CN106175452B

CN106175452B - Anti-drip method for coffee machine and anti-drip coffee machine

Info

Publication number: CN106175452B
Application number: CN201610767280.8A
Authority: CN
Inventors: 程晶; 刘万全; 夏静
Original assignee: Shenzhen Dingjia Hongsi Drinks Technology Co ltd
Current assignee: Shenzhen Dingjia Hongsi Drinks Technology Co ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2022-08-16
Anticipated expiration: 2036-08-30
Also published as: CN106175452A

Abstract

The invention relates to a drip-proof method of a coffee machine, after a water pump stops working, under the closed state of a brewing cavity, residual liquid in a capsule is discharged from the water inlet surface of the capsule through a pressure-relief water path by utilizing the residual high pressure in the brewing cavity; still relate to an antidrip coffee machine, it includes casing, piston, subassembly, the drainage subassembly and is used for the chamber of making of holding capsule, wherein this drainage subassembly is including setting up pressure release connecting pipe, the sealed pressure release pipe and the relief valve of wearing to establish on the piston on the casing, and the one end and the chamber intercommunication of making of this pressure release pipe, the other end are connected with the one end of pressure release connecting pipe, and the other end and the pressure release water way intercommunication of this pressure release connecting pipe, the lumen and the pressure release connecting pipe intercommunication of pressure release pipe form the pressure release water passageway, above-mentioned relief valve is used for controlling pressure release water passageway and pressure release water way intercommunication or seal. Compared with the prior art, the invention can effectively solve the problem of dripping of the coffee machine caused by residual liquid in the coffee capsule.

Description

Anti-drip method for coffee machine and anti-drip coffee machine

Technical Field

The invention relates to the field of coffee machines, in particular to a coffee machine drip-proof method and a drip-proof coffee machine.

Background

The capsule coffee machine is a novel coffee machine which appears in recent years, and when the coffee machine is used for making coffee, only the coffee capsules are filled into the special capsule coffee machine, so that the coffee with strong fragrance can be drunk. Compared with semi-automatic coffee machines and full-automatic coffee machines, the capsule coffee machine has the advantages of simple and convenient operation, strong coffee aroma, capability of keeping the quality of each cup of coffee to be brewed basically consistent and the like, thereby being pursued by coffee enthusiasts.

After the capsule coffee machine brews coffee, coffee liquid remained in the coffee machine can flow out of the coffee outlet nozzle, so that the capsule coffee machine is not only inconvenient to clean, but also can influence the use feeling of consumers. Therefore, the Chinese utility model patent with the patent number ZL201520647004.9 (the publication number CN 204889669U) discloses a structure of a drip-proof structure of a coffee machine, which comprises a shell; the brewing unit and the water pump are arranged in the shell; the waste box group is arranged below the shell; the coffee outlet assembly is arranged on the front end face of the shell and comprises a coffee inlet pipe and an air hole, a first coffee outlet pipe and a second coffee outlet pipe, wherein one end of the coffee inlet pipe is connected with the brewing unit in an assembling mode, the other end of the coffee inlet pipe is communicated with the first coffee outlet pipe and the second coffee outlet pipe, the air hole is located above the coffee inlet pipe, the first coffee outlet pipe is located below the front portion of the coffee inlet pipe, a blocking wall is arranged between the first coffee outlet pipe and the second coffee outlet pipe and located below the front portion of the lower wall end of the coffee inlet pipe, and one end of the second coffee outlet pipe is communicated with the waste material box. The coffee remaining in the coffee inlet pipe in this patent cannot make a parabolic movement after losing the pressure of the water pump, and therefore drips down the coffee inlet pipe under gravity into the second coffee outlet pipe and into the waste cartridge.

Also for example, the chinese utility model patent No. ZL201120028375.0 (No. CN 201948803U) discloses a structure of drip-proof structure of coffee maker, which comprises a coffee brewing device, a heating pot, a water pump and a water tank sequentially connected through a water pipe, and a water outlet check valve and a pressure release valve connected in series are arranged between the heating pot and the coffee brewing device. The pressure release valve is in an inverted T shape, a water inlet is formed in one end of a transverse pipeline portion of the pressure release valve, a water outlet is formed in the other end of the transverse pipeline portion of the pressure release valve, a valve cover is arranged on the top of a longitudinal pipeline portion of the pressure release valve, and a pressure release opening is formed in the valve cover. The pressure release valve that sets up in this patent can unload automatically and fast in the coffee machine because boil produced pressure behind the coffee to shorten the time that the drip took place in the hu zui department of coffee machine, perhaps stop the drip phenomenon that hu zui department takes place completely.

