Water heater control methods, devices, control equipment, and water heater equipment

Abstract

This application relates to a control method, apparatus, control device, equipment, computer-readable storage medium, and computer program product for a water heater. The method includes: acquiring the outlet temperature of hot water in the heating pipes of the water heater; calibrating the outlet temperature based on outlet temperature correction parameters to obtain a calibrated corrected outlet temperature; the outlet temperature correction parameters are obtained based on the outlet temperature obtained by the hot water flowing through the heating pipes and a reference temperature of the hot water; controlling the operating power of the water heater's heating system according to the target temperature and the corrected outlet temperature, so that the heated corrected outlet temperature reaches the target temperature, wherein the heating system is used to heat the water in the heating pipes. This method enables more precise control of the heating power of the heating system, resulting in a higher consistency between the actual temperature of the hot water to be discharged and the user-set target temperature, thereby improving the user's water comfort.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a control method, apparatus, water heater control device, water heater equipment, computer-readable storage medium, and computer program product for a water heater. Background Technology

[0002] Currently, with the improvement of people's living standards, water heaters have gradually become an indispensable household appliance. Water heaters include multiple categories such as electric water heaters, gas water heaters, and air source water heaters to meet different user needs.

[0003] However, as water heaters are used for longer periods, the internal temperature sensor will gradually age, leading to a decrease in the accuracy of the water outlet temperature detection. This results in a discrepancy between the water outlet temperature and the set temperature, reducing the user's comfort when using the water. Summary of the Invention

[0004] Based on this, it is necessary to provide a control method, device, water heater, electronic device, computer-readable storage medium, and computer program product for a water heater that can calibrate the detected value of the outlet water temperature and improve the consistency between the outlet water temperature and the target temperature, in order to address the above-mentioned technical problems.

[0005] Firstly, this application provides a method for controlling a water heater. The method includes:

[0006] Obtain the outlet temperature of the hot water in the heating pipes of the water heater;

[0007] The outlet water temperature is calibrated based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature; the outlet water temperature correction parameters are obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water.

[0008] The operating power of the water heater's heating system is controlled according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipe.

[0009] In one embodiment, the method for determining the outlet water temperature correction parameter includes:

[0010] The water heater is controlled to enter a self-circulation mode; in the self-circulation mode, the water in the water heater circulates within the heating pipe and the circulation pipe.

[0011] The heating system is controlled to heat the water in the heating pipe, and the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe are obtained to obtain multiple temperature difference arrays; the temperature difference arrays include the reference temperature and the outlet water temperature at the same time.

[0012] The outlet water temperature correction parameter is determined based on the temperature difference array.

[0013] In one embodiment, the heating system is controlled to heat the water in the heating pipe, and a reference temperature in the circulation pipe and an outlet water temperature in the heating pipe are obtained to obtain multiple temperature difference arrays, including:

[0014] The heating system is controlled to heat the water in the heating pipe and a reference temperature is obtained in the circulation pipe.

[0015] When the reference temperature reaches each preset calibration temperature, the outlet water temperature in the heating pipe is obtained; the difference between two adjacent preset calibration temperatures is equal;

[0016] A temperature difference array is obtained based on the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe.

[0017] In one embodiment, obtaining the outlet water temperature in the heating pipe when the reference temperature reaches each preset calibration temperature includes:

[0018] After the reference temperature reaches each preset calibration temperature for a preset holding time, the outlet water temperature in the heating pipe is obtained.

[0019] In one embodiment, the method further includes:

[0020] Determine the water quality parameters of the cold water connected to the heating pipe;

[0021] The calibration time is determined based on the aforementioned water quality parameters;

[0022] When the water heater has been used for the specified time, the outlet water temperature correction parameter is determined.

[0023] In one embodiment, the method further includes:

[0024] Obtain the inlet temperature of the cold water connected to the heating pipe;

[0025] The inlet water temperature is calibrated based on the inlet water temperature correction parameters to obtain the calibrated corrected inlet water temperature; the inlet water temperature correction parameters are obtained based on the inlet water temperature obtained by cold water flowing through the heating pipe and the reference temperature of the cold water.

[0026] The step of controlling the operating power of the water heater's heating system based on the target temperature and the corrected outlet water temperature includes:

[0027] The operating power of the water heater's heating system is controlled based on the target temperature, the corrected outlet water temperature, and the corrected inlet water temperature.

[0028] Secondly, this application also provides a control device for a water heater. The device includes:

[0029] The temperature acquisition module is used to acquire the outlet temperature of the hot water in the heating pipes of the water heater;

[0030] A temperature correction module is used to calibrate the outlet water temperature based on outlet water temperature correction parameters to obtain a calibrated corrected outlet water temperature; the outlet water temperature correction parameters are obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water.

[0031] The heating control module is used to control the operating power of the heating system of the water heater according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipe.

[0032] Thirdly, this application also provides a water heater control device. The water heater control device includes: an outlet water temperature sensor, a reference temperature sensor, and a controller. The outlet water temperature sensor is disposed on the outlet side of the heating pipe of the water heater, and is used to detect the outlet water temperature in the heating pipe and send it to the controller. The reference temperature sensor is disposed in the circulation pipe of the water heater, and is used to detect the reference temperature in the circulation pipe and send it to the controller. The controller is used to control the water heater according to the above method.

