Coffee purification system and coffee purifier

Abstract

This application discloses a coffee purification system and a coffee purifier. The coffee purification system includes a water tank, a filter assembly, a water inlet path, a pressurized instant heating module, a first water outlet path, a second water outlet path, an extraction path, and a pressure relief assembly. The water inlet of the filter assembly is connected to the water outlet of the water tank and has a pure water outlet. The water inlet path includes an inlet pipe and a water pump mounted on the inlet pipe, which is connected to the pure water outlet. The pressurized instant heating module is connected to the water pump via the inlet pipe. The first water outlet path is connected to the inlet pipe. The second water outlet path and the extraction path are both connected to the pressurized instant heating module, and one of them is selectively connected to the pressurized instant heating module. The pressure relief assembly is located between the water pump and the pressurized instant heating module and is connected to the pure water outlet and / or the water tank. This application embodiment achieves pressure stability during coffee extraction by incorporating the pressure relief assembly.

Description

Technical Field

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

[0002] In coffee machines, extraction pressure is a core parameter that determines the quality of extracted coffee. Related technologies primarily adjust extraction pressure by changing the coffee grounds particle size, extraction pump specifications, and extraction chamber orifice diameter. However, this approach suffers from inaccurate pressure control and instability, thus affecting the quality of the coffee extracted by the machine. Summary of the Invention

[0003] This application provides a coffee purification system and a coffee purifier, which aims to stabilize the pressure during coffee extraction to improve the quality of the coffee extracted by the coffee purification system.

[0004] The first aspect of this application provides a coffee purification system applied to a coffee purifier. The system includes a water tank, a filter assembly, a water inlet path, a pressurized instant heating module, a first water outlet path, a second water outlet path, an extraction path, and a pressure relief assembly. The inlet end of the filter assembly is connected to the outlet end of the water tank and has a pure water outlet. The water inlet path includes an inlet pipe and a water pump mounted on the inlet pipe. The inlet pipe is connected to the pure water outlet. The pressurized instant heating module is connected to the water pump via the inlet pipe. The first water outlet path is connected to the inlet pipe and is used to dispense at least cold water. The second water outlet path and the extraction path are both connected to the pressurized instant heating module, and one of them is selectively connected to the pressurized instant heating module. The pressure relief assembly is disposed between the water pump and the pressurized instant heating module and is connected to the pure water outlet and / or the water tank.

[0005] In some embodiments, the pressure relief assembly includes a first pressure relief pipe and a first pressure relief valve. The first pressure relief pipe is connected to the outlet of the water pump and the pure water outlet or the water tank. The first pressure relief valve is disposed on the first pressure relief pipe to allow the water released from the water pump to flow to the pure water outlet or the water tank. The opening degree of the first pressure relief valve can be adjusted according to the pressure required for coffee extraction in the extraction water circuit.

[0006] In some embodiments, the pressure relief assembly further includes a second pressure relief pipe, a pressure relief solenoid valve, and a second pressure relief valve. The second pressure relief pipe is connected to the water pump and the pure water outlet or the water tank. The pressure relief solenoid valve is disposed on the second pressure relief pipe. The second pressure relief valve is disposed on the second pressure relief pipe and along the water flow direction. The second pressure relief valve is located downstream of the pressure relief solenoid valve. The pressure relief pressure of the second pressure relief valve is less than the pressure relief pressure of the first pressure relief valve.

[0007] In some embodiments, the water inlet pipe includes a first water inlet pipe and a second water inlet pipe. The first water inlet pipe includes a first hot water inlet pipe and a cold water inlet pipe. Both the first hot water inlet pipe and the cold water inlet pipe are connected to the pure water outlet. The second water inlet pipe is connected to the first hot water inlet pipe and the cold water inlet pipe, and is also connected to the pressurized instant heating module. The first water outlet is connected to a common section of the cold water inlet pipe or the first hot water inlet pipe and the cold water inlet pipe. The water pump is mounted on the second water inlet pipe and is located upstream of the pressure relief assembly along the water flow direction of the second water inlet pipe.

[0008] In some embodiments, the coffee purification system further includes an inlet solenoid valve, a refrigeration module, and a cold water outlet solenoid valve arranged sequentially along the water flow direction of the cold water inlet pipe. The cold water outlet solenoid valve is connected to the first hot water inlet pipe through the cold water inlet pipe, and the refrigeration module is also connected to the first water outlet path.

[0009] In some embodiments, the first water outlet path includes a cold water outlet pipe, a cold water pump, and a first flow meter. The cold water outlet pipe is connected to the refrigeration module. The cold water pump is installed on the cold water outlet pipe. The first flow meter is installed on the cold water outlet pipe and is located downstream of the cold water pump along the water flow direction of the cold water outlet pipe.

[0010] In some embodiments, the coffee purification system further includes a cold water return pipe and a cold water return pump. The cold water return pipe is connected to the refrigeration module and the filter assembly. The cold water return pump is disposed on the cold water return pipe to return the cold water in the refrigeration module to the filter assembly.

[0011] In some embodiments, the coffee purification system further includes a room temperature water outlet pipe, a room temperature water solenoid valve, and a second flow meter. The room temperature water outlet pipe is connected to the pure water outlet. The room temperature water solenoid valve is installed on the room temperature water outlet pipe, and the second flow meter is installed on the room temperature water outlet pipe and located downstream of the room temperature water solenoid valve.

[0012] In some embodiments, the second water inlet pipe includes a second hot water inlet pipe and an extraction water inlet pipe. The second hot water inlet pipe is connected to the first hot water inlet pipe, and the extraction water inlet pipe is connected to both the first hot water inlet pipe and the cold water inlet pipe. The water pump includes a water supply pump disposed on the second hot water inlet pipe and an extraction water pump disposed on the extraction water inlet pipe. The water supply pump outputs water through the pressurized instant heating module and the second water outlet circuit. The extraction water pump prepares coffee through the pressurized instant heating module and the extraction water circuit. The pressure relief component is disposed between the extraction water pump and the pressurized instant heating module.

[0013] In some embodiments, the second water inlet pipe further includes a check valve, which is disposed on the second hot water inlet pipe and located between the water supply pump and the pressurized instant heating module; and / or, the second water inlet pipe further includes a buffer noise reduction component, which is disposed on the extraction water inlet pipe and located between the extraction water pump and the pressurized instant heating module.

[0014] In some embodiments, the coffee purification system further includes a negative pressure valve and a third flow meter. The negative pressure valve is disposed on the first hot water inlet pipe, and the third flow meter is disposed on the first hot water inlet pipe and is located downstream of the negative pressure valve along the water flow direction. Alternatively, the third flow meter is disposed on the common section of the first hot water inlet pipe and the cold water inlet pipe.

[0015] In some embodiments, the first water outlet path includes a cold water outlet pipe and a cold water pump. The cold water outlet pipe is connected to the outlet end of the third flow meter, and the cold water pump is installed on the cold water outlet pipe and cooperates with the cold water outlet pipe to discharge water.

[0016] In some embodiments, the second 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 extraction water path includes an extraction pipe connected to the pressurized instant heating module, and a coffee valve and an extraction device disposed sequentially on the extraction pipe along the water flow direction, wherein the water outlet valve and the coffee valve are selectively connected, the water supply pump outputs water through the pressurized instant heating module in cooperation with the connected water outlet valve, and the extraction water pump prepares coffee through the pressurized instant heating module in cooperation with the connected coffee valve and the extraction device.

[0017] In some embodiments, the water outlet valve and the coffee valve can be replaced by a three-way valve, the inlet of which is connected to the pressurized instant heating module, and the two outlets of which are connected to the water outlet pipe and the extraction pipe, respectively.

