Coffee maker with floating tablet structure

Abstract

The application provides a coffee machine with a floating powder plate structure, which comprises a machine body, a powder pressing head and a handle hopper, the powder pressing head and the handle hopper are arranged on the machine body, the machine body is provided with a powder inlet channel, the placing cavity is provided with a floating powder plate, the floating powder plate is provided with a liquid outlet channel and a liquid outlet, the handle hopper is provided with a flow outlet, the placing cavity is provided with an elastic element, and the two ends of the elastic element are connected with the lower end surface of the floating powder plate and the bottom wall of the placing cavity. By arranging the floating powder plate and the elastic element, the floating powder plate is lifted by the elastic element to reserve a second powder distribution space every time powder is added, the coffee powder is more evenly distributed, after coffee extraction is completed, the elastic element automatically resets the floating powder plate along with the opening process of the sealed extraction space, the bottom air inlet channel is opened in the first time, the internal negative pressure is released, the originally sealed cavity is more easily opened, and the coffee powder residue is further automatically loosened, so that the user can easily remove the coffee residue in the hopper.

Description

Technical Field

[0001] This application relates to the field of coffee machine technology, specifically to a coffee machine with a floating powder plate structure. Background Technology

[0002] In espresso machines, to obtain high-quality coffee, users often need to perform several steps: loading, distributing, and tamping the coffee grounds into the funnel. The quality of these steps can lead to significant differences in the final coffee. In this step, the act of thoroughly tamping the evenly distributed coffee grounds increases the extraction pressure, resulting in a higher-quality coffee liquid.

[0003] In coffee machines with automatic coffee powder filling and tamping, it is difficult to ensure the uniformity and consistency of the powder filling because the filling and tamping are done automatically. This can lead to a very unsatisfactory coffee result (such as the channeling effect, where water flows through the loose parts in a concentrated manner, preventing the coffee powder from being fully extracted).

[0004] Extraction is carried out in a sealed, high-temperature, and high-pressure environment. At the end of each extraction, the machine needs to open the sealed extraction space. Due to the initial sealing of the space, it is often difficult to open due to a large negative pressure. Therefore, the machine requires considerable force to open.

[0005] Due to the initial compaction of the coffee grounds, the high-pressure osmosis during extraction, the expansion of the coffee grounds due to water absorption, and the negative pressure adsorption within the chamber, it becomes difficult to remove the extracted coffee grounds from the funnel after brewing. Users then need to use considerable force to tap the grounds in a special hopper, using inertia to forcibly dislodge them. This requires significant effort and produces considerable noise, causing inconvenience for users. Summary of the Invention

[0006] (a) Technical problems to be solved In view of this, this application provides a coffee machine with a floating powder plate structure. When dispensing coffee powder, the floating powder plate is lifted by an elastic element to reserve space for secondary powder distribution, so that the coffee powder is distributed more evenly. The elastic element automatically resets the floating powder plate, making it easier to open the original sealed cavity, so that the user can easily remove coffee residue in the funnel.

[0007] (II) Technical Solution To solve the aforementioned technical problem, this utility model provides a coffee machine with a floating powder plate structure, including a machine body, a tamping head, and a portafilter funnel. The portafilter funnel has a placement cavity for holding coffee powder. Both the tamping head and the portafilter funnel are located on the machine body, with the tamping head positioned directly above the portafilter funnel to press the coffee powder inside. The machine body has a powder inlet channel for injecting coffee powder into the portafilter funnel. A floating powder plate is disposed within the placement cavity, and a liquid outlet is provided on the floating powder plate for discharging the liquid mixed with the coffee powder. The portafilter funnel has an outlet that communicates with the placement cavity. An elastic element is disposed within the placement cavity, with both ends of the elastic element connected to the lower end face of the floating powder plate and the bottom wall of the placement cavity, respectively.

[0008] In this solution, by setting up a floating powder plate and an elastic element, the floating powder plate is raised by the elastic element each time powder is dispensed, leaving space for secondary powder distribution. During tamping, secondary self-balancing distribution compensation can be achieved, making the coffee powder distribution more even. After coffee extraction is completed, as the sealed extraction space is opened, the elastic element automatically resets the floating powder plate, which can open the bottom air intake channel immediately, release the internal negative pressure, and make it easier to open the original sealed cavity. This further automatically loosens and removes the coffee grounds, allowing users to easily remove coffee residue from the funnel.

[0009] Preferably, a fixing plate is detachably connected to the upper end face of the floating powder plate, the fixing plate has a plurality of water passage holes, the floating powder plate has a liquid outlet channel, the liquid outlet channel is connected to the liquid outlet, and the water passage holes connect the placement cavity and the liquid outlet channel.

