WO2021185095A1 - 一种制冷剂传输方法、装置及制冷剂处理设备 - Google Patents

一种制冷剂传输方法、装置及制冷剂处理设备 Download PDF

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Publication number
WO2021185095A1
WO2021185095A1 PCT/CN2021/079165 CN2021079165W WO2021185095A1 WO 2021185095 A1 WO2021185095 A1 WO 2021185095A1 CN 2021079165 W CN2021079165 W CN 2021079165W WO 2021185095 A1 WO2021185095 A1 WO 2021185095A1
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Prior art keywords
refrigerant
temperature
air conditioner
pipeline
automobile air
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PCT/CN2021/079165
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English (en)
French (fr)
Inventor
王维林
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Autel Intelligent Technology Corp Ltd
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Autel Intelligent Technology Corp Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/003—Control issues for charging or collecting refrigerant to or from a cycle

Definitions

  • This application relates to the technical field of automobile intelligent control, and in particular to a refrigerant transmission method, device and refrigerant processing equipment.
  • Refrigerants also known as refrigerants
  • refrigerants are usually used in air-conditioning systems, such as car air-conditioners, because of their ability to absorb heat and become gas, but also easily dissipate heat and become liquid.
  • Refrigerant recovery equipment is usually required before car air-conditioning is repaired.
  • the refrigerant in the air conditioner is recovered to prevent the leakage of the refrigerant from causing environmental pollution.
  • the refrigerant filling equipment is used to fill the automobile air conditioner with refrigerant, so that the automobile air conditioner can achieve cooling.
  • the inventor found that the above related technologies have at least the following problems: the storage tank used to store the refrigerant is heavy, usually in the order of kilograms, and the transmission accuracy of the refrigerant is in the tens of tens. In this order of magnitude, the existing refrigerant processing equipment cannot guarantee high precision within this range while improving the transmission efficiency of refrigerant.
  • the purpose of the present invention is to provide a refrigerant transmission method, device and refrigerant processing equipment with better transmission accuracy and higher transmission efficiency.
  • an embodiment of the present invention provides a refrigerant transmission method, which is applied to a refrigerant processing device, and the refrigerant processing device is connected to an automobile through a first pipeline and a second pipeline, respectively.
  • the pipe diameter of the first pipeline is greater than the pipe diameter of the second pipeline, and the method includes:
  • the transfer amount of the refrigerant between the automobile air conditioner and the refrigerant processing equipment is controlled.
  • the first threshold is determined according to the total weight of the refrigerant contained in the car air conditioner.
  • the step of obtaining the ambient heat temperature in the automobile air conditioner further includes:
  • the ambient heat temperature in the automobile air conditioner is calculated.
  • the calculation formula for calculating the ambient heat temperature in the automobile air conditioner is as follows:
  • SH represents the ambient heat temperature
  • Tsat represents the gas temperature
  • Tboing represents the evaporation temperature
  • the step of obtaining the ambient heat temperature in the automobile air conditioner further includes:
  • the ambient heat temperature in the automobile air conditioner is calculated.
  • the calculation formula for calculating the ambient heat temperature in the automobile air conditioner is as follows:
  • SC represents the ambient heat temperature
  • Tliq represents the liquid temperature
  • Tcooling represents the condensation temperature
  • the refrigerant processing equipment further includes: a first temperature and humidity sensor for installing at the air inlet of the copper plate placed inside the evaporator, and a first temperature and humidity sensor for installing at the outside of the evaporator.
  • the second temperature and humidity sensor at the air inlet of the copper plate,
  • the cooling effect temperature of the refrigerant in the automobile air conditioner is calculated.
  • the calculation formula for calculating the cooling effect temperature in the automobile air conditioner is as follows:
  • TSH represents the cooling effect temperature
  • IDWB represents the indoor wet bulb temperature
  • ODDB represents the outdoor dry bulb temperature
  • the step of controlling the transfer amount of the refrigerant between the automobile air conditioner and the refrigerant processing equipment according to the comparison result of the ambient heat temperature and the cooling effect temperature further include:
  • the transfer amount of the refrigerant is controlled multiple times according to the difference between the ambient heat temperature and the cooling effect temperature, until the difference between the ambient heat temperature and the cooling effect temperature is within a preset range.
  • the transmission amount is proportional to the difference.
  • an embodiment of the present invention provides a refrigerant transmission device, which is applied to a refrigerant processing device, and the refrigerant processing device is connected to a vehicle through a first pipeline and a second pipeline, respectively.
  • the diameter of the first pipeline is greater than the diameter of the second pipeline, and the device includes:
  • the first control module is used to control the refrigerant to be transmitted between the automobile air conditioner and the refrigerant processing equipment through the first pipeline, and to measure the weight change of the refrigerant in the refrigerant processing equipment ;
  • a switching module configured to switch the refrigerant to the second pipeline for transmission when the weight change of the refrigerant reaches a first threshold
  • An obtaining module which is used to obtain the ambient heat temperature and the cooling effect temperature in the automobile air conditioner
  • the second control module is configured to control the transfer amount of the refrigerant between the automobile air conditioner and the refrigerant processing equipment according to the comparison result of the ambient heat temperature and the cooling effect temperature.
  • an embodiment of the present invention provides a refrigerant processing equipment, including:
  • Low-pressure pipeline one end of which is used to connect with the low-pressure pipe service port of the automobile air conditioner;
  • a high-pressure pipeline one end of which is used to connect with the high-pressure pipe service port of the automobile air conditioner;
  • Storage tank used to store refrigerant
  • a first pipeline one end of which is connected to the storage tank, and the other end is connected to the other end of the low-pressure pipeline or the other end of the high-pressure pipeline;
  • the second pipeline has one end connected to the storage tank, and the other end is connected to the other end of the low pressure pipeline or the other end of the high pressure pipeline, and the diameter of the first pipeline is larger than that of the first pipeline. Diameter of the second pipeline;
  • the first solenoid valve is used to control the on-off of the first pipeline
  • the second solenoid valve is used to control the on-off of the second pipeline
  • the first air pressure sensor is arranged at one end of the low-pressure pipeline close to the first solenoid valve and the second solenoid valve;
  • the second air pressure sensor is arranged at one end of the high-pressure pipeline close to the first solenoid valve and the second solenoid valve;
  • the first temperature sensor is used to be installed between the evaporator and the compressor of the automobile air conditioner and close to the service port of the low pressure pipe;
  • the second temperature sensor is used to be installed between the compressor of the automobile air conditioner and the desiccant and close to the service port of the high-pressure pipe;
  • the first temperature and humidity sensor is used for the copper plate air inlet installed inside the evaporator;
  • the second temperature and humidity sensor is used for the copper plate air inlet installed on the outside of the evaporator;
  • At least one processor which is connected to the electronic scale, the first solenoid valve, the second solenoid valve, the first air pressure sensor, the second air pressure sensor, the first temperature sensor, and the first Two temperature sensors, the first temperature and humidity sensor and the second temperature and humidity sensor are connected; and,
  • a memory communicatively connected with the at least one processor; wherein,
  • the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the method described in the first aspect above.
  • embodiments of the present invention also provide a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to make a computer execute The method described in the first aspect above.
  • embodiments of the present invention also provide a computer program product.
  • the computer program product includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions.
  • the program instructions When the program instructions are executed by a computer, the computer executes the method described in the first aspect above.
  • the beneficial effect of the present invention is: different from the situation of the prior art, the embodiment of the present invention provides a refrigerant transmission method, which is applied to refrigerant processing equipment, and the method first controls the refrigerant to pass through
  • the first pipeline is transmitted between the automobile air conditioner and the refrigerant processing equipment, and measures the weight change of the refrigerant in the refrigerant processing equipment, and the weight change of the refrigerant reaches the first
  • the refrigerant is switched to the second pipeline for transmission, and then the ambient heat temperature and the cooling effect temperature in the automobile air conditioner are obtained, and the difference between the ambient heat temperature and the cooling effect temperature is obtained.
  • the transfer amount of the refrigerant between the automobile air conditioner and the refrigerant processing equipment is controlled, and the refrigerant transfer method provided by the embodiment of the present invention can transfer the refrigerant with high precision and efficiency.
  • FIG. 1 is a schematic diagram of an application scenario of a refrigerant transmission method provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of another application scenario of the refrigerant transmission method provided by the embodiment of the present invention.
  • Figure 3 is a flowchart of a refrigerant transmission method provided by an embodiment of the present invention.
  • FIG. 4 is a sub-flow chart of step 120 in the method shown in FIG. 3;
  • FIG. 5 is another sub-flow chart of step 120 in the method shown in FIG. 3;
  • FIG. 6 is a sub-flow chart of step 130 in the method shown in FIG. 3;
  • Figure 7 is a schematic structural diagram of a refrigerant transmission device provided by an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of the hardware structure of a refrigerant processing equipment provided by an embodiment of the present invention.
  • the filling accuracy of automobile air-conditioning refrigerant needs to be within ⁇ 15 grams.
  • the refrigerant is stored in the storage tank of the refrigerant processing equipment, and the total weight is tens of kilograms.
  • Sensor technology is difficult to control the weighing accuracy of a few grams in this range, and some refrigerant will remain in the pipeline between the refrigerant processing equipment and the car air conditioner, which will also affect the filling accuracy.
  • FIG. 1 shows a schematic diagram of one application environment of a refrigerant transmission method provided by an embodiment of the present invention.
  • the application environment includes: a refrigerant processing device 10 and an automobile air conditioner 20.
  • the refrigerant processing equipment 10 is connected to the automobile air conditioner 20 through a low-pressure pipeline 11a.
  • the application scenario shown in FIG. 1 is applied to a situation where the refrigerant processing device 10 fills the automobile air conditioner 20 with refrigerant.
  • the refrigerant processing equipment 10 is a device, equipment, or machine capable of filling the automobile air conditioner 20 with refrigerant.
