Waterway assembly capable of adjusting pressure of waterway of coffee machine

Abstract

The utility model relates to a waterway assembly capable of adjusting the waterway pressure of a coffee machine, which comprises a water tank, a pumping waterway mechanism and a pressure relief mechanism, and the pumping waterway mechanism at least comprises a first pumping waterway and a second pumping waterway; the input ends of the first pumping waterway and the second pumping waterway are connected with the water tank, the output ends of the first pumping waterway and the second pumping waterway are connected with the water heating mechanism, and the pressure relief ends of the first pumping waterway and the second pumping waterway are connected with the pressure relief mechanism; when the first pumping water way and the second pumping water way operate simultaneously, the pressure relief mechanism is started to adjust the pressure of the coffee machine water way. The first pumping water channel and the second pumping water channel are opened at the same time, the water yield of a commercial coffee machine is simulated, the liquid flow of the coffee machine is increased to two times, the playability of the whole coffee machine is improved, the use experience of a user is improved, pressure regulation can be achieved through external setting, and the requirements of consumers on the market for different pressures are met.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machine water circuits, and specifically relates to a water circuit assembly that can adjust the water pressure of a coffee machine. Background Art

[0002] Conventional coffee machines on the market usually only have one electromagnetic pump, and the functions of single-cup coffee, double-cup coffee, hot water output, and steam output are realized by controlling the electromagnetic pump. There are three major problems with a single electromagnetic water pump:

[0003] 1. The water pump pressure is single. Even if subsequent debugging is carried out, it will cause a sharp drop in the water inlet pressure of the coffee machine and cannot meet the pressure requirements of the entire coffee machine.

[0004] 2. A single water pump results in a low water inlet flow rate. The water pump of a household coffee machine already has a problem of low flow rate, and there is no pressure regulating structure. Once the pressure is regulated, the water pump pressure and flow rate cannot be met. One is that the water pumps on the conventional market are all electromagnetic pumps, and their working principle is to achieve pressure by relying on electromagnetic force and directional spring force. When the front end is blocked and the water pump reaches the maximum pressure, the water pump will be in a prohibited state, and at this time, no power can be provided to the entire coffee machine anymore. The most intuitive manifestation is that when the coffee powder is too fine to brew coffee or there is a foreign object blocking the water circuit, the foreign object cannot be flushed out of the water circuit. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water circuit assembly that can adjust the water pressure of a coffee machine. When the first pumping water circuit and the second pumping water circuit are opened simultaneously (both water pumps work at the same time), it can provide twice the liquid flow rate for the coffee machine, simulate the water output of a commercial coffee machine, increase the liquid flow rate of the coffee machine to twice, improve the playability of the entire coffee machine, and improve the user experience. It can achieve pressure regulation through external settings to meet the needs of consumers in the market for different pressures.

[0006] The purpose of the utility model is realized as follows:

[0007] A water circuit assembly that can adjust the water pressure of a coffee machine includes a water tank, and also includes a pumping water circuit mechanism and a pressure relief mechanism. The pumping water circuit mechanism includes at least a first pumping water circuit and a second pumping water circuit;

[0008] The input ends of the first pumping water circuit and the second pumping water circuit are connected to the water tank, the output ends of the first pumping water circuit and the second pumping water circuit are connected to the water heating mechanism, and the pressure relief ends of the first pumping water circuit and the second pumping water circuit are connected to the pressure relief mechanism;

[0009] When the first pumping water circuit and the second pumping water circuit operate simultaneously, the pressure relief mechanism is activated to adjust the water pressure of the coffee machine.

[0010] The pressure relief mechanism at least includes a first pressure relief component and a second pressure relief component. The first pumping water circuit and the second pumping water circuit operate simultaneously. The first pressure relief component or the second pressure relief component is started separately, or the first pressure relief component and the second pressure relief component are started synchronously to achieve a dual pressure regulation structure for the water circuit of the coffee machine.

[0011] The pressures at which the first pressure relief component and the second pressure relief component relieve pressure are different. The output ends of the first pressure relief component and the second pressure relief component are connected to the water tank. When the first pressure relief component and / or the second pressure relief component is started, the liquid output by the first pumping water circuit and the second pumping water circuit returns to the water tank.

[0012] The water heating mechanism includes a first heating pot water circuit component provided on the coffee machine. One-way valves for allowing the liquid to flow unidirectionally into the first heating pot water circuit component are provided at the output ends of the first pumping water circuit and the second pumping water circuit.

