WO2023024673A1 - 用于预防压缩机缺油的装置、方法及集成式气液分离器 - Google Patents

用于预防压缩机缺油的装置、方法及集成式气液分离器 Download PDF

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Publication number
WO2023024673A1
WO2023024673A1 PCT/CN2022/099793 CN2022099793W WO2023024673A1 WO 2023024673 A1 WO2023024673 A1 WO 2023024673A1 CN 2022099793 W CN2022099793 W CN 2022099793W WO 2023024673 A1 WO2023024673 A1 WO 2023024673A1
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Prior art keywords
compressor
flow regulating
oil
sensor
valve
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PCT/CN2022/099793
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English (en)
French (fr)
Inventor
胡磊
夏嵩勇
李贵宾
刘振荣
王健
李长龙
Original Assignee
浙江吉利控股集团有限公司
浙江联控技术有限公司
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Application filed by 浙江吉利控股集团有限公司, 浙江联控技术有限公司 filed Critical 浙江吉利控股集团有限公司
Priority to EP22860020.1A priority Critical patent/EP4394280A1/en
Priority to KR1020247008280A priority patent/KR20240047420A/ko
Publication of WO2023024673A1 publication Critical patent/WO2023024673A1/zh

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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
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F25B49/022—Compressor control arrangements
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/16—Lubrication
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to the field of vehicle interior air conditioning, in particular to a device, method and integrated gas-liquid separator for preventing compressor oil shortage.
  • the heat pump system has the following problems in the heating mode or cooling mode of the low-temperature heat pump: due to the low ambient temperature, the viscosity of the refrigerant on the low-pressure side is high, which makes the compressor oil dissolve in the refrigerant, making it difficult for the compressor to return oil, and eventually Lead to oil shortage or even damage to the compressor.
  • the existing heat pump system cannot effectively diagnose the oil return difficulty of the compressor and whether the compressor is short of oil, and there is no mature detection method for the oil content of the compressor.
  • the object of the present invention is to provide a device, method and integrated gas-liquid separator for preventing compressor oil shortage, so as to improve the performance of existing compressors in heating mode or cooling mode. There is a problem of lack of oil.
  • the present invention provides a device for preventing compressor oil shortage, including: a cut-off valve, a first flow regulating component, an oil content detection component, and a controller; wherein, the cut-off valve is set at On the communication pipe between the compressor and the condenser; the first flow regulating component is arranged on the communication pipe between the condenser and the evaporator; the oil content detection component is arranged on the communication pipe between the evaporator and the compressor; the control The controller receives the signal of the oil content detection component, and controls the cut-off valve and the first flow regulating component.
  • the oil content detection assembly includes: a gas-liquid separator, a first sensor, a second flow regulating component, and a second sensor; the gas-liquid separator is respectively connected to the evaporator and the A compressor; a bypass is provided on the passage between the gas-liquid separator and the compressor; the second flow regulating component is provided on the bypass; the first sensor is provided on the second flow Upstream of the regulating part; the second sensor is arranged on the bypass and downstream of the second flow regulating part; the first sensor and the second sensor respectively transmit the detected information to the controller.
  • the cut-off valve is an electromagnetic control valve.
  • the first flow regulating component is an electronic expansion valve.
  • the first flow adjustment component includes: a thermal expansion valve and a first control valve, the thermal expansion valve is connected in series with the first control valve, and the first control valve is controlled by the Controlled by a controller, the first control valve may be a cut-off valve.
  • the first flow adjustment assembly includes: a short throttle tube and a second control valve, the short throttle tube is connected in series with the second control valve, and the second control valve is controlled by Controlled by the controller, the second control valve may be a cut-off valve.
  • the second flow regulating component is one of an electronic expansion valve, a thermal expansion valve, or a short throttle tube.
  • the first sensor and/or the second sensor is a pressure temperature sensor.
  • the gas-liquid separator, the shut-off valve, the first sensor, the second flow regulating component, and the second sensor are integrated together.
  • the invention provides a method for preventing oil shortage in a compressor, comprising the steps of: detecting the oil content on the low-pressure side of the compressor through an oil content detection component, and transmitting the detection result to a controller; the controller judges the oil content according to the detection result Whether the compressor is short of oil; when the compressor is short of oil, the controller closes the cut-off valve and the first flow regulating component, and at the same time controls the operation of the compressor to realize oil return.
  • the method further includes the step of: when the compressor is short of oil, when the closing time of the shut-off valve reaches a set threshold, open the shut-off valve and the first flow regulating component.
