Water treatment apparatus and water route control method for water treatment apparatus

Abstract

The application relates to the technical field of water treatment equipment, and relates to a water treatment equipment and a water route control method of the water treatment equipment. The water treatment equipment comprises a water route structure, a filter core assembly, a temperature adjusting device, a heat exchange water route and a liquid route control device; the heat exchange water route comprises an input water route and an output water route; an input end of a heat exchange element is connected with at least one of a wastewater end, a clean water end and a water inlet through a plurality of input water routes; an output end of the heat exchange element is connected with at least one of a wastewater outlet, a heat exchange assembly, a water storage tank and a water inlet end through a plurality of output water routes; and the liquid route control device is used for switching the communication between the heat exchange element and the plurality of input water routes and the output water routes. The water treatment equipment of the embodiment adopts the temperature adjusting device of the water route heat exchange, the plurality of input water routes of the heat exchange element are connected with the wastewater end, the clean water end and the water inlet, and the liquid route control device is used for flexibly switching different input water routes and corresponding output water routes, so that efficient heat conversion between multiple water sources is realized.

Description

Technical Field

[0001] This application relates to the field of water treatment equipment technology, and in particular to a water treatment device and a water circuit control method for the water treatment device. Background Technology

[0002] Most existing water purification equipment uses air cooling for water temperature regulation, primarily employing fans and heat sinks to cool or refrigerate the water tank. However, air cooling is easily affected by ambient temperature, especially in high-temperature environments where its efficiency decreases, leading to unstable cooling performance. Furthermore, air-cooled structures are typically bulky, and their heat dissipation relies on airflow, limiting the design flexibility and overall performance improvement of the water purification equipment.

[0003] To address the aforementioned issues, some existing water purification devices incorporate water circuit heat exchange designs. However, these often employ a single heat exchange path, lacking the flexibility to switch between different heat exchange requirements. This limits heat exchange efficiency and fails to optimize both rapid cooling and heating effects. Furthermore, the single heat exchange structure has shortcomings in flow control, affecting the water flow rate and heat exchange efficiency, thus hindering efficient water temperature regulation and effective water circuit sterilization.

[0004] Furthermore, the existing heat exchange devices have complex connection methods and insufficient precision in liquid circuit control, making it difficult to achieve efficient switching of the heat exchange circuit and limiting the overall performance improvement of the temperature control device. Insufficient optimization of flow rate and heat exchange results in both cooling and heating effects failing to reach ideal levels, affecting the ice-making speed and sterilization effect of water purification equipment. There is an urgent need for a new water circuit structure and liquid circuit control technology that can flexibly adjust the heat exchange path and improve heat exchange efficiency. Summary of the Invention

[0005] In view of this, this application provides a water treatment device to solve the problem of poor cooling performance of existing water purification equipment.

[0006] The first aspect of this application provides a water treatment device, comprising:

[0007] The water system is equipped with an inlet, a wastewater outlet, and an outlet.

[0008] The filter element assembly has an inlet end, a clean water end and a wastewater end, wherein the wastewater end is connected to the wastewater outlet and the clean water end is connected to the outlet.

[0009] A temperature control device includes a heat exchanger and a heat exchange assembly, wherein the heat dissipation end of the heat exchanger is thermally coupled to the heat exchange assembly;

[0010] A heat exchange circuit includes an input water circuit and an output water circuit. The input end of the heat exchanger is connected to at least one of the wastewater end, the clean water end, and the water inlet through multiple input water circuits. The output end of the heat exchanger is connected to at least one of the wastewater inlet, the heat exchange assembly, and the water inlet through multiple output water circuits.

[0011] A liquid circuit control device is connected to the heat exchange water circuit, and the liquid circuit control device is used to switch the heat exchange element connected to multiple input water circuits and the output water circuit.

[0012] In one possible implementation, the input water path includes a first input water path, the input end of which is connected to the wastewater end, and the output end of which is connected to the input end of the heat exchanger and the wastewater outlet, respectively. The liquid path control device includes a first water path valve disposed on the first input water path, which is used to control the on / off connection between the heat exchanger and the wastewater end.

[0013] And / or the input water path includes a second input water path, the input end of the second input water path is connected to the purified water end, the output end of the second input water path is respectively connected to the input end of the heat exchanger and the water outlet, and the liquid path control device includes a second water path valve provided on the second input water path, the second water path valve is used to control the on / off connection between the heat exchanger and the purified water end;

[0014] And / or the input water path includes a third input water path, which is connected to the water inlet and the heat exchanger respectively.

[0015] In one possible implementation, the heat exchange assembly includes a circulation pump connected to the heat exchanger to form a loop.

[0016] In one possible implementation, the heat exchange assembly further includes a heat exchange container connected to the circulating pump and the heat exchange element to form a loop.

[0017] In one possible implementation, the heat exchange assembly further includes a hot water tank, the heat exchange element being thermally coupled to the hot water tank and used to heat the hot water tank.

[0018] In one possible implementation, the water treatment equipment further includes a water storage tank, which is connected to the purified water end and the water outlet respectively, and the cold end of the heat exchanger is thermally coupled to the water storage tank.

[0019] In one possible implementation, the water tank includes a refrigeration section and a cold storage section, the refrigeration section being connected to the cold storage section and the refrigeration section being thermally coupled to the cold end of the heat exchanger.

[0020] In one possible implementation, the water tank further includes a first cold water pump, which is connected to both the refrigeration unit and the cold storage unit.

[0021] And / or, the water tank further includes a second cold water pump, which is connected to the cold storage section and is used to pump cold water outward.

[0022] A second aspect of this application provides a water circuit control method for a water treatment device, applied to the water treatment device as described in any of the above claims, comprising the following steps:

[0023] Step S1: The liquid circuit control device switches the heat exchanger to connect with multiple water sources, including the water source output from the wastewater end, the water source output from the purified water end, and the water source input from the inlet.

[0024] Step S2: When the liquid circuit control device controls the input of the first water source, including the wastewater output, into the heat exchanger, at least one of the following control modes is executed:

[0025] Mode A1: Drives the first water source to circulate within the temperature control device;

[0026] Mode A2: Drive the first water source to discharge through the wastewater outlet;

[0027] Step S3: When the liquid circuit control device controls the second water source, which only outputs from the purified water end, to be input into the heat exchanger, at least one of the following control modes is executed:

[0028] Mode B1: Drives the second water source to circulate within the temperature control device;

[0029] Mode B2: Drive the second water source to discharge through the wastewater outlet;

[0030] Step S4: When the liquid circuit control device controls the input of a third water source, including the water output from the inlet, into the heat exchanger, at least one of the following control modes is executed:

[0031] Mode C1: Drive the third water source to circulate within the temperature control device;

[0032] Mode C2: Drive the third water source to discharge through the wastewater outlet;

[0033] Mode C3: Drives the third water source to deliver water to the filter assembly.

[0034] In one possible implementation, the step of executing at least one of the following control modes when the liquid circuit control device controls the input of a third water source, including the output from the inlet, into the heat exchanger further includes the following step:

[0035] When the liquid circuit control device controls a third water source that includes the water output from the inlet but does not include the first water source, it executes at least one of the following control modes:

[0036] Mode C1: Drive the third water source to circulate within the temperature control device;

[0037] Mode C2: Drive the third water source to discharge through the wastewater outlet;

[0038] Mode C3: Drives the third water source to deliver water to the filter assembly.

[0039] Implementing the embodiments of this application has the following beneficial effects:

[0040] The water treatment equipment implemented in this embodiment employs a water-based heat exchange temperature control device. Multiple input water channels of the heat exchanger are connected to the wastewater end, the clean water end, and the inlet, respectively. Combined with a liquid circuit control device, different input water channels and corresponding output water channels can be flexibly switched, achieving efficient heat conversion between various water sources. Compared to traditional air-cooling methods, this implementation effectively avoids the influence of ambient temperature on the cooling effect, maintaining the stable performance of the temperature control device.

[0041] Furthermore, this implementation increases water flow and heat exchange area through the hot water exchange circuit, effectively improving heat exchange efficiency and achieving rapid cooling. The thermal coupling design between the water storage tank and the cold end of the heat exchange components further enhances the stability of cold water storage and temperature control, promoting improved cooling performance.

[0042] In the water treatment equipment of this embodiment, a liquid circuit control device enables multi-channel mixing and switching between the heat exchanger and multiple input water channels and corresponding output water channels. This allows for flexible switching of water channels based on the type of the input mixed water source, achieving efficient heat conversion and rational pipeline allocation. Simultaneously, the water circulation heat exchange process has a sterilization effect, improving the hygienic performance of the water treatment equipment. This embodiment features a compact structure, with heat exchange components replacing traditional air-cooled heat sinks and fans, reducing equipment size and optimizing the overall design flexibility of the water treatment equipment, which is beneficial for product miniaturization and performance improvement. Attached Figure Description

[0043] 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A perspective view of the water treatment equipment in an embodiment of the present invention is shown;

[0045] Figure 2A schematic diagram of the water circuit of the water treatment device in an embodiment of the present invention is shown;

[0046] Figure 3 A schematic flowchart of the water circuit control method of the water treatment equipment in an embodiment of the present invention is shown;

[0047] Figure 4 A schematic diagram of a water circuit control method for a water treatment device according to an embodiment of the present invention is shown.

