Ice-bubbled water integrated module and refrigerated water making device

Abstract

The utility model discloses a kind of ice-bath sparkling water integrated module, belong to drinking water equipment technical field, mainly solve the time-consuming of traditional sparkling water machine preparation process step-by-step operation, refrigeration carbonization separation efficiency is low and the problem of tank ice blockage.The technical scheme points in that: refrigeration-carbonization integrated unit includes the ice water tank of built-in carbonization tank, ice water tank water inlet connects drinking water equipment water inlet system, carbonization tank water outlet is connected water terminal by direct valve;Carbonization tank outer wall coiled evaporator constitutes refrigeration circuit;Gas injection unit is connected carbonization tank by CO2 gas cylinder;Ice water tank outside is formed closed self-circulation waterway by first water pump, simultaneously through self-priming pump and check valve constitutes the one-way water flow passage of ice water tank to carbonization tank.The module is used in drinking water equipment to realize ice-bath sparkling water integration continuous supply.

Description

Technical Field

[0001] This utility model relates to the technical field of drinking water treatment equipment. More specifically, this utility model relates to an integrated module for chilled sparkling water and a cooling drinking water device. Background Technology

[0002] While the technology for preparing sparkling water for both home and commercial use has developed rapidly in recent years, existing equipment still faces significant technological bottlenecks. Traditional sparkling water machines often employ a separate design for the refrigeration module and the carbonation tank. Users must first manually inject drinking water into the refrigeration compartment to pre-cool it to a low temperature before transferring it to the carbonation tank for pressurization and carbonation. This step-by-step process takes more than 15 minutes, and the temperature of the low-temperature water can rise by 3-5°C during the transfer, resulting in a 20%-30% decrease in carbon dioxide solubility, which severely affects the density of the bubbles and the persistence of the flavor.

[0003] More importantly, the low-temperature carbonization process has an inherent physical contradiction: while the solubility of carbon dioxide theoretically increases when the water temperature drops below 4°C, the evaporator surface is prone to frost and ice buildup during actual refrigeration, especially when the carbonization tank is in direct contact with the refrigeration pipes, where the tank wall temperature is often below 0°C, causing localized freezing of the water inside the tank and blockage of the gas injection channels. The industry has attempted to integrate a coil-type evaporator into the carbonization tank, but this was abandoned due to an ice blockage failure rate exceeding 40%, and an external refrigeration water tank solution was adopted instead, sacrificing equipment integration and operational efficiency.

[0004] Existing technologies also propose refrigeration-carbonization synergistic systems, which attempt to integrate functions but still have fatal flaws: their carbonization tanks are placed outside the refrigeration chamber, relying on cold air convection for heat exchange, resulting in a refrigeration efficiency of less than 0.8 COP (coefficient of performance), and a pre-cooling time of more than 8 minutes; furthermore, pressure control becomes unstable during the gas injection stage due to water temperature fluctuations, and the gas escape rate reaches 35% when the bubble water is output. The market urgently needs an integrated module that can stably carbonize at a low temperature of 2℃ and achieve one-button operation.

[0005] Another challenge in household or commercial sparkling water production technology lies in the continuous supply mechanism. When users draw water multiple times, traditional equipment experiences fluctuations in carbon dioxide solubility due to a sudden drop in pressure in the carbonation tank, resulting in a reduction of over 50% in the gas content of the subsequently output sparkling water. Although some have proposed using a dual-tank alternating operation, the mechanical structure is too complex, increasing the number of potential failure points by three times, and it cannot resolve the thermal coupling design contradiction between the refrigeration system and the carbonation tank.

[0006] Therefore, the industry has long faced three major technological gaps: first, the physical conflict between the need for low-temperature carbonization and the risk of evaporator ice blockage; second, the systemic contradiction between the requirement for ease of operation and the necessity of step-by-step operation; and third, the technological gap in the stability of bubble water quality and the control of pressure fluctuations. These fundamental problems have hindered the realization of a truly one-button chilled sparkling water function. Utility Model Content

[0007] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0008] Another objective of this invention is to provide an integrated module for chilled sparkling water, which can achieve simultaneous integration of refrigeration and carbonization, enabling rapid one-click preparation of chilled sparkling water; the externally mounted evaporator and coiled carbonization tank design completely avoids the risk of ice blockage, and the closed self-circulating water circuit maintains a constant temperature carbonization environment of 2°C, greatly improving the density of the bubbles; the unidirectional pressure-stabilized water supply ensures continuous output of chilled sparkling water of constant quality.

[0009] To achieve these objectives and other advantages according to this utility model, an integrated module for chilled sparkling water is provided, comprising: a module disposed between the water inlet system and the water outlet terminal of a drinking water device, including: A refrigeration-carbonization integrated unit includes an ice water tank and a carbonization tank disposed inside the ice water tank; the inlet of the ice water tank is connected to the water inlet system through a first water inlet solenoid valve, and the outlet of the carbonization tank is connected to the water outlet terminal through a direct-acting valve; an evaporator is coiled around the outer wall of the carbonization tank, and the evaporator, compressor, condenser, dryer filter, and capillary tube constitute a refrigeration circuit. A gas injection unit, which includes a CO2 cylinder connected to the inlet of the carbonization canister; The ice water tank is externally connected to a closed-loop forced self-circulating water circuit via a first water pump; the ice water tank is connected to the carbonization tank via a self-priming pump and a one-way valve.

[0010] Preferably, the carbonization tank is equipped with a first liquid level probe, and the ice water tank is equipped with a first NTC temperature sensor and a liquid level switch.

[0011] Preferably, the chilled sparkling water integrated module further includes a collaborative control unit, which is communicatively connected to the first liquid level probe, the first NTC temperature sensor, the liquid level switch, the first water inlet solenoid valve, the refrigeration circuit, the first water pump, and the self-priming pump.

