CN112484311A

CN112484311A - Control method and device for water heater, water heater and processor

Info

Publication number: CN112484311A
Application number: CN202011410583.7A
Authority: CN
Inventors: 袁伟龙; 魏中科; 全永兵; 杨彬; 张飞豹
Original assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-03-12
Anticipated expiration: 2040-12-03
Also published as: CN112484311B

Abstract

The embodiment of the invention provides a control method for a water heater, which comprises the following steps: acquiring the outlet water temperature of the water heater; adjusting the current firepower section of the water heater according to a preset temperature curve so as to adjust the outlet water temperature; determining whether the control mode of the water heater reaches a switching condition or not according to the adjusted outlet water temperature; and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into a constant-temperature control mode. The control method effectively improves the stability of the water outlet temperature of the water heater and further improves the comfort experience of users.

Description

Control method and device for water heater, water heater and processor

Technical Field

The invention relates to the field of electric appliances, in particular to a control method and device for a water heater, the water heater, a processor and a storage medium.

Background

The electric water heater is divided into a water storage type, an instant heating type (also called a rapid type) and a rapid heating type. The instantaneous water heater is a gas instantaneous water heater which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode to achieve the purpose of preparing hot water. It is also known as a fast or, instantaneous or instantaneous water heater. The genre of the gas water heater is that the main element heating element of the instant electric water heater is made of metal, namely enterprise camps.

With the progress of society, the living standard of people is higher and higher, and the requirement for the bathing experience of the water heater is gradually improved. The instant gas water heater is an ideal choice for many families due to the advantages of small volume, low price, high heating speed, convenient use and the like, but the outlet water temperature is easy to fluctuate up and down under the influence of external factors, such as: fluctuation of water inlet flow, change of water inlet temperature, external reverse flow and the like.

In the conventional technology, the gas inlet amount is controlled by adjusting a gas valve so as to control the water outlet temperature of the water heater. However, this control method is not effective to accurately regulate the temperature of the water heater.

Disclosure of Invention

The invention aims to provide a control method and device for a water heater, the water heater, a processor and a storage medium.

In order to achieve the above object, a first aspect of the present invention provides a control method for a water heater, comprising:

acquiring the outlet water temperature of the water heater;

adjusting the current firepower section of the water heater according to a preset temperature curve so as to adjust the outlet water temperature;

determining whether the control mode of the water heater reaches a switching condition or not according to the adjusted outlet water temperature;

and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into a constant-temperature control mode.

In the embodiment of the invention, the control method further comprises the steps of obtaining the starting time of the water heater; the switching condition comprises that the regulated outlet water temperature is in a preset interval range, and the starting-up time is greater than a first time threshold value; the preset interval range is from the difference value between the preset set temperature and the first preset value to the sum of the preset set temperature and the first preset value.

In the embodiment of the invention, the control method further comprises the steps of obtaining the starting time of the water heater; the switching condition comprises that the outlet water temperature is greater than the sum of the temperature determined according to the preset temperature curve and a second preset value, and the starting time is greater than a second starting threshold value; the control method further comprises the following steps: and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into the power-on excessive control mode.

In the embodiment of the present invention, the control method further includes: after the control mode of the water heater is switched to the power-on excessive control mode, the control mode of the water heater is switched to the constant-temperature control mode after the preset delay time.

In the embodiment of the present invention, the control method further includes: after the control mode of the water heater is switched to a constant temperature control mode, detecting whether the current firepower section of the water heater is consistent with the firepower section determined according to a preset temperature curve; under the condition that the firepower sections are inconsistent, switching the control mode of the water heater from the constant-temperature control mode to an emergency mode; and switching the current firepower section into a firepower section determined according to a preset temperature curve, and switching the control mode of the water heater from the emergency state mode to the constant temperature control mode after the first time length.

In the embodiment of the present invention, the control method further includes: under the condition that the single sudden change of the water flow speed is detected, the control mode of the water heater is switched from the constant-temperature control mode to a single sudden change state mode; and adjusting the current firepower section by section according to the water flow speed, and switching the control mode of the water heater from the single sudden change state mode to the constant temperature control mode after the second time length.

In the embodiment of the present invention, the control method further includes: under the condition that the flow of water flow is detected to be changed continuously for a preset number of times in a one-way mode, the control mode of the water heater is switched from a constant-temperature control mode to a flow change state mode; and under the condition that the flow of the water flow is determined to be stable and the stable time reaches a third duration, switching the control mode of the water heater from the flow change state mode to the constant temperature control mode.

In the embodiment of the invention, the adjusting the current fire section of the water heater according to the preset temperature curve comprises the following steps: determining a preset temperature value corresponding to the temperature of water on a preset temperature curve; and adjusting the current firepower subsection of the water heater according to the outlet water temperature and the preset temperature value so as to adjust the outlet water temperature to the preset temperature value in the shortest time.

