CN219556960U - Capsule structure - Google Patents

Abstract

The utility model discloses a capsule structure, which comprises a shell (1), wherein a containing cavity (11) is formed in the shell, and the capsule structure is characterized in that: the water outlet plate (13) is also included, and a perforation (131) is arranged at the middle position; the inserted rod (21) is arranged in the through hole (131) in a penetrating way, and the outer diameter of the inserted rod is gradually reduced from the first end to the second end of the shell (1); the water outlet plate (13) has elasticity and at least two states: in a state where no external force acts, a gap (1311) is formed between the inner peripheral wall of the through hole (131) and the outer peripheral wall of the insert rod (21); in the state that water flow is injected into the accommodating cavity (11), the middle part of the water outlet plate (13) is deformed towards the second end of the shell (1) against the self elastic force under the action of water flow pressure so as to gradually expand the width of the gap (1311) until water flow smoothly flows out through the gap (1311). Compared with the prior art, the capsule structure can set the brewing pressure.

Description

Capsule structure

Technical Field

The utility model relates to the technical field of beverage extraction, in particular to a capsule structure.

Background

There are many types of brewing and extraction apparatuses for preparing a beverage such as coffee, in which a coffee machine is a representative product, a conventional beverage brewing apparatus includes a water tank, a heating element, a water pump, etc., various beverage preparation substances such as roast and ground coffee, instant coffee, tea or other dehydrated products, etc., are packaged in a sealed jelly-pack-like capsule, and in use, the capsule containing the beverage extraction material is placed in the apparatus for preparing a beverage extraction material, and in use, heated water is pumped with water into a chamber in which a package is placed in the apparatus for preparing a beverage extraction material, and water flows through the material to be extracted such as coffee, and the beverage flows from a water outlet pipe of the coffee machine into a cup.

In order to obtain hot water with a certain pressure to extract the beverage extraction raw material in the capsule, a water outlet check valve is generally arranged at a water outlet channel of a water supply device of the coffee machine. In the extraction process, because the pressure of the water pressure is smaller than the opening force of the one-way valve assembly but larger than the sealing resistance between the piston and the inner wall of the second cavity, the water flow flows to the rear end surface of the piston along the outer peripheral surface of the connecting seat, the piston with the function of closing the first cavity can be pushed to move forward under the water pressure, and tightly attached to the rear end surface of the first machine member, thereby effectively ensuring that an extraction space with good sealing performance is formed between the piston and the first cavity.

However, the existing beverage capsules are various in types, such as coffee powder, milk powder, goat milk powder, scented tea, health-care beverage and the like, the brewing pressure of each beverage is different, if the brewing pressure is required to be adjusted, the whole one-way valve is detached, the spring is replaced, and the operation is complex.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a capsule structure capable of setting brewing pressure aiming at the current state of the art.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a capsule structure, including the casing, the inside of this casing has the holding chamber that supplies the beverage filler to hold, the first end of casing have with the water inlet that holds the chamber mutually link up, its characterized in that: and also comprises

The water outlet plate is positioned at the second end of the shell, and a through hole is formed in the middle position in a penetrating manner; and

the inserted link is fixed relative to the shell and penetrates through the perforation, and the outer diameter of the inserted link gradually decreases from the first end to the second end of the shell;

the water outlet plate has elasticity and at least has two states:

in a state without external force, the inner peripheral wall of the through hole of the water outlet plate is in clearance fit with the outer peripheral wall of the inserted link to form a clearance;

under the state that water flow is injected into the accommodating cavity, the middle part of the water outlet plate is deformed towards the second end of the shell against the self elastic force under the action of water flow pressure, so that the width of the gap is gradually enlarged until water flow smoothly flows out through the gap.

In order to avoid the influence of the extracted beverage slag on the taste along with the water flow discharge, a filter cover is arranged in the accommodating cavity, the filter cover is arranged on the water outlet plate, a liquid outlet cavity is formed between the filter cover and the water outlet plate in a surrounding manner, and a plurality of filter holes which are arranged at intervals are formed in the wall surface of the filter cover.

In order to facilitate the processing of the inserted link, the middle position of the inner wall of one side of the filter cover, which is opposite to the water outlet plate, is provided with the inserted link extending towards the water outlet plate.

In order to ensure that the width of the gap is as uniform as possible throughout the axial direction, the perforated diameter of the outlet plate decreases gradually from the first end to the second end of the housing.

In order to ensure that the width of the gap along the circumferential direction is as uniform as possible, the inserted rod and the water outlet plate are coaxially arranged.

In order to facilitate the formation of the water outlet passage, the edge of the shell, which is positioned at the periphery of the water outlet plate, is provided with an outward extending surrounding part, and a water outlet is formed at the port of the surrounding part.

In order to ensure the tightness of the accommodating cavity, a first sealing film and a second sealing film are respectively covered at the water inlet and the water outlet of the shell.

