Multi-connected machine self-cleaning control method and device, multi-connected machine and computer readable storage medium

Abstract

The embodiment of the application provides a kind of multi-connected machine self-cleaning control method, device, multi-connected machine and computer readable storage medium, the multi-connected machine includes outdoor unit and multiple indoor units, the multi-connected machine self-cleaning control method includes: determining target indoor unit in the multiple indoor units and the self-cleaning demand priority of the target indoor unit, the target indoor unit is the indoor unit with self-cleaning demand;According to the actual load demand of the multi-connected machine, determine the upper limit of the number of indoor units allowed to self-clean simultaneously;According to the self-cleaning demand priority of each target indoor unit and the upper limit of the number of indoor units allowed to self-clean simultaneously, determine the self-cleaning sequence of each target indoor unit;Control each target indoor unit sequentially self-cleaning according to the self-cleaning sequence.

Description

Technical Field

[0001] This application relates to the field of multi-split air conditioning technology, specifically to a self-cleaning control method, device, multi-split air conditioning unit, and computer-readable storage medium for multi-split air conditioning units. Background Technology

[0002] As air conditioners run for an extended period, indoor units are prone to accumulating dust and breeding harmful microorganisms, leading to decreased performance and potential harm to users' health. Multi-split air conditioners consist of multiple indoor units, each with varying operating times and environments. Ineffective self-cleaning control methods in related technologies fail to accurately control the self-cleaning of these different units, resulting in poor overall performance for multi-split systems. Summary of the Invention

[0003] This application provides a method, apparatus, multi-split air conditioner self-cleaning control method, and computer-readable storage medium, which can accurately control different indoor units to perform self-cleaning and improve the operating performance of the multi-split air conditioner.

[0004] In a first aspect, embodiments of this application provide a self-cleaning control method for a multi-split air conditioning system. The multi-split air conditioning system includes an outdoor unit and multiple indoor units. The self-cleaning control method includes: determining a target indoor unit among the multiple indoor units and the self-cleaning requirement priority of the target indoor unit, wherein the target indoor unit is an indoor unit with a self-cleaning requirement; determining an upper limit on the number of indoor units that can self-clean simultaneously based on the actual load requirement of the multi-split air conditioning system; determining the self-cleaning sequence of each target indoor unit based on the self-cleaning requirement priority of each target indoor unit and the upper limit on the number of indoor units that can self-clean simultaneously; and controlling each target indoor unit to perform self-cleaning sequentially according to the self-cleaning sequence.

[0005] In some embodiments, determining a target indoor unit among the plurality of indoor units includes: determining whether the concentration of at least one type of pollutant in the indoor unit is greater than or equal to a first concentration threshold corresponding to that type of pollutant or whether the operating time of the indoor unit is greater than or equal to an operating time threshold, wherein the pollutant includes at least one type of dust and microorganisms; and determining the indoor unit as the target indoor unit in response to determining that the concentration of at least one type of pollutant in the indoor unit is greater than or equal to the first concentration threshold corresponding to that type of pollutant or that the operating time of the indoor unit is greater than or equal to the operating time threshold.

[0006] In some embodiments, determining the self-cleaning requirement priority of the target indoor unit includes: determining whether the concentration of at least one type of pollutant in the target indoor unit is greater than or equal to a second concentration threshold corresponding to that type of pollutant, wherein the second concentration threshold is greater than a first concentration threshold; in response to determining that the concentration of at least one type of pollutant in the target indoor unit is greater than or equal to the second concentration threshold corresponding to that type of pollutant, determining that the self-cleaning requirement priority of the target indoor unit is the highest level; in response to determining that the concentration of all types of pollutants in the target indoor unit is less than the second concentration threshold corresponding to that type of pollutant, determining that the self-cleaning requirement priority of the target indoor unit is the second highest level, and performing the following sorting operation on the second highest level target indoor units: determining the priority coefficient of the second highest level target indoor units by weighting the pollutant concentration and operating time; and sorting the target indoor units in descending order according to the priority coefficients of each second highest level target indoor unit to determine the self-cleaning requirement priority of the target indoor unit among the second highest level target indoor units.

[0007] In some embodiments, determining the priority coefficient of the second-highest-level target indoor unit based on the pollutant concentration and operating time of the target indoor unit includes: obtaining the current concentration, initial concentration, and pollutant weight coefficient of various pollutants of the second-highest-level target indoor unit, as well as the operating time of the target indoor unit, the operating time of the outdoor unit, and the time weight coefficient; and determining the priority coefficient of the second-highest-level target indoor unit based on the current concentration, initial concentration, and pollutant weight coefficient of various pollutants of the target indoor unit, as well as the operating time of the target indoor unit, the operating time of the outdoor unit, and the time weight coefficient.

