A multifunctional ejector experimental test research device

Abstract

The present invention relates to a multifunctional ejector experimental test research device, including an ejector refrigeration unit, a complex fluid test unit and a data acquisition unit. The ejector refrigeration unit includes a power pump, a liquid storage tank 1, a generator, a transparent ejector, a rectifier, a condenser, a liquid storage tank 2 and an evaporator connected in sequence. The refrigerant of the condenser is divided into two paths after flowing out, one path enters the liquid storage tank 1 through the power pump, and the other path enters the liquid storage tank 2 through a throttle valve; the complex fluid test unit includes an oil storage tank with four interfaces, the first interface of the oil storage tank is connected to the rectifier, the second interface of the oil storage tank is connected to the pipeline between the evaporator and the transparent ejector, and the fourth interface of the oil storage tank is connected to the pipeline between the evaporator and the transparent ejector. The research device visualizes the inside of the ejector by setting a transparent ejector, which is conducive to the verification of the design; at the same time, by integrating the complex fluid test unit, the influence of the complex fluid on the ejector is displayed.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration energy saving, in particular to a multifunctional ejector experimental testing and research device. Background Art

[0002] Global warming is an indisputable fact, and the environmental problems it brings pose a serious threat to humans and other creatures on the earth. Under this circumstance, people's demand for refrigeration systems is increasing. As the demand for refrigeration equipment increases, the proportion of refrigeration system energy consumption in the total social energy consumption will increase, which puts forward wider and higher requirements on the application scope and working efficiency of refrigeration systems.

[0003] In the face of severe pressure to reduce emissions, research on using low-grade energy sources such as solar energy to replace conventional energy for refrigeration is of great significance for achieving energy conservation, emission reduction and low-carbon development.

[0004] The ejector is an energy-saving device that can effectively utilize solar energy and waste heat resources. It has the advantages of simple structure, no moving parts and stable operation. It has very broad application prospects in the field of refrigeration energy-saving utilization. However, due to the very complex flow and mixing process inside the ejector, the supersonic flow at the nozzle outlet will produce violent shock waves, and the interaction of the boundary layer when the working fluid and the ejection fluid are mixed also has a great influence on the function of the ejector. At the same time, with the continuous exploration of technology, the combination of compressors and ejectors is also common. The flow of complex fluids mixed with refrigerants, lubricants, nanofluids, etc. inside the ejector is usually simulated by software, but the simulation effect is usually poor, and it is difficult to reflect the actual impact of complex fluids on the ejector, which affects the actual application of the ejector. Summary of the invention

[0005] In order to overcome the defects in the above-mentioned prior art, the purpose of the present invention is to provide a multifunctional injector experimental test and research device. The research device visualizes the inside of the injector by setting a transparent injector, which is beneficial to the verification of the design. At the same time, by integrating a complex fluid test unit, the influence of complex fluid on the injector is displayed to ensure the performance of the injector.

[0006] In order to achieve the above-mentioned invention objectives, the present invention adopts the following technical solutions: a multifunctional ejector experimental test and research device, comprising an ejector refrigeration unit, a complex fluid test unit and a data acquisition unit, wherein the ejector refrigeration unit comprises a power pump, a liquid storage tank 1, a generator, a transparent ejector, a distillation device, a condenser, a liquid storage tank 2 and an evaporator connected in sequence, wherein the generator outlet is connected to the working fluid inlet of the transparent ejector, the evaporator outlet is connected to the injection fluid inlet of the transparent ejector, and the refrigerant of the condenser is divided into two paths after flowing out, one path enters the liquid storage tank 1 through the power pump, and the other path enters the liquid storage tank 2 through the throttle valve; the complex fluid test unit comprises an oil storage tank with four interfaces, wherein the first interface of the oil storage tank is connected to the distillation device, the second interface of the oil storage tank is connected to the pipeline between the evaporator and the transparent ejector, and the fourth interface of the oil storage tank is connected to the pipeline between the evaporator and the transparent ejector.

