CN116221995A - Water heater and control method, system, equipment and medium thereof - Google Patents

Water heater and control method, system, equipment and medium thereof Download PDF

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Publication number
CN116221995A
CN116221995A CN202310225834.1A CN202310225834A CN116221995A CN 116221995 A CN116221995 A CN 116221995A CN 202310225834 A CN202310225834 A CN 202310225834A CN 116221995 A CN116221995 A CN 116221995A
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China
Prior art keywords
water heater
water
flow threshold
temperature
target
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CN202310225834.1A
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Chinese (zh)
Inventor
黄启彬
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Priority to CN202310225834.1A priority Critical patent/CN116221995A/en
Publication of CN116221995A publication Critical patent/CN116221995A/en
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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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/176—Improving or maintaining comfort of users
    • F24H15/18—Preventing sudden or unintentional change of fluid temperature
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/215—Temperature of the water before heating
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/238—Flow rate
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/281—Input from user
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Fluid Mechanics (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

The present disclosure provides a water heater, and a control method, a system, a device and a medium thereof, the control method comprising: setting a target outlet water temperature of the water heater; acquiring an output heat value when the water heater is in a preset running state; obtaining a first flow threshold based on the target outlet water temperature and the output heat value; an operation control strategy of the water heater is determined based on the first flow threshold and the fixed flow threshold. According to the method and the device, the first flow threshold is obtained through the predetermined target water outlet temperature, the actual water inlet temperature and the output heat value of the water heater, and the target flow threshold is obtained through the first flow threshold and the fixed flow threshold, so that the heating stopping state of the water heater is controlled, the size of the target flow threshold is changed along with the change of the performance and the environmental condition of the water heater, the size of the target flow threshold is dynamically adjusted and controlled, the control accuracy and the rationality of the heating stopping state of the water heater are ensured, the safety of a user when the user uses hot water is ensured, and the use experience of the user is improved.

