WO2019194371A1 - Procédé de commande de système de climatisation - Google Patents

Procédé de commande de système de climatisation Download PDF

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Publication number
WO2019194371A1
WO2019194371A1 PCT/KR2018/010139 KR2018010139W WO2019194371A1 WO 2019194371 A1 WO2019194371 A1 WO 2019194371A1 KR 2018010139 W KR2018010139 W KR 2018010139W WO 2019194371 A1 WO2019194371 A1 WO 2019194371A1
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WIPO (PCT)
Prior art keywords
cop
basic
operation value
modified
control configuration
Prior art date
Application number
PCT/KR2018/010139
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English (en)
Korean (ko)
Inventor
김대형
김선택
사용철
Original Assignee
엘지전자 주식회사
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Publication of WO2019194371A1 publication Critical patent/WO2019194371A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F24F2110/22—Humidity of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans

Definitions

  • the present invention relates to a control method of an air conditioning system.
  • An air conditioning system is a system for maintaining air in a predetermined space in a state most suitable for use and purpose.
  • the air conditioning system includes a compressor, a condenser, an expansion device, and an evaporator, and a refrigerant cycle for performing the compression, condensation, expansion, and evaporation processes of the refrigerant is driven to cool or heat the predetermined space.
  • the predetermined space may be variously proposed according to the place where the air conditioning system is used.
  • the predetermined space may be an indoor space of a house or a building.
  • the predetermined space may be a boarding space in which a person boards.
  • the air conditioning system includes an indoor unit disposed in the predetermined space and an outdoor unit connected to form the indoor unit and the refrigerant cycle. Such an air conditioning system can provide harmonized air for the convenience of the user.
  • the applicant has applied for a technology related to an air conditioning system as follows.
  • Patent No. 10-1203559 Air Conditioning System with Group Control and Its Operation Method
  • the air conditioning system has a problem in that it operates so that a relatively large amount of power is consumed.
  • the efficiency is changed according to the installation conditions there is a problem that the user's reliability is lowered.
  • the present invention provides a control method of an air conditioning system that is operated to have a maximum COP at all times regardless of the installation place and installation conditions.
  • step by step to derive the operating state having the maximum COP step by step to derive the operating state having the maximum COP, and provides a control method of the air conditioning system that is operated to have the maximum COP.
  • the step of inputting the power and the set temperature the step of measuring the outdoor temperature, the indoor temperature and the outdoor humidity, the set temperature, the outdoor temperature, the indoor temperature and the outdoor humidity Determining a required amount of heat according to the method, initializing a plurality of control elements to provide the same amount of supply heat as the required amount of heat, calculating an initial COP by dividing the supply heat amount by power consumption, and an operation value of the control element.
  • the step of adjusting the maximum COP is derived.
  • the control configuration includes an inverter compressor and a fan
  • the operating value of the control configuration includes an operating frequency of the inverter compressor and a rotation speed of the fan.
  • the control configuration is operated to the basic operation value
  • the step of calculating the basic COP by dividing the amount of heat supplied by the power consumption and the control configuration to the The operation may be performed by changing from a basic operation value to a modified operation value, and calculating a modified COP by dividing the supply calories by power consumption.
  • the air conditioning system can be operated to have a maximum COP at all times.
  • FIG. 1 is a view showing the configuration of an air conditioning system according to an embodiment of the present invention.
  • FIG. 2 is a view showing a control configuration of an air conditioning system according to an embodiment of the present invention.
  • FIG. 3 is a view showing a basic control flow of the air conditioning system according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a control flow in which a maximum COP of an air conditioning system according to a first embodiment of the present invention is derived.
  • FIG. 5 is a diagram illustrating a control flow for deriving a maximum COP of an air conditioning system according to a second embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a control flow for deriving a maximum COP of an air conditioning system according to a third embodiment of the present invention.
  • first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected or connected to that other component, but between components It will be understood that may be “connected”, “coupled” or “connected”.
  • the air conditioning system 10 may include at least one outdoor unit and at least one indoor unit.
  • the air conditioning system 10 may include at least one outdoor unit and at least one indoor unit.
  • the air conditioning system 10 includes an outdoor heat exchanger 11, a compressor 12, an indoor heat exchanger 13, and expansion valves 14 and 15. do.
