Control method and device of multi-split air conditioning system and multi-split air conditioning system

Abstract

The present invention discloses a control method, a device and a multi-split air conditioning system, and belongs to the field of air conditioning technology. The control method comprises: obtaining the operation mode setting information selected by the user of all indoor units in the same room; if there are at least two indoor units in operation in the same room, and the operation mode setting information of the first indoor unit of at least two indoor units is a windless mode, then all the first indoor units in the same room are controlled to operate in a windless mode, and all the second indoor units in the same room are controlled to operate in a preset mode; wherein the first indoor unit has a windless mode for the user to select, and the second indoor unit does not have a windless mode for the user to select. The present invention can make the air parameters in the same air-conditioned room balanced and adjusted.

Description

Technical Field

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

[0002] In the related art, in a large room, more than two indoor units are required to be arranged in different areas of the same room for cooling and regulation.

[0003] However, since users in different areas have different demands for temperature and wind sensation, the temperature, wind sensation and other parameters in different areas of the same air-conditioned room vary greatly. Summary of the invention

[0004] The main purpose of the present invention is to provide a control method and device for a multi-split air-conditioning system and a multi-split air-conditioning system, aiming to solve the technical problem in the prior art that parameters such as temperature and wind sensation vary greatly in different areas of the same air-conditioned room.

[0005] To achieve the above object, the present invention proposes a control method for a multi-split air conditioning system, the method comprising the following steps:

[0006] Obtaining the user-selected operation mode setting information of all indoor units in the same room;

[0007] If at least two indoor units are in operation in the same room, and the operation mode setting information of the first indoor unit among the at least two indoor units is the windless mode, all the first indoor units in the same room are controlled to operate in the windless mode, and all the second indoor units in the same room are controlled to operate in the preset mode;

[0008] The first indoor unit has a windless mode for the user to select, and the second indoor unit does not have a windless mode for the user to select.

[0009] In one embodiment, the step of controlling all second indoor units in the same room to run a preset mode includes:

[0010] Obtaining a target temperature of each second indoor unit according to the indoor temperature of the first area of ​​the first indoor unit and the second set temperature of the second indoor unit;

[0011] The second indoor unit is controlled to operate in a cooling mode until the indoor temperature of the second area of ​​the second indoor unit reaches a target temperature.

[0012] In one embodiment, the step of obtaining the target temperature of each second indoor unit according to the indoor temperature of the first area and the second set temperature includes:

[0013] When the indoor temperature of the first area is less than or equal to the perceived comfort temperature, the target temperature of each second indoor unit is the perceived comfort temperature;

[0014] When the indoor temperature of the first area is greater than the perceived comfort temperature, the target temperature of each second indoor unit is the minimum value between the perceived comfort temperature and the second set temperature.

[0015] In one embodiment, before the step of controlling the second indoor unit to operate in a cooling mode until the indoor temperature of the second area of ​​the second indoor unit reaches the target temperature, the method further includes:

[0016] Determining the fan gear position of the second indoor unit according to the indoor temperature of the second area of ​​the second indoor unit and the second set temperature;

[0017] Control the fan of the second indoor unit to operate according to the fan gear position.

[0018] In one embodiment, before the step of determining the fan gear position of the second indoor unit according to the difference between the indoor temperature of the second area and the second set temperature, the method further includes:

[0019] Determine whether the user of the second indoor unit has selected to set the fan gear;

[0020] If the user chooses to set the fan gear, the fan of the second indoor unit is controlled to run according to the set fan gear;

[0021] The step of determining the fan gear position of the second indoor unit according to the difference between the indoor temperature of the second area and the second set temperature includes:

[0022] If the user does not set the fan gear, the fan gear of the second indoor unit is determined according to the difference between the indoor temperature of the second area and the second set temperature.

[0023] In one embodiment, there are at least two second indoor units in the same room;

[0024] Before the step of controlling the second indoor unit to operate in a cooling mode until the indoor temperature of the second area of ​​the second indoor unit reaches a target temperature, the method further includes:

[0025] According to the infrared detection information of each first indoor unit, a main second indoor unit relatively close to the user and an auxiliary second indoor unit relatively far from the user are obtained among at least two second indoor units;

[0026] The target temperature of each second indoor unit is updated so that the target temperature of the main second indoor unit is lower than the target temperature of the auxiliary second indoor unit.

[0027] In one embodiment, the step of controlling all first indoor units in the same room to operate in a windless mode includes:

[0028] Determine a recommended value of windless superheat of an electronic expansion valve of the first indoor unit according to the regional relative humidity of the first indoor unit;

[0029] According to the recommended value of the no-wind superheat, the electronic expansion valve is controlled to operate, the air guide plate of the first indoor unit is controlled to rotate to the no-wind angle, and the fan of the first indoor unit is controlled to operate according to the no-wind interval windshield.

[0030] In one embodiment, before the step of controlling the fan of the first indoor unit to operate according to the windshield in the no-wind zone, the method further includes:

[0031] Determining whether a user of the first indoor unit has selected to set a wind speed;

[0032] If the user chooses to set the wind speed, the fan of the first indoor unit is controlled to run according to the set wind speed;

[0033] The step of controlling the fan of the first indoor unit to operate according to the windshield in the no-wind zone includes:

[0034] If the user does not choose to set the wind speed, the fan of the first indoor unit is controlled to operate according to the windshield in the no-wind zone.

[0035] In one embodiment, before the step of controlling the operation of the electronic expansion valve according to the recommended value of the no-wind superheat, the method further includes:

[0036] When the first set temperature is less than or equal to the perceived comfort temperature, the perceived comfort temperature is used as the judgment temperature of the first indoor unit;

[0037] When the first set temperature is greater than the perceived comfort temperature, the first set temperature is used as the judgment temperature of the first indoor unit;

[0038] If the indoor temperature of the first area is greater than the judgment temperature, or the relative humidity of the area is greater than a preset threshold, the first indoor unit is controlled to operate in a cooling mode;

[0039] The steps of controlling the opening of the electronic expansion valve according to the recommended value of the no-wind superheat include:

[0040] If the indoor temperature of the first area is lower than the judgment temperature and the relative humidity of the area is lower than the preset threshold, the electronic expansion valve is controlled to operate according to the recommended value of windless superheat.

[0041] In one embodiment, there are at least two first indoor units in the same room;

[0042] The steps for controlling all first indoor units in the same room to operate in windless mode include:

[0043] According to the infrared detection information of each first indoor unit, a main first indoor unit relatively close to the user and an auxiliary first indoor unit relatively far from the user are obtained among at least two first indoor units;

[0044] Control the main first indoor unit to operate in the windless mode, and control the auxiliary first indoor unit to operate in the cooling mode at the same time;

[0045] After the auxiliary first indoor unit operates in the cooling mode for a preset period of time, the auxiliary first indoor unit is controlled to operate in the windless mode.

