Multi-split air conditioning system and control method, device, air conditioner and storage medium thereof

Abstract

The present application relates to a multi-split air conditioning system and its control method, device, air conditioner, and storage medium, which are applied to the multi-split air conditioning system. The multi-split air conditioning system includes at least one first outdoor unit and at least one second outdoor unit, and the air outlet directions of the first and second outdoor units are different. The method includes: obtaining the type and unit cooling capacity of each currently connected outdoor unit; the type includes a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit; based on the type of each outdoor unit, determining the priority of each outdoor unit; obtaining the current required cooling capacity of the indoor unit; and controlling the operation of at least one outdoor unit based on the required cooling capacity and the unit cooling capacity and priority of each outdoor unit. This can improve the matching degree between the cooling capacity output of the outdoor unit and the cooling capacity demand of the indoor unit, improve the stability of the room temperature, and enhance the user experience.

Description

Technical Field

[0001] The present application relates to the technical field of smart home devices, and in particular to a multi-split air-conditioning system and a control method, device, air conditioner and storage medium thereof. Background Art

[0002] In the field of light commercial air conditioning, multi-split air conditioners are very popular. Among them, the modular system of the outdoor unit of the multi-split air conditioner can include one or more outdoor units, which can simultaneously connect and centrally control multiple indoor units. The indoor units are of various types, easy to select for engineering, and a large gap is allowed between the outdoor unit and the indoor unit.

[0003] At present, the modular system of the outdoor unit of the multi-split air conditioner is generally composed of multiple single outdoor units with upward air discharge. The cooling capacity of this type of outdoor unit with upward air discharge is usually large, with a minimum of 8HP and a maximum of over 30HP. This limits the minimum output cooling capacity of the product, resulting in excessive cooling output of the outdoor unit when there is a small load demand on the indoor unit. The cooling demand of the indoor unit does not match the cooling output of the outdoor unit, resulting in large fluctuations in room temperature, which affects the user experience. Summary of the Invention

[0004] The present application provides a multi-split air-conditioning system and its control method, device, air conditioner and storage medium to solve the technical problems in the prior art that the minimum output cooling capacity of the outdoor unit is limited, resulting in excessive cooling output of the outdoor unit when there is a small load demand on the indoor unit, mismatch between the cooling demand of the indoor unit and the cooling output of the outdoor unit, large fluctuations in room temperature, frequent shutdowns, and affected user experience.

[0005] In a first aspect, the present application provides a control method for a multi-split air conditioning system, characterized in that the method is applied to a multi-split air conditioning system, wherein the multi-split air conditioning system includes at least one first outdoor unit and at least one second outdoor unit, and the air outlet directions of the first outdoor unit and the second outdoor unit are different. The method includes:

[0006] Obtain the type and cooling capacity of each currently connected outdoor unit; the type includes a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit;

[0007] determining a priority of each of the outdoor units based on a type of each of the outdoor units;

[0008] Get the current cooling capacity required by the indoor unit;

[0009] At least one of the outdoor units is controlled to operate according to the required cooling capacity, the unit cooling capacity of each of the outdoor units, and the priority.

[0010] As an optional implementation, the air outlet direction of the first outdoor unit is a horizontal spatial direction, and the air outlet direction of the second outdoor unit is a vertical spatial direction;

[0011] The determining the priority of each outdoor unit based on the type of each outdoor unit includes:

[0012] The priority of the outdoor unit of the first type is determined to be a first priority, and the priority of the outdoor unit of the second type is determined to be a second priority; the first priority is greater than the second priority.

[0013] As an optional implementation manner, determining the priority of the outdoor unit of the first type as the first priority and the priority of the outdoor unit of the second type as the second priority includes:

[0014] Determining a first target outdoor unit with the smallest cooling capacity according to the cooling capacity of each outdoor unit;

[0015] In the case where the type of the first target outdoor unit is determined to be the first type, the priority of the outdoor unit of the first type is determined to be the first priority, and the priority of the outdoor unit of the second type is determined to be the second priority.

[0016] As an optional implementation, the method further includes:

[0017] When the type of the first target outdoor unit is determined to be the second type, the priority of the outdoor unit of the first type is determined to be the second priority, and the priority of the outdoor unit of the second type is determined to be the first priority.

[0018] As an optional implementation, determining the priority of each outdoor unit based on the type of each outdoor unit includes:

[0019] Obtaining the installation environment corresponding to the outdoor unit;

[0020] The priority of each of the outdoor units is determined according to the installation environment and the type of each of the outdoor units.

[0021] As an optional implementation, the air outlet direction of the first outdoor unit is a horizontal spatial direction, and the air outlet direction of the second outdoor unit is a vertical spatial direction;

[0022] The step of determining the priority of each outdoor unit according to the installation environment and the type of each outdoor unit includes:

[0023] Determining, based on the installation environment, whether there is a first obstacle in the horizontal space corresponding to the installation point of the outdoor unit and in the direction of the air outlet of the first outdoor unit, and whether there is a second obstacle in the vertical space corresponding to the installation point of the outdoor unit and in the direction of the air outlet of the second outdoor unit;

[0024] When it is determined that the first obstacle exists in the horizontal space and the second obstacle does not exist in the vertical space, determining that the priority of the outdoor unit of the second type is a first priority and the priority of the outdoor unit of the first type is a second priority; the first priority is greater than the second priority;

[0025] When it is determined that the first obstacle does not exist in the horizontal space and the second obstacle exists in the vertical space, the priority of the outdoor unit of the first type is determined to be the first priority, and the priority of the outdoor unit of the second type is determined to be the second priority.

[0026] As an optional implementation, the method further includes:

[0027] When it is determined that the first obstacle exists in the horizontal space and the second obstacle exists in the vertical space, controlling each of the outdoor units to operate for a preset time period;

[0028] After controlling each of the outdoor units to operate for the preset time period, obtaining the exhaust pressure corresponding to each outdoor unit;

[0029] determining a target type corresponding to the outdoor unit having the minimum exhaust pressure;

[0030] The priority of outdoor units of the target type is determined as the first priority, and the priority of outdoor units of a type other than the target type is determined as the second priority.

[0031] As an optional implementation, the priority of the outdoor unit includes a first priority and a second priority, and the first priority is greater than the second priority;

[0032] The step of controlling the operation of at least one of the outdoor units according to the required cooling capacity, the cooling capacity of each outdoor unit, and the priority level includes:

[0033] Determine whether there is at least one second target outdoor unit among the outdoor units corresponding to the first priority whose cooling capacity is greater than the required cooling capacity;

[0034] When it is determined that there is at least one second target outdoor unit, controlling at least one outdoor unit having the first priority level to operate;

[0035] When it is determined that the second target outdoor unit does not exist, multiple outdoor units with the first priority and the second priority are controlled to operate in rotation according to their respective corresponding operating cycles; wherein the operating cycle of the outdoor unit corresponding to the first priority is greater than the operating cycle of the outdoor unit corresponding to the second priority.

