Coffee purifying and drinking system and coffee purifying and drinking machine

Abstract

The invention discloses a purified coffee drinking system and a purified coffee drinking machine, the purified coffee drinking system comprises a water inlet waterway, an extraction waterway and a water receiving device, the water inlet waterway comprises a water inlet pipe and a water pump, a buffer noise reduction part and a first pressure relief part which are arranged on the water inlet pipe, and the buffer noise reduction part and the first pressure relief part are located at the downstream of the water pump in the water flow direction of the water inlet pipe; the buffer noise reduction part is used for buffering water flow flowing through the buffer noise reduction part, and the first pressure relief part is used for relieving pressure of a pipeline on the downstream of the water pump; the second pressure relief part and the extraction device are sequentially arranged on the extraction pipe in the water flow direction of the extraction pipe, the extraction pipe communicates with the water inlet pipe, the water pump is used for being matched with the extraction water path to prepare coffee, and the second pressure relief part is used for relieving pressure of the extraction water path; the water receiving device is connected with the first pressure relief piece and the second pressure relief piece and used for collecting fluid generated by pressure relief of the first pressure relief piece or the second pressure relief piece.

Description

Technical Field

[0001] This application relates to the field of coffee machine technology, and in particular to a coffee purification system and a coffee purification machine. Background Technology

[0002] In related technologies, coffee machines typically use a water pump as a power source to achieve the coffee extraction function.

[0003] However, during the extraction process, the continuous operation of the water pump causes the water to flow violently in the pipeline, which generates a lot of noise and seriously affects the user experience. Summary of the Invention

[0004] This application provides a coffee purification system and a coffee purifier, which aims to reduce the noise generated by the water circuit in the coffee purification system and improve the user experience.

[0005] To achieve the above objectives, a first aspect of this application provides a coffee purification system, characterized in that it is applied to a coffee purifier, the coffee purification system comprising:

[0006] The water inlet circuit includes an inlet pipe and a water pump, a buffer noise reduction device, and a first pressure relief device installed on the inlet pipe. Along the water flow direction of the inlet pipe, the buffer noise reduction device and the first pressure relief device are located downstream of the water pump. The buffer noise reduction device buffers the water flow passing through it, and the first pressure relief device relieves pressure on the pipeline downstream of the water pump. An extraction water path includes an extraction tube, a second pressure relief component sequentially arranged along the water flow direction of the extraction tube, and an extraction device. The extraction tube is connected to the water inlet pipe. The water pump is used to cooperate with the extraction water path to prepare coffee. The second pressure relief component is used to relieve pressure in the extraction water path. A water collection device is connected to the first pressure relief component and the second pressure relief component respectively, and is used to collect the fluid generated by the pressure relief of the first pressure relief component or the second pressure relief component.

[0007] In some embodiments, the buffer noise reduction device includes: A buffer noise reduction shell, connected to the water inlet pipe, and having a buffer cavity communicating with the water inlet pipe; and An elastic diaphragm is disposed within the buffer cavity to buffer the liquid flowing through the buffer noise reduction element.

[0008] In some embodiments, the buffer noise reduction element has a buffer flow channel communicating with the water inlet pipe, and the buffer flow channel is arranged in a spiral shape.

[0009] In some embodiments, the buffer noise reduction device includes a first pipe section, a buffer pipe section, and a second pipe section connected sequentially along the water flow direction, wherein the diameter of the buffer pipe section is larger than the diameter of the first pipe section and the second pipe section.

[0010] In some embodiments, the outer surface of the water pump and / or the buffer noise reduction component is provided with an elastic layer.

[0011] In some embodiments, the first pressure relief component includes: The mechanical pressure relief valve has both its outlet and inlet ends connected to the inlet pipe. The mechanical pressure relief valve has a first pressure relief port. When the pipeline pressure between the water pump and the extraction device is greater than the preset pressure, the mechanical pressure relief valve opens the first pressure relief port to release pressure.

[0012] In some embodiments, the first pressure relief component further includes a first pressure relief pipe, which connects the first pressure relief port to the water receiving device; And / or, the preset pressure is not less than 0.9 MPa.

[0013] In some embodiments, the mechanical pressure relief valve is provided with a check structure to prevent water from flowing back from the outlet to the inlet. And / or, the first pressure relief port is also used to discharge air from the water inlet passage when the water pump is pumping water.

[0014] In some embodiments, the second pressure relief component includes: A coffee valve is provided in the extraction tube. The coffee valve has an inlet, an outlet and a second pressure relief port. The inlet is connected to the inlet pipe and the outlet is connected to the extraction device. When the coffee valve is in the open state, the inlet is connected to the outlet but not to the second pressure relief port. When the coffee valve is closed, the second pressure relief port is connected to the water outlet but not to the water inlet, in order to relieve pressure on the extraction device.

[0015] In some embodiments, the coffee purification system further includes: The pressurized instant heating module has an inlet end connected to the water pump via the inlet pipe and an outlet end connected to the extraction pipe. During operation, it is used to heat the water flowing into the pressurized instant heating module instantly, and the water pressure that the pressurized instant heating module can withstand is not less than the water pressure when the extraction water circuit extracts coffee.

[0016] In some embodiments, the pressurized instant heating module includes a thick film heating tube, which can withstand a water pressure of not less than 0.9 MPa.

[0017] In some of these embodiments, The pressurized instant heating module includes: An inlet water temperature sensor is installed at the inlet end of the pressurized instant heating module; and, A water temperature sensor is installed at the water outlet of the pressurized instant heating module.

[0018] In some embodiments, the coffee valve can withstand a water pressure of not less than 2.0 MPa; And / or, the coffee valve can withstand a water temperature of not less than 100°C.

[0019] In some embodiments, the second pressure relief component further includes: The second pressure relief pipe connects to the second pressure relief port and the water receiving device.

[0020] In some embodiments, the second pressure relief pipe is a heat-resistant flexible hose; And / or, the water temperature that the second pressure relief pipe can withstand is not more than 100°C.

[0021] In some embodiments, the coffee purification system further includes: The water outlet path is connected to the pressurized instant heating module, and either the water outlet path or the extraction water path is connected to the pressurized instant heating module.

[0022] In some embodiments, the water inlet pipe includes a first water inlet pipe and a second water inlet pipe, both of which are connected to the pressurized instant heating module; The water pump includes a water supply pump installed on the first water inlet pipe and an extraction water pump installed on the second water inlet pipe. The water pressure of the extraction water pump is greater than that of the water supply pump. The water supply pump outputs water through the pressurized instant heating module and the water outlet circuit, and the extraction water pump prepares coffee through the pressurized instant heating module and the extraction water circuit. The extraction water pump, the buffer noise reduction component, and the first pressure relief component are sequentially arranged in the second water inlet pipe along the water flow direction of the second water inlet pipe.

[0023] In some embodiments, the water inlet path further includes: A check valve is installed between the water supply pump and the pressurized instant heating module.

[0024] In some embodiments, the check valve includes one of a mechanical check valve and a solenoid valve.

[0025] In some embodiments, the coffee purification system further includes: The flow meter is installed on the second inlet pipe; or, it is installed on the common section of the first inlet pipe and the second inlet pipe.

[0026] In some embodiments, the water outlet path includes a water outlet pipe connected to the pressurized instant heating module, and a water outlet valve disposed on the water outlet pipe; The coffee valve and the extraction device are sequentially arranged in the extraction tube along the water flow direction; In this configuration, the water outlet valve and the coffee valve are selectively connected. The water supply pump, through the pressurized instant heating module, cooperates with the connected water outlet valve to supply water. The extraction water pump, through the pressurized instant heating module, cooperates with the connected coffee valve and the extraction device to prepare coffee.

[0027] In some embodiments, the coffee purification system further includes: Pure water system; and The pure water tank has its inlet end connected to the pure water production circuit and its outlet end connected to the inlet end of the inlet pipe. Alternatively, the coffee purification system may further include a pure water supply path, and the water receiving device has an inlet end, an outlet end and a receiving end. The inlet end of the water receiving device is connected to the pure water supply path, the outlet end of the water receiving device is connected to the inlet end of the inlet pipe, and the receiving end of the water receiving device is connected to the first pressure relief component and the second pressure relief component respectively.

[0028] In some embodiments, the pure water tank includes: A low water level detection device, installed on the pure water tank, is used to detect the lowest water level in the pure water tank; and, A high water level detection device is installed on the pure water tank to detect the highest water level in the pure water tank.

[0029] A second aspect of this application provides a coffee purifier, comprising: The housing has a mounting cavity; and, The coffee purification system described in the above embodiments is installed inside the mounting cavity.

[0030] In the coffee purification system provided in this application embodiment, a buffer noise reduction device is installed on the water inlet pipe of the water inlet circuit. Along the water flow direction of the water inlet pipe, the buffer noise reduction device is located downstream of the water pump and is used to buffer the water flow passing through the buffer noise reduction device, thereby reducing the noise generated by the water circuit system and improving the user experience.

[0031] The first pressure relief component is located downstream of the water pump along the water flow direction. When the pressure in the pipeline downstream of the water pump reaches the preset pressure, the water circuit downstream of the water pump automatically releases pressure through the first pressure relief component, thereby maintaining the pressure in the pipeline downstream of the water pump below the preset pressure. This prevents the pipeline downstream of the water pump from rupturing due to excessive pressure, protects the pipeline downstream of the water pump, improves the safety and stability of the water system, extends the service life of the coffee purifier, and reduces safety hazards during user operation.

[0032] After extraction, re-extraction requires disassembling the capsule holder or portafilter handle. However, during extraction, the extraction nozzle may become clogged, leading to high internal pressure and making disassembly difficult. This application addresses this by incorporating a second pressure relief device at the water inlet of the extraction device. After extraction, this device opens the internal flow, reducing internal pressure and facilitating maintenance and cleaning. It also protects the device from damage due to excessive pressure, improving the convenience and reliability of the coffee purifier.

[0033] In addition, the water collection device is connected to the first and second pressure relief components respectively, and is used to collect the fluid (such as water, gas, etc.) generated by the pressure relief of the first or second pressure relief component. When the first or second pressure relief component is opened to relieve pressure, the fluid flows into the water collection device, preventing water from being directly discharged into the coffee machine or to the outside, thereby keeping the coffee machine clean. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the water circuit of the coffee purification system provided in the first embodiment of this application; Figure 2 This is a schematic diagram of the water circuit of the coffee purification system provided in the second embodiment of this application; Figure 3 This is a flowchart illustrating a drinking water instruction in one embodiment of this application; Figure 4 This is a flowchart illustrating the extraction instructions in one embodiment of this application; Figure 5 This is a flowchart illustrating a drinking water instruction at room temperature in one embodiment of this application. Figure 6This is a flowchart illustrating a drinking water instruction as a hot water instruction in one embodiment of this application; Figure 7 This is a flowchart illustrating a drinking water instruction as a boiling water instruction in one embodiment of this application. Figure 8 This is one of the flowcharts of a coffee purifier according to one embodiment of this application; Figure 9 This is a flowchart illustrating an embodiment of the present application where the extraction command is a room temperature extraction command. Figure 10 This is a flowchart illustrating a hot extraction command in one embodiment of this application. Figure 11 This is a second schematic diagram of the process of a coffee purifier in one embodiment of this application; Figure 12 This is a flowchart illustrating a cleaning instruction in one embodiment of this application; Figure 13 This is a flowchart illustrating the descaling instructions in one embodiment of this application.

[0036] Explanation of icon numbers: 1. Water inlet circuit; 11. Water inlet pipe; 111. First water inlet pipe; 112. Second water inlet pipe; 12. Water pump; 121. Water supply pump; 122. Extraction water pump; 13. First pressure relief component; 131. Mechanical pressure relief valve; 132. First pressure relief pipe; 14. Check valve; 15. Flow meter; 16. Buffer and noise reduction component; 2. Extraction water circuit; 21. Extraction pipe; 22. Second pressure relief component; 221. Coffee valve; 222. Second pressure relief pipe; 23. Extraction device; 24. Extraction nozzle; 3. Pure water tank; 31. Low water level detection component; 32. High water level detection component; 4. Water receiving device; 5. Pressurized instant heating module; 6. Water outlet circuit; 61. Water outlet pipe; 62. Water outlet valve; 63. Water outlet nozzle.

