Solar water heater and heating control method of solar water heater

Abstract

The invention belongs to the field of intelligent household appliances, and particularly relates to a solar water heater and a heating control method of the solar water heater. Firstly, the first water temperature of the hot water container and the second water temperature of the warm water container are obtained, and then a corresponding heating strategy is adopted according to the two temperature values: when the first water temperature is smaller than or equal to the first preset temperature, heat circulation between the heat collector and the hot water container is controlled so as to rapidly increase the water temperature of the hot water container, and it is ensured that a user can enjoy warm and comfortable hot water; when the first water temperature is larger than the first preset temperature, but the second water temperature is smaller than or equal to the first preset temperature, heat circulation between the heat collector and the warm water container is controlled, so that the water temperature of the warm water container is rapidly increased, standby hot water can be stored, and the balance effect can be achieved when the water temperature of the hot water container is too high. The method effectively solves the problems that an existing solar water heater is unstable in water temperature and poor in user experience under adverse natural conditions, and continuous stability of the water temperature and comfortable experience of a user are ensured.

Description

Technical Field

[0001] This application belongs to the field of smart home appliances, specifically relating to a solar water heater and a heating control method for the solar water heater. Background Technology

[0002] With the rapid development of science and technology and the increasing awareness of environmental protection, solar water heaters, as an important representative of green energy applications, have seen significant improvements in both their technological level and market share. Solar water heaters convert solar radiation energy into heat energy through their collectors, thereby heating water and achieving efficient energy utilization and environmentally friendly protection.

[0003] However, although solar water heaters can operate efficiently and provide an ample supply of hot water, their water temperature stability is significantly affected by natural environmental conditions. For example, when solar irradiance decreases, such as during cloudy or rainy weather or winter, the thermal conversion efficiency of solar water heaters drops sharply, causing the water temperature to fail to reach the comfortable or practical level required by the user.

[0004] Therefore, existing solar water heaters cannot guarantee water temperature stability under unfavorable natural environmental conditions, resulting in a poor user experience. Summary of the Invention

[0005] This application provides a solar water heater and a heating control method for the solar water heater, which solves the problem that existing solar water heaters cannot guarantee water temperature stability under unfavorable natural environmental conditions, resulting in a poor user experience.

[0006] In a first aspect, this application provides a heating control method for a solar water heater, the solar water heater comprising a hot water tank, a warm water tank, and a collector, including:

[0007] Obtain the first water temperature of the hot water tank and the second water temperature of the warm water tank;

[0008] When the first water temperature is less than or equal to the first preset temperature, the heat collector and the hot water tank are controlled to circulate heat.

[0009] When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, the collector and the warm water tank are controlled to circulate heat.

[0010] Optionally, the method further includes:

[0011] When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, the collector and the hot water tank are controlled to circulate heat.

[0012] When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, the collector and the warm water tank are controlled to circulate heat.

[0013] The upper limit of the preset range is the second preset temperature, and the lower limit of the preset range is the first preset temperature.

[0014] Optionally, the method further includes:

[0015] When both the first water temperature and the second water temperature are within a preset range, the heat collector and the hot water tank are controlled to circulate heat, and the heat collector and the warm water tank are controlled to circulate heat.

[0016] Optionally, the method further includes:

[0017] When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the heat circulation between the collector and the hot water tank is stopped, and the heat circulation between the collector and the warm water tank is also stopped.

[0018] Optionally, the solar water heater further includes a thermostatic valve, wherein the first port of the thermostatic valve is connected to the collector, the third port of the thermostatic valve is connected to the warm water tank, and the second port of the thermostatic valve is connected to the hot water tank.

[0019] When the first water temperature is less than or equal to the first preset temperature, controlling the heat collector and the hot water tank to perform heat circulation specifically includes:

[0020] When the first water temperature is less than or equal to the first preset temperature, the first interface of the temperature control valve is connected to the second interface of the temperature control valve.

[0021] When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0022] When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

[0023] Optionally, when both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, heat circulation is controlled between the solar collector and the hot water tank, specifically including:

[0024] When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, the first interface of the temperature control valve is connected to the second interface of the temperature control valve.

[0025] Accordingly, when both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0026] When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

[0027] Optionally, when both the first water temperature and the second water temperature are within a preset range, heat circulation is controlled between the solar collector and the hot water tank, and heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0028] When both the first water temperature and the second water temperature are within a preset range, the first interface of the temperature control valve is connected to the second interface of the temperature control valve, and the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

[0029] When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the heat circulation between the solar collector and the warm water tank is stopped, specifically including:

[0030] When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the first interface of the temperature control valve is disconnected from the second interface of the temperature control valve, and the first interface of the temperature control valve is disconnected from the third interface of the temperature control valve.

[0031] Optionally, the solar water heater further includes an electric heating module located in the hot water tank, and the method further includes:

[0032] When the water temperature in the hot water tank remains below the third preset temperature for a period of time longer than a preset time, the electric heating module is activated.

[0033] The electric heating module is turned on in response to an external start command.

[0034] Secondly, this application provides a solar water heater, including a collector, a warm water tank, a hot water tank, and a heating control device, wherein the heating control device is used to execute the heating control method of the first aspect.

[0035] Optionally, the water heater further includes a thermostatic valve and an electric heating module. The first interface of the thermostatic valve is connected to the solar collector, the second interface of the thermostatic valve is connected to the hot water tank, the third interface of the thermostatic valve is connected to the warm water tank, and the electric heating module is located in the hot water tank.

[0036] Thirdly, this application provides a heating control device for a solar water heater, comprising:

[0037] The acquisition module is used to acquire the first water temperature of the hot water tank and the second water temperature of the warm water tank;

[0038] The control module is used to control the heat circulation between the solar collector and the hot water tank when the first water temperature is less than or equal to the first preset temperature.

[0039] The control module is further configured to control the heat collector and the warm water tank to perform heat circulation when the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature.

[0040] Optionally, the control module is further configured to control the heat collector and the hot water tank to perform heat circulation when both the first water temperature and the second water temperature are within a preset range and the difference between the first water temperature and the second water temperature is less than a preset threshold.