[0010] In this solution, by setting up a fixing plate and opening a water passage hole at its top, water can be prevented from directly washing away the coffee powder.

[0011] As a further preferred embodiment, an installation groove is provided on the outer peripheral wall of the floating powder plate, and a sealing ring is provided in the installation groove to seal the connection between the floating powder plate and the side wall of the placement cavity.

[0012] In this design, a sealing ring is incorporated. During the downward pressing of the floating powder plate, the side walls of the funnel, which align with the handle, are conical (wider at the top and narrower at the bottom). When the plate bounces up, it moves upward, creating gaps between the floating powder plate and the funnel. During the downward pressing, the ring is pressed tightly against the surrounding area to create a seal.

[0013] As a further preferred embodiment, the bottom wall of the placement cavity is provided with at least one insertion hole, the lower end of the floating powder plate is provided with a guide post, the guide post is inserted into the insertion hole, and the elastic element is sleeved on the guide post.

[0014] In this solution, the angle and direction of the floating powder plate during resetting can be made more accurate and uniform by setting guide columns.

[0015] As a further preferred embodiment, the bottom wall of the placement cavity is provided with a placement groove and a connecting groove, the connecting groove connecting the placement groove and the outlet, the lower end of the floating powder plate is provided with a liquid outlet column, the liquid outlet column is provided with the liquid outlet, the liquid outlet column is inserted into the placement groove, the coffee liquid enters the placement groove from the liquid outlet, passes through the connecting groove and flows out from the outlet.

[0016] In this design, the connection slot and placement slot facilitate the flow of coffee liquid and prevent it from accumulating in the placement chamber.

[0017] As a further preferred embodiment, the lower end of the floating powder plate is provided with a connecting post, which is used to connect the floating powder plate and the fixed plate.

[0018] As a further preferred embodiment, the bottom wall of the connecting groove is provided with a column, and the outer peripheral wall of the column is provided with a connecting hole, the connecting hole connecting the connecting groove and the outlet.

[0019] Preferably, the outer side of the handle funnel is fitted with a decorative shell, and the decorative shell has a through hole that communicates with the outlet.

[0020] (III) Beneficial Effects Compared with the prior art, the beneficial effects that this specification can achieve include at least the following: By setting up a floating powder plate and elastic elements, the floating powder plate is raised by the elastic elements each time powder is dispensed to reserve a secondary powder distribution space. During tamping, secondary self-balancing distribution compensation can be achieved, making the coffee powder distribution more even. After coffee extraction is completed, as the sealed extraction space is opened, the elastic elements automatically reset the floating powder plate, which can open the bottom air intake channel immediately, release the internal negative pressure, and make it easier to open the original sealed cavity. This further automatically loosens and removes the coffee grounds, allowing users to easily remove coffee residue from the funnel. By setting up a fixed plate and opening a water passage hole at its top, water can be prevented from directly washing away the coffee powder. By setting a sealing ring, the side wall of the handle funnel around the floating powder plate is conical, that is, larger at the top and smaller at the bottom, during the downward pressing of the floating powder plate. When it bounces up, the floating powder plate moves up and gaps are created between the sides and the funnel; when it is pressed down, it is pressed tightly and sealed with the sides. By setting guide columns, the angle and direction of the floating powder plate can be made more accurate and uniform when it is reset. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a coffee machine with a floating powder plate according to the present invention; Figure 2 This is a schematic diagram of the hidden housing of a coffee machine with a floating powder plate structure according to this utility model; Figure 3 This is a schematic diagram of the handle funnel of a coffee machine with a floating powder plate structure according to this utility model; Figure 4 This is an exploded view of the handle funnel and floating powder plate of a coffee machine with a floating powder plate structure according to this utility model. Figure 5 This is a first cross-sectional view of the handle funnel and floating powder plate of a coffee machine with a floating powder plate structure according to this utility model. Figure 6 This is a second cross-sectional view of the handle funnel and floating powder plate of a coffee machine with a floating powder plate structure according to this utility model. Figure 7 This is a schematic diagram of the handle funnel of a coffee machine with a floating powder plate structure according to this utility model; Figure 8 This is a first structural schematic diagram of the floating powder plate of a coffee machine with a floating powder plate structure according to the present invention; Figure 9 This is a second structural schematic diagram of the floating powder plate of a coffee machine with a floating powder plate structure according to the present invention.