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0039] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0043] Please see Figure 1 This application provides a coffee purifier that can reduce the risk of coffee machine pipe rupture and improve the safety of coffee machine use.

[0044] Specifically, the coffee purifier in this embodiment includes a housing and a coffee purification system installed inside the housing.

[0045] The outer casing, serving as the external structure of the coffee purifier, is used to install and protect the internal coffee purification system. For example, the casing has an internal mounting cavity that provides space for the coffee purification system and other internal components. The casing can be manufactured using injection molding, employing engineering plastics such as ABS and PC, resulting in a lightweight and low-cost structure. Alternatively, the casing can be made of metal (such as stainless steel or aluminum alloy), manufactured through processes like stamping and welding. Metal casings offer a more robust structure, enhancing the product's durability and stability.

[0046] The coffee purification system is the core of the coffee purifier, which includes water inlet path 1 and extraction path 2.

[0047] The water inlet circuit 1 includes an inlet pipe 11, a water pump 12 arranged sequentially on the inlet pipe 11 along the water flow direction, and a first pressure relief component 13.

[0048] The inlet pipe 11 serves as a channel guiding water flow into the inlet water path 1 and the extraction water path 2, used to deliver water source or filtered and purified water (mentioned below) to subsequent components. In this embodiment, the inlet pipe 11 can be a silicone tube to adapt to different installation environments and facilitate pipe bending and layout; the inlet pipe 11 can also be a PPR (polypropylene random) pipe, which has various connection methods (such as heat fusion connection) and good sealing performance to prevent water leakage.

[0049] Furthermore, since the inlet pipe 11 connected to the outlet of the water pump 12 needs to be pressurized, the inlet pipe 11 after the outlet of the water pump 12 can be made of Teflon pipe, PE pipe, etc., which can withstand high pressure. However, the inlet pipe 11 before the inlet of the water pump 12 has lower pressure or does not need to be pressurized. In this case, the inlet pipe 11 before the inlet of the water pump 12 can be made of silicone pipe or plastic pipe with lower strength.

[0050] The water pump 12 serves as the power source for the water inlet channel 1, propelling the water flow within the channel. In this embodiment, the water pump 12 can be an electromagnetic pump, a plunger pump, or a positive displacement pump (AC or DC). All of these different types of water pumps 12 can provide sufficient power to the water inlet channel 1, enabling the water to enter the extraction channel 2 and complete the coffee preparation.

[0051] Because the water pump 12 usually needs to provide high pressure during the coffee preparation process, the pipes in the water circuit, especially the pipes downstream of the water pump 12, may be at risk of rupture.

[0052] Therefore, in this embodiment, the first pressure relief component 13 is set downstream of the water pump 12 along the water flow direction. When the pressure of the water inlet channel 1 reaches the preset pressure, the water inlet channel 1 automatically releases pressure through the first pressure relief component 13, thereby maintaining the pressure of the pipeline downstream of the water pump 12 in the water channel below the preset pressure, thereby preventing the pipeline downstream of the water pump 12 from rupturing due to excessive pressure, and protecting the pipeline in the water inlet channel 1 and the extraction water channel 2 (extraction pipe 21, extraction device 23, etc.) located downstream of the water pump 12.

[0053] The first pressure relief component 13 may include a mechanical pressure relief valve 131 or an electric pressure relief valve. The mechanical pressure relief valve 131 typically consists of a valve core, spring, adjusting screw, and other components. When the water pressure exceeds the pressure value set by the spring, the valve core is pushed open, discharging excess water and thus reducing the water pressure. The mechanical pressure relief valve 131 has a simple structure, low cost, and high reliability. The electric pressure relief valve, on the other hand, monitors the pressure through an electronic control system. When the pressure reaches a preset value, it controls a motor to drive the valve core to open and release pressure. The electric pressure relief valve features fast response and precise control, enabling more flexible pressure regulation and management. The first pressure relief component 13 in this embodiment can prevent pipe rupture in the inlet water path 1 and the extraction water path 2 (extraction pipe 21, extraction device 23, etc.) downstream of the water pump 12 due to excessive pressure, greatly improving the safety and stability of the water system, extending the service life of the coffee purifier, and reducing safety hazards for users.

[0054] The extraction water path 2 in this embodiment includes an extraction pipe 21, a second pressure relief component 22 arranged sequentially along the water flow direction of the extraction pipe 21, and an extraction device 23.

[0055] The extraction tube 21 is a channel connecting the water inlet pipe 11 and the extraction device 23. It is used to transport the pressurized water from the water inlet pipe 1 to the extraction device 23 to extract coffee. The extraction tube 21 can be made of high-pressure resistant Teflon tubing or PE tubing, etc.

[0056] The extraction device 23 in this embodiment is the core component of the coffee purifier for coffee extraction. The extraction device 23 can be a capsule extraction device 23 or a powder extraction device 23. The capsule extraction device 23 uses a piercing needle to puncture the coffee capsule and allows high-pressure water to pass through the coffee powder layer to extract the coffee liquid; while the powder extraction device 23 puts coffee powder into the portafilter and is installed on the extraction device 23 through a handle or other structural support, and high-pressure water flows through the coffee powder layer to extract the coffee.

[0057] After extraction is complete, re-extraction requires disassembling the capsule holder, powder bowl handle, or powder holder. However, during the extraction process, the extraction nozzle 24 of the extraction device 23 may become clogged, resulting in high internal pressure and making disassembly difficult.

[0058] This embodiment addresses the aforementioned problem by incorporating a second pressure relief component 22 at the water inlet of the extraction device 23. Specifically, the second pressure relief component 22 is installed on the extraction pipe 21 to relieve pressure in the extraction water path 2, particularly in the pipeline between the second pressure relief component 22 and the extraction device 23, as well as inside the extraction device 23. When the extraction nozzle 24 of the extraction device 23 becomes clogged, the internal pressure of the extraction device 23 will rapidly increase. If pressure is not relieved in time, it will be difficult for the user to disassemble the capsule holder, powder bowl handle, or powder holder, and may even damage the extraction device 23. This embodiment relieves pressure using the second pressure relief component 22. Exemplarily, the second pressure relief component 22 includes an electrically operated three-way valve. One of the ports of this three-way valve is a pressure relief port. When extraction is complete, the pressure relief port is connected to the inside of the extraction device 23, thereby opening the pressure relief channel and reducing the internal pressure of the extraction device 23. The second pressure relief component 22 provided in this embodiment not only facilitates the maintenance and cleaning of the extraction device 23 by the user, but also protects the extraction device 23 from damage caused by excessive pressure, thereby improving the convenience and reliability of the coffee purifier.

[0059] The coffee purification system in this embodiment also includes a water receiving device 4, which is connected to the first pressure relief component 13 and the second pressure relief component 22, and is used to collect the fluid (such as water flow, gas, etc.) generated by the pressure relief of the first pressure relief component 13 or the second pressure relief component 22. The water receiving device 4 can be an independent water storage box, a water receiving tray, or a pure water tank or raw water tank integrated into the machine body.

[0060] When the first pressure relief component 13 or the second pressure relief component 22 is activated, the fluid flows into the water collection device 4, preventing water from being directly discharged into or outside the coffee machine, thus keeping the coffee machine clean. In this embodiment, the water collection device 4 centrally collects the pressure relief fluid, preventing water leakage or contamination inside the coffee machine and improving user maintenance convenience.

[0061] During the coffee extraction process, the water pump 12 may generate significant noise due to its high pumping pressure. To reduce the noise generated by the water system and improve the user experience, this application also includes a noise reduction buffer 16.

[0062] Specifically, the water inlet channel 1 also includes a buffer noise reduction component 16 installed on the water inlet pipe 11. Along the water flow direction of the water inlet pipe 11, the buffer noise reduction component 16 is located downstream of the water pump 12. The buffer noise reduction component 16 is used to buffer the water flow passing through the buffer noise reduction component 16.

[0063] In the first configuration, the buffer noise reduction device 16 includes a buffer noise reduction shell and an elastic diaphragm. The buffer noise reduction shell is connected to the water inlet pipe 11 and has a buffer cavity communicating with the water inlet pipe 11. The elastic diaphragm is disposed in the buffer cavity to buffer the liquid flowing through the buffer noise reduction device 16.

[0064] The elastic diaphragm can be a silicone sheet or a rubber sheet. It buffers water flow by absorbing energy through elastic deformation. When the water pressure changes abruptly (such as the water hammer effect caused by the start and stop of pump 12), the elastic diaphragm deforms under the pressure difference, converting kinetic energy into elastic potential energy stored inside the diaphragm. As the diaphragm returns to its original shape, it releases the energy back into the water flow, causing the water pressure to stabilize.

[0065] In the second configuration, the buffer noise reduction component 16 has a buffer flow channel connected to the water inlet pipe 11, and the buffer flow channel is arranged in a spiral shape.

[0066] The spiral-shaped buffer channel reduces noise by extending the water flow path and altering the flow pattern. When water enters the spiral channel, it flows along the spiral, and this spiral flow pattern increases fluid damping, thereby reducing turbulence. Simultaneously, the centrifugal force of the spiral channel concentrates air bubbles at the center of the channel, preventing them from bursting near the channel walls and generating noise.

[0067] In the third configuration, the buffer noise reduction component 16 includes a first pipe section, a buffer pipe section, and a second pipe section connected sequentially along the water flow direction, wherein the diameter of the buffer pipe section is larger than the diameter of the first pipe section and the second pipe section.

[0068] This embodiment designs a buffer pipe section with varying diameter based on Bernoulli's principle. The sudden change in pipe diameter within the buffer section balances and regulates flow velocity and pressure. When water flows from the first pipe section into the larger-diameter buffer section, the flow velocity decreases, mitigating pressure fluctuations. Subsequently, as the water flows into the smaller-diameter second pipe section, the flow velocity recovers and the pressure stabilizes, thus achieving buffering and noise reduction of the water flow.

[0069] In the fourth configuration, the outer surface of the water pump 12 and / or the buffer noise reduction component 16 is provided with an elastic layer.

[0070] The elastic layer can be a damping sheet, which reduces noise propagation through damping and vibration reduction. When the water pump 12 or the buffer noise reduction component 16 vibrates, the damping sheet (such as a rubber damping sheet) can convert the energy of the vibration into heat energy for dissipation. The elastic layer can also include a porous structure, which reduces noise propagation by absorbing sound waves. The porous structure of the elastic layer causes sound waves to be reflected and scattered multiple times within the elastic layer, thereby absorbing the energy of the sound waves.

[0071] In some embodiments, the buffer noise reduction element 16 is located between the water pump 12 and the first pressure relief element 13 in the water inlet channel 1.

[0072] The noise reduction buffer 16 works in conjunction with the first pressure relief component 13 to form a modular structure for noise suppression and pressure control. When the high-pressure water flow output by the water pump 12 enters the noise reduction buffer 16, the pressure fluctuations of the water flow are first buffered by the noise reduction buffer 16, and then the water flows through the first pressure relief component 13 for pressure regulation. In this way, frequent impacts of pressure changes on the first pressure relief component 13 are effectively avoided, extending the service life of the first pressure relief component 13.

[0073] Regarding the connection method, the connection between the buffer noise reduction component 16 and the water pump 12 and the first pressure relief component 13 (mechanical pressure relief valve 131) can be selected according to the interface form, such as internal and external thread connection, Teflon pressure-resistant pipe assembly and snap ring and sealing ring combination connection. The connection between the buffer noise reduction component 16 and the first pressure relief component 13 can also adopt a quick-connect structure to achieve quick disassembly and facilitate maintenance.

[0074] In some embodiments, the first pressure relief component 13 includes a mechanical pressure relief valve 131, the inlet and outlet of which are both connected to the inlet pipe 11, and has a first pressure relief port. When the pipeline pressure between the water pump 12 and the extraction device 23 is greater than a preset pressure, the mechanical pressure relief valve 131 opens the first pressure relief port to relieve pressure.

[0075] The mechanical pressure relief valve 131 has an internal elastic element (such as a spring) and a valve core assembly. When the pressure in the inlet water passage 1 exceeds the threshold set by the spring preload, the valve core is pushed open, the first pressure relief port opens, and excess water is discharged through the first pressure relief port. In this embodiment, the pressure relief valve adopts a purely mechanical structure, requires no external energy drive, and responds automatically based on pressure difference, resulting in low cost and simple maintenance.