[0041] The control module is also used to control the heat collector and the warm water tank to perform heat circulation when the first water temperature and the second water temperature are both within a preset range and the difference between the first water temperature and the second water temperature is greater than a preset threshold.

[0042] The upper limit of the preset range is the second preset temperature, and the lower limit of the preset range is the first preset temperature.

[0043] Optionally, the control module is further configured to control the heat circulation between the solar collector and the hot water tank when both the first water temperature and the second water temperature are within a preset range, and to control the heat circulation between the solar collector and the warm water tank.

[0044] Optionally, the control module is further configured to control the heat collector to stop the heat circulation between the hot water tank and the water heater when the first water temperature is greater than the second preset temperature and the second water temperature is greater than the second preset temperature, and to control the heat collector to stop the heat circulation between the hot water tank and the water heater.

[0045] Optionally, the solar water heater further includes a thermostatic valve, wherein the first port of the thermostatic valve is connected to the collector, the third port of the thermostatic valve is connected to the warm water tank, and the second port of the thermostatic valve is connected to the hot water tank.

[0046] When the first water temperature is less than or equal to the first preset temperature, controlling the heat collector and the hot water tank to perform heat circulation specifically includes:

[0047] The control module is specifically used to control the first interface of the temperature control valve to connect to the second interface of the temperature control valve when the first water temperature is less than or equal to the first preset temperature.

[0048] When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0049] The control module is specifically used to connect the first interface of the temperature control valve to the third interface of the temperature control valve when the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature.

[0050] Optionally, when both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, heat circulation is controlled between the solar collector and the hot water tank, specifically including:

[0051] The control module is specifically used to connect the first interface of the temperature control valve to the second interface of the temperature control valve when both the first water temperature and the second water temperature are within a preset range and the difference between the first water temperature and the second water temperature is less than a preset threshold.

[0052] Accordingly, when both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0053] The control module is specifically used to connect the first interface of the temperature control valve to the third interface of the temperature control valve when both the first water temperature and the second water temperature are within a preset range and the difference between the first water temperature and the second water temperature is greater than a preset threshold.

[0054] Optionally, when both the first water temperature and the second water temperature are within a preset range, heat circulation is controlled between the solar collector and the hot water tank, and heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0055] The control module is specifically used to connect the first interface of the temperature control valve to the second interface of the temperature control valve and to the third interface of the temperature control valve when both the first water temperature and the second water temperature are within a preset range.

[0056] When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the heat circulation between the solar collector and the warm water tank is stopped, specifically including:

[0057] The control module is specifically used to disconnect the first interface of the temperature control valve from the second interface of the temperature control valve and to disconnect the first interface of the temperature control valve from the third interface of the temperature control valve when the first water temperature is greater than the second preset temperature and the second water temperature is greater than the second preset temperature.

[0058] Optionally, the solar water heater further includes an electric heating module located in the hot water tank, and the device further includes a start-up module;

[0059] The start-up module is used to activate the electric heating module when the water temperature in the hot water tank is lower than the third preset temperature for a period of time that is greater than a preset time.

[0060] The start-up module is also used to turn on the electric heating module in response to an external start-up command.

[0061] Fourthly, this application provides a heating control device for a solar water heater, comprising:

[0062] Memory;

[0063] processor;

[0064] The memory stores computer-executed instructions;

[0065] The processor executes computer execution instructions stored in the memory to implement the heating control method for a solar water heater as described in the first aspect and various possible implementations thereof.

[0066] Fifthly, this application provides a computer storage medium storing computer execution instructions thereon, which are executed by a processor to implement the heating control method for a solar water heater as described in the first aspect and various possible implementations thereof.

[0067] Sixthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the heating control method for a solar water heater as described above.

[0068] The heating control method for solar water heaters provided in this application first obtains the first water temperature of the hot water tank and the second water temperature of the warm water tank. Then, based on these two temperature values, a corresponding heating strategy is adopted: when the first water temperature is less than or equal to a first preset temperature, heat circulation is controlled between the collector and the hot water tank to quickly raise the water temperature of the hot water tank, ensuring that users can enjoy warm and comfortable hot water; conversely, when the first water temperature is greater than the first preset temperature, but the second water temperature is less than or equal to the first preset temperature, heat circulation is switched between the collector and the warm water tank to quickly raise the water temperature of the warm water tank. This not only stores backup hot water but also plays a balancing role when the water temperature of the hot water tank is too high. This method effectively solves the problems of unstable water temperature and poor user experience in existing solar water heaters under unfavorable natural conditions, ensuring continuous and stable water temperature and a comfortable user experience. Attached Figure Description

[0069] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0070] Figure 1 The flow chart of the heating control method for the solar water heater provided in this application Figure 1 ;

[0071] Figure 2 The flow chart of the heating control method for the solar water heater provided in this application Figure 2 ;

[0072] Figure 3 The flow chart of the heating control method for the solar water heater provided in this application Figure 3 ;

[0073] Figure 4 The structural diagram of the solar water heater provided in this application Figure 4 ;

[0074] Figure 5 A schematic diagram of the thermostatic valve structure of the solar water heater provided in this application. Figure 5 ;

[0075] Figure 6 This is a schematic diagram of the heating control device for the solar water heater provided in this application;

[0076] Figure 7 This is a schematic diagram of the heating control device for the solar water heater provided in this application.

[0077] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0078] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0079] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0080] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0081] In today's society, rapid technological advancements and a general increase in global environmental awareness have jointly driven the rapid development of green energy technologies. As an outstanding representative of this trend, solar water heaters, with their unique environmental advantages and efficient energy conversion capabilities, are gradually becoming the preferred solution for hot water supply in both residential and commercial sectors.

