Control method of gas water heater system and gas water heater system

Abstract

The invention relates to the technical field of water heaters, and discloses a control method of a gas water heater system and the gas water heater system.The gas water heater system comprises a gas water heater and a bath controller, the gas water heater is in communication connection with the bath controller, the bath controller is located nearby a water using point, and a water electromagnetic valve is arranged on a water outlet pipeline of the water using point; the bath controller is in communication connection with the water electromagnetic valve; the method comprises the steps that the gas water heater responds to a water using request of the bath controller, and combustion heating of the gas water heater is controlled; after the combustor of the gas water heater combusts and heats, the bath controller delays the first time to open the water electromagnetic valve. In the first time, the gas water heater heats the heat exchanger, the water temperature in the heat exchanger is increased, a user can use hot water with the proper water temperature quickly, then the user experience is remarkably improved, meanwhile, discharge of cold water is effectively reduced, and energy is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water heaters, in particular to a control method of a gas water heater system and the gas water heater system. BACKGROUND

[0002] In the use process of the gas water heater, gas enters the burner for combustion, and high-temperature flue gas exchanges heat with water in the heat exchanger. During this period, the cold water newly flowed from the water inlet pipe is not heated by the heat exchanger before flowing out, or is not heated sufficiently, so that the outlet water temperature is obviously lower than the set temperature, affecting the user experience. SUMMARY

[0003] Therefore, the present application provides a control method of a gas water heater system and the gas water heater system to improve the user experience of the water heater.

[0004] In a first aspect, the present application provides a control method of a gas water heater system, the gas water heater system comprising a gas water heater and a bath controller, the gas water heater being in communication connection with the bath controller, the bath controller being located near a water use point, a water outlet pipeline of the water use point being provided with a water electromagnetic valve, and the bath controller being in communication connection with the water electromagnetic valve; the method comprising:

[0005] The gas water heater controls the gas water heater to combust and heat in response to a water use request of the bath controller.

[0006] After the burner of the gas water heater combusts and heats, the bath controller opens the water electromagnetic valve after a first time delay.

[0007] The control method of the gas water heater system provided by the present application is applied to a gas water heater system in which a water outlet pipeline of a water use point is provided with a water electromagnetic valve, and a bath controller is in communication connection with the water electromagnetic valve. The water electromagnetic valve is simple in setting mode and is not limited by factors such as pipeline and cost. In the use process of the gas water heater, the gas water heater controls the gas water heater to combust and heat in response to a water use request of the bath controller, and then the bath controller opens the water electromagnetic valve after a first time delay. In the first time, the gas water heater heats the heat exchanger, so that the water temperature in the heat exchanger is raised, the user can use hot water with appropriate water temperature faster, thereby significantly improving the user experience, and effectively reducing the discharge of cold water and saving energy.

[0008] In some optional embodiments, before the water electromagnetic valve is opened after the first time delay, the method further comprises:

[0009] obtaining a set temperature and an inlet water temperature of the gas water heater;

[0010] determining a predicted time required for the water in the heat exchanger of the gas water heater to heat from the inlet water temperature to the set temperature based on a first difference value of the set temperature and the inlet water temperature, and taking the predicted time as the first time.

[0011] In some optional embodiments, the method for controlling the burner combustion heating of the gas water heater comprises:

[0012] determining a target output load of the gas water heater based on a first difference value of the set temperature and the inlet water temperature, the target output load being positively correlated with the first difference value;

[0013] controlling the gas water heater to perform the burner combustion heating with the target output load.

[0014] In some optional embodiments, the first time is calculated by using the following formula:

[0015]

[0016] wherein ΔT represents the first time;

[0017] β represents a thermal efficiency coefficient;

[0018] C represents the specific heat capacity of water;

[0019] L represents the length of the water pipe in the heat exchanger of the water heater;

[0020] d represents the inner diameter of the water pipe in the heat exchanger of the water heater;

[0021] ρ represents the density of water;

[0022] t2 represents the set temperature;

[0023] t1 represents the inlet water temperature;

[0024] represents the target output load of the water heater.