[0008] In some embodiments, determining the upper limit of the number of indoor units that can simultaneously self-clean based on the actual load requirements of the multi-split air conditioner includes: obtaining the upper limit power and current power of the multi-split air conditioner, the self-cleaning power of the indoor units, and the outdoor ambient temperature; and determining the upper limit of the number of indoor units that can simultaneously self-clean based on the upper limit power and current power of the multi-split air conditioner, the self-cleaning power of the indoor units, and the outdoor ambient temperature.

[0009] In some embodiments, determining the upper limit of the number of indoor units that can simultaneously self-clean based on the upper limit power and current power of the multi-split air conditioner, the self-cleaning power of the indoor unit, and the outdoor ambient temperature includes: determining a self-cleaning power correction coefficient based on the outdoor ambient temperature; and determining the upper limit of the number of indoor units that can simultaneously self-clean based on the difference between the upper limit power and current power of the multi-split air conditioner, the self-cleaning power of the indoor unit, and the self-cleaning power correction coefficient.

[0010] In some embodiments, controlling each target indoor unit to perform self-cleaning sequentially according to the self-cleaning sequence includes: controlling the target indoor unit to display self-cleaning information; determining whether the multi-split unit receives a shutdown command within a preset time period from the time the target indoor unit displays the self-cleaning information; in response to determining that the multi-split unit does not receive a shutdown command within the preset time period from the time the target indoor unit displays the self-cleaning information, controlling the target indoor unit to perform self-cleaning; and in response to determining that the multi-split unit receives a shutdown command within the preset time period from the time the target indoor unit displays the self-cleaning information, controlling the target indoor unit to perform self-cleaning when the multi-split unit is turned on again.

[0011] Secondly, embodiments of this application provide a multi-split air conditioner self-cleaning control device. The multi-split air conditioner includes an outdoor unit and multiple indoor units. The multi-split air conditioner self-cleaning control device includes: a priority determination circuit configured to determine a target indoor unit among the multiple indoor units and the self-cleaning requirement priority of the target indoor unit, wherein the target indoor unit is an indoor unit with a self-cleaning requirement; a self-cleaning sequence determination circuit configured to determine the self-cleaning sequence of each target indoor unit based on the self-cleaning requirement priority of each target indoor unit and the upper limit of the number of indoor units that can self-clean simultaneously; and a self-cleaning control circuit configured to control each target indoor unit to perform self-cleaning sequentially according to the self-cleaning sequence.

[0012] Thirdly, embodiments of this application provide a multi-split air conditioner, including: an outdoor unit; multiple indoor units; a processor; and a memory storing a computer program, wherein when the computer program is executed by the processor, it implements the multi-split air conditioner self-cleaning control method as described in any of the above embodiments.

[0013] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the multi-unit self-cleaning control method described above.

[0014] The multi-split air conditioning self-cleaning control method provided in this application identifies target indoor units and their self-cleaning requirement priorities among multiple indoor units. It also determines an upper limit on the number of indoor units that can simultaneously self-clean based on the actual load requirements of the multi-split air conditioning system. Furthermore, it determines the self-cleaning sequence of each target indoor unit based on its self-cleaning requirement priority and the upper limit on the number of indoor units that can simultaneously self-clean, and controls each target indoor unit to perform self-cleaning sequentially according to this sequence. This allows for accurate control of different indoor units to perform self-cleaning in a specific order, ensuring that target indoor units self-clean in batches according to their level of contamination, avoiding interference with the normal operation of the multi-split air conditioning system, guaranteeing that the actual load requirements of the multi-split air conditioning system are always met, and improving the operating efficiency of the multi-split air conditioning system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart of a multi-split air conditioner self-cleaning control method provided in some embodiments of this application;

[0017] Figure 2 This is a partial flowchart of a multi-unit air conditioner self-cleaning control method provided in some embodiments of this application;

[0018] Figure 3 This is another partial flowchart of a multi-split air conditioner self-cleaning control method provided in some embodiments of this application;

[0019] Figure 4 This is another partial flowchart of a multi-split air conditioner self-cleaning control method provided in some embodiments of this application;

[0020] Figure 5 This is another partial flowchart of a multi-split air conditioner self-cleaning control method provided in some embodiments of this application;

[0021] Figure 6 This is another partial flowchart of a multi-split air conditioner self-cleaning control method provided in some embodiments of this application;

[0022] Figure 7 This is another partial flowchart of the multi-split air conditioner self-cleaning control method provided in some embodiments of this application;

[0023] Figure 8 This is a structural diagram of a multi-unit system provided in some embodiments of this application.

