A waterway system for a coffee machine and a coffee machine

Abstract

The application provides a waterway system for a coffee machine and the coffee machine. The waterway system comprises a brewing device, a liquid supply assembly and a water discharge assembly. The brewing device comprises a brewing cavity and a brewing head which is movably extended into or moved away from the brewing cavity through an upper opening of the brewing cavity, and the brewing cavity is formed with a water passage which is in communication with the brewing cavity. The liquid supply assembly comprises a first pump body and a tank, and the first pump body is in communication with the tank and the water passage respectively, and is used for pumping the brewing liquid in the tank into the brewing cavity through the water passage. The water discharge assembly comprises a second pump body and a water receiving tray, and the second pump body is in communication with the water receiving tray and the water passage respectively, and is used for discharging the residual liquid in the brewing cavity into the water receiving tray through the water passage. The above structure can pump out the residual liquid in the brewing cavity through the water discharge assembly, solve the problem that the residual water in the pipeline flows back into the brewing cavity, and can control the dryness of the powder cake in the brewing cavity, so that the powder cake is formed completely.

Description

Technical Field

[0001] This application relates to the field of coffee machine technology, and more particularly to a water system for a coffee machine and a coffee machine. Background Technology

[0002] While existing coffee machines have automatic brewer cleaning functions, a small amount of residual water often remains in the brewing chamber and tubing after brewing. If this residual water is not completely removed, it can cause a series of problems. First, the residual water in the tubing may flow back into the brewing chamber during the next brewing cycle, affecting the taste of the coffee. Second, during the brewer's grounds removal process, residual water continuously drips into the grounds tray, further exacerbating the problem. This accumulation of moisture leads to an increased moisture content in the coffee puck in the grounds tray, resulting in insufficient drying and a loose, unformed puck. Utility Model Content

[0003] To address the aforementioned technical problems in the prior art, this application provides a water system and coffee machine for a coffee machine, which can extract residual liquid from the brewing chamber through a drain assembly, thus solving the problem of residual water flowing back into the brewing chamber from the pipeline.

[0004] This application provides a water system for a coffee machine, including: A brewing device includes a brewing chamber and a brewing head, wherein the brewing head extends into or moves away from the brewing chamber via an upper opening of the brewing chamber, and the brewing chamber has a water inlet communicating with the brewing chamber. The liquid supply assembly includes a first pump body and a housing, wherein the first pump body is connected to the housing and a water inlet respectively, and is used to pump the brewing liquid in the housing into the brewing chamber through the water inlet; The drain assembly includes a second pump body and a water receiving tray. The second pump body is connected to the water receiving tray and a water inlet, respectively, and is used to drain residual liquid in the brewing chamber through the water inlet into the water receiving tray. This structure can extract residual liquid from the brewing chamber using the drain assembly, solving the problem of residual water flowing back into the brewing chamber from the pipeline, and can also control the dryness of the powder cake in the brewing chamber, thereby ensuring the powder cake forms completely.

[0005] In some embodiments, a first pipe is connected to the water inlet, the liquid supply component is connected to the first pipe via a second pipe, and the drain component is connected to the first pipe via a third pipe. An electrically controlled valve is provided at the junction of the first, second, and third pipes. The electrically controlled valve has a first open state that connects the second and first pipes, and a second open state that connects the third and first pipes. Thus, the electrically controlled valve can be precisely controlled to enter the first open state during rinsing and cleaning operations, and precisely controlled to enter the second open state during draining operations, through the first, second, and third pipes and the electrically controlled valve at their junctions.

[0006] In some embodiments, the second pump body is configured as an air pump or a water pump. The aforementioned second pump body has a reasonable structure and can effectively extract residual liquid from the brewing chamber.

[0007] In some embodiments, the water system further includes a control device electrically connected to the first pump body, the electrically controlled valve, and the second pump body, respectively. The control device controls the first pump body to open after the electrically controlled valve enters the first open state, allowing the brewing liquid to enter the brewing chamber. After brewing is complete, it performs a draining operation to drain any remaining liquid in the brewing chamber into the receiving tray. The draining operation includes at least controlling the first pump body to close, the electrically controlled valve to enter the second open state, and the second pump body to open. This allows for precise draining after brewing is complete, reducing the dryness of the powder compact in the brewing chamber and improving the integrity of the powder compact's shape.

