Internal circulation preheating method, device and equipment based on electric heating and storage medium

Abstract

The invention belongs to the technical field of intelligent household appliances, and particularly relates to an internal circulation preheating method and device based on electric heating, equipment and a storage medium. And according to the first information of the electric heating tank and the second information of the internal circulation pipeline, when it is determined that the gas water heater meets the electric heating tank condition of the electric heating tank, the electric heating tank is controlled to operate the heating function. According to the method, the state of the electric heating tank and the state of the internal circulation pipeline are monitored and judged in real time, it is guaranteed that a user can enjoy stable temperature supply when using hot water, noise generated when the gas water heater works is successfully reduced, internal circulation preheating is achieved, and the comfort degree and the satisfaction degree of the user are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of smart home appliances, and specifically relates to an internal circulation preheating method, device, equipment and storage medium based on electric heating. Background Art

[0002] With the rapid development of Internet technology and the significant improvement in people's living standards, more and more families are pursuing smart lifestyles. As an important component of smart homes, gas water heaters have attracted much attention due to their high efficiency, energy saving, and convenience.

[0003] However, existing gas water heaters still face several challenges. First, the slow rate of hot water delivery impacts the user experience. The existing solution involves adding a circulating water pump inside the water heater to preheat the water before the user consumes it. However, this approach requires the user to wait for a while before hot water appears, and the preheating process also increases energy consumption. Furthermore, gas water heaters generate considerable noise during preheating, impacting the user experience.

[0004] Therefore, how to reduce the noise generated by the gas water heater during operation while also achieving internal circulation preheating is a problem that needs to be solved at present. Summary of the Invention

[0005] The present application provides an internal circulation preheating method, device, equipment and storage medium based on electric heating, which are used to achieve internal circulation preheating while reducing the noise generated when the gas water heater is in operation.

[0006] In a first aspect, the present application provides an internal circulation preheating method based on electric heating, comprising:

[0007] Acquiring first information of the electric heating tank and second information of the internal circulation pipeline in real time;

[0008] determining, based on the first information and the second information, whether the gas water heater meets the electric heating conditions of the electric heating tank;

[0009] When it is determined that the gas water heater meets the electric heating condition of the electric heating tank, the electric heating tank is controlled to run a heating function to preheat the water in the inner circulation pipeline.

[0010] Optionally, the first information includes: a first after-tank temperature of the electric heating tank, and the second information includes: a first water flow rate of the internal circulation pipeline. Determining whether the gas water heater meets the electric heating condition of the electric heating tank based on the first information and the second information includes:

[0011] determining whether the first water flow rate reaches a first preset water flow rate and whether the first tank rear temperature is less than or equal to a preheating temperature;

[0012] When the first water flow rate reaches the first preset water flow rate and the first post-tank temperature is less than or equal to the preheating temperature, it is determined that the gas water heater meets the electric heating condition of the electric heating tank.

[0013] Optionally, the first information includes: a second tank temperature, and the second information includes: a second water flow rate. Before determining whether the first water flow rate reaches a first preset water flow rate and whether the first tank temperature is less than or equal to a preheating temperature, the method further includes:

[0014] Acquire the last water use information of the gas water heater, wherein the last water use information includes: the end time of the last water use and the last water use duration;

[0015] When the end time of the previous water use and the current time meet a preset condition, determining whether the duration of the previous water use reaches a first preset duration;

[0016] If so, determining whether the second water flow rate is less than a second preset water flow rate and whether the second after-tank temperature is less than or equal to the preheating temperature, wherein the second water flow rate is the water flow rate in the internal circulation pipeline when the water pump is not turned on, the first water flow rate is the water flow rate in the internal circulation pipeline when the water pump is turned on, and the second water flow rate is less than the first water flow rate;

[0017] When the second water flow rate is less than the second preset water flow rate and the second tank temperature is less than or equal to the preheating temperature, determining that the gas water heater meets the water pump start-up condition of the internal circulation pipeline;

[0018] The determining whether the first water flow rate reaches a first preset water flow rate and whether the first post-tank temperature is less than or equal to a preheating temperature includes:

[0019] When it is determined that the gas water heater meets the water pump start-up condition of the internal circulation pipeline, it is determined whether the first water flow rate reaches a first preset water flow rate and whether the first tank rear temperature is less than or equal to the preheating temperature.

[0020] Optionally, the method further includes:

[0021] Acquire third information of the electric heating tank and fourth information of the internal circulation pipeline in real time, wherein the third information and the fourth information are acquired when the electric heating tank operates a heating function;

[0022] determining, based on the third information and the fourth information, whether the gas water heater satisfies a heating stop condition of the electric heating tank;

[0023] When it is determined that the gas water heater meets the heating stop condition of the electric heating tank, the electric heating tank is controlled to stop running the heating function.

[0024] Optionally, the third information includes: a pre-tank temperature and a third post-tank temperature of the electric heating tank; the fourth information includes: a third water flow rate of the internal circulation pipeline; and determining whether the gas water heater meets the heating stop condition of the electric heating tank based on the third information and the fourth information includes:

[0025] Obtaining the operating time of the heating function, and determining whether the operating time reaches a second preset time;

[0026] When the running time reaches the second preset time, determining that the gas water heater meets the heating stop condition of the electric heating tank;

[0027] When the operating time does not reach the second preset time, the water outlet temperature of the gas water heater is obtained in real time, and based on the temperature before the tank, the temperature after the third tank, the third water flow rate and the water outlet temperature, it is determined whether the gas water heater meets the heating stop condition of the electric heating tank.

[0028] Optionally, when at least one of the following conditions is met, it is determined that the gas water heater meets the heating stop condition of the electric heating tank:

[0029] A) a weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to a first preset temperature;

[0030] B) the temperature after the third tank is greater than or equal to a second preset temperature, and the second preset temperature is less than the first preset temperature;

[0031] C) the outlet water temperature is greater than or equal to a third preset temperature, and the outlet water temperature is obtained after the heating function is operated for a second preset time period;

[0032] D) the third water flow rate is less than a third preset water flow rate;

[0033] E) Determine whether there is water use behavior by the user.

[0034] Optionally, the real-time acquisition of the first information of the electric heating tank and the second information of the internal circulation pipeline includes:

[0035] When it is determined that the current moment is within a preset time period corresponding to the fixed-point zero cold water, first information of the electric heating tank and second information of the internal circulation pipeline are acquired in real time;

[0036] When it is determined that the current moment is not within the preset time period corresponding to the fixed-point zero cold water, detecting whether there is a user in a preset area, the preset area being a preset area corresponding to a target device, and the target device being a device that has a water supply relationship with the gas water heater;

[0037] When it is determined that there is a user in the preset area, the first information of the electric heating tank and the second information of the internal circulation pipeline are acquired in real time.

[0038] In a second aspect, the present application provides an internal circulation preheating device based on electric heating, comprising:

[0039] an acquisition module, configured to acquire first information of the electric heating tank and second information of the internal circulation pipeline in real time;

[0040] a determination module, configured to determine whether the gas water heater meets the electric heating condition of the electric heating tank according to the first information and the second information;

[0041] The control module is used to control the electric heating tank to run a heating function to preheat the water in the inner circulation pipeline when it is determined that the gas water heater meets the electric heating conditions of the electric heating tank.

[0042] Optionally, the device further includes: a judgment module;

[0043] The judgment module is used to judge whether the first water flow rate reaches a first preset water flow rate and whether the first tank temperature is less than or equal to a preheating temperature;

[0044] The determination module is specifically used to determine that the gas water heater meets the electric heating condition of the electric heating tank when the first water flow reaches the first preset water flow and the first after-tank temperature is less than or equal to the preheating temperature.

[0045] Optionally, the acquisition module is further configured to acquire the previous water usage information of the gas water heater, the previous water usage information including: the end time of the previous water usage and the duration of the previous water usage;

[0046] The judgment module is further configured to judge whether the duration of the previous water use reaches a first preset duration when the end time of the previous water use and the current time meet a preset condition;

[0047] The judgment module is further configured to judge, when the previous water use duration reaches a first preset duration, whether the second water flow rate is less than a second preset water flow rate and whether the second tank temperature is less than or equal to the preheating temperature, wherein the second water flow rate is the water flow rate in the internal circulation pipeline when the water pump is not turned on, the first water flow rate is the water flow rate in the internal circulation pipeline when the water pump is turned on, and the second water flow rate is less than the first water flow rate;

[0048] The determining module is further configured to determine that the gas water heater meets a water pump start-up condition of the internal circulation pipeline when the second water flow rate is less than the second preset water flow rate and the second tank post-temperature is less than or equal to the preheating temperature;

[0049] The determining whether the first water flow rate reaches a first preset water flow rate and whether the first post-tank temperature is less than or equal to a preheating temperature includes:

[0050] The judgment module is specifically used to judge whether the first water flow rate reaches a first preset water flow rate and whether the first tank rear temperature is less than or equal to the preheating temperature when it is determined that the gas water heater meets the water pump start-up conditions of the internal circulation pipeline.