[0018] In some embodiments, the water tank includes a concentrate tank and a raw water tank, the raw water tank and the concentrate tank being spaced apart, and the outlet of the raw water tank being connected to the inlet of the filter assembly.

[0019] In some embodiments, the filtration assembly further includes a first-stage filter and a second-stage filter. The first-stage filter is connected to the outlet of the raw water tank and includes a pre-filter and a post-filter, the post-filter having the pure water outlet. The second-stage filter is connected to the pre-filter and the post-filter, and also to the concentrate tank to direct wastewater to the concentrate tank.

[0020] In some embodiments, the coffee purification system further includes a steam drain pipe and a steam drain valve. The steam drain pipe is connected to the extraction water circuit and the concentrate tank. The steam drain valve is disposed on the steam drain pipe to discharge steam from the steam drain pipe to the concentrate tank.

[0021] In some embodiments, the coffee purification system further includes a steam water circuit, which includes a steam pipe and a steam valve disposed on the steam pipe, the steam pipe being connected to the extraction water circuit.

[0022] A second aspect of this application provides a coffee purifier, which includes a housing and the coffee purification system described in any one of the above embodiments. The housing has a mounting cavity, and the coffee purification system is installed in the mounting cavity.

[0023] The coffee purification system in this embodiment can supply cold water, room temperature water, hot water, boiling water, hot brewing, room temperature brewing, and cold brewing, thus solving the problem of limited functionality in traditional coffee purifiers. Furthermore, by installing a pressure relief component between the water pump and the pressurized instant heating module, the component can relieve pressure in the pipeline to meet the different extraction pressures required by the system during coffee extraction and maintain the system in a stable pressure environment. This ensures stable pressure during coffee extraction, thereby improving the quality of the coffee extracted by the purification system. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is one of the water circuit diagrams of a coffee purification system provided in one embodiment of this application; Figure 2 This is one of the partial water circuit diagrams of a coffee purification system provided in one embodiment of this application; Figure 3 This is a second schematic diagram of the water circuit of a coffee purification system provided in one embodiment of this application; Figure 4 This is the third schematic diagram of the water circuit of a coffee purification system provided in one embodiment of this application; Figure 5 This is the fourth schematic diagram of the water circuit of a coffee purification system provided in one embodiment of this application; Figure 6 This is the fifth schematic diagram of the water circuit of a coffee purification system provided in one embodiment of this application.

[0026] Reference numerals: 1. Water inlet circuit; 11. Water inlet pipe; 111. First water inlet pipe; 1111. First hot water inlet pipe; 1112. Cold water inlet pipe; 1113. Water inlet solenoid valve; 1114. Refrigeration module; 1115. Cold water outlet solenoid valve; 112. Second water inlet pipe; 1121. Second hot water inlet pipe; 1122. Extraction water inlet pipe; 12. Water pump; 121. Water supply pump; 122. Extraction water pump; 14. Check valve; 15. Buffer and noise reduction component; 16. Negative pressure valve; 17. Third flow meter; 18. Pressure relief assembly; 181. First pressure relief pipe; 182. First pressure relief valve; 183. Second pressure relief pipe; 184. Pressure relief solenoid valve; 185. Second pressure relief valve; 2. Extraction water circuit; 21. Extraction tube; 22. Coffee valve; 23. Extraction device; 24. Extraction nozzle; 3. Water tank; 31. Concentrated water tank; 32. Raw water tank; 4. Room temperature water outlet pipe; 41. Room temperature water solenoid valve; 42. Second flow meter; 5. Pressurized instant heating module; 6. Second water outlet path; 61. Water outlet pipe; 62. Water outlet valve; 63. Water outlet nozzle; 7. First water outlet path; 71. Cold water outlet pipe; 72. Cold water pump; 73. First flow meter; 74. Cold water return pipe; 75. Cold water return pump; 8. Filter assembly; 81. First stage filter element; 82. Second stage filter element; 83. Pure water outlet; 9. Steam drain pipe; 91. Steam drain valve; 92. Steam pipe; 93. Steam valve; 94. Steam outlet. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are illustrative of this application and are not intended to limit the scope of this application.

[0028] This application provides a coffee purifier, which is a comprehensive smart home appliance that combines water purification, hot water supply, and coffee extraction functions. It aims to meet users' needs for healthy water quality, convenient water dispensing, and diverse beverage preparation through an integrated design.

[0029] The coffee purifier includes a housing and a coffee purification system. The housing serves as the external structure of the coffee purifier, housing and protecting the internal coffee purification system. For example, the housing has an internal mounting cavity providing space for the coffee purification system and other internal components. The housing can be injection molded using engineering plastics such as ABS and PC, resulting in a lightweight and low-cost structure. Alternatively, the housing can be made of metal (such as stainless steel or aluminum alloy), manufactured through processes like stamping and welding. Metal housings offer a more robust structure, enhancing the product's durability and stability.

[0030] The coffee purification system is the core of a coffee purifier, responsible for functions such as water purification, heating, and coffee extraction.

[0031] The coffee purification system will be described in detail below.

[0032] Please see Figures 1-2 The coffee purification system includes a water tank 3, a filter assembly 8, an inlet water path 1, a pressurized instant heating module 5, a first outlet water path 7, a second outlet water path 6, and an extraction water path 2.

[0033] Specifically, the water tank 3 is used to hold untreated raw water. The inlet end of the filter assembly 8 is connected to the outlet end of the water tank 3 so that the raw water can be filtered into pure water through the filter assembly 8. The filter assembly 8 has a pure water outlet 83, that is, the pure water filtered by the filter assembly 8 flows out from the pure water outlet 83.

[0034] The water inlet circuit 1 includes an inlet pipe 11 and a water pump 12 mounted on the inlet pipe 11. The inlet pipe 11 is connected to a pure water outlet 83. The inlet pipe 11 serves as a channel for guiding water flow, used to transport pure water flowing from the pure water outlet 83 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 arrangement. The inlet pipe 11 can also be PPR (polypropylene random), which has various connection methods (such as heat fusion connection) and good sealing performance to prevent leakage. 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 high-pressure-resistant Teflon tube, PE tube, etc., while 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 tube or a lower-strength plastic tube. The water pump 12 serves as the power source for the water inlet channel 1, and is used to drive the water flow in the water channel.

[0035] The pressurized instant heating module 5 is connected to the water pump 12 through the water inlet pipe 11; that is, when the water pump 12 is working, it can pump the water in the water inlet pipe 11 to the pressurized instant heating module 5. When the pressurized instant heating module 5 is working, it is used to heat the water flowing into the pressurized instant heating module 5 in real time, so that the water in the pressurized instant heating module 5 is heated to the preset temperature. The pressurized instant heating module 5 can adjust the water temperature to different levels to meet the needs of different scenarios, thereby improving the user experience.

[0036] The first water outlet path 7 is connected to the water inlet pipe 11, and is used at least for discharging cold water. It is understood that a cooling module 1114 is installed on the water inlet pipe 11. Pure water flowing from the water inlet pipe 11 is cooled by the cooling module 1114 and becomes cold water. Since the first water outlet path 7 is connected to the water inlet pipe 11, the cold water in the water inlet pipe 11 can flow to the first water outlet path 7. The first water outlet path 7 is also connected to the water outlet 63 to allow the cold water to flow out from the water outlet 63. At this time, since the cold water flows directly from the water inlet pipe 11 to the first water outlet path 7 and then out from the water outlet 63, the cold water does not need to pass through the pressurized instant heating module 5. This ensures the outlet temperature of the cold water and extends the service life of the pressurized instant heating module 5.

