WO2019196479A1 - 机组高落差压力控制方法、装置及空调设备 - Google Patents

机组高落差压力控制方法、装置及空调设备 Download PDF

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Publication number
WO2019196479A1
WO2019196479A1 PCT/CN2018/121225 CN2018121225W WO2019196479A1 WO 2019196479 A1 WO2019196479 A1 WO 2019196479A1 CN 2018121225 W CN2018121225 W CN 2018121225W WO 2019196479 A1 WO2019196479 A1 WO 2019196479A1
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WIPO (PCT)
Prior art keywords
preset value
eev
exhaust
internal
opening degree
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/121225
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English (en)
French (fr)
Inventor
苏玉海
熊建国
张仕强
焦华超
武连发
高晗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to ES18914265T priority Critical patent/ES2981171T3/es
Priority to EP18914265.6A priority patent/EP3764012B1/en
Publication of WO2019196479A1 publication Critical patent/WO2019196479A1/zh
Priority to US17/066,784 priority patent/US12066225B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using 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
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/10—Pressure
    • F24F2140/12—Heat-exchange fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices

Definitions

  • the present application relates to the technical field of a unit, and in particular to a method, a device and an air conditioning device for controlling a high drop pressure of a unit.
  • a method for controlling a high drop pressure of a unit includes: monitoring an operation mode of the unit; acquiring a corresponding operation parameter according to the operation mode; and adjusting according to the operation parameter The opening of the electronic expansion valve EEV.
  • the operation mode includes at least one of the following: a cooling mode and a heating mode.
  • obtaining corresponding operation parameters according to the operation mode includes: acquiring an internal pipe temperature in the cooling mode, an opening degree of the internal machine EEV, a module low pressure, and an exhaust temperature.
  • obtaining corresponding operation parameters according to the operation mode includes: acquiring an internal tube temperature, a module low pressure, and an exhaust temperature in the heating mode.
  • the operation mode is the cooling mode, adjusting the opening degree of the EEV according to the operating parameter, if: the operating parameter satisfies the first preset condition, the opening degree of the external EEV is increased;
  • the first preset condition is: the opening degree of the internal machine EEV is less than a preset value of the opening degree or determining that the internal superheat degree is less than the superheat preset value according to the internal machine tube temperature, and the module low pressure is less than a preset value of the pressure, and determining that the exhaust superheat is greater than the exhaust preset value according to the exhaust temperature; if the operating parameter satisfies the second preset condition, the opening degree of the external EEV is reduced; wherein
  • the second preset condition is: the opening degree of the internal machine EEV is greater than the opening degree preset value, and the internal superheat degree is determined to be greater than the overheating preset value according to the internal machine tube temperature, and the module low pressure is greater than the pressure preset a value, and determining that
  • adjusting an opening degree of the EEV according to the operating parameter includes: if the operating parameter satisfies a third preset condition, reducing an opening degree of the internal machine EEV
  • the third preset condition is: determining, according to the inner tube temperature, that the internal cooling degree is less than a pre-cooling preset value, the module low pressure is less than the pressure preset value, and determining the exhaust gas based on the exhaust temperature The heat is greater than the exhaust preset value; if the operating parameter satisfies the fourth preset condition, the opening degree of the internal machine EEV is increased; wherein the fourth preset condition is: determining according to the inner tube temperature The internal subcooling is greater than the superheat preset value, the module low pressure is greater than the pressure preset value, and the exhaust superheat is determined to be less than the exhaust preset value according to the exhaust temperature.
  • adjusting the opening degree of the EEV according to the operating parameter comprising: according to a difference between the module low pressure and the pressure preset value, and the exhaust superheat degree and the exhaust preset value The difference is the adjustment of the opening of the EEV.
  • the present application also provides a unit high drop pressure control device, wherein the device includes: a monitoring module for monitoring an operating mode of the unit; and a parameter obtaining module for acquiring a corresponding operating parameter according to the operating mode; And a module for adjusting an opening degree of the electronic expansion valve EEV according to the operating parameter.
  • the operation mode includes at least one of the following: a cooling mode and a heating mode.
  • the parameter acquisition module is configured to acquire an internal tube temperature in the cooling mode, an opening degree of the internal machine EEV, a module low pressure, and an exhaust temperature.
  • the parameter acquisition module is configured to acquire an internal tube temperature, a module low pressure, and an exhaust temperature in the heating mode.
  • the adjustment module includes: a first adjustment unit, configured to increase an opening degree of the external EEV when the operating parameter satisfies the first preset condition;
  • the first preset condition is: the opening degree of the internal machine EEV is less than a preset value of the opening degree or determining that the internal superheat degree is less than the superheat preset value according to the internal machine tube temperature, and the module low pressure is less than a preset value of the pressure, and determining that the exhaust superheat is greater than the exhaust preset value according to the exhaust temperature; and a second adjusting unit, configured to: when the operating parameter satisfies the second preset condition, the external EEV The opening condition is small; wherein, the second preset condition is: the opening degree of the internal machine EEV is greater than a preset value of the opening degree or determining that the internal heating degree is greater than the preset value of the overheating according to the internal tube temperature, And the module low pressure is greater than the pressure preset value, and
  • the adjustment module includes: a third adjustment unit, configured to reduce the opening degree of the internal machine EEV when the operating parameter satisfies the third preset condition
  • the third preset condition is: determining, according to the inner tube temperature, that the internal cooling degree is less than a pre-cooling preset value, the module low pressure is less than the pressure preset value, and determining the exhaust gas based on the exhaust temperature
  • the fourth preset unit is configured to increase the opening degree of the internal machine EEV when the operating parameter satisfies the fourth preset condition; wherein the fourth preset condition is According to the inner tube temperature, the internal subcooling is greater than the superheat preset value, the module low pressure is greater than the pressure preset value, and the exhaust superheat is determined to be less than the exhaust preset value according to the exhaust temperature.
