Air-water source heat pump combined energy supply system

Abstract

This utility model discloses an air-source heat pump combined energy supply system, including an air-source heat pump unit, a water-source heat pump unit, a combined energy supply tank, a water distributor, and a water collector. An energy supply pipeline connects the combined energy supply tank and the water-source heat pump unit. The energy supply system also includes a first plate heat exchanger and a finned radiator. The energy supply inlet of the first plate heat exchanger is connected to the return water pipeline of the water-source heat pump unit, and the energy supply outlet of the first plate heat exchanger is connected to the return water pipeline of the water-source heat pump unit. The energy harvesting outlet of the first plate heat exchanger is connected to one end of the heat dissipation tube in the finned radiator, and the energy harvesting inlet of the first plate heat exchanger is connected to the other end of the heat dissipation tube in the finned radiator. The finned radiator is located within the air intake range of the air heat exchanger. Through the coordinated operation of the air-source heat pump and the water-source heat pump, combined with the combined energy supply tank and multi-pipeline control, flexible energy supply under different load conditions is achieved, improving the system's adaptability and stability.

Description

Technical Field

[0001] This utility model belongs to the field of heat pump energy supply technology, specifically relating to an air-water source heat pump combined energy supply system. Background Technology

[0002] In existing heat pump energy supply systems, air source heat pumps and water source heat pumps typically operate independently, each with its own limitations. Air source heat pumps are prone to frosting in low-temperature and high-humidity environments, leading to decreased heat exchange efficiency and even malfunction. While water source heat pumps operate stably, their heating capacity may not meet user needs when heating loads surge or heat source temperatures fluctuate.

[0003] Furthermore, existing systems lack effective heat recovery and reuse, resulting in insufficient utilization of waste heat in the return water and energy waste. Therefore, there is an urgent need for a solution that can integrate the advantages of air-source and water-source heat pumps to achieve efficient combined energy supply and heat recovery functions. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an air-water source heat pump combined energy supply system.

[0005] The technical solution for realizing this utility model is as follows: The air-source heat pump combined energy supply system includes an air-source heat pump unit, a water-source heat pump unit, a combined energy supply water tank, a water distributor, and a water collector. The water supply pipe of the water-source heat pump unit is connected to the water distributor, and the return water pipe of the water-source heat pump unit is connected to the water collector. The air-source heat pump unit includes an air heat exchanger and a water-side heat exchanger. The water-side outlet of the water-side heat exchanger is connected to the combined energy supply water tank through a first pipe. A power supply pipeline connects the combined power supply water tank and the water supply pipeline of the water source heat pump unit. A power supply control valve and a power supply water pump are installed on the power supply pipeline. The energy supply system also includes a first plate heat exchanger and a finned radiator; the energy supply inlet of the first plate heat exchanger is connected to the return water pipe of the water source heat pump unit through a second pipe, and the energy supply outlet of the first plate heat exchanger is connected to the return water pipe of the water source heat pump unit through a third pipe. A first control valve is installed on the second pipe, and a second control valve is installed on the return water pipe of the water source heat pump unit located between the second and third pipes. The energy-generating outlet of the first plate heat exchanger is connected to one end of the heat dissipation tube in the finned radiator through the fourth pipe. A first water pump and a third control valve are installed on the fourth pipe. The energy-generating inlet of the first plate heat exchanger is connected to the other end of the heat dissipation tube in the finned radiator through the fifth pipe. The finned radiator is located within the air intake range of the air heat exchanger.

[0006] It also includes a second plate heat exchanger; the power supply inlet of the second plate heat exchanger is connected to the fourth pipe through the sixth pipe, and a fourth control valve is installed on the sixth pipe; the power supply outlet of the second plate heat exchanger is connected to the fifth pipe through the seventh pipe. The energy-collecting inlet of the second plate heat exchanger is connected to the water source side inlet of the water source heat pump unit through the eighth pipe, and a fifth control valve is installed on the eighth pipe; the energy-collecting outlet of the second plate heat exchanger is connected to the water source side inlet of the water source heat pump unit through the ninth pipe; a sixth control valve is installed on the water source side inlet of the water source heat pump unit located between the eighth and ninth pipes.

