CN210300674U

CN210300674U - Piercing system for capsules

Info

Publication number: CN210300674U
Application number: CN201821841527.7U
Authority: CN
Inventors: 胡文清
Original assignee: Ningbo AAA Group Electric Appliance Co Ltd
Current assignee: Ningbo AAA Group Electric Appliance Co Ltd
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2020-04-14
Anticipated expiration: 2028-11-08

Abstract

The utility model relates to a puncture system of capsule, which comprises a capsule-based beverage extraction device and a capsule filled with ingredients, wherein the beverage extraction device comprises a machine part which can move from an open state to a closed state, a cavity used for accommodating the capsule is arranged in the machine part, and a puncture needle used for puncturing the capsule is arranged in the cavity; the method is characterized in that: the puncture needle is internally provided with a water inlet flow passage, the outer part of the puncture needle is sleeved with a sealing ring, when the part moves to a closed state, the puncture needle punctures the capsule, the outlet end of the water inlet flow passage is completely positioned in the capsule, and meanwhile, the sealing ring blocks the outer part of the capsule to prevent liquid from flowing into the cavity from the puncture position. This system sets up seal structure on the felting needle, need not additionally to set up seal structure on beverage extraction equipment or capsule, and in the pressurized hot water all got into the capsule, can not flow to the cavity indoor, rivers pressure can hardly lose, guarantees enough extraction pressure, promotes coffee beverage quality, also avoids producing waste water after the extraction as far as simultaneously.

Description

Piercing system for capsules

Technical Field

The utility model relates to a puncture system of capsule for beverage extraction equipment, beverage extraction equipment are one kind and extract the equipment of drawing of corresponding juice with the holding thing of container in through the high pressure quick heating water, are suitable for to handle the container (capsule) of packing and are equipped with the batching, and the batching can produce beverage or edible juice, the common coffee machine that has with the liquid that is introduced in the capsule like hot pressurized water interact after.

Background

A beverage extraction device is an extraction device for extracting the contents of a container with a corresponding juice by rapidly heating water under high pressure, suitable for processing the container (capsule) containing the ingredients which, after interaction with a liquid introduced into the capsule, such as hot pressurized water, are capable of producing a beverage or an edible juice. The capsule is a circular truncated cone-shaped ring which can be filled with ingredients such as coffee powder and is closed by a foil-shaped tear face cover welded or crimped on an annular rim extending radially from the side wall of the ring. The beverage extraction equipment comprises a water pump, a heating boiler and an extraction assembly, wherein the extraction assembly comprises a first machine part and a second machine part which can move relatively, the second machine part is assisted by mechanical or hydraulic force to move, the second machine part is in sliding contact with the first machine part and then is sealed and closed to form a sealed extraction cavity for containing capsules, a cracking plate is arranged in the first machine part, a puncture needle for puncturing the capsules is arranged in the second machine part, when beverage is extracted, high-pressure hot water is injected into the capsules from the capsule puncturing positions, and the foil-shaped tearing surface cover is cracked under the combined action of the high pressure in the capsules and the cracking plate, so that the beverage (such as coffee beverage) is finally discharged from the capsules.

However, if for different reasons (due to wear, aging, clogging with solid residues, etc.) the sealing of the extraction chamber has been broken or its efficiency decreased over time, or if the closing position is misaligned (deviating from the ideal closing position, for example due to wear, fatigue or manufacturing tolerances), there is a possibility that there is no tight sealing or even a gap between the packaging member and the capsule. According to the prior art, the sealing joint is obtained by pressing the annular rim of the capsule, which reveals the front part of the second member, by means of a rubber elastic joint. According to the prior art method, the sealing is ensured by a fixing structure fixed or attached to the beverage extraction device. The drawback is that after intensive use (over a large number of extraction cycles) the stationary sealing means are worn and the extraction conditions of the beverage deteriorate, thus having a negative effect on the quality of the beverage. Any "leakage" outside the capsule in particular reduces the pressure built up inside the capsule, on the other hand sufficient extraction pressure is a key factor in the quality of the espresso coffee, and in particular the beverage is significantly improved in terms of aroma and fat richness.

