WO2020220989A1 - 一种冷柜设备、制冷系统及其控制方法 - Google Patents

一种冷柜设备、制冷系统及其控制方法 Download PDF

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Publication number
WO2020220989A1
WO2020220989A1 PCT/CN2020/084634 CN2020084634W WO2020220989A1 WO 2020220989 A1 WO2020220989 A1 WO 2020220989A1 CN 2020084634 W CN2020084634 W CN 2020084634W WO 2020220989 A1 WO2020220989 A1 WO 2020220989A1
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temperature
refrigerant
preset
condenser
degree
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PCT/CN2020/084634
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English (en)
French (fr)
Inventor
赵向辉
李靖
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青岛海尔智能技术研发有限公司
海尔智家股份有限公司
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Publication of WO2020220989A1 publication Critical patent/WO2020220989A1/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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/06—Superheaters
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • F25B2600/2513—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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2103—Temperatures near a heat exchanger
    • 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
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
    • 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

  • This application relates to the field of refrigeration equipment, for example, to a refrigeration cabinet equipment, a refrigeration system and a control method thereof.
  • the electronic expansion valve is a throttling element that can adjust the refrigerant flow of the refrigeration device according to the preset program. It is often used for the throttling control of the refrigerant flow of refrigeration equipment such as refrigerators and air conditioners; especially when the load changes during the operation of the refrigeration equipment. In severe or wide range of operating conditions, traditional throttling components (such as capillary tubes, thermal expansion valves, etc.) can no longer meet the requirements of comfort and energy saving. Electronic expansion valves have become more comprehensive as throttling components with more comprehensive functions. More and more widely used.
  • the electronic expansion valve has the advantages of fast response and action speed. Generally, it only takes a few seconds to go from fully closed to fully open.
  • the opening and closing characteristics and speed can be set artificially; the electronic expansion valve can be 10%-100% Precise adjustment within the range, and the adjustment range can be set according to the actual work requirements of different refrigeration equipment products.
  • the control method of the electronic expansion valve is generally to adjust the opening degree of the electronic expansion valve according to the degree of refrigerant superheat detected by the evaporator of the refrigeration equipment.
  • the degree of refrigerant superheat is relatively high. When it is high, the opening of the electronic expansion valve is increased, and when the refrigerant superheat is small, the opening of the electronic expansion valve is decreased.
  • the refrigeration equipment needs to be equipped with a refrigerant superheat control system composed of electronic expansion valves, pressure sensors, temperature sensors, controllers and other components.
  • the pressure sensor is mainly responsible for detecting the evaporation pressure of the refrigerant in the evaporator.
  • the temperature sensor can generate the corresponding resistance value signal according to the temperature;
  • the controller can receive the 4mA-20mA current signal sent by the pressure sensor, and the temperature sensor According to these signals, the refrigerant superheat of the evaporator is determined, and then the built-in program sends out a pulse signal to control the opening of the electronic expansion valve; the electronic expansion valve controls the opening of the expansion valve according to the received pulse signal to ensure proper amount The amount of liquid supply and suitable superheat.
  • the above control process requires multiple sensors such as temperature sensor and pressure sensor to be installed in the middle or outlet position of the evaporator; since the evaporators of refrigeration equipment such as refrigerators are mostly placed in the foam layer, the installation of the above sensors is not convenient on the one hand, and the other When the sensor fails, it is not easy to disassemble and repair.
  • the refrigeration system includes a refrigerant circulation loop composed mainly of a condenser for external heat exchange, an evaporator for internal heat exchange, a compressor, and a throttling device.
  • the refrigeration system also includes a heat regenerator.
  • the first regenerative cavity of the regenerator is connected in series with the refrigerant pipe section between the condenser and throttling device, and the second regenerative cavity of the regenerator is connected in series with the refrigerant pipe section between the evaporator and the compressor;
  • the control method includes:
  • the flow opening degree of the throttling device is controlled and adjusted.
  • controlling and adjusting the flow opening of the throttling device includes:
  • the flow opening degree of the throttling device is controlled and adjusted.
  • controlling and adjusting the flow opening degree of the throttling device according to the temperature difference and the preset first difference threshold, the refrigerant subcooling degree of the refrigerant outlet and the preset subcooling threshold value includes :
  • control to reduce the flow opening degree of the throttling device When the temperature difference is greater than the preset first difference threshold, or the refrigerant supercooling degree of the refrigerant outlet is less than the preset supercooling threshold, control to reduce the flow opening degree of the throttling device.
  • controlling and adjusting the flow opening degree of the throttling device according to the temperature difference and the preset first difference threshold, the refrigerant subcooling degree of the refrigerant outlet and the preset subcooling threshold value includes :
  • control to increase the flow opening degree of the throttling device When the temperature difference is less than the preset first difference threshold, and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, control to increase the flow opening degree of the throttling device.
  • controlling and adjusting the flow opening degree of the throttling device according to the temperature difference and the preset first difference threshold, the refrigerant subcooling degree of the refrigerant outlet and the preset subcooling threshold value includes :
  • the flow opening degree of the throttling device is kept unchanged.
  • control method further includes:
  • a refrigeration system is provided.
  • the refrigeration system includes a refrigerant circulation loop composed mainly of a condenser for external heat exchange, an evaporator for internal heat exchange, a compressor, and a throttling device.
  • the refrigeration system also includes a heat regenerator.
  • the first regenerative cavity of the regenerator is connected in series with the refrigerant pipe section between the condenser and throttling device, and the second regenerative cavity of the regenerator is connected in series with the refrigerant pipe section between the evaporator and the compressor;
  • the refrigeration system also includes:
  • the first temperature sensor is used to obtain the first temperature of the external environment that exchanges heat with the condenser during the operation of the refrigeration system;
  • the second temperature sensor is used to obtain the suction temperature of the compressor during the operation of the refrigeration system
  • the controller is used to determine the degree of refrigerant subcooling at the refrigerant outlet of the condenser
  • the flow opening degree of the throttling device is controlled and adjusted.
  • the controller is specifically configured to:
  • the flow opening degree of the throttling device is controlled and adjusted.
  • the controller is specifically configured to:
  • control to reduce the flow opening degree of the throttling device When the temperature difference is greater than the preset first difference threshold, or the refrigerant supercooling degree of the refrigerant outlet is less than the preset supercooling threshold, control to reduce the flow opening degree of the throttling device.
  • a refrigerator apparatus According to another aspect of the embodiments of the present disclosure, there is provided a refrigerator apparatus.
  • the freezer device has a refrigeration system as in any of the previously disclosed embodiments.
  • the control method of the refrigeration system can control and adjust the flow opening of the throttling device according to the first temperature of the external environment, the suction temperature of the compressor and the refrigerant subcooling degree at the outlet of the condenser; therefore, there is no need to rely on the evaporation
  • the opening control of the parameters detected by the sensor on the sensor, especially for refrigeration equipment such as refrigerators where the evaporator is installed in the foam layer effectively simplifies the installation of the above-mentioned sensors and facilitates maintenance, while still ensuring that the electronic expansion valve, etc. Accurate adjustment control of the opening of the throttling device.
  • Figure 1 is a schematic structural diagram of a refrigeration system provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a control method of a refrigeration system provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart of a control method of a refrigeration system provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of the overall structure of a refrigeration system provided by an embodiment of the present disclosure.
  • Fig. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • Refrigerator equipment 11. refrigeration system; 111, condenser; 112, evaporator; 121, first temperature sensor; 122, second temperature sensor; 13, controller; 14, throttling device; 15, compressor; 16. Regenerator; 161. First regenerative cavity; 162. Second regenerative cavity; 500, processor; 501, memory; 502, communication interface; 503, bus.
  • the control method of the refrigeration system 11 can control and adjust the flow opening of the throttling device 14 according to the first temperature of the external environment, the suction temperature of the compressor 15 and the refrigerant subcooling degree at the condenser outlet; It can avoid the complication of the internal structure caused by arranging multiple sensors on the heat exchanger, effectively simplify the internal assembly structure of the refrigeration system 11 and the refrigeration equipment to which it is applied, and still ensure that the electronic expansion valve and other throttling devices 14 Precise adjustment control of opening.
  • Fig. 1 is a schematic structural diagram of a refrigeration system 11 of the present application according to an exemplary embodiment.
  • the refrigeration system 11 includes a refrigerant circulation circuit composed mainly of a condenser 111 for external heat exchange, an evaporator 112 for internal heat exchange, a compressor 15 and a throttling device 14.
  • the refrigeration system 11 also includes a return Heater 16, in which the first regenerative cavity 161 of the regenerator is connected in series with the refrigerant pipe section between the condenser 111 and the throttling device 14, and the second regenerative cavity 162 of the regenerator is connected with the evaporator 112 and compressor
  • the refrigerant pipe sections between 15 are connected in series.
  • the heat regenerator 16 includes a first heat recovery cavity 161 and a second heat recovery cavity 162.
  • the first regenerative cavity 161 of the regenerator is connected in series with the refrigerant pipe section between the condenser 111 and the throttling device 14, and the second regenerative cavity 162 of the regenerator is connected with the refrigerant pipe between the evaporator 112 and the compressor 15 Road series connection.
  • a temperature sensor and a pressure sensor must be installed at the outlet of the evaporator.
  • the evaporator In refrigeration equipment, the evaporator is arranged in the foam layer, so if the temperature sensor and pressure sensor at the outlet of the evaporator are installed, they will be arranged in the foam layer. This will cause the installation and maintenance of the sensor to be very inconvenient.
  • the condenser 111 when the refrigeration system is applied to air conditioning equipment, the condenser 111 is a heat exchanger used for heat exchange between the refrigeration system 11 and the outdoor environment; the evaporator 112 is used for the refrigeration system 11 and the indoor environment.
  • control method includes:
  • the flow opening degree of the throttling device is controlled and adjusted.
  • the embodiment of the present disclosure does not specifically limit the application equipment of the refrigeration system 11, which can be the refrigeration system 11 of the freezer device 1.
  • the refrigeration system 11 is all installed in the shell of the freezer device 1, and the freezer device 1 is generally placed in an indoor environment.
  • the external ambient temperature detected by the first temperature sensor 121 is the indoor ambient temperature.
  • the embodiment of the present disclosure may also be applied to the refrigeration system 11 in air conditioning equipment.
  • the air conditioning equipment generally includes an outdoor unit and an indoor unit, and the external ambient temperature detected by the first temperature sensor 121 is the outdoor ambient temperature.
  • the evaporator 112 flows out the low-temperature and low-pressure gaseous refrigerant, passes through the refrigerant pipeline, and enters the compressor 15.
  • the compressor 15 Through the work of the compressor 15, the refrigerant in the pipeline is compressed into a high-temperature and high-pressure gaseous refrigerant.
  • the suction temperature of the compressor 15 is the temperature of the low-temperature and low-pressure gaseous refrigerant entering the compressor 15.
  • the refrigeration system 11 since the pipeline flowing into the evaporator 112 is a low-temperature and low-pressure liquid refrigerant passing through the evaporator 112, it is difficult to ensure sufficient heat exchange during actual operation, and the refrigerant flowing out of the evaporator 112 may contain gas.
  • the requirements for the refrigerant entering the compressor 15 are very strict and must be gaseous refrigerant. Therefore, in order to ensure that the refrigerant in the refrigerant pipe section between the evaporator 112 and the compressor 15 is all gaseous, here, the refrigeration system 11 The regenerator 16 is added.
  • the refrigerant flows out of the evaporator 112, it then enters the second regenerative cavity 162 of the regenerator, so that the refrigerant in the pipeline is fully heat exchanged, and all of them are gaseous.
  • the second regenerative cavity 162 flows out and enters the gas refrigerant suction port of the compressor 15. At this time, the suction temperature of the compressor 15 is the temperature of the low temperature and low pressure gas refrigerant entering the compressor 15.
