阅读说明：本技术 膜切割机构、胶囊和饮品机 (Membrane cutting mechanism, capsule and beverage machine ) 是由 朱国军 于 2018-06-12 设计创作，主要内容包括：本发明公开了一种膜切割机构、胶囊和饮品机,膜切割机构(100)包括本体(1)；支撑件(22),与本体连接；以及切割刀臂(23),连接于本体或支撑件上；其中,受压下移的本体能够通过支撑件的受压变形或移动而让切割刀臂接触需要切割的膜并对膜进行切割。本发明的膜切割机构利用胶囊内腔的流体压力,可在压力下促使其支撑件产生变形或移动以驱动切割刀臂接触需要切割的膜,并最终在该膜上产生移动切割,从而具有对胶囊的膜进行切割功能。形成的切口可更宽,有利于液体快速、大流量的流出,饮品线形更好,萃取更充分更香醇,用户满意度更佳。(The invention discloses a membrane cutting mechanism, a capsule and a beverage machine, wherein the membrane cutting mechanism (100) comprises a body (1); a support (22) connected to the body; and a cutter arm (23) connected to the body or the support; the body which is pressed and moved downwards can enable the cutting knife arm to contact the film to be cut and cut the film through the pressed deformation or movement of the supporting piece. The membrane cutting mechanism of the invention utilizes the fluid pressure in the inner cavity of the capsule, can cause the support piece to deform or move under the pressure to drive the cutting knife arm to contact the membrane to be cut and finally generate moving cutting on the membrane, thereby having the function of cutting the membrane of the capsule. The formed cut can be wider, which is beneficial to the rapid and large-flow outflow of liquid, the beverage has better line shape, the extraction is more sufficient and more mellow, and the user satisfaction is better.)

1. Film cutting mechanism, characterized in that the film cutting mechanism (100) comprises:

a body (1);

a support (22) connected to the body (1); and

a cutter arm (23) connected to the body (1) or the support (22);

the body (1) moving downwards under pressure can enable the cutter arm (23) to contact and cut a film to be cut through the pressure deformation or movement of the support piece (22).

2. The film cutting mechanism according to claim 1, wherein the cutter arm (23) and the support member (22) are integrally arranged to form a cutting member (2), the support member (22) is inclined downwards relative to a plane where the body (1) is located, the cutting member (2) further comprises a force arm support end (21) lower than the body (1), one end of the support member (22) far away from the body (1) is connected with one end of the force arm support end (21), the other end of the force arm support end (21) is connected with the cutter arm (23), and the cutter arm (23) is inclined upwards relative to a horizontal plane where the force arm support end (21) is located;

the body (1) moving downwards under pressure can push the moment arm supporting end (21) to move along a supporting surface (C) through the pressure deformation of the supporting piece (22), and the cutting part (231) at the tail end of the cutting knife arm (23) can perform moving cutting.

3. The film cutting mechanism according to claim 2, wherein the cutting member (2) is V-shaped, U-shaped or W-shaped; and/or the presence of a gas in the gas,

the cutting piece (2) extends outwards from the periphery of the body (1) in the radial direction; and/or the presence of a gas in the gas,

the cutting pieces (2) are multiple and arranged along the periphery of the body (1), and the number N1 of the cutting pieces (2) satisfies: n1 is more than 0 and less than or equal to 15, preferably 4 and less than or equal to N1 and less than or equal to 12; and/or the presence of a gas in the gas,

the force arm supporting end (21) and the connecting end of the supporting piece (22) and the body (1) are respectively provided with a structural weakening groove (24).

4. The film cutting mechanism according to claim 3, wherein the horizontal inclination (b) of the support (22) and/or the cutter arm (23) is not less than 30 ° and not more than 70 °.

5. The film cutting mechanism according to claim 2, wherein the cutting portion (231) comprises a cutting body with a sharp end facing upwards.

6. The film cutting mechanism according to claim 5, wherein the cutting portion (231) on each of the cutting members (2) comprises N2 cutting shapes and satisfies: 0 < N2 ≦ 10, preferably 0 < N2 ≦ 5.

7. The film cutting mechanism according to claim 6, characterized in that the cutting shapes are saw-toothed and the respective vertical inclinations (a) of the two side sharp edges (A) are not less than 5 ° and not more than 90 °, preferably not less than 20 ° and not more than 70 °.

8. The film cutting mechanism according to claim 1, wherein the body (1) has a disk shape, a circular ring shape, or a polygonal shape.

9. The film cutting mechanism according to any one of claims 1 to 8, wherein the body (1) is flat or in the shape of an upwardly convex arch.

10. The membrane cutting mechanism according to claim 2 or 3, characterized in that the membrane cutting mechanism (100) further comprises an outer edge filtering part arranged around the periphery of the body (1), and a plurality of filtering grooves (31) distributed at intervals along the circumferential direction are arranged in the outer edge filtering part in a penetrating manner.

11. The membrane cutting mechanism according to claim 10, characterized in that the membrane cutting mechanism (100) comprises a plurality of the cutting members (2) which radially outwardly protrude from the periphery of the body (1) and are circumferentially spaced, the outer rim filtering portion radially integrally protrudes from the periphery of the body (1) and comprises a plurality of filtering fans (3), each filtering fan (3) is provided with a plurality of the filtering grooves (31) which radially extend, and a plurality of the cutting members (2) and a plurality of the filtering fans (3) are circumferentially spaced and alternately arranged.

12. The membrane cutting mechanism according to claim 11, wherein the ratio between the radial length of the filter cells (31) and the outer diameter of the filter fan (3) is not less than 0.05 and not more than 0.25; and/or the presence of a gas in the gas,

the maximum groove width of the filter groove (31) is not less than 0.05mm and not more than 2 mm; and/or the presence of a gas in the gas,

the number N3 of the filter cells (31) provided on each filter fan (3) is not more than 30, preferably not more than 10.

13. Capsule comprising a capsule housing (4) having a capsule inlet (B1) and a capsule outlet (B2), a cover film (5) for covering the capsule inlet (B1) and a preservative film (6) arranged within the capsule housing (4), the preservative film (6) and the cover film (5) defining a cavity (D) for filling with a consumable, characterized in that the capsule (200) further comprises a film cutting mechanism (100) according to any one of claims 1 to 9, the film cutting mechanism (100) being arranged below the preservative film (6), the cutting section (231) being adapted to cut a linear cut in the preservative film (6).

14. Capsule according to claim 13, wherein the membrane cutting mechanism (100) is movably mounted at the bottom of the inner cavity of the capsule housing (4).

15. The capsule according to claim 13, wherein the capsule (200) comprises an outlet tapping structure (7) arranged below the preservative film (6) to guide fluid from the preservative film (6) to the capsule outlet (B2), wherein a cutting member supporting table (8) arranged in a circumferential direction is arranged radially outside the outlet tapping structure (7), the film cutting mechanism (100) is arranged above the outlet tapping structure (7), and a supporting surface (81) of the cutting member supporting table (8) is formed with the supporting surface (C) supporting the end of the force arm.

16. Capsule according to claim 15, wherein the support surface (C) is formed as a horizontal surface or as an upwardly sloping radially outward surface when the inner end of the support (22) is connected to the body (1); when the outer end of the supporting piece (22) is connected with the body (1), the supporting surface (C) is formed into a horizontal plane or a downward slope surface which is outward in the radial direction; wherein, the sloping surface inclination angle of the upper sloping surface and the lower sloping surface is not more than 20 degrees.

17. Capsule according to claim 15, characterized in that the membrane cutting mechanism (100) comprises a plurality of cutting members (2) projecting radially outwards from the periphery of the body (1) and arranged circumferentially at intervals, the inner peripheral wall of the capsule housing (4) being formed with a knife arm guiding surface (E) against which the cutting portion (231) of the cutting knife arm (23) abuts, the cutting portion (231) moving upwards along the knife arm guiding surface (E) and producing a deforming movement radially inwards during the pressing downward movement of the body (1).