In the prior art, when the coffee capsule special for the capsule coffee machine is prepared, coffee beans are prepared into coffee powder through special treatment and then are sealed in a capsule similar to 'fruit jelly', and meanwhile, the capsule is filled with nontoxic inert gas to play a role in prolonging the shelf life and sterilizing again. The general coffee capsules are filled with about 8g of coffee powder, and the coffee powder fully fills the space in the coffee capsules, but the coffee powder in some coffee capsules in the market at present does not fully fill the capsule, namely, a gap is left between the coffee powder and the top of the capsule when the coffee capsules are used, so that more liquid can be remained in the capsule after the extraction of coffee is finished, and the liquid can not leak from a coffee outlet completely, thereby causing bad use experience for users. As can be seen from the above, the anti-dripping structure in the first patent solves the dripping problem caused by the coffee remaining in the coffee inlet pipe, while the anti-dripping structure in the second patent solves the dripping problem caused by the water remaining in the water pipe, and both of them cannot solve the dripping problem of the capsule coffee machine caused by the coffee capsule not fully filled with the coffee powder, and thus the existing anti-dripping technology of the capsule coffee machine still needs to be modified.

Disclosure of Invention

The invention aims to solve the first technical problem of providing a coffee machine drip-proof method which can effectively prevent the coffee machine from dripping.

The second technical problem to be solved by the present invention is to provide a drip-proof coffee maker with good drip-proof effect.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a coffee machine drip-proof method is characterized in that after a water pump stops working, residual liquid in a capsule is discharged from a water inlet surface of the capsule through a pressure-relief water path by using high pressure residual in a brewing cavity under the closed state of the brewing cavity.

Further, after the water pump stops working, the pressure release valve is opened under the closed state of the brewing cavity, residual liquid in the capsule flows to the pressure release water path through the pressure release water channel and finally flows into the waste liquid box, wherein the pressure release water channel is communicated with the brewing cavity where the capsule is located or directly communicated with the interior of the capsule.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides an antidrip coffee machine, includes casing, piston, subassembly and is used for the chamber of making of holding capsule of intaking, the piston restraint can slide from top to bottom for the casing in the inner chamber of casing, thereby sealed or open make the chamber, a serial communication port, still include the drainage subassembly, this drainage subassembly is including setting up the pressure release connecting pipe on the casing, sealed pressure release pipe and the relief valve of wearing to establish on the piston, the one end and the chamber intercommunication of making of this pressure release pipe, the other end is connected with the one end of pressure release connecting pipe, and the other end of this pressure release connecting pipe with establish pressure release water way intercommunication, the lumen of pressure release pipe and the intercommunication formation of pressure release connecting pipe pressure release water passageway, above-mentioned relief valve is used for controlling pressure release water passageway and pressure release water way intercommunication or seals.

The pressure relief needle tube is embedded in the pressure relief tube, and a first needle punching part of the pressure relief needle tube extends out of the bottom of the piston and can be used for puncturing the capsule; the pressure relief needle tube can puncture the capsule, so that the pressure relief water channel is directly communicated with the interior of the capsule, and the residual liquid in the capsule is quickly discharged to the pressure relief water circuit.

Further, go out the water subassembly and include a water needle pipe, the second acupuncture portion of this water needle pipe stretches out the bottom of piston and can pierce the capsule to the degree of depth that this second acupuncture portion can pierce the capsule is greater than first acupuncture portion, thereby enables the residual water in the pressure release water passageway discharge capsule better.

Preferably, the top of the housing is provided with a first mounting hole extending vertically, a second mounting hole is formed at a position of the piston opposite to the first mounting hole, the pressure relief pipe is arranged in the second mounting hole in a sealing manner, and the upper end of the pressure relief pipe is located in the first mounting hole. Furthermore, be equipped with annular protruding rank on the first mounting hole pore wall, be provided with an annular protruding edge along circumference on the outer peripheral face of pressure release pipe upper end, this annular protruding edge is set up at annular protruding rank to make the mounting structure of pressure release pipe more firm.

Preferably, the inner cavity lower part of pressure release pipe outwards extends along circumference and forms the installation cavity that is used for inlaying the dress pressure release needle tubing, the one end of pressure release needle tubing is the connecting portion of holding in above-mentioned installation cavity, and the other end is above-mentioned first acupuncture portion, and is provided with the stopper between connecting portion and the first acupuncture portion, and this stopper offsets with the bottom of piston, and the top of piston is provided with spacing spring.

