A dual heat source heat pump system

Abstract

This invention discloses a dual-heat-source heat pump system, which includes a first heat pump system, a second heat pump system, a hot water system connected to and exchanging heat with the first heat pump system, a photovoltaic cooling system connected to and exchanging heat with the first heat pump system, and an air conditioning system connected to and exchanging heat with the first and second heat pump systems. The photovoltaic cooling system includes a first water tank connected to a heat dissipation water pipe of a photovoltaic panel. The first water tank is connected to the photovoltaic cooling heat exchanger of the first heat pump system through a first heat exchange circulation loop. The first heat exchange circulation loop is equipped with a photovoltaic cooling circulating water pump for promoting the circulation of water in the first heat exchange circulation loop and the first water tank.

Description

Technical Field

[0001] This invention relates to the field of heat pumps, and more specifically, to a dual-heat-source heat pump system. Background Technology

[0002] my country is a major energy consumer, and the development and application of renewable, clean, and alternative energy sources continue. Solar photovoltaic (PV) energy, as a clean and green energy source, is favored for its environmental friendliness, sustainability, and abundance. However, PV panels generate heat during operation, and as temperature increases, their photoelectric conversion efficiency decreases significantly. Therefore, in existing technologies, aluminum tubes (filled with water) distributed under the PV panels serve to cool them. On the other hand, the water inside the tubes absorbs heat; due to the principle of thermal expansion and contraction, the hot water rises and flows into a water tank, while the cold water flows downwards, further cooling the PV panels and absorbing heat itself. This results in a waste of heat.

[0003] The heat generated by the photovoltaic panels is absorbed and carried away by water in the aluminum pipes below, thus cooling the panels and improving power generation efficiency. The temperature in the water tank also rises. However, under high ambient temperatures and strong sunlight, the photovoltaic panels generate a large amount of heat, while the water tank dissipates heat slowly. The water temperature in the tank may reach a high value after only a short period of operation. At this point, the cooling effect of the water circulation in the aluminum pipes is greatly reduced, making it difficult to absorb the heat generated by the photovoltaic panels, resulting in energy waste and insignificant cooling of the panels. Summary of the Invention

[0004] To address the aforementioned deficiencies in the prior art, this invention provides a dual-heat-source heat pump system.

[0005] The technical solution adopted by the present invention to solve its technical problem is: to construct a dual heat source heat pump system, which includes a first heat pump system, a second heat pump system, a hot water system connected to the first heat pump system and exchanging heat with it, a photovoltaic cooling system connected to the first heat pump system and exchanging heat with it, and an air conditioning system connected to the first heat pump system and the second heat pump system and exchanging heat with it.

[0006] The photovoltaic cooling system includes a first water tank connected to the heat dissipation water pipe of the photovoltaic panel. The first water tank is connected to the photovoltaic cooling heat exchanger of the first heat pump system through a first heat exchange circulation loop. The first heat exchange circulation loop is equipped with a photovoltaic cooling circulating water pump for promoting the circulation of water in the first heat exchange circulation loop and the first water tank.

[0007] In the dual-heat-source heat pump system of the present invention, the first heat pump system includes a first compressor, a heat pump hot water heat exchanger, a first four-way valve, an outdoor finned heat exchanger, a first condenser fan, a first one-way valve, a first refrigeration solenoid valve, an air conditioning hot and cold water heat exchanger, and a first gas-liquid separator. The first compressor, the heat pump hot water heat exchanger, the first four-way valve, the outdoor finned heat exchanger, the first one-way valve, the first refrigeration solenoid valve, the air conditioning hot and cold water heat exchanger, and the first gas-liquid separator are sequentially connected and interconnected through a first heat pump circulation loop.

[0008] In the dual heat source heat pump system of the present invention, the hot water system includes a hot water tank, which is connected to the heat pump hot water heat exchanger through a second heat exchange circulation loop. The second heat exchange circulation loop is provided with a hot water circulation pump for promoting the circulation of water in the hot water tank and the second heat exchange circulation loop.

[0009] In the dual heat source heat pump system of the present invention, the hot water tank is provided with a first temperature sensor for detecting the water temperature in the hot water tank and a first electric heater for heating the water in the hot water tank.

