive the residue scraping mechanism 4 to move synchronously.

[0050] Figures 1 to 4The diagram shows the actuating part 11 separated from the transmission rod 41. At this time, the brewing cylinder 2 moves toward the actuating part 11, driving the slag scraping mechanism 4 to move synchronously. The slag scraping mechanism 4 and the brewing cylinder 2 do not move relative to each other. The slag scraping component 42 is always in the initial position.

[0051] See Figure 5 This is a schematic diagram of the brewing tank 2 driving the scraping mechanism 4 to move to the point where the transmission rod 41 initially contacts the actuating part 11. At this time, the scraping part 42 is still in the initial position.

[0052] When the brewing cylinder 2 drives the scraping mechanism 4 to move until the transmission rod 41 contacts the actuating part 11, the brewing cylinder 2 drives the scraping mechanism 4 to continue moving towards the actuating part 11. The actuating part 11 then presses against the transmission rod 41, causing the transmission rod 41 to rotate relative to the brewing cylinder 2 in the first direction D. The rotation of the transmission rod 41 drives the scraper 42 to move from the initial position to the scraping position. During the movement, the scraper 42 scrapes off the residue on the first working surface 31.

[0053] Figure 6 The diagram shows the position of the scraper 42 when it moves to a position between the initial position and the scraping position. Figure 7 The diagram shown is a schematic of the slag scraper 42 moving to the slag scraping position.

[0054] In this embodiment, the base 1 is provided with two actuating parts 11. The two actuating parts 11 are located on opposite sides of the brewing tank 2. Correspondingly, the slag scraping mechanism 4 also includes two transmission rods 41, which are located on opposite sides of the brewing tank 2 and are respectively connected to opposite sides of the slag scraper 42. The two transmission rods 41 can move synchronously to drive the slag scraper 42 to move, thereby providing a more uniform driving force to the slag scraper 42 and improving the stability of the equipment operation. The two transmission rods 41 can be integrally formed or separately arranged. In this embodiment, the two transmission rods 41 are integrally formed.

[0055] The scraper 42 has a scraping plane adapted to the first working surface 31. When the scraper 42 moves from the initial position to the scraping position, the scraping plane can closely adhere to the first working surface 31. The scraping plane moves along the first working surface 31, thereby scraping off the slag on the first working surface 31. In a direction perpendicular to the moving direction of the scraper 42, the scraping plane can cover the entire first working surface 31. It can be understood that during the process of the scraper 42 moving from the initial position to the scraping position, the scraping plane can move closely and scrape across the entire first working surface 31. In this way, the scraping mechanism 4 can cleanly scrape off the slag, with a good scraping effect, and no slag will remain on the first working surface 31.

[0056] The brewing device of this embodiment, by constructing the first working surface 31 as a plane, can evenly compress the powder to be brewed during the beverage brewing process, forming a powder cake of uniform thickness. This avoids channeling effects during extraction, ensuring high-quality beverage extraction. Simultaneously, the scraper 42 is provided with a scraping plane adapted to the first working surface 31. During scraping, the scraping plane moves along the first working surface 31, smoothly scraping away the residue on the first working surface 31, resulting in excellent scraping effect. The movement of the scraping mechanism 4 relies on the movement of the brewing cylinder 2, eliminating the need for additional drive devices to drive the scraping mechanism 4, thus simplifying the overall structure and reducing the overall size.

[0057] Furthermore, in one embodiment of this application, the brewing device further includes a second piston 5 disposed on the base 1.

[0058] The first piston 3 is movable relative to the second piston 5. The second piston 5 has a second working surface 51. The second working surface 51 is opposite to the first piston 3; specifically, the second working surface 51 is arranged opposite to the first working surface 31.

[0059] In one embodiment, the second working surface 51 of the second piston 5 is also constructed as a plane. The second working surface 51 is parallel to the first working surface 31.

[0060] like Figure 1 As shown, the second piston 5 can extend into the brewing cylinder 2. The first working surface 31, the second working surface 51, and the brewing cylinder 2 together define the brewing cavity. The second piston 5 moves relative to the first piston 3 to reduce or expand the space of the brewing cavity. Specifically, the second piston 5 moves towards the first piston 3 to reduce the space of the brewing cavity; specifically, the second piston 5 moves away from the first piston 3 to expand the space of the brewing cavity.

[0061] The second piston 5 moves toward the first piston 3 to compress the powder to be brewed in the brewing chamber through the first working surface 31 and the second working surface 51. When the first piston 3 and the second piston 5 move toward each other to compress the powder to be brewed in the brewing chamber, the two opposing planes (the first working surface 31 and the second working surface 51) interact, resulting in a powder cake with a more uniform thickness, thereby ensuring the quality of the brewed beverage. In the provided specific embodiment, the second piston 5 is configured to remain stationary relative to the base 1 at all times.