[0023] The component names corresponding to the various labels in the figure are as follows: 1. Machine body; 2. Powder pressing head; 3. Handle funnel; 31. Placement chamber; 32. Outlet; 33. Insertion hole; 34. Placement groove; 35. Connecting groove; 36. Column; 37. Connecting hole; 4. Floating powder plate; 41. Liquid outlet channel; 42. Liquid outlet; 43. Elastic element; 44. Fixing plate; 441. Water passage hole; 45. Mounting groove; 46. Sealing ring; 47. Guide column; 48. Liquid outlet column; 49. Connecting column; 5. Decorative shell. Detailed Implementation

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0028] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0029] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0030] This application provides a coffee machine with a floating powder plate structure, including a machine body 1, a tamping head 2, and a portafilter 3. The portafilter 3 has a placement cavity 31 for holding coffee powder. The tamping head 2 and the portafilter 3 are both located on the machine body 1, with the tamping head 2 positioned directly above the portafilter 3 to press the coffee powder inside. The machine body 1 has a powder inlet channel for injecting coffee powder into the portafilter 3. A floating powder plate 4 is provided in the placement cavity 31, and a liquid outlet 42 is provided on the floating powder plate 4 for discharging the liquid mixed with the coffee powder. An outlet 32 ​​is provided on the portafilter 3, which communicates with the placement cavity 31. An elastic element 43 is provided in the placement cavity 31, with both ends of the elastic element 43 connected to the lower end face of the floating powder plate 4 and the bottom wall of the placement cavity 31, respectively.

[0031] Furthermore, as a preferred embodiment, a fixing plate 44 is detachably connected to the upper end face of the floating powder plate 4. The fixing plate 44 has several water passage holes 441, and the floating powder plate 4 has a liquid outlet channel 41 connected to the liquid outlet 42. The water passage holes 441 connect the placement cavity 31 and the liquid outlet channel 41. An installation groove 45 is provided on the outer peripheral wall of the floating powder plate 4, and a sealing ring 46 is provided within the installation groove 45 to seal the connection between the floating powder plate 4 and the side wall of the placement cavity 31.

[0032] Furthermore, as a preferred embodiment, the bottom wall of the placement cavity 31 is provided with at least one insertion hole 33, the lower end of the floating powder plate 4 is provided with a guide post 47, the guide post 47 is inserted into the insertion hole 33, and the elastic member 43 is sleeved on the guide post 47.

[0033] Furthermore, as a preferred embodiment, the bottom wall of the placement cavity 31 is provided with a placement groove 34 and a connecting groove 35. The connecting groove 35 connects the placement groove 34 and the outlet 32. The lower end of the floating powder plate 4 is provided with a liquid outlet column 48. The liquid outlet column 48 is provided with an outlet 42. The liquid outlet column 48 is inserted into the placement groove 34. The coffee liquid enters the placement groove 34 from the outlet 42, passes through the connecting groove 35, and flows out from the outlet 32.

[0034] Furthermore, as a preferred embodiment, a connecting post 49 is provided at the lower end of the floating powder plate 4, the connecting post 49 being used to connect the floating powder plate 4 and the fixed plate 44. A column 36 is provided on the bottom wall of the connecting groove 35, and a connecting hole 37 is provided on the outer peripheral wall of the column 36, the connecting hole 37 connecting the connecting groove 35 and the outlet 32.

[0035] Furthermore, as a preferred embodiment, a decorative shell 5 is fitted on the outer side of the handle funnel 3, and the decorative shell 5 has a through hole that communicates with the outlet 32.

[0036] Specifically, in this embodiment, the machine body 1 is provided with a tamping head 2 and a handle funnel 3. The handle funnel 3 is located below the tamping head 2 and has a placement cavity 31. A floating powder plate 4 is provided in the placement cavity 31, and coffee powder can be placed on the floating powder plate 4. The tamping head 2 is movably connected to the machine body 1. The machine body 1 is provided with a powder inlet channel. The coffee powder enters the placement cavity 31 from the powder inlet channel. The tamping head 2 is activated to tamp the coffee powder in the placement cavity 31.

[0037] Specifically, in this embodiment, a decorative shell 5 is fitted on the outer side of the handle funnel 3, and a waterproof sleeve is provided at the connection position between the decorative shell 5 and the handle funnel 3; a through hole is provided on the decorative shell 5 to communicate with the placement cavity 31, and a handle is connected to one side of the handle funnel 3; a placement groove 34, a connecting groove 35 and two insertion holes 33 are provided on the bottom wall of the placement cavity 31, a column 36 is provided on the bottom wall of the connecting groove 35, the column 36 is hollow, a connecting hole 37 is provided on one side of the outer peripheral wall of the column 36, and an outlet 32 ​​is provided at the lower end of the handle funnel 3. Liquid flows out from the floating powder plate 4 into the placement groove 34, flows into the connecting groove 35, then through the connecting hole 37 and finally out through the outlet 32.

