A method, device, equipment and medium for identifying half-cooked water of a gas water heater

Abstract

The application discloses a kind of raw water identification method, device, equipment and medium of gas water heater, the raw water identification method first obtains the water temperature in water inlet pipeline, the water flow in water inlet pipeline, the water flow rate of change in water inlet pipeline, the water storage temperature in mixed gas water storage tank, the outlet water temperature rate of change in outlet pipeline, the rotating speed of water pump assembly on outlet pipeline, historical water standby time length and historical raw water volume average value, then predict the raw water volume in outlet pipeline, finally when the prediction value of raw water volume in outlet pipeline is greater than first preset raw water volume threshold, open bypass regulating valve, to make water inlet pipeline, mixed gas water storage tank, outlet pipeline and bypass connection pipeline form inner circulation pipeline, water flow circulates in inner circulation pipeline, until the prediction value of raw water volume in outlet pipeline is less than second preset raw water volume threshold. Utilize above-mentioned method, realize real-time identification and early prediction to raw water.

Description

Technical Field

[0001] This invention relates to the field of smart home technology, and in particular to a method, device, equipment and medium for identifying partially filled water in a gas water heater. Background Technology

[0002] Gas water heaters are widely used in household hot water supply scenarios due to their advantages of instant hot water and unlimited water volume. However, the use of gas water heaters has long suffered from two major industry pain points: First, when the water in the pipes is in standby mode, the hot water in the pipes naturally cools down, requiring a large amount of cold water to be discharged the next time water is used, resulting in water waste; second, during the switching on and off of water supply and the start and stop of heating, residual cold water in the pipes mixes with the hot water to form a section of "half-cold water" with a temperature between cold water and the set hot water temperature. This water temperature fluctuates greatly, which can cause discomfort to users, especially when the water supply is repeatedly switched on and off in a short period of time.

[0003] Existing zero-cold-water solutions for gas water heaters primarily achieve overall pipeline circulation heating through return water pipes or one-way valves. However, this only solves the "cold water at the start" problem and cannot accurately identify and eliminate the intermittent cold water segment during the on / off process. Furthermore, the single-point temperature threshold control used can only determine whether the water temperature has reached the set temperature; it cannot quantitatively assess the volume of intermittent water, the degree of temperature deviation, or predict the severity of intermittent water in advance. Summary of the Invention

[0004] This invention provides a method, device, equipment, and medium for identifying partially submerged water in a gas water heater, enabling real-time identification and early prediction of submerged water, stabilizing the outlet water temperature of the gas water heater, and solving the problem of fluctuating water temperature or large amounts of cold water when the gas water heater first dispenses water.

[0005] In a first aspect, embodiments of the present invention provide a method for identifying partially filled water in a gas water heater. The gas water heater includes an inlet pipe, an outlet pipe, a mixed-gas storage tank, and a bypass connection pipe. The first end of the inlet pipe is connected to a water inlet, and the second end of the inlet pipe is connected to a liquid inlet of the mixed-gas storage tank. The first end of the outlet pipe is connected to the gas-liquid outlet of the mixed-gas storage tank, and the second end of the outlet pipe is connected to a water outlet. A water pump assembly is provided on the outlet pipe. The first end of the bypass connection pipe is connected to the second end of the outlet pipe, and the second end of the bypass connection pipe is connected to the first end of the inlet pipe. A bypass regulating valve is provided on the bypass connection pipe. The method for identifying partially cooked water includes: The following parameters are obtained: inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature, outlet water temperature change rate, outlet water speed, pump speed, historical water usage standby time, and historical average volume of partially filled water. The volume of mixed water in the outlet pipe is predicted based on the inlet water temperature, the inlet water flow rate, the rate of change of the inlet water flow rate, the storage water temperature in the mixed water tank, the rate of change of the outlet water temperature, the rotation speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of mixed water. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0006] Optionally, the volume of mixed water in the outlet pipe is predicted based on the inlet water temperature, the inlet water flow rate, the rate of change of the inlet water flow rate, the storage water temperature in the mixed-aeration water tank, the rate of change of the outlet water temperature, the rotational speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water, including: The following parameters are normalized: inlet water temperature in the inlet pipe, water flow rate in the inlet pipe, water flow rate change rate in the inlet pipe, water temperature in the mixed-air storage tank, water temperature change rate in the outlet pipe, water pump assembly speed in the outlet pipe, historical water usage standby time, and historical average volume of partially saturated water. The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in the mixed-air storage tank, outlet water temperature change rate, outlet water pump assembly speed, historical water standby time, and historical average volume of partially filled water are weighted and linearly processed to obtain the predicted value of the partially filled water volume in the outlet water pipeline.

[0007] Optionally, the normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, storage water temperature in the mixed-aeration water tank, outlet water temperature change rate, outlet water pump assembly speed, historical water standby time, and historical average volume of partially filled water are subjected to weighted linear processing to obtain a predicted value of the partially filled water volume in the outlet water pipe, including: According to the calculation formula V mix(yc) =W V1 ×T in + W V2 ×Q+ W V3 × + W V4 ×T tank + W V5 × + W V6 ×n+ W V7 ×T off + W V8 ×V mix(pj) + b V The predicted value V of the volume of intermittent water in the outlet pipe was calculated. mix(yc) Among them, T in Q represents the normalized inlet water temperature in the inlet pipe, and Q represents the normalized water flow rate in the inlet pipe. T represents the rate of change of water flow in the inlet pipeline after normalization. tank T represents the water temperature in the mixed-gas storage tank after normalization. out This indicates the normalized water temperature inside the outlet pipe. T represents the rate of change of water temperature in the outlet pipeline after normalization, n represents the rotational speed of the pump assembly in the outlet pipeline after normalization, and T represents the normalized rotational speed of the pump assembly. off V represents the normalized historical water usage standby time. mix(pj) W represents the average volume of the historical intercalated water after normalization. V1 W V2 W V3 W V4 W V5 W V6 W V7 With W V8 All are weighting coefficients, b V This is a constant bias term.

[0008] Optionally, when the predicted volume of partially filled water in the outlet pipe is greater than a first preset partially filled water volume threshold, the bypass regulating valve is opened to form an internal circulation pipe with the inlet pipe, the mixed-air storage tank, the outlet pipe, and the bypass connection pipe, and water flows in the internal circulation pipe until the predicted volume of partially filled water in the outlet pipe is less than a second preset partially filled water volume threshold, further comprising: Based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-air storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially submerged water, the minimum temperature of partially submerged water in the outlet pipe is predicted. Based on the predicted minimum temperature of the intermittent water in the outlet pipeline and the preset mapping relationship between the intermittent water temperature and the valve opening, the target valve opening of the bypass regulating valve is determined. When the predicted volume of partially filled water in the outlet pipe is greater than a first preset partially filled water volume threshold, the bypass regulating valve is opened to form an internal circulation pipe with the inlet pipe, the mixed-air storage tank, the outlet pipe, and the bypass connection pipe. Water circulates in the internal circulation pipe until the predicted volume of partially filled water in the outlet pipe is less than a second preset partially filled water volume threshold, including: When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened according to the target valve opening degree, so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0009] Optionally, based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-aeration water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotational speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially submerged water, the minimum temperature of partially submerged water in the outlet pipe is predicted, including: The following parameters are normalized: inlet water temperature in the inlet pipe, water flow rate in the inlet pipe, water flow rate change rate in the inlet pipe, water temperature in the mixed-air storage tank, water temperature change rate in the outlet pipe, water pump assembly speed in the outlet pipe, historical water usage standby time, and historical average volume of partially saturated water. The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in the mixed-aeration water tank, outlet water temperature change rate, outlet water pump assembly speed, historical water standby time, and historical average volume of partially filled water are weighted and linearly processed to obtain the predicted value of the lowest temperature of partially filled water in the outlet water pipe.

[0010] Optionally, after predicting the volume of mixed water in the outlet pipe based on the inlet water temperature, the inlet water flow rate, the rate of change of the inlet water flow rate, the storage water temperature in the mixed-aeration water tank, the rate of change of the outlet water temperature, the rotational speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water, the method further includes: Determine the actual volume of the untreated water in the outlet pipe; Based on the actual value of the volume of water trapped in the outlet pipe and the predicted value of the volume of water trapped in the outlet pipe, the self-learning value of the volume of water trapped in the outlet pipe is determined. The average value of the historical volume of partially filled water is updated based on the self-learning value of the volume of partially filled water in the outlet pipe.

[0011] Optionally, based on the actual value of the volume of partially filled water in the outlet pipe and the predicted value of the volume of partially filled water in the outlet pipe, a self-learning value of the volume of partially filled water in the outlet pipe is determined, including: The difference between the actual volume of water trapped in the outlet pipe and the predicted volume of water trapped in the outlet pipe is obtained. According to the calculation formula V mix(zxx) = V mix(yc) +λ×e V The self-learning value V of the volume of intermittent water in the outlet pipe is calculated. mix(zxx) Among them, V mix(yc) e represents the predicted volume of trapped water within the outlet pipe. V λ represents the difference between the actual volume of intermittent water in the outlet pipe and the predicted volume of intermittent water in the outlet pipe, where λ represents the self-learning coefficient.

