Extraction device, coffee machine and determination method

Abstract

The application provides an extraction device, a coffee machine and a determination method. The extraction device comprises a support, a powder receiving cylinder assembly connected with the support, which is used for containing raw materials, a powder pressing cylinder assembly connected with the support, which comprises an extraction sleeve and an extraction head, the extraction sleeve is movably arranged to extrude the raw materials in the powder receiving cylinder assembly, the extraction sleeve is provided with an extraction channel for the raw materials to enter the extraction sleeve, the extraction head is movably arranged opposite to the extraction sleeve when the extraction sleeve extrudes the raw materials, a first sensing module is used for sensing the position of the extraction sleeve, and a second sensing module is used for sensing the stroke of the extraction head. The application solves the technical problem that the volume of the sensor for controlling the amount of coffee powder in the grinding mechanism is relatively large and the occupied space is relatively large.

Description

Technical Field

[0001] This invention relates to the field of coffee machine technology, specifically to an extraction device, a coffee machine, and a determination method. Background Technology

[0002] In existing fully automatic espresso machines, the amount of coffee powder controlled is mostly determined by time-controlled grinding mechanism or by adding a weight sensor to the bottom of the powder container.

[0003] However, relying on time-controlled grinding mechanisms to control the amount of coffee powder can lead to significant deviations in powder quantity and inaccurate dispensing, making it difficult to precisely control the desired coffee strength. While adding a weight sensor to the bottom of the dispensing hopper solves the problem of inaccurate dispensing, coffee powder is typically measured in 0.1g units, and a weight sensor with 0.1g accuracy is expensive and bulky, taking up considerable space.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide an extraction device, a coffee machine, and a determination method to solve the technical problem that the sensor controlling the amount of coffee powder in the grinding mechanism of the related technology is relatively large in size and occupies a lot of space.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: An extraction apparatus is provided, comprising: an extraction device including a support; a powder receiving cylinder assembly connected to the support, the powder receiving cylinder assembly being used to hold raw materials; a powder pressing cylinder assembly connected to the support, the powder pressing cylinder assembly including an extraction sleeve and an extraction head; the extraction sleeve is movably disposed to compress the raw materials in the powder receiving cylinder assembly; the extraction sleeve is provided with an extraction channel for the raw materials to enter the extraction sleeve; when the extraction sleeve compresses the raw materials, the extraction head is movably disposed relative to the extraction sleeve; a first sensing module for sensing the position of the extraction sleeve; and a second sensing module for sensing the stroke of the extraction head.

[0007] Furthermore, the extraction device includes a moving component connected to the extraction sleeve; the first sensing module includes a first micro switch mounted on a support; the moving component is correspondingly positioned to move the moving component to a first preset position, thereby triggering the first micro switch.

[0008] Furthermore, the extraction head includes a slide rod inserted into the extraction channel, the slide rod being movably disposed within the extraction channel; a first sealing ring is provided between the slide rod and the extraction channel.

[0009] Furthermore, the extraction channel includes a first extraction channel and a second extraction channel arranged at intervals, and the slide bar includes a first slide bar inserted in the first extraction channel and a second slide bar inserted in the second extraction channel; the moving part is arranged between the first slide bar and the second slide bar.

[0010] Furthermore, the extraction sleeve includes a first mounting groove and a second mounting groove arranged at intervals; a first elastic element is provided in the first mounting groove, one end of the first elastic element is connected to the extraction sleeve, and the other end of the first mounting groove is connected to the extraction head; a second elastic element is provided in the second mounting groove, one end of the second elastic element is connected to the extraction sleeve, and the other end of the second elastic element is connected to the extraction head; the moving element is located between the first elastic element and the second elastic element.

[0011] Furthermore, the extraction device includes: a drive motor, on the output shaft of which a drive tooth is provided; an output gear, which meshes with the drive tooth to drive the powder pressing cylinder assembly to move by rotating the output gear; wherein, the second sensing module includes a second micro switch, which is correspondingly provided with the output gear to trigger the second micro switch by driving the output gear to rotate to a second preset position.

[0012] Furthermore, the support is provided with a first guide groove, which extends along the moving direction of the extraction head, and the extraction head is provided with a connecting block, which is movably disposed within the first guide groove.

