Control device and control method of air conditioning system, air conditioning system, air conditioning indoor unit

Abstract

This invention proposes a control device and method for an air conditioning system, an air conditioning system, and an indoor unit. The control device includes a master MCU, a slave MCU, a master power supply circuit, and a slave power supply circuit. The master power supply circuit includes a standby control power input terminal and a first controlled switch. The standby control power input terminal is connected to the carrier communication bus through the first controlled switch, and the master MCU is connected to the first controlled switch. The slave power supply circuit includes a slave power input terminal and a second controlled switch. The slave power input terminal supplies power to the slave MCU through the second controlled switch, and the second controlled switch obtains power from the carrier communication bus. According to the solution provided by the embodiment of this invention, the power control of the slave unit is achieved by controlling whether the carrier communication bus is powered by the first controlled switch, which enables the entire air conditioning system to be in a system-level ultra-low standby power consumption state, effectively saving energy.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a control device and control method for an air conditioning system, an air conditioning system, and an indoor unit of an air conditioner. Background Technology

[0002] Air conditioning systems are generally referred to as refrigeration systems consisting of outdoor units, indoor units, and wired controllers. Multi-split air conditioning systems typically consist of one outdoor unit and multiple indoor units, belonging to a one-to-many system. The outdoor and indoor units need to establish a communication network for communication. Currently, air conditioning systems mainly use wired communication, requiring dedicated communication cables as communication channels. Multi-split air conditioning systems communicate via a traditional RS-485 bus, with each node controlled separately. Conventional standby schemes only allow one indoor unit to enter standby mode at a time, while the outdoor unit needs to communicate with each indoor unit continuously, making simultaneous standby impossible and increasing system power consumption. Because the RS-485 bus is a dual-core bus, it can only communicate and not supply power; even if the nodes in the multi-split system are notified to automatically cut off power, they cannot be restored to power. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a control device and control method for an air conditioning system, an air conditioning system, and an indoor unit for an air conditioning system, which can achieve ultra-low standby power consumption at the system level.

[0004] In a first aspect, embodiments of the present invention provide a control device for an air conditioning system. The air conditioning system includes a host and at least one slave unit, which are connected via a carrier communication bus. The control device includes a host MCU, a slave MCU, a host power supply circuit, and a slave power supply circuit. The host power supply circuit includes a standby control power input terminal and a first controlled switch. The standby control power input terminal is connected to the carrier communication bus via the first controlled switch, and the host MCU is connected to the first controlled switch. The slave power supply circuit includes a slave power input terminal and a second controlled switch. The slave power input terminal supplies power to the slave MCU via the second controlled switch, and the second controlled switch obtains power from the carrier communication bus.

[0005] The control device for an air conditioning system provided according to an embodiment of the present invention has at least the following beneficial effects: the host MCU is used to output control signals to the first controlled switch, and the standby control power input terminal is used to supply power to the carrier communication bus. By connecting the first controlled switch to the standby control power input terminal and the carrier communication bus respectively, the standby control power input terminal can be controlled to supply power or stop supplying power to the carrier communication bus. Since the second controlled switch is connected to the carrier communication bus, it can obtain power from the carrier communication bus. The slave power input terminal is used to provide working power to the slave MCU or other loads. The second controlled switch is set between the slave power input terminal and the slave MCU, and can control the power supply of the slave. It can be understood that by controlling whether the carrier communication bus is loaded with power through the first controlled switch to realize the power control of the slave, the entire air conditioning system can be in a system-level ultra-low standby power consumption state, effectively saving energy.

[0006] In the control device of the above-mentioned air conditioning system, the slave power input terminal includes a live wire terminal and a neutral wire terminal, the second controlled switch is a relay, the live wire terminal is connected to the slave MCU through the normally open contact of the relay, and the carrier communication bus is connected to the coil of the relay.

[0007] The second controlled switch is controlled by the standby control power input terminal and is a normally open relay. The carrier communication bus is connected to the relay coil. When the first controlled switch connects the standby control power input terminal and the carrier communication bus, the carrier communication bus is energized, and the relay is energized. Since the slave MCU is connected to the live wire terminal through the normally open contact of the relay, and the slave MCU is also connected to the neutral wire terminal, when the relay is energized, the slave MCU and other load devices are energized, and the slave can be in normal working state. When the first controlled switch disconnects the standby control power input terminal and the carrier communication bus, the carrier communication bus has no load power, and the carrier communication bus voltage is lower than the relay's energizing voltage. The relay is in the open state, and the slave MCU and other load devices cannot receive power. At this time, the slave is in a power-off state, and the host is in a low-power standby state, thereby realizing that the entire air conditioning system is in a system-level ultra-low standby power consumption state.

[0008] In the control device of the aforementioned air conditioning system, the first controlled switch is a MOSFET, an IGBT, or a transistor.

[0009] It should be noted that the first controlled switch is a switching transistor, which, as an electronic switch, can control the on and off of the power supply. The first controlled switch can be a MOSFET, an IGBT, or a transistor.

[0010] In the control device of the above-mentioned air conditioning system, the main power supply circuit further includes a first inductor module, and the first controlled switch is connected to the carrier communication bus through the first inductor module.

[0011] It should be noted that the first inductor module includes multiple inductors, which can conduct DC signals. The standby control power input terminal is controlled by the first controlled switch and is powered to the carrier communication bus through the first inductor module. This enables the mutual isolation of communication and power supply, thereby enabling the carrier communication bus to transmit power supply and communication signals simultaneously.

[0012] The control device of the above-mentioned air conditioning system also includes a host communication circuit, which is connected to the host MCU and the carrier communication bus respectively, and the host communication circuit couples the communication signal to the carrier communication bus.

[0013] Because the carrier communication bus uses carrier communication, it can not only connect to other power supplies, but also achieve communication. Power and communication signals can be superimposed on the carrier communication bus for transmission. By connecting the host communication circuit to the host MCU and the carrier communication bus respectively, the host MCU sends control signals to the host communication circuit for signal conversion, and the host communication circuit transmits the communication signals to the carrier communication bus, thereby enabling the transmission of communication signals.

