CN110398069B

CN110398069B - Water heater, control method thereof and computer-readable storage medium

Info

Publication number: CN110398069B
Application number: CN201910608474.7A
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: 2022-05-20
Anticipated expiration: 2039-07-05
Also published as: CN110398069A; WO2021004043A1

Abstract

The invention discloses a control method of a water heater, which comprises the following steps: acquiring a first water consumption parameter corresponding to a user in a first time period, wherein the first water consumption parameter comprises a first water consumption and a first water temperature, and the first water consumption is determined according to the water consumption reliability; 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. The invention also discloses a water heater and a computer readable storage medium. The water heater of the invention has less energy waste.

Description

Water heater, 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 control method thereof and a computer readable storage medium.

Background

With the development of technology, water heaters have become a popular household appliance.

The heating process of the water heater usually adopts a certain heating pipe to work independently, after the water heater heats water to a set temperature, if a user does not use water, the water heater enters a heat preservation state, and when the water temperature is reduced to be less than a threshold value, the water heater restarts the heating pipe to heat the water to the set temperature again.

Because the set temperature of the water heater is the set temperature which is usually far higher than the ambient temperature, the heat of the inner container of the water heater can be diffused to the environment, and the difference value between the water temperature in the inner container and the ambient temperature is larger, the heat dissipation speed in unit time is faster, and more energy waste of the water heater is caused.

Disclosure of Invention

The invention mainly aims to provide a water heater, a control method thereof and a computer readable storage medium, and aims to solve the problem that the energy waste of the water heater is more.

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

acquiring a first water consumption parameter corresponding to a user in a first time period, wherein the first water consumption parameter comprises a first water consumption and a first water temperature, and the first water consumption is determined according to the water consumption reliability;

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.

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

According to the water heater, the control method and the computer readable storage medium provided by the invention, the water heater determines the water consumption parameters corresponding to the user in a time period, the water consumption parameters comprise the water consumption and the water temperature, and the advanced heating time of the water heater is determined according to the water consumption parameters and the heating power of the water heater, so that the heating device of the water heater heats water according to the advanced heating time, the water heater provides the hot water amount required by the user for the user in the time period, the shower effect of the water heater is ensured, the water temperature is prevented from being heated circularly by the water heater, and less energy is wasted by the water heater.

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 control method of a water heater according to an embodiment of the present invention;

FIG. 3 is a detailed flowchart of step S200 in FIG. 2;

fig. 4 is a detailed flowchart of step S210 in fig. 3.

The implementation, functional features and advantages of the objects of the present invention will be further explained 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: acquiring a first water consumption parameter corresponding to a user in a first time period, wherein the first water consumption parameter comprises a first water consumption 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.

Because the heating device of the water heater heats water according to the heating time length in advance, the water heater provides the hot water amount required by a user for the user in the time period, the shower effect of the water heater is ensured, the water heater is prevented from circularly heating the water temperature, and the energy waste of the water heater is less.

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 the 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 control program of the 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 control program of the water heater stored in the memory 102 and perform the following operations:

acquiring a first water consumption parameter corresponding to a user in a first time period, wherein the first water consumption parameter comprises a first water consumption and a first water temperature;

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

Referring to fig. 2, fig. 2 is a first embodiment of a control method of a water heater according to the present invention, the control method of the water heater including the steps of:

step S100, acquiring a first water consumption parameter corresponding to a user in a first time period, wherein the first water consumption parameter comprises a first water consumption and a first water temperature, and the first water consumption is determined according to water consumption reliability;

in this embodiment, the water heater is provided with a data acquisition cycle, the time length of the data acquisition cycle may be one week, two weeks, three weeks, and the like, when the water heater detects water discharge, that is, when it is detected that the user uses the water heater, the water consumption parameters of the water heater are acquired, the water consumption parameters include the amount of hot water used by the user for the water heater, and the water heater is stored in association with the time period, so as to establish a database of the water consumption parameters and the time period corresponding to the data acquisition cycle. The water heater can determine the water consumption 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 the first time periods in the data acquisition cycle, wherein the dates of the first time periods are different, for example, the data acquisition cycle is 7 days, and then the total number of the first time periods [9:00, 10:00] is 7. The water heater determines a first time period associated with the water usage parameter and counts the number of the first time period, which may be considered as the number of times the user consumes water in the first time period. The water heater calculates the ratio of the water consumption times to the total amount of the water consumption times in the first time period, the ratio is defined as the water consumption reliability, and the intervals where the water consumption reliability is located are determined, wherein each interval corresponds to one water consumption. 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, thereby using the water consumption corresponding to the water consumption grade as the first water quantity.