[0012] Secondly, embodiments of the present invention also provide a device for identifying partially filled water in a gas water heater. The gas water heater includes an inlet pipe, an outlet pipe, a mixed-gas storage tank, and a bypass connection pipe. The first end of the inlet pipe is connected to a water inlet, and the second end of the inlet pipe is connected to a liquid inlet of the mixed-gas storage tank. The first end of the outlet pipe is connected to the gas-liquid outlet of the mixed-gas storage tank, and the second end of the outlet pipe is connected to a water outlet. A water pump assembly is provided on the outlet pipe. The first end of the bypass connection pipe is connected to the second end of the outlet pipe, and the second end of the bypass connection pipe is connected to the first end of the inlet pipe. A bypass regulating valve is provided on the bypass connection pipe. The device for identifying partially cooked water includes: The data acquisition module is used to acquire the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water. The volume prediction module is used to predict the volume of mixed water in the outlet pipe based on the inlet water temperature, the inlet water flow rate, the rate of change of the inlet water flow rate, the storage water temperature in the mixed water tank, the rate of change of the outlet water temperature, the rotation speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of mixed water. The internal circulation control module is used to open the bypass regulating valve when the predicted value of the volume of mixed water in the outlet pipe is greater than the first preset volume threshold of mixed water, so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of mixed water in the outlet pipe is less than the second preset volume threshold of mixed water.

[0013] Thirdly, embodiments of the present invention also provide a terminal device, including: One or more processors; Storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the half-filled water identification method for gas water heaters as described in any of the first aspects.

[0014] Fourthly, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, characterized in that, when the program is executed by a processor, it implements the method for identifying partially filled water in a gas water heater as described in any of the first aspects.

[0015] This invention provides a method, apparatus, device, and medium for identifying partially filled water in a gas water heater. The method first acquires the inlet water temperature, inlet water flow rate, inlet water flow rate change rate, storage water temperature in the mixing tank, outlet water temperature change rate, outlet water pump speed, historical standby time, and historical average partially filled water volume in the inlet water pipe. Then, based on the inlet water temperature, inlet water flow rate, inlet water flow rate change rate, and storage water temperature in the mixing tank, the method identifies partially filled water in the gas water heater. The volume of water in the outlet pipe is predicted by measuring the water storage temperature, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical standby time of water use, and the historical average volume of partially filled water. Finally, when the predicted volume of partially filled water in the outlet pipe is greater than the first preset threshold value, the bypass regulating valve is opened so that the inlet pipe, the mixed-air storage tank, the outlet pipe and the bypass connection pipe form an internal circulation pipe. The water flows in the internal circulation pipe until the predicted volume of partially filled water in the outlet pipe is less than the second preset threshold value. Using the above method, a multi-dimensional sensor array and an embedded submerged water identification chip are added to the internal circulation pipeline structure of the gas water heater. The existence of submerged water is modeled in a targeted manner, and a quantitative judgment standard and mathematical calculation formula for submerged water are proposed. By collecting the above eight-dimensional feature vectors in real time, the volume and other parameters of submerged water are identified and predicted. Then, the submerged water is accurately eliminated by preheating in the internal circulation process. During the water use, submerged water can also be eliminated by flushing in real time. Finally, the effect of significantly reducing the volume of submerged water, stabilizing the outlet water temperature, and accurately keeping the water warm in standby mode is achieved.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a gas water heater provided in an embodiment of the present invention; Figure 2 This is a flowchart illustrating a method for identifying partially filled water in a gas water heater according to an embodiment of the present invention; Figure 3This is a flowchart illustrating another method for identifying partially filled water in a gas water heater provided in an embodiment of the present invention; Figure 4 This is a flowchart illustrating another method for identifying partially filled water in a gas water heater provided in an embodiment of the present invention; Figure 5 This is a flowchart illustrating another method for identifying partially filled water in a gas water heater provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a gas water heater half-filled water identification device provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a terminal device provided in an embodiment of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Figure 1 This is a schematic diagram of the overall structure of a gas water heater provided in an embodiment of the present invention, as shown below. Figure 1As shown, the overall structure of the gas water heater will first be briefly described. The gas water heater includes a water inlet pipe 10, a gas inlet pipe 20, a water outlet pipe 30, a mixed-gas storage tank 40, a main controller 50, and a bypass connection pipe 70. The first end of the water inlet pipe 10 is connected to a water inlet, and the second end of the water inlet pipe 10 is connected to the liquid inlet of the mixed-gas storage tank 40. The water inlet can be understood as a tap water inlet (or raw water inlet, user water inlet, etc.). The water inlet pipe 10 is the water inlet path for tap water, and the water flow in the water inlet pipe 10 can flow along the pipe direction to the liquid inlet of the mixed-gas storage tank 40. For example, a first water valve switch 11 is provided on the water inlet pipe 10. The opening and closing of the first water valve switch 11 corresponds to whether the water flow in the water inlet pipe 10 can or cannot flow to the liquid inlet of the mixed-gas storage tank 40.

[0022] The first end of the air intake pipe 20 is connected to the air pump assembly, and the second end of the air intake pipe 20 is connected to the air inlet of the mixed air storage tank 40. The air intake pipe 20 is the air intake path for outside air. After the air pump assembly is turned on, the air pump assembly can deliver outside air to the air inlet of the mixed air storage tank 40, and then input it into the interior of the mixed air storage tank 40. Figure 1 The specific location of the air pump assembly is not shown. For example, a one-way air inlet valve 21 is provided on the air inlet pipe 20. The one-way air inlet valve 21 can be located between the air pump assembly and the gas-liquid outlet of the mixed-air storage tank 40. The air inlet direction corresponding to the one-way air inlet valve 21 is the direction from the air pump assembly to the air inlet of the mixed-air storage tank 40. The opening and closing of the one-way air inlet valve 21 corresponds to whether or not outside air can be delivered to the air inlet of the mixed-air storage tank 40. The one-way air inlet valve 21 can balance the internal air pressure of the mixed-air storage tank 40 during the internal circulation process, preventing phenomena such as excessive negative pressure causing the pipe to collapse, the tank to collapse, or water hammer in the pipes, thus improving the safety, reliability, and service life of the equipment.

[0023] Thus, gas and water can be mixed inside the cavity of the gas-water mixing tank 40 to form water with a high gas content. The water inlet of the gas-water mixing tank 40 ensures the introduction of water flow, the air inlet ensures the introduction of gas, and the gas-liquid outlet ensures the discharge of microbubble water. That is, a water-gas mixing process is carried out inside the gas-water mixing tank 40 to form microbubble water. For example, a water level detection sensor 41 is installed inside the gas-water mixing tank 40. The water level detection sensor 41 can detect the water level inside the gas-water mixing tank 40 to facilitate dry-burn protection in case of water shortage, thereby improving the safety, reliability, and service life of the equipment.

[0024] Furthermore, the gas-liquid outlet of the mixed-gas storage tank 40 is connected to the first end of the water outlet pipe 30, and the second end of the water outlet pipe 30 is connected to the water outlet. The gas-liquid outlet can discharge the microbubble water inside the mixed-gas storage tank 40, that is, the microbubble water generated by the mixed-gas storage tank 40 can be provided to the user through the water outlet pipe 30. It should also be noted that the condition for determining whether there is partially filled water at the water outlet connected to the second end of the water outlet pipe 30 is that, assuming the user sets the temperature to T... set The user sets the temperature T. set The permissible negative deviation threshold is ΔT (for example, ΔT can be 2°C), and the inlet water temperature in the intake pipe 20 is T. in Then, when the outlet water temperature T in the outlet pipe is 30... out Satisfy T in <T out <T set When the temperature reaches -△T, the water flow is determined to be in a partially cooled section. This partially cooled section is neither at a comfortable bathing temperature nor pure cold water, and is the core area affecting the user experience.

[0025] The gas water heater also includes a heat exchanger 61 and a burner 62; the burner 62 is used to burn gas and provide heat to the heat exchanger 61; the heat exchanger 61 is located between the water inlet pipe 10 and the mixed gas storage tank 40, and the heat exchanger 61 is arranged around the burner 62, and the heat exchanger 61 is used for water flow heat exchange.

[0026] The gas water heater also includes a bypass connection pipe 70. The first end of the bypass connection pipe 70 is connected to the second end of the outlet pipe 30, and the second end of the bypass connection pipe 70 is connected to the first end of the inlet pipe 10. The inlet pipe 10, the mixed-gas storage tank 40, the outlet pipe 30, and the bypass connection pipe 70 form an internal circulation pipe, allowing water to circulate within it. For example, the direction of water circulation within the internal circulation pipe can be sequentially: inlet pipe 10, mixed-gas storage tank 40, outlet pipe 30, bypass connection pipe 70; or, the direction of water circulation within the internal circulation pipe can be sequentially: outlet pipe 30, mixed-gas storage tank 40, inlet pipe 10, bypass connection pipe 70. The gas water heater in this embodiment can be a dual-circulation insulated gas water heater, capable of both internal and external circulation processes. These are not described in detail here, but can be referenced from conventional settings in the field.

