CN110398065B

CN110398065B - Water heater, heating control method thereof and computer-readable storage medium

Info

Publication number: CN110398065B
Application number: CN201910608058.7A
Authority: CN
Inventors: 申勇兵; 谢亚光; 王明
Original assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2022-08-26
Anticipated expiration: 2039-07-05
Also published as: CN110398065A

Abstract

The invention discloses a heating control method of a water heater, which comprises the following steps: determining the water use reliability corresponding to a user in a first time period, and determining the target water consumption according to the water use reliability; determining target operation parameters corresponding to the water heater according to the target water consumption; and controlling the water heater to operate according to the target operation parameter in the first time period, and/or controlling the water heater to operate before the first time period according to the target operation parameter. The invention also discloses a water heater and a computer readable storage medium. The heating control of the water heater is reasonable.

Description

Water heater, heating control method thereof and computer-readable storage medium

Technical Field

The invention relates to the technical field of water heaters, in particular to a water heater, a heating control method thereof and a computer readable storage medium.

Background

At present, a water heater has become a popular household appliance.

When the water heater is used, the temperature is set firstly, and when the heating device of the water heater heats water in the inner container to the set temperature, the heating device is closed. When the water in the inner container drops to a threshold value, the heating device is started to heat the water temperature in the inner container to the set temperature again. The water heater circularly heats the water in the inner container according to the mode, so that the hot water provided by the water heater for a user is too little or too much, and the heating control of the water heater is unreasonable.

Disclosure of Invention

The invention mainly aims to provide a water heater, a heating control method thereof and a computer readable storage medium, and aims to solve the problem of unreasonable heating control of the water heater.

In order to achieve the above object, the present invention provides a heating control method for a water heater, including the steps of:

determining the water use reliability corresponding to a user in a first time period, and determining the target water consumption according to the water use reliability;

determining target operation parameters corresponding to the water heater according to the target water consumption;

and controlling the water heater to operate according to the target operation parameter in the first time period, and/or controlling the water heater to operate before the first time period according to the target operation parameter.

In one embodiment, the step of determining the reliability of water usage corresponding to the user in the first time period includes:

determining the total number of first time periods and the number of first time periods with water in a data acquisition cycle, wherein the dates of the first time periods in the data acquisition cycle are different;

and determining the water use reliability corresponding to the user in the first time period according to the number of the first time periods with water use and the total number of the first time periods.

In an embodiment, the step of determining the water use reliability corresponding to the first time period for the user according to the number of the first time periods with water use and the total number of the first time periods comprises:

calculating a first ratio between the number of first time periods with water usage and the total number of first time periods;

and determining the water use reliability of the user in a first time period according to the first ratio.

In one embodiment, the step of determining the reliability of water usage of the user for the first period of time according to the first ratio comprises:

determining a second time period earlier than the first time period, wherein the first time period and the second time period are on the same date, and the second time period comprises one or more sub-time periods;

calculating a second ratio between the number of sub-periods with water usage and the total number of sub-periods in the data acquisition cycle;

and carrying out weighted calculation on the first ratio and each second ratio so as to determine the water use reliability of the user in a first time period.

determining the total number of first time periods and the number of first time periods with water in various data acquisition cycles, wherein the time lengths of the various data acquisition cycles are different;

calculating a third ratio between the number of first time periods having water usage in each type of the data acquisition cycle and the total number of first time periods;

and determining the maximum third ratio as the water use reliability corresponding to the user in the first time period.

In one embodiment, the step of determining the target water usage based on the water usage reliability comprises:

determining a reliability interval where the water use reliability is located, and determining a current water use grade according to the reliability interval, wherein the higher the water use reliability is, the lower the current water use grade is;

and determining the target water consumption according to the current water consumption grade.

In one embodiment, the step of determining a target water usage based on the current water usage level comprises:

determining the current water usage level to be equal to a preset level, and determining the historical maximum water usage amount corresponding to the user in a first time period as a target water usage amount;

when the current water consumption level is determined to be smaller than a preset level, determining the maximum water consumption of a user in a first time period in a target data acquisition cycle as a target water consumption, wherein the water consumption reliability of the first time period in the target data acquisition cycle is higher than the water consumption reliability of the first time period in other data acquisition cycles;

and when the current water usage level is determined to be greater than a preset level, increasing the water consumption of a target water usage level as a target water consumption, wherein the target water usage level is lower than the current water usage level and is different from the current water usage level by one level.

In an embodiment, the target operation parameter includes at least one of a target set temperature of the water heater, a parameter corresponding to a target heating mode of the water heater, and a parameter corresponding to an advanced heating time period of the water heater.

In order to achieve the above object, the present invention further provides a water heater, which includes a memory, a processor, and a heating control program of the water heater stored in the memory and executable on the processor, wherein the heating control program of the water heater, when executed by the processor, implements the steps of the heating control method of the water heater as described above.

To achieve the above object, the present invention also provides a computer-readable storage medium storing a heating control program of a water heater, which when executed by a processor, implements the steps of the heating control method of the water heater as described above.

According to the water heater, the heating control method and the computer readable storage medium, the water heater determines the water use reliability of a user in a first time period, and determines the target water use amount of the user in the first time period according to the water use reliability, so that the water heater determines the target operation parameter of the water heater according to the target water use amount, and further controls the water heater to operate according to the target operation parameter in the first time period, or controls the water heater to operate in advance according to the target operation parameter before the first time period; the water use reliability of the user in the first time period can represent the water use reliability of the user in the time period, so that the water heater can accurately determine the water use amount of the user in the time period according to the water use reliability, a proper amount of hot water can be provided for the user, excessive or insufficient hot water provided by the water heater is avoided, and the heating control of the water heater is reasonable.

Drawings

FIG. 1 is a schematic diagram of a hardware structure of a water heater according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart illustrating a heating control method of a water heater according to an embodiment of the present invention;

FIG. 3 is a detailed flowchart of the step S100 in FIG. 2 for determining the water usage reliability of the user during the first time period;

FIG. 4 is a detailed flowchart of step S120 in FIG. 3;

fig. 5 is another detailed flowchart of the step S100 in fig. 2 for determining the water usage reliability corresponding to the user in the first time period.