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.

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 the preset water quantity to the water quantity corresponding to the water consumption grade 3, wherein the preset water quantity is the redundant quantity, and the water consumption corresponding to the water consumption 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.

It should be noted that 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 temperature of water used by the user in the first time period.

Step S200, 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;

in the embodiment, the water heater can control the heating device to operate in advance, so that the water heater can provide sufficient hot water for a user in advance when the user uses the water heater in a first time period. The water heater can determine a target set temperature of the water heater according to the first water parameter, and then the target advance heating time length is obtained through calculation according to the target set temperature, the water temperature in the inner container and the heating rate of the heating device to water, and the heating rate of the heating device to water can be obtained through calculation according to the heating power of the water heater and the capacity of the inner container. It should be noted that the heating power of the water heater may be the maximum heating power or the optimal energy efficiency power, and when the heating device in the water heater operates with the optimal energy efficiency power, the energy efficiency ratio of the water heater is optimal.

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 quantity 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 set temperature of the water heater is determined according to the water consumption, the amount of hot water which can be actually output by the water heater is larger than the water consumption of a user, or is far larger than the water consumption of the user, so that energy of the water heater is wasted.

Because the water heater is heated in advance, the water heater can be regarded as not entering water, and the water heater obtains the water temperature in the liner, and the water temperature 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.

And step S300, controlling the heating device of the water heater to operate according to the target advanced 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.

In the technical scheme that this embodiment provided, the water heater confirms the water consumption that the user corresponds in the time quantum to length of time is heated in advance according to the water consumption definite water heater, makes the heating device of water heater heat water according to length of time is heated in advance, thereby makes the water heater provide the required water consumption of user for the user in this time quantum, has guaranteed the shower effect of water heater, and avoids water heater circulation heating temperature, and the energy waste of water heater is less.

Referring to fig. 3, fig. 3 is a detailed flowchart of step S200 in fig. 2, where the step S200 includes:

step S210, determining the advance heating time length corresponding to the first time period of the water heater according to the first water parameter and the heating power;

step S220, acquiring a second water consumption parameter corresponding to a second time period of the user, and determining an advanced heating time length corresponding to the second time period of the water heater according to the second water consumption parameter and the heating power, wherein the first time period is adjacent to the second time period and is earlier than the second time period;

in this embodiment, the water heater needs to control the heating device to operate in advance before the first time period, so that the heating device needs to be controlled to operate in advance in the time period before the first time period, and so on, the water heater needs to control the heating device to operate in advance in each time period of the day. However, if the time period after the first time period is the time period after the first time period, that is, the second extraction heating time period of the second time period is longer than the first interval time period between the starting time period of the first time period and the starting time period of the second time period, the water heater may control the heating device to operate according to the water consumption of the user in the first time period, and the water heater may need to control the heating device to operate in advance according to the second water parameter of the user in the second time period, so as to influence the temperature of the hot water provided by the water heater in the first time period.

For this, the water heater comprehensively considers the first advanced heating time length corresponding to the first time period and the second advanced heating time length corresponding to the second time period so as to reasonably determine the target advanced heating time length corresponding to the first time period.

Step S230, determining a target advanced heating duration of the first time period according to the advanced heating duration corresponding to the first time period and the advanced heating duration corresponding to the second time period.

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.

In this embodiment, the water heater determines the first time period and the advanced heating time period corresponding to the second time period after the first time period, so as to determine whether the advanced heating of the water heater to water in the second time period affects the advanced heating of the water heater to water in the first time period, thereby reasonably determining the advanced heating time period of the water heater in the first time period, and avoiding that the water heater cannot provide sufficient hot water for a user after the first time period.