[0014] In the control device of the above-mentioned air conditioning system, the host communication circuit includes a first communication interface and a first capacitor module, and the first communication interface is connected to the carrier communication bus through the first capacitor module.

[0015] The first communication interface is connected to the host MCU and the first capacitor module respectively. The first capacitor module includes multiple capacitors and can conduct AC signals to transmit communication signals through the carrier communication bus. When the host MCU outputs a control signal to the first communication interface, the first communication interface outputs a communication signal and is coupled to the carrier communication bus through the first capacitor module, thereby realizing the transmission of communication signals.

[0016] In the control device of the above-mentioned air conditioning system, the slave power supply circuit further includes a second inductor module, and the second controlled switch obtains power from the carrier communication bus through the second inductor module.

[0017] It should be noted that the second inductor module includes multiple inductors and is capable of conducting DC signals. The second controlled switch is connected to the carrier communication bus through the second inductor module and can obtain power from the carrier communication bus.

[0018] In the control device of the aforementioned air conditioning system, the slave power supply circuit also includes a rectifier tube connected in parallel across the coil of the relay.

[0019] Since the carrier communication bus is a non-polarized two-wire bus, by connecting the rectifier tube to the carrier communication bus and then connecting it in parallel across the coil of the relay, the forward drive voltage can be stabilized, thereby ensuring the stable operation of the relay.

[0020] In the control device of the aforementioned air conditioning system, the slave power supply circuit also includes a Zener diode connected in parallel across the coil of the relay.

[0021] The relay's pre-amplifier stage uses a Zener diode for voltage regulation. By connecting the Zener diode in parallel across the relay coil, the relay voltage can be kept stable when the relay loses power, which helps extend the relay's service life and improve the reliability of the slave power supply circuit.

[0022] The control device of the above-mentioned air conditioning system also includes a slave communication circuit, which is connected to the slave MCU and the carrier communication bus respectively, and the slave communication circuit couples the communication signal to the carrier communication bus.

[0023] Because the carrier communication bus uses carrier communication, it can not only connect to other power supplies, but also communicate. It can simultaneously transmit power and communication signals superimposed on the carrier communication bus. By connecting the slave communication circuit to the slave MCU and the carrier communication bus respectively, the slave MCU sends control signals to the slave communication circuit for signal conversion. The slave communication circuit then transmits the communication signals to the carrier communication bus, thereby realizing the transmission of communication signals.

[0024] In the control device of the above-mentioned air conditioning system, the slave communication circuit includes a second communication interface and a second capacitor module. The second communication interface is connected to the carrier communication bus through the second capacitor module.

[0025] The second communication interface is connected to the slave MCU and the second capacitor module. The second capacitor module includes multiple capacitors and can conduct AC signals to transmit communication signals through the carrier communication bus. When the slave MCU outputs a control signal to the second communication interface, the second communication interface outputs a communication signal and couples it to the carrier communication bus through the second capacitor module, thereby enabling the transmission of communication signals.

[0026] In the control device of the above-mentioned air conditioning system, the slave unit is the outdoor unit of the air conditioner, and three live wire terminals are provided. Three second controlled switches are provided accordingly, and the three second controlled switches are connected in parallel.

[0027] It should be noted that if the slave unit is an outdoor unit of an air conditioner, and the outdoor unit is powered by three-phase electricity, it is equipped with three live wire terminals, which can be connected in parallel with three second controlled switches to achieve control of different load devices.

[0028] In the control device of the above-mentioned air conditioning system, the slave unit also includes a switching power supply, which is connected to the slave MCU and the second controlled switch respectively.

[0029] By placing the switching power supply between the slave MCU and the second controlled switch, when AC power enters the switching power supply through the slave power input terminal and the second controlled switch, it will be rectified into the required DC voltage to meet the power supply needs of the slave MCU and other slave loads.

[0030] The control device of the above-mentioned air conditioning system also includes a wired controller, which is connected to the host MCU and is used to trigger the host MCU to output a signal to the first controlled switch.

[0031] As the control terminal of the host, the wired controller can control the parameters of the host. By connecting the wired controller to the host MCU, the host MCU is triggered to output a signal to the first controlled switch, thereby triggering the air conditioning system to enter the system-level ultra-low standby power consumption state.

[0032] In a second aspect, embodiments of the present invention provide a control method for an air conditioning system, the air conditioning system including the control device described in the first aspect embodiment above, the control method comprising:

[0033] Obtain a first control command, wherein the first control command indicates that the air conditioning system enters or exits standby mode;

[0034] In response to the first control command, the first controlled switch is controlled to be turned on or off, so that the standby control power input terminal is powered on or stopped from supplying power to the carrier communication bus.

[0035] The control method for an air conditioning system provided by the embodiments of the present invention has at least the following beneficial effects: when a trigger command, i.e. a first control command, is received, indicating that the air conditioning system enters or exits the standby mode, the first controlled switch is controlled to open or close, i.e., the first controlled switch is controlled to connect or disconnect the standby control power input terminal and the carrier communication bus, thereby enabling the standby control power input terminal to supply power or stop supplying power to the carrier communication bus. By controlling whether the carrier communication bus has a loaded power supply through the first controlled switch, the power supply control of the slave unit can be realized, and the entire air conditioning system can be in a system-level ultra-low standby power consumption state.

[0036] In the control method of the above-mentioned air conditioning system, controlling the on / off state of the first controlled switch includes:

[0037] If the first control command indicates that the air conditioning system has entered standby mode, a second control command is sent to the slave unit to cause the slave unit to perform standby preparation work.

[0038] Receive a third control command from the slave device, the third control command indicating that standby preparation has been completed;

[0039] In response to the third control command, the first controlled switch is turned off.

