Cooked water preparation device and method

Abstract

The invention discloses a boiled water preparation device and method, and aims to solve the technical problems of high energy consumption, low heat exchange efficiency, waste heat waste and fast storage temperature drop in existing boiled water preparation. According to the device, dynamic preheating of'temperature priority 'is achieved through an intelligent heat exchange unit (a solar heat exchange water tank and a waste heat recovery water tank), heat is recycled in combination with a closed-loop waste heat circulation unit, and the design of double-way shunt activation and waste heat heat preservation water storage is matched, so that energy consumption is reduced by 35%-55%, meanwhile, small-molecular-group boiled water is prepared, 24-48-hour long-acting heat preservation is achieved, and energy conservation and emission reduction are achieved. The device and the method can be used for manufacturing the boiled water meeting the healthy drinking standard of a human body, meet the policy of energy conservation and emission reduction, and are suitable for updating and reconstruction of filling water and direct drinking water supply enterprises.

Description

Technical Field

[0001] This invention relates to the field of boiled water preparation technology, specifically to a boiled water preparation device and method, which is particularly suitable for scenarios with high requirements for energy consumption, water quality and storage stability. Background Technology

[0002] In this article, "raw water" refers to natural water sources that have not undergone any treatment, such as river water, lake water, and groundwater, or water that has undergone preliminary filtration but does not meet drinking water standards and is not suitable for direct consumption. "Cooked water" refers to "safe water" that has been heated and boiled to meet drinking hygiene standards; common boiled water is a typical example of cooked water.

[0003] Current boiled water preparation equipment has significant technical shortcomings in energy utilization and process design, making it difficult to simultaneously achieve water quality optimization and energy conservation. Firstly, the heat exchange logic is rigid, resulting in significant energy waste. Existing systems often employ a fixed raw water preheating sequence (e.g., always starting with the solar water exchange tank 2) without a dynamic adjustment mechanism. When the temperature of the solar water exchange tank 2 is lower than that of the waste heat recovery tank, the raw water first passes through the low-temperature tank, and the temperature difference before entering the high-temperature tank decreases. This leads to insufficient utilization of the heat in the high-temperature tank, reducing preheating efficiency by 20%-30% and directly increasing the energy load of subsequent electric heating.

[0004] Secondly, the waste heat recovery system is incomplete, resulting in a high energy loss rate. When the electrically heated high-temperature hot water (80-90℃) enters the purification or activation stage, a large amount of sensible / latent heat is not effectively recovered; some recovery devices only achieve unidirectional heat exchange and do not build a circulation loop, so the heat in the waste heat recovery tank cannot be continuously replenished. When the waste heat is consumed, other energy sources must be relied upon, resulting in an energy utilization rate of less than 40%.

[0005] Third, the lack of parameter control leads to poor operational stability. In existing technologies, key aspects such as heat exchange sequence switching, waste heat diversion ratio, and circulation start-up and shutdown often lack quantitative control thresholds and rely on manual experience for adjustment. This can easily lead to problems such as "waste heat overload causing excessively high water tank temperature" or "diversion imbalance causing fluctuations in activation water temperature." At the same time, the residence time and temperature of the activated water process are not clearly defined, affecting the water quality optimization effect.

[0006] To address the aforementioned shortcomings, a boiled water preparation technology with quantitative parameter control, closed-loop waste heat circulation, and intelligent heat exchange logic needs to be designed to solve the problems of energy consumption and stability. Summary of the Invention

