Internal combustion engine combined cycle heat pump system

Abstract

This invention provides an internal combustion engine-based combined cycle heat pump system, belonging to the field of heat pump technology. The system includes an external air passage connected to the internal combustion engine, an external fuel passage connected to the internal combustion engine, a gas passage connecting the internal combustion engine to a steam generator and then to the outside, a cooling medium passage connecting the internal combustion engine to the outside, a refrigerant vapor passage connecting the compressor to the heater, a condensate line connecting the heater to the evaporator via a throttling valve, a refrigerant vapor passage connecting the evaporator to the compressor, an external liquid medium line connecting the external liquid medium line to the steam generator via a booster pump, a working steam passage connecting the high-pressure steam inlet of the ejector, a heated medium passage connecting the external liquid medium to the heater and then to the low-pressure steam inlet of the ejector, a user steam passage connecting the ejector to the outside, and a low-temperature heat medium passage connecting the evaporator to the outside. The internal combustion engine connects to the compressor and transmits power, forming an internal combustion engine-based combined cycle heat pump system.

Description

Technical fields:

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

[0002] People need cold / heat / steam / power in their lives and production processes. 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, the operating parameters, performance index, manufacturing cost, adaptability and utilization level of heat resources of heat pumps need to be comprehensively considered.

[0003] High-quality fuels, typically represented by natural gas, gasoline, and diesel, are high-temperature heat sources with temperatures exceeding several thousand degrees Celsius. Achieving efficient and high-value utilization of these fuels in refrigeration, heating, steam production, and power generation presents a significant 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 principle of simple and efficient use of high-quality fuels for refrigeration / heating / steam production / power, this invention presents a combined cycle heat pump system for internal combustion engines that integrates technologies, has a reasonable process, a simple structure, 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 for internal combustion engines. The specific contents of the invention are described in detail below:

[0008] 1. An internal combustion engine-type combined cycle heat pump system mainly consists of an internal combustion engine, a steam generator, a booster pump, an injector, a compressor, a heater, a throttle valve, and an evaporator. Externally, it has an air passage connecting to the internal combustion engine, an external fuel passage connecting to the internal combustion engine, a gas passage connecting the internal combustion engine to the steam generator, and a cooling medium passage connecting to the outside. The compressor has a refrigerant vapor passage connecting to the heater, the heater has a condensate line connecting to the evaporator via a throttle valve, the evaporator has a refrigerant vapor passage connecting to the compressor, an external liquid medium line connecting to the steam generator via the booster pump, the steam generator has a working steam passage connecting to the high-pressure steam inlet of the injector, an external heated medium passage connecting to the heater and then to the low-pressure steam inlet of the injector, the injector has a user steam passage connecting to the outside, and the evaporator has a low-temperature heat medium passage connecting to the outside. The internal combustion engine connects to the compressor and transmits power, forming an internal combustion engine-type combined cycle heat pump system.

[0009] 2. An internal combustion engine-type combined cycle heat pump system is an internal combustion engine-type combined cycle heat pump system described in item 1, with the addition of a regenerator. The evaporator is modified so that the refrigerant vapor passage is connected to the compressor via the regenerator, and the condensate line of the heater is connected to the evaporator via a throttling valve. The condensate line of the heater is modified so that the condensate line is connected to the evaporator via the regenerator and the throttling valve, thus forming an internal combustion engine-type combined cycle heat pump system.

[0010] 3. The internal combustion engine-type combined cycle heat pump system is an improvement upon the first internal combustion engine-type combined cycle heat pump system, by adding a regenerator, an expander, and a second heater. The compressor's refrigerant vapor passage, previously connected to the heater, is now connected to the second heater, 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 passage connecting to the regenerator, and then to the compressor via an intermediate port. The heater's condensate line, connected to the evaporator via a throttling valve, is now connected to the evaporator via a refrigerant medium line that is either fully condensed or partially condensed, connected to the evaporator via the regenerator and the throttling valve. The second heater also has a heated medium passage connected to the outside. The expander connects to the compressor and transmits power, thus forming the internal combustion engine-type combined cycle heat pump system.