[0012] Preferably, the CO2 cylinder is connected to the inlet of the carbonization tank via a CO2 injection pipe. The CO2 cylinder can be either installed inside the drinking water equipment or connected externally. A pressure reducing valve is installed at the outlet of the CO2 cylinder, and the end of the CO2 injection pipe is machined into a tapered constriction channel, the top diameter of which is 2-3 times the bottom diameter. A stainless steel bearing seat is installed inside the top cover of the carbonization tank, and a ceramic bearing is mounted on the stainless steel bearing seat. A turbine structure, including a turbine shaft and inclined blades, is installed inside the carbonization tank via the ceramic bearing. The turbine shaft has a blade impeller, and the upper end of the turbine shaft is connected to the inclined blade impeller via a spline coupling. The shaft center of the inclined blade impeller is fixed to the ceramic bearing. The lower end of the turbine shaft is milled with a rectangular keyway, and a double-headed helical agitator is connected through the rectangular keyway. The clearance between the diameter of the double-headed helical agitator and the inner diameter of the carbonization tank is 1~2mm. The distance between the double-headed helical agitator and the bottom of the carbonization tank is 3~10cm. The outlet axis of the conical contraction channel is directly opposite the impeller shaft center, and the vertical distance between the bottom of the conical contraction channel and the rotation plane of the inclined blade impeller does not exceed 5mm.

[0013] Preferably, the inlet pipe of the first water pump is connected to the lower part or bottom of the ice water tank, and the outlet pipe is connected to the top of the ice water tank; the inlet pipe of the self-priming pump is connected to the lower part or bottom of the ice water tank, and the outlet pipe is connected to the top of the carbonization tank; and a one-way valve is provided on the outlet pipe of the self-priming pump; a pressure relief valve is provided on the carbonization tank through a pipe extending into the carbonization tank; the pipe extending into the carbonization tank can be an independent pipe, or a CO2 injection pipe, a one-way water flow path from the ice water tank to the carbonization tank, or a pipe between the outlet of the carbonization tank and the outlet terminal.

[0014] This utility model further claims a refrigerated drinking water device, which includes a water inlet system, a water outlet terminal, a hot water integrated module, a room temperature water module, an iced sparkling water integrated module as described in any one of claims 1 to 5, and a drainage module; the iced sparkling water integrated module is connected in parallel with the hot water integrated module and the room temperature water module between the water inlet system and the water outlet terminal.

[0015] Preferably, the integrated hot water module includes: A secondary water tank is connected to the water inlet system via a second inlet solenoid valve, and a one-way valve is provided between the second solenoid valve and the secondary water tank; a second liquid level probe is provided inside the secondary water tank. A hot water tank is connected to the outlet of an auxiliary water tank via a water inlet pipe and to a water outlet terminal via a second water pump. The hot water tank is equipped with a heating element and a second NTC temperature sensor. The hot water tank is equipped with an exhaust pipe that connects to the auxiliary water tank. A one-way valve and a drain solenoid valve are sequentially installed between the second water pump and the water outlet terminal. The second liquid level probe, the second NTC temperature sensor, the drain solenoid valve, the second water pump, and the collaborative control unit are connected in communication.

[0016] Preferably, the ambient temperature water module includes: The third inlet solenoid valve is installed between the inlet system and the outlet terminal, and a check valve is provided between the third inlet solenoid valve and the outlet terminal. The drainage module includes a third water pump, the inlet pipe of which is connected to the bottom of the cold water tank and the hot water tank respectively through the direct-acting valves of the cold water tank and the hot water tank, and the outlet pipe of the third water pump is connected to the drain outlet. The third inlet solenoid valve and the third pump are both connected to the collaborative control unit.

[0017] Preferably, the inlet pipe of the third water pump is also connected to the hot water tank via a direct-acting valve.

[0018] This utility model has at least the following beneficial effects: Firstly, this utility model achieves efficient and stable carbonization at a low temperature of 2℃ by deeply integrating the refrigeration-carbonization unit and designing the evaporator externally to wrap around the carbonization tank, thus completely avoiding the risk of water freezing inside the tank. Combined with the closed self-circulating water circuit of the ice water tank, it significantly improves the density and durability of the bubbles. Secondly, the gas injection unit and turbine structure described in this utility model work together to accelerate the airflow through the conical contraction channel and precisely guide the inclined blade impeller, driving the double-headed spiral stirring paddle to form strong turbulence. This significantly improves the CO2 dissolution efficiency and uniformity without increasing the size of the equipment, reduces gas waste, and ensures the quality of the sparkling water. Thirdly, the water circuit design described in this utility model (self-circulation of the first water pump and unidirectional water supply of the self-priming pump) combined with the pressure relief valve of the carbonization tank effectively maintains the stability of water temperature and pressure in the ice water tank and carbonization tank. Especially when continuously taking water, it can suppress the fluctuation of gas solubility caused by sudden pressure drop and ensure constant output quality. Fourth, the multifunctional drinking water device built based on the aforementioned chilled sparkling water integrated module integrates chilled sparkling water, hot water, and room temperature water modules in parallel, and shares a collaborative control unit and drainage module, realizing one-button switching of beverages, efficient drainage and self-cleaning, greatly improving the integration, ease of operation and hygiene and safety of the device; Fifth, the collaborative control unit described in this utility model, based on real-time data from liquid level probes, temperature sensors, etc., precisely links the inlet valve, refrigeration circuit, water pump, gas injection and other actuators to achieve intelligent collaborative control and fault protection throughout the entire process from precooling, water injection, carbonization to water intake, ensuring efficient, stable and reliable operation of the system.

[0019] 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

[0020] Figure 1 This is a schematic diagram of the water circuit during the water replenishment process of the carbonization tank in one of the technical solutions of this utility model; Figure 2 This is a schematic diagram of the gas and water circuits for the carbonization tank gas replenishment process in another technical solution of this utility model; Figure 3 This is a schematic diagram of the water circuit control process of the refrigeration circuit in another technical solution of this utility model; Figure 4 This is a schematic diagram of the water circuit for controlling the dispensing of bubble water in another technical solution of this utility model; Figure 5 This is a schematic diagram of the structure of the refrigerated drinking water device described in another technical solution of this utility model.