[0007] It also includes a terminal water tank and a makeup water tank. The water-side outlet of the water-side heat exchanger is connected to a tenth pipe. The tenth pipe is connected to the terminal water tank. A seventh control valve is installed on the tenth pipe, and an eighth control valve is installed on the first pipe. The water supply tank is connected to the water-side inlet of the water-side heat exchanger via the eleventh pipe. A water supply pump is installed on the eleventh pipe. The water supply tank is also connected to a water supply pipe, on which a water supply control valve is installed.

[0008] The terminal water tank and the combined power supply water tank are respectively equipped with a level gauge and a second temperature sensor; the water replenishment pump is driven by a variable frequency motor. The level gauge in the terminal water tank is connected to the seventh control valve; the level gauge in the combined power supply water tank is connected to the eighth control valve; the terminal water tank is connected to the terminal water supply pipeline.

[0009] The finned radiator is installed in a housing, with both ends of the housing being open to each other, and the housing provides an installation space for the finned radiator. The housing is bolted to the outside of the air inlet of the air source heat pump unit, and the inside of the housing is open to the air inlet of the air source heat pump unit. The finned radiator is detachably assembled inside the housing, and the finned radiator does not extend outside the housing; the lower part of the outer side of the housing is provided with inlet pipes and outlet pipes that are respectively connected to the two ends of the heat dissipation pipes of the finned radiator.

[0010] The heat dissipation pipes in the finned radiator are arranged in a single layer with multiple detours. Fixed clamping structures for clamping the heat dissipation pipes are respectively provided on both sides of the shell. The fixed clamping structures include two fixed clamping plates, which are arranged along the height direction inside the shell. The upper and lower ends of the fixed clamping plates are respectively connected to the inner wall of the shell by bolts. A clamping space for clamping the heat dissipation pipes is formed between the inner surfaces of the two fixed clamping plates. A receiving groove with a shape adapted to the corresponding position of the heat dissipation pipe is provided on the inner side of the positioning plate.

[0011] By adopting the above technical solution, this utility model has the following technical effects: By coordinating the operation of air source heat pumps and water source heat pumps, combined with a joint energy supply tank and multi-pipeline control, flexible energy supply under different load conditions is achieved, improving the system's adaptability and stability.

[0012] By utilizing the first plate heat exchanger and finned radiator, waste heat from the return water of the water source heat pump is recovered to preheat the air heat exchanger, effectively preventing or delaying frost formation and improving the operating efficiency of the air source heat pump in low-temperature environments.

[0013] The water source is preheated by a second plate heat exchanger to stabilize the operation of the water source heat pump and improve the overall energy efficiency of the system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the system of this utility model; Figure 2 This is a side view of the air source heat pump in this utility model. Figure 3 This is a schematic diagram of the structure of the finned radiator of this utility model; The markings in the attached diagram represent: 1. Air source heat pump unit, 2. Water source heat pump unit, 3. Combined energy supply water tank, 4. Water distributor, 5. Water collector, 6. Circulating water pump, 7. Air source heat pump unit housing, 8. Air heat exchanger, 9. Water-side heat exchanger. 10. Compressor, 11. Expansion valve, 12. Fan, 13. First pipeline, 14. Power supply pipeline, 15. Power supply control valve, 16. Power supply water pump, 17. First plate heat exchanger, 18. Finned radiator, 19. Second pipeline. 20. Third pipe, 21. First control valve, 22. Second control valve, 23. Fourth pipe, 24. First water pump, 25. Third control valve, 26. Second plate heat exchanger, 27. Sixth pipe, 28. Fourth control valve, 29. Seventh pipe; 30. Eighth pipe, 31. Fifth control valve, 32. Ninth pipe, 33. Sixth control valve, 34. Terminal water tank, 35. Make-up water tank, 36. Tenth pipe, 37. Seventh control valve, 38. Eighth control valve, 39. Eleventh pipe; 40. Water supply pump; 41. Water supply pipe; 42. Water supply control valve; 43. Housing; 44. Inlet pipe; 45. Outlet pipe; 46. Fixed clamp plate; 47. Heat dissipation pipe; 48. Fifth pipe. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] Please see Figure 1-3 As shown, the air-source heat pump combined energy supply system includes an air-source heat pump unit 1, a water-source heat pump unit 2, a combined energy supply water tank 3, a water distributor 4, and a water collector 5. The water supply pipe of the water-source heat pump unit 2 is connected to the water distributor 4. Water discharged from the water supply pipe enters the water distributor 4 and is then transported to the user's pipeline through the water distributor 4. The return water pipe of the water-source heat pump unit 2 is connected to the water collector 5. Water from the user's end flows into the water collector 5 and is then transported to the return water pipe by the water collector 5, returning to the water-source heat pump unit 2 for circulation and heat exchange. The water collector 5 and the water distributor 4 are powered by a circulating water pump 6 to generate the flow capacity in the pipeline system.