Preferably, the pressure relief connecting pipe is arranged at the top of the shell, a port at one end of the pressure relief connecting pipe extends outwards along the circumferential direction to form an end cover which is covered and sealed in the first mounting hole, the end cover is fixed with the top of the shell through a fastening piece, and the other end of the pressure relief connecting pipe is a pressure relief water connector communicated with pressure relief water flow.

Preferably, the water inlet assembly comprises a water inlet channel arranged on the shell, a water outlet channel vertically penetrating through the piston and a check valve assembly arranged in the water outlet channel, the water inlet channel is communicated with a gap between the shell and the piston, the check valve assembly comprises a valve core, a valve core spring and a valve seat, the valve core spring and the valve seat are sequentially arranged in the water outlet channel from top to bottom, a water outlet hole is formed in the valve seat, the valve core spring is supported between the valve core and the valve seat in a propping mode, so that the valve core keeps the trend of plugging an upper port on the water outlet channel, a water outlet needle tube is arranged in the water outlet hole, and a needle punching part of the water outlet needle tube is exposed in the brewing cavity.

Compared with the prior art, the invention has the advantages that: in the drip-proof method, after the water pump stops working, the residual liquid in the capsule is discharged from the water inlet surface of the capsule through the pressure-relief water path by using the residual high pressure in the brewing cavity under the closed state of the brewing cavity, so that the residual liquid in the capsule is effectively prevented from leaking from the coffee outlet, and the use satisfaction degree of a user is improved. In addition, the coffee machine is provided with the drainage assembly, the drainage assembly comprises a pressure relief connecting pipe and a pressure relief pipe, and a pressure relief water channel for communicating the capsule with the pressure relief water channel can be formed through the pressure relief connecting pipe and the pressure relief pipe, so that after the water pump stops working, a pressure relief valve on the pressure relief water channel enables residual water in the capsule to be discharged to the pressure relief water channel through the pressure relief water channel and finally enter the waste liquid box, and the problem of dripping leakage of the coffee machine is effectively solved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a method for preventing dripping;

FIG. 2 is a schematic view of an embodiment of an anti-drip coffee maker of the present invention;

FIG. 3 is an exploded view of an embodiment of the drip-proof coffee maker of the present invention;

FIG. 4 is another schematic view of the structure of FIG. 3;

FIG. 5 is an exploded view of section I of FIG. 3;

fig. 6 is a cross-sectional view taken along a-a of fig. 2.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 2 to 6, a drip-proof coffee maker comprises a housing 2, a piston 3, a water inlet assembly and a brewing chamber 7 for accommodating a capsule 6, wherein the piston 3 is constrained in an inner cavity of the housing 2 and can slide up and down relative to the housing 2, a limiting spring 102 is arranged at the top of the piston 3 to keep the piston 3 in a downward movement trend, a main support 1 is arranged outside the housing 2, and a connecting rod structure 11 and a handle 12 are arranged on the main support 1 to drive the housing 2 and the piston 3 to move up and down, wherein the connecting rod structure 11 is a conventional structure. The water inlet assembly comprises a water inlet channel 41 arranged on the shell 2, a water outlet channel 42 vertically penetrating through the piston 3 and a check valve assembly arranged in the water outlet channel 42, the water inlet channel 41 is communicated with a gap between the shell 2 and the piston 3, the check valve assembly comprises a valve core 421, a valve core spring 422 and a valve seat 424, the valve core 421, the valve core spring 422 and the valve seat 424 are sequentially arranged in the water outlet channel 42 from top to bottom, a water outlet hole 423 is formed in the valve seat 424, the valve core spring 422 is supported between the valve core 421 and the valve seat 424 in a propping mode, so that the valve core 421 keeps a trend of plugging an upper port of the water outlet channel 42, a water outlet needle tube 425 is arranged in the water outlet hole 423, and a second needle-puncturing part 426 of the water outlet needle tube 425 extends out of the bottom of the piston 3 and can puncture the capsule 6. In addition to sealing by means of the locking force of the connecting rod structure 11, the coffee machine in this example embodiment is assisted in pushing and sealing by the pressure of hot water used in extraction, wherein during extraction, high-pressure hot water enters the gap between the housing 2 and the piston 3 from the water inlet channel 41, so that the piston 3 is pushed to move downwards to press the coffee capsule 6, the brewing chamber 7 is ensured to form effective sealing, the water outlet needle tube 425 pierces the capsule 6, and the hot water enters the capsule 6 to extract coffee.

