Internal combustion engine type combined cycle heat pump system

Abstract

The application provides an internal combustion engine combined cycle heat pump system and belongs to the technical field of heat pumps. The system comprises an air passage, a fuel passage, a cooling medium passage, a gas passage, a condensate pipeline, a booster pump, a throttle valve, an evaporator, an ejector, a high-temperature heater, a steam generator, a condenser, a compressor and a heat pump system.

Description

Technical fields:

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

[0002] People need cooling / heating in their daily lives and production processes. Using heat pump technology to provide cooling / heating / steam 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, and gas production 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 principles of simple, proactive, and efficient use of high-quality fuels for cooling / heating, 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 high-temperature heater, a steam generator, a compressor, a heater, a booster pump, a throttle valve, an evaporator, and an injector. Externally, it has an air passage connecting to the internal combustion engine, an external fuel passage connecting to the internal combustion engine, a cooling medium passage connecting the internal combustion engine to the outside, and a gas passage connecting the internal combustion engine to the high-temperature heater and steam generator before connecting to the outside. The compressor has a refrigerant vapor passage connecting to the heater, the heater has a condensate line connecting to the steam generator via the booster pump, and the heater also has a condensate line connecting to the evaporator via the throttle valve. The steam generator has a working steam passage connecting to the high-pressure steam inlet of the injector, the evaporator has a refrigerant vapor passage connecting to the low-pressure steam inlet of the injector, and the injector has a medium-pressure refrigerant vapor passage connecting to the compressor. The high-temperature heater and the heater also have heated medium passages 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 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 injector has a refrigerant vapor passage connected to the compressor, and the injector has a refrigerant vapor passage connected to the compressor via the regenerator, thus forming an internal combustion engine-type combined cycle heat pump system.

[0010] 3. 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 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 injector, and the refrigerant vapor passage of the evaporator is connected to the low-pressure steam inlet of the injector after passing through the regenerator, thus forming an internal combustion engine-type combined cycle heat pump system.

[0011] 4. 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 and a second regenerator. The original configuration of the condensate pipe of the heater being connected to the evaporator via a throttling valve is adjusted so that the condensate pipe of the heater is connected to the evaporator via the regenerator, the second regenerator, and the throttling valve. The original configuration of the refrigerant vapor passage of the evaporator being connected to the low-pressure steam inlet of the ejector is adjusted so that 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 original configuration of the refrigerant vapor passage of the ejector being connected to the compressor is adjusted so that the refrigerant vapor passage of the ejector is connected to the compressor via the regenerator, thus forming an internal combustion engine-type combined cycle heat pump system.

[0012] 5. An internal combustion engine-type combined cycle heat pump system, which is an internal combustion engine-type combined cycle heat pump system described in item 1, with the addition of a regenerator, an expander, and a second heater. The compressor is adjusted so that it has a refrigerant vapor channel connected to the heater, and then the refrigerant vapor channel is connected to the second heater, splitting 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 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 compressor and transmits power, forming an internal combustion engine-type combined cycle heat pump system.

[0013] 6. An internal combustion engine-type combined cycle heat pump system, which is an internal combustion engine-type combined cycle heat pump system described in item 1, with the addition of a regenerator, a second regenerator, an expander, and a second heater. The evaporator's refrigerant vapor passage is adjusted to connect to the low-pressure steam inlet of the ejector, and then the refrigerant vapor passage is connected to the low-pressure steam inlet of the ejector via the second regenerator. The compressor's refrigerant vapor passage is adjusted to connect to the heater, and then the refrigerant vapor passage is connected to the second heater, then split 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 then the heater has a refrigerant medium line (either fully condensed or partially condensed) connected 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, forming an internal combustion engine-type combined cycle heat pump system.

[0014] 7. 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 1-6. The two-phase expander is connected to the compressor and transmits power to form an internal combustion engine type combined cycle heat pump system.

[0015] 8. 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 1-6, 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 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 5-6, adding a dual-energy compressor and replacing the compressor, and adding an expander speed increaser and replacing the expander.

[0017] 10. 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, and the steam distribution chamber also has a condensate line connected to the evaporator via a throttling valve, thus forming an internal combustion engine-type combined cycle heat pump system.

