Electric water heater and control method thereof

Abstract

The embodiment of the invention belongs to the technical field of household appliances, and provides an electric water heater and a control method of the electric water heater. The inner container is used for storing water; the temperature detection device is arranged in the inner container and used for detecting the temperature of water in the inner container; the heating device is arranged in the inner container and used for heating water in the inner container; and the controller is arranged in the body. The method comprises the steps that in the running process of the electric water heater, the corresponding return difference temperature is determined according to the current running mode and environment parameters of the electric water heater; the water temperature, detected by a temperature detection device, in the inner container is obtained, and the difference value between the preset water temperature and the water temperature is determined; and when the difference value is larger than the return difference temperature, the heating device is controlled to heat the water in the inner container. In this way, the corresponding return difference temperature is determined according to the operation mode and the environment parameters of the electric water heater, so that the determined return difference temperature better meets the requirements of a user, and the user experience can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of household appliances, and more specifically, to an electric water heater and a control method for the electric water heater. Background Art

[0002] During use, the electric water heater will heat the water in the electric water heater according to the set temperature, so that the water in the electric water heater reaches the set temperature, and then the electric water heater enters the insulation state.

[0003] Currently, after heating the water to a set temperature, an electric water heater determines whether to heat the water again based on a preset hysteresis temperature. Specifically, the electric water heater determines the difference between the set temperature and the current water temperature, and heats the water when the difference is greater than or equal to the hysteresis temperature.

[0004] However, the fixed hysteresis temperature may be too large or too small, so that the hysteresis temperature does not meet the needs of users and affects the user experience. Summary of the Invention

[0005] The embodiments of the present application provide an electric water heater and a control method for the electric water heater. The hysteresis temperature can change with changes in the external environment, making the hysteresis temperature more targeted and improving the user experience.

[0006] In a first aspect, an embodiment of the present application provides an electric water heater, comprising:

[0007] ontology;

[0008] An inner tank, wherein the inner tank is used to store water;

[0009] a temperature detection device, disposed in the inner tank, for detecting the temperature of the water in the inner tank;

[0010] A heating device is provided in the inner tank and is used to heat the water in the inner tank;

[0011] The controller is disposed in the body and is configured to:

[0012] During the operation of the electric water heater, determining the corresponding hysteresis temperature according to the current operation mode and environmental parameters of the electric water heater;

[0013] Obtaining the water temperature in the inner tank detected by the temperature detection device, and determining the difference between the preset water temperature and the water temperature;

[0014] When the difference is greater than the return temperature, the heating device is controlled to heat the water in the inner tank.

[0015] In the present application, during the operation of the electric water heater, the corresponding hysteresis temperature can be determined according to the current operating mode and environmental parameters of the electric water heater, that is, the hysteresis temperature can change according to the changes in the operating mode and environmental parameters, so that when the water is subsequently heated by the hysteresis temperature control, the water temperature fluctuation in the inner tank of the electric water heater is more in line with the needs of different situations, thereby improving the user experience.

[0016] In some embodiments of the present application, the environmental parameters include season;

[0017] The controller is configured to:

[0018] During the operation of the electric water heater, a corresponding hysteresis temperature is determined according to the current operation mode and season of the electric water heater; wherein the hysteresis temperature is proportional to the overall temperature corresponding to the season.

[0019] In this application, different hysteresis temperatures are determined for different seasons, allowing for a higher hysteresis temperature in the summer and a lower hysteresis temperature in the winter. Since users have lower expectations for water temperature fluctuations in the summer than in the winter, by determining different hysteresis temperatures for different seasons, the water temperature differential of the electric water heater can be more closely aligned with user needs, thereby improving the user experience.

[0020] In some embodiments of the present application, the environmental parameters include a peak power consumption period or a peak-valley power consumption period;

[0021] The controller is configured to:

[0022] During the operation of the electric water heater, if the current time is in the peak power consumption period, the corresponding first return temperature difference is determined according to the current operation mode of the electric water heater and the peak power consumption period;

[0023] If the current moment is in the peak and valley time period of electricity consumption, a corresponding second hysteresis temperature is determined according to the current operation mode of the electric water heater and the peak and valley time period of electricity consumption, wherein the second hysteresis temperature is less than the first hysteresis temperature.

[0024] In the present application, the electric water heater can determine a larger hysteresis temperature during peak power consumption periods. When the temperature of the water in the electric water heater drops significantly during peak power consumption periods, the heating device is controlled to heat the water. This reduces the number of times the water is heated during this period, thereby reducing the amount of electricity consumed during peak power consumption periods. A smaller hysteresis temperature is determined during peak and valley power consumption periods. When the temperature of the water in the electric water heater drops less during peak and valley power consumption periods, the heating device is controlled to heat the water. This reduces the temperature fluctuation of the water in the electric water heater during this period. When users use water during this period, they will not feel the drastic changes in water temperature, thereby improving the user experience.

[0025] In some embodiments of the present application, the environmental parameters include weather parameters;

[0026] The controller is configured to:

[0027] During the operation of the electric water heater, obtain the current weather parameters;

[0028] The corresponding hysteresis temperature is determined according to the current operation mode of the electric water heater and the weather parameter, and the temperature corresponding to the weather parameter is proportional to the hysteresis temperature.

[0029] In this application, in colder weather, users can tolerate smaller water temperature fluctuations. Therefore, a smaller hysteresis temperature is set, so that when users use water, the water temperature fluctuation is smaller, which can improve the user experience. In hotter weather, users can tolerate larger water temperature fluctuations. Therefore, a larger hysteresis temperature can be set to reduce the frequent heating of the water in the inner tank by the electric water heater.