[0062] like Figure 3As shown, the brewing device may further include a transmission mechanism that is driveably connected to the brewing cylinder 2. The transmission mechanism is a screw drive mechanism. The screw drive mechanism includes a screw 7 mounted on the base 1 and a screw seat 8 connected to the brewing cylinder 2. The axial direction of the screw 7 is consistent with the direction of movement of the brewing cylinder 2. The screw 7 and the screw seat 8 are threadedly engaged to achieve threaded transmission between them. A drive device drives the screw 7 to rotate, which in turn causes the screw seat 8 to move relative to the base 1 along the axial direction of the screw 7, thereby causing the brewing cylinder 2 to move relative to the base 1 along the axial direction of the screw 7.

[0063] The screw drive mechanism can be located on one side of the brewing tank 2. The second piston 5 is stationary relative to the base 1, and similarly, the second piston 5 is also located on one side of the screw 7. Specifically, the screw 7 is located on the side of the brewing tank 2 near the initial position of the scraper 42. The screw 7 will not interfere with the movement of the scraper 42.

[0064] In this embodiment of the brewing device, the first piston 3, the second piston 5, and the brewing cylinder 2 are arranged along a direction parallel to the axis of the screw 7 on one side of the screw 7. The overall layout is compact, the brewing device occupies little space, and it is easy to install in a beverage machine. Furthermore, by setting the first working surface 31 and the second working surface 51 as planes, a uniformly thick powder cake can be formed by the extrusion of the first piston 3 and the second piston 5, avoiding channel effects during the beverage extraction process. In other words, the brewing device of this application can simultaneously achieve the effects of small footprint, high-quality beverage brewing, and thorough residue removal.

[0065] In one embodiment, when the brewing device is used in a beverage machine, one of the first piston 3 and the second piston 5 is provided with an inlet flow path that communicates with the flow path system of the beverage machine, and the other is provided with an outlet flow path that communicates with the flow path system.

[0066] In the specific implementation provided, the first piston 3 is provided with an inlet flow path, and the second piston 5 is provided with an outlet flow path.

[0067] In this embodiment, water can be supplied to the brewing chamber through the liquid inlet path to brew a uniformly thick powder cake, forming a beverage. The brewed beverage in the brewing chamber can be transported downstream of the brewing device through the liquid outlet path.

[0068] During operation, the beverage machine first grinds coffee beans into coffee powder using a grinding device. Then, the powder is fed into the brewing tank 2 of the brewing unit via a feeding device 6. The brewing unit then performs the beverage brewing operation.

[0069] During the beverage brewing process, the brewing cylinder 2 first moves away from the actuating part 11, that is, moves closer to the second piston 5, causing the second piston 5 to extend into the brewing cylinder 2. Thus, the first working surface 31, the second working surface 51, and the brewing cylinder 2 together define a closed brewing chamber. The first piston 3 and the second piston 5 can continue to move towards each other, compressing the powder to be brewed into a cake through the first working surface 31 and the second working surface 51.

[0070] In the specific implementation provided, during the beverage brewing operation, the second piston 5 remains relatively fixed relative to the seat 1, and the driving device drives the screw 7 to rotate, causing the brewing cylinder 2 and the first piston 3 to move toward the direction of the second piston 5, so that the second piston 5 extends into the brewing cylinder 2.

[0071] After extrusion, liquid can be supplied to the brewing chamber through the liquid inlet path within the first piston 3 and the second piston 5 to brew the powder cake inside the brewing chamber, thereby obtaining a beverage. The brewed beverage can flow out of the brewing chamber through the liquid outlet path within the second piston 5 and can finally be dispensed into the user's cup through the beverage outlet.

[0072] During the beverage brewing process, the movement of the brewing tank 2 drives the scraping mechanism 4 to move synchronously, but there is no relative movement between the scraping mechanism 4 and the brewing tank 2. The scraping component 42 always remains in its initial position and will not affect the beverage brewing process.

[0073] After the brewing device completes the beverage brewing, it can perform a skimming operation. At this time, the driving brewing device moves toward the actuating part 11, which in turn drives the skimming mechanism 4 to move toward the actuating part 11 simultaneously. When the actuating part 11 just comes into contact with the transmission rod 41, or before the actuating part 11 comes into contact with the transmission rod 41, the first working surface 31 can move relative to the brewing cylinder 2 to be flush with or protrude from the end face of the brewing cylinder 2, thereby pushing the residue out of the brewing cylinder 2, making it easier for the subsequent skimming component 42 to scrape the residue cleanly.

[0074] like Figures 5 to 7 As shown, when the brewing cylinder 2 moves to the point where the actuator 11 contacts the transmission rod 41, it continues to move. The actuator 11 drives the scraping mechanism 4 to move, and the scraping component 42 moves along the first working surface 31 from the initial position to the scraping position, so that the material residue on the first working surface 31 can be scraped clean.

[0075] Furthermore, in one embodiment of this application, the brewing tank 2 has a first stroke and a second stroke that move toward the actuation part 11.

