Solar heating system

Abstract

The invention provides a solar heat supply system, which relates to the technical field of photovoltaic thermal power, and comprises a heat collector, a water pump and a heat exchanger which are arranged on a heat collection loop; the control module is connected with the temperature detection device, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the water pump, and the control module is used for controlling the temperature of the water pump according to temperature data detected by the temperature detection device in combination with an anti-freezing control strategy. And the opening and closing states of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve and the operation state of the water pump are controlled. The electromagnetic valve and the water pump are controlled through the control module based on the temperature, accurate anti-freezing control is achieved, pipeline freezing is avoided, and the operation efficiency of the heat supply system is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic thermal technology, and in particular to a solar heating system. Background Art

[0002] In winter, the outdoor temperature is low. When applying solar energy, the antifreeze problem of solar collectors must be considered. The antifreeze control of the antifreeze system in the related technology is not accurate enough, and it may not be able to detect the freezing of the pipeline in time, which will lead to the freezing of the pipeline and reduce the operating efficiency of the heating system. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the first object of the present application is to provide a solar heating system.

[0005] The second objective of the present application is to provide an electronic device.

[0006] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a solar heating system, including: a solar collector and a water pump, a heat exchanger, a temperature detection device, an antifreeze pipeline, and a control module arranged on a heat collection loop;

[0007] Part of the pipeline in the heat collection loop passes through the heat exchanger;

[0008] The two ends of the antifreeze pipeline are respectively connected to the two ends of the pipeline on the heat collection loop passing through the heat exchanger part;

[0009] A first solenoid valve is provided on the antifreeze pipeline, and a second solenoid valve and a third solenoid valve are provided on the pipeline passing through the heat exchanger part on the heat collection loop;

[0010] The control module is connected to the temperature detection device, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the water pump. The control module is used to control the opening and closing states of the first solenoid valve, the second solenoid valve, and the third solenoid valve and the operating state of the water pump according to the temperature data detected by the temperature detection device in combination with the antifreeze control strategy.

[0011] Optionally, the temperature detection device is arranged at the following positions: the inlet and outlet of the heat collector; the first junction point and the second junction point of the outdoor side and the indoor side of the heat collection loop;

[0012] The temperature of the inlet of the collector is a first temperature, the temperature of the outlet of the collector is a second temperature, the temperature of the first junction is a third temperature, and the temperature of the second junction is a fourth temperature.

[0013] Optionally, two ends of the portion of the heat collection loop passing through the heat exchanger are a first node and a second node, and two ends of the antifreeze pipeline are connected to the first node and the second node respectively;

[0014] The second solenoid valve is disposed between the first node and the heat exchanger, and the third solenoid valve is disposed between the second node and the heat exchanger.

[0015] Optionally, when the temperatures detected by the temperature detection device are greater than a preset first temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to stop running.

[0016] Optionally, when at least one of the temperatures detected by the temperature detection device is less than or equal to a preset first temperature threshold and greater than a preset second temperature threshold, the control device is used to control the first solenoid valve to close, the second solenoid valve and the third solenoid valve to open, and control the water pump to operate intermittently.

[0017] Optionally, when the temperature detected by the temperature detection device is less than or equal to a preset second temperature threshold and greater than a preset third temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to a continuous operation state.

[0018] Optionally, when the temperatures detected by the temperature detection device are less than or equal to a preset third temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to a continuous operation state, and control the auxiliary antifreeze equipment to open.

[0019] To achieve the above-mentioned purpose, a second aspect of the present application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0020] The memory stores computer-executable instructions;

[0021] The processor executes the computer-executable instructions stored in the memory to implement the system as described in any one of the first aspects.

[0022] The solar heating system provided in the present application controls the solenoid valve and the water pump based on the temperature through the control module, thereby achieving precise antifreeze control, avoiding pipe freezing, and improving the operating efficiency of the heating system.

[0023] And through precise control according to the real-time temperature, efficient antifreeze is achieved, avoiding antifreeze when it is not needed, thus saving energy.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0026] Figure 1 A schematic structural diagram of a solar heating system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0028] For the thermal link, the antifreeze problem of solar energy system is one of the main problems restricting the utilization of solar energy thermal energy in cold and severe cold regions. Therefore, the antifreeze problem of equipment and pipelines should be specially considered when operating in cold regions. The freezing process of water is as follows: when the temperature of water drops below 0℃, it becomes supercooled water. When ice nuclei larger than the critical size appear in the supercooled water, the freezing process begins. The ice nuclei grow in the supercooled water and eventually become ice in the macroscopic sense. Whether supercooled water with a certain degree of supercooling freezes is affected by many factors, including the flow state of water; the geometric and physical properties of the surface of the ice matrix; the surface area and the external force, etc. Studying the influence of these factors on the freezing of supercooled water will help to propose new ideas to prevent freezing, solve the antifreeze problem in solar water heating systems, and promote the application of solar water heating systems.