[0033] In one embodiment, the water heater control device further includes an inlet water temperature sensor, which is disposed on the side of the water inlet of the heating pipe of the water heater, for detecting the inlet water temperature of the cold water entering the heating pipe and sending it to the controller, which is used to control the water heater according to the above method.

[0034] Fourthly, this application also provides a water heater device. The water heater device includes: a water heater and a water heater control device as described above.

[0035] In one embodiment, the water heater includes a heating pipe, a heating system, a circulation pipe, and an internal circulation valve; one end of the circulation pipe is connected to the water inlet side of the heating pipe, and the other end is connected to the water outlet side of the heating pipe through the internal circulation valve; the heating system is used to heat the water in the heating pipe; the heating system and the internal circulation valve are respectively connected to the controller of the water heater control device.

[0036] Fifthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:

[0037] Obtain the outlet temperature of the hot water in the heating pipes of the water heater;

[0038] The outlet water temperature is calibrated based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature; the outlet water temperature correction parameters are obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water.

[0039] The operating power of the water heater's heating system is controlled according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipe.

[0040] Sixthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, performs the following steps:

[0041] Obtain the outlet temperature of the hot water in the heating pipes of the water heater;

[0042] The outlet water temperature is calibrated based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature; the outlet water temperature correction parameters are obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water.

[0043] The operating power of the water heater's heating system is controlled according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipe.

[0044] The aforementioned control method, device, control equipment, equipment, computer-readable storage medium, and computer program product for a water heater acquire the outlet temperature of the hot water in the heating pipes of the water heater; calibrate the outlet temperature based on outlet temperature correction parameters to obtain a calibrated corrected outlet temperature; the outlet temperature correction parameters are obtained based on the outlet temperature obtained by the hot water flowing through the heating pipes and the reference temperature of the hot water; and control the operating power of the water heater's heating system according to the target temperature and the corrected outlet temperature to ensure that the heated corrected outlet temperature reaches the target temperature. The heating system is used to heat the water in the heating pipes. Therefore, during the use of the water heater, by calibrating the outlet temperature, the calibrated corrected outlet temperature accurately reflects the true temperature of the hot water to be discharged from the heating pipes, thereby more precisely controlling the heating power of the heating system and ensuring a higher consistency between the true temperature of the discharged hot water and the user-set target temperature, thus improving the user's water comfort. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of a water heater device in one embodiment;

[0046] Figure 2 This is a schematic diagram of the water heater device in another embodiment;

[0047] Figure 3 This is a flowchart illustrating a water heater control method in one embodiment;

[0048] Figure 4 This is a flowchart illustrating a method for determining the outlet water temperature correction parameter in one embodiment;

[0049] Figure 5 This is a schematic diagram of a process in one embodiment of controlling the heating system to heat water in the heating pipe and obtaining the reference temperature in the circulating pipe and the outlet water temperature in the heating pipe to obtain multiple temperature difference arrays.

[0050] Figure 6 This is a structural block diagram of the control device for a water heater in one embodiment;

[0051] Figure 7 This is a structural block diagram of the control device for a water heater in another embodiment;

[0052] Figure 8 This is a structural block diagram of the control device for a water heater in yet another embodiment;

[0053] Figure 9 This is an internal structural diagram of a water heater control device in one embodiment. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0055] The water heater control method provided in this application embodiment can be applied to, for example, Figure 1 The water heater device shown includes a water heater 100 and a water heater control device 200.

[0056] Specifically, such as Figure 2 As shown, the water heater 100 includes a heating pipe 110, a heating system 120, a circulation pipe 130, and an internal circulation valve K. One end of the circulation pipe 130 is connected to the water inlet side of the heating pipe 110, and the other end is connected to the water outlet side of the heating pipe 110 through the internal circulation valve K. The heating system 120 is used to heat the water in the heating pipe 110. The heating system 120 and the internal circulation valve K are respectively connected to the controller of the water heater control device 200.

[0057] The water heater control device includes an outlet water temperature sensor T1 and a controller (not shown). The outlet water temperature sensor T1 is installed on the outlet side of the heating pipe 110 of the water heater to detect the outlet water temperature within the heating pipe 110 and send the data to the controller. The water heater control device also includes a reference temperature sensor T2, which is installed within the circulation pipe 130 of the water heater to detect a reference temperature within the circulation pipe 130 and send the data to the controller. The controller is used to control the water heater according to the water heater control method.

[0058] In one embodiment, the water heater control device further includes an inlet water temperature sensor (not shown). The inlet water temperature sensor is disposed on the side of the water inlet of the heating pipe 110 of the water heater and is used to detect the inlet water temperature of the cold water connected in the heating pipe 110 and send it to the controller. The controller is used to control the water heater according to the control method of the water heater. The control method of the water heater can refer to the following method embodiments.

[0059] The heating system 120 is used to heat the water in the heating pipe 110. Specifically, the middle part of the heating pipe 110 passes through the heating system 120. Cold water entering through the inlet 111 of the heating pipe 110 is heated by the water pump and passes through the middle part of the heating pipe 110. Under the action of the heating system 120, the temperature of the cold water is raised to obtain hot water, which is then discharged through the outlet 112 of the heating pipe 110.

