Instantaneous heating device, its outlet water temperature prediction method, prediction device, and water treatment equipment

Abstract

The present invention provides an instant heating device, a method for predicting the outlet water temperature thereof, a prediction device, and a water treatment device. Among them, the method for predicting the outlet water temperature includes: obtaining the predicted outlet water temperature at the first moment predicted at the first moment and using it as the initial value of temperature prediction; determining a prediction deviation coefficient according to the initial value of temperature prediction and the second actual outlet water temperature detected at the second moment; determining the difference between the second actual outlet water temperature and the first actual outlet water temperature at the first moment; using the sum of the difference and the second actual outlet water temperature as the preliminary temperature prediction value; calculating the predicted outlet water temperature at the second moment according to the prediction deviation coefficient and the preliminary temperature prediction value, and using it as the new initial value of temperature prediction. Through the method for predicting the outlet water temperature provided by the present invention, a relatively accurate temperature prediction value can be calculated, and this prediction value is close to the actual outlet water temperature value. Using this prediction value for outlet water temperature control can effectively improve the temperature control effect and avoid various problems caused by delay.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of August 24, 2021, an application number of "202110976371.3", and an invention title of "Instant Heating Device and Its Outlet Water Temperature Prediction Method, Prediction Device, Water Treatment Equipment". Technical Field

[0002] The present invention relates to the field of instant heating technology, and specifically, to an instant heating device and its outlet water temperature prediction method, prediction device, and water treatment equipment. Background Art

[0003] Instant heating products have the advantage of heating on demand. However, when the software needs to change the working voltage of the water pump to adjust the outlet water temperature, due to the superposition of multiple factors such as the response speed of the water pump, the time required for the water temperature to change, and the response lag of the outlet water temperature sensor, there is a certain error caused by delay between the actual outlet water temperature and the outlet water temperature detected by the software. It is difficult for the temperature control system to accurately grasp the actual situation of the outlet water temperature, resulting in large overshoot, large temperature fluctuations, and even water temperature runaway leading to boiling and vaporization. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of the present invention provides an outlet water temperature prediction method for an instant heating device.

[0006] A second aspect of the present invention provides an outlet water temperature prediction device for an instant heating device.

[0007] A third aspect of the present invention provides an instant heating device.

[0008] A fourth aspect of the present invention provides a water treatment equipment.

[0009] A fifth aspect of the present invention provides a readable storage medium.

[0010] In view of this, according to the first aspect of the present invention, an outlet water temperature prediction method for an instant heating device is provided. The instant heating device includes a temperature detection device for detecting the outlet water temperature of the instant heating device. The outlet water temperature prediction method includes: obtaining the predicted outlet water temperature at the first moment predicted at the first moment as the initial temperature prediction value; determining a prediction deviation coefficient according to the initial temperature prediction value and the second actual outlet water temperature detected at the second moment; determining the difference between the second actual outlet water temperature and the first actual outlet water temperature at the first moment; taking the sum of the difference and the second actual outlet water temperature as the preliminary temperature prediction value; calculating the predicted outlet water temperature at the second moment according to the prediction deviation coefficient and the preliminary temperature prediction value, and using it as the new initial temperature prediction value, where the first moment is earlier than the second moment.

[0011] The method for predicting the outlet water temperature of the instant heating device provided by the present invention is used for an instant heating device. The instant heating device includes a temperature detection device, and the outlet water temperature of the instant heating device is detected by the temperature detection device. During the water outlet process, when it is necessary to adjust the outlet water temperature, the predicted outlet water temperature at the first moment, that is, the initial temperature prediction value, is obtained. The initial temperature prediction value is the temperature obtained by predicting the true outlet water temperature at the first moment. Due to the delay, the second actual outlet water temperature detected by the system at the second moment is the true outlet water temperature at the first moment. Therefore, according to the initial temperature prediction value and the second actual outlet water temperature, the prediction deviation coefficient can be determined. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate.

[0012] It should be noted here that the second moment is the current moment, and the first moment is earlier than the second moment, and the time difference between the second moment and the first moment is N seconds.

[0013] By calculating the difference between the second actual outlet water temperature and the first actual outlet water temperature, the temperature change value of the outlet water temperature within the previous N seconds is obtained. By calculating the sum of the temperature change value and the second actual outlet water temperature, the preliminary temperature prediction value is obtained. According to the preliminary temperature prediction value and the prediction deviation coefficient, the more accurate predicted outlet water temperature at the second moment, that is, the new initial temperature prediction value, can be calculated. The new initial temperature prediction value is close to the true outlet water temperature value. Using this temperature prediction value for outlet water temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors caused by delay.

[0014] It should also be noted that the new initial temperature prediction value is continuously recorded and continuously used in the next N seconds. This is an iterative process, so that the outlet water temperature can be predicted in real time. The prediction deviation coefficient changes in real time and reflects whether the initial temperature prediction value N seconds ago is accurate. The closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0015] Through the method for predicting the outlet water temperature provided by the present invention, a more accurate temperature prediction value can be calculated. This prediction value is close to the true outlet water temperature value. Using this prediction value for outlet water temperature control can effectively improve the temperature control effect and avoid problems such as large overshoot, large temperature fluctuations, and even water temperature out of control leading to boiling and vaporization caused by temperature errors caused by delay.

[0016] According to the method for predicting the outlet water temperature of the instant heating device of the present invention, the following technical features may also be included:

[0017] In the above technical solution, the step of determining the prediction deviation coefficient according to the initial temperature prediction value and the second actual outlet water temperature detected at the second moment specifically includes: comparing the second actual outlet water temperature with the initial temperature prediction value, and determining the prediction deviation coefficient according to the comparison result.

[0018] In this technical solution, the initial value of temperature prediction is the temperature obtained by predicting the true outlet water temperature at the first moment. Due to the delay, the second actual outlet water temperature detected by the system at the second moment is the true outlet water temperature at the first moment. By comparing the second actual outlet water temperature with the initial value of temperature prediction, the deviation degree between the two can be determined, and thus the prediction deviation coefficient can be determined according to the comparison result. The prediction deviation coefficient reflects whether the initial value of temperature prediction at the first moment is accurate, that is, whether the initial value of temperature prediction N seconds ago is accurate. Through the technical solution of the present invention, the prediction deviation coefficient can be determined. According to the prediction deviation coefficient, it can be judged whether the prediction N seconds ago is accurate. At the same time, the prediction deviation coefficient changes in real time. Based on the prediction deviation coefficient and the preliminary temperature prediction value, a more accurate predicted value of the outlet water temperature can be calculated, and this predicted value is close to the true outlet water temperature value.

[0019] In any of the above technical solutions, the step of comparing the second actual outlet water temperature with the initial value of temperature prediction and determining the prediction deviation coefficient according to the comparison result specifically includes: determining the prediction deviation coefficient according to the quotient of the second actual outlet water temperature and the initial value of temperature prediction.

[0020] In this technical solution, the prediction deviation coefficient can be determined according to the quotient of the second actual outlet water temperature and the initial value of temperature prediction. Among them, the closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0021] Specifically, the quotient of the second actual outlet water temperature and the initial value of temperature prediction can be directly used as the prediction deviation coefficient.

[0022] Furthermore, the prediction deviation coefficient can be determined according to the difference between the second actual outlet water temperature and the initial value of temperature prediction.

[0023] In any of the above technical solutions, the step of calculating the predicted outlet water temperature at the second moment according to the prediction deviation coefficient and the preliminary temperature prediction value specifically includes: determining the predicted outlet water temperature at the second moment according to the product of the prediction deviation coefficient and the preliminary temperature prediction value.

