Solar water heating and recycling system

Abstract

This invention discloses a solar water heating and recovery system, relating to the field of solar water heating and recovery. The system includes a support module, a collector assembly, an insulated water tank, an electric heating module, a recovery module, a water supply module, a first temperature monitoring module, a water level monitoring module, a second temperature monitoring module, and a processor. The processor is connected to the electric heating module, the recovery module, the water supply module, the first temperature monitoring module, the water level monitoring module, and the second temperature monitoring module. The processor controls the operation of the electric heating module, the recovery module, and the water supply module based on the monitored water temperature and water level. This solar water heating and recovery system can effectively recover and utilize excess heat, using this heat to preheat the cold water entering the collector assembly, thereby improving overall energy efficiency, reducing energy waste, and ensuring that the hot water in the insulated water tank is maintained above the set temperature for normal supply and use.

Description

Technical Field

[0001] This invention relates to the field of solar water heating and recycling technology, specifically to a solar water heating and recycling system. Background Technology

[0002] With the continuous growth of global energy demand and the increasing awareness of environmental protection, the utilization of renewable energy has become increasingly important. As a clean and renewable energy source, solar energy is particularly widely used in hot water supply systems.

[0003] While traditional solar water heating systems can effectively utilize solar energy to heat water, they have shortcomings in system efficiency, system control, and energy recovery. For example, traditional systems often lack effective insulation measures, resulting in significant heat loss; at the same time, they cannot guarantee a stable supply of hot water during cloudy or rainy weather or when solar energy is insufficient; furthermore, there is a lack of effective mechanisms for recovering and utilizing excess heat in the system.

[0004] Therefore, there is an urgent need in the market for a solar water heating and recycling system. Such a system can not only improve energy efficiency and reduce energy waste, but also provide a more stable and reliable hot water supply to meet the diverse needs of users. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a solar water heating and recovery system, which solves the problems of traditional solar water heating systems often lacking effective insulation measures, resulting in significant heat loss; at the same time, they cannot guarantee a stable supply of hot water during cloudy or rainy weather or when solar energy is insufficient; and there is a lack of effective recovery and utilization mechanisms for excess heat in the system.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a solar water heating and recovery system comprising:

[0007] Support module;

[0008] A solar collector assembly, which is mounted on a support module, is used to absorb solar energy to heat water.

[0009] An insulated water tank is located above the solar collector assembly and is used for storing and keeping hot water warm.

[0010] An electric heating module is disposed on one side of the solar collector assembly and the insulated water tank;

[0011] The recycling module is located on the other side of the insulated water tank;

[0012] A water delivery module, wherein the water delivery module is disposed on one side of the recycling module;

[0013] A first temperature monitoring module is installed on the solar collector assembly and is used to monitor the water temperature inside the solar collector assembly.

[0014] A water level monitoring module is installed inside the insulated water tank and is used to monitor the water level height inside the insulated water tank.

[0015] The second temperature monitoring module is installed inside the insulated water tank and is used to monitor the water temperature inside the insulated water tank.

[0016] The processor is connected to the electric heating module, the recovery module, the water supply module, the first temperature monitoring module, the water level monitoring module, and the second temperature monitoring module. The processor controls the operation of the electric heating module, the recovery module, and the water supply module based on the monitored water temperature value in the solar collector assembly, the water level height in the insulated water tank, and the water temperature value in the insulated water tank.

[0017] Preferably, the support module includes:

[0018] Support frame;

[0019] The first bottom support rod is fixedly connected to the support frame;

[0020] The first connecting rod is disposed above the first bottom support rod and is fixedly connected to the support frame;

[0021] The second bottom support rod is located on one side of the first bottom support rod and is fixedly connected to the support frame.

[0022] The second connecting rod is disposed on one side of the first connecting rod and is fixedly connected to the support frame;

[0023] A tray, which is fixedly connected to the top of the support frame;

[0024] The support rod is fixedly connected to the top of the support frame.

[0025] Preferably, the bottom end of the solar collector assembly is mounted on the first bottom support rod, and the top end of the solar collector assembly is mounted on the first connecting rod.

[0026] Preferably, a connecting pipe is provided at the lower side of the insulated water tank, one end of the connecting pipe is connected to the first connecting rod, and the other end of the connecting pipe is connected to the insulated water tank.

