WO2017185514A1 - Climatiseur de refroidissement et de chauffage, climatiseur de refroidissement uniquement, et procédé de commande pour climatiseur - Google Patents

Climatiseur de refroidissement et de chauffage, climatiseur de refroidissement uniquement, et procédé de commande pour climatiseur Download PDF

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Publication number
WO2017185514A1
WO2017185514A1 PCT/CN2016/087933 CN2016087933W WO2017185514A1 WO 2017185514 A1 WO2017185514 A1 WO 2017185514A1 CN 2016087933 W CN2016087933 W CN 2016087933W WO 2017185514 A1 WO2017185514 A1 WO 2017185514A1
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WO
WIPO (PCT)
Prior art keywords
temperature
throttle element
opening degree
exhaust
air conditioner
Prior art date
Application number
PCT/CN2016/087933
Other languages
English (en)
Chinese (zh)
Inventor
杨亚新
李金波
刘湍顺
戚文端
陈明瑜
任超
孙兴
魏洪涛
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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
Priority claimed from CN201620390400.2U external-priority patent/CN205641641U/zh
Priority claimed from CN201610281176.8A external-priority patent/CN105758038A/zh
Priority claimed from CN201610286093.8A external-priority patent/CN105783310B/zh
Priority claimed from CN201610286119.9A external-priority patent/CN105783312B/zh
Priority claimed from CN201610285970.XA external-priority patent/CN105783309A/zh
Priority claimed from CN201620388621.6U external-priority patent/CN205980069U/zh
Priority claimed from CN201610286724.6A external-priority patent/CN105783314B/zh
Priority claimed from CN201610286725.0A external-priority patent/CN105783325A/zh
Priority claimed from CN201620390148.5U external-priority patent/CN205641640U/zh
Priority claimed from CN201610284972.7A external-priority patent/CN105758039B/zh
Priority claimed from CN201620390779.7U external-priority patent/CN205641647U/zh
Priority claimed from CN201620390778.2U external-priority patent/CN205641646U/zh
Priority claimed from CN201610280074.4A external-priority patent/CN105758036A/zh
Priority claimed from CN201620390516.6U external-priority patent/CN205641642U/zh
Priority claimed from CN201620390674.1U external-priority patent/CN205641644U/zh
Priority claimed from CN201620388590.4U external-priority patent/CN205641637U/zh
Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Publication of WO2017185514A1 publication Critical patent/WO2017185514A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • 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
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • 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

Definitions

  • the invention relates to the field of refrigeration, and in particular to a control method for a cold and warm air conditioner, a single cold air conditioner and an air conditioner.
  • the air conditioning refrigeration system does not optimize the circulation design of the gaseous refrigerant before the throttle and enters the evaporator, which causes the gaseous refrigerant to affect the heat exchange performance of the evaporator and increase the compression power consumption of the compressor, thereby affecting the energy efficiency level of the air conditioner.
  • Jet boosting and two-stage compression technology can improve the heating capacity of air conditioning systems at low and ultra-low temperatures, but for the cooling conditions often used in air conditioners, energy efficiency is very limited.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent.
  • the present invention proposes a cold and warm type air conditioner, which can effectively improve the energy efficiency of the air conditioner and effectively promote energy saving and emission reduction.
  • the invention also provides a single-cooling type air conditioner, which can effectively improve the energy efficiency of the air conditioner and effectively promote energy saving and emission reduction.
  • the invention further proposes a control method for an air conditioner.
  • a cooling and heating type air conditioner includes: a two-cylinder compressor including a casing, a first cylinder, a second cylinder, and a first accumulator, and the casing is provided with a row a first port and the second cylinder are respectively disposed in the housing, the first accumulator is disposed outside the housing, an intake port of the first cylinder and the first The accumulator is in communication, the ratio of the exhaust volume ratio of the second cylinder and the first cylinder is in the range of 1% to 10%; and the reversing assembly includes the first to fourth valves a first valve port communicating with one of the second valve port and the third valve port, the fourth valve port being in communication with the other of the second valve port and the third valve port, a first valve port is connected to the exhaust port, the fourth valve port is connected to the first reservoir; an outdoor heat exchanger and an indoor heat exchanger, and the first end of the outdoor heat exchanger is a second valve port is connected, a first end of the indoor heat exchanger is connected to
  • the energy efficiency of the air conditioner can be effectively improved, energy saving and emission reduction can be effectively promoted, and the heat exchange efficiency can be improved and the compressor compression can be reduced by providing a gas-liquid separator. Power consumption, further improve the air conditioner capacity and energy efficiency, and by setting a refrigerant radiator, the electronic control components can be effectively cooled.
  • a solenoid valve is connected in series between the gas outlet and the suction port of the second cylinder.
  • the volume of the gas-liquid separator ranges from 100 mL to 500 mL.
  • the cooling and heating type air conditioner further includes a control valve connected in parallel with the refrigerant radiator, wherein the control valve shuts off circulation of the refrigerant during cooling, and the refrigerant flows through the control valve during heating.
  • control valve is a one-way valve that is unidirectional in a direction from the second throttle element to the first throttle element.
  • the two-cylinder compressor further includes a second accumulator disposed outside the housing, the second accumulator being connected in series at the gas outlet and the second cylinder Between the suction ports.
  • the volume of the first reservoir is greater than the volume of the second reservoir.
  • a single-cooling type air conditioner includes: a two-cylinder compressor including a housing, a first cylinder, a second cylinder, and a first accumulator, and the housing is provided with An exhaust port, the first cylinder and the second cylinder are respectively disposed in the housing, the first accumulator is disposed outside the housing, an intake port of the first cylinder and the first a reservoir is connected, the ratio of the exhaust volume ratio of the second cylinder and the first cylinder is in the range of 1% to 10%; the outdoor heat exchanger and the indoor heat exchanger, the outdoor heat exchanger a first end is connected to the exhaust port, a first end of the indoor heat exchanger is connected to the first accumulator; a gas-liquid separator, the gas-liquid separator comprises a gas outlet, a first interface, and a second interface, the gas outlet is connected to an air inlet of the second cylinder, the first interface is connected to a second end of the outdoor heat exchanger, and the second interface is connected to the indoor heat exchanger
  • the single-cooling type air conditioner of the embodiment of the present invention by providing the above-mentioned two-cylinder compressor, the energy efficiency of the air conditioner can be effectively improved, energy saving and emission reduction can be effectively promoted, and the heat exchange efficiency can be improved and the compressor can be reduced by providing the gas-liquid separator. Compressing power consumption, further improving the capacity and energy efficiency of the air conditioner, and by setting a refrigerant radiator, the electronic control unit can be effectively cooled.
  • a solenoid valve is connected in series between the gas outlet and the suction port of the second cylinder.
  • the volume of the gas-liquid separator ranges from 100 mL to 500 mL.
  • the two-cylinder compressor further includes a second accumulator disposed outside the housing, the second accumulator being connected in series at the gas outlet and the second cylinder Between the suction ports.
  • the volume of the first reservoir is greater than the volume of the second reservoir.
  • the air conditioner is the cold and warm type air conditioner according to the above embodiment of the present invention, or the single cold type air conditioner according to the above embodiment of the present invention, when the air conditioner is operated,
  • the first throttling element and the throttling element located upstream of the second throttling element are primary throttling elements, and throttling elements located downstream of the first throttling element and the second throttling element
  • the set opening degree is smaller than the set opening degree of the secondary throttle element, and the detection result of the first detection object is different from the detection result of
  • the control method of the air conditioner according to the embodiment of the present invention makes the energy efficiency of the system optimal.
  • the first detection object and/or the second detection object are an outdoor ambient temperature T4 and an operating frequency F, and are calculated according to the detected outdoor ambient temperature T4 and the operating frequency F.
  • the corresponding throttle element with adjustable opening degree sets the opening degree, and then adjusts the opening degree of the corresponding throttle element according to the set opening degree.
  • the first detection object and/or the second detection object are an outdoor ambient temperature T4, an operating frequency F, and an exhaust pressure; or an outdoor ambient temperature T4, an operating frequency F, and a row
  • the gas temperature is first calculated according to the outdoor ambient temperature T4 and the operating frequency F to obtain a set exhaust pressure or set an exhaust temperature, and then adjust the corresponding opening according to the actually detected exhaust pressure or exhaust temperature.
  • the opening of the throttle element is adjusted such that the detected exhaust pressure or exhaust temperature reaches a set exhaust pressure or sets an exhaust temperature.
  • a plurality of outdoor temperature intervals are preset, each of the outdoor temperature intervals corresponding to an opening degree of a different throttling element, and the first detecting object and/or the second detecting object is an outdoor ambient temperature T4 According to the actual test The opening degree corresponding to the outdoor temperature range in which the outdoor ambient temperature T4 is located is adjusted to the opening degree of the throttle element with the adjustable opening degree.
  • the intermediate temperature or the preset intermediate pressure is preset
  • the first detection object and/or the second detection object is an intermediate pressure or an intermediate temperature, and is adjusted according to the actually detected intermediate pressure or intermediate temperature.
  • the opening of the throttle element which is adjustable in opening degree, is such that the detected intermediate pressure or intermediate temperature reaches a preset intermediate pressure or a preset intermediate temperature.
  • a plurality of outdoor temperature intervals are preset, each of the outdoor temperature intervals corresponding to a different set temperature of the gas-liquid separator, the first detection object and/or the first
  • the second detection object is the outdoor ambient temperature T4 and the temperature of the gas-liquid separator.
  • a plurality of different exhaust temperature intervals are preset, the plurality of exhaust temperatures
  • the adjustment command of the operating frequency corresponding to the interval is different, and the exhaust gas temperature is detected and the operating frequency is adjusted according to an adjustment command corresponding to the exhaust gas temperature range in which the detected exhaust gas temperature is located.
  • a plurality of outdoor temperature intervals, a heating shutdown protection current, and a cooling shutdown protection current are preset.
  • the plurality of outdoor temperature intervals correspond to different frequency limiting protection currents, first detecting the outdoor ambient temperature, and then obtaining a corresponding frequency limiting protection current according to the detected outdoor temperature interval in which the outdoor ambient temperature is located, and adjusting the operating frequency to The actually detected operating current reaches the corresponding frequency limiting protection current, wherein the operating current detected when cooling is greater than the cooling shutdown protection current is directly stopped; the operating current detected when heating If it is greater than the heating shutdown protection current, it will stop directly.
  • a plurality of different exhaust pressure intervals are preset, the plurality of exhaust pressures
  • the adjustment command of the operating frequency corresponding to the interval is different, the exhaust pressure is detected, and the operating frequency is adjusted according to an adjustment command corresponding to the exhaust pressure range in which the detected exhaust pressure is located.
  • FIG. 1 to 6 are schematic views of a cold and warm type air conditioner according to various embodiments of the present invention.
  • FIG. 7-11 are schematic views of a single cold type air conditioner according to various embodiments of the present invention.
  • Figure 12 is a schematic illustration of a two-cylinder compressor in accordance with an embodiment of the present invention.
  • FIG. 13 is a flow chart showing a control method of a cooling and heating type air conditioner/single-cool type air conditioner during cooling according to an embodiment of the present invention,
  • the opening of the first throttle element and the second throttle element are adjustable;
  • FIG. 14 is a flowchart of a control method of heating and cooling of a cold and warm air conditioner according to an embodiment of the present invention, wherein opening degrees of the first throttle element and the second throttle element are both adjustable;
  • FIG. 15 is a flow chart of a control method for cooling a cold-air type air conditioner/single-cool type air conditioner according to an embodiment of the present invention, wherein a first throttle element opening degree is fixed, and a second throttle element opening degree is adjustable;
  • FIG. 16 is a flowchart of a control method for heating and heating of a cold and warm air conditioner according to an embodiment of the present invention, wherein a first throttle element has a fixed opening degree, and a second throttle element has an open degree;
  • FIG. 17 is a flow chart of a control method for cooling a cold-air type air conditioner/single-cool type air conditioner according to an embodiment of the present invention, wherein a first throttle element opening degree is adjustable, and a second throttle element opening degree is fixed;
  • FIG. 18 is a flow chart of a control method for heating and cooling of a cold and warm air conditioner according to an embodiment of the present invention, wherein a first throttle element opening degree is adjustable, and a second throttle element opening degree is fixed;
  • FIG. 19 is a flowchart of a control method of a cold and warm air conditioner according to an embodiment of the present invention, in which opening degrees of the first throttle element and the second throttle element are fixed;
  • 20 is a flowchart of a control method of a single-cooling type air conditioner in which opening degrees of the first throttle element and the second throttle element are fixed, according to an embodiment of the present invention.