[0024] Explanation of key component symbols:

[0025] 1-Multi-unit system, 10-Processor, 20-Memory. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0029] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0030] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0031] like Figure 1 As shown, in a first aspect, this application provides a multi-split air conditioner self-cleaning control method. The multi-split air conditioner 1 includes an outdoor unit and multiple indoor units. The multi-split air conditioner self-cleaning control method includes S10 to S40, which can accurately control different indoor units to perform self-cleaning and improve the operating effect of the multi-split air conditioner 1.

[0032] S10: Determine the target indoor unit among multiple indoor units and the priority of the target indoor unit's self-cleaning requirements.

[0033] Here, the target indoor unit is one that requires self-cleaning, and its level of contamination has reached a point where self-cleaning is necessary. The priority of the target indoor unit's self-cleaning requirement indicates the degree of its need for self-cleaning. If a target indoor unit has a high priority for self-cleaning, its contamination level is severe, and its need for self-cleaning is high, requiring prompt and timely self-cleaning. Conversely, if a target indoor unit has a low priority for self-cleaning, its contamination level is moderate, and its need for self-cleaning is low, allowing for self-cleaning later.

[0034] S20: Determine the upper limit of the number of indoor units that can self-clean simultaneously, based on the actual load requirements of the multi-split system 1.

[0035] Here, we can first determine the actual load requirements of the multi-split unit 1. Based on the actual load requirements of the multi-split unit 1, we can determine the upper limit of the number of indoor units in the multi-split unit 1 that can simultaneously perform self-cleaning. When controlling the aforementioned target indoor units to perform self-cleaning, the number of target indoor units in the multi-split unit 1 that simultaneously perform self-cleaning is controlled to not exceed the aforementioned upper limit. When the number of target indoor units in the multi-split unit 1 that simultaneously perform self-cleaning does not exceed the aforementioned upper limit, the multi-split unit 1 can meet the aforementioned actual load requirements and achieve usage effects such as heating, cooling, and dehumidification.

[0036] S30: Determine the self-cleaning sequence of each target indoor unit based on the priority of its self-cleaning needs and the maximum number of indoor units that can self-clean simultaneously.

[0037] Based on the priority of the self-cleaning needs of each target indoor unit, they can be arranged in descending order of priority. Based on the number of target indoor units and the maximum number of units that can self-clean simultaneously, the self-cleaning cycle for each target indoor unit can be determined. Combining the descending order and the self-cleaning cycle, the sequence number of the target indoor unit for each self-cleaning cycle can be determined, thus determining the self-cleaning order of each target indoor unit.

[0038] S40: Controls each target indoor unit to perform self-cleaning sequentially according to the self-cleaning order.

[0039] For example, among multiple indoor units, there are m target indoor units, and these m target indoor units are arranged in descending order of their self-cleaning needs, namely X1, X2, ..., X... mThe maximum number of indoor units that can self-clean simultaneously is j, meaning that j target indoor units can be self-cleaned simultaneously in each round. Thus, the number of self-cleaning rounds is an integer n determined by rounding up m / n. Accordingly, the first round can clean units X1 to X... j The first target indoor unit undergoes self-cleaning; the second round can target the Xth indoor unit. j+1 ~X 2j The target indoor unit performs self-cleaning, and so on.

[0040] Compared with related technologies, the embodiments of this application determine the target indoor unit and its self-cleaning requirement priority among multiple indoor units, and determine the upper limit of the number of indoor units that can self-clean simultaneously based on the actual load requirements of the multi-split air conditioner 1. Then, based on the self-cleaning requirement priority of each target indoor unit and the upper limit of the number of indoor units that can self-clean simultaneously, the self-cleaning sequence of each target indoor unit is determined, and each target indoor unit is controlled to perform self-cleaning sequentially according to the self-cleaning sequence. This allows for accurate control of different indoor units to perform self-cleaning in a specific sequence, ensuring that the target indoor units perform self-cleaning in batches according to the degree of contamination, while avoiding interference with the normal operation of the multi-split air conditioner 1, ensuring that the actual load requirements of the multi-split air conditioner 1 are always met, and improving the operating efficiency of the multi-split air conditioner 1.

[0041] like Figure 2 As shown, in some embodiments, S10 may include S11 to S12 to determine a target indoor unit among a plurality of indoor units.

[0042] S11: Determine whether the concentration of at least one type of pollutant in the indoor unit is greater than or equal to the first concentration threshold corresponding to that type of pollutant or whether the operating time of the indoor unit is greater than or equal to the operating time threshold.

