CN108286819B - Electric water heater and control method thereof - Google Patents
Electric water heater and control method thereof Download PDFInfo
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- CN108286819B CN108286819B CN201710014303.2A CN201710014303A CN108286819B CN 108286819 B CN108286819 B CN 108286819B CN 201710014303 A CN201710014303 A CN 201710014303A CN 108286819 B CN108286819 B CN 108286819B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
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Abstract
The invention discloses an electric water heater and a control method thereof, wherein the control method of the electric water heater comprises the following steps: receiving a time length control instruction of a user, and acquiring a target water using time length according to the time length control instruction; calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water consumption duration, the preset mixed water temperature and/or the preset mixed water flow rate; and selecting a preset heating assembly according to the target hot water quantity and/or the target hot water temperature. According to the technical scheme, the water consumption time length required by a user is taken as a basis, the water consumption condition of the user is combined, the current water quantity and the current water temperature of hot water are calculated, and a proper heating component is selected according to the water quantity and the water temperature of the hot water, so that the water consumption requirement of the user is met, and meanwhile, the energy consumption of the electric water heater is reduced.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to an electric water heater and a control method thereof.
Background
Along with the improvement of living standard of people, people have higher and higher requirements on energy conservation of water heaters. The existing electric water heater can not accurately know the water using time and the water using amount of a user, so that a proper amount of hot water can not be accurately heated, the phenomenon of water shortage or excessive hot water can occur when the user uses water, and the existing electric water heater can not meet the requirements of the user on the use of the water heater.
Disclosure of Invention
The invention mainly aims to provide a water heater, which aims to meet the water demand of a user and reduce the energy consumption of the water heater at the same time.
In order to achieve the above purpose, the control method of the electric water heater provided by the invention comprises the following steps:
receiving a time length control instruction of a user, and acquiring a target water using time length according to the time length control instruction;
calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water consumption duration, the preset mixed water temperature and/or the preset mixed water flow rate;
and selecting a preset heating assembly according to the target hot water quantity and/or the target hot water temperature, wherein the electric water heater comprises at least two groups of heating assemblies.
Preferably, the step of selecting the preset heating assembly according to the target hot water amount and/or the target hot water temperature includes:
when the target hot water amount is larger than or equal to a first preset water amount and the target hot water temperature is larger than or equal to a first preset water temperature, selecting a first heating assembly to heat for a first preset time;
when the target hot water amount is larger than or equal to a first preset water amount, and the target hot water temperature is smaller than a first preset water temperature and larger than or equal to a second preset water temperature, selecting a second heating assembly to heat for a second preset time;
and when the target hot water amount is greater than or equal to the first preset water amount and the target hot water temperature is less than the second preset water temperature, selecting a third heating assembly to heat for a third preset time.
Preferably, the step of selecting the preset heating assembly according to the target hot water amount and/or the target hot water temperature includes:
when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount, and the target hot water temperature is greater than or equal to a first preset water temperature, selecting a fourth heating assembly to heat for a fourth preset time;
when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount, and meanwhile, the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature, selecting a fifth heating assembly to heat for a fifth preset time;
and when the target hot water amount is greater than or equal to a second preset water amount and less than the first preset water amount and the target hot water temperature is less than a second preset water temperature, selecting a sixth heating assembly to heat for a sixth preset time.
Preferably, the step of selecting the preset heating assembly according to the target hot water amount and/or the target hot water temperature includes:
when the target hot water amount is less than the second preset water amount and the target hot water temperature is greater than or equal to the first preset water temperature, selecting a seventh heating assembly to heat for a seventh preset time period;
when the target hot water amount is less than a second preset water amount, and the target hot water temperature is less than the first preset water temperature and greater than or equal to the second preset water temperature, selecting an eighth heating assembly to heat for an eighth preset time period;
and when the target hot water amount is smaller than the second preset water amount and the target hot water temperature is smaller than the second preset water temperature, selecting a ninth heating assembly to heat for a ninth preset time.
Preferably, the control method of the electric water heater further comprises the steps of: the method comprises the steps of obtaining the current water mixing temperature, and stopping heating of a heating assembly when the current water mixing temperature is larger than or equal to a second preset temperature; the second preset water temperature is 48-58 ℃.
Preferably, the step of calculating the target hot water volume and/or the target hot water temperature of the required hot water according to the target water usage duration, the preset mixed water temperature and/or the preset mixed water flow rate includes:
receiving an adjusting instruction for adjusting the preset mixed water temperature and/or the preset mixed water flow rate;
adjusting the preset mixed water temperature to be the set mixed water temperature and/or adjusting the preset mixed water flow rate to be the set mixed water flow rate according to the adjusting instruction;
and calculating the target hot water quantity and the target hot water temperature of the required hot water according to the target water using duration, the set mixed water temperature or the preset mixed water temperature and the set mixed water flow rate or the preset mixed water flow rate.
