Intelligent control method of solar water heating system

Abstract

The intelligent control method of the solar water heating system comprises the following steps that S1, a temperature sensor is arranged at a water outlet pipe of a water storage tank, and the temperature sensor is used for detecting and obtaining the temperature of water to be discharged in the water storage tank in real time; s2, the solar radiation quantity collected by the solar heat collector on that day is obtained; s3, the set temperature of water to be heated in the water storage tank is obtained; s4, the maximum water storage capacity of the water storage tank on the day is obtained according to the solar radiation quantity and the set temperature; s5, when the temperature of the to-be-discharged water in the water storage tank exceeds the threshold value of the set temperature, the controller controls the solar heat collector to stop heating, and when the temperature of the to-be-discharged water in the water storage tank is lower than the threshold value of the set temperature, the controller controls the solar heat collector to continue heating; the technical problem that an existing solar water heating system cannot control the temperature of hot water according to the will of a user is solved.

Description

Technical Field

[0001] The present application relates to the technical field of solar water heating systems, and in particular to an intelligent control method for solar water heating systems. Background Art

[0002] At present, solar water heaters are widely used in residential areas in my country, but the temperature of hot water varies with the weather, that is, the solar radiation, so users cannot set the hot water temperature according to their needs. For example, in winter, the solar radiation is weak, and the solar water heater cannot heat all the water in the water tank to the appropriate temperature, resulting in low hot water temperature, which cannot meet the user's hot water temperature needs. In summer, the solar radiation is very strong, and solar energy can heat the water in the water tank to above 90°C. However, there are certain safety hazards when using hot water with too high a temperature. In spring and autumn, the hot water temperature changes with the weather. Users either use hot water with a low temperature or use hot water with too high a temperature by adding cold water. Therefore, how to obtain the appropriate water temperature according to the user's wishes is a technical problem that needs to be solved urgently.

[0003] In view of the above problems existing in the prior art, the present application proposes an intelligent control method for a solar water heating system to solve the problems. Summary of the invention

[0004] The embodiment of the present application provides an intelligent control method for a solar water heating system, which is used to solve the technical problem that the existing solar water heating system can only adjust the hot water temperature according to the size of the weather solar radiation, and cannot control the hot water temperature according to the user's wishes, and therefore cannot meet the user's needs.

[0005] In view of this, the present application provides an intelligent control method for a solar water heating system, comprising the following steps:

[0006] S1. A temperature sensor is provided at the outlet pipe of the water tank of the solar water heating system, wherein the temperature sensor is used to detect and obtain the temperature of the water to be discharged from the water tank in real time;

[0007] S2, obtaining the solar radiation collected by the solar collector on that day;

[0008] S3, obtaining the set temperature of the water to be heated in the water storage tank;

[0009] S4. Obtaining the maximum water storage capacity of the water tank on that day according to the solar radiation and the set temperature;

[0010] S5. When the temperature of the water to be discharged in the water storage tank exceeds the threshold value of the set temperature, the controller controls the solar collector to stop heating. When the temperature of the water to be discharged in the water storage tank is lower than the threshold value of the set temperature, the controller controls the solar collector to continue heating.

[0011] Optionally, in step S1, an electric heater and at least one of the temperature sensors are provided in the water storage tank, and the electric heater and the temperature sensor are electrically connected to the controller respectively.

[0012] Optionally, the electric heater and the temperature sensor are electrically connected to the controller respectively. The control method includes the following steps:

[0013] The temperature sensor detects and obtains the water temperature in the water storage tank in real time, and transmits the water temperature data to the controller in real time.

[0014] The controller is provided with multi-stage preset comfortable water temperatures for different time periods.

[0015] The controller receives the real-time water temperature transmitted by the temperature sensor, and compares it with the preset comfortable water temperatures for different time periods. If the real-time water temperature is lower than the comfortable water temperature, it determines whether the solar radiation is sufficient according to the change of the detected water temperature within a certain period of time.

[0016] When the controller determines that the solar radiation is insufficient, the controller controls the electric heater to work, starts the electric heater to heat. When the real-time water temperature reaches the comfortable water temperature, the controller controls the electric heater to stop working.

[0017] When the controller determines that the solar radiation is sufficient, the controller controls the electric heater not to work; when the real-time water temperature is greater than or equal to the preset water temperature, the controller controls the electric heater not to work.

