Control method and device of multi-split equipment, multi-split equipment and storage medium

Abstract

The invention relates to the technical field of multi-split equipment, in particular to a multi-split equipment control method and device, multi-split equipment and a storage medium. The multi-split equipment control method comprises the steps that the operation energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve and the target operation frequency of a compressor are obtained; according to the target opening degree of each electronic expansion valve and the target operation frequency of the compressor, the required frequency of each indoor unit is obtained through calculation; the required frequency of each indoor unit is corrected according to the operation energy efficiency attenuation coefficient of each indoor unit, the corrected target operation frequency of the compressor and the corrected target opening degree of each electronic expansion valve are determined according to the corrected required frequency of each indoor unit, and the multi-split equipment is controlled to operate, so that the heat exchange requirements of the areas where the different indoor units are located are met, and the heat exchange efficiency of the multi-split equipment is improved. And the operation of the multi-split equipment can meet the use requirements of users.

Description

Technical Field

[0001] This invention relates to the field of multi-split air conditioning technology, and more particularly to control methods, devices, multi-split air conditioning equipment, and storage media for multi-split air conditioning equipment. Background Technology

[0002] Multi-split air conditioning systems exchange indoor and outdoor air during operation. To prevent dust from the outdoor air from entering the room during this process, filters are usually installed at the indoor and outdoor air vents. However, as the multi-split air conditioning system is used for a longer period of time, dust can clog the filter screens, affecting the normal cooling or heating air supply of the system.

[0003] In summary, the degree of filter clogging in multi-split air conditioning systems can affect the heat exchange requirements of different indoor units during operation, thus impacting normal user experience.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a control method, device, multi-split air conditioning unit, and storage medium, aiming to solve the technical problem that existing multi-split air conditioning units do not consider the impact of filter blockage in different rooms on heat exchange capacity, thus affecting the user experience.

[0006] To achieve the above objectives, the present invention provides a control method for a multi-split air conditioning system, the multi-split air conditioning system including an outdoor unit and at least two indoor units, the outdoor unit including at least one compressor, and each indoor unit correspondingly provided with an electronic expansion valve for controlling refrigerant flow;

[0007] The control method for the multi-unit air conditioning system includes:

[0008] Obtain the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor;

[0009] The required frequency of each indoor unit is calculated based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor.

[0010] Based on the operating energy efficiency attenuation coefficient of each indoor unit, the required frequency of each indoor unit is adjusted to obtain the adjusted required frequency of each indoor unit.

[0011] Based on the correction requirement frequency of each indoor unit, determine the correction target operating frequency of the compressor and the correction target opening degree of each electronic expansion valve;

[0012] The operation of the multi-unit equipment is controlled based on the corrected target opening degree and the corrected target operating frequency.

[0013] Optionally, the step of calculating the required frequency of each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency includes:

[0014] Based on the target opening degree of each electronic expansion valve, the percentage of the target opening degree of each electronic expansion valve is calculated.

[0015] The required frequency of each indoor unit is calculated based on the target opening percentage and the target operating frequency of the compressor.

[0016] Optionally, the step of calculating the opening percentage of each electronic expansion valve based on its target opening degree includes:

[0017] Determine the total target opening based on the target opening of each electronic expansion valve;

[0018] The target opening percentage of each electronic expansion valve is determined based on the target opening degree of each electronic expansion valve and the sum of the target opening degrees.

[0019] Optionally, determining the target operating frequency of the compressor based on the correction requirement frequency of each indoor unit includes:

[0020] The sum of the correction requirement frequencies of each indoor unit is taken as the correction target operating frequency of the compressor.

[0021] Optionally, determining the target opening degree of each electronic expansion valve based on the correction requirement frequency of each indoor unit includes:

[0022] Based on the correction requirement frequency of each indoor unit, the target opening degree of each electronic expansion valve is corrected to obtain the corrected target opening degree of each electronic expansion valve.

