Brewing structure and beverage machine

Abstract

The invention discloses a brewing structure and a beverage machine. The brewing structure comprises a brewing cylinder, an upper piston structure, a lower piston structure and a material uniformizing structure; the upper piston structure and the lower piston structure are arranged at the two ends of the brewing cylinder in the axial direction of the brewing cylinder respectively, and at least one of the upper piston structure and the lower piston structure is movably arranged so that the upper piston structure and the lower piston structure can get close to each other and get away from each other. The material uniformizing structure has a first working state that the material uniformizing structure extends into the brewing cylinder, and when the material uniformizing structure is in the first working state, powder can be evenly laid on the lower piston structure through the material uniformizing structure. According to the technical scheme, powder can be evenly laid in the brewing cylinder under the action of the material uniformizing structure, when the powder is pressed by the upper piston structure and the lower piston structure, the thickness of formed pressed powder is more uniform, the contact effect of hot water and all positions of the pressed powder is more consistent in the extraction process, and therefore the extraction quality is better, and the extraction efficiency is improved. The prepared beverage is better in taste, and the use experience feeling can be better improved.

Description

Technical Field

[0001] The present invention relates to the technical field of beverage preparation equipment, and in particular to a brewing structure and a beverage machine. Background Art

[0002] Beverage machines, such as coffee machines, can extract coffee through a brewing cylinder. During the brewing process, the brewing cylinder receives the ground coffee powder at the powder receiving position, and injects hot water at the brewing position so that the hot water and the coffee powder are fully in contact. The coffee powder is pressurized and extracted at high temperature by using the brewing cylinder and the piston assembly. In this process, soluble substances in the coffee powder, such as caffeine, sugars, fats and acids, will dissolve in the water, making the coffee taste better. After the coffee beans are ground into powder, the freshly ground coffee machine needs to transfer them to the brewing cylinder. When the coffee powder is loaded into the brewing cylinder, the distribution of the coffee powder in the brewing cylinder is random, that is, it will not be evenly laid on the piston disk of the lower piston structure. In particular, when the coffee powder falls from a high place, the coffee powder will form a piled hill. When the coffee powder is unevenly distributed, squeezing and brewing will cause a channel effect, affecting the extraction quality. Summary of the invention

[0003] In order to solve the above technical problems, the main purpose of the present invention is to provide a brewing structure and a beverage machine, aiming to solve the problem that when the traditional brewing structure is brewing and extracting, the powder is unevenly distributed in the brewing cylinder, which will cause a channel effect and affect the extraction quality.

[0004] In order to achieve the above object, the present invention provides a brewing structure, comprising:

[0005] Brewing cylinder;

[0006] An upper piston structure and a lower piston structure are respectively arranged at two ends of the brewing cylinder along the axial direction thereof, and at least one of the upper piston structure and the lower piston structure is movably arranged so that the upper piston structure and the lower piston structure can approach and move away from each other in the brewing cylinder;

[0007] The material mixing structure has a first working state of extending into the brewing cylinder, and when in the first working state, the material mixing structure can make the powder material evenly spread on the lower piston structure.

[0008] Optionally, the material mixing structure is arranged on the lower piston structure; and / or,

[0009] The material leveling structure is arranged on the upper piston structure; or,

[0010] The material mixing structure is arranged on the brewing cylinder.

[0011] Optionally, the material mixing structure is arranged on the lower piston structure, and the lower piston structure can rotate relative to the brewing cylinder; or,

[0012] The screed structure is rotatable relative to the lower piston structure.

[0013] Optionally, the material mixing structure is arranged on the upper piston structure, and the upper piston structure can rotate relative to the brewing cylinder; or,

[0014] The screed structure is rotatable relative to the upper piston structure.

[0015] Optionally, a brewing space is formed between the upper piston structure and the lower piston structure;

[0016] When in the first working state, at least a portion of the material mixing structure extends into the brewing space; the material mixing structure also has a second working state where it is outside the brewing space.

[0017] Optionally, when in the first working state, the upper piston structure and the lower piston structure are located away from each other; when switching from the first working state to the second working state, the upper piston structure and the lower piston structure are located close to each other.

[0018] Optionally, the material-splitting structure has a telescopic movable stroke.

[0019] Optionally, a brewing space is formed between the upper piston structure and the lower piston structure;

[0020] The material mixing structure includes a plurality of material mixing needles, wherein the plurality of material mixing needles have a first working state in which they are at least partially extended into the brewing space, and a second working state in which they are retracted outside the brewing space.

[0021] Optionally, when the upper piston structure and the lower piston structure are close to each other, the material mixing needle can be switched from the first working state to the second working state.

[0022] Optionally, the lower piston structure is rotatably disposed on the brewing cylinder, and a plurality of the material mixing needles are disposed on the lower piston structure.

[0023] Optionally, the lower piston structure includes a lower piston rod and a lower piston disc arranged at one end of the lower piston rod, and a plurality of the material mixing needles are arranged on the lower piston disc.

[0024] Optionally, the lower piston structure further includes a lower receiving plate and a lower supporting rod connected to the lower receiving plate, the lower receiving plate is arranged in the middle of the brewing chamber, and the lower receiving plate is provided with a plurality of first through holes, the plurality of first through holes are arranged in one-to-one correspondence with the plurality of material mixing needles, and the lower supporting rod is connected to the brewing cylinder;

[0025] When in the first working state, the multiple material mixing needles are correspondingly inserted into the multiple first through holes and protrude from the side of the lower receiving plate facing the upper piston structure; when in the second working state, the multiple material mixing needles are correspondingly retracted into the multiple first through holes.

[0026] Optionally, the lower piston structure further comprises a first elastic telescopic member, wherein the first elastic telescopic member connects the lower piston disc and the lower receiving plate;

[0027] Under the action of the elastic restoring force of the first elastic telescopic member, the plurality of material-splitting needles can be automatically switched from the first working state to the second working state.

