Multi-split air conditioner self-cleaning control method and device, multi-split air conditioner and computer readable storage medium

Abstract

The embodiment of the invention provides a multi-split air conditioner self-cleaning control method and device, a multi-split air conditioner and a computer readable storage medium, the multi-split air conditioner comprises an outdoor unit and a plurality of indoor units, and the multi-split air conditioner self-cleaning control method comprises the steps that a target indoor unit in the multiple indoor units and the self-cleaning requirement priority of the target indoor unit are determined, the target indoor unit is an indoor unit with a self-cleaning requirement; according to the actual load requirement of the multi-split air conditioner, the upper limit of the number of indoor units allowing simultaneous self-cleaning is determined; according to the self-cleaning demand priorities of all the target indoor units and the upper limit of the number of the indoor units allowing simultaneous self-cleaning, the self-cleaning sequence of all the target indoor units is determined; and all the target indoor units are controlled to conduct self-cleaning in sequence according to the self-cleaning sequence.

Description

Technical Field

[0001] The present application relates to the technical field of multi-split systems, and in particular to a multi-split system self-cleaning control method and device, a multi-split system, and a computer-readable storage medium. Background Art

[0002] As air conditioners run longer, their indoor units become susceptible to dust accumulation and the growth of harmful microorganisms, leading to reduced performance and potentially damaging user health. Multi-split systems (MSRSs) include multiple indoor units, each with its own operating hours and environments. The self-cleaning control methods currently used in related technologies are ineffective in accurately controlling the self-cleaning of each unit, resulting in poor performance. Summary of the Invention

[0003] The embodiments of the present application provide a multi-split self-cleaning control method, device, multi-split and computer-readable storage medium, which can accurately control different indoor units to perform self-cleaning and improve the operating effect of the multi-split.

[0004] In the first aspect, an embodiment of the present application provides a multi-split self-cleaning control method, wherein the multi-split includes an outdoor unit and multiple indoor units, and the multi-split self-cleaning control method includes: determining a target indoor unit among the multiple indoor units and a 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 allowed to self-clean at the same time according to the actual load requirement of the multi-split; determining a self-cleaning order for each target indoor unit according to the self-cleaning requirement priority of each target indoor unit and the upper limit on the number of indoor units allowed to self-clean at the same time; and controlling each target indoor unit to perform self-cleaning in sequence according to the self-cleaning order.

[0005] In some embodiments, determining a target indoor unit among the multiple 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 the type of pollutant or whether the operating time of the indoor unit is greater than or equal to an operating time threshold, the pollutants including 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 the first concentration threshold corresponding to the type of pollutant or the operating time of the indoor unit is greater than or equal to the operating time threshold, determining the indoor unit as the target indoor unit.

[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 the type of pollutant, the second concentration threshold being 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 the 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 concentrations of all types of pollutants in the target indoor unit are less than the second concentration threshold corresponding to the 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 operations on the second highest level target indoor units; determining the priority coefficient of the second highest level target indoor unit by weighting the pollutant concentration and operating time of the second highest level target indoor unit; and arranging the priority coefficients of each second highest level target indoor unit in descending order to determine the self-cleaning requirement priority of the target indoor unit among each second highest level target indoor unit.

[0007] In some embodiments, the priority coefficient of the sub-higher target indoor unit is determined based on the pollutant concentration and operating time of the sub-higher target indoor unit, including: obtaining the current concentration, initial concentration and pollutant weight coefficient of each type of pollutant of the sub-higher target indoor unit, as well as the operating time of the sub-higher target indoor unit, the operating time and time weight coefficient of the outdoor unit; determining the priority coefficient of the sub-higher target indoor unit based on the current concentration, initial concentration and pollutant weight coefficient of each type of pollutant of the sub-higher target indoor unit, as well as the operating time of the outdoor unit, the operating time and time weight coefficient of the outdoor unit.

[0008] In some embodiments, the upper limit of the number of indoor units allowed to self-clean simultaneously is determined based on the actual load demand of the multi-split system, including: obtaining the upper limit power and current power of the multi-split system, the self-cleaning power of the indoor unit and the outdoor ambient temperature; based on the upper limit power and current power of the multi-split system, the self-cleaning power of the indoor unit and the outdoor ambient temperature, the upper limit of the number of indoor units allowed to self-clean simultaneously is determined.