[0013] Furthermore, the extraction device also includes a rotating component, which includes: a rotating shaft, an output gear having a connecting shaft, the connecting shaft passing through a bracket and connected to the rotating shaft; a slider, the slider being spaced apart from the rotating shaft; and an extraction head having a second guide groove, the slider being movably disposed within the second guide groove, so as to drive the extraction head to move by driving the rotating component to rotate.

[0014] Furthermore, the powder receiving cylinder assembly includes a receiving cavity for containing raw materials, the receiving cavity having a cylindrical structure, the extraction sleeve having a cylindrical extrusion shell, a second sealing ring being fitted on the extrusion shell, the second sealing ring abutting against the inner wall of the receiving cavity; and / or, a filter screen is provided at the opening of the extraction channel to block the extraction channel, the filter screen being provided with extraction holes, the extraction holes being disposed through the filter screen.

[0015] A coffee machine includes an extraction device, which is the extraction device described above.

[0016] A determination method applicable to the above-mentioned extraction device includes: driving the extraction head of the extraction device to move and causing the extraction sleeve to squeeze the raw material in the powder receiving cylinder assembly; if both the first sensing module and the second sensing module receive a signal, it is determined that the amount of raw material meets the requirements; if the first sensing module receives a signal but the second sensing module does not receive a signal, it is determined that the amount of raw material exceeds the standard; if the first sensing module does not receive a signal but the second sensing module receives a signal, it is determined that the amount of raw material is insufficient.

[0017] Beneficial effects:

[0018] 1. By using a microswitch combined with spring compression distance, the amount of coffee powder in the powder container is automatically detected, solving the problem of too much or too little coffee powder during extraction.

[0019] 2. Only the extraction device of this solution needs to be installed to control the amount of coffee powder in the coffee machine. There is no need to add a weight sensor, which takes up little space and has low cost.

[0020] 3. The method for controlling the amount of coffee powder in this solution is simple to operate and convenient to use. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the extraction apparatus according to an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of the powder pressing cylinder assembly according to an embodiment of the present invention;

[0023] Figure 3 This is an exploded structural diagram of the extraction device according to an embodiment of the present invention;

[0024] Figure 4 This is an exploded structural diagram of the powder pressing cylinder assembly according to an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the powder pressing cylinder assembly according to an embodiment of the present invention from another direction;

[0026] Figure 6 This is a schematic diagram of the powder receiving cylinder assembly of the extraction device according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the powder pressing cylinder assembly according to an embodiment of the present invention;

[0028] Figure 8 This is a flowchart of the determination method according to an embodiment of the present invention.

[0029] The above figures include the following reference numerals:

[0030] 1. Support; 11. First guide groove; 17. Support cover; 18. Limiting post; 2. Powder receiving cylinder assembly; 21. Receiving cavity; 3. Powder pressing cylinder assembly; 31. Extraction sleeve; 311. Extraction channel; 3111. First extraction channel; 3112. Second extraction channel; 313. First mounting groove; 314. Second mounting groove; 315. First elastic element; 316. Second elastic element; 317. Extrusion shell; 318. Second sealing ring; 31 9. Filter screen; 32. Extraction head; 321. Slide bar; 3211. First slide bar; 3212. Second slide bar; 322. Connecting block; 323. Second guide groove; 33. First sealing ring; 4. First sensing module; 41. First micro switch; 5. Second sensing module; 51. Second micro switch; 6. Moving part; 7. Drive motor; 8. Output gear; 81. Connecting shaft; 9. Rotating component; 91. Rotating shaft; 92. Slider. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0032] According to an embodiment of the present invention, an extraction apparatus is provided; please refer to [link / reference]. Figures 1 to 8 The system includes: a support 1; a powder receiving cylinder assembly 2 connected to the support 1, the powder receiving cylinder assembly 2 being used to hold raw materials; a powder pressing cylinder assembly 3 connected to the support 1, the powder pressing cylinder assembly 3 including an extraction sleeve 31 and an extraction head 32; the extraction sleeve 31 is movably arranged to squeeze the raw materials in the powder receiving cylinder assembly 2; the extraction sleeve 31 is provided with an extraction channel 311 for the raw materials to enter the extraction sleeve 31; when the extraction sleeve 31 squeezes the raw materials, the extraction head 32 is movably arranged relative to the extraction sleeve 31; a first sensing module 4, the first sensing module 4 being used to sense the position of the extraction sleeve 31; and a second sensing module 5, the second sensing module 5 being used to sense the stroke of the extraction head 32. In this way, when the extraction head 32 moves, it drives the extraction sleeve 31 to move. The extraction sleeve 31 squeezes the raw material in the powder receiving cylinder assembly 2, and the raw material enters the extraction channel 311. The reaction force of the raw material in the powder receiving cylinder assembly 2 on the powder pressing cylinder assembly 3 causes the extraction sleeve 31 to rise to a sufficient position distance. At this time, the first sensing module 4 is triggered, but the powder pressing cylinder assembly 3 has not moved to the position. Therefore, the powder pressing cylinder assembly 3 continues to move downward. When the second sensing module 5 is triggered, it means that the powder pressing cylinder assembly 3 has also moved to the position. At this time, the raw material in the powder receiving cylinder assembly 2 meets the extraction requirements.