[0051] Optionally, the acquisition module is further configured to acquire in real time third information of the electric heating tank and fourth information of the internal circulation pipeline, wherein the third information and the fourth information are acquired when the electric heating tank operates a heating function;

[0052] The determining module is further configured to determine whether the gas water heater satisfies a heating stop condition of the electric heating tank based on the third information and the fourth information;

[0053] The control module is specifically configured to control the electric heating tank to stop running the heating function when it is determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0054] Optionally, the acquisition module is further configured to acquire the operating time of the heating function and determine whether the operating time reaches a second preset time;

[0055] The determining module is specifically configured to determine that the gas water heater meets the heating stop condition of the electric heating tank when the operating time reaches the second preset time;

[0056] The acquisition module is further configured to acquire the outlet water temperature of the gas water heater in real time when the operating time does not reach the second preset time;

[0057] The determination module is specifically used to determine whether the gas water heater meets the heating stop condition of the electric heating tank based on the pre-tank temperature, the third post-tank temperature, the third water flow rate and the outlet water temperature.

[0058] Optionally, the determining module is further configured to determine that the gas water heater meets the heating stop condition of the electric heating tank when at least one of the following conditions is met:

[0059] A) a weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to a first preset temperature;

[0060] B) the temperature after the third tank is greater than or equal to a second preset temperature, and the second preset temperature is less than the first preset temperature;

[0061] C) the outlet water temperature is greater than or equal to a third preset temperature, and the outlet water temperature is obtained after the heating function is operated for a second preset time period;

[0062] D) the third water flow rate is less than a third preset water flow rate;

[0063] E) Determine whether there is water use behavior by the user.

[0064] Optionally, the acquisition module is further configured to acquire the first information of the electric heating tank and the second information of the internal circulation pipeline in real time when it is determined that the current moment is within a preset time period corresponding to the fixed-point zero cold water;

[0065] The device further comprises: a detection module;

[0066] The detection module is configured to detect whether there is a user in a preset area when it is determined that the current time is not within a preset time period corresponding to the fixed-point zero cold water supply, wherein the preset area is a preset area corresponding to a target device, and the target device is a device that has a water supply relationship with the gas water heater;

[0067] The acquisition module is further configured to acquire the first information of the electric heating tank and the second information of the internal circulation pipeline in real time when it is determined that there is a user in the preset area.

[0068] In a third aspect, the present application provides an internal circulation preheating device based on electric heating, comprising:

[0069] Memory;

[0070] processor;

[0071] wherein the memory stores computer-executable instructions;

[0072] The processor executes the computer-executable instructions stored in the memory to implement the inner-circulation preheating method based on electric heating as described in the above-mentioned first aspect and various possible implementations of the first aspect.

[0073] In a fourth aspect, the present application provides a computer storage medium having computer execution instructions stored thereon, and the computer execution instructions are executed by a processor to implement the internal circulation preheating method based on electric heating as described in the above-mentioned first aspect and various possible implementation methods of the first aspect.

[0074] The electric heating-based internal circulation preheating method provided in this application determines, based on first information from the electric heating tank and second information from the internal circulation piping, that the gas water heater meets the electric heating tank's electric heating tank conditions and then controls the electric heating tank to operate its heating function. By monitoring and determining the status of the electric heating tank and internal circulation piping in real time, this method not only ensures that users enjoy a stable temperature supply when using hot water, but also successfully reduces the noise level of the gas water heater during operation, thereby improving user comfort and satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0076] Figure 1 The process of the internal circulation preheating method based on electric heating provided in this application Figure 1 ;

[0077] Figure 2 The process of the internal circulation preheating method based on electric heating provided in this application Figure 2 ;

[0078] Figure 3 The process of the internal circulation preheating method based on electric heating provided in this application Figure 3 ;

[0079] Figure 4 This is a schematic structural diagram of an internal circulation preheating device based on electric heating provided by the present application;

[0080] Figure 5 It is a structural schematic diagram of the internal circulation preheating equipment based on electric heating provided in this application.

[0081] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0082] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0083] The terms "first," "second," "third," "fourth," and so forth (if any) in the description and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention described herein can, for example, be implemented in sequences other than those illustrated or described herein.

[0084] In the embodiments, words such as "exemplary" or "for example" are used to indicate an example, instance, or illustration. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0085] With the continuous advancement of technology and the significant improvement in people's quality of life, smart homes have become a new trend. Gas water heaters, as core components of smart homes, are popular among consumers for their high efficiency, energy saving, and convenience. As a type of household heating device, gas water heaters heat water by burning natural gas, liquefied petroleum gas, or other combustible gases, thereby meeting users' needs for hot water and providing a more convenient living experience.

[0086] Although gas water heaters are popular among consumers, they still face some technical challenges in smart home applications. First, the slow hot water output rate affects the user experience. The existing solution is to add a circulating water pump inside the water heater to preheat the water before the user uses it. However, the above method requires the user to wait for a while before the hot water appears, and there is also the problem of increased energy consumption during the preheating process. At the same time, during the preheating process, the gas water heater will generate a lot of noise, which affects the user experience.

[0087] Therefore, how to reduce the noise generated by the gas water heater during operation while also achieving internal circulation preheating is a problem that needs to be solved at present.

[0088] To address the above issues, this application provides an internal circulation preheating method based on electric heating. Based on first information from the electric heating tank and second information from the internal circulation piping, the method controls the electric heating tank to operate its heating function when it determines that the gas water heater meets the electric heating tank's requirements. By monitoring and determining the status of the electric heating tank and internal circulation piping in real time, this method not only ensures a stable temperature supply for users when using hot water, but also successfully reduces the noise level of the gas water heater during operation, thereby improving user comfort and satisfaction.

[0089] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0090] Figure 1 The process of the inner circulation preheating method based on electric heating provided in the embodiment Figure 1 The execution subject of this embodiment may be, for example, a processor of a gas water heater. Figure 1 As shown, the internal circulation preheating method based on electric heating provided in this embodiment includes:

[0091] S101: Acquire first information of the electric heating tank and second information of the internal circulation pipeline in real time.

[0092] The first information is used to indicate the initial working information of the electric heating tank, such as the functional parameters of the electric heating tank, the temperature before the tank or the temperature after the tank, etc. The second information is used to indicate the water flow information flowing through the internal circulation pipeline, such as the water flow rate, water pressure or water flow velocity, etc.

[0093] By obtaining the first information of the electric heating tank, it is possible to obtain the working status of the electric heating tank and the water flow information flowing through the electric heating tank from the internal circulation pipeline. And by obtaining the second information of the internal circulation pipeline, it is possible to obtain the water flow information flowing from the water pump through the internal circulation pipeline.

[0094] It can be understood that the corresponding workflow in the gas heating system is: first, the water pump draws water from a certain place (such as a water tank or groundwater) and pushes it into the inner circulation pipeline. The inner circulation pipeline acts as a channel for conveying water flow, ensuring that the water flows stably and smoothly to the next link. Then, the water flows into the electric heating tank through the inner circulation pipeline. When the heating function of the electric heating tank is started, the temperature of the water flowing through the electric heating tank will be increased. Then, the water heated by the electric heating tank will return to the inner circulation pipeline. Finally, the water heated by the electric heating tank will flow out of the inner circulation pipeline and flow into the gas heater.

[0095] Therefore, by obtaining the first working information of the electric heating tank, not only the working status of the electric heating tank (such as "off state") can be obtained, but also the water flow information flowing into the electric heating tank from the internal circulation pipeline can be obtained (such as water pressure of 0.5 MPa and water temperature of 20 degrees Celsius).

[0096] At the same time, by obtaining the second information of the inner circulation pipeline, not only the water flow information flowing through the inner circulation pipeline can be obtained (such as the water flow velocity is 2 m / s, the water pressure is 0.5 MPa, and the water volume is 5 cubic meters / hour), but also the water volume in the inner circulation pipeline can be obtained to meet the conditions for water circulation in the inner circulation pipeline, so as to provide guarantee for the water volume flowing through the inner circulation pipeline.

[0097] Since it is necessary to obtain the first information of the electric heating tank and the second information of the internal circulation pipeline, different acquisition factors and different acquisition methods can be determined. For example, when the acquisition factor is the first information, it can be obtained through a temperature sensor or from the display device of the gas water heater.

[0098] When the acquisition factor is the second information, it may be acquired through a pressure sensor or a speed sensor, for example.

[0099] S102: Determine whether the gas water heater meets the electric heating conditions of the electric heating tank based on the first information and the second information.

[0100] Among them, the electric heating conditions of the electric heating tank include: the water temperature flowing through the electric heating tank is lower than the water temperature allowed for heating by the electric heating tank, and the water flow rate flowing through the electric heating tank reaches the water flow rate allowed for heating by the electric heating tank.

[0101] By comprehensively considering the first information of the electric heating tank and the second information of the internal circulation pipeline, it means that the water temperature flowing through the outlet of the electric heating tank from the internal circulation pipeline can be obtained, and relevant information about the water flow flowing through the electric heating tank can also be obtained.

[0102] As can be understood, since the water flowing through the electric heating tank primarily originates from the internal circulation pipeline, when the water temperature flowing through the electric heating tank is measured, it can be assumed that this is the temperature of the water flowing through the internal circulation pipeline. The water in the internal circulation pipeline flows via the water pump, which means that the water pump provides the incoming water flow to the electric heating tank. Therefore, based on the acquired second information about the internal circulation pipeline, relevant information about the water flow entering the electric heating tank can be obtained.

[0103] Therefore, by combining the first information of the electric heating tank and the second information of the internal circulation pipeline, not only the water temperature flowing through the electric heating tank from the internal circulation pipeline can be considered, but also the water flow condition in the internal circulation pipeline can be considered, so as to determine whether it is necessary to start the heating function of the electric heating tank to ensure that the water temperature required by the user is met.