[0076] See Figures 1 to 4 As shown, this is the first stroke. During the first stroke, the actuator 11 disengages from the transmission rod 41, and the scraper 42 is in its initial position.

[0077] The brewing tank 2 continues to move toward the actuator 11, and can move from the first stroke to the second stroke.

[0078] See Figures 5 to 7 As shown, this represents the second motion stroke.

[0079] During the second stroke, the first working surface 31 is flush with or protrudes from the end face of the brewing cylinder 2, the actuating part 11 and the transmission rod 41 abut against each other and drive the scraper 42 from the initial position to the scraping position.

[0080] In this embodiment, during the first stroke, the brewing cylinder 2 can first drive the first piston 3 to move synchronously toward the actuating part 11. When the first piston 3 moves to a certain position, the first piston 3 stops relative to the seat 1, and the brewing cylinder 2 continues to move toward the actuating part 11 relative to the seat 1. At this time, the brewing cylinder 2 and the first piston 3 move relative to each other. Before the end of the first stroke, or when the first stroke ends, the first working surface 31 of the first piston 3 can be flush with or protrude from the end face of the brewing cylinder 2, thereby pushing out the residue in the brewing cylinder 2, and making the first working surface 31 and the scraping plane basically on the same plane.

[0081] During the second stroke, the scraper 42 moves from the initial position to the scraping position, and the scraping plane moves along the first working surface 31, which can scrape off the slag pushed out of the brewing tank 2 by the first piston 3, thus completing the scraping.

[0082] In this embodiment, the relative movement of the first piston 3 and the brewing cylinder 2, as well as the movement of the slag scraping mechanism 4, are all related to the movement of the brewing cylinder 2. Only after the first working surface 31 moves to be flush with or protrudes from the end face of the brewing cylinder 2 will the slag scraping component 42 perform slag scraping relative to the brewing cylinder 2, resulting in high overall stability.

[0083] Furthermore, in one embodiment of this application, the first working surface 31 is constructed as a horizontal surface. During the second stroke, the first piston 3 moves synchronously with the brewing cylinder 2, and the transmission rod 41 rotates relative to the brewing cylinder 2 along the first direction D, so that the scraping plane moves relative to the first working surface 31 to perform a horizontal scraping action.

[0084] In this embodiment, during the second stroke, the brewing cylinder 2 continues to move toward the actuating part 11, driving the first piston 3 to move synchronously. This allows the first working surface 31 to be held flush with or protruding from the end face of the brewing cylinder 2. During the second stroke, the scraping plane remains in contact with the first working surface 31, scraping away any residue and preventing residue from remaining on the first working surface 31.

[0085] The first working surface 31 is horizontal, and the scraper 42 performs scraping action relative to the brewing tank 2 in a horizontal direction. This horizontal scraping design has advantages in terms of ease of assembly. In terms of spatial layout, the horizontally moving scraper 42 does not require additional vertical stroke space, effectively compressing the height dimension of the equipment and making the arrangement of components around the brewing tank 2 more flexible. At the same time, horizontal scraping can ensure that the scraping plane remains stably attached to the first working surface 31 under the weight of the scraper 42 itself, avoiding residual dead corners due to angular deviation, thereby significantly improving the thoroughness of slag removal.

[0086] Furthermore, in one embodiment of this application, the seat 1 is provided with a cam base 12. The first piston 3 is provided with an elastic limiting component 32 that cooperates with the cam base 12. The brewing cylinder 2 drives the first piston 3 to move toward the actuating part 11 until the cam base 12 abuts against the elastic limiting component 32, thereby restricting the movement of the first piston 3 toward the actuating part 11. The first working surface 31 is located inside the brewing cylinder 2, and the scraper 42 is located in the initial position. When the brewing cylinder 2 moves toward the actuating part 11 until the actuating part 11 contacts the transmission rod 41, the first working surface 31 is flush with or protrudes from the end face of the brewing cylinder 2.

[0087] In this embodiment, the first motion stroke may include a first sub-stroke and a second sub-stroke.

[0088] See Figure 1 When the brewing cylinder 2 is in the first sub-stroke, the cam base 12 is disengaged from the elastic limiting component 32, and the first working surface 31 is located inside the brewing cylinder 2. The actuator 11 is disengaged from the transmission rod 41. The scraper 42 is in the initial position. The brewing cylinder 2 moves toward the actuator 11, driving the first piston 3 to move synchronously toward the actuator 11, and simultaneously driving the scraper mechanism 4 to move toward the actuator 11. The scraper mechanism 4 does not move relative to the brewing cylinder 2.

[0089] See Figure 2 and Figure 3 When the brewing cylinder 2 drives the first piston 3 to move until the cam base 12 abuts against the elastic limiting component 32, specifically, when the brewing cylinder 2 drives the first piston 3 to move until the upper stop surface of the cam base 12 abuts against the elastic limiting component 32, the first sub-stroke ends and the second sub-stroke begins.