  • the adjustment module is specifically configured to adjust the EEV according to a difference between the module low pressure and the pressure preset value, and a difference between the exhaust superheat and the exhaust preset value. Opening.
  • the present application also provides an air conditioning apparatus, wherein the air conditioning apparatus includes the above-described unit high drop pressure control device.
  • the corresponding operating parameters are detected in different operating modes of the unit, and the opening degree of the internal and external machines EEV is adjusted according to the operating parameters, thereby changing the intermediate pressure of the refrigerant circulation to ensure that the system has sufficient power to promote the refrigerant. cycle. It reduces the adverse effects of high and low internal and external unit fluctuations on refrigerant circulation, improves unit performance and improves the flexibility of engineering installation.
  • FIG. 1 is a flow chart of a method for controlling a high drop pressure of a unit according to one or more embodiments of the present application
  • FIG. 2 is a flow chart of a system refrigerant control method according to one or more embodiments of the present application
  • FIG. 3 is a block diagram showing the structure of a unit high drop pressure control device in accordance with one or more embodiments of the present application.
  • FIG. 1 is a flow chart of a method for controlling a high drop pressure of a unit according to an embodiment of the present application. As shown in FIG. 1, the method includes the following steps:
  • Step S101 monitoring the operation mode of the unit
  • Step S102 acquiring corresponding operating parameters according to the operating mode
  • Step S103 adjusting the opening degree of the electronic expansion valve EEV according to the operating parameter.
  • the corresponding parameters are obtained in different operating modes of the unit, and the opening degree of the internal and external machines EEV is adjusted according to the parameters, thereby changing the intermediate pressure of the refrigerant circulation, and ensuring that the system has sufficient power to promote the refrigerant circulation. It reduces the adverse effects of high and low internal and external unit fluctuations on refrigerant circulation, improves unit performance and improves the flexibility of engineering installation.
  • the unit operating mode involved in this embodiment may include at least one of the following: a cooling mode and a heating mode. If the operation mode is the cooling mode, the internal pipe temperature in the cooling mode, the opening degree of the internal machine EEV, the module low pressure, and the exhaust temperature are obtained. If the operation mode is the heating mode, the internal pipe temperature, the module low pressure, and the exhaust temperature in the heating mode are obtained. Since the common mode of the air conditioner is basically the cooling mode and the heating mode, the present application focuses on the EEV opening adjustment in the two operating modes. Of course, for other operating modes of the air conditioner, the opening degree of the internal and external EEVs can also be adjusted according to the corresponding parameters. Based on this, the corresponding parameters are obtained for different operation modes, and the current operating condition of the unit and the system pressure can be accurately evaluated, which provides a basis for the subsequent accurate adjustment of the EEV opening.
  • the technical solution of the embodiment is to control the intermediate pressure of the system by adjusting the opening degree of the internal and external machines EEV.
  • different control modes are adopted because the system refrigerant circulation direction is different.
  • the intermediate pressure section of the system is located after the external EEV and before the internal machine EEV.
  • the main operating parameters include: internal pipe temperature, internal EEV opening, module high and low pressure, exhaust temperature and other parameters.
  • the internal machine EEV opening is less than the preset value or the internal machine superheat (according to the internal pipe temperature can determine the internal superheat) less than the preset value
  • the module low pressure is less than the preset value
  • exhaust The degree of superheat determining the exhaust superheat according to the exhaust temperature
  • the external EEV opening degree is adjusted to be larger, and the adjustment range of the external EEV opening degree is compared with the two.
  • the magnitude of the difference is related. The larger the difference, the larger the adjustment.
  • the ultimate goal is to reduce the difference between the module low voltage and the corresponding preset value and the difference between the exhaust superheat and the corresponding preset value, increase the intermediate pressure of the system, and promote the refrigerant circulation at the internal machine.
  • the system intermediate pressure is determined High, circulating power makes the amount of refrigerant in the external machine too much.
  • the adjustment of the external EEV opening degree becomes small, and the adjustment range of the external EEV opening degree and the two differences are The size of the value is related. The larger the difference, the larger the adjustment.
  • the ultimate goal is to reduce the difference between the module low voltage and the corresponding preset value and the difference between the exhaust superheat and the corresponding preset value, reduce the intermediate pressure of the system, and control the refrigerant circulation amount within a reasonable range.
  • the present embodiment provides a preferred embodiment, that is, in the cooling mode, if the operating parameter satisfies the first preset condition, the opening degree of the external EEV is increased; wherein the first preset condition is : The opening degree of the internal machine EEV is less than the preset value of the opening degree.
  • the internal pipe temperature the internal superheat is less than the preset value of the superheat, the low pressure of the module is less than the preset value of the pressure, and the superheat of the exhaust is determined to be greater than the exhaust temperature.
  • Exhaust preset value if the running parameter satisfies the second preset condition, the opening degree of the external EEV is reduced; wherein, the second preset condition is: the opening degree of the internal machine EEV is greater than the preset value of the opening degree, according to The internal tube temperature determines that the internal machine superheat is greater than the overheat preset value, the module low pressure is greater than the pressure preset value, and the exhaust superheat is determined to be less than the exhaust preset value according to the exhaust temperature.
  • the intermediate pressure of the system can be grasped in real time according to the operating parameters, so that the intermediate pressure of the system can be controlled, so that the refrigerant circulation amount is within a reasonable range, and the system has sufficient power to promote the refrigerant circulation. It reduces the adverse effects of high and low internal and external units on the refrigerant circulation and improves the performance of the unit.
