Waterway system of multifunctional water dispenser and multifunctional water dispenser

Abstract

This utility model discloses a water circuit system and a multi-functional water dispenser, belonging to the field of water dispenser technology. It aims to solve the problems of existing water dispensers having limited functionality and occupying a large countertop area. The system includes a faucet, a filtered water circuit with a filter assembly and its inlet connected to the municipal water supply, a hot water circuit with a heating assembly and its inlet connected to the first outlet of the filtered water circuit and its outlet connected to the faucet inlet, a cold water circuit with a cooling assembly and its inlet connected to the first outlet of the filtered water circuit and its outlet connected to the faucet inlet, a sparkling water circuit with a carbonation assembly and its inlet connected to the cold water circuit outlet and its outlet connected to the faucet inlet, a normal temperature water circuit with its inlet connected to the first outlet of the filtered water circuit and its outlet connected to the faucet inlet, and solenoid valves controlling the on / off state of each water circuit. It is mainly used to provide normal temperature, hot, cold, and sparkling water, replacing multiple devices and saving space.

Description

Technical Field

[0001] This utility model relates to the field of water dispenser technology, specifically to a water circuit system and a multi-functional water dispenser. Background Technology

[0002] Most water purification systems on the market can only provide one or two types of drinking water (such as room temperature water or hot water). If users need to obtain a variety of drinking water, such as cold water or sparkling water, they must purchase separate equipment, such as a refrigerator for making ice or a dedicated sparkling water machine for making carbonated beverages. These devices are scattered throughout the kitchen, increasing purchase costs and creating clutter. Especially for families with limited countertop space, placing multiple devices side by side further compresses the usable area. Some countertop water purifiers attempt to integrate filtration and heating functions, but because the entire unit needs to be placed on the kitchen countertop, it inevitably encroaches on the work area. If cooling or sparkling water functions are added to these devices, the overall size will increase significantly, exceeding the size tolerance of ordinary families for countertop equipment. Meanwhile, while under-sink concealed installation can avoid countertop occupation, the narrow cabinet space and poor heat dissipation make it difficult to accommodate or stably operate multi-functional modules (such as refrigeration compressors and gas storage units). Utility Model Content

[0003] This utility model provides a water circuit system and a multi-functional water dispenser, which can solve the problems of existing water dispensers having limited functions and occupying a large countertop area.

[0004] To achieve these and other advantages according to the present invention, a water system for a multifunctional water dispenser is provided, comprising: Faucet; The water filtration system is equipped with a filtration assembly, and the inlet end of the filtration system is connected to the municipal water system. The hot water circuit is equipped with a heating component. The inlet end of the hot water circuit is connected to the first outlet of the filter water circuit, and the outlet end is connected to the inlet of the faucet. The cold water circuit is equipped with a refrigeration component. The inlet end of the cold water circuit is connected to the first outlet of the filter water circuit, and the outlet end is connected to the inlet of the faucet. The sparkling water circuit is equipped with a carbonation component. The inlet end of the sparkling water circuit is connected to the outlet end of the cold water circuit, and the outlet end is connected to the inlet of the faucet. The room temperature water circuit has its inlet end connected to the first outlet of the filter water circuit and its outlet end connected to the inlet of the faucet. The filtered water path, the hot water path, the cold water path, the aerated water path, and the room temperature water path are respectively equipped with a main solenoid valve, a hot water solenoid valve, a cold water solenoid valve, an aerated water solenoid valve, and a room temperature water solenoid valve to control their on / off states. The main solenoid valve is located near the inlet of the filtered water path. The refrigeration components include a cold water tank, an evaporator, a condenser, a compressor, and a dryer filter. The cold water tank is connected in series in the cold water circuit. A first water pump is connected in series in the cold water circuit between the outlet of the cold water tank and the faucet. The evaporator, condenser, compressor, and dryer filter are connected in series in sequence. The evaporator is located inside the cold water tank. The cold water solenoid valve is located on the inlet side of the cold water tank. The carbonation assembly includes: a carbonation tank disposed inside the cold water tank, the inlet of the carbonation tank being connected to the outlet of the cold water tank and a first booster pump being disposed between them, the outlet being connected to the inlet of the faucet, and the sparkling water solenoid valve being disposed on the outlet side of the carbonation tank; and a carbon dioxide cylinder whose outlet is connected to the carbonation tank.