[0037] Of course, in some embodiments, since the temperature range of room temperature water is usually between 5°C and 35°C, when the user needs room temperature water, the room temperature water flowing out from the inlet pipe 11 can flow to the first outlet water path 7 and then flow out from the outlet 63. At this time, the room temperature water does not need to pass through the pressurized instant heating module 5.

[0038] Please continue reading. Figures 1-2The second water outlet path 6 and the extraction water path 2 are both connected to the pressurized instant heating module 5, and one of the second water outlet path 6 and the extraction water path 2 is selectively connected to the pressurized instant heating module 5. It is understood that in the coffee purifier system of this application 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 one of the second water outlet path 6 and the extraction water path 2 through system control, so that the coffee purifier of this application has multiple functions.

[0039] In other words, when the user needs room temperature water, the system controls the pressurized instant heating module 5 to shut off, and the pressurized instant heating module 5 is connected to the second water outlet circuit 6, so that the second water outlet circuit 6 outputs room temperature water to the water outlet 63. At this time, the room temperature water needs to pass through the pressurized instant heating module 5, but the pressurized instant heating module 5 is in a closed state. When the user needs hot water, the system controls the pressurized instant heating module 5 to operate at the first power, and the pressurized instant heating module 5 is connected to the second water outlet circuit 6, so that the second water outlet circuit 6 outputs hot water to the water outlet 63. When the user needs boiling water, the system controls the pressurized instant heating module 5 to operate at the second power, and the pressurized instant heating module 5 is connected to the second water outlet circuit 6, so that the second water outlet circuit 6 outputs boiling water. Since the temperature of boiling water is higher than that of hot water, the system controls the pressurized instant heating module 5 to operate at different power levels to speed up the heating time of the water and reduce the user's waiting time.

[0040] When a user wants cold coffee, the pure water flowing from the pure water outlet 83 passes through the cooling module 1114 and flows to the pressurized instant heating module 5. At this time, the pressurized instant heating module 5 is closed, and it is connected to the extraction water path 2, allowing cold water to flow out along the extraction water path 2 for cold extraction of coffee. When a user wants hot coffee, the system controls the pressurized instant heating module 5 to operate at the third power level, and it is connected to the extraction water path 2, allowing hot water to flow out along the extraction water path 2 for hot extraction of coffee. In the room temperature extraction scenario, the system controls the pressurized instant heating module 5 to be closed, and the water flowing through the pressurized instant heating module 5 is not heated before entering the extraction water path 2, using room temperature water for room temperature extraction of coffee. It should be noted that when performing cold extraction of coffee, the pipeline needs to be pre-cooled to ensure the low temperature required for cold extraction.

[0041] In related technologies, if you want to make cold coffee, you need to add ice cubes to a water cup in advance, and then pour the extracted coffee into the water cup to achieve the effect of cold coffee. However, since the amount of ice cubes added by the user each time is uncertain, the quality of cold coffee cannot be guaranteed. In addition, the user needs to add extra ice cubes every time cold coffee is made, which affects the user experience.

[0042] Therefore, this embodiment of the application can improve the quality of cold coffee extraction and enhance the user experience by setting a refrigeration module 1114 in the coffee purification system.

[0043] Furthermore, the pressure-bearing instant heating module 5 in this embodiment of the application adopts instant heating technology, which can heat the water to a preset temperature during the rapid flow of water, avoiding the repeated heating of water storage heating devices in related technologies, which leads to water quality degradation and low pressure-bearing capacity.

[0044] Therefore, the pressurized instant heating module 5 further possesses pressure-bearing capacity, and the water pressure it can withstand is no less than the water pressure during coffee extraction in the extraction water circuit 2. Understandably, the water pressure is typically high during coffee extraction, and the pressurized instant heating module 5 can still operate stably in high-temperature environments, ensuring that the heating function has a heat resistance of no less than 100℃, thus guaranteeing the reliability and safety of the pressurized instant heating module 5 in high-temperature operating environments. Furthermore, at least one of the outlet and inlet ends of the pressurized instant heating module 5 is equipped with a temperature sensor to monitor the water temperature entering and exiting the module in real time, collecting data for adjusting the heating power of the 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 the outlet water temperature meets the requirements; the outlet water temperature sensor is located at the outlet end of the pressurized instant heating module 5 and is used to provide real-time feedback on the water temperature at the outlet end of the module 5. By comparing it with the preset temperature value, the water temperature is precisely controlled within the preset range, ensuring water temperature stability.

[0045] The extraction pressure required for brewing cold coffee differs from that for brewing hot coffee in a coffee purification system. When brewing cold coffee, the extraction pressure is in the low-pressure range, less than 5 bar; when brewing hot coffee, the extraction pressure is in the high-pressure range, between 9 and 11 bar. Related technologies primarily adjust the extraction pressure by changing the coffee powder particle size, extraction pump specifications, and extraction chamber orifice diameter. However, this approach suffers from inaccurate pressure control and instability, thus affecting the quality of the extracted coffee.

[0046] Therefore, to resolve the above issues, please continue reading. Figures 1-2 The coffee purification system in this embodiment also includes a pressure relief component 18. It is understood that the pressure relief component 18 can relieve pressure in the pipelines within the coffee purification system to prevent excessively high or low pressure within the system, thereby maintaining the system in a stable pressure environment. Furthermore, when an abnormal pressure occurs in the coffee purification system, the pressure relief component 18 can automatically open or close to relieve pressure in the system, thereby preventing damage to components within the system and enhancing the stability and safety of the coffee purification system.

[0047] It is understandable that the extraction pressure required for preparing cold coffee and hot coffee in a coffee purification system differs, thus requiring a change in the internal extraction pressure. However, if the extraction pressure is too high or too low, it will affect the quality of the coffee extraction. Therefore, in this embodiment, a pressure relief component 18 is installed between the water pump 12 and the pressurized instant heating module 5, and the pressure relief component 18 is connected to at least one of the pure water outlet 83 and the water tank 3. Thus, when the user needs to prepare cold coffee, the pressure relief component 18 maintains the extraction pressure within a low-pressure extraction range. For example, the extraction pressure at this time can be 4 bar to meet the extraction pressure required for cold brewing, and the water flowing out of the pressure relief outlet flows into the pure water outlet 83 or the water tank 3. When the user needs to prepare hot coffee, the pressure relief component 18 maintains the extraction pressure within the optimal extraction range. For example, the optimal extraction pressure can be 9 bar to meet the extraction pressure required for hot brewing, and the water flowing out of the pressure relief outlet flows into the pure water outlet 83 or the water tank 3.

[0048] Furthermore, a pressure relief component 18 is installed after the water pump 12 to maintain the extraction pressure required for hot extraction at 9 bar during system hot extraction, that is, to maintain the pressure value of the pipeline from the water pump 12 to the pressurized instant heating module 5 at 9 bar, which can reduce the risk of water leakage in the system pipeline.

[0049] The coffee purification system in this embodiment can supply cold water, room temperature water, hot water, boiling water, hot brewing, room temperature brewing, and cold brewing, thus solving the problem of limited functionality in traditional coffee purifiers. Furthermore, by installing a pressure relief component 18 between the water pump 12 and the pressurized instant heating module 5, the pressure relief component 18 can relieve pressure in the pipeline to meet the different extraction pressures required by the system during coffee extraction and maintain the system in a stable pressure environment, thereby achieving pressure stability during coffee extraction and improving the quality of the coffee extracted by the coffee purification system.

