A method of automatically loading coffee powder

Abstract

The present application relates to the technical field of automatic coffee machine, and particularly relates to a method for automatically loading coffee powder, which is applied to a coffee brewing device, the coffee brewing device comprising a fixed brewing seat and a movable brewing head, and a brewing cavity is formed between the fixed brewing seat and the movable brewing head; the method comprises the following steps: S1, the movable brewing head and the fixed brewing seat are in a first position, and the brewing cavity is loaded with first coffee powder; S2, the movable brewing head moves towards the fixed brewing seat and compresses the volume of the first coffee powder to form a first coffee cake; S3, the movable brewing head moves away from the fixed brewing seat and returns to the first position, and the brewing cavity is loaded with second coffee powder; S4, the movable brewing head moves towards the fixed brewing seat and compresses the second coffee powder and the first coffee cake to form a second coffee cake; and S5, loading and compression are completed, and coffee brewing is started. In this way, after loading and compressing coffee powder in the brewing cavity for multiple times, more coffee powder can be loaded, and then one-time brewing is performed, and finally, more concentrated coffee liquid is obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of full-automatic coffee machines, in particular to a method for automatically loading coffee powder. BACKGROUND

[0002] At present, the full-automatic coffee machines on the market are limited by structure and can only load coffee powder once for brewing coffee. For example, the patent for invention with the authorization announcement No. CN109497836A discloses a method for automatically brewing coffee and a coffee brewing machine. The coffee brewing machine comprises a brewing plug and a brewing cup. The method comprises the following steps: S1, controlling the brewing plug to be pressed down; S2, when the brewing plug is subjected to a counterforce, controlling the brewing plug to stop being pressed down; S3, pumping a first preset amount of water into the brewing cup for pre-wetting; S4, controlling the brewing plug to continue being pressed down until it stops being pressed down when subjected to a counterforce; and S5, pumping water into the brewing cup for brewing coffee. The prior art comprises loading a certain amount of coffee powder, pressing it down for the first time, injecting a water amount for pre-wetting, flattening the coffee powder, pressing it down for the second time, and brewing coffee after the coffee powder is pressed down. The defects of the prior art are as follows: the coffee powder is loaded once, the ground coffee powder is free to accumulate into a hill shape, there is space between the coffee powder particles, and the loading amount of coffee powder is affected by the adjustment of coarse and fine powder, the size error of parts, etc., resulting in that the loaded coffee powder is less, and the brewed coffee is usually relatively light.

[0003] Therefore, the prior art still has room for improvement and development. SUMMARY

[0004] In order to solve the problems of the prior art, the present application provides a method for automatically loading coffee powder, which is applied to a coffee brewing device. The method can load more coffee powder by loading and compressing coffee powder in a brewing chamber for multiple times, brew coffee once, and finally obtain more concentrated coffee liquid. Compared with brewing coffee by loading coffee powder once, the method can brew more coffee liquid while maintaining the same concentration.

[0005] In order to achieve the above-mentioned purpose, the technical scheme applied by the present application is as follows:

[0006] A method for automatically loading coffee powder is applied to a coffee brewing device. The coffee brewing device comprises a fixed brewing seat and a movable brewing head, and a brewing chamber is formed between the fixed brewing seat and the movable brewing head.

[0007] The method comprises the following steps:

[0008] S1, the movable brewing head and the fixed brewing seat are in a first position, and the brewing chamber loads first coffee powder;

[0009] S2, the movable brewing head moves towards the fixed brewing seat and compresses the volume of the first coffee powder to form a first coffee cake;

[0010] S3, the movable brewing head moves away from the fixed brewing seat to the first position, and the brewing chamber is loaded with the second coffee powder;

[0011] S4, the movable brewing head moves towards the fixed brewing seat and compresses the second coffee powder and the first coffee cake to form a second coffee cake;

[0012] S5, the loading and compression are completed, and coffee brewing is started.

[0013] According to the above scheme, between S2 and S3 further comprises:

[0014] S21, when the length of the first coffee cake compressed by the movable brewing head is less than the set length, S3 is executed;

[0015] S22, when the length of the first coffee cake compressed by the movable brewing head is equal to or greater than the set length, S5 is executed.

[0016] According to the above scheme, between S4 and S5 further comprises:

[0017] S41, when the length of the second coffee cake compressed by the movable brewing head is less than the set length, S3 is executed;

[0018] S42, when the length of the second coffee cake compressed by the movable brewing head is equal to or greater than the set length, S5 is executed.

[0019] According to the above scheme, the first position in S1 and S3 is the coffee powder loading position.

