Air energy high-temperature screw coupling heat storage heating system

Abstract

The utility model provides an air energy high-temperature screw coupling heat storage heating system which comprises an air source heat pump, a buffer water tank, a high-temperature screw heat pump, a heat storage water tank, a water collector and a water segregator, the air source heat pump is communicated with the buffer water tank to continuously provide hot water of 40 DEG C for the buffer water tank, and the buffer water tank is communicated with the high-temperature screw heat pump to continuously provide hot water of 40 DEG C for the heat storage water tank. The high-temperature screw heat pump can extract heat from the buffer water tank to heat the heat storage water tank to 70-80 DEG C; power is provided in each circulation loop through a water pump; the water carrying heat is connected to a building to be heated through the water collector to provide heat; and the water is used for backflow of the heated water through the water segregator. The system is high in heat supply efficiency, high in electric energy utilization rate, stable in heat supply, large in temperature rise range, capable of utilizing an air heat source, energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of heating systems, in particular to an air energy high-temperature screw coupled heat storage heating system. Background Art

[0002] Heating systems use heat sources to supply heat to a room, maintaining a constant temperature and creating comfortable living or working conditions. Common heat sources include boilers (gas, coal, and electric), heat pumps, solar collectors, and geothermal systems. These devices generate heat by burning fuel, absorbing ambient heat, or using electricity.

[0003] Existing heating systems for office buildings, offices, hospitals, and other facilities often use boilers to convert biomass or electricity into heat. Using biomass feedstocks like coal can be quite environmentally polluting, while directly using electricity for heating consumes significant energy and is very costly. Furthermore, none of these heating methods can store heat. During periods of low electricity demand, excess power in the grid is wasted and cannot be effectively utilized, impacting energy efficiency during these periods. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides an air energy high temperature screw coupled heat storage heating system.

[0005] The technical solution to be adopted by the present invention to solve its technical problems is: an air-energy high-temperature screw coupled heat storage heating system, including an air source heat pump, a buffer water tank, a high-temperature screw heat pump, a hot water storage tank, a water collector and a water distributor, wherein the air source heat pump is arranged outdoors and is connected to the buffer water tank through a first water supply pipe and a first return pipe to form a first loop, continuously providing 40°C hot water to the buffer water tank, and a first water pump is also provided on the first return pipe to provide power for water circulation in the first loop; the other side of the buffer water tank is connected through the first The second water supply pipe and the second water return pipe are connected to the water supply side of the high-temperature screw heat pump to form a second loop. The second water supply pipe is provided with a second water pump, which is used to provide power for water circulation in the second loop. The high-temperature screw heat pump is arranged indoors and connected to the hot water storage tank through a third water supply pipe and a third water return pipe to form a third loop. The high-temperature screw heat pump can extract heat from the buffer water tank to heat the hot water storage tank to 70-80°C. The third water return pipe is provided with a third water pump, which is used to provide power for water circulation in the third loop.

[0006] The third water return pipe is provided with a fourth water supply pipe, the first water supply pipe is provided with a seventh water supply pipe, the other ends of the fourth and seventh water supply pipes are connected to a water collector, and the water collector is connected to the building to be heated via the sixth water supply pipe to provide heat;

[0007] A fourth return water pipe is provided on the third water supply pipe, and a seventh return water pipe is provided on the first return water pipe. The other ends of the fourth return water pipe and the seventh return water pipe are both connected to a water distributor, and the water distributor is connected to the building to be heated through the sixth return water pipe for the return of water after heating.

[0008] Furthermore, it also includes a ground source heat pump that works at night. The ground source heat pump is connected to the water distributor through the fifth water supply pipe and the fifth return pipe. The ground source heat pump provides heat to the building to be heated through the water distributor.

[0009] Furthermore, it also includes an automatic control system, which includes a computer, and a first controller and a second controller connected to the computer line. The first controller is connected to the air source heat pump through the RS485 serial port, and the air source heat pump is controlled by the computer and the first controller; the computer is directly connected to the high-temperature screw heat pump through the line to control the high-temperature screw heat pump; the second controller is connected to the ground source heat pump through the RS485 serial port, and the ground source heat pump is controlled by the computer and the second controller.