[0050] Please see Figure 2 as well as Figure 3 In some embodiments, the pressure relief assembly 18 includes a first pressure relief pipe 181 and a first pressure relief valve 182. The first pressure relief pipe 181 is connected to the outlet of the water pump 12 and the pure water outlet 83 or the water tank 3, that is, the inlet of the first pressure relief pipe 181 is connected to the outlet of the water pump 12, and the outlet of the first pressure relief pipe 181 is connected to the pure water outlet 83 or the water tank 3; the first pressure relief valve 182 is disposed on the first pressure relief pipe 181 so as to allow the water discharged from the water pump 12 to flow into the pure water outlet 83 or the water tank 3 through the first pressure relief valve 182. For example, when the coffee purification system is extracting hot coffee, if the extraction pressure is detected to be greater than 9 bar, the first pressure relief valve 182 starts to release pressure to release the water after the water pump 12 into the pure water outlet 83 or the water tank 3.

[0051] Furthermore, the opening degree of the first pressure relief valve 182 can be adjusted according to the pressure value required when extracting coffee through the extraction water circuit. That is, the system can set the opening degree of the first pressure relief valve 182 within the preset extraction pressure value required for cold and hot extraction, so that if the preset extraction pressure value is exceeded during cold or hot extraction, the first pressure relief valve 182 opens to relieve pressure in the pipeline and ensure the stability of pressure during coffee extraction.

[0052] For example, when the coffee purification system is extracting hot coffee, if the extraction pressure is detected to be greater than 9 bar, the first pressure relief valve 182 starts to release pressure, thereby releasing the water after the water pump 12 to the pure water outlet 83 or the water tank 3. For example, when the coffee purification system is extracting cold coffee, if the extraction pressure is detected to be greater than 4 bar, the first pressure relief valve 182 starts to release pressure, thereby releasing the water after the water pump 12 to the pure water outlet 83 or the water tank 3. It should be noted that the first pressure relief valve 182 can be a mechanical pressure relief valve or a solenoid valve, and this application embodiment does not specifically limit it in this way.

[0053] Please see Figures 4-6 In some embodiments, the pressure relief assembly 18 further includes a second pressure relief pipe 183, a pressure relief solenoid valve 184, and a second pressure relief valve 185. The second pressure relief pipe 183 is connected to the water pump 12 and the pure water outlet 83 or the water tank 3, that is, the inlet end of the second pressure relief pipe 183 is connected to the outlet end of the water pump 12, and the outlet end of the second pressure relief pipe 183 is connected to the pure water outlet 83 or the water tank 3. The pressure relief solenoid valve 184 is disposed on the second pressure relief pipe 183, and the second pressure relief valve 185 is disposed on the second pressure relief pipe 183. Along the water flow direction, the second pressure relief valve 185 is located downstream of the pressure relief solenoid valve 184. The pressure relief pressure of the second pressure relief valve 185 is less than the pressure relief pressure of the first pressure relief valve 182.

[0054] Understandably, since the extraction pressure required for preparing cold coffee differs from that for hot coffee, a first pressure relief valve 182 is used to relieve pressure during hot extraction, and a second pressure relief valve 185 is used to relieve pressure during cold extraction to facilitate timely pressure relief in the pipeline and maintain stable extraction pressure. Specifically, when the coffee purification system is extracting hot coffee, if the detected extraction pressure exceeds 9 bar, the first pressure relief valve 182 begins to release pressure, depressurizing the water after pump 12 to the pure water outlet 83 or the water tank 3. When the coffee purification system is extracting coffee, if the detected extraction pressure exceeds 4 bar, the pressure relief solenoid valve 184 opens, and the second pressure relief valve 185 operates to relieve pressure in the pipeline, thereby maintaining the cold extraction pressure at 4 bar. It should be noted that the aforementioned pressure relief solenoid valve 184 needs to be opened and closed by the control module. That is, when the pressure value in the pipeline is detected to be greater than 4 bar, the control module controls the pressure relief solenoid valve 184 to start. The aforementioned second pressure relief valve 185 can be a mechanical pressure relief valve or a solenoid valve. This application embodiment does not specifically limit it in this regard.

[0055] The first pressure relief valve 182 and the second pressure relief valve 185 mentioned above both have a backflow prevention function, which can prevent water that has been depressurized to the pure water outlet 83 or the water tank 3 from flowing back to the water pump 12 or the pressurized instant heating module 5 through the first pressure relief pipe 181 and the second pressure relief pipe 183.

[0056] In addition, in some embodiments, in order to ensure that the extraction pressure during cold extraction is within the low-pressure extraction range, the pressure regulator on the water inlet pipe 11 can be turned on simultaneously when the system is executing the cold extraction mode, so as to ensure that the cold extraction is maintained within the low-pressure extraction range.

[0057] Please see Figure 1 as well as Figure 4 In some embodiments, the water inlet pipe 11 includes a first water inlet pipe 111 and a second water inlet pipe 112.

[0058] Specifically, the first water inlet pipe 111 includes a first hot water inlet pipe 1111 and a cold water inlet pipe 1112. Both the first hot water inlet pipe 1111 and the cold water inlet pipe 1112 are connected to the pure water outlet 83, that is, the pure water flowing out of the pure water outlet 83 can flow to either the first hot water inlet pipe 1111 or the cold water inlet pipe 1112.

[0059] The second water inlet pipe 112 is connected to the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, and the second water inlet pipe 112 is connected to the pressurized instant heating module 5; that is, one end of the second water inlet pipe 112 is connected to the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, and the other end of the second water inlet pipe 112 is connected to the pressurized instant heating module 5. The water pump 12 is installed on the second water inlet pipe 112. Along the water flow direction of the second water inlet pipe 112, the water pump 12 is located upstream of the pressure relief component 18 so that the pressure relief component 18 can relieve the pressure of the pipeline after the water pump 12 and maintain the stability of the system extraction pressure.

[0060] Understandably, when a user needs hot water, the spout 63 opens, controlling the water pump 12 and the pressurized instant heating module 5 to operate. Pure water flowing from the pure water outlet 83 passes through the first hot water inlet pipe 1111 and the second inlet pipe 112 before flowing into the pressurized instant heating module 5 for heating. The heated pure water then flows out from the spout 63 through the second outlet water path 6, thus providing hot water. When a user needs to prepare cold brew coffee, pure water flowing from the pure water outlet 83 passes through the cold water inlet pipe 1112 and the second inlet pipe 112 before flowing into the pressurized instant heating module 5. At this time, the extraction water path 2 is connected to the pressurized instant heating module 5, allowing cold water to flow into the extraction water path 2 and enabling cold extraction of coffee. When a user needs cold water, the spout 63 opens, and pure water flowing from the pure water outlet 83 passes through the cold water inlet pipe 1112 and the first outlet water path 7 before flowing out from the spout 63, thus providing cold water. At this time, the first water outlet 7 is connected to the cold water inlet pipe 1112.

[0061] This application embodiment separates the water path for preparing cold water from the water path for preparing hot water or room temperature water by setting a first hot water inlet pipe 111 and a cold water inlet pipe 1112 on the first water inlet pipe 111, so as to avoid the temperature of cold water being affected. In this way, the quality of cold brew or cold water prepared by the coffee purifier can be improved.

[0062] Please see Figure 4 In some other embodiments, the first water outlet 7 is connected to a common section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112; that is, the common section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112 is connected to the second inlet pipe 112, and the common section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112 is also connected to the first water outlet 7. In this way, when the user needs cold water, the water outlet 63 is opened, and the pure water flowing out from the pure water outlet 83 needs to pass through the common section of the cold water inlet pipe 1112, the first hot water inlet pipe 1111 and the cold water inlet pipe 1112 before flowing to the first water outlet 7 and flowing out from the water outlet 63.

