Combined cycle heat pump system

Abstract

This invention provides a combined cycle heat pump system, belonging to the field of heat pump technology. An external gas channel connects to a compressor and a high-temperature heat exchanger, which in turn connects to a high-temperature expander. The high-temperature expander also has a gas channel connecting to a high-temperature heater and a steam generator before connecting to the outside. A second compressor has a refrigerant vapor channel connecting to the heater. The heater connects to the steam generator via a booster pump and to the evaporator via a throttling valve. The steam generator connects to the high-pressure steam inlet of the ejector, and the evaporator connects to the low-pressure steam inlet of the ejector. The ejector also has a medium-pressure refrigerant vapor channel connecting to the second compressor. The high-temperature heat exchanger also has a high-temperature heat medium channel connecting to the outside. The high-temperature heater and the heat exchanger each have a heated medium channel connecting to the outside, and the evaporator also has a low-temperature heat medium channel connecting to the outside, thus forming a combined cycle heat pump system.

Description

Technical fields:

[0001] This invention belongs to the field of thermodynamics and heat pump technology. Background technology:

[0002] Using heat pump technology to obtain cold / heat / steam / power is an important means to achieve efficient and high-value energy utilization. In practical applications, it is necessary to comprehensively consider the heat pump's operating parameters, performance index, manufacturing cost, adaptability, as well as the characteristics of different energy sources and targeted technical means.

[0003] Many industrial production processes generate high-temperature associated heat resources, and non-high-quality fuels can be combusted to form high-temperature heat resources. How to achieve efficient and high-value utilization of high-temperature heat resources in refrigeration / heating / steam production / power is a major technical challenge.

[0004] Vapor compression heat pump technology, which operates on the principle of reverse Rankine cycle, has the advantage of being able to achieve constant-temperature heat absorption; however, meeting the demand for high-parameter heating or steam is technically challenging.

[0005] An ejector is a pressure-boosting component that effectively utilizes high-temperature heat resources. It has the advantages of simple structure, reliable operation, low investment and long service life. In addition, compared with compressors, ejectors are more adaptable to the compression of wet steam.

[0006] Based on the fundamental principles of simple and efficient utilization of high-temperature heat resources for refrigeration / heating / steam generation / power, this invention presents a combined cycle heat pump system that integrates technologies, has a reasonable process, a simple structure, multiple functions, and achieves rationalized performance indices. Summary of the Invention:

[0007] The main objective of this invention is to provide a combined cycle heat pump system, the specific contents of which are described below:

[0008] 1. A combined cycle heat pump system mainly consists of a compressor, a high-temperature heat exchanger, a high-temperature expander, a high-temperature heater, a steam generator, a second compressor, a heater, a booster pump, a throttling valve, an evaporator, and an ejector. It has an external gas passage connecting to the compressor, a gas passage connecting the compressor to the high-temperature expander via the high-temperature heat exchanger, a gas passage connecting the high-temperature expander to the high-temperature heater and steam generator before connecting to the external system, a refrigerant vapor passage connecting the second compressor to the heater, and a condensate line connecting the heater to the steam generator via the booster pump. This system provides heating. The system also includes a condensate pipeline connected to the evaporator via a throttling valve; a steam generator connected to the high-pressure steam inlet of the ejector via a steam channel; an evaporator connected to the low-pressure steam inlet of the ejector via a refrigerant steam channel; and a medium-pressure refrigerant steam channel connected to the second compressor via a medium-pressure refrigerant steam channel. The high-temperature heat exchanger also has a high-temperature heat medium channel connected to the outside. The high-temperature heater and the heat exchanger each have a heated medium channel connected to the outside. The evaporator also has a low-temperature heat medium channel connected to the outside. The high-temperature expander connects to the compressor and the second compressor and transmits power, forming a combined cycle heat pump system.

[0009] 2. A combined cycle heat pump system is a combined cycle heat pump system described in item 1, in which a high-temperature regenerator is added, and the gas passage of the compressor is connected to the high-temperature heat exchanger, which is then connected to the high-temperature heat exchanger via the high-temperature regenerator. The gas passage of the high-temperature expander is connected to the high-temperature heater, which is then connected to the high-temperature heater via the high-temperature regenerator.

[0010] 3. A combined cycle heat pump system is a combined cycle heat pump system described in item 1, with the addition of a high-temperature regenerator. The gas passage of the compressor is connected to the high-temperature heat exchanger, and the gas passage of the high-temperature expander is connected to the high-temperature heater, and the gas passage of the high-temperature expander is connected to itself via the high-temperature regenerator, and then the high-temperature expander has a gas passage connected to the high-temperature heater, thus forming a combined cycle heat pump system.

[0011] 4. A combined cycle heat pump system is a combined cycle heat pump system described in item 1, with the addition of a high-temperature regenerator. The gas passage of the compressor is connected to the high-temperature heat exchanger, and the gas passage of the compressor is connected to itself via the high-temperature regenerator. The gas passage of the high-temperature expander is connected to the high-temperature heater, and the gas passage of the high-temperature expander is connected to the high-temperature heater via the high-temperature regenerator, thus forming a combined cycle heat pump system.

[0012] 5. A combined cycle heat pump system is any one of the combined cycle heat pump systems described in items 1-4, with the addition of a regenerator. The heating unit is modified so that the condensate pipe is connected to the evaporator via a throttling valve, while the heating unit is modified so that the condensate pipe is connected to the evaporator via the regenerator and the throttling valve. The ejector is modified so that the refrigerant vapor passage is connected to the second compressor, while the ejector is modified so that the refrigerant vapor passage is connected to the second compressor via the regenerator, thus forming a combined cycle heat pump system.

[0013] 6. A combined cycle heat pump system is any one of the combined cycle heat pump systems described in items 1-4, with the addition of a regenerator. The original system is modified so that the condensate pipe of the heater is connected to the evaporator via a throttling valve, and the condensate pipe of the heater is connected to the evaporator via the regenerator and the throttling valve. The original system is modified so that the refrigerant vapor passage of the evaporator is connected to the low-pressure steam inlet of the ejector, and the refrigerant vapor passage of the evaporator is connected to the low-pressure steam inlet of the ejector after passing through the regenerator, thus forming a combined cycle heat pump system.

