Coffee grinder supporting counter-rotating dual burrs

Abstract

The utility model discloses a coffee bean grinder of supporting the counter-rotating of double grinding disc, including main body, bean grinder and drive system, be equipped with main control board in the main body, bean grinder is connected with the main body and is equipped with the first grinding disc and second grinding disc of forming the bean grinder space in the inside, the outer wall of bean grinder is equipped with the powder outlet channel of the communication bean grinder space, drive system is located in the bean grinder and is controlled to main control board, drive system passes through magnetic force coupling system to drive the counter-rotating of first grinding disc and second grinding disc, can rotate through first grinding disc and second grinding disc simultaneously, and based on the mode of the different mode of rotation direction, make coffee bean can realize the grinding to come out fast, and based on the centrifugal motion characteristic that rotation brought, reduce the powder accumulation condition, therefore make the uniformity of powder better, bring better flavor stability finally.

Description

Technical Field

[0001] This utility model relates to the field of coffee grinder manufacturing, and in particular to a coffee grinder that supports the opposite rotation of two grinding discs. Background Technology

[0002] With the ever-accelerating pace of life, people's demands for material goods are also increasing. Many consumers, seeking fresh, high-quality coffee, are placing higher demands on coffee grinders. A high-quality grinder requires a high-quality and efficient grinding blade assembly. Traditional grinding blades can be broadly categorized into flat grinding discs and conical grinding discs. Both structures consist of two grinding disc components. One disc is connected to the output shaft of a drive motor; as the motor rotates, the other disc remains stationary. This creates a static and rotating arrangement, ultimately processing the coffee beans to obtain the desired particle size. However, this method has a simple structure and requires a relatively long grinding time. More importantly, the stationary grinding component creates a "static zone" where coffee beans tend to accumulate or experience uneven force, leading to increased fine powder or uneven particle size. Therefore, a more rationally designed coffee grinder is urgently needed to address these technical problems. Utility Model Content

[0003] In view of the technical problems of existing coffee grinders, such as the relatively simple single-disc rotating grinding structure, the long grinding time required, and the poor uniformity of coffee bean powder output, this utility model provides a solution.

[0004] To achieve the above objectives, this utility model provides a coffee grinder that supports counter-rotating dual grinding discs, comprising: The main body, which contains a main control board; A grinding chamber, which is connected to the main body and has a first grinding disc and a second grinding disc inside to form a grinding space; the outer wall of the grinding chamber has a powder outlet channel communicating with the grinding space; A drive system located within the grinding chamber and controlled by the main control board; the drive system drives the first grinding disc and the second grinding disc to rotate in opposite directions via a magnetic coupling system.

[0005] As an improvement of this application, the drive system includes a drive motor; the magnetic coupling system includes an active coupling and a driven coupling with a preset gap, the active coupling is connected to the output shaft of the drive motor, and generates two magnetic fields in the radial direction of the output shaft; the two driven couplings are located in the magnetic fields and are fixedly connected to the first grinding disc and the second grinding disc in the same orientation, respectively.

[0006] As an improvement of this application, the drive system includes two drive motors; the magnetic coupling system includes an active coupling and a driven coupling with a preset gap; the second grinding disc is connected to the output shaft of any of the drive motors; the active coupling is fixed on the output shaft of the other drive motor and generates a corresponding magnetic field area; the driven coupling is located within the magnetic field area and is fixedly connected to the first grinding disc.

[0007] As an improvement of this application, the drive system includes a drive motor, a first linkage disk, and a second linkage disk; the magnetic coupling system includes an active coupling and a driven coupling with a preset gap; The drive motor drives the first linkage disk and the second linkage disk together. The first linkage disk is coaxially connected to the second grinding disk. The second linkage disk is connected to the active coupling through a linkage column. The active coupling generates a corresponding magnetic field area. The driven coupling is located within the magnetic field area and is fixedly connected to the first grinding disk.

[0008] As an improvement of this application, the outer sides of both the first linkage disk and the second linkage disk are provided with teeth, and the output shaft of the drive motor is provided with a meshing member that meshes with the two teeth.