[0011] 4. The internal combustion engine-type combined cycle heat pump system is an improvement upon the first internal combustion engine-type combined cycle heat pump system, by adding a regenerator, an expander, a second heater, and a second regenerator. The evaporator, which previously had a refrigerant vapor passage connecting to the compressor, is now connected via the second regenerator to the compressor. Similarly, the compressor, which previously had a refrigerant vapor passage connecting to the heater, is now connected via the second 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 passage connecting to the regenerator and then to the compressor via an intermediate port. The heater has a condensate line connected to the evaporator via a throttling valve, and this is now connected to the evaporator via a line containing either fully condensed or partially condensed refrigerant medium, which then connects to the evaporator via the regenerator, the second regenerator, and the throttling valve. The second heater also has a heated medium passage connected to the outside. The expander connects to the compressor and transmits power, thus forming the internal combustion engine-type combined cycle heat pump system.

[0012] 5. An internal combustion engine type combined cycle heat pump system is formed by adding a two-phase expander to replace the throttle valve in any of the internal combustion engine type combined cycle heat pump systems described in items 1-4. The two-phase expander is connected to the compressor and transmits power to form an internal combustion engine type combined cycle heat pump system.

[0013] 6. An internal combustion engine type combined cycle heat pump system is formed by adding a nozzle and replacing the throttle valve to any of the internal combustion engine type combined cycle heat pump systems described in items 1-4, and adding a dual-energy compressor and replacing the compressor.

[0014] 7. An internal combustion engine type combined cycle heat pump system is formed by adding a nozzle and replacing the throttle valve to any of the internal combustion engine type combined cycle heat pump systems described in items 3-4, adding a dual-energy compressor and replacing the compressor, and adding an expander speed increaser and replacing the expander.

[0015] 8. An internal combustion engine-type combined cycle heat pump system is an internal combustion engine-type combined cycle heat pump system described in item 1, with the addition of a nozzle and a steam distribution chamber. The heating unit is changed from having a condensate line connected to the evaporator via a throttling valve to having a condensate line connected to the steam distribution chamber via a nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the compressor through an intermediate port. The steam distribution chamber also has a condensate line connected to the evaporator after passing through a throttling valve, thus forming an internal combustion engine-type combined cycle heat pump system.

[0016] 9. An internal combustion engine-type combined cycle heat pump system is an internal combustion engine-type combined cycle heat pump system described in item 1, with the addition of a regenerator, a nozzle, and a steam distribution chamber. The evaporator is modified from having a refrigerant vapor passage connected to the compressor to having a refrigerant vapor passage connected to the compressor via the regenerator. The heater is modified from having a condensate line connected to the evaporator via a throttling valve to having a condensate line connected to the steam distribution chamber via a nozzle. The steam distribution chamber also has a refrigerant vapor passage connected to the compressor via an intermediate port. The steam distribution chamber also has a condensate line connected to the evaporator via the regenerator and the throttling valve, thus forming an internal combustion engine-type combined cycle heat pump system.

[0017] 10. An internal combustion engine type combined cycle heat pump system is formed by adding a second nozzle and replacing the throttle valve to the internal combustion engine type combined cycle heat pump system described in item 8 or 9, and adding a dual-energy compressor and replacing the compressor.

[0018] 11. An internal combustion engine type combined cycle heat pump system is any one of the internal combustion engine type combined cycle heat pump systems described in items 1-10, with the addition of a new heater. The internal combustion engine is changed from having a gas passage connected to the steam generator and then connected to the outside to having a gas passage connected to the steam generator and the new heater and then connected to the outside. The new heater also has a heated medium passage connected to the outside, thus forming an internal combustion engine type combined cycle heat pump system.

[0019] 12. An internal combustion engine-type combined cycle heat pump system is any one of the internal combustion engine-type combined cycle heat pump systems described in items 1-11, with the addition of an air compressor and a high-temperature regenerator. The external air passage connecting to the internal combustion engine is adjusted to connect the external air passage to the internal combustion engine via the air compressor and the high-temperature regenerator. The internal combustion engine's gas passage connecting to the steam generator is adjusted to connect the internal combustion engine to the high-temperature regenerator and then to the steam generator. The internal combustion engine is connected to the air compressor and transmits power, thus forming an internal combustion engine-type combined cycle heat pump system. Attached image description:

[0020] Figure 1 This is a first principle thermal system diagram of an internal combustion engine-type combined cycle heat pump system provided by the present invention.

