CN117249516A - Control method and control device for air conditioning system, air conditioning system and storage medium - Google Patents

Control method and control device for air conditioning system, air conditioning system and storage medium Download PDF

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Publication number
CN117249516A
CN117249516A CN202210644576.6A CN202210644576A CN117249516A CN 117249516 A CN117249516 A CN 117249516A CN 202210644576 A CN202210644576 A CN 202210644576A CN 117249516 A CN117249516 A CN 117249516A
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China
Prior art keywords
slave
electronic expansion
expansion valve
communication bus
machine
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Application number
CN202210644576.6A
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Chinese (zh)
Inventor
玉维友
章文凯
黄永林
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GD Midea Air Conditioning Equipment Co Ltd
Foshan Shunde Midea Electric Science and Technology Co Ltd
Original Assignee
GD Midea Air Conditioning Equipment Co Ltd
Foshan Shunde Midea Electric Science and Technology Co Ltd
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Publication date
Application filed by GD Midea Air Conditioning Equipment Co Ltd, Foshan Shunde Midea Electric Science and Technology Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Priority to CN202210644576.6A priority Critical patent/CN117249516A/en
Publication of CN117249516A publication Critical patent/CN117249516A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention provides a control method, a control device, an air conditioner and a storage medium of an air conditioning system, wherein the method comprises the following steps: when detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer; and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system. According to the technical scheme provided by the embodiment of the invention, the target slave machine with the power failure fault can be determined by combining the communication fault and the power supply of the communication bus, and the electronic expansion valve of the target slave machine is closed by the host machine, so that the fault-free slave machine in the air conditioning system can maintain running, and the user experience is effectively improved.

Description

Control method and control device for air conditioning system, air conditioning system and storage medium
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a control method and device for an air conditioning system, and a storage medium.
Background
The multi-split air conditioning system is a common air conditioning system and is generally composed of an outer machine and a plurality of inner machines, an electronic expansion valve is arranged in a refrigerant pipeline between each inner machine and the outer machine, and each inner machine realizes accurate control of refrigerant flow by adjusting the opening degree of the electronic expansion valve, so that the refrigerating capacity or heating capacity requirement of each inner machine is met.
The electronic expansion valve is in an open state in the operation process of the internal machine, the internal machine and the external machine are independently powered, the electronic expansion valve cannot be closed after communication faults caused by power failure and the like occur to the internal machine, refrigerants continuously flow into the internal machine with faults through the electronic expansion valve, a fan of the internal machine with faults cannot be normally opened, heat exchange efficiency is poor, the refrigerants cannot undergo phase change, and normal operation of the compressor is seriously influenced after entering the compressor. In order to protect the safety of the multi-split system, the operation of the whole system is stopped as long as the power of the internal machine is lost, and the user experience of the non-fault internal machine is seriously affected.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a control method and a control device for an air conditioning system, the air conditioning system and a storage medium, which can close a corresponding electronic expansion valve after the power of an internal machine is lost, maintain normal operation of the internal machine without faults and improve user experience.
In a first aspect, an embodiment of the present invention provides a control method for an air conditioning system, where the air conditioning system includes a host and at least one slave, the host and the slave are communicatively connected through a communication bus, the host includes a host power source, the host power source is connected to the communication bus, the slave includes an electronic expansion valve, and the electronic expansion valve is disposed in a refrigerant pipeline between the slave and the host, and the control method for an air conditioning system is applied to the host, and includes:
When detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer;
and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system.
The control method of the air conditioning system has at least the following beneficial effects: when detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer; and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system. According to the technical scheme provided by the embodiment of the invention, the target slave machine with the power failure fault can be determined by combining the communication fault and the power supply of the communication bus, and the electronic expansion valve of the target slave machine is closed by the host machine, so that the fault-free slave machine in the air conditioning system can maintain running, and the user experience is effectively improved.
According to some embodiments of the invention, when it is detected that communication with at least one slave is in a failure state, the method comprises the steps of:
Determining at least one slave machine to be detected, wherein the slave machine to be detected is the slave machine which is set to be in an operating state;
transmitting a first polling signal to each slave to be detected through the communication bus;
acquiring a first response signal from the communication bus, wherein the first response signal is generated by the slave to be detected according to the first polling signal;
and when the number of the first response signals is smaller than the number of the first polling signals, determining that the communication with at least one slave to be detected is in a fault state.
According to some embodiments of the invention, the controlling the host power supply to supply power to the communication bus, determining the slave that resumes communication as a target slave, includes:
determining an abnormal slave machine, wherein the abnormal slave machine is the slave machine to be detected which does not feed back the first response signal;
controlling the host power supply to supply power to the abnormal slave computer through the communication bus, and sending a second polling signal to the abnormal slave computer through the communication bus;
and determining the abnormal slave machine which feeds back a second response signal through the communication bus as the target slave machine, wherein the second response signal is generated by the abnormal slave machine according to the second polling signal.