[0008] In some embodiments, the control device is further configured to perform a draining operation when the brewing head is located within the brewing chamber or after the brewing head has been moved out of the brewing chamber. This allows residual liquid in the brewing chamber to be drained into the drip tray when the brewing head is within the brewing chamber and / or after the brewing head has been moved out of the brewing chamber, thereby ensuring optimal draining performance.

[0009] In some embodiments, a movable push rod is provided inside the brewing chamber, and the water inlet is formed on the movable push rod. The movable push rod is constructed as the bottom of the brewing chamber, and the movable push rod moves vertically up and down within the brewing chamber. This eliminates the need for movement of the brewing chamber itself; instead, the slag is pushed out through the movement of the movable push rod, ensuring the structural stability of the brewing chamber and making the slag pushing method more efficient.

[0010] In some embodiments, the liquid supply assembly further includes a flow meter and a heating element. The outlet of the housing is connected to the inlet of the first pump body via the flow meter, and the heating element is connected to the outlet of the first pump body. In this way, the flow rate of the liquid flowing into the brewing chamber can be precisely controlled by the flow meter, and the brewing liquid flowing into the brewing chamber can be heated instantly by the heating element, thereby ensuring a more rational structure of the water system.

[0011] In some embodiments, the brewing head is provided with a liquid outlet, which is connected to the water inlet through the brewing chamber. The liquid outlet is used to discharge the liquid formed during brewing within the brewing chamber. Thus, the brewing liquid can enter the brewing chamber through the water inlet and exit through the liquid outlet after brewing. This bottom-up brewing method overcomes the liquid's own gravity, allowing for a longer mixing time between the brewing liquid and the powdered ingredients, further ensuring a better extraction effect.

[0012] In some embodiments, the water system further includes a slag collection box and a slag slide. The upper end of the slag slide is connected to the upper opening of the brewing chamber, and the lower end of the slag slide is connected to the slag collection box. After the movable push rod moves to the upper opening of the brewing chamber, the powder cake on the movable push rod slides into the slag collection box via the slag slide. In this way, the powder cake pushed out of the brewing chamber by the movable push rod slides into the slag collection box under the action of gravity. The structure is reasonably designed, and the powder cake can be effectively and quickly discharged from the brewing chamber.

[0013] This application also provides a coffee machine including the water system described in any of the above embodiments. The above structure can extract residual liquid from the brewing chamber through a drain assembly, solving the problem of residual water flowing back into the brewing chamber from the pipeline, and can also control the dryness of the coffee puck in the brewing chamber, thereby ensuring the coffee puck forms a complete shape.

[0014] Compared with the prior art, the beneficial effects of the embodiments of this application are as follows: This application, through the second pump body and the water receiving tray of the drain assembly, with the second pump body connected to the water receiving tray and the water inlet respectively, can realize the discharge of residual liquid in the brewing chamber to the water receiving tray through the water inlet via the second pump body. After the brewing operation and the cleaning operation of the brewing chamber are completed, the residual liquid in the brewing chamber can be extracted by the drain assembly, solving the problem of residual water in the pipeline flowing back into the brewing chamber, and can achieve the purpose of controlling the dryness of the powder cake in the brewing chamber, thereby making the powder cake form completely. Attached Figure Description

[0015] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0016] Figure 1 This is a simplified structural diagram of the water system for a coffee machine according to an embodiment of this application. The arrows shown in the diagram indicate the water flow direction during brewing and cleaning operations. Figure 2 This is a simplified structural diagram of the water system for a coffee machine according to an embodiment of this application. The arrows shown in the diagram indicate the direction of water flow during the draining operation, and the brewing head is located inside the brewing chamber. Figure 3 This is a simplified structural diagram of the water system for a coffee machine according to an embodiment of this application. The arrows shown in the diagram indicate the direction of water flow during the draining operation, and the brewing head is located outside the brewing chamber.