[0036] As an optional implementation, when determining that there is at least one second target outdoor unit, controlling at least one outdoor unit having the first priority level to operate includes:

[0037] determining whether the second target outdoor unit includes a third target outdoor unit with the smallest cooling capacity among the outdoor units corresponding to the first priority;

[0038] When it is determined that the third target outdoor unit exists in the second target outdoor unit, controlling the third target outdoor unit to operate alone;

[0039] When it is determined that the third target outdoor unit does not exist in the second target outdoor unit, the outdoor units corresponding to the first priority are controlled to rotate according to their respective corresponding operating cycles, wherein the operating cycle of the third target outdoor unit is greater than the operating cycles of other outdoor units.

[0040] As an optional implementation, in the process of rotating the operation of multiple outdoor units having the first priority and the second priority according to their respective corresponding operation cycles, the method further includes:

[0041] Get the current system pressure;

[0042] When the system pressure is greater than a preset pressure threshold, the outdoor unit corresponding to the second priority is controlled to stop running.

[0043] As an optional implementation, when there is no obstacle in the direction of the air outlet of the outdoor unit corresponding to the first priority, and there is an obstacle in the direction of the air outlet of the outdoor unit corresponding to the second priority, in the process of controlling the plurality of outdoor units having the first priority and the second priority to rotate and operate according to their respective corresponding operation cycles, the method further includes:

[0044] When it is detected that the outdoor unit corresponding to the second priority is running, the fan module of the outdoor unit corresponding to the first priority is turned on.

[0045] As an optional implementation, obtaining the type and cooling capacity of each currently connected outdoor unit includes:

[0046] Obtaining a target unique identifier for each outdoor unit;

[0047] According to the preset correspondence between the unique identifier, type, and cooling capacity of the outdoor unit, the type and cooling capacity of the unit corresponding to the target unique identifier are determined.

[0048] In a second aspect, the present application provides a control device for a multi-split air conditioning system, which is applied to the multi-split air conditioning system, wherein the multi-split air conditioning system includes at least one first outdoor unit and at least one second outdoor unit, wherein the air outlet directions of the first outdoor unit and the second outdoor unit are different, and the device includes:

[0049] A first acquisition module is configured to acquire the type and cooling capacity of each currently connected outdoor unit; the type includes a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit;

[0050] a determining module, configured to determine a priority of each of the outdoor units based on a type of each of the outdoor units;

[0051] The second acquisition module is used to obtain the current required cooling capacity of the indoor unit;

[0052] The control module is used to control the operation of at least one of the outdoor units according to the required cooling capacity, the cooling capacity of each of the outdoor units, and the priority.

[0053] In a third aspect, the present application provides an air conditioner, characterized in that it includes: an indoor unit, at least one first outdoor unit, at least one second outdoor unit, a processor, a communication interface, a memory, and a communication bus;

[0054] Among them, the air outlet directions corresponding to the first outdoor unit and the second outdoor unit are different; the processor, the communication interface, and the memory communicate with each other through a communication bus; the memory is used to store computer programs; the processor is used to implement the control method of the multi-split air-conditioning system described in any one of the first aspects when executing the computer program.

[0055] In a fourth aspect, the present application provides a multi-split air-conditioning system, which includes the air conditioner described in the third aspect.

[0056] In a fifth aspect, the present application provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method of the multi-split air-conditioning system described in any one of the first aspects.

[0057] The technical solution provided by the embodiment of the present application obtains the type and unit cooling capacity of each currently connected outdoor unit, the types including a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit, determines the priority of each outdoor unit based on the type of each outdoor unit, obtains the current cooling capacity required by the indoor unit, and controls the operation of at least one outdoor unit based on the cooling capacity required, the cooling capacity of each outdoor unit, and the priority of each outdoor unit. This technical solution combines outdoor units with different air outlet directions. Since outdoor units with different air outlet directions have different upper and lower limits of the cooling capacity that can be achieved, combining the two can increase the output cooling capacity range of the outdoor unit and avoid the limitation of the minimum output cooling capacity. Based on this, when controlling the above-mentioned different types of outdoor units, the priority of each outdoor unit can be set according to the type of outdoor unit and the cooling capacity of the unit, and the optimal strategy for controlling the operation of the outdoor unit can be selected based on the cooling capacity required by the indoor unit. This can ensure that the cooling capacity output of the outdoor unit matches the cooling capacity demand of the indoor unit, thereby improving the matching degree between the cooling capacity output of the outdoor unit and the cooling capacity demand of the indoor unit, improving the stability of the room temperature, and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0059] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0060] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0061] Figure 1 A schematic structural diagram of a multi-split air conditioning system provided in an embodiment of the present application;

[0062] Figure 2 A schematic diagram of the application structure of an outdoor unit of the same type provided in an embodiment of the present application;

[0063] Figure 3 A schematic diagram of the application structure of another outdoor unit of the same type provided in an embodiment of the present application;

[0064] Figure 4A flow chart of an embodiment of a control method for a multi-split air conditioning system provided in an embodiment of the present application;

[0065] Figure 5 A flowchart of another control method for a multi-split air conditioning system provided in an embodiment of the present application;

[0066] Figure 6 A flow chart of another embodiment of a control method for a multi-split air conditioning system provided in an embodiment of the present application;

[0067] Figure 7 A flow chart of an embodiment of a control method for a multi-split air conditioning system provided in an embodiment of the present application;

[0068] Figure 8 A block diagram of an embodiment of a control device for a multi-split air conditioning system provided in an embodiment of the present application;

[0069] Figure 9 A schematic diagram of the structure of an air conditioner provided in an embodiment of the present application;

[0070] Figure 10 A schematic structural diagram of another multi-split air conditioning system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0072] The disclosure below provides many different embodiments or examples for implementing different configurations of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0073] In order to solve the technical problem in the prior art that the minimum output cooling capacity of the outdoor unit is limited, resulting in excessive outdoor unit output cooling capacity when the indoor unit has a small load demand, the cooling capacity demand of the indoor unit is not matched with the output cooling capacity of the outdoor unit, the room temperature fluctuates greatly, frequent shutdowns occur, and the user experience is affected, the present application provides a multi-split air-conditioning system and its control method, device, air conditioner and storage medium, which can combine outdoor units with different air outlet directions. Since the outdoor units with different air outlet directions have different upper and lower limits of the unit cooling capacity that can be achieved, the combination of the two can increase the output cooling capacity range of the outdoor unit and avoid the limitation of the minimum output cooling capacity. Based on this, when controlling the above-mentioned different types of outdoor units, the priority of each outdoor unit can be set according to the type of outdoor unit and the cooling capacity of the unit, and the optimal strategy can be selected to control the operation of the outdoor unit with reference to the required cooling capacity of the indoor unit. It can ensure that the cooling capacity output of the outdoor unit matches the cooling capacity demand of the indoor unit, thereby improving the matching degree between the cooling capacity output of the outdoor unit and the cooling capacity demand of the indoor unit, improving the stability of the room temperature, and enhancing the user experience.