[0030] In some embodiments of the present application, the controller is further configured to:

[0031] Obtain the hysteresis temperature input by the user under various operating modes and environmental parameters;

[0032] Generate the corresponding relationship between the operating mode, environmental parameters and hysteresis temperature.

[0033] In this application, users can set the hysteresis temperature independently to further enhance the user experience.

[0034] In some embodiments of the present application, the environmental parameter further includes a target time period at the current moment, where the target time period is any one of a plurality of pre-generated time periods, wherein the plurality of time periods are pre-generated based on the user's water consumption in different time periods;

[0035] The controller is further configured to:

[0036] During the operation of the electric water heater, the corresponding hysteresis temperature is determined according to the current operation mode of the electric water heater, the target time period and a pre-generated first correspondence; wherein the hysteresis temperature is inversely proportional to the water consumption corresponding to the target time period.

[0037] In this application, during the time period when the user frequently uses water, the electric water heater is set to a smaller hysteresis temperature, so that the water temperature fluctuation is small during this time period, so that the user will not feel obvious changes in temperature when using water during this time period. During the time period when the user does not frequently use water, the electric water heater is set to a larger hysteresis temperature, which can reduce the situation where the electric water heater frequently heats the water in the inner tank during this time period.

[0038] In some embodiments of the present application, the electric water heater further comprises:

[0039] a water outlet, provided on the body and in communication with the inner container, for conveying the water in the inner container out;

[0040] a water flow detection device, disposed at the water outlet, for detecting the water flow at the water outlet;

[0041] The controller is further configured to:

[0042] obtaining a first water flow rate detected by the water flow detection device at different times within a preset duration of the first startup of the electric water heater;

[0043] generating the first correspondence between the time period, the hysteresis temperature, and the operation mode according to the magnitude of the first water flow rate and the corresponding time;

[0044] The controller is further configured to:

[0045] The first corresponding relationship is updated every first preset time period according to the acquired new second water flow rate and the corresponding time.

[0046] In this application, a first correspondence is generated based on the user's water usage habits, so that the hysteresis temperature determined by the first correspondence is more in line with the user's needs. In addition, the first correspondence is updated at regular intervals, so that the first correspondence stored in the electric water heater is more in line with the user's habits.

[0047] In some embodiments of the present application, the electric water heater further comprises:

[0048] A human body detection device, provided on the body, for obtaining characteristic information of the user;

[0049] a water outlet, provided on the body and in communication with the inner container, for conveying the water in the inner container out;

[0050] a water flow detection device, disposed at the water outlet, for detecting the water flow at the water outlet;

[0051] The environmental parameters include a target signal, which is generated by the human body detection device when acquiring characteristic information of a target user;

[0052] The controller is configured to:

[0053] During the operation of the electric water heater, a water flow signal and a target signal of a target user are obtained, wherein the water flow signal is generated when the water flow detection device detects water flow at the water outlet;

[0054] According to the current operation mode of the electric water heater and the target signal, and according to a pre-generated second corresponding relationship, a hysteresis temperature corresponding to the target user is determined.

[0055] In this application, the hysteresis temperature can be customized according to the user, so that when different users use water, the hysteresis temperature of the electric water heater is the hysteresis temperature required by the user, which can improve the user experience.

[0056] In some embodiments of the present application, the controller is configured to:

[0057] When a third water flow rate and the target signal are obtained, and the target signal is obtained for the first time, a second correspondence is generated according to the water flow rate and the current operating mode of the water heater, where the third water flow rate is the water flow rate at the water outlet detected by the water flow detection device;

[0058] The controller is further configured to:

[0059] The second corresponding relationship is updated every second preset time period according to the acquired new fourth water flow rate and the target signal.

[0060] In this application, users can enter their own information and update it every once in a while so that the return temperature can better meet the needs of users.

[0061] In a second aspect, the present application provides a control method for an electric water heater, the electric water heater comprising:

[0062] ontology;

[0063] An inner tank, wherein the inner tank is used to store water;

[0064] a temperature detection device, disposed in the inner tank, for detecting the temperature of the water in the inner tank;

[0065] A heating device is provided in the inner tank and is used to heat the water in the inner tank;

[0066] A controller is provided in the body, and the method is applied to the controller, comprising:

[0067] During the operation of the electric water heater, determining the corresponding hysteresis temperature according to the current operation mode and environmental parameters of the electric water heater;

[0068] Obtaining the water temperature in the inner tank detected by the temperature detection device, and determining the difference between the preset water temperature and the water temperature;

[0069] When the difference is greater than the return temperature, the heating device is controlled to heat the water in the inner tank.

[0070] In a third aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a computer, they are used to implement the method described in the second aspect.

[0071] The computer-readable storage medium provided in the embodiment of the present application can execute the technical solutions in the above method embodiments, and its beneficial effects are similar and will not be repeated here.

[0072] In a fourth aspect, the present application provides a computer program product, comprising a computer program, which is used to implement the method described in the second aspect when executed by a computer.

[0073] The computer program product provided in the embodiment of the present application can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, which will not be described in detail here.

