Antistatic structure of bean grinding device
By setting up the electrode columns with guide structures and multiple sets of ion needles in the bean grinding device, the angle alignment problem after the inner and outer grinding wheels of the bean grinding device is solved, ensuring that the static eliminator works normally and improving the brewing quality of coffee.
Patent Information
- Application Number
- CN202422304492.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-21
AI Technical Summary
In a bean grinding device with cone grinding, the inner and outer grinding wheels must be aligned at the original angle after disassembly, otherwise the positive and negative ion needles of the electrostatic eliminator will not work properly, affecting the brewing quality of the coffee.
A guide structure is provided between the inner grinding wheel assembly and the outer grinding wheel assembly, including an electrode column of the electrostatic eliminator and multiple sets of ion needles to ensure that when the inner grinding wheel assembly is reinstalled at multiple different angles, the ion needles can be in contact with the electrode column to achieve static elimination.
It ensures that the static eliminator can still work normally after disassembly and assembly many times, improving the brewing quality of coffee.
Smart Images
Figure CN223143346U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of beverage machines, and particularly to an antistatic structure of a bean grinding device. Background Art
[0002] With the increasing improvement of people's coffee drinking experience, in many cases, freshly roasted coffee beans are used to grind coffee powder and then brew coffee. Therefore, a bean grinding device has become a conventional configuration of a beverage machine for making coffee. Generating static electricity during the process of grinding coffee beans is a common problem, mainly due to the friction during grinding of coffee beans and the action of moisture and oil inside the beans. Static electricity can cause coffee powder to adhere to the powder outlet of the bean grinding device or splash into the surrounding environment, affecting the uniformity of coffee powder distribution, and thus may affect the brewing quality of coffee.
[0003] To solve the static electricity problem of coffee powder in the bean grinding device, conductive materials (such as metals) can be used to manufacture the powder receiving cup and other components, which can effectively conduct the static electricity; or the geometric shape of the powder outlet of the bean grinding device can be adjusted to change the powder dropping mode of coffee powder, increase the aggregation and stability of the powder layer, thereby reducing the influence of static electricity; or static dissipation materials can be used to absorb and dissipate static electricity to prevent static electricity accumulation and cause coffee powder to scatter; or the powder outlet speed of coffee powder can be slowed down by using a mesh or silicone gasket to increase the residence time of the powder layer, which helps to dissipate static electricity; or the grinding speed of the bean grinding device can be slowed down because a lower rotation speed reduces friction and heat generation, which helps to reduce the formation of static electricity.
[0004] In current bean grinding devices, it is relatively common to use the method of ion neutralization to eliminate static electricity in coffee powder, that is, using a static eliminator. Positive and negative ions are generated by the positive and negative ion needles extending into the powder dropping port to neutralize the charges on the coffee powder flowing through the powder dropping port, so as to eliminate the static electricity on the coffee powder. This method has mature technology, simple structure, good effect and high efficiency in neutralizing and eliminating static electricity.
[0005] However, in order to improve the cleaning and maintenance performance of the bean grinding device, the bean grinding device generally adopts a combined and detachable structure. In a bean grinding device using the conical grinding method, the positive and negative ion needles of the static eliminator need to penetrate the inner and outer grinding wheels and then extend into the powder dropping port. After the inner and outer grinding wheels are disassembled, they must be aligned and reinstalled at the original angle to make the positive and negative ion needles work normally. Incorrect angles or misalignments will cause the positive and negative ion needles to fail to work normally, losing the effect of eliminating static electricity and affecting the brewing quality of coffee. Summary of the Utility Model
[0006] The purpose of the present utility model is to provide an anti-static structure for a bean grinding device, so as to solve the problem in the prior art that in a bean grinding device using the conical grinding method, after the inner and outer grinding wheels are disassembled, they must be aligned and reinstalled at the original angle to enable the positive and negative ion needles of the static eliminator to work properly. If the angle is incorrect or there is a deviation, the positive and negative ion needles cannot work properly, resulting in the loss of the static elimination effect and affecting the brewing quality of coffee, so as to overcome the deficiencies of the prior art.