[0060] Among them, Figure 1In the illustrated embodiment, the heating system 120 includes a combustion system 121 and a heat exchange plate 122, and the portion of the heating pipe 110 passing through the heat exchange plate 122 is the middle section. That is, the heating pipe 110 includes a water inlet side, a middle section, and a water outlet side. The pipe located between the water inlet 111 and the middle section is the water inlet side, and the pipe located between the middle section and the water outlet 112 is the water outlet side. A water pump is installed on the water inlet side of the heating pipe 110.

[0061] The heating system 120 also includes an air inlet pipe 123. During operation, combustible gas passes sequentially along the air inlet pipe 123 through a safety valve (not shown), a proportional valve (not shown), and a segmented valve (not shown), before being discharged and burned through the burner holes. The high-temperature flue gas generated during combustion heats the water in the middle section of the heating pipe 110 at the heat exchange plate 122. The heating system 120 also includes a fan 124, which accelerates gas flow, introduces air, and exhausts waste gas. It is understood that the water heater may also include other devices; those skilled in the art can refer to commonly used techniques in the field for configuration.

[0062] The internal circulation valve K can be a three-way valve. Under the control of the three-way valve, the water in the heating pipe 110 can be discharged through the outlet 112 or it can flow into the circulation pipe 130 through the three-way valve, thus circulating in the heating pipe 110 and the circulation pipe 130.

[0063] In one embodiment, such as Figure 3 As shown, a control method for a water heater is provided, which is applied to... Figure 1 The following steps are used as an example to illustrate the process of controlling a water heater, including steps 310-330.

[0064] Step 310: Obtain the outlet temperature of the hot water in the heating pipe of the water heater.

[0065] When the water heater is in normal use, cold water enters the outlet side of the heating pipe through the inlet, passes through the middle section of the heating pipe, is heated by the heating system, flows through the outlet side of the heating pipe, and is discharged from the outlet for user use. In this embodiment, the water inside the outlet side of the heating pipe is the hot water in the heating pipe. The outlet water temperature is the temperature value obtained by the outlet water temperature sensor detecting the temperature of the hot water in the heating pipe.

[0066] Step 320: The outlet water temperature is calibrated based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature.

[0067] Because the outlet water temperature sensor is used in water for a long time, the water contains minerals (such as calcium and magnesium ions). When the water containing minerals flows through the temperature sensor, the minerals are easily adsorbed by the temperature sensor. Over time, scale will form on the temperature sensor. The temperature sensor readings after scaling will be deviated. Therefore, the outlet water temperature may have a certain deviation and cannot accurately reflect the true water temperature on the side of the heating pipe outlet.

[0068] In this embodiment, the outlet water temperature correction parameter is obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water. Therefore, by calibrating the outlet water temperature using this outlet water temperature correction parameter, the obtained corrected outlet water temperature can accurately reflect the true temperature of the hot water to be discharged in the current heating pipe.

[0069] Step 330: Control the operating power of the water heater's heating system according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature.

[0070] The heating system is used to heat the water in the heating pipes. The target temperature is the temperature that the water discharged from the outlet needs to reach; this temperature can be pre-stored in the controller or set by the user. It can be understood that the water heater control device may also include an interactive module connected to the controller, allowing the user to set the target temperature during water heater use.

[0071] Specifically, the controller determines the target power of the combustion system in the heating system based on the target temperature and the corrected outlet water temperature, and controls the operation of the combustion system based on the target power. When determining the target power of the combustion system, the temperature difference between the corrected outlet water temperature and the target temperature in the heating pipe can be determined first, and then the target power of the combustion system can be determined based on the temperature difference. Alternatively, the flow rate of hot water in the heating pipe per unit time can be detected, the heating rate of the hot water can be calculated based on the corrected outlet water temperature, and the target power value can be calculated based on the flow rate per unit time and the heating rate. When controlling the combustion system based on the target power, the target power can be combined with the maximum power value of the water heater for control. In implementation, those skilled in the art can refer to commonly used techniques in the field for setting up the system; this embodiment does not limit this.

[0072] The aforementioned water heater control method involves obtaining the target temperature of the water heater and the outlet water temperature in the heating pipes; calibrating the outlet water temperature based on outlet water temperature correction parameters to obtain a calibrated corrected outlet water temperature; and controlling the operating power of the water heater's heating system according to the target temperature and the corrected outlet water temperature to ensure that the corrected outlet water temperature reaches the target temperature. The heating system is used to heat the water in the heating pipes. The outlet water temperature correction parameters are based on the outlet water temperature obtained by the hot water flowing through the heating pipes and the reference temperature of the hot water. Therefore, during the use of the water heater, by calibrating the outlet water temperature, the calibrated corrected outlet water temperature accurately reflects the true temperature of the hot water to be discharged from the heating pipes, thereby more precisely controlling the heating power of the heating system. This results in a higher consistency between the true temperature of the discharged hot water and the user-set target temperature, thus improving the user's water comfort. Furthermore, by controlling the operating power of the water heater's heating system according to the target temperature and the corrected outlet water temperature, the water heater's operating power can be optimized, improving heating efficiency while reducing gas emissions.