[0048] Figure label:

[0049] 10. Water treatment equipment;

[0050] 100. Waterway structure; 110. Inlet; 120. Wastewater outlet; 130. Clean water outlet; 140. Cold water outlet;

[0051] 200. Filter element assembly; 210. Filter element mounting base; 211. Water inlet; 212. Wastewater inlet; 213. Clean water inlet; 220. Filter element booster pump;

[0052] 300. Water tank; 310. Refrigeration unit; 320. Cold storage unit; 330. First cold water pump; 340. Second cold water pump;

[0053] 400. Temperature control device; 410. Heat exchanger; 420. Heat exchange assembly; 421. Circulation pump; 422. Heat exchange container; 511. Inlet valve; 512. Wastewater valve; 513. Purified water valve; 514. Cold water valve; 521. Circulation valve; 522. Refrigeration valve; 523. Disinfection valve; 524. Filter valve; 530. First water circuit valve; 540. Second water circuit valve;

[0054] 600. Shell structure;

[0055] 20. Water purifier filter cartridge. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] Most existing water purification equipment uses air cooling for water temperature regulation, primarily employing fans and heat sinks to cool or refrigerate the water tank. However, air cooling is easily affected by ambient temperature, especially in high-temperature environments where its efficiency decreases, leading to unstable cooling performance. Furthermore, air-cooled structures are typically bulky, and their heat dissipation relies on airflow, limiting the design flexibility and overall performance improvement of the water purification equipment.

[0058] To address the aforementioned issues, some existing water purification devices incorporate water circuit heat exchange designs. However, these often employ a single heat exchange path, lacking the flexibility to switch between different heat exchange requirements. This limits heat exchange efficiency and fails to optimize both rapid cooling and heating effects. Furthermore, the single heat exchange structure has shortcomings in flow control, affecting the water flow rate and heat exchange efficiency, thus hindering efficient water temperature regulation and effective water circuit sterilization.

[0059] Furthermore, the existing heat exchange devices have complex connection methods and insufficient precision in liquid circuit control, making it difficult to achieve efficient switching of the heat exchange circuit and limiting the overall performance improvement of the temperature control device. Insufficient optimization of flow rate and heat exchange results in both cooling and heating effects failing to reach ideal levels, affecting the ice-making speed and sterilization effect of water purification equipment. There is an urgent need for a new water circuit structure and liquid circuit control technology that can flexibly adjust the heat exchange path and improve heat exchange efficiency.

[0060] Based on this, see Figures 1 to 4 As shown, this embodiment of the invention provides a water treatment device 10, which includes a water circuit structure 100, a filter element assembly 200, a temperature control device 400, a hot water exchange circuit, and a liquid circuit control device; the water circuit structure 100 is provided with an inlet 110, a wastewater outlet 120, and an outlet; the filter element assembly 200 is provided with an inlet end 211, a purified water end 213, and a wastewater end 212, with the wastewater end 212 connected to the wastewater outlet 120 and the purified water end 213 connected to the outlet; the temperature control device 400 includes a heat exchange element 410 and a heat exchange assembly 420, wherein the heat exchange element 410... The heat dissipation end is thermally coupled to the heat exchange component 420; the heat exchange circuit includes an input water circuit and an output water circuit. The input end of the heat exchange component 410 is connected to at least one of the wastewater end 212, the clean water end 213 and the water inlet 110 through multiple input water circuits. The output end of the heat exchange component 410 is connected to at least one of the wastewater inlet 120, the heat exchange component 420 and the water inlet 211 through multiple output water circuits. The liquid circuit control device is connected to the heat exchange circuit and is used to switch the heat exchange component 410 to be connected to multiple input water circuits and the output water circuit.

[0061] The water treatment equipment 10 in this embodiment employs a water-based heat exchange temperature control device 400. Multiple input water channels of the heat exchanger 410 are connected to the wastewater end 212, the clean water end 213, and the inlet 110, respectively. Combined with a liquid circuit control device, different input water channels and corresponding output water channels can be flexibly switched, achieving efficient heat conversion between various water sources. Compared to traditional air-cooling methods, this embodiment effectively avoids the influence of ambient temperature on the cooling effect, maintaining the stable performance of the temperature control device 400.

[0062] In one embodiment, the water treatment device 10 further includes a water storage tank 300, which is connected to the purified water end 213 and the water outlet, respectively, and the heat dissipation end of the heat exchanger 410 is thermally coupled to the heat exchange component 420. This embodiment increases the water flow rate and heat exchange area through the hot water exchange circuit, effectively improving the heat exchange efficiency and achieving rapid cooling. The thermal coupling design between the water storage tank 300 and the cold end of the heat exchanger 410 further enhances the stability of cold water storage and temperature control, promoting the improvement of cooling effect.

[0063] In the water treatment equipment 10 of this embodiment, a liquid circuit control device enables multi-channel mixing and switching between the heat exchanger 410 and multiple input water circuits and corresponding output water circuits. This allows for flexible switching of water circuits based on the type of the input mixed water source, achieving efficient heat conversion and rational pipeline allocation. Simultaneously, during the water circulation heat exchange process, the circulation of high-temperature water (e.g., hot water at no less than 55°C) in the pipelines achieves thermal sterilization of the water storage tank 300 and the filter element, improving the hygienic performance of the water treatment equipment 10. This embodiment features a compact structure, with the heat exchanger 420 replacing traditional air-cooled heat sinks and fans, reducing equipment size and optimizing the overall design flexibility of the water treatment equipment 10, which is beneficial for product miniaturization and performance improvement.

[0064] Specifically, the water outlet includes a clean water outlet 130 and a cold water outlet 140. The clean water outlet 130 is connected to the filter element assembly 200 and is used to output filtered water, while the cold water outlet 140 is connected to the water storage tank 300 and is used to output cold water.

[0065] Furthermore, to achieve better heat exchange performance, the heat exchanger 410 can be made of a high thermal conductivity material, such as copper or aluminum alloy. Copper is preferred due to its excellent thermal conductivity, which accelerates heat transfer and improves the response speed of water temperature regulation. When the cold end of the heat exchanger 410 is thermally coupled to the water tank 300, clamping, welding, or placing the cold end of the heat exchanger 410 within the water tank 300 can be used to ensure good thermal contact, reduce thermal resistance, and improve heat exchange efficiency. Simultaneously, the structure of the heat exchanger 410 can be designed as a multi-channel flow structure. Specifically, the inlet 110 and wastewater outlet 120 in the water channel structure 100 are connected to the heat exchanger 410 through multiple branches, forming multiple parallel heat exchange channels. This multi-channel design increases the contact area between the water and the heat exchanger 410, improves the heat exchange rate, and the uniform flow distribution helps reduce local overheating or undercooling.

[0066] Specifically, the connection between the heat exchanger 410 and the heat exchange assembly 420 can be achieved by using quick couplings or modular connection structures, which facilitates disassembly and maintenance, and improves the maintainability and service life of the equipment.

[0067] The number of inlet 110 and wastewater outlet 120 in the water circuit structure 100 can be adjusted according to the design requirements of the water treatment equipment 10. Specifically, the number of inlet 110 and wastewater outlet 120 can be one, two, or more, and there is no unique limitation. Setting multiple inlet 110 or wastewater outlet 120 can realize segmented heat exchange or multi-path parallel heat exchange, further improving the flexibility of water flow regulation and heat exchange efficiency, and meeting the diverse needs of different operating environments.

[0068] It should be noted that the water flow rate has a significant impact on heat exchange efficiency. When adjusting the water flow rate using the liquid circuit control device, the flow rate can be set to multiple levels, the specific level to be determined based on actual design requirements. When the flow rate is too low, heat exchange is insufficient, leading to reduced cooling or heating efficiency; while when the flow rate is too high, although the heat exchange speed increases, it may increase system energy consumption and pump load, reducing the overall energy efficiency ratio. Therefore, reasonable control of the flow rate is crucial for achieving efficient and energy-saving water temperature regulation.

[0069] In some embodiments, the water treatment equipment 10 further includes a housing structure 600, which serves as an installation carrier for mounting the water circuit structure 100, filter element assembly 200, water storage tank 300, and temperature control device 400. The housing structure 600 not only provides robust mechanical support for each functional component but also forms the overall framework of the equipment, ensuring a reasonable layout and secure fixation of each component.