[0005] Preferably, in the water circuit system of the multifunctional water dispenser, the heating component includes: a heater connected in series in the hot water circuit, a hot water solenoid valve being provided between the inlet of the heater and the first outlet of the filtered water circuit, and a second water pump being provided between the hot water solenoid valve and the inlet of the heater; and a preheating water tank, the inlet of which is connected to the outlet of the heater and the outlet of which is connected to the inlet of the second water pump, and a preheating water solenoid valve being provided at the outlet of the preheating water tank.

[0006] Preferably, in the water system of the multi-functional water dispenser, a reversing solenoid valve is provided at the outlet of the heater so that the water flowing through the heater can selectively flow into the faucet or the preheating water tank.

[0007] Preferably, in the water system of the multi-functional water dispenser, a second booster pump is provided in the filtration water circuit between the filter assembly and the main solenoid valve.

[0008] Preferably, the water system of the multi-functional water dispenser further includes: a return water pipe, the inlet end of which is connected to the inlet of the faucet and the outlet end of which is connected to the inlet of the second booster pump, and a return water solenoid valve is provided on the return water pipe.

[0009] Preferably, in the water system of the multi-functional water dispenser, the outlet of the preheated water tank is connected to the return water pipe through a first purified water pipe, and a first solenoid valve is installed on the first purified water pipe; the hot water pipe on the inlet side of the heater is connected to the return water pipe through a second purified water pipe, and a second solenoid valve is installed on the second purified water pipe; the outlet of the ice water tank is connected to the return water pipe through a third purified water pipe, and a third solenoid valve is installed on the third purified water pipe.

[0010] Preferably, in the water system of the multi-functional water dispenser, the second outlet of the filtered water circuit is connected to the sewer through a drain pipe, and a drain solenoid valve is installed on the drain pipe.

[0011] This utility model also provides a multi-functional water dispenser, which includes the water system of the multi-functional water dispenser described in any of the above technical solutions.

[0012] This utility model has at least the following beneficial effects: 1. Highly integrated functions, a single system integrates four drinking modes: room temperature, hot water, cold water, and sparkling water, replacing multiple devices such as traditional water dispensers, ice makers, and sparkling water machines; 2. Extremely simple operation: users can switch water types with a single tap without operating multiple devices; 3. Zero space encroachment: All components can be hidden under the kitchen cabinet, with only the faucet exposed on the countertop, completely solving the problem of traditional countertop water purifiers occupying operating space; 4. Water quality is uniformly guaranteed. All types of water use are based on the same filtered water source, eliminating the risk of cross-contamination.

[0013] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the water system structure of a multifunctional water dispenser according to one of the technical solutions of this utility model; Among them, 1-main solenoid valve, 3-second booster pump, 7-drain solenoid valve, 8-hot water solenoid valve, 11-first solenoid valve, 12-second solenoid valve, 13-second water pump, 15-preheating water solenoid valve, 16-third solenoid valve, 19-heater, 21-preheating water tank, 22-compressor, 23-condenser, 24-cold water solenoid valve, 25-carbon dioxide cylinder, 26-dryer filter, 28-cold water tank, 30-carbonization tank, 32-evaporator, 34-aerated water solenoid valve, 37-first booster pump, 39-first water pump, 40-reversing solenoid valve, 41-normal temperature water solenoid valve, 43-return water solenoid valve. Detailed Implementation

[0015] 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.

[0016] 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.

[0017] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the reagents and materials described are commercially available. In the description of this utility model, it should be noted that, unless otherwise explicitly specified 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.

[0018] like Figure 1 As shown, this utility model provides a water system for a multifunctional water dispenser, including: 46 faucets; The water filtration system is equipped with a filtration assembly, and the inlet end of the filtration system is connected to the municipal water system. The hot water circuit is equipped with a heating component. The inlet end of the hot water circuit is connected to the first outlet of the filter water circuit, and the outlet end is connected to the inlet of the faucet 46. The cold water circuit is equipped with a refrigeration component. The inlet end of the cold water circuit is connected to the first outlet of the filter water circuit, and the outlet end is connected to the inlet of the faucet 46. The sparkling water circuit is equipped with a carbonation component. The inlet end of the sparkling water circuit is connected to the outlet end of the cold water circuit, and the outlet end is connected to the inlet end of the faucet 46. The room temperature water circuit has its inlet end connected to the first outlet of the filter water circuit and its outlet end connected to the inlet of the faucet 46. The filtered water path, the hot water path, the cold water path, the aerated water path, and the room temperature water path are respectively equipped with a main solenoid valve 1, a hot water solenoid valve 8, a cold water solenoid valve 24, an aerated water solenoid valve 34, and a room temperature water solenoid valve 41 to control their on / off states. The main solenoid valve 1 is located near the inlet of the filtered water path.