[0028] Optionally, the upper piston structure is rotatably disposed on the brewing cylinder, and a plurality of the material mixing needles are disposed on the upper piston structure.

[0029] Optionally, the upper piston structure includes an upper piston rod, an upper piston disc provided at one end of the upper piston rod, an upper receiving plate, and an upper support rod connected to the upper receiving plate, the upper piston disc is located below the upper receiving plate and can move relative to the upper receiving plate, a plurality of material sparging needles are provided on the upper receiving plate, a plurality of second through holes are provided on the upper piston disc, and the plurality of second through holes are provided in a one-to-one correspondence with the plurality of material sparging needles;

[0030] When in the first working state, the upper piston disc and the upper receiving plate are in contact with each other, and the plurality of material mixing needles are respectively inserted into the plurality of second through holes and protrude from the side of the upper piston disc facing the lower piston structure; when in the second working state, the upper piston disc is away from the upper receiving plate, and the plurality of material mixing needles are respectively retracted into the plurality of second through holes.

[0031] Optionally, the upper piston structure further comprises a second elastic telescopic member, wherein the second elastic telescopic member connects the upper receiving plate and the upper piston disc;

[0032] Under the elastic restoring force of the second elastic telescopic member, the plurality of material-splitting needles can be automatically switched from the first working state to the second working state.

[0033] The present invention also provides a brewing structure, comprising:

[0034] The brewing tank has at least one opening open to the outside;

[0035] An upper piston structure and a lower piston structure, at least one of which can be separated from the opening of the brewing cylinder, and the upper piston structure and / or the lower piston structure have a moving stroke of approaching and moving away from each other in the brewing cylinder;

[0036] The material mixing structure is at least arranged on the upper piston structure or the lower piston structure with a larger movable stroke, and at least part of the material mixing structure can extend into the brewing cylinder to be located between the upper piston structure and the lower piston structure.

[0037] Optionally, when the upper piston structure and the lower piston structure are arranged opposite to each other in the brewing cylinder, a brewing space is formed therebetween;

[0038] The upper piston structure has a powder receiving state separated from the brewing cylinder, and when in the powder receiving state, the material mixing structure is located outside the brewing space.

[0039] Optionally, when the powder receiving is completed and the upper piston structure moves to the opening, at least a portion of the material mixing structure may extend into the brewing space and continuously increase the length of the structure extending into the brewing space.

[0040] The present invention also provides a brewing structure, comprising:

[0041] Brewing cylinder;

[0042] At least one piston structure is movably disposed in the brewing cylinder and encloses the brewing cylinder to form a brewing space;

[0043] a material mixing structure, which is arranged on at least one of the piston structures and comprises a material mixing needle which can pass through the corresponding piston structure and extend into the brewing space;

[0044] The piston structure has a first working state and a second working state. The material mixing needle extends into the brewing space in the first working state and exits the brewing space in the second working state.

[0045] Optionally, two piston structures are provided, including an upper piston structure and a lower piston structure which are arranged opposite to each other, and when the upper piston structure and the lower piston structure are in a second working state close to each other, the material mixing needle does not extend into the brewing space.

[0046] Optionally, two piston structures are provided, including an upper piston structure and a lower piston structure which are arranged opposite to each other. When the upper piston structure and the lower piston structure are in a first working state which are relatively far apart, the material mixing needle at least partially extends into the brewing space.

[0047] Optionally, at least one of the piston structures is provided with an opening for the material mixing needle to pass through, and in the second working state, the material mixing needle is retracted in the opening of the piston structure and seals the opening.

[0048] Optionally, each of the piston structures comprises a piston rod and a piston disc arranged at the end of the piston rod, wherein the piston disc is arranged at the end of the piston rod and at least partially extends into the brewing cylinder;

[0049] The piston rod has a reciprocating stroke along the axial direction of the brewing cylinder and a rotating stroke along its central axis. The material mixing structure is arranged on the piston disc. When the piston rod moves, the piston disc and the material mixing structure are driven to move together.

[0050] Optionally, at least one of the piston structures is configured as a lower piston structure, and the material mixing structure is disposed on the lower piston structure, wherein the lower piston structure moves back and forth along the axial direction of the brewing cylinder, and can drive the material mixing structure to rotate forward and reversely.

[0051] Optionally, the material mixing needle extends into the brewing space along the axial direction of the brewing cylinder, and the length of the material mixing needle extending into the brewing space is greater than 1 / 3 of the length of the brewing cylinder and less than 2 / 3 of the length of the brewing cylinder; and / or,

[0052] The width of the area occupied by the mixing needle in the brewing space is greater than 1 / 2 of the width of the brewing space.

[0053] A beverage machine comprises the above brewing structure.

[0054] The technical solution provided by the present invention has the following beneficial effects:

[0055] The brewing structure provided by the present invention comprises a brewing cylinder, an upper piston structure, a lower piston structure and a material mixing structure, wherein the upper piston structure and the lower piston structure are respectively arranged at the two ends of the brewing cylinder along the axial direction thereof, so that the upper piston structure, the lower piston structure and the brewing cylinder can be enclosed together to form a brewing space, and the brewing space can be used for powder material to be accommodated therein, and at least one of the upper piston structure and the lower piston structure is movably arranged, so that the upper piston structure and the lower piston structure can approach and move away from each other, and the powder material can be pressurized and extracted when they are close to each other; and the material mixing structure extends into the brewing cylinder, and the powder material can be evenly laid in the brewing cylinder under the action of the material mixing structure, and when the upper piston structure and the lower piston structure press the powder material, the thickness of the formed powder cake is more uniform, and then during extraction, the contact effect between the hot water and the powder cake at various locations is more consistent, so that the extraction quality is better, the taste of the produced beverage is better, and the user experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0057] Figure 1 A schematic structural diagram of an embodiment of a brewing structure provided by the present invention (in the second working state, and the material mixing structure is not stirring);

