Water treatment apparatus

Abstract

The application relates to the technical field of water treatment equipment, and relates to a water treatment equipment which comprises a heat exchange assembly and a heating assembly; the heating assembly comprises a heating piece, a circulating pump and a one-way valve, the heating piece is connected to the heat exchange assembly through a first water channel and a second water channel and forms a circulating water channel; the circulating pump is arranged on the first water channel, the one-way valve is arranged on the first water channel, and the one-way valve is located between the heating piece and the circulating pump, and the flow direction of the one-way valve is from the heating piece to the circulating pump. In the water treatment equipment, the one-way valve is arranged on the first water channel, the one-way valve is arranged between the heating piece and the circulating pump, and the flow direction of the one-way valve is limited to be from the heating piece to the circulating pump, so that the circulating water channel can still retain part of the heat exchange medium in the pipe section between the heating piece and the circulating pump after the circulating pump is closed. The structure can effectively avoid hardening or cracking of the membrane in the circulating pump due to long-term exposure to a dry environment, so that the elasticity and sealing performance of the membrane are maintained.

Description

Technical Field

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

[0002] Existing water treatment equipment, such as direct drinking water machines and instant hot water dispensers, is usually equipped with heat exchange components to improve heating efficiency. These devices typically heat the heat exchange medium through a heating element, which then transfers the heat to the water flowing through its internal channels, thereby achieving rapid heating of the outlet water.

[0003] However, in actual operation, when the equipment is in standby mode or under conditions where heat exchange is not required, the water flow in the circulating water circuit may stop, causing the inside of the circulating pump, especially the diaphragm, to remain dry for an extended period. Since the diaphragm is mostly made of elastic material, prolonged dryness can easily lead to material hardening, cracking, or even failure, thereby affecting the sealing performance and driving capability of the circulating pump. In severe cases, it can cause the pump to fail to start normally or operate abnormally, reducing the overall reliability and service life of the machine. Utility Model Content

[0004] In view of this, this application provides a water treatment device to solve the problem that the diaphragm of the water pump used to transport hot water in existing water treatment devices is prone to drying out, which affects the normal operation of the device.

[0005] The first aspect of this application provides a water treatment device, comprising: Heat exchange components are used to heat water sources and output heated water; and The heating assembly includes a heating element, a circulating pump, and a one-way valve. The heating element is connected to the heat exchange assembly through a first water path and a second water path to form a circulating water path. The heating element is used to transport the heat exchange medium along the circulating water path and is thermally coupled to the heat exchange assembly. The circulating pump is located on the first water path, and the one-way valve is located on the first water path. The one-way valve is located between the heating element and the circulating pump, and the flow direction of the one-way valve is from the heating element to the circulating pump.

[0006] In one possible implementation, the heat exchange assembly is provided with a circulation channel and a heating channel, the circulation channel being connected to the first water path and the second water path respectively to form the circulation water path, and the heating channel being used to transport the water source.

[0007] In one possible implementation, the heat exchange assembly includes a heat exchanger and an instant heating element, the circulating flow channel and the heating flow channel are disposed within the heat exchanger, and the heating element is thermally coupled to the heat exchanger through the heat exchange medium, the instant heating element is connected to the heating flow channel, and the instant heating element is used to heat and output the water source output from the heating flow channel.

[0008] In one possible implementation, the water treatment device further includes a water circuit structure having an inlet water circuit and a return water circuit. The inlet water circuit is connected to the heat exchange component and is used to input the water source. The return water circuit is connected to both the inlet water circuit and the heat exchange component, and is used to input at least a portion of the water source output by the heat exchange component into the inlet water circuit.

[0009] In one possible implementation, the water circuit structure further includes an output water circuit, and the water treatment equipment further includes a water outlet component, wherein the output water circuit is connected to the heat exchange component and the water outlet component respectively.

[0010] In one possible implementation, the water outlet includes a faucet and a temperature sensor, the faucet being connected to the output water path, the temperature sensor being connected to the water path structure, and the temperature sensor being used to acquire the temperature signal of the output water path.

[0011] In one possible implementation, the water circuit structure further includes an inlet valve disposed on the inlet water circuit; and / or, the water circuit structure further includes a return valve disposed on the return water circuit.