[0070] The shell structure 600 can internally house a middle frame and a cover plate. The middle frame serves as the internal skeleton, supporting and securing the various functional modules. The middle frame is typically made of metal or high-strength engineering plastics to ensure structural rigidity and durability. The middle frame has pre-drilled mounting holes and slots to facilitate precise positioning and secure installation of components such as the water circuit structure 100, filter element assembly 200, water tank 300, and temperature control device 400. By rationally designing the middle frame structure, space wastage between components can be effectively reduced, achieving a compact internal structure and improving overall space utilization.

[0071] The cover and middle frame are detachably connected, facilitating routine maintenance and component replacement. This connection can be achieved using screws, snap-fit ​​connections, or magnetic attachment, depending on the specific usage environment and maintenance needs. Screw-fixed connections offer a stable structure suitable for applications requiring frequent disassembly and reassembly; snap-fit ​​connections are simple and quick, ideal for user-managed maintenance; and magnetic attachments enhance both ease of installation and removal and overall aesthetics. The detachable cover design allows users or maintenance personnel to easily open the equipment for filter replacement, internal cleaning, or troubleshooting, significantly improving the usability and maintenance efficiency of the water treatment equipment 10.

[0072] In addition, the shell structure 600 can also be equipped with a heat insulation layer or sealing strip to enhance the thermal insulation performance and waterproof and dustproof capabilities of the equipment, further improving the stability and service life of the water treatment equipment 10. The material selection for the shell can also vary depending on the application environment, such as using environmentally friendly and durable materials like ABS plastic and polycarbonate, which have good corrosion resistance and mechanical strength, while also meeting the aesthetic requirements of the appearance design.

[0073] It should be noted that the size and shape of the housing structure 600 can be optimized based on the volume and layout of the internal components. The size can be compact, medium, or large, and can be customized according to the installation environment and user needs. In the compact design, the housing reduces volume through modular integration, facilitating installation on desktops or kitchen countertops; the medium design balances performance and space, suitable for home and office environments; and the large design is suitable for applications with high requirements for cooling capacity and water treatment capabilities.

[0074] Specifically, the heat exchanger 410 includes, but is not limited to, a combination of a semiconductor cooling chip, a compressor, and a heat-conducting element. This combination is designed to optimize the cooling efficiency and heat exchange performance of the water treatment equipment 10, thereby meeting the different water temperature regulation needs of various users.

[0075] In one embodiment, a thermoelectric cooler, as a highly efficient cooling element, has advantages such as small size, light weight, and no moving parts. Its working principle is based on the Peltier effect, where the flow of current generates a temperature difference within the semiconductor material, thereby achieving heat transfer. In this embodiment, the cold end of the thermoelectric cooler can directly contact the water tank 300, thereby quickly and effectively reducing the temperature of the water in the tank. It should be noted that the number of thermoelectric coolers can be one or more, and the specific configuration can be adjusted according to the required cooling capacity and space constraints. Parallel configuration of multiple thermoelectric coolers can improve the cooling rate and further enhance heat exchange efficiency. The heat dissipation end of the thermoelectric cooler achieves heat conduction through thermal coupling with the heat exchange component 420, and heat dissipation is achieved through the heat exchange component 420.

[0076] In another embodiment, the compressor, as the core component of a traditional refrigeration system, transfers heat by compressing the refrigerant. Its working principle involves compressing low-pressure gas into high-pressure gas, and removing or absorbing heat through condensation and evaporation processes, thereby achieving more flexible power regulation and higher energy efficiency.

[0077] In some embodiments, a thermoelectric cooler and a compressor cooling scheme can be combined. By combining these two cooling schemes, the heat exchanger 410 can flexibly switch between cooling and heating to meet diverse user needs for water temperature. For example, when rapid cooling is required, the system can prioritize the use of the thermoelectric cooler for initial cooling, and then further reduce the water temperature by combining it with the operation of the compressor; when heating is required, the system can utilize the heat from the compressor by changing the flow direction of the refrigerant. This flexible temperature regulation mechanism significantly enhances the functionality of the water treatment equipment 10.

[0078] The liquid circuit control device also includes a control module, which is connected to each valve body via communication lines and is responsible for real-time control and management of the valve body's opening and closing status. The control module not only enables automatic valve switching but also dynamically adjusts the valve body status based on sensor feedback (such as flow sensors, pressure sensors, and water quality sensors), optimizing the operating efficiency and safety of the water circuit system. For example, when filter blockage or abnormal wastewater discharge is detected, the control module can automatically close the inlet valve 511 or wastewater valve 512 and issue an alarm to ensure safe system operation.

[0079] The specific implementation methods of the control module are diverse, covering various industrial and embedded control units, such as programmable logic controllers (PLCs), STM32 microcontrollers based on the ARM Cortex-M core, general-purpose microcontrollers, and field-programmable gate arrays (FPGAs). The selection of different controllers can be rationally configured according to the complexity of the water treatment equipment 10, the response speed requirements, and the cost budget. PLCs have powerful industrial control capabilities and stability, making them suitable for large or complex systems; STM32 and microcontrollers are suitable for small-size, low-power embedded applications; FPGAs provide highly flexible parallel processing capabilities, making them suitable for occasions with special customized requirements for control logic.

[0080] The control module is typically installed inside the equipment and can collect equipment operation data in real time, execute preset programs, and achieve precise control and status monitoring of the liquid circuit valves. This module can also connect to external smart terminals or cloud platforms via a communication interface, supporting remote management, fault diagnosis, and maintenance, thereby improving the intelligence level and user experience of the water treatment equipment 10.

[0081] Through the above structural design, the liquid circuit control device not only achieves precise regulation of the influent, wastewater, purified water, and cold water flow paths, but also enhances the system's flexibility and safety by incorporating automated control technology. This design effectively avoids human error, shortens response time, and improves the overall stability and reliability of the water treatment equipment.

[0082] In one embodiment, the input water route consists of a first input water route, a second input water route, and a third input water route, each undertaking different water source delivery and heat exchange functions. The liquid circuit control device realizes flexible switching of multiple paths and efficient management of the heat exchange water route through the connection relationship between the valves and heat exchange components 410.

[0083] Specifically, the input end of the first input water path is connected to the wastewater end 212, and the output end is connected to both the input end of the heat exchanger 410 and the wastewater outlet 120. The first water path valve 530 is used to control the opening and closing of the connection between the heat exchanger 410 and the wastewater end 212. When the first water path valve 530 is closed, the wastewater is directly discharged from the filter element assembly 200, ensuring normal wastewater discharge; when the first water path valve 530 is open, the wastewater is introduced into the heat exchanger 410 for heat exchange, improving the recovery and utilization rate of wastewater heat energy. At this time, the liquid path control device can also control the output water path of the heat exchanger 410 to connect with the wastewater outlet 120 to realize the wastewater discharge function, or switch to connect with the heat exchanger assembly 420 to complete the hot water circulation, realize the recovery and reuse of wastewater waste heat, and improve the overall energy efficiency of the system.

[0084] The input end of the second water input path is connected to the purified water end 213, and the output end is connected to the input end of the heat exchanger 410 and the purified water outlet 130. The second water path valve 540 controls the connection status between the heat exchanger 410 and the purified water end 213. When the valve is closed, purified water is directly output from the filter element assembly 200 to the purified water outlet 130, ensuring a continuous and stable supply of purified water; when the valve is open, purified water is delivered to the heat exchanger 410 for heat exchange, meeting the water temperature regulation requirements of different temperatures. At this time, the liquid path control device can control the output water path of the heat exchanger 410 to connect with the wastewater outlet 120 to realize wastewater discharge, or connect with the heat exchanger assembly 420 to realize hot water circulation, or control the heat exchanger 410 to connect with the water storage tank 300, using high-temperature hot water to sterilize and disinfect the inside of the water storage tank 300, ensuring the hygiene of the water quality in the water storage tank.

[0085] The third water input path is connected to the inlet 110, accepting external water sources such as tap water, and directing it to the heat exchanger 410. This connection allows the system to utilize external water sources for auxiliary heat exchange and temperature regulation. The liquid circuit control device connects the output water path of the heat exchanger 410 to the wastewater outlet 120 for wastewater discharge; or it connects to the heat exchange assembly 420 for hot water circulation; it can also control the connection between the heat exchanger 410 and the filter assembly 200, sending the heat-exchanged water into the filter assembly 200 for filtration, and then into the water storage tank 300 for high-temperature sterilization, thereby improving the hygiene and safety of the entire water system.

[0086] In summary, through the rational configuration of the first, second, and third input water paths and the precise control of the first water path valve 530 and the second water path valve 540 in the liquid path control device, the water treatment equipment 10 can achieve flexible switching and efficient heat exchange between wastewater, purified water, and external water sources in the heat exchange element 410. Simultaneously, it accommodates multiple functions such as wastewater discharge, heat exchange circulation, and high-temperature sterilization, greatly improving the efficiency of water temperature regulation, system energy saving, and water quality safety assurance capabilities. This multi-path heat exchange design not only enhances the adaptability and flexibility of the equipment but also meets the high standards required by users for diverse water quality and temperature needs.