  • the embodiment of the present disclosure does not specifically limit the throttling device 14 in the refrigeration system 11. It may be an electronic expansion valve.
  • the electronic expansion valve receives the electrical signal generated by the controller 13, and can adjust the cooling liquid supply volume of the variable capacity refrigeration system steplessly. Wide range, fast adjustment response, and stepless control of the flow opening of the refrigerant passing through the pipeline.
  • the low-temperature and low-pressure gaseous refrigerant enters the compressor 15, after the compressor 15 works, outputs the gaseous high-temperature and high-pressure gaseous refrigerant, enters the refrigerant pipeline, and then enters the condenser 111 and passes through the condenser
  • the heat exchange between 111 and the external environment reduces the temperature of the refrigerant, and outputs gaseous low-temperature and high-pressure gaseous refrigerant.
  • the refrigerant of the throttling device 14 is a low-temperature and low-pressure liquid refrigerant, and then the low-temperature and low-pressure liquid refrigerant enters the evaporator 112 to cool the refrigeration part of the refrigeration system 11.
  • the refrigeration system 11 is used in a refrigerator, and the evaporator 112 is the heat preservation in the refrigerator.
  • the space is cooled to form a refrigeration environment; for example, the refrigeration system 11 is applied to an air conditioner, and the evaporator 112 is installed in the indoor unit of the air conditioner to cool the indoor environment.
  • the refrigeration system 11 can be added to the regenerator 16 When the refrigerant flows out of the condenser 111, it then enters the first regenerative cavity 161 of the regenerator, so that the refrigerant in the pipeline exchanges heat, and at the same time, the refrigerant in the second regenerative cavity 162 of the regenerator Absorb heat, fully vaporize, completely transform into gaseous refrigerant, and enter compressor 15. The refrigerant passing through the first regenerative cavity 161 of the regenerator flows out and enters the throttling device 14 to continue the circulating operation of the refrigerant circulation circuit.
  • Fig. 2 is a schematic flowchart of a control method of the refrigeration system of the present application according to an exemplary embodiment.
  • the present application provides a control method for a refrigeration system, which can control the adjustment section according to the first temperature of the external environment, the suction temperature of the compressor 15, and the degree of refrigerant supercooling at the condenser outlet.
  • the flow opening degree of the flow device 14 therefore, it can avoid the internal structure complexity caused by multiple sensors on the heat exchanger, effectively simplify the internal assembly structure of the refrigeration system and its application refrigeration equipment, and still ensure the electronic Accurate adjustment and control of the opening degree of throttling devices 14 such as expansion valves.
  • the main steps of the control method include:
  • the refrigeration system 11 includes a first temperature sensor 121 disposed at the condenser 111, and the sensor can be used to detect the first temperature of the external environment of the refrigeration system 11; the refrigeration system 11 also includes a first temperature sensor 121 disposed at the point where the gaseous refrigerant enters the compressor 15. The second temperature sensor 122 can be used to detect the suction temperature of the compressor 15 in the heat exchanger system.
  • the second temperature sensor 122 can be far away Compressor configuration, for example, when applied to a refrigerator, the second temperature sensor 122 can be arranged on the pipe section of the air return pipe just out of the foamed layer, wherein the air return pipe is connected to the second heat recovery cavity 162 of the regenerator and the suction port of the compressor .
  • the units of the first temperature and the suction temperature of the refrigeration system 11 are both degrees Celsius.
  • the refrigeration system 11 starts to operate, and the first temperature sensor 121 and the second temperature sensor 122 start to detect the temperature of the external environment and the suction temperature of the compressor 15.
  • the refrigeration system 11 further includes a heat regenerator 16, and the heat regenerator 16 includes a first heat recovery cavity 161 and a second heat recovery cavity 162. Therefore, the refrigeration system 11 includes the first regenerative cavity 161 of the regenerator connected in series with the refrigerant pipe section between the condenser 111 and the throttling device 14, and the refrigeration system 11 also includes the connection between the evaporator 112 and the compressor 15. The second regenerative cavity 162 connected in series with the refrigerant pipeline.
  • the throttling device 14 can be adjusted according to the refrigerant subcooling degree at the outlet of the condenser 111, and compare the refrigerant subcooling degree at the outlet of the condenser 111 with a preset supercooling threshold.
  • the flow opening degree of the throttling device 14 is controlled and adjusted until the first temperature value of the external environment is equal to the preset first temperature threshold value.
  • the flow opening degree of the throttling device is controlled and adjusted.
  • the throttling device 14 may be adjusted according to the first temperature control of the external environment, and compare the first temperature value of the external environment with a preset first temperature threshold. When the first temperature value of the external environment is not equal to the preset temperature When the first temperature threshold is set, the flow opening degree of the throttling device 14 is controlled and adjusted until the first temperature value of the external environment is equal to the preset first temperature threshold value.
  • the specific control method is: when the first temperature value of the external environment is greater than the preset first temperature threshold, controlling to increase the flow opening of the throttling device 14; when the first temperature value of the external environment is less than the preset first temperature threshold At this time, control reduces the flow opening of the throttling device 14 until the first temperature of the external environment is equal to the preset first temperature threshold.
  • control method further includes determining to reduce or increase the opening adjustment rate of the throttle device 14 based on the absolute value of the temperature deviation value between the first temperature value of the external environment and the preset first temperature threshold.
  • the throttling device 14 can be adjusted according to the suction temperature of the compressor 15 to compare the compressed suction temperature with a preset suction temperature threshold.
  • the suction temperature of the compressor 15 is not equal to the preset compression
  • the flow opening of the throttle device 14 is controlled and adjusted until the intake air temperature of the compressor 15 is equal to the preset intake air temperature threshold of the compressor 15.
  • the specific control method is: when the suction temperature value of the compressor 15 is greater than the preset suction temperature threshold, control to reduce the flow opening of the throttling device 14; when the suction temperature value of the compressor 15 is lower than the preset suction temperature threshold The temperature threshold is controlled to increase the flow opening of the throttle device 14 until the suction temperature of the compressor 15 is equal to the preset suction temperature threshold.
  • control method further includes determining to reduce or increase the opening degree of the throttle device 14 based on the absolute value of the temperature deviation between the suction temperature of the compressor 15 and a preset suction temperature threshold of the compressor 15 Adjust the rate.
  • FIG. 3 is a schematic flowchart of a control method of the refrigeration system 11 of the present application shown according to another exemplary embodiment.
  • the present application further provides a control method of the refrigeration system 11, which can control according to the first temperature of the external environment, the suction temperature of the compressor 15, and the degree of refrigerant supercooling at the outlet of the condenser. Adjust the flow opening of the throttling device; therefore, the internal structure complexity caused by the installation of multiple sensors on the heat exchanger can be avoided, and the internal assembly structure of the refrigeration system 11 and its application refrigeration equipment can be effectively simplified, while still ensuring Precise adjustment and control of the opening of throttling devices such as electronic expansion valves.
  • the main steps of the control method include:
  • S301 Calculate the temperature difference between the first temperature of the external environment and the suction temperature of the compressor 15;
  • the controller 13 takes the temperature difference between the first temperature of the external environment and the suction temperature of the compressor 15.
  • S302 Control and adjust the flow opening degree of the throttling device according to the temperature difference value and the preset first difference threshold value, the refrigerant supercooling degree of the refrigerant outlet and the preset supercooling threshold value.
  • the preset difference threshold is used to represent a set of preset difference ranges between the first temperature and the suction temperature, and each difference in the set corresponds to the flow opening of the throttling device 14 controlled by the controller 13 status.
  • controlling and adjusting the flow opening of the throttling device according to the temperature difference and the preset first difference threshold, the refrigerant supercooling degree of the refrigerant outlet and the preset supercooling threshold including: when the temperature difference is greater than When the preset first difference threshold value or the refrigerant supercooling degree of the refrigerant outlet is less than the preset supercooling threshold value, control to reduce the flow opening degree of the throttling device.
  • controlling and adjusting the flow opening of the throttling device according to the temperature difference and the preset first difference threshold, the refrigerant supercooling degree of the refrigerant outlet and the preset supercooling threshold including: when the temperature difference is less than When the preset first difference threshold value and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold value, control to increase the flow opening degree of the throttling device.
  • controlling and adjusting the flow opening of the throttling device according to the temperature difference and a preset first difference threshold, the refrigerant supercooling degree of the refrigerant outlet and the preset supercooling threshold including: when the temperature difference is equal to When the preset first difference threshold value and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold value, the flow opening degree of the throttling device is kept unchanged.
  • the refrigeration system 11 compares the temperature difference between the first temperature of the external environment and the suction temperature of the compressor 15 with a preset difference threshold through the controller 13, when the temperature difference is not equal to the preset difference
  • control and adjust the flow opening of the throttling device 14 until the temperature difference is equal to the difference threshold are: when the temperature difference is greater than the preset difference threshold, control to reduce the flow opening of the throttling device 14; when the temperature difference is less than the preset difference threshold, control to increase the flow of the throttling device 14 Opening.
  • control method further includes determining to reduce or increase the opening adjustment rate of the throttle device 14 based on the absolute value of the temperature deviation between the temperature difference and a preset difference threshold.
  • the specific control method is that the greater the absolute value of the deviation between the temperature difference and the preset difference threshold, the control reduces the opening adjustment rate of the throttle device 14; the temperature difference is between the preset difference threshold The smaller the absolute value of the deviation value is, the control increases the opening adjustment rate of the throttle device 14.
  • the throttling device 14 can be adjusted according to the refrigerant subcooling degree at the outlet of the condenser 111, and compare the refrigerant subcooling degree at the outlet of the condenser 111 with a preset supercooling threshold.
  • the flow opening degree of the throttling device 14 is controlled and adjusted until the first temperature value of the external environment is equal to the preset first temperature threshold value.
  • controlling and adjusting the flow opening of the throttling device according to the temperature difference and the preset first difference threshold, the refrigerant supercooling degree of the refrigerant outlet and the preset supercooling threshold value including:
  • the flow opening degree of the throttling device is controlled and adjusted according to the numerical comparison result of the refrigerant supercooling degree of the refrigerant outlet and the preset supercooling threshold, include:
  • the refrigerant supercooling at the refrigerant outlet is greater than the preset supercooling threshold, control to increase the flow opening of the throttling device; if the refrigerant at the refrigerant outlet is supercooled If it is less than the preset supercooling threshold, the flow opening degree of the throttling device is kept unchanged.
  • determining the refrigerant supercooling degree of the refrigerant outlet of the condenser 111 includes: obtaining the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111; calculating the difference between the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111, Obtain the refrigerant supercooling degree of the refrigerant outlet of the condenser 111;
  • the control method further includes: calculating the first difference between the intermediate refrigerant temperature of the condenser 111 and the external environment. The temperature difference; if the temperature difference between the intermediate refrigerant temperature of the condenser 111 and the first temperature of the external environment is less than the preset second difference threshold, control to reduce the flow opening of the throttling device.
  • control method further includes:
  • Fig. 4 is a schematic diagram showing the overall structure of the refrigeration system 11 of the present application according to an exemplary embodiment.
  • the present application also provides a refrigeration system 11, which includes a condenser 111 for external heat exchange, an evaporator 112 for internal heat exchange, a compressor 15 and a throttling device.
  • the refrigeration system 11 also includes a regenerator 16, wherein the first regenerative cavity 161 of the regenerator is connected in series with the refrigerant pipe section between the condenser 111 and the throttling device, and the second return of the regenerator
  • the heat chamber 162 is connected in series with the refrigerant pipe section between the evaporator 112 and the compressor 15;
  • the refrigeration system 11 also includes: a first temperature sensor 121, used to obtain the external heat exchange with the condenser 111 during the operation of the refrigeration system 11
  • the second temperature sensor 122 is used to obtain the suction temperature of the compressor 15 during the operation of the refrigeration system 11;
  • the controller 13 is used to determine the degree of refrigerant subcooling at the refrigerant outlet of the condenser
  • the heat regenerator 16 includes a first heat recovery cavity 161 and a second heat recovery cavity 162.