[0063] Please continue reading. Figure 4In some embodiments, the coffee purification system further includes an inlet solenoid valve 1113, a refrigeration module 1114, and a cold water outlet solenoid valve 1115 arranged sequentially along the water flow direction of the cold water inlet pipe 1112. One end of the inlet solenoid valve 1113 is connected to the pure water outlet 83, and the other end is connected to the refrigeration module 1114. The cold water outlet solenoid valve 1115 is connected to the outlet end of the refrigeration module 1114, and is connected to the first hot water inlet pipe 1111 via the cold water inlet pipe 1112. Thus, when a user needs to prepare cold coffee, The inlet solenoid valve 1113 is opened so that pure water from the pure water outlet 83 flows into the cold water inlet pipe 1112 and then into the refrigeration module 1114. The refrigeration module 1114 is used to refrigerate the pure water so that cold water flows out from the outlet of the refrigeration module 1114. At this time, the cold water outlet solenoid valve 1115 is opened so that the cold water flows into the pressurized instant heating module 5 after passing through the cold water inlet pipe 1112, the first hot water inlet pipe 1111 and the second inlet pipe 112. The pressurized instant heating module 5 is connected to the extraction water circuit 2 so that the cold water in the pressurized instant heating module 5 flows into the extraction water circuit 2 and the cold water is used to prepare cold brew coffee.

[0064] The refrigeration module 1114 is used to turn pure water into cold water and ice cubes, and the type of refrigeration module 1114 is not specifically limited in this embodiment. For example, the refrigeration module 1114 may be an ice chamber assembly or a refrigeration compressor system, etc., and has an internal ice water tank capable of storing cold water and ice cubes, so that the coffee purification system can quickly dispense cold water. When the water level in the ice water tank is low, the control module can control the inlet solenoid valve 1113 to open, allowing pure water to flow into the refrigeration module 1114 through the cold water inlet pipe 1112; when the water level in the ice water tank is high or the coffee purification system does not require cold water, the control module controls the inlet solenoid valve 1113 to close.

[0065] It should be noted that the embodiments of this application do not specifically limit the capacity of the ice water tank. For example, the capacity of the ice water tank can be 0.5L, 0.6L, 0.8L, 1L, etc. Furthermore, the shape of the ice blocks produced by the ice water tank can be square, spherical, bullet-shaped, etc. The method of removing the ice blocks can be by mechanically rotating them out of the ice water tank; the embodiments of this application do not specifically limit this method.

[0066] Please see Figure 2 as well as Figure 4 Furthermore, the cooling module 1114 is also connected to the first water outlet 7. It is understood that the water outlet of the cooling module 1114 can also be connected to the first water outlet 7, so that when the user needs cold water, the cold water in the cooling module 1114 can flow into the first water outlet 7 and flow out from the water outlet 63 through the first water outlet 7.

[0067] Please see Figure 2 In some embodiments, the first water outlet path 7 includes a cold water outlet pipe 71, a cold water pump 72, and a first flow meter 73. The cold water outlet pipe 71 is connected to the refrigeration module 1114; the cold water pump 72 is mounted on the cold water outlet pipe 71; and the first flow meter 73 is mounted on the cold water outlet pipe 71, located downstream of the cold water pump 72 along the water flow direction of the cold water outlet pipe 71. It is understood that when a user needs cold water, the water outlet 63 is opened, and the cold water pump 72 operates. Under the action of the cold water pump 72, cold water in the refrigeration module 1114 can be pumped into the cold water outlet pipe 71, flows through the first flow meter 73, and then flows out from the water outlet 63, thus realizing the function of the coffee purification system in preparing cold water. The first flow meter 73 is used to monitor the cold water output in real time to improve the precise control of water usage in the coffee purification system.

[0068] Since the chilled water tank in the refrigeration module 1114 can store chilled water, and if the chilled water is stored in the chilled water tank for a long time, it will affect the water quality. Therefore, please continue reading. Figure 2 In some embodiments, the coffee purification system also includes a cold water return pipe 74 and a cold water return pump 75.

[0069] Specifically, the cold water return pipe 74 is connected to the refrigeration module 1114 and the filter assembly 8. That is, one end of the cold water return pipe 74 is connected to the water outlet of the refrigeration module 1114, and the other end is connected to the filter assembly 8. The cold water return pump 75 is installed on the cold water return pipe 74 to return the cold water in the refrigeration module 1114 to the filter assembly 8. It can be understood that the coffee purification system can be set with a preset cold water return command and sent to the control module periodically. The control module is electrically connected to the cold water return pump 75 to control the cold water return pump 75 to open, so that the cold water in the refrigeration module 1114 flows into the cold water return pipe 74 and then into the filter assembly 8. The filter assembly 8 filters and sterilizes the cold water, thereby improving the water quality. Furthermore, after the cold water in the refrigeration module 1114 flows into the filter assembly 8 through the cold water return pipe 74, the control module can control the inlet solenoid valve 1113 to open so that the pure water from the pure water outlet 83 flows into the refrigeration module 1114 through the cold water inlet pipe 1112.

[0070] Of course, in some embodiments, the refrigeration module 1114 is equipped with a sterilization device to further sterilize the cold water in the ice water tank in a timely manner, so as to ensure the quality of the cold water.

[0071] Please see Figures 1-2In some embodiments, the coffee purification system further includes a room temperature water outlet pipe 4, a room temperature water solenoid valve 41, and a second flow meter 42. The room temperature water outlet pipe 4 is connected to the pure water outlet 83; the room temperature water solenoid valve 41 is installed on the room temperature water outlet pipe 4; the second flow meter 42 is installed on the room temperature water outlet pipe 4, and the second flow meter 42 is located downstream of the room temperature water solenoid valve 41.

[0072] When the user needs room temperature water, the water outlet 63 opens, and the room temperature water solenoid valve 41 opens. This allows pure water from the pure water outlet 83 to flow into the room temperature water outlet pipe 4, and then through the room temperature water solenoid valve 41 and the second flow meter 42 before flowing back to the water outlet 63, thus enabling the coffee purification system to dispense room temperature water. The second flow meter 42 is used to monitor the flow rate of room temperature water in real time, improving the precise control of water usage in the coffee purification system.

[0073] Please continue reading. Figures 1-2 In some embodiments, the second water inlet pipe 112 includes a second hot water inlet pipe 1121 and an extraction water inlet pipe 1122. The second hot water inlet pipe 1121 is connected to the first water inlet pipe 111 and is also connected to the pressurized instant heating module 5; the extraction water inlet pipe 1122 is connected to both the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, and is also connected to the pressurized instant heating module 5; the water pump 12 includes a water supply pump 121 respectively installed on the second hot water inlet pipe 1121 and an extraction water pump 122 installed on the extraction water inlet pipe 1122. The water pressures of the water supply pump 121 and the extraction water pump 122 are different, and the water pressure of the extraction water pump 122 can be greater than that of the water supply pump 121 to meet the pressure requirements of different functions.

[0074] The water supply pump 121 works in conjunction with the pressurized instant heating module 5 and the second water outlet 6 to deliver water. It can be understood that the water supply pump 121 pumps water through the first hot water inlet pipe 1111 and the second hot water inlet pipe 1121 to the pressurized instant heating module 5, and controls the pressurized instant heating module 5 to output hot or boiling water through the second water outlet 6, flowing to the water outlet 63. This hot or boiling water can be used for daily drinking water, tea brewing, etc. Alternatively, the pressurized instant heating module 5 can be shut off, allowing room temperature water to be output through the second water outlet 6 and flowing to the water outlet 63. In this case, the relatively low water pressure in the water supply pump 121 is sufficient to meet the water pressure requirements of this type of application.