[0009] In some embodiments, the upper limit of the number of indoor units allowed to self-clean simultaneously is determined based on the upper limit power and current power of the multi-split system, the self-cleaning power of the indoor unit and the outdoor ambient temperature, including: determining a self-cleaning power correction coefficient based on the outdoor ambient temperature; determining the upper limit of the number of indoor units allowed to self-clean simultaneously based on the difference between the upper limit power and current power of the multi-split system, the self-cleaning power of the indoor unit and the self-cleaning power correction coefficient.

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

[0011] In the second aspect, an embodiment of the present application provides a multi-split self-cleaning control device, which includes an outdoor unit and multiple indoor units. The multi-split 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 according to the self-cleaning requirement priority of each target indoor unit and the upper limit of the number of indoor units allowed to self-clean at the same time; and a self-cleaning control circuit, configured to control each target indoor unit to perform self-cleaning in sequence according to the self-cleaning sequence.

[0012] In a third aspect, an embodiment of the present application provides a multi-split system, comprising: an outdoor unit; multiple indoor units; a processor; and a memory storing a computer program, which, when executed by the processor, implements the multi-split system self-cleaning control method as described in any of the above embodiments.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, and the computer program is loaded by a processor to execute the steps in the multi-split self-cleaning control method described above.

[0014] The multi-split self-cleaning control method provided in the embodiment of the present application determines the target indoor unit and its self-cleaning demand priority among multiple indoor units, and determines the upper limit of the number of indoor units allowed to self-clean simultaneously according to the actual load demand of the multi-split, and then determines the self-cleaning order of each target indoor unit 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, and controls each target indoor unit to self-clean in sequence according to the self-cleaning order. In this way, different indoor units can be accurately controlled to self-clean in accordance with the self-cleaning order, which can not only make the target indoor units self-clean in batches according to the degree of pollution, but also avoid interference with the normal operation of the multi-split, ensure that the actual load demand of the multi-split is always met, and improve the operation effect of the multi-split. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a flow chart of a multi-connected self-cleaning control method provided by some embodiments of the present application;

[0017] Figure 2 This is a partial flow chart of a multi-connected self-cleaning control method provided in some embodiments of the present application;

[0018] Figure 3 is another partial flow chart of the multi-connected self-cleaning control method provided by some embodiments of the present application;

[0019] Figure 4 This is another partial flow chart of the multi-connected self-cleaning control method provided in some embodiments of the present application;

[0020] Figure 5 This is another partial flow chart of the multi-connected self-cleaning control method provided in some embodiments of the present application;

[0021] Figure 6 This is another partial flow chart of the multi-connected self-cleaning control method provided in some embodiments of the present application;

[0022] Figure 7 This is another partial flow chart of the multi-connected self-cleaning control method provided in some embodiments of the present application;

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

[0024] Description of main component symbols:

[0025] 1-Multi-connection, 10-Processor, 20-Memory. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[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 "suitable for" or "configured to" in this application is intended to be open and inclusive language, and does not exclude devices that are adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0030] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0031] like Figure 1 As shown, in the first aspect, an embodiment of the present application provides a multi-split self-cleaning control method, the multi-split 1 includes an outdoor unit and multiple indoor units, and the multi-split self-cleaning control method includes S10~S40, which can accurately control different indoor units to perform self-cleaning, thereby improving the operation effect of the multi-split 1.

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

[0033] Here, the target indoor unit is an indoor unit with a self-cleaning requirement, and the pollution level of the target indoor unit has reached a level that requires self-cleaning. The self-cleaning requirement priority of the target indoor unit can indicate the degree of self-cleaning requirement of the target indoor unit. If the self-cleaning requirement priority of a target indoor unit is high, the pollution level of the target indoor unit is high and the self-cleaning requirement of the target indoor unit is high, and the self-cleaning requirement of the target indoor unit should be performed as soon as possible. If the self-cleaning requirement priority of a target indoor unit is low, the pollution level of the target indoor unit is medium and the self-cleaning requirement of the target indoor unit is low, and the self-cleaning of the target indoor unit can be performed later.

[0034] S20: Determine the upper limit of the number of indoor units that are allowed to self-clean simultaneously based on the actual load demand of the multi-split system 1.