[0029] At present, commonly used antifreeze measures include: using antifreeze liquid; using air as the collector working fluid; using a circulating pump to circulate hot water between the hot water storage tank and the flat plate collector; emptying the working fluid in the collector; designing antifreeze collector plates and pipelines, etc.

[0030] Circulation antifreeze refers to a method of circulating water between the outdoor collector and pipeline and the water storage tank, using the high-temperature heat source in the water storage tank to heat the outdoor collector and pipeline to prevent them from freezing. Circulation antifreeze requires a circulation water pump (two sets of circulation pumps are required in an indirect system), and also consumes the high-temperature heat energy in the water tank. It can be said that circulation antifreeze is not energy-saving. Once a power outage occurs, the heat collection loop may freeze or freeze. In addition, when used in extremely cold areas, it may still freeze even if it is circulated. Especially for flat-plate collectors with large heat dissipation, the heat absorption plate core may be frozen.

[0031] Electric heating tape antifreeze means that electric heating tape is arranged at the location where frost cracking may occur. When the temperature is lower than the set value, the electric heating tape is turned on for heating to keep the water inside the pipe from freezing. This antifreeze method can be used in extremely cold areas, but some literature points out that the antifreeze effect and economy are not very good in extremely cold areas. Electric heating tape can only solve the antifreeze problem of pipelines, but cannot solve the antifreeze problem of collectors. Therefore, it can only be used in vacuum tube solar energy systems with antifreeze collectors. In addition, electric heating tape antifreeze consumes high-grade electricity, and the power is generally 10 to 25W / m, which has certain fire hazards and cannot be used during power outages.

[0032] Drainage antifreeze is an active antifreeze solution with a relatively reliable antifreeze effect, especially reflux drainage antifreeze. Therefore, it is mostly used for winter antifreeze of flat-plate collector systems. For all-glass vacuum tube collector systems, it is generally not advisable to use the drain antifreeze solution, because when the water is added again after draining, the all-glass vacuum tube may explode. In addition, drain antifreeze has certain requirements for the slope of the system pipeline and the collector. For large-scale solar heating systems, due to the long outdoor pipelines, the slope of the pipelines is affected by the site or layout, etc., and there is often water accumulation in the elbows and other pipe sections, which cannot be effectively drained.

[0033] Some scholars have modified the collector or system structure to solve the possible icing problem. Zheng Weili used low-temperature electric heating film to heat the core of the flat-plate solar collector, and conducted experimental research on the heating position, heating area, heating time, and heating power. The results showed that the use of low-temperature electric heating film can prevent the flat-plate solar collector from freezing and cracking in winter. Based on the comparative analysis of the anti-freezing principle, flow channel design, material properties and manufacturing process of the flat-plate collector structure, a diamond-shaped iron rope-shaped stainless steel structure anti-freezing flat-plate collector was developed, which can be used in the severely cold areas in the north.

[0034] Considering the application complexity and actual effect, adding antifreeze to the working fluid is a better antifreeze measure. Antifreeze antifreeze has the advantage of reliable antifreeze and is suitable for various types of collectors. Antifreeze antifreeze is usually used in split double-circuit solar energy systems or indirect circulation solar water heating or heating systems. It is a more common antifreeze method. Antifreeze is generally a mixture of ethylene glycol, water and a small amount of additives. The freezing point range is generally -40 to -60 ° C, and the specific heat capacity is about 3.56×10 3 J / (kg·℃), it can be seen that the minimum allowable operating temperature of the antifreeze liquid meets the temperature conditions of the area where the cold-region barracks are located. At the same time, it has a high specific heat capacity, so it is suitable as a heat collecting medium to solve the antifreeze problem of thermal equipment and pipelines in cold-region barracks.

[0035] At the same time, the selection of antifreeze concentration is usually determined based on the local minimum outdoor ambient temperature, which often leads to a higher antifreeze concentration, increasing system operating costs, or a lower antifreeze concentration that cannot effectively prevent freezing. Therefore, other antifreeze measures should also be adopted.