[0017] The air source heat pump unit 1 includes an air source heat pump unit housing 7, and an air heat exchanger 8, a water-side heat exchanger 9, a compressor 10, an expansion valve 11, and a fan 12 arranged in the air source heat pump unit housing 7. The air heat exchanger 8 is used to exchange heat with the outside air, the water-side heat exchanger 9 is used to exchange heat with the water passing through it, the compressor 10 is used to compress the circulating medium in the air source heat pump unit 1, the fan is mounted on the top of the air source heat pump unit housing 7, and an air inlet is provided on the side of the air source heat pump unit housing 7. The fan 11 is used to draw outside air into the air source heat pump unit housing 7 through the air inlet to exchange heat with the air heat exchanger 8.

[0018] The water-side outlet of the water-side heat exchanger 9 is connected to the combined energy supply water tank 3 via a first pipe 13. Water passing through the water-side heat exchanger 9 enters the combined energy supply water tank 3 through the first pipe 13. A power supply pipe 14 connects the combined energy supply water tank 3 to the water supply pipe of the water source heat pump unit 2. A power supply control valve 15 and a power supply water pump 16 are installed on the power supply pipe 14. In winter heating mode, the outlet water temperature of the air source heat pump is set to 55-60℃, and the outlet water temperature of the water source heat pump is set to 40-45℃. Under normal heating conditions, the water source heat pump unit 2 can meet the requirements. However, when the heating load on the user side increases, the outlet water from both the air source heat pump and the water source heat pump can be supplied to the user for heating. Since the outlet water temperature of the air source heat pump is higher than that of the water source heat pump, the high-temperature outlet water from the air source heat pump can enhance the stability of the heating supply. That is, by opening the power supply control valve 15 and starting the power supply water pump 16, water in the combined power supply water tank 3 is transported through the power supply pipeline 14 to the outlet pipeline of the water source heat pump unit 2.

[0019] An overflow tank connected to the water collector 5 can be installed at the water collector 5. An overflow pipe is connected to the overflow tank, and an overflow valve is installed on the overflow tank. When the pressure in the circulation pipeline on the water supply side of the water source heat pump unit is greater than the set pressure, the overflow valve opens and the overflow fluid is discharged outward through the overflow pipe to stabilize the system stability in the circulation pipeline on the water supply side of the water source heat pump unit.

[0020] The energy supply system also includes a first plate heat exchanger 17 and a finned radiator 18. The energy supply inlet of the first plate heat exchanger 17 is connected to the return water pipe of the water source heat pump unit 2 through a second pipe 19, and the energy supply outlet of the first plate heat exchanger 17 is connected to the return water pipe of the water source heat pump unit 2 through a third pipe 20. A first control valve 21 is installed on the second pipe 19, and a second control valve 22 is installed on the return water pipe of the water source heat pump unit 2 located between the second pipe 19 and the third pipe 20. The return water flowing back from the water collector 5 to the water source heat pump unit 2 still has a certain temperature, and this part of the heat can be exchanged out through the first plate heat exchanger 17. That is, when the second control valve 22 is closed and the first control valve 21 is opened, the return water flows back to the water source heat pump unit 2 after passing through the second pipe 19, the first plate heat exchanger 17, and the third pipe 20.