[0074] To facilitate understanding of the control method of the multi-split air-conditioning system provided in the present application, the multi-split air-conditioning system involved in the present application is first illustrated below with an example.

[0075] See also Figure 1 , is a structural diagram of a multi-split air conditioning system provided in an embodiment of the present application. Figure 1 As shown, the multi-split air conditioning system 10 may include: a plurality of outdoor units 11 and a plurality of indoor units 12.

[0076] The plurality of outdoor units 11 may include two first outdoor units 111 and two second outdoor units 112 .

[0077] The multiple indoor units 12 may include an indoor unit 121, an indoor unit 122, and an indoor unit 123. The installation positions of the indoor unit 121, the indoor unit 122, and the indoor unit 123 may be different. The embodiment of the present application does not limit the type and number of indoor units.

[0078] Furthermore, the outdoor units included in the plurality of outdoor units 11 may include two different types of outdoor units. Figure 1 In the outdoor units shown, the two first outdoor units 111 are of the same type, the two second outdoor units 112 are of the same type, and the first outdoor unit 111 and the second outdoor unit 112 are of different types. The embodiment of the present application does not limit the number of outdoor units of each type. Figure 1 The example of each type including two outdoor units is used for illustration. The embodiment of the present application does not limit the number of outdoor unit types, which can be two different types of outdoor units, or three or four different types of outdoor units. Figure 1Only two types of outdoor units are used as examples.

[0079] In the embodiment of the present application, the types of outdoor units can be divided according to the direction of the air outlet of the outdoor unit, for example Figure 1 The second outdoor unit 112 shown may be an outdoor unit with an air outlet facing upward, and the first outdoor unit 111 may be an outdoor unit with an air outlet facing sideways.

[0080] Optionally, on the basis of the same air outlet direction, the two outdoor units 111 may have the same size and type or different sizes, and this embodiment of the present application does not impose any limitation on this.

[0081] In actual application, outdoor units with upward air outlets can also be used in combination, for example, see Figure 2 , is a schematic diagram of an application structure of an outdoor unit of the same type provided in an embodiment of the present application. Figure 2 As shown, the structure may include: four second outdoor units 112, and a plurality of indoor units 12 (including an indoor unit 121, an indoor unit 122, and an indoor unit 123).

[0082] Among them, the above-mentioned four second outdoor units 112 are all outdoor units with air outlets facing upward.

[0083] based on Figure 2 In the structure shown, since multiple outdoor units all have upward air outlets, and outdoor units with upward air outlets generally have a large cooling capacity (generally the minimum is 8HP and the maximum is 30HP), high cost, and the product occupies a large area, this application method is likely to result in the cooling capacity output of the outdoor unit being greater than the cooling capacity required by the indoor unit, as well as high cost and large area occupied.

[0084] Optionally, on the basis of the same air outlet direction, the two first outdoor units 111 may have the same size and type, or may be different, and this embodiment of the present application does not impose any limitation on this.

[0085] In actual application, outdoor units with air outlets facing sideways can also be used in combination, for example, see Figure 3 , is a schematic diagram of the application structure of another outdoor unit of the same type provided in the embodiment of the present application. Figure 3 As shown, the structure may include: four first outdoor units 111, and a plurality of indoor units 12 (including an indoor unit 121, an indoor unit 122, and an indoor unit 123).

[0086] The four first outdoor units 111 are all outdoor units with air outlets facing sideways (for example, with air outlets facing the front of the unit).

[0087] based on Figure 3In the structure shown, since the multiple outdoor units are all equipped with air outlets facing the side, and the outdoor units with air outlets facing the side generally have the characteristics of compact structure and uniform heat exchange of heat exchangers, the raw material cost of the same cooling capacity can generally be reduced by 10~20% compared with the multi-split units with upper air outlets. In addition, the product design is more flexible and the product size can be made very small, but the cooling capacity of the unit is small, generally the minimum can be 2HP and the maximum can be 24HP. Therefore, Figure 3 The application method shown may easily lead to the problem that the maximum cooling capacity output by the outdoor unit is limited.

[0088] In this regard, the present application provides Figure 1 The system structure shown, by combining different types of outdoor units and applying the control method of the multi-split air-conditioning system provided in this application, can improve the matching degree between the cooling output of the outdoor unit and the cooling demand of the indoor unit, improve the stability of the room temperature, and enhance the user experience.

[0089] See also Figure 4 , is a flow chart of an embodiment of a control method for a multi-split air conditioning system provided in an embodiment of the present application. As an embodiment, Figure 4 The process shown can be applied to a multi-split air conditioning system, which may include at least one first outdoor unit and at least one second outdoor unit. The air outlet directions of the first outdoor unit and the second outdoor unit are different, for example Figure 1 The first outdoor unit 111 and the second outdoor unit 112 are shown. Figure 4 As shown, the process may include the following steps:

[0090] Step 401: Obtain the type and cooling capacity of each currently connected outdoor unit, where the types include a first type and a second type. The first type indicates that the corresponding outdoor unit is a first outdoor unit, and the second type indicates that the corresponding outdoor unit is a second outdoor unit.

[0091] The above-mentioned type refers to the type corresponding to the air outlet direction of the outdoor unit. In the embodiment of the present application, when the air outlet directions of two outdoor units are different, it can be indicated that the two outdoor units belong to different types.

[0092] The cooling capacity of a unit refers to the amount of heat absorbed from the indoor environment and transferred to the outside by the outdoor unit under specific operating conditions. This capacity is measured in watts (W) or kilowatts (kW). This capacity reflects the cooling capacity of the air conditioner. A higher value indicates a greater cooling capacity per unit time and a stronger cooling effect. For example, an outdoor unit with a cooling capacity of 5kW can transfer 5,000 joules of heat from the indoor environment per unit time.

[0093] In the embodiment of the present application, since the multi-split air-conditioning system may include different types of outdoor units, the execution subject of the embodiment of the present application may first obtain the type and cooling capacity of each currently connected outdoor unit before controlling the outdoor unit.

[0094] Among them, since the multi-split system may include a first outdoor unit and a second outdoor unit, the types of the outdoor units may include a first type and a second type. The first type can be used to characterize the outdoor unit as the first outdoor unit, and the second type can be used to characterize the outdoor unit as the second outdoor unit.

[0095] As an optional implementation method, technicians can set a corresponding unique identifier for each outdoor unit in advance when installing the outdoor unit. Based on this, when the executing entity of the embodiment of the present application obtains the type and cooling capacity of each outdoor unit, it can first obtain the target unique identifier of each outdoor unit, and pre-store the corresponding relationship between the unique identifier, type, and cooling capacity of each outdoor unit in the installed outdoor units.