[0014] 7. A combined cycle heat pump system, which is any one of the combined cycle heat pump systems described in items 1-4, with the addition of a regenerator and a second regenerator. The condensate pipe of the heating unit is connected to the evaporator via a throttling valve, and the connection is adjusted so that the condensate pipe of the heating unit is connected to the evaporator via the regenerator, the second regenerator, and the throttling valve. The refrigerant vapor passage of the evaporator is connected to the low-pressure steam inlet of the ejector, and the refrigerant vapor passage of the evaporator is connected to the low-pressure steam inlet of the ejector after passing through the second regenerator. The refrigerant vapor passage of the ejector is connected to the second compressor, and the connection is adjusted so that the refrigerant vapor passage of the ejector is connected to the second compressor via the regenerator, thus forming a combined cycle heat pump system.

[0015] 8. A combined cycle heat pump system, which is any of the combined cycle heat pump systems described in items 1-4, with the addition of a regenerator, an expander, and a second heater. The second compressor is adjusted so that it has a refrigerant vapor channel connected to the heater, and then splits into two paths—the first path connects to the heater and the second path connects to the expander. The expander also has a refrigerant vapor channel connected to the regenerator, and then connected to the second compressor through an intermediate port. The heater has a condensate line connected to the evaporator through a throttling valve, and is adjusted so that the heater has a refrigerant medium line (either fully condensed or partially condensed) connected to the evaporator through the regenerator and the throttling valve. The second heater also has a heated medium channel connected to the outside. The expander is connected to the second compressor and transmits power, forming a combined cycle heat pump system.

[0016] 9. A combined cycle heat pump system, which is any one of the combined cycle heat pump systems described in items 1-4, with the addition of a regenerator, a second regenerator, an expander, and a second heater. The evaporator is modified so that the refrigerant vapor passage connecting to the low-pressure steam inlet of the ejector is changed to a refrigerant vapor passage connecting the evaporator to the low-pressure steam inlet of the ejector via the second regenerator. The second compressor is modified so that the refrigerant vapor passage connecting to the heater is changed to a refrigerant vapor passage connecting to the second heater, then splitting into two paths—the first path connecting to the heater and the second path connecting to the expander. The expander also has a refrigerant vapor passage connecting to the regenerator, then connecting to the second compressor via an intermediate port. The heater has a condensate line connecting to the evaporator via a throttling valve, modified so that the heater has a refrigerant medium line (either fully condensed or partially condensed) connecting to the evaporator via the regenerator, the second regenerator, and the throttling valve. The second heater also has a heated medium passage connecting to the outside. The expander connects to the second compressor and transmits power, forming a combined cycle heat pump system.

[0017] 10. A combined cycle heat pump system is formed by adding a two-phase expander to replace the throttle valve in any of the combined cycle heat pump systems described in items 1-9, wherein the two-phase expander is connected to a second compressor and transmits power to form a combined cycle heat pump system.

[0018] 11. A combined cycle heat pump system is formed by adding a nozzle and replacing the throttle valve to any of the combined cycle heat pump systems described in items 1-9 to form a combined cycle heat pump system.

[0019] 12. A combined cycle heat pump system is formed by adding a nozzle and replacing the throttle valve to any of the combined cycle heat pump systems described in items 8-9, adding a dual-energy compressor and replacing the second compressor, and adding an expander speed-up unit and replacing the expander.

[0020] 13. A combined cycle heat pump system is any one of the combined cycle heat pump systems described in items 1-4, with the addition of a nozzle and a steam distribution chamber. The heating unit is adjusted so that the condensate pipe is connected to the evaporator via a throttling valve, and the heating unit has a condensate pipe connected to the steam distribution chamber via a nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the second compressor through an intermediate port, and the steam distribution chamber also has a condensate pipe connected to the evaporator via a throttling valve, thus forming a combined cycle heat pump system.

[0021] 14. A combined cycle heat pump system, which is any of the combined cycle heat pump systems described in items 1-4, with the addition of a regenerator, a nozzle, and a steam distribution chamber. The refrigerant vapor passage of the evaporator connected to the low-pressure steam inlet of the ejector is adjusted so that the refrigerant vapor passage of the evaporator connects to the low-pressure steam inlet of the ejector after passing through the regenerator. The condensate pipeline of the heater connected to the evaporator through a throttling valve is adjusted so that the condensate pipeline of the heater connects to the steam distribution chamber through the nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the second compressor through an intermediate port. The steam distribution chamber also has a condensate pipeline connected to the evaporator through the regenerator and the throttling valve, thus forming a combined cycle heat pump system.

[0022] 15. A combined cycle heat pump system, which is formed by adding a second nozzle and replacing the throttle valve to any of the combined cycle heat pump systems described in items 13-14, to form a combined cycle heat pump system.

[0023] 16. A combined cycle heat pump system is formed by eliminating the high-temperature heater and the heated medium channel connected to the outside in any of the combined cycle heat pump systems described in items 1-15, and changing the gas channel that connects to the steam generator after the high-temperature heater to directly connect to the steam generator, thus forming a combined cycle heat pump system.

[0024] 17. A combined cycle heat pump system is any one of the combined cycle heat pump systems described in items 1-17, in which the high-temperature heat medium channel connecting the high-temperature heat exchanger to the outside is eliminated, a heating furnace is added and replaces the high-temperature heat exchanger, there is a fuel channel connecting the heating furnace to the outside, there is an air channel connecting the heating furnace to the heating furnace via a heat source regenerator, and the heating furnace also has a gas channel connecting the heating furnace to the outside via a heat source regenerator, thus forming a combined cycle heat pump system.