[0073] In one embodiment, such as Figure 4 As shown, the method for determining the outlet water temperature correction parameter includes steps 410-430.

[0074] Step 410: Control the water heater to enter self-circulation mode.

[0075] In self-circulation mode, the water in the water heater circulates within the heating pipes and the circulation pipes. Specifically, the controller can connect the circulation pipes and the heating pipes by controlling a three-way valve, so that water from the heating pipes flows into the circulation pipes after passing through the three-way valve.

[0076] Furthermore, in self-circulation mode, the controller can also close the water inlet to prevent the water volume from increasing further, making it easier to control the heating system.

[0077] Step 420: During the process of controlling the heating system to heat the water in the heating pipe, the reference temperature in the circulating pipe and the outlet water temperature in the heating pipe are obtained to obtain multiple temperature difference arrays.

[0078] The temperature difference array includes the reference temperature and the outlet water temperature at the same time.

[0079] It should be noted that the connection between the circulation pipe and the heating pipe is located upstream of the water pump. This ensures that water entering from the inlet of the heating pipe flows quickly through the pump and does not flow into the circulation pipe. When the water heater is not in self-circulation mode, the circulation pipe and the heating pipe are not connected under the control of the three-way valve, and hot water in the heating pipe will not enter the circulation pipe, thus ensuring that the circulation pipe is in a water-free state. Therefore, the reference temperature sensor installed in the circulation pipe will not be affected by minerals in the water and will not form scale. The value (reference temperature) obtained by the reference temperature sensor is a reference temperature value that reflects the temperature of the hot water currently flowing through the circulation pipe.

[0080] In this embodiment, during the heating process controlled by the heating system, the outlet water temperature in the heating pipe and the reference temperature in the circulation pipe are continuously increasing. In actual implementation, the outlet water temperature and the reference temperature are corresponding. For example, a set of outlet water temperature and reference temperature can be obtained at the same time after a period of time, or the real-time outlet water temperature and reference temperature can be continuously obtained.

[0081] Step 430: Determine the outlet water temperature correction parameters based on the temperature difference array.

[0082] It is understandable that during the continuous operation of the heating system, the temperature of the hot water hardly changes when it flows from the outlet temperature sensor to the reference temperature sensor, and the flow rate is very high. Therefore, the detection values ​​of the two temperature sensors at the same time can be used to reflect the temperature of the same section of hot water.

[0083] In this embodiment, by controlling the water heater to enter the self-circulation mode, the reference temperature sensor detects the reference temperature of the hot water in the water heater, and combined with the outlet temperature detected by the outlet temperature sensor, an outlet temperature correction parameter based on the current usage status of the outlet temperature sensor can be obtained. In the subsequent use of the water heater, the outlet temperature correction parameter obtained by the outlet temperature sensor is corrected, thereby improving the accuracy of the water heater outlet temperature detection.

[0084] Furthermore, the reference temperature sensor can be placed close to the three-way valve. This is because during the use of the water heater, there is a possibility that cold water may overflow into the circulation pipe. By placing the reference temperature sensor away from the water inlet of the heating pipe, it can be prevented from coming into contact with water containing minerals unnecessarily, thus protecting the reference temperature sensor from mineral contamination and ensuring the accuracy of its measurement values.

[0085] Furthermore, the outlet water temperature sensor and the reference temperature sensor can be selected to be the same type of sensor, so as to obtain more reliable correction parameters during the determination of correction parameters.

[0086] In one embodiment, such as Figure 5 As shown, step 420 may specifically include steps 421-423.

[0087] Step 421: Control the heating system to heat the water in the heating pipe and obtain the reference temperature in the circulating pipe.

[0088] During the heating process of the heating system heating the water in the heating pipe, the water temperature in the heating pipe and the circulation pipe will continue to rise. In this embodiment, the reference temperature in the circulation pipe is obtained by the reference temperature sensor in the circulation pipe, and the true value of the water temperature at this time can be obtained.

[0089] Step 422: When the reference temperature reaches each preset calibration temperature, obtain the outlet water temperature in the heating pipe.

[0090] There are multiple preset calibration temperatures, with the difference between any two adjacent preset calibration temperatures being equal. The preset reference temperature can be pre-set in the controller or determined by the controller based on the user's usage habits. For example, if a user's home water heater has a temperature setting range of 30℃–60℃, the controller can start from 30℃ and set the difference between any two adjacent preset calibration temperatures to 5℃, resulting in seven preset reference temperature values: 30℃, 35℃, 40℃, 45℃, 50℃, 55℃, and 60℃.

[0091] When the reference temperature reaches 30℃, the outlet water temperature in the heating pipe is obtained, which is the temperature value detected by the outlet water temperature sensor in the heating pipe, thus obtaining a temperature array at 30℃. Since the heating system continuously heats the water in the heating pipe, temperature arrays at 35℃, 40℃, 45℃, 50℃, 55℃, and 60℃ can be obtained sequentially.

[0092] Step 423: Obtain the temperature difference array based on the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe.

