Auxiliary heating device of solar energy storage and air energy control system and control method of auxiliary heating device

Abstract

The invention provides an auxiliary heating device of a solar energy storage and air energy control system and a control method of the auxiliary heating device, and mainly relates to the technical field of solar heat utilization. An auxiliary heating device of a solar energy storage and air energy control system comprises a heating water tank, a heat-conducting medium box body, an air energy heating device, a supporting frame, a solar heating device, an energy storage water tank and a control device, and the supporting frame is fixedly provided with the heating water tank, the heat-conducting medium box body, the air energy heating device and the solar heating device. A first heat exchange pipeline is arranged between the heating water tank and the solar heating device, the first heat exchange pipeline is further connected with a heat-conducting medium box body, and a heat-conducting agent circulates in the first heat exchange pipeline. Through the modular design, solar energy and air energy can be comprehensively utilized, the heat energy transfer path and control logic are optimized, the efficient and energy-saving heating effect is achieved, the system is suitable for various scenes such as residences, commercial buildings and industrial places, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of solar thermal utilization, and specifically to a solar energy storage and air energy control system auxiliary heating device and a control method thereof. Background Art

[0002] Existing traditional heating equipment, such as wood-burning, coal-burning, and natural gas heating stoves, have a great impact on environmental pollution, uncontrollable safety hazards, relatively low thermal efficiency, and inconvenient fuel storage; electric heating stoves and air conditioners that rely on electricity to drive consume a lot of power and have high operating costs.

[0003] With the intensification of the global energy crisis and the high attention paid to environmental protection, traditional heating methods are gradually restricted due to problems such as high energy consumption and environmental pollution. As a clean and renewable energy source, solar energy is inexhaustible, but its energy supply is unstable at night or in rainy weather. Air-to-air heat pumps can use the heat energy in the air for heating, but their efficiency is greatly affected by the ambient temperature when used alone. Summary of the invention

[0004] In order to address the deficiencies of the prior art, the present invention provides a solar energy storage and air energy control system auxiliary heating device and a control method thereof, which can combine solar energy and air energy through modular design, and optimize through an effective energy storage and control system, optimize the heat energy transfer path and control logic, and can give full play to the advantages of both, make up for the shortcomings of single energy heating, and achieve efficient, stable and energy-saving heating effects, which has important practical significance and broad application prospects.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A solar energy storage and air energy control system auxiliary heating device comprises a heating water tank, a heat conducting medium box, an air energy heating device, a support frame, a solar energy heating device, an energy storage water tank and a control device, wherein the heating water tank, the heat conducting medium box, the air energy heating device and the solar energy heating device are fixedly mounted on the support frame respectively, a heat exchange pipeline 1 is provided between the heating water tank and the solar energy heating device, the heat exchange pipeline 1 is also connected to the heat conducting medium box, a heat conductive agent circulates in the heat exchange pipeline 1, a heat exchange pipeline 2 is provided between the heating water tank and the air energy heating device, a heat exchange pipeline 3 is connected between the heating water tank and the energy storage water tank, the control device is electrically connected to the air energy heating device and the solar energy heating device, and a domestic water heat exchange pipeline is also provided in the heating water tank.

[0006] The heat exchange pipeline 1 is connected between the heating water tank and the solar heating device. The solar heating device is provided with a vacuum heating tube, and the vacuum heating tube is connected to the heat exchange pipeline 1. The heating water tank is provided with a spiral tube, and the heat exchange pipeline 1 is connected to the spiral tube. The heat transfer medium pipeline in the vacuum heating tube is spiral.

[0007] A driving pump group is provided on one side of the heating water tank, and the driving pump group is electrically connected to the control device. The driving pump group includes driving pump 1, a compressor, and driving pump 2. The driving pump 1 controls the flow of the heat conductor in the heat exchange pipeline 1, the compressor controls the flow of the heat conductor in the heat exchange pipeline 2, and the driving pump 2 controls the flow of the heat conductor in the heat exchange pipeline 3.

