Air conditioner control method and device applied to multi-connected system and multi-connected system

Abstract

This application provides an air conditioner control method, apparatus, and system for multi-split air conditioning systems, applicable to the field of air conditioner control. The method includes: when the multi-split system is operating in a target mode, acquiring in real-time the target difference between the return air inlet temperature and the set temperature of multiple ducted air conditioners; the target mode is any one of the following: cooling mode, heating mode; determining the target operating mode of the multi-split system based on the target difference; and adjusting the operating mode of the multi-split system to the target operating mode if the current operating mode differs from the target operating mode. The air conditioner control method, apparatus, and system provided in this application address the technical problems of uneven indoor ambient temperature and high power consumption in multi-split ducted air conditioning systems in related technologies, thereby improving the cooling and heating efficiency of multi-split ducted air conditioning systems to a certain extent.

Description

Technical Field

[0001] This application relates to the field of air conditioner control, and in particular to an air conditioner control method, device, and multi-split system applied to a multi-split system. Background Technology

[0002] As people's living standards continue to improve and the level of intelligence in home appliances continues to rise, smart home appliances are becoming increasingly popular. Users can use air conditioners to heat in winter to raise the indoor temperature, and they can also use air conditioners to cool in summer to lower the indoor temperature.

[0003] In related technologies, cross-flow ducted air conditioners with horizontal return air and downward air outlet are generally shallower, making them suitable for use in light troughs; while ducted air conditioners with downward return air and horizontal air outlet are deeper, making them suitable for placement in spaces with ample room. When an indoor space is large and multiple ducted air conditioners are required, the inconsistent cooling and heating effects of different types of ducted air conditioners can easily lead to uneven indoor temperatures, thus requiring more electricity.

[0004] Therefore, there is an urgent need for an air conditioner control method that can solve the problems of uneven indoor temperature and high power consumption in multi-split air conditioning systems. Summary of the Invention

[0005] The purpose of this application is to provide an air conditioner control method, device, and multi-split air conditioning system, which solves the technical problems of uneven indoor ambient temperature and high power consumption in multi-split duct air conditioning systems in related technologies, and improves the cooling and heating efficiency of multi-split duct air conditioning systems to a certain extent.

[0006] This application provides an air conditioner control method for use in multi-split systems, including:

[0007] When the multi-split air conditioning system is operating in the target mode, the target difference between the return air vent temperature and the set temperature of the multiple ducted air conditioners is acquired in real time. The target mode is any one of the following: cooling mode or heating mode. The target operating mode of the multi-split air conditioning system is determined based on the target difference, and if the current operating mode of the multi-split air conditioning system differs from the target operating mode, the operating mode of the multi-split air conditioning system is adjusted to the target operating mode. The target operating mode includes any one of the following: a first operating mode in which both the first and second ducted air conditioners operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the supply air mode; and a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating. In the target mode, the operating performance of the first ducted air conditioner is better than that of the second ducted air conditioner.

[0008] Optionally, when the target mode is heating mode, the first duct unit is a cross-flow duct unit with a return air vent in the horizontal direction and an air outlet at the bottom; the second duct unit is a cross-flow duct unit with an air outlet in the horizontal direction and a return air vent at the bottom; when the target mode is cooling mode, the first duct unit is a cross-flow duct unit with an air outlet in the horizontal direction and a return air vent at the bottom; the second duct unit is a cross-flow duct unit with a return air vent in the horizontal direction and an air outlet at the bottom; the number of first duct units is the same as the number of second duct units, and each first duct unit is arranged adjacent to two second duct units.

[0009] Optionally, when the multi-split air system is operating in target mode, the step of acquiring the target difference between the return air inlet temperature and the set temperature of the multiple duct units in real time includes: acquiring the return air inlet temperature of each duct unit in the second duct unit, and calculating the average return air temperature of each duct unit; and determining the average return air temperature as the target difference.

[0010] Optionally, determining the target operating mode of the multi-unit system based on the target difference includes: determining the first operating mode as the target operating mode when the target difference is greater than a first preset threshold; or, determining the second operating mode as the target operating mode when the target difference is less than or equal to the first preset threshold and greater than a second preset threshold; or, determining the third operating mode as the target operating mode when the target difference is less than or equal to the second preset threshold; wherein the first preset threshold is greater than the second preset threshold.

[0011] Optionally, adjusting the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system differs from the target operating mode includes: adjusting the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system differs from the target operating mode and the target function of the multi-split air conditioning system is not enabled; wherein the target function includes any one of the following: humidification function, dehumidification function, purification function, sterilization function, and fresh air function.