  • the first regenerative cavity 161 of the regenerator is connected in series with the refrigerant pipe section between the condenser 111 and the throttling device 14, and the second regenerative cavity 162 of the regenerator is connected with the refrigerant pipe between the evaporator 112 and the compressor 15 Road series connection.
  • the condenser 111 is a heat exchanger for heat exchange between the refrigeration system 11 and the external environment
  • the evaporator 112 is a heat exchanger for heat exchange between the refrigeration system 11 and the indoor environment.
  • the controller 13 can be used to determine the refrigerant subcooling degree of the refrigerant outlet of the condenser 111, that is, the controller 13 can determine the difference between the saturated liquid temperature corresponding to the outlet pressure of the condenser 111 and the actual temperature of the outlet liquid of the condenser 111.
  • the embodiment of the present disclosure does not specifically limit the application equipment of the refrigeration system 11, which can be the refrigeration system 11 of the freezer device 1.
  • the refrigeration system 11 is all installed in the shell of the freezer device 1, and the freezer device 1 is generally placed in an indoor environment.
  • the external ambient temperature detected by the first temperature sensor 121 is the indoor ambient temperature.
  • the embodiment of the present disclosure may also be applied to the refrigeration system 11 in air conditioning equipment.
  • the air conditioning equipment generally includes an outdoor unit and an indoor unit, and the external ambient temperature detected by the first temperature sensor 121 is the outdoor ambient temperature.
  • the evaporator 112 flows out the low-temperature and low-pressure gaseous refrigerant, passes through the refrigerant pipeline, and enters the compressor 15.
  • the compressor 15 Through the work of the compressor 15, the refrigerant in the pipeline is compressed into a high-temperature and high-pressure gaseous refrigerant.
  • the suction temperature of the compressor 15 is the temperature of the low-temperature and low-pressure gaseous refrigerant entering the compressor 15.
  • the second temperature sensor can be arranged on the refrigerant pipeline between the second regenerative cavity 162 and the compressor, and can be on the pipeline close to the compressor side for easy installation.
  • the temperature detected here is also closer to that of the compressor. Inspiratory temperature.
  • the refrigeration system 11 since the pipeline flowing into the evaporator 112 is a low-temperature and low-pressure liquid refrigerant passing through the evaporator 112, it is difficult to ensure sufficient heat exchange during actual operation, and the refrigerant flowing out of the evaporator 112 may contain gas.
  • the requirements for the refrigerant entering the compressor 15 are very strict and must be gaseous refrigerant. Therefore, in order to ensure that the refrigerant in the refrigerant pipe section between the evaporator 112 and the compressor 15 is all gaseous, here, the refrigeration system 11 The regenerator 16 is added.
  • the refrigerant flows out of the evaporator 112, it then enters the second regenerative cavity 162 of the regenerator, so that the refrigerant in the pipeline is fully heat exchanged, and all of them are gaseous.
  • the second regenerative cavity 162 flows out and enters the gas refrigerant suction port of the compressor 15. At this time, the suction temperature of the compressor 15 is the temperature of the low temperature and low pressure gas refrigerant entering the compressor 15.
  • the embodiment of the present disclosure does not specifically limit the throttling device 14 in the refrigeration system 11. It may be an electronic expansion valve.
  • the electronic expansion valve receives the electrical signal generated by the controller 13, and can adjust the cooling liquid supply volume of the variable capacity refrigeration system steplessly. Wide range, fast adjustment response, and stepless control of the flow opening of the refrigerant passing through the pipeline.
  • the low-temperature and low-pressure gaseous refrigerant enters the compressor 15, after the compressor 15 works, outputs the gaseous high-temperature and high-pressure gaseous refrigerant, enters the refrigerant pipeline, and then enters the condenser 111 and passes through the condenser
  • the heat exchange between 111 and the external environment reduces the temperature of the refrigerant, and outputs gaseous low-temperature and high-pressure gaseous refrigerant.
  • the refrigerant of the throttling device 14 is a low-temperature and low-pressure liquid refrigerant, and then the low-temperature and low-pressure liquid refrigerant enters the evaporator 112 to cool the refrigeration part of the refrigeration system 11.
  • the refrigeration system 11 is used in a refrigerator, and the evaporator 112 is the heat preservation in the refrigerator.
  • the space is cooled to form a refrigeration environment; for example, the refrigeration system 11 is applied to an air conditioner, and the evaporator 112 is installed in the indoor unit of the air conditioner to cool the indoor environment.
  • the refrigeration system 11 can be added to a regenerator, When the refrigerant flows out of the condenser 111, it then enters the first regenerative cavity 161 of the regenerator, so that the refrigerant in the pipeline exchanges heat, and at the same time, the refrigerant in the second regenerative cavity 162 of the regenerator absorbs The heat, fully vaporized, is completely converted into gaseous refrigerant, and enters the compressor 15. The refrigerant passing through the first regenerative cavity 161 of the regenerator flows out and enters the throttling device 14 to continue the circulating operation of the refrigerant circulation circuit.
  • the refrigeration system 11 includes a first temperature sensor 121 disposed at the condenser 111, and the sensor can be used to detect the first temperature of the external environment of the refrigeration system 11; the refrigeration system 11 also includes a first temperature sensor 121 disposed at the point where the gaseous refrigerant enters the compressor 15. The second temperature sensor 122 can be used to detect the suction temperature of the compressor 15 in the heat exchanger system.
  • the units of the first temperature and the suction temperature of the refrigeration system 11 are both degrees Celsius.
  • the refrigeration system 11 starts to operate, and the first temperature sensor 121 and the second temperature sensor 122 start to detect the temperature of the external environment and the suction temperature of the compressor 15.
  • the refrigeration system 11 further includes a heat regenerator 16, and the heat regenerator 16 includes a first heat recovery cavity 161 and a second heat recovery cavity 162. Therefore, the refrigeration system 11 includes the first regenerative cavity 161 of the regenerator connected in series with the refrigerant pipe section between the condenser 111 and the throttling device 14, and the refrigeration system 11 also includes the connection between the evaporator 112 and the compressor 15. The second regenerative cavity 162 connected in series with the refrigerant pipeline.
  • the controller 13 is specifically configured to: when the temperature difference is greater than a preset first difference threshold, or the refrigerant supercooling degree of the refrigerant outlet is less than a preset supercooling threshold, control to reduce the flow rate of the throttling device. degree.
  • the controller 13 is specifically configured to: when the temperature difference is less than a preset first difference threshold, and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, control the flow rate increase of the throttle device to turn on degree.
  • the controller 13 is specifically configured to: when the temperature difference is equal to a preset first difference threshold, and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, maintaining the flow opening of the throttling device constant.
  • the controller 13 is specifically configured to determine to reduce or increase the opening adjustment rate of the throttle device based on the absolute value of the temperature deviation between the temperature difference and the preset first difference threshold.
  • the throttling device 14 may be adjusted according to the first temperature control of the external environment, and compare the first temperature value of the external environment with a preset first temperature threshold. When the first temperature value of the external environment is not equal to the preset temperature When the first temperature threshold is set, the flow opening degree of the throttling device 14 is controlled and adjusted until the first temperature value of the external environment is equal to the preset first temperature threshold value.
  • the controller 13 is specifically configured to control to increase the flow opening of the throttling device 14 when the first temperature value of the external environment is greater than the preset first temperature threshold; when the first temperature value of the external environment is less than the preset first temperature
  • the flow opening degree of the throttling device 14 is controlled to decrease until the first temperature of the external environment is equal to the preset first temperature threshold.
  • the controller 13 is also specifically configured to determine to reduce or increase the opening adjustment of the throttle device 14 based on the absolute value of the temperature deviation between the first temperature value of the external environment and the preset first temperature threshold. rate.
  • the throttling device 14 can be adjusted according to the suction temperature of the compressor 15 to compare the compressed suction temperature with a preset suction temperature threshold.
  • the suction temperature of the compressor 15 is not equal to the preset compression
  • the flow opening of the throttle device 14 is controlled and adjusted until the intake air temperature of the compressor 15 is equal to the preset intake air temperature threshold of the compressor 15.
  • the controller 13 is also specifically used to control to reduce the flow opening of the throttle device 14 when the suction temperature value of the compressor 15 is greater than the preset suction temperature threshold; when the suction temperature value of the compressor 15 is less than the preset suction temperature threshold
  • the suction temperature threshold is controlled to increase the flow opening of the throttling device 14 until the suction temperature of the compressor 15 is equal to the preset suction temperature threshold.
  • the controller 13 is also specifically configured to determine whether to reduce or increase the throttle device 14 based on the absolute value of the temperature deviation between the suction temperature of the compressor 15 and a preset suction temperature threshold of the compressor 15 The opening adjustment rate.
  • the controller 13 is specifically configured to: calculate the temperature difference between the first temperature of the external environment and the suction temperature of the compressor 15; according to the temperature difference and a preset difference threshold, control and adjust the throttling device 14 flow opening.
  • the controller 13 takes the temperature difference between the first temperature of the external environment and the suction temperature of the compressor 15.
  • the preset difference threshold is used to represent a set of preset difference ranges between the first temperature and the suction temperature, and each difference in the set corresponds to the flow opening of the throttling device 14 controlled by the controller 13 status.
  • the refrigeration system 11 compares the temperature difference between the first temperature of the external environment and the suction temperature of the compressor 15 with a preset difference threshold through the controller 13, when the temperature difference is not equal to the preset difference When setting the threshold value, control and adjust the flow opening of the throttling device 14 until the temperature difference is equal to the difference threshold.
  • the controller 13 is also specifically configured to control to reduce the flow opening of the throttling device 14 when the temperature difference is greater than the preset difference threshold; when the temperature difference is less than the preset difference threshold, control to increase the throttling device 14 flow opening.
  • the controller 13 is specifically configured to: when the temperature difference is not equal to the preset difference threshold, control and adjust the flow opening of the throttling device 14 until the temperature difference is equal to the difference threshold.
  • the controller 13 is specifically configured to: when the temperature difference is greater than a preset difference threshold, control to decrease the flow opening of the throttling device 14; when the temperature difference is less than the preset difference threshold, control to increase The flow opening of the throttle device 14.
  • the controller 13 is further specifically configured to determine to reduce or increase the opening adjustment rate of the throttling device 14 based on the absolute value of the temperature deviation between the temperature difference and a preset difference threshold.
  • the controller 13 is also specifically configured to: the greater the absolute value of the deviation value between the temperature difference and the preset difference threshold, the lower the adjustment rate of the throttle device 14; the temperature difference and the preset difference The smaller the absolute value of the deviation value between the threshold values, the control increases the opening adjustment rate of the throttle device 14.
  • the throttling device 14 can be adjusted according to the refrigerant subcooling degree at the outlet of the condenser 111, and compare the refrigerant subcooling degree at the outlet of the condenser 111 with a preset supercooling threshold.
  • the flow opening degree of the throttling device 14 is controlled and adjusted until the first temperature value of the external environment is equal to the preset first temperature threshold value.
  • the controller 13 is specifically configured to: when the temperature difference is greater than the preset first difference threshold, if the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, keep the flow opening degree of the throttling device unchanged; If the refrigerant supercooling degree at the refrigerant outlet is less than the preset supercooling threshold, control to reduce the flow opening degree of the throttling device; when the temperature difference is less than the preset first difference threshold, if the refrigerant outlet supercooling degree If it is greater than the preset supercooling threshold, control to increase the flow opening of the throttling device; if the refrigerant supercooling degree of the refrigerant outlet is less than the preset supercooling threshold, keep the flow opening of the throttling device unchanged.
