WO2023197801A1 - 刺破机构及其饮品机 - Google Patents

刺破机构及其饮品机 Download PDF

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Publication number
WO2023197801A1
WO2023197801A1 PCT/CN2023/080788 CN2023080788W WO2023197801A1 WO 2023197801 A1 WO2023197801 A1 WO 2023197801A1 CN 2023080788 W CN2023080788 W CN 2023080788W WO 2023197801 A1 WO2023197801 A1 WO 2023197801A1
Authority
WO
WIPO (PCT)
Prior art keywords
piercing
piece
way valve
liquid outlet
follower
Prior art date
Application number
PCT/CN2023/080788
Other languages
English (en)
French (fr)
Inventor
毛磊
黄战辉
Original Assignee
苏州咖乐美咖啡机科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州咖乐美咖啡机科技有限公司 filed Critical 苏州咖乐美咖啡机科技有限公司
Publication of WO2023197801A1 publication Critical patent/WO2023197801A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
    • A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
    • A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus

Definitions

  • the present application belongs to the technical field of capsule beverage machines, and in particular relates to a piercing mechanism and its beverage machine.
  • Capsule coffee is a kind of coffee powder that has been ground and is stored in a pre-packaged manner; when making this kind of capsule coffee, the ground coffee powder is sealed in a space such as a bag container or an aluminum can, and at the same time in the space Filling with non-toxic inert gas can extend the shelf life and re-sterilize.
  • the puncture assembly generally includes a puncture needle and a fixed seat.
  • the fixed seat is fixedly connected to the driving mechanism.
  • the puncture needle in the capsule coffee machine used for bagged capsules generally adopts a curved shape. The puncture tip of the puncture needle passes through the center of the fixed seat.
  • the other end is clamped between the fixed base and the driving mechanism and extends to the outside, so that it can be connected to the external hot or cold water pipeline.
  • the fixed base moves up and down driven by the driving mechanism, thereby driving the puncture needle to puncture the mouth of the capsule.
  • the external hot or cold water pipe provides water flow, and injects coffee into the capsule through the water channel of the puncture needle to extract coffee.
  • the water channel is located inside the puncture needle itself.
  • the water channel cross-section is small and is limited to the volume of the puncture needle itself. It is difficult to change the water channel cross-section, which increases the size of the water channel.
  • the water flow resistance increases the pressure of the water system during the coffee manufacturing process, which means it has higher requirements on the pressure and power source of the water supply system, limiting the use of low-pressure equipment.
  • This application provides a piercing mechanism that requires little water pressure and power source, can be adapted to low-pressure equipment, has high parts utilization and is simple in structure.
  • This application also provides a beverage machine, which adopts the above-mentioned piercing mechanism and can be adapted to more types of water supply equipment and has a wider application range.
  • a piercing mechanism provided by a technical solution of the present application includes a driving mechanism, a follower and a piercing piece for docking with the capsule mouth.
  • the driving mechanism Connected to and driven by the driven member, the piercing member is installed at one end of the driven member and moves back and forth driven by the driven member; the driven member is A linear hollow structure with openings at both ends. The openings at both ends are respectively a liquid inlet and a liquid outlet.
  • the hollow structure is a liquid channel.
  • the piercing piece is docked with the liquid outlet, and the piercing piece is connected with the inlet.
  • the liquid port and the hollow structure are fluidly connected.
  • the beneficial effect of this technical solution is that a part of the transmission structure, that is, the linear hollow structure of the follower is used as a water flow channel.
  • the follower has a larger internal space than the piercing part body, so compared with the traditional
  • the waterway exists in the body of the curved piercing piece.
  • the waterway is located in the follower and is linear, which increases the cross-sectional area of the waterway and reduces the resistance of the passing water flow.
  • this structure can be adapted to low-pressure water supply equipment and is suitable for The range is wider; and this structure uses a part of the transmission structure, that is, the space limited by the inner circumferential surface, as a water flow channel, widening the width of the water flow channel without adding other parts, and does not affect the transmission of the transmission structure.
  • the structure is simple and High parts utilization rate.
  • the piercing piece has a linear hollow structure, which can further reduce the water flow resistance and reduce the water pressure of the waterway system.
  • the diameter of the piercing piece is no larger than the diameter of the capsule mouth, ensuring that the piercing piece can be smoothly connected to the capsule mouth.
  • the driven member is a screw, and an external thread is provided on the outer circumferential surface of the screw;
  • the driving mechanism includes a drive motor and an output shaft, and the output shaft is provided with a through channel for the screw to pass through, and the An internal thread meshing with the screw is provided on the inner peripheral surface of the through channel.
  • This plan uses screw linear transmission, which has a simple structure and high transmission efficiency.
  • the outer peripheral surface of the driven part is used for transmission, and the space limited by the inner peripheral surface is used as a waterway. This does not affect the transmission function and increases the function of the water flow channel. That is, the transmission structure and water flow channel are integrated into a single part, resulting in high structural utilization.
  • a grating is fixed at one end of the output shaft adjacent to the liquid outlet, and an encoder is provided between the drive motor and the output shaft.
  • the encoder identifies the number of rotation steps of the grating to control the The screw moves to the preset position.
  • the piercing mechanism also includes a mounting seat, the mounting seat is provided with a receiving space for accommodating the piercing member, the head of the piercing member extends out of the mounting seat; the follower is close to A flange is provided at the end of the liquid outlet, and the flange is connected to the mounting seat, so that the head of the piercing member extends into the follower to dock with the liquid outlet.
  • a number of protruding ribs are provided on the inner peripheral surface of the follower.
  • the head of the piercing piece is in contact with the liquid outlet. Said several protruding ribs are against each other.
