Multi-split air conditioner regulation and control method and device, storage medium and multi-split air conditioner

Abstract

The invention discloses a multi-split air conditioner regulation and control method and device, a storage medium and a multi-split air conditioner, and relates to the technical field of air conditioners, the method comprises the steps that initial optimization parameter values of a thermal equivalent model of a building site are obtained, and the initial optimization parameter values are obtained by conducting parameter optimization on the thermal equivalent model based on full-open temperature control data; the full-open temperature control data refers to related temperature control data when a plurality of indoor units in the building site are started at the same time; if it is monitored that part of indoor units in the building site are started, indoor unit information of part of indoor units is obtained; the initial optimization parameter values are corrected according to the indoor unit information of part of the indoor units, and corrected optimization parameter values are obtained; and the corrected optimization parameter value is applied to a thermal equivalent model, an optimized thermal equivalent model is obtained, and the optimized thermal equivalent model is used for regulating and controlling the outdoor unit of the multi-split air conditioner. According to the method, the evaluation accuracy of the indoor unit capacity requirement in the multi-split air conditioner regulation and control process can be improved, and energy waste is reduced.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly relates to a multi-connected air conditioner control method, device, storage medium, and multi-connected air conditioner. Background Art

[0002] When a multi-connected air conditioner performs temperature control, it usually adopts some methods to evaluate the capacity requirements of indoor units and further adjust the capacity of the outdoor unit according to the capacity requirements of indoor units. In related technologies, a thermal equivalent model is used to evaluate the capacity requirements of indoor units. However, in related technologies, fixed parameters are usually adopted in the thermal equivalent model. In the face of different indoor unit control situations, the problem of inaccurate evaluation of the capacity requirements of indoor units will occur, resulting in energy waste. Summary of the Invention

[0003] An embodiment of this application provides a solution that can improve the accuracy of evaluating the capacity requirements of indoor units during the control process of multi-connected air conditioners and reduce energy waste.

[0004] The embodiments of this application provide the following technical solutions:

[0005] According to an embodiment of this application, a multi-connected air conditioner control method includes: obtaining an initial optimization parameter value of a thermal equivalent model of a building site, where the initial optimization parameter value is obtained by performing parameter optimization on the thermal equivalent model based on full-open temperature control data, and the full-open temperature control data refers to relevant temperature control data when multiple indoor units in the building site are turned on simultaneously; if it is monitored that some indoor units in the building site are turned on, obtaining the indoor unit information of the some indoor units; performing a correction process on the initial optimization parameter value according to the indoor unit information of the some indoor units to obtain a corrected optimization parameter value; applying the corrected optimization parameter value to the thermal equivalent model to obtain an optimized thermal equivalent model, so as to use the optimized thermal equivalent model to control the outdoor unit of the multi-connected air conditioner.

[0006] In some embodiments of this application, the performing a correction process on the initial optimization parameter value according to the indoor unit information of the some indoor units to obtain a corrected optimization parameter value includes: performing a correction process on the initial thermal resistance value in the initial optimization parameter value according to the number of turned-on indoor units of the some indoor units to obtain a corrected thermal resistance value; and / or, performing a correction process on the initial heat capacity value in the initial optimization parameter value according to the rated capacity of the turned-on indoor units of the some indoor units to obtain a corrected heat capacity value.

[0007] In some embodiments of the present application, the method for correcting the initial thermal resistance value in the initial optimization parameter value according to the number of powered-on indoor units of the partial indoor units to obtain the corrected thermal resistance value includes: obtaining a convective heat transfer correction coefficient; calculating the ratio of the number of powered-on indoor units to the total number of indoor units in the building site to obtain the powered-on indoor unit ratio; and correcting the initial thermal resistance value in the initial optimization parameter value according to the convective heat transfer correction coefficient and the powered-on indoor unit ratio to obtain the corrected thermal resistance value.

[0008] In some embodiments of the present application, the method for correcting the initial thermal resistance value in the initial optimization parameter value according to the convective heat transfer correction coefficient and the powered-on indoor unit ratio to obtain the corrected thermal resistance value includes: correcting and calculating according to the formula R i (t) = R i *(1 + α*p), where R i refers to the initial thermal resistance value, R i (t) refers to the corrected thermal resistance value, α refers to the convective heat transfer correction coefficient, and p refers to the powered-on indoor unit ratio.