The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The main solution of the embodiment of the invention is as follows: determining the water use reliability corresponding to a user in a first time period, and determining the target water consumption according to the water use reliability; determining target operation parameters corresponding to the water heater according to the target water consumption; and controlling the water heater to operate according to the target operation parameter in the first time period, and/or controlling the water heater to operate before the first time period according to the target operation parameter.

The water use reliability of the user in the first time period can represent the water use reliability of the user in the time period, so that the water heater can accurately determine the water use amount of the user in the time period according to the water use reliability, a proper amount of hot water can be provided for the user, excessive or insufficient hot water provided by the water heater is avoided, and the heating control of the water heater is reasonable.

As one implementation, the water heater may be as shown in fig. 1.

The embodiment of the invention relates to a water heater, which comprises: a processor 101, e.g. a CPU, a memory 102, a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.

The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a heating control program of a water heater may be included in the memory 103 as a kind of computer storage medium; and the processor 101 may be configured to call the heating control program of the water heater stored in the memory 102 and perform the following operations:

Based on the hardware architecture of the water heater, the embodiment of the heating control method of the water heater is provided.

Referring to fig. 2, fig. 2 is a diagram of an embodiment of a heating control method of a water heater according to the present invention, the heating control method of the water heater includes the following steps:

step S100, determining the water use reliability corresponding to a first time period of a user, and determining target water use amount according to the water use reliability;

in this embodiment, the water heater may determine a water usage reliability of the user over a time period, the water usage reliability characterizing a probability of the user using the water heater over the time period, the higher the water usage reliability, the greater the probability of the user using the water heater over the time period. The water use reliability corresponding to the first time period can be determined according to the water use times of the user in the first time period, and the water use reliability is higher when the water use times are higher when the number of the first time periods on different dates is fixed.

The water heater can determine the target water consumption of the user in the time period through the water use reliability corresponding to the first time period. Specifically, the water heater divides the reliability of water usage into five reliability intervals, for example, [ 100%, 85% ], (85%, 70% ], (75%, 55% ], (55%, 40% ]), and (40%, 0% ] five intervals, each of the reliability intervals corresponds to one water usage level, for example, [ 100%, 85% ] corresponds to a water usage level of 1 grade, (85%, 70% ] corresponds to a water usage level of 2 grade, (75%, 55% ] corresponds to a water usage level of 3 grade, (55%, 40% ] corresponds to a water usage level of 4 grade, (40%, 0% ] corresponds to a water usage level of 5 grade, it is understood that the higher the reliability of water usage is, the lower the water usage level is, each water usage level has a corresponding water usage amount, the water heater determines the reliability interval in which the reliability of water usage is located after determining the reliability of water usage, and further determines the water usage level according to the reliability interval, thereby using the water consumption corresponding to the water consumption grade as the target water consumption.

Step S200, determining target operation parameters corresponding to the water heater according to the target water consumption;

and step S300, controlling the water heater to operate according to the target operation parameters in the first time period, and/or controlling the water heater to operate before the first time period according to the target operation parameters.

After the target water consumption of the water heater is determined, the target operation parameters of the water heater can be determined according to the target water consumption of the water heater. The target operation parameter comprises at least one of a target set temperature, a parameter corresponding to the advanced heating time and a parameter corresponding to the heating mode of the water heater. The heating modes include a water discharge heating mode and a water discharge non-heating mode. In different heating modes, the set temperature of the water heater is different, and the heating time length in advance is different. For example, the set temperature of the water heater in the discharge heating mode is greater than the set temperature of the discharge non-heating mode, and the discharge non-heating mode requires pre-heating of the water heater, while the discharge heating mode does not necessarily require pre-heating of the water heater. The parameters corresponding to the advanced heating duration can be the heating duration, the heating power and the like of the water heater, and the parameters corresponding to the heating mode can be the start and stop of each heating device in the water heater and the like.

When the target water consumption of a user is small, the water heater can adopt a water discharging non-heating mode as a target heating mode, at the moment, the water heater determines a set temperature according to the target water consumption, and then determines the heating rate of the heating device to water, so that the heating time length in advance is determined according to the set temperature and the heating rate.

When the target water consumption of a user is large, the water heater can adopt a water discharging heating mode as a target heating mode, and at the moment, the water heater determines a set temperature according to the target water consumption and the inlet water temperature so as to control the operation of the water heater.

It should be noted that, when the target operation parameter includes the advanced heating time, the water heater determines an operation time point of the water heater according to the advanced heating time, and when the current time point reaches the operation time point, the water heater is controlled to operate, so that the water heater operates according to the target operation parameter before the first time period. When the target operation parameter does not include the advanced heating time, the water heater is operated in the first time period according to the target operation parameter, or is operated in advance of the first time period and is operated in the first time period.

In the technical scheme provided by the embodiment, the water heater determines the water use reliability of a user in a first time period, and determines the target water consumption of the user in the first time period according to the water use reliability, so that the water heater determines the target operation parameter of the water heater according to the target water consumption, and further controls the water heater to operate according to the target operation parameter in the first time period, or controls the water heater to operate in advance according to the target operation parameter before the time period; the water use reliability of the user in the first time period can represent the water use reliability of the user in the time period, so that the water heater can accurately determine the water use amount of the user in the time period according to the water use reliability, a proper amount of hot water can be provided for the user, excessive or insufficient hot water provided by the water heater is avoided, and the heating control of the water heater is reasonable.

Referring to fig. 3, fig. 3 is a detailed flowchart of the step S100 in fig. 2 for determining the water usage reliability corresponding to the user in the first time period, that is, the step S100 includes:

step S110, determining the total number of first time periods in a data acquisition cycle and the number of first time periods with water, wherein the dates of the first time periods in the data acquisition cycle are different;

and step S120, determining the water use reliability corresponding to the first time period of the user according to the number of the first time periods with water use and the total number of the first time periods.

In this embodiment, the water heater is provided with a data acquisition cycle, and the duration of the data acquisition cycle may be the last week, two weeks, three weeks, or the like. The water heater determines the total number of the same first time periods on different dates in the data acquisition cycle, for example, when the time length of the data acquisition cycle is one week, then the data acquisition cycle has 7 first time periods from 9 am to 10 am, that is, the total number of the first time periods is 7. When the water heater detects that a user uses the water heater, the time period of using the water heater is related to the water consumption of the user, so that the number of the first time periods with water consumption is determined after the water heater obtains a plurality of first time periods.