[0096] Afterwards, the type and unit cooling capacity corresponding to the target unique identifier may be determined based on the pre-set correspondence between the unique identifier, type, and cooling capacity of the outdoor unit.

[0097] As an optional implementation method, the above correspondence can be searched using the above target unique identifier as a keyword to obtain a target correspondence containing the keyword, and the type and unit cooling capacity contained in the target correspondence are determined as the type and unit cooling capacity corresponding to the target unique identifier.

[0098] Furthermore, the multi-split system may include a third outdoor unit of another type, and the above-mentioned types may further include a third type. For example, if the air outlet of the first outdoor unit is directed upward relative to the main body, and the air outlet of the second outdoor unit is directed forward relative to the main body, then the air outlet of the third outdoor unit may be directed diagonally forward relative to the main body (at a position intermediate between the upper and the front).

[0099] Step 402: Determine the priority of each outdoor unit based on the type of each outdoor unit.

[0100] The above priority refers to the level of priority of each outdoor unit when controlling the operation of each outdoor unit.

[0101] In the embodiment of the present application, since different types of outdoor units have corresponding units with different cooling capacities and operating efficiencies, in order to save energy and improve efficiency as much as possible, the executing entity of the embodiment of the present application can determine the corresponding priority for each outdoor unit according to the type of each outdoor unit.

[0102] As for how to determine the priority of each outdoor unit based on the type of each outdoor unit, you can refer to the following. Figure 5 and Figure 6 The process shown is explained below and will not be described in detail here.

[0103] Step 403: Obtain the current cooling capacity required by the indoor unit.

[0104] Step 404: Control at least one outdoor unit to operate according to the required cooling capacity and the cooling capacity and priority of each outdoor unit.

[0105] The following is a unified description of step 403 and step 404:

[0106] The above-mentioned required cooling capacity refers to the cooling capacity required by the indoor unit in the multi-split air-conditioning system to reach the target temperature set by the user.

[0107] In an embodiment of the present application, to better match the operation of the outdoor unit with the demand of the indoor unit, the execution subject of the embodiment of the present application can obtain the current cooling capacity required by the indoor unit. The operation of at least one outdoor unit can then be controlled based on the cooling capacity required, the cooling capacity of each outdoor unit, and the priority level. This method can better match the total cooling capacity of the outdoor units with the cooling capacity required by the indoor units, while saving energy and improving efficiency.

[0108] As an optional implementation method, when the executing entity of the embodiment of the present application obtains the current required cooling capacity of the indoor unit, it can obtain the temperature difference between the current indoor temperature and the set target temperature, and input the temperature difference into the preset cooling capacity calculation formula to obtain the current required cooling capacity of the indoor unit.

[0109] As for how to control at least one outdoor unit to operate according to the required cooling capacity and the cooling capacity and priority of each outdoor unit, it can be described in the following. Figure 7 The process shown is explained below and will not be described in detail here.

[0110] The technical solution provided by the embodiment of the present application obtains the type and unit cooling capacity of each currently connected outdoor unit, the types including a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit, determines the priority of each outdoor unit based on the type of each outdoor unit, obtains the current cooling capacity required by the indoor unit, and controls the operation of at least one outdoor unit based on the cooling capacity required, the cooling capacity of each outdoor unit, and the priority of each outdoor unit. This technical solution combines outdoor units with different air outlet directions. Since outdoor units with different air outlet directions have different upper and lower limits of the cooling capacity that can be achieved, combining the two can increase the output cooling capacity range of the outdoor unit and avoid the limitation of the minimum output cooling capacity. Based on this, when controlling the above-mentioned different types of outdoor units, the priority of each outdoor unit can be set according to the type of outdoor unit and the cooling capacity of the unit, and the optimal strategy for controlling the operation of the outdoor unit can be selected based on the cooling capacity required by the indoor unit. This can ensure that the cooling capacity output of the outdoor unit matches the cooling capacity demand of the indoor unit, thereby improving the matching degree between the cooling capacity output of the outdoor unit and the cooling capacity demand of the indoor unit, improving the stability of the room temperature, and enhancing the user experience.

[0111] See also Figure 5 , which is a flow chart of an embodiment of another control method for a multi-split air-conditioning system provided in an embodiment of the present application. Figure 5 The process shown in Figure 4 Based on the process shown in the figure, it describes how to determine the priority of each outdoor unit based on the type of each outdoor unit when the air outlet direction of the first outdoor unit is horizontal and the air outlet direction of the second outdoor unit is vertical. Figure 5 As shown, the process may include the following steps:

[0112] Step 501: When the air outlet direction of the first outdoor unit is the horizontal spatial direction and the air outlet direction of the second outdoor unit is the vertical spatial direction, determine that the priority of the outdoor unit of the first type is the first priority and the priority of the outdoor unit of the second type is the second priority; the above-mentioned first priority is greater than the second priority.

[0113] The above-mentioned horizontal spatial direction refers to the spatial direction relative to the fuselage of the outdoor unit in the horizontal direction, which may include but is not limited to: the front of the fuselage, the left side of the fuselage, the right side of the fuselage, and the rear side of the fuselage.

[0114] The vertical spatial direction refers to the spatial direction in the vertical direction relative to the fuselage of the outdoor unit, which may include but is not limited to: above the fuselage and below the fuselage.

[0115] In the embodiment of the present application, by Figure 1From the description of the structure shown, it can be seen that the minimum unit cooling capacity of the first outdoor unit whose air outlet direction is in the horizontal spatial direction is relatively low. Therefore, in order to meet the required cooling capacity of the indoor unit as much as possible, the executing entity of the embodiment of the present application may determine the priority of the outdoor unit of the first type as the first priority, and the priority of the outdoor unit of the second type as the second priority, that is, set the priority of the first outdoor unit to the first priority, and determine the priority of the second outdoor unit to the second priority, wherein the first priority is greater than the second priority.

[0116] Furthermore, since there may be a situation where the cooling capacity of the second outdoor unit is smaller than that of the first outdoor unit, the executing entity of the embodiment of the present application may determine the outdoor unit with the smallest cooling capacity according to the cooling capacity of each outdoor unit when determining the priority of each outdoor unit (for ease of distinction, the outdoor unit with the smallest cooling capacity will be referred to as the "first target outdoor unit" below).

[0117] Thereafter, it may be determined whether the type of the first target outdoor unit is the first type.

[0118] Optionally, when it is determined that the type of the first target outdoor unit is the first type, the priority of the outdoor unit of the first type may be determined as the first priority, and the priority of the outdoor unit of the second type may be determined as the second priority.

[0119] Furthermore, in the case where the type of the first target outdoor unit is determined to be the second type, the priority of the outdoor unit of the second type may be determined to be the second priority and the priority of the outdoor unit of the second type may be determined to be the first priority.