  • the intermediate pressure section is located after the internal machine EEV and before the external machine EEV.
  • the main operating parameters include: internal pipe temperature, external EEV opening, module high and low pressure, exhaust temperature and other parameters.
  • the internal machine subcooling degree (internal machine outlet temperature - internal machine inlet pipe temperature) is less than a preset value
  • the module low pressure is less than a preset value
  • the exhaust superheat degree is greater than a preset value
  • determining The intermediate pressure in the system is too large, and the circulating power is not enough to push the internal refrigerant to the external machine.
  • the internal EEV opening degree is adjusted to be small, and the adjustment range of the internal machine EEV opening degree is different from the two differences.
  • the size of the value is related.
  • the ultimate goal is to reduce the difference between the module low voltage and the corresponding preset value and the difference between the exhaust superheat and the corresponding preset value, reduce the intermediate pressure of the system, and promote the refrigerant circulation at the internal machine.
  • the internal cooling degree is greater than the preset value
  • the module low pressure is greater than the preset value
  • the exhaust superheat is less than the preset value
  • the intermediate pressure of the system is too small, and the internal refrigerant recirculation is faster.
  • the internal EEV opening degree is increased, and the adjustment range of the internal machine EEV opening degree is different from the two differences.
  • the size of the value is related. The larger the difference, the larger the adjustment.
  • the ultimate goal is to reduce the difference between the low voltage of the module and the corresponding preset value and the difference between the superheat of the exhaust gas and the corresponding preset value, increase the intermediate pressure of the system, and control the circulation of the refrigerant within a reasonable range.
  • the present embodiment provides a preferred embodiment, that is, in the heating mode, if the operating parameter satisfies the third preset condition, the opening degree of the internal machine EEV is reduced; wherein, the third preset condition Yes: According to the internal pipe temperature, the internal cooling degree is less than the pre-cooling preset value, the module low pressure is less than the pressure preset value, and the exhaust superheat is determined to be greater than the exhaust preset value according to the exhaust temperature; if the operating parameters are satisfied
  • the fourth preset condition increases the opening degree of the internal machine EEV; wherein the fourth preset condition is: determining that the internal cooling degree is greater than the overheating preset value according to the internal tube temperature, and the module low pressure is greater than the pressure preset value And determining that the exhaust superheat is less than the exhaust preset value according to the exhaust temperature.
  • the intermediate pressure of the system can be grasped in real time according to the operating parameters, so that the intermediate pressure of the system can be controlled, so that the circulation of the refrigerant is within a reasonable range, and the system has sufficient power to promote the circulation of the refrigerant. It reduces the adverse effects of high and low internal and external units on the refrigerant circulation and improves the performance of the unit.
  • the opening degree of the EEV when the EEV opening degree is adjusted, can be adjusted according to the difference between the module low pressure and the pressure preset value, and the difference between the exhaust superheat degree and the exhaust preset value.
  • the adjustment standard of the EEV opening can refer to the above two difference values, so as to achieve precise adjustment of the EEV opening degree, so that the refrigerant circulation amount is within a reasonable range, and the system has sufficient power to promote the refrigerant circulation. It reduces the adverse effects of high and low internal and external units on the refrigerant circulation and improves the performance of the unit.
  • step S201 is a flowchart of a system refrigerant control method according to an embodiment of the present application. As shown in FIG. 2, the flow includes the following steps (step S201 - step S204):
  • step S201 the operating mode of the system is determined.
  • Step S202 detecting an operation parameter corresponding to the operation mode, the operation parameter includes at least one of the following: an internal pipe temperature, an opening degree of the internal and external machine EEV, a module low pressure, and an exhaust temperature.
  • the operating parameters include at least one of the following: inner tube temperature, internal EEV opening, module low pressure, exhaust temperature; in the heating mode, the operating parameters include at least one of the following: the inner tube Temperature, module low pressure, exhaust temperature.
  • step S203 the refrigerant flow state is determined according to the operation parameter.
  • the operating parameter satisfies the following conditions: the internal EEV opening degree is less than the preset value or the internal machine superheat is less than the preset value, the module low pressure is less than the preset value, and the exhaust superheat is greater than the preset value, Then it is determined that the intermediate pressure is too small, and the circulating power is insufficient to push the internal refrigerant to the external machine; if the operating parameters meet the following conditions simultaneously: the internal EEV opening is greater than the preset value or the internal superheat is greater than the preset value, the module is low pressure If it is greater than the preset value and the exhaust superheat is less than the preset value, it is determined that the intermediate pressure of the system is too high, and the circulating power causes the external refrigerant to be excessive.
  • the heating mode if the operating parameters meet the following conditions: the internal cooling degree is less than the preset value, the module low pressure is less than the preset value, and the exhaust superheat is greater than the preset value, it is determined that the system intermediate pressure is too large, and the circulating power is insufficient. To promote the flow of internal refrigerant to the outside machine. If the running parameter meets the internal machine subcooling degree greater than the preset value, the module low pressure is greater than the preset value, and the exhaust superheat degree is less than the preset value, it is determined that the intermediate pressure of the system is too small, and the internal refrigerant recirculation is faster.
  • step S204 the opening degree of the internal and external machine EEV is adjusted according to the refrigerant flow state.
  • the specific adjustment scheme has been described in detail above and will not be described here.
  • the precise adjustment of the EEV opening degree is realized, so that the refrigerant circulation amount is within a reasonable range, the adverse effect of the internal and external unit high drop on the refrigerant circulation is reduced, and the performance of the unit is improved.