In order to avoid the influence of the extracted beverage slag on the taste along with the water flow discharge, a first filtering membrane and a second filtering membrane are respectively arranged at the first end and the second end of the accommodating cavity, which are close to the shell, and the beverage filler is clamped between the first filtering membrane and the second filtering membrane.

In order to set a proper brewing pressure, the width of the gap is 0.02-1 mm in a state without external force.

In order to facilitate the processing of the water outlet plate, the water outlet plate and the shell are integrated and made of elastic plastic.

Compared with the prior art, the utility model has the advantages that: through wearing to establish the inserted bar that the external diameter reduces gradually from the first end of casing to the second end in the perforation of seting up in the middle of the play water board, because play water board has elasticity, before the extraction, under the state of no exogenic action, the inner peripheral wall of the perforation of play water board carries out clearance fit with the outer peripheral wall of inserted bar and forms the clearance, during the extraction, under the state of rivers injection holding chamber, the drink that obtains after the extraction flows out to the play water passage through the clearance, the middle part of play water board overcomes self elasticity under the rivers pressure effect and warp to the second end of casing so that the width in clearance enlarges gradually, until rivers flow out steadily through the clearance, the deformation of play water board is stable thereupon, finally accomplish whole brewing process under stable pressure, in this way, through preset up the clearance of different width, can reach different brewing pressures, adapt to different beverage brewing requirements, and need not to set up the check valve at the machine end, low cost.

Drawings

FIG. 1 is a schematic perspective view of a capsule structure according to an embodiment of the present utility model in a non-extracted state;

FIG. 2 is an exploded perspective view of FIG. 1;

FIG. 3 is a schematic perspective view of the housing of FIG. 2 in another direction;

FIG. 4 is a longitudinal cross-sectional view of FIG. 1;

fig. 5 is a longitudinal cross-sectional view of an embodiment of the capsule structure of the present utility model in an extracted state.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 5, a preferred embodiment of the capsule structure of the present utility model is shown. The capsule structure comprises a shell 1, a filter cover 2, a first sealing film 3a, a second sealing film 3b, a first filter membrane 4a, a second filter membrane 4b and a beverage filler 5.

Wherein, the shell 1 is bowl-shaped and made of elastic plastic, as shown in fig. 3, the interior of the shell 1 is provided with a containing cavity 11; the top of the shell 1 is provided with an opening as a water inlet 12; the bottom wall of the shell 1 is marked as a water outlet plate 13, a through hole 131 is penetrated and arranged at the middle position of the water outlet plate 13, and the aperture of the through hole 131 gradually decreases from top to bottom; the casing 1 has a downwardly extending enclosure portion 14 at the edge of the outer periphery of the water outlet plate 13, and a water outlet 140 is formed at a port at the bottom of the enclosure portion 14.

The filter cover 2 is arranged in the accommodating cavity 11, covers the upper part of the water outlet plate 13, and surrounds the water outlet plate 13 to form a liquid outlet cavity 20. Specifically, the middle position of the downward inner wall of the filter cover 2 is provided with a downward extending inserted rod 21, the inserted rod 21 is coaxially arranged with the water outlet plate 13 and is penetrated in the through hole 131 of the water outlet plate 13, and the outer diameter of the inserted rod 21 gradually decreases from top to bottom; a plurality of filter holes 22 are formed in the top wall of the filter housing 2 in a penetrating manner along the vertical direction, and the filter holes are arranged at intervals along the circumferential direction of the inserted rod 21.

The first sealing film 3a covers the water inlet 12 of the housing 1, and the second sealing film 3b covers the water outlet 140 of the housing 1. Specifically, a food grade film may be used as the sealing film. During extraction, the first sealing film 3a and the second sealing film 3b are respectively pierced by the needle structures at the inlet end and the outlet end of the capsule to form a water inlet passage and a water outlet passage.

The first filtering membrane 4a is closely attached to the bottom surface of the first sealing membrane 3a, and the middle and peripheral portions of the second filtering membrane 4b are closely attached to the top surface of the filter housing 2 and the inner peripheral wall of the lower portion of the housing 1, respectively. Specifically, nonwoven filter paper may be used as the filter membrane.

The beverage filler 5 is accommodated in the accommodation chamber 11 of the housing 1 and is sandwiched between the first filtering membrane 4a and the second filtering membrane 4 b. Specifically, the beverage filler 5 may be coffee powder, milk powder, goat milk powder, scented tea, health beverage, etc.

The water outlet plate 13 has at least two states:

in a state where no external force acts, as shown in fig. 4, the inner peripheral wall of the through hole 131 of the water outlet plate 13 and the outer peripheral wall of the insertion rod 21 are in clearance fit to form a gap 1311, and at this time, the width of the gap 1311 is 0.02 to 1mm;

in a state that the water flow is injected into the receiving chamber 11, as shown in fig. 5, the middle portion of the water outlet plate 13 is deformed downward against its own elastic force by the water flow pressure to gradually expand the width of the gap 1311 until the water flow smoothly flows out through the gap 1311.

