CN106175460B

CN106175460B - Coffee machine

Info

Publication number: CN106175460B
Application number: CN201610736504.9A
Authority: CN
Inventors: 钟斯林
Original assignee: Suzhou Lingsi Industrial Co ltd
Current assignee: Suzhou Lingsi Industrial Co ltd
Priority date: 2016-08-26
Filing date: 2016-08-26
Publication date: 2022-11-01
Anticipated expiration: 2036-08-26
Also published as: CN106175460A

Abstract

The invention discloses a coffee machine, which relates to the field of beverage preparation devices and comprises a machine body, a coffee making machine and a coffee making system, wherein the machine body is provided with a water inlet pipeline; a brewing chamber assembly consisting of a number of brewing chamber units, each of said brewing chamber units being adapted to be alternatively connected to a brewing chamber receiving location of said machine body; each brewing cavity unit is respectively provided with a water inlet communicated with the water inlet pipeline and a coffee outlet for independently discharging brewed liquid. Because every makes the chamber unit and all has independent coffee mouth to make the coffee that each makes the chamber unit and make and steep when discharging can not mix with the coffee that other make the chamber units and make and steep, guaranteed the pure taste of coffee, and only need select for use the chamber unit that makes when dashing and steep, the area and the space that the coffee machine occupy the workstation are less.

Description

Coffee machine

Technical Field

The invention relates to a coffee machine, and belongs to the technical field of beverage preparation devices.

Background

Along with the application of electronic technology, coffee makers tend to realize the automatic control of the whole process of brewing coffee, such as grinding, pressing, filling, brewing, residue removal and the like. While the forms of coffee capsules for coffee machines include loose powder, cake pack, hard pack (FAP), nestle concentrated (Nescafe nesproso), nestle Dolce Gusto, BLUE goblet coffee (BLUE MIO), cup (KCUP), etc. in various series. Due to the increasing number of forms of coffee capsules, and the desire to experience a variety of different coffee capsules, there is a need for a coffee maker that can brew a range of capsule families. Common coffee machines can only brew one or two series of coffee capsules. This is due to the fact that for different forms of capsule, the brewing pressure and the requirements on the brewing chamber of the coffee machine also vary. The requirement for brewing pressure is obviously different among different capsules, so that a plurality of different series of capsules cannot be brewed in the same coffee brewing cavity, and even if the capsules with similar brewing pressure share the same brewing cavity, the optimal brewing taste cannot be achieved.

In the prior art, for example, chinese patent publication No. CN201153867Y discloses a brewing pressure adjustable coffee machine, which comprises a water tank, a water inlet mechanism, a brewing chamber and a heater, wherein a set of pressure adjusting mechanism with adjustable opening pressure is arranged in the brewing chamber, and the pressure adjusting mechanism is a mechanism integrated with the brewing pressure adjustable coffee machine or an additional mechanism. The pressure regulator adjusts the opening pressure of the one-way rubber valve through the compression amount of the elastic piece of the pressure regulating rod, and the movement stroke of the pressure regulating rod and the compression amount of the elastic body limit the pressure regulating range, so that the brewing requirements of various capsules cannot be met simultaneously. Another embodiment of the pressure regulator moves the corresponding elastic body to a set position through the adjustment of the dividing plate to control the resistance of the water path, however, the pressure regulator has a complex structure and is difficult to maintain.

In the prior art, chinese patent publication No. CN202537195U discloses a multifunctional capsule machine, which comprises a heating system, a water path control system and a plurality of independent brewing units, wherein the plurality of independent brewing units are distributed at different positions of the machine, each brewing unit is distributed at different positions of the machine, each brewing unit corresponds to a specific coffee capsule, and each brewing unit is provided with an independent pressure limiting valve, a brewing cavity, a puncturing device, a sealing structure and a coffee outlet channel, which are designed according to the coffee capsule. The coffee capsule is placed in the corresponding brewing cavity, the brewing cavity cover is closed, the water distribution mechanism is adjusted to the position where the water channel of the brewing unit is opened, and the control system is provided with a program which is set according to the characteristics of the coffee capsule to start brewing.

