Coffee pure drink device

Abstract

This application provides a coffee purification device, including a hot water circuit and a cold water circuit at least partially independent of the hot water circuit. The cold water circuit includes a water supply treatment module, a low-temperature water preparation module, and an extraction module. The water supply treatment module includes a filtration assembly for filtering the raw water. The low-temperature water preparation module is arranged downstream of the water supply treatment module along the water flow direction. The low-temperature water preparation module includes a cold water tank and a refrigeration assembly. The cold water tank has a cold water chamber connected to the outlet of the filtration assembly and is used to store water cooled by the refrigeration assembly. The extraction module is arranged downstream of the low-temperature water preparation module along the water flow direction and is connected to the cold water chamber for low-temperature extraction of the coffee concentrate. This embodiment aims to improve the efficiency of cold brew coffee preparation in the coffee purification device.

Description

Technical Field

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

[0002] Coffee purifiers are devices that combine water purification and coffee extraction functions. Cold brew coffee is gradually gaining popularity among consumers due to its mild taste and low acidity and astringency. Among related technologies, most coffee purifiers with cold brew functions rely on externally pre-cooled cold water input and cannot independently prepare low-temperature water that meets the requirements of cold brew.

[0003] Using an external cold water input method requires users to prepare cold water in advance and manually add it to the device, which is cumbersome. Furthermore, it is difficult to keep the cold water temperature stable within the appropriate range required for cold brewing, and fluctuations in water temperature can easily affect the consistency of the flavor of cold brew coffee. Summary of the Invention

[0004] This application provides a coffee purification device aimed at improving the efficiency of cold brew coffee preparation.

[0005] This application provides a coffee purification device, including a hot water circuit and a cold water circuit that is at least partially independent of the hot water circuit. The cold water circuit includes:

[0006] The water supply treatment module includes a filtration component for filtering raw water; A low-temperature water preparation module is arranged downstream of the water supply treatment module along the water flow direction. The low-temperature water preparation module includes a cold water tank and a refrigeration assembly. The cold water tank has a cold water chamber connected to the outlet of the filtration assembly and is used at least to store water cooled by the refrigeration assembly. An extraction module is arranged downstream of the low-temperature water preparation module along the water flow direction. The extraction module is connected to the cold water chamber and is used for low-temperature extraction of coffee concentrate.

[0007] In some embodiments, the hot water path includes: The pressurized instant heating component is arranged downstream of the water supply treatment module along the water flow direction and is used to heat the water flowing into the pressurized instant heating component during operation. The pressurized instant heating component and the low-temperature water preparation module are arranged in parallel.

[0008] In some embodiments, the cold water path includes: A water pump, wherein the inlet of the water pump is connected to the outlet of the cold water tank; The rated output pressure of the water pump is P, and P satisfies: 0 bar < P ≤ 4 bar.

[0009] In some embodiments, the outlet pump includes a low-pressure pump or a pressure-adjustable rotary pump.

[0010] In some embodiments, the coffee purification device further includes a control module; the extraction module further includes: Extraction chamber; and A flow control device is installed between the output end of the water pump and the extraction chamber, and is electrically connected to the control module. The flow control device is used to detect the flow rate of water flowing into the extraction chamber and send it to the control module. The control module adjusts the operating status of the outlet pump at least according to the water flow rate.

[0011] In some embodiments, the flow detection device includes a flow meter.

[0012] In some embodiments, the low-temperature water preparation module includes: An ice storage compartment is movably disposed within the cold water tank, having a storage location within the cold water tank and an ice-retrieving location exposed outside the cold water tank. The refrigeration component is used to selectively cool flowing water into cold water or freeze it into ice. The cold water chamber is used to store the cold water, and the ice storage chamber is used to store the ice.

[0013] In some embodiments, the low-temperature water preparation module includes: A position sensor is installed on the side of the cold water tank facing the ice storage compartment, and is used to generate a status signal indicating that the ice storage compartment is in place when the ice storage compartment is in the storage position.

[0014] In some embodiments, the upper part of the ice storage chamber has a detection port; the cryogenic water preparation module includes: An infrared detection component is arranged corresponding to the detection port, and the detection light path of the infrared detection component illuminates the ice storage compartment through the detection port.

[0015] In some embodiments, the ice storage chamber is located above the cold water chamber; the refrigeration assembly includes: Ice trays have internal heat exchange channels for refrigerant flow, used for heat exchange with water; The low-temperature water preparation module includes: A water receiving component is arranged below the ice tray and has a water receiving groove, with a portion of the water receiving groove extending from top to bottom into the cold water cavity for receiving the cold water and guiding the cold water into the cold water cavity.

[0016] In some embodiments, the refrigeration assembly further includes a compressor and a condenser, the compressor, the condenser, and the ice tray being connected to form at least a portion of a refrigeration cycle; A refrigerant branch pipe is provided between the compressor and the ice tray, and the refrigeration assembly further includes: A refrigerant valve is installed on the refrigerant branch pipe and is used to control the on / off state of the refrigerant branch pipe.

[0017] In some embodiments, the ice storage compartment has an upward-facing opening, the ice grid is located above the ice storage compartment and has multiple ice-making slots, the openings of the ice-making slots are arranged facing the side where the ice storage compartment is located, and the direction of the openings of the ice-making slots is set at an angle to the vertical direction, so that the falling ice blocks fall into the ice storage compartment.

[0018] In some embodiments, the low-temperature water preparation module includes: A water supply pipe is connected to the cold water chamber and extends from bottom to top. A circulating pump, installed on the water supply pipe, is used to transport water from the cold water chamber to the water supply pipe; and A diversion pipe is connected to and communicates with the upper end of the water supply pipe, located above the ice grid. The diversion pipe has multiple diversion ports, which are connected to the ice trough.

[0019] In some embodiments, the low-temperature water preparation module further includes at least one component disposed within the cold water chamber: A water level detection device is used to detect the water level in the cold water chamber; A temperature sensor is used to detect the water temperature inside the cold water chamber; The sterilization module is used to sterilize the water in the cold water chamber.

[0020] In some embodiments, the coffee purification device further includes a raw water tank, and the filter assembly is connected to the raw water tank for filtering the raw water in the raw water tank; the filter assembly includes: The first filter element has a first inlet, a first outlet, a secondary inlet, and a secondary outlet, wherein the first inlet is connected to the raw water tank. The second filter element has a second inlet connected to the first outlet and a second outlet connected to the second inlet; The secondary water outlet is connected to the cold water chamber.

[0021] In some embodiments, the first filter element includes a pre- and post-filter composite element, the second filter element includes a reverse osmosis filter element, and the first filter element and the second filter element are arranged side by side.

