Bean grinder

Abstract

The application provides a coffee grinder, which comprises a base and a machine body arranged on the base, a main control panel connected with a ground wire is arranged in the base; a grinding bin is arranged in the machine body, an installation end surface for assembling an end cover to seal the grinding bin is arranged on the machine body and located at the circumferential side of the grinding bin; a bean inlet and a powder outlet are arranged on the machine body and communicate with the grinding bin; a powder receiving position for placing a powder receiving cup is arranged on the base and opposite to the powder outlet; a conductive ring is arranged on the installation end surface, and a contact piece for contacting the conductive ring is arranged on the end cover; and / or a contact point is arranged on the powder receiving position, and the powder receiving cup is made of a metal material; the contact point and the conductive ring are electrically connected with the ground wire in the main control panel. The coffee grinder provided by the application can eliminate static electricity to avoid the problem of powder residue.

Description

Technical Field

[0001] This application belongs to the field of small household appliance technology, and more specifically, relates to a coffee grinder. Background Technology

[0002] During the grinding process of a coffee grinder, static electricity is inevitably generated. This static electricity causes the ground coffee powder to adhere to the grinder chamber, resulting in excessive residual powder. Static electricity also causes powder to adhere to the grinder's outlet or container, making cleaning the grinder components more difficult. To address this issue, plasma ionization is commonly used. While effective at eliminating static electricity, the plasma generation process also produces a small amount of ozone. Ozone within the enclosed space of the grinder chamber can negatively impact the flavor of the coffee powder. Utility Model Content

[0003] The purpose of this application is to provide a coffee grinder to solve the technical problem of powder adsorption residue caused by static electricity in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application embodiment is to provide a coffee grinder, which includes:

[0005] A base and a body mounted on the base, wherein a main control board connected to a ground wire is disposed in the base;

[0006] The machine body is provided with a grinding chamber, and the machine body is provided with an installation end face on the periphery of the grinding chamber for assembling an end cap to seal the grinding chamber; the machine body is provided with a bean inlet and a powder outlet that are connected to the grinding chamber.

[0007] A powder receiving position for placing a powder receiving cup is provided on the base directly opposite the powder outlet;

[0008] The device includes a conductive ring on the mounting end face and a contact piece on the end cover for contacting the conductive ring; and / or a contact point on the powder receiving position, wherein the powder receiving cup is made of metal; the contact point and the conductive ring are electrically connected to the ground wire in the main control board.

[0009] Optionally, the grinding plane in the grinding chamber is arranged vertically, and the powder outlet is located at the bottom of the grinding chamber.

[0010] Optionally, each of the contact pieces is provided with a plurality of corresponding contacts on the end cap.

[0011] Optionally, a feeding channel is provided in the machine body along the horizontal direction, the end of the feeding channel is connected to the grinding chamber, and the bean inlet is provided vertically and is connected to the end of the feeding channel away from the grinding chamber.

[0012] Optionally, a slot is provided on the mounting end face along its circumference, and a block is provided on the end cover along its end face circumference; in a first position, the block is directly opposite the insertion position of the slot, and in a second position, the block is locked in the slot to connect the end cover and the mounting end face.

[0013] Optionally, a magnetic induction module electrically connected to the main control board is provided inside the mounting end face, and a first permanent magnet is embedded on the end face of the end cover; in the second position, the first permanent magnet is directly opposite the magnetic induction module.

[0014] Optionally, an infrared detector electrically connected to the main control board is provided on the base, directly below the powder receiving position.

[0015] Optionally, a push-button switch electrically connected to the main control board is provided on the base, directly below the powder receiving position.

[0016] The coffee grinder provided in this application embodiment has at least the following beneficial effects:

[0017] By setting up contacts that are electrically connected to the main control board connected to the ground wire, static electricity generated on the machine during the coffee grinding process can be transmitted to the main control board through the contacts and conducted to the ground through the ground wire, thereby eliminating static electricity on the machine. When the coffee is finished grinding and the powder is dispensed, the powder in the grinding chamber can be dispensed as cleanly as possible, and there will not be too much residual powder on the powder outlet and / or the powder receiving cup, which is conducive to cleaning the coffee grinder set. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a coffee grinder in some embodiments of this application;

[0020] Figures 2 to 4 Exploded views of the coffee grinder in some embodiments of this application;

[0021] Figure 5 This is a perspective cross-sectional view of a coffee grinder in some embodiments of this application. Detailed Implementation

[0022] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0023] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0024] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0025] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0028] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0029] Please refer to the following: Figures 1 to 5 The coffee grinder provided in the embodiments of this application will now be described.

[0030] Understandably, reference Figure 1 The coffee grinder provided in this application includes a base 10 and a body 20 disposed on the base 10, wherein a main control board (not shown in the figure) connected to the ground wire is disposed in the base 10.