A second aspect of the present invention provides a control apparatus for a water heater, comprising:

the temperature sensor is configured to acquire the outlet water temperature of the water heater;

the fire valve is configured to adjust the current fire section of the water heater according to a preset temperature curve so as to adjust the outlet water temperature; and

a processor configured to determine whether a control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature; and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into a constant-temperature control mode.

In an embodiment of the present invention, the control device further includes:

the time confirmation module is configured to acquire the starting time of the water heater;

a processor further configured to switch the control mode of the water heater to a constant temperature control mode if it is determined that the control mode reaches the switching condition;

the switching condition comprises that the regulated outlet water temperature is within a preset interval range, and the starting-up time is greater than a first time threshold value; the preset interval range is from the difference value between the preset set temperature and the first preset value to the sum of the preset set temperature and the first preset value.

In an embodiment of the present invention, the control device further includes:

the processor is further configured to switch the control mode of the water heater to the power-on excessive control mode if the control mode is determined to reach the switching condition;

the switching condition comprises that the outlet water temperature is greater than the sum of the temperature determined according to the preset temperature curve and a second preset value, and the starting time is greater than a second starting threshold value.

In an embodiment of the invention, the processor is further configured to: after the control mode of the water heater is switched to the power-on excessive control mode, the control mode of the water heater is switched to the constant-temperature control mode after the preset delay time.

A third aspect of the invention provides a machine-readable storage medium having stored thereon instructions for causing a machine to perform the control method for a water heater described above.

A fourth aspect of the invention provides a processor, the program being operative to perform the control method for a water heater of any one of the above-mentioned applications.

A fifth aspect of the invention provides a water heater comprising a control device for a water heater as described above.

According to the technical scheme, the water outlet temperature of the water heater is obtained, the current firepower section of the water heater is adjusted according to the preset temperature curve so as to adjust the water outlet temperature, whether the control mode of the water heater reaches the switching condition or not is determined according to the adjusted water outlet temperature, and the control mode of the water heater is switched to the constant temperature control mode under the condition that the control mode reaches the switching condition is determined, so that the stability of the water outlet temperature of the water heater is effectively improved, and the comfort experience of a user is further improved.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:

FIG. 1 schematically illustrates a flow diagram of a method of controlling a water heater according to an embodiment of the invention;

FIG. 2 schematically illustrates a flow chart of a method of controlling a water heater according to another embodiment of the present invention;

FIG. 3 schematically illustrates a flow chart of a method of controlling a water heater according to an embodiment of the present invention;

FIG. 4 schematically illustrates a flow chart of a method of controlling a water heater according to an embodiment of the present invention;

FIG. 5 schematically illustrates a flow chart of a method of controlling a water heater according to an embodiment of the present invention;

fig. 6 is a block diagram schematically showing the construction of a control apparatus for a water heater according to an embodiment of the present invention;

FIG. 7 schematically illustrates a block diagram of a water heater apparatus according to an embodiment of the present invention;

fig. 8 schematically shows an internal structure diagram of a computer apparatus according to an embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

Fig. 1 schematically shows a flow chart of a control method for a water heater according to an embodiment of the present invention. As shown in fig. 1, in an embodiment of the present invention, there is provided a control method for a water heater, including the steps of:

step 101, obtaining the outlet water temperature of the water heater.

And 102, adjusting the current fire subsection of the water heater according to a preset temperature curve so as to adjust the outlet water temperature.

The preset temperature curve refers to the state change of the ideal system state obtained by technicians through a large amount of experimental data to set corresponding feedforward system parameters, so that the output temperature can be close to the set temperature at the fastest speed. The ideal state change of the system can be set according to a curve through fixed parameters, and the change parameters are as follows: the input is water temperature, the water way water flow and power of the water heater, and the output is water temperature. Setting a feedforward parameter, adjusting the final output water temperature by adjusting the heating power, wherein the feedforward parameter is used for adjusting the heating power through the water flow and the target outlet water temperature.

The water heater can obtain the outlet water temperature of the water heater through the temperature sensor. The current firepower subsection of the water heater can be adjusted according to the preset temperature curve of the water heater, and the water outlet temperature of the water heater can be adjusted by adjusting the firepower subsection.

In one embodiment, adjusting the current fire segment of the water heater according to the preset temperature profile comprises: determining a preset temperature value corresponding to the temperature of water on a preset temperature curve; and adjusting the current firepower subsection of the water heater according to the outlet water temperature and the preset temperature value so as to adjust the outlet water temperature to the preset temperature value in the shortest time.

The water heater is set with a preset outlet water temperature, and the value of the preset outlet water temperature corresponding to the preset temperature curve is a preset temperature value of the water heater. After the water heater obtains the current water outlet temperature through the temperature sensor, the current preset temperature value corresponding to the current water outlet temperature on the preset temperature curve of the water heater is determined, and the current firepower segmentation of the water heater can be adjusted according to the water outlet temperature and the corresponding preset temperature value, so that the current water outlet temperature can be adjusted to the preset water outlet temperature in the shortest time.

And 103, determining whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature.

And 104, switching the control mode of the water heater to a constant temperature control mode under the condition that the control mode is determined to reach the switching condition.

