Control method and device for water heater, and water heater

Abstract

The present application relates to the technical field of water heaters, and provides a control method and device for a water heater, and a water heater. The control method for a water heater comprises: determining that a water heater is in a bathing water-use period of the current cycle, and acquiring an actual minimum temperature in an inner container of the water heater; and determining a comparison relationship between the actual minimum temperature and a cut-off temperature, and adjusting and updating a heating set temperature in the next cycle on the basis of a comparison result. By determining the comparison relationship between the actual minimum temperature and the cut-off temperature in the current bathing water-use period, and adjusting and updating the heating set temperature in the next bathing water-use period on the basis of the comparison result, the actual minimum temperature after use by the user gradually approaches the cut-off temperature, and after the heating set temperature has been updated several times, the actual minimum temperature finally fluctuates near the cut-off temperature, ensuring that the temperature of remaining hot water is low while hot water in the inner container can meet bathing requirements of the user. Correspondingly, due to the low heating set temperature of the water heater, energy waste of the water heater is reduced.

Description

Water heater control methods, control devices and water heaters

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 2024114191173, filed on October 11, 2024, entitled "Control Method, Control Device and Water Heater for Water Heater", which is incorporated herein by reference in its entirety. Technical Field

[0003] This application relates to the field of water heater technology, and in particular to water heater control methods, control devices, and water heaters. Background Technology

[0004] In related technologies, storage-type electric water heaters operate at a high-temperature heating setting temperature for a long time. The temperature change of the liquid in the storage chamber is small before and after bathing, resulting in the high temperature of the remaining hot water in the inner tank after the user finishes bathing. The remaining hot water is not used and its temperature continues to drop, resulting in energy waste. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems existing in the related art. To this end, this application proposes a control method for a water heater, which compares the actual minimum temperature and the cutoff temperature during a single shower time, and adjusts the heating set temperature for the next shower time period. This satisfies the user's shower water needs while avoiding excessive heating of the water in the storage chamber, which would lead to high temperature of the remaining water and energy waste.

[0006] This application also proposes a control device for a water heater.

[0007] This application also proposes a water heater.

[0008] A water heater control method according to a first aspect embodiment of this application includes:

[0009] Determine the current bathing water usage period of the water heater and obtain the actual minimum temperature inside the inner tank of the water heater; wherein, the actual minimum temperature is the temperature inside the inner tank when the water in the inner tank stops heating during the current bathing water usage period, and the hot water in the inner tank gradually decreases as the user bathes until the user finishes bathing and the hot water stops flowing out of the inner tank.

[0010] Determine the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjust and update the heating setting temperature of the water heater in the next cycle based on the comparison result;

[0011] The cutoff temperature is the minimum temperature at which the water in the inner tank meets the user's needs. The temperature of the warm water formed by mixing water above the cutoff temperature with ambient temperature water outside is greater than or equal to the temperature required by the user for bathing. The heating setting temperature is the initial water temperature during the bathing water usage period.

[0012] According to the water heater control method of this application embodiment, by determining the comparison relationship between the actual minimum temperature and the cutoff temperature during the current bathing water usage period, and adjusting and updating the heating setting temperature for the next bathing water usage period based on the comparison result, the actual minimum temperature after the user finishes using the water gradually approaches the cutoff temperature. After several updates to the heating setting temperature, the actual minimum temperature eventually fluctuates around the cutoff temperature, ensuring that the hot water in the inner tank meets the user's bathing needs while keeping the temperature of the remaining hot water lower, and consequently, the heating setting temperature of the water heater is lower, thereby reducing energy waste of the water heater.

[0013] In some embodiments, determining the comparison between the actual minimum temperature and the cutoff temperature, and adjusting and updating the heating setting temperature of the water heater for the next cycle based on the comparison result, includes:

[0014] If the actual minimum temperature is determined to be higher than the cutoff temperature, the heating set temperature is controlled to decrease in the next cycle.

[0015] or,

[0016] If the actual minimum temperature is determined to be lower than the cutoff temperature, the heating set temperature is controlled to increase in the next cycle.

[0017] In some embodiments, determining that the actual minimum temperature is higher than the cutoff temperature and controlling the heating set temperature to decrease in the next cycle includes:

[0018] Control the heating setting temperature to decrease by a first set temperature difference;

[0019] The step of determining that the actual minimum temperature is lower than the cutoff temperature and controlling the heating set temperature to increase in the next cycle includes:

[0020] The heating setting temperature is controlled to rise by a second set temperature difference, wherein the first set temperature difference is less than the second set temperature difference.

[0021] In some embodiments, determining that the actual minimum temperature is lower than the cutoff temperature and controlling the heating set temperature to rise in the next cycle includes:

[0022] If the actual minimum temperature is determined to be lower than the cutoff temperature, and the actual minimum temperature is lower than or equal to the inlet water temperature, the heating setting temperature is controlled to rise directly to the first set temperature.

[0023] The first set temperature is the initial water temperature for the bathing water usage period set at the factory of the water heater.

[0024] In some embodiments, the control method for the water heater further includes:

[0025] When the water heater is not in use for bathing, control the water heater to maintain the water temperature in the inner tank within the range of 35 degrees Celsius to 50 degrees Celsius.

[0026] In some embodiments, determining that the water heater is in the current cycle's bathing water usage period and obtaining the actual lowest temperature inside the water heater's inner tank includes:

[0027] Obtain the state characteristic parameters of the water inside the inner tank;

[0028] Based on the state characteristic parameters reaching the set parameters, it is determined that the water heater is in the bathing water usage period.

[0029] In some embodiments, the state characteristic parameters include at least one of the water cooling rate and the outflow rate, as well as the outflow time;

[0030] The setting parameters include at least one of a setting rate and a setting flow rate, and a setting water outlet time. The setting rate corresponds to the cooling rate, the setting flow rate corresponds to the water outlet flow rate, and the water outlet time corresponds to the setting water outlet time.

