Air conditioner regulation and control method and device, storage medium and air conditioner

Abstract

The invention discloses an air conditioner regulation and control method and device, a storage medium and an air conditioner, and relates to the technical field of air conditioners. The method comprises the steps that when a fitting time point is reached every preset fitting period, a temperature difference time relation curve is obtained through fitting according to historical temperature control data of an indoor unit; according to a temperature difference value between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point, judging whether a capability adjusting condition is met or not; if yes, determining temperature differences corresponding to a plurality of future fitting time points after the fitting time point according to the temperature difference time relation curve, and obtaining predicted temperature differences of the plurality of future fitting time points; and according to the temperature difference of the fitting time point and the predicted temperature difference, the indoor unit capacity adjusting value of the indoor unit is calculated, and the outdoor unit capacity of the outdoor unit is corrected according to the indoor unit capacity adjusting value. Excessive refrigeration and temperature fluctuation of the indoor unit temperature can be effectively avoided, and system energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioning control method, device, storage medium and air conditioning. Background Art

[0002] Taking a multi-split air conditioner as an example, when performing cooling control, a PID (proportional-integral-differential) control method is usually used to calculate the indoor unit capacity requirement, and further adjust the outdoor unit capacity based on the indoor unit capacity requirement.

[0003] However, with the current control method using PID algorithm, it is usually necessary to obtain the temperature response result of the indoor unit before calculating the capacity demand and adjusting the outdoor unit capacity. There are problems of slow response and adjustment lag, which can easily lead to over-cooling and temperature fluctuations in the indoor unit temperature, and high system energy consumption. Summary of the invention

[0004] The embodiment of the present application provides an air conditioning control solution, which can effectively avoid over-cooling and temperature fluctuations in the indoor unit temperature, achieve energy-saving control and effectively reduce the energy consumption of the air conditioning system.

[0005] The embodiments of the present application provide the following technical solutions:

[0006] According to one embodiment of the present application, an air conditioning control method includes: when a fitting time point is reached every predetermined fitting period, a temperature difference time relationship curve between different time points and corresponding temperature differences is obtained by fitting according to the historical temperature control data of the indoor unit, wherein the temperature difference corresponding to each time point refers to the difference between the indoor unit ambient temperature at each time point and the user set temperature; according to the temperature difference difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point, it is judged whether the capacity adjustment condition is met; if so, the temperature difference corresponding to multiple future fitting time points after the fitting time point is determined according to the temperature difference time relationship curve, and the predicted temperature difference of the multiple future fitting time points is obtained; the indoor unit capacity adjustment value of the indoor unit is calculated according to the temperature difference at the fitting time point and the predicted temperature difference, and the outdoor unit capacity of the outdoor unit is corrected according to the indoor unit capacity adjustment value.

[0007] In some embodiments of the present application, after correcting the outdoor unit capacity of the outdoor unit according to the indoor unit capacity adjustment value, the method further includes: determining the indoor unit ambient temperature corresponding to the fitting time point and the previous multiple fitting time points according to the temperature difference time relationship curve; calculating according to the fitting time point and the indoor unit ambient temperature corresponding to the previous multiple fitting time points to obtain a target superheat of the indoor unit; calculating according to the indoor unit target superheat and the actual opening of the indoor unit electronic expansion valve to obtain a change in opening; obtaining a target opening according to the sum of the change in opening and the actual opening, and adjusting the indoor unit electronic expansion valve to the target opening.

[0008] In some embodiments of the present application, the indoor unit capacity adjustment value of the indoor unit is calculated based on the temperature difference at the fitting time point and the predicted temperature difference, including: calculating based on the temperature difference at the fitting time point and the predicted temperature difference to obtain a predicted indoor unit temperature change rate; calculating based on the temperature difference value and the predicted indoor unit temperature change rate to obtain a capacity requirement coefficient; multiplying the indoor unit rated capacity of the indoor unit by the capacity requirement coefficient to obtain the indoor unit capacity adjustment value.

[0009] In some embodiments of the present application, the capacity requirement coefficient is obtained by calculating according to the temperature difference and the predicted indoor unit temperature change rate, including: calculating according to the formula Lq=Lk*(ΔT2-ΔT1)+Ld*(VT), wherein Lq refers to the capacity requirement coefficient, ΔT2-ΔT1 refers to the temperature difference between the temperature difference ΔT2 corresponding to the fitting time point and the temperature difference ΔT1 corresponding to the previous fitting time point, VT refers to the predicted indoor unit temperature change rate, Lk and Ld are respectively predetermined calculation coefficients, Lk is a positive value, and Ld is a negative value.