[0024] In this technical solution, the predicted outlet water temperature at the second moment, that is, the outlet water temperature value at the current moment, can be determined according to the product of the prediction deviation coefficient and the preliminary temperature prediction value.

[0025] Specifically, the product of the prediction deviation coefficient and the preliminary temperature prediction value can be directly used as the predicted outlet water temperature at the second moment.

[0026] In any of the above technical solutions, it further includes: storing the second actual outlet water temperature.

[0027] In any of the above technical solutions, it further includes: storing the predicted outlet water temperature at the second moment.

[0028] In this technical solution, the second actual water outlet temperature, that is, the water outlet temperature detected at the current moment, is continuously recorded and can be continuously used in the next N seconds to calculate the temperature change value within the next N seconds. The predicted water outlet temperature at the second moment, that is, the new initial temperature prediction value, is continuously recorded and continuously used in the next N seconds to calculate the new prediction deviation coefficient. Therefore, the prediction deviation coefficient is constantly changing. This is an iterative process, so that the water outlet temperature can be predicted more accurately in real time.

[0029] In any of the above technical solutions, the step of obtaining the predicted water outlet temperature at the first moment predicted at the first moment and using it as the initial temperature prediction value specifically includes: responding to the adjustment instruction of the water outlet temperature of the instant heating device, and obtaining the predicted water outlet temperature at the first moment predicted at the first moment and using it as the initial temperature prediction value.

[0030] In this technical solution, in response to the adjustment instruction of the water outlet temperature, the predicted water outlet temperature at the first moment predicted at the first moment is obtained and used as the initial temperature prediction value for predicting the water outlet temperature at the current moment, so as to obtain a new initial temperature prediction value. The temperature control system can accurately grasp the actual situation of the water outlet temperature, and use the new initial temperature prediction value to control the water outlet temperature, which can eliminate the influence caused by feedback lag during the temperature control process, avoid large overshoot of the water outlet temperature, and avoid the situation of large temperature fluctuations or even boiling and gasification caused by out-of-control.

[0031] Specifically, the adjustment instruction can be a water use demand instruction triggered by the user when using the user terminal, such as making 40°C warm water, making 80°C hot water, etc.

[0032] Specifically, the adjustment instruction can be a driving instruction given by the system during the product R & D process, and the driving instruction includes the driving value of the water pump or the driving value of the heating component.

[0033] Specifically, the adjustment instruction can also be an instruction generated by changing the driving value of the water pump or changing the driving value of the heating component during the water outlet process in order for the temperature control system to adjust the water outlet temperature so that the water outlet temperature can meet the user's needs.

[0034] In any of the above technical solutions, the instant heating device includes a water pump, and the adjustment instruction includes information that the driving value of the water pump changes from the first driving value to the second driving value.

[0035] In this technical solution, the instant heating device includes a water pump, and the adjustment instruction includes information that the driving value of the water pump changes from the first driving value to the second driving value. The water outlet temperature prediction system starts to predict the water outlet temperature in response to the adjustment instruction that the driving value of the water pump changes from the first driving value to the second driving value.

[0036] It should be noted here that the water pump is used to drive the liquid to be heated by the instant heating device, such as water, but not limited to this. The driving value of the water pump can be voltage or current.

[0037] In any of the above technical solutions, before the step of responding to the adjustment instruction of the outlet water temperature of the instant heating device, it further includes: obtaining the lag time of the temperature detection device; setting the interval duration between the first moment and the second moment according to the lag time.

[0038] In this technical solution, due to the good process consistency of the temperature detection device, such as the NTC (Negative Temperature Coefficient) temperature sensor, the temperature lag times between different NTC temperature sensors are basically the same. Therefore, setting the interval duration between the first moment and the second moment, that is, the above-mentioned N seconds, based on this lag time can improve the accuracy of the predicted outlet water temperature.

[0039] It should be noted here that the meaning of this lag time is that the outlet water temperature value currently detected by the software is the real outlet water temperature value N seconds ago, or in other words, the current real outlet water temperature value can be detected in the software N seconds later.

[0040] Specifically, the lag time can be directly used as the interval duration between the first moment and the second moment.

[0041] Specifically, the interval duration between the first moment and the second moment can be set according to the lag time, the response speed of the water pump and / or the time required for the water temperature to change, etc.

[0042] According to the second aspect of the present invention, there is provided an outlet water temperature prediction device for an instant heating device. The instant heating device includes a temperature detection device for detecting the outlet water temperature of the instant heating device. The outlet water temperature prediction device includes: an acquisition unit for acquiring the first moment predicted outlet water temperature predicted at the first moment and using it as the initial temperature prediction value; a first calculation unit for determining a prediction deviation coefficient according to the initial temperature prediction value and the second actual outlet water temperature detected at the second moment; a second calculation unit for determining the difference between the second actual outlet water temperature and the first actual outlet water temperature at the first moment; taking the sum of the difference and the second actual outlet water temperature as the preliminary temperature prediction value; a third calculation unit for calculating the second moment predicted outlet water temperature according to the prediction deviation coefficient and the preliminary temperature prediction value, and using it as the new initial temperature prediction value, where the first moment is earlier than the second moment.

[0043] The water outlet temperature prediction device of the instant heating device provided by the present invention is used for the instant heating device. The instant heating device includes a temperature detection device, and the water outlet temperature of the instant heating device is detected by the temperature detection device. During the water outlet process, when it is necessary to adjust the water outlet temperature, the acquisition unit acquires the predicted water outlet temperature at the first moment predicted at the first moment, that is, the initial temperature prediction value. The initial temperature prediction value is the temperature obtained by predicting its true water outlet temperature at the first moment. Due to the delay, the second actual water outlet temperature detected by the system at the second moment is the true water outlet temperature at the first moment. Therefore, the first calculation unit can determine the prediction deviation coefficient according to the initial temperature prediction value and the second actual water outlet temperature. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate.

[0044] It should be noted here that the second moment is the current moment, and the first moment is earlier than the second moment. The time difference between the second moment and the first moment is N seconds.

[0045] The second calculation unit calculates the difference between the second actual water outlet temperature and the first actual water outlet temperature to obtain the temperature change value of the water outlet temperature within the previous N seconds. The second calculation unit calculates the sum of the temperature change value and the second actual water outlet temperature to obtain the preliminary temperature prediction value. The third calculation unit can calculate the more accurate predicted water outlet temperature at the second moment, that is, the new initial temperature prediction value, according to the preliminary temperature prediction value and the prediction deviation coefficient. The new initial temperature prediction value is close to the true water outlet temperature value. Using this initial temperature prediction value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0046] It should also be noted that the new initial temperature prediction value is continuously recorded and continuously used in the next N seconds. This is an iterative process, so that the water outlet temperature can be predicted in real time. The prediction deviation coefficient changes in real time and reflects whether the initial temperature prediction value N seconds ago is accurate. The closer the prediction deviation coefficient is to 1, the more accurate the prediction is. Through the water outlet temperature prediction device provided by the present invention, a more accurate temperature prediction value can be calculated. This prediction value is close to the true water outlet temperature value. Using this prediction value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0047] In the third aspect of the present invention, an instant heating device is proposed, including: a temperature detection device for detecting the water outlet temperature of the instant heating device; the water outlet temperature prediction device of the instant heating device as described in the above technical solution; wherein, the temperature detection device is connected to the water outlet temperature prediction device of the instant heating device.