18. Capsule according to claim 17, characterized in that the membrane cutting means (100) further comprise a plurality of filtering sectors (3) arranged at intervals around the periphery of the body (1), the filtering sectors (3) comprising a plurality of filtering channels (31) arranged throughout and distributed at intervals in the circumferential direction, the plurality of cutting members (2) and the plurality of filtering sectors (3) being arranged alternately at intervals in the circumferential direction.

19. Capsule according to claim 18, characterized in that in the downwards pressed state of the body (1) a filtration volume (F) is formed between the filtration fan (3) and the cutting member support (8), the fluid in the chamber (D) flowing in sequence through the cut-out in the plastic wrap (6), the filter cells (31) and the filtration volume (F) and entering the outlet drainage structure (7).

20. Capsule according to claim 19, characterized in that the bottom peripheral edge of the body (1) is formed with a filter fan bottom support (11) projecting downwards, said filter fan bottom support (11) pressing against the top surface of the outlet flow directing structure (7) in said pressed down condition.

21. Capsule according to claim 20, wherein the downward movement of the body (1) from the initial non-stressed state to the stressed downward movement is between 1mm and 10 mm.

22. Capsule according to claim 19, wherein the cutting member support table (8) has a table surface (81) not higher than the top surface of the outlet drainage structure (7); and/or

A cutting piece bottom supporting table (12) protruding downwards is formed on the periphery of the bottom surface of the body (1), and in the pressed downward moving state, the cutting piece bottom supporting table (12) is pressed against the top surface of the outlet drainage structure (7); and/or the presence of a gas in the gas,

in the uncompressed state of the body (1), the distance between the outer periphery of the filter fan (3) and the inner peripheral wall of the capsule housing (4) is not less than 0.05mm and not more than 3.5mm, and in the pressed downward state of the body (1), the distance between the outer periphery of the filter fan (3) and the inner peripheral wall of the capsule housing (4) is not more than 3.5 mm.

23. Capsule according to claim 19, wherein the cutting member support table (8) is formed with circumferential side ribs (82) on both circumferential sides of the cutting member (2), an overflow gap (83) communicating to the filtration volume (F) being formed between the radially outer end of the circumferential side ribs (82) and the inner circumferential wall of the capsule housing (4).

24. Capsule according to claim 23, wherein a flow barrier rib (84) is provided between the radially inner sides of the circumferential stop ribs (82).

25. Capsule according to claim 15, characterized in that the outlet drainage structure (7) comprises a plurality of concentric circles of labyrinth-like ribs (71) or in that the outlet drainage structure (7) comprises a plurality of slugging columns (72) arranged in such a way as to improve the fluid outflow performance.

26. Capsule according to any of claims 13 to 25, wherein the inner cavity of the capsule housing (4) is provided with a fluid diverter (9).

27. The capsule according to claim 26, characterized in that a beverage extraction chamber (D1) is formed between the fluid diverter (9) and the plastic wrap (6), a fluid diverter chamber (D2) is formed between the fluid diverter (9) and the plastic wrap (5), the consumable is contained in the beverage extraction chamber (D1), and the fluid diverter (9) comprises an outer annular guide (91) on which guide holes (911) are distributed and a central undercut (92) which is recessed with respect to the top annular surface of the outer annular guide (91).

28. The capsule according to claim 27, wherein the outer diameter of the capsule (200) is 35mm to 70mm, the axial height of the capsule (200) is 30mm to 70mm, the ratio between the axial distance between the membrane cutting mechanism (100) and the cover membrane (5) and the axial height of the capsule (200) is 0.5 to 0.9, the ratio between the axial distance between the outer annular flow guide (91) and the cover membrane (5) and the axial height of the capsule (200) is 0.1 to 0.5; and/or the presence of a gas in the gas,

the maximum concave height of the central concave part (92) is not less than 1mm and not more than 10 mm; and/or the presence of a gas in the gas,

the number of the guide holes (911) arranged on the outer ring guide part (91) is not less than 3 and not more than 100; and/or the presence of a gas in the gas,

the outer ring flow guide part (91) comprises a plurality of circles of flow guide hole rings which are concentrically arranged and radially arranged at intervals, and each circle of flow guide hole ring comprises a plurality of flow guide holes (911) which are circumferentially distributed at intervals;

the hole ring radial distance between any two adjacent guide hole rings is equal, or the first hole ring radial distance L1 and the second hole ring radial distance L2 of any two adjacent guide hole rings meet the following requirements:or

In the same circle of water conservancy diversion hole circle, two arbitrary adjacent water conservancy diversion hole circumference interval between water conservancy diversion hole (911) equals, or two arbitrary first water conservancy diversion hole circumference interval C1 and second water conservancy diversion hole circumference interval C2 satisfy:or

29. Capsule according to claim 27, wherein the flow guide holes (911) provided in the outer annular flow guide (91) are flared in an axially downward direction.

30. Capsule according to claim 29, characterized in that the smallest through hole of the flow-directing holes (911) has a hole diameter of not less than 0.05mm and not more than 1 mm; and/or the flow guide hole (911) is conical and the conical angle is not more than 80 degrees.

31. Capsule according to claim 13, wherein the consumable in the material chamber (D) is a soluble or non-soluble object.

32. Beverage machine, characterized in that it comprises a capsule (200) according to any one of claims 13 to 31 and a pressurized fluid injection system for injecting pressurized fluid into said capsule (200).

33. The beverage machine according to claim 32, characterized in that it comprises a hollow tube (10) for piercing the membrane (5) to protrude into the capsule (200), the outlet end face (G) of the piercing end of the hollow tube (10) being formed as an inclined plane having a vertical inclination of 20 ° to 70 °.

Technical Field

The invention belongs to the field of household appliances, and particularly relates to a membrane cutting mechanism, a capsule with the membrane cutting mechanism and a beverage machine.

Background

The capsule type beverage machine is more and more popular with consumers because of the characteristics of simple operation, safety, sanitation, guaranteed beverage quality and the like, and the popularity is gradually improved. The beverage machine is loaded with capsules, the beverage is brewed by injecting liquid with certain pressure into the capsules, and the prepared beverage flows out of the capsule outlet to the liquid containing cup body held by a user.

Most capsules on the market cannot provide preservation protection, are mostly packaged for preservation, need to be removed from an external package first when the capsules are brewed, and are complex to operate. Although a small part of capsules have a self-preservation function, the capsules have obvious defects, namely, the protein beverage powder cannot be effectively dissolved firstly, and a small amount of beverage powder cannot be dissolved after brewing; secondly, during the brewing process, the sealing film has poor cracking structure, the cracks at the mouth part are not uniform, the water outlet is unbalanced, and the water outlet problems such as air bubbles, splashing and the like are easily caused.

For example, in conventional capsule structures, sealing membranes are provided at both the top and bottom openings of the capsule in order to keep the capsule fill free from outside contamination. When the pressurized fluid is injected from the top opening of the capsule, the hydraulic pressure in the inner cavity of the capsule rises, which can rupture the sealing membrane of the bottom opening, allowing the beverage to flow out of the capsule. However, in order to make brewing sufficient and make the beverage flow out smoothly and uniformly, the sealing membrane is required to be broken by hydraulic pressure extrusion to generate a break, the critical bearing pressure for the membrane breakage needs to be designed reasonably, and the position of the break of the sealing membrane is selected properly.

It is also known to pierce the sealing membrane by placing a spike beneath the sealing membrane, which is moved downwardly by the hydraulic pressure in the capsule chamber and pressed against the spike, so that the spike passively pierces the sealing membrane. The puncture needle mode can ensure that the positions of the lacerations are reasonably distributed, but the puncture needles need to be designed into hollow needles so as to facilitate the fluid to flow out along the puncture needle holes. Even so, the breach of punctureing is also relatively little for the drink flow is little, and the hole size of puncture hole is not uniform, easily appears distributing unevenly, flows out discontinuous, unsmooth, even produces the condition such as bubble, splash, also produces the inner chamber hydrops easily.