  • determining the degree of refrigerant supercooling at the refrigerant outlet of the condenser 111 specifically includes: obtaining the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111; and calculating the difference between the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111 , Obtain the refrigerant supercooling degree of the refrigerant outlet of the condenser 111; when the temperature difference is greater than the preset first difference threshold, and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, the controller specifically uses ⁇ : Calculate the temperature difference between the intermediate refrigerant temperature of the condenser 111 and the first temperature of the external environment; if the temperature difference between the intermediate refrigerant temperature of the condenser 111 and the first temperature of the external environment is less than the preset second difference threshold , Control to reduce the flow opening of the throttling device.
  • the controller may be specifically configured to determine to reduce or increase the opening adjustment rate of the throttle device based on the absolute value of the temperature deviation between the temperature difference and the preset first difference threshold.
  • the controller 13 is specifically configured to: calculate the temperature difference between the first temperature of the external environment and the suction temperature of the compressor 15; according to the temperature difference and a preset first difference threshold, the refrigerant outlet The refrigerant subcooling degree and the preset subcooling threshold value control and adjust the flow opening degree of the throttling device.
  • the controller 13 is specifically configured to: when the temperature difference is not equal to the preset first difference threshold, control and adjust the throttling according to the comparison result of the refrigerant supercooling degree of the refrigerant outlet and the preset supercooling threshold. The flow opening of the device until the temperature difference is equal to the first difference threshold.
  • the throttling device 14 can be adjusted according to the refrigerant subcooling degree at the outlet of the condenser 111, and compare the refrigerant subcooling degree at the outlet of the condenser 111 with a preset supercooling threshold.
  • the flow opening degree of the throttling device 14 is controlled and adjusted until the first temperature value of the external environment is equal to the preset first temperature threshold value.
  • the controller 13 is specifically configured to: when the temperature difference is greater than the preset first difference threshold, if the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, keep the flow opening degree of the throttling device unchanged; If the refrigerant supercooling degree at the refrigerant outlet is less than the preset supercooling threshold, control to reduce the flow opening degree of the throttling device; when the temperature difference is less than the preset first difference threshold, if the refrigerant outlet supercooling degree If it is greater than the preset supercooling threshold, control to increase the flow opening of the throttling device; if the refrigerant supercooling degree of the refrigerant outlet is less than the preset supercooling threshold, keep the flow opening of the throttling device unchanged.
  • determining the degree of refrigerant supercooling at the refrigerant outlet of the condenser 111 specifically includes: obtaining the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111; and calculating the difference between the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111 , Obtain the refrigerant supercooling degree of the refrigerant outlet of the condenser 111; when the temperature difference is greater than the preset first difference threshold, and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, the controller 13 specifically returns Used to: calculate the temperature difference between the intermediate refrigerant temperature of the condenser 111 and the first temperature of the external environment; if the temperature difference between the intermediate refrigerant temperature of the condenser 111 and the first temperature of the external environment is less than the preset second difference Threshold, control to reduce the flow opening of the throttling device.
  • the controller 13 may also be specifically configured to determine to reduce or increase the opening adjustment rate of the throttle device based on the absolute value of the temperature deviation between the temperature difference and the preset first difference threshold.
  • the embodiment of the present disclosure further provides a freezer device 1 that includes the refrigeration system 11 as described in any of the above optional embodiments.
  • the model of the freezer equipment 1 is not specifically limited.
  • the evaporator 112 of the freezer equipment 1 can be a copper coil evenly laid on the inner side of the insulation layer of the freezer equipment 1, because the evaporator 112 is fixedly installed in the freezer equipment 1.
  • the temperature sensor connected to the controller 13 is installed at the refrigerant inlet or the refrigerant outlet of the evaporator 112, it is very inconvenient to install.
  • the temperature sensor can only be installed when the evaporator 112 leaves the factory. In the event of a fault, it cannot be repaired and the entire evaporator 112 can only be replaced, which is very inconvenient.
  • the embodiment of the present disclosure does not specifically limit the application equipment of the refrigeration system 11. It may be the refrigeration system 11 of the freezer device 1. At this time, the refrigeration system 11 is all installed in the shell of the freezer device 1, and the freezer device 1 is generally When placed in an indoor environment, the external environment temperature detected by the first temperature sensor 121 is the indoor environment temperature.
  • the low-temperature and low-pressure gaseous refrigerant enters the compressor 15, after the compressor 15 works, outputs the gaseous high-temperature and high-pressure gaseous refrigerant, enters the refrigerant pipeline, and then enters the condenser 111 and passes through the condenser
  • the heat exchange between 111 and the external environment reduces the temperature of the refrigerant, and outputs gaseous low-temperature and high-pressure gaseous refrigerant.
  • the refrigerant of the throttling device 14 is a low-temperature and low-pressure liquid refrigerant, and then the low-temperature and low-pressure liquid refrigerant enters the evaporator 112 to cool the refrigeration part of the refrigeration system 11.
  • the refrigeration system 11 is used in a refrigerator, and the evaporator 112 is the heat preservation in the refrigerator.
  • the space is cooled to form a refrigeration environment; for example, the refrigeration system 11 is applied to an air conditioner, and the evaporator 112 is installed in the indoor unit of the air conditioner to cool the indoor environment.
  • the refrigeration system 11 can be added to the regenerator 16 When the refrigerant flows out of the condenser 111, it then enters the first regenerative cavity 161 of the regenerator, so that the refrigerant in the pipeline exchanges heat, and at the same time, the refrigerant in the second regenerative cavity 162 of the regenerator Absorb heat, fully vaporize, completely transform into gaseous refrigerant, and enter compressor 15. The refrigerant passing through the first regenerative cavity 161 of the regenerator flows out and enters the throttling device 14 to continue the circulating operation of the refrigerant circulation circuit.
  • the throttling device 14 can be adjusted according to the refrigerant subcooling degree at the outlet of the condenser 111, and compare the refrigerant subcooling degree at the outlet of the condenser 111 with a preset supercooling threshold.
  • the flow opening degree of the throttling device 14 is controlled and adjusted until the first temperature value of the external environment is equal to the preset first temperature threshold value.
  • the controller 13 is specifically configured to: when the temperature difference is greater than the preset first difference threshold, if the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, keep the flow opening degree of the throttling device unchanged; If the refrigerant supercooling degree at the refrigerant outlet is less than the preset supercooling threshold, control to reduce the flow opening degree of the throttling device; when the temperature difference is less than the preset first difference threshold, if the refrigerant outlet supercooling degree If it is greater than the preset supercooling threshold, control to increase the flow opening of the throttling device; if the refrigerant supercooling degree of the refrigerant outlet is less than the preset supercooling threshold, keep the flow opening of the throttling device unchanged.
  • determining the degree of refrigerant supercooling at the refrigerant outlet of the condenser 111 specifically includes: obtaining the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111; and calculating the difference between the intermediate refrigerant temperature and the refrigerant outlet temperature of the condenser 111 , Obtain the refrigerant supercooling degree of the refrigerant outlet of the condenser 111; when the temperature difference is greater than the preset first difference threshold, and the refrigerant supercooling degree of the refrigerant outlet is greater than the preset supercooling threshold, the controller 13 specifically returns Used to: calculate the temperature difference between the intermediate refrigerant temperature of the condenser 111 and the first temperature of the external environment; if the temperature difference between the intermediate refrigerant temperature of the condenser 111 and the first temperature of the external environment is less than the preset second difference Threshold, control to reduce the flow opening of the throttling device.
  • the controller 13 may also be specifically configured to determine to reduce or increase the opening adjustment rate of the throttle device based on the absolute value of the temperature deviation between the temperature difference and the preset first difference threshold.
  • the embodiment of the present disclosure provides a computer-readable storage medium that stores computer-executable instructions, and the computer-executable instructions are configured to execute the control method of the refrigeration system in any of the above-mentioned optional embodiments.
  • the embodiments of the present disclosure provide a computer program product, the computer program product includes a computer program stored on a computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer program The computer executes the control method of the refrigeration system in any of the above optional embodiments.
  • the aforementioned computer-readable storage medium may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
  • the embodiment of the present disclosure provides an electronic device, the structure of which is shown in FIG. 5, and the electronic device includes:
  • At least one processor (processor) 500 one processor 500 is taken as an example in FIG. 5; and a memory (memory) 501 may also include a communication interface (Communication Interface) 502 and a bus 503. Among them, the processor 500, the communication interface 502, and the memory 501 can communicate with each other through the bus 503. The communication interface 502 can be used for information transmission.
  • the processor 500 may call the logic instructions in the memory 501 to execute the control method of the refrigeration system of the foregoing embodiment.
  • the above-mentioned logical instructions in the memory 501 can be implemented in the form of a software functional unit and when sold or used as an independent product, they can be stored in a computer readable storage medium.
  • the memory 501 can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
  • the processor 500 executes functional applications and data processing by running software programs, instructions, and modules stored in the memory 501, that is, realizes the control method of the refrigeration system in the foregoing method embodiment.
  • the memory 501 may include a program storage area and a data storage area.
  • the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the terminal device, and the like.
  • the memory 501 may include a high-speed random access memory, and may also include a non-volatile memory.
  • the technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which can be a personal computer, a server, or a network). Equipment, etc.) execute all or part of the steps of the method described in the embodiments of the present disclosure.
  • the aforementioned storage medium may be a non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.
  • the first element can be called the second element, and likewise, the second element can be called the first element, as long as all occurrences of the "first element” are renamed consistently and all occurrences "Second component” can be renamed consistently.
  • the first element and the second element are both elements, but they may not be the same element.
  • the terms used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms of "a” (a), “one” (an) and “the” (the) are intended to also include plural forms .
  • the term “and/or” as used in this application refers to any and all possible combinations of one or more of the associated lists.
  • the term “comprise” (comprise) and its variants “comprises” and/or including (comprising) and the like refer to the stated features, wholes, steps, operations, elements, and/or The existence of components does not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and/or groups of these. If there are no more restrictions, the element defined by the sentence “including a" does not exclude the existence of other same elements in the process, method, or device including the element.
  • each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.
  • the methods, products, etc. disclosed in the embodiments if they correspond to the method parts disclosed in the embodiments, see the descriptions in the method parts for relevant points.
  • the disclosed methods and products may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units may only be a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection between devices or units through some interfaces, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs.
  • the functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • each block in the flowchart or block diagram may represent a module, program segment, or part of the code, and the module, program segment, or part of the code contains one or more functions for realizing the specified logical function.
  • Executable instructions may also occur in a different order from the order marked in the drawings. For example, two consecutive blocks can actually be executed in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved.