[0031] In some embodiments, determining that the water heater is in the bathing water usage period based on the state characteristic parameter reaching a set parameter includes:

[0032] If the cooling rate is greater than or equal to the set rate, and the water outlet time is greater than or equal to the set water outlet time, then the water heater is determined to be in the bathing water usage period.

[0033] And / or,

[0034] If the water flow rate is greater than or equal to the set flow rate and the water outlet time is greater than or equal to the set water outlet time, then the water heater is determined to be in the bathing water usage period.

[0035] In some embodiments, before determining that the water heater is in the current cycle's bathing water usage period and obtaining the actual lowest temperature inside the water heater's inner tank, the process includes:

[0036] The historical parameters of the water heater are obtained, and the cutoff temperature and the single-person shower setting temperature are calculated based on the historical parameters, wherein the single-person shower setting temperature is the initial water temperature of the water heater that meets the needs of a single user.

[0037] In some embodiments, the control method for the water heater further includes:

[0038] The comparison relationship between the heating setting temperature and the single-person shower setting temperature is determined, and the heating setting temperature of the water heater is adjusted and updated in the next cycle based on the comparison result.

[0039] In some embodiments, determining the comparison between the heating set temperature and the single-person shower set temperature, and adjusting and updating the heating set temperature of the water heater in the next cycle based on the comparison result, includes:

[0040] If the actual minimum temperature is higher than the cutoff temperature, and the heating set temperature is determined to be higher than the single-person wash set temperature, then the heating set temperature is controlled to decrease.

[0041] or,

[0042] If the heating setting temperature is determined to be lower than the single-person wash setting temperature, the heating setting temperature is controlled to rise to the single-person wash setting temperature.

[0043] In some embodiments, the historical parameters include inlet water temperature, heating power of the water heater, inlet water flow rate, water consumption per person, volume of the inner tank of the water heater, and mixing water temperature.

[0044] In some embodiments, obtaining historical parameters of the water heater and calculating the cutoff temperature and the single-person shower setting temperature based on the historical parameters includes:

[0045] The historical parameters are obtained, and the cutoff temperature is calculated based on the inlet water temperature, the heating power, and the inlet water flow rate.

[0046] The set temperature for one person's shower is calculated based on the water consumption for one person's shower, the volume of the inner tank of the water heater, the mixing temperature, the inlet water temperature, and the cut-off temperature; wherein, the water consumption for one person's shower is obtained by statistically analyzing the water consumption of the user during several showers based on historical parameters of the water heater; the mixing temperature is the temperature of the water that the user comes into contact with during showering.

[0047] In some embodiments, the cutoff temperature is calculated based on the following formula:

[0048] T_cutoff = P / (f×70) + T_inflow;

[0049] Where T_cutoff is the cutoff temperature, P is the heating power of the water heater, f is the inlet water flow rate, and T_inlet water is the inlet water temperature.

[0050] In some embodiments, the temperature setting for the single-person wash is calculated based on the following formula:

[0051] T_one_wash = M × (T_mixed_water - T_in_water) / V + T_stop;

[0052] Where T is the set temperature for a single person's wash, M is the water volume required to meet the needs of a single user's wash, T is the mixing temperature, T is the inlet temperature, V is the outlet volume, and T is the cutoff temperature.

[0053] The control device for a water heater according to a second aspect embodiment of this application includes:

[0054] The acquisition module is used to determine the water heater during a single shower water usage period and acquire the actual lowest temperature inside the inner tank of the water heater;

[0055] The control module is used to determine the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjust and update the heating setting temperature based on the comparison result;

[0056] The cutoff temperature is the minimum temperature at which the water in the inner tank meets the user's usage requirements; the heating setting temperature is the initial water temperature during the bathing water usage period.

[0057] The technical effects of the water heater control device according to the embodiments of this application correspond to the technical effects of the water heater control method of the first aspect embodiment, and will not be repeated here.

[0058] A water heater according to a third aspect embodiment of the invention includes:

[0059] The inner liner forms a liquid storage cavity;

[0060] At least one temperature detector is provided to detect the water temperature in the liquid storage chamber;

[0061] Heating assembly, adapted to heat the water in the liquid storage chamber;

[0062] The controller, connected to the temperature detector and the heating component, is used to execute the control method for the water heater as described above.

[0063] An electronic device according to a fourth aspect of this application includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the control method for a water heater as described above.

[0064] According to a fifth aspect embodiment of the present application, a non-transitory computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the control method for a water heater as described above.

[0065] A computer program product according to a sixth aspect of this application includes a computer program that, when executed by a processor, implements the control method for a water heater as described above.

[0066] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0067] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0068] Figure 1 is a schematic flowchart of one of the water heater control methods provided in the embodiments of this application;

[0069] Figure 2 is a schematic diagram of the control device for a water heater provided in an embodiment of this application;

[0070] Figure 3 is a second schematic flowchart of the water heater control method provided in the embodiment of this application;

[0071] Figure 4 is a third flowchart illustrating the control method for a water heater provided in this application embodiment;

[0072] Figure 5 is a schematic diagram of the control method for a water heater provided in an embodiment of this application;

[0073] Figure 6 is a temperature change trend diagram of the water inside the inner tank provided in the embodiment of this application; and

[0074] Figure 7 is a schematic diagram of the structure of the electronic device provided in an embodiment of this application.

[0075] Reference numerals: 600, control device for water heater; 610, acquisition module; 620, control module; 810, processor; 820, communication interface; 830, memory; 840, communication bus. Detailed Implementation

[0076] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0077] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0078] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0079] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] The control method of a water heater according to a first aspect of this application is described below with reference to the accompanying drawings.