[0017] The components indicated by the reference numerals in the figure: 1. Brewing device; 11. Brewing chamber; 12. Brewing head; 13. Water inlet; 14. First pipe; 15. Movable push rod; 16. Liquid outlet; 17. First driving component; 2. Liquid supply assembly; 21. First pump body; 22. Housing; 23. Second pipe; 24. Flow meter; 25. Heating element; 3. Drainage assembly; 31. Second pump body; 32. Water receiving tray; 33. Third pipe; 4. Electrically controlled valve; 5. Powder and slag chute. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] This application provides a water system for a coffee machine. For example... Figures 1 to 3As shown, the water system includes a brewing device 1, a liquid supply assembly 2, and a drain assembly 3. The brewing device 1 includes a brewing chamber 11 and a brewing head 12. The brewing head 12 extends into or moves out of the brewing chamber 11 through an upper opening. The brewing chamber 11 has a water inlet 13 communicating with it. The liquid supply assembly 2 includes a first pump body 21 and a housing 22. The first pump body 21 is connected to the housing 22 and the water inlet 13, respectively, and is used to pump the brewing liquid in the housing 22 into the brewing chamber 11 through the water inlet 13. The drain assembly 3 includes a second pump body 31 and a water receiving tray 32. The second pump body 31 is connected to the water receiving tray 32 and the water inlet 13, respectively, and is used to drain residual liquid in the brewing chamber 11 into the water receiving tray 32 through the water inlet 13.

[0020] The aforementioned water inlet 13 can be formed in the lower part of the brewing chamber 11.

[0021] The above-mentioned brewing device 1 may also include a first driving member 17, which can drive the brewing head 12 to move vertically up and down, so as to drive the brewing head 12 to extend into the brewing chamber 11 to press the powder. After pressing the powder, brewing liquid enters the brewing chamber 11 to perform the brewing operation. After the brewing is completed, the brewing head 12 can be moved away from the brewing chamber 11 by the first driving member 17.

[0022] The aforementioned water system can perform rinsing, cleaning, and draining operations. For example... Figure 1 As shown in the diagram, the arrows indicate the direction of water flow during brewing and rinsing operations. Figure 2 and Figure 3 As shown in the figure, the arrows indicate the direction of water flow during the drainage operation.

[0023] The above-described brewing operation can be understood as the process of supplying brewing liquid to the brewing chamber 11 via the liquid supply component 2 after the powder is pressed into the brewing head 12, in order to brew the powdered food. After brewing, the brewing chamber 11 will contain a powder cake formed after brewing. At this time, a draining operation can be performed. The second pump body 31 of the draining component 3 drains the residual liquid in the brewing chamber 11 through the water inlet 13 into the water receiving tray 32, thereby controlling the dryness of the powder cake in the brewing chamber 11 and ensuring that the powder cake is fully formed.

[0024] After the powder compact is ejected from the brewing chamber 11, a cleaning operation can be performed. This cleaning operation involves rinsing the brewing chamber 11 via the liquid supply component 2 after the powder compact is ejected. Specifically, the liquid supply component 2 supplies cleaning solution to the brewing chamber 11 through the water inlet 13, achieving the purpose of quickly cleaning the brewing chamber 11. After the cleaning operation is completed, a draining operation can be performed again to extract any remaining liquid from the brewing chamber 11 through the drain component 3, ensuring that the inside of the brewing chamber 11 is dry and ready for the next brewing.

[0025] The residual liquid in the brewing chamber 11 can be understood as the liquid on the inner wall of the brewing chamber 11 after brewing, the liquid in the powder cake formed by brewing, and the cleaning liquid remaining in the brewing chamber 11 after washing.

[0026] This application utilizes a second pump body 31 and a water receiving tray 32 in the drain assembly 3. The second pump body 31 is connected to the water receiving tray 32 and the water inlet 13, respectively. This allows residual liquid in the brewing chamber 11 to be drained into the water receiving tray 32 through the water inlet 13 via the second pump body 31. After the brewing operation and cleaning operation of the brewing chamber 11 are completed, the residual liquid in the brewing chamber 11 can be extracted through the drain assembly 3, solving the problem of residual water in the pipeline flowing back into the brewing chamber 11. It also achieves the purpose of controlling the dryness of the powder cake in the brewing chamber 11, thereby ensuring that the powder cake is formed completely.

[0027] In some embodiments, such as Figures 1 to 3 As shown, a first pipe 14 is connected to the water inlet 13. The liquid supply component 2 is connected to the first pipe 14 through the second pipe 23. The drain component 3 is connected to the first pipe 14 through the third pipe 33. An electric control valve 4 is provided at the junction of the first pipe 14, the second pipe 23 and the third pipe 33. The electric control valve 4 has a first open state that connects the second pipe 23 and the first pipe 14, and a second open state that connects the third pipe 33 and the first pipe 14.

