Zero-residual water purifier system

Abstract

The utility model discloses zero residual water purifying water dispenser system belongs to drinking water treatment equipment technical field, and this system includes water source interface, drain, filter, normal temperature water supply line, hot water supply line, drain line and water faucet. The water inlet end of filter is connected with water source interface, and its water outlet end is connected with normal temperature water supply line and hot water supply line to water faucet respectively, and is communicated to drain through third direct valve. The drain line is connected to normal temperature water supply line and hot water supply line near faucet through first and second direct valves respectively, and the water is drained to drain by first water pump. After user stops taking water, the system can automatically start the drain program, and the water remaining in the pipeline is actively drained by pump valve cooperation, thereby effectively avoiding the problem that bacteria breed in static residual water and affect the next drinking water health, providing significant health safety guarantee and improving drinking water quality.

Description

Technical Field

[0001] This utility model relates to the field of drinking water treatment equipment technology, and in particular to a zero-residue water purifier system. Background Technology

[0002] With increasing emphasis on drinking water safety and hygiene, household and commercial water purifiers have become essential equipment for accessing drinking water in many homes, offices, schools, and other public places. These devices typically treat tap water by filtering, heating, or cooling it to provide users with room temperature, hot, or cold water.

[0003] In most common water purifiers, a portion of water typically remains in the water supply pipes connecting the faucet to the internal water tank and filter after each use. This water cannot naturally flow back or drain due to gravity and remains in the pipes for an extended period. Especially during periods of inactivity, such as at night or on weekdays when the machine is unused, this residual water can remain stagnant in the pipes for hours or even days.

[0004] Because the internal environment of pipes is humid and may be exposed to air, water that has been stagnant for a long time can easily become a breeding ground for microorganisms, potentially leading to an increase in the total number of bacteria and even the growth of pathogens. When users draw water again, the water that initially flows out is actually this stagnant "old water," and its sanitary condition may have significantly deteriorated. This poor-quality stagnant water not only affects the safety and taste of drinking that time, but may also contaminate the fresh, clean water that flows out later, posing a potential threat to the user's health.

[0005] Existing solutions to this problem typically focus on cleaning the water tank itself or regularly replacing the filter cartridge, such as using antibacterial materials to manufacture the pipes, installing ultraviolet disinfection modules, or reminding users to flush the tank periodically. However, these methods either fail to completely remove residual water from the complex piping structure or rely on manual operation by the user, resulting in shortcomings in convenience and reliability. Some designs attempt to reduce residue by optimizing the pipe layout, but the effects are limited and cannot fundamentally solve the water accumulation problem caused by siphoning and static pressure.

[0006] Therefore, there is an urgent need for a technical solution that can automatically and thoroughly remove residual water from inside water supply pipelines, fundamentally eliminating the risk of microbial contamination caused by water stagnation, and ensuring that users can obtain fresh and safe drinking water every time they draw water, without relying on cumbersome manual maintenance or passive designs with limitations. Utility Model Content

[0007] This invention overcomes the problem that existing drinking water equipment cannot drain residual water in time, which leads to water quality insecurity. It provides a zero-residual-water purification drinking water system. After the user stops taking water, the system can automatically start the drainage program and actively drain the water remaining in the pipeline using a pump and valve. This effectively avoids the problem of bacteria growing in stagnant residual water and affecting the hygiene of the next drinking water, providing significant hygiene and safety protection and improving drinking water quality.

[0008] To achieve the above objectives, the present invention adopts the following solution: The zero-residue water purifier system includes a water source interface, a drain outlet, a filter, a room temperature water supply pipeline, a hot water supply pipeline, a drain pipeline, and a faucet. The inlet of the filter is connected to the water source interface, and the outlet of the filter is connected to the inlet of the faucet through the room temperature water supply pipeline and the hot water supply pipeline. The outlet of the filter is also connected to the drain outlet through a third direct-acting valve. The inlet of the drain pipeline is connected to the connection between the room temperature water supply pipeline and the faucet through a first direct-acting valve and to the connection between the hot water supply pipeline and the faucet through a second direct-acting valve. The outlet of the drain pipeline is connected to the drain outlet through a first water pump.

[0009] Preferably, the system also includes a chilled water supply pipeline, which includes a chilled water tank equipped with a chiller. The outlet of the chilled water tank is connected to the connection point of the ambient temperature water supply pipeline and the faucet via a second water pump. The inlet of the chilled water tank is connected to the outlet of the filter.

[0010] Preferably, the outlet of the chilled water tank is located at the bottom of the tank, and the outlet of the chilled water tank is connected to the drain pipe through the sixth direct-acting valve.

[0011] Preferably, the system also includes a carbonized water pipeline, which includes a carbonization tank built into the ice water tank. The air inlet of the carbonization tank is connected to a carbon dioxide supply device, and the water inlet of the carbonization tank is connected to the water outlet of the ice water tank via a self-priming pump. The water outlet of the carbonization tank is connected to the connection point of the ambient temperature water supply pipeline and the faucet via a fourth direct-acting valve. The refrigeration pipes of the refrigerator are arranged around the carbonization tank.