  • the present invention also provides an integrated gas-liquid separator, including: a gas-liquid separator body, a second flow regulating component, a first sensor, a second sensor, and a stop valve; wherein, the gas-liquid separator body is provided with a first An outlet, the end of the gas-liquid separator body is provided with a second outlet, a first pipeline and a bypass are provided between the first outlet and the second outlet, and the first pipeline communicates with the bypass in parallel;
  • the second flow regulating part is arranged on the bypass;
  • the first sensor is arranged on the bypass and is located upstream of the second flow regulating part;
  • the second sensor is arranged on the bypass and is located on the second Downstream of the flow adjustment component;
  • the cut-off valve is arranged at the end of the gas-liquid separator body, and controls the pipeline between the compressor and the condenser.
  • a controller is integrated on the body of the gas-liquid separator, and the controller receives signals from the first sensor and the second sensor, and controls the first flow regulating component.
  • the present invention detects the oil content on the low-pressure return air side of the compressor through the oil content detection component, and transmits the detection result to the controller.
  • the controller controls to close the shut-off valve and the first flow regulating part, and runs the compressor.
  • the compressor relies on its pump power to suck the oil in the evaporator and the oil content detection component into itself, Therefore, the oil return is realized; therefore, the present invention can effectively improve the problem of oil shortage in the heating mode or the cooling mode of the existing compressor.
  • the invention also provides a detection method aimed at the lack of oil in the compressor, which is easy to implement, has accurate results, and ensures that the oil content of the compressor is within an appropriate range.
  • the invention also provides an integrated gas-liquid separator, which integrates the oil content detection module and the stop valve together to detect the oil content of the compressor in real time, ensuring the safety of the compressor and improving the degree of system integration .
  • Fig. 1 is a structural schematic diagram of an embodiment of the device for preventing compressor oil shortage in the present invention
  • Fig. 2 is the electrical connection schematic diagram of the device used to prevent compressor oil shortage in the present invention
  • Fig. 3 is a schematic flow chart of an embodiment of the method for preventing compressor oil shortage in the present invention
  • Fig. 4 is a schematic structural view of an integrated gas-liquid separator of the present invention in an embodiment
  • Fig. 5 is an end sectional view of an embodiment of the integrated gas-liquid separator of the present invention.
  • Fig. 6 is a cross-sectional view of an embodiment of the SOV cut-off valve of the present invention.
  • Stop valve 2. The first flow regulating component; 3. Oil content detection component; 4. Controller; 5. Compressor; 6. Condenser; 7. Evaporator; 8. Gas-liquid separator; 9. The first 1. Sensor; 10. Second flow regulating part; 11. Second sensor; 12. Passage; 13. Bypass; 14. Integrated gas-liquid separator; 15. Gas-liquid separator body; 16. First outlet; 17 , the second outlet; 18, the first pipeline; 19, the return air inlet; 20, the import; 21, the outlet.
  • Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.
  • the present invention can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
  • the terminology used in the embodiments of the present invention is for describing specific implementations, not for limiting the protection scope of the present invention.
  • the test methods for which specific conditions are not indicated in the following examples are usually in accordance with conventional conditions, or in accordance with the conditions suggested by each manufacturer.
  • the object of the present invention is to provide a device, method and integrated gas-liquid separator for preventing oil shortage in compressors, so as to improve the performance of existing compressors in heating mode or cooling mode. There is a problem of lack of oil.
  • the device for preventing oil shortage in the compressor includes: a shut-off valve 1, a first flow regulating component 2, an oil content detection component 3, and a controller 4; wherein the shut-off valve is arranged between the compressor 5 and the condenser 6 On the communication pipeline; the first flow regulating component 2 is arranged on the communication pipeline between the condenser 6 and the evaporator 7; the oil content detection assembly 3 is arranged on the communication pipeline between the evaporator 7 and the compressor 5; the controller 4 receives the signal of the oil content detection component 3, and controls the cut-off valve 1 and the first flow regulating component 2.
  • the oil content detection component 3 is arranged on the low-pressure return air side of the compressor 5, and is used to detect the oil content, and transmits the detection result to the controller 4, and the controller 4 judges whether the compressor 5 is short of oil according to the detection result, and when the compressor 5 When the oil is short, the controller 4 closes the shut-off valve 1 and the first flow regulating part 2, and operates the compressor 5, and the compressor 5 relies on its pump power to suck the oil in the evaporator 7 and the oil content detection component 3 to realize the oil return , improve the oil shortage situation.