The water heater adjusts the water outlet temperature by adjusting the firepower section of the water heater through the preset temperature curve, and the water heater can adjust the water outlet temperature to the preset temperature value in the shortest time according to the preset temperature curve. And the water heater processor determines whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature.

In one embodiment, the control method further comprises obtaining the starting time of the water heater; the switching condition comprises that the regulated outlet water temperature is in a preset interval range, and the starting-up time is greater than a first time threshold value; the preset interval range is from the difference value between the preset set temperature and the first preset value to the sum of the preset set temperature and the first preset value.

The water heater processor sets the first time threshold to 12S and the first preset value to 4 ℃. The processor in the control method of the water heater also needs to acquire the starting time of the water heater. The water heater processor determines whether the control mode of the water heater reaches a switching condition according to the regulated outlet water temperature, wherein the switching condition is as follows: the water outlet temperature of the water heater after adjustment is within a preset range, and the starting time is greater than a first time threshold value. The preset range is from the difference value between the preset set temperature and the first preset value to the sum of the preset set temperature and the first preset value.

For example, the processor obtains the startup time of the water heater, and judges whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature, wherein the switching condition is as follows: the water outlet temperature after the water heater is adjusted is between the temperature value-4 ℃ preset by a user and the temperature value +4 ℃ preset by the user, and the starting time is greater than the first time threshold value, namely 12S. Specifically, if the water outlet temperature preset by the user is 40 ℃, the water outlet temperature adjusted by the water heater is 36-44 ℃, and the starting time is more than 12S. At this time, the control mode of the water heater is judged to reach the switching condition.

And under the condition that the processor determines that the control mode of the water heater reaches the switching condition in the embodiment, switching the control mode of the water heater into the constant-temperature control mode.

In one embodiment, the control method further comprises obtaining a start-up time of the water heater; the switching condition comprises that the outlet water temperature is greater than the sum of the temperature determined according to the preset temperature curve and a second preset value, and the starting time is greater than a second starting threshold value. The control method further comprises the following steps: and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into the power-on excessive control mode.

The water heater processor sets the second time threshold to 3S and the second preset value to 4 ℃. The processor in the control method of the water heater also needs to acquire the starting time of the water heater. The water heater processor determines whether the control mode of the water heater reaches a switching condition according to the regulated outlet water temperature, wherein the switching condition comprises the following steps: the outlet water temperature after the water heater is adjusted is larger than the sum of the preset temperature value and a second preset value, and the starting time is larger than a second time threshold. And when the processor determines that the control mode reaches the switching condition, switching the control mode of the water heater into the power-on over-control mode.

For example, the processor obtains the startup time of the water heater, and judges whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature, wherein the switching condition is as follows: the outlet water temperature after the water heater is adjusted is the temperature value +4 ℃ preset by a user, and the starting time is greater than the second time threshold value, namely 3S. Specifically, if the outlet water temperature preset by the user is 40 ℃, the outlet water temperature adjusted by the water heater is greater than 44 ℃, and the startup time is greater than 3S. At this time, the control mode of the water heater is judged to reach the switching condition. The processor switches the control mode of the water heater into the power-on over-control mode.

In one embodiment, the control method further comprises: after the control mode of the water heater is switched to the power-on excessive control mode, the control mode of the water heater is switched to the constant-temperature control mode after the preset delay time.

The water heater processor sets the preset delay to 1S. After the control mode of the water heater is switched to the power-on transition control mode, the control mode of the water heater is switched to the constant-temperature control mode from the power-on transition control mode after the preset delay time 1S.

In one embodiment, the control method further comprises obtaining a start-up time of the water heater; the switching condition comprises that the outlet water temperature is greater than the sum of the temperature determined according to the preset temperature curve and a second preset value, and the starting time is greater than a second starting threshold value. The control method further comprises the following steps: and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into the power-on excessive control mode. After the control mode of the water heater is switched to the power-on transition control mode, the control mode of the water heater is switched to the constant temperature control mode after the preset delay time length.

According to the control method for the water heater, the water outlet temperature of the water heater is obtained, the current firepower subsection of the water heater is adjusted according to the preset temperature curve, the water outlet temperature is adjusted, whether the control mode of the water heater reaches the switching condition or not is determined according to the adjusted water outlet temperature, and the control mode of the water heater is switched to the constant temperature control mode under the condition that the control mode reaches the switching condition is determined, so that the stability of the water outlet temperature of the water heater is effectively improved, and the comfort experience of a user is further improved.

In one embodiment, fig. 2 schematically shows a flow chart of a control method for a water heater according to an embodiment of the invention. As shown in fig. 2, in an embodiment of the present invention, there is provided a control method for a water heater, including the steps of:

step 201, obtaining the outlet water temperature of the water heater.

And step 202, adjusting the current fire subsection of the water heater according to a preset temperature curve so as to adjust the outlet water temperature.

And step 203, determining whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature.

And 204, switching the control mode of the water heater to the power-on over-control mode under the condition that the control mode is determined to reach the switching condition.

