Energy-saving control method and device for multi-split air conditioner

Abstract

The present invention provides an energy-saving control method and device for a multi-split air conditioner, which belongs to the technical field of multi-split air conditioners. The energy-saving control method for a multi-split air conditioner of an embodiment of the present invention acquires the environmental information of the space where each indoor unit of the multi-split air conditioner is located to more accurately acquire the actual demand of each space. According to the acquired environmental information and the use type of each space, the initial default parameters of each indoor unit of the multi-split air conditioner can be determined, and then the user adjustment parameters of each indoor unit can be determined according to the user input. According to the energy consumption change result of each indoor unit after receiving the user adjustment input, the specific impact of the user adjustment on the energy consumption is evaluated, and then the balanced operation parameters of each indoor unit are determined. During the operation, by identifying abnormal equipment, the energy overflow space is determined from each space, and the operation parameters of the indoor units corresponding to these spaces are readjusted to restore normal operation, thereby reducing the energy consumption of the multi-split air conditioner and meeting the personalized needs of different spaces.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-split air conditioners, and in particular to an energy-saving control method and device for a multi-split air conditioner. Background Art

[0002] Multi-Split Air Conditioning System is an air conditioning system whose main feature is that one outdoor unit can be connected to multiple indoor units to achieve independent control and adjustment of multiple rooms or areas. Compared with the traditional split air conditioning system, the multi-split system has higher flexibility and energy saving. Multi-split air conditioning is usually used in large buildings, office buildings, shopping malls, hotels and other places, and is gradually being used in high-end residences. The advantages of multi-split air conditioning are saving space, reducing operating costs, providing more comfortable environmental control and good aesthetics.

[0003] In the energy consumption of public buildings, the power consumption of HVAC systems accounts for more than 50% of the total building energy consumption. At present, the HVAC systems in buildings have a low degree of automation and lack of universality. The control strategy mainly relies on the experience of operation and maintenance personnel, resulting in serious energy waste and high operation and maintenance costs. As a representative of centralized control, multi-split air conditioning systems are difficult to meet the personalized application needs of different spaces, and the problem of energy waste is prominent. Summary of the invention

[0004] The present invention provides an energy-saving control method and device for a multi-split air conditioner, which is used to solve the defects of the prior art that the personalized needs of different spaces cannot be met at the same time and the energy consumption is high, and achieves the effect of meeting the personalized needs of different spaces and saving energy.

[0005] The present invention provides an energy-saving control method for a multi-split air conditioner, comprising:

[0006] Collecting environmental information of each space where each indoor unit of the multi-split system is located; the environmental information includes temperature, humidity and human sensor status, and the human sensor status is used to indicate the presence status of people in each space;

[0007] Determine the initial default parameters of each indoor unit of the multi-split system according to the environment information of each space where each indoor unit of the multi-split system is located and the usage type of each space;

[0008] Receiving user control input for each indoor unit of the multi-split system, and determining user adjustment parameters of each indoor unit of the multi-split system based on the control input;

[0009] Comparing the initial default parameters with the user adjustment parameters to determine the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input;

[0010] Based on the energy consumption change results of each indoor unit of the multi-split system after receiving the control input of the user, the balanced operation parameters of each indoor unit of the multi-split system are determined;

[0011] When each indoor unit of the multi-split air conditioner is operated according to the balanced operation parameters and an abnormal device of the multi-split air conditioner is identified, energy consumption overflow space is determined from each space where each indoor unit of the multi-split air conditioner is located;

[0012] Based on the environmental information of the energy overflow space, the operating parameters of the indoor unit corresponding to the energy overflow space are readjusted.

[0013] According to an energy-saving control method for a multi-split air conditioner provided by the present invention, the method determines the balanced operation parameters of each indoor unit of the multi-split air conditioner based on the energy consumption change result of each indoor unit of the multi-split air conditioner after receiving the control input of the user, including:

[0014] Based on the energy consumption change results of each indoor unit of the multi-split system after receiving the control input of the user, determine the indoor unit of the multi-split system with increased energy consumption;

[0015] The parameters of the indoor units with increased energy consumption are readjusted multiple times to reduce energy consumption, and during the adjustment process, the user's control input is received, and the parameters of the indoor units are readjusted to obtain balanced operating parameters of each indoor unit of the multi-split system.