[0008] The heat-conducting medium box body is provided with a heat-conducting medium adding port, and the heat-conducting medium box body is provided with a pressure balancing valve.

[0009] Control method: ①Solar energy priority mode: When the temperature of the heat transfer agent in the solar heating device is higher than the set temperature A, the control device controls the driving pump 1 to work, so that the heat transfer agent in the heat exchange pipeline 1 circulates and transfers heat from the solar heating device to the heating water tank. When the temperature of the heat transfer agent in the solar heating device is higher than the set temperature upper limit B, the control device controls the driving pump to stop working to avoid excessive water temperature and the generation of more scale; When the temperature of the water in the heating water tank is ≥55°C, the control device controls the driving pump 2 to work, driving the pump 2 to circulate the heat transfer agent in the heat exchange pipeline 3, transferring the heat of the water in the heating water tank to the energy storage water tank, and storing the excess heat; When the temperature of the heat transfer medium in the solar heating device is higher than the set temperature H for a set period of time, all the heat transfer medium is recycled into the heat transfer medium box; When solar energy heating is insufficient and the water temperature in the heating water tank is lower than the set temperature C, the control device controls the driving pump 1 to work in reverse, so that the heat conductor in the heat exchange pipeline 1 circulates in reverse, and transfers the hot water in the energy storage water tank to the heating water tank, and uses the heat of the water in the energy storage water tank for heating or domestic hot water use.

[0010] ②Air energy assisted mode: When the water temperature in the energy storage water tank is lower than the set temperature D, the control device starts the air energy heating device, and the compressor drives the heat transfer agent in the heat exchange pipeline 2 to circulate, obtain heat from the air, and heat the water in the heating water tank to the set temperature E before stopping; The air energy heating device automatically adjusts the output power according to the outdoor temperature, and starts the high-frequency mode when the outdoor temperature is lower than the set temperature F.

[0011] Compared with the prior art, the beneficial effects of the present invention are: The present invention can comprehensively utilize two renewable energy sources, solar energy and air energy, and realize energy storage and regulation through the energy storage system, thereby avoiding energy waste and improving the comprehensive efficiency of energy utilization. Compared with the traditional single-energy heating method, it can greatly reduce energy consumption and operating costs.

[0012] The spiral heat conductor pipeline in the solar vacuum heating tube can effectively improve the heating efficiency of the heat conductor and increase the solar heat absorption.

[0013] The control system can automatically switch between multiple heating modes according to different environmental conditions and user needs, and optimize the operation of each system to ensure that the required heat can be stably provided under various working conditions, unaffected by weather changes and fluctuations in energy supply, thereby improving the reliability and comfort of the heating system.

[0014] Solar energy and air energy are both clean energy. They do not produce pollutants during use, are environmentally friendly, meet the requirements of sustainable development, help reduce greenhouse gas emissions, and alleviate energy crises and environmental pollution problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view structural diagram of the support frame and its mounting components of the present invention; Figure 3 It is a schematic diagram of the top view of the support frame and its mounting components of the present invention; Figure 4 It is a schematic diagram of heat flow of the present invention; Figure 5 It is a schematic diagram of the heat conductor pipeline in the vacuum heating tube of the present invention.

[0016] Numbers shown in the accompanying drawings: 1. Heating water tank; 2. Heat transfer medium box; 20. Heat transfer medium addition port; 21. Heat exchange pipeline one; 3. Air energy heating device; 30. Heat exchange pipeline two; 4. Support frame; 5. Spiral tube; 6. Solar heating device; 7. Control device; 60. Vacuum heating tube; 8. Solenoid control valve; 9. Reflux pipe; 10. Energy storage water tank; 100. Heat exchange pipeline three; 11. Drive pump one; 12. Compressor; 13. Drive pump two. DETAILED DESCRIPTION