[0021] Figure 2 This is a second principle thermal system diagram of an internal combustion engine-type combined cycle heat pump system provided by the present invention.

[0022] Figure 3 This is a third principle thermal system diagram of an internal combustion engine-type combined cycle heat pump system provided by the present invention.

[0023] Figure 4 This is the fourth principle thermodynamic system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0024] Figure 5 This is the fifth principle thermal system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0025] Figure 6 This is the sixth principle thermodynamic system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0026] Figure 7 This is the seventh principle thermal system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0027] Figure 8 This is the eighth principle thermal system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0028] Figure 9 This is the ninth principle thermal system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0029] Figure 10 This is the tenth principle thermal system diagram of an internal combustion engine-type combined cycle heat pump system provided by the present invention.

[0030] Figure 11 This is the 11th principle thermal system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0031] Figure 12 This is the 12th principle thermal system diagram of the internal combustion engine combined cycle heat pump system provided by the present invention.

[0032] In the diagram, 1-internal combustion engine, 2-steam generator, 3-boost pump, 4-injector, 5-compressor, 6-heater, 7-throttle valve, 8-evaporator, 9-regenerator, 10-expander, 11-secondary heater, 12-secondary regenerator, 13-two-phase expander, 14-nozzle, 15-dual-energy compressor, 16-expander speed increaser, 17-steam chamber, 18-secondary nozzle, A-additional heater, B-air compressor, C-high-temperature regenerator. Detailed implementation method:

[0033] 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.

[0034] Figure 1 The combined cycle heat pump system shown is implemented as follows:

[0035] (1) Structurally, it is mainly composed of an internal combustion engine, a steam generator, a booster pump, an injector, a compressor, a heater, a throttle valve, and an evaporator. There is an external air passage connected to the internal combustion engine 1, an external fuel passage connected to the internal combustion engine 1, a gas passage connected to the steam generator 2 and then connected to the outside, a cooling medium passage connected to the outside, a refrigerant vapor passage connected to the compressor 5 and the heater 6, a condensate pipeline connected to the evaporator 8 via the throttle valve 7, a refrigerant vapor passage connected to the compressor 5, a liquid medium pipeline connected to the steam generator 2 via the booster pump 3, a working steam passage connected to the high-pressure steam inlet of the injector 4, a heated medium passage connected to the heater 6 and then connected to the low-pressure steam inlet of the injector 4, a user steam passage connected to the outside, and a low-temperature heat medium passage connected to the outside. The internal combustion engine 1 is connected to the compressor 5 and transmits power.

[0036] (2) In terms of process, external air enters the internal combustion engine 1, and external fuel enters the internal combustion engine 1. The fuel and air complete a series of processes, including combustion and expansion, in the cylinder of the internal combustion engine 1. The exhaust gas emitted by the internal combustion engine 1 flows through the steam generator 2 and releases heat before being discharged to the outside. The cooling medium flows through the cooling cylinder liner of the internal combustion engine 1 to carry away the discharged cooling heat load. The refrigerant vapor emitted by the compressor 5 enters the heater 6 to release heat and condense. It flows through the throttle valve 7 to reduce pressure and temperature, and then enters the evaporator 8 to absorb heat and vaporize. After that, it enters the compressor 5 to increase pressure and temperature. The heated medium flows through the heater 6 to absorb heat and vaporize. The liquid medium flows through the booster pump 3 to increase pressure and then enters the steam generator 2 to absorb heat and vaporize. After that, it enters the injector 4 through the high-pressure steam inlet. Steam flows through nozzles, where its pressure is reduced and its speed increased to form a low-pressure system. The refrigerant steam generated by heater 6 is drawn into the low-pressure zone of injector 4. After the two steam streams mix, they flow through diffuser, where their speed is reduced and their pressure is increased to form medium-pressure steam, which is then supplied to the outside. Fuel provides driving heat load through combustion, and low-temperature heat medium provides low-temperature heat load through evaporator 8. Users receive steam-type heat load. Air and gas carry away the exhaust heat load through the inlet and outlet processes, and cooling medium carries away the exhaust cooling heat load through the inlet and outlet processes of internal combustion engine 1. The mechanical energy output by internal combustion engine 1 is supplied to compressor 5 as power, or the mechanical energy output by internal combustion engine 1 is supplied to compressor 5 and the outside as power, or internal combustion engine 1 and the outside jointly supply power to compressor 5, forming an internal combustion engine type combined cycle heat pump system.