[0028] Thus, the first pipe 14, the second pipe 23, and the third pipe 33, as well as the electrically controlled valve 4 at the junction of the three, can be used to precisely control the electrically controlled valve 4 to enter the first open state during the rinsing and cleaning operations, and to precisely control the electrically controlled valve 4 to enter the second open state during the draining operation.

[0029] The aforementioned electronically controlled valve 4 can specifically be a three-way solenoid valve. Through precise control of the electronically controlled valve 4, it can perform brewing and cleaning operations when it enters the first open state, and perform water draining operations when it enters the second open state, thus ensuring the reliability of the coffee machine in performing various operations.

[0030] In some embodiments, the second pump body 31 is configured as an air pump or a water pump. The structure of the second pump body 31 is reasonable and can effectively extract residual liquid in the brewing chamber 11.

[0031] In some embodiments, the water system further includes a control device (not shown in the figure), which is electrically connected to the first pump body 21, the solenoid valve 4, and the second pump body 31, respectively. The control device is used to control the solenoid valve 4 to enter the first open state, and then control the first pump body 21 to open so that the brewing liquid enters the brewing chamber 11. After brewing is completed, the control device performs a draining operation to drain the residual liquid in the brewing chamber 11 into the water receiving tray 32. The draining operation includes at least controlling the first pump body 21 to close, the solenoid valve 4 to enter the second open state, and the second pump body 31 to open.

[0032] In this way, the water draining operation can be precisely performed after the brewing liquid is finished, thereby reducing the dryness of the powder in the brewing chamber 11 and improving the integrity of the powder's formation.

[0033] The aforementioned control device can also perform a cleaning operation after the first draining operation to reduce the dryness of the powder cake in the brewing chamber 11. Specifically, it controls the first pump body 21 to open, the second pump body 31 to close, and the electronically controlled valve 4 to enter the first open state, so as to rinse the brewing chamber 11 through the liquid supply assembly 2, achieving the purpose of quickly cleaning the brewing chamber 11. After the cleaning operation is completed, a second draining operation can be performed to extract the residual liquid in the brewing chamber 11 through the draining assembly 3, so as to ensure that the inside of the brewing chamber 11 is dry and ready for the next brewing.

[0034] It should be noted that the control device can be built using electronic components such as timers, comparators, registers, and digital logic circuits, or implemented using processor chips such as microcontrollers, microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and application-specific integrated circuits (ASICs) and their peripheral circuits.

[0035] In some embodiments, the control device is further configured to perform a draining operation when the brewing head 12 is located within the brewing chamber 11 and / or after the brewing head 12 has moved out of the brewing chamber 11. Figure 2 and Figure 3 As shown, Figure 2 The brewing head 12 shown is located inside the brewing chamber 11. Figure 3 The brewing head 12 shown is located outside the brewing chamber 11.

[0036] In this way, when the brewing head 12 is in the brewing chamber 11 and / or after the brewing head 12 is moved away from the brewing chamber 11, the residual liquid in the brewing chamber 11 can be drained into the water receiving tray 32 by the draining operation, thereby ensuring a better draining effect.

[0037] When the brewing head 12 moves away from the brewing chamber 11, a negative pressure is generated inside the brewing chamber 11. This can cause water from the pipe connected to the water inlet 13 to be drawn into the brewing chamber 11, preventing it from remaining dry and clean. By controlling the water draining operation after the brewing head 12 moves away from the brewing chamber 11, it can be ensured that the brewing chamber 11 remains effectively dry after the brewing head 12 is removed, preventing the accumulation of dirt or scale. Users do not need to perform frequent cleaning and maintenance, making it easier to maintain the cleanliness and hygiene of the coffee machine.

[0038] In some embodiments, such as Figures 1 to 3 As shown, a movable push rod 15 is provided inside the brewing chamber 11, and a water inlet 13 is formed on the movable push rod 15. The movable push rod 15 is constructed as the bottom of the brewing chamber 11, and the movable push rod 15 moves vertically up and down inside the brewing chamber 11.

[0039] In this way, the coffee grounds (i.e., coffee dregs) located on the movable push rod 15 can be pushed out of the brewing chamber 11 after brewing is completed. The brewing chamber 11 does not need to move. Instead, the coffee grounds are pushed out by the movement of the movable push rod 15, which can ensure the structural stability of the brewing chamber 11 itself and make the method of pushing coffee grounds more reasonable.

[0040] The above-mentioned brewing device 1 may also include a second driving member, which can drive the movable push rod 15 to move up and down in the vertical direction within the brewing chamber 11.