Various research attempts have also been made by researchers. For example, patent document No. CN101466618A discloses a capsule for reducing dripping. Wherein, be equipped with valve device in the capsule, the outer edge of valve device is formed with flexible lip, and this flexible lip biasing is on the capsule inner wall, and under the non-brewing condition of capsule, flexible lip obstructs the intercommunication of bottom beverage export and material chamber, realizes fresh-keeping function. During brewing of the capsule, the pressure of the beverage fluid in the chamber may push the flexible lip radially inward to open the flow path. The flexible lip closes the flow path once the injection of water into the chamber is stopped. However, the flexible lip also has a bias problem, which causes different deformation amounts at circumferential positions, i.e. the size of the fluid flowing gap is not uniform, resulting in uneven water flow. Moreover, the capsule has high assembly precision requirement, correspondingly high manufacturing cost and high cost, and is not suitable for large-scale manufacturing production.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the membrane cutting mechanism and the capsule and beverage machine with the membrane cutting mechanism, the membrane cutting mode and the structure are novel, so that the capsule beverage flows out smoothly and continuously without accumulated liquid, and the use experience of a user is greatly improved.

To achieve the above object, according to a first aspect of the present invention, there is provided a film cutting mechanism including a body; a support member connected with the body; the cutting knife arm is connected to the body or the supporting piece; the body which is pressed to move downwards can enable the cutting knife arm to contact the membrane to be cut and cut the membrane through the pressed deformation or movement of the supporting piece.

Specifically, the cutter arm and the support piece are integrally arranged to form a cutting piece, the support piece inclines downwards relative to the plane of the body, the cutting piece further comprises a force arm supporting end lower than the body, one end, far away from the body, of the support piece is connected with one end of the force arm supporting end, the other end of the force arm supporting end is connected with the cutter arm, and the cutter arm inclines upwards relative to the horizontal plane of the force arm supporting end; the body which is pressed downwards can push the force arm supporting end to move along the supporting surface through the compression deformation of the supporting piece, and the cutting part at the tail end of the cutter arm can move and cut.

The film cutting mechanism provided by the invention adopts a unique mobile cutting mode to cut a linear notch on the preservative film, so that the notch can be larger, the position is more reasonable, and the design requirement of water outlet is better met. The covering film and the preservative film can be various optional film structures such as simple sealing films, thin films or laminated thin films and the like.

The cutting member is preferably in a V shape, a U shape, a W shape, or the like, but is not limited thereto. The cutting element may preferably extend radially outwardly from the periphery of the body, although the cutting element may be attached to other parts of the body, for example extending from the bottom wall surface of the body. The direction of projection is preferably radial, but may also be slightly skewed. The cutting members are preferably in plurality and arranged along the periphery of the body, for example the number N1 of cutting members is such that: 0 < N1 < 15, preferably 4 < N1 < 12, the horizontal inclination of the support and/or of the cutter arm being not less than 30 DEG and not more than 70 deg.

The body only needs to be capable of being deformed under pressure and driving the cutting piece to deform and move. The body may be formed in a disc shape, a circular ring shape, or a polygonal shape, but may have a central hole. The outer contour of the body may also be a non-continuous contour or the like. In addition, the body is not limited to be a flat sheet, and the body may also be in an upwardly convex arch shape for better deformation and movement effects.

Preferably, the cutting portion may comprise a sharp-ended upwardly cutting form. The cutting forms may be cutting elements of any shape capable of scoring the membrane, preferably serrated cutting elements. The cutting part on each cutting piece can be a single serrated cutting element and also can comprise N2 cutting bodies, and the general requirements are as follows: 0 < N2 ≦ 10, preferably 0 < N2 ≦ 5. In order to obtain better cutting effect, the saw-toothed cutting body is saw-toothed, and the vertical inclination angles of the sharp edges on the two sides are not less than 5 degrees and not more than 90 degrees, preferably not less than 20 degrees and not more than 70 degrees. In addition, in order to facilitate the deformation under pressure, the force arm supporting end and the connecting end of the supporting piece and the body can be respectively provided with a structural weakening groove.

Further, to enhance the whipping and filtering of the fluid, the membrane cutting mechanism may further include an outer edge filtering portion disposed around the periphery of the body, so that the fluid passing through the slit is further filtered when passing through the membrane cutting mechanism. Wherein the filter cells are preferably formed at a peripheral portion of the film cutting mechanism. For example, the outer edge filtering part is provided with a plurality of filter grooves which are distributed at intervals along the circumferential direction. Alternatively, the filter cells may be formed between the outer edge filter portion and the cutter.

As a preferable structure, the membrane cutting mechanism includes a plurality of cutting members which are extended radially outward from the periphery of the body and are arranged at intervals in the circumferential direction, the outer rim filter portion is integrally extended radially outward from the periphery of the body and includes a plurality of filter fans each provided with a plurality of filter grooves extended in the radial direction, and the plurality of cutting members and the plurality of filter fans are alternately arranged at intervals in the circumferential direction.

Wherein, the ratio of the radial length of the filter groove to the outer diameter of the filter fan is not less than 0.05 and not more than 0.25.

When applied to beverage capsules, the maximum width of the filter cell (i.e., the maximum filter diameter) should be no greater than 4 mm. Typically, the maximum cell width of the filter cell is not less than 0.05mm and not more than 2 mm. The number of filter cells N3 provided per filter fan should be not more than 30, preferably not more than 10.

According to a second aspect of the invention, there is accordingly provided a capsule comprising a capsule housing having a capsule inlet and a capsule outlet, a cover film for covering the capsule inlet, and a preservative film disposed within the capsule housing, the preservative film and the cover film defining a material chamber for filling with a consumable. In addition, the capsule also comprises the film cutting mechanism, the film cutting mechanism is arranged below the preservative film, and the cutting part is used for cutting a linear notch on the preservative film.

Wherein, the membrane cutting mechanism can be detachably and movably arranged at the bottom of the inner cavity of the capsule shell. The capsule is including setting up in the below of plastic wrap in order to lead the export drainage structure of capsule export with fluid from the plastic wrap, and the radial outside of export drainage structure is equipped with along the cutting piece supporting station that the hoop was arranged, and membrane cutting mechanism can set up in export drainage structure's top, and the supporting surface that the supporting arm of force supported the end can be formed to the bearing table face of cutting piece supporting station. The supporting surface can be formed into a horizontal plane or a radial outward ascending surface or a horizontal plane or a radial outward descending surface; the slope inclination angles of the upper slope surface and the lower slope surface are both preferably not more than 20 °.

The inner peripheral wall of the capsule housing may also be formed with a knife arm guide surface against which the cutting portion of the cutting knife arm abuts, the cutting portion moving upwardly along the knife arm guide surface and producing a radially inward deforming movement during the downward pressing of the body, thereby cutting a linear cut in the membrane. In the pressed state of the body, a filtering cavity can be formed between the filtering fan and the cutting piece supporting platform, and fluid in the material cavity sequentially flows through the notch, the filtering groove and the filtering cavity on the preservative film and enters the outlet drainage structure.

The body is moved from an initial uncompressed state to a compressed downward moving state, and the downward moving distance of the body is preferably 1mm to 10 mm. In order to obtain the limiting support for pressing and moving the body downwards, a bottom supporting platform of the filtering fan which protrudes downwards can be formed on the periphery of the bottom surface of the body, and in a pressing and moving-downwards state, the bottom supporting platform of the filtering fan is pressed against the top surface of the outlet drainage structure. In a similar way, the periphery of the bottom surface of the body can be provided with a cutting part bottom supporting platform which protrudes downwards, and the cutting part bottom supporting platform is pressed against the top surface of the outlet drainage structure in a pressed and downwards moving state. This advantageously forms a filtrate volume and, more advantageously, the support surface of the cutting element support platform can be designed to be no higher than the top surface of the outlet flow directing structure.