[0007] As a preferred solution of the present invention, a shut-off valve 1, a power pump 2 and an atomizer 1 are sequentially connected behind the second interface of the oil storage tank, and the outlet of the atomizer 1 is connected to a pipeline between the evaporator and the transparent injector.

[0008] As a preferred solution of the present invention, a shut-off valve 2, a power pump 3 and atomizer 2 are sequentially connected behind the fourth interface of the oil storage tank, and the outlet of the atomizer 2 is connected to a pipeline between the generator and the transparent injector.

[0009] As a preferred solution of the present invention, the complex fluid testing unit further includes an oil filter, and the third interface of the oil storage tank is connected to the oil filter.

[0010] As a preferred embodiment of the present invention, the complex fluid testing unit also includes a volume flow measuring tank 1 and a volume flow measuring tank 2, wherein the volume flow measuring tank 1 is located between the power pump 2 and the atomizer 1, and the volume flow measuring tank 2 is located between the power pump 3 and the atomizer 2.

[0011] As a preferred solution of the present invention, the complex fluid testing unit also includes a fluorescent agent tank. The fluorescent agent in the fluorescent agent tank leaves and enters the stop valve 1. After being fully mixed with the lubricating oil, it enters the atomizer 1 to be atomized into small particles and then flows into the pipes entering the evaporator and the transparent injector respectively, and then enters the injection fluid inlet of the transparent injector after mixing with the refrigerant in the pipe.

[0012] As a preferred embodiment of the present invention, the data acquisition unit includes a data acquisition device, a high-speed camera, a light source, a test device 1 for measuring the pipeline between the generator and the transparent injector, a test device 2 for measuring the pipeline between the transparent injector and the evaporator, a test device 3 for measuring the pipeline between the transparent injector and the oil filter, and a test device 4 for measuring the transparent injector, and the test device 4, the test device 3, the test device 2, the test device 1, the high-speed camera, the light source and the data acquisition device are respectively connected by signals.

[0013] As a preferred solution of the present invention, the test device 1 includes a mass flow meter 1, a pressure sensor 1 and a temperature sensor 1; the test device 2 includes a mass flow meter 2, a pressure sensor 6 and a temperature sensor 3; the test device 3 includes an oil content measuring device, a pressure sensor 5 and a temperature sensor 4; the test device 4 includes a pressure sensor 2, a pressure sensor 3 and a pressure sensor 4.

[0014] As a preferred solution of the present invention, the light source is an LED lamp.

[0015] As a preferred solution of the present invention, the high-speed camera captures images at a fixed frame rate and is signal-connected to the data acquisition device.

[0016] Compared with the prior art, the beneficial effects of the present invention are: a multifunctional injector experimental test and research device in the present invention, which is conducive to design verification by setting a visual transparent injector, facilitates intuitive observation of the state of the injector, and ensures the performance of the injector; by setting a complex fluid testing unit, it is possible to detect the influence of complex fluids on the injector, further ensuring the performance of the injector.

[0017] Furthermore, the present invention can solve the technical problem that the lubricating oil content in the refrigeration system is low and difficult to accurately weigh by providing an oil content measuring device.

[0018] Furthermore, the present invention can better display the flow of the internal flow field of the injector and the distribution of lubricating oil particles in the flow field by providing a fluorescent agent tank and utilizing the fluorescent agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a flow chart of a multifunctional ejector experimental test research device in an embodiment;

[0020] Figure 2 It is a schematic diagram of a detection device for lubricating oil in a multifunctional injector experimental test and research device in an embodiment.