[0009] In some embodiments of the present application, the method for correcting the initial heat capacity value in the initial optimization parameter value according to the rated capacity of the powered-on indoor units of the partial indoor units to obtain the corrected heat capacity value includes: obtaining a heat capacity attenuation coefficient; calculating the ratio of the rated capacity of the powered-on indoor units to the total rated capacity of the indoor units in the building site to obtain the rated capacity ratio; and correcting the initial heat capacity value in the initial optimization parameter value according to the heat capacity attenuation coefficient and the rated capacity ratio to obtain the corrected heat capacity value.

[0010] In some embodiments of the present application, the method for correcting the initial heat capacity value in the initial optimization parameter value according to the heat capacity attenuation coefficient and the rated capacity ratio to obtain the corrected heat capacity value includes: correcting and calculating according to the formula C j (t) = C j *(1 - β*q), where C j refers to the initial heat capacity value, C j (t) refers to the corrected heat capacity value, β refers to the heat capacity attenuation coefficient, and q refers to the rated capacity ratio.

[0011] In some embodiments of the present application, the thermal equivalent model is a 4R3C model, where the initial thermal resistance value refers to the thermal resistance value of the heat transfer between the wall and the indoor convection, and the initial heat capacity value refers to the heat capacity value of the air heat capacity.

[0012] According to an embodiment of the present application, a multi-connected air conditioner control device, the device includes: a memory storing a computer program; a processor reading the computer program stored in the memory to execute the method described in any embodiment of the present application.

[0013] According to another embodiment of the present application, a storage medium stores a computer program thereon. When the computer program is executed by a processor of a multi-connected air conditioner control device, the multi-connected air conditioner control device is caused to execute the method described in the embodiment of the present application.

[0014] According to another embodiment of the present application, an air conditioner may include the multi-connected air conditioner control device described in the embodiment of the present application and other air conditioner modules.

[0015] According to another embodiment of the present application, a computer program product or a computer program, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of a multi-connected air conditioner control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the multi-connected air conditioner control device executes the methods provided in various alternative implementations described in the embodiments of the present application.

[0016] In the embodiment of the present application, an initial optimization parameter value of a thermal equivalent model of a building site is obtained. The initial optimization parameter value is obtained by performing parameter optimization on the thermal equivalent model based on full-open temperature control data. The full-open temperature control data refers to relevant temperature control data when multiple indoor units in the building site are turned on simultaneously; if it is monitored that some indoor units in the building site are turned on, the indoor unit information of the some indoor units is obtained; the initial optimization parameter value is corrected according to the indoor unit information of the some indoor units to obtain a corrected optimization parameter value; the corrected optimization parameter value is applied to the thermal equivalent model to obtain an optimized thermal equivalent model, so as to use the optimized thermal equivalent model to control the outdoor unit of the multi-connected air conditioner.

[0017] In this way of the embodiment of the present application, first, parameter optimization is performed on the thermal equivalent model of the building site based on full-open temperature control data through a genetic algorithm. For the obtained initial optimization parameter value, further correction is performed according to the indoor unit information of the turned-on part of the indoor units. The corrected optimization parameter value obtained by correction is then applied to the thermal equivalent model to obtain an optimized thermal equivalent model. Using this optimized thermal equivalent model to control the outdoor unit of the multi-connected air conditioner can better conform to the situation of the turned-on indoor units, improve the evaluation accuracy of the indoor unit capacity requirements during the control process of the multi-connected air conditioner, and reduce energy waste. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 The flowchart of the multi-connected air conditioner control method according to an embodiment of the present application is shown.

[0020] Figure 2 The schematic layout diagram of the multi-connected air conditioner according to an embodiment of the present application is shown.

[0021] Figure 3 The schematic diagram of the thermal equivalent model according to an embodiment of the present application is shown.

[0022] Figure 4 The block diagram of the multi-connected air conditioner control device according to an embodiment of the present application is shown.

[0023] Figure 5 The block diagram of the multi-connected air conditioner according to an embodiment of the present application is shown. Detailed implementation manners

[0024] The following further details the present disclosure in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and are not used to limit the present disclosure. Additionally, the embodiments provided below are partial embodiments for implementing the present disclosure, rather than all embodiments for implementing the present disclosure. Without conflict, the technical solutions recorded in the embodiments of the present disclosure can be implemented in any combined manner.