In order to better achieve the object of the invention, the invention further provides an electric water heater comprising:
the receiving module is used for receiving a time length control instruction of a user and acquiring target water using time length according to the time length control instruction;
the calculating module is used for calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water using duration, the preset mixed water temperature and/or the preset mixed water flow rate;
and the heating module is used for selecting a preset heating assembly according to the target hot water quantity and/or the target hot water temperature.
Preferably, the heating module comprises:
the first heating unit is used for selecting a first heating assembly to heat for a first preset time when the target hot water amount is greater than or equal to a first preset water amount and the target hot water temperature is greater than or equal to a first preset water temperature;
the second heating unit is used for selecting a second heating assembly to heat for a second preset time when the target hot water amount is greater than or equal to a first preset water amount and the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature;
and the third heating unit is used for selecting a third heating assembly to heat for a third preset time when the target hot water amount is greater than or equal to the first preset water amount and the target hot water temperature is less than the second preset water temperature.
Preferably, the heating module comprises:
the fourth heating unit is used for selecting a fourth heating component to heat for a fourth preset time when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount and the target hot water temperature is greater than or equal to a first preset water temperature;
the fifth heating unit is used for selecting a fifth heating component to heat for a fifth preset time when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount and the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature;
and the sixth heating unit is used for selecting a sixth heating component to heat for a sixth preset time when the target hot water amount is greater than or equal to the second preset water amount and less than the first preset water amount and the target hot water temperature is less than the second preset water temperature.
Preferably, the heating module comprises:
the seventh heating unit is used for selecting a seventh heating assembly to heat for a seventh preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is greater than or equal to the first preset water temperature;
the eighth heating unit is used for selecting the eighth heating assembly to heat for an eighth preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is less than the first preset water temperature and greater than or equal to the second preset water temperature;
and the ninth heating unit is used for selecting the ninth heating component to heat for a ninth preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is less than the second preset water temperature.
Preferably, the electric water heater further comprises a safety module, wherein the safety module is used for acquiring the current mixed water temperature, and when the current mixed water temperature is greater than or equal to a second preset water temperature, the heating assembly stops heating; the second preset water temperature is 48-58 ℃.
Preferably, the calculation module comprises:
the receiving unit is used for receiving an adjusting instruction for adjusting the preset mixed water temperature and/or the preset mixed water flow rate;
the adjusting unit is used for adjusting the preset mixed water temperature to be the set mixed water temperature and/or adjusting the preset mixed water flow rate to be the set mixed water flow rate according to the adjusting instruction;
a calculating unit for calculating a target hot water volume and a target hot water temperature of the required hot water according to the target water usage duration, the set mixed water temperature or the preset mixed water temperature, and the set mixed water flow rate or the preset mixed water flow rate
In the invention, an electric water heater receives a time length control instruction of a user and acquires a target water using time length according to the time length control instruction; calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water consumption duration, the preset mixed water temperature and/or the preset mixed water flow rate; then, selecting a preset heating assembly according to the target hot water quantity and/or the target hot water temperature; according to the technical scheme, the water consumption time length required by a user is taken as a basis, the water consumption condition of the user is combined, the current water quantity and the current water temperature of the required hot water are calculated, and the proper heating component is selected according to the water quantity and the water temperature of the required hot water, so that the water consumption requirement of the user is met, and meanwhile, the energy consumption of the electric water heater is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an electric water heater according to the present invention;
FIG. 2 is a schematic flow chart illustrating a control method of an electric water heater according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating another embodiment of a control method of an electric water heater according to the present invention;
FIG. 4 is a functional block diagram of an embodiment of an electric water heater according to the present invention;
fig. 5 is a schematic diagram of functional modules of another embodiment of the electric water heater according to the present invention.
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
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 5, the water heater controlled by the present invention is exemplified by an electric water heater, which includes an inner container 200 for storing water, a heating device 300 for heating water, a casing 100 disposed outside the inner container 200 for protecting the inner container 200 and the insulation water, a water temperature detecting device for detecting a water temperature, and a display panel 500 for displaying the water temperature. The temperature detection device 400 is used for detecting the temperature of water in the water heater liner 200; the temperature detecting device 400 may be a temperature sensing probe or any other temperature sensor capable of detecting the temperature of water. The result of the water temperature detection can be the result of the latest detection or the average value of a plurality of detections in unit time. For example, the temperature detection device 400 may use the last detected temperature as the detected temperature, or may detect the last detected temperature for 5 times within 2 seconds, and then use the detection result of the 5 times as the detection value.
The following control method of the electric water heater provided according to the above structure of the electric water heater comprises the following steps:
s10, receiving a time length control instruction of a user, and acquiring a target water using time length according to the time length control instruction;
in this embodiment, there are various ways for a user to send a duration control instruction to an electric water heater, for example, the user may send the duration control instruction through a wireless network by using a mobile terminal (e.g., a remote controller, a mobile phone, a tablet electric energy, an intelligent bracelet, an intelligent watch, etc.), or may send the duration control instruction directly through a physical key. After the electric water heater obtains the duration control instruction, the target water usage duration corresponding to the duration control instruction is obtained according to a mapping table of a preset duration control instruction and the target water usage duration. The electric water heater knows how long the user needs to use the water according to the time length control instruction of the user, namely, the electric water heater obtains the time length of water supply needed for the user.