In order to avoid the filter fan from mechanically interfering with the inner peripheral wall of the capsule during the downward movement under pressure, the distance between the outer peripheral edge of the filter fan and the inner peripheral wall of the capsule shell should be not less than 0.05mm and not more than 3.5mm in the non-pressed state of the body, and the distance between the outer peripheral edge of the filter fan and the inner peripheral wall of the capsule shell should be not more than 3.5mm and preferably 0mm in the downward movement under pressure of the body.

In order to limit the cutting piece, the cutting piece supporting platform can be provided with peripheral side limiting ribs positioned at two sides of the cutting piece in the circumferential direction, and an overflowing gap communicated to the filtering cavity is formed between the radial outer ends of the peripheral side limiting ribs and the inner peripheral wall of the capsule shell. Furthermore, a flow blocking rib can be arranged between the radial inner sides of the circumferential limiting ribs. The limiting ribs on the peripheral sides of the two sides, the inner peripheral wall of the capsule shell and the flow blocking ribs can form a blade mounting space, and fluid in the blade mounting space is communicated with the flow filtering containing cavity through the flow passing gap.

The outlet drainage structure can be composed of a plurality of circles of labyrinth-shaped rib walls which are concentrically arranged, and can also be a plurality of slow flow columns which are arranged in a mode of improving the fluid outflow performance.

Alternatively, in a partial beverage capsule, the inner cavity of the capsule housing may be provided with a fluid distribution member, such as in an espresso capsule, which requires a pressure equalization. Of course, no fluid diversion member needs to be provided in a portion of the beverage capsule, such as in a brewed coffee capsule.

The fluid diverter is preferably centrally located in the capsule interior cavity. A beverage extraction cavity is formed between the fluid flow distribution piece and the preservative film, a fluid flow distribution cavity is formed between the fluid flow distribution piece and the film, consumables are contained in the beverage extraction cavity, and the fluid flow distribution piece comprises an outer ring flow guide portion with flow guide holes and a central lower concave portion which is concave relative to the top ring surface of the outer ring flow guide portion. The central lower concave part can play a role of avoiding a hollow pipe for injecting liquid into the capsule, and can play a role of dispersing fluid.

Generally, the outer diameter of the capsule is in the range of 35mm to 70mm, and the axial height of the capsule is in the range of 30mm to 70 mm. The ratio of the axial distance between the membrane cutting mechanism and the membrane to the axial height of the capsule is 0.5-0.9, and the ratio of the axial distance between the outer annular flow guide part and the membrane to the axial height of the capsule is 0.1-0.5. At this time, the maximum depressed height of the central depressed portion is generally not less than 1mm and not more than 10 mm.

Preferably, the flow guiding holes arranged on the outer ring flow guiding part can be flared hole channels which are arranged axially downwards, so that more uniform fluid distribution is realized. In order to obtain a better fluid dispersion effect, the diameter of the smallest through hole of the flow guide hole is not less than 0.05mm and not more than 1mm, and the flow guide hole is preferably conical and has a conical angle of not more than 80 °.

The number of the diversion holes arranged on the outer ring diversion part is not less than 3 and not more than 100. In a preferred mode, the outer ring flow guide part comprises a plurality of circles of flow guide hole rings which are concentrically arranged and radially arranged at intervals, and each circle of flow guide hole ring comprises a plurality of flow guide holes which are circumferentially distributed at intervals;

wherein, the radial distance between any two adjacent guide hole rings is equal, or the diameter of any two first hole ringsThe radial distance L1 and the radial distance L2 of the second hole ring satisfy that:or

In the water conservancy diversion hole circle of same round, the water conservancy diversion hole circumference interval between two arbitrary adjacent water conservancy diversion holes equals, or the first water conservancy diversion hole circumference interval C1 of two arbitrary and second water conservancy diversion hole circumference interval C2 satisfy:or

The capsule of the invention can be a beverage capsule and can also be a capsule with other functions. The consumable in the cavity of the capsule can be soluble objects such as drink powder or any other non-soluble objects.

According to a third aspect of the present invention, there is also accordingly provided a beverage machine comprising a pressurized fluid injection system and a capsule as described above, the pressurized fluid injection system injecting pressurized fluid into the capsule.

Among them, the beverage maker generally includes a hollow tube for piercing the coating film to extend into the capsule, and a water outlet end surface of a piercing end of the hollow tube is preferably formed as an inclined surface having a vertical inclination angle of preferably 20 ° to 70 °.

The membrane cutting mechanism has the function of cutting the membrane of the capsule, and the formed incision is wider than the puncture opening, thereby being beneficial to the rapid and large-flow outflow of liquid. And the membrane cutting mechanism has novel structure, fully utilizes the fluid pressure in the capsule cavity, and can cause the support part to deform or move under the pressure so as to drive the cutting knife arm to contact the membrane to be cut, and finally, the membrane is subjected to moving cutting. In the capsule equipped with the membrane cutting mechanism, the outflow of the capsule beverage can be more rapid, smooth and complete, and the beverage fluid continuously and uninterruptedly flows out in a linear shape. In addition, the further stirring and filtering functions of the membrane cutting mechanism can ensure that the extraction is more sufficient and the beverage is more fragrant and mellow, thereby improving the satisfaction degree of users on the capsule and the beverage machine adopting the capsule in many aspects.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 and 2 are schematic views showing the structure of a capsule according to a preferred embodiment of the present invention, wherein fig. 1 is a view showing an uncompressed state, and fig. 2 is a view showing a downward-pressed state;

FIG. 3 is an enlarged view of a portion U of FIG. 1;

FIG. 4 is an enlarged view of portion V of FIG. 2;

FIG. 5 is a schematic diagram of the membrane shear cutter of FIG. 1;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a bottom view of FIG. 5;

FIG. 8 is an overall cross-sectional view of FIG. 5;

FIG. 9A is an enlarged view of the portion W of FIG. 8;

FIG. 9B is a schematic view showing the structure of the cutter of FIG. 9A in isolation;

FIG. 10 is a partial schematic view of the cutter arm of FIG. 9A;

fig. 11A and 11B are schematic structural views of a capsule housing according to a first preferred embodiment of the present invention, wherein fig. 11A illustrates a schematic perspective structure of the capsule housing, and fig. 11B shows a top view of the capsule housing;

FIG. 12 is an enlarged view of the portion X in FIG. 11A;

fig. 13A and 13B are schematic structural views of a capsule housing according to a second preferred embodiment of the present invention, wherein fig. 13A illustrates a schematic perspective structure of the capsule housing, and fig. 13B shows a top view of the capsule housing;

FIG. 14 is an enlarged view of the portion Y in FIG. 13A;

fig. 15A and 15B are schematic structural views of a fluid diverter according to a preferred embodiment of the present invention, wherein fig. 15A shows a schematic perspective structural view of the fluid diverter, and fig. 15B shows a top view of the fluid diverter;

FIG. 16 is an overall cross-sectional view of FIG. 15A;

FIG. 17 is an enlarged view of the portion Z of FIG. 16;

FIG. 18 is a schematic perspective view of the outer shell of the capsule according to the third preferred embodiment of the present invention;

fig. 19 is an enlarged view of a portion S in fig. 18.

Description of reference numerals:

100 film cutting mechanism 200 capsule

231 cutting part 911 flow guide hole

1 body 2 cutting member

3 filtering fan 4 capsule shell

5 film-covering 6 preservative film

7 outlet drainage structure 8 cutting piece supporting table

9 fluid splitter 10 hollow tube

11 bottom support table of filter fan 12 cutting piece

21 arm of force support end 22 support

23 cutter arm 24 structurally weakened groove

31 filter 71 labyrinth rib wall

72 slow flow column 81 bearing table surface

82 peripheral side limiting rib 83 overflowing gap

84 flow blocking rib

91 outer ring flow guide 92 central lower concave part

Vertical inclination angle of A sharp edge a sharp edge

B1 Capsule inlet B2 Capsule outlet

C support surface D material cavity

D1 drink extraction chamber D2 fluid reposition of redundant personnel chamber

E knife arm guide surface F filtering flow cavity

G horizontal inclination angle of water outlet end face b support/cutting knife arm

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

In the present invention, unless indicated to the contrary, use of the directional terms "upper, lower, top and bottom" are generally used with respect to the orientation shown in the drawings or to describe the relative positioning of the components with respect to each other in the vertical, vertical or gravitational direction. Orientational words such as "radial, axial", "inner and outer" are generally used with respect to the capsule body or the capsule cavity.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The present invention first provides a novel film cutting mechanism, and the film cutting mechanism 100 includes: the cutting tool comprises a body 1, a support part 22 connected with the body 1 and a cutting tool arm 23, wherein the cutting tool arm 23 is connected to the body or the support part 22; wherein the body 1 which is pressed and moved downwards can make the cutter arm 23 contact and cut the film to be cut by the pressed deformation or movement of the support 22.