[0012] In one possible implementation, the heating element includes a hot tank and a heater, the hot tank being connected to the first water passage and the second water passage respectively, and the hot tank being used to contain the heat exchange medium, the heater being thermally coupled to the hot tank, and the heater being used to heat the heat exchange medium.

[0013] In one possible implementation, the water inlet is connected to the hot tank.

[0014] In one possible implementation, the heating assembly further includes a water supply valve located between the water inlet and the heating tank.

[0015] Implementing the embodiments of this application has the following beneficial effects: In the water treatment equipment of this embodiment, by installing a one-way valve in the first water line and arranging the one-way valve between the heating element and the circulating pump, and limiting its flow direction to from the heating element to the circulating pump, a portion of the heat exchange medium can still be retained in the pipe section between the heating element and the circulating pump after the circulating pump is shut down. This structure can effectively prevent the diaphragm inside the circulating pump from hardening or cracking due to long-term exposure to a dry environment, thereby maintaining the elasticity and sealing performance of the diaphragm.

[0016] In the water treatment equipment of this embodiment, when the circulating pump starts, the heat exchange medium immediately flows through the diaphragm area, achieving instant wetting. When the circulating pump stops running, the check valve prevents the heat exchange medium from flowing back to the heating element side, allowing the heat exchange medium located between the check valve and the circulating pump in the first water path to remain and continuously wet the diaphragm. Therefore, the circulating pump can maintain good operating condition during multiple start-ups and shutdowns, improving the reliability and service life of the circulating pump.

[0017] The water treatment equipment in this embodiment improves upon the problem of sealing failure or abnormal drive caused by the drying of the circulating pump diaphragm in the prior art through the above-mentioned circulating water circuit structure design, so as to ensure that the circulating pump can operate stably for a long time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the water circuit of the water treatment equipment in an embodiment of this utility model is shown; Figure 2 A perspective view of the water treatment equipment in an embodiment of this utility model is shown; Figure 3 A schematic diagram of the internal structure of the water treatment equipment in an embodiment of this utility model is shown; Figure 4 A partial structural schematic diagram of the water treatment equipment in an embodiment of this utility model is shown.

[0020] Figure label: 10. Water treatment equipment; 100. Heat exchange assembly; 110. Heat exchanger; 111. Circulation channel; 112. Heating channel; 120. Instantaneous heating element; 200. Heating assembly; 210. Heating element; 211. First water channel; 212. Second water channel; 213. Hot water tank; 214. Heater; 220. Circulation pump; 230. Check valve; 240. Water supply valve; 300. Waterway structure; 310. Inlet waterway; 311. Inlet valve; 320. Return waterway; 321. Return valve; 330. Outlet waterway; 400. Water outlet component; 410. Faucet; 420. Temperature sensor; 500. Shell. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Existing water treatment equipment, such as direct drinking water machines and instant hot water dispensers, is usually equipped with heat exchange components to improve heating efficiency. These devices typically heat the heat exchange medium through a heating element, which then transfers the heat to the water flowing through its internal channels, thereby achieving rapid heating of the outlet water.

[0023] However, in actual operation, when the equipment is in standby mode or under conditions where heat exchange is not required, the water flow in the circulating water circuit may stop, causing the inside of the circulating pump, especially the diaphragm, to remain dry for an extended period. Since the diaphragm is mostly made of elastic material, prolonged dryness can easily lead to material hardening, cracking, or even failure, thereby affecting the sealing performance and driving capability of the circulating pump. In severe cases, it can cause the pump to fail to start normally or operate abnormally, reducing the overall reliability and service life of the machine.

[0024] Based on this, see Figures 1 to 4 As shown, this utility model embodiment provides a water treatment device 10, which includes a heat exchange component 100 and a heating component 200. The heat exchange component 100 is used to heat the water source and output the heated water source. The heating component 200 includes a heating element 210, a circulating pump 220 and a one-way valve 230. The heating element 210 is connected to the heat exchange component 100 through a first water path 211 and a second water path 212 to form a circulating water path. The heating element 210 is used to transport the heat exchange medium along the circulating water path and is thermally coupled to the heat exchange component 100. The circulating pump 220 is disposed on the first water path 211, and the one-way valve 230 is disposed on the first water path 211. The one-way valve 230 is located between the heating element 210 and the circulating pump 220, and the flow direction of the one-way valve 230 is from the heating element 210 to the circulating pump 220.

