Solar energy and air energy double-source coupled three-cycle heat supply system
By designing a three-cycle heating system that couples solar and air energy sources, the problems of insufficient sunlight in solar heating systems and performance degradation of air-source heat pumps in extremely cold environments are solved, achieving energy complementarity and efficient heating.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN YUNLU LOGISTICS INVESTMENT CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional solar heating systems are ineffective when sunlight is insufficient, air source heat pumps degrade in extremely cold environments, and single heating systems do not utilize energy in a diversified manner. Existing combined solar and air source heating systems have low cycle efficiency and unreasonable heat storage and utilization.
The design incorporates a three-cycle heating system that couples solar and air energy sources, including a solar collector cycle, an air energy heat pump cycle, and a hybrid cycle. It is combined with a high-efficiency composite phase change thermal storage unit to achieve the complementary advantages of solar and air energy. The heating path is switched under different weather conditions through the circulation guide section, taking advantage of the complementarity of solar and air energy.
It enables continuous heating under different weather conditions, improves energy efficiency and system stability, and enhances the reliability and heat utilization efficiency of the heating system.
Smart Images
Figure CN224151010U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating equipment technology, and in particular to a three-cycle heating system with dual-source coupling of solar energy and air energy. Background Technology
[0002] With the increasing global demand for clean energy, efficient, energy-saving, and environmentally friendly heating systems have become a hot topic in research and application. Traditional heating methods, such as coal-fired and oil-fired heating, not only cause serious environmental pollution, but also have low energy utilization and high costs. In the context of pursuing sustainable development, solar energy and air energy have received widespread attention as clean energy sources because of their inexhaustible and pollution-free characteristics.
[0003] Solar heating systems utilize solar collectors to convert solar energy into heat energy, providing users with hot water or heating. However, solar heating has significant limitations. On the one hand, its heating capacity depends on the intensity and duration of sunlight; in situations with insufficient sunlight, such as at night, on cloudy days, or in winter, the heating effect is greatly reduced, making it difficult to meet users' continuous and stable heating needs. On the other hand, the efficiency of solar collectors is greatly affected by ambient temperature; in low-temperature environments, the collection efficiency decreases, further limiting its application range. Air source heat pump heating systems, on the other hand, absorb heat from the air and transfer it to the object being heated by consuming a small amount of electricity, boasting a high energy efficiency ratio. However, in extremely cold environments, the heating performance of air source heat pumps will significantly decrease, even leading to problems such as frosting and shutdown. Moreover, a single air source heating system is not diversified enough in terms of energy utilization, failing to fully utilize other renewable energy sources and potentially resulting in energy waste.
[0004] To address the aforementioned issues, some attempts have been made to combine solar and air energy for heating in existing technologies. However, most of these systems have simple structures and fail to fully utilize the advantages of both energy sources, exhibiting drawbacks such as low cycle efficiency and inefficient heat storage and utilization. Based on this, a three-cycle heating system coupling solar and air energy was designed. This system integrates solar collector circulation, air energy heat pump circulation, and a hybrid circulation combining both, along with a high-efficiency composite phase change thermal storage unit. This achieves complementary advantages between solar and air energy, improves energy utilization efficiency, and enhances the stability and reliability of the heating system. Utility Model Content
[0005] The purpose of this invention is to provide a three-cycle heating system that couples solar energy and air energy, which can combine solar heat collection cycle, air energy heat pump cycle, and hybrid cycle of the two coupled with a high-efficiency composite phase change thermal storage unit to achieve complementary advantages of solar energy and air energy and improve energy utilization efficiency.
[0006] The technical implementation scheme of this utility model is as follows:
[0007] A three-cycle heating system with dual-source coupling of solar and air energy includes a solar heating unit, an air energy heating unit, and a circulation guide unit. One end of the solar heating unit is connected to an inlet water pipe through the circulation guide unit, and the other end is connected to a domestic water pipe through a first outlet water pipe. One end of the air energy heating unit is connected to the inlet water pipe through the circulation guide unit, and the other end is connected to a domestic water pipe through a second outlet water pipe. The solar heating unit is connected to the air energy heating unit through a first water passage pipe to form a water circulation structure.
[0008] Optionally, the solar heating unit includes a first fixing frame, a gold vacuum tube, a water filter, a first water guide pipe, a second water guide pipe, and a storage tank. The first fixing frame is a rectangular frame structure, and a number of gold vacuum tubes are arranged in a row on the upper part of the first fixing frame, and the gold vacuum tubes are connected to the water filter on the side. The water filter is connected to the storage tank through the first water guide pipe and the second water guide pipe.