Accordingly, the present invention provides a capsule having the novel membrane cutting mechanism described above fitted therein. In one particular capsule configuration shown with reference to fig. 1-4, the capsule 200 includes a capsule housing 4 having a capsule inlet B1 and a capsule outlet B2, a cover 5 for covering the capsule inlet B1, and a preservative film 6 disposed within the capsule housing 4, the preservative film 6 and the cover 5 defining a material chamber D for filling with a consumable. The capsule 200 employs the above-mentioned film cutting mechanism 100, the film cutting mechanism 100 is disposed below the plastic wrap 6, and the cutting portion 231 is used for cutting a linear incision on the plastic wrap 6.

In the capsule of the present invention, a double membrane seal design is employed. As shown in fig. 1, the consumable (i.e., the drink powder or other filler, such as coffee powder or tea leaves) inside the capsule is sealed in the cavity D between the coating film 5 and the plastic wrap 6, and can be effectively stored during the non-use period of the capsule. As shown in fig. 2, during brewing, a fluid under pressure is injected into the brew chamber D through the hollow tube 10 piercing the cover 5 to blend or brew the consumable, thereby brewing the drink fluid.

Wherein, when body 1 pressurized and when moving down, support piece 22 pressurized deformation is in order to be used for supporting body 1 and energy storage, when cutting tool arm 23 connects on support piece 22, support piece 22 can give cutting tool arm 23 with reaction force behind the energy storage to order about cutting tool arm 23 to cut plastic wrap 6, and when cutting tool arm 23 links to each other with body 1, by the direct drive cutting tool arm 23 cutting plastic wrap 6 of body 1 that moves down, support piece 22 warp and is used for supporting body 1.

Optionally, when the body 1 is pressed to move, the supporting member 22 connected to the body 1 can be driven to move after being pressed, so that when the cutter arm 23 is connected to the supporting member 22, the supporting member 22 is pressed to move so as to push the cutter arm 23 to cut the plastic wrap 6; when the cutter arm 23 is directly connected to the body 1, the cutter arm 23 is directly driven by the body 1 moving downward to cut the plastic wrap 6, and the support member 22 is moved by the downward pressure from the body 1.

Preferably, referring to fig. 5 to 10, the cutter arm 23 and the support member 22 are integrally arranged to form the cutting member 2, the support member 22 is inclined downward with respect to the plane of the body 1, as shown in fig. 9A, the cutting member 2 further includes a force arm support end 21 lower than the body 1, one end of the support member 22 away from the body 1 is connected to one end of the force arm support end 21, the other end of the force arm support end 21 is connected to the cutter arm 23, and the cutter arm 23 is inclined upward with respect to the plane of the force arm support end 21. The body 1, which is pressed down, can push the arm support end 21 to move along the support surface C by the pressed deformation of the support 22, and make the cutting portion 231 of the end of the cutter arm 23 produce moving cutting.

Wherein, because the hydraulic pressure in the material chamber D increases gradually, extrudes the plastic wrap 6 downwards, and then makes the membrane cutting mechanism 100 produce whole deformation, impels the cutting part 231 of cutting member 2 can cut out the incision on plastic wrap 6, and the capsule export B2 from capsule shell 4 bottom can be flowed out through the incision to the brewing fluid.

In particular, the film structure (i.e., the plastic wrap 6) shown in fig. 1 and 2 is preferably located above the film cutting mechanism 100 so that when the body 1 of the film cutting mechanism 100 is pressed downward, the cutting portion 231 of the cutting member 2 can be conveniently and reliably moved upward and cut a cut in the film structure. The film cutting mechanism 100 can be disposed under the fresh-keeping film 6 in a fitting manner, and when the body 1 is pressed downward, the supporting member 22 is deformed by the downward pressure from the body 1, so that the arm supporting end 21 moves along the supporting surface C (see fig. 12 or 14) under the supporting condition, and further drives the cutting portion 231 at the end of the cutter arm 23 to move and cut a long-strip-shaped cut on the fresh-keeping film 6.

Obviously, the incision cut or sheared by the blade is completely different from the puncture, i.e. the puncture hole formed by the existing puncture needle which passively punctures the fresh-keeping film 6. The scheme of the invention adopts a unique mobile cutting mode to actively cut the strip-shaped notch on the preservative film 6, and the formed notch is larger and more meets the brewing requirement and the water outlet requirement. Moreover, the selection and arrangement of the positions of the notches can realize uniform distribution through the design of the cutter disc, so that the fluid outflow is balanced. Like this, the drink that brew formed in material chamber D just can be smoothly and evenly, flow from plastic wrap 6 through this long banding incision in succession, impel the drink steadily and flow from capsule export B2 and then fall into user's flourishing liquid cup in succession, can greatly promote user's operation experience.

It should be noted that the membrane cutting mechanism 100 capable of generating a moving cut can be applied not only to the capsule 200, but also to other products requiring a cut to be generated in the membrane structure, and will not be described herein again.

The film structure can be a simple sealing film, a thin film or a laminated thin film and other optional structures and materials. The consumable can be soluble dairy product, multi-taste beverage powder, soup powder, solid granule beneficial to human health or mixed taste powder, such as milk tea, milk coffee, hot cocoa, protein powder, Chinese medicinal granule, vitamin granule, and mixture of any two or more of them; alternatively, the consumable may be an insoluble beverage such as coffee, tea, herbs, fiber, oats, and mixtures of two or more thereof. In short, the present invention is not limited to the type, shape, form, etc. of the consumable. However, for the convenience of understanding and clarity, only the beverage powder is described as an example.

Preferred embodiments of the membrane cutting mechanism and capsule of the present invention are described in more detail below with reference to the accompanying drawings.

In such a film cutting mechanism 100 in which the cutter blade is driven to cut by pressure deformation to form a slit, the cutter disk-like body 1 and the cutter 2, etc., which are deformed by pressure in the drawing, may each have a plurality of appropriate shapes and deformed forms by pressure. For example, the cutter 2 shown in fig. 5 is V-shaped (i.e. having 1 moment arm support end 21), but can be expanded to be W-shaped (i.e. having 2 moment arm support ends 21), U-shaped, or even continuous teeth with more moment arm support ends 21, so long as the support 22 in the cutter 2 is deformed under pressure to push the moment arm support ends 21 to move, so that the cutting portion 231 of the cutter arm 23 can move and cut the plastic wrap 6. It should be noted that the illustrated moment arm support end 21 is the lowermost end of the cutter 2, but in other shapes of cutter 2, the support point is not limited to the lowermost end of the cutter 2, such as in a generally U-shaped cutter 2.

The cutting member 2 preferably projects radially outwardly from the periphery of the disc-shaped body 1 as shown in fig. 8 and 9A. Thus, when the body 1 is pressed downwards, the cutting part 2 can cause the cutting knife arm 23 to generate more definite radial outward deformation when the force arm supporting end 21 is supported, the cutting part 231 of the cutting knife arm 23 can generate radial moving cutting, radial cuts can be formed on the membrane, a plurality of uniformly distributed radial cuts can be formed along the circumferential direction of the membrane, and the fluid flow at each position is more uniform. Therefore, the film cutting mechanism 100 is simpler and more definite from the shape structure design, the deformation design to the part size and the cut size design, the large-scale general manufacturing of the product is easier, and the yield is higher.

