CN113701360B - Control method of water heater system, water heater and water heater system - Google Patents
Control method of water heater system, water heater and water heater system Download PDFInfo
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- CN113701360B CN113701360B CN202111010816.9A CN202111010816A CN113701360B CN 113701360 B CN113701360 B CN 113701360B CN 202111010816 A CN202111010816 A CN 202111010816A CN 113701360 B CN113701360 B CN 113701360B
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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
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- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
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Abstract
The application relates to a control method of a water heater system, a water heater and the water heater system. The control method comprises the following steps: acquiring a first target water flow and a second target water flow; the first target water flow refers to the water flow of the hot water pipe flowing into the cold water pipe detected by the first water flow sensor, and the second target water flow refers to the water flow of the hot water pipe flowing into the water inlet pipe; and if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is greater than the first target water flow, controlling the water heater to be in a heating state. By adopting the control method, the phenomenon of false start of the water heater in the using process can be avoided, so that the service life of the water heater is prolonged, and the gas consumption is saved.
Description
Technical Field
The application relates to the technical field of water heaters, in particular to a control method of a water heater system, a water heater and the water heater system.
Background
The existing zero-cold water heater is generally divided into a three-pipeline scheme (hot water pipe, cold water pipe and water return pipe) and a two-pipeline scheme (hot water pipe and cold water pipe). When the zero-cold-water heater adopts a two-pipeline scheme, a cold water pipe is required to be used as a water return pipe because a water return pipe is not installed, and the cold water pipe and a hot water pipe are connected through a one-way valve to form a circulation loop. When a user uses cold water at a water consumption point, part of the cold water can reach the water consumption point through the zero-cold-water heater and the hot water pipe, for example, the current popular intelligent closestool has water flow of 20L/min (liter/min) when the intelligent closestool is flushed, and the water flow passing through the water heater can reach 5L/min (liter/min) through tests, and the starting flow value of the zero-cold-water heater on the market is mostly 2.5L/min to 3L/min (liter/min), so that the zero-cold-water heater can be started by mistake when the intelligent closestool is flushed, thereby causing waste of gas and shortening the service life of the zero-cold-water heater.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a control method for a water heater system, which can effectively avoid the phenomenon of false start of the water heater during the use process, prolong the service life of the water heater and save the gas consumption.
The second technical problem to be solved by the invention is to provide a zero-cold water heater, which can effectively avoid the phenomenon of false start of the zero-cold water heater in the using process, prolong the service life of the zero-cold water heater and save the gas consumption.
The third technical problem to be solved by the present invention is to provide a water heater system, which can effectively avoid the phenomenon of false start of the zero-cold water heater during the use process, prolong the service life of the zero-cold water heater, and save the gas consumption.
The first technical problem is solved by the following technical scheme:
a control method of a water heater system comprises a hot water pipe, a cold water pipe, a connecting pipe, a first water flow sensor and a water heater; one end of the hot water pipe and one end of the cold water pipe are respectively used for being connected to a water consumption point, the other end of the hot water pipe is connected with a water outlet pipe of the water heater, and the other end of the cold water pipe is connected with a water inlet pipe of the water heater; the connecting pipe is connected between the hot water pipe and the cold water pipe at the farthest water using point; the first water flow sensor is arranged on the connecting pipe and connected with the water heater; the control method comprises the following steps: acquiring a first target water flow and a second target water flow; the first target water flow refers to the water flow of the hot water pipe flowing into the cold water pipe detected by the first water flow sensor, and the second target water flow refers to the water flow of the water flowing into the water inlet pipe;
and if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is greater than the first target water flow, controlling the water heater to be in a heating state.
According to the control method of the water heater system, the water heater is controlled to be in a heating state by acquiring the first target water flow and the second target water flow and when the second target water flow is larger than or equal to the starting water flow threshold and the second target water flow is larger than the first target water flow; the time that a user opens a hot water end and needs to obtain hot water in a hot water pipe in a water heater system is accurately identified, and the water heater is controlled to be in a heating state at the corresponding time, so that the phenomenon of false starting of the water heater in the using process is avoided, the service life of the water heater is prolonged, and the gas consumption is saved.