However, in the above prior art, since a plurality of brewing units commonly use one coffee outlet, in order to ensure the pure tastes of different coffees, only one capsule can be selected at a time to be placed in the brewing unit corresponding to the capsule for brewing, so that the whole brewing unit needs to be cleaned when the coffee type needs to be changed, and the use is inconvenient. In addition, the large size of the brewing unit comprised of multiple brewing units results in the capsule machine occupying a large amount of area and space on the countertop.

Disclosure of Invention

The invention aims to solve the technical problem that the multifunctional capsule machine in the prior art is inconvenient to use when ensuring that coffee has pure taste, so that the coffee machine which is suitable for brewing various coffee capsules, is convenient to replace coffee types and can ensure the taste is provided.

The invention provides a coffee machine, comprising:

a machine body having a water inlet line;

a brewing chamber assembly consisting of a number of brewing chamber units, each of said brewing chamber units being adapted to be alternatively connected to a brewing chamber receiving location of said machine body; each brewing cavity unit is respectively provided with a water inlet communicated with the water inlet pipeline and a coffee outlet for independently discharging brewed liquid.

Preferably, the water inlet pipeline is provided with a first pressure control mechanism.

Preferably, each of said brewing chamber units has at least one pressure control mechanism.

Preferably, each of said brewing chamber units has two pressure control mechanisms, respectively a second pressure control mechanism located in said water inlet line and a third pressure control mechanism located in said coffee outlet line.

Preferably, said first pressure control means comprise, in order from a position distant from the centre of the brewing chamber to a position close to the centre of the brewing chamber, a first one-way valve controlling the direction of the water flow, a first spring pressing against said first one-way valve; the first spring has a compressed state allowing liquid to enter the water inlet line and an initial state preventing backflow of liquid.

Preferably, said second pressure control mechanism comprises, in order from a position distant from the centre of the brewing chamber to a position close to the centre of the brewing chamber, a second one-way valve, a second tray housing said second one-way valve, a second spring pressing against said second tray, and a second adjusting screw pressing against said second spring for adjusting the pressure exerted on said second one-way valve; the second spring has a compressed state allowing liquid to enter the brewing chamber and an initial state preventing liquid in the brewing chamber from flowing out.

Preferably, said third pressure control means comprise, in order from a position close to the centre of the brewing chamber to a position in principle at the centre of the brewing chamber, a third one-way valve, a third tray carrying said third one-way valve, a third spring pressing against said third tray, and a third adjusting screw pressing against said third spring for adjusting the pressure exerted on said third one-way valve; the third spring has a compressed state allowing liquid to flow out and an initial state preventing liquid in the brewing chamber from flowing out.

Preferably, said second springs of said brewing chamber assembly are of the same elastomer and said third springs are of the same elastomer; the brewing cavity units are sequentially numbered, the compression amount of the second spring in the initial state is set to be sequentially increased by the second adjusting screw according to the numbering sequence, the compression amount of the third spring in the initial state is set to be sequentially increased by the third adjusting screw, and correspondingly, the brewing cavity units can form gradually increased pressure in the brewing cavity units according to the numbering sequence.

Preferably, the second one-way valve and the third one-way valve of the brewing chamber assembly are the same one-way valve; the second adjusting screw and the third adjusting screw are the same adjusting screw; the brewing cavity assembly is provided with a plurality of second one-way valves and second adjusting screws, and a plurality of third one-way valves and third adjusting screws, which are consistent in position relation in an initial state; the brewing cavity units are sequentially numbered, the elastic modulus of the second spring and the elastic modulus of the third spring are sequentially increased according to the numbering sequence, and correspondingly, the brewing cavity units can form gradually increased pressure in the brewing cavity units according to the numbering sequence.

Preferably, the brewing chamber unit is connected with the machine body in a drawing way; a drawing guide rail is formed on the machine body; the brewing cavity unit is provided with a plate body matched with the drawing guide rail.