[0104] S103: When it is determined that the gas water heater meets the electric heating condition of the electric heating tank, the electric heating tank is controlled to operate a heating function to preheat the water in the internal circulation pipeline.

[0105] If the gas water heater meets the electric heating requirements of the electric heating tank, it means that the water temperature flowing through the electric heating tank from the internal circulation pipeline has not reached the user's desired temperature. Therefore, in order to ensure that the water temperature sprayed by the water-using equipment connected to the gas water heater meets the user's requirements, it is necessary to control the electric heating tank to operate the heating function to preheat the water in the internal circulation pipeline.

[0106] As you can understand, the inner circulation pipe is connected to the bottom or side of the electric heating tank, forming a closed circulation system. The working process is that water flows from one end of the inner circulation pipe, is heated by the heating element of the electric heating tank, and then flows out from the other end and returns to the inner circulation pipe to continue circulation.

[0107] Therefore, when it is determined that the gas water heater meets the electric heating conditions of the electric heating tank, in order to ensure that the water temperature released by the water-using equipment connected to the gas water heater reaches the water temperature required by the user, it is necessary to control the electric heating tank to operate the heating function, so as to preheat the water temperature in the internal circulation pipeline.

[0108] The internal circulation preheating method based on electric heating provided in this embodiment, after obtaining the first state information of the electric heating tank and the second state information of the internal circulation pipeline, makes a comprehensive judgment based on this information. When the heating conditions of the electric heating tank are met, the electric heating tank is controlled to start the heating function, thereby preheating the water in the internal circulation pipeline.

[0109] By acquiring real-time status information of the electric heating tank and the internal circulation pipeline, this method can accurately determine whether the electric heating function needs to be activated, thereby avoiding unnecessary energy waste and improving energy utilization efficiency. In addition, by monitoring and judging the status of the electric heating tank and the internal circulation pipeline in real time, this method ensures that users receive a stable temperature supply when using hot water, improving user comfort and satisfaction, thereby solving the problem of reducing the noise generated by the gas water heater while also achieving internal circulation preheating; at the same time, in the case of a long water path of the gas water heater, this method can fully avoid the situation where users experience cold or scalding water when boiling water for the second time.

[0110] Figure 2 The process of the inner circulation preheating method based on electric heating provided in the embodiment Figure 2 The execution subject of this embodiment may be, for example, a processor of a gas water heater. Figure 2 As shown, this embodiment is in Figure 1 Based on the embodiment, the inner circulation preheating method based on electric heating is described in detail. The inner circulation preheating method based on electric heating provided in this embodiment includes:

[0111] S201: Acquire first information of the electric heating tank and second information of the internal circulation pipeline in real time, wherein the first information includes: a first post-tank temperature of the electric heating tank and a second post-tank temperature of the electric heating tank, and the second information includes: a first water flow rate of the internal circulation pipeline and a second water flow rate of the internal circulation pipeline.

[0112] The first post-tank temperature is the temperature of the water flowing through the outlet of the electric heating tank when the water pump is turned on. The second post-tank temperature is the temperature of the water flowing through the outlet of the electric heating tank when the water pump is turned off. The first post-tank temperature and the second post-tank temperature can be the same or different.

[0113] The first water flow rate is the water flow rate in the internal circulation pipeline when the water pump is in the on state. The second water flow rate is the water flow rate in the internal circulation pipeline when the water pump is not in the off state. The second water flow rate is smaller than the first water flow rate.

[0114] By obtaining the first information of the electric heating tank and the second information of the internal circulation pipeline, it is possible to obtain the temperature of the water flowing from the internal circulation pipeline through the outlet of the electric heating tank when the water pump is in the off state, as well as information related to the water flow through the electric heating tank. At the same time, it is also possible to obtain the temperature of the water flowing from the internal circulation pipeline through the outlet of the electric heating tank when the water pump is in the on state, as well as information related to the water flow through the electric heating tank.

[0115] It is understandable that since the water pump provides power for the water circulation in the inner circulation pipeline, by obtaining the second information of the inner circulation pipeline, relevant information (such as water flow rate) of the water flow flowing into the inner circulation pipeline from the water pump can be obtained.

[0116] At the same time, the internal circulation pipeline is connected to the bottom or side of the electric heating tank. The working process between the two is that water flows out from one end of the internal circulation pipeline and enters the inlet end of the electric heating tank, then flows out from the outlet end of the electric heating tank and enters the other end of the internal circulation pipeline to continue the circulation. Therefore, by obtaining the first information of the electric heating tank, it is possible to obtain relevant information about the water flowing out of the outlet of the electric heating tank.

[0117] Optionally, before obtaining the first information of the electric heating tank and the second information of the internal circulation pipeline in real time, the method may also include, for example: when it is determined that the current moment is within the preset time period corresponding to the fixed point zero cold water, obtaining the first information of the electric heating tank and the second information of the internal circulation pipeline in real time; when it is determined that the current moment is not within the preset time period corresponding to the fixed point zero cold water, detecting whether there is a user in a preset area, the preset area is a preset area corresponding to the target device, and the target device is a device that has a water supply relationship with the gas water heater; when it is determined that there is a user in the preset area, obtaining the first information of the electric heating tank and the second information of the internal circulation pipeline in real time.

[0118] The current time indicates the local time in the gas water heater's location. The key feature of fixed-point zero-cold water is instant hot water. The preset time period for fixed-point zero-cold water refers to the user setting the desired hot water temperature within a specific time period. The preset area corresponds to the target device, which is the device that supplies water to the gas water heater.

[0119] As you can understand, the fixed-point zero cold water water heater can achieve the function of instant hot water. When the user needs hot water, there is no need to wait for the preheating time. In addition, the setting period of zero-point zero cold water can be set by the user according to his or her own needs and living habits, and can also be pre-set by the manufacturer of the gas water heater.

[0120] The purpose of judging whether the current moment is within the preset time period corresponding to the fixed-point zero cold water is to determine whether the fixed-point zero cold water function needs to be activated.

[0121] It is understood that by determining whether the current time is within the user-set water usage time period, it can be determined whether the zero cold water function needs to be activated to provide the required hot water during the water usage period. If the current time is within the set water usage time period, the zero cold water function can be activated to increase the speed and efficiency of hot water supply, thereby meeting the user's hot water needs.

[0122] If the current moment is within the preset time period corresponding to the fixed-point zero cold water, it indicates that the fixed-point zero cold water function needs to be started. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained in real time.

[0123] If the current moment is not within the preset time period corresponding to the fixed-point zero cold water function, it indicates that there is no need to start the fixed-point zero cold water function. At this time, it is possible to detect whether there is a user in the preset area.

[0124] The purpose of detecting whether there is a user in the preset area is to determine whether there is a user near the area of ​​the device that has a water supply relationship with the gas water heater.

[0125] It can be understood that by detecting whether the user is in the area, it can be determined whether it is necessary to start or maintain the working state of the gas water heater to meet the user's hot water demand.

[0126] If there are users in the preset area, it means that there are users near the area of ​​the equipment that has a water supply relationship with the gas water heater. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained in real time.

[0127] If there is no user in the preset area, it means that there is no user near the area of ​​the device that has a water supply relationship with the gas water heater. At this time, it is possible to re-detect whether there is a user in the preset area.

[0128] S202: Acquire the last water usage information of the gas water heater, where the last water usage information includes the end time of the last water usage and the duration of the last water usage.

[0129] Among them, by obtaining the previous water usage information of the gas water heater, the time when the user stopped using the gas water heater and the total usage time of the user using the gas water heater can be obtained.

[0130] The method of obtaining the previous water usage information of the gas water heater may be, for example, obtaining it by querying the usage record of the gas water heater, or obtaining it from the operation control system of the gas water heater. This application does not impose any special restrictions on this.

[0131] For example, suppose user A turns off their gas water heater at 8 p.m. and turns it on again at 6 a.m. the next morning. By querying the water heater's water usage records, the system can determine that the user last used it at 8 p.m. and that the gas water heater ran for a total of 10 hours from 8 p.m. to 6 a.m. the next day.

[0132] S203: Acquire the current time of the gas water heater.

[0133] The current time is used to indicate the regional time where the gas water heater is located.

[0134] By obtaining the current time, it is possible to obtain the gas water heater's current location and the local time at that location.

[0135] The current time can be obtained, for example, by accessing a terminal device connected to the gas water heater, by using a GPS receiver, or by accessing the system clock of the gas water heater. This application does not impose any special restrictions on this.

[0136] For example, if the gas water heater is located in Beijing, China, and the current time is 14:30 on January 25, 2024, then the regional time of the gas water heater can be obtained as 14:30 on January 25, 2024.

[0137] S204: Determine whether the previous water use end time and the current time meet a preset condition; if so, execute step S201; if not, execute step S205.

[0138] The preset condition may be, for example, 1 minute.

[0139] The purpose of judging whether the last water use end time of the gas water heater and the current time meet the preset conditions is to determine whether the working state of the gas water heater is the shutdown state.

[0140] As you can understand, the off state means the gas water heater is stopped and not heating or providing hot water. When the water heater is off, it consumes no energy and produces no hot water. Therefore, by determining whether the gas water heater is off, it can be determined whether the user is actively using the water heater. If the water heater is not off, it can be inferred that the user is actively using the water heater, as the water heater only starts when the user needs hot water.

[0141] If the last water use end time of the gas water heater and the current time meet the preset conditions, it indicates that the working state of the gas water heater is off, and the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again in real time.