[0043] Here, pollutants may include at least one of dust and microorganisms. When one of the pollutants is dust, the first concentration threshold corresponding to that pollutant is a first dust concentration threshold; when one of the pollutants is microorganisms, the first concentration threshold corresponding to that pollutant is a first microorganism concentration threshold.

[0044] The first concentration thresholds corresponding to different types of pollutants may be the same or different, and this application embodiment does not limit this. When an indoor unit has not been self-cleaned, the running time of the indoor unit may be the cumulative value of the running time from the initial start of the indoor unit to the current time; when an indoor unit has been self-cleaned, the running time of the indoor unit may be the cumulative value of the running time from the last self-cleaning of the indoor unit to the current time.

[0045] S12: In response to determining that the concentration of at least one type of pollutant in the indoor unit is greater than or equal to the first concentration threshold corresponding to that type of pollutant or the operating time of the indoor unit is greater than or equal to the operating time threshold, the indoor unit is determined to be the target indoor unit.

[0046] For example, if the dust concentration of an indoor unit is greater than or equal to a first dust concentration threshold, that indoor unit can be identified as the target indoor unit. Similarly, if the microbial concentration of an indoor unit is greater than or equal to a first microbial concentration threshold, that indoor unit can be identified as the target indoor unit. Even more exemplarily, if the operating time of an indoor unit is greater than or equal to an operating time threshold, that indoor unit can be identified as the target indoor unit. If the dust concentration of an indoor unit is less than the first dust concentration threshold, the microbial concentration of the indoor unit is less than the first microbial concentration threshold, and the operating time of the indoor unit is less than the operating time threshold, then that indoor unit can be determined not to be the target indoor unit and currently has no self-cleaning requirement.

[0047] By setting S11 to S12, the self-cleaning needs of each indoor unit can be accurately determined, thereby accurately identifying the target indoor unit.

[0048] like Figure 3 As shown, in some examples, S10 may include S13 to S15 to determine the priority of the self-cleaning needs of the target indoor unit.

[0049] S13: Determine whether the concentration of at least one type of pollutant in the target indoor unit is greater than or equal to the second concentration threshold corresponding to that type of pollutant.

[0050] Here, the second concentration threshold is greater than the first concentration threshold. When one of the pollutants is dust, the second concentration threshold corresponding to that pollutant is the second dust concentration threshold, which is greater than the first dust concentration threshold; when one of the pollutants is microorganisms, the second concentration threshold corresponding to that pollutant is the second microorganism concentration threshold, which is greater than the first microorganism concentration threshold.

[0051] S14: In response to determining that the concentration of at least one type of pollutant of the target indoor unit is greater than or equal to the second concentration threshold corresponding to that type of pollutant, the self-cleaning requirement priority of the target indoor unit is determined to be the highest level.

[0052] If the concentration of at least one type of pollutant in a target indoor unit is greater than or equal to the second concentration threshold corresponding to that type of pollutant, it can be determined that the pollution level of the target indoor unit has reached the most serious level, and the self-cleaning requirement of the target indoor unit is the highest priority.

[0053] For example, when the dust concentration of a target indoor unit is determined to be greater than or equal to a second dust concentration threshold, the self-cleaning requirement of that target indoor unit can be determined to be of the highest priority. As another example, when the microbial concentration of a target indoor unit is determined to be greater than or equal to a second microbial concentration threshold, the self-cleaning requirement of that target indoor unit can be determined to be of the highest priority. And as yet another example, when both the dust concentration and the microbial concentration of a target indoor unit are determined to be greater than or equal to a second dust concentration threshold, the self-cleaning requirement of that target indoor unit can be determined to be of the highest priority.

[0054] S15: In response to the determination that the concentration of various pollutants in the target indoor unit is less than the second concentration threshold corresponding to the pollutant, the self-cleaning requirement priority of the target indoor unit is determined to be the second highest priority, and the following sorting operations S151 to S152 are performed on the second highest priority target indoor units.

[0055] If the concentrations of all types of pollutants in the target indoor unit are all below the second concentration threshold corresponding to that type of pollutant, it can be determined that the pollution level of the target indoor unit is moderate, and the self-cleaning requirement priority of the target indoor unit is the second highest level, which is lower than the highest level.

[0056] For example, the contaminants considered may include dust and microorganisms. Accordingly, when it is determined that the dust concentration of a target indoor unit is less than a second dust concentration threshold and the microorganism concentration of the target indoor unit is less than a second microorganism concentration threshold, the self-cleaning requirement priority of the target indoor unit can be determined to be the second highest priority.

[0057] S151: The priority coefficient of the target indoor unit is determined by weighting the pollutant concentration and operating time of the target indoor unit of the second-highest level.