Preferably, the brewing cavity unit comprises a cup body, a cup stand integrally connected with the cup body, and a cup cover connected to the cup stand and arranged in a turnover manner; turning and pressing the cup cover to cover the opening of the cup body, wherein the cup body and the cup cover form a brewing cavity; the plate body is formed on the cup stand.

Preferably, the cup holder is formed with a handle to facilitate the extraction of the brewing chamber unit from the machine body.

Preferably, the top of the machine body is provided with a handle which can rotate and is arranged in linkage with the water inlet support; the handle is provided with a first operating position for driving the water inlet support to ascend so that the brewing cavity unit can be pushed into the brewing cavity accommodating position, and a second operating position for driving the water inlet support to descend so that a water inlet pipeline formed on the water inlet support is embedded with the convex water inlet on the cup cover: the water inlet pipeline is embedded with the water inlet and then locks the brewing cavity unit on the machine body.

Preferably, the cup body and the matched cup cover are internally provided with pricker needles according to the type of the set coffee capsule.

Preferably, the coffee outlet is formed at the bottom of the cup body; the water inlet is formed on the cup cover.

Compared with the prior art, the invention has the following advantages:

1. the invention provides a coffee machine, which comprises a machine body with a water inlet pipeline and a brewing cavity assembly. The brewing chamber assembly is composed of a plurality of brewing chamber units, each of which is adapted to be alternatively connected to a brewing chamber receiving location of the machine body; each brewing cavity unit is respectively provided with a water inlet communicated with the water inlet pipeline and a coffee outlet for independently discharging brewed liquid. Because each brewing cavity unit is provided with the independent coffee outlet, the coffee brewed by each brewing cavity unit is not mixed with coffee brewed by other brewing cavity units when being discharged, and the pure taste of the coffee is ensured. In use, according to different types of brewing capsules, a brewing cavity unit corresponding to the capsule is selected from the brewing cavity assembly and connected to the machine body, brewing water enters the brewing cavity unit from a water inlet of the brewing cavity unit, and brewed drinks are independently discharged from a coffee outlet of the brewing cavity unit. When the brewing capsule type needs to be changed, the brewing cavity unit connected to the machine body is separated from the machine body, another brewing cavity unit corresponding to the selected capsule is selected to be connected to the machine body, brewing water enters from the water inlet of the brewing cavity unit, and brewed drinks are independently discharged from the coffee outlet of the brewing cavity unit. Therefore, the coffee machine provided by the invention can select different brewing cavity units from the brewing cavity assembly according to different brewing capsule types/series, and each brewing cavity unit is provided with an independent coffee outlet, so that different types of coffee are discharged from respective outlets without mixing after being brewed, and the taste of the brewed capsules of different types/series is ensured. But also different series of coffee can be brewed quickly by replacing the brewing chamber unit connected to the machine body.

In practical use, one brewing cavity unit can be selected to be connected to the machine body according to the type of the brewing capsule, and the rest brewing cavity units can be separated from the machine body without occupying a workbench, so that the coffee machine occupies a small area and a small space on the workbench. When the brewing type or series needs to be increased, only the number of the brewing cavity units is increased.

In addition, the brewing cavity assembly of the coffee machine comprises a plurality of independent brewing cavity units, and the damage of one brewing cavity unit does not influence other brewing cavity units and the continuous work of the machine body.

2. According to the coffee machine provided by the invention, the water inlet pipeline is provided with the first pressure control mechanism, so that water in the machine body can enter the water inlet pipeline only when enough pressure is obtained after the water reaches the set temperature.

3. The coffee machine provided by the invention is characterized in that each brewing cavity unit is provided with two pressure control mechanisms, namely a second pressure control mechanism positioned on the water inlet pipeline and a third pressure control mechanism positioned on the coffee outlet pipeline. Under the superposition and combined action of the second pressure control mechanism and the third pressure control mechanism, the brewing cavity can reach a certain pressure value so as to brew coffee.