[0025] In some optional embodiments, the first time is a preset fixed time; and the method for controlling the burner combustion heating of the gas water heater comprises:

[0026] obtaining the inlet water temperature, the set temperature and the first time;

[0027] determining a target output load required for the water in the heat exchanger of the gas water heater to be heated from the inlet water temperature to the set temperature in the first time based on a first difference value of the inlet water temperature and the set temperature;

[0028] controlling the gas water heater to perform the burner combustion heating with the target output load.

[0029] In some optional embodiments, the method for determining the delayed heat load of the water heater based on the pre-heating energy and the first time comprises:

[0030] the delayed heat load is determined by using the following formula:

[0031]

[0032] wherein, represents a target output load;

[0033] β represents a thermal efficiency coefficient;

[0034] C represents the specific heat capacity of water;

[0035] L represents the length of the water pipe in the heat exchanger of the water heater;

[0036] d represents the inner diameter of the water pipe in the heat exchanger of the water heater;

[0037] ρ represents the density of water;

[0038] t2 represents the set temperature;

[0039] t1 represents the water inlet temperature;

[0040] ΔT represents the first time.

[0041] In some optional embodiments, after controlling the gas water heater to combust and heat, the method further comprises:

[0042] after the time of the gas water heater combustion heating reaches a second time, if the water flow signal of the gas water heater is not detected, controlling the gas water heater to extinguish the flame to stop heating, and controlling the water electromagnetic valve to close;

[0043] wherein, the second time is greater than the first time.

[0044] In some optional embodiments, before opening the water electromagnetic valve for the first time, the method further comprises:

[0045] acquiring a third time from the last time the gas water heater ended combustion;

[0046] if the third time exceeds a preset time, opening the water electromagnetic valve for the first time; or,

[0047] acquiring the heat exchange water temperature of the gas water heater;

[0048] if the heat exchange water temperature is less than a preset water temperature, opening the water electromagnetic valve for the first time.

[0049] In some optional embodiments, the method further comprises:

[0050] the gas water heater controls the gas water heater to stop combustion heating in response to the water-off request of the bath controller;

[0051] after the burner of the gas water heater stops combustion heating, the bath controller closes the water electromagnetic valve for a fourth time.

[0052] In a second aspect, the present application provides a gas water heater system, comprising: the gas water heater system comprises a gas water heater and a bath controller, the gas water heater is in communication connection with the bath controller, the bath controller is located near a water using point, a water outlet pipeline of the water using point is provided with a water electromagnetic valve, and the bath controller is in communication connection with the water electromagnetic valve; the gas water heater system executes the control method of the gas water heater system in the first aspect or any of the corresponding embodiments thereof. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0054] Figure 1 A schematic diagram of a bath controller of a gas water heater system is shown;

[0055] Figure 2 A schematic diagram of screen display information of the bath controller in some optional embodiments is shown;

[0056] Figure 3 A flowchart of a control method of a gas water heater system according to an embodiment of the present application is shown;

[0057] Figure 4 A flowchart of another control method of a gas water heater system according to an embodiment of the present application is shown;

[0058] Figure 5 A flowchart of still another control method of a gas water heater system according to an embodiment of the present application is shown;

[0059] Figure 6 A flowchart of yet another control method of a gas water heater system according to an embodiment of the present application is shown;

[0060] Figure 7 A structural schematic diagram of a controller provided in an optional embodiment of the present application is shown. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0062] This invention provides a control method and system for a gas water heater, addressing the problem of insufficient hot water flow during the initial startup phase of a gas water heater. By installing a water solenoid valve on the outlet pipe at the point of use, the valve opens after a delay following combustion and heating by the gas water heater. This allows newly flowing cold water from the inlet pipe to be fully heated by the heat exchanger before flowing out, resulting in an outlet water temperature close to the set temperature and effectively improving the user experience.