[0020] According to the above scheme, in S2 and S4, when the movable brewing head moves towards the fixed brewing seat and is compressed by a reaction force, the movable brewing head stops moving.

[0021] According to the above scheme, in S2, S3, and S4, the movable brewing head is driven to displace by a driving motor, the driving motor detects the number of revolutions of the driving motor through a number of revolutions sensor, which is used to convert the compression length of the coffee cake, and the number of revolutions of the driving motor, the moving stroke of the movable brewing head, and the compression length of the coffee cake are proportional.

[0022] According to the above scheme, when the brewing chamber is empty, the movable brewing head has a maximum stroke relative to the fixed brewing seat, and a minimum length a is provided between the movable brewing head and the fixed brewing seat; when the brewing chamber is fully loaded and the coffee cake is compressed, a maximum length b is provided between the movable brewing head and the fixed brewing seat; and the set length of the coffee cake is between a-b.

[0023] According to the above scheme, in S1, the weight of the first coffee powder is less than or equal to the weight of the coffee cake with the set length, and the weight of the coffee powder is inversely proportional to the compression length of the coffee cake.

[0024] According to the above scheme, the weight of the first coffee powder is 5g.

[0025] According to the above scheme, the method is applied to a coffee brewing device.

[0026] The present application has the following advantages:

[0027] The present application is configured to load more coffee powder in the brewing chamber by multiple loading and compression of coffee powder, and then perform one-time brewing to obtain more concentrated coffee liquid. Compared with brewing coffee by one-time loading of coffee powder, more coffee liquid can be brewed while maintaining the same concentration. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of a method for automatically loading coffee powder according to the present application;

[0029] Figure 2 is a schematic diagram of a coffee brewing device loading first coffee powder according to the present application;

[0030] Figure 3 is a schematic diagram of a coffee brewing device compressing first coffee powder according to the present application;

[0031] Figure 4 is a schematic diagram of a coffee brewing device loading second coffee powder according to the present application;

[0032] Figure 5 is a schematic diagram of a coffee brewing device compressing second coffee powder according to the present application.

[0033] In the drawings:

[0034] 1, fixed brewing seat; 2, movable brewing head; 21, screw rod; 22, nut; 4, brewing chamber; 41, powder inlet; 5, bean grinding assembly; 6, drive motor; 7, number of turns sensor. DETAILED DESCRIPTION

[0035] The technical solutions of the present application will be described below in conjunction with the drawings and examples.

[0036] As shown in Figures 1 to 5 , the method for automatically loading coffee powder according to the present application is applied to a coffee brewing device, which includes a fixed brewing seat 1 and a movable brewing head 2, and a brewing chamber 4 is formed between the fixed brewing seat 1 and the movable brewing head 2; the method includes:

[0037] S1, the movable brewing head 2 and the fixed brewing seat 1 are in a first position, and the brewing chamber 4 loads first coffee powder; as Figure 2As shown, at this time, the powder receiving port 41 of the brewing chamber 4 is aligned with the lower powder port of the bean grinding assembly 5, the bean grinding assembly 5 starts to work, loads the first coffee powder, and the first coffee powder is free-falling to form a lower-higher pointed hill shape in the brewing chamber 4, and slowly fills up to the vicinity of the powder receiving port 41, which can be understood as the maximum powder receiving amount of the first coffee powder, and the first coffee powder pile is not compressed, and there is a gap between the powder particles, and at the same time, the brewing chamber 4 also has space not filled.

[0038] S2, the movable brewing head 2 moves to the fixed brewing seat 1 and compresses the volume of the first coffee powder to form a first coffee cake; as Figure 3 As shown, when the movable brewing head 2 is driven by the motor 6 to move to the position of the fixed brewing seat 1, the powder receiving port 41 of the brewing chamber 4 (which is located on the movable brewing head 2) moves relative to the end face of the fixed brewing seat 1 and closes the powder receiving port 41, and the movable brewing head 2 slowly compresses the first coffee powder into a first coffee cake, and the movable brewing head 2 is subjected to a reaction force, which is transmitted to the driving motor 6, and the number of turns sensor 7 detects that the number of turns of the driving motor 6 decreases to a set value, and the driving motor 6 stops working, and the movable brewing head 2 stops compressing.

[0039] S3, the movable brewing head 2 moves away from the fixed brewing seat 1 to return to the first position, and the brewing chamber 4 loads the second coffee powder; as Figure 4 As shown, at this time, the first coffee powder is compressed to form a first coffee cake, and is in the brewing chamber 4 away from the powder receiving port 41, to make room for loading the second coffee powder.