The working principle of this embodiment is as follows:

(1) Before extraction, as shown in fig. 4, the inner peripheral wall of the through hole 131 of the water outlet plate 13 and the outer peripheral wall of the inserted rod 21 are in clearance fit to form a clearance 1311, and the water inlet 12 and the water outlet 140 are both covered in a sealing manner, so that the water outlet is convenient to store;

(2) During extraction, as shown in fig. 5, the first sealing film 3a and the second sealing film 3b are respectively pierced by the needle structures at the inlet end and the outlet end of the capsule to form a water inlet passage and a water outlet passage, hot water is injected into the accommodating cavity 11 from the water inlet passage to extract the beverage filler 5, the extracted beverage enters the liquid outlet cavity 20 through the filtering holes 22, and then flows out to the water outlet passage through the gap 1311, and as the width of the gap 1311 is smaller in the initial stage, the water pressure in the liquid outlet cavity 20 is continuously increased along with continuous injection of water flow, the middle part of the water outlet plate 13 is downwards deformed under the action of the water flow pressure against the self elasticity to gradually expand the width of the gap 1311 until the water flow stably flows out through the gap 1311, the deformation of the water outlet plate 13 is also stable, and finally the whole brewing process is completed under the stable brewing pressure;

for the above scheme, by adjusting the aperture of the through hole 131 on the water outlet plate 13 or the outer diameter of the insert rod 21 on the filter cover 2, the gap 1311 with different widths is preset, so that different brewing pressures (the pressure adjustable range is tentatively 0.5-16 bar) can be achieved, different beverage brewing requirements can be met, a one-way valve is not required to be arranged at the machine end, and the cost is low.

Claims (10)

1. The utility model provides a capsule structure, is including casing (1), and the inside of this casing (1) has accommodation chamber (11) that supply beverage filler (5) to hold, the first end of casing (1) have with water inlet (12) that link up mutually of accommodation chamber (11), its characterized in that: and also comprises

The water outlet plate (13) is positioned at the second end of the shell (1), and a through hole (131) is formed in the middle position in a penetrating manner; and

a plug rod (21) fixed relative to the shell (1) and penetrating the through hole (131), wherein the diameter of the plug rod (21) gradually decreases from the first end to the second end of the shell (1);

the water outlet plate (13) has elasticity and at least has two states:

in a state of no external force, the inner peripheral wall of the through hole (131) of the water outlet plate (13) is in clearance fit with the outer peripheral wall of the inserted rod (21) to form a clearance (1311);

in the state that water flow is injected into the accommodating cavity (11), the middle part of the water outlet plate (13) is deformed towards the second end of the shell (1) against the self elastic force under the action of water flow pressure so as to gradually expand the width of the gap (1311) until water flow smoothly flows out through the gap (1311).

2. Capsule structure according to claim 1, characterized in that: the filter cover (2) is arranged in the accommodating cavity (11), the filter cover (2) is covered on the water outlet plate (13), a liquid outlet cavity (20) is formed between the water outlet plate (13) in a surrounding mode, and a plurality of filter holes (22) which are arranged at intervals are formed in the wall surface of the filter cover (2).

3. Capsule structure according to claim 2, characterized in that: the middle position of the inner wall of one side of the filter cover (2) opposite to the water outlet plate (13) is provided with the inserted link (21) extending towards the water outlet plate (13).

4. Capsule structure according to claim 1, characterized in that: the diameter of the through holes (131) of the water outlet plate (13) gradually decreases from the first end to the second end of the shell (1).

5. Capsule structure according to claim 1, characterized in that: the inserted rod (21) and the water outlet plate (13) are coaxially arranged.

6. Capsule structure according to claim 1, characterized in that: the shell (1) is provided with an outward extending surrounding part (14) at the edge of the periphery of the water outlet plate (13), and a water outlet (140) is formed at the port of the surrounding part (14).

7. The capsule structure of claim 6, wherein: the water inlet (12) and the water outlet (140) of the shell (1) are respectively covered with a first sealing film (3 a) and a second sealing film (3 b).

8. Capsule structure according to claim 1, characterized in that: the first end and the second end of the accommodating cavity (11) close to the shell (1) are respectively provided with a first filtering membrane (4 a) and a second filtering membrane (4 b), and the beverage filler (5) is clamped between the first filtering membrane (4 a) and the second filtering membrane (4 b).

9. Capsule structure according to any one of claims 1 to 8, wherein: the width of the gap (1311) is 0.02-1 mm in a state where no external force acts.

10. Capsule structure according to any one of claims 1 to 8, wherein: the water outlet plate (13) and the shell (1) are integrated and made of elastic plastic.