[0033] Specifically, according to the above embodiments, the extraction device of this application can effectively control the amount of coffee powder, making the powder output accurate, and solves the technical problem that the sensor is relatively large and occupies a lot of space.

[0034] Specifically, see Figure 2 , Figure 3 The extraction device in this embodiment includes a moving component 6, which is connected to the extraction sleeve 31. The first sensing module 4 includes a first micro switch 41 mounted on the support 1. The moving component 6 and the first micro switch 41 are correspondingly arranged so that the extraction sleeve 31 drives the moving component 6 to a first preset position, thereby triggering the first micro switch 41. Thus, when the extraction head 32 drives the extraction sleeve 31 to move, the extraction sleeve 31 squeezes the raw material in the powder receiving cylinder assembly 2, causing the raw material to enter the extraction channel 311. At the same time, the extraction sleeve 31 stops moving due to the resistance of the raw material. At this time, by measuring the stroke of the extraction head 32, the height of the raw material is determined, thereby determining whether the raw material is insufficient. Afterwards, the extraction head 32 continues to move, while the extraction sleeve 31 stops moving. The extraction sleeve 31 then moves the moving part 6 to the first preset position, thereby triggering the first micro switch 41 to determine whether there is too much raw material. This setting ensures that the amount of coffee powder is always the same as the volume within the extraction channel 311, keeping it constant. This effectively controls the amount of coffee powder and avoids the problem of too much or too little powder. There is no need to set up a weighing sensor, thus solving the problem of too much or too little coffee powder during extraction.

[0035] Specifically, see Figure 1 , Figure 2 In this embodiment, the extraction head 32 includes a slide rod 321 inserted into the extraction channel 311, which is movably disposed within the extraction channel 311. A first sealing ring 33 is disposed between the slide rod 321 and the extraction channel 311. When the extraction head 32 moves, the slide rod 321 and the raw material entering the extraction channel 311 are pressed against each other. Since the slide rod 321 is movably disposed within the extraction channel 311, and the first sealing ring 33 is disposed between the slide rod 321 and the extraction channel 311 to block the movement trajectory of the raw material, the raw material obstructs the movement of the extraction sleeve 31. Therefore, the arrangement of the slide rod 321 and the first sealing ring 33 can make the raw material move more smoothly and with good sealing during the extraction process.

[0036] Specifically, see Figure 1 , Figure 2In this embodiment, the extraction channel 311 includes a first extraction channel 3111 and a second extraction channel 3112 arranged at intervals. The slide bar 321 includes a first slide bar 3211 inserted in the first extraction channel 3111 and a second slide bar 3212 inserted in the second extraction channel 3112. The moving part 6 is disposed between the first slide bar 3211 and the second slide bar 3212. When the raw material enters the first extraction channel 3111 and the second extraction channel 3112, since the slide bar 321 is movable, the raw material blocks the movement of the extraction sleeve 31, and the first slide bar 3211 and the second slide bar 3212 continue to move, thereby causing the moving part 6 to approach the first preset position. After reaching the first preset position, the first micro switch 41 is triggered. This arrangement of two sets of channels and two sets of slide bars increases the force-bearing area compared to the arrangement of one set of slide bars, allowing the raw material to exert a greater force, thereby triggering the first micro switch 41. By utilizing the force exerted by the raw material on the slide bar 321, the extraction device of this embodiment can trigger the first micro switch 41 by the moving part 6 without the need for a high-power motor, thereby controlling the amount of coffee powder.