[0058] The priority coefficient of the next-highest-level target indoor unit can be determined by weighting the pollutant concentration and operating time. This priority coefficient comprehensively considers the pollutant concentration and its weight, as well as the operating time and its time weight, and can accurately characterize the priority of the next-highest-level target indoor unit. If the priority coefficient of the next-highest-level target indoor unit is larger, then the target indoor unit has a higher priority among all the next-highest-level target indoor units; if the priority coefficient of the next-highest-level target indoor unit is smaller, then the target indoor unit has a lower priority among all the next-highest-level target indoor units.

[0059] S152: Arrange the target indoor units in descending order according to the priority coefficient of each secondary-level target indoor unit to determine the priority of the self-cleaning requirement of the target indoor unit among each secondary-level target indoor unit.

[0060] By sorting the target indoor units in descending order of their priority coefficients, the self-cleaning priority of each target indoor unit within its respective sub-tier can be determined. Target indoor units ranked higher in this order have higher priority and require self-cleaning first among the sub-tier target indoor units; those ranked lower have lower priority and can perform self-cleaning later among the sub-tier target indoor units. It should be noted that the self-cleaning order of the sub-tier target indoor units follows that of the highest-tier target indoor unit.

[0061] By setting S13 to S15, the self-cleaning requirement priority of the target indoor unit can be accurately determined. Specifically, on the one hand, the target indoor units with the highest and second-highest self-cleaning requirement priority can be distinguished by the second concentration threshold; on the other hand, the target indoor units with the second-highest self-cleaning requirement priority can be sorted in descending order of priority to determine the self-cleaning requirement priority of the target indoor unit among the target indoor units with the second-highest self-cleaning requirement priority.

[0062] like Figure 4 As shown, for example, S151 may include S1511 to S1512.

[0063] S1511: Obtain the current concentration, initial concentration, and pollutant weight coefficient of various pollutants for the target indoor unit of the second-highest level, as well as the running time of the target indoor unit, the running time of the outdoor unit, and the time weight coefficient.

[0064] Here, when a target indoor unit has not yet undergone self-cleaning, the initial concentration of a certain type of pollutant can be the concentration value of that type of pollutant when the target indoor unit is first started; when an indoor unit has already undergone self-cleaning, the initial concentration of a certain type of pollutant can be the concentration value of that type of pollutant after the indoor unit has completed the last self-cleaning.

[0065] For example, when one type of pollutant is dust, the current concentration of that pollutant in the second-highest level target indoor unit is called the current dust concentration, the initial concentration of that pollutant in the second-highest level target indoor unit is called the initial dust concentration, and the weighting coefficient for that type of pollutant is called the dust weighting coefficient. As another example, when one type of pollutant is microorganisms, the current concentration of that pollutant in the second-highest level target indoor unit is called the current microbial concentration, the initial concentration of that pollutant in the second-highest level target indoor unit is called the initial microbial concentration, and the weighting coefficient for that type of pollutant is called the microbial weighting coefficient.

[0066] S1512: Based on the current concentration, initial concentration, and pollutant weight coefficient of various pollutants in the target indoor unit of the second-highest level, as well as the running time of the target indoor unit of the second-highest level, the running time of the outdoor unit, and the time weight coefficient, determine the priority coefficient of the target indoor unit of the second-highest level.

[0067] For example, the priority coefficient of the next higher-level target indoor unit can be determined according to the following formula:

[0068]

[0069] In the formula, k 优先级 k is the priority coefficient for the second-highest target indoor unit. 粉尘 k is the dust weighting coefficient. 时间 k is the time weighting coefficient. 微生物 C is the microbial weighting coefficient. 当前粉尘 For the current dust concentration of the target indoor unit of the second-highest level, C 初始粉尘 For the initial dust concentration of the target indoor unit at the second-highest level, C 当前微生物 For the current microbial concentration of the target indoor unit of the second-highest level, C 初始微生物 For the initial microbial concentration of the target indoor unit of the second-highest level, t 内机 For the second-highest target indoor unit's operating time, t 外机 This refers to the operating time of the outdoor unit.

[0070] like Figure 5 As shown, in some embodiments, S30 may include S31 to S32.

[0071] S31: Obtain the upper limit power and current power of the multi-split unit 1, the self-cleaning power of the indoor unit, and the outdoor ambient temperature.

