EP3467390B1 - Multisplit-system und verfahren zur steuerung der erwärmung eines drosselungselements dafür - Google Patents

Multisplit-system und verfahren zur steuerung der erwärmung eines drosselungselements dafür Download PDF

Info

Publication number
EP3467390B1
EP3467390B1 EP17802044.2A EP17802044A EP3467390B1 EP 3467390 B1 EP3467390 B1 EP 3467390B1 EP 17802044 A EP17802044 A EP 17802044A EP 3467390 B1 EP3467390 B1 EP 3467390B1
Authority
EP
European Patent Office
Prior art keywords
compressor
pressure
throttling element
pressure difference
heat exchanger
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.)
Active
Application number
EP17802044.2A
Other languages
English (en)
French (fr)
Other versions
EP3467390A1 (de
EP3467390A4 (de
Inventor
Bin Luo
Yuanyang Li
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.)
Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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 Midea Group Co Ltd, GD Midea Heating and Ventilating Equipment Co Ltd filed Critical Midea Group Co Ltd
Publication of EP3467390A1 publication Critical patent/EP3467390A1/de
Publication of EP3467390A4 publication Critical patent/EP3467390A4/de
Application granted granted Critical
Publication of EP3467390B1 publication Critical patent/EP3467390B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • F24F11/62—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
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2509—Economiser valves

