Heat control method, system and device for balcony wall-mounted solar water heater

Abstract

The invention relates to the technical field of heat control based on medium flow dynamic adjustment, in particular to a balcony wall-mounted solar water heater heat control method, system and device. A heat control device of a balcony wall-mounted solar water heater comprises a heat collector, a water tank, a medium pipeline, an electric adjusting valve, an electromagnetic valve, a first temperature sensor, a second temperature sensor, a third temperature sensor, a controller and a water pipeline, and a heat control system of the balcony wall-mounted solar water heater is arranged in the device. The system executes the heat control method for the balcony wall-mounted solar water heater. The electric adjusting valve is additionally arranged on the medium pipeline, the temperature of the water tank is adjusted by combining the dynamic temperature difference and variable parameters, accurate temperature control can be achieved, the service life of the water heater is prolonged, energy is saved, environment friendliness is achieved, and cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat control based on dynamic adjustment of medium flow rate, and particularly to a heat control method, system and device for a balcony wall-mounted solar water heater. Background Art

[0002] Balcony wall-mounted solar water heaters have become the main application form for hot water supply in urban residences due to their flexible installation and suitability for high-rise buildings. Most balcony wall-mounted solar water heaters adopt a closed-loop circulation system. After being irradiated by sunlight, the solar collector transfers heat to the circulating medium. After the medium is heated, it flows into the indoor water tank by thermosiphon action to heat the water in the tank. After the medium is cooled by the water in the tank, it returns to the collector by gravity to complete the cycle. However, the current solar heating process lacks effective control, and the water temperature is extremely likely to be too high in summer when the sunlight is strong. For example, in the case of high temperature and strong sunlight and the user has not used it for a long time, the water tank temperature can exceed 100°C, resulting in the phenomenon of "boiling over", which causes a sharp increase in the pressure of the water tank and pipeline, leading to a "pipe burst" accident; the too high water temperature is also likely to cause scalding to users, and the PPR hot water pipe can only withstand a temperature of 70°C for a long time. High temperature will accelerate the creep of the water pipe, resulting in water leakage and shortening the service life of the pipeline.

[0003] Existing solutions for overheating of solar water heaters have many drawbacks. For example, the common method of draining water through the solenoid valve in the hot water tank to cool down only cools down briefly when the temperature is extremely high, and cannot stably control the water temperature within a suitable range (according to the "Building Water Supply and Drainage Design Standard" GB50015-2019, the outlet water temperature of the water heating equipment should not exceed 70°C), and it will also cause problems such as waste of water resources, large water temperature fluctuations, and secondary disasters caused by high-temperature drainage; for the solar collector sunshade facility method, manual control has problems such as untimely covering and cumbersome operation; automatic control faces problems such as complex structure, high failure rate, response lag, and safety hazards caused by the aging and falling off of the sunshade curtain, and is rarely used in actual applications.

[0004] Therefore, the present invention proposes a heat control method, system and device for a balcony wall-mounted solar water heater to solve the above problems. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention develops a heat control method, system and device for a balcony wall-mounted solar water heater. By adding an electric control valve to the medium pipeline and adjusting the water tank temperature in combination with dynamic temperature difference and control parameter adjustment, precise temperature control can be achieved, the service life of the water heater can be extended, energy is saved and the environment is protected, and the cost is reduced.

[0006] The technical solution for the present invention to solve the technical problem is a heat control method for a balcony wall-mounted solar water heater, which is applied to a heat control device for a balcony wall-mounted solar water heater. The heat control device for a balcony wall-mounted solar water heater includes a collector, a water tank, a medium pipeline, an electric control valve, a solenoid valve, a first temperature sensor, a second temperature sensor, a third temperature sensor, a controller, and a water pipeline. The characteristics are as follows: S1. The heat control device for the balcony wall-mounted solar water heater starts to operate, and reads the temperatures of the first temperature sensor, the second temperature sensor, and the third temperature sensor respectively. , and ; S2. Judge the magnitude relationship between the temperature of the second temperature sensor and the set temperature threshold ; If , set the opening degree of the electric control valve to 100%, read the temperature of the second temperature sensor and then judge the magnitude relationship with the temperature threshold again until when it stops; If , proceed to the next step; S3. Judge the magnitude relationship between the temperature of the second temperature sensor and the set temperature threshold ; If , close the electric control valve; If , proceed to the next step; S4. Calculate the dynamic temperature difference , and and the temperature rise rate of the second temperature sensor according to the temperatures of the first temperature sensor, the second temperature sensor, and the third temperature sensor , and judge the magnitude relationship between the temperature rise rate of the second temperature sensor and the set temperature rise rate threshold ; If , adjust the control parameters and then proceed to the next step; If , adopt the fixed control parameters and then proceed to the next step; S5. Calculate the control quantity according to the control parameters determined in step S4, convert the control quantity into an electric current signal, and then adjust the opening degree of the electric control valve, and then read the temperature of the second temperature sensor again, and judge the temperature The magnitude between the set temperature threshold ; If , go to step S2; If , turn on the solenoid valve and then proceed to the next step; S6. Read the temperature of the second temperature sensor again , and judge the magnitude of the temperature between the set temperature threshold ; If , continue to turn on the solenoid valve until ; If , turn off the solenoid valve and then proceed to the next step; S7. Read the temperature of the second temperature sensor again , and judge the magnitude of the temperature between the set temperature threshold ; If , go to step S4; If , the heat control device of the balcony wall-mounted solar water heater ends operation.