In one embodiment, the water heater further comprises a solenoid valve; the electromagnetic valve is arranged on the water inlet pipe and is used for controlling whether water in the cold water pipe flows into the water inlet pipe or not; the step of obtaining the first target water flow and the second target water flow further comprises: receiving a starting-up control signal; the starting control signal is used for indicating the water heater to enter a standby state and controlling the electromagnetic valve to be opened so as to enable water in the cold water pipe to flow into the water inlet pipe; therefore, the embodiment ensures that the user can use the water in the water heater in real time, and the convenience of the water heater is improved.
In one embodiment, the control method of the water heater system further comprises: if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is equal to the first target water flow, controlling the water heater to be in a standby state, and controlling the electromagnetic valve to be closed so as to stop water in the cold water pipe from flowing into the water inlet pipe; therefore, the present embodiment increases the life of the water heater and saves gas and water usage.
In one embodiment, the step of controlling the solenoid valve to close further comprises: updating the first target water flow; if the first target water flow is smaller than or equal to the target minimum water flow, the electromagnetic valve is controlled to be opened, and the steps of obtaining the first target water flow and the second target water flow are returned; the target minimum water flow rate is the minimum value of the water flow rate of the hot water pipe flowing into the cold water pipe; therefore, the embodiment enables the user to timely acquire hot water in the hot water pipe in the water heater system when the user opens the hot water end, and improves the convenience of the water heater system.
In one embodiment, the control method of the water heater system further comprises: if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is smaller than the first target water flow, after a preset waiting time, returning to the step of obtaining the first target water flow and the second target water flow; therefore, the embodiment can avoid that residual water in the hot water pipe branches flows into the hot water pipe, so that whether the water heater needs to enter a heating state or not can not be accurately judged.
In one embodiment, the step of updating the first target water flow further comprises: if the first target water flow is greater than the target minimum water flow, the solenoid valve is kept closed. Therefore, the present embodiment improves the energy saving of the water heater system.
In one embodiment, the step of controlling the solenoid valve to open and return to obtaining the first target water flow and the second target water flow comprises: and controlling the electromagnetic valve to be opened, and returning to the step of obtaining the first target water flow and the second target water flow when the opening time of the electromagnetic valve is greater than or equal to the preset time. Therefore, the present embodiment avoids the occurrence of the phenomenon of water shortage or insufficient water amount in the hot water pipe 100 in the water heater system, and improves the convenience of the water heater system.
In one embodiment, the control method further comprises: and if the second target water flow is smaller than the starting water flow threshold, controlling the water heater to be in a standby state. Therefore, the embodiment improves the energy saving performance of the water heater system.
The second technical problem is solved by the following technical solutions:
the water heater comprises a second water flow sensor and a controller; the second water flow sensor is arranged on a water inlet pipe of the water heater, is connected with the controller and is used for detecting second target water flow; the controller stores a computer program, and when the controller executes the computer program, the controller realizes the steps of any method in the control method embodiment of the water heater system.
According to the water heater, the controller obtains the first target water flow and the second target water flow detected by the second water flow sensor, and controls the water heater to be in a heating state when the second target water flow is larger than or equal to the starting water flow threshold and the second target water flow is larger than the first target water flow; the time when the user opens the hot water end and needs to obtain hot water in the hot water pipe in the water heater system is accurately identified, and the water heater is controlled to be in a heating state at the corresponding time, so that the phenomenon of false start of the water heater in the using process is avoided, the service life of the water heater is prolonged, and the gas consumption is saved.
The third technical problem is solved by the following technical scheme:
the water heater system comprises a hot water pipe, a cold water pipe, a connecting pipe, a first water flow sensor and the water heater in the embodiment; one end of the hot water pipe and one end of the cold water pipe are respectively used for being connected to a water consumption point, the other end of the hot water pipe is connected with a water outlet pipe of the water heater, and the other end of the cold water pipe is connected with a water inlet pipe of the water heater; the connecting pipe is connected between the hot water pipe and the cold water pipe at the farthest water using point.
According to the water heater system, the controller obtains the first target water flow and the second target water flow, and controls the water heater to be in a heating state when the second target water flow is larger than or equal to the starting water flow threshold and the second target water flow is larger than the first target water flow; the moment when a user opens a hot water end and needs to obtain hot water in a hot water pipe in a water heater system is accurately identified, and the water heater is controlled to be in a heating state at the corresponding moment, so that the phenomenon of false starting of the water heater in the using process is avoided, the service life of the water heater is prolonged, and the gas consumption is saved; the first water flow sensor is arranged on the connecting pipe and connected with the water heater.