[0063] To better describe the control method of the gas water heater according to the embodiments of the present invention, the application scenario of the present invention will be briefly described first. The embodiments of the present invention can be applied to a gas water heater system, which may include a gas water heater and a bathroom controller. The gas water heater and the bathroom controller are communicatively connected. The bathroom controller is located near the point of use, and the water outlet pipe of the point of use is equipped with a water solenoid valve. The bathroom controller and the water solenoid valve are communicatively connected. Figure 1 A schematic diagram illustrating the structure and working principle of the bathroom controller for a gas water heater system is shown, such as... Figure 1 As shown, the water heater controller is equipped with a temperature sensor (not shown) and a communication module (not shown). The controller is installed in the water circuit of the water heater, before the outlet device. Based on the temperature collected by the temperature sensor in the controller, the first display area 106 can display the real-time water temperature flowing through the controller, and the second display area 105 can display the preset outlet temperature in real-time. The preset outlet temperature is the same as the temperature set by the user using the temperature decrease button 103 and temperature increase button 104 on the controller. The water heater can also be turned on or off using the power button 102 on the controller's display. The communication module is used to establish communication with the gas water heater. The water-using device 101 connected to the controller can send water usage requests or water shut-off requests to the controller.

[0064] In some alternative implementations, the gas water heater's control panel may display only the preset outlet water temperature, without displaying the water temperature flowing through the control panel. Figure 2 The diagram illustrates the display information of the bathroom controller in some optional implementations, such as... Figure 2 As shown, only the display area of ​​the shower controller shows the preset water temperature.

[0065] According to an embodiment of the present invention, a control method for a gas water heater is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0066] This embodiment provides a control method for a gas water heater, which can be used in the aforementioned gas water heater system, etc. Figure 3is a flow chart of a control method of a gas water heater according to an embodiment of the present application, as shown in the figure, the flow comprises the following steps: Figure 3

[0067] Step S301, the gas water heater controls the gas water heater to burn and heat in response to the water use request of the bath controller.

[0068] Specifically, when the user needs to use water or turn off the water, the user can click the corresponding key on the panel of the bath controller. At this time, the bath controller can send a water use request or a water turn-off request to the gas water heater based on the detected key instruction of the user's water use or water turn-off, and send the water use request or the water turn-off request to the gas water heater through the communication connection with the gas water heater. The gas water heater can receive the water use request or the water turn-off request. In actual application, other ways such as voice instruction can also be used. The present application mainly relates to the water use request, so the water use request is mainly described below.

[0069] The gas water heater controls the gas water heater to burn and heat in response to the water use request of the bath controller, so as to quickly respond to the water use request at the water end.

[0070] Step S302, the bath controller opens the water electromagnetic valve after the burner of the gas water heater burns and heats for a first time.

[0071] The purpose of opening the water electromagnetic valve by the bath controller after the burner of the gas water heater burns and heats for a first time is to preheat the water in the heat exchanger of the water heater within the first time. The quality of the water stored in the water heater is determined, so the energy required to heat the water is also determined. Therefore, the first time of the delay can be a fixed time set in advance. The first time can also be determined in real time according to the target output load required to heat the water stored in the water heater.

[0072] The gas water heater system provided by the embodiment of the present application is applied to a gas water heater system in which the water outlet pipeline of the water use point is provided with a water electromagnetic valve, and the bath controller is in communication connection with the water electromagnetic valve. The water electromagnetic valve is simple in setting mode and is not limited by factors such as pipeline and cost. In the use process of the gas water heater, the gas water heater controls the gas water heater to burn and heat in response to the water use request of the bath controller, and then the bath controller opens the water electromagnetic valve after a first time. Within the first time, the gas water heater heats the heat exchanger, raises the water temperature in the heat exchanger, and enables the user to quickly use hot water with appropriate water temperature, thereby significantly improving the user experience and effectively reducing the discharge of cold water and saving energy.

[0073] It can be understood that the present application realizes the opening or closing of the water route by controlling the water electromagnetic valve. In the embodiment, the water electromagnetic valve does not participate in the water volume adjustment of the water route, and the user can adjust the water volume through another valve.