[0017] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0018] Combined with Figure 1-Figure 5 A solar energy storage and air energy control system auxiliary heating device, comprising a heating water tank 1, a heat conducting medium box body 2, an air energy heating device 3, a support frame 4, a solar energy heating device 6, an energy storage water tank 10, and a control device 7. The heating water tank 1, the heat conducting medium box body 2, the air energy heating device 3, and the solar energy heating device 6 are fixedly installed on the support frame 4 respectively. A heat exchange pipeline 21 is provided between the heating water tank 1 and the solar heating device 6. The heat exchange pipeline 21 is also connected to the heat conducting medium box body 2. A heat conductive agent circulates in the heat exchange pipeline 21. A heat exchange pipeline 2 30 is provided between the heating water tank 1 and the air energy heating device 3. A heat exchange pipeline 3 100 is connected between the heating water tank 1 and the energy storage water tank 10. The control device 7 is electrically connected to the air energy heating device 3 and the solar energy heating device 6. A domestic water heat exchange pipeline is also provided in the heating water tank 1. The control device 7 is a control device based on a single-chip microprocessor. The control device 7 is provided with a display screen and a number of control buttons for human-computer interaction control. The control device 7 is also electrically connected to the valve body, drive pump, temperature sensor and other components of each component. The heating water tank 1 and the solar heating device 6 are both provided with corresponding temperature sensors, and there is also a temperature sensor for monitoring the ambient temperature, which is electrically connected to the control device 7; the top of the solar heating device 6 is also provided with a return pipe 9, and the return pipe 9 is provided with an electromagnetic control valve 8 for controlling the reflux of the heat transfer agent.

[0019] The heat exchange pipeline 21 is connected between the heating water tank 1 and the solar heating device 6. The solar heating device 6 has a vacuum heating tube 60, and the vacuum heating tube 60 is connected to the heat exchange pipeline 21. The heating water tank 1 is provided with a spiral tube 5, and the heat exchange pipeline 21 is connected to the spiral tube 5. The heat transfer medium pipeline in the vacuum heating tube 60 is spiral; the spiral heat transfer medium pipeline in the vacuum heating tube 60 can effectively improve the heating efficiency of the thermal conductor.

[0020] A driving pump group is provided on one side of the heating water tank 1, and the driving pump group is electrically connected to the control device 7. The driving pump group includes a driving pump 11, a compressor 12, and a driving pump 2 13. The driving pump 11 controls the flow of the heat conductor in the heat exchange pipeline 1 21, the compressor 12 controls the flow of the heat conductor in the heat exchange pipeline 2 30, and the driving pump 2 13 controls the flow of the heat conductor in the heat exchange pipeline 3 100; each driving pump is also provided with a corresponding electrically controlled valve.

[0021] The heat transfer medium box 2 is provided with a heat transfer medium adding port 20, and a pressure balance valve is provided on the heat transfer medium box 2. The heat transfer medium box 2 is used to provide additional heat transfer agent to the heat exchange pipeline and recover part of the heat transfer agent. The pipeline connecting the heat transfer medium box 2 and the heat exchange pipeline is provided with a corresponding driving pump for replenishing and recovering the heat transfer agent. The heat transfer agent can be oil, which can be heated to a high temperature and can exchange heat with water efficiently.