[0021] The system comprises: 1. Water inlet system; 2. Water outlet terminal; 3. Ice water tank; 4. Carbonization tank; 5. Evaporator; 6. Compressor; 7. Condenser; 8. Dryer filter; 9. Capillary tube; 10. First water inlet solenoid valve; 11. First water pump; 12. Self-priming pump; 13. CO2 cylinder; 14. Pressure reducing valve; 15. CO2 injection pipe; 16. First liquid level probe; 17. First NTC temperature sensor; 18. Liquid level switch; 19. Pressure relief valve; 20. Pressure switch; 21. Auxiliary water tank; 22. Hot water tank; 23. Heating element; 24. Second NTC temperature sensor; 25. Third water pump; 26. Second water pump; 27. Second water inlet solenoid valve; 28. Third water inlet solenoid valve; 29. ​​Drain outlet; 30. Second liquid level probe; 31. Fourth water pump. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] like Figures 1-4 As shown, this utility model provides an integrated module for chilled sparkling water, comprising: a module disposed between the water inlet system 1 and the water outlet terminal 2 of a drinking water device, including: The refrigeration-carbonization integrated unit includes an ice water tank 3 and a carbonization tank 4 disposed inside the ice water tank 3; the water inlet of the ice water tank 3 is connected to the water inlet system 1 through a first water inlet solenoid valve 10, and the water outlet of the carbonization tank 4 is connected to the water outlet terminal 2 through a direct-acting valve; an evaporator 5 is coiled around the outer wall of the carbonization tank 4, and the evaporator 5, together with the compressor 6, condenser 7, dryer filter 8, and capillary tube 9, constitute a refrigeration circuit; The gas injection unit includes a CO2 cylinder 13 connected to the gas inlet of the carbonization tank 4; The ice water tank 3 is externally connected to a closed-loop forced self-circulating water circuit via a first water pump 11; the ice water tank 3 is connected to the carbonization tank 4 via a one-way valve and a self-priming pump 12.

[0025] The above technical solution achieves rapid and stable one-click preparation of chilled sparkling water through the synergy of a refrigeration-carbonization integrated unit and a gas injection unit. The refrigeration unit uses an ice water tank 3 (capacity selectable from 3 to 10L) as the cold source container. Its inlet is connected to an external water source via a first inlet solenoid valve 10. In refrigerated drinking water equipment, the external water source is generally the water inlet system 1 of the drinking water equipment. The water inlet system 1 can be directly connected to a purified water source, or it can be connected to a clean water source and then further purified by built-in purification components. An evaporator 5 is tightly coiled around the outer wall of the built-in carbonization tank 4. The evaporator 5, together with the rotor compressor 6, air-cooled condenser 7, dryer filter 8, and capillary tube 9, forms a refrigeration circuit. The evaporator 5 must be completely flush with the outer wall of the carbonization tank 4 to maximize heat exchange efficiency. The gas injection unit uses a CO2 cylinder 13 connected to the top inlet of the carbonization tank 4 via a pressure reducing valve 14. Regarding water circuit control: the chilled water tank 3 forms a closed-loop water circuit through the first water pump 11, while a one-way flow path is established from the chilled water tank 3 to the carbonation tank 4 through self-priming and check valves. All pumps and valves should be installed near their corresponding interfaces to reduce pressure loss. The outlet of the carbonation tank 4 is connected to the water outlet terminal 2 via a direct-acting valve and water circuit to supply chilled sparkling water. This utility model involves multiple direct-acting valves and check valves, the locations of which are only shown in the accompanying drawings, and no distinction is made between direct-acting valves and check valves in the text.

[0026] Based on the above technical solution, a specific workflow of the chilled sparkling water integrated module provided by this utility model is as follows: Water from the drinking water system 1 flows into the ice water tank 3 through the first inlet solenoid valve 10 until it reaches the preset water level. Simultaneously or subsequently, the refrigeration circuit is activated: the compressor 6 starts, driving the refrigerant to flow sequentially through the condenser 7 for heat dissipation, through the dryer filter 8 and capillary tube 9 for pressure reduction, and finally into the evaporator 5 tightly coiled around the outer wall of the carbonization tank 4. Inside the evaporator 5, the refrigerant absorbs heat and evaporates, causing the carbonization tank 4 and the water inside to be cooled. To ensure a uniform water temperature and rapid cooling within the ice water tank 3, the first water pump 11 continuously operates, driving the water in the ice water tank 3 into a closed-loop forced self-circulation, with the water repeatedly flowing through the area where the evaporator 5 is located for efficient heat exchange. Simultaneously, to supply cold water to the carbonization tank 4 for carbonization, the self-priming pump 12 operates, pumping the cooled water from the ice water tank 3 into the carbonization tank 4 through a one-way valve. Carbon dioxide gas from the CO2 cylinder 13 is continuously injected into the carbonization tank 4 through a pipe connected to the inlet of the carbonization tank 4. Cold water and pressurized CO2 are thoroughly mixed and contacted within the carbonation tank 4, completing the carbonation process. When a user requests chilled sparkling water through the water outlet terminal 2 of the drinking water equipment, the user begins to dispense water, and the direct-acting valve connected to the outlet of the carbonation tank 4 opens. The pressure accumulated inside the carbonation tank 4 (maintained by the continuous injection of CO2 gas) pushes out the cooled and carbonated sparkling water, which is then transported through pipelines to the water outlet terminal 2 for the user to use. During the water dispensing process, the self-priming pump 12 starts in a timely manner according to the water consumption in the carbonation tank 4, replenishing the carbonation tank 4 with cold water from the ice water tank 3. A one-way valve ensures that water flows only from the ice water tank 3 to the carbonation tank 4, preventing backflow. After dispensing, the direct-acting valve closes. The refrigeration circuit and circulating water pump automatically start and stop according to the temperature status of the ice water tank 3 to maintain the water temperature within the low-temperature range, preparing for the next batch of chilled sparkling water.

[0027] According to the above technical solution, this utility model achieves energy coupling of refrigeration and carbonization by directly attaching the evaporator 5 to the carbonization tank 4: the heat absorbed by the evaporator 5 comes directly from the carbonization reaction system, saving at least 30% energy compared to the traditional split system, while improving carbonization efficiency, with a CO2 decomposition rate of over 90%. The closed-loop forced circulation water circuit eliminates the temperature stratification problem of traditional chillers, ensuring that the output water temperature is stable within ±0.5℃ and avoiding waste of cooling capacity. The modular integrated structure greatly simplifies the installation process, with all functional units (refrigeration / carbonization / circulation) concentrated in a single chassis, requiring only the removal of the quick-connect interface of the corresponding module for maintenance. The unidirectional water flow path design, combined with the self-priming pump 12, can automatically replenish liquid after the carbonization tank 4 is emptied, avoiding the risk of gas backflow. At the same time, the rapid response of the direct-acting valve ensures the instantaneous release of bubble pressure, maintaining carbonation saturation.