In an embodiment, when the first interval duration is longer than the advanced heating duration corresponding to the second time period, the water heater may determine the target heating duration of the first time period according to the first water usage parameter and the second water usage 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 contrast, 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 water heater does not determine the target advanced heating duration of the first time period in advance, and at this time, steps S220 and S230 are performed. 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 this embodiment, the water heater determines a second interval duration between a starting time point of a third time period before the first time period and the first time period, so as to determine whether the target advance duration of the first time period is determined in advance according to the second interval duration, avoid recalculating the target advance heating duration of the first time period by the water heater, and save the calculation resources of the water heater.

Referring to fig. 4, fig. 4 is a schematic view of a detailed flow of step S210 in fig. 3, where step S210 includes:

step S211, determining the maximum hot water output quantity corresponding to the water discharging mode of the water heater in the first time period;

step S212, according to the maximum output quantity of hot water and the first water quantity, determining a first target water discharge mode corresponding to the first time period in each water discharge mode, wherein the maximum output quantity of hot water corresponding to the first target water discharge mode is larger than the first water quantity;

in the present embodiment, the water heater is provided with a plurality of water discharging modes, and the water discharging modes comprise a water discharging non-heating mode, a water discharging heating mode and the like. The water heater has a corresponding maximum hot water output at different discharge modes. Specifically, the water heater divides the water inlet temperature of 5-40 ℃ into N sections, the water outlet temperature of 35-45 ℃ into N sections, the set temperature of 35-80 ℃ is divided into N sections, and the time hot water output by the water heater is when the water outlet temperature is 35-45 ℃; 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 first water quantity is compared with the maximum hot water output quantity, and the water discharging mode corresponding to the maximum hot water output quantity larger than the first water quantity is used as a first target water discharging mode corresponding to a first time period. And the water heater searches a set temperature in the mapping relation table according to the first target water discharging mode, the maximum hot water output quantity corresponding to the first target water discharging mode and the water inlet temperature, wherein the set temperature is the first target set temperature.

The water heater can determine a first target water discharge mode according to the first water quantity, determine a second target water discharge mode according to the second water quantity, wherein the maximum hot water output quantity of the second target water discharge mode is larger than the second water quantity, and the maximum hot water output quantity of the first target water discharge mode is larger than the first water quantity.

Step S213, determining a first target set temperature corresponding to the first time period of the water heater according to the first target water discharging mode, and acquiring a liner water temperature corresponding to the first time period of a liner of the water heater;

step S214, determining an advanced heating time corresponding to the first time period according to the first target set temperature, the liner water temperature and the heating power.

After the first target water discharging mode is determined, the first target set temperature of the water heater can be determined, and the water temperature of the inner container and the heating rate of the heating device to water are determined, wherein the water temperature of the inner container refers to the average temperature of the water in the inner container, so that the advance heating time length corresponding to the first time period of the water heater is determined. And similarly, calculating the corresponding advanced heating time length of the water heater in the second time period.

In the technical scheme provided by this embodiment, the water heater determines the maximum hot water output amount corresponding to the water discharge mode in the time period, determines the target water discharge mode corresponding to the time period according to the maximum hot water output amount and the water consumption amount, and determines the target set temperature according to the target water discharge mode, so that the water heater can accurately calculate the advanced heating time length corresponding to the time period of the water heater according to the target set temperature.

In one embodiment, the water discharge modes with the maximum hot water output greater than the average water consumption of the user can be used as the target water discharge modes, but when the difference between the maximum hot water output and the water consumption is larger, the water heater provides more hot water and wastes more energy. In contrast, the water heater judges whether the water discharge mode with the smaller maximum hot water output is the target water discharge mode or not, and 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 supplied to a user by the water heater is not excessive.

The maximum hot water output corresponding to the water heater is the minimum in the water discharging non-heating mode, so that the water heater firstly judges whether the maximum hot water output corresponding to the water discharging non-heating mode is larger than the water consumption, and if so, the water discharging non-heating mode is taken as the target water discharging mode.