[0120] The technical solution provided in the embodiment of the present application determines that, when the air outlet direction of the first outdoor unit is in the horizontal spatial direction and the air outlet direction of the second outdoor unit is in the vertical spatial direction, the priority of the outdoor unit of the first type is determined to be the first priority, and the priority of the outdoor unit of the second type is determined to be the second priority; the above-mentioned first priority is greater than the second priority. This technical solution determines that the outdoor unit with the air outlet direction in the horizontal spatial direction has a higher priority based on the type of the outdoor unit itself. Since the unit cooling capacity corresponding to the outdoor unit with the air outlet direction in the horizontal spatial direction can achieve a smaller unit cooling capacity, the outdoor unit can improve the matching degree between the total unit cooling capacity of the outdoor unit operation and the required cooling capacity of the indoor unit, thereby realizing the determination of the priority of each outdoor unit according to the type of the outdoor unit, thereby improving the matching degree between the outdoor unit output cooling capacity and the indoor unit cooling capacity demand.

[0121] See also Figure 6 , which is a flow chart of an embodiment of a control method for a multi-split air-conditioning system provided in an embodiment of the present application. Figure 6 The process shown in Figure 4Based on the process shown in the figure, this article describes how to determine the priority of each outdoor unit according to the installation environment and type of the outdoor unit. Figure 6 As shown, the process may include the following steps:

[0122] Step 601: Obtain the installation environment corresponding to the outdoor unit.

[0123] Step 602: Determine the priority of each outdoor unit based on the above installation environment and the type of each outdoor unit.

[0124] The following is a unified description of step 601 and step 602:

[0125] The above-mentioned installation environment refers to the environment corresponding to the installation location of the outdoor unit, which may include but is not limited to: the installation location of the outdoor unit, obstacles around the installation location of the outdoor unit, etc. The above-mentioned obstacles may be walls, wooden boards, etc., and the embodiments of this application do not limit this.

[0126] In an embodiment of the present application, since factors such as the heat exchange efficiency of the outdoor unit are related to the installation environment, in order to improve the efficiency of the outdoor unit operation, the executing entity of the embodiment of the present application can obtain the installation environment corresponding to the outdoor unit and determine the priority of each outdoor unit based on the installation environment and the type of each outdoor unit.

[0127] As an optional implementation method, when installing the outdoor unit, the technician can set the current installation environment of the outdoor unit, such as setting the obstacle information around the outdoor unit. Based on this, the execution subject of the embodiment of the present application can directly obtain the pre-set installation information corresponding to the outdoor unit.

[0128] As another optional implementation method, the execution subject of the embodiment of the present application can capture an image corresponding to the installation location of the outdoor unit through a preset image acquisition module, and recognize the image to obtain the installation environment corresponding to the outdoor unit.

[0129] As an optional implementation method, the air outlet direction of the first outdoor unit may be in the horizontal spatial direction, and the air outlet direction of the second outdoor unit may be in the vertical spatial direction. Based on this, when the executive body of the embodiment of the present application determines the priority of each outdoor unit according to the installation environment and the type of each outdoor unit, it may determine whether there is a first obstacle in the horizontal space corresponding to the installation point of the outdoor unit, and whether there is a second obstacle in the vertical space corresponding to the outdoor unit, in the air outlet direction of the second outdoor unit. The first obstacle and the second obstacle may be the same obstacle or different obstacles, and the embodiment of the present application does not impose any restrictions on this. The first obstacle and the second obstacle may be obstacles such as walls and wooden boards.

[0130] Optionally, when it is determined that there is a first obstacle in the horizontal space and no second obstacle in the vertical space, it means that the exhaust of the first outdoor unit is limited, which may easily cause heat accumulation and poor heat exchange effect. Therefore, the priority of the outdoor unit of the second type may be determined as the first priority, and the priority of the outdoor unit of the first type may be determined as the second priority, that is, the priority of the first outdoor unit may be determined as the second priority, and the priority of the second outdoor unit may be determined as the first priority.

[0131] Optionally, when it is determined that there is no first obstacle in the horizontal space and there is a second obstacle in the vertical space, it means that the exhaust of the second outdoor unit is restricted, which may easily cause heat accumulation and poor heat exchange effect. Therefore, the priority of the outdoor unit of the first type can be determined as the first priority, and the priority of the outdoor unit of the second type can be determined as the second priority, that is, the priority of the first outdoor unit is determined as the first priority, and the priority of the second outdoor unit is determined as the second priority.

[0132] Optionally, if a first obstacle is determined to exist in the horizontal space and a second obstacle is determined to exist in the vertical space, this indicates that the exhaust of both the first and second outdoor units is restricted, which can easily cause heat accumulation and poor heat exchange. Therefore, to further determine the priority of each outdoor unit, the execution subject of the embodiment of the present application can control the preset operating time of each outdoor unit. The preset operating time can be a pre-set operating cycle of the outdoor unit, such as 5 minutes or 10 minutes.

[0133] Afterwards, after controlling each outdoor unit to operate for the preset time period, the exhaust pressure corresponding to each outdoor unit can be obtained, and the target type corresponding to the outdoor unit with the minimum exhaust pressure can be determined.

[0134] Finally, the priority of the outdoor units of the target type may be determined as the first priority, and the priority of the outdoor units of a type other than the target type may be determined as the second priority.

[0135] As an exemplary embodiment, when the outdoor unit with the smallest exhaust pressure is the first outdoor unit, the above-mentioned target type is the first type, so the priority of the first type of outdoor unit can be determined as the first priority, and the priority of the second type of outdoor unit can be determined as the second priority.

[0136] As another exemplary embodiment, when the outdoor unit with the lowest exhaust pressure is the second outdoor unit, the above-mentioned target type is the second type. Therefore, the priority of the first type of outdoor unit can be determined as the second priority, and the priority of the second type of outdoor unit can be determined as the first priority.

[0137] Optionally, when it is determined that there is no first obstacle in the horizontal space and no second obstacle in the vertical space, it means that the exhaust of the first outdoor unit and the second outdoor unit is not restricted at this time. Therefore, the priority of the outdoor unit of the first type can be determined as the first priority, and the priority of the outdoor unit of the second type can be determined as the second priority, that is, the priority of the first outdoor unit is set to the first priority, and the priority of the second outdoor unit is determined to the second priority, where the first priority is greater than the second priority.

[0138] Furthermore, since there may be a situation where the cooling capacity of the second outdoor unit is smaller than that of the first outdoor unit, the executing entity of the embodiment of the present application may determine the outdoor unit with the smallest cooling capacity according to the cooling capacity of each outdoor unit when determining the priority of each outdoor unit (for ease of distinction, the outdoor unit with the smallest cooling capacity will be referred to as the "first target outdoor unit" below).

[0139] Thereafter, it may be determined whether the type of the first target outdoor unit is the first type.

[0140] As an optional implementation, when it is determined that the type of the first target outdoor unit is the first type, the priority of the outdoor unit of the first type can be determined as the first priority, and the priority of the outdoor unit of the second type can be determined as the second priority.

