Water treatment equipment and waterway control method of water treatment equipment

Abstract

The invention relates to the technical field of water treatment equipment, in particular to water treatment equipment and a water path control method of the water treatment equipment. The water treatment equipment comprises a water path structure, a filter element assembly, a temperature adjusting device, a heat exchange water path and a liquid path control device, the heat exchange water way comprises input water ways and output water ways, the input end of the heat exchange part is connected with at least one of the waste water end, the purified water end and the water inlet through the multiple input water ways, and the output end of the heat exchange part is connected with at least one of the waste water port, the heat exchange assembly, the water storage tank and the water inlet end through the multiple output water ways; the liquid path control device is used for switching the heat exchange piece to be communicated with the input water paths and the output water paths. According to the water treatment equipment, the temperature adjusting device for water path heat exchange is adopted, the multiple input water paths of the heat exchange piece are connected with the waste water end, the purified water end and the water inlet respectively, different input water paths and corresponding output water paths are flexibly switched by combining the liquid path control device, and efficient heat conversion among multiple water sources is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment equipment, and particularly to a water treatment equipment and a water circuit control method for the water treatment equipment. Background Art

[0002] Most of the existing water purification equipment adopts the air-cooling method for water temperature regulation, mainly cooling or refrigerating the water tank through a fan and a heat sink. However, the air-cooling method is easily affected by the ambient temperature. Especially in a high-temperature environment, the air-cooling efficiency decreases, resulting in unstable refrigeration effect. In addition, the air-cooling structure is usually large in volume, and the heat dissipation effect depends on air circulation, which limits the design flexibility and overall performance improvement of the water purification equipment.

[0003] In view of the above problems, some water purification equipment in the prior art has introduced a water circuit heat exchange design, but most of them adopt a single heat exchange path and lack the flexible switching ability for different heat exchange requirements, resulting in limited heat exchange efficiency and unable to balance the optimization of rapid refrigeration and heating effects. At the same time, the single heat exchange structure has deficiencies in flow control, affecting the water flow rate and heat exchange efficiency of the water circuit, and unable to achieve efficient water temperature regulation and effective water circuit sterilization.

[0004] In addition, the connection method of the existing heat exchange device is relatively complex, and the liquid circuit control is not fine enough, making it difficult to achieve efficient switching of the heat exchange water circuit, which restricts the overall performance improvement of the temperature control device. The lack of optimization of flow rate and heat exchange results in both refrigeration and heating effects being difficult to reach the ideal level, affecting the ice-making speed and sterilization effect of the water purification equipment. There is an urgent need for a new water circuit structure and liquid circuit control technology that can flexibly regulate the heat exchange path and improve the heat exchange efficiency. Summary of the Invention

[0005] In view of this, the present application provides a water treatment equipment to solve the problem of poor refrigeration performance of the water purification equipment in the prior art.

[0006] The first aspect of the present application provides a water treatment equipment, including: A water circuit structure provided with a water inlet, a wastewater outlet and a water outlet; A filter element assembly provided with a water inlet end, a purified water end and a wastewater end, the wastewater end is connected to the wastewater outlet, and the purified water end is connected to the water outlet; A temperature control device including a heat exchange element and a heat exchange assembly, the heat dissipation end of the heat exchange element is thermally coupled with the heat exchange assembly; A heat exchange water circuit including an input water circuit and an output water circuit, the input end of the heat exchange element is connected to at least one of the wastewater end, the purified water end and the water inlet through a plurality of the input water circuits, and the output end of the heat exchange element is connected to at least one of the wastewater outlet, the heat exchange assembly and the water inlet end through a plurality of the output water circuits; and A liquid path control device is connected to the heat exchange water path, and the liquid path control device is used to switch the heat exchange element to communicate with multiple input water paths and the output water path.

[0007] In a possible implementation manner, the input water path includes a first input water path. The input end of the first input water path is connected to the waste water end, and the output end of the first input water path is respectively connected to the input end of the heat exchange element and the waste water outlet. The liquid path control device includes a first water path valve provided on the first input water path, and the first water path valve is used to control the on-off between the heat exchange element and the waste water end. 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, and the output end of the second input water path is respectively connected to the input end of the heat exchange element and the water outlet. The liquid path control device includes a second water path valve provided on the second input water path, and the second water path valve is used to control the on-off between the heat exchange element and the purified water end. And / or the input water path includes a third input water path, and the third input water path is respectively connected to the water inlet and the heat exchange element.

[0008] In a possible implementation manner, the heat exchange assembly includes a circulation pump, and the circulation pump communicates with the heat exchange element to form a loop.

[0009] In a possible implementation manner, the heat exchange assembly further includes a heat exchange container, and the heat exchange container is respectively connected to the circulation pump and the heat exchange element to form a loop.

[0010] In a possible implementation manner, the heat exchange assembly further includes a hot water tank, and the heat exchange element is thermally coupled to the hot water tank and is used to heat the hot water tank.

[0011] In a possible implementation manner, the water treatment device further includes a storage water tank, and the storage water tank is respectively connected to the purified water end and the water outlet, and the cold end of the heat exchange element is thermally coupled to the storage water tank.

[0012] In a possible implementation manner, the storage water tank includes a refrigeration part and a cold storage part, the refrigeration part communicates with the cold storage part, and the refrigeration part is thermally coupled to the cold end of the heat exchange element.

[0013] In a possible implementation manner, the storage water tank further includes a first cold water pump, and the first cold water pump communicates with the refrigeration part and the cold storage part respectively. And / or, the storage water tank further includes a second cold water pump, and the second cold water pump is connected to the cold storage part and is used to pump out cold water outward.

[0014] The second aspect of the present application provides a water circuit control method for a water treatment device, which is applied to the water treatment device described in any one of the above, and includes the following steps: Step S1, the liquid circuit control device switches the heat exchange element to be in water circuit communication with multiple water sources among the water source output from the wastewater end, the water source output from the purified water end, and the water source input from the water inlet; Step S2, when the liquid circuit control device controls the first water source including the output from the wastewater end to input into the heat exchange element, execute at least one of the following control modes: Mode A1: Drive the first water source to circulate in the temperature control device; Mode A2: Drive the first water source to be discharged through the wastewater outlet; Step S3, when the liquid circuit control device controls only the second water source output from the purified water end to input into the heat exchange element, execute at least one of the following control modes: Mode B1: Drive the second water source to circulate in the temperature control device; Mode B2: Drive the second water source to be discharged through the wastewater outlet; Step S4, when the liquid circuit control device controls the third water source including the output from the water inlet to input into the heat exchange element, execute at least one of the following control modes: Mode C1: Drive the third water source to circulate in the temperature control device; Mode C2: Drive the third water source to be discharged through the wastewater outlet; Mode C3: Drive the third water source to be conveyed to the filter element assembly.

[0015] In a possible implementation manner, in the step of "when the liquid circuit control device controls the third water source including the output from the water inlet to input into the heat exchange element and execute at least one of the following control modes", the following steps are further included: When the liquid circuit control device controls the third water source including the output from the water inlet and does not include the first water source, execute at least one of the following control modes: Mode C1: Drive the third water source to circulate in the temperature control device; Mode C2: Drive the third water source to be discharged through the wastewater outlet; Mode C3: Drive the third water source to be conveyed to the filter element assembly.

[0016] Implementing the embodiments of the present application has the following beneficial effects: The water treatment equipment in this embodiment adopts a temperature control device with waterway heat exchange. The multiple input waterways of the heat exchange component are respectively connected to the wastewater end, the purified water end, and the water inlet. Combined with the liquid path control device, different input waterways and corresponding output waterways can be flexibly switched, realizing efficient heat conversion between multiple water sources. Compared with the traditional air-cooled method, this embodiment can effectively avoid the influence of ambient temperature on the refrigeration effect and maintain the stable performance of the temperature control device.

[0017] In addition, this embodiment increases the water flow rate and heat exchange area through the heat exchange waterway, effectively improving the heat exchange efficiency and realizing the rapid refrigeration function. The thermal coupling design of the water storage tank and the cold end of the heat exchange component further enhances the stability of cold water storage and temperature control, promoting the improvement of the refrigeration effect.

[0018] In the water treatment equipment of this embodiment, the liquid path control device is used to realize the multi-way mixing and switching of the heat exchange component, multiple input waterways, and corresponding output waterways. It can flexibly switch the waterways according to the water source type of the input mixed water source, realizing efficient heat conversion and reasonable pipeline distribution. At the same time, the water path circulation heat exchange process has a sterilization effect, improving the sanitary performance of the water treatment equipment. This embodiment has a compact structure. The heat exchange component replaces the traditional air-cooled heat sink and fan, reducing the equipment volume, optimizing the overall design flexibility of the water treatment equipment, and being conducive to the miniaturization and performance improvement of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 Shows a three-dimensional view of the water treatment equipment in the embodiment of the present invention; Figure 2 Shows a waterway schematic diagram of the water treatment equipment in the embodiment of the present invention; Figure 3 Shows a flow schematic diagram of the waterway control method of the water treatment equipment in the embodiment of the present invention; Figure 4 Shows a mode schematic diagram of the waterway control method of the water treatment equipment in the embodiment of the present invention.