  • the embodiment provides a block diagram of a unit high drop pressure control device, such as the unit high drop pressure control device shown in FIG. 3 , the device includes:
  • the monitoring module 10 is configured to monitor an operating mode of the unit
  • the parameter obtaining module 20 is connected to the monitoring module 10, and is configured to acquire a corresponding operating parameter according to the operating mode;
  • the adjustment module 30 is connected to the parameter acquisition module 20 for adjusting the opening degree of the electronic expansion valve EEV according to the operation parameter.
  • the corresponding parameters are obtained in different operating modes of the unit, and the opening degree of the internal and external machines EEV is adjusted according to the parameters, thereby changing the intermediate pressure of the refrigerant circulation, and ensuring that the system has sufficient power to promote the refrigerant circulation. It reduces the adverse effects of high and low internal and external unit fluctuations on refrigerant circulation, improves unit performance and improves the flexibility of engineering installation.
  • the operation mode involved in this embodiment may include at least one of the following: a cooling mode and a heating mode. If the operation mode is the cooling mode, the parameter acquisition module 20 is configured to acquire the internal pipe temperature in the cooling mode, the opening degree of the internal machine EEV, the module low pressure, and the exhaust temperature. If the operation mode is the heating mode, the parameter acquisition module 20 is configured to acquire the internal tube temperature, the module low pressure, and the exhaust temperature in the heating mode.
  • the opening degree of the internal and external EEVs can also be adjusted according to the corresponding parameters. Based on this, the corresponding parameters are obtained for different operation modes, and the current operating condition of the unit and the system pressure can be accurately evaluated, which provides a basis for the subsequent accurate adjustment of the EEV opening.
  • the technical solution of the embodiment is to control the intermediate pressure of the system by adjusting the opening degree of the internal and external machines EEV.
  • different control modes are adopted because the system refrigerant circulation direction is different.
  • the embodiment provides a preferred embodiment, namely:
  • the above adjustment module 30 may include:
  • the first adjusting unit is configured to increase the opening degree of the external EEV when the operating parameter satisfies the first preset condition; wherein, the first preset condition is: the opening degree of the internal machine EEV is less than the opening preset The value is determined according to the internal tube temperature to determine that the internal superheat is less than the preset value of the superheat, the low pressure of the module is less than the preset value of the pressure, and the exhaust superheat is determined to be greater than the preset value of the exhaust according to the exhaust temperature;
  • a second adjusting unit configured to: when the operating parameter meets the second preset condition, reduce the opening degree of the external EEV; wherein, the second preset condition is: the opening degree of the internal machine EEV is greater than the opening preset
  • the value is determined according to the internal tube temperature to determine that the internal superheat is greater than the superheat preset value, the module low pressure is greater than the pressure preset value, and the exhaust superheat is determined to be less than the exhaust preset value according to the exhaust temperature.
  • the above adjustment module 30 may include:
  • a third adjusting unit configured to: when the operating parameter meets the third preset condition, reduce the opening degree of the internal machine EEV; wherein the third preset condition is: determining the internal cooling degree according to the inner tube temperature Less than the pre-cooling preset value, the module low pressure is less than the pressure preset value, and, according to the exhaust gas temperature, determining that the exhaust superheat is greater than the exhaust preset value;
  • a fourth adjusting unit configured to increase an opening degree of the internal machine EEV when the operating parameter satisfies the fourth preset condition; wherein the fourth preset condition is: determining an internal cooling degree according to the internal tube temperature More than the overheat preset value, the module low pressure is greater than the pressure preset value, and the exhaust superheat is determined to be less than the exhaust preset value according to the exhaust temperature.
  • the intermediate pressure of the system can be grasped in real time according to the operating parameters, so that the intermediate pressure of the system is controlled, so that the circulation of the refrigerant is within a reasonable range, and the system has sufficient power to promote the refrigerant. cycle. It reduces the adverse effects of high and low internal and external units on the refrigerant circulation and improves the performance of the unit.
  • the adjustment module 30 is specifically configured to adjust the opening degree of the EEV according to the difference between the module low pressure and the pressure preset value, and the difference between the exhaust superheat and the exhaust preset value.
  • the adjustment standard of the EEV opening can refer to the above two difference values, so as to achieve precise adjustment of the EEV opening degree, so that the refrigerant circulation amount is within a reasonable range, and the system has sufficient power to promote the refrigerant circulation. It reduces the adverse effects of high and low internal and external units on the refrigerant circulation and improves the performance of the unit.
  • the embodiment further provides an air conditioning device, including the above-mentioned unit high drop pressure control device, thereby realizing control of the refrigerant circulation of the multi-connected air conditioner, and avoiding the influence of the internal and external high drop caused by the refrigerant circulation.
  • the present application adjusts the opening degree of the internal and external EEV according to the parameters by acquiring corresponding parameters in different operating modes of the unit, thereby changing the intermediate pressure of the refrigerant circulation to ensure that the system has sufficient power to promote the refrigerant. cycle. It reduces the adverse effects of high and low internal and external unit fluctuations on refrigerant circulation, improves unit performance and improves the flexibility of engineering installation.
  • the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk).
  • the optical disc includes a plurality of instructions for causing a mobile terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in the various embodiments of the present application.