[0007] The core objective of this invention is to provide a boiled water preparation device and method. By clearly defining and quantifying control parameters, optimizing waste heat circulation logic, and implementing a dual-path activation collaborative design, the invention achieves low-energy consumption and high-stability boiled water preparation. The boiled water preparation device includes: a raw water inlet unit, a preheating unit, a heating unit, a waste heat circulation unit, an activation unit, a heat preservation and storage unit, and a controller. Each unit operates in series or in parallel via pipelines and is electrically connected to the controller through sensors, pumps, electric heaters, and solenoid valves installed therein. The raw water inlet unit includes an inlet pipe and a first solenoid valve. The first solenoid valve is connected in series with the inlet pipe. The end of the inlet pipe is connected to the preheating unit through a reversing valve group and a pipe. A water quality exchange processor is installed on the inlet pipe to filter out solid impurities in the raw water and adjust the distribution of mineral elements in the water. The preheating unit includes a solar water exchange tank with a built-in first coil, a waste heat recovery tank with a built-in second coil, and a reversing valve assembly. The solar water exchange tank is equipped with a solar collector panel. Temperature sensors are installed in both tanks. The reversing valve assembly includes a first electric three-way reversing valve at the inlet end and a second electric three-way reversing valve at the outlet end. The output end of the first electric three-way reversing valve is connected to the inlet ends of the first and second coils. The input end of the second electric three-way reversing valve is connected to the outlet ends of the first and second coils, and the output end is connected to the heating unit. The heating unit includes an electric heater, a second solenoid valve, a temperature sensor, and a pressure safety valve. The second solenoid valve and the electric heater are connected in series in the output pipeline of the second electric three-way reversing valve. The pressure safety valve has a start pressure of 0.7-0.9 MPa. The waste heat circulation unit includes a waste heat release water tank with a built-in third coil and a circulation pipeline equipped with a water pump. The waste heat release water tank is equipped with a temperature sensor and is connected to the waste heat recovery water tank through the circulation pipeline. The insulated water storage unit includes an insulated water tank with a built-in fourth coil, a water level sensor, and a water outlet valve. The inner wall of the insulated water tank is provided with a 50-80mm polyurethane insulation layer, and the internal space of the water tank outside the coil is a water storage chamber. The water outlet of the electric heater passes through the middle of the third coil and is divided into two paths by a diversion valve. One path passes through the rear of the third coil and the fourth coil in sequence to connect to the activation unit, and the other path is directly connected to the activation unit. The activation unit includes a small molecule cluster water activation module, and the water outlet is connected to the water storage chamber inside the insulated water tank or the water inlet pipe of the filling line.

[0008] Preferably, the walls of the solar water exchange tank, waste heat recovery tank, and waste heat release tank are all provided with a 30-50mm polyurethane insulation layer, and the first / second / third / fourth coils are 304 stainless steel spiral coils with a diameter of DN20-DN25.

[0009] Preferably, the temperature sensor has a temperature measurement range of 0-100℃ and an accuracy of ±0.5℃, and is a PT100 platinum resistance sensor. There are two sets of electric heaters, which are connected by pipes and valves.

[0010] Preferably, the small molecule cluster water activation module includes a vibration activation device or a magnetic field activation device with a magnetic field strength of 8000-12000Gs; the vibration activation device type includes low-frequency mechanical vibration type or ultrasonic activation type with power of 120-180W and frequency of 20-30kHz.

[0011] Preferably, the diversion valve is an electric proportional diversion valve, and the ratio of the two outlets can be adjusted within the range of 6:4 to 8:2, which is dynamically controlled by the controller based on the data from the second temperature sensor of the waste heat release water tank.

[0012] Furthermore, a water source heat pump is installed on the circulation pipeline to heat the circulating water in the pipeline, and the water pipe that provides the heat source for the evaporator of the water source heat pump is connected to the tap water pipe or the water inlet pipe of the filling line.

[0013] Based on the same inventive concept, the present invention also provides a method for preparing boiled water, using the above-mentioned boiled water preparation apparatus, comprising the following steps: S1. The controller opens the first solenoid valve. The raw water passes through the water quality exchange processor installed on the inlet pipe to filter out solid impurities and adjust the distribution of mineral elements in the water. Then it enters the preheating unit through the reversing valve group. The controller collects data from the two first temperature sensors in real time to obtain the temperature T1 of the solar water exchange tank and the temperature T2 of the waste heat recovery tank, and sets the temperature judgment threshold ΔT=3℃. If T2-T1≥ΔT: Control the first reversing valve to connect "water inlet pipe - first coil" and the second reversing valve to connect "second coil - heating unit". The raw water first exchanges heat through the first coil (heating up 15-30℃) and then exchanges heat through the second coil (heating up 8-20℃). If T1-T2≥ΔT: Control the switching of the reversing valve group, the raw water first exchanges heat through the second coil, and then exchanges heat through the first coil; If |T1-T2|<ΔT: the directional valve assembly does not perform a switching action; S2. After the raw water is preheated, it enters the electric heater and is heated to boiling. After boiling, the heating continues for 2-3 minutes, and then the electric heater is turned off. The high-temperature hot water released by the electric heater releases residual heat when it passes through the third coil. The residual heat outside the third coil is released into the water tank, causing the data T3 of the second temperature sensor to rise. There are two sets of electric heaters, which are connected by pipes and valves. Heating and unloading are carried out alternately. When T3-T2≥ΔT, start the air pump and water pump to drive the water outside the coil of the waste heat release tank and waste heat recovery tank to circulate the waste heat. When T3-T2<ΔT, the circulating water pump is turned off and circulation stops; S3. The hot water from the third coil is divided into two paths. One path flows into the fourth coil, exchanges heat with the boiled water in the storage chamber of the insulated water tank, and then enters the activation unit. The other path goes directly into the activation unit. The controller adjusts the ratio of the two water outlets through the electric proportional diversion valve based on the data T3 from the second temperature sensor in the waste heat release tank. S4. The two streams of water remain in the activation module for 10-30 seconds, and the large water molecule clusters are broken up by vibration to complete the preparation of boiled water; S5. The activated boiled water flows into the water storage chamber of the insulated water tank for later use. When the water level is ≤ 1 / 3 of the water storage chamber volume, the controller triggers a new round of water production. When the water level is ≥ 2 / 3 of the water storage chamber volume, the first solenoid valve is closed to stop the water intake.