  • the refrigerant processing equipment 10 further includes a storage tank 12, an electronic scale 13, a first solenoid valve 14 and a second solenoid valve 15.
  • the storage tank 12 is used to store refrigerant
  • the electronic scale 13 is used to weigh the storage tank 12 to determine the remaining amount of refrigerant in the storage tank 12.
  • the electronic scale 13 can also be replaced with a measuring instrument or device such as a liquid meter that detects quality or changes in quality.
  • the refrigerant processing equipment 10 is also provided with a first pipeline 16 and a second pipeline 17, both ends of the first pipeline 16 and the second pipeline 17 are connected to the storage tank 12, and the other One end is connected to the low-pressure pipe 11a, and only the first pipe 16 or the second pipe 17 is connected to the low-pressure pipe 11a during operation.
  • the first solenoid valve 14 is used to control the on-off of the first pipeline 16.
  • the refrigerant processing device 10 serves the refrigerant through the first pipeline 16
  • the automobile air conditioner 20 is filled with refrigerant;
  • the second solenoid valve 15 is used to control the on-off of the second pipeline 17, and when the second solenoid valve 15 is opened, the refrigerant processing device 10 passes through the The second pipeline 17 fills the automobile air conditioner 20 with refrigerant.
  • the filling efficiency of the first pipeline 16 is higher than that of the second pipeline 17.
  • the radius of the first pipeline 16 is larger than the radius of the second pipeline 17.
  • the first pipeline 16 is used to open when the automobile air conditioner 20 needs to be filled with a large amount of refrigerant, and at the same time, the second pipeline 17 needs to be closed.
  • the second pipeline 17 is used to open when the automobile air conditioner 20 needs to control the filling amount of the refrigerant with high precision, and at the same time, the first pipeline 16 needs to be closed.
  • the refrigerant processing equipment 10 also includes a first air pressure sensor P1, which is arranged at one end of the low-pressure pipeline 11a close to the first solenoid valve 14 and the second solenoid valve 15 for To detect the pressure of the refrigerant output from the storage tank 12 in the low-pressure pipe 11a.
  • the first air pressure sensor P1 is arranged in the low-pressure pipeline 11a to obtain more accurate air pressure data.
  • the refrigerant processing equipment 10 can also be used to recover the refrigerant in the automobile air conditioner 20.
  • FIG. 2 shows an application scenario of the refrigerant processing device 10 recovering the refrigerant in the automobile air conditioner 20.
  • the application scenario is different from the application scenario shown in FIG. 1 in that the refrigeration
  • the refrigerant processing device 10 recovers refrigerant from the automobile air conditioner 20.
  • the high-pressure pipeline 11b and the low-pressure pipeline 11a may be the same pipeline, or may be two separate pipelines set independently.
  • the high-pressure pipeline 11b should be the same as the above-mentioned low-pressure pipeline 11a, and is provided with the first pipeline 16 and the first pipeline 11a.
  • the recovery pipeline, solenoid valve and second air pressure sensor P2 corresponding to the second pipeline 17 are used to control and monitor the efficiency of the recovered refrigerant.
  • the automobile air conditioner 20 also includes: an evaporator 23, a condenser 24, an expansion valve 25, a compressor 26, and a desiccant 27.
  • the evaporator 23 is used to exchange heat between the liquid refrigerant and the air inside the car to vaporize the refrigerant to achieve the purpose of cooling the car interior;
  • the condenser 24 is used to combine the gaseous refrigerant with the air inside the car.
  • the air outside the automobile exchanges heat to liquefy the refrigerant so that the liquefied refrigerant can be circulated in the automobile air conditioner 20 for use.
  • the expansion valve 25 is installed between the evaporator 23 and the condenser 24 and is close to the evaporator 23, and is used to adjust the flow rate of refrigerant entering the evaporator 23 so that the refrigerant can flow in the evaporator 23. Fully vaporized.
  • the compressor 26 is arranged between the condenser 24 and the expansion valve 25, and is used to pressurize the refrigerant vaporized by the evaporator 23, so that the refrigerant can obtain power and be used in all areas.
  • the car air conditioner 20 is internally circulated.
  • the low-pressure pipe service port 21 is arranged on the pipeline between the expansion valve 25 and the compressor 26 and is close to the expansion valve 25.
  • the desiccant 27 is used to absorb moisture and impurities in the refrigerant.
  • the high-pressure pipe service port 22 is arranged on the pipeline between the expansion valve 25 and the desiccant 27 and is close to the expansion valve 25.
  • the evaporator 23 is provided with a copper disk coiled by a copper tube, and the copper disk is partly placed inside the evaporator 23, partly placed outside the evaporator 23, and placed outside the evaporator 23 The copper plate is in contact with the air inside the car for heat exchange.
  • the refrigerant processing device 10 is also provided with a first temperature sensor T1, a second temperature sensor T2, a first temperature and humidity sensor IDWB, and a second temperature and humidity sensor ODDB.
  • the first temperature sensor T1 is installed between the evaporator 23 and the compressor 26 and is close to the low-pressure pipe service port 21, and is used to measure the gas temperature of the refrigerant evaporated through the evaporator 23.
  • the first temperature and humidity sensor IDWB is installed on the copper plate inside the evaporator 23 and is close to the air inlet of the copper plate, and is used to measure the indoor wet bulb temperature of the automobile air conditioner 20.
  • the second temperature and humidity sensor ODDB is installed on the copper plate outside the evaporator 23 and is close to the air inlet of the copper plate, and is used to measure the outdoor dry bulb temperature of the automobile air conditioner 20.
  • the second temperature and humidity sensor ODDB is installed one foot away from the air inlet of the copper plate, and should be kept away from sunlight and placed in a dark place.
  • the refrigerant processing device 10 when the refrigerant processing device 10 is used to recover refrigerant, the refrigerant processing device 10 should also be provided with a second temperature sensor T2, and the second temperature sensor T2 should be provided at the expansion Between the valve 25 and the desiccant 27 and close to the high-pressure pipe service port 22, it is used to measure the condensation temperature of the refrigerant after being condensed by the condenser 24.
  • the first solenoid valve 14 when the refrigerant processing device 10 is filled with refrigerant, the first solenoid valve 14 is first opened, and the refrigerant quickly fills the automobile air conditioner 20 through the first pipeline 16 with refrigeration. When the filling amount is almost reached, the first solenoid valve 14 is closed and the second solenoid valve 15 is opened. . After the refrigerant is injected into the automobile air conditioner 20 through the low-pressure pipe service port 21, it passes through the compressor 26, the condenser 27, the desiccant 27, the expansion valve 25, and the The evaporator 23 and the expansion valve 25 pass through the compressor 26 again to form a refrigeration cycle.
  • the refrigerant processing equipment 10 when the refrigerant processing equipment 10 recovers refrigerant, it is connected to the high-pressure pipe service port 22 through the high-pressure pipe 11b, the first solenoid valve 14 is opened, and the refrigerant passes through the first pipe.
  • the road 16 quickly recovers the refrigerant from the automobile air conditioner 20, or, when the second solenoid valve 15 is opened, the refrigerant slowly recovers the refrigerant through the second pipe 17, so as to realize the recovery of the refrigerant.
  • the refrigerant processing equipment 10 may also only implement one of the filling and recovery.
  • the refrigerant transmission method provided by the embodiment of the present invention is generally executed by the above-mentioned refrigerant processing device 10. Accordingly, the refrigerant transmission device is generally provided on the refrigerant processing device 10.
  • the embodiment of the present invention provides a refrigerant transmission method, which can be executed by the above-mentioned refrigerant processing device 10, and the refrigerant processing device is respectively connected to the automobile air conditioner through the above-mentioned first pipeline and the second pipeline.
  • the diameter of the first pipeline is greater than the diameter of the second pipeline, please refer to Figure 3, which shows a flow chart of a refrigerant transmission method provided by an embodiment of the present invention, the method includes but Not limited to the following steps:
  • Step 110 Control the refrigerant to be transferred between the automobile air conditioner and the refrigerant processing equipment through the first pipeline, and measure the weight change of the refrigerant in the refrigerant processing equipment.
  • the refrigerant processing device 10 can be activated through the first solenoid valve 14 as described above, so that the refrigerant processing device 10 passes through the low-pressure pipe 11a and the low-pressure pipe.
  • the service port 21 quickly fills the car air conditioner with refrigerant, or quickly recovers the refrigerant from the car air conditioner through the high-pressure pipe 11b and the high-pressure pipe service port 22.
  • the compressor 26 in the automobile air conditioner is activated to make the refrigerant begin to circulate and cool in the automobile air conditioner, so that the refrigerant can be evenly charged into the automobile air conditioner or be fully recovered.
  • the weight change of the refrigerant in the storage tank can be measured by a weight measuring instrument such as the electronic scale 13 mentioned above. Specifically, the value of the weight measured by the electronic scale before and after the refrigerant transmission is subtracted is the value of the weight change.
  • Step 120 When the weight change of the refrigerant reaches a first threshold, switch the refrigerant to the second pipeline for transmission.
  • the vehicle air conditioner After the vehicle air conditioner starts to circulate for a certain period of time, after the weight change of the refrigerant reaches the first threshold value, for example, when the refrigerant is filled, the refrigerant in the storage tank is reduced to the first threshold value, or the refrigerant in the storage tank is reduced to the first threshold value.
  • the first solenoid valve 14 When the refrigerant in the storage tank rises to the first threshold, the first solenoid valve 14 is closed and the second solenoid valve 15 is opened, so that the refrigerant is switched to the second pipeline 17 Slow transmission.
  • the first threshold is determined according to the total weight of the refrigerant contained in the automobile air conditioner. For example, when the total weight of the refrigerant contained in the automobile air conditioner is 550 grams, the first threshold may be set to 500 grams.
  • some car models can know the total weight of the refrigerant contained in the car air conditioner. For example, the value of the total weight is marked on the car air conditioner and its surroundings, which can be seen by the refrigeration processing operator, or stored in the vehicle
  • the electronic control equipment can be read by the refrigerant processing equipment, or the corresponding relationship between the vehicle model and the total weight of the refrigerant is pre-stored in the refrigerant processing equipment.