[0090] During the second stroke, the cam base 12 abuts against the elastic limiting component 32, restricting the movement of the first piston 3 toward the actuating part 11. The actuating part 11 remains disengaged from the transmission rod 41. The scraper 42 is in its initial position. At this time, the brewing cylinder 2 continues to move toward the actuating part 11, and the brewing cylinder 2 and the first piston 3 generate relative movement, with the first working surface 31 moving relative to the end face of the brewing cylinder 2 toward the brewing cylinder 2. Simultaneously, the brewing cylinder 2 continues to drive the scraper mechanism 4 toward the actuating part 11, but the scraper mechanism 4 does not generate relative movement relative to the brewing cylinder 2.

[0091] The first stroke of the brewing tank 2 may also include a third sub-stroke. See also Figure 4 When the brewing cylinder 2 moves to a position where the first working surface 31 is flush with or protrudes from the end face of the brewing cylinder 2, the second sub-stroke ends and the third sub-stroke begins. At this time, the bottom of the brewing cylinder 2 abuts against the first piston 3.

[0092] Specifically, a protruding limiting member 33 is provided at the bottom of the first piston 3, and the bottom of the brewing cylinder 2 abuts against the limiting member 33. At this time, the brewing cylinder 2 continues to move toward the actuating part 11. Due to the abutting transmission between the brewing cylinder 2 and the first piston 3, the elastic limiting component 32 undergoes elastic deformation, and the elastic limiting component 32 disengages from the upper stop surface of the cam base 12. The first piston 3 moves synchronously toward the actuating part 11 under the drive of the brewing cylinder 2. The first working surface 31 is always kept flush with or protruding from the end face of the brewing cylinder 2. In the third sub-stroke, the actuating part 11 and the transmission rod 41 remain separated, the slag scraping mechanism 4 and the brewing cylinder 2 do not move relative to each other, and the slag scraping component 42 remains in the initial position.

[0093] See Figure 5 When the brewing cylinder 2 drives the scraping mechanism 4 to the position where the transmission rod 41 contacts the actuator 11, the third sub-stroke ends, that is, the first stroke ends, and the movement of the brewing cylinder 2 enters the second stroke.

[0094] See Figure 6 and Figure 7 During the second stroke, the bottom of the brewing cylinder 2 remains in contact with the limiting member 33. The brewing cylinder 2 continues to drive the first piston 3 to move synchronously toward the actuating part 11. The first working surface 31 is maintained at a position flush with or protruding from the end face of the brewing cylinder 2. At the same time, the actuating part 11 abuts against the transmission rod 41, driving the transmission rod 41 to rotate relative to the brewing cylinder 2 along the first direction D, thereby driving the scraper 42 to move from the initial position to the scraping position for horizontal scraping.

[0095] In this embodiment, the actuating part 11 will only drive the scraper 42 to move when the first working surface 31 is flush with or protrudes from the end face of the brewing tank 2. That is, throughout the entire process of the scraper 42 moving from the initial position to the scraping position, the first working surface 31 is always flush with or protruding from the end face of the brewing tank 2, and the scraper 42 will not move before the first working surface 31 is in a position flush with or protruding from the end face of the brewing tank 2.

[0096] In some embodiments, the actuator 11 only drives the scraper 42 to move when the first working surface 31 is flush with the end face of the brewing tank 2. That is, throughout the entire process of the scraper 42 moving from the initial position to the scraping position, the first working surface 31 is always flush with the end face of the brewing tank 2, and the scraper 42 will not move before the first working surface 31 is flush with the end face of the brewing tank 2.

[0097] In other embodiments, the actuator 11 only drives the scraper 42 to move when the first working surface 31 is in a protruding position relative to the end face of the brewing tank 2. That is, throughout the entire process of the scraper 42 moving from the initial position to the scraping position, the first working surface 31 is in a protruding position relative to the end face of the brewing tank 2, and the scraper 42 will not move before the first working surface 31 is in a protruding position relative to the end face of the brewing tank 2.

[0098] Furthermore, in one embodiment of this application, during the process of the slag scraper 42 moving from the initial position to the slag scraping position, the moving direction of the slag scraper 42 is parallel to the first working surface 31.

[0099] In this embodiment, both the first working surface 31 and the scraping plane are planar, and the scraper 42 moves along a direction parallel to the first working surface 31 during the scraping process. During the scraping process, the scraping plane always adheres to the first working surface 31, thereby achieving a better scraping effect and preventing material residue from remaining on the first plane.

[0100] Furthermore, in one embodiment of this application, the slag scraper 42 is slidably connected to the brewing tank 2. One of the brewing tank 2 and the slag scraper 42 is provided with a guide recess 22, and the other is provided with a guide protrusion 43 that cooperates with the guide recess 22.

[0101] In the specific embodiment provided, the brewing tank 2 is provided with a guide recess 22, and the slag scraper 42 is provided with a guide protrusion 43.