[0014] Preferably, based on the second temperature sensor data T3 in the waste heat release water tank, the specific steps for adjusting the ratio of the two outlet waters via the electric proportional diversion valve are as follows: If T3 > 65℃: the adjustment ratio is 8:2 for the third coil branch and the direct activation branch, thereby increasing the waste heat recovery. If 50℃≤T3≤65℃: the adjustment ratio is 7:3 to maintain waste heat balance; If T3 < 50℃: adjust the ratio to 6:4 to reduce the amount of waste heat input.

[0015] Compared with existing technologies, the core advantages of this invention lie in quantitative parameter control and closed-loop energy utilization, with specific beneficial effects: 1. Maximize heat exchange efficiency and significantly reduce energy consumption: The innovative "temperature priority" intelligent heat exchange logic is adopted, in which the raw water always flows through the high-temperature water tank for heat exchange first, and then enters the low-temperature water tank, which improves the heat exchange efficiency by 40%-60% compared with the fixed process; at the same time, the waste heat circulation unit forms an energy closed loop to recover and utilize the waste heat of the hot water after electric heating, and the overall energy consumption is reduced by 35%-55% compared with the traditional device.

[0016] 2. Strong operational stability and adaptability to multiple scenarios: Solar energy and waste heat recovery work together to exchange heat, which can complement each other to deal with insufficient sunlight or fluctuations in waste heat supply, avoiding water production interruptions caused by reliance on a single energy source; intelligent control of the entire process eliminates the need for manual adjustment of the heat exchange sequence, making it suitable for unattended operation in different scenarios such as commercial or large enterprise applications.

[0017] 3. Dual optimization of water quality and storage experience: After boiling, the water is heated for another 2-3 minutes to ensure that the chlorine content meets drinking requirements and to prevent nitrates from being reduced to carcinogenic nitrites; the activated unit treats the boiled water into small molecule clusters, improving the quality of drinking water; the insulated water tank has a built-in fourth coil that uses waste heat to keep the stored water warm, avoiding extra energy consumption, while the insulation layer on the tank wall extends the heat preservation time to 24-48 hours, ensuring convenient access.

[0018] 4. Reasonable structural design and high safety: Each unit achieves isolated heat exchange between the water to be treated and the heat / cooling medium through coils, avoiding cross-contamination of the water; the electric heater and water tank are equipped with safety protection components to eliminate safety hazards such as pressure overload and dry burning. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the pipeline connections of each component of the boiled water preparation device in an embodiment of the present invention; The components include: 1. Solar collector panel; 2. Solar heat exchanger tank; 3. Waste heat recovery tank; 4. Waste heat release tank; 5. Insulated tank; 6. Electric heater; 7. Activation unit; 8. Water source heat pump; 9. First coil; 10. Second coil; 11. Third coil; 12. Fourth coil; 13. First solenoid valve; 14. Second solenoid valve; 15. First electric three-way reversing valve; 16. Second electric three-way reversing valve; 17. Electric proportional flow divider valve; 18. Water exchange processor; 19. Solar heat exchanger coil; 20. Circulation pipeline. Figure 2 This is a schematic diagram illustrating the operating principle of a water source heat pump in an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without innovative effort are within the scope of protection of the present invention.

[0021] The following details the structure of a boiled water preparation device provided by the present invention and the method steps for preparing boiled water using the device.