[0072] Here, the upper limit power of the multi-split unit 1 refers to the maximum operating power of the multi-split unit 1 under the current operating conditions, the current power of the multi-split unit 1 refers to the real-time power of the multi-split unit 1 in the current functional mode, and the self-cleaning power of the indoor unit refers to the operating power of the target indoor unit when performing self-cleaning. The upper limit power of the multi-split unit 1 can be determined based on the rated power and redundancy coefficient of the multi-split unit 1. For example, it can be equal to the product of the rated power and the redundancy coefficient of the multi-split unit 1, where the redundancy coefficient is less than or equal to 1. For example, the redundancy coefficient can be less than 1, such as different values ​​like 0.9, 0.85, or 0.8, which is not limited in this embodiment. The upper limit power of the multi-split unit 1 and the self-cleaning power of the indoor unit can be measured by a power sensor or calculated by other calculation methods, while the outdoor ambient temperature can be measured by a temperature sensor installed on the outdoor side.

[0073] S32: Determine the maximum number of indoor units that can self-clean simultaneously based on the upper limit power and current power of the multi-split unit 1, the self-cleaning power of the indoor unit, and the outdoor ambient temperature.

[0074] Based on the upper limit power and current power of the multi-split unit 1, the self-cleaning power of the indoor unit, and the outdoor ambient temperature, the maximum number of indoor units in the multi-split unit 1 that can self-clean simultaneously under the current outdoor environmental conditions and while maintaining the normal operation of the current functional mode of the multi-split unit 1 can be determined. This maximum number is the upper limit of the number of indoor units that can self-clean simultaneously.

[0075] like Figure 6 As shown, in some examples, S32 may include S321 to S322.

[0076] S321: Determine the self-cleaning power correction factor based on the outdoor ambient temperature.

[0077] Here, the correlation between outdoor ambient temperature and self-cleaning power correction coefficient can be predetermined based on experimental test data, historical operating data, and other operational data. Thus, after obtaining the outdoor ambient temperature, the self-cleaning power correction coefficient corresponding to the current outdoor ambient temperature can be determined based on this correlation.

[0078] S322: Determine the maximum number of indoor units that can self-clean simultaneously based on the difference between the upper limit power and the current power of the multi-split unit 1, the self-cleaning power of the indoor unit, and the self-cleaning power correction coefficient.

[0079] For example, the priority coefficient of the next higher-level target indoor unit can be determined according to the following formula:

[0080]

[0081] In the formula, j is the upper limit of the number of indoor units that can self-clean simultaneously, and k 冗余 P is the redundancy coefficient. 额定 P is the rated power of the multi-split unit 1. 当前 k represents the current power of the multi-split air conditioning system. 自清洁 P is the self-cleaning power correction factor. 自清洁 This refers to the self-cleaning power of the indoor unit.

[0082] like Figure 7 As shown, in some embodiments, S40 may include S41 to S44.

[0083] S41: Controls the target indoor unit to display self-cleaning information.

[0084] Here, the self-cleaning information is used to prompt the user that the target indoor unit is about to perform self-cleaning. The form of the self-cleaning information can be different types such as execution code, brief text information, or color / graphics, and this application embodiment does not limit this.

[0085] S42: Determine whether the multi-split unit 1 receives a shutdown command within a preset time period starting from the time the target indoor unit displays the self-cleaning information.

[0086] Here, the shutdown command can be input by the user via a control terminal such as a remote control, control panel, or smart mobile terminal. It should be noted that if the multi-split unit 1 shuts down due to an unexpected power outage, it is considered that multi-split unit 1 has received a shutdown command.

[0087] S43: In response to determining that the multi-split unit 1 has not received a shutdown command within a preset time period from the time the target indoor unit displays the self-cleaning information, the target indoor unit is controlled to perform self-cleaning.

[0088] If the multi-split unit 1 does not receive a shutdown command within a preset time period starting from when the target indoor unit displays the self-cleaning information, it means that the multi-split unit 1 will continue to operate normally and will not shut down. In this way, when the preset time has elapsed since the target indoor unit displays the self-cleaning information, the target indoor unit can be controlled to perform self-cleaning.

[0089] S44: In response to determining that within a preset time after the target indoor unit displays the self-cleaning information, the multi-split unit 1 receives a shutdown command and controls the target indoor unit to perform self-cleaning when the multi-split unit 1 is turned on again.

[0090] If the multi-split unit 1 receives a shutdown command within a preset time period starting from the time the target indoor unit displays the self-cleaning information, it indicates that the multi-split unit 1 is about to shut down, or that it has already shut down before the preset time has elapsed since the target indoor unit displayed the self-cleaning information, which may prevent the target indoor unit from completing its self-cleaning process. In this case, the self-cleaning time of the target indoor unit can be postponed until the multi-split unit 1 is restarted, that is, the self-cleaning of the target indoor unit can be forcibly performed when the multi-split unit 1 is restarted. This can prevent the self-cleaning of the target indoor unit from being unexpectedly terminated due to the shutdown of the multi-split unit 1, ensuring that the self-cleaning of the target indoor unit is completed completely and thoroughly.