  • the corresponding total weight can be determined according to the vehicle model, and the total weight can be determined according to the obtained total weight
  • the first threshold for example, the first threshold is 95% of the total weight; some models cannot know the total weight of the refrigerant contained in the air conditioner, and the refrigerant processing equipment can estimate the first threshold, such as according to the size of the vehicle or the known air conditioner Estimate the size, etc., or set the first threshold to a constant value, or calculate the first threshold based on the correspondence between the pre-stored vehicle model and the total weight of the refrigerant.
  • the use of a large pipe diameter pipeline to transmit the refrigerant can ensure high efficiency transmission of the refrigerant, and after the first threshold value is reached, a small pipe diameter is used.
  • Optical path transmission of refrigerant can ensure high-precision filling or recovery of refrigerant.
  • Step 130 Obtain the ambient heat temperature and the cooling effect temperature in the automobile air conditioner.
  • the working state refers to the current working state of the automobile air conditioner in cooling
  • the working environment refers to the current ambient temperature inside and outside the automobile air conditioner.
  • the evaporator can be measured by measuring the copper inside and outside the automobile air conditioner.
  • the temperature of the tube is determined, and the outside of the car air conditioner specifically refers to the temperature inside the car.
  • Step 140 Control the transfer amount of the refrigerant between the automobile air conditioner and the refrigerant processing equipment according to the comparison result of the ambient heat temperature and the cooling effect temperature.
  • the transfer volume can be adjusted and controlled multiple times according to the comparison result of the ambient heat temperature and the cooling effect temperature until the ambient heat temperature is approximately the same as the cooling effect temperature.
  • approximately the same refers to the difference between the environmental heat temperature and the cooling effect
  • the preset range of the difference refers to approximately the same range.
  • the determination of the transmission volume can be proportional to the difference.
  • the difference can be positive or negative. A positive difference means that the car air conditioner needs to be refilled, and a negative difference means that it needs to be recycled from the car air conditioner. .
  • the refrigerant processing equipment can only achieve one operation of refilling or recycling, that is, the refrigerant processing equipment needs to ensure this difference when refilling the car air conditioner.
  • the value is always positive, indicating that the car air conditioner has not been filled. If the difference is negative during the filling process, it means that the car air conditioner has been filled and cannot be filled to prevent damage to the car. air conditioner.
  • Refrigerant processing equipment needs to control the transfer volume (filling volume) of refrigerant during the filling process to ensure that the difference value obtained next time does not appear negative; if the difference value obtained next time is within the preset range, Or the negative value of the difference is within the allowable range of error, then the filling operation of the refrigerant processing equipment is completed and the filling is stopped. In the same way, the refrigerant processing equipment needs to ensure that the difference is always negative or zero when recovering refrigerant from the car air conditioner, and the difference is positive and must be within the error tolerance range.
  • the operation method is the same as the filling process, so I won't repeat it here.
  • the ambient heat temperature and the cooling effect temperature After obtaining the ambient heat temperature and the cooling effect temperature, it is determined whether the ambient heat temperature and the cooling effect temperature are consistent. If they are not consistent, the difference between the ambient heat temperature and the cooling effect temperature is determined to It is determined whether the refrigerant reaches the total weight of the refrigerant contained in the automobile air conditioner during filling, that is, whether the refrigerant in the automobile air conditioner reaches dynamic equilibrium, or whether the refrigerant is completely recovered.
  • An embodiment of the present invention provides a refrigerant transmission method, which is applied to a refrigerant processing device.
  • the method first controls the refrigerant to be transmitted between the automobile air conditioner and the refrigerant processing device through the first pipeline. And measure the weight change of the refrigerant in the refrigerant processing equipment, and when the weight change of the refrigerant reaches a first threshold, switch the refrigerant to the second pipeline for transmission, and then obtain The ambient heat temperature and the cooling effect temperature in the automobile air conditioner, and according to the comparison result of the ambient heat temperature and the cooling effect temperature, the refrigerant is controlled between the automobile air conditioner and the refrigerant processing equipment
  • the refrigerant transmission method provided by the embodiment of the present invention can transmit the refrigerant with high precision and high efficiency.
  • the ambient heat temperature in the car air conditioner can be determined by the heat temperature (SH, SuperHeat) taken away from the evaporator by the refrigerant.
  • SH heat temperature
  • SuperHeat heat temperature taken away from the evaporator by the refrigerant.
  • FIG. 4 shows step 120 in the method shown in FIG. 3. Based on the method shown in FIG. 3, the step 120 further includes:
  • Step 121a Detect the first pressure of the low-pressure pipeline of the refrigerant processing equipment.
  • the first pressure sensor P1 as shown in the above application scenario may be used to detect the first pressure of the low-pressure pipeline connected to the automobile air conditioner.
  • the first pressure sensor P1 is arranged in the pipeline.
  • Step 122a Determine the evaporation temperature of the refrigerant under the first pressure according to the first pressure.
  • the evaporation pressure and the evaporation temperature have a corresponding relationship.
  • the evaporation temperature of the refrigerant at the first pressure can be determined according to the low pressure pressure. Specifically, it is necessary to determine the relationship table or relationship between the evaporation pressure and the evaporation temperature of the refrigerant according to the chemical composition of the refrigerant, so as to query and obtain the evaporation temperature of the refrigerant at the first pressure after the first pressure is determined.
  • Step 123a Detect the gas temperature of the gas formed after the refrigerant in the automobile air conditioner is evaporated through the evaporator.
  • the gas temperature of the gas formed after the refrigerant evaporates through the evaporator is determined by the first temperature sensor T1 as described in the above application scenario.
  • the first temperature sensor T1 is arranged in the pipeline.
  • Step 124a Calculate the ambient heat temperature in the automobile air conditioner according to the evaporation temperature and the gas temperature.
  • the temperature of heat transferred to the environment when the refrigerant is converted from liquid to gas through the evaporator can be determined, wherein the calculation of the refrigeration in the car air conditioner
  • the formula for calculating the temperature of the heat taken away after passing through the evaporator of the car air conditioner is as follows:
  • SH represents the ambient heat temperature
  • Tsat represents the gas temperature
  • Tboing represents the evaporation temperature
  • the ambient heat temperature in the car air conditioner can also be determined by the heat temperature (SC, Subcooling) taken away from the condenser by the refrigerant.
  • SC heat temperature
  • FIG. 5 shows the steps in the method shown in FIG. 3.
  • Another sub-flow chart of 120 is based on the method shown in FIG. 3, and the step 120 further includes:
  • Step 121b Detect the second pressure of the high-pressure pipeline of the refrigerant processing equipment.
  • the second pressure sensor P2 as shown in the above application scenario may be used to detect the second pressure of the high-pressure pipeline connected to the automobile air conditioner.
  • the second pressure sensor P2 is arranged in the pipeline.
  • Step 122b Determine the condensation temperature of the refrigerant at the second pressure according to the second pressure.
  • the condensation pressure and the condensation temperature have a corresponding relationship.
  • the condensation temperature of the refrigerant at the second pressure can be determined according to the second pressure. Specifically, it is necessary to determine the relationship table or relationship between the condensation pressure and the condensation temperature of the refrigerant according to the chemical composition of the refrigerant, so as to query and obtain the condensation temperature of the refrigerant at the second pressure after the second pressure is determined.
  • Step 123b Detect the liquid temperature of the liquid formed after the refrigerant in the automobile air conditioner is condensed by the condenser.
  • the liquid temperature of the liquid formed after the refrigerant is condensed by the condenser is determined by the second temperature sensor T2 as described in the above application scenario.
  • the second temperature sensor T2 is arranged in the pipeline.
  • Step 124b Calculate the ambient heat temperature in the automobile air conditioner according to the condensation temperature and the liquid temperature.
  • the temperature of the heat in the environment absorbed when the refrigerant is converted from gas to liquid through the condenser can be determined, wherein the calculation of the environment in the car air conditioner
  • the calculation formula of heat temperature is as follows:
  • SC represents the ambient heat temperature
  • Tliq represents the liquid temperature
  • Tcooling represents the condensation temperature
  • the refrigerant processing equipment further includes: a first temperature and humidity sensor for installing at the air inlet of the copper plate placed inside the evaporator, and a first temperature and humidity sensor for installing at the outside of the evaporator.
  • a first temperature and humidity sensor for installing at the air inlet of the copper plate placed inside the evaporator
  • a first temperature and humidity sensor for installing at the outside of the evaporator.
  • FIG. 6 shows a sub-flow chart of step 130 in the method shown in FIG. 3, based on the method shown in FIG. 3, the step 130 further includes :
  • Step 131 Obtain the indoor wet bulb temperature of the automobile air conditioner through the first temperature and humidity sensor.
  • Step 132 Obtain the outdoor dry bulb temperature of the automobile air conditioner through the second temperature and humidity sensor.
  • Step 133 Calculate the cooling effect temperature of the refrigerant in the automobile air conditioner according to the indoor wet bulb temperature and the outdoor dry bulb temperature.
  • the cooling effect temperature in order to obtain the cooling effect temperature of the refrigerant in the automobile air conditioner, can be determined by detecting the temperature of the environment inside and outside the evaporator.
  • the temperature at the air inlet of the copper plate is taken as the indoor wet bulb temperature
  • the temperature at the air inlet of the copper plate placed outside the evaporator (and inside the car) is detected as the outdoor dry bulb temperature.
  • the cooling effect temperature can be several, and the calculation formula for calculating the cooling effect temperature in the automobile air conditioner is as follows:
  • TSH represents the cooling effect temperature
  • IDWB represents the indoor wet bulb temperature
  • ODDB represents the outdoor dry bulb temperature
  • the present invention provides an embodiment of a refrigerant transmission device.