  • Cooling and heating air conditioner 100 Cooling and heating air conditioner 100
  • a two-cylinder compressor 1 a casing 10, a first cylinder 11, a second cylinder 12, a first accumulator 13, a second accumulator 14, an exhaust port 15,
  • Reversing assembly 2 first valve port D, second valve port C, third valve port E, fourth valve port S,
  • Outdoor heat exchanger 3 indoor heat exchanger 4
  • Gas-liquid separator 5 gas outlet m, first interface f, second interface g,
  • Solenoid valve 20 Solenoid valve 20.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • a cooling and heating type air conditioner 100 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 6, and FIG. 12, wherein the cooling and heating type air conditioner 100 has a cooling mode and a heating mode.
  • the cold and warm air conditioner 100 includes: a two-cylinder compressor 1 , a reversing component 2 , an outdoor heat exchanger 3 , and an indoor heat exchanger 4 , and a gas.
  • the two-cylinder compressor 1 includes a casing 10, a first cylinder 11, a second cylinder 12, and a first accumulator 13.
  • the casing 10 is provided with an exhaust port 15, and the first cylinder 11 and the second cylinder 12 are respectively provided.
  • the first accumulator 13 is disposed outside the casing 10, and the intake port of the first cylinder 11 communicates with the first accumulator 13. That is, the first cylinder 11 and the second cylinder 12 perform an independent compression process, and the compressed refrigerant discharged from the first cylinder 11 and the compressed refrigerant discharged from the second cylinder 12 are discharged into the casing 10, respectively. It is discharged from the exhaust port 15.
  • the ratio of the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 ranges from 1% to 10%. Further, the ratio of the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 ranges from 1% to 9%. Preferably, the ratio of the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 ranges from 4% to 9%.
  • the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 may be a parameter such as 4%, 5%, 8%, or 8.5%.
  • the reversing assembly 2 includes a first valve port D to a fourth valve port S, the first valve port D is in communication with one of the second valve port C and the third valve port E, and the fourth valve port S and the second valve port C communicates with the other of the third valve ports E, the first valve port D is connected to the exhaust port 15, and the fourth valve port S is connected to the first accumulator 13.
  • the first end of the outdoor heat exchanger 3 is connected to the second valve port C, and the first end of the indoor heat exchanger 4 is connected to the third valve port E.
  • the first valve port D is in communication with the second valve port C and the third valve port E is in communication with the fourth valve port S.
  • the first The valve port D communicates with the third valve port E and the second valve port C communicates with the fourth valve port S.
  • the reversing assembly 2 It is a four-way valve.
  • the gas-liquid separator 5 includes a gas outlet m, a first interface f and a second interface g, the gas outlet m is connected to the suction port of the second cylinder 12, and the first interface f is connected to the second end of the outdoor heat exchanger 3,
  • the second interface g is connected to the second end of the indoor heat exchanger 4, and the first throttle element 6 is connected in series between the first interface f and the outdoor heat exchanger 3, and the second interface g and the indoor heat exchanger 4 are connected in series There is a second throttle element 7.
  • the opening degrees of the first throttle element 6 and the second throttle element 7 are both adjustable, optionally, the first throttle element 6 is an electronic expansion valve, and the second throttle element 7 is The electronic expansion valve, of course, can be understood that the first throttle element 6 and the second throttle element 7 can also be other adjustable opening elements such as thermal expansion valves.
  • the opening of the first throttle element 6 is adjustable and the opening of the second throttle element 7 is fixed, optionally the first throttle element 6 is an electronic expansion valve, the second section
  • the flow element 7 is a capillary or a throttle valve. It will of course be understood that the first throttle element 6 can also be other open-width adjustable elements such as a thermal expansion valve.
  • the opening of the first throttle element 6 is fixed and the opening of the second throttle element 7 is fixed, optionally the first throttle element 6 is a capillary or a throttle valve, and second The throttle element 7 is an electronic expansion valve, although it will of course be understood that the second throttle element 7 can also be other adjustable opening elements such as a thermal expansion valve.
  • both the opening degrees of the first throttle element 6 and the second throttle element 7 are both fixed.
  • both the first throttle element 6 and the second throttle element 7 may be capillary tubes or Throttle valve.
  • the refrigerant radiator 9 is for dissipating heat from the electronic control unit, the refrigerant radiator 9 is connected in series between the first throttle element and the first interface f; or the refrigerant radiator 9 is connected in series to the second throttle element 7 and the second interface g between. It can be understood that the structure of the refrigerant radiator 9 can be various as long as the refrigerant can be circulated, for example, the refrigerant radiator 9 can include a metal tube extending from the crucible.
  • the high-temperature high-pressure refrigerant discharged from the exhaust port 15 of the two-cylinder compressor 1 is discharged into the outdoor heat exchanger 3 through the first valve port D and the second valve port C to perform condensation heat dissipation.
  • the liquid refrigerant discharged from the outdoor heat exchanger 3 is depressurized by the first throttling element 6 and then discharged from the first interface f into the gas-liquid separator 5 for gas-liquid separation, and the separated intermediate pressure gas state
  • the refrigerant is discharged from the gas outlet m into the second cylinder 12 for compression.
  • the intermediate pressure liquid refrigerant discharged from the second port g of the gas-liquid separator 5 is depressurized by the secondary throttling of the second throttling element 7 and then discharged into the indoor heat exchanger 4 for heat exchange to reduce the indoor ambient temperature.
  • the refrigerant discharged from the indoor heat exchanger 4 is discharged into the first accumulator 13 through the third port E and the fourth port S, and the refrigerant discharged from the first accumulator 13 is discharged into the first cylinder 11 Compress.
  • the refrigerant radiator 9 When the refrigerant radiator 9 is connected in series between the first throttle element 6 and the first interface f, the refrigerant that has been throttled and depressurized from the first throttle element 6 flows into the refrigerant radiator 9 The heat is dissipated from the electronic control unit, and the refrigerant flowing out of the refrigerant radiator 9 is discharged into the gas-liquid separator 5, whereby the temperature of the electronic control unit can be lowered.
  • the refrigerant radiator 9 When the refrigerant radiator 9 is connected in series between the second throttle element 7 and the second interface g, the one section discharged from the gas-liquid separator 5 The liquid refrigerant that has been depressurized and subjected to gas-liquid separation enters the refrigerant radiator 9 to dissipate heat with the electronic control unit, thereby reducing the temperature of the electronic control unit.
  • the high temperature and high pressure refrigerant discharged from the exhaust port 15 of the twin cylinder compressor 1 is discharged into the indoor heat exchanger 4 through the first valve port D and the third valve port E for condensation heat dissipation.
  • the high-pressure liquid refrigerant discharged from the indoor heat exchanger 4 is depressurized by the first throttling element 7 and then discharged from the second port g into the gas-liquid separator 5 for gas-liquid separation.
  • the separated, separated intermediate pressure gaseous refrigerant is discharged from the gas outlet m into the second cylinder 12 for compression.
  • the intermediate pressure liquid refrigerant discharged from the first port f of the gas-liquid separator 5 is depressurized by the secondary throttling of the first throttling element 6 and discharged into the outdoor heat exchanger 3 for heat exchange from the outdoor heat exchanger.
  • the discharged refrigerant is discharged into the first accumulator 13 through the second port C and the fourth port S, and the refrigerant discharged from the first accumulator 13 is discharged into the first cylinder 11 for compression.
  • the refrigerant radiator 9 During heating, when the refrigerant radiator 9 is connected in series between the first throttle element 6 and the first interface f, the liquid refrigerant discharged from the gas-liquid separator 5 through a throttling and pressure-removing and gas-liquid separation enters The inside of the refrigerant radiator 9 dissipates heat with the electronic control unit, so that the temperature of the electronic control unit can be lowered.
  • the refrigerant radiator 9 is connected in series between the second throttle element 7 and the second interface g, the refrigerant that has been throttled and depressurized from the second throttle element 7 flows into the refrigerant radiator 9 to be electrically connected.
  • the control element dissipates heat, and the refrigerant flowing out of the refrigerant radiator 9 is discharged into the gas-liquid separator 5, so that the temperature of the electronic control unit can be lowered.
  • the refrigerants of different pressure states enter the first cylinder 11 and the second cylinder 12, respectively, and the first cylinder 11 and the second cylinder 12 independently complete the compression process, from the first
  • the compressed refrigerant discharged from the cylinder 11 and the compressed refrigerant discharged from the second cylinder 12 are discharged into the casing 10 and discharged from the exhaust port 15 while being exhausted by the second cylinder 12 and the first cylinder 11
  • the ratio of the ratio is from 1% to 10%, and the refrigerant having a small flow rate and a high pressure state is discharged into the second cylinder 12 having a small exhaust volume for compression, thereby improving energy efficiency, energy saving and emission reduction.
  • the gas-liquid separator 5 separates a part of the gaseous refrigerant and then discharges it back into the second cylinder 12 for compression.
  • the gas content in the refrigerant flowing into the indoor heat exchanger 4 during cooling is reduced, and the gas content flowing into the refrigerant of the outdoor heat exchanger 3 during heating is reduced, and the gaseous refrigerant is reduced to the indoor heat exchanger as the evaporator. 4 or the influence of the heat exchange performance of the outdoor heat exchanger 3, thereby improving the heat exchange efficiency and reducing the compression power consumption of the compressor.
  • the energy efficiency of the air conditioner can be effectively improved, energy saving and emission reduction can be effectively promoted, and the heat exchange efficiency can be improved and the heat exchange efficiency can be reduced by providing the gas-liquid separator 5.
  • the compression power consumption of the compressor further improves the capacity and energy efficiency of the air conditioner, and the cooling element 9 can be used to effectively cool the electronic control unit.
  • a solenoid valve 20 is connected in series between the gas outlet m and the suction port of the second cylinder 12, whereby the liquid refrigerant in the gas-liquid separator 5 exceeds the safety liquid.
  • the liquid refrigerant can be prevented from entering the second cylinder 12 by closing the solenoid valve 20, so that the liquidostatic operation of the twin-cylinder compressor 1 can be avoided, and the service life of the twin-cylinder compressor 1 can be prolonged.
  • a liquid level sensor may be provided on the gas-liquid separator 5, and the opening and closing state of the electromagnetic valve 20 may be controlled by the detection result of the liquid level sensor.
  • the volume of the gas-liquid separator 5 ranges from 100 mL to 500 mL.
  • the two-cylinder compressor 1 further includes a second accumulator 14 disposed outside the housing 10, the second accumulator 14 being connected in series at the gas outlet m Between the suction port of the second cylinder 12. Therefore, by providing the second accumulator 14, the refrigerant discharged from the gas outlet m of the gas-liquid separator 5 can be further subjected to gas-liquid separation, and the liquid refrigerant can be further prevented from returning to the second cylinder 12, thereby avoiding twin-cylinder compression.
  • the machine 1 has a liquid impact phenomenon, which improves the service life of the two-cylinder compressor 1.
  • the volume of the first reservoir 13 is greater than the volume of the second reservoir 14.
  • the cost can be reduced by making the volume of the second accumulator 14 small while ensuring the amount of compression of the second cylinder 12.
  • the volume of the second reservoir 14 is no more than one-half the volume of the first reservoir 13.
  • the air conditioner 100 further includes a control valve 8, which is connected in parallel with the refrigerant radiator 9, and the control valve 8 shuts off the circulation of the refrigerant during cooling, and the refrigerant flows through the control valve 8 during heating.
  • the control valve 8 is a one-way valve that is unidirectional in the direction from the second throttle element 7 to the first throttle element 6. It will of course be understood that the control valve 8 can also be a solenoid valve.
  • the cooling and heating type air conditioner 100 when the cooling and heating type air conditioner 100 is cooling, since the control valve 8 shuts off the flow of the refrigerant, the refrigerant discharged from the first throttle element 6 or the gas-liquid separator 5 flows into the refrigerant radiator 9 and the electronic control unit.
  • the heat exchange is performed to achieve the purpose of lowering the temperature of the electronic control unit.
  • the heating and cooling air conditioner 100 is heated, since the control valve 8 is turned on, most of the refrigerant discharged from the second throttle element 7 or the gas-liquid separator 5 passes through the control valve 8, and only a small portion or no refrigerant flows through.
