Method for automatically loading coffee powder

Abstract

The invention relates to the technical field of full-automatic coffee machines, in particular to a method for automatically loading coffee powder, which is applied to a coffee brewing device, the coffee brewing device comprises 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 steps that S1, the movable brewing head and the fixed brewing base are located at the first position, and first coffee powder is loaded in the brewing cavity; 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 leaves 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, completing loading and compression, and starting to brew coffee. By means of the arrangement, more coffee powder can be loaded after the coffee powder is loaded and compressed in the brewing cavity for multiple times, then one-time brewing is carried out, and finally thicker coffee liquid is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of fully automatic coffee machines, and in particular to a method for automatically loading coffee powder. Background Art

[0002] At present, the fully automatic coffee machines on the market are limited by their structure and all of them are loaded with coffee powder at one time to brew coffee. For example, the invention patent with the authorization announcement number CN109497836A discloses a method for automatically brewing coffee and a coffee brewing machine, the coffee brewing machine includes a brewing plug and a brewing cup, and the method includes: S1, controlling the brewing plug to press down; S2, when the brewing plug is subjected to a reaction force, controlling the brewing plug to stop pressing down; S3, pumping a first preset amount of water into the brewing cup for pre-wetting; S4, controlling the brewing plug to continue to press down until it is subjected to a reaction force and stops pressing down; S5, pumping water into the brewing cup to brew coffee. This prior art includes loading a certain amount of coffee powder, compacting it for the first time, injecting water to pre-wet it, flushing the coffee powder flat, compacting it for the second time, and brewing coffee after the coffee powder is compacted. The defects of the prior art are: it adopts a one-time loading method for coffee powder. Since the ground coffee powder will freely pile up into a hill shape, there is space between the coffee powder particles. At the same time, the grinding process is affected by the adjustment of coarse and fine powder, the size error of parts, etc., resulting in less loaded coffee powder, and the brewed coffee is usually weak.

[0003] Therefore, there is still room for improvement and development in the existing technology. Summary of the invention

[0004] In order to solve the problems of the prior art, the present invention provides a method for automatically loading coffee powder, which is applied to a coffee brewer. After loading and compressing the coffee powder multiple times in the brewing chamber, more coffee powder can be loaded and brewed at one time to finally obtain a stronger coffee liquid. Compared with brewing coffee with coffee powder loaded once, more coffee liquid can be brewed while maintaining the same concentration.

[0005] In order to achieve the above object, the technical solution applied by the present invention is as follows:

[0006] A method for automatically loading coffee powder is applied to a coffee brewer, wherein the coffee brewer comprises a fixed brewing seat and a movable brewing head, wherein a brewing cavity is formed between the fixed brewing seat and the movable brewing head;

[0007] The method comprises:

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

[0009] S2, the movable brewing head moves toward 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 leaves the fixed brewing seat and returns to the first position, and the brewing chamber is loaded with the second coffee powder;

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

[0012] S5. Loading and compression are completed, and coffee brewing begins.

[0013] According to the above scheme, between S2 and S3, there are also:

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

[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, execute S5.

[0016] According to the above scheme, between S4 and S5, it also includes:

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

[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, execute S5.

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

[0020] According to the above solution, in S2 and S4, when the movable brewing head moves toward the fixed brewing seat and is compressed and receives 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 move by a driving motor, and the driving motor detects the number of rotations of the driving motor through a rotation sensor, which is used to convert the compressed length of the coffee cake. The number of rotations of the driving motor, the moving stroke of the movable brewing head and the compressed length of the coffee cake are proportional.

[0022] According to the above scheme, when the brewing chamber is unloaded, when the movable brewing head moves the maximum stroke relative to the fixed brewing seat, a minimum length a is set between the movable brewing head and the fixed brewing seat; when the brewing chamber is fully loaded with compressed coffee cakes, a maximum length b is set between the movable brewing head and the fixed brewing seat; the set length of the coffee cake is between ab.

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

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

[0025] According to the above solution, the method is applied to a coffee brewer.

[0026] Beneficial effects of the present invention:

[0027] The present invention is configured in such a way that after loading and compressing coffee powder multiple times in the brewing chamber, more coffee powder can be loaded and brewed at one time, and finally a stronger coffee liquid can be obtained. Moreover, compared with brewing coffee with coffee powder loaded once, more coffee liquid can be brewed while maintaining the same concentration. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 is a schematic diagram of a coffee brewer loaded with first coffee powder according to the present invention;

[0030] Figure 3 It is a schematic diagram of a coffee brewer compressing first coffee powder according to the present invention;

[0031] Figure 4 is a schematic diagram of a coffee brewer of the present invention loaded with second coffee powder;

[0032] Figure 5 It is a schematic diagram of a coffee brewer compressing second coffee powder according to the present invention.