[0012] Preferably, the carbon dioxide supply device includes an internal interface and an external interface. The internal interface is connected to the carbon dioxide cylinder built into the system, and the external interface is connected to an external gas supply pipeline. The water source interface includes a tap water interface and a filtered water interface. The tap water interface is connected to the municipal tap water pipeline to the outside and to the inlet of the filter to the inside. The filtered water interface is connected to an external drinking water source to the outside and to a normal temperature water supply pipeline and a hot water supply pipeline to the inside.

[0013] Preferably, the hot water supply pipeline includes a hot water tank and a secondary water tank. The hot water tank is equipped with a heater, and the outlet of the hot water tank is connected to a third water pump. The outlet of the third water pump is divided into two paths, one of which is connected to the inlet of the faucet, and the other is connected to the drain pipeline through a second direct-acting valve. The inlet of the hot water tank is connected to the outlet of the secondary water tank, and the inlet of the secondary water tank is connected to the outlet of the filter.

[0014] Preferably, the bottom of the hot water tank is provided with a hot water direct discharge outlet for draining the water in the tank, and the hot water direct discharge outlet is connected to the drain outlet through a fifth direct-acting valve.

[0015] Preferably, the filter contains, in sequence along the water flow direction, a tap water chamber, a surface filter, a filter layer, and a purified water chamber. The tap water chamber has a filtered water inlet, a flushing water inlet, and a wastewater outlet. The tap water chamber contains a spiral vortex pipe, with the inlet end of the vortex pipe connected to the flushing water inlet and the outlet end of the vortex pipe angled towards the surface of the surface filter. The purified water chamber has a purified water outlet, which is connected to a normal temperature water supply pipeline and a hot water supply pipeline.

[0016] This utility model includes at least the following beneficial effects: (1) By setting up a dedicated drainage pipeline and cooperating with a direct-acting valve and a water pump, the drainage program can be automatically started after each water intake, actively pumping out the water remaining in the room temperature water and hot water supply pipelines, fundamentally and effectively avoiding the problem of bacteria breeding and contaminating subsequent drinking water due to the deterioration of residual water, significantly improving the hygiene and safety of the water output and the level of user health protection; (2) By adding an ice water supply pipeline and the connection design of the water outlet and drainage pipeline at the bottom of the ice water tank, not only is the function of providing low-temperature cold water expanded to meet the diverse drinking water needs of users, but also the residual water in the ice water tank and its pipeline can be effectively discharged, further ensuring the hygiene and safety of the entire system in terms of cold water supply and the freshness of water quality; (3) By introducing the carbonized water preparation function and cleverly using the refrigerator to provide a cold source for the carbonization tank, the system can provide sparkling water, enriching the types of beverages and user experience. The flexible design of dual interfaces (built-in gas cylinder and external gas source) and dual water sources (tap water and filtered water) enhances the adaptability and convenience of the equipment to different usage scenarios and user preferences; (4) The hot water supply adopts a dual-stage structure of hot water tank and auxiliary water tank, and is equipped with an independent bottom direct discharge outlet, which not only ensures a stable and fast supply of hot water, but also enables the thorough and efficient drainage of stagnant water inside the hot water tank, greatly reducing the risk of scale and bacteria growth in the hot water tank area due to long-term water storage, and ensuring the purity and safety of hot water; (5) The filter adopts a multi-chamber series structure and integrates a unique vortex self-washing mechanism, which can efficiently complete water purification, and automatically clean the filter screen surface, effectively slowing down the clogging speed of the filter element, extending its service life, reducing the user's maintenance frequency and cost, and ensuring a long-term stable filtration effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system connection relationship of this utility model; Figure 2 This is a schematic diagram of a system structure arrangement according to the present invention; Figure 3 This is a schematic diagram of a carbonized water pipeline structure according to the present invention; Figure 4 This is a schematic diagram of the internal structure of a filter according to the present invention.

[0018] In the diagram: Filter 1, Faucet 2, First Direct-Action Valve 3, Second Direct-Action Valve 4, Third Direct-Action Valve 5, First Water Pump 6, Ice Water Tank 7, Refrigerator 8, Second Water Pump 9, Sixth Direct-Action Valve 10, Carbonization Tank 11, Self-Priming Pump 12, Fourth Direct-Action Valve 13, Carbon Dioxide Cylinder 14, Hot Water Tank 15, Auxiliary Water Tank 16, Third Water Pump 17, Fifth Direct-Action Valve 18, Tap Water Chamber 101, Surface Filter 102, Filter Layer 103, Clean Water Chamber 104, Swirl Pipe 105. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0020] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0021] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the materials described are commercially available unless otherwise specified. In the description of this utility model, it should be noted that, unless otherwise explicitly stated and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terms "lateral," "longitudinal," "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, and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model.