[0019] The water system of this multifunctional water dispenser mainly consists of five independent functional water circuits and an integrated faucet 46. Municipal tap water first enters the filtration water circuit, passing through its internal filtration components, such as a reverse osmosis filter, to be purified into pure water. The outlet of the filtration water circuit simultaneously connects to four branch water circuits: first, a hot water circuit with an internal heating component to provide hot water; second, a cold water circuit with an internal cooling component to output cold water; third, a sparkling water circuit, whose inlet is directly connected to the cold water circuit outlet, using cold water as raw material and having an internal carbonation component to generate sparkling water; and fourth, a room temperature water circuit, directly supplying unheated / uncooled room temperature pure water. All water circuit outlets converge at the same faucet 46. The core control unit consists of five sets of solenoid valves: a main solenoid valve 1 is installed at the inlet of the filtered water circuit as the main switch; hot water circuit, cold water circuit, aerated water circuit, and normal temperature water circuit inlet are respectively equipped with hot water solenoid valve 8, cold water solenoid valve 24, aerated water solenoid valve 34, and normal temperature water solenoid valve 41, which can be independently opened and closed by the electronic control system.

[0020] The working principle of the water system of the multifunctional water dispenser in this utility model is as follows: When the user selects the water outlet type, the electronic control system opens the corresponding solenoid valve as needed: When taking room temperature water, the room temperature water solenoid valve 41 is opened, and the filtered pure water flows directly to the faucet 46 through the room temperature water circuit. When hot water is needed, the hot water solenoid valve 8 is opened, and pure water flows through the hot water circuit, passes through the heating element to heat up, and then flows to the faucet 46; When cold water is taken, the cold water solenoid valve 24 is opened, and pure water flows through the cold water circuit, passes through the refrigeration components to cool down, and then flows to the faucet 46. When taking sparkling water, the cold water solenoid valve 24 is opened first to prepare cold water, and then the sparkling water solenoid valve 34 is opened to send the cold water into the carbonation component to generate sparkling water, which then flows to the faucet 46.

[0021] When in use, only one water circuit is in operation at any given time. For example, when taking sparkling water, both the room temperature water circuit and the hot water circuit are turned off to ensure that the water sources do not mix and there is no conflict in operation.

[0022] This utility model has at least the following beneficial effects: This invention constructs five independent water circuits within a single system: a filtration circuit purifies municipal water; hot and cold water circuits each have built-in heating and cooling components; a sparkling water circuit directly connects to the cold water circuit outlet to reuse chilled purified water as raw material; and a room temperature water circuit provides untreated filtered purified water. All water circuits ultimately converge at a single faucet output, allowing one device to simultaneously support four drinking modes: room temperature, hot water, cold water, and sparkling water. This design completely replaces the traditional solution of multiple independent devices such as refrigerators, sparkling water machines, and kettles, fundamentally eliminating the space clutter problem caused by the dispersed placement of multiple devices. In other words, this invention, through its integrated water circuit design and electrical control mechanism, effectively solves the problems of device stacking due to single-function limitations and integration difficulties caused by space constraints in the prior art.

[0023] This utility model adopts an under-sink concealed layout: all functional modules (filtration, heating, cooling, and foaming) are built into the cabinet below, with only the faucet 46 exposed on the countertop. This architecture completely frees up kitchen countertop space, overcoming the shortcomings of traditional countertop equipment that encroaches on the work area due to its increased size. Simultaneously, the five water circuits achieve precise time-sharing control through a group of solenoid valves: the main solenoid valve 1 centrally manages the water supply opening and closing, while the hot water solenoid valve 8, cold water solenoid valve 24, sparkling water solenoid valve 34, and room temperature water solenoid valve 41 independently open and close a single path as needed. For example, when sparkling water is needed, the system sequentially activates the cold water circuit for cooling, then activates the sparkling water circuit for foaming, and the other water circuits automatically shut off. This electrical flow path isolation mechanism avoids the volume expansion caused by the physical intersection of multiple water circuits and eliminates temperature crosstalk, allowing complex functions to operate stably in the narrow under-sink space.

