A multi-connected air conditioning system

Abstract

The present invention discloses a multi-split air-conditioning system, which configures an outdoor Bluetooth MESH module, a wire-controlled Bluetooth MESH module, a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module for an outdoor unit, a wire controller and an indoor unit; a configuration terminal combines outdoor unit information and first indoor unit information to form an indoor and outdoor unit communication network, and combines wire controller information and second indoor unit information to form an indoor unit communication network, so that devices in the same indoor and outdoor unit communication network can all exchange information with other devices through the Bluetooth MESH module, and devices in the same indoor unit communication network can all exchange information with other devices through the Bluetooth MESH module, as long as a control device sends a control instruction to any device in the network, the device then forwards the control instruction to other devices in the same network through the Bluetooth MESH module, thereby realizing wireless communication of the multi-split air-conditioning system and reducing the construction difficulty and cost of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-split air conditioners, and in particular to a multi-split air conditioner system. Background Art

[0002] Central air conditioners are widely used in office and home buildings to meet people's requirements for indoor temperature comfort, and their market demand continues to expand.

[0003] Currently, the communication between the indoor unit and outdoor unit of the central air conditioner, or between the indoor unit and the wired controller, is realized by a wired communication structure. Therefore, communication lines are indispensable. This leads to the need to consider various factors such as the direction of the communication line, communication quality and cost during installation and construction, which increases the difficulty and cost of installation and construction.

[0004] Moreover, in the case of wired communication, to realize the intelligence of multi-split air-conditioning systems, most of them need to configure an intelligent gateway to realize intelligent communication and control between the air-conditioning outdoor unit, indoor unit and wired controller through the transit of the intelligent gateway, but the intelligent gateway significantly increases the user's procurement cost. Summary of the invention

[0005] The purpose of the present invention is to propose a multi-split air-conditioning system, which realizes wireless communication networking between outdoor units and indoor units, and between wired controllers and indoor units by means of Bluetooth MESH module networking, so as to solve the above-mentioned problems existing in the wired communication structure of the existing multi-split air-conditioning system.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] The present invention provides a multi-split air conditioning system, comprising:

[0008] Outdoor unit, several indoor units and wired controller;

[0009] Outdoor Bluetooth MESH module, installed in the outdoor unit;

[0010] The wire-controlled Bluetooth MESH module is installed in the wire controller;

[0011] The first indoor Bluetooth MESH module is installed in each indoor unit and forms an indoor and outdoor unit communication network with the outdoor Bluetooth MESH module;

[0012] The second indoor Bluetooth MESH module is installed in each indoor unit and forms an indoor unit communication network with the wire-controlled Bluetooth MESH module;

[0013] Configure the terminal to:

[0014] Search for outdoor Bluetooth MESH modules, wired Bluetooth MESH modules, first indoor Bluetooth MESH modules, and second indoor Bluetooth MESH modules;

[0015] Receive outdoor unit information, wire controller information, indoor unit first information, and indoor unit second information reported by the outdoor Bluetooth MESH module, the wire control Bluetooth MESH module, the first indoor Bluetooth MESH module, and the second indoor Bluetooth MESH module;

[0016] Establishing an indoor and outdoor unit communication network based on the outdoor unit information and the first indoor unit information;