[0027] Figure 2This is a flowchart illustrating a method for identifying partially filled water in a gas water heater according to an embodiment of the present invention. This method is applicable to situations where partially filled water needs to be identified and eliminated during the standby period of the gas water heater or the initial period after the user turns on the gas water heater. The method can be executed by a partially filled water identification device, which can be implemented in hardware and / or software and can be configured in a control board. Figure 2 As shown, the method for identifying partially cooked water includes: S110. Obtain the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially saturated water.

[0028] For example, continue to refer to Figure 1 A water flow detection sensor 12 is installed on the water inlet pipe 10. The water flow detection sensor 12 can detect the water flow rate in the water inlet pipe 10 and correspondingly obtain the rate of change of the water flow rate in the water inlet pipe 10. The main controller 50 is electrically connected to the water flow detection sensor 12, so the main controller 50 can obtain the water flow rate and the rate of change of the water flow rate in the water inlet pipe 10.

[0029] For example, continue to refer to Figure 1 A first water temperature sensor 13 is installed on the inlet pipe 10, which can detect the inlet water temperature in the inlet pipe 10. The main controller 50 is electrically connected to the first water temperature sensor 13, so the main controller 50 can obtain the inlet water temperature in the inlet pipe 10.

[0030] For example, continue to refer to Figure 1 The mixed-air water storage tank 40 is equipped with a second water temperature detection sensor 42, which can detect the water temperature inside the mixed-air water storage tank 40. The main controller 50 is electrically connected to the second water temperature detection sensor 42, so the main controller 50 can obtain the water temperature inside the mixed-air water storage tank 40.

[0031] For example, continue to refer to Figure 1 A water pump assembly 31 is installed on the outlet pipe 30. The opening and closing of the water pump assembly 31 corresponds to whether the microbubble water in the mixed-air water storage tank 40 can or cannot flow to the second end of the outlet pipe 30. When the water pump assembly 31 is turned on, it can increase the pressure of the water flow and correspondingly drive the internal circulation water flow. The main controller 50 is electrically connected to the water pump assembly 31, so the main controller 50 can obtain the rotational speed of the water pump assembly 31 on the outlet pipe 30.

[0032] For example, continue to refer to Figure 1 A third water temperature sensor 32 is installed on the water outlet pipe 30. The third water temperature sensor 32 can detect the water temperature in the water outlet pipe 30 and correspondingly calculate the rate of change of the water temperature in the water outlet pipe 30. The main controller 50 is electrically connected to the third water temperature sensor 32, so the main controller 50 can obtain the rate of change of the water temperature in the water outlet pipe 30.

[0033] And, exemplarily, continue to refer to Figure 1 The historical water usage standby time and the historical average volume of partially used water can be obtained from the storage contents of the main controller 50's storage chip. The historical water usage standby time can be understood as the time period between the last water usage end time and the current time, and the historical average volume of partially used water can be understood as the average volume of partially used water that existed in the previous multiple user processes.

[0034] S120. Based on the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water storage temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially filled water, predict the volume of partially filled water in the outlet water pipe.

[0035] Specifically, please refer to Figure 1The main controller 50 is equipped with an AI half-baked water recognition chip 51. This chip can be understood as being embedded or solidified in the main controller 50's storage chip as firmware. Based on the multi-dimensional data acquired above, the AI ​​half-baked water recognition chip 51 can complete the recognition, calculation, and prediction of half-baked water. For example, the inference cycle of the AI ​​half-baked water recognition chip 51 is less than or equal to 100ms, meeting the requirements of embedded real-time control and ensuring the synchronization and accuracy of input data. This provides a reliable data foundation for subsequent real-time recognition and control, adapting to embedded low-computing-power scenarios. This embodiment essentially outputs prediction results related to "half-water" based on eight-dimensional feature vectors obtained by the main controller 50: inlet water temperature in inlet pipe 10, water flow rate in inlet pipe 10, water flow rate change rate in inlet pipe 10, water storage temperature in mixed-air storage tank 40, outlet water temperature change rate in outlet pipe 30, rotation speed of water pump assembly 31 on outlet pipe 30, historical water usage standby time, and historical average volume of partially filled water. For example, it outputs the predicted value of the volume of partially filled water in outlet pipe 30. Furthermore, exemplarily, based on these eight-dimensional feature vectors obtained by the main controller 50, it can also output the predicted value of the duration of partially filled water in outlet pipe 30 and the predicted value of the lowest temperature of partially filled water in outlet pipe 30. Of course, other prediction results related to partially filled water can also be output, but these will not be illustrated in detail in this embodiment.

[0036] S130. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0037] Specifically, please refer to Figure 1A bypass regulating valve 71 is installed on the bypass connection pipe 70. The opening and closing of the bypass regulating valve 71 corresponds to whether the water flow in the bypass connection pipe 70 can or cannot flow to the inlet pipe 10 (or outlet pipe 30). Furthermore, the bypass regulating valve 71 can be understood as an electric regulating valve driven by a stepper motor, or as a proportional regulating valve. For example, the bypass regulating valve 71 can continuously adjust its valve opening within the range of 0-100%, and the adjustment step of the bypass regulating valve 71 can be 1%, achieving precise control of the water flow in the bypass connection pipe 70. For example, the flow regulation linearity of the bypass regulating valve 71 is greater than or equal to 90%, and it automatically resets to a fully closed state after power failure. For example, the bypass regulating valve 71 can also be used in conjunction with PID dynamic control, which has a much higher mixing accuracy than the on / off bypass scheme. It can achieve a smooth transition of the outlet water temperature, control the fluctuation of the outlet water temperature within ±1℃, avoid sudden rises and falls in water temperature, and greatly improve the user's bathing comfort.

[0038] In one specific embodiment, when the gas water heater is in standby mode and the predicted volume of residual water in the outlet pipe 30 is greater than the first preset residual water volume threshold, the bypass regulating valve 71 is opened to form an internal circulation pipe with the inlet pipe 10, the mixed gas storage tank 40, the outlet pipe 30, and the bypass connecting pipe 70. The water flows in the internal circulation pipe, drawing the residual residual water in the outlet pipe 30 back to the mixed gas storage tank 40 through the bypass connecting pipe 70. At the same time, the water flow detection sensor 12 detects a change in the water flow in the inlet pipe 10 and can also trigger the heat exchanger 61 and the burner 62 to ignite and supplement the heat, maintaining the water temperature in the mixed gas storage tank 40. This causes the water in the outlet pipe 30 to heat up as it circulates in the internal circulation pipe until the predicted volume of residual water in the outlet pipe 30 is less than the second preset residual water volume threshold. After that, the bypass regulating valve 71 can be closed to stop the internal circulation process. The first preset threshold for the volume of partially filled water is greater than the second preset threshold for the volume of partially filled water. For example, the first preset threshold for the volume of partially filled water can be 200 ml. For example, the second preset threshold for the volume of partially filled water can be 100 ml. For example, the predicted value of the volume of partially filled water in the outlet pipe 30 can be understood as the volume of partially filled water that may exist in the next water use, and the first preset threshold for the volume of partially filled water can be understood as a safety threshold. For example, the valve opening degree corresponding to the opening of the bypass regulating valve 71 can be any opening degree within the range of 30%-50%. In other words, this embodiment can be understood as a standby intelligent heat preservation mechanism triggered by the predicted value of the volume of water trapped in the outlet pipe 30. This mechanism initiates a short-cycle internal circulation process in advance. Compared with the traditional timed internal circulation process or the use of a fixed threshold for internal circulation, this embodiment can reduce ineffective heating cycles, reduce standby energy consumption, and accurately eliminate water trapped in the pipe before the user uses water, thereby reducing the generation of water trapped in the pipe from the source. For example, the volume of water trapped in the pipe can be reduced to more than 65%, reducing cold water discharge. At the same time, the water temperature in the pipe can be accurately maintained, achieving the effect of instant hot water and no temperature difference. This solves problems such as long water trapped in the pipe during the water switching process, large temperature fluctuations, a lot of cold water in the pipe, and insufficient heat preservation accuracy.

[0039] In another specific embodiment, when the gas water heater is in operation, i.e., during the user's normal water usage phase, the system identifies and counteracts any untreated water in real time. The main controller 50 can use a PID dynamic control algorithm to determine the temperature of the water outlet in the outlet pipe 30 and the user-set temperature T. set The difference between them corresponds to the adjustment and real-time correction of the opening degree of the bypass regulating valve 71, so that the outlet water temperature in the outlet pipe 30 smoothly transitions to the user-set temperature T. set For example, according to the mixing temperature theory, the outlet water temperature T in the outlet pipe 30 is... out Satisfy the calculation formula T out =k×Tin +(1-k)×T tank Where k represents the valve opening of the bypass regulating valve 71, and k can also be understood as the proportion of the bypass flow rate of the bypass connection pipe 70 to the total outflow rate. The value of k ranges from 0 to 1. in The temperature of the inlet water in the inlet pipe 10 is represented by T. tank This indicates the water temperature stored in the aerated water storage tank 40. For example, at the initial stage of water use, the aerated water storage tank 40 has sufficient hot water. The main controller 50 can correspondingly reduce the valve opening k of the bypass regulating valve 71 to increase the initial outlet water temperature and shorten the duration of partially filled water. Within 0-2 seconds, the main controller 50 can correspondingly control the valve opening k of the bypass regulating valve 71 to gradually increase from 0 to 15%, using the hot water in the aerated water storage tank 40 to quickly raise the initial outlet water temperature. Within 2-5 seconds, the main controller 50 can fine-tune the valve opening k of the bypass regulating valve 71 according to the rate of change of the outlet water temperature in the outlet water pipeline 30, so that the outlet water temperature in the outlet water pipeline 30 rises uniformly to the user-set temperature T. set And, when the water temperature in the outlet pipe 30 is close to the user-set temperature T... set When the water temperature in the outlet pipe 30 stabilizes, the valve opening k of the bypass regulating valve 71 can be maintained at the equilibrium value to offset the fluctuation of heat load, keep the water temperature in the outlet pipe 30 constant, achieve a smooth transition of water temperature without fluctuation, and completely eliminate the difference in the perceived temperature of partially uncooked water.