  • the head of the piercing element includes at least two first annular steps and a second annular step with different diameters; wherein the first annular step abuts the protruding ribs, and the second annular step is in the The liquid outlet is sealed, and the diameter of the second annular step is larger than the diameter of the first annular step; at the liquid outlet, the inner circumferential surface of the follower is provided with a circumferential recess to accommodate the second annular step. groove, the outer diameter of the circumferential groove being the same as the diameter of the second annular step.
  • annular sealing groove is provided between the first annular step and the second annular step, and a flexible sealing ring is provided in the annular sealing groove.
  • the flexible sealing ring interferes with the driven member. inside the component and fit with the inner circumferential surface of the driven component. Ring seals can further improve fluid sealing performance.
  • At least the inner peripheral surface of the follower and the inner peripheral surface of the piercing member are made of food-grade contact materials to ensure the safety of drinking drinks.
  • the piercing piece also includes a pressure plate that is in limited cooperation with the mouth of the capsule bag.
  • the free end of the piercing piece is formed with a piercing tip.
  • the pressure plate and the piercing tip are located on the same side of the middle surface of the capsule bag.
  • the surface is the surface defined by the axis of the piercing piece and the installation direction of the capsule package.
  • the free end of the piercing piece is formed with a piercing tip, the piercing tip is located between the axis of the piercing piece and the outer peripheral surface of the piercing piece; the piercing tip is relative to the piercing piece.
  • the axis is closer to the outer circumferential surface of the piercing element; the piercing tip is located between the axis of the piercing element and the inner circumferential surface of the piercing element.
  • the piercing tip is formed by the intersection of two bevels at the free end of the piercing member, the two bevels including a first bevel passing through the axis and a second bevel spaced apart from the axis, the first bevel being relative to a horizontal plane
  • the inclination angle is smaller than the inclination angle of the second incline relative to the horizontal plane.
  • the axis of the piercing member is the same as the axis of the follower, which increases the fluidity of the water flow of the piercing mechanism, further reduces the resistance of the water flow, and reduces the water pressure of the waterway system.
  • Another embodiment of the present application provides a beverage machine, including the piercing mechanism described in any one of the above.
  • the beverage machine also includes a diverter valve connected between the water supply source and the liquid inlet.
  • the diverter valve can selectively allow or disconnect the water supply to the liquid inlet.
  • the diverter valve and the liquid inlet A one-way valve is installed between the ports, and the one-way valve The valve allows one-way communication from the diverter valve to the liquid inlet.
  • One end of the follower provided with the liquid inlet is sealingly connected to the one-way valve transfer pipe, the water outlet end of the water pipe led from the diverter valve is sealingly connected to the one-way valve seat, the one-way valve transfer pipe and the one-way valve
  • the valve seat is sealed and connected, and the one-way valve is installed in the space formed by the one-way valve transfer pipe and the one-way valve seat.
  • the beneficial effects of this application mainly include: utilizing a part of the transmission structure, that is, the linear hollow structure of the follower as a water flow channel, and the follower has a larger internal space than the piercing part body , therefore, compared with the traditional mechanism where the waterway exists in the curved body of the piercing piece, the waterway is located in the follower and is linear, which increases the cross-sectional area of the waterway, reduces the resistance of the passing water flow, and can be adapted Low-pressure water supply equipment has a wider application range; and this structure uses a part of the transmission structure, that is, the space limited by the inner circumferential surface, as a water flow channel, with a simple structure and high parts utilization rate.
  • Figure 1 is a schematic three-dimensional structural diagram of a piercing mechanism provided in Embodiment 1 of the present application.
  • FIG. 2 is a top view of the puncturing mechanism in FIG. 1 .
  • Figure 3 is a cross-sectional view of the puncturing mechanism in Figure 2 along the A-A direction.
  • FIG. 4 is a schematic diagram of the installation structure of the follower and the piercing part in the piercing mechanism in FIG. 1 .
  • FIG. 5 is a cross-sectional view along the B-B direction of FIG. 4 .
  • FIG. 6 is an enlarged schematic diagram of part a in FIG. 5 .
  • FIG. 7 is a schematic three-dimensional structural diagram of the follower in FIG. 4 .
  • FIG. 8 is a cross-sectional view along the C-C direction of FIG. 7 .
  • FIG. 9 is a schematic three-dimensional structural diagram of the mounting base in FIG. 4 .
  • FIG. 10 is a cross-sectional view of the mounting base in FIG. 9 .
  • Fig. 11 is a schematic structural diagram of the piercing member in Fig. 4.
  • FIG. 12 is a schematic three-dimensional structural diagram of a part of the beverage machine according to Embodiment 1 of the present application.
  • FIG. 13 is a cross-sectional view along the DD direction in FIG. 12 .
  • Embodiment 1 of the present application provides a piercing mechanism 1, and Figures 1 to 3 show its structural schematic diagram. Please refer to Figures 1 to 3 in conjunction with each other.
  • the piercing mechanism 1 of this embodiment includes a driving mechanism 10, a driven member 11 and a piercing member 12 for docking with the capsule mouth.
  • the driving mechanism 10 and the driven member 11 are connected and connected.
  • the follower 11 is driven for transmission, and the piercing member 12 is installed at one end of the follower 11 and realizes reciprocating motion driven by the follower 11 .
  • the driving mechanism 10 and the driven member 11 realize transmission through threaded connection.
  • the driving mechanism 10 and the driven member 11 can also be connected through gear transmission, crank transmission or hydraulic transmission, which is not limited in this application.
  • the driving mechanism 10 in this embodiment includes a driving motor 100 and an output shaft 101.
  • the driving motor 100 drives the output shaft 101 to rotate.
  • the driving method may be that the output end of the driving motor 100 is directly or indirectly connected to the output shaft 101.
  • driving is achieved through indirect connection.