[0022] like Figure 1As shown, the zero-residue water purifier system provided by this utility model includes a water source interface, a drain outlet, a filter 1, a room temperature water supply pipeline, a hot water supply pipeline, a drain pipeline, and a faucet 2. The inlet end of the filter 1 is connected to the water source interface, and the outlet end of the filter 1 is connected to the inlet end of the faucet 2 through the room temperature water supply pipeline and the hot water supply pipeline. The outlet end of the filter 1 is also connected to the drain outlet through a third direct-acting valve 5. The inlet end of the drain pipeline is connected to the connection between the room temperature water supply pipeline and the faucet 2 through a first direct-acting valve 3 and to the connection between the hot water supply pipeline and the faucet 2 through a second direct-acting valve 4. The outlet end of the drain pipeline is connected to the drain outlet through a first water pump 6.

[0023] The water source interface is used to connect to external water supply sources, such as municipal tap water pipes or external drinking water equipment. Its interface specifications can be adapted to common standard water pipe joints, such as G1 / 2 or G3 / 4 threaded interfaces, to facilitate installation and connection. As the water inlet of the entire system, the water source interface is responsible for introducing raw water into the system.

[0024] Filter 1 is connected to the outlet of the water source interface. It can be equipped with multiple layers of filter media, such as PP cotton, activated carbon, ultrafiltration membrane, etc., to remove impurities, residual chlorine, odors, microorganisms, etc. from the water and improve water quality. The inlet of filter 1 is connected to the water source interface, and the outlet is connected to the ambient temperature water supply pipeline, the hot water supply pipeline and a branch line leading to the drain. If the water source is drinking water, filter 1 does not need to be connected.

[0025] The ambient temperature water supply pipeline is used to transport ambient temperature drinking water after it has been treated by the filter element. Its inlet is connected to the clean water outlet of the filter 1, and its outlet is connected to one of the water inlet channels of the faucet 2. The pipeline can be equipped with the necessary valve control unit, such as a solenoid valve or a direct-acting valve, to control the flow of water.

[0026] The hot water supply pipeline is used to provide heated drinking water. Its structure may include a heating unit such as an electric heating element, an instant heating module or a thermal storage hot water tank. The inlet is also connected to the outlet of filter 1, and the outlet is also connected to faucet 2. The pipeline may also be equipped with auxiliary structures such as temperature sensors and insulation layers to ensure the stability of the outlet water temperature.

[0027] The drainage pipe is located inside the system and is used to collect and discharge various types of residual water or wastewater. Its inlet end is connected to the connection between the ambient temperature water supply pipe and the faucet 2 through the first direct-acting valve 3, and is also connected to the connection between the hot water supply pipe and the faucet 2 through the second direct-acting valve 4. The outlet end of the drainage pipe is connected to the drain outlet through the first water pump 6, thereby realizing active pumping.

[0028] The faucet 2 has a multi-channel water outlet structure, which can output room temperature water, hot water, etc. It is equipped with a water distributor or switching valve inside, so that users can select different water flow temperatures according to their needs.

[0029] In addition, the outlet of filter 1 is directly connected to the drain outlet through the third direct-acting valve 5. This passage can be used for system flushing or draining residual water from the filter element.

[0030] When the user stops drawing water, the system initiates a drainage process: it opens the corresponding direct-acting valves (such as the first direct-acting valve 3 and the second direct-acting valve 4) and the first water pump 6, drawing the water remaining in the ambient temperature water pipes, hot water pipes, and inside the faucet 2 into the drainage pipes, and finally discharging it from the drain outlet, thus ensuring no residual water remains in the pipes. This system effectively prevents bacterial growth and water quality deterioration caused by long-term retention of residual water in drinking water pipes, significantly improving drinking water hygiene and safety. Simultaneously, the active drainage design avoids secondary pollution caused by siphoning or stagnation, making it suitable for various drinking water scenarios such as homes and offices, and possessing high practicality and health protection value.

[0031] In another technical solution, such as Figure 1-3 As shown, the system also includes an ice water supply pipeline, which includes an ice water tank 7. The ice water tank 7 is equipped with a chiller 8. The outlet of the ice water tank 7 is connected to the connection point of the ambient temperature water supply pipeline and the faucet 2 via a second water pump 9. The inlet of the ice water tank 7 is connected to the outlet of the filter 1.

[0032] The zero-residue water purifier system also includes an ice water supply pipeline, which is used to prepare and provide cooled drinking water to meet users' needs for low-temperature drinking water. The core component of the ice water supply pipeline is the ice water tank 7, which is usually made of food-grade stainless steel or high-strength plastic, with good heat insulation performance and corrosion resistance. Its capacity can be selected according to the actual use scenario; for example, common household models can choose a capacity of about 5 liters to 10 liters. The ice water tank 7 is equipped with a cooler 8, which can be implemented using a compressor refrigeration system or a semiconductor refrigeration chip. Compressor refrigeration is more efficient and cools faster, suitable for medium and large capacity models, while semiconductor refrigeration has a simpler structure and lower noise, suitable for small models or noise-sensitive environments. The cooler 8 absorbs heat from the water in the ice water tank 7 through refrigerant circulation or thermoelectric effect, thereby lowering the water temperature and maintaining it within a low temperature range, which can control the water temperature between a set value between 3 degrees Celsius and 10 degrees Celsius.

