CN115264767A - Multi-split air conditioning system - Google Patents

Abstract

The invention discloses a multi-split air conditioning system, which is characterized in that an outdoor Bluetooth MESH module, a line control Bluetooth MESH module, a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module are configured for an outdoor unit, a line controller and an indoor unit; the configuration terminal combines outdoor unit information and first indoor unit information to establish an indoor unit and outdoor unit communication network, and combines line controller information and second indoor unit information to establish an indoor unit communication network, so that equipment in the same indoor unit and outdoor unit communication network can perform information interaction with other equipment through the Bluetooth MESH module, the equipment in the same indoor unit communication network can perform information interaction with other equipment through the Bluetooth MESH module, as long as the control device issues a control command to any equipment in the network, and the equipment forwards the control command to other equipment 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

Multi-split air conditioning system

Technical Field

The invention relates to the technical field of multi-split air conditioners, in particular to a multi-split air conditioner system.

Background

The central air conditioner is widely applied to the interior of office and home buildings, meets the requirement of people on indoor temperature comfort, and continuously expands the market demand.

The communication between the indoor unit and the outdoor unit of the current central air conditioner or the indoor unit and the wire controller is realized by adopting a wired communication structure, so that the communication line is necessary, and the communication line trend, the communication quality, the cost and other factors need to be considered during installation and construction, and the difficulty and the cost of the installation and construction are increased.

In addition, in the case of wired communication, to realize the intellectualization of the multi-split air conditioning system, an intelligent gateway is mostly needed to be configured, and the intellectualized communication and control among the air conditioning outdoor unit, the indoor unit and the wire controller are realized through the transfer of the intelligent gateway, but the intelligent gateway obviously improves the purchase cost of users.

Disclosure of Invention

The invention aims to provide a multi-split air conditioning system, which realizes wireless communication networking of an outdoor unit and an indoor unit and wired controllers and the indoor unit in a Bluetooth MESH module networking mode and solves the problems of the wired communication structure of the existing multi-split air conditioning system.

In order to realize the purpose of the invention, the invention adopts the following technical scheme to realize:

the invention provides a multi-split air conditioning system, which comprises:

the system comprises an outdoor unit, a plurality of indoor units and a wire controller;

the outdoor Bluetooth MESH module is arranged in the outdoor unit;

the line control Bluetooth MESH module is arranged in the line controller;

the first indoor Bluetooth MESH module is arranged in each indoor unit; the Bluetooth MESH module and the outdoor Bluetooth MESH module form an indoor and outdoor machine communication network;

the second indoor Bluetooth MESH module is arranged in each indoor unit; the Bluetooth wireless local area network and the wire control MESH module form an indoor unit communication network;

a configuration terminal for:

searching an outdoor Bluetooth MESH module, a drive-by-wire Bluetooth MESH module, a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module;

receiving outdoor unit information, line controller information, indoor unit first information and indoor unit second information which are reported by an outdoor Bluetooth MESH module, a line control Bluetooth MESH module, a first indoor Bluetooth MESH module and a 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;

and establishing an indoor unit communication network based on the second indoor unit information and the wire controller information.

Compared with the prior art, the invention has the advantages and positive effects that: in the multi-split air conditioning system provided by the invention, an outdoor Bluetooth MESH module is configured for an outdoor unit, a line controller is configured with a line control Bluetooth MESH module, and each indoor unit is configured with a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module, wherein the outdoor Bluetooth MESH module and the first indoor Bluetooth MESH module can form an indoor and outdoor unit communication network through networking, and the line control Bluetooth MESH module and the second indoor Bluetooth MESH module can form an indoor unit communication network through networking; the networking is realized by adopting a configuration terminal, the configuration terminal searches for an outdoor Bluetooth MESH module, a line control Bluetooth MESH module, a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module, receives outdoor machine information, line controller information, indoor machine first information and indoor machine second information reported by the outdoor Bluetooth MESH module, the line control Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module, constructs an indoor machine communication network by combining the outdoor machine information and the indoor machine first information, constructs an indoor machine communication network by combining the line controller information and the indoor machine second information, enables equipment in the same indoor machine communication network to carry out information interaction with other equipment through the Bluetooth MESH module, and enables the equipment in the same indoor machine communication network to carry out information interaction with other equipment through the Bluetooth MESH module.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic system architecture of a multi-split air conditioning system according to the present invention;