4. The coffee machine provided by the invention is characterized in that the second pressure control mechanism sequentially comprises a second one-way valve, a second tray for supporting the second one-way valve, a second spring pressing towards the second tray, and a second adjusting screw pressing towards the second spring and used for adjusting the pressure applied to the second one-way valve from a position far away from the center of the brewing cavity to a position close to the center of the brewing cavity; the second spring has a compressed state allowing liquid to enter the brewing chamber and an initial state preventing liquid in the brewing chamber from flowing out. By rotating the second adjustment screw, the amount of compression of the second spring can be adjusted, thereby adjusting the pressure exerted on the second one-way valve and thus the pressure in the brewing chamber unit. When the coffee machine starts to brew or the pressure in the brewing cavity is low, the brewing water has enough pressure to press the one-way valve, the second spring is compressed, and the brewing water enters the brewing cavity. When the pressure in the brewing chamber rises to the desired value, the second spring is reset to the initial state, so that the liquid in the brewing chamber cannot flow out of the water inlet.

5. The coffee machine provided by the invention is characterized in that the third pressure control mechanism sequentially comprises a third one-way valve, a third tray for supporting the third one-way valve, a third spring for pressing the third tray and a third adjusting screw for pressing the third spring to adjust the pressure applied to the third one-way valve from a position close to the center of the brewing chamber to a position in principle of the center of the brewing chamber; said third spring having a compressed state allowing liquid outflow and an initial state preventing liquid outflow inside the brewing chamber. By rotating the third adjusting screw, the amount of compression of the third spring can be adjusted, thereby adjusting the pressure exerted on the third one-way valve and thus the pressure inside the brewing chamber unit. When the coffee machine just starts to brew or the pressure in the brewing cavity is lower, the third spring is in an initial state and prevents brewed liquid from being discharged from the coffee port. When the pressure in the brewing chamber rises to a required value, the third spring is compressed, and the brewed beverage is discharged from the coffee outlet.

6. In the coffee machine provided by the invention, the second springs of the brewing cavity assembly are the same elastic body, and the third springs are the same elastic body; the brewing cavity units are sequentially numbered, the compression amount of the second spring in the initial state is set to be sequentially increased by the second adjusting screw according to the numbering sequence, the compression amount of the third spring in the initial state is set to be sequentially increased by the third adjusting screw, and correspondingly, the brewing cavity units can form gradually increased pressure in the brewing cavity units according to the numbering sequence. Thereby making each brewing chamber unit cavity of the brewing chamber assembly form different pressures, and further meeting the brewing requirements of various coffee capsules with different brewing pressure requirements.

7. According to the coffee machine provided by the invention, the second one-way valve and the third one-way valve of the brewing cavity assembly are the same one-way valve; the second adjusting screw and the third adjusting screw are the same adjusting screw; in an initial state of the brewing cavity assembly, the position relations of the plurality of second one-way valves and the second adjusting screws and the position relations of the plurality of third one-way valves and the third adjusting screws are consistent; the brewing cavity units are sequentially numbered, the elastic moduli of the second spring and the third spring are sequentially increased progressively according to the numbering sequence, and correspondingly, the brewing cavity units can form gradually increased pressure inside the brewing cavity units according to the numbering sequence. Therefore, different pressures can be formed in each brewing cavity unit cavity of the brewing cavity assembly, and the brewing requirements of various coffee capsules with different brewing pressure requirements are met.

8. According to the coffee machine provided by the invention, the brewing cavity unit is connected with the machine body in a drawing manner; a drawing guide rail is formed on the machine body; the brewing cavity unit is provided with a plate body matched with the drawing guide rail. The pull-type connection allows a quick and easy replacement of the brewing chamber unit connected to the machine body.

9. The invention provides a coffee machine.A brewing cavity unit comprises a cup body, a cup stand integrally connected with the cup body and a cup cover which is connected to the cup stand and can be arranged in a turnover way; the cup cover covers the opening of the cup body in a turning and pressing mode, and the cup body and the cup cover form a brewing cavity. After the capsule is put into the cup body, the cup cover arranged on the turnover cover is convenient to be connected with the cup body to form a closed brewing cavity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an overall schematic view of the coffee maker of the present invention;

FIG. 2 is a top view of a brewing chamber unit of FIG. 1;

FIG. 3 is a side cross-sectional view of FIG. 2;

FIG. 4 is a cross-sectional view of the inlet bracket and the first pressure control mechanism of the coffee maker of the present invention;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is a cross-sectional view of the lid and the second pressure control mechanism of the coffee maker of the present invention;

FIG. 7 is an exploded view of FIG. 6;

FIG. 8 is a cross-sectional view of a cup and a third pressure control mechanism of the coffee maker of the present invention;

fig. 9 is an exploded view of fig. 8.