In step 205, after the control mode of the water heater is switched to the power-on transition control mode, the control mode of the water heater is switched to the constant temperature control mode after a preset delay time.

The water heater obtains the outlet water temperature of the water heater through the temperature sensor. And adjusting the current firepower subsection of the water heater according to the preset temperature curve of the water heater, and adjusting the water outlet temperature of the water heater by adjusting the firepower subsection. The water heater is set with a preset outlet water temperature, and the value of the preset outlet water temperature corresponding to the preset temperature curve is a preset temperature value of the water heater. After the water heater obtains the current water outlet temperature through the temperature sensor, the current preset temperature value corresponding to the current water outlet temperature on the preset temperature curve of the water heater is determined, and the current firepower segmentation of the water heater is adjusted according to the water outlet temperature and the preset temperature value corresponding to the water outlet temperature, so that the current water outlet temperature can be adjusted to the preset water outlet temperature in the shortest time.

The control method further comprises the steps of obtaining the starting time of the water heater; the switching condition comprises that the outlet water temperature is greater than the sum of the temperature determined according to the preset temperature curve and a second preset value, and the starting time is greater than a second starting threshold value. The control method further comprises the following steps: and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into the power-on excessive control mode. After the control mode of the water heater is switched to the power-on excessive control mode, the control mode of the water heater is switched to the constant-temperature control mode after the preset delay time.

The water heater processor sets the second time threshold to 3S, the second preset value to 4 ℃ and the water heater processor sets the preset delay to 1S. The processor in the control method of the water heater also needs to acquire the starting time of the water heater. For example, the water heater obtains the outlet water temperature of the water heater through a temperature sensor, the water heater adjusts the current firepower section of the water heater according to a preset temperature curve, and the outlet water temperature of the water heater is adjusted through adjusting the firepower section. Determining whether the control mode of the water heater reaches a switching condition according to the regulated outlet water temperature, wherein the switching condition is as follows: the outlet water temperature after the water heater is adjusted is the temperature value +4 ℃ preset by a user, and the starting time is greater than the second time threshold value, namely 3S. Specifically, if the outlet water temperature preset by the user is 40 ℃, the outlet water temperature adjusted by the water heater is greater than 44 ℃, and the startup time is greater than 3S. At this time, the control mode of the water heater is judged to reach the switching condition. The processor switches the control mode of the water heater into the power-on over-control mode. After the control mode of the water heater is switched to the power-on transition control mode, the control mode of the water heater is switched to the constant-temperature control mode from the power-on transition control mode after the preset delay time 1S.

In one embodiment, the control method further comprises: after the control mode of the water heater is switched to a constant temperature control mode, detecting whether the current firepower section of the water heater is consistent with the firepower section determined according to a preset temperature curve; under the condition that the firepower sections are inconsistent, switching the control mode of the water heater from the constant-temperature control mode to an emergency mode; and switching the current firepower section into a firepower section determined according to a preset temperature curve, and switching the control mode of the water heater from the emergency state mode to the constant-temperature control mode after a first time length.

The processor sets the first time period to 3.5S. According to the embodiment shown in fig. 1, after the control mode of the water heater is switched to the constant temperature control mode, the processor of the water heater detects the current fire segment of the water heater, and if the current fire segment is not consistent with the fire segment determined according to the preset temperature curve, the processor switches the control mode of the water heater from the constant temperature control mode to the emergency mode. When the water heater is in the emergency state mode, the processor switches the current firepower section into the firepower section determined according to the preset temperature curve, and after the first time length is 3.5 seconds, the control mode of the water heater is switched from the emergency state mode to the constant temperature control mode.

In one embodiment, fig. 3 schematically shows a flow chart of a control method for a water heater according to an embodiment of the invention. As shown in fig. 3, in an embodiment of the present invention, there is provided a control method for a water heater, including the steps of:

and 301, acquiring the outlet water temperature of the water heater.

And step 302, adjusting the current fire subsection of the water heater according to a preset temperature curve so as to adjust the outlet water temperature.

And step 303, determining whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature.

And 304, switching the control mode of the water heater to a constant temperature control mode under the condition that the control mode is determined to reach the switching condition.

And 305, detecting whether the current firepower section of the water heater is consistent with the firepower section determined according to the preset temperature curve.

And step 306, switching the control mode of the water heater from the constant-temperature control mode to the emergency mode under the condition that the firepower sections are inconsistent. And if the firepower sections are consistent, the control mode of the water heater is kept in a constant temperature control mode.

And 307, switching the current firepower section to the firepower section determined according to the preset temperature curve, and switching the control mode of the water heater from the emergency state mode to the constant temperature control mode after the first time length.

The processor obtains the water outlet temperature of the water heater through the temperature sensor, determines a preset temperature value corresponding to the current water outlet temperature on a preset temperature curve of the water heater according to the preset temperature curve, and adjusts the current firepower segmentation of the water heater according to the water outlet temperature and the preset temperature value corresponding to the water outlet temperature, so that the current water outlet temperature can be adjusted to the preset water outlet temperature within the shortest time. And the water heater processor determines whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature.