fig. 2 is a schematic network relationship of a bluetooth MESH network established in the multi-split air conditioning system according to the present invention;

fig. 3 is a schematic diagram of a networking configuration step of a multi-split air conditioning system according to the present invention;

fig. 4 is one of networking process illustrations of the multi-split air conditioning system according to the present invention;

fig. 5 is a second schematic diagram of a networking process of the multi-split air conditioning system according to the present invention;

fig. 6 is a third schematic diagram of a networking process of the multi-split air conditioning system provided by the invention;

fig. 7 is a fourth schematic diagram of a networking process of the multi-split air conditioning system provided by the invention;

fig. 8 is an embodiment of a multi-split air conditioning system network according to the present invention;

fig. 9 is a second embodiment of a multi-split air conditioning system networking according to the present invention;

fig. 10 is a fifth schematic diagram of a networking process of the multi-split air conditioning system provided by the invention;

fig. 11 is one of addressing processes of a multi-split air conditioning system according to the present invention;

fig. 12 is a second schematic diagram illustrating an addressing process of the multi-split air conditioning system according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making any creative effort belong to the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

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

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

As shown in fig. 1, the multi-split air conditioning system provided by the present invention includes:

the outdoor unit 1 is installed outdoors and is provided with an outdoor Bluetooth MESH module 11.

The wire controller 2 is installed indoors and is provided with a wire control Bluetooth MESH module 21; in some embodiments of the present invention, a line controller is disposed in a room for controlling all indoor units in the room, and in some embodiments of the present invention, more than one line controller is disposed in a room for controlling all indoor units in the room.

The indoor units 3 are arranged in one or more rooms, and one or more indoor units are arranged in one room; every indoor set all disposes two bluetooth MESH modules: a first indoor bluetooth MESH module 31 and a second indoor bluetooth MESH module 32. As shown in fig. 2, the first indoor bluetooth MESH module is used to form an indoor/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 bluetooth by wire MESH module.

The configuration terminal 4 is configured with a bluetooth module, on which a configuration APP is run, and is used for implementing packet networking on the outdoor unit, the line controller and each indoor unit, as shown in fig. 3, the configuration terminal includes the following packet networking steps:

step S31: the device comprises an outdoor Bluetooth MESH module, a drive-by-wire Bluetooth MESH module, a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module.

After searching the outdoor Bluetooth MESH module, the line control Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module, the configuration terminal displays the list of the Bluetooth MESH modules on the display interface.

Step S32: and receiving outdoor machine information, wire controller information, indoor machine first information and indoor machine 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.

In some embodiments of the present invention, as shown in fig. 4, after being powered on, the outdoor unit, the line controller, and each indoor unit actively report the device information to the bluetooth MESH module configured for the outdoor unit, wherein the outdoor unit reports the outdoor unit information to the outdoor bluetooth MEHS module, the line controller reports the line controller information to the line-controlled bluetooth MESH module, and the indoor units report the first information of the indoor units to the first indoor bluetooth MESH module configured for the indoor units, and report the second information of the indoor units to the second indoor bluetooth MESH module configured for the indoor units.

The outdoor Bluetooth MESH module forwards the outdoor unit information to the configuration terminal based on Bluetooth connection with the configuration terminal; the line controller information is forwarded to the configuration terminal by the line controller MESH module 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 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 Bluetooth connection with the configuration terminal.

The outdoor Bluetooth MESH module forwards the outdoor unit information and simultaneously forwards the number or the identification of the Bluetooth MESH module to the configuration terminal; the wire control Bluetooth MESH module forwards the wire controller information, and simultaneously forwards the number or the identification of the Bluetooth MESH module to a configuration terminal; the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module forward the first information of the indoor unit or the second information of the indoor unit and forward the Bluetooth MESH numbers or the identifications of the indoor units to the configuration terminal.

After receiving the outdoor unit information, the line controller information, the first indoor unit information, and the second indoor unit information, the configuration terminal establishes a correspondence between the outdoor unit and the outdoor bluetooth MESH module, the line controller and the bluetooth by-wire MESH module, and the first indoor bluetooth MESH module and the second indoor bluetooth MESH module in each indoor unit and its group, by combining the number or identifier of the outdoor bluetooth MESH module, the number or identifier of the bluetooth by-wire 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, and forms a relationship list between the devices and the bluetooth MESH modules, and displays the relationship list, as shown in fig. 5.