[0076] In some embodiments, the preset pressure is not less than 0.9 MPa. For example, the preset pressure is set between 1.2 and 2.0 MPa. During coffee extraction, a brewing pressure of approximately 0.9 to 1.2 MPa is typically required to dissolve the active ingredients in the coffee powder and achieve optimal extraction results. At this pressure, the pipeline downstream of the water pump 12 must withstand pressure surges from the water pump 12. If the preset pressure is too low (e.g., below 0.9 MPa), the first pressure relief component 13 will open frequently, affecting coffee preparation efficiency. Setting the preset pressure between 1.2 and 2.0 MPa ensures stable operation of the water system under normal working pressure and allows for timely pressure relief in abnormal situations (e.g., pipeline blockage). For example, when the preset pressure is 2.0 MPa, if the extraction nozzle 24 of the extraction device 23 is blocked by coffee grounds, the pressure in the inlet water path 1 may rapidly rise above 2.0 MPa. In this case, the mechanical pressure relief valve 131 automatically opens, releasing the pressure below 2.0 MPa, thereby protecting the pipeline from high-pressure damage.

[0077] In some embodiments, the mechanical pressure relief valve 131 is provided with a check structure. Exemplarily, the check structure is implemented by a built-in one-way valve plate, which only allows water to flow from the inlet to the outlet, and automatically closes when the pressure at the outlet is higher than that at the inlet to prevent backflow. In particular, when a coffee machine is making hot coffee, after the hot brewing is finished, it can prevent the hot water in the pressurized instant heating module 5 (mentioned below) from flowing back and causing the pump 12 to fail due to heat, thereby extending the service life of the pump 12.

[0078] In some embodiments, the first pressure relief port also has an air venting function during the initial startup of the water pump 12. When the water inlet 1 is filled with water for the first time or restarted after a long period of shutdown, or when the pure water tank 3 is abnormally short of water causing the water pump 12 to run dry, air may accumulate in the pipes, causing the water pump 12 to fail to pump water or have insufficient flow. At this time, the air carried by the water flow is discharged through the first pressure relief port until the pipes are filled with liquid. In this way, the startup time of the water pump 12 is shortened, allowing the coffee machine to enter the working state more quickly. The mechanical pressure relief valve 131 of this embodiment can integrate the check valve and the air venting function into the same pressure relief valve, which simplifies the water system structure and achieves multiple safety guarantees and performance optimization.

[0079] In some embodiments, the coffee purification system further includes a pure water tank 3. The pure water tank 3 is a pure water storage component of the coffee purification system, directly connected to the water inlet of the water inlet channel 1, supplying water to the water inlet pipe 11 to ensure the water supply needs of the coffee preparation process. In this embodiment, pure water is used to prepare the coffee, improving the taste and purity of the coffee.

[0080] In some embodiments, the coffee purification system further includes a pure water production line, the outlet of which is connected to the pure water tank 3 to provide pure water to the pure water tank 3.

[0081] For example, the pure water production circuit includes a filtration assembly with multi-stage filtration capabilities. For instance, the first-stage filtration assembly may use a composite filter element, which could include PP cotton, activated carbon, or PAC (polypropylene cotton + carbon fiber + non-woven fabric composite pre-filter) elements. The second-stage filtration assembly may use an RO (reverse osmosis) filter element, and the third-stage filtration assembly may use an activated carbon or mineral filter element. As a pre-filtration stage, the first-stage filtration assembly helps to aggregate suspended particles, colloids, and other impurities in tap water into larger flocs, facilitating their removal by subsequent filtration. The first-stage filtration assembly effectively intercepts large particles such as sediment and rust in the water, reducing the burden on subsequent RO filtration and extending the lifespan of the RO membrane.

[0082] The second-stage filtration component, RO filtration, is the core of the entire filtration process. The RO reverse osmosis membrane has extremely small pores, allowing only water molecules to pass through under pressure while trapping most impurities such as bacteria, viruses, and heavy metal ions, resulting in highly pure water. Through the synergistic effect of these two filtration stages, the water flowing from the outlet of the purified water system to the purified water tank 3 achieves a very high purity, meeting users' requirements for healthy, high-quality drinking water, as well as the water quality requirements for coffee extraction, further enhancing the coffee's flavor. It also reduces the risk of scaling in the downstream drinking water pipeline (the pipeline after purified water tank 3), extending the product's lifespan.

[0083] The activated carbon filter in the third-stage filtration unit is used to further absorb odors and improve the taste of the water; at the same time, the mineral filter can improve the balance and body of coffee extraction.

[0084] Of course, in other embodiments, the filtering component may include only the first-stage filtering component and the second-stage filtering component.

[0085] In some embodiments, the water receiving device 4 of the coffee purification system replaces the pure water tank 3 as the water storage container for the pure water production circuit. The water receiving device 4 has an inlet end, an outlet end, and a receiving end. The inlet end of the water receiving device 4 is connected to the pure water production circuit, and the outlet end of the water receiving device 4 is connected to the inlet end of the inlet pipe 11. The receiving end of the water receiving device 4 is connected to the first pressure relief component 13 and the second pressure relief component 22 respectively. The water after being depressurized by the first pressure relief component 13 and the second pressure relief component 22 flows back to the water receiving device 4, realizing the reuse of water resources and saving water resources.

[0086] In some embodiments, the pure water tank 3 may also include a cold water tank for storing cold water. That is, the cold water tank has a refrigeration component inside. When pure water enters the cold water tank, the refrigeration component turns the pure water into cold water. Thus, the coffee purification system in this embodiment also has the function of providing cold water and preparing cold coffee.

[0087] In other embodiments, the pure water tank 3 is a cold water tank with a refrigeration system. In this case, when preparing cold coffee, the cold water in the tank is directly pumped to the extraction device 23 by the water pump 12 to prepare cold coffee using cold water. When preparing hot coffee, since the cold water tank only provides cold water, the water pump 12 pumps the cold water to the pressurized instant heating module 5. The pressurized instant heating module 5 needs to heat the incoming cold water. At this time, the heating power of the pressurized instant heating module 5 needs to be high to quickly meet the hot water temperature required for preparing hot coffee.

[0088] It should be noted that, in this embodiment, the water required for cold extraction, hot extraction, or room temperature extraction all needs to flow through the pressurized instant heating module 5. However, during cold extraction and room temperature extraction, the pressurized instant heating module 5 is turned off. At this time, the temperature of the cold water flowing into the pressurized instant heating module 5 is 0°C to 15°C, so as to simultaneously meet the extraction temperature required for cold extraction and room temperature extraction. However, during hot extraction, it is necessary to control the pressurized instant heating module to be powered on to heat the water flowing into the pressurized instant heating module 5.

[0089] Since the coffee purification system has a cold brew function, in some embodiments, because the system integrates cold brew, hot brew, and hot water dispensing functions, residual water will remain in the pipeline after hot brewing or hot water dispensing. If the system continues to execute the cold brew mode, the temperature of the cold water will not meet the required temperature for cold brewing, thus affecting the extraction quality. Therefore, in this embodiment, before the system executes the cold brew mode, the system controls the pre-cooling of the pipeline to lower the temperature of the residual water in the pipeline. Furthermore, during the cold brew mode, the pressurized instant heating module 5 is heated for a period of time before the cold brew extraction, and is not heated for a period of time after the cold brew extraction. The period of time before extraction must be less than or equal to 30 seconds, and the period of time after extraction must be less than 40 minutes and 30 seconds. In this way, the total cold brew time does not exceed 5 minutes, and the pressurized instant heating module 5 is not heated for a period of time after the cold brew extraction to ensure the required cold water temperature for cold brewing.

[0090] In some embodiments, the coffee purification system further includes a low water level detection element 31 and a high water level detection element 32, wherein the low water level detection element 31 and the high water level detection element 32 may be a water level sensing needle or a mechanical float.

[0091] The low water level detector 31 and the high water level detector 32 work together on the pure water tank 3 to detect the water level in the tank. For example, the low water level detector 31 is installed near the bottom of the pure water tank 3. When the water level drops to this position, it triggers the control system to cut off the power to the water pump 12 to prevent dry burning damage. For instance, during continuous coffee brewing, when the water level in the pure water tank 3 drops to a low level, the low water level detector 31 sends a signal, and the control system automatically stops working and prompts the user to add water or automatically adds water to the pure water tank 3 through the pure water purification circuit. The high water level detector 32 is located near the top of the pure water tank 3. When the water level reaches this position, it controls the shut-off of the pure water purification circuit, stopping water production and adding water to the pure water tank 3. Therefore, the above dual water level detection mechanism not only ensures the safety of the coffee machine's operation but also avoids water waste by detecting the water level, improving the reliability of the coffee purifier and the user experience.

[0092] In some embodiments, coffee extraction typically requires not only high water pressure but also high water temperature. For example, the extraction temperature for espresso is usually 88-96°C. Therefore, the coffee purification system of this application also includes a pressurized instant heating module 5 for instantly heating the water flowing into the pressurized instant heating module 5.

[0093] In the coffee purification system of this embodiment, the water inlet of the pressurized instant heating module 5 is connected to the water pump 12 via the water inlet pipe 11, and the water pump 12 pumps water into the pressurized instant heating module 5; the water outlet of the pressurized instant heating module 5 is connected to the extraction pipe 21 to supply hot water to the extraction device 23. The pressurized instant heating module 5 of this embodiment adopts instant heating technology, which can heat the water to the preset temperature during the rapid flow of water, avoiding the problem of water quality degradation caused by repeated heating in traditional water storage heating.

[0094] The pressurized instant heating module 5 in this embodiment also has pressure-bearing capacity, and the water pressure it can withstand is no less than the water pressure when extracting coffee in the extraction water channel 2. Normally, the water pressure is high during coffee extraction, and the pressurized instant heating module 5 can still operate stably under high pressure, ensuring that the heating function is not affected and preventing leaks, bursts, or other problems. At the same time, the pressurized instant heating module 5 also has a heat resistance of no less than 100℃, ensuring the reliability and safety of the pressurized instant heating module 5 in high-temperature operating environments.

[0095] In some embodiments, the pressurized instant heating module 5 includes a thick-film heating tube, which is the heating element of the pressurized instant heating module 5. The thick-film heating tube can withstand a water pressure of not less than 0.9 MPa, thus enabling it to withstand the pressure generated during the operation of the coffee purification system. Even under the water hammer pressure impact at the moment the water pump 12 starts, it can maintain stable operation. The optimal extraction pressure for espresso is 0.9 MPa to 1.2 MPa, so setting the thick-film heating tube to withstand a water pressure of not less than 0.9 MPa can protect the pipeline.

[0096] In this embodiment, the thick-film heating element can quickly convert electrical energy into heat energy, enabling instant heating of the water flow. Furthermore, the thick-film heating element possesses excellent corrosion and oxidation resistance, thereby extending the service life of the pressurized instant heating module 5 and ensuring the long-term stable operation of the coffee purification system.

[0097] Furthermore, the thick film heating tube may include a tube surface temperature sensor, which is used for dry burning protection, monitoring the uniformity of the thermal field, and aging assessment of the heating tube. The tube surface temperature sensor is attached to the surface of the outer layer of the thick film resistor, and when the tube surface temperature sensor is attached to the surface of the outer layer of the thick film resistor, thermally conductive silicone grease needs to be used to fill the surfaces of the tube surface temperature sensor and the outer layer of the thick film resistor.

[0098] The thick film heating element also includes a manual reset thermostat. When the temperature of the thick film heating element is high, the manual reset thermostat is disconnected and can only be reset manually, thus making the use of the thick film heating element safer.

[0099] In some embodiments, the pressurized instant heating module 5 further includes an inlet water temperature sensor and an outlet water temperature sensor. The inlet water temperature sensor is located at the water inlet of the module and can monitor the initial temperature of the water flowing into the pressurized instant heating module 5 in real time, collecting data for adjusting the heating power of the pressurized instant heating module 5. For example, when the inlet water temperature is detected to be below the preset temperature, the system automatically increases the heating power to ensure that the outlet water temperature meets the requirements. The outlet water temperature sensor is located at the water outlet of the module and is used to provide real-time feedback on the water temperature after heating. By comparing it with the preset temperature value, the water temperature is precisely controlled within the preset range, ensuring the stability of the water temperature during coffee extraction and thus improving coffee quality.