[0038] Specifically, in this embodiment, the floating powder plate 4 is cylindrical. A fixing plate 44 is located at the upper end of the floating powder plate 4, with a first threaded hole at its center. A connecting post 49 is located at the lower end of the floating powder plate 4, inserted into a connecting groove 35. A second threaded hole is located on the connecting post 49. A bolt passes through the first threaded hole and is threaded into the second threaded hole to connect the fixing plate 44 and the floating powder plate 4. The fixing plate 44 has several water passage holes 441. A liquid outlet channel 41 is located on the upper surface of the floating powder plate 4. A liquid outlet column 48 is located at the lower end of the floating powder plate 4, inserted into a placement groove 34. An outlet 42 is located at the upper end of the liquid outlet column 48, with a water outlet channel connected to the outlet 42. Liquid enters the liquid outlet channel 41 through the water passage holes 441 and then enters the water outlet channel through the outlet 42. The powder flows out into the handle funnel 3 and finally out; the lower end of the floating powder plate 4 is provided with two guide posts 47, which are inserted into the insertion hole 33. The connecting post 49 is provided with a limit block, and the connecting post 49 can be inserted into the column 36. The limit block cooperates with the upper end face of the column 36 to limit the downward pressing distance of the floating powder plate 4; an elastic element 43 is sleeved on the outside of the guide post 47. The elastic element 43 is a spring. The two ends of the elastic element 43 are respectively connected to the bottom wall of the placement cavity 31 and the lower end face of the floating powder plate 4. When the powder pressing head 2 is pressed down, the elastic element 43 always has an upward (towards the end closer to the powder pressing head 2) upward movement tendency; because of the elastic element 43, there is a gap between the floating powder plate 4 and the bottom wall of the placement cavity 31 when the powder pressing head 2 is not pressed down. When the floating powder plate 4 contacts the bottom wall of the placement cavity 31, it means that the movement is in place and the floating powder plate 4 is limited.

[0039] Specifically, in this embodiment, coffee beans, after being ground into coffee powder, enter the placement cavity 31 of the portafilter 3 along the powder inlet channel and fall into the portafilter 3 under the influence of gravity. At this time, the floating powder plate 4 is in a bounced state under the action of the two elastic members 43 at the bottom. As the tamping head 2 presses down, the originally accumulated coffee powder will spread outwards. Although the surface in contact with the tamping head 2 appears to be flat, its internal density is not uniform (due to the friction of the powder itself, most of it has a higher density in the middle and a lower density at the periphery). In this state, the floating powder plate 4 is in a bounced state under the action of the two elastic members 43 at the bottom. As the tamping head 2 continues to press down, the pressure on the originally basically formed coffee powder continues to increase. At the same time, under the action of the tapered shape of the placement cavity 31, the coffee powder will be tightened again towards the axis along the circumference. Moreover, the elastic members 43 of the bottom floating powder plate 4 are compressed by force, freeing up some space. Under the action of multiple forces, the internal coffee powder is forced to interweave and fill each other again under the influence of force and filling density, and finally achieves uniform distribution. In this state, the floating coffee plate 4, under the action of the two elastic elements 43 at the bottom and the downward pressure from the top, slowly moves downward until it reaches the very bottom. As the tamping action is completed, the sealing action is also completed simultaneously. The coffee extraction then begins. During this process, the density of the coffee grounds infused with hot water is rebalanced to prevent channeling and ensure a better coffee effect. A sealing ring 46 is set, its perimeter matching the side wall of the funnel 3 in a conical shape (larger at the top and smaller at the bottom). When it springs up, the floating coffee plate 4 moves upward, creating a gap between its perimeter and the funnel. When it is pressed down, it is pressed tightly together to seal. During extraction, as the coffee flows out and the tamping head 2 retracts, the floating coffee plate 4, under the action of its elastic element 43, rises simultaneously. In this process, it first moves upward synchronously with the tamping head 2 and the coffee cake. During this upward movement, the sealing ring 46 of the floating coffee plate 4 slowly separates from the side wall, creating a gap for air to pass through. Simultaneously, as air enters and the coffee cake retracts, gaps also form between its perimeter and the side wall, facilitating separation. In this state, the floating powder plate 4, under the action of the two elastic members 43 at the bottom, slowly moves upward and springs open until the elastic members 43 are fully extended.