S20, calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water consumption duration, the preset mixed water temperature and/or the preset mixed water flow rate;
in this embodiment, after the target water usage duration is obtained, the target hot water volume and/or the target hot water temperature of the required hot water are calculated according to the target water usage duration, the preset mixed water temperature and/or the preset mixed water flow rate. The target hot water temperature is higher than the preset mixed water temperature, and the target hot water amount is smaller than or equal to the capacity of the inner container. Of course, in some embodiments, the target amount of hot water (the required amount of hot water) may also be greater than the bladder capacity, at which point the entire water usage period may need to be scheduled. The target hot water temperature and the target hot water amount are proportional to the target water using time, the preset mixed water temperature and the preset mixed water flow rate, namely, when the target water using time is longer, the preset mixed water temperature is higher, and the preset mixed water flow rate is faster, the target hot water temperature is higher, and the target hot water amount is larger. That is, the longer the user needs to use water, the higher the temperature of the water, and the faster the flow rate of the water, the higher the temperature of the water to be heated, and the more the amount of water to be heated. Wherein, muddy water temperature and muddy water velocity of flow can preset, and the user also can adjust according to actual conditions. The real-time water consumption condition of the user is considered, and under the condition that the target water consumption time length is not changed, the target hot water quantity and the target hot water temperature are changed along with the mixed water temperature and the mixed water flow rate in real time, so that the heating condition of the electric water heater always takes the target water consumption time length as a reference, and the water consumption condition of the user is met with the lowest energy consumption.
The target hot water temperature and the target hot water quantity satisfy an inverse correlation relationship, that is, when the target hot water temperature rises, the target hot water quantity can be correspondingly reduced; when the target hot water temperature decreases, the target hot water amount needs to be increased accordingly.
Of course, in some embodiments, since the capacity of the inner container is fixed, the target hot water amount is the capacity of the inner container, and the commonly used target hot water temperature can be calculated at this time.
And S30, selecting a preset heating assembly according to the target hot water quantity and/or the target hot water temperature.
In this embodiment, different heating assemblies are provided for different target hot water amounts and target hot water temperatures. Since the heating time period (target water use time period) is fixed, both the target hot water temperature and the target hot water amount are positively correlated with the power of the heating assembly. That is, the higher the target hot water temperature is, the more the target hot water amount is, the higher the heating power of the heating element corresponding thereto is; the lower the target hot water temperature is, the smaller the target hot water amount is, the lower the heating power of the heating element corresponding thereto is.
In the embodiment, a time length control instruction of a user is received through an electric water heater, and a target water using time length is obtained according to the time length control instruction; calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water consumption duration, the preset mixed water temperature and/or the preset mixed water flow rate; then, selecting a preset heating assembly according to the target hot water quantity and/or the target hot water temperature; according to the technical scheme, the water consumption time length required by a user is taken as a basis, the water consumption condition of the user is combined, the current water quantity and the current water temperature of the required hot water are calculated, and the proper heating component is selected according to the water quantity and the water temperature of the required hot water, so that the water consumption requirement of the user is met, and meanwhile, the energy consumption of the electric water heater is reduced.
In order to select the heating component more accurately so as to further reduce the energy consumption of the electric water heater, the step of selecting the preset heating component according to the target hot water amount and/or the target hot water temperature comprises the following steps:
s31, when the target hot water amount is larger than or equal to a first preset water amount and the target hot water temperature is larger than or equal to a first preset water temperature, selecting a first heating assembly to heat for a first preset time;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs a large amount of high-temperature hot water, and should select a heating component with higher heating power. The first predetermined water amount is 100L, the first predetermined water temperature is 70 degrees celsius, and the heating power of the first heating element is 1500W, i.e. when the target hot water amount is more than or equal to 100L and the target hot water temperature is higher than or equal to 70 degrees celsius, the 1500W heating element is turned on.
It is worth to be noted that the first preset time period and the second to ninth preset time periods appearing in the following embodiments are all less than or equal to the target water usage time period. When all water parameters are not changed, the water heater uses the same group of heating components from the beginning to the end of heating, at the moment, the preset time length is equal to the target water using time length, namely, the water is heated until the user stops using the water, and at the moment, the hot water is just used up. When the water use parameter of the user is changed, the working heating assembly is switched from the first heating assembly to the ninth heating assembly, and at the moment, the sum of the first preset time length to the ninth preset time length is equal to the target water use time length. Therefore, the energy consumption of the water heater is reduced to the minimum while water consumption of a user is guaranteed.
S32, when the target hot water amount is larger than or equal to a first preset water amount, and the target hot water temperature is smaller than a first preset water temperature and larger than or equal to a second preset water temperature, selecting a second heating assembly to heat for a second preset time;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs more medium-temperature hot water, and should select a heating component with high heating power. The first predetermined water amount is 100L, the second predetermined water temperature is 60 degrees celsius, and the heating power of the second heating element is 1200W, i.e. when the target hot water amount is more than or equal to 100L and the target hot water temperature is lower than 70 degrees celsius and higher than 60 degrees celsius, the 1200W heating element is turned on.