[0093] The temperature difference array can reflect the temperature values ​​detected by two temperature sensors at the same time. The outlet water temperature correction parameter determined based on this temperature array can more accurately correct the outlet water temperature detected by the outlet water temperature sensor.

[0094] It is understandable that in the process of creating the temperature difference array, the smaller the temperature step value (the difference between two adjacent preset calibration temperatures), the more reliable the result in the temperature difference array, and the closer the final determined outlet water temperature correction parameter is to the ideal effect. Therefore, in actual implementation, the temperature step value can be minimized as much as possible, taking into account the actual situation.

[0095] In one embodiment, step 422 may specifically include: after the reference temperature reaches each preset calibration temperature for a preset holding time, obtaining the outlet water temperature in the heating pipe.

[0096] The preset holding time can be preset in the controller, or it can be determined by the controller in combination with the number of preset reference temperatures and the preset total calibration time. For example, if the total calibration time is 5 minutes and there are 7 preset reference temperatures, then considering the heating time, the preset holding time can be set to 30 seconds.

[0097] Specifically, taking the aforementioned seven preset reference temperatures as an example, during the process of the heating system heating the water in the heating pipes to raise the water temperature, the controller continuously acquires the reference temperature in the circulation pipes. When the acquired reference temperature reaches the preset reference temperature of 30℃, the controller can control the heating system to enter the constant temperature heating mode. After the heating system enters the constant temperature heating mode, it controls the water temperature in the heating pipes to remain constant; that is, the constant temperature heating mode is a mode that maintains a constant hot water temperature, and the specific implementation method does not need to be limited. After the heating system enters the constant temperature heating mode for 30 seconds, the controller acquires and records the outlet water temperature T130 and the reference temperature T230 at this moment, obtaining the temperature difference array (T130, T230).

[0098] The controller continues to control the heating system to heat the water in the heating pipe, raising the water temperature. At the same time, it acquires the reference temperature in the circulation pipe. When the acquired reference temperature reaches the preset reference temperature of 35℃, it controls the heating system to enter the constant temperature heating mode again for 30 seconds. Then, it records the outlet water temperature T135 and the reference temperature T235 at this moment, obtaining the temperature difference array (T135, T235). In this way, (T140, T240), (T145, T245), (T150, T255), and (T160, T260) are obtained in sequence.

[0099] It is understandable that the smaller the temperature step value and the longer the preset hold time, the more reliable the result in the temperature difference array. Therefore, in actual implementation, while minimizing the temperature step value, we can also consider maximizing the preset hold time.

[0100] In this embodiment, in the self-circulation mode of the water heater, by keeping the water temperature constant for a preset time, it can be ensured that the two values ​​in the temperature difference array are data obtained from detecting the same water temperature, thereby improving the accuracy of the obtained outlet water temperature parameters.

[0101] Specifically, in step 430, the method of determining the outlet temperature correction parameter based on the temperature difference array is not unique. In one embodiment, the outlet temperature calibration regression line equation is determined according to each temperature difference array, and the outlet temperature calibration regression line equation is used as the outlet temperature correction parameter.

[0102] Specifically, the regression line equation model is T2x = a × T1x + b, where T1x and T2x represent the outlet water temperature and the reference temperature, respectively. By substituting the various temperature difference arrays, the values ​​of a and b can be calculated, thus obtaining the outlet water temperature calibration regression line equation. After the water heater is calibrated, the outlet water temperature needs to be calibrated again based on this outlet water temperature calibration regression line equation during subsequent use to obtain the corrected outlet water temperature.

[0103] It is understandable that when the water heater is used for the first time, the controller will have initial values ​​of a and b set. The values ​​of a and b will be used to update the initial values ​​after the controller determines the outlet water temperature correction parameters based on the temperature difference array.

[0104] In this embodiment, the least squares method was used to obtain the regression line equation for the outlet water temperature calibration, thereby solving the problem of temperature deviation caused by scaling in the outlet water temperature sensor.

[0105] In another embodiment, after obtaining multiple temperature difference arrays, the temperature difference between two values ​​in each array can be determined, and each temperature difference is used as a correction parameter for the outlet water temperature corresponding to different outlet water temperatures. During the use of the water heater, the outlet water temperature is calibrated based on the obtained temperature difference value corresponding to the outlet water temperature. For example, if the actual value of the temperature difference array (T130, T230) when the reference temperature reaches 30℃ is (32, 30), that is, the outlet water temperature is 32℃ and the reference temperature is 30℃, the temperature difference between the two can be calculated to be 2℃. That is, the outlet water temperature correction parameter when the outlet water temperature is 32℃ is 2℃. Therefore, during the use of the water heater, when the obtained outlet water temperature is 32℃, it needs to be calibrated to 30℃.

[0106] In one embodiment, the control method for the water heater may further include: determining an outlet water temperature correction parameter in response to a received outlet water temperature calibration command.

[0107] For example, the outlet water temperature calibration command can be issued by the user through the interaction module. For instance, after using the water heater for a long time, if the user notices a deviation between the temperature of the hot water discharged from the water heater and its set target stability, the user can issue an outlet water temperature calibration command to the controller through the water heater's interaction module. Upon receiving the outlet water temperature calibration command, the controller determines the outlet water temperature correction parameters according to the method for determining outlet water temperature correction parameters described in the above embodiments.