[0027] A first solenoid valve is installed on the connecting pipe;

[0028] A water supply pipe is installed at the bottom of the insulated water tank.

[0029] Preferably, the electric heating module includes:

[0030] A solar photovoltaic panel is installed between the second base support rod and the second connecting rod;

[0031] A storage battery, which is mounted on a tray;

[0032] A power transmission line, one end of which is fixedly connected to a storage battery;

[0033] An electric heating rod assembly is fixedly connected to the other end of a power transmission line and is disposed within a solar collector assembly.

[0034] Preferably, the recycling module includes:

[0035] A heat exchanger is provided with a hot water inlet, a hot water outlet, a cold water inlet, and a cold water outlet. The hot water inlet and the cold water outlet are located at the bottom of the heat exchanger, and the hot water outlet and the cold water inlet are located at the top of the heat exchanger.

[0036] A hot water inlet pipe, one end of which is connected to a hot water inlet and the other end of which is connected to an insulated water tank;

[0037] The second solenoid valve is installed on the hot water inlet pipe;

[0038] A hot water output pipe, one end of which is connected to a hot water outlet.

[0039] Preferably, the water delivery module includes:

[0040] A water storage tank, which is connected to the other end of a hot water output pipe;

[0041] The first water supply pipe has one end connected to the water storage tank and the other end connected to the cold water inlet.

[0042] The third solenoid valve is installed on the first water supply pipe;

[0043] The second water supply pipe has one end connected to the cold water outlet and the other end connected to the solar collector assembly.

[0044] Preferably, the first temperature monitoring module includes a thermistor sensor, which is installed inside the solar collector assembly and connected to the processor. The resistance value of the thermistor sensor changes with the temperature of the water inside the solar collector assembly, and the change in resistance value is output as an electrical signal.

[0045] Preferably, the water level monitoring module includes a photoelectric water level sensor, which is installed inside the insulated water tank and connected to the processor. The photoelectric water level sensor detects the liquid level by the reflection characteristics of infrared light and determines the water level by measuring changes in light. The changes in light are output as an electrical signal.

[0046] Preferably, the second temperature monitoring module includes a thermistor sensor, which is installed inside the insulated water tank and connected to the processor. The resistance value of the thermistor sensor changes with the temperature of the water in the insulated water tank, and the change in resistance value is output through an electrical signal.

[0047] This invention discloses a solar water heating and recovery system, which has the following beneficial effects:

[0048] 1. This solar water heating and recovery system integrates a processor and a first temperature monitoring module, a water level monitoring module, and a second temperature monitoring module. It can monitor parameters such as water temperature and water level in real time, and automatically adjust the working status of the electric heating module, recovery module, and water supply module based on these parameters. This enables the effective recovery and utilization of excess heat, which is used to preheat the cold water entering the collector assembly. This improves the overall energy utilization efficiency, reduces energy waste, and ensures that the hot water in the insulated water tank is kept above the set temperature for normal supply and use.

[0049] 2. This solar water heating and recycling system is equipped with an electric heating module, which automatically activates to provide auxiliary heating when solar energy is insufficient, ensuring a continuous supply of hot water, improving the user experience, reducing dependence on traditional fossil fuels, lowering carbon emissions, and meeting the requirements of environmental protection and sustainable development. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of the present invention;

[0052] Figure 2 This is a schematic diagram of the supporting unit, electric heating module, and water conveying module of the present invention;

[0053] Figure 3 This is a schematic diagram of the recycling module structure of the present invention;

[0054] Figure 4 This is a schematic diagram of the heat exchanger structure of the present invention;

[0055] Figure 5 This is a partial cross-sectional view of the insulated water tank of the present invention;

[0056] Figure 6 This is a block diagram illustrating the principle of the present invention;

[0057] Figure 7 This is a flowchart illustrating the heating and recovery control process of the present invention.

[0058] In the diagram: 1. Support module; 11. Support frame; 12. First bottom support rod; 13. First connecting rod; 14. Second bottom support rod; 15. Second connecting rod; 16. Support plate; 17. Bearing rod; 2. Solar collector assembly; 3. Insulated water tank; 31. Connecting pipe; 32. First solenoid valve; 33. Water supply pipe; 4. Electric heating module; 41. Solar photovoltaic panel; 42. Battery; 43. Power transmission line; 44. Electric heating rod assembly; 5. Recovery module; 51. Heat exchanger; 511. Hot water inlet; 512. Hot water outlet; 513. Cold water inlet; 514. Cold water outlet; 52. Hot water input pipe; 53. Second solenoid valve; 54. Hot water output pipe; 6. Water supply module; 61. Water storage tank; 62. First water supply pipe; 63. Third solenoid valve; 64. Second water supply pipe; 7. First temperature monitoring module; 8. Water level monitoring module; 9. Second temperature monitoring module. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] This invention discloses a solar water heating and recovery system.