Definitions

  • the present invention relates to air conditioner field, and more particularly, to a method for controlling a heating throttling element in a multi-split air conditioning system and a multi-split air conditioning system CN104266407A discloses a multi-split air conditioning method according to the preamble of claim 1 and a multi-split air conditioning system according to the preamble of claim 5.
  • the multi-split air conditioning system has four modes, including a pure refrigerating mode, a pure heating mode, a main refrigerating mode and a main heating mode.
  • the main refrigerating mode and the main heating mode can simultaneously utilize condensation heat and evaporation heat of the system to achieve simultaneous refrigerating and heating, which greatly improves the energy efficiency of the system.
  • the high-pressure gas of the high-pressure pipe of the outdoor unit enters the heating indoor unit, after it releases heat in the heating indoor unit, it expands into the low-pressure gas through the electronic expansion valve to return to the outdoor unit.
  • the opening of the electronic expansion valve will affect the refrigerant flow entering the heating indoor unit, and the condensation temperature of the heating indoor unit will be adjusted.
  • the heating indoor unit having a suitable opening will have both a greater refrigerant flow and a higher condensing temperature, thereby outputting a higher heating capacity.
  • Other aspects of the present invention can be found in the dependent claims.
  • the present invention aims to solve at least one of the technical problems in the related art to at least some extent.
  • an objective of the present invention is to provide a method for controlling a heating throttling element in a multi-split air conditioning system, the opening of the heating throttling element is adjusted by the pressure difference between the high pressure and the intermediate pressure of the shunt device, such that the multi-split air conditioning system can not only meet liquid discharge requirements, but also have good performance and energy efficiency during heating, and especially during partial load heating, user experience can be improved.
  • Another objective of the present invention is to provide a non-transitory computer readable storage medium according to claim 9.
  • Another objective of the present invention is to provide a multi-split air conditioning system.
  • inventions of an aspect of the present invention provide a method for controlling a heating throttling element in a multi-split air conditioning system.
  • the multi-split air conditioning system includes an outdoor unit, a shunt device and a plurality of indoor units.
  • the plurality of indoor units includes a heating indoor unit and a refrigerating indoor unit.
  • the outdoor unit includes a compressor.
  • the shunt device includes a gas-liquid separator, a first heat exchanger, a second heat exchanger, a first throttling element, a heating throttling element, a high pressure pressure sensor and an intermediate pressure sensor.
  • An outlet of a first heat exchange flow path of the first heat exchanger is in communication with an inlet of the first throttling element, an outlet of the first throttling element is in communication with an inlet of a first heat exchange flow path of the second heat exchanger, an outlet of a second heat exchange flow path of the second heat exchanger is in communication with an inlet of a second heat exchange flow path of the first heat exchanger, and the heating throttling element is disposed between the outlet of the first heat exchange flow path of the second heat exchanger and the inlet of the second heat exchange flow path of the second heat exchanger.
  • An inlet of the gas-liquid separator is connected to an outlet of the outdoor unit.
  • a liquid outlet of the gas-liquid separator is in communication with the inlet of the first heat exchange flow path of the first heat exchanger, and a vapor outlet of the gas-liquid separator is in communication with an inlet of the heating indoor unit.
  • An outlet of the heating indoor unit is in communication with the inlet of the first heat exchange flow path of the second heat exchanger, and the outlet of the first heat exchange flow path of the second heat exchanger is in communication with an inlet of the refrigerating indoor unit.
  • An outlet of the refrigerating indoor unit and an outlet of the second heat exchange flow path of the first heat exchanger are in communication with an inlet of the outdoor unit.
  • the high pressure sensor is disposed at the outlet of the first heat exchange flow path of the first heat exchanger, and the intermediate pressure sensor is disposed at the inlet of the first heat exchange flow path of the second heat exchanger.
  • the method includes: obtaining a target exhaust pressure of the compressor or a saturation temperature corresponding to the target exhaust pressure; controlling the compressor based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, obtaining the high pressure and the intermediate pressure of the shunt device after the compressor operates stably, and calculating a pressure difference between the high pressure and the intermediate pressure; and obtaining a target pressure difference between the high pressure and the intermediate pressure of the shunt device, and adjusting an opening of the heating throttling element based on the pressure difference and the target pressure difference.
  • the target exhaust pressure of the compressor or the saturation temperature corresponding to the target exhaust pressure is obtained first, and then the compressor is controlled based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, after the compressor operates stably, the high pressure and the intermediate pressure of the shunt device are obtained, and the pressure difference between the high pressure and the intermediate pressure is calculated, and finally the target pressure difference between the high pressure and the intermediate pressure of the shunt device is obtained, and the opening of the heating throttling element is adjusted based on the pressure difference and the target pressure difference, such that the multi-split air conditioning system can not only meet liquid discharge requirements, but also have good performance and energy efficiency during heating, and especially during partial load heating, user experience can be improved.
  • adjusting the opening of the heating throttling element based on the pressure difference and the target pressure difference includes: decreasing the opening of the heating throttling element when the pressure difference is greater than the target pressure difference; and increasing the opening of the heating throttling element when the pressure difference is less than the target pressure difference.
  • the method further includes: determining whether the pressure difference is equal to the target pressure difference, and determining whether a saturation temperature corresponding to a current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, and determining whether an operating frequency of the compressor is greater than or equal to a maximum frequency; and controlling the opening of the heating throttling element to keep unchanged, when the pressure difference is equal to the target pressure difference, or the saturation temperature corresponding to the current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, or the operating frequency of the compressor is greater than or equal to the maximum frequency.
  • the saturation temperature corresponding to the current exhaust pressure of the compressor is less than the saturation temperature corresponding to the target exhaust pressure of the compressor, and the operating frequency of the compressor is less than the maximum frequency
  • the operating frequency of the compressor is adjusted, and the opening of the heating throttling element is adjusted based on the adjusted operating frequency of the compressor.
  • the multi-split air conditioning system is configured to operate in a heating mode, a main heating mode, or a main refrigerating mode.
  • the present disclosure further provides a non-transitory computer readable storage medium having computer programs stored thereon.
  • the computer programs are executed by a processor, the above method for controlling a heating throttling element in a multi-split air conditioning system is implemented.
  • the opening of the heating throttling element is adjusted based on the pressure difference between the high pressure and the intermediate pressure of the shunt device, such that the multi-split air conditioning system can not only meet liquid discharge requirements, but also have good performance and energy efficiency during heating, and especially during partial load heating, user experience can be improved.