[0025] In the water treatment device 10 of this embodiment, a one-way valve 230 is installed on the first water passage 211 and positioned between the heating element 210 and the circulating pump 220, limiting its flow direction to from the heating element 210 to the circulating pump 220. This ensures that even after the circulating pump 220 is shut off, a portion of the heat exchange medium remains in the pipe section between the heating element 210 and the circulating pump 220. This structure effectively prevents the diaphragm inside the circulating pump 220 from hardening or cracking due to long-term exposure to a dry environment, thereby maintaining the diaphragm's elasticity and sealing performance.

[0026] In the water treatment device 10 of this embodiment, when the circulating pump 220 starts, the heat exchange medium immediately flows through the diaphragm area, achieving instant wetting. When the circulating pump 220 stops running, the one-way valve 230 prevents the heat exchange medium from flowing back to the heating element 210 side, allowing the heat exchange medium located between the one-way valve 230 and the circulating pump 220 in the first water path 211 to remain and continuously wet the diaphragm. Therefore, the circulating pump 220 can maintain good working condition during multiple start-ups and shutdowns, improving the reliability and service life of the circulating pump 220.

[0027] The water treatment equipment 10 in this embodiment improves the problem of sealing failure or abnormal drive caused by the drying of the diaphragm of the circulating pump 220 in the prior art through the design of the circulating water circuit structure 300, so as to ensure that the circulating pump 220 can operate stably for a long time.

[0028] Specifically, the first water path 211 can be the output water path of the heating element 210, used to export the hot water heated by the heating element 210 for subsequent use or circulation; the second water path 212 can be the input water path of the heating element 210, used to introduce the heat exchange medium output by the heat exchange assembly 100 into the heating element 210 for heat exchange. By setting the first water path 211 and the second water path 212 as the output and input ends of the heating element 210 respectively, a clear water flow direction can be formed, which is beneficial to improving heat exchange efficiency and avoiding water flow turbulence or local overheating. In a specific embodiment, the first water path 211 and the second water path 212 can be connected to the heating element 210 through pipes, joints, or integrated flow channels, respectively. The connection method can be threaded connection, snap-fit ​​connection, or welding, etc., and the specific method is selected according to the system sealing requirements and ease of disassembly and assembly.

[0029] Furthermore, the one-way valve 230 can be installed close to the inlet of the circulating pump 220 to minimize the pipe length in the area at risk of drying out. Simultaneously, the section of the first water path 211 between the one-way valve 230 and the circulating pump 220 can be designed with a slightly downward sloping direction, utilizing gravity to allow the heat exchange medium to naturally accumulate near the inlet of the circulating pump 220, further enhancing the liquid retention effect. In addition, the circulating pump 220 can be a diaphragm pump, gear pump, or centrifugal pump, among which the diaphragm pump is more suitable for this structure due to its strong self-priming capability and low requirements for media cleanliness. Specifically, the number of circulating pumps 220 can be one, two, or more, without a specific limitation. When multiple circulating pumps 220 are installed, corresponding one-way valves 230 can be configured for each pump to achieve independent liquid retention, improving system redundancy and operational stability.

[0030] In one embodiment, the heat exchange assembly 100 is provided with a circulation channel 111 and a heating channel 112. The circulation channel 111 is connected to the first water path 211 and the second water path 212 to form a circulating water path, and the heating channel 112 is used to transport water. The circulation channel 111 forms a closed loop, with its inlet end connected to the first water path 211 and its outlet end connected to the second water path 212, so that the heat exchange medium can continuously circulate between the heating assembly 200 and the heat exchange assembly 100. The heating channel 112 is independently disposed inside the heat exchange assembly 100 and is used to guide the water to be heated through the heat exchange area, thereby realizing heat transfer. The circulation channel 111 and the heating channel 112 can be arranged adjacent to each other in space to improve heat conduction efficiency, but they are completely isolated in the fluid path.

