A coffee machine high efficiency extraction brew head

Abstract

The utility model relates to coffee machine accessory technical field, concretely relates to a coffee machine high -efficient extraction brewing head, including the brewing head body that communicates with coffee machine water outlet, still including the filter screen subassembly of connecting in the brewing head body below and the shell that establishes in filter screen outside, the brewing head body is along the axis and is opened with main water flow channel, the bottom of main water flow channel is equipped with center water flow channel and side water flow channel, the bottom of main water flow channel and the top of center water flow channel and side water flow channel are linked together, compared with prior art, the utility model discloses through center water flow channel and side water flow channel cooperation, can cover the different area of coffee powder in filter screen subassembly, avoid the problem that single water flow is not full to coffee powder cover, the guide vane of filter screen subassembly inside can guide the coffee liquid after extraction even seep out along filter screen inner wall, reduces the jamming situation that coffee liquid concentrates in filter screen partial.

Description

Technical Field

[0001] This utility model relates to the technical field of coffee machine accessories, specifically to a high-efficiency extraction and brewing head for coffee machines. Background Technology

[0002] In the development of coffee machines, the brewing head, as a key component for coffee extraction, directly affects the quality and extraction efficiency of the coffee. Currently, various brewing head designs exist on the market. Existing technology discloses a coffee extraction water-rinsing device and extraction device, publication number CN211985034U. This prior art achieves coffee grounds extraction by setting a perforated plate with multiple drainage holes at the bottom of the water container. The coffee grounds are placed directly in the filter structure below the perforated plate. To a certain extent, this structure can evenly rinse the coffee grounds, and the pore size or density of the perforations on the perforated plate can be adjusted according to the amount of coffee grounds at different locations.

[0003] However, this existing technical solution has some fundamental limitations: First, its water flow distribution relies entirely on the static physical holes on the water-draining plate. The water flow only penetrates the coffee powder vertically downwards, resulting in a single distribution dimension. It lacks the ability to actively guide the water flow and uniformly cover the three-dimensional space, making it difficult to fundamentally solve the problem of extraction uniformity. For professional applications that pursue high-quality extraction, this method, which relies on a simple distribution of water-draining holes, still has room for improvement in terms of water flow impact force, distribution uniformity, and extraction efficiency. Second, the multi-component system introduced to achieve bloom control, such as the baffle plate, seals, pressure rods, elastic components, and spring timer, significantly increases the complexity of the structure and the number of parts. This not only increases manufacturing costs but also increases the equipment failure rate and maintenance difficulty.

[0004] In view of the above-mentioned defects in the existing technology, the present invention aims to provide a new brewing head structure that fundamentally improves the water flow distribution method. Through innovative internal flow channel design and component structure, it achieves a more efficient and uniform coffee extraction effect while maintaining the simplicity and reliability of the structure. Utility Model Content

[0005] To address the aforementioned technical problems or one of the technical problems existing in the prior art, this utility model discloses a high-efficiency extraction brewing head for a coffee machine, including a brewing head body connected to the water outlet of the coffee machine, a filter assembly connected below the brewing head body, and a protective shell disposed outside the filter. A frustum is fixedly connected to the bottom of the brewing head body and is connected to the filter assembly and the protective shell through the frustum. The brewing head body has a main water flow channel along its axis, and the bottom of the main water flow channel has a central water flow channel and a side water flow channel. The bottom of the main water flow channel is connected to the top of the central water flow channel and the side water flow channel.

[0006] Furthermore, the brewing head body is cylindrical in shape, the central water flow channel is coaxially connected to the main water flow channel, one end of the side water flow channel is arc-shaped and connected to the main water flow channel, and the other end is located outside the central water flow channel and symmetrically distributed.

[0007] Furthermore, the side of the frustum is provided with external threads.

[0008] Furthermore, the protective shell is generally in the shape of an inverted cone, with an annular top and an internal thread on the inner side. The protective shell is connected to the frustum thread through the internal and external threads, and a flow guide is provided at the bottom of the protective shell.

[0009] Furthermore, the bottom surface of the frustum is provided with an annular groove and an L-shaped slot. The annular groove is located on the outer side of the side water flow channel, and the L-shaped slot is evenly distributed around the outer edge of the annular groove.

[0010] Furthermore, the filter assembly is shaped like an inverted cone with a circular opening at the top and a ring support frame fixedly attached. A rectangular protrusion is fixedly attached to the outside of the ring support frame, and the ring support frame is located in an annular groove and connected to an L-shaped slot through the rectangular protrusion.