  • the oil content detection assembly 3 includes: a gas-liquid separator 8, a first sensor 9, a second flow regulating component 10, and a second sensor 11; the gas-liquid separator The device 8 is respectively connected with the evaporator 7 and the compressor 5; the passage 12 between the gas-liquid separator 8 and the compressor 5 is provided with a bypass 13; the second flow regulating part 10 is provided with On the bypass 13; the first sensor 9 is arranged upstream of the second flow regulating member 10, for example, on the passage 12 between the gas-liquid separator 8 and the compressor 5 , and located upstream of the bypass 13; or located on the bypass 13, and located upstream of the second flow regulating component 10.
  • the second sensor 11 is arranged on the bypass 13 and is located downstream of the second flow regulating component 10; the first sensor 9 and the second sensor 11 respectively transmit the detected information to the The above controller 4.
  • the return air of the compressor 5 contains refrigerant and oil.
  • the controller 4 can judge the return air according to the degree of temperature change. Gas oil content ratio (0-100%), and judge whether the compressor 5 is in an oil-short state or not.
  • the first sensor 9 and the second sensor 11 upload the detection results to the controller 4 in real time, so that the controller 4 can detect the oil content of the compressor 5 in real time.
  • the compressor 5 When the compressor 5 is running, the compressor 5 sucks the oil in the gas-liquid separator 8 and the evaporator 7 into the compressor 5 by its own pump power to realize the oil return, thereby alleviating the oil shortage of the compressor 5.
  • the cut-off valve 1 is an electromagnetic control valve, that is, a SOV cut-off valve.
  • the SOV cut-off valve has the advantages of simple structure, low cost, easy control and integration with the gas-liquid separator.
  • the first flow regulating component 2 is an electronic expansion valve.
  • the second flow regulating component 10 is one of an electronic expansion valve, a thermal expansion valve or a short throttle tube.
  • the first flow adjustment component includes: a thermal expansion valve and a first control valve, the thermal expansion valve communicates with the first control valve in series, and the first control valve is controlled by the Controlled by a controller, the first control valve may be a cut-off valve.
  • the first flow adjustment assembly includes: a short throttle tube and a second control valve, the short throttle tube communicates with the second control valve in series, and the second control valve is controlled by Controlled by the controller, the second control valve may be a cut-off valve.
  • the first sensor 9 and/or the second sensor 11 are pressure and temperature sensors.
  • the first sensor 9 is used to detect the temperature and pressure upstream of the second flow regulating part 10, and transmit the result to the controller 4;
  • the second sensor 11 is used to detect the temperature of the bypass 13 regulated by the second flow regulating part 10 and pressure, and transmit the result to the controller 4;
  • the controller 4 judges the oil content of the return air of the compressor 5 according to the detection results of the two sensors, and judges whether the compressor 5 is short of oil based on this.
  • the signal transmission between the two sensors and the controller 4 can be transmitted in a wired manner or in a wireless manner, wherein the wired manner can be a signal line connection or an electrical connection; the wireless manner can be Bluetooth, infrared, radio, communication network (such as 2G, 4G, 5G, etc.) or broadband wireless network, etc.
  • the wired manner can be a signal line connection or an electrical connection
  • the wireless manner can be Bluetooth, infrared, radio, communication network (such as 2G, 4G, 5G, etc.) or broadband wireless network, etc.
  • the gas-liquid separator 8, the shut-off valve 1, the first sensor 9, the second flow regulating component 10, the second sensor 11 and the bypass 13 are integrated together.
  • the integration method can adopt the following integrated gas-liquid separator 14 , wherein the gas-liquid separator 8 is equivalent to the gas-liquid separator body 15 .
  • the first pipe 18 described below is part of the passage 12 described in this embodiment.
  • the present invention also provides a kind of method for preventing the compressor from being short of oil, comprising the steps of: detecting the oil content on the low-pressure side of the compressor through the oil content detection component, and transmitting the detection result to the controller; the controller according to The detection result determines whether the compressor is short of oil; when the detection result is that the compressor is short of oil, the controller closes the stop valve and the first flow regulating component, and controls the operation of the compressor at the same time, so as to realize the return oil; when the oil content in the return air of the compressor returns to the normal range, the controller opens the shut-off valve and the first flow regulating part.
  • the method further includes a step: when the detection result is that the compressor is not short of oil, the shut-off valve and the first flow regulating component remain open.
  • the method further includes the step of: when the compressor is short of oil, when the closing time of the shut-off valve reaches a set threshold, open the shut-off valve and the first flow rate Adjustment parts.
  • the set threshold is less than or equal to two minutes.