  • the multi-split air conditioning system includes an outdoor unit, a shunt device, a plurality of indoor units comprising a heating indoor unit and a refrigerating indoor unit and a control module.
  • the outdoor unit includes a compressor
  • the shunt device includes a gas-liquid separator, a first heat exchanger, a second heat exchanger, a first throttling element, a heating throttling element, a high pressure pressure sensor, and an intermediate pressure sensor.
  • An outlet of a first heat exchange flow path of the first heat exchanger is in communication with an inlet of the first throttling element, an outlet of the first throttling element is in communication with an inlet of a first heat exchange flow path of the second heat exchanger, an outlet of a second heat exchange flow path of the second heat exchanger is in communication with an inlet of a second heat exchange flow path of the first heat exchanger, the heating throttling element is disposed between the outlet of the first heat exchange flow path of the second heat exchanger and the inlet of the second heat exchange flow path of the second heat exchanger.
  • An inlet of the gas-liquid separator is connected to an outlet of the outdoor unit.
  • a liquid outlet of the gas-liquid separator is in communication with the inlet of the first heat exchange flow path of the first heat exchanger, and a vapor outlet of the gas-liquid separator is in communication with an inlet of the heating indoor unit and an outlet of the heating indoor unit is in communication with the inlet of the first heat exchange flow path of the second heat exchanger.
  • the outlet of the first heat exchange flow path of the second heat exchanger is in communication with an inlet of the refrigerating indoor unit.
  • An outlet of the refrigerating indoor unit and an outlet of the second heat exchange flow path of the first heat exchanger are in communication with an inlet of the outdoor unit.
  • the high pressure sensor is disposed at the outlet of the first heat exchange flow path of the first heat exchanger, and the intermediate pressure sensor is disposed at the inlet of the first heat exchange flow path of the second heat exchanger.
  • the control module is configured to: obtain a target exhaust pressure of the compressor or a saturation temperature corresponding to the target exhaust pressure; control the compressor based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, obtain the high pressure and the intermediate pressure of the shunt device after the compressor operates stably, and calculate a pressure difference between the high pressure and the intermediate pressure; and obtain a target pressure difference between the high pressure and the intermediate pressure of the shunt device, and adjust an opening of the heating throttling element based on the pressure difference and the target pressure difference.
  • the control module obtains the target exhaust pressure of the compressor or the saturation temperature corresponding to the target exhaust pressure first, and controls the compressor based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, after the compressor operates stably, the control module obtains the high pressure and the intermediate pressure of the shunt device, then, the control module calculates the pressure difference between the high pressure and the intermediate pressure, obtains the target pressure difference between the high pressure and the intermediate pressure of the shunt device, and adjusts the opening of the heating throttling element based on the pressure difference and the target pressure difference, such that the multi-split air conditioning system can not only meet liquid discharge requirements, but also have good performance and energy efficiency during heating, and especially during partial load heating, user experience can be improved.
  • control module when the control module is configured to adjust the opening of the heating throttling element based on the pressure difference and the target pressure difference, the control module is configured to: decrease the opening of the heating throttling element when the pressure difference is greater than the target pressure difference; and increase the opening of the heating throttling element when the pressure difference is less than the target pressure difference.
  • the control module is further configured to: determine whether the pressure difference is equal to the target pressure difference, and determine whether a saturation temperature corresponding to a current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, and determine whether an operating frequency of the compressor is greater than or equal to a maximum frequency; and control the opening of the heating throttling element to keep unchanged, when the pressure difference is equal to the target pressure difference, or the saturation temperature corresponding to the current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, or the operating frequency of the compressor is greater than or equal to the maximum frequency.
  • the control module is configured to adjust the operating frequency of the compressor, and adjust the opening of the heating throttling element based on the adjusted operating frequency of the compressor.
  • the multi-split air conditioning system is configured to operate in a heating mode, a main heating mode, or a main refrigerating mode.
  • outdoor unit 10 a plurality of indoor units 20, shunt device 30, gas-liquid separator 31, first heat exchanger 32, second heat exchanger 33, first throttling element 34, and heating throttling element 35.
  • the multi-split air conditioning system includes an outdoor unit, a shunt device and a plurality of indoor units.
  • the outdoor unit includes a compressor.
  • the shunt device includes a first heat exchanger, a second heat exchanger and a heating throttling element.
  • An outlet of a first heat exchange flow path of the first heat exchanger is in communication with an inlet of a first heat exchange flow path of the second heat exchanger
  • an outlet of a second heat exchange flow path of the second heat exchanger is in communication with an inlet of a second heat exchange flow path of the first heat exchanger
  • the heating throttling element is disposed between the outlet of the first heat exchange flow path of the second heat exchanger and the inlet of the second heat exchange flow path of the second heat exchanger.
  • the multi-split air conditioning system includes an outdoor unit 10, a plurality of indoor units 20 and a shunt device 30.
  • the outdoor unit 10 includes a compressor (not specifically shown in the drawings).
  • the shunt device 30 includes a gas-liquid separator 31, a first heat exchanger 32, a second heat exchanger 33, a first throttling element 34 and a heating throttling element 35.
  • a first end of the gas-liquid separator 31 is connected to an end of the outdoor unit 10.
  • a second end of the gas-liquid separator 31 is in communication with the inlet of the first heat exchange flow path of the first heat exchanger 32, the first throttling element 34 is disposed between the outlet of the first heat exchange flow path of the first heat exchanger 32 and the inlet of the first heat exchange flow path of the second heat exchanger 33.
  • the heating throttling element 35 is disposed between the outlet of the first heat exchange flow path of the second heat exchanger 33 and the inlet of the second heat exchange flow path of the second heat exchanger 33, the outlet of the second heat exchange flow path of the second heat exchanger 33 is in communication with the inlet of the second heat exchange flow path of the first heat exchanger 32, and the outlet of the second heat exchange flow path of the first heat exchanger 32 is in communication with the another end of the outdoor unit 10 and an end of the refrigerating indoor unit, respectively.
  • Another end of the refrigerating indoor unit is in communication with the outlet of the first heat exchange flow path of the second heat exchanger 33, a third end of the gas-liquid separator 31 is in communication with an end of the heating indoor unit, and another end of the heating indoor unit is in communication with the inlet of the first heat exchange flow path of the second heat exchanger 33.
  • the first throttling element and the heating throttling element may be electronic expansion valves, and the first heat exchanger and the second heat exchanger may be plate heat exchangers.
  • the refrigerant flow rate and flow velocity entering the heating indoor unit will be reduced.
  • the opening of the heating throttling element when the opening of the heating throttling element is too large, the pressure difference between inlet and outlet of the heating indoor unit will be increased, and the refrigerant flow rate and flow velocity entering the heating indoor unit will be increased.
  • the heating indoor unit is not prone to liquid storage, the outlet supercooling degree of the heating indoor unit will be too small, and the upstream supercooling degree SCm2 of the heating throttling element will be too small, and there may be gas upstream of the valve, which may cause system instability.