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Abstract

本申请公开一种机组高落差压力控制方法、装置及空调设备。其中，所述方法包括：监听机组的运行模式；根据所述运行模式获取对应的运行参数；根据所述运行参数调节电子膨胀阀EEV的开度。本申请通过在机组的不同运行模式下检测对应的运行参数，根据运行参数对内外机EEV的开度进行调节，从而改变冷媒循环的中间压力，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能，提高工程安装的灵活程度。

Description

机组高落差压力控制方法、装置及空调设备
相关申请
本申请要求2018年04月09日申请的，申请号为201810311790.3，名称为“一种机组高落差压力控制方法、装置及空调设备”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及机组技术领域，具体而言，涉及一种机组高落差压力控制方法、装置及空调设备。
背景技术
在工程安装中，多联式空调机组经常面临内外机安装在不同楼层的情况。外机与内机的高落差将导致冷媒循环受重力影响，冷媒在系统低位置处堆积，影响机组性能。
因此，对于如何促进冷媒循环，减少冷媒在系统低位置处的堆积，是急需解决的问题。
针对现有技术中内外机高落差导致冷媒循环受影响的问题，目前尚未提出有效的解决方案。
发明内容
根据本申请的各种实施例，提供了一种机组高落差压力控制方法，其中，所述方法包括：监听机组的运行模式；根据所述运行模式获取对应的运行参数；根据所述运行参数调节电子膨胀阀EEV的开度。
进一步地，所述运行模式至少包括以下之一：制冷模式、制热模式。
进一步地，如果所述运行模式是制冷模式，根据所述运行模式获取对应的运行参数，包括：获取制冷模式下的内机管温、内机EEV的开度、模块低压、排气温度。
进一步地，如果所述运行模式是制热模式，根据所述运行模式获取对应的运行参数，包括：获取制热模式下的内机管温、模块低压、排气温度。
进一步地，如果所述运行模式是制冷模式，根据所述运行参数调节所述EEV的开度，包括：如果所述运行参数满足第一预设条件，则将外机EEV的开度调大；其中，所述第一预设条件是：所述内机EEV的开度小于开度预设值或者根据所述内机管温确定内机过热度 小于过热预设值，以及所述模块低压小于压力预设值，以及根据所述排气温度确定排气过热度大于排气预设值；如果所述运行参数满足第二预设条件，则将外机EEV的开度调小；其中，所述第二预设条件是：所述内机EEV的开度大于开度预设值获知根据所述内机管温确定内机过热度大于过热预设值，以及所述模块低压大于压力预设值，以及根据所述排气温度确定排气过热度小于排气预设值。
进一步地，如果所述运行模式是制热模式，根据所述运行参数调节所述EEV的开度，包括：如果所述运行参数满足第三预设条件，则将内机EEV的开度调小；其中，所述第三预设条件是：根据所述内机管温确定内机过冷度小于过冷预设值，模块低压小于压力预设值，以及，根据排气温度确定排气过热度大于排气预设值；如果所述运行参数满足第四预设条件，则将内机EEV的开度调大；其中，所述第四预设条件是：根据所述内机管温确定内机过冷度大于过热预设值，模块低压大于压力预设值，以及，根据排气温度确定排气过热度小于排气预设值。
进一步地，根据所述运行参数调节所述EEV的开度，包括：根据所述模块低压与所述压力预设值的差值，以及所述排气过热度与所述排气预设值的差值，调节所述EEV的开度。
本申请还提供了一种机组高落差压力控制装置，其中，所述装置包括：监听模块，用于监听机组的运行模式；参数获取模块，用于根据所述运行模式获取对应的运行参数；调节模块，用于根据所述运行参数调节电子膨胀阀EEV的开度。
进一步地，所述运行模式至少包括以下之一：制冷模式、制热模式。
进一步地，如果所述运行模式是制冷模式，所述参数获取模块，用于获取制冷模式下的内机管温、内机EEV的开度、模块低压、排气温度。
进一步地，如果所述运行模式是制热模式，所述参数获取模块，用于获取制热模式下的内机管温、模块低压、排气温度。
进一步地，如果所述运行模式是制冷模式，所述调节模块包括：第一调节单元，用于在所述运行参数满足第一预设条件的情况下，将外机EEV的开度调大；其中，所述第一预设条件是：所述内机EEV的开度小于开度预设值或者根据所述内机管温确定内机过热度小于过热预设值，以及所述模块低压小于压力预设值，以及根据所述排气温度确定排气过热度大于排气预设值；第二调节单元，用于在所述运行参数满足第二预设条件的情况下，将外机EEV的开度调小；其中，所述第二预设条件是：所述内机EEV的开度大于开度预设值或者根据所述内机管温确定内机过热度大于过热预设值，以及所述模块低压大于压力预设值，以及根据所述排气温度确定排气过热度小于排气预设值。
进一步地，如果所述运行模式是制热模式，所述调节模块包括：第三调节单元，用于 在所述运行参数满足第三预设条件的情况下，将内机EEV的开度调小；其中，所述第三预设条件是：根据所述内机管温确定内机过冷度小于过冷预设值，模块低压小于压力预设值，以及，根据排气温度确定排气过热度大于排气预设值；第四调节单元，用于在所述运行参数满足第四预设条件的情况下，将内机EEV的开度调大；其中，所述第四预设条件是：根据所述内机管温确定内机过冷度大于过热预设值，模块低压大于压力预设值，以及，根据排气温度确定排气过热度小于排气预设值。
进一步地，所述调节模块，具体用于根据所述模块低压与所述压力预设值的差值，以及所述排气过热度与所述排气预设值的差值，调节所述EEV的开度。
本申请还提供了一种空调设备，其中，所述空调设备包括上述的机组高落差压力控制装置。
应用本申请的技术方案，通过在机组的不同运行模式下检测对应的运行参数，根据运行参数对内外机EEV的开度进行调节，从而改变冷媒循环的中间压力，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能，提高工程安装的灵活程度。
附图说明
图1是根据本申请一个或多个实施例的机组高落差压力控制方法的流程图；
图2是根据本申请一个或多个实施例的系统冷媒控制方法流程图；