  • the closing time of the SOV cut-off valve is 10S-20S, and the low-frequency speed of the compressor 5 is less than or equal to 2000 rev/min.
  • the present invention also provides an integrated gas-liquid separator 14, which integrates the shut-off valve 1 and the oil content detection assembly 3 together, and the integrated gas-liquid separator 14 includes: a gas-liquid separator The main body 15, the second flow regulating part 10, the first sensor 9, the second sensor 11, and the shut-off valve 1; wherein, the gas-liquid separator body 15 is provided with a first outlet 16, and the end of the gas-liquid separator body 15 A second outlet 17 is provided, a first pipeline 18 and a bypass 13 are arranged between the first outlet 16 and the second outlet 17, and the first pipeline 18 communicates with the bypass 13 in parallel; the second flow adjustment The component 10 is arranged on the bypass 13; the first sensor 9 is arranged on the bypass 13 and is located upstream of the second flow regulating component 10; the second sensor 11 is arranged on the bypass 13, and located downstream of the second flow regulating component 10 ; the shut-off valve 1 is disposed at the end of the gas-liquid separator body 15 and controls the pipeline between the compressor
  • the end of gas-liquid separator body 15 is also provided with return gas inlet 19, and return gas enters gas-liquid separator body 15 by return gas inlet 19, and flows out from first outlet 16, and then passes through The first pipeline 18 and the bypass 13 flow into the second outlet 17 , and the second outlet 17 is the main outlet for connecting the compressor 5 .
  • An inlet 20 and an outlet 21 are provided on the stop valve 1 , and the inlet 20 and the outlet 21 are perpendicular to each other.
  • the integrated gas-liquid separator further includes a controller 4 (not shown), and the controller 4 is detachably arranged on the body 15 of the gas-liquid separator for receiving the first sensor 9 and the detection signal of the second sensor 11, and control the first flow regulating part 2, and the first flow regulating part 2 is arranged on the pipeline between the condenser 6 and the evaporator 7.
  • the controller can be integrated on the body of the gas-liquid separator to improve integration and save space. In order to further increase the scope of application, the controller can be integrated in the overall control system of the vehicle console.
  • the first sensor 9 and/or the second sensor 11 is a pressure temperature sensor.
  • the first sensor 9 is used to detect the temperature and pressure of the bypass 13 before the adjustment of the second flow regulating part 10, and transmit the result to the controller;
  • the controller 4 judges the oil content of the return air of the compressor according to the detection results of the two sensors, and judges whether the compressor is short of oil based on this.
  • the signal transmission between the two sensors and the controller can be transmitted in a wired way or a wireless way, wherein the wired way can be a signal line connection or an electrical connection; the wireless way can be bluetooth, infrared, radio, communication network (such as 2G , 4G, 5G, etc.) or broadband wireless network, etc.
  • the wired way can be a signal line connection or an electrical connection
  • the wireless way can be bluetooth, infrared, radio, communication network (such as 2G , 4G, 5G, etc.) or broadband wireless network, etc.
  • the present invention detects the oil content of the low-pressure return air side of the compressor 4 through the oil content detection component 3 , and transmits the detection result to the controller 4 .
  • the controller 4 controls to close the shut-off valve 1 and the first flow regulating part 2, and operates the compressor 5.