[0046] In a second aspect, the present invention further provides a control device for a multi-split air conditioning system, comprising:

[0047] A mode acquisition module, used to obtain the operation mode setting information selected by the user of all indoor units in the same room;

[0048] A mode control module, for controlling all first indoor units in the same room to operate in the no-wind mode, and controlling all second indoor units in the same room to operate in the preset mode, if at least two indoor units in the same room are in operation and the operation mode setting information of the first indoor unit among the at least two indoor units is the no-wind mode;

[0049] The first indoor unit has a windless mode for the user to select, and the second indoor unit does not have a windless mode for the user to select.

[0050] In a third aspect, the present invention further provides a multi-split air-conditioning system, which includes a memory and a processor; wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the above-mentioned control method.

[0051] The technical solution of the present invention controls all first indoor units in the same room that can operate the windless mode to operate in the windless mode when it detects that the operating mode setting information of at least one indoor unit is selected as the windless mode by the user, and controls the remaining second indoor units in the same room to operate according to the preset mode, so that all indoor units in the same air-conditioned room cooperate with each other to jointly adjust the temperature and windiness of all air in the room to a comfortable level. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0053] Figure 1 It is a schematic diagram of installing multiple indoor units in an air-conditioned room in a multi-split air-conditioning system of the present invention;

[0054] Figure 2A schematic flow chart of a first embodiment of a control method for a multi-split air conditioning system according to the present invention;

[0055] Figure 3 A schematic flow chart of a second embodiment of a control method for a multi-split air conditioning system according to the present invention;

[0056] Figure 4 A schematic diagram of fan gear positions of a second embodiment of a control method for a multi-split air conditioning system of the present invention;

[0057] Figure 5 A schematic flow chart of a third embodiment of a control method for a multi-split air conditioning system according to the present invention;

[0058] Figure 6 A schematic flow chart of a fourth embodiment of a control method for a multi-split air conditioning system according to the present invention;

[0059] Figure 7 A schematic diagram of humidity ranges of a fourth embodiment of a control method for a multi-split air conditioning system according to the present invention;

[0060] Figure 8 A schematic flow chart of a fifth embodiment of a control method for a multi-split air conditioning system according to the present invention;

[0061] Fig. 9 A schematic diagram of the functional modules of the control device of the multi-split air conditioning system of the present invention;

[0062] Fig.10 It is a schematic diagram of a multi-split air conditioning system of the present invention.

[0063] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0064] 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 the present invention.

[0065] In the related art, some air-conditioning indoor units have a windless structure, so that a windless mode can be provided. The control panel or controller of these air-conditioning indoor units has corresponding selectable instructions, and the user can select the windless mode to control the air-conditioning indoor unit to operate in the windless mode. However, for large-space buildings, multiple air-conditioning indoor units need to be installed in the same air-conditioned room for air conditioning to meet the cooling needs. At this time, it is difficult for an air conditioner in the same air-conditioned room to operate in windless mode to meet the air conditioning needs in the room, such as different temperatures or wind sensations in different areas, making it difficult to meet the needs of different users in the same room.

[0066] For example, in a conference room, two indoor units are installed in the room, one of which is a windless indoor unit that operates in windless mode, while the other is an ordinary indoor unit that operates according to the cooling mode set by the user. If the setting parameters of the two differ greatly, it will inevitably lead to large differences in perceived temperature and wind sensation in different areas of the conference room.

[0067] To this end, an embodiment of the present invention provides a control method for a multi-split air-conditioning system. When it is detected that at least one indoor unit is set to operate in the windless mode by the user, all the first indoor units in the room that can operate in the windless mode are controlled to operate in the windless mode, and the remaining second indoor units in the room are controlled to operate according to the preset mode, so that all the indoor units in the same air-conditioned room cooperate with each other to jointly adjust the temperature and windiness of all the air in the room to a comfortable level.

[0068] The inventive concept of the present application is further described below in conjunction with some specific embodiments.

[0069] The present invention provides a first embodiment of a control method for a multi-split air conditioning system. Figure 1 , Figure 1 It is a flowchart of a first embodiment of a control method for a multi-split air conditioning system according to the present invention.

[0070] This embodiment is used for a multi-split air conditioning system, which includes at least two indoor units installed in a room, the at least two indoor units including at least one first indoor unit 1, and the first indoor unit 1 has a windless mode for the user to select. Specifically, the multi-split air conditioning system can cool multiple air-conditioned rooms, and at least one indoor unit is installed in each air-conditioned room. Among them, at least one of the multiple air-conditioned rooms is installed with the first indoor unit 1 and the second indoor unit 2. The first indoor unit 1 has a windless structure, so that it can have a windless mode for the user to select.

[0071] For example, a "no wind" button is provided on the control panel of the first indoor unit 1 or the control panel of the controller connected to the first indoor unit 1. The user can click on the "no wind" button to enter the no wind mode, so as to select the first indoor unit 1 to operate in the no wind mode. It is understandable that the user can also set the first indoor unit 1 to operate in other modes, such as cooling mode or heating mode.

[0072] The at least two indoor units further include at least one second indoor unit, and the second indoor unit does not have a windless mode for the user to select.

[0073] The second indoor unit 2 does not have a windless sensing structure, so it cannot run in the windless sensing mode. At this time, there is no "windless sensing" button on the control panel of the second indoor unit 2 or the control panel of the controller connected to the second indoor unit 2. The user cannot actively set the second indoor unit to run in the windless sensing mode. It can be understood that the second indoor unit 2 is an ordinary indoor unit, which only has a cooling mode or a heating mode.

[0074] In this embodiment, the control method includes the following steps:

[0075] Step S100: Acquire the operation mode setting information selected by the user of all indoor units in the same room.

[0076] Each outdoor unit, switching device, and indoor unit in the multi-split system has a corresponding virtual address. In this step, after the multi-split air-conditioning system is turned on, the outdoor air-conditioning unit or the controller of the air-conditioning system can send a detection instruction to each indoor unit to obtain the operating mode set by the user of each indoor unit. The outdoor air-conditioning unit summarizes the operating modes set by the users of all indoor units in the multi-split air-conditioning system. The operating mode setting information reflects the mode requirements of the user in the air-conditioned room where the indoor unit is located.