[0007] The present utility model provides an anti-static structure for a bean grinding device through the following technical solutions, which includes an inner grinding wheel assembly, an outer grinding wheel assembly and a driving device. The outer grinding wheel assembly includes an outer grinding wheel and an outer grinding wheel seat. The outer grinding wheel is arranged in the outer grinding wheel seat, and the outer grinding wheel seat is also provided with a static eliminator. The inner grinding wheel assembly includes an inner grinding wheel and an inner grinding wheel seat. The inner grinding wheel is arranged in the inner grinding wheel seat. The driving device drives the outer grinding wheel and the inner grinding wheel to rotate relatively to grind coffee beans. A first connection structure is provided between the inner grinding wheel assembly and the outer grinding wheel assembly to realize the disassembly and connection of the inner grinding wheel assembly and the outer grinding wheel assembly. A guiding structure is provided between the inner grinding wheel assembly and the outer grinding wheel assembly. The guiding structure is provided with electrode columns of the static eliminator and multiple groups of ion needles adapted to the electrode columns, so that when the inner grinding wheel assembly is connected to the outer grinding wheel assembly at multiple different angles, the ion needles are in contact connection with the electrode columns to eliminate the static electricity carried by the ground coffee powder.
[0008] Further, the guiding structure includes first guiding blocks circumferentially distributed on the inner wall of the outer grinding wheel seat and second guiding blocks circumferentially distributed on the outer wall of the inner grinding wheel seat. A first guiding groove is formed between the first guiding blocks, a second guiding groove is formed between the second guiding blocks, the first guiding blocks are adapted to the second guiding groove, and the second guiding blocks are adapted to the first guiding groove.
[0009] Further, the electrode column is arranged in one of the first guiding blocks or the first guiding groove, and the ion needles are arranged in the second guiding blocks or the second guiding groove.
[0010] Further, the electrode column is arranged in the first guiding block, and the ion needles are arranged in the second guiding groove.
[0011] Further, the static eliminator is arranged on the outside of the outer grinding wheel seat, the electrode column penetrates through the outer grinding wheel seat, and an elastic structure is further arranged in the electrode column to enable the electrode column to retract or pop out under pressure.
[0012] Further, the inner grinding wheel assembly further includes a base, the base includes a fixing ring and a seat body, and the first connection structure includes a first external thread provided on the outer wall of the outer grinding wheel seat and a first internal thread provided on the inner wall of the fixing ring. The first external thread is connected to the first internal thread to realize the connection between the base and the outer grinding wheel seat.
[0013] Further, the inner grinding wheel assembly further includes an adapter ring. A second connection structure is provided between the adapter ring and the inner grinding wheel seat. The adapter ring and the inner grinding wheel seat are connected through the second connection structure. A third connection structure is provided between the adapter ring and the base. The adapter ring and the base are connected through the third connection structure.
[0014] Further, the second connection structure includes an annular groove provided on the outer wall of the inner grinding wheel seat and a convex ring provided on the inner wall of the adapter ring. The convex ring is connected to the annular groove to realize the connection between the adapter ring and the inner grinding wheel seat.
[0015] Further, the third connection structure includes a third external thread provided on the outer wall of the adapter ring and a third internal thread provided on the inner wall of the fixing ring. The third internal thread is located below the first internal thread. The third external thread is connected to the third internal thread to realize the connection between the adapter ring and the fixing ring.
[0016] Further, a conical hopper is further provided in the base for collecting and discharging the coffee powder flowing through the ion needles in the inner grinding wheel seat.
[0017] The utility model has the following beneficial effects: on the guiding structure between the inner grinding wheel assembly and the outer grinding wheel assembly, the electrode column of the static eliminator and multiple groups of ion needles adapted to the electrode column are provided, so that when the inner grinding wheel assembly is disassembled and reinstalled into the outer grinding wheel assembly at multiple different angles, the ion needles are in contact connection with the electrode column and work normally, ensuring the static elimination effect and improving the brewing quality of coffee. Description of the Drawings
[0018] Figure 1 It is an overall schematic diagram of the antistatic structure of a bean grinding device according to the utility model.
[0019] Figure 2 It is an exploded schematic diagram of the antistatic structure of a bean grinding device according to the utility model.
[0020] Figure 3 It is a schematic diagram of the guiding structure of the antistatic structure of a bean grinding device according to the utility model.
[0021] Figure 4 It is a vertical cross-sectional structure schematic diagram of the antistatic structure of a bean grinding device according to the utility model.