[0102] In this embodiment, the guide protrusion 43 is slidably disposed within the guide recess 22. The guide recess 22 is used to guide the movement direction of the scraper 42. During the scraping process, the transmission rod 41 rotates, causing the scraper 42 to translate. At this time, the guide protrusion 43 moves along the guide recess 22.

[0103] The extension direction of the guide recess 22 can be parallel to the first working surface 31, thereby enabling the scraper 42 to move more smoothly and achieve a better scraping effect.

[0104] Furthermore, in one embodiment of this application, the transmission rod 41 includes a braked portion 411 that contacts the actuating portion 11. When the brewing cylinder 2 drives the transmission rod 41 to move toward the actuating portion 11, the braked portion 411 can contact the actuating portion 11.

[0105] The transmission rod 41 also includes a connecting part 412 that is limited and connected to the scraper 42. The braked part 411 and the connecting part 412 are located on opposite sides of the rotation axis of the transmission rod 41. When the actuating part 11 abuts against the braked part 411 and drives the braked part 411 to rotate along the first direction D, the connecting part 412 also rotates along the first direction D.

[0106] In this embodiment, one of the connecting part 412 and the scraper 42 is provided with a transmission groove 44, and the other is provided with a transmission shaft 45. The transmission groove 44 and the transmission shaft 45 are slidably connected.

[0107] In the specific embodiment provided, the connecting part 412 is provided with a transmission groove 44, and the slag scraper 42 is provided with a transmission shaft 45.

[0108] Since the drive shaft 45 abuts against the groove wall of the drive groove 44, when the drive rod 41 rotates, the connecting part 412 rotates, driving the drive shaft 45 to move. Due to the sliding fit between the guide protrusion 43 and the guide recess 22, the drive shaft 45 slides in the drive groove 44, the guide protrusion 43 slides in the guide recess 22, and the scraper 42 moves relative to the first working surface 31.

[0109] In this way, the rotation of the transmission rod 41 can be directly converted into the movement of the scraper 42, and the overall structure is simple and compact.

[0110] Further, see Figure 8 In one embodiment of this application, the brewing tank 2 moves away from the actuating part 11, causing the seat 1 to press against the transmission rod 41, driving the transmission rod 41 to rotate in a direction opposite to the first direction D. The transmission rod 41 drives the scraper 42 to move from the scraping position to the initial position. Hereinafter, the second direction will refer to the direction opposite to the first direction D.

[0111] See Figures 1 to 4In this embodiment, the seat 1 includes a main body 13, a clearance portion 14 connected to the main body 13, and a guide ramp 15 connecting the main body 13 and the clearance portion 14. The clearance portion 14 is connected to the end of the main body 13 near the actuating portion 11. The clearance portion 14 is recessed relative to the main body 13 to provide space for the rotation of the transmission rod 41.

[0112] When the brewing tank 2 is in its first stroke, the transmission rod 41 contacts the main body 13 and moves along the main body 13. Thus, the main body 13 can also limit the transmission rod 41, preventing it from rotating.

[0113] See Figure 6 , Figure 7 When the brewing cylinder 2 is in the second stroke, the clearance part 14 provides clearance space, allowing the transmission rod 41 to rotate. When the transmission rod 41 rotates, the end of the transmission rod 41 extends into the clearance part 14, and the clearance part 14 will not interfere with the transmission rod 41.

[0114] See Figure 8 , Figure 9 This is a schematic diagram of the movement of the brewing tank 2 after the slag is scraped off.

[0115] When the slag scraping mechanism 4 finishes scraping, the slag scraper 42 is in the scraping position. See also Figure 8 The brewing tank 2 moves away from the actuator 11, causing the guide slope 15 to press against the transmission rod 41, driving the transmission rod 41 to rotate in the second direction. The transmission rod 41 drives the scraper 42 to move from the scraping position to the initial position.

[0116] Specifically, the brewing tank 2 moves away from the actuator 11, driving the scraping mechanism 4 to move, and the actuator 11 gradually disengages from the transmission rod 41.

[0117] When the brewing cylinder 2 drives the transmission rod 41 to contact the guide slope 15, the brewing cylinder 2 continues to move. The guide slope 15 abuts against the transmission rod 41, driving the transmission rod 41 to rotate in the second direction, which in turn drives the scraper 42 to move from the scraping position to the initial position. When the transmission rod 41 rotates to abut against the main body 13, the transmission rod 41 drives the scraper 42 to move to the initial position.

[0118] In this embodiment, see Figure 9During the movement of the brewing cylinder 2 away from the actuating part 11, the elastic limiting component 32 of the first piston 3 abuts against the cam base 12. Specifically, the elastic limiting component 32 abuts against the lower stop surface of the cam base 12, restricting the first piston 3 from moving away from the actuating part 11. At this time, the brewing cylinder 2 continues to move away from the actuating part 11, driving the scraping mechanism 4 to move synchronously, and the brewing cylinder 2 and the first piston 3 move relative to each other, with the first working surface 31 entering the brewing cylinder 2. During the movement of the scraping component 42 from the scraping position back to the initial position, there is no contact between the scraping plane and the first working surface 31.