[0040] The technical solution in this invention adds a multi-dimensional sensor array and an embedded submerged water identification chip to the internal circulation pipeline structure of the gas water heater. It performs targeted modeling of the presence of submerged water, proposes quantitative judgment criteria and mathematical calculation formulas for submerged water, and identifies and predicts parameters such as the volume of submerged water by collecting the above eight-dimensional feature vectors in real time. Then, it accurately eliminates submerged water by preheating in the internal circulation process. During the water use process, it can also flush and eliminate submerged water in real time, ultimately achieving the effects of significantly reducing the volume of submerged water, stabilizing the outlet water temperature, and accurately keeping the water warm in standby mode.

[0041] Figure 3 This is a flowchart illustrating another method for identifying partially filled water in a gas water heater according to an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, the volume of partially filled water in the outlet pipe is predicted based on the inlet water temperature, the water flow rate, the rate of change of the water flow rate, the water temperature in the mixed gas storage tank, the rate of change of the outlet water temperature, the rotational speed of the water pump assembly in the outlet pipe, the historical standby time, and the historical average volume of partially filled water. This includes: Normalize the following parameters: inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in mixed aerated water tank, outlet water temperature change rate, outlet water pump assembly speed, historical water usage standby time, and historical average volume of partially saturated water. The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, mixed water temperature in the water storage tank, outlet water temperature change rate, outlet water pump component speed, historical water usage standby time, and historical average volume of partially filled water in the outlet water pipeline are weighted and linearly processed to obtain the predicted value of the partially filled water volume in the outlet water pipeline.

[0042] For details not covered in this embodiment, please refer to the above embodiments. Figure 3 As shown, the method for identifying partially cooked water includes: S210, obtain the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially saturated water.

[0043] S220, normalize the inlet water temperature in the inlet water pipeline, the water flow rate in the inlet water pipeline, the water flow rate change rate in the inlet water pipeline, the water storage temperature in the mixed water storage tank, the water temperature change rate in the outlet water pipeline, the rotation speed of the water pump assembly in the outlet water pipeline, the historical water usage standby time, and the historical average volume of partially saturated water.

[0044] Specifically, since the units of the eight feature vectors mentioned above are not entirely the same, they cannot be directly added or subtracted. This embodiment essentially maps each feature vector to the range of 0-1, achieving simple normalization. For example, the general normalization formula is X' = (XX...) min ) / (X max -X min ), where X can be any of the actual values ​​of the eight-dimensional feature vectors mentioned above, X min X can be the minimum allowed value / minimum value of any one of the above eight dimensional feature vectors. max This can be the maximum allowed value / maximum value of any one of the eight eigenvectors mentioned above. By substituting the actual value of any one of these eight eigenvectors, along with its corresponding maximum and minimum values, into the above calculation formula, the normalization process of these eight eigenvectors can be achieved.

[0045] For example, the minimum inlet water temperature in the inlet pipe can be 5°C, and the maximum inlet water temperature in the inlet pipe can be 30°C. For example, the minimum water temperature in the mixing tank can be 30°C, and the maximum water temperature in the mixing tank can be 60°C. For example, the minimum water flow rate in the inlet pipe can be 0 L / min, and the maximum water flow rate in the inlet pipe can be 10 L / min. For example, the minimum rate of change of water flow rate in the inlet pipe can be -20 (L / min) / s, and the maximum rate of change of water flow rate in the inlet pipe can be 20 (L / min) / s. For example, the minimum rate of change of water temperature in the outlet pipe can be -30°C / s, and the maximum rate of change of water temperature in the outlet pipe can be 30°C / s. For example, the minimum rotational speed of the water pump assembly in the outlet pipe can be 0 rpm, and the maximum rotational speed of the water pump assembly in the outlet pipe can be 3000 rpm. For example, the minimum historical water usage standby time can be 0 seconds, and the maximum historical water usage standby time can be 3600 seconds. For example, the minimum historical average volume of partially uncooked water can be 0 milliliters, and the maximum historical average volume of partially uncooked water can be 500 milliliters.

[0046] S230. After normalization, the inlet water temperature in the inlet water pipeline, the water flow rate in the inlet water pipeline, the rate of change of the water flow rate in the inlet water pipeline, the water storage temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipeline, the rotation speed of the water pump assembly in the outlet water pipeline, the historical water use standby time, and the historical average value of the mixed water volume are weighted and linearly processed to obtain the predicted value of the mixed water volume in the outlet water pipeline.

[0047] Optionally, the normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, mixed-air water temperature in the storage tank, outlet water temperature change rate, outlet water pump assembly speed, historical standby time, and historical average volume of partially filled water are weighted linearly to obtain a predicted value of the partially filled water volume in the outlet water pipe, including: based on the calculation formula V mix(yc) =W V1 ×T in + W V2 ×Q+W V3 × + W V4 ×T tank + W V5 × + W V6 ×n+ W V7 ×T off + W V8 ×V mix(pj) + b VThe predicted value V of the volume of water trapped in the outlet pipe was calculated. mix(yc) Among them, T in Q represents the normalized inlet water temperature in the inlet pipe, and Q represents the normalized water flow rate in the inlet pipe. T represents the rate of change of water flow in the inlet pipe after normalization. tank T represents the water temperature inside the mixed-gas storage tank after normalization treatment. out This indicates the normalized outlet water temperature within the outlet pipe. T represents the rate of change of water temperature in the normalized outlet pipeline, where n represents the rotational speed of the pump assembly in the normalized outlet pipeline. off V represents the historical water usage standby time after normalization. mix(pj) W represents the average historical volume of intercalary water after normalization. V1 W V2 W V3 W V4 W V5 W V6 W V7 With W V8 All are weighting coefficients, b V This is a constant bias term.

[0048] Specifically, the above weighted linear processing can be understood as an equivalent weighted linear regression form. The eight normalized feature vectors are each multiplied by their corresponding weight coefficients and then summed to obtain the predicted value V of the volume of trapped water in the outlet pipe. mix(yc) It should also be noted that W V1 W V2 W V3 W V4 W V5 W V6 W V7 With W V8 These weighting coefficients were obtained through offline training using data from a large number of household water usage scenarios and are stored in the main controller. During operation, the gas water heater can perform weighted linear processing without needing an internet connection, enabling rapid calculation of the predicted volume V of the trapped water in the outlet pipe. mix(yc) .

[0049] Furthermore, it should be noted that this embodiment provides a quantitative definition and mathematical model for partially submerged water, and proposes quantitative judgment criteria and mathematical calculation formulas for it. This provides a data foundation for subsequent identification of partially submerged water, transforming the subjective "unstable water temperature" into a quantifiable numerical indicator, filling a quantitative gap in the industry, and providing an objective evaluation system for the identification and elimination of partially submerged water. Based on the quantitative calculation formula and multi-dimensional sensor data, the existence range of partially submerged water can be accurately defined, and core parameters such as its volume, duration, and minimum temperature can be predicted. This solves the problems of traditional solutions where partially submerged water can only be subjectively perceived, lacks a unified definition, and cannot be quantitatively assessed. It provides an objective numerical basis for intelligent control. Moreover, this multi-dimensional sensor data, combined with historical and real-time data, can predict the severity of partially submerged water in advance. Compared with traditional threshold-triggered control, the identification response speed is faster and the adaptability is stronger.

[0050] S240. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0051] Figure 4 This is a flowchart illustrating another method for identifying partially filled water in a gas water heater according to an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, when the predicted volume of partially filled water in the outlet pipe is greater than a first preset partially filled water volume threshold, a bypass regulating valve is opened to form an internal circulation pipe with the inlet pipe, the mixed gas storage tank, the outlet pipe, and the bypass connection pipe. Water circulates in the internal circulation pipe until the predicted volume of partially filled water in the outlet pipe is less than a second preset partially filled water volume threshold. The method further includes: Based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water standby time, and the historical average volume of partially submerged water, the minimum temperature of partially submerged water in the outlet pipe is predicted. Based on the predicted minimum temperature of the intermittent water in the outlet pipeline and the preset mapping relationship between the intermittent water temperature and the valve opening, the target valve opening of the bypass regulating valve is determined. When the predicted volume of partially filled water in the outlet pipe exceeds the first preset partially filled water volume threshold, the bypass regulating valve is opened to form an internal circulation pipe connecting the inlet pipe, the mixed-air storage tank, the outlet pipe, and the bypass connection pipe. Water circulates within this internal circulation pipe until the predicted volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold, including: When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened according to the target valve opening degree so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connection pipe form an internal circulation pipe. The water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0052] For details not covered in this embodiment, please refer to the above embodiments. Figure 4 As shown, the method for identifying partially cooked water includes: S310, acquire the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially saturated water.