[0018] Optionally, the multi-stage preset comfortable water temperatures for different time periods set by the controller are: 70 °C at 6 o'clock; 65 °C at 7 o'clock; 60 °C at 8 o'clock; 55 °C at 9 o'clock; 50 °C at 10 o'clock; 40 °C at 11 o'clock, 12 o'clock and 13 o'clock; 50 °C at 14 o'clock; 55 °C at 15 o'clock; 60 °C at 16 o'clock; 65 °C at 17 o'clock; 70 °C at 18 o'clock.

[0019] Optionally, in step S2, the specific process of obtaining the solar radiation amount collected by the solar collector on the current day includes:

[0020] The installation information of the solar thermal collector is obtained, and the optimal daily radiation average value, the medium daily radiation average value and the worst daily radiation average value of the solar thermal collector at the installation location are obtained, and the solar radiation that the solar thermal collector can collect under the three daily radiation average values ​​is obtained according to the installation information.

[0021] Optionally, the installation information includes the installation location, installation orientation, heat collection area and installation inclination angle of the solar collector.

[0022] Optionally, in step S3, the specific process of obtaining the set temperature of the water to be heated in the water storage tank includes:

[0023] The specific preset temperature information to be set is input through the temperature setting button, and the preset temperature information is sent to the controller to complete the acquisition of the set temperature of the water to be heated in the water storage tank.

[0024] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0025] The present application provides an intelligent control method for a solar water heating system. The method comprises the following steps: setting a temperature sensor at the outlet pipe of a water tank of the solar water heating system, wherein the temperature sensor is used to detect and obtain the temperature of water to be discharged from the water tank in real time; obtaining the amount of solar radiation collected by a solar collector on the day; obtaining the set temperature of water to be heated in the water tank; and obtaining the maximum water storage capacity of the water tank on the day according to the solar radiation and the set temperature; when the temperature of water to be discharged from the water tank exceeds the threshold value of the set temperature, the controller controls the solar collector to stop heating, and when the water tank When the temperature of the water to be discharged is lower than the threshold of the set temperature, the controller controls the solar collector to continue heating, thereby enabling the user to select the required hot water temperature. The system can intelligently provide the maximum amount of water at the hot water temperature according to the weather of the day, thereby improving the use quality of the solar water heater. When the solar radiation is not strong, the water volume is controlled to ensure that the water temperature in the water tank reaches the set temperature. When the solar radiation is strong, the flow controller is controlled to stop the water flow to stop heating, thereby ensuring that the water temperature in the water tank does not exceed or is lower than a certain temperature threshold of the set temperature. The appropriate water temperature is obtained according to the user's wishes.

[0026] The water temperature in the water storage tank is also detected in real time through a temperature sensor, and the water temperature data is transmitted to the controller in real time; the controller is provided with multi-stage preset comfortable water temperatures for different time periods; the controller receives the real-time water temperature transmitted by the temperature sensor and compares it with the preset comfortable water temperatures for different time periods. If the real-time water temperature is lower than the comfortable water temperature, it is determined whether the solar radiation is sufficient according to the change in the detected water temperature within a certain period of time; when the controller determines that the solar radiation is insufficient, the controller controls the electric heater to work and starts heating. When the real-time water temperature reaches the comfortable water temperature, the controller controls the electric heater to stop working; when the controller determines that the solar radiation is sufficient, the controller controls the electric heater not to work; when the real-time water temperature is greater than or equal to the preset water temperature, the controller controls the electric heater not to work, so that the comfortable water temperature can be achieved in each time period. This not only saves timing settings but also meets the high requirements of users for water temperature when the solar radiation is not sufficient. While fully exerting the advantages of solar water heaters such as energy conservation, environmental protection, and low carbon, it is more user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a step diagram of an intelligent control method for a solar water heating system provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to enable those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application.

[0030] For easy understanding, please refer to Figure 1 , the present invention provides an intelligent control method for a solar water heating system, including the following steps:

[0031] S1. A temperature sensor is arranged at the outlet pipe of the water storage tank of the solar water heating system, and the temperature sensor is used to detect and obtain the temperature of the water to be discharged in the water storage tank in real time; specifically, an electric heater and at least one temperature sensor are arranged in the water storage tank, and the electric heater and the temperature sensor are respectively electrically connected to the controller.

[0032] S2. Obtain the amount of solar radiation collected by the solar collector on that day; specifically, the specific process of obtaining the amount of solar radiation collected by the solar collector on that day includes: obtaining the installation information of the solar collector, and obtaining the optimal daily radiation average value, the medium daily radiation average value and the worst daily radiation average value of the solar collector at the installation location, and obtaining the solar radiation that the solar collector can collect under the three daily radiation average values ​​according to the installation information, and the installation information includes the installation location, installation orientation, collection area and installation inclination of the solar collector.

