Solar energy heating, refrigeration and hot water combined supply device

Abstract

The application discloses a solar heating refrigeration hot water combined supply device, which comprises a layered heat storage water tank, a solar heat collecting array, an electromagnetic heating pipe, an absorption type lithium bromide refrigerating unit, a fan coil, a heat collecting array water supply pipeline, a heat collecting pipeline, an electromagnetic heating circulation pipeline, a hot water supply pipeline, a bromine refrigerating machine heat driven circulation pipeline, a refrigeration water supply and return pipeline and a heating water supply and return pipeline. The solar heat collecting array obtains a large amount of heat and transmits the heat to the layered heat storage water tank to store heat in layers, so that when the device is in a freeze prevention circulation in winter, water medium is guided into a low temperature layer of the layered heat storage water tank, the temperature of a high temperature layer of the layered heat storage water tank is not affected, the layered effect of the layered heat storage water tank can be ensured in the whole device whether in heat collecting circulation or in freeze prevention circulation, and the heat releasing efficiency of the layered heat storage water tank is greatly improved. When the solar energy is insufficient in a cloudy and rainy day, the electromagnetic heating pipe is automatically heated, and thus the solar combined supply device can provide winter heating, summer refrigeration and four seasons hot water for a building.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, and in particular to a solar-powered heating, cooling and hot water combined supply device. Background Technology

[0002] Large-scale combined solar power (CSP) systems are a key project for the future promotion of solar thermal utilization. CSP systems are already included in planning, and for large buildings with high energy consumption in their buildings, lobbies, pipes, and other facilities, the significant energy-saving and emission-reduction benefits of CSP systems are unmatched by any other system. A CSP system consists of a solar collector array composed of collector modules, achieving efficient heat collection and providing a continuous source of solar heat to the hot water storage tank, forming the heating center of the CSP unit. It provides direct heating in winter and drives lithium bromide chillers to provide cooling for the building in summer, while also meeting the hot water demand throughout the year. In winter, when temperatures are low, an anti-freeze cycle needs to be activated to prevent ice formation and blockage in the pipes. However, the existing anti-freeze cycle pumps water from the low-temperature zone of the tiered hot water storage tank into the solar collector array, mixing the cold and hot water before sending it to the high-temperature zone of the tiered hot water storage tank. This mixing of the cold and hot water with the hot water in the high-temperature zone lowers the temperature of the high-temperature zone, significantly weakening the heating capacity of the hot water storage tank. Summary of the Invention

[0003] This invention provides a solar-powered heating, cooling, and hot water combined supply device to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A solar-powered heating, cooling and hot water supply device includes: a stratified hot water storage tank, a solar collector array, an electromagnetic heating tube, an absorption lithium bromide chiller unit, a fan coil unit, a collector array water supply pipe, a collector pipe, an electromagnetic heating circulation pipe, a hot water supply pipe, a bromide chiller thermal drive circulation pipe, a cooling water supply and return pipe, and a heating water supply and return pipe.

[0006] The stratified hot water storage tank transports the water medium in the low-temperature layer to the solar collector array through the water supply pipe of the collector array, and the solar collector array transports the heated water medium to the high-temperature layer of the stratified hot water storage tank through the collector pipe.

[0007] Electromagnetic heating elements can assist in heating the water medium in a stratified hot water storage tank through electromagnetic heating circulation pipes.

[0008] The tiered hot water storage tank delivers hot water through hot water supply pipes;

[0009] The stratified hot water storage tank supplies heat to the absorption lithium bromide chiller unit through a heat-driven circulation pipeline driven by a bromine chiller. The absorption lithium bromide chiller unit supplies cooling to the fan coil unit through a cooling supply and return water pipeline. The stratified hot water storage tank supplies heat to the fan coil unit through a heating supply and return water pipeline.

[0010] The solar collector pipe is equipped with an antifreeze circulation pipe, and a system antifreeze temperature sensor is installed at the inlet of the solar collector array. When the system antifreeze temperature sensor detects that the water temperature in the solar collector array supply pipe is lower than the set threshold, the solar collector pipe is switched so that the outlet water medium of the solar collector array is introduced into the low-temperature layer of the stratified hot water storage tank through the antifreeze circulation pipe.

[0011] Preferably, the heat collection pipe connects the outlet of the solar collector array to the high-temperature layer manifold in the upper high-temperature layer of the stratified hot water storage tank. A three-way control valve is installed on the heat collection pipe. The antifreeze circulation pipe connects the three-way control valve to the antifreeze circulation manifold in the lower low-temperature layer of the stratified hot water storage tank. The three-way control valve is used to control the on / off state of the heat collection pipe and the connection / disconnection between the antifreeze circulation pipe and the heat collection pipe. When the monitoring value of the system's antifreeze temperature sensor is less than the set threshold, the three-way control valve connects the antifreeze circulation pipe and the heat collection pipe. The outlet water medium of the solar collector array is introduced into the low-temperature layer of the stratified hot water storage tank through the heat collection pipe, the three-way control valve, the antifreeze circulation pipe, and the antifreeze circulation manifold.