[0048] The instant heating device provided by the present invention includes the outlet water temperature prediction device of the instant heating device in the above technical solution. Therefore, it has all the beneficial effects of the outlet water temperature prediction device of the instant heating device, and will not be elaborated one by one here.

[0049] In addition, the instant heating device further includes a temperature detection device, which can detect the outlet water temperature of the instant heating device. Specifically, the outlet water temperature can be detected at intervals of a preset time period. When the preset time period is 0, the outlet water temperature is detected in real time.

[0050] In the fourth aspect of the present invention, a water treatment device is proposed, including: the instant heating device in the above technical solution.

[0051] The water treatment device proposed by the present invention includes the instant heating device in the above technical solution. Therefore, it has all the beneficial effects of the above instant heating device, and will not be elaborated one by one here.

[0052] In the above technical solution, the water treatment device includes: a water dispenser, a water heater, and a water purifier.

[0053] In this technical solution, the water treatment device proposed by the present invention includes, but is not limited to, a water dispenser, a water heater, and a water purifier. They will not be listed one by one here.

[0054] In the fifth aspect of the present invention, a readable storage medium is proposed, on which a program is stored. When the program is executed by a processor, it implements the steps of the outlet water temperature prediction method of the instant heating device in any of the above technical solutions.

[0055] For the readable storage medium proposed by the present invention, when the stored program is executed, it can implement the steps of the outlet water temperature prediction method of the instant heating device in any of the above technical solutions. Therefore, it has all the beneficial effects of the control method of the above instant heating device, and will not be elaborated one by one here.

[0056] The additional aspects and advantages of the present invention will become obvious in the following description part, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0058] Figure 1 One of the flow diagrams showing the outlet water temperature prediction method of the instant heating device according to an embodiment of the present invention;

[0059] Figure 2 Another flow diagram showing the outlet water temperature prediction method of the instant heating device according to an embodiment of the present invention;

[0060] Figure 3Shows the third flow schematic diagram of the outlet water temperature prediction method of the instant heating device according to an embodiment of the present invention;

[0061] Figure 4 Shows the fourth flow schematic diagram of the outlet water temperature prediction method of the instant heating device according to an embodiment of the present invention;

[0062] Figure 5 Shows the fifth flow schematic diagram of the outlet water temperature prediction method of the instant heating device according to an embodiment of the present invention;

[0063] Figure 6 Shows the sixth flow schematic diagram of the outlet water temperature prediction method of the instant heating device according to an embodiment of the present invention;

[0064] Figure 7 Is a block diagram of the outlet water temperature prediction device of the instant heating device according to an embodiment of the present invention;

[0065] Figure 8 Is one of the structural schematic diagrams of the instant heating device according to an embodiment of the present invention;

[0066] Figure 9 Is the second structural schematic diagram of the instant heating device according to an embodiment of the present invention;

[0067] Figure 10 Is the third structural schematic diagram of the instant heating device according to an embodiment of the present invention;

[0068] Figure 11 Is the fourth structural schematic diagram of the instant heating device according to an embodiment of the present invention.

[0069] Among them, Figures 8 to 11 The corresponding relationship between the reference numerals in the drawings and the component names is:

[0070] 802 heating component, 804 temperature detection device, 806 water pump. Detailed implementation manners

[0071] In order to be able to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0072] Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the limitations of the specific embodiments disclosed below.

[0073] Next, refer to Figures 1 to 11 Describe the instant heating device and its outlet water temperature prediction method, prediction device, and water treatment equipment according to some embodiments of the present invention.

[0074] In an embodiment of the present invention, a method for predicting the outlet water temperature of an instant heating device is proposed. As Figure 1 shown, the method for predicting the outlet water temperature includes:

[0075] Step 102: Obtain the predicted outlet water temperature at the first moment and use it as the initial temperature prediction value;

[0076] Step 104: Obtain the second actual outlet water temperature detected at the second moment, and determine the prediction deviation coefficient according to the initial temperature prediction value and the second actual outlet water temperature;

[0077] Step 106: Obtain the first actual outlet water temperature at the first moment, and calculate the difference between the second actual outlet water temperature and the first actual outlet water temperature;

[0078] Step 108: Calculate the sum of the difference and the second actual outlet water temperature as the preliminary temperature prediction value;

[0079] Step 110: Calculate the predicted outlet water temperature at the second moment according to the prediction deviation coefficient and the preliminary temperature prediction value, and use it as the new initial temperature prediction value.

[0080] Wherein, the first moment is earlier than the second moment.

[0081] The method for predicting the outlet water temperature of the instant heating device provided by the embodiment of the present invention is used for the instant heating device. The instant heating device is provided with a temperature detection device, and the outlet water temperature of the instant heating device can be detected through the temperature detection device. During the water outlet process, when it is necessary to adjust the outlet water temperature, obtain the predicted outlet water temperature at the first moment predicted at the first moment, that is, the initial temperature prediction value. The initial temperature prediction value is the temperature obtained by predicting the true outlet water temperature at the first moment. Due to the delay, the second actual outlet water temperature detected by the system at the second moment is the true outlet water temperature at the first moment. Therefore, according to the initial temperature prediction value and the second actual outlet water temperature, the prediction deviation coefficient can be determined. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate.

[0082] It should be noted here that the second moment is the current moment, the first moment is earlier than the second moment, and the time difference between the second moment and the first moment is N seconds.

[0083] By calculating the difference between the second actual water outlet temperature and the first actual water outlet temperature, the temperature change value of the water outlet temperature within the previous N seconds is obtained. By calculating the sum of the temperature change value and the second actual water outlet temperature, a preliminary temperature prediction value is obtained. According to the preliminary temperature prediction value and the prediction deviation coefficient, a more accurate predicted water outlet temperature at the second moment, that is, a new initial temperature prediction value, can be calculated. The new initial temperature prediction value is close to the true water outlet temperature value. Using this temperature prediction initial value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0084] It should also be noted that the new initial temperature prediction value is continuously recorded and continuously used in the next N seconds. This is an iterative process, so that the water outlet temperature can be predicted in real time. The prediction deviation coefficient changes in real time and reflects whether the initial temperature prediction value N seconds ago is accurate. The closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0085] Through the water outlet temperature prediction method provided by the embodiments of the present invention, a more accurate temperature prediction value can be calculated. This prediction value is close to the true water outlet temperature value. Using this prediction value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0086] In an embodiment of the present invention, as Figure 2 shown, the water outlet temperature prediction method includes:

[0087] Step 202, obtaining the predicted water outlet temperature at the first moment to obtain the initial temperature prediction value;

[0088] Step 204, obtaining the second actual water outlet temperature detected at the second moment, comparing the second actual water outlet temperature with the initial temperature prediction value, and determining the prediction deviation coefficient according to the comparison result;

[0089] Step 206, obtaining the first actual water outlet temperature at the first moment and calculating the difference between the second actual water outlet temperature and the first actual water outlet temperature;

[0090] Step 208, calculating the sum of the difference and the second actual water outlet temperature to obtain a preliminary temperature prediction value;

[0091] Step 210, calculating the predicted water outlet temperature at the second moment according to the prediction deviation coefficient and the preliminary temperature prediction value, and using it as the new initial temperature prediction value.

[0092] It should be noted here that the second moment is the current moment, and the first moment is earlier than the second moment. The time difference between the second moment and the first moment is N seconds.

