A method and device for managing the service life of an enamel liner, a storage medium and an electric water heater

Abstract

The application relates to a service life management method of an enamel liner, and the method comprises the following steps: obtaining a target data set of an electric water heater; target data in the target data set at least comprises an inlet water temperature when the electric water heater is filled with water, a water storage temperature of the enamel liner when the electric water heater is used, and an upper limit of the residual water temperature of the residual hot water in the enamel liner when the electric water heater stops being used; each target data in the target data set is compared with a corresponding preset threshold value, and target data meeting a preset permission opening condition of each target data is taken as reference data; whether a high-temperature permission of the electric water heater is opened is determined based on the quantity of the reference data. The application solves the technical problem that the existing electric water heater saves hot water supply in the form of increasing the rated temperature, thereby intensifying the loss rate of the enamel liner.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric water heaters, and in particular to a service life management method and device for an enamel liner, a storage medium and an electric water heater. BACKGROUND

[0002] In the prior art, the electric water heater is usually used to increase the supply of hot water by increasing the rated temperature. However, the water storage type product that increases the rated temperature lacks a start-up limit for the function of increasing the rated temperature, which may induce some users to store hot water at a high temperature for a long time. However, the increase in temperature will accelerate the wear rate of the enamel liner and increase the risk of water leakage of the enamel liner. SUMMARY

[0003] The present application provides a service life management method, system, device and storage medium for an enamel liner to solve the problem of the prior art that the electric water heater saves the supply of hot water by increasing the rated temperature, thereby causing the technical problem of accelerated wear rate of the enamel liner.

[0004] In a first aspect, the present application provides a service life management method for an enamel liner for an electric water heater, the method comprising:

[0005] obtaining a target data set of the electric water heater, the target data in the target data set including at least the water inlet temperature when the electric water heater is filled with water, the water storage temperature of the enamel liner when the electric water heater is used, and the upper limit of the residual water temperature in the enamel liner when the electric water heater stops being used;

[0006] comparing each target data in the target data set with a corresponding preset threshold, and taking the target data that meets the preset permission start condition of each target data as reference data;

[0007] determining whether to start the high-temperature water storage permission of the electric water heater based on the number of the reference data.

[0008] In a second aspect, the present application provides a service life management device for an enamel liner, the device comprising:

[0009] a data acquisition module configured to obtain a target data set of the electric water heater, the target data in the target data set including at least the water inlet temperature when the electric water heater is filled with water, the water storage temperature of the enamel liner when the electric water heater is used, and the upper limit of the residual water temperature in the enamel liner when the electric water heater stops being used;

[0010] a data determination module configured to compare each target data in the target data set with a corresponding preset threshold, and take the target data that meets the preset permission start condition of each target data as reference data;

[0011] The permission starting module is configured to determine whether to start the high-temperature water storage permission of the electric water heater based on the quantity of the reference data.

[0012] In a third aspect, the present application provides an electric water heater, which can execute the service life management method of the enamel liner when working. The electric water heater comprises, from outside to inside, a shell, a thermal insulation layer and the enamel liner. A water inlet and a water outlet are arranged on the enamel liner. A water flow sensor is arranged in the water inlet and / or the water outlet. A heating device and at least one temperature probe are arranged in the enamel liner. A controller is arranged on the electric water heater and electrically connected with the heating device, the temperature probe and the water flow sensor.

[0013] The controller is configured to receive data detected by the temperature probe and the water flow sensor and control the working state of the heating device according to the received data.

[0014] The heating device is configured to heat water in the enamel liner according to the control of the controller.

[0015] The temperature probe is configured to detect the temperature in the enamel liner and transmit the temperature to the controller.

[0016] The water flow sensor is arranged in the water inlet and / or the water outlet of the enamel liner, detects whether there is water flow in the enamel liner and transmits the detected data to the controller.

[0017] In a fourth aspect, the present application further provides a computer storage medium storing computer executable instructions for executing the service life management method of the enamel liner according to any one of the above aspects.

[0018] Compared with the prior art, the technical scheme provided by the embodiments of the present application has the following advantages: the method provided by the embodiments of the present application obtains the water inlet temperature of the electric water heater, the storage water temperature when water is used, and the upper limit of the residual water temperature of the enamel inner container when water use is stopped, respectively compares the water inlet temperature, the storage water temperature, and the upper limit of the residual water temperature with corresponding preset threshold values, respectively presets preset permission opening conditions for the water inlet temperature, the storage water temperature, and the upper limit of the residual water temperature, and determines whether the water inlet temperature, the storage water temperature, and the upper limit of the residual water temperature open the high-temperature water storage permission of the electric water heater through the preset permission opening conditions. Therefore, after obtaining the water inlet temperature, the storage water temperature, and the upper limit of the residual water temperature of the electric water heater, the respective target data that meet the preset permission opening conditions are taken as reference data, and then it is determined whether to open the high-temperature water storage permission of the electric water heater according to the number of reference data. The comparison of the water inlet temperature of the electric water heater with the corresponding preset threshold value can determine whether the temperature of the external environment is low. If the temperature of the external environment is low, the amount and temperature of hot water may increase accordingly. Therefore, it is determined whether to open the high-temperature water storage permission of the electric water heater through the water inlet temperature. The storage water temperature of the electric water heater can determine the temperature demand of the user when water is used. If the storage water temperature when water is used is higher than the corresponding preset threshold value, it indicates that the user has a higher water temperature demand. Therefore, it is determined whether to open the high-temperature water storage permission of the electric water heater through the storage water temperature. The upper limit of the residual water temperature of the electric water heater when the user stops using water can determine the amount of residual hot water in the electric water heater when the user stops using water. If the upper limit of the residual water temperature is lower than the preset threshold value, it indicates that the amount of residual hot water in the electric water heater is small, and the amount of hot water in the electric water heater may not meet the water demand of the user. Therefore, it is determined whether to open the high-temperature water storage permission of the electric water heater through the upper limit of the residual water temperature of the electric water heater when the user stops using water. The number of the water inlet temperature, the storage water temperature, and the upper limit of the residual water temperature that meet the preset permission opening conditions indicates the degree of high-temperature water demand of the user when water is used. Therefore, the opening and closing of the high-temperature water storage permission of the electric water heater is controlled according to the degree of high-temperature water demand of the user, the opening of the high-temperature water storage permission of the electric water heater is set with a condition limit, and the high-temperature water storage permission is opened only when the condition is met. Therefore, the electric water heater is prevented from being in a high-temperature water storage state for a long time, and the wear of the enamel inner container is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] One or more embodiments are illustrated by the pictures in the drawings corresponding thereto, which do not constitute a limitation on the embodiments, and elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, and the drawings in the drawings do not constitute a proportional limitation.