[0087] In one embodiment, the liquid circuit control device further includes a temperature sensor, which monitors the temperature signal in the heat exchange circuit in real time and feeds back the collected temperature data to the control module. The control module intelligently regulates the water source output by the heat exchanger 410 according to a preset temperature threshold, thereby realizing automatic switching of the water flow path.

[0088] Specifically, when the temperature sensor detects that the water temperature in the hot water exchange circuit exceeds the set threshold, the control module will instruct the liquid circuit control device to guide the hot water exchange to the wastewater outlet 120 for waste discharge treatment, so as to avoid the high temperature water circulating in the system, prevent the equipment from overheating or the water quality from deteriorating, and ensure the safe and stable operation of the system and the hygiene of the water quality.

[0089] Conversely, when the water temperature does not exceed the preset threshold, the control module controls the hot water to flow along the circulation path inside the water treatment equipment 10, achieving efficient heat exchange and recycling of the water source between the water storage tank 300, heat exchange element 410, and heat exchange component 420. At this time, the water temperature in the water circuit remains within a reasonable range, continuously providing a stable water temperature regulation effect, while improving energy efficiency and saving energy consumption through circulating heat exchange.

[0090] This temperature sensing and intelligent control mechanism ensures that the temperature of the hot water exchange circuit remains within a controllable range. This avoids equipment damage and water quality safety hazards caused by excessive temperature, while also achieving efficient and energy-saving water temperature regulation, thus improving the performance stability and operational safety of the water treatment equipment 10. Furthermore, the control module can combine data from other sensors (such as flow sensors and water quality sensors) for comprehensive judgment, further optimizing the water circuit control strategy to meet the precise water temperature management needs under different operating conditions. The placement of the temperature sensors can be flexibly set; they can be used to detect the temperature of the hot water source in the heat exchange element 410 or to monitor the temperature signal of the heat exchange component 420. The specific design can be adjusted according to actual needs and system structure, without a single limitation. Multi-point temperature acquisition provides more comprehensive temperature data support for the liquid circuit control device, further optimizing the liquid circuit switching strategy and improving heat exchange efficiency and equipment response speed.

[0091] Specifically, the heat exchange assembly 420 includes heat exchange pipes, with both ends of the heat exchange pipes connected to the input and output ends of the heat exchange element 410, respectively, thus forming a closed loop. This design allows the heat exchange medium in the temperature control device 400 to circulate between the heat exchange element 410 and the heat exchange pipes, achieving efficient heat transfer and dissipation.

[0092] In this circulation loop, the heat exchange medium absorbs or releases heat when passing through the heat exchanger 410, and then flows through the heat exchange pipes. The large surface area of ​​the heat exchange pipes effectively dissipates the heat to the external environment or other heat dissipation devices, completing the heat exchange process. The heat exchange pipes can be designed with a serpentine, coiled, or multi-channel structure to increase the contact area with air or the cooling medium and improve heat dissipation efficiency.

[0093] Through this circulation loop configuration, the temperature control device 400 can continuously and stably maintain the temperature of the heat exchange medium within the ideal range, preventing performance degradation due to heat accumulation and ensuring the cooling effect and speed of the water treatment equipment 10. Furthermore, the closed structure of the circulation loop also helps reduce the risk of heat exchange medium leakage, improving the safety and reliability of the system.

[0094] In one embodiment, to prevent wastewater backflow and contamination of the water purification filter element assembly 200, a one-way valve is an effective technical means in the liquid circuit control device. The input end of the one-way valve is connected to the filter element assembly 200, and the output end is connected to the wastewater outlet 120 and the heat exchanger 410, respectively. By setting this one-way valve, it can be ensured that wastewater can only be discharged in one direction, preventing the wastewater output from the heat exchanger 410 from flowing back into the filter element assembly 200, avoiding impurities or bacteria carried in the wastewater from entering the filter element in reverse, and ensuring the service life of the filter element assembly 200 and the safe and stable quality of purified water.

[0095] Check valves can generally take various forms, such as spring-loaded check valves, ball-type check valves, or diaphragm-type check valves. The specific choice can be flexibly determined based on the system's water pressure, flow rate, and installation space. Spring-loaded check valves are highly responsive, compact, and simple in structure, making them suitable for water treatment equipment with limited installation space. Ball-type check valves offer excellent sealing performance and strong corrosion resistance, making them suitable for long-term operating environments. Diaphragm-type check valves effectively reduce flow resistance and improve water flow efficiency. Specifically, check valves can be made of food-grade plastic, stainless steel, or copper alloy to balance durability and safety.

[0096] In another embodiment, to further optimize the wastewater discharge path and prevent backflow contamination, the wastewater outlet 120 is designed to include two parts: a first wastewater outlet and a second wastewater outlet. The filter element assembly 200 is connected to the first wastewater outlet, and the heat exchanger 410 is connected to the second wastewater outlet, forming two independent wastewater paths. This design allows the wastewater from the filter element assembly 200 and the wastewater from the heat exchanger 410 to be discharged through different paths, avoiding cross-flow of the two wastewater paths and thus more effectively preventing wastewater from flowing back into the filter element assembly 200.

[0097] By setting up separate first and second wastewater inlets, the risk of cross-contamination in the water system can be reduced. Simultaneously, it facilitates independent adjustment and control of the flow and pressure of the two wastewater lines, improving the overall stability and safety of the system. Specifically, there can be one first and one second wastewater inlet, or two or more can be set according to the design requirements of the water treatment equipment 10, enabling segmented discharge or parallel discharge of multiple wastewater lines, further improving wastewater discharge efficiency and the flexibility of water system management.

[0098] Furthermore, the pipe connections and sealing structures at the first and second wastewater inlets can utilize quick-connect fittings or snap-fit ​​connections for easy disassembly and maintenance, ensuring reliable sealing and preventing wastewater leakage. This design not only improves the ease of equipment maintenance but also enhances the overall system's safety performance.

[0099] In summary, whether it is by setting a one-way valve to achieve unidirectional wastewater flow or by setting multiple wastewater outlets to achieve independent wastewater discharge, both methods effectively avoid wastewater backflow from contaminating the filter element assembly 200, ensuring the water quality safety of the water treatment equipment 10 and the long-term stable use of the filter element, thereby improving the reliability of the equipment and the user experience.

[0100] Furthermore, the heat exchange assembly 420 includes a circulation pump 421, which is connected to the heat exchange element 410 via a pipe to form a loop.

[0101] By setting the circulation pump 421 in conjunction with the heat exchanger 410, the conveying efficiency of the heat exchange medium in the temperature control device 400 can be significantly improved, thereby enhancing the overall heat exchange effect and the system response speed.

[0102] In this embodiment, both ends of the heat exchanger 410 can be connected to the circulating pump 421 to form a complete circulation loop, or the circulating pump 421 can be located in the aforementioned heat exchange pipeline to drive the heat exchange medium to be transported in the circulation loop. Specifically, when the circulating pump 421 is directly connected to the heat exchanger 410, it can effectively control the flow rate and volume of the heat exchange medium, ensuring rapid heat transfer and dissipation during the heat exchange process. Under this configuration, the liquid circuit control device can intelligently adjust the pump's operating status based on the real-time temperature signal to achieve dynamic control.

[0103] In summary, by introducing the circulating pump 421, the heat exchange assembly 420 not only improves the transport efficiency of the heat exchange medium, but also enhances the flexibility and adaptability of the system, ensuring that the water treatment equipment 10 can maintain efficient water temperature regulation performance under various operating conditions.

[0104] In one embodiment, the heat exchange assembly 420 further includes a heat exchange container 422, which is connected to the circulating pump 421 and the heat exchange element 410 to form a complete heat exchange circuit. The main purpose of setting up the heat exchange container 422 is to increase the storage capacity of the heat exchange medium, thereby improving the heat exchange capacity and stability of the system.

[0105] Specifically, the heat exchange container 422, acting as a buffer and storage unit for the heat exchange medium, effectively alleviates the problem of uneven flow of the heat exchange medium within the system. When the temperature control device 400 is operating, the heat exchange container 422 can store a certain amount of heat exchange medium, ensuring that the system can still provide a stable heat exchange effect even when the heat exchange load is large or there are instantaneous changes in demand. In this way, the system's heat exchange efficiency is significantly improved, and the cooling speed becomes faster and more stable.

[0106] Furthermore, the heat exchange container 422 enables the recirculation of the heat exchange medium. When the heat exchange medium is not circulating in the heat exchange circuit, it can be temporarily stored in the heat exchange container 422, preventing heat loss or accumulation in a certain part of the system. This design not only helps maintain stable water temperature but also reduces the frequency of heat exchange medium replenishment and discharge, improving the system's operating efficiency and economy.