The capsule coffee machine in this embodiment uses a large size capsule 6(14g of ground coffee) and the ground coffee does not fill the capsule 6, so that the residual liquid in the capsule 6 after the water pump stops working and does not drip completely from the coffee outlet 71 of the coffee machine. To solve this problem, as shown in fig. 1, a pressure relief water passage 5 is formed in the coffee maker, and the pressure relief water passage 5 communicates the brewing chamber 7 with a pressure relief water path 9. The water pump is operated, and high-pressure hot water enters the capsule 6 from the water inlet waterway 8 through the water inlet channel 41 and the water outlet channel 42 to extract coffee. After the water pump stops working, high-pressure hot water stops entering, the pressure release valve 103 is opened under the closed state of the brewing cavity 7, and residual liquid in the capsule 6 flows to the pressure release water waterway 9 through the pressure release water channel 9 and finally flows into the waste liquid box.

In order to realize the above technical solution, a drainage assembly is further disposed in the coffee machine of this embodiment, the drainage assembly includes a pressure relief connecting pipe 52 disposed on the housing 2, a pressure relief pipe 51 sealingly disposed on the piston 3, and the above pressure relief valve 103, one end of the pressure relief pipe 51 is communicated with the brewing cavity 7, the other end is connected with one end of the pressure relief connecting pipe 52, and the other end of the pressure relief connecting pipe 52 is communicated with the pressure relief water waterway 9, that is, the pressure relief pipe 51 is communicated with the pressure relief connecting pipe 52 to form the pressure relief water passage 5, and the above pressure relief valve 103 is used for controlling the communication or sealing of the pressure relief water passage 5 and the pressure relief water waterway 9. That is, when the relief valve 103 is opened, the relief water passage 5 allows the residual liquid in the capsule 6 to communicate with the relief water passage 9, and the residual liquid in the capsule 6 is discharged to the waste water tank through the relief water passage 5 and the relief water passage 9.

In order to remove the residual water in the capsule 6 more effectively, it is preferable that a pressure-relief needle tube 53 is embedded in the pressure-relief tube 51, and a first piercing part 533 of the pressure-relief needle tube 53 protrudes from the bottom of the piston 3 and can pierce the capsule 6. Therefore, the first needle-puncturing part 533 of the pressure-releasing needle tube 53 can puncture the capsule 6, when the water pump stops working, the pressure-releasing valve 103 is opened, the pressure-releasing water passage 5 is communicated with the pressure-releasing water passage 9, and the liquid in the capsule 6 can be directly discharged to the pressure-releasing water passage 9 through the pressure-releasing water passage 5.

Further, a first mounting hole 21 extending vertically is formed in the center of the top of the housing 2, a second mounting hole 31 is formed in the position of the piston 3 opposite to the first mounting hole 21, the pressure relief pipe 51 is hermetically disposed in the second mounting hole 31, and the upper end of the pressure relief pipe is located in the first mounting hole 21, that is, a sealing ring 101 is respectively disposed between the hole wall of the second mounting hole 31 and the pressure relief pipe 51, and optionally, an annular groove 513 for embedding the sealing ring 101 is disposed on the outer circumferential surface of the pressure relief pipe 51. Further, an annular flange 512 is provided on the outer peripheral surface of the upper end of the pressure release pipe 51 in the circumferential direction, and the annular flange 512 is supported on an annular flange 211 provided on the wall of the first mounting hole 21. Thus, the pressure relief needle tube 53 can penetrate the center of the capsule 6, which is beneficial to accelerating the speed of pressure relief and drainage.

The lower part of the inner cavity of the pressure relief tube 51 extends outwards along the circumferential direction to form an installation cavity 511 for embedding a pressure relief needle tube 53, one end of the pressure relief needle tube 53 is a connecting part 531 accommodated in the installation cavity 511, the other end of the pressure relief needle tube 53 is the first acupuncture part 533, a limiting block 532 is arranged between the connecting part 531 and the first acupuncture part 533, the limiting block 532 abuts against the bottom of the piston 3, and the top of the piston 3 is provided with a limiting spring 102. That is, the piston 3 is restrained in the housing 2 by the interaction of the stopper spring 102 and the stopper 532. The pressure relief connecting pipe 52 is disposed at the top of the casing 2, a port of one port of the pressure relief connecting pipe extends outwards along the circumferential direction to form an end cover 521 covering and sealing the first mounting hole 21, the end cover 521 is fixed with the top of the casing 2 through a screw, and the other end of the pressure relief connecting pipe is a pressure relief water connector 522 communicated with a pressure relief water flow.