  • the outdoor heat exchanger 11, the compressors 12 and 20, the indoor heat exchanger 13 and the expansion valves 14 and 15 are connected by a refrigerant pipe.
  • the outdoor heat exchanger 11 may be disposed in the outdoor space so that heat exchange between the outdoor air and the refrigerant is performed.
  • the air conditioning system 10 further includes a fan 30 installed at one side of the outdoor heat exchanger 11. By the operation of the fan 30, the outdoor air may be forced convection to heat exchange with the outdoor heat exchanger (11).
  • the compressors 12 and 20 correspond to a configuration for compressing the flowing refrigerant.
  • the compressor includes a constant speed compressor 12 having a constant compression capacity and an inverter compressor 20 having a variable compression capacity.
  • the indoor heat exchanger 13 may be disposed in an indoor space such that heat exchange between indoor air and a refrigerant occurs.
  • the indoor space may be understood as a space in which the air conditioning system 10 is installed to provide harmonious air.
  • the indoor heat exchanger 13 may be provided in plurality. Each indoor heat exchanger 13 may be arranged in different spaces, and the air conditioning system 10 may match air in different spaces.
  • FIG. 1 three indoor heat exchangers 13 are exemplarily illustrated, but the number of the indoor heat exchangers 13 is not limited thereto.
  • an indoor fan for forced convection of indoor air may be installed at one side of the indoor heat exchanger 13.
  • the expansion valves 14 and 15 include an outdoor expansion valve 14 installed adjacent to the outdoor heat exchanger 11 and an indoor expansion valve 15 installed adjacent to the indoor heat exchanger 13. do.
  • the outdoor expansion valve 14 and the indoor expansion valve 15 may be configured as a valve that can adjust the opening degree, such as an electronic expansion valve (EEV).
  • EEV electronic expansion valve
  • the indoor expansion valve 15 is provided in a number corresponding to the indoor heat exchanger 13 provided in plurality, it may be installed on one side of each indoor heat exchanger (13).
  • the indoor expansion valve 15 is operated to selectively block the refrigerant flowing into each indoor heat exchanger 13 depending on whether the indoor heat exchanger 13 is operated.
  • the air conditioning system 10 includes an accumulator 16 for filtering liquid refrigerant from among refrigerants flowing toward the compressor 12, and a flow direction of the refrigerant discharged from the compressor 12 in the outdoor heat exchanger. Further included is a flow diverting unit 17 for selectively converting to the unit 11 or the indoor heat exchanger 13.
  • the flow direction of the refrigerant by the flow switching unit 17 may be switched.
  • the flow switching unit 17 flows the refrigerant discharged from the compressor 12 to the indoor heat exchanger 13.
  • the indoor expansion valve 15 is fully open and the outdoor expansion valve 14 is partially open.
  • the refrigerant passing through the indoor heat exchanger 13 passes through the indoor expansion valve 15 without changing its state, expands while passing through the outdoor expansion valve 14, and then flows into the outdoor heat exchanger 11. Can be.
  • the flow switching unit 17 flows the refrigerant discharged from the compressor 12 to the outdoor heat exchanger 11.
  • the outdoor expansion valve 14 is fully open, and the indoor expansion valve 15 is partially open.
  • the refrigerant passing through the outdoor heat exchanger 11 passes through the outdoor expansion valve 14 without changing its state, expands while passing through the indoor expansion valve 15, and then flows into the indoor heat exchanger 13. Can be.
  • the air conditioning system 10 further includes a refrigerant amount adjusting unit for adjusting the flow amount of the refrigerant circulating in the refrigeration cycle.
  • the refrigerant amount adjusting unit includes a receiver 18 for storing at least a portion of the refrigerant circulating in the refrigerating cycle, and a receiver valve 40 for adjusting the amount of refrigerant flowing into the receiver 18.
  • the receiver 18 is understood as an apparatus capable of storing at least some of the refrigerant circulating in the air conditioning system 10, such as a tank in which the refrigerant is received.
  • the receiver valve 40 may be installed at one side of the receiver 18 to adjust the amount of refrigerant stored in the receiver 18.
  • the receiver valve 40 is installed only on the inflow side of the receiver 18, but the receiver valve 40 may be installed in various positions and forms.
  • the receiver valve 40 may be configured as a valve that can adjust the opening degree, such as an electromagnetic expansion valve (EEV).
