Bean grinder capable of accurately quantifying coffee powder

Abstract

The utility model discloses a bean grinder capable of accurately quantifying coffee powder, which comprises a shell and a powder outlet assembly, and further comprises a quantitative weighing assembly, the quantitative weighing assembly comprises a power panel, a control panel, an AD conversion panel and a weight sensor, and the power panel, the control panel, the AD conversion panel and the weight sensor are all arranged in the shell. The motor, the control board and the AD conversion board are electrically connected with the power panel, the weight sensor is electrically connected with the AD conversion board, an MCU module is integrated on the power panel, a support is arranged on the weight sensor, a detachable powder receiving cup is arranged on the support, and the powder receiving cup is located below the powder outlet assembly. The weight sensor is used for detecting the weight of coffee powder in the powder receiving cup, when the weight reaches a preset value, the motor stops working, the weight of the coffee powder is displayed, when the weight is within an allowable error range, grinding is finished, and therefore the quantitative accuracy of the coffee powder can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee bean grinders, in particular to a coffee bean grinder for accurately quantitatively producing coffee powder. Background Art

[0002] A coffee bean grinder is a commonly used device for grinding coffee beans into coffee powder. It mainly grinds coffee beans into coffee powder through the relative rotation between two internal blade discs.

[0003] At present, there are generally several quantitative methods for quantitative powder grinding machines on the consumer market:

[0004] 1. Volumetric dosing: A doser is used to divide the volume space into different intervals to control the amount of powder output. Each small grid is the smallest unit of powder output. Each time the doser is turned, one grid of powder is output. The required amount of powder output is a multiple of the smallest unit of measurement. It cannot meet the requirements of non-integer multiples of powder output. In addition, due to the coarseness of the ground powder, the average density of the same volume of coffee powder is inconsistent, resulting in a large error.

[0005] 2. Timing and quantitative measurement: quantitative measurement is achieved through precise timing. Generally, the positioning accuracy can reach at least 0.1 second. However, due to various reasons, the powder output has always been in doubt. Utility Model Content

[0006] The utility model aims to solve at least one problem existing in the prior art. To this end, the purpose of the utility model is to provide a coffee bean grinder for accurately quantitatively measuring coffee powder.

[0007] To achieve the above purpose, the technical solution of the utility model is:

[0008] A coffee bean grinder for accurately quantitatively measuring coffee powder comprises a shell and a powder outlet assembly, wherein a grinding chamber is arranged at the top of the shell, a motor is arranged inside the shell, a knife disc is mounted on the output shaft of the motor, the knife disc is located in the grinding chamber, the powder outlet assembly is connected to the grinding chamber, and also comprises a quantitative weighing assembly, the quantitative weighing assembly comprises a power board, a control board, an AD conversion board and a weight sensor, the power board, the control board, the AD conversion board and the weight sensor are all arranged in the shell, the motor, the control board, the AD conversion board are electrically connected to the power board, the weight sensor is electrically connected to the AD conversion board, an MCU module is integrated on the power board, a support is arranged on the weight sensor, a detachable powder receiving cup is arranged on the support, and the powder receiving cup is located below the powder outlet assembly.

[0009] Further on the basis of the above scheme, an opening is provided on one side of the shell, the weight sensor is installed in the opening of the shell, one end of the weight sensor is located inside the shell, and the other end is located outside the shell, and the support is located outside the shell.

[0010] Further on the basis of the above solution, a weight sensor bracket is arranged inside the shell, and the weight sensor is arranged on the weight sensor bracket.

[0011] Further on the basis of the above scheme, the powder outlet assembly includes a connecting pipe and a powder outlet pipe, the connecting pipe is connected to the outside of the grinding chamber and communicated with the grinding chamber, and the powder outlet pipe is detachably connected to the connecting pipe.

[0012] Further on the basis of the above solution, at least one lock buckle is provided on the outer wall of the connecting pipe, and at least one lock groove is provided on the powder outlet pipe, and the lock groove is used in conjunction with the lock buckle.

[0013] Further on the basis of the above solution, the locking groove is an L-shaped structure.

[0014] Further on the basis of the above solution, a limiting plate is arranged above the support, and a limiting member is arranged on the limiting plate.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model detects the weight of the coffee powder in the powder receiving cup by means of a weight sensor. When the weight reaches a predetermined value, the motor stops working and displays the weight of the coffee powder. When the weight is within the allowable error, the grinding ends, which can improve the accuracy of the quantitative measurement of the coffee powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the coffee bean grinder of the utility model;

[0018] Figure 2 It is a cross-sectional view of the coffee bean grinder of the utility model;

[0019] Figure 3 This is a structural diagram of the powder discharging component of the coffee bean grinder of the utility model;

[0020] Figure 4 It is the circuit diagram of the utility model;

[0021] Figure 5 It is a work flow chart of the utility model.