[0074] ​The application provides a control method of a gas water heater, which can be applied to the gas water heater system and the like, Figure 4 is a flow chart of the control method of the gas water heater according to the embodiment of the application, as shown in the figure, the flow comprises the following steps: Figure 4

[0075] In step S401, the gas water heater acquires a set temperature and an inlet water temperature of the gas water heater in response to a water use request of the bath controller.

[0076] Specifically, the set temperature of the gas water heater can be the set temperature carried by the water use request of the bath controller. The outlet water temperature can be acquired by a temperature sensor arranged at the outlet of the gas water heater, and the outlet water temperature can also be acquired by a temperature sensor arranged at the water use point.

[0077] In step S402, the gas water heater is controlled to combust and heat.

[0078] Specifically, step S402 can comprise:

[0079] In step S4021, a target output load of the gas water heater is determined based on a first difference value of the set temperature and the inlet water temperature, and the target output load is positively correlated with the first difference value.

[0080] Specifically, a plurality of output load corresponding gas proportional valve gears can be preconfigured in the gas water heater, when the water use request is received, the first difference value of the set temperature carried by the water use request and the real-time acquired inlet water temperature is used to determine the corresponding gas proportional valve gear according to the first difference value and the water flow, and the required energy is obtained according to the first difference value and the water flow. The water flow can be pre-set or the water flow when the user uses water last time, which is recorded and saved in the memory of the water heater. In addition, the gear and the plurality of temperature differences can be directly configured to determine the corresponding gas proportional valve gear according to the first difference value.

[0081] In step S4022, the gas water heater is controlled to combust and heat with the target output load.

[0082] Specifically, the gas water heater can be controlled to combust and heat based on the target output load corresponding to the gas proportional valve gear determined in step S4021. In actual application, other suitable control methods can also be used to control the gas water heater to combust and heat.

[0083] In step S403, a predicted time required for the water in the heat exchanger of the gas water heater to heat from the inlet water temperature to the set temperature is determined based on the first difference value of the set temperature and the inlet water temperature, and the predicted time is taken as a first time.

[0084] Specifically, the first time can be calculated by using the following formula: ​

[0085]

[0086] wherein, ΔT represents the first time;

[0087] β represents a thermal efficiency coefficient, wherein 0.1 < β ≤ 0.8;

[0088] C represents the specific heat capacity of water, which can be 4.19 × 10 -3 MJ / (kg·K);

[0089] L represents the length of the water pipe in the heat exchanger of the water heater, which is a fixed parameter of the heat exchanger, and the unit is m;

[0090] d represents the inner diameter of the water pipe in the heat exchanger of the water heater, which is a fixed parameter of the heat exchanger, and the unit is m;

[0091] ρ represents the density of water, which is a constant, and the unit is kg / m 3 ;

[0092] t2 represents the set temperature, which can be K, and the set temperature can be a parameter received from the screen display of the bath controller or the controller of the gas water heater, for example, the user sets the water temperature to 40°, and t2 is 40°, and unit conversion can be performed during calculation;

[0093] t1 represents the inlet water temperature, which is K, and the inlet water temperature can be obtained by a temperature sensor;

[0094] Here, the collection point of the inlet water temperature can be set according to the actual situation, for example, the collection point of the inlet water temperature can be set between the water heater and the water use point, or at the inlet end of the heat exchanger;

[0095] t2-t1 represents the first difference between the set temperature and the inlet water temperature;

[0096] represents the target output load of the water heater, and the unit is kW. In this embodiment, the target output load is a constant value, which can be pre-set for easy calculation; in other embodiments, the target output load can also be a variable value.

[0097] Here, wherein, Φ is the rated heat load of the water heater, i.e. the maximum heat load.

[0098] It can be understood that in the first time, the water heater runs at the target output load, and after running for the first time, the water heater calculates the corresponding heat load according to the water flow and the set temperature of the user, and performs constant temperature control.

[0099] Step S404, after the burner of the gas water heater is heated, the bath controller delays the first time to open the water electromagnetic valve.

[0100] The step S302 is described above and will not be repeated here.