[0012] Preferably, the water supply pipe of the solar collector array connects the low-temperature layer manifold in the low-temperature layer of the lower layer of the stratified hot water storage tank to the inlet of the solar collector array; the low-temperature layer manifold is located at one-fifth of the height inside the stratified hot water storage tank, the anti-freeze circulation manifold is located at two-fifths of the height inside the stratified hot water storage tank, and the high-temperature layer manifold is located at 55% of the height inside the stratified hot water storage tank.

[0013] Preferably, the heat collection pipe is equipped with an exhaust component capable of automatically venting air. The exhaust component includes: a water vapor separation container, an exhaust connecting pipe, and an exhaust float valve. The water vapor separation container is provided with an exhaust port. The exhaust float valve is located inside the water vapor separation container. The exhaust connecting pipe connects the exhaust float valve and the heat collection pipe. The exhaust float valve controls the opening and closing of the exhaust connecting pipe.

[0014] Preferably, the heat collection pipe includes: a horizontal section, a bend section, and a retaining section. The retaining section is higher than the horizontal section, and the retaining section and the horizontal section are connected through the bend section. The height of the retaining section is equal to one-third of the height of the water vapor separation container, and the end of the exhaust connecting pipe away from the exhaust float valve is connected to the retaining section.

[0015] Preferably, the horizontal section and the water vapor separation container are connected through a leak detection level control component; the leak detection level control component includes: a venting sensor ball valve, a venting sensor, and a leak detection level control float valve. The leak detection level control float valve is located inside the water vapor separation container. The venting sensor ball valve and the venting sensor are connected to the horizontal section and the leak detection level control float valve. The leak detection level control float valve controls the on / off state of the venting sensor.

[0016] Preferably, a solar collector array temperature sensor is installed at the outlet of the solar collector array, and a high-temperature layer temperature sensor is installed on the high-temperature layer of the stratified hot water storage tank.

[0017] Preferably, a water-cooled pipeline is provided between the antifreeze circulation pipeline and the water supply pipeline of the heat collector array, and a water cooling system circulation pump is provided on the water-cooled pipeline. A water-cooled plate is also provided between the water supply pipeline of the heat collector array and the water cooling system circulation pump.

[0018] Preferably, the thermally driven circulation pipeline of the bromine chiller includes a thermally driven circulation water supply pipeline and a thermally driven circulation water return pipeline. The thermally driven circulation water supply pipeline transports the water medium in the high-temperature layer of the stratified hot water storage tank to the absorption lithium bromide chiller unit, and the thermally driven circulation water return pipeline transports the water medium back to the low-temperature layer of the stratified hot water storage tank.

[0019] The cooling water supply and return pipeline includes a cooling water supply pipeline and a cooling water return pipeline. The cooling water supply pipeline transports the water medium cooled by the absorption lithium bromide chiller to the fan coil unit, and the cooling water return pipeline transports the water medium back to the absorption lithium bromide chiller.

[0020] The heating supply and return water pipeline includes a heating supply water pipeline and a heating return water pipeline. The heating supply water pipeline transports the water medium in the high-temperature layer of the stratified hot water storage tank to the fan coil unit, and the heating return water pipeline transports the water medium back to the low-temperature layer of the stratified hot water storage tank.

[0021] Preferably, the solar thermal collector array is oriented due south and tilted vertically at a latitude plus 10-15 degrees.

[0022] Beneficial effects:

[0023] This application discloses a solar-powered heating, cooling, and hot water combined supply device that achieves stratified heat storage by transferring a large amount of heat obtained from a solar collector array to a stratified hot water storage tank. During the winter anti-freeze cycle, water is introduced into the low-temperature layer of the stratified hot water storage tank to ensure that the temperature of the high-temperature layer remains unaffected. This ensures effective system anti-freeze while maintaining the stratified effect of the hot water storage tank. Consequently, the entire device ensures the stratified effect of the hot water storage tank during both the heat collection and anti-freeze cycles, greatly improving the heat release efficiency of the stratified hot water storage tank. When solar energy is insufficient on cloudy or rainy days, the electromagnetic heating tube automatically heats up, thus ensuring that the solar combined supply device provides winter heating, summer cooling, and hot water year-round for the building. Attached Figure Description

[0024] 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a solar-powered heating, cooling and hot water combined supply device disclosed in this invention;

[0026] Figure 2 This is a schematic diagram showing the connection of a layered hot water storage tank, a solar collector array, collector pipes, antifreeze circulation pipes, and array water supply pipes in a solar heating, cooling, and hot water combined supply device disclosed in this invention.