[0036] The embodiment of the present application provides a solar heating system, Figure 1 This is a schematic diagram of the structure of a solar heating system provided in an embodiment of the present application. Figure 1 As shown, the system includes: a heat collector 10 and a water pump 20, a heat exchanger 30, a temperature detection device 40, an antifreeze pipeline 50, and a control module 60, which are arranged on a heat collection loop;

[0037] Part of the pipeline in the heat collection loop passes through the heat exchanger;

[0038] The two ends of the antifreeze pipeline are respectively connected to the two ends of the pipeline on the heat collection loop passing through the heat exchanger part;

[0039] The antifreeze pipeline is provided with a first solenoid valve 71, and the pipeline passing through the heat exchanger part on the heat collection loop is provided with a second solenoid valve 72 and a third solenoid valve 73;

[0040] The control module is connected to the temperature detection device, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the water pump. The control module is used to control the opening and closing states of the first solenoid valve, the second solenoid valve, and the third solenoid valve and the operating state of the water pump according to the temperature data detected by the temperature detection device in combination with the antifreeze control strategy.

[0041] In this embodiment, a general solar energy heating system can be divided into three parts: a heat collection loop, a heat exchange loop, and a terminal heat dissipation loop. The heat collection loop includes a solar collector, a heat exchanger, a water pump, outdoor pipelines, and other auxiliary equipment, and is an important part of the solar energy system. Part of the pipelines in the heat collection loop and the heat exchange loop pass through the heat exchanger, and part of the pipelines in the heat exchange loop and the terminal heat dissipation loop pass through a heat storage tank.

[0042] In the heat collection loop, the heat exchanger and water pump are usually located indoors, while the collector and part of the pipeline are located outdoors. Therefore, the antifreeze of the solar energy system is mainly aimed at the antifreeze of the heat collection loop during nighttime operation, including the collector and outdoor pipelines, so the heat collection loop is also called the antifreeze loop. The specific practice or principle of the solar self-circulation antifreeze strategy is: set temperature measuring points at the inlet and outlet of the collector and the location of the outdoor pipeline that is prone to freezing, and control the operation of the collector loop through appropriate antifreeze control strategies according to the changes in the temperature measuring points, and make full use of the waste heat of the high-temperature liquid in the collector to replenish the outdoor pipeline, so that the temperature of the liquid in the pipeline is maintained at a high value or the temperature drop of the liquid in the outdoor pipeline is delayed by circulating flow, so as to avoid or delay the freezing of the liquid in the pipe, and at the same time ensure that the collector itself does not have the possibility of freezing and cracking; in addition, a bypass loop is added on both sides of the heat exchanger. During the antifreeze operation, the liquid in the loop circulates through the bypass loop (not through the plate heat exchanger), which can avoid the plate heat exchanger from freezing and cracking due to the low temperature of the liquid in the collector loop (for cold areas, if it can be ensured that the plate heat exchanger has no possibility of freezing and cracking, the bypass loop can be omitted, and the antifreeze loop is equivalent to the collector loop); the opening and closing of each solenoid valve and the operation of the antifreeze system are controlled by the control module.

[0043] Optionally, the temperature detection device is arranged at the following positions: the inlet and outlet of the heat collector; the first junction point and the second junction point of the outdoor side and the indoor side of the heat collection loop;

[0044] The temperature of the inlet of the collector is a first temperature T1, the temperature of the outlet of the collector is a second temperature T2, the temperature of the first junction is a third temperature T3, and the temperature of the second junction is a fourth temperature T4.

[0045] Optionally, two ends of the portion of the heat collection loop passing through the heat exchanger are a first node and a second node, and two ends of the antifreeze pipeline are connected to the first node and the second node respectively;

[0046] The second solenoid valve is disposed between the first node and the heat exchanger, and the third solenoid valve is disposed between the second node and the heat exchanger.

[0047] According to the principle of solar energy self-circulation antifreeze, the solar energy self-circulation control strategy is divided into three cases:

[0048] When the temperature of the liquid in the collector is high, first of all, we must make full use of the residual heat of the liquid in the vacuum tube for antifreeze. Since the vacuum tube collector has good thermal insulation performance and a large water capacity, the temperature is significantly higher than that of the outdoor pipe. Therefore, during nighttime operation, as time goes by and the outdoor ambient temperature changes, the temperature drop trend of the outdoor pipe part will be significantly higher than that of the collector. Therefore, compared with the collector, the temperature of the outdoor pipe part (T3, T4) will first reach the freezing temperature or be lower than a certain temperature value. Therefore, at this time, the high-temperature liquid in the collector can be sent to the outdoor pipeline by circulation to ensure that the temperature of the outdoor pipeline part is at a high level, and the entire collector loop will not freeze. At the same time, after a certain period of operation, when the liquid temperature in the entire collector loop is relatively uniform, the antifreeze operation should be stopped to reduce the operation time and save energy consumption. This situation is called intermittent operation.

[0049] When the temperature of the liquid in the collector is low but not frozen, while fully utilizing the residual heat of the liquid in the vacuum tube, ensure that there is no possibility of freezing of the liquid in the collector and outdoor pipeline. In this case, due to the low temperature of the liquid in the collector, the liquid temperature rise that can be achieved by circulating the outdoor pipeline is also low, and the time interval between two circulation operations is also short. In this case, the intermittent operation is changed to continuous operation.