[0058] Figure 2 for Figure 1 A schematic structural diagram of the brewing structure (in the first working state, and the material mixing structure is not stirring);

[0059] Figure 3 for Figure 1 A schematic diagram of the structure after the brewing structure (being in the first working state and the material mixing structure is stirring) is described;

[0060] Figure 4 for Figure 1 A schematic diagram of the structure of the brewing structure (in the second working state and after pressing is completed);

[0061] Figure 5 for Figure 1 A schematic diagram of the structure of the partial bubble structure (for connecting materials);

[0062] Figure 6 It is a structural schematic diagram of another embodiment of a brewing structure provided by the present invention (in a first working state, and the material mixing structure is not stirring).

[0063] Description of Figure Numbers:

[0064] 100-brewing structure; 1-brewing cylinder; 2-upper piston structure; 21-upper piston rod; 22-upper piston disc; 23-upper receiving plate; 3-lower piston structure; 31-lower piston rod; 32-lower piston disc; 33-lower receiving plate; 4-mixing structure; 41-mixing needle; 200-coffee powder.

[0065] The realization of the purpose, functional characteristics and excellent effects of the present invention will be further described below in conjunction with specific embodiments and drawings. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0068] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0069] The present invention provides a brewing structure 100, which is applicable to a beverage machine, and the brewing structure 100 is used to brew and extract powder to obtain a beverage. The beverage machine can be a coffee machine, a soybean milk machine, a juice machine, etc. In the following, for the convenience of description, the brewing structure 100 is used for a coffee machine as an example, and other devices can refer to the adaptability implementation.

[0070] Specifically, see Figures 1 to 3 In the present embodiment, the brewing structure 100 comprises a brewing cylinder 1, an upper piston structure 2, a lower piston structure 3 and a material mixing structure 4; the upper piston structure 2 and the lower piston structure 3 are respectively arranged at the two ends of the brewing cylinder 1 along its axial direction, and at least one of the upper piston structure 2 and the lower piston structure 3 can be movably arranged in the brewing cylinder 1, so that the upper piston structure 2 and the lower piston structure 3 can approach and move away from each other in the brewing cylinder 1; the material mixing structure 4 has a first working state extending into the brewing cylinder 1, and when in the first working state, the material mixing structure 4 can make the powder accumulated on the lower piston structure 3 evenly laid on the lower piston structure 3.

[0071] In the present embodiment, the upper piston structure 2 and the lower piston structure 3 are respectively arranged at the two ends of the brewing cylinder 1 along its axial direction, so that the upper piston structure 2, the lower piston structure 3 and the brewing cylinder 1 can jointly enclose a brewing space, and the brewing space can be used for powder to be accommodated therein, and at least one of the upper piston structure 2 and the lower piston structure 3 is movably arranged, so that the upper piston structure 2 and the lower piston structure 3 can approach and move away from each other, and the powder can be pressurized and extracted when they are close to each other; and the material mixing structure 4 extends into the brewing cylinder 1, and under the action of the material mixing structure 4, the powder can be evenly and loosely laid on the lower piston structure 3 in the brewing cylinder 1, and when the upper piston structure 2 and the lower piston structure 3 press the powder, the thickness of the powder cake formed is more uniform, and then during extraction, the contact effect between the hot water and the powder cake is more consistent, so the extraction quality is better, the taste of the produced beverage is better, and the user experience can be improved.

[0072] Among them, the brewing cylinder 1 is roughly cylindrical with openings at both ends. When the brewing structure 100 is used normally, the axial direction of the brewing cylinder 1 is set along the up and down directions, and the two openings of the brewing cylinder 1 are respectively set upward and downward. The upper piston structure 2 is correspondingly arranged at the upper end opening of the brewing cylinder 1, and the lower piston structure 3 is correspondingly arranged at the lower end opening of the brewing cylinder 1. By moving at least one of the upper piston structure 2 and the lower piston structure 3, the brewing cylinder 1 can be opened, so that coffee powder 200 can be added into the brewing cylinder 1.

[0073] Preferably, the upper piston structure 2 can be separated from the upper opening of the brewing cylinder 1, so that the coffee powder 200 can fall directly into the brewing cylinder 1 through the upper opening by gravity, and the lower piston structure 3 can be set to be separated from or not separated from the brewing cylinder 1 according to technical needs.

[0074] Preferably, the upper piston structure 2 and the lower piston structure 3 are both movably arranged so as to be able to move relative to and reversely along the axial direction of the brewing cylinder 1. Figure 5 As shown, the upper piston structure 2 is first moved out of the brewing cylinder 1 to open the upper end of the brewing cylinder 1. At this time, the brewing cylinder 1 can receive coffee powder 200. After receiving the coffee powder 200, the upper piston structure 2 is moved back to re-close the upper end opening of the brewing cylinder 1. The coffee powder 200 is then stirred by the material mixing structure 4 so that the coffee powder 200 can be evenly laid on the lower piston structure 3. Then, the lower piston structure 3 and the upper piston structure 2 are moved simultaneously or successively so that the two piston structures can be close to each other to press the coffee powder 200, so that the formed coffee powder cake is more even.

[0075] In one embodiment, in combination Figures 1 to 4As shown, the material mixing structure 4 can be arranged on the lower piston structure 3, and the coffee powder 200 falling on the lower piston structure 3 can be stirred by the movement of the material mixing structure 4, so that the coffee powder 200 is evenly spread. Figure 6 As shown in the figure, the material mixing structure 4 can also be arranged on the upper piston structure 2. When the upper piston structure 2 approaches the lower piston structure 3, the coffee powder 200 on the lower piston structure 3 is stirred by the material mixing structure 4, so that the coffee powder 200 can be evenly distributed on the lower piston structure 3. Of course, in another embodiment, the material mixing structure 4 can be evenly arranged on the upper piston structure 2 and the lower piston structure 3, and the upper and lower material mixing structures 4 can cooperate and move to achieve even distribution of the coffee powder 200.