Reference numerals are as follows: 10-a machine body; 11-a handle; 12-a drawing guide; 13-a water inlet pipeline; 20-a brewing chamber unit; 21-a cup cover; 211-water inlet; 212-upper needle; 22-a cup holder; 221-a handle; 23-a cup body; 231-a coffee outlet; 232-lower pricker; 30-a water inlet bracket; 31-a first one-way valve; 32-a first spring; 33-a water inlet joint; 40-a second pressure control mechanism; 41-a second one-way valve; 42= second tray; 43-a second spring; 44-a second adjusting screw; 50-a third pressure control mechanism; 51-a third one-way valve; 52-a third tray; 53-a third spring; 54-third adjusting screw.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The coffee maker provided by the embodiment comprises, as shown in fig. 1

A machine body 10 having a water inlet line 13;

a brewing chamber assembly consisting of a number of brewing chamber units 20, each of said brewing chamber units 20 being adapted to be alternatively connected to a brewing chamber receiving location of said machine body 10; each of the brewing chamber units 20 has a water inlet 211 communicated with the water inlet pipe 13 and a coffee outlet 231 for discharging brewed liquid independently.

In the coffee machine, each brewing cavity unit 20 is provided with the independent coffee outlet 231, so that coffee brewed by each brewing cavity unit 20 is discharged without being mixed with coffee brewed by other brewing cavity units 20, and the pure taste of the coffee is ensured. In use, a brewing chamber unit 20 corresponding to the brewing capsule can be selected from the brewing chamber assembly according to the type of the brewing capsule and is connected to the machine body 10, brewing water enters the brewing chamber unit 20 from a water inlet 211 of the brewing chamber unit, and brewed beverage is independently discharged from a coffee outlet 231 of the brewing chamber unit 20. When the type of the brewing capsule needs to be changed, the brewing chamber unit 20 connected to the machine body 10 is separated from the machine body 10, another brewing chamber unit 20 corresponding to the selected capsule is selected to be connected to the machine body 10, brewing water enters from the water inlet 211 of the brewing chamber unit 20, and the brewed beverage is independently discharged from the coffee outlet 231 of the brewing chamber unit 20. Therefore, the coffee machine provided by the embodiment can select different brewing chamber units 20 from the brewing chamber assembly according to different types/series of brewing capsules, and each brewing chamber unit 20 is provided with an independent coffee outlet 231, so that different types of coffee are discharged from respective outlets without mixing after being brewed, and the mouthfeel of the brewed capsules of different types/series is ensured. But also a different series of coffee can be quickly brewed by replacing the brewing chamber unit 20 connected to the machine body 10.

Depending on the type of infusion capsule, one brewing chamber unit 20 can be selected to be connected to the machine body 10, the remaining brewing chamber units 20 can be disconnected from the machine body 10 without occupying a work bench, so that the coffee machine occupies a small area and space on the work bench. When it is desired to increase the brewing type or series, it is only chosen to increase the number of brewing chamber units 20.

In addition, the brewing chamber assembly of the coffee maker comprises a plurality of independent brewing chamber units 20, and the damage of one brewing chamber unit 20 does not affect the continuous work of other brewing chamber units 20 and the machine body 10.

Optionally, the water inlet line 13 has a first pressure control mechanism thereon, so that the water in the machine body 10 has enough pressure to enter the water inlet line 13 after reaching the set temperature.

Optionally, each of the brewing chamber units 20 has at least one pressure control mechanism so that a certain pressure can be reached in the brewing chamber to meet the brewing requirements of the coffee. The pressure control means may be arranged at the inlet 211, or at the outlet 231, or at another port of the brewing chamber unit 20.