[0017] An indoor unit communication network is established based on the second indoor unit information and the wire controller information.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are as follows: in the multi-split air-conditioning system proposed by the present invention, an outdoor Bluetooth MESH module is configured for the outdoor unit, a wire-controlled Bluetooth MESH module is configured for the wire controller, and a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module are configured for each indoor unit, wherein the outdoor Bluetooth MESH module and the first indoor Bluetooth MESH module can be networked to form an indoor and outdoor unit communication network, and the wire-controlled Bluetooth MESH module and the second indoor Bluetooth MESH module can be networked to form an indoor unit communication network; the networking is implemented by a configuration terminal, which searches for the outdoor Bluetooth MESH module, the wire-controlled Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module, and receives the outdoor Bluetooth MESH module, the wire-controlled Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module reporting The outdoor unit information, the wire controller information, the first indoor unit information and the second indoor unit information are combined with the outdoor unit information and the first indoor unit information to form an indoor and outdoor unit communication network, and the wire controller information and the second indoor unit information are combined to form an indoor unit communication network, so that the devices in the same indoor and outdoor unit communication network can exchange information with other devices through the Bluetooth MESH module, and the devices in the same indoor unit communication network can exchange information with other devices through the Bluetooth MESH module. As long as the control device sends a control instruction to any device in the network, the device will forward the control instruction to other devices in the same network through the Bluetooth MESH module, thereby realizing wireless communication of the multi-split air-conditioning system. At the same time, it can also save the cost of the intelligent gateway added to realize wireless communication, and reduce the difficulty and cost of installation and construction while ensuring data communication and intelligent control.

[0019] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the system architecture of the multi-split air conditioning system proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the network relationship of establishing a Bluetooth MESH network in the multi-split air conditioning system proposed by the present invention;

[0023] Figure 3 The network configuration steps of the multi-split air conditioning system proposed by the present invention are shown in FIG.

[0024] Figure 4 This is a schematic diagram of the networking process of the multi-split air conditioning system proposed by the present invention;

[0025] Figure 5 This is the second schematic diagram of the networking process of the multi-split air conditioning system proposed by the present invention;

[0026] Figure 6 This is the third schematic diagram of the networking process of the multi-split air conditioning system proposed by the present invention;

[0027] Figure 7 This is the fourth schematic diagram of the networking process of the multi-split air conditioning system proposed by the present invention;

[0028] Figure 8 An embodiment of the multi-split air conditioning system networking proposed by the present invention;

[0029] Fig. 9 This is the second embodiment of the multi-split air conditioning system networking proposed by the present invention;

[0030] Fig.10 This is the fifth schematic diagram of the networking process of the multi-split air conditioning system proposed by the present invention;

[0031] Fig.11 This is a schematic diagram of the addressing process of the multi-split air conditioning system proposed by the present invention;

[0032] Fig.12 This is the second illustration of the addressing process of the multi-split air conditioning system proposed by the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0039] The multi-split air conditioning system proposed by the present invention is as follows: Figure 1 As shown, including:

[0040] The outdoor unit 1 is installed outdoors and is equipped with an outdoor Bluetooth MESH module 11 .

[0041] The wire controller 2 is installed indoors and is equipped with a wire-controlled Bluetooth MESH module 21. In some embodiments of the present invention, one wire controller is installed in a room to control all indoor units in the room. In some embodiments of the present invention, more than one wire controller is installed in a room to control all indoor units in the room at the same time.

[0042] Several indoor units 3 are arranged in one or more rooms, and one or more indoor units are arranged in one room; each indoor unit is equipped with two Bluetooth MESH modules: a first indoor Bluetooth MESH module 31 and a second indoor Bluetooth MESH module 32. Figure 2 As shown, the first indoor Bluetooth MESH module is used to form an indoor and outdoor unit communication network with the outdoor Bluetooth MESH module, and the second indoor Bluetooth MESH module is used to form an indoor unit communication network with the wire-controlled Bluetooth MESH module.

[0043] The configuration terminal 4 is equipped with a Bluetooth module, on which a configuration APP is running, which is used to implement group networking for the outdoor unit, wire controller and each indoor unit, such as Figure 3 As shown, the following grouping networking steps are included:

[0044] Step S31: searching for an outdoor Bluetooth MESH module, a wire-controlled Bluetooth MESH module, a first indoor Bluetooth MESH module, and a second indoor Bluetooth MESH module.

[0045] After searching for the outdoor Bluetooth MESH module, the wire-controlled Bluetooth MESH module, the first indoor Bluetooth MESH module, and the second indoor Bluetooth MESH module, the terminal is configured to display a list of the above Bluetooth MESH modules on its display interface.

[0046] Step S32: receiving outdoor unit information, wire controller information, indoor unit first information and indoor unit second information reported by the outdoor Bluetooth MESH module, the wire control Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module.