[0013] When the coffee machine is in the standby state, the first pumping water circuit, the second pumping water circuit, the first pressure relief component, the second pressure relief component, and the one-way valve are all in the closed state to form a water circuit seal for the coffee machine.

[0014] When the coffee machine is in the working state, the first pumping water circuit and the second pumping water circuit operate simultaneously. The liquid in the water tank pushes open the one-way valve along the first pumping water circuit and the second pumping water circuit and enters the first heating pot water circuit component.

[0015] The output end and the pressure relief end of the first pumping water circuit are the same end, and the output end and the pressure relief end of the second pumping water circuit are the same end.

[0016] The coffee machine is provided with a second heating pot water circuit component for connecting a steam pipe. The input end of the second heating pot water circuit component is connected to the water tank through a water pump.

[0017] The output end of the second heating pot water circuit component is connected to the steam pipe; the output end of the first heating pot water circuit component is connected to the second heating pot water circuit component.

[0018] A first solenoid valve is provided between the output end of the second heating pot water circuit component and the steam pipe, and a second solenoid valve is provided between the output end of the first heating pot water circuit component and the second heating pot water circuit component.

[0019] When the second solenoid valve is in the closed state, the liquid in the water tank flows to the second heating pot water circuit component for primary heating. When the first solenoid valve is in the open state, steam is output from the steam pipe.

[0020] When the second solenoid valve is in the open state, a part of the liquid in the water tank flows to the second heating pot water circuit component, and another part of the liquid in the water tank flows to the first heating pot water circuit component for heating and then flows to the second heating pot water circuit component.

[0021] The first solenoid valve is connected to a pressure relief tank.

[0022] A third solenoid valve for connecting to a pressure relief tank is provided at the output end of the first heating pot water circuit assembly.

[0023] A fourth solenoid valve for connecting to a hot water pipe is provided at the output end of the first heating pot water circuit assembly.

[0024] A first flowmeter is provided between the input ends of the first pumping water circuit and the second pumping water circuit and the water tank respectively.

[0025] A second flowmeter is provided between the output ends of the first pressure relief assembly and the second pressure relief assembly and the water tank respectively.

[0026] The first pumping water circuit, the second pumping water circuit, the first pressure relief assembly and the second pressure relief assembly are all integrally provided on the same substrate;

[0027] The first pumping water circuit includes a first water pump and a first S3 valve connected to the first water pump and switching the first pumping water circuit between an open state and a closed state;

[0028] The second pumping water circuit includes a second water pump and a second S3 valve connected to the second water pump and switching the second pumping water circuit between an open state and a closed state;

[0029] The first pressure relief assembly includes a first pressure relief valve and a fifth solenoid valve connected to the first pressure relief valve and switching the first pressure relief assembly between an open state and a closed state;

[0030] The second pressure relief assembly includes a second pressure relief valve and a sixth solenoid valve connected to the second pressure relief valve and switching the second pressure relief assembly between an open state and a closed state;

[0031] A connection valve is provided on the substrate, and a first joint for connecting to the first pumping water circuit and a second joint for connecting to the second pumping water circuit are provided on the connection valve;

[0032] The connection valve further includes a third joint for connecting to the first pressure relief assembly and a fourth joint for connecting to the second pressure relief assembly;

[0033] The connection valve further includes a pipe joint for connecting to the first heating pot water circuit assembly;

[0034] A check valve with an open state and a closed state is provided on the pipe joint;

[0035] The check valve includes a plug, a spring and a piston;

[0036] The plug is fixed in the pipe joint, one end of the spring elastically acts on the plug, and the other end of the spring elastically acts on the piston;

[0037] The check valve is in the closed state, the spring releases elastic force and the piston seals the output end of the pipe joint;

[0038] The check valve is in the open state, the piston presses the spring, and the output end of the pipe joint opens.

[0039] The beneficial effects of the present utility model are as follows:

[0040] The first pumping waterway and the second pumping waterway are opened simultaneously (both water pumps work simultaneously), which can provide twice the liquid flow rate to the coffee machine, sufficient to simulate the water output of a commercial coffee machine.

