CN108286810B - Water heater and control method thereof - Google Patents

Abstract

The invention discloses a water heater and a control method thereof, wherein the water heater control method comprises the following steps: counting the times of water consumption in each water use time period of each day in the previous cycle, and the water use times of the water use time period is greater than or equal to a first preset times When the frequency of water consumption is greater than or equal to the second preset times and less than the first preset times, this time period is the period of medium frequency water consumption; the times of water consumption in the water consumption period is less than the When the number of times is preset, the time period is the low-frequency water consumption period; the current water consumption period is obtained; the working state of the water heater is adjusted according to the current water consumption period. According to the technical solution of the present invention, the water heater divides the user's water use period into high frequency water use period, medium frequency water use period and low frequency water consumption period, and then adjusts the working state of the water heater according to the water consumption conditions of different time periods, so that the water heater can meet the user's water consumption. At the same time, the energy consumption of the water heater is reduced.

Description

Water heater and control method thereof

technical field

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

Background technique

With the improvement of people's living standards, people's energy-saving requirements for water heaters are also getting higher and higher. The control of the existing water heater usually only includes two modes: power-on cycle heating and shutdown. When the power is turned off, the user cannot use the hot water in time. The timeliness of water use and the utilization rate of energy cannot be unified, which cannot meet the needs of users for the use of water heaters.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a water heater, which aims to improve the timeliness and energy utilization of water for users of the water heater.

In order to achieve the above purpose, the water heater control method proposed by the present invention is characterized in that it includes the following steps:

Count the times of water use in each water use time period of each day in the previous cycle. When the water use times of the water use time period is greater than or equal to the first preset times, the time period is a high-frequency water use period;

When the number of times of water use in the water use time period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is an intermediate frequency water use period;

When the number of times of water use in the water use time period is less than the second preset number of times, the time period is a low frequency water use period;

Get the current water usage period;

Adjust the working state of the water heater according to the current water use time period.

Preferably, the step of adjusting the heating power of the water heater according to the current water use period includes:

When the current water consumption period is the high frequency water consumption period, adjust the working state of the water heater to the heating state;

When the current water use period is the intermediate frequency water use period, adjust the working state of the water heater to the heat preservation state;

When the current water consumption period is the low frequency water consumption period, the working state of the water heater is adjusted to the dormant state.

Preferably, the step of adjusting the heating power of the water heater according to the current water use period includes:

When the current water consumption period is the high-frequency water consumption period, calculate the average water consumption during the high-frequency water consumption period, and when the average water consumption is greater than or equal to the first preset water consumption, the current water consumption period is the high temperature period;

The water temperature in the water heater is heated to the first preset temperature during the high temperature period.

Preferably, the step of adjusting the heating power of the water heater according to the current water use period includes:

When the current water consumption period is the high-frequency water consumption period, the average water consumption during the high-frequency water consumption period is calculated, and when the average water consumption is less than the first preset water consumption, the current water consumption period is the low temperature period;

The temperature of the water in the water heater is heated to a second preset temperature during the low temperature period.

Preferably, the step of adjusting the heating power of the water heater according to the current water use period includes:

When the current water consumption period is the intermediate frequency water consumption period, the average water consumption during the intermediate frequency water consumption period is calculated, and when the average water consumption is greater than or equal to the second preset water consumption, the current water consumption period is the heat preservation period;

During the heat preservation time period, the working state of the water heater is adjusted to heat preservation.

The present invention further provides a water heater, comprising:

The statistics module is used to count the times of water consumption in each water use time period of each day in the previous cycle. When the water use times of the water use time period is greater than or equal to the first preset times, the time period is a high-frequency water use period; When the number of times of water use in the water usage period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is the intermediate frequency water use period; when the water use time period of the water use time period is less than the second preset number of times, the time period is the low frequency water use period period;

The acquisition module is used to acquire the current water usage period;

The control module is used to adjust the working state of the water heater according to the current water use period.

