Water working medium quasi-saturated compression high-temperature heat pump system based on ejector

Abstract

The invention provides a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, and belongs to the field of compression heat pumps. The problems that after an existing compression system flows through a throttling valve, the superheat degree of steam exhaust is large due to high-temperature lift compression, and the loss of available energy in the throttling process from condensate to a two-phase region is too large are solved. A multi-stage spraying atomization structure is adopted, a micro-nano liquid drop mist flow with the particle size controllable to be 50-200 nm and the liquid mass fraction adjustable to be 5%-10% is formed before compression, the airflow humidity regulation and control precision is remarkably improved, the quasi-saturation compression process is matched, and the thermal matching performance and the energy efficiency level of a system are effectively improved; a main flow inlet of the jet atomizer is changed into a compressor outlet from a condenser outlet, so that the response speed is increased, and meanwhile the jet atomizer is suitable for a complex variable-working-condition system; or single-stage compression is optimized into a two-stage compression form, so that higher heating temperature and more stable system operation are realized; or liquid from a lower-pressure position is injected, so that the injection capacity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compression heat pumps, and in particular to an ejector-based water working medium quasi-saturated compression high-temperature heat pump system. Background Art

[0002] Among natural working fluids, water is widely used for its excellent environmental friendliness and physicochemical properties. High-pressure liquid working fluid at the condenser outlet is typically reduced in pressure by a throttling device (such as a throttle valve or thermal expansion valve) before entering the evaporator to achieve pressure and temperature matching. Using a compression heat pump to improve energy quality can achieve higher heating temperatures. Furthermore, due to the large head heat transfer temperature difference and the thermophysical properties of water, it offers high energy efficiency in producing high-temperature hot water. However, due to the high adiabatic index and large specific heat capacity of water vapor, a high exhaust superheat is present during the compression process. Furthermore, research has found that the isenthalpic throttling process losses from the condensate to the two-phase region are the primary irreversible losses in the system. Reducing these losses is key to improving system performance. Current methods for improving cycle performance primarily involve recovering expansion work and increasing the number of compression stages. These methods can overcome throttling losses, reduce the high exhaust temperatures and compression ratios encountered under high temperature rise conditions, improve system stability, and enhance system energy efficiency.

[0003] The most common form of vapor compression is the single-stage compression system, which offers the advantages of a simple structure, a small number of equipment components, easy control and maintenance, and low initial investment and operating costs. For operating conditions with small to medium temperature differences, high evaporating temperatures, or moderate condensing temperatures, single-stage compression can operate efficiently and stably. However, for systems with large temperature rises, single-stage compression can lead to excessively high exhaust temperatures and increased compressor loads, which can lead to decreased efficiency and shortened equipment life in long-term operation. Multi-stage compression systems typically use two or more stages in series, with intermediate liquid spray cooling between stages, so that each stage has a smaller pressure ratio. This has the advantage of significantly reducing exhaust temperatures and compressor loads, improving overall isentropic efficiency and system stability, and is particularly suitable for operating conditions such as high-temperature heads and large temperature differences. However, the increased number of equipment leads to a more complex structure, requiring more stringent system control, requiring consideration of multi-stage coordination and control and adjustment of the liquid spray ratio. Summary of the Invention

[0004] The technical problems to be solved by the present invention are:

[0005] In order to solve the problem that after the existing compression system flows through the throttle valve, there is a large temperature head compression resulting in high superheat of water vapor exhaust and excessive energy loss in the throttling process from the condensate to the two-phase zone.

[0006] The present invention is to solve the above technical problems using the following technical solutions:

[0007] The present invention provides a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, comprising a condenser, an evaporator, an expansion valve, a first compressor, a gas-liquid separation tank, a two-phase ejector, a first ejector atomizer, a first atomizing nozzle, a first baffle and a second baffle.

[0008] The condenser is provided with a hot water inlet and a hot water outlet.

[0009] The evaporator is equipped with a low-level heat source water inlet and a low-level heat source water outlet.

[0010] The refrigerant outlet end of the condenser is connected to the mainstream inlet end of the first jet atomizer and the mainstream inlet end of the two-phase ejector respectively, the lower right liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the first jet atomizer, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, and the end of the pipeline connecting the mixed flow outlet end of the first jet atomizer and the upper right steam inlet end of the gas-liquid separation tank is extended to the gas-liquid separation tank. The first atomizing nozzle is provided, and the first baffle and the second baffle are respectively installed above and below the first atomizing nozzle in the gas-liquid separation tank.

[0011] The refrigerant outlet of the evaporator is connected to the induced flow inlet of the two-phase ejector, the mixed flow outlet of the two-phase ejector is connected to the right steam inlet of the gas-liquid separator, the bottom liquid outlet of the gas-liquid separator is connected to the liquid inlet of the expansion valve, and the liquid outlet of the expansion valve is connected to the refrigerant inlet of the evaporator.

[0012] The top steam outlet end of the gas-liquid separation tank is connected to the inlet end of the first compressor, and the outlet end of the first compressor is connected to the refrigerant inlet end of the condenser.

[0013] A water working medium quasi-saturated compression high-temperature heat pump system based on an ejector comprises a condenser, an evaporator, an expansion valve, a first compressor, a gas-liquid separation tank, a two-phase ejector, a first ejector atomizer, a first baffle and a second baffle.

[0014] The condenser is provided with a hot water inlet and a hot water outlet.

[0015] The evaporator is equipped with a low-level heat source water inlet and a low-level heat source water outlet.

[0016] The refrigerant outlet of the condenser is connected to the mainstream inlet of the two-phase ejector, the refrigerant outlet of the evaporator is connected to the induced flow inlet of the two-phase ejector, the mixed flow outlet of the two-phase ejector is connected to the right steam inlet of the gas-liquid separator, the bottom liquid outlet of the gas-liquid separator is connected to the liquid inlet of the expansion valve, and the liquid outlet of the expansion valve is connected to the refrigerant inlet of the evaporator.

[0017] The top steam outlet end of the gas-liquid separation tank is connected to the inlet end of the first compressor, the outlet end of the first compressor is respectively connected to the refrigerant inlet end of the condenser and the induced flow inlet end of the first jet atomizer, the lower right liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the first jet atomizer, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, and the first baffle and the second baffle are respectively installed above and below the steam inlet of the gas-liquid separation tank.

[0018] A water working medium quasi-saturated compression high-temperature heat pump system based on an ejector includes a condenser, an evaporator, an expansion valve, a first compressor, a second compressor, a gas-liquid separation tank, an atomization buffer tank, a two-phase ejector, a first jet atomizer, a second jet atomizer, a first atomizing nozzle, a second atomizing nozzle, a first baffle, a second baffle, a third baffle and a regulating valve.

[0019] The condenser is provided with a hot water inlet and a hot water outlet.

[0020] The evaporator is equipped with a low-level heat source water inlet and a low-level heat source water outlet.

[0021] A branch of the refrigerant outlet end of the condenser is connected to the mainstream inlet end of the second jet atomizer, the lower right liquid outlet end of the atomization buffer tank is connected to the induced flow inlet end of the second jet atomizer, the mixed flow outlet end of the second jet atomizer is connected to the upper right steam inlet end of the atomization buffer tank, the pipeline connecting the mixed flow outlet end of the second jet atomizer and the upper right steam inlet end of the atomization buffer tank extends to the end inside the atomization buffer tank and is provided with a second atomizing nozzle, the third baffle is installed below the second atomizing nozzle in the atomization buffer tank, the bottom liquid outlet end of the atomization buffer tank is connected to the left liquid inlet end of the gas-liquid separation tank, and a regulating valve is provided on the pipeline connecting the bottom liquid outlet end of the atomization buffer tank and the left liquid inlet end of the gas-liquid separation tank.

[0022] Another branch of the refrigerant outlet end of the condenser is connected to the mainstream inlet end of the first jet atomizer and the mainstream inlet end of the two-phase ejector respectively, the lower right liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the first jet atomizer, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, and the end of the pipeline connecting the mixed flow outlet end of the first jet atomizer and the upper right steam inlet end of the gas-liquid separation tank is extended to the gas-liquid separation tank. A first atomizing nozzle is provided at the end, and a first baffle and a second baffle are respectively installed above and below the first atomizing nozzle in the gas-liquid separation tank.

[0023] The refrigerant outlet of the evaporator is connected to the induced flow inlet of the two-phase ejector, the mixed flow outlet of the two-phase ejector is connected to the right steam inlet of the gas-liquid separator, the lower left liquid outlet of the gas-liquid separator is connected to the liquid inlet of the expansion valve, and the liquid outlet of the expansion valve is connected to the refrigerant inlet of the evaporator.

[0024] The top steam outlet end of the gas-liquid separation tank is connected to the inlet end of the first compressor, the outlet end of the first compressor is connected to the left air inlet end of the atomization buffer tank, the top steam outlet end of the atomization buffer tank is connected to the inlet end of the second compressor, and the outlet end of the second compressor is connected to the refrigerant inlet end of the condenser.