Description

Water heater and control method, system, equipment and medium thereof
Technical Field
The disclosure relates to the technical field of water heaters, and in particular relates to a water heater and a control method, a system, equipment and a medium thereof.
Background
At present, a fixed flow threshold is generally adopted to control the water heater to stop heating, and when the actual water flow passing through the water heater is smaller than the fixed flow threshold, the water heater is controlled to stop heating. However, when a user uses a cold and hot water mixing mode to perform bath and the like at the water end, a state that the cold water flow is large and the hot water flow is small is likely to occur, and the actual water flow passing through the water heater is too small in the state, so that the water heater stops heating, and further the warm water is mixed by the user, but the water is immediately changed into cold water, which causes trouble to the user and causes poor user experience.
Disclosure of Invention
The technical problem to be solved by the present disclosure is to overcome the defects that in the prior art, a fixed flow threshold is adopted to control a water heater to stop heating, cold water flows out when the water heater stops heating when a user mixes water for use, which causes trouble to the user and causes poor user experience, and the like, and to provide a water heater, a control method, a system, equipment and a medium thereof.
The technical problems are solved by the following technical scheme:
the present disclosure provides a control method of a water heater, the control method comprising:
setting a target water outlet temperature of the water heater;
acquiring an output heat value of the water heater in a preset running state;
obtaining a first flow threshold based on the target outlet water temperature and the output heat value;
and determining an operation control strategy of the water heater based on the first flow threshold and the fixed flow threshold.
Preferably, the step of determining the operation control strategy of the water heater based on the first flow threshold and the fixed flow threshold comprises:
when the first flow threshold is smaller than the fixed flow threshold, taking the first flow threshold as a target flow threshold;
when the first flow threshold is greater than or equal to the fixed flow threshold, taking the fixed flow threshold as the target flow threshold;
and when the actual water flow passing through the water heater is detected to be smaller than the target flow threshold, controlling the water heater to stop heating.
Preferably, the target outlet water temperature comprises a temperature equal to a temperature set by a user, a temperature higher than the temperature set by the user by a set value or a default outlet water temperature set by the water heater in a factory.
Preferably, the preset operation state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.
Preferably, the step of obtaining a first flow threshold value based on the target outlet water temperature and the output heat value includes:
acquiring the actual water inlet temperature of the water heater;
and calculating the first flow threshold based on the target outlet water temperature, the actual inlet water temperature and the output heat value.
Preferably, the calculation formula corresponding to the first flow threshold is calculated based on the target outlet water temperature, the actual inlet water temperature and the output heat value as follows:
q＝Q/(t 1 -t 2 )
wherein Q is used to characterize the first flow threshold, Q is used to characterize the output heat value, t 1 For characterizing the target outlet water temperature, t 2 For characterizing said actual inlet water temperature.
Preferably, the step of controlling the water heater to stop heating state when the detected actual water flow rate passing through the water heater is less than the target flow rate threshold value comprises:
when the actual water flow is detected to be smaller than the target flow threshold, judging whether the actual water flow is larger than a second preset flow threshold or not;
wherein the second preset flow threshold is less than the target flow threshold;
if so, controlling the water heater to work in the preset running state, and controlling the water heater to stop the heating state when detecting that the actual water outlet temperature of the water heater is greater than the sum of the target water outlet temperature and a preset temperature difference threshold;
if not, controlling the water heater to stop the heating state.
The present disclosure also provides a control system of a water heater, the control system comprising:
the target water outlet temperature setting module is used for setting the target water outlet temperature of the water heater;
the output heat quantity value acquisition module is used for acquiring the output heat quantity value of the water heater in a preset running state;
the first flow threshold obtaining module is used for obtaining a first flow threshold based on the target outlet water temperature and the output heat value;
and the operation control strategy determining module is used for determining the operation control strategy of the water heater based on the first flow threshold value and the fixed flow threshold value.
Preferably, the operation control strategy determining module comprises a target flow threshold determining unit and a control unit;
the target flow threshold determining unit is used for taking the first flow threshold as a target flow threshold when the first flow threshold is smaller than the fixed flow threshold;
the target flow threshold determining unit is further configured to, when the first flow threshold is greater than or equal to the fixed flow threshold, take the fixed flow threshold as the target flow threshold;