[0119] like Figure 9 As shown, when the brewing cylinder 2 moves to the point where the limiting surface 27 inside the brewing cylinder 2 abuts against the first piston 3, the brewing cylinder 2 continues to move, causing the elastic limiting component 32 to undergo elastic deformation. The elastic limiting component 32 disengages from the lower stop surface of the cam base 12, thereby driving the first piston 3 to move synchronously with the brewing cylinder 2. The first piston 3 gradually disengages from the cam base 12. The brewing device can continue to perform the brewing operation for the next cup of beverage after receiving the powder to be brewed from the feeding device 6.

[0120] In this embodiment, no additional transmission components are required. The scraper 42 can be driven to move back and forth between the initial position and the scraping position simply by the movement of the base 1 and the brewing cylinder 2. The overall structure is simple and compact, greatly reducing the space occupied.

[0121] Furthermore, in one embodiment of this application, the movement direction of the brewing cylinder 2 is perpendicular to the first working surface 31. When the scraper 42 is in the initial position, the extension direction of the transmission groove 44 is perpendicular to the first working surface 31.

[0122] In this embodiment, the extending direction of the guide recess 22 may be parallel to the first working surface 31. The extending direction of the main body 13 of the seat 1 is consistent with the movement direction of the brewing cylinder 2.

[0123] When the first working surface 31 is horizontal, the brewing cylinder 2 moves vertically. The scraper 42 moves horizontally. The brewing cylinder 2 moves in a single direction, resulting in a smaller overall space requirement. The scraper mechanism 4 can be driven solely by the vertical movement of the brewing cylinder 2, requiring a relatively simple drive structure and making the brewing device compact overall.

[0124] See Figures 5 to 7 In this embodiment, the braked portion 411 of the transmission rod 41 includes a first rod portion 4111 and a second rod portion 4112. The extending directions of the first rod portion 4111 and the second rod portion 4112 are angled. Specifically, the extending directions of the first rod portion 4111 and the second rod portion 4112 may be 90° apart.

[0125] The first rod portion 4111 is used to contact the actuating portion 11. When the brewing tank 2 is in the second stroke, the transmission rod 41 rotates, the actuating portion 11 contacts the first rod portion 4111, and the end of the actuating portion 11 slides relative to the first rod portion 4111. When the scraper 42 moves to the scraping position, the end of the actuating portion 11 is located in the junction area of ​​the first rod portion 4111 and the second rod portion 4112. The first rod portion 4111 and the second rod portion 4112 are set at an angle, which can limit the further rotation of the transmission rod 41 and enhance the structural stability.

[0126] The brewing tank 2 is also equipped with a rotation limit part 26. For example... Figure 7 As shown, when the scraper 42 moves to the scraping position, the rotation limiting part 26 can abut against the first rod part 4111, preventing the transmission rod 41 from rotating further. The rotation limiting part 26 and the actuating part 11 can be located on both sides of the first rod part 4111. The two work together to further improve the stability of the device and prevent the transmission rod 41 from rotating too far.

[0127] See Figures 1 to 5 When the scraper 42 is in its initial position, the extension direction of the second rod 4112 is consistent with the movement direction of the brewing cylinder 2. When the brewing cylinder 2 is in its first stroke, the second rod 4112 is in contact with the main body 13 and slides along the main body 13, thereby preventing the transmission rod 41 from rotating. When the brewing cylinder 2 is in its second stroke, the transmission rod 41 rotates, and the free end of the second rod 4112 extends into the clearance part 14.

[0128] See Figure 8 When the scraper 42 moves to the scraping position, and the brewing cylinder 2 moves away from the actuator 11, the extension direction of the second rod 4112 is approximately parallel to the guide slope 15. When the brewing cylinder 2 drives the transmission rod 41 to move away from the actuator 11 to a certain position, the second rod 4112 can abut against the guide slope 15. As the brewing cylinder 2 continues to move away from the actuator 11, the transmission rod 41 rotates under the abutment action of the guide slope 15, causing the second rod 4112 to gradually rotate to a position that fits against the main body 13, thereby driving the scraper 42 to move to the initial position.

[0129] In the prior art, due to the limited space of the brewing device, in order to reduce the stroke of the scraper 42 to save space, the first working surface 31 of the first piston 3 and the second working surface 51 of the second piston 5 are often set as arc surfaces. However, the thickness of the powder cake formed by the arc surface is uneven. When preparing beverages, it is impossible to achieve uniform brewing of the entire powder cake, and thus the quality of the beverage cannot be guaranteed. This adverse consequence is more obvious when the amount of powder to be brewed is small.

[0130] To ensure the quality of beverage brewing, the first working surface 31 is constructed as a plane in this application. At the same time, in order to ensure the movement stroke of the scraper 42 in the case of limited space, this application provides a clearance area 23 or an arc-shaped second guide groove 222.