[0010] In the dual heat source heat pump system of the present invention, the first water tank and the heat dissipation water pipe of the photovoltaic panel are connected through a third heat exchange circulation loop, and the third heat exchange circulation loop is provided with a heat dissipation circulation water pump for promoting water circulation between the first water tank and the heat dissipation water pipe.

[0011] In the dual heat source heat pump system of the present invention, the first water tank is provided with a second temperature sensor for detecting the water temperature in the first water tank, a second electric heater for heating the water in the first water tank, and a cooling fan for dissipating heat from the first water tank.

[0012] In the dual heat source heat pump system of the present invention, the air conditioning system includes an air conditioning unit, which is connected to the air conditioning hot and cold water heat exchanger through a fourth heat exchange circulation loop. The fourth heat exchange circulation loop is provided with an air conditioning circulating water pump to promote the flow of the air conditioning unit and the medium in the fourth heat exchange circulation loop.

[0013] In the dual heat source heat pump system of the present invention, the fourth heat exchange circulation loop is further provided with a third temperature sensor for detecting the temperature of the medium in the fourth heat exchange circulation loop, and a third electric heater for heating the medium in the fourth heat exchange circulation loop.

[0014] In the dual-heat-source heat pump system of the present invention, the second heat pump system includes a second compressor, a second four-way valve, a second condenser fan, a second one-way valve, a second refrigeration solenoid valve, and a second gas-liquid separator. The first heat pump system and the second heat pump system share the air conditioning hot and cold water heat exchanger. The second compressor, the second four-way valve, the second one-way valve, the second refrigeration solenoid valve, the air conditioning hot and cold water heat exchanger, and the second gas-liquid separator are sequentially connected and interconnected through a fifth heat pump circulation loop.

[0015] In the dual-heat-source heat pump system of the present invention, the dual-heat-source heat pump system further includes a first outdoor condenser and a second outdoor condenser, both of which are disposed within the outdoor finned heat exchanger. The dual-heat-source heat pump system further includes a first condensing fan disposed around the first outdoor condenser to dissipate heat from the first outdoor condenser, and a second condensing fan disposed around the second outdoor condenser to dissipate heat from the second outdoor condenser.

[0016] The dual-heat-source heat pump system of this invention has the following beneficial effects: When implementing the dual-heat-source heat pump system of this invention, by connecting the heat dissipation water pipe of the photovoltaic panel to the first water tank, the heat generated by the photovoltaic panel is absorbed by the water and then transferred to the first water tank by the water flow. Then, the heat in the water tank is transferred to the photovoltaic cooling heat exchanger by the first heat exchange circulation loop and utilized by the first heat pump system to cool the water in the first water tank, thereby achieving the effect of cooling the photovoltaic panel and fully utilizing thermal energy resources. In this invention, the first heat pump system collects and removes heat from the surface of the photovoltaic panel, reducing the surface temperature of the photovoltaic panel. While improving the power generation efficiency of the photovoltaic panel, it recovers heat for heating water and air conditioning. Simultaneously, the first heat pump system and the second heat pump system work together to achieve air conditioning cooling and heating. This system not only realizes solar photovoltaic power generation but also meets the cooling needs of the photovoltaic panel and air source system throughout the year. At the same time, energy recovery is achieved through the dual-heat-source heat pump system and applied to hot water production, winter heating, and summer cooling needs, significantly reducing energy consumption while ensuring stable system operation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the dual-heat-source heat pump system of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] like Figure 1As shown, in the first embodiment of the dual heat source heat pump system of the present invention, the dual heat source heat pump system 10 includes a first heat pump system 11, a second heat pump system 12, a hot water system 13 connected to the first heat pump system 11 and exchanging heat with it, a photovoltaic cooling system 14 connected to the first heat pump system 11 and exchanging heat with it, and an air conditioning system 15 connected to the first heat pump system 11 and the second heat pump system 12 and exchanging heat with it.