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Abstract

冷柜设备(1)、制冷系统(11)及其控制方法，属于制冷设备领域。制冷系统(11)包括冷凝器(111)、蒸发器(112)、压缩机(15)和节流装置(14)连接构成的冷媒循环回路，还包括回热器(16)，控制方法包括：获取制冷系统(11)运行过程中，与冷凝器(111)换热的外部环境的第一温度以及压缩机(15)的吸气温度；确定冷凝器(111)的冷媒出口的冷媒过冷度；根据外部环境的第一温度、压缩机(15)的吸气温度以及冷凝器(111)的冷媒出口的冷媒过冷度，控制调整节流装置(14)的流量开度。制冷系统(11)的控制方法无需依赖设置于蒸发器(112)上的传感器所检测到的参数进行开度控制，尤其是对于蒸发器(112)设置于发泡层中的冷柜(1)等制冷设备，有效简化传感器的安装并便于维修，且仍能够保证对电子膨胀阀等节流装置(14)开度的精准调节控制。

Description

一种冷柜设备、制冷系统及其控制方法
本申请基于申请号为201910348273.8、申请日为2019年04月28日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及制冷设备领域，例如涉及一种冷柜设备、制冷系统及其控制方法。
背景技术
电子膨胀阀是一种可按预设程序调节制冷装置的制冷剂流量的节流元件，常用于冷柜、空调等制冷设备的冷媒流量节流控制；特别是在制冷设备运行过程的一些负荷变化较剧烈或运行工况范围较宽的场合，传统的节流元件(如毛细管、热力膨胀阀等)已不能满足舒适性及节能方面的要求，电子膨胀阀作为功能更加全面的节流元件已得到越来越广泛的应用。
电子膨胀阀具有反应和动作速度快的优点，一般从全闭到全开状态其用时仅需几秒钟，开闭特性和速度均可人为设定；电子膨胀阀可在10％-100％的范围内进行精确调节，且调节范围可根据不同制冷设备产品的实际工作需求进行设定。
对于目前的应用电子膨胀阀的制冷设备而言，其电子膨胀阀的控制方法一般是根据制冷设备的蒸发器所检测到的冷媒过热度来调整电子膨胀阀的开度，例如，冷媒过热度较高时则加大电子膨胀阀的开度，冷媒过热度较小时则减小电子膨胀阀的开度。相应的，为实现上述控制流程，制冷设备需要设置有由电子膨胀阀、压力传感器、温度传感器、控制器等部件组成的冷媒过热度控制系统，压力传感器主要负责检测冷媒在蒸发器内的蒸发压力，并将蒸发压力值转变成4mA-20mA的电流信号；温度传感器则可以根据温度的不同生成对应的电阻值信号；控制器则可以接收到压力传感器送来的4mA-20mA电流信号，以及温度传感器的电阻值信号，并根据这些信号确定蒸发器的冷媒过热度，进而通过内置程序发出脉冲信号来控制电子膨胀阀的开度；电子膨胀阀根据接收到的脉冲信号控制膨胀阀开度，保证适量的供液量和合适过热度。
上述控制流程需要在蒸发器的中部或出口位置设置诸如温度传感器和压力传感器等多个传感器；由于冷柜等制冷设备的蒸发器多置于发泡层中，一方面上述传感器安装不方便，另一方面传感器故障时也不易拆装维修。
发明内容
为了对披露的实施例的一些方面有基本的理解，下面给出了简单的概括。所述概括不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围，而是作为 后面的详细说明的序言。
根据本公开实施例的一个方面，提供了一种制冷系统的控制方法。
在一些可选实施例中，制冷系统包括主要由对外换热的冷凝器、对内换热的蒸发器、压缩机和节流装置连接构成的冷媒循环回路，制冷系统还包括回热器，其中，回热器的第一回热腔与冷凝器和节流装置之间的冷媒管段串接，回热器的第二回热腔与蒸发器和压缩机之间的冷媒管段串接；
所述控制方法包括：
获取制冷系统运行过程中，与冷凝器换热的外部环境的第一温度以及压缩机的吸气温度；
确定冷凝器的冷媒出口的冷媒过冷度；
根据外部环境的第一温度、压缩机的吸气温度以及冷凝器的冷媒出口的冷媒过冷度，控制调整节流装置的流量开度。
在一种可选的实施方式中，根据外部环境的第一温度、压缩机的吸气温度以及冷凝器的冷媒出口的冷媒过冷度，控制调整节流装置的流量开度包括：
计算外部环境的第一温度和压缩机的吸气温度之间的温度差值；
根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度。
在一种可选的实施方式中，根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度，包括：
当温度差值大于预设的第一差值阈值，或冷媒出口的冷媒过冷度小于预设的过冷阈值时，控制降低节流装置的流量开度。
在一种可选的实施方式中，根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度，包括：
当温度差值小于预设的第一差值阈值，且冷媒出口的冷媒过冷度大于预设的过冷阈值时，控制提高节流装置的流量开度。
在一种可选的实施方式中，根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度，包括：
当温度差值等于预设的第一差值阈值，且冷媒出口的冷媒过冷度大于预设的过冷阈值时，保持节流装置的流量开度不变。
在一种可选的实施方式中，控制方法还包括：
基于温度差值和预设的第一差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置的开度调整速率。
根据本公开实施例的另一个方面，提供了一种制冷系统。
在一些可选实施例中，制冷系统包括主要由对外换热的冷凝器、对内换热的蒸发器、压缩机和节流装置连接构成的冷媒循环回路，制冷系统还包括回热器，其中，回热器的第 一回热腔与冷凝器和节流装置之间的冷媒管段串接，回热器的第二回热腔与蒸发器和压缩机之间的冷媒管段串接；
制冷系统还包括：
第一温度传感器，用于：获取制冷系统运行过程中，与冷凝器换热的外部环境的第一温度；
第二温度传感器，用于：获取制冷系统运行过程中压缩机的吸气温度；
控制器，用于：确定冷凝器的冷媒出口的冷媒过冷度；
根据外部环境的第一温度、压缩机的吸气温度以及冷凝器的冷媒出口的冷媒过冷度，控制调整节流装置的流量开度。
在一种可选的实施方式中，控制器具体用于：
计算外部环境的第一温度和压缩机的吸气温度之间的温度差值；
根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度。
在一种可选的实施方式中，控制器具体用于：
当温度差值大于预设的第一差值阈值，或冷媒出口的冷媒过冷度小于预设的过冷阈值时，控制降低节流装置的流量开度。
根据本公开实施例的另一个方面，提供了一种冷柜设备。
在一些可选实施例中，所述冷柜设备具有如前任一公开实施例的制冷系统。
本公开实施例提供的一些技术方案可以实现以下技术效果：
本申请提供的制冷系统的控制方法能够根据外部环境的第一温度、压缩机的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置的流量开度；因而无需依赖设置于蒸发器上的传感器所检测到的参数进行开度控制，尤其是对于蒸发器设置于发泡层中的冷柜等制冷设备，有效简化上述传感器的安装并便于维修，且仍能够保证对电子膨胀阀等节流装置的开度的精准调节控制。
以上的总体描述和下文中的描述仅是示例性和解释性的，不用于限制本申请。
附图说明
一个或多个实施例通过与之对应的附图进行示例性说明，这些示例性说明和附图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示为类似的元件，附图不构成比例限制，并且其中：
图1是本公开实施例提供的制冷系统的结构示意图；
图2是本公开实施例提供的制冷系统的控制方法的流程示意图；
图3是本公开实施例提供的制冷系统的控制方法的流程示意图；
图4是本公开实施例提供的制冷系统的整体结构示意图；
图5是本公开实施例提供的电子设备的结构示意图。
附图标记：
1、冷柜设备；11、制冷系统；111、冷凝器；112、蒸发器；121、第一温度传感器；122、第二温度传感器；13、控制器；14、节流装置；15、压缩机；16、回热器；161、第一回热腔；162、第二回热腔；500、处理器；501、存储器；502、通信接口；503、总线。
具体实施方式
为了能够更加详尽地了解本公开实施例的特点与技术内容，下面结合附图对本公开实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本公开实施例。在以下的技术描述中，为方便解释起见，通过多个细节以提供对所披露实施例的充分理解。然而，在没有这些细节的情况下，一个或多个实施例仍然可以实施。在其它情况下，为简化附图，熟知的结构和装置可以简化展示。
本申请实施例中，制冷系统11的控制方法能够根据外部环境的第一温度、压缩机15的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置14的流量开度；因而可以避免因在换热器上设置多个传感器而造成的内部结构复杂化，有效简化制冷系统11及其应用的制冷设备的内部装配结构，且仍能够保证对电子膨胀阀等节流装置14的开度的精准调节控制。
图1是根据一示例性实施例所示出的本申请制冷系统11的结构示意图。如图1所示，制冷系统11包括主要由对外换热的冷凝器111、对内换热的蒸发器112、压缩机15和节流装置14连接构成的冷媒循环回路，制冷系统11还包括回热器16，其中，回热器的第一回热腔161与冷凝器111和节流装置14之间的冷媒管段串接，回热器的第二回热腔162与蒸发器112和压缩机15之间的冷媒管段串接。
本文中，回热器16包括第一回热腔161和第二回热腔162。回热器的第一回热腔161与冷凝器111和节流装置14之间的冷媒管段串接，回热器的第二回热腔162与蒸发器112和压缩机15之间的冷媒管路串接。在包括回热器的制冷系统中，若采用常规的通过检测蒸发器出口冷媒过热度的方法控制节流装置的开度，则需要在蒸发器出口设置温度传感器和压力传感器，而一般的冷柜等制冷设备中，蒸发器设置在发泡层中，所以若设置前述的蒸发器出口处的温度传感器和压力传感器，则会设置在发泡层中，这样，会导致传感器的安装和维修十分不便，考虑到上述问题，在本申请中，我们采用通过检测外部环境的第一温度、压缩机的吸气温度和确定冷凝器出口的冷媒过冷度的方法，控制调整节流装置的流量开度，无需依赖设置于蒸发器上的传感器所检测到的参数进行开度的控制，有效简化传感器的安装并便于维修，且仍能够保证对电子膨胀阀等节流装置开度的精准调节控制。
在一些实施例中，在该制冷系统应用于空调设备的情况下，冷凝器111为用于制冷系统11与室外环境之间换热的换热器；蒸发器112为用于制冷系统11与室内环境之间换热的换热器；在该制冷系统应用于冷柜设备的情况下，冷凝器111为用于制冷系统11与冷柜设备壳体外部所在环境之间换热的换热器；蒸发器112为用于制冷系统11与冷柜设备 壳体内制冷环境之间换热的换热器。
在一些可选实施例中，控制方法包括：
获取制冷系统运行过程中，与冷凝器111换热的外部环境的第一温度以及压缩机15的吸气温度；
确定冷凝器111的冷媒出口的冷媒过冷度；
根据外部环境的第一温度、压缩机15的吸气温度以及冷凝器111的冷媒出口的冷媒过冷度，控制调整节流装置的流量开度。
本公开实施例对制冷系统11的应用设备不做具体限定，可以是冷柜设备1的制冷系统11，此时，制冷系统11全部安装在冷柜设备1的壳体内，冷柜设备1一般放置在室内环境中，第一温度传感器121检测到的外部环境温度为室内环境温度。
本公开实施例对制冷系统11还可以应用在空调设备中，空调设备一般包含室外机和室内机，第一温度传感器121检测到的外部环境温度为室外环境温度。
可选地，制冷系统11中，蒸发器112流出低温低压的气态冷媒，经过冷媒管路，进入压缩机15，通过压缩机15的工作，将管路中的冷媒压缩成高温高压的气态冷媒，压缩机15的吸气温度，即为，进入压缩机15的低温低压气态冷媒的温度。
可选地，制冷系统11中，由于流入蒸发器112的管路中为低温低压的液态冷媒，经过蒸发器112，在实际运行时，难以保证换热充分，蒸发器112流出的冷媒可能存在气液共存的状态，然而，进入压缩机15的冷媒要求十分严格，必须是气态冷媒，所以，为了保证蒸发器112和压缩机15之间的冷媒管段中的冷媒全部为气态，这里，制冷系统11加入了回热器16，当冷媒从蒸发器112流出后，继而进入回热器的第二回热腔162，使管路中的冷媒充分热交换，全部为气态，在从回热器的第二回热腔162流出，进入压缩机15的气态冷媒吸入口，此时，压缩机15的吸气温度，即为，进入压缩机15的低温低压气态冷媒的温度。
本公开实施例对制冷系统11中的节流装置14的不做具体限定，可以是电子膨胀阀，电子膨胀阀接收控制器13产生的电信号，可以无级变容量制冷系统制冷供液量调节范围宽，调节反应快，对通过其管路的制冷剂的流量开度可以实现无级控制。