[0007] Step S2 is specifically as follows: The first temperature sensor collects the temperature at the outlet of the collector, the second temperature sensor collects the temperature in the middle of the water tank, and the third temperature sensor collects the temperature at the outlet of the water tank. The sampling frequency of the three temperature sensors is 1 Hz.

[0008] Step S4 is specifically as follows: (1) Calculate the dynamic temperature difference and the temperature rise rate: According to the temperature , and calculate the dynamic temperature difference , and the calculation formula is as follows: ; Calculate the temperature rise rate of the second temperature sensor in units of 60 s, and the calculation formula is as follows: , where represents the temperature of the second temperature sensor at the moment , represents the temperature of the second temperature sensor at the moment ; (2) Control parameters: The control parameters include the proportional coefficient and the integral coefficient; If , the fixed control parameters are adopted, and the fixed control parameters include the proportional coefficient and the integral coefficient ; If , the control parameters are adjusted. The adjusted control parameters include the proportional coefficient and the integral coefficient . The calculation formula for adjusting the control parameters is as follows: , , where represents the adjusted proportional coefficient, represents the adjusted integral coefficient, represents the decay factor at time

[0009] Step S5 is specifically as follows: Calculate the control quantity C according to the dynamic temperature difference and the control parameters. The control parameters are the fixed control parameters , or the adjusted control parameters . If is not satisfied, the calculation formula for the control quantity is as follows: , If is satisfied, the calculation formula for the control quantity is as follows: ; Then, convert the control quantity into a 4~20mA current signal , and the calculation formula is as follows: , where , respectively represent the preset maximum and minimum values of the control quantity; Then use the current signal to adjust the opening of the electric control valve , and the calculation formula is as follows: .

[0010] The present invention also provides a heat control system for a balcony wall-mounted solar water heater, which executes a heat control method for a balcony wall-mounted solar water heater, including the following modules: Temperature data acquisition module: Collect the temperatures of the first temperature sensor, the second temperature sensor and the third temperature sensor; Water tank heating module: Set the temperature threshold , compare the temperature data collected by the temperature data acquisition module with the temperature threshold to determine whether to turn on the electric control valve to heat the water tank; Temperature adjustment module: Set the temperature threshold , compare the temperature data collected by the temperature data acquisition module with the temperature threshold to determine whether to close the electric control valve; Control parameter adjustment module: According to the temperature of the second temperature sensor adjusted by the temperature adjustment module, the temperatures of the second temperature sensor and the third temperature sensor, calculate the dynamic temperature difference and the temperature rise rate of the second temperature sensor, and according to the set temperature rise rate threshold , determine whether it is necessary to adjust the control parameters; Electric control valve adjustment module: Compare the temperature of the second temperature sensor adjusted by the control parameter adjustment module with the temperature threshold to determine whether to open the solenoid valve; Pressure relief protection module: When it is determined by the electric control valve adjustment module that the solenoid valve needs to be opened, open the solenoid valve to drain water and cool down; Restart the heating module after pressure relief: Compare the temperature of the second temperature sensor that has drained water and cooled down with the temperature threshold to determine whether to continue to open the solenoid valve to drain water and reduce pressure.