[0021] The energy-acquiring outlet of the first plate heat exchanger 17 is connected to one end of the heat dissipation tube 47 in the finned radiator 18 through the fourth pipe 23. A first water pump 24 and a third control valve 25 are installed on the fourth pipe 23. The energy-acquiring inlet of the first plate heat exchanger 17 is connected to the other end of the heat dissipation tube 47 in the finned radiator 18 through the fifth pipe 48. The finned radiator 18 is located within the air intake range of the air heat exchanger 8. The first water pump 24 circulates the circulating fluid between the fourth pipe 23, the first plate heat exchanger 17, and the finned radiator 18. In winter, the air heat exchanger 8 will frost over. Before the air source heat pump is started, the return water temperature of the water source heat pump unit 2 can be transferred to the finned radiator 18 through the first plate heat exchanger 17, so that the finned radiator 18 radiates heat to the surroundings. By starting the fan, the heat is diverted to the air heat exchanger 8 to speed up the disappearance of the frost on the outer surface of the air heat exchanger 8, so that the air source heat pump can be started stably.

[0022] The energy supply system also includes a second plate heat exchanger 26; the energy supply inlet of the second plate heat exchanger 26 is connected to the fourth pipe 23 through the sixth pipe 27, and a fourth control valve 28 is installed on the sixth pipe 27; the energy supply outlet of the second plate heat exchanger 26 is connected to the fifth pipe 48 through the seventh pipe 29; the energy harvesting inlet of the second plate heat exchanger 26 is connected to the water source side inlet pipe of the water source heat pump unit 2 through the eighth pipe 30, and a fifth control valve 31 is installed on the eighth pipe 30; the energy harvesting outlet of the second plate heat exchanger 26 is connected to the water source side inlet pipe of the water source heat pump unit 2 through the ninth pipe 32; a sixth control valve 33 is installed on the water source side inlet pipe of the water source heat pump unit 2 located between the eighth pipe 30 and the ninth pipe 32. When the finned radiator 18 needs heat exchange, the third control valve 25 is opened and the fourth control valve 28 is closed. When the second plate heat exchanger 26 is needed to stabilize the inlet water temperature of the water source heat pump unit 2, the third control valve 25 is closed and the fourth control valve 28 is opened. In this way, the water that has been heat exchanged by the first plate heat exchanger 17 can enter the second plate heat exchanger 26 through the sixth pipe 27 and return through the seventh pipe 29. The inlet water of the water source heat pump unit flows through the second plate heat exchanger 26 by closing the sixth control valve 33 and opening the fifth control valve 31.

[0023] The energy supply system also includes a terminal water tank 34 and a makeup water tank 35. The water-side outlet of the water-side heat exchanger 9 is connected to a tenth pipe 36, which is connected to the terminal water tank 34. A seventh control valve 37 is installed on the tenth pipe 36, and an eighth control valve 38 is installed on the first pipe 13. By controlling the seventh control valve 37 and the eighth control valve 38, the outlet water of the water-side heat exchanger 9 can be introduced into the terminal water tank 34 and the combined energy supply water tank 3. The terminal water tank 34 is connected to a terminal water supply pipe. The terminal water tank 34 can be used to provide water for the underfloor heating pipes. It is set up separately from the combined energy supply water tank 3 so that it has an independent water storage space and reduces mutual water supply interference.

[0024] The water supply tank 35 is connected to the water-side inlet of the water-side heat exchanger 9 via the eleventh pipe 39 for water to flow into the water-side heat exchanger 9. A water supply pump 40 is installed on the eleventh pipe 39 for pumping water from the water supply tank 35 into the water-side heat exchanger 9. The water supply tank 35 is also connected to a water supply pipe 41 for water supply to the water supply tank 35. A water supply control valve 42 is installed on the water supply pipe 41 for controlling the flow of water through the water supply pipe into the water supply tank 35.