[0076] In another embodiment, the material mixing structure 4 may be provided on the brewing cylinder 1. For example, the material mixing structure 4 may be provided on the peripheral side wall of the brewing cylinder 1, and the coffee powder 200 in the brewing cylinder 1 is pushed to move by the telescopic movement and / or rotation and / or swing of the material mixing structure 4, so that the coffee powder 200 is evenly distributed in the brewing cylinder 1.

[0077] Among them, when the material mixing structure 4 is arranged on the lower piston structure 3, the lower piston structure 3 can rotate relative to the brewing cylinder 1. Through the rotation of the lower piston structure 3, the material mixing structure 4 is driven to rotate together, thereby stirring the coffee powder 200, so that the coffee powder 200 is more uniform in the brewing cylinder 1.

[0078] In another embodiment, when the material mixing structure 4 is disposed on the upper piston structure 2, the upper piston structure 2 can rotate relative to the brewing cylinder 1. The rotation of the upper piston structure 2 drives the material mixing structure 4 to rotate together, thereby stirring the coffee powder 200, so that the coffee powder 200 is more uniform in the brewing cylinder 1.

[0079] Combination Figures 1 to 3 As shown, before the upper piston structure 2 and the lower piston structure 3 are not pressed together with the coffee powder 200, the upper piston structure 2 and the lower piston structure 3 are spaced apart in the up-down direction in the brewing cylinder 1, so that a brewing space is formed between the upper piston structure 2 and the lower piston structure 3; when the coffee powder 200 falls into the brewing cylinder and is in a powder receiving state, the material mixing structure 4 can be selected to at least partially extend into the brewing space or not extend into the brewing space at all; when in the first working state, at least part of the material mixing structure 4 extends into the brewing space and continuously increases the length of the material mixing structure 4 extending into the brewing cylinder; the material mixing structure 4 also has a second working state outside the brewing space, and in the second working state, the material mixing structure 4 will not affect the pressing effect of the upper piston structure 2 and the lower piston structure 3, so that the coffee powder cake is more even after pressing.

[0080] Moreover, in the first working state, the upper piston structure 2 and the lower piston structure 3 are located away from each other, so that the material-splitting structure 4 has enough travel space to perform material-splitting processing. Figure 4 As shown in , when switching from the first working state to the second working state, the upper piston structure 2 and the lower piston structure 3 are in close positions to each other, so that when pressing the coffee powder 200, the upper piston structure 2 and the lower piston structure 3 can be closer to each other, thereby achieving a better pressing effect.

[0081] It is understandable that the material mixing structure 4 is not only arranged in various positions, but also in many specific arrangements. For example, the material mixing structure 4 can be arranged in a rotating manner in the brewing cylinder 1, or the material mixing structure 4 can be arranged to move back and forth in a straight line to extend into and out of the brewing space during the rotation process, or the material mixing structure 4 can be arranged in a swinging manner to repeatedly pull the coffee powder 200 so that the coffee powder 200 is evenly distributed in the brewing cylinder 1.

[0082] In one embodiment, the material mixing structure 4 has a telescopic travel. Specifically, the material mixing structure 4 includes a material mixing needle 41 which is telescopically arranged on the upper piston structure 2 or the lower piston structure 3. The material mixing needle 41 has a first working state in which at least part of it is extended into the brewing space, and a second working state in which it is retracted outside the brewing space. In the first working state, the material mixing needle 41 is arranged in an extended state, and at least part of the material mixing needle 41 is located between the lower piston structure 3 and the upper piston structure 2. By driving the upper piston structure 2 or the lower piston structure 3 to rotate, the material mixing needle 41 is driven to rotate, and the coffee powder 200 is stirred by the rotation of the material mixing needle 41, so that the coffee powder 200 is more evenly distributed in the brewing cylinder 1.

[0083] Preferably, each material mixing needle 41 may include multiple syringe segments, which are sequentially connected with each other. Along the axial direction of the brewing cylinder 1 and between two adjacent syringe segments, the syringe segment at the upper end is sleeved on the inner side of the syringe segment at the lower end. By adjusting the sleeve connection amount between the multiple syringe segments, the extension and retraction of the material mixing needle 41 can be achieved.

[0084] Further preferably, there are multiple mixing needles 41, and the multiple mixing needles 41 are arranged at intervals. Among them, each mixing needle 41 is relatively thin, and is extended along the axial direction of the brewing cylinder 1. The multiple mixing needles 41 are evenly distributed on the lower piston structure 3. When the lower piston structure 3 rotates relative to the brewing cylinder 1, the multiple mixing needles 41 are stirred at the same time, so that the coffee powder 200 can evenly pass through the multiple mixing needles 41, so that the mixing effect is better and the mixing efficiency is higher.

[0085] It can be understood that the material-splitting needle 41 can be moved telescopically under the driving action of a driving component, or the material-splitting needle 41 can be moved telescopically passively under the action of an external force or other components.

[0086] In another embodiment, the material-splitting needle 41 may not be retractable, but may be driven to move by other components to achieve switching between the two states. Specifically, when the upper piston structure 2 and the lower piston structure 3 are close to each other, the material-splitting needle 41 may be switched from the first working state to the second working state. That is, when the material-splitting needle 41 is arranged on the lower piston structure 3, as the distance between the upper piston structure 2 and the lower piston structure 3 gradually decreases, the material-splitting needle 41 is driven to move under the pressure of the upper piston structure 2 to shrink in the lower piston structure 3. When the material-splitting needle 41 is arranged on the upper piston structure 2, as the distance between the upper piston structure 2 and the lower piston structure 3 gradually decreases, the material-splitting needle 41 is driven to move under the pressure of the lower piston structure 3 to shrink in the upper piston structure 2.