The control method also comprises the steps of obtaining the starting time of the water heater; the switching condition comprises that the regulated outlet water temperature is in a preset interval range, and the starting-up time is greater than a first time threshold value; the preset interval range is from the difference value between the preset set temperature and the first preset value to the sum of the preset set temperature and the first preset value. Further, the water heater processor may set the first time threshold to 12S and the first preset value to 4 ℃. The water outlet temperature after the water heater is adjusted is between the temperature value-4 ℃ preset by a user and the temperature value +4 ℃ preset by the user, and the starting time is greater than the first time threshold value, namely 12S. And the processor judges that the control mode of the water heater reaches a switching condition, and switches the control mode of the hot water into a constant-temperature control mode.

The processor detects the current firepower section of the water heater, compares the current firepower section with the firepower section determined according to the preset temperature curve, and switches the control mode of the water heater from the constant-temperature control mode to the emergency mode when the processor determines that the current firepower section is inconsistent with the firepower section determined according to the preset temperature curve.

The processor sets the first time period to 3.5S. And the processor switches the current firepower state to the firepower section determined according to the preset temperature curve, and switches the control mode of the water heater from the emergency state mode back to the constant temperature control mode after 3.5S.

In one embodiment, the control method further comprises: under the condition that the single sudden change of the water flow speed is detected, the control mode of the water heater is switched from the constant-temperature control mode to a single sudden change state mode; and adjusting the current firepower section by section according to the water flow speed, and switching the control mode of the water heater from the single sudden change state mode to the constant temperature control mode after the second time length.

The processor sets the second duration to 5S. The single sudden change of the water flow refers to that the water flow speed is suddenly increased, the processor switches the control mode of the water heater from the constant-temperature control mode to the single sudden change state mode when detecting that the water flow speed is suddenly increased through the flow speed sensor, the current firepower subsection is adjusted according to the water flow speed, the water flow speed is increased, the firepower subsection of the water heater is increased, and after the second time length is 5S, the processor switches the control mode of the water heater from the word sudden change state mode to the constant-temperature control mode.

In one embodiment, fig. 4 schematically shows a flow chart of a control method for a water heater according to an embodiment of the invention. As shown in fig. 4, in an embodiment of the present invention, there is provided a control method for a water heater, including the steps of:

step 401, obtaining the outlet water temperature of the water heater.

And step 402, adjusting the current fire subsection of the water heater according to a preset temperature curve so as to adjust the outlet water temperature.

And 403, determining whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature.

And step 404, switching the control mode of the water heater to a constant temperature control mode under the condition that the control mode is determined to reach the switching condition.

Step 405, detecting whether the water flow speed has single mutation.

And step 406, under the condition that the single sudden change of the water flow speed is detected, switching the control mode of the water heater from the constant-temperature control mode to a single sudden change state mode, and if the water flow speed is in the single sudden change state, keeping the control mode of the water heater in the constant-temperature control mode.

And step 407, adjusting the current firepower section according to the water flow speed, and switching the control mode of the water heater from the single sudden change state mode to the constant temperature control mode after the second time length.

The control method also comprises the steps of obtaining the starting time of the water heater; the switching condition comprises that the regulated outlet water temperature is in a preset interval range, and the starting-up time is greater than a first time threshold value; the preset interval range is from the difference value between the preset set temperature and the first preset value to the sum of the preset set temperature and the first preset value. The water heater processor sets the first time threshold to 12S and the first preset value to 4 ℃. The water outlet temperature after the water heater is adjusted is between the temperature value-4 ℃ preset by a user and the temperature value +4 ℃ preset by the user, and the starting time is greater than the first time threshold value, namely 12S. And the processor judges that the control mode of the water heater reaches a switching condition, and switches the control mode of the hot water into a constant-temperature control mode.

The processor sets the second duration to 5S. The single sudden change of the water flow refers to that the speed of the water flow is suddenly increased, and the processor detects the flow speed of the water flow through the flow speed sensor and judges whether the single sudden change of the flow speed of the water flow occurs. And under the condition that the water flow speed is determined to be suddenly changed, the processor switches the control mode of the water heater from the constant-temperature control mode to the single sudden change state mode, adjusts the current firepower subsection according to the water flow speed, accelerates the water flow speed, increases the firepower subsection of the water heater, and switches the control mode of the water heater from the word sudden change state mode to the constant-temperature control mode after the second time length of 5S.

In one embodiment, the control method further comprises: under the condition that the flow of water flow is detected to be changed continuously for a preset number of times in a one-way mode, the control mode of the water heater is switched from a constant-temperature control mode to a flow change state mode; and under the condition that the flow of the water flow is determined to be stable and the stable time reaches a third duration, switching the control mode of the water heater from the flow change state mode to the constant temperature control mode.