[0027] Figure 3 This is a schematic diagram of the exhaust component of a solar-powered heating, cooling and hot water combined supply device disclosed in this invention.

[0028] 1. Layered hot water storage tank; 2. High-temperature layer manifold; 3. Three-way control valve; 4. Anti-freeze circulation manifold; 5. Water-cooled plate; 6. Water cooling system circulation pump; 7. Low-temperature layer manifold; 8. Solar collector system circulation pump; 9. Solar collector array; 10. System anti-freeze temperature sensor; 11. Solar collector array temperature sensor; 12. Electromagnetic heating tube; 13. Heat collector pipe; 14. Anti-freeze circulation pipe; 15. Low-temperature layer temperature sensor of hot water storage tank; 16. High-temperature layer temperature sensor of hot water storage tank; 17. Water supply pipe of solar collector array; 181. Air vent float valve; 182. Leak detection level control float valve; 183. Water vapor separator; 18 4. Flow sensor; 185. Flow sensor ball valve; 186. Exhaust ball valve; 187. Exhaust port; 188. Bend section; 189. Horizontal section; 1810. Holding section; 1811. Exhaust connecting pipe; 19. Water-cooled pipeline; 20. Absorption type lithium bromide chiller unit; 21. Fan coil unit; 22. Electromagnetic heating circulation pipeline; 231. Hot water supply pipeline; 232. Cold water supply pipeline; 233. Mixing valve; 241. Bromine chiller heat-driven circulation water supply pipeline; 242. Bromine chiller heat-driven circulation return water pipeline; 251. Cooling water supply pipeline; 252. Cooling return water pipeline; 261. Heating water supply pipeline; 262. Heating return water pipeline. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0030] A solar-powered heating, cooling, and hot water combined supply system, such as Figure 1 and Figure 2 As shown, it includes: a layered hot water storage tank 1, a solar collector array 9, an electromagnetic heating tube 12, an absorption lithium bromide chiller unit 20, a fan coil unit 21, a collector array water supply pipe 17, a collector pipe 13, an electromagnetic heating circulation pipe 22, a hot water supply pipe, a bromide chiller thermal drive circulation pipe, a cooling water supply and return pipe, and a heating water supply and return pipe.

[0031] The layered hot water storage tank 1 delivers the water medium in the low-temperature layer to the solar collector array 9 through the water supply pipe 17 of the collector array. The solar collector array 9 then delivers the heated water medium to the high-temperature layer of the layered hot water storage tank 1 through the collector pipe 13.

[0032] The electromagnetic heating tube 12 can provide auxiliary heating to the water medium in the stratified hot water storage tank 1 through the electromagnetic heating circulation pipe 22;

[0033] The tiered hot water storage tank 1 supplies hot water for all four seasons via hot water supply pipes;

[0034] In summer, the stratified hot water storage tank 1 supplies heat to the absorption chiller 20 through the hot-drive circulation pipe of the bromine chiller. The absorption lithium bromide chiller 20 supplies cooling to the fan coil unit 21 through the cooling supply and return water pipe. In winter, the stratified hot water storage tank 1 supplies heat to the fan coil unit 21 through the heating supply and return water pipe.

[0035] The heat collection pipe 13 is equipped with an antifreeze circulation pipe 14, and the solar collector array 9 is equipped with a system antifreeze temperature sensor 10 at the inlet position. When the system antifreeze temperature sensor 10 detects that the water temperature of the heat collection array water supply pipe 17 is lower than the set threshold, the heat collection pipe 13 switches to allow the outlet water medium of the solar collector array 9 to be introduced into the low-temperature layer of the stratified hot water storage tank 1 through the antifreeze circulation pipe 14.

[0036] By transferring a large amount of heat obtained from the solar collector array 9 to the stratified hot water storage tank 1, stratified heat storage is achieved. During the winter anti-freeze cycle, water is introduced into the low-temperature layer of the stratified hot water storage tank 1 to ensure that the temperature of the high-temperature layer of the stratified hot water storage tank 1 is not affected. This ensures effective system anti-freeze while maintaining the stratified effect of the stratified hot water storage tank 1. As a result, the entire device can ensure the stratified effect of the stratified hot water storage tank 1 in both the heat collection cycle and the anti-freeze cycle, which greatly improves the heat release efficiency of the stratified hot water storage tank 1. When the solar energy is insufficient on cloudy or rainy days, the electromagnetic heating tube 12 automatically heats up, thus ensuring that the solar combined heat and power device provides the building with winter heating, summer cooling and hot water all year round.