[0074] An embodiment of the present application provides an electric water heater and a control method for the electric water heater. The electric water heater includes: a main body; an inner tank for storing water; a temperature detection device disposed in the inner tank for detecting the temperature of the water in the inner tank; a heating device disposed in the inner tank for heating the water in the inner tank; and a controller disposed in the main body. The method includes: during the operation of the electric water heater, determining a corresponding hysteresis temperature based on the current operating mode and environmental parameters of the electric water heater; obtaining the water temperature in the inner tank detected by the temperature detection device, and determining the difference between the preset water temperature and the water temperature; when the difference is greater than the hysteresis temperature, controlling the heating device to heat the water in the inner tank. In this way, the corresponding hysteresis temperature is determined based on the operating mode and environmental parameters of the electric water heater, that is, the hysteresis temperature can change according to different environments, so that the determined hysteresis temperature is more in line with the user's needs, which can improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0076] Figure 1 is a schematic diagram of the external structure of an electric water heater according to some embodiments;

[0077] Figure 2 is a schematic diagram of the internal structure of an electric water heater according to some embodiments;

[0078] Figure 3 A flow chart of a control method for an electric water heater according to some embodiments Figure 1 ;

[0079] Figure 4 A flow chart of a control method for an electric water heater according to some embodiments Figure 2 ;

[0080] Figure 5 A flow chart of a control method for an electric water heater according to some embodiments Figure 3 ;

[0081] Figure 6 A flow chart of a control method for an electric water heater according to some embodiments Figure 4 ;

[0082] Figure 7 A flow chart of a control method for an electric water heater according to some embodiments Figure 5 ;

[0083] Figure 8 This is a schematic diagram of an interface for a user to input hysteresis temperature under various operating modes and various environmental parameters according to some embodiments;

[0084] Figure 9 is a schematic diagram of a scenario in which a user enters information according to some embodiments;

[0085] Figure 10 A flow chart of a control method for an electric water heater according to some embodiments Figure 6 . DETAILED DESCRIPTION

[0086] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0087] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0088] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0089] Take, for example, a storage-type electric water heater. This device heats and stores water in a container and is equipped with a water temperature control device. Although these water heaters have thick insulation to slow the natural cooling of the water, the water temperature will still gradually drop. In other words, after the water is heated, it will cool down after a period of time.

[0090] To ensure users always have access to hot water at the right temperature, electric water heaters are equipped with a differential temperature control mechanism during the heat preservation process. This mechanism monitors the water temperature in the electric water heater in real time. If the actual water temperature falls below the set temperature by the differential temperature, the heating process is restarted until the water temperature returns to the set temperature.

[0091] In some implementations, the differential temperature is set by a technician before the electric water heater leaves the factory, or is a fixed temperature value set by the user. Thus, when the difference between the set temperature and the detected temperature of the water in the inner tank is greater than or equal to the differential temperature, the water in the inner tank is heated until the temperature of the water in the inner tank reaches the set temperature.

[0092] However, when heating the water in the electric water heater's tank using a fixed hysteresis temperature control, the hysteresis temperature may be too large or too small. When the hysteresis temperature is too large, it takes a long time to reheat to the set temperature, which may cause the water temperature to fluctuate beyond a reasonable range, and the user may experience noticeable changes in temperature when using the water. When the hysteresis temperature is too small, the heating may be frequently started and stopped, which not only generates additional energy consumption but also accelerates the wear of equipment components. Therefore, the above implementation solution may result in a poor user experience.

[0093] Based on this, the present application provides an electric water heater and a control method for the electric water heater, setting different hysteresis temperatures for different operating modes and environmental parameters. In this way, during the operation of the water heater, the hysteresis temperature can change with changes in the external environment, so that the hysteresis temperature can better meet the needs of users and improve the user experience.

[0094] The technical solution of the present application is described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other or exist independently. For the same or similar concepts or processes, some embodiments may not be described in detail. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0095] First, the structure of the electric water heater provided in some embodiments of the present application is described.

[0096] In one possible implementation, Figure 1 FIG. 1 is a schematic diagram of the external structure of an electric water heater according to some embodiments, such as Figure 1As shown, the electric water heater includes a body 10 , and the body 10 includes a shell 101 .

[0097] The housing 101 is used to wrap the internal components of the water heater.

[0098] The internal structure of the electric water heater Figure 2 As shown, Figure 2 Schematic diagram of the internal structure of an electric water heater according to some embodiments.

[0099] like Figure 2 As shown, the electric water heater includes an inner tank 201 , a temperature detection device 202 , a heating device 203 , a water inlet 204 , and a water outlet 205 .

[0100] The temperature detection device 202 and the heating device 203 are both disposed in the inner container 201. The temperature detection device 202 is used to detect the temperature of the water in the inner container 201. The heating device 203 is used to heat the water in the inner container 201.

[0101] For example, the temperature detection device 202 may be a temperature sensor, such as Figure 2 As shown, the temperature sensor can be placed in the temperature measuring tube.

[0102] like Figure 2 As shown, the water inlet 204 and the water outlet 205 are both connected to the inner container 201. The water inlet 204 is used to let water into the inner container 201, and the water outlet 205 is used to transport the water in the inner container 201 out.

[0103] The embodiments of this application are only Figure 2 This is for illustration only and does not constitute any limitation.

[0104] In a possible implementation, the electric water heater further includes a controller ( Figure 2 not shown).

[0105] In the embodiment of the present application, the controller may be a microcontroller unit (MCU) or other types of controllers. The embodiment of the present application does not specifically limit the controller.

[0106] In combination with the above content, the following describes the control method of the electric water heater during its operation. For details, please refer to Figure 3 shown. Figure 3 A flow chart of a control method for an electric water heater according to some embodiments Figure 1 .

[0107] It should be noted that this control method is applied to the controller of the electric water heater.

[0108] Figure 3As shown, the control method of the electric water heater may include the following steps:

[0109] S301. During the operation of the electric water heater, determine the corresponding hysteresis temperature according to the current operation mode and environmental parameters of the electric water heater.

[0110] The operating modes of the electric water heater may include normal mode, energy-saving mode, rapid heating mode, etc. The embodiment of the present application does not specifically limit the modes of the electric water heater.

