WO2018154718A1 - Système de climatisation - Google Patents

Système de climatisation Download PDF

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Publication number
WO2018154718A1
WO2018154718A1 PCT/JP2017/007138 JP2017007138W WO2018154718A1 WO 2018154718 A1 WO2018154718 A1 WO 2018154718A1 JP 2017007138 W JP2017007138 W JP 2017007138W WO 2018154718 A1 WO2018154718 A1 WO 2018154718A1
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WO
WIPO (PCT)
Prior art keywords
power
unit
air
conditioning system
air conditioning
Prior art date
Application number
PCT/JP2017/007138
Other languages
English (en)
Japanese (ja)
Inventor
永登 齋藤
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/007138 priority Critical patent/WO2018154718A1/fr
Priority to JP2019501038A priority patent/JP6710313B2/ja
Priority to PCT/JP2017/039385 priority patent/WO2018154853A1/fr
Publication of WO2018154718A1 publication Critical patent/WO2018154718A1/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
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/50—Load

Definitions

  • the present invention relates to an air conditioning system that suppresses power consumption when an emergency power supply is used.
  • an air conditioning system such as a multi air conditioning system for buildings is connected to an outdoor unit that is a heat source unit arranged outside a building and a plurality of indoor units arranged inside the building, and is usually supplied from a commercial power source. Operation such as cooling or heating is performed by electric power.
  • Such an air conditioning system further includes an uninterruptible power supply or an emergency generator as an emergency power supply, and operates with power from the emergency power supply when the commercial power supply that is a normal power supply stops. Yes (see, for example, Patent Document 1).
  • Patent Document 1 the compressor, the indoor unit blower, the means for detecting the commercial power supply cutoff, and the capacity of the compressor rotation speed and / or the indoor unit blower air volume are suppressed when the commercial power supply cutoff is detected.
  • an air conditioning system comprising the means.
  • the air conditioning system of Patent Document 1 has a suppression operation mode in which, for example, the compressor is operated at the lowest frequency and the air volume of the indoor unit blower is suppressed, and the suppression operation mode is performed during a power failure of the commercial power supply. It is the composition which becomes.
  • the frequency of the compressor and the air volume of the indoor unit blower are set regardless of the power supplied from the emergency power supply. For this reason, for example, when the compressor is set to the lowest frequency, the air conditioning system can only exhibit a minimum air conditioning capacity even though there is a surplus up to the upper limit of the supplied power. In some cases, the ability was insufficient.
  • the present invention has been made in order to solve the above-described problems.
  • the maximum air conditioning is achieved even when the power supply is suppressed.
  • the purpose is to provide an air conditioning system for operation.
  • An air conditioning system operates normally with power supplied from a normal power source, and includes one or a plurality of air conditioners that operate with power supplied from an emergency power source during a power failure of the normal power source.
  • the operation control unit that controls the operation of one or a plurality of the air conditioners
  • the power failure determination unit that detects a power failure of the regular power supply
  • the power failure determination unit that detects a power failure of the regular power supply
  • An operation command unit that performs an electric power limiting operation that limits electric power used by the plurality of air conditioners based on a preset upper limit electric power
  • the operation control unit is configured to limit the electric power by the operation command unit.
  • the operation of the one or more air conditioners is performed within a range where the total power used by the one or more air conditioners is equal to or less than the upper limit power. It is Gosuru thing.
  • FIG. 1 is a circuit diagram showing a circuit configuration of an air conditioner of an air conditioning system according to an embodiment of the present invention.
  • the air conditioner 1 will be described based on FIG.
  • the air conditioner 1 is used as, for example, an air conditioner that heats or cools a target space.
  • the air conditioner 1 is normally operated by electric power supplied from an ordinary power source such as a commercial power source. However, when the electric power supply from the ordinary power source is interrupted, electric power is supplied from an emergency power source.
  • the emergency power source refers to, for example, an uninterruptible device or an emergency generator.
  • the air conditioner 1 includes an outdoor unit 10, an indoor unit 50, and the like.
  • the air conditioner 1 has a refrigeration cycle for circulating refrigerant, and the indoor unit 50 can select a cooling operation mode or a heating operation mode as an operation mode.
  • the air conditioner 1 can set the operation mode of each indoor unit 50 to the cooling operation mode or the heating operation mode by the flow path switching device 13 mounted in the outdoor unit 10.