[0041] In view of the fact that the liquid flow rate of the coffee machine is increased to twice, the playability of the entire coffee machine is improved, enhancing the user experience. Pressure regulation can be achieved through external settings to meet the needs of consumers in the market for different pressures. At the same time, with the first pressure relief component and the second pressure relief component, the solenoid valves of the two pressure relief components respectively control a pressure reduction structure of 6 bar and 3 bar, achieving the most desired 9 bar and / or 12 bar ideal pressure requirements of consumers in the market. It can be understood that when the first pumping waterway and the second pumping waterway are opened simultaneously, one of the pressure relief components is opened, and a pressure reduction of 6 bar or 3 bar can be achieved. When both pressure relief components are opened, a pressure reduction of 9 bar can be achieved, or by additionally adding another pressure relief component that realizes a 3 bar pressure reduction, and when the three pressure relief components are opened simultaneously, a pressure reduction of 12 bar can be achieved. Moreover, the two water pumps are two power sources, and through the pressure relief method, the water pumps can keep pumping water without a static state, thus realizing the advantages of the rotary pump of a commercial coffee machine, continuously providing water inlet pressure to the coffee machine, and achieving the effect of making coffee even when the coffee powder is very fine.

[0042] To sum up, the greatest advantage of this invention is that by changing the water volume of the water pump and matching the pressure relief structure, the working conditions of the rotary pump of a commercial machine are realized. Moreover, pressure regulation can be carried out, and two different pressures can be customized for customers to achieve three pressure combinations, increasing the playability of customers.

[0043] This solves the technical problem that the electromagnetic pump cannot continue to provide water inlet power for the coffee machine under the conventional maximum pressure, and the waterway mechanism of the present utility model can still continuously provide power to the whole machine when in the pressure reduction state, realizing the function of extracting coffee liquid even when the coffee powder is very fine, and realizing the functions of a commercial coffee machine.

[0044] In terms of cost and volume, both the first pumping waterway and the second pumping waterway adopt water pumps. The water pumps are electromagnetic pumps and are equipped with S3 valves and pressure relief components. The volume should be 1 / 6 of that of a commercial coffee machine, and the cost should also be 1 / 5 of the cost of a commercial coffee machine.

[0045] An innovation for a household coffee machine enables a small household appliance to experience the functions of a commercial coffee machine. Brief Description of the Drawings

[0046] Figure 1 It is a schematic plan view of the waterway mechanism of an embodiment of the present utility model.

[0047] Figure 2 It is a schematic perspective view of the waterway mechanism of an embodiment of the present utility model.

[0048] Figure 3 It is a schematic exploded assembly view of the waterway mechanism of an embodiment of the present utility model.

[0049] Figure 4 It is a schematic view of the waterway structure of an embodiment of the present utility model when the coffee machine is in the standby state.

[0050] Figure 5 It is a schematic view of the structure of an embodiment of the present utility model when the pressure relief component is in the closed state during the coffee-making state of the coffee machine.

[0051] Figure 6 It is a schematic view of the structure of an embodiment of the present utility model when the first pressure relief component is in the open state and the second pressure relief component is in the closed state during the coffee-making state of the coffee machine.

[0052] Figure 7 It is a schematic view of the structure of an embodiment of the present utility model when the first pressure relief component is in the closed state and the second pressure relief component is in the open state during the coffee-making state of the coffee machine.

[0053] Figure 8 It is a schematic view of the structure of an embodiment of the present utility model when both the first pressure relief component and the second pressure relief component are in the open state during the coffee-making state of the coffee machine.

[0054] Figure 9 It is a schematic view of the waterway structure for the coffee machine to output hot water in an embodiment of the present utility model.

[0055] Figure 10 It is a schematic view of the waterway structure of the coffee machine in the super steam state in an embodiment of the present utility model. Detailed Embodiment

[0056] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0057] Refer to Figures 1 - 10 , a waterway assembly that can adjust the waterway pressure of a coffee machine, including a water tank 1, a first pumping waterway 2, a second pumping waterway 3, and a first pressure relief component 4 and a second pressure relief component 5;

[0058] The input ends of both the first pumping water circuit 2 and the second pumping water circuit 3 are connected to the water tank 1, and the output ends of both the first pumping water circuit 2 and the second pumping water circuit 3 are connected to the first heating pot water circuit assembly 6 of the coffee machine;

[0059] The output ends of both the first pumping water circuit 2 and the second pumping water circuit 3 are also connected to the first pressure relief assembly 4 and the second pressure relief assembly 5;