The processor sets the preset number of times to 3 times, and sets the third time period to 1S every time at an interval of 100 ms. The processor of the water heater detects the water flow speed 3 times continuously through the water flow speed sensor and increases every 100ms, or under the condition that the water flow speed is detected 3 times continuously and decreases every 100ms, the processor switches the control mode of the water heater from the constant temperature control mode to the flow change state mode. And under the condition that the flow of the water flow is determined to be stable and the flow stability time of the water flow reaches 1S, the processor switches the control mode of the water heater from the flow change mode to the constant temperature control mode.

In one embodiment, fig. 5 schematically shows a flow chart of a control method for a water heater according to an embodiment of the invention. As shown in fig. 5, in an embodiment of the present invention, there is provided a control method for a water heater, including the steps of:

and step 501, acquiring the outlet water temperature of the water heater.

And 502, adjusting the current fire subsection of the water heater according to a preset temperature curve so as to adjust the outlet water temperature.

And 503, determining whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature.

And step 504, under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into a constant temperature control mode.

And 505, detecting that the flow rate of the water flow changes continuously for a preset time in a one-way mode.

And step 506, switching the control mode of the water heater from the constant-temperature control mode to a flow change state mode.

And 507, switching the control mode of the water heater from the flow change state mode to the constant temperature control mode under the condition that the water flow is determined to be stable and the stabilization time reaches a third duration.

The processor sets the preset number of times to 3 times, and sets the third time period to 1S every time at an interval of 100 ms. The processor of the water heater judges whether the water flow is subjected to unidirectional continuous change for 3 times through the water flow velocity sensor. And when the processor determines that the water flow speed of the water heater is increased for 3 times continuously through the water flow speed sensor, or the water flow speed is increased for 3 times continuously and decreased for 100ms continuously, the processor switches the control mode of the water heater from the constant-temperature control mode to the flow change state mode. And under the condition that the flow of the water flow is determined to be stable and the flow stability time of the water flow reaches 1S, the processor switches the control mode of the water heater from the flow change mode to the constant temperature control mode.

In one embodiment, as shown in fig. 6, there is provided a control device 600 for a water heater, the control device 600 comprising:

the temperature sensor 601 is configured to obtain the outlet water temperature of the water heater.

And the fire valve 602 is configured to adjust the current fire section of the water heater according to a preset temperature curve so as to adjust the outlet water temperature.

A processor 603 configured to determine whether a control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature; and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into a constant-temperature control mode.

The water heater obtains the outlet water temperature of the water heater through the temperature sensor 601. The current firepower section of the water heater is adjusted through a firepower valve 602 of the water heater according to the preset temperature curve of the water heater, and the water outlet temperature of the water heater is adjusted through adjusting the firepower section.

The water heater is set with a preset outlet water temperature, and the value of the preset outlet water temperature corresponding to the preset temperature curve is a preset temperature value of the water heater. The processor 603 obtains the current outlet temperature through the temperature sensor 601, determines the current preset temperature value corresponding to the current outlet temperature on the preset temperature curve of the water heater, and adjusts the current fire segment through the fire valve 602 of the water heater according to the outlet temperature and the preset temperature value corresponding to the outlet temperature, so that the current outlet temperature can be adjusted to the preset outlet temperature in the shortest time. The water heater processor 603 determines whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature, and switches the control mode of the water heater to a constant temperature control mode if the switching condition is determined to be reached.

In one embodiment, as shown in fig. 6, the control device 600 further includes:

a time confirmation module 604 configured to obtain a startup time of the water heater;

a processor 603 further configured to switch the control mode of the water heater to a constant temperature control mode if it is determined that the control mode reaches the switching condition;

The water heater processor 603 sets the first time threshold to 12S and the first preset value to 4 ℃. In the control method for the water heater, the processor 603 also needs to obtain the startup time of the water heater, and the processor 603 obtains the startup time of the water heater through the time confirmation module 604. The water heater processor 603 determines whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature, wherein the switching condition is as follows: the adjusted outlet water temperature of the water heater is within the preset range, and the startup time obtained by the time confirmation module 604 is greater than the first time threshold value 12S. The preset range is from the difference value between the preset set temperature and the first preset value of 4 ℃ to the sum of the preset set temperature and the first preset value of 4 ℃. Specifically, the preset range is from-4 ℃ of the temperature value preset by the user to +4 ℃ of the temperature value preset by the user.

In one embodiment, there is provided a control device 600 for a water heater, the control device 600 including:

A processor 603 configured to determine whether a control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature; under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into a constant-temperature control mode;

the water heater obtains the outlet water temperature of the water heater through the temperature sensor 601. The current firepower section of the water heater is adjusted through a firepower valve 602 of the water heater according to the preset temperature curve of the water heater, and the water outlet temperature of the water heater is adjusted through adjusting the firepower section. The water heater is set with a preset outlet water temperature, and the value of the preset outlet water temperature corresponding to the preset temperature curve is a preset temperature value of the water heater. The processor 603 obtains the current outlet temperature through the temperature sensor 601, determines the current preset temperature value corresponding to the current outlet temperature on the preset temperature curve of the water heater, and adjusts the current fire segment through the fire valve 602 of the water heater according to the outlet temperature and the preset temperature value corresponding to the outlet temperature, so that the current outlet temperature can be adjusted to the preset outlet temperature in the shortest time.