According to some embodiments of the invention, the slave further comprises a slave controller and a slave power supply, the slave controller being connected to the slave power supply and the communication bus respectively,
the controlling the host power supply to supply power to the abnormal slave computer through the communication bus, and sending a second polling signal to the abnormal slave computer through the communication bus includes:
controlling the host power supply to supply power to the slave power supply of the abnormal slave through the communication bus so that the slave power supply of the abnormal slave supplies power to the slave controller of the abnormal slave;
and sending the second polling signal to the slave controller of the abnormal slave through the communication bus.
According to some embodiments of the invention, the electronic expansion valve is electrically connected to the slave controller and the slave, respectively,
the controlling the electronic expansion valve of the target slave machine to close comprises the following steps:
and sending a reset signal to a slave controller of the target slave through the communication bus so as to enable the slave controller of the target slave to control the electronic expansion valve to be closed, wherein the electronic expansion valve is powered by the slave power supply.
According to some embodiments of the invention, the electronic expansion valve is connected to the communication bus, and the controlling the electronic expansion valve of the target slave machine to close includes:
and under the condition that the electronic expansion valve is powered through the communication bus, sending a reset signal to the electronic expansion valve of the target slave machine through the communication bus so as to control the electronic expansion valve of the target slave machine to be closed.
According to some embodiments of the invention, the number of the target slaves is at least 2, and the sending the reset signal to the electronic expansion valve of the target slave through the communication bus includes:
generating a parallel control signal for each target slave, wherein the parallel control signal carries the reset signal;
and sending the parallel control signals to the electronic expansion valve of the corresponding target slave machine through the communication bus.
According to some embodiments of the invention, after the controlling the electronic expansion valve of the target slave machine to close and maintain the current operation mode of the air conditioning system, the method further comprises:
determining a closing result of an electronic expansion valve of the target slave machine;
when the closing result represents that all the electronic expansion valves of the target slave machines are closed, generating a fault report aiming at the target slave machines;
Or when the closing result indicates that the electronic expansion valve of at least one target slave machine is not closed, controlling the air conditioning system to stop running.
According to some embodiments of the invention, the air conditioning system further comprises a compressor, and the determining the closing result of the electronic expansion valve of the target slave machine includes at least one of:
acquiring the exhaust temperature of the compressor, and determining the closing result of the electronic expansion valve according to the exhaust temperature;
or when a reset feedback signal fed back by the target slave machine through the communication bus is obtained, determining that the electronic expansion valve is successfully closed;
or determining the closing result of the target slave machine which does not feed back the reset feedback signal within a preset time period as closing failure.
In a second aspect, an embodiment of the present invention provides a control apparatus for an air conditioning system, including at least one control processor and a memory for communicatively connecting with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform the control method of the air conditioning system according to the first aspect.
The control device of the air conditioning system has at least the following beneficial effects: when detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer; and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system. According to the technical scheme provided by the embodiment of the invention, the target slave machine with the power failure fault can be determined by combining the communication fault and the power supply of the communication bus, and the electronic expansion valve of the target slave machine is closed by the host machine, so that the fault-free slave machine in the air conditioning system can maintain running, and the user experience is effectively improved.
In a third aspect, an embodiment of the present invention provides an air conditioner, including a control device of the air conditioning system according to the second aspect.
The air conditioner provided by the embodiment of the invention has at least the following beneficial effects: when detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer; and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system. According to the technical scheme provided by the embodiment of the invention, the target slave machine with the power failure fault can be determined by combining the communication fault and the power supply of the communication bus, and the electronic expansion valve of the target slave machine is closed by the host machine, so that the fault-free slave machine in the air conditioning system can maintain running, and the user experience is effectively improved.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the control method of the air conditioning system according to the first aspect.
The computer-readable storage medium according to the embodiment of the invention has at least the following advantageous effects: when detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer; and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system. According to the technical scheme provided by the embodiment of the invention, the target slave machine with the power failure fault can be determined by combining the communication fault and the power supply of the communication bus, and the electronic expansion valve of the target slave machine is closed by the host machine, so that the fault-free slave machine in the air conditioning system can maintain running, and the user experience is effectively improved.