[0022] Figure 1 A flowchart of a service life management method of an enamel liner provided by an embodiment of the present application;

[0023] Figure 2 A flowchart of a service life management method of an enamel liner provided by an embodiment of the present application;

[0024] Figure 3 A flowchart of a service life management method of an enamel liner provided by an embodiment of the present application;

[0025] Figure 4 A flowchart of a service life management method of an enamel liner provided by an embodiment of the present application;

[0026] Figure 5 A data flow diagram of a control system of an electric water heater provided by an embodiment of the present application;

[0027] Figure 6 A structural diagram of an electric water heater provided by an embodiment of the present application.

[0028] Explanation of reference numerals:

[0029] Housing 101, thermal insulation layer 102, enamel liner 103, water inlet 1031, water outlet 1032, controller 104, heating device 105, temperature probe, water flow sensor. DETAILED DESCRIPTION

[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0031] The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. For the purpose of simplifying the present disclosure, certain examples of components and arrangements are described. These are, of course, merely examples and are in no way intended to limit the application. Moreover, the application can be practiced with different examples than those described. Additionally, the present application can be repeated with different examples in different instances. Such repetition is expressly intended to be within the scope of the present application.

[0032] In order to solve the problem of saving hot water supply in the prior art by increasing the rated temperature of the electric water heater, thereby causing the wear rate of the enamel liner to be intensified, the present application provides a life management method for an enamel liner, which can reduce the wear of the enamel liner of the electric water heater.

[0033] Figure 1 A flowchart of a life management method for an enamel liner provided by an embodiment of the present application is shown in FIG. 1. As shown in FIG. 1, the method comprises the following steps. Figure 1

[0034] S101, obtaining a target data set of the electric water heater, the target data in the target data set at least including an inlet water temperature when the electric water heater is in water, a storage water temperature of the enamel liner when the electric water heater is in use, and an upper limit of residual water temperature of the hot water remaining in the enamel liner when the electric water heater stops being in use.

[0035] In the embodiment of the present application, the data of the electric water heater is monitored in real time during the use of the electric water heater, and the inlet water temperature when the electric water heater is in water, the storage water temperature of the enamel liner when the electric water heater is in use, and the upper limit of residual water temperature of the hot water remaining in the enamel liner when the electric water heater stops being in use are obtained to determine whether the hot water in the current electric water heater meets the actual use demand of the user.

[0036] The inlet water temperature of the electric water heater can represent the temperature of the current external environment, because in a lower temperature environment, the body temperature of the human body will decrease and the human body will feel cold, and higher temperature hot water is needed when the user is in water. The inlet water of the electric water heater is consistent with the temperature of the external environment, so that the temperature of the external environment can be understood by obtaining the inlet water temperature when the electric water heater is in water, so as to determine whether the heating temperature of the electric water heater needs to be increased according to the inlet water temperature.

[0037] The storage water temperature of the electric water heater can understand the temperature demand of the user when the user is in water. The user can set the heating temperature range of the electric water heater according to the demand when using the electric water heater. When the user needs higher temperature hot water before being in water, the water in the heater is heated sufficiently, so that the storage water temperature in the electric water heater is close to the highest value of the heating temperature range when the user is in water, indicating that the user may have a tendency to use higher temperature hot water.

[0038] ​The upper limit of the residual temperature of the remaining hot water in the porcelain liner when the electric water heater stops water use can represent the amount of remaining hot water in the porcelain liner. During the process of water use by the user, the maximum temperature of the porcelain liner can be affected by the amount of remaining hot water. If the amount of remaining hot water is relatively large, the maximum temperature of the porcelain liner can be relatively high; otherwise, if the amount of remaining hot water is relatively small, the maximum temperature of the porcelain liner can be relatively low. Therefore, the amount of remaining hot water in the porcelain liner when the water use is stopped can be determined according to the upper limit of the residual temperature of the remaining hot water in the porcelain liner, so as to determine whether the hot water at the corresponding temperature can meet the demand of the user.

[0039] In an implementable manner, the manner of the target data set can be to continue to be acquired according to the current water use state of the electric water heater, for example, as shown in Figure 2 the upper limit of the residual temperature of the remaining hot water in the porcelain liner when the electric water heater stops water use can represent the amount of remaining hot water in the porcelain liner. During the process of water use by the user, the maximum temperature of the porcelain liner can be affected by the amount of remaining hot water. If the amount of remaining hot water is relatively large, the maximum temperature of the porcelain liner can be relatively high; otherwise, if the amount of remaining hot water is relatively small, the maximum temperature of the porcelain liner can be relatively low. Therefore, the amount of remaining hot water in the porcelain liner when the water use is stopped can be determined according to the upper limit of the residual temperature of the remaining hot water in the porcelain liner, so as to determine whether the hot water at the corresponding temperature can meet the demand of the user.

[0040] In the embodiments of the present application, a water flow sensor or other sensor device capable of detecting whether there is water flow can be installed in the water inlet and / or water outlet of the porcelain liner. The water use state of the electric water heater is determined by the sensor device installed in the water inlet or water outlet. When the signal output by the water flow sensor in the water inlet changes, it indicates that the current electric water heater is in the water inlet state. At this time, the temperature in the electric water heater can be detected. The temperature in the porcelain liner at the current time is affected by the water inlet temperature, so the minimum temperature in the porcelain liner can represent the current water inlet temperature. When the water flow sensor in the water outlet detects that the current electric water heater is in the water use state, the current temperature in the electric water heater at this time is taken as the water storage temperature. When the water flow sensor in the water outlet and / or the water flow sensor in the water inlet detects that the current electric water heater stops water use, the temperature in the porcelain liner is detected, and the maximum temperature in the porcelain liner is taken as the upper limit of the residual temperature of the remaining hot water. The amount of remaining hot water in the current porcelain liner is determined according to the upper limit of the residual temperature.