[0024] In another technical solution, such as Figure 1 As shown, in the water system of the multi-functional water dispenser, the refrigeration components include a cold water tank 28, an evaporator 32, a condenser 23, a compressor 22, and a dryer filter 26. The cold water tank 28 is connected in series in the cold water circuit. A first water pump 39 is connected in series in the cold water circuit between the outlet of the cold water tank 28 and the faucet 46. The evaporator 32, the condenser 23, the compressor 22, and the dryer filter 26 are connected in series in sequence. The evaporator 32 is located inside the cold water tank 28. The cold water solenoid valve 24 is located on the inlet side of the cold water tank 28. In this technical solution, the refrigeration components in the cold water circuit are specifically defined as five core parts: a cold water tank 28 for storing refrigerated pure water; an evaporator 32 directly immersed in the water in the cold water tank 28, responsible for absorbing heat; a condenser 23 and a compressor 22 working together to compress the refrigerant; and a dryer filter 26 to ensure the purity of the refrigerant. A cold water solenoid valve 24 is installed on the inlet side of the cold water tank 28 to control the injection of pure water, and a first water pump 39 is connected in series on the outlet side to actively pump the ice water to the faucet 46. The evaporator 32, condenser 23, compressor 22, and dryer filter 26 are connected by pipes to form a closed refrigeration cycle system, whose working principle is the same as that of a refrigerator: the compressor 22 drives the refrigerant circulation, which flows through the condenser 23 to dissipate heat, and then enters the evaporator 32 to absorb heat and cool down, thus maintaining the water temperature in the cold water tank 28 stably at 4-10℃.

[0025] When a user needs cold water, the cold water solenoid valve 24 opens, and filtered pure water is injected into the cold water tank 28. The refrigeration system monitors the water temperature in real time: if it is higher than 10℃, the compressor 22 automatically starts, and the refrigerant evaporates in the evaporator 32 and absorbs heat from the water tank until the water temperature drops to 4℃. When the user draws water, the first water pump 39 draws ice water from the bottom of the cold water tank 28 and delivers it to the faucet 46 through pipes. The entire process is completely independent of other water circuits (such as hot water circuits or aerated water circuits), and refrigeration and water drawing can be carried out simultaneously. The compressor 22 continuously maintains a low temperature, and the water pump draws water as needed, achieving "instant cooling".

[0026] In this technical solution, the evaporator 32 uses direct immersion heat exchange, which increases the cooling speed by more than 50% compared to traditional indirect cooling. The water temperature can be reduced from room temperature to 4°C within 5 minutes. The first water pump 39 actively delivers water (not by gravity), solving the problem of delayed water output caused by water level differences in under-sink installations. The dryer filter 26 prevents refrigerant impurities from clogging the pipes, and the compressor 22 automatically starts and stops based on water temperature, avoiding unnecessary power consumption. The refrigeration components are completely built into the cold water circuit without adding any additional terminals, maintaining the compactness of the under-sink space.

[0027] In another technical solution, such as Figure 1 As shown, in the water system of the multi-functional water dispenser, the carbonation component includes: a carbonation tank 30, which is disposed inside the cold water tank 28, with the inlet of the carbonation tank 30 connected to the outlet of the cold water tank 28 and a first booster pump 37 disposed between them, and the outlet connected to the inlet of the faucet 46; a sparkling water solenoid valve 34 disposed on the outlet side of the carbonation tank 30; and a carbon dioxide cylinder 25, the outlet of which is connected to the carbonation tank 30.

[0028] The sparkling water preparation assembly in this technical solution comprises three key parts: a sealed carbonization tank 30, a carbon dioxide cylinder 25, and a first booster pump 37. The carbonization tank 30 is completely immersed in ice water in a cold water tank 28, maintained at a low temperature by a refrigeration unit. A gas inlet and a liquid outlet are located at its top. The carbon dioxide cylinder 25 is connected to the gas inlet of the carbonization tank 30 via a pressure reducing valve, continuously injecting high-pressure gas into the tank. The inlet of the first booster pump 37 is connected to the outlet of the cold water tank 28, and the outlet of the first booster pump 37 is connected to the liquid inlet of the carbonization tank 30, used to pressurize and inject cooled pure water into the carbonization tank 30. The liquid outlet of the carbonization tank 30 is connected to a faucet 46 via an independent pipe, and a sparkling water solenoid valve 34 is installed at the liquid outlet of the carbonization tank 30 to control its on / off state.