[0111] In this application, the corresponding hysteresis temperature is determined according to the current operating mode and environmental parameters of the electric water heater, which may include the following possible implementations:

[0112] In one possible implementation, the environmental parameters include season.

[0113] Determining the corresponding hysteresis temperature may include: during the operation of the electric water heater, determining the corresponding hysteresis temperature according to the current operation mode and season of the electric water heater; wherein the hysteresis temperature is proportional to the overall temperature corresponding to the season.

[0114] It should be noted that the overall temperature corresponding to each season may be medium in spring and autumn, high in summer, and low in winter.

[0115] For example, the corresponding relationship between the season and the hysteresis temperature in the current operating mode can be determined according to the current operating mode. The hysteresis temperature corresponding to the season can be determined according to the current season and the corresponding relationship.

[0116] Under different operating modes, the return temperature difference corresponding to the same season may be equal or unequal, and this embodiment of the present application does not limit this.

[0117] In this way, different hysteresis temperatures are determined in different seasons, allowing for a higher hysteresis temperature in the summer and a lower hysteresis temperature in the winter. Since users have lower requirements for water temperature fluctuations in the summer than in the winter, by determining different hysteresis temperatures in different seasons, the water temperature differential values ​​of the electric water heater can better meet user needs, improving the user experience.

[0118] In another possible implementation, the environmental parameter includes a peak power consumption period or a peak / valley power consumption period.

[0119] Determining the corresponding hysteresis temperature may include: during the operation of the electric water heater, if the current moment is in the peak power consumption period, determining the corresponding first hysteresis temperature according to the current operation mode of the electric water heater and the peak power consumption period.

[0120] If the current moment is in the peak and valley time period of electricity consumption, the corresponding second hysteresis temperature is determined according to the current operation mode of the electric water heater and the peak and valley time period of electricity consumption, wherein the second hysteresis temperature is less than the first hysteresis temperature.

[0121] For example, the corresponding relationship between the peak power consumption time period, the peak power consumption time period, and the hysteresis temperature in the current operation mode can be determined according to the current operation mode. The hysteresis temperature corresponding to the power consumption time period at the current time can be determined according to the current time and the corresponding relationship.

[0122] Under different operating modes, the hysteresis temperatures corresponding to the same power consumption time period may be equal or unequal, and this embodiment of the present application does not limit this.

[0123] In this application, the electricity price is higher during the peak electricity consumption period, and lower during the peak and valley electricity consumption period.

[0124] In this way, the electric water heater can determine a larger hysteresis temperature difference during peak power consumption periods. When the temperature of the water in the electric water heater drops significantly during peak power consumption periods, the heating device is controlled to heat the water. This reduces the number of water heating operations during this period, thereby reducing the amount of electricity consumed during peak power consumption periods. A smaller hysteresis temperature difference is determined during peak and valley power consumption periods. When the temperature of the water in the electric water heater drops less during peak and valley power consumption periods, the heating device is controlled to heat the water. This reduces the temperature fluctuation of the water in the electric water heater during this period. When users use water during this period, they will not feel the drastic changes in water temperature, thereby improving the user experience.

[0125] In another possible implementation, the environmental parameters include weather parameters.

[0126] Determining the corresponding hysteresis temperature may include: obtaining current weather parameters during the operation of the electric water heater; determining the corresponding hysteresis temperature based on the current operation mode and weather parameters of the electric water heater, wherein the temperature corresponding to the weather parameters is proportional to the hysteresis temperature.

[0127] For example, the electric water heater can establish a connection with a cloud device to obtain weather parameters in the cloud device. The weather parameters may include cloudy, sunny, rainy, snowy, temperature, wind speed, etc., which is not limited in this embodiment of the present application.

[0128] For example, the corresponding relationship between the weather parameter and the hysteresis temperature in the current operating mode can be determined according to the current operating mode. The hysteresis temperature corresponding to the current weather parameter can be determined according to the current weather parameter and the corresponding relationship.

[0129] In different operating modes, the return temperature difference corresponding to the same weather parameter may be equal or unequal, and this embodiment of the present application does not limit this.

[0130] When the temperature corresponding to the weather parameter is higher, the user's requirements for the water temperature fluctuation of the electric water heater are lower, so the corresponding return temperature difference is larger. When the temperature corresponding to the weather parameter is lower, the user's requirements for the water temperature fluctuation of the electric water heater are higher, so the corresponding return temperature difference is smaller.

[0131] In this way, in colder weather, users can tolerate smaller water temperature fluctuations. Therefore, setting a smaller hysteresis temperature allows users to experience smaller water temperature fluctuations when using water, which can improve the user experience. In hotter weather, users can tolerate larger water temperature fluctuations. Therefore, setting a larger hysteresis temperature can reduce the need for the electric water heater to frequently heat the water in the tank.

[0132] In another possible implementation, the environmental parameters also include a target time period at the current moment, where the target time period is any one of a plurality of pre-generated time periods, and the plurality of time periods are pre-generated based on the user's water consumption in different time periods.

[0133] Determining the corresponding hysteresis temperature may include: during the operation of the electric water heater, determining the corresponding hysteresis temperature according to the current operation mode of the electric water heater, the target time period and a pre-generated first correspondence; wherein the hysteresis temperature is inversely proportional to the water consumption corresponding to the target time period.

[0134] For example, the corresponding relationship between different time periods and hysteresis temperatures in the current operating mode can be determined according to the current operating mode, and the hysteresis temperature corresponding to the time period at the current time can be determined according to the current time and the corresponding relationship.

[0135] Under different operating modes, the return temperature difference corresponding to the same time period may be equal or unequal, and this embodiment of the present application does not limit this.