Preferably, the control module includes:

The heating unit is used to adjust the working state of the water heater to the heating state when the current water consumption period is the high-frequency water consumption period;

The heat preservation unit is used to adjust the working state of the water heater to the heat preservation state when the current water use time period is the intermediate frequency water use time period;

The dormancy unit is used to adjust the working state of the water heater to the dormant state when the current water consumption period is the low-frequency water consumption period.

Preferably, the control module includes:

The first calculation unit is configured to calculate the average water consumption during the high-frequency water consumption period when the current water consumption period is the high-frequency water consumption period, and when the average water consumption is greater than or equal to the first preset water consumption, the current water consumption period is the high temperature period part;

The first heating unit is used for heating the water temperature in the water heater to a first preset temperature during a high temperature period.

Preferably, the control module includes:

The second calculation unit is configured to calculate the average water consumption during the high-frequency water consumption period when the current water consumption period is the high-frequency water consumption period, and when the average water consumption is less than the first preset water consumption, the current water consumption period is the low-temperature period;

The second heating unit is used for heating the water temperature in the water heater to a second preset temperature within a low temperature period.

Preferably, the control module includes:

a third calculation unit, configured to calculate the average water consumption during the intermediate frequency water consumption period when the current water consumption period is the intermediate frequency water consumption period, and when the average water consumption is greater than or equal to the second preset water consumption period, the current water consumption period is the heat preservation period;

The heat preservation unit is used to adjust the working state of the water heater to heat preservation during the heat preservation time period.

In the present invention, the water heater first counts the times of water use in each water use time period of each day in the previous cycle, wherein the water use time period includes high frequency water use time period, medium frequency water use time period and low frequency water use time period; when the water use time period of the water use time period is greater than or When it is equal to the first preset number of times, the time period is a high-frequency water use period; when the water use time period of the water use time period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is an intermediate-frequency water use period; when When the number of times of water use in the water use time period is less than the second preset number of times, the time period is a low-frequency water use time period; then the current water use time period is obtained according to the current time; and then the working state of the water heater is adjusted according to the current water use time period; The water use period is divided into high-frequency water consumption period, intermediate frequency water consumption period and low-frequency water consumption period, and then adjust the working state of the water heater according to the water consumption in different time periods, so that the water heater can meet the user's water consumption and reduce the energy consumption of the water heater.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

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

2 is a schematic flowchart of an embodiment of a water heater control method according to the present invention;

3 is a schematic flowchart of another embodiment of the control method for a water heater according to the present invention;

4 is a schematic diagram of functional modules of an embodiment of the water heater of the present invention;

FIG. 5 is a schematic diagram of functional modules of another embodiment of the water heater of the present invention.

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and should not be understood as indicating or implying their relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

1 to 5 , the water heater controlled by the present invention is an electric water heater as an example. The water heater includes an inner tank 200 for storing water and a heating device 300 for heating water. The bladder 200 and the housing 100 for keeping warm water, a water temperature detection device for detecting the water temperature, and a display panel 500 for displaying the water temperature. The temperature detection device 400 is used to detect the water temperature in the water heater inner tank 200; the temperature detection device 400 may be a temperature sensing probe, or any other temperature sensor that can detect the water temperature. The result of the water temperature detection can be the result of the latest detection, or the average value of multiple detections per unit time. For example, the temperature detection device 400 may take the temperature detected for the last time as the detected temperature, or may continuously detect 5 times within 2s, and then use the detection results of the 5 times as the detection value. It should be noted that the technical solution of the present invention is applicable to water storage type water heaters, including electric heating water storage type, combustion heat water storage type, and water storage type water heaters heated by other energy sources.