In some embodiments of the present invention, the outdoor unit information, the line controller information, the indoor unit first information, and the indoor unit second information are as follows:

watch 1

	Type of device	System number	Address number
				Outdoor machine information	03H	Dial information	0
First information of indoor unit	23H	Dial information	Dial information
				Second information of indoor unit	21H	0	0
Line controller information	01H	0	0

The first information of the indoor units and the information of the outdoor units can be used for networking the outdoor units and the indoor units, and the second information of the indoor units and the information of the wire controllers can be used for networking the indoor units and the wire controllers.

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

In some embodiments of the present invention, all the outdoor units and the indoor units of the same system may be grouped into one group to form an indoor-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, where the grouped group number is the system number set by dialing.

In some embodiments of the present invention, the outdoor unit information and the first indoor unit information may include device identifiers, such as manufacturing codes and factory identifiers, so that all the outdoor units and the indoor units of the same system may be grouped into a group to form an indoor and outdoor unit communication network according to the device identifiers in the outdoor unit information and the device identifiers in the first indoor unit information, and the group numbers of the groups may be numbered in sequence.

Step S34: and establishing an indoor unit communication network based on the second indoor unit information and the wire controller information.

In some embodiments of the present invention, the information of the line controller and the second information of the indoor unit may include device identifiers, such as manufacturing code, factory identifier, etc., so that the line controller and the indoor unit to be controlled may be divided into a group to form an indoor unit communication network according to the device identifier in the information of the line controller and the device identifier in the second information of the indoor unit, and the group numbers of the group may be numbered and set in sequence.

In some embodiments of the present invention, the outdoor unit and the outdoor bluetooth MESH module, the line controller and the line control bluetooth MESH module, and the indoor unit and the first indoor bluetooth MESH module and the second indoor bluetooth MESH module all use half-duplex asynchronous communication, and the baud rate is 9600bps, which is composed of 11 bits in total, i.e., a start bit + a data bit + a parity bit + a stop bit.

In some embodiments of the present invention, as shown in fig. 6 and 7, the configuration terminal sets up an indoor unit communication network in the following manner:

step S71: and sending a setting instruction to the selected equipment.

After the multi-split air conditioning system is installed, a user or an installer selects a target room, and the wire controllers and the indoor units arranged in the room need to establish one or more indoor unit communication networks.

In practical application, a plurality of indoor unit communication networks need to be established, generally, one indoor unit communication network needs to be established for the line controller and the indoor units in one room, and different indoor unit communication networks are established for different rooms; even if at least two line controllers are distributed in one room, and each line controller controls different indoor units, at least two indoor unit communication networks need to be constructed by combining the line controllers and the indoor units to be controlled.

And selecting one device from the relation list between the devices displayed by the configuration terminal and the Bluetooth MESH module, wherein the device is a wire controller or any indoor unit.

When the selected device is a wire controller, setting the command to be a command executed by the wire controller, such as turning on, or turning on and off, or flashing an indicator light, or displaying a designated icon or character; when the selected device is an indoor unit, the setting command is a command executed by the indoor unit, such as air supply, flashing of an indicator light, or display of a designated icon or character.

And executing the step S72 after selecting one device to issue the setting instruction, then returning to the step, selecting one device to issue the setting instruction again, then executing the step S72, and returning to the step until all the devices are traversed.

Step S72: and determining the networking relationship of the equipment based on whether the equipment executes the setting instruction.

The configuration terminal sends a setting instruction to the Bluetooth MESH module through Bluetooth connection in combination with the number or the identification of the Bluetooth MESH module associated with the equipment, the Bluetooth MESH module forwards the setting instruction to the equipment after receiving the setting instruction, and the equipment executes the setting instruction, so that a user or an installer can observe whether a line controller or an indoor unit generating actions is positioned in the target room; when a plurality of indoor unit communication networks need to be established in the target room, the indoor unit executing the setting instruction is further determined to be controlled by which line controller.

When more than one room needs to establish the indoor unit communication network, after the network establishment of the target room is completed, the next room is entered and the operation is carried out according to the same steps.

Step S73: and establishing an indoor unit communication network according to the determined networking relation.