[0035] Here, the actual load demand of the multi-split system 1 can be determined first. Based on the actual load demand of the multi-split system 1, the upper limit of the number of indoor units in the multi-split system 1 that are allowed to self-clean simultaneously can be determined. When controlling the aforementioned target indoor units to perform self-cleaning, the number of target indoor units in the multi-split system 1 that are simultaneously self-cleaning is controlled to not exceed the aforementioned upper limit of the number of indoor units. When the number of target indoor units in the multi-split system 1 that are simultaneously self-cleaning does not exceed the aforementioned upper limit of the number of indoor units, the multi-split system 1 can meet the actual load demand and achieve desired effects, such as heating, cooling, and dehumidification.

[0036] S30: Determine the self-cleaning order of each target indoor unit 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.

[0037] Based on the self-cleaning priority of each target indoor unit, the target indoor units can be sorted in descending order from highest to lowest. The number of target indoor units and the upper limit of the number of indoor units allowed to self-clean simultaneously can be used to determine the self-cleaning rounds for the target indoor units. Combining the descending order and the self-cleaning rounds described above, the serial number of the target indoor units to be self-cleaned in each round can be determined, thereby determining the self-cleaning order for each target indoor unit.

[0038] S40: Control each target indoor unit to perform self-cleaning in sequence.

[0039] For example, there are m target indoor units among multiple indoor units, and the m target indoor units are arranged in descending order according to the self-cleaning demand priority from high to low as X1, X2, ..., X mThe upper limit of the number of indoor units that can be self-cleaned at the same time is j, that is, each round can simultaneously self-clean j target indoor units. In this way, the self-cleaning round is an integer n determined by rounding m / n. Accordingly, the first round can self-clean the X1~X j The target indoor units can be self-cleaned in the second round. j+1 ~X 2j The target indoor unit will perform self-cleaning, and so on.

[0040] Compared with the related art, the embodiment of the present application determines the target indoor unit and its self-cleaning demand priority among multiple indoor units, and determines the upper limit of the number of indoor units allowed to self-clean simultaneously based on the actual load demand of the multi-split unit 1. Then, the self-cleaning order of each target indoor unit is determined based on 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, and controls each target indoor unit to self-clean in sequence according to the self-cleaning order. In this way, different indoor units can be accurately controlled to self-clean in accordance with the self-cleaning order, which can not only make the target indoor units self-clean in batches according to the degree of pollution, but also avoid interference with the normal operation of the multi-split unit 1, ensure that the actual load demand of the multi-split unit 1 is always met, and improve the operating effect of the multi-split unit 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 a first concentration threshold corresponding to the type of pollutant or whether the operating time of the indoor unit is greater than or equal to an operating time threshold.

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

[0044] The first concentration thresholds corresponding to different types of pollutants may be the same or different, and this is not limited in the present embodiment. If an indoor unit has not yet been self-cleaned, the operating time of the indoor unit may be the cumulative operating time from the initial startup of the indoor unit to the current moment; if an indoor unit has been self-cleaned, the operating time of the indoor unit may be the cumulative operating time from the last self-cleaning of the indoor unit to the current moment.

[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 a first concentration threshold corresponding to the type of pollutant or the operating time of the indoor unit is greater than or equal to an operating time threshold, determine the indoor unit as a target indoor unit.

[0046] Exemplarily, when it is determined that the dust concentration of an indoor unit is greater than or equal to a first dust concentration threshold, the indoor unit can be determined as a target indoor unit. In another exemplary embodiment, when it is determined that the microbial concentration of an indoor unit is greater than or equal to a first microbial concentration threshold, the indoor unit can be determined as a target indoor unit. In another exemplary embodiment, when it is determined that the operating time of an indoor unit is greater than or equal to an operating time threshold, the indoor unit can be determined as a target indoor unit. When it is determined that 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, it can be determined that the indoor unit is not a target indoor unit and there is no need for self-cleaning.

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

[0048] like Figure 3 As shown, in some examples, S10 may include S13 to S15 to determine the self-cleaning requirement priority 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 a second concentration threshold corresponding to the 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 type of 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 type of 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 in the target indoor unit is greater than or equal to a second concentration threshold corresponding to the type of pollutant, determining that the self-cleaning demand priority of the target indoor unit is the highest level.