[0009] As an improvement of this application, it also includes a bean storage bin, which is provided with a bean dropping pipe extending toward the second grinding disc. The first grinding disc and the corresponding driven coupling connected thereto are both sleeved on the bean dropping pipe, so that the bean dropping pipe communicates with the grinding space.

[0010] As an improvement of this application, the grinding chamber includes a first part for accommodating the second grinding disc and a second part for accommodating the first grinding disc and the bean storage chamber, wherein the second part is detachable from the first part.

[0011] As an improvement of this application, the grinding chamber further includes a main shell, which is connected to the second part by a threaded structure.

[0012] As an improvement to this application, the drive motor is either a brushless motor or a brushed motor.

[0013] As an improvement of this application, an electrostatic probe is also provided in the powder outlet channel, and the electrostatic probe is electrically connected to the main control board.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides a coffee grinder that supports dual grinding discs rotating in opposite directions, including a main body, a grinding chamber, and a drive system; a main control board is provided inside the main body; the grinding chamber is connected to the main body and has a first grinding disc and a second grinding disc forming a grinding space inside; the outer wall of the grinding chamber has a powder outlet channel communicating with the grinding space; the drive system is located inside the grinding chamber and is controlled by the main control board; the drive system drives the first grinding disc and the second grinding disc to rotate in opposite directions through a magnetic coupling system; the drive system and the magnetic coupling system cooperate to enable the first grinding disc and the second grinding disc to rotate simultaneously in opposite directions, so that the coffee beans can be quickly ground into powder, and based on the centrifugal motion characteristics brought about by the rotation, the powder accumulation is reduced, thus making the powder more uniform and ultimately bringing better flavor stability. Attached Figure Description

[0015] Figure 1 This is a perspective view of Embodiment 1 of this application; Figure 2 This is an exploded view of Embodiment 1 of this application; Figure 3 This is a cross-sectional view of Embodiment 1 of this application; Figure 4 This is a schematic diagram illustrating the cooperation between the drive system and the magnetic coupling system in Embodiment 1 of this application; Figure 5 This is a perspective view of Embodiment 2 of this application; Figure 6 This is an exploded view of Embodiment 2 of this application; Figure 7 This is a cross-sectional view of Embodiment 2 of this application; Figure 8 This is a schematic diagram illustrating the cooperation between the drive system and the magnetic coupling system in Embodiment 2 of this application; Figure 9 This is a perspective view of Embodiment 3 of this application; Figure 10 This is an exploded view of Embodiment 3 of this application; Figure 11 This is a cross-sectional view of Embodiment 3 of this application; Figure 12 This is a schematic diagram illustrating the cooperation between the drive system and the magnetic coupling system in Embodiment 3 of this application; Figure 13 This is a schematic diagram of the soybean storage silo structure of this application.

[0016] The symbols for the main components are explained below: 1. Main body; 11. Main control board; 2. Grinding chamber; 21. Flour outlet; 22. Main shell; 3. First grinding disc; 4. Second grinding disc; 5. Drive system; 51. Drive motor; 52. First linkage plate; 53. Second linkage plate; 54. Gear components; 55. Linkage column; 6. Magnetic coupling system; 61. Driving coupling; 62. Driven coupling; 7. Bean storage bin; 71. Bean dropping channel. Detailed Implementation

[0017] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0018] In the following description, specific examples are given to provide a more in-depth understanding of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. It should be understood that the specific embodiments described are only used to explain the present invention and are not intended to limit the present invention.

