Capsule sealing structure and beverage brewing device

Abstract

The utility model discloses a capsule sealing structure which is used for being matched with a capsule (3) in a sealing mode, comprises a capsule chamber (2) which is internally provided with a cavity (20) for containing the capsule (3), and is characterized in that the periphery of the top side of the capsule (3) is provided with an annular protruding edge (31), the edge of the top of the capsule chamber (2) is provided with a first elastic bent edge (223) which is bent and extends inwards, and the first elastic bent edge (223) is provided with a second elastic bent edge (223). The tail end of the first elastic bent edge (223) is provided with a second elastic bent edge (224) which is bent and extends downwards, the top face of the first elastic bent edge (223) abuts against the bottom face of the annular protruding edge (31), and the inner side face of the second elastic bent edge (224) abuts against the peripheral wall of the capsule (3). The utility model further discloses a beverage brewing device with the capsule sealing structure. Compared with the prior art, the capsule sealing structure can improve the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of beverage brewing equipment technology, specifically to a capsule sealing structure and a beverage brewing device. Background Technology

[0002] A coffee machine is a type of beverage brewing equipment. The brewing system is the main component of a coffee machine. The brewing system includes a fixed part and a moving part. One of the fixed part and the moving part is equipped with a needle, which is directly fixed to the part. The moving part is driven by a drive structure and can slide relative to the fixed part. When the fixed part and the moving part are closed, they form a brewing chamber. During brewing, the coffee capsule is located in the brewing chamber. During extraction, heated water is pumped into the extraction chamber by a water pump. The water flows through the coffee raw materials to be extracted, and the coffee beverage flows from the coffee machine's water outlet into the cup.

[0003] The capsule has an annular protrusion on the top side, which is used to clamp between the opposite end faces of the fixed part and the moving part for end face sealing. A sealing element is generally required at the annular protrusion to improve the sealing performance of the capsule. For details, please refer to Chinese patent application number CN200580035596.8, "Capsule with Sealing Device".

[0004] However, the end-face seal is extremely dependent on the sealing performance of the capsule itself and the brewing system. During the brewing process, when the brewing pressure gradually increases, water leakage is likely to occur at the sealing end. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a capsule sealing structure that can improve the sealing effect, in light of the current state of the technology.

[0006] The second technical problem to be solved by this utility model is to provide a beverage brewing apparatus that uses the above-mentioned capsule sealing structure.

[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a capsule sealing structure, including...

[0008] Capsule chamber, with an internal cavity having a top-side opening; and

[0009] The capsule is housed in the chamber and has an annular protrusion on its top periphery, which abuts against the end face of the top edge of the capsule chamber.

[0010] The capsule chamber is characterized in that it has a first elastic bend extending inward at the top edge, and a second elastic bend extending downward at the end of the first elastic bend. The top surface of the first elastic bend abuts against the bottom surface of the annular protrusion, and the inner surface of the second elastic bend abuts against the outer peripheral wall of the capsule.

[0011] To facilitate the processing of the capsule chamber, the capsule chamber includes:

[0012] The capsule chamber body has a first inner cavity with a top-side opening; and

[0013] An elastic sealing sleeve is installed on the top of the capsule chamber body, and has a second inner cavity with openings on the top and bottom sides;

[0014] The first inner cavity and the second inner cavity together form the chamber, and the top edge of the elastic sealing sleeve forms the top edge of the capsule chamber.

[0015] In order to achieve the connection between the capsule chamber body and the elastic sealing sleeve, an annular boss is provided on the outer peripheral wall of the top edge of the capsule chamber body in the circumferential direction, and an annular groove is provided on the inner peripheral wall of the bottom edge of the elastic sealing sleeve in the circumferential direction for the annular boss to be engaged.

[0016] To support the elastic sealing sleeve, the capsule chamber also includes a rigid support sleeve, which is fitted around the outer periphery of the capsule chamber body and the elastic sealing sleeve.

[0017] To prevent the rigid support sleeve from sliding up and down, the outer peripheral wall at the bottom of the capsule chamber body has a limiting flange, the outer peripheral wall at the top of the elastic sealing sleeve has an outer step, and the inner peripheral wall at the top edge of the rigid support sleeve has an inner step.

[0018] The end face of the bottom edge of the rigid support sleeve abuts against the limiting flange, and the step surface of the inner step of the rigid support sleeve abuts against the step surface of the outer step.

[0019] To prevent liquid from flowing out of the chamber through the inlet channel, the bottom of the capsule chamber has an inlet channel that connects to the chamber. A one-way valve is installed in the inlet channel that only allows water to flow through the inlet of the inlet channel to the outlet.