[0061] Example 1

[0062] According to the appendix Figure 1-7 As shown, including

[0063] Support module 1;

[0064] Solar collector assembly 2 is mounted on support module 1 and is used to absorb solar energy to heat water.

[0065] Insulated water tank 3 is located above the collector assembly 2 and is used for storing and keeping hot water warm.

[0066] Electric heating module 4 is located on one side of the collector assembly 2 and the insulated water tank 3;

[0067] Recycling module 5 is located on the other side of the insulated water tank 3;

[0068] Water delivery module 6 is located on one side of the recycling module 5;

[0069] The first temperature monitoring module 7 is installed on the solar collector assembly 2 and is used to monitor the water temperature inside the solar collector assembly 2.

[0070] Water level monitoring module 8 is installed inside the insulated water tank 3 and is used to monitor the water level height inside the insulated water tank 3.

[0071] The second temperature monitoring module 9 is installed inside the insulated water tank 3 and is used to monitor the water temperature inside the insulated water tank 3.

[0072] The processor is connected to the electric heating module 4, the recovery module 5, the water supply module 6, the first temperature monitoring module 7, the water level monitoring module 8, and the second temperature monitoring module 9. The processor controls the operation of the electric heating module 4, the recovery module 5, and the water supply module 6 based on the monitored water temperature values ​​in the solar collector assembly 2, the water level in the insulated water tank 3, and the water temperature in the insulated water tank 3. By setting up the processor and automatically controlling the operation of the electric heating module 4, the recovery module 5, and the water supply module 6 based on the monitored water temperature values ​​in the solar collector assembly 2, the water level in the insulated water tank 3, and the water temperature in the insulated water tank 3, the system achieves automated operation, reduces manual operation, and improves ease of use.

[0073] Furthermore, support module 1 includes:

[0074] Support frame 11;

[0075] The first bottom support rod 12 is fixedly connected to the support frame 11;

[0076] The first connecting rod 13 is located above the first bottom support rod 12 and is fixedly connected to the support frame 11.

[0077] The second bottom support rod 14 is disposed on one side of the first bottom support rod 12 and is fixedly connected to the support frame 11.

[0078] The second connecting rod 15 is disposed on one side of the first connecting rod 13 and is fixedly connected to the support frame 11.

[0079] The tray 16 is fixedly connected to the top of the support frame 11;

[0080] The support rod 17 is fixedly connected to the top of the support frame 11.

[0081] Furthermore, the bottom end of the solar collector assembly 2 is mounted on the first bottom support rod 12, and the top end of the solar collector assembly 2 is mounted on the first connecting rod 13.

[0082] Furthermore, a connecting pipe 31 is provided at the lower side of the insulated water tank 3. One end of the connecting pipe 31 is connected to the first connecting rod 13, and the other end of the connecting pipe 31 is connected to the insulated water tank 3.

[0083] A first solenoid valve 32 is provided on the connecting pipe 31;

[0084] A water supply pipe 33 is installed at the bottom of the insulated water tank 3. The solar collector assembly 2 is mounted on the support module 1 and can absorb solar energy and convert it into heat energy to heat the water. The first temperature monitoring module 7 is installed inside the solar collector assembly 2 to monitor the water temperature in the solar collector assembly 2 in real time and transmit the monitoring data to the processor. When the water temperature reaches the set value, the processor can control the relevant modules to perform corresponding operations, such as opening the first solenoid valve 32 on the connecting pipe 31 to allow hot water to flow into the insulated water tank 3 for storage and insulation.

[0085] Furthermore, the electric heating module 4 includes:

[0086] Solar photovoltaic panel 41 is installed between the second bottom support rod 14 and the second connecting rod 15;

[0087] Battery 42 is mounted on tray 16;

[0088] The power transmission line 43 has one end fixedly connected to the storage battery 42.