[0060] Both the first pressure relief assembly 4 and the second pressure relief assembly 5 have an open state and a closed state, and the output ends of both the first pressure relief assembly 4 and the second pressure relief assembly 5 are connected to the water tank 1;

[0061] When the first pressure relief assembly 4 and the second pressure relief assembly 5 are in the closed state, the liquid in the water tank 1 enters the first heating pot water circuit assembly 6 of the coffee machine along the first pumping water circuit 2 and the second pumping water circuit 3;

[0062] When the first pressure relief assembly 4 and / or the second pressure relief assembly 5 is in the open state, part of the liquid in the water tank 1 enters the first heating pot water circuit assembly 6 of the coffee machine through the first pumping water circuit 2 and the second pumping water circuit 3, and the other part of the liquid in the water tank 1 returns to the water tank 1 along the first pressure relief assembly 4 or the second pressure relief assembly 5 to achieve the regulation of the water pressure of the coffee machine water circuit.

[0063] A check valve 7 for allowing liquid to flow unidirectionally into the first heating pot water circuit assembly 6 is provided at the output ends of both the first pumping water circuit 2 and the second pumping water circuit 3;

[0064] Both the first pumping water circuit 2, the second pumping water circuit 3 and the check valve 7 have an open state and a closed state;

[0065] When the coffee machine is in the standby state, the first pumping water circuit 2, the second pumping water circuit 3, the first pressure relief assembly 4, the second pressure relief assembly 5 and the check valve 7 are all in the closed state to form the water circuit seal of the coffee machine;

[0066] When the coffee machine is in the working state, the first pumping water circuit 2 and the second pumping water circuit 3 are in the open state, and the liquid in the water tank 1 pushes open the check valve 7 along the first pumping water circuit 2 and the second pumping water circuit 3 and enters the first heating pot water circuit assembly 6.

[0067] The pressures at which the first pressure relief assembly 4 and the second pressure relief assembly 5 relieve pressure are different.

[0068] The coffee machine is provided with a second heating pot water circuit assembly 8 for connecting a steam pipe 9, and the input end of the second heating pot water circuit assembly 8 is connected to the water tank 1 through a water pump 12;

[0069] The output end of the second heating pot water circuit assembly 8 is connected to the steam pipe 9; the output end of the first heating pot water circuit assembly 6 is connected to the second heating pot water circuit assembly 8;

[0070] A first solenoid valve 10 is provided between the output end of the second heat - generating pot water circuit assembly 8 and the steam pipe 9, and a second solenoid valve 11 is provided between the output end of the first heat - generating pot water circuit assembly 6 and the second heat - generating pot water circuit assembly 8;

[0071] The second solenoid valve 11 is in the closed state, the liquid in the water tank 1 flows to the second heat - generating pot water circuit assembly 8 for primary heating, the first solenoid valve 10 is in the open state, and the steam pipe 9 outputs steam;

[0072] The second solenoid valve 11 is in the open state, a part of the liquid in the water tank 1 flows to the second heat - generating pot water circuit assembly 8, and another part of the liquid in the water tank 1 flows to the first heat - generating pot water circuit assembly 6, is heated and then flows to the second heat - generating pot water circuit assembly 8.

[0073] The first solenoid valve 10 is connected to the pressure - relief tank 13.

[0074] A third solenoid valve 14 for connecting to the pressure - relief tank 13 is provided at the output end of the first heat - generating pot water circuit assembly 6.

[0075] A fourth solenoid valve 15 for connecting to the hot - water pipe 16 is provided at the output end of the first heat - generating pot water circuit assembly 6.

[0076] A first flowmeter 17 is provided between the input ends of the first pumping water circuit 2 and the second pumping water circuit 3 and the water tank 1 respectively.

[0077] A second flowmeter 18 is provided between the output ends of the first pressure - relief component 4 and the second pressure - relief component 5 and the water tank 1 respectively.