[0018] 11. An internal combustion engine-type combined cycle heat pump system, which 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 refrigerant vapor passage of the evaporator connected to the low-pressure steam inlet of the injector is adjusted so that the refrigerant vapor passage of the evaporator connects to the low-pressure steam inlet of the injector after passing through the regenerator. The condensate pipe of the heater connected to the evaporator through a throttling valve is adjusted so that the heater has a condensate pipe connected to the steam distribution chamber through the 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 pipe connected to the evaporator through the regenerator and the throttling valve, 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 formed by adding a second nozzle and replacing the throttle valve to any of the internal combustion engine type combined cycle heat pump systems described in items 10-11, thereby forming an internal combustion engine type combined cycle heat pump system.

[0020] 13. 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 1-12, 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 internal combustion engine via the air compressor and the high-temperature regenerator. The internal combustion engine's gas passage connecting to the high-temperature heater and the steam generator before connecting to the outside is adjusted to connect the internal combustion engine via the gas passage connecting the high-temperature regenerator, the high-temperature heater, and the steam generator before connecting to the outside. The internal combustion engine is connected to the air compressor and transmits power, forming an internal combustion engine-type combined cycle heat pump system.

[0021] 14. An internal combustion engine type 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 internal combustion engine type combined cycle heat pump systems described in items 1-12, and changing the connection between the internal combustion engine and the high-temperature heater and the steam generator and the outside to the internal combustion engine and the steam generator and the outside, thus forming an internal combustion engine type combined cycle heat pump system.

[0022] 15. An internal combustion engine type combined cycle heat pump system is formed by eliminating the high-temperature heater and its heated medium channel connected to the outside in any of the internal combustion engine type combined cycle heat pump systems described in item 13, and changing the internal combustion engine having a gas channel connecting the high-temperature regenerator, the high-temperature heater and the steam generator before connecting to the outside to having a gas channel connecting the high-temperature regenerator and the steam generator before connecting to the outside, thus forming an internal combustion engine type combined cycle heat pump system. Attached image description:

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Figure 13 This is the 13th principle thermal system diagram of an internal combustion engine combined cycle heat pump system provided by the present invention.

[0036] Figure 14 This is the 14th principle thermal system diagram of an internal combustion engine combined cycle heat pump system provided by the present invention.

[0037] In the diagram, 1-internal combustion engine, 2-high temperature heater, 3-steam generator, 4-compressor, 5-heater, 6-boost pump, 7-throttle valve, 8-evaporator, 9-ejector, 10-regenerator, 11-expander, 12-secondary heater, 13-secondary regenerator, 14-two-phase expander, 15-nozzle, 16-dual-energy compressor, 17-expander speed increaser, 18-steam chamber, 19-secondary nozzle, A-air compressor, B-high temperature regenerator. Detailed implementation method:

[0038] 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.

[0039] Figure 1 The combined cycle heat pump system shown is implemented as follows:

[0040] (1) Structurally, it mainly consists of an internal combustion engine, a high-temperature heater, a steam generator, a compressor, a heater, a booster pump, a throttle valve, an evaporator, and an injector; 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 cooling medium passage connected to the outside, a gas passage connected to the high-temperature heater 2 and the steam generator 3, and then connected to the outside; the compressor 4 has a refrigerant vapor passage connected to the heater 5; the heater 5 also has a condensate pipeline connected to the booster pump 6. The heater 5 is connected to the steam generator 3, and the condensate pipeline is connected to the evaporator 8 via the throttle valve 7. The steam generator 3 also has a working steam channel connected to the high-pressure steam inlet of the ejector 9. The evaporator 8 also has a refrigerant steam channel connected to the low-pressure steam inlet of the ejector 9. The ejector 9 also has a medium-pressure refrigerant steam channel connected to the compressor 4. The high-temperature heater 2 and the heater 5 also have heated medium channels 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 4 and transmits power.

