Coffee powder extraction assembly

Abstract

The utility model relates to the field of coffee machines, and discloses a coffee powder extraction assembly which comprises a cup body, an end cover and an elastic plug, the end cover covers the cup body, a liquid inlet hole is formed in the end cover, a liquid outlet hole is formed in the bottom of the cup body, the elastic plug is installed on the liquid outlet hole, and a blind hole which is sunken upwards and right faces the liquid outlet hole is formed in the bottom of the elastic plug. A positioning piece used for positioning the elastic plug is arranged at the bottom of the cup body, and when the liquid outlet pressure of the liquid outlet hole is larger than the elastic force of the elastic plug, a liquid outlet gap is formed between the elastic plug and the hole wall of the liquid outlet hole. When the liquid outlet pressure of the liquid outlet hole is larger than the elastic force of the elastic plug, a liquid outlet gap is formed between the elastic plug and the hole wall of the liquid outlet hole, coffee liquid flows out, additional operation for controlling liquid outlet is not needed, and the liquid outlet state can be automatically adjusted according to the pressure. The liquid outlet gap is formed between the elastic plug and the wall of the liquid outlet hole, the liquid outlet gap cannot be expanded even if the elastic plug is used for a long time, and the service life of the elastic plug is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of coffee machines, and more particularly to coffee powder extraction components. Background Technology

[0002] In the field of coffee machine technology, the extraction efficiency of coffee, the ease of use of components, and the ease of cleaning have always been important research directions. Existing technologies, such as the utility model patent "A Coffee Powder Sealing Extraction Component" with authorization announcement number CN 215838420 U, solve the problems of sealing and preventing stains to a certain extent through the cooperation of the lid, cup body, and silicone stopper. However, as consumers' demands for coffee quality continue to increase and their pursuit of a better coffee machine user experience grows, existing technologies still have some shortcomings.

[0003] Although the silicone stopper of the CN 215838420 U patent can achieve a certain sealing function, the water outlet gap on the silicone stopper will be enlarged during long-term use, affecting the coffee extraction effect, the extraction effect of the component, and its service life.

[0004] Furthermore, in practical applications, existing extraction components are not convenient to disassemble and install, especially in home or office environments where ease of use during frequent use becomes a significant factor affecting user experience. The existing silicone stopper is installed inside the cup, below the filter, requiring the filter to be removed for cleaning, making the process rather cumbersome. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a coffee powder extraction component.

[0006] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0007] The coffee powder extraction assembly includes a cup body, an end cap, and an elastic stopper. The end cap is fitted onto the cup body and has a liquid inlet hole. The bottom of the cup body has a liquid outlet hole, and the elastic stopper is installed on the liquid outlet hole.

[0008] The bottom of the elastic plug is provided with an upward-recessed blind hole that faces the liquid outlet. The bottom of the cup body is provided with a positioning element for positioning the elastic plug. When the liquid outlet pressure is greater than the elastic force of the elastic plug, a liquid outlet gap is formed between the elastic plug and the wall of the liquid outlet.

[0009] Preferably, the liquid outlet is a conical hole, with the upper diameter of the outlet being smaller than the lower diameter, and the smallest diameter hole on the outlet is located on the bottom surface of the inner cavity of the cup.

[0010] Preferably, the elastic plug is an integral piece, comprising a plug body and a positioning part. The plug body is located above the positioning part and is inserted into the liquid outlet hole. The positioning part is exposed outside the cup body and is positioned and connected to the positioning element.

[0011] Preferably, the bottom of the cup body is provided with a groove, the liquid outlet is located at the bottom of the groove, and at least two positioning elements are provided in the groove and evenly distributed around the liquid outlet. The positioning elements are positioning posts, and the positioning part is provided with positioning grooves of the same number as the positioning elements. The positioning elements are engaged with the positioning grooves.

[0012] Preferably, the plug is conical in shape, and the diameter of the pore at the top of the plug is smaller than the diameter of the pore at the bottom of the plug.

[0013] Preferably, the bottom surface of the inner cavity of the cup body is provided with at least one annular baffle from the inside to the outside, a filter screen is placed on the annular baffle, and the annular baffle is provided with a number of notches, with at least two sets of notches on adjacent annular baffles arranged in a straight line and leading directly to the liquid outlet.

[0014] Preferably, the bottom of the cup body is provided with an annular groove, and a sealing gasket is installed in the annular groove, with the sealing gasket surrounding the elastic plug.