[0011] The present invention also provides a heat control device for a balcony wall-mounted solar water heater, which is controlled by a heat control system for a balcony wall-mounted solar water heater and executes a heat control method for a balcony wall-mounted solar water heater, including a collector, a water tank, a medium pipeline, an electric control valve, a solenoid valve, a first temperature sensor, a second temperature sensor, a third temperature sensor, a controller and a water pipeline; The collector is installed at the lower part of the outdoor wall of the balcony, the water tank is installed at the upper part of the indoor wall of the balcony, the water tank is provided with a second temperature sensor, a controller and a water pipeline, the water pipeline includes a water pipeline for water flowing out of the water tank and a water pipeline for water flowing into the water tank, a third temperature sensor and a solenoid valve are arranged on the water pipeline for water flowing out of the water tank, the collector and the water tank are connected through a medium pipeline, an electric control valve is arranged on the medium pipeline for the medium flowing from the water tank to the collector, and a first temperature sensor is arranged on the medium pipeline for the medium flowing from the collector to the water tank.

[0012] The effects provided in the invention content are only the effects of the embodiments, rather than all the effects of the invention. The above technical solutions have the following advantages or beneficial effects: The present invention realizes precise control of heat for a balcony wall-mounted solar water heater by setting an electric control valve in the medium circulation pipeline between the collector and the water tank, combining multi-node temperature feedback with an adaptive PID control algorithm, and fusing multi-sensor data, a dynamic parameter adjustment algorithm, and a hierarchical safety protection mechanism. Furthermore, it prevents the temperature of the solar water heater from being too high due to uncontrollable heating, while reducing the service life of the equipment and pipelines, scalding, and endangering personal safety. It can prevent the reduction of the service life of the equipment and pipelines, scalding, and endangering personal safety caused by overheating of the solar water heater, and has the advantages of precise temperature control, safety and confidence, extended service life, energy conservation and environmental protection, and low cost, realizing the efficient, safe, and stable operation of the balcony wall-mounted solar water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention.

[0014] Figure 1 It is a schematic flow chart of the method of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the device of the present invention; Appendix Figure 2 Marking Description: 1. Collector; 2. Water tank; 3. Medium pipeline; 4. Electric control valve; 5. Solenoid valve; 6. First temperature sensor; 7. Second temperature sensor; 8. Third temperature sensor; 9. Controller; 10. Water pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below through specific embodiments and in conjunction with its accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below.

[0017] Embodiment 1 A certain residential project adopts a balcony wall-mounted solar energy system. Before the users moved in in July 2024, the solar energy system was not filled with circulating medium. On June 25, 2024, the users began to fill the medium, and the solar energy system started the heating function, but the users did not move in in time. By July 1, 2024, when the users officially moved in, it was found that the water temperature displayed on the solar water tank had reached 95 °C. After turning on the hot water faucet, a large amount of high-temperature hot water containing steam was released from the faucet. Due to the high temperature, it was completely unusable, and this process lasted for about 1 hour. One week after the users moved in, it was found that the hot water pipe laid in the floor cushion of the users' rooms leaked, and the ground had to be damaged for repair.

[0018] To prevent the recurrence of the above situation, the user modified the above hot water system, installed a heat control device for a balcony wall-mounted solar water heater in the present invention, and installed a heat control system for a balcony wall-mounted solar water heater. By adding an electric control valve to the medium pipeline, the water temperature in the hot water tank was controlled below 70°C, and the over-temperature situation did not occur again.

[0019] As Figure 1 shown, a heat control method for a balcony wall-mounted solar water heater is applied to a heat control device for a balcony wall-mounted solar water heater. The heat control device for a balcony wall-mounted solar water heater includes a collector, a water tank, a medium pipeline, an electric control valve, a solenoid valve, a first temperature sensor, a second temperature sensor, a third temperature sensor, a controller, and a water pipeline. The method is characterized by performing the following steps: S1. The heat control device for a balcony wall-mounted solar water heater starts to operate, and reads the temperatures of the first temperature sensor, the second temperature sensor, and the third temperature sensor respectively , and ; S2. Judge the magnitude relationship between the temperature of the second temperature sensor and the set temperature threshold , ; If , set the opening degree of the electric control valve to 100%, read the temperature of the second temperature sensor, and then judge the magnitude relationship with the temperature threshold again until ; If , proceed to the next step; S3. Judge the magnitude relationship between the temperature of the second temperature sensor and the set temperature threshold , ; If , close the electric control valve; If , proceed to the next step; S4. Calculate the dynamic temperature difference , and according to the temperatures of the first temperature sensor, the second temperature sensor, and the third temperature sensor, and judge the temperature rise rate of the second temperature sensor. Judge the temperature rise rate of the second temperature sensor and the set temperature rise rate threshold the magnitude between ; If , adjust the control parameter, and then proceed to the next step; If , adopt the fixed control parameter, and then proceed to the next step; S5. Calculate the control quantity according to the control parameter determined in step S4, convert the control quantity into a current signal, and then adjust the opening of the electric control valve. Then, read the temperature of the second temperature sensor again , and judge the temperature and the set temperature threshold the magnitude between ; If , go to step S2; If , open the solenoid valve, and then proceed to the next step; S6. Read the temperature of the second temperature sensor again , judge the temperature and the set temperature threshold the magnitude between ; If , continue to open the solenoid valve until stop; If , close the solenoid valve, and then proceed to the next step; S7. Read the temperature of the second temperature sensor again , judge the temperature and the set temperature threshold the magnitude between ; If , go to step S4; If , the heat control device of the balcony wall-mounted solar water heater ends the operation.