the control unit is used for controlling the water heater to stop heating when detecting that the actual water flow passing through the water heater is smaller than the target flow threshold.
Preferably, the target outlet water temperature comprises a temperature equal to a temperature set by a user, a temperature higher than the temperature set by the user by a set value or a default outlet water temperature set by the water heater in a factory.
Preferably, the preset operation state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.
Preferably, the first flow threshold value acquisition module comprises an actual inlet water temperature acquisition unit and a first flow threshold value determination unit;
the actual water inlet temperature acquisition unit is used for acquiring the actual water inlet temperature of the water heater;
the first flow threshold determining unit is used for calculating the first flow threshold based on the target water outlet temperature, the actual water inlet temperature and the output heat value.
Preferably, the calculation formula corresponding to the first flow threshold value calculated by the first flow threshold value determining unit is as follows:
q＝Q/(t 1 -t 2 )
wherein Q is used to characterize the first flow threshold, Q is used to characterize the output heat value, t 1 For characterizing the target outlet water temperature, t 2 For characterizing said actual inlet water temperature.
Preferably, the control unit comprises a judging subunit and a control subunit;
the judging subunit is used for judging whether the actual water flow is larger than a second preset flow threshold value or not when the actual water flow is detected to be smaller than the target flow threshold value;
wherein the second preset flow threshold is less than the target flow threshold;
if yes, the control subunit is used for controlling the water heater to work in the preset running state, and when detecting that the actual water outlet temperature of the water heater is greater than the sum of the target water outlet temperature and a preset temperature difference threshold value, the control subunit is used for controlling the water heater to stop the heating state;
if not, the control subunit is used for controlling the water heater to stop the heating state.
The present disclosure also provides a water heater comprising a control system of a water heater as described above.
The present disclosure also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and adapted to run on the processor, the processor implementing the control method of the water heater as described above when executing the computer program.
The present disclosure also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of controlling a water heater as described above.
On the basis of conforming to the common knowledge in the art, the preferred conditions can be arbitrarily combined to obtain the preferred examples of the disclosure.
The positive progress effect of the present disclosure is:
according to the method, the first flow threshold is obtained through the preset target water outlet temperature, the actual water inlet temperature and the output heat value of the water heater, and the target flow threshold is obtained through the first flow threshold and the fixed flow threshold, so that the heating stopping state of the water heater is controlled, the size of the target flow threshold of the water heater is changed along with the performance and environmental condition change of the water heater, the size of the target flow threshold is dynamically adjusted and controlled, the problem that when a user mixes water for use, the water heater stops heating due to too small water flow and flows out of cold water in the heating state is solved, and the safety of the user when the user uses hot water is also ensured; in addition, through increasing temperature reaction time, the problem that the water flow of the water heater is short time less than the target flow threshold value and the heating state of the water heater is stopped in the adjusting process of a user is solved, the accuracy and the rationality of the control of the heating state of the water heater are ensured, the trouble to the water consumption of the user is reduced, and the use experience of the user is improved.
Drawings
Fig. 1 is a flowchart of a control method of a water heater according to embodiment 1 of the present disclosure.
Fig. 2 is a flowchart of a control method of the water heater of embodiment 2 of the present disclosure.
Fig. 3 is a schematic block diagram of a control system of a water heater according to embodiment 3 of the present disclosure.
Fig. 4 is a schematic block diagram of a control system of a water heater according to embodiment 4 of the present disclosure.
Fig. 5 is a schematic structural view of a water heater according to embodiment 5 of the present disclosure.
Fig. 6 is a schematic structural diagram of an electronic device according to embodiment 6 of the present disclosure.
Detailed Description
The present disclosure is further illustrated by way of examples below, but is not thereby limited to the scope of the examples described.
Example 1
The present embodiment provides a control method of a water heater, as shown in fig. 1, including:
s101, setting target outlet water temperature of the water heater.
S102, obtaining an output heat value when the water heater is in a preset running state.
The execution sequence of steps S101 and S102 may be exchanged or may be executed simultaneously.
S103, obtaining a first flow threshold based on the target outlet water temperature and the output heat value.