[0022] Figure 5 For Figure 4 an enlarged schematic view of part A of
[0023] Among them, Figures 1 to 5 the corresponding relationship between the reference numerals and the component names in
[0024] 1 inner grinding wheel assembly, 2 outer grinding wheel assembly, 3 driving device, 11 inner grinding wheel, 12 inner grinding wheel seat, 13 base, 14 adapter ring, 21 outer grinding wheel, 22 outer grinding wheel seat, 41 first external thread, 42 first internal thread, 43 annular groove, 44 convex ring, 45 third external thread, 46 third internal thread, 51 first guide block, 52 second guide block, 53 first guide groove, 54 second guide groove, 131 fixing ring, 132 seat body, 133 conical hopper, 221 static eliminator, 222 electrode column, 223 ion needle. Specific embodiments
[0025] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.
[0026] Generally, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application.
[0027] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0030] Next, with reference to Figures 1-5 Describe an antistatic structure of a coffee grinding device according to some embodiments of the present application.
[0031] The present utility model provides an antistatic structure of a coffee grinding device through the following technical solutions, which includes an inner grinding wheel assembly 1, an outer grinding wheel assembly 2, and a driving device 3. The inner grinding wheel assembly 1 includes an inner grinding wheel 11 and an inner grinding wheel seat 12, and the inner grinding wheel 11 is installed inside the inner grinding wheel seat 12; the outer grinding wheel assembly 2 includes an outer grinding wheel 21 and an outer grinding wheel seat 22, and the outer grinding wheel 21 is installed inside the outer grinding wheel seat 22. In order to meet the installation and operation of the inner grinding wheel 11 and the outer grinding wheel 21, the inner grinding wheel seat 12 and the outer grinding wheel seat 22 adopt a hollow cylindrical structure. When grinding coffee beans, the inner grinding wheel assembly 1 is inserted into the outer grinding wheel assembly 2, so that the inner grinding wheel 11 and the outer grinding wheel 21 overlap and form a gap required for grinding. Subsequently, under the drive of the driving device 3, the outer grinding wheel 21 and the inner grinding wheel 11 rotate relative to each other, and the incoming coffee beans are ground into coffee powder. The ground coffee powder falls into the inner grinding wheel seat 12 below the inner grinding wheel 11.
[0032] In order to neutralize and eliminate the static electricity generated by the grinding device when grinding coffee beans, in the technical solution of this embodiment, a pulsed DC type static eliminator 221 is adopted. After the ion needle 223 extending into the inner grinding wheel seat 12 below the inner grinding wheel 11 is in contact connection with the electrode column 222 of the static eliminator 221, the positive and negative ions generated by the ion needle 223 neutralize the charges carried on the flowing coffee powder, thereby achieving the effect of eliminating static electricity.
[0033] Specifically, the static eliminator 221 is arranged on the outer side of the outer grinding wheel seat 22 to facilitate connecting to the power supply circuit of the grinding device; and a guiding structure is provided between the inner grinding wheel assembly 1 and the outer grinding wheel assembly 2, and the electrode column 222 of the static eliminator 221 and multiple groups of ion needles 223 adapted to the electrode column 222 are arranged in the guiding structure.
[0034] In the technical solution of this embodiment, the guiding structure includes first guiding blocks 51 circumferentially distributed on the inner wall of the outer grinding wheel base 22 and second guiding blocks 52 circumferentially distributed on the outer wall of the inner grinding wheel base 12. A first guiding groove 53 is formed between the first guiding blocks 51, and a second guiding groove 54 is formed between the second guiding blocks 52. The first guiding blocks 51 are adapted to the second guiding groove 54, and the second guiding blocks 52 are adapted to the first guiding groove 54. The electrode post 222 is disposed in one of the first guiding blocks 51 or the first guiding groove 53, and the ion needle 223 is disposed in the second guiding block 52 or the second guiding groove 54.
[0035] Specifically, the electrode post 222 penetrates through the outer grinding wheel base 22 and is disposed in the first guiding block 51, and the ion needle 223 penetrates through the inner grinding wheel base 12 and is disposed in the second guiding groove 54. The tip of the ion needle 223 penetrates and extends into the inner grinding wheel base 12, and the root of the ion needle 223 contacts the head of the electrode post 222 to achieve electrical connection. Since there are multiple groups of ion needles 223 and they are circumferentially and evenly distributed in the second guiding groove 54, when the inner grinding wheel assembly 1 is inserted into the outer grinding wheel assembly 2, the first guiding blocks 51 are moved into the second guiding groove 54 and the second guiding blocks 52 are moved into the first guiding groove 53, realizing the guiding insertion of the inner grinding wheel assembly 1 into the outer grinding wheel assembly 2. That is, when the first guiding blocks 51 are inserted into the second guiding groove 54, ion needles 223 adapted to the electrode post needles 222 are provided in the second guiding groove 54. Therefore, even if the inner grinding wheel assembly 1 is guided and inserted into the outer grinding wheel assembly 2 at multiple different angles, there are ion needles 223 that can contact and connect with the electrode post 222, and normal electrostatic elimination work is carried out in the inner grinding wheel base 12.