[0022] The low-temperature water preparation module in this embodiment includes a cold water tank and a refrigeration component. The cold water tank has a cold water chamber connected to the outlet of the filter component and is used to store water cooled by the refrigeration component. Low-temperature water is prepared directly through the refrigeration component without relying on external cold water input or ice storage tank, which greatly shortens the low-temperature water preparation time and improves refrigeration efficiency. In other words, the coffee purification device integrates a refrigeration component and can actively prepare low-temperature water instead of relying on an external ice source, which improves the autonomy and convenience of cold drink preparation.

[0023] The cold water chamber can store low-temperature water, ensuring a continuous and stable supply of low-temperature water and preventing insufficient water supply or temperature fluctuations from affecting the extraction effect during cold extraction. Furthermore, since the outlet of the filter assembly is connected to the cold water chamber, pure water can be added to the cold water tank when needed, maintaining the water level balance and ensuring continuous cooling capacity. Attached Figure Description

[0024] 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 these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a coffee purification device provided in one embodiment of this application; Figure 2 This is a schematic diagram of the flow path of a coffee purification device provided in one embodiment of this application; Figure 3 for Figure 1 A schematic diagram of the exploded structure shown; Figure 4 for Figure 3 A structural diagram of some of the structures shown (machine casing omitted); Figure 5 for Figure 1 A cross-sectional view of the structure shown along the front-to-back direction. Figure 6 for Figure 1 The diagram shows a cross-sectional view of the structure along the left-right direction.

[0026] Explanation of reference numerals in the attached figures: 100. Coffee purification equipment; 1. Housing; 10. Water supply module; 11. Filter assembly; 111A. First filter element; 111A1. Housing; 111A2. Pre-filter structure; 111A3. Post-filter structure; 111B. Second filter element; 20. Low-temperature water preparation module; 21. Cold water tank; 22. Refrigeration assembly; 21a. Cold water chamber; 221. Compressor; 222. Condenser; 223. Ice tray; 223a. Ice maker; 224. Cold water... 23. Medium valve; 24. Water supply pipe; 25. Circulation pump; 26. Diversion pipe; 27. Diversion port; 28. Ice storage tank; 29. ​​Water receiving fitting; 20. Water receiving tank; 21. Water level detection device; 22. Temperature sensor; 23. Sterilization module; 60. Cold water inlet valve; 70. Raw water tank; 70a. Raw water chamber; 70b. Concentrate chamber; 91. Concentrate outlet valve; 92. Overflow valve; 93. Extraction module; 94. Outlet pump; 95. Check valve; 96. Pressurized instant heating component; 1A, Hot water circuit; 2A, Cold water circuit; 3A, Refrigerant branch pipe; 4A, Concentrate pipe. 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 merely illustrative and not intended to limit the scope of this application.

[0028] like Figure 1 As shown, the coffee purification device 100 is a comprehensive device that integrates water purification and coffee preparation functions. It can directly connect to tap water through a built-in water treatment module to purify the raw water, thereby eliminating the hassle of users frequently purchasing and replacing bottled water and reducing operating costs.

[0029] To meet the requirements of cold brew, most coffee purifiers rely on externally pre-cooled cold water input, and cannot independently produce the low-temperature water required for cold brew. Alternatively, they use ice tank structures for cold water storage and supply, again failing to achieve the same level of self-sufficiency.

[0030] Using an external cold water input method requires users to prepare cold water in advance and manually add it to the equipment, which is cumbersome. Furthermore, it's difficult to maintain a stable cold water temperature within the appropriate range for cold brewing, and temperature fluctuations can easily affect the consistency of the cold brew coffee's flavor. In contrast, using an ice-storage tank structure to supply cold water achieves cold water preparation through long-term cold storage, rather than achieving efficient cooling through a dedicated ice-making structure.

[0031] like Figure 1 and Figure 2As shown, to solve the above problems, this embodiment provides a coffee purification device 100. The coffee purification device 100 includes a housing 1 and a hot water path 1A housed in the housing 1 and a cold water path 2A that is at least partially opposed to the hot water path 1A. That is, the system is equipped with both a hot water path 1A and a cold water path 2A, which can be used to prepare hot drinks and cold drinks, respectively. The two do not completely share the same flow path. Since the cold water path 2A is at least partially independent of the hot water path 1A, it can effectively prevent the high temperature water in the hot water path 1A from transferring heat through the shared pipes and components, thus avoiding thermal interference to the cold water in the cold water path 2A. It also reduces the heat exchange between the cold water and the hot environment in the cold water path 2A, providing a basis for maintaining the low temperature of the cold water.

[0032] Moreover, in this embodiment, the independent setting mode can realize the independent operation of cold water and hot water functions. When only the cold water function or the cold water direct drinking function is needed, the cold water circuit 2A can be started separately without starting the relevant heating components of the hot water circuit 1A, which reduces the energy consumption of the equipment, reduces the mutual interference between the two water circuits, improves the stability and reliability of the system operation, and avoids the water temperature fluctuation of the cold water circuit 2A caused by the operation of the hot water circuit 1A.

[0033] The cold water circuit 2A includes a water treatment module 10, a low-temperature water preparation module 20, and an extraction module 93. The water treatment module 10 can treat the raw water entering both the cold water circuit 2A and the hot water circuit 1A uniformly, eliminating the need for separate water treatment equipment for each circuit and reducing the structural complexity and production cost of the coffee purification device 100. The water treatment module 10 ensures that the water flowing into the cold water chamber 21a meets the water quality requirements for drinking and preparation, providing a high-quality water source for subsequent cooling, heating, and extraction processes.

[0034] The water treatment module 10 includes a filter assembly 11 for filtering raw water, removing impurities, improving water quality and taste, and ensuring the treated water meets drinking water requirements. The filter assembly 11 directly purifies the raw water, eliminating the need for users to prepare additional purified water, thus improving ease of use and enhancing the quality of coffee extraction. The filter assembly 11 is positioned upstream of the low-temperature water preparation module 20 along the water flow direction, and its outlet is connected to the low-temperature water preparation module 20, ensuring that the raw water entering the low-temperature water preparation module 20 has undergone filtration treatment.

[0035] The low-temperature water preparation module 20 includes a cold water tank 21 and a refrigeration component 22. The cold water tank 21 has a cold water chamber 21a that is connected to the outlet of the filter component 11 and is used to store water cooled by the refrigeration component 22. Low-temperature water is prepared directly through the refrigeration component 22 without relying on external cold water input or ice storage tank, which greatly shortens the low-temperature water preparation time and improves refrigeration efficiency. That is, the coffee purification device 100 integrates the refrigeration component 22 and can actively prepare low-temperature water instead of relying on external ice source, which improves the autonomy and convenience of cold drink making.

[0036] The cold water chamber 21a can store low-temperature water, ensuring a continuous and stable supply of low-temperature water and preventing the extraction effect from being affected by insufficient water supply or water temperature fluctuations during the cold extraction process. Furthermore, since the outlet of the filter component 11 is connected to the cold water chamber 21a, pure water can be added to the cold water tank 21 when needed, maintaining the water level balance of the cold water tank 21 and ensuring continuous cooling capacity.