  • the drive motor 100 and the output shaft 101 are indirectly connected through a gearbox.
  • the gearbox is provided with an input shaft and an output nut.
  • the input shaft is connected to the drive motor, and the gear changes speed.
  • the input shaft, output nut and output shaft 101 of the box are all provided with external teeth, and the transmission from the drive motor 100 to the output shaft 101 is achieved through the mutual meshing of the external teeth.
  • the output nut may be a multi-stage output nut.
  • the output shaft 101 is provided with a through channel for the driven member 11 to pass through.
  • the inner peripheral surface of the through channel is provided with an internal thread that meshes with the driven member 11.
  • the driven member 11 in this embodiment is a screw, and the screw is The outer peripheral surface is provided with external threads.
  • the screw is a linear hollow structure 110 with openings at both ends. The openings at both ends are a liquid inlet 111 and a liquid outlet 112.
  • the hollow structure 110 is a liquid channel.
  • the piercing member 12 is docked with the liquid outlet 112 and connected with the liquid inlet. 111.
  • the hollow structure 110 is fluid-conducted.
  • the piercing piece 12 is also a hollow structure. As shown in FIG. 11 , preferably, the piercing piece 12 in this embodiment is a linear hollow structure, which can further reduce the water flow resistance compared to the curved piercing needle. In other embodiments, the piercing member 12 may also have a curved hollow structure, as long as the tip of the piercing member 12 can be aligned with the placement position of the bagged capsule below.
  • the inner diameter of the screw and the inner diameter of the piercing member 12 in this embodiment can be as large as possible, which further reduces the waterway resistance; in addition, the piercing member 12 also needs to meet the requirement that its diameter cannot be larger than the diameter of the capsule mouth. Conditions to ensure that the piercing piece 12 can be smoothly inserted into the mouth of the capsule bag.
  • the drive motor 100 drives the output shaft 101 to rotate, thereby causing the screw engaged with the output shaft 101 to reciprocate, driving the piercing piece 12 located at one end of the screw to move back and forth, piercing the capsule located below the piercing piece 12 and resetting it;
  • hot or cold water enters from the liquid inlet 111 of the screw, flows through the hollow structure 110 and flows out from the liquid outlet 112, reaches the piercing member 12, and then enters the inside of the capsule to achieve coffee brewing and extraction.
  • the axis of the piercing member 12 is the same as the axis of the driven member 11, and the water flow flows straightly into the piercing member 12 from the hollow structure 110, maintaining the straightness of the water flow in the driven member 11 and the water flow in the piercing member 12, thereby The fluidity of the water flow of the puncture mechanism 1 is increased, which can further reduce the water flow resistance and reduce the water pressure of the waterway system.
  • a grating 21 is fixed at one end of the output shaft 101 adjacent to the liquid outlet 112.
  • An encoder 22 is provided between the drive motor 100 and the output shaft 101.
  • the encoder 22 identifies the number of rotation steps of the grating 21 to control the screw movement. to the preset position. After the beverage machine is powered on, the screw first finds change, returns to the reset position and then moves to the upper standby position. When making drinks, the screw moves downward to the lower working position. After the drink is made, the screw moves upward and returns to the upper standby position.
  • the encoder 22 By using the encoder 22 to identify the number of rotation steps of the grating 21 to control the movement of the screw, the screw moves up and down more reliably.
  • the mounting base 13 is used to realize the docking between the two. Please refer to the schematic structural diagram of the assembly of the screw and the mounting base in Figures 4 to 5, the structural schematic diagram of the screw in Figures 6 to 8, and the structural schematic diagram of the mounting base in Figures 9 to 10. Inside the mounting base 13 of this embodiment An accommodation space 130 is provided for accommodating the piercing piece 12. The head of the piercing piece 12 extends out of the mounting base 13; a flange 113 is provided at the end of the screw near the liquid outlet 112, and a flange 113 is provided on the mounting base 13.
  • a plurality of bolt holes 131 and the flange 113 are interconnected with the mounting base 13 through riveting of the bolts 14 and the bolt holes 131, so that the head of the piercing member 12 extends into the screw rod and docks with the liquid outlet 112.
  • protruding ribs 114 are provided on the inner peripheral surface of the screw at one end close to the liquid outlet 112.
  • the head of the piercing piece 12 is inserted into the screw until it abuts against the protruding ribs 114, prompting the user to install it in place.
  • the protruding ribs 114 may not be provided, and the head of the piercing member 12 only needs to be inserted into the screw rod.
  • the head of the piercing piece 12 in this embodiment includes two annular steps with different diameters, denoted as the first step.
  • a circular step 120 and The second annular step 121 are annular steps with different diameters.
  • the first annular step 120 abuts the protruding ribs 114
  • the second annular step 120 is sealed at the liquid outlet 112
  • the diameter of the second annular step 121 is larger than the diameter of the first annular step 120; at the liquid outlet 112,
  • the inner circumferential surface of the screw is provided with a circumferential groove 115 for accommodating the second annular step 121.
  • the outer diameter of the circumferential groove 115 is the same as the diameter of the second annular step 121, thereby ensuring that the second annular step 121 can meet the liquid outlet 112 well. Make a seal.
  • an annular sealing groove is provided between the first annular step 120 and the second annular step 121.
  • a flexible sealing ring 122 is provided in the annular sealing groove. The flexible sealing ring 122 interferes with the Inside the screw, it fits the inner circumferential surface of the screw. It should be noted that in other embodiments, sealing can also be achieved by simply adapting the head diameter of the piercing member to the diameter of the follower liquid outlet 112 .
  • the screw and puncture part in this embodiment are made of food-grade contact materials.
  • the screw is an injection molded part and can be made of PPA, PA66 (nylon) and other materials.