[0033] The outlet of the chilled water tank 7 is connected to the connection point of the ambient temperature water supply pipeline and the faucet 2 via the second water pump 9. The second water pump 9 is usually a small centrifugal pump or gear pump, and its power and flow rate can be selected according to the delivery distance and the required water output speed. For example, the working voltage can be 12V or 24V DC, and the flow rate ranges from 1 liter to 3 liters per minute. The function of this pump is to start when the user needs chilled water, pumping the cold water in the chilled water tank 7 into the ambient temperature water supply pipeline, and finally outputting it from a specific channel of the faucet 2. The inlet of the chilled water tank 7 is directly connected to the outlet of the filter 1, thereby ensuring that the water entering the chilled water tank 7 is clean water that has been filtered. A control valve, such as a solenoid valve, can be installed on the inlet passage to automatically open or close according to the water level signal in the chilled water tank 7 (such as through a float switch or liquid level sensor detection), so as to realize automatic water replenishment of the chilled water tank 7.

[0034] When the user selects the ice water function via tap 2, the control system activates the second water pump 9 to pump cold water from the ice water tank 7. Simultaneously, the system monitors the water level in the ice water tank 7. When the water level falls below the set lower limit, the valve on the inlet passage is opened to replenish water until the water level reaches the set upper limit, at which point replenishment stops. The chiller 8 operates intermittently or continuously based on feedback signals from the water temperature sensor to maintain a stable water temperature within the tank. By adding the ice water supply function, the system's water output types are enriched, meeting users' needs for different drinking temperatures, improving the practicality and user experience of the water dispenser, and providing refreshing drinking water. Furthermore, residual water in the ice water supply pipeline can be directly discharged through the drain pipeline, ensuring the hygiene and safety of the ice water.

[0035] The outlet of the chilled water tank 7 is located at the bottom of the tank body, and is connected to the drain pipe via the sixth direct-acting valve 10. This bottom-positioning of the outlet facilitates full utilization of the tank's volume and ensures that water is completely drained during pumping, reducing stagnant water zones and preventing water quality deterioration due to prolonged water retention. The connection between the outlet and the tank body can use standard pipe threads or quick-connect fittings for easy sealing and connection to subsequent pipelines. The opening diameter can be designed according to flow requirements; for example, common diameters range from 6 mm to 10 mm.

[0036] The outlet of the chilled water tank 7 is connected to the drain pipe via a sixth direct-acting valve 10. This sixth direct-acting valve 10 serves as the on / off control element and can be either an electromagnetic direct-acting valve or an electric ball valve. It features fast response and good sealing performance, and its operating voltage can be selected from low-voltage specifications such as 12V DC or 24V DC to improve safety. When the valve body receives an opening signal from the control system, the valve opens, allowing water to flow; when a closing signal is issued, the valve closes, cutting off the water flow. The connection to the drain pipe can be achieved using a flexible hose sleeve with a pipe clamp for secure fastening, or a rigid pipe thread connection to ensure reliable connection and sealing.

[0037] In normal chilled water supply mode, the sixth direct-acting valve 10 remains closed, and chilled water is pumped to the faucet 2 via the second water pump 9. When the system enters cleaning, draining, or anti-residue operation mode (e.g., after the user has not used the chilled water function for a long time, the system automatically starts the stale water draining program), the control system can open the sixth direct-acting valve 10 and start the corresponding drain pump (such as the first water pump 6 or other pumps in the system) to force the water at the bottom of the chilled water tank 7 out of the machine through the drain pipe, thereby ensuring that there is no stale water in the tank. By optimizing the outlet position and adding linkage with the drain pipe, the system's ability to remove residual water is further enhanced, significantly reducing the risk of bacterial growth and water quality deterioration in the chilled water tank 7, and improving the safety and freshness of drinking water.

[0038] like Figure 3 As shown, the system also includes a carbonized water pipeline, which includes a carbonization tank 11 built into the ice water tank 7. The air inlet of the carbonization tank 11 is connected to a carbon dioxide supply device. The water inlet of the carbonization tank 11 is connected to the water outlet of the ice water tank 7 through a self-priming pump 12. The water outlet of the carbonization tank 11 is connected to the connection point of the ambient temperature water supply pipeline and the faucet 2 through a fourth direct-acting valve 13. The refrigeration pipes of the refrigerator 8 are arranged around the carbonization tank 11.

[0039] The zero-residue water purifier system also includes a carbonized water pipeline, which is used to prepare and supply sparkling water containing carbon dioxide gas. The core component of the carbonized water pipeline is the carbonization tank 11, which is typically made of high-pressure resistant, food-grade stainless steel. Its internal design incorporates a gas-water mixing structure, such as using spray, swirling, or packing methods, to increase the gas-liquid contact area and improve the dissolution efficiency of carbon dioxide. The capacity of the carbonization tank 11 can be designed according to the frequency of sparkling water demand; common household models offer capacities ranging from approximately 1 liter to 3 liters. The air inlet of the carbonization tank 11 is connected to a carbon dioxide supply device, which provides food-grade carbon dioxide gas. Its output pressure can be adjusted via a pressure reducing valve to a suitable range for carbonization, such as a value between 0.4 MPa and 0.8 MPa, to ensure both effective carbonization and safety.