[0078] The first pumping water circuit 2, the second pumping water circuit 3, the first pressure - relief component 4 and the second pressure - relief component 5 are all integrally provided on the same substrate 19;

[0079] The first pumping water circuit 2 includes a first water pump 20 and a first S3 valve 21 connected to the first water pump 20 and used to switch the open state and the closed state of the first pumping water circuit 2;

[0080] The second pumping water circuit 3 includes a second water pump 22 and a second S3 valve 23 connected to the second water pump 22 and used to switch the open state and the closed state of the second pumping water circuit 3;

[0081] The first pressure - relief component 4 includes a first pressure - relief valve 24 and a fifth solenoid valve 25 connected to the first pressure - relief valve 24 and used to switch the open state and the closed state of the first pressure - relief component 4;

[0082] The second pressure - relief component 5 includes a second pressure - relief valve 26 and a sixth solenoid valve 27 connected to the second pressure - relief valve 26 and used to switch the open state and the closed state of the second pressure - relief component 5;

[0083] A connection valve 28 is provided on the substrate 19. A first joint 29 for connecting to the first pumping water circuit 2 and a second joint 30 for connecting to the second pumping water circuit 3 are provided on the connection valve 28;

[0084] The connection valve 28 is further provided with a third joint 31 for connecting to the first pressure relief component 4 and a fourth joint 32 for connecting to the second pressure relief component 5;

[0085] The connection valve 28 is further provided with a pipe joint 34 for connecting to the first heating pot water circuit assembly 6;

[0086] A check valve 7 with an open state and a closed state is provided on the pipe joint 34;

[0087] The check valve 7 includes a plug 35, a spring 36 and a piston 37;

[0088] The plug 35 is fixed in the pipe joint 34. One end of the spring 36 elastically acts on the plug 35, and the other end of the spring 36 elastically acts on the piston 37;

[0089] When the check valve 7 is in the closed state, the spring 36 releases elastic force and the piston 37 seals the output end of the pipe joint 34;

[0090] When the check valve 7 is in the open state, the piston 37 compresses the spring 36 and the output end of the pipe joint 34 opens.

[0091] In this embodiment, silica gel buffer blocks 38 are provided at the front and rear ends of the first water pump 20 and the second water pump 22 corresponding to the substrate 19 to reduce the vibration force on the substrate 19 when the two water pumps work simultaneously.

[0092] In this embodiment, a pressure-resistant pipe 39 is provided on each S3 valve, and a sealing ring is sleeved on the pressure-resistant pipe 39.

[0093] In this embodiment, a large pressure-resistant pipe 40 can also be provided at the pipe joint 34, and a sealing ring is sleeved on the large pressure-resistant pipe 40.

[0094] Working principle:

[0095] See Figure 5 , the liquid in the water tank 1 is pumped out by the first water pump 20 of the first pumping water circuit 2 and the second water pump 22 of the second pumping water circuit 3 through a silica gel tube, and then passes through the corresponding S3 valve and the connection valve 28. If the first pressure relief component 4 and / or the second pressure relief component 5 is opened, it can return to the water tank 1 through the corresponding pressure relief component. If the first pressure relief component 4 and / or the second pressure relief component 5 is closed, the liquid will push open the piston 37 of the check valve 7 at the connection valve 28, the piston 37 compresses the spring 36, and finally the liquid flows through the first heating pot water circuit assembly 6 for heating so that the coffee machine can brew coffee.

[0096] When in the coffee brewing state, the liquid in the water tank 1 enters together through the first pumping waterway 2 and the second pumping waterway 3. At this time, the first pressure relief component 4 and / or the second pressure relief component 5 are closed, the solenoid valve is not opened, and the liquid cannot return to the water tank 1 through the first pressure relief component 4 and / or the second pressure relief component 5. Therefore, the liquid needs to push open the one-way valve 7 at the pipe joint 34, and the liquid flows out from the output end of the pipe joint 34, passes through the first heating pot waterway component 6 for heating, and realizes the function of brewing coffee.

[0097] See Figure 6 , in the coffee brewing pressure regulation state of 3 bar (pressure reduction), the water inlet method is the same. The liquid still pushes open the one-way valve 7 at the pipe joint 34 and flows out from the output end of the pipe joint 34. After the pressure reaches a certain level, the first pressure relief component 4 is opened, and the fifth solenoid valve 25 is opened. At this time, a part of the water will flow through the fifth solenoid valve 25 to the water tank 1 to realize the pressure relief function.

[0098] See Figure 7 , in the coffee brewing pressure regulation state of 6 bar (pressure reduction), the water inlet method is the same. The liquid still pushes open the one-way valve 7 at the pipe joint 34 and flows out from the output end of the pipe joint 34. After the pressure reaches a certain level, the second pressure relief component 5 is opened, and the sixth solenoid valve 27 is opened. At this time, a part of the water will flow from the sixth solenoid valve 27 to the water tank 1 to realize the pressure relief function.