[0077] The operation mode setting information includes "energy demand: cooling mode", "energy demand: heating mode" or "no energy demand", etc. It can be understood that for the first indoor unit 1, the operation mode setting information also includes: "energy demand: no wind mode". It is worth mentioning that the no wind mode can be turned on during heating or cooling. The cooling mode is specifically described below. Those skilled in the art can easily think of the situation of the no wind mode during heating.

[0078] The air conditioner outdoor unit can check the virtual addresses of each indoor unit, so as to identify the indoor units in the same room to determine whether there are at least two indoor units in operation in the same room, and the operation mode setting information of the first indoor unit 1 among at least two indoor units is the windless mode.

[0079] Step S200: If at least two indoor units in the same room are in operation, and the operation mode setting information of the first indoor unit 1 among the at least two indoor units is the windless mode, then all the first indoor units in the same room are controlled to operate in the windless mode, and all the second indoor units in the same room are controlled to operate in the preset mode.

[0080] If the user turns on at least two indoor units in the same room, the two indoor units start to operate, including a first indoor unit 1, which is selected by the user to operate in a windless mode.

[0081] The outdoor unit of the air conditioner can generate a special no-wind sense flag electrical signal according to the virtual address assigned to each indoor unit. The outdoor unit of the air conditioner sends the special no-wind sense flag electrical signal to all indoor units in the room according to the virtual address of each indoor unit.

[0082] After each indoor unit receives the special no-wind flag electrical signal, it triggers all first indoor units in the room to operate in the no-wind mode. When all indoor units in the room are first indoor units 1, all first indoor units 1 operate in the no-wind mode, so that the wind sensation in each area of ​​the room can meet the needs of the user, which will not be repeated here.

[0083] It can be understood that in some specific embodiments, when there are at least two first indoor units in the same room, step S200 further includes the following steps:

[0084] Step A10, according to the infrared detection information of each first indoor unit, obtain the main first indoor unit relatively close to the user and the auxiliary first indoor unit relatively far from the user among at least two first indoor units.

[0085] Step A20: Control the main first indoor unit to operate in the windless mode, and control the auxiliary first indoor unit to operate in the cooling mode at the same time.

[0086] Step A30: After the auxiliary first indoor unit operates in the cooling mode for a preset period of time, the auxiliary first indoor unit is controlled to operate in the windless mode.

[0087] In this embodiment, the distance information between the user and the indoor unit can be obtained through the infrared detection information monitored in real time by the infrared sensor on each first indoor unit. At this time, the distribution of users in the same room can be obtained by integrating the data uploaded by all infrared sensors, so as to identify the relative position of the user and each indoor unit. The infrared sensor can also periodically detect and upload the infrared data obtained by the detection, which is used to regularly analyze the distribution of users in the same room.

[0088] It is understandable that the user may be a single user, in which case the infrared rays emitted by a single user are relatively concentrated and easy to identify. The user may also be multiple users, in which case the area with the most concentrated infrared rays is treated as the area where the user is located, and the other scattered infrared areas can be ignored.

[0089] According to the infrared detection information of all indoor units, it can be determined which of all the first indoor units in the room is closer to the user, and it is regarded as the main first indoor unit, and the other first indoor units that are farther away from the user are regarded as auxiliary second indoor units. At this time, the user's body sensation is more affected by the main first indoor unit. Therefore, at this time, the main first indoor unit needs to enter the windless mode first to meet the user's windless demand. The auxiliary second indoor unit can first cool to meet the cooling and dehumidification and anti-condensation needs of the area. The auxiliary second indoor unit can run cooling for a period of time before entering the windless mode.

[0090] It is understandable that the preset duration may be set according to specific circumstances, or may be a recommended value set by the manufacturer, and this embodiment does not impose any limitation on this.

[0091] For example, if there are only three indoor units installed from the left in a large room, the leftmost and middle indoor units have a windless feeling. The rightmost indoor unit is a common indoor unit. The user is closer to the leftmost indoor unit in the large room.

[0092] At this time, the leftmost indoor unit can first enter the windless mode to meet the user's windless demand.

[0093] The middle indoor unit can first run in cooling mode for 2 minutes and then run in windless mode to meet the cooling and dehumidification and anti-condensation needs of the large room.

[0094] The special windless flag electrical signal also triggers all second indoor units in the room to run in a preset mode to cooperate with the first indoor unit to adjust the air in the room.

[0095] The indoor units of the remaining rooms continue to operate in the operation mode selected by the user, such as cooling mode or heating mode, without change.

[0096] For example, when the user turns on the cooling in the conference room, all the running indoor units will pass the operating mode set by the user to the outdoor unit. The outdoor air conditioner will summarize, and as long as it is found that there are multiple indoor units running in the conference room, and one first indoor unit 1 is selected as the windless mode by the user, then all the first indoor units in the conference room will run in the windless mode, and all the second indoor units in the conference room will run in the preset mode. The outdoor air conditioner will continue to run in the cooling mode, and the indoor units in other rooms will still run in the mode selected by the user.

[0097] If the judgment condition is not satisfied, that is, there are not at least two indoor units in operation in the same room, and the operation mode of the first indoor unit 1 of the at least two indoor units is set to the windless mode, then the air conditioner outdoor unit does not affect the operation of each indoor unit, and each indoor unit still operates according to the mode set by the user. In addition, the air conditioner outdoor unit can always operate in the cooling mode.

[0098] Based on the above steps, this embodiment, when it is detected that the operation mode setting information of at least one indoor unit is selected as the windless mode by the user, all first indoor units in the same room that can operate the windless mode are operated in the windless mode, and the remaining second indoor units in the same room are operated according to the preset mode. Thus, the indoor units in the same air-conditioned room cooperate with each other to jointly adjust the temperature and windiness of all the air in the room to a comfortable level.

[0099] Furthermore, based on the first embodiment of the control method of the present invention, a second embodiment of the control method of the multi-split air conditioning system of the present invention is proposed. Figure 3 , Figure 3 Schematic diagram of the flow chart of the second embodiment of the control method of the present invention.

[0100] In this embodiment, the step of controlling all second indoor units in the same room to run the preset mode includes:

[0101] Step S201: Obtain a target temperature of each second indoor unit according to the indoor temperature of the first area of ​​the first indoor unit and the second set temperature of the second indoor unit.

[0102] In this embodiment, the operation mode setting information also includes the first area indoor temperature of the area facing the first indoor unit 1, the second set temperature T of the second indoor unit SC And other information.

[0103] See also Figure 1 In this step, the air conditioning system can detect the indoor temperature of each area through the temperature sensing package set at the corresponding position. The indoor temperature of the first area of ​​the first indoor unit 1 has a corresponding windless area, and the temperature of the windless area is the indoor temperature T of the first area of ​​the first indoor unit 1. w1 .