[0100] In other embodiments, the inlet water temperature sensor can be located on the pipeline between the inlet water pipe 11 and the inlet end of the pressurized instant heating module 5, or on the outlet water temperature sensor outlet water path 6 and extraction water path 2.

[0101] When local temperatures become too high, the pipe surface temperature sensor can detect the abnormality in time, thereby cutting off the heating power supply to prevent dangerous situations such as dry burning. This further improves the safety and reliability of the pressurized instant heating module 5 and ensures the stable operation of the coffee purification system.

[0102] In some embodiments, the first pressure relief component 13 further includes a first pressure relief pipe 132, which connects the first pressure relief port and the water receiving device 4. Exemplarily, one end of the first pressure relief pipe 132 is sealed to the first pressure relief port of the first pressure relief component 13, and the other end is directly connected to the water receiving device 4, thereby forming a fluid pressure relief channel. When the pressure in the water inlet 1 exceeds a preset pressure, high-pressure water can flow into the water receiving device 4 through the first pressure relief pipe 132, preventing damage to the water circuit from the high-pressure water flow.

[0103] In some embodiments, the first pressure relief pipe 132 is a heat-resistant hose. Exemplarily, the first pressure relief pipe 132 can withstand water temperatures of not less than 60°C. The heat-resistant hose can be made of materials such as silicone or rubber, which can maintain good flexibility and physical stability in high-temperature environments. In this embodiment, the first pressure relief pipe 132 is made of a heat-resistant hose with a temperature resistance of not less than 60°C, which can avoid problems such as pipe deformation, aging, or sealing failure caused by high temperatures. Furthermore, the flexibility of the hose makes it easy to install and arrange in the confined space inside the coffee machine, improving the compactness and reliability of the coffee purification system.

[0104] In some embodiments, the second pressure relief component 22 includes a coffee valve 221, which may be an electric three-way valve. The coffee valve 221 has three interfaces: an inlet, an outlet, and a second pressure relief port. The inlet is connected to the inlet pipe 11 and is used to receive water that has been pressurized by the water pump 12 and heated by the pressurized instant heating module 5. The outlet is connected to the extraction device 23 and delivers hot water to the extraction device 23.

[0105] The coffee valve 221 has two operating states: When it is open, the internal valve core connects the inlet and outlet, allowing water to flow from the inlet to the outlet, providing hot water to the extraction device 23. The second pressure relief port is closed, not connected to other interfaces, ensuring normal water supply. When the coffee valve 221 is closed, the valve core position changes, connecting the second pressure relief port to the outlet. This isolates the inlet from other interfaces, allowing residual high-pressure water in the extraction device 23 to be discharged through the outlet and the second pressure relief port, thus relieving pressure on the extraction device 23. This avoids operational difficulties caused by excessive internal pressure in the extraction device 23 when the extraction nozzle 24 is clogged or requires disassembly and maintenance.

[0106] Regarding the connection method, the second pressure relief port of the coffee valve 221 can be connected to the water receiving device 4 in multiple ways. For example, a flexible hose can be used, which has good flexibility, is easy to arrange inside the coffee machine, and can effectively buffer the impact of water flow; a rigid pipe can also be used, which has better stability and durability; in addition, the coffee valve 221 can be connected to the plastic + rubber combination structure on the product body. This connection method does not require additional fittings, simplifies the structure, and the rubber part can provide good sealing to prevent water leakage during pressure relief.

[0107] In some embodiments, the second pressure relief port of the coffee valve 221 drains water to a water tray or a removable and washable part inside the extraction device 23 (such as being connected to the capsule holder or powder holder water collection tank), and can be disassembled and cleaned simultaneously with the capsule holder / powder holder.

[0108] In some embodiments, a mechanical pressure-regulating and pressure-relief valve is provided at the front end of the coffee valve 221 or between the coffee valve 221 and the extraction device 23. This stabilizes the extraction pressure, ensuring a real-time extraction pressure ≤1.2 MPa, and protects the extraction device 23 from leakage due to seal failure under pressure >1.2 MPa. The pressure relief valve's outlet can be connected to a water collection tray or to a removable and washable part inside the extraction device 23 (draining water into the capsule holder or powder tray water collection tank), allowing for simultaneous disassembly and cleaning with the capsule holder / powder tray.

[0109] In some embodiments, the second pressure relief component 22 further includes a second pressure relief pipe 222.

[0110] In the coffee purification system of this embodiment, the water receiving device 4 and the second pressure relief pipe 222 constitute a pressure relief and recovery module. The water receiving device 4 is used to collect the water discharged from the second pressure relief component 22. The second pressure relief pipe 222 connects the second pressure relief port of the coffee valve 221 and the water receiving device 4, and is used to guide the pressure relief water flow to the water receiving device 4.

[0111] In this embodiment, whether it is the pressure relief after the extraction nozzle 24 of the extraction device 23 is blocked, or the normal pressure relief after daily coffee extraction, the second pressure relief component 22 can ensure that the water flow is smooth and orderly during the pressure relief, avoid water splashing everywhere, keep the inside of the coffee machine clean, and also improve the safety of user operation.

[0112] In some embodiments, the coffee valve 221 needs to withstand high pressure and high temperature environments in the coffee purification system. To improve the reliability and service life of the coffee valve 221, in terms of pressure resistance, the coffee valve 221 can withstand a water pressure of not less than 2.0 MPa, ensuring that the coffee valve 221 can avoid structural damage and maintain its sealing performance under normal operating pressure of the extraction water circuit 2 and under possible pressure fluctuations. For example, when the water pump 12 starts up and the pressure rises due to a brief blockage of the extraction device 23, the coffee valve 221 can withstand high pressure impacts to prevent problems such as rupture and leakage, thereby ensuring the safe operation of the entire extraction water circuit 2.

[0113] In terms of heat resistance, the coffee valve 221 can withstand water temperatures no lower than 100℃. During coffee extraction, the hot water temperature is typically high, and some coffee extraction processes (such as espresso extraction) even require water temperatures close to boiling point. The coffee valve 221 in this embodiment possesses high heat resistance, maintaining structural stability and mechanical properties under high-temperature environments. This prevents deformation, aging, or sealing failure caused by high temperatures, ensuring that the coffee valve 221 maintains optimal working condition during use, thereby guaranteeing the stability of the coffee purification system.

[0114] In some embodiments, the second pressure relief pipe 222 is a heat-resistant hose. For example, the second pressure relief pipe 222 can withstand water temperatures of not less than 100°C. The heat-resistant hose can be made of materials such as silicone or rubber, which can maintain good flexibility and physical stability in high-temperature environments. During the coffee extraction process, the water temperature after being heated by the pressurized instant heating module 5 approaches or reaches 100°C. When the extraction device 23 performs a pressure relief operation, the high-temperature water flows through the second pressure relief pipe 222 to the water receiving device 4. The heat-resistant hose can effectively withstand the impact of the high-temperature water flow, preventing the hose from deforming, hardening, or releasing harmful substances due to excessive temperature, ensuring a safe and reliable pressure relief process. Furthermore, the hose's flexibility makes it easy to install and arrange in the confined space inside the coffee machine, improving the compactness and reliability of the coffee purification system.

[0115] In some embodiments, the coffee purification system also includes a water outlet path 6.

[0116] In the coffee purification system, the water outlet 6 is connected to the pressurized instant heating module 5. The water outlet 6 and the extraction water channel 2 are controlled by the system to selectively connect to the pressurized instant heating module 5, enabling the coffee purifier of this application to have multiple beverage preparation functions. When the user needs hot water, the system controls the pressurized instant heating module 5 to work and connect it to the water outlet 6, directly outputting hot water. When the user needs to brew hot coffee, the system controls the pressurized instant heating module 5 to work and connect it to the extraction water channel 2, and the hot water enters the extraction device 23 along the extraction water channel 2 for coffee extraction. In the room temperature extraction scenario, the system controls the pressurized instant heating module 5 to stop working, and the water flowing through the pressurized instant heating module 5 is not heated and directly enters the extraction device 23, using room temperature water to soak the coffee powder to achieve room temperature coffee brewing.

[0117] In this embodiment, by switching between the water outlet path 6 and the extraction water path 2 and controlling the system, multiple functions such as hot water supply, hot coffee extraction, and room temperature coffee extraction are achieved on the same coffee machine, thereby enhancing the multifunctionality of the coffee machine.

[0118] In some embodiments, the water inlet pipe 11 includes a first water inlet pipe 111 and a second water inlet pipe 112, which are respectively connected to the pressurized instant heating module 5. The water pump 12 includes a water supply pump 121 disposed on the first water inlet pipe 111 and an extraction water pump 122 disposed on the second water inlet pipe 112. The water supply pump 121 and the extraction water pump 122 have different pumping pressures, with the extraction water pump 122 having a higher pumping pressure than the water supply pump 121, to meet the pressure requirements of different functions of the system.

[0119] The extraction water pump 122 can be an electromagnetic pump, a plunger pump, a positive displacement pump (AC or DC), etc., while the water supply pump 121 can be a diaphragm pump, which achieves fluid transport through the reciprocating motion of an elastic diaphragm and has a backflow prevention function. For example, the diaphragm and valve plate of the water supply pump 121 form a sealing structure with a backflow pressure of not less than 2.0 MPa to prevent high-pressure water in the pressurized instant heating module 5 from flowing back and impacting the water supply pump 121, thus preventing damage to the pump body. Simultaneously, the diaphragm pump has an outlet flow rate ≥100 ml / min, thereby meeting daily hot water supply needs.

[0120] The water supply pump 121 pumps water through the first inlet pipe 111 to the pressurized instant heating module 5. After heating, hot water is output through the outlet water path 6, which can be used for daily drinking water, tea brewing, and other needs. The relatively low water pressure is sufficient to meet the water pressure requirements of such usage scenarios. The extraction water pump 122 pressurizes water through the second inlet pipe 112 and delivers it to the pressurized instant heating module 5. Then, it is used in conjunction with the extraction device 23 to prepare coffee through the extraction water path 2. Since coffee extraction requires higher pressure to fully extract the effective components in the coffee powder, the higher pumping pressure of the extraction water pump 122 ensures the efficient operation of the coffee extraction process. In addition, the extraction water pump 122 and the first pressure relief component 13 are arranged sequentially along the water flow direction on the second inlet pipe 112. When the extraction water pump 122 causes the water pressure to be too high, the first pressure relief component 13 can be activated in time to relieve pressure, ensuring the safety of the water system and making the entire water supply and extraction process stable and reliable.

[0121] In some embodiments, the water outlet path 6 includes a water outlet pipe 61 connected to the pressurized instant heating module 5 and a water outlet valve 62 disposed on the water outlet pipe 61. Different functions can be switched by selectively connecting the coffee valve 221 and the water outlet valve 62. When the user needs hot water, the system controls the water outlet valve 62 to connect to the pressurized instant heating module 5. The water supply pump 121 delivers water to the pressurized instant heating module 5 for heating, and then the water flows out through the outlet valve 62 and the outlet nozzle 63 of the water outlet pipe 61. When making coffee, the system controls the coffee valve 221 to connect. The extraction water pump 122 pressurizes the water and sends it into the pressurized instant heating module 5, and then the water enters the extraction device 23 through the connected coffee valve 221 to complete the coffee making.

[0122] The switching and coordination mechanism of the water outlet valve 62 and coffee valve 221 makes the hot water supply and coffee extraction functions independent and do not affect each other. At the same time, it can quickly switch the working mode according to the user's needs, improve the convenience of operation, and further optimize the multi-functionality of the coffee purifier.

[0123] In some embodiments, such as Figure 2 As shown, the water inlet circuit 1 also includes a check valve 14, which is located between the water supply pump 121 and the pressurized instant heating module 5.

[0124] The check valve 14 is used to prevent water from flowing back from the pressurized instant heating module 5 to the water supply pump 121. For example, the check valve 14 has a reverse pressure resistance capacity of not less than 2.0 MPa to adapt to the high-pressure working environment during the coffee extraction process. When the extraction pump 122 is working, the extraction water circuit 2 generates high pressure, posing a risk of high-pressure water flowing back into the water supply pump 121 and related pipelines. In this embodiment, the check valve 14 can quickly block the water flow through its internal sealing structure when reverse pressure occurs, preventing the pipe at the outlet of the water supply pump 121 from detaching due to excessive pressure, thus preventing hot water leakage that could damage the equipment or cause safety hazards. Simultaneously, the check valve 14 also isolates the water supply pump 121 from the high-pressure environment, preventing damage to components caused by reverse high-pressure impacts, effectively extending the service life of the pump 12, and ensuring the stable operation of the hot water supply function.