The water heater processor 603 determines whether the control mode of the water heater meets the switching condition according to the adjusted outlet water temperature.

The processor 603 obtains the startup time of the water heater through the time confirmation module 604; the switching condition comprises that the regulated outlet water temperature is in a preset interval range, and the starting-up time is greater than a first time threshold value; the preset interval range is from the difference value between the preset set temperature and the first preset value to the sum of the preset set temperature and the first preset value. The water heater processor 603 sets the first time threshold to 12S and the first preset value to 4 ℃. The temperature of the outlet water after the adjustment of the water heater, which is obtained by the processor 603 through the temperature sensor 601, is between a temperature value preset by a user, which is-4 ℃ and a temperature value preset by the user, which is +4 ℃, and the time of starting up the water heater, which is obtained by the processor 603 through the time confirmation module 604, is greater than a first time threshold value, which is 12S. And the processor judges that the control mode of the water heater reaches a switching condition, and switches the control mode of the hot water into a constant-temperature control mode.

In one embodiment, as shown in fig. 6, the control device 600 further includes:

a processor 603 further configured to switch the control mode of the water heater to a power-on over-control mode if it is determined that the control mode reaches the switching condition;

The water heater processor 603 sets the second time threshold to 3S and the second preset value to 4 ℃. In the control method for the water heater, the processor 603 also needs to obtain the startup time of the water heater, and the processor 603 obtains the startup time of the water heater through the time confirmation module 604. The water heater processor 603 determines whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature, wherein the switching condition is as follows: the outlet water temperature after the adjustment of the water heater is greater than the sum of the preset temperature value and the second preset value of 4 ℃, and the starting time obtained by the time confirmation module 604 is greater than the second time threshold value of 3S. When the processor 603 determines that the control mode reaches the switching condition, the control mode of the water heater is switched to the power-on transition control mode.

In one embodiment, the processor 603 is further configured to: after the control mode of the water heater is switched to the power-on excessive control mode, the control mode of the water heater is switched to the constant-temperature control mode after the preset delay time.

The processor 603 sets the preset delay to 1S. When the processor 603 determines that the control mode reaches the switching condition, after the control mode of the water heater is switched to the power-on transition control mode, after a preset delay time 1S, the processor 603 switches the control mode of the water heater from the power-on transition control mode to the constant temperature control mode.

A processor 603 configured to determine whether a control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature; under the condition that the control mode is determined to reach the switching condition, the control mode of the water heater is switched to a power-on excessive control mode; after the control mode of the water heater is switched to the power-on excessive control mode, the control mode of the water heater is switched to the constant-temperature control mode after the preset delay time.

The water heater processor 603 determines whether the control mode of the water heater meets the switching condition according to the adjusted outlet water temperature. The processor 603 obtains the startup time of the water heater through the time confirmation module 604; the water heater processor 603 sets the second time threshold to 3S, the second preset value to 4 ℃, and the preset delay to 1S. The water heater processor 603 determines whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature, wherein the switching condition is as follows: the water heater obtains the sum of the water outlet temperature adjusted by the water heater through the temperature sensor 601, which is greater than the preset temperature value of the user, and the second preset value 4 ℃ set by the processor 603, and the starting time obtained by the time confirmation module 604 is greater than the second time threshold value 3S. When the processor 603 determines that the control mode reaches the switching condition, the control mode of the water heater is switched to the power-on transition control mode. After the processor 603 switches the control mode to the power-on transition control mode, after the preset delay time 1S, the processor 603 switches the control mode of the water heater from the power-on transition control mode to the constant temperature control mode.

Referring to fig. 7, in one embodiment, fig. 7 is a structural diagram 700 of a water heater provided in an embodiment of the present invention, where the water heater 700 includes a control device 600 for the water heater.

The control device 600 for the water heater comprises a processor and a memory, the control method for the water heater and the like are stored in the memory as program units, and the processor executes the program modules stored in the memory to realize corresponding functions.

The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the control of the water heater is realized by adjusting the kernel parameters.

The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

An embodiment of the present invention provides a storage medium having a program stored thereon, which when executed by a processor implements the above-described control method for a water heater.

The embodiment of the invention provides a processor, which is used for running a program, wherein the program executes the control method for the water heater when running.

In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 8. The computer device includes a processor a01, a network interface a02, a memory (not shown), and a database (not shown) connected by a system bus. Wherein processor a01 of the computer device is used to provide computing and control capabilities. The memory of the computer device comprises an internal memory a03 and a non-volatile storage medium a 04. The non-volatile storage medium a04 stores an operating system B01, a computer program B02, and a database (not shown in the figure). The internal memory a03 provides an environment for the operation of the operating system B01 and the computer program B02 in the nonvolatile storage medium a 04. The database of the computer device is used for storing the data of the temperature and the water flow size of the water heater. The network interface a02 of the computer device is used for communication with an external terminal through a network connection. The computer program B02 is executed by the processor a01 to implement a control method for a water heater.