[0037] Specifically, see Figure 5 The extraction sleeve 31 includes a first mounting groove 313 and a second mounting groove 314 spaced apart. A first elastic element 315 is disposed in the first mounting groove 313, with one end of the first elastic element 315 connected to the extraction sleeve 31 and the other end connected to the extraction head 32. A second elastic element 316 is disposed in the second mounting groove 314, with one end of the second elastic element 316 connected to the extraction sleeve 31 and the other end connected to the extraction head 32. The moving element 6 is located between the first elastic element 315 and the second elastic element 316. When the extraction head 32 drives the extraction sleeve 31 to move, and the raw material enters the extraction channel 311, the extraction sleeve 31 squeezes the raw material, and the raw material also exerts a force on the extraction sleeve 31, squeezing the first elastic element 315 in the first mounting groove 313 and the second elastic element 316 in the second mounting groove 314. This causes the extraction sleeve 31 and the moving element 6 to move relative to the extraction head 32. When the moving element 6 reaches the first preset position, it triggers the first micro switch 41. With this configuration of two sets of mounting slots and two sets of elastic elements, the extraction sleeve 31 and the moving part 6 in the extraction device of this embodiment can move relative to the extraction head 32 simply by the reaction force of the raw material on the spring. This is lightweight, convenient, and saves on the manufacturing cost of the extraction device of this embodiment.

[0038] Specifically, see Figure 3The extraction device in this embodiment includes: a drive motor 7, with drive teeth on its output shaft; an output gear 8, which meshes with the drive teeth to drive the output gear 8 to rotate, thereby driving the tamping cylinder assembly 3 to move; wherein, the second sensing module 5 includes a second micro switch 51, which is correspondingly arranged with the output gear 8, so as to trigger the second micro switch 51 by driving the output gear 8 to rotate to a second preset position. At the start of extraction, the drive motor 7 runs and drives the output gear 8 to rotate with the drive teeth. When the output gear 8 rotates to the second preset position, the second micro switch 51 is triggered. This setting can fix the rotation stroke of the output gear 8 by triggering the second micro switch 51, thereby fixing the movement stroke of the tamping cylinder assembly 3. By judging whether the second micro switch 51 and the first micro switch 41 are triggered, it can be determined whether the amount of coffee powder is standard, thus controlling the amount of coffee powder more precisely.

[0039] Specifically, see Figure 3 The support 1 is provided with a first guide groove 11, which extends along the moving direction of the extraction head 32. The extraction head 32 is provided with a connecting block 322, which is movably disposed within the first guide groove 11. In this way, the extraction head 32 can move downward relative to the powder pressing cylinder assembly 2 within the first guide groove 11 via the connecting block 322, thereby driving the extraction sleeve 31 to allow the raw material in the powder receiving cylinder assembly 2 to enter the extraction channel 311. This configuration is compact and saves production costs.

[0040] Specifically, see Figure 3 , Figure 4 The extraction device in this embodiment also includes a rotating component 9, which includes: a rotating shaft 91; an output gear 8 with a connecting shaft 81; the connecting shaft 81 passing through the bracket 1 and connected to the rotating shaft 91; a slider 92, which is spaced apart from the rotating shaft 91; and an extraction head 32 with a second guide groove 323, in which the slider 92 is movably disposed, so as to drive the rotating component 9 to rotate, thereby driving the extraction head 32 to move. When the drive motor 7 starts, it drives the output gear 8 to rotate, which in turn drives the rotating shaft 91 to rotate via the connecting shaft 81. The rotating shaft 91 then drives the slider 9 to slide via the rotating component 9, thereby driving the extraction head 32 to move. This connection arrangement allows the various structures within the extraction device to be more rationally distributed without affecting functionality, occupying less space and saving production costs.

[0041] Specifically, see Figure 2 , Figure 6 , Figure 7In this embodiment, the powder receiving cylinder assembly 2 includes a receiving cavity 21 for containing raw materials. The receiving cavity 21 has a cylindrical structure. The extraction sleeve 31 has a cylindrical extrusion shell 317. A second sealing ring 318 is fitted on the extrusion shell 317, and the second sealing ring 318 abuts against the inner wall of the receiving cavity 21. Alternatively, a filter screen 319 is provided at the opening of the extraction channel 311 to block the extraction channel 311. The filter screen 319 has extraction holes that pass through it. The extraction head 32 drives the extrusion shell 317 on the extraction sleeve 31 to move and enter the receiving cavity 21. The extrusion shell 317 extrudes the raw materials. The second sealing ring 318 abuts against the inner wall of the receiving cavity 21 and moves with the extrusion shell 317. At this time, the raw materials in the receiving cavity 21 enter the extraction channel 311 through the extraction holes on the filter screen 319. This arrangement ensures both sealing during the extraction process and the filtering of coffee powder.