[0053] S320. Based on the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water storage temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially filled water, predict the volume of partially filled water in the outlet water pipe.

[0054] S330. Based on the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water storage temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially submerged water, predict the minimum temperature of partially submerged water in the outlet water pipe.

[0055] Optionally, based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-air storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotational speed of the water pump assembly in the outlet pipe, historical standby time, and the historical average volume of partially submerged water, the minimum temperature of partially submerged water in the outlet pipe is predicted, including: the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-air storage tank, and the outlet water temperature in the outlet pipe. The rate of change, the rotation speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water are normalized. The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, water storage temperature in the mixed aeration tank, outlet water temperature change rate, water pump assembly rotation speed on the outlet pipe, historical water usage standby time, and historical average volume of partially filled water are then subjected to weighted linear processing to obtain the predicted value of the lowest temperature of partially filled water in the outlet pipe.

[0056] Furthermore, the normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, water temperature in the mixed-aeration storage tank, outlet water temperature change rate, outlet pump unit speed, historical standby time, and historical average volume of partially filled water are weighted linearly processed to obtain the predicted value of the lowest temperature of partially filled water in the outlet water pipe, including: according to the calculation formula T min(yc) = W T1 ×T in +W T2 ×Q + W T3 × + W T4 ×T tank + W T5 × + W T6 ×n + W T7 ×T off + W T8 ×V mix(pj) +b T The predicted minimum temperature T of the water trapped in the outlet pipe was calculated. min(yc) Among them, T in Q represents the normalized inlet water temperature in the inlet pipe, and Q represents the normalized water flow rate in the inlet pipe. T represents the rate of change of water flow in the inlet pipe after normalization. tank T represents the water temperature inside the mixed-gas storage tank after normalization treatment. out This indicates the normalized outlet water temperature within the outlet pipe. T represents the rate of change of water temperature in the normalized outlet pipeline, where n represents the rotational speed of the pump assembly in the normalized outlet pipeline. off V represents the historical water usage standby time after normalization. mix(pj) W represents the average historical volume of intercalary water after normalization. T1 W T2 W T3 W T4 W T5 W T6 W T7 With W T8 All are weighting coefficients, b T This is a constant bias term.

[0057] Specifically, please refer to the above embodiments for the same content; this embodiment will not repeat it here. It should also be noted that W... T1 W T2 W T3 W T4 WT5 W T6 W T7 With W T8 These weighting coefficients were obtained through offline training using data from numerous household water usage scenarios and are stored in the main controller. During operation, the gas water heater can perform weighted linear processing without requiring an internet connection, enabling rapid calculation of the predicted minimum temperature T of the untreated water in the outlet pipe. min(yc) .

[0058] It should also be noted that S320 is the step of predicting the volume of the water mixed in the water pipe based on the eight-dimensional feature vector, and S330 is the step of predicting the minimum temperature of the water mixed in the water pipe based on the eight-dimensional feature vector. In this embodiment, there are no specific requirements or special limitations on the execution order of S320 and S330. For example, S320 can be executed first and then S330 can be executed, or S330 can be executed first and then S320 can be executed, or S320 and S330 can be executed simultaneously.

[0059] S340. Based on the predicted minimum temperature of the intermittent water in the outlet pipeline and the preset mapping relationship between the intermittent water temperature and the valve opening, determine the target valve opening of the bypass regulating valve.

[0060] The preset mapping relationship between the temperature of the partially submerged water in the outlet pipe and the valve opening of the bypass regulating valve is pre-set. There is a one-to-one correspondence between the temperature of the partially submerged water in the outlet pipe and the valve opening of the bypass regulating valve. For example, for a certain minimum temperature of partially submerged water in the outlet pipe, a corresponding valve opening of the bypass regulating valve can be uniquely determined. Or, for example, for a certain valve opening of the bypass regulating valve, a corresponding minimum temperature of partially submerged water in the outlet pipe can be uniquely determined. Specifically, based on the predicted value of the minimum temperature of partially submerged water in the outlet pipe, a search can be performed in the corresponding preset mapping relationship to determine the target valve opening of the bypass regulating valve corresponding to the predicted value of the minimum temperature of partially submerged water in the outlet pipe. Subsequently, according to the target valve opening, when the predicted value of the volume of partially submerged water in the outlet pipe is greater than a first preset partially submerged water volume threshold, the bypass regulating valve is opened accordingly, thereby adjusting the water flow rate in the bypass connection pipe.

[0061] S350. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened according to the target valve opening degree so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connection pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0062] In addition, by way of example, the duration of mixed water in the outlet pipe can also be predicted based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water standby time, and the historical average volume of mixed water.

[0063] Optionally, the duration of intermittent water in the outlet pipe can be predicted based on the inlet water temperature, inlet water flow rate, inlet water flow rate change rate, storage water temperature in the mixing tank, outlet water temperature change rate, pump speed in the outlet pipe, historical standby time, and historical average volume of intermittent water. This includes: the inlet water temperature, inlet water flow rate, inlet water flow rate change rate, storage water temperature in the mixing tank, and outlet water temperature. The rate of change, the rotation speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of mixed water are normalized. The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, water storage temperature in the mixed water storage tank, outlet water temperature change rate, water pump assembly rotation speed on the outlet pipe, historical water usage standby time, and historical average volume of mixed water are then subjected to weighted linear processing to obtain the predicted value of the duration of mixed water in the outlet pipe.

[0064] Furthermore, the normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, water temperature in the mixed-air storage tank, outlet water temperature change rate, outlet water pump component speed, historical standby time, and historical average volume of partially filled water are weighted linearly processed to obtain a predicted value for the duration of partially filled water in the outlet water pipe, including: based on the calculation formula t dur(yc) = W t1 ×T in +W t2 ×Q + W t3 × + W t4 ×T tank + W t5 × + W t6 ×n + W t7 ×T off + W t8 ×V mix(pj) +b t The predicted duration t of the intermittent water in the outlet pipe was calculated. dur(yc) Among them, T inQ represents the normalized inlet water temperature in the inlet pipe, and Q represents the normalized water flow rate in the inlet pipe. T represents the rate of change of water flow in the inlet pipe after normalization. tank T represents the water temperature inside the mixed-gas storage tank after normalization treatment. out This indicates the normalized outlet water temperature within the outlet pipe. T represents the rate of change of water temperature in the normalized outlet pipeline, where n represents the rotational speed of the pump assembly in the normalized outlet pipeline. off V represents the historical water usage standby time after normalization. mix(pj) W represents the average historical volume of intercalary water after normalization. t1 W t2 W t3 W t4 W t5 W t6 W t7 With W t8 All are weighting coefficients, b t This is a constant bias term.

[0065] Specifically, please refer to the above embodiments for the same content; this embodiment will not repeat it here. It should also be noted that W... t1 W t2 W t3 W t4 W t5 W t6 W t7 With W t8 These weighting coefficients were obtained through offline training using data from numerous household water usage scenarios and are stored in the main controller. The gas water heater operates without requiring an internet connection, enabling the rapid calculation of the predicted duration t of the trapped water in the outlet pipe. dur(yc) .

[0066] Based on this, the target valve opening of the bypass regulating valve can also be determined according to the predicted duration of the intermittent water in the outlet pipeline and the preset mapping relationship between the duration of the intermittent water and the valve opening.

[0067] The preset mapping relationship between the duration of the partially filled water in the outlet pipe and the valve opening of the bypass regulating valve is pre-set. For example, for a given duration of partially filled water in the outlet pipe, a corresponding valve opening of the bypass regulating valve can be uniquely determined; conversely, for a given valve opening of the bypass regulating valve, a corresponding duration of partially filled water in the outlet pipe can be uniquely determined. Specifically, based on the predicted value of the duration of partially filled water in the outlet pipe, a search can be performed within the corresponding preset mapping relationship to determine the target valve opening of the bypass regulating valve corresponding to the predicted duration of partially filled water in the outlet pipe. Subsequently, according to this target valve opening, when the predicted volume of partially filled water in the outlet pipe exceeds a first preset partially filled water volume threshold, the bypass regulating valve is opened, thereby adjusting the water flow rate in the bypass connection pipe. Furthermore, by way of example, the valve opening of the bypass regulating valve can be precisely controlled by simultaneously using the predicted value of the lowest temperature of the water in the outlet pipe and the predicted value of the duration of the water in the outlet pipe, so as to prevent the outlet water temperature from being too low.

[0068] Figure 5 This is a flowchart illustrating another method for identifying partially filled water in a gas water heater according to an embodiment of the present invention. This embodiment is an optimization based on the above embodiment. Optionally, after predicting the volume of partially filled water in the outlet pipe based on the inlet water temperature, the water flow rate, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed gas storage tank, the rate of change of the outlet water temperature, the rotation speed of the water pump assembly in the outlet pipe, the historical standby time, and the historical average volume of partially filled water, the method further includes: Determine the actual volume of untreated water in the outlet pipe; Based on the actual value of the volume of water trapped in the outlet pipe and the predicted value of the volume of water trapped in the outlet pipe, the self-learning value of the volume of water trapped in the outlet pipe is determined. Update the historical average value of the volume of partially filled water in the outlet pipe based on the self-learning value of the volume of partially filled water.