[0041] The judgment of whether the electric water heater is in the state of using water can also be made according to the data detected by the water flow sensor in the water inlet. When the water flow sensor in the water inlet detects that the electric water heater starts to fill water, the electric water heater can be in the state of using water before that, and the target data of the electric water heater is collected in real time, so the water storage temperature before the water is detected can be taken as the water storage temperature of the enamel liner, and whether the amount of hot water in the enamel liner is gradually decreasing can be judged according to the change of the temperature, and it can also be judged that it is in the state of using water. The judgment of whether it is in the state of using water can also be made by installing a pressure sensor, a water level sensor and the like in the enamel liner to detect the water level in the enamel liner.

[0042] The method for obtaining the water use state of the electric water heater includes but is not limited to installing a water flow sensor in the water inlet and / or the water outlet of the enamel liner. The water flow sensor detects whether there is water flow in the water inlet and / or the water outlet. When water flows through the water flow sensor, the output signal of the water flow sensor will change. When the signal of the water flow sensor changes, the controller can know that the current electric water heater is in the state of filling water, draining water and the like, so as to judge the water use state of the electric water heater. The water use state of the electric water heater can also be judged by installing a valve at the water inlet and / or the water outlet according to the opening and closing state of the valve.

[0043] The water storage temperature and the upper limit of the residual temperature of the remaining hot water in the enamel liner can be detected by installing a temperature probe in the enamel liner. The temperature value in the enamel liner is detected by the temperature probe, and at least one temperature probe is installed in the enamel liner. When multiple temperature probes are installed, the water storage temperature can be the average of the temperature values detected by the multiple temperature probes, and the upper limit of the residual temperature of the remaining hot water can be the highest value after detection by the multiple temperature probes as the upper limit of the residual temperature when stopping using water.

[0044] S102, compare each target data in the target data set with the corresponding preset threshold value, and take the target data meeting the preset permission opening condition of each target data as reference data.

[0045] In the embodiments of the present application, the preset threshold value of each target data is set in advance. According to the comparison of the target data and the corresponding preset threshold value, it can be determined whether the hot water temperature and the hot water amount in the current electric water heater can meet the actual water use demand of the user. After obtaining the target data set, each target data in the target data set is compared with the corresponding preset threshold value, and it is judged whether the target data meets the preset permission opening condition. The target data meeting the preset permission opening condition is taken as reference data, so as to judge whether to open the high-temperature water storage permission of the electric water heater according to the reference data.

[0046] The preset permission opening condition is that the target data is compared with the corresponding preset threshold value, and the comparison result is to open the high-temperature permission

[0047] The comparison of the inlet water temperature and the corresponding preset threshold value can determine whether the current environmental temperature is low. When the inlet water temperature is less than or equal to the preset threshold value, it indicates that the current external environment is in a low-temperature state, and higher-temperature hot water is needed to meet the user's use demand. For example, when the preset threshold value corresponding to the inlet water temperature is 15℃, it is detected that the inlet water temperature is lower than 15℃, which indicates that the current may be in autumn, winter or early spring, and the user's body temperature is low. When using hot water, higher-temperature hot water is needed. Therefore, the inlet water temperature less than or equal to the corresponding preset threshold value is used as reference data to determine whether to open the high-temperature water storage permission of the electric water heater.

[0048] The comparison of the storage water temperature and the corresponding preset threshold value can determine whether the current user has a higher storage water temperature demand. When the storage water temperature is greater than or equal to the preset threshold value, it indicates that the user needs to use high-temperature hot water. For example, under normal circumstances, the heating temperature range of the electric water heater is 35℃-75℃. When the user uses water, the storage water temperature of the electric water heater reaches 72℃ or above, and the user uses high-temperature hot water. At this time, it may be because the user needs to use high-temperature hot water, or the user's demand for hot water is large. Therefore, when the storage water temperature is greater than or equal to the corresponding preset threshold value, the storage water temperature is used as reference data to determine whether to open the high-temperature water storage permission of the electric water heater.

[0049] When the water use is stopped, the comparison of the upper limit of the remaining temperature of the remaining hot water in the enamel liner and the corresponding threshold value can determine whether the hot water volume can meet the user's use demand. When the upper limit of the remaining temperature is less than or equal to the corresponding preset threshold value, it indicates that the remaining amount of hot water in the enamel liner after the user uses water is small, which may not meet the user's use demand. For example, when the preset threshold value corresponding to the upper limit of the remaining temperature is 40℃, and the upper limit of the remaining temperature is less than or equal to 40℃, it indicates that the water temperature in the enamel liner is low, and the hot water storage volume is insufficient to discharge more hot water. The upper limit of the remaining temperature in the enamel liner may be the residual heat of the hot water, or the heat emitted by the remaining hot water. Therefore, when the upper limit of the remaining temperature is less than or equal to the corresponding preset threshold value, the corresponding upper limit of the remaining temperature is used as reference data to determine whether to open the high-temperature water storage permission of the electric water heater.

[0050] S103, determining whether to open the high-temperature water storage permission of the electric water heater based on the number of reference data.

[0051] In the embodiment of the present application, the target data in the target data set that meets the preset permission opening condition is taken as reference data. If the quantity of the reference data is relatively large, it indicates that the user has a higher temperature demand for water use, and thus whether to open the high-temperature water storage permission of the electric water heater is determined according to the quantity of the reference data, so as to ensure that the high-temperature water storage permission of the electric water heater is determined according to the actual water use demand of the user.

[0052] It can be understood that the actual water use demand of the user is counted before the high-temperature water storage permission of the electric water heater is ensured to be opened, and when the water inlet temperature, the water storage temperature and the residual temperature upper limit of the remaining hot water when the user stops using water of the electric water heater are less than or equal to the corresponding preset threshold value.

[0053] The high-temperature water storage permission can be to open a higher temperature water storage permission compared with the current water storage temperature of the electric water heater, and under the high-temperature water storage permission, the water temperature heated by the electric water heater is higher. For example, when the current water storage temperature of the electric water heater is 35-75℃, the high-temperature water storage permission can be to adjust the water storage temperature of the electric water heater to 35-85℃. The way to heat the water in the enamel liner to a higher temperature can be to increase the heating time of the heating device in the enamel liner, or to set multiple heating devices in the enamel liner, and when the high-temperature permission is opened, the multiple heating devices are opened to work at the same time, and when the high-temperature permission is not opened, only one heating device works to heat the water in the enamel liner.