[0136] For example, when a user uses an electric water heater, the electric water heater records the user's usage habits, which include the amount of water used by the user in different time periods. Based on the amount of water used by the user in different time periods, a corresponding relationship between different time periods and hysteresis temperature is generated.

[0137] It is understandable that when the water consumption in a certain time period is large, it means that the user uses water frequently during this time period. In order to improve the user experience, the return temperature during this time period can be set to be smaller so that the water temperature fluctuation during this time period is smaller.

[0138] In this way, during the time period when users frequently use water, the electric water heater is set to a smaller hysteresis temperature, so that the water temperature fluctuation is smaller during this period, so that users will not feel obvious changes in temperature when using water during this period. During the time period when users do not frequently use water, the electric water heater is set to a larger hysteresis temperature, which can reduce the situation where the electric water heater frequently heats the water in the inner tank during this period.

[0139] Exemplarily, the electric water heater further includes a water flow detection device disposed at the water outlet for detecting water flow at the water outlet. During a preset duration of initial startup of the electric water heater, a first water flow rate detected by the water flow detection device at different times is obtained; and based on the magnitude of the first water flow rate and the corresponding time, a first correspondence between the time period, the hysteresis temperature, and the operating mode is generated.

[0140] In this way, the first corresponding relationship is generated according to the user's water usage habits, so that the hysteresis temperature subsequently determined based on the first corresponding relationship better meets the user's needs.

[0141] The preset duration can be one week or one month, and this embodiment of the present application does not specifically limit the preset duration. In this application, in addition to obtaining water consumption, the number of water uses within a period of time can also be obtained, and the corresponding differential temperature is generated based on the number of water uses. Taking one day as an example, the corresponding differential temperature generated based on the number of water uses can be seen in Table 1 below.

[0142] Table 1

[0143]

[0144]

[0145] The first corresponding relationship is updated every first preset time period according to the acquired new second water flow rate and the corresponding time.

[0146] The first preset time period can be one month or one quarter, which is not limited in this embodiment of the present application.

[0147] In this way, the first corresponding relationship is updated once every period of time, so that the first corresponding relationship stored in the electric water heater is more in line with the user's habits.

[0148] In the present application, a corresponding hysteresis temperature may be generated according to the duration of the water use interval within a period of time. The corresponding relationship between the water use interval duration and the hysteresis temperature may be shown in Table 2 below.

[0149] Time interval between two water use The hysteresis temperature corresponding to this time period ≤0.5h 3℃ 0.5-1h 4℃ 1-2h 5℃ 2-3h 6℃ ≥3h 7℃

[0150] S302: Obtain the water temperature in the inner tank detected by the temperature detection device, and determine the difference between the preset water temperature and the water temperature.

[0151] For example, during the operation of the electric water heater, the temperature detection device detects the water temperature in the inner tank in real time, so that the controller can obtain the water temperature in the inner tank detected by the temperature detection device in real time.

[0152] After obtaining the water in the inner tank detected by the temperature detection device, the controller can calculate the difference between the preset water temperature and the water temperature. Specifically, the difference can be obtained by subtracting the water temperature from the preset water temperature.

[0153] The preset water temperature may be a desired water temperature pre-set by the user. For example, the preset water temperature may be 45° C. The present embodiment does not specifically limit the preset water temperature.

[0154] S303: When the difference is greater than the return temperature, the heating device is controlled to heat the water in the inner tank.

[0155] Exemplarily, when the difference is greater than the return temperature, a signal may be sent to the heating device to start the heating device so that the heating device heats the water in the inner tank.

[0156] When the heating device heats the water in the inner tank, the temperature detection device detects the water temperature in the inner tank in real time, and the controller can obtain the water temperature in the inner tank detected by the temperature detection device in real time. When the water temperature reaches a preset temperature, the heating device is controlled to stop heating the water in the inner tank.

[0157] In this way, during the operation of the electric water heater, the corresponding hysteresis temperature can be determined according to the current operating mode and environmental parameters of the electric water heater, that is, the hysteresis temperature can change according to the changes in the operating mode and environmental parameters, so that when the water is subsequently heated by the hysteresis temperature control, the water temperature fluctuation in the inner tank of the electric water heater is more in line with the needs of different situations, thereby improving the user experience.

[0158] Next, with respect to the methods for determining the hysteresis temperature described in the above several possible implementations, control methods for the electric water heater under various possible implementations are described.

[0159] When the environmental parameters include seasons, the control method of the electric water heater can be found in Figure 4 As shown, Figure 4 A flow chart of a control method for an electric water heater according to some embodiments Figure 2 .

[0160] like Figure 4 As shown, the control method of the electric water heater includes:

[0161] S401, start the machine.

[0162] S402: Obtain the current operating mode and season.

[0163] S403: Determine the hysteresis temperature corresponding to the current season under the current operating mode according to the operating mode and season.

[0164] S404: Setting the hysteresis temperature of the electric water heater to the determined hysteresis temperature.

[0165] S405: Obtain the water temperature in the inner tank detected by the temperature detection device, and determine the difference between the preset water temperature and the water temperature.

[0166] S406: Determine whether the difference between the preset water temperature and the water temperature is greater than the return temperature.

[0167] If the difference between the preset water temperature and the water temperature is greater than the hysteresis temperature, step S407 is executed; if the difference between the preset water temperature and the water temperature is less than or equal to the hysteresis temperature, step S405 is executed.

[0168] S407: Control the heating device to heat the water in the inner tank.

[0169] S408: Determine whether the water temperature reaches a preset temperature.

[0170] When the water temperature reaches the preset temperature, step S409 is executed; if it does not reach the preset temperature, step S407 is executed.

[0171] S409: Control the heating device to stop heating the water in the inner tank.