  • the oil in 8 is sucked into itself, so as to realize the oil return; therefore, the present invention can effectively improve the problem of oil shortage in the heating mode or the cooling mode of the existing compressor. Therefore, the present invention effectively overcomes some practical problems in the prior art and thus has high utilization value and use significance.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

本发明提供一种用于预防压缩机缺油的装置、方法及集成式气液分离器，具体涉及汽车空调领域。所述装置包括：截止阀，第一流量调节部件，含油量检测组件，以及控制器；其中，截止阀设置于压缩机及冷凝器之间的连通管道上；第一流量调节部件设置于冷凝器与蒸发器之间的连通管道上；含油量检测组件设置于蒸发器与压缩机之间的连通管道上；控制器接收含油量检测组件的信号，并控制所述截止阀及第一流量调节部件。所述方法通过所述装置实现，所述集成式气液分离器将所述截止阀及所述含油量检测组件集成在一起。本发明用于改善现有的压缩机在制热模式或制冷模式下发生缺油的问题。

Description

用于预防压缩机缺油的装置、方法及集成式气液分离器 技术领域
本发明涉及车辆内部空调领域，具体涉及一种用于预防压缩机缺油的装置、方法及集成式气液分离器。
背景技术
目前电动汽车空调中越来越多的使用热泵系统。然而，热泵系统在低温热泵制热模式或制冷模式时存在以下问题：由于环境温度较低，低压侧制冷剂粘度较高，从而使得压缩机油溶解于制冷剂，压缩机回油困难，并最终导致压缩机发生缺油甚至损坏事故。同时，现有的热泵系统化针对压缩机回油困难、压缩机是否缺油无法进行有效诊断，亦无成熟的压缩机含油量的检测方法。
发明内容
鉴于以上现有技术的缺点，本发明的目的在于提供一种用于预防压缩机缺油的装置、方法及集成式气液分离器，以改善现有的压缩机在制热模式或制冷模式下发生缺油的问题。
为实现上述目的及其它相关目的，本发明提供一种用于预防压缩机缺油的装置，包括：截止阀，第一流量调节部件，含油量检测组件，以及控制器；其中，截止阀设置于压缩机及冷凝器之间的连通管道上；第一流量调节部件设置于冷凝器与蒸发器之间的连通管道上；含油量检测组件设置于蒸发器与压缩机之间的连通管道上；控制器接收含油量检测组件的信号，并控制所述截止阀及第一流量调节部件。
在本发明一实施例中，所述含油量检测组件包括：气液分离器，第一传感器，第二流量调节部件，第二传感器；所述气液分离器分别连接所述蒸发器及所述压缩机；所述气液分离器与所述压缩机之间的通路上设有旁路；所述第二流量调节部件设于所述旁路上；所述第一传感器设于所述第二流量调节部件的上游；所述第二传感器设于所述旁路上，并位于所述第二流量调节部件的下游；所述第一传感器与所述第二传感器分别将检测到的信息传递给所述控制器。
在本发明一实施例中，所述截止阀为电磁控制阀。
在本发明一实施例中，所述第一流量调节组件为电子膨胀阀。
在本发明一实施例中，所述第一流量调节组件包括：热力膨胀阀及第一控制阀，所述热力膨胀阀与所述第一控制阀串联连接，所述第一控制阀由所述控制器控制，所述第一控制阀可以为截止阀。
在本发明一实施例中，所述第一流量调节组件包括：节流短管及第二控制阀，所述节流短管与所述第二控制阀串联连接，所述第二控制阀由所述控制器控制，所述第二控制阀可以为截止阀。
在本发明一实施例中，所述第二流量调节部件为电子膨胀阀、热力膨胀阀或者节流短管的一种。
在本发明一实施例中，所述第一传感器和/或所述第二传感器为压力温度传感器。
在本发明一实施例中，气液分离器，截止阀，第一传感器，第二流量调节部件，第二传感器集成在一起。
本发明提供一种用于预防压缩机缺油的方法，包括步骤：通过含油量检测组件检测压缩机低压侧的含油量，并将检测结果传递给控制器；控制器根据所述检测结果判断所述压缩机是否缺油；当所述压缩机缺油时，控制器关闭所述截止阀及所述第一流量调节部件，同时控制压缩机运行，以实现回油。
在本发明一实施例中，所述方法还包括步骤：当所述压缩机缺油时，当所述截止阀关闭时长达到设定阈值时，则开启截止阀及第一流量调节部件。