[0082] However, while solar water heaters provide an environmentally friendly and economical hot water solution, their water temperature stability is significantly affected by natural environmental conditions, making it impossible to consistently provide users with suitable water temperatures. Specifically, on sunny days, solar water heaters can effectively utilize solar radiation and convert it into heat energy, rapidly raising the water temperature to the ideal usable range. However, on cloudy or rainy days, or when solar radiation is significantly reduced, their ability to maintain water temperature is greatly diminished, often resulting in water temperatures failing to reach the user's desired comfortable or practical level, thus affecting the user experience and the stability of the hot water supply.

[0083] Therefore, existing solar water heaters cannot guarantee water temperature stability under unfavorable natural environmental conditions, resulting in a poor user experience.

[0084] To address the aforementioned problems, this application provides a heating control method for a solar water heater. First, the first water temperature in the hot water tank and the second water temperature in the warm water tank are obtained. Then, a corresponding heating strategy is adopted based on these two temperature values: when the first water temperature is less than or equal to a first preset temperature, heat circulation is controlled between the collector and the hot water tank to quickly raise the water temperature in the hot water tank, ensuring that the user can enjoy warm and comfortable hot water; conversely, when the first water temperature is greater than the first preset temperature, but the second water temperature is less than or equal to the first preset temperature, heat circulation is switched between the collector and the warm water tank to quickly raise the water temperature in the warm water tank. This not only stores backup hot water but also plays a balancing role when the water temperature in the hot water tank is too high. This method effectively solves the problems of unstable water temperature and poor user experience in existing solar water heaters under unfavorable natural conditions, ensuring continuous and stable water temperature and a comfortable user experience.

[0085] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0086] Figure 1 The flow chart of the heating control method for the solar water heater provided in this embodiment Figure 1 A solar water heater consists of a hot water tank, a warm water tank, and a collector. For example... Figure 1 As shown, the heating control method for a solar water heater provided in this embodiment includes:

[0087] S101: Obtain the first water temperature of the hot water tank and the second water temperature of the warm water tank.

[0088] The first water temperature of the hot water tank is used to indicate the water temperature stored in the hot water tank, and the second water temperature of the warm water tank is used to indicate the water temperature stored in the warm water tank.

[0089] The first water temperature can be, for example, 45℃ or 60℃. The second water temperature can be, for example, 20℃ or 45℃. This application does not impose any special restrictions on this.

[0090] By obtaining the first water temperature of the hot water tank and the second water temperature of the warm water tank, it can be shown that the internal water temperature of the two water storage containers, the hot water tank and the warm water tank, can be obtained under the current weather conditions.

[0091] Understandably, when the weather is favorable (e.g., plenty of sunshine and suitable temperature), solar water heaters can more effectively collect solar energy and convert it into heat energy, thereby heating the water in the hot water tank and the warm water tank, resulting in a relatively high water temperature in these two storage containers. Conversely, when the weather is unfavorable (e.g., continuous rain and low temperature), the collection efficiency of solar water heaters will decrease, leading to a relatively low water temperature in the hot water tank and the warm water tank.

[0092] Therefore, by obtaining the first water temperature of the hot water tank and the second water temperature of the warm water tank, we can obtain the first water temperature of the hot water tank and the second water temperature of the warm water tank under the current weather conditions.

[0093] The timing of this step can be, for example, real-time acquisition or acquisition according to a preset period. This application does not impose any special restrictions on this.

[0094] Different acquisition factors have different acquisition methods. For example, when the acquisition factor is the first water temperature of the hot water tank, it can be obtained through a temperature sensor built into the hot water tank, while when the acquisition factor is the second water temperature of the warm water tank, it can be obtained through a temperature sensor built into the warm water tank. This application does not impose any special limitations on this.

[0095] S102: When the first water temperature is less than or equal to the first preset temperature, control the heat collector and the hot water tank to perform heat circulation.

[0096] The first preset temperature is used to indicate the water temperature that needs to be heated. For example, the first preset temperature can be 55°C. This application does not impose any special limitations on this.

[0097] The purpose of determining whether the first water temperature of the hot water tank is less than or equal to the first preset temperature is to determine whether the water temperature stored inside the hot water tank is insufficient under the current weather conditions.

[0098] Understandably, the intensity of solar irradiance in weather conditions can affect the heating efficiency of solar water heaters. When solar irradiance is high (such as on a sunny day), the collector can more effectively collect solar energy and convert it into heat energy, thereby rapidly heating the water in the hot water tank and causing the water temperature to rise significantly. Conversely, when solar irradiance is low (such as on cloudy or rainy days or in the evening), the heating efficiency of the collector will decrease significantly, resulting in a slower rate of temperature rise in the hot water tank, and it may even fail to maintain or raise the water temperature to the user's desired level.

[0099] Therefore, by comparing the initial water temperature and the first preset temperature in the hot water tank, it is possible to accurately determine whether the water stored inside the tank can meet the user's hot water needs under the current weather conditions. If the initial water temperature is less than or equal to the first preset temperature, it indicates that the water temperature stored inside the tank is insufficient under the current weather conditions and cannot meet the user's immediate hot water needs.

[0100] If the first water temperature of the hot water tank is less than or equal to the first preset temperature, it indicates that the water temperature stored inside the hot water tank is insufficient under the current weather conditions. In this case, heat circulation between the collector and the hot water tank can be controlled.

[0101] Understandably, when the initial water temperature in the hot water tank is less than or equal to the first preset temperature, it indicates that the water temperature in the hot water tank is insufficient and may not meet the user's hot water needs. In this case, to increase the water temperature inside the hot water tank, heat circulation between the collector and the hot water tank will be controlled.

[0102] For example, assuming the first preset temperature is 55℃ and the first water temperature of the hot water tank is known to be 42℃, the control system of the solar water heater will control the heat circulation between the collector and the hot water tank based on this information.

[0103] S103: When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, control the heat collector to perform heat circulation between the heat exchanger and the warm water tank.

[0104] The purpose of determining whether the second water temperature of the warm water tank is less than or equal to the first preset temperature is to determine whether the water temperature stored inside the warm water tank is insufficient under the current weather conditions.