[0015] Preferably, the lower end face of the sealing gasket has a downwardly protruding protrusion for sealing, and when the elastic plug is installed on the liquid outlet, the lower end face of the elastic plug does not protrude from the lower end face of the protrusion.

[0016] Preferably, it also includes a connecting sleeve, the bottom surface of the inner cavity of the connecting sleeve is equipped with a retaining gasket, the cup body is sealed with the upper end face of the retaining gasket by a sealing gasket, the upper end face of the retaining gasket is provided with a number of conical bosses, and the retaining gasket is provided with a number of flared holes that penetrate the upper and lower end faces.

[0017] Preferably, it also includes a sealing ring sleeve, the edge of the retaining gasket is fitted with a sealing ring sleeve, the side of the retaining gasket is provided with an outwardly radially extending snap-fit ​​plate, the inner wall of the sealing ring sleeve is provided with a snap-fit ​​groove, and the snap-fit ​​plate is engaged with the snap-fit ​​groove.

[0018] This utility model, by adopting the above technical solution, has significant technical effects:

[0019] (1) The elastic plug is installed on the liquid outlet hole. Under normal conditions, it relies on its own elasticity to maintain a seal and prevent coffee liquid leakage. When the liquid pressure of the liquid outlet hole is greater than the elasticity of the elastic plug, a liquid outlet gap is formed between the elastic plug and the wall of the liquid outlet hole, so that the coffee liquid can flow out. No additional operation is required to control the liquid flow. It can automatically adjust the liquid flow state according to the pressure.

[0020] (2) A positioning element is provided at the bottom of the cup body to position the elastic plug. The elastic plug can be accurately placed during installation, and the positioning structure makes it easier to remove and install the elastic plug. This design makes it easy to remove the elastic plug for separate cleaning, effectively removing coffee residue and solving the cleaning problem.

[0021] (3) The bottom of the elastic plug is provided with an upward-recessed blind hole that faces the liquid outlet. The blind hole facilitates the deformation of the elastic plug under force, making it easier to form a liquid outlet gap. This prevents the liquid outlet gap from widening even when subjected to long-term liquid outlet pressure. This ensures the long-term stable liquid outlet performance of the component, ensuring consistent liquid outlet conditions and stable coffee extraction results each time coffee is extracted. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention from the lower viewpoint.

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from the top view.

[0024] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the elastic plug from the lower end.

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the elastic plug from the perspective of its upper end.

[0027] Figure 6 This is a schematic diagram of the structure at the bottom of the inner cavity of the cup.

[0028] Figure 7 This is a schematic diagram of the structure of the bottom of the cup.

[0029] Figure 8 This is a cross-sectional structural diagram of the connecting sleeve and its internal components.

[0030] The names of the body parts referred to by the numbers in the above attached diagrams are as follows:

[0031] 10—Cup body, 101—Liquid outlet, 102—Positioning element, 103—Groove, 104—Annular baffle, 105—Notch, 106—Annular groove

[0032] 11—End cap, 111—Liquid inlet

[0033] 12—Elastic plug, 121—Blind hole, 122—Plug body, 123—Positioning part, 124—Positioning groove

[0034] 13—Filter Screen

[0035] 14—Sealing gasket, 141—Protrusion

[0036] 15—Connecting sleeve

[0037] 16—Retention gasket, 161—Conical boss, 162—Snap-fit ​​plate portion

[0038] 17—Sealing ring sleeve, 171—Slot

[0039] 100—Liquid outlet gap Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 The present invention will be further described in detail with reference to the embodiments.

[0041] Example 1

[0042] The coffee powder extraction assembly includes a cup body 10, an end cap 11, and an elastic stopper 12. The elastic stopper 12 is made of food-grade material; in this embodiment, it is a silicone stopper. The end cap 11 covers the cup body 10 and has multiple liquid inlet holes 111. In this embodiment, there are eight liquid inlet holes 111, all evenly distributed on the end cap 11. The bottom of the cup body 10 has a liquid outlet hole 101, and the elastic stopper 12 is installed on the liquid outlet hole 101. The bottom of the elastic stopper 12 has an upwardly recessed blind hole 121 facing the liquid outlet hole 101. The bottom of the cup body 10 has a positioning member 102 for positioning the elastic stopper 12. When the liquid pressure of the liquid outlet hole 101 is greater than the elastic force of the elastic stopper 12, a liquid outlet gap 100 is formed between the elastic stopper 12 and the hole wall of the liquid outlet hole 101. The elastic stopper 12 is installed on the outlet hole 101. Under normal conditions, it seals the outlet hole 101 with its own elasticity. When the outlet pressure of the outlet hole 101 is greater than the elastic force of the elastic stopper 12, an outlet gap 100 is automatically formed between the elastic stopper 12 and the wall of the outlet hole 101, allowing the coffee liquid to flow out. This allows for precise control of the liquid flow without complicated operations, making the extraction process more convenient and efficient. The bottom of the elastic stopper 12 has an upward-recessed blind hole 121 directly opposite the outlet hole 101. The blind hole 121 facilitates the deformation of the elastic stopper 12 under pressure, forming the outlet gap 100. This prevents the outlet gap 100 from widening even under long-term pressure. This ensures stable liquid flow performance of the component over a long period, guaranteeing consistent liquid flow during each coffee extraction and stable coffee extraction results. The positioning component 102 at the bottom of the cup body 10 can help users quickly and accurately install the elastic plug 12, ensuring that the elastic plug 12 is installed in the same position every time, ensuring the stability of the liquid outlet gap 100, and thus improving the reliability of the entire extraction component.