A water heater control method proposed below according to the above water heater structure includes the following steps:

S10. Count the times of water consumption in each water use time period of each day in the previous period, when the water use times of the water use time period is greater than or equal to the first preset times, the time period is a high frequency water use period; When the number of times is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is an intermediate-frequency water use period; when the water use time period of the water-use time period is less than the second preset number of times, the time period is a low-frequency water use period;

In this embodiment, the period is 21 days as an example, and each day is divided into six time periods, namely 3:00～7:00, 7:00～11:00, 11:00～15:00, 15:00～ 19:00, 19:00～23:00, 23:00～3:00. In each period, record the user's water consumption times and the water consumption each time. The total number of times of water use during the water use period is the total number of times of water use during the water use period within a period of 21 days. The number of times of water use per day in each time period may be different, such as the average water use from 7:00 to 11:00 from Monday to Friday. The frequency is 0.5, and the average frequency of water use between 7:00 and 11:00 on Saturday and Sunday is 3.5. The first preset number of times is 11 times as an example, and the second preset number of times is 6 times as an example. Of course, in some embodiments, it can be set according to user requirements. That is, when the user uses more than or equal to 11 times of water in a certain time period in 21 days, the time period is set as the high-frequency water consumption period, taking the time period 19:00-23:00 as an example; In a certain time period of the day, when the number of times of water use is greater than or equal to 6 times, but less than 11 times, the time period is set as the intermediate frequency water use period, taking the time period 7:00 to 11:00 as an example; When the number of times of water use in a certain time period is less than 6 times, the time period is set as the low-frequency water use period, taking the time period from 3:00 to 7:00 as an example. Through the statistics of the total water use times in the water use time period, the water use time period is divided into high frequency water use time period, medium frequency water use time period and low frequency water use time period.

Of course, before the statistics, it is necessary to set the heating control cycle, divide the time length of each cycle and the time period of water consumption, and record the water consumption of the user during each water consumption time, that is, the number of times of water consumption, the frequency of water consumption, the temperature of water consumption and the time period of water consumption. water consumption. This process is the learning process of the water heater. In the first cycle, the water parameters not set by the user are installed and run with preset parameters. For example, the heating time is preset to 19:00-23:00 and 7:00-11 every day. :00, the sleep time period is preset from 23:00 to 3:00, etc. The second over-cycle is set with reference to the user's water consumption in the first cycle, and the third cycle is adjusted with reference to the water consumption of the first and second cycles.

S20. Obtain the current water use period;

In this embodiment, the water heater is provided with a timing device, or the water heater can obtain the current time through the network. The water heater first obtains the current time, and then obtains the water use period corresponding to the current time according to the mapping table between the time and the water use period. For example, if the current time is 20:00, and the time period corresponding to 20:00 is 19:00-23:00, the current time period is the high-frequency water use time period; similarly, if the current time is 3:00, the The time period corresponding to 4:00 is from 3:00 to 7:00, and the current time period is the low-frequency water consumption time period.

S30. Adjust the working state of the water heater according to the current water use period.

In this embodiment, during the high-frequency water use period, the user uses a lot of water and the water consumption is large. At this time, the water heater can select a heating device with high power and a longer heating time. During the medium-frequency water use period, the user does not use water many times and the water consumption is not large. At this time, the water heater can choose a heating device with a lower power and shorten the heating time. During the low-frequency water use period, the user uses less water and less water consumption. At this time, the water heater can choose a heating device with low power and further shorten the heating time. The above are the directions of the working state of the water heater, and the specific heating mode and heating state can be further adjusted according to the user's water habits and real-time adjustment. For example, during the low-frequency water use period, the water heater can be set to a dormant state or even a shutdown state according to the user's water habits.

In this embodiment, the water heater first counts the number of times of water consumption in each water use time period of each day in the previous cycle, wherein the water use time period includes high frequency water use period, medium frequency water use period and low frequency water use period; or equal to the first preset number of times, the time period is a high-frequency water use period; when the water use time period of the water use time period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is a medium-frequency water use period; When the number of times of water use in the water use time period is less than the second preset number of times, the time period is a low-frequency water use time period; then the current water use time period is obtained according to the current time; then the working state of the water heater is adjusted according to the current water use time period; in the above technical solution, the water heater will The user's water consumption period is divided into high frequency water consumption period, medium frequency water consumption period and low frequency water consumption period, and then the working state of the water heater is adjusted according to the water consumption in different time periods, so that the water heater can meet the user's water consumption and reduce the energy consumption of the water heater. .