[0087] Specifically, for the lower piston structure 3, combined with Figures 1 to 3 As shown, the lower piston structure 3 may include a lower piston rod 31, and a lower piston disc 32 disposed at one end of the lower piston rod 31, and a plurality of material-scratching needles 41 are disposed on the lower piston disc 32. The lower piston structure 3 also includes a lower receiving plate 33 and a lower support rod connected to the lower receiving plate 33, the lower receiving plate 33 is disposed in the middle of the brewing cylinder 1, and a plurality of first through holes are disposed on the lower receiving plate 33, and the plurality of first through holes are disposed one-to-one with the plurality of material-scratching needles 41, and the lower support rod is connected to the brewing cylinder 1. When in the first working state, the plurality of material-scratching needles 41 are disposed one-to-one in the plurality of first through holes and protrude from the side of the lower receiving plate 33 facing the upper piston structure 2; when in the second working state, the plurality of material-scratching needles 41 are contracted one-to-one in the plurality of first through holes. The shape of the lower piston disc 32 is adapted to the inner shape of the brewing cylinder 1, so that the peripheral side of the lower piston disc 32 is in close contact with the inner wall of the brewing cylinder 1 to avoid leakage. The lower piston rod 31 is connected to the middle part of the lower piston disc 32 and is coaxially arranged with the brewing cylinder 1. At the same time, the material mixing needle 41 is in the first through hole and also covers the first through hole, thereby preventing liquid from flowing out of the first through hole.

[0088] Moreover, the lower piston structure 3 also includes a first elastic telescopic member, which connects the lower piston disc 32 and the lower receiving plate 33; under the elastic restoring force of the first elastic telescopic member, the multiple material mixing needles 41 can automatically switch from the first working state to the second working state. Among them, the first elastic telescopic member can be set as a telescopic spring. In the second working state, the lower piston disc 32 is in a position close to the lower end opening of the brewing cylinder 1, and the first elastic telescopic member is in a naturally extended state at this time; when the lower piston rod 31 is driven to move by an external force or the lower driving mechanism, so that the lower piston disc 32 can move toward the direction close to the lower receiving plate 33, the first elastic telescopic member is gradually compressed, and the multiple material mixing needles 41 on the lower piston disc 32 gradually extend from the multiple first through holes on the lower receiving plate 33 to extend into the brewing space and be in the first working state, thereby stirring the coffee powder 200 located in the brewing space; when the stirring is completed, and the external force or the lower driving mechanism cancels the force applied to the lower piston rod 31, under the action of the elastic restoring force of the first elastic telescopic member, the lower piston disc 32 and the lower piston rod 31 can automatically move downward to restore to the second working state.

[0089] In another embodiment, the upper piston structure 2 is rotatably disposed on the brewing cylinder 1. When a plurality of material mixing needles 41 are disposed on the upper piston structure 2, preferably, in combination with Figure 6 As shown, the upper piston structure 2 includes an upper piston rod 21, an upper piston disc 22 arranged at one end of the upper piston rod 21, an upper receiving plate 23, and an upper support rod connected to the upper receiving plate 23. The upper piston disc 22 is located below the upper receiving plate 23 and can move relative to the upper receiving plate 23. A plurality of material-leveling needles 41 are arranged on the upper receiving plate 23. A plurality of second through holes are arranged on the upper piston disc 22. The plurality of second through holes are arranged one-to-one with the plurality of material-leveling needles 41. When in the first working state, the upper piston disc 22 and the upper receiving plate 23 fit together, and the plurality of material-leveling needles 41 are arranged one-to-one in the plurality of second through holes and protrude from the side of the upper piston disc 22 facing the lower piston structure 3; when in the second working state, the upper piston disc 22 is away from the upper receiving plate 23, and the plurality of material-leveling needles 41 are contracted one-to-one in the plurality of second through holes. The shape of the upper piston disc 22 is adapted to the inner shape of the brewing cylinder 1, so that the circumference of the upper piston disc 22 is in close contact with the inner wall of the brewing cylinder 1 to avoid leakage. The upper piston rod 21 is connected to the middle part of the upper piston disc 22 and is coaxially arranged with the lower piston rod 31 and the brewing cylinder 1.

[0090] Moreover, the upper piston structure 2 also includes a second elastic telescopic member, which connects the upper receiving plate 23 and the upper piston disc 22; under the elastic restoring force of the second elastic telescopic member, the multiple material-splitting needles 41 can be automatically switched from the first working state to the second working state. The second elastic telescopic member can be set as a telescopic spring. In the first working state, the upper piston disc 22 is close to the upper receiving plate 23, and the second elastic telescopic member is in a natural extension state at this time; when the upper piston rod 21 is driven to move by an external force or an upper driving mechanism, so that the upper piston disc 22 can move toward the direction close to the lower piston disc 32 to press the coffee powder 200, the second elastic telescopic member is gradually stretched, and the multiple material-splitting needles 41 on the upper receiving plate 23 are gradually contracted in the multiple second through holes on the upper piston disc 22 to be in the second working state. When the pressing is completed and the external force or the upper driving mechanism cancels the force applied to the upper piston rod 21 , the upper piston plate 22 moves upward under the elastic restoring force of the second elastic telescopic member to return to the position of contacting the upper receiving plate 23 .