[0020] Step S2 is specifically as follows: The first temperature sensor collects the temperature at the outlet of the collector, the second temperature sensor collects the temperature in the middle of the water tank, and the third temperature sensor collects the temperature at the outlet of the water tank. The sampling frequency of the three temperature sensors is 1 Hz.

[0021] Step S4 is specifically as follows: (1) Calculate the dynamic temperature difference and the temperature rise rate: According to the temperature , and calculate the dynamic temperature difference , and the calculation formula is as follows: ; According to the following in different scenarios , formulate corresponding control strategies, as shown in Table 1 specifically; Table 1 Under different scenarios The corresponding control for the characteristics Calculate the temperature rise rate of the second temperature sensor in units of 60s, and the calculation formula is as follows: , wherein, represents the temperature of the second temperature sensor at time represents the temperature of the second temperature sensor at time; (2) Control parameters: The control parameters include a proportional coefficient and an integral coefficient; If , then fixed control parameters are adopted, and the fixed control parameters include the proportional coefficient and the integral coefficient ; If , then the control parameters are adjusted. The adjusted control parameters include the proportional coefficient and the integral coefficient , and the calculation formula for adjusting the control parameters is as follows: , , wherein, represents the adjusted proportional coefficient, represents the adjusted integral coefficient, represents the decay factor at time.

[0022] Step S5 is specifically as follows: Calculate the control quantity C according to the dynamic temperature difference and the control parameters. The control parameters are the fixed control parameters , or the adjusted control parameters . If is not satisfied, the calculation formula for the control quantity is as follows: , If is satisfied, the calculation formula for the control quantity is as follows: ; Then, convert the control quantity into a 4~20mA current signal , the calculation formula is as follows: , Among them, and respectively represent the preset maximum and minimum control amounts, which can be determined during the debugging process; Then, the current signal is used to adjust the opening degree of the electric control valve , the calculation formula is as follows: .

[0023] A heat control method for a balcony wall-mounted solar water heater follows the principle of hierarchical safety protection control, as shown in Table 2 specifically; Table 2 Hierarchical safety protection control principle Embodiment 2 A heat control system for a balcony wall-mounted solar water heater executes a heat control method for a balcony wall-mounted solar water heater, including the following modules: Temperature data acquisition module: Collect the temperatures of the first temperature sensor, the second temperature sensor, and the third temperature sensor; Water tank heating module: Set a temperature threshold , compare the temperature data collected by the temperature data acquisition module with the temperature threshold, and judge whether it is necessary to open the electric control valve to heat the water tank; Temperature adjustment module: Set a temperature threshold , compare the temperature data collected by the temperature data acquisition module with the temperature threshold, and judge whether it is necessary to close the electric control valve; Control parameter adjustment module: According to the temperature of the second temperature sensor adjusted by the temperature adjustment module, the temperatures of the second temperature sensor and the third temperature sensor, calculate the dynamic temperature difference and the temperature rise rate of the second temperature sensor, and according to the set temperature rise rate threshold , judge whether it is necessary to adjust the control parameters; Electric control valve adjustment module: Compare the temperature of the second temperature sensor adjusted by the control parameter adjustment module with the temperature threshold to judge whether it is necessary to open the solenoid valve; Pressure relief protection module: When it is judged by the electric control valve adjustment module that it is necessary to open the solenoid valve, open the solenoid valve to drain water and cool down; Heating module restart after pressure relief: Compare the temperature of the second temperature sensor that has drained water and cooled down with the temperature threshold to judge whether it is necessary to continue to open the solenoid valve to drain water and reduce pressure.