And S33, when the target hot water amount is greater than or equal to the first preset water amount and the target hot water temperature is less than the second preset water temperature, selecting the third heating assembly to heat for a third preset time.
In this embodiment, the target hot water amount is large, and the target hot water temperature is low, and at this time, the user needs more low-temperature hot water, and should select the heating component with low heating power. The first predetermined water amount is 100L, the second predetermined water temperature is 60 degrees celsius, and the heating power of the third heating element is 1000W, i.e. when the target hot water amount is more than or equal to 100L and the target hot water temperature is lower than 60 degrees celsius, the 1000W heating element is turned on.
In this embodiment, according to the relationship between the specific target hot water amount and the first preset water amount, and the relationship between the target hot water amount and the first preset water temperature, the second preset water temperature, the first heating assembly, the second heating assembly, and the third heating assembly are respectively selected, so that the selection of the heating assemblies is more detailed and accurate, and the energy consumption of the water heater is further reduced.
In order to select the heating component more accurately so as to further reduce the energy consumption of the electric water heater, the step of selecting the preset heating component according to the target hot water amount and/or the target hot water temperature comprises the following steps:
when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount, and the target hot water temperature is greater than or equal to a first preset water temperature, selecting a fourth heating assembly to heat for a fourth preset time;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs a large amount of high-temperature hot water, and should select a heating assembly with a higher heating power. The first predetermined water amount is 100L, the second predetermined water amount is 80L, the first predetermined water temperature is 70 degrees celsius, and the heating power of the fourth heating element is 1300W, i.e. when the target hot water amount is more than or equal to 80L and less than 100L, and the target hot water temperature is higher than or equal to 70 degrees celsius, the 1300W heating element is turned on.
When the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount, and meanwhile, the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature, selecting a fifth heating assembly to heat for a fifth preset time;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs more medium-temperature hot water, and should select a heating component with higher heating power. The first predetermined water amount is 100L, the second predetermined water amount is 80L, the second predetermined water temperature is 60 degrees celsius, and the heating power of the fifth heating element is 1100W, i.e. when the target hot water amount is more than or equal to 80L and less than 100L, and the target hot water temperature is lower than 70 degrees celsius and higher than 60 degrees celsius, the heating element of 1100W is turned on.
And when the target hot water amount is greater than or equal to a second preset water amount and less than the first preset water amount and the target hot water temperature is less than a second preset water temperature, selecting a sixth heating assembly to heat for a sixth preset time.
In this embodiment, the target hot water amount is large, and the target hot water temperature is low, and at this time, the user needs large amount of low-temperature hot water, and should select a heating component with low heating power. The heating power of the sixth heating element is 900W for example.
In order to select the heating component more accurately so as to further reduce the energy consumption of the electric water heater, the step of selecting the preset heating component according to the target hot water amount and/or the target hot water temperature comprises the following steps:
when the target hot water amount is less than the second preset water amount and the target hot water temperature is greater than or equal to the first preset water temperature, selecting a seventh heating assembly to heat for a seventh preset time period;
in this embodiment, the target hot water amount is small, and the target hot water temperature is high, and at this time, the user needs less high-temperature hot water, and should select a heating assembly with higher heating power. The heating power of the seventh heating assembly is 1250W for example.
When the target hot water amount is less than a second preset water amount, and the target hot water temperature is less than the first preset water temperature and greater than or equal to the second preset water temperature, selecting an eighth heating assembly to heat for an eighth preset time period;
in this embodiment, the target hot water amount is small, and the target hot water temperature is higher, at this time, the user needs less medium temperature hot water, and should select a heating component with a heating power on the middle. The heating power of the eighth heating element is 1050W for example.
And when the target hot water amount is smaller than the second preset water amount and the target hot water temperature is smaller than the second preset water temperature, selecting a ninth heating assembly to heat for a ninth preset time.
In this embodiment, the target hot water amount is small, and the target hot water temperature is low, and at this time, the user needs less low-temperature hot water, and should select the heating component with low heating power. The heating power of the ninth heating element is 950W for example.
In order to ensure the water safety of users, the control method of the electric water heater further comprises the following steps: the method comprises the steps of obtaining the current water mixing temperature, and stopping heating of a heating assembly when the current water mixing temperature is larger than or equal to a second preset temperature; the second preset water temperature is 48-58 ℃.
In this embodiment, in user's water use in-process, real-time current muddy water temperature that detects to compare the muddy water temperature that detects with second preset water temperature, when the current muddy water temperature that detects is greater than or equal to second preset water temperature, disconnection heating element's power, so that heating element stops the heating, prevents the temperature and continues to rise. The second preset water temperature is 48-58 ℃, and optionally 50-55 ℃. Because the second preset water temperature is higher, when the current mixed water temperature reaches the second preset water temperature, the outlet water temperature reaches the safe water temperature which can be borne by a general user, and if the water temperature continues to rise, the user can be damaged. Therefore, when the current mixed water temperature is detected to be greater than or equal to the second preset water temperature, the heating assembly is stopped timely, and the safety of water consumption of a user is improved.