Those skilled in the art will appreciate that the architecture shown in fig. 8 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps:

acquiring the outlet water temperature of the water heater;

In one embodiment, the control method further comprises obtaining the starting time of the water heater; the switching condition comprises that the outlet water temperature is greater than the sum of the temperature determined according to the preset temperature curve and a second preset value, and the starting time is greater than a second starting threshold value; the control method further comprises the following steps: and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into the power-on excessive control mode.

In one embodiment, the control method further comprises: after the control mode of the water heater is switched to a constant temperature control mode, detecting whether the current firepower section of the water heater is consistent with the firepower section determined according to a preset temperature curve; under the condition that the firepower sections are inconsistent, switching the control mode of the water heater from the constant-temperature control mode to an emergency mode; and switching the current firepower section into a firepower section determined according to a preset temperature curve, and switching the control mode of the water heater from the emergency state mode to the constant temperature control mode after the first time length.

The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device:

acquiring the outlet water temperature of the water heater;

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

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

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A control method for a water heater, the control method comprising:

acquiring the water outlet temperature of the water heater;

determining whether the control mode of the water heater reaches a switching condition according to the adjusted outlet water temperature;

2. The control method according to claim 1, further comprising obtaining a turn-on time of the water heater;

the switching condition comprises that the regulated outlet water temperature is within a preset interval range, and the starting-up time is greater than a first time threshold;

the preset interval range is from a difference value between a preset set temperature and a first preset value to a sum of the preset set temperature and the first preset value.

3. The control method according to claim 1, further comprising obtaining a turn-on time of the water heater;

the switching condition comprises that the outlet water temperature is greater than the sum of the temperature determined according to the preset temperature curve and a second preset value, and the starting time is greater than a second starting threshold value;

the control method further comprises the following steps:

and under the condition that the control mode is determined to reach the switching condition, switching the control mode of the water heater into an over-starting control mode.

4. The control method according to claim 3, characterized by further comprising:

and after the control mode of the water heater is switched to the power-on transition control mode, switching the control mode of the water heater to the constant-temperature control mode after a preset delay time.

5. The control method according to claim 1, characterized by further comprising:

after the control mode of the water heater is switched to the constant temperature control mode, detecting whether the current firepower section of the water heater is consistent with the firepower section determined according to the preset temperature curve;

switching the control mode of the water heater from the constant-temperature control mode to an emergency mode under the condition that the firepower sections are inconsistent;

and switching the current firepower section into a firepower section determined according to the preset temperature curve, and switching the control mode of the water heater from the emergency state mode to the constant-temperature control mode after a first time length.

6. The control method according to claim 1, characterized by further comprising:

under the condition that single sudden change of the water flow speed is detected, the control mode of the water heater is switched from the constant-temperature control mode to a single sudden change state mode;

and adjusting the current firepower section according to the water flow speed, and switching the control mode of the water heater from the single sudden change state mode to the constant temperature control mode after a second time length.

7. The control method according to claim 1, characterized by further comprising:

under the condition that the flow rate of the water flow is detected to be changed continuously for a preset number of times in a one-way mode, the control mode of the water heater is switched from the constant-temperature control mode to a flow rate change state mode;

and under the condition that the flow of the water flow is determined to be stable and the stable time reaches a third time length, switching the control mode of the water heater from a flow change state mode to the constant temperature control mode.

8. The control method according to claim 1, wherein the adjusting the current fire segment of the water heater according to the preset temperature curve comprises:

determining a preset temperature value corresponding to the outlet water temperature on the preset temperature curve;

and adjusting the current firepower section of the water heater according to the outlet water temperature and the preset temperature value so as to adjust the outlet water temperature to the preset temperature value in the shortest time.

9. A control device for a water heater, the control device comprising:

a temperature sensor configured to obtain an outlet water temperature of the water heater;

a fire valve configured to adjust a current fire segment of the water heater according to a preset temperature curve to adjust the outlet water temperature; and

10. The control device according to claim 9, characterized by further comprising:

a time confirmation module configured to obtain a start-up time of the water heater;

the processor further configured to switch the control mode of the water heater to a thermostatic control mode if it is determined that the control mode reaches the switching condition;

the switching condition comprises that the regulated outlet water temperature is within a preset interval range, and the starting-up time is greater than a first time threshold; the preset interval range is from a difference value between a preset set temperature and a first preset value to a sum of the preset set temperature and the first preset value.

11. The control device according to claim 9, characterized by further comprising:

the processor is further configured to switch the control mode of the water heater to an over-start control mode if it is determined that the control mode reaches the switching condition;

12. The control device of claim 11, wherein the processor is further configured to:

13. A water heater, characterized in that it comprises a control device for a water heater as claimed in claim 9.

14. A processor characterized by being configured to execute the control method for a water heater according to any one of claims 1 to 8.

15. A machine-readable storage medium having stored thereon instructions for causing a machine to execute the control method for a water heater according to any one of claims 1 to 8.