[0082] Before introducing the water heater control method of this application embodiment, it is necessary to first explain the application scenarios of the water heater control method. The water heater control method of this application is applicable to various types of water heaters and can be applied to smart terminals such as smartphones, tablets, and computers. It can also be applied to servers connected to water heaters. This application does not impose special limitations on the application scenarios, as long as they can support and implement the water heater control method.

[0083] The water heater to which the control method for the water heater proposed in this application is applicable has an inner tank, at least one temperature detector, and a heating component. The inner tank forms a water storage chamber. The temperature detector is adapted to detect the water temperature in the water storage chamber. The heating component is adapted to heat the water in the water storage chamber to a set heating temperature.

[0084] As shown in Figures 1 and 4, the water heater control method according to the first aspect of this application includes:

[0085] Step 100: Determine the current bathing water usage period of the water heater and obtain the actual lowest temperature inside the inner tank of the water heater.

[0086] Among them, "determining the bathing water usage period of the water heater in the current cycle" can be determined by detecting changes in water temperature inside the tank (when the hot water content decreases, the water temperature inside the tank decreases), changes in water flow (when the water flow increases), or by statistically analyzing the time nodes of users' bathing based on historical parameters (e.g., if the user bathes from 8:00 to 8:30 every day, then this time period is the water usage period).

[0087] The "obtaining the actual lowest temperature inside the inner tank of the water heater" can be achieved by setting a temperature detector in the water heater to detect the water temperature inside the inner tank. The temperature detector can be a temperature sensor, an infrared thermometer, a thermometer, etc.

[0088] During the current shower water usage period, since the water in the inner tank is not heated by the heating element, the hot water in the inner tank gradually decreases as the user showers, causing the actual temperature to gradually drop until the user finishes showering, at which point the hot water stops flowing out of the inner tank, and the temperature inside the inner tank reaches the actual lowest temperature.

[0089] Step 200: Determine the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjust and update the heating setting temperature of the water heater in the next cycle based on the comparison result; wherein, the cutoff temperature is the minimum temperature at which the water temperature in the inner tank meets the user's needs; the heating setting temperature is the initial water temperature during the bathing water usage period.

[0090] The water in the inner tank mixes with the ambient temperature water outside to form warm water for the user's bathing. The water in the inner tank, with a temperature higher than the cutoff temperature, ensures that the temperature of the water mixed with the ambient temperature water outside will not be lower than the temperature required by the user for bathing (e.g., if the user requires 40 degrees Celsius warm water and the ambient temperature water is 20 degrees Celsius, the cutoff temperature can be controlled to be higher than 50 degrees Celsius). Of course, the determination of the cutoff temperature may also vary based on the user's water flow rate, the inlet water temperature of the water heater, etc., which will be explained in detail later.

[0091] The water heater needs to heat the water in the inner tank to the set temperature before each shower time, specifically, two hours before the shower time. The heating process can be automatic, such as the water heater monitoring user habits based on historical parameters to determine the shower time and heating in advance; or it can be manually turned on by the user.

[0092] The following is an explanation of a specific embodiment: If the initial heating setting temperature of the water heater is 75 degrees Celsius, and the cutoff temperature for user use is 50 degrees Celsius, when the water is turned on for the first shower, the hot water temperature in the inner tank continuously decreases until the user finishes showering. At this point, the actual minimum temperature in the inner tank is 60 degrees Celsius, which is higher than the cutoff temperature. Therefore, the heating setting temperature is adjusted to decrease, so that when the next shower is turned on, the initial water temperature in the inner tank decreases (e.g., from 75 degrees Celsius to 70 degrees Celsius). Since the total amount of hot water consumed during the user's shower remains essentially unchanged, the actual minimum temperature at the end of the shower decreases accordingly (e.g., from 60 degrees Celsius to 55 degrees Celsius). Conversely, if the actual minimum temperature is lower than the cutoff temperature, the heating setting temperature is increased to correspondingly raise the actual minimum temperature to meet the user's showering needs. Of course, the values ​​in the above embodiment are only used to illustrate specific implementation methods and are not intended to limit the implementation of this application. The relevant values ​​can be adjusted adaptively based on water heaters of different volumes and heating powers, as well as different users, to meet user needs.

[0093] In this embodiment, the current cycle is 24 hours. This means that the heating setting temperature will not change when the user uses the water heater multiple times within a day (24 hours). This avoids the problem of the water heater updating its heating setting temperature after the user showers in the morning, which may cause the user's showering needs to be met in the evening, thus ensuring a consistent user experience throughout the day. Of course, the cycle length can be adjusted adaptively based on user needs.

[0094] According to the water heater control method of this application embodiment, by determining the comparison relationship between the actual minimum temperature and the cutoff temperature during the current bathing water usage period, and adjusting and updating the heating setting temperature for the next bathing water usage period based on the comparison result, the actual minimum temperature after the user finishes using the water gradually approaches the cutoff temperature. After several updates to the heating setting temperature, the actual minimum temperature eventually fluctuates around the cutoff temperature, ensuring that the hot water in the inner tank meets the user's bathing needs while keeping the temperature of the remaining hot water lower, and consequently, the heating setting temperature of the water heater is lower, thereby reducing energy waste of the water heater.

[0095] In this embodiment, when comparing the actual minimum temperature and the cutoff temperature, the cutoff temperature can be increased by 2 degrees Celsius to compensate for the detection error of the temperature detector itself, ensuring that the water heater can still meet the user's bathing needs and improve the user experience even if there is a detection error.

[0096] In one embodiment, step 200 includes:

[0097] Step 210: Determine that the actual minimum temperature is higher than the cutoff temperature, and control the heating setting temperature to decrease in the next cycle.

[0098] The statement "actual temperature is higher than cutoff temperature" indicates that the hot water in the inner tank can meet the user's bathing needs, but there may be a problem of energy waste caused by the water heater being set too high. Therefore, the heating set temperature should be reduced to reduce energy waste.