[0040] If the first control command indicates that the air conditioning system is entering standby mode, the host sends a second control command to the slave to instruct the slave to perform standby preparation work. Upon receiving the second control command, the slave will enter the preparation work, such as closing the solenoid valve. After completing the standby preparation work, it will send feedback to the host to inform the host that it is ready. Upon receiving the third control command from the slave, the host confirms that all slaves have completed standby preparation, then controls the first controlled switch to turn off, the standby control power input terminal to stop supplying power to the carrier communication bus, the second controlled switch to open, and controls the slaves to power off. The host itself enters a low-power standby mode. The entire air conditioning system can keep only the host in low-power standby mode, waiting for the user to wake it up, while the slaves are all in a power-off state, thus achieving ultra-low standby power consumption at the system level.

[0041] In the control method of the above-mentioned air conditioning system, the control of the first controlled switch to be on or off includes:

[0042] If the first control command indicates that the air conditioning system has exited standby mode, the first controlled switch is connected.

[0043] If the first control command indicates that the air conditioner exits standby mode, the host controls the first controlled switch to turn on, and the standby control power input terminal supplies power to the carrier communication bus. The second controlled switch is turned on, and the standby control power input terminal supplies power to the slave MCU and other loads through the second controlled switch. Both the host and slave are in normal working condition.

[0044] Thirdly, embodiments of the present invention provide an air conditioning system, including the control device described in the first aspect of the embodiments above.

[0045] The air conditioning system provided by the embodiments of the present invention has at least the following beneficial effects: the host MCU is used to output control signals to the first controlled switch, and the standby control power input terminal is used to supply power to the carrier communication bus. By connecting the first controlled switch to the standby control power input terminal and the carrier communication bus respectively, the standby control power input terminal can be controlled to supply power or stop supplying power to the carrier communication bus. Since the second controlled switch is connected to the carrier communication bus, it can obtain power from the carrier communication bus. The slave power input terminal is used to provide working power to the slave MCU or other loads. The second controlled switch is set between the slave power input terminal and the slave MCU, and can control the power supply of the slave. It can be understood that by controlling whether the carrier communication bus is loaded with power through the first controlled switch to realize the power control of the slave, the entire air conditioning system can be in a system-level ultra-low standby power consumption state, effectively saving energy.

[0046] Fourthly, embodiments of the present invention provide an operation control device, including at least one control processor and a memory for communicatively connecting to the at least one control processor; the memory stores instructions executable by the at least one control processor, the instructions being executed by the at least one control processor to enable the at least one control processor to perform the control method as described in the second aspect of the embodiments above.

[0047] The operation control device provided by the embodiments of the present invention has at least the following beneficial effects: when a trigger command, i.e. a first control command, is received, indicating that the air conditioning system enters or exits the standby mode, the first controlled switch is controlled to open or close, i.e., the first controlled switch is controlled to connect or disconnect the standby control power input terminal and the carrier communication bus, thereby enabling the standby control power input terminal to supply power or stop supplying power to the carrier communication bus. By controlling whether the carrier communication bus has a loaded power supply through the first controlled switch, the power supply control of the slave unit can be realized, and the entire air conditioning system can be in a system-level ultra-low standby power consumption state.

[0048] Fifthly, embodiments of the present invention provide an indoor air conditioning unit, including the operation control device described in the fourth aspect of the embodiments above.

[0049] The air conditioner indoor unit provided by the embodiments of the present invention has at least the following beneficial effects: when a trigger command, i.e. a first control command, is received, indicating that the air conditioning system enters or exits the standby mode, the first controlled switch is controlled to open or close, i.e., the first controlled switch is controlled to connect or disconnect the standby control power input terminal and the carrier communication bus, thereby enabling the standby control power input terminal to supply power or stop supplying power to the carrier communication bus. By controlling whether the carrier communication bus has a loaded power supply through the first controlled switch, the power control of the slave unit can be realized, and the entire air conditioning system can be in a system-level ultra-low standby power consumption state.

[0050] In a sixth aspect, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the control method described in the second aspect of the embodiments above.

[0051] The computer-readable storage medium provided in the embodiments of the present invention has at least the following beneficial effects: when a trigger instruction, i.e. a first control instruction, is received, indicating that the air conditioning system enters or exits the standby mode, the first controlled switch is controlled to open or close, i.e., the first controlled switch is controlled to connect or disconnect the standby control power input terminal and the carrier communication bus, thereby enabling the standby control power input terminal to supply power or stop supplying power to the carrier communication bus. By controlling whether the carrier communication bus has a loaded power supply through the first controlled switch, the power supply control of the slave unit can be realized, and the entire air conditioning system can be in a system-level ultra-low standby power consumption state.

[0052] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0053] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0054] Figure 1 This is a schematic diagram of the connection relationship of the air conditioning system provided in Embodiment 1 of the present invention;

[0055] Figure 2 This is a schematic diagram of the connection relationship of the air conditioning system provided in Embodiment 2 of the present invention;

[0056] Figure 3 This is a schematic diagram of the structure of the control device for the air conditioning system provided in Embodiment 3 of the present invention;

[0057] Figure 4 This is a schematic diagram of the structure of the control device of the air conditioning system provided in Embodiment 4 of the present invention;

[0058] Figure 5 This is a flowchart of the control method for the air conditioning system provided in Embodiment 5 of the present invention;

[0059] Figure 6 This is a flowchart of the control method for the air conditioning system provided in Embodiment Six of the present invention;

[0060] Figure 7 This is a flowchart of the control method for the air conditioning system provided in Embodiment 7 of the present invention;

[0061] Figure 8 This is a flowchart of the control method for the air conditioning system provided in Embodiment 8 of the present invention;

[0062] Figure 9 This is a schematic diagram of the operation control device provided in Embodiment 9 of the present invention. Detailed Implementation

[0063] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0064] In the description of the embodiments of the present invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, while "above," "below," "within," etc. are understood to include the number itself. "At least one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items. If "first," "second," etc., are used in the description, they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0065] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this invention should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this invention in conjunction with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0066] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0067] In related technologies, multi-split air conditioning systems communicate via a traditional 485 bus, with each node controlled separately. Conventional standby schemes allow only one indoor unit to enter standby mode, while the outdoor unit needs to communicate with each indoor unit at all times and cannot participate in standby simultaneously, leading to increased power consumption of the entire air conditioning system. Furthermore, since the 485 bus can only communicate and not supply power, even if the nodes of the multi-split system are individually notified to cut off power, they cannot be restored to power, making it difficult to achieve a low-power standby state for all nodes of the entire air conditioning system.