[0041] (2) In terms of process, external fuel and air enter the internal combustion engine 1, and complete a series of processes including combustion and expansion in the cylinder of the internal combustion engine 1. After the internal combustion engine 1 completes its work, the gas flows through the high-temperature heater 2 and the steam generator 3 to gradually release heat and cool down 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 discharged by the compressor 4 enters the heater 5 to release heat and condense, and then splits into two paths - the first path flows through the booster pump 6 to pressurize and then enters the steam generator 3 to absorb heat and vaporize, and the second path flows through the throttle valve 7 to reduce pressure and cool down before entering the evaporator 8 to absorb heat and vaporize. The steam generated by the steam generator 3 enters the injector 9 through the high-pressure steam inlet. The high-pressure steam flows through the nozzle to reduce pressure and increase speed and form a low-pressure The refrigerant vapor emitted from the evaporator 8 is drawn into the low-pressure zone of the injector 9. After the two vapors are mixed, they flow through the diffuser to reduce speed and increase pressure, forming medium-pressure refrigerant vapor, which is then supplied to the compressor 4. The fuel provides the driving heat load through combustion. The heated medium obtains the medium-temperature heat load through the high-temperature heater 2 and the heater 5, respectively. The low-temperature heat medium provides the low-temperature heat load through the evaporator 8. The air and gas carry away the exhaust heat load through the inlet and outlet process, and the cooling medium carries away the exhaust cooling heat load through the inlet and outlet of the internal combustion engine. The mechanical energy output by the internal combustion engine 1 is supplied to the compressor 4 as power, or the mechanical energy output by the internal combustion engine 1 is supplied to the compressor 4 and the outside as power, or the internal combustion engine 1 and the outside jointly provide power to the compressor 4, forming an internal combustion engine type combined cycle heat pump system.

[0042] Figure 2 The combined cycle heat pump system shown is implemented as follows:

[0043] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, a regenerator 10 is added. The condensate pipe of the heater 5 is connected to the evaporator 8 through the throttle valve 7. The heater 5 is then connected to the evaporator 8 through the regenerator 10 and the throttle valve 7. The refrigerant vapor passage of the ejector 9 is connected to the compressor 4. The ejector 9 is then connected to the compressor 4 through the regenerator 10.

[0044] (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 5 flows through the regenerator 10 to release heat and cool down, flows through the throttling valve 7 to reduce pressure and temperature, and then enters the evaporator 8 to absorb heat and vaporize; the refrigerant vapor discharged from the injector 9 flows through the regenerator 10 to absorb heat and increase temperature, and then enters the compressor 4 to increase pressure and temperature, forming an internal combustion engine type combined cycle heat pump system.

[0045] Figure 3 The combined cycle heat pump system shown is implemented as follows:

[0046] (1) Structurally, in Figure 1In the internal combustion engine combined cycle heat pump system shown, a regenerator 10 is added. The condensate pipe of the heater 5 is connected to the evaporator 8 through the throttle valve 7. The condensate pipe of the heater 5 is connected to the evaporator 8 through the regenerator 10 and the throttle valve 7. The refrigerant vapor passage of the evaporator 8 is connected to the low-pressure steam inlet of the ejector 9. The refrigerant vapor passage of the evaporator 8 is connected to the low-pressure steam inlet of the ejector 9 after passing through the regenerator 10.

[0047] (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 5 flows through the regenerator 10 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 10 to absorb heat and increase temperature, and then enters the low-pressure zone of the injector 9 to form the internal combustion engine type combined cycle heat pump system.

[0048] Figure 4 The combined cycle heat pump system shown is implemented as follows:

[0049] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, a regenerator 10 and a second regenerator 11 are added. The condensate pipe of the heater 5 is connected to the evaporator 8 via the throttle valve 7. The condensate pipe of the heater 5 is then connected to the evaporator 8 via the regenerator 10, the second regenerator 11 and the throttle valve 7. The refrigerant vapor passage of the evaporator 8 is connected to the low-pressure steam inlet of the ejector 9. The refrigerant vapor passage of the evaporator 8 is then connected to the low-pressure steam inlet of the ejector 9 via the second regenerator 11. The refrigerant vapor passage of the ejector 9 is then connected to the compressor 4. The refrigerant vapor passage of the ejector 9 is then connected to the compressor 4 via the regenerator 10.