[0012] Optionally, if the current operating mode of the multi-split air conditioning system differs from the target operating mode, adjusting the operating mode of the multi-split air conditioning system to the target operating mode includes: if the current operating mode of the multi-split air conditioning system differs from the target operating mode and the multi-split air conditioning system has the target function enabled, adjusting the target operating mode by adjusting the ducted air conditioner that is determined to be stopped in the target operating mode to operate in the air supply mode; and adjusting the operating mode of the multi-split air conditioning system to the adjusted target operating mode.

[0013] Optionally, adjusting the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system differs from the target operating mode includes: when the root mean square difference of the return air inlet temperature of each duct unit in the second duct unit is greater than a preset difference, controlling the target duct unit to maintain its current operating mode unchanged, and adjusting the other duct units in the multi-split air conditioning system other than the target duct unit according to the target operating mode; wherein, the target duct unit is the duct unit in the second duct unit with the largest difference between the return air inlet temperature and the set temperature.

[0014] This application also provides an air conditioner control device for use in a multi-split system, comprising:

[0015] An acquisition module is used to acquire, in real time, the target difference between the return air vent temperature and the set temperature of the multiple ducted air conditioners when the multi-split air conditioning system is operating in the target mode; the target mode is any one of the following: cooling mode, heating mode; a determination module is used to determine the target operating mode of the multi-split air conditioning system based on the target difference; a control module is used to adjust the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system is different from the target operating mode; wherein, the target operating mode includes any one of the following: a first operating mode in which both the first ducted air conditioner and the second ducted air conditioner are operating in the target mode, a second operating mode in which the first ducted air conditioner is operating in the target mode and the second ducted air conditioner is operating in the supply air mode, and a third operating mode in which the first ducted air conditioner is operating in the target mode and the second ducted air conditioner is stopped; in the target mode, the operating effect of the first ducted air conditioner is better than that of the second ducted air conditioner.

[0016] Optionally, when the target mode is heating mode, the first duct unit is a cross-flow duct unit with a return air vent in the horizontal direction and an air outlet at the bottom; the second duct unit is a cross-flow duct unit with an air outlet in the horizontal direction and a return air vent at the bottom; when the target mode is cooling mode, the first duct unit is a cross-flow duct unit with an air outlet in the horizontal direction and a return air vent at the bottom; the second duct unit is a cross-flow duct unit with a return air vent in the horizontal direction and an air outlet at the bottom; the number of first duct units is the same as the number of second duct units, and each first duct unit is arranged adjacent to two second duct units.

[0017] Optionally, the acquisition module is specifically used to acquire the return air inlet temperature of each duct unit in the second duct unit, and calculate the average return air temperature of each duct unit; the determination module is further used to determine the average return air temperature as the target difference.

[0018] Optionally, the determining module is specifically configured to determine the first operating mode as the target operating mode when the target difference is greater than a first preset threshold; the determining module is further configured to determine the second operating mode as the target operating mode when the target difference is less than or equal to the first preset threshold and greater than a second preset threshold; the determining module is further configured to determine the third operating mode as the target operating mode when the target difference is less than or equal to the second preset threshold; wherein the first preset threshold is greater than the second preset threshold.

[0019] Optionally, the control module is specifically used to adjust the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system is different from the target operating mode and the target function of the multi-split air conditioning system is not enabled; wherein the target function includes any one of the following: humidification function, dehumidification function, purification function, sterilization function, and fresh air function.

[0020] Optionally, the device further includes: an adjustment module; the adjustment module is used to adjust the target operating mode when the current operating mode of the multi-split system is different from the target operating mode and the multi-split system has the target function enabled, adjusting the duct unit that is determined to be stopped in the target operating mode to operate in the air supply mode; the control module is specifically used to adjust the operating mode of the multi-split system to the adjusted target operating mode.

[0021] Optionally, the control module is specifically used to control the target duct unit to maintain its current operating mode and adjust the other duct units in the multi-split system, excluding the target duct unit, according to the target operating mode when the mean square difference of the return air outlet temperature of each duct unit in the second duct unit is greater than a preset difference; wherein, the target duct unit is the duct unit in the second duct unit with the largest difference between the return air outlet temperature and the set temperature.

[0022] This application also provides a multi-split air conditioning system, including multiple ducted air conditioners, which can implement the steps of the air conditioner control method applied to the multi-split air conditioning system as described above.

[0023] This application also provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the air conditioner control method applied to a multi-split system as described above.

[0024] This application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the air conditioner control method applied to a multi-split system as described above.

[0025] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the air conditioner control method applied to a multi-split system as described above.