[0033] In the figure:

[0034] 1. Fixed brewing seat; 2. Movable brewing head; 21. Screw; 22. Nut; 4. Brewing chamber; 41. Powder receiving port; 5. Grinding bean assembly; 6. Driving motor; 7. Turn sensor. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0036] like Figures 1 to 5 As shown, the method of automatically loading coffee powder according to the present invention is applied to a coffee brewer, wherein the coffee brewer comprises a fixed brewing seat 1 and a movable brewing head 2, and a brewing cavity 4 is formed between the fixed brewing seat 1 and the movable brewing head 2; the method comprises:

[0037] S1, the movable brewing head 2 and the fixed brewing seat 1 are in the first position, and the brewing chamber 4 is loaded with the first coffee powder; 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, and the bean grinding assembly 5 starts to work and loads the first coffee powder. The first coffee powder falls freely and piles up in the brewing chamber 4 to form a hill shape with a large bottom and a pointed top, 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. The first coffee powder pile has not been compressed, and there are gaps between the powder particles. At the same time, there is space in the brewing chamber 4 that is not filled.

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

[0039] S3, the movable brewing head 2 leaves the fixed brewing seat 1 and returns to the first position, and the brewing chamber 4 is loaded with the second coffee powder; Figure 4 As shown, at this time, the first coffee powder is compressed to form a first coffee cake, and is located in the brewing chamber 4 away from the powder receiving port 41, thereby freeing up the required space for loading the second coffee powder.

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

[0041] S5. Loading and compression are completed, and coffee brewing begins.

[0042] Furthermore, between S2 and S3, there are also:

[0043] S21, when the length of the first coffee cake compressed by the movable brewing head 2 is less than the set length, execute S3; load the second coffee powder, usually set the length equal to the required amount of coffee powder, the density of the coffee cake after being compressed in the brewing chamber 4 is fixed, at this time, only need to control the position length of the movable brewing head 2 to control the amount of coffee powder; when there is no coffee powder in the brewing chamber 4, the movable brewing head 2 is completely moved to the bottom of the fixed brewing seat 1 with a minimum length a; when the brewing chamber 4 is loaded with the maximum amount of compressed coffee cake, the movable brewing head 2 and the fixed brewing seat 1 are set with a maximum length b; the movable brewing head 2 is driven to move by the driving motor 6, and the driving motor 6 detects the number of rotations of the driving motor 6 through the number of rotations sensor 7, which is used to convert the compressed length of the coffee cake, and the number of rotations of the driving motor 6, the moving stroke of the movable brewing head 2 and the compressed 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 cakes correspond linearly, and also correspond to different numbers of rotations of the driving motor 6.

[0044] Preferably, the length is set between ab.

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

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

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

[0048] For example, when the brewing chamber 4 is b, it can be fully loaded with 24g of coffee powder. At this time, the movable brewing head 2 needs to move from the first position (powder receiving position) to the a position of the brewing chamber 4, and the corresponding drive motor 6 needs to rotate 200 times; when 12g of coffee powder is needed, the set length should be 1 / 2 of the brewing chamber 4, and the corresponding drive motor 6 needs to rotate 300 times; that is, 1 / 2 of the brewing chamber 4 length corresponds to 12g of coffee powder, and the drive motor 6 rotates 100 times. The numerical examples listed here are just examples, which can be flexibly set according to needs.