[0021] The photovoltaic cooling system 14 includes a first water tank 16 connected to the heat dissipation water pipe of the photovoltaic panel. The first water tank 16 is connected to the photovoltaic cooling heat exchanger 33 of the first heat pump system 11 through a first heat exchange circulation loop 17. The first heat exchange circulation loop 17 is equipped with a photovoltaic cooling circulating water pump 18 for promoting the circulation of water in the first heat exchange circulation loop 17 and the first water tank 16.

[0022] When implementing the dual-heat-source heat pump system 10 of the present invention, the heat dissipation water pipe of the photovoltaic panel is connected to the first water tank 16. After the heat generated by the photovoltaic panel is absorbed by the water, it is transferred to the first water tank 16 by the water flow. Then, the heat in the water tank is transferred to the photovoltaic cooling heat exchanger 33 by the first heat exchange circulation loop 17 and utilized by the first heat pump system 11 to cool the water in the first water tank 16, thereby achieving the effect of cooling the photovoltaic panel and making full use of thermal energy resources. In the present invention, the first heat pump system 11 collects and removes the heat from the surface of the photovoltaic panel, reducing the surface temperature of the photovoltaic panel. While improving the power generation efficiency of the photovoltaic panel, it recovers heat for heating water and air conditioning. At the same time, the first heat pump system 11 and the second heat pump system 12 work together to achieve air conditioning cooling and heating. This system can not only realize solar photovoltaic power generation, but also meet the cooling needs of the photovoltaic panel and air source system throughout the year. At the same time, it realizes energy recovery through the dual-heat-source heat pump system and applies it to hot water production, winter heating and summer cooling needs, significantly reducing energy consumption while ensuring stable system operation.

[0023] Specifically, the first heat pump system 11 includes a first compressor 19, a heat pump hot water heat exchanger 20, a first four-way valve 21, an outdoor finned heat exchanger 22, a first condenser fan 23, a first one-way valve 24, a first refrigeration solenoid valve 25, an air conditioning hot and cold water heat exchanger 26, and a first gas-liquid separator 27. The first compressor 19, the heat pump hot water heat exchanger 20, the first four-way valve 21, the outdoor finned heat exchanger 22, the first condenser fan 23, the first one-way valve 24, the first refrigeration solenoid valve 25, the air conditioning hot and cold water heat exchanger 26, and the first gas-liquid separator 27 are sequentially connected and interconnected through a first heat pump circulation loop.

[0024] During the air conditioning cooling process, the first compressor 19 operates, the first four-way valve 21 is de-energized, and the refrigerant is compressed into a high-temperature and high-pressure gas in the first compressor 19. It flows into the heat pump hot water heat exchanger 20 to heat the hot water tank 28 (described in detail later), and then flows through the first four-way valve 21 into the outdoor finned heat exchanger 22 to be cooled by the first condenser fan 23. After that, it flows through the first one-way valve 24 and the first refrigeration solenoid valve 25 in sequence into the air conditioning cold and hot water heat exchanger 26 to supply cooling for the air conditioning system 15. Finally, it flows back to the first compressor 19 through the first four-way valve 21 and the first gas-liquid separator 27 to complete the refrigeration cycle.

[0025] Furthermore, the hot water system 13 includes a hot water tank 28, which is connected to the heat pump hot water heat exchanger 20 through a second heat exchange circulation loop 29. The second heat exchange circulation loop 29 is equipped with a hot water circulation pump 30 for promoting water circulation in the hot water tank 28 and the second heat exchange circulation loop 29.

[0026] The hot water tank 28 absorbs heat from the heat pump hot water exchanger 20 through the hot water circulation pump 30 to heat the water.

[0027] Furthermore, the hot water tank 28 is equipped with a first temperature sensor 31 for detecting the water temperature inside the hot water tank 28, and a first electric heater 32 for heating the water inside the hot water tank 28.

[0028] When the first temperature sensor 31 detects that the water temperature in the hot water tank 28 is lower than or equal to the preset temperature, the first electric heater 32 can be turned on to heat the water in the hot water tank 28.

[0029] Specifically, the first water tank 16 is connected to the heat dissipation water pipe of the photovoltaic panel through the third heat exchange circulation loop 34, and the third heat exchange circulation loop 34 is equipped with a heat dissipation circulation water pump 35 for promoting water circulation between the first water tank 16 and the heat dissipation water pipe.