[0025] It should be noted that in the embodiments of the present disclosure, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a method or device including a series of elements not only includes the elements clearly recited, but also includes other elements not explicitly listed, or elements inherent to the implementation of the method or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional related elements in the method or device including the element (such as steps in the method or units in the device, for example, the unit can be part of a circuit, part of a processor, part of a program or software, etc.).

[0026] For example, the multi-connected air conditioner control method provided by the embodiments of the present disclosure includes a series of steps. However, the multi-connected air conditioner control method provided by the embodiments of the present disclosure is not limited to the recorded steps. Similarly, the multi-connected air conditioner control device provided by the embodiments of the present disclosure includes a series of units. However, the device provided by the embodiments of the present disclosure is not limited to including the explicitly recorded units, and may also include units required for obtaining relevant information or processing based on information.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this disclosure.

[0028] It can be understood that in the specific implementation of this application, when it comes to relevant data, when the embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use, and processing of relevant data need to comply with relevant laws, regulations, and standards of relevant countries and regions.

[0029] Figure 1 The flowchart of the multi-connected air conditioner control method according to an embodiment of the present application is schematically shown. The execution subject of the multi-connected air conditioner control method can be any multi-connected air conditioner control device with processing capabilities. The multi-connected air conditioner control device can be set in a device, such as the multi-connected air conditioner itself, a mobile phone, a computer, a smart watch, and other household appliances.

[0030] In a specific embodiment of the present application, the multi-connected air conditioner control device, as the execution subject of the air conditioner control method, is set in a multi-connected air conditioner (which can also be called a multi-split air conditioner, etc.). The multi-connected air conditioner control device can specifically be a controller in the multi-connected air conditioner. Refer to Figure 2 , the multi-connected air conditioner may include an outdoor unit 210 (i.e., the outdoor machine) and a plurality of indoor units 220. Among them, one or several indoor units 220 can be placed in each indoor room (such as room 1 to room n).

[0031] As Figure 1 shown, the multi-connected air conditioner control method may include steps S110 to S140.

[0032] Step S110, obtaining an initial optimization parameter value of the thermal equivalent model of the building site, where the initial optimization parameter value is obtained by parameter optimization of the thermal equivalent model based on full-open temperature control data, and the full-open temperature control data refers to the relevant temperature control data when multiple indoor units in the building site are turned on simultaneously;

[0033] Step S120: If it is detected that some of the indoor units in the building site are powered on, obtain the indoor unit information of the said some indoor units;

[0034] Step S130: Modify the initial optimized parameter values according to the indoor unit information of the said some indoor units to obtain the modified optimized parameter values;

[0035] Step S140: Apply the modified optimized parameter values to the thermal equivalent model to obtain an optimized thermal equivalent model, so as to use the optimized thermal equivalent model to control the outdoor unit of the multi-split air conditioner.

[0036] The multi-split air conditioner may include one outdoor unit and multiple indoor units. The building site may include one or more rooms, and one or more indoor units may be installed in each room. When the temperature of the building site is controlled by the multi-split air conditioner in a historical time period, the full-open temperature control data of the multi-split air conditioner in the historical time period may be recorded. The full-open temperature control data refers to the relevant temperature control data when multiple indoor units in the building site are powered on simultaneously. Specifically, the full-open temperature control data may include the historical indoor and outdoor environmental temperatures and the historical unit cooling capacity of the multi-split air conditioner in the historical time period.

[0037] Construct a thermal equivalent model for the whole building site. The thermal equivalent model is also the RC model. The thermal equivalent model is a model used to describe the thermal dynamic characteristics of the building site. The thermal equivalent model includes parameters such as thermal resistance (R), heat capacity (C), cooling capacity, and environmental temperature. Among them, the thermal energy stored in the room of the building site is represented by the heat capacity (C), and the magnitude of the room's resistance to heat transfer is represented by the thermal resistance (R). Among them, the thermal equivalent model may be an optional model such as a 4R3C model or a 3R2C model.