[0068] Based on the above, embodiments of the present invention provide a control device and control method for an air conditioning system, an air conditioning system, and an indoor unit of an air conditioner, which can realize that the entire air conditioning system is in a system-level ultra-low standby power consumption state, effectively saving energy.

[0069] For ease of understanding, the terms used in the embodiments of this invention are explained as follows:

[0070] Main unit: Specifically refers to one of the indoor units in this air conditioning system.

[0071] Slave unit: For indoor or outdoor units and other equipment in this air conditioning system, it is used to exchange data with the host and respond to the host's call.

[0072] Wired controller: Powered by the indoor unit, it serves as the control terminal for the indoor unit.

[0073] Carrier communication: In this air conditioning system, it specifically refers to the communication technology that simultaneously transmits power supply and communication signals.

[0074] Communication channel: In this air conditioning system, it specifically refers to the physical connection line between nodes.

[0075] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0076] refer to Figure 1 and Figure 2 The air conditioning system includes an outdoor unit and multiple indoor units, which are interconnected via a carrier communication bus 300. The communication between the outdoor and indoor units is high common-mode carrier communication. One indoor unit 1 is defined as the master unit 100, and the remaining indoor and outdoor units are defined as slave units 200. That is, the air conditioning system has one master unit 100 and multiple slave units 200. The control device of the air conditioning system in this embodiment is applicable to multi-split air conditioning systems, but is not limited to multi-split air conditioning systems; it is also applicable to single-split air conditioning systems. For example, the air conditioning system can have one master unit 100 and one slave unit 200. It should be noted that the number of slave units 200 is determined by the cooling demand of the air conditioning system, and this embodiment does not impose specific limitations.

[0077] It should be noted that, in order to save energy, air conditioners are often equipped with a low-power mode. When the indoor unit enters standby mode, it waits for the user to wake it up before it can resume working.

[0078] like Figure 3 As shown, an embodiment of the first aspect of the present invention provides a control device for an air conditioning system. The air conditioning system includes a host 100 and at least one slave 200. The host 100 and the slave 200 are connected via a carrier communication bus 300. The control device includes a host MCU 400, a slave MCU 500, a host power supply circuit 600, and a slave power supply circuit 700. The host power supply circuit 600 includes a standby control power input terminal 610 and a first controlled switch 620. The standby control power input terminal 610 is connected to the carrier communication bus 300 via the first controlled switch 620. The host MCU 400 is connected to the first controlled switch 620. The slave power supply circuit 700 includes a slave power input terminal 710 and a second controlled switch 720. The slave power input terminal 710 supplies power to the slave MCU 500 via the second controlled switch 720. The second controlled switch 720 obtains power from the carrier communication bus 300.

[0079] The control device for the air conditioning system provided in the first aspect embodiment above includes a host MCU 400 for outputting control signals to a first controlled switch 620, and a standby control power input terminal 610 for supplying power to the carrier communication bus 300. By connecting the first controlled switch 620 to the standby control power input terminal 610 and the carrier communication bus 300 respectively, the standby control power input terminal 610 can be controlled to supply power or stop supplying power to the carrier communication bus 300. Since the second controlled switch 720 is connected to the carrier communication bus 300, it can obtain power from the carrier communication bus 300. The slave power input terminal 710 is used to provide working power to the slave MCU 500 or other loads. The second controlled switch 720 is located between the slave power input terminal 710 and the slave MCU 500 and can control the power supply of the slave 200. It can be understood that by controlling whether the carrier communication bus 300 is loaded with power through the first controlled switch 620, the power supply control of the slave 200 can be realized, enabling the entire air conditioning system to be in a system-level ultra-low standby power consumption state, effectively saving energy.

[0080] It should be noted that the host power supply circuit 600 includes a standby control power supply, which is a DC power supply. The standby control power supply input terminal 610 is connected to the first controlled switch 620, which controls the supply of power to the carrier communication bus 300. The second controlled switch 720 draws power from the carrier communication bus 300. It can be understood that the standby control power supply input terminal 610 and the first controlled switch 620 of the host 100 constitute a power control unit, and the second controlled switch 720 of the slave 200 constitutes a controlled power unit. The host 100 can control whether the carrier communication bus 300 is powered through the power control unit, thereby determining whether the second controlled switch 720 of the slave 200 is turned on. The power supply status of the slave 200 can be controlled based on the on / off status of the second controlled switch 720. For example, when the first controlled switch 620 connects the standby control power input terminal 610 and the carrier communication bus 300, the standby control power input terminal 610 can be powered normally, that is, the carrier communication bus 300 is powered. The second controlled switch 720 obtains power from the carrier communication bus 300 and turns on the slave power input terminal 710, so that the slave MCU 500 and other loads obtain working power, thereby enabling the slave 200 to be in a normal working state. When the first controlled switch 620 cuts off the standby control power input terminal 610 and the carrier communication bus 300, the standby control power input terminal 610 stops supplying power, that is, the carrier communication bus 300 is not powered. The second controlled switch 720 disconnects and cuts off the slave power input terminal 710, thereby controlling the slave MCU 500 and other loads to power down, and the slave 200 is in a power-off state.

[0081] Understandably, the power supply voltage at the standby control power input terminal 610 is determined by the scale of the air conditioning system. More nodes and greater distances allow for a higher power supply voltage, thus enabling stable driving of all subsequent second-controlled switches 720. Similarly, the power supply current of the first-controlled switch 620 is also determined by the scale of the air conditioning system; more nodes require a larger output current to drive all subsequent second-controlled switches 720. Setting appropriate power supply voltages and selecting suitable first-controlled switches 620 based on the number of slave devices 200 and communication distance helps improve the stability and reliability of the power supply.

[0082] It should be noted that the control device of the air conditioning system in this embodiment of the invention utilizes the RS485 carrier communication mechanism to control the power supply of other nodes in the air conditioning system by controlling whether the carrier communication bus 300 is powered. The carrier communication bus 300 is composed of twisted pair cables and has an outer shielding layer as a ground wire. By using differential transmission, it has the ability to resist common-mode interference.