[0021] Reference Signs: 10, water treatment equipment; 100, waterway structure; 110, water inlet; 120, wastewater outlet; 130, purified water outlet; 140, cold water outlet; 200, Filter element assembly; 210, Filter element mounting seat; 211, Water inlet end; 212, Waste water end; 213, Purified water end; 220, Filter element booster pump; 300, Water storage tank; 310, Refrigeration unit; 320, Cold storage unit; 330, First cold water pump; 340, Second cold water pump; 400, Temperature adjustment device; 410, Heat exchange component; 420, Heat exchange assembly; 421, Circulation pump; 422, Heat exchange container; 511, Water inlet valve; 512, Waste water valve; 513, Purified water valve; 514, Cold water valve; 521, Circulation valve; 522, Refrigeration valve; 523, Disinfection valve; 524, Filter element valve; 530, First waterway valve; 540, Second waterway valve; 600, Housing structure; 20, Purified water filter element. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0023] Most existing water purification devices use the air-cooling method for water temperature adjustment, mainly cooling or refrigerating the water tank through a fan and a radiator. However, the air-cooling method is easily affected by the ambient temperature. Especially in a high-temperature environment, the air-cooling efficiency decreases, resulting in unstable refrigeration effects. In addition, the air-cooling structure is usually large in volume, and the heat dissipation effect depends on air circulation, which limits the design flexibility and overall performance improvement of the water purification device.

[0024] In view of the above problems, some water purification devices in the prior art have introduced the waterway heat exchange design, but mostly use a single heat exchange path and lack the flexible switching ability for different heat exchange requirements, resulting in limited heat exchange efficiency and unable to take into account the optimization of rapid refrigeration and heating effects. At the same time, the single heat exchange structure has deficiencies in flow control, affecting the water flow rate and heat exchange efficiency of the waterway and unable to achieve efficient water temperature adjustment and effective waterway sterilization.

[0025] In addition, the connection method of the existing heat exchange device is relatively complex, and the liquid path control is not fine enough, making it difficult to achieve efficient switching of the heat exchange waterway and restricting the overall performance improvement of the temperature adjustment device. The lack of optimization of flow rate and heat exchange results in both refrigeration and heating effects being difficult to reach the ideal level, affecting the ice-making speed and sterilization effect of the water purification device. There is an urgent need for a new waterway structure and liquid path control technology that can flexibly regulate the heat exchange path and improve the heat exchange efficiency.

[0026] Based on this, refer to Figures 1 to 4 As shown, an embodiment of the present invention provides a water treatment device 10, which includes a water path structure 100, a filter element assembly 200, a temperature regulating device 400, a heat exchange water path, and a liquid path control device; the water path structure 100 is provided with a water inlet 110, a wastewater outlet 120, and a water outlet; the filter element assembly 200 is provided with a water inlet end 211, a purified water end 213, and a wastewater end 212, the wastewater end 212 is connected to the wastewater outlet 120, and the purified water end 213 is connected to the water outlet; the temperature regulating device 400 includes a heat exchange member 410 and a heat exchange assembly 420, and the heat dissipation end of the heat exchange member 410 is thermally coupled to the heat exchange assembly 420; the heat exchange water path includes an input water path and an output water path, the input end of the heat exchange member 410 is connected to at least one of the wastewater end 212, the purified water end 213, and the water inlet 110 through a plurality of input water paths respectively, and the output end of the heat exchange member 410 is connected to at least one of the wastewater outlet 120, the heat exchange assembly 420, and the water inlet end 211 through a plurality of output water paths respectively; the liquid path control device is connected to the heat exchange water path, and the liquid path control device is used to switch the connection between the heat exchange member 410 and the plurality of input water paths and the output water paths.

[0027] The water treatment device 10 of this embodiment adopts a temperature regulating device 400 with water path heat exchange. The heat exchange member 410 is connected to the wastewater end 212, the purified water end 213, and the water inlet 110 through a plurality of input water paths respectively. Combined with the liquid path control device, different input water paths and corresponding output water paths can be flexibly switched, realizing efficient heat conversion between multiple water sources. Compared with the traditional air-cooled method, this embodiment can effectively avoid the influence of ambient temperature on the refrigeration effect and maintain the stable performance of the temperature regulating device 400.

[0028] In one embodiment, the water treatment device 10 further includes a water storage tank 300. The water storage tank 300 is respectively connected to the purified water end 213 and the water outlet, and the heat dissipation end of the heat exchange member 410 is thermally coupled to the heat exchange assembly 420. This embodiment increases the water flow rate and heat exchange area through the heat exchange water path, effectively improving the heat exchange efficiency and realizing the fast refrigeration function. The thermal coupling design of the water storage tank 300 and the cold end of the heat exchange member 410 further enhances the stability of cold water storage and temperature control, promoting the improvement of the refrigeration effect.

[0029] In the water treatment device 10 of this embodiment, a liquid path control device is used to achieve multi-way mixing and switching between the heat exchanger 410 and multiple input water paths and corresponding output water paths. It can flexibly switch the water paths according to the water source type of the input mixed water source, realizing efficient heat conversion and reasonable pipeline distribution. At the same time, during the water path circulation heat exchange process, by circulating high-temperature water (such as hot water not less than 55°C) in the pipeline, thermal sterilization of the storage water tank 300 and the filter element can be achieved, improving the sanitary performance of the water treatment device 10. The structure of this embodiment is compact. The heat exchange assembly 420 replaces the traditional air-cooled heat sink and fan, reducing the device volume and optimizing the overall design flexibility of the water treatment device 10, which is beneficial to the miniaturization and performance improvement of the product.

[0030] Specifically, the water outlet includes a purified water outlet 130 and a cold water outlet 140. The purified water outlet 130 is connected to the filter element assembly 200 and is used to output filtered water. The cold water outlet 140 is connected to the storage water tank 300 and is used to output cold water.

[0031] Furthermore, to achieve a better heat exchange effect, the heat exchanger 410 can be made of high thermal conductivity materials such as copper or aluminum alloy. Copper is preferably used because of its excellent thermal conductivity, which can accelerate the heat transfer speed and thus improve the response speed of water temperature adjustment. When the cold end of the heat exchanger 410 is thermally coupled with the storage water tank 300, clamping, welding, or placing the cold end of the heat exchanger 410 in the storage water tank 300 can be used to ensure good thermal contact, reduce thermal resistance, and improve heat exchange efficiency. At the same time, the structure of the heat exchanger 410 can be designed as a multi-channel flow path structure. Specifically, the water inlet 110 and the wastewater outlet 120 in the water path structure 100 are connected to the heat exchanger 410 through multiple branches, thus forming multiple parallel heat exchange channels. This multi-channel design can increase the contact area between water and the heat exchanger 410, improve the heat exchange rate, and the uniform flow distribution is beneficial to reducing local overheating or overcooling phenomena.

[0032] Specifically, the connection method between the heat exchanger 410 and the heat exchange assembly 420 can adopt a quick connector or a modular connection structure, which is convenient for disassembly and maintenance, improving the maintainability and service life of the device.

[0033] The number of the water inlet 110 and the wastewater outlet 120 in the water path structure 100 can be adjusted according to the design requirements of the water treatment device 10. Specifically, the number of the water inlet 110 and the wastewater outlet 120 can be one, two, or more than two, which is not uniquely limited here. Setting multiple water inlets 110 or wastewater outlets 120 can achieve segmented heat exchange or multi-way parallel heat exchange, further improving the flexibility of water flow regulation and heat exchange efficiency, and meeting the diverse needs in different usage environments.

[0034] It should be noted that the water flow rate has a great influence on the heat exchange efficiency. When the liquid path control device adjusts the water flow rate, the flow rate can be set to multiple gears, which is specifically determined according to the actual design requirements. When the flow rate is too low, insufficient heat exchange occurs, resulting in a decrease in the refrigeration or heating efficiency; while when the flow rate is too high, although the heat exchange speed increases, it may increase the system energy consumption and the pump load, reducing the overall energy efficiency ratio. Therefore, reasonably controlling the flow rate is of great significance for achieving efficient and energy-saving water temperature regulation.

[0035] In some embodiments, the water treatment device 10 further includes a housing structure 600. The housing structure 600 serves as an installation carrier for installing the water path structure 100, the filter element assembly 200, the water storage tank 300, and the temperature adjustment device 400. The housing structure 600 not only provides a stable mechanical support for each functional component but also forms the appearance framework of the overall device, ensuring the reasonable layout and secure fixation of each component.