[0009] Optionally, the storage tank is mounted on a support bracket at one end of the first fixed frame, and the outlet of the storage tank is connected to the first outlet pipe.
[0010] Optionally, the air source heating unit includes a second fixed frame, a heat pump body, a fixed plate, a compressor, a condenser, an evaporator, and an expansion valve. The heat pump body is mounted on the second fixed frame, and a fixed plate is mounted inside the heat pump body. The compressor, condenser, evaporator, and expansion valve are mounted on the fixed plate.
[0011] Optionally, the compressor is mounted on the fixed plate via a fixed base, and the compressor is connected to the condenser via a first guide pipe. The condenser is connected to the evaporator via a second guide pipe and an expansion valve. The evaporator is connected to the compressor via a third guide pipe to form a reflux structure. A three-way valve is installed on the fourth guide pipe connecting the evaporator and the expansion valve, and the three-way valve is connected to the storage tank via a first water pipe. A digitally controlled valve is installed on the first water pipe.
[0012] Optionally, the circulation guide section includes a third fixed frame, a water tank, a first guide pump, and a third water guide pipe. The water tank is mounted on the third fixed frame, and the first outlet of the water tank is connected to the heat pump body through the third water guide pipe. The first guide pump is mounted on the third water guide pipe.
[0013] Optionally, the second outlet of the water tank is connected to the solar heating unit through a fourth water guide pipe, and a second flow pump is installed on the fourth water guide pipe.
[0014] Optionally, a sealing cover is provided on the upper part of the heat pump body.
[0015] This utility model has the following advantages:
[0016] 1. This utility model is designed with a solar heating unit, an air-source heating unit, and a circulation guide unit. The water flow through the circulation guide unit and the solar heating unit can heat the cold water, thereby realizing the first stage of solar heating. The water flow through the circulation guide unit and the air-source heating unit can heat the cold water when the solar heating unit has a low heating efficiency on cloudy days, thus making up for the deficiency of solar heating efficiency on cloudy days.
[0017] 2. In this utility model, the solar heating unit is connected to the air source heating unit through the first water pipe. When the weather is sunny, the solar heating unit is highly efficient and there will be excess heat energy, which is introduced into the evaporator of the air source heating unit, thereby realizing the recycling of heat source. Moreover, this method can also improve the heating efficiency of heat pump.
[0018] 3. The entire structure of this utility model can switch according to weather changes to achieve continuous heating. Moreover, the design of connecting the solar heating unit and the air source heating unit can exchange excess heat energy and improve heating efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model.
[0020] Figure 2 This is a schematic diagram of the solar heating part of this utility model.
[0021] Figure 3 This is a schematic diagram of the structure of the heat pump body of this utility model.
[0022] Figure 4 This is a schematic diagram of the structure of the air-source heat pump heating element of this utility model.
[0023] The meanings of the reference numerals in the figure are as follows: 1-Solar heating unit, 101-First fixed frame, 102-Golden vacuum tube, 103-Water filter, 104-Bearing bracket, 105-Storage tank, 106-First water guide pipe, 107-Second water guide pipe, 2-Air source heating unit, 201-Second fixed frame, 203-Heat pump body, 204-Fixing plate, 205-Sealing cover, 206-Fixing base, 207-Compressor, 208-First guide pipe, 209-Condenser, 210-Second guide pipe, 211-Expansion valve, 212-Third guide pipe, 213-Evaporator, 214-Fourth guide pipe, 3-Circulation guide unit, 301-Third fixed frame, 302-Water tank, 303-First guide pump, 304-Third water guide pipe, 4-First water outlet pipe, 5-Second water outlet pipe. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.
[0025] like Figures 1-4 As shown, a three-cycle heating system with dual-source coupling of solar and air energy includes a solar heating unit 1, an air energy heating unit 2, and a circulation guide unit 3. One end of the solar heating unit 1 is connected to the inlet water pipe through the circulation guide unit 3, and the other end is connected to the domestic water pipe through the first outlet water pipe 4. One end of the air energy heating unit 2 is connected to the inlet water pipe through the circulation guide unit 3, and the other end of the air energy heating unit 2 is connected to the domestic water pipe through the second outlet water pipe 5. The solar heating unit 1 is connected to the air energy heating unit 2 through the first water passage pipe 7 to form a water circulation structure.
[0026] It should be noted that, in order to achieve continuous heating of cold water, a solar heating unit 1, an air-source heating unit 2, and a circulation guide unit 3 are designed. The external water source is connected to the solar heating unit 1 and the air-source heating unit 2 through the circulation guide unit 3, so as to achieve the purpose of heating both ends simultaneously. On sunny days, the path to the air-source heating unit 2 is closed, and cold water can continuously enter the solar heating unit 1 for heating. On cloudy days and at night, the solar energy efficiency is low, so the path to the air-source heating unit 2 is opened, and cold water enters the air-source heating unit 2 to achieve continuous heating, thus making up for the shortcomings of solar energy due to weather conditions and improving the heating efficiency.