本发明还提供一种集成式气液分离器，包括：气液分离器本体，第二流量调节部件，第一传感器，第二传感器，以及截止阀；其中，气液分离器本体内部设置有第一出口，气液分离器本体的端部设置有第二出口，所述第一出口与第二出口之间设置有第一管道与旁路，所述第一管道与所述旁路并联连通；第二流量调节部件设于所述旁路上；第一传感器设于所述旁路上，并位于所述第二流量调节部件的上游；第二传感器设于所述旁路上，并位于所述第二流量调节部件的下游；截止阀设置于所述气液分离器本体的端部，并控制压缩机与冷凝器之间的管路。
在本发明一实施例中，所述气液分离器本体上还集成有控制器，所述控制器接收第一传感器及第二传感器的信号，并控制第一流量调节部件。
综上所述，本发明通过含油量检测组件检测压缩机低压回气侧的含油量，并将检测结果 传递给控制器。当压缩机缺油时，控制器控制关闭截止阀以及第一流量调节部件，并运行压缩机，压缩机在运行过程中依靠其泵功将蒸发器及含油量检测组件中的油吸入至自身，从而实现回油；因此，本发明能够有效改善现有的压缩机在制热模式或制冷模式下发生缺油的问题。
此外，本发明还提供了针对压缩机缺油情况的检测方法，该方法便于实现，结果精确，并保证压缩机含油量处于合适的范围内。同时，本发明还提供了一种集成式气液分离器，将含油量检测模块与截止阀集成在一起，实时对压缩机含油量进行检测，保证压缩机的安全，并且提高了系统集成化程度。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明用于预防压缩机缺油的装置于一实施例中的结构示意图；
图2为本发明用于预防压缩机缺油的装置的电气连接示意图；
图3为本发明用于预防压缩机缺油的方法于一实施例中的流程示意图；
图4为本发明集成式气液分离器于一实施例中的结构示意图；
图5为本发明集成式气液分离器于一实施例中的端部剖视图；
图6为本发明SOV截止阀于一实施例中的剖视图。
元件标号说明
1、截止阀；2、第一流量调节部件；3、含油量检测组件；4、控制器；5、压缩机；6、冷凝器；7、蒸发器；8、气液分离器；9、第一传感器；10、第二流量调节部件；11、第二传感器；12、通路；13、旁路；14、集成式气液分离器；15、气液分离器本体；16、第一出口；17、第二出口；18、第一管道；19、回气进口；20、进口；21、出口。
具体实施方式
以下通过特定的具体实例说明本发明的实施方式，本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其它优点与功效。本发明还可以通过另外不同的具体实施方式加以实施或应用，本说明书中的各项细节也可以基于不同观点与应用，在没有背离本发明的精 神下进行各种修饰或改变。需说明的是，在不冲突的情况下，以下实施例及实施例中的特征可以相互组合。还应当理解，本发明实施例中使用的术语是为了描述特定的具体实施方案，而不是为了限制本发明的保护范围。下列实施例中未注明具体条件的试验方法，通常按照常规条件，或者按照各制造商所建议的条件。
请参阅图1至图6。须知，本说明书附图所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容所能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
当实施例给出数值范围时，应理解，除非本发明另有说明，每个数值范围的两个端点以及两个端点之间任何一个数值均可选用。除非另外定义，本发明中使用的所有技术和科学术语与本技术领域的技术人员对现有技术的掌握及本发明的记载，还可以使用与本发明实施例中所述的方法、设备、材料相似或等同的现有技术的任何方法、设备和材料来实现本发明。
请参阅图1至图2，本发明的目的在于提供一种用于预防压缩机缺油的装置、方法及集成式气液分离器，以改善现有的压缩机在制热模式或制冷模式下发生缺油的问题。所述用于预防压缩机缺油的装置包括：截止阀1，第一流量调节部件2，含油量检测组件3，以及控制器4；其中，截止阀设置于压缩机5及冷凝器6之间的连通管道上；第一流量调节部件2设置于冷凝器6与蒸发器7之间的连通管道上；含油量检测组件3设置于蒸发器7与压缩机5之间的连通管道上；控制器4接收含油量检测组件3的信号，并控制所述截止阀1及第一流量调节部件2。
含油量检测组件3设置于压缩机5的低压回气侧，用于检测含油量，并将检测结果传递给控制器4，控制器4根据检测结果判断压缩机5是否缺油，当压缩机5缺油时，控制器4关闭截止阀1及第一流量调节部件2，并运行压缩机5，压缩机5依靠其泵功吸入蒸发器7及含油量检测组件3中的油，以实现回油，改善缺油情况。