The water heater may determine the water usage reliability based on the number of first time periods with water usage and the total number of first time periods. For example, the mapping relationship among the number of the first time periods, the total number of the first time periods, and the water usage reliability is stored in the water heater, and after the total number of the first time periods and the number of the first time periods with water are determined, the water usage reliability of the water heater can be determined according to the mapping relationship, the total number of the first time periods, and the number of the first time periods with water.

In the technical scheme provided by the embodiment, the water heater determines the total number of the first time periods with different dates and the number of the first time periods with water consumption in the data acquisition period so as to use the water reliability according to the total number of the first time periods and the number of the first time periods with water consumption, so that the water heater can accurately determine the target water consumption of the user in the first time period according to the water reliability.

Referring to fig. 4, fig. 4 is a detailed flowchart of step S120 in fig. 3, where step S120 includes:

step S121, calculating a first ratio between the number of first time periods with water usage and the total number of the first time periods;

and step S122, determining the water use reliability of the user in a first time period according to the first ratio.

In this embodiment, the water heater calculates a first ratio between the number of the first time periods with water usage and the total number of the first time periods, the first ratio is indicative of the frequency of water usage of the user in the first time periods, and the larger the first ratio is, the higher the frequency of water usage of the user in the first time periods is. In this regard, the first ratio may be directly used as the water usage reliability to characterize the reliability of the user's water usage during the time period.

In one embodiment, the water heater is divided into a plurality of time periods in one day, and after a user uses the water heater in one time period, the probability that the user uses hot water in the next time period is influenced. For example, if the user takes a bath at 8 pm to 9 pm and goes to sleep, then the probability of the user using water decreases from 9 pm to 10 pm, from 10 pm to 11 pm, and from 11 pm to 12 pm, so that the influence of the user using water in the time period before 9 pm to 10 pm needs to be considered when calculating 9 pm to 10 pm.

For this, the water heater determines a second time period earlier than the first time period, the date of the second time period is different from that of the first time period, the second time period comprises one or more sub-time periods, for example, when the first time period is 1:00am-2:00am, the second time period is 0:00am-1:00am, the second time period only contains one sub-time period, and the sub-time period is 0:00am-1:00 am; the first time period is 3:00am-4:00am, then the second time period is 0:00am-3:00am, and the second time period includes three sub-time periods, 0:00am-1:00am, 1:00am-2:00am, 2:00am-3:00am, respectively.

The water heater calculates the total number of the sub-time periods in the data acquisition cycle and the number of the sub-time periods with water consumption, so that a second ratio is obtained according to the number of the sub-time periods with water consumption and the total number of the sub-time periods, and if the second time period comprises a plurality of sub-time periods, a plurality of second ratios exist.

And after the second ratio is obtained, setting corresponding weights for each sub-time period and the first time period. Since the influence of the earlier sub-period on the first period is smaller, the earlier sub-period has a smaller weight, i.e., the first period has the largest weight. And the water heater performs weighted calculation on each second ratio and the first ratio to obtain a target ratio, wherein the target ratio is the water use reliability of the user in the first time period.

In the technical scheme provided by the embodiment, the water reliability of the user in the first time period is accurately determined according to the influence of the second time period earlier than the first time period on the first time period.

Referring to fig. 5, fig. 5 is another detailed flowchart of the step S100 in fig. 2 for determining the water usage reliability corresponding to the user in the first time period, where the step S100 includes:

step S130, determining the total number of first time periods in various data acquisition cycles and the number of the first time periods with water, wherein the time lengths of the various data acquisition cycles are different;

step S140, calculating a third ratio between the number of the first time periods with water in each type of data acquisition cycle and the total number of the first time periods;

step S150, determining the maximum third ratio as the water usage reliability corresponding to the first time period for the user.

In the embodiment, the user has a large number of times of historical water consumption for the water heater in a certain time period, and has a small number of times of historical water consumption for the water heater in another time period, and multiple times of water consumption of the user in one time period are recorded as the times of one-time historical book consumption. At this time, when the water heater performs statistics on the water use reliability, the water use reliability of the user in the time period is inaccurate due to the difference of the user, that is, the water use reliability of the user in the time period is lower than the actual water use reliability.

In this regard, the water heater is provided with a plurality of data acquisition cycles, and the time lengths of the data acquisition cycles are different, for example, the time length is one week, the time length is two weeks, the time length is three weeks, and the like. The last day of the data acquisition cycle is the same day, and it can be understood that the data acquired in the data acquisition cycle is updated along with the lapse of time, for example, the data acquisition cycle has a time length of one week, if the date of the first time period is 6 months and 8 days, the day with the earliest time in the data acquisition cycle is No. 6 months and 1, and the schedule of the first time period is changed to No. 6 months and 9 days, the day with the earliest time in the data acquisition cycle is updated to No. 6 months and 2, that is, the water heater replaces the water usage parameter acquired in No. 6 months and 9 days with the water usage parameter acquired in No. 6 months and 1 days.

The water heater calculates the total number of the first time periods in each type of data acquisition period and the number of the first time periods with water, and the third ratio corresponding to the data acquisition period is obtained by dividing the number of the first time periods with water by the total number of the first time periods. Therefore, the water heater calculates to obtain a plurality of third ratios, and then the maximum third ratio is used as the water use reliability corresponding to the user in the first time period.

In the embodiment, a plurality of data acquisition cycles are set, so that the corresponding water use reliability of a user in each data acquisition cycle is sequentially calculated, and the maximum water use reliability is used as the water use reliability of the user in the first time period, so that the problem that the water use reliability determined by a water heater is inaccurate when the user goes out is solved.

In one embodiment, the water heater determines the current water usage level according to the water usage reliability of the user in the first time period, so that the target water usage amount corresponding to the user in the first time period is determined according to the current water usage level.

Specifically, when the water consumption level is 1 level or 2 levels, the water heater can accurately determine the target water consumption of the user in the time period. In contrast, the water heater takes the data acquisition cycle with the maximum water use reliability as the target data acquisition cycle, so that the maximum water use of the user in the first time period in the target data acquisition cycle is determined as the water use corresponding to the water reliability level 1 and the water use corresponding to the water reliability level 2.