[0037] The extraction module 93 is a functional component for coffee extraction. It is arranged downstream of the low-temperature water preparation module 20 along the water flow direction and is used at least for low-temperature extraction of coffee concentrate. The extraction module 93 can fully contact the cold water from the cold water chamber 21a with the coffee powder in a low-temperature environment and extract coffee flavor substances through long-term soaking or slow drip filtration to form cold brew coffee liquid.

[0038] like Figure 2 As shown, in some embodiments, the coffee purification device 100 also includes a one-way valve 96, which is an automatic valve that allows fluid to flow in one direction and prevents reverse flow. The one-way valve 96 is disposed in the flow path from the cold water chamber 21a to the extraction module 93.

[0039] The coffee purification device 100 in this embodiment can operate independently for both hot and cold brewing, enhancing the device's versatility and reducing water temperature fluctuations caused by interference between the two water circuits. Through the orderly arrangement of the water supply treatment module 10, the low-temperature water preparation module 20, and the extraction module 93 in the cold water circuit 2A, the entire process of cold brew coffee preparation is made convenient, eliminating the need for users to prepare additional purified water and external cold water. The water supply treatment module 10 can effectively purify the raw water, ensuring the purity of the cold brew water. The low-temperature water preparation module 20 does not rely on an ice storage tank and can independently and efficiently prepare and store low-temperature water, significantly shortening the cold water preparation time and achieving a continuous and stable supply of low-temperature water. The extraction module 93 can fully extract the coffee concentrate in a stable low-temperature environment, avoiding the sour taste caused by high temperatures and ensuring that the cold brew coffee has a smooth taste and pure flavor.

[0040] like Figure 2 and Figure 4As shown, in some embodiments, the hot water circuit 1A includes a pressurized instant heating component 97, which is arranged downstream of the water supply treatment module 10 along the water flow direction. This ensures that the water entering the pressurized instant heating component 97 has been purified, preventing impurities in the raw water from adhering to the inside of the pressurized instant heating component 97 and affecting heating efficiency, service life, and water quality. Simultaneously, the purified water also enhances the taste of hot brewed coffee. Furthermore, based on the above, both the hot water circuit 1A and the cold water circuit 2A share the outlet of the filter component 11 as the water source inlet, and then form independent water flow paths, eliminating the need for separate raw water filtration devices and reducing the overall size of the coffee purification device 100.

[0041] When the pressurized instant heating component 97 is working, it is used to heat the water flowing into the pressurized instant heating component 97. The heating function of the pressurized instant heating component 97 directly realizes the preparation of hot water, which meets the needs of hot brew coffee preparation. Compared with the traditional water storage heating structure, the pressurized instant heating component 97 does not require pre-storing hot water or long-term preheating. It can realize instant heating and instant water dispensing, which greatly improves the preparation efficiency of hot brew coffee and meets the user's instant drinking needs. Hot water at the right temperature can promote the full dissolution of flavor substances in coffee powder, ensuring that hot brew coffee has a mellow taste and rich aroma.

[0042] The pressurized instant heating component 97 and the low-temperature water preparation module 20 are arranged in parallel, sharing the same outlet of the water supply treatment module 10. Each forms an independent water flow branch, and the water can flow into the pressurized instant heating component 97 or the low-temperature water preparation module 20 as needed. The diversion design allows for flexible control of the operation of a single branch according to user needs, reducing unnecessary energy consumption and improving the practicality and flexibility of the equipment.

[0043] By arranging the pressurized instant heating component 97 and the low-temperature water preparation module 20 in parallel, the preparation of hot brew coffee and the preparation of low-temperature water can be carried out simultaneously, greatly improving the efficiency of the equipment. This meets the user's need to prepare cold water and store it in the cold water chamber 21a at the same time as preparing hot brew coffee, avoiding the need to wait for cold water preparation when preparing cold brew coffee later, thus saving the user time. Furthermore, the parallel branches are independent, preventing heat transfer during the hot water preparation process from reaching the low-temperature water preparation module 20, preventing the low-temperature water from overheating. This also prevents the low-temperature water from affecting the heating efficiency of the pressurized instant heating component 97, ensuring stable process parameters for both water circuits, and further guaranteeing the flavor of the hot brew coffee and the temperature stability of the cold water.

[0044] like Figure 2As shown, in some embodiments, the cold water circuit 2A includes an outlet pump 95, which is a functional component that provides power for water flow in the cold water circuit 2A. The inlet of the outlet pump 95 is connected to the outlet of the cold water tank 21, enabling it to stably draw low-temperature cold water from the cold water chamber 21a, allowing the low-temperature cold water to continuously and smoothly enter the extraction module 93. The extraction module 93 can obtain a sufficient and stable low-temperature water source, ensuring the smooth progress of the cold extraction process.

[0045] The rated output pressure of the water pump 95 is P, which satisfies the condition that 0 bar < P ≤ 4 bar. This avoids excessive extraction of coffee powder due to excessive pressure in cold brew mode, prevents a large amount of bitter substances in the coffee from dissolving, and ensures that the cold brew coffee has a mellow and refreshing taste, meeting the requirements of low bitterness and high aroma in cold brew coffee.

[0046] In some embodiments, the outlet pump 95 includes a low-pressure pump or a pressure-adjustable rotary pump. The low-pressure pump can directly output low-pressure power that meets the requirements of cold extraction, stably delivering low-temperature water and providing suitable cold extraction pressure. The pressure-adjustable rotary pump can flexibly adjust the output pressure according to the actual needs of the cold extraction process, ensuring that the pressure always matches the requirements of cold extraction. At the same time, both types of pumps can achieve stable and continuous delivery of low-temperature water, ensuring the smooth progress of the cold extraction process.

[0047] The core reason for limiting the water pump 95 to a low-pressure pump or an adjustable-pressure rotary pump is to adapt to the low-pressure requirements of cold brew extraction, ensuring a precise match between the output pressure of the water pump 95 and the cold brew process. When using a low-pressure pump, its own output pressure is stable and meets the requirements of cold brew, requiring no additional adjustment. Its simple structure and reliable operation reduce equipment assembly and maintenance costs, while preventing pressure over- or under-pressure, ensuring thorough cold brew extraction and pure coffee flavor. When using an adjustable-pressure rotary pump, the output pressure can be flexibly adjusted according to different coffee types and extraction needs, adapting to diverse cold brew scenarios, improving equipment applicability, and avoiding the problem of a single pressure pump being unable to adapt to different cold brew requirements. Both pump types are suitable for low-temperature water environments, operate stably with low noise, and have controllable power output, ensuring a coordinated match between the low-temperature water delivery rate and extraction pressure, avoiding unstable delivery and extraction pressure deviations caused by unsuitable pump types.