[0104] The second set temperature is the operating target temperature set by the user for the second indoor unit 2, which can be expressed as T SC .

[0105] Specifically, step S201 includes:

[0106] (1) When the indoor temperature of the first area is less than or equal to the perceived comfort temperature, the target temperature of each second indoor unit 2 is the perceived comfort temperature.

[0107] (2) When the indoor temperature of the first area is greater than the perceived comfort temperature, the target temperature of each second indoor unit 2 is the minimum value between the perceived comfort temperature and the second set temperature.

[0108] Specifically, taking the comfortable temperature of 26°C as an example, T w1 >26℃, T S2 =min{T SC , 26}.

[0109] It is easy to understand that the first indoor unit operates in windless mode mainly to meet the user's demand for windless feeling, but the temperature needs to be lowered before windless feeling is achieved, and in high humidity conditions, cooling and dehumidification are still required to avoid condensation, and then enter windless mode after the conditions are met.

[0110] At this time, T w1 >26℃, when the room still needs cooling, cooling and dehumidification. Therefore, the smaller value between the perceived comfort temperature and the second set temperature is selected as the temperature target of the second indoor unit.

[0111] T w1 ≤26℃, T S2 =26; where T S2 is the target temperature.

[0112] At this time, the cooling temperature in the room is already lower than the perceived comfort temperature. If the smaller value between the perceived comfort temperature and the set temperature of the second indoor unit is selected as the target temperature of the second indoor unit, the indoor temperature will continue to drop, affecting the user experience. Therefore, the perceived comfort temperature can be used as the target temperature of the second indoor unit, and the second indoor unit can be shut down after the air in the facing area reaches the perceived comfort temperature. This not only improves the user's experience comfort, but also reduces energy consumption.

[0113] It can be understood that the specific value of the perceived comfortable temperature can be set by the user and is not limited here.

[0114] Step S202: Control the second indoor unit 2 to operate in cooling mode until the indoor temperature of the second area of ​​the second indoor unit 2 reaches the target temperature.

[0115] For the second indoor unit 2 fixedly installed in the same room, the area affected is also determined. Therefore, the temperature of this area can be represented by the second area indoor temperature T1. When T1<T SC When the temperature of the second indoor unit 2 reaches a certain level, it will shut down.

[0116] It is understandable that due to the influence of factors such as detection error, a constant can be introduced to better match the actual situation in the room. At this time, this step can be expressed as when T1<T SC-C3, the room temperature in the second zone reaches the required temperature and the system shuts down.

[0117] In this embodiment, the first indoor unit 1 with a windless structure is mainly used to meet the windless demand of users in the windless area of ​​the first indoor unit 1, while the cooling demand and anti-condensation demand in the same room are met by the second indoor unit 2.

[0118] Therefore, in this embodiment, the second indoor unit 2 installed in the room cools quickly to reduce the indoor temperature in the room. In order to prevent the second indoor unit 2 from affecting the indoor temperature of the first area too much, the target temperature of the second indoor unit 2 is associated with the indoor temperature of the first area.

[0119] It can be understood that, since the second indoor unit 2 in this embodiment is used for rapid cooling to reduce the indoor temperature of the room, in some specific embodiments, when there are at least two second indoor units in the same room, after step S201, the following steps are also included:

[0120] Step B10: According to the infrared detection information of each first indoor unit, a main second indoor unit relatively close to the user and an auxiliary second indoor unit relatively far from the user are obtained among at least two second indoor units.

[0121] Step B20: Update the target temperature of each second indoor unit so that the target temperature of the main second indoor unit is lower than the target temperature of the auxiliary second indoor unit.

[0122] In this embodiment, the distribution of users in the same room can be obtained by integrating the data uploaded by all infrared sensors, so as to identify the relative position of the users and each indoor unit. Specifically, the distance information of the users from the indoor unit can be obtained through the infrared detection information monitored in real time by the infrared sensor on each second indoor unit.

[0123] It can be understood that the user may be a single user or multiple users. When there are multiple users, the area with the highest infrared concentration is treated as the area where the user is located.

[0124] According to the infrared detection information uploaded by all the second indoor units, it can be determined which of all the second indoor units in the room is closer to the user, and it is regarded as the main second indoor unit, and the other second indoor units farther from the user are regarded as auxiliary second indoor units.

[0125] The main second indoor unit is used to quickly lower the temperature of the user's area when the first indoor unit is running without wind, so as to avoid condensation due to excessive humidity in the windless area, or the cooling does not meet the user's needs. Therefore, after the temperature calculated in step S201, the value can be further corrected by a constant.

[0126] For example, the temperature of the main second indoor unit calculated according to step S201 is adjusted down to be 2 to 3° C. lower than the temperature of the other second indoor units calculated according to step S201.

[0127] In this way, the main second indoor unit can cool quickly and powerfully, and the air conditioner will deliver the main cooling capacity to this area. The auxiliary second indoor unit, which is farther away from the user, is also farther away from the windless area, so its cooling capacity can be weaker.

[0128] For example, in the same room, there are three indoor units arranged from left to right, of which the leftmost one is a windless indoor unit and the two on the right are common indoor units. The user is located in the area where the windless indoor units are located.

[0129] After calculating the target temperature of the two ordinary indoor units, the middle ordinary indoor unit can be set to cool down to 24°C. The rightmost ordinary indoor unit is set to cool down to 26°C. At this time, the second indoor unit in the middle can cool quickly and strongly, and the air conditioner will deliver the main cooling capacity to this area. The rightmost indoor unit, which is farther away from the user, is also farther away from the windless area, so its cooling capacity can be relatively weaker.

[0130] In this embodiment, based on the above steps, the wind feeling requirements of the users in the room are met by the operation of the first indoor unit with a windless structure, while the temperature requirements of the users are met by cooling through the ordinary second indoor unit. The two cooperate with each other, and the energy consumption of the air conditioning system is reduced on the basis of meeting the user's needs.

[0131] In this embodiment, in the preset mode, the fan control of the second indoor unit 2 is implemented by the following steps:

[0132] Step S203: Determine the fan gear position of the second indoor unit 2 according to the indoor temperature of the second area of ​​the second indoor unit and the second set temperature.

[0133] Step S204: Control the fan of the second indoor unit to operate according to the fan gear position.

[0134] Specifically, in this embodiment, according to Figure 4 Determine the specific wind speed of the second indoor unit 2. Figure 4 The middle vertical axis represents the indoor temperature T1 of the second zone and the second set temperature T SC The difference.