[0019] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0020] To address the aforementioned technical problems, this application provides a coffee grinder that supports counter-rotating dual grinding discs. Please refer to the appendix. Figure 1 To be continued Figure 13 The system includes a main body 1, a grinding chamber 2, and a drive system 5. The main body 1 is equipped with a main control board 11. The grinding chamber 2 is connected to the main body 1 and has a first grinding disc 3 and a second grinding disc 4 forming a grinding space inside. The outer wall of the grinding chamber 2 is equipped with a powder outlet channel 21 that connects to the grinding space. The drive system 5 is located inside the grinding chamber 2 and is controlled by the main control board 11. The drive system 5 drives the first grinding disc 3 and the second grinding disc 4 to rotate in opposite directions through a magnetic coupling system 6. The following describes the solution of this application in a specific application scenario: First, the coffee beans to be processed are placed in the grinding space. The main control board 11 starts the drive system 5 through a reasonable control circuit, thereby providing driving force. The magnetic coupling system 6 drives the first grinding disc 3 and the second grinding disc 4 to achieve opposite rotational movements. In this application, "opposite" means that the first grinding disc 3 moves clockwise, while the second grinding disc 4 moves counterclockwise. The magnetic coupling system 6, with its added linkage, achieves a non-physical contact solution for the grinding discs, avoiding motor overload failure due to excessive torque required by the coffee beans. This ensures better grinding quality. In terms of grinding, the first grinding disc 3 and the second grinding disc 4 rotate in tandem. The centrifugal motion caused by the rotation reduces powder accumulation and avoids powder stacking, creating a more active and uniform grinding environment. The coffee beans are uniformly pulled into the teeth of the expected grinding stage, resulting in a more uniform particle size distribution. In terms of final blending, this means a clearer flavor and less bitterness. In actual use, although the heat and static electricity generated by the more efficient and intense grinding process exist, the more uniform force makes it less likely for coffee powder to adhere to the grinding disc and form clumps. The final powder will be more fluffy, which helps with subsequent powder distribution and extraction.

[0021] The specific cooperation between the drive system 5 and the magnetic coupling system 6 is described below with several implementation methods. It is worth noting that those skilled in the art can appropriately use corresponding housings, buttons, and other components to achieve the containment and protection of important components. However, since the details of this solution are not the focus of this application, they will not be elaborated. The implementation by those skilled in the art should be taken as the standard. Example 1:

[0022] Please see the appendix Figure 1 To be continued Figure 4In this embodiment, the drive system 5 includes a drive motor 51; the magnetic coupling system 6 includes an active coupling 61 and a driven coupling 62 with a preset gap. The active coupling 61 is connected to the output shaft of the drive motor 51 and generates two magnetic induction regions in the radial direction of the output shaft; the two driven couplings 62 are located within the magnetic induction regions and are fixedly connected to the first grinding disc 3 and the second grinding disc 4 in the same orientation, respectively. In this scheme, a drive motor 51 drives the first grinding disc 3 and the second grinding disc 4 to make different rotational movements. Specifically, when the drive motor 51 rotates, the active coupling 61 rotates accordingly. At this time, due to the induction effect of the magnetic field, the two driven couplings 62 also generate corresponding induction. Through a suitable magnetic force distribution design, the two driven couplings 62 rotate in the clockwise and counterclockwise directions, respectively, ultimately driving the first grinding disc 3 and the second grinding disc 4 to rotate in opposite directions. A grinding disc 3 and a second grinding disc 4 rotate in opposite directions to rapidly grind coffee beans. Within the grinding space, the coffee beans undergo coarse grinding, fine grinding, and high-precision grinding sequentially to obtain coffee powder of the appropriate particle size. Specifically, the magnetic arrangement of the active coupling 61 and the driven coupling 62 involves multiple sets of N and S units within each coupling. The N and S units are arranged at intervals around their axes to ensure that the active coupling 61 and the driven coupling 62 maintain the expected magnetic adsorption strength. Since the two driven couplings 62 need to rotate in opposite directions, their magnetic arrangements are matched in opposite directions. Under this magnetic arrangement, the active coupling 61 rotates with the motor, which in turn drives the two driven couplings 62 located within the induction space to rotate clockwise and counterclockwise, respectively. Example 2:

[0023] Please see the appendix Figure 5 To be continued Figure 8 In this embodiment, the drive system 5 includes two drive motors 51; the magnetic coupling system 6 includes an active coupling 61 and a driven coupling 62 with a preset gap; the second grinding disc 4 is connected to the output shaft of any one of the drive motors 51; the active coupling 61 is fixed on the output shaft of the other drive motor 51 and generates a corresponding magnetic field area; the driven coupling 62 is located within the magnetic field area and is fixedly connected to the first grinding disc 3; specifically, in this application, the first drive motor 51 directly connects to and drives the second grinding disc 4, while the second drive motor 51 drives the first grinding disc 3 through the active coupling 61 and the driven coupling 62. The two drive motors 51 are controlled collaboratively by the main control board 11 to achieve opposite rotation of the first grinding disc 3 and the second grinding disc 4; in this scheme, the two drive motors 51 work collaboratively, so there is no need to worry about insufficient torque in the initial stage of stirring. Example 3:

[0024] Please see the appendix Figure 9 To be continued Figure 12In this embodiment, the drive system 5 includes a drive motor 51, a first linkage disk 52, and a second linkage disk 53; the magnetic coupling system 6 includes an active coupling 61 and a driven coupling 62 with a preset gap; wherein, the drive motor 51 drives the first linkage disk 52 and the second linkage disk 53 together, the first linkage disk is coaxially connected to the second grinding disk 4; the second linkage disk 53 is connected to the active coupling 61 through a linkage column 55, the active coupling 61 generates a corresponding magnetic field area, and the driven coupling 62 is located within the magnetic field area and is fixedly connected to the first grinding disk 3; in a specific solution, this solution also achieves the effect of one drive motor 51 driving the first grinding disk 3 and the second grinding disk 4. In the example, under the action of the first linkage disk 52 and the second linkage, the drive motor 51 can maintain a consistent transmission level and has better synchronous rotation capability, which can greatly improve the stability of the operation. In the specific solution, the outer sides of the first linkage disk 52 and the second linkage disk 53 are provided with teeth, and the output shaft of the drive motor 51 is provided with a meshing member 54 that meshes with the two teeth. The meshing member 54 drives the first linkage disk 52 and the second linkage disk 53. The physical connection can significantly improve the stability of the drive, thereby making the entire drive system 5 and the magnetic coupling system 6 exhibit strong linkage coordination, and finally enabling the first grinding disk 3 and the second grinding disk 4 to work efficiently.

[0025] For the specific soybean dropping plan, it also includes soybean storage bin 7; please refer to the appendix. Figure 13 The bean storage bin 7 is equipped with a bean drop pipe extending toward the second grinding disc 4. The first grinding disc 3 and the corresponding driven coupling 62 connected to it are both fitted onto the bean drop pipe so that the bean drop pipe connects to the grinding space. In actual use, the user places coffee beans in the bean storage bin 7, and the automatic feeding of coffee beans is achieved based on gravity. The addition of the bean drop channel 71 allows coffee beans to smoothly enter the grinding space without structural interference when using the aforementioned drive system 5 and magnetic coupling system 6.

[0026] In this embodiment, the grinding chamber 2 includes a first part for accommodating the second grinding disc 4 and a second part for accommodating the first grinding disc 3 and the bean storage chamber 7. The second part is detachable from the first part. In actual use, the detachment of the second part allows for immediate cleaning and maintenance of the first grinding disc 3. With the popularization of household dishwashers, the bean storage chamber 7 in the second part can be assembled using a disassembly method, making it convenient for users to modularize the second part and put it into the dishwasher for cleaning.

[0027] In this embodiment, the grinding chamber 2 also includes a main shell 22, which is connected to the second part by a threaded structure. The threaded structure allows the first part and the second part to be adjustable. The first grinding disc 3 and the second grinding disc 4 have different spacings based on the different assembly degrees of the first part and the second part, thereby adjusting the size of the grinding space so that the user can obtain the corresponding particle size range according to the desired coffee type, so as to give full play to the quality characteristics of the coffee beans.

[0028] In this embodiment, the drive motor 51 is either a brushless motor or a brushed motor, preferably a brushless motor. Compared with brushed motors, brushless motors have advantages in terms of quietness, running accuracy and safety, and are more suitable for the use of coffee grinders.

[0029] In this embodiment, an electrostatic probe is also provided in the powder dispensing channel 21, and the electrostatic probe is electrically connected to the main control board 11; the electrostatic probe can effectively eliminate static electricity and prevent coffee powder from sticking to the wall.