[0011] Furthermore, the rectangular protrusion is positioned to match the L-shaped slot.

[0012] Furthermore, a guide plate is fixedly connected to the inner side of the filter assembly, and there are multiple guide plates arranged in a circumferential array.

[0013] Compared with existing technologies, this invention, through the cooperation of the central water flow channel and the side water flow channel, can cover different areas of coffee powder within the filter assembly, avoiding the problem of incomplete coverage of coffee powder by a single water flow. The guide plate on the inner side of the filter assembly can guide the extracted coffee liquid to seep evenly along the inner wall of the filter, reducing the blockage caused by the coffee liquid concentrating in a local area of ​​the filter. The overall shell is inverted cone shape, which helps to reduce the residue of coffee liquid on the inner wall of the shell and guides the coffee liquid to flow smoothly to the bottom guide port. The connection structure between the components is reasonable and does not affect the water flow to rinse and extract coffee powder, while improving the overall stability and ease of maintenance of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the bottom structure of the brewing head body of this utility model; Figure 5 This is a schematic diagram of the top surface structure of the brewing head body of this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 The technical solution adopted by this utility model is as follows: a high-efficiency extraction brewing head for a coffee machine, including a brewing head body 1 connected to the water outlet of the coffee machine, a filter assembly 2 connected below the brewing head body 1, and a protective shell 3 disposed on the outside of the filter. The brewing head body 1, as the core load-bearing component, achieves a stable connection with the filter assembly 2 and the protective shell 3 through a bottom frustum 14, ensuring a compact structure after assembly. The bottom of the brewing head body 1 is fixedly connected to the frustum 14, and is connected to the filter assembly 2 and the protective shell 3 through the frustum 14. The brewing head body 1 has a main water flow channel 11 along its axis. The bottom of the main water flow channel 11 has a central water flow channel 12 and a side water flow channel 13. The bottom of the main water flow channel 11 is connected to the top of the central water flow channel 12 and the side water flow channel 13. The main water flow channel 11 serves as the main water inlet, and its bottom is connected to the central water flow channel 12. Along with the side water flow channel 13, the water flow can be diverted to different areas, avoiding the problem of incomplete coffee powder coverage caused by a single water flow path, and providing a basis for subsequent uniform extraction.

[0017] Preferably, the brewing head body 1 is cylindrical in shape. The cylindrical brewing head body 1 is compatible with the connection size of most coffee machine water outlets, reducing assembly difficulty. The central water flow channel 12 is coaxially connected with the main water flow channel 11, which allows the water flow to act vertically downward on the central area of ​​the coffee powder in the filter assembly, ensuring extraction in the core area. One end of the side water flow channel 13 is arc-shaped and connected to the main water flow channel 11, which can reduce the resistance of the water flow in the channel. The other end is located outside the central water flow channel 12 and is symmetrically distributed, further improving the uniformity of water flow coverage of coffee powder.

[0018] Preferably, the side of the frustum 14 is provided with an external thread 15.

[0019] Preferably, the protective shell 3 is in the shape of an inverted cone, which allows the coffee liquid seeping from the filter assembly to naturally converge downwards along the inner wall of the protective shell, reducing the adhesion and residue of coffee liquid on the inner wall of the protective shell. The top is annular, and the inner side is provided with an internal thread 32. The protective shell 3 is threaded to the frustum 14 through the internal thread 32 and the external thread 15, ensuring that the protective shell can accurately align with the frustum and be stably assembled, avoiding the protective shell from shifting. The bottom of the protective shell 3 is provided with a guide port 31 to guide the converged coffee liquid to flow out in a concentrated manner, preventing the coffee liquid from dripping to the outside of the protective shell.

[0020] Preferably, the bottom surface of the truncated cone is provided with an annular groove 16 and an L-shaped slot 17. The annular groove 16 is located on the outside of the side water flow channel 13. The annular groove 16 can accommodate the annular support frame 22 of the filter assembly and plays a radial positioning role for the filter assembly. The L-shaped slot 17 is evenly distributed around the outer edge of the annular groove 16.