[0105] If the first water temperature of the hot water tank is greater than the first preset temperature, and the second water temperature of the warm water tank is less than or equal to the first preset temperature, it indicates that the water temperature stored inside the hot water tank is suitable under the current weather conditions, while the water temperature stored inside the warm water tank is insufficient. In this case, heat circulation can be controlled between the collector and the warm water tank.

[0106] Understandably, if the first water temperature in the hot water tank is determined to be higher than the first preset temperature, and the second water temperature in the warm water tank is also determined to be higher than the first preset temperature, it indicates that the water temperature in the hot water tank is suitable for the current weather conditions and sufficient to meet certain hot water usage needs. However, the water temperature in the warm water tank is relatively insufficient and may not be able to effectively balance the temperature difference between the hot and warm water tanks. In this case, to raise the water temperature in the warm water tank and achieve a more ideal balance, heat circulation will be controlled between the collector and the warm water tank.

[0107] For example, assuming the first preset temperature is 55℃, the first water temperature of the hot water tank is known to be 60℃, and the second water temperature of the warm water tank is known to be 20℃, then based on this information, the control system of the solar water heater will control the heat circulation between the collector and the warm water tank.

[0108] The heating control method for a solar water heater provided in this embodiment, after obtaining the first water temperature of the hot water tank and the second water temperature of the warm water tank, determines the working process of the collector based on the first and second water temperatures: when the first water temperature is less than or equal to a first preset temperature, heat circulation is controlled between the collector and the hot water tank to rapidly increase the water temperature of the hot water tank; when the first water temperature is greater than the first preset temperature but the second water temperature is lower than the first preset temperature, heat circulation is controlled between the collector and the warm water tank to store hot water and maintain a stable water temperature. This method effectively addresses the impact of adverse natural environmental conditions on water temperature stability, significantly improves the user experience, and solves the problem of large water temperature fluctuations and poor user experience in existing solar water heaters under complex environments.

[0109] Figure 2 The flow chart of the heating control method for the solar water heater provided in this embodiment Figure 2 .like Figure 2 As shown. This embodiment is... Figure 1 Based on this, the specific implementation process of heating control of solar water heaters is described in detail. The heating control method for solar water heaters provided in this embodiment includes:

[0110] S201: Obtain the first water temperature of the hot water tank and the second water temperature of the warm water tank.

[0111] The explanation of step S201 is similar to that of step S101, and will not be repeated here.

[0112] S202: Determine whether the first water temperature is less than or equal to the first preset temperature. If yes, proceed to step S203; otherwise, proceed to step S204.

[0113] The explanation of step S202 is the same as that in the above embodiments, and will not be repeated here.

[0114] S203: Control the heat circulation between the solar collector and the hot water tank.

[0115] The purpose of this step is to raise the water temperature inside the hot water tank.

[0116] When the first water temperature of the hot water tank is determined to be less than or equal to the first preset temperature, it means that the water in the hot water tank is insufficient to meet the user's hot water needs. At this time, in order to quickly restore or increase the water temperature of the hot water tank, heat circulation between the collector and the hot water tank will be controlled.

[0117] Understandably, during the heat cycle, the solar collector absorbs solar energy and converts it into heat energy. This heat energy is then transferred to the water in the hot water tank through the circulation pipes, causing the water temperature in the hot water tank to gradually rise, thereby meeting the user's hot water needs.

[0118] S204: Determine whether the second water temperature is less than or equal to the first preset temperature; if yes, proceed to step S205; if no, proceed to step S206.

[0119] The explanation of step S204 is the same as that in the above embodiments, and will not be repeated here.

[0120] S205: Control the heat circulation between the solar collector and the warm water tank.

[0121] The purpose of this step is to raise the water temperature inside the warm water tank.

[0122] Understandably, during the heat cycle, the solar collector absorbs solar energy and converts it into heat energy. This heat energy is then transferred to the water in the warm water tank through the circulation pipes, causing the water temperature in the warm water tank to gradually rise. This allows the water temperature in both tanks to be balanced while meeting the user's water needs.

[0123] S206: When both the first water temperature and the second water temperature are within a preset range, determine whether the difference between the first water temperature and the second water temperature is less than a preset threshold; if yes, proceed to step S203; if no, proceed to step S205.

[0124] The upper limit of the preset range is the second preset temperature, and the lower limit of the preset range is the first preset temperature. The second preset temperature can be, for example, 85℃. The preset range can be, for example, [55℃, 85℃]. The preset threshold can be, for example, 15℃. This application does not impose any special restrictions on this.

[0125] When it is determined that the first water temperature of the hot water tank and the second water temperature of the warm water tank are both within the preset range, the purpose of determining whether the difference between the first water temperature of the hot water tank and the second water temperature of the warm water tank is less than the preset threshold is to determine whether the water temperature of the hot water tank and the water temperature of the warm water tank are in a balanced state.

[0126] If the difference between the first water temperature of the hot water tank and the second water temperature of the warm water tank is less than the preset threshold, it indicates that the water temperature of the hot water tank and the warm water tank are in equilibrium. At this time, heat circulation between the collector and the hot water tank can be controlled.

[0127] Understandably, when the first water temperature of the hot water tank and the second water temperature of the warm water tank are determined to be in equilibrium, it means that the water temperature of the hot water tank is close to or equal to that of the warm water tank. At this time, in order to ensure that the water temperature of the hot water tank is always higher than that of the warm water tank, heat circulation between the collector and the hot water tank will be controlled.

[0128] If the difference between the first water temperature of the hot water tank and the second water temperature of the warm water tank is greater than the preset threshold, it indicates that the water temperature of the hot water tank and the warm water tank are not yet in equilibrium, which means that the water temperature of the warm water tank is still insufficient. At this time, heat circulation between the collector and the warm water tank can be controlled.

[0129] Understandably, when it is determined that the first water temperature of the hot water tank and the second water temperature of the warm water tank are not in equilibrium, it means that the water temperature of the warm water tank is lower than that of the hot water tank, and it also means that there is a large difference between the water temperatures of the warm water tank and the hot water tank. At this time, in order to increase the water temperature of the warm water tank, heat circulation between the collector and the warm water tank will be controlled.