[0047] In some embodiments of the present invention, Figure 4 As shown, after power-on, the outdoor unit, the wire controller and each indoor unit actively report their device information to the Bluetooth MESH module configured therefor, wherein the outdoor unit reports its outdoor unit information to the outdoor Bluetooth MEHS module, the wire controller reports its wire controller information to the wire-controlled Bluetooth MESH module, and the indoor unit reports the first information of the indoor unit to the first indoor Bluetooth MESH module configured therefor, and reports the second information of the indoor unit to the second indoor Bluetooth MESH module configured therefor.

[0048] The outdoor Bluetooth MESH module forwards the outdoor unit information to the configuration terminal based on the Bluetooth connection with the configuration terminal; the wire control Bluetooth MESH module forwards the wire controller information to the configuration terminal based on the Bluetooth connection with the configuration terminal; the first indoor Bluetooth MESH module forwards the first information of the indoor unit to the configuration terminal based on the Bluetooth connection with the configuration terminal, and the second indoor Bluetooth module forwards the second information of the indoor unit to the configuration terminal based on the Bluetooth connection with the configuration terminal.

[0049] When forwarding the outdoor unit information, the outdoor Bluetooth MESH module also forwards its own Bluetooth MESH module number or identifier to the configuration terminal; when forwarding the wire controller information, the wire control Bluetooth MESH module also forwards its own Bluetooth MESH module number or identifier to the configuration terminal; when forwarding the first information of the indoor unit or the second information of the indoor unit, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module also forward their own Bluetooth MESH numbers or identifiers to the configuration terminal.

[0050] After receiving the outdoor unit information, the wire controller information, the first indoor unit information, and the second indoor unit information, the configuration terminal combines the number or identifier of the outdoor Bluetooth MESH module, the number or identifier of the wire-controlled Bluetooth MESH module, the number or identifier of the first indoor Bluetooth MESH module, and the number or identifier of the second indoor Bluetooth MESH module to establish a correspondence between the outdoor unit and the outdoor Bluetooth MESH module, the wire controller and the wire-controlled Bluetooth MESH module, and each indoor unit and its associated first indoor Bluetooth MESH module, and forms a relationship list between the device and the Bluetooth MESH module and displays it, such as Figure 5 shown.

[0051] In some embodiments of the present invention, outdoor unit information, wired controller information, indoor unit first information and indoor unit second information are shown in the following Table 1:

[0052] Table 1

[0053] Device Type System Number Address Number Outdoor unit information 03H Dial code information 0 Indoor unit first information 23H Dial code information Dial code information Indoor unit second information 21H 0 0 Remote controller information 01H 0 0

[0054] The first information of the indoor unit and the information of the outdoor unit can be used for networking the outdoor unit with each indoor unit, and the second information of the indoor unit and the wired controller information can be used for networking the indoor unit with the wired controller.

[0055] Step S33: establishing an indoor and outdoor unit communication network based on the outdoor unit information and the first indoor unit information.

[0056] In some embodiments of the present invention, all outdoor units and indoor units of the same system can be grouped together to form an indoor and outdoor unit communication network according to the system number in the outdoor unit information and the system number in the first information of the indoor unit. The group number is the system number set by the dial code.

[0057] In some embodiments of the present invention, both the outdoor unit information and the indoor unit first information may include device identification, such as manufacturing code, factory identification, etc., so that all outdoor units and indoor units of the same system can be grouped together to form an indoor and outdoor unit communication network according to the device identification in the outdoor unit information and the device identification in the indoor unit first information, and the group numbers of the groups can be set in sequence.

[0058] Step S34: Building an indoor unit communication network based on the second indoor unit information and the wired controller information.

[0059] In some embodiments of the present invention, both the wire controller information and the second information of the indoor unit may include device identification, such as manufacturing code, factory identification, etc., so that the wire controller and the indoor unit it needs to control can be grouped together to form an indoor unit communication network according to the device identification in the wire controller information and the device identification in the second information of the indoor unit, and the group numbers of the groups can be set in sequence.