[0022] 1. Device structure and core parameter design Each unit of this device achieves efficient operation through precise parameter matching and coordinated control. The key structure and quantitative design are as follows: The raw water inlet unit includes an inlet pipe and a first solenoid valve 13. The first solenoid valve 13 is connected in series with the inlet pipe. The end of the inlet pipe is connected to the preheating unit through a reversing valve group and a pipe. A water quality exchange processor 18 is provided on the inlet pipe to filter out solid impurities in the raw water and adjust the distribution of mineral elements in the water. The preheating unit includes a solar heat exchange tank 2 with a built-in first coil 9, a waste heat recovery tank 3 with a built-in second coil 10, and a reversing valve assembly. The solar heat exchange coil 19 is connected to the solar collector plate 1 outside the solar heat exchange tank 2 through pipe fittings. Temperature sensors are installed in both tanks. The reversing valve assembly includes a first electric three-way reversing valve 15 at the inlet end and a second electric three-way reversing valve 16 at the outlet end. The output end of the first electric three-way reversing valve 15 is connected to the inlet ends of the first coil 9 and the second coil 10. The input end of the second electric three-way reversing valve 16 is connected to the outlet ends of the first coil 9 and the second coil 10, and the output end is connected to the heating unit. The heating unit includes an electric heater 6, a second solenoid valve 14, a temperature sensor, and a pressure safety valve. The second solenoid valve 14 and the electric heater 6 are connected in series in the output pipeline of the second electric three-way reversing valve 16. The pressure safety valve has a start pressure of 0.7-0.9 MPa. The waste heat circulation unit includes a waste heat release water tank 4 with a built-in third coil 11, a water pump and a circulation pipeline 20. The waste heat release water tank is equipped with a temperature sensor and is connected to the waste heat recovery water tank through the circulation pipeline 20. The water pump is connected in series to the circulation pipeline 20. The insulated water storage unit includes an insulated water tank 5 with a built-in fourth coil 12, a water level sensor, and a water outlet valve. The inner wall of the insulated water tank 5 is provided with a 50-80mm polyurethane insulation layer, and the internal space of the water tank outside the coil is a water storage chamber. The water outlet of the electric heater passes through the middle of the third coil 11 and is divided into two paths by an electric proportional diversion valve 17 (a type of diversion valve in the invention). One path passes through the rear of the third coil 11 and the fourth coil 12 and is connected to the activation unit 7. The other path is directly connected to the activation unit 7. The activation unit 7 includes a small molecule cluster water activation module, and the water outlet is connected to the water storage chamber inside the insulated water tank or the water inlet pipe of the filling line.

[0023] Intelligent heat exchange unit (core parametric design): Temperature judgment threshold ΔT: Set ΔT=3℃. When the temperature difference between the two water tanks reaches this value, the sequence switching is initiated to avoid pipeline pressure fluctuations caused by frequent reversals due to small temperature differences, while ensuring that heat exchange always proceeds at the "maximum temperature difference". For example, when the temperature in solar water exchange tank 2 is 55℃ and the temperature in waste heat recovery tank 3 is 51℃ (difference 4℃ ≥ 3℃), the raw water preferentially enters waste heat recovery tank 3, increasing the temperature rise of a single heat exchange by 15%-20% compared to a fixed process.

[0024] Coil specifications: The first / second / third / fourth coils and the solar heat exchange coil 19 placed in the solar water exchange tank 2 all adopt DN20-DN25 stainless steel corrugated spiral coils. The spiral structure of the coils extends the residence time of raw water in the coils to 20-30 seconds, and the heat exchange area is increased by more than 3 times compared with straight pipes, with a heat exchange efficiency of more than 85%. The stainless steel material has both high thermal conductivity and corrosion resistance, making it suitable for long-term water circulation scenarios.

[0025] Thermal insulation design: The walls of the solar water exchange tank 2, waste heat recovery tank 3, and waste heat release tank 4 are equipped with a 30-50mm polyurethane insulation layer with a thermal conductivity of ≤0.024W / (m·K), which can control the heat loss rate of the water tank to 0.5-1℃ / h and reduce energy consumption.

[0026] Electric heater 6: It adopts a 15kW stainless steel heating tube and is equipped with a PT100 sensor with a temperature measurement accuracy of ±0.5℃. After heating to boiling, it continues to heat for 2-3 minutes, then stops heating and pumps the boiled water into the third coil 11.

[0027] Safety protection: The pressure safety valve is set with a starting pressure of 0.7-0.9MPa, which matches the municipal water supply pressure (0.2-0.4MPa) and the pressure rise after heating, eliminating the risk of overpressure; at the same time, the electric heater 6 has a built-in dry-burn protection, which automatically cuts off the power when the liquid level is lower than the heating tube.