[0091] Secondly, embodiments of this application provide a multi-split air conditioner self-cleaning control device. The multi-split air conditioner 1 includes an outdoor unit and multiple indoor units. The multi-split air conditioner self-cleaning control device includes: a priority determination circuit configured to determine a target indoor unit among the multiple indoor units and the priority of the self-cleaning requirement of the target indoor unit, wherein the target indoor unit is an indoor unit with a self-cleaning requirement; a self-cleaning sequence determination circuit configured to determine the self-cleaning sequence of each target indoor unit based on the priority of the self-cleaning requirement of each target indoor unit and the upper limit of the number of indoor units that can be self-cleaned simultaneously; and a self-cleaning control circuit configured to control each target indoor unit to perform self-cleaning sequentially according to the self-cleaning sequence.

[0092] like Figure 8As shown, in a third aspect, embodiments of this application provide a multi-split air conditioner 1, including an outdoor unit, multiple indoor units, a processor 10, and a memory 20. The memory 20 stores a computer program, which, when executed by the processor 10, implements the multi-split air conditioner self-cleaning control method as provided in any of the above embodiments.

[0093] Processor 10 is connected to memory 20 and can perform various actions and processes according to the program stored in memory 20. Specifically, processor 10 can be an integrated circuit chip with signal processing capabilities. The processor 10 can be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, and can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor, and can be based on x86 architecture or ARM architecture.

[0094] Memory 20 may be volatile or non-volatile, or may include both. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that memory 20 of the methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0095] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor 10 to execute the steps in the control method of any of the above embodiments.

[0096] For example, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the embodiments of this application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0097] The foregoing has provided a detailed description of a multi-split air conditioner self-cleaning control method, apparatus, multi-split air conditioner, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A self-cleaning control method for multi-split air conditioners, characterized in that, The multi-split air conditioner includes an outdoor unit and multiple indoor units, and the self-cleaning control method for the multi-split air conditioner includes: Determine the target indoor unit among the plurality of indoor units and the priority of the self-cleaning requirement of the target indoor unit, wherein the target indoor unit is an indoor unit with a self-cleaning requirement; The maximum number of indoor units that can self-clean simultaneously is determined based on the actual load requirements of the multi-split air conditioner. The self-cleaning sequence of each target indoor unit is determined based on the priority of its self-cleaning needs and the maximum number of indoor units that can self-clean simultaneously. Control each target indoor unit to perform self-cleaning sequentially according to the self-cleaning sequence; Determining the target indoor unit among the plurality of indoor units includes: Determine whether the concentration of at least one type of pollutant in the indoor unit is greater than or equal to a first concentration threshold corresponding to that type of pollutant or whether the operating time of the indoor unit is greater than or equal to an operating time threshold, wherein the pollutant includes at least one type of dust and microorganisms; In response to determining that the concentration of at least one type of pollutant in the indoor unit is greater than or equal to a first concentration threshold corresponding to that type of pollutant or that the operating time of the indoor unit is greater than or equal to an operating time threshold, the indoor unit is determined to be the target indoor unit; Determining the priority of the self-cleaning requirements of the target indoor unit includes: Determine whether the concentration of at least one type of pollutant in the target indoor unit is greater than or equal to a second concentration threshold corresponding to that type of pollutant, wherein the second concentration threshold is greater than the first concentration threshold; In response to determining that the concentration of at least one type of pollutant in the target indoor unit is greater than or equal to the second concentration threshold corresponding to that type of pollutant, the self-cleaning requirement priority of the target indoor unit is determined to be the highest level; In response to determining that the concentration of all types of pollutants in the target indoor unit is less than the second concentration threshold corresponding to the type of pollutant, the self-cleaning requirement priority of the target indoor unit is determined to be the second highest priority, and the following sorting operation is performed on the second highest priority target indoor units; The priority coefficient of the target indoor unit is determined by weighting the pollutant concentration and operating time of the target indoor unit of the second-highest level. The target indoor units are sorted in descending order according to their priority coefficients to determine the self-cleaning requirement priority of each target indoor unit among the target indoor units of each sub-level.

2. The multi-split air conditioner self-cleaning control method according to claim 1, characterized in that, The priority coefficient of the next-highest-level target indoor unit is determined by weighting the pollutant concentration and operating time of the target indoor unit, including: Obtain the current concentration, initial concentration, and pollutant weight coefficient of various pollutants of the target indoor unit of the second-highest level, as well as the running time of the target indoor unit, the running time of the outdoor unit, and the time weight coefficient. The priority coefficient of the second-highest-level target indoor unit is determined based on the current concentration, initial concentration, and pollutant weight coefficient of various pollutants of the target indoor unit, as well as the operating time of the target indoor unit, the operating time of the outdoor unit, and the time weight coefficient.