  • the outdoor unit 10 and the indoor unit 50 are connected by a refrigerant pipe 4 and a refrigerant pipe 5.
  • 1 shows an example in which two indoor units 50 (indoor unit 50a and indoor unit 50b) are connected in parallel to one outdoor unit 10.
  • the number of 10 and the indoor unit 50 is not particularly limited to this.
  • the indoor unit 50a and the indoor unit 50b are collectively described as the indoor unit 50 when it is not necessary to distinguish between the indoor unit 50a and the indoor unit 50b.
  • the components mounted in the indoor unit 50a and the indoor unit 50b are also illustrated by adding “a” and “b” at the end of each symbol. "And” b "are omitted.
  • the outdoor unit 10 is mainly installed outdoors, and has a function of supplying cold or warm heat to the indoor unit 50.
  • the outdoor unit 10 includes a compressor 11, a check valve 12, a flow path switching device 13, an outdoor unit heat exchanger 14, an accumulator 16, and the like.
  • the outdoor unit 10 is equipped with an outdoor unit blower 15.
  • the compressor 11 compresses the refrigerant flowing in through the accumulator 16 and discharges it as a high-temperature and high-pressure gas refrigerant.
  • the compressor 11 can be configured by, for example, a rotary compressor, a scroll compressor, a screw compressor, or a reciprocating compressor. Moreover, the compressor 11 is good to comprise with the capacity
  • the check valve 12 is provided on the discharge side of the compressor 11 and allows the refrigerant to flow in only one direction.
  • the flow path switching device 13 is provided on the discharge side of the compressor 11 via the check valve 12, and switches the refrigerant flow between the cooling operation mode and the heating operation mode.
  • the flow path switching device 13 can be composed of, for example, a two-way valve or a combination of three-way valves, or a four-way valve.
  • the flow path switching device 13 connects the discharge side of the compressor 11 and the outdoor unit heat exchanger 14, and the refrigerant discharged from the compressor 11 is sent to the outdoor unit heat exchanger 14.
  • the flow path switching device 13 connects the discharge side of the compressor 11 and the refrigerant pipe 4, and the refrigerant discharged from the compressor 11 is sent to the indoor unit 50 via the refrigerant pipe 4.
  • the air conditioner 1 is a cooling only machine or a heating only machine, it is not necessary to provide the flow path switching device 13.
  • the outdoor unit heat exchanger 14 acts as an evaporator during heating operation, and acts as a condenser during cooling operation, and between the heat exchange fluid such as air supplied from a fluid transfer device such as the outdoor unit blower 15 and the refrigerant. Heat exchange.
  • the outdoor unit heat exchanger 14 is, for example, a fin and tube heat exchanger, a microchannel heat exchanger, a shell and tube heat exchanger, a heat pipe heat exchanger, a double tube heat exchanger, or It can be composed of a plate heat exchanger or the like. In the first embodiment, the case where the outdoor unit heat exchanger 14 is a fin-and-tube heat exchanger will be described as an example.
  • the outdoor unit blower 15 is an example of a fluid transfer device, and supplies air to the outdoor unit heat exchanger 14.
  • the outdoor unit blower 15 can be composed of, for example, a propeller fan having a plurality of blades.
  • the outdoor unit blower 15 may be installed anywhere as long as it is installed in a place where air can be supplied to the outdoor unit heat exchanger 14.
  • the fluid conveyance apparatus according to the type of the outdoor unit heat exchanger 14 may be selected.
  • the air conditioner 1 may be equipped with, for example, a pump instead of the outdoor unit blower 15.
  • the accumulator 16 is provided on the suction side of the compressor 11 and stores excess refrigerant due to a difference between the heating operation and the cooling operation, excess refrigerant due to a transient change in operation, or excess refrigerant generated due to load conditions. is there.
  • the transitional change in operation refers to, for example, a case where the number of operating indoor units 50 changes.
  • the accumulator 16 separates the liquid refrigerant and the gas refrigerant and supplies only the gas refrigerant to the compressor 11.
  • the outdoor unit 10 is further equipped with a control device 70 that performs overall control of the air conditioner 1.
  • Each actuator (drive component) is connected to the control device 70, and the control device 70 controls the operation of each actuator.
  • the actuator include the compressor 11, the flow path switching device 13, the outdoor unit blower 15, a throttle device 52 and an indoor unit blower 53, which will be described later.