[0099] In one embodiment, step 200 includes:

[0100] Step 220: Determine that the actual minimum temperature is lower than the cutoff temperature, and control the heating set temperature to rise in the next cycle.

[0101] The statement "the actual minimum temperature is lower than the cutoff temperature" indicates that the hot water in the water heater cannot meet the user's bathing needs at this time. The heating setting temperature needs to be increased to raise the initial water temperature of the inner tank for the next bathing period, so as to ensure that the warm water in contact with the user does not fluctuate in temperature during the bathing process.

[0102] According to one embodiment of this application, step 210 includes:

[0103] Step 211: Control the heating setting temperature to decrease the first set temperature difference.

[0104] Step 220 includes:

[0105] Step 221: Control the heating setting temperature to increase the second set temperature difference.

[0106] To illustrate the adjustment process, let's take the first shower water usage period as an example, where the actual minimum temperature is higher than the cutoff temperature, and the cycle time is one shower water usage period. Referring to Figure 6, along the X-axis time extension direction, the descending segment of the leftmost red line in the figure represents the water heater during the first shower water usage period. The water temperature inside the tank gradually decreases until it reaches the inflection point, which is the actual minimum temperature. At this point, the actual minimum temperature is higher than the cutoff temperature, so the heating setting temperature is lowered by the first set temperature difference (the height of the leftmost black line in the figure decreases). Subsequently, the red line rises, representing the period before the next shower water usage period. The water heater heats the water in the inner tank to the updated heating set temperature until it reaches that temperature, preparing for the second shower water usage period. It then continues to update the heating set temperature, gradually decreasing it in a gradient based on the first set temperature difference. This continues until the actual minimum temperature detected during one shower water usage period falls below the cutoff temperature. At this point, the heating set temperature is increased by the second set temperature difference (as shown by the rising height of the black line in the diagram). Ultimately, this ensures that the actual minimum temperature during each shower water usage period is higher than the cutoff temperature, meeting the user's showering needs, and that the heating set temperature is closer to the cutoff temperature, preventing energy waste.

[0107] The first set temperature difference is less than the second set temperature difference, meaning that the decrease in the heating set temperature is different from the increase in the heating set temperature. It is understandable that the temperature detector has a certain error when detecting the temperature (usually 1 to 2 degrees Celsius). If the decrease and increase temperature differences are controlled to be equal, the increase in the heating set temperature may not meet the user's bathing needs due to the error of the temperature detector. Therefore, ensuring that the second set temperature difference is greater than the first set temperature difference can effectively avoid the problem of not meeting the user's bathing needs due to the detection error of the temperature detector itself, and improve the user experience.

[0108] In this embodiment, the first set temperature difference is 5 degrees Celsius and the second set temperature difference is 10 degrees Celsius. Of course, the specific values ​​can be adjusted adaptively based on the actual situation. For example, if you want to adjust quickly, you can increase the temperature difference value, and if you want to improve the adjustment accuracy, you can decrease the temperature difference value. Of course, if a high-precision temperature detector is used, the first set temperature difference and the second set temperature difference can also be set to be equal.

[0109] According to one embodiment of this application, step 220 includes:

[0110] Step 222: Determine that the actual minimum temperature is lower than the cutoff temperature, and that the actual minimum temperature is lower than or equal to the inlet water temperature, and control the heating setting temperature to rise directly to the first set temperature; wherein, the first set temperature is the initial water temperature of the bathing water period set by the water heater at the factory.

[0111] The phrase "determining the actual minimum temperature is lower than or equal to the inlet water temperature" indicates that there is no hot water in the inner tank at this time, making the water inside the tank the same temperature as room temperature water, and the user cannot shower at all. This means that when the water heater is in use, as the heating set temperature is gradually reduced, if the reduced heating set temperature is too low, or if the user's demand for hot water suddenly increases during the current shower period, causing the water heater's hot water supply to be insufficient, the heating set temperature will be directly raised to the first set temperature to meet the user's next shower needs.

[0112] In this embodiment, the first set temperature is 75 degrees Celsius. Of course, users can adjust it according to their needs.

[0113] According to one embodiment of this application, the water heater control method further includes:

[0114] Step 300: Determine that the water heater is not in use for bathing, and control the water heater to maintain the water temperature in the inner tank within the range of 35 degrees Celsius to 50 degrees Celsius.

[0115] Among them, "determining that the water heater is in a non-bathing water use period" can be achieved by detecting changes in water temperature inside the tank (the hot water content remains unchanged when no water is used, and the water temperature inside the tank gradually decreases), changes in water flow (the water flow is 0 when no water is used), or by using historical parameters to count the time nodes when users bathe (e.g., if a user bathes between 8:00 and 8:30 every day, then the time outside of this period is considered a non-water use period).

[0116] Among them, "maintaining the water temperature inside the tank within the range of 35 degrees Celsius to 50 degrees Celsius" ensures that the water temperature inside the tank is always higher than that of room temperature water, which can meet the user's small-batch water needs (such as washing dishes and vegetables).

[0117] The "maintaining the water temperature inside the inner tank within the range of 35 degrees Celsius to 50 degrees Celsius" can be achieved by detecting the temperature with a temperature detector and controlling the heating component to heat the water inside the inner tank when the actual temperature is below 35 degrees Celsius.

[0118] Of course, the water temperature maintained during non-bathing periods can be set by the user based on their needs or by the water heater based on big data collection of general users' water usage habits.

[0119] According to one embodiment of this application, step 100 includes:

[0120] Step 110: Obtain the state characteristic parameters of the water inside the inner tank.

[0121] Among them, the state characteristic parameters are used to characterize the state of the water inside the inner tank, and can include water temperature, rate of temperature change per unit time, water flow rate, etc. Sensors (such as temperature sensors, flow sensors, etc.) can be set to detect different types of state characteristic parameters.