[0101] In the embodiment, a control method of a gas water heater is provided, which can be applied to the gas water heater system and the like described above, Figure 5 is a flow chart of the control method of the gas water heater according to the embodiment of the present application, as shown in the figure, the flow includes the following steps: Figure 5

[0102] In step S501, the gas water heater controls the gas water heater to burn and heat in response to the water use request of the bath controller.

[0103] In this embodiment, the first time is a preset fixed time. The step S501 can include:

[0104] In step S5011, the inlet water temperature, the set temperature and the first time are obtained.

[0105] The inlet water temperature can be obtained by a temperature sensor, and the first time is a fixed parameter which can be pre-configured in the gas water heater controller or the bath controller of the gas water heater system.

[0106] In step S5012, based on the first difference value between the inlet water temperature and the set temperature, the target output load required for heating the water in the heat exchanger of the gas water heater from the inlet water temperature to the set temperature in the first time is determined.

[0107] Specifically, the target output load can be determined by the following formula:

[0108]

[0109] wherein, the target output load is represented by kW;

[0110] β represents a fixed coefficient, wherein 0.1 < β ≤ 0.8;

[0111] C represents the specific heat capacity of water, which can be taken as 4.19 × 10 -3 MJ / (kg·K);

[0112] L represents the length of the water pipe in the heat exchanger of the water heater, which is a fixed parameter of the heat exchanger, and the unit is m;

[0113] d represents the inner diameter of the water pipe in the heat exchanger of the water heater, which is a fixed parameter of the heat exchanger, and the unit is m;

[0114] ρ represents the density of water, which is a constant, and the unit is kg / m 3 ;

[0115] ​t2 represents a set temperature, unit K, and the outlet water temperature can be a parameter received from the screen display of the bath controller or the controller; for example, the user sets the water temperature to 40°, and t2 is 40°;

[0116] t1 represents the inlet water temperature, unit K, which can be obtained by the temperature sensor at the inlet water end;

[0117] t1-t2 represents the first difference, unit K;

[0118] ΔT represents the first time.

[0119] Step S5013, control the gas water heater to burn and heat at the target output load.

[0120] Specifically, the load of the gas water heater can be adjusted to the target output load based on the target output load determined in steps S5011 and S5012. And within the first time, the gas water heater runs at the target output load, and after running for the first time, the water heater calculates the corresponding heat load according to the water flow and the user's preset outlet water temperature, and performs constant temperature control.

[0121] Step S502, after the burner of the gas water heater burns and heats, the bath controller opens the water electromagnetic valve for the first time.

[0122] For details, please refer to step S302 described above, which will not be repeated here.

[0123] Step S503, the gas water heater stops burning and heating in response to the water-off request of the bath controller.

[0124] Specifically, after the gas water heater receives the water-off request of the bath controller, the gas water heater is controlled to stop burning and heating in time, which effectively avoids the heat exchanger receiving more heat, thereby avoiding the water temperature in the heat exchanger continuously rising to a certain extent.

[0125] Step S504, after the burner of the gas water heater stops burning and heating, the bath controller closes the water electromagnetic valve for the fourth time.

[0126] Specifically, after the gas water heater stops heating, the heat exchanger still has some heat, and the water in the heat exchanger is continuously heated, which is prone to problems such as temperature rise during water stop. Here, in response to the water-off request of the bath controller, after the burner of the gas water heater stops burning and heating, the bath controller closes the water electromagnetic valve for the fourth time.

[0127] Here, the fourth time can be set according to actual needs, which is not limited in the present application.

[0128] A control method of a gas water heater is provided in the embodiment, which can be applied to the gas water heater system and the like, Figure 6 is a flow chart of the control method of the gas water heater according to the embodiment of the present application, as shown in the figure, the flow comprises the following steps: Figure 6

[0129] Step S601, the gas water heater controls the gas water heater to combust and heat in response to the water request of the bath controller.

[0130] For details, please refer to the above step S301, which will not be repeated here.

[0131] Step S6021, the third time from the last time the gas water heater ends combustion is obtained.