[0048] like Figure 2 As shown, in some embodiments, the cold water circuit 2A includes a cold water inlet valve 60, which is located between the filter assembly 11 and the cold water tank 21. The cold water inlet valve 60 controls the flow of water from the outlet of the filter assembly 11 to the cold water chamber 21a, thereby realizing the on / off management of the water inlet to the cold water chamber 21a.

[0049] In some embodiments, the coffee purification device 100 further includes a control module. The control module is a control unit with signal receiving, processing, and command sending functions, and is a component that enables the coordinated operation and parameter adjustment of various components of the device. The control module can receive signals sent by various detection components, analyze and process the signals, and send adjustment commands to relevant execution components, such as the water pump 95, to control the water flow rate and the operating status of the water pump 95 during the cold brewing process. At the same time, it coordinates the overall operating logic of the device to ensure the coordinated and stable operation of all components.

[0050] The extraction module 93 also includes an extraction chamber and a flow control device. The extraction chamber has an extraction cavity, which is a dedicated space for providing low-temperature water to fully contact, soak, and extract the coffee concentrate.

[0051] A flow control device is installed between the output of the water pump 95 and the extraction chamber, and is electrically connected to the control module. This device detects the water flow rate into the extraction chamber and sends the data to the control module, enabling real-time detection and feedback of the water flow rate during the cold brew process. This avoids the problem of the coffee purifier 100 lacking flow detection and flow control during cold brew. Real-time detection accurately captures flow fluctuations, providing reliable data support for the control module and preventing insufficient or excessive extraction due to unknown flow rates.

[0052] The control module adjusts the operating status of the outlet pump 95 at least according to the water flow rate to achieve real-time transmission of the flow signal. This ensures that the control module can respond to changes in flow rate in a timely manner, allowing time for subsequent adjustment of the operating status of the outlet pump 95 and ensuring the stability of the cold extraction process parameters.

[0053] Specifically, the appropriate water flow range required for cold extraction can be preset in the control module. The real-time flow signal fed back by the flow control device is compared with the preset range. When the real-time flow is lower than the preset range, the control module sends a command to adjust the outlet pump 95, such as increasing the speed to increase the water flow. When the real-time flow is higher than the preset range, the outlet pump 95 is adjusted, such as decreasing the speed to reduce the water flow. This ensures timely adjustment response and adapts to the operating characteristics of the outlet pump 95. Furthermore, it avoids ineffective operation of the outlet pump 95, reduces energy consumption, extends the service life of the outlet pump 95, and further improves the practicality and reliability of the equipment, adapting to the needs of diverse cold extraction scenarios.

[0054] In some embodiments, the flow detection device includes a flow meter, which is a dedicated device with accurate water flow detection function. It can capture the fluctuation of low-temperature water flow into the extraction chamber during the cold extraction process, avoid the control module from obtaining incorrect flow data due to detection deviation, ensure the accuracy of cold extraction flow parameters from the source, provide reliable data support for the subsequent adjustment of the operating status of the outlet water pump, and ensure the stability of cold extraction process parameters.

[0055] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the low-temperature water preparation module 20 includes an ice storage compartment 26, which is movably disposed within the cold water tank 21. That is, the ice storage compartment 26 is not fixedly installed inside the cold water tank 21, but rather is movably installed, allowing it to be moved and pulled out via a sliding rail. The ice storage compartment 26 has a storage position within the cold water tank 21 and an ice-scooping position exposed outside the cold water tank 21. The ice storage compartment 26 is visible outside the housing 1 of the coffee purifier 100, allowing the user to scoop ice from the ice-scooping position. When the ice storage compartment 26 is switched to the ice-scooping position, its ice-scooping area is fully exposed outside the housing 1, without any obstruction from the housing 1. The user can directly scoop ice from this position using an ice-scooping tool without disassembling the coffee purifier 100, improving the convenience of ice scooping. After scooping the ice, the ice storage compartment 26 is pushed back into the cold water tank 21, resetting the ice storage compartment 26.

[0056] The refrigeration component 22 selectively cools flowing water into cold water or freezes it into ice. The cold water chamber 21a stores cold water, and the ice storage chamber 26 stores ice. In other words, the refrigeration component 22 can selectively cool the flowing water to different degrees according to actual needs, either cooling it into cold water that meets the requirements of cold extraction or freezing it into ice. The functional division between the cold water chamber 21a and the ice storage chamber 26 is clearly defined: the cold water chamber 21a is specifically for storing the cold water prepared by the refrigeration component 22, and the ice storage chamber 26 is specifically for storing the ice prepared by the refrigeration component 22. Their functions are independent to avoid mutual interference, ensuring stable cold water temperature and effective ice storage.

[0057] In this embodiment, the refrigeration component 22 can selectively produce cold water or ice, thus diversifying the refrigeration function and avoiding the problem of the refrigeration component 22 being limited to a single function, only producing cold water or only making ice. It can meet the core requirement of cold extraction for low-temperature cold water, and also produce ice for users' additional use, improving the practicality and adaptability of the equipment. The functional division between the cold water chamber 21a and the ice storage chamber 26 is clearly defined, avoiding the problem of cold water temperature rise and ice rapid melting caused by mixed storage of cold water and ice.

[0058] In some embodiments, the low-temperature water preparation module 20 includes a position sensor. The position sensor is used to detect the position of the ice storage compartment 26. The position sensor is located on the side of the cold water tank 21 facing the ice storage compartment 26 to improve sensing accuracy and avoid signal delay and misjudgment due to excessive installation distance. The position sensor generates a status signal indicating that the ice storage compartment 26 is in place when it is in the retracted position. That is, when the ice storage compartment 26 is housed in the cold water tank 21, the position sensor generates and outputs a clear status signal indicating that the ice storage compartment 26 is accurately in place. This provides a basis for judgment for the control module, allowing the control module to control the operation of the refrigeration component 22 in conjunction with the position of the ice storage compartment 26. This prevents the equipment from activating related components when the ice storage compartment 26 is not fully retracted, such as activating the ice-making function, which could lead to ice spillage, component collisions, or a large loss of cold energy, thus ensuring the safe and stable operation of the equipment.

[0059] In some embodiments, the upper part of the ice storage chamber 26 has a detection port that extends into the ice storage chamber 26. The low-temperature water preparation module 20 includes an infrared detection component arranged corresponding to the detection port. The detection light path of the infrared detection component illuminates the ice storage chamber 26. The position of the detection port corresponds to the installation position of the infrared detection component, ensuring that the detection light path of the infrared detection component can pass smoothly and directly illuminate the interior of the ice storage chamber 26, thereby realizing the detection of the ice accumulation height inside the ice storage chamber 26.