[0036] Inside the housing structure 600, a middle frame and a cover plate can be provided. The middle frame serves as an internal skeleton and plays a role in carrying and fixing each functional module. The middle frame structure is usually made of metal or high-strength engineering plastics to ensure its structural rigidity and durability. The inside of the middle frame is provided with reserved installation holes and clamping positions, which are convenient for the precise positioning and stable installation of components such as the water path structure 100, the filter element assembly 200, the water storage tank 300, and the temperature adjustment device 400. By reasonably designing the structure of the middle frame, the space waste between components can be effectively reduced, the internal structure of the device can be made compact, and the overall space utilization rate can be improved.

[0037] The cover plate and the middle frame are detachably connected, which is convenient for the daily maintenance and component replacement of the device. This connection method can adopt screw fixation, snap connection, or magnetic attraction design, which is specifically selected according to the actual use environment and maintenance requirements. The screw fixation method has a stable structure and is suitable for occasions that require frequent disassembly and assembly; the snap connection is simple and fast and is suitable for users to perform self-maintenance; the magnetic attraction connection improves the convenience of disassembly and assembly and the overall aesthetics. Through the detachable cover plate design, users or maintenance personnel can easily open the device for filter element replacement, internal cleaning, or fault troubleshooting, significantly improving the usability and maintenance efficiency of the water treatment device 10.

[0038] In addition, the housing structure 600 can also be equipped with a heat insulation layer or a sealing strip to enhance the heat preservation performance and the waterproof and dustproof ability of the device, further improving the stability and service life of the water treatment device 10. The material selection of the housing can also vary according to different application environments. For example, environmentally friendly and durable materials such as ABS plastic and polycarbonate are used, which have good corrosion resistance and mechanical strength and at the same time meet the aesthetic requirements of the appearance design.

[0039] It should be noted that the size and shape of the housing structure 600 can be optimized according to 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 requirements. In the compact design, the housing reduces its volume through modular integration, facilitating installation on a desktop or kitchen countertop. The medium design balances performance and space and is suitable for home and office environments. The large design is applicable to occasions with high requirements for refrigeration capacity and water treatment capacity.

[0040] Specifically, the heat exchanger 410 includes, but is not limited to, a combined structure of a thermoelectric cooler, a compressor, and a heat conducting element. This combined structure aims to optimize the refrigeration efficiency and heat exchange performance of the water treatment device 10, thereby meeting the needs of different users for water temperature adjustment.

[0041] In one embodiment, as an efficient refrigeration element, the thermoelectric cooler has the advantages of small size, light weight, and no moving parts. Its working principle is based on the Peltier effect, where a temperature difference is generated in the semiconductor material through the flow of current, thus achieving heat transfer. In this embodiment, the cold end of the thermoelectric cooler can be in direct contact with the water storage 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 refrigeration capacity and space limitations. The parallel configuration of multiple thermoelectric coolers can increase the refrigeration rate and further improve the heat exchange efficiency. The heat dissipation end of the thermoelectric cooler can achieve the heat conduction function through thermal coupling with the heat exchange component 420 and realize the heat dissipation function through the heat exchange component 420.

[0042] In another embodiment, as the core part of a traditional refrigeration system, the compressor transfers heat by compressing the refrigerant. Its working principle is to compress low-pressure gas into high-pressure gas and remove or absorb heat through the condensation and evaporation processes to achieve more flexible power regulation and higher energy efficiency.

[0043] In some embodiments, the thermoelectric cooler and the compression refrigeration scheme can also be combined. By combining the thermoelectric cooler and the compression refrigeration scheme, the heat exchanger 410 can flexibly switch between refrigeration and heating to meet the diverse water temperature requirements of users. For example, when rapid cooling is required, the system can first enable the thermoelectric cooler for preliminary refrigeration and then further reduce the water temperature in combination with the operation of the compressor. When heating is required, the system can change the flow direction of the refrigerant and use the heat of the compressor for heating. This flexible temperature adjustment mechanism significantly improves the functionality of the water treatment device 10.

[0044] The liquid path control device further includes a control module, which is connected to each valve body through a communication line and is responsible for real-time control and management of the opening and closing states of the valve bodies. The control module can not only implement the function of automatically opening and closing valves, but also dynamically adjust the states of the valve bodies according to the feedback from sensors (such as flow sensors, pressure sensors, water quality sensors, etc.), optimizing the operation efficiency and safety of the water path system. For example, when it detects that the filter element is blocked or the waste water discharge is abnormal, the control module can automatically close the inlet valve 511 or the waste water valve 512 and issue an alarm prompt to ensure the safe operation of the system.

[0045] There are various specific implementation methods for the control module, covering various industrial and embedded control units, such as programmable logic controllers (PLCs), STM32 microcontrollers based on the ARM Cortex-M core, general single-chip microcomputers, field-programmable gate arrays (FPGAs), etc. The selection of different controllers can be reasonably configured according to the complexity of the water treatment device 10, the requirements for response speed, and the cost budget. PLCs have powerful industrial control capabilities and stability and are suitable for large or complex systems; STM32s and single-chip microcomputers are suitable for embedded applications with small size and low power consumption; FPGAs provide highly flexible parallel processing capabilities and are suitable for occasions with special customization requirements for control logic.

[0046] The control module is usually installed inside the device, can collect the operation data of the device in real time, execute the preset program, and achieve precise control and status monitoring of the liquid path valve bodies. This module can also be connected to an external intelligent terminal or cloud platform through a communication interface to support remote management, fault diagnosis, and maintenance, improving the intelligent level and user experience of the water treatment device 10.

[0047] Through the above structural design, the liquid path control device not only achieves precise regulation of the inlet water, waste water, purified water, and cold water flow paths, but also improves the flexibility and safety of the system by combining automation control technologies. This design effectively avoids human operation errors, shortens the response time, and improves the stability and reliability of the overall operation of the water treatment device.

[0048] In one embodiment, the input water path is composed of a first input water path, a second input water path, and a third input water path, each undertaking different functions of water source transportation and heat exchange. The liquid path control device realizes flexible multi-path switching and efficient management of the heat exchange water path through the connection relationship between the set valves and the heat exchange element 410.

[0049] Specifically, the input end of the first input waterway is connected to the wastewater end 212, and the output end is simultaneously connected to the input end of the heat exchanger 410 and the wastewater outlet 120. The first waterway valve 530 is used to control the on-off between the heat exchanger 410 and the wastewater end 212. When the first waterway valve 530 is closed, the wastewater is directly discharged by the filter element assembly 200 to ensure the normal discharge of the wastewater; when the first waterway valve 530 is opened, the wastewater is introduced into the heat exchanger 410 for heat exchange to improve the recovery and utilization rate of the wastewater heat energy. At this time, the liquid path control device can also control the output waterway of the heat exchanger 410 to communicate with the wastewater outlet 120 to realize the wastewater discharge function, or switch to communicate with the heat exchange assembly 420 to complete the hot water circulation, realize the recovery and reuse of the wastewater waste heat, and improve the overall energy efficiency of the system.

[0050] The input end of the second input waterway 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 waterway valve 540 controls the connection state between the heat exchanger 410 and the purified water end 213. When the valve is closed, the purified water is directly output from the filter element assembly 200 to the purified water outlet 130 to ensure continuous and stable purified water supply; when the valve is opened, the purified water is transported to the heat exchanger 410 for heat exchange to meet the water temperature adjustment requirements at different temperatures. At this time, the liquid path control device can control the output waterway of the heat exchanger 410 to communicate with the wastewater outlet 120 to realize wastewater discharge, or communicate with the heat exchange assembly 420 to realize hot water circulation, and can also control the heat exchanger 410 to communicate with the storage tank 300 to sterilize the inside of the storage tank 300 through the high-temperature heat exchange water to ensure the water quality hygiene in the storage tank.

[0051] The third input waterway is connected to the water inlet 110 to input an external water source such as tap water and introduce it into the heat exchanger 410. The connection of the third input waterway enables the system to use the external water source for auxiliary heat exchange and water temperature adjustment. The liquid path control device realizes the function of discharging wastewater by communicating the output waterway of the heat exchanger 410 with the wastewater outlet 120; or communicates with the heat exchange assembly 420 to realize hot water circulation; it can also control the heat exchanger 410 to communicate with the filter element assembly 200 to send the heat-exchanged water into the filter element assembly 200 for filtration and then enter the storage tank 300 to realize high-temperature sterilization of the storage tank 300, thereby improving the hygiene and safety of the entire waterway system.