可选地，在制冷系统11中，低温低压的气态冷媒进入压缩机15，经过压缩机15的工作运行，输出气态高温高压的气态冷媒，进入冷媒管路，然后进入冷凝器111，经过冷凝器111与外部环境的热交换，降低了冷媒的温度，输出气态低温高压的气态冷媒，为了降低冷媒管路中的流量压力，经过节流装置14，如经过局部缩径的冷媒管路，使流出节流装置14的冷媒为低温低压的液态冷媒，进而低温低压的液态冷媒进入蒸发器112，为制冷系统11的制冷部位制冷，如制冷系统11应用在冷柜中，蒸发器112为冷柜内的保温空间制冷，使其形成一个制冷环境；如制冷系统11应用在空调中，蒸发器112即安装在空调室内机中，为室内环境制冷。
可选地，为使冷凝器111输出的低温高压气态冷媒，经过节流装置14尽可能转化为 低温低压的液态冷媒，给蒸发器112提供充分的冷源，制冷系统11可以加入回热器16，当冷媒从冷凝器111流出后，继而进入回热器的第一回热腔161，使管路中的冷媒进行热交换，同时，也使回热器的第二回热腔162中的冷媒吸收热量，充分汽化，完全转化为气态的冷媒，进入压缩机15。而经过回热器的第一回热腔161的冷媒流出，进入节流装置14，继续冷媒循环回路的循环运行。
图2是根据一示例性实施例所示出的本申请制冷系统的控制方法的流程示意图。
如图2所示，本申请提供了一种制冷系统的控制方法，该控制方法能够根据外部环境的第一温度、压缩机15的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置14的流量开度；因而可以避免因在换热器上设置多个传感器而造成的内部结构复杂化，有效简化制冷系统及其应用的制冷设备的内部装配结构，且仍能够保证对电子膨胀阀等节流装置14的开度的精准调节控制。具体的，该控制方法的主要步骤包括：
S1、获取制冷系统运行过程中，与冷凝器111换热的外部环境的第一温度以及压缩机15的吸气温度；
可选地，制冷系统11包括设置于冷凝器111处的第一温度传感器121，该传感器可用于检测制冷系统11外部环境的第一温度；制冷系统11还包括设置于气态冷媒进入压缩机15处的第二温度传感器122，该传感器可用于检测换热器系统中压缩机15的吸气温度，通常，为了避免压缩机壳体高温对第二温度传感器122的干扰，第二温度传感器122可远离压缩机设置，比如应用于冷柜时，第二温度传感器122可以布设于回气管刚出发泡层的管段上，其中，回气管连接回热器的第二回热腔162和压缩机的吸气口。
在本实施例中，制冷系统11的第一温度和吸气温度单位均为摄氏度。
这里，制冷系统11开始运行，第一温度传感器121和第二温度传感器122即对外部环境的温度和压缩机15的吸气温度开始检测操作。
可选地，制冷系统11还包括回热器16，回热器16包括第一回热腔161和第二回热腔162。所以，制冷系统11包括与冷凝器111和节流装置14之间的冷媒管段串联连接的回热器的第一回热腔161，制冷系统11还包括与蒸发器112和压缩机15之间的冷媒管路串联连接的第二回热腔162。
S2、确定冷凝器111的冷媒出口的冷媒过冷度；
可选地，节流装置14可以根据冷凝器111出口处的冷媒过冷度控制调整，将冷凝器111出口处的冷媒过冷度与预设的过冷阈值相比较，当冷凝器111出口处的冷媒过冷度不等于预设的过冷阈值时，控制调整节流装置14的流量开度，直至外部环境的第一温度值与预设的第一温度阈值相等。
S3、根据外部环境的第一温度、压缩机15的吸气温度以及冷凝器111的冷媒出口的冷媒过冷度，控制调整节流装置的流量开度。
可选地，节流装置14可以根据外部环境的第一温度控制调整，将外部环境的第一温度值与预设的第一温度阈值相比较，当外部环境的第一温度值不等于预设的第一温度阈值 时，控制调整节流装置14的流量开度，直至外部环境的第一温度值与预设的第一温度阈值相等。具体控制方法为，当外部环境的第一温度数值大于预设的第一温度阈值时，控制提高节流装置14的流量开度；当外部环境的第一温度数值小于预设的第一温度阈值时，控制降低节流装置14的流量开度，直至外部环境的第一温度与预设的第一温度阈值相等。
可选地，控制方法还包括，基于外部环境的第一温度数值和预设的第一温度阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置14的开度调整速率。
可选地，节流装置14可以根据压缩机15的吸气温度控制调整，将压缩吸气温度与预设的吸气温度阈值相比较，当压缩机15的吸气温度不等于预设的压缩机15的吸气温度阈值时，控制调整节流装置14的流量开度，直至压缩机15的吸气温度与预设的压缩机15的吸气温度阈值相等。具体控制方法为，当压缩机15的吸气温度数值大于预设的吸气温度阈值时，控制降低节流装置14的流量开度；当压缩机15的吸气温度数值小于预设的吸气温度阈值，控制提高节流装置14的流量开度，直至压缩机15的吸气温度与预设的吸气温度阈值相等。
可选地，控制方法还包括，基于压缩机15的吸气温度和预设的压缩机15的吸气温度阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置14的开度调整速率。
图3是根据又一示例性实施例所示出的本申请制冷系统11的控制方法的流程示意图。
如图3所示，本申请进一步提供了一种制冷系统11的控制方法，该控制方法能够根据外部环境的第一温度、压缩机15的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置的流量开度；因而可以避免因在换热器上设置多个传感器而造成的内部结构复杂化，有效简化制冷系统11及其应用的制冷设备的内部装配结构，且仍能够保证对电子膨胀阀等节流装置的开度的精准调节控制。具体的，该控制方法的主要步骤包括：
S301、计算外部环境的第一温度和压缩机15的吸气温度之间的温度差值；
可选地，制冷系统11在运行过程中，当通过第一温度传感器121和第二温度传感器122获取了与冷凝器111换热的外部环境的第一温度以及压缩机15的吸气温度时，将外部环境的第一温度和压缩机15的吸气温度传入控制器13中，控制器13将外部环境的第一温度和压缩机15的吸气温度取温度差值。
S302、根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度。
这里，预设的差值阈值用于表征预设的第一温度和吸气温度的差值的范围的集合，集合中每一个差值对应着控制器13控制的节流装置14的流量开度状态。
可选地，根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度，包括：当温度差值大于预设的第一差值阈值，或冷媒出口的冷媒过冷度小于预设的过冷阈值时，控制降低节流装置的流量开度。
可选地，根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度，包括：当温度差值小于预设的第一差值阈值，且冷 媒出口的冷媒过冷度大于预设的过冷阈值时，控制提高节流装置的流量开度。
可选地，根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度，包括：当温度差值等于预设的第一差值阈值，且冷媒出口的冷媒过冷度大于预设的过冷阈值时，保持节流装置的流量开度不变。
可选地，制冷系统11通过控制器13将外部环境的第一温度和压缩机15的吸气温度的温度差值与预设的差值阈值相比较，当温度差值不等于预设的差值阈值时，控制调整节流装置14的流量开度，直至温度差值等于差值阈值。具体控制方法为，当温度差值大于预设的差值阈值时，控制降低节流装置14的流量开度；当温度差值小于预设的差值阈值时，控制提高节流装置14的流量开度。
可选地，控制方法还包括，基于温度差值和预设的差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置14的开度调整速率。具体控制方法为，温度差值与预设的差值阈值之间的偏差值的绝对值越大，控制降低节流装置14的开度调整速率；温度差值与预设的差值阈值之间的偏差值的绝对值越小，控制提高节流装置14的开度调整速率。
可选地，节流装置14可以根据冷凝器111出口处的冷媒过冷度控制调整，将冷凝器111出口处的冷媒过冷度与预设的过冷阈值相比较，当冷凝器111出口处的冷媒过冷度不等于预设的过冷阈值时，控制调整节流装置14的流量开度，直至外部环境的第一温度值与预设的第一温度阈值相等。
可选地，根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度，包括：
当温度差值不等于预设的第一差值阈值时，根据冷媒出口的冷媒过冷度和预设的过冷阈值的数值比较结果，控制调整节流装置的流量开度，直至温度差值等于第一差值阈值。
可选地，当温度差值不等于预设的第一差值阈值时，根据冷媒出口的冷媒过冷度和预设的过冷阈值的数值比较结果，控制调整节流装置的流量开度，包括：
当温度差值大于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则保持节流装置的流量开度不变；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则控制降低节流装置的流量开度；
当温度差值小于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则控制提高节流装置的流量开度；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则保持节流装置的流量开度不变。
可选地，确定冷凝器111的冷媒出口的冷媒过冷度，包括：获取冷凝器111的中间冷媒温度和冷媒出口温度；计算冷凝器111的中间冷媒温度和冷媒出口温度之间的差值，得到冷凝器111的冷媒出口的冷媒过冷度；
当温度差值大于预设的第一差值阈值、且冷媒出口的冷媒过冷度大于预设的过冷阈值时，控制方法还包括:计算冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值；如果冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值小于预设的第二差值 阈值，则控制降低节流装置的流量开度。
可选地，控制方法还包括：
基于温度差值和预设的第一差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置的开度调整速率。
这样，能够根据外部环境的第一温度、压缩机15的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置的流量开度；因而可以避免因在换热器上设置多个传感器而造成的内部结构复杂化，有效简化制冷系统11及其应用的制冷设备的内部装配结构，且仍能够保证对电子膨胀阀等节流装置的开度的精准调节控制。
图4是根据一示例性实施例所示出的本申请制冷系统11的整体结构示意图。
如图4所示，本申请还提供了一种制冷系统11，该制冷系统11包括主要由对外换热的冷凝器111、对内换热的蒸发器112、压缩机15和节流装置连接构成的冷媒循环回路，制冷系统11还包括回热器16，其中，回热器的第一回热腔161与冷凝器111和节流装置之间的冷媒管段串接，回热器的第二回热腔162与蒸发器112和压缩机15之间的冷媒管段串接；制冷系统11还包括：第一温度传感器121，用于：获取制冷系统11运行过程中，与冷凝器111换热的外部环境的第一温度；第二温度传感器122，用于：获取制冷系统11运行过程中压缩机15的吸气温度；控制器13，用于：确定冷凝器111的冷媒出口的冷媒过冷度；根据外部环境的第一温度、压缩机15的吸气温度以及冷凝器111的冷媒出口的冷媒过冷度，控制调整节流装置的流量开度。
本文中，回热器16包括第一回热腔161和第二回热腔162。回热器的第一回热腔161与冷凝器111和节流装置14之间的冷媒管段串接，回热器的第二回热腔162与蒸发器112和压缩机15之间的冷媒管路串接。
本文中，冷凝器111为用于制冷系统11与外部环境之间换热的换热器；蒸发器112为用于制冷系统11与室内环境之间换热的换热器。
本文中，控制器13可用于确定冷凝器111的冷媒出口的冷媒过冷度，即控制器13可以确定，冷凝器111出口压力对应的饱和液体温度与冷凝器111出口液体的实际温度之差。
本公开实施例对制冷系统11的应用设备不做具体限定，可以是冷柜设备1的制冷系统11，此时，制冷系统11全部安装在冷柜设备1的壳体内，冷柜设备1一般放置在室内环境中，第一温度传感器121检测到的外部环境温度为室内环境温度。
本公开实施例对制冷系统11还可以应用在空调设备中，空调设备一般包含室外机和室内机，第一温度传感器121检测到的外部环境温度为室外环境温度。
可选地，制冷系统11中，蒸发器112流出低温低压的气态冷媒，经过冷媒管路，进入压缩机15，通过压缩机15的工作，将管路中的冷媒压缩成高温高压的气态冷媒，压缩机15的吸气温度，即为，进入压缩机15的低温低压气态冷媒的温度。
这里，第二温度传感器可以设置在第二回热腔162与压缩机之间的冷媒管路上，可以为靠近压缩机侧的管路上，便于安装，此处检测到的温度也更接近压缩机的吸气温度。