图3是根据本申请一个或多个实施例的机组高落差压力控制装置的结构框图。
具体实施方式
下面结合附图和具体实施例对本申请作进一步详细描述，应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
在后续的描述中，使用用于表示元件的诸如“模块”、“部件”或“单元”的后缀仅为了有利于本申请的说明，其本身没有特定的意义。因此，“模块”、“部件”或“单元”可以混合地使用。
图1是根据本申请实施例的机组高落差压力控制方法的流程图，如图1所示，所述方法包括以下步骤：
步骤S101，监听机组的运行模式；
步骤S102，根据运行模式获取对应的运行参数；
步骤S103，根据运行参数调节电子膨胀阀EEV的开度。
本实施例通过在机组的不同运行模式下获取对应的参数，根据参数对内外机EEV的开度进行调节，从而改变冷媒循环的中间压力，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能，提高工程安装的灵活程度。
本实施例中涉及的机组运行模式至少可以包括以下之一：制冷模式、制热模式。如果运行模式是制冷模式，则获取制冷模式下的内机管温、内机EEV的开度、模块低压、排气温度。如果运行模式是制热模式，则获取制热模式下的内机管温、模块低压、排气温度。由于空调设备的常用模式基本是制冷模式和制热模式，因此，本申请着重对这两个运行模式下的EEV开度调节进行介绍。当然，对于空调设备的其他运行模式，也可以根据对应的参数调节内外机EEV的开度。基于此，针对不同的运行模式获取对应的参数，可以准确评估出机组当前的运行状况以及系统压力，为后续准确调节EEV开度提供基础。
本实施例的技术方案是通过调节内外机EEV开度，从而对系统中间压力进行控制。不同运行模式下，由于系统冷媒循环方向不同，因此采用不同的控制方式。
下面主要针对制冷模式和制热模式下如何调节EEV开度进行详细介绍。
一、系统制冷运行时，系统中间压力段位于外机EEV之后到内机EEV之前。主要获取的运行参数包括：内机管温、内机EEV开度、模块高低压、排气温度等参数。
如果上述运行参数同时满足以下条件：内机EEV开度小于预设值或者内机过热度(根据内机管温可确定内机过热度)小于预设值、模块低压小于预设值、排气过热度(根据排气温度可确定排气过热度)大于预设值，则判定系统中间压力过小，循环动力不足以推动内机冷媒流动到外机。此时，可以根据模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，调节外机EEV开度变大，外机EEV开度的调整幅度与这两个差值的大小相关，差值越大，调整幅度越大。最终目的是缩小模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，提高系统中间压力，促进内机处冷媒循环。
如果上述运行参数同时满足以下条件：内机EEV开度大于预设值或者内机过热度大于预设值、模块低压大于预设值、排气过热度小于预设值，则判定系统中间压力过高，循环动力使得外机冷媒量过多。此时，根据模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，调节外机EEV开度变小，外机EEV开度的调整幅度与这两个差值的大小相关，差值越大，调整幅度越大。最终目的是缩小模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，降低系统中间压力，控制冷媒循环量在合理范围内。
基于上述分析，本实施例提供了一种优选实施方式，即在制冷模式下，如果运行参数满足第一预设条件，则将外机EEV的开度调大；其中，第一预设条件是：内机EEV的开度小于开度预设值，根据内机管温确定内机过热度小于过热预设值，模块低压小于压力预 设值，以及，根据排气温度确定排气过热度大于排气预设值；如果运行参数满足第二预设条件，则将外机EEV的开度调小；其中，第二预设条件是：内机EEV的开度大于开度预设值，根据内机管温确定内机过热度大于过热预设值，模块低压大于压力预设值，以及，根据排气温度确定排气过热度小于排气预设值。基于此，在制冷模式下可以根据运行参数实时掌握系统的中间压力，从而对系统的中间压力进行控制，使得冷媒循环量在合理范围内，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能。
二、系统制热运行时，中间压力段位于内机EEV之后到外机EEV之前。主要获取的运行参数包括：内机管温、外机EEV开度、模块高低压、排气温度等参数。
如果上述运行参数同时满足以下条件：内机过冷度(内机出管温度-内机进管温度)小于预设值、模块低压小于预设值、排气过热度大于预设值，则判定系统中间压力过大，循环动力不足以推动内机冷媒流动到外机。此时，根据模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，调节内机EEV开度变小，内机EEV开度的调整幅度与这两个差值的大小相关，差值越大，调整幅度越大。最终目的是缩小模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，降低系统中间压力，促进内机处冷媒循环。
如果上述运行参数同时满足以下条件：内机过冷度大于预设值、模块低压大于预设值、排气过热度小于预设值，则判定系统中间压力过小，内机冷媒回流较快。此时，根据模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，调节内机EEV开度变大，内机EEV开度的调整幅度与这两个差值的大小相关，差值越大，调整幅度越大。最终目的是缩小模块低压与对应预设值的差值以及排气过热度与对应预设值的差值，提高系统中间压力，控制冷媒循环量在合理范围内。