In order to further improve the timeliness of water supply to the water heater and reduce the energy consumption of the water heater, the steps of adjusting the heating power of the water heater according to the current water use period include:

S31. When the current water consumption period is the high-frequency water consumption period, adjust the working state of the water heater to the heating state; in the high-frequency water consumption period, the user uses a lot of water and the water consumption is large. At this time, the water heater can choose a heating device with high power to heat. Of course, during the heating process, specific heating conditions can be set according to the user's water habit or the user's instruction.

S32. When the current water consumption period is the intermediate frequency water consumption period, adjust the working state of the water heater to the heat preservation state; in the intermediate frequency water consumption period, the user uses less water and the demand for hot water is small, at this time, the water heater is set to the heat preservation state , or in a low-temperature heating state, it can satisfy the user's water consumption. The heat preservation in this embodiment refers to keeping the water in the inner tank at a certain preset temperature, and the temperature is 30°C to 45°C.

S33, when the current water use period is the low-frequency water use period, adjust the working state of the water heater to the dormant state. During the low-frequency water use time period, the user's water use frequency is very small and the demand for hot water is small.

In order to heat the hot water more accurately, the step of adjusting the heating power of the water heater according to the current water usage period includes:

When the current water consumption period is the high-frequency water consumption period, calculate the average water consumption during the high-frequency water consumption period, and when the average water consumption is greater than or equal to the first preset water consumption, the current water consumption period is the high temperature period;

In this embodiment, in the high-frequency water consumption period, the water consumption of each water consumption in all high-frequency water consumption periods is counted, the total water consumption in each high-frequency water consumption period is calculated, and then the total water consumption is divided by the total water consumption. days, to obtain the average water consumption per day for each time period in the cycle. For example, first calculate the water consumption from 19:00 to 23:00 every day in 21 days, and then add up the water consumption of the 21 time periods in the cycle to obtain the total water consumption in the period from 19:00 to 23:00, and then use Divide the total water consumption by the 21 days in the cycle to obtain the average water consumption per day for the time period. The average water consumption is compared with the first preset water consumption, and when the average water consumption is greater than or equal to the first preset water consumption, the time period corresponding to the average water consumption is a high temperature time period. The first preset water consumption is 20L as an example, that is, when the average water consumption in the time period from 19:00 to 23:00 is greater than or equal to 20L, the time period from 19:00 to 23:00 is a high temperature time period. Correspondingly, when the average water consumption is less than the first preset water consumption, the time period corresponding to the average water consumption is a low temperature time period. The first preset water consumption is 20L as an example, that is, when the average water consumption in the time period from 7:00 to 11:00 is less than 20L, the time period from 7:00 to 11:00 is a low temperature time period.

The water temperature in the water heater is heated to the first preset temperature during the high temperature period.

When the current water use period is the high temperature period, the water temperature in the inner tank is heated to the first preset water temperature by the heating device. The first preset water temperature may be set by the water heater, or may be set by the user. The water temperature of the first preset water temperature is a relatively high water temperature, such as 70°C. During the high temperature period, the water frequency and water consumption are relatively large, and only a relatively high water temperature can meet the needs of the user.

In order to improve the energy-saving efficiency of the water heater, the steps of adjusting the heating power of the water heater according to the current water use period include:

When the current water consumption period is the high frequency water consumption period, the average water consumption during the high frequency water consumption period is calculated. When the average water consumption is less than the first preset water consumption, the current water consumption period is the low temperature period; The water temperature inside is heated to the second preset temperature.

In this embodiment, the second preset water temperature is lower than the first preset water temperature, and in the low temperature time period, the user uses more water, but each time the water consumption is low. In order to ensure the user's water consumption without wasting energy, it is a very good choice to heat the water temperature to a second preset water temperature lower than the first preset water temperature. As for the specific value of the second preset water temperature, it can be set by the water heater by default, or can be set by the user according to actual needs. Of course, there can also be a comparison table of water temperature and water consumption, and the water consumption corresponds to the high water temperature. By setting the low temperature time period, and heating the water temperature in the water heater to the second preset water temperature during the low temperature time period, while satisfying the user's water consumption, try to save electric energy and avoid excess hot water.