[0040] S4, the movable brewing head 2 moves to the fixed brewing seat 1 and compresses the second coffee powder and the first coffee cake to form a second coffee cake; as Figure 5 As shown, the second coffee powder has the same density as the first coffee cake, and the second coffee cake is formed.

[0041] S5, loading and compression are completed, and coffee brewing starts.

[0042] Further, between S2 and S3, there is also:

[0043] S21, when the length of the first coffee cake compressed by the movable brewing head 2 is less than the set length, S3 is executed; the second coffee powder is loaded, and the set length is usually equal to the required amount of coffee powder. The density of the coffee cake after being compressed in the brewing chamber 4 is fixed, and at this time, only the length of the position of the movable brewing head 2 can control the amount of coffee powder. When the brewing chamber 4 is empty of coffee powder, the movable brewing head 2 is completely moved to the bottom of the fixed brewing seat 1 with the minimum length a; when the brewing chamber 4 is loaded with the maximum amount of compressed coffee cake, the movable brewing head 2 is provided with the maximum length b with the fixed brewing seat 1; the movable brewing head 2 is driven to displace by the driving motor 6, the driving motor 6 detects the number of revolutions of the driving motor 6 through the number of revolutions sensor 7, which is used to convert the compression length of the coffee cake. The number of revolutions of the driving motor 6, the moving stroke of the movable brewing head 2 and the compression length of the coffee cake are proportional. In the range of the minimum length a to the maximum length b of the brewing chamber 4, different weights of coffee cake are linearly corresponded, and different numbers of revolutions of the driving motor 6 are also corresponded.

[0044] Preferably, the set length is between a and b.

[0045] Preferably, the first coffee powder weight is less than or equal to the coffee cake weight corresponding to the set length.

[0046] Preferably, the first coffee powder weight is less than or equal to the coffee cake weight corresponding to the set length.

[0047] Preferably, the first coffee powder weight is 5g.

[0048] For example, when the brewing chamber 4 is b, 24g of coffee powder can be fully loaded, and at this time, the movable brewing head 2 needs to be moved from the first position (powder receiving position) to the a position of the brewing chamber 4, which corresponds to the driving motor 6 needing to rotate 200 times; when 12g of coffee powder is required, the set length should be 1 / 2 of the brewing chamber 4, which corresponds to the driving motor 6 needing to rotate 300 times; that is, 1 / 2 of the length of the brewing chamber 4 corresponds to 12g of coffee powder, and the driving motor 6 rotates 100 times. Here, only numerical examples are listed, which can be flexibly set according to needs.

[0049] In practical applications, the powder output rate of each bean grinding assembly 5 is difficult to guarantee consistency, and the influencing factors include but are not limited to: coffee powder fineness difference, grinding motor speed deviation, part size cumulative deviation, coffee bean variety, etc. Therefore, it cannot be guaranteed to accurately grind 12g of coffee powder, but a much smaller amount of coffee powder can be set, such as grinding 5 seconds of coffee powder in the brewing chamber 4 first, i.e. the first coffee powder, compressing the first coffee powder into a first coffee cake, that is, the brewing chamber 4 length formed by the movement of the movable brewing head 2 from the first position to the fixed brewing seat 1 and the compression of the coffee powder, and the number of turns sensor 7 records the number of turns of the drive motor 6. According to the number of turns of the drive motor 6, the length ratio of the brewing chamber 4 position can be accurately converted, assuming that the length ratio is 1 / 3 of the brewing chamber 4, then the coffee cake weight is 1 / 3 x 24 = 8g, and the bean grinding assembly 5 powder output rate is 8g / 5s = 1.6g / s; Thus, the process of compressing 8g of the first coffee cake is completed, and the grinding motor needs to work for 2.5s when loading the second coffee powder, resulting in 4g (2.5 x 1.6) of coffee powder.

[0050] S22, when the length of the first coffee cake compressed by the movable brewing head 2 is equal to or greater than the set length, execute S5.

[0051] Further, between S4 and S5, there is also:

[0052] S41, when the length of the second coffee cake compressed by the movable brewing head 2 is less than the set length, execute S3;

[0053] S42, when the length of the second coffee cake compressed by the movable brewing head 2 is equal to or greater than the set length, execute S5.

[0054] Further, the first position in S1 and S3 is the coffee powder loading position. That is, the powder inlet 41 of the brewing chamber 4 is located below the powder outlet of the bean grinding assembly 5.

[0055] Further, in S2 and S4, when the movable brewing head 2 moves towards the fixed brewing seat 1 and is compressed by the reaction force, the movable brewing head 2 stops moving.