[0141] As another optional implementation, when it is determined that the type of the first target outdoor unit is the second type, the priority of the outdoor unit of the second type can be determined to be the second priority, and the priority of the outdoor unit of the second type can be determined to be the first priority.

[0142] The technical solution provided in the embodiments of the present application determines the priority of each outdoor unit by obtaining the installation environment corresponding to the outdoor unit and determining the priority of each outdoor unit based on the installation environment and the type of the outdoor unit. This technical solution, by determining the priority of the outdoor unit by reference to the installation environment and the type of the outdoor unit, can reduce the priority of outdoor units blocked by obstacles in the installation environment, reduce the impact of the installation environment on the operation of the outdoor unit, and realize the rapid determination of the priority of the outdoor unit based on the installation environment, thereby improving the operating efficiency of the outdoor unit.

[0143] See also Figure 7 , which is a flow chart of an embodiment of a control method for a multi-split air-conditioning system provided in an embodiment of the present application. Figure 7 The process shown in Figure 4 Based on the process shown, it describes how to control the operation of at least one outdoor unit according to the required cooling capacity and the cooling capacity and priority of each outdoor unit when the priority of the outdoor unit includes the first priority and the second priority, and the first priority is greater than the second priority. Figure 7As shown, the process may include the following steps:

[0144] Step 701: Determine whether there is at least one second target outdoor unit whose cooling capacity is greater than the required cooling capacity among the outdoor units corresponding to the first priority. If so, execute step 702; if not, execute step 703.

[0145] Step 702: Control at least one outdoor unit with a first priority to operate.

[0146] Step 703: Control multiple outdoor units with first and second priorities to operate in rotation according to their corresponding operating cycles; wherein the operating cycle of the outdoor unit corresponding to the first priority is greater than the operating cycle of the outdoor unit corresponding to the second priority.

[0147] The following is a unified description of steps 701 to 703:

[0148] The second target outdoor unit refers to an outdoor unit with a first priority whose cooling capacity is greater than the required cooling capacity of the indoor unit.

[0149] In this embodiment of the present application, since the priority of each outdoor unit is pre-determined, when controlling the operation of the outdoor units, the outdoor units with the first priority can be operated preferentially. Based on this, the execution subject of this embodiment of the present application can first determine whether there is at least one outdoor unit with a cooling capacity greater than the required cooling capacity among the outdoor units corresponding to the first priority (for ease of distinction, the outdoor units with the first priority whose cooling capacity is greater than the required cooling capacity will be referred to as the "second target outdoor unit" below).

[0150] Optionally, when it is determined that there is at least one second target outdoor unit, it means that only running the outdoor unit with the first priority can meet the required cooling capacity of the indoor unit. Therefore, at least one outdoor unit with the first priority can be controlled to run, so as to meet the required cooling capacity of the indoor unit.

[0151] As an exemplary embodiment, it can be determined whether the second target outdoor unit includes the third target outdoor unit with the smallest cooling capacity among the total number of outdoor units corresponding to the first priority. If it is determined that the third target outdoor unit exists among the second target outdoor units, it means that operating only the third target outdoor unit with the smallest cooling capacity can meet the required cooling capacity. Therefore, the third target outdoor unit can be controlled to operate alone. If it is determined that the third target outdoor unit does not exist among the second target outdoor units, it means that the third target outdoor unit with the smallest cooling capacity among the outdoor units of the first priority cannot meet the required cooling capacity. Therefore, the outdoor units corresponding to the first priority can be controlled to rotate and operate according to their respective corresponding operating cycles. Corresponding operating cycles can be pre-set for each outdoor unit corresponding to the first priority, and because the third target outdoor unit consumes less energy, the operating cycle of the third target outdoor unit is longer than the operating cycles of the other outdoor units.

[0152] Optionally, if it is determined that the second target outdoor unit does not exist, it indicates that operating only the outdoor unit with the first priority cannot meet the required cooling capacity of the indoor unit. Therefore, the plurality of outdoor units with the first and second priorities may be controlled to operate in rotation according to their respective operating cycles, thereby achieving the required cooling capacity. The outdoor units with different priorities may be pre-set with corresponding operating cycles, and the operating cycle of the outdoor unit corresponding to the first priority is greater than the operating cycle of the outdoor unit corresponding to the second priority.

[0153] To help you understand the operation of the outdoor unit, the following example is given:

[0154] For example, assume that the outdoor units include outdoor unit A, outdoor unit B, outdoor unit C, and outdoor unit D. Further assume that the cooling capacity of the unit QA (the cooling capacity of outdoor unit A) > QB (the cooling capacity of outdoor unit B) > QC (the cooling capacity of outdoor unit C) > QD (the cooling capacity of outdoor unit D), and that outdoor unit D is the first outdoor unit. Therefore, the first outdoor unit has the highest priority. Further assuming that the required cooling capacity of the indoor units is Qn, based on this, the control strategies for outdoor units A, B, C, and D can be shown in Table 1 below:

[0155] Table 1

[0156]

[0157] In one embodiment, in the process of controlling multiple outdoor units of the first priority and the second priority to rotate in operation according to their respective corresponding operating cycles, in order to avoid safety problems caused by excessive system pressure, the executing entity of the embodiment of the present application can obtain the current system pressure and determine whether the system pressure is greater than a preset pressure threshold.

[0158] Optionally, when it is determined that the system pressure is greater than the pressure threshold, the outdoor unit corresponding to the second priority may be controlled to stop running.

[0159] In one embodiment, by Figure 6 As can be seen from the shown process, the determination of the outdoor unit priority may be related to whether there is an obstacle in the direction of the air outlet of the outdoor unit. Therefore, when there is no obstacle in the direction of the air outlet of the outdoor unit corresponding to the first priority, and there is an obstacle in the direction of the air outlet of the outdoor unit corresponding to the second priority, in the process of controlling multiple outdoor units with the first priority and the second priority to rotate according to their respective corresponding operating cycles, when it is detected that the outdoor unit corresponding to the second priority is running, the fan module of the outdoor unit corresponding to the first priority can be turned on to increase the circulating exhaust around the unit, reduce the return air temperature of the outdoor unit corresponding to the second priority, improve the heat exchange effect, and thus improve the operating efficiency of the outdoor unit.

[0160] To help understand the alternating operation of the first- and second-priority outdoor units, the following describes the operation of the outdoor units in different installation environments, assuming the first outdoor unit's airflow direction is toward the side and the second outdoor unit's airflow direction is upward.

[0161] Scenario 1: The installation environment has a wall on the top and no wall on the air outlet side:

[0162] ① Because the second outdoor unit's exhaust is limited in this scenario, heat accumulation and poor heat exchange are likely to occur. Therefore, the first outdoor unit is prioritized. When the first outdoor unit cannot meet the load demand (required cooling capacity) on the indoor unit side, the second outdoor unit is activated. The first outdoor unit's operating cycle should be longer than the second outdoor unit.