[0130] For example, assuming the preset threshold is 15℃, and the first water temperature of the hot water tank is known to be 70℃ and the second water temperature of the warm water tank is 65℃, based on this information, it can be determined that the water temperature of the hot water tank and the water temperature of the warm water tank are in equilibrium. At this time, in order to ensure that the water temperature in the hot water tank is higher than that in the warm water tank, heat circulation between the collector and the hot water tank can be controlled.

[0131] S207: Determine whether the first water temperature is greater than the second preset temperature; if yes, proceed to step S209; if no, proceed to step S207.

[0132] The purpose of determining whether the first water temperature of the hot water tank is greater than the second preset temperature is to determine whether the water temperature inside the hot water tank is too high.

[0133] If the first water temperature in the hot water tank is greater than the second preset temperature, it indicates that the water temperature in the hot water tank is too high. At this time, when it is determined that the second water temperature in the warm water tank is greater than the second preset temperature, the heat circulation between the collector and the warm water tank can be stopped.

[0134] S208: Determine if the second water temperature is greater than the second preset temperature; if yes, proceed to step S209; if no, proceed to step S208.

[0135] The purpose of the step of determining whether the second water temperature in the warm water tank is greater than the second preset temperature is to determine whether the water temperature inside the warm water tank is too high.

[0136] If the second water temperature in the warm water tank is greater than the second preset temperature, it indicates that the water temperature in the warm water tank is too high. At this time, when it is determined that the second water temperature in the hot water tank is greater than the second preset temperature, the heat circulation between the collector and the warm water tank can be stopped.

[0137] Understandably, high temperatures can damage internal components of a solar water heater, including but not limited to the circulation pipes and temperature sensors. Therefore, when both the hot water tank and the warm water tank are detected to be too hot, stopping the heat circulation between the collector and the warm water tank in a timely manner can effectively prevent the water temperature from rising further.

[0138] S209: Control the heat circulation between the collector and the hot water tank to stop, and control the heat circulation between the collector and the warm water tank to stop.

[0139] The purpose of this step is to prevent the water temperature in the two water tanks from getting too high.

[0140] Understandably, by controlling the cessation of heat circulation between the collector and the hot water tank, and between the collector and the warm water tank, not only can the water temperature in both tanks be effectively managed, but users can also be provided with a comfortable hot water experience, thereby avoiding unnecessary risks (such as the risk of scalding) and losses, thus protecting the solar water heater and extending its service life.

[0141] The heating control method for a solar water heater provided in this embodiment first obtains the first water temperature of the hot water tank and the second water temperature of the warm water tank. Then, based on these water temperature values, the working process of the collector is determined. If the first water temperature is less than or equal to a first preset temperature, heat circulation is controlled between the collector and the hot water tank to raise the water temperature of the hot water tank. If the first water temperature is greater than the first preset temperature but the second water temperature is less than or equal to the first preset temperature, heat circulation is switched between the collector and the warm water tank to raise the water temperature of the warm water tank. Furthermore, when both water temperatures are between the first and second preset temperatures, heating is selectively continued between the hot water tank and the warm water tank based on the temperature difference between them to optimize water temperature balance. Additionally, if both water temperatures exceed the second preset temperature, all heat circulation operations are stopped to prevent overheating. This method effectively solves the problems of large water temperature fluctuations, difficulty in maintaining stability, and poor user experience associated with solar water heaters under different environmental conditions, thereby ensuring water temperature stability and user comfort.

[0142] Figure 3 The flow chart of the heating control method for the solar water heater provided in this embodiment Figure 3 .like Figure 3 As shown. This application also provides an implementation process for a heating control method for a solar water heater, including:

[0143] S301: Obtain the first water temperature of the hot water tank and the second water temperature of the warm water tank.

[0144] The explanation of step S301 is similar to that of step S101, and will not be repeated here.

[0145] S302: Determine whether the first water temperature is less than or equal to the first preset temperature. If yes, proceed to step S303; otherwise, proceed to step S304.

[0146] The explanation of step S302 is similar to that of step S202, and will not be repeated here.

[0147] S303: Control the heat circulation between the solar collector and the hot water tank.

[0148] S304: Determine whether the second water temperature is less than or equal to the first preset temperature; if yes, proceed to step S305; if no, proceed to step S306.

[0149] The explanation of step S304 is similar to that of step S204, and will not be repeated here.

[0150] S305: Control the heat circulation between the solar collector and the warm water tank.

[0151] S306: Determine whether the first water temperature and the second water temperature are both within a preset range. If yes, execute steps S303 and S305; if no, execute step S307.

[0152] The upper limit of the preset range is the second preset temperature, and the lower limit of the preset range is the first preset temperature. The second preset temperature can be, for example, 85℃. The preset range can be, for example, [55℃, 85℃]. The preset threshold can be, for example, 15℃. This application does not impose any special restrictions on this.

[0153] The purpose of determining whether the first water temperature in the hot water tank and the second water temperature in the warm water tank are both within the preset range is to determine whether the water temperature in the hot water tank and the warm water tank is within a safe and comfortable range.

[0154] If the first water temperature in the hot water tank and the second water temperature in the warm water tank are both within the preset range, it indicates that the water temperature in the hot water tank and the warm water tank is within a safe and comfortable range. At this time, the collector can be controlled to circulate heat between the hot water tank and the warm water tank respectively.

[0155] For example, assuming the preset range is [55℃, 85℃], and the first water temperature of the hot water tank is known to be 78℃, and the second water temperature of the warm water tank is known to be 65℃, then based on this information, it can be determined that the water temperature in the hot water tank is within a safe and comfortable range.

[0156] If the first water temperature of the hot water tank and the second water temperature of the warm water tank are not within the preset range, it indicates that the water temperature in the hot water tank and the warm water tank is not within a safe and comfortable range. In other words, it indicates that the first water temperature of the hot water tank and the second water temperature of the warm water tank are too high. At this time, the heat circulation between the collector and the warm water tank can be stopped.

