Bean feeding structure of bean grinder

Abstract

This utility model discloses a coffee grinder bean feeding structure, including a bean hopper (1) with a bean storage chamber (10) having an opening at the top and a bean discharge port (11) on the side. The invention is characterized by further including a bean wheel (2) housed at the bottom of the bean storage chamber (10). The bean wheel (2) includes a disc (21) rotatably connected to the bean hopper (1) and multiple blades (22) spaced circumferentially around the outer periphery of the disc (21). Adjacent blades (22) surround the disc (21) and the bean hopper (1) to form a bean discharge area (20). A drive assembly (3) is also included to drive the bean wheel (2) to rotate, thereby moving the coffee beans in the discharge area (20) to the discharge port (11) for discharge. Compared with the prior art, this utility model can control the bean feeding speed and prevent coffee beans from breaking.

Description

Technical Field

[0001] This utility model relates to the field of coffee grinder technology, specifically to a coffee grinder bean feeding structure. Background Technology

[0002] A coffee grinder is a tool that grinds coffee beans into coffee powder by cutting and grinding them into coffee grounds when a motor drives mechanical blades to rotate at high speed. A common problem with existing coffee grinders is that after the desired amount of coffee is ground and the grinder stops, a large amount of residual beans and powder remains in the grinding zone. This means that a portion of the coffee must be ground before any fresh coffee powder can be produced for the next use.

[0003] To address this, Chinese patent application number CN202322374391.0, entitled "A Coffee Grinder with Dual-Channel Feeding," controls the amount of coffee beans fed from the bean box assembly to the grinding box by controlling the rotation of the screw, so that the amount of coffee beans output per unit time is more consistent, which helps to improve the controllability of the amount of coffee beans fed.

[0004] However, in the above solution, the screw will damage the coffee beans and cause them to break during the feeding process. When the feeding stops, a large number of broken coffee beans will remain at the screw and cannot be isolated from the outside environment, which will cause the broken coffee beans to lose their original flavor. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a coffee grinder feeding structure that can control the coffee bean feeding speed and prevent coffee beans from breaking, in light of the current state of the technology.

[0006] The second technical problem to be solved by this utility model is to provide a coffee grinder feeding structure that can close the coffee discharge port when the coffee feed stops.

[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: a bean feed structure for a coffee grinder, including a bean hopper, the interior of which has a bean storage cavity with a top opening, and a bean discharge port on the side of the bean hopper communicating with the bean storage cavity, characterized in that: it also includes...

[0008] A bean reel, housed at the bottom of the bean storage chamber, includes a reel rotatably connected to the bean hopper and multiple blades spaced circumferentially around the outer periphery of the reel. Adjacent blades, the reel, and the bean hopper surround a bean discharge area.

[0009] A drive assembly is used to drive the bean spool to rotate around the axis of the spool, thereby pushing the coffee beans in the bean discharge area to be discharged from the bean discharge port.

[0010] To solve the second technical problem mentioned above, each blade has a sealing surface at its end. When the drive assembly is not working, the bean reel is in a sealing position, which means that the sealing surface of one of the blades covers the bean discharge port.

[0011] In order to monitor whether the bean reel has rotated to the sealing position, a position monitoring component is also included to monitor whether the bean reel has rotated to the sealing position.

[0012] To simplify the location monitoring component, the location monitoring component includes:

[0013] A magnet, mounted on one of the blades described; and

[0014] A Hall effect sensor is installed on the bean hopper to sense changes in the magnetic field of the magnet.

[0015] When the bean reel rotates to the sealing position, the magnet is within the sensing range of the Hall effect sensor.

[0016] In order to shut off the drive unit in time after the bean feeding is completed so that the bean wheel is kept in the sealed position, the bean feeding structure of the grinder has a controller. The position monitoring component and the drive component are both electrically connected to the controller so that the controller can receive the signal collected by the position monitoring component and control the opening and closing of the drive component.

[0017] To facilitate the insertion of coffee beans, the bean storage chamber includes a first chamber and a second chamber that are connected vertically. The diameter of the first chamber gradually increases from bottom to top, and the bean wheel is housed in the second chamber.

[0018] To avoid interference between the blades and the bean hopper during rotation and to ensure the independence of each bean row area, the second chamber is cylindrical, and the sealing surface is arc-shaped and arranged close to the peripheral wall of the second chamber.

[0019] To ensure smooth bean discharge, each blade is gradually and smoothly curved from the inside out along the rotation direction of the bean wheel.

[0020] To drive the bean reel to rotate and facilitate speed adjustment, the drive assembly includes:

[0021] The base is installed at the bottom of the bean bin and forms a sandwich between the base and the bean bin. The wheel is rotatably connected to the bottom wall of the bean bin via a rotating shaft, and the bottom end of the rotating shaft extends into the sandwich.