[0163] ② When the system pressure is higher than a certain pressure, the second outdoor unit will be automatically stopped and only the first outdoor unit will be running.

[0164] ③ When only the second outdoor unit is running, the first outdoor unit starts the fan system alone to increase the circulating exhaust around the unit, reduce the return air temperature of the second outdoor unit, and improve the heat exchange effect.

[0165] Scenario 2: The installation environment is an installation scenario where there is no wall on the top and a wall on the air outlet side:

[0166] ① Because the first outdoor unit's exhaust is limited in this scenario, heat accumulation and poor heat exchange are likely to occur. Therefore, the program control prioritizes the operation of the second outdoor unit. When the second outdoor unit cannot meet the load demand (required cooling capacity) on the indoor unit side, the first outdoor unit is activated. The second outdoor unit's operating cycle should be longer than the first outdoor unit.

[0167] ② When the exhaust side pressure of the system is higher than a certain pressure, the first outdoor unit will be automatically stopped and only the second outdoor unit will be operated.

[0168] ③ When only the first outdoor unit is running, the second outdoor unit will start the fan system separately to increase the circulating exhaust around the unit, reduce the return air temperature of the first outdoor unit, and improve the heat exchange effect.

[0169] Scenario 3: The installation environment is a wall on the top and the air outlet side:

[0170] ① Since the exhaust of the second outdoor unit and the first outdoor unit will be restricted in this scenario, the second outdoor unit and the first outdoor unit are controlled to operate separately for a certain period for comparison.

[0171] ② During the comparison process, if the system exhaust pressure is lower when the second outdoor unit is operating alone, the second outdoor unit is defined as the outdoor unit with higher operation priority. When the second outdoor unit cannot meet the load demand (required cooling capacity) on the indoor unit side, the first outdoor unit is activated. The second outdoor unit's operating cycle must be longer than the first outdoor unit.

[0172] ③ When the system pressure is higher than a certain pressure, the first outdoor unit will be automatically stopped and only the second outdoor unit will be operated.

[0173] Scenario 4: If the installation environment has no top wall or air outlet wall, or if no installation scenario is obtained, the outdoor unit is controlled according to the control strategy in Table 1.

[0174] The technical solution provided by the embodiment of the present application determines whether there is at least one second target outdoor unit whose unit cooling capacity is greater than the above-mentioned required cooling capacity among the outdoor units corresponding to the first priority. If so, at least one outdoor unit with the first priority is controlled to operate; if not, multiple outdoor units with the first priority and the second priority are controlled to rotate and operate according to their respective corresponding operating cycles; wherein the operating cycle of the outdoor unit corresponding to the first priority is greater than the operating cycle of the outdoor unit corresponding to the second priority. This technical solution determines the control strategy for the outdoor unit based on the unit cooling capacity and priority of the outdoor unit. On the basis of ensuring the required cooling capacity, it can reduce the cooling waste of the outdoor unit and improve the operating efficiency of the outdoor unit, thereby improving the matching degree between the cooling capacity output of the outdoor unit and the cooling capacity demand of the indoor unit, improving the stability of the room temperature, and improving the user experience while improving the operating efficiency of the outdoor unit.

[0175] See also Figure 8 , is a block diagram of an embodiment of a control device for a multi-split air conditioning system provided in an embodiment of the present application. As an embodiment, the device can be applied to a multi-split air conditioning system (e.g. Figure 1The multi-split air conditioning system shown in FIG2 includes at least one first outdoor unit and at least one second outdoor unit, and the air outlet directions of the first outdoor unit and the second outdoor unit are different. Figure 8 As shown, the device may include:

[0176] The first acquisition module 81 is configured to acquire the type and cooling capacity of each currently connected outdoor unit; the type includes a first type and a second type, wherein the first type indicates that the corresponding outdoor unit is the first outdoor unit, and the second type indicates that the corresponding outdoor unit is the second outdoor unit;

[0177] a determination module 82 for determining a priority of each outdoor unit based on a type of each outdoor unit;

[0178] The second acquisition module 83 is used to obtain the current required cooling capacity of the indoor unit;

[0179] The control module 84 is configured to control the operation of at least one of the outdoor units according to the required cooling capacity, the cooling capacity of each outdoor unit, and the priority.

[0180] like Figure 9 As shown in FIG, a schematic diagram of the structure of an air conditioner provided in an embodiment of the present application. Figure 9 As shown, the air conditioner may include a processor 91, a communication interface 92, a memory 93, a communication bus 94, a plurality of indoor units 12, at least one first outdoor unit 111 (a first outdoor unit 111 is taken as an example in the figure), and at least one second outdoor unit 112 (a second outdoor unit 112 is taken as an example in the figure), wherein the air outlet directions corresponding to the first outdoor unit 111 and the second outdoor unit 112 are different; the processor 91, the communication interface 92, and the memory 93 communicate with each other through the communication bus 94.

[0181] Memory 93, for storing computer programs;

[0182] Multiple indoor units 12 are used to adjust the indoor temperature. The embodiment of the present application does not limit the number and type of indoor units.

[0183] In one embodiment of the present application, the processor 91 is configured to execute a program stored in the memory 93 to implement the control method of the multi-split air conditioning system provided by any of the aforementioned method embodiments, including:

[0184] Obtain the type and cooling capacity of each currently connected outdoor unit; the type includes a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit;

[0185] determining a priority of each of the outdoor units based on a type of each of the outdoor units;

[0186] Get the current cooling capacity required by the indoor unit;

[0187] At least one of the outdoor units is controlled to operate according to the required cooling capacity, the unit cooling capacity of each of the outdoor units, and the priority.

[0188] See also Figure 10 , is a structural diagram of another multi-split air conditioning system provided in an embodiment of the present application. Figure 10 The multi-split air conditioning system 1000 may include: an air conditioner 1001. The air conditioner 1001 may be Figure 9 Air conditioning shown.

[0189] An embodiment of the present application further provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the control method for a multi-split air-conditioning system provided in any of the aforementioned method embodiments.

[0190] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and 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 may be selected based on actual needs to achieve the objectives of this embodiment.