[0054] The quantity threshold value of the reference data that can open the high-temperature water storage permission can be preset, and when the quantity of the reference data reaches the preset quantity threshold value, the high-temperature water storage permission of the electric water heater is opened. In the embodiment of the present application, the size of the preset quantity threshold value can be any integer. For example, the preset quantity threshold value is 3, and when there are 3 or more target data in the target data set that meet the preset permission opening condition, it is determined that the current user has a higher temperature demand for water temperature, and thus the high-temperature water storage permission of the electric water heater is opened.

[0055] It can be conceived that when the target data collected by the user during the use of the electric water heater continuously meets the preset permission opening condition, that is, the water inlet temperature is less than or equal to the corresponding preset threshold value, and / or the water storage temperature is greater than or equal to the corresponding preset threshold value, and / or the residual temperature upper limit of the remaining hot water when the user stops using water is less than or equal to the corresponding preset threshold value, it indicates that the temperature of the hot water currently used by the user cannot meet the use demand of the user, and higher temperature hot water can be needed. When the target data intermittently meets the preset permission opening condition, it cannot represent the water use habit of the user, and thus whether the target data continuously or intermittently meets the preset permission opening condition within a preset time period can be limited during the comparison between the target data and the corresponding preset threshold value, and if the water use of the user has a high-temperature tendency for multiple times within a period of time, the high-temperature water storage permission of the electric water heater is opened.

[0056] For example, the preset time period is 10 days, the preset quantity threshold is 5, the target data of the electric water heater is collected in real time, and is compared with the corresponding preset threshold. If there are 5 or more water inlet temperatures less than or equal to the corresponding preset threshold within 15 days, and / or 5 or more water storage temperatures greater than or equal to the corresponding preset threshold within 15 days, and / or 5 or more upper limits of residual temperature less than or equal to the corresponding preset threshold within 15 days, it indicates that the current user's hot water temperature or hot water volume of the current electric water heater does not meet the current actual needs of the user. At this time, the high-temperature water storage permission of the electric water heater can be started. It is not limited whether the target data that meets the preset permission starting condition appears continuously or intermittently within 15 days.

[0057] In the embodiments of the present application, the inlet water temperature of the electric water heater, the storage water temperature and the upper limit of the residual water temperature of the remaining hot water in the enamel liner when the water use is stopped are obtained, and the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature are compared with the corresponding preset threshold values respectively, and the preset permission opening conditions for the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature are preset respectively. Whether the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature of the remaining hot water open the high-temperature storage water permission of the electric water heater is determined by the preset permission opening conditions. Therefore, after obtaining the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature of the electric water heater, they are compared with the corresponding preset threshold values respectively, and the target data meeting the preset permission opening conditions are taken as reference data, and then whether to open the high-temperature storage water permission of the electric water heater is determined according to the number of reference data. By comparing the inlet water temperature of the electric water heater with the corresponding preset threshold value, it can be determined whether the temperature of the external environment is low. If the temperature of the external environment is low, the amount and temperature of hot water may increase accordingly. Therefore, whether to open the high-temperature storage water permission of the electric water heater is determined by the inlet water temperature. The temperature demand of the user when using water can be determined by the storage water temperature of the electric water heater. If the storage water temperature when the user uses water is higher than the corresponding preset threshold value, it indicates that the user has a higher water temperature demand. Therefore, whether to open the high-temperature storage water permission of the electric water heater is determined by the storage water temperature. The amount of remaining hot water in the electric water heater when the user stops using water is determined by the upper limit of the residual water temperature of the remaining hot water in the electric water heater. If the upper limit of the residual water temperature is lower than the preset threshold value, it indicates that the amount of remaining hot water in the electric water heater is small, and the amount of hot water in the electric water heater may not meet the water demand of the user. Therefore, whether to open the high-temperature storage water permission of the electric water heater is determined by the upper limit of the residual water temperature of the remaining hot water in the electric water heater when the user stops using water. The number of inlet water temperature, storage water temperature and upper limit of residual water temperature meeting the preset permission opening conditions indicates the degree of high-temperature water demand of the user when using water. Therefore, the opening and closing of the high-temperature storage water permission of the electric water heater is controlled according to the degree of high-temperature water demand of the user. The opening of the high-temperature storage water permission of the electric water heater is conditionally limited. Only when the conditions are met, the high-temperature storage water permission is opened. Therefore, the electric water heater is prevented from being in the high-temperature storage water state for a long time, and the wear of the enamel liner is reduced.

[0058] As shown in Figure 2 The present application provides a flowchart of a life management method of an enamel liner. As shown in Figure 2 The method at least includes the following steps:

[0059] S201, obtaining a target data set of an electric water heater, and the target data in the target data set at least includes an inlet water temperature when the electric water heater is filled with water, a storage water temperature of an enamel liner when the electric water heater is used, and an upper limit of a residual water temperature of remaining hot water in the enamel liner when the electric water heater stops being used.

[0060] The specific implementation of this step can refer to step S101, which will not be described here

[0061] S2021, compare the water inlet temperature with the preset water inlet temperature threshold, and the preset permission opening condition corresponding to the water inlet temperature is that the water inlet temperature is less than or equal to the preset water inlet temperature threshold, and when the water inlet temperature is less than or equal to the preset water inlet temperature threshold, the corresponding water inlet temperature is determined as the first reference data.

[0062] In the embodiment of the application, after the water inlet temperature of the electric water heater is obtained, the water inlet temperature is compared with the preset water inlet temperature threshold, and when the water inlet temperature is low, it indicates that the temperature of the current external environment is low, and the user feels low temperature when using water, so higher temperature hot water is needed. Therefore, the preset permission opening condition for the water inlet temperature is that the water inlet temperature is less than or equal to the preset water inlet temperature threshold. When the water inlet temperature is less than or equal to the preset water inlet temperature threshold, the corresponding water inlet temperature is determined as the first reference data.

[0063] The first reference data is reference data for determining whether to open the high-temperature water storage permission of the electric water heater.

[0064] The preset permission opening condition is that when the target data meets the preset permission opening condition, the high-temperature water storage permission of the electric water heater is opened.