[0037] Preferably, the heat collection pipe 13 connects the outlet of the solar collector array 9 and the high-temperature layer manifold 2 in the high-temperature layer of the upper layer of the stratified hot water storage tank 1. The heat collection pipe 13 is equipped with a three-way control valve 3. The antifreeze circulation pipe 14 connects the three-way control valve 3 and the antifreeze circulation manifold 4 in the low-temperature layer of the lower layer of the stratified hot water storage tank 1. The three-way control valve 3 is used to control the opening and closing of the heat collection pipe 13 and the connection and closing of the antifreeze circulation pipe 14 with the heat collection pipe 13. When the monitoring value of the system antifreeze temperature sensor 10 is less than the set threshold (that is, the water temperature of the water supply pipe 17 of the solar collector array 9 is low, which is selected as 2°C in this embodiment), the three-way control valve 3 connects the antifreeze circulation pipe 14 with the heat collection pipe 13. The outlet water medium of the solar collector array 9 is introduced into the low-temperature layer of the stratified hot water storage tank 1 through the heat collection pipe 13, the three-way control valve 3, the antifreeze circulation pipe 14, and the antifreeze circulation manifold 4. This application achieves the switching of water medium from the heat collection pipe 13 to the antifreeze circulation pipe 14 by setting a three-way control valve 3. During the antifreeze circulation, the water medium can be introduced into the low-temperature layer of the stratified hot water storage tank 1 to ensure that the temperature of the high-temperature layer area of ​​the stratified hot water storage tank 1 is not affected. Under the premise of ensuring the stratification effect of the stratified hot water storage tank 1, effective system antifreeze is achieved.

[0038] Preferably, the water supply pipe 17 of the solar collector array connects the low-temperature layer manifold 7 in the low-temperature layer of the lower layer of the stratified hot water storage tank 1 to the inlet of the solar collector array 9; the low-temperature layer manifold 7 is located at one-fifth of the height inside the stratified hot water storage tank 1, the anti-freeze circulation manifold 4 is located at two-fifths of the height inside the stratified hot water storage tank 1, and the high-temperature layer manifold 2 is located at 55% of the height inside the stratified hot water storage tank 1.

[0039] Specifically, the three-way control valve 3 is an automatic reversing electric three-way valve, the specifications of which must match the circulation flow rate of the solar collector array 9. The three-way control valve 3 ensures that the connection between the antifreeze circulation pipe 14 and the collector pipe 13 is cut off during the heat collection circulation, so that the hot water in the solar collector array 9 is sent to the high-temperature layer of the stratified hot water storage tank 1 through the collector pipe 13; the three-way control valve 3 switches during the antifreeze circulation, so that the collector pipe 13 is cut off and the collector pipe 13 is connected to the antifreeze circulation pipe 14, so that the water in the solar collector array 9 enters the antifreeze circulation pipe 14, and then is introduced into the low-temperature layer of the stratified hot water storage tank 1 through the antifreeze circulation manifold 4.

[0040] Specifically, the solar collector array 9 adopts water-filled pressurized circulating glass vacuum tube collector modules. Its area or number of modules should be appropriate to the building-integrated solar energy system to ensure the amount of solar energy collected, so as to meet the national standard: NB / T 11036-2202 Technical Specification for Solar Combined Power System Engineering for solar energy guarantee rate.

[0041] Specifically, a solar collector system circulation pump 8 is installed on the water supply pipe 17 of the solar collector array. The selection and parameters of the solar collector system circulation pump 8 must meet the requirements of the combined heat and power unit for the circulation flow and head of the solar collector array 9, so that the water medium is forced to flow and circulate.

[0042] Preferably, the solar collector pipe 13 is equipped with an exhaust component capable of automatic venting. During the high-temperature heat collection process, the large solar collector array of the combined heat and power system is characterized by high water temperature and large gas production. If a large amount of gas cannot be vented quickly, the combined heat and power system will malfunction. This is because traditional exhaust valves are difficult to completely vent large amounts of gas instantly, causing gas blockage, especially in intermittent circulation systems. Each time the circulation begins from a static state, if a large amount of gas cannot be vented quickly, the circulation system will malfunction. This application addresses this by installing an exhaust component on the solar collector pipe 13, enabling a large amount of gas to be vented during the heat collection circulation process and returning the entrained liquid to the system.

[0043] The exhaust components include: a water vapor separation container 183, an exhaust connecting pipe 1811, and an exhaust float valve 181. The water vapor separation container 183 is provided with an exhaust port 187. The exhaust float valve 181 is located inside the water vapor separation container 183. The exhaust connecting pipe 1811 connects the exhaust float valve 181 with the heat collection pipe 13. The exhaust float valve 181 controls the opening and closing of the exhaust connecting pipe 1811.

[0044] Specifically, an exhaust ball valve 186 is provided in the middle of the exhaust connecting pipe 1811, and the exhaust ball valve 186 is used to control the opening and closing of the exhaust connecting pipe 1811.