[0099] See Figure 8 , in the coffee brewing pressure regulation state of 9 bar, the water inlet method is the same. The liquid still pushes open the one-way valve 7 at the pipe joint 34 and flows out from the output end of the pipe joint 34. After the pressure reaches a certain level, the first pressure relief component 4 and the second pressure relief component 5 are opened simultaneously. At this time, a part of the water will flow from the first pressure relief component 4 and the second pressure relief component 5 to the water tank 1 to realize the pressure relief function.

[0100] See Figure 9 , in the hot water function state, neither the first pressure relief component 4 nor the second pressure relief component 5 is opened. The liquid pushes open the one-way valve 7 at the pipe joint 34 and flows out from the output end of the pipe joint 34, passes through the first heating pot waterway component 6 for heating to form hot water and flows out along the hot water pipe 16.

[0101] See Figure 10 , in the super steam state, neither the first pressure relief component 4 nor the second pressure relief component 5 is opened. The liquid pushes open the one-way valve 7 at the pipe joint 34 and flows out from the output end of the pipe joint 34, passes through the first heating pot waterway component 6 for heating into hot water. At this time, the fourth solenoid valve 15 is closed, the hot water then reaches the second heating pot waterway component 8 for further heating and vaporization into steam, the second solenoid valve 11 is opened, and finally the steam is output from the steam pipe 9.

[0102] The above is the preferred embodiment of the present utility model, which shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A waterway assembly capable of adjusting the waterway pressure of a coffee machine, comprising a water tank (1), characterized in that: It further includes a pumping water circuit mechanism and a pressure relief mechanism. The pumping water circuit mechanism at least includes a first pumping water circuit (2) and a second pumping water circuit (3); The input ends of the first pumping water circuit (2) and the second pumping water circuit (3) are connected to the water tank (1). The output ends of the first pumping water circuit (2) and the second pumping water circuit (3) are connected to the water heating mechanism. The pressure relief ends of the first pumping water circuit (2) and the second pumping water circuit (3) are connected to the pressure relief mechanism; When the first pumping water circuit (2) and the second pumping water circuit (3) operate simultaneously, the pressure relief mechanism is activated to adjust the water pressure in the coffee machine water circuit.

2. The waterway assembly capable of adjusting the water pressure of a coffee machine according to claim 1, characterized in that: The pressure relief mechanism at least includes a first pressure relief component (4) and a second pressure relief component (5). The first pumping water circuit (2) and the second pumping water circuit (3) operate simultaneously. The first pressure relief component (4) or the second pressure relief component (5) is started individually, or the first pressure relief component (4) and the second pressure relief component (5) are started synchronously to achieve a dual pressure regulation structure for the coffee machine water circuit.

3. The waterway assembly capable of adjusting the waterway pressure of the coffee machine according to claim 2, characterized in that: The pressures at which the first pressure relief component (4) and the second pressure relief component (5) relieve pressure are different. The output ends of the first pressure relief component (4) and the second pressure relief component (5) are connected to the water tank (1). When the first pressure relief component (4) and / or the second pressure relief component (5) is started, the liquid output by the first pumping water circuit (2) and the second pumping water circuit (3) returns to the water tank (1).

4. The waterway assembly capable of adjusting the waterway pressure of the coffee machine according to claim 1, characterized in that: The water heating mechanism includes a first heating pot water circuit component (6) provided on the coffee machine. One-way valves (7) for allowing liquid to flow unidirectionally into the first heating pot water circuit component (6) are provided at the output ends of the first pumping water circuit (2) and the second pumping water circuit (3); When the coffee machine is in the standby state, the first pumping water circuit (2), the second pumping water circuit (3), the first pressure relief component (4), the second pressure relief component (5), and the one-way valve (7) are all in the closed state to form a water circuit seal for the coffee machine; When the coffee machine is in the working state, the first pumping water circuit (2) and the second pumping water circuit (3) operate simultaneously. The liquid in the water tank (1) pushes open the one-way valve (7) along the first pumping water circuit (2) and the second pumping water circuit (3) and enters the first heating pot water circuit component (6); The output end and the pressure relief end of the first pumping water circuit (2) are the same end. The output end and the pressure relief end of the second pumping water circuit (3) are the same end.