In the present embodiment, when the water heater (for example, gas water heater) is designed, the standard output heat value Q of the gas water heater is measured in the state that different gas proportional threshold current values are measured in the standard state 1 . The standard output heat quantity value is calculated by Q 1 ＝q 1 (t c -t j ). Wherein q 1 To calibrate the corresponding water flow value, t when the standard output heat value of a certain fuel gas proportional valve current value is calibrated c T is the current outlet water temperature j The water inlet temperature at that time. Wherein the lower limit of the standard heat quantity value is Q min Corresponding to the minimum load of the water heater; the upper limit of the standard heat value is Q max Corresponding to the maximum load of the water heater.
At the time of determining the target outlet water temperature t 1 Obtaining an output heat value Q and an actual water inlet temperature t when the water heater is in a preset running state 2 After that, q=q/(t) by the formula 1 -t 2 ) The target flow threshold q may be calculated. As can be seen from the formula (i),the lower the output heat quantity value of the water heater is set, the lower the target flow threshold value can be set; the lower the inlet water temperature, the lower the target flow threshold may be set. The target flow threshold is determined by comprehensively considering the factors such as the output heat value, the target outlet water temperature, the actual inlet water temperature and the like, so that the size of the target flow threshold is changed along with the performance and environmental condition changes of the water heater, and the size of the target flow threshold is dynamically adjusted and controlled.
S104, determining an operation control strategy of the water heater based on the first flow threshold and the fixed flow threshold.
In the present embodiment, the minimum output heat value when the water heater is in the heating state is Q min When the water inlet temperature is unchanged, the flow rate of hot water can be too low when a user mixes water for use, if the water heater does not stop heating state, the actual water outlet temperature can be too high, if the user completely adjusts the faucet to the hot water state, scalding accidents can possibly occur, the size of the target flow rate threshold is controlled through dynamic adjustment, the target flow rate threshold is not directly reduced, and the safety of the user when the user uses hot water is ensured.
In this embodiment, the first flow threshold is obtained through the predetermined target outlet water temperature and the output heat value of the water heater, and the operation control strategy of the water heater is determined through the first flow threshold and the fixed flow threshold, so that the problem that the water heater stops heating and flows out of cold water due to too small water flow when a user mixes water for use is solved, the safety of the user when using hot water is also ensured, the accuracy and rationality of the operation control strategy of the water heater are ensured, the trouble caused to the user caused by water consumption is reduced, and the use experience of the user is improved.
Example 2
The present embodiment provides a control method of a water heater, which is a further improvement of embodiment 1, as shown in fig. 2.
In one embodiment, step S104 includes:
s1041, when the first flow threshold is smaller than the fixed flow threshold, taking the first flow threshold as a target flow threshold;
s1042, when the first flow threshold is greater than or equal to the fixed flow threshold, taking the fixed flow threshold as a target flow threshold;
s1043, when the actual water flow passing through the water heater is detected to be smaller than the target flow threshold, controlling the water heater to stop heating.
In this embodiment, after the first flow rate threshold is obtained based on the formula, the first flow rate threshold is compared with a fixed flow rate threshold (for example, 2L/min) used in the prior art, and the smaller value of the first flow rate threshold and the fixed flow rate threshold is selected as the target flow rate threshold.
In one embodiment, the target outlet water temperature comprises a temperature equal to a user-set temperature, a temperature higher than the user-set temperature by a set value, or a default outlet water temperature of the water heater factory setting.
In this embodiment, the target outlet water temperature may be higher than the temperature set by the user by a set value, or may be lower than the temperature set by the user by a set value, and the specific value may be set or adjusted according to the actual situation.
The default outlet temperature of the water heater can be preset according to the actual use condition of the hot water in the water heater, for example, when a user is in bath, the hot water is required to be at a temperature which is not easy to scald, for example, 50 ℃, and the temperature is taken as the target outlet temperature.
In addition, statistical data of the temperature set by the user in the history period, such as an average value, a median, a mode, and the like, may be obtained as the target outlet water temperature.
In one embodiment, the preset operating state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.
In one embodiment, step S103 includes:
s1031, acquiring the actual water inlet temperature of the water heater;
s1032, calculating a first flow threshold based on the target outlet water temperature, the actual inlet water temperature and the output heat value.
In one embodiment, based on the target outlet water temperature, the actual inlet water temperature and the output heat value, the calculation formula corresponding to the first flow threshold is calculated as follows:
q＝Q/(t 1 -t 2 )
wherein Q is used for representing a first flow threshold, Q is used for representing an output heat value, t 1 For characterizing target outlet water temperature, t 2 Used for representing the actual inlet water temperature.
In one embodiment, step S1043 includes:
s10431, when the actual water flow is detected to be smaller than a target flow threshold, judging whether the actual water flow is larger than a second preset flow threshold;
the second preset flow threshold is smaller than the target flow threshold;
if yes, go to step S10432;
if not, step S10433 is performed.
S10432, controlling the water heater to work in a preset running state, and controlling the water heater to stop heating when detecting that the actual outlet water temperature of the water heater is greater than the sum of the target outlet water temperature and a preset temperature difference threshold;
s10433, controlling the water heater to stop heating.
In this embodiment, the second preset flow threshold is a relatively small value, for example, 0.5L/min, when the actual water flow is between the value and the target flow threshold, the water heater is not directly controlled to stop heating, but is controlled to work in a minimum load state, when the actual water outlet temperature is detected to be higher than the target water outlet temperature by a certain value, the water heater is controlled to stop heating, and the problem that the water heater stops heating due to the fact that the water flow of the water heater is smaller than the target flow threshold in a short time in the user adjusting process is solved by the temperature reaction time; and when the actual water flow is smaller than a second preset flow threshold, directly controlling the water heater to stop heating.
When the target outlet water temperature is the temperature set by the user, the numerical value of the second preset temperature difference threshold value can be set or adjusted according to the actual situation; when the target outlet water temperature is higher than the temperature set by the user or is the default outlet water temperature set by the water heater, if the target outlet water temperature is a temperature which is not easy to scald, such as 50 ℃, the second preset temperature difference threshold can be set or adjusted to be a smaller value, so that the safety of the user when using hot water is ensured.
In one embodiment, the control method further comprises:
when the actual water flow is detected to be larger than a third preset flow threshold, controlling the water heater to start a heating state;
wherein the third preset flow threshold is greater than the target flow threshold.
In this embodiment, the third preset flow threshold may be 2.5L/min, and specific data may be set or adjusted according to actual situations, which is not specifically limited herein.
The following describes the working principle of the control method of the water heater according to the present embodiment with reference to specific examples:
setting a target water outlet temperature, wherein the target water outlet temperature can be a temperature set by a user, can be a temperature higher than the temperature set by the user by a set value, and can also be a default water outlet temperature set by a water heater in a factory; calculating to obtain a first flow threshold according to the target outlet water temperature, the detected actual inlet water temperature of the water heater and the known minimum output heat value of the water heater; comparing the first flow threshold value with the fixed flow threshold value, and selecting the smaller flow threshold value as a target flow threshold value; when the actual water flow of the water heater is detected to be larger than a third preset flow threshold, controlling the water heater to start a heating state; when the actual water flow of the water heater is detected to be smaller than the target flow threshold, controlling the water heater to work in a heating state corresponding to the minimum output heat value, and controlling the water heater to stop the heating state until the actual water outlet temperature of the water heater is detected to be larger than a certain value of the target water outlet temperature; and when the actual water flow of the water heater is detected to be smaller than a second preset flow threshold, directly controlling the water heater to stop heating.
In the embodiment, the first flow threshold is obtained through the preset target water outlet temperature, the actual water inlet temperature and the output heat value of the water heater, and the target flow threshold is obtained through the first flow threshold and the fixed flow threshold, so that the water heater is controlled to stop heating, the size of the target flow threshold of the water heater is changed along with the change of the performance and the environmental condition of the water heater, the size of the target flow threshold is dynamically adjusted and controlled, the problem that when a user mixes water for use, the water heater stops heating due to too small water flow and flows out of cold water in the heating state is solved, and the safety of the user when the user uses hot water is also ensured; in addition, through increasing temperature reaction time, the problem that the water flow of the water heater is short time less than the target flow threshold value and the heating state of the water heater is stopped in the adjusting process of a user is solved, the accuracy and the rationality of the control of the heating state of the water heater are ensured, the trouble to the water consumption of the user is reduced, and the use experience of the user is improved.
Example 3
The present embodiment provides a control system of a water heater, as shown in fig. 3, the control system includes:
the target outlet water temperature setting module 1 is used for setting the target outlet water temperature of the water heater;
the output heat value acquisition module 2 is used for acquiring the output heat value when the water heater is in a preset running state;
the first flow threshold value acquisition module 3 is used for acquiring a first flow threshold value based on the target outlet water temperature and the output heat value;