[0038] Perform parameter optimization on the thermal equivalent model based on the full-open temperature control data of the building site in the historical time period through the genetic algorithm. Specifically, use the historical indoor and outdoor environmental temperatures as the environmental temperature in the thermal equivalent model. Then, perform parameter optimization on the thermal equivalent model through the genetic algorithm. The optimization goal is to minimize the difference (such as the root mean square error and other differences reflecting the difference between the two) between the estimated value of the cooling capacity and the historical unit cooling capacity, so as to obtain the initial optimized parameter values that meet this optimization goal. The initial optimized parameter values may include the initial thermal resistance value of the thermal resistance (R), the initial heat capacity value of the heat capacity (C), and other initial parameter values.

[0039] Further, in the embodiment of the present application, the startup situation of the indoor units in the building site is monitored. If it is detected that some of the indoor units in the building site are started up, the indoor unit information of this part of the indoor units is obtained. The indoor unit information may include, but is not limited to, one or more of the number of started-up indoor units (i.e., the total number of started-up indoor units) and the rated capacity of the started-up indoor units (i.e., the sum of the rated capacities of the started-up indoor units) of this part of the indoor units.

[0040] Further, the initial optimized parameter value is corrected according to the indoor unit information of this part of the indoor units to obtain a corrected optimized parameter value, and the corrected optimized parameter value is applied to the thermal equivalent model to obtain an optimized thermal equivalent model. When using this optimized thermal equivalent model to control the outdoor unit of the multi-connected air conditioner, the real-time indoor and outdoor environmental temperatures of the building site at each control time point are input into the optimized thermal equivalent model, and the evaluation value of the cooling capacity at each control time point can be obtained in real time. This evaluation value is the evaluation value of the indoor unit capacity demand (i.e., the evaluation value of the real-time building load). According to this evaluation value, the capacity output of the outdoor unit of the multi-connected air conditioner can be reliably controlled (for example, controlling the compressor frequency of the outdoor unit to match this evaluation value).

[0041] Since the initial optimized parameter value is corrected according to the startup situation of the indoor units to obtain a corrected optimized parameter value, and this optimized thermal equivalent model evaluates the cooling capacity (i.e., the indoor unit capacity demand) based on the corrected optimized parameter value, the evaluation value of the cooling capacity obtained is more in line with the startup situation of the indoor units, so that the evaluation of the cooling capacity (i.e., the indoor unit capacity demand) is more accurate. Therefore, the accuracy of the evaluation of the indoor unit capacity demand during the control process of the multi-connected air conditioner is improved, and energy waste is reduced.

[0042] In summary, in the way of the embodiment of the present application, first, the parameters of the thermal equivalent model of the building site are optimized by the genetic algorithm based on the fully open temperature control data. For the obtained initial optimized parameter value, further correction is performed according to the indoor unit information of the started-up part of the indoor units. The corrected optimized parameter value obtained by the correction is then applied to the thermal equivalent model to obtain an optimized thermal equivalent model. Using this optimized thermal equivalent model to control the outdoor unit of the multi-connected air conditioner can be more in line with the startup situation of the indoor units, improve the accuracy of the evaluation of the indoor unit capacity demand during the control process of the multi-connected air conditioner, and reduce energy waste.

[0043] The following description Figure 1 Specific optional embodiments for each step further when performing the control of the multi-connected air conditioner in the embodiment.

[0044] In one embodiment, the correcting the initial optimized parameter value according to the indoor unit information of the part of the indoor units to obtain a corrected optimized parameter value includes:

[0045] Modify the initial thermal resistance value in the initial optimization parameter value according to the number of indoor units that are powered on in the partial indoor units, to obtain a modified thermal resistance value;

[0046] And / or, modify the initial heat capacity value in the initial optimization parameter value according to the rated capacity of the indoor units that are powered on in the partial indoor units, to obtain a modified heat capacity value.

[0047] The number of indoor units that are powered on in the partial indoor units (i.e., the total number of indoor units that are powered on), and the rated capacity of the indoor units that are powered on in the partial indoor units (i.e., the sum of the rated capacities of the indoor units that are powered on). The initial optimization parameter value may include an initial thermal resistance value, an initial heat capacity value, and other initial parameter values.

[0048] According to the number of indoor units that are powered on in the partial indoor units, the initial thermal resistance value in the initial optimization parameter value can be accurately modified to obtain a modified thermal resistance value, so that the modified optimization parameter value includes the modified thermal resistance value.