It will be understood by those skilled in the art that although in the preferred embodiment shown the cutting member 2 extends radially outwardly from the periphery of the body 1, i.e. the inner end of the support member 22 is connected to the body 1, it is also possible that the outer end of the support member 22 is connected to the body 1 and the cutting member 2 extends radially inwardly from the periphery of the body 1. In addition, the cutting member 2 is not limited to extend in the radial direction, nor does it exclude, for example, that the cutting member 2 projects tangentially from the periphery of the body 1.

Further, referring to fig. 9B, the horizontal inclination angle B of the support 22 should be not less than 30 ° and not more than 90 °. It can be understood that if the horizontal inclination angle b of the supporting member 22 is too large, the body 1 is pressed to give a large vertical downward pressure to the supporting member 22, so that the arm supporting end 21 has a large moving friction force. Thus, a larger downward pressure needs to be applied to the body 1 to enable the moment arm supporting end 21 to move along the supporting surface C, and the situation that the moment arm supporting end 21 is not moved and the supporting piece 22 is pressed and bent easily occurs at the moment; of course, if the horizontal inclination angle b of the supporting member 22 is too small, the body 1 is not pressed or is pressed less (e.g. the capsule 200 is shaken up and down slightly, so that the cutting member 2 gives a smaller downward pressure to the body 1 due to the inertia of the consumable), so that the cutting member 2 is easy to cut the plastic wrap 6 accidentally.

In the present embodiment, referring to fig. 9B, the horizontal inclination angle B of the cutter arm 23 should further preferably be not less than 30 ° and not more than 70 °. Thus, when the arm support end 21 moves, the end of the cutter arm 23 is moved to facilitate the cutting part 231 to move and cut the plastic wrap 6.

Specifically, the number of the cutting members 2 may be 1, or may be plural and arranged at equal intervals along the circumference of the body 1, but the number of the cutting members 2 should be not more than 15. Generally, the larger the outer diameter of the capsule 200, the larger the number of cutting members 2 that need to be provided in the membrane cutting mechanism 100, and the specific number of cutting members 2 to be provided may depend on the actual process requirements. Preferably, with reference to fig. 5 and 6, the number of cutting members 2 should be no less than 4 and no more than 12, and further, in order to avoid the beverage flowing out from the capsule outlet B2 from deviating, the cutting members 2 should be spaced evenly along the periphery of the body 1.

The cutter arm 23 and the cutting portion 231 thereof may be various sharp blades, sharp edges, or cutters, etc., by which the cutting of the wrap 6 is quickly and conveniently accomplished to form a desired cut. Due to the cutting mode, the cutting device is not limited to have a single sharp cutting edge. Referring to fig. 5 and 10, the cutting part 231 includes a cutting body (e.g., a blade part) having an upward sharp end, and the illustrated cutting body is preferably a saw-tooth shape having an upward sharp end, so that when the distal end of the cutting arm 23 moves, the sharp edge of the tip of the saw-tooth cuts the plastic wrap 6 more easily, thereby forming a cut in a long strip shape in the plastic wrap 6. Of course, the cutting shapes are not limited to saw-tooth shapes, and may be any other shapes, such as barbed needles, blades, etc.

Wherein the cutting portion 231 of each cutting member 2 should include no more than 10 serrated edges. However, the greater the number of serrated blades included in the cutting portion 231, the greater the contact point, contact area, and force-bearing area of the film cutting mechanism 100 and the cling film 6, and the more difficult the cutting portion 231 can cut the cling film 6. In the present embodiment, the cutting part 231 should include not more than 5 serrated edges. In addition, with continued reference to fig. 5 and 10, the respective vertical inclination angles a of the two sides a of the saw blade should be not less than 5 ° and not more than 90 °, and more preferably not less than 20 ° and not more than 70 °, so as to facilitate the saw-toothed cutting portion 231 to cut and further move to cut the plastic wrap 6.

In addition, the body 1 may have a solid disk shape such that the pressure receiving area is maximized, see fig. 5. Of course, when the pressure or the pressure intensity of the compressive deformation is enough, the body 1 may also be circular, that is, have a central circular hole. Of course, the cutting device can take other shapes as long as the body 1 can give a considerable deformation driving force to the supporting member 22 after being pressed so as to cause the supporting member 22 to deform to push the cutting portion 231 to move and cut. The body 1 is not limited to the illustrated disk shape, and may be, for example, a polygonal shape or other irregular shape, and the outer contour of the body 1 may be continuous or discontinuous.

As shown in fig. 9A, the force arm supporting end 21 and the connecting end of the supporting member 22 and the body 1 are further preferably provided with a structural weakening groove 24, respectively, so that the cutting member 2 is more easily deformed under a certain downward pressure.

Furthermore, due to the limited space inside the capsule cavity, the body 1 is preferably in the shape of an upwardly bulging arch. Namely, the preservative film 6 is preferably in an upward-bulging arch shape after being welded at the bottom of the capsule cavity, and the body 1 is attached to the upward-bulging central part of the preservative film 6. Thus, under the same cutting stroke of the cutting member 2, the downward deformation of the film cutting mechanism 100 is smaller, the stroke for achieving deformation movement is shorter, the force for deformation cutting is larger, the structure is more compact, and the space utilization rate is higher. Specifically, the disk surface of the body 1 which is integrally in an upward arch shape is attached to the film surface of the preservative film 6, namely, the body 1 and the preservative film 6 are both in an upward arch shape. Of course, the plastic wrap 6 may be a flat film, and the arched body 1 has a central platform, so that the body 1 and the plastic wrap 6 are in planar contact.

In addition, because the incision is relatively bigger, when the film cutting mechanism 100 is arranged below the preservative film 6, the fluid flowing out through the incision can directly flow out after passing through the cutter head, and in order to avoid the residual impurities in the flowing beverage, the film cutting mechanism 100 has the functions of filtering, accelerating stirring and ventilating above and below the cutter head. For example, the membrane cutting mechanism 100 illustrated in fig. 5 to 7 includes an outer edge filter portion provided around the periphery of the body 1, and a plurality of filter grooves 31 distributed at intervals in the circumferential direction are provided through the outer edge filter portion. The fluid in the capsule material cavity D falls onto the membrane cutting mechanism 100 after passing through the cut by the preservative film 6 by the membrane cutting mechanism 100, and then can be fully filtered and stirred with higher speed by each filter cell 31 of the membrane cutting mechanism 100, and then flows downwards to obtain a beverage with better quality.

As shown in fig. 5 to 7, the membrane cutting mechanism 100 includes a plurality of cutting members 2 which are radially outwardly protruded from the periphery of the body 1 and arranged at intervals in the circumferential direction, an outer rim filter portion which is integrally protruded from the periphery of the body 1 in the radial direction and includes a plurality of filter fans 3, each filter fan 3 is provided with a plurality of filter grooves 31 which are radially extended, and the plurality of cutting members 2 and the plurality of filter fans 3 are alternately arranged at intervals in the circumferential direction so that the fluid flowing out through the filter grooves 31 of the filter fans 3 is evenly distributed in the circumferential direction.

Wherein, the radial length of filter cell 31 is undersize, then the outflow is slow, and filtering capability is poor, and the radial length of filter cell 31 is too big, then the lifting surface area of body 1 diminishes. For this reason, the ratio between the radial length of the filter cells 31 and the outer diameter of the filter fan 3 is preferably not less than 0.05 and not more than 0.25. The maximum groove width of the filter grooves 31 is preferably not more than 4mm, not less than 0.05mm and not more than 2mm in view of the particle size of the conventional filler, insoluble slag particles to be filtered. In the present embodiment, the number of filter grooves 31 provided on each filter fan 3 is not more than 30, preferably not more than 10, and fig. 5 shows that each filter fan 3 includes 4 filter grooves 31 arranged at equal intervals in the circumferential direction.