[0135] like Figure 4 As shown, when the second indoor unit 2 is operating in the preset windless mode, when the temperature in the room is on a decreasing curve:

[0136] When T1-T SC When the temperature is less than 3.5℃, the fan gear of the second indoor unit 2 is in the E range. At this time, the fan gear of the second indoor unit 2 is 80;

[0137] When T1-T SC When the temperature is less than 1.5℃, the fan gear of the second indoor unit 2 is in the D range. At this time, the fan gear of the second indoor unit 2 is 60;

[0138] When T1-T SC When the temperature is less than 1°C, the fan gear of the second indoor unit 2 is in the C range. At this time, the fan gear of the second indoor unit 2 is 40;

[0139] When T1-T SC When the temperature is less than 0.5℃, the fan gear of the second indoor unit 2 is in the B range. At this time, the fan gear of the second indoor unit 2 is gear 20;

[0140] When T1-T SC When the temperature is less than 0°C, the fan gear of the second indoor unit 2 is in the A range. At this time, the fan gear of the second indoor unit 2 is gear 1.

[0141] The second indoor unit 2 is running in the preset mode, and when the temperature in the room is on an upward curve:

[0142] When T1-T SC When the temperature is greater than or equal to 0.5°C, the fan gear of the second indoor unit 2 is in the B range. At this time, the fan gear of the second indoor unit 2 is gear 20;

[0143] When T1-T SC When the temperature is greater than or equal to 1°C, the fan gear of the second indoor unit 2 is in the C range. At this time, the fan gear of the second indoor unit 2 is 40;

[0144] When T1-T SC When the temperature is greater than or equal to 1.5°C, the fan gear of the second indoor unit 2 is in the D range. At this time, the fan gear of the second indoor unit 2 is 60;

[0145] When T1-T SC When the temperature is greater than or equal to 2°C, the fan gear of the second indoor unit 2 is in the E range. At this time, the fan gear of the second indoor unit 2 is 80;

[0146] When T1-T SC When the temperature is greater than or equal to 4°C, the fan gear of the second indoor unit 2 is in the F range. At this time, the fan gear of the second indoor unit 2 is 100.

[0147] It is worth mentioning that step S205 can be performed after step S202, and the specific timing is not limited in this embodiment.

[0148] For example, if the user in the conference room does not set the fan gear for the second indoor unit, the wind speed is dynamically adjusted according to T1. For example, at the beginning, T1 = 28°C, when the temperature in the room is on the downward curve, the fan gear of the second indoor unit 2 is in the E range, and at this time, the fan gear of the second indoor unit 2 is 80 gears.

[0149] For example, if the user sets the fan gear to gear 20, the fan of the second indoor unit 2 is controlled to run at gear 20.

[0150] In this embodiment, the fan of the second indoor unit operates at the above-mentioned fan gear position, which can improve the air flow in the room to reduce the risk of condensation in the first indoor unit, thereby increasing the service life of the indoor unit and improving the user experience of the indoor unit.

[0151] Further, based on the second embodiment of the control method of the multi-split air conditioning system of the present invention, a third embodiment of the control method of the present invention is provided. Figure 5 , Figure 5 Schematic diagram of the flow chart of the third embodiment of the control method of the present invention.

[0152] In this embodiment, step S200 includes:

[0153] Step S211: Determine whether the user of the second indoor unit 2 has chosen to set the fan gear.

[0154] Step S212: If the user chooses to set the fan gear, the fan of the second indoor unit 2 is controlled to operate according to the set fan gear.

[0155] Step S213: If the user has not set the fan gear, determine the fan gear of the second indoor unit 2 according to the difference between the indoor temperature of the second area and the second set temperature.

[0156] Step S214: Control the fan of the second indoor unit to operate according to the fan gear position.

[0157] In this embodiment, since the second indoor unit 2 is mainly responsible for the cooling demand and anti-condensation demand in the room, the requirement for wind feeling can be reduced. At this time, if the user has set the fan gear for the second indoor unit 2, the fan gear will be operated according to the user setting. At this time, the wind blown by the second indoor unit 2 will not affect the users in the windless area of ​​the first indoor unit 1.

[0158] Furthermore, the present invention provides a fourth embodiment of a control method for a multi-split air conditioning system. Figure 6 , Figure 6 1 is a flow chart of a fourth embodiment of a control method for a multi-split air conditioning system according to the present invention.

[0159] In this embodiment, controlling the first indoor unit 1 to operate in the windless mode includes the following steps:

[0160] Step S401: Determine a recommended value of windless superheat of an electronic expansion valve of the first indoor unit according to the regional relative humidity of the first indoor unit.

[0161] The relative humidity of the area is H1. In this step, the humidity range of the air of the first indoor unit 1 can be determined according to the actually measured value of H1. Then, the recommended value of Tnf (windless superheat) of the electronic expansion valve of the first indoor unit 1 is determined from the preset humidity range table.

[0162] Available Figure 7 The humidity range of the air in the first indoor unit 1 is determined. Figure 7 In the figure, the vertical axis is the regional relative humidity H1.

[0163] When the regional relative humidity H1 is on an upward curve:

[0164] When H1>75, the humidity interval is Hucr1;

[0165] When 65

[0166] When 55

[0167] When H1≤55, the humidity range is Hucr4.

[0168] When the regional relative humidity H1 is on a decreasing curve:

[0169] When H1>70, the humidity interval is Hucr1;

[0170] When 60

[0171] When 50

[0172] When H1≤50, the humidity range is Hucr4.

[0173] It can be understood that when the preset no wind mode is entered for the first time, it can be assumed by default that the regional relative humidity H1 is on an ascending curve.

[0174] The following table shows the preset humidity ranges. Tnf is the windless superheat.

[0175]

[0176] Therefore, in this step, the Tnf value of the electronic expansion valve can be directly determined by referring to the above table.

[0177] ​​​​Step S402: According to the recommended value of Tnf, the electronic expansion valve is controlled to operate, the air guide plate of the first indoor unit is controlled to rotate to a no-wind angle, and the fan of the first indoor unit is controlled to operate according to the no-wind interval windshield.

[0178] In this step, the opening of the electronic expansion valve is controlled according to the Tnf value. Under the action of the first indoor unit 1, the indoor temperature of the first area will still decrease. w1 <T S1 -C2, the electronic expansion valve is closed, that is, the indoor unit has lowered the indoor temperature to the required temperature and shut down. The value range of C2 is 1 to 3°C, such as 1°C. S1 is the judgment temperature of the first indoor unit.

[0179] In this step, the upper and lower air guide plates of the first indoor unit 1 are adjusted to the maximum cooling angle, and the vertical air guide strips are adjusted to the no-wind angle. The fan can be operated at the no-wind interval wind speed, such as the fan can be operated at the minimum wind speed of 1% wind speed in the no-wind interval.