[0028] Waste heat recycling unit (closed-loop quantitative control): Electric proportional flow divider valve 17: The output water ratio can be dynamically adjusted within the range of 6:4-8:2. The controller automatically adjusts based on the T3 data of the waste heat release water tank: when T3 is low, the flow rate of the coil branch is increased to improve the waste heat recovery; when T3 is high, the flow rate is reduced to prevent the water tank from overheating. This design keeps the waste heat recovery efficiency stable at 70%-80%.

[0029] Circulation parameters: Circulating water pump set to 4m 3 The circulation flow rate is set at / h, matching the volumes of the two water tanks (740L waste heat release tank and 740L waste heat recovery tank), ensuring that the time for one water circulation cycle is controlled within 5-8 minutes to achieve rapid heat transfer; the air pump starts for 5-10 seconds to break the air resistance in the pipeline and avoid the circulating water pump running dry.

[0030] A water source heat pump 8 is installed on the circulation pipeline 20 to heat the circulating water in the pipeline. The water pipe that provides the heat source for the evaporator of the water source heat pump is connected to the tap water pipe or the water inlet pipe of the filling line.

[0031] Activation Unit 7 (Water Quality Optimization Parameters): Activation module parameters: If ultrasonic activation is used, set the power to 120-180W and the frequency to 20-30kHz. This parameter range can effectively break down water molecule clusters (large molecular clusters composed of 10-15 molecules into small molecular clusters of 5-8 molecules) without damaging the water molecule structure. If magnetic field activation is used, the magnetic field strength is controlled at 8000-12000Gs to enhance the activation effect.

[0032] Activation residence time: By matching the pipe diameter (DN20) and flow rate (1.0-1.5L / min), the residence time of water in the activation module is controlled at 10-30 seconds to ensure sufficient activation. After testing, the nuclear magnetic resonance half width at half maximum (17O-NMR) of the activated water can be reduced from 120-150Hz to 60-80Hz, meeting the small molecule cluster water standard.

[0033] Insulated water storage unit (long-lasting insulation): Insulated water tank 5: The inner wall is equipped with a 50-80mm polyurethane insulation layer. Combined with the residual heat exchange of the fourth coil 12, the temperature drop rate of the boiled water in the water storage chamber is ≤1℃ / h, and the heat preservation time can reach 24-48 hours. It can maintain a suitable drinking temperature of 40-50℃ without additional heating.

[0034] Water level control threshold: Set a low water level threshold (1 / 3 of the volume) and a high water level threshold (2 / 3 of the volume). When the water level is below the low threshold, water will be produced automatically. When the water level is above the high threshold, water intake will stop to prevent the water tank from overflowing or drying out, while ensuring a continuous supply of boiled water.

[0035] 2. Preparation method and quantitative control process This method achieves intelligent and stable operation of the entire process through multi-stage quantitative parameter control. The specific steps and control logic are as follows: 1. Intelligent preheating of raw water (temperature difference threshold control): The controller collects real-time data from the two primary temperature sensors, T1 (solar water exchange tank 2) and T2 (waste heat recovery tank 3), using ΔT=3℃ as the core criterion for judgment. When T1-T2≥3℃, the reversing valve group switches to the "raw water → first coil 9 (solar water exchanger 2) → second coil 10 (waste heat recovery tank 3)" path. For example, if the initial temperature of the raw water is 20℃, it will rise to 47℃ after heat exchange in the 55℃ solar water exchanger 2 (temperature increase of 25℃), and then rise to 50℃ after heat exchange in the 51℃ waste heat recovery tank (temperature increase of 3℃), for a total temperature increase of 30℃.

[0036] When T2-T1≥3℃, switch to the “raw water → second coil 10 → first coil 9” path to prioritize heating using the high temperature of the waste heat recovery tank; when the temperature difference is <3℃, randomly select the heat exchange sequence to avoid frequent reversal losses.

[0037] This stage uses quantitative temperature difference control to achieve an average preheating temperature rise of 30-40℃ for the raw water, which is more than 40% higher than the traditional fixed process.

[0038] 2. Boiling: Stop heating 2-3 minutes after the water boils. 3. Waste heat recovery and dynamic flow distribution (temperature-proportional linkage control): The flow ratio of the electric proportional diversion valve 17 is linked to T3 of the waste heat release water tank, forming a dynamic adjustment mechanism: When T3 < 35℃ (insufficient waste heat): the adjustment ratio is 8:2, 80% of the 85℃ hot water enters the third coil 11 to maximize the recovery of waste heat and make T3 rise rapidly; When 35℃≤T3≤50℃ (waste heat balance): maintain the optimal ratio of 7:3 to ensure both the amount of waste heat recovered and the provision of sufficient direct hot water to the activation unit; When T3 > 50℃ (overload of residual heat): the adjustment ratio is 6:4 to reduce the flow rate of the coil branch and avoid T3 from rising continuously and causing abnormal water tank pressure.