In order to more accurately calculate the target hot water quantity and the target hot water temperature so as to further reduce the energy consumption of the water heater, the step of calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water usage duration, the preset mixed water temperature and/or the preset mixed water flow rate includes:
receiving an adjusting instruction for adjusting the preset mixed water temperature and/or the preset mixed water flow rate;
the electric water heater receives an adjusting instruction for adjusting the preset mixed water temperature and/or the preset mixed water flow rate, the instruction is the same as the user time length instruction, and the receiving mode can be received through a wireless network or a physical key. Namely, the user can adjust the water mixing temperature and/or the water mixing flow rate through a wireless network or a physical key according to actual requirements.
Adjusting the preset mixed water temperature to be the set mixed water temperature and/or adjusting the preset mixed water flow rate to be the set mixed water flow rate according to the adjusting instruction;
the electric water heater adjusts the water mixing temperature to the set water mixing temperature according to the adjusting instruction, and adjusts the water mixing flow rate to the set water mixing flow rate. At this time, the water outlet speed (corresponding to the water mixing flow rate) and the water outlet temperature (corresponding to the water mixing temperature) are set according to the requirements of users.
And calculating the target hot water quantity and the target hot water temperature of the required hot water according to the target water using duration, the set mixed water temperature or the preset mixed water temperature and the set mixed water flow rate or the preset mixed water flow rate.
Target hot water yield and target hot water temperature in this embodiment are the muddy water temperature and the muddy water velocity of water after using the regulation as the parameter to target water is long for the basis for current target hot water temperature and target hot water yield all correspond with user's actual water use condition, thereby make when selecting heating element, accord with actual conditions more, and are more accurate.
The present invention further provides an electric water heater comprising:
the receiving module 10 is configured to receive a duration control instruction of a user, and obtain a target water usage duration according to the duration control instruction;
in this embodiment, there are various ways for a user to send a duration control instruction to an electric water heater, for example, the user may send the duration control instruction through a wireless network by using a mobile terminal (e.g., a remote controller, a mobile phone, a tablet electric energy, an intelligent bracelet, an intelligent watch, etc.), or may send the duration control instruction directly through a physical key. After the electric water heater obtains the duration control instruction, the target water usage duration corresponding to the duration control instruction is obtained according to a mapping table of a preset duration control instruction and the target water usage duration. The electric water heater knows how long the user needs to use the water according to the time length control instruction of the user, namely, the electric water heater obtains the time length of water supply needed for the user.
The calculation module 20 is configured to calculate a target hot water volume and/or a target hot water temperature of the required hot water according to the target water usage duration, the preset mixed water temperature and/or the preset mixed water flow rate;
in this embodiment, after the target water usage duration is obtained, the target hot water volume and/or the target hot water temperature of the required hot water are calculated according to the target water usage duration, the preset mixed water temperature and/or the preset mixed water flow rate. The target hot water temperature is higher than the preset mixed water temperature, and the target hot water amount is smaller than or equal to the capacity of the inner container. Of course, in some embodiments, the target amount of hot water (the required amount of hot water) may also be greater than the bladder capacity, at which point the entire water usage period may need to be scheduled. The target hot water temperature and the target hot water amount are proportional to the target water using time, the preset mixed water temperature and the preset mixed water flow rate, namely, when the target water using time is longer, the preset mixed water temperature is higher, and the preset mixed water flow rate is faster, the target hot water temperature is higher, and the target hot water amount is larger. That is, the longer the user needs to use water, the higher the temperature of the water, and the faster the flow rate of the water, the higher the temperature of the water to be heated, and the more the amount of water to be heated. Wherein, muddy water temperature and muddy water velocity of flow can preset, and the user also can adjust according to actual conditions. The real-time water consumption condition of the user is considered, and under the condition that the target water consumption time length is not changed, the target hot water quantity and the target hot water temperature are changed along with the mixed water temperature and the mixed water flow rate in real time, so that the heating condition of the electric water heater always takes the target water consumption time length as a reference, and the water consumption condition of the user is met with the lowest energy consumption.
The target hot water temperature and the target hot water quantity satisfy an inverse correlation relationship, that is, when the target hot water temperature rises, the target hot water quantity can be correspondingly reduced; when the target hot water temperature decreases, the target hot water amount needs to be increased accordingly.
Of course, in some embodiments, since the capacity of the inner container is fixed, the target hot water amount is the capacity of the inner container, and the commonly used target hot water temperature can be calculated at this time.
And the heating module 30 is used for selecting a preset heating assembly according to the target hot water amount and/or the target hot water temperature.
In this embodiment, different heating assemblies are provided for different target hot water amounts and target hot water temperatures. Since the heating time period (target water use time period) is fixed, both the target hot water temperature and the target hot water amount are positively correlated with the power of the heating assembly. That is, the higher the target hot water temperature is, the more the target hot water amount is, the higher the heating power of the heating element corresponding thereto is; the lower the target hot water temperature is, the smaller the target hot water amount is, the lower the heating power of the heating element corresponding thereto is.