[0083] The host MCU400 is the controller inside the host 100. By connecting the host MCU400 to the first controlled switch 620, the first controlled switch 620 is the controlled object of the host MCU400. The host MCU400 outputs control signals to centrally control whether the standby control power input terminal 610 is powered to the carrier communication bus 300. The slave MCU500 is the controller inside the slave 200. The slave MCU500 can be combined with the corresponding drive circuit to form a driver to drive the load. For example, the load may include devices such as compressors, fans, and electronic expansion valves.

[0084] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the slave power input terminal 710 includes a live wire terminal 711 and a neutral wire terminal 712. The second controlled switch 720 is a relay. The live wire terminal 711 is connected to the slave MCU 500 through the normally open contact of the relay, and the carrier communication bus 300 is connected to the coil of the relay.

[0085] The second controlled switch 720 is controlled by the standby control power input terminal 610 and is a normally open relay. The carrier communication bus 300 is connected to the relay coil. When the first controlled switch 620 connects the standby control power input terminal 610 and the carrier communication bus 300, the carrier communication bus 300 is energized, and the relay is energized. Since the slave MCU 500 is connected to the live wire terminal 711 through the normally open contact of the relay, and simultaneously connected to the neutral wire terminal 712, when the relay is energized, the slave MCU 500 and other load devices are energized. When the slave unit 200 is in normal working condition, and the first controlled switch 620 cuts off the standby control power input terminal 610 and the carrier communication bus 300, the carrier communication bus 300 has no load power, the voltage of the carrier communication bus 300 is lower than the relay's pull-in voltage, the relay is in the open state, the slave MCU 500 and other load devices cannot receive power, at this time the slave unit 200 is in a power-off state, the host unit 100 is in a low-power standby state, thus realizing the entire air conditioning system in a system-level ultra-low standby power consumption state.

[0086] It should be noted that the second controlled switch 720 can also be a single-pole double-throw relay.

[0087] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the first controlled switch 620 is a MOSFET, an IGBT, or a transistor.

[0088] It should be noted that the first controlled switch 620 is a switching transistor, which, as an electronic switch, can control the on / off state of the power supply. The first controlled switch 620 can be a MOSFET, IGBT, or transistor. In one embodiment, the first controlled switch 620 is a MOSFET. The control terminal of the MOSFET is connected to the host MCU 400, the first switch pin is connected to the standby control power input terminal 610, and the second switch pin is connected to the carrier communication bus 300. By sending control signals through the host MCU 400, the first controlled switch 620 can connect or disconnect the standby control power input terminal 610 and the carrier communication bus 300. Thus, the second controlled switch 720, which draws power from the carrier communication bus 300, can control the power supply of the slave device 200 to switch between the working state and the power-off state.

[0089] It should be noted that the first controlled switch 620 can also be a relay, which can also connect or disconnect the standby control power input terminal 610 and the carrier communication bus 300.

[0090] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the main unit power supply circuit 600 also includes a first inductor module 630, and the first controlled switch 620 is connected to the carrier communication bus 300 through the first inductor module 630.

[0091] It should be noted that the first inductor module 630 includes multiple inductors and can conduct DC signals. The standby control power input terminal 610 is controlled by the first controlled switch 620 and is powered to the carrier communication bus 300 through the first inductor module 630. This enables the mutual isolation of communication and power supply, thereby enabling the carrier communication bus 300 to transmit power supply and communication signals simultaneously.

[0092] like Figure 4 As shown, the control device of the above-mentioned air conditioning system also includes a host communication circuit 800, which is connected to the host MCU 400 and the carrier communication bus 300 respectively. The host communication circuit 800 couples the communication signal to the carrier communication bus 300.

[0093] Since the carrier communication bus 300 uses carrier communication, it can not only connect to other power supplies but also communicate. Power and communication signals can be superimposed on the carrier communication bus 300 for transmission. By connecting the host communication circuit 800 to the host MCU 400 and the carrier communication bus 300 respectively, the host MCU 400 sends control signals to the host communication circuit 800 for signal conversion, and the host communication circuit 800 transmits the communication signals to the carrier communication bus 300, thereby enabling the transmission of communication signals.

[0094] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the host communication circuit 800 includes a first communication interface 810 and a first capacitor module 820. The first communication interface 810 is connected to the carrier communication bus 300 through the first capacitor module 820.

[0095] It should be noted that the first communication interface 810 is connected to the host MCU 400 and the first capacitor module 820 respectively. The first capacitor module 820 includes multiple capacitors and can conduct AC signals to transmit communication signals through the carrier communication bus 300. When the host MCU 400 outputs control signals to the first communication interface 810, the first communication interface 810 outputs communication signals and couples them to the carrier communication bus 300 through the first capacitor module 820, thereby realizing the transmission of communication signals.

[0096] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the slave power supply circuit 700 also includes a second inductor module 730, and the second controlled switch 720 obtains power from the carrier communication bus 300 through the second inductor module 730.

[0097] It should be noted that the second inductor module 730 includes multiple inductors and is capable of conducting DC signals. The second controlled switch 720 is connected to the carrier communication bus 300 through the second inductor module 730 and is able to obtain power from the carrier communication bus 300.

[0098] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the slave power supply circuit 700 also includes a rectifier tube 740 connected in parallel across the coil of the relay.

[0099] Since the carrier communication bus 300 is a non-polarized two-wire bus, by connecting the rectifier tube 740 to the carrier communication bus 300 and connecting it in parallel across the coil of the relay, the forward drive voltage can be stabilized, thereby ensuring the stable operation of the relay.

[0100] In the control device of the aforementioned air conditioning system, the slave power supply circuit 700 also includes a Zener diode 750 connected in parallel across the coil of the relay.

[0101] The relay's front-end uses a Zener diode 750 for voltage regulation. By connecting the Zener diode 750 in parallel across the relay coil, the relay voltage can be kept stable when the relay loses power, which helps extend the relay's service life and improves the reliability of the slave power supply circuit 700.