  • the control device 70 is configured to detect a power failure of the regular power supply and transmit a detection signal to a communicable device such as a centralized management controller 80 (see FIG. 2) described later.
  • the control device 70 controls the operation of each actuator based on detection values from various sensors (not shown) (hereinafter referred to as a sensor group 60).
  • a sensor group 60 for example, a pressure sensor that is provided on the discharge side of the compressor 11 and detects the pressure of refrigerant discharged from the compressor 11, and a temperature sensor that is installed in each indoor unit 50 and detects the temperature. Etc. are included.
  • the control device 70 may be configured by hardware such as a circuit device, or may be configured by an arithmetic device such as a microcomputer or a CPU (Central Processing Unit) and software executed by the arithmetic device. .
  • control apparatus 70 is mounted in the outdoor unit 10 as an example, the mounting location of the control apparatus 70 is not particularly limited.
  • the indoor unit 50 may be provided with a control device, and the control device of the indoor unit 50 and the control device 70 may be connected to be communicable. In this case, an instruction from a remote controller (not shown) is input to the control device 70 via the control device of the indoor unit 50.
  • the indoor unit 50 is installed indoors or the like, for example, and has a function of cooling or heating the air-conditioning target space by the cold or warm heat supplied from the outdoor unit 10.
  • Each indoor unit 50 includes an indoor unit heat exchanger 51, an expansion device 52, an indoor unit blower 53, and the like.
  • the indoor unit heat exchanger 51 acts as a condenser during the heating operation, and acts as an evaporator during the cooling operation.
  • the indoor unit heat exchanger 51 performs heat exchange between a heat exchange fluid such as air supplied from a fluid transfer device such as the indoor unit blower 53 and the refrigerant, and supplies air to the air-conditioning target space. Produce air.
  • the indoor unit heat exchanger 51 is, for example, a fin and tube heat exchanger, a microchannel heat exchanger, a shell and tube heat exchanger, a heat pipe heat exchanger, a double pipe heat exchanger, or It can be composed of a plate heat exchanger or the like. In the first embodiment, the case where the indoor unit heat exchanger 51 is a fin-and-tube heat exchanger will be described as an example.
  • the indoor unit blower 53 is an example of a fluid transfer device, and supplies air to the indoor unit heat exchanger 51.
  • the indoor unit blower 53 can be composed of, for example, a propeller fan having a plurality of blades.
  • the indoor unit blower 53 may be disposed anywhere as long as it is installed in a place where air can be supplied to the indoor unit heat exchanger 51.
  • what is necessary is just to select a fluid conveying apparatus according to the type of the indoor unit heat exchanger 51. For example, when the heat exchange fluid is water or brine, a pump is mounted on the indoor unit 50 instead of the indoor unit blower 53 as a fluid transfer device.
  • the expansion device 52 expands and depressurizes the refrigerant that has passed through the indoor unit heat exchanger 51 or the outdoor unit heat exchanger 14.
  • the expansion device 52 is provided between the outdoor unit heat exchanger 14 and each indoor unit heat exchanger 51.
  • the expansion device 52 may be constituted by, for example, an electric expansion valve that can adjust the flow rate of the refrigerant.
  • a mechanical expansion valve using a diaphragm as a pressure receiving portion, a capillary tube, or the like may be used instead of using an electric expansion valve.
  • the air conditioner 1 is configured such that the indoor unit 50 can perform a cooling operation or a heating operation based on an instruction from the indoor unit 50, for example. In the first embodiment, the air conditioner 1 can execute the same operation of the cooling operation or the heating operation in all of the connected indoor units 50.
  • the outdoor unit 10 causes the refrigerant discharged from the compressor 11 to flow into the indoor unit heat exchanger 51 via the outdoor unit heat exchanger 14.
  • the flow path switching device 13 is switched.
  • the low-temperature and low-pressure refrigerant is compressed and discharged as a high-temperature and high-pressure gas refrigerant.
  • the high-temperature and high-pressure gas refrigerant discharged from the compressor 11 flows into the outdoor unit heat exchanger 14 via the check valve 12 and the flow path switching device 13.
  • the refrigerant that has flowed into the outdoor unit heat exchanger 14 is heat-exchanged with the air supplied by the outdoor unit blower 15, and becomes a high-temperature and high-pressure liquid refrigerant that flows out of the outdoor unit heat exchanger 14.