[0045] During the heat collection cycle, the water vapor mixture in the heat collection pipe 13 enters the water vapor separation container 183 through the exhaust connecting pipe 1811, exhaust ball valve 186, and exhaust float valve 181, and the gas in it is discharged through the exhaust port 187. As the cycle continues, the water vapor mixture is continuously injected into the water vapor separation container 183, and the liquid level in the water vapor separation container 183 rises, causing the exhaust float valve 181 to close, and the venting ends. At this time, the gas in the heat collection pipe 13 is completely discharged, and even if a small amount of gas remains, it is not enough to create air resistance, ensuring the smooth flow of the heat collection cycle.

[0046] Preferably, the heat collection pipe 13 includes: a horizontal section 189, a bend section 188, and a holding section 1810. The holding section 1810 is higher than the horizontal section 189, and the holding section 1810 and the horizontal section 189 are connected through the bend section 188. The height of the holding section 1810 is equal to one-third of the height of the water vapor separation container 183. The end of the exhaust connecting pipe 1811 away from the exhaust float valve 181 is connected to the holding section 1810 to ensure that the liquid level in the water vapor separation container 183 is equal to one-third of the container height.

[0047] Specifically, the heat collection pipe 13 is located at the highest point of the entire device, and the connection position of the exhaust connection pipe 1811 is also located at the high point of the heat collection pipe 13, ensuring that the water vapor mixture in the heat collection pipe 13 enters the exhaust connection pipe 1811 and then enters the water vapor separation container 183.

[0048] Preferably, the horizontal section 189 and the water vapor separation container 183 are connected through a leak detection level control component. This component includes a venting sensor ball valve 185, a venting sensor 184, and a leak detection level control float valve 182. The leak detection level control float valve 182 is located inside the water vapor separation container 183. The venting sensor ball valve 185 and the venting sensor 184 connect the horizontal section 189 and the leak detection level control float valve 182, and the leak detection level control float valve 182 controls the opening and closing of the venting sensor 184 and the water vapor separation container 183. The venting sensor 184 is an anhydrous sensor. During the heat collection cycle, under the pressure of the pipeline circulation, water will flow upwards through the venting sensor ball valve 185, the venting sensor 184, and the leak detection level control float valve 182 into the water vapor separation container 183. When the liquid level in the water vapor separator 183 rises to one-third of the container's height, the liquid level causes the leak detection level control float valve 182 to close, preventing water medium from continuing to enter the water vapor separator 183, thereby controlling the liquid level at one-third of the height, providing and limiting the height of the leak detection liquid level for leak detection, and ensuring that the gas in the heat collector pipe 13 is discharged from the exhaust connection pipe 1811.

[0049] When the device stops circulating, the water medium in section 1810 continues to flow into the stratified hot water storage tank 1; the water medium in horizontal section 189 does not flow back due to the check valve installed at the outlet of the circulating pump 8 of the solar collector system; thus, the leak detection liquid level in the water vapor separation container 183 remains unchanged at one-third of its height. However, if there is a partial leak in the device or a malfunction in the check valve at the outlet of the circulating pump 8 of the solar collector system, the liquid level in the water vapor separation container 183 will drop. When the liquid level drops below the leak sensor 184, the leak sensor 184 will generate a no-water alarm signal; this signal will be transmitted to the intelligent control module, which will then automatically close the main control valve, lock the circulation system in the closed state, and realize online leak detection. At the same time, an alarm can also be issued, and the leak or check valve malfunction will be displayed on the human-machine interface of the intelligent control module, prompting maintenance personnel to arrive at the site for repair in a timely manner.

[0050] Preferably, a solar collector array temperature sensor 11 is provided at the outlet of the solar collector array 9 to monitor the temperature of the water outlet of the solar collector array 9; a high-temperature layer temperature sensor 16 is provided on the high-temperature layer of the stratified hot water storage tank 1 to monitor the temperature of the water on the high-temperature layer.

[0051] Preferably, a water-cooled pipe 19 is provided between the antifreeze circulation pipe 14 and the water supply pipe 17 of the heat collector array. The two ends of the water-cooled pipe 19 are connected to the antifreeze circulation pipe 14 and the water supply pipe 17 of the heat collector array using tee connectors. A water cooling system circulation pump 6 is installed on the water-cooled pipe 19, and a water-cooled plate 5 is also provided between the water supply pipe 17 of the heat collector array and the water cooling system circulation pump 6. The water in the antifreeze circulation pipe 14 can flow through the water-cooled plate 5 through the water cooling system circulation pump 6. This ensures that the temperature of the low-temperature layer of the stratified hot water storage tank 1 is always at its lowest value, and also allows the water medium in the low-temperature layer to provide cooling circulating water for the water-cooled plate 5. Because the cooling circulating water for the water-cooled plate 5 is guaranteed to be the lowest temperature water medium, the good heat dissipation effect of the control system of the electromagnetic heating tube 12 can be effectively ensured.