[0023] Optionally, the step of adjusting the target opening of each electronic expansion valve according to the adjustment requirement frequency of each indoor unit to obtain the adjusted target opening of each electronic expansion valve includes:

[0024] Based on the correction requirement frequency of each indoor unit and the correction target operating frequency of the compressor, determine the correction target opening percentage of each electronic expansion valve;

[0025] The corrected target opening degree of each electronic expansion valve is calculated based on the corrected target opening degree ratio and the sum of the target opening degrees.

[0026] Optionally, after controlling the operation of the multi-unit air conditioning system based on the corrected target opening degree and the corrected target operating frequency, the method further includes:

[0027] After cleaning the multi-split air conditioning unit, the operating energy efficiency attenuation coefficient of each indoor unit is reset based on the standard operating energy efficiency attenuation coefficient;

[0028] In each preset cycle, the steps of obtaining the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor are repeated.

[0029] Furthermore, to achieve the above objectives, the present invention also proposes a control device for a multi-split air conditioning unit, the control device comprising:

[0030] The acquisition module is used to acquire the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor;

[0031] The calculation module is used to calculate the required frequency of each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor.

[0032] The correction module is used to correct the required frequency of each indoor unit based on the operating energy efficiency attenuation coefficient of each indoor unit, so as to obtain the corrected required frequency of each indoor unit.

[0033] The correction module is used to determine the target operating frequency of the compressor and the target opening degree of each electronic expansion valve based on the correction requirement frequency of each indoor unit.

[0034] The control module is used to control the operation of the multi-unit equipment based on the corrected target opening degree and the corrected target operating frequency.

[0035] Furthermore, to achieve the above objectives, the present invention also proposes a multi-unit air conditioning device, the multi-unit air conditioning device comprising: a memory, a processor, and a control program for the multi-unit air conditioning device stored in the memory and executable on the processor, the control program for the multi-unit air conditioning device being configured to implement the steps of the control method for the multi-unit air conditioning device as described above.

[0036] Furthermore, to achieve the above objectives, the present invention also proposes a storage medium storing a control program for a multi-unit air conditioning system, wherein the control program for the multi-unit air conditioning system, when executed by a processor, implements the steps of the control method for the multi-unit air conditioning system as described above.

[0037] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the control method for multi-unit equipment as described above.

[0038] The present application proposes one or more technical solutions, which have at least the following technical effects: The present application obtains the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor; calculates the required frequency of each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor; corrects the required frequency of each indoor unit based on the operating energy efficiency attenuation coefficient of each indoor unit to obtain the corrected required frequency of each indoor unit; determines the corrected target operating frequency of the compressor and the corrected target opening degree of each electronic expansion valve based on the corrected required frequency of each indoor unit; and controls the operation of the multi-split air conditioning unit based on the corrected target opening degree and the corrected target operating frequency. Specifically, the present application corrects the required frequency of each indoor unit through the operating energy efficiency attenuation coefficient of each indoor unit, and then calculates and corrects the operating frequency of the electronic expansion valve and compressor in each indoor unit based on the corrected required frequency, thereby adapting to the heat exchange requirements of different indoor unit areas, so that the operation of the multi-split air conditioning unit can meet the user's needs, avoiding the technical problem in the prior art that the operating energy efficiency attenuation coefficient of different room indoor units is not considered in the operation of multi-split air conditioning units, which affects the user experience. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart illustrating the first embodiment of the control method for multi-unit air conditioning equipment of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of a multi-split air conditioning unit, which is an embodiment of the control method for multi-split air conditioning units of the present invention.

[0043] Figure 3 This is a flowchart illustrating the second embodiment of the control method for multi-unit air conditioning equipment of the present invention;

[0044] Figure 4 This is a structural block diagram of the control device for the multi-unit air conditioning system of the present invention in a first embodiment;

[0045] Figure 5 This is a schematic diagram of the structure of a multi-unit device in the hardware operating environment involved in the embodiments of the present invention.

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0048] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0049] Based on this, embodiments of the present invention provide a control method for multi-unit air conditioning systems, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of a control method for a multi-unit air conditioning system according to the present invention.

[0050] In this embodiment, the control method for the multi-unit air conditioning system includes the following steps:

[0051] Step S10: Obtain the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor.