If the maximum hot water output corresponding to the water discharging non-heating mode is less than or equal to the water consumption of a user, the water heater judges whether the maximum hot water output corresponding to the water discharging heating mode is greater than the water consumption, the maximum hot water output corresponding to the water discharging heating mode is greater than the maximum hot water output corresponding to the water discharging non-heating mode, and if the maximum hot water output corresponding to the water discharging heating mode is greater than the water consumption, 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 consumption 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 acquires 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.

The water heater can respectively determine a first target water discharging mode corresponding to the first time period and a second target water discharging mode corresponding to the second time period according to the judgment logic.

In the technical scheme provided by this embodiment, the water heater first determines whether the water discharge mode with a small maximum hot water output is the target water discharge mode, and then determines whether the water discharge mode with a large maximum hot water output is the target water discharge mode, so that the hot water supplied to the user by the water heater in advance is not excessive, and the energy waste of the water heater is less.

In one embodiment, the first time period and the second time period correspond to a target water discharge mode, and the maximum hot water output of the target water discharge mode corresponding to the first time period and the second time period is equal to or slightly larger than the water consumption of the user in the time period. However, the control level of the advanced heating of the water heater is higher than the control level of the energy waste of the water heater, namely, the advanced heating of the water heater in each time period is considered preferentially, and then the energy waste condition of the water heater is considered.

In contrast, when the advanced heating period of the second period is longer than the first interval period, the second target water discharge mode corresponding to the second period needs to be determined again.

Specifically, when the second target water discharge mode is the capacity increase mode, because the maximum hot water output corresponding to the capacity increase mode is the maximum of the three water discharge modes, at this time, the second target water discharge mode is determined again, that is, the third target water discharge mode is still the capacity increase mode;

when the second target water discharging mode is the water discharging heating mode, the third target water discharging mode can be determined as the capacity increasing mode;

when the second target water discharging mode is a water discharging non-heating mode, the third target water discharging mode can be a water discharging heating mode or a capacity increasing mode.

After the target water discharging mode corresponding to the second time period is determined again, the advanced heating time length of the second time period is calculated again, and then the target advanced heating time length of the first time period is determined according to the recalculated advanced heating time length of the second time period and the advanced heating time length of the first time period.

In the technical scheme provided by this embodiment, when it is determined that the advanced heating duration of the second time period is longer than the first interval duration, the water heater adjusts the target water discharge mode corresponding to the second time period, so that the water heater performs advanced heating in a segmented manner as much as possible, and the heating duration of the heating device of the water heater is prevented from being too long.

In one embodiment, when the water heater is used by a user for a first period of time, the water heater outputs a part of hot water, and at the moment, the hot water needs to be re-determined to be at the set temperature, 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 consumption of the user.

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 output hot water quantity, the difference value between the calculated water consumption and the output hot water quantity of the water heater is the residual water consumption, the water heater collects the inlet water temperature detected by a temperature sensor arranged at the bottom of the inner container, the temperature is set according to the inlet water temperature, the residual water temperature 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 second target set temperature of the water heater, and the water heater controls the heating device according to the second target set temperature, so that the energy waste of the water heater is less.

In the technical scheme provided by the embodiment, when the water heater is in the water discharge state at the first time period, the set temperature of the water heater is adjusted in real time according to the output hot water quantity and the water consumption of a user, so that the outputable hot water quantity of the water heater is reduced along with the increase of the output hot water quantity, and the energy waste of the water heater is less.

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 temperature at the middle part of the inner container can be compared with the set temperature of the water heater, if the water temperature at the middle part 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 accordingly, 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 the hot water is output by the water heater, so that cold water inevitably enters the inner container. 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 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. Specifically, the water heater determines a water demand corresponding to a current time period, wherein the water demand is determined according to 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 of the water consumption times to the total amount of the time periods, defines the ratio as the water consumption reliability, and determines the intervals where the water consumption reliability is located, and each interval corresponds to one water consumption. 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.