[0037] Figure 2 The combined cycle heat pump system shown is implemented as follows:

[0038] (1) Structurally, in Figure 1In the internal combustion engine combined cycle heat pump system shown, a regenerator 9 is added. The evaporator 8 is connected to the compressor 5 via a refrigerant vapor passage through the regenerator 9. The condensate pipe of the heater 6 is connected to the evaporator 8 via a throttling valve 7. The condensate pipe of the heater 6 is connected to the evaporator 8 via the regenerator 9 and the throttling valve 7.

[0039] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the heater 6 flows through the regenerator 9 to release heat and cool down, flows through the throttling valve 7 to reduce pressure and cool down, flows through the evaporator 8 to absorb heat and vaporize, flows through the regenerator 9 to absorb heat and increase temperature, and then enters the compressor 5 to increase pressure and temperature, forming the internal combustion engine type combined cycle heat pump system.

[0040] Figure 3 The combined cycle heat pump system shown is implemented as follows:

[0041] (1) Structurally, in Figure 1 In the internal combustion engine-type combined cycle heat pump system shown, a regenerator, an expander, and a second heater are added. The compressor 5 is connected to the heater 6 via a refrigerant vapor channel. The refrigerant vapor channel of the compressor 5 is then connected to the second heater 11 and splits into two paths: the first path connects to the heater 6 and the second path connects to the expander 10. The expander 10 also has a refrigerant vapor channel that connects to the regenerator 9 and then to the compressor 5 via an intermediate port. The heater 6 has a condensate line that connects to the evaporator 8 via a throttling valve 7. The refrigerant medium of the heater 6, whether fully condensed or not, is connected to the evaporator 8 via the regenerator 9 and the throttling valve 7. The second heater 11 also has a heated medium channel that connects to the outside. The expander 10 is connected to the compressor 5 and transmits power.

[0042] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference lies in the following: the refrigerant vapor discharged from the compressor 5 flows through the second heater 11 to release heat and cool down, and then splits into two paths - the first path enters the heater 6 for complete or incomplete condensation, and the second path enters the expander 10; the refrigerant vapor flows through the expander 10 to reduce pressure and do work, flows through the regenerator 9 to absorb heat and heat up, and enters the compressor 5 through the intermediate air intake port to increase pressure and temperature; the refrigerant medium discharged from the heater 6 flows through the regenerator 9 and releases heat, flows through the throttle valve 7 to reduce pressure and cool down, flows through the evaporator 8 to absorb heat and vaporize, and then enters the compressor 5 to increase pressure and temperature; the heated medium obtains a medium-temperature heat load through the second heater 11, and the mechanical energy output by the expander 10 provides power to the compressor 5, forming an internal combustion engine type combined cycle heat pump system.

[0043] Figure 4 The combined cycle heat pump system shown is implemented as follows:

[0044] (1) Structurally, in Figure 1 In the internal combustion engine-type combined cycle heat pump system shown, a regenerator, an expander, a second heater, and a second regenerator are added. The evaporator 8, which previously had a refrigerant vapor passage connected to the compressor 5, is now connected to the compressor 5 via the second regenerator 12. The compressor 5, which previously had a refrigerant vapor passage connected to the heater 6, is now connected to the second heater 11, and then splits into two paths—the first path connects to the heater 6, and the second path connects to the expander 10. The expander 10 also has a refrigerant vapor passage connected to the regenerator 9, and then connects to the compressor 5 through an intermediate port. The heater 6, which previously had a condensate line connected to the evaporator 8 via a throttling valve 7, now has a refrigerant medium line (either fully condensed or partially condensed) connected to the evaporator 8 via the regenerator 9, the second regenerator 12, and the throttling valve 7. The second heater 11 also has a heated medium passage connected to the outside. The expander 10 is connected to the compressor 5 and transmits power.