基于上述分析，本实施例提供了一种优选实施方式，即在制热模式下，如果运行参数满足第三预设条件，则将内机EEV的开度调小；其中，第三预设条件是：根据内机管温确定内机过冷度小于过冷预设值，模块低压小于压力预设值，以及，根据排气温度确定排气过热度大于排气预设值；如果运行参数满足第四预设条件，则将内机EEV的开度调大；其中，第四预设条件是：根据内机管温确定内机过冷度大于过热预设值，模块低压大于压力预设值，以及，根据排气温度确定排气过热度小于排气预设值。基于此，在制热模式下可以根据运行参数实时掌握系统的中间压力，从而对系统的中间压力进行控制，使得冷媒循环量在合理范围内，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能。
需要说明的是，上述多个预设值的具体取值，可以根据实际情况和实际需求进行设定 和调整。
在本实施例中，对EEV开度进行调节时，可以根据模块低压与压力预设值的差值，以及排气过热度与排气预设值的差值，调节EEV的开度。基于此，EEV开度的调节标准可以参考上述两个差值的大小，从而实现对EEV开度的精准调整，使得冷媒循环量在合理范围内，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能。
图2是根据本申请实施例的系统冷媒控制方法流程图，如图2所示，所述流程包括以下步骤(步骤S201-步骤S204)：
步骤S201，判断系统的运行模式。
步骤S202，检测与运行模式相对应的运行参数，所述运行参数至少包括以下之一：内机管温、内外机EEV的开度、模块低压、排气温度。
具体地，制冷模式下，运行参数至少包括以下之一：内机管温、内机EEV的开度、模块低压、排气温度；制热模式下，运行参数至少包括以下之一：内机管温、模块低压、排气温度。
步骤S203，根据运行参数判定冷媒流动状态。
具体地，制冷模式下，如果运行参数同时满足以下条件：内机EEV开度小于预设值或者内机过热度小于预设值、模块低压小于预设值、排气过热度大于预设值，则判定系统中间压力过小，循环动力不足以推动内机冷媒流动到外机；如果运行参数同时满足以下条件：内机EEV开度大于预设值或者内机过热度大于预设值、模块低压大于预设值、排气过热度小于预设值，则判定系统中间压力过高，循环动力使得外机冷媒量过多。
制热模式下，如果运行参数同时满足以下条件：内机过冷度小于预设值、模块低压小于预设值、排气过热度大于预设值，则判定系统中间压力过大，循环动力不足以推动内机冷媒流动到外机。如果运行参数同时满足内机过冷度大于预设值、模块低压大于预设值、排气过热度小于预设值，则判定系统中间压力过小，内机冷媒回流较快。
步骤S204，根据冷媒流动状态调节内外机EEV的开度。具体调节方案前面已经进行了详细的描述，此处不再赘述。
基于此，实现对EEV开度的精准调整，使得冷媒循环量在合理范围内，减少了内外机组高落差对冷媒循环的不利影响，改善机组性能。
对应于图1介绍的机组高落差压力控制方法，本实施例提供了一种机组高落差压力控制装置，如图3所示的机组高落差压力控制装置的结构框图，所述装置包括：
监听模块10，用于监听机组的运行模式；
参数获取模块20，连接至监听模块10，用于根据运行模式获取对应的运行参数；
调节模块30，连接至参数获取模块20，用于根据运行参数调节电子膨胀阀EEV的开度。
本实施例通过在机组的不同运行模式下获取对应的参数，根据参数对内外机EEV的开度进行调节，从而改变冷媒循环的中间压力，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能，提高工程安装的灵活程度。
本实施例中涉及的运行模式至少可以包括以下之一：制冷模式、制热模式。如果运行模式是制冷模式，上述参数获取模块20，用于获取制冷模式下的内机管温、内机EEV的开度、模块低压、排气温度。如果运行模式是制热模式，上述参数获取模块20，用于获取制热模式下的内机管温、模块低压、排气温度。当然，对于空调设备的其他运行模式，也可以根据对应的参数调节内外机EEV的开度。基于此，针对不同的运行模式获取对应的参数，可以准确评估出机组当前的运行状况以及系统压力，为后续准确调节EEV开度提供基础。
本实施例的技术方案是通过调节内外机EEV开度，从而对系统中间压力进行控制。不同运行模式下，由于系统冷媒循环方向不同，因此采用不同的控制方式。
基于此，本实施例提供了一种优选实施方式，即：
如果运行模式是制冷模式，上述调节模块30可以包括：
第一调节单元，用于在运行参数满足第一预设条件的情况下，将外机EEV的开度调大；其中，第一预设条件是：内机EEV的开度小于开度预设值，根据内机管温确定内机过热度小于过热预设值，模块低压小于压力预设值，以及，根据排气温度确定排气过热度大于排气预设值；
第二调节单元，用于在运行参数满足第二预设条件的情况下，将外机EEV的开度调小；其中，第二预设条件是：内机EEV的开度大于开度预设值，根据内机管温确定内机过热度大于过热预设值，模块低压大于压力预设值，以及，根据排气温度确定排气过热度小于排气预设值。
如果运行模式是制热模式，上述调节模块30可以包括：
第三调节单元，用于在运行参数满足第三预设条件的情况下，将内机EEV的开度调小；其中，第三预设条件是：根据内机管温确定内机过冷度小于过冷预设值，模块低压小于压力预设值，以及，根据排气温度确定排气过热度大于排气预设值；
第四调节单元，用于在运行参数满足第四预设条件的情况下，将内机EEV的开度调大；其中，第四预设条件是：根据内机管温确定内机过冷度大于过热预设值，模块低压大于压 力预设值，以及，根据排气温度确定排气过热度小于排气预设值。
基于此，在制热模式或者制热模式下，可以根据运行参数实时掌握系统的中间压力，从而对系统的中间压力进行控制，使得冷媒循环量在合理范围内，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能。
优选地，上述调节模块30，具体用于根据模块低压与压力预设值的差值，以及排气过热度与排气预设值的差值，调节EEV的开度。基于此，EEV开度的调节标准可以参考上述两个差值的大小，从而实现对EEV开度的精准调整，使得冷媒循环量在合理范围内，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能。
本实施例还提供了一种空调设备，包括上述介绍的机组高落差压力控制装置，从而实现对多联机空调设备的冷媒循环的控制，避免内外机高落差导致冷媒循环受影响。