[0026] The air conditioner control method, device, and multi-split air conditioning system provided in this application, firstly, when the multi-split air conditioning system is operating in a target mode, acquires in real time the target difference between the return air inlet temperature and the set temperature of the multiple ducted air conditioners; the target mode is any one of the following: cooling mode, heating mode; then, determines the target operating mode of the multi-split air conditioning system based on the target difference; finally, when the current operating mode of the multi-split air conditioning system differs from the target operating mode, adjusts the operating mode of the multi-split air conditioning system to the target operating mode. The target operating mode includes any one of the following: a first operating mode in which both the first and second ducted air conditioners operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the supply air mode; a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating; in the target mode, the first ducted air conditioner performs better than the second ducted air conditioner. In this way, not only can the technical problems of uneven indoor temperature and high power consumption in multi-split ducted air conditioning systems be solved, but the cooling and heating efficiency of multi-split ducted air conditioning systems can also be improved to a certain extent. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the air conditioner's operating principle provided in this application;

[0029] Figure 2 This is a schematic diagram showing the location distribution of the ducted air handling units in the multi-split air handling system provided in this application;

[0030] Figure 3 This is one of the flowcharts illustrating the air conditioner control method for multi-split systems provided in this application;

[0031] Figure 4 This is the second flowchart of the air conditioner control method for multi-split systems provided in this application;

[0032] Figure 5 This is a schematic diagram of the structure of the air conditioner control device applied to a multi-split system provided in this application;

[0033] Figure 6 This is a schematic diagram of the structure of the electronic device provided in this application. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] The operating principle of the air conditioner involved in the embodiments of this application is described in detail below:

[0037] like Figure 1 As shown, the compressor compresses the refrigerant and delivers it through pipes to the condenser. The high-temperature, high-pressure gaseous refrigerant releases heat in the condenser, transforming into a medium-temperature, high-pressure liquid refrigerant. Then, the medium-temperature, high-pressure liquid refrigerant is depressurized through a capillary tube (throttling unit) to become a low-temperature, low-pressure liquid refrigerant. This low-temperature, low-pressure liquid refrigerant is then delivered to the evaporator, where it evaporates into a gas, absorbing a large amount of heat during the evaporation process. Finally, the low-temperature, low-pressure gaseous refrigerant in the evaporator is delivered to the compressor to participate in the next cycle. When the air conditioner is cooling, the outdoor unit's heat exchanger acts as the condenser, and the indoor unit's heat exchanger acts as the evaporator; conversely, when the air conditioner is heating, the outdoor unit's heat exchanger acts as the evaporator, and the indoor unit's heat exchanger acts as the condenser.

[0038] Based on the above working principle, the working principles of an air conditioner in different operating modes include:

[0039] 1. Cooling or Heating Cycle: Air conditioners cool or heat air through the cooling or heating cycle of the outdoor unit. In the cooling cycle, the outdoor unit compresses the refrigerant into a high-temperature, high-pressure gas using a compressor. The gas then releases heat through the condenser, turning the refrigerant into a high-temperature, high-pressure liquid. The liquid then expands through the expansion valve into a low-temperature, low-pressure liquid, absorbing heat from the indoor air and cooling it. In the heating cycle, the outdoor unit operates in reverse, releasing the heat from the refrigerant into the room, thus providing heat. 2. Indoor Unit Air Supply and Return: Air conditioners deliver cool or hot air to different rooms or areas through the duct system via the indoor unit. The indoor unit is typically equipped with a fan and heat exchanger, which directs the cool or hot air from the outdoor unit into the duct system and then distributes it to different rooms or areas. Simultaneously, the indoor unit draws in indoor air and exchanges heat with the refrigerant, thus cooling or heating the indoor air. 3. Duct System: Air conditioners distribute cool or hot air to different rooms or areas through the duct system. A typical duct system includes supply air channels and return air channels. The supply air channels deliver cool or hot air from the indoor unit to different rooms or areas, while the return air channels return air from the room to the indoor unit through return air vents for further processing. 4. Temperature and fan speed control: Air conditioners are usually equipped with temperature sensors and fan speed controllers. Based on user-set temperature and fan speed requirements, they control the operation of the outdoor and indoor units to achieve temperature and fan speed control in different rooms or areas. Generally, air conditioners can provide independent temperature control for different rooms or areas, offering a comfortable indoor environment.

[0040] In response to the technical problems of uneven indoor ambient temperature and high power consumption in multi-split ducted air conditioning systems in related technologies, the embodiments of this application combine the characteristics of different types of ducted air conditioning units and adjust the layout of the ducted air conditioning units to solve the technical problem of uneven indoor ambient temperature; at the same time, combined with corresponding control methods, the power consumption of the ducted air conditioning units is reduced to a certain extent and the operating efficiency of the ducted air conditioning units is improved.