[0031] refer to Figure 5 The machine body 20 is provided with a grinding chamber a. Specifically, the machine body 20 is provided with an installation end face on the periphery of the grinding chamber a for mounting an end cover 30 to seal the grinding chamber a. The end cover 30 is detachably mounted on the end face. After grinding and discharging the powder, the end cover 30 can be removed to clean the grinding chamber a.

[0032] refer to Figure 5The machine body 20 is provided with a bean inlet b and a powder outlet c that are connected to the grinding chamber a. The grinding chamber a is provided with a moving blade 410 and a fixed blade 420. A grinding plane is formed between the moving blade 410 and the fixed blade 420. It should be understood that the grinding plane refers to the virtual plane formed by the cutting surfaces of the moving blade 410 and the fixed blade 420. The moving blade 410 is driven by a motor to rotate relative to the fixed blade 420, thereby realizing the grinding of coffee beans in the grinding plane.

[0033] refer to Figure 5 A powder receiving position e is provided on the base 10 directly opposite the powder outlet c for placing the powder receiving cup 40. During grinding, the powder receiving cup 40 is placed on the powder receiving position e to collect the powder from the powder outlet c.

[0034] refer to Figure 2 In some embodiments, a conductive ring 210 is provided on the mounting end face, and a contact piece 310 for contacting the conductive ring 210 is provided on the end cap 30. It is understood that both the end cap 30 and the conductive ring 210 are made of metal materials, such as stainless steel or aluminum alloy.

[0035] refer to Figures 2 to 5 In other embodiments, a contact 240 is provided on the powder receiving position e, and the powder receiving cup 40 is made of metal.

[0036] It should be understood that in the aforementioned embodiments, both contact 240 and conductive ring 210 are electrically connected to the ground wire in the main control board. Thus, after end cap 30 contacts conductive ring 210, or after powder cup 40 contacts contact 240, end cap 30 or powder cup 40 can directly conduct the charge accumulated on it to the ground, thereby preventing the accumulation of charge on end cap 30 or powder cup 40 to form static electricity.

[0037] Through the settings of the above embodiments, during the coffee grinding process, the static electricity generated on the machine body 20 can be transmitted to the main control board and conducted to the ground through the ground wire, thereby eliminating the static electricity on the machine body 20. When the grinding is completed and the powder is dispensed, the powder in the grinding chamber a can be dispensed as cleanly as possible, and there will not be too much residual powder on the powder outlet c and / or the powder receiving cup 40. This is beneficial for cleaning the coffee grinder set, and the flavor of the ground powder will not be affected by the presence of ozone, thus contributing to the stability of the quality of the ground powder.

[0038] refer to Figure 5In some embodiments, the grinding plane in the grinding chamber a is arranged vertically, that is, the radial directions of both the moving blade 410 and the fixed blade 420 are parallel to the vertical direction, and the powder outlet c is located at the bottom of the grinding chamber a. Because the grinding plane is arranged vertically, during the coffee bean grinding process, the coffee beans rotate at high speed along the vertical plane under the drive of the moving blade 410. During rotation, they are ground into powder by both the moving blade 410 and the fixed blade 420. Under the action of centrifugal force, the ground powder is thrown out along the circumferential tangential direction from the grinding gap between the moving blade 410 and the fixed blade 420 and hits the side wall of the grinding chamber a, and finally falls to the powder outlet c at the bottom of the grinding chamber a under the action of gravity. Thus, the powder falling path in the grinding chamber a is vertical, and the falling powder is achieved by gravity, effectively reducing the amount of residual powder in the grinding chamber a, which is beneficial for powder cleaning.

[0039] refer to Figure 3 and Figure 4 In some embodiments, a plurality of contact pieces 310 are correspondingly provided on the end cover 30. It can be understood that the contact piece 310 can be an arc-shaped spring piece provided on the end cover 30, with the radial direction of the arc perpendicular to the mounting end face. During the assembly process of the end cover 30, each contact piece 310 is deformed by pressure, thereby increasing the contact area with the conductive ring 210, so that it can stably contact the conductive ring 210 to ensure the stable conduction of the conductive circuit.

[0040] refer to Figure 5 In some embodiments, a feeding channel d is provided laterally in the machine body 20, with its end connected to the grinding chamber a. The bean inlet b is vertically positioned and connected to the end of the feeding channel d furthest from the grinding chamber a. Specifically, the aforementioned motor shaft passes through the feeding channel d, and a feeding screw is fitted around the outside of the shaft within the feeding channel d. By configuring the feeding channel d in this way, coffee beans entering from the bean inlet b can be temporarily stored within the feeding channel d for orderly feeding, thereby ensuring thorough grinding and guaranteeing grinding quality.