  • the puncture needle is a machined metal part and can be made of stainless steel such as 304 stainless steel. Or 316 stainless steel, etc. to ensure the safety of drinking drinks. In other embodiments, it is at least necessary to ensure that the inner peripheral surface of the screw and the piercing member forming the liquid passage is the above-mentioned food-grade contact material.
  • the puncture mechanism also includes a bracket 5 for guiding the installation of the capsule package and a pressure plate 52 movable on the bracket.
  • the pressure plate 52 is in limited cooperation with the capsule package mouth 92 .
  • the bracket 5 is provided with a chute 51 for guiding the capsule package 9.
  • the pressure plate 52 is arranged on the sliding path of the capsule package 9 and is biased by elastic force to extend toward the capsule package 9.
  • the capsule package 9 moves along the chute 51 to push the pressure plate. 52 retracts against the elastic force, and the capsule package 9 reaches the target position after crossing the pressure plate 52.
  • the pressure plate 52 resets under the elastic force and keeps the capsule package 9 at the target position.
  • the free end of the piercing member 12 is formed with a piercing tip 125.
  • the capsule package 9 will be slightly deflected when pressed by the pressure plate 52. In this way, the capsule package mouth 92 will be tilted relative to the piercing tip 125, which may cause hot drinks to be made. Hot water splashes.
  • the pressure plate 52 and the piercing tip 125 can be arranged to be located on the same side of the middle surface M of the capsule bag, where the middle surface M of the capsule bag is the surface defined by the axis of the piercing piece and the installation direction of the capsule bag.
  • the force direction of the capsule package 9 is opposite to the top-down inclination direction of the puncture tip 125, which avoids the exposure of the exit of the puncture tip 125 due to the inclination of the capsule package 9, thereby preventing hot water from splashing when making drinks.
  • the piercing tip 125 is located between the axis of the piercing part 12 and the outer peripheral surface of the piercing part 12. Compared with the traditional piercing tip disposed on the outer peripheral surface of the piercing part, it can delay the damage caused by long-term use. The wear of the piercing tip extends the service life of the piercing piece 12.
  • the piercing tip 125 is closer to the outer peripheral surface of the piercing member 12 relative to the axis of the piercing member 12, so as to more easily pierce the capsule opening 92.
  • the piercing tip 125 is located between the axis of the piercing member 12 and the inner circumferential surface of the piercing member 12. In this way, the tip extends along between the outer circumferential surface and the inner circumferential surface of the piercing member 12, which extends The service life of the piercing piece 12 is long, and it can reliably pierce the capsule package. Mouth 92.
  • the piercing tip 125 is formed by the intersection of two inclined planes at the free end of the piercing member 12.
  • the two inclined planes include a first inclined plane 126 passing through the axis and a second inclined plane 127 spaced apart from the axis.
  • the first inclined plane 126 is opposite to the first inclined plane 126.
  • the inclination angle with respect to the horizontal plane is smaller than the angle of the second incline surface 127 with respect to the horizontal plane.
  • This application also provides a beverage machine equipped with the piercing mechanism in the above-mentioned Embodiment 1.
  • the beverage machine also includes a diverter valve connected between the water supply source and the liquid inlet 111.
  • the diverter valve can selectively allow or disconnect the water supply to the liquid inlet 111.
  • the diverter valve and the liquid inlet A one-way valve 60 is provided between the ports, and the one-way valve 60 allows one-way communication from the diverter valve to the liquid inlet.
  • the one-way valve 60 is disposed adjacent to the liquid inlet 111 .
  • one end of the follower 12 provided with the liquid inlet 111 is sealingly connected to the one-way valve transfer pipe 61
  • the water outlet end of the water pipe led from the diverter valve is sealingly connected to the one-way valve seat 62
  • the one-way valve transfer pipe 61 and the one-way valve seat 62 is sealed and connected
  • the one-way valve 60 is installed in the space formed by the one-way valve transfer pipe 61 and the one-way valve seat 62.
  • the one-way valve transfer pipe 61 and the follower 11 can be further fixed with a cable tie.
  • the one-way valve seat 62 and the water pipe can be further fixed with a cable tie.
  • the one-way valve transfer pipe 61 and the one-way valve seat 62 They can also be further fixed with cable ties, so that the installation of the one-way valve 60 is more reliable and water leakage will not occur due to the movement of the follower 12 .