[0025] A water working medium quasi-saturated compression high-temperature heat pump system based on an ejector includes a condenser, an evaporator, an expansion valve, a first compressor, a second compressor, a gas-liquid separation tank, an atomization buffer tank, a two-phase ejector, a first jet atomizer, a second jet atomizer, a first atomizing nozzle, a second atomizing nozzle, a first baffle, a second baffle, a third baffle and a regulating valve.

[0026] The condenser is provided with a hot water inlet and a hot water outlet.

[0027] The evaporator is equipped with a low-level heat source water inlet and a low-level heat source water outlet.

[0028] A branch of the refrigerant outlet end of the condenser is connected to the mainstream inlet end of the second jet atomizer, the upper left liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the second jet atomizer, the mixed flow outlet end of the second jet atomizer is connected to the upper right steam inlet end of the atomization buffer tank, the pipeline connecting the mixed flow outlet end of the second jet atomizer and the upper right steam inlet end of the atomization buffer tank extends to the end inside the atomization buffer tank and is provided with a second atomizing nozzle, the third baffle is installed below the second atomizing nozzle in the atomization buffer tank, the bottom liquid outlet end of the atomization buffer tank is connected to the left liquid inlet end of the gas-liquid separation tank, and a regulating valve is provided on the pipeline connecting the bottom liquid outlet end of the atomization buffer tank and the left liquid inlet end of the gas-liquid separation tank.

[0029] Another branch of the refrigerant outlet end of the condenser is connected to the mainstream inlet end of the first jet atomizer and the mainstream inlet end of the two-phase ejector respectively, the lower right liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the first jet atomizer, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, and the end of the pipeline connecting the mixed flow outlet end of the first jet atomizer and the upper right steam inlet end of the gas-liquid separation tank is extended to the gas-liquid separation tank. A first atomizing nozzle is provided at the end, and a first baffle and a second baffle are respectively installed above and below the first atomizing nozzle in the gas-liquid separation tank.

[0030] The refrigerant outlet of the evaporator is connected to the induced flow inlet of the two-phase ejector, the mixed flow outlet of the two-phase ejector is connected to the right steam inlet of the gas-liquid separator, the lower left liquid outlet of the gas-liquid separator is connected to the liquid inlet of the expansion valve, and the liquid outlet of the expansion valve is connected to the refrigerant inlet of the evaporator.

[0031] The top steam outlet end of the gas-liquid separation tank is connected to the inlet end of the first compressor, the outlet end of the first compressor is connected to the left air inlet end of the atomization buffer tank, the top steam outlet end of the atomization buffer tank is connected to the inlet end of the second compressor, and the outlet end of the second compressor is connected to the refrigerant inlet end of the condenser.

[0032] A water working medium quasi-saturated compression high-temperature heat pump system based on an ejector includes a condenser, an evaporator, an expansion valve, a first compressor, a second compressor, a gas-liquid separation tank, an atomization buffer tank, a two-phase ejector, a first jet atomizer, a second jet atomizer, a first baffle, a second baffle, a third baffle and a regulating valve.

[0033] The condenser is provided with a hot water inlet and a hot water outlet.

[0034] The evaporator is equipped with a low-level heat source water inlet and a low-level heat source water outlet.

[0035] The refrigerant outlet of the condenser is connected to the mainstream inlet of the two-phase ejector, the refrigerant outlet of the evaporator is connected to the induced flow inlet of the two-phase ejector, the mixed flow outlet of the two-phase ejector is connected to the right steam inlet of the gas-liquid separator, the lower left liquid outlet of the gas-liquid separator is connected to the liquid inlet of the expansion valve, and the liquid outlet of the expansion valve is connected to the refrigerant inlet of the evaporator.

[0036] The top steam outlet end of the gas-liquid separation tank is connected to the inlet end of the first compressor, the outlet end of the first compressor is connected to the left air inlet end of the atomization buffer tank, the top steam outlet end of the atomization buffer tank is connected to the inlet end of the second compressor, the outlet end of the second compressor is respectively connected to the refrigerant inlet end of the condenser, the mainstream inlet end of the first jet atomizer and the mainstream inlet end of the second jet atomizer, the lower right liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the first jet atomizer, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, and the first baffle and the second baffle are respectively installed above and below the steam inlet in the gas-liquid separation tank.

[0037] The lower right liquid outlet end of the atomization buffer tank is connected to the induced flow inlet end of the second jet atomizer, the mixed flow outlet end of the second jet atomizer is connected to the upper right steam inlet end of the atomization buffer tank, the third baffle is installed below the steam inlet in the atomization buffer tank, the bottom liquid outlet end of the atomization buffer tank is connected to the left liquid inlet end of the gas-liquid separation tank, and a regulating valve is provided on the pipeline connecting the bottom liquid outlet end of the atomization buffer tank and the left liquid inlet end of the gas-liquid separation tank.

[0038] A water working medium quasi-saturated compression high-temperature heat pump system based on an ejector includes a condenser, an evaporator, an expansion valve, a first compressor, a second compressor, a gas-liquid separation tank, an atomization buffer tank, a two-phase ejector, a first jet atomizer, a second jet atomizer, a first baffle, a second baffle, a third baffle and a regulating valve.

[0039] The condenser is provided with a hot water inlet and a hot water outlet.

[0040] The evaporator is equipped with a low-level heat source water inlet and a low-level heat source water outlet.

[0041] The refrigerant outlet of the condenser is connected to the mainstream inlet of the two-phase ejector, the refrigerant outlet of the evaporator is connected to the induced flow inlet of the two-phase ejector, the mixed flow outlet of the two-phase ejector is connected to the right steam inlet of the gas-liquid separator, the lower left liquid outlet of the gas-liquid separator is connected to the liquid inlet of the expansion valve, and the liquid outlet of the expansion valve is connected to the refrigerant inlet of the evaporator.

[0042] The top steam outlet end of the gas-liquid separation tank is connected to the inlet end of the first compressor, the outlet end of the first compressor is connected to the left air inlet end of the atomization buffer tank, the top steam outlet end of the atomization buffer tank is connected to the inlet end of the second compressor, the outlet end of the second compressor is respectively connected to the refrigerant inlet end of the condenser, the mainstream inlet end of the first jet atomizer and the mainstream inlet end of the second jet atomizer, the lower right liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the first jet atomizer, the mixed flow outlet end of the first jet atomizer is connected to the upper right steam inlet end of the gas-liquid separation tank, and the first baffle and the second baffle are respectively installed above and below the steam inlet in the gas-liquid separation tank.

[0043] The upper left liquid outlet end of the gas-liquid separation tank is connected to the induced flow inlet end of the second jet atomizer, the mixed flow outlet end of the second jet atomizer is connected to the upper right steam inlet end of the atomization buffer tank, the third baffle is installed below the steam inlet in the atomization buffer tank, the bottom liquid outlet end of the atomization buffer tank is connected to the left liquid inlet end of the gas-liquid separation tank, and a regulating valve is provided on the pipeline connecting the bottom liquid outlet end of the atomization buffer tank and the left liquid inlet end of the gas-liquid separation tank.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] (1) The present invention uses water as the working fluid, which can achieve high-temperature working conditions with an evaporation temperature exceeding 90°C. The high heating capacity per unit volume and excellent heating coefficient of water can achieve efficient high-temperature heating within a large temperature rise range, and is suitable for scenarios with high-quality thermal energy requirements.

[0046] (2) The present invention forms a two-stage spray structure with preliminary and fine-tuning functions by providing an ejector with dual functions of pressure reduction and atomization. The mainstream high-pressure liquid at the condenser outlet is injected into the low-pressure gas at the evaporator outlet to mix the two phases, preparing a mixed mist flow with a particle size of 300nm to 500nm, completing the first-stage preliminary atomization. Further, fine atomization control is achieved by injecting the low-pressure liquid in the gas-liquid separation tank. Specifically, based on the jet atomization technology, a large number of micro-nano droplets with uniform distribution and a particle size distribution of 50nm to 200nm are formed after the mixed working medium flows through the nozzle. The liquid mass ratio of the mist flow is further refined before entering the compressor, achieving the second-stage fine atomization. This method achieves high-precision atomization control. The liquid mass fraction of the airflow after spraying is 5% to 10%, effectively supporting the establishment of quasi-saturated compression and having a higher system performance coefficient.

[0047] (3) The ejector of the present invention uses either gas-liquid or liquid-liquid injection. The atomized water working medium can achieve continuous sensible heat absorption in nanoseconds during the quasi-saturated vapor compression process, significantly suppressing the rise in superheat during the compression process and avoiding the problem of energy efficiency loss caused by overheating of the water working medium. Compared with the traditional intermediate liquid spray cooling method, the spray atomization process of the present invention is close to saturation, with a more compact structure, faster response speed, and higher temperature control accuracy.