In the embodiment, a time length control instruction of a user is received through an electric water heater, and a target water using time length is obtained according to the time length control instruction; calculating the target hot water quantity and/or the target hot water temperature of the required hot water according to the target water consumption duration, the preset mixed water temperature and/or the preset mixed water flow rate; then, selecting a preset heating assembly according to the target hot water quantity and/or the target hot water temperature; according to the technical scheme, the water consumption time length required by a user is taken as a basis, the water consumption condition of the user is combined, the current water quantity and the current water temperature of the required hot water are calculated, and the proper heating component is selected according to the water quantity and the water temperature of the required hot water, so that the water consumption requirement of the user is met, and meanwhile, the energy consumption of the electric water heater is reduced.
In order to select the heating component more accurately so as to further reduce the energy consumption of the electric water heater, the heating module comprises:
the first heating unit is used for selecting a first heating assembly to heat for a first preset time when the target hot water amount is greater than or equal to a first preset water amount and the target hot water temperature is greater than or equal to a first preset water temperature;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs a large amount of high-temperature hot water, and should select a heating component with higher heating power. The first predetermined water amount is 100L, the first predetermined water temperature is 70 degrees celsius, and the heating power of the first heating element is 1500W, i.e. when the target hot water amount is more than or equal to 100L and the target hot water temperature is higher than or equal to 70 degrees celsius, the 1500W heating element is turned on.
It is worth to be noted that the first preset time period and the second to ninth preset time periods appearing in the following embodiments are all less than or equal to the target water usage time period. When all water parameters are not changed, the water heater uses the same group of heating components from the beginning to the end of heating, at the moment, the preset time length is equal to the target water using time length, namely, the water is heated until the user stops using the water, and at the moment, the hot water is just used up. When the water use parameter of the user is changed, the working heating assembly is switched from the first heating assembly to the ninth heating assembly, and at the moment, the sum of the first preset time length to the ninth preset time length is equal to the target water use time length. Therefore, the energy consumption of the water heater is reduced to the minimum while water consumption of a user is guaranteed.
The second heating unit is used for selecting a second heating assembly to heat for a second preset time when the target hot water amount is greater than or equal to a first preset water amount and the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs more medium-temperature hot water, and should select a heating component with high heating power. The first predetermined water amount is 100L, the second predetermined water temperature is 60 degrees celsius, and the heating power of the second heating element is 1200W, i.e. when the target hot water amount is more than or equal to 100L and the target hot water temperature is lower than 70 degrees celsius and higher than 60 degrees celsius, the 1200W heating element is turned on.
And the third heating unit is used for selecting a third heating assembly to heat for a third preset time when the target hot water amount is greater than or equal to the first preset water amount and the target hot water temperature is less than the second preset water temperature.
In this embodiment, the target hot water amount is large, and the target hot water temperature is low, and at this time, the user needs more low-temperature hot water, and should select the heating component with low heating power. The first predetermined water amount is 100L, the second predetermined water temperature is 60 degrees celsius, and the heating power of the third heating element is 1000W, i.e. when the target hot water amount is more than or equal to 100L and the target hot water temperature is lower than 60 degrees celsius, the 1000W heating element is turned on.
In this embodiment, according to the relationship between the specific target hot water amount and the first preset water amount, and the relationship between the target hot water amount and the first preset water temperature, the second preset water temperature, the first heating assembly, the second heating assembly, and the third heating assembly are respectively selected, so that the selection of the heating assemblies is more detailed and accurate, and the energy consumption of the water heater is further reduced.
In order to select the heating component more accurately so as to further reduce the energy consumption of the electric water heater, the heating module comprises:
the fourth heating unit is used for selecting a fourth heating component to heat for a fourth preset time when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount and the target hot water temperature is greater than or equal to a first preset water temperature;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs a large amount of high-temperature hot water, and should select a heating assembly with a higher heating power. The first predetermined water amount is 100L, the second predetermined water amount is 80L, the first predetermined water temperature is 70 degrees celsius, and the heating power of the fourth heating element is 1300W, i.e. when the target hot water amount is more than or equal to 80L and less than 100L, and the target hot water temperature is higher than or equal to 70 degrees celsius, the 1300W heating element is turned on.
The fifth heating unit is used for selecting a fifth heating component to heat for a fifth preset time when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount and the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature;
in this embodiment, the target hot water amount is large, and the target hot water temperature is high, and at this time, the user needs more medium-temperature hot water, and should select a heating component with higher heating power. The first predetermined water amount is 100L, the second predetermined water amount is 80L, the second predetermined water temperature is 60 degrees celsius, and the heating power of the fifth heating element is 1100W, i.e. when the target hot water amount is more than or equal to 80L and less than 100L, and the target hot water temperature is lower than 70 degrees celsius and higher than 60 degrees celsius, the heating element of 1100W is turned on.