[0029] When a user selects sparkling water, the system works in two coordinated steps: 1. Foaming stage: The first booster pump 37 starts, drawing ice water from the cold water tank 28 and pressurizing it before injecting it into the carbonation tank 30. The pre-filled high-pressure carbon dioxide gas in the carbonation tank 30 rapidly dissolves in the ice water under pressure, forming a carbonated liquid (sparkling water); 2. Water dispensing stage: The sparkling water solenoid valve 34 opens, and the gas pressure inside the carbonation tank 30 pushes the sparkling water through the pipe to the faucet 46 for output. The entire process runs parallel and independently to the cold water preparation—the refrigeration components continuously maintain the low-temperature environment of the carbonation tank 30, ensuring high carbon dioxide solubility.

[0030] In this technical solution, the carbonization tank 30 is immersed in an ice water environment (4-10℃). The low temperature significantly improves the carbon dioxide dissolution rate, resulting in finer and longer-lasting bubbles. The ice water generated by the refrigeration components is used directly as raw material, saving the need for independent ice-making equipment and energy consumption. The carbonization tank 30 is built into the cold water tank 28, and the carbon dioxide cylinder 25 is vertically attached to the side wall of the kitchen cabinet, without adding any volume. The sealed carbonization tank isolates air pollution, and the bubble water solenoid valve 34 can be quickly opened and closed to prevent residual water from breeding bacteria.

[0031] In another technical solution, such as Figure 1 As shown, in the water circuit system of the multi-functional water dispenser, the heating component includes: a heater 19 connected in series in the hot water circuit, a hot water solenoid valve 8 provided between the inlet of the heater 19 and the first outlet of the filter water circuit, and a second water pump 13 provided between the hot water solenoid valve 8 and the inlet of the heater 19; a preheating water tank 21, whose inlet is connected to the outlet of the heater 19 and whose outlet is connected to the inlet of the second water pump 13, and a preheating water solenoid valve 15 provided at the outlet of the preheating water tank 21.

[0032] In this technical solution, the heating assembly consists of three core components: a heater 19, a second water pump 13, and a preheating water tank 21 with insulation. The heater 19 is connected in series in the hot water circuit, and its inlet is connected to the outlet of the filtered water circuit via a pipe. A hot water solenoid valve 8 and the second water pump 13 (for actively supplying water to the heater 19) are sequentially installed at the inlet. The heater 19 outlet has two paths: one directly connects to a faucet 46, and the other connects to the inlet of the preheating water tank 21. A preheating solenoid valve 15 is installed at the outlet of the preheating water tank 21 and is connected to the inlet of the second water pump 13 via a pipe, forming a circulation loop. The preheating water tank 21 is wrapped with high-density insulation material to reduce heat loss.

[0033] When the system prepares hot water: First, preheating is performed. The hot water solenoid valve 8 opens, and the second water pump 13 injects filtered pure water into the heater 19. After heating to approximately 60°C, the water is delivered to the preheating water tank 21 for storage. Heating is paused once the preheating water tank 21 is full, and the insulation layer maintains the water temperature. Then, instant hot water is dispensed. When a user needs hot water, the second water pump 13 draws 60°C warm water from the preheating water tank 21, which is then instantly heated a second time by the heater 19 to the set temperature, such as 95°C, before being delivered to the faucet 46. This process, through a circulating heating mechanism, avoids the waiting delay caused by directly heating cold water.

[0034] This technical solution preheats and stores warm water, which is then heated twice, increasing the flow rate by more than 50% compared to traditional instantaneous heating systems, thus solving the problem of slow water output during instantaneous heating. It only heats the pre-stored warm water (not cold water), saving 30% more energy than heating the entire tank. The insulation layer ensures that the temperature difference in the preheated water tank 21 is ≤5℃, avoiding repeated heating and energy consumption.

[0035] In another technical solution, such as Figure 1 As shown, in the water system of the multi-functional water dispenser, a reversing solenoid valve 40 is provided at the outlet of the heater 19 so that the water flowing through the heater 19 can selectively flow into the faucet 46 or the preheating water tank 21.

[0036] In this technical solution, a reversing solenoid valve 40 is added to the output end of the heater 19. The reversing solenoid valve 40 has a three-way control function: the inlet is connected to the outlet of the heater 19, the first outlet is directly connected to the faucet 46, and the second outlet is connected to the inlet of the preheating water tank 21. The reversing solenoid valve 40 is controlled in real time by the electronic control system, switching the water flow direction according to the user's water demand. The outlet of the preheating water tank 21 is still connected to the inlet of the second water pump 13 through an independent pipe to maintain the integrity of the preheating circulation loop.