[0021] Figure numerals: 1, power pump 1; 2, liquid storage tank 1; 3, generator; 4, transparent ejector; 5, oil filter; 6, distillator; 7, condenser; 8, three-way valve 1; 9, throttle valve; 10, liquid storage tank 2; 11, evaporator; 12, oil storage tank; 13, fluorescent agent tank; 14, stop valve 1; 15, power pump 2; 16, volume flow measurement tank 1; 17, atomizer 1; 18, stop valve 2; 19, power pump 3; 20, volume flow measurement tank 2; 21, atomizer 2; 22, data acquisition device; 23, mass flow Meter 1; 24. Pressure sensor 1; 25. Temperature sensor 1; 27. Pressure sensor 2; 28. Pressure sensor 3; 29. ​​Pressure sensor 4; 30. Oil content measuring device; 31. Pressure sensor 5; 32. Temperature sensor 4; 33. Mass flow meter 2; 34. Pressure sensor 6; 35. Temperature sensor 3; 36. High-speed camera; 37. Light source; 38. Valve 1; 39. Quick connector 1; 40. Valve 2; 41. Oil tank; 42. Three-way valve 2; 43. Quick connector 2; 44. Vacuum pump. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 to Figure 2As shown, a multifunctional ejector experimental test and research device is mainly composed of an ejector refrigeration unit, a complex fluid test unit and a data acquisition unit. The ejector refrigeration unit supports the operation of a transparent ejector; the complex fluid test unit can mix refrigerants of different components to meet the test requirements of the fluid in the transparent ejector; the data acquisition unit is used to collect the characteristics, specific gravity, flow signal, temperature and pressure of the fluid inside the ejector. The above-mentioned ejector refrigeration unit includes a power pump 1, a liquid storage tank 2, a generator 3, a transparent ejector 4, an oil filter 5, a distillation device 6, a condenser 7, a three-way valve 8, a throttle valve 9, a liquid storage tank 10 and an evaporator 11. The outlet of the power pump 1 is connected to the inlet of the liquid storage tank 2, the outlet of the liquid storage tank 2 is connected to the inlet of the generator 3, the outlet of the generator 3 is connected to the working fluid inlet of the transparent ejector 4, the outlet of the transparent ejector 4 is connected to the inlet of the oil filter 5, and the outlet of the oil filter 5 is connected to the inlet of the oil filter 5. It is connected to the side inlet of the distillation vessel 6, the upper outlet of the distillation vessel 6 is connected to the condenser 7, the outlet of the condenser 7 is connected to the first interface of the three-way valve 8, the second interface of the three-way valve 8 is connected to the inlet of the power pump 1, the third interface of the three-way valve 8 is connected to the inlet of the throttle valve 9, the outlet of the throttle valve 9 is connected to the inlet of the liquid storage tank 10, the outlet of the liquid storage tank 10 is connected to the inlet of the evaporator 11, and the outlet of the evaporator 11 is connected to the injection fluid inlet of the transparent injector 4.

[0026] The refrigerant is condensed into a saturated or supercooled liquid in the condenser 7, and is divided into two fluids through a three-way valve 8. The first fluid is pressurized by a power pump 1 and transported to a liquid storage tank 2. After leaving the liquid storage tank 2, it enters the generator 3 to absorb heat energy and becomes a high-temperature and high-pressure steam refrigerant, and enters the working fluid inlet of the transparent ejector 4; the second fluid passes through the third outlet of the three-way valve 8, enters the throttle valve 9 to throttle and reduce the pressure to become a fluid, enters the liquid storage tank 10, and after leaving the liquid storage tank 10, enters the evaporator 11 to evaporate and absorb heat. After leaving the evaporator 11, the refrigerant enters the transparent ejector 4, and the working fluid and the ejection fluid in the transparent ejector 4 are mixed at equal pressure in the mixing chamber, enter the condenser 7 to condense and release heat, and enter the first interface of the three-way valve 8.