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 or far greater than the water demand of the user, which causes energy waste 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 non-heating mode is less than or equal to the water demand of the 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 non-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 taken as the 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.

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 the outputted hot water, the difference value between the water demand quantity and the outputted hot water quantity of the water heater is calculated, the difference value is the residual water consumption quantity, the water heater collects the water inlet temperature detected by a temperature sensor arranged at the bottom of the liner, 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, the water heater determines the water use reliability corresponding to a user in a first time period, and determines a 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.

Specifically, the water heater may determine a water usage reliability of the user over a time period, the water usage reliability indicating a probability that the user uses the water heater over the time period, the higher the water usage reliability, the greater the probability that the user uses 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. After the water use reliability is determined, the reliability interval where the water use reliability is located is determined, and then the water use grade is determined according to the reliability interval, so that the water use quantity corresponding to the water use grade is used as the target water use quantity.

The water heater is provided with a data acquisition period, and the duration of the data acquisition period can be the latest 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. The water heater calculates a first ratio between the number of first time periods having water usage and the total number of the first time periods, the first ratio being indicative of the frequency of water usage by the user during the first time period, the greater the first ratio, the higher the frequency of water usage by the user during the first time period. 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.

The water heater is divided into a plurality of time periods in one day, and after a user uses the water heater in a certain 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.

The user has more historical water consumption times for the water heater in a certain time period, has less historical water consumption times for the water heater in another time period, and records the water consumption times of the user in one time period as the historical book consumption times, for example, the user has a difference in a certain week, so the water heater has no water consumption parameter of the week. At this time, when the water heater is used for calculating 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 of the data acquisition cycle is 6 months and 1 #, and the schedule of the first time period is changed to 6 months and 9 #, the day with the earliest time of the data acquisition cycle is updated to 6 months and 2 #, that is, the water heater replaces the water consumption parameter acquired in 6 months and 9 # with the water consumption parameter acquired in 6 months and 1 #.

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 in sequence, 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 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, 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 the time 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 the number of preset interval days is adopted, the higher the accuracy of whether the data acquisition cycle 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, so that the situation that the error is large due to the fact that the number of samples in the calculation sets is too small 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 other first water reliability, and takes 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 has no water usage pattern for 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 all time periods, and then 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.

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

The present invention also provides a computer-readable storage medium storing a control program of a water heater, which when executed by a processor, implements the steps of the 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 defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a 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 control method of a water heater is characterized by comprising the following steps:

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, wherein the method comprises the following steps:

determining the maximum hot water output quantity corresponding to the water discharging mode of the water heater in the first time period;

according to the maximum hot water output quantity and the first water quantity, determining a first target water discharging mode corresponding to the first time period in each water discharging mode; the maximum hot water output quantity corresponding to the first target water discharging mode is larger than the first water quantity;

determining a first target set temperature corresponding to the first time period of the water heater according to the first target water discharging mode, and acquiring a liner water temperature corresponding to the first time period of a liner of the water heater;

determining a first advance heating time corresponding to the first time period according to the first target set temperature, the temperature of the inner container and the water heating rate of the water heater, wherein the water heating rate of the water heater is calculated according to the heating power of the water heater and the capacity of the inner container;

acquiring a second water consumption parameter corresponding to a second time period of a user, and determining a second advanced heating time corresponding to the second time period of the water heater according to the second water consumption parameter and the heating power; wherein the first time period is adjacent to the second time period and the first time period is earlier than the second time period;

determining a first interval duration between a starting time point of the first time period and a starting time point of the second time period;

determining a third water use parameter in the first time period and the second time period after determining that the advanced heating time period corresponding to the second time period is greater than the first interval time period and the second target water discharge mode corresponding to the second time period is a capacity expansion mode, wherein the third water use parameter comprises the total water use amount and the water use temperature in the first time period and the second time period;

determining a target advanced heating time length corresponding to the first time period according to the third water parameter and the heating power; alternatively, the first and second electrodes may be,

when the first interval duration is less than the second advanced heating duration, taking the advanced heating duration corresponding to the first time period as a target advanced heating duration;

