Compressor capacity distribution method for multi-connected air conditioner and multi-connected air conditioner

Abstract

The application discloses a kind of compressor capacity distribution methods of multiple connected air conditioner and multiple connected air conditioner, the multiple connected air conditioner includes one or more outdoor units, outdoor unit includes one or more compressors, the rated capacity of each compressor is same or different, the method includes: when indoor unit is opened and runs, and multiple connected air conditioner includes multiple outdoor units, obtain the total demand capacity of indoor unit, based on total demand capacity and the rated capacity of each outdoor unit Determine the number of opening outdoor unit;Based on total demand capacity and the number of opening outdoor unit, each opening outdoor unit is distributed according to Levy distribution mode Capacity, obtain the target operating capacity of each opening outdoor unit distributed by opening outdoor unit;Based on the target operating capacity of opening outdoor unit distributed by opening outdoor unit and the rated capacity of each compressor in opening outdoor unit, allocate capacity for each compressor.The application can be applied to the outdoor unit including multiple compressors and the compressor specification is different, and the versatility is stronger, improves the rationality of multiple connected air conditioner capacity distribution, reduces the waste of electric energy.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a method for allocating compressor capacity in a multi-split air conditioner and a multi-split air conditioner. Background Technology

[0002] Multi-split air conditioners consist of one or more outdoor units connected in parallel, each containing a compressor. With continuous economic development, the application of multi-split air conditioners is increasing. During operation, the capacity of multiple outdoor units and compressors needs to be allocated to ensure the normal operation of the system. Existing multi-split air conditioner capacity allocation technologies are typically designed for outdoor units with two compressors of identical specifications and capacity. They cannot allocate capacity to compressors of different capacities or specifications, resulting in poor versatility. Furthermore, current multi-split air conditioner capacity allocation technologies usually distribute the capacity of each outdoor unit and compressor evenly, which can easily lead to energy waste when the indoor units require less capacity. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides a compressor capacity allocation method for multi-split air conditioners and a multi-split air conditioner itself. This method is applicable to outdoor units with multiple compressors of different specifications, exhibiting strong versatility, improving the rationality of capacity allocation in multi-split air conditioners, and reducing energy waste.

[0004] According to an embodiment of the present invention, a compressor capacity allocation method for a multi-split air conditioner is provided, applied to a multi-split air conditioner, wherein the multi-split air conditioner includes one or more outdoor units, each outdoor unit includes one or more compressors, and the rated capacities of each compressor are the same or different. The compressor capacity allocation method for the multi-split air conditioner includes: when the indoor units are running and the multi-split air conditioner includes multiple outdoor units, obtaining the total demand capacity of the indoor units; determining the number of outdoor units to be activated based on the total demand capacity and the rated capacity of each outdoor unit; allocating capacity to each activated outdoor unit according to a Levy distribution method based on the total demand capacity and the number of activated outdoor units to obtain the target operating capacity allocated to each activated outdoor unit; and allocating the capacity of each compressor based on the target operating capacity allocated to the activated outdoor units and the rated capacity of each compressor in the activated outdoor units.

[0005] By adopting the above technical solution, some outdoor units can be selectively activated based on the total demand capacity of the indoor units and the rated capacity of each outdoor unit. The total demand capacity of the indoor units can be reasonably allocated to each outdoor unit, thereby allocating capacity to the compressors in each activated outdoor unit. This method is applicable to outdoor units with multiple compressors of different specifications, has strong versatility, improves the rationality of capacity allocation in multi-split air conditioning, and reduces energy waste.

[0006] Preferably, the step of allocating capacity to each outdoor unit according to the Levy distribution method based on the total demand capacity and the number of outdoor units in operation to obtain the target operating capacity allocated to each outdoor unit includes: calculating the Levy distribution step size corresponding to each outdoor unit; calculating the operating capacity of each outdoor unit based on the rated capacity of each outdoor unit and the total demand capacity, denoted as the first operating capacity; and calculating the target operating capacity of each outdoor unit corresponding to the first operating capacity of each outdoor unit under the Levy distribution step size distribution.