[0025] 18. A combined cycle heat pump system is any one of the combined cycle heat pump systems described in items 1-17, with the addition of a heating furnace and a heat source regenerator. An external fuel passage connects the heating furnace to the outside, and an external air passage connects the heating furnace to the heat source regenerator. The heating furnace also has a gas passage connects to the outside via the heat source regenerator. The high-temperature heat exchanger is modified so that it has a gas passage that connects to the high-temperature expander after passing through the heating furnace, thus forming a combined cycle heat pump system. Attached image description:

[0026] Figure 1 This is a first principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0027] Figure 2 This is a second principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0028] Figure 3This is a third principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0029] Figure 4 This is the fourth principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0030] Figure 5 This is the fifth principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0031] Figure 6 This is the sixth principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0032] Figure 7 This is the seventh principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0033] Figure 8 This is the eighth principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0034] Figure 9 This is the ninth principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0035] Figure 10 This is the tenth principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0036] Figure 11 This is the 11th principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0037] Figure 12 This is the 12th principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0038] Figure 13 This is the 13th principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0039] Figure 14 This is the 14th principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0040] Figure 15 This is the 15th principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0041] Figure 16 This is the 16th principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0042] Figure 17This is the 17th principle thermal system diagram of a combined cycle heat pump system provided by the present invention.

[0043] Figure 18 This is the 18th principle thermodynamic system diagram of a combined cycle heat pump system provided by the present invention.

[0044] In the diagram, 1-compressor, 2-high temperature heat exchanger, 3-high temperature expander, 4-high temperature heater, 5-steam generator, 6-second compressor, 7-heater, 8-boost pump, 9-throttle valve, 10-evaporator, 11-ejector, 12-high temperature regenerator, 13-regenerator, 14-second regenerator, 15-expander, 16-second heater, 17-two-phase expander, 18-nozzle, 19-dual-energy compressor, 20-expander speed increaser, 21-steam chamber, 22-second nozzle, A-heating furnace, B-heat source regenerator. Detailed implementation method:

[0045] First, it should be noted that the structure and process are not repeated unless necessary, and obvious processes are not described. The invention will now be described in detail with reference to the accompanying drawings and examples.

[0046] Figure 1 The combined cycle heat pump system shown is implemented as follows:

[0047] (1) Structurally, it mainly consists of a compressor, a high-temperature heat exchanger, a high-temperature expander, a high-temperature heater, a steam generator, a second compressor, a heater, a booster pump, a throttle valve, an evaporator, and an ejector; it has an external gas passage connected to compressor 1, compressor 1 has a gas passage connected to high-temperature expander 3 via high-temperature heat exchanger 2, high-temperature expander 3 also has a gas passage connected to high-temperature heater 4 and steam generator 5 before being connected to the outside, second compressor 6 has a refrigerant vapor passage connected to heater 7, heater 7 also has a condensate pipeline connected to steam generator 5 via booster pump 8, heater... 7. The condensate pipeline is connected to the evaporator 10 via the throttle valve 9. The steam generator 5 is also connected to the high-pressure steam inlet of the ejector 11 via a steam channel. The evaporator 10 is also connected to the low-pressure steam inlet of the ejector 11 via a refrigerant steam channel. The ejector 11 is also connected to the second compressor 6 via a medium-pressure refrigerant steam channel. The high-temperature heat exchanger 2 is also connected to the outside via a high-temperature heat medium channel. The high-temperature heater 4 and the heater 7 are also connected to the outside via heated medium channels. The evaporator 10 is also connected to the outside via a low-temperature heat medium channel. The high-temperature expander 3 is connected to the compressor 1 and the second compressor 6 and transmits power.

[0048] (2) In terms of process, external gas flows through compressor 1 to increase pressure and temperature, flows through high-temperature heat exchanger 2 to absorb heat and increase temperature, flows through high-temperature expander 3 to decrease pressure and do work, flows through high-temperature heater 4 and steam generator 5 to gradually release heat and decrease temperature, and is then discharged to the outside; the refrigerant vapor discharged by the second compressor 6 enters heater 7 to release heat and condense, and then splits into two paths - the first path flows through booster pump 8 to increase pressure and then enters steam generator 5 to absorb heat and vaporize, the second path flows through throttle valve 9 to decrease pressure and decrease temperature and then enters evaporator 10 to absorb heat and vaporize; the steam generated by steam generator 5 enters ejector 11 through high-pressure steam inlet, the high-pressure steam flows through nozzle to decrease pressure and increase speed and form low pressure, and the refrigerant vapor generated by evaporator 10 is drawn into the low-pressure zone of ejector 11. After the two steam streams are mixed, they flow through a diffuser to reduce speed and increase pressure to form medium-pressure refrigerant vapor, which then enters the second compressor 6 to increase pressure and temperature. The high-temperature heat medium provides driving heat load through the high-temperature heat exchanger 2, and the gas carries away the exhaust heat load through the inlet and outlet process. The low-temperature heat medium provides low-temperature heat load through the evaporator 10. The heated medium obtains medium-temperature heat load through the high-temperature heater 4 and heater 7 respectively. The mechanical energy output by the high-temperature expander 3 provides power to the compressor 1 and the second compressor 6, or the mechanical energy output by the high-temperature expander 3 provides power to the compressor 1, the second compressor 6 and the outside, or the high-temperature expander 3 and the outside jointly provide power to the compressor 1 and the second compressor 6, forming a combined cycle heat pump system.

[0049] Figure 2 The combined cycle heat pump system shown is implemented as follows:

[0050] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a high-temperature regenerator is added. The gas passage of compressor 1 is connected to high-temperature heat exchanger 2, and the gas passage of compressor 1 is connected to high-temperature heat exchanger 2 via high-temperature regenerator 12. The gas passage of high-temperature expander 3 is connected to high-temperature heater 4, and the gas passage of high-temperature expander 3 is connected to high-temperature heater 4 via high-temperature regenerator 12.

[0051] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that the compressed gas discharged from the compressor 1 flows through the high-temperature regenerator 12 to absorb heat and increase its temperature, and then enters the high-temperature heat exchanger 2 to absorb heat and increase its temperature; the gas discharged from the high-temperature expander flows through the high-temperature regenerator 12, the high-temperature heater 4 and the steam generator 5 to gradually release heat and decrease its temperature, and then is discharged to the outside, forming a combined cycle heat pump system.