[0107] In summary, the addition of heat exchange container 422 not only enhances the storage and recirculation capacity of the heat exchange medium, but also improves the heat exchange efficiency of temperature control device 400 and the overall stability of the system, effectively meeting the thermal management needs of water treatment equipment 10 under high load and variable operating conditions.

[0108] In one embodiment, the heat exchange assembly 420 further includes a hot water tank, which is thermally coupled to the heat exchange component 410 and used to heat the water in the hot water tank. By providing a hot water tank, the water treatment device 10 can not only regulate the cooling of cold water but also heat and output hot water, expanding the functionality of the device and meeting the diverse needs of users for hot and cold water.

[0109] Specifically, the hot water in the hot water tank can be directly supplied by the hot water output from the heat exchange container 422, or it can be heated by other heating media through the heat exchange element 410. This design allows the hot water tank to flexibly accept hot water from different sources, ensuring the temperature stability of the hot water while improving heat exchange efficiency and the energy utilization rate of the system.

[0110] When the hot water in the hot water tank is filtered water, the water treatment equipment 10 can provide safe and hygienic hot drinking water, meeting users' requirements for drinking water temperature and improving drinking comfort and user experience. At this time, the hot water is treated by the filter element assembly 200 to ensure that the water quality meets drinking standards, and is heated to the set temperature for convenient daily use.

[0111] On the other hand, when the hot water in the tank is tap water or recycled hot water, it can be used in scenarios where there is a high demand for hot water in daily life, such as washing and cooking, but not for drinking. In this case, the device can intelligently switch the hot water source according to user needs or system settings, taking into account both hygiene and safety and ease of use.

[0112] By integrating a hot water tank, the water treatment equipment 10 possesses the functions of a combined hot and cold water unit, significantly improving the overall performance and application range of the equipment. The integrated hot and cold water design not only saves space and installation costs but also simplifies user operation and enhances the equipment's market competitiveness. Furthermore, the thermal coupling method between the hot water tank and the heat exchanger 410 can be diversified, including but not limited to clamping, welding, and embedded structures, ensuring good heat transfer efficiency and reducing heat loss. The material selection for the hot water tank should consider heat resistance, corrosion resistance, and hygiene requirements; commonly used materials include food-grade stainless steel and polypropylene (PP), ensuring both safety and extending the equipment's lifespan.

[0113] In this embodiment, the filter element assembly 200 is provided with a water inlet end 211, a wastewater end 212 and a clean water end 213. The water inlet end 211 is used to introduce water source, and the water source is filtered by the filter element assembly 200. The filter element assembly 200 outputs the treated clean water from the clean water end 213, and the wastewater is discharged from the wastewater end 212.

[0114] Specifically, the wastewater end 212 is connected to the heat exchanger 410, used to exchange heat using the wastewater discharged from the filter element assembly 200 as the heat exchange medium. By introducing wastewater into the heat exchanger 410, the waste heat or cold energy of the wastewater can be effectively recovered and utilized, thereby improving the overall energy efficiency and heat exchange efficiency of the temperature control device 400. This design not only makes full use of the residual heat energy of the wastewater and reduces energy waste, but also reduces the operating cost of the system, which is of positive significance for energy conservation and environmental protection.

[0115] The purified water end 213 is connected to the water storage tank 300 and is used to supply filtered purified water to the water storage tank 300, so that the filtered water can enter the temperature control device 400 for cooling. This structure ensures that the water entering the water storage tank 300 is safe and meets drinking standards, while also achieving effective control of the water temperature in the water storage tank, thus improving the user's drinking experience.

[0116] It should be noted that the specific type of filter element installed in the filter element assembly 200 can be selected according to actual application requirements. In this embodiment, the filter element assembly 200 preferably installs a reverse osmosis (RO) filter element. RO filter elements can effectively remove dissolved solids, harmful substances, and microorganisms from water, ensuring high purity and safety of the purified water. Furthermore, in other embodiments, the filter element assembly 200 can also install other types of filter elements, such as activated carbon filter elements, ultrafiltration membrane filter elements, nanofiltration membrane filter elements, or composite filter elements. The selection of different filter elements can be adjusted according to water quality conditions, filtration requirements, and cost budgets to meet the diverse needs of different users.

[0117] Specifically, the filter element assembly 200 can contain one, two, or more filter elements. Multiple filter elements can be connected in series or parallel to achieve more efficient filtration or extend their lifespan. Using a combination of multiple filter elements not only improves purification efficiency but also allows for tiered filtration of different pollutants, ensuring the stability and reliability of the filtered water quality. Furthermore, the connection between the wastewater end 212 and the heat exchanger 410 can be achieved through various methods such as pipe sealing, quick-connect fittings, or threaded connections, ensuring the airtightness and safety of wastewater flow to the heat exchanger 410 and preventing leakage and contamination.

[0118] In one embodiment, the filter element assembly 200 includes a filter element mounting base 210, which is connected to the water channel structure 100 and is used to mount an external water purification filter element 20.

[0119] This design allows the water filter cartridge 20 to be easily positioned and disassembled, greatly improving the efficiency of filter cartridge replacement and reducing the operational complexity for users during maintenance.

[0120] The structural design of the filter element mounting base 210 should take into account the fixing and sealing performance of the filter element. Specifically, the filter element mounting base 210 can adopt a snap-on, threaded, or quick-connect connection method to ensure the stability and safety of the filter element during use. Among them, the snap-on design facilitates quick installation and removal, while the threaded connection provides better sealing, which is especially important in high water pressure environments. The quick-connect connection provides a more convenient operating experience for users who need to frequently replace filter elements.

[0121] Specifically, the inlet 211, wastewater 212, and purified water 213 are located on the filter element mounting base 210, ensuring efficient filtration within the filter element assembly 200. The wastewater 212 discharges the wastewater treated by the filter element, while the purified water 213 delivers the filtered purified water to the storage tank 300. This structural design effectively reduces the length of pipelines and connection points, lowers the potential risk of leakage in the system, and improves overall safety and reliability.

[0122] In practical applications, the filter cartridge assembly 200 is designed to flexibly adapt to different types of filter cartridges to meet diverse water treatment needs. For example, the filter cartridge mounting base 210 is compatible with various filter cartridge types such as reverse osmosis (RO) filter cartridges, activated carbon filter cartridges, and ultrafiltration membrane filter cartridges, allowing users to freely choose the appropriate filter cartridge type based on specific water source conditions and purification requirements.

[0123] Furthermore, the filter element assembly 200 also includes a filter element booster pump 220, which is connected in the water pipe between the water circuit structure 100 and the filter element mounting base 210.

[0124] By setting up the filter booster pump 220, the water delivery efficiency and purification effect can be significantly improved, especially when the water purification filter 20 uses a reverse osmosis (RO) filter.

[0125] The filter booster pump 220 works by increasing the flow pressure of the water source, ensuring that the water can pass through the water filter cartridge 20 at a higher flow rate, thereby improving the filtration effect. RO filter cartridges have high requirements for inlet water pressure, and the filter booster pump 220 can increase the pressure of the water source to this range, ensuring that the RO filter cartridge can effectively remove dissolved solids and harmful substances from the water, improving the safety and purity of the purified water.

[0126] The inclusion of the filter booster pump 220 not only improves water delivery efficiency but also extends the filter's lifespan to some extent. By maintaining a suitable filtration pressure, the working environment of the water filter 20 becomes more stable, reducing damage caused by pressure fluctuations. Furthermore, the filter booster pump 220 effectively reduces water retention time during delivery, lowering the risk of bacterial growth and ensuring the safety and hygiene of the purified water.

[0127] Furthermore, the water tank 300 includes a refrigeration unit 310 and a cold storage unit 320. The refrigeration unit 310 is connected to the cold storage unit 320, and the refrigeration unit 310 is thermally coupled to the cold end of the heat exchanger 410.

[0128] In this embodiment, the cooling unit 310 is used to realize the cooling function of water. It can absorb heat from the water through the cooling cycle device, thereby reducing the water temperature. The cold storage unit 320 is used to store the cold water after being cooled by the cooling unit 310, and plays the role of cold water buffer and reserve, so that the water storage tank 300 can continuously and stably provide cold water to the user.

[0129] Specifically, the cold-end thermal coupling between the refrigeration unit 310 and the heat exchanger 410 means that the two maintain close thermal conduction contact during heat exchange, allowing the cooling energy brought by the heat exchange medium in the heat exchanger 410 to be quickly transferred to the water source in the refrigeration unit 310. Through this thermal coupling design, the refrigeration unit 310 can efficiently absorb the low-temperature energy brought by the heat exchanger 410, improve the overall cooling efficiency, and shorten the response time for water temperature reduction.