[0131] Further, see Figure 10 and Figure 11 In one embodiment of this application, the brewing tank 2 is provided with a guide recess 22. The slag scraper 42 is provided with a guide protrusion 43. The extending direction of the guide recess 22 is parallel to the first working surface 31. The brewing tank 2 also includes a relief area 23 provided at one end of the guide recess 22, and the extending direction of the relief area 23 is consistent with the extending direction of the guide recess 22.

[0132] Combination Figure 7 When the scraper 42 is in the scraping position, the guide protrusion 43 is located in the relief area 23, which allows the scraper 42 to rotate a preset angle relative to the brewing tank 2.

[0133] When the first working surface 31 of the first piston 3 is planar, in order to achieve a better slag scraping effect, the slag scraper 42 is configured to move in a direction parallel to the first working surface 31. However, due to the limited internal space of the brewing device, the movement stroke of the slag scraper 42 is restricted. The short stroke of the slag scraper 42 will result in the slag not being completely scraped off, remaining on the first working surface 31.

[0134] In this embodiment, a clearance area 23 is provided at one end of the guide recess 22. When the scraper 42 moves to the scraping position, the guide protrusion 43 enters the clearance area 23. At this time, under the action of gravity, the scraper 42 rotates relative to the brewing cylinder 2 by a preset angle, ensuring the scraping stroke of the scraper 42 in the limited space. In this way, the space occupied by the scraper 42 along the moving direction can be reduced, the scraper 42 will not interfere with other structures of the brewing device, and the slag on the first working surface 31 can be completely scraped off, resulting in a good scraping effect.

[0135] In this embodiment, the guide recess 22 is constructed as a guide groove, and the brewing tank 2 includes a first groove wall 24 and a second groove wall 25 forming the guide groove. The second groove wall 25 is closer to the actuating part 11 than the first groove wall 24. The first groove wall 24 and the second groove wall 25 extend in the same direction, and the gap between the first groove wall 24 and the second groove wall 25 forms the guide groove. The reduced protrusion height at one end of the second groove wall 25 forms a clearance area 23.

[0136] In a specific embodiment, the first groove wall 24 and the second groove wall 25 extend horizontally, with the second groove wall 25 positioned below the first groove wall 24. When the guide protrusion 43 is located in the clearance area 23, the scraper 42 can rotate under gravity due to the reduced protrusion height of the second groove wall 25. This reduces the space required for the scraper 42 in the horizontal direction, allowing it to move from its initial position to the scraping position within a limited space, resulting in a better scraping effect.

[0137] See Figure 12 and Figure 13 This application also provides another embodiment. In this embodiment, the brewing tank 2 is provided with a guide recess 22. The scraper 42 is provided with a guide protrusion 43. The guide recess 22 includes a first guide groove 221 and a second guide groove 222 connected together. The extension direction of the first guide groove 221 is parallel to the first working surface 31. The second guide groove 222 is constructed as an arc-shaped guide groove. The length of the first guide groove 221 is greater than the length of the second guide groove 222. When the scraper 42 moves to the scraping position, the guide protrusion 43 enters the second guide groove 222, and the second guide groove 222 allows the scraper 42 to rotate relative to the brewing tank 2 by a preset angle.

[0138] In this embodiment, when the scraper 42 moves to the scraping position, the guide protrusion 43 enters the second guide groove 222. Since the second guide groove 222 is an arc-shaped groove, when the guide protrusion 43 enters the second guide groove 222, it can guide the scraper 42 to rotate. This reduces the space required for the scraper 42 in the direction parallel to the first working surface 31, allowing the scraper 42 to move from its initial position to the scraping position within a limited space, thus ensuring the scraping effect.

[0139] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0140] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A brewing device, characterized in that, include: seat body; A brewing cylinder, which is connected to the base and is movable relative to the base; A first piston, at least partially placed inside the brewing tank and movable relative to the brewing tank, the first piston having a first working surface, the first working surface being planar; A slag scraping mechanism is connected to the brewing cylinder. The slag scraping mechanism includes a transmission rod and a slag scraping component that are connected by transmission. The transmission rod is pivotally connected to the brewing cylinder. The slag scraping component has a slag scraping plane that is adapted to the first working surface. The slag scraping component has an initial position and a slag scraping position relative to the brewing cylinder. An actuating part is disposed on the base body. The brewing cylinder drives the slag scraping mechanism to move toward the actuating part, so that the actuating part presses against the transmission rod and drives the transmission rod to rotate relative to the brewing cylinder along the first direction D, so as to drive the slag scraping member to move along the first working surface from the initial position to the slag scraping position.

2. The brewing device according to claim 1, characterized in that, The brewing tank has a first stroke and a second stroke that move toward the actuating part; during the first stroke, the actuating part disengages from the transmission rod, and the slag scraper is located in the initial position; During the second stroke, the first working surface is flush with or protrudes from the end face of the brewing cylinder, the actuating part abuts against the transmission rod, and the slag scraper moves from the initial position to the slag scraping position.