When the water consumption level of the user in the first time period is 3 grades, the water consumption of the user in the time period is accurately determined by the water heater. In this regard, the maximum water usage of the user during the first time period may be used as the water usage corresponding to the water usage reliability level 3.

When the water consumption level of the user in the first time period is 4 grades, the water consumption of the user in the time period cannot be accurately determined by the water heater. And adding a preset water quantity to the water quantity corresponding to the water grade 3, wherein the preset water quantity is the redundancy quantity, and the water quantity corresponding to the water grade 4 is obtained.

And when the water consumption level is 5, the water heater basically cannot determine the water consumption of the user in the first time period, but the user still has the possibility of water consumption, and therefore the water consumption corresponding to the water consumption level 5 can be obtained by adding the water consumption of the user corresponding to the water consumption level 4 to the preset water consumption.

The above is merely an exemplary list of the water consumption corresponding to the water usage level, and the water heater can be modified appropriately according to the actual water usage condition of the user in the first time period.

when the current water consumption level is determined to be lower than a preset level, determining the maximum water consumption of a user in a first time period in a target data acquisition cycle as a target water consumption, wherein the water consumption reliability of the first time period in the target data acquisition cycle is higher than that of the first time period in other data acquisition cycles;

and when the current water usage level is determined to be greater than a preset level, increasing the water consumption of a target water usage level as a target water consumption, wherein the target water usage level is lower than the current water usage level and is different from the current water usage level by one level. For example, when the current water usage level is 4, the target water usage level is 3.

In one embodiment, the water heater can also collect the middle water temperature so as to control the operation of the corresponding heating device of the water heater through the middle water temperature. Specifically, the water heater includes a bottom heating device and a middle heating device. The water heater can compare the water temperature in the middle of the inner container with the set temperature, if the water temperature in the middle of the inner container is lower than or equal to the set temperature, the water temperature at the top of the water heater can be lower than the set temperature, and therefore the heating device at the bottom of the inner container is controlled to operate. Heating devices are arranged at the top and the bottom of the water heater, but the higher the temperature of the water, the lower the density of the water, namely the water with the high temperature is positioned at the top of the water heater. If the heating device on the top of the inner container is controlled to operate, the hot water on the top has lower density, so that the heating rate of the water in the middle is lower. Therefore, the water heater controls the operation of the heating device at the bottom of the inner container, so that the heating device heats the water at the bottom of the inner container, and the water heated at the bottom floats upwards, so that the cold water at the bottom of the middle part and the top of the inner container is deposited to the bottom and the middle part, namely the water at each part in the inner container is heated by the heating device at the bottom of the water heater. When the water temperature in the middle of the inner container is higher than the set temperature, the water temperature at the top of the inner container is higher, the temperature requirement of a user on hot water can be met, and the operation of the heating devices at the bottom and the top is not required to be controlled. The water heater determines the set temperature of the water heater according to the habit water consumption corresponding to the user in the current time period, compares the middle water temperature of the liner with the set temperature, and starts the heating device at the bottom of the liner to heat the whole water of the liner when the middle water temperature is less than or equal to the set temperature.

When the water temperature in the middle of the inner container is higher than the set temperature, the water heater further judges whether the water heater is in a water discharging state. If the water heater is in a water discharging state, the water heater outputs hot water, and cold water inevitably enters the inner container when the water heater outputs hot water. In order to ensure that the water heater can stably output the water heater, the water heater can control the heating device at the top of the inner container to operate. The water temperature in the middle of the inner container is higher than the set temperature, which indicates that the water temperature at the top of the inner container is also higher than the set temperature, and the hot water output by the water heater at the moment can meet the requirement of a user on the water temperature. However, as the hot water is continuously output from the water heater, the temperature of the output hot water is gradually decreased. Because the heating rate of the bottom heating device to the water on the top of the inner container is less than the heating rate of the top heating device to the top of the inner container, the operation of the top heating device can be controlled, the temperature of the hot water output by the water heater is higher, and the hot water meeting the temperature requirement of a user can be output by the water heater.

In one embodiment, the water heater liner is provided with a plurality of heating devices. At the initial stage of water discharge of the water heater, the water temperature at the top is reduced to a small extent, if the heating device operates, the water temperature at the top is increased, and the heating device is cut off by the temperature limiter, so that the water heater stops operating, namely, the heat input to the top of the inner container is gradually reduced along with the continuous water discharge time increase of the water heater. In the initial stage of water discharge of the water heater, the bottom heating device at the bottom of the inner container and the middle heating device in the middle of the inner container have limited temperature rise on the top water, and the heat input into the top of the inner container is less, so that the water heater controls the top heating device with the maximum temperature rise rate on the top water to operate in the initial stage of water discharge, and more heat is output to the top of the inner container to the maximum extent. In contrast, when water outlet of the water heater is detected, determining a first target heating device according to the heating rate of each heating device to the water at the top of the liner, wherein the first target heating device at least comprises a heating device with the largest heating rate to the water at the top of the liner; and controlling the first target heating device to operate. The water heater is internally provided with a safe temperature, and when the water temperature at the top is lower than the safe temperature and the difference value between the water temperature at the top and the safe temperature is larger, a first target heating device consisting of a top heating device and a middle heating device which have larger heating rate to the water at the top can be controlled to operate; and when the temperature of the top water is lower than the safe temperature and the difference value between the temperature of the top water and the safe temperature is smaller, controlling the first target heating device consisting of the top heating device and the lower heating device with smaller heating rate to the top water to operate.

The safe temperature may be less than a corresponding limit temperature of the temperature limiter. After the first target heating device operates, the water heater acquires the current top water temperature of the inner container in real time, when the current top water temperature is higher than the safe temperature, the top water temperature is indicated to be too high, and if the first target heating device continues to operate, the temperature limiter can cut off the operation of the heating device.

In this regard, the water heater determines a second target heating device that heats the top water at a rate that is less than the rate at which the first target heating device heats the top water. When the first target heating means includes one of the middle heating means and the bottom heating means and the top heating means, the second target heating means includes the top heating means, or the second target heating means includes the middle heating means and the bottom heating means.