[0022] In the figure: 1. shell, 101. grinding chamber, 102. motor, 103. knife disc, 2. powder outlet assembly, 21. connecting pipe, 211. lock buckle, 22. powder outlet pipe, 221. lock slot, 3. power board, 301. MCU module, 4. control board, 5. AD conversion board, 6. weight sensor, 7. support, 8. powder receiving cup, 9. weight sensor bracket, 10. limit plate, 1001. limit piece. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0024] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the utility model belongs. The words "one" or "one" and the like used in the specification and claims of this application do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" includes two, which is equivalent to at least two. "Including" or "including" and the like mean that the elements or objects appearing in front of "including" or "including" include the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms of "one", "said" and "the" used in the specification and the appended claims of this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] Please refer to Figure 1 and 2 A coffee bean grinder for accurately quantitatively measuring coffee powder comprises a shell 1, a grinding chamber 101 is arranged on the top of the shell 1, a motor 102 is arranged inside the shell 1, a knife disc 103 is installed on the output shaft of the motor 102, an upper knife disc 103 is arranged above the lower knife disc 103 inside the shell 1, the knife disc 103 is located in the grinding chamber 101, and the motor 102 drives the (lower) knife disc 103 to rotate when it works, thereby grinding the coffee beans.

[0026] Please refer to Figure 1 and 2A coffee bean grinder for accurately quantitatively measuring coffee powder also includes a powder outlet assembly 2, which is connected to the grinding chamber 101. The powder outlet assembly 2 includes a connecting pipe 21 and a powder outlet pipe 22. A connecting plate is provided on one side of the connecting pipe 21, and a plurality of through holes are provided on the connecting plate. Screw holes corresponding to the through holes are provided on the shell 1 (grinding chamber 101), and screws can be assembled in the through holes and the screw holes, that is, the connecting pipe 21 is fixedly connected to the outside of the grinding chamber 101 by bolts and is connected to the grinding chamber 101, and the powder outlet pipe 22 is detachably connected to the connecting pipe 21, and the coffee powder ground by the knife disc 103 will enter the powder outlet assembly 2 and be discharged through the powder outlet assembly 2.

[0027] Please refer to Figure 3 Furthermore, the outer diameter of the connecting pipe 21 is smaller than the inner diameter of the powder outlet pipe 22, that is, the powder outlet pipe 22 is sleeved on the outside of the connecting pipe 21, and two opposite lock buckles 211 are provided on the outer wall of the connecting pipe 21, and two opposite lock grooves 221 are provided on the powder outlet pipe 22. The lock groove 221 is an L-shaped structure, and the lock groove 221 is used in conjunction with the lock buckle 211, that is, the powder outlet pipe 22 is locked on the connecting pipe 21 by a screw-on connection. This connection method facilitates the disassembly and cleaning of the powder outlet pipe 22.

[0028] Please refer to Figure 2 and 4 A coffee bean grinder for accurate quantitative coffee powder also includes a quantitative weighing component, which includes a power board 3, a control board 4, an AD conversion board 5 and a weight sensor 6. The power board 3, the control board 4, the AD conversion board 5 and the weight sensor 6 are all arranged in a housing 1. The motor 102, the control board 4, the AD conversion board 5 are electrically connected to the power board 3, and the weight sensor 6 is electrically connected to the AD conversion board 5. The power board 3 is integrated with an MCU module 301. The weight sensor 6 collects weight sensing values ​​and transmits the collected data to the AD conversion board 5. The AD conversion board 5 simulates the weight digitization. The MCU module 301 calculates the collected weight data for controlling the start and stop of the motor 102. The motor 102 is used to start and stop the real-time grinding action of the execution instruction. The control board 4 includes a touch screen to realize the setting of the grinding weight value, the start of the grinding function and the setting of the calibration function.

[0029] In this embodiment, the weight sensor 6 adopts a sensor with a maximum measuring range of 5 kg.

[0030] In this embodiment, the installation positions of the control board 4 and the AD conversion board 5 can be changed according to the arrangement of the position of the whole machine.

[0031] A coffee bean grinder for accurately measuring coffee powder also includes components such as a power supply and a power interface, which are indispensable for electrical appliances and are also prior art, so no further elaboration will be made in this application.

[0032] Please refer to Figure 2 and 3 Furthermore, a support 7 is fixed on the weight sensor 6 by bolts, and the support 7 is a U-shaped structure. A detachable powder receiving cup 8 is arranged on the support 7, and the powder receiving cup 8 is located below the powder outlet assembly 2. A limiting plate 10 is arranged above the support 7, and a limiting member 1001 is arranged on the limiting plate 10. The support 7 and the limiting plate 10 (limiting member 1001) can limit the powder receiving cup 8 and restrict the powder receiving cup 8 here. When the powder receiving cup 8 needs to be taken out, the powder receiving cup 8 needs to be slightly pressed downward so that the cup mouth of the powder receiving cup 8 leaves the limiting member 1001, and then the powder receiving cup 8 can be removed.