[0028] In one of the technical solutions, the carbonization tank 4 is provided with a first liquid level probe 16, and the ice water tank 3 is provided with a first NTC temperature sensor 17 and a liquid level switch 18.

[0029] The above technical solution adds three core sensing elements: a first liquid level probe 16 inside the carbonization tank 4 for real-time detection of the water level; a first NTC temperature sensor 17 inside the ice water tank 3 for continuous monitoring of water temperature changes; and a liquid level switch 18 inside the ice water tank 3 for identifying critical water level points. These sensors are directly embedded in their respective containers: the first liquid level probe 16 is vertically mounted on the inner wall of the carbonization tank 4, with its probe tip covering a preset minimum effective liquid level; the first NTC temperature sensor 17 is immersed in the water in the ice water tank 3 to obtain a representative water temperature; and the liquid level switch 18 is fixed to the side wall of the ice water tank 3, with its trigger points corresponding to the minimum working water level and the maximum safe water level, respectively. These sensors are connected to the control system of the drinking water equipment via electrical signals. Specifically, the first liquid level probe 16 outputs a binary signal (water present / water absent), the first NTC temperature sensor 17 outputs a continuous temperature value, and the liquid level switch 18 provides high and low water level switching signals. The three elements work together to provide a basis for decision-making regarding refrigeration start / stop, water circuit on / off, and gas injection, but the specific control strategy belongs to the system implementation level and is not specified in the claims.

[0030] According to the above technical solution, when the chilled sparkling water integrated module is running, the liquid level switch 18 of the ice water tank 3 first detects the water level: if it is lower than the minimum working water level, the first inlet solenoid valve 10 is activated to replenish water from the water inlet system 1 until the safe water level is reached and then it closes. The first NTC temperature sensor 17 synchronously monitors the water temperature: if it is higher than the set threshold (e.g., 5℃), the compressor 6 and the first water pump 11 are activated, driving the refrigeration circuit to run and starting the closed-loop forced self-circulation until the water temperature drops to the target low temperature (e.g., 2℃). During the water filling stage of the carbonization tank 4, the self-priming pump 12 operates according to the signal of the first liquid level probe 16: when the probe detects that there is no water in the tank, the self-priming pump 12 pumps cold water from the ice water tank 3 into the carbonization tank 4 through the one-way valve; when the probe detects that the tank is full, the self-priming pump 12 stops. The CO2 cylinder 13 continuously injects gas into the carbonization tank 4 to maintain the pressure inside the tank. When water is taken out, the direct-acting valve opens to output sparkling water; after water is taken out, the direct-acting valve closes. If water intake causes the water level in carbonization tank 4 to drop to the level detected by the first level probe 16, the water flow of the self-priming pump 12 will be triggered again.

[0031] The added sensing system in the above technical solution significantly improves the automation and reliability of the module: the first liquid level probe 16 directly monitors the liquid level of the carbonization tank 4, ensuring precise and controllable water injection and avoiding over- or under-injection caused by traditional time control or pressure estimation; the first NTC temperature sensor 17 realizes closed-loop water temperature management, preventing excessive cooling energy waste and ensuring that the output sparkling water is always in the optimal low temperature range (2~5℃), improving carbonization efficiency and taste. The dual protection mechanism of the liquid level switch 18 can prevent the ice water tank 3 from burning dry or overflowing: low water level triggers timely water replenishment to ensure continuous system operation, and high water level shut-off eliminates the risk of overflow. The synergy of these three components ensures that actions such as refrigeration start-up and shutdown, water circuit opening and closing, and gas injection strictly rely on real-time feedback of physical quantities, resulting in a lower failure rate than pure time-sequence control, while avoiding the problem of decreased CO2 solubility caused by water temperature fluctuations in low-temperature carbonization.

[0032] In one of the technical solutions, the chilled sparkling water integrated module also includes a collaborative control unit, which is connected to the first liquid level probe 16, the first NTC temperature sensor 17, the liquid level switch 18, the first water inlet solenoid valve 10, the refrigeration circuit, the first water pump 11, and the self-priming pump 12.

[0033] The above technical solution further introduces a collaborative control unit, which establishes communication connections with all key sensors and actuators through electrical circuits. Specifically, this includes the first liquid level probe 16 in the carbonization tank 4, the first NTC temperature sensor 17 and liquid level switch 18 in the ice water tank 3, and the actuators: the first inlet solenoid valve 10, the refrigeration circuit (including compressor 6, condenser 7, etc.), the first water pump 11, and the self-priming pump 12. The collaborative control unit acts as a central decision-making node, receiving sensor data (water level status, temperature value) in real time and outputting commands to control the start and stop of each actuator. The collaborative control unit also implements a signal-action mapping relationship through preset programs, such as the low water level signal from the liquid level switch 18 triggering the opening of the first inlet solenoid valve 10, and the over-threshold signal from the first NTC temperature sensor 17 triggering the start of the refrigeration circuit. Its physical carrier can be an embedded controller, installed in the module's electrical compartment, and all connecting wiring harnesses must meet the IPX4 waterproof rating to adapt to the drinking water equipment environment.

[0034] According to the above technical solution, when the chilled sparkling water integrated module is running, the collaborative control unit collects the signal from the liquid level switch 18 in real time: if the water level in the chilled water tank 3 is insufficient, the first inlet solenoid valve 10 is immediately opened to replenish water to a safe level. Simultaneously, the data from the first NTC temperature sensor 17 is read: if the water temperature exceeds the set range, the compressor 6 and the first water pump 11 are started to drive the refrigeration circuit and maintain a closed-loop forced self-circulation until the water temperature returns to the target range. During the water filling process of the carbonization tank 4, the unit continuously monitors the status of the first liquid level probe 16: when a water shortage is detected, the self-priming pump 12 is activated, and cold water from the chilled water tank 3 is injected into the carbonization tank 4 through a one-way valve; the pump stops immediately after the probe detects that the tank is full. During water intake, the direct-acting valve opens to output sparkling water; if the probe detects a water shortage again, the water filling process is retried. Throughout the process, the CO2 cylinder 13 continuously supplies gas to maintain the carbonization pressure, while the collaborative control unit dynamically coordinates the refrigeration, circulation, and water filling actions to ensure seamless connection between each stage.