[0050] (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 5 flows through the regenerator 10 and the second regenerator 11 to gradually release heat and cool down, flows through the throttling valve 7 to reduce pressure and temperature, flows through the evaporator 8 to absorb heat and vaporize, flows through the second regenerator 11 to absorb heat and increase temperature, and then enters the low-pressure zone of the ejector 9; the refrigerant vapor discharged from the ejector 9 flows through the regenerator 10 to absorb heat and increase temperature, and then enters the compressor 4 to increase pressure and temperature, forming the internal combustion engine type combined cycle heat pump system.

[0051] Figure 5 The combined cycle heat pump system shown is implemented as follows:

[0052] (1) Structurally, in Figure 1In the internal combustion engine-type combined cycle heat pump system shown, a regenerator, an expander, and a second heater are added. The compressor 4 is adjusted so that it has a refrigerant vapor channel connected to the heater 5, and then the compressor 4 has a refrigerant vapor channel connected to the second heater 13, which is then split into two paths—the first path connects to the heater 5 and the second path connects to the expander 12. The expander 12 also has a refrigerant vapor channel connected to the regenerator 10, and then connected to the compressor 4 through an intermediate port. The heater 5 has a condensate line connected to the evaporator 8 through a throttling valve 7, and the heater 5 has a refrigerant medium line that is either fully condensed or partially condensed, which is connected to the evaporator 8 through the regenerator 10 and the throttling valve 7. The second heater 13 also has a heated medium channel connected to the outside. The expander 12 is connected to the compressor 4 and transmits power.

[0053] (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 4 flows through the second heater 13 to release heat and cool down, and then splits into two paths—the first path enters the heater 5 to release heat and then condenses completely or partially; the second path flows through the expander 12 to reduce pressure and do work, flows through the regenerator 10 to absorb heat and heat up, and enters the compressor 4 through the intermediate air intake port to increase pressure and temperature; the refrigerant medium discharged from the heater 5 is split into two paths—the first path flows through the booster pump 6 to be pressurized and then enters the steam generator 3 to absorb heat and vaporize; the second path flows through the regenerator 10 and releases heat, flows through the throttle valve 7 to reduce pressure and temperature, and then enters the evaporator 8 to absorb heat and vaporize; the heated medium obtains a medium-temperature heat load through the second heater 13, and the mechanical energy output by the expander 12 provides power to the compressor 4, forming an internal combustion engine type combined cycle heat pump system.

[0054] Figure 6 The combined cycle heat pump system shown is implemented as follows:

[0055] (1) Structurally, in Figure 1 In the internal combustion engine-type combined cycle heat pump system shown, a regenerator, a second regenerator, an expander, and a second heater are added. The refrigerant vapor passage of evaporator 8 is connected to the low-pressure steam inlet of injector 9, and the refrigerant vapor passage of evaporator 8 is adjusted to connect to the low-pressure steam inlet of injector 9 via the second regenerator 11. The refrigerant vapor passage of compressor 4 is connected to heater 5, and the refrigerant vapor passage of compressor 4 is adjusted to connect to the second heater 13, then split into two paths—the first path connects to heater 5 and the second path connects to expander 12. Expander 12 also has a refrigerant vapor passage connected to regenerator 10, and then connected to compressor 4 through an intermediate port. The condensate pipeline of heater 5 is connected to evaporator 8 via throttle valve 7, and the refrigerant medium pipeline of heater 5 (whether fully condensed or not fully condensed) is adjusted to connect to evaporator 8 via regenerator 10, second regenerator 11, and throttle valve 7. The second heater 13 also has a heated medium passage connected to the outside. Expander 12 is connected to compressor 4 and transmits power.

[0056] (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 4 flows through the second heater 13 to release heat and cool down, and then splits into two paths—the first path enters the heater 5 to release heat and then condenses completely or partially; the second path flows through the expander 12 to reduce pressure and do work, flows through the regenerator 10 to absorb heat and heat up, and enters the compressor 4 through the intermediate air intake port to increase pressure and temperature; the refrigerant medium discharged from the heater 5 is split into two paths—the first path flows through the booster pump 6 to increase pressure and then enters the steam generator 3 to absorb heat and vaporize; the second path flows through the regenerator 10 and the second regenerator 11 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 11 to absorb heat and heat up, and then enters the low-pressure zone of the ejector 9; the heated medium obtains a medium-temperature heat load through the second heater 13, and the mechanical energy output by the expander 12 provides power to the compressor 4, forming an internal combustion engine type combined cycle heat pump system.