In order to improve the energy-saving efficiency of the water heater, the steps of adjusting the heating power of the water heater according to the current water use period include:

When the current water consumption period is the intermediate frequency water consumption period, the average water consumption in the intermediate frequency water consumption period is calculated. When the average water consumption is greater than or equal to the second preset water consumption, the current water consumption period is the heat preservation time period; within the heat preservation time period, the The working state of the water heater is adjusted to keep warm.

In this embodiment, in the intermediate frequency water consumption period, the water consumption of each water consumption in all intermediate frequency water consumption periods is counted, the total water consumption in each intermediate frequency water consumption period is calculated, and then the total water consumption is divided by the total number of days of water consumption to obtain Average water consumption per day for each time period in the cycle. For example, first calculate the water consumption from 7:00 to 11:00 every day in 21 days, and then add up the water consumption of the 21 time periods in the cycle to obtain the total water consumption in the period from 7:00 to 11:00, and then use Divide the total water consumption by the 21 days in the cycle to obtain the average water consumption per day for the time period. The average water consumption is compared with the second preset water consumption, and when the average water consumption is greater than or equal to the second preset water consumption, the time period corresponding to the average water consumption is the heat preservation time period. The second preset water consumption is 10L as an example, that is, when the average water consumption in the time period 7:00-11:00 is greater than or equal to 10L, the time period 7:00-11:00 is the holding time period. Correspondingly, when the average water consumption is less than the second preset water consumption, the time period corresponding to the average water consumption is the standby time period. The second preset water consumption is 10L as an example, that is, when the average water consumption in the time period 3:00-7:00 is less than 10L, the time period 3:00-7:00 is the standby time period.

The present invention further provides a water heater, comprising:

The statistics module 10 is used to count the times of water use in each water use time period of each day in the previous cycle. When the water use times of the water use time period is greater than or equal to the first preset times, the time period is a high frequency water use period; when the water use time period is greater than or equal to the first preset times When the number of times of water use in the time period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is an intermediate frequency water use period; when the water use times of the water use time period are less than the second preset times, the time period is a low frequency period water time;

In this embodiment, the period is 21 days as an example, and each day is divided into six time periods, namely 3:00～7:00, 7:00～11:00, 11:00～15:00, 15:00～ 19:00, 19:00～23:00, 23:00～3:00. In each period, record the user's water consumption times and the water consumption each time. The total number of times of water use during the water use period is the total number of times of water use during the water use period within a period of 21 days. The number of times of water use per day in each time period may be different, such as the average water use from 7:00 to 11:00 from Monday to Friday. The frequency is 0.5, and the average frequency of water use between 7:00 and 11:00 on Saturday and Sunday is 3.5. The first preset number of times is 11 times as an example, and the second preset number of times is 6 times as an example. Of course, in some embodiments, it can be set according to user requirements. That is, when the user uses more than or equal to 11 times of water in a certain time period in 21 days, the time period is set as the high-frequency water consumption period, taking the time period 19:00-23:00 as an example; In a certain time period of the day, when the number of times of water use is greater than or equal to 6 times, but less than 11 times, the time period is set as the intermediate frequency water use period, taking the time period 7:00 to 11:00 as an example; When the number of times of water use in a certain time period is less than 6 times, the time period is set as the low-frequency water use period, taking the time period from 3:00 to 7:00 as an example. Through the statistics of the total water use times in the water use time period, the water use time period is divided into high frequency water use time period, medium frequency water use time period and low frequency water use time period.