[0052] In summary, through the reasonable configuration of the first, second, and third input waterways and the precise control of the first waterway valve 530 and the second waterway valve 540 in the liquid path control device, the water treatment device 10 can achieve flexible switching and efficient heat exchange of wastewater, purified water, and external water sources in the heat exchange element 410. At the same time, it takes into account multiple functions such as wastewater discharge, heat exchange cycle, and high-temperature sterilization, greatly improving the efficiency of water temperature regulation, system energy conservation, and water quality safety guarantee ability. This multi-path heat exchange design not only enhances the adaptability and flexibility of the device but also meets the high standards of users' diverse requirements for water quality and water temperature.

[0053] In one embodiment, the liquid path control device further includes a temperature sensor for real-time monitoring of the temperature signal in the heat exchange water path and feeding back the collected temperature data to the control module. The control module intelligently regulates the water source output by the heat exchange element 410 according to a preset temperature threshold to achieve automatic switching of the water flow path.

[0054] Specifically, when the temperature sensor detects that the water temperature in the heat exchange water path exceeds the set threshold, the control module will instruct the liquid path control device to guide the heat exchange water to the wastewater outlet 120 for waste discharge treatment, avoiding the circulation of high-temperature water bodies in the system, preventing equipment overheating or water quality deterioration, and ensuring the safe and stable operation of the system and water quality hygiene.

[0055] Conversely, when the water temperature does not exceed the preset threshold, the control module controls the heat exchange water to flow along the internal circulation path of the water treatment device 10 to achieve efficient heat exchange and recycling of the water source among the water storage tank 300, the heat exchange element 410, and the heat exchange assembly 420. At this time, the water temperature in the water path remains within a reasonable range, capable of continuously providing a stable water temperature regulation effect, while improving energy efficiency through circulating heat exchange and saving energy consumption.

[0056] This temperature sensing and intelligent control mechanism ensures that the temperature of the heat exchange water path is always within a controllable range, avoiding both equipment damage and water quality safety hazards caused by excessive temperature and achieving efficient and energy-saving water temperature regulation, thus enhancing the performance stability and use safety of the water treatment device 10. In addition, the control module can also make comprehensive judgments by combining other sensor data (such as flow sensors, water quality sensors) to further optimize the water path control strategy and meet the precise water temperature management requirements under different working conditions. The installation position of the temperature sensor can be flexibly set. It can be used to detect the temperature of the heat exchange water source in the heat exchange element 410 or to monitor the temperature signal of the heat exchange assembly 420. The specific design can be adjusted according to actual needs and system structure, and there is no unique limitation. Multi-point temperature acquisition can provide more comprehensive temperature data support for the liquid path control device, further optimizing the liquid path switching strategy and improving the heat exchange efficiency and equipment response speed.

[0057] Specifically, the heat exchange component 420 includes a heat exchange pipeline, and both ends of the heat exchange pipeline are respectively connected to the input end and the output end of the heat exchange element 410, thus forming a closed circulation loop. This design enables the heat exchange medium in the temperature control device 400 to circulate between the heat exchange element 410 and the heat exchange pipeline, achieving efficient heat transfer and dissipation.

[0058] In this circulation loop, the heat exchange medium absorbs or releases heat when passing through the heat exchange element 410, and then flows through the heat exchange pipeline. The heat is effectively dissipated to the external environment or other heat dissipation devices by using the large surface area of the heat exchange pipeline, completing the heat exchange process. The design of the heat exchange pipeline can adopt a serpentine shape, a coil shape or a multi-channel structure to increase the contact area with air or a cooling medium and improve the heat dissipation efficiency.

[0059] Through the configuration of this circulation loop, the temperature control device 400 can continuously and stably maintain the temperature of the heat exchange medium within an ideal range, avoiding the performance degradation of the heat exchange medium caused by heat accumulation, and ensuring the refrigeration effect and refrigeration speed of the water treatment equipment 10. In addition, the closed structure of the circulation loop also helps to reduce the leakage risk of the heat exchange medium and improve the safety and reliability of the system.

[0060] In one embodiment, in order to avoid the backflow of wastewater contaminating the purified water filter element assembly 200, setting a check valve in the liquid path control device is an effective technical means. The input end of the check valve is connected to the filter element assembly 200, and the output end is respectively connected to the wastewater outlet 120 and the heat exchange element 410. Through the setting of this check valve, it can be ensured that the wastewater can only be discharged in one direction, preventing the wastewater output by the heat exchange element 410 from flowing back to the filter element assembly 200, and avoiding the impurities or bacteria carried in the wastewater from entering the filter element in the reverse direction, ensuring the service life of the filter element assembly 200 and the safety and stability of the purified water quality.

[0061] The check valve generally can adopt various forms such as a spring check valve, a ball valve check valve or a diaphragm check valve. The specific selection can be flexibly determined according to the water pressure, water flow rate and installation space of the system. The spring check valve has sensitive response, small volume and simple structure, and is suitable for the inside of water treatment equipment with limited installation space; the ball valve check valve has good sealing performance and strong corrosion resistance, and is suitable for long-term operating environments; the diaphragm check valve can effectively reduce the flow resistance and improve the water flow efficiency. Specifically, the material of the check valve can be food-grade plastic, stainless steel or copper alloy to balance durability and safety.

[0062] In another embodiment, to further optimize the wastewater discharge path and prevent backflow pollution, 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 water paths. This design enables the wastewater from the filter element assembly 200 and the wastewater from the heat exchanger 410 to be discharged through different passages respectively, avoiding the cross-flow of the two-way wastewater, and thus more effectively preventing the wastewater from flowing back to the filter element assembly 200.

[0063] By separately setting the first wastewater outlet and the second wastewater outlet, the risk of cross-contamination in the water path can be reduced. At the same time, it is convenient to independently adjust and control the flow rate and pressure of the two wastewater lines respectively, improving the overall stability and safety of the system. Specifically, the number of the first wastewater outlet and the second wastewater outlet can each be one, or can be set to two or more according to the design requirements of the water treatment device 10 to achieve segmented discharge or parallel discharge of multiple-way wastewater, further improving the wastewater discharge efficiency and the flexibility of water path management.

[0064] In addition, the pipeline connection part and the sealing structure of the first wastewater outlet and the second wastewater outlet can adopt quick connectors or snap connections, which are convenient for disassembly and maintenance, ensure reliable sealing of the connection, and avoid wastewater leakage. This design not only improves the maintenance convenience of the equipment, but also enhances the safety performance of the overall system.

[0065] In summary, whether it is to achieve the one-way flow of wastewater by setting a one-way valve or to achieve the independent discharge of the wastewater path by separately setting multiple wastewater outlets, it effectively avoids the pollution of the filter element assembly 200 by wastewater backflow, ensures the water quality safety of the water treatment device 10 and the long-term stable use of the filter element, and improves the use reliability of the equipment and the user experience.

[0066] Furthermore, the heat exchange assembly 420 includes a circulation pump 421, and the circulation pump 421 is connected to the heat exchanger 410 through a pipeline to form a loop.

[0067] By setting the cooperation of the circulation pump 421 and 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 response speed of the system.

[0068] In this embodiment, both ends of the heat exchanger 410 can be respectively connected to the circulation pump 421 to form a complete circulation loop, or the circulation pump 421 is arranged in the above heat exchange pipeline to achieve the function of driving the heat exchange medium to be conveyed in the circulation loop. Specifically, when the circulation pump 421 is directly connected to the heat exchanger 410, the flow rate and flow of the heat exchange medium can be effectively controlled, ensuring the rapid transfer and dissipation of heat during the heat exchange process. In this configuration, the liquid path control device can intelligently adjust the operating state of the pump according to the real-time temperature signal to achieve dynamic control.

[0069] In summary, by introducing the circulation pump 421, the heat exchange assembly 420 not only improves the transportation efficiency of the heat exchange medium, but also enhances the flexibility and adaptability of the system, ensuring that the water treatment device 10 can maintain high-efficiency water temperature regulation performance under various working conditions.

[0070] In one embodiment, the heat exchange assembly 420 further includes a heat exchange container 422, which is respectively connected to the circulation pump 421 and the heat exchange element 410 to form a complete heat exchange water circuit. The main purpose of setting the heat exchange container 422 is to increase the storage capacity of the heat exchange medium, thereby enhancing the heat exchange capacity and stability of the system.

[0071] Specifically, as a buffer and storage unit for the heat exchange medium, the heat exchange container 422 can effectively alleviate the problem of uneven flow of the heat exchange medium in the system. When the temperature control device 400 operates, 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 when the heat exchange load is large or the instantaneous demand changes. In this way, the heat exchange efficiency of the system is significantly improved, and the refrigeration speed becomes more rapid and stable.