[0060] The infrared detection component is electrically connected to the control module, transmitting detection signals to trigger the start and stop of ice making. Its function is to detect the ice accumulation in the ice storage chamber via infrared light. When the ice reaches a preset height (full ice state), it sends a signal to the control module, controlling the refrigeration component 22 to stop ice making. When the ice level drops below the preset height, ice making can resume as needed, achieving automated control of the ice making function. This eliminates the need for manual control of ice making, reducing manual operation, improving the automation level and ease of use of the equipment, and avoiding problems such as ice overflow and energy waste caused by forgetting to stop ice making.

[0061] In this embodiment, an infrared detection component is set to detect when the ice storage compartment 26 is full of ice, thus preventing ice from overflowing. Compared with traditional detection methods, infrared detection has a fast response speed and high detection accuracy, and can accurately identify the full ice state, thus preventing excessive ice accumulation and overflow from the ice storage compartment 26 due to untimely detection.

[0062] In some embodiments, two infrared detection components can be provided, with each component positioned on one side of the ice storage chamber 26 in the left-right direction. Correspondingly, two detection ports are arranged one-to-one with the two infrared detection components. The detection light paths illuminate the interior of the ice storage chamber 26 from both sides through the detection ports, achieving full coverage detection of the left and right areas of the ice storage chamber 26. Compared to a single infrared detection component that can only detect one side, the dual-sided arrangement effectively avoids detection deviations caused by uneven ice accumulation on both sides of the ice storage chamber 26. For example, if one side is full of ice while the other side is not, a single component may misjudge it as not full, causing ice to overflow. Dual-sided components can simultaneously detect both sides, ensuring more accurate full-ice detection, avoiding the risk of ice overflow, and ensuring the stable function of the ice-making module and the ice storage chamber.

[0063] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the ice storage chamber 26 is located above the cold water chamber 21a. That is, the relative positions of the ice storage chamber 26 and the cold water chamber 21a within the cold water tank 21 are such that the cold water tank 21 has a layered layout, with the ice storage chamber 26 fixedly mounted above the cold water chamber 21a. This ensures that the two remain independent cavities without interference, preventing direct contact between the ice storage chamber 26 and the cold water chamber 21a, and preventing the cold water in the cold water chamber 21a from affecting the storage effect of the ice in the ice storage chamber 26. Furthermore, because the ice storage chamber 26 is located at the top, the condensate produced by its melting can naturally drip into the cold water chamber 21a, achieving water resource recycling and reducing water waste.

[0064] The refrigeration component 22 includes an ice-making tray 223, which serves as the evaporator component in the refrigeration cycle. The ice-making tray 223 has internal heat exchange channels for refrigerant flow. These channels are made of a corrosion-resistant material with excellent thermal conductivity and are integrated into the interior of the ice-making tray 223. The channels conform to the shape of the ice-making tray 223 and are evenly distributed throughout its various areas, maximizing the contact area between the refrigerant and water and improving heat exchange efficiency. The heat exchange channels exchange heat with the water, and the adjustable heat exchange intensity can adapt to different ice-making speeds and chilled water temperature requirements. When the refrigeration component 22 switches to ice-making mode, the refrigerant absorbs heat as it flows within the heat exchange channels, freezing the water in the ice-making tray 223 into ice. When switching to chilled water preparation mode, the refrigerant circulation can be adjusted, utilizing the heat exchange between the heat exchange channels and the water to cool the flowing water to the low temperature required for chilling, providing cooling capacity for chilled water preparation. The compatibility between the ice tray 223 and the refrigerant circulation system ensures the stable realization of the bidirectional refrigeration function of the refrigeration component 22, which not only meets the cold water requirements of cold extraction, but also ensures the stability of ice preparation and improves the reliability of the equipment.

[0065] The ice grid 223 has multiple ice-making slots 223a, each of which can independently form ice blocks, ensuring that the ice blocks are of regular shape. Multiple ice-making slots 223a can simultaneously prepare multiple ice blocks, improving ice-making efficiency.

[0066] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the low-temperature water preparation module 20 includes a water receiving component 27, which is arranged below the ice-making grid 223 and has a water receiving trough 27a. The water receiving trough 27a is grooved and can receive cold water falling from the ice-making grid 223. Along the vertical direction, the projection of all ice-making troughs 223a is located within the projection range of the water receiving trough 27a, so as to collect the falling cold water in a concentrated manner and prevent the cold water from spreading and flowing or flowing into the ice storage chamber 26.

[0067] Furthermore, the water receiving trough 27a extends from top to bottom to the cold water chamber 21a, which is used to receive cold water and guide the cold water into the cold water chamber 21a. This allows the cold water received by the water receiving part 27 to flow into the cold water chamber 21a along the water receiving trough 27a, ensuring smooth flow of cold water without significant resistance. The extension length is adapted to the internal vertical space of the equipment and fits the compact layout of the equipment.

[0068] Specifically, the water receiving component 27 includes an integrally formed water receiving section and a water guiding section, which together define the water receiving trough 27a. The water receiving section and the diversion pipe 25 are arranged parallel to each other in axis, and their length is adapted to the length of the ice tray 223, so as to receive the cold water falling from the ice tray 223. The water guiding section is connected to the end of the water receiving section and extends from top to bottom. The vertical arrangement of the water guiding section ensures that the cold water can flow naturally by gravity without additional power, replenishing the cold water reserve of the cold water chamber 21a and ensuring a stable cold water supply.

[0069] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the refrigeration assembly 22 includes a compressor 221, a condenser 222, a throttling device, and an ice tray 223 connected together. The compressor 221 is used to compress and drive the refrigerant circulation. The condenser 222 is used to dissipate the heat of the high-temperature, high-pressure refrigerant into the environment. When the room-temperature, high-pressure liquid flows through the throttling device, its pressure drops sharply due to the throttling effect, and its temperature drops rapidly, forming a low-temperature, low-pressure gas-liquid mixture of refrigerant. The low-temperature refrigerant then enters the ice tray 223 to absorb heat, thus achieving the refrigeration function. The compressor 221, condenser 222, throttling device, and ice tray 223 are connected to form at least part of the refrigeration cycle, that is, the ice tray 223 serves as the evaporator component in the refrigeration cycle, and is connected in series with the compressor 221 and condenser 222 through pipelines to form a refrigerant flow path.

[0070] Furthermore, a refrigerant branch pipe 3A is provided between the compressor 221 and the ice tray 223. The refrigerant branch pipe 3A is connected in series between the compressor 221 and the ice tray 223. The high-temperature and high-pressure refrigerant gas compressed by the compressor 221 but not cooled by the condenser 222 is directly, stably and sealedly delivered to the ice tray 223. The heat of the high-temperature refrigerant is used to heat the ice tray 223, so that the ice blocks formed in the ice tray 223a are separated from the inner wall of the ice tray 223a, realizing the de-icing function and ensuring that the ice blocks can fall smoothly into the ice storage chamber 26.