请参阅图1，在本发明一实施例中，所述含油量检测组件3包括：气液分离器8，第一传感器9，第二流量调节部件10，第二传感器11；所述气液分离器8分别连接所述蒸发器7及 所述压缩机5；所述气液分离器8与所述压缩机5之间的通路12上设有旁路13；所述第二流量调节部件10设于所述旁路13上；所述第一传感器9设于所述第二流量调节部件10的上游，例如，设于所述气液分离器8与所述压缩机5之间的通路12上，并位于旁路13的上游；或者设于旁路13上，并位于第二流量调节部件10的上游。所述第二传感器11设于所述旁路13上，并位于所述第二流量调节部件10的下游；所述第一传感器9与所述第二传感器11分别将检测到的信息传递给所述控制器4。
压缩机5的回气包含冷媒和油，当冷媒遇到第二流量调节部件10时，其温度会发生变化，而油的温度不会发生变化，因此控制器4可以根据温度的变化程度判断回气含油量的比例(0—100％)，并以此判断压缩机5是否处于缺油状态。第一传感器9及第二传感器11实时将检测结果上传至控制器4，实现控制器4对压缩机5含油量的实时检测，当检测到压缩机5为缺油状态时，控制器4控制压缩机5运行，压缩机5依靠其自身泵功将气液分离器8及蒸发器7中的油吸入至压缩机5内部，以实现回油，从而缓解压缩机5的缺油情况。
在本发明一实施例中，所述截止阀1为电磁控制阀，即SOV截止阀。SOV截止阀结构简单，成本低廉，便于控制，且利于实现与气液分离器的集成。所述第一流量调节组件2为电子膨胀阀。所述第二流量调节部件10为电子膨胀阀、热力膨胀阀或者节流短管的一种。
在本发明一实施例中，所述第一流量调节组件包括：热力膨胀阀及第一控制阀，所述热力膨胀阀与所述第一控制阀串联连通，所述第一控制阀由所述控制器控制，所述第一控制阀可以为截止阀。
在本发明一实施例中，所述第一流量调节组件包括：节流短管及第二控制阀，所述节流短管与所述第二控制阀串联连通，所述第二控制阀由所述控制器控制，所述第二控制阀可以为截止阀。
请参阅图1，在本发明一实施例中，所述第一传感器9和/或所述第二传感器11为压力温度传感器。第一传感器9用于检测第二流量调节部件10上游的温度及压力，并将结果传递给控制器4；第二传感器11用于检测经过第二流量调节部件10调节后的旁路13的温度及压力，并将结果传递给控制器4；控制器4根据两个传感器的检测结果判断压缩机5的回气含油量，并以此为依据判断压缩机5是否缺油。两个传感器与控制器4之间的信号传递可以为有线方式传递也可以为无线方式传递，其中有线方式可以为信号线连接或电连接；无线方式可以为蓝牙、红外、无线电、通讯网络(例如2G、4G、5G等)或宽带无线网络等。
请参阅图1，图4及图5，在本发明一实施例中，气液分离器8，截止阀1，第一传感器9，第二流量调节部件10，第二传感器11以及旁路13集成在一起。其集成方式可以采用下述集成式气液分离器14的集成方式，其中，气液分离器8相当于气液分离器本体15。下述的第一管道18属于本实施例所述的通路12的一部分。
请参阅图3，本发明还提供一种用于预防压缩机缺油的方法，包括步骤：通过含油量检测组件检测压缩机低压侧的含油量，并将检测结果传递给控制器；控制器根据所述检测结果判断所述压缩机是否缺油；当检测结果为所述压缩机缺油时，控制器关闭所述截止阀及所述第一流量调节部件，同时控制压缩机运行，以实现回油；当压缩机回气中的含油量恢复至正常范围时，控制器开启截止阀及第一流量调节部件。
请参阅图3，在本发明一实施例中，所述方法还包括步骤：当检测结果为所述压缩机不缺油时，截止阀与第一流量调节部件维持打开状态。
请参阅图3，在本发明一实施例中，所述方法还包括步骤：当所述压缩机缺油时，当所述截止阀关闭时长达到设定阈值时，则开启截止阀及第一流量调节部件。所述的设定阈值为小于等于两分钟，为了保证压缩机的安全运行，压缩机5在缺油的情况下，SOV截止阀的关闭时间为10S-20S，压缩机5的低频转速为小于等于2000转/min。
请参阅图4至图5，本发明还提供一种集成式气液分离器14，将截止阀1及含油量检测组件3集成在一起，该集成式气液分离器14包括：气液分离器本体15，第二流量调节部件10，第一传感器9，第二传感器11，以及截止阀1；其中，气液分离器本体15内部设置有第一出口16，气液分离器本体15的端部设置有第二出口17，所述第一出口16与第二出口17之间设置有第一管道18与旁路13，所述第一管道18与所述旁路13并联连通；第二流量调节部件10设于所述旁路13上；第一传感器9设于所述旁路13上，并位于所述第二流量调节部件10的上游；第二传感器11设于所述旁路13上，并位于所述第二流量调节部件10的下游；截止阀1设置于所述气液分离器本体15的端部，并控制压缩机5与冷凝器6之间的管路。
请参阅图4至图6，气液分离器本体15的端部还设有回气进口19，回气由回气进口19进入气液分离器本体15，并自第一出口16流出，再经由第一管道18及旁路13流入至第二出口17，第二出口17为总出口，用于连接压缩机5。截止阀1上设置有的进口20及出口21，所述进口20与所述出口21相互垂直。