[0132] Step S6022, the heat exchange water temperature of the gas water heater is obtained.

[0133] It should be noted that the above step S6021 and step S6022 only need to configure one of them according to actual needs in actual application. If step S6021 is configured to be executed here, step S6031 is executed when the third time exceeds the preset time. If step S6022 is configured to be executed here, step S6032 is executed when the heat exchange water temperature is less than the preset water temperature.

[0134] Step S6031, if the third time exceeds the preset time after the combustor of the gas water heater combusts and heats, the water electromagnetic valve is opened after the first time.

[0135] Here, the third time can be counted from receiving the water request. The preset time can be set according to actual needs.

[0136] Step S6032, if the heat exchange water temperature is less than the preset water temperature after the combustor of the gas water heater combusts and heats, the bath controller opens the water electromagnetic valve after the first time.

[0137] Here, the preset water temperature can be set according to actual needs.

[0138] ​Therefore, if the time when the water request is received this time is far from the water-off time of the previous water use process of the water heater, or the heat exchange water temperature in the heat exchange pipe of the gas water heater is low, it indicates that the gas water heater has water stop temperature drop. Based on the judgment process of step S6021 or step S6022, the operation of step S6031 or step S6032 is performed to fully analyze whether the water stop temperature drop occurs, and when the water stop temperature drop occurs, the water solenoid valve is opened after a delay of the first time, so that the gas water heater heats the heat exchanger to make the heat exchange water temperature in the heat exchanger close to the user's setting temperature. If the time when the water request is received this time is greater than the set time from the water-off time of the previous water use process of the water heater, or the heat exchange water temperature in the heat exchange pipe of the gas water heater is low, the bath controller needs to delay the opening of the water solenoid valve by the first time, so that the user can quickly use hot water with appropriate water temperature, thereby significantly improving the user experience, and improving the problem of resource waste caused by cold water discharge.

[0139] Step S604, after the time of the combustion heating of the gas water heater reaches the second time, if the water flow signal of the gas water heater is not detected, the gas water heater is controlled to be extinguished to stop heating, and the water solenoid valve is controlled to be closed, wherein the second time is greater than the first time.

[0140] Specifically, if the time of the combustion heating of the burner of the gas water heater reaches the second time, and the water flow signal of the gas water heater is still not detected, there may be a problem of waterway blockage, etc. In order to avoid the problem of dry burning of the gas water heater, etc., here, the burner of the gas water heater can be controlled to be extinguished by closing the electromagnetic valve or proportional valve of the gas water heater, etc. to stop heating, to ensure safety, and to significantly improve the use safety of the gas water heater.

[0141] The control method of the above-mentioned gas water heater can be configured in the form of multiple functional modules in the gas water heater system. The further function description of each module and unit is the same as that of the above-mentioned corresponding embodiment, which will not be repeated here.

[0142] The water heater control device in the embodiment is presented in the form of a functional unit. The unit here refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and a memory executing one or more software or fixed programs, and / or other devices that can provide the above-mentioned functions.

[0143] The embodiment of the present application also provides a controller, which can be a controller of a gas water heater or a controller of a bath controller of a gas water heater system. The controller of the gas water heater or the controller of the bath controller cooperates to execute the control method of the gas water heater provided in the above-mentioned embodiment.