Such a system is disclosed, for example, in chinese patent No. ZL200580036655.3 (publication No. CN100518597C) system comprising capsules with sealing means, comprising: a capsule-based beverage production device, and-a capsule for containing a beverage ingredient, the beverage production device being provided with: means for injecting a liquid under pressure into the capsule, means for draining the beverage from the capsule, and an enclosing member transitionable from an open state to a defined closed state, wherein the enclosing member encloses an outer surface of the capsule, characterized by a sealing member associated with the capsule, the sealing member being compressible when engaged by the enclosing member in the closed state and the sealing member being effective to compensate for a gap between the enclosing member and the capsule; without the sealing member of the capsule, said gap would be present when the enclosing member is in its defined closed position.

The design idea of aforementioned patent is to set up the sealing member on the capsule, and the capsule is disposable, under the prerequisite of guaranteeing the good leakproofness in extraction chamber, reduces the sealed requirement to extraction equipment itself.

The aforementioned patents, however, suffer from the following drawbacks:

1. the capsule needs to be provided with a sealing member, which has high requirements on capsule manufacturing and increases the cost of the capsule.

2. A small part of high-pressure hot water enters the extraction cavity, and although the capsules and the capsule holders are additionally provided with sealing pieces, water leakage and pressure loss can be prevented, but more waste water is generated after preparation is finished; in addition, a small amount of water enters the extraction cavity, which causes a certain pressure loss of the water entering the capsule and affects the quality of the coffee.

In view of the above, further improvements are needed in the piercing systems of existing capsules.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a structural design is reasonable, produce the puncture system of the few capsule of waste water to above-mentioned prior art current situation, should puncture the system and need not additionally to set up seal structure on the capsule or on the first parts of extraction equipment, also can guarantee enough extraction pressure, reduce the cost of capsule and extraction equipment simultaneously.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a capsule piercing system comprising a capsule-based beverage extraction device, and a capsule filled with an ingredient, wherein the beverage extraction device comprises a machine member movable from an open state to a closed state, the machine member having a cavity therein for receiving the capsule, the cavity having a piercing needle therein for piercing the capsule; the method is characterized in that: the inside inhalant canal that has of felting needle, the outside cover of felting needle is equipped with the sealing washer, and when the closed condition was removed to the spare, the capsule was punctured to the felting needle, and inhalant canal's exit end all is located the capsule, simultaneously, the sealing washer shutoff prevents liquid from puncturing the position inflow in the capsule outside the capsule via the cavity.

Preferably, the piercing needle has a connecting portion fixed to the machine member and a piercing portion located in front of the connecting portion for piercing the capsule. The connecting part is convenient to be connected with the machine part, particularly can be in threaded connection, the puncturing part is used for puncturing the capsule, the diameter of the connecting part can be made large through sectional arrangement so as to increase strength, meanwhile, the connecting part is convenient to be connected with the machine part, and the puncturing part can be made thin so as to facilitate puncturing the capsule.

As an improvement, the puncture part is in a circular truncated cone shape with the cross section gradually reduced from top to bottom. The appearance of the capsule with a large upper part and a small lower part is convenient for puncturing the capsule, and importantly, the cross section of the puncturing part is circular, so that the puncturing position of the capsule is in a circular hole shape, a tearing shape cannot be formed, and water is not easy to leak; and because the outer diameter of the cross section of the puncture part is gradually reduced from top to bottom, when high-pressure water enters the capsule, the capsule is pressed to expand, the expanded capsule shell moves along the thicker part of the puncture part, the puncture position of the capsule can be better blocked, and the water leakage prevention effect is better.

Preferably, the bottom surface of the piercing part has a cutting slope to form a sharp piercing site. The puncture part is formed into a needle point shape, and can rapidly puncture the capsule to ensure that the capsule is regularly damaged.

Further, the connecting portion is provided with a blocking shoulder portion, the sealing ring is sleeved on the puncturing portion, and meanwhile, the sealing ring abuts against the blocking shoulder portion to perform rear limiting on the sealing ring. The shoulder block has a backward movement limiting effect on the sealing ring, when high-pressure water enters the capsule, the capsule is pressed to expand, and the expanded capsule shell tightly extrudes the sealing ring between the shoulder block and the capsule shell, so that good sealing is formed, and liquid is better prevented from flowing into the cavity from a puncture position.