[0072] In addition, setting the heat exchange container 422 can also realize the recirculation of the heat exchange medium. When the heat exchange medium does not circulate in the heat exchange water circuit, it can be temporarily stored in the heat exchange container 422 to avoid heat dissipation or accumulation in a certain part of the system. This design not only helps to maintain the stability of the water temperature, but also reduces the frequent replenishment and discharge of the heat exchange medium, improving the operation efficiency and economy of the system.

[0073] In summary, adding the heat exchange container 422 not only enhances the storage and recirculation capabilities of the heat exchange medium, but also improves the heat exchange efficiency of the temperature control device 400 and the overall stability of the system, effectively meeting the heat management requirements of the water treatment device 10 under high load and variable working conditions.

[0074] In one embodiment, the heat exchange assembly 420 further includes a hot water tank, which is thermally coupled to the heat exchange element 410 and is used to heat the water in the hot water tank. By setting the hot water tank, the water treatment device 10 can not only realize the refrigeration adjustment of cold water, but also realize the heating output of hot water, expanding the functionality of the device and meeting the diverse needs of users for cold and hot water.

[0075] 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 can be heated by other heating media through heat transfer by the heat exchange element 410. Such a design enables the hot water tank to flexibly receive hot water from different sources, which can not only ensure the temperature stability of the hot water, but also improve the heat exchange efficiency and energy consumption utilization rate of the system.

[0076] When the hot water in the hot water tank is filtered water, the water treatment device 10 can provide safe and hygienic hot drinking water, meet the user's requirements for the temperature of drinking water, and improve the 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 the drinking standard, and is heated to the set temperature for convenient daily use.

[0077] On the other hand, when the hot water in the hot water tank is tap water or replaced hot water, it can be used in scenarios with a large demand for hot water in daily life but not for drinking, such as cleaning, cooking, etc. 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 convenience of use.

[0078] By integrating the hot water tank, the water treatment device 10 has the function of a combined cold and hot water machine, significantly improving the comprehensive performance and application range of the device. The integrated design of cold and hot water not only saves space and installation costs, but also simplifies user operation and enhances the market competitiveness of the device. In addition, the thermal coupling method between the hot water tank and the heat exchanger 410 can be diversified, including but not limited to clamping, welding, embedded structure, etc., to ensure good heat transfer efficiency and reduce heat loss. The material selection of the hot water tank should consider heat resistance, corrosion resistance and hygiene requirements. Common materials include food-grade stainless steel, polypropylene (PP), etc., which not only ensure safe use but also extend the service life of the device.

[0079] In this embodiment, the filter element assembly 200 is provided with a water inlet end 211, a wastewater end 212 and a purified water end 213. The water inlet end 211 is used to introduce the water source, and the water source is filtered by the filter element assembly 200. The filter element assembly 200 outputs the treated purified water from the purified water end 213, and the wastewater is discharged from the wastewater end 212.

[0080] Specifically, the wastewater end 212 is connected to the heat exchanger 410 and is used to use the wastewater discharged from the filter element assembly 200 as a heat exchange medium for heat exchange. By introducing the wastewater into the heat exchanger 410, the waste heat or cold 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 remaining heat energy of the wastewater, reduces energy waste, but also reduces the operating cost of the system, which is of positive significance for energy conservation and environmental protection.

[0081] The purified water end 213 is connected to the storage water tank 300 and is used to transport the filtered purified water to the storage water tank 300, so that the filtered water can enter the temperature control device 400 for refrigeration and cooling treatment. This structure ensures the water quality safety of the water entering the storage water tank 300 and meets the drinking standard, and at the same time realizes the effective control of the water temperature in the storage water tank, improving the user's drinking experience.

[0082] 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 is preferably installed with a reverse osmosis (RO) filter element, which can effectively remove dissolved solids, harmful substances and microorganisms in water, ensuring the high purity and safety of the purified water. In addition, in other embodiments, the filter element assembly 200 can also be installed with other types of filter elements, such as activated carbon filter elements, ultrafiltration membrane filter elements, nanofiltration membrane filter elements or composite filter elements, etc. The selection of different filter elements can be adjusted according to the water quality situation, filtration requirements and cost budget to meet the diverse needs of different users.

[0083] Specifically, the number of filter elements in the filter element assembly 200 can be one, two or more. Multiple filter elements can be configured in series or in parallel to achieve a more efficient filtration effect or extend the service life of the filter elements. The use of multiple filter element combinations not only improves the purification efficiency, but also enables hierarchical filtration of different pollutants, ensuring the stability and reliability of the filtered water quality. In addition, the connection mode between the wastewater end 212 and the heat exchange element 410 can adopt various forms such as pipeline sealed connection, quick connector or threaded connection to ensure the tightness and safety of the wastewater flowing to the heat exchange element 410, preventing leakage and pollution.

[0084] In one embodiment, the filter element assembly 200 includes a filter element mounting seat 210. The filter element mounting seat 210 is connected to the water circuit structure 100, and the filter element mounting seat 210 is used to mount the external water purification filter element 20.

[0085] This design enables the water purification filter element 20 to be conveniently positioned, disassembled and assembled, greatly improving the filter element replacement efficiency and reducing the operation complexity of users during maintenance.

[0086] The structural design of the filter element mounting seat 210 should consider the fixing and sealing performance of the filter element. Specifically, the filter element mounting seat 210 can adopt snap-on, threaded or quick-insert connection methods to ensure the stability and safety of the filter element during use. Among them, the snap-on design is convenient for quick disassembly and assembly, while the threaded connection provides better sealing performance, which is particularly important in high water pressure environments. The quick-insert connection can provide a more convenient operation experience when users need to frequently replace the filter element.

[0087] Specifically, the water inlet end 211, the wastewater end 212 and the purified water end 213 are provided on the filter element mounting seat 210, ensuring the efficient progress of the filtration process within the filter element assembly 200. The wastewater end 212 is responsible for discharging the wastewater after being treated by the filter element, while the purified water end 213 transports the filtered purified water to the storage tank 300. Through this structural design, the length of the pipeline and the connection points can be effectively reduced, reducing the potential leakage risk in the system and improving the overall safety and reliability.

[0088] In practical applications, the design of the filter element assembly 200 can be flexibly adapted to different types of filter elements to meet diverse water treatment requirements. For example, the filter element mounting seat 210 can be compatible with various filter element types such as reverse osmosis (RO) filter elements, activated carbon filter elements, ultrafiltration membrane filter elements, etc., and users can freely choose the appropriate filter element type according to the specific water source situation and purification requirements.

[0089] Furthermore, the filter element assembly 200 further includes a filter element booster pump 220, and the filter element booster pump 220 is connected in the water pipeline between the water circuit structure 100 and the filter element mounting seat 210.

[0090] By setting the filter element booster pump 220, the conveying efficiency of the water source and the purification effect can be significantly improved, especially when the water purification filter element 20 uses a reverse osmosis (RO) filter element.

[0091] The working principle of the filter element booster pump 220 is to increase the flow pressure of the water source to ensure that the water source can pass through the water purification filter element 20 at a higher flow rate, thereby improving the filtration effect. The RO filter element has relatively high requirements for the inlet water pressure, and the filter element booster pump 220 can increase the pressure of the water source to this range to ensure that the RO filter element can effectively remove dissolved solids and harmful substances in the water and improve the safety and purity of the purified water quality.

[0092] The configuration of the filter element booster pump 220 not only improves the conveying efficiency of the water source but also extends the service life of the filter element to a certain extent. By maintaining an appropriate filtration pressure, the working environment of the water purification filter element 20 is more stable, thereby reducing the damage caused by pressure fluctuations. In addition, the setting of the filter element booster pump 220 can also effectively reduce the residence time of the water source during transportation, reduce the risk of bacterial growth, and ensure the hygienic safety of the purified water.

[0093] Furthermore, the water storage tank 300 includes a refrigeration part 310 and a cold storage part 320. The refrigeration part 310 is connected to the cold storage part 320, and the refrigeration part 310 is thermally coupled to the cold end of the heat exchange element 410.

[0094] In this embodiment, the refrigeration part 310 is used to realize the refrigeration function of water, and can absorb the heat in the water through the refrigeration cycle device, thereby reducing the water temperature; the cold storage part 320 is used to store the cold water cooled by the refrigeration part 310, playing the role of cold water buffering and reserve, so that the water storage tank 300 can continuously and stably provide cold water to users.

[0095] Specifically, the thermal coupling between the refrigeration unit 310 and the cold end of the heat exchanger 410 means that the two maintain close heat conduction contact during the heat exchange process, enabling the cold 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 refrigeration efficiency, and shorten the response time for the water temperature to decrease.