[0041] It is understandable that cross-flow air ducts with horizontal return and downward airflow have better heating performance. Hot air tends to rise, so downward airflow ensures more even distribution of hot air in the room. If the airflow is horizontal, the hot air accumulates in the upper part of the room, resulting in poor heating. Similarly, cross-flow air ducts with downward return and horizontal airflow have better cooling performance. Based on this, if... Figure 2 The diagram illustrates a layout for a multi-split ducted air conditioning system according to an embodiment of this application. 201 is a cross-flow ducted air conditioner with horizontal return air and downward air outlet, while 202 is a cross-flow ducted air conditioner with horizontal air outlet and downward return air. The staggered distribution of these two different types of ducted air conditioners not only solves the technical problem of uneven indoor temperature but also reduces the power consumption of the ducted air conditioners to a certain extent, thereby improving their operating efficiency.

[0042] The air conditioner control method for multi-split systems provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0043] like Figure 3 As shown in the embodiment of this application, an air conditioner control method applied to a multi-split air conditioning system is provided. The multi-split air conditioning system includes multiple ducted air conditioners. The method may include the following steps 301 and 302:

[0044] Step 301: When the multi-split air conditioning system is operating in target mode, obtain in real time the target difference between the return air vent temperature and the set temperature of the multiple duct units.

[0045] The target mode is either a cooling mode or a heating mode. When the target mode is heating mode, the first duct unit is a cross-flow duct unit with a horizontal return air vent and a bottom air outlet; the second duct unit is a cross-flow duct unit with a horizontal air outlet and a bottom return air vent. When the target mode is cooling mode, the first duct unit is a cross-flow duct unit with a horizontal air outlet and a bottom return air vent; the second duct unit is a cross-flow duct unit with a horizontal return air vent and a bottom air outlet. The number of first duct units is the same as the number of second duct units, and each first duct unit is adjacent to two second duct units.

[0046] It is understood that in the embodiments of this application, the operating modes of the multi-split air conditioning system are different, and the types of ducted air conditioners referred to as the first ducted air conditioner and the second ducted air conditioner are also different. In heating mode, the first ducted air conditioner is a cross-flow ducted air conditioner with the return air vent set in the horizontal direction and the air outlet set at the bottom. This type of ducted air conditioner has a better heating effect. In cooling mode, the first ducted air conditioner is a cross-flow ducted air conditioner with the air outlet set in the horizontal direction and the return air vent set at the bottom. This type of ducted air conditioner has a better cooling effect.

[0047] For example, the above-mentioned multi-split air conditioning system includes multiple ducted air conditioners. Each ducted air conditioner can be controlled individually or by the system as a whole. That is, under normal circumstances, the operating mode of each ducted air conditioner in the multi-split air conditioning system is set to the same.

[0048] For example, a temperature sensor is installed at the return air vent of each ducted air unit to detect the return air vent temperature of the ducted air unit. Based on the return air vent temperature, the control of each ducted air unit in the multi-split system can be realized.

[0049] It should be noted that the return air vent temperatures of different ducted air conditioners are not necessarily the same. Therefore, how to control each ducted air conditioner in a multi-split air conditioning system based on the collected return air vent temperatures of multiple ducted air conditioners is also a key point of this application's embodiments.

[0050] Specifically, step 301 above may include steps 301a1 and 301a2:

[0051] Step 301a1: Obtain the return air temperature of each duct unit in the second duct unit, and calculate the average return air temperature of each duct unit.

[0052] Step 301a2: Determine the average return air temperature as the target difference.

[0053] For example, in this embodiment of the application, the average return air temperature of the second ducted air unit, which performs poorly in the target mode, is used as the judgment criterion. Since the difference between the average return air temperature of the second ducted air unit and the set temperature is larger in the target mode, using the average return air temperature of the second ducted air unit as the judgment criterion can further improve the uneven indoor temperature to a certain extent.

[0054] It should be noted that in heating mode, the aforementioned second duct unit is a cross-flow duct unit with the air outlet set in the horizontal direction and the return air outlet set at the bottom. This type of duct unit has poor heating performance. In cooling mode, the aforementioned second duct unit is a cross-flow duct unit with the return air outlet set in the horizontal direction and the air outlet set at the bottom. This type of duct unit has poor cooling performance.

[0055] Step 302: Determine the target operating mode of the multi-split air conditioning system based on the target difference, and adjust the operating mode of the multi-split air conditioning system to the target operating mode if the current operating mode of the multi-split air conditioning system is different from the target operating mode.

[0056] The target operating mode includes any one of the following: a first operating mode in which both the first ducted air conditioner and the second ducted air conditioner operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the air supply mode; and a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating. In the target mode, the operating effect of the first ducted air conditioner is better than that of the second ducted air conditioner. This operating effect refers to the cooling / heating effect.

[0057] For example, after obtaining the target difference, the relationship between the current ambient temperature and the set temperature can be determined based on the target difference, and the operation of each duct unit in the multi-split system can be adjusted.

[0058] Specifically, step 302 above may include any one of steps 302a1 to 302a3:

[0059] Step 302a1: If the target difference is greater than the first preset threshold, the first operating mode is determined as the target operating mode.