[0130] The cold storage section 320, as a cold water storage container, directly affects the cold storage capacity of the water tank 300 through its capacity and structural design. The cold storage section 320 can be insulated with heat-insulating materials to reduce cold loss and ensure that the cold water remains at a low temperature for a certain period. Specifically, the capacity of the cold storage section 320 can be set according to the usage requirements of the water treatment equipment 10, and selected based on the actual usage environment and user needs to meet different cold water supply requirements. Insufficient capacity will lead to unstable cold water supply, frequent refrigeration starts, increased energy consumption, and equipment wear; excessive capacity will increase equipment size and cost, and may also cause cold water to remain for too long, affecting water freshness.

[0131] A partition or heat-conducting structure can be installed between the cold storage section 320 and the refrigeration section 310 to allow for necessary heat exchange while effectively separating the two sections. This prevents the cold water from being directly disturbed by the refrigeration cycle of the refrigeration section 310, ensuring a uniform and stable temperature of the cold water in the storage tank. Furthermore, the design of the cold storage section 320 should also consider ease of cleaning and maintenance to ensure the safety and hygiene of the cold water quality.

[0132] In one embodiment, the water tank 300 further includes a first cold water pump 330, which is connected to both the refrigeration unit 310 and the cold storage unit 320. By providing the first cold water pump 330, the efficiency of cold water delivery can be significantly improved, ensuring smoother and more stable circulation of cold water between the refrigeration unit 310 and the cold storage unit 320.

[0133] Specifically, the first chilled water pump 330 overcomes the problem of insufficient water flow velocity caused by factors such as resistance, water pressure difference, and pipe length in the pipeline, enabling chilled water to be quickly delivered from the refrigeration unit 310 to the cold storage unit 320, or from the cold storage unit 320 to the user's water supply port. This not only ensures the full utilization of the low-temperature water resources in the storage tank 300, but also effectively avoids the phenomena of chilled water stagnation and temperature rise, improving the response speed of chilled water supply and user experience.

[0134] Furthermore, the first chilled water pump 330 can operate continuously or be designed for intermittent operation, achieving intelligent control in conjunction with temperature and flow sensors. Through intelligent control, the chilled water pump can automatically adjust its start and stop times based on changes in water temperature in the storage tank and user water demand, further improving the system's energy efficiency and ease of use.

[0135] By installing the first chilled water pump 330, the water circulation efficiency between the refrigeration unit 310 and the cold storage unit 320 is improved, and the temperature distribution of the chilled water in the storage tank 300 is more uniform, reducing energy waste caused by temperature differences and thus improving the overall energy efficiency and stability of the refrigeration system. At the same time, the rapidly circulating chilled water can better meet the user's needs for chilled water volume and temperature, improving the operating effect and reliability of the water treatment equipment 10.

[0136] Furthermore, the water tank 300 also includes a second cold water pump 340, which is connected to the cold storage section 320 and used to pump cold water outwards. By setting up the second cold water pump 340, the output efficiency of cold water can be significantly improved, ensuring that the user can quickly and stably obtain the required temperature and flow rate of cold water.

[0137] Specifically, the second cold water pump 340 solves the problems of insufficient flow and unstable pressure that may occur when relying solely on gravity or simple pipeline pressure for water supply. Especially in cases of high water consumption or long pipelines with significant pressure loss, it effectively ensures the continuity and sufficiency of cold water supply. The second cold water pump 340 increases the delivery pressure and flow rate of cold water from the cold storage unit 320 to the user, reducing the risk of supply delays and water temperature rise, thus improving the user's drinking water experience.

[0138] Furthermore, the second cold water pump 340 can also be designed for intelligent control. By incorporating flow sensors, pressure sensors, and temperature sensors, it can automatically start and stop based on the user's actual water demand, effectively reducing energy consumption and extending the pump's lifespan. Intelligent control also avoids prolonged idling or frequent starts, reducing mechanical wear and failure rates.

[0139] The selection of materials for the second cold water pump 340 is equally important. The pump body and internal fluid contact components should preferably be made of corrosion-resistant materials that meet drinking water hygiene standards, such as food-grade stainless steel and food-grade engineering plastics, to ensure water quality safety and equipment durability. The sealing structure should employ a reliable mechanical or magnetic seal design to prevent leakage and contamination, ensuring the safe and stable operation of the system.

[0140] By incorporating a second chilled water pump 340, the water storage tank 300 can more effectively deliver chilled water to the user end, not only improving the chilled water output efficiency but also optimizing the overall water supply performance and user experience of the water treatment equipment 10. This design ensures sufficient chilled water supply pressure and stable water output, while reducing chilled water stagnation in the refrigeration section 310 and the cold storage section 320 due to insufficient water pressure, further improving the system's cooling efficiency and energy-saving effect.

[0141] For details, please refer to [link / reference]. Figure 2In the illustrated embodiment, the liquid circuit control device is equipped with multiple valves, including an inlet valve 511, a wastewater valve 512, a purified water valve 513, and a cold water valve 514. These valves are arranged on corresponding water pipes, corresponding to the inlet pipe of inlet 110, the wastewater pipe of wastewater outlet 120, the purified water pipe of purified water end 213 of filter element assembly 200, and the cold water pipe of cold water outlet 140, respectively. The valve arrangement enables the opening and closing control of different water flows in the water circuit system, ensuring that the fluid path of the system can be effectively managed and meeting the water demand of the water treatment equipment 10 at different operating stages.

[0142] Specifically, the inlet valve 511 controls the entry of external water. When the water treatment equipment 10 is started, the control module can open the inlet valve 511 to allow water to enter the filter element assembly 200 for purification. The wastewater valve 512 controls the discharge of wastewater. In conjunction with the filtration process of the water purification filter element 20, it effectively removes the wastewater generated by the filter element, preventing backflow or leakage. The purified water valve 513 is located on the purified water outlet 130 pipe and controls the output of purified water from the filter element assembly 200 to the user end, ensuring the stability and accuracy of the purified water flow. The cold water valve 514 is located on the cold water outlet 140 pipe and controls the flow of cold water from the water storage tank 300 to the user end, meeting the user's immediate need for cold water.

[0143] The valve body is preferably made of solenoid valve because of its fast response speed, precise control, and ease of integration into automation systems. Solenoid valves achieve rapid opening and closing of the valve through the switching of an electromagnetic coil, possessing good sealing performance and a long service life, making them suitable for precise water flow control in water treatment equipment 10. The structure of solenoid valves can include both direct-acting and pilot-operated types; the specific selection can be flexibly determined based on system pressure, flow requirements, and cost considerations to meet control requirements under different operating conditions.

[0144] In the water treatment equipment 10 of this embodiment, a liquid circuit control device enables multi-channel mixing and switching between the heat exchanger 410 and multiple input water circuits and corresponding output water circuits. This allows for flexible mixing and output of water sources based on different types of input water sources, achieving efficient heat conversion and rational pipeline allocation. Specifically, the heat exchanger 410 is controlled by a switching valve to establish connections with at least two water circuits among the wastewater end 212, the clean water end 213, or the inlet 110. Simultaneously, the corresponding output water circuit is switched to connect with the wastewater outlet 120, the heat exchange component 420, or the water storage tank 300.

[0145] The advantages of multi-channel mixing technology are mainly reflected in the following aspects: First, it can improve the feedback efficiency of the water treatment equipment 10, enhance ease of use, and reduce valve operation during control, thereby improving the durability of the water treatment equipment 10. Second, it provides precise liquid circuit control, enabling automatic or manual selection of appropriate mixing water sources for heat exchange based on actual needs, thus improving the flexibility and response speed of water temperature regulation. Third, mixing and switching reduce system complexity, simplify the water circuit structure, facilitate maintenance and fault diagnosis, and improve equipment reliability and service life. Finally, this design facilitates energy-saving operation by rationally allocating water flow and heat exchange methods, thereby improving overall energy efficiency.

[0146] The present invention also provides a water circuit control method for a water treatment device, which can be applied to the water treatment device 10 in any of the above embodiments. The water circuit control method specifically includes the following steps:

[0147] Step S1: The liquid circuit control device switches the heat exchanger 410 to connect with multiple water sources, including the water source output from the wastewater end 212, the water source output from the clean water end 213, and the water source input from the inlet 110.

[0148] Step S2: When the liquid circuit control device controls the first water source input heat exchanger 410 including the wastewater end 212, at least one of the following control modes is executed:

[0149] Mode A1: Drives the first water source to circulate within the temperature control device 400;

[0150] Mode A2: Drive the first water source to discharge through wastewater outlet 120;

[0151] Step S3: When the liquid circuit control device controls the second water source input to the heat exchanger 410 with only the output of the clean water end 213, at least one of the following control modes is executed:

[0152] Mode B1: Drives the second water source to circulate within the temperature control device 400;

[0153] Mode B2: Drive the second water source to discharge through wastewater outlet 120;

[0154] Mode B3: Drives the second water source to the water storage tank 300;

[0155] Step S4: When the liquid circuit control device controls the third water source input heat exchanger 410, including the output from the inlet 110, at least one of the following control modes is executed:

[0156] Mode C1: Drives the third water source to circulate within the temperature control device 400;

[0157] Mode C2: Drives the third water source to discharge through wastewater outlet 120;

[0158] Mode C3: Drives a third water source to deliver water to filter element 200.