[0191] Through the description of the above embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a general hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the relevant technology, 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, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0192] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0193] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A control method for a multi-split air conditioning system, characterized in that: Applied to a multi-split air conditioning system, the multi-split air conditioning system includes at least one first outdoor unit and at least one second outdoor unit, the first outdoor unit and the second outdoor unit having air outlets in different directions, the method comprising: Obtain the type and cooling capacity of each currently connected outdoor unit; the type includes a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit; determining a priority of each of the outdoor units based on a type of each of the outdoor units; Get the current cooling capacity required by the indoor unit; controlling the operation of at least one of the outdoor units according to the required cooling capacity, the cooling capacity of each of the outdoor units, and the priority; Wherein, determining the priority of each outdoor unit based on the type of each outdoor unit includes: acquiring an installation environment corresponding to the outdoor unit; determining the priority of each outdoor unit according to the installation environment and the type of each outdoor unit; The air outlet direction of the first outdoor unit is the horizontal space direction, and the air outlet direction of the second outdoor unit is the vertical space direction; The step of determining the priority of each outdoor unit according to the installation environment and the type of each outdoor unit includes: Determining, based on the installation environment, whether there is a first obstacle in the horizontal space corresponding to the installation point of the outdoor unit and in the direction of the air outlet of the first outdoor unit, and whether there is a second obstacle in the vertical space corresponding to the installation point of the outdoor unit and in the direction of the air outlet of the second outdoor unit; When it is determined that the first obstacle exists in the horizontal space and the second obstacle exists in the vertical space, controlling each of the outdoor units to operate for a preset time period; After controlling each of the outdoor units to operate for the preset time period, obtaining the exhaust pressure corresponding to each outdoor unit; determining a target type corresponding to the outdoor unit having the minimum exhaust pressure; The priority of outdoor units of the target type is determined as a first priority, and the priority of outdoor units of a type other than the target type is determined as a second priority; the first priority is greater than the second priority.

2. The method according to claim 1, characterized in that The method further comprises: When it is determined that the first obstacle exists in the horizontal space and the second obstacle does not exist in the vertical space, determining that the priority of the outdoor unit of the second type is the first priority and the priority of the outdoor unit of the first type is the second priority; When it is determined that the first obstacle does not exist in the horizontal space and the second obstacle exists in the vertical space, the priority of the outdoor unit of the first type is determined to be the first priority, and the priority of the outdoor unit of the second type is determined to be the second priority.

3. The method according to claim 2, characterized in that The step of controlling the operation of at least one of the outdoor units according to the required cooling capacity, the cooling capacity of each outdoor unit, and the priority level includes: Determine whether there is at least one second target outdoor unit among the outdoor units corresponding to the first priority whose cooling capacity is greater than the required cooling capacity; When it is determined that there is at least one second target outdoor unit, controlling at least one outdoor unit having the first priority level to operate; When it is determined that the second target outdoor unit does not exist, multiple outdoor units with the first priority and the second priority are controlled to operate in rotation according to their respective corresponding operating cycles; wherein the operating cycle of the outdoor unit corresponding to the first priority is greater than the operating cycle of the outdoor unit corresponding to the second priority.

4. The method according to claim 3, characterized in that The controlling the operation of at least one outdoor unit having the first priority level when determining that at least one second target outdoor unit exists includes: determining whether the second target outdoor unit includes a third target outdoor unit with the smallest cooling capacity among the outdoor units corresponding to the first priority; When it is determined that the third target outdoor unit exists in the second target outdoor unit, controlling the third target outdoor unit to operate alone; When it is determined that the third target outdoor unit does not exist in the second target outdoor unit, the outdoor units corresponding to the first priority are controlled to rotate according to their respective corresponding operating cycles, wherein the operating cycle of the third target outdoor unit is greater than the operating cycles of other outdoor units.

5. The method according to claim 3, characterized in that In the process of controlling the plurality of outdoor units having the first priority and the second priority to rotate and operate according to their respective corresponding operation cycles, the method further includes: Get the current system pressure; When the system pressure is greater than a preset pressure threshold, the outdoor unit corresponding to the second priority is controlled to stop running.

6. The method according to claim 3, characterized in that When there is no obstacle in the direction of the air outlet of the outdoor unit corresponding to the first priority and there is an obstacle in the direction of the air outlet of the outdoor unit corresponding to the second priority, during the process of rotating the operation of the plurality of outdoor units having the first priority and the second priority according to their respective corresponding operation cycles, the method further includes: When it is detected that the outdoor unit corresponding to the second priority is running, the fan module of the outdoor unit corresponding to the first priority is turned on.

7. The method according to claim 1, characterized in that The step of obtaining the type and cooling capacity of each currently connected outdoor unit includes: Obtaining a target unique identifier for each outdoor unit; According to the preset correspondence between the unique identifier, type, and cooling capacity of the outdoor unit, the type and cooling capacity of the unit corresponding to the target unique identifier are determined.

8. A control device for a multi-split air conditioning system, characterized in that: Applicable to a multi-split air conditioning system, the multi-split air conditioning system includes at least one first outdoor unit and at least one second outdoor unit, the first outdoor unit and the second outdoor unit have air outlets in different directions, the device includes: A first acquisition module is configured to acquire the type and cooling capacity of each currently connected outdoor unit; the type includes a first type and a second type, the first type indicating that the corresponding outdoor unit is the first outdoor unit, and the second type indicating that the corresponding outdoor unit is the second outdoor unit; a determining module, configured to determine a priority of each of the outdoor units based on a type of each of the outdoor units; The second acquisition module is used to obtain the current required cooling capacity of the indoor unit; a control module, configured to control the operation of at least one of the outdoor units according to the required cooling capacity, the cooling capacity of each of the outdoor units, and the priority; Wherein, determining the priority of each outdoor unit based on the type of each outdoor unit includes: acquiring an installation environment corresponding to the outdoor unit; determining the priority of each outdoor unit according to the installation environment and the type of each outdoor unit; The air outlet direction of the first outdoor unit is the horizontal space direction, and the air outlet direction of the second outdoor unit is the vertical space direction; The step of determining the priority of each outdoor unit according to the installation environment and the type of each outdoor unit includes: Determining, based on the installation environment, whether there is a first obstacle in the horizontal space corresponding to the installation point of the outdoor unit and in the direction of the air outlet of the first outdoor unit, and whether there is a second obstacle in the vertical space corresponding to the installation point of the outdoor unit and in the direction of the air outlet of the second outdoor unit; When it is determined that the first obstacle exists in the horizontal space and the second obstacle exists in the vertical space, controlling each of the outdoor units to operate for a preset time period; After controlling each of the outdoor units to operate for the preset time period, obtaining the exhaust pressure corresponding to each outdoor unit; determining a target type corresponding to the outdoor unit having the minimum exhaust pressure; The priority of outdoor units of the target type is determined as a first priority, and the priority of outdoor units of a type other than the target type is determined as a second priority; the first priority is greater than the second priority.

9. An air conditioner, characterized in that: include: An indoor unit, at least one first outdoor unit, at least one second outdoor unit, a processor, a communication interface, a memory, and a communication bus; In which, the air outlet directions corresponding to the first outdoor unit and the second outdoor unit are different; the processor, the communication interface, and the memory communicate with each other through a communication bus; the memory is used to store computer programs; the processor is used to implement the control method of the multi-split air-conditioning system according to any one of claims 1 to 7 when executing the computer program.

10. A multi-split air conditioning system, characterized in that: The multi-split air conditioning system includes the air conditioner according to claim 9.

11. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method of the multi-split air-conditioning system according to any one of claims 1 to 7 is implemented.

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