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

本申请提供的刺破机构，包括驱动机构、从动件和刺破件，驱动机构与从动件相连并驱动从动件传动，刺破件安装在从动件的一端，并在从动件的带动下往复运动；从动件为直线式两端开口的中空结构，两端开口分别为进液口和出液口，中空结构为液体通道，刺破件与出液口对接，并与进液口、所述中空结构流体导通。该技术方案的有益效果在于，将传动结构的一部分即从动件直线式的中空结构利用为水流通道，从动件相较于刺破件本体具有较大的内部空间，因而相较于传统的水路设于弯曲状的刺破件本体，增大了水路的截面面积，减小了通过的水流阻力，可适配低耐压供水设备。还提供一种饮品机，因采用上述刺破机构，适用范围更广。

Description

刺破机构及其饮品机 技术领域
本申请属于胶囊饮品机的技术领域，尤其涉及一种刺破机构及其饮品机。
背景技术
随着人们生活水平的提高，各类冲泡类饮品例如咖啡越来越受到大众消费者的喜爱。胶囊咖啡机作为一种新兴的冲煮咖啡的机器，以较为方便操作等优点得到了越来越多消费者的青睐。
胶囊咖啡是一种将已经研磨好的咖啡粉，以预包装的方式进行存储；制作这种胶囊咖啡时，将研磨好的咖啡粉密封在袋装容器或铝罐等空间内，同时在空间中充入无毒的惰性气体起到延长保质期和再次灭菌的作用。
对于咖啡容器为袋装的胶囊咖啡机，现有技术中，其通常包括刺破组件，刺破组件用来刺穿袋装胶囊的包口，然后将热水或冷水输送到袋装胶囊中萃取咖啡，咖啡液经袋装胶囊的底部渗透流出，实现咖啡的冲泡。刺破组件一般包含刺破针和固定座，固定座与驱动机构固定连接，袋装胶囊所用胶囊咖啡机中的刺破针一般采用弯曲形状，刺破针的刺破尖端处穿过固定座中心，另一端夹持于固定座与驱动机构之间并延伸至外部，从而能与外界热水或冷水管路导通。工作时，固定座在驱动机构的驱动下进行升降运动，从而带动刺破针刺破胶囊包口，外界热水或冷水管路提供水流，并经刺破针的水路通道注入胶囊内萃取咖啡。现有技术的这种弯曲状刺破针，水路通道位于刺破针本身内部，其水路截面小，且限于刺破针本身的体积，很难改变其水路截面，这就增大了水路通道中的水流阻力，在咖啡制造过程中增大了水路系统的压力，也即其对供水系统的压力和动力源具有较高的要求，限制了选择低耐压设备的使用。
发明内容
本申请提供一种刺破机构，对水压和动力源的要求小，可适配低耐压设备，且零件利用率高、结构简单。
本申请还提供一种饮品机，因采用上述刺破机构，能够适配更多类型的供水设备，适用范围更广。
本申请的其他目的和优点可以从本申请所揭露的技术特征中得到进一步的了解。
为达上述之一或部分或全部目的或其他目的，本申请一技术方案所提供的刺破机构，包括驱动机构、从动件和用于与胶囊包口对接的刺破件，所述驱动机构与所述从动件相连并驱动所述从动件传动，所述刺破件安装在所述从动件的一端，并在所述从动件的带动下往复运动；所述从动件为直线式两端开口的中空结构，两端开口分别为进液口和出液口，中空结构为液体通道，所述刺破件与所述出液口对接，所述刺破件与所述进液口、所述中空结构流体导通。该技术方案的有益效果在于，将传动结构的一部分即从动件直线式的中空结构利用为水流通道，从动件相较于刺破件本体具有较大的内部空间，因而相较于传统的水路存在于弯曲状的刺破件本体的机构，水路位于从动件中并为直线式，增大了水路的截面面积，减小了通过的水流阻力，可适配低耐压供水设备，适用范围更广；且该结构是将传动结构的一部分即内周面限定的空间利用为水流通道，在不增加其他零件的情况下拓宽水流通道的宽度，也不影响传动结构的传动，结构简单、零件利用率高。
所述刺破件为直线式中空结构，可以进一步减小水流阻力，降低水路系统的水压。
所述刺破件的直径不大于胶囊包口的直径，保证刺破件可以顺利与胶囊包口对接。
所述从动件为螺杆，所述螺杆的外周面上设置有外螺纹；所述驱动机构包括驱动电机和输出轴，所述输出轴上设置有供所述螺杆穿过的贯通通道，所述贯通通道内周面上设置有与所述螺杆相啮合的内螺纹。该方案中选用螺杆直线传动，结构简单，传动效率高，且将从动件的外周面用于传动，内周面限定的空间作为水路，既不影响传动功能，又增加了水流通道的功能，即将传动结构与水流通道整合为了单一零件，结构利用率高。
所述输出轴临近所述出液口的一端固定有光栅格，所述驱动电机和输出轴之间设置有编码器，所述编码器识别所述光栅格的转动步数以控制所述螺杆运动到预设位置。
所述刺破机构还包括安装座，所述安装座内设置有用于容纳所述刺破件的容置空间，所述刺破件的头部伸出所述安装座；所述从动件靠近所述出液口的端部设置有法兰，所述法兰与所述安装座相连，使得所述刺破件的头部伸入所述从动件中与所述出液口对接。通过法兰对接，可以保证刺破件与从动件之间的稳固安装，且便于操作。
在靠近出液口的一端，所述从动件的内周面上设有若干突出筋条，所述刺破件在与所述出液口对接时，所述刺破件的头部与所述若干突出筋条相抵靠。通过突出筋条的设置，在刺破件伸入从动件中时，能够提示用户是否安装到位，避免安装不到位可能造成的刺破件在工作过程中的脱落、或刺破件伸入过多使得尖端在工作时触碰不到胶囊的情况的发生。
所述刺破件的头部至少包括两个直径不同的第一环形台阶和第二环形台阶；其中，所述第一环形台阶抵靠所述突出筋条，所述第二环形台阶在所述出液口处密封，所述第二环形台阶的直径大于所述第一环形台阶的直径；在出液口处，所述从动件的内周面开设有容纳所述第二环形台阶的周向凹槽，所述周向凹槽的外径与所述第二环形台阶的直径相同。通过两级台阶的密封，可以更好地实现流体密封性，避免刺破件与出液口对接处发生液体渗漏。