[0052] Figure 3 The combined cycle heat pump system shown is implemented as follows:

[0053] (1) Structurally, in Figure 1In the combined cycle heat pump system shown, a high-temperature regenerator is added. The gas passage of compressor 1 is connected to high-temperature heat exchanger 2, and the gas passage of compressor 1 is connected to high-temperature heat exchanger 2 via high-temperature regenerator 12. The gas passage of high-temperature expander 3 is connected to high-temperature heater 4, and the gas passage of high-temperature expander 3 is connected to itself via high-temperature regenerator 12, and then high-temperature expander 3 has a gas passage connected to high-temperature heater 4.

[0054] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference lies in the following: the compressed gas discharged from the compressor 1 flows through the high-temperature regenerator 12 to absorb heat and increase its temperature, and then enters the high-temperature heat exchanger 2 to absorb heat and increase its temperature; the high-temperature gas discharged from the high-temperature heat exchanger 2 enters the high-temperature expander 3 to reduce its pressure and do work, and after reaching a certain level, it flows through the high-temperature regenerator 12 to release heat and decrease its temperature, enters the high-temperature expander 3 to continue to reduce its pressure and do work, flows through the high-temperature heater 4 and the steam generator 5 to release heat and decrease its temperature, and then is discharged to the outside, forming a combined cycle heat pump system.

[0055] Figure 4 The combined cycle heat pump system shown is implemented as follows:

[0056] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a high-temperature regenerator is added. The gas passage of compressor 1 is connected to high-temperature heat exchanger 2, and then compressor 1 is connected to itself via high-temperature regenerator 12. The gas passage of high-temperature expander 3 is connected to high-temperature heater 4, and then compressor 1 is connected to high-temperature heater 4 via high-temperature regenerator 12.

[0057] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that: external gas enters the compressor 1 and is pressurized and heated. After reaching a certain level, it flows through the high-temperature regenerator 12 to absorb heat and be heated. It then enters the compressor 1 again to continue to pressurize and heat up, and then enters the high-temperature heat exchanger 2 to absorb heat and be heated. The gas discharged from the high-temperature expander 3 flows through the high-temperature regenerator 12, the high-temperature heater 4 and the steam generator 5 to gradually release heat and cool down, and then is discharged to the outside, forming a combined cycle heat pump system.

[0058] Figure 5 The combined cycle heat pump system shown is implemented as follows:

[0059] (1) Structurally, in Figure 1In the combined cycle heat pump system shown, a regenerator 13 is added, and the condensate pipe of the heater 7 is connected to the evaporator 10 through the throttle valve 9. The system is adjusted so that the condensate pipe of the heater 7 is connected to the evaporator 10 through the regenerator 13 and the throttle valve 9. The refrigerant vapor passage of the ejector 11 is connected to the second compressor 6. The system is adjusted so that the refrigerant vapor passage of the ejector 11 is connected to the second compressor 6 through the regenerator 13.

[0060] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that the condensate discharged from the heater 7 flows through the regenerator 13 to release heat and cool down, flows through the throttling valve 9 to reduce pressure and temperature, and then enters the evaporator 10 to absorb heat and vaporize; the refrigerant vapor discharged from the ejector 11 flows through the regenerator 13 to absorb heat and increase temperature, and then enters the second compressor 6 to increase pressure and temperature, forming a combined cycle heat pump system.

[0061] Figure 6 The combined cycle heat pump system shown is implemented as follows:

[0062] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a regenerator 13 is added. The condensate pipe of the heater 7 is connected to the evaporator 10 through the throttling valve 9. The condensate pipe of the heater 7 is connected to the evaporator 10 through the regenerator 13 and the throttling valve 9. The refrigerant vapor passage of the evaporator 10 is connected to the low-pressure steam inlet of the ejector 11. The refrigerant vapor passage of the evaporator 10 is connected to the low-pressure steam inlet of the ejector 11 after passing through the regenerator 13.

[0063] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that the condensate discharged from the heater 7 flows through the regenerator 13 to release heat and cool down, flows through the throttling valve 9 to reduce pressure and cool down, flows through the evaporator 10 to absorb heat and vaporize, flows through the regenerator 13 to absorb heat and increase temperature, and then enters the low-pressure zone of the ejector 11 to form a combined cycle heat pump system.

[0064] Figure 7 The combined cycle heat pump system shown is implemented as follows:

[0065] (1) Structurally, in Figure 1In the combined cycle heat pump system shown, a regenerator and a second regenerator are added. The condensate pipe of the heater 7 is connected to the evaporator 10 via the throttle valve 9. The condensate pipe of the heater 7 is then connected to the evaporator 10 via the regenerator 13, the second regenerator 14 and the throttle valve 9. The refrigerant vapor passage of the evaporator 10 is connected to the low-pressure steam inlet of the ejector 11. The refrigerant vapor passage of the evaporator 10 is then connected to the low-pressure steam inlet of the ejector 11 via the second regenerator 14. The refrigerant vapor passage of the ejector 11 is then connected to the second compressor 6 via the regenerator 13.

[0066] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference lies in the following: the condensate discharged from the heater 7 flows through the regenerator 13 and the second regenerator 14 to gradually release heat and cool down, flows through the throttling valve 9 to reduce pressure and temperature, flows through the evaporator 10 to absorb heat and vaporize, flows through the second regenerator 14 to absorb heat and increase temperature, and then enters the low-pressure zone of the ejector 11; the refrigerant vapor discharged from the ejector 11 flows through the regenerator 13 to absorb heat and increase temperature, and then enters the second compressor 6 to increase pressure and temperature, forming a combined cycle heat pump system.

[0067] Figure 8 The combined cycle heat pump system shown is implemented as follows:

[0068] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a regenerator, an expander, and a second heater are added. The second compressor 6 is connected to the heater 7 via a refrigerant vapor channel. The refrigerant vapor channel of the second compressor 6 is then connected to the second heater 16, and then splits into two paths—the first path connects to the heater 7 and the second path connects to the expander 15. The expander 15 also has a refrigerant vapor channel connected to the regenerator 13, and then connected to the second compressor 6 through an intermediate port. The heater 7 has a condensate line connected to the evaporator 10 via a throttling valve 9. The refrigerant medium line of the heater 7, whether fully condensed or not fully condensed, is connected to the evaporator 10 via the regenerator 13 and the throttling valve 9. The second heater 16 also has a heated medium channel connected to the outside. The expander 15 is connected to the second compressor 6 and transmits power.