[0065] The determination of the water inlet temperature can be to detect the temperature in the enamel liner in real time during the water inlet process, and the lowest temperature in the detected temperature value is taken as the water inlet temperature. It can be understood that the temperature in the enamel liner is detected by a temperature probe installed in the enamel liner. For the detection of the water inlet temperature, a temperature detection device can also be installed directly at the water inlet to detect the temperature of the water flowing into the enamel liner from the water inlet, thereby realizing the acquisition of the water inlet temperature of the electric water heater.

[0066] For example, the preset water inlet temperature threshold is 15℃, the first obtained water inlet temperature is 12℃, the second obtained water inlet temperature is 13℃, and the third obtained water inlet temperature is 12℃, and the obtained water inlet temperature is taken as the first reference data.

[0067] S2022, compare the water inlet temperature with the preset water inlet temperature threshold, and the preset permission opening condition corresponding to the water inlet temperature is that the water inlet temperature is less than or equal to the preset water inlet temperature threshold, and when the water inlet temperature is less than or equal to the preset water inlet temperature threshold, the corresponding water inlet temperature is determined as the first reference data.

[0068] In the embodiment of the present application, after the storage water temperature of the electric water heater is acquired, the storage water temperature is compared with the corresponding preset storage water temperature threshold value. When the storage water temperature of the electric water heater is high during the user's water use process, it indicates that the user needs high-temperature hot water or has a high demand for the amount of hot water during the current water use process. Therefore, the preset permission opening condition for the storage water temperature is that the storage water temperature is greater than or equal to the preset storage water temperature threshold value, and the corresponding storage water temperature is taken as the second reference data.

[0069] The second reference data is reference data for determining whether to open the high-temperature storage water permission of the electric water heater.

[0070] S2023, compare the upper limit of the residual hot water temperature with the preset hot water temperature threshold value. The preset permission opening condition corresponding to the upper limit of the residual hot water temperature is that the upper limit of the residual hot water temperature is less than or equal to the preset hot water temperature threshold value. When the upper limit of the residual hot water temperature is less than or equal to the preset hot water temperature threshold value, the corresponding upper limit of the residual hot water temperature is determined as the third reference data.

[0071] In the embodiment of the present application, when the electric water heater stops water use, after the upper limit of the residual hot water temperature is acquired, the upper limit of the residual hot water temperature is compared with the corresponding preset hot water temperature threshold value. When the residual hot water in the enamel inner liner is small, the detected temperature is relatively low, which may be the residual temperature after the hot water is used up and remains in the enamel inner liner. Therefore, the residual hot water amount in the enamel inner liner can be determined by the upper limit of the residual hot water temperature when the water use is stopped, and whether the current temperature hot water can meet the user's water use demand is determined according to the residual hot water amount. Therefore, the preset permission opening condition for the upper limit of the residual hot water temperature is that the upper limit of the residual hot water temperature is less than or equal to the preset hot water temperature threshold value, and the corresponding upper limit of the residual hot water temperature is determined as the third reference data.

[0072] Whether to open the high-temperature storage water permission of the electric water heater is determined by the third reference data.

[0073] S203, acquire the quantity of the first reference data and / or the second reference data and / or the third reference data, and determine the actual water use demand of the user based on the quantity.

[0074] In the embodiment of the present application, the degree of demand for higher-temperature hot water of the current user during the use of hot water is determined by the quantity of the first reference data and / or the second reference data and / or the third reference data. When the quantity of the first reference data and / or the second reference data and / or the third reference data is more, it indicates that the degree of demand for higher-temperature hot water of the current user during the use of the electric water heater is higher.

[0075] The more the first reference data is, the more it indicates that the current external environment is in a low-temperature environment for a long time, and in the low-temperature environment, the body temperature of the human body will decrease, and therefore, hot water with a higher temperature is needed. The more the second reference data is, the more it indicates that the current user will wait for the electric water heater to heat the water in the enamel liner to a higher temperature before using it in the process of using the electric water heater. The current user may need to use hot water with a higher temperature, or the user may need more hot water in the process of using, and there may be a tendency to heat the water in the enamel liner to a higher temperature. The more the third reference data is, the lower the temperature in the enamel liner after the current user uses the electric water heater. This situation may be that the amount of remaining hot water in the enamel liner is small, indicating that the user may use water with a lower temperature or gradually decrease in the process of using, and therefore, hot water with a higher temperature is needed for the user to use.

[0076] It can be understood that the capacity of the electric water heater is fixed, and therefore, when the hot water of the electric water heater cannot meet the use demand of the user, the use demand of the user can be met by increasing the temperature.

[0077] In S204, it is determined whether to start the high-temperature water storage permission of the electric water heater based on the actual water use demand.

[0078] In the embodiments of the present application, the actual water use demand of the user is determined in combination with the first reference data, the second reference data, and the third reference data in the process of use of the user, and the high-temperature water storage permission of the electric water heater is started only when the user needs hot water with a higher temperature, so as to avoid the electric water heater being in a high-temperature water storage state for a long time and avoid the enamel liner being in a high-temperature environment for a long time to reduce the loss rate of the enamel liner.

[0079] It can be understood that in the process of use of the user, if the electric water heater is started and not turned off, the temperature of the stored hot water will be high, the temperature of the enamel liner will also be high, and the enamel liner will be continuously in a high-temperature environment, thereby increasing the loss of the enamel liner. Therefore, in the present application, the starting condition of the high-temperature water storage permission is set, and the high-temperature water storage permission is started only when the condition is met, so as to reduce the loss of the enamel liner.

[0080] The preset number threshold is set for the number of the first reference data, the second reference data, and the third reference data, and the high-temperature water storage permission of the electric water heater is started only when the number is greater than or equal to the preset number threshold, indicating that the user has a higher temperature demand. In addition, the reference data can be determined in a preset time period, and when there are multiple target data that meet the preset permission starting condition in the preset time period, it indicates that the user currently has a higher water temperature demand.