[0027] It should be further explained that the solar heating unit 1 is connected to the air source heating unit 2 through the first water pipe 7. When the weather is sunny, overheating may occur during the process of solar heating of cold water. After the water temperature reaches a certain level, the overheated water is introduced into the evaporator 213 of the air source heating unit 2 through the first water pipe 7. In the solar heating unit 1, it is heated again through the purple gold vacuum tube 102, thereby improving the heating efficiency of the air source heating unit 2. This not only realizes the recycling of heat source, but also improves heating efficiency.
[0028] like Figures 1-4As shown, the solar heating unit 1 includes a first fixing frame 101, a purple-gold vacuum tube 102, a water conveyor 103, a first water guide pipe 106, a second water guide pipe 107, and a storage tank 105. The first fixing frame 101 has a rectangular frame structure, and several purple-gold vacuum tubes 102 are arranged in a row on the upper part of the first fixing frame 101. The purple-gold vacuum tubes 102 are connected to the water conveyor 103 on the side. The water conveyor 103 is connected to the storage tank 105 through the first water guide pipe 106 and the second water guide pipe 107. The storage tank 105 is set on a support bracket 104 at one end of the first fixing frame 101, and the water outlet of the storage tank 105 is connected to the first water outlet pipe 4.
[0029] It should be noted that several gold vacuum tubes 102 are arranged in a row on the upper part of the first fixed frame 101, which can heat cold water. Moreover, the gold vacuum tubes 102 are connected to the storage tank 105 through the water filter 103, the first water guide pipe 106 and the second water guide pipe 107, which can store the heated water and introduce it into the domestic water area through the first water outlet pipe 4 to achieve heating.
[0030] like Figures 1-3 As shown, the air source heating unit 2 includes a second mounting bracket 201, a heat pump body 203, a mounting plate 204, a compressor 207, a condenser 209, an evaporator 213, and an expansion valve 211. The heat pump body 203 is mounted on the second mounting bracket 201, and the mounting plate 204 is disposed inside the heat pump body 203. The compressor 207, condenser 209, evaporator 213, and expansion valve 211 are mounted on the mounting plate 204. The compressor 207 is mounted on the mounting plate 204 via a mounting base 206. The compressor 207 is connected to the condenser 209 via the first guide pipe 208, the condenser 209 is connected to the evaporator 213 via the second guide pipe 210 and the expansion valve 211, and the evaporator 213 is connected to the compressor 207 via the third guide pipe 212 to form a reflux structure; a three-way valve is provided on the fourth guide pipe 214 connecting the evaporator 213 and the expansion valve 211, and the three-way valve is connected to the storage tank 105 via the first water pipe 7; a digitally controlled valve is provided on the first water pipe 7.
[0031] It should be noted that the heat pump body 203 is mounted on the second fixed frame 201, and a fixed plate 204 is installed inside the heat pump body 203. The fixed plate 204 is equipped with a compressor 207, a condenser 209, an evaporator 213, and an expansion valve 211. The working process of the air source heating unit 2 is based on the reverse Carnot cycle principle. The heat is transported and enhanced through the coordinated operation of the four core components: the low-temperature and low-pressure gaseous refrigerant first enters the compressor 207, and after compression, it becomes a high-temperature and high-pressure gaseous state. It is then transported to the condenser 209 through the first guide pipe 208. In the condenser, the refrigerant exchanges heat with the circulating water in the storage tank 105, releasing heat to raise the water temperature. It then liquefies itself into a high-pressure liquid state and flows to the expansion valve 211 through the second guide pipe 210. After the high-pressure liquid refrigerant is throttled and depressurized by the expansion valve, it becomes a low-temperature and low-pressure mist liquid state. It enters the evaporator 213 to absorb heat from the ambient air, evaporates into a low-temperature and low-pressure gaseous state, and then returns to the compressor through the third guide pipe 212 to complete the closed-loop cycle.
[0032] When solar energy is abundant, the system introduces hot water from storage tank 105 into the front end of the evaporator through the three-way valve and CNC valve on the fourth guide pipe 214. The sensible heat of the hot water is used to improve the refrigerant evaporation efficiency, increasing the system COP by 18%. When the ambient temperature is below 0℃, the system automatically cuts off solar coupling and starts the compressor's vapor injection enthalpy enhancement function to ensure that the heating capacity decreases by less than 15% in environments below -25℃. This process is controlled by the electronic expansion valve and CNC valve control system to match the refrigerant flow rate with the amount of solar coupling, ultimately achieving a comprehensive and efficient heating effect throughout the year.