[0052] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as an air conditioner, a multi-split air conditioning unit, and a fresh air system, or an electronic device or multi-split air conditioning unit capable of performing the above functions. The following description uses a multi-split air conditioning unit as an example to illustrate this embodiment and the subsequent embodiments.

[0053] It is worth noting that, for reference Figure 2 , Figure 2 This is a schematic diagram of a multi-split air conditioning system in this embodiment. The multi-split air conditioning system includes an outdoor unit A and at least two indoor units B, namely B1 and B2. The outdoor unit A includes at least one compressor 1, which is used to provide high-temperature refrigerant during the operation of the multi-split air conditioning system, thereby achieving heat exchange between the indoor and outdoor environments. Each indoor unit B is provided with at least one electronic expansion valve 2 for controlling the refrigerant flow, which can be used to distribute the refrigerant flow from the outdoor unit through each indoor unit, thereby controlling the temperature change efficiency of each indoor unit.

[0054] In practice, the higher the operating frequency of compressor 1, the more high-temperature refrigerant compressor 1 can provide in the same amount of time, and the stronger the heat exchange capacity of the multi-split system. By controlling the opening of the electronic expansion valve 2 in each indoor unit B, the flow direction and flow rate of the high-temperature refrigerant discharged from the exhaust port of compressor 1 can be controlled. The larger the opening of the electronic expansion valve 2 corresponding to a certain indoor unit B, the larger the refrigerant flow through that indoor unit B, the greater the temperature change rate of that indoor unit B, and the more obvious the user's feeling of hot and cold. Conversely, the smaller the opening of the electronic expansion valve 2 corresponding to a certain indoor unit, the smaller the refrigerant flow through that indoor unit B, the smaller the temperature change rate of that indoor unit B, and the slower the user's feeling of hot and cold.

[0055] The operating energy efficiency decay coefficient is used to characterize parameters affecting the air conditioning capacity of a multi-split air conditioning system, such as filter clogging coefficient, equipment aging coefficient, and time decay coefficient. The filter clogging coefficient characterizes the degree of filter clogging in the multi-split system, the equipment aging coefficient characterizes the aging degree of various components or pipes in the multi-split system, and the time decay coefficient characterizes parameters that decay over time. These operating energy efficiency decay coefficients are not user-controllable and change with operating time. Taking the filter clogging coefficient as an example, the default operating energy efficiency decay coefficient is the standard (1.0). Generally, the higher the degree of clogging, the higher the operating energy efficiency decay coefficient, with a minimum of the standard 1.0. All obtained operating energy efficiency decay coefficients for multi-split air conditioning systems are greater than or equal to 1.0.

[0056] In practice, the operating energy efficiency degradation coefficient can be determined based on parameters such as the continuous usage time of the multi-split air conditioning unit in this cycle, the air humidity of the area, and the concentration of particulate matter in the environment.

[0057] The target opening degree of each electronic expansion valve 2 can be the set opening degree of each indoor unit B based on the temperature, wind speed, and operating mode. The target operating frequency of the compressor 1 refers to the set operating frequency of the multi-split system corresponding to the sum of the energy requirements of each indoor unit B, which is used to meet the heat exchange requirements of each indoor unit.

[0058] Step S20: Calculate the required frequency of each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor.

[0059] It is understandable that the demand frequency of each indoor unit is used to quantify the refrigerant flow allocated to each indoor unit. Since the refrigerant flow allocated to each indoor unit is controlled by the opening degree of the electronic expansion valve in each indoor unit, the demand frequency of each indoor unit can be calculated based on the target opening degree of each electronic expansion valve and the target operating frequency provided by the compressor.

[0060] Step S30: Based on the operating energy efficiency attenuation coefficient of each indoor unit, adjust the required frequency of each indoor unit to obtain the adjusted required frequency of each indoor unit.

[0061] Specifically, the formula for adjusting the required frequency of each indoor unit based on its operating energy efficiency attenuation coefficient is as follows:

[0062] HC(i) = HB(i) * L(i)

[0063] Wherein, L(i) is the operating energy efficiency attenuation coefficient of each indoor unit in this cycle, HB(i) is the demand frequency of each indoor unit, and HC(i) is the correction demand frequency of each indoor unit. In order to facilitate the control of multi-split air conditioning equipment, this embodiment can round up the operating frequency with a decimal to improve the control efficiency of the equipment.