  • the refrigerant radiator 9 is such that most or even all of the refrigerant flows to the outdoor heat exchanger 3 during heating, and the heating effect of the air-conditioning unit 100 can be improved.
  • the inventors have the energy efficiency of the cold and warm type air conditioner according to the above embodiment of the present invention (setting the rated cooling capacity to be 3.5 kw and setting the exhaust volume ratio of the second cylinder and the first cylinder to 7.6%) under different working conditions. Comparing with the energy efficiency of the existing cold and warm air conditioner under the same working conditions, the following data are obtained:
  • the air-conditioning type air conditioner according to the embodiment of the present invention has a significant improvement in energy efficiency and annual energy efficiency APF compared with the existing air-cooling type compressor.
  • the inventors compared the cold and warm air conditioners of the embodiments of the present invention with different rated cooling capacities and different exhaust volume ratios with the existing cold and warm air conditioners under the same working conditions, and found that the energy efficiency is improved, for example, the inventors passed The test found that the cold and warm air conditioner according to the embodiment of the present invention (sets the rated cooling capacity to 2.6 kW, and sets the exhaust volume ratio of the second cylinder and the first cylinder to 9.2%) and the existing cold and warm under the same working condition. Compared with the type of air conditioner, the energy efficiency increased by 7.3%.
  • a single-cooling type air conditioner 100 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 7 to 12, in which the single-cooling type air conditioner 100 has a cooling mode.
  • a single-cooling type air conditioner 100 includes: a two-cylinder compressor 1, an outdoor heat exchanger 3, an indoor heat exchanger 4, a gas-liquid separator 5, and a first The throttle element 6, the second throttle element 7, and the refrigerant radiator 9.
  • the two-cylinder compressor 1 includes a casing 10, a first cylinder 11, a second cylinder 12, and a first accumulator 13.
  • the casing 10 is provided with an exhaust port 15, and the first cylinder 11 and the second cylinder 12 are respectively provided.
  • the first accumulator 13 is disposed outside the casing 10, and the intake port of the first cylinder 11 communicates with the first accumulator 13.
  • the first cylinder 11 and the second cylinder 12 perform an independent compression process, and the compressed refrigerant discharged from the first cylinder 11 and the compressed refrigerant discharged from the second cylinder 12 are discharged into the casing 10, respectively. It is discharged from the exhaust port 15.
  • the ratio of the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 ranges from 1% to 10%. Further, the ratio of the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 ranges from 1% to 9%. Preferably, the ratio of the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 ranges from 4% to 9%.
  • the exhaust volume ratio of the second cylinder 12 and the first cylinder 11 may be a parameter such as 4%, 5%, 8%, or 8.5%.
  • the first end of the outdoor heat exchanger 3 is connected to the exhaust port 15, and the first end of the indoor heat exchanger 4 is connected to the first accumulator 13.
  • the gas-liquid separator 5 includes a gas outlet m, a first interface f and a second interface g, the gas outlet m is connected to the suction port of the second cylinder 12, and the first interface f is connected to the second end of the outdoor heat exchanger 3,
  • the second interface g is connected to the second end of the indoor heat exchanger 4, and the first throttle element 6 is connected in series between the first interface f and the outdoor heat exchanger 3, and the second interface g and the indoor heat exchanger 4 are connected in series There is a second throttle element 7.
  • the opening degrees of the first throttle element 6 and the second throttle element 7 are both adjustable, optionally, the first throttle element 6 is an electronic expansion valve, and the second throttle element 7 is The electronic expansion valve, of course, can be understood that the first throttle element 6 and the second throttle element 7 can also be other adjustable opening elements such as thermal expansion valves.
  • the opening of the first throttle element 6 is adjustable and the opening of the second throttle element 7 is fixed
  • the first throttle element 6 is an electronic expansion valve
  • the second throttle element 7 is a capillary tube or a throttle valve.
  • the first throttle element 6 can also be other components with adjustable opening degrees. For example, a thermal expansion valve.
  • the opening of the first throttle element 6 is fixed and the opening of the second throttle element 7 is fixed, optionally the first throttle element 6 is a capillary or a throttle valve, and second The throttle element 7 is an electronic expansion valve, although it will of course be understood that the second throttle element 7 can also be other adjustable opening elements such as a thermal expansion valve.
  • both the opening degrees of the first throttle element 6 and the second throttle element 7 are both fixed.
  • both the first throttle element 6 and the second throttle element 7 may be capillary tubes or Throttle valve.
  • the refrigerant radiator 9 is for dissipating heat from the electronic control unit, the refrigerant radiator 9 is connected in series between the first throttle element and the first interface f; or the refrigerant radiator 9 is connected in series to the second throttle element 7 and the second interface g between. It can be understood that the structure of the refrigerant radiator 9 can be various as long as the refrigerant can be circulated, for example, the refrigerant radiator 9 can include a metal tube extending from the crucible.
  • the high-temperature high-pressure refrigerant discharged from the exhaust port 15 of the two-cylinder compressor 1 is discharged into the outdoor heat exchanger 3 to perform condensation heat dissipation, and the liquid refrigerant discharged from the outdoor heat exchanger 3 passes through.
  • the first throttling element 6 is throttled from the first interface f to the gas-liquid separator 5 for gas-liquid separation, and the separated intermediate pressure gaseous refrigerant is discharged from the gas outlet m to the second cylinder. Compressed within 12.
  • the intermediate pressure liquid refrigerant discharged from the second port g of the gas-liquid separator 5 is depressurized by the secondary throttling of the second throttling element 7 and then discharged into the indoor heat exchanger 4 for heat exchange to reduce the indoor ambient temperature.
  • the refrigerant discharged from the indoor heat exchanger 4 is discharged into the first accumulator 13, and the refrigerant discharged from the first accumulator 13 is discharged into the first cylinder 11 to be compressed.
  • the refrigerant radiator 9 When the refrigerant radiator 9 is connected in series between the first throttle element 6 and the first interface f, the refrigerant that has been throttled and depressurized from the first throttle element 6 flows into the refrigerant radiator 9 The heat is dissipated from the electronic control unit, and the refrigerant flowing out of the refrigerant radiator 9 is discharged into the gas-liquid separator 5, whereby the temperature of the electronic control unit can be lowered.
  • the refrigerant radiator 9 When the refrigerant radiator 9 is connected in series between the second throttle element 7 and the second interface g, the liquid refrigerant discharged from the gas-liquid separator 5 through a throttling and pressure-removing and gas-liquid separation enters the refrigerant radiator 9 The heat is dissipated with the electronic control component to reduce the temperature of the electronic control component.
  • the refrigerants of different pressure states enter the first cylinder 11 and the second cylinder 12, respectively, and the first cylinder 11 and the second cylinder 12 independently complete the compression process.
  • the compressed refrigerant discharged from one cylinder 11 and the compressed refrigerant discharged from the second cylinder 12 are discharged into the casing 10 and discharged from the exhaust port 15 while being exhausted by the second cylinder 12 and the first cylinder 11
  • the volume ratio ranges from 1% to 10%, and the refrigerant having a small flow rate and a high pressure state is discharged into the second cylinder 12 having a small exhaust volume for compression, thereby improving energy efficiency, energy saving and emission reduction.
  • the gas-liquid separator 5 separates a part of the gaseous refrigerant and then discharges it back into the second cylinder 12 for compression. Reduced the flow into the room during cooling
  • the gas content in the refrigerant of the inner heat exchanger 4 reduces the influence of the gaseous refrigerant on the heat exchange performance of the indoor heat exchanger 4 as an evaporator, thereby improving heat exchange efficiency and reducing compressor compression power consumption.
  • the single-cooling type air conditioner 100 by providing the above-described two-cylinder compressor 1, the energy efficiency of the air conditioner can be effectively improved, energy saving and emission reduction can be effectively promoted, and the heat exchange efficiency can be improved by providing the gas-liquid separator 5.
  • the compression power consumption of the compressor is reduced, the capacity and energy efficiency of the air conditioner are further improved, and the electronic radiator 9 can be effectively cooled by the refrigerant radiator 9.
  • a solenoid valve 20 is connected in series between the gas outlet m and the suction port of the second cylinder 12, whereby the liquid refrigerant in the gas-liquid separator 5 exceeds the safety liquid.
  • the liquid refrigerant can be prevented from entering the second cylinder 12 by closing the solenoid valve 20, so that the liquidostatic operation of the twin-cylinder compressor 1 can be avoided, and the service life of the twin-cylinder compressor 1 can be prolonged.
  • a liquid level sensor may be provided on the gas-liquid separator 5, and the opening and closing state of the electromagnetic valve 20 may be controlled by the detection result of the liquid level sensor.
  • the volume of the gas-liquid separator 5 ranges from 100 mL to 500 mL.
  • the two-cylinder compressor 1 further includes a second accumulator 14 disposed outside the housing 10, the second accumulator 14 being connected in series at the gas outlet m Between the suction port of the second cylinder 12. Therefore, by providing the second accumulator 14, the refrigerant discharged from the gas outlet m of the gas-liquid separator 5 can be further subjected to gas-liquid separation, and the liquid refrigerant can be further prevented from returning to the second cylinder 12, thereby avoiding twin-cylinder compression.
  • the machine 1 has a liquid impact phenomenon, which improves the service life of the two-cylinder compressor 1.
  • the volume of the first reservoir 13 is greater than the volume of the second reservoir 14.
  • the cost can be reduced by making the volume of the second accumulator 14 small while ensuring the amount of compression of the second cylinder 12.
  • the volume of the second reservoir 14 is no more than one-half the volume of the first reservoir 13.
  • the inventors will use a single-cooling type air conditioner according to the above embodiment of the present invention (set the rated cooling capacity to be 3.5 kw, and set the exhaust volume ratio of the second cylinder and the first cylinder to 7.6%) under different operating conditions.
  • the energy efficiency is compared with the energy efficiency of the existing single-cooled air conditioner under the same working conditions, and the following data are obtained:
  • the single-cooling type air conditioner according to the embodiment of the present invention has a significant improvement in energy efficiency and annual energy efficiency APF compared with the existing single-cooling type compressor.
  • the inventors compared the single-cooling type air conditioner of the embodiment of the present invention with different rated cooling capacity and different exhaust volume ratios with the existing single-cooling type air conditioner under the same working condition, and found that the energy efficiency is improved, for example, the invention
  • the person has found through experiments that the single-cooling type air conditioner of the embodiment of the invention (sets the rated cooling capacity to 2.6 kw, and exhausts the second cylinder and the first cylinder) The volume ratio is set to 9.2%). Compared with the existing single-cooling type air conditioner under the same working conditions, the energy efficiency is improved by 7.3%.
  • a method of controlling an air conditioner according to an embodiment of the present invention in which the air conditioner is a cold and warm type air conditioner according to the above embodiment of the present invention, will be described in detail with reference to FIGS. 1 to 6, 13 and 14.
  • the opening of the first throttle element and the second throttle element are both adjustable.
  • the throttling element located upstream of the first throttling element and the second throttling element is a primary throttling element
  • the throttling element located downstream of the first throttling element and the second throttling element is two
  • the throttling element in other words, during cooling, the first throttling element is a primary throttling element and the second throttling element is a secondary throttling element.
  • the second throttle element is a primary throttling element and the first throttling element is a secondary throttling element.
  • the control method includes the following steps: first, adjusting the opening degree of the primary throttling element according to the detection result of the first detection object, and then adjusting the opening of the secondary throttling element according to the detection result of the second detection object.
  • the degree of opening of the first throttle element is smaller than the set opening degree of the secondary throttle element, and the detection result of the first detection object is different from the detection result of the second detection object.
  • the difference between the detection result of the first detection object and the detection result of the second detection object means that the primary throttle element and the secondary throttle element cannot simultaneously use the same state parameter for adjustment control, in other words, for The required relevant parameters for adjusting the primary throttling element are different from the relevant parameters required for adjusting the secondary throttling element.
  • the first detection object includes an outdoor ambient temperature, an operating frequency of the two-cylinder compressor, an exhaust temperature of the exhaust port, an exhaust pressure of the exhaust port, an intermediate pressure of the refrigerant discharged from the gas outlet, and a refrigerant discharged from the gas outlet. At least one of the intermediate temperatures.