  • the opening of the heating throttling element when the opening of the heating throttling element is too large, the operating frequency of the compressor will increase, the system energy efficiency will decrease, and the high pressure may fail to reach, and the exhaust superheat of the compressor may sometimes be low.
  • the opening of the heating throttling element is relatively small.
  • Fig. 2 is a flow chart of a method for controlling a heating throttling element in a multi-split air conditioning system according to an embodiment of the present disclosure. As illustrated in Fig. 2 , the method may include following operations.
  • a target exhaust pressure of the compressor or a saturation temperature corresponding to the target exhaust pressure is obtained.
  • the compressor is controlled based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, and after the compressor operates stably, a high pressure and an intermediate pressure of the shunt device are obtained, and a pressure difference between the high pressure and the intermediate pressure is calculated.
  • the exhaust pressure Pc of the compressor can be obtained in real time by a pressure sensor disposed at an exhaust port of the compressor, or after the exhaust pressure Pc of the compressor is obtained, the saturation temperature Tc corresponding to the exhaust pressure can be obtained based on the exhaust pressure Pc.
  • PI Proportional Integral
  • the high pressure Ps1 can be obtained by a pressure sensor disposed at the outlet of the first heat exchange flow path of the first heat exchanger of the shunt device, and the intermediate pressure Ps2 can be obtained by a pressure sensor disposed at the inlet of the first heat exchange flow path of the second heat exchanger.
  • a target pressure difference between the high pressure and the intermediate pressure of the shunt device is obtained, and an opening of the heating throttling element is adjusted based on the pressure difference and the target pressure difference.
  • the target pressure difference ⁇ Ps is the pressure difference between the high pressure and the intermediate pressure of the shunt device when the system has no liquid accumulation, and the target pressure difference is obtained by experimental verification.
  • the target pressure difference ⁇ Ps is generally a small value that can ensure system refrigerant flow rate and satisfy high pressure.
  • adjusting the opening of the heating throttling element based on the pressure difference and the target pressure difference includes: decreasing the opening of the heating throttling element when the pressure difference is greater than the target pressure difference, and increasing the opening of the heating throttling element when the pressure difference is less than the target pressure difference.
  • PI adjustment is performed on the heating throttling element from an initial opening based on the pressure difference ⁇ P between the high pressure Ps1 and the intermediate pressure Ps2 and the target pressure difference ⁇ Ps.
  • the method further includes following operations. It is determined whether the pressure difference is equal to the target pressure difference, and it is determined whether a saturation temperature corresponding to a current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, and it is determined whether an operating frequency of the compressor is greater than or equal to a maximum frequency, when the pressure difference is equal to the target pressure difference, or the saturation temperature corresponding to the current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, or the operating frequency of the compressor is greater than or equal to the maximum frequency, the opening of the heating throttling element is controlled to keep unchanged.
  • the saturation temperature corresponding to the current exhaust pressure of the compressor is less than the saturation temperature corresponding to the target exhaust pressure of the compressor, and the operating frequency of the compressor is less than the maximum frequency, the operating frequency of the compressor is adjusted, and the opening of the heating throttling element is adjusted based on the adjusted operating frequency of the compressor.
  • ⁇ P ⁇ Ps and Pc ⁇ Pcs (or Tc ⁇ Tcs), or whether the compressor is in full operating frequency.
  • ⁇ P ⁇ P, or ⁇ P ⁇ Ps but Pc ⁇ Pcs (or Tc ⁇ Tcs), or ⁇ P ⁇ Ps but the compressor is in full operating frequency
  • the opening of the heating throttling element is controlled to keep unchanged.
  • the operating frequency of the compressor is adjusted, and the opening of the heating throttling element is readjusted until the above conditions are met, indicating that the system has reached a steady state, and the opening of the heating throttling element can be stabilized at the opening, such that the system can have better system performance and energy efficiency under heating, especially under partial load heating.
  • FIG. 3 is a flow chart of a method for controlling a heating throttling element in a multi-split air conditioning system according to an embodiment of the present disclosure.
  • the method for controlling a heating throttling element in a multi-split air conditioning system may include the following operations.
  • PI adjustment is performed on the operating frequency of the compressor based on a difference between the exhaust pressure Pc (or the saturation temperature Tc corresponding to the exhaust pressure) and the target exhaust pressure Pcs (or the saturation temperature Tcs corresponding to the target exhaust pressure), to obtain a new exhaust pressure Pc (or a saturation temperature Tc corresponding to the new exhaust pressure), a high pressure Ps1 and an intermediate pressure Ps2.
  • PI adjustment is performed on the opening of the heating throttling element based on the difference between the pressure difference ⁇ P and the target pressure difference ⁇ Ps.
  • the heating throttling element is kept at the opening and the system operates stably.
  • the target exhaust pressure of the compressor or the saturation temperature corresponding to the target exhaust pressure is obtained first, and then the compressor is controlled based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, after the compressor operates stably, the high pressure and the intermediate pressure of the shunt device are obtained, and the pressure difference between the high pressure and the intermediate pressure is calculated, and finally the target pressure difference between the high pressure and the intermediate pressure of the shunt device is obtained, and the opening of the heating throttling element is quickly adjusted based on the pressure difference and the target pressure difference, such that the multi-split air conditioning system can not only meet liquid discharge requirements, but also have good performance and energy efficiency during heating, and especially during partial load heating, user experience can be improved.
  • the present disclosure further provides a non-transitory computer readable storage medium having computer programs stored thereon.
  • the computer programs are executed by a processor, the above method for controlling a heating throttling element in a multi-split air conditioning system is implemented.
  • the opening of the heating throttling element is adjusted based on the pressure difference between the high pressure and the intermediate pressure of the shunt device, such that the multi-split air conditioning system can not only meet liquid discharge requirements, but also have good performance and energy efficiency during heating, and especially during partial load heating, user experience can be improved.
  • Fig. 1 is a schematic diagram of a multi-split air conditioning system according to an embodiment of the present disclosure. As illustrated in Fig. 1 , the multi-split air conditioning system includes an outdoor unit 10, a plurality of indoor units 20, a shunt device 30 and a control module (not specifically shown in the drawings).
  • the outdoor unit 10 includes a compressor (not specifically shown in the drawings).
  • the shunt device 30 includes a first heat exchanger 32, a second heat exchanger 33 and a heating throttling element 35.
  • An outlet of a first heat exchange flow path of the first heat exchanger 32 is in communication with an inlet of a first heat exchange flow path of the second heat exchanger 33
  • an outlet of a second heat exchange flow path of the second heat exchanger 33 is in communication with an inlet of a second heat exchange flow path of the first heat exchanger 32
  • the heating throttling element 35 is disposed between the outlet of the first heat exchange flow path of the second heat exchanger 33 and the inlet of the second heat exchange flow path of the second heat exchanger 33.