Further, it is conceivable that the filter grooves 31 may be formed not throughout the outer edge filter part but between the outer edge filter part and the cutter 2. The cutting elements 2 and the filter fan 3 can also be formed in other non-regular arrangements in the circumferential direction than shown in fig. 5.

The membrane cutting mechanism 100 shown in fig. 5 to 7 can be detachably mounted in the bottom of the inner cavity of the capsule housing 4 shown in fig. 11A, 11B or 13A, 13B, i.e. a detachable fitting, instead of a fixed mounting by piercing. Thus, the membrane cutting mechanism 100 can be independently produced and manufactured, and the design and manufacturing difficulty of the capsule body is simplified. Wherein the film cutting mechanism 100 is capable of deforming movement under pressure (e.g., finger pressure) or pressure after assembly to the capsule. The film cutting mechanism 100 is therefore movably mounted, rather than fixedly mounted.

As shown in fig. 11A to 14, the capsule 200 further includes an outlet guide structure 7 disposed below the plastic wrap 6 to guide the fluid from the plastic wrap 6 to the capsule outlet B2, a cutting member support table 8 arranged in a circumferential direction is provided radially outside the outlet guide structure 7, the film cutting mechanism 100 is disposed above the outlet guide structure 7, and a support surface C supporting the moment arm support end 21 is formed on a support surface 81 of the cutting member support table 8.

When the film cutting mechanism 100 is installed, the moment arm support end 21 of each cutter 2 can be stably supported on the cutter support table 8. The cutting member supporting table 8 is used for forming an annular supporting surface C, or a plurality of supporting surfaces C distributed at intervals in an annular shape, as shown in fig. 11A, 11B, and 12. The cutting member support platform 8 in the figure is integrally extended from the inner wall of the capsule housing 4, although the cutting member support platform 8 may also be integrally formed with the outlet drainage structure 7.

In the preferred embodiment film cutting mechanism 100 shown in fig. 5 to 10, the inner end of the support member 22 is connected to the body 1. Referring to fig. 9A and 9B, it is conceivable that when the top surface of the body 1 is pressed downward, if the supporting surface C is a horizontal plane, the cutting portion 231 makes a substantially arc-shaped cut. At this time, the supporting surface C may also be an upward slope surface facing radially outward, so as to push the arm supporting end 21 to climb along the slope surface, so as to generate a deformation movement facing radially inward, so that the cutting portion 231 cuts the plastic wrap 6 upward and radially inward, thereby improving the cutting efficiency. Of course, the support surface C could be formed as a horizontal surface or as a radially outwardly descending surface if the cutting element 2 extends radially inwardly, i.e. the outer end of the support element 22 is connected to the body 1. In the present embodiment, the support surface C is in the form of a horizontal surface, and if formed as a slope, the slope inclination angle of the upper slope and the lower slope is preferably not more than 20 °. If the slope angle is too large, the downward pressure (i.e. the hydraulic pressure of the material cavity) borne by the body 1 needs to be very large.

In the preferred embodiment capsule 200 shown in fig. 1, 2, the built-in membrane cutting mechanism 100 comprises a plurality of cutting members 2 protruding radially outward from the periphery of the body 1 and arranged at intervals in the circumferential direction, i.e., the membrane cutting mechanism 100 shown in fig. 5 to 10. At this time, the inner peripheral wall of the capsule housing 4 is more preferably formed with a knife arm guide surface E, as shown in fig. 11A to 14. When the film cutting mechanism 100 is assembled on the cutting member supporting table 8, the force arm supporting end 21 is supported on the supporting surface C, the cutting part 231 of the cutting knife arm 23 radially outwards abuts against the shown approximately vertical knife arm guiding surface E, and in the process of downward movement of the body 1 under pressure, the knife arm guiding surface E forms a limiting surface for limiting the outward radial movement, so that the cutting part 231 can only move upwards along the knife arm guiding surface E to cut the preservative film 6 upwards, and in the process of downward movement of the body 1 under continuous pressure, the cutting part 231 radially inwards extends to enlarge the cut on the preservative film 6.

The blade arm guide surface E serving as both the stopper structure and the guide structure may be the inner peripheral wall of the capsule housing 4, or may be an inner wall surface of a projecting structure projecting from the inner peripheral wall of the capsule housing 4, depending on the specific situation.

Further, when the membrane cutting mechanism 100 further includes a plurality of filtering fans 3 disposed at intervals around the periphery of the body 1, i.e., the membrane cutting mechanism 100 shown in fig. 5 to 10 having the filtering and whipping functions, the filtering flow channel should be optimally designed after the membrane cutting mechanism 100 is assembled. Basically, in the pressed and downward-moved state of the body 1, a filtering flow cavity F should be formed between the filtering fan 3 and the cutting member supporting table 8 to receive the filtering flow of the filtering fan 3, as shown in fig. 3 and 4. The fluid in the chamber D flows in sequence through the cut in the plastic wrap 6, the filter cells 31 and the filtration flow volume F and into the outlet flow directing structure 7.

To form the filtration flow volume F, as shown in fig. 12 or 14, the pedestal surface 81 located directly below the filtration fan 3 may be preferably formed to be concave or lower than the support surface C, so that in the downward pressed state of the membrane cutting mechanism 100, i.e., the maximum downward moving position of the membrane cutting mechanism 100, the filtration fan 3 does not contact the pedestal surface 81 directly below, i.e., the filtration flow volume F can be formed therebetween.

In fig. 12 or 14, it is evident that the support surface C is raised significantly above the other rest surface 81 portions. Further, referring to fig. 7, a bottom supporting platform 11 of the filter fan is formed on the bottom periphery of the body 1, and in a pressed and downward moving state, the bottom supporting platform 11 of the filter fan can be pressed against the top of the labyrinth rib wall 71 of the outermost ring of the outlet drainage structure 7, so that not only is the effective support of the membrane cutting mechanism 100, especially the filter fan 3, strengthened, but also the formation of the filtering flow cavity F can be ensured when the supporting platform surface 81 of the cutting member supporting platform 8 is not higher than the top surface of the outlet drainage structure 7.

Similarly, referring to fig. 4 and 7, a cutting member bottom supporting table 12 protruding downward is also formed on the bottom periphery of the body 1, and in a pressed downward moving state, the cutting member bottom supporting table 12 is pressed against the top of the labyrinth rib wall 71 of the secondary outer ring of the outlet flow guide structure 7 to support the cutter head.

In the present embodiment, the film cutting mechanism 100 is moved down from the initial uncompressed state to the compressed downward state at the maximum downward movement position, and the downward movement distance of the body 1 is preferably 1mm to 10 mm. Too little deformation downshifting distance is not enough to drive the cutting part 231 enough to make a sufficient stroke to cut a cut in the preservative film 6, and too much deformation downshifting distance is limited by the limited installation space of the capsule inner cavity and the overall height of the capsule.

Referring to fig. 11A to 14, the cutter support base 8 is further formed with circumferential side restricting ribs 82 located on both sides of the cutter 2 in the circumferential direction, and a flow gap 83 communicating with the flow filtration chamber F is formed between the radially outer end of the circumferential side restricting ribs 82 and the inner circumferential wall of the capsule housing 4. The circumferential side restricting ribs 82 prevent the cutter member 2 from deflecting. The flow gap 83 allows fluid in the blade mounting space to be dumped into the filter flow volume F on both sides, particularly when the support surface C is higher than the other pedestal surface 81.

In fig. 18 and 19, the blade mounting space is defined by the circumferential side limiting rib 82 and the blade arm guide surface E on both sides, and further, a flow blocking rib 84 may be provided between the radial inner sides of the circumferential side limiting rib 82, so that the fluid in the blade mounting space flows to the filter flow cavity F only through the flow passage gap 83.

After the cutting piece 2 forms a cut on the preservative film 6, high-pressure drink fluid in the material cavity D flows out downwards through the cut, most of the high-pressure drink fluid is sputtered onto the filtering fans 3 on two sides through the sharp edges A on two sides of the sawtooth cutting edge shown in fig. 10, the high-pressure drink fluid falls to a filtering flow cavity F below the filtering fans 3 after being stirred and filtered by the filtering fans 3, a small part of the fluid flows into the blade mounting space, then flows to the filtering flow cavity F through the flow gap 83, and finally flows to the capsule outlet B2 continuously and uniformly through the outlet drainage structure 7.