[0030] Furthermore, the first water tank 16 is equipped with a second temperature sensor 36 for detecting the water temperature inside the first water tank 16, a second electric heater 37 for heating the water inside the first water tank 16, and a cooling fan for dissipating heat from the first water tank 16 is also provided above the first water tank 16.

[0031] When the cooling temperature sensor of the photovoltaic panel detects that the temperature has reached the set value, the cooling circulating water pump 35 starts, recovering the heat from the photovoltaic power generation system into the first water tank 16. When the second temperature sensor 36 in the first water tank 16 detects that the temperature has reached the set value, the photovoltaic cooling circulating water pump 18 starts, the photovoltaic cooling circulating solenoid valve starts, and the first cooling solenoid valve 25 closes with a delay, allowing refrigerant to flow into the photovoltaic cooling heat exchanger 33 to carry away the heat. When the second temperature sensor 36 detects that the water temperature in the first water tank 16 is higher than the preset temperature, it can also control the cooling fan to start, dissipating the remaining heat into the air.

[0032] Specifically, the air conditioning system 15 includes an air conditioning unit, which is connected to the air conditioning hot and cold water heat exchanger 26 through a fourth heat exchange circulation loop 38. The fourth heat exchange circulation loop 38 is equipped with an air conditioning circulating water pump 39 to promote the flow of the medium in the air conditioning unit and the fourth heat exchange circulation loop 38.

[0033] Furthermore, the fourth heat exchange circulation loop 38 is also provided with a third temperature sensor 40 for detecting the temperature of the medium inside the fourth heat exchange circulation loop 38, and a third electric heater 41 for heating the medium inside the fourth heat exchange circulation loop 38.

[0034] In the air conditioning system 15, the heat from the air conditioning hot and cold water heat exchanger 26 is transported to the air conditioning unit by the air conditioning circulating water pump 39. When the third temperature sensor 40 of the air conditioning system 15 detects that the return water temperature is lower than the set value, the third electric heater 41 automatically turns on to supplement the heat.

[0035] Specifically, the second heat pump system 12 includes a second compressor 42, a second four-way valve 43, a second condenser fan 44, a second one-way valve 45, a second refrigeration solenoid valve 46, and a second gas-liquid separator 47. The first heat pump system 11 and the second heat pump system 12 share the air conditioning hot and cold water heat exchanger 26. The second compressor 42, the second four-way valve 43, the second condenser fan 44, the second one-way valve 45, the second refrigeration solenoid valve 46, the air conditioning hot and cold water heat exchanger 26, and the second gas-liquid separator 47 are sequentially connected and interconnected through the fifth heat pump circulation loop.

[0036] Furthermore, the dual-heat-source heat pump system 10 also includes a first outdoor condenser and a second outdoor condenser 48, both of which are disposed within the outdoor finned heat exchanger 22. The dual-heat-source heat pump system 10 also includes a first condensing fan 23 disposed around the first outdoor condenser to dissipate heat from the first outdoor condenser, and a second condensing fan 44 disposed around the second outdoor condenser 48 to dissipate heat from the second outdoor condenser 48.

[0037] During the refrigeration process, the refrigerant is compressed into a high-temperature and high-pressure gas in the second compressor 42. It flows into the outdoor finned heat exchanger 22 through the second four-way valve 43 and is cooled by the second condenser fan 44. Then it flows into the air conditioning chilled-hot water heat exchanger 26 through the second one-way valve 45 and the second refrigeration solenoid valve 46 to exchange heat with the air conditioning system 15. Finally, it flows back to the second compressor 42 through the second four-way valve 43 and the second gas-liquid separator 47 to complete the refrigeration cycle.

[0038] It is understandable that the first heat exchange circulation loop 17, the second heat exchange circulation loop 29, the third heat exchange circulation loop 34, the fourth heat exchange circulation loop 38 and the fifth heat exchange circulation loop are all pipe loops, and the medium can circulate within the first heat exchange circulation loop 17, the second heat exchange circulation loop 29, the third heat exchange circulation loop 34, the fourth heat exchange circulation loop 38 and the fifth heat exchange circulation loop.