[0007] By adopting the above technical solution, the first operating capacity of each outdoor unit is calculated on an average basis according to its rated capacity, and the target operating capacity of each outdoor unit is calculated under the Levy distribution step size distribution. On the basis of ensuring the normal operation of the outdoor units, the rationality of the capacity allocation of each outdoor unit is improved and the energy waste of the outdoor units is reduced.

[0008] Preferably, the formula for calculating the Lévy distribution step size is: Where γ is the step size of the Lévy distribution, μ follows a normal distribution, v follows a standard normal distribution, and β is a constant.

[0009] Preferably, the formula for calculating the target operating capacity of the outdoor unit is: C i =r i ·c i Among them, C i For the target operating capacity of the i-th outdoor unit to be turned on, r i Let c be the Levy distribution step size for the i-th outdoor unit that is turned on. i The first operating capacity is the average of the rated capacity allocated to the i-th outdoor unit when it is turned on.

[0010] Preferably, the formula for calculating the first operating capability is: Among them, c i Let Q be the first operating capacity evenly allocated to the i-th outdoor unit according to its rated capacity, and let c be the total demand capacity of the indoor units. ir Let be the rated capacity of the i-th outdoor unit, and n be the total number of outdoor units currently in operation.

[0011] Preferably, the step of allocating capacity to each compressor based on the target operating capacity allocated to the outdoor unit and the rated capacity of each compressor in the outdoor unit includes: determining the minimum number of compressors to be turned on in the outdoor unit and the corresponding target compressors to be turned on based on the target operating capacity; and determining the capacity allocation value of the target compressor based on the target operating capacity of the outdoor unit and the rated capacity of the target compressor.

[0012] By adopting the above technical solution, the target operating capacity allocated to the outdoor unit is distributed to the minimum number of compressors. While ensuring that the operating capacity is met, the number of compressors in operation is reduced, thereby reducing the power consumption of the outdoor unit. By allocating capacity according to the rated capacity of the target compressors to be turned on as needed, it can be applied to the capacity allocation of outdoor units with different compressor specifications, thus improving the applicability of outdoor unit capacity allocation.

[0013] Preferably, the step of determining the minimum number of compressors to be turned on in the outdoor unit and the corresponding target compressors to be turned on based on the target operating capacity includes: obtaining the rated capacity of each compressor in the outdoor unit and sorting the rated capacity of each compressor from largest to smallest; starting from the maximum rated capacity, sequentially selecting a preset number of target compressors until the sum of the rated capacities of each target compressor is greater than the target operating capacity, thereby obtaining the minimum number of compressors to be turned on and the corresponding target compressors to be turned on.

[0014] By adopting the above technical solution, the target compressor to be started can be selected from the compressor with the largest rated capacity, which can minimize the number of compressors in operation. This ensures that the multi-split air conditioner meets the user's needs while reducing the energy consumption of the multi-split air conditioner and improving the user experience.

[0015] Preferably, the formula for calculating the capacity allocation value of the target compressor is: Among them, R j C is the capacity allocation value for the j-th target compressor in the i-th outdoor unit that is activated. i For the target operating capacity of the i-th outdoor unit, T j T is the rated capacity of the j-th target compressor in the i-th outdoor unit that is turned on. all This is the sum of the rated capacities of all target compressors in the i-th outdoor unit that is in operation.

[0016] Preferably, the compressor capacity allocation method further includes: when the indoor unit is turned on and the multi-split air conditioner includes one outdoor unit, obtaining the total demand capacity of the indoor unit, determining the minimum number of compressors to be turned on in the outdoor unit and the corresponding target compressors to be turned on based on the total demand capacity, and allocating capacity to each target compressor based on the total demand capacity and the rated capacity of the target compressors.

[0017] By adopting the above technical solution, when a multi-split air conditioner includes only one outdoor unit, the total demand capacity of the indoor unit is allocated to the minimum number of compressors. This solution is applicable to multi-split air conditioners where a single outdoor unit includes any number and specifications of compressors, thereby reducing the operating cost of multi-split air conditioners.