[0052] When it is determined that 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 the pollutant, it can be determined that the pollution level of the target indoor unit has reached the most serious level, and the self-cleaning demand priority of the target indoor unit is the highest level.

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

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

[0055] When it is determined that the concentrations of various pollutants in the target indoor unit are less than the second concentration threshold corresponding to the pollutants, it can be determined that the pollution level of the target indoor unit is at a medium level, and the self-cleaning demand priority of the target indoor unit is the second highest level, which is lower than the highest level.

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

[0057] S151: Determine the priority coefficient of the next highest target indoor unit by weighting according to the pollutant concentration and the operating time of the next highest target indoor unit.

[0058] A weighted calculation is performed based on the pollutant concentration and operating time of the next-highest target indoor unit to determine its priority coefficient. This priority coefficient comprehensively considers the pollutant concentration and pollutant weight, the operating time and time weight, and accurately represents the priority of the next-highest target indoor unit. If the priority coefficient of the next-highest target indoor unit is large, it has a higher priority among the next-highest target indoor units; if the priority coefficient of the next-highest target indoor unit is small, it has a lower priority among the next-highest target indoor units.

[0059] S152: Arrange the priority coefficients of the target indoor units at the next highest level in descending order to determine the self-cleaning requirement priority of the target indoor unit among the target indoor units at the next highest level.

[0060] The priority coefficients of the next-highest target indoor units are sorted in descending order to determine the self-cleaning priority of the target indoor units among the next-highest target indoor units. Target indoor units positioned earlier in the ranking have higher priorities and require self-cleaning first among the next-highest target indoor units. Target indoor units positioned later in the ranking have lower priorities and require self-cleaning later among the next-highest target indoor units. It should be noted that the self-cleaning order of the next-highest target indoor units is after that of the highest-ranked target indoor units.

[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 priorities 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, illustratively, S151 may include S1511 to S1512.

[0063] S1511: Obtain the current concentration, initial concentration, and pollutant weight coefficient of each pollutant of the next-highest target indoor unit, as well as the operating time of the next-highest target indoor unit, the operating time of the outdoor unit, and the time weight coefficient.

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

[0065] For example, when one of the pollutants is dust, the current concentration of that pollutant in the next highest target indoor unit is called the current dust concentration, the initial concentration of that pollutant in the next highest target indoor unit is called the initial dust concentration, and the weight coefficient for that pollutant is the dust weight coefficient. For another example, when one of the pollutants is microorganisms, the current concentration of that pollutant in the next highest target indoor unit is called the current microorganism concentration, the initial concentration of that pollutant in the next highest target indoor unit is called the initial microorganism concentration, and the weight coefficient for that pollutant is the microorganism weight coefficient.

[0066] S1512: Determine the priority coefficient of the next-highest target indoor unit based on the current concentration, initial concentration and pollutant weight coefficient of each pollutant of the next-highest target indoor unit, as well as the operating time of the next-highest target indoor unit, the operating time of the outdoor unit and the time weight coefficient.

[0067] For example, the priority coefficient of the next highest target indoor unit may be determined according to the following formula:

[0068]

[0069] Where k 优先级 is the priority coefficient of the next highest target indoor unit, k 粉尘 is the dust weight coefficient, k 时间 is the time weight coefficient, k 微生物 is the microbial weight coefficient, C 当前粉尘 is the current dust concentration of the next highest target indoor unit, C 初始粉尘 is the initial dust concentration of the target indoor unit at the next highest level, C 当前微生物 is the current microbial concentration of the next highest target indoor unit, C 初始微生物 is the initial microbial concentration of the next highest target indoor unit, t 内机 is the operating time of the next highest target indoor unit, t 外机 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 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, and the redundancy coefficient is less than or equal to 1; illustratively, the redundancy coefficient can be less than 1, for example, it can be 0.9, 0.85 or 0.8, etc., which is not limited in this embodiment of the present application. 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 can be calculated and determined by other calculation methods, and the outdoor ambient temperature can be measured by a temperature sensor arranged on the outdoor side.

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

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

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

[0076] S321: Determine a self-cleaning power correction coefficient according to the outdoor ambient temperature.