  • EEV electromagnetic expansion valve
  • FIG. 1 shows an exemplary form constituting the air conditioning system according to the spirit of the present invention, each configuration may be added or omitted.
  • FIG. 2 is a view showing a control configuration of an air conditioning system according to an embodiment of the present invention.
  • the air conditioning system 10 As shown in FIG. 2, the air conditioning system 10 according to the spirit of the present invention is provided with a controller 100 for controlling various configurations.
  • the air conditioning system 10 includes user input units 50 and 51 for transmitting a predetermined command to the controller 100 and measurement units 52, 53, and 54 for transmitting predetermined information.
  • the user input units 50 and 51 may be understood as a configuration in which predetermined information is input to the air conditioning system 10 by a user.
  • the user input units 50 and 51 include a power supply unit 50 for inputting ON / OFF of the air conditioning system 10 and a setting temperature input unit 51 for inputting a set temperature required for the harmonic space.
  • the air conditioning system 10 may be automatically turned on / off or a set temperature may be automatically input.
  • the user input units 50 and 51 may further include a configuration in which various modes are input.
  • the measuring units 52, 53, and 54 may be understood as configurations in which various pieces of information related to the harmonic space are measured.
  • the measuring unit 52, 53, 54 includes an outdoor temperature sensor 52, an indoor temperature sensor 53, and an indoor humidity sensor 54.
  • the outdoor temperature sensor 52 may be installed at the suction side of the outdoor heat exchanger 11 to measure the outdoor temperature.
  • the indoor temperature sensor 53 and the indoor humidity sensor 54 may be installed at the suction side of the indoor heat exchanger 13 to measure the indoor temperature and the indoor humidity, respectively.
  • the controller 100 may control various configurations through commands or information transmitted from the user input units 50 and 51 and the measurement units 52, 53, and 54.
  • the controller 100 may control the inverter compressor 20, the fan 30, and the receiver valve 40 at each stage.
  • the first stage of the inverter compressor 20 is 130HZ and may be increased by 1HZ for each stage. That is, the sixth step of the inverter compressor 20 may correspond to 135HZ.
  • the first stage of the fan 30 is 700 RPM, and may be increased by 50 RPM for each stage.
  • the first stage of the receiver valve 40 may be a state in which the refrigerant flowing into the receiver 18 is completely blocked when the opening degree is zero.
  • the air conditioning system 10 includes a memory unit 55 storing various data.
  • the memory unit 55 may store an experimental operation value related to the operation of the air conditioning system 10. For example, an operating value for operating the air conditioning system 10 to have a maximum COP under a predetermined condition may be stored.
  • COP Coefficient Of Performance
  • the operation value stored in the memory unit 55 corresponds to a value having a maximum COP when the air conditioning system 10 is installed in a laboratory having a predetermined condition. That is, when the air conditioning system 10 is installed in another place, the operation having the maximum COP may not be performed as the operation value stored in the memory unit 55.
  • the present invention controls the air conditioning system 10 to operate with the maximum COP at any place.
  • the control method of the air conditioning system 10 will be described in detail.
  • FIG. 3 is a view showing a basic control flow of the air conditioning system according to an embodiment of the present invention.
  • a power source and a set temperature are input (S10). As described above, it may be input by the user through the power supply unit 50 and the set temperature input unit 51.
  • outdoor temperature, indoor temperature and outdoor humidity are measured (S20).
  • the outdoor temperature sensor 52, the indoor temperature sensor 53, and the indoor humidity sensor 54 may be measured and information about the same may be transmitted.
  • the required heat amount is determined according to the input set temperature, the measured outdoor temperature, the indoor temperature, and the outdoor humidity input as described above (S30). Such control is performed in a general air conditioning system, and a detailed description thereof will be omitted.
  • a plurality of control configurations are initially operated to provide the same amount of supply heat as the required amount of heat (S40).
  • the operation of the plurality of control configurations to the operating value stored in the memory unit 55 is referred to as initial operation.
  • the operating value stored in the memory unit 55 corresponds to a value having a maximum COP when the air conditioning system 10 is installed in a laboratory.
  • the plurality of control configurations correspond to the devices constituting the air conditioning system 10.
  • the plurality of control configurations correspond to the configuration that affects the COP of the air conditioning system 10.
  • the COP may be adjusted as the operation values of the plurality of control configurations are adjusted.