[0157] For example, assuming the preset range is [55℃, 85℃], and the first water temperature of the hot water tank is known to be 88℃, and the second water temperature of the warm water tank is known to be 65℃, then based on this information, it can be determined that the water temperature in the hot water tank is too high, and at the same time, it can also be determined that the warm water tank is within a safe and comfortable range.

[0158] S307: Control the thermal circulation between the solar collector and the warm water tank to stop, and control the thermal circulation between the solar collector and the warm water tank to stop.

[0159] The heating control method for a solar water heater provided in this embodiment first obtains the water temperatures of the hot water tank and the warm water tank. When the hot water tank temperature is less than or equal to a first preset temperature, heat circulation is controlled between the collector and the hot water tank to raise the hot water tank temperature. If the hot water tank temperature is greater than the first preset temperature but the warm water tank temperature is less than or equal to the first preset temperature, then heat circulation is switched between the collector and the warm water tank. Furthermore, if both water temperatures are within the range of the first preset temperature to the second preset temperature, the water temperatures are maintained stably simultaneously, ensuring that the water temperature does not drop through continuous heat circulation. If both water temperatures exceed this range, all heat circulation operations are stopped. This method effectively solves the problems of unstable water temperature and poor user experience in existing solar water heaters under unfavorable natural conditions, ensuring continuous water temperature stability and a comfortable user experience.

[0160] Optionally, since the solar water heater also includes a thermostatic valve, with the first interface of the thermostatic valve connected to the collector, the third interface of the thermostatic valve connected to the warm water tank, and the second interface of the thermostatic valve connected to the hot water tank, based on the above embodiments, this application provides specific implementation methods for controlling the heat circulation between the collector and the hot water tank and controlling the heat circulation between the collector and the warm water tank, as follows.

[0161] 1) When the first water temperature is less than or equal to the first preset temperature, control the heat collector and the hot water tank to perform heat circulation, specifically including:

[0162] When the first water temperature is less than or equal to the first preset temperature, the first interface of the temperature control valve is connected to the second interface of the temperature control valve.

[0163] The first interface refers to the outlet end connected to the solar collector. Its function is to circulate the heat medium in the solar collector to the hot water tank or the warm water tank, so as to heat the water in the hot water tank or the water in the warm water tank.

[0164] The second interface refers to the inlet end connected to the hot water tank that needs to be heated. Its function is to receive the heat medium from the collector, which carries enough heat to heat the water in the hot water tank.

[0165] The purpose of connecting the first and second ports of the thermostatic valve is to initiate the heat circulation between the collector and the hot water tank to heat the water in the tank.

[0166] Understandably, when the first water temperature of the hot water tank is determined to be less than or equal to the first preset temperature, it means that the water stored in the hot water tank needs to be heated. Therefore, by connecting the first port and the second port of the thermostatic valve, the heat medium of the solar collector can be allowed to flow, thereby transferring the heat collected on the solar collector to the hot water tank and increasing the water temperature of the hot water tank.

[0167] 2) When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, control the heat collector and the warm water tank to perform heat circulation, specifically including:

[0168] When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

[0169] The third interface refers to the inlet end connected to the warm water tank that needs to be heated. Its function is to receive the heat medium from the collector, which carries enough heat to heat the water in the warm water tank.

[0170] The purpose of connecting the first and third ports of the temperature control valve is to start the heat circulation between the collector and the warm water tank to heat the water in the warm water tank.

[0171] Understandably, when the second water temperature of the warm water tank is determined to be less than or equal to the first preset temperature, it means that the water stored in the warm water tank needs to be heated. Therefore, by connecting the first port and the third port of the thermostatic valve, the heat medium of the solar collector can be allowed to flow, thereby effectively transferring the heat collected on the solar collector to the warm water tank to raise the water temperature inside the warm water tank.

[0172] 3) When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, control the heat collector and the hot water tank to perform heat circulation, specifically including:

[0173] When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, the first interface of the temperature control valve is connected to the second interface of the temperature control valve.

[0174] Understandably, when the first water temperature of the hot water tank and the second water temperature of the warm water tank are determined to be in equilibrium, it means that the water temperature of the hot water tank is close to or equal to that of the warm water tank. Therefore, in order to ensure that the water temperature of the hot water tank is always higher than that of the warm water tank, the first and second ports of the thermostatic valve will be connected to transfer the heat collected on the collector to the hot water tank, thereby raising the water temperature of the hot water tank.

[0175] 4) When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, control the heat collector and the warm water tank to perform heat circulation, specifically including:

[0176] When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

[0177] Understandably, when it is determined that the first water temperature of the hot water tank and the second water temperature of the warm water tank are not in equilibrium, it means that the water temperature of the warm water tank is lower than that of the hot water tank, and it also means that there is a large difference between the water temperatures of the warm water tank and the hot water tank. At this time, in order to increase the water temperature of the warm water tank, the first and third ports of the thermostatic valve will be connected so that the heat collected on the collector can be transferred to the hot water tank, thereby increasing the water temperature of the warm water tank.

[0178] 5) When both the first water temperature and the second water temperature are within a preset range, control the heat circulation between the collector and the hot water tank, and control the heat circulation between the collector and the warm water tank, specifically including:

[0179] When both the first water temperature and the second water temperature are within a preset range, the first interface of the temperature control valve is connected to the second interface of the temperature control valve, and the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

[0180] Understandably, once the first water temperature of the hot water tank and the second water temperature of the warm water tank are both within the preset range, it means that the water temperature in the hot water tank and the warm water tank is within a safe and comfortable range. At this time, in order to continue to increase the water temperature of the hot water tank and the warm water tank, the first interface of the thermostatic valve will be connected to the second interface and the third interface respectively, so that the heat collected on the collector can be transferred to the hot water tank and the warm water tank at the same time, thereby increasing the water temperature of the hot water tank and the warm water tank.

[0181] 6) When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, control the thermal circulation between the solar collector and the warm water tank to stop, specifically including:

[0182] When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the first interface of the temperature control valve is disconnected from the second interface of the temperature control valve, and the first interface of the temperature control valve is disconnected from the third interface of the temperature control valve.