[0042] Specifically, a coffee machine includes an extraction device, which is the extraction device described in the above embodiments.

[0043] Specifically, the extraction device of the coffee machine of this application adopts a scheme that uses a micro switch combined with spring compression distance to automatically detect the amount of coffee powder in the powder container, avoiding excessive or insufficient coffee during extraction, which would cause the coffee to be too bitter or too acidic, thus improving the user experience.

[0044] Specifically, see Figure 8 A determination method applicable to the extraction device of the above embodiment includes: the drive motor 7 drives the extraction head 32 of the extraction device to move, and drives the extraction sleeve 31 to squeeze the raw material in the powder receiving cylinder assembly 2. The coffee powder has a reaction force on the tamping cylinder assembly 3, and squeezes the spring of the tamping cylinder assembly 3.

[0045] If both the first sensing module 4 and the second sensing module 5 receive signals, it indicates that when the first micro switch 41 is triggered first, the reaction force of the coffee powder in the receiving cylinder assembly 2 on the tamping cylinder assembly 3 causes the extraction sleeve 31 to rise to a sufficient position distance, while the tamping cylinder assembly 3 does not move to the position and continues to move downward, and the spring continues to be compressed. Then the second micro switch 51 is triggered, and the tamping cylinder assembly 3 also moves to the position. At this time, the amount of coffee powder in the receiving cylinder assembly 2 is the value that meets the extraction requirements, and it is determined that the amount of raw material meets the requirements.

[0046] If the first sensing module 4 receives a signal but the second sensing module 5 does not, it means that when the first micro switch 41 is triggered first, and the tamping cylinder assembly 3 cannot continue to move downward, the spring reaches its compression limit, and the drive motor 7 is detected to be stalled. At this moment, the second micro switch 51 is not triggered, indicating that the tamping cylinder assembly 3 has not moved to the correct position, proving that the amount of coffee powder in the receiving cylinder assembly 2 is too much, and the amount of raw material exceeds the standard.

[0047] If the first sensing module 4 does not receive a signal, but the second sensing module 5 does, it means that when the second micro switch 51 is triggered first, the tamping cylinder assembly 3 has already moved into position. However, the reaction force of the coffee powder in the receiving cylinder assembly 2 on the tamping cylinder assembly 3 does not cause the extraction sleeve 31 to rise to a sufficient position distance, and the first micro switch 41 is not triggered. At this time, it proves that the amount of coffee powder in the receiving cylinder assembly 2 is insufficient or lacks coffee powder, and it is determined that the amount of raw materials is insufficient.

[0048] Specifically, the determination method in this embodiment can effectively detect whether the amount of coffee powder in the powder receiving tube is appropriate, avoiding the problem of coffee being too bitter or too acidic due to excessive or insufficient extraction.

[0049] The powder pressing cylinder assembly 3 in this embodiment is fixed in the following way:

[0050] The powder pressing cylinder assembly 3 is fixed to the first guide groove 11 of the bracket 1 and the slide groove of the bracket cover 17 by two connecting blocks 322. The rotating shaft 91 fixes two sliders 92, which are fixed to the second guide groove 323 of the extraction head 32. The two outwardly protruding shafts of the rotating shaft 91 are inserted into the shaft holes of the bracket 1 and the bracket cover 17. The upper end of the rotating shaft 40 is restricted to its lower movement space by the limiting post 18 of the bracket 1. The output gear 8 and the rotating shaft 91 are fixed to the bracket 1 on one side by screws. The bracket cover 17 and the bracket 1 are fixed together by screws.