  • the supply heat amount is calculated by subtracting the subcooled enthalpy from the discharge enthalpy in the heating operation, and is calculated by subtracting the subcooled enthalpy from the suction enthalpy in the cooling operation.
  • Such calculation is performed in a general air conditioning system, and detailed description thereof will be omitted.
  • the operation value is changed (S55).
  • the changed value may be smaller than the change value of each step described above.
  • the operating value of the inverter compressor 20 may be changed by 0.5 HZ or the operating value of the fan 30 may be changed by 10 RPM.
  • the difference between the supply calorie and the required calorie is within the predetermined range. For example, it is determined that the difference between the supply calories and the required calories is equal to or less than 2%.
  • the evaporation pressure, the condensation pressure, the suction temperature, and the discharge temperature of the refrigerant are stabilized when they are not controlled. For example, when the evaporation pressure, the condensation pressure, the suction temperature, and the discharge temperature of the refrigerant are not adjusted for more than 3% for 5 minutes, it may be determined that the refrigerant is stable.
  • the air conditioning system 10 according to the spirit of the present invention is operated to derive the maximum COP (S60). At this time, the air conditioning system 10 adjusts the operation value of the control configuration to derive the maximum COP.
  • the maximum COP when the maximum COP is derived, a value at which the plurality of control configurations are operated is stored (S70). At this time, the operation value of the control configuration is referred to as the maximum operation value. Accordingly, when the same set temperature, the outdoor temperature, the indoor temperature and the outdoor humidity are input, the maximum COP derivation process may be omitted and the control configuration may be operated at the maximum operating value.
  • FIG. 4 is a diagram illustrating a control flow in which a maximum COP of an air conditioning system according to a first embodiment of the present invention is derived.
  • the air conditioning system 10 is operated at a basic operation value (S601).
  • the basic operation value may include the initial operation value. That is, when such a step is first performed, the basic operation value corresponds to the operation value stored in the memory unit 55.
  • the basic COP is calculated by dividing the amount of heat supplied by the consumed power (S602).
  • the basic COP may be referred to as an initial COP.
  • the air conditioning system 10 is operated by changing the operation value of the control configuration (S603).
  • the changed operation value is referred to as a modified operation value. That is, the control configuration is changed from the basic operation value to the modified operation value and operated.
  • the modified COP is calculated by dividing the amount of heat supplied by the power consumed (S604).
  • the supply heat amount is the same value as the required heat amount determined according to the input, the basic COP and the modified COP vary according to the power consumed.
  • the basic COP and the modified COP are compared (S605).
  • the control configuration is operated at the basic operation value
  • the correction COP is high
  • the control configuration is operated at the correction operation value.
  • the air conditioning system 10 may be operated with a new modified operation value (S602), calculate a new modified COP (S603), and compare it with the basic COP (S604).
  • the control arrangement continues to operate at the correction operation value.
  • the basic operation value is changed to the corrected operation value and stored (S607). That is, the corrected operation value becomes a new basic operation value.
  • the air conditioning system is operated again with the basic operation value (S601).
  • the basic operation value corresponds to a value different from the basic operation value in the previous step.
  • the basic COP is calculated again by dividing the supply heat by the power consumption (S602).
  • the air conditioning system 10 is operated by changing from the basic operation value to a new modified operation value (S603), and dividing the supply heat amount by power consumption to calculate a new modified COP (S604). Then, the newly calculated basic COP and the modified COP are compared (S605).
  • the air conditioning system 10 performs the steps S601 to S605 repeatedly to derive the maximum COP.
  • whether the maximum COP is determined may be determined by comparing the basic COP with the modified COP when the basic COP is higher than a predetermined number of times (S606).
  • the basic COP may be stored as the maximum COP, and the basic operation value from which the maximum COP is derived may be stored as the maximum operation value.
  • the coefficient of the control structure which affects the air conditioning system 10 COP value is limited, and the operation value of the control structure is adjusted within a limited range. That is, since the number of adjustable correction operation values is limited, the maximum COP can be derived when the steps S601 to S605 are repeatedly performed more than a predetermined number of times.
  • FIG. 5 is a diagram illustrating a control flow for deriving a maximum COP of an air conditioning system according to a second embodiment of the present invention.
  • the operating value of the control configuration includes the operating frequency of the inverter compressor 20 and the rotational speed of the fan 30, the operation value can be adjusted for each step.