[0064] Step S40: Determine the target operating frequency of the compressor and the target opening degree of each electronic expansion valve based on the correction requirement frequency of each indoor unit.

[0065] It should be understood that correcting the target opening of each electronic expansion valve according to the operating energy efficiency attenuation coefficient can result in a more reasonable distribution of refrigerant flow through each indoor unit, thereby adjusting the heat exchange efficiency of each indoor unit's area and meeting the user's heat exchange needs. Correcting the target operating frequency of the compressor according to the operating energy efficiency attenuation coefficient can save the operating energy consumption of the multi-split system as much as possible while meeting the user's heat exchange needs. Therefore, in this embodiment, by correcting the required frequency of each indoor unit according to the operating energy efficiency attenuation coefficient, and then calculating the corrected target operating frequency of the compressor and the corrected target opening of each electronic expansion valve according to the corrected required frequency of each indoor unit, the user's needs are met even under actual filter clogging conditions.

[0066] Step S50: Control the operation of the multi-unit equipment based on the corrected target opening degree and the corrected target operating frequency.

[0067] In the specific implementation, for ease of understanding, this embodiment and subsequent embodiments will use three indoor units as an example. The target compressor frequency Hc is 70Hz, and the target opening degree of the electronic expansion valve in indoor unit 1 is 0.60, the target opening degree of the electronic expansion valve in indoor unit 2 is 0.40, and the opening degree of the electronic expansion valve in indoor unit 3 is 0.50. After correction, the corrected target operating frequency of the compressor is determined to be 66Hz. Then, the compressor in the multi-split system is controlled to run at 66Hz. The opening degree of the electronic expansion valve corresponding to indoor unit 1 is determined to be 0.50, the opening degree of the electronic expansion valve corresponding to indoor unit 2 is 0.44, and the opening degree of the electronic expansion valve corresponding to indoor unit 3 is 0.56. Then, the electronic expansion valves corresponding to each indoor unit in the multi-split system are controlled to run at the corrected target opening degree to meet the user's heat exchange needs.

[0068] Furthermore, after controlling the operation of the multi-unit equipment based on the corrected target opening degree and the corrected target operating frequency, the method further includes:

[0069] After cleaning the multi-split air conditioning unit, the operating energy efficiency attenuation coefficient of each indoor unit is reset based on the standard operating energy efficiency attenuation coefficient;

[0070] In each preset cycle, the steps of obtaining the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor are repeated.

[0071] Taking the filter clogging coefficient as an example, since the less clogging the filter is in the actual operation of the multi-split air conditioner, the better the ventilation effect, under the premise that the filter clogging coefficient is set to the standard 1.0 by default, if the multi-split air conditioner is cleaned once, the filter clogging coefficient of each indoor unit can be reset based on the standard filter clogging coefficient, which is 1.0.

[0072] The preset cycle can be set by the user, for example, 1 minute. That is, every 1 minute, the steps of obtaining the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor are repeatedly executed to meet the user's heat exchange needs in real time and improve the user experience. In addition, the above steps can be executed even if any of the operating energy efficiency attenuation coefficient, the target opening degree of each electronic expansion valve, or the target operating frequency of the compressor changes, and are not affected by the preset cycle. Since any change in the operating energy efficiency attenuation coefficient, the target opening degree of each electronic expansion valve, or the target operating frequency of the compressor indicates that the user's heat exchange needs have changed, the reasons for the changes in the above factors may be changes in factors such as the user, the set temperature, and the set fan speed. This embodiment does not impose specific restrictions on this.