Drawings
Fig. 1 is a circuit configuration diagram of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a refrigerant circuit of an air conditioning system according to another embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air conditioning system according to another embodiment of the present invention;
FIG. 4 is a flow chart of a first polling slave provided by another embodiment of the invention;
FIG. 5 is a flow chart of a secondary polling slave provided by another embodiment of the invention;
FIG. 6 is a flow chart of providing power to a slave machine over a communication bus in accordance with another embodiment of the present invention;
FIG. 7 is a flow chart of resetting an electronic expansion valve provided in another embodiment of the present invention;
FIG. 8 is a flow chart of resetting an electronic expansion valve provided in another embodiment of the present invention;
FIG. 9 is a flow chart of transmitting parallel reset signals provided by another embodiment of the present invention;
FIG. 10 is a flowchart of determining an operation mode of an air conditioning system according to a closing result of an electronic expansion valve according to another embodiment of the present invention;
FIG. 11 is a flow chart of determining the closing result of an electronic expansion valve according to another embodiment of the present invention;
FIG. 12 is a flow chart of a specific example provided by another embodiment of the present invention;
fig. 13 is a block diagram of a control device of an air conditioning system according to another embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
The multi-split air conditioning system belongs to a multi-split system and generally comprises an external machine and a plurality of internal machines, wherein the external machine and the internal machines need to establish a communication network for communication. The communication system of the multi-split system mainly uses wired communication, an external machine and an internal machine are connected through a communication bus, and interaction of various control signals is realized through the communication bus. And a refrigerant pipeline is further connected between the inner machine and the outer machine, heat exchange is realized by flowing of the refrigerant in the refrigerant pipeline in the refrigerating or heating process of the multi-split system, as shown in fig. 2, low-temperature refrigerant obtained by heat exchange of the outer machine is conveyed from the outer machine to the inner machine in the refrigerating process, and high-temperature refrigerant obtained by heat exchange of the indoor and outdoor heat exchangers is input to the outer machine to realize heat exchange. For different temperature demands, the required refrigerant flows are different, and in order to control the refrigerant flows, electronic expansion valves are usually respectively arranged between the refrigerant pipelines of each inner machine and each outer machine, and each inner machine independently controls the electronic expansion valve in the refrigerant pipeline of the inner machine. In the running process of the multi-split air conditioner system, once the internal machine is powered down, the controller of the internal machine cannot control the electronic expansion valve, the electronic expansion valve is in an open state, a refrigerant loop can flow through the failed internal machine, and the fan of the failed internal machine cannot be normally started due to the power failure of the failed internal machine, so that the heat exchange efficiency is poor, and the work of the compressor is seriously influenced. In order to solve the problem, a common method is to halt the operation of the multi-split system as long as one internal machine fails, and resume the operation of the multi-split system after the failed internal machine is repaired, but the user experience is poor for the user of the internal machine without failure.
Based on the above situation, the embodiment of the invention provides a control method, a control device, an air conditioner and a storage medium of an air conditioning system, wherein the control method of the air conditioning system comprises the following steps: when detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer; and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system. According to the technical scheme provided by the embodiment of the invention, the target slave machine with the power failure fault can be determined by combining the communication fault and the power supply of the communication bus, and the electronic expansion valve of the target slave machine is closed by the host machine, so that the fault-free slave machine in the air conditioning system can maintain running, and the user experience is effectively improved.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
As shown in fig. 1, fig. 1 is a schematic circuit diagram of an air conditioning system according to an embodiment of the present invention, where the air conditioning system includes a host 100 and at least one slave 300, the host 100 is communicatively connected to the slave 300 through a communication bus 200, the host includes a host power source, the host power source is connected to the communication bus 200, the slave 300 includes an electronic expansion valve 330, and the electronic expansion valve 330 is disposed in a refrigerant pipeline between the slave and the host.
It should be noted that, the host 100 may be an outdoor unit of an air conditioning system, the slave 300 may be an indoor unit of the air conditioning system, and the number of the slaves 300 may be adjusted according to the actual situation of the air conditioning system, for example, in the case where the air conditioning system is a multi-split system, a plurality of slaves 300 may be disposed, and the specific number of the slaves 300 is not limited too much in this embodiment.
It should be noted that, the communication bus 200 may be an RS485 bus, and the host 100 and the slave 300 may adopt an RS485 power carrier communication manner, and the transmission of the power supply and the communication signal is simultaneously realized through the communication bus 200, and the specific carrier transmission manner is a technology well known to the skilled person in this embodiment, which is not repeated here.
It should be noted that, the host power supply of the host 100 may be a Direct Current (DC) power supply, for example, the host DCDC power supply 140 shown in fig. 1, and the host DCDC power supply 140 may be connected to the switching power supply 150, and the DC power supply is provided through the switching power supply 150. It should be noted that, the host DCDC power supply 140 may supply power to the communication bus 200 through the first inductor 160, and the internal unit 300 is a power receiving unit, so as to implement that the host DCDC power supply 140 supplies power to the internal unit 300 through the communication bus 200.
It should be noted that, the host 100 may be provided with a host micro control unit (Microcontroller Unit, MCU) 110 as a controller, where the host MCU110 is connected to the communication bus 200 through the first communication interface 120 and the first capacitor 130, the communication signal generated by the host MCU110 is coupled to the communication bus 200 through the first capacitor 130 to implement transmission, the communication signal is usually an ac signal, the current of the host DCDC power supply 140 is a dc current, the dc current can be isolated through the first capacitor 130, and the communication signal can be prevented from being input to the host DCDC power supply 140 through the first inductor 130, thereby avoiding interference between the current and the communication signal.