[0041] The bottom of the aforementioned movable push rod 15 is connected to an adapter, which is connected to the water inlet 13. The liquid supply assembly 2 supplies liquid to the water inlet 13 through this adapter.

[0042] After the aforementioned push rod 15 pushes the powder compact to the upper opening of the brewing chamber 11, the powder compact can be pushed out by the slag pushing assembly. This application does not limit the specific structure of the slag pushing assembly, as long as it can push out the powder compact. For example, the slag pushing assembly includes a scraper plate that can move in the horizontal direction, and the scraper plate can move to push out the powder compact.

[0043] In some embodiments, such as Figures 1 to 3 As shown, the liquid supply assembly 2 also includes a flow meter 24 and a heating element 25. The outlet of the housing 22 is connected to the inlet of the first pump body 21 through the flow meter 24, and the heating element 25 is connected to the outlet of the first pump body 21.

[0044] In this way, the flow rate of liquid flowing into the brewing chamber 11 can be precisely controlled by the flow meter 24, and the brewing liquid flowing into the brewing chamber 11 can be heated in real time by the heating element 25, thereby ensuring a more reasonable structure of the water system.

[0045] In some embodiments, such as Figures 1 to 3As shown, the brewing head 12 is provided with a liquid outlet 16. The liquid outlet 16 and the water inlet 13 are connected through the brewing chamber 11. The liquid outlet 16 is used to discharge the liquid formed by brewing in the brewing chamber 11.

[0046] In this way, the brewing liquid can enter the brewing chamber 11 through the water inlet 13 and be discharged out of the brewing chamber 11 through the liquid outlet 16 after brewing. The bottom-up brewing method can overcome the gravity of the liquid itself, which can make the mixing time of the brewing liquid and powdered ingredients longer, and further ensure a better extraction effect.

[0047] The aforementioned water inlet 13 is used to supply brewing liquid to the brewing chamber 11. After the brewing liquid enters the brewing chamber 11 through the water inlet 13, it brews the compacted powdered ingredients. The beverage formed after brewing will be discharged to the liquid outlet 16 under the water pressure of the water inlet 13, so that the beverage formed after brewing is discharged through the liquid outlet 16.

[0048] The brewing device 1 may also include a coffee outlet tube, which is detachably mounted on the brewing head 12, and an outlet 16 is formed on the coffee outlet tube.

[0049] In some embodiments, such as Figures 1 to 3 As shown, the water system also includes a slag receiving box (not shown in the figure) and a powder slag slide 5. The upper end of the powder slag slide 5 is connected to the upper opening of the brewing chamber 11, and the lower end of the powder slag slide 5 is connected to the slag receiving box. After the movable push rod 15 moves to the upper opening of the brewing chamber 11, the powder cake on the movable push rod 15 slides into the slag receiving box through the powder slag slide 5.

[0050] In this way, the powder cake pushed out of the brewing chamber 11 by the movable push rod 15 can slide into the residue box through the powder residue slide 5 under the action of gravity. The structure is reasonably designed and the powder cake can be effectively and quickly discharged into the brewing chamber 11.

[0051] The aforementioned powder residue chute 5 can be inclined to facilitate the powder cake sliding into the residue collection box via the powder residue chute 5.

[0052] The following describes the working process of the water system used in the coffee machine: After the brewing device 1 collects, tamps, and brews the coffee, a coffee puck remains in the brewing chamber 11. At this point, a draining operation can be performed. The second pump 31 of the draining assembly 3 drains the residual liquid in the brewing chamber 11 through the water inlet 13 into the water tray 32, thereby controlling the dryness of the coffee puck in the brewing chamber 11 and ensuring that the coffee puck remains intact. After the coffee puck is pushed out of the brewing chamber 11, a cleaning operation can be performed. The liquid supply assembly 2 provides cleaning solution to the brewing chamber 11 through the water inlet 13, achieving the purpose of quickly cleaning the brewing chamber 11. After the cleaning operation is completed, a draining operation can be performed again to extract the residual liquid in the brewing chamber 11 through the draining assembly 3, ensuring that the inside of the brewing chamber 11 is dry and ready for the next brewing.

[0053] This application also provides a coffee machine that includes the water system of any of the above embodiments.