Of course, before the statistics, it is necessary to set the heating control cycle, divide the time length of each cycle and the time period of water consumption, and record the water consumption of the user during each water consumption time, that is, the number of times of water consumption, the frequency of water consumption, the temperature of water consumption and the time period of water consumption. water consumption. This process is the learning process of the water heater. In the first cycle, the water parameters not set by the user are installed and run with preset parameters. For example, the heating time is preset to 19:00-23:00 and 7:00-11 every day. :00, the sleep time period is preset from 23:00 to 3:00, etc. The second over-cycle is set with reference to the user's water consumption in the first cycle, and the third cycle is adjusted with reference to the water consumption of the first and second cycles.

an acquisition module 20 for acquiring the current water use period;

In this embodiment, the water heater is provided with a timing device, or the water heater can obtain the current time through the network. The water heater first obtains the current time, and then obtains the water use period corresponding to the current time according to the mapping table between the time and the water use period. For example, if the current time is 20:00, and the time period corresponding to 20:00 is 19:00-23:00, the current time period is the high-frequency water use time period; similarly, if the current time is 3:00, the The time period corresponding to 4:00 is from 3:00 to 7:00, and the current time period is the low-frequency water consumption time period.

The control module 30 is configured to adjust the working state of the water heater according to the current water usage period.

In this embodiment, during the high-frequency water use period, the user uses a lot of water and the water consumption is large. At this time, the water heater can select a heating device with high power and a longer heating time. During the medium-frequency water use period, the user does not use water many times and the water consumption is not large. At this time, the water heater can choose a heating device with a lower power and shorten the heating time. During the low-frequency water use period, the user uses less water and less water consumption. At this time, the water heater can choose a heating device with low power and further shorten the heating time. The above are the directions of the working state of the water heater, and the specific heating mode and heating state can be further adjusted according to the user's water habits and real-time adjustment. For example, during the low-frequency water use period, the water heater can be set to a dormant state or even a shutdown state according to the user's water habits.

In this embodiment, the water heater first counts the number of times of water consumption in each water use time period of each day in the previous cycle, wherein the water use time period includes high frequency water use period, medium frequency water use period and low frequency water use period; or equal to the first preset number of times, the time period is a high-frequency water use period; when the water use time period of the water use time period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is a medium-frequency water use period; When the number of times of water use in the water use time period is less than the second preset number of times, the time period is a low-frequency water use time period; then the current water use time period is obtained according to the current time; then the working state of the water heater is adjusted according to the current water use time period; in the above technical solution, the water heater will The user's water consumption period is divided into high frequency water consumption period, medium frequency water consumption period and low frequency water consumption period, and then the working state of the water heater is adjusted according to the water consumption in different time periods, so that the water heater can meet the user's water consumption and reduce the energy consumption of the water heater. .

In order to further improve the timeliness of water heater water supply and reduce the energy consumption of the water heater, the control module includes:

The heating unit 31 is used to adjust the working state of the water heater to the heating state when the current water usage period is the high-frequency water consumption period; during the high-frequency water consumption period, the user uses a lot of water and the water consumption is large. At this time, the water heater can select the power Large heating unit for heating. Of course, during the heating process, specific heating conditions can be set according to the user's water habit or the user's instruction.

The heat preservation unit 32 is used to adjust the working state of the water heater to the heat preservation state when the current water use time period is the intermediate frequency water use time period. The water heater can be set to the heat preservation state or the low temperature heating state, which can satisfy the user's water consumption. The heat preservation in this embodiment refers to keeping the water in the inner tank at a certain preset temperature, and the temperature is 30°C to 45°C.

The sleep unit 33 is configured to adjust the working state of the water heater to the sleep state when the current water consumption period is the low frequency water consumption period. During the low-frequency water use time period, the user's water use frequency is very small and the demand for hot water is small.

In order to heat hot water more accurately, the control module includes:

The first calculation unit is configured to calculate the average water consumption during the high-frequency water consumption period when the current water consumption period is the high-frequency water consumption period, and when the average water consumption is greater than or equal to the first preset water consumption, the current water consumption period is the high temperature period part;