Claims

1. A drip-proof coffee machine comprises a shell (2), a piston (3), a water inlet assembly and a brewing cavity (7) for containing a capsule (6), wherein the piston (3) is constrained in an inner cavity of the shell (2) and can slide up and down relative to the shell (2) so as to seal or open the brewing cavity (7), and the drip-proof coffee machine is characterized by further comprising a drainage assembly, the drainage assembly comprises a pressure relief connecting pipe (52) arranged on the shell (2), a pressure relief pipe (51) and a pressure relief valve (103) which are hermetically arranged on the piston (3) in a penetrating way, one end of the pressure relief pipe (51) is communicated with the brewing cavity (5), the other end of the pressure relief connecting pipe is connected with one end of the pressure relief connecting pipe (52), the other end of the pressure relief connecting pipe (52) is communicated with a pressure relief water channel (9), and the pressure relief pipe (51) is communicated with the pressure relief connecting pipe (52) to form the pressure relief water channel (5), the pressure release valve (103) is used for controlling the communication or the sealing of the pressure release water channel (5) and the pressure release water channel (9);

And after the water pump of the water inlet assembly stops working, residual liquid in the capsule (6) is discharged from the water inlet surface of the capsule (6) through the pressure-relief water channel (9) by utilizing the high pressure residual in the brewing cavity (7) under the closed state of the brewing cavity (7).

2. Drip-proof coffee machine according to claim 1, characterized in that after the water pump of the water intake assembly has stopped working, the pressure relief valve (103) opens in the closed state of the brewing chamber (7), and the residual liquid in the capsule (6) flows through the pressure relief water channel (5) to the pressure relief water circuit (9) and finally into the waste liquid box, wherein the pressure relief water channel (5) communicates with the brewing chamber (7) where the capsule (6) is located or directly with the interior of the capsule (6).

3. Drip-proof coffee machine according to claim 1, characterized in that a pressure-relief needle (53) is embedded in said pressure-relief tube (51), the first piercing portion (533) of said pressure-relief needle (53) protruding from the bottom of the piston (3) and being able to pierce the capsule (6).

4. Drip-proof coffee machine according to claim 3, characterized in that the outlet assembly comprises an outlet needle (425), the second piercing part (426) of the outlet needle (425) protruding out of the bottom of the piston (3) and being able to pierce the capsule (6), and the second piercing part (426) being able to pierce the capsule (6) to a greater depth than the first piercing part (533).

5. The drip-proof coffee machine according to claim 1, characterized in that the top of the housing (2) is opened with a first mounting hole (21) extending vertically, a second mounting hole (31) is opened at the piston (3) opposite to the first mounting hole (21), the pressure-relief tube (51) is sealingly disposed in the second mounting hole (31) and its upper end is located in the first mounting hole (21).

6. The drip-proof coffee maker according to claim 5, wherein the first mounting hole (21) is provided with an annular convex step (211) on the hole wall, the outer peripheral surface of the upper end of the pressure release pipe (51) is provided with an annular convex edge (512) along the circumferential direction, and the annular convex edge (512) is arranged on the annular convex step (211).

7. The drip-proof coffee machine according to claim 1, characterized in that the lower part of the inner cavity of the pressure relief tube (51) extends outward along the circumferential direction to form a mounting cavity (511) for embedding a pressure relief needle tube (53), one end of the pressure relief needle tube (53) is a connecting part (531) accommodated in the mounting cavity (511), the other end is the first needle-punched part (533), a limiting block (532) is arranged between the connecting part (531) and the first needle-punched part (533), the limiting block (532) abuts against the bottom of the piston (3), and the top of the piston (3) is provided with a limiting spring (102).

8. The drip-proof coffee machine according to claim 7, characterized in that the pressure relief connecting pipe (52) is arranged on the top of the housing (1), the port of one end of the pressure relief connecting pipe extends outwards along the circumferential direction to form an end cover (521) covering and sealing the first mounting hole (21), the end cover (521) is fixed with the top of the housing (1) through a fastener, and the other end of the pressure relief connecting pipe is a pressure relief water port (522) capable of communicating with the pressure relief water channel (9).

9. The drip-proof coffee machine according to any claim 1 to 8, characterized in that the water inlet assembly comprises a water inlet channel (41) disposed on the housing (2), a water outlet channel (42) vertically penetrating the piston (3), and a check valve assembly disposed in the water outlet channel (42), the water inlet channel (41) is communicated with the gap between the housing (2) and the piston (3), the check valve assembly comprises a valve core (421), a valve core spring (422) and a valve seat (424), the valve core (421), the valve core spring (422) and the valve seat (424) are sequentially disposed in the water outlet channel (42) from top to bottom, a water outlet hole (423) is formed in the valve seat (424), the valve core spring (422) is supported between the valve core (421) and the valve seat (424), so that the valve core (421) keeps the tendency of blocking the upper port of the water outlet channel (42), the water outlet needle tube (425) is arranged in the water outlet hole (423).