[0060] In some embodiments of the present invention, the outdoor unit and the outdoor Bluetooth MESH module, the wire controller and the wire-controlled Bluetooth MESH module, the indoor unit and the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module all adopt half-duplex asynchronous communication with a baud rate of 9600bps, consisting of a start bit + data bit + parity bit + stop bit, a total of 11 bits.

[0061] In some embodiments of the present invention, Figure 6 and Figure 7 As shown, the configuration terminal uses the following method to build the indoor unit communication network:

[0062] Step S71: Send a setting instruction to the selected device.

[0063] After the multi-split air conditioning system is installed, the user or installer selects a target room, and the wired controllers and indoor units installed in the room need to build one or more indoor unit communication networks.

[0064] In practical applications, there are situations where multiple indoor unit communication networks need to be established. Usually, the wire controller and the indoor unit in a room need to build an indoor unit communication network, and different rooms build different indoor unit communication networks; even, at least two wire controllers are arranged in a room, and each wire controller controls a different indoor unit, then at least two indoor unit communication networks need to be built in combination with the wire controller and the indoor unit it needs to control.

[0065] From the list of devices and Bluetooth MESH module relationships displayed on the configuration terminal, select a device, which can be a wired controller or any indoor unit.

[0066] When the selected device is a wired controller, the command is set to be the command executed by the wired controller, such as on, on and off, flashing indicator light, or displaying a specified icon or text, etc.; when the selected device is an indoor unit, the command is set to be the command executed by the indoor unit, such as air supply, flashing indicator light, or displaying a specified icon or text, etc.

[0067] After selecting a device to send the setting instruction, execute step S72, then return to this step, select a device again to send the setting instruction, then execute step S72, and then return to this step until all devices are traversed.

[0068] Step S72: Determine the device networking relationship based on whether the device executes the setting instruction.

[0069] The configuration terminal is connected via Bluetooth, and in combination with the number or identifier of the Bluetooth MESH module associated with the device, sends a setting instruction to its Bluetooth MESH module. After receiving the setting instruction, the Bluetooth MESH module forwards it to the device, and the device executes the setting instruction. The user or installer can observe whether the wired controller or indoor unit that generates the action is located in the target room; when multiple indoor unit communication networks need to be established in the target room, it is further determined which wired controller controls the indoor unit that executes the setting instruction.

[0070] When there is more than one room that needs to build an indoor unit communication network, after the network is built in the target room, enter the next room and follow the same steps.

[0071] Step S73: Establishing an indoor unit communication network according to the determined networking relationship.

[0072] After the indoor unit networking relationship of the target room is determined according to step S71 and step S72, that is, after the wire controller and the indoor unit in the target room are determined, the wire controller and the indoor unit are associated to establish an indoor unit communication network.

[0073] When multiple indoor unit communication networks need to be established, the above steps S71 to S73 are repeated.

[0074] In some embodiments of the present invention, in the configuration APP of the configuration terminal, a method of editing group networking is provided to the user or installer, such as Figure 8 As shown, including:

[0075] 1. Provide controls, menus or lists for editing the indoor unit communication network.

[0076] Thus, one or more indoor and communication networks can be created through controls, menus or lists, and the networks can be numbered at the same time.

[0077] 2. Create an indoor unit communication network framework.

[0078] Network frames are numbered according to the order in which they were created.

[0079] 3. Select a device from the list of devices and Bluetooth MESH module relationships.

[0080] Select Simultaneously and configure the APP to send setting instructions to the Bluetooth MESH module equipped with the device through Bluetooth connection. When the device is a wired controller, the setting instructions of the wired controller are sent; when the device is an indoor unit, the setting instructions of the indoor unit are sent.

[0081] 4. Observe whether the device executing the setting command belongs to the created indoor unit communication network.

[0082] If yes, go to step 5; if no, return to step 3.

[0083] 5. Drag the device that executes the setting instructions into the established indoor unit communication network framework.