[0043] The outlet hole 101 is a conical hole, with the upper diameter smaller than the lower diameter. The smallest diameter hole on the outlet hole 101 is located on the bottom surface of the inner cavity of the cup body 10. The conical design of the outlet hole 101, with its smaller upper diameter, allows the coffee liquid to flow out from the smaller diameter upper end during dispensing, creating a pressure buildup that makes the coffee liquid flow with greater impact. This facilitates the formation of an outlet gap 100 between the elastic stopper 12 and the outlet hole 101, helping to fully release the flavor compounds in the coffee and improving the extraction quality and taste.

[0044] The flexible stopper 12 is a single piece, comprising a stopper body 122 and a positioning part 123. The stopper body 122 is positioned above the positioning part 123 and is inserted into the liquid outlet 101. The positioning part 123 protrudes outside the cup body 10 and is positioned and connected to the positioning member 102. During coffee extraction, the flexible stopper 12 will not detach from the cup body 10. The flexible stopper 12 adopts a single-piece design, consisting of a stopper body 122 and a positioning part 123. The stopper body 122 is inserted into the liquid outlet 101, and the positioning part 123 protrudes outside the cup body 10 and is positioned and connected to the positioning member 102. This not only makes the installation of the flexible stopper 12 more stable and convenient, allowing for quick and accurate installation, but also ensures that the flexible stopper 12 will not detach from the cup body 10 during coffee extraction, maintaining the seal of the liquid outlet 101 and the stability of the liquid outlet structure, ensuring a smooth extraction process and avoiding problems such as coffee leakage or abnormal liquid outlet caused by component separation.

[0045] The bottom of the cup body 10 is provided with a groove 103, and the liquid outlet 101 is located at the bottom of the groove 103. At least two positioning elements 102 are provided within the groove 103 and evenly distributed around the liquid outlet 101. In this embodiment, there are four positioning elements 102, which are positioning posts. The positioning part 123 is provided with the same number of positioning grooves 124 as the positioning elements 102. The positioning elements 102 engage with the positioning grooves 124, thereby securing the elastic plug 12 radially to the bottom of the cup body 10 and preventing it from easily detaching from the cup body 10. The groove 103 at the bottom of the cup body 10, with the liquid outlet 101 located at the bottom of the groove 103, not only provides some protection for the liquid outlet 101, reducing the risk of damage from external impacts, but also allows for the reasonable arrangement of the positioning elements 102 within the groove 103. Multiple positioning posts evenly distributed around the liquid outlet 101 serve as positioning elements 102, engaging with the same number of positioning grooves 124 on the positioning part 123. This design greatly improves the accuracy and stability of the installation of the elastic plug 12, ensuring that the elastic plug 12 is installed in the correct position each time, thereby ensuring the consistency of the liquid outlet gap 100 and maintaining stable liquid outlet performance. It also enhances the stability of the elastic plug 12 during use, preventing it from shaking or shifting and affecting the coffee extraction effect.

[0046] The stopper 122 is conical in shape, with the diameter of the orifice at the top smaller than that at the bottom. This conical design, with a smaller top orifice than the bottom, allows the stopper 122 to better fit the outlet orifice 101. During installation, the smaller top facilitates insertion into the outlet orifice 101, resulting in a smoother insertion process. After installation, the larger bottom provides a larger contact area with the outlet orifice 101, leading to a better seal and effectively preventing coffee leakage. Furthermore, during dispensing, the conical structure allows the coffee to flow more concentratedly from the outlet slit 100 under pressure, improving dispensing efficiency, ensuring stable dispensing during coffee extraction, and thus guaranteeing the consistency and stability of the coffee extraction effect.