[0024] Embodiment 3 Such asFigure 2 As shown in the figure, a heat control device for a balcony wall-mounted solar water heater is controlled by a heat control system for a balcony wall-mounted solar water heater and executes a heat control method for a balcony wall-mounted solar water heater, including a collector, a water tank, a medium pipeline, an electric control valve, a solenoid valve, a first temperature sensor, a second temperature sensor, a third temperature sensor, a controller, and a water pipeline; The collector is installed at the lower part of the outdoor wall of the balcony, and the water tank is installed at the upper part of the indoor wall of the balcony. The water tank is provided with a second temperature sensor, a controller, and a water pipeline. The water pipeline includes a water pipeline for water flowing out of the water tank and a water pipeline for water flowing into the water tank. A third temperature sensor and a solenoid valve are provided on the water pipeline for water flowing out of the water tank. The collector and the water tank are connected through a medium pipeline. An electric control valve is provided on the medium pipeline for the medium flowing from the water tank to the collector, and a first temperature sensor is provided on the medium pipeline for the medium flowing from the collector to the water tank.

[0025] Among them, an electric control valve is added. On the medium transmission pipeline between the collector of the solar water heater and the water tank, an electric control valve with a linear relationship between the opening degree and the driving current is installed, which can ensure stable and precise adjustment and provide a hardware basis for realizing precise medium flow control; Three temperature sensors are set for the layout of the temperature sensors. The outlet temperature of the collector is monitored by the three temperature sensors respectively , the middle temperature of the water tank , the outlet temperature of the water tank , which is used to sense the solar irradiation intensity in real time and reflect the heat input rate; which is used to characterize the current heat storage capacity; which is used to reflect the actual water use demand and the heat consumption rate. When , it means that the heat is continuously input. When , it means that the heat consumption at the user end is insufficient and the overheating risk needs to be alerted.

[0026] The heat control device for the balcony wall-mounted solar water heater selects an integrated embedded controller (example model STM32F407) with multi-channel synchronous acquisition of multi-node temperature signals and a floating-point operation unit, which meets the system's requirements for rapid acquisition and complex operation of multi-temperature data and provides hardware support for the operation of the intelligent temperature control algorithm.

[0027] Although the specific implementation manners of the invention are described above in conjunction with the drawings, it is not a limitation to the protection scope of the invention. Based on the technical solutions of the invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the invention.

Claims

1. A heat control method for a balcony wall-mounted solar water heater, which is applied to a heat control device of a balcony wall-mounted solar water heater. The heat control device of the balcony wall-mounted solar water heater includes a collector, a water tank, a medium pipeline, an electric control valve, a solenoid valve, a first temperature sensor, a second temperature sensor, a third temperature sensor, a controller and a water pipeline. The feature is that it executes The following steps: S1. The heat control device of the balcony wall-mounted solar water heater starts to operate, and reads the temperatures of the first temperature sensor, the second temperature sensor and the third temperature sensor respectively , and ; S2. Determine the temperature of the second temperature sensor and the set temperature threshold to determine their magnitudes; If , set the opening of the electric control valve to 100%, read the temperature of the second temperature sensor , and then judge again the size compared with the temperature threshold until when it stops; If , then proceed to the next step; S3. Determine the temperature of the second temperature sensor and the set temperature threshold to determine their magnitudes; If , then close the electric control valve; If , then proceed to the next step; S4. Calculate the dynamic temperature difference based on the temperatures of the first temperature sensor, the second temperature sensor, and the third temperature sensor , and calculate the temperature rise rate of the second temperature sensor , and determine the magnitude between the temperature rise rate of the second temperature sensor and the set temperature rise rate threshold ; ​ If , adjust the control parameters and then proceed to the next step; If , then adopt fixed control parameters and then proceed to the next step; S5. Calculate the control quantity according to the control parameters determined in step S4, convert the control quantity into a current signal, and then adjust the opening of the electric control valve. Then, read the temperature of the second temperature sensor again , and judge the temperature and the set temperature threshold to determine their magnitudes If , go to step S2; If , turn on the solenoid valve and then proceed to the next step; S6. Read the temperature of the second temperature sensor again , and judge the temperature and the set temperature threshold to determine their magnitudes If , continue to open the solenoid valve until and then stop; If , close the solenoid valve and then proceed to the next step; S7. Read the temperature of the second temperature sensor again , and judge the temperature and the set temperature threshold to determine their magnitudes; If , then go to step S4; If , the heat control device of the balcony wall-mounted solar water heater ends its operation.