It should be noted that, in the same manner as the host 100, the slave 300 may be provided with a second inductor 380 to obtain a dc power from the communication bus 200, and may further be provided with a rectifying unit 350 to rectify the obtained current, so that a module for processing the dc current is increased or decreased according to the timing requirement by a person skilled in the art, which is not limited herein. It should be noted that the second capacitor 370 and the second communication interface 360 may also be disposed in the slave unit 300, and their functions are similar to those of the first capacitor 130 and the first communication interface 120 of the host unit 100, and the description thereof will not be repeated here.
It should be noted that, in order to realize control of the electronic expansion valve 330, the slave 300 may further be provided with an electronic expansion valve driving module 320, where the electronic expansion valve driving module 320 may be connected to the slave MCU310, so as to respond to control of the slave MCU310, and when the slave 300 is not provided with the slave MCU310, the electronic expansion valve driving module 320 may be directly connected to the communication bus 200, and the host MCU110 directly sends a reset instruction to the electronic expansion valve driving module 320, thereby realizing resetting of the electronic expansion valve 330.
Based on the air conditioning system shown in fig. 1, referring to fig. 3, an embodiment of the present invention provides a control method of an air conditioning system, which is applied to a host of the air conditioning system, including, but not limited to, the following steps:
step S310, when detecting that the communication with at least one slave is in a fault state, controlling a host power supply to supply power to a communication bus, and determining the slave which resumes the communication as a target slave;
in step S320, the electronic expansion valve of the control target slave is closed, and the current operation mode of the air conditioning system is maintained.
It should be noted that, in the operation process of the air conditioning system, the internal unit has a communication fault, which can cause that the internal unit cannot interact with control information, so as to affect the normal operation of the air conditioning system, the communication fault can be caused by various reasons, such as disconnection of a communication bus, failure of a communication port of the master unit or the slave unit, failure of an MCU of the slave unit, power failure of the slave unit, and the like.
The method for detecting the communication state of the slave by the master may also be a polling method or another method capable of forming communication feedback, and the specific method for detecting the fault is not limited too much in this embodiment.
It should be noted that, after determining that the slave has a communication failure, the power is supplied to the communication bus through the power supply of the master, and the power can be transmitted to the slave through the communication bus, so as to determine the failure type of the slave, for example, when the communication failure of the slave is a hardware failure such as a line failure or a device failure, even if the slave is supplied with power, the communication cannot be recovered due to the hardware failure, only the air conditioning system can be controlled to stop and report the failure, and the scenario of the hardware failure is not in the range discussed in the embodiment; for another example, after the slave is powered through the communication bus, the slave can resume power supply, so that communication with the host is resumed, it can be determined that the communication failure of the slave is caused by power failure, the slave is determined as a target slave, and the electronic expansion valve which needs to be closed is controlled to be closed through the host, so that the fault-free slave can maintain normal operation.
It should be noted that, in the circuit structure shown in fig. 1, the host power supply is a DCDC power supply enabled by the host MCU, after the host MCU determines the target slaves, the common mode voltage of the host DCDC power supply may be determined according to the number of the target slaves, the more the number of the target slaves is, the farther the distance between the host and the target slaves is, the larger the common mode voltage is, and those skilled in the art know how to adjust the power output voltage to ensure that the target slaves can obtain enough power recovery communication, which will not be described herein.
It should be noted that, as shown in fig. 1, a slave unit MCU and a load are not provided with a switching power supply, the slave unit MCU and the load can perform voltage-stabilized power supply through a slave unit DCDC power supply, and the slave unit DCDC power supply obtains power from a communication bus of carrier communication through an inductor, so that power supply is recovered after power failure, a target slave unit with power failure can be determined from an abnormal slave unit through two steps of communication state detection and communication bus power supply, and further a reset instruction is sent through a host unit in a state of power supply of the communication bus, and an electronic expansion valve of the target slave unit is controlled to be closed, so that an air conditioning system can maintain operation and no influence is caused on a compressor.
In addition, referring to fig. 4, in an embodiment, step S310 of the embodiment shown in fig. 3 further includes the following steps:
step S410, determining at least one slave to be detected, wherein the slave to be detected is a slave set to be in an operating state;
step S420, a first polling signal is sent to each slave to be detected through a communication bus;
step S430, a first response signal is obtained from the communication bus, and the first response signal is generated by the slave to be detected according to the first polling signal;
in step S440, when the number of the first reply signals is smaller than the number of the first polling signals, it is determined that the communication with the at least one slave to be detected is in a failure state.
In the multi-split system, each slave is not necessarily in a refrigerating or heating state, and the electronic expansion valve of the slave is in a closed state when the slave is in a shutdown or standby state, and the compressor is not affected even if the power is lost, so that the slave set in an operating state can be determined as the slave to be detected before the communication state between the master and the slave is detected, and the accuracy of fault detection is improved.