[0108] It is understandable that as the water heater is used for a longer period of time, the scale buildup on the outlet water temperature sensor will also change. Therefore, by adjusting the outlet water temperature correction parameters in a timely manner according to the user's calibration instructions, the comfort level of the water heater can better meet the user's expectations and improve the user experience.

[0109] In another embodiment, the control method for the water heater may further include: determining the water quality parameters of the cold water connected to the heating pipe; determining a calibration time based on the water quality parameters; and determining a correction parameter for the outlet water temperature when the water heater has been in use for the calibration time.

[0110] Specifically, due to the influence of factors such as location, water source, and surrounding environment, the quality of cold water connected to the water heater by different users will vary. Therefore, in actual use, the calibration time of the outlet water temperature correction parameter in the water heater can be set in a targeted manner according to the current water quality and the usage of the water heater.

[0111] Water quality parameters can be directly input by the user or the water heater installer, or the user or the water heater installer can input parameters such as address, water source, and surrounding environment (e.g., whether there is a chemical plant). The controller determines the water quality parameters based on these parameters.

[0112] In this embodiment, the calibration time is determined by water quality parameters and the usage time of the water heater. The water temperature correction parameters are then determined at the calibration time, which makes the usage status of the water heater more consistent with the actual usage situation of the user and improves the user experience.

[0113] In one embodiment, the control method for the water heater may further include: acquiring the inlet temperature of the cold water connected to the heating pipe; calibrating the inlet temperature based on the inlet temperature correction parameter to obtain the calibrated corrected inlet temperature. Further, controlling the operating power of the water heater's heating system according to the target temperature and the corrected outlet temperature includes: controlling the operating power of the water heater's heating system according to the target temperature, the corrected outlet temperature, and the corrected inlet temperature.

[0114] In this embodiment, the inlet water temperature is detected by an inlet water temperature sensor, which can be installed between the inlet and the water pump. Since scale can accumulate on the inlet water temperature sensor over long-term use, the inlet water temperature is calibrated based on inlet water temperature correction parameters during water heater operation. The resulting corrected inlet water temperature more accurately reflects the true temperature of the incoming cold water.

[0115] The inlet water temperature correction parameter is obtained based on the inlet water temperature obtained by the cold water flowing through the heating pipe and the reference temperature of the cold water. The reference temperature of the cold water is the temperature detected by the reference temperature sensor when the water heater enters the self-circulation mode.

[0116] In one embodiment, the method for determining the inlet water temperature correction parameter may specifically include: controlling the water heater to enter a self-circulation mode, and obtaining the reference temperature of the cold water in the circulation pipe and the inlet water temperature in the heating pipe to obtain a cold water temperature difference array, the cold water temperature difference array including the reference temperature of the cold water and the inlet water temperature at the same time; determining the inlet water temperature correction parameter based on the cold water temperature difference array. When determining the inlet water temperature correction parameter based on the cold water temperature difference array, the inlet water temperature correction parameter can be determined based on the difference between two data in the cold water temperature difference array, as described above regarding the method for determining the outlet water temperature correction parameter.

[0117] In this embodiment, when using the water heater, the outlet water temperature is calibrated to ensure that the corrected outlet water temperature accurately reflects the true temperature of the hot water to be discharged from the heating pipe. Similarly, the inlet water temperature is calibrated to ensure that the corrected inlet water temperature accurately reflects the true temperature of the cold water entering the heating pipe. Therefore, based on the true temperatures of the hot and cold water, the heating power of the heating system can be more precisely controlled, optimizing the water heater's operating power, improving heating efficiency, and reducing gas emissions.

[0118] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0119] Based on the same inventive concept, this application also provides a control device for a water heater to implement the control method for the water heater described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of the one or more water heater control device embodiments provided below can be found in the limitations of the water heater control method described above, and will not be repeated here.

[0120] In one embodiment, such as Figure 6 As shown, a control device for a water heater is provided, including: a temperature acquisition module 410, a temperature correction module 420, and a heating control module 430, wherein:

[0121] Temperature acquisition module 410 is used to acquire the outlet temperature of hot water in the heating pipe of the water heater;

[0122] The temperature correction module 420 is used to calibrate the outlet water temperature based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature; the outlet water temperature correction parameters are obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water.

[0123] The heating control module 430 is used to control the operating power of the water heater's heating system according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipes.

[0124] In one embodiment, such as Figure 7 As shown, the device also includes a parameter determination module 440, which is used to control the water heater to enter a self-circulation mode. In the self-circulation mode, the water in the water heater circulates in the heating pipe and the circulation pipe. The heating system is controlled to heat the water in the heating pipe and obtain the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe to obtain multiple temperature difference arrays. The temperature difference arrays include the reference temperature and the outlet water temperature at the same time. The outlet water temperature correction parameters are determined based on the temperature difference arrays.

[0125] In one embodiment, the parameter determination module 440 is further configured to control the heating system to heat the water in the heating pipe and obtain the reference temperature in the circulation pipe; when the reference temperature reaches each preset calibration temperature, obtain the outlet water temperature in the heating pipe; the difference between two adjacent preset calibration temperatures is equal; and obtain a temperature difference array based on the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe.