[0069] (2) In terms of process, with Figure 1Compared to the combined cycle heat pump system shown, the difference lies in the following: the refrigerant vapor discharged from the second compressor 6 flows through the second heater 16 to release heat and cool down, and then splits into two paths—the first path enters the heater 7 to release heat and then condenses completely or partially; the second path flows through the expander 15 to reduce pressure and do work, flows through the regenerator 13 to absorb heat and heat up, and enters the second compressor 6 through the intermediate air inlet port to increase pressure and temperature; the refrigerant medium discharged from the heater 7 is split into two paths—the first path flows through the booster pump 8 to be pressurized and then enters the steam generator 5 to absorb heat and vaporize; the second path flows through the regenerator 13 to release heat, flows through the throttling valve 9 to reduce pressure and temperature, and then enters the evaporator 10 to absorb heat and vaporize; the heated medium obtains a medium-temperature heat load through the second heater 16, and the mechanical energy output from the expander 15 provides power to the second compressor 6, forming a combined cycle heat pump system.

[0070] Figure 9 The combined cycle heat pump system shown is implemented as follows:

[0071] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a regenerator, a second regenerator, an expander, and a second heater are added. The evaporator 10 is connected to the low-pressure steam inlet of the ejector 11 via a refrigerant vapor channel. The refrigerant vapor channel of the evaporator 10 is then connected to the low-pressure steam inlet of the ejector 11 via the second regenerator 14. The second compressor 6 is connected to the heater 7 via a refrigerant vapor channel. The refrigerant vapor channel of the second compressor 6 is then connected to the second heater 16 and splits into two paths—the first path connects to the heater 7 and the second path connects to the expander 15. The expander 15 also has a refrigerant vapor channel connected to the regenerator 13 and then connected to the second compressor 6 via an intermediate port. The heater 7 has a condensate line connected to the evaporator 10 via a throttle valve 9. The refrigerant medium line of the heater 7, whether fully condensed or partially condensed, is connected to the evaporator 10 via the regenerator 13, the second regenerator 14, and the throttle valve 9. The second heater 16 also has a heated medium channel connected to the outside. The expander 15 is connected to the second compressor 6 and transmits power.

[0072] (2) In terms of process, with Figure 1Compared to the combined cycle heat pump system shown, the difference lies in the following: the refrigerant vapor discharged from the second compressor 6 flows through the second heater 16 to release heat and cool down, and then splits into two paths—the first path enters the heater 7 to release heat and then condenses completely or partially; the second path flows through the expander 15 to reduce pressure and do work, flows through the regenerator 13 to absorb heat and heat up, and enters the second compressor 6 through the intermediate air inlet port to increase pressure and temperature; the refrigerant medium discharged from the heater 7 is split into two paths—the first path flows through the booster pump 8 to increase pressure and then enters the steam generator 5 to absorb heat and vaporize; the second path flows through the regenerator 13 and the second regenerator 14 and gradually releases heat, flows through the throttling valve 9 to reduce pressure and cool down, flows through the evaporator 10 to absorb heat and vaporize, flows through the second regenerator 14 to absorb heat and heat up, and then enters the low-pressure zone of the ejector 11; the heated medium obtains a medium-temperature heat load through the second heater 16, and the mechanical energy output by the expander 15 provides power to the second compressor 6, forming a combined cycle heat pump system.

[0073] Figure 10 The combined cycle heat pump system shown is implemented as follows:

[0074] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a two-phase expander 17 is added and replaces the throttle valve 9. The two-phase expander 17 is connected to the second compressor 6 and transmits power.

[0075] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that the condensate discharged from the heater 7 flows through the two-phase expander 17 to reduce pressure and do work, and then enters the evaporator 10 to absorb heat and vaporize; the mechanical energy output by the two-phase expander 17 is provided to the second compressor 6 to provide power, forming a combined cycle heat pump system.

[0076] Figure 11 The combined cycle heat pump system shown is implemented as follows:

[0077] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a nozzle 18 is added and the throttle valve 9 is replaced.

[0078] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that the condensate discharged from the heater 7 flows through the nozzle 18 to reduce pressure and increase speed, and then enters the evaporator 10 to absorb heat and vaporize, forming a combined cycle heat pump system.

[0079] Figure 12 The combined cycle heat pump system shown is implemented as follows:

[0080] (1) Structurally, in Figure 9In the combined cycle heat pump system shown, a nozzle 18 is added and replaces the throttle valve 9, a dual-energy compressor 19 is added and replaces the second compressor 6, and an expander accelerator 20 is added and replaces the expander 15.

[0081] (2) In terms of process, with Figure 9 Compared to the combined cycle heat pump system shown, the difference lies in the following: the condensate discharged from the second regenerator 14 flows through the nozzle 18 to reduce pressure and increase speed, flows through the evaporator 10 to absorb heat and vaporize, flows through the second regenerator 14 to absorb heat and increase temperature, and then enters the low-pressure zone of the ejector 11; the refrigerant vapor discharged from the second heater 16 is divided into two paths - the first path enters the heater 7, and the second path enters the expander accelerator 20 to reduce pressure and do work and increase speed, flows through the regenerator 13 to absorb heat and increase temperature, and enters the dual-energy compressor 19 to increase pressure and temperature and reduce speed, thus forming a combined cycle heat pump system.

[0082] Figure 13 The combined cycle heat pump system shown is implemented as follows:

[0083] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a nozzle and a steam distribution chamber are added. The condensate pipe of the heater 7 is connected to the evaporator 10 through the throttling valve 9. The heater 7 is then connected to the steam distribution chamber 21 through the nozzle 18. The steam distribution chamber 21 also has a refrigerant vapor passage connected to the second compressor 6 through an intermediate port. The steam distribution chamber 21 also has a condensate pipe connected to the evaporator 10 through the throttling valve 9.