[0091] The present invention also provides a brewing structure 100, which includes a brewing cylinder 1, an upper piston structure 2, a lower piston structure 3 and a material mixing structure 4. It should be noted that the brewing cylinder 1, the upper piston structure 2, the lower piston structure 3 and the material mixing structure 4 in this specific embodiment can be the brewing cylinder 1, the upper piston structure 2, the lower piston structure 3 and the material mixing structure 4 in the above specific embodiment, or can be other brewing cylinders 1, upper piston structures 2, lower piston structures 3 and material mixing structures 4 different from the above specific embodiments. Specifically, in this embodiment, the brewing cylinder 1 has at least one opening open to the outside; the upper piston structure 2 and the lower piston structure 3, at least one of which can be separated from the opening of the brewing cylinder 1, and the upper piston structure 2 and / or the lower piston structure 3 have a moving stroke of approaching and moving away in the brewing cylinder 1; the material mixing structure 4 is at least arranged on the upper piston structure 2 and the lower piston structure 3, whichever has the larger moving stroke, and at least part of the material mixing structure 4 can extend into the brewing cylinder 1 to be located between the upper piston structure 2 and the lower piston structure 3. In this embodiment, the material-splitting structure 4 is disposed on a piston structure with a large movable stroke, so that the material-splitting structure 4 has sufficient movable space, thereby better improving the material-splitting effect.

[0092] Preferably, when the axial direction of the brewing cylinder 1 is arranged in the up-down direction, the opening of the brewing cylinder 1 is arranged upward, and the upper piston structure 2 has a powder receiving state separated from the opening of the brewing cylinder 1, so that the coffee powder 200 can fall directly into the brewing cylinder 1 through the upper opening by gravity. And when in the powder receiving state, the material mixing structure 4 can partially extend into the brewing space or be located outside the brewing space. The lower piston structure 3 can be set to be separated from the brewing cylinder 1 or not according to technical needs.

[0093] Furthermore, when the powder is received and the upper piston structure 2 moves to the opening, at least part of the material mixing structure 4 extends into the brewing space and continues to increase the length of the material mixing structure 4 extending into the brewing cylinder space, so that the material mixing structure 4 can drive the coffee powder 200 at each location to move when rotating, and the material mixing effect is better. After the material mixing structure 4 is completely moved into place, the material mixing structure 4 is controlled to stir for a certain period of time or the layout state of the coffee powder 200 in the brewing cylinder 1 is detected, and then the material mixing structure 4 is controlled to move out of the brewing space, and then the material pressing operation is performed by moving the upper piston structure 2 and the lower piston structure 3.

[0094] In one embodiment, the brewing structure 100 may also include a control device and a detection device. The control device is electrically connected to the detection device and a driving mechanism that drives the piston structure to move. The detection device is used to detect the distribution state of the coffee powder 200, for example, to obtain image information of the coffee powder 200 on the lower piston structure 3, and transmit the image information to the control device. The control device determines whether the distribution state of the coffee powder 200 is uniform. If it is uniform, the upper piston structure 2 and / or the lower piston structure 3 are controlled to move to perform a pressing operation. If it is not uniform, the material mixing structure 4 can be controlled to continue working until the coffee powder 200 is evenly distributed.

[0095] The present invention also provides a brewing structure 100, which includes a brewing cylinder 1, at least one piston structure and a material mixing structure 4. It should be noted that the brewing cylinder 1, the piston structure and the material mixing structure 4 in this specific embodiment can be the brewing cylinder 1, the piston structure and the material mixing structure 4 in the above-mentioned specific embodiment, or can be other brewing cylinders 1, piston structures and material mixing structures 4 different from the above-mentioned specific embodiments. Specifically, the brewing structure 100 includes a brewing cylinder 1, at least one piston structure and a material mixing structure 4, wherein at least one piston structure is movably arranged in the brewing cylinder 1, and a brewing space is enclosed with the brewing cylinder 1; the material mixing structure 4 is arranged in at least one of the piston structures, and includes a material mixing needle 41 that can pass through the corresponding piston structure and extend into the brewing space; wherein the piston structure has a first working state and a second working state, and the material mixing needle 41 extends into the brewing space in the first working state, and exits the brewing space in the second working state.

[0096] In the present embodiment, at least one piston structure is moved in the brewing structure 100 to achieve brewing and pressing of coffee powder, and a mixing needle 41 is arranged on one or more of the piston structures, so that after the coffee powder is received in the brewing cylinder 1, the mixing needle 41 is extended into the brewing space to stir the coffee powder 200, so that the coffee powder 200 can be evenly and loosely laid in the brewing cylinder 1; and after the stirring is completed, the mixing needle 41 can be withdrawn from the brewing space, and then the piston structure is used to perform the pressing operation, so that the pressed coffee powder cake is more uniform, so when extracting, the extraction quality is also higher.

[0097] Preferably, when there are two piston structures, including an upper piston structure 2 and a lower piston structure 3 which are arranged opposite to each other, when the upper piston structure 2 and the lower piston structure 3 are in a second working state close to each other, the material mixing needle 41 does not extend into the brewing space. At this time, the upper piston structure 2 and the lower piston structure 3 can be pressed together to withdraw the material mixing needle 41 from the brewing space, thereby avoiding interference between the material mixing needle 41 and the upper piston structure 2 or the lower piston structure 3, and better protecting the material mixing needle 41.

[0098] When the upper piston structure 2 and the lower piston structure 3 are in the first working state relatively far apart, the mixing needle at least partially extends into the brewing space. At this time, the brewing structure 100 is in a powder receiving state or a mixing state. Therefore, extending the mixing needle 41 into the brewing space can better stir the coffee powder 200 in the brewing space, so that the coffee powder 200 can be evenly spread on the lower piston structure 2.

[0099] Moreover, at least one piston structure is provided with an opening for the sparging needle 41 to pass through. Preferably, an opening can be provided on the piston structure corresponding to the sparging needle 41, and in the second working state, the sparging needle 41 is retracted in the opening of the piston structure and seals the opening to prevent coffee powder 200 from falling into the opening.