Preferably, an annular groove is formed in the periphery of the puncturing part close to the shoulder part, so that the sealing ring can be embedded after being extruded and deformed. Further improving the combination degree of the sealing ring and the periphery of the puncture part.

Optionally, the water inlet channel is a through hole penetrating through the connecting part and the piercing part, and a lower port of the through hole forms an outlet end of the water inlet channel.

Alternatively, the water inlet channel comprises a blind hole penetrating through the connecting part and a communicating hole positioned on the puncturing part and radially penetrating and communicating the outside and the blind hole, and the communicating hole forms an outlet end of the water inlet channel.

Preferably, the inner wall of the chamber is provided with a plurality of ribs arranged at intervals along the circumference. Form the clearance between each rib, can prevent that the bonding of capsule periphery wall from adsorbing on the cavity inner wall, more do benefit to the capsule and break away from the cavity.

Compared with the prior art, the utility model has the advantages of: the pricking pin is internally provided with a water inlet flow passage, a sealing ring is sleeved outside the pricking pin, when the component moves to a closed state, the pricking pin punctures the capsule, and the outlet end of the water inlet flow passage is completely positioned in the capsule, so that high-pressure hot water flowing into the water inlet flow passage during extraction directly enters the capsule, and the sealing ring is blocked outside the capsule to prevent liquid from flowing into the cavity from the puncture position, so that the liquid in the capsule cannot pass through the cavity of the flow passage at the puncture position and only can be discharged from the front part of the capsule; this system sets up seal structure on the felting needle, and seal structure comprises sealing washer and the water inlet flow channel of setting in the felting needle, the structure is fairly simple, the equipment is changed conveniently, need not additionally to set up seal structure on beverage extraction equipment or capsule, pressurized hot water is whole to get into in the capsule, can not flow to the cavity indoor, rivers pressure can hardly lose, guarantee enough extraction pressure, promote the coffee beverage quality, especially the mellow degree of coffee beverage and the abundance of grease have obvious improvement, also avoid producing waste water after the extraction as far as possible simultaneously.

Drawings

Fig. 1 is an exploded view of a first embodiment of the present invention;

fig. 2 is a cross-sectional view of a first embodiment of the present invention;

FIG. 3 is an exploded view of the first embodiment of the present invention showing the assembly of the sealing ring and the lancet;

fig. 4 is an exploded view of a second embodiment of the present invention;

fig. 5 is a cross-sectional view of a second embodiment of the present invention;

fig. 6 is an exploded view of the assembly of the sealing ring and the puncture needle according to the second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 3, it is a first preferred embodiment of the present invention.

A piercing system for a capsule comprises a beverage extraction device based on a capsule 2 and a capsule 2 filled with ingredients, wherein the beverage extraction device comprises a machine member 3 which can move from an open state to a closed state, a chamber 4 for accommodating the capsule 2 is arranged in the machine member 3, the shape of the chamber 4 is matched with the shape of the capsule, a water channel 31 is arranged in the machine member 3, and a plurality of ribs 41 which are arranged at intervals along the circumference are arranged on the inner wall of the chamber 4. A puncture needle 5 for puncturing the capsule 2 is arranged in the cavity 4; as a complete beverage extraction device also means for injecting a pressurized liquid into the capsule, means for draining the beverage from the capsule are comprised, both assemblies being prior art.

The utility model discloses a main improvement point lies in: the puncture needle 5 is internally provided with a water inlet flow passage 6, the outer part of the puncture needle 5 is sleeved with a sealing ring 7, when the machine member 3 moves to the closed state, the puncture needle 5 punctures the capsule 2, the outlet end of the water inlet flow passage 6 is completely positioned in the capsule 2, and meanwhile, the sealing ring 7 is blocked outside the capsule 2 to prevent liquid from flowing into the cavity 4 from the capsule 2 through the puncture position.