Drawings
FIG. 1 is a diagram of an exemplary implementation of a method for controlling a water heater system;
FIG. 2 is a first schematic flow chart diagram of a method of controlling a water heater system in one embodiment;
FIG. 3 is a second flow chart of a method of controlling a water heater system in accordance with another embodiment;
FIG. 4 is a third flow chart illustrating a method of controlling a water heater system according to another embodiment;
FIG. 5 is a fourth schematic flow chart diagram of a method for controlling a water heater system in another embodiment;
FIG. 6 is a fifth flowchart illustrating a method for controlling a water heater system according to another embodiment;
FIG. 7 is a block diagram of a control device of the water heater system in one embodiment;
FIG. 8 is an internal block diagram of a controller in one embodiment;
FIG. 9 is an internal block diagram of the water heater in one embodiment;
FIG. 10 is a schematic diagram of the internal structure of the controller according to one embodiment;
FIG. 11 is a schematic diagram of the internal structure of the water heater system in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
The embodiment of the application provides a control method of a water heater system, a water heater and the water heater system, which can avoid the phenomenon of false start of the water heater in the use process, thereby prolonging the service life of the water heater and saving the gas consumption.
In the following, an application environment of the control method of the water heater system provided by the embodiment of the present application will be briefly described. In one specific example, as shown in fig. 1, the application environment is a water heater system comprising a hot water pipe 100, a cold water pipe 200, a water heater 300, a first water flow sensor 400, and a connecting pipe 500; one end of the hot water pipe 100 and one end of the cold water pipe 200 are respectively used for connecting to a water consumption point, the other end of the hot water pipe 100 is connected with the water outlet pipe 360 of the water heater 300, and the other end of the cold water pipe 200 is connected with the water inlet pipe 350 of the water heater 300; the connection pipe 500 is connected between the hot water pipe 100 and the cold water pipe 200 of the farthest water using point; the first water flow sensor 400 is disposed on the connection pipe 500 and connected to the water heater 300. The farthest water consumption point refers to a water consumption point of all water consumption points, wherein the water pipeline of the farthest water consumption point is farthest from the water heater, and the other end of the cold water pipe 200 is also used for connecting to an external water supply port. In addition, the control method of the water heater system provided by the present application can be applied to the controller of the water heater 300 shown in fig. 1.
In one embodiment, as shown in FIG. 2, a method of controlling a water heater system is provided, the method comprising steps 202 through 204.
The first target water flow rate is the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200 detected by the first water flow rate sensor 400, and the second target water flow rate is the water flow rate of the water inlet pipe of the water heater 300.
And 204, if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is greater than the first target water flow, controlling the water heater to be in a heating state.
The threshold water flow rate is the minimum water flow rate required to heat the water heater 300. In one embodiment, the start-up water flow threshold may be, but is not limited to being, preset based on the water capacity of the water heater 300. In one particular example, the startup water flow threshold may be, but is not limited to, 2L/min (liters per minute). The controller obtains a first target water flow and a second target water flow, and controls the water heater 300 to start a heating state when the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is greater than the first target water flow.
In one specific example, controlling the water heater 300 to be in a heating state refers to activating an ignition needle of the water heater so that a flame signal is present in a combustion chamber of the water heater 300 to achieve a state of heating water in the water heater 300. The above are only specific examples, and may be flexibly set according to requirements in practical applications, and are not limited herein.
In one specific example, when the second target water flow rate obtained by the controller is greater than or equal to the starting water flow rate threshold, it indicates that the water flow rate of the water inlet pipe of the water heater 300 is greater than or equal to the starting water flow rate threshold; meanwhile, if the second target water flow rate obtained by the controller is greater than the first target water flow rate, it indicates that the water flow rate of the water inlet pipe of the water heater 300 is greater than the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200, so that it is accurately identified that the user opens the hot water end to obtain hot water in the hot water pipe in the water heater system, and the controller controls the water heater 300 to be started, so that the water heater 300 is in a heating state. The above are only specific examples, and may be flexibly set according to requirements in practical applications, and are not limited herein.
In the control method of the water heater system, the water heater 300 is controlled to be in the heating state by acquiring the first target water flow and the second target water flow and when the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is greater than the first target water flow; the time when the user opens the hot water end and needs to obtain hot water in the hot water pipe in the water heater system is accurately identified, and the water heater is controlled to be in a heating state at the corresponding time, so that the phenomenon that the water heater 300 is started by mistake in the using process is avoided, the service life of the water heater is prolonged, and the gas consumption is saved.