[0036] The ion needle 223 generally includes a group of ion needles that generate positive ions and negative ions. Therefore, at least two electrode posts 222 are required to cooperate with the ion needle 223. The electrode posts 222 can be respectively disposed on two adjacent first guiding blocks 51, or concentratedly disposed on the same first guiding block 51. The ion needles 223 are also correspondingly disposed in the second guiding groove 54 according to the setting of the electrode posts 222. In the embodiment, the electrode posts 222 are respectively disposed on two adjacent first guiding blocks 51. In addition, in order to improve the connection stability between the electrode post 222 and the ion needle 223 after multiple disassembly and assembly of the inner grinding wheel assembly 1 and the outer grinding wheel assembly 2, an elastic structure is provided in the electrode post 222, that is, an elastic element (not shown in the figure) is provided at the bottom of the electrode post 222, so that the head of the electrode post 222 can retract under pressure and pop out under the action of the elastic element after the pressure is eliminated. In this way, the effective contact between the head of the electrode post 222 and the bottom of the ion needle 223 can be maintained to achieve good electrical connection. Also, when the inner grinding wheel assembly 1 and the outer grinding wheel assembly 2 are disassembled and assembled multiple times, the electrode post 222 can retract in a timely manner to avoid damage to the head due to collision, improving the long-term effect of electrostatic elimination.
[0037] In the technical solution of this embodiment, the internal grinding wheel assembly 1 includes a base 13 and an adapter ring 14, and the base 13 includes a fixing ring 131 and a seat body 132. A first connection structure is provided between the internal grinding wheel assembly 1 and the external grinding wheel assembly 2, and the disassembly and connection of the internal grinding wheel assembly 1 and the external grinding wheel assembly 2 are realized through the first connection structure; a second connection structure and a third connection structure are also provided inside the internal grinding wheel assembly 1 to realize the connection of each part of the internal grinding wheel assembly 1.
[0038] Specifically, the first connection structure includes a first external thread 41 provided on the outer wall of the external grinding wheel seat 22 and a first internal thread 42 provided on the inner wall of the fixing ring 131. By connecting the first external thread 41 and the first internal thread 42, the threaded connection between the base 13 and the external grinding wheel seat 22 is realized.
[0039] The second connection structure includes an annular groove 43 provided on the outer wall of the internal grinding wheel seat 12 and a convex ring 44 provided on the inner wall of the adapter ring 14. The annular groove 43 and the convex ring 44 are connected to realize the connection between the adapter ring 14 and the internal grinding wheel seat 12.
[0040] The third connection structure includes a third external thread 45 provided on the outer wall of the adapter ring 14 and a third internal thread 46 provided on the inner wall of the fixing ring 131. The third external thread 45 and the third internal thread 46 are connected to realize the connection between the adapter ring 14 and the fixing ring 131.
[0041] In this way, through the second connection structure and the third connection structure, the base 13, the adapter ring 14 and the internal grinding wheel seat 12 are connected to each other to form the internal grinding wheel assembly 1, and then the internal grinding wheel assembly 1 inserted into the external grinding wheel assembly 2 through the first connection structure is connected to the external grinding wheel assembly 2, so as to realize the connection combination of the entire grinding device. Since the second connection structure is the annular groove 43 and the convex ring 44, when the base 13 is threadedly connected to the external grinding wheel seat 22, the rotation of the base 13 will not drive the internal grinding wheel seat 12 to rotate synchronously, so it will not affect the guiding structure between the internal grinding wheel assembly 1 and the external grinding wheel assembly 2, and then the normal grinding of the combined grinding device is realized. Disconnecting the above connection can disassemble and clean the grinding device, improving the cleaning and maintenance performance of the grinding device and further improving the quality of coffee brewing.
[0042] In order to avoid interference between the first connection structure and the third connection structure, the third internal thread 46 on the inner wall of the fixing ring 131 is located below the first internal thread 42.