[0027] The complex fluid testing unit also includes an oil filter 5 and a rectifier 6, and also includes an oil storage tank 12 with four interfaces, a fluorescent agent tank 13, a stop valve 14, a power pump 2 15, a volume flow measuring tank 16, an atomizer 17, a stop valve 2 18, a power pump 3 19, a volume flow measuring tank 2 20 and an atomizer 2 21. The lower end outlet of the oil filter 5 is connected to the third interface of the oil storage tank 12, the refrigerant outlet of the oil filter 5 is connected to the inlet of the rectifier 6, the lower end outlet of the rectifier 6 is connected to the first interface of the oil storage tank 12, the fourth interface of the oil storage tank 12 is connected to the inlet of the stop valve 14, the outlet of the stop valve 14 is connected to the inlet of the power pump 2 15, the outlet of the power pump 2 15 is connected to the inlet of the volume flow measuring tank 16, the outlet of the volume flow measuring tank 16 is connected to the inlet of the atomizer 17, and the outlet of the atomizer 17 is connected to the pipeline located between the above-mentioned evaporator 11 and the above-mentioned transparent injector 4. The second interface of the oil storage tank 12 is connected to the inlet of the stop valve 18, the outlet of the stop valve 18 is connected to the inlet of the power pump 19, the outlet of the power pump 19 is connected to the inlet of the volume flow measuring tank 20, the outlet of the volume flow measuring tank 20 is connected to the inlet of the atomizer 21, and the outlet of the atomizer 21 is connected to the pipeline between the generator 3 and the transparent injector 4. The lubricating oil leaves the fourth interface of the oil storage tank 12 and enters the stop valve 14. After leaving the stop valve 14, it is pressurized by the power pump 15, the volume flow of the circuit is measured by the volume flow measuring tank 16, and enters the atomizer 17 which is an oil atomizer. The lubricating oil is atomized into small particles and enters the pipeline between the evaporator 11 and the transparent injector 4. After mixing with the refrigerant in the pipeline, it enters the injection fluid inlet of the transparent injector 4. The lubricating oil leaves the second interface of the oil storage tank 12 and enters the stop valve 2 18. After leaving the stop valve 2 18, it is pressurized by the power pump 3 19, and the volume flow of the circuit is measured by the volume flow measuring tank 2 20. It enters the atomizer 2 21, where the lubricating oil is atomized into small particles and enters the pipeline between the generator 3 and the transparent ejector 4. After mixing with the refrigerant in the pipeline, it enters the working fluid inlet of the transparent ejector 4. The fluorescent agent in the fluorescent agent tank 13 leaves and enters the above-mentioned stop valve 14. After being fully mixed with the lubricating oil, it enters the above-mentioned atomizer 17 and is atomized into small particles. After that, it flows to the pipelines in the above-mentioned evaporator 11 and the above-mentioned transparent ejector 4 respectively, and after mixing with the refrigerant in the pipeline, it enters the injection fluid inlet of the above-mentioned transparent ejector 4.

[0028] The data acquisition unit includes a data acquisition device 22, a high-speed camera 36, ​​a light source 37, a mass flow meter 1 23, a pressure sensor 1 24, a temperature sensor 1 25, a mass flow meter 2 33, a pressure sensor 6 34, a temperature sensor 3 35, an oil content measuring device 30, a pressure sensor 5 31, a temperature sensor 4 32, a pressure sensor 2 27, a pressure sensor 3 28 and a pressure sensor 4 29. The mass flow meter 1 23, the pressure sensor 1 24 and the temperature sensor 1 25 are respectively used to measure the flow rate, pressure and temperature of the fluid in the pipeline between the generator 3 and the transparent injector 4; the mass flow meter 2 33, the pressure sensor 6 34 and the temperature sensor 3 The three 35 are used to measure the flow rate, pressure and temperature of the fluid in the pipeline between the evaporator 11 and the transparent ejector 4 respectively; the above-mentioned pressure sensor two 27 is arranged at the nozzle outlet wall surface in the transparent ejector 4, and is used to measure the pressure value there; the pressure sensor three 28 is installed at the mixing chamber wall surface in the transparent ejector 4, and is used to measure the pressure value of the mixed fluid; the pressure sensor four 29 is installed at the diffusion chamber wall surface in the transparent ejector 4, and is used to measure the pressure value in the diffusion chamber; the oil content measuring device 30, the pressure sensor five 31 and the temperature sensor four 32 are arranged on the pipeline between the transparent ejector 4 and the oil filter 5, and are used to measure the flow rate, pressure and temperature of the fluid in the pipeline respectively. All mass flow meters, pressure sensors and temperature sensors, as well as high-speed cameras 36 and light sources 37 are connected to the data acquisition device 22 to establish signal connections, so as to better collect the flow value, pressure value and temperature value at each point, and effectively analyze the transparent ejector 4 according to the above-mentioned values.