[0025] Both the terminal water tank 34 and the combined power supply water tank 3 are insulated water tanks. The terminal water tank 34 and the combined power supply water tank 3 are respectively equipped with a level gauge and a second temperature sensor to monitor the water level and water temperature in their respective water tanks; the water replenishment pump is driven by a variable frequency motor.

[0026] The level gauge in the terminal water tank 34 is connected to the seventh control valve 37; the level gauge in the combined power supply water tank 3 is connected to the eighth control valve 38. When the water level in the terminal water tank 34 is lower than the set value, the seventh control valve 37 is opened; similarly, when the water level in the combined power supply water tank 3 is lower than the set value, the eighth control valve 38 is opened. When the water levels in both tanks meet the set values, the operation of the air source heat pump unit 1 is suspended.

[0027] The finned radiator 18 is installed as a whole in a housing 43, with both ends of the housing 43 being through-holes, and the housing 43 forming an installation space for the finned radiator 18. The outer periphery of the housing 43 is bolted to the outside of the air inlet of the air source heat pump unit box 7, and the inside of the housing 43 is through-holes with the air inlet of the air source heat pump unit box 7. When a negative pressure is generated inside the housing 43 by a fan, the air outside the housing 43 can enter the air source heat pump unit box 7 through the housing 43 and the air inlet, that is, exchange heat with the air heat exchanger 8 in the air source heat pump unit 1.

[0028] The finned radiator 18 is detachably installed inside the housing 43 for easy installation, disassembly and maintenance. The finned radiator 18 does not extend outside the housing 43 to avoid unnecessary collision damage caused by the finned radiator 18 being exposed outside the housing 43. A mesh cover can also be installed on the outside of the housing 43 to protect the finned radiator 18. The lower part of the outside of the housing 43 is provided with an inlet pipe 44 and an outlet pipe 45 that are respectively connected to the two ends of the heat dissipation pipe of the finned radiator 18 for connecting to the fourth pipe 23 and the fifth pipe 48.

[0029] The heat dissipation pipes in the finned radiator 18 are arranged in a single layer with multiple detours, and heat dissipation aluminum fins are arranged on the heat dissipation pipes. Fixed clamping structures for clamping the heat dissipation pipes are respectively provided on both sides inside the shell 43. The fixed clamping structures include two fixed clamping plates 46 arranged inside and outside, respectively. The fixed clamping plates 46 are made of stainless steel and have a certain load-bearing strength. The fixed clamping plates 46 are arranged along the height direction inside the shell 43, and the upper and lower ends of the fixed clamping plates 46 are respectively bolted to the inner wall of the shell 43, that is, the upper and lower ends of the fixed clamping plates 46 form an outward 90-degree bend. The mounting section is bolted to the inner wall of the housing 43. A clamping space is formed between the inner surfaces of the two fixed clamping plates 46 to hold the heat dissipation pipes, allowing the two ends of the heat dissipation pipes after their detour to be inserted and clamped. A receiving groove adapted to the shape of the corresponding position of the heat dissipation pipe is provided on the inner side of the positioning plate; that is, the receiving groove adapts to the detour of both ends of the detoured heat dissipation pipe. After the detour is placed in the receiving groove, it forms a locking position to enhance the stability between the two fixed clamping plates 46. Bolts can be added at the middle position of the two fixed clamping plates 46 to connect them and enhance the connection stability.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An air-source heat pump combined energy supply system, comprising an air-source heat pump unit, a water-source heat pump unit, a combined energy supply water tank, a water distributor, and a water collector; the water supply pipe of the water-source heat pump unit is connected to the water distributor, and the return water pipe of the water-source heat pump unit is connected to the water collector; the air-source heat pump unit includes an air heat exchanger and a water-side heat exchanger, and the water-side outlet of the water-side heat exchanger is connected to the combined energy supply water tank through a first pipe, characterized in that, A power supply pipeline connects the combined power supply water tank and the water supply pipeline of the water source heat pump unit. A power supply control valve and a power supply water pump are installed on the power supply pipeline. The energy supply system also includes a first plate heat exchanger and a finned radiator; the energy supply inlet of the first plate heat exchanger is connected to the return water pipe of the water source heat pump unit through a second pipe, and the energy supply outlet of the first plate heat exchanger is connected to the return water pipe of the water source heat pump unit through a third pipe. A first control valve is installed on the second pipe, and a second control valve is installed on the return water pipe of the water source heat pump unit located between the second and third pipes. The energy-generating outlet of the first plate heat exchanger is connected to one end of the heat dissipation tube in the finned radiator through the fourth pipe. A first water pump and a third control valve are installed on the fourth pipe. The energy-generating inlet of the first plate heat exchanger is connected to the other end of the heat dissipation tube in the finned radiator through the fifth pipe. The finned radiator is located within the air intake range of the air heat exchanger.