[0100] Furthermore, each piston structure includes a piston rod and a piston disk arranged at the end of the piston rod. The piston disk is arranged at the end of the piston rod and can at least partially extend into the brewing cylinder 1; the piston rod has a reciprocating stroke along the axial direction of the brewing cylinder, and a rotating stroke along its central axis. The material mixing structure is arranged on the piston disk. The piston rod moves, driving the piston disk and the material mixing structure 4 to move together. The movement of the piston rod can realize the movement of the material mixing needle 41.

[0101] Among them, the brewing structure 100 may also include a driving mechanism, which includes a linear driving motor that drives the piston rod to move axially back and forth, and a rotary motor that drives the piston rod to rotate. The linear driving motor drives the upper piston structure 2 and / or the lower piston structure 3 to move linearly, so as to drive the upper piston structure 2 and the lower piston structure 3 to approach or move away from each other, and drive the material mixing needle 41 to extend into or exit the brewing space; the rotary motor drives the upper piston structure 2 and / or the lower piston structure 3 to rotate, and drives the material mixing needle 41 to rotate together.

[0102] Moreover, preferably, when the material-scratching needle 41 is disposed on the lower piston structure 3, the lower piston structure 3 moves back and forth along the axial direction of the brewing cylinder 1, and the material-scratching structure 4 can be driven to rotate in both positive and negative directions. For example, when the lower piston structure 3 moves upward, the lower piston structure 3 rotates in the positive direction, driving the material-scratching needle 41 to rotate in the positive direction; when the lower piston structure 3 moves downward, the lower piston structure 3 rotates in the reverse direction, driving the material-scratching needle 41 to rotate in the reverse direction. By driving the lower piston structure 3 to move back and forth within a certain interval, and controlling the material-scratching needle 41 not to completely exit the brewing space and to continue to rotate in both positive and negative directions, the coffee powder 200 can be repeatedly stirred in both directions, so that the coffee powder 200 is fully mobilized and has better uniformity.

[0103] Preferably, the mixing needle 41 extends into the brewing space along the axial direction of the brewing cylinder 1, and the length of the mixing needle 41 extending into the brewing space is greater than 1 / 3 of the length of the brewing cylinder and less than 2 / 3 of the length of the brewing cylinder. The width of the area occupied by the mixing needle 41 in the brewing space is greater than 1 / 2 of the width of the brewing space. The area where the mixing needle 41 is located can cover the area where the coffee powder 200 is arranged as much as possible, so that the coffee powder 200 can be better stirred and the tiling efficiency of the coffee powder 200 is better. The length direction here refers to the axial direction along the brewing cylinder 1, and the width direction refers to the radial direction along the brewing cylinder 1.

[0104] The present invention also provides a beverage machine, which includes the above-mentioned brewing structure 100. The brewing structure 100 makes the powdered material more evenly distributed in the brewing cylinder 1 of the brewing structure 100. Therefore, when extracting, the extraction quality is higher, the taste of the beverage is better, and the user experience is further enhanced.

[0105] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A brewing structure, characterized in that: include: Brewing cylinder; An upper piston structure and a lower piston structure are respectively arranged at two ends of the brewing cylinder along the axial direction thereof, and at least one of the upper piston structure and the lower piston structure is movably arranged so that the upper piston structure and the lower piston structure can approach and move away from each other in the brewing cylinder; The material mixing structure has a first working state of extending into the brewing cylinder, and when in the first working state, the material mixing structure can make the powder material evenly spread on the lower piston structure.

2. The brewing structure according to claim 1, characterized in that: The material-splitting structure is arranged on the lower piston structure; and / or, The material leveling structure is arranged on the upper piston structure; or, The material mixing structure is arranged on the brewing cylinder.

3. The brewing structure according to claim 1, characterized in that: The material mixing structure is arranged on the lower piston structure, and the lower piston structure can rotate relative to the brewing cylinder; or, The screed structure is rotatable relative to the lower piston structure.

4. The brewing structure according to claim 1, characterized in that: The material mixing structure is arranged on the upper piston structure, and the upper piston structure can rotate relative to the brewing cylinder; or, The screed structure is rotatable relative to the upper piston structure.

5. The brewing structure according to claim 1, characterized in that: A brewing space is formed between the upper piston structure and the lower piston structure; When in the first working state, at least a portion of the material mixing structure extends into the brewing space; the material mixing structure also has a second working state where it is outside the brewing space.

6. The brewing structure according to claim 5, characterized in that: When in the first working state, the upper piston structure and the lower piston structure are located away from each other; when switching from the first working state to the second working state, the upper piston structure and the lower piston structure are located close to each other.

7. The brewing structure according to claim 1, characterized in that: The material-splitting structure has a telescopic movable stroke.

8. The brewing structure according to claim 1, characterized in that: A brewing space is formed between the upper piston structure and the lower piston structure; The material mixing structure includes a plurality of material mixing needles, wherein the plurality of material mixing needles have a first working state in which they are at least partially extended into the brewing space, and a second working state in which they are retracted outside the brewing space.

9. The brewing structure according to claim 8, characterized in that: When the upper piston structure and the lower piston structure are close to each other, the material mixing needle can be switched from the first working state to the second working state.

10. The brewing structure according to claim 8, characterized in that: The lower piston structure is rotatably arranged on the brewing cylinder, and a plurality of material mixing needles are arranged on the lower piston structure.

11. The brewing structure according to claim 9, characterized in that: The lower piston structure comprises a lower piston rod and a lower piston plate arranged at one end of the lower piston rod, and a plurality of material mixing needles are arranged on the lower piston plate.