[0041] refer to Figures 2 to 4 In some embodiments, the end cap 30 is fixed to the mounting end face by a snap-fit ​​connection. Specifically, a slot 220 is provided on the mounting end face along its circumference, and a locking block 320 is provided on the end cap 30 along its end face circumference. In a first position, the locking block 320 and the slot 220 are directly opposite each other so that the end cap 30 can be connected to the mounting end face. In a second position, the locking block 320 is locked in the slot 220 to fix the end cap 30 and the mounting end face, thereby sealing the grinding chamber a.

[0042] Further reference Figure 4A magnetic induction module 230, electrically connected to the main control board, is installed inside the mounting end face. A first permanent magnet 330 is embedded in the end face of the end cover 30. In the second position, the first permanent magnet 330 and the magnetic induction module 230 are directly opposite each other. This second position indicates that the end cover 30 is properly assembled and fixed. When the magnetic induction module 230 senses the second permanent magnet, it sends a data signal to the main control board, which then uses this signal as a pre-start signal for the motor. Similarly, if the motor is still running and the main control board does not receive the data signal from the second permanent magnet sent by the magnetic induction module 230, it means that the end cover 30 has been disassembled or is not properly locked, and the main control board can immediately stop the motor. This ensures the safety of the coffee grinder's operation and avoids potential accidents caused by the end cover 30 not being properly locked.

[0043] It is understandable that during the coffee bean grinding process, the powder that can pass through the grinding gap is thrown out by the centrifugal force of the burr and falls directly into the ground. In other words, powder will fall as soon as the motor starts. At this time, if the powder cup 40 is not placed in place, powder is likely to spill.

[0044] Therefore, in some embodiments, an infrared detector (not shown in the figure) electrically connected to the main control board is provided on the base 10, directly below the powder receiving position e. By providing the infrared detector, when the powder receiving cup 40 is placed on the powder receiving position e, the infrared detector detects the powder receiving cup 40 and sends a data signal to the main control board. The main control board then uses this signal as a pre-signal to control the motor to start. By using an infrared detector to detect whether the powder receiving cup 40 is placed correctly, the problem of powder spillage caused by improper placement of the powder receiving cup 40 can be avoided.

[0045] Or, refer to Figures 2 to 4 In other embodiments, a push-button switch 250 electrically connected to the main control board is provided on the base 10, directly below the powder receiving position e. Similarly, when the push-button switch 250 is pressed by the powder receiving cup 40, it sends a switch data signal to the main control board, which then uses this signal as a pre-signal to control the motor to start.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bean grinder, characterized by include: A base and a body mounted on the base, wherein a main control board connected to a ground wire is disposed in the base; The machine body is provided with a grinding chamber, and the machine body is provided with an installation end face on the periphery of the grinding chamber for assembling an end cap to seal the grinding chamber; the machine body is provided with a bean inlet and a powder outlet that are connected to the grinding chamber. A powder receiving position for placing a powder receiving cup is provided on the base directly opposite the powder outlet; The device includes a conductive ring on the mounting end face and a contact piece on the end cover for contacting the conductive ring; and / or a contact point on the powder receiving position, wherein the powder receiving cup is made of metal; the contact point and the conductive ring are electrically connected to the ground wire in the main control board.

2. The bean grinder according to claim 1, characterized in that: The grinding plane in the grinding chamber is arranged vertically, and the powder outlet is located at the bottom of the grinding chamber.

3. The bean grinder according to claim 1, characterized in that: Each of the aforementioned contact pieces is provided with a number of corresponding contacts on the end cap.

4. The bean grinder according to claim 2, characterized in that: A feeding channel is provided horizontally in the machine body. The end of the feeding channel is connected to the grinding chamber. The bean inlet is provided vertically and is connected to the end of the feeding channel away from the grinding chamber.

5. A bean grinder as claimed in any one of claims 1 to 4, characterized in that: A slot is provided circumferentially on the mounting end face, and a block is provided circumferentially on the end cover. In a first position, the block is directly opposite the insertion position of the slot. In a second position, the block is locked in the slot to connect the end cover and the mounting end face.

6. The bean grinder according to claim 5, characterized in that: A magnetic induction module electrically connected to the main control board is disposed inside the mounting end face, and a first permanent magnet is embedded on the end face of the end cover; in the second position, the first permanent magnet is directly opposite the magnetic induction module.

7. A bean grinder as claimed in any one of claims 1 to 4, characterized in that: An infrared detector electrically connected to the main control board is installed on the base, directly below the powder receiving position.

8. A bean grinder as claimed in any one of claims 1 to 4, characterized in that: A push-button switch electrically connected to the main control board is provided on the base, directly below the powder receiving position.

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