[0144] Please refer toFigure 7 , Figure 7 Figure 1 is a schematic diagram of a controller according to an example embodiment of the application. The controller comprises one or more processors 10, memory 20, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components communicate via one or more buses and can be mounted on a common motherboard or in other manners as appropriate. The processor(s) can process instructions for execution within the controller, including instructions stored in the memory or elsewhere to implement routines that control the GUI presented on external input / output devices, such as a display device coupled to the interface. In some optional embodiments, multiple processors and / or multiple buses can be employed as appropriate, as will be apparent to those of ordinary skill in the art. Also, various elements of the controller, as well as the input / output devices themselves, can be implemented with various other hardware, software, and / or firmware components, as is well known in the art. Figure 7 Figure 1 is a schematic diagram of a controller according to an example embodiment of the application. The controller comprises one or more processors 10, memory 20, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components communicate via one or more buses and can be mounted on a common motherboard or in other manners as appropriate. The processor(s) can process instructions for execution within the controller, including instructions stored in the memory or elsewhere to implement routines that control the GUI presented on external input / output devices, such as a display device coupled to the interface. In some optional embodiments, multiple processors and / or multiple buses can be employed as appropriate, as will be apparent to those of ordinary skill in the art. Also, various elements of the controller, as well as the input / output devices themselves, can be implemented with various other hardware, software, and / or firmware components, as is well known in the art. Figure 7 Figure 1 is a schematic diagram of a controller according to an example embodiment of the application. The controller comprises one or more processors 10, memory 20, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components communicate via one or more buses and can be mounted on a common motherboard or in other manners as appropriate. The processor(s) can process instructions for execution within the controller, including instructions stored in the memory or elsewhere to implement routines that control the GUI presented on external input / output devices, such as a display device coupled to the interface. In some optional embodiments, multiple processors and / or multiple buses can be employed as appropriate, as will be apparent to those of ordinary skill in the art. Also, various elements of the controller, as well as the input / output devices themselves, can be implemented with various other hardware, software, and / or firmware components, as is well known in the art.

[0145] The processor 10 can be a central processing unit, a network processor, or a combination thereof. The processor 10 can further include a hardware chip. The hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic device, a general array logic, or any combination thereof.

[0146] The memory 20 stores instructions that are executable by the at least one processor 10, to cause the at least one processor 10 to perform the methods illustrated in the above embodiments.

[0147] The memory 20 can include a program storage area and a data storage area. The program storage area can store an operating system, application programs required by at least one function, and the like. The data storage area can store data created according to the use of the controller, and the like. In addition, the memory 20 can include a high-speed random access memory, and can further include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some optional embodiments, the memory 20 can optionally include a memory that is remotely located with respect to the processor 10, and these remote memories can be connected to the controller through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0148] The memory 20 can include a volatile memory, such as a random access memory, and can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid state disk. The memory 20 can further include a combination of the above-mentioned types of memories.

[0149] The controller also comprises a communication interface 30 for the controller to communicate with other devices or communication networks.

[0150] The embodiment of the present application also provides a water heater, comprising a burner, a water path and the controller of the above embodiment. Other specific implementation details of the water heater can be found in the above embodiment, which will not be described here.

[0151] The embodiment of the present application also provides a computer readable storage medium, and the method according to the embodiment of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or stored in a remote storage medium or a non-transient machine readable storage medium and stored in a local storage medium through network downloading of computer code, so that the method described herein can be stored in such software processing of a storage medium using a general-purpose computer, a special-purpose processor or programmable or special-purpose hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk or a solid-state disk, etc. Further, the storage medium can also include a combination of the above types of memories. It can be understood that the computer, the processor, the microprocessor controller or the programmable hardware include storage components that can store or receive software or computer code, when the software or computer code is accessed and executed by the computer, the processor or the hardware, the method shown in the above embodiment is implemented.

[0152] Part of the present application can be applied as a computer program product, for example, computer program instructions, when executed by a computer, through the operation of the computer, the method and / or technical solutions according to the present application can be called or provided. Those skilled in the art should understand that the form of computer program instructions in a computer readable medium includes but is not limited to source files, executable files, installation package files, etc. Correspondingly, the way of computer program instructions executed by a computer includes but is not limited to: the computer directly executes the instructions, or the computer compiles the instructions and then executes the corresponding compiled program, or the computer reads and executes the instructions, or the computer reads and installs the instructions and then executes the corresponding installed program. Here, the computer readable medium can be any available computer readable storage medium or communication medium accessible to the computer. Although the embodiments of the present application are described in conjunction with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended technical solutions.