[0122] Step 120: Based on the state characteristic parameters reaching the set parameters, determine that the water heater is in the bathing water usage period.

[0123] Among them, in "reaching the set parameter based on state characteristic parameters", the set parameter can be a parameter set manually, such as the value of the set parameter based on the water flow or water temperature change rate when the user is bathing; of course, the set parameter can also be a set parameter obtained by statistically processing the state characteristic parameters of the water during multiple bathing periods based on the historical parameters of the water heater. The form of statistical processing can be the average of multiple state characteristic parameters during multiple bathing periods, or the maximum or minimum value of multiple state characteristic parameters, whichever is selected based on actual needs.

[0124] According to one embodiment of this application, the state characteristic parameters include at least one of the water cooling rate and the water flow rate, and the water outlet time; the setting parameters include at least one of the setting rate and the setting flow rate, and the setting rate corresponds to the cooling rate, the setting flow rate corresponds to the water flow rate, and the water outlet time corresponds to the setting water outlet time.

[0125] In one embodiment, step 120 includes:

[0126] Step 121: Determine that the cooling rate is greater than or equal to the set rate and the water output time is greater than or equal to the set water output time, and determine that the water heater is in the bathing water usage period.

[0127] As shown in Figure 6, the temperature of the inner tank (i.e., the water temperature in the inner tank) in the middle position of the figure continues to decrease, and the water flow signal (including high-frequency and low-frequency signals in the figure) is at the high-frequency signal. At this time, the water heater is in the water dispensing state. When it is determined that the cooling rate is greater than or equal to the set rate (the water temperature is lower during non-bathing periods, and the demand for hot water is less, so the cooling rate is smaller), and the duration of the high-frequency signal is greater than or equal to the set time (i.e., the water dispensing time is greater than or equal to the set time), it indicates that the user is using the water heater for bathing and is in the bathing period.

[0128] In this embodiment, as shown in the figure, the high-frequency signal may be discontinuous, corresponding to the situation where the water outlet may be opened and closed multiple times during the user's bathing water usage period. The water heater can accumulate the duration of multiple discontinuous high-frequency signals (if the interval between high-frequency signals is less than a certain threshold, it indicates that they are in the same bathing water usage period, where the threshold can be determined by the water heater based on historical parameters) to obtain the water output time.

[0129] In this embodiment, the occurrence of bathing water usage is monitored by the cooling rate. The cooling rate is also measured using a temperature detector. That is, only one temperature detector needs to be installed in the water heater to realize temperature detection and monitoring of bathing water usage. This effectively adapts to low-end electric water heater models with only one temperature sensor, reducing the cost of water heater modification or use.

[0130] In one embodiment, step 120 includes:

[0131] Step 122: Determine that the water flow rate is greater than or equal to the set flow rate and the water outlet time is greater than or equal to the set water outlet time, and determine that the water heater is in the bathing water usage period.

[0132] It is understandable that the water flow rate is lower during non-bathing periods. When the water flow rate is higher than the set flow rate during non-bathing periods (such as when a user suddenly needs a large amount of hot water to soak items), the water flow time is shorter than the set water flow time, so it will not be incorrectly judged as being in the bathing period.

[0133] In this embodiment, the water flow rate can be achieved by setting a flow detector at the water outlet.

[0134] According to one embodiment of this application, before step 100, the following is included:

[0135] Step 500: Obtain the historical parameters of the water heater, and calculate the cutoff temperature and the set temperature for one person's shower based on the historical parameters.

[0136] The temperature setting for a single user is the initial water temperature of the water heater used by a single user.

[0137] The "obtaining historical parameters of the water heater" function can be achieved by storing historical parameters of the water heater in a memory or in the cloud, and then analyzing and calculating the cutoff temperature and single-person shower setting temperature based on these historical parameters. The historical parameters can be calculated by integrating data from multiple shower periods to obtain an average value, and then using the average cutoff temperature and single-person shower setting temperature from these multiple shower periods as the evaluation criteria for the next shower period. Alternatively, it can be based on big data statistics obtained from the cloud to determine the cutoff temperature and single-person shower setting temperature for the corresponding type of water heater.

[0138] In this embodiment, the cutoff temperature for the next shower time and the set temperature for one person shower are dynamically updated by historical parameters, so that the water heater can effectively adapt to the user's needs and the heating set temperature is more reasonable, which helps to reduce the operating cost of the water heater.

[0139] In this embodiment, as shown in Figure 3, historical parameter analysis can include machine parameter learning and user habit learning. Machine parameter learning can statistically learn the water volume (i.e., the water output volume of the water heater) during the user's bathing water usage period. User habit learning can record water usage data of the water heater over multiple days (e.g., 7 days) in the form of water usage records. The water usage data can include the temperature of the water in the inner tank before and after water usage, the duration of water usage, etc., which can be used to determine whether the user is in a bathing water usage period or to update the criteria for determining bathing water usage periods.

[0140] Water heater control methods also include:

[0141] Step 600: Determine the comparison relationship between the heating setting temperature and the single-person shower setting temperature, and adjust and update the heating setting temperature of the water heater in the next cycle based on the comparison result.

[0142] The following is an explanation of a specific embodiment: For example, the initial heating setting temperature of the water heater is 75 degrees Celsius, the setting temperature for a single user's shower is 65 degrees Celsius, and the cutoff temperature is 50 degrees Celsius. At this point, the initial heating setting temperature is higher than the single-user shower setting temperature, allowing for downward adjustment. When the first shower period begins, the hot water temperature in the inner tank continuously decreases until the user finishes showering. At this point, the actual minimum temperature in the inner tank is 60 degrees Celsius, higher than the cutoff temperature. Therefore, the heating setting temperature is adjusted to decrease, so that when the next shower period begins, the initial water temperature in the inner tank decreases (e.g., from 75 degrees Celsius to 70 degrees Celsius). If the total hot water consumption during the user's shower remains essentially unchanged, the actual minimum temperature at the end of the shower decreases accordingly (e.g., from 60 degrees Celsius to 55 degrees Celsius). Conversely, when the actual minimum temperature is lower than the cutoff temperature, the heating setting temperature is increased to correspondingly raise the actual minimum temperature to meet the user's showering needs.