[0057] Figure 7 The combined cycle heat pump system shown is implemented as follows:

[0058] (1) Structurally, in Figure 1 In the internal combustion engine type combined cycle heat pump system shown, a two-phase expander 14 is added and replaces the throttle valve 7. The two-phase expander 14 is connected to the compressor 4 and transmits power.

[0059] (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 5 flows through the two-phase expander 14 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 14 is provided to the compressor 4 to provide power, forming an internal combustion engine type combined cycle heat pump system.

[0060] Figure 8 The combined cycle heat pump system shown is implemented as follows:

[0061] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, a nozzle 15 is added and the throttle valve 7 is replaced.

[0062] (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 5 flows through the nozzle 15 to reduce pressure and increase speed, and then enters the evaporator 8 to absorb heat and vaporize, forming an internal combustion engine type combined cycle heat pump system.

[0063] Figure 9 The combined cycle heat pump system shown is implemented as follows:

[0064] (1) Structurally, in Figure 6 In the internal combustion engine combined cycle heat pump system shown, a nozzle 15 is added and replaces the throttle valve 7, a dual-energy compressor 16 is added and replaces the compressor 4, and an expander accelerator 17 is added and replaces the expander 12.

[0065] (2) In terms of process, with Figure 6 Compared to the internal combustion engine type combined cycle heat pump system shown, the difference is that: the condensate discharged from the second regenerator 11 flows through the nozzle 15 to reduce pressure and increase speed, flows through the evaporator 8 to absorb heat and vaporize, flows through the second regenerator 11 to absorb heat and increase temperature, and then enters the low-pressure zone of the ejector 9; the refrigerant vapor discharged from the second heater 13 is divided into two paths - the first path enters the heater 5, and the second path enters the expander accelerator 16 to reduce pressure and do work and increase speed, flows through the regenerator 10 to absorb heat and increase temperature, and enters the dual-energy compressor 16 to increase pressure and temperature and reduce speed, thus forming the internal combustion engine type combined cycle heat pump system.

[0066] Figure 10 The combined cycle heat pump system shown is implemented as follows:

[0067] (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 pipe of the heater 5 is connected to the evaporator 8 through the throttle valve 7. The heater 5 is adjusted to have a condensate pipe connected to the steam distribution chamber 18 through the nozzle 15. The steam distribution chamber 18 also has a refrigerant vapor passage connected to the compressor 4 through the intermediate port. The steam distribution chamber 18 also has a condensate pipe connected to the evaporator 8 through the throttle valve 7.

[0068] (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 5 flows through the nozzle 15 to reduce pressure and increase speed, and then enters the steam distribution chamber 18 for gas-liquid separation; the refrigerant vapor discharged from the steam distribution chamber 18 enters the compressor 4 through the intermediate port to increase pressure and temperature, and the condensate discharged from the steam distribution chamber 18 flows through the throttle valve 7 to reduce pressure and temperature and then enters the evaporator 8 to absorb heat and vaporize, forming the internal combustion engine type combined cycle heat pump system.

[0069] Figure 11 The combined cycle heat pump system shown is implemented as follows:

[0070] (1) Structurally, in Figure 1In 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 the low-pressure steam inlet of injector 9 is adjusted so that the refrigerant vapor passage of evaporator 8 connects to the low-pressure steam inlet of injector 9 after passing through regenerator 10. The condensate line of heater 5 connected to evaporator 8 through throttle valve 7 is adjusted so that heater 5 connects to steam distribution chamber 18 through nozzle 15. Steam distribution chamber 18 also has a refrigerant vapor passage connected to compressor 4 through an intermediate port. Steam distribution chamber 18 also has a condensate line connected to evaporator 8 through regenerator 10 and throttle valve 7.