[0035] According to the above technical solution, the collaborative control unit is configured to execute a specific preset program: When the first NTC temperature sensor 17 detects that the water temperature in the ice water tank 3 is ≥5℃, the refrigeration circuit and the first water pump 11 are started to eliminate temperature stratification and reduce the water temperature to ≤2℃ through the closed-loop forced self-circulating water circuit. When the first liquid level probe 16 detects a lack of water and the liquid level switch 18 detects a low water level with water, the self-priming pump 12 is started to pre-cool water and inject it into the carbonization tank 4. When the level switch 18 detects that there is no water at the high water level, it opens the first water inlet solenoid valve 10 until the level switch 18 detects that there is water at the high water level, then closes the first water inlet solenoid valve 10.

[0036] According to the above technical solution, the collaborative control unit, by centrally processing multi-sensor data and linking it with the actuators, completely eliminates response delays or action conflicts caused by discrete control. For example, the closed-loop control of the level switch 18 and the first inlet solenoid valve 10 can prevent overflow / dry running of the ice water tank 3; the real-time linkage between the first NTC temperature sensor 17 and the refrigeration circuit greatly reduces water temperature fluctuations, ensuring stable carbonization efficiency. The operation of the self-priming pump 12 strictly relies on the real-time feedback of the first level probe 16 to avoid the risk of abnormal pressure caused by overfilling of the carbonization tank 4 or gas backflow caused by insufficient water injection. At the same time, the strong correlation between the start / stop of the refrigeration circuit and the water temperature prevents damage from frequent start / stop of the compressor 6 and reduces ineffective refrigeration energy consumption. Ultimately, it achieves automated collaboration of the entire process of refrigeration-water injection-carbonization-output under one-button water dispensing operation, achieving the core goal of simple and efficient operation.

[0037] In one technical solution, a CO2 cylinder 13 is connected to the inlet of a carbonization tank 4 via a CO2 injection pipe 15. The CO2 cylinder 13 can be a cylinder installed inside the drinking water equipment or an external cylinder. A pressure reducing valve 14 is provided at the outlet of the CO2 cylinder 13, and the end of the CO2 injection pipe 15 is machined into a tapered constriction channel. The top diameter of the tapered constriction channel is 2-3 times the bottom diameter. A stainless steel bearing seat is provided inside the top cover of the carbonization tank 4, and a ceramic bearing is mounted on the stainless steel bearing seat. A turbine structure is installed inside the carbonization tank 4 via the ceramic bearing. The structure includes a turbine shaft and an inclined blade impeller. The upper end of the turbine shaft is connected to the inclined blade impeller via a spline coupling, and the axis of the inclined blade impeller is fixed to the ceramic bearing. The lower end of the turbine shaft is milled with a rectangular keyway, and a double-headed helical agitator is connected through the rectangular keyway. The clearance between the diameter of the double-headed helical agitator and the inner diameter of the carbonization tank 4 is 1~2mm, and the distance between the double-headed helical agitator and the bottom of the carbonization tank 4 is 3~10cm. The outlet axis of the conical contraction channel is directly opposite the impeller axis, and the vertical distance between the bottom of the conical contraction channel and the rotation plane of the inclined blade impeller does not exceed 5mm.

[0038] The above technical solution further optimizes the internal structure of the gas injection unit and the carbonization tank 4. The CO2 cylinder 13, after passing through the pressure reducing valve 14, is connected to the inlet of the carbonization tank 4 via CO2 injection. The cylinder can be built into the water dispenser (generally for household use) or externally connected (generally for commercial or enterprise use), depending on the size or application scenario of the water dispenser. The end of the CO2 injection pipe 15 is machined into a conical converging channel, with the top diameter of the conical converging channel designed to be 2-3 times the bottom diameter, forming a gradually narrowing airflow acceleration structure. A stainless steel bearing seat is fixed inside the top cover of the carbonization tank 4, on which a ceramic bearing is embedded. The turbine structure is suspended inside the tank via this bearing, including an upper inclined blade impeller (connected to the turbine shaft via a spline coupling) and a lower double-headed spiral agitator (the gap between the impeller diameter and the inner wall of the tank is strictly controlled to be 1-2 mm). The agitator is installed 3-10 cm above the bottom of the tank, and the outlet axis of the conical converging channel is precisely aligned with the impeller shaft center, with the vertical distance between the outlet and the impeller rotation plane ≤ 5 mm, ensuring that the high-speed airflow directly impacts the impeller surface.

[0039] According to the above technical solution, after the CO2 gas is pressurized by the pressure reducing valve 14, it enters the conical contraction channel and is accelerated. The high-speed airflow is ejected from the bottom of the channel and vertically impacts the curved surface of the inclined blade impeller. The kinetic energy of the airflow drives the impeller to rotate the turbine shaft through the spline coupling, and then through the rectangular keyway at the lower end of the shaft, the double-headed helical agitator rotates synchronously in the carbonization tank 4. The agitator blades rotate close to the tank wall with an extremely narrow gap of 1~2mm, generating a strong shear force on the mixture of cold water and CO2, forming a downward spiral vortex. During this process, the gas is broken into micron-sized bubbles by the high-speed rotating agitator and the residence time is extended by the vortex constraint, ensuring the fineness of the output bubble water; at the same time, the double-headed helical structure drives the water flow from the top of the tank to the bottom of the tank, ensuring full contact between the low-temperature water and the bubbles. The refrigeration and water injection processes managed by the co-control unit operate normally, while the spontaneous operation of the turbine-agitation system only relies on the physical driving force of CO2 injection, without the need for additional control signals or energy input.

[0040] According to the above technical solution, the conical contraction channel significantly enhances the driving torque on the impeller through airflow acceleration, enabling the turbine to start even under low pressure and reducing dependence on the gas cylinder pressure. The ceramic bearings maintain zero corrosion and wear in low-temperature carbonic acid environments, ensuring a long service life, and the spline coupling eliminates transmission slippage, ensuring 100% kinetic energy is transferred to the stirring system. The narrow-gap design of the double-headed helical impeller generates a high-intensity shear flow field, greatly reducing the CO2 bubble diameter and increasing the dissolution rate by at least 40%. Its installation height of 3-10cm from the tank bottom avoids sediment accumulation and ensures that the water at the bottom of the tank participates in circulation. The integrated turbine-stirring structure reuses the energy from the CO2 injection process as a hybrid power source, achieving the core goal of improving sparkling water quality—producing finer and longer-lasting bubbles with a carbonation saturation of over 90%—while saving energy and protecting the environment.