The spike 5 has a connecting portion 51 and a piercing portion 52 located in front of the connecting portion 51, the connecting portion 51 being screwed onto the water channel 31 of the machine member 3, said piercing portion 52 being intended to pierce the capsule 2. The piercing portion 52 has a circular truncated cone shape with a cross section from top to bottom, the outer diameter of which gradually decreases. The bottom surface of the puncturing part 52 has a cutting slope 521 to form a sharp puncturing position. The connecting portion 51 is provided with a shoulder portion 511, the sealing ring 7 is sleeved on the puncturing portion 52, and meanwhile, the sealing ring 7 abuts against the shoulder portion 511 to perform rear limiting on the sealing ring 7.

Preferably, an annular groove 522 is formed on the outer periphery of the piercing portion 52 near the shoulder portion 511 for receiving the sealing ring 7 after being deformed by compression.

The water inlet passage 6 in this embodiment is a through hole penetrating the connecting portion 51 and the piercing portion 52, and a lower port of the through hole constitutes an outlet end of the water inlet passage 6.

As shown in FIGS. 4-6, it is another embodiment of the present invention.

The present embodiment is different from the first embodiment in that: the water inlet flow passage 6 is composed of a blind hole 61 penetrating the connecting part 51 and a communicating hole 62 positioned on the puncturing part 52 and radially penetrating and communicating the outside and the blind hole 61, and the communicating hole 62 constitutes an outlet end of the water inlet flow passage 6.

It should be noted that in the description of the present embodiment, the terms "front, back", "left, right", "up, down", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description of the present invention and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A piercing system for capsules, comprising a beverage extraction device based on capsules (2), and capsules (2) filled with ingredients, wherein the beverage extraction device comprises a mechanical member (3) movable from an open state to a closed state, the mechanical member (3) having a chamber (4) therein for accommodating said capsules (2), said chamber (4) being provided with a piercing needle (5) for piercing the capsules (2); the method is characterized in that: the puncture needle (5) is internally provided with a water inlet flow passage (6), a sealing ring (7) is sleeved outside the puncture needle (5), when the machine member (3) moves to a closed state, the puncture needle (5) punctures the capsule (2), the outlet end of the water inlet flow passage (6) is completely positioned in the capsule (2), and meanwhile, the sealing ring (7) is blocked outside the capsule (2) to prevent liquid from flowing into the cavity (4) from the capsule (2) through the puncture position.

2. Piercing system for capsules according to claim 1, characterized in that: the piercing needle (5) has a connecting part (51) and a piercing part (52) in front of the connecting part (51), the connecting part (51) being fixed to the machine member (3), the piercing part (52) being intended to pierce the capsule (2).

3. Piercing system for capsules according to claim 2, characterized in that: the puncture part (52) is in a circular truncated cone shape with the cross section gradually reduced from top to bottom.

4. Piercing system for capsules according to claim 3, characterized in that: the bottom surface of the puncturing part (52) is provided with a cutting inclined surface (521) so as to form a sharp puncturing position.

5. Piercing system for capsules according to claim 2, characterized in that: the connecting portion (51) is provided with a shoulder blocking portion (511), the sealing ring (7) is sleeved on the puncturing portion (52), and meanwhile the sealing ring (7) abuts against the shoulder blocking portion (511) to limit the sealing ring (7) in the rear direction.

6. Piercing system for capsules according to claim 5, characterized in that: an annular groove (522) is formed in the periphery of the puncture part (52) close to the shoulder stopping part (511) so that the sealing ring (7) can be embedded after being extruded and deformed.

7. Piercing system for capsules according to claim 2, characterized in that: the water inlet flow channel (6) is a through hole penetrating through the connecting part (51) and the puncturing part (52), and the lower port of the through hole forms the outlet end of the water inlet flow channel (6).

8. Piercing system for capsules according to claim 2, characterized in that: the water inlet flow channel (6) is composed of a blind hole (61) penetrating through the connecting part (51) and a communicating hole (62) which is positioned on the puncturing part (52) and radially penetrates through the blind hole (61) to communicate the outside, and the communicating hole (62) forms the outlet end of the water inlet flow channel (6).

9. Piercing system for capsules according to claim 1, characterized in that: the inner wall of the chamber (4) is provided with a plurality of ribs (41) which are arranged at intervals along the circumference.