[0071] (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 5 flows through the nozzle 15 to reduce pressure and increase speed, and then enters the steam distribution chamber 18 for gas-liquid separation; the refrigerant vapor discharged from the steam distribution chamber 18 enters the compressor 4 through the intermediate port to increase pressure and temperature; the condensate discharged from the steam distribution chamber 18 flows through the regenerator 10 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 10 to absorb heat and increase temperature, and then enters the low-pressure area of ​​the injector 9 to form the internal combustion engine type combined cycle heat pump system.

[0072] Figure 12 The combined cycle heat pump system shown is implemented as follows:

[0073] (1) Structurally, in Figure 11 In the internal combustion engine combined cycle heat pump system shown, a second nozzle 19 is added and replaces the throttle valve 7.

[0074] (2) In terms of process, with Figure 11 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 18 flows through the second nozzle 19 to reduce pressure and increase speed, flows through the regenerator 10 to release heat and reduce temperature, flows through the evaporator 8 to absorb heat and vaporize, flows through the regenerator 10 to absorb heat and increase temperature, and then enters the low-pressure area of ​​the injector 9 to form the internal combustion engine type combined cycle heat pump system.

[0075] Figure 13 The combined cycle heat pump system shown is implemented as follows:

[0076] (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 internal combustion engine 1 via the air compressor A and the high-temperature regenerator B. The internal combustion engine 1 is also adjusted to connect to the high-temperature heater 2 and the steam generator 3 via a gas passage before connecting to the outside. The internal combustion engine 1 is connected to the high-temperature regenerator B, the high-temperature heater 2, and the steam generator 3 before connecting to the outside. The internal combustion engine 1 is connected to the air compressor A and transmits power.

[0077] (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: external air flows through air compressor A to increase pressure and temperature, flows through high-temperature regenerator B to absorb heat and increase temperature, and then enters internal combustion engine 1. The gas emitted by internal combustion engine 1 flows through high-temperature regenerator B, high-temperature heater 2 and steam generator 3 to gradually release heat and cool down, and then is discharged to the outside; internal combustion engine 1 provides power to air compressor B, forming an internal combustion engine type combined cycle heat pump system.

[0078] Figure 14 The combined cycle heat pump system shown is implemented as follows:

[0079] (1) Structurally, in Figure 1 In the internal combustion engine combined cycle heat pump system shown, the high-temperature heater 2 and its heated medium channel connected to the outside are removed. Instead of the internal combustion engine 1 having a gas channel connected to the high-temperature heater 2 and the steam generator 3 and then connected to the outside, the internal combustion engine 1 has a gas channel connected to the steam generator 3 and then connected to the outside.

[0080] (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 3 to release heat and cool down before being discharged to the outside, forming an internal combustion engine type combined cycle heat pump system.

[0081] 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:

[0082] (1) New ideas and technologies for utilizing temperature difference are presented.

[0083] (2) The fuel forms a high-grade heat source and is utilized step by step, which significantly improves energy utilization efficiency.

[0084] (3) New technologies for the efficient and high-value utilization of high-quality fuels in refrigeration / heating and combined cooling / heating / power supply are presented.

[0085] (4) When necessary, external power can be used to raise the temperature of thermal energy, which is flexible and adaptable.

[0086] (5) The compressor and the ejector jointly obtain the low temperature heat load, which significantly improves the heating parameters or reduces the compressor's pressure boosting share.

[0087] (6) Provide reasonable regeneration technology to effectively improve the coordination of the device in terms of load, performance index, and pressure ratio.

[0088] (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.

[0089] (8) The process is reasonable, the structure is simple, the manufacturing cost is low, and the system economy is effectively improved.