[0051] The second micro switch 51 is mounted on the bracket 1 and fixed with screws. The drive motor 7 drives the output gear 8 to rotate, and the output gear 8 will trigger the second micro switch 51.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0053] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0054] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0055] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0056] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An extraction device, characterized in that, The utility model relates to a kind of powder extraction device, including: Support (1); Powder receiving cylinder assembly (2) is connected with the support (1), and the raw material is used to hold in the powder receiving cylinder assembly (2); Powder cylinder assembly (3) is connected with the support (1), and the powder cylinder assembly (3) includes extraction sleeve (31) and extraction head (32);The extraction sleeve (31) is movably arranged to extrude the raw material in the powder receiving cylinder assembly (2);Extraction passage (311) is provided in the extraction sleeve (31) for the raw material to enter the extraction sleeve (31);When the extraction sleeve (31) extrudes the raw material, the extraction head (32) is movably arranged opposite the extraction sleeve (31); First induction module (4), the first induction module (4) is used to sense the position of the extraction sleeve (31); Second induction module (5), the second induction module (5) is used to sense the stroke of the extraction head (32); Moving part (6), the moving part (6) is connected with the extraction sleeve (31);The first induction module (4) includes first microswitch (41) arranged on the support (1);The moving part (6) is correspondingly arranged with the first microswitch (41), so that the extraction sleeve (31) drives the moving part (6) to move to first preset position, to trigger the first microswitch (41); Driving motor (7), driving gear is arranged on the output shaft of the driving motor (7); Output gear (8), the output gear (8) is engaged with the driving gear, to drive the powder cylinder assembly (3) to move by driving the output gear (8) to rotate; The extraction head (32) includes slide rod (321) inserted in the extraction passage (311), and the slide rod (321) is movably arranged in the extraction passage (311);First sealing ring (33) is arranged between the slide rod (321) and the extraction passage (311); The extraction sleeve (31) includes first installation groove (313) and second installation groove (314) arranged at intervals;First elastic member (315) is arranged in the first installation groove (313), one end of the first elastic member (315) is connected with the extraction sleeve (31), and the other end of the first elastic member (315) is connected with the extraction head (32);Second elastic member (316) is arranged in the second installation groove (314), one end of the second elastic member (316) is connected with the extraction sleeve (31), and the other end of the second elastic member (316) is connected with the extraction head (32);The moving part (6) is located between the first elastic member (315) and the second elastic member (316); Wherein, the second induction module (5) includes second microswitch (51), the second microswitch (51) is correspondingly arranged with the output gear (8), to trigger the second microswitch (51) by driving the output gear (8) to rotate to second preset position.

2. The extraction device of claim 1, wherein The extraction channel (311) comprises a first extraction channel (3111) and a second extraction channel (3112) arranged in a spaced manner, the slide rod (321) comprises a first slide rod (3211) inserted into the first extraction channel (3111) and a second slide rod (3212) inserted into the second extraction channel (3112); the moving part (6) is arranged between the first slide rod (3211) and the second slide rod (3212).

3. The extraction device of claim 1, wherein, The bracket (1) is provided with a first guide groove (11) extending along the moving direction of the extraction head (32), and the extraction head (32) is provided with a connecting block (322) movably arranged in the first guide groove (11).

4. The extraction device of claim 3, wherein The extraction device further comprises a rotating part (9), the rotating part (9) comprises: a rotating shaft (91), the output gear (8) is provided with a connecting shaft (81), the connecting shaft (81) penetrates through the bracket (1) and is connected with the rotating shaft (91); a sliding block (92) arranged in a spaced manner with the rotating shaft (91); the extraction head (32) is provided with a second guide groove (323), and the sliding block (92) is movably arranged in the second guide groove (323) to drive the extraction head (32) to move by driving the rotating part (9) to rotate.

5. The extraction device according to claim 1, wherein the powder receiving cylinder assembly (2) comprises a containing cavity (21) for containing the raw material, the containing cavity (21) is a cylindrical structure, the extraction sleeve (31) has a cylindrical extrusion shell (317), the extrusion shell (317) is sleeved with a second sealing ring (318), and the second sealing ring (318) abuts against the inner wall of the containing cavity (21); and / or the opening of the extraction channel (311) is provided with a filter screen (319) for plugging the extraction channel (311), and the filter screen (319) is provided with an extraction hole penetrating through the filter screen (319).

6. A coffee maker comprising an extraction device, characterized in that, The extraction device is the extraction device according to any one of claims 1 to 5.

7. A determination method suitable for use with the extraction device of any one of claims 1 to 5, characterized in that, The determination method comprises: driving the extraction head (32) of the extraction device to move and driving the extraction sleeve (31) to extrude the raw material in the powder receiving cylinder assembly (2); if the first sensing module (4) and the second sensing module (5) both receive signals, it is determined that the amount of the raw material meets the requirements; if the first sensing module (4) receives a signal and the second sensing module (5) does not receive a signal, it is determined that the amount of the raw material exceeds the standard; if the first sensing module (4) does not receive a signal and the second sensing module (5) receives a signal, it is determined that the amount of the raw material is insufficient.

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