[0102] It should be noted that, unlike the above embodiment where the relay front stage uses a Zener diode 750 for voltage regulation, a DC-DC circuit can also be set to achieve the voltage regulation effect.

[0103] like Figure 4 As shown, the control device of the above-mentioned air conditioning system also includes a slave communication circuit 900, which is connected to the slave MCU 500 and the carrier communication bus 300 respectively. The slave communication circuit 900 couples the communication signal to the carrier communication bus 300.

[0104] Since the carrier communication bus 300 uses carrier communication, it can not only connect to other power supplies but also communicate. Power and communication signals can be superimposed on the carrier communication bus 300 for transmission simultaneously. By connecting the slave communication circuit 900 to the slave MCU 500 and the carrier communication bus 300 respectively, the slave MCU 500 sends control signals to the slave communication circuit 900 for signal conversion, and the slave communication circuit 900 transmits the communication signals to the carrier communication bus 300, thereby realizing the transmission of communication signals.

[0105] In one embodiment, the host communication circuit 800 and the slave communication circuit 900 form a communication channel through the carrier communication bus 300, which enables data interaction between the host 100 and the slave 200. The carrier communication bus 300 simultaneously enables the transmission of power supply and communication signals, which can reduce wiring and installation costs and simplify the control structure of the air conditioning system.

[0106] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the slave communication circuit 900 includes a second communication interface 910 and a second capacitor module 920. The second communication interface 910 is connected to the carrier communication bus 300 through the second capacitor module 920.

[0107] It should be noted that the second communication interface 910 is connected to the slave MCU 500 and the second capacitor module 920 respectively. The second capacitor module 920 includes multiple capacitors and can conduct AC signals to transmit communication signals through the carrier communication bus 300. When the slave MCU 500 outputs control signals to the second communication interface 910, the second communication interface 910 outputs communication signals and couples them to the carrier communication bus 300 through the second capacitor module 920, thereby realizing the transmission of communication signals.

[0108] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the slave unit 200 is the outdoor unit of the air conditioner, and three live wire terminals 711 are provided. Three second controlled switches 720 are provided accordingly, and the three second controlled switches 720 are connected in parallel.

[0109] It should be noted that if the slave unit 200 is an outdoor unit of an air conditioner, when the outdoor unit is three-phase power, it is equipped with three live wire terminals 711, namely L1, L2 and L3, which can be connected in parallel with three second controlled switches 720 to realize the control of different load devices.

[0110] like Figure 4 As shown, in the control device of the above-mentioned air conditioning system, the slave unit 200 also includes a switching power supply 210, which is connected to the slave MCU 500 and the second controlled switch 720 respectively.

[0111] By placing the switching power supply 210 between the slave MCU 500 and the second controlled switch 720, when AC power enters the switching power supply 210 through the slave power input terminal 710 and the second controlled switch 720, it will be rectified into the required DC voltage to meet the power supply requirements of the slave MCU 500 and other loads of the slave 200.

[0112] It should be noted that the switching power supply 210 may include components such as electrolytic capacitors, filters, and rectifier bridges. When selecting specific components, choosing those with high voltage ratings can prevent damage caused by excessive instantaneous voltage when the neutral and live connections are reversed.

[0113] like Figure 2 and Figure 3 As shown, the control device of the above-mentioned air conditioning system also includes a wired controller 1000, which is connected to the host MCU 400. The wired controller 1000 is used to trigger the host MCU 400 to output a signal to the first controlled switch 620.

[0114] It should be noted that the wired controller 1000 serves as the control terminal of the host 100, enabling parameter control of the host 100. The wired controller 1000 is a human-machine interface for users to input control parameters. When the wired controller 1000 is connected to the host MCU 400, the host MCU 400 is triggered to output a signal to the first controlled switch 620, thereby triggering the air conditioning system to enter the system-level ultra-low standby power consumption state.

[0115] In one embodiment, the wired controller 1 of the indoor unit 1 serves as the interaction entry point. The user sends instructions to the MCU of the indoor unit 1 through the wired controller 1 to control the first controlled switch 620 to connect or disconnect the standby control power input terminal 610 and the carrier communication bus 300, thereby controlling the standby control power input terminal 610 to supply power or stop supplying power to the carrier communication bus 300.

[0116] It should be noted that the communication method between the wired controller 1000 and the host 100 can be power line carrier communication or communication via CAN bus, RS485 bus, or HBS bus. This embodiment of the invention does not impose specific limitations, and those skilled in the art can choose different communication methods according to the actual use scenario.

[0117] like Figure 5 As shown, an embodiment of the second aspect of the present invention provides a control method for an air conditioning system. The air conditioning system includes a control device as described in the first aspect embodiment above. The control method includes, but is not limited to, steps S110 and S120:

[0118] Step S110: Obtain a first control command, the first control command indicating that the air conditioning system enters or exits standby mode;

[0119] Step S120: In response to the first control command, control the first controlled switch 620 to turn on or off, so that the standby control power input terminal 610 is powered on or stopped from powering the carrier communication bus 300.

[0120] like Figures 2 to 5As shown in the second aspect embodiment above, the air conditioning system control method includes the control device of the above embodiment. The control device is the basis for implementing the air conditioning system control method. Through the architecture of the control device, when a trigger command, i.e. a first control command, is received, indicating that the air conditioning system enters or exits the standby mode, the first controlled switch 620 is controlled to open or close, i.e., the first controlled switch 620 is controlled to connect or disconnect the standby control power input terminal 610 and the carrier communication bus 300. This enables the standby control power input terminal 610 to be powered on or off to the carrier communication bus 300. By controlling whether the carrier communication bus 300 has a power supply through the first controlled switch 620, the power control of the slave unit 200 can be realized, and the entire air conditioning system can be in a system-level ultra-low standby power consumption state.