[0093] In this embodiment, the initial temperature prediction value is the temperature obtained by predicting the true outlet water temperature at the first moment. Due to the delay, the second actual outlet water temperature detected by the system at the second moment is the true outlet water temperature at the first moment. By comparing the second actual outlet water temperature with the initial temperature prediction value, the deviation degree between the two can be determined, and thus the prediction deviation coefficient can be determined according to the comparison result. The prediction deviation coefficient reflects whether the initial temperature prediction value at the first moment is accurate, that is, whether the initial temperature prediction value N seconds ago is accurate. Through the embodiments of the present invention, the prediction deviation coefficient can be determined. According to the prediction deviation coefficient, it can be judged whether the prediction in the previous N seconds is accurate. At the same time, the prediction deviation coefficient is constantly changing. Based on the prediction deviation coefficient and the preliminary temperature prediction value, a more accurate temperature prediction value can be calculated, and this prediction value is close to the true outlet water temperature value.

[0094] In the above embodiment, in step 204, comparing the second actual outlet water temperature detected at the second moment with the initial temperature prediction value, and determining the prediction deviation coefficient according to the comparison result specifically includes: determining the prediction deviation coefficient according to the quotient of the second actual outlet water temperature and the initial temperature prediction value.

[0095] In this embodiment, by calculating the ratio of the second actual outlet water temperature to the initial temperature prediction value, the deviation degree between the second actual outlet water temperature and the initial temperature prediction value can be determined, and the prediction deviation coefficient is determined according to this deviation degree. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate, that is, whether the initial temperature prediction value predicted N seconds before the current moment is accurate. The method for calculating the prediction deviation coefficient provided in this embodiment is simple and effective, so that the current outlet water temperature can be predicted quickly and accurately, improving the prediction accuracy and prediction speed of the outlet water temperature, and thus effectively improving the temperature control effect and avoiding various problems caused by temperature errors due to delay.

[0096] Among them, the closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0097] In a specific embodiment of the present invention, the quotient of the second actual outlet water temperature and the initial temperature prediction value is directly used as the prediction deviation coefficient.

[0098] In some embodiments of the present invention, the prediction deviation coefficient can also be determined according to the difference between the second actual outlet water temperature and the initial temperature prediction value. Among them, the closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0099] In an embodiment of the present invention, as Figure 3 shown, the outlet water temperature prediction method includes:

[0100] Step 302, obtaining the predicted outlet water temperature at the first moment to obtain the initial temperature prediction value;

[0101] Step 304: Obtain the second actual water outlet temperature detected at the second moment, compare the second actual water outlet temperature with the initial temperature prediction value, and determine the prediction deviation coefficient according to the comparison result;

[0102] Step 306: Calculate the difference between the second actual water outlet temperature and the first actual water outlet temperature at the first moment;

[0103] Step 308: Calculate the sum of the difference and the second actual water outlet temperature to obtain the preliminary temperature prediction value;

[0104] Step 310: Determine the predicted water outlet temperature at the second moment according to the product of the prediction deviation coefficient and the preliminary temperature prediction value, and use it as the new initial temperature prediction value.

[0105] In this embodiment, during the water outlet process, when the water outlet temperature needs to be adjusted, obtain the predicted water outlet temperature at the first moment predicted at the first moment, that is, the initial temperature prediction value. The initial temperature prediction value is the temperature obtained by predicting the true water outlet temperature at the first moment. Due to the delay, the second actual water outlet temperature detected by the system at the second moment is the true water outlet temperature at the first moment. Therefore, according to the initial temperature prediction value and the second actual water outlet temperature, the prediction deviation coefficient can be determined. The prediction deviation coefficient reflects whether the initial temperature prediction value at the first moment is accurate.

[0106] It should be noted here that the second moment is the current moment, and the first moment is earlier than the second moment. The time difference between the second moment and the first moment is N seconds.

[0107] By calculating the difference between the second actual water outlet temperature and the first actual water outlet temperature, the temperature change value of the water outlet temperature within the previous N seconds is obtained. By calculating the sum of the temperature change value and the second actual water outlet temperature, the preliminary temperature prediction value is obtained. According to the product of the prediction deviation coefficient and the preliminary temperature prediction value, the predicted water outlet temperature at the second moment, that is, the predicted value of the water outlet temperature at the current moment, can be determined. This predicted water outlet temperature value is close to the true water outlet temperature value. Using this predicted water outlet temperature value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0108] In a specific embodiment of the present invention, in step 310, the product of the prediction deviation coefficient and the preliminary temperature prediction value is directly used as the predicted water outlet temperature at the second moment.

[0109] In the above embodiment, in step 304, comparing the second actual water outlet temperature detected at the second moment with the initial temperature prediction value and determining the prediction deviation coefficient according to the comparison result specifically includes: determining the prediction deviation coefficient according to the quotient of the second actual water outlet temperature and the initial temperature prediction value.

[0110] In this embodiment, by calculating the ratio of the second actual water outlet temperature to the initial temperature prediction value, the deviation degree between the second actual water outlet temperature and the initial temperature prediction value can be determined, and the prediction deviation coefficient is determined according to this deviation degree. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate, that is, whether the initial temperature prediction value predicted in the first N seconds before the current moment is accurate. The method for calculating the prediction deviation coefficient provided in this embodiment is simple and effective, so that the current water outlet temperature can be predicted quickly and accurately, improving the prediction accuracy and prediction speed of the water outlet temperature, and thus effectively improving the temperature control effect and avoiding various problems caused by temperature errors due to delay. Among them, the closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0111] In an embodiment of the present invention, it further includes: storing the second actual water outlet temperature; storing the predicted water outlet temperature at the second moment.

[0112] In this embodiment, during the water outlet process, when the water outlet temperature needs to be adjusted, the predicted water outlet temperature at the first moment predicted at the first moment is obtained, that is, the initial temperature prediction value. The initial temperature prediction value is the temperature obtained by predicting its true water outlet temperature at the first moment. Due to the reason of delay, the second actual water outlet temperature detected by the system at the second moment is the true water outlet temperature at the first moment. Therefore, according to the initial temperature prediction value and the second actual water outlet temperature, the prediction deviation coefficient can be determined. The prediction deviation coefficient reflects whether the initial temperature prediction value at the first moment is accurate.

[0113] In this embodiment, by calculating the difference between the second actual water outlet temperature and the first actual water outlet temperature, the temperature change value of the water outlet temperature within the previous N seconds is obtained. By calculating the sum of this temperature change value and the second actual water outlet temperature, a preliminary temperature prediction value is obtained. According to the preliminary temperature prediction value and the prediction deviation coefficient, a more accurate predicted water outlet temperature at the second moment, that is, a new initial temperature prediction value, can be calculated.

[0114] Among them, the second actual water outlet temperature, that is, the actual water outlet temperature detected at the current moment, is continuously recorded and can be continuously used in the next N seconds to calculate the temperature change value within the next N seconds. The predicted water outlet temperature at the second moment, that is, the new initial temperature prediction value, is continuously recorded and continuously used in the next N seconds to calculate a new prediction deviation coefficient. Therefore, the prediction deviation coefficient is constantly changing. This is an iterative process, so that the water outlet temperature can be predicted more accurately in real time.

[0115] In an embodiment of the present invention, as Figure 4 shown, the method for predicting the water outlet temperature includes:

[0116] Step 402: Receive the adjustment instruction for the outlet water temperature, obtain the predicted outlet water temperature at the first moment, and get the initial temperature prediction value.

[0117] Step 404: Obtain the second actual outlet water temperature detected at the second moment, calculate the ratio of the second actual outlet water temperature to the initial temperature prediction value, and determine the prediction deviation coefficient according to the ratio.