[0142] If the last water use end time of the gas water heater and the current time do not meet the preset conditions, it indicates that the working state of the gas water heater is not the shutdown state, that is, the working state of the gas water heater is the on state. At this time, it can be judged whether the last water use time of the gas water heater has reached the first preset time.

[0143] S205: Determine whether the previous water usage duration reaches a first preset duration; if so, execute steps S206 and S207; if not, execute step S201.

[0144] The first preset duration may be, for example, 30 seconds.

[0145] The purpose of judging whether the last water usage duration of the gas water heater reaches the first preset duration is to determine whether the user has mistakenly touched the water-using device connected to the gas water heater.

[0146] If the last water usage time of the gas water heater reaches the first preset time, it indicates that the user has not accidentally touched the water-using equipment connected to the gas water heater. At this time, it is possible to judge whether the second water flow rate of the internal circulation pipeline is less than the second preset water flow rate while judging whether the second temperature of the electric heating tank is less than or equal to the preset temperature of the electric heating tank.

[0147] If the last water usage time of the gas water heater does not reach the first preset time, it indicates that the user has mistakenly touched the water-using device connected to the gas water heater. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again.

[0148] It can be understood that since the purpose of the first preset time is to determine whether the user has accidentally touched the water-using equipment connected to the gas water heater, by comprehensively considering the water-using time of the gas water heater and the first preset time, it can be determined whether the user has accidentally touched the water-using equipment connected to the gas water heater, thereby determining whether the gas water heater can operate normally.

[0149] When it is determined that the last water usage time of the gas water heater has reached the first preset time, it means that the user has not accidentally touched the water-using equipment connected to the gas water heater, and the user is using the water-using equipment normally. At this time, in order to improve the working efficiency of the gas water heater, it is necessary not only to continue to judge whether the second water flow rate of the internal circulation pipeline is less than the second preset water flow rate, but also to continue to judge whether the second temperature of the electric heating tank is less than or equal to the preset temperature of the electric heating tank.

[0150] When it is determined that the last water usage time of the gas water heater has not reached the first preset time, it means that the user has mistakenly touched the water-using equipment connected to the gas water heater. At this time, the user did not use the water-using equipment normally. At this time, in order to improve the working efficiency of the gas water heater, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again.

[0151] S206: Determine whether the second water flow rate is less than a second preset water flow rate; if so, execute step S208; if not, execute step S201.

[0152] The second preset water flow rate may be 0.9L, for example.

[0153] The purpose of judging whether the second water flow rate of the inner circulation pipeline is less than the second preset water flow rate is to determine whether the amount of water stored in the water pump can enable the water flow in the inner circulation pipeline to form a stable and effective water flow circulation.

[0154] If the second water flow rate of the internal circulation pipeline is less than the second preset water flow rate, it means that the amount of water stored in the water pump cannot form a stable and effective water flow circulation in the internal circulation pipeline. At this time, the second tank post-temperature of the electric heating tank and the preheating temperature of the electric heating tank can be comprehensively considered to jointly determine whether the gas water heater meets the water pump start-up conditions of the internal circulation pipeline.

[0155] If the second water flow rate of the internal circulation pipeline is not less than the second preset water flow rate, it indicates that the amount of water stored in the water pump can enable the water flow in the internal circulation pipeline to form a stable and effective water flow circulation. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again in real time.

[0156] It's understandable that sufficient water volume is key to ensuring a continuous, stable water flow and smooth circulation within the internal circulation piping, and it's also a prerequisite for the electric heating tank to effectively heat the water flowing through it. Therefore, by considering the second water flow rate of the internal circulation piping in conjunction with the second preset water flow rate, it's possible to not only clearly determine whether the water volume stored by the water pump is sufficient to support a stable and efficient water flow in the internal circulation piping, but also to determine whether the electric heating tank is adequately heating the water flowing through it.

[0157] If the second water flow rate of the internal circulation pipeline is not less than the second preset water flow rate, it can be determined that the water amount currently stored in the water pump is sufficient, and the internal circulation pipeline can form a stable and effective water flow circulation, and the electric heating tank can also fully heat the water flowing through it. Conversely, if the second water flow rate of the internal circulation pipeline is less than the second preset water flow rate, it can be determined that the water amount currently stored in the water pump is scarce, and the water amount stored in the water pump cannot form a stable and effective water flow circulation in the internal circulation pipeline, and the electric heating tank cannot fully heat the water flowing through it.

[0158] S207: Determine whether the temperature after the second tank is less than or equal to the preheating temperature; if so, execute step S208; if not, execute step S201.

[0159] The preheating temperature is used to indicate the water temperature that is allowed to be heated by the triggering electric heating tank.

[0160] The purpose of judging whether the temperature after the second tank of the electric heating tank is less than or equal to the preset temperature of the electric heating tank is to determine whether the temperature of the water flowing through the electric heating tank can enable the electric heating tank to be preheated.

[0161] If the second temperature of the electric heating tank is less than or equal to the preset temperature of the electric heating tank, it indicates that the water temperature flowing through the electric heating tank cannot allow the electric heating tank to be preheated. At this time, the second water flow rate of the internal circulation pipeline and the water flow rate less than the preset water flow rate can be comprehensively considered to jointly determine whether it is necessary to start the water inlet function of the water pump.

[0162] If the second temperature of the electric heating tank is not less than or equal to the preset temperature of the electric heating tank, it indicates that the water temperature flowing through the electric heating tank can preheat the electric heating tank. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again in real time.

[0163] It is understandable that the conditions for the electric heating tank to activate the heating function include the water temperature flowing through the water outlet of the electric heating tank not reaching the heating temperature of the electric heating tank, and the water flow rate flowing through the electric heating tank reaching the water flow rate allowed by the electric heating tank for heating. Therefore, by comprehensively considering the temperature after the second tank of the electric heating tank and the preset temperature of the electric heating tank, it is possible to determine not only whether the heating function of the electric heating tank can be successfully activated, but also whether the water pump function needs to be activated.

[0164] If the temperature after the second tank of the electric heating tank is less than or equal to the preset temperature, it means that the temperature of the water flowing through the water outlet of the electric heating tank has not reached the heating temperature of the electric heating tank. At the same time, it also means that the water flowing through the electric heating tank cannot preheat the electric heating tank. Therefore, in order to ensure that the heating function of the electric heating tank can be successfully started, it is necessary to start the water inlet function of the water pump to ensure that the heating function of the electric heating tank is started.

[0165] On the contrary, if the second temperature of the electric heating tank is not less than or equal to the preset temperature, it means that the temperature of the water flowing through the water outlet of the electric heating tank has reached the heating temperature of the electric heating tank. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be re-acquired in real time.

[0166] S208: Determine whether the gas water heater meets the water pump start-up conditions of the internal circulation pipeline.

[0167] Among them, when it is determined that the second water flow rate of the internal circulation pipeline is less than the preset water flow rate, and the second temperature of the electric heating tank is less than or equal to the preset temperature of the electric heating tank, it not only means that the water flow rate flowing from the water pump through the internal circulation pipeline cannot make the water flow in the internal circulation pipeline form a stable and effective water flow circulation, but also means that the water flow flowing through the electric heating tank requires the electric heating tank to be preheated. Therefore, it is necessary to start the water inlet function of the water pump of the internal circulation pipeline.

[0168] It's understandable that when the second water flow rate of the internal circulation pipeline is less than the preset water flow rate, this means that the current water flow rate is insufficient to form a stable and effective water circulation in the internal circulation pipeline. Insufficient water flow can be caused by a variety of reasons, such as insufficient water stored in the water pump, a pipe blockage, or a valve that is not fully open. Therefore, in this case, if measures are not taken to increase the water flow rate, the internal circulation pipeline may not function properly, resulting in reduced performance or even failure of the water heater.

[0169] At the same time, if the second temperature of the electric heating tank is less than or equal to the preset temperature of the electric heating tank, it means that the current water temperature has not yet reached the heating temperature of the electric heating tank. This may be because the heating function of the electric heating tank is not activated. Therefore, in this case, if the heating function of the electric heating tank is not activated, the water flowing through the electric heating tank will not be effectively preheated, thereby affecting the quality of the hot water supply.

[0170] Therefore, when it is determined that the second water flow rate of the internal circulation pipeline is less than the preset water flow rate, and the second temperature of the electric heating tank is less than or equal to the preset temperature of the electric heating tank, it not only means that the water flow in the internal circulation pipeline is unstable, but also that the electric heating tank cannot preheat the water. Therefore, in order to improve these two situations, it is necessary to start the water pump of the internal circulation pipeline to promote stable circulation of the internal circulation pipeline and ensure that the water flow can be fully preheated when passing through the electric heating tank.

[0171] Optionally, when it is determined that the second water flow rate of the internal circulation pipeline is less than the preset water volume and the second temperature of the electric heating tank is less than or equal to the preset temperature, in order to fully consider the water pump start-up conditions of the internal circulation pipeline so as to improve the operating efficiency of the gas water heater and reduce energy efficiency, for example, the following aspects may also be considered:

[0172] 1) Determine whether the gas water heater is currently operating in a circulating constant temperature function; if so, determine whether the gas water heater meets the water pump start-up conditions of the internal circulation pipeline.

[0173] Among them, the circulating constant temperature function means that the gas water heater can ensure the temperature of hot water is stable whether it is during peak water usage or other time periods, and will not fluctuate between hot and cold.