[0049] In actual applications, it is difficult to ensure the same powder yield of each bean grinding assembly 5, and the influencing factors include but are not limited to: coffee powder coarseness difference, grinding motor speed deviation, component size cumulative deviation, coffee bean variety, etc. Therefore, it is not guaranteed that 12g of coffee powder can be ground accurately, but the amount of coffee powder much less than 12g can be set, for example, first grind the coffee powder in the brewing chamber 4 for 5 seconds, that is, the first coffee powder, and compress the first coffee powder into the first coffee cake, that is, the length of the brewing chamber 4 formed by the movable brewing head 2 moving from the first position to the fixed brewing seat 1 and compressing the coffee powder, and at the same time, the revolution sensor 7 records the number of revolutions of the driving motor 6. The ratio of the position length of the brewing chamber 4 can be accurately calculated according to the number of revolutions of the driving motor 6. If the length ratio is 1 / 3 of the brewing chamber 4, the weight of the coffee cake is 1 / 3×24=8g, and the powder output rate of the grinding component 5 is calculated to be 8g / 5s=1.6g / s. In this way, the process of compressing 8g of the first coffee cake is completed. When loading the second coffee powder, the grinding motor needs to work for 2.5s to obtain 4g (2.5×1.6) 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] Furthermore, between S4 and S5, there are 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] Specifically, the first position in S1 and S3 is the position for loading coffee powder, that is, the powder receiving port 41 of the brewing chamber 4 is located below the lower powder port of the grinding assembly 5 .

[0055] Furthermore, in S2 and S4, when the movable brewing head 2 moves toward the fixed brewing seat 1 and is compressed and receives a reaction force, the movable brewing head 2 stops moving.

[0056] The above method is applied to a coffee brewer, which includes a fixed brewing seat 1, a movable brewing head 2, a bean grinding assembly 5 and a driving motor 6. A brewing cavity 4 is formed between the fixed brewing seat 1 and the movable brewing head 2. The lower powder port of the bean grinding assembly 5 is correspondingly arranged to the powder receiving port 41 of the brewing cavity 4. The driving motor 6 is used to drive the movable brewing head 2 to move back and forth relative to the fixed brewing seat 1.

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

[0058] Furthermore, 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] Furthermore, a screw rod 21 is disposed at the second end of the movable brewing head 2 , a nut 22 is threadedly connected to the screw rod 21 , and the nut 22 is driven by the driving motor 6 to rotate forward and reversely, so that the movable brewing head 2 moves back and forth relative to the fixed brewing seat 1 .

[0060] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which belong to the protection scope of the present invention.

Claims

1. A method for automatically loading coffee powder, applied to a coffee brewer, the coffee brewer 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); It is characterized in that The method comprises: S1, the movable brewing head (2) and the fixed brewing seat (1) are in a first position, and the brewing chamber (4) is loaded with first coffee powder; S2, the movable brewing head (2) moves toward 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) leaves the fixed brewing seat (1) and returns to the first position, and the brewing chamber (4) is loaded with second coffee powder; S4, the movable brewing head (2) moves toward 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 coffee brewing begins.

2. The method for automatically loading coffee powder according to claim 1, characterized in that: Between S2 and S3 also include: S21, when the length of the first coffee cake compressed by the movable brewing head (2) is less than a set length, executing S3; 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.

3. The method for automatically loading coffee powder according to claim 1, characterized in that: Also included between S4 and S5: S41, when the length of the second coffee cake compressed by the movable brewing head (2) is less than a set length, executing S3; 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.

4. The method for automatically loading coffee powder according to claim 1, characterized in that: In S1 and S3, the first position is the coffee powder loading position.

5. The method for automatically loading coffee powder according to claim 1, characterized in that: In S2 and S4, when the movable brewing head (2) moves toward the fixed brewing seat (1) and is compressed and subjected to a reaction force, the movable brewing head (2) stops moving.

6. The method for automatically loading coffee powder according to claim 1, characterized in that: In S2, S3 and S4, the movable brewing head (2) is driven to move by a driving motor (6), and the driving motor (6) detects the number of rotations of the driving motor (6) through a rotation sensor (7) for calculating the compressed length of the coffee cake. The number of rotations of the driving motor (6), the moving stroke of the movable brewing head (2) and the compressed length of the coffee cake are proportional.

7. The method for automatically loading coffee powder according to claim 1, characterized in that: When the brewing chamber (4) is unloaded and the movable brewing head (2) moves to a 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 chamber (4) is fully loaded with a compressed coffee cake, a maximum length b is provided between the movable brewing head (2) and the fixed brewing seat (1); and the set length of the coffee cake is between ab.

8. The method for automatically loading coffee powder according to claim 1, characterized in that: In S1, the weight of the first coffee powder is less than or equal to the weight of a coffee cake of a set length, and the weight of the coffee powder is inversely proportional to the compressed length of the coffee cake.

9. The method for automatically loading coffee powder according to claim 1, characterized in that: The first coffee powder weighs 5 g.

10. The method for automatically loading coffee powder according to claim 1, characterized in that: The method is applied to a coffee brewer.

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