[0031] In this embodiment, the heating component 200 heats the heat exchange medium and delivers it to the circulating water path, whereby the heat exchange medium can exchange heat with the heat exchange component 100. The heat exchange component 100 then transfers the heat to the water source in the heating channel 112 to heat the water source. Specifically, the heating component 200 may include an electric heater, a gas burner, or other heat source device. The heated heat exchange medium (e.g., heat transfer oil, water, or ethylene glycol solution) flows into the circulating channel 111 via the first water path 211. During its flow through the heat exchange component 100, it releases heat to the shell or internal heat-conducting structure of the heat exchange component 100, and then returns to the heating component 200 via the second water path 212 for reheating, forming a stable heat cycle. At the same time, the water source in the heating channel 112 absorbs the heat obtained by the heat exchange component 100 through heat conduction when it flows through the heat exchange component 100, thereby achieving indirect heating of the water source, avoiding direct contact between the heat source and the water source, and improving safety and water quality.

[0032] Specifically, the circulating channel 111 and the heating channel 112 are not interconnected to avoid contamination of the water source by the heat exchange medium. This isolation structure can be achieved through physical separation, for example, by setting an independent dual-channel structure inside the heat exchange assembly 100, wherein the circulating channel 111 and the heating channel 112 are each composed of different pipes or chambers, and are thermally coupled to each other through a metal wall or other thermally conductive material, but without any fluid communication channels. This design ensures that even in the event of long-term operation or seal failure, the heat exchange medium will not seep into the heating channel 112, thereby effectively preventing water source contamination. In addition, this isolation structure also facilitates pressure control and flow regulation of the two fluids separately, improving the stability and controllability of system operation. For example, the circulating channel 111 can maintain a higher pressure to improve heat exchange efficiency, while the heating channel 112 can adjust the flow rate according to water demand, and the two do not interfere with each other.

[0033] Specifically, the heat exchange assembly 100 includes a heat exchanger 110 and an instant heating element 120. The circulation channel 111 and the heating channel 112 are disposed in the heat exchanger 110, and the heating element 210 is thermally coupled to the heat exchanger 110 through the heat exchange medium. The instant heating element 120 is connected to the heating channel 112, and the instant heating element 120 is used to heat and output the water source output from the heating channel 112.

[0034] In this embodiment, the heat exchanger 110 can be a plate heat exchanger, which has a compact structure, which is conducive to achieving high heat exchange efficiency in a limited space, and is also easy to maintain and clean. The plate heat exchanger 110 is composed of multiple layers of stacked metal plates, with alternating circulation channels 111 and heating channels 112 between adjacent plates, so that the heat exchange medium and the water source to be heated can exchange heat efficiently without mixing.

[0035] The instant heating element 120 can be a thick-film heating tube with an internal electrothermal film layer. It heats up rapidly upon energization, instantly heating the flowing water. Thick-film heating tubes offer advantages such as fast thermal response, high thermal efficiency, and small size, making them suitable for precise secondary heating of water. In this embodiment, the heat exchanger 110 exchanges heat with the heating element 210 in the heating assembly 200, using a heat exchange medium to transfer heat to the water source in the heating channel 112, initially heating the water. Subsequently, the initially heated water flows into the instant heating element 120, where it undergoes secondary heating before being output. This two-stage heating structure reduces the instantaneous heating load of the instant heating element 120, preventing excessive energy consumption or uneven heating due to large temperature differences. Furthermore, by preheating the water source through the heat exchanger 110, the overall system's thermal efficiency is improved.

[0036] Through the above structural design, the water treatment equipment 10 can achieve the function of supplying hot water at a large flow rate. Specifically, the heat exchanger 110 undertakes the main heat transfer task and is suitable for continuous and stable heat exchange processes, while the instant heating element 120 is responsible for rapidly heating the preheated water flow to ensure a stable outlet water temperature that meets user needs. The combination of the two allows the system to support higher water flow rates while ensuring the outlet water temperature, making it suitable for usage scenarios with high hot water flow requirements, such as commercial bathing and kitchen hot water supply. In addition, since the instant heating element 120 only needs to slightly heat the preheated water flow, its power requirement is relatively low, which helps to reduce the overall energy consumption and extend the service life of the unit.

