A solar energy supplementing heat type air source heat pump heating system in winter

Abstract

The utility model belongs to the heating technical field, disclose a kind of solar energy heat supplement formula air source heat pump heating system in winter. Including air source heat pump, solar energy collector, plate heat exchanger, heating circulating pump;The outlet of heating circulating pump is connected with the two network import of plate heat exchanger, and the two network export of plate heat exchanger is connected with electric three-way valve by pipeline and temperature sensor A is set on pipeline, and the other two export of electric three-way valve are connected with the import of air source heat pump respectively, heating water pipeline;The import of the primary side of plate heat exchanger is connected with heat supplement circulating pump export, heat supplement circulating pump import, heat collection water tank in proper order, and the export of the primary side of plate heat exchanger is connected with the top of heat collection water tank;The other end of heat collection water tank is connected with heat collection circulating pump import, heat collection circulating pump export, the import of solar energy collector in proper order, and temperature sensor B is equipped in heat collection water tank. Realize air source heat pump heating system to reduce operating cost, and the win-win effect of recycling excess solar energy heat.

Description

Technical Field

[0001] This utility model belongs to the field of heating technology, and relates to a winter solar-assisted air source heat pump heating system. Background Technology

[0002] Existing solar water heating systems, when hot water demand is low in winter, will dissipate excess heat into the atmosphere through circulation, which not only wastes solar energy but also consumes the power of the circulating water pump. In contrast, air source heat pump heating systems have relatively low energy efficiency and high operating costs in winter. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology, and in order to reduce the winter operating costs of air source heat pumps and recover and utilize excess solar energy, a winter solar-supplemented air source heat pump heating system is provided to achieve a win-win effect of reducing operating costs and recovering excess solar energy.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a winter solar-assisted air source heat pump heating system, including an air source heat pump, a solar collector, a plate heat exchanger, and a heating circulation pump; the inlet of the heating circulation pump is connected to the outlet of the existing heating building through a pipe, the outlet of the heating circulation pump is connected to the inlet of the secondary network of the plate heat exchanger, the outlet of the secondary network of the plate heat exchanger is connected to an electric three-way valve through a pipe and a temperature sensor A is installed on the pipe, the other two outlets of the electric three-way valve are respectively connected to the inlet of the air source heat pump and the heating water inlet pipe; the heating water inlet pipe is respectively connected to the outlet of the air source heat pump and the inlet of the existing heating building; the primary side inlet of the plate heat exchanger is sequentially connected to the outlet of the supplementary heating circulation pump, the inlet of the supplementary heating circulation pump, and the hot water collection tank, the primary side outlet of the plate heat exchanger is connected to the top of the hot water collection tank; the other end of the hot water collection tank is sequentially connected to the inlet of the heat collection circulation pump, the outlet of the heat collection circulation pump, and the inlet of the solar collector, the outlet of the solar collector is connected to the hot water collection tank; a temperature sensor B is installed inside the hot water collection tank.

[0005] The outlet of the secondary network of the plate heat exchanger is connected to the electric three-way valve via a secondary network water supply pipe of the plate heat exchanger.

[0006] The outlet of the heating circulation pump is connected to the inlet of the secondary network of the plate heat exchanger through the return water pipe of the secondary network of the plate heat exchanger.

[0007] The inlet of the heating circulation pump is connected to the outlet of the existing heating building through a heating return water pipe.

[0008] The primary outlet of the plate heat exchanger is connected to the top of the hot water collection tank via the plate heat exchanger primary network return water pipe.

[0009] The heating water inlet pipe is connected to the outlet of the air source heat pump through the air source heat pump outlet pipe.

[0010] Furthermore, temperature sensor A is linked to an electric three-way valve.

[0011] Furthermore, temperature sensor A is linked to the air source heat pump.

[0012] Furthermore, the temperature sensor B is linked to the heat recovery circulation pump.

[0013] The system is also equipped with a PLC control system. The heating circulation pump, electric three-way valve, heat replenishment circulation pump, heat collection circulation pump, temperature sensor A, and temperature sensor B are all connected to the PLC control system. There is no restriction on any specific model; the system only needs to perform its working functions.

[0014] The advantages of this utility model compared with the prior art are:

[0015] 1. This utility model maximizes the utilization rate of solar energy by storing excess heat energy in a hot water storage tank, balancing the energy supply fluctuations caused by day-night or weather changes, and realizing the tiered utilization of heat. Solar energy provides basic heat, and air source heat pumps supplement high-grade heat energy, thus achieving tiered and efficient utilization of energy.