[0172] In this way, different hysteresis temperatures are determined in different seasons, allowing for a higher hysteresis temperature in the summer and a lower hysteresis temperature in the winter. Since users have lower requirements for water temperature fluctuations in the summer than in the winter, by determining different hysteresis temperatures in different seasons, the water temperature differential values ​​of the electric water heater can better meet user needs, improving the user experience.

[0173] When the environmental parameters include peak power consumption period or peak power consumption period, the control method of the electric water heater can be found in Figure 5 As shown, Figure 5 A flow chart of a control method for an electric water heater according to some embodiments Figure 3 .

[0174] like Figure 5 As shown, the control method of the electric water heater includes:

[0175] S501: The electric water heater is running.

[0176] S502: Obtain the current operating mode and time.

[0177] S503: Determine the hysteresis temperature corresponding to the power consumption time period at the current moment in the current operating mode according to the operating mode and the time.

[0178] Exemplarily, the power consumption time period includes a power consumption peak time period or a power consumption peak-valley time period.

[0179] S504: Set the hysteresis temperature of the electric water heater to the determined hysteresis temperature.

[0180] S505: Obtain the water temperature in the inner tank detected by the temperature detection device, and determine the difference between the preset water temperature and the water temperature.

[0181] S506: Determine whether the difference between the preset water temperature and the water temperature is greater than the return temperature.

[0182] If the difference between the preset water temperature and the water temperature is greater than the hysteresis temperature, step S507 is executed; if the difference between the preset water temperature and the water temperature is less than or equal to the hysteresis temperature, step S505 is executed.

[0183] S507: Control the heating device to heat the water in the inner tank.

[0184] S508: Determine whether the water temperature reaches a preset temperature.

[0185] When the water temperature reaches the preset temperature, step S509 is executed; if it does not reach the preset temperature, step S507 is executed.

[0186] S509: Control the heating device to stop heating the water in the inner tank.

[0187] This allows the electric water heater to set a larger differential temperature during peak hours, reducing water heating times and power consumption during these periods. Setting a smaller differential temperature during peak and off-peak hours reduces water temperature fluctuations within the electric water heater, minimizing user experience during these periods.

[0188] When the environmental parameters include weather parameters, the control method of the electric water heater can be found in Figure 6 As shown, Figure 6 A flow chart of a control method for an electric water heater according to some embodiments Figure 4 .

[0189] like Figure 6 As shown, the control method of the electric water heater includes:

[0190] S601: The electric water heater is running.

[0191] S602: Obtain the current operating mode and weather parameters.

[0192] S603: Determine the hysteresis temperature corresponding to the weather parameters in the current operating mode according to the operating mode and the weather parameters.

[0193] The weather parameters can be found in the above embodiments and will not be described in detail here.

[0194] S604: Set the hysteresis temperature of the electric water heater to the determined hysteresis temperature.

[0195] S605: Obtain the water temperature in the inner tank detected by the temperature detection device, and determine the difference between the preset water temperature and the water temperature.

[0196] S606: Determine whether the difference between the preset water temperature and the water temperature is greater than the return temperature.

[0197] If the difference between the preset water temperature and the water temperature is greater than the hysteresis temperature, step S607 is executed; if the difference between the preset water temperature and the water temperature is less than or equal to the hysteresis temperature, step S605 is executed.

[0198] S607: Control the heating device to heat the water in the inner tank.

[0199] S608: Determine whether the water temperature reaches a preset temperature.

[0200] When the water temperature reaches the preset temperature, step S609 is executed; if it does not reach the preset temperature, step S607 is executed.

[0201] S609: Control the heating device to stop heating the water in the inner tank.

[0202] In this way, different return temperature differences are determined in different weather conditions, so that the determined return temperature differences can better meet the needs of users and improve user experience.

[0203] When the environmental parameters include the target time period at the current moment, the control method of the electric water heater can be found in Figure 7 As shown, Figure 7 A flow chart of a control method for an electric water heater according to some embodiments Figure 5 .

[0204] like Figure 7 As shown, the control method of the electric water heater includes:

[0205] S701. The electric water heater is running.

[0206] S702: Obtain the current operating mode and time.

[0207] S703: Determine the hysteresis temperature corresponding to the target time period at the current moment in the current operating mode according to the operating mode and the time.

[0208] The target time period is any one of a plurality of pre-generated time periods, where the plurality of time periods are pre-generated based on the user's water consumption in different time periods.

[0209] S704: Set the hysteresis temperature of the electric water heater to the determined hysteresis temperature.

[0210] S705: Obtain the water temperature in the inner tank detected by the temperature detection device, and determine the difference between the preset water temperature and the water temperature.

[0211] S706: Determine whether the difference between the preset water temperature and the water temperature is greater than the return temperature.

[0212] If the difference between the preset water temperature and the water temperature is greater than the hysteresis temperature, step S707 is executed; if the difference between the preset water temperature and the water temperature is less than or equal to the hysteresis temperature, step S705 is executed.

[0213] S707: Control the heating device to heat the water in the inner tank.

[0214] S708: Determine whether the water temperature reaches a preset temperature.

[0215] When the water temperature reaches the preset temperature, step S709 is executed; if it does not reach the preset temperature, step S707 is executed.

[0216] S709: Control the heating device to stop heating the water in the inner tank.

[0217] In this way, the return temperature difference can be adjusted according to the user's water consumption habits, so that the return temperature difference can better meet the user's needs and improve the user experience.

[0218] In this application, the return temperature difference under each operating mode and each environmental parameter can be set by the user.