[0037] In one embodiment, the water treatment device 10 further includes a water channel structure 300, which has an inlet water channel 310 and a return water channel 320. The inlet water channel 310 is connected to the heat exchange component 100 and is used to input water source. The return water channel 320 is connected to the inlet water channel 310 and the heat exchange component 100 respectively, and the return water channel 320 is used to input at least a portion of the water source output by the heat exchange component 100 into the inlet water channel 310.

[0038] With this structure, after the heat exchange component 100 completes a heating or heat exchange process, the unused hot or warm water can be reintroduced into the inlet water path 310 through the return water path 320, so that it can mix with the newly introduced cold water in the next water inlet process, thereby achieving partial heat recovery, reducing overall energy consumption, and improving thermal energy utilization efficiency.

[0039] Specifically, the water channel structure 300 can be a water channel board, which has multiple built-in water channels to connect various components. The water channel board can be manufactured using a one-piece molding process, such as injection molding, die casting, or machining to form the internal flow channels. The material can be engineering plastics or metals that are high-temperature resistant, corrosion-resistant, and have good sealing performance. Using a water channel board structure helps reduce the number of external connection pipes, improves the overall integration of the machine, and reduces the risk of leakage caused by too many interfaces.

[0040] In some embodiments, the water system structure 300 may also be a combination of multiple pipes, such as an inlet pipe, a return pipe, connecting joints, and seals. The pipes can be made of flexible or rigid materials, such as silicone tubing, fluororubber tubing, or copper tubing, selected according to the specific installation space and fluid characteristics. This combined structure facilitates modular assembly and subsequent maintenance, and is particularly suitable for water treatment equipment 10 with complex structures or requiring frequent disassembly. No single limitation is made herein.

[0041] The return water path 320 can return the water in the instant heating element 120 to the inlet water path 310 after heating is finished, thus achieving the effect of reusing heat. Specifically, if the hot water remaining inside the instant heating element 120 is directly drained after heating stops, it will result in a waste of heat energy. By guiding this part of the hot water back to the inlet water path 310 through the return water path 320, it can be mixed with the new water source during the next water intake, increasing the initial temperature of the incoming water, thereby reducing the heating load and heating time of the instant heating element 120, which helps to save energy and extend the service life of the instant heating element 120.

[0042] In some embodiments, the internal venting function of the heat exchange component 100 can also be achieved by driving the water source through the return water path 320. For example, during the initial startup of the equipment or after a long period of shutdown, air may accumulate inside the heat exchange component 100, affecting the stability of the water flow and the heat exchange efficiency. At this time, the water flow can be reversed or circulated along the return water path 320 by briefly starting the control valve or water pump, which will drive the air bubbles to a higher point or the vent, thereby expelling the internal gas and ensuring that the heat exchange component 100 is filled with liquid, maintaining stable heat transfer performance and water flow pressure. This venting process can be carried out in conjunction with normal return operation without the need for an additional independent venting structure, simplifying the system design.

[0043] Specifically, the water circuit structure 300 also includes an output water circuit 330, and the water treatment equipment 10 also includes a water outlet 400. The output water circuit 330 is connected to the heat exchange component 100 and the water outlet 400 respectively, thereby realizing the output of hot water. In practical applications, the output water circuit 330 can be made of high-temperature resistant and corrosion-resistant pipes, such as stainless steel pipes, copper pipes, or engineering plastic pipes, to ensure that it can maintain structural stability and sealing performance under long-term high-temperature water flow.

[0044] In use, after the heat exchange component 100 heats the water source, the heated water is transported along the output water path 330 and output through the water outlet 400. Since the output water path 330 directly connects the water outlet of the heat exchange component 100 and the water outlet 400, the water flow path is simple, reducing heat loss during transmission and helping to improve the overall thermal efficiency of the machine.

[0045] In one embodiment, the water outlet component 400 includes a faucet 410 and a temperature sensor 420. The faucet 410 is connected to the water output path 330, and the temperature sensor 420 is connected to the water path structure 300. The temperature sensor 420 is used to acquire the temperature signal of the water output path 330.