[0010] Furthermore, a first valve is provided on the first water supply pipe, and a second valve is provided on the first water return pipe, and the flow rate and on-off of the first circuit are controlled by the first valve and the second valve.

[0011] Furthermore, it also includes a third valve, a fourth valve and a fifth valve, the third valve is arranged at the connection between the third water supply pipe and the fourth return pipe, the fifth valve is arranged at the connection between the third return pipe and the fourth water supply pipe, and the fourth valve is arranged on the third return pipe between the fifth valve and the high-temperature screw heat pump.

[0012] Preferably, the heating capacity of the high-temperature screw heat pump is 2005KW.

[0013] Preferably, the heating temperature range of the high-temperature screw heat pump is 40°C-80°C.

[0014] The beneficial effects of the present invention are as follows: the present invention provides an air-source high-temperature screw coupled heat storage heating system, (1) adopting an air source heat pump and a high-temperature screw heat pump to jointly form a heating system, replacing a gas boiler, thereby improving the efficiency of heating and optimizing the heating effect; (2) adopting a buffer water tank to buffer between the air source heat pump and the high-temperature screw heat pump, thereby improving the stability of heating; (3) adopting an air source heat pump and a high-temperature screw heat pump to perform two-stage heating, which can reach a temperature of 70°C-80°C, ensuring effective heating, and utilizing air heat sources, which is energy-saving and environmentally friendly; (4) utilizing the period of low electricity consumption to store heat, thereby avoiding the waste of electricity and improving the utilization rate of electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the utility model's air energy high temperature screw coupled heat storage heating system.

[0017] Figure 2 It is the performance diagram of high temperature screw heat pump.

[0018] In the figure: 1. air source heat pump, 2. high-temperature screw heat pump, 3. buffer water tank, 4. hot water storage tank, 5. ground source heat pump, 6. water collector, 7. water distributor, 8. building to be heated, 9. computer, 10. first controller, 11. second controller, 12. first water pump, 13. second water pump, 14. third water pump, 15. first valve, 16. second valve, 17. third valve, 18. fourth valve, 19. fifth valve, 20. first water supply pipe, 21. first return pipe, 22. second return pipe, 23. second water supply pipe, 24. third water supply pipe, 25. third return pipe, 26. fourth water supply pipe, 27. fourth return pipe, 28. fifth water supply pipe, 29. fifth return pipe, 30. sixth water supply pipe, 31. sixth return pipe, 32. seventh water supply pipe, 33. seventh return pipe. DETAILED DESCRIPTION

[0019] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0020] like Figure 1As shown, the utility model is an air-energy high-temperature screw coupled heat storage heating system, comprising an air source heat pump 1, a buffer water tank 3, a high-temperature screw heat pump 2, a hot water storage tank 4, a water collector 6 and a water distributor 7, wherein the air source heat pump 1 is arranged outdoors, and is connected to the buffer water tank 3 through a first water supply pipe 20 and a first return water pipe 21 to form a first circuit, continuously providing 40°C hot water to the buffer water tank 3, and a first water pump 12 is also provided on the first return water pipe 21 for providing power for water circulation in the first circuit; a first valve 15 is provided on the first water supply pipe 20, and a second valve 16 is provided on the first return water pipe 21, and the flow and on-off in the first circuit are controlled by the first valve 15 and the second valve 16. The other side of the buffer water tank 3 is connected to the water supply side of the high-temperature screw heat pump 2 through a second water supply pipe 23 and a second return pipe 22 to form a second loop. The second water supply pipe 23 is provided with a second water pump 13, which is used to provide power for water circulation in the second loop; the high-temperature screw heat pump 2 is arranged indoors and is connected to the hot water storage tank 4 through a third water supply pipe 24 and a third return pipe 25 to form a third loop. The high-temperature screw heat pump 2 can extract heat from the buffer water tank 3 to heat the hot water storage tank 4 to 70-80°C. The third return pipe 25 is provided with a third water pump 14 to provide power for water circulation in the third loop; it also includes a third valve 17, a fourth valve 18 and a fifth valve 19. The third valve 17 is arranged at the connection between the third water supply pipe 24 and the fourth return pipe 27, the fifth valve 19 is arranged at the connection between the third return pipe 25 and the fourth water supply pipe 26, and the fourth valve 18 is arranged on the third return pipe 25 between the fifth valve 19 and the high-temperature screw heat pump 2. The third water return pipe 25 is provided with a fourth water supply pipe 26, and the first water supply pipe 20 is provided with a seventh water supply pipe 32. The other ends of the fourth and seventh water supply pipes 26 and 32 are both connected to the manifold 6, which is connected to the building to be heated 8 via the sixth water supply pipe 30 to provide heat. The third water supply pipe 24 is provided with a fourth water return pipe 27, and the first water return pipe 21 is provided with a seventh water return pipe 33. The other ends of the fourth and seventh water return pipes 27 and 33 are both connected to the manifold 7, which is connected to the building to be heated 8 via the sixth water return pipe 31 to return the heated water. In this embodiment, the first valve 15, the second valve 16, the third valve 17, and the fifth valve 19 are automatic three-way valves, and the fourth valve 18 is an automatic two-way valve.