[0049] According to the rated capacity of the indoor units that are powered on in the partial indoor units, the initial heat capacity value in the initial optimization parameter value can be accurately modified to obtain a modified heat capacity value, so that the modified optimization parameter value includes the modified heat capacity value.

[0050] Among them, in some ways, only the initial thermal resistance value is modified to obtain a modified thermal resistance value; in some ways, only the initial heat capacity value is modified to obtain a modified heat capacity value; in some ways, the initial thermal resistance value is modified to obtain a modified thermal resistance value, and the initial heat capacity value is modified to obtain a modified heat capacity value.

[0051] In one embodiment, the modifying the initial thermal resistance value in the initial optimization parameter value according to the number of indoor units that are powered on in the partial indoor units to obtain a modified thermal resistance value may include:

[0052] Obtain a convective heat transfer correction coefficient; calculate the ratio of the number of indoor units that are powered on to the total number of indoor units in the building site to obtain a ratio of powered-on indoor units; according to the convective heat transfer correction coefficient and the ratio of powered-on indoor units, modify the initial thermal resistance value in the initial optimization parameter value to obtain a modified thermal resistance value.

[0053] The convective heat transfer correction coefficient is a predetermined coefficient for correcting the convective heat transfer in the indoor area of the building site. Calculate the number of indoor units that are powered on N active And the total number of indoor units N total In the building site to obtain a ratio of powered-on indoor units p = N active / N totalAccording to the convective heat transfer correction coefficient and the proportion of the indoor unit at startup, the initial thermal resistance value in the initial optimized parameter values can be further corrected more accurately, further improving the accuracy of the corrected thermal resistance value.

[0054] Further, in a specific embodiment, the correcting the initial thermal resistance value in the initial optimized parameter values according to the convective heat transfer correction coefficient and the proportion of the indoor unit at startup to obtain a corrected thermal resistance value may include: calculating according to the formula R i (t) = R i *(1 + α*p), where R i refers to the initial thermal resistance value, R i (t) refers to the corrected thermal resistance value, α refers to the convective heat transfer correction coefficient, and p refers to the proportion of the indoor unit at startup. The applicant has found that calculating according to the formula R i (t) = R i *(1 + α*p) can further achieve extremely accurate correction of the initial thermal resistance value, where p = N active / N total .

[0055] In one embodiment, the correcting the initial heat capacity value in the initial optimized parameter values according to the rated capacity of the startup indoor units of the partial indoor units to obtain a corrected heat capacity value may include:

[0056] Obtaining a heat capacity attenuation coefficient; calculating the ratio of the rated capacity of the startup indoor units to the total rated capacity of the multiple indoor units in the building site to obtain a rated capacity ratio; and correcting the initial heat capacity value in the initial optimized parameter values according to the heat capacity attenuation coefficient and the rated capacity ratio to obtain a corrected heat capacity value.

[0057] The heat capacity attenuation coefficient is a predetermined coefficient for attenuating the contribution degree of the heat capacity. Calculating the ratio of the rated capacity ΣQa of the startup indoor units to the total rated capacity ΣQr of the multiple indoor units in the building site can obtain a rated capacity ratio q = ΣQa / ΣQr. According to the heat capacity attenuation coefficient and the rated capacity ratio, the initial heat capacity value in the initial optimized parameter values can be further corrected more accurately, further improving the accuracy of the corrected heat capacity value.

[0058] Further, in a specific embodiment, the correcting the initial heat capacity value in the initial optimized parameter values according to the heat capacity attenuation coefficient and the rated capacity ratio to obtain a corrected heat capacity value includes: calculating according to the formula C j (t) = C j *(1 - β*q), where C j refers to the initial heat capacity value, Cj (t) represents the corrected heat capacity value, β represents the heat capacity attenuation coefficient, and q represents the rated capacity ratio. The applicant found that, according to the formula C j (t) = C j * (1 - β * q) for correction calculation, the initial heat capacity value can be further corrected extremely accurately, where q = ΣQa / ΣQr.