3. The multi-split air conditioner self-cleaning control method according to claim 1, characterized in that, Based on the actual load requirements of the multi-split air conditioning system, determine the upper limit of the number of indoor units that can simultaneously perform self-cleaning, including: The upper limit power and current power of the multi-split air conditioner, the self-cleaning power of the indoor unit, and the outdoor ambient temperature are obtained. The upper limit of the number of indoor units that can self-clean simultaneously is determined based on the upper limit power and current power of the multi-split air conditioner, the self-cleaning power of the indoor unit, and the outdoor ambient temperature.

4. The multi-split air conditioner self-cleaning control method according to claim 3, characterized in that, Based on the upper limit power and current power of the multi-split air conditioner, the self-cleaning power of the indoor unit, and the outdoor ambient temperature, determine the upper limit of the number of indoor units that can simultaneously perform self-cleaning, including: The self-cleaning power correction factor is determined based on the outdoor ambient temperature. The upper limit of the number of indoor units that can self-clean simultaneously is determined based on the difference between the upper limit power and the current power of the multi-split air conditioner, the self-cleaning power of the indoor unit, and the self-cleaning power correction coefficient.

5. The multi-split air conditioner self-cleaning control method according to claim 1, characterized in that, Control each target indoor unit to perform self-cleaning sequentially according to the self-cleaning sequence, including: Control the target indoor unit to display self-cleaning information; Determine whether the multi-split air conditioner receives a shutdown command within a preset time period from the time the target indoor unit displays the self-cleaning information; In response to determining that the multi-split air conditioner has not received a shutdown command within a preset time period from the time the target indoor unit displays the self-cleaning information, the system controls the target indoor unit to perform self-cleaning. In response to determining that within a preset time period from the time the target indoor unit displays the self-cleaning information, the multi-split unit receives a shutdown command and controls the target indoor unit to perform self-cleaning when the multi-split unit is turned on again.

6. A self-cleaning control device for multi-split air conditioning units, characterized in that, The multi-split air conditioner includes an outdoor unit and multiple indoor units, and the self-cleaning control device for the multi-split air conditioner includes: A priority determination circuit is configured to determine a target indoor unit among the plurality of indoor units and the self-cleaning requirement priority of the target indoor unit, wherein the target indoor unit is an indoor unit with a self-cleaning requirement. The self-cleaning sequence determination circuit is configured to determine the self-cleaning sequence of each target indoor unit based on the priority of the self-cleaning needs of each target indoor unit and the upper limit of the number of indoor units that can be self-cleaned simultaneously. The self-cleaning control circuit is configured to control each target indoor unit to perform self-cleaning sequentially according to the self-cleaning sequence. Determining the target indoor unit among the plurality of indoor units includes: Determine whether the concentration of at least one type of pollutant in the indoor unit is greater than or equal to a first concentration threshold corresponding to that type of pollutant or whether the operating time of the indoor unit is greater than or equal to an operating time threshold, wherein the pollutant includes at least one type of dust and microorganisms; In response to determining that the concentration of at least one type of pollutant in the indoor unit is greater than or equal to a first concentration threshold corresponding to that type of pollutant or that the operating time of the indoor unit is greater than or equal to an operating time threshold, the indoor unit is determined to be the target indoor unit; Determining the priority of the self-cleaning requirement of the target indoor unit includes: Determine whether the concentration of at least one type of pollutant in the target indoor unit is greater than or equal to a second concentration threshold corresponding to that type of pollutant, wherein the second concentration threshold is greater than the first concentration threshold; In response to determining that the concentration of at least one type of pollutant in the target indoor unit is greater than or equal to the second concentration threshold corresponding to that type of pollutant, the self-cleaning requirement priority of the target indoor unit is determined to be the highest level; In response to determining that the concentration of all types of pollutants in the target indoor unit is less than the second concentration threshold corresponding to the type of pollutant, the self-cleaning requirement priority of the target indoor unit is determined to be the second highest priority, and the following sorting operation is performed on the second highest priority target indoor units; The priority coefficient of the target indoor unit is determined by weighting the pollutant concentration and operating time of the target indoor unit of the second-highest level. The target indoor units are sorted in descending order according to their priority coefficients to determine the self-cleaning requirement priority of each target indoor unit among the target indoor units of each sub-level.

7. A multi-split air conditioner, characterized in that, include: Outdoor unit; Multiple indoor units; Memory, which stores computer programs; A processor, wherein the computer program, when executed by the processor, implements the multi-unit self-cleaning control method as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the multi-unit self-cleaning control method according to any one of claims 1 to 5.

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