  • the high-temperature and high-pressure liquid refrigerant flowing into the indoor unit 50 is converted into a low-temperature and low-pressure liquid refrigerant or a two-phase refrigerant by the expansion device 52 provided in the indoor unit 50 and flows into the indoor unit heat exchanger 51.
  • the refrigerant that has flowed into the indoor unit heat exchanger 51 is heat-exchanged with the air supplied by the indoor unit blower 53 to become a low-temperature and low-pressure gas refrigerant and flows out of the indoor unit heat exchanger 51.
  • the refrigerant absorbs heat from the air in the indoor unit heat exchanger 51 the room that is the air-conditioning target space is cooled.
  • the refrigerant that has flowed out of the indoor unit heat exchanger 51 passes through the refrigerant pipe 4 and flows into the outdoor unit 10.
  • the refrigerant that has flowed into the outdoor unit 10 is again sucked into the compressor 11 via the flow path switching device 13 and the accumulator 16. Thereafter, the above cycle is repeated.
  • Heating operation mode Next, the heating operation mode performed by the air conditioner 1 will be described.
  • the flow of the refrigerant in the heating operation mode is indicated by a solid line arrow.
  • the heating operation mode of the air conditioner 1 will be described by taking as an example a case where the heat exchange fluid is air and the heat exchange fluid is a refrigerant.
  • the outdoor unit 10 causes the refrigerant discharged from the compressor 11 to flow into the indoor unit heat exchanger 51 without passing through the outdoor unit heat exchanger 14. Then, the flow path switching device 13 is switched.
  • the low-temperature and low-pressure refrigerant is compressed and discharged as a high-temperature and high-pressure gas refrigerant.
  • the high-temperature and high-pressure gas refrigerant discharged from the compressor 11 flows into the indoor unit heat exchanger 51 via the check valve 12 and the flow path switching device 13.
  • the refrigerant that has flowed into the indoor unit heat exchanger 51 is heat-exchanged with the air supplied by the indoor unit blower 53 and becomes a high-temperature and high-pressure liquid refrigerant that flows out of the indoor unit heat exchanger 51.
  • the refrigerant radiates heat to the air, thereby heating the room.
  • the high-temperature and high-pressure liquid refrigerant that has flowed out of the indoor unit heat exchanger 51 becomes a low-temperature and low-pressure liquid refrigerant or a two-phase refrigerant by the expansion device 52 provided in each indoor unit 50, and enters the outdoor unit heat exchanger 14 of the outdoor unit 10. Inflow.
  • the refrigerant that has flowed into the outdoor unit heat exchanger 14 is heat-exchanged with the air supplied by the outdoor unit blower 15, and becomes a low-temperature and low-pressure gas refrigerant that flows out of the outdoor unit heat exchanger 14.
  • the refrigerant that has flowed out of the outdoor unit heat exchanger 14 is again sucked into the compressor 11 via the flow path switching device 13 and the accumulator 16. Thereafter, the above cycle is repeated.
  • FIG. 2 is a block diagram showing a schematic configuration of the air conditioning system according to the embodiment of the present invention.
  • the air conditioning system 100 includes one or a plurality of the air conditioners 1 described above, a centralized management controller 80, and the like.
  • the centralized management controller 80 is a control device that manages a plurality of air conditioners 1.
  • three air conditioners 1 air conditioner 1A, air conditioner 1B, and air conditioner 1C
  • each including two indoor units 50 and one outdoor unit 10 are converted into one centralized management controller.
  • the number of connected air conditioners 1 and indoor units 50 is not particularly limited to this.
  • a plurality of air conditioners 1 are connected to the central control controller 80 so that they can communicate with each other by communication wiring or wirelessly.
  • a plurality of control devices 70 (a control device 70a, a control device 70b, and a control device 70c) are connected to the central management controller 80, and the central management controller 80 is connected to the plurality of outdoor units 10 ( Information is acquired from the outdoor unit 10a, outdoor unit 10b, outdoor unit 10c) and a plurality of indoor units 50 (indoor unit 50a, indoor unit 50b, indoor unit 50c, indoor unit 50d, indoor unit 50e, indoor unit 50f) and managed. is doing.
  • the centralized management controller 80 can transmit the operation command regarding control of the air conditioner 1 to the control apparatus 70 in an emergency, and can make an operation command carry out with priority.
  • the control device 70 a includes a power failure determination unit 71 and an operation control unit 72.