[0060] Step 302a2: If the target difference is less than or equal to the first preset threshold and greater than the second preset threshold, the second operating mode is determined as the target operating mode.

[0061] Step 302a3: If the target difference is less than or equal to the second preset threshold, the third operating mode is determined as the target operating mode.

[0062] Wherein, the first preset threshold is greater than the second preset threshold.

[0063] For example, such as Figure 4As shown, after the multi-split air conditioning system is turned on, it operates according to the user-defined working mode. During operation, the temperature sensor continuously monitors the return air vent temperature T1 (i.e., the average return air temperature mentioned above) and calculates the difference T between the return air vent temperature T1 and the set temperature T2 (i.e., the target difference mentioned above). Then, based on this difference T, a judgment is made: when 1℃ ≥ T (i.e., the target difference is less than or equal to the second preset threshold), only the first duct unit operates normally (i.e., the third operating mode mentioned above); when 2℃ ≥ T > 1℃ (i.e., the target difference is less than or equal to the first preset threshold and greater than the second preset threshold), the first duct unit operates normally, but the second duct unit only turns on the cross-flow fan to circulate indoor air; when T > 2℃ (i.e., the target difference is greater than the first preset threshold), both the first and second duct units operate normally (i.e., the first operating mode mentioned above).

[0064] For example, after determining the target operating mode based on the above target difference, if the current operating mode of the multi-split system is different from the target operating mode, the operating mode of the multi-split system can be directly adjusted to the target operating mode.

[0065] In one possible implementation, if other auxiliary functions are enabled in the multi-split system, it is also necessary to ensure the normal operation of these auxiliary functions when adjusting the operating mode of the multi-split system.

[0066] Specifically, in one implementation, the multi-unit operation mode is adjusted only when the auxiliary function is not enabled, i.e., step 302 above may also include the following step 302b1:

[0067] Step 302b1: If the current operating mode of the multi-split system is different from the target operating mode and the target function is not enabled in the multi-split system, adjust the operating mode of the multi-split system to the target operating mode.

[0068] The target functions include any one of the following: humidification, dehumidification, purification, sterilization, and fresh air function.

[0069] Specifically, in another implementation, when the auxiliary function of the multi-split system is activated, the target operating mode can be adjusted, and the operation of each duct unit can be adjusted according to the adjusted target operating mode; that is, step 302 above may also include the following steps 302b2 and 302b3:

[0070] Step 302b2: When the current operating mode of the multi-split air conditioning system is different from the target operating mode and the multi-split air conditioning system has the target function enabled, the target operating mode is adjusted so that the duct air conditioner that is determined to stop operating in the target operating mode is adjusted to operate in the air supply mode.

[0071] Step 302b3: Adjust the operating mode of the multi-unit system to the adjusted target operating mode.

[0072] For example, when the multi-split air conditioning system activates the target function, the ducted air conditioner that is determined to stop operating in the target operating mode can be adjusted to operate in the air supply mode in order to maintain the normal operation of the target function.

[0073] Optionally, in this embodiment of the application, if the return air outlet temperature of a target duct unit in the second duct unit is significantly different from the set temperature, it indicates that the operation of the target duct unit may be abnormal, thereby affecting its operating efficiency. In this case, the normal operation of the target duct unit can be maintained, and the user can be reminded so that the problem can be detected in time.

[0074] Specifically, step 302 above may also include the following step 302c:

[0075] Step 302c: If the mean square difference of the return air outlet temperature of each duct unit in the second duct unit is greater than the preset difference, control the target duct unit to maintain its current operating mode unchanged, and adjust the other duct units in the multi-split system other than the target duct unit according to the target operating mode.

[0076] The target duct unit is the duct unit in the second duct unit with the largest difference between the return air outlet temperature and the set temperature.

[0077] It should be noted that when the air outlet / return air outlet of the ducted air conditioner is blocked, or when the refrigerant leaks, the heating / heating efficiency of the ducted air conditioner will be affected. In this case, the method in step 302c above can be used to make a judgment and execute the corresponding control method.

[0078] The air conditioner control method for a multi-split air conditioning system provided in this application embodiment firstly acquires, in real time, the target difference between the return air inlet temperature and the set temperature of the multiple ducted air conditioners when the multi-split air conditioning system is operating in a target mode; the target mode is any one of the following: cooling mode, heating mode; then, the target operating mode of the multi-split air conditioning system is determined based on the target difference; finally, if the current operating mode of the multi-split air conditioning system is different from the target operating mode, the operating mode of the multi-split air conditioning system is adjusted to the target operating mode. The target operating mode includes any one of the following: a first operating mode in which both the first and second ducted air conditioners operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the supply air mode; a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating; in the target mode, the operating effect of the first ducted air conditioner is better than that of the second ducted air conditioner. In this way, not only can the technical problems of uneven indoor temperature and high power consumption in multi-split ducted air conditioning systems be solved, but the cooling and heating efficiency of multi-split ducted air conditioning systems can also be improved to a certain extent.