[0040] The inlet of the carbonation tank 11 is connected to the outlet of the ice water tank 7 via a self-priming pump 12. The self-priming pump 12 has self-priming capability and can draw water from the lower-positioned ice water tank 7. Its power and flow parameters can be matched with the water replenishment volume of the carbonation tank 11. For example, a miniature water pump with a working voltage of 12V or 24V DC and a flow rate between 0.5 liters and 1.5 liters per minute can be selected. The pump starts under the command of the control system and pumps the cooling water in the ice water tank 7 into the carbonation tank 11 to provide water for carbonation. The outlet of the carbonation tank 11 is connected to the connection between the ambient temperature water supply pipeline and the faucet 2 via a fourth direct-acting valve 13. The fourth direct-acting valve 13 acts as a control switch for the output of aerated water. It can adopt a solenoid valve structure with fast response speed and high sealing requirements. It is opened when the user selects the aerated water function, so that the carbonized water is incorporated into the main water outlet path and finally output from a specific channel of the faucet 2. In addition, the cooling pipes of the cooler 8 are arranged around the carbonization tank 11. This structural design allows the refrigerant evaporation or the cooling capacity of the semiconductor cooling element to directly act on the wall of the carbonization tank 11 to cool the water inside the tank. The low temperature environment is conducive to the dissolution and stability of carbon dioxide in water, which can significantly improve the carbonization efficiency and the taste quality of sparkling water. The cooling temperature range is generally controlled between 2 degrees Celsius and 8 degrees Celsius.

[0041] The supply of sparkling water can be achieved through real-time preparation or quantitative storage. In real-time preparation, when a user requires sparkling water, the control system sequentially or simultaneously activates the self-priming pump 12 and the carbon dioxide supply device. Cold water from the ice water tank 7 is injected into the carbonization tank 11 according to the required amount, while carbon dioxide gas is simultaneously injected for mixing. Then, the fourth direct-acting valve 13 is opened, and the prepared sparkling water is output under pressure. After the sparkling water is output, the system opens the first direct-acting valve 3 and the first water pump 6 to discharge a small amount of residual sparkling water from the output pipeline through the drain pipeline. Simultaneously, the fourth direct-acting valve 13 can also be opened to discharge any remaining sparkling water in the carbonization tank. In quantitative storage, the system automatically completes the above sparkling water preparation process under normal conditions, replenishing the sparkling water to a predetermined level. When sparkling water is needed, opening the fourth direct-acting valve 13 allows for direct and rapid access. Furthermore, during the process of draining the residual water from the output pipeline after the sparkling water is taken, the fourth direct-acting valve 13 remains closed to prevent the discharge of the reserved sparkling water in the carbonization tank. The refrigeration unit 8 operates continuously or on demand, maintaining the low temperature of the water in the ice water tank 7 while keeping the carbonation tank 11 at a low temperature. By introducing a carbonation function and optimizing the refrigeration structure, a complete solution for preparing sparkling water is provided, greatly enriching the water types dispensed by the water dispenser and the user experience. At the same time, the use of independently controllable carbonation pipelines and cooling design ensures the efficiency and stability of sparkling water preparation.

[0042] The carbon dioxide supply device includes an internal interface and an external interface. The internal interface is connected to the built-in carbon dioxide cylinder 14, and the external interface is connected to the external gas supply pipeline. The water source interface includes a tap water interface and a filtered water interface. The tap water interface is connected to the municipal tap water pipeline to the outside and to the inlet of the filter 1 to the inside. The filtered water interface is connected to an external drinking water source to the outside and to a normal temperature water supply pipeline and a hot water supply pipeline to the inside.

[0043] The carbon dioxide supply unit includes both internal and external interfaces. This dual-interface design enhances the system's flexibility and applicability, adapting to various user scenarios and gas source conditions. The internal interface connects to the system's built-in carbon dioxide cylinder 14, typically a small, replaceable or refillable steel cylinder with a capacity of approximately 500 to 1000 grams. This cylinder is installed in a dedicated cylinder compartment inside the machine and reliably connects to the supply unit via quick-connect fittings or threads, facilitating user replacement. The external interface connects to external gas supply pipelines, such as large-capacity carbon dioxide storage tanks or centralized gas supply systems. The interface specifications are compatible with common gas line quick-connect fittings, such as G1 / 4 or G3 / 8-inch threads. This design is particularly suitable for commercial locations or users with high-frequency sparkling water usage, enabling continuous gas supply for extended periods without frequent cylinder replacements.

[0044] The water source interfaces include a tap water interface and a filtered water interface, further enhancing the system's adaptability to different water sources. The tap water interface connects externally to the municipal tap water pipeline and internally to the inlet of filter 1, representing the standard mode for the system to use raw water for self-filtration. This interface is typically equipped with a standard water pipe thread fitting (such as G1 / 2 or G3 / 4) and can be fitted with a pre-pressure reducing valve on the inlet path (e.g., reducing the water pressure to between 0.1 MPa and 0.5 MPa) to initially protect subsequent filter cartridges and piping components. The filtered water interface connects externally to a direct drinking water source, such as a large-scale water purification system or bottled water supply system, and internally directly to the ambient temperature water supply pipeline and hot water supply pipeline. This interface allows users to directly connect to pre-treated purified water, making it particularly suitable for applications with good water quality or existing central water purification systems. The interface can be quick-connect or clamp-type for easy connection and sealing.