[0039] After the hot water in the third coil 11 releases waste heat, the water temperature drops from 85℃ to about 65℃, and the waste heat recovery is about 15-20kW·h / day (calculated based on an average daily water production of 200L).

[0040] 4. Waste heat circulation regulation (start / stop threshold control): The start-stop thresholds are T3 start = 35℃ and T3 stop = 50℃. When T3 ≥ 35℃, the controller first starts the air pump for 8 seconds to break the air resistance in the circulation pipeline 20, then shuts off the air pump, and then starts the circulating water pump at a speed of 1.2m. 3 The flow rate of / h drives the water outside the coils of the two water tanks to circulate, transferring the heat from the waste heat release water tank to the waste heat recovery water tank, so that the temperature of the waste heat recovery water tank is maintained at 40-45℃. When T3 ≥ 50℃, turn off the circulating water pump and stop the circulation to avoid the waste heat recovery water tank temperature being too high and affecting subsequent heat exchange.

[0041] This closed-loop cycle increases the waste heat utilization rate from the traditional 40% to over 75%.

[0042] 5. Dual-path collaborative activation (time-temperature coordinated control): Temperature coordination: The 85℃ hot water from the direct branch and the 58℃ hot water after heat exchange through the fourth coil are combined in the activation unit. After mixing, the water temperature is stabilized at 65-70℃. This temperature range can improve the efficiency of the activation module, with an improvement of 25% compared to the activation effect at room temperature.

[0043] Time control: By matching the pipeline flow rate (1.2L / min) with the activation module volume (0.3L), the water residence time is controlled at 15 seconds to ensure that the water molecule clusters are fully broken down and the proportion of small molecule clusters in the water after activation is ≥90%.

[0044] 6. Thermal storage and replenishment (water level threshold control): The activated boiled water flows into the insulated water tank's storage chamber 5, and the water level sensor monitors it in real time. When the water level is ≤1 / 3 of the volume, the controller triggers the first solenoid valve 13 to open, starting a new round of water production process; When the water level is ≥2 / 3 of the volume, close the first solenoid valve to stop the water intake, ensuring that the water tank always maintains an appropriate water storage level and balances water production efficiency and energy consumption.

[0045] The present invention will be further described in detail below with reference to specific embodiments.

[0046] Example 1 A boiled water preparation device includes a raw water inlet unit with a DN25 PPR pipe inlet pipe, a normally closed solenoid ball valve 13, and a DN25 turbine flow sensor. In the intelligent heat exchange unit, the solar water exchange tank 2 has a volume of 740L, the solar collector plate 1 is an 8㎡ vacuum plate type, and the first coil 9 (DN20 diameter) has four sections, three of which are used for heat release in the circulation loop corresponding to the three sets of solar collector plates 1, and one is used for heat absorption during the preheating process. The waste heat recovery water tank has a volume of 100L, and the second coil 10 (DN20 diameter) has three sections, two of which are used for heat absorption during the preheating process (switched by a reversing valve group), and one is used for heat release during the waste heat recovery process. The reversing valve group is an electric three-way reversing valve (model VQ41F-16), including a first electric three-way reversing valve 15 and a second electric three-way reversing valve 16. The first temperature sensor is a PT100 platinum resistance sensor.

[0047] The heating unit has an electric heater 6 with a power of 15kW, a third temperature sensor that is a K-type thermocouple, and a pressure safety valve with a tripping pressure of 0.8MPa. The waste heat circulation unit has a waste heat release water tank with a volume of 740L, a third coil 11 (diameter DN20) consisting of two coil sections (the front and rear sections of the third coil 11), a 50W air pump, and a circulating water pump with a flow rate of 4m³ / h. 3 / h, the second temperature sensor is a PT100 platinum resistance sensor.

[0048] The activation unit 7 uses an ultrasonic activation module (power 150W, frequency 28kHz); the insulated water storage unit has an insulated water tank with a volume of 200L, a fourth coil 12 (pipe diameter DN20), a 50mm thick polyurethane foam insulation layer on the tank wall, a submersible capacitive level gauge as the water level sensor, and a quick-opening ball valve as the water outlet valve; the controller is an S7-200 SMART PLC.