[0084] 6. Return to step 3 until all devices are traversed.

[0085] 7. When there are multiple indoor unit communication networks that need to be established, return to step 2.

[0086] In some embodiments of the present invention, in the configuration APP of the configuration terminal, another editable group networking method is provided for the user or installer, such as Fig. 9 As shown, including:

[0087] 1. Provide controls, menus or lists for editing the indoor unit communication network.

[0088] Thus, one or more indoor and communication networks can be created through controls, menus or lists, and the networks can be numbered at the same time.

[0089] 2. Determine the number of networks N of the indoor unit communication network that needs to be created.

[0090] 3. Create N indoor unit communication network frameworks according to the network number N.

[0091] Network frames are numbered according to the order in which they were created.

[0092] 4. Select a device from the list of devices and Bluetooth MESH module relationships.

[0093] Select Simultaneously and configure the APP to send setting instructions to the Bluetooth MESH module equipped with the device through Bluetooth connection. When the device is a wired controller, the setting instructions of the wired controller are sent; when the device is an indoor unit, the setting instructions of the indoor unit are sent.

[0094] 5. Observe which indoor unit communication network the device that executes the setting command belongs to.

[0095] That is, it is determined to which indoor unit communication network the device executing the setting command belongs.

[0096] 6. Drag the device that executes the setting instructions into the determined indoor unit communication network framework.

[0097] 7. Return to step 4 until all devices are traversed.

[0098] The configuration terminal completes the grouping and establishment of the indoor and outdoor unit communication network and the indoor unit communication network based on the above content, and specifies a network identifier or number for the established network, and allocates a multicast address and a unicast address for the devices in the network. The devices include an outdoor unit, a wired controller, and each indoor unit, as shown in Table 2.

[0099] Table 2

[0100] The upper eight bits of the multicast address The lower eight bits of the multicast address High 8 bits of unicast address The lower eight bits of the unicast address address C0H System Number 00H Automatic sequence generation

[0101] like Fig.10 As shown, the configuration terminal sends the grouping success status information to each Bluetooth MESH module through the Bluetooth connection, and each Bluetooth MESH module forwards it to its own device; the grouping success status information includes but is not limited to the networking instruction, multicast address and unicast address.

[0102] The outdoor Bluetooth MESH module, the line-controlled Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module respectively store the multicast address and unicast address assigned to them by the configuration terminal while forwarding the packet success status information to their respective devices, so as to ensure that there is no need to re-network when the device is powered off and then powered on.

[0103] In some embodiments of the present invention, the configuration terminal may cancel the grouping through a cancel instruction, and after the grouping is canceled, the Bluetooth MESH module clears the stored address information.

[0104] In view of the fact that the configuration terminal has completed the group networking, but the outdoor unit, wire controller and indoor unit cannot know the networking relationship between each other, in the application of the present invention, when the outdoor unit or wire controller receives the grouping success status information, it first determines whether the multicast address is zero. If it is zero, it indicates that the grouping has been cancelled. If it is not zero, it starts to execute the addressing operation within the same network, so that the outdoor unit in the same network can address the indoor unit, and the wire controller in the same group can address the indoor unit.

[0105] like Fig.11 As shown in the figure, the addressing operation of the outdoor unit includes:

[0106] 1. The outdoor unit sends an addressing request multicast via the outdoor Bluetooth MESH module.

[0107] 2. After receiving the addressing request, the indoor unit in the same indoor and outdoor unit communication network replies with a first addressing response through the first indoor Bluetooth MESH module installed therein.

[0108] The first addressing response includes the address information of the indoor unit.

[0109] 3. The outdoor unit collects and saves the number and address information of the indoor units that respond.

[0110] 4. Second multicast addressing requirements for the outdoor unit.

[0111] 5. Compare the number and addresses of indoor units that responded after two addressings to see if they are consistent.

[0112] When they are consistent, the indoor and outdoor unit addressing is completed; when they are inconsistent, the multicast addressing request and comparison steps are repeated until the number and addresses of the indoor units that receive the responses collected are consistent.