[0033] S3. Obtain the set temperature of the water to be heated in the water tank; specifically, the specific process of obtaining the set temperature of the water to be heated in the water tank includes: inputting the specific preset temperature information to be set through the temperature setting button, and sending the preset temperature information to the controller to complete the acquisition of the set temperature of the water to be heated in the water tank.

[0034] S4. Obtaining the maximum water storage capacity of the water tank on that day according to the solar radiation and the set temperature;

[0035] S5. When the temperature of the water to be discharged from the water tank exceeds the threshold value of the set temperature, the controller controls the solar collector to stop heating. When the temperature of the water to be discharged from the water tank is lower than the threshold value of the set temperature, the controller controls the solar collector to continue heating.

[0036] This allows users to select the required hot water temperature, and the system can intelligently provide the maximum amount of water at that hot water temperature based on the weather of the day, thereby improving the use quality of the solar water heater. When solar radiation is not strong, the water volume is controlled to ensure that the water temperature in the water tank reaches the set temperature. When solar radiation is strong, the flow controller is controlled to stop the water flow and stop heating, ensuring that the water temperature in the water tank does not exceed or fall below a certain temperature threshold of the set temperature, thereby achieving the desired water temperature according to the user's wishes.

[0037] Specifically, the solar water heating system includes: a solar water heater, a flow controller, a temperature sensor, and an intelligent control panel; the solar water heater includes a water storage tank, a circulation pipeline, a water pump, and a solar collector. The water pump is installed on the circulation pipeline, and the solar collector is connected to the water storage tank through the circulation pipeline. The solar collector controllably heats the water to be heated in the water storage tank through the water pump. The water storage tank is provided with a water inlet pipe and a water outlet pipe; the flow controller is arranged on the water inlet pipe to control the water inlet flow of the water storage tank, and at the same time, the flow controller also controls the water pump to circulate and heat the water to be heated in the water storage tank; the temperature sensor is arranged on the water outlet pipe to obtain the temperature of the water to be discharged from the water storage tank. The intelligent control panel includes: a radiation amount setting module, a water temperature setting module, a calculation module, a detection module, a first display module, a second display module, a third display module, and a fourth display module; the radiation amount setting module includes an installation setting module and a weather setting module. The installation setting module is used to obtain the installation information of the solar collector, and obtain the average optimal daily radiation amount, the average medium daily radiation amount, and the average worst daily radiation amount of the solar collector at the installation location, and respectively obtain the solar radiation amount that the solar collector can collect under the three average daily radiation amounts according to the installation information; the weather setting module is used to obtain one of the solar radiation amounts that the solar collector can collect under the three average daily radiation amounts; the water temperature setting module is used to obtain the set temperature of the water to be heated in the water storage tank; the calculation module is used to obtain the maximum water storage capacity of the water storage tank on the current day according to the solar radiation amount and the set temperature obtained by the weather setting module, and at the same time, control the water inlet amount of the water storage tank to reach the maximum water inlet amount through the flow controller; the detection module is used to control the solar collector to stop heating when the temperature sensor detects that the temperature of the water to be discharged from the water storage tank exceeds the threshold of the set water temperature, and control the solar collector to continue heating when it detects that the temperature of the water to be discharged from the water storage tank is lower than the threshold of the set water temperature; the first display module on the intelligent control panel is used to display information such as the installation location, installation orientation, heat collection area, and installation inclination; the second display module is used to display the current date and the current weather condition; the third display module is used to display the set water temperature and the actual water temperature in the water storage tank; the fourth display module is used to display the heat collection amount of the solar collector and the maximum water inlet amount of the water storage tank. When the user sets the solar radiation situation on the current day, it is equivalent to selecting one of the three average radiation amounts in the current month. The fourth display module will display the heat collection amount of the solar collector on the current day. At the same time, when the user sets the set water temperature, the fourth display module will display the maximum water inlet amount that can reach the set water temperature under the heat collection amount of the solar collector on the current day.