[0118] Step 406: Obtain the first actual outlet water temperature at the first moment, and calculate the difference between the second actual outlet water temperature and the first actual outlet water temperature.

[0119] Step 408: Calculate the sum of the difference and the second actual outlet water temperature to obtain the preliminary temperature prediction value.

[0120] Step 410: Determine the predicted outlet water temperature at the second moment according to the product of the prediction deviation coefficient and the preliminary temperature prediction value, and use it as the new initial temperature prediction value.

[0121] In this embodiment, when receiving the adjustment instruction for the outlet water temperature, obtain the predicted outlet water temperature at the first moment predicted at the first moment, and use it as the initial temperature prediction value for predicting the outlet water temperature at the current moment, so as to obtain a new initial temperature prediction value. The temperature control system can accurately grasp the actual situation of the outlet water temperature, and use the new initial temperature prediction value to control the outlet water temperature, which can eliminate the influence caused by feedback lag during the temperature control process, avoid large overshoot of the outlet water temperature, and avoid the situation of large temperature fluctuations or even out-of-control boiling and gasification.

[0122] Specifically, the adjustment instruction can be a water use demand instruction triggered by the user when using the user terminal, such as making 40°C warm water, making 80°C hot water, etc.

[0123] Specifically, the adjustment instruction can be a driving instruction given by the system during the product R & D process, and the driving instruction includes the driving value of the water pump or the driving value of the heating component.

[0124] Specifically, the adjustment instruction can also be an instruction generated during the water outlet process when the temperature control system changes the driving value of the water pump or the driving value of the heating component in order to adjust the outlet water temperature so that the outlet water temperature can meet the user's needs.

[0125] Further, the instant heating device includes a water pump, and the adjustment instruction includes information that the driving value of the water pump changes from the first driving value to the second driving value.

[0126] In this embodiment, when the driving value of the water pump changes from the first driving value to the second driving value, the prediction of the outlet water temperature starts.

[0127] It should be noted here that the water pump is used to drive the liquid to be heated by the instant heating device, such as water, but not limited to this. The driving value of the water pump can be voltage or current.

[0128] In an embodiment of the present invention, before the step of responding to the adjustment instruction of the outlet water temperature of the instant heating device, it further includes: obtaining the lag time of the temperature detection device; setting the interval duration between the first moment and the second moment according to the lag time.

[0129] In this embodiment, due to the good process consistency of the temperature detection device, such as the NTC temperature sensor, the temperature lag times between different NTC temperature sensors are basically the same. Therefore, setting the interval duration between the first moment and the second moment based on this lag time, that is, the above-mentioned N seconds, can improve the accuracy of predicting the outlet water temperature.

[0130] It should be noted here that the meaning of this lag time is that the outlet water temperature value currently detected by the software is the real outlet water temperature value N seconds ago, or rather, the current real outlet water temperature value can be detected in the software N seconds later.

[0131] Specifically, directly use this lag time as the interval duration between the first moment and the second moment.

[0132] Specifically, set the interval duration between the first moment and the second moment according to this lag time, the water pump response speed, and / or the time required for the water temperature to change, etc.

[0133] In an embodiment of the present invention, as Figure 5 shown, the method for predicting the outlet water temperature includes:

[0134] Step 502, obtaining the driving value of the water pump;

[0135] Step 504, determining whether the driving value of the water pump has changed; if so, execute step 506; if not, return to step 502;

[0136] Step 506, obtaining the predicted outlet water temperature at the first moment and using it as the initial value of temperature prediction;

[0137] Step 508, obtaining the second actual outlet water temperature detected at the second moment, comparing the second actual outlet water temperature with the initial value of temperature prediction, and determining the prediction deviation coefficient according to the comparison result;

[0138] Step 510, obtaining the first actual outlet water temperature at the first moment, and calculating the difference between the second actual outlet water temperature and the first actual outlet water temperature;

[0139] Step 512, calculating the sum of the difference and the second actual outlet water temperature to obtain the preliminary temperature prediction value;

[0140] Step 514: Calculate the product of the prediction deviation coefficient and the preliminary temperature prediction value to obtain the predicted water outlet temperature at the second moment, and use it as the new initial temperature prediction value.

[0141] In this embodiment, the instant heating device includes a temperature detection device, which detects the water outlet temperature of the instant heating device. In this embodiment, the temperature detection device detects the water outlet temperature in real time.

[0142] During the water outlet process, by obtaining the driving value of the water pump, it is judged whether the driving value of the water pump changes to determine whether the water outlet temperature needs to be adjusted. When the driving value of the water pump changes, for example, from the first driving value to the second driving value, it indicates that the water outlet temperature needs to be adjusted. When the water outlet temperature needs to be adjusted, obtain the predicted water outlet temperature at the first moment predicted at the first moment, that is, the initial temperature prediction value. The initial temperature prediction value is the temperature obtained by predicting the true water outlet temperature at the first moment. Due to the delay, the second actual water outlet temperature detected by the system at the second moment is the true water outlet temperature at the first moment. Therefore, according to the initial temperature prediction value and the second actual water outlet temperature, the prediction deviation coefficient can be determined. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate.

[0143] It should be noted here that the second moment is the current moment, and the first moment is earlier than the second moment. The time difference between the second moment and the first moment is N seconds.

[0144] By calculating the difference between the second actual water outlet temperature and the first actual water outlet temperature, the temperature change value of the water outlet temperature within the previous N seconds is obtained. By calculating the sum of this temperature change value and the second actual water outlet temperature, the preliminary temperature prediction value is obtained. According to the preliminary temperature prediction value and the prediction deviation coefficient, a more accurate predicted water outlet temperature at the second moment, that is, the new initial temperature prediction value, can be calculated. The new initial temperature prediction value is close to the true water outlet temperature value. Using this initial temperature prediction value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0145] It should also be noted that the new initial temperature prediction value is continuously recorded and continuously used in the next N seconds. This is an iterative process, so that the water outlet temperature can be predicted in real time. The prediction deviation coefficient changes in real time and reflects whether the initial temperature prediction value N seconds ago is accurate. The closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0146] Through the outlet water temperature prediction method provided in this embodiment, a relatively accurate temperature prediction value can be calculated, and the prediction value is close to the actual outlet water temperature value. Using the prediction value to control the outlet water temperature can effectively improve the temperature control effect and avoid problems such as large overshoot caused by temperature error due to delay, large temperature fluctuations and even boiling and vaporization caused by water temperature out of control.

[0147] In addition, the instant heating device also includes a heating component, which is used to heat the liquid pumped by the water pump. It is also possible to obtain the driving value of the heating component to determine whether the driving value of the heating component has changed. When the driving value of the heating component has changed, it means that the outlet water temperature needs to be adjusted. At this time, the outlet water temperature of the instant heating device can be predicted.

[0148] The driving value of the heating component may be a voltage or a current.

[0149] When the software needs to change the working voltage of the water pump to adjust the outlet water temperature, due to the superposition of multiple factors such as the water pump response speed, the time required for water temperature change, and the response lag of the outlet water temperature sensor, there is a certain error caused by delay between the actual outlet water temperature and the outlet water temperature detected by the software. The temperature control system is difficult to accurately control the actual situation of the outlet water temperature, which can easily lead to large overshoot, large temperature fluctuations, and even out-of-control of the water temperature, leading to boiling and vaporization.