[0018] According to an embodiment of the present invention, another aspect provides a multi-split air conditioner, including a controller and one or more outdoor units, wherein the outdoor units include one or more compressors, each compressor having the same or different rated capacities, and the controller includes a computer-readable storage medium storing a computer program and a processor, wherein the computer program is read and executed by the processor to implement the method as described in any of the first aspects.

[0019] The present invention has the following beneficial effects: by selectively activating some outdoor units according to the total demand capacity of the indoor units and the rated capacity of each outdoor unit, and rationally allocating the total demand capacity of the indoor units to each outdoor unit, thereby allocating capacity to the compressors in each activated outdoor unit, it can be applied to outdoor units with multiple compressors and different compressor specifications, has strong versatility, improves the rationality of capacity allocation of multi-split air conditioners, and reduces energy waste. Attached Figure Description

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in 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 merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0022] Figure 1 A flowchart of a compressor capacity allocation method for a multi-split air conditioner provided by the present invention;

[0023] Figure 2 This invention provides a flowchart for capacity allocation among multiple compressors in a multi-split air conditioner. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] This embodiment provides a compressor capacity allocation method for a multi-split air conditioner. This method can be applied to multi-split air conditioners, which include one or more outdoor units, each containing one or more compressors. The rated capacities of the compressors may be the same or different. See example... Figure 1 The flowchart shown is a method for allocating compressor capacity in a multi-split air conditioner. This method mainly includes the following steps S102 to S106:

[0027] Step S102: When the indoor unit is turned on and the multi-split air conditioner includes multiple outdoor units, obtain the total demand capacity of the indoor units, and determine the number of outdoor units to be turned on based on the total demand capacity and the rated capacity of each outdoor unit.

[0028] After the indoor unit of a multi-split air conditioner is turned on, it is determined whether the multi-split air conditioner includes multiple outdoor units. If so, the total demand capacity of each indoor unit is obtained. Based on the total demand capacity required by the outdoor units and the rated capacity of each outdoor unit, the number of outdoor units that need to be turned on is determined, so that the total rated capacity of the outdoor units can be greater than the total demand capacity of the indoor units, in order to meet the cooling or heating needs of the indoor units.

[0029] In one specific implementation, the total rated capacity of the outdoor units multiplied by 95% must be greater than the total required capacity of the indoor units to ensure that the outdoor units can meet the capacity requirements of the indoor units while maintaining normal capacity output. The outdoor units to be activated can be determined according to their address numbers. For example, if the rated capacity of outdoor unit 1 is less than the total required capacity of the indoor units, it is determined whether the total rated capacity of indoor unit 1 and outdoor unit 2 multiplied by 95% is greater than the total required capacity of the indoor units. If yes, then the number of outdoor units to be activated is determined to be 2, namely indoor unit 1 and outdoor unit 2. If not, then it is determined whether the total rated capacity of indoor unit 1, outdoor unit 2, and outdoor unit 3 multiplied by 95% is greater than the total required capacity of the indoor units, until the determined total rated capacity of the activated outdoor units multiplied by 95% is greater than the total required capacity of the indoor units.

[0030] Step S104: Based on the total demand capacity and the number of outdoor units in operation, allocate capacity to each outdoor unit in operation according to the Levy distribution method to obtain the target operating capacity allocated to each outdoor unit in operation.

[0031] Based on the total demand capacity required by the indoor units, the capacity of each outdoor unit is allocated according to the Levy distribution method. The capacity allocated to each outdoor unit is recorded as the target operating capacity. Since the step size of the Levy distribution conforms to the characteristics of the heavy-tailed distribution, the capacity can be allocated according to the horsepower of the outdoor unit. That is, the larger the horsepower of the outdoor unit, the more capacity is allocated. This realizes the rational allocation of the total demand capacity of the indoor units to each outdoor unit, reducing power loss.

[0032] Step S106: Allocate capacity to each compressor based on the target operating capacity allocated to the outdoor unit and the rated capacity of each compressor in the outdoor unit.