[0048] (4) The present invention further proposes a multi-stage injection coordinated control system. This system sets up multi-stage ejectors for different temperature differential operating conditions, and utilizes high-pressure gas at the compressor outlet or high-pressure liquid at the condenser outlet to inject working fluids at different pressure levels. This system achieves precise spray control and working fluid distribution adjustment through differential control. This multi-stage ejection structure can effectively overcome the increased flow resistance caused by increased refrigerant flow, improve ejection efficiency, and is particularly suitable for thermal matching control of systems with large temperature differentials and head heights.

[0049] (5) The present invention expands the traditional single-stage compression into a two-stage compression structure that includes injection atomization and pressure reduction and throttling processes, significantly improving the operating stability and energy efficiency of the system under high-temperature head conditions, and can achieve a high-temperature heat source with a stable output temperature of about 150°C, which is suitable for scenarios such as high-temperature industrial heating and energy-saving transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 Schematic comparison diagrams of the cooling and compression process of the present system and the multi-stage compression system in an embodiment of the present invention, wherein (a) is a schematic diagram of the multi-stage compression system with intermediate liquid spray cooling and compression process, and (b) is a schematic diagram of the present system with intermediate spray quasi-saturated cooling and compression process;

[0051] Figure 2 The structure of a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector in an embodiment of the present invention Figure 1 ;

[0052] Figure 3 The structure of a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector in an embodiment of the present invention Figure 2 ;

[0053] Figure 4 The structure of a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector in an embodiment of the present invention Figure 3 ;

[0054] Figure 5 The structure of a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector in an embodiment of the present invention Figure 4 ;

[0055] Figure 6 The structure of a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector in an embodiment of the present invention Figure 5 ;

[0056] Figure 7 The structure of a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector in an embodiment of the present invention Figure 6 .

[0057] Description of reference numerals:

[0058] 1. Condenser; 2. Evaporator; 3. Expansion valve; 4. First compressor; 5. Second compressor; 6. Gas-liquid separation tank; 7. Atomization buffer tank; 8. Two-phase ejector; 9. First jet atomizer; 10. Second jet atomizer; 11. First atomizing nozzle; 12. Second atomizing nozzle; 13. First baffle; 14. Second baffle; 15. Third baffle; 21. Regulating valve; 31. First condensing hot water pipeline; 32. Second condensing hot water pipeline; 41. First low-level hot water pipeline; 42. Second low-level hot water pipeline; 51. First water working medium gas pipeline; 52. Second water working medium gas pipeline; 53. Third water working medium gas pipeline; 54. Fourth water working medium gas pipeline; 55. Fifth water working medium gas pipeline; 61. First water working medium Liquid pipeline; 62, second water working medium liquid pipeline; 63, third water working medium liquid pipeline; 64, fourth water working medium liquid pipeline; 65, fifth water working medium liquid pipeline; 71, first mainstream water working medium liquid pipeline; 72, second mainstream water working medium liquid pipeline; 73, third mainstream water working medium liquid pipeline; 74, first mainstream water working medium gas pipeline; 75, second mainstream water working medium gas pipeline; 81, jet flow water working medium gas pipeline; 82, first jet flow water working medium liquid pipeline; 83, second jet flow water working medium liquid pipeline; 84, first mixed flow water working medium pipeline; 85, second mixed flow water working medium pipeline; 86, third mixed flow water working medium pipeline; 87, third jet flow water working medium liquid pipeline; 88, fourth jet flow water working medium liquid pipeline. DETAILED DESCRIPTION

[0059] In the description of the present invention, it should be noted that the terminology in each embodiment, such as "up", "down", "front", "back", "left", "right", etc., which indicate directions, are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated in accordance with the specific directions and defined operations and methods and structures in the specification. Such directional nouns do not constitute a limitation to the present invention.

[0060] In the description of the present invention, it should be noted that the terms "first," "second," and "third" mentioned in the embodiments of the present invention are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first," "second," or "third" may explicitly or implicitly include one or more of such features.

[0061] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0062] Specific implementation plan 1: Combined Figure 2 As shown, the present invention provides a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, comprising a condenser 1, an evaporator 2, an expansion valve 3, a first compressor 4, a gas-liquid separation tank 6, a two-phase ejector 8, a first jet atomizer 9, a first atomizing nozzle 11, a first baffle 13, a second baffle 14, a first condensing hot water pipeline 31, a second condensing hot water pipeline 32, a first low-level hot water pipeline 41, a second low-level hot water pipeline 42, a first water working medium gas pipeline 51, a second water working medium gas pipeline 52, a first water working medium liquid pipeline 61, a third water working medium liquid pipeline 63, a fourth water working medium liquid pipeline 64, a first mainstream water working medium liquid pipeline 71, a second mainstream water working medium liquid pipeline 72, an ejector flow water working medium gas pipeline 81, a first ejector flow water working medium liquid pipeline 82, a first mixed flow water working medium pipeline 84, and a second mixed flow water working medium pipeline 85.

[0063] The outlet of the first condensing hot water pipe 31 is connected to the hot water inlet of the condenser 1, and the hot water outlet of the condenser 1 is connected to the inlet of the second condensing hot water pipe 32.

[0064] The outlet end of the first low-level hot water pipe 41 is connected to the low-level heat source water inlet end of the evaporator 2, and the low-level heat source water outlet end of the evaporator 2 is connected to the inlet end of the second low-level hot water pipe 42.

[0065] The refrigerant outlet of the condenser 1 is connected to the inlet of the first water working medium liquid pipeline 61, and the outlet of the first water working medium liquid pipeline 61 is respectively connected to the inlet of the first mainstream water working medium liquid pipeline 71 and the inlet of the second mainstream water working medium liquid pipeline 72, and the outlet of the second mainstream water working medium liquid pipeline 72 is connected to the mainstream inlet of the first jet atomizer 9, and the lower right liquid outlet of the gas-liquid separation tank 6 is connected to the inlet of the first jet flow water working medium liquid pipeline 82, and the outlet of the first jet flow water working medium liquid pipeline 82 is connected to the jet flow inlet of the first jet atomizer 9, and the first jet atomizer The mixed flow outlet end of 9 is connected to the inlet end of the second mixed flow water working fluid pipeline 85, and the outlet end of the second mixed flow water working fluid pipeline 85 is connected to the steam inlet end on the upper right side of the gas-liquid separation tank 6. The second mixed flow water working fluid pipeline 85 extends to the end inside the gas-liquid separation tank 6 and is provided with a first atomizing nozzle 11. The first baffle 13 and the second baffle 14 are respectively installed above and below the first atomizing nozzle 11 in the gas-liquid separation tank 6. The setting of the first baffle 13 and the second baffle 14 serves as a partition for the first atomizing nozzle 11, so that the first-level atomization cooling is carried out first, and then the second-level atomization cooling is carried out, and then the mixture enters the compressor.

[0066] The outlet end of the first mainstream water working medium liquid pipeline 71 is connected to the mainstream inlet end of the two-phase ejector 8, the refrigerant outlet end of the evaporator 2 is connected to the inlet end of the induced flow water working medium gas pipeline 81, the outlet end of the induced flow water working medium gas pipeline 81 is connected to the induced flow inlet end of the two-phase ejector 8, the mixed flow outlet end of the two-phase ejector 8 is connected to the inlet end of the first mixed flow water working medium pipeline 84, and the outlet end of the first mixed flow water working medium pipeline 84 is connected to the right steam inlet of the gas-liquid separation tank 6 (The outlet end of the first mixed flow water working medium pipeline 84 is also an atomization outlet, because it is an air-injected liquid, so no nozzle is involved), the bottom liquid outlet of the gas-liquid separation tank 6 is connected to the inlet end of the third water working medium liquid pipeline 63, the outlet end of the third water working medium liquid pipeline 63 is connected to the liquid inlet end of the expansion valve 3, the liquid outlet end of the expansion valve 3 is connected to the inlet end of the fourth water working medium liquid pipeline 64, and the outlet end of the fourth water working medium liquid pipeline 64 is connected to the refrigerant inlet end of the evaporator 2.

[0067] The top steam outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the first water working medium gas pipeline 51, the outlet end of the first water working medium gas pipeline 51 is connected to the inlet end of the first compressor 4, the outlet end of the first compressor 4 is connected to the inlet end of the second water working medium gas pipeline 52, and the outlet end of the second water working medium gas pipeline 52 is connected to the refrigerant inlet end of the condenser 1.