[0052] Specifically, the selection and parameters of the water cooling system circulating pump 6 must meet the heat dissipation requirements of the combined heat and power unit for the control system of the auxiliary energy electromagnetic heating tube 12.

[0053] Specifically, the low-temperature layer of the stratified hot water storage tank 1 is equipped with a low-temperature layer temperature sensor 15 to monitor the temperature of the water in the low-temperature layer.

[0054] Specifically, the system antifreeze temperature sensor 10, the solar collector array temperature sensor 11, the high-temperature layer temperature sensor 16 of the hot water storage tank, and the low-temperature layer temperature sensor 15 of the hot water storage tank all adopt digital temperature sensors, with a temperature range of -40°~100° and an accuracy of ≤0.5°.

[0055] Preferably, the bromine chiller thermal drive circulation pipeline includes a bromine chiller thermal drive circulation water supply pipeline 241 and a bromine chiller thermal drive circulation return water pipeline 242. The bromine chiller thermal drive circulation water supply pipeline 241 transports the water medium in the high-temperature layer of the stratified hot water storage tank 1 to the absorption lithium bromide chiller unit 20 for refrigeration by the absorption lithium bromide chiller unit 20. The bromine chiller thermal drive circulation return water pipeline 242 transports the water medium after operation back to the low-temperature layer of the stratified hot water storage tank 1.

[0056] The cooling water supply and return pipeline includes a cooling water supply pipeline 251 and a cooling water return pipeline 252. The cooling water supply pipeline 251 transports the water medium cooled by the absorption lithium bromide chiller 20 to the fan coil unit 21 for cooling. The cooling water return pipeline 252 transports the water medium after operation back to the absorption lithium bromide chiller 20.

[0057] The heating supply and return water pipeline includes a heating supply water pipeline 261 and a heating return water pipeline 262. The heating supply water pipeline 261 transports the water medium in the high-temperature layer of the stratified hot water storage tank 1 to the fan coil unit 21 for heating. The heating return water pipeline 262 transports the water medium after operation back to the low-temperature layer of the stratified hot water storage tank 1.

[0058] Specifically, the absorption lithium bromide chiller unit 20 adopts a heat absorption lithium bromide chiller unit. One end of the bromide chiller heat-driven circulating water supply pipeline 241 is connected to the high-temperature layer of the stratified hot water storage tank 1, and the other end is connected to the heat medium inlet of the heat absorption lithium bromide chiller unit. One end of the bromide chiller heat-driven circulating return water pipeline 242 is connected to the heat medium outlet of the heat absorption lithium bromide chiller unit, and the other end is connected to the low-temperature layer of the stratified hot water storage tank 1. A circulation pump is installed on the bromide chiller heat-driven circulating return water pipeline 242 for circulation.

[0059] One end of the cooling water supply pipeline 251 is connected to the refrigerant outlet of the heat absorption lithium bromide chiller unit, and the other end is connected to the inlet of the fan coil unit 21. One end of the cooling water return pipeline 252 is connected to the outlet of the fan coil unit 21, and the other end is connected to the refrigerant inlet of the heat absorption lithium bromide chiller unit. A circulation pump is installed on the cooling water return pipeline 252 for circulation.

[0060] One end of the heating water supply pipeline 261 is connected to the high-temperature layer of the stratified hot water storage tank 1, and the other end is connected to the inlet of the fan coil unit 21. One end of the heating return water pipeline 262 is connected to the outlet of the fan coil unit 21, and the other end is connected to the low-temperature layer of the stratified hot water storage tank 1. A circulation pump is installed on the heating water supply pipeline 261 for circulation.

[0061] The cooling water supply line 251 and the heating water supply line 261 merge into one line and are connected to the inlet of the fan coil unit 21. One end of the heating return water line 262 merges into one line with the cooling return water line 252, and the other end merges into one line with the bromine chiller heat drive circulation return water line 242.

[0062] Specifically, the hot water supply pipeline includes a hot water supply pipeline 231, a cold water supply pipeline 232, and a mixing valve 233. One end of the hot water supply pipeline 231 is connected to the high-temperature layer of the stratified hot water storage tank 1, and the other end is connected to the mixing valve 233. One end of the cold water supply pipeline 232 is connected to the low-temperature layer of the stratified hot water storage tank 1, and the other end is connected to the mixing valve 233. The hot and cold water in the hot water supply pipeline 231 and the cold water supply pipeline 232 are mixed to the required temperature and then supplied to the faucet through the mixing valve 233.

[0063] Specifically, the layered hot water storage tank 1 is connected to the water source tap through a pipeline, and the cold water supply pipeline 232 merges with the pipeline to form a single pipeline.

[0064] Specifically, the control systems of the solar collector system circulation pump 8, three-way control valve 3, system antifreeze temperature sensor 10, exhaust ball valve 186, venting sensor ball valve 185, venting sensor 184, solar collector array temperature sensor 11, hot water storage tank high-temperature layer temperature sensor 16, water cooling system circulation pump 6, hot water storage tank low-temperature layer temperature sensor 15, and electromagnetic heating tube 12 are all connected to the intelligent control module, which realizes the control of the entire device.