[0180] Before step S402, the following steps may also be included:

[0181] (1) Determine whether the user of the first indoor unit 1 has selected a set wind speed.

[0182] (2) If the user selects to set the wind speed, the fan of the first indoor unit 1 is controlled to run according to the set wind speed;

[0183] At this time, step S402 adapts to:

[0184] If the user does not choose to set the wind speed, the fan of the first indoor unit 1 is controlled to operate according to the wind speed stop in the no-wind zone.

[0185] At this time, if the user sets the required wind speed through the control panel of the indoor unit or the wind speed setting button on the controller, the user's wishes will be followed to first meet the user's wind speed requirements. If the wind speed is not set, it will operate according to the value measured by the manufacturer in the laboratory.

[0186] Furthermore, the present invention provides a fifth embodiment of a control method for a multi-split air conditioning system. Figure 8 , Figure 8 1 is a flow chart of a fifth embodiment of a control method for a multi-split air conditioning system according to the present invention.

[0187] In this embodiment, controlling the first indoor unit 1 to operate in the windless mode includes the following steps:

[0188] Step S501: when the first set temperature is less than or equal to the perceived comfort temperature, the perceived comfort temperature is used as the judgment temperature of the first indoor unit 1.

[0189] Step S502: When the first set temperature is greater than the perceived comfort temperature, the first set temperature is used as the judgment temperature of the first indoor unit 1.

[0190] Specifically, T S >26℃, T S1 =T1;T S ≤26℃, T S1 =26°C. Where, T S1 To determine the temperature.

[0191] Step S503: If the indoor temperature of the first area is greater than the judgment temperature, or the relative humidity of the area is greater than a preset threshold, the first indoor unit 1 is controlled to operate in a cooling mode.

[0192] T w1 >T S1 +C1 or H1>85%, the temperature in the room fails to meet the user's needs, or the humidity has affected the operation of the indoor unit. Therefore, cooling and dehumidification are required first, and then the room can be operated in windless mode after the temperature and humidity meet the requirements. The value range of C1 is 1~5℃, and 1℃ can be selected.

[0193] For example, when the first set temperature is 26°C, the temperature is judged to be 26°C. The indoor temperature of the first area is 28°C> 26°C+1, and the relative humidity H1 of the area is 70, then the first indoor unit 1 is controlled to operate in the cooling mode, and when the temperature of the first area drops below 27°C, the windless mode is operated.

[0194] For example, when the first set temperature is 26° C., the temperature is judged to be 26° C. The indoor temperature of the first area is 26.5° C.> 26° C.+1, and the relative humidity H1 of the area is 70, then the first indoor unit 1 is controlled to enter the windless mode.

[0195] For example, when the first set temperature is 26°C, the temperature is judged to be 26°C. The indoor temperature of the first area is 26.5°C> 26°C+1, but the relative humidity H1 of the area is 86%, then the first indoor unit 1 is controlled to operate in the cooling mode, and when the temperature of the first area drops below 27°C, the windless mode is operated.

[0196] Step S504: if the indoor temperature of the first area is lower than the judgment temperature and the regional relative humidity is lower than the preset threshold, determine the recommended windless superheat value of the electronic expansion valve of the first indoor unit according to the regional relative humidity of the first indoor unit.

[0197] If T S1 -C2<T w1 <T S1+C1 and H1<85%, then you can enter the windless mode. Among them, the value range of C2 is 1~3℃, and 1℃ can be selected. At this time, the temperature and humidity in the room meet the requirements, and you can directly enter the windless mode.

[0198] For example, when the first set temperature is 26°C, the judgment temperature is also 26°C. In this scenario, the indoor temperature of the first area is T S1 -C2=25℃<T w1 =26.5℃<T S1 +C1=27℃, when the regional relative humidity is in windless mode, the regional relative humidity H1 can be assumed to be in an upward curve. Therefore, the humidity interval is Hucr2, and the corresponding windless superheat recommended value is 7. Then the opening of the electronic expansion valve of the first indoor unit is controlled according to the windless superheat recommended value of 7.

[0199] Step S505: According to the tnf recommended value, the electronic expansion valve is controlled to operate, the air guide plate of the first indoor unit is controlled to rotate to a no-wind angle, and the fan of the first indoor unit is controlled to operate according to the no-wind interval windshield.

[0200] In this embodiment, since the cooling is slow when the windless mode is running and condensation is easily generated in the first indoor unit 1, it is necessary to enter the windless mode again when the temperature meets the cooling demand or meets the conditions for preventing condensation, so as to meet the user's cooling demand and avoid condensation in the first indoor unit.

[0201] For ease of understanding, a specific embodiment is shown below:

[0202] There is a first indoor unit and a second indoor unit installed in the conference room. When the user turns on the cooling in the conference room, all the running indoor units will pass the running mode of the local units to the outdoor unit. The air conditioner outdoor unit will summarize and send a special no-wind flag electrical signal to both indoor units in the conference room as long as it is found that both indoor units in the conference room are running and the first indoor unit 1 is selected by the user as no-wind mode.

[0203] For the first indoor unit 1, the first set temperature T S =26℃, judge the temperature. In this scenario, the indoor temperature of the first area is T S1 -C2=25℃<T w1 =26.5℃<T S1+C1=27℃, its regional relative humidity H1 is 70, and when the windless mode is used for the first time, the regional relative humidity H1 can be assumed to be on an upward curve. Therefore, the humidity interval is Hucr2, and the corresponding windless superheat recommended value is 7. Then the opening of the electronic expansion valve of the first indoor unit is controlled according to the windless superheat recommended value of 7. In addition, if the user sets the wind speed 20 gear for the first indoor unit, the first indoor unit is controlled to operate at the wind speed 20 gear. At the same time, the upper and lower air guide plates of the first indoor unit 1 are adjusted to the maximum cooling angle, and the vertical air guide strips are set to the windless angle.

[0204] For the second indoor unit, the second set temperature is 25°C, and the indoor temperature of the first area is greater than 26°C. The target temperature of the second indoor unit 2 is determined as T S2 =min{6}=25℃. Control the second indoor unit 2 to run in cooling mode. At this time, if the user of the second indoor unit does not set the fan gear, the wind speed is dynamically adjusted according to the indoor temperature T1 of the second area. For example, at the beginning, T1=28℃, when the temperature in the room is on the downward curve, the fan gear of the second indoor unit 2 is in the E range, and at this time, the fan gear of the second indoor unit 2 is 80 gears.