the operation control strategy determining module 4 is configured to determine an operation control strategy of the water heater based on the first flow threshold and the fixed flow threshold.
The working principle of the present embodiment is the same as that of the control method of the water heater corresponding to embodiment 1, and will not be discussed here.
In this embodiment, the first flow threshold is obtained through the predetermined target outlet water temperature and the output heat value of the water heater, and the operation control strategy of the water heater is determined through the first flow threshold and the fixed flow threshold, so that the problem that the water heater stops heating and flows out of cold water due to too small water flow when a user mixes water for use is solved, the safety of the user when using hot water is also ensured, the accuracy and rationality of the operation control strategy of the water heater are ensured, the trouble caused to the user caused by water consumption is reduced, and the use experience of the user is improved.
Example 4
The present embodiment provides a control system for a water heater, which is a further improvement of embodiment 3, as shown in fig. 4.
In an embodiment, the operation control policy determination module 4 includes a target flow threshold determination unit 41 and a control unit 42;
the target flow rate threshold value determining unit 41 is configured to set the first flow rate threshold value as a target flow rate threshold value when the first flow rate threshold value is smaller than the fixed flow rate threshold value;
the target flow rate threshold value determining unit 41 is further configured to set the fixed flow rate threshold value as the target flow rate threshold value when the first flow rate threshold value is greater than or equal to the fixed flow rate threshold value;
the control unit 42 is configured to control the water heater to stop heating when it is detected that the actual water flow rate through the water heater is less than the target flow rate threshold.
In one embodiment, the target outlet water temperature comprises a temperature equal to a user-set temperature, a temperature higher than the user-set temperature by a set value, or a default outlet water temperature of the water heater factory setting.
In one embodiment, the preset operating state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.
In an embodiment, the first flow threshold value obtaining module 3 includes an actual inlet water temperature obtaining unit 31 and a first flow threshold value determining unit 32;
the actual water inlet temperature acquiring unit 31 is used for acquiring the actual water inlet temperature of the water heater;
the first flow threshold determining unit 32 is configured to calculate a first flow threshold based on the target outlet water temperature, the actual inlet water temperature, and the output heat value.
In one embodiment, the calculation formula corresponding to the first flow threshold value calculated by the first flow threshold value determining unit 32 is as follows:
q＝Q/(t 1 -t 2 )
wherein Q is used for representing a first flow threshold, Q is used for representing an output heat value, t 1 For characterizing target outlet water temperature, t 2 Used for representing the actual inlet water temperature.
In an embodiment, the control unit 42 includes a judging subunit 421 and a control subunit 422;
the judging subunit 421 is configured to judge whether the actual water flow is greater than a second preset flow threshold when the actual water flow is detected to be less than the target flow threshold;
the second preset flow threshold is smaller than the target flow threshold;
if yes, the control subunit 422 is configured to control the water heater to operate in a preset operation state, and when detecting that the actual outlet water temperature of the water heater is greater than the sum of the target outlet water temperature and the preset temperature difference threshold, control the water heater to stop heating;
if not, the control subunit 422 is configured to control the water heater to stop heating.
The operation principle of this embodiment is the same as that of the control method of the water heater corresponding to embodiment 2, and will not be discussed here.
In the embodiment, the first flow threshold is obtained through the preset target water outlet temperature, the actual water inlet temperature and the output heat value of the water heater, and the target flow threshold is obtained through the first flow threshold and the fixed flow threshold, so that the water heater is controlled to stop heating, the size of the target flow threshold of the water heater is changed along with the change of the performance and the environmental condition of the water heater, the size of the target flow threshold is dynamically adjusted and controlled, the problem that when a user mixes water for use, the water heater stops heating due to too small water flow and flows out of cold water in the heating state is solved, and the safety of the user when the user uses hot water is also ensured; in addition, through increasing temperature reaction time, the problem that the water flow of the water heater is short time less than the target flow threshold value and the heating state of the water heater is stopped in the adjusting process of a user is solved, the accuracy and the rationality of the control of the heating state of the water heater are ensured, the trouble to the water consumption of the user is reduced, and the use experience of the user is improved.
Example 5
The present embodiment provides a water heater including the control system of the water heater according to embodiment 3 or 4.