And after the second target heating device is determined, controlling the first target heating device to stop running, and controlling the second target heating device to run.

Furthermore, after the second target heating device operates for a period of time, if the current water temperature at the top is higher than the safe temperature, the water temperature at the top is indicated to be too high, and if the second target heating device continues to operate, the temperature limiter can cut off the operation of the heating device. In this regard, the water heater determines a third target heating device, the rate of temperature rise of the top water by the third target heating device being less than the rate of temperature rise of the top water by the second target heating device. The second target heating means may comprise a top heating means, or the second target heating means may comprise a middle heating means and a bottom heating means, and the third target heating means may comprise said bottom heating means. And after the third target heating device is determined, controlling the second target heating device to stop running, and controlling the second target heating device to run.

And by analogy, after the target heating device is switched to operate for a period of time, the current top water temperature is higher than the safe temperature, the current target heating device is switched to the next target heating device by the water heater, and the voiceprint rate of the next target heating device to the top water is smaller than the heating rate of the current target heating device to the water.

After the first target heating device is operated, the water heater can calculate the heat output by the water heater in unit time. The heat output in unit time is (water outlet temperature-water inlet temperature) flow rate specific heat capacity in unit time, wherein the flow rate refers to the flow rate of a water outlet pipe of the water heater, the water inlet temperature can be detected according to a temperature sensor at the bottom of the inner container, the water outlet temperature can be detected according to a temperature sensor at the top of the inner container, and the specific heat capacity is the specific heat capacity of water.

The water heater calculates the amount of heat generated by the first target heating means per unit time. Specifically, the heat generated per unit time is the heating rate, the capacity of the top of the inner container is the specific heat capacity, and the coefficient per unit time, and the first target heating device heats the water at the middle part and the bottom part, so that the heat contributed to the top part by the first target heating device is less than the actual heat, that is, the coefficient is less than 1. When the heat generated by the first target heating device in unit time is equal to or less than the heat output by the water heater in unit time, the variation amplitude of the water temperature at the top part is small, at this time, the first target heating device can be controlled to continuously operate, when the heat generated by the first target heating device in unit time is greater than the heat output by the water heater in unit time, the water temperature at the top part tends to rise, if the duration time that the heat generated by the first target heating device in unit time is greater than the heat output by the water heater in unit time reaches the target time length, the water temperature at the top part is over-high, at this time, the first target heating device needs to be switched to the second target heating device.

In one embodiment, the water heater analyzes the water consumption law of the user by combining the water consumption parameters associated with all time periods, and then realizes the intelligent function of the water heater according to the water consumption law. Specifically, the water heater determines the water demand corresponding to the current time period, wherein the water demand is determined according to the water use reliability; determining a target set temperature of the water heater according to the water demand; and controlling the heating device of the water heater to operate according to the target set temperature.

Specifically, the water heater is provided with a data acquisition cycle, the time length of the data acquisition cycle can be one week, two weeks, three weeks and the like, when the water heater detects water outlet, namely when a user uses the water heater, water consumption parameters of the water heater can be acquired, the water consumption parameters comprise the hot water amount of the water heater used by the user, and the water heater and the time periods are stored in a related mode, so that a database of the water consumption parameters and the time periods corresponding to the data acquisition cycle is established. The water heater can determine the water demand of a user in any time period according to the database corresponding to the data acquisition cycle, wherein the time period refers to a certain time period of a day.

The water heater acquires each time period in the data acquisition cycle, wherein the dates of the time periods are different, for example, the data acquisition cycle is 7 days, and then the time periods [9:00 and 10:00] are 7 in total. The water heater determines the time period associated with the water usage parameter and counts the number of time periods, which may be considered the number of times the user has used water during that time period. The water heater calculates the ratio between the water consumption times and the total amount of the time periods, defines the ratio as the water consumption reliability, and determines the interval where the water consumption reliability is located, and one water consumption corresponding to each interval. For example, the water heater divides the water usage reliability into a plurality of reliability intervals, for example, [ 100%, 85% ], (85%, 70% ], (75%, 55% ], (55%, 40% ], and (40%, 0% ] five intervals, each of the reliability intervals corresponds to a water usage class, e.g., [ 100%, 85% ] corresponds to a water usage class of 1 grade, (85%, 70% ] corresponds to a water usage class of 2 grade, (75%, 55% ] corresponds to a water usage class of 3 grade, (55%, 40% ] corresponds to a water usage class of 4 grade, (40%, 0% ] corresponds to a water usage class of 5 grade, it is understood that the higher the water usage reliability is, the lower the water usage class is, each water usage class has a corresponding water usage amount, the water heater, after determining the water usage reliability, determines the reliability interval in which the water usage reliability is located, and further determines the water usage class based on the reliability intervals, therefore, the water consumption corresponding to the water consumption grade is used as the water consumption demand.

When the water level is 1 level or 2 level, the water heater can accurately determine the target water consumption of the user in the time period. In contrast, the water heater divides the water consumption associated with each first time period into different water volume intervals, and takes the upper limit value of the water volume interval containing the most water consumption as the water consumption corresponding to the water reliability level 1 and the water reliability level 2.

When the water consumption level of the user in the first time period is 3 grades, the water consumption of the user in the time period is accurately determined by the water heater. In this regard, the maximum water usage of the user during the first time period may be used as the water usage corresponding to the water usage level 3.

The water heater can determine the water consumption demand of the user in the current time period according to the water consumption level.

After the water heater determines the water demand, the target set temperature of the water heater can be determined according to the water demand, that is, after the water heater controls the heating device to operate through the target set temperature, the hot water provided by the water heater in the current time period is greater than or equal to the water demand of the user in the current time period. The water heater stores the mapping relation between the set temperature and the water demand, so that the set temperature can be determined according to the water demand.

It should be noted that, in general, the water heater sets the inlet water temperature to be lower, and the inlet water temperature is regarded as a constant, so that the set temperature can be determined according to the water demand. However, in practical situations, the inlet water temperature of the water heater may be high, and if the water heater is at a set temperature determined according to the water demand, the amount of hot water that can be actually output by the water heater is greater than the water demand of the user, or is much greater than the water demand of the user, which causes waste of energy of the water heater.