[0046] In this embodiment, the faucet 410 can control the water output. Specifically, the faucet 410 can take the form of a manual knob, a push-button type, or an electrically controlled valve, etc., controlling the on / off state and flow rate of water by adjusting the opening of the internal valve core. For example, when the faucet 410 is an electrically controlled valve, it can receive external control signals to automatically adjust the water flow state, making it suitable for intelligent water control systems; when a manual knob type is used, it is convenient for users to operate intuitively, with a simple structure and high reliability. The above-mentioned different forms of faucet 410 can be selected according to the actual usage scenario and cost requirements, and are not limited to one type.

[0047] Temperature sensor 420 acquires the temperature of the output water source to provide a temperature signal, thereby controlling the water source temperature. Specifically, temperature sensor 420 can be a thermistor, thermocouple, or digital temperature sensor, etc. Its sensing end can directly contact the water flow in the output water path 330 or be installed close to the pipe wall of the output water path 330 to detect water temperature changes in real time. The temperature signal acquired by temperature sensor 420 can be transmitted to the control system. The control system adjusts the working state of the heating device or mixing valve according to the preset temperature threshold, thereby achieving dynamic control of the outlet water temperature. For example, when the detected water temperature is higher than the set upper limit, the control system can reduce the heating power or increase the proportion of cold water; when the water temperature is lower than the set lower limit, it can correspondingly increase the heating power or decrease the proportion of cold water to ensure that the outlet water temperature is maintained within the range required by the user.

[0048] Furthermore, the temperature sensor 420 can be installed upstream, midway, or near the outlet of the faucet 410 in the output water path 330. The specific installation location can be determined based on the requirements for temperature response speed and measurement accuracy. Installation near the faucet 410 outlet provides a more accurate reflection of the actual water temperature encountered by the user; installation upstream allows for early prediction of water temperature changes, facilitating system adjustments in advance. It should be noted that the temperature sensor 420 can be connected to the water path structure 300 via threaded connection, snap-fit ​​connection, or embedded sealed installation, ensuring good waterproofing and structural stability during long-term use.

[0049] By integrating the faucet 410 and temperature sensor 420 into the water outlet component 400 and connecting them to the output water path 330 and water path structure 300 respectively, the water flow control and temperature monitoring functions are structurally integrated, which not only saves installation space but also improves the real-time performance and control accuracy of temperature feedback, thus helping to achieve a more stable and safer water outlet experience.

[0050] Specifically, the water circuit structure 300 also includes an inlet valve 311, which is located on the inlet water circuit 310. The inlet valve 311 is used to control whether external water enters the water treatment equipment 10, and can be a solenoid valve, ball valve, or shut-off valve. When the inlet valve 311 is a solenoid valve, it can be automatically opened and closed through the control system, which is convenient for linkage with the overall operating logic of the machine. When a manual ball valve or shut-off valve is used, it is suitable for cost-sensitive applications or applications that do not require frequent opening and closing. By setting the inlet valve 311, the water supply can be cut off during equipment maintenance, shutdown, or abnormal conditions, preventing overflow, abnormal pressure, or component damage caused by continuous water intake inside the water treatment equipment 10, thereby improving the safety and controllability of equipment operation.

[0051] A return valve 321 is installed on the return water path 320 to control whether the water heated by the instant heating element 120 flows back to the front water path or water storage structure of the water treatment equipment 10. The return valve 321 can also be a solenoid valve, a check valve, or a manual regulating valve. When a check valve is used, it can automatically prevent backflow based on fluid pressure difference, with a simple structure and no external control required. When a solenoid valve is used, it can actively control the opening and closing of the return path according to temperature detection or flow demand, achieving dynamic adjustment of water temperature. By setting the return valve 321, when the output water temperature of the instant heating element 120 does not reach the set value, the water can be guided back to the front end for reheating, avoiding direct output of low-temperature water that affects the user experience. Simultaneously, in the system shutdown or standby state, the return valve 321 can block the return path, preventing hot water backflow that could cause pipe heat loss or component aging. Furthermore, the return valve 321 can be used in conjunction with the inlet valve 311 to form an internal circulation preheating during the initial startup of the equipment, shortening the waiting time for hot water.