After the networking relation of the indoor units in the target room is determined according to the step S71 and the step S72, namely the wire controller and the indoor units in the target room are determined, the wire controller and the indoor units are associated to establish an indoor unit communication network.

When a plurality of indoor unit communication networks need to be established, the steps from the step S71 to the step S73 are repeated.

In some embodiments of the present invention, in configuring an APP of a terminal, a manner is provided for a user or an installer to edit packet networking, as shown in fig. 8, where the manner includes:

1. and providing a control, a menu or a list which can edit the communication network of the indoor unit.

One or more indoor and communication networks may thus be created through controls, menus or lists, with the network being numbered at the time of creation.

2. And creating an indoor unit communication network framework.

The network frames are numbered according to the order of creation.

3. And selecting one device from the relationship list of the devices and the Bluetooth MESH module.

And at the same time of selection, the configuration APP sends a setting instruction to the Bluetooth MESH module assembled on the equipment through Bluetooth connection, when the equipment is a wire controller, the setting instruction of the wire controller is sent, and when the equipment is an indoor unit, the setting instruction of the indoor unit is sent.

4. And observing whether the equipment executing the setting instruction belongs to the created indoor unit communication network.

If yes, entering step 5, otherwise, returning to step 3.

5. And dragging the equipment for executing the set instruction into the built indoor unit communication network framework.

6. And returning to the step 3 until all the devices are traversed.

7. And (3) returning to the step (2) when a plurality of indoor unit communication networks need to be established.

In some embodiments of the present invention, in configuring an APP of a terminal, a further manner is provided for a user or an installer to edit packet networking, as shown in fig. 9, where the method includes:

1. and providing a control, a menu or a list which can edit the communication network of the indoor unit.

One or more indoor and communication networks can thus be created through controls, menus or lists, with the network being numbered at the time of creation.

2. And determining the network number N of the indoor unit communication network to be created.

3. And creating N indoor unit communication network frames according to the network number N.

The network frames are numbered according to the order of creation.

4. And selecting one device from the relationship list of the devices and the Bluetooth MESH module.

And at the same time of selection, the configuration APP sends a setting instruction to the Bluetooth MESH module assembled on the equipment through Bluetooth connection, when the equipment is a wire controller, the setting instruction of the wire controller is sent, and when the equipment is an indoor unit, the setting instruction of the indoor unit is sent.

5. And observing the indoor unit communication network to which the equipment executing the setting command belongs.

That is, it is determined to which indoor unit communication network the device executing the setting instruction belongs.

6. And dragging the equipment for executing the set instruction into the determined indoor unit communication network framework.

7. And returning to the step 4 until all the devices are traversed.

The configuration terminal completes grouping and building of the indoor and outdoor unit communication networks and the indoor unit communication networks based on the content, assigns network identifications or numbers for the built networks, and allocates multicast addresses and unicast addresses to equipment in the networks, wherein the equipment comprises an outdoor unit, a line controller and each indoor unit, and the embodiment shown in the table two is as follows:

watch 2

	Eight higher bits of multicast address	Low eight bits of multicast address	Eight upper bits of unicast address	Lower eight bits of unicast address
					Address	C0H	System number	00H	Automatic sequence generation

As shown in fig. 10, the configuration terminal sends the packet success status information to each bluetooth MESH module through bluetooth connection, and each bluetooth MESH module forwards the packet success status information to the corresponding device; the packet success status information includes, but is not limited to, networking instructions, a multicast address, and a unicast address.

The outdoor Bluetooth MESH module, the line control Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module respectively store the multicast address and the unicast address which are allocated to the equipment by the configuration terminal when forwarding the grouping success state information to the equipment to which the equipment belongs, so that the equipment does not need to be networked again when being powered off and powered on.

In some embodiments of the present invention, the configuration terminal may cancel the packet through a cancel instruction, and the bluetooth MESH module clears the stored address information after the packet is cancelled.

In view of the fact that the configuration terminal completes packet networking, but the outdoor unit, the wire controller and the indoor unit cannot know networking relation, in the application of the invention, after the outdoor unit or the wire controller receives the packet success state information, whether the multicast address is zero or not is judged firstly, if the multicast address is zero, the packet is cancelled, and if the multicast address is not zero, the addressing operation in the same group of networks is started, so that the outdoor unit in the same group of networks can address the indoor unit, and the wire controller in the same group of networks can address the indoor unit.