[0079] It should be noted that the air conditioner control method for multi-split systems provided in this application embodiment can be executed by an air conditioner control device for multi-split systems, or by a control module within that air conditioner control device for executing the air conditioner control method for multi-split systems. This application embodiment uses the execution of the air conditioner control method for multi-split systems by an air conditioner control device for multi-split systems as an example to illustrate the air conditioner control device for multi-split systems provided in this application embodiment.

[0080] It should be noted that, in the embodiments of this application, the air conditioner control methods for multi-split systems illustrated in the accompanying drawings are all exemplified by referring to one of the accompanying drawings in the embodiments of this application. In specific implementation, the air conditioner control methods for multi-split systems illustrated in the accompanying drawings of the above methods can also be implemented in conjunction with any other accompanying drawings shown in the above embodiments, which will not be elaborated here.

[0081] The air conditioner control device for multi-split systems provided in this application is described below. The air conditioner control method for multi-split systems described below can be referred to in correspondence with the air conditioner control method for multi-split systems described above.

[0082] Figure 5 A schematic diagram of the structure of an air conditioner control device applied to a multi-split system provided in an embodiment of this application is shown below. Figure 5 As shown, it specifically includes:

[0083] The acquisition module 501 is used to acquire, in real time, the target difference between the return air vent temperature and the set temperature of the multiple ducted air conditioners when the multi-split air conditioner system is operating in the target mode; the target mode is any one of the following: cooling mode, heating mode; the determination module 502 is used to determine the target operating mode of the multi-split air conditioner system based on the target difference; the control module 503 is used to adjust the operating mode of the multi-split air conditioner system to the target operating mode when the current operating mode of the multi-split air conditioner system is different from the target operating mode; wherein, the target operating mode includes any one of the following: a first operating mode in which both the first ducted air conditioner and the second ducted air conditioner are operating in the target mode, a second operating mode in which the first ducted air conditioner is operating in the target mode and the second ducted air conditioner is operating in the supply air mode, and a third operating mode in which the first ducted air conditioner is operating in the target mode and the second ducted air conditioner is stopped; in the target mode, the operating effect of the first ducted air conditioner is better than that of the second ducted air conditioner.

[0084] Optionally, when the target mode is heating mode, the first duct unit is a cross-flow duct unit with a return air vent in the horizontal direction and an air outlet at the bottom; the second duct unit is a cross-flow duct unit with an air outlet in the horizontal direction and a return air vent at the bottom; when the target mode is cooling mode, the first duct unit is a cross-flow duct unit with an air outlet in the horizontal direction and a return air vent at the bottom; the second duct unit is a cross-flow duct unit with a return air vent in the horizontal direction and an air outlet at the bottom; the number of first duct units is the same as the number of second duct units, and each first duct unit is arranged adjacent to two second duct units.

[0085] Optionally, the acquisition module 501 is specifically used to acquire the return air inlet temperature of each duct unit in the second duct unit, and calculate the average return air temperature of each duct unit; the determination module 502 is further used to determine the average return air temperature as the target difference.

[0086] Optionally, the determining module 502 is specifically configured to determine the first operating mode as the target operating mode when the target difference is greater than a first preset threshold; the determining module 502 is further configured to determine the second operating mode as the target operating mode when the target difference is less than or equal to the first preset threshold and greater than a second preset threshold; the determining module 502 is further configured to determine the third operating mode as the target operating mode when the target difference is less than or equal to the second preset threshold; wherein, the first preset threshold is greater than the second preset threshold.

[0087] Optionally, the control module 503 is specifically used to adjust the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system is different from the target operating mode and the target function of the multi-split air conditioning system is not enabled; wherein the target function includes any one of the following: humidification function, dehumidification function, purification function, sterilization function, and fresh air function.

[0088] Optionally, the device further includes: an adjustment module; the adjustment module is used to adjust the target operating mode when the current operating mode of the multi-split system is different from the target operating mode and the multi-split system has the target function enabled, adjusting the duct unit that is determined to be stopped in the target operating mode to operate in the air supply mode; the control module 503 is specifically used to adjust the operating mode of the multi-split system to the adjusted target operating mode.

[0089] Optionally, the control module 503 is specifically used to control the target duct unit to maintain its current operating mode and adjust the other duct units in the multi-split system, excluding the target duct unit, according to the target operating mode when the mean square difference of the return air outlet temperature of each duct unit in the second duct unit is greater than a preset difference; wherein, the target duct unit is the duct unit in the second duct unit with the largest difference between the return air outlet temperature and the set temperature.