[0059] Furthermore, in an embodiment of the present application, the aforementioned thermal equivalent model specifically adopts a 4R3C model. The applicant found that adopting the 4R3C model can extremely reliably improve the temperature control stability of the multi-split air conditioner and reduce the energy consumption of the multi-split air conditioner system. Refer to Figure 3 , in the 4R3C model, the 4R are respectively "R win , R1, R2 and R3", and the 3C in the model are respectively Cw1, Cw2 and C a . Among them, R3 refers to "the thermal resistance of the convective heat transfer between the wall and the indoor air", R win refers to "the window thermal resistance", R1 refers to "the thermal resistance of the convective heat transfer between the outer surface of the wall and the outdoor air", and R2 refers to "the self-thermal resistance of the wall". C a refers to "the air heat capacity", and Cw1 and Cw2 respectively refer to the first wall heat capacity and the second wall heat capacity.

[0060] Furthermore, in a specific embodiment, the aforementioned initial thermal resistance value to be corrected in the previous embodiment specifically refers to the thermal resistance value of "the thermal resistance of the convective heat transfer between the wall and the indoor air", and the aforementioned initial heat capacity value to be corrected in the previous embodiment specifically refers to the heat capacity value of the air heat capacity (which can also be called the indoor heat capacity). At this time, in this embodiment, if the correction calculation is performed according to the formula R i (t) = R i * (1 + α * p), then R i = R3, and R i (t) = R3(t). Furthermore, in this embodiment, if the correction calculation is performed according to the formula C j (t) = C j * (1 - β * q), then C j = C a , and C j (t) = C a (t).

[0061] Optionally, in other embodiments, the aforementioned initial thermal resistance value to be corrected in the previous embodiment may also include the thermal resistance values of R win , R1, and R2; the aforementioned initial heat capacity value to be corrected in the previous embodiment may also include the heat capacity values of Cw1 and Cw2.

[0062] Furthermore, as shown in combination with Figure 3 , for the 4R3C model, it can be specifically shown by the following formula:

[0063]

[0064] Cw1 is the heat capacity of the first wall, Cw2 is the heat capacity of the second wall, m w is the wall mass, Cw1m w is the total heat capacity of the first wall, Cw2m w is the total heat capacity of the second wall, A w refers to the wall area, T in (t) is the indoor air temperature at time t (such as the historical indoor environment temperature at a historical moment or the real-time indoor environment temperature at a real-time moment), T out (t) is the outdoor temperature at time t (such as the historical outdoor environment temperature at a historical moment or the real-time outdoor environment temperature at a real-time moment), and T1, T2 are virtual node temperatures.

[0065] C a is the air heat capacity, m a is the air mass, C a m a is the total air heat capacity, R win is the window thermal resistance, A win is the window area, R win / A win is the thermal resistance per unit area of the window, Q is the heating and cooling capacity (such as the evaluation value of the cooling capacity), Q inf is the cooling capacity caused by infiltration, Q solar is the solar radiation heat acting on the indoor air, Q in is the internal heat gain of the building acting on the indoor air. Among them, in the 4R3C model, except for T in (t), T out (t) and Q, all other parameters need to obtain corresponding initial optimized parameter values through parameter optimization.

[0066] In addition, the embodiment of the present application also provides a multi-connected air conditioner control device, and the multi-connected air conditioner control device can be applied to equipment. As Figure 4 shown, Figure 4 shows a multi-connected air conditioner control device according to an embodiment of the present application. Specifically: the multi-connected air conditioner control device 400 may include a processor 401 with one or more processing cores and a memory 402 with one or more computer-readable storage media.

[0067] The processor 401 can load the executable files corresponding to the processes of one or more computer programs into the memory 402 according to instructions, and the processor 401 runs the computer programs stored in the memory 402 to implement various functions in the embodiments of the multi-connected air conditioner control method described above.

[0068] For example, the processor 401 may execute the following steps:

[0069] Obtain the initial optimized parameter values of the thermal equivalent model of the building site, where the initial optimized parameter values are obtained by optimizing the parameters of the thermal equivalent model based on the full-open temperature control data, and the full-open temperature control data refers to the relevant temperature control data when multiple indoor units in the building site are turned on simultaneously; if it is detected that some indoor units in the building site are turned on, obtain the indoor unit information of the some indoor units; correct the initial optimized parameter values according to the indoor unit information of the some indoor units to obtain the corrected optimized parameter values; apply the corrected optimized parameter values to the thermal equivalent model to obtain an optimized thermal equivalent model, so as to use the optimized thermal equivalent model to control the outdoor unit of the multi-connected air conditioner.

