Grinding assembly and grinder thereof
By employing a dual plasma generator design in the coffee grinder, the problem of powder flying caused by the limited range of the plasma generator during grinding is solved, achieving full electrostatic control and improving the user experience of the coffee grinder and the quality of the coffee.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN CARIA ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-03-25
- Publication Date
- 2026-05-29
AI Technical Summary
The limited range of the ion generator in existing coffee grinders means that powder may still fly off the grinder after leaving the powder outlet due to static electricity on the friction belt.
The design employs a dual plasma generator: the first plasma generator extends into the powder outlet channel to neutralize the static electricity generated during grinding within the channel, while the second plasma generator is located outside the powder outlet channel to neutralize the static electricity generated on the friction belt after the powder leaves the channel.
It effectively prevents powder from sticking in the powder outlet channel and from flying powder after leaving the channel, achieving electrostatic control throughout the entire process from grinding to powder output, thus improving the user experience of the grinder and the quality of coffee.
Smart Images

Figure CN224291756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bean processing, and in particular to a grinding component and a bean grinder thereof. Background Technology
[0002] Coffee grinders, as an indispensable piece of equipment in modern coffee making, primarily function to grind coffee beans into powder for subsequent brewing. With advancements in technology, coffee grinder designs have become increasingly intelligent and sophisticated, aiming to provide users with a superior grinding experience and enhanced coffee flavor.
[0003] Currently, some advanced coffee grinders have adopted plasma generators to neutralize static electricity. This technology aims to prevent coffee grounds from adhering to the outlet channel during grinding, thus ensuring smooth flow and consistent coffee quality. The plasma generator effectively neutralizes the static electricity on the grinder surface by releasing positive and negative ions, significantly reducing the adhesion of grounds within the outlet channel.
[0004] However, while plasma generators play a crucial role in coffee grinders, their effect is relatively limited. Because plasma generators are typically installed inside the grinder or within the powder outlet, the ion field they produce cannot completely cover all areas of the ground coffee after it leaves the outlet. Therefore, once the ground coffee leaves the outlet, it can still rub against the outside air, re-accumulate static electricity, and cause powder to fly around. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, this utility model proposes a grinding component and a coffee grinder, which can solve the problem that even if the current coffee grinder uses a plasma generator to neutralize static electricity and prevent the ground powder from adhering to the powder outlet channel, the limited range of the plasma generator causes the ground powder to fly again due to friction with the outside air after leaving the powder outlet channel.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] The present invention provides a grinding assembly, including a grinding chamber, a grinding blade assembly disposed in the grinding chamber, a powder outlet channel disposed in connection with the grinding chamber, and a first plasma generator and a second plasma generator. The first working end of the first plasma generator extends into the powder outlet channel, and the second working end of the second plasma generator is located outside the powder outlet channel.
[0008] The preferred technical solution of this utility model is that the second working end is located below the powder outlet channel.
[0009] The preferred technical solution of this utility model is that a first protective chamber is provided on the upper side of the powder outlet channel, the first protective chamber is connected to the powder outlet channel, and the first working end is located in the first protective chamber.
[0010] The preferred technical solution of this utility model is that a second protective chamber is provided outside the powder outlet channel, the second protective chamber is connected to the outside of the powder outlet channel, and the second working end is located inside the second protective chamber.
[0011] The preferred technical solution of this utility model is that the first working end and the second working end are needle-shaped.
[0012] The preferred technical solution of this utility model is that the first working end and the second working end are arranged in parallel.
[0013] The preferred technical solution of this utility model is that the first working end forms an angle with the bottom of the grinding blade assembly, the angle being 30-60 degrees, and the second working end forms an angle with the bottom of the grinding blade assembly, the angle being 30-60 degrees.
[0014] The present invention provides a coffee grinder, including a body, and the body is provided with the grinding component of the above-mentioned technical solution.
[0015] The preferred technical solution of this utility model is that it further includes a receiver, and the second working end forms an angle with the bottom of the receiver, the angle being 40-50 degrees.
[0016] The preferred technical solution of this utility model is that a receiving frame is also provided on the machine body, and a slot is provided on the receiving frame.