The water heater is provided with a plurality of water discharging modes, wherein the water discharging modes comprise a water discharging non-heating mode, a water discharging heating mode, a capacity increasing mode and the like. The water heater has corresponding maximum hot water output in different discharge modes. Specifically, the water heater divides the water inlet temperature into N sections at 5-40 ℃, the water outlet temperature into N sections at 35-45 ℃, the set temperature is 35-80 ℃, the N sections are divided, and when the water outlet temperature is 35-45 ℃, hot water is output by the water heater; the water heater sets different inlet water temperatures and set temperatures in different heating modes, and acquires the output quantity of the outlet water temperature at 35-45 ℃, wherein the output quantity is the maximum hot water output quantity corresponding to the water discharging mode. The water heater constructs a mapping relation table according to the data relation among the maximum hot water output quantity, the water inlet temperature, the set temperature and the water discharging mode, and the maximum hot water output quantity can be found in the mapping relation table only according to the water discharging mode, the water inlet temperature and the set temperature. It should be noted that the set temperature used by the water heater to determine the maximum hot water output amount refers to a current set temperature corresponding to a current time period of the water heater.

After the maximum hot water output quantity corresponding to each water discharging mode is determined, the water using demand and the maximum hot water output quantity are compared, and the water discharging mode corresponding to the maximum hot water output quantity larger than the water using demand is used as a target water discharging mode. And the water heater searches a set temperature in a mapping relation table according to the target water discharge mode, the maximum hot water output quantity corresponding to the target water discharge mode and the water inlet temperature, wherein the set temperature is the target set temperature.

The water discharging modes with the maximum hot water output quantity larger than the water demand of the user can be used as target water discharging modes, but when the difference value between the maximum hot water output quantity and the water demand is larger, the situation that the water heater provides more hot water and wastes more energy is shown. In contrast, the water heater firstly judges whether the water discharge mode with the smaller maximum hot water output is the target water discharge mode or not, and then judges whether the water discharge mode with the larger maximum hot water output is the target water discharge mode or not, so that the hot water provided by the water heater for users is not excessive.

And if so, taking the water discharging non-heating mode as a target water discharging mode.

If the maximum hot water output quantity corresponding to the water discharging heating mode is less than or equal to the water demand of a user, the water heater judges whether the maximum hot water output quantity corresponding to the water discharging heating mode is greater than the water demand, the maximum hot water output quantity corresponding to the water discharging heating mode is greater than the maximum hot water output quantity corresponding to the water discharging heating mode, and if the maximum hot water output quantity corresponding to the water discharging heating mode is greater than the water demand, the water discharging heating mode is used as a target water discharging mode.

If the maximum hot water output corresponding to the water discharging heating mode is less than or equal to the water demand of a user, the water heater takes the capacity increasing mode as the target water discharging mode, the maximum hot water output corresponding to the capacity increasing mode is the maximum of the three water discharging modes, the capacity increasing mode refers to that the water heater collects other means to increase the hot water output, for example, the water heater is internally provided with a standby heating device, and the standby heating device is started when the water heater enters the capacity increasing mode.

When the water heater is in a water discharging state, namely the water heater is used by a user, a part of hot water is output by the water heater, and at the moment, the set temperature of the hot water needs to be determined again, so that the residual output hot water quantity of the water heater and the output hot water quantity are equal to or slightly larger than the water using demand of the user.

In contrast, when the water heater is in a water discharging state, the output quantity of hot water in the water heater is detected in real time, the output quantity of the hot water is the quantity of outputted hot water, the difference value between the water demand quantity and the outputted hot water quantity is calculated by the water heater, the difference value is the residual water consumption quantity, the water heater detects the water inlet temperature through a temperature sensor arranged at the bottom of the inner container, the temperature is set according to the water inlet temperature, the residual water consumption quantity and the difference value of a target water discharging mode determined before the water heater in a mapping relation table, the set temperature is the current set temperature of the water heater, and the water heater controls the heating device according to the current set temperature, so that the energy waste of the water heater is less.

In one embodiment, the water heater analyzes the water consumption law of the user by combining the water consumption parameters associated with each time period, and further realizes the intelligent function of the water heater according to the water consumption law. For example, a water heater acquires a first water consumption parameter corresponding to a user in a first time period, wherein the first water consumption parameter comprises a first water amount and a first water temperature; determining a target advanced heating time length corresponding to the first time period of the water heater according to the first water parameter and the heating power of the water heater; and controlling the heating device of the water heater to operate according to the target advanced heating time length.

Specifically, the first water parameter includes a first water amount, and the first water parameter may also include a first water temperature, where the first water temperature is a temperature of hot water required by the user in the first time period, and the first water temperature may be determined according to a water usage habit temperature of the user in the first time period.

Specifically, the first water temperature can be regarded as hot water, that is, the first water temperature can be regarded as the temperature of the hot water, and the first water temperature can be 35-45 ℃. After the first water parameter is determined, the target set temperature of the water heater can be determined according to the first water parameter, namely after the water heater controls the heating device to operate through the target set temperature, the hot water provided by the water heater in the first time period is larger than or equal to the hot water amount of the user in the current time period. The water heater stores a mapping relation among the set temperature, the first water quantity and the first water temperature, so that the set temperature can be determined according to the first water quantity and the first water temperature. It should be noted that, in general, the water heater sets the inlet water temperature to be lower, and the inlet water temperature is regarded as a constant, so that the set temperature can be determined only according to the water consumption and the water temperature. However, in actual situations, the water inlet temperature of the water heater may be high, and if the water heater determines the set temperature according to the water consumption, the amount of hot water that can be actually output by the water heater is larger than the water consumption of a user, or is much larger than the water consumption of the user, which causes energy waste of the water heater.

Since the water heater is heated in advance, it can be considered that the water heater does not enter water, and the water heater obtains the water temperature in the liner, which can be the average water temperature in the liner. The bottom and the top of the inner container are provided with temperature sensors, the average value of the water temperatures detected by the two temperature sensors is the water temperature of the inner container, of course, the inner container can also be provided with a plurality of temperature sensors, and the average water temperature corresponding to the water temperatures collected by the plurality of temperature sensors is the water temperature of the inner container.