[0021] Furthermore, it also includes a ground-source heat pump 5 operating at night, which is connected to the water distributor 7 via a fifth water supply pipe 28 and a fifth return water pipe 29. The ground-source heat pump 5 provides heat to the building to be heated through the water distributor 7. Furthermore, it also includes an automatic control system, which includes a computer 9, and a first controller 10 and a second controller 11 connected to the computer 9. The first controller 10 is connected to the air-source heat pump 1 via an RS485 serial port, and the air-source heat pump 1 is controlled by the computer 9 and the first controller 10; the computer 9 is directly connected to the high-temperature screw heat pump 2 via a line to control the high-temperature screw heat pump 2; the second controller 11 is connected to the ground-source heat pump 5 via an RS485 serial port, and the ground-source heat pump 5 is controlled by the computer 9 and the second controller 11.

[0022] like Figure 2 As shown, in this embodiment, preferably, the high-temperature screw heat pump 2 adopts model TWSF0570.1FW1, with a heating capacity of 2005KW, dimensions of length, width and height: 3750*2700*2810mm, operating weight: 6500kG, and the heating temperature range of the high-temperature screw heat pump 2 is 40℃-80℃.

[0023] High-temperature screw heat pump units utilize waste heat up to 40°C as a heat source, providing high-quality hot water at temperatures up to 80°C. These units offer a hot water solution for a variety of industrial applications, including petroleum and fermentation. Equipped with oil cooling and an economizer, these units ensure efficient and stable operation in high-temperature conditions, reducing electricity and gas consumption.

[0024] Operation logic:

[0025] The entire system of this utility model is that the units all work at night and do not work during the day, and use the low electricity consumption period at night to store heat. Its operating logic is as follows:

[0026] 1. According to calculations, from midnight 00:00 to 8:00, the air source heat pump 1 continuously supplies 40°C hot water to the buffer water tank 3 (heating the buffer water tank 3). The water temperature in the first water supply pipe 20 is 40°C, and the water temperature in the first return pipe 21 is 35°C. During this period, the high-temperature screw heat pump 2 extracts heat from the buffer water tank 3 and heats the water in the hot water storage tank 4 from 50°C to 70°C. The water temperature in the second water supply pipe 23 is 38°C, and the water temperature in the second return pipe 22 is 30°C. The water temperature in the third water supply pipe 24 is approximately 70°C-80°C, and the water temperature in the third return pipe 25 is ≥50°C.