2. The air-water source heat pump combined energy supply system as described in claim 1, characterized in that, It also includes a second plate heat exchanger; the power supply inlet of the second plate heat exchanger is connected to the fourth pipe through the sixth pipe, and a fourth control valve is installed on the sixth pipe; the power supply outlet of the second plate heat exchanger is connected to the fifth pipe through the seventh pipe. The energy-collecting inlet of the second plate heat exchanger is connected to the water source side inlet of the water source heat pump unit through the eighth pipe, and a fifth control valve is installed on the eighth pipe; the energy-collecting outlet of the second plate heat exchanger is connected to the water source side inlet of the water source heat pump unit through the ninth pipe; a sixth control valve is installed on the water source side inlet of the water source heat pump unit located between the eighth and ninth pipes.

3. The air-water source heat pump combined energy supply system as described in claim 1, characterized in that, It also includes a terminal water tank and a makeup water tank. The water-side outlet of the water-side heat exchanger is connected to a tenth pipe. The tenth pipe is connected to the terminal water tank. A seventh control valve is installed on the tenth pipe, and an eighth control valve is installed on the first pipe. The water supply tank is connected to the water-side inlet of the water-side heat exchanger via the eleventh pipe. A water supply pump is installed on the eleventh pipe. The water supply tank is also connected to a water supply pipe, on which a water supply control valve is installed.

4. The air-water source heat pump combined energy supply system as described in claim 1, characterized in that, The terminal water tank and the combined power supply water tank are respectively equipped with a level gauge and a second temperature sensor; the water replenishment pump is driven by a variable frequency motor. The level gauge in the terminal water tank is connected to the seventh control valve; the level gauge in the combined power supply water tank is connected to the eighth control valve; the terminal water tank is connected to the terminal water supply pipeline.

5. The air-water source heat pump combined energy supply system as described in claim 1, characterized in that, The finned radiator is installed in a housing, with both ends of the housing being open to each other, and the housing provides an installation space for the finned radiator. The housing is bolted to the outside of the air inlet of the air source heat pump unit, and the inside of the housing is open to the air inlet of the air source heat pump unit. The finned radiator is detachably assembled inside the housing, and the finned radiator does not extend outside the housing; the lower part of the outer side of the housing is provided with inlet pipes and outlet pipes that are respectively connected to the two ends of the heat dissipation pipes of the finned radiator.

6. The air-water source heat pump combined energy supply system as described in claim 1, characterized in that, The heat dissipation pipes in the finned radiator are arranged in a single layer with multiple detours. Fixed clamping structures for clamping the heat dissipation pipes are respectively provided on both sides of the shell. The fixed clamping structures include two fixed clamping plates, which are arranged along the height direction inside the shell. The upper and lower ends of the fixed clamping plates are respectively connected to the inner wall of the shell by bolts. A clamping space for clamping the heat dissipation pipes is formed between the inner surfaces of the two fixed clamping plates. A receiving groove with a shape adapted to the corresponding position of the heat dissipation pipe is provided on the inner side of the positioning plate.

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