[0045] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference lies in the following: the refrigerant vapor discharged from the compressor 5 flows through the second heater 11 to release heat and cool down, and then splits into two paths—the first path enters the heater 6 for complete or incomplete condensation, and the second path enters the expander 10; the refrigerant vapor flows through the expander 10 to reduce pressure and do work, flows through the regenerator 9 to absorb heat and heat up, and enters the compressor 5 through the intermediate air intake port to increase pressure and temperature; the refrigerant medium discharged from the heater 6 flows through the regenerator 9 and the second regenerator 12 and gradually releases heat, flows through the throttle valve 7 to reduce pressure and cool down, flows through the evaporator 8 to absorb heat and vaporize, flows through the second regenerator 12 to absorb heat and heat up, and then enters the compressor 5 to increase pressure and temperature; the heated medium obtains a medium-temperature heat load through the second heater 11, and the mechanical energy output by the expander 10 provides power to the compressor 5, forming an internal combustion engine type combined cycle heat pump system.

[0046] Figure 5 The combined cycle heat pump system shown is implemented as follows:

[0047] (1) Structurally, in Figure 1 In the internal combustion engine type combined cycle heat pump system shown, a two-phase expander 13 is added and replaces the throttle valve 7. The two-phase expander 13 is connected to the compressor 5 and transmits power.

[0048] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the heater 6 flows through the two-phase expander 13 to reduce pressure and do work, and then enters the evaporator 8 to absorb heat and vaporize; the mechanical energy output by the two-phase expander 13 provides power to the compressor 5 to form the internal combustion engine type combined cycle heat pump system.

[0049] Figure 6 The combined cycle heat pump system shown is implemented as follows:

[0050] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, a nozzle 14 is added and replaces the throttle valve 7, and a dual-energy compressor 15 is added and replaces the compressor 5.

[0051] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that the condensate discharged from the heater 6 flows through the nozzle 14 to reduce pressure and increase speed, flows through the evaporator 8 to absorb heat and vaporize, and then enters the dual-energy compressor 15 to increase pressure and temperature and reduce speed, forming an internal combustion engine type combined cycle heat pump system.

[0052] Figure 7 The combined cycle heat pump system shown is implemented as follows:

[0053] (1) Structurally, in Figure 4 In the internal combustion engine combined cycle heat pump system shown, a nozzle 14 is added and replaces the throttle valve 7, a dual-energy compressor 15 is added and replaces the compressor 5, and an expander accelerator 16 is added and replaces the expander 10.

[0054] (2) In terms of process, with Figure 4 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the second regenerator 12 flows through the nozzle 14 to reduce pressure and increase speed, flows through the evaporator 8 to absorb heat and vaporize, flows through the second regenerator 12 to absorb heat and increase temperature, and then enters the dual-energy compressor 15 to increase pressure and temperature and decrease speed; the refrigerant vapor discharged from the second heater 11 is divided into two paths - the first path is provided to the heater 6, and the second path enters the expander accelerator 16 to reduce pressure and do work and increase speed, flows through the regenerator 9 to absorb heat and increase temperature, and then enters the dual-energy compressor 15 to increase pressure and temperature and decrease speed, thus forming the internal combustion engine type combined cycle heat pump system.

[0055] Figure 8 The combined cycle heat pump system shown is implemented as follows:

[0056] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, a nozzle and a steam distribution chamber are added. The condensate line of the heater 6 connected to the evaporator 8 via the throttle valve 7 is adjusted so that the heater 6 has a condensate line connected to the steam distribution chamber 17 via the nozzle 14. The steam distribution chamber 17 also has a refrigerant vapor passage connected to the compressor 5 through an intermediate port. The steam distribution chamber 17 also has a condensate line connected to the evaporator 8 after passing through the throttle valve 7.

[0057] (2) In terms of process, with Figure 1Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the heater 6 flows through the nozzle 14 to reduce pressure and increase speed, and then enters the steam distribution chamber 17 for gas-liquid separation; the refrigerant vapor discharged from the steam distribution chamber 17 enters the compressor 5 through the intermediate port to increase pressure and temperature, and the condensate discharged from the steam distribution chamber 17 flows through the throttle valve 7 to reduce pressure and temperature before entering the evaporator 8 for thermal vaporization, thus forming the internal combustion engine type combined cycle heat pump system.