  • FIG. 7 is a schematic structural diagram of a refrigerant transmission device provided by an embodiment of the present invention.
  • the refrigerant transmission device 200 is applied to refrigerant processing.
  • the refrigerant processing equipment is connected to the automobile air conditioner through the first pipeline and the second pipeline respectively, and the pipe diameter of the first pipeline is larger than the pipe diameter of the second pipeline, and the refrigerant transmission device 200 It includes: a first control module 210, a switching module 220, an acquisition module 230, and a second control module 240.
  • the first control module 210 is used to control the refrigerant to be transmitted between the automobile air conditioner and the refrigerant processing equipment through the first pipeline, and to measure the refrigerant in the refrigerant processing equipment. Weight change
  • the switching module 220 is configured to switch the refrigerant to the second pipeline for transmission when the weight change of the refrigerant reaches a first threshold;
  • the obtaining module 230 is used to obtain the ambient heat temperature and the cooling effect temperature in the automobile air conditioner;
  • the second control module 240 is configured to control the transfer amount of the refrigerant between the automobile air conditioner and the refrigerant processing equipment according to the comparison result of the ambient heat temperature and the cooling effect temperature.
  • the first threshold is determined according to the total weight of the refrigerant contained in the car air conditioner.
  • the acquisition module 230 is also used to detect the first pressure of the low-pressure pipeline of the refrigerant processing equipment;
  • the ambient heat temperature in the automobile air conditioner is calculated.
  • the calculation formula for calculating the ambient heat temperature in the automobile air conditioner is as follows:
  • SH represents the ambient heat temperature
  • Tsat represents the gas temperature
  • Tboing represents the evaporation temperature
  • the acquisition module 230 is also used to detect the second pressure of the high-pressure pipeline of the refrigerant processing equipment;
  • the ambient heat temperature in the automobile air conditioner is calculated.
  • the calculation formula for calculating the ambient heat temperature in the automobile air conditioner is as follows:
  • SC represents the ambient heat temperature
  • Tliq represents the liquid temperature
  • Tcooling represents the condensation temperature
  • the refrigerant processing equipment further includes: a first temperature and humidity sensor for installing at the air inlet of the copper plate placed inside the evaporator, and a first temperature and humidity sensor for installing at the outside of the evaporator.
  • the second temperature and humidity sensor at the air inlet of the copper plate,
  • the acquiring module 230 is further configured to acquire the indoor wet bulb temperature of the automobile air conditioner through the first temperature and humidity sensor;
  • the cooling effect temperature of the refrigerant in the automobile air conditioner is calculated.
  • the formula for calculating the cooling effect temperature in the automobile air conditioner is as follows:
  • TSH represents the cooling effect temperature
  • IDWB represents the indoor wet bulb temperature
  • ODDB represents the outdoor dry bulb temperature
  • the second control module 240 is further configured to control the transfer amount of the refrigerant multiple times according to the difference between the ambient heat temperature and the cooling effect temperature, until the ambient heat temperature and the cooling effect temperature are different.
  • the temperature difference of the cooling effect is within a preset range.
  • the transmission amount is proportional to the difference.
  • an embodiment of the present invention also provides a refrigerant processing device.
  • FIG. 8 shows the hardware structure of the refrigerant processing device capable of executing the refrigerant transmission method described in FIGS. 3 to 6.
  • the refrigerant processing device 10 may be the refrigerant processing device shown in FIG. 1 and/or FIG. 2.
  • the refrigerant processing equipment 10 includes:
  • the low-pressure pipeline 11a one end of which is used to connect with the low-pressure pipe service port of the automobile air conditioner;
  • the high-pressure pipeline 11b one end of which is used to connect with the high-pressure pipe service port of the automobile air conditioner;
  • the storage tank 12 is used to store refrigerant
  • the electronic scale 13 is used for weighing the weight of the storage tank
  • the first pipeline 16 has one end connected to the storage tank, and the other end is connected to the other end of the low-pressure pipeline or the other end of the high-pressure pipeline;
  • One end of the second pipeline 17 is connected to the storage tank, and the other end is connected to the other end of the low-pressure pipeline or the other end of the high-pressure pipeline, and the diameter of the first pipeline is larger than that of the The diameter of the second pipeline;
  • the first solenoid valve 14 is used to control the on-off of the first pipeline
  • the second solenoid valve 15 is used to control the on-off of the second pipeline
  • the first air pressure sensor P1 is arranged at one end of the low-pressure pipeline close to the first solenoid valve and the second solenoid valve;
  • the second air pressure sensor P2 is arranged at one end of the high-pressure pipeline close to the first solenoid valve and the second solenoid valve;
  • the first temperature sensor T1 is used to be installed between the evaporator and the compressor of the automobile air conditioner and close to the service port of the low pressure pipe;
  • the second temperature sensor T2 is used to be installed between the compressor and the desiccant of the automobile air conditioner and close to the service port of the high-pressure pipe;
  • the first temperature and humidity sensor IDWB is used for the copper plate air inlet installed inside the evaporator;
  • the second temperature and humidity sensor ODDB is used for the copper plate air inlet installed on the outside of the evaporator;
  • At least one processor 101 is connected to the electronic scale 13, the first solenoid valve 14, the second solenoid valve 15, the first air pressure sensor P1, the second air pressure sensor P2, the first temperature The sensor T1, the second temperature sensor T2, the first temperature and humidity sensor IDWB, and the second temperature and humidity sensor ODDB are connected; and, the memory 102 communicatively connected with the at least one processor 101, as shown in FIG. Take a processor 101 as an example.
  • the devices such as the first temperature sensor, the second temperature sensor, the first temperature and humidity sensor, and the second temperature and humidity sensor may be the devices shown in the application scenarios shown in FIG. 1 and/or FIG. 2 and the embodiments thereof, where No more details.
  • the memory 102 stores instructions that can be executed by the at least one processor 101, and the instructions are executed by the at least one processor 101, so that the at least one processor 101 can execute the instructions shown in FIGS. 3 to 6 above.
  • the processor 101 and the memory 102 may be connected through a bus or in other ways. In FIG. 8, the connection through a bus is taken as an example.
  • the memory 102 can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the programs corresponding to the refrigerant transmission method in the embodiments of the present application. Instructions/modules, for example, the various modules shown in FIG. 7.
  • the processor 101 executes various functional applications and data processing of the refrigerant processing equipment by running the non-volatile software programs, instructions, and modules stored in the memory 102, that is, implements the refrigerant transmission method shown in the above method embodiment .
  • the memory 102 may include a storage program area and a storage data area.
  • the storage program area may store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the refrigerant transmission device.
  • the memory 102 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the storage 102 may optionally include a storage remotely provided with respect to the processor 101, and these remote storages may be connected to the refrigerant transmission device through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the one or more modules are stored in the memory 102, and when executed by the one or more processors 101, the refrigerant transmission method in any of the foregoing method embodiments is executed, for example, the above-described FIG. 3 is executed. To the method steps of FIG. 6, the functions of each module and each unit in FIG. 7 are realized.
  • the embodiments of the present application also provide a non-volatile computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, for example,
  • the above-described method steps in FIGS. 3 to 6 implement the functions of each module in FIG. 7.
  • the embodiments of the present application also provide a computer program product, including a calculation program stored on a non-volatile computer-readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, cause all
  • the computer executes the refrigerant transmission method in any of the foregoing method embodiments, for example, executes the method steps in FIGS. 3 to 6 described above to realize the functions of the modules in FIG. 7.
  • An embodiment of the present invention provides a refrigerant transmission method, which is applied to a refrigerant processing device.
  • the method first controls the refrigerant to be transmitted between the automobile air conditioner and the refrigerant processing device through the first pipeline. And measure the weight change of the refrigerant in the refrigerant processing equipment, and when the weight change of the refrigerant reaches a first threshold, switch the refrigerant to the second pipeline for transmission, and then obtain The ambient heat temperature and the cooling effect temperature in the automobile air conditioner, and according to the comparison result of the ambient heat temperature and the cooling effect temperature, the refrigerant is controlled between the automobile air conditioner and the refrigerant processing equipment
  • the refrigerant transmission method provided by the embodiment of the present invention can transmit the refrigerant with high precision and high efficiency.
  • the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physically separate. Units can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each implementation manner can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware.
  • a person of ordinary skill in the art can understand that all or part of the processes in the methods of the foregoing embodiments can be implemented by instructing relevant hardware through a computer program.
  • the program can be stored in a computer readable storage medium. When executed, it may include the procedures of the above-mentioned method embodiments.