[0084] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that: the condensate discharged from the heater 7 flows through the nozzle 18 to reduce pressure and increase speed, and then enters the steam separator 21 for gas-liquid separation; the refrigerant vapor discharged from the steam separator 21 enters the second compressor 6 through the intermediate port to increase pressure and temperature, and the condensate discharged from the steam separator 21 flows through the throttle valve 9 to reduce pressure and temperature before entering the evaporator 10 to absorb heat and vaporize, thus forming a combined cycle heat pump system.

[0085] Figure 14 The combined cycle heat pump system shown is implemented as follows:

[0086] (1) Structurally, in Figure 1In the combined cycle heat pump system shown, a regenerator, a nozzle, and a steam distribution chamber are added. The refrigerant vapor passage of the evaporator 10 is connected to the low-pressure steam inlet of the ejector 11. The refrigerant vapor passage of the evaporator 10 is then connected to the low-pressure steam inlet of the ejector 11 via the regenerator 13. The condensate pipeline of the heater 7 is connected to the evaporator 10 via the throttle valve 9. The condensate pipeline of the heater 7 is then connected to the steam distribution chamber 21 via the nozzle 18. The steam distribution chamber 21 also has a refrigerant vapor passage connected to the second compressor 6 through an intermediate port. The condensate pipeline of the steam distribution chamber 21 is also connected to the evaporator 10 via the regenerator 13 and the throttle valve 9.

[0087] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference lies in the following: the condensate discharged from the heater 7 flows through the nozzle 18 to reduce pressure and increase speed, and then enters the steam separator 21 for gas-liquid separation; the refrigerant vapor discharged from the steam separator 21 enters the second compressor 6 through the intermediate port to increase pressure and temperature; the condensate discharged from the steam separator 21 flows through the regenerator 13 to release heat and reduce temperature, flows through the throttling valve 9 to reduce pressure and reduce temperature, flows through the evaporator 10 to absorb heat and vaporize, flows through the regenerator 13 to absorb heat and increase temperature, and then enters the low-pressure zone of the ejector 11 to form a combined cycle heat pump system.

[0088] Figure 15 The combined cycle heat pump system shown is implemented as follows:

[0089] (1) Structurally, in Figure 13 In the combined cycle heat pump system shown, a second nozzle 22 is added and replaces the throttle valve 9.

[0090] (2) In terms of process, with Figure 13 Compared to the combined cycle heat pump system shown, the difference is that the condensate discharged from the steam distribution chamber 21 flows through the second nozzle 22 to reduce pressure and increase speed, and then enters the evaporator 10 to absorb heat and vaporize, forming a combined cycle heat pump system.

[0091] Figure 16 The combined cycle heat pump system shown is implemented as follows:

[0092] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, the high-temperature heater 4 and its heated medium channel connected to the outside are eliminated, and the gas channel that connects to the steam generator 5 after the high-temperature heater 4 is changed to directly connect to the steam generator 5.

[0093] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference is that the gas emitted by the high-temperature expander 3 flows through the steam generator 5 to release heat and cool down before being discharged to the outside, forming a combined cycle heat pump system.

[0094] Figure 17The combined cycle heat pump system shown is implemented as follows:

[0095] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, the high-temperature heat medium channel connecting the high-temperature heat exchanger 2 to the outside is removed, and a heater A is added to replace the high-temperature heat exchanger 2. There is a fuel channel connecting the heater A to the outside, and an air channel connecting the heater A to the heater A via the heat source regenerator B. The heater A also has a gas channel connecting to the outside via the heat source regenerator B.

[0096] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference lies in the following: external fuel enters the heating furnace A, and external air flows through the heat source regenerator B to absorb heat and increase its temperature before entering the heating furnace A. The fuel and air mix and burn in the heating furnace A to form fuel gas. The fuel gas generated in the heating furnace A releases heat to the compressed gas flowing through it, and then flows through the heat source regenerator B to release heat and decrease its temperature before being discharged to the outside. The gas discharged by the compressor 1 flows through the heating furnace A to absorb heat and increase its temperature, and then enters the high-temperature expander 3 to reduce its pressure and do work. The external fuel provides a high-temperature driving heat load through the heating furnace A, and the air and fuel gas carry away the discharged heat load by entering and exiting the heating furnace A, forming a combined cycle heat pump system.

[0097] Figure 18 The combined cycle heat pump system shown is implemented as follows:

[0098] (1) Structurally, in Figure 1 In the combined cycle heat pump system shown, a heating furnace and a heat source regenerator are added. There is an external fuel channel connected to the heating furnace A, and an external air channel connected to the heating furnace A via the heat source regenerator B. The heating furnace A also has a gas channel connected to the outside via the heat source regenerator B. The high-temperature heat exchanger 2, which has a gas channel connected to the high-temperature expander 3, is adjusted so that the high-temperature heat exchanger 2 has a gas channel connected to the high-temperature expander 3 after passing through the heating furnace A.

[0099] (2) In terms of process, with Figure 1 Compared to the combined cycle heat pump system shown, the difference lies in the following: external fuel enters the heating furnace A, and external air flows through the heat source regenerator B to absorb heat and increase its temperature before entering the heating furnace A. The fuel and air mix and burn in the heating furnace A to form fuel gas. The fuel gas generated in the heating furnace A releases heat to the gas flowing through it, and then flows through the heat source regenerator B to release heat and decrease its temperature before being discharged to the outside. The gas discharged from the compressor 1 flows through the high-temperature heat exchanger 2 and the heating furnace A to gradually absorb heat and increase its temperature, and then enters the high-temperature expander 3 to reduce its pressure and perform work. External fuel provides high-temperature driving heat load through the heating furnace A, and air and fuel gas carry away the discharged heat load by entering and exiting the heating furnace A, forming a combined cycle heat pump system.

[0100] The effects achievable by this invention—the combined cycle heat pump system proposed in this invention has the following effects and advantages:

[0101] (1) New ideas and technologies for utilizing temperature difference are presented.

[0102] (2) High-grade heat sources formed by high-temperature heat resources or fuels are utilized step by step to significantly improve energy utilization efficiency.

[0103] (3) New technologies for the efficient and high-value utilization of high-grade energy in refrigeration / heating / steam / power production and combined cooling / heating / steam / power supply are presented.