[0071] The refrigeration assembly 22 also includes a refrigerant valve 224, which is located on the refrigerant branch pipe 3A and is used to control the opening and closing of the refrigerant branch pipe 3A. The valve can control its opening and closing according to actual ice removal and ice making needs, thereby controlling the flow and blockage of high-temperature refrigerant within the refrigerant branch pipe 3A. By controlling the opening and closing of the refrigerant branch pipe 3A, precise control of the high-temperature refrigerant supply for ice removal from the ice tray 223 is achieved. When ice making is complete and ice removal is required, the refrigerant valve 224 is opened, allowing the high-temperature refrigerant generated by the compressor 221 to directly enter the ice tray 223 through the refrigerant branch pipe 3A, using the high temperature to separate the ice from the ice tray 223a.

[0072] In this embodiment, the refrigerant valve 224 enables on-demand control of the high-temperature refrigerant used for de-icing. It can flexibly open or close the supply of high-temperature refrigerant according to the de-icing requirements, avoiding incomplete de-icing due to insufficient supply of high-temperature refrigerant during the de-icing stage, or the entry of high-temperature refrigerant into the ice grid 223 during the non-de-icing stage, which affects the ice-making efficiency, while effectively reducing energy consumption.

[0073] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the opening of the ice storage chamber 26 faces upwards, serving as a channel for ice blocks to fall from the ice grid 223. The ice grid 223 is located above the ice storage chamber 26, and the distance between the ice grid 223 and the ice storage chamber 26 is adapted to the ice block's sliding trajectory, preventing the ice blocks from scattering due to excessive distance or getting stuck due to insufficient distance. The ice grid 223 has multiple ice-making slots 223a, each of which can independently form ice blocks, ensuring a regular ice shape. Multiple ice-making slots 223a can simultaneously prepare multiple ice blocks, improving ice-making efficiency.

[0074] The ice grid 223 is installed vertically, and the opening of the ice trough 223a is arranged facing the side where the ice storage chamber 26 is located. That is, after the ice blocks formed in the ice trough 223a slide out, they can move directly towards the ice storage chamber 26, thus preventing the ice blocks from deviating from their trajectory and failing to fall into the ice storage chamber 26.

[0075] Furthermore, the depth direction of the ice-making tank 223a is set at an angle to the vertical direction so that the detached ice blocks fall into the ice storage chamber 26. Utilizing gravity, the ice blocks formed in the ice-making tank 223a can slide out naturally along the inclined tank, achieving de-icing without flipping the ice grid 223. At the same time, it ensures that the ice blocks can accurately fall into the ice storage chamber 26 below after sliding out, simplifying the de-icing process.

[0076] Alternatively, the ice-making tank 223a has its walls tilted downwards towards the side where the ice storage bin 26 is located. The ice blocks in the ice-making tank 223a can slide out of the ice grid 223 with the help of the tilted walls and gravity, thus removing the ice without having to flip the ice grid 223. At the same time, the ice blocks are guided towards the ice storage bin 26, ensuring that the ice blocks fall accurately into the ice storage bin 26 with the opening facing upwards.

[0077] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the ice tray 223 is located above the cold water chamber 21a, facilitating the flow of prepared cold water from top to bottom into the ice tray 223 using gravity. The low-temperature water preparation module 20 includes a water supply pipe 23, a circulation pump 24, and a branch pipe 25. The water supply pipe 23 is a dedicated channel for cold water delivery, connecting to the cold water chamber 21a and extending upwards, allowing water in the lower cold water chamber 21a to flow out through the water supply pipe 23. The circulation pump 24 is mounted on the water supply pipe 23 to provide power to deliver water from the cold water chamber 21a to the water supply pipe 23, ensuring that cold water can be smoothly delivered from bottom to top to the ice tray 223, avoiding obstructed water flow due to gravity, ensuring the continuity of water supply to the ice tray 223, and ensuring the stable operation of ice making and cold water preparation functions.

[0078] The diversion pipe 25 is designed to achieve uniform water distribution. It is connected to the upper end of the water supply pipe 23 and located above the ice grid 223. The diversion pipe 25 has multiple diversion ports 25a, which are connected to the ice-making tank 223a of the ice grid 223. This prevents a single water flow from concentrating into a certain area of ​​the ice grid 223, ensuring uniform water volume in all areas of the ice grid 223. This allows the water to fully contact the heat exchange channel, improving heat exchange efficiency and ensuring the uniformity and stability of ice making and cold water preparation.

[0079] The ice tray 223 extends along the left and right direction of the coffee purification device 100, and the diversion pipe 25 is the same, horizontally arranged above the ice tray 223. Multiple diversion ports 25a are arranged at least along the left and right direction, so that the water in the cold water chamber 21a flows into the ice tray 223 through the multiple diversion ports 25a.

[0080] like Figure 2 , Figure 5and Figure 6 As shown, in some embodiments, the low-temperature water preparation module 20 further includes at least one of the following disposed within the cold water chamber 21a: A water level detection device 281 is installed inside the cold water chamber 21a to detect the water level within the chamber. It may include a high-level float and a low-level float to ensure the detection of different water level states. The high-level float generates a high-level signal when the water level inside the cold water chamber 21a rises to the maximum allowable level, and feeds it back to the control module to stop water intake. The low-level float detects whether the water level in the cold water chamber 21a has dropped to the minimum preset water level. It generates a low-level signal when the water level inside the pure water chamber drops to the minimum working water level, and feeds it back to the control module to provide a water shortage warning. New pure water can then be added to the cold water chamber 21a from the outlet of the filter assembly 11.

[0081] Temperature sensor 282 is used to detect the water temperature in cold water chamber 21a. Temperature sensor 282 can detect the temperature of cold water in cold water chamber 21a and provide feedback water temperature data to provide a basis for judgment on the operation and adjustment of refrigeration component 22, so as to ensure that the water temperature in cold water chamber 21a is maintained within a suitable range to meet the needs of cold brew coffee preparation, direct drinking and ice making.

[0082] The sterilization module 283 is used to sterilize the water in the cold water chamber 21a. It can sterilize the cold water stored in the cold water chamber 21a, remove harmful microorganisms such as bacteria and mold in the water, avoid bacterial growth caused by long-term storage of ice water, ensure the cleanliness and drinking safety of cold water, and extend the service life of the cold water chamber 21a, and prevent scaling and damage to components caused by microbial adhesion.

[0083] like Figure 2 and Figure 3 As shown, in some embodiments, the coffee purification device 100 includes a raw water tank 70, which can be the water inlet initiation component of the cold water circuit 2A and the hot water circuit 1A. The raw water tank 70 has a raw water chamber 70a for storing raw water. Understandably, the raw water chamber 70a is connected to the municipal water source outside the coffee purification device 100, and the raw water is the initial water to be treated by the coffee purification device 100.