[0010] In some embodiments of the present application, the calculation based on the temperature difference at the fitting time point and the predicted temperature difference to obtain the predicted indoor unit temperature change rate includes: summing the temperature difference at the fitting time point and the predicted temperature difference at multiple future fitting time points with the user set temperature to obtain the indoor unit ambient temperature at the fitting time point and the predicted indoor unit ambient temperature at each future fitting time point; according to the formula VT=2T n+1 -T n+2 -T n Calculate, where VT refers to the predicted indoor unit temperature change rate, T n Refers to the indoor unit ambient temperature at the fitting time point, T n+1 Refers to the predicted indoor unit ambient temperature at the first future fitting time point after the fitting time point, T n+2 Refers to the predicted indoor unit ambient temperature at the second future fitting time point after the fitting time point.

[0011] In some embodiments of the present application, the indoor unit target superheat degree is obtained by calculating the indoor unit environment temperature corresponding to the fitting time point and the first plurality of fitting time points, including: according to the formula ΔPEXV=Kt(T n -T n-1 )+Lp(T n -T set )+Lv(T n -2T n-1 +T n-2 ) is calculated, where ΔPEXV refers to the indoor unit target superheat, T n Refers to the indoor unit ambient temperature at the fitting time point, T n-1 Refers to the indoor unit ambient temperature at the first fitting time point before the fitting time point, T n-2 Refers to the indoor unit ambient temperature at the second fitting time point before the fitting time point, T set Refers to the user-set temperature, Kt, Lp, and Lv are respectively the predetermined calculation coefficients.

[0012] In some embodiments of the present application, the determination of whether the capacity adjustment condition is met is based on the temperature difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point, including: if the temperature difference is less than a first threshold, the outdoor unit has been running for more than a predetermined time and the temperature difference corresponding to the fitting time point is less than a second threshold, then it is determined that the adjustment condition for reducing the capacity of the outdoor unit is met; if the temperature difference is less than zero for a predetermined number of consecutive fitting cycles, then it is determined that the adjustment condition for increasing the capacity of the outdoor unit is met.

[0013] According to one embodiment of the present application, an air conditioning control device includes: a memory storing a computer program; and a processor reading the computer program stored in the memory to execute the method described in any embodiment of the present application.

[0014] According to another embodiment of the present application, a storage medium stores a computer program thereon, and when the computer program is executed by a processor of an air conditioning control device, the air conditioning control device executes the method described in the embodiment of the present application.

[0015] According to another embodiment of the present application, an air conditioner may include the air conditioning control device described in the embodiment of the present application and other air conditioning modules.

[0016] According to another embodiment of the present application, a computer program product or a computer program includes computer instructions stored in a computer-readable storage medium. A processor of an air conditioning control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the air conditioning control device executes the methods provided in various optional implementations described in the embodiments of the present application.

[0017] In an embodiment of the present application, when a fitting time point is reached every predetermined fitting period, a temperature difference time relationship curve between different time points and corresponding temperature differences is obtained by fitting according to the historical temperature control data of the indoor unit, wherein the temperature difference corresponding to each time point refers to the difference between the ambient temperature of the indoor unit at each time point and the temperature set by the user; based on the temperature difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point, it is judged whether the capacity adjustment condition is met; if so, the temperature difference corresponding to multiple future fitting time points after the fitting time point is determined according to the temperature difference time relationship curve, and the predicted temperature difference of the multiple future fitting time points is obtained; the indoor unit capacity adjustment value of the indoor unit is calculated according to the temperature difference at the fitting time point and the predicted temperature difference, and the outdoor unit capacity of the outdoor unit is corrected according to the indoor unit capacity adjustment value.

[0018] In this way, by predicting the indoor unit capacity adjustment value reflecting the indoor unit capacity demand in advance, the outdoor unit capacity of the outdoor unit can be corrected in advance, thereby effectively avoiding over-cooling and temperature fluctuation of the indoor unit temperature. At the same time, the outdoor unit capacity can be adjusted to a more reasonable capacity in advance, and energy-saving control can be achieved to effectively reduce the energy consumption of the air-conditioning system. In particular, for multi-split air conditioners, over-cooling and temperature fluctuation of the indoor unit temperature can be effectively avoided and the system energy consumption can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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.