[0045] Users can flexibly choose the connection method based on their actual gas and water supply conditions. For example, residential users can choose to connect to a built-in gas cylinder and tap water, while commercial users may prefer to connect to an external gas source and direct drinking water. After the system detects the corresponding interface connection, it can automatically or manually switch the gas and water supply paths. By setting multiple interface options, the flexibility of product configuration and environmental adaptability are significantly improved, enabling the water dispenser to better adapt to different user needs and infrastructure conditions, greatly enhancing the product's applicability and convenience.

[0046] In another technical solution, such as Figure 1 and Figure 2As shown, the hot water supply pipeline includes a hot water tank 15 and an auxiliary water tank 16. The hot water tank 15 is equipped with a heater. The outlet of the hot water tank 15 is connected to a third water pump 17. The outlet of the third water pump 17 is divided into two paths. One path is connected to the inlet of the faucet 2, and the other path is connected to the drain pipeline through the second direct-acting valve 4. The inlet of the hot water tank 15 is connected to the outlet of the auxiliary water tank 16, and the inlet of the auxiliary water tank 16 is connected to the outlet of the filter 1.

[0047] The hot water supply pipeline includes a hot water tank 15 and a secondary water tank 16, enabling rapid and stable hot water supply and improving system safety and energy efficiency. The hot water tank 15 is the main heat storage and heating container, and its capacity can be selected according to the model specifications; for example, it is commonly 2 to 5 liters for household models, and may be larger for commercial models. The hot water tank 15 is equipped with a heater, which can use an immersion metal heating element, a quartz heating element, or a membrane heating element, with a power range typically between 1000 watts and 3000 watts, selected based on the tank capacity and heating speed requirements. The heater is managed by a temperature control system, which monitors the water temperature through a built-in temperature sensor (such as an NTC thermistor), heats the water, and maintains it at a set drinking temperature, such as between 85 and 95 degrees Celsius, to achieve optimal drinking effect while also saving energy.

[0048] The outlet of the hot water tank 15 is connected to a third water pump 17. This pump is typically a small, high-temperature resistant pump capable of operating for extended periods in hot water environments. Its operating voltage can be 12V or 24V DC, and its flow rate ranges from 0.8 liters to 1.5 liters per minute. The outlet of the third water pump 17 is divided into two paths. One path is directly connected to the hot water inlet of the faucet 2, providing pressure to ensure a smooth flow of hot water when the user draws water. The other path is connected to the drain pipe via a second direct-acting valve 4. This design allows this path to be activated when the system needs to drain residual water from the hot water pipe or replace stagnant water, directing the stored water into the drainage system. The inlet of the hot water tank 15 is connected to the outlet of the auxiliary water tank 16. The auxiliary water tank 16 serves as a pre-storage container for the hot water tank 15, and its capacity is typically smaller than that of the hot water tank 15, acting as a buffer and providing a transitional water supply. The inlet of the auxiliary water tank 16 is connected to the outlet of the filter 1, ensuring that all incoming water is filtered clean water. The auxiliary water tank 16 can be equipped with a water level monitoring device, such as a liquid level sensor or a float switch, to control the opening and closing of the water inlet solenoid valve and achieve automatic water replenishment.

[0049] During operation, when a user needs hot water, the control system activates the third water pump 17 to pump hot water from the hot water tank 15. Simultaneously, it monitors the water levels in the auxiliary water tank 16 and the hot water tank 15. If the water level is too low, the solenoid valve on the inlet passage opens, allowing water to flow from the filter 1 into the auxiliary water tank 16, which then flows into the hot water tank 15. When the user stops drawing water or the system enters a maintenance program, the control system opens the second direct-acting valve 4 and activates the corresponding drain pump to discharge residual water from the hot water supply pipeline through the drain pipe. The dual-tank design and switchable outlet pump path ensure both immediate hot water supply and a pathway for system drainage and maintenance, significantly improving the stability and response speed of the hot water supply. It also effectively avoids bacterial growth and water quality degradation caused by residual water in the pipeline, enhancing overall drinking water health and safety.

[0050] The bottom of the hot water tank 15 is provided with a hot water direct discharge outlet for draining the water stored in the tank. The hot water direct discharge outlet is connected to the drain outlet through the fifth direct-acting valve 18.

[0051] The hot water tank 15 has a direct hot water drain outlet at its bottom. Located at the lowest point of the tank, this outlet facilitates the complete drainage of water within the tank using gravity, minimizing dead zones and residual water. This plays a crucial role in maintaining the cleanliness of the hot water tank 15's interior and preventing scale buildup. The connection between the drain outlet and the tank must ensure a tight seal and high-temperature resistance. Stainless steel welded nozzles or high-temperature resistant sealing rings can be used for the metal fittings. The diameter of the fitting can be designed according to the required drainage speed; for example, common specifications range from 8 mm to 15 mm.