3. The brewing device according to claim 2, characterized in that, The first working surface is constructed as a horizontal plane. During the second stroke, the first piston moves synchronously with the brewing cylinder, and the transmission rod rotates relative to the brewing cylinder along the first direction D, so that the scraping plane moves relative to the first working surface to perform a horizontal scraping action.

4. The brewing device according to any one of claims 1-3, characterized in that, The seat is provided with a cam base, and the first piston is provided with an elastic limiting component that cooperates with the cam base; the brewing cylinder drives the first piston to move toward the actuating part until the cam base abuts against the elastic limiting component to limit the movement of the first piston toward the actuating part, the first working surface is located inside the brewing cylinder, and the scraper is located in the initial position; when the brewing cylinder moves toward the actuating part until the actuating part contacts the transmission rod, the first working surface is flush with or protrudes from the end face of the brewing cylinder.

5. The brewing device according to claim 1, characterized in that, As the slag scraper moves from the initial position to the slag scraping position, the direction of movement of the slag scraper is parallel to the first working surface.

6. The brewing device according to claim 5, characterized in that, The slag scraper is slidably connected to the brewing tank. One of the brewing tank and the slag scraper is provided with a guide recess, and the other is provided with a guide protrusion that cooperates with the guide recess.

7. The brewing device according to claim 6, characterized in that, The transmission rod includes a braked part that contacts the actuating part and a connecting part that is limited and connected to the scraper. The braked part and the connecting part are located on opposite sides of the rotation axis of the transmission rod. One of the connecting part and the scraper is provided with a transmission groove, and the other is provided with a transmission shaft, wherein the transmission shaft is slidably connected to the transmission groove.

8. The brewing device according to claim 7, characterized in that, The seat includes a main body, a clearance part connected to the main body, and a guide slope connecting the main body and the clearance part. The clearance part is connected to one end of the main body near the actuating part and is recessed relative to the main body to provide space for the rotation of the transmission rod. The brewing cylinder moves away from the actuating part, causing the guide slope to press against the transmission rod, driving the transmission rod to rotate in a direction opposite to the first direction D, thereby causing the scraper to move from the scraping position to the initial position.

9. The brewing device according to claim 7, characterized in that, The direction of movement of the brewing cylinder is perpendicular to the first working surface. When the slag scraper is in the initial position, the extension direction of the transmission groove is perpendicular to the first working surface.

10. The brewing device according to claim 6, characterized in that, The brewing tank is provided with the guide recess, the extension direction of the guide recess is parallel to the first working surface, and the brewing tank also includes a clearance area provided at one end of the guide recess, the extension direction of the clearance area is consistent with the extension direction of the guide recess. When the scraper is in the scraping position, the guide protrusion is located in the clearance area, which allows the scraper to rotate a preset angle relative to the brewing tank.

11. The brewing device according to claim 10, characterized in that, The guide recess is constructed as a guide groove, and the brewing tank includes a first groove wall and a second groove wall forming the guide groove. The second groove wall is closer to the actuating part relative to the first groove wall, and the protrusion height of one end of the second groove wall is reduced to form the clearance area.

12. The brewing device according to claim 6, characterized in that, The brewing cylinder is provided with the guide recess, which includes a first guide groove and a second guide groove connected together. The extension direction of the first guide groove is parallel to the first working surface. The second guide groove is constructed as an arc-shaped guide groove. The length of the first guide groove is greater than the length of the second guide groove. When the slag scraper moves to the slag scraping position, the guide protrusion enters the second guide groove. The second guide groove allows the slag scraper to rotate relative to the brewing cylinder at a preset angle.

13. The brewing device according to any one of claims 1-3, characterized in that, It also includes a second piston disposed on the seat, the second piston having a second working surface, the second working surface being constructed as a plane parallel to the first working surface; the first working surface, the second working surface, and the brewing cylinder together define the brewing cavity; The second piston moves relative to the first piston to reduce or expand the space of the brewing chamber; the second piston moves toward the first piston to squeeze the powder to be brewed in the brewing chamber through the first working surface and the second working surface.

14. A beverage machine, characterized in that, include: The brewing apparatus as described in any one of claims 1-13; A grinding device for grinding an object to be ground into a powder to be brewed, the powder to be brewed falling from the grinding device into the brewing device for brewing. A flow path system for supplying water to the brewing device to brew the powder to be brewed, in order to form a beverage; A beverage outlet is used to dispense the beverages output from the flow path system.

15. The beverage machine as described in claim 14, characterized in that, The brewing device further includes a second piston disposed on the base, the first piston being movable relative to the second piston, the second piston having a second working surface opposite to the first piston, the second working surface being constructed as a plane parallel to the first working surface; the second piston being able to extend into the brewing cylinder; one of the first piston and the second piston being provided with an inlet flow path communicating with the flow path system, and the other being provided with an outlet flow path communicating with the flow path system.

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