[0020] Figure 1 A flow chart of an air conditioning control method according to an embodiment of the present application is shown.

[0021] Figure 2 A schematic diagram of a temperature difference-time relationship curve according to an embodiment of the present application is shown.

[0022] Figure 3 A solenoid valve opening adjustment flow chart according to an embodiment of the present application is shown.

[0023] Figure 4 A block diagram of an air conditioning control device according to an embodiment of the present application is shown.

[0024] Figure 5 A block diagram of an air conditioner according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and are not intended to limit the present disclosure. In addition, the embodiments provided below are partial embodiments for implementing the present disclosure, rather than providing all embodiments for implementing the present disclosure. In the absence of conflict, the technical solutions recorded in the embodiments of the present disclosure can be implemented in any combination.

[0026] It should be noted that, in the embodiments of the present disclosure, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a method or apparatus including a series of elements includes not only the elements explicitly recorded, but also includes other elements not explicitly listed, or also includes elements inherent to the implementation of the method or apparatus. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other related elements in the method or apparatus including the element (such as a step in the method or a unit in the apparatus, for example, a unit may be a part of a circuit, a part of a processor, a part of a program or software, etc.).

[0027] For example, the air conditioning control method provided in the embodiment of the present disclosure includes a series of steps, but the air conditioning control method provided in the embodiment of the present disclosure is not limited to the recorded steps. Similarly, the air conditioning control device provided in the embodiment of the present disclosure includes a series of units, but the device provided in the embodiment of the present disclosure is not limited to including the units explicitly recorded, and may also include units that need to be set to obtain relevant information or perform processing based on information.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0029] It is understandable that in the specific implementation of this application, relevant data is involved. When the embodiments in this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0030] Figure 1The flowchart of the air conditioning control method according to an embodiment of the present application is schematically shown. The execution subject of the air conditioning control method can be any control device with processing capabilities, such as the air conditioner itself, a mobile phone, a computer, a smart watch, and other home appliances.

[0031] In a specific embodiment of the present application, the control device serving as the executor of the air conditioning control method is specifically the air conditioner itself, and the air conditioner specifically performs defrost control through its controller. The air conditioner may be a multi-split air conditioner, which may include an outdoor air conditioner and multiple indoor units.

[0032] like Figure 1 As shown, the air conditioning control method may include steps S110 to S140.

[0033] Step S110, when the fitting time point is reached every predetermined fitting cycle, a temperature difference time relationship curve between different time points and corresponding temperature differences is obtained by fitting according to the historical temperature control data of the indoor unit, wherein the temperature difference corresponding to each time point refers to the difference between the indoor unit ambient temperature at each time point and the user set temperature;

[0034] Step S120, judging whether the capacity adjustment condition is met according to the temperature difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point;

[0035] Step S130: If yes, determine the temperature differences corresponding to multiple future fitting time points after the fitting time point according to the temperature difference time relationship curve, and obtain the predicted temperature differences of the multiple future fitting time points;

[0036] Step S140, calculating the indoor unit capacity adjustment value of the indoor unit according to the temperature difference at the fitting time point and the predicted temperature difference, and correcting the outdoor unit capacity of the outdoor unit according to the indoor unit capacity adjustment value.

[0037] When the indoor unit is turned on, the initial rated capacity requirement of the indoor unit (i.e., the rated capacity of the indoor unit) is sent to the outdoor unit, so that the outdoor unit outputs the corresponding outdoor unit capacity (e.g., compressor frequency) according to the rated capacity of the indoor unit, thereby allowing the air conditioner to perform the cooling process. When the air conditioner runs for a predetermined time (e.g., 10 minutes), the air conditioner can enter the intelligent energy-saving control mode. After entering the intelligent energy-saving control mode, when the fitting time point is reached every predetermined fitting cycle, the temperature difference time relationship curve of different time points and corresponding temperature differences is obtained according to the historical temperature control data of the indoor unit, wherein the temperature difference corresponding to each time point refers to the difference between the indoor unit ambient temperature at each time point and the user-set temperature. Among them, the indoor unit ambient temperature can be the indoor unit return air temperature or other temperature that can reflect the indoor ambient temperature, and the user-set temperature is the target temperature that the user wants to achieve for the indoor environment set by the indoor unit.