[0150] In one embodiment of the present invention, a method for predicting the outlet water temperature of an instant heating device is provided, wherein the instant heating device includes a temperature detection device, and the temperature detection device is used to detect the outlet water temperature of the instant heating device. In this embodiment, the temperature detection device is an NTC temperature sensor.

[0151] Because the NTC process consistency of the outlet water temperature of the instant heating device is good, the temperature lag time between different samples is basically the same. Based on this, we obtained the NTC lag time as N (in seconds) through experiments. The meaning of this lag time is that the outlet water temperature value currently detected by the software is the actual outlet water temperature value N seconds ago, or the current actual outlet water temperature value needs to be detected in the software after N seconds.

[0152] Using the N value obtained from the experiment, the following algorithm design is performed:

[0153] (1) Compare the current detected outlet water temperature T1 with the outlet water temperature T0 detected N seconds ago in real time to obtain the change value ΔT of the outlet water temperature in the previous N seconds:

[0154] ΔT = T1 - T0;

[0155] (2) Use ΔT in (1) to superimpose on T1 to obtain the current preliminary temperature prediction value Y 初 ;

[0156] Y 初 = ΔT + T1; ①

[0157] (3) Compare the currently detected outlet water temperature T1 with the initial temperature prediction value Y obtained N seconds ago in real time 初0 to obtain a prediction deviation coefficient K, which changes in real time and reflects the accuracy of the initial temperature prediction value Y N seconds ago. The closer it is to 1, the more accurate it is; 初0

[0158]

[0159] (4) Multiply the current prediction deviation coefficient K by the current preliminary temperature prediction value Y 初 to obtain the real-time temperature prediction formula:

[0160]

[0161] where Y is the current temperature prediction value, T1 is the outlet water temperature detected by the current temperature detection device, T0 is the outlet water temperature detected by the temperature detection device N seconds ago, Y 初0 is the initial temperature prediction value calculated N seconds ago, and Y 初0 is calculated through the values of the previous 2N seconds.

[0162] It should be noted that T1 is the second actual outlet water temperature detected at the second moment; T0 is the first actual outlet water temperature at the first moment; Y 初0 is the predicted outlet water temperature at the first moment predicted at the first moment; Y is the predicted outlet water temperature at the second moment. The time interval between the first moment and the second moment is N seconds.

[0163] The following further describes the outlet water temperature prediction method of the instant heating device in this embodiment with reference to Figure 6 As shown in Figure 6 the outlet water temperature prediction method includes:

[0164] Step 602: Compare the currently detected outlet water temperature with the outlet water temperature detected N seconds ago to obtain the change value ΔT of the outlet water temperature within the previous N seconds;

[0165] Step 604: Obtain the preliminary temperature prediction value by substituting ΔT into formula ①;

[0166] Step 606: The software compares the currently detected outlet water temperature with the initial temperature prediction value obtained N seconds ago in real time to obtain the prediction deviation coefficient K;

[0167] Step 608: Substitute into the general formula ② to obtain the current temperature prediction value.

[0168] ​The method for predicting the outlet water temperature of the instant heating device provided in this embodiment, when the system needs to change the driving voltage of the water pump, obtains a relatively accurate temperature prediction value by collecting the outlet water temperature value in real time and through a series of special processes. This prediction value is close to the real outlet water temperature value. The software uses this prediction value to control the outlet water temperature, avoiding problems such as large overshoot, large temperature fluctuations, and even water temperature runaway leading to boiling and vaporization caused by feedback lag.

[0169] It should be noted here that the driving voltage of the water pump is changed by adjusting the driving value of the water pump. Among them, the driving value can be voltage or current.

[0170] The method for predicting the outlet water temperature of the instant heating device provided in this embodiment is very simple and can effectively improve the accuracy of the prediction result, thereby effectively improving the temperature control effect.

[0171] In an embodiment of the present invention, as Figure 7 shown, the outlet water temperature prediction device 700 of the instant heating device includes:

[0172] An acquisition unit 702, configured to acquire the predicted outlet water temperature at the first moment predicted at the first moment to obtain an initial temperature prediction value;

[0173] A first calculation unit 704, configured to calculate a prediction deviation coefficient according to the initial temperature prediction value and the second actual outlet water temperature detected at the second moment;

[0174] A second calculation unit 706, configured to calculate the difference between the second actual outlet water temperature and the first actual outlet water temperature at the first moment; calculate the sum of the difference and the second actual outlet water temperature to obtain a preliminary temperature prediction value;

[0175] A third calculation unit 708, configured to calculate the predicted outlet water temperature at the second moment according to the prediction deviation coefficient and the preliminary temperature prediction value, and use it as a new initial temperature prediction value.

[0176] Wherein, the first moment is earlier than the second moment.

[0177] The water outlet temperature prediction device 700 of the instant heating device provided by the embodiment of the present invention is used for the instant heating device. The instant heating device is provided with a temperature detection device, and the temperature detection device can detect the water outlet temperature of the instant heating device. During the water outlet process, when it is necessary to adjust the water outlet temperature, the acquisition unit 702 acquires the predicted water outlet temperature at the first moment predicted at the first moment, that is, the initial temperature prediction value. The initial temperature prediction value is the temperature obtained by predicting its true water outlet temperature at the first moment. Due to the reason of delay, the second actual water outlet temperature detected by the system at the second moment is the true water outlet temperature at the first moment. Therefore, the first calculation unit 704 can determine the prediction deviation coefficient according to the initial temperature prediction value and the second actual water outlet temperature. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate.

[0178] It should be noted here that the second moment is the current moment, and the first moment is earlier than the second moment, and the time difference between the second moment and the first moment is N seconds.

[0179] The second calculation unit 706 calculates the difference between the second actual water outlet temperature and the first actual water outlet temperature to obtain the temperature change value of the water outlet temperature within the previous N seconds. The second calculation unit 706 calculates the sum of the temperature change value and the second actual water outlet temperature to obtain the preliminary temperature prediction value. The third calculation unit 708 can calculate the more accurate predicted water outlet temperature at the second moment, that is, the new initial temperature prediction value, according to the preliminary temperature prediction value and the prediction deviation coefficient. The new initial temperature prediction value is close to the true water outlet temperature value. Using this temperature prediction value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0180] It should also be noted that the new initial temperature prediction value is continuously recorded and continuously used in the next N seconds. This is an iterative process, so that the water outlet temperature can be predicted in real time. The prediction deviation coefficient changes in real time and reflects whether the initial temperature prediction value N seconds ago is accurate. The closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0181] Through the water outlet temperature prediction device 700 of the instant heating device provided by the embodiment of the present invention, a more accurate temperature prediction value can be calculated. This prediction value is close to the true water outlet temperature value. Using this prediction value for water outlet temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0182] Furthermore, the acquisition unit 702 acquires the predicted water outlet temperature at the first moment predicted at the first moment, that is, the initial temperature prediction value, in response to the adjustment instruction of the water outlet temperature.

[0183] Specifically, the adjustment instruction can be a water usage demand instruction triggered by the user when using the user terminal, such as an instruction to produce warm water at 40°C or hot water at 80°C.

[0184] Specifically, the adjustment instruction can be a driving instruction given by the system during the product R & D process, where the driving instruction includes the driving value of the water pump or the driving value of the heating component.

[0185] Specifically, the adjustment instruction can also be an instruction generated during the water outlet process by the temperature control system to adjust the water outlet temperature so that the water outlet temperature can meet the user's requirements, by changing the driving value of the water pump or changing the driving value of the heating component.