  • X A, B
  • the operating values of the inverter compressor 20 and the fan 30 are numerically limited. Such numerical ranges are exemplary and are not limited thereto.
  • the inverter compressor 20 and the fan 30 are operated in the first to tenth stages.
  • the first stage of the inverter compressor 20 is 130HZ and is increased by 1HZ for each stage.
  • the first stage of the fan 30 is 700 RPM, and is increased by 50 RPM for each stage.
  • a basic operation value S611
  • the basic operation value is the initial operation value.
  • a basic COP that is, an initial COP is calculated by dividing the amount of heat supplied to consumed power (S612).
  • the initial operation value is a sixth stage of the inverter compressor 20 and a third stage of the fan 30. That is, the air conditioning system 10 is initially operated such that the inverter compressor 20 is operated at 135 HZ and the fan 30 is operated at 800 RPM.
  • the air conditioning system 10 is operated by changing the operation value of the control arrangement. First, the operation frequency of the inverter compressor 20 is increased by one step, and the rotational speed of the fan 30 is decreased by one step (S613). As such, the inverter compressor 20 and the fan 30 may be adjusted in different directions to maintain the supply capacity and to stabilize the system.
  • the inverter compressor 20 is operated in a seventh stage and the fan 30 is changed in a second stage.
  • the modified COP is calculated by dividing the supply heat by the consumed power (S614).
  • the basic COP and the modified COP are compared (S615).
  • the control arrangement continues to operate at the correction operation value. This may be understood as changing the operation value of the inverter compressor 20 to increase the operation value of the fan 30 to increase the COP.
  • the basic operation value is changed to the corrected operation value and stored (S616). That is, the seventh stage of the inverter compressor 20 and the second stage of the fan 30 are stored as basic operation values.
  • the air conditioning system 10 increases the operation frequency of the inverter compressor 20 again by one step and decreases the rotational speed of the fan 30 by one step (S613). Accordingly, the inverter compressor 20 is operated in the eighth stage and the fan 30 is operated in the first stage.
  • the operating value of the control configuration can be continuously raised or lowered in the direction in which the COP is raised. This may be done continuously until the COP is no longer raised or outside the range of rise and fall.
  • the control range of the control configuration is widely specified, and the control is determined according to the change of the COP value. Therefore, in FIG. 5, the case where the control configuration is out of the range of rise and fall is omitted.
  • the control configuration is again driven to the basic operating value (S621). That is, the inverter compressor 20 is operated in a sixth stage and the fan 30 is changed in a third stage. This may be understood as changing the operation value of the inverter compressor 20 to increase the operation value of the fan 30 to lower the COP.
  • the operation frequency of the inverter compressor 20 is decreased by one step, and the rotational speed of the fan 30 is increased by one step (S623). That is, the operation values of the inverter compressor 20 and the fan 30 are changed in a direction different from the previous one.
  • a modified COP is calculated by dividing the supply heat amount by the consumed power (S624), and comparing the basic COP with the modified COP (S625).
  • the control arrangement continues to operate at the correction operation value. That is, the inverter compressor 20 is operated in the fifth stage, and the fan 30 is operated in the fourth stage. This may be understood as changing the operating value of the inverter compressor 20 to lower the operating value of the fan 30 and raising the COP.
  • the basic operation value is changed to the corrected operation value and stored (S626). That is, the fifth stage of the inverter compressor 20 and the fourth stage of the fan 30 are stored as basic operation values.
  • the air conditioning system 10 again lowers the operation frequency of the inverter compressor 20 by one step and increases the rotational speed of the fan 30 by one step (S623). Accordingly, the inverter compressor 20 is operated in the fourth stage and the fan 30 is operated in the fifth stage. That is, as described above, the operation value of the control configuration can be continuously raised or lowered in the direction in which the COP is raised.
  • the basic COP is stored as the maximum COP without changing the operation values of the inverter compressor 20 and the fan 30 anymore (S630).
  • the air conditioning system 10 may derive the maximum COP by increasing or decreasing the operating values of the inverter compressor 20 and the fan 30.
  • FIG. 6 is a diagram illustrating a control flow for deriving a maximum COP of an air conditioning system according to a third embodiment of the present invention.
  • the operation value of the control configuration includes the opening amount of the receiver valve 40, the operation value can be adjusted for each step.