[0033] Please refer to Figure 2 Furthermore, an opening is provided on one side of the shell 1, and the weight sensor 6 is installed in the opening of the shell 1. One end of the weight sensor 6 is located inside the shell 1, and the other end is located outside the shell 1. The support 7 is located outside the shell 1.

[0034] A weight sensor bracket 9 is arranged inside the housing 1 . The weight sensor bracket 9 is fixed to the housing 1 by bolts. The weight sensor 6 is fixed to the weight sensor bracket 9 by bolts.

[0035] The utility model is a coffee bean grinder with precise quantitative coffee powder. Figure 5 illustrate:

[0036] S1, power on;

[0037] S2. Select the grinding weight. Select the grinding weight through the control panel 4. For example, if the final coffee powder weight is 100g and the error weight is 100g±5g, the warning weight will be automatically set to 90g.

[0038] S3, peeling, removing the weight of the powder cup 8 and the support 7, at this time the touch screen of the control panel 4 shows the weight as 0g;

[0039] S4, the motor 102 rotates, driving the blade 103 to rotate to grind the coffee beans, and the ground coffee powder passes through the powder discharging assembly 2 and falls into the powder receiving cup 8;

[0040] S5, dynamic weighing, when the coffee powder falls, the weight sensor 6 will perform dynamic weighing on the coffee powder;

[0041] S6: Whether the warning value is reached. When the touch screen of the control panel 4 shows that the weight (coffee powder weight) reaches 90g, execute step S7; when the touch screen of the control panel 4 shows that the weight (coffee powder weight) is less than 90g, execute step S4, and then execute the steps in sequence.

[0042] S7, the motor 102 stops and the coffee beans are no longer ground. At this time, some coffee powder still remains in the powder discharging assembly 2 and continues to fall into the powder receiving cup 8. Assuming that this part of coffee powder is about 10g, this part of coffee powder (10g) + dynamically weighed coffee powder (90g) can reach about 100g;

[0043] S8. After grinding is completed, the touch screen of the control panel 4 displays the weight (weight of coffee powder):

[0044] S9, whether the weight is within the error range. If the weight is within 100g±5g, it means the weight is correct, and step S10 is executed; if the weight is not within 100g±5g, for example, the final weight is displayed as 110g, step S11 is executed;

[0045] S10, the process ends;

[0046] S11, pre-stop weight difference correction. Since the final mass of S9 is 110g, it can be known that the powder produced in S7 is about 20g. At this time, the warning weight will be changed to 80g, and the subsequent S6 warning value will be executed according to the correction.

[0047] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coffee bean grinder for accurately quantitatively measuring coffee powder, comprising a housing and a powder outlet assembly, wherein a grinding chamber is arranged at the top of the housing, a motor is arranged inside the housing, a knife disc is mounted on the output shaft of the motor, the knife disc is located in the grinding chamber, the powder outlet assembly is connected to the grinding chamber, and is characterized in that: It also includes a quantitative weighing component, which includes a power board, a control board, an AD conversion board and a weight sensor. The power board, the control board, the AD conversion board and the weight sensor are all arranged in a shell. The motor, the control board, the AD conversion board are electrically connected to the power board, and the weight sensor is electrically connected to the AD conversion board. An MCU module is integrated on the power board. A support is provided on the weight sensor, and a detachable powder receiving cup is provided on the support. The powder receiving cup is located below the powder outlet component.

2. The coffee bean grinder for precise quantitative coffee powder according to claim 1, characterized in that: An opening is provided on one side of the shell, and the weight sensor is installed in the opening of the shell. One end of the weight sensor is located inside the shell, and the other end is located outside the shell. The support is located outside the shell.

3. The coffee bean grinder for precise quantitative coffee powder according to claim 2, characterized in that: A weight sensor bracket is arranged inside the shell, and the weight sensor is arranged on the weight sensor bracket.

4. The coffee bean grinder for precise quantitative coffee powder according to claim 2, characterized in that: The powder outlet assembly comprises a connecting pipe and a powder outlet pipe, wherein the connecting pipe is connected to the outside of the grinding chamber and communicates with the grinding chamber, and the powder outlet pipe is detachably connected to the connecting pipe.

5. The coffee bean grinder for precise quantitative coffee powder according to claim 4, characterized in that: At least one lock buckle is arranged on the outer wall of the connecting pipe, and at least one lock groove is arranged on the powder outlet pipe, and the lock groove is used in cooperation with the lock buckle.

6. The coffee bean grinder for precise quantitative coffee powder according to claim 1, characterized in that: A limiting plate is arranged above the support, and a limiting member is arranged on the limiting plate.

7. The coffee bean grinder for precise quantitative coffee powder according to claim 5, characterized in that: The locking groove is an L-shaped structure.

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