  • the control module is configured to obtain a target exhaust pressure of the compressor or a saturation temperature corresponding to the target exhaust pressure, control the compressor based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, and obtain a high pressure and an intermediate pressure of the shunt device 30 after the compressor operates stably, and calculate a pressure difference between the high pressure and the intermediate pressure, and obtain a target pressure difference between the high pressure and the intermediate pressure of the shunt device 30, and adjust an opening of the heating throttling element 35 based on the pressure difference and the target pressure difference.
  • the target pressure difference is the pressure difference between the high pressure and the intermediate pressure of the shunt device when the system has no liquid accumulation, and the target pressure difference is obtained by experimental verification.
  • the target pressure difference is generally a small value that can ensure system refrigerant flow rate and satisfy high pressure.
  • control module when the control module is configured to adjust the opening of the heating throttling element based on the pressure difference and the target pressure difference, the control module is configured to decrease the opening of the heating throttling element 35 when the pressure difference is greater than the target pressure difference, and increase the opening of the heating throttling element 35 when the pressure difference is less than the target pressure difference.
  • the control module first obtains the exhaust pressure Pc of the compressor in real time by a pressure sensor disposed at an exhaust port of the compressor, or obtains the saturation temperature Tc corresponding to the exhaust pressure based on the exhaust pressure Pc after the exhaust pressure Pc of the compressor is obtained.
  • the control module performs PI (Proportional Integral) adjustment on the operating frequency of the compressor, to obtain a new exhaust pressure Pc of the compressor (or the saturation pressure Tc corresponding to the new exhaust pressure), a high pressure Ps1 and an intermediate pressure Ps2 of the shunt device 30 after the compressor operates stably.
  • PI Proportional Integral
  • the high pressure Ps1 can be obtained by a pressure sensor disposed at the outlet of the first heat exchange flow path of the first heat exchanger 32 of the shunt device 30, and the intermediate pressure Ps2 can be obtained by the pressure sensor disposed at the inlet of the first heat exchange flow path of the second heat exchanger 33.
  • the control module performs PI adjustment on the heating throttling element 35 from an initial opening based on the pressure difference ⁇ P between the high pressure Ps1 and the intermediate pressure Ps2 and the target pressure difference ⁇ Ps.
  • the control module controls the opening of the heating throttling element to be decreased, in this case, the exhaust pressure Pc of the compressor (or the saturation temperature Tc corresponding to the exhaust pressure) is increased, and due to the flow rate is decreased, ⁇ P is decreased.
  • the control module controls the opening of the heating throttling element to be increased, in this case, the exhaust pressure Pc of the compressor (or the saturation temperature Tc corresponding to the exhaust pressure) is decreased, and due to the flow rate is increased, ⁇ P is increased.
  • the control module is further configured to determine whether the pressure difference is equal to the target pressure difference, and determine whether a saturation temperature corresponding to a current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, and determine whether an operating frequency of the compressor is greater than or equal to a maximum frequency, and control the opening of the heating throttling element 35 to keep unchanged when the pressure difference is equal to the target pressure difference, or the saturation temperature corresponding to the current exhaust pressure of the compressor is greater than or equal to the saturation temperature corresponding to the target exhaust pressure of the compressor, or the operating frequency of the compressor is greater than or equal to the maximum frequency.
  • the control module is configured to adjust the operating frequency of the compressor, and adjust the opening of the heating throttling element 35 based on the adjusted operating frequency of the compressor.
  • ⁇ P ⁇ P, or ⁇ P ⁇ Ps but Pc ⁇ Pcs (or Tc ⁇ Tcs), or ⁇ P ⁇ Ps but the compressor is in full operating frequency
  • the control module controls the opening of the heating throttling element 35 to keep unchanged.
  • control module first adjusts the operating frequency of the compressor first, and readjusts the opening of the heating throttling element 35 until the above conditions are met, indicating that the system has reached a steady state, and the opening of the heating throttling element 35 can be stabilized at the opening, such that the system can have better system performance and energy efficiency under heating, especially under partial load heating.
  • the control module obtains the target exhaust pressure of the compressor or the saturation temperature corresponding to the target exhaust pressure first, and controls the compressor based on the target exhaust pressure or the saturation temperature corresponding to the target exhaust pressure to make the compressor operate stably, after the compressor operates stably, the control module obtains the high pressure and the intermediate pressure of the shunt device, then, the control module calculates the pressure difference between the high pressure and the intermediate pressure, obtains the target pressure difference between the high pressure and the intermediate pressure of the shunt device, and adjusts the opening of the heating throttling element based on the pressure difference and the target pressure difference, such that the multi-split air conditioning system can not only meet liquid discharge requirements, but also have good performance and energy efficiency during heating, and especially during partial load heating, user experience can be improved.
  • first and second are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features.
  • the feature defined with “first” and “second” may include at least one feature.
  • a plurality of' means two or more than two.
  • the terms “mounted,” “connected,” “coupled,” “fixed” and the like are used broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications of two elements, which can be understood by those skilled in the art according to specific situations.
  • the logic and/or step described in other manners herein or shown in the flow chart, for example, a particular sequence table of executable instructions for realizing the logical function may be specifically achieved in any computer readable medium to be used by the instruction execution system, device or equipment (such as the system based on computers, the system including processors or other systems capable of obtaining the instruction from the instruction execution system, device and equipment and executing the instruction), or to be used in combination with the instruction execution system, device and equipment.
  • the computer readable medium may be any device adaptive for including, storing, communicating, propagating or transferring programs to be used by or in combination with the instruction execution system, device or equipment.
  • the computer readable medium include but are not limited to: an electronic connection (an electronic device) with one or more wires, a portable computer enclosure (a magnetic device), a random access memory (RAM), a read only memory (ROM), an erasable programmable read-only memory (EPROM or a flash memory), an optical fiber device and a portable compact disk read-only memory (CDROM).
  • the computer readable medium may even be a paper or other appropriate medium capable of printing programs thereon, this is because, for example, the paper or other appropriate medium may be optically scanned and then edited, decrypted or processed with other appropriate methods when necessary to obtain the programs in an electric manner, and then the programs may be stored in the computer memories.
  • each part of the present disclosure may be realized by the hardware, software, firmware or their combination.
  • a plurality of steps or methods may be realized by the software or firmware stored in the memory and executed by the appropriate instruction execution system.
  • the steps or methods may be realized by one or a combination of the following techniques known in the art: a discrete logic circuit having a logic gate circuit for realizing a logic function of a data signal, an application-specific integrated circuit having an appropriate combination logic gate circuit, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Claims (9)