[0159] The water circuit control method provided by this invention achieves efficient water flow and heat management within the water treatment equipment 10 by flexibly switching between multiple water circuits and corresponding control modes between the heat exchanger 410 and the wastewater end 212, the clean water end 213, and the inlet 110. This not only improves the cooling speed and energy-saving performance but also ensures water quality safety and system hygiene management, thereby realizing the functions of heat exchange circulation, heat exchange waste discharge, filter element rinsing, and water tank disinfection, significantly enhancing the overall performance of the water treatment equipment.

[0160] Specifically, when the water source is driven to circulate within the temperature control device 400, the hot water source can flow sequentially through the heat exchanger 410, the circulation pump 421, and the heat exchange container 422, and then flow back to the heat exchanger 410 to achieve the circulation operation of the hot water source.

[0161] Furthermore, the liquid circuit control device also includes a circulation valve 521, a cooling valve 522, a disinfection valve 523, and a filter valve 524. In this embodiment, the various water circuits of the water treatment equipment 10 are configured as follows:

[0162] The heat exchanger 410, the circulating pump 421 and the heat exchange container 422 are connected in sequence to a circulating water circuit, and the circulating valve 521 is located on the circulating water circuit.

[0163] The clean water end 213 is connected to the input end of the water storage tank 300 to form a cold water input path; the cooling valve 522 is located on the cold water input path;

[0164] The output end of the heat exchanger 410 is connected to the input end of the water storage tank 300 to form a disinfection water circuit; the disinfection valve 523 is located on the disinfection water circuit;

[0165] The output end of the heat exchanger 410 is connected to the inlet end 211 to form a filter element return water path; the filter element valve 524 and the filter element booster pump 220 are located on the filter element return water path.

[0166] The operating principle of water treatment equipment 10 is as follows:

[0167] When the hot water source is driven to exchange heat through the heat exchanger 410, the cooling valve 522 is closed first to prevent the hot water source from entering the water storage tank 300, thereby preventing the low temperature water in the water storage tank 300 from being affected by unnecessary heat, and maintaining the water temperature and cold water quality in the water storage tank 300.

[0168] When the mixed water source that needs to be driven, including the first water source (i.e. wastewater) output from the wastewater end 212, enters the heat exchanger 410 for heat exchange;

[0169] Open: the first water circuit valve 530, the second water circuit valve 540 and / or the inlet valve 511;

[0170] The mixed water source containing the first water source can enter the heat exchanger 410 through the first input water channel for heat exchange.

[0171] At this time, the liquid circuit control device can switch the output water circuit to mode A1:

[0172] Close: Wastewater valve 512, refrigeration valve 522, disinfection valve 523, filter valve 524;

[0173] Open: Circulation valve 521;

[0174] This allows the hot water source to circulate within the temperature control device 400 to achieve the heat exchange function.

[0175] At this time, the liquid circuit control device can switch the output water circuit to mode A2:

[0176] Close: Circulation valve 521, Refrigeration valve 522, Disinfection valve 523, Filter valve 524;

[0177] Open: Wastewater valve 512;

[0178] This allows the heat exchanger to discharge wastewater through the wastewater end 212.

[0179] When only the second water source (i.e., purified water) output from the purified water end 213 needs to be driven to enter the heat exchanger 410 for heat exchange;

[0180] Close: Water purification valve 513, first water circuit valve 530, inlet valve 511, cooling valve 522;

[0181] Open: Second water circuit valve 540;

[0182] Only the second water source enters the heat exchanger 410 through the second input water path for heat exchange.

[0183] At this time, the liquid circuit control device can switch the output water circuit to mode B1:

[0184] Close: Wastewater valve 512, refrigeration valve 522, disinfection valve 523, filter valve 524;

[0185] Open: Circulation valve 521;

[0186] This allows the hot water source to circulate within the temperature control device 400 to achieve the heat exchange function.

[0187] At this time, the liquid circuit control device can switch the output water circuit to mode B2:

[0188] Close: Circulation valve 521, Refrigeration valve 522, Disinfection valve 523, Filter valve 524;

[0189] Open: Wastewater valve 512;

[0190] This allows the heat exchanger to discharge wastewater through the wastewater end 212.

[0191] At this time, the liquid circuit control device can switch the output water circuit to mode B3:

[0192] Close: Wastewater valve 512, circulation valve 521, filter valve 524;

[0193] Open: Sterilization valve 523;

[0194] In one embodiment, when the disinfection valve 523 is opened, high-temperature purified water enters the water storage tank 300 and can maintain a high temperature of 60°C to circulate inside the water storage tank 300 for 10 minutes to achieve the sterilization function. Of course, the water temperature can be determined according to actual needs, such as 55°C, 70°C, etc., and the circulation time can also be determined according to actual needs, such as 5 minutes, 15 minutes, 20 minutes, etc., without being limited to a single time.

[0195] This allows the hot water source to be transported to the storage tank 300 for high-temperature disinfection.

[0196] When it is necessary to drive the third water source (i.e., tap water) with the input of the inlet 110 to enter the heat exchanger 410 for heat exchange;

[0197] Open: Inlet valve 511;

[0198] The mixed water source containing the third water source can enter the heat exchanger 410 through the third input water channel for heat exchange.

[0199] At this time, the liquid circuit control device can switch the output water circuit to mode C1:

[0200] Close: Wastewater valve 512, refrigeration valve 522, disinfection valve 523, filter valve 524;

[0201] Open: Circulation valve 521;

[0202] This allows the hot water source to circulate within the temperature control device 400 to achieve the heat exchange function.

[0203] At this time, the liquid circuit control device can switch the output water circuit to mode C2:

[0204] Close: Circulation valve 521, Refrigeration valve 522, Disinfection valve 523, Filter valve 524;

[0205] Open: Wastewater valve 512;

[0206] This allows the heat exchanger to discharge wastewater through the wastewater end 212.

[0207] At this time, the liquid circuit control device can switch the output water circuit to mode C3:

[0208] Close: Circulation valve 521, disinfection valve 523, purified water valve 513, second water circuit valve 540;

[0209] Open: Filter valve 524, Refrigeration valve 522;

[0210] This drives the hot water source to be delivered to the filter element 200 for filtration, and the filtered hot water is then delivered to the storage tank 300.

[0211] Specifically, for example, when the temperature of the heat exchange source exceeds a preset threshold, the liquid circuit control device switches to modes A2, B2, and C2. Water flows through the heat exchanger 410 and is discharged from the wastewater outlet 120, forming a unidirectional flow heat exchange path. This unidirectional transport mode helps to quickly remove excessive heat from the heat exchange source. By utilizing the lower temperature and larger flow rate of the external water source, the temperature of the heat exchange source is rapidly reduced, preventing the overall system temperature from becoming too high and improving equipment safety and stability. This mode improves heat exchange efficiency and the heat exchange effect of the heat exchanger 410, ensuring continuous supply of the heat exchange source and timely discharge of wastewater, avoiding water stagnation and reduced heat exchange efficiency.

[0212] When the temperature of the heat exchange source does not exceed the threshold, modes A1, B1, and C1 can be used. This allows the heat exchange source to form a closed-loop circulation between the heat exchange element 410 and the heat exchange container 422. In this case, the heat exchange source flows continuously through the heat exchange loop, effectively maintaining a uniform and stable temperature, reducing the impact of temperature fluctuations on the system, and improving overall heat exchange efficiency and energy saving.

[0213] When the temperature of the hot water source does not exceed the threshold, mode B3 can also be used. This allows the purified water to be transferred to the storage tank 300 after heat exchange, and the storage tank 300 is disinfected by high temperature, making full use of the heat energy.

[0214] When the temperature of the hot water source does not exceed the threshold, mode C3 can also be used. This allows the purified water to be delivered to the filter element assembly 200 after heat exchange, and the filter element assembly 200 is rinsed at high temperature, improving the rinsing effect. The advantage of this rinsing process is that it uses the water source output from the heat exchanger 410 as the rinsing medium. The water temperature, after heat exchange regulation, is usually within a suitable temperature range, which helps to improve the rinsing effect, promotes the removal of deposits and impurities inside the filter element, and extends the service life of the filter element. Simultaneously, the rinsing process uses a liquid circuit control device to precisely control the water flow path and flow rate, achieving efficient and uniform rinsing, avoiding localized scale buildup and clogging, and ensuring the filtration performance of the filter element and water quality safety. Using warm or hot water to rinse the filter element assembly 200 can significantly improve the cleaning effect and service life of the filter element. Specifically, warm or hot water has a stronger dissolving capacity and higher heat transfer efficiency than room temperature water, making it easier to dissolve and remove organic pollutants, oils, and some microorganisms on the filter element, thus achieving a more thorough rinsing effect.