[0054] The coffee machine using the above-mentioned water system, through the second pump body 31 and the water tray 32 of the drain assembly 3, with the second pump body 31 connected to the water tray 32 and the water inlet 13 respectively, can discharge the residual liquid in the brewing chamber 11 to the water tray 32 through the water inlet 13 via the second pump body 31. After the brewing operation and the cleaning operation of the brewing chamber 11 are completed, the residual liquid in the brewing chamber 11 can be extracted through the drain assembly 3, solving the problem of residual water in the pipeline flowing back into the brewing chamber 11. It can also achieve the purpose of controlling the dryness of the coffee maker in the brewing chamber 11, thereby ensuring that the coffee maker is formed completely.

[0055] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of this utility model.

Claims

1. A water system for a coffee machine, characterized in that, include: The brewing device (1) includes a brewing chamber (11) and a brewing head (12). The brewing head (12) extends into or moves away from the brewing chamber (11) through the upper opening of the brewing chamber (11). The brewing chamber (11) has a water inlet (13) communicating with the brewing chamber (11). The liquid supply assembly (2) includes a first pump body (21) and a housing (22). The first pump body (21) is connected to the housing (22) and the water inlet (13) respectively, and is used to pump the brewing liquid in the housing (22) into the brewing chamber (11) through the water inlet (13). The drain assembly (3) includes a second pump body (31) and a water receiving tray (32). The second pump body (31) is connected to the water receiving tray (32) and the water inlet (13) respectively, and is used to drain the residual liquid in the brewing chamber (11) into the water receiving tray (32) through the water inlet (13).

2. The water system for a coffee machine according to claim 1, characterized in that, The water inlet (13) is connected to a first pipe (14). The liquid supply component (2) is connected to the first pipe (14) through a second pipe (23). The drain component (3) is connected to the first pipe (14) through a third pipe (33). An electric control valve (4) is provided at the junction of the first pipe (14), the second pipe (23) and the third pipe (33). The electric control valve (4) has a first open state that allows the second pipe (23) and the first pipe (14) to conduct, and a second open state that allows the third pipe (33) and the first pipe (14) to conduct.

3. The water system for a coffee machine according to claim 1, characterized in that, The second pump body (31) is constructed as an air pump or a water pump.

4. The water system for a coffee machine according to claim 2, characterized in that, The water system also includes a control device, which is electrically connected to the first pump body (21), the electric control valve (4), and the second pump body (31), respectively. The control device is used to control the electric control valve (4) to enter the first open state, and then control the first pump body (21) to open so that the brewing liquid enters the brewing chamber (11). After brewing is completed, the control device performs a draining operation to drain the residual liquid in the brewing chamber (11) into the water receiving tray (32). The draining operation includes at least controlling the first pump body (21) to close, the electric control valve (4) to enter the second open state, and the second pump body (31) to open.

5. The water system for a coffee machine according to claim 4, characterized in that, The control device is also used to perform a draining operation when the brewing head (12) is located in the brewing chamber (11) or after the brewing head (12) is moved away from the brewing chamber (11).

6. The water system for a coffee machine according to claim 4, characterized in that, The brewing chamber (11) is provided with a movable push rod (15), and the water inlet (13) is formed on the movable push rod (15). The movable push rod (15) is constructed as the bottom of the brewing chamber (11), and the movable push rod (15) moves vertically up and down in the brewing chamber (11).

7. The water system for a coffee machine according to claim 1, characterized in that, The liquid supply assembly (2) also includes a flow meter (24) and a heating element (25). The outlet of the housing (22) is connected to the inlet of the first pump body (21) through the flow meter (24), and the heating element (25) is connected to the outlet of the first pump body (21).

8. The water system for a coffee machine according to claim 1, characterized in that, The brewing head (12) is provided with a liquid outlet (16), and the liquid outlet (16) and the water inlet (13) are connected through the brewing chamber (11). The liquid outlet (16) is used to discharge the liquid formed by brewing in the brewing chamber (11).

9. The water system for a coffee machine according to claim 6, characterized in that, The water system also includes a slag receiving box and a powder slag slide (5). The upper end of the powder slag slide (5) is connected to the upper opening of the brewing chamber (11), and the lower end of the powder slag slide (5) is connected to the slag receiving box. After the movable push rod (15) moves to the upper opening of the brewing chamber (11), the powder cake on the movable push rod (15) slides into the slag receiving box through the powder slag slide (5).

10. A coffee machine, characterized in that, Includes the waterway system as described in any one of claims 1 to 9.

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