[0143] When the heating set temperature gradually decreases over multiple shower periods (e.g., from 75 degrees Celsius to 60 degrees Celsius in 5-degree increments), and the heating set temperature is lower than the single-person shower set temperature, it cannot meet the user's shower needs. In this case, there is no need to determine the relationship between the actual minimum temperature and the cutoff temperature; the heating set temperature is directly updated to the single-person shower set temperature to ensure the user's shower needs are met.

[0144] Of course, the values ​​in the above embodiments are only used to illustrate the specific implementation methods and are not intended to limit the implementation methods of this application. The relevant values ​​can be adjusted adaptively based on water heaters with different volumes and heating powers, as well as different users, to meet user needs.

[0145] In this embodiment, the heating setting temperature is adjusted by comparing the heating setting temperature with the single-person washing setting temperature to avoid the heating setting temperature from continuously decreasing and to ensure that the heating setting temperature always fluctuates around the single-person washing setting temperature, thereby meeting the user's bathing needs and improving the user experience.

[0146] In one embodiment, step 600 includes:

[0147] Step 610: If the actual minimum temperature is higher than the cutoff temperature, determine that the heating setting temperature is higher than the single-person washing setting temperature, and control the heating setting temperature to decrease.

[0148] The statement "the heating temperature is set higher than the temperature set for one person to shower" indicates that the water temperature in the inner tank can meet the needs of one person's shower while having some room for temperature reduction.

[0149] The statement "actual temperature is higher than cutoff temperature" indicates that the hot water in the inner tank can meet the user's bathing needs, but there may be a problem of energy waste caused by the water heater being set too high. Therefore, the heating set temperature should be reduced to reduce energy waste.

[0150] In one embodiment, step 600 includes:

[0151] Step 620: Determine that the heating setting temperature is lower than the single-person wash setting temperature, and control the heating setting temperature to rise to the single-person wash setting temperature.

[0152] The message "Heating setting temperature is lower than the single-person shower setting temperature" indicates that the hot water in the water heater cannot meet the user's bathing needs at this time, and the heating setting temperature needs to be increased to raise the initial water temperature of the inner tank for the next shower period.

[0153] According to one embodiment of this application, historical parameters include inlet water temperature, water heater heating power, inlet water flow rate, water consumption per person, volume of the water heater's inner tank, and mixing water temperature.

[0154] Step 500 includes:

[0155] Step 510: Obtain historical parameters and calculate the cutoff temperature based on inlet water temperature, heating power, and inlet water flow rate.

[0156] The inlet water temperature can be controlled by installing a temperature detector at the inlet of the water heater, and the inlet water flow rate can be controlled by installing a flow detector at the inlet.

[0157] Among them, based on the different usage habits of different users (such as different water flow rates leading to different inlet flow rates) or the different inlet water temperatures due to different ambient water temperatures in the current environment, the cutoff temperature is dynamically calculated to effectively ensure that the cutoff temperature meets the current user's usage needs in the current environment.

[0158] Step 520: Calculate the set temperature for one person's shower based on the water consumption for one person's shower, the volume of the water heater's inner tank, the mixing water temperature, the inlet water temperature, and the cut-off temperature. The water consumption for one person's shower is obtained by statistically analyzing the water consumption of the user during several showers based on historical parameters. For example, the average water consumption during multiple shower periods can be taken, or the water consumption of the previous period can be used. The mixing water temperature is the temperature of the water that the user comes into contact with during showering.

[0159] The mixing temperature can be detected by setting a temperature detector in the mixing valve, and the water consumption for one person in the current cycle can be calculated by setting a flow detector at the water outlet and accumulating the water consumption for one person during the bathing period based on time.

[0160] As mentioned earlier, the single-person shower setting temperature is also dynamically calculated based on historical parameters to ensure that it meets the user's current usage needs in the current environment. Of course, the single-person shower setting temperature of this water heater can also be the average value of the single-person shower setting temperature corresponding to this type of water heater based on big data statistics. In this case, there is no need to install a detector for testing, thus reducing the manufacturing cost of the water heater.

[0161] According to one embodiment of this application, the cutoff temperature is calculated in step 510 based on the following formula:

[0162] T_cutoff = P / (f×70) + T_inflow;

[0163] Where T_cutoff is the cutoff temperature, P is the heating power of the water heater, f is the inlet water flow rate, and T_inlet water is the inlet water temperature;

[0164] In this embodiment, the formula can be derived through the following process:

[0165] Formula 1: Q=m×c×ΔT;

[0166] Where Q is the total heat, m is the total mass of the water discharged, c is the specific heat capacity of water, and ΔT is the temperature difference;

[0167] The formula for converting heat per unit time to heating power is:

[0168] Formula 2; P = Q / t; where P is the heating power of the water heater, Q is the total heat, and t is the heating time;

[0169] Substituting Formula 2 into Formula 1, we can obtain the conversion relationship between power and temperature difference per unit heating time as follows:

[0170] Formula 3: P = m × c × ΔT; where P is the heating power, m is the total mass of the water output, c is the specific heat capacity of water, and ΔT is the temperature difference.

[0171] The density calculation formula is: m = ρV, where m is the total mass of the discharged water, ρ is the density of water, and V is the volume of the discharged water.

[0172] The density of water is 1.0 × 1000 kg / m³, and substituting the density calculation formula into Formula 3 yields:

[0173] Formula 4: ΔT=P / (Vc), where ΔT is the temperature difference, P is the heating power of the water heater, c is the specific heat capacity of water, and V is the outlet water volume.