As shown in figure 3, each of said brewing chamber units 20 has two pressure control mechanisms, a second pressure control mechanism 40 in the line of said inlet 211 and a third pressure control mechanism 50 in the line of said outlet 231. The second pressure control mechanism 40 and the third pressure control mechanism 50 are overlapped and coact to enable the brewing chamber to reach a certain pressure value so as to brew coffee.

As shown in figures 4 and 5, said first pressure control means comprise, in sequence from a position distant from the centre of the brewing chamber to a position close to the centre of the brewing chamber, a first one-way valve 31 for controlling the direction of the water flow, a first spring 32 pressing against said first one-way valve 31; the first spring 32 has a compressed state allowing liquid to enter the inlet 211 line and an initial state preventing backflow of liquid. In the initial state of the first spring 32, the one-way valve blocks the passage of the water inlet pipeline 13. When the water pump in the machine body 10 pumps water to a certain pressure, the water acts on the first one-way valve 31, the first spring 32 is pressed, and the water pumped by the water pump enters the water inlet pipeline 13 for brewing the beverage in the brewing cavity unit 20 in the next step. The water inlet support 30 and the water inlet joint 33 are hollow structures, and the water inlet support and the water inlet joint are assembled to form the water inlet pipeline 13. The first check valve 31 and the first spring 32 are installed between the water inlet bracket 30 and the water inlet joint 33.

As shown in figures 6 and 7, said second pressure control means 40 comprise, in succession, from a position distant from the centre of the brewing chamber to a position close to the centre of the brewing chamber, a second one-way valve 41, a second tray 42 housing said second one-way valve 41, a second spring 43 pressing against said second tray 42, and a second adjusting screw 44 pressing against said second spring 43 for adjusting the pressure exerted on said second one-way valve 41; said second spring 43 has a compressed state allowing the liquid to enter the brewing chamber and an initial state preventing the liquid inside the brewing chamber from flowing out.

As shown in fig. 8 and 9, said third pressure control means 50 comprises, in order from a position close to the centre of the brewing chamber to a position in principle at the centre of the brewing chamber, a third one-way valve 51, a third tray 52 holding said third one-way valve 51, a third spring 53 pressing against said third tray 52, and a third adjusting screw 54 pressing against said third spring 53 for adjusting the pressure exerted on said third one-way valve 51; said third spring 53 has a compressed state allowing the liquid to flow out, and an initial state preventing the liquid in the brewing chamber from flowing out.

Said second springs 43 of said brewing chamber assembly are of the same elastomer, said third springs 53 are of the same elastomer; the plurality of brewing chamber units 20 are sequentially numbered, the compression amount of the second spring 43 in the initial state is set by the second adjusting screw 44 and sequentially increases according to the numbering sequence, the compression amount of the third spring 53 in the initial state is set by the third adjusting screw 54 and sequentially increases, and correspondingly, the plurality of brewing chamber units 20 can form gradually increasing pressure in the brewing chamber units according to the numbering sequence.

The second one-way valve 41 and the third one-way valve 51 of the brewing chamber assembly are identical one-way valves; the second adjustment screw 44 and the third adjustment screw 54 are the same adjustment screw; in the initial state of the brewing chamber assembly, the position relations of the plurality of second one-way valves 41 and the second adjusting screws 44, and the position relations of the plurality of third one-way valves 51 and the third adjusting screws 54 are consistent; the brewing cavity units 20 are sequentially numbered, the elastic moduli of the second spring 43 and the third spring 53 are sequentially increased according to the numbering sequence, and correspondingly, the brewing cavity units 20 can form gradually increased pressure inside the brewing cavity units according to the numbering sequence.

The brewing cavity unit 20 is connected with the machine body 10 in a drawing way; a drawing guide rail is formed on the machine body 10; the brewing chamber unit 20 has a plate body that is adapted to the drawer guide. The pull-out connection allows for quick and easy replacement of the brewing chamber unit 20 connected to the machine body 10. The plate is formed on the cup holder 22.