  • the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

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Abstract

本发明实施例涉及汽车智能控制技术领域，公开了一种制冷剂传输方法，应用于制冷剂处理设备，该方法首先控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化，在所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输，然后获取所述汽车空调中的环境热量温度和制冷效果温度，并根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量，本发明实施例提供的制冷剂传输方法能够高精度高效率地传输制冷剂。

Description

一种制冷剂传输方法、装置及制冷剂处理设备
本申请要求于2020年3月16日提交中国专利局、申请号为202010182796.2、申请名称为“一种制冷剂传输方法、装置及制冷剂处理设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及汽车智能控制技术领域，特别涉及一种制冷剂传输方法、装置及制冷剂处理设备。
背景技术
制冷剂，又称冷媒，因其容易吸热变成气体，又容易放热变成液体的特性，通常应用于空调系统中，例如汽车空调，汽车空调在维修之前，通常需要使用制冷剂回收设备回收空调中的制冷剂，以防止制冷剂泄露造成环境污染，在维修完成后，再使用制冷剂加注设备对汽车空调进行制冷剂加注，以使汽车空调能够实现制冷。
在实现本发明过程中，发明人发现以上相关技术中至少存在如下问题：用于存储制冷剂的存储罐的重量较大，通常是公斤量级的，而制冷剂的传输精度则是在几十克这个量级的，现有的制冷剂处理设备无法在此量程范围内保证高精度的同时，提高制冷剂的传输效率。
发明内容
针对现有技术的上述缺陷，本发明的目的是提供一种传输精度较好且传输效率较高的制冷剂传输方法、装置及制冷剂处理设备。
本发明的目的是通过如下技术方案实现的：
为解决上述技术问题，第一方面，本发明实施例中提供了一种制冷剂传输方法，应用于制冷剂处理设备，所述制冷剂处理设备通过第一管路和第二管路分别与汽车空调连接，所述第一管路的管径大于所述第二管路的管径，所述方法包括：
控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化；
当所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输；
获取所述汽车空调中的环境热量温度和制冷效果温度；
根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量。
在一些实施例中，所述第一阈值是根据汽车空调所容置的制冷剂的总重量确定的。
在一些实施例中，所述获取所述汽车空调中的环境热量温度的步骤，进一步包括：
检测所述制冷剂处理设备的低压管路的第一压力；
根据所述第一压力，确定所述制冷剂在所述第一压力下的蒸发温度；
检测所述汽车空调中的制冷剂经过所述蒸发器蒸发后形成的气体的气体温度；
根据所述蒸发温度和所述气体温度，计算所述汽车空调中的环境热量温度。
在一些实施例中，所述计算所述汽车空调中的环境热量温度的计算公式如下：
SH＝Tsat-Tboing
其中，SH表示所述环境热量温度，Tsat表示所述气体温度，Tboing表示所述蒸发温度。
在一些实施例中，所述获取所述汽车空调中的环境热量温度的步骤，进一步包括：
检测所述制冷剂处理设备的高压管路的第二压力；
根据所述第二压力，确定所述制冷剂在所述第二压力下的冷凝温度；
检测所述汽车空调中的制冷剂经过冷凝器冷凝后形成的液体的液体温度；
根据所述冷凝温度和所述液体温度，计算所述汽车空调中的环境热量温度。
在一些实施例中，所述计算所述汽车空调中的环境热量温度的计算公式如下：
SC＝Tliq-Tcooling
其中，SC表示所述环境热量温度，Tliq表示所述液体温度，Tcooling表示所述冷凝温度。
在一些实施例中，所述制冷剂处理设备还包括：用于安装在置于所述蒸发器内部的铜盘入风口的第一温湿度传感器、用于安装在置于所述蒸发器外部的铜盘入风口的第二温湿度传感器，
所述获取所述汽车空调中的制冷效果温度的步骤，进一步包括：
通过所述第一温湿度传感器获取所述汽车空调的室内湿球温度；
通过所述第二温湿度传感器获取所述汽车空调的室外干球温度；
根据所述室内湿球温度和所述室外干球温度，计算所述制冷剂在所述汽车空调中的制冷效果温度。
在一些实施例中，所述计算所述汽车空调中的制冷效果温度的计算公式如下：
Figure PCTCN2021079165-appb-000001
其中，TSH表示所述制冷效果温度，IDWB表示所述室内湿球温度，ODDB 表示所述室外干球温度。
在一些实施例中，所述根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量的步骤，进一步包括：
多次根据所述环境热量温度与所述制冷效果温度的差值控制所述制冷剂的传输量，直至所述环境热量温度与所述制冷效果温度的差值在预设范围内。
在一些实施例中，所述传输量与所述差值成正比。
为解决上述技术问题，第二方面，本发明实施例中提供了一种制冷剂传输装置，应用于制冷剂处理设备，所述制冷剂处理设备通过第一管路和第二管路分别与汽车空调连接，所述第一管路的管径大于所述第二管路的管径，所述装置包括：
第一控制模块，用于控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化；
切换模块，用于在所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输；
获取模块，用于获取所述汽车空调中的环境热量温度和制冷效果温度；
第二控制模块，用于根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量。
为解决上述技术问题，第三方面，本发明实施例提供了一种制冷剂处理设备，包括：
低压管路，其一端用于与汽车空调的低压管服务口连接；
高压管路，其一端用于与所述汽车空调的高压管服务口连接；
存储罐，用于存储制冷剂；
电子秤，用于称量所述存储罐的重量；
第一管路，其一端与所述存储罐连接，另一端与所述低压管路的另一端或者所述高压管路的另一端连接；
第二管路，其一端与所述存储罐连接，另一端与所述低压管路的另一端或者所述高压管路的另一端连接，且所述第一管路的管径大于所述第二管路的管径；
第一电磁阀，用于控制所述第一管路的通断；
第二电磁阀，用于控制所述第二管路的通断；
第一气压传感器，设于所述低压管路靠近所述第一电磁阀和所述第二电磁阀的一端；
第二气压传感器，设于所述高压管路靠近所述第一电磁阀和所述第二电磁阀的一端；
第一温度传感器，用于安装在所述汽车空调的蒸发器和压缩机之间且靠近所述低压管服务口；
第二温度传感器，用于安装在所述汽车空调的压缩机和干燥剂之间且靠近所述高压管服务口；
第一温湿度传感器，用于安装在所述蒸发器内部的铜盘入风口；
第二温湿度传感器，用于安装在所述蒸发器外部的铜盘入风口；
至少一个处理器，其与所述电子秤、所述第一电磁阀、所述第二电磁阀、所述第一气压传感器、所述第二气压传感器、所述第一温度传感器、所述第二温度传感器、所述第一温湿度传感器和所述第二温湿度传感器连接；以及，
与所述至少一个处理器通信连接的存储器；其中，
所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行如上第一方面所述的方法。
为解决上述技术问题，第四方面，本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使计算机执行如上第一方面所述的方法。
为解决上述技术问题，第五方面，本发明实施例还提供了一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行如上第一方面所述的方法。
与现有技术相比，本发明的有益效果是：区别于现有技术的情况，本发明实施例中提供了一种制冷剂传输方法，应用于制冷剂处理设备，该方法首先控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化，在所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输，然后获取所述汽车空调中的环境热量温度和制冷效果温度，并根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量，本发明实施例提供的制冷剂传输方法能够高精度高效率地传输制冷剂。
附图说明
一个或多个实施例中通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件/模块和步骤表示为类似的元件/模块和步骤，除非有特别申明，附图中的图不构成比例限制。
图1是本发明实施例提供的制冷剂传输方法的一种应用场景的示意图；
图2是本发明实施例提供的制冷剂传输方法的另一种应用场景的示意图；
图3是本发明实施例提供的一种制冷剂传输方法的流程图；
图4是图3所示方法中步骤120的一子流程图；
图5是图3所示方法中步骤120的另一子流程图；
图6是图3所示方法中步骤130的一子流程图；
图7是本发明实施例提供的一种制冷剂传输装置的结构示意图；
图8是本发明实施例提供的一种制冷剂处理设备的硬件结构示意图。
具体实施方式
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明，但不以任何形式限制本发明。应当指出的是，对本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进。这些都属于本发明的保护范围。
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
需要说明的是，如果不冲突，本发明实施例中的各个特征可以相互结合，均在本申请的保护范围之内。另外，虽然在装置示意图中进行了功能模块划分，在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于装置中的模块划分，或流程图中的顺序执行所示出或描述的步骤。此外，本文所采用的“第一”、“第二”、“第三”等字样并不对数据和执行次序进行限定，仅是对功能和作用基本相同的相同项或相似项进行区分。
除非另有定义，本说明书所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本说明书中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是用于限制本发明。本说明书所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