[0038] For example, the first fitting time point may be the time point when the air conditioner reaches the predetermined running time of 10 minutes. At the first fitting time point, the first temperature difference time relationship curve can be fitted based on the historical temperature control data in the previous 10 minutes; then, if the predetermined fitting cycle is 1 minute, when the air conditioner continues to run for 1 minute and reaches the second fitting time point, the second temperature difference time relationship curve is fitted based on the historical temperature control data in the previous 10 minutes and the current 1 minute, which is a total of 11 minutes; then, when the air conditioner continues to run for 1 minute and reaches the third fitting time point, the third temperature difference time relationship curve is fitted based on the historical temperature control data in the previous 11 minutes and the current 1 minute, which is a total of 12 minutes. By analogy, the temperature difference time relationship curve can be continuously fitted at intervals of the predetermined fitting cycle.

[0039] From the temperature difference time relationship curve, the temperature difference ΔT2 (ΔT2 = T n -T set , where T n That is, the indoor unit ambient temperature at the current fitting time point, T set That is, the user sets the temperature), and can determine the temperature difference ΔT1 (ΔT1 = T n-1 -T set , where T n-1 That is, the indoor unit ambient temperature at the previous fitting time point, T set That is, the user set temperature), the temperature difference is ΔT2-ΔT1. This temperature difference can accurately reflect the change of the indoor unit ambient temperature, so it can be used to accurately determine whether the capacity adjustment conditions are met. If the capacity adjustment conditions are met, the outdoor unit capacity needs to be adjusted. For example, refer to Figure 2 , the temperature difference ΔT2 and the temperature difference ΔT1 can be determined from the temperature difference time relationship curve 210 .

[0040] If the capacity adjustment conditions are met, the temperature differences corresponding to multiple future fitting time points after the fitting time point can be determined according to the temperature difference time relationship curve to obtain the predicted temperature differences at multiple future fitting time points. The indoor unit capacity adjustment value reflecting the indoor unit capacity demand can be calculated and predicted in advance according to the temperature difference at the fitting time point and the predicted temperature difference at multiple future fitting time points. According to the indoor unit capacity adjustment value, the outdoor unit capacity (such as compressor frequency and / or fan speed, etc.) of the outdoor unit can be accurately corrected in advance to a capacity value that matches the indoor unit capacity adjustment value.

[0041] In this way, by predicting the indoor unit capacity adjustment value reflecting the indoor unit capacity demand in advance, the outdoor unit capacity of the outdoor unit can be corrected in advance, thereby effectively avoiding over-cooling and temperature fluctuation of the indoor unit temperature. At the same time, the outdoor unit capacity can be adjusted to a more reasonable capacity in advance, and energy-saving control can be achieved to effectively reduce the energy consumption of the air-conditioning system. In particular, for multi-split air conditioners, over-cooling and temperature fluctuation of the indoor unit temperature can be effectively avoided and the system energy consumption can be reduced.

[0042] Described below Figure 1 When air conditioning is controlled in the embodiment, further optional specific embodiments are provided for each step performed.

[0043] In one embodiment, the temperature difference time relationship curve between different time points and corresponding temperature differences is obtained by fitting the historical temperature control data of the indoor unit, which may specifically include: using a curve fitting regression function model: y=q0e (-x / a) , the historical temperature control data are fitted to obtain the temperature difference time relationship curve between different time points and corresponding temperature differences, where x refers to the time point, y refers to the temperature difference, e is a natural number, and a and q0 are predetermined coefficients.

[0044] It is understandable that in other embodiments, other optional curve fitting regression function models may be used to fit the historical temperature control data to obtain a temperature difference time relationship curve between different time points and corresponding temperature differences.

[0045] Further, in one embodiment, judging whether the capacity adjustment condition is met according to the temperature difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point may specifically include:

[0046] If the temperature difference is less than a first threshold, the outdoor unit runs for more than a predetermined time and the temperature difference corresponding to the fitting time point is less than a second threshold, it is judged that the adjustment conditions for reducing the capacity of the outdoor unit are met; if the temperature difference is less than zero for a predetermined number of consecutive fitting cycles, it is judged that the adjustment conditions for increasing the capacity of the outdoor unit are met.