[0050] At night, the collector is always in a heat dissipation state. As time goes by and the temperature of the liquid in the collector decreases, the entire collector loop may freeze. When there is no excess heat in the collector for antifreeze, in order to avoid the entire loop from freezing, other measures are needed to prevent freezing. This situation is called auxiliary operation condition.

[0051] Optionally, when the temperatures detected by the temperature detection device are greater than a preset first temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to stop running.

[0052] Optionally, when at least one of the temperatures detected by the temperature detection device is less than or equal to a preset first temperature threshold and greater than a preset second temperature threshold, the control device is used to control the first solenoid valve to close, the second solenoid valve and the third solenoid valve to open, and control the water pump to operate intermittently.

[0053] Optionally, when the temperature detected by the temperature detection device is less than or equal to a preset second temperature threshold and greater than a preset third temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to a continuous operation state.

[0054] Optionally, when the temperatures detected by the temperature detection device are less than or equal to a preset third temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to a continuous operation state, and control the auxiliary antifreeze equipment to open.

[0055] It should be noted that in order to ensure the logical smoothness of the control device during control, it is necessary to make the first temperature threshold > the second temperature threshold > the third temperature threshold. Optionally, the first temperature threshold is the freezing point temperature +3 to 5°C, the second temperature threshold is the freezing point temperature, and the third temperature threshold is the freezing point temperature -1 to 3°C.

[0056] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the system provided by the above embodiments.

[0057] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the system provided by the above embodiments.

[0058] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the system provided by the above embodiments when executed by a processor.

[0059] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0060] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0061] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0062] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] Any process or system description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code that includes one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0065] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0066] It should be understood that the various parts of the present application can be implemented with hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or systems can be implemented with software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented with hardware, as in another embodiment, it can be implemented with any one of the following technologies known in the art or their combination: a discrete logic circuit with a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit with a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0067] A person skilled in the art may understand that all or part of the steps of the system implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the system embodiment.

[0068] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0069] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A solar heating system, characterized in that: include: Heat collectors, water pumps and heat exchangers arranged on the heat collection loop; Temperature detection device, antifreeze pipeline, control module; Part of the pipeline in the heat collection loop passes through the heat exchanger; The two ends of the antifreeze pipeline are respectively connected to the two ends of the pipeline on the heat collection loop passing through the heat exchanger part; A first solenoid valve is provided on the antifreeze pipeline, and a second solenoid valve and a third solenoid valve are provided on the pipeline passing through the heat exchanger part on the heat collection loop; The control module is connected to the temperature detection device, the first solenoid valve, the second solenoid valve, the third solenoid valve, and the water pump. The control module is used to control the opening and closing states of the first solenoid valve, the second solenoid valve, and the third solenoid valve and the operating state of the water pump according to the temperature data detected by the temperature detection device in combination with the antifreeze control strategy.

2. The system according to claim 1, characterized in that The temperature detection device is arranged at the following positions: the inlet and outlet of the heat collector; the first junction point and the second junction point of the outdoor side and the indoor side of the heat collection loop; The temperature of the inlet of the collector is a first temperature, the temperature of the outlet of the collector is a second temperature, the temperature of the first junction is a third temperature, and the temperature of the second junction is a fourth temperature.

3. The system according to claim 2, characterized in that The two ends of the portion of the heat collection loop passing through the heat exchanger are a first node and a second node, and the two ends of the antifreeze pipeline are connected to the first node and the second node respectively; The second solenoid valve is disposed between the first node and the heat exchanger, and the third solenoid valve is disposed between the second node and the heat exchanger.

4. The system according to claim 3, characterized in that When the temperatures detected by the temperature detection device are all greater than a preset first temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to stop running.

5. The system according to claim 3, characterized in that When at least one of the temperatures detected by the temperature detection device is less than or equal to a preset first temperature threshold and greater than a preset second temperature threshold, the control device is used to control the first solenoid valve to close, the second solenoid valve and the third solenoid valve to open, and control the water pump to operate intermittently.

6. The system according to claim 3, characterized in that When the temperatures detected by the temperature detection device are less than or equal to a preset second temperature threshold and greater than a preset third temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to a continuous operation state.

7. The system according to claim 3, characterized in that When the temperatures detected by the temperature detection device are less than or equal to a preset third temperature threshold, the control device is used to control the first solenoid valve to open, the second solenoid valve and the third solenoid valve to close, and control the water pump to be in a continuous operation state, and control the auxiliary antifreeze equipment to open.

8. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the system according to any one of claims 1 to 7.

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