[0033] For each outdoor unit that is turned on, capacity is allocated to one or more compressors based on their target operating capacity and the rated capacity of each compressor. The larger the rated capacity of the compressor, the more capacity it is allocated, and the sum of the allocated capacities of each compressor equals the target operating capacity of its corresponding outdoor unit. This compressor capacity allocation method is applicable not only to outdoor units with two or more compressors of the same specifications, but also to outdoor units with multiple compressors of different specifications, thereby reducing the operating costs of the air conditioner by adapting to the different usage needs of the indoor unit.

[0034] The compressor capacity allocation method for multi-split air conditioners provided in this embodiment selectively activates some outdoor units based on the total demand capacity of the indoor units and the rated capacity of each outdoor unit, and rationally allocates the total demand capacity of the indoor units to each outdoor unit, thereby allocating capacity to the compressors in each activated outdoor unit. This method is applicable to outdoor units with multiple compressors and different compressor specifications, has strong versatility, improves the rationality of capacity allocation in multi-split air conditioners, and reduces energy waste.

[0035] In one embodiment, this embodiment provides an implementation method for allocating capacity to each activated outdoor unit according to the Levy distribution method based on the total demand capacity and the number of activated outdoor units, to obtain the target operating capacity allocated to each activated outdoor unit. The specific steps are as follows:

[0036] Step (1): Calculate the Levy distribution step size corresponding to each outdoor unit that is turned on;

[0037] When calculating the capacity allocation of each active outdoor unit according to the Levy distribution method, the Levy distribution step size corresponding to each active outdoor unit is calculated.

[0038] In one specific implementation, the formula for calculating the Lévy distribution step size is:

[0039] Where γ is the Lévy distribution step size, μ follows a normal distribution, v follows a standard normal distribution, and β is a constant. μ~N(0,σ) 2v ~ N(0,1), standard deviation The parameter β can take the value 1.5.

[0040] Step (2): Obtain the rated capacity of each outdoor unit that can be turned on. Based on the rated capacity of each outdoor unit and the total demand capacity, calculate the operating capacity of each outdoor unit that can be turned on according to the rated capacity, and record it as the first operating capacity.

[0041] The total capacity required by the indoor units is allocated based on the rated capacity of the outdoor units. Outdoor units with larger rated capacities are allocated more operating capacity, while those with smaller rated capacities are allocated less operating capacity. The operating capacity that is evenly allocated to the outdoor units according to their rated capacities is recorded as the first operating capacity.

[0042] In one specific implementation, the formula for calculating the first operational capability is:

[0043] Among them, c i Let Q be the initial operating capacity of the i-th outdoor unit, evenly distributed according to its rated capacity, and let c be the total demand capacity of the indoor units. ir Let be the rated capacity of the i-th outdoor unit, and n be the total number of outdoor units currently in operation.

[0044] Step (3): Calculate the target operating capacity of each outdoor unit under the Lévy distribution step size distribution, corresponding to the first operating capacity of each outdoor unit.

[0045] By calculating the first operating capacity of each outdoor unit that is turned on, which is evenly distributed according to its rated capacity, and by calculating the target operating capacity of each outdoor unit under the Lévy distribution step size distribution, the rationality of the capacity allocation of each outdoor unit is improved and the energy waste of the outdoor unit is reduced while ensuring the normal operation of the outdoor unit.

[0046] In one specific implementation, the formula for calculating the target operating capacity of the outdoor unit is: C i =r i ·c i ;

[0047] Furthermore, the calculated target operating capacity of each activated outdoor unit must meet the following requirements:

[0048] Among them, C i For the target operating capacity of the i-th outdoor unit to be turned on, r i Let c be the Levy distribution step size for the i-th outdoor unit that is turned on. i The first operating capacity is the average of the rated capacity allocated to the i-th outdoor unit when it is turned on.

[0049] In one embodiment, this embodiment provides an implementation method based on the target operating capacity allocated to the outdoor unit and the rated capacity of each compressor in the outdoor unit as the allocated capacity for each compressor. The specific steps are as follows:

[0050] Step 1): Determine the minimum number of compressors to be activated in the outdoor unit and the corresponding target compressors to be activated based on the target operating capacity;

[0051] The selection of compressors to be turned on from the outdoor units is based on the minimum number of compressors that need to be turned on, and the sum of the rated capacities of the turned-on compressors is greater than the target operating capacity. In other words, the minimum number of compressors that need to be turned on is selected while ensuring that the outdoor units meet the allocated target operating capacity. This reduces the power consumption of the outdoor units and avoids energy waste.