  1. Verfahren zum Steuern eines Heizungsdrosselelement in einer Multisplit-Klimaanlage, wobei die Multisplit-Klimaanlage eine Außeneinheit (10), eine Shunt-Vorrichtung (30) und eine Vielzahl von Inneneinheiten (20) umfasst, wobei die Vielzahl von Inneneinheiten eine heizende Inneneinheit und eine kühlende Inneneinheit umfasst, die Außeneinheit (10) einen Verdichter umfasst und die Shunt-Vorrichtung (30) einen Gas-Flüssigkeitsabscheider (31), einen ersten Wärmetauscher (32), einen zweiten Wärmetauscher (33), ein erstes Drosselelement (34), ein Heizungsdrosselelement (35), einen Hochdrucksensor (PS1) und einen Zwischendrucksensor (PS2) umfasst, wobei ein Auslass eines ersten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) mit einem Einlass des ersten Drosselelements (34) in Verbindung steht, wobei ein Auslass des ersten Drosselelements (34) mit einem Einlass eines ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) in Verbindung steht, wobei ein Auslass eines zweiten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) mit einem Einlass eines zweiten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) in Verbindung steht, wobei das heizende Drosselelement (35) zwischen dem Auslass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) und dem Einlass des zweiten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) angeordnet ist, ein Einlass des Gas-Flüssigkeitsabscheiders (31) mit einem Auslass der Außeneinheit (10) verbunden ist, ein Flüssigkeitsauslass des Gas-Flüssigkeitsabscheiders (31) mit dem Einlass es ersten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) in Verbindung steht, und ein Dampfauslass des Gas-Flüssigkeitsabscheiders (31) mit einem Einlass der heizenden Inneneinheit in Verbindung steht, ein Auslass der heizenden Inneneinheit mit dem Einlass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) in Verbindung steht, der Auslass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) mit einem Einlass der kühlenden Inneneinheit in Verbindung steht, ein Auslass der kühlenden Inneneinheit und ein Auslass des zweiten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) mit einem Einlass der Außeneinheit (10) in Verbindung stehen, der Hochdrucksensor (PS1) an dem Auslass es ersten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) angeordnet ist, und der Zwischendrucksensor (PS2) an dem Einlass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) angeordnet ist, wobei das Verfahren Folgendes umfasst:
    (S1) : Erhalten eines Soll-Förderdrucks des Verdichters oder einer dem Soll-Förderdruck entsprechenden Sättigungstemperatur (Tc);
    (S2): Steuern des Verdichters basierend auf dem Soll-Förderdruck oder der dem Soll-Förderdruck entsprechenden Sättigungstemperatur (Tc), um zu bewirken, dass der Verdichter stabil arbeitet, Erhalten des Hochdrucks (PS1) und des Zwischendrucks (PS2) der Shunt-Vorrichtung (30), nachdem der Verdichter stabil arbeitet, und Berechnen einer Druckdifferenz zwischen dem Hochdruck und dem Zwischendruck, und gekennzeichnet durch:
    (S3): Erhalten einer Soll-Druckdifferenz zwischen dem Hochdruck und dem Zwischendruck der Shunt-Vorrichtung (30) und Anpassen einer Öffnung des Heizungsdrosselelements (35) basierend auf der Druckdifferenz und der Soll-Druckdifferenz.
  2. Verfahren nach Anspruch 1, wobei das Anpassen der Öffnung des Heizungsdrosselelements (35) basierend auf der Druckdifferenz und der Soll-Druckdifferenz Folgendes umfasst:
    S104: Verkleinern der Öffnung des Heizungsdrosselelements (35), wenn die Druckdifferenz größer als die Soll-Druckdifferenz ist; und
    S105: Vergrößern der Öffnung des Heizungsdrosselelements (35), wenn die Druckdifferenz kleiner als die Soll-Druckdifferenz ist; und
  3. Verfahren nach Anspruch 1 oder 2, wobei nach dem Anpassen der Öffnung des Heizungsdrosselelements (35) das Verfahren ferner Folgendes umfasst:
    Bestimmen, ob die Druckdifferenz gleich der Soll-Druckdifferenz ist, und
    Bestimmen, ob eine einem aktuellen Förderdruck des Verdichters entsprechende Sättigungstemperatur (Tc) größer oder gleich der dem Soll-Förderdruck des Verdichters entsprechenden Sättigungstemperatur (Tc) ist, und Bestimmen, ob eine Betriebsfrequenz des Verdichters größer oder gleich einer Höchstfrequenz ist; und
    Steuern der Öffnung des Heizungsdrosselelements (35) dazu, unverändert zu bleiben, wenn die Druckdifferenz gleich der Soll-Druckdifferenz ist, oder die dem aktuellen Förderdruck des Verdichters entsprechende Sättigungstemperatur (Tc) größer oder gleich der dem Soll-Förderdruck des Verdichters entsprechenden Sättigungstemperatur (Tc) ist, oder die Betriebsfrequenz des Verdichters größer oder gleich der Höchstfrequenz ist.
  4. Verfahren nach Anspruch 3, wobei, wenn die Druckdifferenz nicht gleich der Soll-Druckdifferenz ist oder die dem aktuellen Förderdruck des Verdichters entsprechende Sättigungstemperatur (Tc) geringer als die dem Soll-Förderdruck des Verdichters entsprechende Sättigungstemperatur (Tc) ist, und die Betriebsfrequenz des Verdichters geringer als die Höchstfrequenz ist, die Betriebsfrequenz des Verdichters angepasst wird und die Öffnung des Heizungsdrosselelements (35) basierend auf der angepassten Betriebsfrequenz des Verdichters angepasst wird.
  5. Multisplit-Klimaanlage, die Folgendes umfasst:
    eine Außeneinheit (10), umfassend einen Verdichter;
    eine Vielzahl von Inneneinheiten (20), umfassend eine heizende Inneneinheit und eine kühlende Inneneinheit,
    eine Shunt-Vorrichtung (30), umfassend einen Gas-Flüssigkeitsabscheider (31),