可选地，制冷系统11中，由于流入蒸发器112的管路中为低温低压的液态冷媒，经过蒸发器112，在实际运行时，难以保证换热充分，蒸发器112流出的冷媒可能存在气液共存的状态，然而，进入压缩机15的冷媒要求十分严格，必须是气态冷媒，所以，为了保证蒸发器112和压缩机15之间的冷媒管段中的冷媒全部为气态，这里，制冷系统11加入了回热器16，当冷媒从蒸发器112流出后，继而进入回热器的第二回热腔162，使管路中的冷媒充分热交换，全部为气态，在从回热器的第二回热腔162流出，进入压缩机15的气态冷媒吸入口，此时，压缩机15的吸气温度，即为，进入压缩机15的低温低压气态冷媒的温度。
本公开实施例对制冷系统11中的节流装置14的不做具体限定，可以是电子膨胀阀，电子膨胀阀接收控制器13产生的电信号，可以无级变容量制冷系统制冷供液量调节范围宽，调节反应快，对通过其管路的制冷剂的流量开度可以实现无级控制。
可选地，在制冷系统11中，低温低压的气态冷媒进入压缩机15，经过压缩机15的工作运行，输出气态高温高压的气态冷媒，进入冷媒管路，然后进入冷凝器111，经过冷凝器111与外部环境的热交换，降低了冷媒的温度，输出气态低温高压的气态冷媒，为了降低冷媒管路中的流量压力，经过节流装置14，如经过局部缩径的冷媒管路，使流出节流装置14的冷媒为低温低压的液态冷媒，进而低温低压的液态冷媒进入蒸发器112，为制冷系统11的制冷部位制冷，如制冷系统11应用在冷柜中，蒸发器112为冷柜内的保温空间制冷，使其形成一个制冷环境；如制冷系统11应用在空调中，蒸发器112即安装在空调室内机中，为室内环境制冷。
可选地，为使冷凝器111输出的低温高压气态冷媒，经过节流装置14尽可能转化为低温低压的液态冷媒，给蒸发器112提供充分的冷源，制冷系统11可以加入回热器，当冷媒从冷凝器111流出后，继而进入回热器的第一回热腔161，使管路中的冷媒进行热交换，同时，也使回热器的第二回热腔162中的冷媒吸收热量，充分汽化，完全转化为气态的冷媒，进入压缩机15。而经过回热器的第一回热腔161的冷媒流出，进入节流装置14，继续冷媒循环回路的循环运行。
可选地，制冷系统11包括设置于冷凝器111处的第一温度传感器121，该传感器可用于检测制冷系统11外部环境的第一温度；制冷系统11还包括设置于气态冷媒进入压缩机15处的第二温度传感器122，该传感器可用于检测换热器系统中压缩机15的吸气温度。
在本实施例中，制冷系统11的第一温度和吸气温度单位均为摄氏度。
这里，制冷系统11开始运行，第一温度传感器121和第二温度传感器122即对外部环境的温度和压缩机15的吸气温度开始检测操作。
可选地，制冷系统11还包括回热器16，回热器16包括第一回热腔161和第二回热腔162。所以，制冷系统11包括与冷凝器111和节流装置14之间的冷媒管段串联连接的回热器的第一回热腔161，制冷系统11还包括与蒸发器112和压缩机15之间的冷媒管路串联连接的第二回热腔162。
可选地，控制器13具体用于：当温度差值大于预设的第一差值阈值，或冷媒出口的冷媒过冷度小于预设的过冷阈值时，控制降低节流装置的流量开度。
可选地，控制器13具体用于：当温度差值小于预设的第一差值阈值，且冷媒出口的冷媒过冷度大于预设的过冷阈值时，控制提高节流装置的流量开度。
可选地，控制器13具体用于：当温度差值等于预设的第一差值阈值，且冷媒出口的冷媒过冷度大于预设的过冷阈值时，保持节流装置的流量开度不变。
可选地，控制器13具体用于：基于温度差值和预设的第一差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置的开度调整速率。
可选地，节流装置14可以根据外部环境的第一温度控制调整，将外部环境的第一温度值与预设的第一温度阈值相比较，当外部环境的第一温度值不等于预设的第一温度阈值时，控制调整节流装置14的流量开度，直至外部环境的第一温度值与预设的第一温度阈值相等。控制器13具体用于，当外部环境的第一温度数值大于预设的第一温度阈值时，控制提高节流装置14的流量开度；当外部环境的第一温度数值小于预设的第一温度阈值时，控制降低节流装置14的流量开度，直至外部环境的第一温度与预设的第一温度阈值相等。
可选地，控制器13还具体用于，基于外部环境的第一温度数值和预设的第一温度阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置14的开度调整速率。
可选地，节流装置14可以根据压缩机15的吸气温度控制调整，将压缩吸气温度与预设的吸气温度阈值相比较，当压缩机15的吸气温度不等于预设的压缩机15的吸气温度阈值时，控制调整节流装置14的流量开度，直至压缩机15的吸气温度与预设的压缩机15的吸气温度阈值相等。控制器13还具体用于，当压缩机15的吸气温度数值大于预设的吸气温度阈值时，控制降低节流装置14的流量开度；当压缩机15的吸气温度数值小于预设的吸气温度阈值，控制提高节流装置14的流量开度，直至压缩机15的吸气温度与预设的吸气温度阈值相等。
可选地，控制器13还具体用于，基于压缩机15的吸气温度和预设的压缩机15的吸气温度阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置14的开度调整速率。
可选地，控制器13具体用于：计算外部环境的第一温度和压缩机15的吸气温度之间的温度差值；根据温度差值和预设的差值阈值，控制调整节流装置14的流量开度。
可选地，制冷系统11在运行过程中，当通过第一温度传感器121和第二温度传感器122获取了与冷凝器111换热的外部环境的第一温度以及压缩机15的吸气温度时，将外部环境的第一温度和压缩机15的吸气温度传入控制器13中，控制器13将外部环境的第一温度和压缩机15的吸气温度取温度差值。
这里，预设的差值阈值用于表征预设的第一温度和吸气温度的差值的范围的集合，集合中每一个差值对应着控制器13控制的节流装置14的流量开度状态。
可选地，制冷系统11通过控制器13将外部环境的第一温度和压缩机15的吸气温度 的温度差值与预设的差值阈值相比较，当温度差值不等于预设的差值阈值时，控制调整节流装置14的流量开度，直至温度差值等于差值阈值。控制器13还具体用于，当温度差值大于预设的差值阈值时，控制降低节流装置14的流量开度；当温度差值小于预设的差值阈值时，控制提高节流装置14的流量开度。
可选地，控制器13具体用于：当温度差值不等于预设的差值阈值时，控制调整节流装置14的流量开度，直至温度差值等于差值阈值。
可选地，控制器13具体用于：当温度差值大于预设的差值阈值时，控制降低节流装置14的流量开度；当温度差值小于预设的差值阈值时，控制提高节流装置14的流量开度。
可选地，控制器13还具体用于，基于温度差值和预设的差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置14的开度调整速率。控制器13还具体用于，温度差值与预设的差值阈值之间的偏差值的绝对值越大，控制降低节流装置14的开度调整速率；温度差值与预设的差值阈值之间的偏差值的绝对值越小，控制提高节流装置14的开度调整速率。
可选地，节流装置14可以根据冷凝器111出口处的冷媒过冷度控制调整，将冷凝器111出口处的冷媒过冷度与预设的过冷阈值相比较，当冷凝器111出口处的冷媒过冷度不等于预设的过冷阈值时，控制调整节流装置14的流量开度，直至外部环境的第一温度值与预设的第一温度阈值相等。控制器13具体用于，当温度差值大于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则保持节流装置的流量开度不变；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则控制降低节流装置的流量开度；当温度差值小于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则控制提高节流装置的流量开度；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则保持节流装置的流量开度不变。
可选地，确定冷凝器111的冷媒出口的冷媒过冷度，具体包括：获取冷凝器111的中间冷媒温度和冷媒出口温度；计算冷凝器111的中间冷媒温度和冷媒出口温度之间的差值，得到冷凝器111的冷媒出口的冷媒过冷度；当温度差值大于预设的第一差值阈值、且冷媒出口的冷媒过冷度大于预设的过冷阈值时，控制器具体还用于:计算冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值；如果冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值小于预设的第二差值阈值，则控制降低节流装置的流量开度。
可选地，控制器具体还可以用于，基于温度差值和预设的第一差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置的开度调整速率。
这样，能够根据外部环境的第一温度、压缩机15的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置的流量开度；因而可以避免因在换热器上设置多个传感器而造成的内部结构复杂化，有效简化制冷系统及其应用的制冷设备的内部装配结构，且仍能够保证对电子膨胀阀等节流装置的开度的精准调节控制。
可选地，控制器13具体用于：计算外部环境的第一温度和压缩机15的吸气温度之间 的温度差值；根据温度差值和预设的第一差值阈值、冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整节流装置的流量开度。
可选地，控制器13具体用于：温度差值不等于预设的第一差值阈值时，根据冷媒出口的冷媒过冷度和预设的过冷阈值的数值比较结果，控制调整节流装置的流量开度，直至温度差值等于第一差值阈值。
可选地，节流装置14可以根据冷凝器111出口处的冷媒过冷度控制调整，将冷凝器111出口处的冷媒过冷度与预设的过冷阈值相比较，当冷凝器111出口处的冷媒过冷度不等于预设的过冷阈值时，控制调整节流装置14的流量开度，直至外部环境的第一温度值与预设的第一温度阈值相等。控制器13具体用于，当温度差值大于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则保持节流装置的流量开度不变；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则控制降低节流装置的流量开度；当温度差值小于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则控制提高节流装置的流量开度；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则保持节流装置的流量开度不变。
可选地，确定冷凝器111的冷媒出口的冷媒过冷度，具体包括：获取冷凝器111的中间冷媒温度和冷媒出口温度；计算冷凝器111的中间冷媒温度和冷媒出口温度之间的差值，得到冷凝器111的冷媒出口的冷媒过冷度；当温度差值大于预设的第一差值阈值、且冷媒出口的冷媒过冷度大于预设的过冷阈值时，控制器13具体还用于:计算冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值；如果冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值小于预设的第二差值阈值，则控制降低节流装置的流量开度。
可选地，控制器13具体还可以用于，基于温度差值和预设的第一差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置的开度调整速率。
这样，能够根据外部环境的第一温度、压缩机15的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置的流量开度；因而可以避免因在换热器上设置多个传感器而造成的内部结构复杂化，有效简化制冷系统11及其应用的制冷设备的内部装配结构，且仍能够保证对电子膨胀阀等节流装置的开度的精准调节控制。
本公开实施例进一步提供了一种冷柜设备1，该冷柜设备1包括如上述任意可选实施例所述的制冷系统11。
本文中，对冷柜设备1的型号不做具体限定，冷柜设备1的蒸发器112可以为均匀铺设在冷柜设备1箱体保温层内侧的铜盘管，由于蒸发器112固定设置在冷柜设备1的保温层内侧部分，若与控制器13连接的温度传感器设置在蒸发器112的冷媒入口或者冷媒出口，则十分不便安装，只能在蒸发器112出厂时就安装有温度传感器，这样，当温度传感器出现故障时，无法维修，只能更换整个蒸发器112，十分不便。
可选地，本公开实施例对制冷系统11的应用设备不做具体限定，可以是冷柜设备1的制冷系统11，此时，制冷系统11全部安装在冷柜设备1的壳体内，冷柜设备1一般放 置在室内环境中，第一温度传感器121检测到的外部环境温度为室内环境温度。