[0084] The filter assembly 11 is connected to and communicates with the raw water tank 70 to filter the raw water in the raw water tank 70, remove impurities from the raw water, improve the water quality and taste of the raw water, so that the treated raw water meets the requirements of direct drinking water, and also improves the quality of coffee extraction.

[0085] like Figure 2 and Figure 5As shown, in some embodiments, the filter assembly 11 includes a first filter element 111A and a second filter element 111B, which work together to achieve a multi-stage filtration function. The first filter element 111A performs the dual functions of primary filtration and secondary filtration, while the second filter element 111B performs the intermediate filtration function. It receives the water flow from the first filter element 111A after primary filtration, performs further filtration, and then returns the water flow to the first filter element 111A.

[0086] Compared to a single filter element, this embodiment can achieve more comprehensive and refined filtration, remove different types of impurities from the raw water, significantly improve water quality, and prevent impurities from entering the subsequent cold water chamber 21a, flow path, and extraction module 93, thus ensuring the taste and safety of the beverage.

[0087] Specifically, the first filter element 111A has a first inlet, a first outlet, a secondary inlet, and a secondary outlet, with the first inlet connected to the raw water chamber 70a; the second filter element 111B has a second inlet connected to the first outlet and a second outlet connected to the secondary inlet, with the secondary outlet connected to the cold water chamber 21a. This ensures the smooth operation of the tiered filtration process. Raw water enters through the first inlet, undergoes primary filtration, and is then output from the first outlet to the second filter element 111B. After further filtration by the second filter element 111B, the water flows back to the first filter element 111A through the secondary inlet to complete secondary filtration, and finally exits through the secondary outlet, forming a complete closed-loop filtration process and ensuring the continuity and integrity of the filtration.

[0088] The secondary water outlet is connected to the cold water chamber 21a, which directly delivers the clean water that has completed the multi-stage filtration to the cold water chamber 21a. This provides a high-quality water source for the low-temperature water preparation module 20, preventing impurities from entering the low-temperature water preparation module 20 and causing component blockage or damage, thus extending the service life of the low-temperature water preparation module 20. At the same time, it ensures that the prepared cold water is clean, guaranteeing the taste and drinking safety of cold brew coffee.

[0089] The secondary water outlet is also connected to the pressurized instant heating component 97, eliminating the need for a separate filtered water source for the component. This allows for the sharing and efficient distribution of clean water, simplifies the equipment piping structure, and reduces production costs. It also prevents impurities from entering the component and causing scaling and blockage of the heating element, extending the lifespan of the pressurized instant heating component 97, ensuring stable heating performance, and guaranteeing the taste and safety of hot brewed coffee.

[0090] In some embodiments, the first filter element 111A includes a pre-filter and a post-filter composite filter element. Specifically, the first filter element 111A includes a housing 111A1 and a pre-filter structure 111A2 and a post-filter structure 111A3 disposed within the housing 111A1. The housing 111A1 provides an installation carrier for the pre-filter structure 111A2 and the post-filter structure 111A3. The pre-filter structure 111A2 and the post-filter structure 111A3 have different water treatment functions, reducing the space occupied by the filter assembly 11 and lowering the equipment production cost and assembly difficulty.

[0091] The second filter element 111B includes a reverse osmosis filter cartridge, while the pre-filter structure 111A2 includes a pleated polypropylene scale-inhibiting carbon rod, and the post-filter structure 111A3 includes a carbon rod. These three elements work together to complete multi-stage filtration of the raw water. The pleated polypropylene scale-inhibiting carbon rod is responsible for preliminary water treatment, intercepting large particulate impurities and suspended solids while also inhibiting scale formation. Water initially filtered by the pleated polypropylene scale-inhibiting carbon rod is then transported to the reverse osmosis filter cartridge for further deep filtration. The reverse osmosis filter cartridge's treatment function differs from that of the pleated polypropylene scale-inhibiting carbon rod, removing minute impurities, heavy metal ions, and soluble pollutants from the water. Water further filtered by the reverse osmosis filter cartridge is then transported to the carbon rod for secondary treatment. The carbon rod adsorbs residual chlorine, odors, and some minute impurities in the water, improving the taste and ultimately ensuring that the water output to the pure water chamber meets the preset pure water standard. The housing 111A1 of the first filter element 111A is used to fix and protect the pleated polypropylene scale-inhibiting carbon rod and the carbon rod, preventing them from being disturbed or damaged by external factors. The synergistic effect of the three-stage filtration in this embodiment further optimizes the taste and cleanliness of the pure water, making it more suitable for the requirements of low-temperature coffee extraction for clean water quality and good taste.

[0092] Inside the housing 1, the first filter element 111A and the second filter element 111B are arranged side by side and adjacent to each other in the front-to-back direction. They are at the same horizontal height and are installed close to each other, making full use of the internal space of the equipment. This avoids the first filter element 111A and the second filter element 111B from stacking up and down and occupying too much vertical space, thus optimizing the internal layout of the equipment and making the overall structure of the equipment more compact. This meets the design requirements of the miniaturized coffee purification equipment 100 and reduces the overall size of the equipment.

[0093] like Figure 2 As shown, in some embodiments, the raw water tank 70 also has a concentrated water chamber 70b that is isolated from the raw water chamber 70a. The raw water and wastewater are stored separately in the same raw water tank 70. The isolation between the two chambers prevents the concentrated water from flowing back and contaminating the raw water, so that the raw water always enters the water supply treatment module 10 in a relatively clean state. At the same time, the concentrated water can be stored centrally for other purposes or discharged uniformly, which improves the integration and space utilization of the equipment.

[0094] The coffee purification device 100 also includes a concentrate pipeline 4A and a concentrate outlet valve 91, making the concentrate discharge path an independent and controllable part. The concentrate pipeline 4A connects the second filter element 111B and the concentrate chamber 70b. The concentrate produced by the second filter element 111B provides a complete flow path from the source to the collection container, allowing the concentrate to be delivered to the concentrate chamber 70b after production. This avoids the inconvenience of the concentrate remaining in the pipeline for a long time or requiring an additional container for collection. The concentrate outlet valve 91 is located on the concentrate pipeline 4A and is used to open and close the discharge of concentrate to the concentrate chamber 70b. When the second filter element 111B is working, the concentrate outlet valve 91 is open to allow the concentrate to be discharged smoothly. When the second filter element 111B stops working, the concentrate outlet valve 91 is closed to prevent the water in the concentrate chamber 70b from flowing back to the second filter element 111B due to pressure changes or shaking, thus preventing the concentrate from contaminating the membrane element or diluting the pure water.