[0126] In one embodiment, the parameter determination module 440 is further configured to obtain the outlet water temperature in the heating pipe after the reference temperature has reached each preset calibration temperature for a preset holding time.

[0127] In one embodiment, the parameter determination module 440 is further configured to determine the water quality parameters of the cold water connected to the heating pipe; determine the calibration time based on the water quality parameters; and determine the outlet water temperature correction parameters when the water heater has been used for the calibration time.

[0128] In one embodiment, such as Figure 8 As shown, the device also includes an inlet water temperature correction module 450, which is used to obtain the inlet water temperature of the cold water connected to the heating pipe; calibrate the inlet water temperature based on the inlet water temperature correction parameters to obtain the calibrated corrected inlet water temperature; the inlet water temperature correction parameters are obtained based on the inlet water temperature obtained by the cold water flowing through the heating pipe and the reference temperature of the cold water.

[0129] The heating control module 430 is also used to control the operating power of the water heater's heating system based on the target temperature, the corrected outlet water temperature, and the corrected inlet water temperature.

[0130] The various modules in the control device of the aforementioned water heater can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0131] In one embodiment, a water heater control device is provided, the internal structure of which can be shown in the figure below. Figure 9 As shown, the water heater control device includes a processor, memory, and communication interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The communication interface is used for wired or wireless communication with external control devices. Wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. The communication interface can communicate with certain modules within the water heater (such as the heating system) and can also receive start-up commands from external control devices. When the computer program is executed by the processor, it implements a water heater control method.

[0132] In one embodiment, the water heater control device further includes a display screen and an interactive module. The display screen can be an LCD screen or an e-ink screen, and the interactive module can be a touch layer covering the display screen, or buttons, a trackball, or a touchpad mounted on the casing of the water heater control device. Users can use the display screen and interactive module of the water heater control device to select or set the water heater to start, thereby generating a start-up command.

[0133] Those skilled in the art will understand that Figure 9 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the water heater control device to which the present application is applied. The specific water heater control device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0134] In one embodiment, a water heater control device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the water heater control method described above.

[0135] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0136] Obtain the outlet temperature of the hot water in the heating pipes of the water heater;

[0137] The outlet water temperature is calibrated based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature; the outlet water temperature correction parameters are obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water.

[0138] The operating power of the water heater's heating system is controlled according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipes.

[0139] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: controlling the water heater to enter a self-circulation mode; in the self-circulation mode, the water in the water heater circulates in the heating pipe and the circulation pipe; controlling the heating system to heat the water in the heating pipe and obtaining the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe to obtain multiple temperature difference arrays; the temperature difference arrays include the reference temperature and the outlet water temperature at the same time; and determining the outlet water temperature correction parameter based on the temperature difference arrays.

[0140] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: controlling the heating system to heat the water in the heating pipe and obtaining the reference temperature in the circulation pipe; obtaining the outlet water temperature in the heating pipe when the reference temperature reaches each preset calibration temperature; ensuring that the difference between two adjacent preset calibration temperatures is equal; and obtaining a temperature difference array based on the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe.

[0141] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: after the reference temperature reaches each preset calibration temperature for a preset holding time, the outlet water temperature in the heating pipe is obtained.

[0142] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the water quality parameters of the cold water connected to the heating pipe; determining the calibration time based on the water quality parameters; and determining the outlet water temperature correction parameters when the water heater has been used for the calibration time.

[0143] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the inlet water temperature of the cold water connected to the heating pipe; calibrating the inlet water temperature based on the inlet water temperature correction parameter to obtain the calibrated corrected inlet water temperature; the inlet water temperature correction parameter is obtained based on the inlet water temperature obtained by the cold water flowing through the heating pipe and the reference temperature of the cold water; and controlling the operating power of the heating system of the water heater according to the target temperature, the corrected outlet water temperature and the corrected inlet water temperature.

[0144] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0145] Obtain the outlet temperature of the hot water in the heating pipes of the water heater;

[0146] The outlet water temperature is calibrated based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature; the outlet water temperature correction parameters are obtained based on the outlet water temperature obtained by hot water flowing through the heating pipe and the reference temperature of the hot water.

[0147] The operating power of the water heater's heating system is controlled according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipes.

[0148] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: controlling the water heater to enter a self-circulation mode; in the self-circulation mode, the water in the water heater circulates in the heating pipe and the circulation pipe; controlling the heating system to heat the water in the heating pipe and obtaining the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe to obtain multiple temperature difference arrays; the temperature difference arrays include the reference temperature and the outlet water temperature at the same time; and determining the outlet water temperature correction parameter based on the temperature difference arrays.

[0149] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: controlling the heating system to heat the water in the heating pipe and obtaining the reference temperature in the circulation pipe; obtaining the outlet water temperature in the heating pipe when the reference temperature reaches each preset calibration temperature; ensuring that the difference between two adjacent preset calibration temperatures is equal; and obtaining a temperature difference array based on the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe.

[0150] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: after the reference temperature reaches each preset calibration temperature for a preset holding time, the outlet water temperature in the heating pipe is obtained.

[0151] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the water quality parameters of the cold water connected to the heating pipe; determining the calibration time based on the water quality parameters; and determining the outlet water temperature correction parameters when the water heater has been used for the calibration time.