  • the second detection object includes an outdoor ambient temperature, an operating frequency of the two-cylinder compressor, an exhaust temperature of the exhaust port, an exhaust pressure of the exhaust port, an intermediate pressure of the refrigerant discharged from the gas outlet, and a refrigerant discharged from the gas outlet. At least one of the intermediate temperatures.
  • the parameters required for controlling the primary throttle element and the secondary throttle element are collected and processed during the operation of the air conditioner, and then according to the obtained parameters.
  • the opening of the first-stage throttling element is first adjusted until the opening degree is set, and then the opening degree of the two-stage throttling element is adjusted until the opening degree is set, when the primary throttling element and the secondary throttling element are adjusted to When the opening degree is set, the opening degree of the primary throttling element is smaller than the opening degree of the secondary throttling element.
  • the first detection object and the second detection object may be re-detected after n seconds of operation, and then the first stage is adjusted according to the detection result.
  • the opening of the flow element and the secondary throttle element is repeated as such.
  • the repetition condition is not limited thereto.
  • the first detection object and the second detection object may be re-detected, and then the opening degrees of the primary throttle element and the secondary throttle element are adjusted according to the detection result. In other words, in the case of cooling or heating, the opening of the primary throttling element and the secondary throttling element are both satisfied.
  • the relevant parameters of the opening degree of the first throttle element and the second throttle element are re-detected and judged, and then the first throttle element is adjusted according to the determination result. And the opening of the second throttle element is repeated as such.
  • the energy efficiency of the system is optimized by first adjusting the opening degree of the primary throttling element and then adjusting the opening degree of the secondary throttling element.
  • a control method according to several embodiments of the present invention is described below, in which the opening degrees of the first throttle element and the second throttle element are both adjustable.
  • the first detection object and the second detection object are both the outdoor ambient temperature T4 and the operating frequency F
  • the primary throttling element and the secondary throttling are calculated according to the detected outdoor ambient temperature T4 and the operating frequency F.
  • the component is set to the opening degree, and then the opening degree of the corresponding primary throttling element and the secondary throttling element is adjusted according to the set opening degree.
  • calculation formula is pre-set in the electronic control component of the air conditioner, and the calculation formula can be specifically limited according to the actual situation.
  • LA_cool_2 a 2 ⁇ F+b 2 T 4 +c 2
  • LA_cool_2 a 2 ⁇ F+b 2 T 4 +c 2
  • the opening degree of the second throttling element is increased to the calculated opening degree; otherwise, the closing is small.
  • 0 ⁇ a 2 ⁇ 30,0 ⁇ b 2 ⁇ 30, -50 ⁇ c 2 ⁇ 150 a, b Both c and c can be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient has no influence on the opening of the throttle element.
  • LA_heat_1 x 1 ⁇ F+y 1 T 4 +z 1 , when the calculated opening degree LA_heat_1 When the actual opening degree of the collected second throttle element is greater than the calculated opening degree of the second throttle element;
  • LA_heat_2 x 2 ⁇ F+y 2 T 4 +z 2
  • the opening degree LA_heat_2 is larger than the collected
  • the opening of the first throttle element is increased to the calculated opening degree; otherwise, the opening is small.
  • 0 ⁇ x 2 ⁇ 25,0 ⁇ y 2 ⁇ 25, -50 ⁇ z 2 ⁇ 150 control coefficients x, y Both z and z can be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient
  • the outdoor ambient temperature is detected to be 35 ° C
  • the compressor operating frequency is 58 Hz
  • a 2 1.5
  • the compressor operating frequency and the T4 value are re-detected; or the compressor operating frequency and the T4 value are detected according to the adjustment of the air conditioner by the user, for the first throttling element and the second throttling
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the system calculates that the opening degree of the second throttle element should be 187, adjusts the opening degree of the second throttle element to 187; and then calculates the opening degree of the first throttle element to be 100. , adjust the opening of the first throttle element to 100.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the first detection object is the outdoor ambient temperature T4 and the operating frequency F.
  • the set opening degree of the primary throttle element is calculated according to the outdoor ambient temperature T4 and the operating frequency F, and then adjusted according to the set opening degree.
  • the second detection object is the outdoor ambient temperature T4, the operating frequency F and the exhaust pressure; or the second detection object is the outdoor ambient temperature T4, the operating frequency F and the exhaust temperature, first calculated according to the outdoor ambient temperature T4 and the operating frequency F.
  • the exhaust pressure is set or the exhaust temperature is set, and then the opening of the secondary throttle element is adjusted according to the actually detected exhaust pressure or exhaust temperature so that the detected exhaust pressure or exhaust temperature reaches the set exhaust Pressure or set the exhaust temperature.
  • the opening degree of the second throttle element is opened; Wherein 0 ⁇ a 1 ⁇ 20,0 ⁇ b 1 ⁇ 20, -50 ⁇ c 1 ⁇ 100,0 ⁇ a 2 ⁇ 30,0 ⁇ b 2 ⁇ 30, -50 ⁇ c 2 ⁇ 150,0 ⁇ a 3 ⁇ 30,0 ⁇ b 3 ⁇ 30, -50 ⁇ c 3 ⁇ 150.
  • the control coefficients a, b, and c can both be 0. When any one of the coefficients is zero
  • LA_heat_1 x 1 ⁇ F+y 1 T 4 +z 1
  • LA_heat_1 x 1 ⁇ F+y 1 T 4 +z 1
  • the opening degree of the second throttle element is increased to calculate the opening degree
  • the opening degree of the first throttling element is opened; otherwise, the opening is small.
  • control coefficients x, y, and z can both be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient has no influence on the opening of the throttle element.
  • the outdoor ambient temperature is detected to be 35 ° C
  • the compressor operating frequency is 58 Hz
  • the system calculates that the opening degree of the first throttling element should be 120, adjusts the opening degree of the first throttling element to 120, and then the system calculates according to the adopted frequency and the T4 value.
  • the second throttle element corresponds to an exhaust gas temperature TP_cool of 74 ° C or an exhaust pressure P row _cool of 2.54 MPa, at which time the second throttle element is adjusted according to the detected exhaust gas temperature TP or the exhaust pressure P row.
  • Degree when the detected exhaust gas temperature is greater than 74 ° C (or the detected exhaust pressure P row is greater than 2.54 MPa), gradually increase the opening of the second throttle element (can be adjusted 4 steps per adjustment).
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the system calculates that the opening degree of the second throttling element should be 187, adjusts the opening degree of the second throttling element to 187, and then the system calculates according to the adopted frequency and the T4 value.
  • the exhaust gas temperature TP_heat corresponding to the first throttle element is 68.8 ° C, and the exhaust pressure P row _heat is 2.44 MPa.
  • the opening degree of the first throttle element is adjusted according to the detected exhaust gas temperature TP or the exhaust pressure P, when the detected exhaust gas temperature is greater than 68.8 ° C (or the detected exhaust pressure P row is greater than 2.44 Mpa) , gradually increase the opening degree of the first throttle element (can be adjusted by 4 steps each time), and gradually reduce the opening degree of the first throttle element.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed. The component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • a plurality of outdoor temperature intervals are preset, each outdoor temperature interval corresponds to an opening degree of a different throttling element, and the first detection object is an outdoor ambient temperature T4, according to the actually detected outdoor ambient temperature T4.
  • the opening value corresponding to the outdoor temperature interval adjusts the opening degree of the primary throttling element;
  • the second detection object is the outdoor ambient temperature T4, the operating frequency F and the exhaust pressure; or the second detection object is the outdoor ambient temperature T4, the operating frequency F and the exhaust temperature, first calculated according to the outdoor ambient temperature T4 and the operating frequency F. Setting the exhaust pressure or setting the exhaust temperature, and then adjusting the opening degree of the secondary throttle element according to the actual detected exhaust pressure or exhaust temperature so that the exhaust pressure or the exhaust temperature is detected to reach the set exhaust pressure or Set the exhaust temperature.
  • the opening degree of the second throttle element is opened; Wherein 0 ⁇ a 1 ⁇ 20,0 ⁇ b 1 ⁇ 20, -50 ⁇ c 1 ⁇ 100,0 ⁇ a 2 ⁇ 30,0 ⁇ b 2 ⁇ 30, -50 ⁇ c 2 ⁇ 150.
  • the control coefficients a, b, and c can both be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient has no influence on the opening of the throttle element.
  • the opening degree of the first throttling element is opened; otherwise, the opening is small.
  • control coefficients x, y, and z can both be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient has no influence on the opening of the throttle element.
  • the system firstly calculates that the opening of the first throttling element should be 120, and adjusts the opening degree of the first throttling element to 120; then the system calculates the second throttling according to the frequency and the T4 value.
  • the exhaust gas temperature TP_cool corresponding to the component is 74 ° C or the exhaust pressure P row _cool is 2.54 MPa, at which time the opening degree of the second throttle element is adjusted according to the detected exhaust gas temperature TP or the exhaust pressure P, for example, when detecting When the exhaust gas temperature is greater than 74 ° C (or the detected exhaust pressure P row is greater than 2.54 MPa), the opening of the second throttle element is gradually increased (4 steps can be adjusted each time).
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the system determines that the opening of the second throttling element should be 180, and adjusts the opening degree of the second throttling element to 180; then the system calculates according to the adopted frequency and the T4 value.
  • the exhaust gas temperature TP_heat corresponding to the first throttle element is 68.8 ° C, and the exhaust pressure P row _heat is 3.7 MPa.
  • the opening degree of the first throttle element is adjusted according to the detected exhaust gas temperature TP or the exhaust pressure P, when the detected exhaust gas temperature is greater than 68.8 ° C (or the detected exhaust pressure P row is greater than 3.7 Mpa) , gradually increase the opening degree of the first throttle element (can be adjusted by 4 steps each time), and gradually reduce the opening degree of the first throttle element.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed. The component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the intermediate temperature or the intermediate pressure is preset
  • the first detection object is an intermediate pressure or an intermediate temperature
  • the opening degree of the primary throttle element is adjusted according to the actually detected intermediate pressure or intermediate temperature to make the detected intermediate
  • the pressure or intermediate temperature reaches a preset intermediate pressure or a preset intermediate temperature.
  • the second detection object is the outdoor ambient temperature T4, the operating frequency F and the exhaust pressure; or the second detection object is the outdoor ambient temperature T4, the operating frequency F and the exhaust temperature, first calculated according to the outdoor ambient temperature T4 and the operating frequency F.
  • the exhaust pressure is set or the exhaust temperature is set, and then the opening of the secondary throttle element is adjusted according to the actual detected exhaust pressure or exhaust temperature so that the detected exhaust pressure or exhaust temperature reaches the set exhaust pressure. Or set the exhaust temperature.
  • the preset intermediate temperature may range from 20 ° C to 35 ° C, and the preset intermediate pressure may range from 0.8 MPa to 2.0 MPa.
  • the opening degree of the first throttling element is opened, and vice versa.
  • the opening degree of the second throttle element is opened; Wherein 0 ⁇ a 1 ⁇ 20,0 ⁇ b 1 ⁇ 20, -50 ⁇ c 1 ⁇ 100,0 ⁇ a 2 ⁇ 30,0 ⁇ b 2 ⁇ 30, -50 ⁇ c 2 ⁇ 150.
  • the control coefficients a, b, and c can both be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient has no influence on the opening of the throttle element.
  • the preset intermediate temperature may range from 20 ° C to 30 ° C, and the preset intermediate pressure may range from 1.0 MPa to 2.5 MPa.
  • the opening degree of the second throttle element is opened, and vice versa.
  • the opening degree of the first throttling element is opened; otherwise, the opening is small.
  • control coefficients x, y, and z can both be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient has no influence on the opening of the throttle element.
  • the system adjusts the opening of the first throttle element based on the collected intermediate temperature or intermediate pressure value.
  • the opening of the first throttling element is gradually reduced (4 steps can be adjusted each time). On the contrary, adjust the opening degree.
  • the system calculates that the exhaust gas temperature TP_cool corresponding to the second throttle element is 74 ° C or the exhaust pressure P row _cool is 2.54 MPa, according to the detected exhaust gas temperature TP or exhaust pressure.
  • P adjusts the opening degree of the second throttle element, and when detecting that the exhaust gas temperature is greater than 74 ° C (or the detected pressure P row is greater than 2.54 MPa), gradually increase the opening degree of the second throttle element (can be pressed each time Adjust the 4-step action).