[0016] 2. This utility model couples solar energy for supplemental heating, adds a plate heat exchanger to raise the temperature of the heating return water, improves energy utilization efficiency, reduces dependence on traditional electricity, lowers operating costs, saves operating expenses of air source heat pumps, and increases the COP energy efficiency of air source heat pumps.

[0017] 3. This utility model adds an electric three-way valve, which, together with the temperature sensor T1 of the secondary side water supply pipe of the plate heat exchanger, accurately controls the direction of water flow, ensuring the water inlet temperature of the heating building while reducing energy waste and meeting the building's usage requirements.

[0018] 4. The present invention provides a winter solar-powered supplementary air source heat pump heating system, which realizes the recovery and utilization of excess solar heat from the winter domestic hot water system, thereby reducing energy waste.

[0019] 5. The hot water tank of this utility model is equipped with a temperature sensor T2, which is linked with the heat replenishment circulation pump to ensure that the temperature of the hot water tank T2 is higher than that of the temperature sensor T1, thereby avoiding reverse heat exchange in the heating system, increasing the operating power of the air source heat pump, and ensuring the stability and reliability of the system. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of a winter solar-powered air-source heat pump heating system according to this utility model.

[0022] In the diagram: 1. Air source heat pump, 2. Heating circulation pump, 3. Plate heat exchanger, 4. Heat replenishment circulation pump, 5. Hot water tank, 6. Heat collection circulation pump, 7. Solar collector, 8. Electric three-way valve, 9. PLC control cabinet, 10. Heated building, 11. Heating return water pipe, 12. Plate heat exchanger secondary network return water pipe, 13. Plate heat exchanger secondary network supply water pipe, 14. Air source heat pump inlet water pipe, 15. Air source heat pump outlet water pipe, 16. Heating inlet water pipe, 17. Heat replenishment inlet water pipe, 18. Plate heat exchanger primary network inlet water pipe, 19. Plate heat exchanger primary network return water pipe, 20. Hot water tank outlet water pipe, 21. Solar collector inlet water pipe, 22. Solar collector outlet water pipe. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

[0024] The system is also equipped with a PLC control system. The heating circulation pump, electric three-way valve, heat replenishment circulation pump, heat collection circulation pump, temperature sensor A, and temperature sensor B are all connected to the PLC control system. There is no restriction on any specific model; the system only needs to perform its working functions.

[0025] Example 1

[0026] A type of air-source heat pump heating system with winter solar-assisted heating, such as Figure 1 As shown, the system includes an air source heat pump 1, a solar collector 7, a plate heat exchanger 3, and a heating circulation pump 2. The inlet of the heating circulation pump 2 is connected to the outlet of the existing heating building 10 via a pipe. The outlet of the heating circulation pump 2 is connected to the inlet of the secondary network of the plate heat exchanger 3. The outlet of the secondary network of the plate heat exchanger 3 is connected to an electric three-way valve 8 via a pipe, and a temperature sensor A is installed on the pipe. The other two outlets of the electric three-way valve 8 are connected to the inlet of the air source heat pump 1 and the heating water inlet pipe 16, respectively. The heating water inlet pipe 16 is divided into... The outlet of the air source heat pump 1 and the inlet of the existing heating building 10 are connected separately. The primary side inlet of the plate heat exchanger 3 is connected in sequence to the outlet of the supplementary heat circulation pump 4, the inlet of the supplementary heat circulation pump 4, and the hot water collection tank 5. The primary side outlet of the plate heat exchanger 3 is connected to the top of the hot water collection tank 5. The other end of the hot water collection tank 5 is connected in sequence to the inlet of the heat collection circulation pump 6, the outlet of the heat collection circulation pump 6, and the inlet of the solar collector 7. The outlet of the solar collector 7 is connected to the hot water collection tank 5. A temperature sensor B is installed inside the hot water collection tank 5.

[0027] The outlet of the secondary network of the plate heat exchanger 3 is connected to the electric three-way valve 8 via the secondary network water supply pipe 13 of the plate heat exchanger.

[0028] The outlet of the heating circulation pump 2 is connected to the inlet of the secondary network of the plate heat exchanger 3 through the return water pipe 12 of the secondary network of the plate heat exchanger.

[0029] The inlet of the heating circulation pump 2 is connected to the outlet of the existing heating building 10 through the heating return water pipe 11.

[0030] The primary outlet of the plate heat exchanger 3 is connected to the top of the hot water collection tank 5 via the plate heat exchanger primary network return water pipe 19.

[0031] The heating water inlet pipe 16 is connected to the outlet of the air source heat pump 1 through the air source heat pump outlet pipe 15.