2. A method for controlling the heat of a balcony wall-mounted solar water heater according to claim 1, characterized in that, Step S2 is specifically as follows: The first temperature sensor collects the temperature at the outlet of the collector, the second temperature sensor collects the temperature in the middle of the water tank, and the third temperature sensor collects the temperature at the outlet of the water tank. The sampling frequency of the three temperature sensors is 1 Hz.

3. A method for controlling the heat of a balcony wall-mounted solar water heater according to claim 2, characterized in that, Step S4 is specifically as follows: (1) Calculate the dynamic temperature difference and the temperature rise rate: According to the temperature , and calculate the dynamic temperature difference , and the calculation formula is as follows: ； Calculate the temperature rise rate of the second temperature sensor in units of 60 s. The calculation formula is as follows: ， Among them, represents the temperature of the second temperature sensor at time represents the temperature of the second temperature sensor at time; (2) Control parameters: The control parameters include the proportionality coefficient and the integral coefficient; If , fixed control parameters are adopted, and the fixed control parameters include a proportional coefficient and an integral coefficient ; If , then adjust the control parameters. The adjusted control parameters include the proportional coefficient and the integral coefficient . The calculation formula for adjusting the control parameters is as follows: ， ， Among them, represents the adjusted proportionality coefficient, represents the adjusted integral coefficient, represents the decay factor at the moment.

4. A heat control method for a balcony wall-mounted solar water heater according to claim 3, characterized in that, Step S5 is specifically as follows: According to the dynamic temperature difference and the control parameter, calculate the control quantity C. The control parameter is a fixed control parameter 、 or the adjusted control parameter , if not satisfied , the control quantity calculation formula is as follows: ， If the following conditions are met , the calculation formula for the control quantity is as follows: ； Then, convert the control quantity into a 4~20mA current signal , and the calculation formula is as follows: , Among them, and respectively represent the maximum and minimum values of the preset control quantity; The current signal is then used to adjust the opening degree of the electric control valve , and the calculation formula is as follows: 。 5. A heat control system for a balcony wall-mounted solar water heater, which executes a heat control method for a balcony wall-mounted solar water heater as described in any one of claims 1-4, characterized in that, It includes the following modules: Temperature data acquisition module: Collect the temperatures of the first temperature sensor, the second temperature sensor, and the third temperature sensor; Water tank heating module: Set temperature threshold , compare the temperature data collected by the temperature data acquisition module with the temperature threshold to determine whether it is necessary to open the electric control valve to heat the water tank; Temperature regulation module: Set the temperature threshold , compare the temperature data collected by the temperature data acquisition module with the temperature threshold, and determine whether the electric control valve needs to be closed; Control parameter adjustment module: Calculate the dynamic temperature difference and the temperature rise rate of the second temperature sensor based on the temperature of the second temperature sensor adjusted by the temperature adjustment module, and the temperatures of the second temperature sensor and the third temperature sensor. Determine whether it is necessary to adjust the control parameters according to the set temperature rise rate threshold , and determine whether it is necessary to adjust the control parameters; Electric control valve adjustment module: Compare the temperature of the second temperature sensor after adjustment by the comparison control parameter adjustment module with the temperature threshold to determine whether the solenoid valve needs to be opened; Pressure relief protection module: When it is judged by the electric control valve adjustment module that the solenoid valve needs to be opened, open the solenoid valve to drain water for cooling; Restart the heating module after pressure relief: Compare the temperature of the second temperature sensor that has drained water and cooled down with the temperature threshold to determine whether the solenoid valve needs to be continuously opened to drain water and reduce pressure.

6. A heat control device for a balcony wall-mounted solar water heater, which is controlled by a heat control system for a balcony wall-mounted solar water heater and executes a heat control method for a balcony wall-mounted solar water heater as described in any one of claims 1-4, characterized in that: It includes a collector, a water tank, a medium pipeline, an electric control valve, a solenoid valve, a first temperature sensor, a second temperature sensor, a third temperature sensor, a controller, and a water pipeline; The collector is installed at the lower part of the outdoor wall of the balcony, the water tank is installed at the upper part of the indoor wall of the balcony. The second temperature sensor, the controller, and the water pipeline are provided on the water tank. The water pipeline includes the water pipeline for water flowing out of the water tank and the water pipeline for water flowing into the water tank. The third temperature sensor and the solenoid valve are provided on the water pipeline for water flowing out of the water tank. The collector and the water tank are connected through the medium pipeline. The electric control valve is provided on the medium pipeline for the medium flowing from the water tank to the collector, and the first temperature sensor is provided on the medium pipeline for the medium flowing from the collector to the water tank.

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