[0022] Control method: ①Solar energy priority mode: When the temperature of the heat transfer agent in the solar heating device 6 is higher than the set temperature A, the control device 7 controls the driving pump 11 to work, so that the heat transfer agent in the heat exchange pipeline 21 circulates and transfers heat from the solar heating device 6 to the heating water tank 1. When the temperature of the heat transfer agent in the solar heating device 6 is higher than the set temperature upper limit B, the control device controls the driving pump 11 to stop working to avoid excessive water temperature and the generation of more scale; A is set to 80°C; When the temperature of the water in the heating water tank 1 is ≥55°C, the control device 7 controls the driving pump 2 13 to work, and the driving pump 2 13 causes the heat transfer agent in the heat exchange pipeline 3 100 to circulate, and transfer the heat of the water in the heating water tank 1 to the energy storage water tank 10, and store the excess heat; When the temperature of the heat transfer medium in the solar heating device 6 is higher than the set temperature H for a set time G, the heat transfer agent is completely recycled into the heat transfer medium box 2, and the heat transfer medium in the solar heating device 6 is emptied to prevent the heat transfer medium from being carbonized due to excessive temperature. When solar energy heating is insufficient and the water temperature in the heating water tank 1 is lower than the set temperature C, the control device 7 controls the driving pump 11 to work in reverse, so that the heat conductor in the heat exchange pipeline 21 circulates in reverse, and the hot water in the energy storage water tank 10 is transferred to the heating water tank 1, and the heat of the water in the energy storage water tank 10 is used for heating or to meet the use of domestic hot water; the set temperature C is 35°C.

[0023] ②Air energy assisted mode: When the water temperature in the energy storage water tank 10 is lower than the set temperature D, the control device 7 controls the air energy heating device 3 to start working, and the compressor 12 drives the heat transfer agent in the heat exchange pipeline 2 30 to circulate, obtain heat from the air, and heat the water in the heating water tank 1 to the set temperature E before stopping; the set temperature D is 20°C, and the set temperature E is 50°C; The air energy heating device 3 automatically adjusts the output power according to the outdoor temperature. When the outdoor temperature is lower than the set temperature F, the high frequency mode is started, the high power operation is performed, and the rapid heating mode is started; the set F is 10°C.

[0024] Thermal management in energy storage tank 10: When the temperature of the heating water tank 1 is higher than that of the energy storage water tank 10, the control system 7 can control the heat transfer to the energy storage water tank 10; When the temperature of the energy storage water tank is ≥55℃, stop transferring to avoid overheating.

[0025] For example, in the summer, the solar heating device retains five sets of heat transfer media for normal operation to ensure sufficient water temperature for bathing. The remaining parts are pumped into the medium box and stopped to avoid over-high temperature and reduce the life of the heat transfer medium.

[0026] Hierarchical energy storage strategy: The heating water tank and the energy storage tank control the transfer of hot water through temperature thresholds to improve the stability of heating supply.

[0027] The heat transfer medium box 2 is arranged above the air energy heating device 3, the heating water tank 1 is arranged on one side of the air energy heating device 3, and the heating water tank 1 is connected to the energy storage water tank 10 through a heat exchange pipeline.

[0028] The air energy heating device 3 is a relatively mature existing technology, and its principle is not repeated here. The air energy heating device 3 can also be replaced by light wave tube heating, induction heating and the like.

[0029] There is a spiral coil of tap water inside the heating water tank. When tap water flows into the coil, the outer wall of the coil exchanges heat with the hot water in the heating water tank 1, and the heated water meets the demand for hot water for bathing and other daily life.

[0030] Example: Take a 120㎡ house in North China as an example: 1. Equipment configuration: The solar heating device 6 has 20 vacuum heating tubes and a heat transfer medium box capacity of 50L; The air energy heating device has a rated power of 5kW and can adapt to low temperature environments of -15℃; The energy storage water tank has a capacity of 500L and the insulation layer is 60mm thick.

[0031] 2. Operation effect: The average daily solar energy contribution rate is 70%, and the air energy power consumption is only about 50% of that of traditional equipment; The indoor temperature is stable at 20℃±2℃ in winter.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solar energy storage and air energy control system auxiliary heating device, comprising a heating water tank (1), a heat transfer medium box (2), an air energy heating device (3), a support frame (4), a solar energy heating device (6), an energy storage water tank (10), and a control device (7), characterized in that: A heating water tank (1), a heat transfer medium box (2), an air energy heating device (3), and a solar energy heating device (6) are fixedly mounted on the support frame (4), respectively; a heat exchange pipeline (21) is provided between the heating water tank (1) and the solar energy heating device (6); the heat exchange pipeline (21) is also connected to the heat transfer medium box (2); a heat transfer agent circulates in the heat exchange pipeline (21); a heat exchange pipeline (30) is provided between the heating water tank (1) and the air energy heating device (3); a heat exchange pipeline (100) is connected between the heating water tank (1) and the energy storage water tank (10); the control device (7) is electrically connected to the air energy heating device (3) and the solar energy heating device (6); and a domestic water heat exchange pipeline is also provided in the heating water tank (1).