    einen ersten Wärmetauscher (32), einen zweiten Wärmetauscher (33), ein erstes Drosselelement (34), ein Heizungsdrosselelement (35), einen Hochdrucksensor (PS1) und einen Zwischendrucksensor (PS2), wobei ein Auslass eines ersten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) mit einem Einlass des ersten Drosselelements (34) in Verbindung steht, wobei ein Auslass des ersten Drosselelements (34) mit einem Einlass eines ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) in Verbindung steht, wobei ein Auslass eines zweiten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) mit einem Einlass eines zweiten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) in Verbindung steht, wobei das heizende Drosselelement (35) zwischen dem Auslass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) und dem Einlass des zweiten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) angeordnet ist, ein Einlass des Gas-Flüssigkeitsabscheiders (31) mit einem Auslass der Außeneinheit (10) verbunden ist, ein Flüssigkeitsauslass des Gas-Flüssigkeitsabscheiders (31) mit dem Einlass es ersten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) in Verbindung steht, und ein Dampfauslass des Gas-Flüssigkeitsabscheiders (31) mit einem Einlass der heizenden Inneneinheit in Verbindung steht, ein Auslass der heizenden Inneneinheit mit dem Einlass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) in Verbindung steht, der Auslass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) mit einem Einlass der kühlenden Inneneinheit in Verbindung steht, ein Auslass der kühlenden Inneneinheit und ein Auslass des zweiten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) mit einem Einlass der Außeneinheit (10) in Verbindung stehen, der Hochdrucksensor (PS1) an dem Auslass es ersten Wärmetausch-Strömungswegs des ersten Wärmetauschers (32) angeordnet ist, und der Zwischendrucksensor (PS2) an dem Einlass des ersten Wärmetausch-Strömungswegs des zweiten Wärmetauschers (33) angeordnet ist; und
    ein Steuermodul, das zu Folgendem konfiguriert ist:
    Erhalten eines Soll-Förderdrucks des Verdichters oder einer dem Soll-Förderdruck entsprechenden Sättigungstemperatur (Tc);
    Steuern des Verdichters basierend auf dem Soll-Förderdruck oder der dem Soll-Förderdruck entsprechenden Sättigungstemperatur (Tc), um zu bewirken, dass der Verdichter stabil arbeitet, Erhalten des Hochdrucks (PS1) und des Zwischendrucks (PS2) der Shunt-Vorrichtung (30),
    nachdem der Verdichter stabil arbeitet, und Berechnen einer Druckdifferenz zwischen dem Hochdruck und dem Zwischendruck, und
    dadurch gekennzeichnet, dass das Steuermodul ferner dazu konfiguriert ist, eine Soll-Druckdifferenz zwischen dem Hochdruck und dem Zwischendruck der Shunt-Vorrichtung (30) zu erhalten und eine Öffnung des Heizungsdrosselelements (35) basierend auf der Druckdifferenz und der Soll-Druckdifferenz anzupassen.
  6. Multisplit-Klimaanlage nach Anspruch 5, wobei, wenn das Steuermodul dazu konfiguriert ist, die Öffnung des Heizungsdrosselventils (35) basierend auf der Druckdifferenz und der Soll-Druckdifferenz anzupassen, das Steuermodul zu Folgendem konfiguriert ist:
    Verkleinern der Öffnung des Heizungsdrosselelements (35), wenn die Druckdifferenz größer als die Soll-Druckdifferenz ist; und
    Vergrößern der Öffnung des Heizungsdrosselelements (35), wenn die Druckdifferenz kleiner als die Soll-Druckdifferenz ist.
  7. Multisplit-Klimaanlage nach Anspruch 6, wobei nach dem Anpassen der Öffnung des Heizungsdrosselelements (35) das Steuermodul ferner zu Folgendem konfiguriert ist:
    Bestimmen, ob die Druckdifferenz gleich der Soll-Druckdifferenz ist, und
    Bestimmen, ob eine einem aktuellen Förderdruck des Verdichters entsprechende Sättigungstemperatur (Tc) größer als gleich der dem Soll-Förderdruck des Verdichters entsprechenden Sättigungstemperatur (Tc) ist, und Bestimmen, ob eine Betriebsfrequenz des Verdichters größer oder gleich einer Höchstfrequenz ist; und
    Steuern der Öffnung des Heizungsdrosselelements (35) dazu, unverändert zu bleiben, wenn die Druckdifferenz gleich der Soll-Druckdifferenz ist, oder die dem aktuellen Förderdruck des Verdichters entsprechende Sättigungstemperatur größer oder gleich der dem Soll-Förderdruck des Verdichters entsprechenden Sättigungstemperatur (Tc) ist, oder die Betriebsfrequenz des Verdichters größer oder gleich der Höchstfrequenz ist.
  8. Multisplit-Klimaanlage nach Anspruch 7, wobei, wenn die Druckdifferenz nicht gleich der Soll-Druckdifferenz ist oder die dem aktuellen Förderdruck des Verdichters entsprechende Sättigungstemperatur (Tc) geringer als die dem Soll-Förderdruck des Verdichters entsprechenden Sättigungstemperatur (Tc) ist, und die Betriebsfrequenz des Verdichters geringer als die Höchstfrequenz ist, das Steuermodul dazu konfiguriert ist, die Betriebsfrequenz des Verdichters anzupassen und die Öffnung des Heizungsdrosselelements (35) basierend auf der angepassten Betriebsfrequenz des Verdichters anzupassen.
  9. Nichtflüchtiges computerlesbares Speichermedium, auf dem Computerprogramme gespeichert sind, wobei, wenn die Computerprogramme von einem Prozessor ausgeführt werden, das Verfahren zum Steuern eines Heizungsdrosselelements (35) in einer Multisplit-Klimaanlage nach einem der Ansprüche 1-4 implementiert wird.
EP17802044.2A 2016-05-23 2017-05-09 Multisplit-system und verfahren zur steuerung der erwärmung eines drosselungselements dafür Active EP3467390B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610351236.9A CN106016457B (zh) 2016-05-23 2016-05-23 多联机系统及其制热节流元件的控制方法
PCT/CN2017/083654 WO2017202198A1 (zh) 2016-05-23 2017-05-09 多联机系统及其制热节流元件的控制方法