此外，下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。
根据SAE规范要求，汽车空调制冷剂的加注精度需要在±15克之内，而在加注制冷剂前，制冷剂存储在制冷剂处理设备的存储罐内，总重量在几十公斤，目前的传感器技术在这个量程范围很难控制在几克的称重精度，且制冷剂处理设备与汽车空调之间用于输送制冷剂的管路上会残留部分制冷剂，也会影响到加注精度。
为了解决现有制冷剂处理设备加注精度不佳、传输效率不高的问题，本发明实施例提供了一种制冷剂传输方法，应用于制冷剂处理设备，所述制冷剂处理设备与汽车空调连接，请参见图1，其示出了本发明实施例提供的一种制冷 剂传输方法的其中一种应用环境的示意图，该应用环境中包括：制冷剂处理设备10和汽车空调20，所述制冷剂处理设备10与所述汽车空调20通过低压管路11a连接。图1所示应用场景应用于所述制冷剂处理设备10为所述汽车空调20加注制冷剂的情况。
所述制冷剂处理设备10为一种能够为汽车空调20加注制冷剂的装置、设备或机器。所述制冷剂处理设备10还包括存储罐12、电子秤13、第一电磁阀14和第二电磁阀15。所述存储罐12用于存储制冷剂，所述电子秤13用于称量所述存储罐12的重量，以确定所述存储罐12中制冷剂的剩余量。可选地，所述电子秤13还可以替换为液体计等检测质量或质量变化的测量仪器或装置。
所述制冷剂处理设备10还设置有第一管路16和第二管路17，所述第一管路16和所述第二管路17的一端皆与所述存储罐12相接，另一端皆与所述低压管11a相接，工作时，仅所述第一管路16或所述第二管路17与所述低压管11a接通。
所述第一电磁阀14用于控制所述第一管路16的通断，当所述第一电磁阀14打开时，所述制冷剂处理设备10通过所述第一管路16为所述汽车空调20加注制冷剂；所述第二电磁阀15用于控制所述第二管路17的通断，当所述第二电磁阀15打开时，所述制冷剂处理设备10通过所述第二管路17为所述汽车空调20加注制冷剂。所述第一管路16的加注效率高于第二管路17的加注效率，例如，所述第一管路16的半径大于所述第二管路17的半径。所述第一管路16用于在所述汽车空调20需要大量加注制冷剂时打开，且同时所述第二管路17需要关闭。所述第二管路17用于在所述汽车空调20需要高精度控制所述制冷剂的加注量时打开，且同时所述第一管路16需要关闭。
所述制冷剂处理设备10还包括第一气压传感器P1，所述第一气压传感器P1设置在所述低压管路11a靠近所述第一电磁阀14和所述第二电磁阀15的一端，用于检测从所述存储罐12输出的制冷剂在低压管路11a中的气压大小。优选地，所述第一气压传感器P1设置与所述低压管路11a内，以获取较为精准的气压数据。
在本发明实施例中，所述制冷剂处理设备10还能够用于回收汽车空调20内的制冷剂。具体地，请一并参见图2，其示出了所述制冷剂处理设备10回收汽车空调20内的制冷剂的应用场景，该应用场景与图1所示应用场景不同的是，所述制冷剂处理设备10通过高压管路11b与汽车空调20的高压管服务口22接通时，所述制冷剂处理设备10从所述汽车空调20中回收制冷剂。所述高压管路11b与所述低压管路11a可以是同一管路，也可以是分开独立设置的两个管路。当所述高压管路11b与所述低压管路11a不为同一管路时，所述高压管路11b应当与上述低压管路11a相同，设置有与所述第一管路16和所述第二管路17相应的回收管路、电磁阀和第二气压传感器P2，用于控制及监控回收制冷剂的效率。
所述汽车空调20除上述低压管服务口21和高压管服务口22之外还包括：蒸发器23、冷凝器24、膨胀阀25、压缩机26和干燥剂27。所述蒸发器23用于将液态的制冷剂与所述汽车内部的空气进行热交换，汽化所述制冷剂，以达到汽车内部制冷的目的；所述冷凝器24用于将气态的制冷剂与汽车外部的空气进行热交换，液化所述制冷剂，以使液化后的制冷剂能够在汽车空调20内循环使用。所述膨胀阀25安装在所述蒸发器23与所述冷凝器24之间且靠近所述蒸发器23，用于调节制冷剂进入蒸发器23的流量，以使制冷剂在蒸发器23中能够充分汽化。所述压缩机26设置在所述冷凝器24和所述膨胀阀25之间，用于将所述蒸发器23汽化后的制冷剂加压处理，以使所述制冷剂能够获取动力并在所述汽车空调20内循环。所述低压管服务口21设置在所述膨胀阀25和所述压缩机26之间的管路上，且靠近所述膨胀阀25。所述干燥剂27用于吸收制冷剂中的水分和杂质。所述高压管服务口22设置在所述膨胀阀25和所述干燥剂27之间的管路上，且靠近所述膨胀阀25。所述蒸发器23内设置有由铜管盘绕而成的铜盘，所述铜盘部分置于所述蒸发器23内部，部分置于所述蒸发器23外部，置于所述蒸发器23外部的铜盘同于与汽车内部的空气接触进行热交换。
所述制冷剂处理设备10还设置有第一温度传感器T1、第二温度传感器T2、第一温湿度传感器IDWB和第二温湿度传感器ODDB。所述第一温度传感器T1安装在所述蒸发器23和所述压缩机26之间且靠近所述低压管服务口21，用于测量制冷剂经过所述蒸发器23蒸发后的气体温度。所述第一温湿度传感器IDWB安装在所述蒸发器23内部的铜盘上，且靠近铜盘的入风口，用于测量所述汽车空调20的室内湿球温度。所述第二温湿度传感器ODDB安装在所述蒸发器23外部的铜盘上，且靠近铜盘的入风口，用于测量所述汽车空调20的室外干球温度。优选地，所述第二温湿度传感器ODDB安装在所述铜盘入风口一英尺处，且需避开阳光，置于阴暗处。
在一些实施例中，当所述制冷剂处理设备10用于回收制冷剂时，所述制冷剂处理设备10还应当设置有第二温度传感器T2，该第二温度传感器T2应当设置在所述膨胀阀25和所述干燥剂27之间且靠近所述高压管服务口22，以用于测量制冷剂经冷凝器24冷凝后的冷凝温度。
在本发明实施例中，所述制冷剂处理设备10加注制冷剂时，先打开所述第一电磁阀14，制冷剂经所述第一管路16快速为所述汽车空调20加注制冷剂，在快达到加注量的时候，关闭所述第一电磁阀14并打开所述第二电磁阀15，制冷剂经所述第二管路17缓慢加注制冷剂，实现高精度加注。所述制冷剂通过所述低压管服务口21加注到所述汽车空调20内后，通过所述压缩机26、所述冷凝器27、所述干燥剂27、所述膨胀阀25、所述蒸发器23、所述膨胀阀25后再次经过所述压缩机26，形成制冷循环。
在本发明实施例中，所述制冷剂处理设备10回收制冷剂时，通过高压管路11b接通至高压管服务口22，打开所述第一电磁阀14，制冷剂经所述第一 管路16快速从所述汽车空调20回收制冷剂，或者，打开所述第二电磁阀15，制冷剂经所述第二管路17缓慢回收制冷剂，实现制冷剂的回收。
需要说明的是，制冷剂处理设备10也可仅实现加注和回收两者之一。本发明实施例所提供的制冷剂传输方法一般由上述制冷剂处理设备10执行，相应地，制冷剂传输装置一般设置在所述制冷剂处理设备10上。
具体地，下面结合附图，对本发明实施例作进一步阐述。
本发明实施例提供了一种制冷剂传输方法，该方法可被上述制冷剂处理设备10所执行，所述制冷剂处理设备通过如上述的第一管路和第二管路分别与汽车空调连接，所述第一管路的管径大于所述第二管路的管径，请参见图3，其示出了本发明实施例提供的一种制冷剂传输方法的流程图，该方法包括但不限于以下步骤：
步骤110：控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化。
在本发明实施例中，首先，可以通过如上所述的第一电磁阀14启动所述制冷剂处理设备10，以使所述制冷剂处理设备10通过所述低压管路11a和所述低压管服务口21为所述汽车空调快速加注制冷剂，或者通过所述高压管路11b和所述高压管服务口22从所述汽车空调中快速回收制冷剂。进一步地，启动所述汽车空调内的压缩机26，以使制冷剂在所述汽车空调内开始循环制冷，以使制冷剂能够均匀加注至汽车空调中，或者被充分回收。
同时，可通过如上述的电子秤13等重量测量仪器测量存储罐中制冷剂的重量变化情况。具体地，所述电子秤在制冷剂传输前后所称量的重量的值相减即为所述重量变化的值。
步骤120：当所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输。
在所述汽车空调内开始循环一定时间后，所述制冷剂的重量变化达到第一阈值后，例如在加注制冷剂时，存储罐中的制冷剂降低至第一阈值，或者，在回收制冷剂时，存储罐中的制冷剂升高至第一阈值时，关闭所述第一电磁阀14并打开所述第二电磁阀15，以使所述制冷剂切换至所述第二管路17缓慢传输。
其中，所述第一阈值是根据汽车空调所容置的制冷剂的总重量确定的。例如，当所述汽车空调所容置的制冷剂的总重量为550克时，所述第一阈值可设定为500克。具体地，部分汽车的车型可获知其汽车空调所容置的制冷剂的总重量，如总重量的值被标识在汽车空调及其周围处，可被制冷处理操作人员所见，或者存储于车辆的电子控制设备中，可被制冷剂处理设备读取，或者制冷剂处理设备中预存有车型与制冷剂总重量的对应关系，可根据车型确定其对应的总重量，可根据获取的总重量确定第一阈值，如第一阈值为总重量的95％；部分车型不可获知其空调所容置的制冷剂的总重量，制冷剂处理设备可以预估 第一阈值，如根据车辆尺寸或所知空调尺寸等预估，或者将第一阈值设为常值，或者根据预存的车型与制冷剂总重量的对应关系计算第一阈值。在所述制冷剂的传输量达到所述第一阈值之前，采用大管径的管路传输制冷剂能够保证制冷剂的高效率传输，而在达到所述第一阈值之后，采用小管径的光路传输制冷剂则能够保证制冷剂的高精度加注或回收。
步骤130：获取所述汽车空调中的环境热量温度和制冷效果温度。
进一步地，获取汽车空调处于当前工作状态和工作环境的环境热量温度，以及，所述汽车空调当前制冷循环下的制冷效果温度。所述工作状态指的是当前汽车空调处于制冷的工作状态，所述工作环境指的是当前汽车空调内部及外部的环境温度，具体可通过测量所述蒸发器置于汽车空调内部和外部的铜管的温度来确定，所述汽车空调的外部具体此处指的是汽车内部的温度。
步骤140：根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量。
具体的，可以多次根据环境热量温度和制冷效果温度的比较结果，调节控制传输量，直至环境热量温度与制冷效果温度大致相同，在此，大致相同是指环境热量温度与制冷效果的差值为零或差值在预设的误差范围内，差值的预设范围即是指大致相同的范围。传输量的确定可与差值成正比，在此，差值可为正值也可为负值，差值为正值代表需向汽车空调加注，差值为负值代表需从汽车空调回收。
需要说明的是，制冷剂处理设备在此微调的过程中，仅能实现加注或回收中的一种操作，即制冷剂处理设备在对汽车空调进行加注制冷剂操作时，需保证此差值一直为正值，表明汽车空调还未加注完成，若在加注过程中，出现差值为负值，则表明汽车空调已加注完成，不能再对其进行加注操作以防损坏汽车空调。制冷剂处理设备需要在加注过程中控制制冷剂的传输量(加注量)，以保证下一次获取到的差值不出现负值；若下一次获取到的差值在预设范围内，或者出现差值的负值在误差允许范围内，则制冷剂处理设备加注操作完成，停止加注。同理，制冷剂处理设备在对汽车空调进行回收制冷剂操作时，需保证此差值一直为负值或者零，差值为正值需在误差允许范围内。其操作方式同加注过程，在此不予赘述。