[0017] The beneficial effects of this utility model are:
[0018] This invention proposes a grinding assembly and a coffee grinder thereof. The core of this assembly lies in combining a first plasma generator and a second plasma generator. The first active end of the first plasma generator extends into the powder outlet channel, directly neutralizing any static electricity that may be generated during grinding, effectively reducing powder adhesion within the channel. The second active end of the second plasma generator is located outside the powder outlet channel. Thus, when the powder leaves the channel and comes into contact with the outside air, even if it regains static electricity due to friction, it can be immediately neutralized by ions released by the second plasma generator, preventing powder splattering. This invention not only solves the problem of static adhesion of powder within the powder outlet channel but also effectively prevents powder splattering caused by re-charging after leaving the channel. It achieves effective static electricity control throughout the entire grinding process, significantly improving the user experience and coffee quality. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 A three-dimensional coffee grinder according to Embodiment 1 of this utility model Figure 1 ;
[0021] Figure 2 A three-dimensional coffee grinder according to Embodiment 1 of this utility model Figure 1
[0022] Figure 3 This is a top view of a coffee grinder according to Embodiment 1 of this utility model;
[0023] Figure 4 for Figure 3 A sectional view along the AA direction;
[0024] Figure 5 This is a schematic diagram showing the included angle of a coffee grinder according to Embodiment 1 of this utility model;
[0025] Figure 6 for Figure 4 Enlarged view of part A in the image;
[0026] Figure 7 This is a perspective view of the components including the first protective chamber according to Embodiment 1 of the present invention;
[0027] Figure 8 This is a perspective view of the component including the second protective chamber according to Embodiment 1 of the present invention.
[0028] Figure 9 This is a schematic diagram of a coffee grinder with a coffee filter installed according to Embodiment 1 of this utility model.
[0029] In the picture:
[0030] 1-Grinding chamber; 2-Grinding blade assembly; 3-Powder outlet channel; 41-First working end; 42-Second working end; 51-First protective chamber; 52-Second protective chamber; 6-Body; 7-Receiver; 8-Receiver frame; 81-Card slot; 9-Coffee machine filter. Detailed Implementation
[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0032] Example 1
[0033] This embodiment provides a coffee grinder, such as... Figure 1-9 As shown, the machine includes a body 6, which is equipped with a grinding assembly. Specifically, the grinding assembly includes a grinding chamber 1, a grinding blade assembly 2 disposed within the grinding chamber 1, and a powder outlet channel 3 connected to the grinding chamber 1. It includes a first plasma generator and a second plasma generator. The first working end 41 of the first plasma generator extends into the powder outlet channel 3, and the second working end 42 of the second plasma generator is located outside the powder outlet channel 3. The core of this embodiment's technical solution lies in combining the first and second plasma generators to expand the range and effect of electrostatic neutralization. Specifically, the grinding assembly includes a grinding chamber containing a high-efficiency grinding blade assembly for finely grinding coffee beans into powder. After grinding, the powder is discharged through the powder outlet channel connected to the grinding chamber. To address the limited range of action of plasma generators in traditional coffee grinders, this solution innovatively introduces a first and a second plasma generator. The first plasma generator's first active end extends into the coffee outlet channel, directly neutralizing any static electricity that may be generated in the grinder within the channel, effectively reducing coffee powder adhesion. The second plasma generator goes a step further, with its second active end positioned outside the outlet channel. This way, when the coffee powder leaves the channel and comes into contact with the outside air, even if it regains static electricity due to friction, it can be immediately neutralized by ions released by the second plasma generator, thus preventing coffee powder from flying out. Through this dual plasma generator design, this grinding assembly not only solves the problem of static adhesion of coffee powder in the outlet channel but also effectively prevents coffee powder from flying out after leaving the channel due to re-charging. It achieves effective static electricity control throughout the entire grinding process, significantly improving the user experience of the grinder and the quality of the coffee.
[0034] Preferably, the second action end 42 is located below the powder outlet channel 3. This design fully considers the movement trajectory of the powder after leaving the powder outlet channel and the electrostatic generation mechanism. The powder will fall naturally under gravity, and the second action end below ensures that the powder is neutralized by ions immediately during the fall or before landing, effectively preventing the powder from scattering due to static electricity. In addition, this layout reduces the influence of the external environment on the plasma generator, improving the stability and efficiency of electrostatic neutralization. At the same time, this design facilitates maintenance and cleaning because the powder does not easily accumulate around the plasma generator, extending the service life of the equipment. Therefore, placing the second action end below the powder outlet channel not only improves the accuracy of electrostatic control but also enhances the overall performance of the equipment and user satisfaction.
[0035] Preferably, a first protective chamber 51 is provided on the upper side of the powder outlet channel 3, and the first protective chamber 51 is connected to the powder outlet channel 3. The first active end 41 is located inside the first protective chamber 51. The first protective chamber provides a relatively closed and stable working environment for the plasma generator, effectively isolating the dust and heat generated during the grinding process from affecting the plasma generator and extending its service life. At the same time, the design of the protective chamber also ensures that the plasma can act uniformly and stably on the grinding powder in the powder outlet channel, improving the efficiency and effect of electrostatic neutralization. In addition, for safety reasons, it prevents users from touching the first active end and causing danger. Furthermore, a second protective chamber 52 is provided outside the powder outlet channel 3, and the second protective chamber 52 is connected to the outside of the powder outlet channel 3. The second active end 42 is located inside the second protective chamber 52. The second protective chamber not only provides additional protection for the plasma generator, preventing dust, moisture and other impurities in the external environment from affecting its normal operation, but also ensures that the plasma can act stably and efficiently on the grinding powder leaving the powder outlet channel.