[0052] The hot water direct discharge outlet is connected to the drain outlet via the fifth direct-acting valve 18. The fifth direct-acting valve 18 acts as the control switch for direct drainage from the hot water tank 15. It is typically a high-temperature resistant solenoid valve or electric ball valve, whose valve body, seals, and actuating mechanism must be able to withstand long-term high-temperature hot water environments. The operating voltage can be a safe voltage such as 12VDC or 24V DC. When the valve body receives an opening command from the control system, the valve core actuates, opening the channel, and the water in the hot water tank 15 quickly flows to the drain outlet under gravity or slight positive pressure from the system. A closing command resets the valve core, sealing the channel and stopping the water flow.

[0053] During normal heating and water supply, the fifth direct-acting valve 18 remains closed, ensuring the hot water tank 15 is sealed and insulated. However, when the system performs a thorough cleaning, descaling, or long-term maintenance procedure (e.g., based on accumulated usage time or user instructions), the control system can open the fifth direct-acting valve 18. At this time, the hot water tank 15 is connected to atmospheric pressure or slightly balanced by atmospheric pressure, allowing the accumulated water inside to be completely drained through this direct outlet without the need for complex piping and pumping, resulting in high and thorough drainage. This is particularly beneficial for draining wastewater containing impurities or scale that may have settled at the bottom of the tank. By providing a dedicated bottom direct outlet and its control valve, an efficient and thorough drainage channel is provided for the hot water tank 15, significantly improving the system's self-cleaning and maintenance capabilities, effectively reducing the risk of bacterial growth and water quality deterioration inside the hot water tank 15, thereby ensuring the purity and drinking safety of the hot water.

[0054] In another technical solution, such as Figure 1 and Figure 4 As shown, the filter 1 is provided with a water inlet chamber 101, a surface filter screen 102, a filter layer 103, and a purified water chamber 104 arranged sequentially along the water flow direction. The water inlet chamber 101 is provided with a filtered water inlet, a flushing water inlet, and a wastewater outlet. A spiral vortex pipe 105 is provided inside the water inlet chamber 101. The water inlet end of the vortex pipe 105 is connected to the flushing water inlet, and the water outlet end of the vortex pipe 105 is obliquely aligned with the surface of the surface filter screen 102. The purified water chamber 104 is provided with a purified water outlet, which is connected to a normal temperature water supply pipeline and a hot water supply pipeline.

[0055] The filter 1 contains, in sequence along the water flow direction, a tap water chamber 101, a surface filter screen 102, a filter layer 103, and a purified water chamber 104. This multi-stage series chamber structure constitutes a highly efficient filtration system with self-cleaning capabilities. The tap water chamber 101 serves as the first buffer and pretreatment area after the raw water enters the filter element. Its shell is typically made of food-grade plastic or stainless steel. This chamber has a filter water inlet, a flushing water inlet, and a wastewater outlet. The filter water inlet receives the raw water from the water source interface, the flushing water inlet introduces a reverse or lateral flushing water flow with a certain flow rate and pressure, and the wastewater outlet connects to the system drain pipe to discharge the wastewater generated during flushing. The tap water chamber 101 contains a spiral vortex pipe 105, which is typically molded into the inner wall of the chamber or installed as an independent component. Its inlet end is connected to the flushing water inlet, and the outlet end is specially designed to be angled towards the surface of the surface filter screen 102. The vortex pipe 105 can be an assembly of multiple spiral pipes to achieve full coverage of the water flow. When the flushing water flows through the vortex pipe 105, it forms a rotating jet, using centrifugal force and the impact force of the water flow to flush the surface of the filter screen.

[0056] The surface filter 102, serving as the first physical barrier in the filtration system, is typically made of a polymer mesh structure. Its pore size can be selected based on filtration precision requirements, such as a size between 50 and 100 micrometers. It primarily intercepts large particles, sediment, rust, and other suspended solids in the water. The filter layer 103, located after the surface filter 102, is the core component of the filter 1. It can be composed of various filter media, such as PP cotton, activated carbon granules, sintered activated carbon blocks, and ultrafiltration membranes. These materials further remove fine particles, organic matter, residual chlorine, odors, and some microorganisms from the water through physical adsorption and sieving principles. The purified water chamber 104 is the cavity that holds the filtered clean water. Its internal space design helps stabilize the water flow and collect the product water. The purified water chamber 104 is equipped with a purified water outlet, which is connected to the system's ambient temperature water supply pipeline and hot water supply pipeline via pipes, thereby delivering the purified water to the point of use.