[0075] The extraction water pump 122 works in conjunction with the pressurized instant heating module 5 and the extraction water circuit 2 to prepare coffee. It is understood that the extraction water pump 122 delivers water to the pressurized instant heating module 5 via the extraction inlet pipe 1122, and then the water is used to prepare coffee via the extraction water circuit 2. Because higher pressure is required when extracting hot coffee to fully extract the effective components from the coffee grounds, the higher pumping pressure of the extraction water pump 122 ensures the efficient operation of the hot coffee extraction process. For example, when a user wants cold coffee, cold water flows from the cold water inlet pipe 1112 through the extraction inlet pipe 1122, then flows into the pressurized instant heating module 5, and finally through the extraction water circuit 2 to prepare cold coffee. When a user needs hot or room temperature coffee, room temperature water flows from the first hot water inlet pipe 1111 through the extraction inlet pipe 1122, and then flows into the pressurized instant heating module 5. If hot coffee is to be prepared, the pressurized instant heating module 5 is activated, and hot water is used to prepare the coffee after passing through the extraction water path 2. If room temperature coffee is to be prepared, the pressurized instant heating module 5 is deactivated, and room temperature water is used to prepare the coffee after passing through the extraction water path 2. This satisfies the diverse functional needs of the coffee purifier. However, since the pumping pressure of the extraction water pump 122 differs for preparing cold and hot coffee, the control module can control the extraction water pump 122 using a chopper-based pressure regulation method according to the type of coffee to be prepared. This ensures that the pumping pressure of the extraction water pump 122 meets the needs of different coffees, thereby improving the quality of the coffee prepared by the coffee purifier.

[0076] The pressure relief assembly 18 is located between the extraction water pump 122 and the pressurized instant heating module 5 to relieve pressure on the pipeline after the extraction water pump 122 and maintain the stability of the system extraction pressure. At the same time, it can ensure the stability of the connection between the extraction water inlet pipe 1122 and the pressurized instant heating module 5.

[0077] It should be noted that the embodiments of this application do not specifically limit the types of water supply pump 121 and extraction pump 122. For example, extraction pump 122 can be an electromagnetic pump, plunger pump, positive displacement pump (AC or DC), etc.; water supply pump 121 can be a diaphragm pump, which realizes fluid transportation through the reciprocating motion of an elastic diaphragm and has a reverse check function; that is, the diaphragm of water supply pump 121 and valve plate form a sealing structure with a reverse pressure of not less than 2.0MPa to prevent the high-pressure water in the pressurized instant heating module 5 from flowing back and impacting water supply pump 121, causing damage to the pump body of water supply pump 121; at the same time, the water flow rate of diaphragm pump is greater than or equal to 100ml / min, thereby meeting the daily water supply needs.

[0078] Please see Figure 2In some embodiments, the second water inlet pipe 112 further includes a check valve 14, which is disposed on the second hot water inlet pipe 1121 and located between the water supply pump 121 and the pressurized instant heating module 5. It is understood that the check valve 14 is used to prevent water from flowing back from the pressurized instant heating module 5 into 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 will generate 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, and preventing hot water leakage that could cause equipment damage or safety hazards. At the same time, the check valve 14 can also isolate the water supply pump 121 from the high-pressure environment, prevent the water supply pump 121 from being damaged by reverse high pressure impact, effectively extend the service life of the water supply pump 121, and ensure the stable operation of the hot water and room temperature water supply functions.

[0079] It should be noted that the check valve 14 may include a mechanical check valve or a high-pressure solenoid valve. For example, when the check valve 14 is a mechanical check valve, the mechanical check valve relies on the fluid pressure itself to control the opening and closing of the valve. It has a simple structure, high reliability, requires no additional power supply, and has low cost.

[0080] For example, when the check valve 14 is a high-pressure solenoid valve, the high-pressure solenoid valve controls the opening and closing of the valve through electromagnetic force, which has the advantages of fast response speed and precise control. In a coffee purification system, the type of check valve 14 can be selected according to actual needs and cost considerations to meet different functional requirements.

[0081] Please continue reading. Figure 2 In some embodiments, the second water inlet pipe 112 further includes a buffer noise reduction device 15. The buffer noise reduction device 15 is disposed on the extraction water inlet pipe 1122 and is located between the extraction water pump 122 and the pressurized instant heating module 5. It is understood that the buffer noise reduction device 15 is a device used to reduce the noise of water flow and the extraction water pump 122. It diverts the flow through multiple channels to prevent rapid pressure drop that could cause dissolved air in the water to be rapidly released, effectively reducing high-pressure impact noise and significantly improving the user experience. Simultaneously, the buffer noise reduction device 15 can also suppress vibration harmonics generated by the extraction water pump 122, keeping the flow rate fluctuation of the extraction liquid within a stable range, effectively ensuring the pressure stability of the extraction process, and thus improving the uniformity and flavor profile of the coffee extraction.

[0082] That is, during the coffee extraction process of the coffee purifier, the extraction water pump 122 requires a large pumping pressure, which may generate significant noise, thus affecting the user experience. Therefore, this embodiment of the application provides a buffer noise reduction component 15 downstream of the extraction water pump 122. The buffer noise reduction component 15 is used to buffer the water flow passing through it, thereby reducing the noise generated by the extraction water inlet pipe 1122 and improving the user experience.

[0083] Of course, in some other embodiments, the second water inlet pipe 112 may simultaneously include a check valve 14 and a buffer noise reduction component 15, the principle of which is similar to that of the embodiments described above, and will not be repeated in the embodiments of this application.

[0084] Please continue reading. Figure 2 In some embodiments, the coffee purification system further includes a negative pressure valve 16 and a third flow meter 17. The negative pressure valve 16 is disposed on the first hot water inlet pipe 1111; the third flow meter 17 is disposed on the first hot water inlet pipe 1111, and along the water flow direction, the third flow meter 17 is located downstream of the negative pressure valve 16, or the third flow meter 17 is disposed on the common section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112. It is understood that the negative pressure valve 16 is disposed near the pure water outlet 83, and the negative pressure valve 16 can balance the pressure inside and outside the filter assembly 8 and the downstream components to ensure that the third flow meter 17 can operate stably; the negative pressure valve 16 also has a check valve function to prevent excess pure water from flowing back into the filter assembly 8, which would affect the normal operation of the coffee purification system.

[0085] The third flow meter 17 in this embodiment has two configuration methods. In one configuration, the third flow meter 17 is installed on the first hot water inlet pipe 1111. In this case, the third flow meter 17 is used to detect the amount of water flowing through the first hot water inlet pipe 1111 in real time, so as to control the amount of water used by the coffee purification system to prepare coffee, dispense hot water, or dispense room temperature water. For example, the third flow meter 17 can monitor the amount of water used in the coffee extraction process. In the coffee extraction process, the amount of water used is very important to the taste and quality of the coffee. Therefore, by monitoring and controlling the amount of water used in real time through the third flow meter 17, the optimal effect can be ensured for each extraction. In another configuration, the third flow meter 17 is installed on the common section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, and is used to monitor the amount of water used for hot and cold coffee extraction or the amount of hot or room temperature water dispensed. The system can obtain data on the amount of water used for coffee extraction, the amount of hot or room temperature water dispensed, and the total amount of water used through the third flow meter 17, which facilitates the precise control and management of water used for different functions.

[0086] It should be noted that the first flow meter 73, the second flow meter 42 and the third flow meter 17 mentioned above are key components used to measure and control the amount of water output and coffee extraction water. They are optocoupler flow sensors, which use the switching action of a phototransistor to achieve flow detection.