In one embodiment, the water heater 300 further includes a solenoid valve 320; the electromagnetic valve 320 is disposed on the water inlet pipe of the water heater 300 and is used for controlling whether the water in the cold water pipe 200 flows into the water inlet pipe of the water heater 300; as shown in fig. 3, before the step of obtaining the first target water flow rate and the second target water flow rate, the method further includes:
The start-up control signal may instruct the water heater 300 to enter a standby state from an off state and control the electromagnetic valve 320 to open, so that the water in the cold water pipe 200 flows into the water inlet pipe of the water heater 300. In one particular example, controlling the water heater 300 to be in the off state refers to both the circuit and the gas pipe in the water heater being in the off state; controlling the water heater 300 to be in the standby state refers to a state where the circuit and the gas pipe in the water heater are in a conductive state, but the ignition needle of the water heater is not started, i.e., the combustion chamber of the water heater 300 does not have a flame signal. The above is only a specific example, and in practical applications, the above may be flexibly set according to requirements, and is not limited herein.
In the present embodiment, the electromagnetic valve 320 is provided at the water inlet pipe of the water heater 300, so that the water in the cold water pipe 200 stops flowing into the water inlet pipe of the water heater 300 when the electromagnetic valve is closed. Meanwhile, the controller receives the power-on control signal, and may instruct the water heater 300 to enter the standby state from the off state and control the electromagnetic valve 320 to open, so that the water in the cold water pipe 200 flows into the water inlet pipe of the water heater 300, thereby ensuring that the user can use the water in the water heater 300 in real time, and improving the convenience of the water heater 300.
In one embodiment, as shown in fig. 4, the control method of the water heater system further includes:
and step 205, if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is equal to the first target water flow, controlling the water heater to be in a standby state, and controlling the electromagnetic valve to be closed so as to stop water in the cold water pipe from flowing into the water inlet pipe.
When the second target water flow obtained by the controller is greater than or equal to the starting water flow threshold, it indicates that the water flow of the water inlet pipe of the water heater 300 is greater than or equal to the starting water flow threshold; meanwhile, the second target water flow rate obtained by the controller is equal to the first target water flow rate, which indicates that the water flow rate of the water inlet pipe of the water heater 300 is equal to the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200, that is, all water in the water inlet pipe of the water heater 300 flows into the cold water pipe 200 through the hot water pipe 100, that is, the hot water end is not opened by the user, so that the water heater 300 is controlled to be in a standby state, and the electromagnetic valve is controlled to be closed, so that the water in the cold water pipe 200 stops flowing into the water inlet pipe of the water heater 300. The control of the water heater 300 in the standby state may be to change the water heater 300 from the heating state to the standby state, or may be to keep the water heater 300 in the standby state.
In this embodiment, the time when the user does not open the hot water end to obtain hot water in the hot water pipe of the water heater system can be accurately identified by setting the second target water flow to be greater than or equal to the starting water flow threshold and setting the second target water flow to be equal to the first target water flow, the water heater is controlled to be in a standby state at a corresponding time, and the electromagnetic valve is controlled to be closed to stop water in the cold water pipe from flowing into the water inlet pipe, so that the service life of the water heater is prolonged, and the gas consumption and the water resource consumption are saved.
In one embodiment, as shown in fig. 5, the step of controlling the closing of the electromagnetic valve further includes:
the target minimum water flow rate is a minimum value of the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200. After the electromagnetic valve 320 is closed, the controller acquires the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200 again, namely the first target water flow rate; when the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200 is less than or equal to the target minimum water flow rate, the controller can accurately identify the time when the first target water flow rate is too small due to no water or insufficient water in the hot water pipe 100 in the water heater system, control the electromagnetic valve 320 to be opened at the corresponding time, and return to the step of obtaining the first target water flow rate and the second target water flow rate for iterative processing.
In this embodiment, after the electromagnetic valve 320 is closed, the first target water flow is updated, and after the first target water flow is less than or equal to the target minimum water flow, the electromagnetic valve 320 is controlled to be opened, and the step of obtaining the first target water flow and the second target water flow is returned to; therefore, a user can timely obtain hot water in the hot water pipe 100 in the water heater system when the user opens the hot water end, and the convenience of the water heater system is improved.