[0057] Filter 1 has two main operating modes: normal filtration mode and flushing mode. During normal filtration, raw water enters the tap water chamber 101 through the filter water inlet via a valve, passing sequentially through the surface filter screen 102 and the filter layer 103. Impurities are trapped, and the purified water flows into the purified water chamber 104 and exits from the purified water outlet. In flushing mode (which can be started on a timer or based on a differential pressure signal), the control system pumps a portion of the filtered purified water or external water into the vortex pipe 105 through the flushing water inlet. The resulting rotating jet obliquely impacts the outer surface of the surface filter screen 102, washing away the trapped impurities. The wastewater mixed with impurities is then discharged from the wastewater outlet. By optimizing the internal structure of filter 1 and integrating the vortex flushing function, the self-cleaning ability and filtration efficiency of filter 1 are significantly improved, effectively extending the service life of the filter element and reducing the frequency of manual maintenance. Simultaneously, multi-stage filtration ensures the purity and stability of the effluent water quality, providing users with a more reliable and healthy drinking water guarantee. Furthermore, the flushing water inlet of the tap water chamber 101 is also connected to the filtered water interface. When the user switches the water source from tap water to an external drinking water source, the tap water supply may be cut off, making it impossible to clean the filter 1 with tap water. When using an external drinking water source, the water does not need to flow through the filter 1, so the filter 1 may not be used for a long time. If impurities have accumulated on the inner surface of the filter screen 102 of the filter 1, scale will form after the water supply is cut off. If it is not cleaned in time, it will affect the filtration effect when the tap water is turned on again. Therefore, after switching the water supply, the filter 1 can be cleaned with clean water from the external drinking water source to keep the filter 1 clean when it is not in use. Alternatively, when the user returns to use this drinking water device after a long business trip or travel, the cleaning function can be activated first. While cleaning the various water supply pipes, the filter 1 can also be cleaned to ensure that the first sip of drinking water from this device is clean and fresh water.

[0058] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0059] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A zero-residual-water water purifier system, characterized in that, It includes a water source interface, a drain outlet, a filter, a normal temperature water supply pipeline, a hot water supply pipeline, a drain pipeline, and a faucet; the inlet end of the filter is connected to the water source interface, and the outlet end of the filter is connected to the inlet end of the faucet through the normal temperature water supply pipeline and the hot water supply pipeline. The outlet end of the filter is also connected to the drain outlet through a third direct-acting valve; the inlet end of the drain pipeline is connected to the connection between the normal temperature water supply pipeline and the faucet through a first direct-acting valve, and to the connection between the hot water supply pipeline and the faucet through a second direct-acting valve; the outlet end of the drain pipeline is connected to the drain outlet through a first water pump.

2. The zero-residue water purifier system according to claim 1, characterized in that, It also includes a chilled water supply pipeline, which includes a chilled water tank equipped with a chiller. The outlet of the chilled water tank is connected to the connection point of the ambient temperature water supply pipeline and the faucet via a second water pump. The inlet of the chilled water tank is connected to the outlet of the filter.

3. The zero-residue water purifier system according to claim 2, characterized in that, The outlet of the chilled water tank is located at the bottom of the tank, and the outlet of the chilled water tank is connected to the drain pipe through the sixth direct-acting valve.

4. The zero-residue water purifier system according to claim 2, characterized in that, It also includes carbonized water pipeline, which includes a carbonization tank built into the ice water tank. The air inlet of the carbonization tank is connected to a carbon dioxide supply device. The water inlet of the carbonization tank is connected to the water outlet of the ice water tank through a self-priming pump. The water outlet of the carbonization tank is connected to the connection point of the ambient temperature water supply pipeline and the faucet through a fourth direct-acting valve. The refrigeration pipes of the refrigerator are arranged around the carbonization tank.

5. The zero-residue water purifier system according to claim 4, characterized in that, The carbon dioxide supply device includes an internal interface and an external interface. The internal interface is connected to the built-in carbon dioxide cylinder, and the external interface is connected to the external supply pipeline. The water source interface includes a tap water interface and a filtered water interface. The tap water interface is connected to the municipal tap water pipeline to the outside and to the inlet of the filter to the inside. The filtered water interface is connected to an external drinking water source to the outside and to a normal temperature water supply pipeline and a hot water supply pipeline to the inside.

6. The zero-residue water purifier system according to claim 1, characterized in that, The hot water supply pipeline includes a hot water tank and a secondary water tank. The hot water tank is equipped with a heater. The outlet of the hot water tank is connected to a third water pump. The outlet of the third water pump is divided into two paths. One path is connected to the inlet of the faucet, and the other path is connected to the drain pipeline through a second direct-acting valve. The inlet of the hot water tank is connected to the outlet of the secondary water tank, and the inlet of the secondary water tank is connected to the outlet of the filter.

7. The zero-residue water purifier system according to claim 6, characterized in that, The bottom of the hot water tank is equipped with a hot water direct discharge outlet for draining the water in the tank. The hot water direct discharge outlet is connected to the drain outlet through the fifth direct-acting valve.

8. The zero-residue water purifier system according to claim 1, characterized in that, The filter contains, in sequence along the water flow direction, a tap water chamber, a surface filter, a filter layer, and a purified water chamber. The tap water chamber has a filtered water inlet, a flushing water inlet, and a wastewater outlet. Inside the tap water chamber, there is a spiral vortex pipe. The inlet end of the vortex pipe is connected to the flushing water inlet, and the outlet end of the vortex pipe is angled towards the surface of the surface filter. The purified water chamber has a purified water outlet, which is connected to both a room temperature water supply line and a hot water supply line.

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