[0052] In one specific implementation, the rated capacity of each compressor in the outdoor unit is obtained, and the rated capacity of each compressor is sorted from largest to smallest; starting from the largest rated capacity, a preset number of target compressors are selected sequentially until the sum of the rated capacities of all target compressors is greater than the target operating capacity, thereby obtaining the minimum number of compressors to be turned on and the corresponding target compressors to be turned on.

[0053] For example, suppose the rated capacity of each compressor is sorted from largest to smallest to obtain: compressor 1, compressor 2, ..., determine whether the rated capacity of compressor 1 is greater than the target operating capacity. If yes, the minimum number of compressors to be turned on is 1, and the target compressor to be turned on is compressor 1; if no, determine whether the sum of the rated capacities of compressor 1 and compressor 2 is greater than the target operating capacity. If yes, the minimum number of compressors to be turned on is 2, and the target compressors to be turned on are compressor 1 and compressor 2.

[0054] In one implementation, when the sum of the rated capacities of all target compressors * A is greater than the target operating capacity, the minimum number of compressors to be activated and the corresponding target compressors to be activated are obtained. The value of A ranges from 75% to 80%, with a preferred value of 78%. For example, it is determined whether the sum of the rated capacities of compressor 1 and compressor 2 * A is greater than the target operating capacity. If so, the minimum number of compressors to be activated is 2, and the target compressors to be activated are compressor 1 and compressor 2.

[0055] By selecting the target compressor to start from the compressor with the largest rated capacity, the number of compressors in operation can be minimized. This ensures that the multi-split air conditioner meets user needs while reducing energy consumption and improving the user experience.

[0056] Step 2): Determine the capacity allocation value of the target compressor based on the target operating capacity of the outdoor unit and the rated capacity of the target compressor.

[0057] The target operating capacity allocated to the outdoor unit is distributed to each target compressor that needs to be activated. The larger the rated capacity of the target compressor, the higher the corresponding capacity allocation value. By allocating the target operating capacity to the minimum number of compressors, the number of operating compressors is reduced while ensuring sufficient operating capacity, thus reducing the power consumption of the outdoor unit. By allocating capacity according to the rated capacity of the target compressors that need to be activated, it can be applied to outdoor unit capacity allocation for different compressor specifications, improving the applicability of outdoor unit capacity allocation.

[0058] In one specific implementation, the formula for calculating the capacity allocation value of the target compressor is:

[0059]

[0060] Among them, R j C is the capacity allocation value for the j-th target compressor in the i-th outdoor unit that is activated. i For the target operating capacity of the i-th outdoor unit, T j T is the rated capacity of the j-th target compressor in the i-th outdoor unit that is turned on. all This is the sum of the rated capacities of all target compressors in the i-th outdoor unit that is in operation.

[0061] In one embodiment, the method provided in this embodiment further includes: when the indoor unit is turned on and the multi-split air conditioner includes one outdoor unit, obtaining the total demand capacity of the indoor unit, determining the minimum number of compressors to be turned on in the outdoor unit and the corresponding target compressors to be turned on based on the total demand capacity, and allocating capacity to each target compressor based on the total demand capacity and the rated capacity of the target compressors.

[0062] When a multi-split air conditioner includes one outdoor unit, the total capacity demand of the indoor units is allocated to the compressors of that outdoor unit. The compressors in the outdoor unit are sorted by rated capacity from largest to smallest. Starting with the largest rated capacity, a preset number of target compressors are selected sequentially until the sum of the rated capacities of all target compressors exceeds the total capacity demand of the indoor units. This yields the minimum number of compressors that need to be activated and the corresponding target compressors. The larger the rated capacity of the target compressor, the greater the allocated capacity. The formula for calculating the capacity allocation value of the j-th target compressor can be: T all T is the sum of the rated capacities of all target compressors in the outdoor unit. j Let be the rated capacity of the j-th target compressor.