[0056] The above method is applied to a coffee brewing device, which comprises a fixed brewing seat 1, a movable brewing head 2, a bean grinding assembly 5 and a drive motor 6, a brewing chamber 4 is formed between the fixed brewing seat 1 and the movable brewing head 2, the powder outlet of the bean grinding assembly 5 is correspondingly arranged with the powder inlet 41 of the brewing chamber 4, and the drive motor 6 is used to drive the movable brewing head 2 to move back and forth relative to the fixed brewing seat 1.

[0057] Further, when the powder inlet 41 of the brewing chamber 4 is located below the powder outlet of the bean grinding assembly 5, the movable brewing head 2 and the fixed brewing seat 1 are in the first position.

[0058] Further, the first end of the movable brewing head 2 is sleeved on the fixed brewing seat 1, and the movable brewing head 2 and the fixed brewing seat 1 are coaxially arranged.

[0059] Further, the second end of the movable brewing head 2 is provided with a screw rod 21, a nut 22 is threadedly connected on the screw rod 21, and the nut 22 is driven to rotate forward and backward by the driving motor 6, so as to drive the movable brewing head 2 to move back and forth relative to the fixed brewing seat 1.

[0060] The embodiments of the present application are described above with reference to the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are only illustrative but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, which all belong to the protection scope of the present application.

Claims

1. A method for automatically loading coffee powder, applied to a coffee brewing device, the coffee brewing device comprising a fixed brewing seat (1) and a movable brewing head (2), a brewing cavity (4) being formed between the fixed brewing seat (1) and the movable brewing head (2); the method comprising: S1, the movable brewing head (2) is in a first position with the fixed brewing seat (1), the first position being a coffee powder loading position, the brewing cavity (4) loading first coffee powder; S2, the movable brewing head (2) moves to the fixed brewing seat (1) and compresses the volume of the first coffee powder to form a first coffee cake; S3, the movable brewing head (2) moves away from the fixed brewing seat (1) to return to the first position, the brewing cavity (4) loading second coffee powder; S4, the movable brewing head (2) moves to the fixed brewing seat (1) and compresses the second coffee powder and the first coffee cake to form a second coffee cake; S5, loading and compression are completed, and brewing of coffee is started; between S2 and S3, further comprising: S21, when the length of the first coffee cake compressed by the movable brewing head (2) is less than a set length, S3 is executed; S22, when the length of the first coffee cake compressed by the movable brewing head (2) is equal to or greater than the set length, S5 is executed; between S4 and S5, further comprising: S41, when the length of the second coffee cake compressed by the movable brewing head (2) is less than the set length, S3 is executed; S42, when the length of the second coffee cake compressed by the movable brewing head (2) is equal to or greater than the set length, S5 is executed; in S2 and S4, when the movable brewing head (2) moves to the fixed brewing seat (1) and compression is resisted by a reaction force, the movable brewing head (2) stops moving; in S2, S3 and S4, the movable brewing head (2) is driven to displace by a drive motor (6), the drive motor (6) detects the number of revolutions of the drive motor (6) by a number of revolutions sensor (7), for converting the compression length of the coffee cake, the number of revolutions of the drive motor (6), the moving stroke of the movable brewing head (2) and the compression length of the coffee cake are directly proportional; when the brewing cavity (4) is empty, when the movable brewing head (2) moves the maximum stroke relative to the fixed brewing seat (1), a minimum length a is provided between the movable brewing head (2) and the fixed brewing seat (1); when the brewing cavity (4) is full of compressed coffee cake, a maximum length b is provided between the movable brewing head (2) and the fixed brewing seat (1); the set length of the coffee cake is between a and b; in S1, the weight of the first coffee powder is less than or equal to the weight of the coffee cake of the set length, the weight of the coffee powder is inversely proportional to the compression length of the coffee cake; the weight of the first coffee powder is 5g; the method is applied to a coffee brewing device. characterized in that ​ ​ ​ ​ ​ ​ 2. A method of automatically loading coffee powder according to claim 1, characterized in that, ​ ​ ​ 3. A method of automatically loading coffee powder according to claim 1, characterized in that, ​ ​ ​ 4. A method of automatically loading coffee powder according to claim 1, characterized in that, ​ 5. A method of automatically loading coffee powder according to claim 1, characterized in that, ​ 6. A method of automatically loading coffee powder according to claim 1, characterized in that, ​ 7. A method of automatically loading coffee powder as claimed in claim 1, characterized in that, ​ 8. A method of automatically loading coffee powder as claimed in claim 1, characterized in that, ​ 9. A method of automatically loading coffee powder as claimed in claim 1, characterized in that, ​

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