[0068] The operating principle of this implementation plan:

[0069] After the liquid working medium water releases heat through the condenser 1, its temperature drops, and a part of it flows into the main nozzle of the two-phase ejector 8 through the first mainstream water working medium liquid pipeline 71 as the working fluid, becoming a high-speed flowing low-pressure fluid, absorbing the low-pressure gaseous water in the evaporator 2 and flowing into the ejector nozzle. The two fluids mix with each other in the mixing chamber of the two-phase ejector 8, exchange momentum and energy, and then pass through the diffuser section in the two-phase ejector 8 to form mixed mist droplets with a particle size of 50nm~500nm and enter the gas-liquid separation tank 6. The liquid water continues to enter the evaporator 2 to absorb heat after cooling and reducing pressure through the expansion valve 3, and enters the ejector as the ejection fluid to complete the cycle.

[0070] Another stream of fluid coming out of the condenser 1 passes through the second mainstream water working medium liquid pipeline 72 and enters the mainstream inlet end of the first jet atomizer 9, drawing the low-pressure liquid water from the gas-liquid separation tank 6, and is sprayed by the first atomizing nozzle 11 to form mixed mist droplets with a particle size of 50nm~500nm, which enter the gas-liquid separation tank 6 again. After being mixed with the gaseous water at the outlet of the first mixed flow water working medium pipeline 84 under the action of the two-phase ejector 8, it enters the first compressor 4 for quasi-saturated compression. The compressed gaseous water enters the condenser 1 to release latent heat, thereby heating the condensing hot water pipeline.

[0071] Combine Figure 1 As shown, this solution achieves two overall effects. By constructing a two-stage spray structure with preliminary mist adjustment and fine humidity control functions, it achieves high-precision control of the atomization state of the compressor inlet airflow, significantly enhancing the controllability and system energy efficiency of the quasi-saturated compression process. Specifically, using a first-stage injection device, the mainstream high-pressure liquid at the outlet of condenser 1 is injected into the low-pressure gas at the outlet of evaporator 2 for two-phase mixing, producing a mixed mist flow with a particle size of 300nm to 500nm. Using a second-stage injection device, the low-pressure liquid in the gas-liquid separation tank is further injected. After the mixed working medium flows through the nozzle, a large number of evenly distributed micro-nano droplets with a particle size distribution of 50nm to 200nm are formed, further achieving fine atomization control. The liquid mass fraction of the airflow after spraying is between 5% and 10%, ensuring that the airflow remains near saturation during the compression process, effectively reducing exhaust superheat and improving system stability. In addition, by utilizing the significant thermal properties of water working medium in the high-temperature range, a heating effect greater than 100°C can be achieved.

[0072] This invention ensures the establishment of quasi-saturated compression conditions through stable and graded atomization control. It also enhances heat transfer control capabilities, significantly improving the system's coefficient of performance. Due to the ejector's stable operating characteristics, it is widely applicable in industrial electrified heating and chemical distillation. The overall system coefficient of performance significantly outperforms traditional single-ejector technologies.

[0073] Specific implementation plan 2: Combined Figure 3As shown, the present invention provides a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, comprising a condenser 1, an evaporator 2, an expansion valve 3, a first compressor 4, a gas-liquid separation tank 6, a two-phase ejector 8, a first jet atomizer 9, a first baffle 13, a second baffle 14, a first condensing hot water pipeline 31, a second condensing hot water pipeline 32, a first low-level hot water pipeline 41, a second low-level hot water pipeline 42, a first water working medium gas pipeline 51, a second water working medium gas pipeline 52, a third water working medium gas pipeline 53, a third water working medium liquid pipeline 63, a fourth water working medium liquid pipeline 64, a first mainstream water working medium liquid pipeline 71, a first mainstream water working medium gas pipeline 74, an ejector flow water working medium gas pipeline 81, a first ejector flow water working medium liquid pipeline 82, a first mixed flow water working medium pipeline 84, and a second mixed flow water working medium pipeline 85.

[0074] The outlet of the first condensing hot water pipe 31 is connected to the hot water inlet of the condenser 1, and the hot water outlet of the condenser 1 is connected to the inlet of the second condensing hot water pipe 32.

[0075] The outlet end of the first low-level hot water pipe 41 is connected to the low-level heat source water inlet end of the evaporator 2, and the low-level heat source water outlet end of the evaporator 2 is connected to the inlet end of the second low-level hot water pipe 42.

[0076] The refrigerant outlet of the condenser 1 is connected to the inlet of the first mainstream water working medium liquid pipeline 71, the outlet of the first mainstream water working medium liquid pipeline 71 is connected to the mainstream inlet of the two-phase ejector 8, the refrigerant outlet of the evaporator 2 is connected to the inlet of the ejector water working medium gas pipeline 81, the outlet of the ejector water working medium gas pipeline 81 is connected to the ejector flow inlet of the two-phase ejector 8, and the mixed flow outlet of the two-phase ejector 8 is connected to the first mixed flow water working medium pipeline 84. The inlet end is connected, the outlet end of the first mixed flow water working medium pipeline 84 is connected to the right steam inlet end of the gas-liquid separation tank 6, the bottom liquid outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the third water working medium liquid pipeline 63, the outlet end of the third water working medium liquid pipeline 63 is connected to the liquid inlet end of the expansion valve 3, the liquid outlet end of the expansion valve 3 is connected to the inlet end of the fourth water working medium liquid pipeline 64, and the outlet end of the fourth water working medium liquid pipeline 64 is connected to the refrigerant inlet end of the evaporator 2.

[0077] The top steam outlet of the gas-liquid separation tank 6 is connected to the inlet end of the first water working medium gas pipeline 51, the outlet end of the first water working medium gas pipeline 51 is connected to the inlet end of the first compressor 4, the outlet end of the first compressor 4 is connected to the inlet end of the second water working medium gas pipeline 52, the outlet end of the second water working medium gas pipeline 52 is respectively connected to the inlet end of the third water working medium gas pipeline 53 and the inlet end of the first mainstream water working medium gas pipeline 74, the outlet end of the third water working medium gas pipeline 53 is connected to the refrigerant inlet end of the condenser 1, the outlet end of the first mainstream water working medium gas pipeline 74 is connected to the inlet end of the third water working medium gas pipeline 53 and the inlet end of the first mainstream water working medium gas pipeline 74. The main flow inlet end of a jet atomizer 9 is connected, the lower right liquid outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the first induced flow water working medium liquid pipeline 82, the outlet end of the first induced flow water working medium liquid pipeline 82 is connected to the induced flow inlet end of the first jet atomizer 9, the mixed flow outlet end of the first jet atomizer 9 is connected to the inlet end of the second mixed flow water working medium pipeline 85, the outlet end of the second mixed flow water working medium pipeline 85 is connected to the upper right steam inlet end of the gas-liquid separation tank 6, and the first baffle 13 and the second baffle 14 are respectively installed above and below the steam inlet of the gas-liquid separation tank 6.

[0078] The operating principle of this implementation plan:

[0079] After the liquid working medium water releases heat through the condenser 1, its temperature drops, and it flows into the main nozzle of the two-phase ejector 8 through the first mainstream water working medium liquid pipeline 71 as a working fluid, becoming a high-speed flowing low-pressure fluid, absorbing the low-pressure gaseous water in the evaporator 2 and flowing into the ejector nozzle. The two fluids mix with each other in the mixing chamber of the two-phase ejector 8, exchange momentum and energy, and then pass through the diffuser section of the two-phase ejector 8 to form mixed mist droplets with a particle size of 300nm~500nm and enter the gas-liquid separation tank 6. The liquid water continues to enter the evaporator 2 to absorb heat after cooling and reducing pressure through the expansion valve 3, and enters the ejector as an ejection fluid to complete the cycle.

[0080] The high-pressure gaseous water from the outlet of the first compressor 4 enters the mainstream inlet end of the first jet atomizer 9 through the first mainstream water working medium gas pipeline 74, and draws the low-pressure liquid water from the gas-liquid separation tank 6, and the mixed mist droplets with a particle size of 50nm~200nm are sprayed and enter the gas-liquid separation tank 6 again. After being mixed with the gaseous water from the outlet of the first mixed flow water working medium pipeline 84 under the action of the two-phase ejector 8, it enters the first compressor 4 for quasi-saturated compression. Part of the compressed gaseous water enters the condenser 1 to release latent heat, thereby heating the condensing hot water pipeline.

[0081] Overall, two effects are achieved. By constructing a two-stage injection structure with primary pre-atomization and secondary fine humidity adjustment functions, high-precision atomization control of the compressor inlet airflow is achieved. By preparing micro-nano droplets with a particle size distribution of 50~200nm, the mass fraction of the mixed mist flow is precisely controlled at 5%~10%. The gas-liquid injector atomization method is adopted to control the temperature of the compression process and greatly reduce the exhaust superheat of the compression process. In addition, the heating temperature can be greater than 100°C.

[0082] Overall, the present invention converts the mainstream jet from high-pressure liquid at the outlet of condenser 1 to high-pressure gas at the outlet of the compressor, providing stronger injection capability and thus improving injection efficiency. Furthermore, the gas-liquid injection device offers the advantages of a compact structure and fast response, making it suitable for frequent starts and stops or operating under variable operating conditions, and possessing good system integration and application scalability.