[0038] Further, the electric heater and the temperature sensor are respectively electrically connected to the controller. The control method includes the following steps: The temperature sensor detects and obtains the water temperature in the water storage tank in real time and transmits the water temperature data to the controller in real time; The controller is provided with multi-stage preset comfortable water temperatures for different time periods, and the multi-stage preset comfortable water temperatures for different time periods are as follows: 70°C at 6 o'clock; 65°C at 7 o'clock; 60°C at 8 o'clock; 55°C at 9 o'clock; 50°C at 10 o'clock; 40°C at 11 o'clock, 12 o'clock and 13 o'clock; 50°C at 14 o'clock; 55°C at 15 o'clock; 60°C at 16 o'clock; 65°C at 17 o'clock; 70°C at 18 o'clock; The controller receives the real-time water temperature transmitted by the temperature sensor and compares it with the preset comfortable water temperatures for different time periods. If the real-time water temperature is lower than the comfortable water temperature, it determines whether the solar radiation is sufficient according to the change in the detected water temperature within a certain period of time; When the controller determines that the solar radiation is insufficient, the controller controls the electric heater to work and starts the electric heater to heat. When the real-time water temperature reaches the comfortable water temperature, the controller controls the electric heater to stop working; When the controller determines that the solar radiation is sufficient, the controller controls the electric heater to stop working; When the real-time water temperature is greater than or equal to the preset water temperature, the controller controls the electric heater to stop working. Thus, the comfortable water temperature can be achieved in each time period, which not only saves the timing setting, but also meets the high requirements of users for the water temperature when the solar radiation amount is not satisfied. While fully exerting the advantages of solar water heaters such as energy conservation, environmental protection, and low carbon, it is more user-friendly.

[0039] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An intelligent control method for a solar water heating system, characterized in that: The following steps are involved: S1. A temperature sensor is provided at the outlet pipe of the water tank of the solar water heating system, wherein the temperature sensor is used to detect and obtain the temperature of the water to be discharged from the water tank in real time; S2, obtaining the solar radiation collected by the solar collector on that day; S3, obtaining the set temperature of the water to be heated in the water storage tank; S4. Obtaining the maximum water storage capacity of the water tank on that day according to the solar radiation and the set temperature; S5. When the temperature of the water to be discharged from the water tank exceeds the threshold value of the set temperature, the controller controls the solar collector to stop heating. When the temperature of the water to be discharged from the water tank is lower than the threshold value of the set temperature, the controller controls the solar collector to continue heating.

2. The intelligent control method of a solar water heating system according to claim 1, characterized in that: In step S1, an electric heater and at least one temperature sensor are provided in the water storage tank, and the electric heater and the temperature sensor are electrically connected to the controller respectively.

3. The intelligent control method of a solar water heating system according to claim 2, characterized in that: The electric heater and the temperature sensor are electrically connected to the controller respectively, and the control method comprises the following steps: The temperature sensor detects and obtains the water temperature in the water tank in real time, and transmits the water temperature data to the controller in real time; The controller is provided with multiple stages of comfortable water temperature for different time periods; The controller receives the real-time water temperature transmitted by the temperature sensor and compares it with the preset comfortable water temperature in different time periods. If the real-time water temperature is lower than the comfortable water temperature, the controller determines whether the solar radiation is sufficient or not according to the change of the water temperature detected within a certain period of time. When the controller determines that the solar radiation is insufficient, the controller controls the electric heater to work and starts the electric heater to start heating. When the real-time water temperature reaches the comfortable water temperature, the controller controls the electric heater to stop working. When the controller determines that the solar radiation is sufficient, the controller controls the electric heater not to work; when the real-time water temperature is greater than or equal to the preset water temperature, the controller controls the electric heater not to work.

4. The intelligent control method of a solar water heating system according to claim 3, characterized in that: The controller is equipped with multi-stage pre-set comfortable water temperatures for different time periods: 70℃ at 6 o'clock; 65℃ at 7 o'clock; 60℃ at 8 o'clock; 55℃ at 9 o'clock; 50℃ at 10 o'clock; 40℃ at 11 o'clock, 12 o'clock and 13 o'clock; 50℃ at 14 o'clock; 55℃ at 15 o'clock; 60℃ at 16 o'clock; 65℃ at 17 o'clock; and 70℃ at 18 o'clock.

5. The intelligent control method of a solar water heating system according to claim 1, characterized in that: In step S2, the specific process of obtaining the solar radiation collected by the solar thermal collector on the day includes: The installation information of the solar thermal collector is obtained, and the optimal daily radiation average value, the medium daily radiation average value and the worst daily radiation average value of the solar thermal collector at the installation location are obtained, and the solar radiation that the solar thermal collector can collect under the three daily radiation average values ​​is obtained according to the installation information.

6. The intelligent control method of a solar water heating system according to claim 5, characterized in that: The installation information includes the installation location, installation orientation, heat collection area and installation inclination angle of the solar thermal collector.

7. The intelligent control method of a solar water heating system according to claim 1, characterized in that: In step S3, the specific process of obtaining the set temperature of the water to be heated in the water storage tank includes: The specific preset temperature information to be set is input through the temperature setting button, and the preset temperature information is sent to the controller to complete the acquisition of the set temperature of the water to be heated in the water storage tank.

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