[0174] The purpose of judging whether the gas water heater is currently operating in a circulating constant temperature function is to determine whether the water temperature sprayed by the water-using equipment connected to the gas water heater is required to provide the user with a stable and comfortable experience.

[0175] It can be understood that by confirming whether the water heater is in a circulating constant temperature working state, it can ensure that the temperature of the hot water required by the user is constant, avoiding discomfort caused by water temperature fluctuations, and when the water temperature does not reach the hot water temperature required by the user, the water pump will automatically start and reheat the water in the water tank to ensure that the water temperature is the hot water temperature required by the user.

[0176] If the gas water heater is currently operating in the circulating constant temperature function, it indicates that the water temperature sprayed by the water-using equipment connected to the gas water heater needs to provide the user with a stable and comfortable experience. At this time, it can be determined that the gas water heater meets the water pump start-up conditions of the internal circulation pipeline.

[0177] If the gas water heater is not in the circulating constant temperature function at the current moment, it means that the water temperature sprayed by the water-using equipment connected to the gas water heater does not need to provide the user with a stable and comfortable experience. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again in real time.

[0178] 2) Determine whether the working period of the gas water heater is within the time operation interval of the timed zero cold water mode; if so, determine that the gas water heater meets the water pump start-up conditions of the internal circulation pipeline.

[0179] The timed zero cold water mode is a gas water heater operating mode that allows users to pre-set a specific time period. During this time, the water heater will pre-circulate heat, ensuring that users get hot water immediately when they turn on the tap, without having to wait for cold water to flow out. This mode is particularly suitable for families with regular hot water usage habits, such as morning washing and evening bathing.

[0180] The scheduled zero-cold-water mode operates during specific time periods set by the user. For example, a user could set zero-cold-water service to occur from 6:00 AM to 8:00 AM and from 9:00 PM to 11:00 PM each day. During these times, the water heater will operate in scheduled zero-cold-water mode, pre-heating the hot water.

[0181] The purpose of judging whether the working period of the gas water heater is within the time operation interval of the timed zero cold water mode is mainly to determine whether the gas water heater needs to provide immediate hot water service to the user.

[0182] Understandably, by determining whether the current time is within the preset time operation range, the gas water heater can automatically adjust its operating mode to meet the user's hot water needs and improve the user's water experience. At the same time, this also helps save energy, because during non-set time periods, the gas water heater can operate in other modes or be in standby mode, reducing unnecessary energy consumption.

[0183] If the working period of the gas water heater is within the time operation range of the timed zero cold water mode, it indicates that the gas water heater needs to provide immediate hot water service to the user. At this time, it can be determined that the gas water heater meets the water pump start-up conditions of the internal circulation pipeline.

[0184] If the working period of the gas water heater is not within the time operation interval of the timed zero cold water mode, it indicates that the gas water heater does not need to provide immediate hot water service to the user. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again in real time.

[0185] S209: Determine whether the first water flow rate reaches a first preset water flow rate; if so, execute step S211; if not, execute step S201.

[0186] The first preset water flow rate may be, for example, 1.5L.

[0187] Determine whether the first water flow rate of the inner circulation pipeline reaches the first preset water flow rate Purpose: To determine whether the water flow from the inner circulation pipeline through the electric heating tank can enable the electric heating tank to start the heating function.

[0188] If the first water flow rate of the inner circulation pipeline reaches the first preset water flow rate, it indicates that the water flow from the inner circulation pipeline through the electric heating tank can enable the electric heating tank to start the heating function. At this time, the first post-tank temperature of the electric heating tank and the preheating temperature of the electric heating tank can be comprehensively considered to jointly determine whether the gas water heater meets the electric heating conditions of the electric heating tank.

[0189] If the first water flow rate of the inner circulation pipeline does not reach the first preset water flow rate, it indicates that the water flow from the inner circulation pipeline through the electric heating tank cannot enable the electric heating tank to start the heating function. At this time, the first information of the electric heating tank and the second information of the inner circulation pipeline can be obtained again in real time.

[0190] As you can understand, the primary function of an electric heating tank is to heat water through the heating element. As water flows through the tank, the heating element converts electrical energy into heat and transfers this heat to the water. Therefore, sufficient water flow is required to carry away this heat for effective heat transfer.

[0191] In addition, if the water flow from the internal circulation pipe through the electric heating tank is too small, the heat generated by the heating element cannot be quickly carried away by sufficient water flow, causing heat to accumulate inside the electric heating tank, which may cause overheating or damage the heating element.

[0192] S210: Determine whether the temperature after the first tank is less than or equal to the preheating temperature; if so, execute step S211; if not, execute step S201.

[0193] The preset temperature is used to indicate the water temperature threshold that triggers the electric heating tank to start heating.

[0194] The purpose of judging whether the temperature after the first tank of the electric heating tank is less than or equal to the preheating temperature is to determine whether the water temperature flowing through the electric heating tank requires heating treatment by the electric heating tank.

[0195] If the first post-tank temperature of the electric heating tank is less than or equal to the preheating temperature, it indicates that the temperature of the water flowing through the electric heating tank requires heating treatment by the electric heating tank. At this time, the first water flow rate and the first preset water flow rate of the internal circulation pipeline can be comprehensively considered to jointly determine whether the gas water heater meets the electric heating conditions of the electric heating tank.

[0196] If the temperature after the first tank of the electric heating tank is not less than or equal to the preheating temperature, it means that the temperature of the water flowing through the electric heating tank does not require heating treatment by the electric heating tank. At this time, the first information of the electric heating tank and the second information of the internal circulation pipeline can be obtained again in real time.

[0197] S211: Determine whether the gas water heater meets the electric heating conditions of the electric heating tank.

[0198] Among them, when it is determined that the temperature after the first tank of the electric heating tank is less than or equal to the preheating temperature, and the first water flow rate of the internal circulation pipeline reaches the first preset water flow rate, it can be determined that the water flow from the internal circulation pipeline through the electric heating tank can enable the electric heating tank to start the heating function.

[0199] As you can understand, if the temperature after the first tanking of the electric heating tank is less than or equal to the preheating temperature, it means that the water in the electric heating tank has not yet reached the expected level of heating. The preheating temperature is a temperature threshold set by the electric heating tank. When the temperature of the water flowing through the electric heating tank is lower than the preheating temperature, the heating function should be activated to increase the water temperature, thus ensuring that the electric heating tank will start heating when the water temperature is not high enough to meet user needs.

[0200] Secondly, ensuring that the water flow in the internal circulation piping reaches the first preset flow rate is a critical condition, as it ensures sufficient water flow through the electric heating tank. Adequate water flow means that the heat generated by the heating element is effectively transferred to the water flow, preventing heat accumulation within the electric heating tank while ensuring that heat is quickly transferred to the user. Furthermore, achieving the preset water flow rate also indicates that the system is operating normally, without problems such as water flow obstruction or leaks.

[0201] Therefore, when the current temperature of the electric heater tank is lower than the preheating temperature and the water flow rate in the internal circulation pipeline meets the preset requirements, the electric heating conditions of the electric heater tank are met. This ensures that the electric heater tank can start heating when needed and that there is sufficient water flow to remove heat, thereby achieving effective heat transfer and meeting the user's hot water needs. At the same time, this also meets the energy-saving and safe operation requirements of gas water heaters, avoiding unnecessary energy waste and potential safety risks.

[0202] Optionally, when it is determined that the temperature after the first tank of the electric heating tank is less than or equal to the preheating temperature, and the temperature after the first tank of the electric heating tank is less than or equal to the preheating temperature, in order to fully consider the electric heating conditions of the electric heating tank in order to improve the operating efficiency of the gas water heater and reduce energy efficiency, for example, the following aspects can also be considered: obtaining the working status of the gas water heater, and judging whether the working status of the gas water heater is a combustion state.

[0203] The combustion state refers to the combustion reaction of the gas water heater, which produces flames and hot water.

[0204] The purpose of judging whether the working state of the gas water heater is the combustion state is to determine whether the gas water heater needs to start the heating function a second time.

[0205] If the working state of the gas water heater is a combustion state, it indicates that the gas water heater does not need to start the heating function again. At this time, the working state of the gas water heater can be obtained again.

[0206] If the working state of the gas water heater is not a combustion state, it indicates that the gas water heater needs to start the heating function again. At the same time, it can also indicate that the gas water heater meets the electric heating conditions of the electric heating tank. At this time, the heating function of the electric heating tank can be turned on.

[0207] S212: Control the electric heating tank to stop running the heating function.

[0208] The purpose of controlling the electric heating tank to stop heating is to improve energy utilization and the service life of the gas water heater. For example, if the water flow in the internal circulation pipe is already hot enough, then continuing heating is unnecessary and may even bring safety risks.

[0209] Understandably, overheating can damage the gas water heater or cause safety issues. Therefore, by stopping the heating, you can ensure that the electric heating tank and other related components are operating within a safe temperature range.

[0210] In addition, overheated water may cause scalding or other injuries to users, so controlling the electric heating tank to stop heating can ensure that the hot water used by users is of appropriate and safe temperature.