[0083] Specific implementation plan three: combined Figure 4 As shown, the present invention provides a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, comprising a condenser 1, an evaporator 2, an expansion valve 3, a first compressor 4, a second compressor 5, a gas-liquid separation tank 6, an atomization buffer tank 7, a two-phase ejector 8, a first jet atomizer 9, a second jet atomizer 10, a first atomizing nozzle 11, a second atomizing nozzle 12, a first baffle 13, a second baffle 14, a third baffle 15, a regulating valve 21, a first condensing hot water pipeline 31, a second condensing hot water pipeline 32, a first low-level hot water pipeline 41, a second low-level hot water pipeline 42, a first water working medium gas pipeline 51, a second water working medium gas pipeline 52, and a second water working medium gas pipeline 53. the first mixed flow water working medium pipeline 84, the second mixed flow water working medium pipeline 85, and the third mixed flow water working medium pipeline 86.

[0084] The outlet of the first condensing hot water pipe 31 is connected to the hot water inlet of the condenser 1, and the hot water outlet of the condenser 1 is connected to the inlet of the second condensing hot water pipe 32.

[0085] The outlet end of the first low-level hot water pipe 41 is connected to the low-level heat source water inlet end of the evaporator 2, and the low-level heat source water outlet end of the evaporator 2 is connected to the inlet end of the second low-level hot water pipe 42.

[0086] The refrigerant outlet end of the condenser 1 is connected to the inlet end of the first water working medium liquid pipeline 61, and the outlet end of the first water working medium liquid pipeline 61 is respectively connected to the inlet end of the second water working medium liquid pipeline 62 and the inlet end of the third mainstream water working medium liquid pipeline 73, and the outlet end of the third mainstream water working medium liquid pipeline 73 is connected to the mainstream inlet end of the second jet atomizer 10, and the lower right side liquid outlet end of the atomization buffer tank 7 is connected to the inlet end of the second jet flow water working medium liquid pipeline 83, and the outlet end of the second jet flow water working medium liquid pipeline 83 is connected to the jet flow inlet end of the second jet atomizer 10, and the mixed flow outlet end of the second jet atomizer 10 is connected to the inlet end of the third mixed flow water working medium pipeline 86. , the outlet end of the third mixed flow water working medium pipeline 86 is connected to the upper right side steam inlet of the atomizing buffer tank 7, the third mixed flow water working medium pipeline 86 extends to the end of the atomizing buffer tank 7 and is provided with a second atomizing nozzle 12, and a third baffle 15 is installed below the second atomizing nozzle 12 in the atomizing buffer tank 7. The setting of the third baffle 15 plays a role in isolating the second atomizing nozzle 12 from the liquid surface below, so that the compressed gas and the spray mist flow can be more fully mixed, the bottom liquid outlet of the atomizing buffer tank 7 is connected to the inlet end of the fifth water working medium liquid pipeline 65, the fifth water working medium liquid pipeline 65 is provided with a regulating valve 21, and the outlet end of the fifth water working medium liquid pipeline 65 is connected to the left liquid inlet end of the gas-liquid separation tank 6,

[0087] The outlet end of the second water working medium liquid pipeline 62 is connected to the inlet end of the first mainstream water working medium liquid pipeline 71 and the inlet end of the second mainstream water working medium liquid pipeline 72 respectively, the outlet end of the second mainstream water working medium liquid pipeline 72 is connected to the mainstream inlet end of the first jet atomizer 9, the lower right liquid outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the first jet flow water working medium liquid pipeline 82, the outlet end of the first jet flow water working medium liquid pipeline 82 is connected to the first jet atomizer 9 The jet flow inlet end is connected, the mixed flow outlet end of the first jet atomizer 9 is connected to the inlet end of the second mixed flow water working medium pipeline 85, the outlet end of the second mixed flow water working medium pipeline 85 is connected to the steam inlet end on the upper right side of the gas-liquid separation tank 6, and the end of the second mixed flow water working medium pipeline 85 extending to the gas-liquid separation tank 6 is provided with a first atomizing nozzle 11, and the first baffle 13 and the second baffle 14 are respectively installed above and below the first atomizing nozzle 11 in the gas-liquid separation tank 6.

[0088] The outlet end of the first mainstream water working medium liquid pipeline 71 is connected to the mainstream inlet end of the two-phase ejector 8, the refrigerant outlet end of the evaporator 2 is connected to the inlet end of the induced flow water working medium gaseous pipeline 81, the outlet end of the induced flow water working medium gaseous pipeline 81 is connected to the induced flow inlet end of the two-phase ejector 8, the mixed flow outlet end of the two-phase ejector 8 is connected to the inlet end of the first mixed flow water working medium pipeline 84, the outlet end of the first mixed flow water working medium pipeline 84 is connected to the right steam inlet end of the gas-liquid separator 6, the lower left liquid outlet end of the gas-liquid separator 6 is connected to the inlet end of the third water working medium liquid pipeline 63, the outlet end of the third water working medium liquid pipeline 63 is connected to the liquid inlet end of the expansion valve 3, the liquid outlet end of the expansion valve 3 is connected to the inlet end of the fourth water working medium liquid pipeline 64, and the outlet end of the fourth water working medium liquid pipeline 64 is connected to the refrigerant inlet end of the evaporator 2.

[0089] The top steam outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the first water working medium gas pipeline 51, the outlet end of the first water working medium gas pipeline 51 is connected to the inlet end of the first compressor 4, the outlet end of the first compressor 4 is connected to the inlet end of the second water working medium gas pipeline 52, the outlet end of the second water working medium gas pipeline 52 is connected to the left air inlet end of the atomization buffer tank 7, the top steam outlet end of the atomization buffer tank 7 is connected to the inlet end of the third water working medium gas pipeline 53, the outlet end of the third water working medium gas pipeline 53 is connected to the inlet end of the second compressor 5, the outlet end of the second compressor 5 is connected to the inlet end of the fourth water working medium gas pipeline 54, and the outlet end of the fourth water working medium gas pipeline 54 is connected to the refrigerant inlet end of the condenser 1.

[0090] The operating principle of this implementation plan:

[0091] After the liquid working medium water releases heat through the condenser 1, its temperature drops and it is divided into three parts: one part flows into the main nozzle of the two-phase ejector 8 through the first mainstream water working medium liquid pipeline 71 as the working fluid, becoming a high-speed flowing low-pressure fluid, absorbing the low-pressure gaseous water in the evaporator 2 and flowing into the ejector nozzle. The two fluids mix with each other in the mixing chamber of the two-phase ejector 8, exchange momentum and energy, and then pass through the diffuser section of the two-phase ejector 8 to form mixed mist droplets with a particle size of 300nm~500nm and enter the gas-liquid separation tank 6. The liquid water continues to enter the evaporator 2 to absorb heat after cooling and reducing pressure through the expansion valve 3, and enters the ejector as the ejector fluid to complete the cycle.

[0092] Another stream of fluid coming out of the condenser 1 passes through the second mainstream water working medium liquid pipeline 72 and enters the mainstream inlet end of the first jet atomizer 9, where it draws low-pressure liquid water from the gas-liquid separation tank 6, and is sprayed by the first atomizing nozzle 11 to form mixed mist droplets with a particle size of 50nm~200nm, and then enters the gas-liquid separation tank 6 again, where it is mixed with the gaseous phase water passing through the outlet of the first mixed flow water working medium pipeline 84 under the action of the two-phase ejector 8, and then enters the first compressor 4 for quasi-saturated compression. The compressed gaseous water enters the atomization buffer tank 7; the third stream of fluid coming out of the condenser 1 It enters the mainstream inlet end of the second jet atomizer 10 through the third mainstream water working medium liquid pipeline 73, draws low-pressure liquid water from the atomization buffer tank 7, and is sprayed by the second atomizing nozzle 12 to form mixed mist droplets with a particle size of 50nm~500nm, and then enters the atomization buffer tank 7 again. After mixing with the compressed gaseous water, it enters the second compressor 5 for quasi-saturated compression. The compressed gaseous water enters the condenser 1 to release latent heat, thereby heating the condensing hot water pipeline; the liquid water in the atomization buffer tank 7 will be partially drained to the gas-liquid separation tank 6 to maintain a stable water level.

[0093] Overall, two effects are achieved: a high-temperature-rise heating is achieved using a two-stage quasi-saturated compression method, and a high-pressure jet atomizer corresponding to the two-stage compression is provided to achieve graded humidity control and precise atomization control over a wide temperature range. This significantly improves the system's operational stability and energy efficiency under high-temperature head conditions, enabling a stable output heating temperature of around 150°C. The atomization buffer tank 7, serving as an intermediate buffer unit, can regulate and buffer short-term fluctuations in the working fluid flow and pressure during system operation. It can also effectively adjust the suction temperature and humidity, reduce the superheat entering the compressor, and improve the system's adaptability under high-temperature head conditions.