[0039] Furthermore, in this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A dual heat source heat pump system, characterized by, The double-heat-source heat pump system comprises a first heat pump system, a second heat pump system, a hot water system connected with and in heat exchange with the first heat pump system, a photovoltaic cooling system connected with and in heat exchange with the first heat pump system, and an air conditioning system connected with and in heat exchange with the first heat pump system and the second heat pump system. The photovoltaic cooling system comprises a first water tank in communication with a heat dissipation water pipe of a photovoltaic panel, the first water tank is in communication with a photovoltaic cooling heat exchanger of the first heat pump system through a first heat exchange circulation loop, and a photovoltaic cooling circulating water pump is arranged on the first heat exchange circulation loop to promote water circulation in the first heat exchange circulation loop and the first water tank. The first heat pump system comprises a first compressor, a heat pump hot water heat exchanger, a first four-way valve, an outdoor fin heat exchanger, a first condensing fan, a first one-way valve, a first refrigeration electromagnetic valve, an air conditioning cold and hot water heat exchanger, and a first gas-liquid separator, and the first compressor, the heat pump hot water heat exchanger, the first four-way valve, the outdoor fin heat exchanger, the first one-way valve, the first refrigeration electromagnetic valve, the air conditioning cold and hot water heat exchanger, and the first gas-liquid separator are sequentially connected and communicated through a first heat pump circulation loop.

2. The dual heat source heat pump system of claim 1, wherein, The hot water system comprises a hot water tank, the hot water tank is in communication with the heat pump hot water heat exchanger through a second heat exchange circulation loop, and a hot water circulating water pump is arranged on the second heat exchange circulation loop to promote water circulation in the hot water tank and the second heat exchange circulation loop.

3. The dual heat source heat pump system of claim 2, wherein, The hot water tank is provided with a first temperature sensor for detecting the water temperature in the hot water tank and a first electric heater for heating the water in the hot water tank.

4. The dual heat source heat pump system of claim 1, wherein, The first water tank is in communication with the heat dissipation water pipe of the photovoltaic panel through a third heat exchange circulation loop, and a heat dissipation circulating water pump is arranged on the third heat exchange circulation loop to promote water circulation between the first water tank and the heat dissipation water pipe.

5. The dual heat source heat pump system of claim 4, wherein, The first water tank is provided with a second temperature sensor for detecting the water temperature in the first water tank and a second electric heater for heating the water in the first water tank, and a heat dissipation fan is further arranged above the first water tank to dissipate heat from the first water tank.

6. The dual heat source heat pump system of claim 1, wherein, The air conditioning system comprises an air conditioning main machine, the air conditioning main machine is in communication with the air conditioning cold and hot water heat exchanger through a fourth heat exchange circulation loop, and an air conditioning circulating water pump is arranged on the fourth heat exchange circulation loop to promote the flow of medium in the air conditioning main machine and the fourth heat exchange circulation loop.

7. The dual heat source heat pump system of claim 6, wherein, The fourth heat exchange circulation loop is further provided with a third temperature sensor for detecting the temperature of the medium in the fourth heat exchange circulation loop and a third electric heater for heating the medium in the fourth heat exchange circulation loop.

8. The dual heat source heat pump system of claim 1, wherein, The second heat pump system comprises a second compressor, a second four-way valve, a second condensing fan, a second one-way valve, a second refrigeration electromagnetic valve, and a second gas-liquid separator, the first heat pump system and the second heat pump system share the air conditioning cold and hot water heat exchanger, and the second compressor, the second four-way valve, the second one-way valve, the second refrigeration electromagnetic valve, the air conditioning cold and hot water heat exchanger, and the second gas-liquid separator are sequentially connected and communicated through a fifth heat pump circulation loop.

9. The dual heat source heat pump system of claim 8, wherein, The double-heat-source heat pump system further comprises a first outdoor condenser and a second outdoor condenser, both of which are arranged in the outdoor finned heat exchanger, and further comprises a first condensing fan arranged around the first outdoor condenser to dissipate heat from the first outdoor condenser and a second condensing fan arranged around the second outdoor condenser to dissipate heat from the second outdoor condenser.

Images