[0027] When storing heat in the hot water storage tank 4, the third valve 17, the fourth valve 18 and the fifth valve 19 are controlled to connect the high-temperature screw heat pump 2 with the hot water storage tank 4. When supplying heat to the building 8 to be heated, the fourth valve 18 is closed, and the third valve 17 and the fifth valve 19 are controlled to connect the hot water storage tank 4 with the water collector 6 through the fourth water supply pipe 26 and with the water distributor 7 through the fourth return pipe 27. The heat from the hot water storage tank 4 is supplied to the building 8 to be heated through the water collector 6 and the water distributor 7 for heating and providing domestic hot water.

[0028] 2. It is designed that the nighttime heating load is borne by the ground source heat pump 5. The water heated by the ground source heat pump 5 flows through the fifth water supply pipe 28 to the water distributor 7. The water temperature in the pipe is about 50°C. The hot water in the fifth return pipe 29 flows back to the ground source heat pump 5 for circulation heating. The return water temperature is about 40°C.

[0029] 3. During the non-heat storage working period, the heat storage water tank 4 provides heating. At this time, the air source heat pump 1 and the ground source heat pump 5 can be used as heat supplement depending on the load demand.

[0030] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An air energy high temperature screw coupled heat storage heating system, characterized by: It includes an air source heat pump, a buffer water tank, a high-temperature screw heat pump, a hot water storage tank, a water collector and a water distributor, wherein the air source heat pump is arranged outdoors and is connected to the buffer water tank through a first water supply pipe and a first return pipe to form a first circuit, continuously providing 40°C hot water to the buffer water tank, and a first water pump is also provided on the first return pipe; the other side of the buffer water tank is connected to the water supply side of the high-temperature screw heat pump through a second water supply pipe and a second return pipe to form a second circuit, and a second water pump is provided on the second water supply pipe; the high-temperature screw heat pump is arranged indoors and is connected to the hot water storage tank through a third water supply pipe and a third return pipe to form a third circuit, the high-temperature screw heat pump can extract heat from the buffer water tank to heat the hot water storage tank to 70-80°C, and a third water pump is provided on the third return pipe; The third water return pipe is provided with a fourth water supply pipe, the first water supply pipe is provided with a seventh water supply pipe, the other ends of the fourth and seventh water supply pipes are connected to a water collector, and the water collector is connected to the building to be heated via the sixth water supply pipe to provide heat; The third water supply pipe is provided with a fourth return pipe, the first return pipe is provided with a seventh return pipe, the other ends of the fourth return pipe and the seventh return pipe are connected to a water distributor, and the water distributor is connected to the building to be heated through the sixth return pipe.

2. The air energy high temperature screw coupled heat storage heating system according to claim 1, characterized in that: It also includes a ground source heat pump that works at night. The ground source heat pump is connected to the water distributor through the fifth water supply pipe and the fifth return pipe. The ground source heat pump provides heat to the building to be heated through the water distributor.

3. The air energy high temperature screw coupled heat storage heating system according to claim 1, characterized in that: It also includes an automatic control system, which includes a computer, and a first controller and a second controller connected to the computer line. The first controller is connected to the air source heat pump through an RS485 serial port; the computer is directly connected to the high-temperature screw heat pump through a line; and the second controller is connected to the ground source heat pump through an RS485 serial port.

4. The air-energy high-temperature screw coupled thermal storage heating system according to claim 1, characterized in that: The first water supply pipe is provided with a first valve, and the first water return pipe is provided with a second valve, and the flow and on-off of the first circuit are controlled by the first valve and the second valve.

5. The air energy high temperature screw coupled heat storage heating system according to claim 1, characterized in that: It also includes a third valve, a fourth valve and a fifth valve. The third valve is arranged at the connection between the third water supply pipe and the fourth return pipe, the fifth valve is arranged at the connection between the third return pipe and the fourth water supply pipe, and the fourth valve is arranged on the third return pipe between the fifth valve and the high-temperature screw heat pump.

6. The air energy high temperature screw coupled thermal storage heating system according to claim 1, characterized in that: The heating capacity of the high-temperature screw heat pump is 2005KW.

7. The air energy high temperature screw coupled thermal storage heating system according to claim 1, characterized in that: The heating temperature range of the high-temperature screw heat pump is 40°C-80°C.

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