When the target set temperature, the heating rate of the heating device to water and the water temperature of the inner container are determined, the advance heating time of the water heater can be calculated, and the advance heating time can be set as the target advance heating time.

After the target advanced heating time length is calculated by the water heater, the water heater can obtain the starting time point of the heating device according to the starting time point of the first time period and the target advanced heating time length, and then the heating device is controlled to operate when the current time point reaches the starting time point. It should be noted that, a plurality of heating devices, for example, 2 or 3 heating devices, may be set in the water heater, and when the water heater is operated in advance, the water heater needs to control the operation of each heating device.

The water heater determines the heating advance time length corresponding to a first time period and a second time period, wherein the second time period is positioned after the first time period and is adjacent to the first time period in terms of time.

And the water heater calculates a third water consumption parameter corresponding to the first water consumption and the second time period, wherein the third water consumption parameter comprises the total water consumption of the first time period and the second time period or comprises the total water consumption and the water consumption temperature, the water consumption temperature is the water consumption temperature of the user in the first time period and the second time period, and the target advanced heating time corresponding to the first time period is determined according to the third water consumption parameter, so that the water heater can provide sufficient hot water for the user in both the first time period and the second time period.

And when the first interval duration is less than the second advanced heating duration, the user water usage in the second time period does not influence the user water usage in the first time period, and at the moment, the advanced heating duration corresponding to the first time period is taken as the target advanced heating duration.

When the first interval duration is longer than the advanced heating duration corresponding to the second time period, the water heater determines the target heating duration of the first time period according to the first water consumption parameter and the second water consumption parameter, that is, the target advanced heating duration of the second time period is actually the sum of the first interval duration and the target advanced heating duration corresponding to the first time period, and at this time, the target advanced heating duration of the second time period does not need to be repeatedly determined. In this regard, when the water heater determines the target advanced heating time period of the first time period, it is necessary to determine whether the water heater simultaneously determines the target advanced heating time period corresponding to a third time period before the first time period, the third time period being adjacent in time to the first time period. In this regard, the water heater calculates a second interval duration between the starting time point of the third time period and the starting time point of the first time period, and if the second interval duration is greater than the first advanced heating duration, it may be determined that the target advanced heating duration of the first time period is not determined in advance by the water heater, and the target advanced heating duration of the first time period needs to be determined. When the second interval duration is less than or equal to the first advanced heating duration, it can be determined that the water heater determines the target advanced heating duration of the first time period in advance, and the water heater can determine the target advanced heating duration corresponding to the first time period according to the target advanced heating duration of the third time period, that is, the target advanced heating duration of the third time period plus the second interval duration is the target advanced heating duration of the first time period.

In one embodiment, the water heater analyzes the water consumption law of the user by combining the water consumption parameters associated with all time periods, and then realizes the intelligent function of the water heater according to the water consumption law. For example, the water heater obtains a first total number of first time periods within a current data acquisition cycle, wherein each of the first time periods belongs to a different date; dividing the first total number of the first time period into a plurality of calculation sets according to different preset interval days; calculating a first water reliability of each calculation set; determining whether the current data acquisition cycle is valid according to the first water reliability of the plurality of calculation sets.

Specifically, the water heater can collect water consumption parameters of a user using the water heater and perform self-learning according to the water consumption parameters, so that the use law of the user on the water heater is analyzed, the use law is the water consumption law of the user, and the water consumption law means that the user needs to use water in a certain time period or does not need to use water in a certain time period.

If the fluctuation is large, it can indicate that the user does not have the water usage law in the time period, i.e. the data collection cycle is invalid in the time period.

Specifically, the water heater needs to first judge whether a certain time period in the data acquisition period is valid, if so, the water consumption fluctuation of the user in the time period is small, the data acquisition period is a user habit period, namely, the user has a water consumption rule in the time period; if the water consumption is invalid, the water consumption fluctuation of the user in the time period is large, and the water consumption law of the user in the time period is not good. Specifically, taking the time length of the data acquisition cycle as 7 days as an example, the water heater acquires first time periods of different dates in the data acquisition cycle, and the first total number of the first time periods is 7.

The water heater further takes different preset interval days K, wherein K is 1 day, 2 days, 3 days, 4 days, 5 days and 6 days … N-1 day, N is the number of days of the data acquisition cycle, namely the data acquisition cycle comprises N first time periods, in the embodiment, the water heater can take more than two preset interval days from 1 day, 2 days, 3 days, 4 days, 5 days and 6 days … N-1 days to obtain a corresponding number of calculation sets, for example, if the number of the preset interval days is 3, there are 3 calculation sets. And calculating the interval duration between the first time periods adjacent to each other in the set as preset interval days. For example, the data acquisition cycle is 7 days, the preset interval days are 1 day and 2 days respectively, then the calculation set corresponding to the preset interval days being 1 day includes 7 first time periods, and the calculation set corresponding to the preset interval days being 2 days includes 4 first time periods of 1, 3, 5, and 7. The more preset interval days are adopted, the higher the accuracy of whether the data acquisition period is effective or not is. In addition, the number of the first time periods in each calculation set can be limited, the number of the first time periods in the calculation sets is greater than or equal to a preset number, the situation that the number of samples in the calculation sets is too small to cause a large error is avoided, and the preset number can be any suitable number.

After the calculation sets are determined, the first water reliability of each calculation set is calculated, specifically, the second total number of the first time periods in the calculation sets and the number of the first time periods with water are determined, and the ratio obtained by dividing the number of the first time periods with water by the second total number is the first water reliability.

After determining the first water reliability corresponding to each calculation set, the water heater determines the maximum first water reliability to serve as a target water reliability, then sequentially calculates first difference values between the target water reliability and each of other first water reliability, and uses the first difference values larger than a preset difference value as target difference values, so as to determine the number of the target difference values; the water heater calculates a first ratio of the number of the target difference values to the total number of the first difference values, if the first ratio is larger than a first preset threshold value, the first preset threshold value can be any suitable value, for example, 70%, the water use fluctuation of the user is in an acceptable range, namely, the fluctuation is normal, at this moment, the data acquisition period is judged to be effective, and the data acquisition period is a user habit period; if the first ratio is smaller than or equal to the first preset threshold, it indicates that the water consumption of the user is abnormal, and the data acquisition cycle is invalid, that is, the user has no water consumption regularity in the first time period of the data acquisition cycle.