[0090] (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 high-temperature heater, a steam generator, a compressor, a heater, a booster pump, a throttle valve, an evaporator, and an injector; 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 cooling medium passage connected to the outside, a gas passage connected to the high-temperature heater (2) and the steam generator (3) and then connected to the outside, the compressor (4) has a refrigerant vapor passage connected to the heater (5), and the heater (5) has a condensate pipeline connected to the steam generator (3) via the booster pump (6). The system is connected to the evaporator (8) via a condensate pipe through a throttle valve (7), the steam generator (3) has a working steam channel connected to the high-pressure steam inlet of the ejector (9), the evaporator (8) has a refrigerant steam channel connected to the low-pressure steam inlet of the ejector (9), and the ejector (9) has a medium-pressure refrigerant steam channel connected to the compressor (4); the high-temperature heater (2) and the heater (5) also have heated medium channels connected to the outside, the evaporator (8) also has a low-temperature heat medium channel connected to the outside, and the internal combustion engine (1) is connected to the compressor (4) 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 (10) is added, the condensate pipe of the heater (5) is connected to the evaporator (8) through the throttle valve (7) and adjusted to the condensate pipe of the heater (5) being connected to the evaporator (8) through the regenerator (10) and the throttle valve (7), and the refrigerant vapor passage of the ejector (9) is connected to the compressor (4) and adjusted to the refrigerant vapor passage of the ejector (9) being connected to the compressor (4) through the regenerator (10), thereby 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 as described in claim 1, with the addition of a regenerator (10), the connection between the condensate pipe of the heater (5) and the evaporator (8) via the throttle valve (7) is adjusted so that the condensate pipe of the heater (5) is connected to the evaporator (8) via the regenerator (10) and the throttle valve (7), and the connection between the refrigerant vapor passage of the evaporator (8) and the low-pressure steam inlet of the ejector (9) is adjusted so that the refrigerant vapor passage of the evaporator (8) is connected to the low-pressure steam inlet of the ejector (9) after passing through the regenerator (10), thus 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 as described in claim 1, with the addition of a regenerator (10) and a second regenerator (11). The condensate pipe of the heater (5) is connected to the evaporator (8) through the throttle valve (7) and adjusted to connect the condensate pipe of the heater (5) through the regenerator (10), the second regenerator (11) and the throttle valve (7) to the evaporator (8). The refrigerant vapor passage of the evaporator (8) is connected to the low-pressure steam inlet of the ejector (9) and adjusted to connect the refrigerant vapor passage of the evaporator (8) through the second regenerator (11) to the low-pressure steam inlet of the ejector (9). The refrigerant vapor passage of the ejector (9) is connected to the compressor (4) and adjusted to connect the refrigerant vapor passage of the ejector (9) through the regenerator (10) to the compressor (4), thus forming an internal combustion engine type combined cycle heat pump system.

5. 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, an expander, and a second heater. The compressor (4) is adjusted to have a refrigerant vapor channel connected to the heater (5) so that the compressor (4) has a refrigerant vapor channel connected to the second heater (13) and then splits into two paths - the first path connects to the heater (5) and the second path connects to the expander (12). The expander (12) also has a refrigerant vapor channel connected to the regenerator (10) and then connected to the compressor (4) through an intermediate port. The heater (5) has a condensate pipeline connected to the evaporator (8) through a throttle valve (7) so that the heater (5) has a refrigerant medium pipeline that is fully condensed or not fully condensed connected to the evaporator (8) through the regenerator (10) and the throttle valve (7). The second heater (13) also has a heated medium channel connected to the outside. The expander (12) is connected to the compressor (4) and transmits power, forming an internal combustion engine type combined cycle heat pump system.

6. 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 second regenerator, an expander, and a second heater. The refrigerant vapor passage of the evaporator (8) is connected to the low-pressure steam inlet of the ejector (9), and the refrigerant vapor passage of the evaporator (8) is adjusted to connect to the low-pressure steam inlet of the ejector (9) via the second regenerator (11). The refrigerant vapor passage of the compressor (4) is connected to the heater (5), and the refrigerant vapor passage of the compressor (4) is adjusted to connect to the second heater (13), and then split into two paths—the first path connects to the heater (5) and the second... The expansion unit (12) is connected to the refrigerant vapor channel, which is connected to the regenerator (10) and then connected to the compressor (4) through the intermediate port. The condensate pipeline of the heater (5) is connected to the evaporator (8) through the throttle valve (7). The heater (5) is adjusted to have a refrigerant medium pipeline that is fully condensed or not fully condensed, which is connected to the evaporator (8) through the regenerator (10), the second regenerator (11) and the throttle valve (7). The second heater (13) also has a heated medium channel connected to the outside. The expansion unit (12) is connected to the compressor (4) and transmits power to form an internal combustion engine type combined cycle heat pump system.