[0089] The electric heating rod assembly 44 is fixedly connected to the other end of the power transmission line 43. The electric heating rod assembly 44 is installed inside the solar collector assembly 2. By setting the electric heating module 4, when there is sufficient sunlight, the solar photovoltaic panel 41 can convert solar energy into electrical energy and then store the electrical energy in the battery 42. When there is insufficient solar energy, the battery 42 discharges so that the electric heating rod assembly 44 can assist in heating the water in the solar collector assembly 2, ensuring a continuous supply of hot water, improving the user experience, reducing dependence on traditional fossil energy, reducing carbon emissions, and meeting the requirements of environmental protection and sustainable development.

[0090] Furthermore, recycling module 5 includes:

[0091] The heat exchanger 51 is provided with a hot water inlet 511, a hot water outlet 512, a cold water inlet 513 and a cold water outlet 514. The hot water inlet 511 and the cold water outlet 514 are located at the bottom of the heat exchanger 51, and the hot water outlet 512 and the cold water inlet 513 are located at the top of the heat exchanger 51.

[0092] Hot water inlet pipe 52, one end of which is connected to hot water inlet 511 and the other end is connected to insulated water tank 3;

[0093] The second solenoid valve 53 is installed on the hot water inlet pipe 52;

[0094] A hot water output pipe 54 is connected at one end to a hot water outlet 512. A recovery module 5 is located on the other side of the insulated water tank 3. When hot water is needed, the processor controls the recovery module 5 to operate. Hot water flows from the insulated water tank 3 into the heat exchanger 51 through the hot water input pipe 52, where it exchanges heat with cold water, transferring residual heat to the cold water. A second solenoid valve 53 is located on the hot water input pipe 52 to control the flow rate of the hot water. The hot water output pipe 54 outputs the heat-exchanged hot water for user use or re-enters the water supply module 6.

[0095] Furthermore, the water delivery module 6 includes:

[0096] Water storage tank 61 is connected to the other end of hot water output pipe 54;

[0097] The first water supply pipe 62 has one end connected to the water storage tank 61 and the other end connected to the cold water inlet 513.

[0098] The third solenoid valve 63 is installed on the first water supply pipe 62;

[0099] The second water supply pipe 64 is connected at one end to the cold water outlet 514 and at the other end to the collector assembly 2. A water supply module 6 is located on one side of the recovery module 5. A water storage tank 61 is connected to the hot water output pipe 54 and is used to store the hot water after heat exchange. The first water supply pipe 62 transports the cold water from the storage tank 61 to the cold water inlet 513 of the heat exchanger 51 for heat exchange with the hot water. A third solenoid valve 63 is located on the first water supply pipe 62 and is used to control the flow rate of the cold water. The cold water after heat exchange flows back to the collector assembly 2 through the second water supply pipe 64 for further heating.

[0100] Example 2

[0101] According to the appendix Figure 1-7 As shown, including

[0102] Support module 1;

[0103] Solar collector assembly 2 is mounted on support module 1 and is used to absorb solar energy to heat water.

[0104] Insulated water tank 3 is located above the collector assembly 2 and is used for storing and keeping hot water warm.

[0105] Electric heating module 4 is located on one side of the collector assembly 2 and the insulated water tank 3;

[0106] Recycling module 5 is located on the other side of the insulated water tank 3;

[0107] Water delivery module 6 is located on one side of the recycling module 5;

[0108] The first temperature monitoring module 7 is installed on the solar collector assembly 2 and is used to monitor the water temperature inside the solar collector assembly 2.

[0109] Water level monitoring module 8 is installed inside the insulated water tank 3 and is used to monitor the water level height inside the insulated water tank 3.

[0110] The second temperature monitoring module 9 is installed inside the insulated water tank 3 and is used to monitor the water temperature inside the insulated water tank 3.

[0111] The processor is connected to the electric heating module 4, the recovery module 5, the water supply module 6, the first temperature monitoring module 7, the water level monitoring module 8, and the second temperature monitoring module 9. The processor controls the operation of the electric heating module 4, the recovery module 5, and the water supply module 6 based on the monitored water temperature value in the solar collector assembly 2, the water level height in the insulated water tank 3, and the water temperature value in the insulated water tank 3.

[0112] Furthermore, the first temperature monitoring module 7 includes a thermistor sensor, which is installed inside the collector assembly 2 and connected to the processor. The resistance value of the thermistor sensor changes with the temperature of the water inside the collector assembly 2, and the change in resistance value is output through an electrical signal.