[0058] Figure 9 The combined cycle heat pump system shown is implemented as follows:

[0059] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, a regenerator, nozzle, and steam distribution chamber are added. The refrigerant vapor passage of evaporator 8 connected to compressor 5 is adjusted to connect evaporator 8 to compressor 5 via regenerator 9. The condensate line of heater 6 connected to evaporator 8 via throttle valve 7 is adjusted to connect heater 6 to steam distribution chamber 17 via nozzle 14. Steam distribution chamber 17 also has a refrigerant vapor passage connected to compressor 5 via an intermediate port. Steam distribution chamber 17 also has a condensate line connected to evaporator 8 via regenerator 9 and throttle valve 7.

[0060] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the heater 6 flows through the nozzle 14 to reduce pressure and increase speed, and then enters the steam distribution chamber 17 for gas-liquid separation; the refrigerant vapor discharged from the steam distribution chamber 17 enters the compressor 5 through the intermediate port to increase pressure and temperature; the condensate discharged from the steam distribution chamber 17 flows through the regenerator 9 to release heat and reduce temperature, flows through the throttle valve 7 to reduce pressure and reduce temperature, flows through the evaporator 8 to absorb heat and vaporize, flows through the regenerator 9 to absorb heat and increase temperature, and then enters the compressor 5 to increase pressure and increase temperature, thus forming the internal combustion engine type combined cycle heat pump system.

[0061] Figure 10 The combined cycle heat pump system shown is implemented as follows:

[0062] (1) Structurally, in Figure 8 In the internal combustion engine combined cycle heat pump system shown, a second nozzle 18 is added and replaces the throttle valve 7, and a dual-energy compressor 15 is added and replaces the compressor 5.

[0063] (2) In terms of process, with Figure 8 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that the condensate discharged from the steam distribution chamber 17 flows through the second nozzle 18 to reduce pressure and increase speed, flows through the evaporator 8 to absorb heat and vaporize, and then enters the dual-energy compressor 15 to increase pressure and temperature and reduce speed, forming an internal combustion engine type combined cycle heat pump system.

[0064] Figure 11The combined cycle heat pump system shown is implemented as follows:

[0065] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, a new heater A is added. The internal combustion engine 1 is changed from having a gas passage connecting to the steam generator 2 and then to being connected to the outside. The internal combustion engine 1 has a gas passage connecting to the steam generator 2 and the new heater A and then to being connected to the outside. The new heater A also has a heated medium passage connected to the outside.

[0066] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that the gas emitted by the internal combustion engine 1 flows through the steam generator 2 and the newly added heater A to gradually release heat and cool down before being discharged to the outside; the heated medium obtains a medium-temperature heat load through the newly added heater A, forming an internal combustion engine type combined cycle heat pump system.

[0067] Figure 12 The combined cycle heat pump system shown is implemented as follows:

[0068] (1) Structurally, in Figure 1 In the internal combustion engine-type combined cycle heat pump system shown, an air compressor and a high-temperature regenerator are added. The external air passage connecting to the internal combustion engine 1 is adjusted to connect the external air passage to the internal combustion engine 1 via the air compressor B and the high-temperature regenerator C. The internal combustion engine 1's gas passage connecting to the steam generator 2 is adjusted to connect the internal combustion engine 1 to the high-temperature regenerator C and then to the steam generator 2. The internal combustion engine 1 is connected to the air compressor B and transmits power.

[0069] (2) In terms of process, with Figure 1 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that: the outside air flows through the air compressor B to increase its pressure and temperature, flows through the high-temperature regenerator C to absorb heat and increase its temperature, and then enters the internal combustion engine 1; the gas emitted by the internal combustion engine 1 flows through the high-temperature regenerator C and the steam generator 2 to gradually release heat and decrease its temperature, and then is discharged to the outside; the internal combustion engine 1 provides power to the air compressor B, forming the internal combustion engine type combined cycle heat pump system.

[0070] The effects achievable by this invention—the internal combustion engine-based combined cycle heat pump system proposed in this invention has the following effects and advantages:

[0071] (1) New ideas and technologies for utilizing temperature difference are presented.

[0072] (2) The fuel forms a high-grade heat source and is utilized step by step, which significantly improves energy utilization efficiency.

[0073] (3) New technologies for the efficient and high-value utilization of high-quality fuels in refrigeration / heating / steam / power production and combined cooling / heating / steam / power supply are presented.

[0074] (4) When necessary, external power can be used to raise the temperature of thermal energy, which is flexible and adaptable.

[0075] (5) The two-stage acquisition of low-temperature heat load by the ejector and compressor is beneficial to significantly improve the heating parameters or reduce the compressor pressure boosting share.