[0096] The cold storage part 320, as a storage container for cold water, its capacity and structural design directly affect the cold storage capacity of the water storage tank 300. The cold storage part 320 can be insulated with heat-insulating materials to reduce the loss of cold energy and ensure that the cold water remains at a low temperature for a certain period of time. Specifically, the capacity of the cold storage part 320 can be set according to the usage requirements of the water treatment device 10, and is specifically selected according to the actual usage environment and user needs to meet the requirements of different cold water supply amounts. Too small a capacity will lead to unstable cold water supply, prone to frequent start-up of refrigeration, increasing energy consumption and equipment wear; too large a capacity will increase the equipment volume and cost, and at the same time may cause the cold water to stay for too long, affecting the freshness of the water quality.

[0097] Between the cold storage part 320 and the refrigeration unit 310, a partition or a heat conduction structure can be set so that the two parts can not only achieve the necessary heat exchange, but also be effectively separated to prevent the cold water from being directly disturbed by the refrigeration cycle of the refrigeration unit 310, ensuring the temperature of the cold water in the water storage tank is uniform and stable. In addition, the design of the cold storage part 320 should also consider being convenient for cleaning and maintenance to ensure the safety and hygiene of the cold water quality.

[0098] In an embodiment, the water storage tank 300 further includes a first cold water pump 330, and the first cold water pump 330 is respectively connected to the refrigeration unit 310 and the cold storage part 320. By setting the first cold water pump 330, the conveying efficiency of the cold water can be significantly improved, ensuring that the circulation of the cold water between the refrigeration unit 310 and the cold storage part 320 is smoother and more stable.

[0099] Specifically, the setting of the first cold water pump 330 can overcome the problem of insufficient flow velocity of the water flow in the pipeline due to factors such as resistance, water pressure difference, and pipeline length, enabling the cold water to be quickly conveyed from the refrigeration unit 310 to the cold storage part 320, or from the cold storage part 320 to the water supply port at the user end. This not only ensures the full utilization of the low-temperature water resources in the water storage tank 300, but also effectively avoids the phenomenon of cold water retention and temperature rise, improving the response speed of cold water supply and the user experience.

[0100] In addition, the first cold water pump 330 can operate continuously or be designed for intermittent operation, and cooperate with the temperature sensor and flow sensor to achieve intelligent control. Through intelligent control, the cold water pump can automatically adjust startup and shutdown according to the water temperature change in the water storage tank and the user's water consumption demand, further improving the energy-saving effect and usability of the system.

[0101] With the setting of the first cold water pump 330, the water circulation efficiency between the refrigeration unit 310 and the cold storage unit 320 is improved, the temperature distribution of the cold water in the water storage tank 300 is more uniform, reducing energy waste caused by temperature differences, thereby improving the energy efficiency and stability of the overall refrigeration system. At the same time, the rapidly circulating cold water can better meet the user's requirements for cold water volume and temperature, improving the operation effect and reliability of the water treatment equipment 10.

[0102] Furthermore, the water storage tank 300 further includes a second cold water pump 340, which is connected to the cold storage unit 320 and is used to pump out cold water outward. By setting the second cold water pump 340, the output efficiency of cold water can be significantly improved, ensuring that the user end can quickly and stably obtain cold water with the required temperature and flow rate.

[0103] Specifically, the setting of the second cold water pump 340 solves problems such as insufficient flow and unstable pressure that may occur when relying only on gravity or simple pipeline pressure for water supply. Especially when the user's water consumption is large, the pipeline is long, and there is a large water pressure loss, it can effectively ensure 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 end, reducing the risk of water supply delay and water temperature rise, and improving the user's drinking experience.

[0104] In addition, the working mode of the second cold water pump 340 can also be designed for intelligent control. For example, in cooperation with flow sensors, pressure sensors, and temperature sensors, it can automatically start and stop according to the actual water consumption demand of users, effectively reducing energy consumption and extending the service life of the pump. Intelligent control can also avoid long-term idling or frequent startup, reducing mechanical wear and failure rate.

[0105] The material selection of the second cold water pump 340 is also very important. The pump body and internal fluid contact components are preferably made of corrosion-resistant materials that meet the drinking water hygiene standards, such as food-grade stainless steel, food-grade engineering plastics, etc., to ensure water quality safety and equipment durability. The sealing structure should adopt a reliable mechanical seal or magnetic seal design to prevent leakage and pollution, ensuring the safe and stable operation of the system.

[0106] By setting the second cold water pump 340, the water storage tank 300 can more effectively transport the chilled water to the user end, not only improving the output efficiency of the chilled water, but also optimizing the water supply performance and user experience of the entire water treatment device 10. This design ensures sufficient cold water supply pressure and stable water output, while reducing the phenomenon of chilled water retention in the refrigeration unit 310 and the cold storage unit 320 caused by insufficient water pressure, further improving the refrigeration efficiency and energy-saving effect of the system.

[0107] Specifically refer to Figure 2 In the illustrated embodiment, the liquid path control device is provided with a plurality of valve bodies, including an inlet valve 511, a waste water valve 512, a purified water valve 513, and a cold water valve 514 respectively. These valve bodies are all arranged on the corresponding water pipelines, corresponding to the water inlet pipeline of the water inlet 110, the waste water pipeline of the waste water outlet 120, the purified water pipeline of the purified water end 213 of the filter element assembly 200, and the cold water pipeline of the cold water outlet 140 respectively. The setting of the valve body can realize the opening and closing control of different water flows in the water path system, ensuring that the fluid path of the system can be effectively managed and meeting the water use requirements of different operation stages of the water treatment device 10.

[0108] Specifically, the inlet valve 511 is used to control the entry of the external water source. When the water treatment device 10 is started, the control module can open the inlet valve 511 to allow water to enter the filter element assembly 200 for purification treatment; the waste water valve 512 is used to control the discharge of waste water, and in cooperation with the filtration process of the purification filter element 20, effectively discharges the waste water generated by the filter element to avoid backflow or leakage of waste water. The purified water valve 513 is arranged on the pipeline of the purified water outlet 130 to control the output of the 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 arranged on the pipeline of the cold water outlet 140 to control the flow of the cold water output from the water storage tank 300 to the user end, meeting the immediate demand of the user for cold water.

[0109] The valve body is preferably an electromagnetic valve because of its fast response speed, precise control, and easy integration into the automation system. The electromagnetic valve realizes the rapid opening and closing of the valve through the on-off of the electromagnetic coil, has good sealing performance and a long service life, and is suitable for the precise regulation of water flow in the water treatment device 10. The structural forms of the electromagnetic valve can include two types: direct acting type and pilot type. The specific selection can be flexibly determined according to system pressure, flow requirements, and cost considerations to meet the control requirements under different working conditions.

[0110] In the water treatment device 10 of this embodiment, the liquid path control device is used to realize the multi-way mixing and switching of the heat exchange element 410 with multiple input water paths and corresponding output water paths, and can flexibly mix and output water sources according to the types of different input water sources, realizing efficient heat conversion and reasonable pipeline distribution. Specifically, the heat exchange element 410 is controlled by a switching valve to establish connections with at least two water paths among the wastewater end 212, the purified water end 213, or the water inlet 110, and at the same time, the corresponding output water path is switched to communicate with the wastewater outlet 120, the heat exchange assembly 420, or the water storage tank 300.

[0111] The technical effects of multi-way mixing are mainly reflected in the following aspects: First, it can improve the feedback efficiency of the water treatment device 10, improve the convenience of use, and reduce the work of the valve body during the control process, improving the durability of the water treatment device 10; Second, the liquid path control is accurate, and it can automatically or manually select a suitable mixed water source for heat exchange according to actual needs, improving the flexibility and response speed of water temperature regulation; Third, the mixing and switching reduce the complexity of the system, simplify the water path structure, facilitate maintenance and fault diagnosis, and improve the reliability and service life of the device; Finally, this design is conducive to achieving energy-saving operation, and improves the overall energy efficiency by reasonably allocating the water path flow rate and heat exchange method.

[0112] The present invention also provides a water path 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 path control method specifically includes the following steps: Step S1: The liquid path control device switches the heat exchange element 410 to be connected to multiple water source water paths among the water source output from the wastewater end 212, the water source output from the purified water end 213, and the water source input from the water inlet 110; Step S2: When the liquid path control device controls the first water source output from the wastewater end 212 to be input into the heat exchange element 410, execute at least one of the following control modes: Mode A1: Drive the first water source to circulate in the temperature adjustment device 400; Mode A2: Drive the first water source to be discharged through the wastewater outlet 120; Step S3: When the liquid path control device controls only the second water source output from the purified water end 213 to be input into the heat exchange element 410, execute at least one of the following control modes: Mode B1: Drive the second water source to circulate in the temperature adjustment device 400; Mode B2: Drive the second water source to be discharged through the wastewater outlet 120; Mode B3: Drive the second water source to be transported to the water storage tank 300; Step S4: When the liquid path control device controls the third water source output from the water inlet 110 to be input into the heat exchange element 410, execute at least one of the following control modes: Mode C1: Drive the third water source to circulate in the temperature control device 400; Mode C2: Drive the third water source to be discharged through the wastewater outlet 120; Mode C3: Drive the third water source to be transported to the filter element assembly 200.