[0211] The internal circulation preheating method based on electric heating provided in this embodiment, after obtaining the first information of the electric heating tank and the second information of the internal circulation pipeline, first, obtains the previous water use information of the gas water heater and the current time of the gas water heater, and then, when it is determined that the previous water use information and the current time meet the preset conditions, and the previous water use time in the previous water use information reaches the first preset time, it is determined that when the water pump is in the non-start state, the water flow in the internal circulation pipeline is less than the second preset water flow and the second tank post-tank temperature of the electric heating tank is less than or equal to the preheating temperature, it is determined that the gas water heater meets the water pump start-up condition of the internal circulation pipeline; secondly, after the gas water heater executes the end of the water pump working time, when it is determined that when the water pump is in the non-start state, the water flow in the internal circulation pipeline reaches the first preset water flow and the first tank post-tank temperature of the electric heating tank is less than or equal to the preheating temperature, it is determined that the gas water heater meets the electric heating condition of the electric heating tank.

[0212] This method helps reduce the thermal and mechanical loads on gas water heaters by precisely controlling the heating function and the water pump's activation conditions, thereby extending the service life of the gas water heater, water pump, and electric heating tank. This method also ensures a stable temperature supply for users when using hot water, improving their comfort and satisfaction. This approach not only reduces noise generated by the gas water heater's operation but also achieves internal preheating. Furthermore, in cases where the water circuit of a gas water heater is long, this method can effectively prevent users from experiencing scalding or cold water during the second boiling point.

[0213] Figure 3 The process of the inner circulation preheating method based on electric heating provided in the embodiment Figure 3 The execution subject of this embodiment may be, for example, a processor of a gas water heater. Figure 3 As shown, this embodiment is in Figure 2 Based on the embodiment, the implementation process of stopping the heating function of the electric heating tank is described in detail. The internal circulation preheating method based on electric heating provided in this embodiment includes:

[0214] S301: Acquire the third information of the electric heating tank and the fourth information of the internal circulation pipeline in real time, wherein the third information includes: the pre-tank temperature and the third post-tank temperature of the electric heating tank, and the fourth information includes: the third water flow rate of the internal circulation pipeline.

[0215] The "tank front temperature" is the temperature of the water flowing through the water inlet of the electric heating tank when the electric heating tank is in the heating function. The "tank back temperature" is the temperature of the water flowing through the water outlet of the electric heating tank when the electric heating tank is in the heating function. The "water flow rate" is the water flow information flowing through the water outlet of the electric heating tank when the water pump is turned on, such as water pressure, water flow velocity, or water temperature.

[0216] The third information of the electric heating tank and the fourth information of the electric heating tank are obtained when the electric heating tank runs a heating function.

[0217] By obtaining the third information of the electric heating tank, not only the water temperature flowing through the water inlet of the electric heating tank when the electric heating tank is in the heating function can be obtained, but also the water temperature flowing through the water outlet of the electric heating tank when the electric heating tank is in the heating function can be obtained, so as to jointly determine whether the electric heating tank has effectively preheated the water temperature flowing through the electric heating tank based on the temperature before the tank and the temperature after the tank.

[0218] By obtaining the fourth information of the inner circulation pipeline, it means that the water flow information flowing from the water pump into the inner circulation pipeline when the water inlet function of the water pump is turned on can be obtained.

[0219] Since it is necessary to obtain the third information of the electric heating tank and the fourth information of the internal circulation pipeline, different acquisition factors and different acquisition methods can be determined. For example, when the acquisition factor is the third information, it can be obtained through a temperature sensor or from the display device of the gas water heater.

[0220] When the acquisition factor is the fourth information, it may be acquired through a pressure sensor or a speed sensor, for example.

[0221] S302: Obtain the running time of the heating function.

[0222] The operating time is the operating time of the heating function of the electric heating tank.

[0223] By obtaining the operating time of the heating function, it means that the length of time the electric heating tank operates the heating function can be obtained.

[0224] The operating time of the heating function can be obtained, for example, by querying an internal timer of the electric heating tank, or by monitoring the state changes of the electric heating tank to determine the operating time of the heating function, or by querying the event log records of the electric heating tank. This application does not impose any special restrictions on this.

[0225] S303: Determine whether the running time reaches a second preset time; if so, execute step S304; if not, execute step S305.

[0226] The second preset duration refers to the length of time the electric heating tank needs to perform the heating function. The second preset duration is usually set based on various factors, such as the capacity of the electric heating tank, thermal efficiency, target temperature, safety considerations, etc.

[0227] The purpose of judging whether the running time of the heating function reaches the second preset time is to determine whether the time for the electric heating tank to perform the heating function reaches the preset heating time.

[0228] If the running time of the heating function reaches the second preset time, it means that the time the electric heating tank performs the heating function reaches the preset heating time. At this time, it can be determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0229] If the running time of the heating function does not reach the second preset time, it indicates that the time for the electric heating tank to perform the heating function does not reach the preset heating time. At this time, the water outlet temperature of the gas water heater can be obtained.

[0230] S304: Determine whether the gas water heater meets the heating stop condition of the electric heating tank.

[0231] Among them, when it is determined that the operating time of the heating function reaches the second preset time, it means that the gas water heater meets the heating stop condition of the electric heating tank. At this time, the heating function of the electric heating tank can be stopped.

[0232] As you can understand, controlling the duration of the heating function can avoid unnecessary heating, thereby reducing energy consumption. However, prolonged heating can also cause the gas water heater to overheat, increasing the risk of malfunction or safety incidents. Therefore, by stopping the heating function promptly, the risk of overheating can be reduced, improving overall gas water heater safety.

[0233] S305: Obtain the outlet water temperature of the gas water heater in real time.

[0234] Among them, the water outlet temperature of the gas water heater refers to the water temperature of the water flowing out of the internal circulation pipeline after being heated by the electric heating tank.

[0235] By obtaining the outlet water temperature of the gas water heater, it is possible to obtain the water temperature of the water sprayed out from the water-using equipment connected to the gas water heater after being heated by the electric heating tank.

[0236] The outlet water temperature of the gas water heater may be obtained, for example, by a temperature sensor, an infrared thermometer, or a remote sensor, and this application does not impose any particular restrictions on this.

[0237] S306: When at least one of the following conditions is met, it is determined that the gas water heater meets the heating stop condition of the electric heating tank: A) the weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to the first preset temperature; B) the temperature after the third tank is greater than or equal to the second preset temperature, and the second preset temperature is less than the first preset temperature; C) the water outlet temperature is greater than or equal to the third preset temperature, and the water outlet temperature is obtained after running the heating function for the second preset time; D) the third water flow rate is less than the third preset water flow rate; E) it is determined that there is user water use behavior.

[0238] Because gas water heaters consist of multiple interconnected components, such as the electric heating tank, water pump, and internal circulation piping, these components interact in complex ways. For example, the water flow in the internal circulation piping affects the operating status of the water pump, while changes in the pump's head and flow rate can in turn affect the flow of water in the internal circulation piping. Therefore, when the electric heating tank's heating function is activated and running, these interconnected components may directly or indirectly affect the heating function, causing it to fail to maintain continuous heating.

[0239] In order to determine whether the electric heating tank meets the heating stop condition, multiple factors need to be considered, including the temperature before the tank, the temperature after the third tank, the third water flow rate, and the water outlet temperature. Therefore, when at least one of the following conditions is met, it can be considered that the gas water heater meets the heating stop condition of the electric heating tank:

[0240] A) The weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to the first preset temperature.

[0241] The first preset temperature refers to the target temperature that the user expects the electric heating tank to reach.

[0242] The purpose of judging whether the weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to the first preset temperature is to determine whether the overall operating temperature of the gas water heater is within a safe temperature range.

[0243] It can be understood that the average temperature is obtained by weighting the temperature of the water flowing through the electric heating tank before and after the heating function is turned on. Specifically, by combining the weighted average of the temperature before the tank and the temperature after the third tank, the temperature changes of the water before and after passing through the electric heating tank can be comprehensively considered to more accurately assess the final temperature state of the water flow.

[0244] If the weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to the first preset temperature, it indicates that the overall operating temperature of the gas water heater is not within the safe temperature range. At this time, it can be determined that the gas water heater meets the heating stop conditions of the electric heating tank.

[0245] If the weighted average of the temperature before the tank and the temperature after the third tank is not greater than or equal to the first preset temperature, it indicates that the overall operating temperature of the gas water heater is within a safe temperature range. At this time, it is possible to re-determine whether the weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to the first preset temperature.

[0246] B) The temperature after the third tank is greater than or equal to the second preset temperature.

[0247] Among them, the second preset temperature refers to the temperature point at which the heating function will automatically stop when the water temperature heated by the electric heating tank reaches the temperature required by the user.

[0248] It can be understood that the second preset temperature is determined by subtracting a preset difference from the heating set temperature of the electric heating tank.

[0249] The purpose of judging whether the temperature after the third tank is greater than or equal to the second preset temperature is to determine whether the temperature inside the electric heating tank reaches the heating set temperature minus the preset difference.

[0250] If the temperature after the third tank is greater than or equal to the second preset temperature, it indicates that the temperature inside the electric heating tank reaches the heating set temperature minus the preset difference. At this time, it can be determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0251] If the temperature after the third tank is not greater than or equal to the second preset temperature, it indicates that the temperature inside the electric heating tank has not reached the heating set temperature minus the preset difference. At this time, it is possible to re-judge whether the temperature after the third tank is greater than or equal to the second preset temperature.

[0252] It can be understood that by comprehensively considering the temperature after the third tank and the second preset temperature, the heating function of the electric heating tank can be stopped in time after reaching the target temperature set by the user, avoiding overheating or energy waste, thereby balancing the performance of the gas water heater and the comfort of the user, and ensuring the effective use of energy and the normal operation of the gas water heater.

[0253] C) The water outlet temperature is greater than or equal to the third preset temperature.