[0022] The driven gear is located within the interlayer and coaxially connected to the rotating shaft;

[0023] The driving gear, located within the interlayer, meshes with the driven gear; and

[0024] The drive unit is installed at the bottom of the base, and its power output shaft extends into the interlayer and is coaxially connected to the drive gear.

[0025] Compared with the prior art, the advantages of this utility model are:

[0026] (1) By rotatably installing the bean wheel, which consists of a wheel and multiple blades, at the bottom of the bean storage chamber, the bean discharge area is formed by the encirclement of two adjacent blades, the wheel, and the bean bin. Under the drive of the drive assembly, the bean wheel can rotate around the axis of the wheel, thereby pushing the coffee beans in the discharge area to the discharge port for discharge. On the one hand, the bean feeding speed can be adjusted by adjusting the rotation speed of the drive source in the drive assembly. On the other hand, the coffee beans can be prevented from being broken by the bean wheel.

[0027] (2) By setting a sealing surface at the end of each blade, when the drive assembly is not working, the sealing surface of one of the blades covers the bean discharge port. It can be seen that the bean wheel can close the bean discharge port when the bean feeding stops, thus preventing the coffee beans in the bean hopper from losing their original flavor. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of an embodiment of the bean feeding structure of the coffee grinder of this utility model in the state where the drive component is not working;

[0029] Figure 2 for Figure 1 A three-dimensional exploded view;

[0030] Figure 3 for Figure 1 A longitudinal sectional view;

[0031] Figure 4 for Figure 1 A cross-sectional view. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0034] like Figures 1 to 4 The image shows a preferred embodiment of the coffee grinder's bean feeding structure of this utility model. The coffee grinder's bean feeding structure includes a bean hopper 1, a bean wheel 2, a drive assembly 3, and a position monitoring assembly 4.

[0035] The bean hopper 1 has a bean storage chamber 10 with a top opening. This chamber 10 includes a first chamber 101 and a second chamber 102 that are interconnected vertically. The diameter of the first chamber 101 gradually increases from bottom to top, facilitating the insertion of coffee beans. A bean discharge port 11, communicating with the second chamber 102, is located on the side of the bean hopper 1. In this embodiment, the main body of the first chamber 101, excluding the top and bottom, is in the shape of an inverted frustum, while the second chamber 102 is cylindrical. Additionally, a top cover can be provided to cover the top opening of the bean storage chamber 10.

[0036] The bean wheel 2 is housed in the second chamber 102 and includes a wheel 21 and blades 22.

[0037] Specifically, the wheel 21 is rotatably connected to the bottom wall of the bean hopper 1 via a rotating shaft 211, and the bottom end of the rotating shaft 211 extends into the interlayer 310 described below.

[0038] There are four blades 22, which are arranged circumferentially around the outer periphery of the wheel 21. The adjacent two blades 22 surround the wheel 21 and the bean bin 1 to form a bean discharge area 20. Each blade 22 gradually bends smoothly from the inside to the outside along the rotation direction of the bean wheel 2, and the thickness of the blade 22 gradually increases from the inside to the outside. The end of each blade 22 has an arc-shaped sealing surface 221, which is arranged in close contact with the peripheral wall of the second chamber 102.

[0039] The drive assembly 3 includes a base 31, a driven gear 32, a driving gear 33, and a drive component 34, which is the drive source in the drive assembly 3.

[0040] Specifically, the base 31 is installed at the bottom of the bean hopper 1, and a sandwich 310 is formed between the base 31 and the bean hopper 1;

[0041] Driven gear 32 is located inside interlayer 310 and is coaxially connected to rotating shaft 211;

[0042] The driving gear 33 is located within the interlayer 310 and meshes with the driven gear 32;

[0043] The drive unit 34 is a motor, which is installed at the bottom of the base 31. Its power output shaft extends into the interlayer 310 and is coaxially connected to the drive gear 33.

[0044] Start the drive unit 34 to drive the drive gear 33 to rotate. Since the drive gear 33 meshes with the driven gear 32, the driven gear 32 drives the bean wheel 2 to rotate around the axis of the wheel 21 through the rotating shaft 211, thereby pushing the coffee beans in the bean discharge area 20 to be discharged from the bean discharge port 11.

[0045] In this embodiment, as Figure 4 As shown, when the drive assembly 3 is not working, the bean roller 2 is in the sealing position, which means that the sealing surface 221 of one of the blades 22 covers the bean discharge port 11.

[0046] The position monitoring component 4 is used to monitor whether the bean reel 2 has rotated to the sealing position, and includes a magnet 41 and a Hall sensor 42. Specifically, the magnet 41 is embedded on one of the blades 22; the Hall sensor 42 is installed on the outside of the bean hopper 1 to sense changes in the magnetic field of the magnet 41; when the bean reel 2 rotates to the sealing position, the magnet 41 is within the sensing range of the Hall sensor 42.