  • the power failure determination unit 71 detects a power failure of the regular power supply.
  • the power failure determination unit 71 is configured to constantly monitor the input power from the regular power source and detect a power failure by detecting a phase failure of the input power.
  • the power failure determination unit 71 transmits a power failure signal to the centralized management controller 80 when detecting a power failure of the regular power supply.
  • the power failure determination part 71 transmits the reset signal which is a reset signal to the centralized management controller 80, when the input power supply from a regular power supply returns from a power failure.
  • the operation control unit 72 controls each actuator of the air conditioner 1A based on information input from the remote controller, information acquired from the sensor group 60, and the like.
  • the operation control unit 72 switches the drive frequency of the compressor 11, the switching of the flow path switching device 13, the rotation speed of the outdoor unit blower 15, the opening degree of the expansion device 52 of each indoor unit 50, and the rotation number of the indoor unit blower 53. Control etc.
  • the operation control unit 72 transmits information on the indoor unit 50 and the outdoor unit 10 to the centralized management controller 80 and receives an operation command from the centralized management controller 80.
  • the operation control unit 72 transmits information related to the operation and air conditioning setting of each indoor unit 50, control information of the outdoor unit 10, and the like to the centralized management controller 80.
  • the operation control unit 72 controls the air conditioner 1A based on the received operation command.
  • the central management controller 80 has an information management unit 81, an operation unit 82, an operation command unit 83, and the like.
  • the information management unit 81 manages information on each outdoor unit 10 and each indoor unit 50 acquired via the control device 70a.
  • the information on the outdoor unit 10 includes, for example, control information of the actuator, and the information on the indoor unit 50 includes, for example, information such as an operation mode, an operation state such as operation or stop, and a set temperature.
  • the information management unit 81 can transmit such information collectively or individually. Further, the information management unit 81 manages the power information of the emergency power supply and the priority information for each air conditioner 1.
  • the power information includes, for example, set power Ps set in advance as power that can be supplied from the emergency power supply to the air conditioning system 100, the amount of power that can be allocated to the air conditioning system 100, and the like.
  • a priority is a priority which continues a driving
  • the priority may be set in advance from the operation unit 82 or the like at the time of installation or the like, or set by the operation command unit 83 based on operation information or the like during operation of each air conditioner 1. May be.
  • the operation unit 82 is input with commands or settings by an administrator or the like of the air conditioning system 100, and includes, for example, a touch panel having a liquid crystal screen or a display unit and a keyboard.
  • the input setting is reflected in the information management unit 81, and the input command is executed by the operation command unit 83 as necessary.
  • the operation command unit 83 manages the operation of the plurality of air conditioners 1 connected to the centralized management controller 80. In the normal operation mode, the operation of each air conditioner 1 is controlled by each control device 70 based on the input from the remote controller, the set information, and the information from the sensor group 60 and the like.
  • the operation command unit 83 receives the power failure signal and the return signal from the power failure determination unit 71, and switches the operation mode from the normal operation mode to the power limited operation mode when the normal power source has a power failure.
  • the power limited operation mode is an operation mode in which the power used by the connected air conditioner 1 is limited based on a preset set power Ps.
  • the operation command unit 83 transmits an operation command to the control device 70 as necessary, and causes the operation control unit 72 to control the air conditioner 1 based on the operation command. Specifically, the operation command unit 83 sends one or more air to the operation control unit 72 within a range in which the total power consumption Pu of the connected one or more air conditioners 1 is equal to or less than the set power Ps. The operation of the harmony machine 1 is controlled. The operation command unit 83 ends the power limited operation when receiving the return signal.
  • FIG. 4 is a flowchart showing the control of the air conditioning system according to the embodiment of the present invention. Hereinafter, control performed by the centralized management controller 80 and the control device 70 in the air conditioning system 100 will be described.
  • step ST101 When the air conditioning system 100 starts operation, normal operation is performed (step ST101).
  • the power failure determination unit 71 monitors the input power from the normal power source, and determines whether a power failure of the normal power source is detected during normal operation (step ST102).
  • step ST102 YES
  • a power failure signal is transmitted to the centralized management controller 80.
  • the operation command unit 83 starts the power limited operation (step ST103).
  • step ST102 NO
  • normal operation is continued (step ST101), and the power failure determination of step ST102 is repeated every predetermined time.