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

[0078] S322: Determine the upper limit of the number of indoor units that are allowed to 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 highest target indoor unit may be determined according to the following formula:

[0080]

[0081] Where j is the upper limit of the number of indoor units that can self-clean at the same time, k 冗余 is the redundancy coefficient, P 额定 is the rated power of multi-split 1, P 当前 is the current power of the multi-link 1 system, k 自清洁 is the self-cleaning power correction factor, P 自清洁 It is 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: Control the target indoor unit to display self-cleaning information.

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

[0085] S42: Determine whether the multi-connected indoor unit 1 receives a shutdown instruction within a preset time from the time when the target indoor unit displays the self-cleaning information.

[0086] Here, the shutdown command can be input by the user through a control terminal such as a remote control, a control panel, a smart mobile terminal, etc. It should be noted that when the multi-connected device 1 is shut down due to an unexpected power outage, it is considered that the multi-connected device 1 has received the shutdown command.

[0087] S43: In response to determining that the multi-split unit 1 has not received a shutdown instruction within a preset time since the target indoor unit displayed 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 the preset time from the time the target indoor unit displays the self-cleaning message, it means that the multi-split unit 1 continues to operate normally and will not shut down. In this way, when the preset time is reached from the time the target indoor unit displays the self-cleaning message, the target indoor unit can be controlled to perform self-cleaning.

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

[0090] If multi-split unit 1 receives a shutdown command within the preset time from the time the target indoor unit displays the self-cleaning message, it indicates that multi-split unit 1 is about to shut down, or has already shut down before the preset time from the time the target indoor unit displays the self-cleaning message, which may prevent the target indoor unit from completing self-cleaning. In this case, the self-cleaning time of the target indoor unit can be postponed until the multi-split unit 1 is turned on again, forcing the target indoor unit to self-clean when the multi-split unit 1 is turned on again. This prevents the target indoor unit's self-cleaning from being accidentally terminated due to the multi-split unit 1 shutting down, ensuring that the target indoor unit's self-cleaning is completed completely and thoroughly.

[0091] In the second aspect, an embodiment of the present application provides a multi-split self-cleaning control device, the multi-split 1 includes an outdoor unit and multiple indoor units, the multi-split self-cleaning control device includes: a priority determination circuit, configured to determine the target indoor unit among the multiple indoor units and the self-cleaning requirement priority of the target indoor unit, the target indoor unit is an indoor unit with self-cleaning requirements; a self-cleaning sequence determination circuit, configured to determine the self-cleaning sequence of each target indoor unit according to the self-cleaning requirement priority of each target indoor unit and the upper limit of the number of indoor units allowed to self-clean at the same time; a self-cleaning control circuit, configured to control each target indoor unit to perform self-cleaning in sequence according to the self-cleaning sequence.

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

[0093] The processor 10 is connected to the memory 20 and can perform various actions and processes according to the program stored in the memory 20. Specifically, the processor 10 can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 10 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., which can be an X86 architecture or an ARM architecture.

[0094] The memory 20 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is 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 the memory 20 of the method described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0095] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded by the processor 10 to execute the steps in the control method of any of the above embodiments.

[0096] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (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 the present 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 above is a detailed introduction to a multi-split self-cleaning control method, device, multi-split and computer-readable storage medium provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A multi-connected self-cleaning control method, characterized in that: The multi-split system includes an outdoor unit and multiple indoor units, and the multi-split system self-cleaning control method includes: Determining a target indoor unit among the multiple indoor units and a self-cleaning requirement priority of the target indoor unit, wherein the target indoor unit is an indoor unit with a self-cleaning requirement; Determining the upper limit of the number of indoor units that are allowed to self-clean simultaneously based on the actual load demand of the multi-split system; Determining a self-cleaning order for each target indoor unit 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; Control each target indoor unit to perform self-cleaning in sequence according to the self-cleaning sequence.

2. The multi-split self-cleaning control method according to claim 1, characterized in that: Determining a target indoor unit among the multiple indoor units includes: determining whether a concentration of at least one type of pollutant in the indoor unit is greater than or equal to a first concentration threshold corresponding to the type of pollutant or whether an operating time of the indoor unit is greater than or equal to an operating time threshold, the pollutant comprising 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 the type of pollutant or the operating time of the indoor unit is greater than or equal to an operating time threshold, the indoor unit is determined to be a target indoor unit.