As shown in fig. 11, the addressing operation of the outdoor unit includes:

1. the outdoor unit sends addressing request multicast through the outdoor Bluetooth MESH module.

2. And after the indoor unit in the same indoor and outdoor unit communication network receives the addressing request, a first addressing response is replied through the first indoor Bluetooth MESH module assembled by the indoor unit.

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

3. And the outdoor unit collects and stores the number and address information of the responded indoor units.

4. And the outdoor unit meets the requirement of multicast addressing for the second time.

5. And comparing whether the number and the address of the indoor units of the response collected after the two addressing are consistent or not.

Completing addressing of the indoor unit and the outdoor unit when the addressing is consistent; and when the indoor units are inconsistent, repeating the multicast addressing requirement and the comparison step until the number and the address of the collected responded indoor units are consistent.

As shown in fig. 12, the addressing operation of the line controller includes:

1. the line controller sends addressing request multicast through the line control Bluetooth MESH module.

2. And after the indoor units in the same indoor unit communication network receive the addressing request, replying a second addressing response through the second indoor Bluetooth MESH module assembled by the indoor units.

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

3. The wire controller collects and stores the number and address information of the responded indoor units.

4. And the wire controller multicasts the addressing requirement for the second time.

5. And comparing whether the number and the address of the indoor units of the response collected after the two addressing are consistent or not.

When the line controller and the indoor unit are consistent, the addressing of the line controller and the indoor unit is completed; and repeating the multicast addressing requirement and the comparison step when the indoor units are inconsistent until the number and the addresses of the collected responded indoor units are consistent.

In order to prevent the communication conflict of the indoor unit addressing response, in some embodiments of the present invention, the first indoor MESH module or the second indoor MESH module adopts random time response when replying the first addressing response or the second addressing response, so as to increase the success rate of addressing.

After the addressing, off-premises station and indoor set, line accuse ware and indoor set all can get into normal communication, wherein:

the outdoor unit and the indoor unit communicate with each other, and the communication includes: and the outdoor unit polls the indoor units in the same indoor and outdoor unit communication network, and the indoor units in the same indoor and outdoor unit communication network respond after receiving the polling message.

The communication between the wire controller and the indoor unit comprises: the line controller polls the indoor unit in the communication network with the indoor unit, and the indoor unit in the communication network with the indoor unit responds after receiving the polling message.

Based on the multi-split air conditioning system provided by the invention, the outdoor unit and the indoor unit are in wireless communication connection, and the outdoor unit and the indoor unit in the indoor and outdoor unit communication network can realize intelligent multicast communication or unicast communication based on the characteristics of node relay, ad hoc network, safety and the like of the Bluetooth MESH module; the wire controller is in wireless communication connection with the indoor unit, 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 characteristics of node relay, ad hoc network, safety and the like of the Bluetooth MESH module, so that the difficulty of installation and wiring is reduced, an intelligent gateway is not needed, and the acquisition cost of the system is reduced.

Based on the multi-split air conditioning system provided by the invention, the intelligent communication of all devices in the system is realized, and a plurality of functions of the existing multi-split air conditioning system are realized. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.

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

The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

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.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (10)

1. A multi-split air conditioning system comprising:

the system comprises an outdoor unit, a plurality of indoor units and a wire controller;

it is characterized by also comprising:

the outdoor Bluetooth MESH module is arranged in the outdoor unit;

the line control Bluetooth MESH module is arranged in the line controller;

the first indoor Bluetooth MESH module is arranged in each indoor unit; the Bluetooth MESH module and the outdoor Bluetooth MESH module form an indoor and outdoor machine communication network;

the second indoor Bluetooth MESH module is arranged in each indoor unit; the Bluetooth MESH module and the wire control module form an indoor unit communication network;

a configuration terminal for:

searching an outdoor Bluetooth MESH module, a drive-by-wire Bluetooth MESH module, a first indoor Bluetooth MESH module and a second indoor Bluetooth MESH module;

receiving outdoor unit information, line controller information, indoor unit first information and indoor unit second information which are reported by an outdoor Bluetooth MESH module, a line control Bluetooth MESH module, a first indoor Bluetooth MESH module and a 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;

and establishing an indoor unit communication network based on the second indoor unit information and the wire controller information.