[0047] The capacity adjustment condition may include an adjustment condition for reducing the capacity of the outdoor unit and an adjustment condition for increasing the capacity of the outdoor unit.

[0048] If the temperature difference (ΔT2-ΔT1) is less than the first threshold (e.g., 0.2), it means that the indoor ambient temperature has decreased, indicating that the current outdoor unit capacity output meets the requirements. In order to achieve energy saving of the air conditioning system, the outdoor unit capacity output can be reduced. Furthermore, if the outdoor unit runs for more than the predetermined time and the temperature difference (T n -T set) is less than the second threshold value (e.g., 0.5), indicating that the outdoor unit capacity output meets the indoor unit cooling demand. At this time, it is determined that the adjustment conditions for reducing the outdoor unit capacity are met, and the outdoor unit capacity can be reliably adjusted and reduced in subsequent steps, effectively ensuring the reliability of energy-saving control.

[0049] If the temperature difference under a predetermined number of consecutive fitting cycles (for example, 5) is less than zero, it means that the temperature of the indoor unit has risen and the capacity output needs to be increased to meet the user's comfort requirements. At this time, it is judged that the adjustment conditions for increasing the capacity of the outdoor unit are met, and the capacity of the outdoor unit can be reliably adjusted in subsequent steps.

[0050] Further, in an embodiment, the calculating the indoor unit capacity adjustment value of the indoor unit according to the temperature difference at the fitting time point and the predicted temperature difference may include:

[0051] Calculate based on the temperature difference at the fitting time point and the predicted temperature difference to obtain the predicted indoor unit temperature change rate; calculate based on the temperature difference value and the predicted indoor unit temperature change rate to obtain the capacity demand coefficient; multiply the indoor unit rated capacity of the indoor unit by the capacity demand coefficient to obtain the indoor unit capacity adjustment value.

[0052] The predicted indoor unit temperature change rate can be calculated based on the temperature difference at the fitting time point and the predicted temperature difference. The predicted indoor unit temperature change rate is the predicted change rate of the indoor unit ambient temperature in the subsequent time. The predicted indoor unit temperature change rate can reflect whether the cooling speed of the indoor unit ambient temperature in the subsequent time is faster.

[0053] The capacity requirement coefficient is calculated based on the temperature difference and the predicted indoor unit temperature change rate. The indoor unit rated capacity of the indoor unit is multiplied by the capacity requirement coefficient to accurately predict the indoor unit capacity adjustment value that reflects the indoor unit capacity requirement in the subsequent time.

[0054] The capacity adjustment conditions may include adjustment conditions for reducing the capacity of the outdoor unit and adjustment conditions for increasing the capacity of the outdoor unit. Under different adjustment conditions, the corresponding indoor unit capacity adjustment value may be calculated. According to the indoor unit capacity adjustment value, the outdoor unit capacity may be corrected under the corresponding adjustment conditions, thereby reducing the capacity of the outdoor unit or increasing the capacity of the outdoor unit.

[0055] In one embodiment, the calculating according to the temperature difference at the fitting time point and the predicted temperature difference to obtain the predicted indoor unit temperature change speed may include:

[0056] The temperature difference at the fitting time point and the predicted temperature difference at the multiple future fitting time points are summed with the user set temperature to obtain the indoor unit ambient temperature at the fitting time point and the predicted indoor unit ambient temperature at each future fitting time point; according to the formula VT = 2T n+1 -T n+2 -T n Calculate, where VT refers to the predicted indoor unit temperature change rate, T n Refers to the indoor unit ambient temperature at the fitting time point, T n+1 Refers to the predicted indoor unit ambient temperature at the first future fitting time point after the fitting time point, T n+2 Refers to the predicted indoor unit ambient temperature at the second future fitting time point after the fitting time point.

[0057] The temperature difference at the fitting time point (ΔT2 = T n -T set ) and user set temperature (T set ) and then the indoor unit ambient temperature (T n ), multiple future fitting time points can be the first future fitting time point and the second future fitting time point after the fitting time point, and the predicted temperature difference (T n+1 -T set ) and user set temperature (T set ) and then the predicted indoor unit ambient temperature (T n+1 ), the predicted temperature difference at the second future fitting time point (T n+2 -T set ) and user set temperature (T set ) and then the predicted indoor unit ambient temperature (T n+2 ).