As shown in fig. 1, 2 and 3, the brewing chamber unit 20 comprises a cup body 23, a cup holder 22 integrally connected with the cup body 23, and a lid 21 connected to the cup holder 22 and capable of being turned over; the opening of the cup body 23 is covered by the cup cover 21 through turning and pressing, and the cup body 23 and the cup cover 21 form a brewing cavity. After the capsule is put into the cup body, the cup cover 21 arranged on the turnover cover is convenient to be connected with the cup body 23 to form a closed brewing cavity.

The cup holder 22 is formed with a handle 221 for facilitating the extraction of the brewing chamber unit 20 from the machine body 10. By means of the handle 221, the extraction operation of the brewing chamber unit 20 is facilitated.

The top of the machine body 10 is provided with a handle 11 which can rotate and is arranged in linkage with the water inlet bracket 30; the handle 11 has a first operating position for driving the water inlet support 30 to ascend so that the brewing chamber unit 20 can be pushed into the brewing chamber accommodating position, and a second operating position for driving the water inlet support 30 to descend so that the water inlet pipeline 13 formed on the water inlet support 30 is embedded with the convex water inlet 211 on the cup cover 21: the water inlet line 13 is engaged with the water inlet 211 to lock the brewing chamber unit 20 to the machine body 10. In use, the handle 11 will be turned to the first operating position to either push a brewing chamber unit 20 into the brewing chamber receiving position or to remove a brewing chamber unit 20 from the brewing chamber receiving position for separation from the machine body 10. The handle 11 is rotated to a second operating position, the water inlet pipe 13 is embedded with the water inlet 211, and the brewing chamber unit 20 is locked at the brewing chamber accommodating position by combining the drawing guide rail 12 on the machine body 10 and the plate body on the cup holder 22.

The cup body 23 and the matched cup cover 21 can be internally provided with a puncture needle for puncturing the coffee capsule according to the type of the set coffee capsule. As shown in FIG. 3, an upwardly pointing downward spike 232 is formed in the cup 23, and a downwardly pointing upward spike 212 is formed in the cap 21.

The coffee outlet 231 is formed at the bottom of the cup body 23, so that coffee can be discharged conveniently after being brewed; the water inlet 211 is formed on the cup cover 21, and brewing water flows downwards from the cup cover 21, so that coffee capsules can be brewed more fully.

The coffee machine provided by the embodiment can be used for brewing coffee capsules, and can also be used for brewing capsules such as milk bags, chocolate bags, cocoa powder bags and tea bags.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims

1. A coffee machine, characterized in that it comprises:

a machine body (10) having a water inlet line (13);

a brewing chamber assembly consisting of a number of brewing chamber units (20), each of said brewing chamber units (20) being adapted to be alternatively connected to a brewing chamber receiving location of said machine body (10); each brewing cavity unit (20) is respectively provided with a water inlet (211) communicated with the water inlet pipeline (13) and a coffee outlet (231) for independently discharging brewed liquid;

each of said brewing chamber units is adapted to receive a corresponding type of infusion capsule.

2. A coffee-making machine according to claim 1, characterized in that said water inlet circuit (13) has first pressure control means thereon.

3. A coffee machine according to claim 2, characterized in that each brewing chamber unit (20) has at least one pressure control mechanism.

4. A coffee machine according to claim 3, characterized in that each brewing chamber unit (20) has two pressure control mechanisms, respectively a second pressure control mechanism (40) located in the water inlet line and a third pressure control mechanism (50) located in the coffee outlet line.

5. A coffee-making machine according to claim 4, characterized in that said first pressure control means comprise, in order from a position remote from the centre of the brewing chamber to a position close to the centre of the brewing chamber, a first one-way valve (31) controlling the direction of the water flow, a first spring (32) pressing against said first one-way valve; the first spring (32) has a compressed state allowing liquid to enter the inlet line and an initial state preventing backflow of liquid.