[0113] The waterway control method provided by the present invention realizes the efficient flow and heat management of the waterway in the water treatment device 10 by means of multi-way mixing switching of the waterways between the heat exchange element 410, the wastewater end 212, the purified water end 213 and the water inlet 110 and flexible execution of corresponding multiple control modes. It not only improves the refrigeration speed and energy-saving performance, but also ensures the water quality safety and the sanitary management of the system to realize the functions of heat exchange cycle, heat exchange and waste discharge, filter element flushing, and water storage tank disinfection, significantly enhancing the comprehensive performance of the water treatment device.

[0114] Specifically, when driving the water source to circulate in the temperature control device 400, the heat exchange water source can flow through the heat exchange element 410, the circulation pump 421 and the heat exchange container 422 in sequence and then return to the heat exchange element 410 to realize the circulating operation of the heat exchange water source.

[0115] Furthermore, the liquid path control device further includes a circulation valve 521, a refrigeration valve 522, a disinfection valve 523 and a filter element valve 524. The waterways of the water treatment device 10 in this embodiment are constituted as follows: The heat exchange element 410, the circulation pump 421 and the heat exchange container 422 are connected in sequence to form a circulating waterway, and the circulation valve 521 is arranged on the circulating waterway; The purified water end 213 is connected to the input end of the water storage tank 300 to form a cold water input waterway; the refrigeration valve 522 is arranged on the cold water input waterway; The output end of the heat exchange element 410 is connected to the input end of the water storage tank 300 to form a disinfection waterway; the disinfection valve 523 is arranged on the disinfection waterway; The output end of the heat exchange element 410 is connected to the water inlet end 211 to form a filter element return waterway; the filter element valve 524 and the filter element booster pump 220 are arranged on the filter element return waterway.

[0116] The operation principle of the water treatment device 10 is as follows: When driving the heat exchange water source to exchange heat through the heat exchange element 410, first close the refrigeration valve 522 to prevent the heat exchange 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 stability of the water temperature and the quality of the cold water in the water storage tank 300.

[0117] When the mixed water source to be driven includes the first water source (i.e., wastewater) output from the wastewater end 212 to enter the heat exchange element 410 for heat exchange; Open: the first waterway valve 530, and the second waterway valve 540 and / or the water inlet valve 511; The mixed water source mixed with the first water source can enter the heat exchanger 410 through the first input waterway for heat exchange.

[0118] At this time, the liquid path control device can switch the output waterway to mode A1: Close: waste water valve 512, refrigeration valve 522, disinfection valve 523, filter element valve 524; Open: circulation valve 521; Thus, the heat exchange water source can be driven to circulate in the temperature control device 400 to achieve the heat exchange function.

[0119] At this time, the liquid path control device can switch the output waterway to mode A2: Close: circulation valve 521, refrigeration valve 522, disinfection valve 523, filter element valve 524; Open: waste water valve 512; Thus, the heat exchange water source can be driven to discharge waste water through the waste water end 212.

[0120] When only the second water source (i.e., purified water) output from the purified water end 213 needs to be driven into the heat exchanger 410 for heat exchange; Close: purified water valve 513, first waterway valve 530, inlet valve 511, refrigeration valve 522; Open: second waterway valve 540; Only the second water source enters the heat exchanger 410 through the second input waterway for heat exchange.

[0121] At this time, the liquid path control device can switch the output waterway to mode B1: Close: waste water valve 512, refrigeration valve 522, disinfection valve 523, filter element valve 524; Open: circulation valve 521; Thus, the heat exchange water source can be driven to circulate in the temperature control device 400 to achieve the heat exchange function.

[0122] At this time, the liquid path control device can switch the output waterway to mode B2: Close: circulation valve 521, refrigeration valve 522, disinfection valve 523, filter element valve 524; Open: waste water valve 512; Thus, the heat exchange water source can be driven to discharge waste water through the waste water end 212.

[0123] At this time, the liquid path control device can switch the output waterway to mode B3: Close: waste water valve 512, circulation valve 521, filter element valve 524; Open: disinfection valve 523; In one embodiment, when the disinfection valve 523 is opened, high-temperature purified water enters the water storage tank 300, and high-temperature water at 60°C can be circulated 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., and is not uniquely limited here.

[0124] Thereby, the heat exchange water source can be driven to be transported to the water storage tank 300 for high-temperature disinfection.

[0125] When it is necessary to drive the third water source (i.e., tap water) input from the water inlet 110 to enter the heat exchanger 410 for heat exchange; Open: the water inlet valve 511; The mixed water source mixed with the third water source can enter the heat exchanger 410 through the third input waterway for heat exchange.

[0126] At this time, the liquid path control device can switch the output waterway to mode C1: Close: the wastewater valve 512, the refrigeration valve 522, the disinfection valve 523, the filter element valve 524; Open: the circulation valve 521; Thereby, the heat exchange water source can be driven to circulate in the temperature control device 400 to achieve the heat exchange function.

[0127] At this time, the liquid path control device can switch the output waterway to mode C2: Close: the circulation valve 521, the refrigeration valve 522, the disinfection valve 523, the filter element valve 524; Open: the wastewater valve 512; Thereby, the heat exchange water source can be driven to discharge wastewater through the wastewater end 212.

[0128] At this time, the liquid path control device can switch the output waterway to mode C3: Close: the circulation valve 521, the disinfection valve 523, the purified water valve 513, the second waterway valve 540; Open: the filter element valve 524, the refrigeration valve 522; Thereby, the heat exchange water source can be driven to be transported to the filter element assembly 200 for filtration, and the filtered heat exchange water is transported to the water storage tank 300.

[0129] Specifically, for example, when the temperature of the heat exchange water source exceeds the preset threshold, the liquid path control device switches to modes A2, B2, and C2. The water flows through the heat exchange member 410 and is discharged from the waste water outlet 120, forming a one-way flowing heat exchange water path. This one-way conveying mode helps to quickly remove the excessive heat in the heat exchange water source. By utilizing the characteristics of the lower temperature and larger flow rate of the external water source, the temperature of the heat exchange water source can be rapidly reduced, preventing the overall system temperature from being too high and improving the safety and stability of the equipment. In this mode, the heat exchange efficiency and the heat exchange effect of the heat exchange member 410 can be improved, ensuring the continuous conveyance of the heat exchange water source and the timely discharge of the waste water, and avoiding water flow stagnation and reduction of the heat exchange efficiency.

[0130] When the temperature of the heat exchange water source does not exceed the threshold, modes A1, B1, and C1 can be adopted. The heat exchange water source forms a closed-loop cycle conveyance between the heat exchange member 410 and the heat exchange container 422. At this time, the heat exchange water source continuously flows through the heat exchange loop, effectively maintaining the temperature of the heat exchange water source evenly and stably, reducing the influence of temperature fluctuations on the system, and improving the overall heat exchange efficiency and energy-saving effect.

[0131] When the temperature of the heat exchange water source does not exceed the threshold, mode B3 can also be adopted. The purified water for heat exchange can be conveyed to the storage tank 300 after heat exchange, and the storage tank 300 can be disinfected by high temperature, making full use of the heat energy.

[0132] When the temperature of the heat exchange water source does not exceed the threshold, mode C3 can also be adopted. The purified water for heat exchange can be conveyed to the filter element assembly 200 after heat exchange, and the filter element assembly 200 can be flushed by high temperature to improve the flushing effect. The advantage of this flushing process is that the water source output by the heat exchange member 410 is used as the flushing medium. After heat exchange adjustment, the water temperature is usually within a suitable temperature range, which helps to improve the flushing effect, promote the stripping of sediments and impurities in the filter element, and extend the service life of the filter element. At the same time, the flushing process accurately controls the water flow path and flow rate through the liquid path control device, enabling efficient and uniform flushing, avoiding local fouling and blockage phenomena, and ensuring the filtering performance and water quality safety of the filter element. The technical solution of flushing the filter element assembly 200 with warm water or hot water can significantly improve the cleaning effect and service life of the filter element. Specifically, compared with normal temperature water, warm water or hot water has stronger dissolving ability and higher heat energy transfer efficiency, which makes the organic pollutants, oil substances, and some microorganisms on the filter element easier to be dissolved and stripped, thus achieving a more thorough flushing effect.

[0133] In practical applications, the temperature of the warm water can be set within a general warm water range, such as 30°C, 40°C, 50°C, or even a higher 60°C. The specific temperature is determined according to the heat resistance of the filter element material and the design requirements of the water purification system. If the temperature is too low, the flushing effect is limited and it is difficult to effectively remove the attached dirt. If the temperature is too high, it may cause damage or premature aging to some filter element materials. Therefore, it is necessary to reasonably control the temperature range to balance the flushing effect and the durability of the filter element.