[0052] It should be noted that the inlet valve 311 and the return valve 321 can be set individually or simultaneously, depending on the functional requirements, control logic, and cost structure of the water treatment equipment 10. No single limitation is made here. When both are set simultaneously, the water circuit structure 300 has a stronger ability to regulate the water flow path, which is beneficial for achieving precise water temperature control and system protection under multiple operating conditions.

[0053] Specifically, the heating element 210 includes a heat tank 213 and a heater 214. The heat tank 213 is connected to the first water passage 211 and the second water passage 212 respectively, and the heat tank 213 is used to contain the heat exchange medium. The heater 214 is thermally coupled to the heat tank 213 and is used to heat the heat exchange medium.

[0054] In this embodiment, the heater 214 is thermally coupled to the heat tank 213, and can take the form of an electric heating tube, a PTC ceramic heating element, or an electromagnetic induction heating structure. Specifically, the heater 214 can be embedded inside the tank wall of the heat tank 213, or tightly attached to the outer wall of the heat tank 213 by means of thermally conductive silicone grease, metal jacket, etc., to achieve efficient heat conduction. When an electric heating tube is used, it can be directly immersed in the heat exchange medium to achieve rapid and uniform heating; when a PTC ceramic heating element is used, it has self-limiting temperature characteristics, which helps to improve the safety and energy efficiency of the system.

[0055] The first water path 211 and the second water path 212 are respectively connected to the heat exchange tank 213, forming a circulation path for the heat exchange medium. The first water path 211 is used to introduce the low-temperature heat exchange medium into the heat exchange tank 213, and the second water path 212 is used to transport the heated heat exchange medium to the heat exchange assembly 100. In practical applications, the first water path 211 and the second water path 212 can be connected to a circulation pump, valve, or flow regulating device to control the flow rate and velocity of the heat exchange medium, thereby adjusting the heat exchange efficiency. A flow guiding structure or baffle can be installed inside the heat exchange tank 213 to guide the flow path of the heat exchange medium, reduce dead zones, and improve heating uniformity. In addition, the heat exchange tank 213 can also integrate a temperature sensor or liquid level detection device to monitor the internal medium status in real time, provide feedback signals to the control system, and achieve precise control of the heater 214 to avoid the risk of dry burning or overheating. Through the above structural design, the heating element 210 can stably and efficiently provide the required heat energy to the heat exchange assembly 100, ensuring the reliable operation of the entire heat exchange system.

[0056] In one embodiment, the water inlet passage 310 is connected to the hot tank 213.

[0057] This configuration allows for water replenishment to the heating tank 213 via the water inlet channel 310, ensuring a proper liquid level is maintained during continuous heating or use, preventing dry burning or reduced heating efficiency due to water shortage. Simultaneously, since the water inlet channel 310 directly supplies water to the heating tank 213, the heat exchange medium can be directly water, eliminating the need for additional heat transfer oil, ethylene glycol solution, or other types of heat exchange media. This simplifies the overall structural design, reduces manufacturing costs, and minimizes the risk of leakage and maintenance complexity associated with using non-aqueous heat exchange media. Furthermore, the heating assembly 200 also includes a water replenishment valve 240, located between the water inlet channel 310 and the heating tank 213.

[0058] The replenishment of heat exchange medium in the heat tank 213 can be controlled by setting a water supply valve 240. Specifically, the water supply valve 240 can be one of a solenoid valve, a manual shut-off valve, or a float control valve. It automatically or manually opens and closes according to the liquid level in the heat tank 213 or the system operating status to regulate the amount of water entering the heat tank 213. When the heat exchange medium inside the heat tank 213 decreases due to evaporation, leakage, or consumption during system operation, the water supply valve 240 opens, allowing water from the inlet water passage 310 to replenish the heat tank 213, maintaining its normal operating liquid level, thereby ensuring heating efficiency and system stability.

[0059] The opening degree or timing of the water supply valve 240 can be set according to actual needs. For example, in an embodiment using a solenoid valve as the water supply valve 240, automatic water supply control can be achieved by combining the liquid level sensor signal; in an embodiment using a float control valve, the valve opening and closing is automatically adjusted by the float rising and falling with the liquid level, which is simple in structure and does not require an external power supply.