[0081] The judgment method for whether to open the high-temperature water storage permission of the electric water heater can be that the high-temperature water storage permission of the electric water heater is opened only when the first reference data, the second reference data and the third reference data simultaneously satisfy the preset quantity threshold value. For example, the preset time period is 5 days, and the preset quantity threshold value is 5. If there are 5 first reference data, 7 second reference data and 5 third reference data in 5 days, at this time, the first reference data, the second reference data and the third reference data all satisfy the preset quantity threshold value, and the high-temperature water storage permission of the electric water heater is opened. If there are 2 first reference data, 5 second reference data and 4 third reference data in 5 days, at this time, the first reference data and the second reference data do not satisfy the preset quantity threshold value, only the second reference data satisfies the preset quantity threshold value, and the high-temperature water storage permission of the electric water heater is not opened.

[0082] The judgment method for whether to open the high-temperature water storage permission of the electric water heater can also be that the high-temperature water storage permission of the electric water heater is opened when at least one of the first reference data, the second reference data and the third reference data satisfies the preset quantity threshold value. For example, the preset time period is 3 days, and the preset quantity threshold value is 3 times. When there are at least 3 first reference data and / or second reference data and / or third reference data in 3 days, the high-temperature water storage permission of the electric water heater is opened. If there are no first reference data, second reference data and third reference data in 3 days, or the number of the first reference data, the second reference data and the third reference data does not exceed 3, the high-temperature water storage permission of the electric water heater is not opened.

[0083] The demand degree of the user for high-temperature water can also be determined according to whether the target data collected in the water use times satisfies the preset permission opening condition. For example, 10 water use conditions of the user are monitored, and the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature of the 10 water uses are detected. Whether the actual water use demand of the user is determined according to whether the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature satisfy the preset permission opening condition.

[0084] It can be understood that for the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature, if they appear continuously for many times, the user needs high-temperature hot water or needs a large amount of hot water in the use process. Therefore, whether to open the high-temperature water storage permission of the electric water heater can be judged according to whether there are many continuous inlet water temperatures, storage water temperatures and upper limits of residual water temperatures that satisfy the preset permission opening condition in the preset time period. The more the number of the inlet water temperature, the storage water temperature and the upper limit of the residual water temperature that continuously satisfy the corresponding preset permission opening condition, the higher the demand degree of the user for opening the high-temperature water storage permission of the electric water heater.

[0085] S205, if the target data exists continuously for a preset number of times and does not satisfy the preset permission opening condition, the high-temperature water storage permission of the electric water heater is closed.

[0086] In the embodiments of the present application, after the high-temperature water storage permission of the user is opened, the target data of the electric water heater is collected in real time, and it is judged whether the preset permission opening condition is met. In the use process of the user, if the water inlet temperature or the water storage temperature or the upper limit of the residual temperature appears a continuous preset number of times to meet the preset permission opening condition, it indicates that the user no longer needs high-temperature hot water in the use process. In order to reduce the loss of the enamel liner of the electric water heater, the high-temperature water storage permission of the electric water heater can be closed.

[0087] For example, after the high-temperature permission of the user is opened, it is detected that the water inlet temperature or the water storage temperature or the upper limit of the residual temperature appears multiple consecutive times in a preset time period to not meet the preset high-temperature permission condition, and then the high-temperature water storage permission of the electric water heater is closed to protect the enamel liner of the electric water heater. If the water inlet temperature of the user in the water use process is greater than the preset temperature threshold, the temperature of the external environment is suitable, the body temperature of the human body is suitable at this time, and there is no need to use high-temperature water. If the water storage temperature is less than the preset temperature threshold, it indicates that the user can meet the use demand by using water lower than the preset water storage temperature threshold in the use process, and there is no need to heat the water to a higher temperature, and the high-temperature water storage permission is closed. The use demand of the user can be met. If the upper limit of the residual temperature of the residual hot water is greater than the preset hot water temperature threshold, it indicates that there is residual hot water in the enamel liner when the user finishes using, and the use demand of the user can be completely met, so the high-temperature water storage permission of the electric water heater can be closed.

[0088] In the embodiments of the present application, the water inlet temperature of the electric water heater when water is inlet, the water storage temperature when water is used, and the upper limit of the residual temperature of the residual hot water when water use is stopped are obtained, and the water inlet temperature is compared with the preset water inlet temperature threshold to determine whether the current external environment temperature is low to determine whether the high-temperature water storage permission of the electric water heater needs to be opened. The water storage temperature is compared with the preset water storage temperature threshold to determine whether the user needs high-temperature hot water or needs a large amount of hot water when using water to determine whether the high-temperature water storage permission of the electric water heater needs to be opened. The upper limit of the residual temperature of the residual hot water when water use is stopped is compared with the preset hot water temperature threshold to determine the amount of hot water in the enamel liner after the user finishes using, and whether the use demand of the user can be met is judged to determine whether the high-temperature water storage permission of the electric water heater needs to be opened. The water inlet temperature, the water storage temperature, and the upper limit of the residual temperature that meet the preset permission opening condition are determined as reference data, the actual water use demand of the user is determined in combination with the number of reference data, and whether the high-temperature water storage permission of the electric water heater needs to be opened is determined according to the actual water use demand of the user. The opening of the high-temperature water storage permission of the electric water heater is limited by conditions, and the high-temperature water storage permission is opened only when the conditions are met. Therefore, the electric water heater is avoided from being in a high-temperature water storage state for a long time, and the loss of the enamel liner is reduced.

[0089] For example, as shown in FIG. 1, the electric water heater includes a water inlet temperature sensor 1, a water storage temperature sensor 2, a residual temperature sensor 3, a water inlet temperature threshold setting module 4, a water storage temperature threshold setting module 5, a residual temperature threshold setting module 6, a high-temperature water storage permission opening module 7, a high-temperature water storage permission closing module 8, and a high-temperature water storage permission setting module 9. Figure 4As shown, the embodiment of the present application provides a service life management device for a enamel liner. As shown in Figure 4 The device comprises:

[0090] a data acquisition module configured to acquire a target data set of the electric water heater, wherein the target data in the target data set at least includes an inlet water temperature when the electric water heater is in water inlet, a storage water temperature of the enamel liner when the electric water heater is in water use, and an upper limit of residual water temperature of the residual hot water in the enamel liner when the electric water heater is in water stop;

[0091] a data determination module configured to compare each target data in the target data set with a corresponding preset threshold, and to determine target data satisfying a preset permission opening condition corresponding to each target data as reference data;

[0092] a permission opening module configured to determine whether to open a high-temperature water storage permission of the electric water heater based on a quantity of the reference data.