[0219] For example, a user can input the hysteresis temperature difference under various operating modes and environmental parameters through a physical button on the electric water heater, a button on the electric water heater's display screen, or an application corresponding to the electric water heater. The controller obtains the hysteresis temperature difference under various operating modes and environmental parameters input by the user and generates a corresponding relationship between the operating mode, environmental parameter, and hysteresis temperature difference.

[0220] Figure 8 This is a schematic diagram of an interface for a user to input hysteresis temperature under various operating modes and various environmental parameters according to some embodiments.

[0221] like Figure 8 As shown, the display interface of the electric water heater displays operation mode 1, operation mode 2, and operation mode 3. Each operation mode corresponds to the four seasons of spring, summer, autumn, and winter. The user can enter the return temperature in the return temperature input box corresponding to each season.

[0222] The embodiments of this application are only Figure 8 The examples shown are for illustration only and do not constitute any limitation.

[0223] In this way, users can set the hysteresis temperature independently, further improving the user experience.

[0224] In the present application, the electric water heater further includes a human body detection device, which is provided on the body of the electric water heater and is used to obtain characteristic information of the user.

[0225] Exemplarily, the human body detection device may be a fingerprint collection device or other device capable of determining the identity of a user, which is not limited in the embodiments of the present application.

[0226] In the present application, the environmental parameters may also include a target signal, which is generated when the human detection device obtains characteristic information of the target user.

[0227] Determining the corresponding hysteresis temperature may include: during the operation of the electric water heater, obtaining a water flow signal and a target signal of a target user, where the water flow signal is generated when a water flow detection device detects water flow at the water outlet; and determining the hysteresis temperature corresponding to the target user based on the current operating mode of the electric water heater, the target signal, and a pre-generated second correspondence.

[0228] When the water flow signal and the target signal of the target user are obtained, it can be determined that the target user is using the electric water heater. Therefore, the hysteresis temperature of the electric water heater can be adjusted to the hysteresis temperature corresponding to the target user.

[0229] In this way, the hysteresis temperature can be customized according to the user, so that when different users use water, the hysteresis temperature of the electric water heater is the hysteresis temperature required by the user, which can improve the user experience.

[0230] In this application, when the third water flow and target signal are obtained, and the target signal is obtained for the first time, a second corresponding relationship is generated based on the water flow and the current operating mode of the water heater. The third water flow is the water flow at the water outlet detected by the water flow detection device.

[0231] When the third water flow rate and target signal are obtained, and the target signal is obtained for the first time, it means that the target user is using the electric water heater for the first time, or the user wants to enter his or her own information. Figure 9 As shown, Figure 9 A schematic diagram of a scenario in which a user enters information according to some embodiments.

[0232] The second corresponding relationship is updated every second preset time period according to the acquired new fourth water flow rate and target signal.

[0233] The second preset time period can be half a year or one month, which is not limited in the embodiment of the present application.

[0234] In this way, users can enter their own information and update it every once in a while, so that the return temperature difference can better meet the needs of users.

[0235] In combination with the above embodiments, the control method of the present application is further described below. Figure 10 A flow chart of a control method for an electric water heater according to some embodiments Figure 6 .

[0236] like Figure 10 As shown, the control method of the electric water heater includes:

[0237] S1001. The electric water heater is running.

[0238] S1002: Adjust the hysteresis temperature of the electric water heater to a new hysteresis temperature.

[0239] S1003: Obtain the water temperature in the inner tank detected by the temperature detection device, and determine the difference between the preset water temperature and the water temperature.

[0240] S1004: Determine whether the difference between the preset water temperature and the water temperature is greater than the new return temperature difference.

[0241] If the difference between the preset water temperature and the water temperature is greater than the hysteresis temperature, step S1005 is executed; if the difference between the preset water temperature and the water temperature is less than or equal to the hysteresis temperature, step S1003 is executed.

[0242] S1005: Control the heating device to heat the water in the inner tank.

[0243] S1006: Determine whether the water temperature reaches a preset temperature.

[0244] When the water temperature reaches the preset temperature, step S1007 is executed; if it does not reach the preset temperature, step S1005 is executed.

[0245] S1007: Control the heating device to stop heating the water in the inner tank.

[0246] In this way, during the operation of the electric water heater, the hysteresis temperature can be adjusted so that when the water is subsequently heated by the hysteresis temperature control, the water temperature fluctuation in the electric water heater tank is more in line with the needs of different situations, thereby improving the user experience.

[0247] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores computer execution instructions, which, when executed by a computer, are used to implement the technical solution shown in the above method embodiment.

[0248] The present application also provides a program product, which includes execution instructions stored in a readable storage medium. When the computer program is executed by a computer, the technical solution shown in the above method embodiment is executed. The specific implementation method and technical effect are similar and will not be repeated here.

[0249] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0250] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various variations of the embodiments suitable for specific use considerations.

[0251] In this application, "and / or" is simply a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document indicates that the related objects are in an "or" relationship.

[0252] "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a, b, and c, where each of a, b, and c can be an element itself or a set containing one or more elements.

[0253] In this application, "at least one" means one or more. "Multiple" means two or more. The first, second, etc. descriptions that appear in the embodiments of this application are only for illustration and to distinguish the described objects. There is no order, nor does it represent a special limitation on the number of devices in the embodiments of this application, and cannot constitute any limitation on the embodiments of this application. For example, the first threshold and the second threshold are only for distinguishing different thresholds, and do not indicate the difference in size, priority, or importance of the two thresholds.

[0254] Throughout this application, the terms "exemplary," "in some embodiments," and "in other embodiments" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word "exemplary" is intended to present concepts in a concrete manner.