  • the operation command unit 83 limits the power used by the air conditioning system 100 to be within the power supplied by the emergency power source.
  • the operation command unit 83 performs power determination for determining whether the used power Pu is greater than the set power Ps (step ST104).
  • the operation command unit 83 transmits a request signal to notify each control device 70 of the power of the air conditioner 1.
  • the operation control unit 72 calculates the amount of power from the operating frequency of the compressor 11 and the rotational speed of the outdoor unit blower 15 and notifies the centralized management controller 80 of the calculated amount of power. To do.
  • the operation command unit 83 totals the notified power amounts of the air conditioners 1 and compares the used power Pu obtained by totaling with the set power Ps set in the information management unit 81.
  • step ST104: NO When it is determined in the power determination that the used power Pu is equal to or less than the set power Ps (step ST104: NO), the operation command unit 83 does not need to suppress the operation of the air conditioner 1, and thus the power limited operation (Step ST108) and normal operation is performed (step ST101). On the other hand, when it is determined that the used power Pu is greater than the set power Ps (step ST104: YES), the operation command unit 83 further determines whether there are a plurality of air conditioners 1 that are in operation. (Step ST105). Then, when only one air conditioner 1 is in operation (step ST105: NO), the operation command unit 83 starts the power limited operation during the single operation (step ST201).
  • the operation command unit 83 has the lowest priority among the plurality of air conditioners 1 in operation. Is stopped (step ST106). At this time, the operation command unit 83 refers to the priority of each air conditioner 1 stored in the information management unit 81, and issues an operation command to stop the operation of the air conditioner 1 for which the lowest priority is set. To the control device 70. Specifically, when priority “high”, “medium”, or “low” is set for the air conditioner 1A, the air conditioner 1B, and the air conditioner 1C, respectively, the priority “low” is set. An operation command for stopping the operation of the air conditioner 1C is transmitted. Then, the control device 70 stops the air conditioner 1C based on the operation command, and continues the operation of the air conditioner 1A and the air conditioner 1B.
  • step ST107 a power failure recovery determination is performed (step ST107).
  • the power failure determination unit 71 determines that the power failure has been restored when the input power from the utility power returns (step ST107: YES), and transmits a return signal to the centralized management controller 80.
  • Operation command unit 83 ends the power limited operation when a return signal is received from power failure determination unit 71 (step ST108). On the other hand, when the return signal is not transmitted from the power failure determination unit 71 (step ST107: NO), the operation command unit 83 performs the power determination of step ST104 again.
  • step ST104 the processing from step ST104 to step ST107 is repeated until the centralized management controller 80 receives a return signal or until it is determined in the power determination that the total used power Pu is equal to or less than the set power Ps.
  • the total used power Pu2 counted in the second power determination is smaller than the used power Pu1 at the previous power determination because the air conditioner 1C is stopped.
  • the air conditioner for which the second lowest priority is set in the second step ST106. 1B is stopped.
  • FIG. 5 is a flowchart showing the control of the power limiting operation during the single operation of the air conditioning system according to the embodiment of the present invention.
  • the power limiting operation during the single operation is to limit the power consumption of the air conditioner 1 during the operation so as to be equal to or less than the set power Ps.
  • the operation command unit 83 calculates the frequency Fs of the compressor 11 and the rotation speed Ns of the outdoor unit fan 15 when operating with the preset set power Ps. (Step ST202). Then, the operation command unit 83 sets the calculated frequency Fs as the upper limit frequency of the compressor 11 for the operating air conditioner 1 and sets the calculated rotation speed Ns as the upper limit rotation speed of the outdoor unit blower 15. (Step ST203). At this time, the operation command unit 83 reflects the set upper limit frequency and upper limit rotation number in the information management unit 81 and transmits the operation command to the control device 70 as an operation command.
  • the operation control unit 72 controls the compressor 11 and the outdoor unit blower 15 of the operating air conditioner 1 with the frequency Fs and the rotation speed Ns as upper limits based on the operation command.
  • a power failure recovery determination is performed (step ST204).
  • the power failure determination unit 71 determines that the power failure has been restored when the input power from the utility power returns (step ST204: YES), and transmits a return signal to the centralized management controller 80.
  • the operation command unit 83 ends the power limited operation when receiving a return signal from the power failure determination unit 71 (step ST205).