It should be noted that a plurality of data acquisition cycles can be set in the water heater, the time length of each data acquisition cycle is different, and when the current data acquisition cycle is determined to be invalid, the next data acquisition cycle is used as the current data acquisition cycle until the valid data acquisition cycle is determined. Of course, if all data collection cycles are invalid, it indicates that the user does not have the water usage pattern in the first time period.

The water heater can calculate the range and the average value of the first water reliability of each calculation set, so that whether the water fluctuation of the user in the first time period is normal or not is determined according to the range and the average value, namely whether the data acquisition period is effective or not is judged.

Specifically, the maximum first water reliability and the minimum water reliability are extracted from the water heater to calculate a second difference, and then an average value corresponding to each first water reliability is calculated. The water heater then calculates a second ratio between the second difference and the average value, and determines whether the second ratio is less than or equal to a second preset threshold, where the second preset threshold may be any suitable value, such as 150%. When the second ratio is smaller than or equal to a second preset threshold, the water fluctuation of the user in the first time period can be judged to be normal, namely the data acquisition cycle is effective; and if the second ratio is larger than a second preset threshold value, the data acquisition period is invalid.

In one embodiment, the water heater analyzes the water consumption law of the user by combining the water consumption parameters associated with each time period, and further realizes the intelligent function of the water heater according to the water consumption law. For example, when the water heater determines that a user does not need water in a first time period, the water use reliability and the water inlet temperature corresponding to the first time period are obtained; and determining the target set temperature of the water heater according to the water use reliability and the inlet water temperature.

Specifically, the water heater determines a current water usage level corresponding to the water usage reliability, wherein the higher the water usage reliability is, the lower the current water usage level is; determining a temperature increment value according to the current water consumption level, wherein the lower the current water consumption level is, the smaller the temperature increment value is; and determining the target set temperature of the water heater according to the temperature increment value and the inlet water temperature.

If the current water consumption level is level 1, the accuracy that the user does not use the water heater in the first time period is very high, so that the target set temperature can be set to be the water inlet temperature, and the water inlet temperature is the historical water inlet temperature stored in the first time period by the water heater. If the current water consumption level is level 2, the accuracy that the user does not use the water heater is high, and at the moment, the target setting is set to be the inlet water temperature + the temperature increment value m. By analogy, when the current water consumption level is higher, the accuracy of judging that the water heater is not used by a user in a first time period by the water heater is lower, the target set temperature is higher, and the target set temperature can be determined by the following formula: the target set temperature is the intake water temperature + K temperature increment value, where K is 0, 1,2,3 …, the water reliability level determines the size of K, when the water reliability level is 1 level, K is 0, when the water reliability level is 2 levels, K is 1, and so on.

After the target set temperature of the water heater is determined, the first target operation parameter of the water heater can be determined according to the target set temperature of the water heater.

The invention also provides a water heater, which comprises a memory, a processor and a heating control program of the water heater, wherein the heating control program of the water heater is stored in the memory and can run on the processor, and when the heating control program of the water heater is executed by the processor, the steps of the heating control method of the water heater are realized.

The present invention also provides a computer-readable storage medium storing a heating control program of a water heater, which when executed by a processor, implements the steps of the heating control method of the water heater according to the above embodiment.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A heating control method of a water heater is characterized by comprising the following steps:

determining the water use reliability corresponding to a first time period of a user, determining a target water consumption according to the water use reliability, wherein the water use reliability is determined according to the total number of the first time period in a data acquisition cycle and the number of the first time period of associated water use parameters, calculating a first ratio between the water use times and the total number of the first time period, defining the first ratio as the water use reliability, determining a reliability interval in which the water use reliability is located after the water use reliability is determined, determining the water use grade according to the reliability interval, and taking the water consumption corresponding to the water use grade as the first water amount; the water consumption of each interval corresponds to one, and the dates of the first time periods in the data acquisition cycle are different;

when the water use level is 1 level or 2 level, taking the upper limit value of the water volume interval containing the most water use amount as the water use amount corresponding to the 1 level and the 2 level of the water use reliability level;

when the water consumption level of the first time period is 3 grades, taking the maximum water consumption of the user in the first time period as the water consumption corresponding to the water consumption level 3;

when the water consumption level is 4 levels in the first time period, adding a preset water amount to the water amount corresponding to the 3 levels of the water consumption level, wherein the preset water amount is a redundant amount, and obtaining the water consumption corresponding to the 4 levels of the water consumption level;

when the water consumption grade in the first time period is 5 grades, adding a preset water quantity to the user water quantity corresponding to the water consumption grade of 4 grades to obtain water corresponding to the water consumption grade of 5 grades;

determining target operation parameters corresponding to the water heater according to the target water consumption; the target operation parameters comprise a target set temperature of the water heater, parameters corresponding to a target heating mode of the water heater and parameters corresponding to an advanced heating time of the water heater;

wherein the advance heating time length is determined according to the target set temperature and the heating rate;

and the water heater determines the running time point of the water heater according to the advanced heating time length, and controls the water heater to run according to the target running parameter in the first time period when the current time point reaches the running time point, and/or controls the water heater to run before the first time period according to the target running parameter.

2. The heating control method of a water heater as claimed in claim 1, wherein the determining of the water usage reliability based on the total number of first time periods in the data collection cycle and the number of first time periods associated with the water usage parameter comprises:

3. The heating control method of a water heater as claimed in claim 1, wherein the step of determining the reliability of the water usage corresponding to the user during the first time period comprises:

determining the total number of first time periods and the number of first time periods with water in each type of data acquisition cycle, wherein the time lengths of the data acquisition cycles are different;

4. The heating control method of a water heater as claimed in claim 1, wherein the step of determining the target water usage amount according to the current water usage level comprises:

5. A water heater comprising a memory, a processor, and a heating control program of the water heater stored in the memory and executable on the processor, the heating control program of the water heater when executed by the processor implementing the steps of the heating control method of the water heater as recited in any one of claims 1 to 4.

6. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a heating control program of a water heater, which when executed by a processor, implements the steps of the heating control method of the water heater according to any one of claims 1 to 4.