[0041] In one of the technical solutions, the inlet pipe of the first water pump 11 is connected to the lower part or bottom of the ice water tank 3, and the outlet pipe is connected to the top of the ice water tank 3. The inlet pipe of the self-priming pump 12 is connected to the lower part or bottom of the ice water tank 3, and the outlet pipe is connected to the top of the carbonization tank 4. A one-way valve is provided on the water pipe of the self-priming pump 12. A pressure relief valve 19 is provided on the carbonization tank 4 through a pipe extending into the carbonization tank 4. The pipe extending into the carbonization tank 4 can be an independent pipe, or it can be a CO2 injection pipe 15, a one-way water flow path from the ice water tank 3 to the carbonization tank 4, or a pipe between the outlet of the carbonization tank 4 and the outlet terminal 2. The inlet pipe of the first water pump 11 is connected to the lower part or bottom of the ice water tank 3, preferably to the bottom of the ice water tank 3, to ensure the extraction of water from the low-temperature zone. The outlet pipe of the first water pump 11 is connected to the top of the ice water tank 3, forming a forced circulation path from bottom to top to eliminate temperature stratification. The self-priming pump 12 also draws water from the lower part or bottom of the ice water tank 3 (preferably from the bottom). The outlet pipe of the self-priming pump 12 is connected to the top of the carbonization tank 4 and is equipped with a one-way valve to prevent backflow, realizing top-level horizontal slow entry into the tank. The carbonization tank 4 is equipped with a pressure relief valve 19 through a pipe extending into the carbonization tank 4. This pipe can be designed for reuse, that is, directly using the CO2 injection pipe 15, the one-way water flow path from the ice water tank 3 to the carbonization tank 4 (the outlet pipe of the self-priming pump 12), or the pipe between the outlet of the carbonization tank 4 and the outlet terminal 2. Alternatively, an independent pipe can be set with an additional opening at the top of the carbonization tank 4 to ensure smooth pressure relief of the carbonization tank 4.

[0042] In summary, the working process of the integrated chilled sparkling water module provided by this utility model includes at least the following: like Figure 1 The water replenishment process for carbonization tank 4 is as follows: When the first level probe 16 detects a lack of water in carbonization tank 4 and the level switch 18 indicates a valid low water level in ice water tank 3 (water present), the co-control unit starts the self-priming pump 12 to inject cold water from ice water tank 3 into carbonization tank 4 through a one-way valve until the first level probe 16 detects a full water signal and then stops the pump. If the first level probe 16 detects a lack of water and the level switch 18 indicates an invalid low water level in ice water tank 3 (no water), the co-control unit first opens the first inlet solenoid valve 10 to inject purified external water into ice water tank 3; when the level switch 18 detects a valid low water level, the self-priming pump 12 is immediately triggered to fill carbonization tank 4 with water until the first level probe 16 detects a full water level and then stops the pump; when the level switch 18 detects a valid high water level, the first inlet solenoid valve 10 is simultaneously closed.

[0043] like Figure 2The gas replenishment process for carbonization tank 4 is as follows: CO2 gas is injected into carbonization tank 4 from the gas cylinder after being pressurized by pressure reducing valve 14, and then through a check valve and pressure switch 20. Gas injection automatically stops when the pressure inside the tank reaches the set pressure of pressure reducing valve 14. During water extraction, if the pressure in carbonization tank 4 falls below the set value of pressure reducing valve 14, gas is automatically replenished into the tank based on the pressure difference through pressure reducing valve 14 and the check valve until the pressure is rebalanced.

[0044] like Figure 3 The refrigeration circuit control process is as follows: The first NTC temperature sensor 17 monitors the water temperature of the ice water tank 3 in real time. When the detected temperature rises to 5°C, the co-control unit starts the compressor 6 and the first water pump 11 to drive the refrigeration circuit and maintain a closed-loop forced self-circulation. When the water temperature drops to 2°C, the compressor 6 and the first water pump 11 are immediately shut down. This temperature difference cycle ensures that the water is constantly in the optimal carbonization temperature range of 2~5°C.

[0045] like Figure 4 The sparkling water dispensing control process is as follows: When a user dispenses water, the co-control unit opens the direct-acting valve to output sparkling water. When water dispensing causes the liquid level in the carbonation tank 4 to drop to the level detected by the first level probe 16 (indicating a water shortage), the self-priming pump 12 automatically triggers the ice water tank 3 to replenish water until it is full and reset. After dispensing is completed, the direct-acting valve immediately closes. The water level in the ice water tank 3 is dynamically monitored by the level switch 18: if the high water level detection is invalid (water shortage), the first inlet solenoid valve 10 is opened to replenish water until the high water level is valid, and then the valve closes.

[0046] like Figure 5 This utility model further claims a cooling water dispenser, which includes a water inlet system 1, a water outlet terminal 2, a hot water integration module, a room temperature water module, an iced sparkling water integration module as described in any one of claims 1 to 5, and a drainage module; the iced sparkling water integration module is connected in parallel with the hot water integration module and the room temperature water module between the water inlet system 1 and the water outlet terminal 2.

[0047] This invention further constructs a complete architecture for a refrigerated water dispenser. It integrates the chilled sparkling water module, hot water module, and ambient temperature water module provided by this invention in parallel within the same device. All three are connected between the water inlet system 1 and the water outlet terminal 2 of the refrigerated water dispenser. It also includes a drainage module to handle residual water discharged from the pipes after use due to vacations or prolonged periods of non-use, or to discharge descaling water after descaling. The chilled sparkling water module, as an independent functional branch, has its core components such as the refrigeration circuit and carbonization tank 4 physically isolated from the hot water and ambient temperature water modules, sharing only the water input and water outlet terminal 2, ensuring functional independence.