[0093] Further, the data acquisition module comprises:

[0094] a water use state acquisition unit configured to acquire a water use state of the electric water heater;

[0095] an inlet water temperature acquisition unit configured to acquire a lowest temperature in the enamel liner when the water use state is in water inlet, and to determine the lowest temperature as the inlet water temperature;

[0096] a storage water temperature acquisition unit configured to acquire a current temperature in the enamel liner when the water use state is in water use, and to determine the current temperature as the storage water temperature;

[0097] an upper limit of residual water temperature acquisition unit configured to acquire a highest temperature in the enamel liner when the water use state is in water stop, and to determine the highest temperature as the upper limit of the residual water temperature.

[0098] Further, the data determination module comprises:

[0099] a first data determination unit configured to compare the inlet water temperature with a preset inlet water temperature threshold, wherein a preset permission opening condition corresponding to the inlet water temperature is that the inlet water temperature is less than or equal to the preset inlet water temperature threshold, and when the inlet water temperature is less than or equal to the preset inlet water temperature threshold, the corresponding inlet water temperature is determined as first reference data;

[0100] a second data determination unit configured to compare the storage water temperature with a preset storage water temperature threshold, wherein a preset permission opening condition corresponding to the storage water temperature is that the storage water temperature is greater than or equal to the preset storage water temperature threshold, and when the storage water temperature is greater than or equal to the preset storage water temperature threshold, the corresponding initial temperature is determined as second reference data;

[0101] a third data determining unit configured to compare the upper limit of the residual hot water temperature with a preset hot water temperature threshold value, and determine the third reference data as the upper limit of the residual hot water temperature when the upper limit of the residual hot water temperature is less than or equal to the preset hot water temperature threshold value, wherein the preset permission opening condition corresponding to the upper limit of the residual hot water temperature is that the upper limit of the residual hot water temperature is less than or equal to the preset hot water temperature threshold value.

[0102] Further, the permission opening module comprises:

[0103] a demand determining unit configured to obtain the number of the first reference data, the second reference data and / or the third reference data, and determine the actual water demand of the user based on the number;

[0104] a permission opening unit configured to determine whether to open the high-temperature water storage permission of the electric water heater based on the actual water demand.

[0105] Further, the service life management device of the electric heater enamel liner further comprises:

[0106] a permission closing module configured to close the high-temperature water storage permission of the electric water heater if the target data continuously fail to meet the preset permission opening condition for a preset number of times.

[0107] Further, the water storage temperature determining unit is configured to obtain temperature values collected by each temperature probe in the enamel liner when the water use state is water use in progress, and calculate an average temperature value based on the temperature values, and determine the average temperature value as the water storage temperature.

[0108] In the embodiment of the present application, the water flow sensor is used to determine the water use state of the electric water heater, and then the water inlet temperature when water is filled, the storage water temperature when water is used and the upper limit of the residual water temperature when water use is stopped are obtained according to the water use state, and the current external environment temperature is determined by comparing the water inlet temperature with the preset water inlet temperature threshold value, so as to determine whether the high-temperature storage water permission of the electric water heater needs to be started, the storage water temperature is compared with the preset storage water temperature threshold value, so as to determine whether the user needs high-temperature water or needs a large amount of water when using water, so as to determine whether the high-temperature storage water permission of the electric water heater needs to be started, and the upper limit of the residual water temperature when water use is stopped is compared with the preset water temperature threshold value, so as to determine the residual amount of water in the enamel inner container after the user uses it, and whether the water use demand of the user can be met is determined, so as to determine whether the high-temperature storage water permission of the electric water heater needs to be started, and then the water inlet temperature, the storage water temperature and the upper limit of the residual water temperature that meet the preset permission starting condition are determined as reference data, and the actual water use demand of the user is determined in combination with the number of reference data, and then whether the high-temperature storage water permission of the electric water heater needs to be started is determined according to the actual water use demand of the user, and the starting of the high-temperature storage water permission of the electric water heater is set with a condition limit, and the high-temperature storage water permission is started only when the condition is met, so as to avoid that the electric water heater is in the high-temperature storage water state for a long time, and the loss of the enamel inner container is reduced.

[0109] As shown in Figure 6 , the present application provides an electric water heater, which can execute the above-mentioned service life management method of the enamel inner container when working. As shown in Figure 6 , the electric water heater comprises, from outside to inside, a shell 101, a heat preservation layer 102 and an enamel inner container 103, a water inlet 1031 and a water outlet 1032 are arranged on the enamel inner container 103, a water flow sensor is arranged in the water inlet 1031 and / or the water outlet 1032, a heating device 105 and at least one temperature probe are arranged in the enamel inner container 103, and a controller 104 is arranged on the electric water heater, the controller 104 is electrically connected with the heating device 105, the temperature probe and the water flow sensor, and as shown in Figure 5 , it is a schematic diagram of data transmission direction between the controller 104 and the heating device 105, the temperature probe and the water flow sensor;

[0110] The controller 104 is used for receiving data detected by the temperature probe and the water flow sensor, and controlling the working state of the heating device 105 according to the received data;

[0111] The heating device 105 is used for heating water in the enamel inner container 103 according to the control of the controller 104;

[0112] The temperature probe is used for detecting the temperature in the enamel inner container 103 and transmitting the temperature to the controller 104;

[0113] The water flow sensor is installed at the water inlet 1031 and / or the water outlet 1032 of the enamel liner 103, detects whether there is water flow in the enamel liner 103, and transmits the detected data to the controller 104.

[0114] In the embodiment of the present application, the water flow state of the electric water heater is detected by the water flow sensor installed at the water inlet 1031 and / or the water outlet 1032, the water flow sensor is electrically connected with the controller 104 to transmit the detected water flow data to the controller 104 in real time, when the water flow sensor detects water flow, the output signal will change, thereby determining the water flow state of the electric water heater, and the temperature probe installed in the enamel liner 103 detects the temperature in the enamel liner 103 in real time and transmits the detected temperature to the controller 104, and the temperature in the enamel liner 103 is obtained by combining the water flow data detected by the water flow sensor, so as to determine the water inlet temperature, the water storage temperature and the upper limit of the residual hot water temperature of the electric water heater, thereby determining whether to open the high-temperature water storage permission of the electric water heater, when it is determined to open the high-temperature water storage permission of the electric water heater, the heating device 105 is controlled to heat the hot water in the enamel liner 103 according to the control instruction corresponding to the high-temperature water storage permission, so as to meet the actual water demand of the user.