[0069] For details not covered in this embodiment, please refer to the above embodiments. Figure 5 As shown, the method for identifying partially cooked water includes: S410, acquire the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially saturated water.

[0070] S420. Based on the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water storage temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water usage standby time, and the historical average volume of partially filled water, predict the volume of partially filled water in the outlet water pipe.

[0071] S430. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0072] S440. Determine the actual volume of untreated water in the outlet pipe.

[0073] Specifically, during the operation of the gas water heater, i.e., the normal water usage phase, the presence of submerged water can be determined based on the outlet water temperature in the outlet pipe, as well as the start and end times of this submerged water. For example, the start time of submerged water can be understood as the opening time of the outlet valve, or the moment the temperature first drops into the judgment range. Similarly, the end time of submerged water can be understood as the moment the temperature first rises above the upper limit of the judgment range. Simultaneously, the real-time water flow rate in the inlet pipe between the start and end times of submerged water also needs to be obtained. The actual volume of submerged water in the outlet pipe can be understood as the integral of the real-time water flow rate in the inlet pipe over time between the start and end times of submerged water during a single water usage cycle.

[0074] S450. Based on the actual value of the volume of partially filled water in the outlet pipe and the predicted value of the volume of partially filled water in the outlet pipe, determine the self-learning value of the volume of partially filled water in the outlet pipe.

[0075] Optionally, based on the actual value of the volume of partially filled water in the outlet pipe and the predicted value of the volume of partially filled water in the outlet pipe, a self-learning value of the volume of partially filled water in the outlet pipe is determined, including: obtaining the difference between the actual value of the volume of partially filled water in the outlet pipe and the predicted value of the volume of partially filled water in the outlet pipe; and calculating the value according to the formula V. mix(zxx) = V mix(yc) +λ×e V The self-learning value V of the volume of water trapped in the outlet pipe is calculated. mix(zxx) Among them, V mix(yc) e represents the predicted volume of untreated water in the outlet pipe. V λ represents the difference between the actual volume of untreated water in the outlet pipe and the predicted volume of untreated water in the outlet pipe, where λ represents the self-learning coefficient.

[0076] Specifically, the self-learning value V of the volume of intermittent water in the outlet pipe. mix(zxx) This can also be understood as using e V This error value is simply compensated to obtain the final predicted value for the actual use by the main controller. For example, the self-learning coefficient λ can be 0.2.

[0077] At the same time, the actual value of the lowest temperature of the partially submerged water in the outlet pipe can be determined, and the self-learning value of the lowest temperature of the partially submerged water in the outlet pipe can be determined based on the actual value of the lowest temperature of the partially submerged water in the outlet pipe and the predicted value of the lowest temperature of the partially submerged water in the outlet pipe.

[0078] Specifically, when the gas water heater is in operation, that is, during the normal water usage phase, the presence of submerged water can be determined based on the water temperature in the outlet pipe, as well as the lowest temperature corresponding to the presence of submerged water.

[0079] Optionally, based on the actual value and the predicted value of the lowest temperature of the partially submerged water in the outlet pipe, a self-learning value of the lowest temperature of the partially submerged water in the outlet pipe is determined, including: obtaining the difference between the actual value and the predicted value of the lowest temperature of the partially submerged water in the outlet pipe; and calculating the value according to the formula T. min(zxx) = T min(yc) +λ×e T The self-learning value T of the lowest temperature of the intermittent water in the outlet pipe was calculated. min(zxx) Among them, T min(yc) e represents the predicted minimum temperature of the partially stagnant water in the outlet pipe. T λ represents the difference between the actual value of the lowest temperature of the partially submerged water in the outlet pipe and the predicted value of the lowest temperature of the partially submerged water in the outlet pipe, where λ represents the self-learning coefficient.

[0080] Specifically, the self-learning value T of the lowest temperature of the partially stagnant water in the outlet pipe. min(zxx) This can also be understood as using e T This error value is simply compensated to obtain the final predicted value for the actual use by the main controller. For example, the self-learning coefficient λ can be 0.2.

[0081] At the same time, the actual duration of the water leakage in the outlet pipe can be determined, and the self-learning value of the duration of the water leakage in the outlet pipe can be determined based on the actual duration of the water leakage in the outlet pipe and the predicted duration of the water leakage in the outlet pipe.

[0082] Specifically, when the gas water heater is in operation, that is, during the normal water usage phase, the presence of submerged water can be determined based on the water temperature in the outlet pipe, as well as the duration of submerged water presence.

[0083] Optionally, based on the actual duration of the partially filled water in the outlet pipe and the predicted duration of the partially filled water in the outlet pipe, a self-learning value for the duration of the partially filled water in the outlet pipe is determined, including: obtaining the difference between the actual duration of the partially filled water in the outlet pipe and the predicted duration of the partially filled water in the outlet pipe; and calculating the value based on the formula t. dur(zxx) = t dur(yc) +λ×e t The self-learning value t for the duration of the intermittent water in the outlet pipe was calculated. dur(zxx) ; where t dur(yc) e represents the predicted duration of the intermittent water in the outlet pipe. t λ represents the difference between the actual duration of the intermittent water in the outlet pipe and the predicted duration of the intermittent water in the outlet pipe, where λ represents the self-learning coefficient.

[0084] Specifically, the self-learning value t for the duration of intermittent water in the outlet pipe. dur(zxx) This can also be understood as using e t This error value is simply compensated to obtain the final predicted value for the actual use by the main controller. For example, the self-learning coefficient λ can be 0.2.

[0085] In a more easily understood way, after each water usage, the main controller can compare the actual volume of partially submerged water in the outlet pipe with the predicted volume, the actual duration of the submerged water with the predicted duration, and the actual lowest temperature of the submerged water with the predicted lowest temperature. It can also continuously calculate the degree of error deviation of the submerged water and store the data in a historical sample database. This allows the gas water heater to perform online incremental self-learning optimization, predicting the severity of submerged water without needing a network connection. It automatically and gradually adapts to the user's home's pipe length, water pressure conditions, and water usage habits. The accuracy of submerged water identification is more than 40% higher than traditional threshold control, and the subsequent prediction accuracy continues to improve with usage time, making the next prediction more accurate. This self-learning also improves temperature control accuracy and user experience, enhancing the versatility and consistency of the submerged water identification method.

[0086] S460. Update the historical average value of the volume of partially filled water in the outlet pipe based on the self-learning value of the volume of partially filled water.

[0087] For example, the predicted volume of partially filled water in the outlet pipe can be 139 ml, and the actual volume of partially filled water in the outlet pipe can be 179 ml. Therefore, the self-learning value V of the partially filled water volume in the outlet pipe is...mix(zxx) This corresponds to 147 ml. Based on this, the self-learning value of the volume of partially filled water in the outlet pipe can be used to update the average historical volume of partially filled water. For example, taking the average volume of partially filled water from the previous five measurements as 208 ml as an example, according to the calculation formula V... mix(pj) '=[ V mix(pj) ×(5-1)+ V mix(zxx) ] / 5 = 202.2 ml, and the updated historical average volume of intermittent water is calculated. mix(pj) The updated historical average volume of intermittent water, V mix(pj) 'This can be used as the average historical volume of intermittent water before the next prediction.'

[0088] It should also be noted that S430 is the step of opening or closing the internal circulation process based on the predicted value of the volume of water trapped in the outlet pipe, and S440-S460 are the steps of the system self-learning process based on the predicted value of the volume of water trapped in the outlet pipe. In this embodiment, there are no specific requirements or special limitations on the execution order of S430 and S440-S460 (these three steps S440, S450, and S460 must be executed in sequence). For example, S430 can be executed first, followed by S440-S460, or S440-S460 can be executed first, followed by S430, or S430 and S440-S460 can be executed simultaneously.

[0089] Figure 6 This is a schematic diagram of the structure of a gas water heater half-filled water identification device provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the gas water heater includes an inlet pipe 10, an outlet pipe 30, a mixed-gas storage tank 40, and a bypass connection pipe 70. The first end of the inlet pipe 10 is connected to the water inlet, and the second end is connected to the liquid inlet of the mixed-gas storage tank 40. The first end of the outlet pipe 30 is connected to the gas-liquid outlet of the mixed-gas storage tank 40, and the second end is connected to the water outlet. A water pump assembly 31 is installed on the outlet pipe 30. The first end of the bypass connection pipe 70 is connected to the second end of the outlet pipe 30, and the second end of the bypass connection pipe 70 is connected to the first end of the inlet pipe 10. A bypass regulating valve 71 is installed on the bypass connection pipe 70. This gas water heater's partial water detection device is applicable to situations where partial water is detected and eliminated during the standby period of the gas water heater or the initial period after the user turns on the gas water heater. This partial water detection device can be implemented in hardware and / or software and is generally configured in the control board. like Figure 6 As shown, the half-cooked water identification device includes: Data acquisition module 510 is used to acquire the inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in the mixing tank, outlet water temperature change rate, outlet pump speed, historical standby time, and historical average volume of partially filled water in the outlet pipe; volume prediction module 520 is used to predict the volume of water based on the inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in the mixing tank, and outlet water temperature change rate. The system uses the following parameters to predict the volume of mixed water in the outlet pipeline: the conversion rate, the rotation speed of the water pump assembly on the outlet pipeline, the historical water usage standby time, and the historical average volume of mixed water. The internal circulation control module 530 is used to open the bypass regulating valve when the predicted value of the volume of mixed water in the outlet pipeline is greater than the first preset volume threshold of mixed water. This allows the inlet pipeline, the mixed-air storage tank, the outlet pipeline, and the bypass connection pipeline to form an internal circulation pipeline, in which water flows in a circulation until the predicted value of the volume of mixed water in the outlet pipeline is less than the second preset volume threshold of mixed water.