[0174] Adding the inflow rate T to the cutoff rate ΔT yields the cutoff rate T:

[0175] Formula 5: T_cutoff = P / (Vc) + T_inlet; where T_cutoff is the cutoff temperature, P is the heating power of the water heater, V is the outlet water volume, and T_inlet is the inlet water temperature.

[0176] Furthermore, from the flow rate and volume conversion formula, we know that: V = f × Δt, where V is the outlet water volume, f is the inlet water flow rate, and Δt is the unit time. Substituting these values ​​along with the specific heat capacity of water into Formula 5, we can obtain the calculation formula for the cutoff temperature in this application:

[0177] T_cutoff = P / (f×70) + T_inflow;

[0178] Where T_cutoff is the cutoff temperature, P is the heating power of the water heater, f is the inlet water flow rate, and T_inlet water is the inlet water temperature.

[0179] In step 520, the temperature setting for a single wash is calculated based on the following formula:

[0180] T_one_wash = M × (T_mixed_water - T_in_water) / V + T_stop;

[0181] Where T is the set temperature for a single person's wash, M is the water volume required to meet the needs of a single user's wash, T is the mixing temperature, T is the inlet temperature, V is the outlet volume, and T is the cutoff temperature.

[0182] A control device 600 for a water heater according to a second aspect embodiment of this application includes:

[0183] The acquisition module 610 is used to determine the bathing water usage period of the water heater in the current cycle and to acquire the actual lowest temperature inside the inner tank of the water heater.

[0184] The control module 620 is used to determine the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjust and update the heating setting temperature of the water heater in the next cycle based on the comparison result.

[0185] The cutoff temperature is the minimum temperature at which the water in the inner tank meets the user's needs; the heating setting temperature is the initial water temperature during the bathing period.

[0186] The technical effects of the water heater control device according to the embodiments of this application correspond to the technical effects of the water heater control method of the first aspect embodiment, and will not be repeated here.

[0187] A water heater according to a third aspect of the invention includes an inner tank, a temperature detector, a heating element, and a controller. The inner tank has a liquid storage chamber. At least one temperature detector is adapted to detect the water temperature in the liquid storage chamber. The heating element is adapted to heat the water in the liquid storage chamber. The controller is connected to the temperature detector and the heating element and is used to perform the above-described control method for the water heater.

[0188] Figure 7 illustrates a schematic diagram of the physical structure of an electronic device. As shown in Figure 7, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, communication interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions in the memory 830 to execute the following methods: determining the current bathing water usage period of the water heater; obtaining the actual minimum temperature inside the water heater's tank; determining the comparison relationship between the actual minimum temperature and the cutoff temperature; and adjusting and updating the heating setting temperature of the water heater for the next period based on the comparison result. The cutoff temperature is the minimum temperature of the water in the tank that meets the user's needs; the heating setting temperature is the initial water temperature during the bathing water usage period.

[0189] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to related technologies, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0190] On the other hand, this application discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by the computer, the computer can execute the methods provided in the above-described method embodiments, such as: determining the bathing water usage period of the water heater in the current cycle, obtaining the actual minimum temperature inside the inner tank of the water heater; determining the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjusting and updating the heating setting temperature of the water heater in the next cycle based on the comparison result; wherein, the cutoff temperature is the minimum temperature of the water in the inner tank that meets the user's needs; and the heating setting temperature is the initial water temperature during the bathing water usage period.

[0191] In another aspect, embodiments of this application also provide a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program is implemented to perform the transmission methods provided in the above embodiments, such as including: determining the bathing water usage period of the water heater in the current cycle, obtaining the actual minimum temperature inside the inner tank of the water heater; determining the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjusting and updating the heating setting temperature of the water heater in the next cycle based on the comparison result; wherein, the cutoff temperature is the minimum temperature of the water in the inner tank that meets the user's needs; and the heating setting temperature is the initial water temperature during the bathing water usage period.

[0192] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0193] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of software products. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0194] Finally, it should be noted that the above embodiments are for illustrative purposes only and are not intended to limit the scope of this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the scope of the technical solutions of this application and should be covered by the scope of the claims of this application.

Claims

1. A method for controlling a water heater, comprising: Determine the current bathing water usage period of the water heater and obtain the actual minimum temperature inside the inner tank of the water heater; wherein, the actual minimum temperature is the temperature inside the inner tank when the water in the inner tank stops heating during the current bathing water usage period, and the hot water in the inner tank gradually decreases as the user bathes until the user finishes bathing and the hot water stops flowing out of the inner tank. Determine the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjust and update the heating setting temperature of the water heater in the next cycle based on the comparison result; The cutoff temperature is the minimum temperature at which the water in the inner tank meets the user's needs. The temperature of the warm water formed by mixing water above the cutoff temperature with ambient temperature water outside is greater than or equal to the temperature required by the user for bathing. The heating setting temperature is the initial water temperature during the bathing water usage period.

2. The control method for a water heater according to claim 1, wherein, The process of determining the comparison between the actual minimum temperature and the cutoff temperature, and adjusting and updating the heating setting temperature of the water heater for the next cycle based on the comparison result, includes: If the actual minimum temperature is determined to be higher than the cutoff temperature, the heating set temperature is controlled to decrease in the next cycle. or, If the actual minimum temperature is determined to be lower than the cutoff temperature, the heating set temperature is controlled to increase in the next cycle.

3. The control method for a water heater according to claim 2, wherein, The step of determining that the actual minimum temperature is higher than the cutoff temperature and controlling the heating set temperature to decrease in the next cycle includes: Control the heating setting temperature to decrease by a first set temperature difference; The step of determining that the actual minimum temperature is lower than the cutoff temperature and controlling the heating set temperature to increase in the next cycle includes: The heating setting temperature is controlled to rise by a second set temperature difference, wherein the first set temperature difference is less than the second set temperature difference.