进一步地，所述第一环形台阶和所述第二环形台阶之间设有环形密封槽，所述环形密封槽内设置有柔性密封圈，所述柔性密封圈过盈卡和在所述从动件内，与所述从动件的内周面贴合。环形密封圈可以进一步提高流体密封性能。
至少所述从动件的内周面和所述刺破件的内周面选用食品级触材，保证饮品饮用的安全性。
进一步地，还包括与胶囊包口限位配合的压板，所述刺破件的自由端形成有刺破尖端，所述压板和刺破尖端位于胶囊包中面的同一侧，所述胶囊包中面为所述刺破件的轴线与胶囊包安装方向定义的面。
所述刺破件的自由端形成有刺破尖端，所述刺破尖端位于所述刺破件的轴线和刺破件的外周面之间；所述刺破尖端相对于所述刺破件的轴线更靠近所述刺破件的外周面；所述刺破尖端位于所述刺破件的轴线和刺破件的内周面之间。
所述刺破尖端由所述刺破件的自由端的两个斜面相交形成，两个斜面包括穿过所述轴线的第一斜面以及与轴线间隔的第二斜面，所述第一斜面相对于水平面的倾斜角度小于所述第二斜面相对于水平面的倾斜角度。
所述刺破件的轴线与所述从动件的轴线相同，增加了刺破机构的水流的流畅性，可以进一步减小水流阻力，降低水路系统的水压。
本申请另一实施例提供一种饮品机，包括上述任一项所述的刺破机构。
所述饮品机还包括连接在供水源和进液口之间的分向阀，所述分向阀可选择地允许或断开到所述进液口的供水，所述分向阀和进液口之间设置单向阀，所述单向 阀允许自分向阀到所述进液口的单向连通。
所述从动件设置进液口的一端密封连接单向阀转接管，自所述分向阀引出的水管的出水端密封连接单向阀座，所述单向阀转接管和所述单向阀座密封连接，所述单向阀安装在所述单向阀转接管和所述单向阀座形成的空间内。
与现有技术相比，本申请的有益效果主要包括：将传动结构的一部分即从动件直线式的中空结构利用为水流通道，从动件相较于刺破件本体具有较大的内部空间，因而相较于传统的水路存在于弯曲状的刺破件本体的机构，水路位于从动件中并为直线式，增大了水路的截面面积，减小了通过的水流阻力，可适配低耐压供水设备，适用范围更广；且该结构将传动结构的一部分即内周面限定的空间利用为水流通道，结构简单、零件利用率高。
为让本申请的上述和其他目的、特征和优点能更明显易懂，下文特举优选实施例，并配合附图，作详细说明如下。
附图说明
为了更清楚地说明本申请具体实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例一提供的刺破机构的立体结构示意图。
图2为图1中的刺破机构的俯视图。
图3为图2中的刺破机构沿A-A方向的剖视图。
图4为图1中的刺破机构中的从动件和刺破件的安装结构示意图。
图5为图4沿B-B方向的剖视图。
图6为图5中的a部分的放大示意图。
图7为图4中的从动件的立体结构示意图。
图8为图7沿C-C方向的剖视图。
图9为图4中的安装座的立体结构示意图。
图10为图9中的安装座的剖视图。
图11为图4中的刺破件的结构示意图。
图12为本申请实施例一涉及的饮品机的一部分的立体结构示意图。
图13为图12中沿D-D方向的剖视图。
具体实施方式
有关本申请的前述及其他技术内容、特点与功效，在以下配合参考图式的一优选实施例的详细说明中，将可清楚的呈现。以下实施例中所提到的方向用语，例如：上、下、左、右、前或后等，仅是参考附加图式的方向。因此，使用的方向用语是用来说明并非用来限制本申请。
以冲泡萃取咖啡为例，本申请实施例一提供了一种刺破机构1，图1至图3示出了其结构示意图。请结合参考图1至图3，本实施例的刺破机构1包括驱动机构10、从动件11和用于与胶囊包口对接的刺破件12，驱动机构10和从动件11相连并驱动从动件11传动，刺破件12安装在从动件11的一端，并在从动件11的带动下实现往复运动。
本实施例中的驱动机构10和从动件11通过螺纹连接实现传动。在其他实施例中，驱动机构10和从动件11还可以通过齿轮传动、曲柄传动或液压传动等方式实现传动连接，本申请对此不做限定。
具体的，本实施例中的驱动机构10包括驱动电机100及输出轴101，驱动电机100驱动输出轴101转动，其驱动方式可以是驱动电机100的输出端与输出轴101直接或间接相连。本实施例中通过间接相连的方式实现驱动，具体为驱动电机100与输出轴101之间通过齿轮变速箱间接相连，齿轮变速箱设有输入轴和输出螺母，输入轴与驱动电机相连，齿轮变速箱的输入轴、输出螺母以及输出轴101上均开设有外齿，通过外齿之间的相互啮合实现驱动电机100至输出轴101的传动。具体的，输出螺母可以为多级输出螺母。
输出轴101上设置有供从动件11穿过的贯通通道，贯通通道的内周面上设有与从动件11相啮合的内螺纹，本实施例中的从动件11为螺杆，螺杆的外周面上设置有外螺纹。螺杆为直线式两端开口的中空结构110，两端开口分别为进液口111和出液口112，中空结构110为液体通道，刺破件12与出液口112对接，并与进液口111、中空结构110流体导通。
刺破件12也为中空结构，结合参考图11所示，优选的，本实施例中的刺破件12为直线式中空结构，相较于弯管式刺破针，可以进一步降低水流阻力。在其他实施例中，刺破件12也可以为弯曲式中空结构，只需刺破件12的尖端能够对准下方袋装胶囊放置位置即可。
需要说明的是，在螺杆和刺破件尺寸、安装空间的限制下，在满足基本传动功 能实现的条件下，本实施例的螺杆的内径和刺破件12的内径可以尽可能的大，也进一步降低水路阻力；此外，刺破件12还需要满足其直径不能大于胶囊包口直径的条件，以保证刺破件12能够顺利插入胶囊包口中。