[0104] (4) Energy sharing to enhance the efficient and high-value utilization of different energy types.

[0105] (5) When necessary, external power can be used to raise the temperature of thermal energy, which is flexible and adaptable.

[0106] (6) The compressor and the ejector jointly obtain the low temperature heat load, which is beneficial to improve the heating parameters or reduce the compressor's pressure boosting share.

[0107] (7) Provide reasonable regeneration technology to effectively improve the coordination of the device in terms of load, performance index, and pressure ratio.

[0108] (8) The injector enables efficient utilization of gas emission heat load and temperature increase of low temperature heat load, thereby reducing the size of the compressor and effectively reducing the manufacturing cost of the device.

[0109] (9) The process is reasonable, the structure is simple, the manufacturing cost is low, and the system economy is effectively improved.

[0110] (10) Provides a variety of specific technical solutions that can cope with many different actual situations, which is conducive to expanding the application scope and value of combined cycle heat pump system technology.

Claims

1. A combined cycle heat pump system mainly consists of a compressor, a high-temperature heat exchanger, a high-temperature expander, a high-temperature heater, a steam generator, a second compressor, a heater, a booster pump, a throttle valve, an evaporator, and an ejector. It has an external gas passage connecting to the compressor (1), a gas passage connecting the compressor (1) to the high-temperature expander (3) via the high-temperature heat exchanger (2), a gas passage connecting the high-temperature expander (3) to the high-temperature heater (4) and the steam generator (5) before connecting to the outside, a refrigerant vapor passage connecting the second compressor (6) to the heater (7), a condensate pipeline connecting the heater (7) to the steam generator (5) via the booster pump (8), and a condensate... The pipeline is connected to the evaporator (10) via the throttle valve (9). The steam generator (5) also has a steam channel connected to the high-pressure steam inlet of the ejector (11). The evaporator (10) also has a refrigerant steam channel connected to the low-pressure steam inlet of the ejector (11). The ejector (11) also has a medium-pressure refrigerant steam channel connected to the second compressor (6). The high-temperature heat exchanger (2) also has a high-temperature heat medium channel connected to the outside. The high-temperature heater (4) and the heater (7) also have heated medium channels connected to the outside. The evaporator (10) also has a low-temperature heat medium channel connected to the outside. The high-temperature expander (3) is connected to the compressor (1) and the second compressor (6) and transmits power to form a combined cycle heat pump system.

2. A combined cycle heat pump system is a combined cycle heat pump system as described in claim 1, wherein a high-temperature regenerator is added, the gas passage of the compressor (1) is connected to the high-temperature heat exchanger (2) and the gas passage of the compressor (1) is connected to the high-temperature heat exchanger (2) via the high-temperature regenerator (12), and the gas passage of the high-temperature expander (3) is connected to the high-temperature heater (4) and the gas passage of the high-temperature expander (3) is connected to the high-temperature heater (4) via the high-temperature regenerator (12), thus forming a combined cycle heat pump system.

3. A combined cycle heat pump system is a combined cycle heat pump system as described in claim 1, wherein a high-temperature regenerator is added, the compressor (1) is connected to the high-temperature heat exchanger (2) via a gas channel, and the high-temperature expander (3) is connected to the high-temperature heater (4) via a gas channel, and the high-temperature expander (3) is connected to the high-temperature heater (4) via a gas channel, and then the high-temperature expander (3) is connected to itself via the high-temperature regenerator (12), and then the high-temperature expander (3) is connected to the high-temperature heater (4) via a gas channel, thus forming a combined cycle heat pump system.

4. A combined cycle heat pump system is a combined cycle heat pump system as described in claim 1, wherein a high-temperature regenerator is added, and the gas passage of the compressor (1) is connected to the high-temperature heat exchanger (2) is adjusted so that the compressor (1) has a gas passage connected to itself through the high-temperature regenerator (12), and then the compressor (1) has a gas passage connected to the high-temperature heat exchanger (2). The gas passage of the high-temperature expander (3) is connected to the high-temperature heater (4) is adjusted so that the high-temperature expander (3) has a gas passage connected to the high-temperature heater (4) through the high-temperature regenerator (12), thus forming a combined cycle heat pump system.

5. A combined cycle heat pump system is formed by adding a regenerator (13) to any of the combined cycle heat pump systems described in claims 1-4, adjusting the connection between the condensate pipe of the heater (7) and the evaporator (10) via the throttle valve (9) to the connection between the heater (7) and the evaporator (10) via the regenerator (13) and the throttle valve (9), and adjusting the connection between the refrigerant vapor passage of the ejector (11) and the second compressor (6) to the connection between the ejector (11) and the second compressor (6) via the regenerator (13), thereby forming a combined cycle heat pump system.

6. A combined cycle heat pump system is formed by adding a regenerator (13) to any of the combined cycle heat pump systems described in claims 1-4, adjusting the connection between the condensate pipe of the heater (7) and the evaporator (10) via the throttle valve (9) to the connection between the condensate pipe of the heater (7) and the evaporator (10) via the regenerator (13) and the throttle valve (9), and adjusting the connection between the refrigerant vapor passage of the evaporator (10) and the low-pressure steam inlet of the ejector (11) to the connection between the refrigerant vapor passage of the evaporator (10) and the low-pressure steam inlet of the ejector (11) via the regenerator (13), thereby forming a combined cycle heat pump system.

7. A combined cycle heat pump system is formed by adding a regenerator and a second regenerator to any of the combined cycle heat pump systems described in claims 1-4. The condensate pipe of the heater (7) is connected to the evaporator (10) through the throttle valve (9) and is adjusted so that the condensate pipe of the heater (7) is connected to the evaporator (10) through the regenerator (13), the second regenerator (14) and the throttle valve (9). The refrigerant vapor passage of the evaporator (10) is connected to the low-pressure steam inlet of the ejector (11) and is adjusted so that the refrigerant vapor passage of the evaporator (10) is connected to the low-pressure steam inlet of the ejector (11) after passing through the second regenerator (14). The refrigerant vapor passage of the ejector (11) is connected to the second compressor (6) and is adjusted so that the refrigerant vapor passage of the ejector (11) is connected to the second compressor (6) through the regenerator (13), thus forming a combined cycle heat pump system.