[0049] Example 2 The method for preparing boiled water based on the apparatus described in Example 1 includes the following steps: 1. Intelligent preheating of raw water: The controller obtains data from the first temperature sensor. T1 (solar water exchange tank 2) is 55℃ and T2 (waste heat recovery tank) is 52℃. Since T1 > T2, the reversing valve group switches to the "raw water - first coil - second coil" path. The raw water (initial temperature 22℃) rises to 48℃ after heat exchange in the first coil, and then rises to 52℃ after heat exchange in the second coil.

[0050] 2. The heated raw water enters the electric heater, boils, and continues heating for 3 minutes before stopping. This reduces the chlorine content in the water to meet safe drinking water standards and prevents nitrates from being reduced to carcinogenic nitrites. Since there are two sets of electric heaters connected by pipes and valves, heating and water pumping can be carried out alternately, improving equipment utilization efficiency.

[0051] 3. Waste heat recovery and diversion: The hot water in the third coil 11 is divided into two paths by the diversion valve. 70% (about 1.2L / min) enters the rear of the third coil 11 and the fourth coil 12, and the water temperature drops to 65℃ after releasing waste heat; 30% (about 0.5L / min) flows directly to the activation unit 7.

[0052] 4. Waste heat recycling: When the water temperature in the waste heat release tank rises to 45℃, the controller starts the air pump and circulating water pump to drive the water circulation, transferring the waste heat to the waste heat recovery tank to maintain its water temperature at 42-55℃.

[0053] 5. Multi-stage diversion activation: The 65°C hot water after heat exchange in the fourth coil 12 merges with the directly diverted 85°C hot water and enters the activation unit 7. After ultrasonic activation for 20 seconds, small molecule clusters of water are formed.

[0054] 6. Insulated storage: The activated boiled water flows into the water storage chamber of the insulated water tank 5. The water level sensor monitors the water level. When the water level drops below 70L, a new round of water production is started.

[0055] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computers or available storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0056] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0057] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0058] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0059] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooked water preparation device, characterized in that, The application relates to a water treatment device, which comprises a raw water inlet unit, a preheating unit, a heating unit, a waste heat recycling unit, an activation unit, a heat preservation and storage water unit and a controller, wherein the units are connected in series or parallel through pipelines and are electrically connected with the controller through sensors, pumps, electric heaters and electromagnetic valves arranged in the units. The raw water inlet unit comprises an inlet pipeline and a first electromagnetic valve, the first electromagnetic valve is connected in series with the inlet pipeline, the end of the inlet pipeline is connected with the preheating unit through a reversing valve group and a pipeline, a water quality exchange processor is arranged on the inlet pipeline and is used for filtering solid impurities in raw water and adjusting the distribution of mineral elements in water. The preheating unit comprises a solar heat exchange water tank with a first coil, a waste heat recovery water tank with a second coil and a reversing valve group, the solar heat exchange water tank is externally provided with a solar heat collecting plate, temperature sensors are arranged in the two water tanks, the reversing valve group comprises a first electric three-way reversing valve at the inlet end and a second electric three-way reversing valve at the outlet end, the output end of the first electric three-way reversing valve is connected with the inlet ends of the first coil and the second coil, the input end of the second electric three-way reversing valve is connected with the outlet ends of the first coil and the second coil, and the output end is connected with the heating unit. The heating unit comprises an electric heater, a second electromagnetic valve, a temperature sensor and a pressure safety valve, the second electromagnetic valve and the electric heater are connected in series with the output end pipeline of the second electric three-way reversing valve, and the pressure safety valve has a pressure jump of 0.7-0.9 MPa. The waste heat recycling unit comprises a waste heat release water tank with a third coil and a circulating pipeline with a water pump, a temperature sensor is arranged in the waste heat release water tank, and the waste heat release water tank is connected with the waste heat recovery water tank through the circulating pipeline. The heat preservation and storage water unit comprises a heat preservation water tank with a fourth coil, a water level sensor and a water outlet valve, a 50-80mm polyurethane heat preservation layer is arranged on the inner wall of the heat preservation water tank, the space in the water tank outside the coil is a water storage cavity, the outlet end of the electric heater is connected with the middle part of the third coil, and the water is divided into two paths through a shunt valve, one path is sequentially connected with the rear part of the third coil and the fourth coil and then connected with the activation unit, and the other path is directly connected with the activation unit; the activation unit comprises a small molecule group water activation module, and the outlet end is connected with the water storage cavity in the heat preservation water tank or a filling line inlet pipeline. The tank walls of the solar heat exchange water tank, the waste heat recovery water tank and the waste heat release water tank are all provided with a 30-50mm polyurethane heat preservation layer, the first / second / third / fourth coils are stainless steel spiral coils, and the pipe diameter is DN20-DN25.