  • step ST204 NO
  • the power limited operation is continued based on the set upper limit frequency and upper limit rotation speed. Thereafter, the power failure recovery determination in step ST204 is repeated until the centralized management controller 80 receives a recovery signal.
  • the air conditioning system 100 operates by receiving power supply from the normal power supply during normal operation, and operates by receiving power supply from the emergency power supply during a power failure of the normal power supply.
  • the air conditioning system 100 including the air conditioner 1, an operation control unit 72 that controls the operation of one or a plurality of air conditioners 1, a power failure determination unit 71 that detects a power failure of the regular power supply, and a power failure determination unit 71.
  • the operation control unit 72 is configured such that when the power instruction operation is performed by the operation command unit 83, the total power use Pu of one or a plurality of air conditioners 1 is the upper limit power (setting Within an amount of force Ps) or less, and controls the operation of one or more of the air conditioner 1.
  • the overall power consumption is limited based on the preset upper limit power (set power Ps) at the time of a power failure of the utility power supply, but the operation control unit 72 controls the operation within the range of the upper limit power.
  • set power Ps the preset upper limit power
  • the air conditioning system 100 can be operated with the maximum air conditioning capability in the range of the supply power. Therefore, as compared with the suppression operation mode set as in the prior art, the degree of freedom of control when using the emergency power supply is increased, and the overall power usage Pu is limited to the upper limit power (set power Ps) or less. It is possible to avoid stopping the operation of the entire system. That is, the air conditioning system 100 can continue the operation commensurate with the set power Ps even when the supplied power is limited.
  • the power failure determination unit 71 detects a power failure when a phase failure of the regular power supply is detected.
  • the air conditioning system 100 can perform stable operation by performing maintenance or switching to an emergency power supply.
  • the air conditioning system 100 further includes a centralized management controller 80 that manages one or a plurality of air conditioners 1, and the operation command unit 83 is included in the centralized management controller 80.
  • the air conditioning system 100 can perform the power limited operation or transmit the operation command using the operation information of the one or more air conditioners 1 managed by the central management controller 80.
  • the operation command unit 83 is a case where a power failure is detected by the power failure determination unit 71, and when the total power use Pu of one or a plurality of air conditioners 1 is larger than the upper limit power (set power Ps), Implement power limited operation.
  • the air conditioning system 100 continues operation by limiting the total power consumption Pu when the power supply is insufficient during a power failure of the normal power supply, while the total power consumption Pu becomes the set power Ps. For example, a normal operation can be performed and a highly efficient operation can be performed.
  • the operation command unit 83 gives the operation control unit 72 a higher priority set among the plurality of operating air conditioners 1.
  • the low air conditioner for example, the air conditioner 1C
  • the air conditioning system 100 can continue the operation even in an emergency for an air conditioner (for example, the air conditioner 1A) to be prioritized.
  • Each of the one or more air conditioners 1 includes the compressor 11 and the outdoor unit blower 15, the operation control unit 72 controls the compressor 11 and the outdoor unit blower 15, and the operation command unit 83 includes power.
  • the frequency of the compressor 11 and the rotation of the outdoor fan 15 at the upper limit power (for example, the set power Ps).
  • the number is calculated, and the operation control unit 72 controls the compressor 11 and the outdoor unit blower 15 of the operating air conditioner 1 with the calculated frequency Fs and rotation speed Ns as upper limits.
  • the operation control unit 72 can arbitrarily control the compressor 11 and the outdoor unit blower 15 with the frequency Fs and the rotation speed Ns at the set power Ps as upper limits in the power limited operation. Therefore, compared with the suppression operation mode which operates at the compressor frequency and the rotation speed of the indoor unit blower set as in the prior art, the air conditioning system 100 is high within the set range even when the emergency power supply is used. Efficient air conditioning can be provided.
  • each of the plurality of air conditioners 1 includes the control device 70 and each of the central management devices manages the plurality of air conditioners.
  • the air conditioner 100 includes one air conditioner 1.
  • the control device 70 may have the function of the centralized controller 80.
  • the refrigeration cycle is not limited to the circuit configuration of FIG. 1.
  • the outdoor unit 10 may have a mechanism for switching the refrigerant flow for each indoor unit 50.
  • the central management controller 80 may be provided with a part or all of the functions of the control device 70, or the control device 70 may be provided with a part or all of the functions of the central management controller 80.
  • a configuration in which a power failure or power failure recovery is determined by the centralized management controller 80 instead of the control device 70 may be employed.