2. A solar energy storage and air energy control system auxiliary heating device according to claim 1, characterized in that: The heat exchange pipeline one (21) is connected between the heating water tank (1) and the solar heating device (6); the solar heating device (6) has a vacuum heating pipe (60), the vacuum heating pipe (60) is connected to the heat exchange pipeline one (21); the heating water tank (1) is provided with a spiral pipe (5), the heat exchange pipeline one (21) is connected to the spiral pipe (5), and the heat transfer medium pipeline in the vacuum heating pipe (60) is spiral.

3. The solar energy storage and air energy control system auxiliary heating device according to claim 1 is characterized in that: A driving pump group is provided on one side of the heating water tank (1), and the driving pump group is electrically connected to the control device (7). The driving pump group includes a driving pump 1 (11), a compressor (12), and a driving pump 2 (13). The driving pump 1 (11) controls the flow of the heat conductor in the heat exchange pipeline 1 (21), the compressor (12) controls the flow of the heat conductor in the heat exchange pipeline 2 (30), and the driving pump 2 (13) controls the flow of the heat conductor in the heat exchange pipeline 3 (100).

4. The solar energy storage and air energy control system auxiliary heating device according to claim 1 is characterized in that: The heat conducting medium box (2) is provided with a heat conducting medium adding port (20), and the heat conducting medium box (2) is provided with a pressure balancing valve.

5. A control method for a solar energy storage and air energy control system auxiliary heating device according to claims 1-4, characterized in that: ①Solar energy priority mode: When the temperature of the heat transfer agent in the solar heating device (6) is higher than a set temperature A, the control device (7) controls the driving pump (11) to operate, so that the heat transfer agent in the heat exchange pipeline (21) circulates and transfers heat from the solar heating device (6) to the heating water tank (1); when the temperature of the heat transfer agent in the solar heating device (6) is higher than a set temperature upper limit B, the control device controls the driving pump (11) to stop operating; When the temperature of the water in the heating water tank (1) is ≥55°C, the control device (7) controls the driving pump 2 (13) to operate, and the driving pump 2 (13) causes the heat transfer agent in the heat exchange pipeline 3 (100) to circulate, thereby transferring the heat of the water in the heating water tank (1) to the energy storage water tank (10) to store the excess heat; When the temperature of the heat-conducting medium in the solar heating device (6) is higher than the set temperature H for a set time G, the heat-conducting medium is completely recovered into the heat-conducting medium box (2); When solar energy is insufficient to provide heat and the water temperature in the heating water tank (1) is lower than the set temperature C, the control device (7) controls the driving pump 1 (11) to work in reverse, causing the heat transfer agent in the heat exchange pipeline 1 (21) to circulate in reverse, transferring the hot water in the energy storage water tank (10) to the heating water tank (1), and utilizing the heat of the water in the energy storage water tank 10 for heating or domestic hot water use. ②Air energy assisted mode: When the water temperature in the energy storage water tank (10) is lower than the set temperature D, the control device (7) controls the air energy heating device (3) to start working, and the compressor (12) drives the heat transfer agent in the second heat exchange pipeline (30) to circulate and obtain heat from the air, and then stops after heating the water in the heating water tank (1) to the set temperature E; The air energy heating device (3) automatically adjusts the output power according to the outdoor temperature, and starts the high frequency mode when the outdoor temperature is lower than the set temperature F.

Images