And the sixth heating unit is used for selecting a sixth heating component to heat for a sixth preset time when the target hot water amount is greater than or equal to the second preset water amount and less than the first preset water amount and the target hot water temperature is less than the second preset water temperature.
In this embodiment, the target hot water amount is large, and the target hot water temperature is low, and at this time, the user needs large amount of low-temperature hot water, and should select a heating component with low heating power. The heating power of the sixth heating element is 900W for example.
In order to select the heating component more accurately so as to further reduce the energy consumption of the electric water heater, the heating module comprises:
the seventh heating unit is used for selecting a seventh heating assembly to heat for a seventh preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is greater than or equal to the first preset water temperature;
in this embodiment, the target hot water amount is small, and the target hot water temperature is high, and at this time, the user needs less high-temperature hot water, and should select a heating assembly with higher heating power. The heating power of the seventh heating assembly is 1250W for example.
The eighth heating unit is used for selecting the eighth heating assembly to heat for an eighth preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is less than the first preset water temperature and greater than or equal to the second preset water temperature;
in this embodiment, the target hot water amount is small, and the target hot water temperature is higher, at this time, the user needs less medium temperature hot water, and should select a heating component with a heating power on the middle. The heating power of the eighth heating element is 1050W for example.
And the ninth heating unit is used for selecting the ninth heating component to heat for a ninth preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is less than the second preset water temperature.
In this embodiment, the target hot water amount is small, and the target hot water temperature is low, and at this time, the user needs less low-temperature hot water, and should select the heating component with low heating power. The heating power of the ninth heating element is 950W for example.
In order to ensure the water safety of a user, the electric water heater further comprises a safety module, wherein the safety module is used for acquiring the current mixed water temperature, and when the current mixed water temperature is greater than or equal to a second preset water temperature, the heating assembly stops heating; the second preset water temperature is 48-58 ℃.
In this embodiment, in user's water use in-process, real-time current muddy water temperature that detects to compare the muddy water temperature that detects with second preset water temperature, when the current muddy water temperature that detects is greater than or equal to second preset water temperature, disconnection heating element's power, so that heating element stops the heating, prevents the temperature and continues to rise. The second preset water temperature is 48-58 ℃, and optionally 50-55 ℃. Because the second preset water temperature is higher, when the current mixed water temperature reaches the second preset water temperature, the outlet water temperature reaches the safe water temperature which can be borne by a general user, and if the water temperature continues to rise, the user can be damaged. Therefore, when the current mixed water temperature is detected to be greater than or equal to the second preset water temperature, the heating assembly is stopped timely, and the safety of water consumption of a user is improved.
In order to more accurately calculate the target hot water amount and the target hot water temperature so as to further reduce the energy consumption of the water heater, the calculation module further comprises:
the receiving unit 21 is configured to receive an adjusting instruction for adjusting a preset mixed water temperature and/or a preset mixed water flow rate;
the electric water heater receives an adjusting instruction for adjusting the preset mixed water temperature and/or the preset mixed water flow rate, the instruction is the same as the user time length instruction, and the receiving mode can be received through a wireless network or a physical key. Namely, the user can adjust the water mixing temperature and/or the water mixing flow rate through a wireless network or a physical key according to actual requirements.
The adjusting unit 22 is configured to adjust a preset mixed water temperature to a set mixed water temperature and/or adjust a preset mixed water flow rate to a set mixed water flow rate according to an adjusting instruction;
the electric water heater adjusts the water mixing temperature to the set water mixing temperature according to the adjusting instruction, and adjusts the water mixing flow rate to the set water mixing flow rate. At this time, the water outlet speed (corresponding to the water mixing flow rate) and the water outlet temperature (corresponding to the water mixing temperature) are set according to the requirements of users.
The calculating unit 23 is configured to calculate a target hot water volume and a target hot water temperature of the required hot water according to the target water usage duration, the set mixed water temperature or the preset mixed water temperature, and the set mixed water flow rate or the preset mixed water flow rate.