[0058] According to the formula VT=2T n+1 -T n+2 -T n The predicted indoor unit temperature change rate VT is calculated. The applicant has found that the predicted indoor unit temperature change rate VT calculated according to the formula is used for calculation in subsequent steps, which can further effectively improve the accuracy of the calculated indoor unit capacity adjustment value in reflecting the indoor unit capacity demand in subsequent time.

[0059] It is understandable that in other embodiments, the predicted indoor unit ambient temperature at other numbers (eg, 3 or 4, etc.) of future fitting time points and other optional calculation formulas may be used to calculate the predicted indoor unit temperature change rate.

[0060] In one embodiment, the calculation based on the temperature difference and the predicted indoor unit temperature change speed to obtain the capacity demand coefficient may specifically include:

[0061] The calculation is performed according to the formula Lq=Lk*(ΔT2-ΔT1)+Ld*(VT), wherein Lq refers to the capacity demand coefficient, ΔT2-ΔT1 refers to the temperature difference between the temperature difference ΔT2 corresponding to the fitting time point and the temperature difference ΔT1 corresponding to the previous fitting time point, VT refers to the predicted temperature change rate of the indoor unit, Lk and Ld are respectively predetermined calculation coefficients, Lk is a positive value, and Ld is a negative value.

[0062] like Figure 2 As shown, the capacity demand coefficient Lq is calculated according to the formula Lq = Lk*(ΔT2-ΔT1)+Ld*(VT). The corresponding relationship between the capacity demand coefficient Lq and the temperature difference and time is as follows Figure 2 As shown in the middle curve 220, the applicant has found that multiplying the capacity demand coefficient Lq calculated according to the formula by the rated capacity of the indoor unit can further effectively improve the accuracy of the calculated indoor unit capacity adjustment value in reflecting the indoor unit capacity demand at a subsequent time.

[0063] It is understandable that in other embodiments, other optional calculation formulas may be used to calculate the capacity requirement coefficient.

[0064] Through the above-mentioned embodiments, when the capacity adjustment conditions (adjustment conditions for reducing the capacity of the outdoor unit or adjustment conditions for increasing the capacity of the outdoor unit) are met, the outdoor unit capacity of the outdoor unit can be corrected in advance according to the predicted indoor unit capacity adjustment value. In subsequent embodiments, while correcting the outdoor unit capacity of the outdoor unit, the opening of the indoor unit electronic expansion valve can be further adjusted according to the temperature difference linkage, further realizing the on-demand allocation of the refrigerant amount, and further improving the user comfort and the unit operation energy efficiency.

[0065] Specifically, in one embodiment, refer to Figure 3 After correcting the outdoor unit capacity of the outdoor unit according to the indoor unit capacity adjustment value, the method may further include: step S310, determining the indoor unit ambient temperature corresponding to the fitting time point and the previous multiple fitting time points according to the temperature difference time relationship curve; step S320, calculating according to the fitting time point and the indoor unit ambient temperature corresponding to the previous multiple fitting time points to obtain the indoor unit target superheat; step S330, calculating according to the indoor unit target superheat and the actual opening of the indoor unit electronic expansion valve to obtain the opening change; step S340, obtaining the target opening according to the sum of the opening change and the actual opening, and adjusting the indoor unit electronic expansion valve to the target opening.

[0066] The temperature difference corresponding to the fitting time point and the previous multiple fitting time points before the fitting time point is determined according to the temperature difference time relationship curve, and the temperature difference is summed with the user set temperature to obtain the indoor unit ambient temperature corresponding to the fitting time point and the previous multiple fitting time points.

[0067] The indoor unit target superheat is calculated based on the indoor unit ambient temperature corresponding to the fitting time point and the previous multiple fitting time points; the opening change is calculated based on the indoor unit target superheat and the actual opening of the indoor unit electronic expansion valve, the target opening is obtained based on the sum of the opening change and the actual opening, and the indoor unit electronic expansion valve is adjusted to the target opening, so that the opening of the indoor unit electronic expansion valve can be reliably adjusted according to the temperature difference linkage.