[0037] This technical solution automatically adjusts the state of the reversing solenoid valve 40 according to the water intake mode: Instant hot water mode: When the user directly requests high-temperature hot water (e.g., 95℃), the reversing solenoid valve 40 switches to the direct-flow faucet 46 direction. The second water pump 13 draws filtered pure water (not stored in the preheating tank 21), heats it to the target temperature in one go by the heater 19, and then directly delivers it to the faucet 46. This process completely bypasses the preheating tank 21, achieving "zero-wait" high-temperature water output.

[0038] Preheating and storage mode: When the system detects insufficient water in the preheating water tank 21, the reversing solenoid valve 40 switches to the preheating water tank 21 direction. The heater 19 heats the pure water to 60°C and then injects it into the preheating water tank 21 for storage, while the insulation layer maintains the water temperature. If the user needs hot water at this time, the secondary heating process is followed, that is, water is drawn from the preheating water tank 21 to the heater 19 for reheating.

[0039] When using this technical solution for high-frequency, low-volume water intake (such as for brewing tea), the direct-flow mode outputs 95°C boiling water within 5 seconds; when using low-frequency, high-volume water intake (such as for cooking noodles), the preheating water tank 21 is activated to ensure a continuous supply; the direct-flow mode avoids the micro-contamination that may occur from long-term water storage in the preheating water tank 21; the two modes are physically isolated to prevent temperature fluctuations caused by the mixing of high-temperature water and preheated warm water; the direct-flow mode heats water on demand, reducing preheating energy consumption; the storage mode utilizes off-peak electricity pricing periods to centrally produce water, reducing operating costs.

[0040] In another technical solution, such as Figure 1 As shown, in the water system of the multi-functional water dispenser, a second booster pump 3 is installed on the filtration water circuit between the filter assembly and the main solenoid valve 1.

[0041] The second booster pump 3 can actively pressurize the municipal water output from the main solenoid valve 1 to ≥1MPa, exceeding the RO membrane's operating threshold, ensuring efficient impurity separation by the reverse osmosis filter element and increasing pure water production by 66%. When multiple water circuits request water supply simultaneously, such as parallel water replenishment for the cooling + heating modules, the second booster pump 3 increases the flow distribution capacity in real time, avoiding the reduction in filtered water flow rate due to diversion. The second booster pump 3 can also absorb water pressure fluctuations caused by the opening and closing of the main solenoid valve 1, preventing instantaneous high-pressure impacts from damaging the RO membrane structure. As the core pressurization unit of the filtered water circuit, the second booster pump 3 not only undertakes the opening and closing control of the main solenoid valve 1 but also provides a high-pressure pure water source for all subsequent functional water circuits (hot water / cold water / aerated water / room temperature water).

[0042] In another technical solution, such as Figure 1 As shown, the water system of the multi-functional water dispenser also includes: a return water pipe, the inlet end of which is connected to the inlet of the faucet 46 and the outlet end of which is connected to the inlet of the second booster pump 3, and a return water solenoid valve 43 is provided on the return water pipe.

[0043] This technical solution adds a return water pipeline to the water circuit architecture. The inlet end of the return water pipeline is connected to the inlet of faucet 46, and the outlet end is connected to the inlet of the second booster pump 3. A return water solenoid valve 43 is installed on the return water pipeline to control its on / off state. The return water pipeline is independent of all functional water circuits (filtration, hot water, cold water, aerated water, and room temperature water), forming a closed-loop recycling channel.

[0044] When the user turns off the tap 46 and stops water flow, the system automatically executes the residual water removal procedure: 1. Return water trigger: The electrical control system closes the currently operating function water circuit solenoid valve, such as closing the cold water solenoid valve 24, and at the same time opens the return water solenoid valve 43; 2. Active suction: The second booster pump 3 starts and draws the water remaining in the pipe between the faucet 46 and the functional water outlet back to the inlet of the second booster pump 3 through the return water pipe. 3. Recirculation and purification: The pumped-out water re-enters the filtration system, undergoes secondary purification by the filtration components, and then participates in the subsequent water production process.

[0045] This technical solution completely eliminates stagnant water in the pipes, preventing bacterial growth in the ambient / cold water circuits. Experiments show that the total number of colonies decreases by 99%. It also avoids contamination of newly produced hot water by residual water in the hot water circuit after cooling. Water is recycled, making efficient use of water resources. The second booster pump 3 is directly reused as a power source, eliminating the need for additional pumping equipment. It seamlessly links with the control of each functional water circuit, and the solenoid valves open and close in unison without conflict.