In one embodiment, the step of controlling the solenoid valve to open and return to obtaining the first target water flow rate and the second target water flow rate comprises:
and controlling the electromagnetic valve to be opened, and returning to the step of obtaining the first target water flow and the second target water flow when the opening time of the electromagnetic valve is greater than or equal to the preset time.
After the electromagnetic valve 320 is closed, the controller obtains the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200 again, namely the first target water flow rate; when the water flow of the hot water pipe 100 flowing into the cold water pipe 200 is less than or equal to the target minimum water flow, the controller can accurately identify the water consumption point closed by the user and the time when the first target water flow is too small due to no water or insufficient water in the hot water pipe 100 in the water heater system, control the solenoid valve 320 to open at the corresponding time, and when the opening time of the solenoid valve is greater than or equal to the preset time, return to the step of obtaining the first target water flow and the second target water flow to perform iterative processing.
In this embodiment, by controlling the solenoid valve to be opened, when the opening time of the solenoid valve is greater than or equal to the preset time, the steps of obtaining the first target water flow and the second target water flow are returned to for iterative processing, so that after the solenoid valve 320 is opened, water flow exists in the hot water pipe 100, and it is ensured that the first target water flow and the second target water flow can be obtained; meanwhile, the phenomenon that the hot water pipe 100 in the water heater system is empty of water or insufficient in water quantity is avoided, and the convenience of the water heater system is improved.
In a specific example, the preset time period may be, but is not limited to, 5s, and the target minimum flow rate may be, but is not limited to, 1L/min (liter/minute), which is only a specific example, and may be flexibly set according to a requirement in an actual application, and is not limited herein. In one embodiment, the step of updating the first target water flow further comprises: if the first target water flow is larger than the target minimum water flow, keeping the electromagnetic valve closed; that is, when the first target water flow is larger than the target minimum water flow, enough water still flows into the cold water pipe in the hot water pipe, so that the electromagnetic valve is only required to be kept in a closed state; therefore, the energy saving performance of the water heater system is improved.
In one embodiment, as shown in fig. 6, the control method of the water heater system further includes:
and step 206, if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is smaller than the first target water flow, after a preset waiting time, returning to the step of obtaining the first target water flow and the second target water flow.
When the second target water flow obtained by the controller is greater than or equal to the starting water flow threshold, it indicates that the water flow of the water inlet pipe of the water heater 300 is greater than or equal to the starting water flow threshold; meanwhile, the second target water flow rate obtained by the controller is smaller than the first target water flow rate, that is, the water flow rate of the water inlet pipe of the water heater 300 is smaller than the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200, which indicates that part of the water remaining in the branch of the hot water pipe 100 and the water in the water inlet pipe of the water heater 300 all flow into the cold water pipe 200 through the hot water pipe 100 at this time, so after the preset waiting time, the steps of obtaining the first target water flow rate and the second target water flow rate are returned to for the iterative processing. In a specific example, the waiting time may be, but is not limited to, 0.5s, which is only a specific example, and may be flexibly set according to a requirement in an actual application, and is not limited herein.
In this embodiment, when the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is smaller than the first target water flow, after the preset waiting time, the step of obtaining the first target water flow and the second target water flow is returned to, so that it is avoided that whether the water heater needs to enter a heating state or not can not be accurately judged due to the fact that residual water flows into the hot water pipe in the branch of the hot water pipe.
In one embodiment, the control method of the water heater system further includes: and if the second target water flow is smaller than the starting water flow threshold, controlling the water heater to be in a standby state.
The controller obtains a second target water flow by obtaining the second target water flow, and when the water flow of the water inlet pipe of the water heater 300, namely the second target water flow, is smaller than the starting water flow threshold; that is, at this time, the water flow rate of the inlet pipe of the water heater 300 does not satisfy the minimum water flow rate required for the water heater 300 to be in the heating state, so the water heater 300 is controlled to be in the standby state.
In this embodiment, when the second target water flow is smaller than the starting water flow threshold, the water heater is controlled to be in the standby state, so that the water heater 300 is prevented from being in the heating state when the second target water flow is smaller than the starting water flow threshold, the service life of the water heater is prolonged, and the gas consumption is saved.