[0205] Alternatively, in another specific implementation, a first indoor unit and a second indoor unit are installed in the conference room. For example, when the user turns on the cooling in the conference room, all the running indoor units transmit the operation mode setting information of the local units to the outdoor unit. The air conditioner outdoor unit summarizes, and as long as it is found that both indoor units in the conference room are running, and the first indoor unit 1 is selected by the user as the no-wind mode. Then the air conditioner outdoor unit sends a special no-wind flag electrical signal to both indoor units in the conference room.

[0206] For the first indoor unit 1, the first set temperature T S =26℃, judge the temperature T S1 =26℃. If the indoor temperature and humidity H1 of the first area is 70, the first indoor unit 1 is controlled to operate in cooling mode, and when the temperature of the first area drops below 27℃, the windless mode is operated. And when the windless mode is operated for the first time, it can be assumed by default that the regional relative humidity H1 is on an upward curve. Therefore, the humidity interval is Hucr2, and the corresponding recommended value of windless superheat is 7. Then the opening of the electronic expansion valve of the first indoor unit is controlled according to the recommended value of windless superheat of 7. In addition, if the user has not set a wind speed gear for the first indoor unit, the first indoor unit is controlled to operate at 1% wind speed in the windless interval. At the same time, the upper and lower air guide plates of the first indoor unit 1 are adjusted to the maximum cooling angle, and the vertical air guide strips are set to the windless angle.

[0207] For the second indoor unit, the second set temperature is 25°C, and the indoor temperature of the first area is greater than 26°C. The target temperature of the second indoor unit 2 is determined as TS2 =min{6}=25℃. Control the second indoor unit 2 to operate in cooling mode. At this time, if the user of the second indoor unit does not set the fan gear, the wind speed is dynamically adjusted according to the indoor temperature T1 of the second area. For example, at the beginning, T1=27℃, when the temperature in the room is on a downward curve, due to T1-T SC <1.5℃, the fan gear of the second indoor unit 2 is in the C range, at this time, the fan gear of the second indoor unit 2 is gear 40. In this process, if the user sets the fan gear to gear 20, the fan of the second indoor unit 2 is controlled to run at gear 20.

[0208] The embodiment of the present invention also provides a first embodiment of a control device for a multi-split air conditioning system, and the control device is used in the multi-split air conditioning system. Fig. 9 , Fig. 9 It is a schematic diagram of functional modules of the first embodiment of the control device of the present invention.

[0209] In this embodiment, the control device 100 includes:

[0210] The mode acquisition module 10 is used to acquire the operation mode setting information selected by the user of all indoor units in the same room.

[0211] The mode control module 20 is used to control all the first indoor units in the same room to operate in the windless mode, and control all the second indoor units in the same room to operate in the preset mode if at least two indoor units are in operation in the same room and the operation mode setting information of the first indoor unit among the at least two indoor units is the windless mode;

[0212] This embodiment is used for a multi-split air conditioning system, which includes at least two indoor units installed in a room, and the at least two indoor units include at least one first indoor unit 1. Specifically, the multi-split air conditioning system can cool multiple air-conditioned rooms, and at least one indoor unit is installed in each air-conditioned room. Among them, the first indoor unit 1 is installed in at least one room among the multiple air-conditioned rooms, and the second indoor unit 2 is also mixedly installed in the same space. The first indoor unit 1 has a windless structure, so that it can have a windless mode for users to select.

[0213] For example, a "no wind" button is provided on the control panel of the first indoor unit 1 or the control panel of the controller connected to the first indoor unit 1. The user can click on the "no wind" button to enter the no wind mode, so as to select the first indoor unit 1 to operate in the no wind mode. It is understandable that the user can also set the first indoor unit 1 to operate in other modes, such as cooling mode or heating mode.

[0214] The at least two indoor units further include at least one second indoor unit, and the second indoor unit does not have a windless mode for the user to select.

[0215] The second indoor unit 2 does not have a windless sensing structure, so it cannot run in the windless sensing mode. At this time, there is no "windless sensing" button on the control panel of the second indoor unit 2 or the control panel of the controller connected to the second indoor unit 2. The user cannot actively set the second indoor unit to run in the windless sensing mode. It can be understood that the second indoor unit 2 is an ordinary indoor unit, which only has a cooling mode or a heating mode.

[0216] In this embodiment, when the mode acquisition module 10 detects that the operating mode setting information of at least one indoor unit is selected as the windless mode by the user, the mode control module 20 controls all the first indoor units in the same room that can operate the windless mode to operate in the windless mode, and controls the remaining second indoor units in the same room to operate according to the preset mode, so that all the indoor units in the same air-conditioned room cooperate with each other to jointly adjust the temperature and windiness of all the air in the room to a comfortable level.

[0217] It should be noted that other specific implementations of the control device of the multi-split air conditioner can refer to the specific implementations of the control method of the multi-split system in the above embodiment, and will not be repeated here to avoid redundancy.

[0218] The embodiment of the present invention also provides a multi-split air conditioning system, referring to Fig.10 , Fig.10 The figure is a schematic diagram of the structure of an electronic device involved in an embodiment of the present invention.

[0219] The electronic device comprises: at least one processor 301, a memory 302, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the above control method.

[0220] The processor 301 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 301 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 301 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state.

[0221] The memory 302 may include one or more computer-readable storage media, which may be non-transitory. The memory 302 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 302 is used to store at least one instruction, which is used to be executed by the processor 301 to implement the method provided in the method embodiment of the present application.

[0222] The electronic device further includes: a communication interface 303. The processor 301, the memory 302 and the communication interface 303 may be connected via a bus or a signal line. Each peripheral device may be connected to the communication interface 303 via a bus, a signal line or a circuit board.

[0223] The communication interface 303 may be used to connect at least one peripheral device related to I / O (Input / Output) to the processor 301 and the memory 302. In some embodiments, the processor 301, the memory 302, and the communication interface 303 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 301, the memory 302, and the communication interface 303 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.

[0224] Those skilled in the art will understand that Fig.10 The structure shown in the figure does not constitute a limitation on the electronic device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0225] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. Different embodiments or examples described in this specification and features of different embodiments or examples may be combined and combined by a person skilled in the art without contradiction.

[0226] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the embodiments of the present invention includes additional implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0227] The logic and / or steps represented in the flowchart or otherwise described herein may be considered as an ordered list of executable instructions for implementing the logical functions, and may be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with such instruction execution systems, devices or apparatuses. For purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with such instruction execution systems, devices or apparatuses. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or otherwise processing in a suitable manner if necessary, and then stored in a computer memory.