[0040] Specifically, in this embodiment, by setting a floating powder plate 4 and an elastic element 43, the floating powder plate 4 is raised by the elastic element 43 each time powder is collected to reserve a secondary powder distribution space. During tamping, secondary self-balancing distribution compensation can be achieved, making the coffee powder distribution more uniform. After coffee extraction is completed, as the sealed extraction space is opened, the elastic element 43 automatically resets the floating powder plate 4, which can open the bottom air intake channel immediately, release the internal negative pressure, and make it easier to open the original sealed cavity. Furthermore, it automatically pre-loosens the coffee grounds, allowing the user to easily remove the coffee residue in the funnel.

[0041] Specifically, in this embodiment, by setting a fixing plate 44 and opening a water passage hole 441 at its upper end, water can be prevented from directly washing away the coffee powder. By setting a sealing ring 46, during the downward pressing of the floating powder plate 4, its surroundings are conical, i.e., wider at the top and narrower at the bottom. When it bounces up, the floating powder plate 4 moves upward, creating a gap between its surroundings and the funnel. When it is pressed down, it is pressed tightly and sealed with its surroundings.

[0042] Specifically, in this embodiment, the guide post 47 ensures a more accurate and uniform angle when the floating powder plate 4 resets. The connecting groove 35 and the placement groove 34 facilitate the flow of coffee liquid and prevent accumulation in the placement cavity 31. The limiting block better limits the downward distance of the floating powder plate 4.

[0043] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0044] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A coffee machine with a floating powder plate structure, comprising a machine body (1), a tamping head (2), and a portafilter funnel (3), wherein the portafilter funnel (3) has a placement cavity (31) for holding coffee powder, the tamping head (2) and the portafilter funnel (3) are both disposed on the machine body (1), and the tamping head (2) is located directly above the portafilter funnel (3) for pressing the coffee powder in the portafilter funnel (3), and the machine body (1) is provided with a powder inlet channel for injecting coffee powder into the portafilter funnel (3), characterized in that, A floating powder plate (4) is provided in the placement cavity (31). A liquid outlet (42) is provided on the floating powder plate (4). The liquid outlet (42) is used to discharge the liquid after mixing with coffee powder. An outlet (32) is provided on the handle funnel (3). The outlet (32) is connected to the placement cavity (31). An elastic element (43) is provided in the placement cavity (31). The two ends of the elastic element (43) are respectively connected to the lower end face of the floating powder plate (4) and the bottom wall of the placement cavity (31).

2. The coffee machine with a floating powder plate structure according to claim 1, characterized in that, The upper end face of the floating powder plate (4) is detachably connected to a fixed plate (44). The fixed plate (44) has a plurality of water passage holes (441). The floating powder plate (4) has a liquid outlet channel (41). The liquid outlet channel (41) is connected to the liquid outlet (42). The water passage holes (441) connect the placement cavity (31) and the liquid outlet channel (41).

3. The coffee machine with a floating powder plate structure according to claim 2, characterized in that, An installation groove (45) is provided on the outer peripheral wall of the floating powder plate (4), and a sealing ring (46) is provided in the installation groove (45) to seal the connection between the floating powder plate (4) and the side wall of the placement cavity (31).

4. The coffee machine with a floating powder plate structure according to claim 2, characterized in that, The bottom wall of the placement cavity (31) is provided with at least one insertion hole (33), and the lower end of the floating powder plate (4) is provided with a guide post (47). The guide post (47) is inserted into the insertion hole (33), and the elastic element (43) is sleeved on the guide post (47).

5. The coffee machine with a floating powder plate structure according to claim 4, characterized in that, The bottom wall of the placement cavity (31) is provided with a placement groove (34) and a connecting groove (35). The connecting groove (35) connects the placement groove (34) and the outlet (32). The lower end of the floating powder plate (4) is provided with a liquid outlet column (48). The liquid outlet column (48) is provided with the liquid outlet (42). The liquid outlet column (48) is inserted into the placement groove (34). The coffee liquid enters the placement groove (34) from the liquid outlet (42), passes through the connecting groove (35), and flows out from the outlet (32).

6. The coffee machine with a floating powder plate structure according to claim 5, characterized in that, The lower end of the floating powder plate (4) is provided with a connecting column (49), which is used to connect the floating powder plate (4) and the fixed plate (44).

7. The coffee machine with a floating powder plate structure according to claim 6, characterized in that, The bottom wall of the connecting groove (35) is provided with a column (36), and the outer peripheral wall of the column (36) is provided with a connecting hole (37), which connects the connecting groove (35) and the outlet (32).

8. The coffee machine with a floating powder plate structure according to claim 1, characterized in that, The outer side of the handle funnel (3) is fitted with a decorative shell (5), and the decorative shell (5) has a through hole that communicates with the outlet (32).

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