[0073] This embodiment obtains the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor; calculates the required frequency of each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor; corrects the required frequency of each indoor unit based on the operating energy efficiency attenuation coefficient of each indoor unit to obtain the corrected required frequency of each indoor unit; determines the corrected target operating frequency of the compressor and the corrected target opening degree of each electronic expansion valve based on the corrected required frequency of each indoor unit; and controls the operation of the multi-split air conditioning unit based on the corrected target opening degree and the corrected target operating frequency. Specifically, this application corrects the required frequency of each indoor unit using the operating energy efficiency attenuation coefficient of each indoor unit, and then calculates the corrected opening degree of the electronic expansion valve and the corrected operating frequency of the compressor in each indoor unit based on the corrected required frequency, thereby adapting to the heat exchange requirements of different indoor unit areas. This ensures that the operation of the multi-split air conditioning unit can meet the user's needs, avoiding the technical problem in the prior art where the operating energy efficiency attenuation coefficient of different room indoor units was not considered for the heat exchange capacity, thus affecting the user experience.

[0074] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in the first embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 3 Step S20 includes:

[0075] Step S201: Calculate the target opening percentage of each electronic expansion valve based on its target opening degree.

[0076] It should be noted that the formula for the target opening percentage of each electronic expansion valve is: the opening percentage of the electronic expansion valve of indoor unit i p(i) = the opening of the expansion valve of indoor unit i / the sum of the openings of all expansion valves. The formula for calculating the demand frequency of each indoor unit is: the demand frequency of indoor unit i H(i) = p(i) * compressor frequency.

[0077] Step S202: Calculate the required frequency of each indoor unit based on the target opening ratio and the target operating frequency of the compressor.

[0078] Specifically, taking a target compressor frequency Hc of 70Hz, and the target opening degree of the electronic expansion valve in indoor unit 1 as 0.60, the target opening degree of the electronic expansion valve in indoor unit 2 as 0.40, and the target opening degree of the electronic expansion valve in indoor unit 3 as 0.50, the opening degree ratio of the electronic expansion valve corresponding to indoor unit 1 can be determined as 0.60 / (0.60+0.40+0.50) = 0.4, the opening degree ratio of the electronic expansion valve corresponding to indoor unit 2 as 0.40 / (0.60+0.40+0.50) = 0.27, and the opening degree ratio of the electronic expansion valve corresponding to indoor unit 3 as 0.50 / (0.60+0.40+0.50) = 0.33.

[0079] Based on the target opening ratio of each electronic expansion valve and the target operating frequency of the compressor, the required frequency for indoor unit 1 is determined to be HB(1) = 0.4 * 70 Hz = 28 Hz; the required frequency for indoor unit 2 is HB(1) = 0.27 * 70 Hz = 19 Hz; and the required frequency for indoor unit 3 is HB(1) = 0.33 * 70 Hz = 23 Hz.

[0080] Furthermore, the step of calculating the opening percentage of each electronic expansion valve based on its target opening degree includes:

[0081] Determine the total target opening based on the target opening of each electronic expansion valve;

[0082] The target opening percentage of each electronic expansion valve is determined based on the target opening degree of each electronic expansion valve and the sum of the target opening degrees.

[0083] It should be noted that the target total opening refers to the total opening of the electronic expansion valves of all indoor units connected to the outdoor unit. Since the opening of the electronic expansion valve of indoor units without heat exchange energy requirements is generally 0, the target total opening can also be obtained by adding the openings of the electronic expansion valves of all indoor units with heat exchange energy requirements. This embodiment does not impose specific restrictions on this.

[0084] Furthermore, in this embodiment, step S40 includes:

[0085] Step S401: The sum of the correction requirement frequencies of each indoor unit is used as the correction target operating frequency of the compressor.

[0086] In the specific implementation, the required frequency of indoor unit 1 is 28Hz; the required frequency of indoor unit 2 is 19Hz; the required frequency of indoor unit 3 is 23Hz, and the operating energy efficiency attenuation coefficient L(1) = 1.2 for the area where indoor unit 1 is located, L(1) = 1.0 for the area where indoor unit 1 is located, and L(3) = 1.1 for the area where indoor unit 3 is located, then the corrected required frequency of indoor unit 1 can be calculated as 28*1.2 = 37Hz; the corrected required frequency of indoor unit 2 is 19*1.0 = 19Hz; and the corrected required frequency of indoor unit 3 is 23*1.1 = 25Hz.