In the compression deformation process of the film cutting mechanism 100, mechanical interference with other members is prevented. In the present embodiment, in the uncompressed state of the body 1, the distance between the outer periphery of the filter fan 3 and the inner peripheral wall of the capsule housing 4 should be not less than 0.05mm and not more than 3.5mm, and in the compressed downward movement state of the maximum downward movement position of the body 1, the distance between the outer periphery of the filter fan 3 and the inner peripheral wall of the capsule housing 4 should also be not more than 3.5mm, otherwise, an excessively large distance easily causes the fluid to flow to the filter flow cavity F through the flow gap formed by the distance between the outer periphery of the filter fan 3 and the inner peripheral wall of the capsule housing 4, without stirring and filtering through the filter groove 31, losing the filtering effect, so that large particles leak out.

In the pressed downward movement state of the maximum downward movement position of the body 1, the outer periphery of the filter fan 3 is preferably in contact with the inner peripheral wall of the capsule shell 4, namely the distance between the two is 0mm, no gap exists between the two, and no overflowing gap is formed.

The outlet flow directing structure 7 may be a plurality of circles of labyrinth-like rib walls 71 concentrically arranged as shown in fig. 11A and 12, or the outlet flow directing structure 7 may be a plurality of flow slowing columns 72 staggered in the circumferential direction and the radial direction as shown in fig. 13A, 13B and 14. The outlet drainage structure 7 has the effects of slowing down the flow velocity of high-pressure fluid and balancing the flow at each position in the circumferential direction, so that the fluid flowing out of the confluence is more balanced and continuous, and the drink fluid is prevented from intermittently flowing out.

In addition, referring to fig. 1 and 2, the inner cavity of the capsule housing 4 is provided with a fluid splitter 9, and the fluid splitter 9 can be arranged at any position of the inner cavity of the capsule. Preferably, a beverage extraction cavity D1 is formed between the fluid diverter 9 and the plastic wrap 6, a fluid diversion cavity D2 is formed between the fluid diverter 9 and the plastic wrap 5, and consumables are contained in the beverage extraction cavity D1.

The fluid diverter 9 serves to disperse the water flow and to pressurize it. As shown in fig. 15A and 16, the fluid flow splitter 9 includes an outer annular flow guide portion 91 on which flow guide holes 911 are distributed, and a central concave portion 92 that is concave with respect to a top annular surface of the outer annular flow guide portion 91. In fig. 2, hollow tube 10 extends into fluid distribution cavity D2 and is aligned downwardly with central undercut 92. The high-pressure water flow of the water outlet end surface G of the hollow pipe 10 is injected into the concave surface of the central lower concave part 92, is uniformly distributed in the fluid diversion cavity D2 after being sputtered by the concave surface, and then uniformly flows to the beverage extraction cavity D1 below through each diversion hole 911.

The arrangement of the fluid diverter 9 with the diversion holes 911 increases the hydraulic pressure in the fluid diversion chamber D2, and the fluid diverter 9 deforms and moves down to press the filling in the beverage extraction chamber D1 downward, which is particularly advantageous for extraction of espresso coffee, for example.

The provision of the central undercut 92 provides an escape space for the hollow tube 10 so that the fluid diverter 9 need not be provided too low to compress the height space of the beverage extraction cavity D1. In the present embodiment, referring to fig. 16, the maximum depressed height of the central depressed portion 92 is preferably not less than 1mm and not more than 10 mm.

Specifically, in the beverage capsule, beverage powder is contained in the beverage extraction chamber D1, and the inner concave surface of the central depressed portion 92 of the fluid diversion member 9 can splash back the liquid rushing down, so that the liquid rushing in can be reflected and scattered by the central depressed portion and splashed into the fluid diversion chamber D2. Therefore, the pressure difference of the liquid applied to each area of the outer ring flow guide part 91 can be effectively reduced, the outer ring flow guide part 91 is beneficial to uniformly pressing each area, the fluid flow distribution piece 9 can uniformly distribute the liquid above the flow distribution piece, the leaked liquid can uniformly cover the surface of the beverage powder, and the beverage powder is more fully extracted, so that the waste of the beverage powder can be avoided, and the beverage is more fragrant and mellow.

In this embodiment, the capsule may be of a household type or a commercial type. The outer diameter of the capsule 200 is preferably 35mm to 70mm, and the axial height of the capsule 200 is preferably 30mm to 70 mm. The ratio of the axial distance between the membrane cutting mechanism 100 and the covering membrane 5 to the axial height of the capsule 200 is preferably 0.5-0.9, and can be adjusted according to the diameter and height of the upper part of the capsule, the installation height of the fluid diversion member 9 and the like. The ratio of the distance between the outer annular flow guide 91 and the coating 5 to the axial height of the capsule 200 is preferably 0.1 to 0.5, and can be adjusted according to the axial height of the capsule.

In particular, the guiding hole 911 formed in the outer guiding portion 91 is an axially downward flared hole, as shown in fig. 17, so that the fluid passing through the guiding hole 911 is more uniformly dispersed and covers the cross section of the beverage extracting cavity D1. The aperture of the smallest through hole of the flaring-shaped flow guide hole 911 should be not less than 0.05mm and not more than 1mm, and the value thereof is related to the diameter of the capsule, for example, in a commercial capsule with the maximum diameter of 70mm, the aperture of the flow guide hole 911 may be 1 mm. In addition. The guide hole 911 is preferably conical and has a conical angle of not more than 80 °. The cone angle should not be too large, otherwise the fluid will not flow along the inner cone wall.

In the present embodiment, the number of the guide holes 911 provided in the outer ring guide 91 is preferably not less than 3 and not more than 100 as required for the flow dividing effect.

Specifically, referring to fig. 15A and 15B, the outer annular flow guide portion 91 includes a plurality of concentric flow guide hole rings arranged at intervals in the radial direction, and each flow guide hole ring includes a plurality of flow guide holes 911 arranged at intervals in the circumferential direction; wherein, the hole circle radial distance between two arbitrary adjacent water conservancy diversion hole circles equals, or the radial distance L1 of first hole circle and the radial distance L2 of second hole circle of two arbitrary satisfies:or

In the water conservancy diversion hole circle of same round, the water conservancy diversion hole circumference interval between two arbitrary adjacent water conservancy diversion holes 911 equals, or the first water conservancy diversion hole circumference interval C1 of two arbitrary satisfies with second water conservancy diversion hole circumference interval C2:or

The capsule 200 described above may be applied to a beverage machine, where pressurized fluid may be injected into the capsule 200 by an injection system. For example, by injection through a hollow tube 10 as shown in fig. 1 and 2.

Preferably, the beverage maker comprises a hollow tube 10 for piercing the cover film 5 to extend into the capsule 200, and the water outlet end surface G of the piercing end of the hollow tube 10 is formed as an inclined surface having a vertical inclination angle of preferably 20 ° to 70 °, according to the actual required design.

Obviously, the beverage machine after the film cutting mechanism 100 and the capsule 200 are applied has smoother, balanced and continuous flowing of the beverage, no accumulation and better user experience.

It should be noted that the capsule in the above embodiments with reference to the drawings is positioned vertically upwards, i.e. the capsule inlet is open upwards at the top, but it is clear that the invention is not limited thereto, the capsule may also be positioned laterally, i.e. the capsule inlet is in the form of a side opening, etc.

The consumable in the capsule chamber D may be soluble coffee powder, insoluble tea leaves, or a filter element, and is not limited to the beverage extraction type capsule shown in the figure.

In particular, other constructions and functions of the capsule and beverage machine according to embodiments of the present invention are known to those of ordinary skill in the art and are not described herein in detail in order to reduce redundancy.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction, and various combinations that are possible in the present invention are not described separately in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.