[0060] Specifically, the water treatment equipment 10 also includes a housing 500, which serves as a mounting carrier for installing the heat exchange assembly 100, the heating assembly 200, the water channel structure 300, and the water outlet component 400. The housing 500 provides support and protection for the overall structure and has multiple mounting areas or positions internally, corresponding to the outlines and connection interfaces of the heat exchange assembly 100, the heating assembly 200, the water channel structure 300, and the water outlet component 400, respectively, to ensure that each component is stably fixed within the housing 500 and maintains a predetermined spatial layout. The housing 500 can be made of metal or high-strength engineering plastics, such as stainless steel, aluminum alloy, or polycarbonate, to balance structural strength, corrosion resistance, and ease of processing. The inner wall of the housing 500 may be provided with reinforcing ribs or positioning bosses to improve overall rigidity and assist in the precise assembly of each component. In addition, the housing 500 may have an inlet and an outlet for communicating with the water channel structure 300, as well as a cable routing hole for laying electrical connection cables, thereby achieving a reliable connection between the water treatment equipment 10 and an external water and power source. The housing 500 may also include a removable cover or panel for easy maintenance or replacement of internal components. By integrating the heat exchange component 100, heating component 200, water channel structure 300, and outlet component 400 into the housing 500, not only is the overall compactness of the water treatment equipment 10 improved, but it also helps to reduce external piping connections, lower the risk of leakage, and improve the reliability and safety of equipment operation.

[0061] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0063] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A water treatment device, characterized in that, include: Heat exchange components are used to heat water sources and output heated water. as well as The heating assembly includes a heating element, a circulating pump, and a one-way valve. The heating element is connected to the heat exchange assembly through a first water path and a second water path to form a circulating water path. The heating element is used to transport the heat exchange medium along the circulating water path and is thermally coupled to the heat exchange assembly. The circulating pump is located on the first water path, and the one-way valve is located on the first water path. The one-way valve is located between the heating element and the circulating pump, and the flow direction of the one-way valve is from the heating element to the circulating pump.

2. The water treatment equipment according to claim 1, characterized in that, The heat exchange component is provided with a circulation channel and a heating channel. The circulation channel is connected to the first water path and the second water path respectively to form the circulation water path, and the heating channel is used to transport the water source.

3. The water treatment equipment according to claim 2, characterized in that, The heat exchange assembly includes a heat exchanger and an instant heating element. The circulating flow channel and the heating flow channel are disposed in the heat exchanger, and the heating element is thermally coupled to the heat exchanger through the heat exchange medium. The instant heating element is connected to the heating flow channel and is used to heat and output the water source output from the heating flow channel.

4. The water treatment equipment according to any one of claims 1-3, characterized in that, The water treatment equipment further includes a water circuit structure, which has an inlet water circuit and a return water circuit. The inlet water circuit is connected to the heat exchange component and is used to input the water source. The return water circuit is connected to the inlet water circuit and the heat exchange component, and is used to input at least a portion of the water source output by the heat exchange component into the inlet water circuit.

5. The water treatment equipment according to claim 4, characterized in that, The water circuit structure also includes an output water circuit, and the water treatment equipment also includes a water outlet component. The output water circuit is connected to the heat exchange component and the water outlet component respectively.

6. The water treatment equipment according to claim 5, characterized in that, The water outlet component includes a faucet and a temperature sensor. The faucet is connected to the output water path, and the temperature sensor is connected to the water path structure. The temperature sensor is used to acquire the temperature signal of the output water path.

7. The water treatment equipment according to claim 4, characterized in that, The water circuit structure further includes an inlet valve, which is located on the inlet water circuit; and / or, the water circuit structure further includes a return valve, which is located on the return water circuit.

8. The water treatment equipment according to claim 4, characterized in that, The heating element includes a hot tank and a heater. The hot tank is connected to the first water passage and the second water passage respectively, and the hot tank is used to contain the heat exchange medium. The heater is thermally coupled to the hot tank and is used to heat the heat exchange medium.

9. The water treatment equipment according to claim 8, characterized in that, The water inlet is connected to the hot tank.

10. The water treatment equipment according to claim 9, characterized in that, The heating assembly also includes a water supply valve, which is located between the water inlet and the heating tank.

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