[0095] In some embodiments, the coffee purification device 100 further includes an overflow valve 92, which is a pressure safety protection element. The overflow valve 92 is installed on the concentrate pipeline 4A to provide an overpressure protection mechanism for the concentrate pipeline 4A. It can directly monitor the actual pressure state within the pipeline, resulting in a more timely and accurate response. The overflow valve 92 is located downstream of the concentrate outlet valve 91. When the concentrate outlet valve 91 is open, the downstream pipeline may experience pressure buildup due to blockage, a full concentrate chamber 70b, or backflow of pressure within the concentrate chamber 70b. The overflow valve 92 is used to open when the pressure in the concentrate pipeline 4A exceeds a preset threshold, providing a pressure relief path for the concentrate. In other words, the overflow valve 92 has an automatic pressure relief capability. Through the pressure relief function that automatically opens at a preset threshold, the concentrate pipeline 4A can autonomously cope with abnormal pressure in the downstream section without human intervention. For example, when the concentrate outlet valve 91 is open normally, but the channel from the end of the concentrate pipeline 4A to the concentrate chamber 70b is blocked by foreign objects or the concentrate chamber 70b is full, resulting in poor drainage, the pressure in the downstream pipeline section will continue to rise. The overflow valve 92 automatically opens when the pressure exceeds the threshold, temporarily discharging the concentrate through the pressure relief port, thus preventing the pipeline from bursting or the joint from loosening due to the continuous increase in pressure.

[0096] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0097] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0099] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0100] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A coffee purification device, characterized in that, It includes a hot water circuit and a cold water circuit that is at least partially independent of the hot water circuit, the cold water circuit including: The water supply treatment module includes a filtration component for filtering raw water; A low-temperature water preparation module is arranged downstream of the water supply treatment module along the water flow direction. The low-temperature water preparation module includes a cold water tank and a refrigeration assembly. The cold water tank has a cold water chamber connected to the outlet of the filtration assembly and is used at least to store water cooled by the refrigeration assembly. An extraction module is arranged downstream of the low-temperature water preparation module along the water flow direction. The extraction module is connected to the cold water chamber and is used for low-temperature extraction of coffee concentrate.

2. The coffee purification device according to claim 1, characterized in that, The hot water circuit includes: The pressurized instant heating component is arranged downstream of the water supply treatment module along the water flow direction and is used to heat the water flowing into the pressurized instant heating component during operation. The pressurized instant heating component and the low-temperature water preparation module are arranged in parallel.

3. The coffee purification device according to claim 1, characterized in that, The cold water circuit includes: A water pump, wherein the inlet of the water pump is connected to the outlet of the cold water tank; The rated output pressure of the water pump is P, and P satisfies: 0 bar < P ≤ 4 bar.

4. The coffee purification device according to claim 3, characterized in that, The outlet pump includes a low-pressure pump or a pressure-adjustable rotary pump.

5. The coffee purification device according to claim 3, characterized in that, The coffee purification device also includes a control module; the extraction module also includes: Extraction chamber; and A flow control device is installed between the output end of the water pump and the extraction chamber, and is electrically connected to the control module. The flow control device is used to detect the flow rate of water flowing into the extraction chamber and send it to the control module. The control module adjusts the operating status of the outlet pump at least according to the water flow rate.

6. The coffee purification device according to claim 5, characterized in that, The flow detection device includes a flow meter.

7. The coffee purification device according to claim 1, characterized in that, The low-temperature water preparation module includes: An ice storage compartment is movably disposed within the cold water tank, having a storage location within the cold water tank and an ice-retrieving location exposed outside the cold water tank. The refrigeration component is used to selectively cool flowing water into cold water or freeze it into ice. The cold water chamber is used to store the cold water, and the ice storage chamber is used to store the ice.

8. The coffee purification device according to claim 7, characterized in that, The low-temperature water preparation module includes: A position sensor is installed on the side of the cold water tank facing the ice storage compartment, and is used to generate a status signal indicating that the ice storage compartment is in place when the ice storage compartment is in the storage position.

9. The coffee purification device according to claim 7, characterized in that, The upper part of the ice storage chamber has a detection port; the low-temperature water preparation module includes: An infrared detection component is arranged corresponding to the detection port, and the detection light path of the infrared detection component illuminates the ice storage compartment through the detection port.

10. The coffee purification device according to claim 7, characterized in that, The ice storage chamber is located above the cold water chamber; the refrigeration assembly includes: Ice trays have internal heat exchange channels for refrigerant flow, used for heat exchange with water; The low-temperature water preparation module includes: A water receiving component is arranged below the ice tray and has a water receiving groove, with a portion of the water receiving groove extending from top to bottom into the cold water cavity for receiving the cold water and guiding the cold water into the cold water cavity.

11. The coffee purification device according to claim 10, characterized in that, The refrigeration assembly also includes a compressor and a condenser, wherein the compressor, the condenser, and the ice tray are connected to form at least part of a refrigeration cycle; A refrigerant branch pipe is provided between the compressor and the ice tray, and the refrigeration assembly further includes: A refrigerant valve is installed on the refrigerant branch pipe and is used to control the on / off state of the refrigerant branch pipe.

12. The coffee purification device according to claim 10, characterized in that, The ice storage compartment has an upward-facing opening. The ice grid is located above the ice storage compartment and has multiple ice-making slots. The openings of the ice-making slots face the side where the ice storage compartment is located, and the openings of the ice-making slots are angled to the vertical direction so that any ice that falls off will fall into the ice storage compartment.

13. The coffee purification device according to claim 12, characterized in that, The low-temperature water preparation module includes: A water supply pipe is connected to the cold water chamber and extends from bottom to top. A circulating pump, installed on the water supply pipe, is used to transport water from the cold water chamber to the water supply pipe; and A diversion pipe is connected to and communicates with the upper end of the water supply pipe, located above the ice grid. The diversion pipe has multiple diversion ports, which are connected to the ice trough.

14. The coffee purification device according to claim 1, characterized in that, The low-temperature water preparation module further includes at least one of the components disposed within the cold water chamber: A water level detection device is used to detect the water level in the cold water chamber; A temperature sensor is used to detect the water temperature inside the cold water chamber; The sterilization module is used to sterilize the water in the cold water chamber.

15. The coffee purification device according to claim 1, characterized in that, The coffee purification device also includes a raw water tank, and the filter assembly is connected to the raw water tank for filtering the raw water in the raw water tank; the filter assembly includes: The first filter element has a first inlet, a first outlet, a secondary inlet, and a secondary outlet, wherein the first inlet is connected to the raw water tank. The second filter element has a second inlet connected to the first outlet and a second outlet connected to the second inlet; The secondary water outlet is connected to the cold water chamber.

16. The coffee purification device according to claim 15, characterized in that, The first filter element includes a pre- and post-filter composite element, and the second filter element includes a reverse osmosis filter element. The first filter element and the second filter element are arranged side by side.

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