[0021] Preferably, the filter assembly 2 is a filter-shaped material that effectively separates coffee liquid from coffee grounds, preventing coffee grounds from mixing into the finished coffee. It is an inverted cone shape, which adapts to the loading requirements of coffee powder, allowing it to fill naturally. The top has a circular opening and is fixedly connected to an annular support frame 22, enhancing the structural strength of the top of the filter and preventing deformation due to stress. A rectangular protrusion 23 is fixed to the outside of the annular support frame 22, which is located within an annular groove 16 and connected to an L-shaped slot 17 via the rectangular protrusion 23. The L-shaped slot 17, with its evenly distributed circumference, works in conjunction with the rectangular protrusion 23 of the filter assembly. The filter assembly can be fixed by "vertical insertion and horizontal rotation," simplifying the filter assembly and disassembly process, facilitating the cleaning of residual coffee grounds, and ensuring that the filter assembly does not shift during extraction, ensuring that the water flow always accurately targets the coffee powder. This provides precise positioning for the connection between the filter assembly and the frustum.

[0022] Preferably, the rectangular protrusion 23 is matched with the L-shaped slot 17. The size matching of the two can ensure the tightness after the snap-fit, and prevent the filter assembly from becoming loose or shaking during use. At the same time, it simplifies the alignment operation when the filter is installed and removed. The filter can be fixed or removed without complicated adjustments, which improves the convenience of daily maintenance. The stable snap-fit ​​relationship can ensure that the relative position between the filter and the frustum remains unchanged, and does not affect the coverage effect of the water flow on the coffee powder.

[0023] Preferably, a guide plate 21 is fixedly connected to the inner side of the filter assembly 2. There are multiple guide plates 21, which are distributed in a circumferential array. During the extraction process, the guide plates can guide the water flow downward inside the filter, reducing the situation where the water flows out directly from the side and affects the extraction effect.

[0024] Preferably, the top side of the brewing head body 1 is also provided with a connecting protrusion 5, which can be quickly connected to the water outlet of the coffee machine with an L-shaped slot.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency extraction brewing head for a coffee machine, comprising a brewing head body (1) connected to the water outlet of the coffee machine, characterized in that, It also includes a filter assembly (2) connected below the brewing head body (1) and a protective shell (3) located on the outside of the filter; a frustum (14) is fixed to the bottom of the brewing head body (1) and is connected to the filter assembly (2) and the protective shell (3) through the frustum (14); the brewing head body (1) has a main water flow channel (11) along the axis; the bottom of the main water flow channel (11) has a central water flow channel (12) and a side water flow channel (13); the bottom of the main water flow channel (11) is connected to the top of the central water flow channel (12) and the side water flow channel (13).

2. The high-efficiency extraction and brewing head for a coffee machine according to claim 1, characterized in that, The brewing head body (1) is cylindrical in shape. The central water flow channel (12) is coaxially connected with the main water flow channel (11). One end of the side water flow channel (13) is arc-shaped and connected to the main water flow channel (11), while the other end is located outside the central water flow channel (12) and symmetrically distributed.

3. The high-efficiency extraction and brewing head for a coffee machine according to claim 1, characterized in that, The side of the frustum (14) is provided with external threads (15).

4. The high-efficiency extraction and brewing head for a coffee machine according to claim 1, characterized in that, The protective shell (3) is in the shape of an inverted cone with an annular top and an internal thread (32) on the inner side. The protective shell (3) is threaded to the frustum (14) through the internal thread (32) and the external thread (15). The bottom of the protective shell (3) has a guide port (31).

5. A high-efficiency extraction and brewing head for a coffee machine according to claim 1, characterized in that, The bottom surface of the truncated cone is provided with an annular groove (16) and an L-shaped slot (17). The annular groove (16) is located on the outside of the side water flow channel (13), and the L-shaped slot (17) is evenly distributed around the outer side of the annular groove (16).

6. The high-efficiency extraction and brewing head for a coffee machine according to claim 1, characterized in that, The filter assembly (2) is a filter molded in the shape of an inverted cone with a circular opening at the top and a ring support frame (22) fixedly attached. A rectangular protrusion (23) is fixedly attached to the outside of the ring support frame (22). The ring support frame (22) is located in the ring groove (16) and is connected to the L-shaped slot (17) through the rectangular protrusion (23).

7. A high-efficiency extraction and brewing head for a coffee machine according to claim 6, characterized in that, The rectangular protrusion (23) is positioned to match the L-shaped slot (17).

8. A high-efficiency extraction and brewing head for a coffee machine according to claim 1, characterized in that, The filter assembly (2) has a guide plate (21) fixedly attached to its inner side. There are multiple guide plates (21) arranged in a circular array.

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