[0121] It should be noted that the first control command can be issued by the wired controller 1000 connected to the host 100. The wired controller 1000 serves as an interaction entry point and can change the mode flag bit of the air conditioning system. For example, if the mode flag bit is 1, it indicates that the air conditioning system has entered standby mode, and if the mode flag bit is 0, it indicates that the air conditioning system has exited standby mode. The host 100 monitors the mode flag bit at all times. When it receives the first control command, it determines the mode that the air conditioning system needs to enter, and then controls the first controlled switch 620 to turn on or off, so as to wake up the air conditioning system and put it into the working state or put the air conditioning system into the system-level ultra-low standby power consumption state.

[0122] like Figure 6 As shown, in the control method of the above-mentioned air conditioning system, step S120 involves controlling the on / off state of the first controlled switch 620, including but not limited to steps S210 to S230:

[0123] Step S210: If the first control command indicates that the air conditioning system has entered standby mode, a second control command is sent to the slave unit 200 to cause the slave unit 200 to perform standby preparation work;

[0124] Step S220: Receive a third control command from slave 200, the third control command indicating that standby preparation has been completed;

[0125] Step S230: In response to the third control command, control the first controlled switch 620 to turn off.

[0126] If the first control command indicates that the air conditioning system enters standby mode, the host 100 sends a second control command to the slave 200 to instruct the slave 200 to perform standby preparation work. Upon receiving the second control command, the slave 200 will enter the preparation work, such as closing the solenoid valve. After completing the standby preparation work, it will send feedback to the host 100 to inform the host 100 that it is ready. Upon receiving the third control command from the slave 200, the host 100 confirms that all slave 200s have completed standby preparation. Then, it controls the first controlled switch 620 to turn off, the standby control power input terminal 610 to stop supplying power to the carrier communication bus 300, the second controlled switch 720 to open, and controls the slave 200 to be powered off. The host 100 itself enters a low-power standby mode. The entire air conditioning system can keep only the host 100 in low-power standby mode, waiting for the user to wake it up, while the slave 200s are all powered off, thus achieving ultra-low standby power consumption at the system level.

[0127] In the control method of the above-mentioned air conditioning system, step S120, controlling the on / off state of the first controlled switch 620, includes the following steps:

[0128] If the first control command indicates that the air conditioning system exits standby mode, the first controlled switch 620 is connected.

[0129] If the first control command indicates that the air conditioner exits standby mode, the host 100 controls the first controlled switch 620 to turn on, the standby control power input terminal 610 supplies power to the carrier communication bus 300, the second controlled switch 720 turns on, the standby control power input terminal 610 supplies power to the slave MCU 500 and other loads through the second controlled switch 720, and both the host 100 and the slave 200 are in normal working condition.

[0130] To more clearly illustrate the control method of the air conditioning system according to embodiments of the present invention, the following will describe two control processes: entering standby mode and exiting standby mode. It should be noted that the nodes mentioned below refer to the slave units 200 in the air conditioning system that communicate with the host unit 100.

[0131] like Figure 7 As shown, the air conditioning system enters standby mode: The user sends a first control command to the indoor unit 1 through the wired controller 1 to indicate that it is entering standby mode. The mode flag is set to 1. The indoor unit 1 sends a second control command to all nodes. The slave nodes receive the second control command that they will enter standby mode and perform standby preparation work. All nodes feed back a third control command: standby preparation is complete. The indoor unit 1 controls the MOSFET, and the standby control power input terminal 610 stops supplying power to the carrier communication bus 300. The power supply to all slave nodes is controlled by the relay to cut off the power. The indoor unit 1 and its wired controller 1 enter low-power standby. All slave nodes are powered off, realizing a standby power consumption of 1W for the air conditioning system.

[0132] like Figure 8As shown, the air conditioning system exits standby mode: the user touches to wake up the wired controller 1 and indoor unit 1. The wired controller 1 sends the first control command to the indoor unit 1 to indicate that it is exiting standby mode. The mode flag bit is 0. The indoor unit 1 controls the MOSFET to connect the standby control power input terminal 610 to supply power to the carrier communication bus 300. The power supply of all slave nodes is controlled by the relay, and the system operates normally.

[0133] A third aspect of the present invention provides an air conditioning system including a control device as described in the first aspect embodiment above.

[0134] The air conditioning system provided in the third aspect embodiment above includes a control device as described in the first aspect embodiment above. The host MCU 400 is used to output control signals to the first controlled switch 620, and the standby control power input terminal 610 is used to supply power to the carrier communication bus 300. By connecting the first controlled switch 620 to the standby control power input terminal 610 and the carrier communication bus 300 respectively, the standby control power input terminal 610 can be controlled to supply power or stop supplying power to the carrier communication bus 300. Since the second controlled switch 720 is connected to the carrier communication bus... 300 can obtain power from the carrier communication bus 300. The slave power input terminal 710 is used to provide working power to the slave MCU 500 or other loads. The second controlled switch 720 is set between the slave power input terminal 710 and the slave MCU 500, and can control the power on and off of the slave 200. It can be understood that the power control of the slave 200 is realized by controlling whether the carrier communication bus 300 is loaded with power through the first controlled switch 620, which can realize the entire air conditioning system in a system-level ultra-low standby power consumption state, effectively saving energy.

[0135] A fourth aspect of the present invention provides an operation control device 900, including at least one control processor 910 and a memory 920 for communicatively connecting to the at least one control processor 910; the control processor 910 and the memory 920 can be connected via a bus or other means. Figure 9 The diagram illustrates an example of a bus connection. The memory 920 stores instructions executable by at least one control processor 910. These instructions, when executed by the control processor 910, enable the control processor 910 to perform the control method of the air conditioning system as described in the second aspect embodiment above, for example, to execute the above-described... Figure 5 Method steps S110 and S120 in the text Figure 6 Method steps S210 to S230 in the text Figure 7 The methods and steps in Figure 8The method steps are as follows: When a trigger command, i.e., a first control command, is received, indicating that the air conditioning system enters or exits standby mode, the first controlled switch 620 is controlled to open or close, i.e., the first controlled switch 620 is controlled to connect or disconnect the standby control power input terminal 610 and the carrier communication bus 300. This enables the standby control power input terminal 610 to be powered on or off to the carrier communication bus 300. By controlling whether the carrier communication bus 300 has a power supply through the first controlled switch 620, the power supply of the slave unit 200 can be controlled, and the entire air conditioning system can be kept in a system-level ultra-low standby power consumption state.