在本发明一实施例中，所述集成式气液分离器还包括控制器4(未示出)，控制器4可拆 卸设于所述气液分离器本体15上，用于接收第一传感器9及第二传感器11的检测信号，并控制第一流量调节部件2，第一流量调节部件2设于冷凝器6及蒸发器7之间的管路上。通过上述集成式气液分离器能够有效解决压缩机发生缺油的问题。当应用环境允许时，所述控制器可以集成在所述气液分离器本体上，以提高集成度，节省空间。为了进一步的增大适用范围，控制器可以集成在车辆控制台的总控制系统中。
在本发明一实施例中，所述第一传感器9和/或所述第二传感器11为压力温度传感器。第一传感器9用于检测第二流量调节部件10调节前的旁路13的温度及压力，并将结果传递给控制器；第二传感器11用于检测经过第二流量调节部件10调节后的旁路13的温度及压力，并将结果传递给控制器4；控制器4根据两个传感器的检测结果判断压缩机回气含油量，并以此为依据判断压缩机是否缺油。两个传感器与控制器之间的信号传递可以为有线方式传递也可以为无线方式传递，其中有线方式可以为信号线连接或电连接；无线方式可以为蓝牙、红外、无线电、通讯网络(例如2G、4G、5G等)或宽带无线网络等。
综上所述，本发明通过含油量检测组件3检测压缩机4低压回气侧的含油量，并将检测结果传递给控制器4。当压缩机5缺油时，控制器4控制关闭截止阀1以及第一流量调节部件2，并运行压缩机5，压缩机5在运行过程中依靠其泵功将蒸发器7及气液分离器8中的油吸入至自身，从而实现回油；因此，本发明能够有效改善现有的压缩机在制热模式或制冷模式下发生缺油的问题。所以，本发明有效克服了现有技术中的一些实际问题从而有很高的利用价值和使用意义。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (10)

  1. 一种用于预防压缩机缺油的装置，其特征在于，包括：
    截止阀，设置于压缩机及冷凝器之间的连通管道上；
    第一流量调节部件，设置于冷凝器与蒸发器之间的连通管道上；
    含油量检测组件，设置于蒸发器与压缩机之间的连通管道上；
    控制器，接收含油量检测组件的信号，并控制所述截止阀，第一流量调节部件，以及压缩机。
  2. 根据权利要求1所述的用于预防压缩机缺油的装置，其特征在于，所述含油量检测组件包括：气液分离器，第一传感器，第二流量调节部件，第二传感器；所述气液分离器分别连接所述蒸发器及所述压缩机；所述气液分离器与所述压缩机之间的通路上设有旁路；所述第二流量调节部件设于所述旁路上；所述第一传感器设于所述第二流量调节部件的上游；所述第二传感器设于所述旁路上，并位于所述第二流量调节部件的下游；所述第一传感器与所述第二传感器分别将检测到的信息传递给所述控制器。
  3. 根据权利要求1所述的用于预防压缩机缺油的装置，其特征在于，所述截止阀为电磁控制阀。
  4. 根据权利要求1所述的用于预防压缩机缺油的装置，其特征在于，所述第一流量调节组件为电子膨胀阀。
  5. 根据权利要求2所述的用于预防压缩机缺油的装置，其特征在于，所述第二流量调节部件为电子膨胀阀、热力膨胀阀或者节流短管的一种。
  6. 根据权利要求2所述的用于预防压缩机缺油的装置，其特征在于，所述第一传感器和/或所述第二传感器为压力温度传感器。
  7. 根据权利要求2所述的用于预防压缩机缺油的装置，其特征在于，气液分离器，截止阀，第一传感器，第二流量调节部件，第二传感器集成在一起。
  8. 一种通过权利要求1-7任一所述装置实现的方法，其特征在于，包括步骤：
    通过含油量检测组件检测压缩机低压侧的含油量，并将检测结果传递给控制器；
    控制器根据所述检测结果判断所述压缩机是否缺油；
    当所述压缩机缺油时，控制器关闭所述截止阀及所述第一流量调节部件，同时控制压缩机运行，以实现回油。
  9. 根据权利要求8所述的方法，其特征在于，还包括步骤：当所述压缩机缺油时，所述截止阀关闭时长达到设定阈值时，则开启截止阀及第一流量调节部件。
  10. 一种集成式气液分离器，其特征在于，包括：
    气液分离器本体，其内部设置有第一出口，其端部设置有第二出口，所述第一出口与 第二出口之间设置有第一管道与旁路，所述第一管道与所述旁路并联连通；
    第二流量调节部件，设于所述旁路上；
    第一传感器，设于所述旁路上，并位于所述第二流量调节部件的上游；
    第二传感器，设于所述旁路上，并位于所述第二流量调节部件的下游；
    截止阀，设置于所述气液分离器本体的端部，并控制压缩机与冷凝器之间的管路。
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