[0113] like Fig.12 As shown, the addressing operation of the wire controller includes:

[0114] 1. The wire controller sends an addressing request multicast via the wire control Bluetooth MESH module.

[0115] 2. After receiving the addressing request, the indoor unit in the same indoor unit communication network replies with a second addressing response through the second indoor Bluetooth MESH module installed therein.

[0116] The second addressing response includes the address information of the indoor unit.

[0117] 3. The wired controller collects and saves the number and address information of the indoor units that respond.

[0118] 4. Second multicast addressing requirements of the wire controller.

[0119] 5. Compare the number and addresses of indoor units that responded after two addressings to see if they are consistent.

[0120] When they are consistent, the wire controller-indoor unit addressing is completed; when they are inconsistent, the multicast addressing requirements and comparison steps are repeated until the number and addresses of the indoor units that receive the responses collected are consistent.

[0121] To prevent communication conflicts in indoor unit addressing responses, in some embodiments of the present invention, the first indoor MESH module or the second indoor MESH module uses a random time response when replying to the first addressing response or the second addressing response to increase the success rate of addressing.

[0122] After addressing is completed, the outdoor unit and indoor unit, the wired controller and indoor unit can enter normal communication, among which:

[0123] The communication between the outdoor unit and the indoor unit includes: the outdoor unit polls the indoor unit in the same indoor and outdoor unit communication network, and the indoor unit in the same indoor and outdoor unit communication network responds after receiving the polling message.

[0124] The communication between the wire controller and the indoor unit includes: the wire controller polls the indoor unit in the same indoor unit communication network, and the indoor unit in the same indoor unit communication network responds after receiving the polling message.

[0125] Based on the multi-split air-conditioning system proposed by the present invention, the outdoor unit and the indoor unit realize wireless communication connection, and the outdoor unit and the indoor unit in the communication network of the indoor and outdoor units can realize intelligent multicast communication or unicast communication based on the node relay, self-organizing network and security features of the Bluetooth MESH module; the wire controller and the indoor unit realize wireless communication connection, and the wire controller and the indoor unit in the communication network of the indoor unit can realize intelligent multicast communication or unicast communication based on the node relay, self-organizing network and security features of the Bluetooth MESH module, thereby reducing the difficulty of installation and wiring, and no intelligent gateway is required, thereby reducing the system purchase cost.