[0046] In another technical solution, such as Figure 1 As shown, in the water system of the multi-functional water dispenser, the outlet of the preheating water tank 21 is connected to the return water pipe through a first purified water pipe, and a first solenoid valve 11 is installed on the first purified water pipe. The hot water pipe on the inlet side of the heater 19 is connected to the return water pipe through a second purified water pipe, and a second solenoid valve 12 is installed on the second purified water pipe. The outlet of the cold water tank 28 is connected to the return water pipe through a third purified water pipe, and a third solenoid valve 16 is installed on the third purified water pipe.

[0047] This technical solution extends the return water pipeline with three branch recovery channels: the first purified water pipe connects the outlet of the preheating water tank 21 to the return water pipeline, and a first solenoid valve 11 is installed on the first purified water pipe; the second purified water pipe connects the hot water pipeline at the inlet side of the heater 19 to the return water pipeline, and a second solenoid valve 12 is installed on the second purified water pipe; the third purified water pipe connects the outlet of the cold water tank 28 to the return water pipeline, and a third solenoid valve 16 is installed on the third purified water pipe. The three branch pipelines are independently controlled and together with the main return water pipeline, form a multi-stage recovery network.

[0048] When the system performs cleaning or draining operations, such as when the user activates the one-button cleaning mode, the hot water solenoid valve 15 and the first solenoid valve 11 open, allowing the residual warm water in the preheated water tank 21 to flow into the return water pipe via the first purified water pipe; the second solenoid valve 12 opens, allowing the water stored in the heater 19 and part of the hot water pipe at its inlet to flow into the return water pipe via the second purified water pipe; the third solenoid valve 16 opens, allowing the cold water accumulated in the cold water tank 28 to flow into the return water pipe via the third purified water pipe. Simultaneously, the return water solenoid valve 43 opens, and the second booster pump 3 starts, pumping all the recovered water to the filtration system, where it undergoes deep purification via the RO reverse osmosis filter before re-entering the water production cycle. The entire process is completed automatically without manual intervention.

[0049] This technical solution covers three areas prone to bacterial growth: the preheating water tank 21, the hot water pipes, and the cold water tank 28, eliminating stagnant water. Experiments have shown that there is no water deterioration after 72 hours. One-button start completes the cleaning of the entire water circuit, reducing the time spent on traditional disassembly and cleaning by 95%. It also improves resource recycling efficiency. All solenoid valves are compatible with the electrical control system, with no protocol conflicts.

[0050] In another technical solution, such as Figure 1 As shown, in the water system of the multi-functional water dispenser, the second outlet of the filtered water circuit is connected to the sewer through a drain pipe, and a drain solenoid valve 7 is installed on the drain pipe.

[0051] This technical solution adds a drain pipe at the end of the filtration water circuit. The inlet of this drain pipe is connected to the concentrate outlet of the filtration component (such as an RO reverse osmosis filter element), and the outlet leads directly to the sewer. A drain solenoid valve 7 is installed on the drain pipe as a control switch, independent of other functional water circuits. The concentrate (including wastewater containing impurities) generated when the filtration component is working is discharged directionally through this pipe to avoid cross-contamination with the purified water circuit.

[0052] This technical solution's system operates in two modes: I. Daily Filtration and Discharge: When the main solenoid valve 1 is opened, municipal water enters the filter assembly for purification, and some of the incoming water becomes concentrated water containing high concentrations of impurities. The drain solenoid valve 7 opens simultaneously, and the concentrated water is discharged into the sewer in real time, ensuring stable filtration efficiency.

[0053] II. System Active Drainage: When the user starts the cleaning program, such as one-click cleaning, the drain solenoid valve 7, the first solenoid valve 11, the hot water solenoid valve 15, and the third solenoid valve 16 are all opened, and the second booster pump 3 pressurizes in reverse to force out the residual water in the preheated water tank 21, the residual water in the cold water tank 28, and the residual concentrated water inside the filter components, so as to prevent the growth of bacteria in the water tank and the deposition of impurities in the filter element.

[0054] This technical solution discharges concentrated water in real time to prevent the RO membrane from clogging too quickly; extends the filter cartridge life; physically isolates concentrated water from purified water to eliminate the risk of backflow and contamination; the active evacuation mode removes impurities and scale from the filter cartridge, reducing the failure rate; the second booster pump 3 provides evacuation power without the need for additional components; the drain solenoid valve 7 is seamlessly linked with the electronic control system, resulting in zero additional operating costs.