[0094] This invention further proposes a multi-stage coordinated injection control strategy. This strategy employs multiple ejectors for varying temperature differentials, utilizing high-pressure liquid at the condenser outlet to inject low-pressure fluid. This differential control allows for precise spray control and fluid distribution regulation. Compared to traditional intermediate liquid spray cooling methods, this atomization process achieves near-saturation compression, resulting in a compact structure, fast temperature control response, and high regulation accuracy. This significantly improves the system's adaptability and operational performance under complex thermal conditions.

[0095] Specific implementation plan four: combined Figure 5As shown, unlike the third embodiment, the upper left liquid outlet of the gas-liquid separator 6 is connected to the inlet of the third ejector flow liquid pipeline 87, and the outlet of the third ejector flow liquid pipeline 87 is connected to the ejector flow inlet of the second jet atomizer 10. (In the third embodiment, the lower right liquid outlet of the atomization buffer tank 7 is connected to the inlet of the second ejector flow liquid pipeline 83, and the outlet of the second ejector flow liquid pipeline 83 is connected to the ejector flow inlet of the second jet atomizer 10.) By ejecting liquid water at a lower pressure, the lift is increased, which can overcome the incremental resistance loss caused by the increased refrigerant flow rate and thus improve the injection efficiency.

[0096] The other combinations and connection relationships of this embodiment are the same as those of the third embodiment.

[0097] Specific implementation plan five: combined Figure 6 As shown, the present invention provides a water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, including a condenser 1, an evaporator 2, an expansion valve 3, a first compressor 4, a second compressor 5, a gas-liquid separation tank 6, an atomization buffer tank 7, a two-phase ejector 8, a first jet atomizer 9, a second jet atomizer 10, a first baffle 13, a second baffle 14, a third baffle 15, a regulating valve 21, a first condensing hot water pipeline 31, a second condensing hot water pipeline 32, a first low-level hot water pipeline 41, a second low-level hot water pipeline 42, a first water working medium gas pipeline 51, and a second water working medium gas pipeline 52. , a third water working medium gas pipeline 53, a fourth water working medium gas pipeline 54, a fifth water working medium gas pipeline 55, a third water working medium liquid pipeline 63, a fourth water working medium liquid pipeline 64, a fifth water working medium liquid pipeline 65, a first main water working medium liquid pipeline 71, a first main water working medium gas pipeline 74, a second main water working medium gas pipeline 75, an ejector water working medium gas pipeline 81, a first ejector water working medium liquid pipeline 82, a second ejector water working medium liquid pipeline 83, a first mixed water working medium pipeline 84, a second mixed water working medium pipeline 85, and a third mixed water working medium pipeline 86,

[0098] The outlet of the first condensing hot water pipe 31 is connected to the hot water inlet of the condenser 1, and the hot water outlet of the condenser 1 is connected to the inlet of the second condensing hot water pipe 32.

[0099] The outlet end of the first low-level hot water pipe 41 is connected to the low-level heat source water inlet end of the evaporator 2, and the low-level heat source water outlet end of the evaporator 2 is connected to the inlet end of the second low-level hot water pipe 42.

[0100] The refrigerant outlet of the condenser 1 is connected to the inlet of the first mainstream water working medium liquid pipeline 71, the outlet of the first mainstream water working medium liquid pipeline 71 is connected to the mainstream inlet of the two-phase ejector 8, the refrigerant outlet of the evaporator 2 is connected to the inlet of the ejector water working medium gas pipeline 81, the outlet of the ejector water working medium gas pipeline 81 is connected to the ejector flow inlet of the two-phase ejector 8, and the mixed flow outlet of the two-phase ejector 8 is connected to the inlet of the first mixed flow water working medium pipeline 84. The outlet end of the first mixed flow water working medium pipeline 84 is connected to the right steam inlet end of the gas-liquid separation tank 6, the lower left liquid outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the third water working medium liquid pipeline 63, the outlet end of the third water working medium liquid pipeline 63 is connected to the liquid inlet end of the expansion valve 3, the liquid outlet end of the expansion valve 3 is connected to the inlet end of the fourth water working medium liquid pipeline 64, and the outlet end of the fourth water working medium liquid pipeline 64 is connected to the refrigerant inlet end of the evaporator 2.

[0101] The top steam outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the first water working medium gas pipeline 51, the outlet end of the first water working medium gas pipeline 51 is connected to the inlet end of the first compressor 4, the outlet end of the first compressor 4 is connected to the inlet end of the second water working medium gas pipeline 52, the outlet end of the second water working medium gas pipeline 52 is connected to the left air inlet end of the atomization buffer tank 7, the top steam outlet end of the atomization buffer tank 7 is connected to the inlet end of the third water working medium gas pipeline 53, the outlet end of the third water working medium gas pipeline 53 is connected to the inlet end of the second compressor 5, the outlet end of the second compressor 5 is connected to the inlet end of the fourth water working medium gas pipeline 54, and the outlet end of the fourth water working medium gas pipeline 54 is respectively connected to the inlet end of the fifth water working medium gas pipeline 55 and the inlet end of the first mainstream water working medium gas pipeline 74 The inlet end of the second mainstream water working medium gas pipeline 75 is connected, the outlet end of the fifth water working medium gas pipeline 55 is connected to the refrigerant inlet end of the condenser 1, the outlet end of the first mainstream water working medium gas pipeline 74 is connected to the mainstream inlet end of the first jet atomizer 9, the lower right liquid outlet end of the gas-liquid separation tank 6 is connected to the inlet end of the first jet flow water working medium liquid pipeline 82, the outlet end of the first jet flow water working medium liquid pipeline 82 is connected to the jet flow inlet end of the first jet atomizer 9, the mixed flow outlet end of the first jet atomizer 9 is connected to the inlet end of the second mixed flow water working medium pipeline 85, the outlet end of the second mixed flow water working medium pipeline 85 is connected to the upper right steam inlet end of the gas-liquid separation tank 6, the first baffle 13 and the second baffle 14 are respectively installed above and below the steam inlet in the gas-liquid separation tank 6,

[0102] The outlet end of the second mainstream water working medium gaseous pipeline 75 is connected to the mainstream inlet end of the second jet atomizer 10, the lower right liquid outlet end of the atomization buffer tank 7 is connected to the inlet end of the second induced flow water working medium liquid pipeline 83, the outlet end of the second induced flow water working medium liquid pipeline 83 is connected to the induced flow inlet end of the second jet atomizer 10, the mixed flow outlet end of the second jet atomizer 10 is connected to the inlet end of the third mixed flow water working medium pipeline 86, the outlet end of the third mixed flow water working medium pipeline 86 is connected to the upper right steam inlet end of the atomization buffer tank 7, the third baffle 15 is installed below the steam inlet in the atomization buffer tank 7, the bottom liquid outlet of the atomization buffer tank 7 is connected to the inlet end of the fifth water working medium liquid pipeline 65, the fifth water working medium liquid pipeline 65 is provided with a regulating valve 21, and the outlet end of the fifth water working medium liquid pipeline 65 is connected to the left liquid inlet end of the gas-liquid separation tank 6.

[0103] The operating principle of this implementation plan:

[0104] After the liquid working medium water releases heat through the condenser 1, its temperature drops, and it flows into the main nozzle of the two-phase ejector 8 through the first mainstream water working medium liquid pipeline 71 as a working fluid, becoming a high-speed flowing low-pressure fluid, absorbing the low-pressure gaseous water in the evaporator 2 and flowing into the ejector nozzle. The two fluids mix with each other in the mixing chamber of the two-phase ejector 8, exchange momentum and energy, and then pass through the expansion section to form mixed mist droplets with a particle size of 300nm~500nm and enter the gas-liquid separation tank 6. The liquid water continues to enter the evaporator 2 to absorb heat after cooling and reducing pressure through the expansion valve 3, and enters the ejector as an ejection fluid to complete the cycle.

[0105] The high-pressure gaseous water from the outlet of the second compressor 5 enters the main inlet end of the first jet atomizer 9 through the first main stream water working medium gas pipeline 74, and is ejected from the low-pressure liquid water from the gas-liquid separation tank 6. After being sprayed to form mixed mist droplets with a particle size of 50nm~200nm, it enters the gas-liquid separation tank 6 again, and is mixed with the gaseous water from the outlet of the first mixed flow water working medium pipeline 84 under the action of the two-phase ejector 8, and then enters the first compressor 4 for quasi-saturated compression. The compressed gaseous water enters the atomization buffer tank 7; the third part of the high-pressure gaseous water coming out of the second compressor 5 It enters the mainstream inlet end of the second jet atomizer 10 through the second mainstream water working medium gas pipeline 75, draws low-pressure liquid water from the atomization buffer tank 7, and is sprayed to form mixed mist droplets with a particle size of 50nm~500nm, and then enters the atomization buffer tank 7 again. After mixing with the compressed gaseous water, it enters the second compressor 5 for quasi-saturated compression. Part of the compressed gaseous water enters the condenser 1 to release latent heat, thereby heating the condensing hot water pipeline; if the accumulated liquid in the atomization buffer tank 7 increases, part of it will be drained to the gas-liquid separation tank 6 to maintain stable system operation.