controlling a heating device of the water heater to operate according to the target advanced heating time length, wherein the first water consumption is determined according to the water use reliability corresponding to the first time period, the water use reliability is determined according to the total number of the first time period in the data acquisition period and the number of the first time periods of the associated water use parameters, the ratio between the water use times and the total number of the time periods is calculated, the ratio is defined as the water use reliability, after the water use reliability is determined, the reliability interval where the water use reliability is located is determined, the water use grade is determined according to the reliability interval, and the water use corresponding to the water use grade is used as the first water consumption; 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 grade is grade 1 or grade 2, taking the upper limit value of the water volume interval containing the most water volume as the water volume corresponding to grade 1 and grade 2 of the water use reliability grade;

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;

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

2. The method as claimed in claim 1, wherein the step of determining the maximum hot water output of the discharge mode of the water heater during the first time period comprises:

determining the inlet water temperature and the initial set temperature corresponding to the water heater in the first time period;

and determining the maximum hot water output quantity corresponding to the water discharging mode in the first time period according to the inlet water temperature and the initial set temperature.

3. The method as claimed in claim 1, wherein the water discharge modes include a water discharge non-heating mode, a water discharge heating mode and a water volume increasing mode, the maximum hot water output amounts of the water discharge non-heating mode, the water discharge heating mode and the water volume increasing mode are sequentially increased, and the step of determining the first target water discharge mode corresponding to the first time period in each water discharge mode according to each maximum hot water output amount and the first water volume comprises:

when the maximum hot water output quantity corresponding to the water discharging non-heating mode is larger than the first water quantity, taking the water discharging non-heating mode as a first target water discharging mode;

when the maximum hot water output quantity corresponding to the water discharging non-heating mode is determined to be less than or equal to the first water quantity, and the maximum hot water output quantity corresponding to the water discharging heating mode is determined to be greater than the first water quantity, taking the water discharging heating mode as a first target water discharging mode;

and when the maximum hot water output quantity corresponding to the water discharging heating mode is determined to be less than or equal to the first water quantity, taking the capacity increasing mode as a first target water discharging mode.

4. The method for controlling a water heater according to claim 1, wherein the step of determining the target advanced heating time period corresponding to the first time period according to the advanced heating time period corresponding to the first time period and the advanced heating time period corresponding to the second time period comprises:

and determining the target advanced heating time length corresponding to the first time period according to the third water parameter and the heating power.

5. The method of controlling a water heater as set forth in claim 4, wherein said step of determining a first interval duration between a starting point in time of said first time period and a starting point in time of said second time period is followed by further comprising:

determining a third target water discharging mode corresponding to the second time period when the advanced heating time period corresponding to the second time period is determined to be larger than the first interval time period and the second target water discharging mode corresponding to the second time period is a water discharging non-heating mode or a water discharging heating mode, wherein the maximum hot water output corresponding to the third target water discharging mode is larger than the maximum hot water output corresponding to the second target mode in the second time period;

re-determining the advanced heating time corresponding to the second time period according to the third target water discharging mode;

and determining the target advanced heating time length of the first time period according to the re-determined advanced heating time length corresponding to the second time period and the re-determined advanced heating time length corresponding to the first time period, and controlling the heating device of the water heater to operate according to the target advanced heating time length.

6. The method for controlling a water heater according to claim 1, wherein the step of controlling the operation of the heating device of the water heater according to the target advanced heating time period is followed by further comprising:

after the water heater is determined to discharge water in a first time period, determining the current output hot water quantity and the current inlet water temperature of the water heater;

determining the residual water consumption according to the first water quantity and the output hot water quantity;

determining a second target set temperature of the water heater according to the residual water consumption and the inlet water temperature;

and controlling the heating device of the water heater to operate according to the second target set temperature.

7. A water heater comprising a memory, a processor and a control program for the water heater stored in the memory and executable on the processor, the control program for the water heater when executed by the processor implementing the steps of the method of controlling the water heater as claimed in any one of claims 1 to 6.

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