[0020] To facilitate the manufacturing of the check valve, the check valve includes:

[0021] A mounting base is installed at the outlet of the water inlet channel;

[0022] The movable block is installed vertically within the water inlet channel; and

[0023] An elastic element acts between the fixed seat and the movable block to ensure that the movable block always tends to close the inlet of the water inlet channel;

[0024] With water flowing in through the inlet of the water inlet channel, the movable block opens the inlet of the water inlet channel under water pressure.

[0025] To facilitate the installation of the elastic element, the elastic element is a compression spring, with its two ends abutting against the fixed seat and the movable block, respectively.

[0026] To facilitate the fixation of the capsule chamber, a capsule chamber support is also included. The capsule chamber support has a cavity with a top opening inside, and a water inlet pipe communicating with the cavity at the bottom. The bottom of the capsule chamber is accommodated in the cavity and is sealed to the top edge of the capsule chamber support.

[0027] To facilitate fluid entry, the outlet end of the inlet pipe is directly opposite the inlet of the inlet channel.

[0028] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a beverage brewing device, characterized in that: it includes the above-mentioned capsule sealing structure.

[0029] Compared with the prior art, the advantages of this utility model are as follows: by setting a first elastic bend extending inward at the top edge of the capsule chamber, and a second elastic bend extending downward at the end of the first elastic bend, during the coffee brewing process, the water pressure can make the top surface of the first elastic bend press tightly against the bottom surface of the annular convex edge of the capsule to form an end face seal, while pushing the second elastic bend to expand inward so that its inner surface presses tightly against the outer peripheral wall of the capsule to form a radial seal. The above-mentioned end face and radial double seal can improve the sealing effect and prevent water leakage. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the capsule sealing structure in an embodiment of the beverage brewing apparatus of this utility model;

[0031] Figure 2 for Figure 1 A three-dimensional exploded view;

[0032] Figure 3 for Figure 1 A longitudinal sectional view. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0035] like Figures 1 to 3 The image shows a preferred embodiment of the beverage brewing apparatus of this invention, which incorporates a capsule sealing structure. The capsule sealing structure includes a capsule chamber support 1 and a capsule chamber 2, for sealing with a capsule 3.

[0036] The capsule chamber support 1 has a cavity 10 with a top opening inside, and a water inlet pipe 11 communicating with the cavity 10 at the bottom.

[0037] The capsule chamber 2 includes a capsule chamber body 21, an elastic sealing sleeve 22, and a rigid support strip 23.

[0038] Specifically, the bottom of the capsule chamber body 21 is housed in the aforementioned recess 10 and is sealed to the top edge of the capsule chamber support 1; the capsule chamber body 21 has a first inner cavity 210 with a top side opening; an annular boss 211 is circumferentially protruding on the outer peripheral wall of the top edge of the capsule chamber body 21; a limiting flange 212 is provided on the outer peripheral wall of the bottom of the capsule chamber body 21; the bottom of the capsule chamber 2 has a water inlet channel 213 communicating with the aforementioned first inner cavity 210, and a one-way valve 214 is installed in the water inlet channel 213, which only allows water to flow through the inlet of the water inlet channel 213 to the outlet, and the outlet end of the aforementioned water inlet pipe 11 is directly opposite the inlet of the water inlet channel 213;

[0039] In this embodiment, the one-way valve 214 includes a fixed seat 2141, a movable block 2142, and an elastic element 2143. The fixed seat 2141 is installed at the outlet of the water inlet channel 213. The movable block 2142 is installed in the water inlet channel 213 and can move up and down. The elastic element 2143 is a compression spring, with its two ends abutting against the fixed seat 2141 and the movable block 2142 respectively, so that the movable block 2142 always has the tendency to close the inlet of the water inlet channel 213. When water flows in from the inlet of the water inlet channel 213, the movable block 2142 opens the inlet of the water inlet channel 213 under the action of water pressure.

[0040] The elastic sealing sleeve 22 is made of silicone material; an annular groove 221 is provided on the inner peripheral wall of the bottom edge of the elastic sealing sleeve 22 for the annular boss 211 to be engaged, thereby realizing its connection with the capsule chamber body 21; the interior of the elastic sealing sleeve 22 has a second inner cavity 220 with openings on the top and bottom sides, which together with the first inner cavity 210 forms a top-opening chamber 20; the outer peripheral wall of the top of the elastic sealing sleeve 22 has an outer step 222; the top edge of the elastic sealing sleeve 22 bends inward to form a first elastic bend 223, and the end of the first elastic bend 223 bends downward to form a second elastic bend 224;

[0041] The rigid support sleeve 23 is made of steel and is fitted around the outer periphery of the capsule chamber body 21 and the elastic sealing sleeve 22. The end face of the bottom edge of the rigid support sleeve 23 abuts against the limiting flange 212. The inner peripheral wall of the top edge of the rigid support sleeve 23 has an inner step 231, and the step surface of the inner step 231 abuts against the step surface of the outer step 222, thereby preventing the rigid support sleeve 23 from sliding up and down.