[0106] Overall, two effects are achieved. The use of an ejector can improve the utilization rate of available energy, achieving efficient compression and a high-temperature-rise heating process under quasi-saturated conditions. A multi-stage spray atomization structure is used to form a micro-nano droplet mist flow with controllable particle size (50nm~200nm) and adjustable liquid mass fraction (5%~10%) before compression. This significantly improves the accuracy of airflow humidity control and, in conjunction with the quasi-saturated compression process, effectively enhances the system's thermal compatibility and energy efficiency. The micro-nano droplets continuously undergo a vaporization phase transition during the compression process, effectively controlling the exhaust superheat during the compression process and enhancing the stability of the compression process. Furthermore, expanding the single-stage compression form to a two-stage compression can overcome the problem of unstable system operation under large temperature rises in single-stage compression, further achieving a heating temperature of approximately 150°C.

[0107] Specific implementation plan six: combined Figure 7 As shown, unlike the fifth embodiment, the upper left liquid outlet of the gas-liquid separation tank 6 is connected to the inlet of the fourth ejection flow liquid pipeline 88, and the outlet of the fourth ejection flow liquid pipeline 88 is connected to the ejection flow inlet of the second jet atomizer 10 (in the fifth embodiment, the lower right liquid outlet of the atomization buffer tank 7 is connected to the inlet of the second ejection flow liquid pipeline 83, and the outlet of the second ejection flow liquid pipeline 83 is connected to the ejection flow inlet of the second jet atomizer 10). Ejecting liquid from a lower pressure can improve the ejection capacity, thereby improving the injection efficiency.

[0108] The other combinations and connection relationships of this embodiment are the same as those of the specific embodiment five.

[0109] Although the present invention is disclosed as above, the scope of protection disclosed by the present invention is not limited thereto. Those skilled in the art of the present invention may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, characterized by: The invention comprises a condenser (1), an evaporator (2), an expansion valve (3), a first compressor (4), a gas-liquid separation tank (6), a two-phase ejector (8), a first ejector atomizer (9), a first atomizing nozzle (11), a first baffle (13) and a second baffle (14), The condenser (1) is provided with a hot water inlet and a hot water outlet. The evaporator (2) is provided with a low-level heat source water inlet end and a low-level heat source water outlet end. The refrigerant outlet end of the condenser (1) is connected to the mainstream inlet end of the first jet atomizer (9) and the mainstream inlet end of the two-phase ejector (8), respectively. The lower right liquid outlet end of the gas-liquid separation tank (6) is connected to the induced flow inlet end of the first jet atomizer (9), and the mixed flow outlet end of the first jet atomizer (9) is connected to the upper right steam inlet end of the gas-liquid separation tank (6). The pipeline connecting the mixed flow outlet end of the first jet atomizer (9) and the upper right steam inlet end of the gas-liquid separation tank (6) extends to the end inside the gas-liquid separation tank (6) and is provided with a first atomizing nozzle (11). The first baffle (13) and the second baffle (14) are respectively installed above and below the first atomizing nozzle (11) in the gas-liquid separation tank (6). The refrigerant outlet of the evaporator (2) is connected to the ejection flow inlet of the two-phase ejector (8), the mixed flow outlet of the two-phase ejector (8) is connected to the right steam inlet of the gas-liquid separation tank (6), the bottom liquid outlet of the gas-liquid separation tank (6) is connected to the liquid inlet of the expansion valve (3), and the liquid outlet of the expansion valve (3) is connected to the refrigerant inlet of the evaporator (2). The top steam outlet end of the gas-liquid separation tank (6) is connected to the inlet end of the first compressor (4), and the outlet end of the first compressor (4) is connected to the refrigerant inlet end of the condenser (1).

2. A water-based quasi-saturated compression high-temperature heat pump system based on an ejector, characterized by: It includes a condenser (1), an evaporator (2), an expansion valve (3), a first compressor (4), a gas-liquid separation tank (6), a two-phase ejector (8), a first ejector atomizer (9), a first baffle (13) and a second baffle (14), The condenser (1) is provided with a hot water inlet and a hot water outlet. The evaporator (2) is provided with a low-level heat source water inlet end and a low-level heat source water outlet end. The refrigerant outlet of the condenser (1) is connected to the mainstream inlet of the two-phase ejector (8), the refrigerant outlet of the evaporator (2) is connected to the ejection flow inlet of the two-phase ejector (8), the mixed flow outlet of the two-phase ejector (8) is connected to the right steam inlet of the gas-liquid separation tank (6), the bottom liquid outlet of the gas-liquid separation tank (6) is connected to the liquid inlet of the expansion valve (3), and the liquid outlet of the expansion valve (3) is connected to the refrigerant inlet of the evaporator (2). The top steam outlet end of the gas-liquid separation tank (6) is connected to the inlet end of the first compressor (4), the outlet end of the first compressor (4) is respectively connected to the refrigerant inlet end of the condenser (1) and the induced flow inlet end of the first jet atomizer (9), the lower right liquid outlet end of the gas-liquid separation tank (6) is connected to the induced flow inlet end of the first jet atomizer (9), the mixed flow outlet end of the first jet atomizer (9) is connected to the upper right steam inlet end of the gas-liquid separation tank (6), and the first baffle (13) and the second baffle (14) are respectively installed above and below the steam inlet of the gas-liquid separation tank (6).

3. A water-based quasi-saturated compression high-temperature heat pump system based on an ejector, characterized by: The invention comprises a condenser (1), an evaporator (2), an expansion valve (3), a first compressor (4), a second compressor (5), a gas-liquid separation tank (6), an atomization buffer tank (7), a two-phase ejector (8), a first jet atomizer (9), a second jet atomizer (10), a first atomizing nozzle (11), a second atomizing nozzle (12), a first baffle (13), a second baffle (14), a third baffle (15) and a regulating valve (21), The condenser (1) is provided with a hot water inlet and a hot water outlet. The evaporator (2) is provided with a low-level heat source water inlet end and a low-level heat source water outlet end. A branch of the refrigerant outlet end of the condenser (1) is connected to the mainstream inlet end of the second jet atomizer (10), the lower right liquid outlet end of the atomizing buffer tank (7) is connected to the induced flow inlet end of the second jet atomizer (10), the mixed flow outlet end of the second jet atomizer (10) is connected to the upper right steam inlet end of the atomizing buffer tank (7), the pipeline connecting the mixed flow outlet end of the second jet atomizer (10) and the upper right steam inlet end of the atomizing buffer tank (7) extends to the end inside the atomizing buffer tank (7) and is provided with a second atomizing nozzle (12), the third baffle (15) is installed below the second atomizing nozzle (12) in the atomizing buffer tank (7), the bottom liquid outlet end of the atomizing buffer tank (7) is connected to the left liquid inlet end of the gas-liquid separation tank (6), and a regulating valve (21) is provided on the pipeline connecting the bottom liquid outlet end of the atomizing buffer tank (7) and the left liquid inlet end of the gas-liquid separation tank (6). Another branch of the refrigerant outlet end of the condenser (1) is connected to the mainstream inlet end of the first jet atomizer (9) and the mainstream inlet end of the two-phase ejector (8), respectively. The lower right liquid outlet end of the gas-liquid separation tank (6) is connected to the induced flow inlet end of the first jet atomizer (9), and the mixed flow outlet end of the first jet atomizer (9) is connected to the upper right steam inlet end of the gas-liquid separation tank (6). The pipeline connecting the mixed flow outlet end of the first jet atomizer (9) and the upper right steam inlet end of the gas-liquid separation tank (6) extends to the end inside the gas-liquid separation tank (6) and is provided with a first atomizing nozzle (11). The first baffle (13) and the second baffle (14) are respectively installed above and below the first atomizing nozzle (11) in the gas-liquid separation tank (6). The refrigerant outlet of the evaporator (2) is connected to the ejection flow inlet of the two-phase ejector (8), the mixed flow outlet of the two-phase ejector (8) is connected to the right steam inlet of the gas-liquid separation tank (6), the lower left liquid outlet of the gas-liquid separation tank (6) is connected to the liquid inlet of the expansion valve (3), and the liquid outlet of the expansion valve (3) is connected to the refrigerant inlet of the evaporator (2). The top steam outlet end of the gas-liquid separation tank (6) is connected to the inlet end of the first compressor (4), the outlet end of the first compressor (4) is connected to the left air inlet end of the atomizing buffer tank (7), the top steam outlet end of the atomizing buffer tank (7) is connected to the inlet end of the second compressor (5), and the outlet end of the second compressor (5) is connected to the refrigerant inlet end of the condenser (1).