It should be noted that, the host may determine the communication state of the slave to be detected through a polling manner, and send a first polling signal to each slave to be detected sequentially through the communication bus, where the slave to be detected responds to the host after receiving the polling signal, when the number of first response signals acquired by the host is consistent with the number of first polling signals, it may be determined that all the slaves are in a normal communication state, and when the number of first response signals acquired by the host is less than the number of first polling signals, it may be determined that the slave to be detected has a communication failure.
In addition, referring to fig. 5, in an embodiment, step S310 of the embodiment shown in fig. 3 further includes the following steps:
step S510, determining an abnormal slave machine, wherein the abnormal slave machine is a slave machine to be detected without feeding back a first response signal;
Step S520, controlling the power supply of the host computer to supply power to the abnormal slave computer through the communication bus, and sending a second polling signal to the abnormal slave computer through the communication bus;
in step S530, an abnormal slave that feeds back a second response signal through the communication bus is determined as the target slave, wherein the second response signal is generated by the abnormal slave according to the second polling signal.
It should be noted that, based on the description of the above embodiment, when the slave to be detected has a communication fault, the communication bus cannot receive the first response signal fed back by the slave to be detected, so that the host can determine the abnormal slave according to the feedback condition of the first response signal, then power is supplied to the abnormal slave through the communication bus, and if the abnormal slave can recover communication after power is taken through the communication bus, it can determine that the abnormal slave has a power failure fault.
It is noted that after the abnormal slave receives power, whether the abnormal slave resumes normal communication may be determined through a second polling, and the second polling signal may be sent to all the slaves, or may be sent only to the abnormal slave, and a specific mode may be selected according to the actual situation of the master MCU. Under the condition that the second polling signal is sent for all the slaves, the target slave can be determined according to the feedback condition of the two response signals of the slaves, for example, one slave does not respond to the first polling signal, but responds to the second polling signal, and the slave can be determined to be the target slave with power failure; in the case where the abnormal slave is determined based on the feedback condition of the first response signal and the second polling signal is transmitted only to the abnormal slave, since the abnormal slave fails to respond to the first polling signal, the abnormal slave to which the second response signal is fed back can be directly determined as the target slave. It is noted that when at least one abnormal slave fails to feed back the second response signal, it can be determined that the abnormal slave has a device failure, and the electronic expansion valve cannot be closed, so that the air conditioning system needs to be controlled to stop.
In addition, in one embodiment, the slave also comprises a slave controller and a slave power supply, the slave controller is respectively connected with the slave power supply and the communication bus,
referring to fig. 6, step S530 of the embodiment shown in fig. 5 further includes, but is not limited to, the following steps:
step S610, controlling a host power supply to supply power to a slave power supply of an abnormal slave through a communication bus so that the slave power supply of the abnormal slave supplies power to a slave controller of the abnormal slave;
in step S620, a second polling signal is sent to the slave controller of the abnormal slave through the communication bus.
It should be noted that, as shown in fig. 1, in the case that the internal machine is a slave machine, each slave machine is provided with a DCDC power supply and an MCU, in the normal operation process, since the slave machine is independently powered, the slave machine MCU can take power from the independent power supply and control the load, the independent power supply is not the same as the DCDC power supply of the slave machine, and the subsequent description is not repeated. After the slave machine is powered down, the independent power supply cannot supply power to the slave machine, the slave machine MCU can disconnect communication with the electronic expansion valve due to power failure, after the slave machine is determined to be an abnormal slave machine, the slave machine DCDC power supply can be supplied to the slave machine MCU through the communication bus, and the slave machine MCU is used as a power receiving unit of the slave machine DCDC power supply, and under the condition of power, the slave machine MCU can recover communication with the master machine MCU, so that a structural basis is provided for the master machine MCU to control the closing of the electronic expansion valve.
In addition, in some embodiments, the electronic expansion valve is connected to the slave controller and the slave power supply, respectively, and referring to fig. 7, step S320 of the embodiment shown in fig. 3 further includes, but is not limited to, the following steps:
in step S710, a reset signal is sent to the slave controller of the target slave through the communication bus, so that the slave controller of the target slave controls the electronic expansion valve to close, wherein the electronic expansion valve is powered by the slave power supply.
It is worth noting that, the slave DCDC power supply is powered by the master DCDC power supply and the communication bus, and although the slave MCU can be powered to restore the communication with the master MCU, the voltage of the slave DCDC power supply cannot maintain the normal operation of the slave, so after the communication is restored, the abnormal slave needs to control the electronic expansion valve to be closed, so that the damage to the compressor is avoided.
It should be noted that, the reset state of the electronic expansion valve is a closed state, after the power supply of the target slave machine is restored, a reset signal of the electronic expansion valve may be sent to the target slave machine, and in the case that the slave machine controller is the slave machine MCU, the reset signal may be that the external machine MCU is coupled to the communication bus through a capacitor, and sent to the slave machine MCU through the communication bus, so that the slave machine MCU responds to the reset signal to control the electronic expansion valve to reset.