[0087] Based on the fact that the third flow meter 17 is installed on the common section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, please refer to [reference needed]. Figure 4 In some embodiments, the first water outlet path 7 includes a cold water outlet pipe 71 and a cold water pump 72. The cold water outlet pipe 71 is connected to the outlet end of the third flow meter 17; the cold water pump 72 is installed on the cold water outlet pipe 71, and the cold water pump 72 cooperates with the cold water outlet pipe 71 to output water. It can be understood that when the user needs cold water, the water outlet 63 is opened, and the cold water pump 72 works, so that the cold water in the cooling module 1114 needs to flow through the third flow meter 17 and the cold water pump 72 before flowing out from the water outlet 63. At this time, the third flow meter 17 can also be used to detect the cold water output. Since the third flow meter 17 is installed on the common section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, there is no need to install an additional flow meter on the first water outlet path 7, so as to save costs. Of course, in other embodiments, room temperature water can also flow through the shared section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, and then flow from the first water outlet 7 to the water outlet 63. That is, cold water or room temperature water can flow through the first water outlet 7 to the water outlet 63. At this time, since the room temperature water flows through the shared section of the first hot water inlet pipe 1111 and the cold water inlet pipe 1112, the initial room temperature water temperature is prone to being too high or too low. Therefore, before the system outputs room temperature water, the system can be pre-drained through the components and corresponding control program to ensure the output temperature of room temperature water.

[0088] Please see Figure 2In some embodiments, the second 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; the extraction water 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 disposed sequentially on the extraction pipe 21 along the water flow direction; wherein, the water outlet valve 62 and the coffee valve 221 are selectively connected; that is, by selectively connecting the coffee valve 221 and the water outlet valve 62, the switching of different functions can be realized, and the water supply pump 121 cooperates with the pressurized instant heating module 5 and the connected water outlet valve 62 to output water, and the extraction water pump 122 cooperates with the pressurized instant heating module 5 and the connected coffee valve 221 and the extraction device 23 to prepare coffee. For example, when a user needs hot water, the control module controls the water outlet valve 62 to connect with 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 preparing hot coffee, the control module controls the coffee valve 221 to connect with the pressurized instant heating module 5. The extraction water pump 122 heats the water and pumps it to the pressurized instant heating module 5. The water then enters the extraction device 23 through the coffee valve 221 to complete the coffee making process, and then flows out from the extraction nozzle 24 of the extraction pipe 21.

[0089] 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 of each other 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.

[0090] In some embodiments, the water outlet valve 62 and the coffee valve 221 can be replaced with a three-way valve. The inlet of the three-way valve is connected to the pressurized instant heating module 5, and the two outlets of the three-way valve are connected to the water outlet pipe 61 and the extraction pipe 21, respectively. In this way, when the coffee purifier needs to prepare coffee, the outlet of the three-way valve connected to the extraction pipe 21 is connected; when the coffee purifier supplies hot water or room temperature water, the outlet of the three-way valve connected to the water outlet pipe 61 is connected. This achieves separate control of water flow and uses a single three-way valve to improve the control effect speed and reduce the number of valves, thereby reducing manufacturing costs.

[0091] Please see Figure 1 In some embodiments, the coffee purification system also includes a water tank 3, which includes a concentrated water tank 31 and a raw water tank 32. The raw water tank 32 and the concentrated water tank 31 are separated by a partition in one water tank 3. The raw water tank 32 is used to hold unpurified raw water, and the concentrated water tank 31 is used to hold water containing a high concentration of impurities generated during the filtration process, so that the pure water is not affected by this part of the water, thus ensuring the quality of the pure water.

[0092] The outlet of the raw water tank 32 is connected to the inlet of the filter assembly 8 to filter the water in the raw water tank 32, thereby removing impurities from the water to obtain pure water. Furthermore, in this embodiment, the water tank 3 is divided into a raw water tank 32 and a concentrated water tank 31 by a partition. This prevents concentrated water in the concentrated water tank 31 from flowing into the raw water tank 32, ensuring the normal operation of the filter assembly 8 and extending its service life. It should be noted that this embodiment does not specifically limit the volume of the water tank 3; it can be set according to the actual application scenario.

[0093] In some embodiments, the raw water tank 32 further includes a low water level detection element and a high water level detection element, wherein the low water level detection element and the high water level detection element can be a water level sensing needle or a mechanical float.

[0094] A low-water-level detector is installed on the raw water tank 32 to detect the lowest water level in the tank. A high-water-level detector is installed on the raw water tank 32 to detect the highest water level. That is, the low-water-level and high-water-level detectors work together on the raw water tank 32 to detect the water level. For example, the low-water-level detector is installed near the bottom of the raw water tank 32. When the water level drops to this position, a water replenishment signal is triggered to remind the coffee purifier system or the user to add water. For instance, during continuous coffee brewing, when the water level in the raw water tank 32 reaches a low level, the low-water-level detector sends a signal, and the control module prompts the user to add water or automatically adds water to the raw water tank 32 via the water circuit. The high-water-level detector is installed near the top of the raw water tank 32. When the water level reaches this position, the control module sends a signal to remind the user to stop adding water to the raw water tank 32. It is evident that the aforementioned dual water level detection mechanism not only ensures the safety of the coffee purifier's operation but also avoids water waste by detecting the water level, thereby improving the reliability and user experience of the coffee purifier.

[0095] Please continue reading. Figure 1 In some embodiments, the filter assembly 8 further includes a first-stage filter 81 and a second-stage filter 82.

[0096] The first-stage filter element 81 is connected to the outlet of the raw water tank 32. The first-stage filter element 81 is composed of PP cotton and activated carbon. Its main function is to efficiently remove suspended particles larger than 5μm, residual chlorine, and impurities such as discoloration and odor from the water through a dual mechanism of physical interception and chemical adsorption. The first-stage filter element 81 includes a pre-filter and a post-filter. When the raw water passes through the pre-filter, suspended particles, colloids, and other impurities in the raw water are aggregated into larger flocs, facilitating subsequent filtration and removal. The pre-filter can also effectively intercept large particles such as sediment and rust in the raw water, reducing the burden on the subsequent second-stage filter element 82 and extending its service life.

[0097] The second-stage filter element 82 is connected to both the pre-filter and the post-filter. Understandably, the RO filtration of the second-stage filter element 82 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 relatively pure water. This pure water flows to the post-filter, where it undergoes further filtration to obtain extremely pure water. The post-filter has a pure water outlet 83, ensuring extremely high purity water. This meets users' requirements for healthy, high-quality drinking water and the water quality requirements for coffee extraction, further enhancing the coffee's flavor. It also reduces the risk of scale buildup in the downstream water supply lines (after the pure water outlet 83), extending the lifespan of the coffee purifier.

[0098] The second-stage filter element 82 is also connected to the concentrate tank 31. In this way, boiling water containing impurities that the second-stage filter element 82 fails to filter can flow into the concentrate tank 31 to avoid affecting the subsequent filtration of the post-filter section.

[0099] Please see Figure 2 In some embodiments, the coffee purification system also includes a steam water circuit. The steam water circuit includes a steam pipe 92 and a steam valve 93 disposed on the steam pipe 92, wherein the steam pipe 92 is connected to the extraction water circuit 2. It is understood that when the coffee purification system activates its steam function, pure water from the pure water outlet 83 flows through the first inlet pipe 111 and the second inlet pipe 112, and then flows into the pressurized instant heating module 5. At this time, the pressurized instant heating module 5 operates, and the hot water in the pressurized instant heating module 5 flows into the steam pipe 92 through the extraction water circuit 2. The steam valve 93 opens, allowing steam to be ejected from the steam outlet 94.

[0100] Please continue reading. Figure 2 In some embodiments, the coffee purification system also includes a steam drain pipe 9 and a steam drain valve 91.