4. A water-based quasi-saturated compression high-temperature heat pump system based on an ejector, characterized by: The invention comprises a condenser (1), an evaporator (2), an expansion valve (3), a first compressor (4), a second compressor (5), a gas-liquid separation tank (6), an atomization buffer tank (7), a two-phase ejector (8), a first jet atomizer (9), a second jet atomizer (10), a first atomizing nozzle (11), a second atomizing nozzle (12), a first baffle (13), a second baffle (14), a third baffle (15) and a regulating valve (21), The condenser (1) is provided with a hot water inlet and a hot water outlet. The evaporator (2) is provided with a low-level heat source water inlet end and a low-level heat source water outlet end. A branch of the refrigerant outlet end of the condenser (1) is connected to the mainstream inlet end of the second jet atomizer (10), the upper left liquid outlet end of the gas-liquid separation tank (6) is connected to the induced flow inlet end of the second jet atomizer (10), the mixed flow outlet end of the second jet atomizer (10) is connected to the upper right steam inlet end of the atomization buffer tank (7), the pipeline connecting the mixed flow outlet end of the second jet atomizer (10) and the upper right steam inlet end of the atomization buffer tank (7) extends to the end inside the atomization buffer tank (7) and is provided with a second atomizing nozzle (12), the third baffle (15) is installed below the second atomizing nozzle (12) in the atomization buffer tank (7), the bottom liquid outlet end of the atomization buffer tank (7) is connected to the left liquid inlet end of the gas-liquid separation tank (6), and a regulating valve (21) is provided on the pipeline connecting the bottom liquid outlet end of the atomization buffer tank (7) and the left liquid inlet end of the gas-liquid separation tank (6). Another branch of the refrigerant outlet end of the condenser (1) is connected to the mainstream inlet end of the first jet atomizer (9) and the mainstream inlet end of the two-phase ejector (8), respectively. The lower right liquid outlet end of the gas-liquid separation tank (6) is connected to the induced flow inlet end of the first jet atomizer (9), and the mixed flow outlet end of the first jet atomizer (9) is connected to the upper right steam inlet end of the gas-liquid separation tank (6). The pipeline connecting the mixed flow outlet end of the first jet atomizer (9) and the upper right steam inlet end of the gas-liquid separation tank (6) extends to the end inside the gas-liquid separation tank (6) and is provided with a first atomizing nozzle (11). The first baffle (13) and the second baffle (14) are respectively installed above and below the first atomizing nozzle (11) in the gas-liquid separation tank (6). The refrigerant outlet of the evaporator (2) is connected to the ejection flow inlet of the two-phase ejector (8), the mixed flow outlet of the two-phase ejector (8) is connected to the right steam inlet of the gas-liquid separation tank (6), the lower left liquid outlet of the gas-liquid separation tank (6) is connected to the liquid inlet of the expansion valve (3), and the liquid outlet of the expansion valve (3) is connected to the refrigerant inlet of the evaporator (2). The top steam outlet end of the gas-liquid separation tank (6) is connected to the inlet end of the first compressor (4), the outlet end of the first compressor (4) is connected to the left air inlet end of the atomizing buffer tank (7), the top steam outlet end of the atomizing buffer tank (7) is connected to the inlet end of the second compressor (5), and the outlet end of the second compressor (5) is connected to the refrigerant inlet end of the condenser (1).

5. A water-based quasi-saturated compression high-temperature heat pump system based on an ejector, characterized by: The invention comprises a condenser (1), an evaporator (2), an expansion valve (3), a first compressor (4), a second compressor (5), a gas-liquid separation tank (6), an atomization buffer tank (7), a two-phase ejector (8), a first jet atomizer (9), a second jet atomizer (10), a first baffle (13), a second baffle (14), a third baffle (15) and a regulating valve (21). The condenser (1) is provided with a hot water inlet and a hot water outlet. The evaporator (2) is provided with a low-level heat source water inlet end and a low-level heat source water outlet end. The refrigerant outlet of the condenser (1) is connected to the main flow inlet of the two-phase ejector (8), the refrigerant outlet of the evaporator (2) is connected to the ejection flow inlet of the two-phase ejector (8), the mixed flow outlet of the two-phase ejector (8) is connected to the right steam inlet of the gas-liquid separation tank (6), the lower left liquid outlet of the gas-liquid separation tank (6) is connected to the liquid inlet of the expansion valve (3), and the liquid outlet of the expansion valve (3) is connected to the refrigerant inlet of the evaporator (2). The top steam outlet end of the gas-liquid separation tank (6) is connected to the inlet end of the first compressor (4), the outlet end of the first compressor (4) is connected to the left air inlet end of the atomizing buffer tank (7), the top steam outlet end of the atomizing buffer tank (7) is connected to the inlet end of the second compressor (5), the outlet end of the second compressor (5) is respectively connected to the refrigerant inlet end of the condenser (1), the mainstream inlet end of the first jet atomizer (9) and the mainstream inlet end of the second jet atomizer (10), the lower right liquid outlet end of the gas-liquid separation tank (6) is connected to the ejection flow inlet end of the first jet atomizer (9), the mixed flow outlet end of the first jet atomizer (9) is connected to the upper right steam inlet end of the gas-liquid separation tank (6), the first baffle (13) and the second baffle (14) are respectively installed above and below the steam inlet in the gas-liquid separation tank (6). The lower right liquid outlet end of the atomizing buffer tank (7) is connected to the induced flow inlet end of the second jet atomizer (10), the mixed flow outlet end of the second jet atomizer (10) is connected to the upper right steam inlet end of the atomizing buffer tank (7), the third baffle (15) is installed below the steam inlet in the atomizing buffer tank (7), the bottom liquid outlet end of the atomizing buffer tank (7) is connected to the left liquid inlet end of the gas-liquid separation tank (6), and a regulating valve (21) is provided on the pipeline connecting the bottom liquid outlet end of the atomizing buffer tank (7) and the left liquid inlet end of the gas-liquid separation tank (6).

6. A water working medium quasi-saturated compression high-temperature heat pump system based on an ejector, characterized by: The invention comprises a condenser (1), an evaporator (2), an expansion valve (3), a first compressor (4), a second compressor (5), a gas-liquid separation tank (6), an atomization buffer tank (7), a two-phase ejector (8), a first jet atomizer (9), a second jet atomizer (10), a first baffle (13), a second baffle (14), a third baffle (15) and a regulating valve (21). The condenser (1) is provided with a hot water inlet and a hot water outlet. The evaporator (2) is provided with a low-level heat source water inlet end and a low-level heat source water outlet end. The refrigerant outlet of the condenser (1) is connected to the main flow inlet of the two-phase ejector (8), the refrigerant outlet of the evaporator (2) is connected to the ejection flow inlet of the two-phase ejector (8), the mixed flow outlet of the two-phase ejector (8) is connected to the right steam inlet of the gas-liquid separation tank (6), the lower left liquid outlet of the gas-liquid separation tank (6) is connected to the liquid inlet of the expansion valve (3), and the liquid outlet of the expansion valve (3) is connected to the refrigerant inlet of the evaporator (2). The top steam outlet end of the gas-liquid separation tank (6) is connected to the inlet end of the first compressor (4), the outlet end of the first compressor (4) is connected to the left air inlet end of the atomizing buffer tank (7), the top steam outlet end of the atomizing buffer tank (7) is connected to the inlet end of the second compressor (5), the outlet end of the second compressor (5) is respectively connected to the refrigerant inlet end of the condenser (1), the mainstream inlet end of the first jet atomizer (9) and the mainstream inlet end of the second jet atomizer (10), the lower right liquid outlet end of the gas-liquid separation tank (6) is connected to the ejection flow inlet end of the first jet atomizer (9), the mixed flow outlet end of the first jet atomizer (9) is connected to the upper right steam inlet end of the gas-liquid separation tank (6), the first baffle (13) and the second baffle (14) are respectively installed above and below the steam inlet in the gas-liquid separation tank (6). The upper left liquid outlet of the gas-liquid separation tank (6) is connected to the induced flow inlet of the second jet atomizer (10), the mixed flow outlet of the second jet atomizer (10) is connected to the upper right steam inlet of the atomization buffer tank (7), the third baffle (15) is installed below the steam inlet of the atomization buffer tank (7), the bottom liquid outlet of the atomization buffer tank (7) is connected to the left liquid inlet of the gas-liquid separation tank (6), and a regulating valve (21) is provided on the pipeline connecting the bottom liquid outlet of the atomization buffer tank (7) and the left liquid inlet of the gas-liquid separation tank (6).

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