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the intermediate temperature is set to 26 ° C
  • the intermediate pressure is 1.6 MPa
  • the outdoor ambient temperature is detected to be 7 ° C
  • the compressor operating frequency is 72 Hz
  • the system adjusts the opening of the second throttle element according to the collected intermediate temperature or intermediate pressure value.
  • the collected intermediate temperature is greater than 26 ° C or the collected intermediate pressure is greater than 1.6 MPa
  • the opening of the second throttle element is gradually increased (4 steps can be adjusted each time). On the contrary, adjust the opening degree.
  • the system calculates that the exhaust gas temperature TP_heat corresponding to the first throttle element is 68.8 ° C, and the exhaust pressure P row _heat is 3.7 MPa.
  • the opening degree of the first throttle element is adjusted according to the detected exhaust gas temperature TP or the exhaust pressure P, when the detected exhaust gas temperature is greater than 68.8 ° C (or the detected exhaust pressure P row is greater than 3.7 Mpa) , gradually increase the opening degree of the first throttle element (can be adjusted by 4 steps each time), and gradually reduce the opening degree of the first throttle element.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the intermediate temperature or the intermediate pressure is preset
  • the first detection object is an intermediate pressure or an intermediate temperature
  • the opening degree of the primary throttle element is adjusted according to the actually detected intermediate pressure or intermediate temperature to make the detected intermediate Pressure
  • the force or intermediate temperature reaches a preset intermediate pressure or a preset intermediate temperature
  • the second detection object is an outdoor ambient temperature T4 and an operating frequency F.
  • the set opening degree of the secondary throttle element is calculated according to the outdoor ambient temperature T4 and the operating frequency F, and then the secondary throttle element is adjusted according to the set opening degree. Opening degree.
  • the preset intermediate temperature range during cooling may be 20° C.-35° C.
  • the preset intermediate pressure may range from 0.8 MPa to 1.5 MPa.
  • LA_cool_2 a 2 ⁇ F+b 2 T 4 +c 2
  • LA_cool_2 a 2 ⁇ F+b 2 T 4 +c 2
  • control coefficients a, b, c may be 0, when any one zero coefficient, this coefficient corresponding to demonstrate The parameters have no effect on the opening of the throttle element.
  • the preset intermediate temperature may range from 20 ° C to 30 ° C, and the preset intermediate pressure may range from 1.0 MPa to 2.5 MPa.
  • the opening degree of the second throttle element is opened, and vice versa.
  • the opening degree of the first throttle element is increased to the calculated opening degree; otherwise, the opening is small.
  • the control coefficients x, y, z can both be 0, and when any one of the coefficients is zero, the corresponding coefficient is proved
  • the parameters have no effect on the opening of the throttle element.
  • the system adjusts the opening of the first throttle element based on the collected intermediate temperature or intermediate pressure value.
  • the opening of the first throttling element is gradually reduced (4 steps can be adjusted each time).
  • the system calculates the set opening degree of the second throttle element to 160 according to the detected outdoor ambient temperature and the compressor running frequency, and then adjusts the opening degree of the second throttle element to 160.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the system adjusts the opening of the second throttle element according to the collected intermediate temperature or intermediate pressure value.
  • the opening of the second throttle element is gradually increased (4 steps can be adjusted each time).
  • the opening degree of the first throttle element is calculated to be 100, and the opening degree of the first throttle element is adjusted to 100.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • a plurality of outdoor temperature intervals are preset, each outdoor temperature interval corresponds to an opening degree of a different throttling element, and the first detection object is an outdoor ambient temperature T4, according to the actually detected outdoor ambient temperature T4.
  • the opening value corresponding to the outdoor temperature interval adjusts the opening degree of the primary throttle element.
  • the second detection object is an outdoor ambient temperature T4 and an operating frequency F.
  • the set opening degree of the secondary throttle element is calculated according to the outdoor ambient temperature T4 and the operating frequency F, and then the secondary throttle element is adjusted according to the set opening degree. Opening degree.
  • LA_cool_2 a 2 ⁇ F+b 2 T 4 +c 2
  • LA_cool_2 a 2 ⁇ F+b 2 T 4 +c 2
  • control coefficients a, b, c may be 0, when any one zero coefficient, this coefficient corresponding to demonstrate The parameters have no effect on the opening of the throttle element.
  • the opening of the first throttle element is increased to the calculated opening degree; otherwise, the opening is small.
  • the control coefficients x, y, z can both be 0, and when any one of the coefficients is zero, the corresponding coefficient is proved
  • the parameters have no effect on the opening of the throttle element.
  • the outdoor ambient temperature is detected to be 35 ° C
  • the compressor operating frequency is 58 Hz
  • a 2 1.5
  • b 2 1.6
  • c 2 17.
  • the system firstly calculates that the opening degree of the first throttle element should be 120, and adjusts the opening degree of the first throttle element to 120.
  • the system calculates the set opening degree of the second throttle element to 160 according to the detected outdoor ambient temperature and the compressor running frequency, and then adjusts the opening degree of the second throttle element to 160.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed.
  • the component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • the outdoor ambient temperature was detected to be 7 ° C
  • the compressor operating frequency was 72 Hz
  • z 2 7.0 were set.
  • the system should obtain that the opening degree of the second throttle element should be 180, and adjust the opening degree of the second throttle element to 180; then calculate the opening degree of the first throttle element as 100. Adjust the opening of the first throttle element to 100.
  • the compressor operating frequency and the T4 value are re-detected, or the compressor operating frequency and the T4 value are detected according to the user's adjustment of the air conditioner, and the first throttling element and the second throttling are performed. The component is re-adjusted.
  • the energy efficiency of the air conditioner is 6.5% higher than that of the air conditioner of the same specification on the market.
  • control method of the embodiment of the present invention is not limited to the above six types, for example, the first-stage throttling element and the two-stage throttling element in the six examples.
  • the adjustment mode of the opening degree is randomly combined; or the operating frequency of the compressor in the above embodiment may also be obtained from the actually detected outdoor environmental temperature, for example, a preset plurality of outdoor environmental temperature intervals, and a plurality of outdoor environmental temperature intervals corresponding to Different compressor operating frequencies.
  • the air conditioner is a cold and warm type air conditioner according to the above embodiment of the present invention.
  • the opening of the first throttling element is fixed, and the opening of the second throttling element is adjustable.
  • a method of controlling an air conditioner includes the step of adjusting an opening degree of a second throttle element to a set opening degree according to a detection result of the first detection object during a cooling operation.
  • the opening degree of the second throttle element is adjusted to the set opening degree according to the detection result of the second detection object. That is to say, during cooling and heating, the parameters required to control the second throttle element are collected and processed, and then the opening degree of the second throttle element is controlled according to the obtained parameters until the condition is satisfied.
  • the first detection object includes an outdoor ambient temperature, an operating frequency of the two-cylinder compressor, an exhaust temperature of the exhaust port, an exhaust pressure of the exhaust port, an intermediate pressure of the refrigerant discharged from the gas outlet, and a refrigerant discharged from the gas outlet. At least one of an intermediate temperature, a gas-liquid separator temperature, and a gas-liquid separator pressure.
  • the second detection object includes an outdoor ambient temperature, an operating frequency of the two-cylinder compressor, an exhaust pressure of the exhaust port, an exhaust temperature of the exhaust port, an intermediate pressure of the refrigerant discharged from the gas outlet, and a refrigerant discharged from the gas outlet. At least one of an intermediate temperature, a gas-liquid separator temperature, and a gas-liquid separator pressure. It can be understood that the first detection object and the second detection object may be the same or different. It should be noted that the intermediate pressure and the intermediate temperature can be obtained by detecting the refrigerant in the line connecting the gas outlet and the second accumulator.
  • the first detection object or the second detection object may be re-detected after n seconds of operation, and then the opening degree of the second throttle element is adjusted according to the detection result, and thus repeated.
  • the repetition condition is not limited thereto.
  • the first detection object or the second detection object may be re-detected, and then the opening degree of the second throttle element is adjusted according to the detection result.
  • the relevant parameter of the opening degree of the second throttle element can be re-run after n seconds of operation or after receiving the operation signal of the user. The judgment is detected, and then the opening degree of the second throttle element is adjusted according to the determination result, and thus repeated.
  • the opening degree of the second throttle element can be well controlled to reach the preset opening degree, thereby achieving the best energy saving effect.
  • the control method according to the embodiment of the present invention is described in detail below by taking six specific embodiments as an example.
  • the opening of the first throttling element is fixed, and the opening degree of the second throttling element is adjustable.
  • the first detection object and/or the second detection object are the outdoor ambient temperature T4 and the exhaust gas temperature
  • the operating frequency F is first obtained according to the detected outdoor ambient temperature T4, and according to the detected outdoor ambient temperature T4.
  • the set exhaust temperature is calculated with the operating frequency F, and then the opening of the second throttle element is adjusted such that the detected exhaust temperature reaches the set exhaust temperature.
  • the calculation formula is pre-set in the electronic control component of the air conditioner, and the calculation formula can be specifically limited according to the actual situation.
  • the first detection object is the outdoor ambient temperature T4 and the exhaust temperature
  • detecting the outdoor environment when the cooling is turned on Temperature T4 determine the operating frequency F of the compressor according to T4
  • the range of values of a1, b1, c1 can be outdoor
  • the ambient temperature T4 corresponds, for example, when 20 ° C ⁇ T4: a1 takes -10-10; b1 takes -100--100; c1 takes -10-10; when 20 °C ⁇ T4 ⁇ 30 °C: a1 takes -8 --8; b1 takes -80--80; c1 takes -8-8; when 30 °C ⁇ T4 ⁇ 40 °C: a1 takes -9--9; b1 takes -90--90; c1 takes -6- 6; When 40 ° C ⁇ T4 ⁇ 50 ° C: a1
  • the operating opening of the second throttle element is then adjusted according to TP.
  • the second throttle element is adjusted to be in position and stable operation. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the opening degree of the second throttle element is adjusted according to the relevant change.
  • the T4 temperature is detected to be 35 ° C.
  • the corresponding compressor operating frequency under the T4 should be 90 HZ, and the exhaust temperature coefficient a1 of the corresponding temperature interval is 0.6, b1 is 20, and c1 is 0.2.
  • the second throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the second detection object is the outdoor ambient temperature T4 and the exhaust temperature
  • the outdoor ambient temperature T4 is detected during the heating startup
  • the operating frequency F of the compressor is determined according to T4
  • the operating opening of the second throttle element is then adjusted according to TP.
  • the second throttle element is adjusted to be in position and stable operation. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the second throttle element opening degree is adjusted according to the relevant change.
  • the T4 temperature is detected to be 7 ° C.
  • the corresponding compressor operating frequency under the T4 should be 75 HZ, and the exhaust temperature coefficient a2 of the corresponding temperature range is 0.4, b2 is 10, and c2 is 5.
  • the second throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • the first detection object and/or the second detection object are the outdoor ambient temperature T4 and the exhaust pressure
  • the operating frequency F is first obtained according to the detected outdoor ambient temperature T4, and according to the detected outdoor ambient temperature T4.
  • the set exhaust pressure is calculated with the operating frequency F, and then the opening of the second throttle element is adjusted such that the detected exhaust pressure reaches the set exhaust pressure.
  • the outdoor ambient temperature T4 is detected when the cooling is turned on, the operating frequency F of the compressor is determined according to T4, and the exhaust pressure Pp is determined according to T4 and F;
  • Pp a3*F+b3+c3*T4;
  • the range of values of a3, b3, and c3 may correspond to the outdoor ambient temperature T4, for example, when 20 ° C ⁇ T4: a3 takes -5 - 5; b3 takes -8 --8; c3 takes -1 -1; when 20 ° C ⁇ T4 ⁇ 30 ° C: a3 takes -5 - 5; b3 takes -10--10; c3 takes -2 - 2; when 30 ° C ⁇ T4 ⁇ 40 °C: a3 take -5--5; b3 take -12--12; c3 take -3-3; when 40 °C ⁇ T4 ⁇ 50 °C: a3 take
  • the operating opening of the second throttle element is then adjusted according to Pp.
  • the second throttle element is adjusted to be in position and stable operation. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the second throttle element opening degree is adjusted according to the relevant change.
  • the startup cooling operation detects that the T4 temperature is 35 °C, and the corresponding compressor operating frequency under the T4 should be 80HZ, and the exhaust pressure coefficient a3 of the corresponding temperature interval is 0.02, b3 is 0.7, and c3 is 0.02, and the exhaust is calculated.