工作时，驱动电机100带动输出轴101旋转，从而使得与输出轴101相啮合的螺杆往复运动，带动位于螺杆一端的刺破件12来回运动，刺破位于刺破件12下方的胶囊及复位；刺破胶囊时，热水或冷水从螺杆的进液口111进入，流经中空结构110并自出液口112流出，到达刺破件12内，从而进入胶囊内部实现咖啡的冲泡萃取。优选地，刺破件12的轴线与从动件11的轴线相同，水流从中空结构110直线流入刺破件12，保持了从动件11中水流与刺破件12中水流的直线度，从而增加了刺破机构1的水流的流畅性，可以进一步减小水流阻力，降低水路系统的水压。
其中，输出轴101临近出液口112的一端固定有光栅格21，驱动电机100和输出轴101之间设置有编码器22，编码器22识别光栅格21的转动步数以控制螺杆运动到预设位置。饮品机通电后螺杆先找零，回到重置位置后运动到在上方的待机位置，制作饮品时螺杆向下运动到下方的工作位置，饮品制作完后向上运动回到上方的待机位置。通过编码器22识别光栅格21的转动步数来控制螺杆的运动，螺杆上下移动更加可靠。
为实现刺破件12与螺杆的稳固对接，本实施例中通过安装座13实现两者的对接。请结合参考图4至图5的螺杆与安装座的组装结构示意图、图6至图8螺杆的结构示意图、以及图9至图10中的安装座的结构示意图，本实施例的安装座13内设置有用于容纳刺破件12的容置空间130，刺破件12的头部伸出安装座13的外部；螺杆靠近出液口112的端部设置有法兰113，安装座13上开设有若干螺栓孔131，法兰113通过螺栓14与螺栓孔131的铆合实现与安装座13的相互连接，使得刺破件12的头部伸入螺杆中与出液口112对接。
为了方便用户知晓是否对刺破件12的安装已到位，如图6中所示，本实施例中，在靠近出液口112的一端，螺杆的内周面上设有数根突出筋条114，刺破件12在与出液口112对接时，刺破件12的头部插入螺杆中直至与突出筋条114相抵靠时，提示用户安装到位。在其他实施例中，也可以不设置突出筋条114，只需将刺破件12的头部插入螺杆中。
且，为了保证刺破件12与出液口112的流体密封性，如图11中所示，本实施例中的刺破件12的头部包括了两级直径不同的环形台阶，记为第一环形台阶120和 第二环形台阶121。其中，第一环形台阶120抵靠突出筋条114，第二环形台阶120在出液口112处密封，第二环形台阶121的直径大于第一环形台阶120的直径；在出液口112处，螺杆的内周面开设有容纳第二环形台阶121的周向凹槽115，周向凹槽115的外径与第二环形台阶121的直径相同，从而保证第二环形台阶121对出液口112能后很好进行密封。此外，为进一步保证流体密封性，在第一环形台阶120和第二环形台阶121之间还设有环形密封槽，环形密封槽内设置有柔性密封圈122，柔性密封圈122过盈卡和在螺杆内部，与螺杆的内周面贴合。需要说明的是，在其他实施例中，也可以仅将刺破件的头部直径与从动件出液口112的直径相适应实现密封。
此外，本实施例中的螺杆及刺破件选用食品级触材，螺杆为注塑件，可采用PPA、PA66(尼龙)等材料，刺破针为机加工金属件，可采用不锈钢材料例如304不锈钢或316不锈钢等，从而保证饮品饮用的安全性。在其他实施例中，至少需保证螺杆及刺破件形成液体通路的内周面为上述的食品级触材。
配合参照图6和图12所示，刺破机构还包括引导胶囊包安装的支架5以及活动设置在支架上的压板52，压板52与胶囊包口92限位配合。支架5上设有引导胶囊包9的滑槽51，压板52设置在胶囊包9的滑动路径上并受弹性力偏压而朝向胶囊包9伸出，胶囊包9沿着滑槽51移动推动压板52克服弹性力缩回，胶囊包9越过压板52后到达目标位置，压板52在弹性力作用下复位并且将胶囊包9保持在目标位置。
刺破件12的自由端形成有刺破尖端125，胶囊包9受到压板52的抵压会有轻微的偏斜，这样胶囊包口92会相对于刺破尖端125倾斜，有可能会导致制作热饮时热水喷溅。为防止热水喷溅，可以将压板52和刺破尖端125设置成位于胶囊包中面M的同一侧，其中，胶囊包中面M为刺破件的轴线与胶囊包安装方向定义的面。胶囊包9的受力方向与刺破尖端125自上而下的倾斜方向相反，避免了因胶囊包9的倾斜造成刺破尖端125的出口外露，从而防止制作饮品时热水喷溅。
进一步的，刺破尖端125位于刺破件12的轴线和刺破件12的外周面之间，相对于传统的刺破尖端设置在刺破件的外周面上而言，可以延缓长时间使用对刺破尖端的磨损，从而延长刺破件12的使用寿命。优选的，刺破尖端125相对于刺破件12的轴线更靠近刺破件12的外周面，以更容易刺破胶囊包口92。更优选的，刺破尖端125位于刺破件12的轴线和刺破件12的内周面之间，这样，尖部沿着刺破件12的外周面和内周面之间延伸，既延长刺破件12的使用寿命，又能够可靠的刺破胶囊包 口92。
本实施例中，刺破尖端125由刺破件12的自由端的两个斜面相交形成，两个斜面包括穿过轴线的第一斜面126以及与轴线间隔的第二斜面127，第一斜面126相对于水平面的倾斜角度小于第二斜面127相对于水平面的角度。上述刺破尖端125的构造，可以更容易的刺破胶囊包口92，同时不会对胶囊包口92造成撕裂。
本申请还提供一种饮品机，具备上述实施例一中的刺破机构。