5. The waterway assembly capable of adjusting the waterway pressure of a coffee machine according to claim 1, wherein: The coffee machine is provided with a second heating pot water circuit component (8) for connecting a steam pipe (9). The input end of the second heating pot water circuit component (8) is connected to the water tank (1) through a water pump (12); The output end of the second heating pot water circuit component (8) is connected to the steam pipe (9); the output end of the first heating pot water circuit component (6) is connected to the second heating pot water circuit component (8); A first solenoid valve (10) is provided between the output end of the second heating pot water circuit component (8) and the steam pipe (9). A second solenoid valve (11) is provided between the output end of the first heating pot water circuit component (6) and the second heating pot water circuit component (8); When the second solenoid valve (11) is in the closed state, the liquid in the water tank (1) flows to the second heating pot water circuit component (8) for primary heating. When the first solenoid valve (10) is in the open state, steam is output from the steam pipe (9); The second solenoid valve (11) is in an open state, and part of the liquid in the water tank (1) flows to the second heating pot water circuit assembly (8), and another part of the liquid in the water tank (1) flows to the first heating pot water circuit assembly (6), is heated and then flows to the second heating pot water circuit assembly (8).

6. The waterway assembly capable of adjusting the waterway pressure of the coffee machine according to claim 5, characterized in that: The first solenoid valve (10) is connected to the pressure relief tank (13).

7. The waterway assembly capable of adjusting the waterway pressure of the coffee machine according to claim 4, characterized in that: A third solenoid valve (14) for connecting to the pressure relief tank (13) is provided at the output end of the first heating pot water circuit assembly (6).

8. The waterway assembly capable of adjusting the waterway pressure of the coffee machine according to claim 4, wherein: A fourth solenoid valve (15) for connecting to the hot water pipe (16) is provided at the output end of the first heating pot water circuit assembly (6).

9. The waterway assembly capable of adjusting the waterway pressure of a coffee machine according to claim 2, characterized in that: A first flowmeter (17) is provided between the input ends of the first pumping water circuit (2) and the second pumping water circuit (3) and the water tank (1) respectively; a second flowmeter (18) is provided between the output ends of the first pressure relief assembly (4) and the second pressure relief assembly (5) and the water tank (1) respectively.

10. The waterway assembly capable of adjusting the water pressure of the coffee machine according to claim 1, characterized in that: The first pumping water circuit (2), the second pumping water circuit (3), the first pressure relief assembly (4) and the second pressure relief assembly (5) are all integrally arranged on the same substrate (19); The first pumping water circuit (2) includes a first water pump (20), and a first S3 valve (21) connected to the first water pump (20) and switching the open state and the closed state of the first pumping water circuit (2); The second pumping water circuit (3) includes a second water pump (22), and a second S3 valve (23) connected to the second water pump (22) and switching the open state and the closed state of the second pumping water circuit (3); The first pressure relief assembly (4) includes a first pressure relief valve (24), and a fifth solenoid valve (25) connected to the first pressure relief valve (24) and switching the open state and the closed state of the first pressure relief assembly (4); The second pressure relief assembly (5) includes a second pressure relief valve (26), and a sixth solenoid valve (27) connected to the second pressure relief valve (26) and switching the open state and the closed state of the second pressure relief assembly (5); A connection valve (28) is provided on the substrate (19), and a first joint (29) for connecting to the first pumping water circuit (2) and a second joint (30) for connecting to the second pumping water circuit (3) are provided on the connection valve (28); The connection valve (28) is further provided with a third joint (31) for connecting to the first pressure relief assembly (4) and a fourth joint (32) for connecting to the second pressure relief assembly (5); The connection valve (28) is further provided with a pipe joint (34) for connecting to the first heating pot water circuit assembly (6); A check valve (7) with an open state and a closed state is provided on the pipe joint (34); The check valve (7) includes a plug (35), a spring (36) and a piston (37); The plug (35) is fixed in the pipe joint (34), one end of the spring (36) elastically acts on the plug (35), and the other end of the spring (36) elastically acts on the piston (37); The check valve (7) is in a closed state, and the spring (36) releases elastic force and makes the piston (37) block the output end of the pipe joint (34); The one-way valve (7) is in an open state, the piston (37) presses the spring (36), and the output end of the pipe joint (34) is opened.

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