In this embodiment, in the high-frequency water consumption period, the water consumption of each water consumption in all high-frequency water consumption periods is counted, the total water consumption in each high-frequency water consumption period is calculated, and then the total water consumption is divided by the total water consumption. days, to obtain the average water consumption per day for each time period in the cycle. For example, first calculate the water consumption from 19:00 to 23:00 every day in 21 days, and then add up the water consumption of the 21 time periods in the cycle to obtain the total water consumption in the period from 19:00 to 23:00, and then use Divide the total water consumption by the 21 days in the cycle to obtain the average water consumption per day for the time period. The average water consumption is compared with the first preset water consumption, and when the average water consumption is greater than or equal to the first preset water consumption, the time period corresponding to the average water consumption is a high temperature time period. The first preset water consumption is 20L as an example, that is, when the average water consumption in the time period from 19:00 to 23:00 is greater than or equal to 20L, the time period from 19:00 to 23:00 is a high temperature time period. Correspondingly, when the average water consumption is less than the first preset water consumption, the time period corresponding to the average water consumption is a low temperature time period. The first preset water consumption is 20L as an example, that is, when the average water consumption in the time period from 7:00 to 11:00 is less than 20L, the time period from 7:00 to 11:00 is a low temperature time period.

The first heating unit is used for heating the water temperature in the water heater to a first preset temperature during a high temperature period.

When the current water use period is the high temperature period, the water temperature in the inner tank is heated to the first preset water temperature by the heating device. The first preset water temperature may be set by the water heater, or may be set by the user. The water temperature of the first preset water temperature is a relatively high water temperature, such as 70°C. During the high temperature period, the water frequency and water consumption are relatively large, and only a relatively high water temperature can meet the needs of the user.

In order to improve the energy saving efficiency of the water heater, the control module includes:

The second calculation unit is configured to calculate the average water consumption during the high-frequency water consumption period when the current water consumption period is the high-frequency water consumption period, and when the average water consumption is less than the first preset water consumption, the current water consumption period is the low-temperature period; The second heating unit is used for heating the water temperature in the water heater to a second preset temperature within a low temperature period.

In this embodiment, the second preset water temperature is lower than the first preset water temperature, and in the low temperature time period, the user uses more water, but each time the water consumption is low. In order to ensure the user's water consumption without wasting energy, it is a very good choice to heat the water temperature to a second preset water temperature lower than the first preset water temperature. As for the specific value of the second preset water temperature, it can be set by the water heater by default, or can be set by the user according to actual needs. Of course, there can also be a comparison table of water temperature and water consumption, and the water consumption corresponds to the high water temperature. By setting the low temperature time period, and heating the water temperature in the water heater to the second preset water temperature during the low temperature time period, while satisfying the user's water consumption, try to save electric energy and avoid excess hot water.

In order to improve the energy saving efficiency of the water heater, the control module includes:

a third calculation unit, configured to calculate the average water consumption during the intermediate frequency water consumption period when the current water consumption period is the intermediate frequency water consumption period, and when the average water consumption is greater than or equal to the second preset water consumption period, the current water consumption period is the heat preservation period; The heat preservation unit is used to adjust the working state of the water heater to heat preservation during the heat preservation time period.

In this embodiment, in the intermediate frequency water consumption period, the water consumption of each water consumption in all intermediate frequency water consumption periods is counted, the total water consumption in each intermediate frequency water consumption period is calculated, and then the total water consumption is divided by the total number of days of water consumption to obtain Average water consumption per day for each time period in the cycle. For example, first calculate the water consumption from 7:00 to 11:00 every day in 21 days, and then add up the water consumption of the 21 time periods in the cycle to obtain the total water consumption in the period from 7:00 to 11:00, and then use Divide the total water consumption by the 21 days in the cycle to obtain the average water consumption per day for the time period. The average water consumption is compared with the second preset water consumption, and when the average water consumption is greater than or equal to the second preset water consumption, the time period corresponding to the average water consumption is the heat preservation time period. The second preset water consumption is 10L as an example, that is, when the average water consumption in the time period 7:00-11:00 is greater than or equal to 10L, the time period 7:00-11:00 is the holding time period. Correspondingly, when the average water consumption is less than the second preset water consumption, the time period corresponding to the average water consumption is the standby time period. The second preset water consumption is 10L as an example, that is, when the average water consumption in the time period 3:00-7:00 is less than 10L, the time period 3:00-7:00 is the standby time period.