[0047] The bottom surface of the inner cavity of the cup body 10 is provided with at least one annular baffle 104 from the inside out. In this embodiment, there are two annular baffles 104. A filter screen 13 is placed on the annular baffles 104, and the annular baffles 104 can also support the filter screen 13. The annular baffles 104 are provided with a number of notches 105, of which the inner annular baffles 104 are provided with 3 notches 105 and the outer annular baffles 104 are provided with 6 notches 105. At least two sets of notches 105 on adjacent annular baffles 104 are arranged in a straight line and lead directly to the liquid outlet 101. That is, the notches 105 on the inner annular baffles 104 and the notches 105 on the outer annular baffles 104 are in a straight line, so as to facilitate the flow of coffee liquid along the notches 105 to the liquid outlet 101. The bottom surface of the inner cavity of the cup body 10 is provided with two annular baffles 104, which stably support the filter screen 13, preventing it from shifting during coffee extraction and ensuring effective filtration of coffee powder, thus improving the smoothness of the coffee flavor. Multiple notches 105 are provided on the annular baffles 104, and the upper parts of the notches 105 at the inner and outer ends of the annular baffles 104 are aligned and directly connect to the liquid outlet 101. This optimizes the flow path of the coffee liquid, allowing it to flow more smoothly into the liquid outlet 101, improving extraction efficiency, ensuring that the coffee liquid flows out evenly and efficiently, and thus guaranteeing the stability of the coffee extraction effect.

[0048] The bottom of the cup body 10 is provided with an annular groove 106, and a sealing gasket 14 is installed in the annular groove 106, which surrounds the elastic plug 12. The sealing gasket 14 enables the cup body 10 to seal with the retaining gasket 16, preventing coffee liquid from overflowing from the connection between the cup body 10 and the retaining gasket 16, and ensuring that all coffee liquid can flow out through the flared hole on the retaining gasket 16.

[0049] The coffee extraction assembly also includes a connecting sleeve 15. A retaining gasket 16 is installed on the bottom surface of the inner cavity of the connecting sleeve 15. The cup body 10 is sealed to the upper end face of the retaining gasket 16 via a sealing gasket 14. The upper end face of the retaining gasket 16 has a number of conical protrusions 161, and the retaining gasket 16 has a number of flared holes that penetrate both the upper and lower end faces. The addition of the connecting sleeve 15 and the retaining gasket 16 on the bottom surface of its inner cavity, combined with the sealing gasket 14 at the bottom of the cup body 10, significantly improves the sealing performance of the assembly, preventing coffee leakage and ensuring stable coffee extraction. Furthermore, the flared holes penetrating both the upper and lower end faces of the retaining gasket 16 optimize the flow path of the coffee liquid, allowing it to pass through the retaining gasket 16 more smoothly, improving the efficiency and uniformity of coffee extraction, and ensuring consistent coffee quality and taste.

[0050] The coffee extraction assembly also includes a sealing ring 17. The edge of the retaining gasket 16 is fitted with the sealing ring 17. The retaining gasket 16 has a radially extending snap-fit ​​portion 162 on its side. The inner wall of the sealing ring 17 has a snap-fit ​​groove 171, and the snap-fit ​​portion 162 engages with the snap-fit ​​groove 171. The addition of the sealing ring 17 to the coffee extraction assembly, which engages with the retaining gasket 16 via the snap-fit ​​portion 162 and the snap-fit ​​groove 171, further enhances the assembly's sealing performance. The sealing ring 17 effectively prevents coffee liquid from seeping out from the edge of the retaining gasket 16, preventing leakage to other parts of the assembly, ensuring a tight seal during the extraction process, and maintaining a good extraction environment. This snap-fit ​​connection also enhances the stability of the retaining gasket 16, preventing it from shaking or shifting during use, ensuring that the coffee liquid flows stably along the designed path when passing through the retaining gasket 16, thereby guaranteeing the consistency and stability of the coffee extraction effect.

[0051] Example 2

[0052] Example 2 is basically the same as Example 1, except that the lower end face of the sealing gasket 14 has a downwardly protruding protrusion 141 for sealing. When the elastic plug 12 is installed on the liquid outlet 101, the lower end face of the elastic plug 12 does not protrude from the lower end face of the protrusion 141. The design of the downwardly protruding protrusion 141 on the lower end face of the sealing gasket 14, and the fact that the lower end face of the elastic plug 12 does not protrude from the lower end face of the protrusion 141 after installation, effectively improves the sealing effect. The protrusion 141 can tightly fit the placement surface, forming a good seal and preventing coffee liquid from leaking from the bottom of the cup body 10. The lower end face of the elastic plug 12 is lower than the lower end face of the protrusion 141, ensuring the sealing performance of the sealing gasket 14, ensuring that the coffee extraction assembly will not leak coffee liquid during use and placement, maintaining a clean environment, and improving the user experience.