[0076] (6) Provide reasonable regeneration technology to effectively improve the coordination of the device in terms of load, performance index, and pressure ratio.

[0077] (7) The injector enables efficient utilization of gas emission heat load and temperature increase of low temperature heat load, which relatively reduces the size of the compressor and effectively reduces the manufacturing cost of the device.

[0078] (8) The process is reasonable, the structure is simple, the manufacturing cost is low, and the system economy is effectively improved.

[0079] (9) 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 internal combustion engine combined cycle heat pump system technology.

Claims

1. An internal combustion engine type combined cycle heat pump system mainly consists of an internal combustion engine, a steam generator, a booster pump, an injector, a compressor, a heater, a throttle valve, and an evaporator; it has an external air passage connected to the internal combustion engine (1), an external fuel passage connected to the internal combustion engine (1), a gas passage connected to the steam generator (2) and then connected to the outside, a cooling medium passage connected to the outside, a refrigerant vapor passage connected to the compressor (5) connected to the heater (6), a condensate pipeline connected to the evaporator (8) via a throttle valve (7), and an evaporator... The evaporator (8) also has a refrigerant vapor channel connected to the compressor (5), and an external liquid medium pipeline connected to the steam generator (2) via the booster pump (3). The steam generator (2) also has a working steam channel connected to the high-pressure steam inlet of the ejector (4). An external heated medium channel is connected to the heater (6) and then connected to the low-pressure steam inlet of the ejector (4). The ejector (4) also has a user steam channel connected to the outside. The evaporator (8) also has a low-temperature heat medium channel connected to the outside. The internal combustion engine (1) is connected to the compressor (5) and transmits power, forming an internal combustion engine type combined cycle heat pump system.

2. An internal combustion engine type combined cycle heat pump system is an internal combustion engine type combined cycle heat pump system as described in claim 1, wherein a regenerator (9) is added, the evaporator (8) is connected to the compressor (5) via a refrigerant vapor passage, and the evaporator (8) is connected to the compressor (5) via the regenerator (9), and the heater (6) is connected to the evaporator (8) via a throttle valve (7), and the heater (6) is connected to the evaporator (8) via the regenerator (9) and the throttle valve (7), thus forming an internal combustion engine type combined cycle heat pump system.

3. An internal combustion engine type combined cycle heat pump system is an internal combustion engine type combined cycle heat pump system according to claim 1, with the addition of a regenerator, an expander and a second heater. The compressor (5) is connected to the heater (6) via a refrigerant vapor channel. The compressor (5) is then connected to the second heater (11) via a refrigerant vapor channel and then split into two paths - the first path is connected to the heater (6) and the second path is connected to the expander (10). The expander (10) also has a refrigerant vapor channel connected to the regenerator (9) and then connected to the compressor (5) via an intermediate port. The heater (6) is connected to the evaporator (8) via a condensate pipeline through a throttle valve (7). The heater (6) has a refrigerant medium pipeline that is either fully condensed or not fully condensed, which is connected to the evaporator (8) via the regenerator (9) and the throttle valve (7). The second heater (11) also has a heated medium channel connected to the outside. The expander (10) is connected to the compressor (5) and transmits power, forming an internal combustion engine type combined cycle heat pump system.

4. An internal combustion engine type combined cycle heat pump system is an internal combustion engine type combined cycle heat pump system of claim 1, with the addition of a regenerator, an expander, a second heater, and a second regenerator. The refrigerant vapor passage of the evaporator (8) is connected to the compressor (5) and adjusted so that the refrigerant vapor passage of the evaporator (8) is connected to the compressor (5) via the second regenerator (12). The refrigerant vapor passage of the compressor (5) is connected to the heater (6) and adjusted so that the refrigerant vapor passage of the compressor (5) is connected to the second heater (11) and then splits into two paths—the first path connects to the heater (6) and the second path connects to the expander (11). The expander (10) and the refrigerant vapor channel are connected to the regenerator (9) and then connected to the compressor (5) through the intermediate port. The condensate pipeline of the heater (6) is connected to the evaporator (8) through the throttle valve (7) and adjusted so that the heater (6) has a refrigerant medium pipeline that is fully condensed or not fully condensed, which is connected to the evaporator (8) through the regenerator (9), the second regenerator (12) and the throttle valve (7). The second heater (11) also has a heated medium channel connected to the outside. The expander (10) is connected to the compressor (5) and transmits power to form an internal combustion engine type combined cycle heat pump system.