[0125] In some embodiments, the check valve 14 includes either a mechanical check valve or a solenoid valve. For example, it can be a mechanical high-pressure check valve or a reverse-pressure resistant solenoid valve. Mechanical check valves rely on the fluid's own pressure to control the valve's opening and closing; they are simple in structure, highly reliable, require no additional power supply, and are low in cost. Solenoid valves, on the other hand, control the valve's opening and closing through electromagnetic force, offering advantages such as fast response and precise control. In a coffee purification system, the type of check valve 14 can be selected based on actual needs and cost considerations to meet different functional requirements.

[0126] In some embodiments, the water inlet path 1 further includes a flow meter 15. The flow meter 15 in this embodiment has two configuration options. In one configuration, the flow meter 15 is installed on the second water inlet pipe 112 to independently monitor the water usage during the coffee extraction process. During coffee extraction, the water usage is crucial to the taste and quality of the coffee. By monitoring and controlling the water usage in real time through the flow meter 15, optimal results can be achieved with each extraction.

[0127] In another configuration, the flow meter 15 is installed on the common section of the first inlet pipe 111 and the second inlet pipe 112 to monitor the water consumption for coffee extraction or the water output for hot water. The system can obtain data on the water consumption for coffee extraction, the water output for hot water, and the total water consumption through the flow meter 15, facilitating precise control and management of water usage for different functions.

[0128] This application also provides a control method for a coffee purifier, the control method including: Step S10: Upon receiving a drinking water instruction, control both the inlet water path 1 and the outlet water path 6 to be connected to the pressurized instant heating module 5.

[0129] Understandably, when the coffee purifier's control system receives a water-drinking command, it can connect both the inlet water path 1 and the outlet water path 6 to the pressurized instant heating module 5. Water from the pressurized instant heating module 5 then flows out through the outlet spout 63 of the outlet water path 6 for the user's use. The water-drinking command can include room temperature water, hot water, and boiling water commands. By controlling the pressurized instant heating module 5 to operate or shut down, the system can ensure that the outlet spout 63 of the outlet water path 6 dispenses room temperature water, hot water, or boiling water, thus meeting different user needs and addressing the issue of limited functionality in coffee purifiers.

[0130] Step S20: Upon receiving the extraction command, control both the inlet water path 1 and the extraction water path 2 to be connected to the pressurized instant heating module 5.

[0131] Understandably, when the coffee purifier's control system receives an extraction command, it can connect both the inlet water path 1 and the extraction water path 2 to the pressurized instant heating module 5. This allows water from the pressurized instant heating module 5 to flow out through the extraction nozzle 24 of the extraction water path 2, enabling the user to extract coffee. The extraction command can include both room temperature and hot extraction commands, and by controlling the pressurized instant heating module 5 to operate or shut down, hot or room temperature extraction can be achieved to meet different user needs.

[0132] Please see Figure 1 In some embodiments, the water inlet path 1 includes a first water inlet pipe 111 connected to the pressurized instant heating module 5, a water supply pump 121 installed on the first water inlet pipe 111, a second water inlet pipe 112 connected to the pressurized instant heating module 5, and an extraction water pump 122 installed on the second water inlet pipe 112; the water outlet path 6 includes a water outlet pipe 61 connected to the pressurized instant heating module 5 and a water outlet valve 62 installed on the water outlet pipe 61; the extraction path 2 includes an extraction pipe 21 connected to the pressurized instant heating module 5, and a coffee valve 221 and an extraction device 23 sequentially installed on the extraction pipe 21 along the water flow direction.

[0133] Please see Figure 3 Step S10 may include: Step S101: Upon receiving a drinking water instruction, power on the water outlet valve 62.

[0134] Upon receiving a drinking water instruction, the system controls the water outlet valve 62 to be energized, thereby connecting the water outlet path 6 with the pressurized instant heating module 5. This indicates that the pressurized instant heating module 5 needs to hold water so that, after the water outlet valve 62 is energized, the water outlet 63 of the water outlet path 6 can flow out water corresponding to the drinking water instruction.

[0135] Step S102: Control the water supply pump 121 to start working after the water outlet valve 62 is powered on for a first preset time.

[0136] It is understandable that the water supply pump 121 is powered on only after the outlet valve 62 has been powered on for a first preset time. This allows the water in the first inlet pipe 111 to be pumped to the pressurized instant heating module 5, ensuring that both the first inlet pipe 111 and the pressurized instant heating module 5 are filled with water. This prevents water shortage in the pressurized instant heating module 5 and avoids dry burning. Furthermore, in this embodiment, the outlet valve 62 is powered on before the water supply pump 121. This solves the problem of back pressure at the outlet of the water supply pump 121 due to the delayed power-on of the outlet valve 62, which could cause the connection between the outlet of the water supply pump 121 and the inlet pipe 11 to detach due to pressure. It also avoids the problem of reduced lifespan of the outlet valve 62 under instantaneous pressure impact at the front end.

[0137] It should be noted that the first preset duration mentioned above can be 0.5 seconds, 1 second, 2 seconds, 3 seconds, ..., 10 seconds, ..., 100 seconds, ..., 200 seconds, etc.

[0138] Please see Figure 4 Step S20 includes: Step S201: Upon receiving the extraction command, power on the coffee valve 221; Upon receiving the extraction command, the coffee valve 221 is energized to connect the extraction water path 2 with the pressurized instant heating module 5, indicating that the pressurized instant heating module 5 needs to contain water so that the extraction nozzle 24 of the extraction water path 2 can flow out coffee extracted at different temperatures after the coffee valve 221 is energized.

[0139] Step S202: Control the extraction water pump 122 to start working after the coffee valve 221 is powered on for a second preset time; or control the extraction water pump 122 to be powered on synchronously with the coffee valve 221.

[0140] Understandably, after the coffee valve 221 is powered on for a second preset time, the extraction water pump 122 is then powered on to operate, so that the water in the second water inlet pipe 112 can be pumped to the pressurized instant heating module 5 through the extraction water pump 122. In this way, both the second water inlet pipe 112 and the pressurized instant heating module 5 are filled with water to prevent the pressurized instant heating module 5 from running out of water, thereby avoiding situations such as dry burning.

[0141] Furthermore, after coffee extraction is complete, the coffee valve 221 needs to be closed after a second preset time since the extraction pump 122 is shut off. It is understood that when the coffee purifier executes the extraction command, the second water inlet pipe 112 between the extraction pump 122 and the pressurized instant heating module 5 is under high pressure, ranging from 0 MPa to 2.0 MPa. Therefore, by controlling the coffee valve 221 to remain open for the second preset time after the extraction pump 122 is shut off, the coffee valve 221 can continue to open for the second preset time, thereby releasing pressure from the second water inlet pipe 112 between the extraction pump 122 and the pressurized instant heating module 5, reducing the risk of leakage due to pressure failure of the second water inlet pipe 112.

[0142] Alternatively, the extraction water pump 122 and the coffee valve 221 can be powered on synchronously, so that the second water inlet pipe 112 and the extraction water circuit 2 are simultaneously connected to the pressurized instant heating module 5.

[0143] It should be noted that the second preset duration mentioned above can be 0.5 seconds, 1 second, 2 seconds, 3 seconds, ..., 100 seconds, ..., 200 seconds, etc.

[0144] Of course, in other embodiments, in order to achieve the optimal extraction pressure required for espresso, which is 0.9MPa to 1.2MPa, i.e., the preset pressure value ranges from 0.9MPa to 1.2MPa, the coffee valve 221 can be energized after the extraction pump 122 has been energized for a second preset time. Thus, the second preset time can be calculated in two ways: firstly, a pressure sensor is installed on the first inlet pipe 112 connected to the outlet of the extraction pump 122, and the second preset time corresponds to the time when the pressure value reaches the preset pressure value after the extraction pump 122 has been energized; secondly, the second preset time is determined by the actual measured time when the pressure value reaches the preset pressure value after the extraction pump 122 has been energized.

[0145] Furthermore, in some embodiments, the drinking water instruction includes a room temperature water instruction, a hot water instruction, and a boiling water instruction.

[0146] Please see Figure 5 Therefore, after step 102, the following steps are included: Step 103: When the drinking water command is a room temperature water command, control the pressurized instant heating module 5 to shut down.

[0147] Understandably, at this time, the coffee dispenser needs to supply room temperature water, and the temperature range of room temperature water is usually between 5℃ and 35℃. Therefore, the pressurized instant heating module 5 is closed, and based on the operation of the water outlet valve 62 and the water supply pump 121, the water supply pump 121 can pump the water in the first water inlet pipe 111 to the pressurized instant heating module 5. Since the pressurized instant heating module 5 is closed, the water in the pressurized instant heating module 5 is not heated. And since the water outlet valve 62 is powered on at this time, the room temperature water in the pressurized instant heating module 5 flows to the water outlet path 6 and flows out from the water outlet 63 of the water outlet path 6, so as to realize the coffee purifier supplying room temperature water.

[0148] Please see Figure 6 Alternatively, after step S102, the following is included: Step S104: When the drinking water command is a hot water command, control the pressurized instant heating module 5 to operate at the first power.

[0149] Understandably, the coffee maker needs to supply hot water at this time, and the temperature range of hot water is usually between 88℃ and 96℃. Therefore, it is necessary to control the pressurized instant heating module 5 to work, that is, to control the pressurized instant heating module 5 to work at the first power. Based on the operation of the water outlet valve 62 and the water supply pump 121, the water supply pump 121 can pump the water in the first water inlet pipe 111 to the pressurized instant heating module 5 and control the water in the pressurized instant heating module 5 to heat it. Since the water outlet valve 62 is powered on at this time, the heated hot water in the pressurized instant heating module 5 flows to the water outlet path 6 and flows out from the water outlet 63 of the water outlet path 6, so as to realize the supply of hot water to the coffee maker.

[0150] In other embodiments, the drinking water instruction can also be a warm water instruction, with the warm water temperature ranging from 36°C to 87°C. In this case, the pressurized instant heating module 5 operates at a first power to heat the water within the pressurized instant heating module 5, thereby enabling the coffee purifier to supply warm water. Of course, the pressurized instant heating module 5 can also heat the water at other power levels.

[0151] Please see Figure 7 Alternatively, after step S102, the following is included: Step S105: When the drinking water command is a boiling water command, control the pressurized instant heating module 5 to work at the second power, which is greater than the first power.

[0152] Understandably, the coffee maker needs to supply boiling water at this time, and the temperature range of boiling water is usually between 97°C and 100°C. Therefore, it is necessary to control the pressurized instant heating module 5 to work, that is, to control the pressurized instant heating module 5 to work at the second power. Based on the operation of the water outlet valve 62 and the water supply pump 121, the water supply pump 121 can pump the water in the first water inlet pipe 111 to the pressurized instant heating module 5 and control the water in the pressurized instant heating module 5 to heat it. Since the water outlet valve 62 is powered on at this time, the heated boiling water in the pressurized instant heating module 5 flows to the water outlet path 6 and flows out from the water outlet 63 of the water outlet path 6, so as to realize the coffee maker supplying boiling water.

[0153] It should be noted that the second power is greater than the first power. That is, since the drinking water instruction is boiling water, the temperature range of boiling water is higher than that of hot water. By increasing the heating power of the pressurized instant heating module 5, i.e., setting the second power to be greater than the first power, the pressurized instant heating module 5 can heat to the preset temperature in a shorter time to meet the user's water needs and reduce the user's waiting time.

[0154] Please see Figure 8 In some embodiments, step 105 includes: Step 1051: When the preheating mode is activated, control the water supply pump 121 and the outlet valve 62 to close.

[0155] Understandably, since the coffee purifier needs to supply boiling water, which has a high temperature, the preheating mode of the pressurized instant heating module 5 can be activated to increase the heating speed of the pressurized instant heating module 5. That is, the water outlet valve 62 and the water supply pump 121 are powered on to fill the space between the first water inlet pipe 111 and the water outlet of the pressurized instant heating module 5. Then, the water supply pump 121 and the water outlet valve 62 are closed, and the pressurized instant heating module 5 is powered on to heat the water inside the pressurized instant heating module 5.