  • step ST104 the operation command unit 83 transmits a request signal to notify each control device 70 of the power used by the air conditioner 1.
  • the operation command unit 83 is stored in the information management unit 81.
  • the configuration may be such that the power consumption of each air conditioner 1 and the total power consumption Pu are calculated based on the latest operation information.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un système de climatisation comportant un ou plusieurs climatiseurs fonctionnant, en conditions normales, par réception d'une alimentation en courant en provenance d'une source de courant normale et fonctionnant, pendant une panne de courant de la source de courant normale, par réception d'une alimentation en provenance d'une source de courant d'urgence. Le système de climatisation comprend une unité de commande de fonctionnement destinée à commander le fonctionnement du ou des climatiseurs, une unité de détermination de panne de courant destinée à détecter une panne de courant de la source de courant normale, et une unité de commande de fonctionnement destinée à effectuer, lors d'une détection d'une panne de courant par l'unité de détermination de panne de courant, un fonctionnement en limitation de puissance dans lequel la puissance utilisée par le ou les climatiseurs est limitée en fonction d'une puissance limite supérieure prédéfinie ; et l'unité de commande de fonctionnement peut commander le fonctionnement du ou des climatiseurs de sorte que la puissance globale utilisée par le ou les climatiseurs ne dépasse pas la puissance limite supérieure lorsque le fonctionnement en limitation de puissance est effectuée par l'unité de commande de fonctionnement.
PCT/JP2017/007138 2017-02-24 2017-02-24 Système de climatisation WO2018154718A1 (fr)

Priority Applications (3)

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PCT/JP2017/007138 WO2018154718A1 (fr) 2017-02-24 2017-02-24 Système de climatisation
JP2019501038A JP6710313B2 (ja) 2017-02-24 2017-10-31 空気調和システム
PCT/JP2017/039385 WO2018154853A1 (fr) 2017-02-24 2017-10-31 Système de climatisation

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PCT/JP2017/007138 WO2018154718A1 (fr) 2017-02-24 2017-02-24 Système de climatisation

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WO2022038716A1 (fr) * 2020-08-19 2022-02-24 三菱電機株式会社 Système de gestion centralisé
JP7351752B2 (ja) 2020-01-17 2023-09-27 トヨタホーム株式会社 建物
JP7465725B2 (ja) 2020-05-27 2024-04-11 積水化学工業株式会社 空調システム

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JP6844731B2 (ja) * 2019-05-28 2021-03-17 ダイキン工業株式会社 空調システム

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JPH11325539A (ja) * 1998-05-14 1999-11-26 Matsushita Electric Ind Co Ltd 空気調和機のデマンド制御方法
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JP2007024431A (ja) * 2005-07-20 2007-02-01 Ntt Facilities Inc 空気調和システム及びその非常用電源給電時における運転方法
US20080058997A1 (en) * 2005-04-08 2008-03-06 Powersecure, Inc. System and method for interactive generator and building electric load control
JP2008209018A (ja) * 2007-02-23 2008-09-11 Mitsubishi Heavy Ind Ltd 大型冷凍機の制御装置およびその停電検出方法

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JPH11325539A (ja) * 1998-05-14 1999-11-26 Matsushita Electric Ind Co Ltd 空気調和機のデマンド制御方法
JP2002013778A (ja) * 2000-06-29 2002-01-18 Mitsubishi Heavy Ind Ltd 空調機の電力制御方法および装置、コンピュータが読取可能な記録媒体
US20080058997A1 (en) * 2005-04-08 2008-03-06 Powersecure, Inc. System and method for interactive generator and building electric load control
JP2007024431A (ja) * 2005-07-20 2007-02-01 Ntt Facilities Inc 空気調和システム及びその非常用電源給電時における運転方法
JP2008209018A (ja) * 2007-02-23 2008-09-11 Mitsubishi Heavy Ind Ltd 大型冷凍機の制御装置およびその停電検出方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7351752B2 (ja) 2020-01-17 2023-09-27 トヨタホーム株式会社 建物
JP7465725B2 (ja) 2020-05-27 2024-04-11 積水化学工業株式会社 空調システム
WO2022038716A1 (fr) * 2020-08-19 2022-02-24 三菱電機株式会社 Système de gestion centralisé

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JP6710313B2 (ja) 2020-06-17
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