[0228] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0229] A person skilled in the art may understand that all or part of the steps in the above-mentioned embodiment method may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0230] Each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0231] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0232] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0233] The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A control method for a multi-split air conditioning system, characterized in that: The method comprises the following steps: Obtaining the user-selected operation mode setting information of all indoor units in the same room; If at least two indoor units are in operation in the same room, and the operation mode setting information of the first indoor unit among the at least two indoor units is the windless mode, all the first indoor units in the same room are controlled to operate in the windless mode, and all the second indoor units in the same room are controlled to operate in the preset mode; Wherein, the first indoor unit has a no-wind mode for the user to select, and the second indoor unit does not have a no-wind mode for the user to select; The step of controlling all second indoor units in the same room to run the preset mode comprises: Obtaining a target temperature of each of the second indoor units according to the first zone indoor temperature of the first indoor unit and the second set temperature of the second indoor unit; The second indoor unit is controlled to operate in a cooling mode until the indoor temperature of the second area of ​​the second indoor unit reaches the target temperature.

2. The control method of the multi-split air conditioning system according to claim 1, characterized in that: The step of obtaining the target temperature of each second indoor unit according to the first area indoor temperature and the second set temperature comprises: When the indoor temperature of the first area is less than or equal to the perceived comfort temperature, the target temperature of each of the second indoor units is the perceived comfort temperature; When the indoor temperature of the first area is greater than the perceived comfort temperature, the target temperature of each of the second indoor units is the minimum value between the perceived comfort temperature and the second set temperature.

3. The control method of the multi-split air conditioning system according to claim 2, characterized in that: Before the step of controlling the second indoor unit to operate in cooling mode until the indoor temperature of the second area of ​​the second indoor unit reaches the target temperature, the method further includes: determining a fan gear position of the second indoor unit according to the indoor temperature of the second area of ​​the second indoor unit and the second set temperature; The fan of the second indoor unit is controlled to operate according to the fan gear position.

4. The control method of the multi-split air conditioning system according to claim 3, characterized in that: Before the step of determining the fan gear position of the second indoor unit according to the difference between the indoor temperature of the second area and the second set temperature, the method further includes: Determining whether a user of the second indoor unit has selected to set a fan gear; If the user selects to set the fan gear, controlling the fan of the second indoor unit to operate according to the set fan gear; The step of determining the fan gear position of the second indoor unit according to the difference between the indoor temperature of the second area and the second set temperature comprises: If the user does not set the fan gear, the fan gear of the second indoor unit is determined according to the difference between the indoor temperature of the second area and the second set temperature.

5. The control method of a multi-split air conditioning system according to claim 1, characterized in that: There are at least two second indoor units in the same room; Before the step of controlling the second indoor unit to operate in cooling mode until the indoor temperature of the second area of ​​the second indoor unit reaches the target temperature, the method further includes: According to the infrared detection information of each of the first indoor units, a main second indoor unit relatively close to the user and an auxiliary second indoor unit relatively far from the user are obtained among the at least two second indoor units; The target temperature of each of the second indoor units is updated so that the target temperature of the main second indoor unit is lower than the target temperature of the auxiliary second indoor unit.

6. The control method of a multi-split air conditioning system according to claim 1, characterized in that: The step of controlling all the first indoor units in the same room to operate in the windless mode comprises: determining a recommended value of windless superheat of an electronic expansion valve of the first indoor unit according to the regional relative humidity of the first indoor unit; According to the recommended value of the no-wind superheat, the electronic expansion valve is controlled to operate, the air guide plate of the first indoor unit is controlled to rotate to a no-wind angle, and the fan of the first indoor unit is controlled to operate according to the no-wind interval windshield.

7. The control method of a multi-split air conditioning system according to claim 6, characterized in that: Before the step of controlling the fan of the first indoor unit to operate according to the windshield in the no-wind zone, the method further includes: Determining whether a user of the first indoor unit has selected to set a wind speed; If the user selects a set wind speed, controlling the fan of the first indoor unit to operate according to the set wind speed; The step of controlling the fan of the first indoor unit to operate according to the windshield in the no-wind zone includes: If the user does not select to set the wind speed, the fan of the first indoor unit is controlled to operate according to the wind speed stop in the no-wind zone.

8. The control method of a multi-split air conditioning system according to claim 6, characterized in that: Before the step of controlling the operation of the electronic expansion valve according to the recommended value of the no-wind superheat, the method further includes: When the first set temperature of the first indoor unit is less than or equal to the perceived comfort temperature, the perceived comfort temperature is used as the judgment temperature of the first indoor unit; When the first set temperature is greater than the perceived comfort temperature, the first set temperature is used as a determination temperature of the first indoor unit; If the indoor temperature of the first area is greater than the judgment temperature, or the relative humidity of the area is greater than a preset threshold, controlling the first indoor unit to operate in a cooling mode; The step of determining the recommended value of windless superheat of the electronic expansion valve of the first indoor unit according to the regional relative humidity of the first indoor unit comprises: If the indoor temperature of the first area is lower than the judgment temperature and the regional relative humidity is lower than the preset threshold, a recommended value of windless superheat of the electronic expansion valve of the first indoor unit is determined according to the regional relative humidity of the first indoor unit.

9. The control method of a multi-split air conditioning system according to claim 1, characterized in that: There are at least two first indoor units in the same room; The step of controlling all the first indoor units in the same room to operate in the windless mode comprises: According to the infrared detection information of each of the first indoor units, a main first indoor unit relatively close to the user and an auxiliary first indoor unit relatively far from the user are obtained among the at least two first indoor units; Controlling the main first indoor unit to operate in a windless mode, and controlling the auxiliary first indoor unit to operate in a cooling mode at the same time; After the auxiliary first indoor unit operates in the cooling mode for a preset period of time, the auxiliary first indoor unit is controlled to operate in the windless mode.

10. A control device for a multi-split air conditioning system, characterized in that: include: A mode acquisition module, used to obtain the operation mode setting information selected by the user of all indoor units in the same room; A mode control module, for controlling all the first indoor units in the same room to operate in the no-wind mode, and controlling all the second indoor units in the same room to operate in a preset mode, if at least two indoor units are in operation in the same room, and the operation mode setting information of the first indoor unit among the at least two indoor units is the no-wind mode; wherein the first indoor unit has a no-wind mode for the user to select, and the second indoor unit does not have a no-wind mode for the user to select; The mode control module is specifically used to obtain a target temperature of each second indoor unit according to the indoor temperature of the first area of ​​the first indoor unit and the second set temperature of the second indoor unit; and control the second indoor unit to operate in a cooling mode until the indoor temperature of the second area of ​​the second indoor unit reaches the target temperature.

11. A multi-split air conditioning system, characterized in that: The multi-split air conditioning system includes a memory and a processor; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the control method as described in any one of claims 1 to 9.

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