[0156] The start-up time t1 (in seconds) of the water supply pump 121 is determined by its unit flow rate C11 (in minutes) and the water capacity Q11 from the outlet of the water supply pump 121 to the outlet of the pressurized instant heating module 5, i.e., t1 = Q11 / C11 60. In this way, the water supply pump 121 can be precisely controlled to shut off after the water outlet of the water supply pump 121 and the water outlet of the pressurized instant heating module 5 are filled.

[0157] Step 1052: Control the pressurized instant heating module 5 to heat the water to the first preset temperature with the second power.

[0158] It is understandable that, based on the closure of the water supply pump 121 and the outlet valve 62, and the operation of the pressurized instant heating module 5, the pressurized instant heating module 5 can operate at the second power to heat the water to the first preset temperature, thereby preheating the water in the pressurized instant heating module 5.

[0159] Step 1053: Control the water supply pump 121 to start working after the first preset time after the outlet valve 62 is powered on.

[0160] Understandably, after the water in the pressurized instant heating module 5 is heated to the first preset temperature, the outlet valve 62 is powered on, and after the outlet valve 62 is powered on for a first preset time, the water supply pump 121 is powered on. At this time, both the first inlet pipe 111 and the outlet pipe 61 are connected to the pressurized instant heating module 5, so that the water in the first inlet pipe 111 still flows to the pressurized instant heating module 5.

[0161] Step 1054: Control the pressurized instant heating module 5 to heat the water to the second preset temperature using the second power.

[0162] Understandably, because the temperature of boiling water is high, the pressurized instant heating module 5 still needs to operate at the second power before water flows out of the spout 63 to heat the water to the second preset temperature. The second preset temperature is higher than the first preset temperature, that is, the second preset temperature can be 90℃, 91℃, 92℃, 93℃, etc., to meet the requirement of the coffee purifier to dispense boiling water. The pressurized instant heating module 5 first heats the water to the first preset temperature and then further heats it to the second preset temperature to reduce the user's waiting time.

[0163] Alternatively, step 105 includes: Step 1055: When the non-preheating mode is enabled, control the pressurized instant heating module 5 to heat the water to the second preset temperature with the second power.

[0164] Understandably, when the pressurized instant heating module 5 is in non-preheating mode, the control outlet valve 62 and the water supply pump 121 are powered on to fill the space between the first inlet pipe 111 and the outlet of the pressurized instant heating module 5. Then, the control of the pressurized instant heating module 5 is to operate at the second power to heat the water to the second preset temperature, thereby meeting the requirement of the coffee purifier to dispense boiling water.

[0165] In some embodiments, since the pressurized instant heating module 5 can heat the water to a first preset temperature and a second preset temperature using the second power when operating at the second power, the power value of the second power is not fixed and can be adjusted according to different factors. Specifically, step 1054 or step 1055 includes: Step 1056: When water is supplied for the first time and the preheating mode is activated, adjust the second power according to the unit flow rate of the water supply pump 121, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the first inlet pipe 111, the outlet pipe 61, the pressurized instant heating module 5, the water supply pump 121, and the outlet valve 62, and the heat loss caused by changes in ambient temperature.

[0166] It is understandable that when the first inlet pipe 111 and the outlet pipe 61 are filled with water for the first time, there is no water remaining in the first inlet pipe 111 and the outlet pipe 61. At this time, when the pressurized instant heating module 5 is in preheating mode, its second power can be adjusted according to the unit flow rate of the water supply pump 121, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the first inlet pipe 111, the outlet pipe 61, the pressurized instant heating module 5, the water supply pump 121, and the outlet valve 62, as well as the heat loss caused by changes in ambient temperature, so as to quickly heat the water to the second preset temperature.

[0167] Alternatively, in step 1057, when water is initially supplied and the non-preheating mode is activated, the second power is adjusted based on the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the water supply pump 121, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the first inlet pipe 111, the outlet pipe 61, the pressurized instant heating module 5, the water supply pump 121, and the outlet valve 62, and the heat loss caused by changes in ambient temperature.

[0168] It is understandable that when the first inlet pipe 111 and the outlet pipe 61 are filled with water for the first time, there is no water remaining in the first inlet pipe 111 and the outlet pipe 61. At this time, when the pressurized instant heating module 5 is in non-preheating mode, its second power can be adjusted according to the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the water supply pump 121, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the first inlet pipe 111, the outlet pipe 61, the pressurized instant heating module 5, the water supply pump 121, and the outlet valve 62, and the heat loss caused by changes in ambient temperature. At this time, the internal water capacity of the pressurized instant heating module 5 is taken into consideration so that the second power can be accurately adjusted, thereby quickly heating the water temperature to the second preset temperature.

[0169] Alternatively, in step 1058, when water is not being supplied for the first time and the preheating mode is enabled, the second power is adjusted based on the unit flow rate of the water supply pump 121, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the first inlet pipe 111, the outlet pipe 61, the pressurized instant heating module 5, the water supply pump 121, and the outlet valve 62, the heat loss caused by changes in ambient temperature, and the residual water volume between the pressurized instant heating module 5 and the outlet valve 62.

[0170] It is understandable that when the first inlet pipe 111 and outlet pipe 61 are not filled with water for the first time, there will be residual water between the outlet end of the pressurized instant heating module 5 and the outlet valve 62. The amount of residual water between the outlet end of the pressurized instant heating module 5 and the outlet valve 62 will also affect the boiling water temperature flowing out of the outlet 63 of the outlet pipe 61, thus affecting the user experience. Therefore, when the pressurized instant heating module 5 starts the preheating mode, the second power of the pressurized instant heating module 5 can be determined according to the unit flow rate of the water supply pump 121. The system adjusts the amount of water supplied, the temperature difference between the inlet and outlet water of the pressurized instant heating module 5, the heat loss of the first inlet pipe 111, outlet pipe 61, pressurized instant heating module 5, water supply pump 121, and outlet valve 62, the heat loss caused by changes in ambient temperature, and the residual water volume between the pressurized instant heating module 5 and the outlet valve 62. This is to prevent the boiling water flowing from the outlet 63 from being affected by the residual water volume between the pressurized instant heating module 5 and the outlet valve 62, thus solving the problem of the first cup of boiling water being too low.

[0171] Alternatively, in step 1059, when water is not being supplied for the first time and the non-preheating mode is enabled, the second power is adjusted based on the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the water supply pump 121, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the first inlet pipe 111, the outlet pipe 61, the pressurized instant heating module 5, the water supply pump 121, and the outlet valve 62, the heat loss caused by changes in ambient temperature, and the residual water volume between the pressurized instant heating module 5 and the outlet valve 62.

[0172] It is understandable that when the first inlet pipe 111 and outlet pipe 61 are not filled with water for the first time, there will be residual water between the outlet end of the pressurized instant heating module 5 and the outlet valve 62. The amount of residual water between the outlet end of the pressurized instant heating module 5 and the outlet valve 62 will also affect the boiling water temperature flowing out of the outlet nozzle 63 of the outlet pipe 61, thus affecting the user experience. Therefore, when the pressurized instant heating module 5 starts in non-preheating mode, the second power of the pressurized instant heating module 5 can be determined based on the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the water supply pump 121, and the inlet and outlet water temperatures of the pressurized instant heating module 5. The system adjusts the heat loss of the first inlet pipe 111, outlet pipe 61, pressurized instant heating module 5, water supply pump 121, and outlet valve 62, the heat loss caused by changes in ambient temperature, and the residual water volume between the pressurized instant heating module 5 and the outlet valve 62 to prevent the boiling water flowing from the outlet 63 from being affected by the residual water volume between the pressurized instant heating module 5 and the outlet valve 62. At the same time, the internal water capacity of the pressurized instant heating module 5 is taken into account so that the second power can be accurately adjusted, thereby quickly heating the water temperature to the second preset temperature and solving the problem of the first cup of boiling water being too low.

[0173] In some embodiments, the extraction instructions include room temperature extraction instructions and hot extraction instructions.

[0174] Please see Figure 9 Therefore, after step 202, the following steps are included: Step 203: When the extraction command is a room temperature extraction command, control the pressure-bearing instant heating module 5 to shut down.

[0175] Understandably, the coffee dispenser needs to supply room temperature extraction at this time, so room temperature water is required. The temperature range of room temperature water is usually between 5°C and 35°C. Therefore, the pressurized instant heating module 5 is closed. Based on the operation of the coffee valve 221 and the extraction water pump 122, the extraction water pump 122 can pump the water in the second water inlet pipe 112 to the pressurized instant heating module 5. Since the pressurized instant heating module 5 is closed, the water in the pressurized instant heating module 5 is not heated. Since the coffee valve 221 is powered on at this time, the room temperature water in the pressurized instant heating module 5 flows to the extraction water path 2. After extraction by the extraction device 23, the coffee flows out from the extraction nozzle 24, so as to realize the coffee purifier supplying room temperature extraction.

[0176] Please see Figure 10 Or, after step 202, it includes: Step 204: When the extraction command is a hot extraction command, control the pressure-bearing instant heating module 5 to operate at the third power.

[0177] Understandably, the coffee dispenser needs to supply hot brew at this time. The normal temperature for hot brew is 88℃~96℃, and the optimal temperature for hot brew is 92℃~93℃. Therefore, it is necessary to control the operation of the pressurized instant heating module 5, that is, to control the pressurized instant heating module 5 to operate at the third power. Based on the operation of the coffee valve 221 and the extraction water pump 122, the extraction water pump 122 can pump the water in the second water inlet pipe 112 to the pressurized instant heating module 5 and control the water in the pressurized instant heating module 5 to heat up. Since the coffee valve 221 is powered on at this time, the heated hot water in the pressurized instant heating module 5 flows to the extraction water path 2, and after extraction by the extraction device 23, the coffee flows out from the extraction nozzle 24 to realize the supply of hot brew by the coffee dispenser.

[0178] Please see Figure 11 Furthermore, in some embodiments, step 204 includes: Step 2041: When the preheating mode is enabled, control the extraction water pump 122 to shut down after the coffee valve 221 has been closed for a second preset time; or control the extraction water pump 122 to shut down synchronously with the coffee valve 221.

[0179] Understandably, since the coffee purifier needs to supply hot brew at a temperature of 88℃~96℃, and the hot water temperature is relatively high, in order to improve the heating speed of the pressurized instant heating module 5, the preheating mode of the pressurized instant heating module 5 can be activated; that is, the coffee valve 221 and the extraction water pump 122 are powered on to make the water in the second water inlet pipe 112 and the water outlet of the pressurized instant heating module 5 full, and then the coffee valve 221 and the extraction water pump 122 are closed, and the pressurized instant heating module 5 is operated to heat the water in the pressurized instant heating module 5.

[0180] The start-up time t2 (in seconds) of the extraction water pump 122 is determined by its unit flow rate C21 (in minutes) and the water capacity Q21 from the outlet of the water supply pump 121 to the outlet of the pressurized instant heating module 5, i.e., t2 = Q21 / C21 60. In this way, the extraction water pump 122 can be precisely controlled to shut off after the water outlet of the extraction water pump 122 and the water outlet of the pressurized instant heating module 5 are filled.

[0181] It should be noted that when the coffee purifier does not execute the hot brewing command, both the extraction water pump 122 and the coffee valve 221 are closed. This differs from the above-mentioned operation of the preheating mode, where the extraction water pump 122 is controlled to close after the coffee valve 221 has been closed for a second preset time, or the extraction water pump 122 and the coffee valve 221 are controlled to close synchronously. In this case, the area between the second water inlet pipe 112 and the outlet of the pressurized instant heating module 5 is filled with water.

[0182] Step 2042: Control the pressurized instant heating module 5 to heat the water to the third preset temperature using the third power.

[0183] Understandably, based on the closure of the extraction water pump 122 and coffee valve 221, and the operation of the pressurized instant heating module 5, the pressurized instant heating module 5 can operate at the third power to heat the water to the third preset temperature, thereby preheating the water in the pressurized instant heating module 5.

[0184] Step 2043: Control the extraction water pump 122 to start working after the coffee valve 221 is powered on for a second preset time; or control the coffee valve 221 and the extraction water pump 122 to be powered on synchronously.