[0032] Temperature sensor A is linked to electric three-way valve 8.

[0033] Temperature sensor A is linked to air source heat pump 1.

[0034] The temperature sensor B is linked to the heat recovery circulation pump 4.

[0035] In actual operation, the heating return water pipe 11 is connected to the secondary network return water pipe 12 of the plate heat exchanger via the heating circulation pump 2, and enters the plate heat exchanger 3 for heat exchange. At this time, the temperature sensor AT1 detects the temperature of the secondary network supply water pipe 13 of the plate heat exchanger and is linked with the electric three-way valve 8. When the set operating temperature is reached, the outlet of the electric three-way valve 8 enters the heating building 10 through the heating inlet water pipe 16 to provide heating for the building. If the set temperature is not reached, the outlet of the electric three-way valve 8 is connected to the air source heat pump 1 through the air source heat pump inlet water pipe 14 to continue heating. After the set temperature is reached, the air source heat pump outlet water pipe 15 is connected to the heating inlet water pipe 16 to enter the heating building 10 to provide heating for the building. This saves the operating cost of the air source heat pump and increases the COP energy efficiency of the air source heat pump.

[0036] The supplementary heating circulation pump 4 draws excess hot water from the hot water collection tank 5 through the supplementary heating inlet pipe 17. This hot water then enters the plate heat exchanger 3 via the primary network supply pipe 18 as a heat source to exchange heat with the heating return water. The heated water then returns to the hot water collection tank 5 through the primary network return pipe 19, thus recovering and utilizing excess solar heat in winter and reducing energy waste. At this time, the temperature sensor BT2 is linked to the supplementary heating circulation pump 4. When the temperature of the temperature sensor BT2 falls below the set value, the supplementary heating circulation pump 4 stops working, ensuring system stability and reliability, preventing reverse heat exchange in the heating system, and avoiding increased operating power of the air source heat pump.

[0037] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A winter solar-assisted air-source heat pump heating system, characterized in that, The system includes an air source heat pump (1), a solar collector (7), a plate heat exchanger (3), and a heating circulation pump (2). The inlet of the heating circulation pump (2) is connected to the outlet of the existing heating building (10) via a pipe. The outlet of the heating circulation pump (2) is connected to the inlet of the secondary network of the plate heat exchanger (3). The outlet of the secondary network of the plate heat exchanger (3) is connected to an electric three-way valve (8) via a pipe, and a temperature sensor A is installed on the pipe. The other two outlets of the electric three-way valve (8) are respectively connected to the inlet of the air source heat pump (1) and the heating water inlet pipe (16). The heating water inlet pipe (16) is respectively connected to the inlet of the air source heat pump (1) and the heating water inlet pipe (16). The outlet of the air source heat pump (1) and the inlet of the existing heating building (10) are connected in sequence; the primary side inlet of the plate heat exchanger (3) is connected to the outlet of the supplementary heat circulation pump (4), the inlet of the supplementary heat circulation pump (4), and the hot water collection tank (5); the primary side outlet of the plate heat exchanger (3) is connected to the top of the hot water collection tank (5); the other end of the hot water collection tank (5) is connected in sequence to the inlet of the heat collection circulation pump (6), the outlet of the heat collection circulation pump (6), and the inlet of the solar collector (7); the outlet of the solar collector (7) is connected to the hot water collection tank (5); a temperature sensor B is installed inside the hot water collection tank (5).

2. The winter solar-assisted air source heat pump heating system as described in claim 1, characterized in that, The outlet of the secondary network of the plate heat exchanger (3) is connected to the electric three-way valve (8) through the secondary network water supply pipe (13) of the plate heat exchanger.

3. The winter solar-assisted air source heat pump heating system as described in claim 1, characterized in that, The outlet of the heating circulation pump (2) is connected to the inlet of the secondary network of the plate heat exchanger (3) through the return water pipe (12) of the secondary network of the plate heat exchanger.

4. The winter solar-assisted air source heat pump heating system as described in claim 1, characterized in that, The inlet of the heating circulation pump (2) is connected to the outlet of the existing heating building (10) through the heating return water pipe (11).

5. A winter solar-assisted air source heat pump heating system as described in claim 1, characterized in that, The primary outlet of the plate heat exchanger (3) is connected to the top of the hot water collection tank (5) via the plate heat exchanger primary network return water pipe (19).

6. A winter solar-assisted air source heat pump heating system as described in claim 1, characterized in that, The heating water inlet pipe (16) is connected to the outlet of the air source heat pump (1) through the air source heat pump outlet pipe (15).

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