[0113] Furthermore, the water level monitoring module 8 includes a photoelectric water level sensor, which is installed inside the insulated water tank 3. The photoelectric water level sensor is connected to the processor. The photoelectric water level sensor detects the liquid level by the reflection characteristics of infrared light and determines the water level by measuring changes in light. The changes in light are output as an electrical signal.

[0114] Furthermore, the second temperature monitoring module 9 includes a thermistor sensor installed inside the insulated water tank 3. The thermistor sensor is connected to the processor, and its resistance value changes with the temperature of the water in the insulated water tank 3. This change in resistance is output as an electrical signal. By integrating the processor, the first temperature monitoring module 7, the water level monitoring module 8, and the second temperature monitoring module 9, the system can monitor parameters such as water temperature and water level in real time. Based on these parameters, it automatically adjusts the operating status of the electric heating module 4, the recovery module 5, and the water supply module 6. This allows for the effective recovery and utilization of excess heat, which is then used to preheat the cold water entering the collector assembly 2. This improves overall energy efficiency, reduces energy waste, and ensures that the hot water in the insulated water tank 3 remains above the set temperature for normal supply. This solar water heating and recovery system integrates solar heating, electric heating assistance, hot water storage, water level monitoring, water temperature monitoring, and waste heat recovery functions, meeting the hot water usage needs of different scenarios and improving the system's applicability and practicality.

[0115] Working principle: The solar collector assembly 2 is installed on the support module 1 to absorb solar energy and heat water. The first temperature monitoring module 7 monitors the water temperature in the solar collector assembly 2. When the monitored water temperature does not exceed the set value within a specified time, that is, when the solar energy is insufficient, the processor controls the electric heating module 4 to start. The electric energy generated by the solar photovoltaic panel 41 drives the electric heating rod assembly 44 to perform auxiliary heating until the monitored water temperature reaches the set value. At this time, the first solenoid valve 32 opens, and the heated water enters the heat preservation water tank 3 through the connecting pipe 31 for storage and heat preservation.

[0116] Next, the water level monitoring module 8 monitors the water level in the insulated water tank 3 to see if it has reached the set value, and transmits the signal to the processor. If the water level has not reached the set value, the water supply module 6 starts, the third solenoid valve 63 opens, and the water in the storage tank 61 flows through the first water supply pipe 62, the heat exchanger 51, and the second water supply pipe 64. At this time, the heat exchanger 51 does not work and continues to supply water to the solar collector assembly 2. The solar collector assembly 2 absorbs solar energy and heats the water. The above operation is repeated until the water level in the insulated water tank 3 reaches the set value.

[0117] Then, the second temperature monitoring module 9 monitors whether the water temperature in the insulated water tank 3 has dropped below the set value and transmits the signal to the processor. If it has not dropped below the set value, it continues to be stored in the insulated water tank 3 for normal supply. If it drops below the set value, the recovery module 5 is activated, the second solenoid valve 53 is opened, and the heat exchanger 51 receives hot water from the insulated water tank 3 through the hot water inlet 511 and receives cold water from the storage tank 61 through the cold water inlet 513. In the heat exchanger 51, the hot water and cold water exchange heat. After the hot water is cooled, it enters the hot water output pipe 54 through the hot water outlet 512 and is transported to the storage tank 61, which can neutralize the cold water in the storage tank 61. After the cold water is preheated, it enters the collector assembly 2 through the cold water outlet 514 for further heating, which improves the heating efficiency of the collector assembly 2 and ensures that the hot water in the insulated water tank 3 is above the set temperature for normal supply.