[0043] In addition, a conical hopper 133 is further provided inside the base 13 for collecting and discharging the coffee powder flowing through the ion needle 223 in the internal grinding wheel seat 12.
[0044] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. An antistatic structure of a coffee grinding device, comprising an inner grinding wheel assembly, an outer grinding wheel assembly and a driving device, characterized in that: The outer grinding wheel assembly includes an outer grinding wheel and an outer grinding wheel seat. The outer grinding wheel is arranged in the outer grinding wheel seat, and the outer grinding wheel seat is further provided with an electrostatic eliminator; The inner grinding wheel assembly includes an inner grinding wheel and an inner grinding wheel seat. The inner grinding wheel is arranged in the inner grinding wheel seat, and the driving device drives the outer grinding wheel and the inner grinding wheel to rotate relatively to grind coffee beans; A first connection structure is provided between the inner grinding wheel assembly and the outer grinding wheel assembly to realize the disassembly and connection of the inner grinding wheel assembly and the outer grinding wheel assembly; A guiding structure is provided between the inner grinding wheel assembly and the outer grinding wheel assembly. The guiding structure is provided with electrode columns of the electrostatic eliminator and multiple groups of ion needles adapted to the electrode columns, so that when the inner grinding wheel assembly is connected to the outer grinding wheel assembly at multiple different angles, the ion needles are in contact connection with the electrode columns to eliminate the static electricity carried by the ground coffee powder.
2. The antistatic structure of a coffee bean grinding device according to claim 1, characterized in that, The guiding structure includes first guiding blocks circumferentially distributed on the inner wall of the outer grinding wheel seat and second guiding blocks circumferentially distributed on the outer wall of the inner grinding wheel seat. First guiding grooves are formed between the first guiding blocks, second guiding grooves are formed between the second guiding blocks, the first guiding blocks are adapted to the second guiding grooves, and the second guiding blocks are adapted to the first guiding grooves.
3. The antistatic structure of a coffee bean grinding device according to claim 2, characterized in that, The electrode columns are arranged in one of the first guiding blocks or the first guiding grooves, and the ion needles are arranged in the second guiding blocks or the second guiding grooves.
4. The antistatic structure of a coffee bean grinding device according to claim 3, characterized in that, The electrode columns are arranged in the first guiding blocks, and the ion needles are arranged in the second guiding grooves.
5. The antistatic structure of a coffee bean grinding device according to any one of claims 1-4, characterized in that, The electrostatic eliminator is arranged on the outside of the outer grinding wheel seat. The electrode columns penetrate through the outer grinding wheel seat, and an elastic structure is further arranged in the electrode columns to enable the electrode columns to retract or pop out under the action of pressure.
6. The antistatic structure of a coffee bean grinding device according to claim 1, characterized in that, The inner grinding wheel assembly further includes a base, and the base includes a fixing ring and a seat body. The first connection structure includes a first external thread arranged on the outer wall of the outer grinding wheel seat and a first internal thread arranged on the inner wall of the fixing ring. The first external thread is connected to the first internal thread to realize the connection between the base and the outer grinding wheel seat.
7. The antistatic structure of a coffee bean grinding device according to claim 6, characterized in that, The inner grinding wheel assembly further includes an adapter ring. A second connection structure is provided between the adapter ring and the inner grinding wheel seat. The adapter ring is connected to the inner grinding wheel seat through the second connection structure. A third connection structure is provided between the adapter ring and the base. The adapter ring is connected to the base through the third connection structure.
8. The antistatic structure of a coffee bean grinding device according to claim 7, characterized in that, The second connection structure includes an annular groove arranged on the outer wall of the inner grinding wheel seat and a convex ring arranged on the inner wall of the adapter ring. The convex ring is connected to the annular groove to realize the connection between the adapter ring and the inner grinding wheel seat.
9. The antistatic structure of a coffee bean grinding device according to claim 7, characterized in that, The third connection structure includes a third external thread arranged on the outer wall of the adapter ring and a third internal thread arranged on the inner wall of the fixing ring. The third internal thread is located below the first internal thread. The third external thread is connected to the third internal thread to realize the connection between the adapter ring and the fixing ring.
10. The antistatic structure of a coffee bean grinding device according to claim 9, characterized in that, A conical hopper is further provided inside the base for collecting and discharging the coffee powder flowing through the ion needles in the inner grinding wheel seat.