Claims

1. A control method for a gas water heater system, the gas water heater system comprising a gas water heater and a bathroom controller, the gas water heater being communicatively connected to the bathroom controller, the bathroom controller being located near the point of use, characterized in that, The water outlet pipe at the water point is equipped with a water solenoid valve, and the bath controller is communicatively connected to the water solenoid valve; the method includes: The gas water heater responds to the water usage request from the bathroom controller by controlling the gas water heater to burn and heat; After the burner of the gas water heater has started to ignite and heat the water, the water controller opens the water solenoid valve immediately after a delay.

2. The method according to claim 1, characterized in that, Before the water solenoid valve is opened after the delay, the method further includes: Obtain the set temperature and inlet water temperature of the gas water heater; Based on the first difference between the set temperature and the inlet water temperature, the predicted time required for the water in the heat exchanger of the gas water heater to heat from the inlet water temperature to the set temperature is determined, and the predicted time is used as the first time.

3. The method according to claim 2, characterized in that, The control of the burner of the gas water heater for combustion and heating includes: Based on the first difference between the set temperature and the inlet water temperature, the target output load of the gas water heater is determined, and the target output load is positively correlated with the first difference. The gas water heater is controlled to perform combustion heating using the target output load.

4. The method according to claim 2, characterized in that, The first time is calculated using the following formula: Wherein, ΔT represents the first time; β represents a thermal efficiency coefficient; C represents the specific heat capacity of water; L represents the length of the water pipe in the heat exchanger of the water heater; d represents the inner diameter of the water pipe in the heat exchanger of the water heater; ρ represents the density of the water; t2 represents the set temperature; t1 represents the inlet water temperature; This indicates the target output load of the water heater.

5. The method according to claim 1, characterized in that, The first time is a preset fixed time; controlling the combustion and heating of the gas water heater includes: Obtain the inlet water temperature, set the temperature, and the first time; Based on the first difference between the inlet water temperature and the set temperature, the target output load required for the water in the heat exchanger of the gas water heater to be heated from the inlet water temperature to the set temperature from the first time is determined. The gas water heater is controlled to perform combustion heating using a target output load.

6. The method according to claim 5, characterized in that, The determination of the target output load required for the water in the heat exchanger of the gas water heater to be heated from the inlet water temperature to the set temperature from the inlet water temperature for a first time, based on the first difference between the inlet water temperature and the set temperature, includes: The target output load is determined using the following formula: in, This indicates the target output load; β represents a thermal efficiency coefficient; C represents the specific heat capacity of water; L represents the length of the water pipe in the heat exchanger of the water heater; d represents the inner diameter of the water pipe in the heat exchanger of the water heater; ρ represents the density of the water; t2 represents the set temperature; t1 represents the inlet water temperature; ΔT represents the first time.

7. The method according to claim 1, characterized in that, After controlling the combustion and heating of the gas water heater, the method further includes: If no water flow signal is detected after the gas water heater has been burning and heating for a second time, the gas water heater is controlled to shut off to stop heating, and the water solenoid valve is controlled to close. The second time is longer than the first time.

8. The method according to claim 1, characterized in that, Before the water solenoid valve is opened after the delay, the method further includes: Obtain the third time since the last combustion ended in the gas water heater; If the third time exceeds the preset time, the water solenoid valve will open after a delay of the first time; or, To obtain the hot water temperature of a gas water heater; If the temperature of the hot water exchanged is lower than the preset water temperature, the water solenoid valve will be opened immediately after a delay.

9. The method according to claim 1, characterized in that, The method further includes: The gas water heater responds to the water shut-off request from the bathroom controller by controlling the gas water heater to stop combustion and heating; After the burner of the gas water heater stops burning and heating, the bath controller closes the water solenoid valve after a fourth delay.

10. A gas-fired water heater system, comprising: The gas water heater system includes a gas water heater and a bathroom controller, the gas water heater and the bathroom controller are communicatively connected, the bathroom controller is located near the water point, characterized in that the water outlet pipe of the water point is equipped with a water solenoid valve, and the bathroom controller is communicatively connected to the water solenoid valve; the gas water heater system executes the control method of the gas water heater system according to any one of claims 1 to 9.

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