[0063] By allocating the total demand capacity of the indoor units to the minimum number of compressors when the multi-split air conditioner includes only one outdoor unit, it can be applied to multi-split air conditioners with any number and specifications of compressors in a single outdoor unit, thus reducing the operating cost of multi-split air conditioners.

[0064] The compressor capacity allocation method for multi-split air conditioners provided in this embodiment is applicable to scenarios where the compressor capacities are the same or different, and can reduce usage costs according to different needs. By allocating the operating capacity among outdoor units according to the Levy distribution step size, energy waste can be reduced. By using the rated capacity normalization method to allocate the operating capacity of the compressors in the outdoor units, it is not only applicable to cases with different compressor specifications, but also to cases with the same compressor specifications and cases with any number of compressors in a single outdoor unit.

[0065] Corresponding to the compressor capacity allocation method for multi-split air conditioners provided in the above embodiments, this invention provides an example of applying the above-described compressor capacity allocation method to allocate capacity among multiple compressors in a multi-split air conditioner, see example... Figure 2 The flowchart shown below illustrates the capacity allocation process for multiple compressors in a multi-split air conditioner. Please refer to the following steps for specific execution:

[0066] Step S201: When an indoor unit with demand is turned on, obtain the total demand capacity Q of the indoor units, and determine the number of outdoor units that need to be turned on based on the rated capacity of the outdoor units.

[0067] Step S202: Distribute the outdoor units that are turned on according to the number of outdoor units in operation using the Levy distribution method. The method for obtaining the step size of the Levy distribution is as follows:

[0068]

[0069] Where γ is the Lévy distribution step size, μ follows a normal distribution, v follows a standard normal distribution, and β is a constant. μ~N(0,σ) 2 v ~ N(0,1), standard deviation The parameter β is 1.5.

[0070] Step S203: Obtain the total demand capacity Q of the indoor unit and the step size of the Levy distribution, and calculate the target operating capacity allocated to each activated outdoor unit according to the Levy distribution method;

[0071] C i =r i ·c i Among them, C i For the target operating capacity of the i-th outdoor unit to be turned on, r i Let c be the Levy distribution step size for the i-th outdoor unit that is turned on. i The first operating capacity is the average of the rated capacity allocated to the i-th outdoor unit when it is turned on.

[0072] c i Let Q be the first operating capacity evenly allocated to the i-th outdoor unit according to its rated capacity, and let c be the total demand capacity of the indoor units. irLet be the rated capacity of the i-th outdoor unit, and n be the total number of outdoor units currently in operation.

[0073] The relationship between the total indoor unit capacity demand and the operating outdoor unit capacity, according to the Levy distribution method, is as follows:

[0074]

[0075] Step S204, based on the target operating capacity C allocated to the outdoor unit. i Calculate the distribution capacity R of the j-th compressor in each operating outdoor unit according to the rated normalization method. j The standardization method is as follows:

[0076] If the number of compressors that need to be turned on to start the outdoor unit is 1, then R j =C i *1;

[0077] If the number of compressors that need to be turned on to start the outdoor unit is j, then

[0078] Where T all To activate the sum of the rated capacities of all operating compressors inside the outdoor unit, T j Let be the rated capacity of the j-th compressor in a single module. To ensure the normal operation of all compressors, the sum of the rated capacities of the operating compressors must be greater than 78% of the target operating capacity C allocated to the outdoor unit. i .

[0079] Corresponding to the compressor capacity allocation method provided in the above embodiments, this embodiment provides a multi-split air conditioner, which includes a controller and one or more outdoor units. The outdoor units include one or more compressors, and the rated capacities of each compressor are the same or different. The controller includes a computer-readable storage medium storing a computer program and a processor. The computer program is read and run by the processor to implement the compressor capacity allocation method provided in the above embodiments.

[0080] This embodiment also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of the compressor capacity allocation method embodiment described above, achieving the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0081] Of course, those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by computer-controlled devices. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The storage medium can be a memory, a disk, an optical disk, etc.