[0065] Specifically, the water-cooled plate 5 is a cube with a flat aluminum alloy surface containing heat dissipation channels. The power device surface of the electromagnetic heating tube 12 control system is coated with a heat-conducting medium and then fastened to the flat surface of the flat aluminum alloy cube with screws to dissipate heat, providing water cooling for the electromagnetic heating control system. The size and volume of the water-cooled plate depend on the amount of heat generated by the power device of the electromagnetic heating control system.

[0066] Preferably, the solar collector array 9 faces due south and has a vertical tilt angle of latitude plus 10-15 degrees. At 40° North latitude, the tilt angle can be set to 53°. It is understood that a rotating structure can be set to control the deflection of the solar collector array 9 to always face the sun, i.e., automatic tracking.

[0067] The working principle of the device in this application is as follows:

[0068] During the heating and cooling seasons, the solar collector array 9 collects heat under sunlight, causing the temperature sensor 11 to detect an increase in value T1. When T1 exceeds the temperature sensor 16 of the high-temperature layer of the hot water storage tank (T4 = 8-10°C), the intelligent control module receives a signal and starts the heat collection system circulation pump 8. This pump injects water from the low-temperature layer of the stratified hot water storage tank 1 into the solar collector array 9 through the low-temperature layer manifold 7 and the heat collection array water supply pipe 17, pushing out the high-temperature water from the solar collector array 9. The high-temperature water then flows through the heat collection pipe 13, the three-way control valve 3, and the high-temperature layer manifold 2 into the high-temperature layer of the stratified hot water storage tank 1. When T1 = T4, the intelligent control module receives a signal and stops the heat collection system circulation pump 8, halting the heat collection cycle.

[0069] When the temperature detected by the system's antifreeze temperature sensor 10, T2, is ≤ 2℃, the device enters the antifreeze cycle state. After receiving the signal, the intelligent control module starts the solar collector system circulation pump 8 and controls the three-way control valve 3 to switch directions. The water medium from the outlet of the solar collector array 9 is injected into the low-temperature layer of the stratified hot water storage tank 1 through the solar collector pipe 13, the three-way control valve 3, the antifreeze circulation pipe 14, and the antifreeze circulation manifold 4, preventing the water medium inside the device from freezing and the structure from being damaged by freezing due to excessively low temperatures in the pipeline system.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solar-powered heating, cooling, and hot water combined supply device, characterized in that, include: Layered hot water storage tank (1), solar collector array (9), electromagnetic heating tube (12), absorption lithium bromide chiller unit (20), fan coil unit (21), collector array water supply pipe (17), collector pipe (13), electromagnetic heating circulation pipe (22), hot water supply pipe, bromide chiller heat drive circulation pipe, cooling water supply and return pipe and heating water supply and return pipe; The layered hot water storage tank (1) transports the water medium in the low-temperature layer to the solar collector array (9) through the water supply pipe (17) of the collector array, and the solar collector array (9) transports the heated water medium to the high-temperature layer of the layered hot water storage tank (1) through the collector pipe (13). The electromagnetic heating tube (12) can provide auxiliary heating to the water medium in the stratified hot water storage tank (1) through the electromagnetic heating circulation pipe (22); The stratified hot water storage tank (1) delivers hot water through a hot water supply pipeline; The layered hot water storage tank (1) supplies heat to the absorption lithium bromide chiller (20) through the bromine chiller heat drive circulation pipeline. The absorption lithium bromide chiller (20) supplies cold to the fan coil unit (21) through the cooling supply and return water pipeline. The layered hot water storage tank (1) supplies heat to the fan coil unit (21) through the heating supply and return water pipeline. The heat collection pipe (13) is provided with an antifreeze circulation pipe (14), and the solar heat collection array (9) is provided with a system antifreeze temperature sensor (10). When the system antifreeze temperature sensor (10) detects that the water temperature of the heat collection array water supply pipe (17) is less than the set threshold, the heat collection pipe (13) switches to allow the outlet water medium of the solar heat collection array (9) to be introduced into the low-temperature layer of the layered hot water storage tank (1) through the antifreeze circulation pipe (14). The heat collection pipe (13) is equipped with an exhaust component capable of automatic exhaust. The exhaust component includes: a water vapor separation container (183), an exhaust connecting pipe (1811), and an exhaust float valve (181). The water vapor separation container (183) is provided with an exhaust port (187). The exhaust float valve (181) is located inside the water vapor separation container (183). The exhaust connecting pipe (1811) connects the exhaust float valve (181) and the heat collection pipe (13). The exhaust float valve (181) controls the opening and closing of the exhaust connecting pipe (1811). The heat collection pipe (13) includes: a horizontal section (189), a bend section (188), and a retaining section (1810). The retaining section (1810) is higher than the horizontal section (189), and the retaining section (1810) and the horizontal section (189) are connected through the bend section (188). The height of the retaining section (1810) is equal to one-third of the height of the water vapor separator (183). The end of the exhaust connecting pipe (1811) away from the exhaust float valve (181) is connected to the retaining section (1810). The horizontal section (189) and the water vapor separation container (183) are connected by a leak detection level control component; the leak detection level control component includes: a venting sensor ball valve (185), a venting sensor (184), and a leak detection level control float valve (182). The leak detection level control float valve (182) is located inside the water vapor separation container (183). The venting sensor ball valve (185) and the venting sensor (184) are connected to the horizontal section (189) and the leak detection level control float valve (182). The leak detection level control float valve (182) controls the on / off state of the venting sensor (184).