6. A coffee-making machine according to claim 5, characterized in that said second pressure control means (40) comprise, in order from a position distant from the centre of the brewing chamber to a position close to the centre of the brewing chamber, a second one-way valve (41), a second tray (42) housing said second one-way valve (41), a second spring (43) pressing against said second tray (42), and a second adjusting screw (44) pressing against said second spring (43) for adjusting the pressure exerted on said second one-way valve (41); said second spring (43) having a compressed state allowing the liquid to enter the brewing chamber and an initial state preventing the liquid inside the brewing chamber from flowing out.

7. A coffee-making machine according to claim 6, characterized in that said third pressure control means (50) comprise, in order from a position close to the centre of the brewing chamber to a position in principle at the centre of the brewing chamber, a third one-way valve (51), a third tray (52) carrying said third one-way valve (51), a third spring (53) pressing against said third tray (52), and a third adjusting screw (54) pressing against said third spring (53) for adjusting the pressure exerted on said third one-way valve (51); said third spring (53) having a compressed state allowing the liquid to flow out, and an initial state preventing the liquid in the brewing chamber from flowing out.

8. A coffee machine according to claim 7, characterized in that said second spring (43) of said brewing chamber assembly is of the same elastomer and said third spring (53) is of the same elastomer; the brewing cavity units (20) are sequentially numbered, the compression amount of the second spring (43) in the initial state is set by the second adjusting screw (44) to be sequentially increased according to the numbering sequence, the compression amount of the third spring (53) in the initial state is set by the third adjusting screw (54) to be sequentially increased, and correspondingly, the brewing cavity units (20) can form gradually increased pressure in the cavities thereof according to the numbering sequence.

9. A coffee machine according to claim 7, characterized in that said second non return valve (41) and said third non return valve (51) of said brewing chamber assembly are identical non return valves; the second adjusting screw (44) and the third adjusting screw (54) are the same adjusting screw; the position relations of a plurality of second one-way valves (41) and second adjusting screws (44) and a plurality of third one-way valves (51) and third adjusting screws (54) of the brewing cavity assembly are consistent in the initial state; the brewing cavity units (20) are sequentially numbered, the elastic modulus of the second spring (43) and the elastic modulus of the third spring (53) are sequentially increased according to the numbering sequence, and correspondingly, the brewing cavity units (20) can form gradually increased pressure in the cavities thereof according to the numbering sequence.

10. A coffee machine according to any one of claims 1 to 9, characterized in that said brewing chamber unit (20) is connected to said machine body (10) by drawing; a drawing guide rail (12) is formed on the machine body (10); the brewing chamber unit (20) is provided with a plate body matched with the drawing guide rail (12).

11. A coffee machine according to any one of claims 1 to 9, characterized in that said brewing chamber unit (20) comprises a cup (23), a cup holder (22) integrally connected to said cup (23), and a lid (21) connected to said cup holder (22) and arranged to be turned on; the opening of the cup body (23) is covered by the cup cover (21) in a turning and pressing way, and a brewing cavity is formed by the cup body (23) and the cup cover (21); the cup body is formed on the cup stand (22).

12. A coffee machine according to claim 11, characterized in that said cup holder (22) has a handle (221) shaped thereon to facilitate the extraction of said brewing chamber unit (20) from said machine body (10).

13. The coffee machine according to claim 11, characterized in that the machine body (10) has a handle (11) on top that can rotate and is linked with the water inlet bracket (30); the handle (11) is provided with a first operating position which drives the water inlet bracket (30) to ascend so that the brewing cavity unit (20) can be pushed into the brewing cavity accommodating position, and a second operating position which drives the water inlet bracket (30) to descend so that a water inlet pipeline (13) formed on the water inlet bracket (30) is in scarf joint with a water inlet (211) protruding on the cup cover (21), wherein the water inlet pipeline (13) is in scarf joint with the water inlet (211) to lock the brewing cavity unit (20) on the machine body (10).

14. A coffee machine according to claim 11, characterized in that the cup (23) and the counter-cup (21) have needles shaped therein according to the type of coffee capsule set.

15. A coffee machine according to claim 11, characterized in that said outlet (231) is shaped at the bottom of said cup (23); the water inlet (211) is formed in the cup cover (21).