[0029] The light source 37 is an LED light that provides constant brightness for the camera. The high-speed camera 36 captures images at a fixed frame rate of 1000 frames per second and is connected to the data acquisition device 22. Alternatively, the high-speed camera 36 captures the supersonic flow and mixing process of the internal fluid of the ejector, as well as the accompanying condensation phase transition, shock wave and other phenomena with an exposure of less than 1 / 1000 second or a frame rate of more than 250 frames per second, and records the fast-moving objects as photo images on the storage medium. After recording, the images stored on the media can be played in slow motion.

[0030] The specific experimental steps of a multifunctional ejector experimental test research device in the present invention are:

[0031] Step 1: Preliminary preparation for the experiment;

[0032] 1. This experiment requires the system to be under stable operating conditions. Start the power pump 2. After the refrigerant runs smoothly in the circulation system, start the generator 3 until the water in the generator 3 is heated to the working temperature required for the experiment. Adjust the water side flow to stabilize the generator 3, condenser 7 and evaporator 11 at the temperature required for the experiment.

[0033] 2. Start mass flow meter 1 23, pressure sensor 1 24, temperature sensor 1 25, mass flow meter 2 33, pressure sensor 6 34, temperature sensor 3 35, oil content measuring device 30, pressure sensor 5 31, temperature sensor 4 32, pressure sensor 2 27, pressure sensor 3 28 and pressure sensor 4 29 to detect the status of refrigerant at various locations until the data at various locations tend to be normal and stable.

[0034] Step 2: Start the experiment;

[0035] 1. Fix the shooting equipment (high-speed camera 36 and light source 37) at a suitable position, start the light source 37, illuminate the mixing section of the transparent ejector 4, and use the high-speed camera 36 to shoot the flow field distribution of the mixing section of the ejector;

[0036] 2. Start power pump 2 15 and power pump 3 19, open stop valve 1 14 and stop valve 2 18, the lubricating oil is atomized by the oil atomizer and enters the pipeline, and then fully mixed with the refrigerant and enters the working fluid inlet and the ejection fluid inlet of the transparent ejector 4. The two fluids are fully mixed in the mixing chamber, and after passing through the diffusion chamber, they overcome the ejector outlet pressure and leave the ejector; use a high-speed camera 36 to shoot the flow field and oil droplet distribution of the ejector mixing section, and compare and analyze the pictures taken before adding the oil droplets. The mixed refrigerant is filtered out of 99% of the lubricating oil by the oil filter 5, and then the remaining lubricating oil is filtered out by the distillation device 6;

[0037] 3. The amount of lubricating oil is controlled by the opening of the stop valve 14 and the stop valve 2 18, the volume flow rate of the lubricating oil entering the pipeline is detected by the volume flow measuring tank 16 and the volume flow measuring tank 2 20, and the specific gravity of the lubricating oil in the refrigerant at the ejector outlet is detected by the oil content detection device 30;

[0038] 4. (Lubricating oil volume flow measurement) After the experimental device runs stably, read the oil volume monitoring meter scale, count as V1, start the atomization device, wait for the device to run for 20 minutes, read the oil volume monitoring meter scale, count as V2, the lubricating oil volume flow is