[0183] Understandably, when it is determined that the first water temperature of the hot water tank and the second water temperature of the warm water tank are both greater than the second preset temperature, it means that the water temperature in both the hot water tank and the warm water tank is too high. At this time, in order to prevent the water temperature in the hot water tank and the warm water tank from continuing to rise, the first interface of the thermostatic valve will be disconnected from the second interface and the third interface respectively.

[0184] Optionally, since the solar water heater also includes an electric heating module located in the hot water tank, this application provides a specific operating process for the electric heating module, which specifically includes:

[0185] The first step is to turn on the electric heating module when the water temperature in the hot water tank is lower than the third preset temperature for a period of time longer than the preset time.

[0186] The third preset temperature indicates the water temperature at which the electric heating module is allowed to start. The duration of the third preset temperature indicates the allowable duration for the water temperature in the hot water tank to stabilize after the heat exchanger and the hot water tank have undergone thermal circulation. The preset time indicates the duration for which the water temperature in the hot water tank remains stable; for example, it can be 2 minutes or 4 minutes. This application does not impose any special limitations on this.

[0187] If the duration for which the water temperature in the hot water tank is lower than the third preset temperature is determined to be greater than the preset time, it indicates that although the collector has attempted to heat the water in the hot water tank, the water temperature has not yet stabilized. At this time, in order to quickly increase and stabilize the water temperature in the hot water tank, the electric heating module needs to be turned on.

[0188] The second step is to activate the electric heating module in response to an external activation command.

[0189] The activation command can be, for example, a user directly clicking the function button corresponding to the electric heating module to send an activation command, or the solar water heater can automatically control the electric heating module to start. This application does not impose any special restrictions on this.

[0190] By activating the electric heating module, the solar water heater can quickly replenish or raise the water temperature in the hot water tank to meet the user's immediate hot water needs.

[0191] Understandably, during operation, the electric heating module converts electrical energy into heat energy, which is then transferred to the water in the hot water tank via heat conduction, thereby heating and raising the water temperature. This process ensures that the solar water heater still has a sufficient supply of hot water even under unfavorable natural conditions (such as cloudy or rainy days).

[0192] Figure 4 A schematic diagram of the solar water heater provided in this application. Figure 4 As shown, the solar water heater includes a hot water tank 401, a warm water tank 402, a thermostatic valve 403, a collector 404, and an electric heating module 405.

[0193] Hot water tank 401 is located at the outlet of the solar water heater;

[0194] The warm water tank 402 is located at the inlet end of the solar water heater;

[0195] The thermostatic valve 403 includes multiple interfaces, namely a first interface 31, a second interface 32, and a third interface 33. The first interface 31 is connected to the solar collector 404, the second interface 32 is connected to the hot water tank, and the third interface 33 is connected to the warm water tank.

[0196] The electric heating module 405 is used to heat the water inside the hot water tank 401. The electric heating module 405 is located in the hot water tank 401.

[0197] Figure 5 This is a schematic diagram of the thermostatic valve structure of the solar water heater provided in this application. Figure 5 As shown, the temperature control valve 403 includes multiple interfaces, namely the first interface 31, the second interface 32, and the third interface 33.

[0198] Figure 6 This is a schematic diagram of the heating control device for the solar water heater provided in this application. Figure 6 As shown, this application provides a heating control device for a solar water heater, the heating control device 500 of the solar water heater including:

[0199] The acquisition module 501 is used to acquire the first water temperature of the hot water tank and the second water temperature of the warm water tank;

[0200] Control module 502 is used to control the heat circulation between the collector and the hot water tank when the first water temperature is less than or equal to the first preset temperature;

[0201] The control module 502 is further configured to control the heat collector and the warm water tank to perform heat circulation when the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature.

[0202] Optionally, the control module 502 is further configured to control the heat collector and the hot water tank to perform heat circulation when both the first water temperature and the second water temperature are within a preset range and the difference between the first water temperature and the second water temperature is less than a preset threshold.

[0203] The control module 502 is further configured to control the heat collector and the warm water tank to perform heat circulation when the first water temperature and the second water temperature are both within a preset range and the difference between the first water temperature and the second water temperature is greater than a preset threshold.

[0204] The upper limit of the preset range is the second preset temperature, and the lower limit of the preset range is the first preset temperature.

[0205] Optionally, the control module 502 is further configured to control the heat circulation between the solar collector and the hot water tank when both the first water temperature and the second water temperature are within a preset range, and to control the heat circulation between the solar collector and the warm water tank.

[0206] Optionally, the control module 502 is further configured to control the heat circulation between the solar collector and the hot water tank to stop when the first water temperature is greater than the second preset temperature and the second water temperature is greater than the second preset temperature, and to control the heat circulation between the solar collector and the warm water tank to stop.

[0207] Optionally, the solar water heater further includes a thermostatic valve, wherein the first port of the thermostatic valve is connected to the collector, the third port of the thermostatic valve is connected to the warm water tank, and the second port of the thermostatic valve is connected to the hot water tank.

[0208] When the first water temperature is less than or equal to the first preset temperature, controlling the heat collector and the hot water tank to perform heat circulation specifically includes:

[0209] The control module 502 is specifically used to control the first interface of the temperature control valve to connect with the second interface of the temperature control valve when the first water temperature is less than or equal to the first preset temperature.

[0210] When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0211] The control module 502 is specifically used to control the first interface of the temperature control valve to connect to the third interface of the temperature control valve when the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature.

[0212] Optionally, when both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, heat circulation is controlled between the solar collector and the hot water tank, specifically including:

[0213] The control module 502 is specifically used to connect the first interface of the temperature control valve to the second interface of the temperature control valve when both the first water temperature and the second water temperature are within a preset range and the difference between the first water temperature and the second water temperature is less than a preset threshold.

[0214] Accordingly, when both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0215] The control module 502 is specifically used to connect the first interface of the temperature control valve to the third interface of the temperature control valve when both the first water temperature and the second water temperature are within a preset range and the difference between the first water temperature and the second water temperature is greater than a preset threshold.