8. A combined cycle heat pump system is a combined cycle heat pump system according to any one of claims 1-4, with the addition of a regenerator, an expander, and a second heater. The second compressor (6) is connected to the heater (7) via a refrigerant vapor channel. The refrigerant vapor channel of the second compressor (6) is then connected to the second heater (16) and then split into two paths—the first path connects to the heater (7) and the second path connects to the expander (15). The expander (15) also has a refrigerant vapor channel connected to the regenerator (13) and then connected to the second compressor (6) through an intermediate port. The condensate pipeline of the heater (7) is connected to the evaporator (10) via a throttle valve (9). The refrigerant medium pipeline of the heater (7) is connected to the evaporator (10) via the regenerator (13) and the throttle valve (9). The second heater (16) also has a heated medium channel connected to the outside. The expander (15) is connected to the second compressor (6) and transmits power, forming a combined cycle heat pump system.

9. A combined cycle heat pump system, comprising, in any one of the combined cycle heat pump systems described in claims 1-4, an additional regenerator, a second regenerator, an expander, and a second heater; wherein the refrigerant vapor passage of the evaporator (10) is connected to the low-pressure steam inlet of the ejector (11), and the refrigerant vapor passage of the evaporator (10) is connected to the low-pressure steam inlet of the ejector (11) via the second regenerator (14); and the refrigerant vapor passage of the second compressor (6) is connected to the heater (7), and the refrigerant vapor passage of the second compressor (6) is connected to the second heater (16), and then split into two paths—the first path connecting the heater (7) and the second compressor (6) connecting to the second heater (16). The second circuit connects to the expander (15), which also has a refrigerant vapor channel that connects to the regenerator (13) and then to the second compressor (6) through the intermediate port. The condensate pipeline of the heater (7) is connected to the evaporator (10) through the throttle valve (9), and the heater (7) has a refrigerant medium pipeline that is either fully condensed or not fully condensed, which is connected to the evaporator (10) through the regenerator (13), the second regenerator (14) and the throttle valve (9). The second heater (16) also has a heated medium channel that is connected to the outside. The expander (15) is connected to the second compressor (6) and transmits power to form a combined cycle heat pump system.

10. A combined cycle heat pump system is formed by adding a two-phase expander (17) to replace the throttle valve (9) in any of the combined cycle heat pump systems described in claims 1-9. The two-phase expander (17) is connected to a second compressor (6) and transmits power to form a combined cycle heat pump system.

11. A combined cycle heat pump system is formed by adding a nozzle (18) and replacing the throttle valve (9) to any of the combined cycle heat pump systems described in claims 1-9 to form a combined cycle heat pump system.

12. A combined cycle heat pump system is formed by adding a nozzle (18) to replace the throttle valve (9), adding a dual-energy compressor (19) to replace the second compressor (6), and adding an expander speed-up unit (20) to replace the expander (15) in any of the combined cycle heat pump systems described in claims 8-9.

13. A combined cycle heat pump system is a combined cycle heat pump system according to any one of claims 1-4, with the addition of a nozzle and a steam distribution chamber. The condensate pipe of the heater (7) is connected to the evaporator (10) through a throttle valve (9), and the condensate pipe of the heater (7) is connected to the steam distribution chamber (21) through a nozzle (18). The steam distribution chamber (21) also has a refrigerant vapor passage connected to the second compressor (6) through an intermediate port. The steam distribution chamber (21) also has a condensate pipe connected to the evaporator (10) through a throttle valve (9), thus forming a combined cycle heat pump system.

14. A combined cycle heat pump system is a combined cycle heat pump system according to any one of claims 1-4, with the addition of a regenerator, a nozzle, and a steam distribution chamber. The evaporator (10) is connected to the low-pressure steam inlet of the ejector (11) via a refrigerant vapor channel, and the refrigerant vapor channel of the evaporator (10) is connected to the low-pressure steam inlet of the ejector (11) via the regenerator (13). The heater (7) is connected to the evaporator (10) via a condensate pipe via a throttle valve (9), and the heater (7) is connected to the steam distribution chamber (21) via a nozzle (18). The steam distribution chamber (21) also has a refrigerant vapor channel connected to the second compressor (6) via an intermediate port. The steam distribution chamber (21) also has a condensate pipe connected to the evaporator (10) via the regenerator (13) and the throttle valve (9), thus forming a combined cycle heat pump system.

15. A combined cycle heat pump system is formed by adding a second nozzle (22) and replacing the throttle valve (9) to any of the combined cycle heat pump systems described in claims 13-14 to form a combined cycle heat pump system.

16. A combined cycle heat pump system is formed by eliminating the high-temperature heater (4) and its heated medium channel connected to the outside in any of the combined cycle heat pump systems described in claims 1-15, and changing the gas channel that connects to the steam generator (5) after the high-temperature heater (4) to directly connect to the steam generator (5), thereby forming a combined cycle heat pump system.

17. A combined cycle heat pump system is a combined cycle heat pump system according to any one of claims 1-17, wherein the high-temperature heat medium channel connecting the high-temperature heat exchanger (2) to the outside is eliminated, a heating furnace (A) is added and replaces the high-temperature heat exchanger (2), there is a fuel channel connecting the heating furnace (A) to the outside, there is an air channel connecting the heating furnace (A) to the heat source regenerator (B) to the outside, and the heating furnace (A) also has a gas channel connecting the heating furnace (A) to the outside through the heat source regenerator (B), thus forming a combined cycle heat pump system.

18. A combined cycle heat pump system is a combined cycle heat pump system according to any one of claims 1-17, with the addition of a heating furnace and a heat source regenerator. An external fuel channel is connected to the heating furnace (A), and an external air channel is connected to the heating furnace (A) via the heat source regenerator (B). The heating furnace (A) also has a gas channel connected to the outside via the heat source regenerator (B). The high-temperature heat exchanger (2) is adjusted so that the high-temperature heat exchanger (2) has a gas channel connected to the high-temperature expander (3) after passing through the heating furnace (A), thus forming a combined cycle heat pump system.

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