[0087] That is, the target operating frequency Hu of the compressor is the sum of the correction demand frequency HC(1) of indoor unit 1, the correction demand frequency HC(2) of indoor unit 2 and the correction demand frequency HC(3) of indoor unit 3, which is 81Hz.

[0088] Step S40 further includes:

[0089] Step S401ˋ: Based on the correction requirement frequency of each indoor unit, correct the target opening of each electronic expansion valve to obtain the corrected target opening of each electronic expansion valve.

[0090] When correcting the target opening of each electronic expansion valve, the target opening of each electronic expansion valve can be calculated in the same way as described above. That is, first calculate the proportion of the corrected target opening of each electronic expansion valve, and then calculate the proportion of the original target opening of the compressor, thereby obtaining the corrected target opening of each electronic expansion valve.

[0091] Furthermore, the step of adjusting the target opening of each electronic expansion valve according to the adjustment requirement frequency of each indoor unit to obtain the adjusted target opening of each electronic expansion valve includes:

[0092] Based on the correction requirement frequency of each indoor unit and the correction target operating frequency of the compressor, determine the correction target opening percentage of each electronic expansion valve;

[0093] The corrected target opening degree of each electronic expansion valve is calculated based on the corrected target opening degree ratio and the sum of the target opening degrees.

[0094] In the specific implementation, the correction target opening ratio of the electronic expansion valve corresponding to indoor unit 1 is 37 / the sum of the correction demand frequencies of all electronic expansion valves is 81, resulting in a correction target opening ratio of 0.46 for the electronic expansion valve of indoor unit 1. The correction target opening ratio of the electronic expansion valve corresponding to indoor unit 2 is 19 / the sum of the correction demand frequencies of all electronic expansion valves is 81, resulting in a correction target opening ratio of 0.23 for the electronic expansion valve of indoor unit 2. The correction target opening ratio of the electronic expansion valve corresponding to indoor unit 2 is 25 / the sum of the correction demand frequencies of all electronic expansion valves is 81, resulting in a correction target opening ratio of 0.31 for the electronic expansion valve of indoor unit 2.

[0095] Using the total opening of the electronic expansion valves as the base, the corrected opening of each expansion valve is calculated. That is, the corrected target opening of the electronic expansion valve in indoor unit 1 is 1.5 * 0.46 = 0.69, the corrected target opening of the electronic expansion valve in indoor unit 2 is 1.5 * 0.23 = 0.35, and the corrected target opening of the electronic expansion valve in indoor unit 3 is 1.5 * 0.31 = 0.46.

[0096] This embodiment corrects the target opening of each electronic expansion valve according to the operating energy efficiency attenuation coefficient to obtain the corrected target opening of each electronic expansion valve, and corrects the target operating frequency of the compressor according to the operating energy efficiency attenuation coefficient to obtain the corrected target operating frequency of the compressor. This reduces the impact of reduced heat exchange efficiency caused by filter blockage in multi-split air conditioning units, and improves the user comfort of the area where each indoor unit is located by reasonably distributing the opening of the electronic expansion valve in each indoor unit.

[0097] This application also provides a control device for multi-unit air conditioning systems; please refer to [reference needed]. Figure 4 The control device for the multi-unit air conditioning system includes:

[0098] The acquisition module 10 is used to acquire the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor.

[0099] The calculation module 20 is used to calculate the required frequency of each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor.

[0100] The correction module 30 is used to correct the required frequency of each indoor unit according to the operating energy efficiency attenuation coefficient of each indoor unit, so as to obtain the corrected required frequency of each indoor unit.

[0101] The correction module 40 is used to determine the correction target operating frequency of the compressor and the correction target opening degree of each electronic expansion valve according to the correction requirement frequency of each indoor unit.

[0102] The control module 50 is used to control the operation of the multi-unit equipment based on the corrected target opening degree and the corrected target operating frequency.

[0103] In one embodiment, the calculation module 20 is further configured to calculate the target opening percentage of each electronic expansion valve based on the target opening degree of each electronic expansion valve; and to calculate the required frequency of each indoor unit based on the target opening percentage and the target operating frequency of the compressor.