Target hot water yield and target hot water temperature in this embodiment are the muddy water temperature and the muddy water velocity of water after using the regulation as the parameter to target water is long for the basis for current target hot water temperature and target hot water yield all correspond with user's actual water use condition, thereby make when selecting heating element, accord with actual conditions more, and are more accurate.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A control method of an electric water heater is characterized by comprising the following steps:
receiving a time length control instruction of a user, and acquiring a target water using time length according to the time length control instruction;
calculating a target hot water quantity and a target hot water temperature of the required hot water according to the target water using duration, the preset mixed water temperature and the preset mixed water flow rate;
when the target hot water amount is larger than or equal to a first preset water amount and the target hot water temperature is larger than or equal to a first preset water temperature, selecting a first heating assembly to heat for a first preset time;
when the target hot water amount is larger than or equal to a first preset water amount, and the target hot water temperature is smaller than a first preset water temperature and larger than or equal to a second preset water temperature, selecting a second heating assembly to heat for a second preset time;
when the target hot water amount is larger than or equal to the first preset water amount and the target hot water temperature is smaller than the second preset water temperature, selecting a third heating assembly to heat for a third preset time;
when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount, and the target hot water temperature is greater than or equal to a first preset water temperature, selecting a fourth heating assembly to heat for a fourth preset time;
when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount, and meanwhile, the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature, selecting a fifth heating assembly to heat for a fifth preset time;
when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount, and the target hot water temperature is less than a second preset water temperature, selecting a sixth heating assembly to heat for a sixth preset time;
when the target hot water amount is less than the second preset water amount and the target hot water temperature is greater than or equal to the first preset water temperature, selecting a seventh heating assembly to heat for a seventh preset time period;
when the target hot water amount is less than a second preset water amount, and the target hot water temperature is less than the first preset water temperature and greater than or equal to the second preset water temperature, selecting an eighth heating assembly to heat for an eighth preset time period;
when the target hot water amount is smaller than a second preset water amount and the target hot water temperature is smaller than a second preset water temperature, selecting a ninth heating assembly to heat for a ninth preset time;
and the sum of the first preset time length and the ninth preset time length is equal to the target water using time length.
2. The control method of an electric water heater according to claim 1, further comprising:
the method comprises the steps of obtaining the current water mixing temperature, and stopping heating of a heating assembly when the current water mixing temperature is larger than or equal to a second preset temperature; the second preset water temperature is 48-58 ℃.
3. The method of claim 1, wherein the step of calculating the target hot water amount and the target hot water temperature of the required hot water according to the target water usage duration, the preset mixed water temperature and the preset mixed water flow rate comprises:
receiving an adjusting instruction for adjusting the preset mixed water temperature and/or the preset mixed water flow rate;
adjusting the preset mixed water temperature to be the set mixed water temperature and/or adjusting the preset mixed water flow rate to be the set mixed water flow rate according to the adjusting instruction;
and calculating the target hot water quantity and the target hot water temperature of the required hot water according to the target water using duration, the set mixed water temperature or the preset mixed water temperature and the set mixed water flow rate or the preset mixed water flow rate.
4. An electric water heater, comprising:
the receiving module is used for receiving a time length control instruction of a user and acquiring target water using time length according to the time length control instruction;
the calculating module is used for calculating the target hot water quantity and the target hot water temperature of the required hot water according to the target water consumption duration, the preset mixed water temperature and the preset mixed water flow rate;
a heating module, the heating module comprising:
the first heating unit is used for selecting a first heating assembly to heat for a first preset time when the target hot water amount is greater than or equal to a first preset water amount and the target hot water temperature is greater than or equal to a first preset water temperature;
the second heating unit is used for selecting a second heating assembly to heat for a second preset time when the target hot water amount is greater than or equal to a first preset water amount and the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature;
the third heating unit is used for selecting a third heating assembly to heat for a third preset time when the target hot water amount is greater than or equal to the first preset water amount and the target hot water temperature is less than the second preset water temperature;
the fourth heating unit is used for selecting a fourth heating component to heat for a fourth preset time when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount and the target hot water temperature is greater than or equal to a first preset water temperature;
the fifth heating unit is used for selecting a fifth heating component to heat for a fifth preset time when the target hot water amount is greater than or equal to a second preset water amount and less than a first preset water amount and the target hot water temperature is less than a first preset water temperature and greater than or equal to a second preset water temperature;
the sixth heating unit is used for selecting a sixth heating assembly to heat for a sixth preset time when the target hot water amount is greater than or equal to a second preset water amount and less than the first preset water amount and the target hot water temperature is less than the second preset water temperature;
the seventh heating unit is used for selecting a seventh heating assembly to heat for a seventh preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is greater than or equal to the first preset water temperature;
the eighth heating unit is used for selecting the eighth heating assembly to heat for an eighth preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is less than the first preset water temperature and greater than or equal to the second preset water temperature;
the ninth heating unit is used for selecting the ninth heating component to heat for a ninth preset time when the target hot water amount is less than the second preset water amount and the target hot water temperature is less than the second preset water temperature;
and the sum of the first preset time length and the ninth preset time length is equal to the target water using time length.
5. The electric water heater according to claim 4, further comprising a safety module, wherein the safety module is configured to obtain a current mixed water temperature, and when the current mixed water temperature is greater than or equal to a second preset water temperature, the heating element stops heating; the second preset water temperature is 48-58 ℃.
6. The electric water heater of claim 4, wherein the computing module comprises:
the receiving unit is used for receiving an adjusting instruction for adjusting the preset mixed water temperature and/or the preset mixed water flow rate;
the adjusting unit is used for adjusting the preset mixed water temperature to be the set mixed water temperature and/or adjusting the preset mixed water flow rate to be the set mixed water flow rate according to the adjusting instruction;
and the calculating unit is used for calculating the target hot water quantity and the target hot water temperature of the required hot water according to the target water using duration, the set mixed water temperature or the preset mixed water temperature and the set mixed water flow rate or the preset mixed water flow rate.
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Effective date of registration: 20221104 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |
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