[0090] The air conditioner control device for a multi-split air conditioning system provided in this application firstly acquires, in real time, the target difference between the return air inlet temperature and the set temperature of the multiple ducted air conditioners when the multi-split air conditioning system is operating in a target mode; the target mode is any one of the following: cooling mode, heating mode; then, the target operating mode of the multi-split air conditioning system is determined based on the target difference; finally, if the current operating mode of the multi-split air conditioning system is different from the target operating mode, the operating mode of the multi-split air conditioning system is adjusted to the target operating mode. The target operating mode includes any one of the following: a first operating mode in which both the first and second ducted air conditioners operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the supply air mode; a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating; in the target mode, the operating performance of the first ducted air conditioner is better than that of the second ducted air conditioner. In this way, not only can the technical problems of uneven indoor temperature and high power consumption in multi-split ducted air conditioning systems be solved, but the cooling and heating efficiency of multi-split ducted air conditioning systems can also be improved to a certain extent.

[0091] Figure 6This example illustrates a schematic diagram of the physical structure of an electronic device. This electronic device can be any ducted air conditioner in the aforementioned multi-split air conditioning system, or it can be the central controller of the multi-split system, such as... Figure 6 As shown, the electronic device may include: a processor 610, a communication interface 620, a memory 630, and a communication bus 640, wherein the processor 610, the communication interface 620, and the memory 630 communicate with each other through the communication bus 640. The processor 610 can call logic instructions in the memory 630 to execute an air conditioner control method applied to a multi-split air conditioning system. The method includes: when the multi-split air conditioning system is operating in a target mode, acquiring in real time the target difference between the return air vent temperature and the set temperature of the multiple ducted air conditioners; the target mode is any one of the following: cooling mode, heating mode; determining a target operating mode of the multi-split air conditioning system based on the target difference, and adjusting the operating mode of the multi-split air conditioning system to the target operating mode if the current operating mode of the multi-split air conditioning system differs from the target operating mode; wherein the target operating mode includes any one of the following: a first operating mode in which both the first and second ducted air conditioners operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the supply air mode; a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating; in the target mode, the first ducted air conditioner performs better than the second ducted air conditioner.

[0092] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0093] On the other hand, this application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the air conditioner control method for a multi-split air conditioning system provided by the above methods. The method includes: when the multi-split air conditioning system is operating in a target mode, acquiring in real time the target difference between the return air vent temperature and the set temperature of the multiple ducted air conditioners; the target mode is any one of the following: cooling mode, heating mode; determining the target operating mode of the multi-split air conditioning system based on the target difference, and adjusting the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system is different from the target operating mode; wherein, the target operating mode includes any one of the following: a first operating mode in which both the first ducted air conditioner and the second ducted air conditioner are operating in the target mode, a second operating mode in which the first ducted air conditioner is operating in the target mode and the second ducted air conditioner is operating in the supply air mode, and a third operating mode in which the first ducted air conditioner is operating in the target mode and the second ducted air conditioner is not operating; in the target mode, the operating effect of the first ducted air conditioner is better than that of the second ducted air conditioner.

[0094] In another aspect, this application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described air conditioner control methods for multi-split systems. The method includes: when the multi-split system is operating in a target mode, acquiring in real-time a target difference between the return air vent temperature and a set temperature of the plurality of ducted air conditioners; the target mode being any one of the following: cooling mode, heating mode; determining a target operating mode of the multi-split system based on the target difference, and adjusting the operating mode of the multi-split system to the target operating mode when the current operating mode of the multi-split system differs from the target operating mode; wherein the target operating mode includes any one of the following: a first operating mode where both the first and second ducted air conditioners operate in the target mode; a second operating mode where the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in a supply air mode; a third operating mode where the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating; and in the target mode, the first ducted air conditioner performs better than the second ducted air conditioner.

[0095] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0096] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for controlling an air conditioner applied to a multi-connected system, the method comprising the steps of: determining whether a plurality of indoor units are connected to the air conditioner; and controlling the air conditioner based on the determination result. Applied to a multi-split air conditioning system, the multi-split air conditioning system including multiple ducted air conditioners, the method includes: When the multi-split air conditioning system is operating in target mode, the target difference between the return air vent temperature and the set temperature of the multiple ducted air conditioners is acquired in real time; the target mode includes at least one of the following: cooling mode, heating mode; The target operating mode of the multi-split air conditioning system is determined based on the target difference, and if the current operating mode of the multi-split air conditioning system is different from the target operating mode, the operating mode of the multi-split air conditioning system is adjusted to the target operating mode. The target operating mode includes any one of the following: a first operating mode in which both the first ducted air conditioner and the second ducted air conditioner operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the air supply mode; and a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating; in the target mode, the operating effect of the first ducted air conditioner is better than that of the second ducted air conditioner. When the target mode is heating mode, the first duct unit is a cross-flow duct unit with the return air vent set in the horizontal direction and the air outlet set at the bottom; the second duct unit is a cross-flow duct unit with the air outlet set in the horizontal direction and the return air vent set at the bottom. When the target mode is cooling mode, the first duct unit is a cross-flow duct unit with the air outlet set in the horizontal direction and the return air outlet set at the bottom; the second duct unit is a cross-flow duct unit with the return air outlet set in the horizontal direction and the air outlet set at the bottom. The number of the first duct unit is the same as the number of the second duct unit, and each first duct unit is arranged adjacent to two second duct units.