[0186] Further, the first calculation unit 704 determines the prediction deviation coefficient according to the quotient of the second actual water outlet temperature and the initial temperature prediction value.

[0187] In this embodiment, by calculating the ratio of the second actual water outlet temperature to the initial temperature prediction value, the deviation degree between the second actual water outlet temperature and the initial temperature prediction value can be determined, and the prediction deviation coefficient is determined according to this deviation degree. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate, that is, whether the initial temperature prediction value predicted in the previous N seconds of the current moment is accurate. The method for calculating the prediction deviation coefficient provided in this embodiment is simple and effective, so that the current water outlet temperature can be predicted quickly and accurately, improving the prediction accuracy and prediction speed of the water outlet temperature, and thus effectively improving the temperature control effect and avoiding various problems caused by temperature errors due to delay. Among them, the closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0188] Further, the third calculation unit 708 determines the predicted water outlet temperature at the second moment according to the product of the prediction deviation coefficient and the preliminary temperature prediction value.

[0189] Further, the water outlet temperature prediction device 700 of the instant heating device further includes a storage unit, and the second actual water outlet temperature and the predicted water outlet temperature at the second moment are stored through the storage unit.

[0190] In this embodiment, the second actual water outlet temperature, that is, the water outlet temperature detected at the current moment, is continuously recorded and can be continuously used in the next N seconds to calculate the temperature change value within the next N seconds. The predicted water outlet temperature at the second moment, that is, the new initial temperature prediction value, is continuously recorded and continuously used in the next N seconds to calculate the new prediction deviation coefficient. Therefore, the prediction deviation coefficient is constantly changing. This is an iterative process, so that the water outlet temperature can be predicted more accurately in real time.

[0191] Further, an obtaining unit 702 obtains the hysteresis time of the temperature detection device; and sets the time difference between the first moment and the second moment according to the hysteresis time.

[0192] In this embodiment, due to the good process consistency of the temperature detection device, such as an NTC temperature sensor, the temperature hysteresis times between different NTC temperature sensors are basically the same. Therefore, setting the interval duration between the first moment and the second moment, that is, the above-mentioned N seconds, based on this hysteresis time can improve the accuracy of the predicted outlet water temperature.

[0193] It should be noted here that the meaning of this hysteresis time is that the outlet water temperature value currently detected by the software is the real outlet water temperature value N seconds ago, or in other words, the current real outlet water temperature value can only be detected in the software N seconds later.

[0194] Specifically, the hysteresis time can be directly used as the interval duration between the first moment and the second moment.

[0195] Specifically, the interval duration between the first moment and the second moment can also be set according to the hysteresis time, the pump response speed, and / or the time required for the water temperature to change, etc.

[0196] In the third aspect embodiment of the present invention, an instant heating device is proposed, as Figure 8 , Figure 9 , Figure 10 , Figure 11 shown, the instant heating device includes: an outlet water temperature prediction device 700 of the instant heating device as described in the above embodiment.

[0197] Therefore, the instant heating device provided in this embodiment has all the beneficial effects of the outlet water temperature prediction device 700 of this instant heating device, and will not be elaborated one by one here.

[0198] In addition, the instant heating device further includes a temperature detection device 804, a heating component 802, and an outlet water pipeline. Among them, the heating component 802 can operate and heat the liquid, and the temperature detection device 804 can detect the outlet water temperature of the instant heating device. The outlet end of the heating component 802 is connected to the outlet water pipeline, and the temperature detection device 804 is arranged on the outlet water pipeline to detect the outlet water temperature of the instant heating device.

[0199] The outlet water temperature prediction device 700 of the instant heating device is electrically connected to the temperature detection device 804, and can accurately predict the outlet water temperature at the current moment by collecting the outlet water temperature detected by the temperature detection device 804 in real time. The predicted value is close to the real outlet water temperature value. Using this predicted value for outlet water temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay, so that the outlet water temperature meets the user's outlet water requirements.

[0200] In addition, the instant heating device further includes a water pump 806, which can be used to drive the liquid, and the above-mentioned heating component 802 can be used to heat the liquid driven by the water pump 806. Specifically, the above-mentioned heating component 802 is a heating pipe, and the temperature detection device 804 is a temperature sensor. In addition, the above-mentioned temperature detection device 804 can be arranged at the water inlet of the heating pipe, so that the temperature detection device 804 can detect the inlet water temperature and the outlet water temperature of the instant heating device.

[0201] In this embodiment, further, the temperature detection device 804 is specifically an NTC temperature sensor. Because the NTC temperature sensor has good process consistency, the temperature lag time between different NTC temperature sensors is basically the same. The meaning of this lag time is that the outlet water temperature value detected by the software currently is the real outlet water temperature value T seconds ago, or in other words, the current real outlet water temperature value needs to be detected in the software after N seconds. Therefore, setting the interval duration between the first moment and the second moment, that is, the above-mentioned N seconds, based on this lag time can improve the accuracy of the outlet water temperature prediction.

[0202] In addition, the instant heating device proposed in the embodiment of the present invention also has the following advantages: energy saving; the instant heating device heats up as it is used, and there is no need to carry out hot water reserve work such as long-term heating and heat preservation inside the instant heating device, reducing energy loss. The product volume is reduced, and the space adaptability is high. Since there is no need to reserve hot water inside the instant heating device, the structural design can reduce the product volume. Low cost. Because there is no need for a water storage heat tank and related heating detection components inside the instant heating device, the product cost can be reduced. Users can set the outlet water temperature and the water output according to their needs. The temperature control unit and the volume calculation unit inside the instant heating device can quickly and accurately reach the target temperature by heating and adjusting the water flow rate, meeting the user's outlet water requirements.

[0203] In the fourth aspect embodiment of the present invention, a water treatment device (not shown in the figure) is proposed, including: the instant heating device as described in the above embodiment.

[0204] The water treatment device proposed in the embodiment of the present invention includes the instant heating device as described in the above embodiment. Therefore, when the water treatment device in this embodiment needs to adjust the outlet water temperature in the system, by collecting the outlet water temperature value in real time and after a series of special treatments, a relatively accurate temperature prediction value can be obtained. This prediction value is close to the real outlet water temperature value, and the software uses this prediction value to control the outlet water temperature, avoiding problems such as large overshoot, large temperature fluctuations, and even water temperature out of control leading to boiling and vaporization caused by feedback lag. Specifically:

[0205] This water treatment device can detect the outlet water temperature of the instant heating device through a temperature detection device. It can detect whether the driving value of the water pump changes to determine whether the system needs to adjust the outlet water temperature. During the water outlet process, when it is necessary to adjust the outlet water temperature, the predicted outlet water temperature at the first moment, that is, the initial temperature prediction value, is obtained. The initial temperature prediction value is the temperature obtained by predicting the true outlet water temperature at the first moment. Due to the delay, the second actual outlet water temperature detected by the system at the second moment is the true outlet water temperature at the first moment. Therefore, based on the initial temperature prediction value and the second actual outlet water temperature, the prediction deviation coefficient can be determined. The prediction deviation coefficient reflects whether the initial temperature prediction value predicted at the first moment is accurate.

[0206] It should be noted here that the second moment is the current moment, and the first moment is earlier than the second moment. The time difference between the second moment and the first moment is N seconds.