Claims

1. A coffee powder extraction assembly, comprising a cup body (10), an end cap (11), and an elastic plug (12), wherein the end cap (11) is fitted onto the cup body (10), the end cap (11) is provided with a liquid inlet (111), the bottom of the cup body (10) is provided with a liquid outlet (101), and the elastic plug (12) is installed on the liquid outlet (101), characterized in that: The bottom of the elastic plug (12) is provided with a blind hole (121) that is recessed upward and directly opposite the liquid outlet (101). The bottom of the cup body (10) is provided with a positioning element (102) for positioning the elastic plug (12). When the liquid outlet pressure of the liquid outlet (101) is greater than the elastic force of the elastic plug (12), a liquid outlet gap (100) is formed between the elastic plug (12) and the hole wall of the liquid outlet (101).

2. The coffee powder extraction assembly according to claim 1, characterized in that: The liquid outlet (101) is a conical hole. The upper diameter of the liquid outlet (101) is smaller than the lower diameter. The smallest diameter hole on the liquid outlet (101) is located on the bottom surface of the inner cavity of the cup body (10).

3. The coffee powder extraction assembly according to claim 1, characterized in that: The elastic plug (12) is an integral piece. The elastic plug (12) includes a plug body (122) and a positioning part (123). The plug body (122) is located above the positioning part (123). The plug body (122) is inserted into the liquid outlet (101). The positioning part (123) is exposed outside the cup body (10) and is positioned and connected to the positioning member (102).

4. The coffee powder extraction assembly according to claim 3, characterized in that: The bottom of the cup body (10) is provided with a groove (103), and the liquid outlet (101) is located at the bottom of the groove (103). The groove (103) is provided with at least two positioning elements (102) evenly distributed around the liquid outlet (101). The positioning element (102) is a positioning post. The positioning part (123) is provided with the same number of positioning grooves (124) as the positioning element (102). The positioning element (102) and the positioning groove (124) are engaged and connected.

5. The coffee powder extraction assembly according to claim 3, characterized in that: The plug (122) is conical in shape, and the diameter of the hole at the top of the plug (122) is smaller than the diameter of the hole at the bottom of the plug (122).

6. The coffee powder extraction assembly according to claim 1, characterized in that: The inner cavity bottom surface of the cup body (10) is provided with at least one annular baffle (104) from the inside out. A filter screen (13) is placed on the annular baffle (104). The annular baffle (104) is provided with a number of notches (105). At least two sets of notches (105) on adjacent annular baffles (104) are arranged in the same straight line and lead directly to the liquid outlet (101).

7. The coffee powder extraction assembly according to claim 1, characterized in that: The bottom of the cup body (10) is provided with an annular groove (106), and a sealing gasket (14) is installed in the annular groove (106). The sealing gasket (14) surrounds the elastic plug (12).

8. The coffee powder extraction assembly according to claim 7, characterized in that: The lower end face of the sealing gasket (14) is provided with a downward protrusion (141) for sealing. When the elastic plug (12) is installed on the liquid outlet (101), the lower end face of the elastic plug (12) does not protrude from the lower end face of the protrusion (141).

9. The coffee powder extraction assembly according to claim 7, characterized in that: It also includes a connecting sleeve (15), and a retaining gasket (16) is installed on the bottom surface of the inner cavity of the connecting sleeve (15). The cup body (10) is sealed with the upper end face of the retaining gasket (16) by a sealing gasket (14). The upper end face of the retaining gasket (16) is provided with a number of conical bosses (161), and the retaining gasket (16) is provided with a number of horn holes that penetrate the upper and lower end faces.

10. The coffee powder extraction assembly according to claim 9, characterized in that: It also includes a sealing ring sleeve (17), the edge of the retaining gasket (16) is fitted with a sealing ring sleeve (17), the side of the retaining gasket (16) is provided with a snap-fit ​​portion (162) extending radially outward, the inner wall of the sealing ring sleeve (17) is provided with a snap-fit ​​groove (171), and the snap-fit ​​portion (162) is engaged with the snap-fit ​​groove (171).

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