[0070] In some embodiments of the present application, the correcting the initial optimized parameter values according to the indoor unit information of the some indoor units to obtain the corrected optimized parameter values includes: correcting the initial thermal resistance value in the initial optimized parameter values according to the number of turned-on indoor units of the some indoor units to obtain the corrected thermal resistance value; and / or, correcting the initial heat capacity value in the initial optimized parameter values according to the rated capacity of the turned-on indoor units of the some indoor units to obtain the corrected heat capacity value.

[0071] In some embodiments of the present application, the correcting the initial thermal resistance value in the initial optimized parameter values according to the number of turned-on indoor units of the some indoor units to obtain the corrected thermal resistance value includes: obtaining a convective heat transfer correction coefficient; calculating the ratio of the number of turned-on indoor units to the total number of indoor units in the building site to obtain the turned-on indoor unit ratio; correcting the initial thermal resistance value in the initial optimized parameter values according to the convective heat transfer correction coefficient and the turned-on indoor unit ratio to obtain the corrected thermal resistance value.

[0072] In some embodiments of the present application, the correcting the initial thermal resistance value in the initial optimized parameter values according to the convective heat transfer correction coefficient and the turned-on indoor unit ratio to obtain the corrected thermal resistance value includes: performing a correction calculation according to the formula R i (t) = R i * (1 + α * p), where R i refers to the initial thermal resistance value, R i (t) refers to the corrected thermal resistance value, α refers to the convective heat transfer correction coefficient, and p refers to the turned-on indoor unit ratio.

[0073] In some embodiments of the present application, the method of correcting the initial heat capacity value in the initial optimization parameter value according to the rated capacity of the indoor unit when it is powered on to obtain the corrected heat capacity value includes: obtaining a heat capacity attenuation coefficient; calculating the ratio of the rated capacity of the indoor unit when it is powered on to the total rated capacity of the multiple indoor units in the building site to obtain a rated capacity ratio; and correcting the initial heat capacity value in the initial optimization parameter value according to the heat capacity attenuation coefficient and the rated capacity ratio to obtain the corrected heat capacity value.

[0074] In some embodiments of the present application, the method of correcting the initial heat capacity value in the initial optimization parameter value according to the heat capacity attenuation coefficient and the rated capacity ratio to obtain the corrected heat capacity value includes: calculating according to the formula C j (t) = C j *(1 - β*q), where C j refers to the initial heat capacity value, C j (t) refers to the corrected heat capacity value, β refers to the heat capacity attenuation coefficient, and q refers to the rated capacity ratio.

[0075] In some embodiments of the present application, the thermal equivalent model is a 4R3C model, where the initial thermal resistance value refers to the thermal resistance value of the heat transfer between the wall and the indoor convection, and the initial heat capacity value refers to the heat capacity value of the air heat capacity.

[0076] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by a computer program or by controlling related hardware through a computer program. The computer program can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0077] Therefore, an embodiment of the present application further provides a storage medium, in which a computer program is stored, and the computer program can be loaded by a processor to execute the steps in any method provided by the embodiments of the present application.

[0078] Among them, the storage medium can be a computer-readable storage medium, and the storage medium can include: a read-only memory (ROM, Read Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disc, etc.

[0079] Since the computer program stored in the storage medium can execute the steps in any method provided by the embodiments of the present application, the beneficial effects that can be achieved by the methods provided by the embodiments of the present application can be realized. For details, see the previous embodiments and will not be repeated here.

[0080] In addition, refer toFigure 5 , the embodiment of the present application further provides a multi-connected air conditioner. The multi-connected air conditioner 500 may include the multi-connected air conditioner control device 400 as shown in Figure 4 and other air conditioner modules 600 (such as indoor units and outdoor units, etc.).

[0081] According to another embodiment of the present application, a computer program product or a computer program, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the multi-connected air conditioner control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the multi-connected air conditioner control device executes the methods provided in the various optional implementation manners described in the embodiments of the present application.

[0082] After considering the specification and practicing the disclosed embodiments herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application.