It should be understood that although the various steps in the flow diagrams of fig. 2-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least some of the steps in fig. 2-6 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 7, there is provided a control device of a water heater system including a hot water pipe 100, a cold water pipe 200, a water heater 300, a first water flow sensor 400, and a connection pipe 500; one end of the hot water pipe 100 and one end of the cold water pipe 200 are respectively used for connecting to a water consumption point, the other end of the hot water pipe 100 is connected with a water outlet pipe of the water heater 300, and the other end of the cold water pipe 200 is connected with a water inlet pipe of the water heater 300; the connection pipe 500 is connected between the hot water pipe 100 and the cold water pipe 200 of the farthest water using point; the first water flow sensor 400 is disposed on the connection pipe 500 and connected to the water heater 300.
The water flow rate obtaining module 710 is configured to obtain a first target water flow rate and a second target water flow rate; the first target water flow is the water flow detected by the first water flow sensor 400 that the hot water pipe 100 flows into the cold water pipe 200, and the second target water flow is the water flow flowing into the water inlet pipe; the water heater control module 720 is configured to control the water heater 300 to be in the heating state when the second target water flow rate is greater than or equal to the starting water flow rate threshold and the second target water flow rate is greater than the first target water flow rate.
In one embodiment, the water heater 300 further includes a solenoid valve 320; the electromagnetic valve 320 is disposed on the water inlet pipe of the water heater 300 and is used for controlling whether the water in the cold water pipe 200 flows into the water inlet pipe of the water heater 300; the water heater control module 720 is further configured to receive a power-on control signal; the start-up control signal is used to instruct the water heater 300 to enter a standby state and control the solenoid valve 320 to open, so that the water in the cold water pipe 200 flows into the water inlet pipe.
In one embodiment, the water heater control module 720 is further configured to control the water heater 300 to be in a standby state and control the solenoid valve 320 to close when the second target water flow is greater than or equal to the start-up water flow threshold and the second target water flow is equal to the first target water flow, so as to stop the water in the cold water pipe 200 from flowing into the water inlet pipe.
In one embodiment, the water heater control module 720 is further configured to update the first target water flow rate; the water heater control module 720 is further configured to, after the control solenoid valve 320 is opened, return to the step of obtaining the first target water flow and the second target water flow when the first target water flow is less than or equal to the target minimum water flow; the target minimum water flow rate means a minimum value of the water flow rate of the hot water pipe 100 flowing into the cold water pipe 200.
In one embodiment, the water heater control module 720 is further configured to return to the step of obtaining the first target water flow rate and the second target water flow rate after a preset waiting time if the second target water flow rate is greater than or equal to the start-up water flow rate threshold and the second target water flow rate is less than the first target water flow rate.
In one embodiment, the water heater control module 720 is further configured to keep the solenoid valve 320 closed if the first target water flow rate is greater than the target minimum water flow rate.
In one embodiment, the water heater control module 720 returns to the step of obtaining the first target water flow and the second target water flow when the solenoid valve 320 is opened for a time greater than or equal to a preset time.
In one embodiment, the water heater control module 720 controls the water heater 300 to be in the standby state when the second target water flow rate is less than the start-up water flow rate threshold.
For specific limitations of the control device of the water heater system, reference may be made to the above limitations of the control method of the water heater system, which are not described herein again. The various modules in the control device of the water heater system described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a controller 810 is provided, and the controller 810 may be a terminal, and the internal structure thereof may be as shown in fig. 8. The controller 810 includes a processor, memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the controller 810 is configured to provide computational and control capabilities. The memory of the controller 810 includes a nonvolatile storage medium, an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The communication interface of the controller 810 is used for performing wired or wireless communication with an external terminal, and the wireless communication may be implemented by WIFI, an operator network, NFC (near field communication), or other technologies. The computer program is executed by a processor to implement a control method of a water heater system. The display screen of the controller 810 may be a liquid crystal display screen or an electronic ink display screen, and the input device of the controller 810 may be a touch layer covered on the display screen, a key, a trackball or a touch pad arranged on the housing of the controller 810, or an external keyboard, a touch pad or a mouse, etc.
It will be understood by those skilled in the art that the configuration shown in fig. 8 is a block diagram of only a portion of the configuration associated with the present application, and does not constitute a limitation on the controller 810 to which the present application is applied, and that a particular controller 810 may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a controller 810 is provided, the controller 810 storing a computer program, the steps of the above method embodiments being implemented when the controller 810 executes the computer program.