参照图12和13，饮品机还包括连接在供水源和进液口111之间的分向阀，分向阀可选择地允许或断开到进液口111的供水，分向阀和进液口之间设置单向阀60，单向阀60允许自分向阀到进液口的单向连通。本实施例中，单向阀60临近进液口111设置。制作饮品过程中，胶囊包内部存在压力，当分向阀切换位置时，水路系统压力变化，胶囊内部压力高于水路其它位置的压力时，胶囊内的咖啡渣会发生回流，从而阻塞管路。通过设置单向阀60，保证管路中的水只能单向流动，避免压差导致的回流。
其中，从动件12设置进液口111的一端密封连接单向阀转接管61，自分向阀引出的水管的出水端密封连接单向阀座62，单向阀转接管61和单向阀座62密封连接，单向阀60安装在由单向阀转接管61和单向阀座62形成的空间内。单向阀转接管61和从动件11之间可以通过扎线带进一步固定，单向阀座62和水管之间可以通过扎线带进一步固定，单向阀转接管61和单向阀座62之间也可以通过扎线带进一步固定，从而单向阀60的安装更加可靠，不会因为从动件12的移动而产生水的泄露。
以上对本申请所提供的一种刺破机构及其饮品机进行了详细介绍，本文中应用了具体个例对本申请的结构及工作原理进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以对本申请进行若干改进和修饰，这些改进和修饰也落入本申请权利要求保护的范围内。

Claims (15)

  1. 一种刺破机构，包括驱动机构、从动件和用于与胶囊包口对接的刺破件，所述驱动机构与所述从动件相连并驱动所述从动件传动，所述刺破件安装在所述从动件的一端，并在所述从动件的带动下往复运动；
    其特征在于，所述从动件为直线式两端开口的中空结构，两端开口分别为进液口和出液口，中空结构为液体通道，所述刺破件与所述出液口对接，所述刺破件与所述进液口、所述中空结构流体导通。
  2. 根据权利要求1所述的刺破机构，其特征在于，所述刺破件为直线式中空结构。
  3. 根据权利要求1或2所述的刺破机构，其特征在于，还包括与胶囊包口限位配合的压板，所述刺破件的自由端形成有刺破尖端，所述压板和刺破尖端位于胶囊包中面的同一侧，所述胶囊包中面为所述刺破件的轴线与胶囊包安装方向定义的面。
  4. 根据权利要求3所述的刺破机构，其特征在于，所述从动件为螺杆，所述螺杆的外周面上设置有外螺纹；所述驱动机构包括驱动电机和输出轴，所述输出轴上设置有供所述螺杆穿过的贯通通道，所述贯通通道内周面上设置有与所述螺杆相啮合的内螺纹。
  5. 根据权利要求4所述的刺破机构，其特征在于，所述输出轴临近所述出液口的一端固定有光栅格，所述驱动电机和输出轴之间设置有编码器，所述编码器识别所述光栅格的转动步数以控制所述螺杆运动到预设位置。
  6. 根据权利要求1所述的刺破机构，其特征在于，所述刺破机构还包括安装座，所述安装座内设置有用于容纳所述刺破件的容置空间，所述刺破件的头部伸出所述安装座；所述从动件靠近所述出液口的端部设置有法兰，所述法兰与所述安装座相连，使得所述刺破件的头部伸入所述从动件中与所述出液口对接。
  7. 根据权利要求6所述的刺破机构，其特征在于，在靠近出液口的一端，所述从动件的内周面上设有若干突出筋条，所述刺破件在与所述出液口对接时，所述刺破件的头部与所述若干突出筋条相抵靠。
  8. 根据权利要求7所述的刺破机构，其特征在于，所述刺破件的头部至少包括两个直径不同的第一环形台阶和第二环形台阶；其中，所述第一环形台阶抵靠所述突出筋条，所述第二环形台阶在所述出液口处密封，所述第二环形台阶的直径大于 所述第一环形台阶的直径；
    在出液口处，所述从动件的内周面开设有容纳所述第二环形台阶的周向凹槽，所述周向凹槽的外径与所述第二环形台阶的直径相同。
  9. 根据权利要求8所述的刺破机构，其特征在于，所述第一环形台阶和所述第二环形台阶之间设有环形密封槽，所述环形密封槽内设置有柔性密封圈，所述柔性密封圈过盈卡和在所述从动件内，与所述从动件的内周面贴合。
  10. 根据权利要求1所述的刺破机构，其特征在于，所述刺破件的自由端形成有刺破尖端，所述刺破尖端位于所述刺破件的轴线和刺破件的外周面之间；所述刺破尖端相对于所述刺破件的轴线更靠近所述刺破件的外周面；所述刺破尖端位于所述刺破件的轴线和刺破件的内周面之间。。
  11. 根据权利要求1所述的刺破机构，其特征在于，所述刺破尖端由所述刺破件的自由端的两个斜面相交形成，两个斜面包括穿过所述轴线的第一斜面以及与轴线间隔的第二斜面，所述第一斜面相对于水平面的倾斜角度小于所述第二斜面相对于水平面的倾斜角度。
  12. 据权利要求1所述的刺破机构，其特征在于，所述刺破件的轴线与所述从动件的轴线相同。
  13. 一种饮品机，其特征在于，包括如权利要求1至12任一项所述的刺破机构。
  14. 据权利要求13所述的饮品机，其特征在于，所述饮品机还包括连接在供水源和进液口之间的分向阀，所述分向阀可选择地允许或断开到所述进液口的供水，所述分向阀和进液口之间设置单向阀，所述单向阀允许自分向阀到所述进液口的单向连通。
  15. 据权利要求14所述的饮品机，其特征在于，所述从动件设置进液口的一端密封连接单向阀转接管，自所述分向阀引出的水管的出水端密封连接单向阀座，所述单向阀转接管和所述单向阀座密封连接，所述单向阀安装在所述单向阀转接管和所述单向阀座形成的空间内。
PCT/CN2023/080788 2022-04-15 2023-03-10 刺破机构及其饮品机 WO2023197801A1 (zh)

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