[0134] In addition, using hot water for flushing can also play a certain role in sterilization and disinfection. When the water temperature reaches a certain threshold (for example, 55°C to 70°C), it can effectively inhibit and kill bacteria and microorganisms on the surface of the filter element, reducing the risk of secondary pollution, thereby ensuring the hygienic safety and water quality stability of the water purification system. This disinfection function is particularly applicable to occasions with high requirements for water quality hygiene, such as domestic drinking water, medical or food processing water, etc.

[0135] It should be noted that the number of valves of the circulation valve 521, the refrigeration valve 522, the disinfection valve 523, the filter element valve 524, the first waterway valve 530, and the second waterway valve 540 can be set to one, two, or more according to the specific system design requirements. The specific number and arrangement method can be flexibly adjusted according to the structure of the heat exchange element 410, the complexity of the pipeline, and the flow rate requirements to achieve more accurate flow path switching and more efficient heat exchange effect. The valves are preferably solenoid valves with fast response speed and good sealing performance, and are combined with the control module to achieve automatic control, further improving the intelligent level and operating efficiency of the system.

[0136] In summary, through the reasonable combination and interlocking control of the above-mentioned circulation valve 521, refrigeration valve 522, disinfection valve 523, filter element valve 524, first waterway valve 530, second waterway valve 540, and the inlet valve 511, wastewater valve 512, purified water valve 513, and cold water valve 514, the flexible switching between the two modes of the heat exchange water source in the heat exchange element 410, namely one-way flow cooling and closed-loop circulation transportation, is realized. And by supplementing wastewater and tap water, the water volume and temperature of the circulating water source are ensured to be stable, effectively improving the heat exchange efficiency, system energy saving, and operation safety, and significantly enhancing the overall performance of the water treatment equipment and the user experience.

[0137] In a preferred embodiment, step S4 further includes the following steps: When it is necessary to drive the mixed water source, including the third water source (which can be tap water) input from the water inlet 110 but not including the first water source, to enter the heat exchange element 410 for heat exchange; Close: the first waterway valve 530; Open: the inlet valve 511; At this time, only the purified water is mixed with the tap water, or the third water source of tap water enters the heat exchange element 410 through the third input waterway for heat exchange.

[0138] It is possible to avoid wastewater pollution of the heat exchange water source, prevent wastewater from flowing into the heat exchange component, and prevent wastewater from polluting the heat exchange water source.

[0139] Of course, in some embodiments, to ensure that air or gas generated due to water source consumption, temperature change, or gas accumulation in the cold storage part 320 and the heat exchange container 422 can be effectively discharged, an exhaust device may also be provided in the water treatment device 10.

[0140] It can be connected to the exhaust ports of the cold storage part 320 and the heat exchange container 422 through an exhaust pipe, and the gas can be discharged into the external environment through a set exhaust valve or an automatic exhaust device to ensure that the gas in the water body does not accumulate and avoid affecting the normal operation of the system.

[0141] The specific implementation method may include arranging exhaust pipes in the cold storage part 320 and the heat exchange container 422, and equipping the exhaust pipes with exhaust valves or exhaust holes along the way. The valves can be automatic exhaust valves controlled electrically, pneumatically, or manually to automatically open the exhaust according to the gas accumulation situation. The exhaust pipes can be reasonably arranged to ensure that the exhaust ports are far away from heat sources and easily polluted areas to avoid gas reflux or introduction of pollution. As the water source is continuously used and the temperature changes, air or dissolved gas in the cold storage part 320 and the heat exchange container 422 will gradually accumulate, affecting the stability of water flow and heat transfer efficiency. By arranging exhaust pipes to lead these gases out of the system, the concentration of gas in the water body can be effectively reduced, the formation of bubbles can be reduced, water flow blockage and noise can be avoided, and the operation stability and heat exchange efficiency of the system can be improved.

[0142] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0143] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0144] In the embodiments of the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0145] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements 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 the present application.

Claims

1. A water treatment device, characterized in that, Comprising: A waterway structure having a water inlet, a wastewater outlet, and a water outlet; A filter element assembly having a water inlet end, a purified water end, and a wastewater end, wherein the wastewater end is connected to the wastewater outlet, and the purified water end is connected to the water outlet; A temperature regulating device including a heat exchange member and a heat exchange assembly, and a heat dissipation end of the heat exchange member is thermally coupled to the heat exchange assembly; A heat exchange waterway including an input waterway and an output waterway, an input end of the heat exchange member is respectively connected to at least one of the wastewater end, the purified water end, and the water inlet through a plurality of the input waterways, and an output end of the heat exchange member is respectively connected to at least one of the wastewater outlet, the heat exchange assembly, and the water inlet end through a plurality of the output waterways; And A liquid path control device connected to the heat exchange waterway, and the liquid path control device is used to switch the communication between the heat exchange member and a plurality of the input waterways and the output waterways.

2. The water treatment device according to claim 1, wherein The input waterway includes a first input waterway, an input end of the first input waterway is connected to the wastewater end, an output end of the first input waterway is respectively connected to an input end of the heat exchange member and the wastewater outlet, and the liquid path control device includes a first waterway valve provided on the first input waterway, and the first waterway valve is used to control the on-off between the heat exchange member and the wastewater end; And / or the input waterway includes a second input waterway, an input end of the second input waterway is connected to the purified water end, an output end of the second input waterway is respectively connected to an input end of the heat exchange member and the water outlet, and the liquid path control device includes a second waterway valve provided on the second input waterway, and the second waterway valve is used to control the on-off between the heat exchange member and the purified water end; And / or the input waterway includes a third input waterway, and the third input waterway is respectively connected to the water inlet and the heat exchange member.

3. The water treatment device according to claim 1, characterized in that, The heat exchange assembly includes a circulation pump, and the circulation pump is communicated with the heat exchange member to form a loop.

4. The water treatment device according to claim 3, wherein, The heat exchange assembly further includes a heat exchange container, and the heat exchange container is respectively connected to the circulation pump and the heat exchange member to form a loop.

5. The water treatment device according to claim 4, characterized in that, The heat exchange assembly further includes a hot water tank, and the heat exchange member is thermally coupled to the hot water tank and is used to heat the hot water tank.

6. The water treatment device according to any one of claims 1-5, characterized in that, The water treatment device further includes a water storage tank, the water storage tank is respectively connected to the purified water end and the water outlet, and a cold end of the heat exchange member is thermally coupled to the water storage tank.

7. The water treatment device according to claim 6, characterized in that, The water storage tank includes a refrigeration part and a cold storage part, the refrigeration part is communicated with the cold storage part, and the refrigeration part is thermally coupled to the cold end of the heat exchange member.

8. The water treatment device according to claim 7, characterized in that, The water storage tank further includes a first cold water pump, and the first cold water pump is respectively communicated with the refrigeration part and the cold storage part; And / or, the water storage tank further includes a second cold water pump, and the second cold water pump is connected to the cold storage part and is used to pump out cold water outward.

9. A waterway control method for a water treatment device, characterized in that, Applied to the water treatment device according to any one of claims 1-8, comprising the following steps: Step S1, the liquid path control device switches the communication between the heat exchange member and multiple water source waterways among the water source output from the wastewater end, the water source output from the purified water end, and the water source input from the water inlet; Step S2. When the liquid path control device controls the first water source including the output from the wastewater end to input into the heat exchanger, execute at least one of the following control modes: Mode A1: Drive the first water source to circulate in the temperature control device; Mode A2: Drive the first water source to be discharged through the wastewater outlet; Step S3. When the liquid path control device controls only the second water source output from the purified water end to input into the heat exchanger, execute at least one of the following control modes: Mode B1: Drive the second water source to circulate in the temperature control device; Mode B2: Drive the second water source to be discharged through the wastewater outlet; Step S4. When the liquid path control device controls the third water source including the output from the water inlet to input into the heat exchanger, execute at least one of the following control modes: Mode C1: Drive the third water source to circulate in the temperature control device; Mode C2: Drive the third water source to be discharged through the wastewater outlet; Mode C3: Drive the third water source to be conveyed to the filter element assembly.

10. The water path control method of the water treatment equipment according to claim 9, characterized in that, In the step of "When the liquid path control device controls the third water source including the output from the water inlet to input into the heat exchanger and execute at least one of the following control modes", the following steps are further included: When the liquid path control device controls the third water source including the output from the water inlet and does not include the first water source, execute at least one of the following control modes: Mode C1: Drive the third water source to circulate in the temperature control device; Mode C2: Drive the third water source to be discharged through the wastewater outlet; Mode C3: Drive the third water source to be conveyed to the filter element assembly.

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