在获取所述环境热量温度和所述制冷效果温度后，判断所述环境热量温度和所述制冷效果温度是否一致，不一致时，确定所述环境热量温度和所述制冷效果温度的差值，以确定加注时制冷剂是否达到所述汽车空调所容置的制冷剂的总重量，也即是所述汽车空调内的制冷剂是否达到动态平衡，或者，以确定是否完全制冷剂是否完全回收。
本发明实施例中提供了一种制冷剂传输方法，应用于制冷剂处理设备，该方法首先控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化，在所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传 输，然后获取所述汽车空调中的环境热量温度和制冷效果温度，并根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量，本发明实施例提供的制冷剂传输方法能够高精度高效率地传输制冷剂。
在一些实施例中，可以通过冷媒从蒸发器中带走的热量温度(SH，SuperHeat)来确定汽车空调中的环境热量温度，请参见图4，其示出了图3所示方法中步骤120的一子流程图，基于图3所示方法，所述步骤120进一步包括：
步骤121a：检测所述制冷剂处理设备的低压管路的第一压力。
在本发明实施例中，可采用如上述应用场景所示的第一压力传感器P1来检测用于与汽车空调的接通的低压管路的第一压力。优选地，所述第一压力传感器P1设置在管路内。
步骤122a：根据所述第一压力，确定所述制冷剂在所述第一压力下的蒸发温度。
由于物质蒸发具有相应的蒸发特性，蒸发压力与蒸发温度成对应关系，在获取所述第一压力后，可根据所述低压压力确定所述制冷剂在第一压力下的蒸发温度。具体地，需要根据制冷剂的化学构成确定制冷剂的蒸发压力和蒸发温度的关系表或关系式，以在确定所述第一压力后查询得到制冷剂在所述第一压力下的蒸发温度。
步骤123a：检测所述汽车空调中的制冷剂经过所述蒸发器蒸发后形成的气体的气体温度。
进一步地，通过如上述应用场景所述的第一温度传感器T1确定制冷剂经过所述蒸发器蒸发后形成的气体的气体温度。优选地，所述第一温度传感器T1设置在管路内。
步骤124a：根据所述蒸发温度和所述气体温度，计算所述汽车空调中的环境热量温度。
在确定所述蒸发温度和所述气体温度后，即可确定制冷剂经过所述蒸发器由液体转换为气体时，传递至环境中的热量温度，其中，所述计算所述汽车空调内的制冷剂经过所述汽车空调的蒸发器后带走的热量温度的计算公式如下：
SH＝Tsat-Tboing
其中，SH表示所述环境热量温度，Tsat表示所述气体温度，Tboing表示所述蒸发温度。
在一些实施例中，还可以通过冷媒从冷凝器中带走的热量温度(SC，Subcooling)来确定汽车空调中的环境热量温度，请参见图5，其示出了图3所示方法中步骤120的另一子流程图，基于图3所示方法，所述步骤120进一步包括：
步骤121b：检测所述制冷剂处理设备的高压管路的第二压力。
在本发明实施例中，可采用如上述应用场景所示的第二压力传感器P2来检测用于与汽车空调的接通的高压管路的第二压力。优选地，所述第二压力传感器P2设置在管路内。
步骤122b：根据所述第二压力，确定所述制冷剂在所述第二压力下的冷凝温度。
由于物质冷凝具有相应的冷凝特性，冷凝压力与冷凝温度成对应关系，在获取所述第二压力后，可根据所述第二压力确定所述制冷剂在第二压力下的冷凝温度。具体地，需要根据制冷剂的化学构成确定制冷剂的冷凝压力和冷凝温度的关系表或关系式，以在确定所述第二压力后查询得到制冷剂在所述第二压力下的冷凝温度。
步骤123b：检测所述汽车空调中的制冷剂经过冷凝器冷凝后形成的液体的液体温度。
进一步地，通过如上述应用场景所述的第二温度传感器T2确定制冷剂经过所述冷凝器冷凝后形成的液体的液体温度。优选地，所述第二温度传感器T2设置在管路内。
步骤124b：根据所述冷凝温度和所述液体温度，计算所述汽车空调中的环境热量温度。
在确定所述冷凝温度和所述液体温度后，即可确定制冷剂经过所述冷凝器由气体转换为液体时，吸收的环境中的热量温度，其中，所述计算所述汽车空调中的环境热量温度的计算公式如下：
SC＝Tliq-Tcooling
其中，SC表示所述环境热量温度，Tliq表示所述液体温度，Tcooling表示所述冷凝温度。
在一些实施例中，所述制冷剂处理设备还包括：用于安装在置于所述蒸发器内部的铜盘入风口的第一温湿度传感器、用于安装在置于所述蒸发器外部的铜盘入风口的第二温湿度传感器，请一并参见图6，其示出了图3所示方法中步骤130的一子流程图，基于图3所示的方法，所述步骤130进一步包括：
步骤131：通过所述第一温湿度传感器获取所述汽车空调的室内湿球温度。
步骤132：通过所述第二温湿度传感器获取所述汽车空调的室外干球温度。
步骤133：根据所述室内湿球温度和所述室外干球温度，计算所述制冷剂在所述汽车空调中的制冷效果温度。
在本发明实施例中，为获取制冷剂在汽车空调中的制冷效果温度，可通过检测蒸发器内外环境的温度来确定制冷效果温度，为保证检测精度，优选地，检测置于蒸发器内部的铜盘的入风口处的温度作为室内湿球温度，检测置于蒸发器外部的铜盘的入风口处(也及时汽车内部)的温度作为室外干球温度。进 一步地，根据所述室内湿球温度和所述室外干球温度即可几所所述制冷效果温度，所述计算所述汽车空调中的制冷效果温度的计算公式如下：
Figure PCTCN2021079165-appb-000002
其中，TSH表示所述制冷效果温度，IDWB表示所述室内湿球温度，ODDB表示所述室外干球温度。
本发明提供了一种制冷剂传输装置的实施例，请一并参见图7，为本发明实施例提供的一种制冷剂传输装置的结构示意图，所述制冷剂传输装置200应用于制冷剂处理设备，所述制冷剂处理设备通过第一管路和第二管路分别与汽车空调连接，所述第一管路的管径大于所述第二管路的管径，，制冷剂传输装置200包括：第一控制模块210、切换模块220、获取模块230和第二控制模块240。
所述第一控制模块210用于控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化；
所述切换模块220用于在所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输；
所述获取模块230用于获取所述汽车空调中的环境热量温度和制冷效果温度；
所述第二控制模块240用于根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量。
在一些实施例中，所述第一阈值是根据汽车空调所容置的制冷剂的总重量确定的。
在一些实施例中，所述获取模块230还用于检测所述制冷剂处理设备的低压管路的第一压力；
根据所述第一压力，确定所述制冷剂在所述第一压力下的蒸发温度；
检测所述汽车空调中的制冷剂经过所述蒸发器蒸发后形成的气体的气体温度；
根据所述蒸发温度和所述气体温度，计算所述汽车空调中的环境热量温度。
在一些实施例中，所述计算所述汽车空调中的环境热量温度的计算公式如下：
SH＝Tsat-Tboing
其中，SH表示所述环境热量温度，Tsat表示所述气体温度，Tboing表示所述蒸发温度。
在一些实施例中，所述获取模块230还用于检测所述制冷剂处理设备的高压管路的第二压力；
根据所述第二压力，确定所述制冷剂在所述第二压力下的冷凝温度；
检测所述汽车空调中的制冷剂经过冷凝器冷凝后形成的液体的液体温度；
根据所述冷凝温度和所述液体温度，计算所述汽车空调中的环境热量温度。
在一些实施例中，所述计算所述汽车空调中的环境热量温度的计算公式如下：
SC＝Tliq-Tcooling
其中，SC表示所述环境热量温度，Tliq表示所述液体温度，Tcooling表示所述冷凝温度。
在一些实施例中，所述制冷剂处理设备还包括：用于安装在置于所述蒸发器内部的铜盘入风口的第一温湿度传感器、用于安装在置于所述蒸发器外部的铜盘入风口的第二温湿度传感器，
所述获取模块230还用于通过所述第一温湿度传感器获取所述汽车空调的室内湿球温度；
通过所述第二温湿度传感器获取所述汽车空调的室外干球温度；
根据所述室内湿球温度和所述室外干球温度，计算所述制冷剂在所述汽车空调中的制冷效果温度。
在一些实施例中，所述计算所述汽车空调中的制冷效果温度的计公式如下：
Figure PCTCN2021079165-appb-000003
其中，TSH表示所述制冷效果温度，IDWB表示所述室内湿球温度，ODDB表示所述室外干球温度。
在一些实施例中，所述第二控制模块240还用于多次根据所述环境热量温度与所述制冷效果温度的差值控制所述制冷剂的传输量，直至所述环境热量温度与所述制冷效果温度的差值在预设范围内。
在一些实施例中，所述传输量与所述差值成正比。
需要说明的是，由于本实施例中的制冷剂传输装置与上述方法实施例基于相同的发明构思，因此，方法实施例中的相应内容同样适用于装置实施例，此处不再详述。
进一步地，本发明实施例还提供的一种制冷剂处理设备，请一并参见图8，其示出了能够执行图3至图6所述制冷剂传输方法的制冷剂处理设备的硬件结构。所述制冷剂处理设备10可以是图1和/或图2所示的制冷剂处理设备。
所述制冷剂处理设备10包括：
低压管路11a，其一端用于与汽车空调的低压管服务口连接；
高压管路11b，其一端用于与所述汽车空调的高压管服务口连接；
存储罐12，用于存储制冷剂；
电子秤13，用于称量所述存储罐的重量；
第一管路16，其一端与所述存储罐连接，另一端与所述低压管路的另一端或者所述高压管路的另一端连接；
第二管路17，其一端与所述存储罐连接，另一端与所述低压管路的另一端或者所述高压管路的另一端连接，且所述第一管路的管径大于所述第二管路的管径；
第一电磁阀14，用于控制所述第一管路的通断；
第二电磁阀15，用于控制所述第二管路的通断；
第一气压传感器P1，设于所述低压管路靠近所述第一电磁阀和所述第二电磁阀的一端；
第二气压传感器P2，设于所述高压管路靠近所述第一电磁阀和所述第二电磁阀的一端；
第一温度传感器T1，用于安装在所述汽车空调的蒸发器和压缩机之间且靠近所述低压管服务口；
第二温度传感器T2，用于安装在所述汽车空调的压缩机和干燥剂之间且靠近所述高压管服务口；
第一温湿度传感器IDWB，用于安装在所述蒸发器内部的铜盘入风口；
第二温湿度传感器ODDB，用于安装在所述蒸发器外部的铜盘入风口；
至少一个处理器101其与所述电子秤13、所述第一电磁阀14、所述第二电磁阀15、所述第一气压传感器P1、所述第二气压传感器P2、所述第一温度传感器T1、所述第二温度传感器T2、所述第一温湿度传感器IDWB和所述第二温湿度传感器ODDB连接；以及，与所述至少一个处理器101通信连接的存储器102，图8中以其以一个处理器101为例。