[0185] It is understandable that after the water in the pressurized instant heating module 5 is heated to the third preset temperature, the coffee valve 221 is powered on, and after the coffee valve 221 is powered on for a first preset time, the extraction water pump 122 is powered on; or the coffee valve 221 and the extraction water pump 122 are powered on synchronously. At this time, the second water inlet pipe 112 and the extraction pipe 21 are both connected to the pressurized instant heating module 5, so that the water in the second water inlet pipe 112 still flows to the pressurized instant heating module 5.

[0186] Step 2044: Control the pressurized instant heating module 5 to heat the water to the fourth preset temperature using the third power.

[0187] Understandably, since the coffee purifier supplies water at a temperature of 88℃~96℃ during hot brewing, the hot water temperature is relatively high. Therefore, before the coffee flows out of the extraction nozzle 24, the pressurized instant heating module 5 still needs to operate at a third power to heat the water to a fourth preset temperature. This fourth preset temperature is higher than the third preset temperature; that is, the fourth preset temperature can be 90℃, 91℃, 92℃, 93℃, etc., to ensure that the coffee purifier dispenses hot water and extracts the hot brewed coffee when the hot water flows to the extraction device 23. Furthermore, the pressurized instant heating module 5 first heats the water to the third preset temperature and then further heats it to the fourth preset temperature to reduce the user's waiting time.

[0188] Furthermore, since there is pressure inside the extraction device 23 when the coffee purifier executes the hot extraction command, the pressure can be released through the extraction nozzle 24 to ensure the safety and reliability of the coffee purifier.

[0189] In this mode, the pipeline of extraction tube 21 between the water outlet of pressurized instant heating module 5 and coffee valve 221 can be shorter, thus shortening the heating time to the third preset temperature.

[0190] Alternatively, step 204 includes: Step 2045: When the non-preheating mode is enabled, control the pressurized instant heating module 5 to heat the water to the fourth preset temperature with the third power.

[0191] Understandably, when the pressurized instant heating module 5 is in non-preheating mode, the coffee valve 221 and the extraction water pump 122 are powered on to fill the space between the second water inlet pipe 112 and the water outlet of the pressurized instant heating module 5. Then, the pressurized instant heating module 5 is powered on to heat the water to the fourth preset temperature. The water can then flow through the extraction pipe 21 into the extraction device 23 to extract the coffee, thereby meeting the hot extraction requirements of the coffee purifier.

[0192] In some embodiments, since the pressurized instant heating module 5 can heat the water to a third preset temperature and a fourth preset temperature at the third power when operating at the third power, the power value of the third power is not fixed and can be adjusted according to different factors. Specifically, step 2044 or step 2045 includes: Step 2046: When water is added for the first time and the preheating mode is activated, adjust the third power according to the unit flow rate of the extraction water pump 122, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the second water inlet pipe 112, the extraction pipe 21, the pressurized instant heating module 5, the extraction water pump 122, and the coffee valve 221, as well as the heat loss caused by changes in ambient temperature.

[0193] Understandably, when the second water inlet pipe 112 and extraction pipe 21 are filled with water for the first time, there is no water remaining in the second water inlet pipe 112 and extraction pipe 21. At this time, when the pressurized instant heating module 5 is in preheating mode, its third power can be adjusted according to the unit flow rate of the extraction water pump 122, the difference between the inlet water temperature and the outlet water temperature of the pressurized instant heating module 5, the heat loss of the second water inlet pipe 112, extraction pipe 21, pressurized instant heating module 5, extraction water pump 122 and coffee valve 221, and the heat loss caused by changes in ambient temperature, so as to quickly heat the water to the fourth preset temperature.

[0194] Alternatively, in step 2047, when water is first added and the non-preheating mode is enabled, the third power is adjusted based on the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the extraction water pump 122, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the second inlet pipe 112, the extraction pipe 21, the pressurized instant heating module 5, the extraction water pump 122, and the coffee valve 221, as well as the heat loss caused by changes in ambient temperature.

[0195] It is understandable that when the second water inlet pipe 112 and the extraction pipe 21 are filled with water for the first time, there is no water remaining in the second water inlet pipe 112 and the extraction pipe 21. At this time, when the pressurized instant heating module 5 is in non-preheating mode, its third power can be adjusted according to the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the extraction water pump 122, the difference between the inlet water temperature and the outlet water temperature of the pressurized instant heating module 5, the heat loss of the second water inlet pipe 112, the extraction pipe 21, the pressurized instant heating module 5, the extraction water pump 122 and the coffee valve 221, and the heat loss caused by changes in ambient temperature. At this time, the internal water capacity of the pressurized instant heating module 5 is taken into consideration so that the third power can be accurately adjusted, thereby quickly heating the water temperature to the fourth preset temperature.

[0196] Alternatively, in step 2048, when water is not being added for the first time and the preheating mode is enabled, the third power is adjusted based on the unit flow rate of the extraction water pump 122, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the second inlet pipe 112, the extraction pipe 21, the pressurized instant heating module 5, the extraction water pump 122, and the coffee valve 221, the heat loss caused by changes in ambient temperature, and the residual water volume between the pressurized instant heating module 5 and the coffee valve 221.

[0197] It is understandable that when the second water inlet pipe 112 and extraction pipe 21 are not initially filled with water, residual water remains between the outlet of the pressurized instant heating module 5 and the coffee valve 221. This residual water will affect the boiling water temperature when the water flows from the extraction pipe 21 to the extraction device 23, thus affecting the extraction quality. Therefore, when the pressurized instant heating module 5 starts its preheating mode, the third power of the pressurized instant heating module 5 can be determined based on the unit flow rate of the extraction water pump 122 and the power of the pressurized instant heating module 5. The temperature difference between the inlet and outlet water, the heat loss of the second inlet pipe 112, extraction pipe 21, pressurized instant heating module 5, extraction water pump 122 and coffee valve 221, the heat loss caused by changes in ambient temperature, and the residual water volume between the pressurized instant heating module 5 and coffee valve 221 are adjusted to avoid the boiling water flowing from the extraction pipe 21 to the extraction device 23 being affected by the residual water volume between the pressurized instant heating module 5 and coffee valve 221, and to solve the problem of the first cup of hot brew being too low, resulting in poor hot brew quality.

[0198] Alternatively, in step 2049, when water is not being added for the first time and the non-preheating mode is enabled, the third power is adjusted based on the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the extraction water pump 122, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, the heat loss of the second inlet pipe 112, the extraction pipe 21, the pressurized instant heating module 5, the extraction water pump 122, and the coffee valve 221, the heat loss caused by changes in ambient temperature, and the residual water volume between the pressurized instant heating module 5 and the coffee valve 221.

[0199] It is understandable that when the second water inlet pipe 112 and extraction pipe 21 are not filled with water for the first time, there will be residual water between the outlet of the pressurized instant heating module 5 and the coffee valve 221. The amount of residual water between the outlet of the pressurized instant heating module 5 and the coffee valve 221 will also affect the boiling water temperature when the water flows from the extraction pipe 21 to the extraction device 23, thus affecting the extraction quality. Therefore, when the pressurized instant heating module 5 is in non-preheating mode, the third power of the pressurized instant heating module 5 can be determined based on the internal water capacity of the pressurized instant heating module 5, the unit flow rate of the extraction water pump 122, the difference between the inlet and outlet water temperatures of the pressurized instant heating module 5, and the second water inlet pipe 21. The heat loss of water pipe 112, extraction pipe 21, pressurized instant heating module 5, extraction water pump 122, and coffee valve 221, the heat loss caused by changes in ambient temperature, and the residual water volume between pressurized instant heating module 5 and coffee valve 221 are adjusted to avoid the boiling water flowing from extraction pipe 21 to extraction device 23 being affected by the residual water volume between pressurized instant heating module 5 and coffee valve 221. At the same time, the internal water capacity of pressurized instant heating module 5 is taken into account so that the third power can be precisely adjusted, thereby quickly heating the water temperature to the fourth preset temperature and solving the problem of the first cup of hot brew being too low, resulting in poor hot brew quality.

[0200] Please see Figure 1 as well as Figure 12 In some embodiments, a flow meter 15 is also installed on the second inlet pipe 112, which is used to monitor the water flow rate through the second inlet pipe 112 in real time. The control method includes: Step 30: Upon receiving the cleaning command, control the flow meter 15 to read the water flow rate of the second inlet pipe 112 in real time.

[0201] It is understood that the cleaning instructions in this embodiment are mainly for cleaning the second water inlet pipe 112, the pressurized instant heating module 5, and the extraction tube 21. Specifically, upon receiving a cleaning instruction, the flow meter 15 is controlled to operate, enabling the flow meter 15 to read the water flow rate through the second water inlet pipe 112 in real time.

[0202] Step 31: Power on coffee valve 221.

[0203] In this way, the extraction tube 21 is connected to the pressurized instant heating module 5 to indicate that the pressurized instant heating module 5 needs to contain water, and to indicate that the extraction water pump 122 in the second water inlet pipe 112 needs to pump water to the pressurized instant heating module 5.

[0204] Step 32: Control the extraction water pump 122 to start working after the coffee valve 221 is powered on for a second preset time; or, control the extraction water pump 122 to be powered on synchronously with the coffee valve 221.

[0205] In this way, the second water inlet pipe 112 and the extraction pipe 21 are connected to the pressurized instant heating module 5, so that the water in the second water inlet pipe 112 flows to the pressurized instant heating module 5 and the extraction pipe 21, and flows through the coffee valve 221 and the extraction device 23, so as to flow out from the extraction nozzle 24.

[0206] It should be noted that no coffee grounds are placed in the extraction device 23 at this time; the extraction device 23 is only being cleaned. Furthermore, the user needs to place a water container under the extraction nozzle 24 to prevent water flowing from the extraction nozzle 24 from wetting the countertop where the coffee purifier is placed.

[0207] Step 33: When the water flow rate reaches the preset water flow rate, control the extraction water pump 122 to shut off.

[0208] It is understandable that since the flow meter 15 reads the water flow of the second inlet pipe 112 in real time, the flow meter 15 can accumulate the total water flow through the second inlet pipe 112. When the water flow reaches the preset water flow, the extraction water pump 122 is controlled to shut down, so that the second inlet pipe 112 and the pressurized instant heating module 5 are closed, thereby preventing water from continuing to flow to the pressurized instant heating module 5.

[0209] It should be noted that the embodiments of this application do not specifically limit the capacity of the preset water flow rate.

[0210] For example, during the first cleaning, the volume of the preset water flow rate must be greater than or equal to 60 ml to meet the cleaning requirements, and the pressurized instant heating module 5 can be turned off or operated.

[0211] For example, during non-first cleaning and before coffee extraction, since the coffee extraction device 23 may have residual coffee powder from the previous extraction, in order to meet the cleaning requirements, the volume of the preset water flow rate must be greater than or equal to 30 ml, and the pressurized instant heating module 5 must be working.

[0212] For example, in cases other than the initial cleaning and after coffee extraction, since coffee powder may remain in the coffee extraction device 23, the volume of the preset water flow rate needs to be greater than or equal to 30 ml to meet cleaning requirements. Furthermore, in this embodiment, before issuing the cleaning command, the user needs to clean the removable parts of the extraction device 23, then reinstall it and clean it again to further clean the extraction device 23 and ensure the pressurized instant heating module 5 is operational.

[0213] Step 34: Control the coffee valve 221 to close after a second preset time since the extraction pump 122 is turned off.

[0214] Understandably, after the extraction water pump 122 is turned off, the coffee valve 221 is closed after a second preset time, thus completing the cleaning and depressurization of the coffee purifier.

[0215] Please see Figure 1 as well as Figure 13 In some embodiments, the coffee purifier includes a pure water tank 3, which is connected to a second water inlet pipe 112, and a flow meter 15 is also installed on the second water inlet pipe 112. The control method includes: Step 40: Upon receiving the descaling command, control the flow meter 15 to read the water flow rate of the second inlet pipe 112 in real time.

[0216] It is understandable that coffee extraction requires high water quality, and water quality varies from region to region. Therefore, after prolonged use of the coffee purifier, scale can easily accumulate in the pipes through which the water flows, affecting the quality of the coffee extraction. Thus, the coffee purifier in this embodiment is equipped with a descaling mode; that is, the user can add an appropriate amount of food-grade citric acid or coffee-specific descaling agent to the pure water tank 3 and stir well. Afterwards, the flow meter 15 is activated to read the water flow rate through the second inlet pipe 112 in real time.