[0033] like Figures 1-4 As shown, the system includes a third fixed frame 301, a water tank 302, a first diversion pump 303, and a third water pipe 304. The water tank 302 is mounted on the third fixed frame 301, and its first outlet is connected to the heat pump body 203 via the third water pipe 304. The first diversion pump 303 is mounted on the third water pipe 304. The second outlet of the water tank 302 is connected to the solar heating unit 1 via a fourth water pipe, and a second diversion pump is mounted on the fourth water pipe. A sealing cover 205 is mounted on the upper part of the heat pump body 203.
[0034] It should be noted that the water tank 302 on the upper part of the third fixed frame 301 is used to store cold water introduced from the outside. It is connected to the solar heating unit 1 and the air-source heating unit 2 respectively, so as to realize the simultaneous heating of the two and heat the cold water.
[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A three-cycle heating system coupled with solar energy and air energy, comprising a solar energy heating part (1), an air energy heating part (2) and a circulation guide part (3), characterized in that, The solar heating part (1) is connected with the water inlet pipe through the circulation guide part (3) at one end and is connected with the water pipe for daily use through the first water outlet pipe (4) at the other end. The air energy heating part (2) is connected with the water inlet pipe through the circulation guide part (3) at one end, and is connected with the water pipe for daily use through the second water outlet pipe (5) at the other end. The solar heating part (1) is connected with the air energy heating part (2) through the first water passing pipe (7) to form a water flow circulation structure.
2. The three-cycle heating system of claim 1, wherein, The solar heating part (1) comprises a first fixing frame (101), a purple gold vacuum tube (102), a water passing device (103), a first water guide pipe (106), a second water guide pipe (107) and a storage tank (105), the first fixing frame (101) is a rectangular frame structure, and a plurality of purple gold vacuum tubes (102) are arranged in the upper part of the first fixing frame (101) in a row, and the purple gold vacuum tubes (102) are connected with the water passing device (103) on the side. The water passing device (103) is connected with the storage tank (105) through the first water guide pipe (106) and the second water guide pipe (107).
3. A three-cycle heating system with dual-source coupling of solar energy and air energy as described in claim 2, characterized in that, The storage tank (105) is arranged on a bearing support (104) at one end of the first fixing frame (101), and the water outlet of the storage tank (105) is connected with the first water outlet pipe (4).
4. The three cycle heating system of claim 1, wherein, The air energy heating part (2) comprises a second fixing frame (201), a heat pump body (203), a fixed plate (204), a compressor (207), a condenser (209), an evaporator (213) and an expansion valve (211), the heat pump body (203) is arranged on the second fixing frame (201), and the fixed plate (204) is arranged in the heat pump body (203), and the compressor (207), the condenser (209), the evaporator (213) and the expansion valve (211) are arranged on the fixed plate (204).
5. The triple cycle heating system of claim 4, wherein the system further comprises a solar energy collector and a solar energy storage tank. The compressor (207) is arranged on the fixed plate (204) through a fixed seat (206), the compressor (207) is connected with the condenser (209) through a first flow guide pipe (208), the condenser (209) is connected with the evaporator (213) through a second flow guide pipe (210) and the expansion valve (211), and the evaporator (213) is connected with the compressor (207) through a third flow guide pipe (212) to form a reflux structure. A three-way valve is arranged on a fourth flow guide pipe (214) connected with the evaporator (213) and the expansion valve (211), and the three-way valve is connected with the storage tank (105) through the first water passing pipe (7). A numerical control valve is arranged on the first water passing pipe (7).
6. The triple cycle heating system of claim 1, wherein, The circulation guide part (3) comprises a third fixing frame (301), a water tank (302), a first flow guide pump (303) and a third water guide pipe (304), the water tank (302) is arranged on the third fixing frame (301), a first water outlet of the water tank (302) is connected with the heat pump body (203) through the third water guide pipe (304), and the third water guide pipe (304) is provided with the first flow guide pump (303).
7. The triple cycle heating system of claim 6, wherein the system further comprises a solar energy collector and a solar energy storage tank. The second water outlet of the water tank (302) is connected with the solar heating part (1) through a fourth water guide pipe, and a second flow guide pump is arranged on the fourth water guide pipe.
8. The triple cycle heating system of claim 4, wherein the system further comprises a solar energy collector and a solar energy storage tank. The upper portion of the heat pump body (203) is provided with a sealing cover (205).