4. The control method for a water heater according to claim 2, wherein, The step of determining that the actual minimum temperature is lower than the cutoff temperature and controlling the heating set temperature to increase in the next cycle includes: If the actual minimum temperature is determined to be lower than the cutoff temperature, and the actual minimum temperature is lower than or equal to the inlet water temperature, the heating setting temperature is controlled to rise directly to the first set temperature. The first set temperature is the initial water temperature for the bathing water usage period set at the factory of the water heater.

5. The control method for a water heater according to any one of claims 1 to 4, further comprising: When the water heater is not in use for bathing, control the water heater to maintain the water temperature in the inner tank within the range of 35 degrees Celsius to 50 degrees Celsius.

6. The control method for a water heater according to any one of claims 1 to 5, wherein, Determining that the water heater is in the current cycle's bathing water usage period and obtaining the actual lowest temperature inside the water heater's inner tank includes: Obtain the state characteristic parameters of the water inside the inner tank; Based on the state characteristic parameters reaching the set parameters, it is determined that the water heater is in the bathing water usage period.

7. The control method for a water heater according to claim 6, wherein, The state characteristic parameters include at least one of the water cooling rate and the outflow rate, as well as the outflow time. The setting parameters include at least one of a setting rate and a setting flow rate, and a setting water outlet time, wherein the setting rate corresponds to the cooling rate, the setting flow rate corresponds to the water outlet flow rate, and the water outlet time corresponds to the setting water outlet time; The step of determining that the water heater is in the bathing water usage period based on the state characteristic parameters reaching the set parameters includes: If the cooling rate is greater than or equal to the set rate, and the water outlet time is greater than or equal to the set water outlet time, then the water heater is determined to be in the bathing water usage period. And / or, If the water flow rate is greater than or equal to the set flow rate and the water outlet time is greater than or equal to the set water outlet time, then the water heater is determined to be in the bathing water usage period.

8. The control method for a water heater according to any one of claims 1 to 7, wherein, Before determining that the water heater is in the current cycle's bathing water usage period and obtaining the actual lowest temperature inside the water heater's inner tank, the method further includes: The historical parameters of the water heater are obtained, and the cutoff temperature and the single-person shower setting temperature are calculated based on the historical parameters, wherein the single-person shower setting temperature is the initial water temperature of the water heater that meets the needs of a single user. The control method for the water heater also includes: The comparison relationship between the heating setting temperature and the single-person shower setting temperature is determined, and the heating setting temperature of the water heater is adjusted and updated in the next cycle based on the comparison result.

9. The control method for a water heater according to claim 8, wherein, The step of determining the comparison relationship between the heating setting temperature and the single-person shower setting temperature, and adjusting and updating the heating setting temperature of the water heater in the next cycle based on the comparison result, includes: If the actual minimum temperature is higher than the cutoff temperature, and the heating set temperature is determined to be higher than the single-person wash set temperature, then the heating set temperature is controlled to decrease. or, If the heating setting temperature is determined to be lower than the single-person wash setting temperature, the heating setting temperature is controlled to rise to the single-person wash setting temperature.

10. The control method for a water heater according to claim 8 or 9, wherein, The historical parameters include inlet water temperature, heating power of the water heater, inlet water flow rate, water consumption per person, volume of the inner tank of the water heater, and mixing water temperature; The step of obtaining historical parameters of the water heater and calculating the cutoff temperature and single-person shower setting temperature based on the historical parameters includes: The historical parameters are obtained, and the cutoff temperature is calculated based on the inlet water temperature, the heating power, and the inlet water flow rate. The set temperature for one person's shower is calculated based on the water consumption for one person's shower, the volume of the inner tank of the water heater, the mixing temperature, the inlet water temperature, and the cut-off temperature; wherein, the water consumption for one person's shower is obtained by statistically analyzing the water consumption of the user during several showers based on historical parameters of the water heater; the mixing temperature is the temperature of the water that the user comes into contact with during showering.

11. The control method for a water heater according to claim 10, wherein, The cutoff temperature is calculated based on the following formula: T_cutoff = P / (f×70) + T_inlet; Where T_cutoff is the cutoff temperature, P is the heating power of the water heater, f is the inlet water flow rate, and T_inlet water is the inlet water temperature; The temperature setting for a single-person wash is calculated based on the following formula: T_one_wash = M × (T_mixed_water - T_in_water) / V + T_stop; Where T is the set temperature for a single person's wash, M is the water volume required to meet the needs of a single user's wash, T is the mixing temperature, T is the inlet temperature, V is the outlet volume, and T is the cutoff temperature.

12. A control device for a water heater, comprising: The acquisition module is used to determine the current bathing water usage period of the water heater and to acquire the actual lowest temperature inside the inner tank of the water heater. The control module is used to determine the comparison relationship between the actual minimum temperature and the cutoff temperature, and adjust and update the heating setting temperature of the water heater in the next cycle based on the comparison result. The cutoff temperature is the minimum temperature at which the water in the inner tank meets the user's usage requirements; the heating setting temperature is the initial water temperature during the bathing water usage period.

13. A water heater, comprising: The inner liner forms a liquid storage cavity; At least one temperature detector is provided to detect the water temperature in the liquid storage chamber; Heating assembly, adapted to heat the water in the liquid storage chamber; A controller, connected to the temperature detector and the heating assembly, is used to execute the control method of the water heater according to any one of claims 1 to 11.

14. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein, When the processor executes the program, it implements the control method for the water heater as described in any one of claims 1 to 11.

15. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein, When the computer program is executed by the processor, it implements the control method for the water heater as described in any one of claims 1 to 11.

16. A computer program product comprising a computer program, wherein, When the computer program is executed by the processor, it implements the control method for the water heater as described in any one of claims 1 to 11.

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