7. An internal combustion engine type combined cycle heat pump system is formed by adding a two-phase expander (14) and replacing the throttle valve (7) to any of the internal combustion engine type combined cycle heat pump systems described in claims 1-6. The two-phase expander (14) is connected to the compressor (4) and transmits power to form an internal combustion engine type combined cycle heat pump system.

8. An internal combustion engine type combined cycle heat pump system is formed by adding a nozzle (15) and replacing the throttle valve (7) to any of the internal combustion engine type combined cycle heat pump systems described in claims 1-6, thereby forming an internal combustion engine type combined cycle heat pump system.

9. An internal combustion engine type combined cycle heat pump system is formed by adding a nozzle (15) to replace the throttle valve (7), adding a dual-energy compressor (16) to replace the compressor (4), and adding an expander speed increaser (17) to replace the expander (12) in any of the internal combustion engine type combined cycle heat pump systems described in claims 5-6, thereby forming an internal combustion engine type combined cycle heat pump system.

10. 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 (5) is connected to the evaporator (8) through a throttle valve (7), and the condensate pipe of the heater (5) is connected to the steam distribution chamber (18) through the nozzle (15). The steam distribution chamber (18) also has a refrigerant vapor passage connected to the compressor (4) through an intermediate port. The steam distribution chamber (18) also has a condensate pipe connected to the evaporator (8) through a throttle valve (7), thus forming an internal combustion engine type combined cycle heat pump system.

11. 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 channel connected to the low-pressure steam inlet of the injector (9) via the regenerator (10) and then connected to the low-pressure steam inlet of the injector (9). The heater (5) is adjusted to have a condensate pipeline connected to the evaporator (8) via a throttle valve (7) via the nozzle (15) and connected to the steam distribution chamber (18). The steam distribution chamber (18) also has a refrigerant vapor channel connected to the compressor (4) via an intermediate port. The steam distribution chamber (18) also has a condensate pipeline connected to the evaporator (8) via the regenerator (10) and the throttle valve (7), thus forming an internal combustion engine type combined cycle heat pump system.

12. An internal combustion engine type combined cycle heat pump system is formed by adding a second nozzle (19) and replacing the throttle valve (7) to any of the internal combustion engine type combined cycle heat pump systems described in claims 10-11, thereby forming an internal combustion engine type combined cycle heat pump system.

13. 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 1-12, wherein an air compressor and a high-temperature regenerator are added, and 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 (A) and the high-temperature regenerator (B), and the internal combustion engine (1) having a gas passage connecting the high-temperature heater (2) and the steam generator (3) before connecting to the outside is adjusted to the internal combustion engine (1) having a gas passage connecting the high-temperature regenerator (B), the high-temperature heater (2) and the steam generator (3) before connecting to the outside; the internal combustion engine (1) is connected to the air compressor (A) and transmits power, forming an internal combustion engine type combined cycle heat pump system.

14. An internal combustion engine type combined cycle heat pump system is formed by eliminating the high-temperature heater (2) and its heated medium channel connected to the outside in any of the internal combustion engine type combined cycle heat pump systems described in claims 1-12, and changing the internal combustion engine (1) from having a gas channel connected to the high-temperature heater (2) and the steam generator (3) and then connected to the outside to having a gas channel connected to the steam generator (3) and then connected to the outside, thus forming an internal combustion engine type combined cycle heat pump system.

15. An internal combustion engine type combined cycle heat pump system is formed by eliminating the high-temperature heater (2) and its heated medium channel connected to the outside in any of the internal combustion engine type combined cycle heat pump systems described in claim 13, and changing the connection between the internal combustion engine (1) and the outside after the gas channel is connected to the high-temperature regenerator (B), the high-temperature heater (2) and the steam generator (3) to the internal combustion engine (1) and the outside after the gas channel is connected to the high-temperature regenerator (B) and the steam generator (3), thus forming an internal combustion engine type combined cycle heat pump system.

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