[0207] By calculating the difference between the second actual outlet water temperature and the first actual outlet water temperature, the temperature change value of the outlet water temperature within the previous N seconds is obtained. By calculating the sum of this temperature change value and the second actual outlet water temperature, the preliminary temperature prediction value is obtained. Based on the preliminary temperature prediction value and the prediction deviation coefficient, a more accurate predicted outlet water temperature at the second moment, that is, the new initial temperature prediction value, can be calculated. The new initial temperature prediction value is close to the true outlet water temperature value. Using this temperature prediction value for outlet water temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0208] It should also be noted that the new initial temperature prediction value is continuously recorded and continuously used in the next N seconds. This is an iterative process, so that the outlet water temperature can be predicted in real time. The prediction deviation coefficient changes in real time and reflects whether the initial temperature prediction value N seconds ago is accurate. The closer the prediction deviation coefficient is to 1, the more accurate the prediction is.

[0209] Therefore, the water treatment device provided by the embodiment of the present invention can calculate a more accurate temperature prediction value, which is close to the true outlet water temperature value. Using this prediction value for outlet water temperature control can effectively improve the temperature control effect and avoid various problems caused by temperature errors due to delay.

[0210] In addition, the water treatment device proposed in the embodiments of the present invention also has the following advantages: energy saving; the water treatment device heats water as needed, and there is no need to carry out hot water reserve work such as long-term heating and heat preservation inside the water treatment device, reducing energy loss. The product volume is reduced, and the space adaptability is high. Since there is no need for hot water reserve inside the water treatment device, the structural design can reduce the product volume. Low cost. Since there is no need for a water storage heat filling and related heating detection elements inside the water treatment device, the product cost can be reduced. Users can set the outlet water temperature and the water output according to their needs, and the temperature control unit and the volume calculation unit inside the water treatment device can quickly and accurately reach the target temperature by heating and adjusting the water flow rate, meeting the user's water outlet requirements.

[0211] In the above embodiment, further, the water treatment device includes: a water dispenser, a water heater, and a water purifier.

[0212] In this embodiment, the water treatment device proposed by the present invention includes but is not limited to a water dispenser, a water heater, and a water purifier. They are not listed one by one here.

[0213] In the fifth aspect embodiment of the present invention, a readable storage medium (not shown in the figure) is proposed, on which a program is stored, and when the program is executed by a processor, the steps of the outlet water temperature prediction method of the instant heating device in any of the above embodiments are implemented.

[0214] When the program stored in the readable storage medium proposed in the embodiments of the present invention is executed, the steps of the outlet water temperature prediction method of the instant heating device in any of the above embodiments can be implemented. Therefore, it has all the beneficial effects of the control method of the above instant heating device, and will not be elaborated one by one here.

[0215] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance unless otherwise clearly specified and defined; the terms "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0216] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0217] In addition, the technical solutions between the various embodiments of the present invention may be combined with each other, provided that they can be implemented by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be implemented, such a combination of technical solutions shall be considered non-existent and shall not fall within the scope of protection required by the present invention.

[0218] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for predicting the outlet water temperature of an instant heating device, characterized in that, The instant heating device includes a temperature detection device for detecting the outlet water temperature of the instant heating device. The outlet water temperature prediction method includes: Obtaining the predicted outlet water temperature at the first moment predicted at the first moment and using it as the initial temperature prediction value; Determining a prediction deviation coefficient based on the initial temperature prediction value and the second actual outlet water temperature detected at the second moment; Determining the difference between the second actual outlet water temperature and the first actual outlet water temperature at the first moment; Using the sum of the difference and the second actual outlet water temperature as the preliminary temperature prediction value; Calculating the predicted outlet water temperature at the second moment based on the prediction deviation coefficient and the preliminary temperature prediction value, and using it as the new initial temperature prediction value; The step of obtaining the predicted outlet water temperature at the first moment predicted at the first moment and using it as the initial temperature prediction value specifically includes: Responding to an adjustment instruction for the outlet water temperature of the instant heating device, obtaining the predicted outlet water temperature at the first moment predicted at the first moment and using it as the initial temperature prediction value, where the adjustment instruction is a water use demand instruction triggered by the user, a driving instruction given by the system, or an instruction generated by the system to adjust the outlet water temperature.

2. The method for predicting the outlet water temperature of an instant heating device according to claim 1, characterized in that, The step of determining a prediction deviation coefficient based on the initial temperature prediction value and the second actual outlet water temperature detected at the second moment specifically includes: Determining the prediction deviation coefficient based on the quotient of the second actual outlet water temperature and the initial temperature prediction value.

3. The method for predicting the outlet water temperature of an instant heating device according to claim 1 or 2, characterized in that, The step of calculating the predicted outlet water temperature at the second moment based on the prediction deviation coefficient and the preliminary temperature prediction value specifically includes: Determining the predicted outlet water temperature at the second moment based on the product of the prediction deviation coefficient and the preliminary temperature prediction value.

4. The method for predicting the outlet water temperature of an instant heating device according to claim 3, characterized in that, It further includes: Storing the second actual outlet water temperature.

5. The method for predicting the outlet water temperature of an instant heating device according to claim 4, characterized in that, Storing the predicted outlet water temperature at the second moment.

6. The method for predicting the outlet water temperature of an instant heating device according to claim 3, characterized in that, The instant heating device includes a water pump, and the adjustment instruction includes information that the driving value of the water pump changes from a first driving value to a second driving value.

7. The method for predicting the outlet water temperature of an instant heating device according to claim 6, characterized in that, Before the step of responding to the adjustment instruction for the outlet water temperature of the instant heating device, it further includes: Obtaining the lag time of the temperature detection device; Setting the interval duration between the first moment and the second moment according to the lag time.

8. An apparatus for predicting the outlet water temperature of an instant heating device, characterized in that, The instant heating device includes a temperature detection device for detecting the outlet water temperature of the instant heating device. The outlet water temperature prediction device includes: An obtaining unit for obtaining the predicted outlet water temperature at the first moment predicted at the first moment and using it as the initial temperature prediction value; A first calculation unit for determining a prediction deviation coefficient based on the initial temperature prediction value and the second actual outlet water temperature detected at the second moment; A second calculation unit for determining the difference between the second actual outlet water temperature and the first actual outlet water temperature at the first moment; using the sum of the difference and the second actual outlet water temperature as the preliminary temperature prediction value; A third calculation unit for calculating the predicted outlet water temperature at the second moment based on the prediction deviation coefficient and the preliminary temperature prediction value, and using it as the new initial temperature prediction value; The obtaining unit is specifically configured to: in response to an adjustment instruction for the outlet water temperature of the instant heating device, obtain the predicted outlet water temperature at the first moment predicted at the first moment, that is, the initial temperature prediction value, where the adjustment instruction is a water usage demand instruction triggered by a user, a driving instruction given by the system, or an instruction generated by the system to achieve the adjustment of the outlet water temperature.

9. An instant heating device, characterized in that, Comprising: a temperature detection device configured to detect the outlet water temperature of the instant heating device; the outlet water temperature prediction device of the instant heating device as claimed in claim 8; wherein the temperature detection device is connected to the outlet water temperature prediction device of the instant heating device.

10. The instant heating device according to claim 9, wherein, Further comprising: a heating component; a water outlet pipeline connected to the water outlet end of the heating component; the temperature detection device is disposed on the water outlet pipeline.

11. A water treatment device, wherein, Comprising: the instant heating device as claimed in claim 9 or 10.

12. The water treatment device according to claim 11, wherein, The water treatment equipment includes: a water dispenser, a water heater, and a water purifier.

13. A storage medium, on which a program is stored, wherein, When the program is executed by a processor, it implements the outlet water temperature prediction method of the instant heating device as claimed in any one of claims 1 to 7.

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