[0090] The technical solution in this invention adds a multi-dimensional sensor array and an embedded submerged water identification chip to the internal circulation pipeline structure of the gas water heater. It performs targeted modeling of the presence of submerged water, proposes quantitative judgment criteria and mathematical calculation formulas for submerged water, and identifies and predicts parameters such as the volume of submerged water by collecting the above eight-dimensional feature vectors in real time. Then, it accurately eliminates submerged water by preheating in the internal circulation process. During the water use process, it can also flush and eliminate submerged water in real time, ultimately achieving the effects of significantly reducing the volume of submerged water, stabilizing the outlet water temperature, and accurately keeping the water warm in standby mode.

[0091] Based on the above technical solution, optionally, the volume prediction module 520 may specifically include a first normalization processing unit and a first weighted processing unit. The first normalization processing unit is used to normalize the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the water flow rate change rate in the inlet pipe, the water storage temperature in the mixed-air storage tank, the water temperature change rate in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water. The first weighted processing unit is used to perform weighted linear processing on the normalized inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the water flow rate change rate in the inlet pipe, the water storage temperature in the mixed-air storage tank, the water temperature change rate in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water to obtain the predicted value of the volume of partially filled water in the outlet pipe.

[0092] Optionally, the first weighted processing unit may specifically include a first weighted processing subunit, which is used to calculate V according to the formula. mix(yc) =W V1 ×Tin + W V2 ×Q+ W V3 × + W V4 ×T tank + W V5 × + W V6 ×n+W V7 ×T off + W V8 ×V mix(pj) + b V The predicted value V of the volume of water trapped in the outlet pipe was calculated. mix(yc) Among them, T in Q represents the normalized inlet water temperature in the inlet pipe, and Q represents the normalized water flow rate in the inlet pipe. T represents the rate of change of water flow in the inlet pipe after normalization. tank T represents the water temperature inside the mixed-gas storage tank after normalization treatment. out This indicates the normalized outlet water temperature within the outlet pipe. T represents the rate of change of water temperature in the normalized outlet pipeline, where n represents the rotational speed of the pump assembly in the normalized outlet pipeline. off V represents the historical water usage standby time after normalization. mix(pj) W represents the average historical volume of intercalary water after normalization. V1 W V2 W V3 W V4 W V5 W V6 W V7 With W V8 All are weighting coefficients, b V This is a constant bias term.

[0093] Optionally, the partially filled water identification device further includes a minimum temperature prediction module and a valve opening determination module. The minimum temperature prediction module is used to predict the minimum temperature of the partially filled water in the outlet pipe based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-air storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water. The valve opening determination module is used to determine the minimum temperature of the partially filled water in the outlet pipe based on the predicted value of the minimum temperature of the partially filled water, and the... The preset mapping relationship between raw water temperature and valve opening determines the target valve opening of the bypass regulating valve; the internal circulation control module 530 may specifically include an internal circulation control unit, which is used to open the bypass regulating valve according to the target valve opening when the predicted value of the volume of mixed water in the outlet pipe is greater than the first preset volume threshold of mixed water, so that the inlet pipe, the mixed water storage tank, the outlet pipe and the bypass connection pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of mixed water in the outlet pipe is less than the second preset volume threshold of mixed water.

[0094] Optionally, the minimum temperature prediction module may specifically include a second normalization processing unit and a second weighted processing unit. The second normalization processing unit is used to normalize the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-air storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water. The second weighted processing unit is used to perform weighted linear processing on the normalized inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-air storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water to obtain the predicted value of the minimum temperature of partially filled water in the outlet pipe.

[0095] Optionally, the device for identifying partially filled water also includes an actual volume determination module, a self-learning volume determination module, and a historical data update module. The actual volume determination module is used to determine the actual value of the partially filled water volume in the outlet pipe. The self-learning volume determination module is used to determine the self-learning value of the partially filled water volume in the outlet pipe based on the actual value and the predicted value of the partially filled water volume in the outlet pipe. The historical data update module is used to update the average value of the historical partially filled water volume based on the self-learning value of the partially filled water volume in the outlet pipe.

[0096] Optionally, the self-learning volume determination module may specifically include a difference acquisition unit and a self-learning volume determination unit. The difference acquisition unit is used to acquire the difference between the actual value of the volume of intermittent water in the outlet pipe and the predicted value of the volume of intermittent water in the outlet pipe; the self-learning volume determination unit is used to calculate the volume according to the formula V. mix(zxx) = V mix(yc) +λ×e V The self-learning value V of the volume of water trapped in the outlet pipe is calculated. mix(zxx) Among them, V mix(yc) e represents the predicted volume of untreated water in the outlet pipe. V λ represents the difference between the actual volume of untreated water in the outlet pipe and the predicted volume of untreated water in the outlet pipe, where λ represents the self-learning coefficient.

[0097] The gas water heater half-filled water identification device provided in the embodiments of the present invention can execute the gas water heater half-filled water identification method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0098] Figure 7 This is a schematic diagram of the structure of a terminal device provided in an embodiment of the present invention, such as... Figure 7 As shown, the terminal device provided in this embodiment of the invention includes: one or more processors 610 and a storage device 620; the processor 610 in the terminal device may be one or more, Figure 7 Taking a processor 610 as an example; storage device 620 is used to store one or more programs; when one or more programs are executed by one or more processors 610, the one or more processors 610 implement the half-cooked water identification method for gas water heaters provided in any of the embodiments of the present invention.

[0099] The terminal device may also include an input device 630 and an output device 640.

[0100] The processor 610, storage device 620, input device 630, and output device 640 in this terminal device can be connected via a bus or other means. Figure 7 Taking the example of a connection between China and Israel via a bus.

[0101] The storage device 620 in the terminal device serves as a readable storage medium and can be used to store one or more programs. These programs can be software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the method for identifying partially filled water in a gas water heater provided in this embodiment of the invention (e.g., attached...). Figure 6The illustrated device for identifying partially submerged water includes: a data acquisition module 510, used to acquire the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the storage water temperature in the mixed-air storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, historical water usage standby time, and the historical average volume of partially submerged water; and a volume prediction module 520, used to predict the volume of partially submerged water based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the storage water temperature in the mixed-air storage tank, and the average volume of partially submerged water in the outlet pipe. The system uses the outflow temperature change rate, the rotational speed of the water pump assembly on the outflow pipe, historical standby time, and historical average volume of partially filled water to predict the volume of partially filled water in the outflow pipe. An internal circulation control module 530 is used to open a bypass regulating valve when the predicted volume of partially filled water in the outflow pipe exceeds a first preset threshold. This allows the inflow pipe, mixed-air storage tank, outflow pipe, and bypass connection pipe to form an internal circulation pipe, in which water circulates until the predicted volume of partially filled water in the outflow pipe is less than a second preset threshold. The processor 610 executes various functional applications and data processing of the terminal device by running software programs, instructions, and modules stored in the storage device 620, thus realizing the partially filled water identification method for gas water heaters in the above method embodiment.

[0102] Storage device 620 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on device usage. Furthermore, storage device 620 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, storage device 620 may further include memory remotely located relative to processor 610, which can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0103] Input device 630 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the device. Output device 640 may include display devices such as a display screen.

[0104] Furthermore, when one or more programs included in the aforementioned device are executed by one or more processors 610, the programs perform the following operations: The following data are collected: inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in mixed water tank, outlet water temperature change rate, outlet water pump assembly speed, historical water usage standby time, and historical average volume of partially saturated water. Based on the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water standby time, and the historical average volume of partially submerged water, the volume of partially submerged water in the outlet water pipe is predicted. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe. The water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0105] This invention also provides a readable storage medium storing a computer program thereon. When executed by a processor, the program performs the method for identifying partially filled water in a gas water heater provided in any of the embodiments of this invention. The method for identifying partially filled water includes: The following data are collected: inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in mixed water tank, outlet water temperature change rate, outlet water pump assembly speed, historical water usage standby time, and historical average volume of partially saturated water. Based on the inlet water temperature in the inlet water pipe, the water flow rate in the inlet water pipe, the rate of change of the water flow rate in the inlet water pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet water pipe, the rotation speed of the water pump assembly in the outlet water pipe, the historical water standby time, and the historical average volume of partially submerged water, the volume of partially submerged water in the outlet water pipe is predicted. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe. The water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

[0106] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a readable storage medium. A readable storage medium can take many forms, including but not limited to: electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable CD-ROMs, optical storage devices, magnetic storage devices, or any suitable combination thereof. A readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0107] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0108] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, radio frequency (RF), etc., or any suitable combination thereof.