  • the exhaust pressure reaches the set exhaust pressure.
  • the second throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the operating opening of the second throttle element is then adjusted according to Pp.
  • the second throttle element is adjusted to be in position and stable operation. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the second throttle element opening degree is adjusted according to the relevant change.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • the first detection object and/or the second detection object is the outdoor ambient temperature T4, and the operating frequency F is first obtained according to the detected outdoor ambient temperature T4, and according to the detected outdoor ambient temperature T4 and the operating frequency F.
  • the set opening degree of the second throttle element is calculated, and then the opening degree of the second throttle element is adjusted to the set opening degree.
  • the first detection object is the outdoor ambient temperature T4
  • the outdoor ambient temperature T4 is detected at the start of cooling
  • the compressor operating frequency F is determined according to T4
  • the set opening degree Lr of the second throttle element is determined according to T4 and F
  • the range of values of c5, and then the values of a5, b5, and c5 can be limited according to actual conditions.
  • the second throttle element is adjusted to be in position and stable operation. Retest room after n seconds Whether the external temperature T4 changes or whether the user has an operation, and then adjusts the opening of the second throttle element according to the relevant change.
  • the second detection object is the outdoor ambient temperature T4
  • the outdoor ambient temperature T4 is detected at the start of heating
  • the compressor operating frequency F is determined according to T4
  • the set opening degree Lr of the second throttle element is determined according to T4 and F
  • the opening degree Lr a6*F+b6+c6*T4; wherein the range of values of a6, b6, and c6 may correspond to the outdoor ambient temperature T4, for example, when -15 ° C ⁇ T4: a6 takes -20--20; B6 takes -200--200; c6 takes -10-10; when -15 °C ⁇ T4 ⁇ -5 °C: a6 takes -18--18; b6 takes -180--180; c6 takes -9-9; When -5 ° C ⁇ T4 ⁇ 5 ° C: a6 take -15--15; b6 take -150--150; c6 take -8-8.
  • the second throttle element Comparing the difference between the set opening degree Lr of the second throttle element and the initial opening degree of the second throttle element, if it is consistent, there is no adjustment, and if it is inconsistent, it is adjusted to the set opening degree Lr.
  • the second throttle element is adjusted to be in position and stable operation. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the second throttle element opening degree is adjusted according to the relevant change.
  • the corresponding compressor operating frequency should be 90HZ
  • the expansion valve opening coefficient a6 of the corresponding temperature range is 1.2
  • b6 is 80
  • c6 is 3.
  • the second throttle element runs stably after reaching the set opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • a plurality of outdoor temperature intervals are preset, each outdoor temperature interval corresponds to a temperature of a different gas-liquid separator, and the first detection object and/or the second detection object is an outdoor ambient temperature T4 and a gas-liquid separator.
  • the temperature firstly obtains the set temperature of the gas-liquid separator corresponding to the outdoor temperature range according to the actually detected outdoor ambient temperature T4, and then adjusts the opening degree of the second throttle element until the actually detected temperature of the gas-liquid separator Meet the set temperature.
  • the outdoor ambient temperature T4 and the temperature Ts of the gas-liquid separator are detected during the cooling start-up operation, and the corresponding outdoor is inquired according to the detected outdoor ambient temperature T4.
  • the set temperature of the gas-liquid separator corresponding to the temperature interval for example, the corresponding relationship between the outdoor temperature interval and the set temperature of the gas-liquid separator can be as follows: when 20 ° C ⁇ T4: Ts takes 0-30; when 0 ° C ⁇ T4 ⁇ 30°C: Ts takes 0-40; when 30°C ⁇ T4 ⁇ 40°C: Ts takes 0-50; when 40°C ⁇ T4 ⁇ 50°C: Ts takes 0-60; when 50°C ⁇ T4: Ts takes 0-65. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the opening of the second throttle element is then adjusted such that the detected temperature Ts of the gas-liquid separator satisfies the set temperature.
  • the startup cooling operation detects that the T4 temperature is 35 ° C.
  • the temperature Ts of the corresponding gas-liquid separator under the T4 interval should be 26 ° C.
  • the temperature Ts of the gas-liquid separator is detected to be 20 ° C under the initial opening degree.
  • the second throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the outdoor ambient temperature T4 and the temperature Ts of the gas-liquid separator are detected during the heating start operation, and the corresponding outdoor temperature interval is inquired according to the detected outdoor ambient temperature T4.
  • the corresponding set temperature of the gas-liquid separator for example, the outdoor temperature interval and the set temperature of the gas-liquid separator can be as follows: when -15 ° C ⁇ T4: Ts takes -50 - 30; when -15 ° C ⁇ When T4 ⁇ -5°C: Ts is -45-40; when -5°C ⁇ T4 ⁇ 5°C: Ts is -40-50; when 5°C ⁇ T4 ⁇ 15°C: Ts is -35-60; When 15 ° C ⁇ T4: Ts takes -30-65. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the opening of the second throttle element is then adjusted such that the detected temperature Ts of the gas-liquid separator satisfies the set temperature.
  • the temperature of the T4 is 6 °C
  • the temperature Ts of the corresponding gas-liquid separator should be 20 °C under the T4 interval, and the Ts detected under the initial opening has reached 25 °C.
  • the second throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the first detection object and/or the second detection object are the outdoor ambient temperature T4 and the intermediate pressure; firstly, the operating frequency F is obtained according to the detected outdoor ambient temperature T4, and according to the detected outdoor ambient temperature T4 and The operating frequency F is calculated to obtain a set intermediate pressure, and then the opening of the second throttle element is adjusted such that the detected intermediate pressure reaches the set intermediate pressure.
  • the temperature T4 corresponds to, for example, preset different outdoor ambient temperature intervals corresponding to different values of a7, b7, and c7, and then the values of a7, b7, and c7 can be limited according to actual conditions. It can be understood that the values of a7, b7, and c7 during cooling and the values of a7, b7, and c7 during heating may be the same or different.
  • the temperature of T4 is detected to be 7 °C, and the corresponding operating frequency of the compressor under T4 should be 75HZ, corresponding to The pressure coefficient a7 of the temperature interval is 0.01, b7 is 0.6, and c7 is 0.1.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • a plurality of outdoor temperature intervals are preset, each outdoor temperature interval corresponds to a different gas-liquid separator pressure, and the first detection object and/or the second detection object is an outdoor ambient temperature T4 and a gas-liquid separator.
  • the pressure firstly obtains the set pressure of the gas-liquid separator corresponding to the outdoor temperature range according to the actually detected outdoor ambient temperature T4, and then adjusts the opening degree of the second throttle element until the actually detected pressure of the gas-liquid separator Meet the set pressure.
  • the outdoor ambient temperature T4 and the pressure of the gas-liquid separator are detected during the cooling start-up operation, and the corresponding outdoor is inquired according to the detected outdoor ambient temperature T4.
  • the set pressure of the gas-liquid separator corresponding to the temperature interval for example, the corresponding relationship between the outdoor temperature interval and the set pressure of the gas-liquid separator can be as follows: when 20 ° C ⁇ T4: Ps takes 0.1-8; when 20 ° C ⁇ T4 When ⁇ 30°C: Ps is 0.1-10; when 30°C ⁇ T4 ⁇ 40°C: Ps is 0.1-15; when 40°C ⁇ T4 ⁇ 50°C: Ps is 0.1-20; when 50°C ⁇ T4: Ps takes 0.1-25. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the opening degree of the second throttle element is adjusted so that the detected pressure Ps of the gas-liquid separator satisfies the set pressure.
  • the startup cooling operation detects that the T4 temperature is 50 °C.
  • the second throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the outdoor ambient temperature T4 and the pressure of the gas-liquid separator are detected during the heating start operation, and the corresponding outdoor temperature interval is inquired according to the detected outdoor ambient temperature T4.
  • the set pressure of the corresponding gas-liquid separator for example, the corresponding relationship between the outdoor temperature range and the set pressure of the gas-liquid separator
  • the system can be as follows: when -15 ° C ⁇ T4: Ps take 0.1-10; when -15 ° C ⁇ T4 ⁇ -5 ° C: Ps take 0.1-12; when -5 ° C ⁇ T4 ⁇ 5 ° C: Ps take 0.1 —15; When 5 ° C ⁇ T4 ⁇ 15 ° C: Ps take 0.1-20; when 15 ° C ⁇ T4: Ps take 0.1-25. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the set pressure Ps of the corresponding gas-liquid separator should be 1.2 MPa.
  • the second throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • control method of the embodiment of the present invention is not limited to the above six types, for example, the opening degree of the second throttle element during cooling in the above six examples may be used.
  • the adjustment mode and the adjustment method of the opening degree of the second throttle element during heating are randomly combined.
  • the set parameters such as the set exhaust pressure, the set exhaust temperature, the set opening degree, and the set intermediate pressure calculated in the above embodiment may also be obtained by other methods, for example, may be set.
  • Different outdoor temperature intervals, multiple outdoor temperature intervals correspond to unused setting parameters, and corresponding setting parameters can be obtained according to the outdoor temperature range in which the actually detected outdoor ambient temperature is located. It can also be understood that the above parameters obtained through the outdoor ambient temperature review can also be obtained by a preset calculation formula.
  • a method of controlling an air conditioner according to an embodiment of the present invention, wherein the air conditioner is a cold and warm type air conditioner according to the above embodiment of the present invention, a first throttle element opening degree, will be described in detail below with reference to FIGS. 1 to 6, 17 and 18.
  • Adjustable, the second throttle element has a fixed opening.
  • a method of controlling an air conditioner includes the step of adjusting an opening degree of the first throttle element to a set opening degree according to a detection result of the first detection object during a cooling operation.
  • the opening degree of the first throttle element is adjusted to the set opening degree according to the detection result of the second detection object. That is to say, in the cooling and heating, the parameters required for controlling the first throttle element are collected and processed, and then the opening degree of the first throttle element is controlled according to the obtained parameters until the condition is satisfied.
  • the first detection object includes an outdoor ambient temperature, an operating frequency exhaust temperature of the two-cylinder compressor, an exhaust pressure of the exhaust port, an intermediate pressure of the refrigerant discharged from the gas outlet, an intermediate temperature of the refrigerant discharged from the gas outlet, and a gas. At least one of a liquid separator temperature and a gas-liquid separator pressure.
  • the second detection object includes an outdoor ambient temperature, an operating frequency of the two-cylinder compressor, an exhaust pressure of the exhaust port, an exhaust temperature of the exhaust port, an intermediate pressure of the refrigerant discharged from the gas outlet, and a refrigerant discharged from the gas outlet. At least one of an intermediate temperature, a gas-liquid separator temperature, and a gas-liquid separator pressure. It can be understood that the first detection object and the second detection object may be the same or different. It should be noted that the intermediate pressure and the intermediate temperature can be detected by the connection. The gas outlet and the refrigerant in the pipeline of the second accumulator are derived.
  • the first detection object or the second detection object may be re-detected after n seconds of operation, and then the opening degree of the first throttle element is adjusted according to the detection result, and thus repeated.
  • the repetition condition is not limited thereto.
  • the first detection object or the second detection object may be re-detected, and then the opening degree of the first throttle element is adjusted according to the detection result.
  • the relevant parameter of the opening degree of the first throttle element can be re-run after n seconds of operation or after receiving the operation signal of the user. The judgment is detected, and then the opening degree of the first throttle element is adjusted according to the determination result, and thus repeated.
  • the opening degree of the first throttle element can be well controlled to reach the preset opening degree, thereby achieving the best energy saving effect.
  • the control method according to the embodiment of the present invention is described in detail below by taking six specific embodiments as an example.
  • the opening degree of the first throttling element is adjustable, and the opening degree of the second throttling element is fixed.
  • the first detection object and/or the second detection object are the outdoor ambient temperature T4 and the exhaust gas temperature
  • the operating frequency F is first obtained according to the detected outdoor ambient temperature T4, and according to the detected outdoor ambient temperature T4.
  • the set exhaust temperature is calculated with the operating frequency F, and then the opening of the first throttle element is adjusted such that the detected exhaust temperature reaches the set exhaust temperature.
  • the calculation formula is pre-set in the electronic control component of the air conditioner, and the calculation formula can be specifically limited according to the actual situation.