In one embodiment, as shown in fig. 9, a water heater 300 is provided, the water heater 300 including a second water flow sensor 310 and a controller 810;
the second water flow sensor 310 is disposed on the water inlet pipe of the water heater 300, connected to the controller 810, and configured to detect a second target water flow; the second target water flow rate is the water flow rate of the inlet tube of the water heater 300.
In this embodiment, the second water flow sensor 310 is disposed on the water inlet pipe of the water heater 300 to detect the second target water flow, and the steps in the above embodiments of the methods are implemented in combination with the controller 810, so as to avoid the false start phenomenon occurring in the use process of the water heater 300, thereby prolonging the service life of the water heater and saving the gas consumption.
In one embodiment, as shown in FIG. 10, the water heater 300 further includes a solenoid valve 320; the solenoid valve 320 is disposed on the water inlet pipe of the water heater 300 and is used to control whether the water in the cold water pipe 200 flows into the water inlet pipe of the water heater 300.
In this embodiment, the electromagnetic valve 320 is disposed on the water inlet pipe of the water heater 300, so that when the electromagnetic valve is closed, water in the water heater 300 can be stopped, water in the water heater 300 is prevented from flowing back to the cold water pipe 200, and water in the cold water pipe 200 can be stopped from flowing into the water inlet pipe of the water heater 300. Meanwhile, when the electromagnetic valve 320 is opened, water in the cold water pipe 200 flows into the water inlet pipe of the water heater 300, so that a user can use water in the water heater 300 in real time, and convenience of the water heater 300 is improved.
In one embodiment, as shown in fig. 10, the water heater further comprises a water pump 330, a heat exchanger 340, a water inlet pipe 350 and a water outlet pipe 360; wherein, the first end of the water inlet pipe 350 is connected with the water inlet pipe 350 of the water heater 300, the second end of the water inlet pipe 350 is connected with the first end of the heat exchanger 340, the second end of the heat exchanger 340 is connected with the first end of the water outlet pipe 360, and the second end of the water outlet pipe 360 is connected with the water outlet pipe 360 of the water heater 300; the water pump 330 is disposed on the water inlet pipe 350.
In one embodiment, as shown in fig. 1, a water heater system is provided, the water heater system comprising a hot water pipe 100, a cold water pipe 200, a first water flow sensor 400, a connecting pipe 500, and the water heater 300 of the above embodiments; one end of the hot water pipe 100 and one end of the cold water pipe 200 are respectively used for connecting to a water consumption point, the other end of the hot water pipe 100 is connected with the water outlet pipe 360 of the water heater 300, and the other end of the cold water pipe 200 is connected with the water inlet pipe 350 of the water heater 300; the connection pipe 500 is connected between the hot water pipe 100 and the cold water pipe 200 of the farthest water using point; the first water flow sensor 400 is disposed on the connection pipe 500 and connected to the water heater 300. First water flow sensor sets up on the connecting pipe and is connected with the water heater.
In the embodiment, the controller controls the water heater to be in a heating state by acquiring a first target water flow and a second target water flow and when the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is greater than the first target water flow; the time when the user opens the hot water end and needs to obtain hot water in the hot water pipe in the water heater system is accurately identified, and the water heater is controlled to be in a heating state at the corresponding time, so that the phenomenon of false start of the water heater in the using process is avoided, the service life of the water heater is prolonged, and the gas consumption is saved.
In one embodiment, as shown in fig. 11, the water heater system further includes a check valve 600, and the check valve 600 is disposed on the connection pipe 500 for preventing water in the cold water pipe 200 from flowing back toward the hot water pipe 100.
In an embodiment, a computer-readable storage medium is provided, having stored thereon a computer program, which when executed by a processor, carries out the steps of any of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, which may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The control method of the water heater system is characterized in that the water heater system comprises a hot water pipe, a cold water pipe, a connecting pipe, a first water flow sensor and a water heater; one end of the hot water pipe and one end of the cold water pipe are respectively used for being connected to a water consumption point, the other end of the hot water pipe is connected with a water outlet pipe of the water heater, and the other end of the cold water pipe is connected with a water inlet pipe of the water heater; the connecting pipe is connected between the hot water pipe and the cold water pipe at the farthest water using point; the first water flow sensor is arranged on the connecting pipe and connected with the water heater, and the water heater system further comprises a one-way valve which is arranged on the connecting pipe; the control method comprises the following steps:
acquiring a first target water flow and a second target water flow; the first target water flow is the water flow of the hot water pipe flowing into the cold water pipe detected by the first water flow sensor, and the second target water flow is the water flow of the water inlet pipe;
and if the second target water flow is larger than or equal to the starting water flow threshold and the second target water flow is larger than the first target water flow, controlling the water heater to be in a heating state.