[0254] The third preset temperature is used to indicate the water temperature that can be used by the user.

[0255] The purpose of judging whether the water temperature is greater than or equal to the third temperature is to determine whether the water temperature of the water sprayed by the water-using equipment connected to the gas water heater can be used by the user.

[0256] It can be understood that by comprehensively considering the water outlet temperature and the third preset temperature, it can be ensured that the water sprayed from the water-using equipment connected to the gas water heater (such as shower heads, washbasin faucets, etc.) is of appropriate temperature and will not be overheated or overcooled, so that it can be used safely and comfortably by users.

[0257] If the outlet water temperature is greater than or equal to the third temperature, it indicates that the water temperature of the water sprayed by the water-using equipment connected to the gas water heater can be used by the user. At this time, it can be determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0258] If the outlet water temperature is not greater than or equal to the third temperature, it indicates that the water temperature sprayed from the water-using equipment connected to the gas water heater cannot be used by the user. At this time, it can be re-determined whether the outlet water temperature is greater than or equal to the third temperature.

[0259] D) The third water flow rate is less than the third preset water flow rate.

[0260] The purpose of judging whether the third water flow rate is less than the third preset water flow rate is to determine whether the water flow velocity is small when the water pump is in the starting state.

[0261] Understandably, too little water flow means less efficient heat transfer. Gas water heater designs typically optimize heating efficiency based on a specific water flow rate. If the water flow rate is too low, heat may not be effectively transferred to the water, resulting in wasted energy and reduced heating efficiency. Disabling the heating function can prevent unnecessary energy waste.

[0262] In addition, if the water flow is too small, even if the heating function continues to work, the user may not get a satisfactory hot water experience.

[0263] If the third water flow rate is less than the third preset water flow rate, it indicates that the water flow rate when the water pump is in the starting state is small. At this time, it can be determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0264] If the third water flow rate is not less than the third preset water flow rate, it indicates that the water flow rate is appropriate when the water pump is in the starting state. At this time, it can be re-determined whether the third water flow rate is less than the third preset water flow rate.

[0265] E) Detection of user water usage behavior.

[0266] Among them, the user's water use behavior is used to instruct the user to turn on the water use equipment connected to the gas water heater and start using hot water.

[0267] The purpose of detecting whether there is water usage by the user is to determine whether the flowing water needs to be further heated.

[0268] Understandably, user water use refers to the act of drawing hot water from a gas water heater by some means (such as turning on a faucet or operating other water-using devices). If the electric heating tank continues to heat at this time, the outlet water temperature may be too high, exceeding the user's desired range. Therefore, stopping heating can help adjust the outlet water temperature to a more appropriate level.

[0269] If it is detected that a user is using water, it indicates that there is no need to continue heating the water flowing through it. At this time, it can be determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0270] If it is detected that there is no user water usage, it indicates that the flowing water needs to continue to be heated. At this time, it can be determined that the gas water heater still meets the electric heating conditions of the electric heating tank.

[0271] Optionally, when determining whether the electric heating tank meets the heating stop condition, in addition to the above-mentioned cases, any other cases may also be included. Specifically:

[0272] 1) At the minimum state of the preset time period, the outlet water temperature lasts for a duration greater than or equal to the fourth preset temperature.

[0273] The minimum state of the preset time period is used to indicate that the gas water heater is in a low power mode, and the fourth preset temperature may be 51 degrees Celsius, for example.

[0274] The purpose of judging whether the duration of the outlet water temperature being greater than or equal to the fourth preset temperature under the minimum state of the preset time period is to determine whether the heating function of the electric heating tank needs to be used.

[0275] If the outlet water temperature lasts for a duration greater than or equal to the fourth preset temperature under the minimum state of the preset time period, it indicates that the heating function of the electric heating tank is not needed. At this time, it can be determined that the gas water heater meets the heating stop conditions of the electric heating tank.

[0276] If the duration of the water outlet temperature at the minimum state of the preset time period is not greater than or equal to the fourth preset temperature, it indicates that the heating function of the electric heating tank needs to be used. At this time, it can be determined that the gas water heater still meets the electric heating conditions of the electric heating tank.

[0277] 2) If the gas water heater fails.

[0278] Among them, when the gas water heater fails, for safety and equipment protection reasons, the heating function of the electric heating tank will be stopped immediately to prevent the fault from expanding or causing further damage.

[0279] For example, if a user encounters a gas leak while using a gas water heater, the heating function of the electric heating tank will be immediately stopped because gas leaks are a serious safety hazard that can lead to fires, explosions, and other serious consequences if not addressed in a timely manner.

[0280] 3) The inner loop execution time exceeds the preset inner loop execution time.

[0281] The internal circulation execution time is used to indicate the length of time water flows in the internal circulation pipeline. The preset internal circulation execution time is used to indicate the length of time it takes for the internal circulation pipeline to complete a complete heating cycle. The preset internal circulation execution time can be, for example, 3 minutes.

[0282] The purpose of judging whether the inner loop execution time exceeds the preset inner loop execution time is to determine whether the inner loop pipeline operates normally.

[0283] Understandably, the proper functioning of the internal circulation piping is essential for ensuring the effective operation of gas water heaters and the safety of users. Abnormal circulation in the internal circulation piping can lead to reduced heating efficiency, unstable water temperature, and overheating. Therefore, by comprehensively considering the internal circulation execution time and the preset internal circulation execution time, the operation of the internal circulation piping can be accurately monitored to prevent abnormalities in the gas water heater.

[0284] If the internal circulation execution time exceeds the preset internal circulation execution time, it indicates that the internal circulation pipeline is not operating normally. At this time, it can be determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0285] If the inner loop execution time does not exceed the preset inner loop execution time, it indicates that the inner loop pipeline is operating normally. At this time, it is possible to re-judge whether the inner loop execution time exceeds the preset inner loop execution time.

[0286] The electric heating-based internal circulation preheating method provided in this embodiment, after obtaining the third information of the electric heating tank, the fourth information of the internal circulation pipeline, and the actual operating time of the heating function, if it is determined that the operating time of the heating function has not reached the preset second time, can continue to monitor the outlet water temperature of the gas water heater. By comprehensively considering multiple parameters, such as the pre-tank temperature of the electric heating tank, the third post-tank temperature, the third water flow rate of the internal circulation pipeline, and the real-time outlet water temperature of the gas water heater, it can more accurately determine whether the conditions for stopping heating of the electric heating tank are met. Once these parameters indicate that heating is sufficient or no longer required, the system will accordingly stop the heating function of the electric heating tank.

[0287] By comprehensively considering multiple parameters, such as the temperature before the electric heating tank, the temperature after the third tank, the third water flow rate in the internal circulation pipeline, and the real-time water outlet temperature of the gas water heater, this method can more accurately determine whether the electric heating tank needs to continue heating, thereby improving the response speed of the gas water heater and enabling it to operate more efficiently. At the same time, this method also reduces the heat load and wear of the gas water heater, thereby extending the service life of the gas water heater and the electric heating tank.

[0288] Figure 4 This is a schematic diagram of the structure of the internal circulation preheating device based on electric heating provided in this application. Figure 4 As shown, the present application provides an internal circulation preheating device based on electric heating, and the internal circulation preheating device based on electric heating 400 includes:

[0289] An acquisition module 401 is configured to acquire first information of the electric heating tank and second information of the internal circulation pipeline in real time;

[0290] A determination module 402 is configured to determine whether the gas water heater meets the electric heating condition of the electric heating tank based on the first information and the second information;

[0291] The control module 403 is used to control the electric heating tank to run the heating function to preheat the water in the internal circulation pipeline when it is determined that the gas water heater meets the electric heating conditions of the electric heating tank.

[0292] Optionally, the device further includes: a judgment module 404;

[0293] The judgment module 404 is used to judge whether the first water flow rate reaches a first preset water flow rate and whether the first tank temperature is less than or equal to a preheating temperature;

[0294] The determination module 402 is specifically configured to determine that the gas water heater meets the electric heating condition of the electric heating tank when the first water flow rate reaches the first preset water flow rate and the first post-tank temperature is less than or equal to the preheating temperature.

[0295] Optionally, the acquisition module 401 is further configured to acquire the previous water usage information of the gas water heater, the previous water usage information including: the end time of the previous water usage and the duration of the previous water usage;

[0296] The judgment module 404 is further configured to judge whether the duration of the previous water use reaches a first preset duration when the previous water use end time and the current time meet a preset condition;

[0297] The judgment module 404 is further configured to, when the previous water use duration reaches a first preset duration, determine whether the second water flow rate is less than a second preset water flow rate and whether the second tank temperature is less than or equal to the preheating temperature, wherein the second water flow rate is the water flow rate in the internal circulation pipeline when the water pump is not turned on, the first water flow rate is the water flow rate in the internal circulation pipeline when the water pump is turned on, and the second water flow rate is less than the first water flow rate;

[0298] The determining module 402 is further configured to determine that the gas water heater meets a water pump start-up condition of the internal circulation pipeline when the second water flow rate is less than the second preset water flow rate and the second after-tank temperature is less than or equal to the preheating temperature;

[0299] The determining whether the first water flow rate reaches a first preset water flow rate and whether the first post-tank temperature is less than or equal to a preheating temperature includes:

[0300] The judgment module 404 is specifically used to judge whether the first water flow rate reaches a first preset water flow rate and whether the first tank rear temperature is less than or equal to the preheating temperature when it is determined that the gas water heater meets the water pump start-up condition of the internal circulation pipeline.