[0039] 5. If Figure 2As shown in the figure, (lubricating oil specific gravity determination) lubricating oil detection device; record that when the oil tank 41 is empty, the mass is M1, connect the first interface and the second interface of the three-way valve 42, keep the valve 1 38 closed, start the vacuum pump 44, evacuate the oil tank 41 and the connecting pipeline for 20 minutes, then close the valve 2 38 and the three-way valve 2 42; after the system is started smoothly, then open the valve 1 38 and the valve 2 40 in turn, and the refrigerant enters the oil tank 41. After working for about 20 minutes to maintain a stable state, close the valve 1 38 and the valve 2 40 in turn. 240, the oil tank 41 containing the sample is recorded as M2; open valve 240 and connect the second interface and the third interface of three-way valve 242, the refrigerant leaves the oil tank 41 and enters the external air. After 20 minutes, connect the first interface and the second interface of three-way valve 242, start the vacuum pump 44, and extract the remaining small amount of refrigerant from the oil tank 41 to ensure that only lubricating oil remains in the tank. At this time, the lubricating oil and the oil tank 41 are recorded as M3; the weight difference between M2 and M3 is the mass of the extracted refrigerant, and the difference between M3 and M1 is the mass of the lubricating oil. The mass of the lubricating oil of the system can then be calculated based on the above data. According to the weight difference, the extracted refrigerant and lubricating oil are injected into the system according to the pre-set working conditions. This device is used to measure the content of lubricating oil in the refrigerant of the pipeline at the outlet of the transparent ejector. The valve 240, the oil tank 41, the three-way valve 243 and the related pipelines can be easily disassembled through the quick connector 139 and the quick connector 243 for overall weighing.

[0040] The specific gravity of oil is

[0041] Step 3: End of the experiment.

[0042] After the experiment, turn off the light source 37 and the high-speed camera 36; turn off the generator 3, and after the temperature of the generator 3 drops to a suitable temperature, cut off the power supply of the power pump 1, and finally cut off the water circulation and the power supply of the detection instrument. Check whether the switches and valves of water, electricity, and steam are all turned off.

[0043] A multifunctional injector experimental test and research device in the present invention is provided with a visual transparent injector, which is beneficial to the verification of the design, facilitates the intuitive observation of the state of the injector, and ensures the performance of the injector; by providing a complex fluid test unit, it is possible to detect the influence of complex fluids on the injector, and further ensure the performance of the injector.

[0044] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0045] Although this article uses more reference numerals in the figure: 1, power pump 1; 2, liquid storage tank 1; 3, generator; 4, transparent ejector; 5, oil filter; 6, distillator; 7, condenser; 8, three-way valve 1; 9, throttle valve; 10, liquid storage tank 2; 11, evaporator; 12, oil storage tank; 13, fluorescent agent tank; 14, stop valve 1; 15, power pump 2; 16, volume flow measurement tank 1; 17, atomizer 1; 18, stop valve 2; 19, power pump 3; 20, volume flow measurement tank 2; 21, atomizer 2; 22, data acquisition device; 23, mass flow meter 1 ; 24, pressure sensor 1; 25, temperature sensor 1; 27, pressure sensor 2; 28, pressure sensor 3; 29, pressure sensor 4; 30, oil content measuring device; 31, pressure sensor 5; 32, temperature sensor 4; 33, mass flow meter 2; 34, pressure sensor 6; 35, temperature sensor 3; 36, high-speed camera; 37, light source; 38, valve 1; 39, quick connector 1; 40, valve 2; 41, oil tank; 42, three-way valve 2; 43, quick connector 2; 44, vacuum pump, etc., but the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A multifunctional ejector experimental test research device, characterized in that: The invention comprises an injection refrigeration unit, a complex fluid testing unit and a data acquisition unit. The injection refrigeration unit comprises a power pump (1), a liquid storage tank (2), a generator (3), a transparent ejector (4), a rectifier (6), a condenser (7), a liquid storage tank (10) and an evaporator (11) which are connected in sequence. The outlet of the generator (3) is connected to the working fluid inlet of the transparent ejector (4). The outlet of the evaporator (11) is connected to the injection fluid inlet of the transparent ejector (4). The refrigerant of the condenser (7) is divided into two paths after flowing out. One path enters the liquid storage tank (2) through the power pump (1), and the other path enters the liquid storage tank (10) through the throttle valve (9). The complex fluid testing unit comprises an oil storage tank (12) having four interfaces. The first interface of the oil storage tank (12) is connected to the first interface of the oil storage tank (12). The rectifier (6), the second interface of the oil storage tank (12) is connected to the pipeline between the evaporator (11) and the transparent injector (4), the second interface of the oil storage tank (12) is connected in sequence to a stop valve (14), a power pump (15) and an atomizer (17), the outlet of the atomizer (17) is connected to the pipeline between the evaporator (11) and the transparent injector (4), the fourth interface of the oil storage tank (12) is connected to the pipeline between the evaporator (11) and the transparent injector (4), the fourth interface of the oil storage tank (12) is connected to the pipeline between the evaporator (11) and the transparent injector (4), the second interface of the oil storage tank (12) is connected in sequence to a stop valve (18), a power pump (19) and an atomizer (21), the outlet of the atomizer (21) is connected to the pipeline between the generator (3) and the transparent injector (4).