It is noted that after the slave MCU obtains the reset signal of the electronic expansion valve, a reset instruction may be sent to the electronic expansion valve driver to control the electronic expansion valve to reset, and since the target slave is in a power-down state, the electronic expansion valve and the electronic expansion valve driving module may also be powered by the slave DCDC power supply to ensure that the electronic expansion valve can be powered on to execute the instruction.
Additionally, in some embodiments, the electronic expansion valve is connected to the communication bus, and referring to fig. 8, step S320 of the embodiment shown in fig. 3 further includes, but is not limited to, the following steps:
in step S810, when power is supplied to the electronic expansion valve through the communication bus, a reset signal is sent to the electronic expansion valve of the target slave through the communication bus, so as to control the electronic expansion valve of the target slave to close.
It should be noted that, the target slave machine may not be provided with the slave machine MCU, in this case, the master machine MCU may be in communication connection with the electronic expansion valve driving module through the communication bus, the electronic expansion valve driving module and the electronic expansion valve are powered by the slave machine DCDC power supply, and the master machine MCU couples the reset signal to the communication bus and sends the reset signal to the electronic expansion valve driving module through the communication bus, so as to control the electronic expansion valve to reset.
In some embodiments, the number of target slaves is at least 2, and referring to fig. 9, step S810 of the embodiment shown in fig. 8 further includes, but is not limited to, the following steps:
step S910, generating a parallel control signal for each target slave, where the parallel control signal carries a reset signal;
in step S920, the parallel control signal is sent to the electronic expansion valve of the corresponding target slave machine through the communication bus.
When a plurality of target slaves are provided, since the slaves do not have a slave MCU, the master MCU needs to send a reset signal to the plurality of electronic expansion valves, and since the plurality of slaves are connected in parallel with the master, a serial control signal can be generated by the master MCU, a parallel control signal can be obtained by a serial-parallel technique, and the parallel control signal is input to the slaves at the corresponding positions through the communication bus, thereby controlling the slaves. For example, a reset signal is added to the serial signal according to the position of the target slave machine, so that the parallel control signal input to the target slave machine after serial conversion carries the reset signal, and the electronic expansion valve driving module responds to the reset signal to close the electronic expansion valve. It should be noted that the conversion of the serial control signal into the parallel control signal is a technique well known to those skilled in the art, and will not be described herein.
In some embodiments, referring to fig. 10, after step S320 of the embodiment shown in fig. 3 is performed, the following steps are further included, but are not limited to:
step S1010, determining a closing result of an electronic expansion valve of the target slave;
step S1020, when the closing result represents that the electronic expansion valves of all target slaves are closed, generating a fault report aiming at the target slaves;
or,
and step S1030, when the closing result indicates that the electronic expansion valve of at least one target slave machine is not closed, controlling the air conditioning system to stop running.
It should be noted that, the electronic expansion valve is a load device disposed in the refrigerant pipeline, and there is a possibility of failure, if the electronic expansion valve fails, even if the target slave machine can initiate a reset to the electronic expansion valve, the electronic expansion valve cannot normally execute a related instruction, that is, the electronic expansion valve cannot be closed, in this case, the operation of the air conditioning system needs to be stopped, so as to avoid damage to the compressor. Therefore, after the target slave machine acquires the reset signal and controls the electronic expansion valve to reset, the target slave machine can also determine whether the electronic expansion valve is closed or not, and feed back a closing result to the master machine, so that the target slave machine can maintain the operation of the air conditioning system after all the electronic expansion valves which need to be closed are closed, and stop the operation of the air conditioning system when the electronic expansion valve cannot be closed.
It should be noted that, the mode of determining whether the electronic expansion valve is closed by the target slave machine may be selected according to actual requirements, which is not limited in this embodiment.
After the electronic expansion valve to be closed is closed, a fault report of the target slave machine can be generated, for example, a fault code of the target slave machine is reported, so that maintenance personnel can maintain the target slave machine in time.
In addition, in an embodiment, the air conditioning system further includes a compressor, and referring to fig. 11, step S1010 of the embodiment shown in fig. 10 includes, but is not limited to, the following steps:
step S1110, obtaining the exhaust temperature of the compressor, and determining the closing result of the electronic expansion valve according to the exhaust temperature;
or,
step S1120, when a reset feedback signal fed back by the target slave machine through the communication bus is obtained, the electronic expansion valve is determined to be successfully closed;
or,
step S1130, determining that the shutdown result of the target slave machine, which does not feedback the reset feedback signal within the preset time period, is shutdown failure.
It should be noted that, in order to determine whether the electronic expansion valve is closed, it may be determined according to the exhaust temperature of the compressor, in the process of stable operation of the air conditioning system, the exhaust temperature of the compressor is generally stable, and after the plurality of electronic expansion valves are closed under the condition that the operation mode of the slave machine is not changed, the exhaust temperature of the compressor will be changed, so that whether the electronic expansion valve to be closed is closed can be determined through the exhaust temperature, and specific detection and judgment logic is a technology well known to those skilled in the art, and detailed description is not repeated herein.