[0255] In this application, the terms "of," "corresponding," "relevant," "corresponding," and "associated" may sometimes be used interchangeably. It should be noted that, when the distinction is not emphasized, the meanings they convey are consistent. In the embodiments of this application, the terms "communication" and "transmission" may sometimes be used interchangeably. It should be noted that, when the distinction is not emphasized, the meanings they convey are consistent. For example, "transmission" may include "sending" and / or "receiving," and may be either a noun or a verb.

[0256] In this application, "equal to" can be used in conjunction with "less than" or "greater than", but not with both "less than" and "greater than". When "equal to" is used in conjunction with "less than", the technical solution used for "less than" applies. When "equal to" is used in conjunction with "greater than", the technical solution used for "greater than" applies.

Claims

1. An electric water heater, characterized in that: include: ontology; An inner tank, wherein the inner tank is used to store water; a temperature detection device, disposed in the inner tank, for detecting the temperature of the water in the inner tank; A heating device is provided in the inner tank and is used to heat the water in the inner tank; a controller is provided in the body and is configured to: During the operation of the electric water heater, determining the corresponding hysteresis temperature according to the current operation mode and environmental parameters of the electric water heater; Obtaining the water temperature in the inner tank detected by the temperature detection device, and determining the difference between the preset water temperature and the water temperature; When the difference is greater than the return temperature, the heating device is controlled to heat the water in the inner tank.

2. The electric water heater according to claim 1, characterized in that The environmental parameters include season; The controller is configured to: During the operation of the electric water heater, a corresponding hysteresis temperature is determined according to the current operation mode and season of the electric water heater; wherein the hysteresis temperature is proportional to the overall temperature corresponding to the season.

3. The electric water heater according to claim 1, characterized in that The environmental parameters include peak power consumption time period or peak / valley power consumption time period; The controller is configured to: During the operation of the electric water heater, if the current time is in the peak power consumption period, the corresponding first return temperature difference is determined according to the current operation mode of the electric water heater and the peak power consumption period; If the current moment is in the peak and valley time period of electricity consumption, a corresponding second hysteresis temperature is determined according to the current operation mode of the electric water heater and the peak and valley time period of electricity consumption, wherein the second hysteresis temperature is less than the first hysteresis temperature.

4. The electric water heater according to claim 1, characterized in that The environmental parameters include weather parameters; The controller is configured to: During the operation of the electric water heater, obtain the current weather parameters; The corresponding hysteresis temperature is determined according to the current operation mode of the electric water heater and the weather parameter, and the temperature corresponding to the weather parameter is proportional to the hysteresis temperature.

5. The electric water heater according to claim 1, characterized in that The controller is further configured to: Obtain the hysteresis temperature input by the user under various operating modes and environmental parameters; Generate the corresponding relationship between the operating mode, environmental parameters and hysteresis temperature.

6. The electric water heater according to claim 1, characterized in that The environmental parameters also include a target time period at the current moment, where the target time period is any one of a plurality of pre-generated time periods, wherein the plurality of time periods are pre-generated based on the user's water consumption in different time periods; The controller is further configured to: During the operation of the electric water heater, the corresponding hysteresis temperature is determined according to the current operation mode of the electric water heater, the target time period and a pre-generated first correspondence; wherein the hysteresis temperature is inversely proportional to the water consumption corresponding to the target time period.

7. The electric water heater according to claim 6, characterized in that The electric water heater also includes: a water outlet, provided on the body and in communication with the inner container, for conveying the water in the inner container out; a water flow detection device, disposed at the water outlet, for detecting the water flow at the water outlet; The controller is further configured to: obtaining a first water flow rate detected by the water flow detection device at different times within a preset duration of the first startup of the electric water heater; generating the first correspondence between the time period, the hysteresis temperature, and the operation mode according to the magnitude of the first water flow rate and the corresponding time; The controller is further configured to: The first corresponding relationship is updated every first preset time period according to the acquired new second water flow rate and the corresponding time.

8. The electric water heater according to claim 1, characterized in that The electric water heater also includes: A human body detection device, provided on the body, for obtaining characteristic information of the user; a water outlet, provided on the body and in communication with the inner container, for conveying the water in the inner container out; a water flow detection device, disposed at the water outlet, for detecting the water flow at the water outlet; The environmental parameters include a target signal, which is generated by the human body detection device when acquiring characteristic information of a target user; The controller is configured to: During the operation of the electric water heater, a water flow signal and a target signal of a target user are obtained, wherein the water flow signal is generated when the water flow detection device detects water flow at the water outlet; The hysteresis temperature corresponding to the target user is determined according to the current operation mode of the electric water heater, the target signal, and a pre-generated second corresponding relationship.

9. The electric water heater according to claim 8, characterized in that The controller is configured to: When a third water flow rate and the target signal are obtained, and the target signal is obtained for the first time, a second correspondence is generated according to the water flow rate and the current operating mode of the water heater, where the third water flow rate is the water flow rate at the water outlet detected by the water flow detection device; The controller is further configured to: The second corresponding relationship is updated every second preset time period according to the acquired new fourth water flow rate and the target signal.

10. A control method for an electric water heater, characterized in that: The electric water heater comprises: ontology; An inner tank, wherein the inner tank is used to store water; a temperature detection device, disposed in the inner tank, for detecting the temperature of the water in the inner tank; A heating device is provided in the inner tank and is used to heat the water in the inner tank; a controller is provided in the body, and the method is applied to the controller, including: During the operation of the electric water heater, determining the corresponding hysteresis temperature according to the current operation mode and environmental parameters of the electric water heater; Obtaining the water temperature in the inner tank detected by the temperature detection device, and determining the difference between the preset water temperature and the water temperature; When the difference is greater than the return temperature, the heating device is controlled to heat the water in the inner tank.

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