[0055] This utility model also provides a multi-functional water dispenser, including the water system of any of the above technical solutions. This multi-functional water dispenser integrates four drinking modes: room temperature, hot water, cold water, and sparkling water, replacing multiple devices such as traditional water dispensers, ice makers, and sparkling water machines. Operation is extremely simple; users can switch water types using a single faucet 46 without operating multiple devices. It occupies zero space; all components can be hidden under kitchen cabinets, with only the faucet 46 exposed on the countertop, completely solving the problem of traditional countertop water purifiers occupying operating space.

[0056] 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.

[0057] 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 waterway system of a multi-functional water dispenser, characterized in that, include: Faucet; The water filtration system is equipped with a filtration assembly, and the inlet end of the filtration system is connected to the municipal water system. The hot water circuit is equipped with a heating component. The inlet end of the hot water circuit is connected to the first outlet of the filter water circuit, and the outlet end is connected to the inlet of the faucet. The cold water circuit is equipped with a refrigeration component. The inlet end of the cold water circuit is connected to the first outlet of the filter water circuit, and the outlet end is connected to the inlet of the faucet. The sparkling water circuit is equipped with a carbonation component. The inlet end of the sparkling water circuit is connected to the outlet end of the cold water circuit, and the outlet end is connected to the inlet of the faucet. The room temperature water circuit has its inlet end connected to the first outlet of the filter water circuit and its outlet end connected to the inlet of the faucet. The filtered water path, the hot water path, the cold water path, the aerated water path, and the room temperature water path are respectively equipped with a main solenoid valve, a hot water solenoid valve, a cold water solenoid valve, an aerated water solenoid valve, and a room temperature water solenoid valve to control their on / off states. The main solenoid valve is located near the inlet of the filtered water path. The refrigeration components include a cold water tank, an evaporator, a condenser, a compressor, and a dryer filter. The cold water tank is connected in series in the cold water circuit. A first water pump is connected in series in the cold water circuit between the outlet of the cold water tank and the faucet. The evaporator, condenser, compressor, and dryer filter are connected in series in sequence. The evaporator is located inside the cold water tank. The cold water solenoid valve is located on the inlet side of the cold water tank. The carbonation assembly includes: a carbonation tank disposed inside the cold water tank, the inlet of the carbonation tank being connected to the outlet of the cold water tank and a first booster pump being disposed between them, the outlet being connected to the inlet of the faucet, and the sparkling water solenoid valve being disposed on the outlet side of the carbonation tank; and a carbon dioxide cylinder whose outlet is connected to the carbonation tank.

2. The water system of the multifunctional water dispenser as described in claim 1, characterized in that, The heating assembly includes: a heater connected in series in the hot water circuit, a hot water solenoid valve being provided between the inlet of the heater and the first outlet of the filtered water circuit, and a second water pump being provided between the hot water solenoid valve and the inlet of the heater; and a preheating water tank, the inlet of which is connected to the outlet of the heater and the outlet of which is connected to the inlet of the second water pump, and a preheating water solenoid valve being provided at the outlet of the preheating water tank.

3. The water system of the multifunctional water dispenser as described in claim 2, characterized in that, The heater is equipped with a reversing solenoid valve at its outlet so that the water flowing through the heater can selectively flow into the faucet or the preheating water tank.

4. The water system of the multifunctional water dispenser as described in claim 3, characterized in that, A second booster pump is installed in the filtration water path between the filtration assembly and the main solenoid valve.

5. The water system of the multifunctional water dispenser as described in claim 4, characterized in that, Also includes: The return water pipeline has its inlet end connected to the inlet of the faucet and its outlet end connected to the inlet of the second booster pump. A return water solenoid valve is installed on the return water pipeline.

6. The water system of the multifunctional water dispenser as described in claim 5, characterized in that, The outlet of the preheated water tank is connected to the return water pipeline through a first purified water pipe, and a first solenoid valve is installed on the first purified water pipe. The hot water pipeline on the inlet side of the heater is connected to the return water pipeline through a second purified water pipe, and a second solenoid valve is installed on the second purified water pipe. The outlet of the chilled water tank is connected to the return water pipeline through a third purified water pipe, and a third solenoid valve is installed on the third purified water pipe.

7. The water system of the multifunctional water dispenser as described in claim 1, characterized in that, The second outlet of the filtered water path is connected to the sewer through a drain pipe, and a drain solenoid valve is installed on the drain pipe.

8. A multi-functional water dispenser, characterized in that, The water system of the multi-functional water dispenser as described in any one of claims 1 to 7.

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