[0036] Preferably, the first working end 41 and the second working end 42 are needle-shaped. Specifically, the working ends are divided into a positive electrode needle and a negative electrode needle, which are symmetrically arranged. The needle-shaped design allows the plasma to act more concentratedly and efficiently on the grinding surface, improving the accuracy and efficiency of electrostatic neutralization. At the same time, the needle-shaped working ends can also reduce the diffusion and waste of plasma in the air, reducing energy consumption and cost. In addition, this design makes it easy to adjust the position and angle of the plasma generator to adapt to different grinding amounts and electrostatic conditions. Therefore, the needle-shaped working end design not only improves the performance of electrostatic control but also enhances the flexibility and adaptability of the equipment.
[0037] Preferably, the first working end 41 and the second working end 42 are arranged in parallel. This parallel arrangement ensures that the plasma is uniformly distributed along the grinding flow direction, avoiding blind spots and dead zones in electrostatic neutralization. This design not only improves the comprehensiveness and uniformity of electrostatic control but also ensures that the grinding powder is adequately neutralized by ions throughout the entire flow process. Simultaneously, the parallel arrangement of the working ends also helps reduce interference and conflict between plasmas, improving the stability and efficiency of electrostatic neutralization.
[0038] Preferably, the first working end 41 forms an angle α with the bottom of the grinding blade assembly 2, with the angle α being 30-60 degrees, and the second working end 42 forms an angle β with the bottom of the grinding blade assembly 2, with the angle β being 30-60 degrees. Having both working ends within this angle range allows for more effective action on the critical area of the grinding powder flow, improving the targeting and efficiency of electrostatic neutralization.
[0039] Preferably, this embodiment takes into account the possibility of plasma generator failure, so it is equipped with two independent plasma generators. The two plasma generators work simultaneously to ensure that if one of them fails, the other can still work, thus ensuring the normal operation of the coffee grinder.
[0040] Preferably, the grinder also includes a receiver 7 for receiving the outflowing ground coffee powder. The second working end 42 forms an angle γ with the bottom of the receiver 7, which is 40-50 degrees. This angle range can more effectively act on the main area after the ground coffee powder leaves the powder outlet channel, improving the targeting and efficiency of neutralizing external static electricity.
[0041] Furthermore, the body 6 is also equipped with a receiving frame 8, which has a slot 81. The cup-shaped receiving device can be placed on the receiving frame 8 through this receiving frame. Figure 9 As shown, the coffee filter 9 can be snapped into the receiving frame 8 to collect coffee powder through the provided slot 81, thereby increasing the application range of the product.
[0042] This utility model has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. This utility model is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are all within the protection scope of this utility model.
Claims
1. A grinding assembly, comprising a grinding chamber (1), a grinding blade assembly (2) disposed within the grinding chamber (1), and a powder outlet channel (3) connected to the grinding chamber (1), characterized in that: It includes a first plasma generator and a second plasma generator. The first working end (41) of the first plasma generator extends into the powder outlet channel (3), and the second working end (42) of the second plasma generator is located outside the powder outlet channel (3).
2. The grinding assembly according to claim 1, characterized in that: The second working end (42) is located below the powder outlet channel (3).
3. The grinding assembly according to claim 1, characterized in that: A first protective chamber (51) is provided on the upper side of the powder outlet channel (3). The first protective chamber (51) is connected to the powder outlet channel (3), and the first working end (41) is located in the first protective chamber (51).
4. The grinding assembly according to claim 1, characterized in that: A second protective chamber (52) is provided outside the powder outlet channel (3). The second protective chamber (52) is connected to the outside of the powder outlet channel (3), and the second working end (42) is located inside the second protective chamber (52).
5. The grinding assembly according to claim 1, characterized in that: The first working end (41) and the second working end (42) are needle-shaped.
6. The grinding assembly according to claim 5, characterized in that: The first working end (41) and the second working end (42) are arranged in parallel.
7. The grinding assembly according to claim 5, characterized in that: The first working end (41) forms an angle with the bottom of the grinding knife assembly (2), and the angle is 30-60 degrees; The second working end (42) forms an angle with the bottom of the grinding knife assembly (2), the angle being 30-60 degrees.
8. A coffee grinder, characterized in that: Includes a body (6), which is provided with a grinding assembly as described in any one of claims 1-7.
9. The coffee grinder according to claim 8, characterized in that: It also includes a receiver (7), wherein the second working end (42) forms an angle with the bottom of the receiver (7), the angle being 40-50 degrees.
10. The coffee grinder according to claim 8, characterized in that: The body (6) is also provided with a support frame (8), and the support frame is provided with a slot (81).