2. A multifunctional ejector experimental test and research device according to claim 1, characterized in that: The complex fluid testing unit further comprises an oil filter (5), and the third interface of the oil storage tank (12) is connected to the oil filter (5).

3. A multifunctional ejector experimental test and research device according to claim 1, characterized in that: The complex fluid testing unit also includes a volume flow measuring tank one (16) and a volume flow measuring tank two (20), wherein the volume flow measuring tank one (16) is located between the power pump two (15) and the atomizer one (17), and the volume flow measuring tank two (20) is located between the power pump three (19) and the atomizer two (21).

4. The multifunctional ejector experimental test and research device according to claim 1, characterized in that: The complex fluid testing unit also includes a fluorescent agent tank (13). The fluorescent agent in the fluorescent agent tank (13) leaves and enters the stop valve (14). After being fully mixed with the lubricating oil, it enters the atomizer (17) to be atomized into small particles and then flows to the pipelines in the evaporator (11) and the transparent injector (4). After being mixed with the refrigerant in the pipeline, it enters the injection fluid inlet of the transparent injector (4).

5. The multifunctional ejector experimental test and research device according to claim 2, characterized in that: The data acquisition unit comprises a data acquisition device (22), a high-speed camera (36), a light source (37), a first test device for measuring the pipeline between the generator (3) and the transparent injector (4), a second test device for measuring the pipeline between the transparent injector (4) and the evaporator (11), a third test device for measuring the pipeline between the transparent injector (4) and the oil filter (5), and a fourth test device for measuring the transparent injector (4); the fourth test device, the third test device, the second test device, the first test device, the high-speed camera (36), the light source (37) and the data acquisition device (22) are respectively connected via signals.

6. A multifunctional ejector experimental test and research device according to claim 5, characterized in that: The test device 1 includes a mass flow meter 1 (23), a pressure sensor 1 (24) and a temperature sensor 1 (25); the test device 2 includes a mass flow meter 2 (33), a pressure sensor 6 (34) and a temperature sensor 3 (35); the test device 3 includes an oil content measuring device (30), a pressure sensor 5 (31) and a temperature sensor 4 (32); the test device 4 includes a pressure sensor 2 (27), a pressure sensor 3 (28) and a pressure sensor 4 (29).

7. The multifunctional ejector experimental test and research device according to claim 5, characterized in that: The light source (37) is an LED lamp.

8. The multifunctional ejector experimental test and research device according to claim 5, characterized in that: The high-speed camera (36) captures images at a fixed frame rate and is signal-connected to the data acquisition device (22).

Images