可选地，在制冷系统11中，低温低压的气态冷媒进入压缩机15，经过压缩机15的工作运行，输出气态高温高压的气态冷媒，进入冷媒管路，然后进入冷凝器111，经过冷凝器111与外部环境的热交换，降低了冷媒的温度，输出气态低温高压的气态冷媒，为了降低冷媒管路中的流量压力，经过节流装置14，如经过局部缩径的冷媒管路，使流出节流装置14的冷媒为低温低压的液态冷媒，进而低温低压的液态冷媒进入蒸发器112，为制冷系统11的制冷部位制冷，如制冷系统11应用在冷柜中，蒸发器112为冷柜内的保温空间制冷，使其形成一个制冷环境；如制冷系统11应用在空调中，蒸发器112即安装在空调室内机中，为室内环境制冷。
可选地，为使冷凝器111输出的低温高压气态冷媒，经过节流装置14尽可能转化为低温低压的液态冷媒，给蒸发器112提供充分的冷源，制冷系统11可以加入回热器16，当冷媒从冷凝器111流出后，继而进入回热器的第一回热腔161，使管路中的冷媒进行热交换，同时，也使回热器的第二回热腔162中的冷媒吸收热量，充分汽化，完全转化为气态的冷媒，进入压缩机15。而经过回热器的第一回热腔161的冷媒流出，进入节流装置14，继续冷媒循环回路的循环运行。
可选地，节流装置14可以根据冷凝器111出口处的冷媒过冷度控制调整，将冷凝器111出口处的冷媒过冷度与预设的过冷阈值相比较，当冷凝器111出口处的冷媒过冷度不等于预设的过冷阈值时，控制调整节流装置14的流量开度，直至外部环境的第一温度值与预设的第一温度阈值相等。控制器13具体用于，当温度差值大于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则保持节流装置的流量开度不变；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则控制降低节流装置的流量开度；当温度差值小于预设的第一差值阈值时，如果冷媒出口的冷媒过冷度大于预设的过冷阈值，则控制提高节流装置的流量开度；如果冷媒出口的冷媒过冷度小于预设的过冷阈值，则保持节流装置的流量开度不变。
可选地，确定冷凝器111的冷媒出口的冷媒过冷度，具体包括：获取冷凝器111的中间冷媒温度和冷媒出口温度；计算冷凝器111的中间冷媒温度和冷媒出口温度之间的差值，得到冷凝器111的冷媒出口的冷媒过冷度；当温度差值大于预设的第一差值阈值、且冷媒出口的冷媒过冷度大于预设的过冷阈值时，控制器13具体还用于:计算冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值；如果冷凝器111的中间冷媒温度与外部环境的第一温度的温度差值小于预设的第二差值阈值，则控制降低节流装置的流量开度。
可选地，控制器13具体还可以用于，基于温度差值和预设的第一差值阈值之间的温度偏差值的绝对值，确定降低或者提高节流装置的开度调整速率。
这样，能够根据外部环境的第一温度、压缩机15的吸气温度和冷凝器出口的冷媒过冷度，控制调整节流装置的流量开度；因而可以避免因在换热器上设置多个传感器而造成的内部结构复杂化，有效简化制冷系统11及其应用的制冷设备的内部装配结构，且仍能 够保证对电子膨胀阀等节流装置的开度的精准调节控制。
本公开实施例提供了一种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设置为执行上述任一可选实施例中制冷系统的控制方法。
本公开实施例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，使所述计算机执行上述任一可选实施例中制冷系统的控制方法。
上述的计算机可读存储介质可以是暂态计算机可读存储介质，也可以是非暂态计算机可读存储介质。
本公开实施例提供了一种电子设备，其结构如图5所示，该电子设备包括：
至少一个处理器(processor)500，图5中以一个处理器500为例；和存储器(memory)501，还可以包括通信接口(Communication Interface)502和总线503。其中，处理器500、通信接口502、存储器501可以通过总线503完成相互间的通信。通信接口502可以用于信息传输。处理器500可以调用存储器501中的逻辑指令，以执行上述实施例的制冷系统的控制方法。
此外，上述的存储器501中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。
存储器501作为一种计算机可读存储介质，可用于存储软件程序、计算机可执行程序，如本公开实施例中的方法对应的程序指令/模块。处理器500通过运行存储在存储器501中的软件程序、指令以及模块，从而执行功能应用以及数据处理，即实现上述方法实施例中的制冷系统的控制方法。
存储器501可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、至少一个功能所需的应用程序；存储数据区可存储根据终端设备的使用所创建的数据等。此外，存储器501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。
本公开实施例的技术方案可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括一个或多个指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开实施例所述方法的全部或部分步骤。而前述的存储介质可以是非暂态存储介质，包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等多种可以存储程序代码的介质，也可以是暂态存储介质。
以上描述和附图充分地示出了本公开的实施例，以使本领域的技术人员能够实践它们。其他实施例可以包括结构的、逻辑的、电气的、过程的以及其他的改变。实施例仅代表可能的变化。除非明确要求，否则单独的部件和功能是可选的，并且操作的顺序可以变化。一些实施例的部分和特征可以被包括在或替换其他实施例的部分和特征。本公开实施例的范围包括权利要求书的整个范围，以及权利要求书的所有可获得的等同物。当用于本申请中时，虽然术语“第一”、“第二”等可能会在本申请中使用以描述各元件，但这些 元件不应受到这些术语的限制。这些术语仅用于将一个元件与另一个元件区别开。比如，在不改变描述的含义的情况下，第一元件可以叫做第二元件，并且同样第，第二元件可以叫做第一元件，只要所有出现的“第一元件”一致重命名并且所有出现的“第二元件”一致重命名即可。第一元件和第二元件都是元件，但可以不是相同的元件。而且，本申请中使用的用词仅用于描述实施例并且不用于限制权利要求。如在实施例以及权利要求的描述中使用的，除非上下文清楚地表明，否则单数形式的“一个”(a)、“一个”(an)和“所述”(the)旨在同样包括复数形式。类似地，如在本申请中所使用的术语“和/或”是指包含一个或一个以上相关联的列出的任何以及所有可能的组合。另外，当用于本申请中时，术语“包括”(comprise)及其变型“包括”(comprises)和/或包括(comprising)等指陈述的特征、整体、步骤、操作、元素，和/或组件的存在，但不排除一个或一个以上其它特征、整体、步骤、操作、元素、组件和/或这些的分组的存在或添加。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法或者设备中还存在另外的相同要素。本文中，每个实施例重点说明的可以是与其他实施例的不同之处，各个实施例之间相同相似部分可以互相参见。对于实施例公开的方法、产品等而言，如果其与实施例公开的方法部分相对应，那么相关之处可以参见方法部分的描述。
本领域技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，可以取决于技术方案的特定应用和设计约束条件。所述技术人员可以对每个特定的应用来使用不同方法以实现所描述的功能，但是这种实现不应认为超出本公开实施例的范围。所述技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
本文所披露的实施例中，所揭露的方法、产品(包括但不限于装置、设备等)，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，可以仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。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单元来实现本实施例。另外，在本公开实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
附图中的流程图和框图显示了根据本公开实施例的系统、方法和计算机程序产品的可 能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。在附图中的流程图和框图所对应的描述中，不同的方框所对应的操作或步骤也可以以不同于描述中所披露的顺序发生，有时不同的操作或步骤之间不存在特定的顺序。例如，两个连续的操作或步骤实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。

Claims (10)

  1. 一种制冷系统的控制方法，所述制冷系统包括主要由对外换热的冷凝器、对内换热的蒸发器、压缩机和节流装置连接构成的冷媒循环回路，其特征在于，所述制冷系统还包括回热器，其中，所述回热器的第一回热腔与所述冷凝器和所述节流装置之间的冷媒管段串接，第二回热腔与所述蒸发器和所述压缩机之间的冷媒管段串接；
    所述控制方法包括：
    获取制冷系统运行过程中，与所述冷凝器换热的外部环境的第一温度以及所述压缩机的吸气温度；
    确定所述冷凝器出口的冷媒过冷度；
    根据所述外部环境的第一温度、所述压缩机的吸气温度以及所述冷凝器出口的冷媒过冷度，控制调整所述节流装置的流量开度。
  2. 根据权利要求1所述的控制方法，其特征在于，所述根据所述外部环境的第一温度、所述压缩机的吸气温度以及所述冷凝器出口的冷媒过冷度，控制调整所述节流装置的流量开度包括：
    计算所述外部环境的第一温度和所述压缩机的吸气温度之间的温度差值；
    根据所述温度差值和预设的第一差值阈值、所述冷凝器出口的冷媒过冷度和预设的过冷阈值，控制调整所述节流装置的流量开度。
  3. 根据权利要求2所述的控制方法，其特征在于，所述根据所述温度差值和预设的第一差值阈值、所述冷凝器出口的冷媒过冷度和预设的过冷阈值，控制调整所述节流装置的流量开度，包括：
    当所述温度差值大于所述预设的第一差值阈值，或所述冷媒出口的冷媒过冷度小于所述预设的过冷阈值时，控制降低所述节流装置的流量开度。
  4. 根据权利要求2所述的控制方法，其特征在于，所述根据所述温度差值和预设的第一差值阈值、所述冷凝器出口的冷媒过冷度和预设的过冷阈值，控制调整所述节流装置的流量开度，包括：
    当所述温度差值小于所述预设的第一差值阈值，且所述冷凝器出口的冷媒过冷度大于所述预设的过冷阈值时，控制提高所述节流装置的流量开度。
  5. 根据权利要求2所述的控制方法，其特征在于，所述根据所述温度差值和预设的第一差值阈值、所述冷媒出口的冷媒过冷度和预设的过冷阈值，控制调整所述节流装置的流量开度，包括：
    当所述温度差值等于所述预设的第一差值阈值，且所述冷媒出口的冷媒过冷度大于所述预设的过冷阈值时，保持所述节流装置的流量开度不变。
  6. 根据权利要求2所述的控制方法，其特征在于，所述控制方法还包括：
    基于所述温度差值和所述预设的第一差值阈值之间的温度偏差值的绝对值，确定降低或者提高所述节流装置的开度调整速率。
  7. 一种制冷系统，所述制冷系统包括主要由对外换热的冷凝器、对内换热的蒸发器、压缩机和节流装置连接构成的冷媒循环回路，其特征在于，所述制冷系统还包括回热器，其中，所述回热器的第一回热腔与所述冷凝器和所述节流装置之间的冷媒管段串接，第二回热腔与所述蒸发器和所述压缩机之间的冷媒管段串接；
    所述制冷系统还包括：
    第一温度传感器，用于：获取制冷系统运行过程中，与所述冷凝器换热的外部环境的第一温度；
    第二温度传感器，用于：获取制冷系统运行过程中所述压缩机的吸气温度；
    控制器，用于：确定所述冷凝器出口的冷媒过冷度；
    根据所述外部环境的第一温度、所述压缩机的吸气温度以及所述冷凝器出口的冷媒过冷度，控制调整所述节流装置的流量开度。
  8. 根据权利要求7所述的制冷系统，其特征在于，所述控制器具体用于：
    计算所述外部环境的第一温度和所述压缩机的吸气温度之间的温度差值；
    根据所述温度差值和预设的第一差值阈值、所述冷凝器出口的冷媒过冷度和预设的过冷阈值，控制调整所述节流装置的流量开度。
  9. 根据权利要求8所述的制冷系统，其特征在于，所述控制器具体用于：
    当所述温度差值大于所述预设的第一差值阈值，或所述冷凝器出口的冷媒过冷度小于所述预设的过冷阈值时，控制降低所述节流装置的流量开度。
  10. 一种冷柜设备，其特征在于，所述冷柜设备具有如权利要求7至9的任一项所述的制冷系统。
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