12. The brewing structure according to claim 11, characterized in that: The lower piston structure further includes a lower receiving plate and a lower supporting rod connected to the lower receiving plate, wherein the lower receiving plate is arranged in the middle of the brewing chamber, and the lower receiving plate is provided with a plurality of first through holes, the plurality of first through holes are arranged in one-to-one correspondence with the plurality of material mixing needles, and the lower supporting rod is connected to the brewing cylinder; When in the first working state, the multiple material mixing needles are correspondingly inserted into the multiple first through holes and protrude from the side of the lower receiving plate facing the upper piston structure; when in the second working state, the multiple material mixing needles are correspondingly retracted into the multiple first through holes.

13. The brewing structure according to claim 12, characterized in that: The lower piston structure further comprises a first elastic telescopic member, wherein the first elastic telescopic member connects the lower piston disc and the lower receiving plate; Under the action of the elastic restoring force of the first elastic telescopic member, the plurality of material-splitting needles can be automatically switched from the first working state to the second working state.

14. The brewing structure according to claim 8, characterized in that: The upper piston structure is rotatably arranged on the brewing cylinder, and a plurality of material mixing needles are arranged on the upper piston structure.

15. The brewing structure according to claim 14, characterized in that: The upper piston structure includes an upper piston rod, an upper piston disc provided at one end of the upper piston rod, an upper receiving plate, and an upper support rod connected to the upper receiving plate, wherein the upper piston disc is located below the upper receiving plate and can move relative to the upper receiving plate, a plurality of material-splitting needles are provided on the upper receiving plate, a plurality of second through holes are provided on the upper piston disc, and the plurality of second through holes are provided in a one-to-one correspondence with the plurality of material-splitting needles; When in the first working state, the upper piston disc and the upper receiving plate are in contact with each other, and the plurality of material mixing needles are respectively inserted into the plurality of second through holes and protrude from the side of the upper piston disc facing the lower piston structure; when in the second working state, the upper piston disc is away from the upper receiving plate, and the plurality of material mixing needles are respectively retracted into the plurality of second through holes.

16. The brewing structure according to claim 15, characterized in that: The upper piston structure further comprises a second elastic telescopic member, wherein the second elastic telescopic member connects the upper receiving plate and the upper piston disc; Under the elastic restoring force of the second elastic telescopic member, the plurality of material-splitting needles can be automatically switched from the first working state to the second working state.

17. A brewing structure, characterized in that: include: The brewing tank has at least one opening open to the outside; An upper piston structure and a lower piston structure, at least one of which can be separated from the opening of the brewing cylinder, and the upper piston structure and / or the lower piston structure have a moving stroke of approaching and moving away from each other in the brewing cylinder; The material mixing structure is at least arranged on the upper piston structure or the lower piston structure with a larger movable stroke, and at least part of the material mixing structure can extend into the brewing cylinder to be located between the upper piston structure and the lower piston structure.

18. A brewing structure according to claim 17, characterized in that: When the upper piston structure and the lower piston structure are arranged opposite to each other in the brewing cylinder, a brewing space is formed between the two; The upper piston structure has a powder receiving state separated from the brewing cylinder, and when in the powder receiving state, the material mixing structure can partially extend into the brewing space or be located outside the brewing space.

19. A brewing structure according to claim 18, characterized in that: When the powder receiving is completed and the upper piston structure moves to the opening, at least a portion of the material mixing structure extends into the brewing space and continuously increases the length of the structure extending into the brewing space.

20. A brewing structure, characterized in that: include: Brewing cylinder; At least one piston structure is movably disposed in the brewing cylinder and encloses the brewing cylinder to form a brewing space; a material mixing structure, which is arranged on at least one of the piston structures and comprises a material mixing needle which can pass through the corresponding piston structure and extend into the brewing space; The piston structure has a first working state and a second working state. The material mixing needle extends into the brewing space in the first working state and exits the brewing space in the second working state.

21. A brewing structure as claimed in claim 20, characterized in that: The piston structures are provided with two, including an upper piston structure and a lower piston structure which are arranged opposite to each other. When the upper piston structure and the lower piston structure are in a second working state close to each other, the material mixing needle does not extend into the brewing space.

22. The brewing structure according to claim 20, characterized in that: The piston structures are provided with two, including an upper piston structure and a lower piston structure which are arranged opposite to each other. When the upper piston structure and the lower piston structure are in a first working state where they are relatively far apart, the material mixing needle at least partially extends into the brewing space.

23. The brewing structure according to claim 20, characterized in that: At least one of the piston structures is provided with an opening for the material mixing needle to pass through. In the second working state, the material mixing needle is retracted in the opening of the piston structure and seals the opening.

24. The brewing structure according to claim 20, characterized in that: Each of the piston structures comprises a piston rod and a piston disc arranged at the end of the piston rod, wherein the piston disc is arranged at the end of the piston rod and at least part of the piston disc can extend into the brewing cylinder; The piston rod has a reciprocating stroke along the axial direction of the brewing cylinder and a rotating stroke along its central axis. The material mixing structure is arranged on the piston disc. When the piston rod moves, the piston disc and the material mixing structure are driven to move together.

25. A brewing structure as claimed in claim 24, characterized in that: At least one of the piston structures is configured as a lower piston structure, and the material mixing structure is configured on the lower piston structure, wherein the lower piston structure reciprocates along the axial direction of the brewing cylinder to drive the material mixing structure to rotate forward and reversely.

26. The brewing structure according to claim 20, characterized in that: The material mixing needle extends into the brewing space along the axial direction of the brewing cylinder, and the length of the material mixing needle extending into the brewing space is greater than 1 / 3 of the length of the brewing cylinder and less than 2 / 3 of the length of the brewing cylinder; and / or, The width of the area occupied by the mixing needle in the brewing space is greater than 1 / 2 of the width of the brewing space.

27. A beverage machine, characterized in that: Comprising the brewing structure as claimed in any one of claims 1 to 26.

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