2. The multi-split air conditioning system as claimed in claim 1, wherein the configuration terminal establishes and displays a correspondence relationship between the outdoor unit and the outdoor bluetooth MESH module, between the line controller and the bluetooth MESH module, between each indoor unit and the first and second bluetooth MESH modules assembled with the indoor unit, after receiving the outdoor unit information, the line controller information, the first indoor unit information, and the second indoor unit information.

3. The multi-split air conditioning system as claimed in claim 2, wherein the outdoor unit information includes a system number of an outdoor unit, and the first indoor unit information includes a system number of an indoor unit;

when the configuration terminal is used for establishing an indoor and outdoor unit communication network, the configuration terminal comprises:

and according to the system number of the outdoor unit and the system number of the indoor unit, grouping the indoor units and the outdoor units with the same system number to form an indoor and outdoor unit communication network.

4. The multi-split air conditioning system as claimed in claim 2, wherein the line controller information includes a device type thereof, and the second indoor unit information includes a device type thereof;

when the configuration terminal establishes the indoor unit communication network, the following steps are repeated to determine the equipment networking relationship, and the indoor unit communication network is established according to the determined networking relationship:

respectively sending a setting instruction to each device; the equipment is a wire controller or any indoor unit;

and determining the networking relationship of the equipment based on whether the equipment executes the setting instruction.

5. The multi-split air conditioning system as claimed in claim 3, wherein the outdoor unit reports its own system number to its outdoor bluetooth MESH module when powered on; and (c) a second step of,

when each indoor unit is powered on, the system number of each indoor unit is reported to the first indoor Bluetooth MESH module assembled by the indoor unit.

6. The multi-split air conditioning system as claimed in claim 1, wherein the configuration terminal issues grouping success status information to each device after the indoor and outdoor unit communication networks and the indoor unit communication network are established; the equipment comprises an outdoor unit, a wire controller and indoor units; the grouping success state information comprises a multicast address and a unicast address; and the number of the first and second groups,

the outdoor Bluetooth MESH module, the line control Bluetooth MESH module, the first indoor Bluetooth MESH module and the second indoor Bluetooth MESH module respectively store the multicast address and the unicast address.

7. The multi-split air conditioning system as claimed in claim 6, wherein the outdoor unit sends an addressing request multicast through the outdoor bluetooth MESH module, and after the indoor unit in the same communication network of the indoor and outdoor units receives the addressing request, a first addressing response is replied through the first indoor bluetooth MESH module assembled with the indoor unit, and the first addressing response includes address information of the indoor unit;

the outdoor unit collects and stores the number and address information of the responded indoor units; and (c) a second step of,

the outdoor unit multicast addressing requirement for the second time is compared with whether the number and the address of the response indoor units collected after the addressing for the second time are consistent or not, and the addressing of the indoor unit and the outdoor unit is completed when the number and the address of the response indoor units collected after the addressing for the second time are consistent; and repeating the multicast addressing requirement and the comparison step when the indoor units are inconsistent until the number and the addresses of the collected responded indoor units are consistent.

8. The multi-split air conditioning system according to claim 6, wherein the line controller sends an addressing request multicast through the line control bluetooth MESH module, and after the indoor units in the same indoor unit communication network receive the addressing request, a second addressing response is replied through the second indoor bluetooth MESH module assembled by the indoor units, and the second addressing response includes address information of the indoor units;

the wire controller collects and stores the number and address information of the responded indoor units; and the number of the first and second groups,

the wired controller multicasts the addressing requirement for the second time, compares whether the number and the address of the indoor units of the response collected after the addressing for the second time are consistent, and completes the addressing of the wired controller-the indoor units when the number and the address are consistent; and repeating the multicast addressing requirement and the comparison step when the indoor units are inconsistent until the number and the addresses of the collected responded indoor units are consistent.

9. The multi-split air conditioning system as claimed in claim 7 or 8, wherein the first or second indoor MESH module employs a random time response when replying to the first or second addressing response.

10. The multi-split air conditioning system as claimed in claim 9, wherein the outdoor unit and the indoor unit communicate with each other, comprising: the outdoor unit polls the indoor units in the same indoor and outdoor unit communication network, and the indoor units in the same indoor and outdoor unit communication network respond after receiving the polling message;

the communication between the wire controller and the indoor unit comprises: the line controller polls the indoor unit in the communication network with the indoor unit, and the indoor unit in the communication network with the indoor unit responds after receiving the polling message.

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