[0301] Optionally, the acquisition module 401 is further configured to acquire in real time third information of the electric heating tank and fourth information of the internal circulation pipeline, wherein the third information and the fourth information are acquired when the electric heating tank operates a heating function;

[0302] The determining module 402 is further configured to determine whether the gas water heater satisfies a heating stop condition of the electric heating tank based on the third information and the fourth information;

[0303] The control module 403 is specifically configured to control the electric heating tank to stop running the heating function when it is determined that the gas water heater meets the heating stop condition of the electric heating tank.

[0304] Optionally, the acquisition module 401 is further configured to acquire the operating time of the heating function and determine whether the operating time reaches a second preset time;

[0305] The determining module 402 is specifically configured to determine that the gas water heater meets the heating stop condition of the electric heating tank when the operating time reaches the second preset time;

[0306] The acquisition module 401 is further configured to acquire the outlet water temperature of the gas water heater in real time when the operating time does not reach the second preset time;

[0307] The determination module 402 is specifically used to determine whether the gas water heater meets the heating stop condition of the electric heating tank based on the pre-tank temperature, the third post-tank temperature, the third water flow rate and the outlet water temperature.

[0308] Optionally, the determining module 402 is further configured to determine whether the gas water heater meets the heating stop condition of the electric heating tank when at least one of the following conditions is met:

[0309] A) a weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to a first preset temperature;

[0310] B) the temperature after the third tank is greater than or equal to a second preset temperature, and the second preset temperature is less than the first preset temperature;

[0311] C) the outlet water temperature is greater than or equal to a third preset temperature, and the outlet water temperature is obtained after the heating function is operated for a second preset time period;

[0312] D) the third water flow rate is less than a third preset water flow rate;

[0313] E) Determine whether there is water use behavior by the user.

[0314] Optionally, the acquisition module 401 is further configured to acquire the first information of the electric heating tank and the second information of the internal circulation pipeline in real time when it is determined that the current moment is within a preset time period corresponding to the fixed-point zero cold water;

[0315] The apparatus further comprises: a detection module 405;

[0316] The detection module 405 is configured to detect whether there is a user in a preset area when it is determined that the current time is not within a preset time period corresponding to the fixed-point zero cold water supply. The preset area is a preset area corresponding to a target device, and the target device is a device that has a water supply relationship with the gas water heater.

[0317] The acquisition module 401 is further configured to acquire the first information of the electric heating tank and the second information of the internal circulation pipeline in real time when it is determined that there is a user in the preset area.

[0318] Figure 5 This is a schematic diagram of the structure of the internal circulation preheating device based on electric heating provided in this application. Figure 5 As shown, the present application provides an internal circulation preheating device based on electric heating, and the internal circulation preheating device based on electric heating 500 includes: a receiver 501, a transmitter 502, a processor 503 and a memory 504.

[0319] Receiver 501, for receiving instructions and data;

[0320] Transmitter 502, used to send instructions and data;

[0321] Memory 504, for storing computer-executable instructions;

[0322] The processor 503 is configured to execute computer-executable instructions stored in the memory 504 to implement the various steps of the internal circulation preheating method based on electric heating in the above embodiment. For details, please refer to the relevant description in the above embodiment of the internal circulation preheating method based on electric heating.

[0323] Optionally, the memory 504 may be independent or integrated with the processor 503 .

[0324] When the memory 504 is independently provided, the electronic device further includes a bus for connecting the memory 504 and the processor 503 .

[0325] The present application also provides a computer-readable storage medium, which stores computer-executable instructions. When a processor executes the computer-executable instructions, it implements the electric heating-based internal circulation preheating method performed by the above-mentioned electric heating-based internal circulation preheating device.

[0326] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As is well known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable, and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those skilled in the art that communication media generally embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0327] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the scope of protection of the present application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An internal circulation preheating method based on electric heating, characterized in that: Applied to a gas water heater, the gas water heater includes: an electric heating tank and an internal circulation pipeline, the electric heating tank and the internal circulation pipeline are connected in series, the method includes: Acquiring first information of the electric heating tank and second information of the internal circulation pipeline in real time; determining, based on the first information and the second information, whether the gas water heater meets the electric heating conditions of the electric heating tank; When it is determined that the gas water heater meets the electric heating condition of the electric heating tank, the electric heating tank is controlled to run a heating function to preheat the water in the inner circulation pipeline.

2. The method according to claim 1, characterized in that The first information includes: a first after-tank temperature of the electric heating tank; the second information includes: a first water flow rate of the internal circulation pipeline; and determining whether the gas water heater meets the electric heating condition of the electric heating tank based on the first information and the second information includes: determining whether the first water flow rate reaches a first preset water flow rate and whether the first tank rear temperature is less than or equal to a preheating temperature; When the first water flow rate reaches the first preset water flow rate and the first post-tank temperature is less than or equal to the preheating temperature, it is determined that the gas water heater meets the electric heating condition of the electric heating tank.

3. The method according to claim 2, characterized in that The first information includes: a second tank temperature; the second information includes: a second water flow rate; and before determining whether the first water flow rate reaches a first preset water flow rate and whether the first tank temperature is less than or equal to a preheating temperature, the method further includes: Acquire the last water use information of the gas water heater, wherein the last water use information includes: the end time of the last water use and the last water use duration; When the end time of the previous water use and the current time meet the preset conditions, determining whether the duration of the previous water use reaches a first preset duration; If so, determining whether the second water flow rate is less than a second preset water flow rate and whether the second post-tank temperature is less than or equal to the preheating temperature, wherein the second water flow rate is the water flow rate in the internal circulation pipeline when the water pump is not turned on, the first water flow rate is the water flow rate in the internal circulation pipeline when the water pump is turned on, and the second water flow rate is less than the first water flow rate; When the second water flow rate is less than the second preset water flow rate and the second after-tank temperature is less than or equal to the preheating temperature, determining that the gas water heater meets the water pump start-up condition of the internal circulation pipeline; The determining whether the first water flow rate reaches a first preset water flow rate and whether the first post-tank temperature is less than or equal to a preheating temperature includes: When it is determined that the gas water heater meets the water pump start-up condition of the internal circulation pipeline, it is determined whether the first water flow rate reaches a first preset water flow rate and whether the first tank rear temperature is less than or equal to the preheating temperature.

4. The method according to claim 1, wherein The method further comprises: Acquire third information of the electric heating tank and fourth information of the internal circulation pipeline in real time, wherein the third information and the fourth information are acquired when the electric heating tank operates a heating function; determining, based on the third information and the fourth information, whether the gas water heater satisfies a heating stop condition of the electric heating tank; When it is determined that the gas water heater meets the heating stop condition of the electric heating tank, the electric heating tank is controlled to stop running the heating function.

5. The method according to claim 4, characterized in that The third information includes: the pre-tank temperature and the third post-tank temperature of the electric heating tank; the fourth information includes: the third water flow rate of the internal circulation pipeline; and determining whether the gas water heater meets the heating stop condition of the electric heating tank based on the third information and the fourth information includes: Obtaining the operating time of the heating function, and determining whether the operating time reaches a second preset time; When the running time reaches the second preset time, determining that the gas water heater meets the heating stop condition of the electric heating tank; When the operating time does not reach the second preset time, the water outlet temperature of the gas water heater is obtained in real time, and based on the temperature before the tank, the temperature after the third tank, the third water flow rate and the water outlet temperature, it is determined whether the gas water heater meets the heating stop condition of the electric heating tank.

6. The method according to claim 5, characterized in that When at least one of the following conditions is met, it is determined that the gas water heater meets the heating stop condition of the electric heating tank: A) a weighted average of the temperature before the tank and the temperature after the third tank is greater than or equal to a first preset temperature; B) the temperature after the third tank is greater than or equal to a second preset temperature, and the second preset temperature is less than the first preset temperature; C) the outlet water temperature is greater than or equal to a third preset temperature, and the outlet water temperature is obtained after the heating function is operated for a second preset time period; D) the third water flow rate is less than a third preset water flow rate; E) Determine whether there is water use behavior by the user.

7. The method according to claim 1, characterized in that The real-time acquisition of the first information of the electric heating tank and the second information of the internal circulation pipeline includes: When it is determined that the current moment is within a preset time period corresponding to the fixed-point zero cold water, first information of the electric heating tank and second information of the internal circulation pipeline are acquired in real time; When it is determined that the current moment is not within the preset time period corresponding to the fixed-point zero cold water, detecting whether there is a user in a preset area, the preset area being a preset area corresponding to a target device, and the target device being a device that has a water supply relationship with the gas water heater; When it is determined that there is a user in the preset area, the first information of the electric heating tank and the second information of the internal circulation pipeline are acquired in real time.

8. An internal circulation preheating device based on electric heating, characterized in that: include: an acquisition module, configured to acquire first information of the electric heating tank and second information of the internal circulation pipeline in real time; a determination module, configured to determine whether the gas water heater meets the electric heating condition of the electric heating tank according to the first information and the second information; The control module is used to control the electric heating tank to run a heating function to preheat the water in the inner circulation pipeline when it is determined that the gas water heater meets the electric heating conditions of the electric heating tank.

9. An internal circulation preheating device based on electric heating, characterized in that: include: Memory; processor; wherein the memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the inner-circulation preheating method based on electric heating according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the inner-circulation preheating method based on electric heating as described in any one of claims 1 to 7.

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