As shown in fig. 5, a schematic structural diagram of a water heater is shown, the water heater is a gas water heater, and includes a water inlet 801 and a water outlet 802, a water inlet temperature sensor 803 and a water flow sensor 804 are disposed on a pipeline where the water inlet 801 is located, and a water outlet temperature sensor 805 is disposed on a pipeline where the water outlet 802 is located. The inlet water temperature sensor 803 is used for acquiring the actual inlet water temperature, the water flow sensor 804 is used for acquiring the actual water flow through the water heater, and the outlet water temperature sensor 805 is used for acquiring the actual outlet water temperature.
The water heater also includes an air inlet 806, a gas proportioning valve 807, a fan 808, a segmented pipe 809, a burner 810, a heat exchanger 811, and an electrical controller assembly 812. The electric controller assembly 812 is used to control the operation state of the water heater.
The water heater in the embodiment is integrally provided with the control system, the first flow threshold is obtained through the predetermined target water outlet temperature, the actual water inlet temperature and the output heat value of the water heater, and the target flow threshold is obtained through the first flow threshold and the fixed flow threshold, so that the heating stop state of the water heater is controlled, the size of the target flow threshold of the water heater is changed along with the change of the performance and the environmental condition of the water heater, the size of the target flow threshold is dynamically adjusted and controlled, the problem that when a user mixes water for use, the water heater stops heating due to too small water flow and flows out cold water is solved, and the safety of the user when the user uses hot water is also ensured; in addition, through increasing temperature reaction time, the problem that the water flow of the water heater is short time less than the target flow threshold value and the heating state of the water heater is stopped in the adjusting process of a user is solved, the accuracy and the rationality of the control of the heating state of the water heater are ensured, the trouble to the water consumption of the user is reduced, and the use experience of the user is improved.
Example 6
Fig. 6 is a schematic structural diagram of an electronic device according to embodiment 6 of the present disclosure. Comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program to realize the control method of the water heater in the embodiment. The electronic device 90 shown in fig. 6 is merely an example and should not be construed to limit the functionality and scope of use of embodiments of the present disclosure in any way.
The electronic device 90 may be in the form of a general purpose computing device, which may be a server device, for example. Components of the electronic device 90 may include, but are not limited to: the at least one processor 91, the at least one memory 92, a bus 93 connecting the different system components, including the memory 92 and the processor 91.
The bus 93 includes a data bus, an address bus, and a control bus.
The memory 92 may include volatile memory such as Random Access Memory (RAM) 921 and/or cache memory 922, and may further include Read Only Memory (ROM) 923.
Memory 92 may also include a program/utility 925 having a set (at least one) of program modules 924, such program modules 924 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The processor 91 executes various functional applications and data processing, such as a control method of the water heater in the above-described embodiment of the present disclosure, by running a computer program stored in the memory 92.
The electronic device 90 may also communicate with one or more external devices 94 (e.g., keyboard, pointing device, etc.). Such communication may occur through an input/output (I/O) interface 95. Also, model-generating device 90 may also communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the internet via network adapter 96. As shown, the network adapter 96 communicates with other modules of the model-generating device 90 via the bus 93. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in connection with the model-generating device 90, including, but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, data backup storage systems, and the like.
It should be noted that although several units/modules or sub-units/modules of an electronic device are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more units/modules described above may be embodied in one unit/module in accordance with embodiments of the present disclosure. Conversely, the features and functions of one unit/module described above may be further divided into ones that are embodied by a plurality of units/modules.
Example 7
The present disclosure also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a control method of a water heater as in the above embodiments.
More specifically, among others, readable storage media may be employed including, but not limited to: portable disk, hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible implementation, the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out a control method implementing a water heater as in the above-described embodiments, when the program product is run on the terminal device.
Wherein the program code for carrying out the present disclosure may be written in any combination of one or more programming languages, which program code may execute entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device, partly on the remote device or entirely on the remote device.
While specific embodiments of the present disclosure have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the disclosure is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the disclosure, but such changes and modifications fall within the scope of the disclosure.