[0109] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—as well as conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including but not limited to a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0110] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0111] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for identifying partially filled water in a gas water heater, characterized in that, The gas water heater includes an inlet pipe, an outlet pipe, a gas-liquid mixing tank, and a bypass connection pipe. The first end of the inlet pipe is connected to a water inlet, and the second end is connected to the liquid inlet of the gas-liquid mixing tank. The first end of the outlet pipe is connected to the gas-liquid outlet of the gas-liquid mixing tank, and the second end is connected to a water outlet. A water pump assembly is installed on the outlet pipe. The first end of the bypass connection pipe is connected to the second end of the outlet pipe, and the second end of the bypass connection pipe is connected to the first end of the inlet pipe. A bypass regulating valve is installed on the bypass connection pipe. The method for identifying partially cooked water includes: The following parameters are obtained: inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature, outlet water temperature change rate, outlet water speed, pump speed, historical water usage standby time, and historical average volume of partially filled water. The volume of mixed water in the outlet pipe is predicted based on the inlet water temperature, the inlet water flow rate, the rate of change of the inlet water flow rate, the storage water temperature in the mixed water tank, the rate of change of the outlet water temperature, the rotation speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of mixed water. When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

2. The method for identifying partially cooked water according to claim 1, characterized in that, Based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-aeration water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotational speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water, the volume of partially filled water in the outlet pipe is predicted, including: The following parameters are normalized: inlet water temperature in the inlet pipe, water flow rate in the inlet pipe, water flow rate change rate in the inlet pipe, water temperature in the mixed-air storage tank, water temperature change rate in the outlet pipe, water pump assembly speed in the outlet pipe, historical water usage standby time, and historical average volume of partially saturated water. The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in the mixed-air storage tank, outlet water temperature change rate, outlet water pump assembly speed, historical water standby time, and historical average volume of partially filled water are weighted and linearly processed to obtain the predicted value of the partially filled water volume in the outlet water pipeline.

3. The method for identifying partially cooked water according to claim 2, characterized in that, The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, water temperature in the mixed-aeration water tank, outlet water temperature change rate, outlet water pump assembly speed, historical water standby time, and historical average volume of partially filled water are weighted and linearly processed to obtain a predicted value of the partially filled water volume in the outlet water pipe, including: According to the calculation formula V mix(yc) =W V1 ×T in + W V2 ×Q+ W V3 × + W V4 ×T tank + W V5 × + W V6 ×n+W V7 ×T off + W V8 ×V mix(pj) + b V The predicted value V of the volume of intermittent water in the outlet pipe was calculated. mix(yc) Among them, T in Q represents the normalized inlet water temperature in the inlet pipe, and Q represents the normalized water flow rate in the inlet pipe. T represents the rate of change of water flow in the inlet pipeline after normalization. tank T represents the water temperature in the mixed-gas storage tank after normalization. out This indicates the normalized water temperature inside the outlet pipe. T represents the rate of change of water temperature in the outlet pipeline after normalization, n represents the rotational speed of the pump assembly in the outlet pipeline after normalization, and T represents the normalized rotational speed of the pump assembly. off V represents the normalized historical water usage standby time. mix(pj) W represents the average volume of the historical intercalated water after normalization. V1 W V2 W V3 W V4 W V5 W V6 W V7 With W V8 All are weighting coefficients, b V This is a constant bias term.

4. The method for identifying partially cooked water according to claim 1, characterized in that, When the predicted volume of partially filled water in the outlet pipe is greater than a first preset partially filled water volume threshold, the bypass regulating valve is opened to form an internal circulation pipe with the inlet pipe, the mixed-air storage tank, the outlet pipe, and the bypass connection pipe. Water circulates in the internal circulation pipe until the predicted volume of partially filled water in the outlet pipe is less than a second preset partially filled water volume threshold. The process further includes: Based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-air storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially submerged water, the minimum temperature of partially submerged water in the outlet pipe is predicted. Based on the predicted minimum temperature of the intermittent water in the outlet pipeline and the preset mapping relationship between the intermittent water temperature and the valve opening, the target valve opening of the bypass regulating valve is determined. When the predicted volume of partially filled water in the outlet pipe is greater than a first preset partially filled water volume threshold, the bypass regulating valve is opened to form an internal circulation pipe with the inlet pipe, the mixed-air storage tank, the outlet pipe, and the bypass connection pipe. Water circulates in the internal circulation pipe until the predicted volume of partially filled water in the outlet pipe is less than a second preset partially filled water volume threshold, including: When the predicted value of the volume of partially filled water in the outlet pipe is greater than the first preset partially filled water volume threshold, the bypass regulating valve is opened according to the target valve opening degree, so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of partially filled water in the outlet pipe is less than the second preset partially filled water volume threshold.

5. The method for identifying partially cooked water according to claim 4, characterized in that, Based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-aeration water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotational speed of the water pump assembly in the outlet pipe, the historical standby time for water use, and the historical average volume of partially stagnant water, the minimum temperature of partially stagnant water in the outlet pipe is predicted, including: The following parameters are normalized: inlet water temperature in the inlet pipe, water flow rate in the inlet pipe, water flow rate change rate in the inlet pipe, water temperature in the mixed-air storage tank, water temperature change rate in the outlet pipe, water pump assembly speed in the outlet pipe, historical water usage standby time, and historical average volume of partially saturated water. The normalized inlet water temperature, inlet water flow rate, inlet water flow rate change rate, inlet water temperature in the mixed-aeration water tank, outlet water temperature change rate, outlet water pump assembly speed, historical water standby time, and historical average volume of partially filled water are weighted and linearly processed to obtain the predicted value of the lowest temperature of partially filled water in the outlet water pipe.

6. The method for identifying partially cooked water according to claim 1, characterized in that, Based on the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed-aeration water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotational speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water, after predicting the volume of partially filled water in the outlet pipe, the following further includes: Determine the actual volume of the untreated water in the outlet pipe; Based on the actual value of the volume of water trapped in the outlet pipe and the predicted value of the volume of water trapped in the outlet pipe, the self-learning value of the volume of water trapped in the outlet pipe is determined. The average value of the historical volume of partially filled water is updated based on the self-learning value of the volume of partially filled water in the outlet pipe.

7. The method for identifying partially cooked water according to claim 6, characterized in that, Based on the actual volume of partially filled water in the outlet pipe and the predicted volume of partially filled water in the outlet pipe, a self-learning value for the volume of partially filled water in the outlet pipe is determined, including: The difference between the actual volume of water trapped in the outlet pipe and the predicted volume of water trapped in the outlet pipe is obtained. According to the calculation formula V mix(zxx) = V mix(yc) +λ×e V The self-learning value V of the volume of intermittent water in the outlet pipe is calculated. mix(zxx) Among them, V mix(yc) e represents the predicted volume of trapped water within the outlet pipe. V λ represents the difference between the actual volume of intermittent water in the outlet pipe and the predicted volume of intermittent water in the outlet pipe, where λ represents the self-learning coefficient.

8. A device for identifying partially filled water in a gas water heater, characterized in that, The gas water heater includes an inlet pipe, an outlet pipe, a gas-liquid mixing tank, and a bypass connection pipe. The first end of the inlet pipe is connected to a water inlet, and the second end is connected to the liquid inlet of the gas-liquid mixing tank. The first end of the outlet pipe is connected to the gas-liquid outlet of the gas-liquid mixing tank, and the second end is connected to a water outlet. A water pump assembly is installed on the outlet pipe. The first end of the bypass connection pipe is connected to the second end of the outlet pipe, and the second end of the bypass connection pipe is connected to the first end of the inlet pipe. A bypass regulating valve is installed on the bypass connection pipe. The device for identifying partially cooked water includes: The data acquisition module is used to acquire the inlet water temperature in the inlet pipe, the water flow rate in the inlet pipe, the rate of change of the water flow rate in the inlet pipe, the water temperature in the mixed water storage tank, the rate of change of the outlet water temperature in the outlet pipe, the rotation speed of the water pump assembly in the outlet pipe, the historical water usage standby time, and the historical average volume of partially filled water. The volume prediction module is used to predict the volume of mixed water in the outlet pipe based on the inlet water temperature, the inlet water flow rate, the rate of change of the inlet water flow rate, the storage water temperature in the mixed water tank, the rate of change of the outlet water temperature, the rotation speed of the water pump assembly on the outlet pipe, the historical water usage standby time, and the historical average volume of mixed water. The internal circulation control module is used to open the bypass regulating valve when the predicted value of the volume of mixed water in the outlet pipe is greater than the first preset volume threshold of mixed water, so that the inlet pipe, the mixed air storage tank, the outlet pipe and the bypass connecting pipe form an internal circulation pipe, and the water flows in the internal circulation pipe until the predicted value of the volume of mixed water in the outlet pipe is less than the second preset volume threshold of mixed water.

9. A terminal device, characterized in that, include: One or more processors; Storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the half-filled water identification method for gas water heaters as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the method for identifying partially filled water in a gas water heater as described in any one of claims 1-7.

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