[0118] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A solar water heating and recovery system, characterized in that, include: Support module (1); Solar collector assembly (2), which is mounted on support module (1), is used to absorb solar energy to heat water; Insulated water tank (3), which is located above the collector assembly (2), is used for storing and keeping hot water warm; An electric heating module (4) is provided on one side of the collector assembly (2) and the insulated water tank (3); A recycling module (5) is located on the other side of the insulated water tank (3); A water delivery module (6) is disposed on one side of the recycling module (5); The first temperature monitoring module (7) is installed on the solar collector assembly (2) and is used to monitor the water temperature value inside the solar collector assembly (2). Water level monitoring module (8), the water level monitoring module (8) is installed in the insulated water tank (3), the water level monitoring module (8) is used to monitor the water level height in the insulated water tank (3); The second temperature monitoring module (9) is installed inside the insulated water tank (3) and is used to monitor the water temperature inside the insulated water tank (3). The processor is connected to the electric heating module (4), the recovery module (5), the water supply module (6), the first temperature monitoring module (7), the water level monitoring module (8), and the second temperature monitoring module (9). The processor controls the operation of the electric heating module (4), the recovery module (5), and the water supply module (6) based on the monitored water temperature value in the solar collector assembly (2), the water level height in the heat preservation tank (3), and the water temperature value in the heat preservation tank (3). The recycling module (5) includes: A heat exchanger (51) is provided with a hot water inlet (511), a hot water outlet (512), a cold water inlet (513) and a cold water outlet (514). The hot water inlet (511) and the cold water outlet (514) are located at the bottom of the heat exchanger (51), and the hot water outlet (512) and the cold water inlet (513) are located at the top of the heat exchanger (51). Hot water input pipe (52), one end of which is connected to hot water inlet (511) and the other end is connected to insulated water tank (3); The second solenoid valve (53) is installed on the hot water inlet pipe (52); Hot water output pipe (54), one end of which is connected to hot water outlet (512); The water delivery module (6) includes: A water storage tank (61) is connected to the other end of a hot water output pipe (54); The first water supply pipe (62) has one end connected to the water storage tank (61) and the other end connected to the cold water inlet (513); The third solenoid valve (63) is installed on the first water supply pipe (62); The second water supply pipe (64) has one end connected to the cold water outlet (514) and the other end connected to the solar collector assembly (2).

2. The solar water heating and recovery system according to claim 1, characterized in that, The support module (1) includes: Support frame (11); The first bottom support rod (12) is fixedly connected to the support frame (11); The first connecting rod (13) is located above the first bottom support rod (12) and is fixedly connected to the support frame (11); The second bottom support rod (14) is located on one side of the first bottom support rod (12) and is fixedly connected to the support frame (11); The second connecting rod (15) is disposed on one side of the first connecting rod (13) and is fixedly connected to the support frame (11); A tray (16) is fixedly connected to the top of the support frame (11); The support rod (17) is fixedly connected to the top of the support frame (11).

3. The solar water heating and recovery system according to claim 2, characterized in that, The bottom end of the collector assembly (2) is mounted on the first bottom support rod (12), and the top end of the collector assembly (2) is mounted on the first connecting rod (13).

4. The solar water heating and recovery system according to claim 2, characterized in that, A connecting pipe (31) is provided diagonally below the insulated water tank (3). One end of the connecting pipe (31) is connected to the first connecting rod (13), and the other end of the connecting pipe (31) is connected to the insulated water tank (3). A first solenoid valve (32) is provided on the connecting pipe (31); The bottom of the insulated water tank (3) is provided with a water supply pipe (33).

5. The solar water heating and recovery system according to claim 2, characterized in that, The electric heating module (4) includes: A solar photovoltaic panel (41) is installed between a second bottom support rod (14) and a second connecting rod (15); A storage battery (42) is mounted on a tray (16); A power transmission line (43), one end of which is fixedly connected to a storage battery (42); An electric heating rod assembly (44) is fixedly connected to the other end of a power transmission line (43) and is disposed inside the collector assembly (2).

6. The solar water heating and recovery system according to claim 1, characterized in that, The first temperature monitoring module (7) includes a thermistor sensor, which is installed inside the collector assembly (2). The thermistor sensor is connected to the processor. The resistance value of the thermistor sensor changes with the temperature of the water inside the collector assembly (2). The change in resistance value is output through an electrical signal.

7. The solar water heating and recovery system according to claim 1, characterized in that, The water level monitoring module (8) includes a photoelectric water level sensor, which is installed in the insulated water tank (3). The photoelectric water level sensor is connected to the processor. The photoelectric water level sensor detects the liquid level by the reflection characteristics of infrared light and judges the water level by measuring the change of light. The change of light is output through an electrical signal.

8. The solar water heating and recovery system according to claim 1, characterized in that, The second temperature monitoring module (9) includes a thermistor sensor, which is installed in the insulated water tank (3). The thermistor sensor is connected to the processor. The resistance value of the thermistor sensor changes with the temperature of the water in the insulated water tank (3). The change in resistance value is output through an electrical signal.

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