  • the range of values of a1, b1, and c1 may correspond to the outdoor ambient temperature T4, for example, when 20°C ⁇ T4: a1 takes -10-10; b1 takes -100 -100; c1 takes -10-10; when 20 °C ⁇ T4 ⁇ 30 °C: a1 takes -8--8; b1 takes -80--80; c1 takes -8-8; when 30 °C ⁇ T4 ⁇ At 40 ° C: a1 take -9--9; b1 take -90--90; c1 take -6-6; when 40 ° C ⁇ T4 ⁇ 50 ° C: a1 take -8--8
  • the operating opening of the first throttle element is then adjusted according to TP.
  • the first throttling element is in stable operation after being adjusted in place. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the opening degree of the first throttle element is adjusted according to the relevant change.
  • the T4 temperature is detected to be 35 ° C, and the corresponding compressor operating frequency under the T4 should be 90HZ, the exhaust temperature coefficient a1 corresponding to the temperature range is 0.6, b1 is 20, and c1 is 0.2.
  • the flow element opening degree that is, the detected exhaust gas temperature reaches the set exhaust gas temperature.
  • the first throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the second detection object is the outdoor ambient temperature T4 and the exhaust temperature
  • the outdoor ambient temperature T4 is detected during the heating startup
  • the operating frequency F of the compressor is determined according to T4
  • the operating opening of the first throttle element is then adjusted according to TP.
  • the first throttling element is in stable operation after being adjusted in place. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the first throttle element opening degree is adjusted according to the relevant change.
  • the T4 temperature is detected to be 7 ° C.
  • the corresponding compressor operating frequency under the T4 should be 75 HZ, and the exhaust temperature coefficient a2 of the corresponding temperature range is 0.4, b2 is 10, and c2 is 5.
  • the first throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • the first detection object and/or the second detection object are the outdoor ambient temperature T4 and the exhaust pressure
  • the first First the operating frequency F is obtained according to the detected outdoor ambient temperature T4
  • the set exhaust pressure is calculated according to the detected outdoor ambient temperature T4 and the operating frequency F
  • the opening of the first throttle element is adjusted to make the detected The exhaust pressure reaches the set exhaust pressure.
  • the outdoor ambient temperature T4 is detected when the cooling is turned on, the operating frequency F of the compressor is determined according to T4, and the exhaust pressure Pp is determined according to T4 and F;
  • Pp a3*F+b3+c3*T4;
  • the range of values of a3, b3, and c3 may correspond to the outdoor ambient temperature T4, for example, when 20 ° C ⁇ T4: a3 takes -5 - 5; b3 takes -8 --8; c3 takes -1 -1; when 20 ° C ⁇ T4 ⁇ 30 ° C: a3 takes -5 - 5; b3 takes -10--10; c3 takes -2 - 2; when 30 ° C ⁇ T4 ⁇ 40 °C: a3 take -5--5; b3 take -12--12; c3 take -3-3; when 40 °C ⁇ T4 ⁇ 50 °C: a3 take
  • the operating opening of the first throttle element is then adjusted according to Pp.
  • the first throttling element is in stable operation after being adjusted in place. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the first throttle element opening degree is adjusted according to the relevant change.
  • the startup cooling operation detects that the T4 temperature is 35 °C, and the corresponding compressor operating frequency under the T4 should be 80HZ, and the exhaust pressure coefficient a3 of the corresponding temperature interval is 0.02, b3 is 0.7, and c3 is 0.02, and the exhaust is calculated.
  • the operating opening of the first throttle element is then adjusted according to Pp.
  • the first throttling element is in stable operation after being adjusted in place. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the first throttle element opening degree is adjusted according to the relevant change.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • the first detection object and/or the second detection object is the outdoor ambient temperature T4, and the operating frequency F is first obtained according to the detected outdoor ambient temperature T4, and according to the detected outdoor ambient temperature T4 and the operating frequency F.
  • the set opening degree of the first throttle element is calculated, and then the opening degree of the first throttle element is adjusted to the set opening degree.
  • the first detection object is the outdoor ambient temperature T4
  • the outdoor ambient temperature T4 is detected at the start of cooling
  • the compressor operating frequency F is determined according to T4
  • the set opening degree Lr of the first throttle element is determined according to T4 and F
  • the range of values of c5, and then the values of a5, b5, and c5 can be limited according to actual conditions.
  • the first throttling element is in stable operation after being adjusted in place. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the first throttle element opening degree is adjusted according to the relevant change.
  • the second detection object is the outdoor ambient temperature T4
  • the outdoor ambient temperature T4 is detected at the start of heating
  • the compressor operating frequency F is determined according to T4
  • the set opening degree Lr of the first throttle element is determined according to T4 and F
  • the opening degree Lr a6*F+b6+c6*T4; wherein the range of values of a6, b6, and c6 may correspond to the outdoor ambient temperature T4, for example, when -15 ° C ⁇ T4: a6 takes -20--20; B6 takes -200--200; c6 takes -10-10; when -15 °C ⁇ T4 ⁇ -5 °C: a6 takes -18--18; b6 takes -180--180; c6 takes -9-9; When -5 °C ⁇ T4 ⁇ 5 ° C: a6 take -15--15; b6 take -150--150; c6 take -8-8.
  • the first throttling element is in stable operation after being adjusted in place. After n seconds, it is re-detected whether there is a change in the outdoor temperature T4 or whether the user has an operation, and then the first throttle element opening degree is adjusted according to the relevant change.
  • the corresponding compressor operating frequency should be 90HZ
  • the expansion valve opening coefficient a6 of the corresponding temperature range is 1.2
  • b6 is 80
  • c6 is 3.
  • the first throttling element reaches stable operation after reaching the set opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • a plurality of outdoor temperature intervals are preset, each outdoor temperature interval corresponds to a temperature of a different gas-liquid separator, and the first detection object and/or the second detection object is an outdoor ambient temperature T4 and a gas-liquid separator.
  • the temperature firstly obtains the set temperature of the gas-liquid separator corresponding to the outdoor temperature range according to the actually detected outdoor ambient temperature T4, and then adjusts the opening degree of the first throttle element until the actually detected temperature of the gas-liquid separator Meet the set temperature.
  • the outdoor ambient temperature T4 and the temperature Ts of the gas-liquid separator are detected during the cooling start-up operation, and the corresponding outdoor is inquired according to the detected outdoor ambient temperature T4.
  • the set temperature of the gas-liquid separator corresponding to the temperature interval for example, the corresponding relationship between the outdoor temperature interval and the set temperature of the gas-liquid separator can be as follows: when 20 ° C ⁇ T4: Ts takes 0-30; when 0 ° C ⁇ T4 ⁇ 30°C: Ts takes 0-40; when 30°C ⁇ T4 ⁇ 40°C: Ts takes 0-50; when 40°C ⁇ T4 ⁇ 50°C: Ts takes 0-60; when 50°C ⁇ T4: Ts Take 0-65. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the opening degree of the first throttle element is adjusted such that the detected temperature Ts of the gas-liquid separator satisfies the set temperature.
  • the startup cooling operation detects that the T4 temperature is 35 ° C.
  • the temperature Ts of the corresponding gas-liquid separator under the T4 interval should be 26 ° C.
  • the temperature is turned on.
  • the first throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the outdoor ambient temperature T4 and the temperature Ts of the gas-liquid separator are detected during the heating start operation, and the corresponding outdoor temperature interval is inquired according to the detected outdoor ambient temperature T4.
  • the corresponding set temperature of the gas-liquid separator for example, the outdoor temperature interval and the set temperature of the gas-liquid separator can be as follows: when -15 ° C ⁇ T4: Ts takes -50 - 30; when -15 ° C ⁇ When T4 ⁇ -5°C: Ts is -45-40; when -5°C ⁇ T4 ⁇ 5°C: Ts is -40-50; when 5°C ⁇ T4 ⁇ 15°C: Ts is -35-60; When 15 ° C ⁇ T4: Ts takes -30-65. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the opening degree of the first throttle element is adjusted such that the detected temperature Ts of the gas-liquid separator satisfies the set temperature.
  • the temperature of the T4 is 6 °C
  • the temperature Ts of the corresponding gas-liquid separator should be 20 °C under the T4 interval, and the Ts detected at the initial opening has reached 25 °C.
  • the first throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the first detection object and/or the second detection object are the outdoor ambient temperature T4 and the intermediate pressure; firstly, the operating frequency F is obtained according to the detected outdoor ambient temperature T4, and according to the detected outdoor ambient temperature T4 and The operating frequency F is calculated to obtain a set intermediate pressure, and then the opening of the first throttle element is adjusted such that the detected intermediate pressure reaches the set intermediate pressure.
  • the temperature T4 corresponds to, for example, preset different outdoor ambient temperature intervals corresponding to different values of a7, b7, and c7, and then the values of a7, b7, and c7 can be limited according to actual conditions. It can be understood that the values of a7, b7, and c7 during cooling and the values of a7, b7, and c7 during heating may be the same or different.
  • the temperature of T4 is detected to be 7 °C.
  • the corresponding operating frequency of the compressor under T4 should be 75HZ.
  • the pressure coefficient a7 of the corresponding temperature interval is 0.01, b7 is 0.6, and c7 is 0.1. Calculate the set intermediate pressure.
  • the operating frequency of the compressor is determined by the outdoor ambient temperature, for example, a predetermined plurality of outdoor ambient temperature intervals, and the plurality of outdoor ambient temperature intervals respectively correspond to the plurality of compressor operating frequencies, and the detected outdoor ambient temperature is queried. In the outdoor ambient temperature range, the corresponding compressor operating frequency can be obtained. It will of course be understood that the operating frequency of the compressor can also be detected by means of a detection device provided on the compressor.
  • a plurality of outdoor temperature intervals are preset, each outdoor temperature interval corresponds to a different gas-liquid separator pressure, and the first detection object and/or the second detection object is an outdoor ambient temperature T4 and a gas-liquid separator.
  • the pressure firstly obtains the set pressure of the gas-liquid separator corresponding to the outdoor temperature range according to the actually detected outdoor ambient temperature T4, and then adjusts the opening degree of the first throttle element until the actually detected pressure of the gas-liquid separator Meet the set pressure.
  • the outdoor ambient temperature T4 and the pressure of the gas-liquid separator are detected during the cooling start-up operation, and the corresponding outdoor is inquired according to the detected outdoor ambient temperature T4.
  • the set pressure of the gas-liquid separator corresponding to the temperature interval for example, the corresponding relationship between the outdoor temperature interval and the set pressure of the gas-liquid separator can be as follows: when 20 ° C ⁇ T4: Ps takes 0.1-8; when 20 ° C ⁇ T4 When ⁇ 30°C: Ps is 0.1-10; when 30°C ⁇ T4 ⁇ 40°C: Ps is 0.1-15; when 40°C ⁇ T4 ⁇ 50°C: Ps is 0.1-20; when 50°C ⁇ T4: Ps takes 0.1-25. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the opening degree of the first throttle element is adjusted so that the detected pressure Ps of the gas-liquid separator satisfies the set pressure.
  • the startup cooling operation detects that the T4 temperature is 50 °C.
  • the first throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • the outdoor ambient temperature T4 and the pressure of the gas-liquid separator are detected during the heating start operation, and the corresponding outdoor temperature interval is inquired according to the detected outdoor ambient temperature T4.
  • the corresponding set pressure of the gas-liquid separator for example, the corresponding relationship between the outdoor temperature interval and the set pressure of the gas-liquid separator can be as follows: when -15 ° C ⁇ T4: Ps takes 0.1-10; when -15 ° C ⁇ T4 ⁇ -5°C: Ps is 0.1-12; when -5°C ⁇ T4 ⁇ 5°C: Ps is 0.1-15; when 5°C ⁇ T4 ⁇ 15°C: Ps is 0.1-20; when 15°C ⁇ T4 Time: Ps takes 0.1-25. It is to be understood that the above numerical values are only illustrative and are not intended to limit the invention.
  • the set pressure Ps of the corresponding gas-liquid separator should be 1.2 MPa.
  • the pressure Ps of the gas-liquid separator is detected at the initial opening. 1.3MPa, then open the first
  • the first throttling element reaches stable operation after reaching the target opening degree. After n seconds, the T4 was detected to be unchanged and continued to operate stably.
  • control method of the embodiment of the present invention is not limited to the above six types, for example, the opening degree of the first throttle element during cooling in the above six examples may be used.
  • the adjustment mode and the adjustment method of the opening degree of the first throttle element during heating are randomly combined.