[0115] The embodiment of the present application also provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the service life management method of the enamel liner provided by any one of the preceding method embodiments.

[0116] The device embodiments described above are only schematic, wherein the units shown as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment.

[0117] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software plus a general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions or the part that contributes to the related art can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0118] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0119] The above description is merely that of the specific embodiments of the application and as such is not to be taken in a limiting sense. Various modifications and alterations of the embodiments described herein will become apparent to those skilled in the art from the foregoing description, which does not limit the generality presented. It is the intention that all such modifications and alterations be considered equaliy by the spirit and scope of this application. It is therefore intended to cover in the appended claims all such changes and alterations that come within the scope of this application.

Claims

1. A method for managing the lifespan of an enamel liner, characterized in that, For use in an electric water heater, the method includes: Obtain the target dataset of the electric water heater, wherein the target data in the target dataset includes at least the inlet water temperature when the electric water heater is filled with water, the water storage temperature of the enamel inner tank when the electric water heater is in use, and the upper limit of the residual temperature of the remaining hot water in the enamel inner tank when the electric water heater is not in use. Each target data in the target dataset is compared with its corresponding preset threshold, and the target data that meets the preset permission opening conditions corresponding to each target data is used as reference data. Based on the amount of the reference data, determine whether to enable the high-temperature water storage permission of the electric water heater.

2. The method according to claim 1, characterized in that, The acquisition of the target dataset for electric water heaters includes: Get the water usage status of the electric water heater; When the water usage state is in the process of water intake, the lowest temperature inside the enamel liner is obtained and the lowest temperature is determined as the water intake temperature. When the water usage status is "currently in use", the current temperature inside the enamel inner tank is obtained, and the current temperature is determined as the water storage temperature. When the water usage status is "stopped", the highest temperature inside the enamel inner tank is obtained, and the highest temperature is determined as the upper limit of the residual temperature of the remaining hot water.

3. The method according to claim 1, characterized in that, The step of comparing each target data in the target dataset with its corresponding preset threshold, and using the target data that meets the preset permission enabling conditions for each target data as reference data, includes: The inlet water temperature is compared with a preset inlet water temperature threshold. The preset permission opening condition corresponding to the inlet water temperature is that the inlet water temperature is less than or equal to the preset inlet water temperature threshold. When the inlet water temperature is less than or equal to the preset inlet water temperature threshold, the corresponding inlet water temperature is determined as the first reference data. The water storage temperature is compared with a preset water storage temperature threshold. The preset permission activation condition corresponding to the water storage temperature is that the water storage temperature is greater than or equal to the preset water storage temperature threshold. When the water storage temperature is greater than or equal to the preset water storage temperature threshold, the corresponding initial temperature is determined as the second reference data. The upper limit of the residual temperature of the remaining hot water is compared with the preset hot water temperature threshold. The preset permission activation condition corresponding to the upper limit of the residual temperature of the remaining hot water is when the upper limit of the residual temperature is less than or equal to the preset hot water temperature threshold. When the upper limit of the residual temperature is less than or equal to the preset hot water temperature threshold, the corresponding upper limit of the residual temperature is determined as the third reference data.

4. The method according to claim 3, characterized in that, The step of determining whether to activate the high-temperature water storage permission of the electric water heater based on the quantity of the reference data includes: Obtain the quantity of the first reference data and / or the second reference data and / or the third reference data, and determine the user's actual water demand based on the quantity; Whether to activate the high-temperature water storage function of the electric water heater is determined based on the actual water demand.

5. The method according to claim 4, characterized in that, After determining the heating strategy of the electric water heater based on the actual water demand, the following steps are also included: If the target data fails to meet the preset permission activation conditions for a preset number of consecutive preset times, the high-temperature water storage permission of the electric water heater will be disabled.

6. The method according to claim 2, characterized in that, At least one temperature probe is installed in the enamel-lined inner tank; when water is being used, the current temperature inside the enamel-lined inner tank is acquired, and the current temperature is determined as the water storage temperature, including: When the water is in use, the temperature values ​​collected by each temperature probe inside the enamel liner are obtained, and the average temperature value is calculated based on each temperature value. The average temperature value is then determined as the water storage temperature.

7. The method according to claim 2, characterized in that, At least one water flow sensor is installed in the enamel-lined inner tank, and the acquisition of the water usage status of the electric water heater includes: The water flow data monitored by the water flow sensor is acquired, and the water usage status of the electric water heater is determined based on the water flow data.

8. A life management device for an enamel liner, characterized in that, The device includes: The data acquisition module is used to acquire the target dataset of the electric water heater. The target data in the target dataset includes at least the inlet water temperature when water is introduced, the water storage temperature of the enamel inner tank when water is used, and the upper limit of the residual hot water temperature in the enamel inner tank when water is stopped. The data determination module is used to compare each target data in the target dataset with its corresponding preset threshold, and to use the target data that meets the preset permission opening conditions corresponding to each target data as reference data. The permission enabling module is used to determine whether to enable the high-temperature water storage permission of the electric water heater based on the amount of the reference data.

9. An electric water heater, characterized by: When the electric water heater is working, it can perform the life management method of the enamel inner tank according to any one of claims 1-7. The electric water heater includes an outer shell, an insulation layer and an enamel inner tank from the outside to the inside. An inlet and an outlet are provided on the enamel inner tank. A water flow sensor is installed in the inlet and / or outlet. A heating device and at least one temperature probe are installed in the enamel inner tank. A controller is installed on the electric water heater. The controller is electrically connected to the heating device, the temperature probe and the water flow sensor. The controller is used to receive data detected by the temperature probe and water flow sensor, and to control the working status of the heating device based on the received data; A heating device is used to heat the water inside the enamel-lined liner according to the control of the controller; Temperature probe is used to detect the temperature inside the enamel liner and transmit the temperature to the controller; A water flow sensor is installed at the inlet and / or outlet of the enamel liner to detect whether there is water flow inside the enamel liner and transmit the detected data to the controller.

10. A computer storage medium, characterized in that, The device stores computer-executable instructions for performing the life management method for the enamel liner according to any one of claims 1-7.

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