[0215] In practical applications, the temperature of the warm water can be set within a general warm water range, such as 30℃, 40℃, 50℃, or even higher at 60℃. The specific temperature is determined based on the heat resistance of the filter material and the design requirements of the water purification system. If the temperature is too low, the rinsing effect will be limited, making it difficult to effectively remove attached dirt; if the temperature is too high, it may damage or prematurely age some filter materials. Therefore, it is necessary to reasonably control the temperature range to balance the rinsing effect and the durability of the filter.

[0216] In addition, rinsing with hot water can also have a certain bactericidal and disinfecting effect. When the water temperature reaches a certain threshold (e.g., 55℃ to 70℃), it can effectively inhibit and kill bacteria and microorganisms on the surface of the filter element, reducing the risk of secondary pollution and thus ensuring the hygiene and safety of the water purification system and the stability of water quality. This disinfection function is especially suitable for occasions with high requirements for water quality hygiene, such as household drinking water, medical or food processing water, etc.

[0217] It should be noted that the number of valves, including circulation valve 521, refrigeration valve 522, disinfection valve 523, filter valve 524, first water circuit valve 530, and second water circuit valve 540, can be set to one, two, or more according to specific system design requirements. The specific number and arrangement can be flexibly adjusted according to the structure of heat exchanger 410, pipeline complexity, and flow requirements to achieve more precise flow path switching and more efficient heat exchange. Electromagnetic valves with fast response and good sealing performance are preferred, and they are used in conjunction with the control module to achieve automated control, further improving the system's intelligence level and operating efficiency.

[0218] In summary, through the rational combination and linkage control of the above-mentioned circulation valve 521, cooling valve 522, disinfection valve 523, filter valve 524, first water circuit valve 530, second water circuit valve 540, inlet valve 511, wastewater valve 512, purified water valve 513, and cold water valve 514, the heat exchange water source in the heat exchange component 410 can be flexibly switched between unidirectional flow cooling and closed-loop circulation transport modes. The replenishment of wastewater and tap water ensures the stability of the circulating water source volume and temperature, effectively improving heat exchange efficiency, system energy saving and operational safety, and significantly enhancing the overall performance of the water treatment equipment and user experience.

[0219] In a preferred embodiment, step S4 further includes the following steps:

[0220] When it is necessary to drive the mixed water source, including a third water source (which may be tap water) input through inlet 110, but not including the first water source, to enter the heat exchanger 410 for heat exchange;

[0221] Close: First water circuit valve 530;

[0222] Open: Inlet valve 511;

[0223] At this time, only purified water and tap water are mixed, or tap water from a third source enters the heat exchanger 410 through the third input water passage for heat exchange.

[0224] This can prevent wastewater from contaminating the heat exchange source and prevent wastewater from flowing into the heat exchange components, thus preventing wastewater from contaminating the heat exchange source.

[0225] Of course, in some embodiments, in order to ensure that the air or gas generated in the cold storage section 320 and the heat exchange container 422 due to water consumption, temperature changes or gas accumulation can be effectively discharged, the water treatment equipment 10 may also be equipped with an exhaust device.

[0226] The exhaust pipe can be connected to the exhaust port of the cold storage section 320 and the heat exchange container 422, and the gas can be discharged to the external environment through the set exhaust valve or automatic exhaust device to ensure that the gas in the water does not accumulate and avoid affecting the normal operation of the system.

[0227] Specific implementation methods may include installing exhaust pipes in the cold storage section 320 and the heat exchange container 422. These exhaust pipes are equipped with exhaust valves or vents along their route. The valves can be electrically, pneumatically, or manually controlled automatic exhaust valves to automatically open and release air based on gas accumulation. The exhaust pipes can be strategically arranged to ensure that the exhaust ports are far from heat sources and areas susceptible to contamination, preventing gas backflow or the introduction of contaminants. With continuous water use and temperature changes, air or dissolved gases will gradually accumulate in the cold storage section 320 and the heat exchange container 422, affecting the stability of the water flow and heat transfer efficiency. By installing exhaust pipes to vent these gases outside the system, the concentration of gases in the water can be effectively reduced, bubble formation can be minimized, water flow blockage and noise can be avoided, and the system's operational stability and heat exchange efficiency can be improved.

[0228] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., 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 the embodiments of 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, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0229] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0230] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0231] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0232] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A water treatment device, characterized in that, include: The water system is equipped with an inlet, a wastewater outlet, and an outlet. The filter element assembly has an inlet end, a clean water end and a wastewater end, wherein the wastewater end is connected to the wastewater outlet and the clean water end is connected to the outlet. A temperature control device includes a heat exchanger and a heat exchange assembly, wherein the heat dissipation end of the heat exchanger is thermally coupled to the heat exchange assembly; The heat exchange circuit includes an input water circuit and an output water circuit. The input end of the heat exchanger is connected to at least one of the wastewater end, the clean water end, and the water inlet through multiple input water circuits. The output end of the heat exchanger is connected to at least one of the wastewater inlet, the heat exchange component, and the water inlet through multiple output water circuits. as well as A liquid circuit control device is connected to the heat exchange circuit, and the liquid circuit control device is used to switch the heat exchange element connected to multiple input water circuits and the output water circuit; The input water path includes a first input water path, the input end of which is connected to the wastewater end, and the output end of which is connected to the input end of the heat exchanger and the wastewater outlet respectively. The liquid path control device includes a first water path valve disposed on the first input water path, which is used to control the on / off connection between the heat exchanger and the wastewater end. The input water path includes a second input water path, the input end of which is connected to the purified water end, and the output end of which is connected to the input end of the heat exchanger and the outlet respectively. The liquid path control device includes a second water path valve disposed on the second input water path, which is used to control the on / off connection between the heat exchanger and the purified water end. The input water path includes a third input water path, which is connected to the inlet and the heat exchanger respectively; the water treatment equipment also includes a water storage tank, which is connected to the clean water end and the outlet respectively, and the cold end of the heat exchanger is thermally coupled to the water storage tank; the water storage tank includes a refrigeration section and a cold storage section, the refrigeration section is connected to the cold storage section, and the refrigeration section is thermally coupled to the cold end of the heat exchanger.

2. The water treatment equipment according to claim 1, characterized in that, The heat exchange assembly includes a circulation pump, which is connected to the heat exchanger to form a loop.

3. The water treatment equipment according to claim 2, characterized in that, The heat exchange assembly also includes a heat exchange container, which is connected to the circulating pump and the heat exchange element to form a loop.

4. The water treatment equipment according to claim 3, characterized in that, The heat exchange assembly also includes a hot water tank, and the heat exchange element is thermally coupled to the hot water tank and used to heat the hot water tank.

5. The water treatment equipment according to claim 1, characterized in that, The water tank also includes a first cold water pump, which is connected to the refrigeration unit and the cold storage unit respectively; And / or, the water tank further includes a second cold water pump, which is connected to the cold storage section and is used to pump cold water outward.

6. A water circuit control method for a water treatment device, characterized in that, The method applied to the water treatment equipment as described in any one of claims 1-5 includes the following steps: Step S1: The liquid circuit control device switches the heat exchanger to connect with multiple water sources, including the water source output from the wastewater end, the water source output from the purified water end, and the water source input from the inlet. Step S2: When the liquid circuit control device controls the input of the first water source, including the wastewater output, into the heat exchanger, at least one of the following control modes is executed: Mode A1: Drives the first water source to circulate within the temperature control device; Mode A2: Drive the first water source to discharge through the wastewater outlet; Step S3: When the liquid circuit control device controls the second water source, which only outputs from the purified water end, to be input into the heat exchanger, at least one of the following control modes is executed: Mode B1: Drives the second water source to circulate within the temperature control device; Mode B2: Drive the second water source to discharge through the wastewater outlet; Step S4: When the liquid circuit control device controls the input of a third water source, including the water output from the inlet, into the heat exchanger, at least one of the following control modes is executed: Mode C1: Drive the third water source to circulate within the temperature control device; Mode C2: Drive the third water source to discharge through the wastewater outlet; Mode C3: Drives the third water source to deliver water to the filter assembly.

7. The water circuit control method for the water treatment equipment according to claim 6, characterized in that, In the step of executing at least one of the following control modes when the liquid circuit control device controls the input of a third water source, including the water output from the inlet, into the heat exchanger, the following step is further included: When the liquid circuit control device controls a third water source that includes the water output from the inlet but does not include the first water source, it executes at least one of the following control modes: Mode C1: Drive the third water source to circulate within the temperature control device; Mode C2: Drive the third water source to discharge through the wastewater outlet; Mode C3: Drives the third water source to deliver water to the filter assembly.

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