需要说明的是，上述低压管路、高压管路、存储罐、电子秤、第一管路、第二管路、第一电磁阀、第二电磁阀、第一气压传感器、第二气压传感器、第一温度传感器、第二温度传感器、第一温湿度传感器和第二温湿度传感器等器件可以是如上述图1和/或图2所示应用场景及其实施例中所示的器件，此处不再详述。
所述存储器102存储有可被所述至少一个处理器101执行的指令，所述指令被所述至少一个处理器101执行，以使所述至少一个处理器101能够执行上述图3至图6所述的制冷剂传输方法。所述处理器101和所述存储器102可以通过总线或者其他方式连接，图8中以通过总线连接为例。
存储器102作为一种非易失性计算机可读存储介质，可用于存储非易失性软件程序、非易失性计算机可执行程序以及模块，如本申请实施例中的制冷剂传输方法对应的程序指令/模块，例如，附图7所示的各个模块。处理器101通过运行存储在存储器102中的非易失性软件程序、指令以及模块，从而执行 制冷剂处理设备的各种功能应用以及数据处理，即实现上述方法实施例所示的制冷剂传输方法。
存储器102可以包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需要的应用程序；存储数据区可存储根据制冷剂传输装置的使用所创建的数据等。此外，存储器102可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实施例中，存储器102可选包括相对于处理器101远程设置的存储器，这些远程存储器可以通过网络连接至制冷剂传输装置。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
所述一个或者多个模块存储在所述存储器102中，当被所述一个或者多个处理器101执行时，执行上述任意方法实施例中的制冷剂传输方法，例如，执行以上描述的图3至图6的方法步骤，实现图7中的各模块和各单元的功能。
上述产品可执行本申请实施例所提供的方法，具备执行方法相应的功能模块和有益效果。未在本实施例中详尽描述的技术细节，可参见本申请实施例所提供的方法。
本申请实施例还提供了一种非易失性计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令，该计算机可执行指令被一个或多个处理器执行，例如，执行以上描述的图3至图6的方法步骤，实现图7中的各模块的功能。
本申请实施例还提供了一种计算机程序产品，包括存储在非易失性计算机可读存储介质上的计算程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时时，使所述计算机执行上述任意方法实施例中的制冷剂传输方法，例如，执行以上描述的图3至图6的方法步骤，实现图7中的各模块的功能。
本发明实施例中提供了一种制冷剂传输方法，应用于制冷剂处理设备，该方法首先控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化，在所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输，然后获取所述汽车空调中的环境热量温度和制冷效果温度，并根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量，本发明实施例提供的制冷剂传输方法能够高精度高效率地传输制冷剂。
需要说明的是，以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部 件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
通过以上的实施方式的描述，本领域普通技术人员可以清楚地了解到各实施方式可借助软件加通用硬件平台的方式来实现，当然也可以通过硬件。本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory,ROM)或随机存储记忆体(Random Access Memory,RAM)等。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；在本发明的思路下，以上实施例或者不同实施例中的技术特征之间也可以进行组合，步骤可以以任意顺序实现，并存在如上所述的本发明的不同方面的许多其它变化，为了简明，它们没有在细节中提供；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (13)

  1. 一种制冷剂传输方法，其特征在于，应用于制冷剂处理设备，所述制冷剂处理设备通过第一管路和第二管路分别与汽车空调连接，所述第一管路的管径大于所述第二管路的管径，所述方法包括：
    控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化；
    当所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输；
    获取所述汽车空调中的环境热量温度和制冷效果温度；
    根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量。
  2. 根据权利要求1所述的方法，其特征在于，
    所述第一阈值是根据汽车空调所容置的制冷剂的总重量确定的。
  3. 根据权利要求1所述的方法，其特征在于，所述获取所述汽车空调中的环境热量温度的步骤，进一步包括：
    检测所述制冷剂处理设备的低压管路的第一压力；
    根据所述第一压力，确定所述制冷剂在所述第一压力下的蒸发温度；
    检测所述汽车空调中的制冷剂经过蒸发器蒸发后形成的气体的气体温度；
    根据所述蒸发温度和所述气体温度，计算所述汽车空调中的环境热量温度。
  4. 根据权利要求3所述的方法，其特征在于，所述计算所述汽车空调中的环境热量温度的计算公式如下：
    SH＝Tsat-Tboing
    其中，SH表示所述环境热量温度，Tsat表示所述气体温度，Tboing表示所述蒸发温度。
  5. 根据权利要求1所述的方法，其特征在于，所述获取所述汽车空调中的环境热量温度的步骤，进一步包括：
    检测所述制冷剂处理设备的高压管路的第二压力；
    根据所述第二压力，确定所述制冷剂在所述第二压力下的冷凝温度；
    检测所述汽车空调中的制冷剂经过冷凝器冷凝后形成的液体的液体温度；
    根据所述冷凝温度和所述液体温度，计算所述汽车空调中的环境热量温度。
  6. 根据权利要求5所述的方法，其特征在于，所述计算所述汽车空调中的环境热量温度的计算公式如下：
    SC＝Tliq-Tcooling
    其中，SC表示所述环境热量温度，Tliq表示所述液体温度，Tcooling表示所述冷凝温度。
  7. 根据权利要求1所述的方法，其特征在于，所述制冷剂处理设备还包括：用于安装在置于所述蒸发器内部的铜盘入风口的第一温湿度传感器、用于安装在置于所述蒸发器外部的铜盘入风口的第二温湿度传感器，
    所述获取所述汽车空调中的制冷效果温度的步骤，进一步包括：
    通过所述第一温湿度传感器获取所述汽车空调的室内湿球温度；
    通过所述第二温湿度传感器获取所述汽车空调的室外干球温度；
    根据所述室内湿球温度和所述室外干球温度，计算所述制冷剂在所述汽车空调中的制冷效果温度。
  8. 根据权利要求7所述的方法，其特征在于，所述计算所述汽车空调中的制冷效果温度的计算公式如下：
    Figure PCTCN2021079165-appb-100001
    其中，TSH表示所述制冷效果温度，IDWB表示所述室内湿球温度，ODDB表示所述室外干球温度。
  9. 根据权利要求1所述的方法，其特征在于，所述根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量的步骤，进一步包括：
    多次根据所述环境热量温度与所述制冷效果温度的差值控制所述制冷剂的传输量，直至所述环境热量温度与所述制冷效果温度的差值在预设范围内。
  10. 根据权利要求9所述的方法，其特征在于，所述传输量与所述差值成正比。
  11. 一种制冷剂传输装置，其特征在于，应用于制冷剂处理设备，所述制冷剂处理设备通过第一管路和第二管路分别与汽车空调连接，所述第一管路的管径大于所述第二管路的管径，所述装置包括：
    第一控制模块，用于控制制冷剂通过所述第一管路在所述汽车空调与所述制冷剂处理设备之间传输，并测量所述制冷剂处理设备中的所述制冷剂的重量变化；
    切换模块，用于在所述制冷剂的重量变化达到第一阈值时，将所述制冷剂切换至所述第二管路进行传输；
    获取模块，用于获取所述汽车空调中的环境热量温度和制冷效果温度；
    第二控制模块，用于根据所述环境热量温度和所述制冷效果温度的比较结果，控制所述制冷剂在所述汽车空调与所述制冷剂处理设备之间的传输量。
  12. 一种制冷剂处理设备，其特征在于，包括：
    低压管路，其一端用于与汽车空调的低压管服务口连接；
    高压管路，其一端用于与所述汽车空调的高压管服务口连接；
    存储罐，用于存储制冷剂；
    电子秤，用于称量所述存储罐的重量；
    第一管路，其一端与所述存储罐连接，另一端与所述低压管路的另一端或 者所述高压管路的另一端连接；
    第二管路，其一端与所述存储罐连接，另一端与所述低压管路的另一端或者所述高压管路的另一端连接，且所述第一管路的管径大于所述第二管路的管径；
    第一电磁阀，用于控制所述第一管路的通断；
    第二电磁阀，用于控制所述第二管路的通断；
    第一气压传感器，设于所述低压管路靠近所述第一电磁阀和所述第二电磁阀的一端；
    第二气压传感器，设于所述高压管路靠近所述第一电磁阀和所述第二电磁阀的一端；
    第一温度传感器，用于安装在所述汽车空调的蒸发器和压缩机之间且靠近所述低压管服务口；
    第二温度传感器，用于安装在所述汽车空调的压缩机和干燥剂之间且靠近所述高压管服务口；
    第一温湿度传感器，用于安装在所述蒸发器内部的铜盘入风口；
    第二温湿度传感器，用于安装在所述蒸发器外部的铜盘入风口；
    至少一个处理器，其与所述电子秤、所述第一电磁阀、所述第二电磁阀、所述第一气压传感器、所述第二气压传感器、所述第一温度传感器、所述第二温度传感器、所述第一温湿度传感器和所述第二温湿度传感器连接；以及，
    与所述至少一个处理器通信连接的存储器；其中，
    所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行如权利要求1-10任一项所述的方法。
  13. 一种计算机程序产品，其特征在于，所述计算机程序产品包括存储在计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行如权利要求1-10任一项所述的方法。
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