2. The solar-powered heating, cooling, and hot water combined supply device according to claim 1, characterized in that, The heat collection pipe (13) is connected to the outlet of the solar heat collection array (9) and the high-temperature layer manifold (2) in the high-temperature layer of the upper layer of the stratified hot water storage tank (1). The heat collection pipe (13) is equipped with a three-way control valve (3). The antifreeze circulation pipe (14) is connected to the three-way control valve (3) and the antifreeze circulation manifold (4) in the low-temperature layer of the lower layer of the stratified hot water storage tank (1). The three-way control valve (3) is used to control the opening and closing of the heat collection pipe (13) and the opening and closing of the antifreeze circulation pipe (14) and the heat collection pipe (13). When the monitoring value of the system antifreeze temperature sensor (10) is less than the set threshold, the three-way control valve (3) connects the antifreeze circulation pipe (14) and the heat collection pipe (13). The outlet water medium of the solar heat collection array (9) is introduced into the low-temperature layer of the stratified hot water storage tank (1) through the heat collection pipe (13), the three-way control valve (3), the antifreeze circulation pipe (14), and the antifreeze circulation manifold (4).

3. A solar-powered heating, cooling, and hot water combined supply device according to claim 2, characterized in that, The water supply pipe (17) of the heat collection array connects the low-temperature layer manifold (7) in the low-temperature layer of the lower layer of the layered hot water storage tank (1) and the inlet of the solar heat collection array (9); the low-temperature layer manifold (7) is located at one-fifth of the height inside the layered hot water storage tank (1), the antifreeze circulation manifold (4) is located at two-fifths of the height inside the layered hot water storage tank (1), and the high-temperature layer manifold (2) is located at 55% of the height inside the layered hot water storage tank (1).

4. A solar-powered heating, cooling, and hot water combined supply device according to claim 1, characterized in that, The solar collector array (9) is provided with a solar collector array temperature sensor (11) at its outlet position, and the hot water storage tank (1) is provided with a hot water storage tank high temperature layer temperature sensor (16) at its high temperature layer.

5. A solar-powered heating, cooling, and hot water combined supply device according to claim 1, characterized in that, A water-cooled pipe (19) is provided between the antifreeze circulation pipe (14) and the water supply pipe (17) of the heat collector array. A water cooling system circulation pump (6) is provided on the water-cooled pipe (19). A water-cooled plate (5) is also provided between the water supply pipe (17) of the heat collector array and the water cooling system circulation pump (6).

6. A solar-powered heating, cooling, and hot water combined supply device according to claim 1, characterized in that, The bromine chiller thermal drive circulation pipeline includes a bromine chiller thermal drive circulation water supply pipeline (241) and a bromine chiller thermal drive circulation return water pipeline (242). The bromine chiller thermal drive circulation water supply pipeline (241) transports the water medium in the high-temperature layer of the stratified hot water storage tank (1) to the absorption lithium bromide chiller unit (20), and the bromine chiller thermal drive circulation return water pipeline (242) transports the water medium back to the low-temperature layer of the stratified hot water storage tank (1). The cooling water supply and return pipeline includes a cooling water supply pipeline (251) and a cooling water return pipeline (252). The cooling water supply pipeline (251) transports the water medium cooled by the absorption lithium bromide chiller (20) to the fan coil unit (21), and the cooling water return pipeline (252) transports the water medium back to the absorption lithium bromide chiller (20). The heating supply and return water pipeline includes a heating supply water pipeline (261) and a heating return water pipeline (262). The heating supply water pipeline (261) transports the water medium in the high-temperature layer of the stratified hot water storage tank (1) to the fan coil unit (21), and the heating return water pipeline (262) transports the water medium back to the low-temperature layer of the stratified hot water storage tank (1).

7. A solar-powered heating, cooling, and hot water combined supply device according to claim 1, characterized in that, The solar thermal collector array (9) faces due south and has a vertical tilt angle of latitude plus 10-15 degrees.

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