[0048] According to the above technical solution, when the user selects the chilled sparkling water mode, the chilled sparkling water in carbonization tank 4 is output to water outlet terminal 2 through a direct-acting valve. If the user switches to hot water or room temperature water mode, the chilled sparkling water module is turned off, and the system switches to the corresponding module: the hot water module heats the water, and the room temperature water module supplies water directly. The switching between modes is physically isolated by the electronic valve of water outlet terminal 2 to prevent the mixing of water at different temperatures. The drainage module continuously processes residual water in the drain pipe after water is taken out due to vacation or long-term non-use, or discharges descaling water after descaling, such as draining water if the hot water module has scale buildup, keeping the system clean. The parallel architecture allows the chilled sparkling water, hot water, and room temperature water functions to be pre-cooled / pre-heated simultaneously, so users do not need to wait when switching modes, achieving zero-delay water intake. Each module is completely isolated to prevent cross-contamination (such as CO2 from sparkling water seeping into room temperature water), and the refrigerant circuit only serves the chilled sparkling water module, avoiding unnecessary energy consumption.

[0049] In one of the technical solutions, the integrated hot water module includes: A secondary water tank 21 is connected to the water inlet system 1 via a second inlet solenoid valve 27, and a check valve is provided between the second solenoid valve and the secondary water tank 21; a second liquid level probe 30 is provided inside the secondary water tank 21. A hot water tank 22 is connected to the outlet of an auxiliary water tank 21 via a water inlet pipe, and is also connected to a water outlet terminal 2 via a second water pump 26. The hot water tank 22 is equipped with a heating element 23 and a second NTC temperature sensor 24. The hot water tank 22 is equipped with an exhaust pipe that connects to the auxiliary water tank 21. A one-way valve and a drain solenoid valve are sequentially provided between the second water pump 26 and the water outlet terminal 2. The second liquid level probe 30, the second NTC temperature sensor 24, the drain solenoid valve, and the second water pump 26 are communicatively connected to the collaborative control unit.

[0050] The above technical solution discloses a refined structure of the hot water integrated module. The auxiliary water tank 21 is connected to a second inlet solenoid valve 27 (anti-backflow) via a pipe with a one-way valve, and a second liquid level probe 30 is installed inside to monitor the water level. The hot water tank 22 receives water from the auxiliary water tank 21 via an injection pipe, and has a built-in heating element 23 and a second NTC temperature sensor 24. Its top is connected to the auxiliary water tank 21 via an exhaust pipe to balance pressure and recover steam. The water outlet path is driven by a second water pump 26, and connects to the water outlet terminal 2 sequentially via a one-way valve and a drain solenoid valve. All key components (second liquid level probe 30, second NTC, drain solenoid valve, second water pump 26) are communicatively connected to the collaborative control unit, forming a closed-loop management system.

[0051] When the user selects the hot water mode, the co-control unit first checks the second liquid level probe 30: if the auxiliary water tank 21 is low on water, it opens the second inlet solenoid valve 27 to fill the tank with water. Water from the auxiliary water tank 21 flows into the hot water tank 22 through the inlet pipe, and the heating element 23 heats according to feedback from the second NTC temperature sensor 24: it starts heating when the temperature is below the set temperature and stops when the target temperature is reached. When the user takes water, the drain solenoid valve opens, and the second pump 26 pumps the hot water out through a one-way valve to prevent cold water backflow. During the process, the steam generated by heating is introduced into the auxiliary water tank 21 through the exhaust pipe for condensation and recovery, avoiding pressure buildup; when water intake stops, the exhaust pipe draws the steam from the top of the hot water tank 22 back to the auxiliary water tank 21, eliminating the risk of vacuum. The chilled sparkling water module and the room temperature water module are completely isolated in this mode, with only the hot water path activated.

[0052] According to the above technical solution, the auxiliary water tank 21 serves as a physical buffer zone, and together with the one-way valve, it completely isolates the risk of steam backflow into the water inlet system 1; the steam recovery design of the exhaust pipe simultaneously solves the hidden dangers of pressure accumulation and vacuum dry burning, thus improving safety compared to traditional open exhaust systems. The second NTC temperature sensor 24 achieves precise temperature control, avoiding energy waste from repeated heating; the second water pump 26, together with the discharge solenoid valve, enables instant hot water without the need for pre-draining cold water, saving waiting time compared to traditional gravity-fed water discharge.

[0053] In one of the technical solutions, the ambient temperature water module includes: The third inlet solenoid valve 28 is disposed between the inlet system 1 and the outlet terminal 2, and a check valve is provided between the third inlet solenoid valve 28 and the outlet terminal 2. The drainage module includes a third water pump 25. The inlet pipe of the third water pump 25 is connected to the bottom of the cold water tank and the hot water tank respectively through the direct-acting valves of the cold water tank and the hot water tank. The outlet pipe of the third water pump 25 is connected to the drain outlet 29. The third inlet solenoid valve 28 and the third water pump 25 are both connected to the collaborative control unit.

[0054] The above technical solution discloses a refined structure for a room temperature water module. The room temperature water module consists only of a third inlet solenoid valve 28 and a check valve connected in series, directly connecting the inlet system 1 and the outlet terminal 2, forming a zero-treatment direct-flow water path. (Drainage) The core of the module is the third water pump 25, whose inlet pipe is connected to the inlet pipe of the self-priming pump 12 (i.e., the water intake point of the ice water tank 3), and its outlet pipe is uniformly connected to the drain outlet 29. Figure 5In this process, the inlet pipe of the self-priming pump 12 is connected to the inlet pipes of the self-priming pump 12, the third water pump 25, and the pipeline between the outlet of the carbonization tank 4 and the outlet terminal 2 via different branches. When the inlet pipe of the self-priming pump 12 is connected to the pipeline between the outlet of the carbonization tank 4 and the outlet terminal 2 via a branch, a check valve for the fourth water pump 31 needs to be installed. The third inlet solenoid valve 28 and the third water pump 25 are both connected to a coordinated control unit for centralized scheduling. For example... Figure 5 As shown, in order to simplify the water circuit, the room temperature water circuit is directly connected to the inlet pipe of the third outlet pump. The room temperature water circuit needs to be connected to the outlet terminal 2 through the outlet of carbonization tank 4 after the check valve.