Besides the exhaust temperature, since the electronic expansion valve is the load device of the target slave, after the operation is performed, a signal of completion of the execution is usually fed back to the target slave, for example, after the slave MCU of the target slave sends a reset signal to the electronic expansion valve, the electronic expansion valve performs the reset operation, after the instruction is performed, a reset feedback signal is sent to the slave MCU, and the slave MCU can determine whether the electronic expansion valve is completely closed according to the reset feedback signal and feed back the closing result to the host MCU for subsequent judgment.
It should be noted that, if the electronic expansion valve fails, after the slave MCU sends a reset instruction to the electronic expansion valve, the electronic expansion valve does not generate any response, so that a preset time period can be set according to the time requirement, when the slave MCU starts timing after sending the reset instruction, and when a reset feedback signal fed back by the electronic expansion valve is not received within the preset time period, it can be determined that a communication failure occurs between the electronic expansion valve and the slave MCU, or the electronic expansion valve fails, at this time, a closing result can be determined as a closing failure, and the closing result is fed back to the host MCU, so that the host MCU can stop the operation of the air conditioning system in time.
In order to better illustrate the technical solution of the present invention, a specific example is provided below in conjunction with the structure shown in fig. 1, in this example, the air conditioning system takes a multi-split air conditioning system as an example, the host is an external machine, the slave is at least two internal machines, and referring to fig. 12, this example includes, but is not limited to, the following steps:
step S1210, the external machine initiates polling to the internal machines, if all the polled internal machines answer in turn, step S1220 is executed, if all the polled internal machines do not answer, step S1270 is executed, and if part of the internal machines answer, step S1230 is executed;
step S1220, the internal machine executes the external machine instruction, and the air conditioning system has no abnormal internal machine and operates normally;
step S1230, the external device loads power on the bus, if the internal device is abnormal, the step S1240 is executed, otherwise the step S1270 is executed;
step S1240, the external machine controls the electronic expansion valve of the abnormal internal machine to reset, if the abnormal internal machine detects that the electronic expansion valve is closed, step S1250 is executed, otherwise, the electronic expansion valve is determined to be abnormal, and step S1270 is executed;
step S1250, the abnormal internal machine feeds back the closing of the electronic expansion valve to the external machine;
step S1260, the external machine judges that the valve of the abnormal internal machine is closed, other internal machines work normally, and step S1210 is executed again;
Step S1270, determining an abnormal internal machine failure, and stopping the system.
As shown in fig. 13, fig. 13 is a block diagram of a control device of an air conditioning system according to an embodiment of the present invention. The present invention also provides a control device 1300 of an air conditioning system, including: at least one control processor 1320 and a memory 1310 for communication connection with the at least one control processor 1320; the memory 1310 stores instructions executable by the at least one control processor 1320, the instructions being executable by the at least one control processor 1320 to enable the at least one control processor 1320 to perform a control method of an air conditioning system as described above.
The memory 1310, as a non-transitory computer readable storage medium, may be used to store a non-transitory software program and a non-transitory computer executable program, such as the control method of the air conditioning system in the above-described embodiment of the present invention. The control processor 1320 implements the control method of the air conditioning system in the above-described embodiment of the present invention by running a non-transitory software program and instructions stored in the memory 1310.
Memory 1310 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data and the like required to perform the control method of the air conditioning system in the above-described embodiment. In addition, memory 1310 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. It should be noted that the memory 1310 may alternatively include a memory remotely located from the control processor 1320, and these remote memories may be connected to the terminal through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The non-transitory software programs and instructions required to implement the control method of the air conditioning system in the above-described embodiments are stored in the memory, and when executed by the one or more processors, the control method of the air conditioning system in the above-described embodiments is performed, for example, the method steps S310 to S320 in fig. 3, the method steps S410 to S440 in fig. 4, the method steps S510 to S530 in fig. 5, the method steps S610 to S620 in fig. 6, the method step S710 in fig. 7, the method step S810 in fig. 8, the method steps S910 to S920 in fig. 9, the method steps S1010 to S1030 in fig. 10, the method steps S1110 to S1130 in fig. 11, and the method steps S1210 to S1270 in fig. 12 described above are performed.
The embodiment of the invention also provides an air conditioner, which comprises the control device 1500 of the air conditioning system in the embodiment.
The present invention also provides a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the control method of the air conditioning system in the above-described embodiments, for example, performing the method steps S310 to S320 in fig. 3, the method steps S410 to S440 in fig. 4, the method steps S510 to S530 in fig. 5, the method steps S610 to S620 in fig. 6, the method steps S710 in fig. 7, the method steps S810 in fig. 8, the method steps S910 to S920 in fig. 9, the method steps S1010 to S1030 in fig. 10, the method steps S1110 to S1130 in fig. 11, and the method steps S1210 to S0 in fig. 12, which are described above.