[0216] Optionally, when both the first water temperature and the second water temperature are within a preset range, heat circulation is controlled between the solar collector and the hot water tank, and heat circulation is controlled between the solar collector and the warm water tank, specifically including:

[0217] The control module 502 is specifically used to connect the first interface of the temperature control valve to the second interface of the temperature control valve and to the third interface of the temperature control valve when both the first water temperature and the second water temperature are within a preset range.

[0218] When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the heat circulation between the solar collector and the warm water tank is stopped, specifically including:

[0219] The control module 502 is specifically used to disconnect the first interface of the temperature control valve from the second interface of the temperature control valve and to disconnect the first interface of the temperature control valve from the third interface of the temperature control valve when the first water temperature is greater than the second preset temperature and the second water temperature is greater than the second preset temperature.

[0220] Optionally, the solar water heater further includes an electric heating module located in the hot water tank, and the device further includes: a start-up module 503;

[0221] The start-up module 503 is used to turn on the electric heating module when the water temperature in the hot water tank is lower than the third preset temperature for a longer than a preset time.

[0222] The start module 503 is also used to start the electric heating module in response to an external start command.

[0223] Figure 7 A schematic diagram of the heating control device for the solar water heater provided in this application. Figure 7 As shown, this application provides a heating control device for a solar water heater. The heating control device 600 for the solar water heater includes: a receiver 601, a transmitter 602, a processor 603, and a memory 604.

[0224] Receiver 601 is used to receive instructions and data;

[0225] Transmitter 602 is used to send commands and data;

[0226] Memory 604 is used to store instructions executed by the computer;

[0227] The processor 603 is used to execute computer execution instructions stored in the memory 604 to implement the various steps of the solar water heater heating control method in the above embodiments. For details, please refer to the relevant descriptions in the foregoing embodiments of the solar water heater heating control method.

[0228] Optionally, the memory 604 can be either standalone or integrated with the processor 603.

[0229] When the memory 604 is set up independently, the electronic device also includes a bus for connecting the memory 604 and the processor 603.

[0230] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the heating control method of a solar water heater as described above, performed by the heating control device of the solar water heater.

[0231] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between 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 collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media 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 technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0232] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heating control method for a solar water heater, characterized in that, The solar water heater includes a hot water tank, a warm water tank, and a collector; the method includes: Obtain the first water temperature of the hot water tank and the second water temperature of the warm water tank; When the first water temperature is less than or equal to the first preset temperature, the heat collector and the hot water tank are controlled to circulate heat. When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, the collector and the warm water tank are controlled to circulate heat.

2. The heating control method according to claim 1, characterized in that, The method further includes: When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, the collector and the hot water tank are controlled to circulate heat. When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, the collector and the warm water tank are controlled to circulate heat. The upper limit of the preset range is the second preset temperature, and the lower limit of the preset range is the first preset temperature.

3. The heating control method according to claim 1, characterized in that, The method further includes: When both the first water temperature and the second water temperature are within a preset range, the heat collector and the hot water tank are controlled to circulate heat, and the heat collector and the warm water tank are controlled to circulate heat.

4. The heating control method according to any one of claims 1 to 4, characterized in that, The method further includes: When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the heat circulation between the collector and the hot water tank is stopped, and the heat circulation between the collector and the warm water tank is also stopped.

5. The heating control method according to claim 1, characterized in that, The solar water heater also includes a temperature control valve, the first port of which is connected to the collector, the third port of which is connected to the warm water tank, and the second port of which is connected to the hot water tank. When the first water temperature is less than or equal to the first preset temperature, controlling the heat collector and the hot water tank to perform heat circulation specifically includes: When the first water temperature is less than or equal to the first preset temperature, the first interface of the temperature control valve is connected to the second interface of the temperature control valve. When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, heat circulation is controlled between the solar collector and the warm water tank, specifically including: When the first water temperature is greater than the first preset temperature and the second water temperature is less than or equal to the first preset temperature, the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

6. The heating control method according to claim 5, characterized in that, When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, heat circulation is controlled between the solar collector and the hot water tank, specifically including: When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is less than a preset threshold, the first interface of the temperature control valve is connected to the second interface of the temperature control valve. Accordingly, when both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, heat circulation is controlled between the solar collector and the warm water tank, specifically including: When both the first water temperature and the second water temperature are within a preset range, and the difference between the first water temperature and the second water temperature is greater than a preset threshold, the first interface of the temperature control valve is connected to the third interface of the temperature control valve.

7. The heating control method according to claim 5, characterized in that, With both the first and second water temperatures within a preset range, controlling the heat circulation between the solar collector and the hot water tank, and controlling the heat circulation between the solar collector and the warm water tank, specifically includes: When both the first water temperature and the second water temperature are within a preset range, the first interface of the temperature control valve is connected to the second interface of the temperature control valve, and the first interface of the temperature control valve is connected to the third interface of the temperature control valve. When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the heat circulation between the solar collector and the warm water tank is stopped, specifically including: When the first water temperature is greater than the second preset temperature, and the second water temperature is greater than the second preset temperature, the first interface of the temperature control valve is disconnected from the second interface of the temperature control valve, and the first interface of the temperature control valve is disconnected from the third interface of the temperature control valve.

8. The heating control method according to any one of claims 5 to 7, characterized in that, The solar water heater further includes an electric heating module located in the hot water tank, and the method further includes: When the water temperature in the hot water tank remains below the third preset temperature for a period of time longer than a preset time, the electric heating module is activated. The electric heating module is turned on in response to an external start command.

9. A solar water heater, characterized in that, It includes a solar collector, a warm water tank, a hot water tank, and a heating control device, wherein the heating control device is used to execute the heating control method of claims 1 to 8.

10. The solar water heater according to claim 9, characterized in that, The water heater also includes a thermostatic valve and an electric heating module. The first interface of the thermostatic valve is connected to the solar collector, the second interface of the thermostatic valve is connected to the hot water tank, the third interface of the thermostatic valve is connected to the warm water tank, and the electric heating module is located in the hot water tank.

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