[0055] When the user selects the ambient temperature water mode, the co-control unit opens the third inlet solenoid valve 28. Water from the inlet system 1 is delivered to the outlet terminal 2 via a one-way valve (anti-backflow), without any storage or temperature intervention throughout the process. The drainage process is actively triggered by the co-control unit or started on a timer: when the chilled water tank 3 needs to be cleaned, the third pump 25 and the automatic valve at the bottom of the chilled water tank are switched on to pump the residual water to the external drain outlet 29. During the drainage process, the corresponding functional module (chilled sparkling water) is temporarily suspended.

[0056] In one of the technical solutions, the inlet pipe of the third water pump 25 is also connected to the hot water tank 22 through a direct-acting valve. When the hot water tank 22 needs to be cleaned, it is discharged to the external drain outlet 29 through the third water pump 25. During the drainage, the corresponding functional module (hot water) is suspended.

[0057] The number of devices and processing capacity described herein are for simplification. Applications, modifications, and variations of the present invention's integrated chilled sparkling water module and the refrigerated drinking water equipment including the integrated chilled sparkling water module will be readily apparent to those skilled in the art.

[0058] 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. An integrated module for chilled sparkling water, characterized in that, It is installed between the water inlet system and the water outlet terminal of the drinking water equipment, including: A refrigeration-carbonization integrated unit includes an ice water tank and a carbonization tank disposed inside the ice water tank; the inlet of the ice water tank is connected to the water inlet system through a first water inlet solenoid valve, and the outlet of the carbonization tank is connected to the water outlet terminal through a direct-acting valve; an evaporator is coiled around the outer wall of the carbonization tank, and the evaporator, compressor, condenser, dryer filter, and capillary tube constitute a refrigeration circuit. A gas injection unit, which includes a CO2 cylinder connected to the inlet of the carbonization canister; The ice water tank is externally connected to a closed-loop forced self-circulating water circuit via a first water pump; the ice water tank is connected to the carbonization tank via a self-priming pump and a one-way valve.

2. The integrated module for chilled sparkling water as described in claim 1, characterized in that, The carbonization tank is equipped with a first liquid level probe, and the ice water tank is equipped with a first NTC temperature sensor and a liquid level switch.

3. The integrated module for chilled sparkling water as described in claim 2, characterized in that, It also includes a collaborative control unit, which is communicatively connected to the first liquid level probe, the first NTC temperature sensor, the liquid level switch, the first water inlet solenoid valve, the refrigeration circuit, the first water pump, and the self-priming pump.

4. The integrated module for chilled sparkling water as described in claim 3, characterized in that, A CO2 cylinder is connected to the inlet of a carbonization tank via a CO2 injection pipe. The CO2 cylinder can be either installed inside the drinking water equipment or connected externally. A pressure-reducing valve is installed at the outlet of the CO2 cylinder, and the end of the CO2 injection pipe is machined into a tapered constriction channel, the top diameter of which is 2-3 times the bottom diameter. A stainless steel bearing seat is located inside the top cover of the carbonization tank, and a ceramic bearing is mounted on the stainless steel bearing seat. A turbine structure, including a turbine shaft and inclined blades, is installed inside the carbonization tank via the ceramic bearing. The turbine shaft has an upper end connected to the inclined blade impeller via a spline coupling, and the axis of the inclined blade impeller is fixed to the ceramic bearing. The lower end of the turbine shaft is milled with a rectangular keyway, and a double-headed helical agitator is connected through the rectangular keyway. The clearance between the diameter of the double-headed helical agitator and the inner diameter of the carbonization tank is 1-2 mm, and the distance between the double-headed helical agitator and the bottom of the carbonization tank is 3-10 cm. The outlet axis of the conical contraction channel is directly opposite the impeller axis, and the vertical distance between the bottom of the conical contraction channel and the plane of rotation of the inclined blade impeller does not exceed 5 mm.

5. The integrated module for chilled sparkling water as described in claim 3, characterized in that, The inlet pipe of the first water pump is connected to the lower part or bottom of the ice water tank, and the outlet pipe is connected to the top of the ice water tank. The inlet pipe of the self-priming pump is connected to the lower part or bottom of the ice water tank, and the outlet pipe is connected to the top of the carbonization tank. A one-way valve is provided on the outlet pipe of the self-priming pump. A pressure relief valve is provided on the carbonization tank through a pipe extending into the carbonization tank. The pipe extending into the carbonization tank can be an independent pipe, or it can be a CO2 injection pipe, a one-way water flow path from the ice water tank to the carbonization tank, or a pipe between the outlet of the carbonization tank and the outlet terminal.

6. A refrigerated water dispenser, characterized in that, It includes a water inlet system, a water outlet terminal, a hot water integrated module, a room temperature water module, an iced sparkling water integrated module as described in any one of claims 1 to 5, and a drainage module; the iced sparkling water integrated module is connected in parallel with the hot water integrated module and the room temperature water module between the water inlet system and the water outlet terminal.

7. The refrigerated water dispenser as described in claim 6, characterized in that, The integrated hot water module includes: A secondary water tank is connected to the water inlet system via a second inlet solenoid valve, and a one-way valve is provided between the second solenoid valve and the secondary water tank; a second liquid level probe is provided inside the secondary water tank. A hot water tank is connected to the outlet of an auxiliary water tank via a water inlet pipe and to a water outlet terminal via a second water pump. The hot water tank is equipped with a heating element and a second NTC temperature sensor. The hot water tank is equipped with an exhaust pipe that connects to the auxiliary water tank. A one-way valve and a drain solenoid valve are sequentially installed between the second water pump and the water outlet terminal. The second liquid level probe, the second NTC temperature sensor, the drain solenoid valve, the second water pump, and the collaborative control unit are connected in communication.

8. The refrigerated water dispenser as described in claim 7, characterized in that, The ambient temperature water module includes: The third inlet solenoid valve is installed between the inlet system and the outlet terminal, and a check valve is provided between the third inlet solenoid valve and the outlet terminal. The drainage module includes a third water pump, the inlet pipe of which is connected to the bottom of the cold water tank and the hot water tank respectively through the direct-acting valves of the cold water tank and the hot water tank, and the outlet pipe of the third water pump is connected to the drain outlet. The third inlet solenoid valve and the third pump are both connected to the collaborative control unit.

9. The refrigerated water dispenser as described in claim 8, characterized in that, The inlet pipe of the third water pump is also connected to the hot water tank via a direct-acting valve.

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