[0030] The advantages of this utility model are: 1. The addition of linkage to the magnetic coupling system can realize a non-physical contact solution for the grinding disc, which can avoid motor overload failure due to excessive torque required by coffee beans; 2. Regarding the quality of grinding, the first and second grinding discs rotate in tandem. The centrifugal motion caused by the rotation reduces powder accumulation and avoids powder stacking, creating a more active and uniform grinding environment. The coffee beans are uniformly drawn into the teeth of the intended grinding stage, resulting in a more uniform particle size distribution. In terms of the final blend, this means a clearer flavor and less bitterness.

[0031] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A coffee grinder supporting dual-disc counter-rotating grinding wheels, characterized in that, include: The main body, which contains a main control board; A grinding chamber, which is connected to the main body and has a first grinding disc and a second grinding disc inside to form a grinding space; The outer wall of the grinding chamber is provided with a powder outlet channel that connects to the grinding space; The drive system is located within the grinding chamber and is controlled by the main control board; The drive system drives the first and second grinding discs to rotate in opposite directions via a magnetic coupling system.

2. A coffee grinder supporting dual-disc counter-rotating grinding wheels according to claim 1, characterized in that, The drive system includes a drive motor; the magnetic coupling system includes an active coupling and a driven coupling with a preset gap, the active coupling is connected to the output shaft of the drive motor and generates two magnetic fields in the radial direction of the output shaft; the two driven couplings are located in the magnetic fields and are fixedly connected to the first grinding disc and the second grinding disc in the same orientation, respectively.

3. A coffee grinder supporting dual-disc counter-rotating grinding wheels according to claim 1, characterized in that, The drive system includes two drive motors; the magnetic coupling system includes an active coupling and a driven coupling with a preset gap; the second grinding disc is connected to the output shaft of any of the drive motors; the active coupling is fixed to the output shaft of the other drive motor and generates a corresponding magnetic field region; the driven coupling is located within the magnetic field region and is fixedly connected to the first grinding disc.

4. A coffee grinder supporting counter-rotating dual grinding discs according to claim 1, characterized in that, The drive system includes a drive motor, a first linkage plate, and a second linkage plate; the magnetic coupling system includes an active coupling and a driven coupling with a preset gap; The drive motor drives the first linkage disk and the second linkage disk together. The first linkage disk is coaxially connected to the second grinding disk. The second linkage disk is connected to the active coupling through a linkage column. The active coupling generates a corresponding magnetic field area. The driven coupling is located within the magnetic field area and is fixedly connected to the first grinding disk.

5. A coffee grinder supporting dual-disc counter-rotating grinding wheels according to claim 4, characterized in that, Both the first and second linkage discs have teeth on their outer sides, and the output shaft of the drive motor has a meshing component that meshes with the two teeth.

6. A coffee grinder supporting dual-disc counter-rotating grinding wheels according to any one of claims 2-5, characterized in that, It also includes a bean storage bin, which has a bean dropping pipe extending toward the second grinding disc. The first grinding disc and the corresponding driven coupling connected thereto are both sleeved on the bean dropping pipe so that the bean dropping pipe connects to the grinding space.

7. A coffee grinder supporting dual-disc counter-rotating grinding wheels according to claim 6, characterized in that, The grinding chamber includes a first part for accommodating the second grinding disc and a second part for accommodating the first grinding disc and the bean storage chamber, the second part being detachable from the first part.

8. A coffee grinder supporting counter-rotating dual grinding discs according to claim 7, characterized in that, The grinding chamber also includes a main shell, which is connected to the second part by a threaded structure.

9. A coffee grinder supporting counter-rotating dual grinding discs according to any one of claims 2-5, characterized in that, The drive motor is either a brushless motor or a brushed motor.

10. A coffee grinder supporting counter-rotating dual grinding discs according to claim 1, characterized in that, An electrostatic probe is also provided in the powder outlet channel, and the electrostatic probe is electrically connected to the main control board.

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