[0217] In this embodiment, the specific timing of the descaling instruction is not limited. For example, the user can be prompted to activate the descaling mode by counting the number of coffee extractions or by monitoring the cumulative water flow during coffee extraction using the flow meter 15. For example, the user can be prompted to activate the descaling mode when the flow meter 15 detects a decrease in coffee flow rate greater than 30%; or when the extraction time for a single cup of coffee increases from 25 seconds to 35 seconds; or when the cumulative usage time of the coffee purifier exceeds two months.

[0218] Step 41: Power on coffee valve 221.

[0219] In this way, the extraction tube 21 is connected to the pressurized instant heating module 5 to indicate that the pressurized instant heating module 5 needs to contain water, and to indicate that the extraction water pump 122 in the second water inlet pipe 112 needs to pump water to the pressurized instant heating module 5.

[0220] Step 42: Control the extraction water pump 122 to start working after the coffee valve 221 is powered on for a second preset time; or control the extraction water pump 122 to be powered on synchronously with the coffee valve 221.

[0221] In this way, the second water inlet pipe 112 and the extraction pipe 21 are connected to the pressurized instant heating module 5, so that the water in the second water inlet pipe 112 flows to the pressurized instant heating module 5 and the extraction pipe 21, and flows through the coffee valve 221 and the extraction device 23, so as to flow out from the extraction nozzle 24.

[0222] It should be noted that no coffee grounds are placed in the extraction device 23 at this time; the extraction device 23 is only being cleaned. Furthermore, the user needs to place a water container under the extraction nozzle 24 to prevent water flowing from the extraction nozzle 24 from wetting the countertop where the coffee purifier is placed.

[0223] Step 43: Control the operation of the pressure-bearing instant heating module 5.

[0224] In this way, the pressurized instant heating module 5 can heat the flowing water to further enhance the descaling effect.

[0225] Step 44: When the flow meter 15 detects that the water flow rate of the second water inlet pipe 112 is the preset water flow rate, control the extraction water pump 122 to shut down.

[0226] Understandably, since the flow meter 15 reads the water flow rate through the second inlet pipe 112 in real time, it can accumulate the total water flow rate through the second inlet pipe 112. When the water flow rate reaches the preset flow rate, it controls the extraction water pump 122 to shut down, thereby closing the connection between the second inlet pipe 112 and the pressurized instant heating module 5. It should be noted that the preset flow rate is to ensure that no water flows through the second inlet pipe 112, that is, the water in the pure water tank 3 is completely drained.

[0227] Step 45: Control the pressure-bearing instant heating module 5 to shut down.

[0228] Understandably, after the extraction pump 122 is turned off, the coffee valve 221 is still powered on. At this time, the water in the pressurized instant heating module 5 will continue to flow to the extraction tube 21. In order to prevent the pressurized instant heating module 5 from continuing to burn dry when there is no water, it is necessary to control the pressurized instant heating module 5 to be turned off.

[0229] Step 46: Control the coffee valve 221 to close after a second preset time after the extraction water pump 122 is turned off, or control the coffee valve 221 and the extraction water pump 122 to close simultaneously.

[0230] That is, after the extraction water pump 122 and the pressurized instant heating module 5 are both turned off, the coffee valve 221 will close after the extraction water pump 122 has been turned off for a second preset time, so as to prevent the extraction nozzle 24 of the extraction tube 21 from continuing to flow water.

[0231] Alternatively, the coffee valve 221 and the extraction pump 122 can be shut off simultaneously to reduce the problem of water still flowing from the outlet of the coffee valve 221 due to residual pressure in the extraction pump 122, thereby shortening the time when coffee liquid continuously flows from the extraction nozzle 24.

[0232] Step 47: Control the pure water tank 3 to refill with water to the highest water level.

[0233] Understandably, after the coffee valve 221 is closed, the pure water tank 3 is refilled with water to the highest level so that the pure water tank 3 is full of water, so that the pure water tank 3, the second water inlet pipe 112, the pressurized instant heating module 5, the extraction pipe 21, the coffee valve 221 and the extraction device 23 can be cleaned in the future.

[0234] It should be noted that users do not need to add food-grade citric acid or coffee-specific descaling agent to the pure water tank 3 at this time.

[0235] Step 48: Re-execute the step of energizing the coffee valve 221, and repeat the above cycle at least twice.

[0236] Understandably, given the uncertain nature of the dirt inside the coffee purifier and the difficulty in cleaning it, coupled with the presence of some descaling agent residue in the water system, it is necessary to re-energize the coffee valve 221 and repeat the aforementioned cycle at least twice to ensure that the water system is cleaned with pure water at least twice. This satisfies the descaling requirement of the coffee purifier while also ensuring its safety for reuse.

[0237] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A coffee net drink system characterized by, The coffee purification system is applied to coffee purifiers and includes: The water inlet circuit includes an inlet pipe and a water pump, a buffer noise reduction device, and a first pressure relief device installed on the inlet pipe. Along the water flow direction of the inlet pipe, the buffer noise reduction device and the first pressure relief device are located downstream of the water pump. The buffer noise reduction device buffers the water flow passing through it, and the first pressure relief device relieves pressure on the pipeline downstream of the water pump. An extraction water path includes an extraction tube, a second pressure relief component sequentially arranged along the water flow direction of the extraction tube, and an extraction device. The extraction tube is connected to the water inlet pipe. The water pump is used to cooperate with the extraction water path to prepare coffee. The second pressure relief component is used to relieve pressure in the extraction water path. A water collection device is connected to the first pressure relief component and the second pressure relief component respectively, and is used to collect the fluid generated by the pressure relief of the first pressure relief component or the second pressure relief component.

2. The coffee pod system of claim 1, wherein, The buffer noise reduction component includes: A buffer noise reduction shell, connected to the water inlet pipe, and having a buffer cavity communicating with the water inlet pipe; and An elastic diaphragm is disposed within the buffer cavity to buffer the liquid flowing through the buffer noise reduction element.

3. The coffee pod system of claim 1, wherein, The buffer noise reduction component has a buffer flow channel connected to the water inlet pipe, and the buffer flow channel is arranged in a spiral shape.

4. The coffee pod system of claim 1, wherein, The buffer noise reduction component includes a first pipe section, a buffer pipe section, and a second pipe section connected sequentially along the water flow direction, wherein the diameter of the buffer pipe section is larger than the diameter of the first pipe section and the second pipe section.

5. The coffee purification system as described in claim 1, characterized in that, The outer surface of the water pump and / or the buffer noise reduction component is provided with an elastic layer.

6. The coffee purification system as described in claim 1, characterized in that, The first pressure relief component includes: The mechanical pressure relief valve has both its outlet and inlet ends connected to the inlet pipe. The mechanical pressure relief valve has a first pressure relief port. When the pipeline pressure between the water pump and the extraction device is greater than the preset pressure, the mechanical pressure relief valve opens the first pressure relief port to release pressure.

7. The coffee purification system as described in claim 6, characterized in that, The first pressure relief component further includes a first pressure relief pipe, which connects the first pressure relief port to the water receiving device; And / or, the preset pressure is not less than 0.9 MPa.

8. The coffee purification system as described in claim 6, characterized in that, The mechanical pressure relief valve is equipped with a check structure, which is used to prevent water from flowing back from the outlet end to the inlet end; And / or, the first pressure relief port is also used to discharge air from the water inlet passage when the water pump is pumping water.

9. The coffee purification system as described in claim 6, characterized in that, The second pressure relief component includes: A coffee valve is provided in the extraction tube. The coffee valve has an inlet, an outlet and a second pressure relief port. The inlet is connected to the inlet pipe and the outlet is connected to the extraction device. When the coffee valve is in the open state, the inlet is connected to the outlet but not to the second pressure relief port. When the coffee valve is closed, the second pressure relief port is connected to the water outlet but not to the water inlet, in order to relieve pressure on the extraction device.

10. The coffee purification system as described in claim 9, characterized in that, The coffee purification system also includes: The pressurized instant heating module has an inlet end connected to the water pump via the inlet pipe and an outlet end connected to the extraction pipe. During operation, it is used to heat the water flowing into the pressurized instant heating module instantly, and the water pressure that the pressurized instant heating module can withstand is not less than the water pressure when the extraction water circuit extracts coffee.

11. The coffee purification system as described in claim 10, characterized in that, The pressurized instant heating module includes a thick film heating tube, which can withstand a water pressure of not less than 0.9 MPa.

12. The coffee purification system as described in claim 10, characterized in that, The pressurized instant heating module includes: An inlet water temperature sensor is installed at the inlet end of the pressurized instant heating module; and, A water temperature sensor is installed at the water outlet of the pressurized instant heating module.

13. The coffee purification system as described in claim 10, characterized in that, The coffee valve can withstand a water pressure of no less than 2.0 MPa; And / or, the coffee valve can withstand a water temperature of not less than 100°C.

14. The coffee purification system as described in claim 10, characterized in that, The second pressure relief component also includes: The second pressure relief pipe connects to the second pressure relief port and the water receiving device.

15. The coffee purification system as described in claim 14, characterized in that, The second pressure relief pipe is a heat-resistant flexible hose; And / or, the second pressure relief pipe can withstand a water temperature of not less than 100°C.

16. The coffee purification system as described in claim 10, characterized in that, The coffee purification system also includes: The water outlet path is connected to the pressurized instant heating module, and either the water outlet path or the extraction water path is connected to the pressurized instant heating module.

17. The coffee purification system as described in claim 16, characterized in that, The water inlet pipe includes a first water inlet pipe and a second water inlet pipe, both of which are connected to the pressurized instant heating module; The water pump includes a water supply pump installed on the first water inlet pipe and an extraction water pump installed on the second water inlet pipe. The water pressure of the extraction water pump is greater than that of the water supply pump. The water supply pump outputs water through the pressurized instant heating module and the water outlet circuit, and the extraction water pump prepares coffee through the pressurized instant heating module and the extraction water circuit. The extraction water pump, the buffer noise reduction component, and the first pressure relief component are sequentially arranged in the second water inlet pipe along the water flow direction of the second water inlet pipe.

18. The coffee purification system as described in claim 17, characterized in that, The water inlet channel also includes: A check valve is installed between the water supply pump and the pressurized instant heating module.

19. The coffee purification system as described in claim 18, characterized in that, The check valve includes either a mechanical check valve or a solenoid valve.

20. The coffee purification system as described in claim 17, characterized in that, The coffee purification system also includes: The flow meter is installed on the second inlet pipe; or, it is installed on the common section of the first inlet pipe and the second inlet pipe.

21. The coffee purification system as described in claim 17, characterized in that, The water outlet path includes a water outlet pipe connected to the pressurized instant heating module, and a water outlet valve installed on the water outlet pipe; The coffee valve and the extraction device are sequentially arranged in the extraction tube along the water flow direction; In this configuration, the water outlet valve and the coffee valve are selectively connected. The water supply pump, through the pressurized instant heating module, cooperates with the connected water outlet valve to supply water. The extraction water pump, through the pressurized instant heating module, cooperates with the connected coffee valve and the extraction device to prepare coffee.

22. The coffee purification system as described in claim 1, characterized in that, The coffee purification system also includes: Pure water system; and The pure water tank has its inlet end connected to the pure water production circuit and its outlet end connected to the inlet end of the inlet pipe. Alternatively, the coffee purification system may further include a pure water supply path, and the water receiving device has an inlet end, an outlet end and a receiving end. The inlet end of the water receiving device is connected to the pure water supply path, the outlet end of the water receiving device is connected to the inlet end of the inlet pipe, and the receiving end of the water receiving device is connected to the first pressure relief component and the second pressure relief component respectively.

23. The coffee purification system as described in claim 22, characterized in that, The pure water tank includes: A low water level detection device, installed on the pure water tank, is used to detect the lowest water level in the pure water tank; and, A high water level detection device is installed on the pure water tank to detect the highest water level in the pure water tank.

24. A coffee purifier, characterized in that, include: The outer casing has a mounting cavity; as well as, The coffee purification system as described in any one of claims 1-23 is installed within the mounting cavity.

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