[0082] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0083] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0084] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the multi-split air conditioner disclosed in the embodiments, since it corresponds to the compressor capacity allocation method of the multi-split air conditioner disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0085] The above description of the disclosed embodiments enables those skilled in the art to make or use the 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0086] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A method for allocating compressor capacity in a multi-split air conditioner, characterized in that, This method is applied to multi-split air conditioners, where each multi-split air conditioner includes multiple outdoor units, each outdoor unit includes multiple compressors, and the rated capacity of each compressor may be the same or different. The compressor capacity allocation method of the multi-split air conditioner includes: When the indoor unit is turned on, the total demand capacity of the indoor units is obtained, and the number of outdoor units to be turned on is determined based on the total demand capacity and the rated capacity of each outdoor unit. Based on the total demand capacity and the number of outdoor units that are turned on, the capacity of each outdoor unit that is turned on is allocated according to the Levy distribution method to obtain the target operating capacity allocated to each outdoor unit. The target operating capacity allocated to the outdoor unit and the rated capacity of each compressor in the outdoor unit are the allocated capacity of each compressor. The step of allocating capacity to each activated outdoor unit according to the Levy distribution method based on the total demand capacity and the number of activated outdoor units, to obtain the target operating capacity allocated to each activated outdoor unit, includes: Calculate the Levy distribution step size corresponding to each of the outdoor units that are turned on. The formula for calculating the Levy distribution step size is as follows: ;in, Let Lévy's distribution step size be denoted as Lévy. Follows a normal distribution. Follows a standard normal distribution. It is a constant; Based on the rated capacity of each of the aforementioned outdoor units and the total demand capacity, the operating capacity of each of the aforementioned outdoor units is calculated according to the average distribution of the rated capacity, and is denoted as the first operating capacity. Calculate the target operating capacity of each of the outdoor units that are turned on, corresponding to the first operating capacity of each outdoor unit under the Lévy distribution step size. The formula for calculating the target operating capacity of the outdoor unit is as follows: ; in, The target operating capacity for the i-th outdoor unit to be turned on. Let Lever distribution step size be the value of the i-th outdoor unit that is turned on. The first operating capacity is the average of the rated capacity allocated to the i-th outdoor unit when it is turned on.

2. The compressor capacity allocation method as described in claim 1, characterized in that, The formula for calculating the first operational capability is: ; in, The first operating capacity is the average of the rated capacity allocated to the i-th outdoor unit when it is turned on. This represents the total required capacity of the indoor units. The rated capacity of the i-th outdoor unit when it is turned on. This represents the total number of outdoor units currently in operation.

3. The compressor capacity allocation method as described in claim 1, characterized in that, The step of allocating the target operating capacity based on the activated outdoor unit and the rated capacity of each compressor in the activated outdoor unit as the allocated capacity for each compressor includes: Based on the target operating capacity, determine the minimum number of compressors to be activated in the outdoor unit and the corresponding target compressors to be activated; The capacity allocation value of the target compressor is determined based on the target operating capacity of the outdoor unit and the rated capacity of the target compressor.

4. The compressor capacity allocation method as described in claim 3, characterized in that, The step of determining the minimum number of compressors to be activated in the outdoor unit and the corresponding target compressors to be activated based on the target operating capacity includes: Obtain the rated capacity of each compressor in the outdoor unit that is turned on, and sort the rated capacity of each compressor from largest to smallest; Starting from the maximum rated capacity, a preset number of target compressors are selected sequentially until the sum of the rated capacities of all the target compressors exceeds the target operating capacity, thereby obtaining the minimum number of compressors to be turned on and the corresponding target compressors to be turned on.

5. The compressor capacity allocation method as described in claim 3, characterized in that, The formula for calculating the capacity allocation value of the target compressor is: ; in, Assign a capacity value to the j-th target compressor in the i-th outdoor unit that is activated. The target operating capacity for the i-th outdoor unit to be turned on. Let j be the rated capacity of the target compressor in the i-th outdoor unit that is turned on. This is the sum of the rated capacities of all target compressors in the i-th outdoor unit that is in operation.

6. A multi-split air conditioner, characterized in that, The device includes a controller and multiple outdoor units, each outdoor unit including multiple compressors, each compressor having the same or different rated capacities. The controller includes a computer-readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the method as described in any one of claims 1-5.

Images