The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and may include any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and scope of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.

Claims (12)

1. The control method of the air conditioning system is characterized in that the air conditioning system comprises a host and at least one slave, the host is in communication connection with the slave through a communication bus, the host comprises a host power supply, the host power supply is connected with the communication bus, the slave comprises an electronic expansion valve, the electronic expansion valve is arranged in a refrigerant pipeline between the slave and the host, and the control method of the air conditioning system is applied to the host and comprises the following steps:
when detecting that the communication with at least one slave computer is in a fault state, controlling the host power supply to supply power to the communication bus, and determining the slave computer recovering the communication as a target slave computer;
and controlling the electronic expansion valve of the target slave machine to be closed, and maintaining the current operation mode of the air conditioning system.
2. The method of claim 1, wherein said step of, when communication with at least one of said slaves is detected as being in a failure state, comprises the steps of:
determining at least one slave machine to be detected, wherein the slave machine to be detected is the slave machine which is set to be in an operating state;
transmitting a first polling signal to each slave to be detected through the communication bus;
acquiring a first response signal from the communication bus, wherein the first response signal is generated by the slave to be detected according to the first polling signal;
and when the number of the first response signals is smaller than the number of the first polling signals, determining that the communication with at least one slave to be detected is in a fault state.
3. The method of claim 2, wherein said controlling said host power supply to power said communication bus to determine said slave that resumes communication as a target slave comprises:
determining an abnormal slave machine, wherein the abnormal slave machine is the slave machine to be detected which does not feed back the first response signal;
controlling the host power supply to supply power to the abnormal slave computer through the communication bus, and sending a second polling signal to the abnormal slave computer through the communication bus;
And determining the abnormal slave machine which feeds back a second response signal through the communication bus as the target slave machine, wherein the second response signal is generated by the abnormal slave machine according to the second polling signal.
4. The method of claim 3, wherein the slave further comprises a slave controller and a slave power source, the slave controller being coupled to the slave power source and the communication bus, respectively,
the controlling the host power supply to supply power to the abnormal slave computer through the communication bus, and sending a second polling signal to the abnormal slave computer through the communication bus includes:
controlling the host power supply to supply power to the slave power supply of the abnormal slave through the communication bus so that the slave power supply of the abnormal slave supplies power to the slave controller of the abnormal slave;
and sending the second polling signal to the slave controller of the abnormal slave through the communication bus.
5. The method of claim 4, wherein the electronic expansion valve is electrically connected to the slave controller and the slave, respectively,
the controlling the electronic expansion valve of the target slave machine to close comprises the following steps:
And sending a reset signal to a slave controller of the target slave through the communication bus so as to enable the slave controller of the target slave to control the electronic expansion valve to be closed, wherein the electronic expansion valve is powered by the slave power supply.
6. A method according to claim 3, wherein the electronic expansion valve is connected to the communication bus, and the controlling the electronic expansion valve of the target slave to close comprises:
and under the condition that the electronic expansion valve is powered through the communication bus, sending a reset signal to the electronic expansion valve of the target slave machine through the communication bus so as to control the electronic expansion valve of the target slave machine to be closed.
7. The method of claim 6, wherein the number of target slaves is at least 2, and wherein the sending the reset signal to the electronic expansion valve of the target slave via the communication bus comprises:
generating a parallel control signal for each target slave, wherein the parallel control signal carries the reset signal;
and sending the parallel control signals to the electronic expansion valve of the corresponding target slave machine through the communication bus.
8. The method of claim 1, wherein after said controlling the electronic expansion valve of the target slave machine to close and maintain the current mode of operation of the air conditioning system, the method further comprises:
determining a closing result of an electronic expansion valve of the target slave machine;
when the closing result represents that all the electronic expansion valves of the target slave machines are closed, generating a fault report aiming at the target slave machines;
or when the closing result indicates that the electronic expansion valve of at least one target slave machine is not closed, controlling the air conditioning system to stop running.
9. The method of claim 8, wherein the air conditioning system further comprises a compressor, and wherein the determining the closing result of the electronic expansion valve of the target slave comprises at least one of:
acquiring the exhaust temperature of the compressor, and determining the closing result of the electronic expansion valve according to the exhaust temperature;
or when a reset feedback signal fed back by the target slave machine through the communication bus is obtained, determining that the electronic expansion valve is successfully closed;
or determining the closing result of the target slave machine which does not feed back the reset feedback signal within a preset time period as closing failure.
10. A control device of an air conditioning system, comprising at least one control processor and a memory for communication connection with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform the control method of the air conditioning system of any of claims 1 to 9.
11. An air conditioning system comprising the control device of the air conditioning system according to claim 10.
12. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the control method of the air conditioning system according to any one of claims 1 to 9.
CN202210644576.6A 2022-06-09 2022-06-09 Control method and control device for air conditioning system, air conditioning system and storage medium Pending CN117249516A (en)

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