[0068] Further, in an embodiment, the calculation based on the indoor unit ambient temperature corresponding to the fitting time point and the first plurality of fitting time points to obtain the indoor unit target superheat degree may specifically include:

[0069] According to the formula ΔPEXV=Kt(T n -T n-1 )+Lp(T n -T set )+Lv(T n -2T n-1 +T n-2 ) is calculated, where ΔPEXV refers to the indoor unit target superheat, T n Refers to the indoor unit ambient temperature at the fitting time point, T n-1 Refers to the indoor unit ambient temperature at the first fitting time point before the fitting time point, T n-2 Refers to the indoor unit ambient temperature at the second fitting time point before the fitting time point, T set Refers to the user-set temperature, Kt, Lp, and Lv are respectively the predetermined calculation coefficients.

[0070] According to the formula ΔPEXV=Kt(T n -T n-1 )+Lp(T n -T set )+Lv(T n -2T n-1 +T n-2 ) is calculated to obtain the indoor unit target superheat ΔPEXV. The applicant found that the indoor unit target superheat ΔPEXV calculated according to the formula is used to calculate the opening change, which can further effectively adjust the opening of the indoor unit electronic expansion valve.

[0071] It can be understood that in other embodiments, other optional formulas can be used to calculate the indoor unit target superheat degree according to the indoor unit ambient temperature corresponding to the fitting time point and the previous multiple fitting time points.

[0072] In addition, the embodiment of the present application also provides an air conditioning control device, which can be applied to control equipment. Figure 4 As shown, Figure 4 An air conditioning control device according to an embodiment of the present application is shown. Specifically, the air conditioning control device 400 may include a processor 401 of one or more processing cores and a memory 402 of one or more computer-readable storage media.

[0073] The processor 401 can load the executable files corresponding to the processes of one or more computer programs into the memory 402 according to the instructions, and the processor 401 can run the computer programs stored in the memory 402, so as to realize the various functions in the embodiments of the aforementioned air conditioning control method of this application.

[0074] For example, the processor 401 may execute the following steps: when the fitting time point is reached every predetermined fitting period, a temperature difference time relationship curve between different time points and corresponding temperature differences is obtained by fitting according to the historical temperature control data of the indoor unit, wherein the temperature difference corresponding to each time point refers to the difference between the ambient temperature of the indoor unit at each time point and the temperature set by the user; based on the temperature difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point, it is judged whether the capacity adjustment condition is met; if so, the temperature difference corresponding to multiple future fitting time points after the fitting time point is determined according to the temperature difference time relationship curve, and the predicted temperature difference of the multiple future fitting time points is obtained; the indoor unit capacity adjustment value of the indoor unit is calculated according to the temperature difference at the fitting time point and the predicted temperature difference, and the outdoor unit capacity of the outdoor unit is corrected according to the indoor unit capacity adjustment value.

[0075] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0076] To this end, an embodiment of the present application further provides a storage medium, in which a computer program is stored. The computer program can be loaded by a processor to execute the steps in any method provided in the embodiment of the present application.

[0077] The storage medium may be a computer-readable storage medium, and the storage medium may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0078] Since the computer program stored in the storage medium can execute the steps in any method provided in the embodiments of the present application, the beneficial effects that can be achieved by the method provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0079] In addition, see Figure 5 The embodiment of the present application also provides an air conditioner, the air conditioner 500 may include Figure 4 The air conditioning control device 400 and other air conditioning modules 600 (such as indoor units and outdoor units, etc.) are shown.

[0080] According to another embodiment of the present application, a computer program product or a computer program includes computer instructions stored in a computer-readable storage medium. A processor of an air conditioning control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the air conditioning control device executes the methods provided in various optional implementations described in the embodiments of the present application.

[0081] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

[0082] It should be understood that the present application is not limited to the embodiments that have been described above and shown in the accompanying drawings, but various modifications and changes may be made without departing from the scope thereof.

Claims

1. An air conditioning control method, characterized in that: include: When the fitting time point is reached every predetermined fitting cycle, the temperature difference time relationship curve between different time points and corresponding temperature differences is obtained by fitting according to the historical temperature control data of the indoor unit, wherein the temperature difference corresponding to each time point refers to the difference between the indoor unit ambient temperature at each time point and the user set temperature; Determining whether a capacity adjustment condition is met according to a temperature difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point; If yes, then determining the temperature differences corresponding to multiple future fitting time points after the fitting time point according to the temperature difference time relationship curve, and obtaining the predicted temperature differences of the multiple future fitting time points; The indoor unit capacity adjustment value of the indoor unit is calculated according to the temperature difference at the fitting time point and the predicted temperature difference, and the outdoor unit capacity of the outdoor unit is corrected according to the indoor unit capacity adjustment value.