从以上的描述中可知，本申请通过在机组的不同运行模式下获取对应的参数，根据参数对内外机EEV的开度进行调节，从而改变冷媒循环的中间压力，确保系统有足够的动力促进冷媒循环。减少了内外机组高落差对冷媒循环的不利影响，改善机组性能，提高工程安装的灵活程度。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。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、物品或者装置中还存在另外的相同要素。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，所述计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台移动终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本申请的保护之内。

Claims (15)

  1. 一种机组高落差压力控制方法，其特征在于，所述方法包括：
    监听机组的运行模式；
    根据所述运行模式获取对应的运行参数；
    根据所述运行参数调节电子膨胀阀EEV的开度。
  2. 根据权利要求1所述的方法，其特征在于，所述运行模式至少包括以下之一：制冷模式、制热模式。
  3. 根据权利要求2所述的方法，其特征在于，如果所述运行模式是制冷模式，根据所述运行模式获取对应的运行参数，包括：
    获取制冷模式下的内机管温、内机EEV的开度、模块低压、排气温度。
  4. 根据权利要求2所述的方法，其特征在于，如果所述运行模式是制热模式，根据所述运行模式获取对应的运行参数，包括：
    获取制热模式下的内机管温、模块低压、排气温度。
  5. 根据权利要求3所述的方法，其特征在于，如果所述运行模式是制冷模式，根据所述运行参数调节所述EEV的开度，包括：
    如果所述运行参数满足第一预设条件，则将外机EEV的开度调大；其中，所述第一预设条件是：所述内机EEV的开度小于开度预设值或者根据所述内机管温确定内机过热度小于过热预设值，以及所述模块低压小于压力预设值，以及根据所述排气温度确定排气过热度大于排气预设值；
    如果所述运行参数满足第二预设条件，则将外机EEV的开度调小；其中，所述第二预设条件是：所述内机EEV的开度大于开度预设值获知根据所述内机管温确定内机过热度大于过热预设值，以及所述模块低压大于压力预设值，以及根据所述排气温度确定排气过热度小于排气预设值。
  6. 根据权利要求4所述的方法，其特征在于，如果所述运行模式是制热模式，根据所述运行参数调节所述EEV的开度，包括：
    如果所述运行参数满足第三预设条件，则将所述内机EEV的开度调小；其中，所述第三预设条件是：根据所述内机管温确定内机过冷度小于过冷预设值，模块低压小于压力预设值，以及，根据排气温度确定排气过热度大于排气预设值；
    如果所述运行参数满足第四预设条件，则将所述内机EEV的开度调大；其中，所述第四预设条件是：根据所述内机管温确定内机过冷度大于过热预设值，模块低压大于压力预 设值，以及，根据排气温度确定排气过热度小于排气预设值。
  7. 根据权利要求5或6所述的方法，其特征在于，根据所述运行参数调节所述EEV的开度，包括：
    根据所述模块低压与所述压力预设值的差值，以及所述排气过热度与所述排气预设值的差值，调节所述EEV的开度。
  8. 一种机组高落差压力控制装置，其特征在于，所述装置包括：
    监听模块，用于监听机组的运行模式；
    参数获取模块，用于根据所述运行模式获取对应的运行参数；
    调节模块，用于根据所述运行参数调节电子膨胀阀EEV的开度。
  9. 根据权利要求8所述的装置，其特征在于，所述运行模式至少包括以下之一：制冷模式、制热模式。
  10. 根据权利要求9所述的装置，其特征在于，如果所述运行模式是制冷模式，所述参数获取模块，用于获取制冷模式下的内机管温、内机EEV的开度、模块低压、排气温度。
  11. 根据权利要求9所述的装置，其特征在于，如果所述运行模式是制热模式，所述参数获取模块，用于获取制热模式下的内机管温、模块低压、排气温度。
  12. 根据权利要求10所述的装置，其特征在于，如果所述运行模式是制冷模式，所述调节模块包括：
    第一调节单元，用于在所述运行参数满足第一预设条件的情况下，将外机EEV的开度调大；其中，所述第一预设条件是：所述内机EEV的开度小于开度预设值或者根据所述内机管温确定内机过热度小于过热预设值，以及所述模块低压小于压力预设值，以及根据所述排气温度确定排气过热度大于排气预设值；
    第二调节单元，用于在所述运行参数满足第二预设条件的情况下，将外机EEV的开度调小；其中，所述第二预设条件是：所述内机EEV的开度大于开度预设值或者根据所述内机管温确定内机过热度大于过热预设值，以及所述模块低压大于压力预设值，以及根据所述排气温度确定排气过热度小于排气预设值。
  13. 根据权利要求11所述的装置，其特征在于，如果所述运行模式是制热模式，所述调节模块包括：
    第三调节单元，用于在所述运行参数满足第三预设条件的情况下，将所述内机EEV的开度调小；其中，所述第三预设条件是：根据所述内机管温确定内机过冷度小于过冷预设值，模块低压小于压力预设值，以及，根据排气温度确定排气过热度大于排气预设值；
    第四调节单元，用于在所述运行参数满足第四预设条件的情况下，将所述内机EEV的 开度调大；其中，所述第四预设条件是：根据所述内机管温确定内机过冷度大于过热预设值，模块低压大于压力预设值，以及，根据排气温度确定排气过热度小于排气预设值。
  14. 根据权利要求12或13所述的装置，其特征在于，
    所述调节模块，具体用于根据所述模块低压与所述压力预设值的差值，以及所述排气过热度与所述排气预设值的差值，调节所述EEV的开度。
  15. 一种空调设备，其特征在于，所述空调设备包括权利要求8至14中任一项所述的机组高落差压力控制装置。
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