[0101] The steam drain pipe 9 is connected to the extraction water circuit 2 and the concentrate tank 31. One end of the steam drain pipe 9 is connected to the extraction water circuit 2, and the other end is connected to the concentrate tank 31. A steam drain valve 91 is installed on the steam drain pipe 9 to discharge steam from the pipe to the concentrate tank 31. It is understood that before the coffee purification system activates its steam function, residual water or condensate from steam condensation may remain in the extraction water circuit 2. Therefore, controlling the steam drain valve 91 to open allows the residual water and condensate to be discharged to the concentrate tank 31, preventing any disruption to the normal operation of the steam function.

[0102] Furthermore, when a user requests hot coffee, since the coffee purification system integrates a cold brew function, to ensure the temperature of the hot brew, the piping through which the hot brew flows can be preheated before the hot brew function is activated, and the preheated water is drained to the concentrate tank 31 through the steam drain valve 91. Similarly, when a user requests cold coffee, since the coffee purification system integrates a hot brew function, to ensure the temperature of the cold brew, the piping through which the cold brew flows can be precooled before the cold brew function is activated, and the preheated water is drained to the concentrate tank 31 through the steam drain valve 91.

[0103] 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.

[0104] 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 purification system, characterized in that, The coffee purification system is applied to coffee purifiers and includes: Water tank; The filter assembly has an inlet end connected to the outlet end of the water tank and a pure water outlet. The water inlet circuit includes an inlet pipe and a water pump installed on the inlet pipe, wherein the inlet pipe is connected to the pure water outlet. The pressurized instant heating module is connected to the water pump through the water inlet pipe; The first water outlet is connected to the water inlet pipe, and the first water outlet is used at least for discharging cold water; The second water outlet and the extraction water path are both connected to the pressurized instant heating module, and one of them is selectively connected to the pressurized instant heating module; and, A pressure relief assembly is disposed between the water pump and the pressurized instant heating module, and the pressure relief assembly is connected to the pure water outlet and / or the water tank.

2. The coffee purification system as described in claim 1, characterized in that, The pressure relief assembly includes: The first pressure relief pipe is connected to the outlet of the water pump and the pure water outlet or the water tank; and, A first pressure relief valve is installed on the first pressure relief pipe to allow the water discharged from the water pump to flow to the pure water outlet or the water tank through the first pressure relief valve. The opening degree of the first pressure relief valve can be adjusted according to the pressure value required when extracting coffee through the extraction water circuit.

3. The coffee purification system as described in claim 2, characterized in that, The pressure relief assembly also includes: The second pressure relief pipe is connected to the water pump and the pure water outlet or the water tank; A pressure relief solenoid valve is disposed on the second pressure relief pipe; and, The second pressure relief valve is installed on the second pressure relief pipe and along the water flow direction. The second pressure relief valve is located downstream of the pressure relief solenoid valve. The pressure relief of the second pressure relief valve is less than that of the first pressure relief valve.

4. The coffee purification system as described in claim 1, characterized in that, The water inlet pipe includes: The first water inlet pipe includes a first hot water inlet pipe and a cold water inlet pipe, both of which are connected to the pure water outlet; and... The second water inlet pipe is connected to the first hot water inlet pipe and the cold water inlet pipe, and is also connected to the pressurized instant heating module. The first water outlet is connected to the cold water inlet pipe or the first hot water inlet pipe and the cold water inlet pipe in a common section. The water pump is installed on the second water inlet pipe and is located upstream of the pressure relief assembly along the water flow direction of the second water inlet pipe.

5. The coffee purification system as described in claim 4, characterized in that, It also includes an inlet solenoid valve, a refrigeration module, and a cold water outlet solenoid valve arranged sequentially along the water flow direction of the cold water inlet pipe. The cold water outlet solenoid valve is connected to the first hot water inlet pipe through the cold water inlet pipe, and the refrigeration module is also connected to the first water outlet path.

6. The coffee purification system as described in claim 5, characterized in that, The first water outlet path includes: The cold water outlet pipe is connected to the refrigeration module; A cold water pump is installed on the cold water outlet pipe, and, A first flow meter is installed on the cold water outlet pipe and along the water flow direction of the cold water outlet pipe, and the first flow meter is located downstream of the cold water pump.

7. The coffee purification system as described in claim 5, characterized in that, Also includes: A cold water return pipe is connected to the refrigeration module and the filter assembly; and, A cold water return pump is installed on the cold water return pipe to return the cold water in the refrigeration module to the filter assembly.

8. The coffee purification system as described in claim 4, characterized in that, Also includes: A normal temperature water outlet pipe is connected to the pure water outlet. A solenoid valve for ambient temperature water is installed on the ambient temperature water outlet pipe; and, The second flow meter is installed on the ambient temperature water outlet pipe and is located downstream of the ambient temperature water solenoid valve.

9. The coffee purification system as described in claim 4, characterized in that, The second water inlet pipe includes: The second hot water inlet pipe is connected to the first hot water inlet pipe; and, The extraction inlet pipe is connected to both the first hot water inlet pipe and the cold water inlet pipe; The water pump includes a water supply pump respectively installed on the second hot water inlet pipe and an extraction water pump respectively installed on the extraction inlet pipe; The water supply pump outputs water through the pressurized instant heating module and the second water outlet circuit, and the extraction water pump prepares coffee through the pressurized instant heating module and the extraction water circuit. The pressure relief component is located between the extraction water pump and the pressurized instant heating module.

10. The coffee purification system as described in claim 9, characterized in that, The second inlet pipe also includes: A check valve is installed on the second hot water inlet pipe and located between the water supply pump and the pressurized instant heating module; and / or, A buffer noise reduction component is installed on the extraction water inlet pipe and located between the extraction water pump and the pressure relief component.

11. The coffee purification system as described in claim 9, characterized in that, Also includes: A negative pressure valve is installed on the first hot water inlet pipe; as well as, A third flow meter is installed on the first hot water inlet pipe and along the water flow direction, the third flow meter being located downstream of the negative pressure valve; or, it is installed on the common section of the first hot water inlet pipe and the cold water inlet pipe.

12. The coffee purification system as described in claim 11, characterized in that, The first water outlet path includes: A cold water outlet pipe is connected to the outlet end of the third flow meter; and, A cold water pump is installed on the cold water outlet pipe, and the cold water pump works in conjunction with the cold water outlet pipe to discharge water.

13. The coffee purification system as described in claim 9, characterized in that, The second 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 extraction water path includes an extraction pipe connected to the pressurized instant heating module, and a coffee valve and an extraction device arranged sequentially on the extraction pipe 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.

14. The coffee purification system as described in claim 13, characterized in that, The water outlet valve and the coffee valve can be replaced by a three-way valve. The water inlet of the three-way valve is connected to the pressurized instant heating module, and the two water outlets of the three-way valve are respectively connected to the water outlet pipe and the extraction pipe.

15. The coffee purification system as described in claim 1, characterized in that, It also includes a water tank, the water tank comprising: Concentrate tank; and, The raw water tank is spaced apart from the concentrated water tank, and the outlet of the raw water tank is connected to the inlet of the filter assembly.

16. The coffee purification system as described in claim 15, characterized in that, The filtering component also includes: The first-stage filter element is connected to the outlet of the raw water tank and includes a pre-filter and a post-filter, wherein the post-filter has the pure water outlet; and, The second-stage filter element is connected to the pre-filter and the post-filter, and is also connected to the concentrate tank to direct wastewater to the concentrate tank.

17. The coffee purification system as described in claim 15, characterized in that, Also includes: A steam drain pipe is connected to the extraction water circuit and the concentrate tank; and, A steam drain valve is installed on the steam drain pipe to discharge steam from the steam drain pipe to the concentrate tank.

18. The coffee purification system according to any one of claims 1-17, characterized in that, Also includes: The steam water circuit includes a steam pipe and a steam valve installed on the steam pipe, and the steam pipe is connected to the extraction water circuit.

19. 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 1-18 is installed within the mounting cavity.

Images