[0126] Based on the multi-split air conditioning system proposed by the present invention, each device in the system realizes intelligent communication and realizes many functions of the existing multi-split air conditioning system. In the embodiment of the present invention, the air conditioner in the multi-split air conditioning system performs the refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0127] The low-temperature and low-pressure refrigerant enters the compressor, which compresses it into high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0128] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature and low-pressure refrigerant gas to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0129] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0130] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0131] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0132] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A multi-split air conditioning system, comprising: Outdoor unit, several indoor units and wired controller; It is characterized by further comprising: Outdoor Bluetooth MESH module, installed in the outdoor unit; The wire-controlled Bluetooth MESH module is installed in the wire controller; The first indoor Bluetooth MESH module is installed in each indoor unit and forms an indoor and outdoor unit communication network with the outdoor Bluetooth MESH module; The second indoor Bluetooth MESH module is installed in each indoor unit and forms an indoor unit communication network with the wire-controlled Bluetooth MESH module; Configure the terminal to: Search for outdoor Bluetooth MESH modules, wired Bluetooth MESH modules, first indoor Bluetooth MESH modules, and second indoor Bluetooth MESH modules; Receive outdoor unit information, wire controller information, indoor unit first information, and indoor unit second information reported by the outdoor Bluetooth MESH module, the wire control Bluetooth MESH module, the first indoor Bluetooth MESH module, and the second indoor Bluetooth MESH module; Establishing an indoor and outdoor unit communication network based on the outdoor unit information and the first indoor unit information; An indoor unit communication network is established based on the second indoor unit information and the wire controller information; After establishing the indoor and outdoor unit communication network and the indoor unit communication network, the configuration terminal sends the grouping success status information to each device; wherein the devices include the outdoor unit, the wire controller and each indoor unit; the grouping success status information includes the multicast address and the unicast address; and, The outdoor Bluetooth MESH module, the wire-controlled Bluetooth MESH module, the first indoor Bluetooth MESH module, and the second indoor Bluetooth MESH module store their multicast addresses and unicast addresses respectively; The outdoor unit sends an addressing request multicast via the outdoor Bluetooth MESH module. After receiving the addressing request, the indoor unit in the same indoor and outdoor unit communication network replies with a first addressing response via the first indoor Bluetooth MESH module installed thereon. The first addressing response includes the address information of the indoor unit. The outdoor unit collects and stores the number and address information of the indoor units that respond; and, The outdoor unit multicasts the addressing requirements for the second time, and compares the number and addresses of the indoor units that have responded after the two addressings to see if they are consistent. If they are consistent, the indoor and outdoor units addressing is completed; if they are inconsistent, the multicast addressing requirements and comparison steps are repeated until the number and addresses of the indoor units that have responded are consistent; The wire controller sends an addressing request multicast via the wire control Bluetooth MESH module. After receiving the addressing request, the indoor unit in the same indoor unit communication network replies with a second addressing response via the second indoor Bluetooth MESH module installed thereon. The second addressing response includes the address information of the indoor unit. The wired controller collects and stores the number and address information of the indoor units that respond; and, The wire controller performs a second multicast addressing request, and compares the number and addresses of the indoor units that respond after the two addressings to see if they are consistent. If they are consistent, the wire controller-indoor unit addressing is completed; if they are inconsistent, the multicast addressing request and comparison steps are repeated until the number and addresses of the indoor units that respond are consistent.

2. The multi-split air conditioning system according to claim 1, characterized in that: After receiving the outdoor unit information, the wire controller information, the first indoor unit information, and the second indoor unit information, the configuration terminal establishes and displays the correspondence between the outdoor unit and the outdoor Bluetooth MESH module, the wire controller and the wire-controlled Bluetooth MESH module, and each indoor unit and its assembled first indoor Bluetooth MESH module.

3. The multi-split air conditioning system according to claim 2, characterized in that: The outdoor unit information includes a system number of the outdoor unit, and the first indoor unit information includes a system number of the indoor unit; When the configuration terminal is used to establish the indoor and outdoor unit communication network, it includes: According to the system number of the outdoor unit and the system number of the indoor unit, the indoor units and outdoor units with the same system number are grouped to form an indoor and outdoor unit communication network.

4. The multi-split air conditioning system according to claim 2, characterized in that: The wire controller information includes its device type, and the second indoor unit information includes its device type; When the configuration terminal is setting up the indoor unit communication network, the configuration terminal repeats the following steps to determine the device networking relationship, and sets up the indoor unit communication network according to the determined networking relationship: Sending setting instructions to each device respectively; the device is a wired controller or any indoor unit; The networking relationship of the devices is determined based on whether the devices execute the setting instruction.

5. The multi-split air conditioning system according to claim 3, characterized in that: The outdoor unit reports its own system number to its outdoor Bluetooth MESH module when powered on; and, When powered on, each indoor unit reports its own system number to the first indoor Bluetooth MESH module it is equipped with.

6. The multi-split air conditioning system according to claim 1, characterized in that: The first indoor MESH module or the second indoor MESH module uses a random time response when replying the first addressing response or the second addressing response.

7. The multi-split air conditioning system according to claim 6, characterized in that: The communication between the outdoor unit and the indoor unit includes: the outdoor unit polls the indoor unit in the same indoor and outdoor unit communication network, and the indoor unit in the same indoor and outdoor unit communication network responds after receiving the polling message; The communication between the wire controller and the indoor unit includes: the wire controller polls the indoor unit in the same indoor unit communication network, and the indoor unit in the same indoor unit communication network responds after receiving the polling message.

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