Publications (3)

Publication Number Publication Date
EP3467390A1 EP3467390A1 (de) 2019-04-10
EP3467390A4 EP3467390A4 (de) 2019-07-31
EP3467390B1 true EP3467390B1 (de) 2021-02-17

Family

ID=57094710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17802044.2A Active EP3467390B1 (de) 2016-05-23 2017-05-09 Multisplit-system und verfahren zur steuerung der erwärmung eines drosselungselements dafür

Country Status (3)

Country Link
EP (1) EP3467390B1 (de)
CN (1) CN106016457B (de)
WO (1) WO2017202198A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106016457B (zh) * 2016-05-23 2018-12-18 广东美的暖通设备有限公司 多联机系统及其制热节流元件的控制方法
CN106556113B (zh) * 2016-11-28 2019-07-26 广东美的暖通设备有限公司 多联机系统及其的中压节流元件的控制方法
CN107576110B (zh) * 2017-09-08 2019-12-27 合肥美的暖通设备有限公司 多联机系统及其控制方法和控制装置
CN110360704A (zh) * 2018-04-09 2019-10-22 珠海格力电器股份有限公司 空调连接管压力损耗补偿方法及装置
CN111473466B (zh) * 2020-04-21 2022-03-22 宁波奥克斯电气股份有限公司 一种频率控制方法及空调器
CN111578472B (zh) * 2020-05-29 2022-03-22 广东美的制冷设备有限公司 空调器室外机的控制方法及装置、空调器室外机及空调器
CN114061107B (zh) * 2021-12-27 2023-11-28 上海美控智慧建筑有限公司 一种多联机空调系统的控制方法及系统

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100220726B1 (ko) * 1997-02-11 1999-09-15 윤종용 멀티 에어콘
JPH1194384A (ja) * 1997-09-26 1999-04-09 Mitsubishi Heavy Ind Ltd 多室形空気調和装置
JP3849467B2 (ja) * 2001-07-11 2006-11-22 松下電器産業株式会社 空気調和機
KR20060030761A (ko) * 2004-10-06 2006-04-11 삼성전자주식회사 다실형 공기조화 시스템 및 그 제어방법
JP4888256B2 (ja) * 2007-06-29 2012-02-29 ダイキン工業株式会社 冷凍装置
CN101881498B (zh) * 2009-05-06 2012-11-14 欧威尔空调科技(中国)有限公司 多联式空调系统的控制方法和系统
CN103486700B (zh) * 2012-06-14 2016-03-30 珠海格力电器股份有限公司 一种空调器及其控制方法
US9903625B2 (en) * 2012-09-07 2018-02-27 Mitsubishi Electric Corporation Air-conditioning apparatus
US20150211776A1 (en) * 2012-10-01 2015-07-30 Mitsubishi Electric Corporation Air-conditioning apparatus
CN104685304B (zh) * 2012-10-02 2016-11-16 三菱电机株式会社 空调装置
CN105874282B (zh) * 2013-12-25 2019-03-22 三菱电机株式会社 空调装置
WO2016009488A1 (ja) * 2014-07-14 2016-01-21 三菱電機株式会社 空気調和装置
CN104266407A (zh) * 2014-10-21 2015-01-07 王仕相 空气源热泵机组
CN104748430B (zh) * 2015-03-31 2018-02-06 广东美的暖通设备有限公司 多联机系统
CN104896675B (zh) * 2015-06-12 2017-12-08 广东美的暖通设备有限公司 多联机系统的回气过热度测试方法和多联机系统
CN106016457B (zh) * 2016-05-23 2018-12-18 广东美的暖通设备有限公司 多联机系统及其制热节流元件的控制方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN106016457B (zh) 2018-12-18
WO2017202198A1 (zh) 2017-11-30
CN106016457A (zh) 2016-10-12
EP3467390A1 (de) 2019-04-10
EP3467390A4 (de) 2019-07-31

Similar Documents

Publication Publication Date Title
EP3467390B1 (de) Multisplit-system und verfahren zur steuerung der erwärmung eines drosselungselements dafür
US9206994B2 (en) Heat source system
US10684039B2 (en) Air conditioning and mode switching control method thereof
EP2270405B1 (de) Kühlvorrichtung
KR100922222B1 (ko) 공기조화 시스템
EP3477226A1 (de) Multisplit-system und steuerungsverfahren dafür
JP5182358B2 (ja) 冷凍装置
US11137157B2 (en) Method for controlling multi-split air conditioner, multi-split air conditioner system, and computer-readable storage medium
KR101479240B1 (ko) 공기조화기 및 그 제어방법
US20130274948A1 (en) Heat source system and method for controlling the number of operated devices in heat source system
EP3115715B1 (de) Kältekreislaufsystem
WO2021063088A1 (zh) 变频器的冷却系统、方法及空调设备
CN107477930B (zh) 空调系统、空调装置及其控制方法和控制装置
CN104006445A (zh) 多联式空调器及其控制方法
WO2021073035A1 (zh) 空调器及其控制方法、可读存储介质
CN111486574A (zh) 空调系统及其防凝露控制方法和装置、存储介质
KR102558826B1 (ko) 공기 조화 시스템 및 제어 방법
KR20090074437A (ko) 공기조화 시스템
US12066225B2 (en) Method and device for controlling pressure of units with height drop, and air conditioner device
CN111503854B (zh) 空调系统及其防凝露控制方法和装置、存储介质
KR20090069913A (ko) 공기조화 시스템
CN111678240A (zh) 空调设备的运行控制方法、空调设备和可读存储介质
JP3458293B2 (ja) 多室用空気調和機の運転制御装置
JP7415026B2 (ja) 冷凍サイクル装置
CN114364929B (zh) 室外单元以及冷冻循环装置

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181218

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

A4 Supplementary search report drawn up and despatched

Effective date: 20190703

RIC1 Information provided on ipc code assigned before grant

Ipc: F25B 29/00 20060101ALI20190627BHEP

Ipc: F24F 1/00 20190101AFI20190627BHEP

Ipc: F24F 11/00 20180101ALI20190627BHEP

Ipc: F25B 40/00 20060101ALI20190627BHEP

Ipc: F25B 49/02 20060101ALI20190627BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200423

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20201130

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017032847

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1361969

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210315

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210517

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210518

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210517

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210617

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1361969

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210617

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602017032847

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602017032847

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20211118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210509

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210509

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210617

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20170509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240522

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240522

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210217