  • the air conditioning system 10 is operated with a basic operation value (S631), and a basic COP is calculated (S632).
  • the basic operating value may correspond to an operating value having the maximum COP derived in FIG. 5. That is, the maximum COP of the system is derived by changing the operation value of the receiver valve 40 at the maximum COP that can be derived by increasing or decreasing the operation values of the inverter compressor 20 and the fan 30.
  • the air conditioning system 10 may derive the maximum COP by changing operating values of the inverter compressor 20, the fan 30, and the receiver valve 40. At this time, the operating value of the inverter compressor 20 and the fan 30 which have a relatively large influence on the COP value may be adjusted first, and then the operating value of the receiver valve 40 may be adjusted.
  • the opening amount of the receiver valve 40 is increased by one step (S633).
  • the modified COP is calculated by dividing the supply heat by the consumed power (S634).
  • the basic COP and the modified COP are compared (S635).
  • the control arrangement continues to operate at the correction operation value. It can be understood that the change to increase the opening amount of the receiver valve 40 raises the COP.
  • the basic operation value is changed to the corrected operation value and stored (S636).
  • the air conditioning system 10 increases the opening amount of the receiver valve 40 again (S633). That is, the opening amount of the receiver valve 40 can be continuously increased in the direction in which the COP is raised.
  • the opening amount of the receiver valve 40 is lowered by one step (S643). That is, the operation value of the receiver valve 40 is changed in a direction different from the previous one.
  • the modified COP is calculated by dividing the amount of heat supplied by the consumed power (S644), and comparing the basic COP with the modified COP (S645).
  • the control arrangement continues to operate at the correction operation value. It can be understood that the change to lower the opening amount of the receiver valve 40 raises the COP.
  • the air conditioning system 10 lowers the opening amount of the receiver valve 40 by one step (S643). That is, the opening amount of the receiver valve 40 can be continuously lowered in the direction in which the COP is raised.
  • the basic COP is stored as the maximum COP without changing the opening amount of the receiver valve 40 anymore (S650).
  • the air conditioning system 10 may derive the maximum COP by increasing or decreasing the operation values of the inverter compressor 20, the fan 30, and the receiver valve 40.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente invention concerne un procédé de commande d'un système de climatisation. Le procédé de commande d'un système de climatisation, selon une idée de la présente invention, comprend les étapes consistant à : introduire une puissance et une température de consigne ; mesurer la température extérieure, la température intérieure et l'humidité extérieure ; déterminer une quantité de chaleur requise selon la température de consigne, la température extérieure, la température intérieure et l'humidité extérieure ; faire fonctionner initialement une pluralité de composants de commande de façon à fournir une quantité de chaleur d'alimentation qui est la même que la quantité de chaleur requise ; calculer un coefficient de performance (COP) initial en divisant la quantité de chaleur d'alimentation par la consommation d'énergie ; et dériver un COP maximal en régulant une valeur de fonctionnement des composants de commande. Le composant de commande inclut un compresseur inverseur et un ventilateur, et la valeur de fonctionnement du composant de commande inclut la fréquence de fonctionnement du compresseur inverseur et la vitesse de rotation du ventilateur.
PCT/KR2018/010139 2018-04-04 2018-08-31 Procédé de commande de système de climatisation WO2019194371A1 (fr)

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KR10-2018-0039152 2018-04-04

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CN111023413A (zh) * 2019-12-18 2020-04-17 宁波奥克斯电气股份有限公司 空调控制方法、装置和空调
WO2022193623A1 (fr) * 2021-03-15 2022-09-22 青岛海尔空调器有限总公司 Procédé de commande de climatiseur à humidification à sortie d'air vers le bas, et climatiseur à humidification à sortie d'air vers le bas

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CN111964217B (zh) * 2020-08-26 2021-07-23 特灵空调系统(中国)有限公司 空调控制方法、系统和存储介质
CN112283899B (zh) * 2020-10-30 2022-02-22 海信（广东）空调有限公司 空调器控制方法和空调器
KR20220064686A (ko) * 2020-11-12 2022-05-19 엘지전자 주식회사 공기조화기

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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WO2022193623A1 (fr) * 2021-03-15 2022-09-22 青岛海尔空调器有限总公司 Procédé de commande de climatiseur à humidification à sortie d'air vers le bas, et climatiseur à humidification à sortie d'air vers le bas

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