Claims (11)

1. A control method of a water heater, the control method comprising:
setting a target water outlet temperature of the water heater;
acquiring an output heat value of the water heater in a preset running state;
obtaining a first flow threshold based on the target outlet water temperature and the output heat value;
and determining an operation control strategy of the water heater based on the first flow threshold and the fixed flow threshold.
2. The method of controlling a water heater according to claim 1, wherein the step of determining an operation control strategy of the water heater based on the first flow threshold and a fixed flow threshold comprises:
when the first flow threshold is smaller than the fixed flow threshold, taking the first flow threshold as a target flow threshold;
when the first flow threshold is greater than or equal to the fixed flow threshold, taking the fixed flow threshold as the target flow threshold;
and when the actual water flow passing through the water heater is detected to be smaller than the target flow threshold, controlling the water heater to stop heating.
3. The control method of a water heater as claimed in claim 2, wherein the target outlet water temperature includes a temperature equal to a user-set temperature, a temperature higher than the user-set temperature by a set value, or a default outlet water temperature set by a factory of the water heater.
4. The method for controlling a water heater according to claim 2, wherein the preset operation state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.
5. The method of controlling a water heater according to claim 4, wherein the step of obtaining a first flow threshold value based on the target outlet water temperature and the output heat value comprises:
acquiring the actual water inlet temperature of the water heater;
and calculating the first flow threshold based on the target outlet water temperature, the actual inlet water temperature and the output heat value.
6. The method for controlling a water heater according to claim 5, wherein the calculation formula corresponding to the first flow threshold is calculated based on the target outlet water temperature, the actual inlet water temperature and the output heat value as follows:
q＝Q/(t 1 -t 2 )
wherein Q is used to characterize the first flow threshold, Q is used to characterize the output heat value, t 1 For characterizing the target outlet water temperature, t 2 For characterizing said actual inlet water temperature.
7. The control method of a water heater as claimed in any one of claims 2 to 6, wherein the step of controlling the water heater to stop heating state when it is detected that the actual water flow rate through the water heater is less than the target flow rate threshold value comprises:
when the actual water flow is detected to be smaller than the target flow threshold, judging whether the actual water flow is larger than a second preset flow threshold or not;
wherein the second preset flow threshold is less than the target flow threshold;
if so, controlling the water heater to work in the preset running state, and controlling the water heater to stop the heating state when detecting that the actual water outlet temperature of the water heater is greater than the sum of the target water outlet temperature and a preset temperature difference threshold;
if not, controlling the water heater to stop the heating state.
8. A control system for a water heater, the control system comprising:
the target water outlet temperature setting module is used for setting the target water outlet temperature of the water heater;
the output heat quantity value acquisition module is used for acquiring the output heat quantity value of the water heater in a preset running state;
the first flow threshold obtaining module is used for obtaining a first flow threshold based on the target outlet water temperature and the output heat value;
and the operation control strategy determining module is used for determining the operation control strategy of the water heater based on the first flow threshold value and the fixed flow threshold value.
9. A water heater comprising the control system of the water heater of claim 8.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory for running on the processor, characterized in that the processor implements the control method of the water heater according to any one of claims 1-7 when executing the computer program.
11. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements a method of controlling a water heater as claimed in any one of claims 1-7.
CN202310225834.1A 2023-03-10 2023-03-10 Water heater and control method, system, equipment and medium thereof Pending CN116221995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310225834.1A CN116221995A (en) 2023-03-10 2023-03-10 Water heater and control method, system, equipment and medium thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310225834.1A CN116221995A (en) 2023-03-10 2023-03-10 Water heater and control method, system, equipment and medium thereof

Publications (1)

Publication Number Publication Date
CN116221995A true CN116221995A (en) 2023-06-06

Family

ID=86585501

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310225834.1A Pending CN116221995A (en) 2023-03-10 2023-03-10 Water heater and control method, system, equipment and medium thereof

Country Status (1)

Country Link
CN (1) CN116221995A (en)

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