5. An internal combustion engine type combined cycle heat pump system is formed by adding a two-phase expander (13) and replacing the throttle valve (7) to any of the internal combustion engine type combined cycle heat pump systems described in claims 1-4. The two-phase expander (13) is connected to the compressor (5) and transmits power to form an internal combustion engine type combined cycle heat pump system.

6. An internal combustion engine type combined cycle heat pump system is formed by adding a nozzle (14) and replacing the throttle valve (7) to any of the internal combustion engine type combined cycle heat pump systems described in claims 1-4, and adding a dual-energy compressor (15) and replacing the compressor (5).

7. An internal combustion engine type combined cycle heat pump system is formed by adding a nozzle (14) to replace the throttle valve (7), adding a dual-energy compressor (15) to replace the compressor (5), and adding an expander speed increaser (16) to replace the expander (10) in any of the internal combustion engine type combined cycle heat pump systems described in claims 3-4, thereby forming an internal combustion engine type combined cycle heat pump system.

8. An internal combustion engine type combined cycle heat pump system is an internal combustion engine type combined cycle heat pump system as described in claim 1, with the addition of a nozzle and a steam distribution chamber. The condensate pipe of the heater (6) is connected to the evaporator (8) through the throttle valve (7), and the condensate pipe of the heater (6) is connected to the steam distribution chamber (17) through the nozzle (14). The steam distribution chamber (17) also has a refrigerant vapor passage connected to the compressor (5) through an intermediate port. The condensate pipe of the steam distribution chamber (17) is connected to the evaporator (8) after passing through the throttle valve (7), thus forming an internal combustion engine type combined cycle heat pump system.

9. An internal combustion engine type combined cycle heat pump system is an internal combustion engine type combined cycle heat pump system as described in claim 1, with the addition of a regenerator, a nozzle and a steam distribution chamber. The evaporator (8) is adjusted to have a refrigerant vapor passage connected to the compressor (5) via the regenerator (9) and the refrigerant vapor passage is adjusted to be connected to the compressor (5) via the regenerator (9). The heater (6) is adjusted to have a condensate line connected to the evaporator (8) via the throttle valve (7) and the condensate line is adjusted to be connected to the steam distribution chamber (17) via the nozzle (14). The steam distribution chamber (17) also has a refrigerant vapor passage connected to the compressor (5) via an intermediate port. The steam distribution chamber (17) also has a condensate line connected to the evaporator (8) via the regenerator (9) and the throttle valve (7), thus forming an internal combustion engine type combined cycle heat pump system.

10. An internal combustion engine type combined cycle heat pump system is formed by adding a second nozzle (18) to replace the throttle valve (7) and adding a dual-energy compressor (15) to replace the compressor (5) in the internal combustion engine type combined cycle heat pump system described in claim 8 or claim 9, thereby forming an internal combustion engine type combined cycle heat pump system.

11. An internal combustion engine type combined cycle heat pump system is formed by adding a new heater (A) to any of the internal combustion engine type combined cycle heat pump systems described in claims 1-10, adjusting the internal combustion engine (1) to have a gas passage connecting to the steam generator (2) and then to have the internal combustion engine (1) connected to the steam generator (2) and the new heater (A) and then to have the new heater (A) connected to the outside, and the new heater (A) also has a heated medium passage connected to the outside, thus forming an internal combustion engine type combined cycle heat pump system.

12. An internal combustion engine type combined cycle heat pump system is an internal combustion engine type combined cycle heat pump system according to any one of claims 1-11, wherein an air compressor and a high-temperature regenerator are added, the external air passage connecting the internal combustion engine (1) is adjusted to the external air passage connecting the internal combustion engine (1) through the air compressor (B) and the high-temperature regenerator (C) and the internal combustion engine (1) gas passage connecting the steam generator (2) is adjusted to the internal combustion engine (1) gas passage connecting the high-temperature regenerator (C) and then connecting the steam generator (2); the internal combustion engine (1) is connected to the air compressor (B) and transmits power, forming an internal combustion engine type combined cycle heat pump system.

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