3. The multi-split self-cleaning control method according to claim 2, characterized in that: 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 the type of pollutant, the second concentration threshold being 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 a second concentration threshold corresponding to the type of pollutant, determining that the self-cleaning demand priority of the target indoor unit is the highest level; In response to determining that the concentrations of various pollutants in the target indoor unit are all less than the second concentration threshold corresponding to the pollutant type, determining that the self-cleaning demand priority of the target indoor unit is a second-highest priority, and performing the following sorting operation on the target indoor units with the second-highest priority; Determining the priority coefficient of the second-highest target indoor unit by weighting the pollutant concentration and the operating time of the second-highest target indoor unit; The priority coefficients of the target indoor units at the next highest level are arranged in descending order to determine the self-cleaning requirement priority of the target indoor unit among the target indoor units at the next highest level.

4. The multi-split self-cleaning control method according to claim 3, characterized in that: Determining the priority coefficient of the next highest target indoor unit by weighting the pollutant concentration and the operating time of the next highest target indoor unit includes: Obtaining the current concentration, initial concentration, and pollutant weight coefficient of each type of pollutant of the second-highest target indoor unit, as well as the operating time of the second-highest target indoor unit, the operating time of the outdoor unit, and the time weight coefficient; The priority coefficient of the second-highest target indoor unit is determined based on the current concentration, initial concentration and pollutant weight coefficient of each pollutant of the second-highest target indoor unit, as well as the operating time of the second-highest target indoor unit, the operating time of the outdoor unit and the time weight coefficient.

5. The multi-split self-cleaning control method according to claim 1, characterized in that: Based on the actual load requirements of the multi-split system, the upper limit of the number of indoor units allowed to self-clean simultaneously is determined, including: Obtaining the upper limit power and current power of the multi-split unit, the self-cleaning power of the indoor unit, and the outdoor ambient temperature; The upper limit of the number of indoor units allowed to self-clean simultaneously is determined based on the upper limit power and current power of the multi-split system, the self-cleaning power of the indoor units, and the outdoor ambient temperature.

6. The multi-split self-cleaning control method according to claim 5, characterized in that: Determining an upper limit on the number of indoor units that are allowed to self-clean simultaneously based on the upper limit power and current power of the multi-split system, the self-cleaning power of the indoor unit, and the outdoor ambient temperature includes: determining a self-cleaning power correction coefficient according to the outdoor ambient temperature; The upper limit of the number of indoor units allowed to self-clean simultaneously is determined based on the difference between the upper limit power and the current power of the multi-split system, the self-cleaning power of the indoor unit, and the self-cleaning power correction coefficient.

7. The multi-split self-cleaning control method according to claim 1, characterized in that: Controlling each target indoor unit to perform self-cleaning in sequence according to the self-cleaning sequence includes: Controlling the target indoor unit to display self-cleaning information; determining whether the multi-split system receives a shutdown instruction within a preset time from when the target indoor unit displays a self-cleaning message; In response to determining that the multi-split system has not received a shutdown instruction within a preset time since the target indoor unit displayed the self-cleaning information, controlling the target indoor unit to perform self-cleaning; In response to determining that the multi-split system receives a shutdown instruction within a preset time since the target indoor unit displays the self-cleaning information, the target indoor unit is controlled to perform self-cleaning when the multi-split system is turned on again.

8. A multi-connected self-cleaning control device, characterized in that: The multi-split system includes an outdoor unit and multiple indoor units, and the multi-split system self-cleaning control device includes: a priority determination circuit configured to determine a target indoor unit among the plurality of indoor units and a self-cleaning requirement priority of the target indoor unit, the target indoor unit being an indoor unit having a self-cleaning requirement; The self-cleaning sequence determining circuit is configured to determine the self-cleaning sequence of each target indoor unit according to the self-cleaning requirement priority of each target indoor unit and the upper limit of the number of indoor units allowed to self-clean simultaneously; The self-cleaning control circuit is configured to control each target indoor unit to perform self-cleaning in sequence according to the self-cleaning sequence.

9. A multi-link system, characterized in that: include: Outdoor unit; Multiple indoor units; a memory storing a computer program; A processor, wherein when the computer program is executed by the processor, the multi-split self-cleaning control method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the multi-split self-cleaning control method according to any one of claims 1 to 7.

Images