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (6)

1. A control method for a water heater, comprising the following steps: Count the times of water use in each water use time period of each day in the previous cycle. When the water use times of the water use time period is greater than or equal to the first preset times, the time period is a high-frequency water use period; When the number of times of water use in the water use time period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is an intermediate frequency water use period; When the number of times of water use in the water use time period is less than the second preset number of times, the time period is a low frequency water use period; Get the current water usage period; Adjust the working state of the water heater according to the current water use period; The step of adjusting the heating power of the water heater according to the current water use period includes: When the current water consumption period is the high-frequency water consumption period, calculate the average water consumption during the high-frequency water consumption period, and when the average water consumption is greater than or equal to the first preset water consumption, the current water consumption period is the high temperature period; heating the water temperature in the water heater to the first preset temperature during the high temperature period; When the current water consumption period is the high-frequency water consumption period, the average water consumption during the high-frequency water consumption period is calculated, and when the average water consumption is less than the first preset water consumption, the current water consumption period is the low temperature period; heating the water temperature in the water heater to a second preset temperature during the low temperature period; The second preset temperature is smaller than the first preset temperature. 2. The water heater control method according to claim 1, wherein the step of adjusting the heating power of the water heater according to the current water use period comprises: When the current water consumption period is the high frequency water consumption period, adjust the working state of the water heater to the heating state; When the current water use period is the intermediate frequency water use period, adjust the working state of the water heater to the heat preservation state; When the current water consumption period is the low frequency water consumption period, the working state of the water heater is adjusted to the dormant state. 3. The water heater control method according to claim 1 or 2, wherein the step of adjusting the heating power of the water heater according to the current water use period comprises: When the current water consumption period is the intermediate frequency water consumption period, the average water consumption during the intermediate frequency water consumption period is calculated, and when the average water consumption is greater than or equal to the second preset water consumption, the current water consumption period is the heat preservation period; During the heat preservation time period, the working state of the water heater is adjusted to heat preservation. 4. A water heater, characterized in that, comprising: The statistics module is used to count the times of water consumption in each water use time period of each day in the previous cycle. When the water use times of the water use time period is greater than or equal to the first preset times, the time period is a high-frequency water use period; When the number of times of water use in the water usage period is greater than or equal to the second preset number of times and less than the first preset number of times, the time period is the intermediate frequency water use period; when the water use time period of the water use time period is less than the second preset number of times, the time period is the low frequency water use period period; The acquisition module is used to acquire the current water usage period; The control module is used to adjust the working state of the water heater according to the current water usage period; The control module includes: The first calculation unit is configured to calculate the average water consumption during the high-frequency water consumption period when the current water consumption period is the high-frequency water consumption period, and when the average water consumption period is greater than or equal to the first preset water consumption, the current water consumption period is the high temperature period part; a first heating unit for heating the water temperature in the water heater to a first preset temperature during a high temperature period; The second calculation unit is configured to calculate the average water consumption during the high-frequency water consumption period when the current water consumption period is the high-frequency water consumption period, and when the average water consumption is less than the first preset water consumption period, the current water consumption period is the low-temperature period; a second heating unit, configured to heat the water temperature in the water heater to a second preset temperature within a low temperature period; The second preset temperature is smaller than the first preset temperature. 5. The water heater of claim 4, wherein the control module comprises: The heating unit is used to adjust the working state of the water heater to the heating state when the current water consumption period is the high-frequency water consumption period; The heat preservation unit is used to adjust the working state of the water heater to the heat preservation state when the current water use time period is the intermediate frequency water use time period; The dormancy unit is used for adjusting the working state of the water heater to the dormant state when the current water consumption period is the low frequency water consumption period. 6. The water heater of claim 4, wherein the control module comprises: a third calculation unit, configured to calculate the average water consumption during the intermediate frequency water consumption period when the current water consumption period is the intermediate frequency water consumption period, and when the average water consumption is greater than or equal to the second preset water consumption period, the current water consumption period is the heat preservation period; The heat preservation unit is used to adjust the working state of the water heater to heat preservation during the heat preservation time period.

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