[0152] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: obtaining the inlet water temperature of the cold water connected to the heating pipe; calibrating the inlet water temperature based on the inlet water temperature correction parameter to obtain the calibrated corrected inlet water temperature; the inlet water temperature correction parameter is obtained based on the inlet water temperature obtained by the cold water flowing through the heating pipe and the reference temperature of the cold water; and controlling the operating power of the heating system of the water heater according to the target temperature, the corrected outlet water temperature and the corrected inlet water temperature.

[0153] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0154] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0155] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for controlling a water heater, characterized in that, include: Obtain the outlet temperature of the hot water in the heating pipes of the water heater; The outlet water temperature is calibrated based on the outlet water temperature correction parameters to obtain the calibrated corrected outlet water temperature. The operating power of the water heater's heating system is controlled according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipe. The method for determining the outlet water temperature correction parameter includes: The water heater is controlled to enter a self-circulation mode; in the self-circulation mode, the water in the water heater circulates within the heating pipe and the circulation pipe. The heating system is controlled to heat the water in the heating pipe, and the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe are obtained to obtain multiple temperature difference arrays; the temperature difference arrays include the reference temperature and the outlet water temperature at the same time. The outlet water temperature correction parameter is determined based on the temperature difference array.

2. The method according to claim 1, characterized in that, The system controls the heating system to heat the water in the heating pipe and obtains the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe to obtain multiple temperature difference arrays, including: The heating system is controlled to heat the water in the heating pipe and a reference temperature is obtained in the circulation pipe. When the reference temperature reaches each preset calibration temperature, the outlet water temperature in the heating pipe is obtained; the difference between two adjacent preset calibration temperatures is equal; A temperature difference array is obtained based on the reference temperature in the circulation pipe and the outlet water temperature in the heating pipe.

3. The method according to claim 2, characterized in that, The step of obtaining the outlet water temperature in the heating pipe when the reference temperature reaches each preset calibration temperature includes: After the reference temperature reaches each preset calibration temperature for a preset holding time, the outlet water temperature in the heating pipe is obtained.

4. The method according to claim 2 or 3, characterized in that, The method further includes: Determine the water quality parameters of the cold water connected to the heating pipe; The calibration time is determined based on the aforementioned water quality parameters; When the water heater has been used for the specified time, the outlet water temperature correction parameter is determined.

5. The method according to claim 1, characterized in that, The method further includes: Obtain the inlet temperature of the cold water connected to the heating pipe; The inlet water temperature is calibrated based on the inlet water temperature correction parameters to obtain the calibrated corrected inlet water temperature; the inlet water temperature correction parameters are obtained based on the inlet water temperature obtained by cold water flowing through the heating pipe and the reference temperature of the cold water. The step of controlling the operating power of the water heater's heating system based on the target temperature and the corrected outlet water temperature includes: The operating power of the water heater's heating system is controlled based on the target temperature, the corrected outlet water temperature, and the corrected inlet water temperature.

6. A control device for a water heater, characterized in that, The device includes: The temperature acquisition module is used to acquire the outlet temperature of the hot water in the heating pipes of the water heater; A temperature correction module is used to calibrate the outlet water temperature based on outlet water temperature correction parameters to obtain a calibrated corrected outlet water temperature. The method for determining the outlet water temperature correction parameters includes: controlling the water heater to enter a self-circulation mode; in the self-circulation mode, water in the water heater circulates within the heating pipe and the circulation pipe; controlling the heating system to heat the water in the heating pipe and obtaining a reference temperature in the circulation pipe and the outlet water temperature in the heating pipe to obtain multiple temperature difference arrays; the temperature difference arrays include the reference temperature and the outlet water temperature at the same time; and determining the outlet water temperature correction parameters based on the temperature difference arrays. The heating control module is used to control the operating power of the heating system of the water heater according to the target temperature and the corrected outlet water temperature, so that the corrected outlet water temperature after heating reaches the target temperature. The heating system is used to heat the water in the heating pipe.

7. A water heater control device, characterized in that, The system includes an outlet water temperature sensor, a reference temperature sensor, an inlet water temperature sensor, and a controller. The outlet water temperature sensor is located on the outlet side of the heating pipe of the water heater and is used to detect the outlet water temperature in the heating pipe and send it to the controller. The reference temperature sensor is located in the circulation pipe of the water heater and is used to detect the reference temperature in the circulation pipe and send it to the controller. The inlet water temperature sensor is located on the inlet side of the heating pipe of the water heater and is used to detect the inlet water temperature of the cold water entering the heating pipe and send it to the controller. The controller is used to control the water heater according to any one of claims 1 to 6.

8. A water heater device, characterized in that, Includes a water heater and the water heater control device as described in claim 7.

9. The water heater device according to claim 8, characterized in that, The water heater includes a heating pipe, a heating system, a circulation pipe, and an internal circulation valve; one end of the circulation pipe is connected to the water inlet side of the heating pipe, and the other end is connected to the water outlet side of the heating pipe through the internal circulation valve; the heating system is used to heat the water in the heating pipe; the heating system and the internal circulation valve are respectively connected to the controller of the water heater control device.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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