[0104] In one embodiment, the calculation module 20 is further configured to determine the total target opening based on the target opening of each electronic expansion valve; and to determine the target opening percentage of each electronic expansion valve based on the target opening of each electronic expansion valve and the total target opening.

[0105] In one embodiment, the correction module 40 is further configured to use the sum of the correction requirement frequencies of each indoor unit as the correction target operating frequency of the compressor.

[0106] In one embodiment, the correction module 40 is further configured to correct the target opening of each electronic expansion valve according to the correction requirement frequency of each indoor unit, so as to obtain the correction target opening of each electronic expansion valve.

[0107] In one embodiment, the correction module 40 is further configured to determine the correction target opening ratio of each electronic expansion valve based on the correction demand frequency of each indoor unit and the correction target operating frequency of the compressor; and to calculate the correction target opening of each electronic expansion valve based on the correction target opening ratio and the sum of the target openings.

[0108] In one embodiment, the control module 50 is further configured to reset the operating energy efficiency attenuation coefficient of each indoor unit based on the standard operating energy efficiency attenuation coefficient after cleaning the multi-split air conditioning unit; and to repeatedly execute the steps of obtaining the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor in each preset cycle.

[0109] This application corrects the demand frequency of each indoor unit by adjusting the operating energy efficiency attenuation coefficient of each indoor unit. Based on the corrected demand frequency, the operating frequency of the electronic expansion valve and compressor in each indoor unit is calculated and adjusted accordingly. This adapts to the heat exchange requirements of different indoor units, enabling the multi-split air conditioning system to meet the user's needs. This avoids the technical problem in the prior art where the operating energy efficiency attenuation coefficient of the indoor units in different rooms was not considered for the impact on heat exchange capacity, which affected the user experience.

[0110] This application provides a multi-unit air conditioning device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the control method of the multi-unit air conditioning device in the first embodiment described above.

[0111] The following is for reference. Figure 5This document illustrates a structural diagram of a multi-connector device suitable for implementing embodiments of this application. The multi-connector device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The multi-unit air conditioning system shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0112] like Figure 5 As shown, the multi-unit device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the multi-unit device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1003 including, for example, magnetic tape, hard disk, etc.; and communication devices 1009. Communication device 1009 allows the multi-unit equipment to communicate wirelessly or wiredly with other devices to exchange data. Although the figures show multi-unit equipment with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0113] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0114] The multi-split air conditioning unit provided in this application, employing the control method for multi-split air conditioning units described in the above embodiments, can solve the technical problems in controlling multi-split air conditioning units. Compared with the prior art, the beneficial effects of the multi-split air conditioning unit provided in this application are the same as the beneficial effects of the control method for multi-split air conditioning units provided in the above embodiments, and other technical features in this multi-split air conditioning unit are the same as those disclosed in the method of the previous embodiment, and will not be repeated here.

[0115] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0116] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0117] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the control method of the multi-unit device in the above embodiments.

[0118] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0119] The aforementioned computer-readable storage medium may be included in the multi-unit equipment; or it may exist independently and not assembled into the multi-unit equipment.

[0120] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the multi-unit device, enable the control of the multi-unit device.

[0121] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0122] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0123] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0124] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the control method of the multi-unit air conditioning system described above, thereby solving the technical problem of controlling multi-unit air conditioning systems. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as the beneficial effects of the control method of the multi-unit air conditioning system provided in the above embodiments, and will not be repeated here.

[0125] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the control method for multi-unit devices as described above.

[0126] The computer program product provided in this application can solve the technical problem of controlling multi-unit air conditioning equipment. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the control method for multi-unit air conditioning equipment provided in the above embodiments, and will not be repeated here.

[0127] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A control method for a multi-unit air conditioning system, characterized in that, The multi-split air conditioning unit includes an outdoor unit and at least two indoor units. The outdoor unit includes at least one compressor, and each indoor unit is equipped with an electronic expansion valve for controlling the refrigerant flow. The control method for the multi-unit air conditioning system includes: Obtain the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor; The required frequency of each indoor unit is calculated based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor. Based on the operating energy efficiency attenuation coefficient of each indoor unit, the required frequency of each indoor unit is adjusted to obtain the adjusted required frequency of each indoor unit. Based on the correction requirement frequency of each indoor unit, determine the correction target operating frequency of the compressor and the correction target opening degree of each electronic expansion valve; The operation of the multi-unit equipment is controlled based on the corrected target opening degree and the corrected target operating frequency.