  • the set parameters such as the set exhaust pressure, the set exhaust temperature, the set opening degree, and the set intermediate pressure calculated in the above embodiment may also be obtained by other methods, for example, may be set.
  • Different outdoor temperature intervals, multiple outdoor temperature intervals correspond to unused setting parameters, and corresponding setting parameters can be obtained according to the outdoor temperature range in which the actually detected outdoor ambient temperature is located. It can also be understood that the above parameters obtained through the outdoor ambient temperature review can also be obtained by a preset calculation formula.
  • a method of controlling an air conditioner according to an embodiment of the present invention wherein the air conditioner is a cold and warm type air conditioner according to the above embodiment of the present invention, a first throttle element and a second throttle, will be described in detail below with reference to FIGS.
  • the opening of the component is fixed.
  • a method for controlling an air conditioner includes the steps of: adjusting a running frequency of a two-cylinder compressor to meet a condition according to a detected compressor operating parameter and/or an outdoor ambient temperature during a cooling or heating operation, wherein the compression
  • the machine operating parameters include at least one of an operating current, an exhaust pressure, and an exhaust temperature.
  • the operating frequency of the two-cylinder compressor is adjusted according to the detection result of the detection object, wherein the detection object includes the outdoor ambient temperature, the exhaust temperature of the exhaust port, the exhaust pressure of the exhaust port, and the double cylinder. At least one of the operating currents of the compressor.
  • the compressor operating parameters and/or the outdoor ambient temperature may be re-detected after n seconds of operation, and then the operating frequency of the compressor is adjusted according to the re-detected detection result, thus repeating .
  • the repetition condition is not limited thereto.
  • the compressor operation parameter and/or the outdoor environment temperature may be re-detected, and then the operating frequency of the compressor may be adjusted according to the re-detected detection result.
  • the compressor operating parameters and/or the outdoor ambient temperature may be re-detected after n seconds of operation or after receiving the user's operating signal, and then according to the detection. As a result, the operating frequency is adjusted and repeated.
  • the compressor stops operating.
  • the system by adjusting the operating frequency of the compressor according to the detection result during the operation, the system can be operated within a suitable parameter range, and the reliability of the operation of the air conditioner can be improved.
  • a plurality of different exhaust gas temperature intervals are first preset, and the plurality of exhaust gas temperature ranges have different adjustment commands corresponding to the operating frequency, and then the exhaust gas temperature is detected and according to the detected exhaust gas temperature.
  • Exhaust temperature The adjustment command corresponding to the degree interval adjusts the operating frequency.
  • the adjustment command may include instructions of down-converting, up-converting, maintaining frequency, shutting down, and releasing the frequency limit. Therefore, by detecting the exhaust gas temperature and adjusting the operating frequency of the compressor, the operating state of the system can be directly reacted to ensure that the system operates within a suitable parameter range, thereby further improving the reliability of the operation of the air conditioner.
  • the release of the frequency limit means that the operating frequency of the compressor is not limited, and it is not necessary to adjust the operating frequency of the compressor.
  • the air conditioner is turned on and off, and the exhaust temperature TP is detected during operation.
  • the following adjustment commands are set: 115 °C ⁇ TP, shutdown; 110 ° C ⁇ TP ⁇ 115 ° C, down frequency to TP ⁇ 110 ° C; 105 ° C ⁇ TP ⁇ 110°C, frequency hold; TP ⁇ 105°C, release frequency limit.
  • a corresponding adjustment command is executed, and after the adjustment is completed, the TP is detected again. If the adjustment is satisfied, the determination is ended.
  • the exhaust gas temperature TP is detected again, and the determination is repeated. While running for n seconds, if the user shutdown command is detected or the set temperature is reached, the operation ends.
  • a plurality of outdoor temperature intervals, a heating shutdown protection current, and a cooling shutdown protection current are preset, and the plurality of outdoor temperature intervals correspond to different frequency limiting protection currents.
  • the outdoor ambient temperature is detected, and then the corresponding frequency-limiting protection current is obtained according to the detected outdoor temperature range of the outdoor ambient temperature, and the operating frequency is adjusted so that the actually detected operating current reaches a corresponding frequency-limiting protection current, wherein when cooling When the detected running current is greater than the cooling shutdown protection current, it will stop directly; when the running current detected during heating is greater than the heating shutdown protection current, it will stop directly.
  • the correspondence between the plurality of outdoor temperature intervals and the corresponding frequency limiting protection current during cooling can be as follows: when T4>50.5° C., the frequency limiting protection current is CL5; when 49.5° C ⁇ T4>45.5° C., the limit is The frequency protection current is CL4; when 44.5°C ⁇ T4>41°C, the frequency limiting protection current is CL3; when 40°C ⁇ T4>33°C, the frequency limiting protection current is CL2; when 32 ⁇ T4°C, the frequency limiting protection current is CL1.
  • the specific values of the CL5, CL4, CL3, CL2, and CL1 and the cooling shutdown protection current may be specifically limited according to actual conditions, and are not limited herein.
  • the outdoor ambient temperature T4 detected during the cooling operation is within the outdoor temperature range of 40 ° C ⁇ T4 > 33 ° C, it means that the operating current is not allowed to exceed the frequency limiting protection current CL2. If it is exceeded, the frequency will be reduced to lower than the operating current.
  • the frequency limiting protection current is CL2.
  • the corresponding relationship between multiple outdoor temperature intervals and the corresponding frequency limiting protection current during heating can be as follows: when T4>15°C, the frequency limiting protection current is HL5; when 14°C>T4 ⁇ 10°C, the frequency limiting protection The current is HL4; when 9°C>T4 ⁇ 6°C, the current limiting protection current is HL3; when 5°C>T4 ⁇ -19°C, the frequency limiting protection current is HL2; when -20°C>T4, the frequency limiting protection current is HL1.
  • the specific values of HL5, HL4, HL3, HL2, HL1 and the heating shutdown protection current can be specifically limited according to the actual situation, and are not limited herein.
  • the outdoor ambient temperature T4 detected during heating operation is located in the outdoor temperature range of 9 °C>T4 ⁇ 6 °C, it means that the operating current is not allowed to exceed the frequency limiting protection current HL3. If it exceeds, the frequency will be reduced to lower than the running current. Frequency limiting protection current HL3.
  • a plurality of outdoor temperature intervals may be preset, and the plurality of outdoor temperature intervals correspond to different set operating frequencies, and the set operating frequency corresponding to the outdoor temperature range in which the actually detected outdoor ambient temperature is located Adjust the operating frequency of the compressor.
  • a plurality of different exhaust pressure intervals are first preset, and the adjustment commands of the operating frequencies corresponding to the plurality of exhaust pressure intervals are different, and then the exhaust pressure is detected and according to the detected exhaust pressure.
  • the adjustment command corresponding to the exhaust pressure range adjusts the operating frequency.
  • the adjustment command may include instructions of down-converting, up-converting, maintaining frequency, shutting down, and releasing the frequency limit. Therefore, by detecting the exhaust pressure to adjust the operating frequency of the compressor, the operating state of the system can be directly reacted to ensure that the system operates within a suitable parameter range, thereby further improving the reliability of the operation of the air conditioner.
  • the control method of the single-cooling type air conditioner is the same as that of the cooling and cooling type air conditioner, and will not be described in detail herein.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un climatiseur de refroidissement et de chauffage (100), un climatiseur de refroidissement uniquement (100) et un procédé de commande pour un climatiseur (100). Le climatiseur de refroidissement et de chauffage (100) comprend : un compresseur à deux cylindres (1), un ensemble d'inversion (2), un échangeur de chaleur extérieur (3), un échangeur de chaleur intérieur (4), un séparateur vapeur-liquide (5) et un radiateur de réfrigérant (9). Le compresseur à deux cylindres (1) présente un rapport de volume de décharge d'air entre un second cylindre (12) et un premier cylindre (11) présentant une valeur comprise entre 1 et 10%. Le séparateur vapeur-liquide (5) comprend une sortie de gaz (m), une première interface (f) et une seconde interface (g). La sortie de gaz (m) est raccordée au second cylindre (12), un premier élément d'étranglement (6) est raccordé en série entre la première interface (f) et l'échangeur de chaleur extérieur (3), et un second élément d'étranglement (7) est raccordé en série entre la seconde interface (g) et l'échangeur de chaleur intérieur (4). Le radiateur de réfrigérant (9) utilisé pour la dissipation de chaleur des éléments de commande électriques est raccordé en série entre le premier élément d'étranglement (6) et la première interface (f) ; en variante, le radiateur de réfrigérant (9) est raccordé en série entre le second élément d'étranglement (7) et la seconde interface (g). Grâce à l'agencement ci-dessus, la présente invention améliore efficacement l'efficacité énergétique d'un climatiseur, facilite l'économie d'énergie et la réduction des émissions, améliore l'efficacité d'échange de chaleur et assure un refroidissement efficace des éléments de commande électriques.
PCT/CN2016/087933 2016-04-29 2016-06-30 Climatiseur de refroidissement et de chauffage, climatiseur de refroidissement uniquement, et procédé de commande pour climatiseur WO2017185514A1 (fr)

Applications Claiming Priority (32)

Application Number Priority Date Filing Date Title
CN201610286724.6 2016-04-29
CN201610281176.8A CN105758038A (zh) 2016-04-29 2016-04-29 单冷型空调器及其控制方法
CN201620388590.4 2016-04-29
CN201620390779.7 2016-04-29
CN201620390779.7U CN205641647U (zh) 2016-04-29 2016-04-29 冷暖型空调器
CN201610286725.0 2016-04-29
CN201620390400.2 2016-04-29
CN201610285970.XA CN105783309A (zh) 2016-04-29 2016-04-29 冷暖型空调器及其控制方法
CN201620390674.1 2016-04-29
CN201620388621.6U CN205980069U (zh) 2016-04-29 2016-04-29 冷暖型空调器
CN201610286724.6A CN105783314B (zh) 2016-04-29 2016-04-29 单冷型空调器及其控制方法
CN201610284972.7 2016-04-29
CN201620390778.2 2016-04-29
CN201610280074.4 2016-04-29
CN201610286725.0A CN105783325A (zh) 2016-04-29 2016-04-29 冷暖型空调器及其控制方法
CN201620390400.2U CN205641641U (zh) 2016-04-29 2016-04-29 冷暖型空调器
CN201610286093.8A CN105783310B (zh) 2016-04-29 2016-04-29 冷暖型空调器及其控制方法
CN201610286119.9A CN105783312B (zh) 2016-04-29 2016-04-29 冷暖型空调器及其控制方法
CN201610286093.8 2016-04-29
CN201620390778.2U CN205641646U (zh) 2016-04-29 2016-04-29 冷暖型空调器
CN201610285970.X 2016-04-29
CN201620388621.6 2016-04-29
CN201620390148.5 2016-04-29
CN201610280074.4A CN105758036A (zh) 2016-04-29 2016-04-29 单冷型空调器及其控制方法
CN201610286119.9 2016-04-29
CN201610281176.8 2016-04-29
CN201620390516.6 2016-04-29
CN201620390516.6U CN205641642U (zh) 2016-04-29 2016-04-29 单冷型空调器
CN201620390674.1U CN205641644U (zh) 2016-04-29 2016-04-29 单冷型空调器
CN201620388590.4U CN205641637U (zh) 2016-04-29 2016-04-29 单冷型空调器
CN201610284972.7A CN105758039B (zh) 2016-04-29 2016-04-29 单冷型空调器及其控制方法
CN201620390148.5U CN205641640U (zh) 2016-04-29 2016-04-29 单冷型空调器

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CN110953757A (zh) * 2019-12-25 2020-04-03 珠海格力电器股份有限公司 喷液增焓热泵机组及其控制方法

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JP2000337720A (ja) * 1999-05-24 2000-12-08 Hitachi Ltd 空気調和装置
CN103765124A (zh) * 2011-09-01 2014-04-30 大金工业株式会社 制冷装置
CN103353156A (zh) * 2013-04-27 2013-10-16 宁波奥克斯空调有限公司 采用双缸压缩机的变频空调的控制方法
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CN109654764A (zh) * 2019-01-28 2019-04-19 奥克斯空调股份有限公司 一种双级增焓系统及其化霜控制方法
CN110953757A (zh) * 2019-12-25 2020-04-03 珠海格力电器股份有限公司 喷液增焓热泵机组及其控制方法

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