[0083] It should be understood that the present application is not limited to the embodiments described above and shown in the drawings, but various modifications and changes can be made without departing from its scope.

Claims

1. A multi-split air conditioner control method, characterized in that: include: Acquire initial optimization parameter values ​​of a thermal equivalent model of a building site, wherein the initial optimization parameter values ​​are obtained by optimizing parameters of the thermal equivalent model based on fully-on temperature control data, wherein the fully-on temperature control data refers to relevant temperature control data when multiple indoor units in the building site are turned on at the same time; If it is detected that some of the indoor units in the building are turned on, indoor unit information of the indoor units is obtained; Correcting the initial optimization parameter value according to the indoor unit information of the part of indoor units to obtain a corrected optimization parameter value; The modified optimized parameter value is applied to the thermal equivalent model to obtain an optimized thermal equivalent model, so as to use the optimized thermal equivalent model to control the outdoor unit of the multi-split air conditioner.

2. The method according to claim 1, characterized in that The correcting the initial optimized parameter value according to the indoor unit information of the part of indoor units to obtain the corrected optimized parameter value includes: Correcting the initial thermal resistance value in the initial optimization parameter value according to the number of powered-on indoor units of the part of indoor units to obtain a corrected thermal resistance value; And / or, the initial thermal capacity value in the initial optimization parameter value is corrected according to the rated capacity of the powered-on indoor units of the part of indoor units to obtain a corrected thermal capacity value.

3. The method according to claim 2, characterized in that The correcting the initial thermal resistance value in the initial optimization parameter value according to the number of the powered-on indoor units of the part of indoor units to obtain the corrected thermal resistance value includes: Get the convective heat transfer correction factor; Calculating the ratio of the number of powered-on indoor units to the total number of the plurality of indoor units in the building to obtain a powered-on indoor unit ratio; According to the convective heat transfer correction coefficient and the ratio of the powered-on indoor units, the initial thermal resistance value in the initial optimization parameter value is corrected to obtain a corrected thermal resistance value.

4. The method according to claim 3, characterized in that The method of correcting the initial thermal resistance value in the initial optimization parameter value according to the convective heat transfer correction coefficient and the ratio of the powered-on indoor units to obtain the corrected thermal resistance value includes: According to the formula R i (t) = R i *(1+α*p) for correction calculation, where R i Refers to the initial thermal resistance value, R i (t) refers to the corrected thermal resistance value, α refers to the convective heat transfer correction coefficient, and p refers to the proportion of indoor units that are turned on.

5. The method according to claim 2, characterized in that: The correcting the initial heat capacity value in the initial optimization parameter value according to the rated capacity of the powered-on indoor units of the part of the indoor units to obtain the corrected heat capacity value includes: Get the heat capacity attenuation coefficient; Calculating the ratio of the rated capacity of the powered-on indoor unit to the total rated capacity of the plurality of indoor units in the building to obtain a rated capacity ratio; According to the heat capacity attenuation coefficient and the rated capacity ratio, the initial heat capacity value in the initial optimization parameter value is corrected to obtain a corrected heat capacity value.

6. The method according to claim 5, characterized in that The step of correcting the initial heat capacity value in the initial optimization parameter value according to the heat capacity attenuation coefficient and the rated capacity ratio to obtain a corrected heat capacity value includes: According to formula C j (t) = C j *(1-β*q) for correction calculation, where C j Refers to the initial heat capacity value, C j (t) refers to the corrected heat capacity value, β refers to the heat capacity attenuation coefficient, and q refers to the rated capacity ratio.

7. The method according to claim 2, characterized in that The thermal equivalent model is a 4R3C model, wherein the initial thermal resistance value refers to the thermal resistance value of the thermal resistance of the wall and the indoor convection heat transfer, and the initial heat capacity value refers to the heat capacity value of the air heat capacity.

8. A multi-connected air conditioning control device, characterized in that: include: a memory storing a computer program; A processor reads a computer program stored in a memory to execute the method according to any one of claims 1 to 7.

9. A storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor of a multi-split air-conditioning control device, the multi-split air-conditioning control device executes the method described in any one of claims 1 to 7.

10. A multi-split air conditioner, characterized in that: It includes the multi-split air conditioning control device as described in claim 8 and other air conditioning modules.

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