2. The method according to claim 1, characterized in that After correcting the outdoor unit capacity of the outdoor unit according to the indoor unit capacity adjustment value, the method further includes: Determine the indoor unit environment temperature corresponding to the fitting time point and the first plurality of fitting time points according to the temperature difference time relationship curve; Calculating according to the indoor unit ambient temperature corresponding to the fitting time point and the first plurality of fitting time points to obtain a target superheat degree of the indoor unit; Calculating according to the indoor unit target superheat and the actual opening of the indoor unit electronic expansion valve to obtain the opening change; A target opening is obtained according to the sum of the opening change and the actual opening, and the indoor unit electronic expansion valve is adjusted to the target opening.

3. The method according to claim 1, characterized in that The calculating the indoor unit capacity adjustment value of the indoor unit according to the temperature difference at the fitting time point and the predicted temperature difference includes: Calculating based on the temperature difference at the fitting time point and the predicted temperature difference to obtain a predicted indoor unit temperature change rate; Calculating according to the temperature difference and the predicted indoor unit temperature change rate to obtain a capacity demand coefficient; The indoor unit capacity adjustment value is obtained by multiplying the indoor unit rated capacity of the indoor unit by the capacity requirement coefficient.

4. The method according to claim 3, characterized in that The calculating according to the temperature difference and the predicted indoor unit temperature change speed to obtain the capacity demand coefficient includes: The calculation is performed according to the formula Lq=Lk*(ΔT2-ΔT1)+Ld*(VT), wherein Lq refers to the capacity demand coefficient, ΔT2-ΔT1 refers to the temperature difference between the temperature difference ΔT2 corresponding to the fitting time point and the temperature difference ΔT1 corresponding to the previous fitting time point, VT refers to the predicted temperature change rate of the indoor unit, Lk and Ld are respectively predetermined calculation coefficients, Lk is a positive value, and Ld is a negative value.

5. The method according to claim 3, characterized in that: The calculating according to the temperature difference at the fitting time point and the predicted temperature difference to obtain the predicted indoor unit temperature change speed includes: The temperature difference at the fitting time point and the predicted temperature differences at the multiple future fitting time points are summed with the user set temperature to obtain the indoor unit ambient temperature at the fitting time point and the predicted indoor unit ambient temperature at each future fitting time point; According to the formula VT=2T n+1 -T n+2 -T n Calculate, where VT refers to the predicted indoor unit temperature change rate, T n Refers to the indoor unit ambient temperature at the fitting time point, T n+1 Refers to the predicted indoor unit ambient temperature at the first future fitting time point after the fitting time point, T n+2 Refers to the predicted indoor unit ambient temperature at the second future fitting time point after the fitting time point.

6. The method according to claim 2, characterized in that The calculating according to the indoor unit ambient temperature corresponding to the fitting time point and the first plurality of fitting time points to obtain the indoor unit target superheat degree includes: According to the formula ΔPEXV=Kt(T n -T n-1 )+Lp(T n -T set )+Lv(T n -2T n-1 +T n-2 ) is calculated, where ΔPEXV refers to the indoor unit target superheat, T n Refers to the indoor unit ambient temperature at the fitting time point, T n-1 Refers to the indoor unit ambient temperature at the first fitting time point before the fitting time point, T n-2 Refers to the indoor unit ambient temperature at the second fitting time point before the fitting time point, T set Refers to the user-set temperature, Kt, Lp, and Lv are respectively the predetermined calculation coefficients.

7. The method according to any one of claims 1 to 6, characterized in that: The determining whether the capacity adjustment condition is met according to the temperature difference between the temperature difference corresponding to the fitting time point and the temperature difference corresponding to the previous fitting time point includes: If the temperature difference is less than a first threshold, the outdoor unit has been running for more than a predetermined time, and the temperature difference corresponding to the fitting time point is less than a second threshold, it is determined that the adjustment condition for reducing the capacity of the outdoor unit is met; If the temperature difference value in a predetermined number of consecutive fitting cycles is less than zero, it is determined that the adjustment condition for improving the capacity of the outdoor unit is met.

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

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

10. An air conditioner, characterized in that: It includes the air conditioning control device as claimed in claim 8 and other air conditioning modules.

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