2. The control method for multi-unit air conditioning equipment as described in claim 1, characterized in that, The calculation of the required frequency for each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency includes: Based on the target opening degree of each electronic expansion valve, the percentage of the target opening degree of each electronic expansion valve is calculated. The required frequency of each indoor unit is calculated based on the target opening percentage and the target operating frequency of the compressor.

3. The control method for multi-unit air conditioning equipment as described in claim 2, characterized in that, The step of calculating the opening percentage of each electronic expansion valve based on its target opening degree includes: Determine the total target opening based on the target opening of each electronic expansion valve; The target opening percentage of each electronic expansion valve is determined based on the target opening degree of each electronic expansion valve and the sum of the target opening degrees.

4. The control method for multi-unit air conditioning equipment as described in claim 1, characterized in that, The step of determining the target operating frequency of the compressor based on the correction requirement frequency of each indoor unit includes: The sum of the correction requirement frequencies of each indoor unit is taken as the correction target operating frequency of the compressor.

5. The control method for multi-unit air conditioning equipment as described in claim 1, characterized in that, The determination of the target opening degree for each electronic expansion valve based on the correction requirement frequency of each indoor unit includes: Based on the correction requirement frequency of each indoor unit, the target opening degree of each electronic expansion valve is corrected to obtain the corrected target opening degree of each electronic expansion valve.

6. The control method for multi-unit air conditioning equipment as described in claim 5, characterized in that, The step of adjusting the target opening of each electronic expansion valve according to the adjustment requirement frequency of each indoor unit, to obtain the adjusted target opening of each electronic expansion valve, includes: Based on the correction requirement frequency of each indoor unit and the correction target operating frequency of the compressor, determine the correction target opening percentage of each electronic expansion valve; The corrected target opening degree of each electronic expansion valve is calculated based on the corrected target opening degree ratio and the sum of the target opening degrees.

7. The control method for multi-unit air conditioning equipment as described in any one of claims 1-6, characterized in that, After controlling the operation of the multi-split air conditioning unit based on the corrected target opening degree and the corrected target operating frequency, the method further includes: After cleaning the multi-split air conditioning unit, the operating energy efficiency attenuation coefficient of each indoor unit is reset based on the standard operating energy efficiency attenuation coefficient; In each preset cycle, the steps of obtaining the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor are repeated.

8. A control device for a multi-unit air conditioning system, characterized in that, The control device for the multi-unit air conditioning system includes: The acquisition module is used to acquire the operating energy efficiency attenuation coefficient of each indoor unit, the target opening degree of each electronic expansion valve, and the target operating frequency of the compressor; The calculation module is used to calculate the required frequency of each indoor unit based on the target opening degree of each electronic expansion valve and the target operating frequency of the compressor. The correction module is used to correct the required frequency of each indoor unit based on the operating energy efficiency attenuation coefficient of each indoor unit, so as to obtain the corrected required frequency of each indoor unit. The correction module is used to determine the target operating frequency of the compressor and the target opening degree of each electronic expansion valve based on the correction requirement frequency of each indoor unit. The control module is used to control the operation of the multi-unit equipment based on the corrected target opening degree and the corrected target operating frequency.

9. A multi-unit air conditioning system, characterized in that, The multi-split air conditioning unit includes an outdoor unit and at least two indoor units. The outdoor unit includes at least one compressor, and each indoor unit is equipped with an electronic expansion valve for controlling the refrigerant flow. The multi-split air conditioning unit further includes: a memory, a processor, and a control program for the multi-split air conditioning unit stored in the memory and executable on the processor, wherein the control program for the multi-split air conditioning unit is configured to implement the control method for the multi-split air conditioning unit as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium stores a control program for a multi-unit air conditioning system, which, when executed by a processor, implements the control method for the multi-unit air conditioning system as described in any one of claims 1 to 7.

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