2. The control method according to claim 1, wherein the water heater further includes a solenoid valve; the electromagnetic valve is arranged on the water inlet pipe and is used for controlling whether water in the cold water pipe flows into the water inlet pipe or not; the step of obtaining the first target water flow and the second target water flow further comprises:
receiving a starting-up control signal; the starting control signal is used for indicating the water heater to enter a standby state and controlling the electromagnetic valve to be opened so that water in the cold water pipe flows into the water inlet pipe.
3. The control method according to claim 2, characterized by further comprising:
and if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is equal to the first target water flow, controlling the water heater to be in the standby state and controlling the electromagnetic valve to be closed so as to stop water in the cold water pipe from flowing into the water inlet pipe.
4. The control method according to claim 3, characterized in that the step of controlling the solenoid valve to close further comprises, after:
updating the first target water flow rate;
if the first target water flow is smaller than or equal to the target minimum water flow, controlling the electromagnetic valve to be opened, and returning to the step of obtaining the first target water flow and the second target water flow; the target minimum water flow rate is a minimum value of a water flow rate of the hot water pipe flowing into the cold water pipe.
5. The control method according to claim 3, characterized by further comprising:
if the second target water flow is greater than or equal to the starting water flow threshold and the second target water flow is less than the first target water flow, returning to the step of obtaining the first target water flow and the second target water flow after a preset waiting time.
6. The control method of claim 4, wherein the step of updating the first target water flow rate is further followed by:
if the first target water flow is greater than the target minimum water flow, keeping the solenoid valve closed.
7. The control method according to claim 4, wherein the controlling the solenoid valve to open and return to the step of obtaining the first target water flow rate and the second target water flow rate includes:
and controlling the electromagnetic valve to be opened, and returning to the step of acquiring the first target water flow and the second target water flow when the opening time of the electromagnetic valve is greater than or equal to preset time.
8. The control method according to claim 1, characterized by further comprising:
and if the second target water flow is smaller than the starting water flow threshold, controlling the water heater to be in a standby state.
9. A water heater comprising a second water flow sensor and a controller;
the second water flow sensor is arranged on a water inlet pipe of the water heater, is connected with the controller and is used for detecting a second target water flow;
the controller stores a computer program which when executed implements the steps of the method of any one of claims 1 to 8.
10. A water heater system, comprising a hot water pipe, a cold water pipe, a connecting pipe, a first water flow sensor, and the water heater of claim 9; one end of the hot water pipe and one end of the cold water pipe are respectively used for being connected to a water consumption point, the other end of the hot water pipe is connected with a water outlet pipe of the water heater, and the other end of the cold water pipe is connected with a water inlet pipe of the water heater; the connecting pipe is connected between the hot water pipe and the cold water pipe at the farthest water using point; the first water flow sensor is arranged on the connecting pipe and connected with the water heater.
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| CN109084485A (en) * | 2018-09-03 | 2018-12-25 | 新界泵业集团股份有限公司 | The instant-heating circulatory system and its control method suitable for water heater |
| CN112097401A (en) * | 2020-10-21 | 2020-12-18 | 佛山市九零物联科技有限公司 | Water heater control system with zero water pressure function and working method |
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| JP2012057923A (en) * | 2010-09-08 | 2012-03-22 | Shoji Ueda | Hot water supply system |
| CN106369807B (en) * | 2016-10-20 | 2019-07-16 | 广东万和新电气股份有限公司 | Zero cold water gas heater of one kind and its system |
| CN110736259B (en) * | 2019-09-20 | 2021-07-20 | 华帝股份有限公司 | Zero-cold-water hot water supply system and control method thereof |
| CN111981694B (en) * | 2020-07-21 | 2023-07-25 | 华帝股份有限公司 | Control method and system for gas water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084485A (en) * | 2018-09-03 | 2018-12-25 | 新界泵业集团股份有限公司 | The instant-heating circulatory system and its control method suitable for water heater |
| CN112097401A (en) * | 2020-10-21 | 2020-12-18 | 佛山市九零物联科技有限公司 | Water heater control system with zero water pressure function and working method |
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