[0047] In addition, the above-mentioned coffee grinder feeding structure has a controller. The Hall sensor 42 in the position monitoring component 4 and the drive component 34 in the drive component 3 are both electrically connected to the controller so that the controller can receive the signal collected by the Hall sensor 42 and control the opening and closing of the drive component 34.

[0048] This utility model also provides a control method for the above-mentioned coffee grinder bean feeding structure, including the following steps:

[0049] When the grinder needs to feed coffee beans, the drive unit 34 is activated to drive the bean wheel 2 to rotate forward, which pushes the coffee beans in the bean discharge area 20 to the bean discharge port 11 for discharge. During this process, the feeding speed is adjusted by adjusting the rotation speed of the drive unit 34.

[0050] When the amount of beans fed reaches Q1, the rotation speed of the drive unit 34 is reduced to reduce the bean feeding speed, so as to achieve precise control of the amount of beans fed.

[0051] When the bean feed reaches Q2 and the position monitoring component 4 detects that the bean roller 2 has rotated to the sealing position, the drive component 34 is turned off to keep the bean roller 2 in the sealing position (e.g., Figure 4 (as shown);

[0052] When the current of the drive component 34 exceeds the set current value, it indicates that the bean jamming phenomenon has occurred. The problem can be solved by starting the drive component 34 to drive the bean wheel 2 to rotate in reverse for 2 seconds and then resuming the forward rotation of the bean wheel 2.

[0053] Q1 and Q2 are preset values, and Q1 < Q2 and Q1 and Q2 are similar.

Claims

1. A bean feeding structure of a bean grinder, comprising a bean bin (1) having a bean storage cavity (10) with a top opening in the interior of the bean bin (1), and a bean discharging port (11) in the side of the bean bin (1) and communicating with the bean storage cavity (10), characterized in that: It also includes A bean wheel (2) is housed at the bottom of the bean storage chamber (10). The bean wheel (2) includes a wheel (21) rotatably connected to the bean bin (1) and multiple blades (22) spaced circumferentially around the outer periphery of the wheel (21). A bean discharge area (20) is formed between two adjacent blades (22), the wheel (21), and the bean bin (1). The drive assembly (3) is used to drive the bean wheel (2) to rotate around the axis of the wheel (21), thereby pushing the coffee beans in the bean discharge area (20) to be discharged from the bean discharge port (11).

2. Bean feeding structure for a bean grinder according to claim 1, characterized in that: Each blade (22) has a sealing surface (221) at its end. When the drive assembly (3) is not in operation, the bean wheel (2) is in a sealed position. The sealed position means that the sealing surface (221) of one of the blades (22) covers the bean discharge port (11).

3. A bean feed structure for a bean grinder as claimed in claim 2, wherein: It also includes a position monitoring component (4) for monitoring whether the bean reel (2) has rotated to the sealing position.

4. A bean feed structure for a bean grinder as claimed in claim 3, characterized in that: The location monitoring component (4) includes: A magnet (41) is mounted on one of the blades (22); and A Hall effect sensor (42) is installed on the bean hopper (1) to sense changes in the magnetic field of the magnet (41); When the bean reel (2) rotates to the sealing position, the magnet (41) is within the sensing range of the Hall sensor (42).

5. The bean feeding structure of the bean grinder according to claim 3, characterized in that: The bean feed structure of the grinder has a controller. The position monitoring component (4) and the drive component (3) are both electrically connected to the controller so that the controller can receive the signal collected by the position monitoring component (4) and control the opening and closing of the drive component (3).

6. The bean feeding structure of the bean grinder according to claim 2, characterized in that: The bean storage chamber (10) includes a first chamber (101) and a second chamber (102) that are connected to each other. The diameter of the first chamber (101) gradually increases from bottom to top, at least locally. The bean reel (2) is housed in the second chamber (102).

7. A bean feed structure for a bean grinder as claimed in claim 6, characterised in that: The second chamber (102) is cylindrical, and the sealing surface (221) is arc-shaped and is arranged close to the peripheral wall of the second chamber (102).

8. The bean feeding structure of the bean grinder according to claim 2, characterized in that: Each blade (22) is gradually and smoothly curved from the inside out along the rotation direction of the bean reel (2).

9. A bean feed arrangement for a bean grinder as claimed in any one of claims 2 to 8, wherein: The drive component (3) includes: The base (31) is installed at the bottom of the bean bin (1) and forms a sandwich (310) between it and the bean bin (1). The wheel (21) is rotatably connected to the bottom wall of the bean bin (1) via a rotating shaft (211), and the bottom end of the rotating shaft (211) extends into the sandwich (310). Driven gear (32) is located in the interlayer (310) and coaxially connected to the rotating shaft (211); The driving gear (33) is located in the interlayer (310) and meshes with the driven gear (32); as well as The drive unit (34) is installed at the bottom of the base (31), and its power output shaft extends into the interlayer (310) and is coaxially connected to the drive gear (33).

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