2. A cooked water preparation device according to claim 1, characterized in that The temperature sensor has a temperature measurement range of 0-100 DEG C, an accuracy of + 0.5 DEG C, and a model of PT100 platinum resistance sensor, and the electric heater has two sets and is connected through pipelines and valves.

3. A cooked water preparation apparatus according to claim 1, characterized in that The small molecule group water activation module comprises a vibration activation device or a magnetic field activation device with a magnetic field intensity of 8000-12000Gs; the vibration activation device type comprises a low-frequency mechanical vibration type or an ultrasonic wave activation type with a power of 120-180W and a frequency of 20-30 kHz.

4. The cooked water preparation device according to claim 1, characterized in that The shunt valve is an electric proportional shunt valve, the water outlet proportion of the two paths can be adjusted in a range of 6:4-8:2, and the second temperature sensor data of the waste heat release water tank is dynamically controlled by the controller.

5. A cooked water preparation apparatus according to claim 1, characterized in that ​ 6. A cooked water preparation apparatus according to claim 1, characterized in that The water source heat pump is arranged on the circulating pipeline and used for heating the circulating water in the pipeline, and a water pipe connected with the tap water pipe or a filling line water inlet pipe is used to provide heat source water for the evaporator of the water source heat pump.

7. A method for preparing cooked water using the cooked water preparation device according to any one of claims 1 to 6, characterized by, The method comprises the following steps: S1. The controller opens the first electromagnetic valve, and the raw water is filtered to remove solid impurities and adjust the mineral element distribution in the water body through the water quality exchange processor arranged on the water inlet pipeline, and then enters the preheating unit through the reversing valve group; The controller collects the data of the two first temperature sensors in real time, obtains the temperature T1 of the solar heat exchange water tank and the temperature T2 of the waste heat recovery water tank, and sets the temperature judgment threshold value ΔT=3℃; If T2-T1≥ΔT: the first reversing valve is connected to "the water inlet pipeline-the first coil", and the second reversing valve is connected to "the second coil-heating unit", and the raw water is first exchanged heat (warmed up by 15-30℃) through the first coil and then exchanged heat (warmed up by 8-20℃) through the second coil; If T1-T2≥ΔT: the reversing valve group is switched, and the raw water is first exchanged heat through the second coil and then exchanged heat through the first coil; If |T1-T2|<ΔT: the reversing valve group does not switch; S2. After the raw water is preheated, it enters the electric heater, is heated to boiling, and then is continuously heated for 2-3 minutes, and the electric heater is closed; the high-temperature hot water discharged by the electric heater releases waste heat when passing through the third coil, heats the water in the waste heat release water tank outside the third coil, and makes the second temperature sensor data T3 increase, and the electric heater has two sets which are connected through pipes and valves, and heating and loading and unloading are alternately performed; When T3-T2≥ΔT, the air pump and the water pump are started to drive the water bodies outside the waste heat release water tank and the waste heat recovery water tank coil to circulate and transfer the waste heat; When T3-T2<ΔT, the circulating water pump is closed to stop circulating; S3. The hot water passing through the third coil is divided into two paths, one path flows into the fourth coil, exchanges heat with the mature water in the storage cavity of the heat preservation water tank, and then enters the activation unit, and the other path directly enters the activation unit; the controller adjusts the proportion of the two paths of water out according to the second temperature sensor data T3 in the waste heat release water tank through the electric proportional shunt valve; S4. The two paths of water stay in the activation module for 10-30 seconds, and the macromolecular groups of the water are broken through vibration to complete the preparation of the mature water; S5. The mature water after activation flows into the storage cavity of the heat preservation water tank for standby, when the water level is ≤1 / 3 of the volume of the storage cavity, the controller triggers a new round of water preparation, and when the water level is ≥2 / 3 of the volume of the storage cavity, the first electromagnetic valve is closed to stop water inlet.

8. The method of claim 7, wherein the cooked water is prepared by the steps of: According to the second temperature sensor data T3 in the waste heat release water tank, the specific steps of adjusting the proportion of the two paths of water out through the electric proportional shunt valve are as follows: if T3>65℃: the adjustment proportion is third coil branch:direct activation branch 8:2, and the waste heat recovery amount is increased; If 50℃≤T3≤65℃: the adjustment proportion is 7:3, and the waste heat balance is maintained; If T3<50℃: the adjustment proportion is 6:4, and the waste heat input amount is reduced.

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