2. The method of claim 1, wherein, When the multi-split air conditioning system is operating in target mode, the real-time acquisition of the target difference between the return air inlet temperature and the set temperature of the multiple ducted air conditioners includes: Obtain the return air inlet temperature of each duct unit in the second duct unit, and calculate the average return air temperature of each duct unit. The average return air temperature is determined as the target difference.

3. The method of claim 1, wherein, Determining the target operating mode of the multi-unit system based on the target difference includes: If the target difference is greater than a first preset threshold, the first operating mode is determined as the target operating mode; or, If the target difference is less than or equal to the first preset threshold and greater than the second preset threshold, the second operating mode is determined as the target operating mode. or, If the target difference is less than or equal to the second preset threshold, the third operating mode is determined as the target operating mode; Wherein, the first preset threshold is greater than the second preset threshold.

4. The method of claim 1, wherein, When the current operating mode of the multi-split air conditioning system differs from the target operating mode, adjusting the operating mode of the multi-split air conditioning system to the target operating mode includes: If the current operating mode of the multi-split air conditioning system is different from the target operating mode, and the target function is not enabled in the multi-split air conditioning system, the operating mode of the multi-split air conditioning system will be adjusted to the target operating mode. The target functions include any one of the following: humidification, dehumidification, purification, sterilization, and fresh air function.

5. The method of claim 4, wherein, When the current operating mode of the multi-split air conditioning system differs from the target operating mode, adjusting the operating mode of the multi-split air conditioning system to the target operating mode includes: When the current operating mode of the multi-split air conditioning system is different from the target operating mode, and the multi-split air conditioning system has the target function enabled, the target operating mode is adjusted so that the duct air conditioner that is determined to stop operating in the target operating mode is adjusted to operate in the air supply mode. The operating mode of the multi-unit system is adjusted to the target operating mode.

6. The method of claim 1, wherein, When the current operating mode of the multi-split air conditioning system differs from the target operating mode, adjusting the operating mode of the multi-split air conditioning system to the target operating mode includes: If the mean square difference of the return air outlet temperature of each duct unit in the second duct unit is greater than the preset difference, the target duct unit is controlled to maintain its current operating mode, and the other duct units in the multi-split system other than the target duct unit are adjusted according to the target operating mode. The target duct unit is the duct unit in the second duct unit with the largest difference between the return air outlet temperature and the set temperature.

7. An air conditioner control device for a multi-connected system, characterized by comprising: Applied to a multi-split air conditioning system, the multi-split air conditioning system including multiple ducted air conditioners, the device includes: The acquisition module is used to acquire, in real time, the target difference between the return air vent temperature and the set temperature of the multiple duct units when the multi-split system is operating in the target mode; the target mode includes at least one of the following: cooling mode, heating mode; The determination module is used to determine the target operating mode of the multi-unit system based on the target difference. The control module is used to adjust the operating mode of the multi-split air conditioning system to the target operating mode when the current operating mode of the multi-split air conditioning system is different from the target operating mode; The target operating mode includes any one of the following: a first operating mode in which both the first ducted air conditioner and the second ducted air conditioner operate in the target mode; a second operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner operates in the air supply mode; and a third operating mode in which the first ducted air conditioner operates in the target mode and the second ducted air conditioner stops operating; in the target mode, the operating effect of the first ducted air conditioner is better than that of the second ducted air conditioner. When the target mode is heating mode, the first duct unit is a cross-flow duct unit with the return air vent set in the horizontal direction and the air outlet set at the bottom; the second duct unit is a cross-flow duct unit with the air outlet set in the horizontal direction and the return air vent set at the bottom. When the target mode is cooling mode, the first duct unit is a cross-flow duct unit with the air outlet set in the horizontal direction and the return air outlet set at the bottom; the second duct unit is a cross-flow duct unit with the return air outlet set in the horizontal direction and the air outlet set at the bottom. The number of the first duct unit is the same as the number of the second duct unit, and each first duct unit is arranged adjacent to two second duct units.

8. A multi-split system, characterized in that, The system includes multiple ducted air conditioners, and the multi-split system is used to implement the steps of the air conditioner control method applied to the multi-split system as described in any one of claims 1 to 6.

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