[0136] A fifth aspect embodiment of the present invention provides an indoor air conditioner unit, including the operation control device as described in the fourth aspect embodiment above. When the indoor air conditioner unit of this embodiment receives a trigger command, i.e., a first control command, indicating that the air conditioning system has entered or exited standby mode, it controls the first controlled switch 620 to open or close, i.e., controls the first controlled switch 620 to connect or disconnect the standby control power input terminal 610 and the carrier communication bus 300. This enables the standby control power input terminal 610 to be powered on or off, and the carrier communication bus 300 to be powered on or off via the first controlled switch 620. Power control of the slave unit 200 is achieved by controlling whether or not the carrier communication bus 300 is powered, thus enabling the entire air conditioning system to operate in a system-level ultra-low standby power consumption state.

[0137] A sixth aspect of the present invention provides a computer-readable storage medium storing computer-executable instructions that can be used to cause a computer to perform the control method of the air conditioning system as described in the first aspect embodiment above, for example, to perform the above-described... Figure 5 Method steps S110 and S120 in the text Figure 6 Method steps S210 to S230 in the text Figure 7 The methods and steps in Figure 8 The method steps are as follows: When a trigger command, i.e., a first control command, is received, indicating that the air conditioning system enters or exits standby mode, the first controlled switch 620 is controlled to open or close, i.e., the first controlled switch 620 is controlled to connect or disconnect the standby control power input terminal 610 and the carrier communication bus 300. This enables the standby control power input terminal 610 to be powered on or off to the carrier communication bus 300. By controlling whether the carrier communication bus 300 has a power supply through the first controlled switch 620, the power supply of the slave unit 200 can be controlled, and the entire air conditioning system can be kept in a system-level ultra-low standby power consumption state.

[0138] The above provides a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present invention.

Claims

1. A control device for an air conditioning system, characterized in that, The air conditioning system includes a main unit and at least one slave unit, the main unit and the slave unit being connected via a carrier communication bus, and the control device includes: Host MCU; Slave MCU; The host power supply circuit includes a standby control power input terminal and a first controlled switch. The standby control power input terminal is connected to the carrier communication bus through the first controlled switch, and the host MCU is connected to the first controlled switch. The slave power supply circuit includes a slave power input terminal and a second controlled switch. The slave power input terminal supplies power to the slave MCU through the second controlled switch, and the second controlled switch obtains power from the carrier communication bus.

2. The control device according to claim 1, characterized in that, The slave power input terminal includes a live wire terminal and a neutral wire terminal. The second controlled switch is a relay. The live wire terminal is connected to the slave MCU through the normally open contact of the relay. The carrier communication bus is connected to the coil of the relay.

3. The control device according to claim 1, characterized in that, The first controlled switch is a MOSFET, an IGBT, or a transistor.

4. The control device according to claim 1, characterized in that, The host power supply circuit also includes a first inductor module, and the first controlled switch is connected to the carrier communication bus through the first inductor module.

5. The control device according to claim 1, characterized in that, It also includes a host communication circuit, which is connected to the host MCU and the carrier communication bus respectively, and the host communication circuit couples the communication signal to the carrier communication bus.

6. The control device according to claim 5, characterized in that, The host communication circuit includes a first communication interface and a first capacitor module, and the first communication interface is connected to the carrier communication bus through the first capacitor module.

7. The control device according to claim 1, characterized in that, The slave power supply circuit also includes a second inductor module, through which the second controlled switch obtains power from the carrier communication bus.

8. The control device according to claim 2, characterized in that, The slave power supply circuit also includes a rectifier tube connected in parallel across the coil of the relay.

9. The control device according to claim 2, characterized in that, The slave power supply circuit also includes a Zener diode connected in parallel across the coil of the relay.

10. The control device according to claim 1, characterized in that, It also includes a slave communication circuit, which is connected to the slave MCU and the carrier communication bus respectively, and the slave communication circuit couples the communication signal to the carrier communication bus.

11. The control device according to claim 10, characterized in that, The slave communication circuit includes a second communication interface and a second capacitor module. The second communication interface is connected to the carrier communication bus through the second capacitor module.

12. The control device according to claim 2, characterized in that, The slave unit is an outdoor unit of an air conditioner. There are three live wire terminals, and three second controlled switches are correspondingly provided. The three second controlled switches are connected in parallel.

13. The control device according to claim 1, characterized in that, The slave device also includes a switching power supply, which is connected to the slave MCU and the second controlled switch respectively.

14. The control device according to claim 1, characterized in that, It also includes a wired controller, which is connected to the host MCU and is used to trigger the host MCU to output a signal to the first controlled switch.

15. A control method for an air conditioning system, characterized in that, The air conditioning system includes the control device as described in any one of claims 1 to 14, and the control method includes: Obtain a first control command, wherein the first control command indicates that the air conditioning system enters or exits standby mode; In response to the first control command, the first controlled switch is controlled to be turned on or off, so that the standby control power input terminal is powered on or stopped from supplying power to the carrier communication bus.

16. The control method according to claim 15, wherein controlling the first controlled switch to be on or off includes: If the first control command indicates that the air conditioning system has entered standby mode, a second control command is sent to the slave unit to cause the slave unit to perform standby preparation work. Receive a third control command from the slave device, the third control command indicating that standby preparation has been completed; In response to the third control command, the first controlled switch is turned off.

17. The control method according to claim 15, wherein controlling the on / off state of the first controlled switch comprises: If the first control command indicates that the air conditioning system has exited standby mode, the first controlled switch is connected.

18. An air conditioning system, characterized in that, It includes the control device as described in any one of claims 1 to 14.

19. An operation control device, characterized in that, It includes at least one control processor and a memory for communicatively connecting to 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 as described in any one of claims 15 to 17.

20. An indoor unit for an air conditioner, characterized in that, It includes the operation control device as described in claim 19.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the control method as described in any one of claims 15 to 17.

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