[0042] Capsule 3 is housed within the aforementioned chamber 20. Specifically, capsule 3 has an annular protrusion 31 on its top periphery, the top surface of the first elastic bend 223 abuts against the bottom surface of the annular protrusion 31, and the inner surface of the second elastic bend 224 abuts against the outer peripheral wall of capsule 3.

[0043] The working principle of this embodiment is as follows: During the coffee brewing process, water enters the concave cavity 10 through the water inlet pipe 11. The water flow pushes the movable block 2142 to open the inlet of the water inlet channel 213, and then enters the chamber 20 through the water inlet channel 213. At this time, in addition to entering the capsule 3 for extraction, the water flow also enters the gap between the outer wall of the capsule 3 and the inner wall of the capsule chamber 2. When the water fills the entire gap, the water pressure can make the top surface of the first elastic bend 223 press tightly against the bottom surface of the annular convex edge 31 to form an end face seal. At the same time, it pushes the second elastic bend 224 to expand inward so that its inner side presses tightly against the outer peripheral wall of the capsule 3 to form a radial seal. The above-mentioned end face and radial double seal can improve the sealing effect and prevent water leakage.

Claims

1. A capsule sealing structure for sealing with a capsule (3), the capsule sealing structure comprising a capsule chamber (2), the capsule chamber (2) having a cavity (20) with a top opening for accommodating the capsule (3), characterized in that: The capsule (3) has an annular convex edge (31) on its top side periphery, and the capsule chamber (2) has a first elastic bend (223) extending inward at its top edge. The end of the first elastic bend (223) has a second elastic bend (224) extending downward. The top surface of the first elastic bend (223) abuts against the bottom surface of the annular convex edge (31), and the inner surface of the second elastic bend (224) abuts against the outer peripheral wall of the capsule (3).

2. The capsule sealing structure according to claim 1, characterized in that: The capsule chamber (2) includes a capsule chamber body (21) and a first inner cavity (210) with a top-side opening; and An elastic sealing sleeve (22) is installed on top of the capsule chamber body (21) and has a second inner cavity (220) with openings on the top and bottom sides; The first inner cavity (210) and the second inner cavity (220) together form the chamber (20), and the top edge of the elastic sealing sleeve (22) forms the top edge of the capsule chamber (2).

3. The capsule sealing structure according to claim 2, characterized in that: The capsule chamber body (21) has an annular boss (211) protruding circumferentially on the outer peripheral wall of the top edge, and the elastic sealing sleeve (22) has an annular groove (221) for the annular boss (211) to be engaged on the inner peripheral wall of the bottom edge.

4. The capsule sealing structure according to claim 2, characterized in that: The capsule chamber (2) further includes a rigid support sleeve (23), which is fitted around the outer periphery of the capsule chamber body (21) and the elastic sealing sleeve (22).

5. The capsule sealing structure according to claim 4, characterized in that: The capsule chamber body (21) has a limiting flange (212) on the outer peripheral wall at the bottom, the elastic sealing sleeve (22) has an outer step (222) on the outer peripheral wall at the top, and the rigid support sleeve (23) has an inner step (231) on the inner peripheral wall at the top edge. The end face of the bottom edge of the rigid support sleeve (23) abuts against the limiting flange (212), and the step surface of the inner step (231) of the rigid support sleeve (23) abuts against the step surface of the outer step (222).

6. The capsule sealing structure according to any one of claims 1 to 5, characterized in that: The bottom of the capsule chamber (2) has a water inlet channel (213) that connects to the chamber (20), and a one-way valve (214) is installed in the water inlet channel (213) that only allows water to flow through the inlet of the water inlet channel (213) to the outlet.

7. The capsule sealing structure according to claim 6, characterized in that: The one-way valve (214) includes a fixed seat (2141) installed at the outlet of the water inlet channel (213); The movable block (2142) is movably installed in the water inlet channel (213); and An elastic element (2143) acts between the fixed seat (2141) and the movable block (2142) so that the movable block (2142) always tends to close the inlet of the water inlet channel (213); When water flows into the inlet of the water inlet channel (213), the movable block (2142) opens the inlet of the water inlet channel (213) under the action of water pressure.

8. The capsule sealing structure according to claim 7, characterized in that: The elastic element (2143) is a compression spring, with its two ends abutting against the fixed seat (2141) and the movable block (2142) respectively.

9. The capsule sealing structure according to claim 6, characterized in that: It also includes a capsule chamber support (1), which has a cavity (10) with a top opening inside. The bottom of the capsule chamber support (1) has a water inlet pipe (11) communicating with the cavity (10). The bottom of the capsule chamber (2) is accommodated in the cavity (10) and is sealed to the top edge of the capsule chamber support (1).

10. A beverage brewing apparatus, characterized in that: It includes the capsule sealing structure as described in any one of claims 1 to 9.

Images