[0016] According to an energy-saving control method for a multi-split air conditioner provided by the present invention, the method determines the balanced operation parameters of each indoor unit of the multi-split air conditioner based on the energy consumption change result of each indoor unit of the multi-split air conditioner after receiving the control input of the user, including:

[0017] Based on the energy consumption change results of each indoor unit of the multi-split system after receiving the control input of the user, determine the indoor unit with reduced energy consumption in the multi-split system;

[0018] The user adjustment parameter is determined as a balanced operation parameter of the indoor unit with reduced energy consumption.

[0019] According to a method for energy-saving control of a multi-split air conditioner provided by the present invention, the operating parameters of the indoor unit corresponding to the energy overflow space are readjusted based on the environmental information of the energy overflow space, including:

[0020] Determine the single adjustable load of the multi-split air conditioner;

[0021] Determining the usage type of the energy consumption overflow space, and determining the distribution load of the multi-split air conditioner to the energy consumption overflow space based on the usage type of the energy consumption overflow space;

[0022] Based on the environmental information of the energy overflow space and the allocated load of the multi-split air conditioner to the energy overflow space, the operating parameters of the indoor unit corresponding to the energy overflow space are readjusted.

[0023] According to an energy-saving control method for a multi-split air conditioner provided by the present invention, the single adjustable load of the multi-split air conditioner is determined by the following formula:

[0024] ;

[0025] Among them, q is the single adjustable load of the multi-split air conditioner, Q B is the system power of the indoor unit of the multi-split system, Q P is the load per unit area, S is the control area, E is the equipment efficiency, and R is the response success rate.

[0026] According to an energy-saving control method for a multi-split air conditioner provided by the present invention, the collecting of environmental information of each space where each indoor unit of the multi-split air conditioner is located includes:

[0027] Determine the usage type of each space where each indoor unit of the multi-split system is located;

[0028] Determining the residence time type of each space based on the use type of each space; the residence time type includes long-term residence space and short-term residence space;

[0029] Determining the frequency of collecting environmental information of each space based on the residence time type of each space; the frequency of collecting environmental information of the long-term residence space is greater than the frequency of collecting environmental information of the short-term residence space;

[0030] Based on the frequency of collecting environmental information of each space, collect environmental information of each space where each indoor unit of the multi-connected system is located.

[0031] According to an energy-saving control method for a multi-split air conditioner provided by the present invention, the parameters of each indoor unit of the multi-split air conditioner include: the switch state of each indoor unit of the multi-split air conditioner, the working mode, the corresponding temperature in the cooling and heating modes, the wind speed and air volume in the air supply mode, and at least one of the humidity.

[0032] The present invention also provides an energy-saving control device for a multi-split air conditioner, comprising:

[0033] A collection module, used to collect environmental information of each space where each indoor unit of the multi-split system is located; the environmental information includes temperature, humidity and human sensor status, and the human sensor status is used to indicate the presence status of people in each space;

[0034] The first processing module is used to determine the initial default parameters of each indoor unit of the multi-split system according to the environmental information of each space where each indoor unit of the multi-split system is located and the use type of each space;

[0035] A receiving module, used for receiving a user's control input for each indoor unit of the multi-split system, and determining a user adjustment parameter of each indoor unit of the multi-split system based on the control input;

[0036] The second processing module is used to compare the initial default parameters with the user adjustment parameters to determine the energy consumption change result of each indoor unit of the multi-split system after receiving the user's control input;

[0037] The third processing module is used to determine the balanced operation parameters of each indoor unit of the multi-split system based on the energy consumption change result of each indoor unit of the multi-split system after receiving the control input of the user;

[0038] A fourth processing module is used to determine the energy consumption overflow space from each space where each indoor unit of the multi-split air conditioner is located when each indoor unit of the multi-split air conditioner is operated according to the balanced operation parameters and an abnormal device of the multi-split air conditioner is identified;

[0039] The fifth processing module is used to readjust the operating parameters of each indoor unit of the multi-split system based on the environmental information of the energy overflow space.

[0040] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, an energy-saving control method for a multi-split air conditioner as described above is implemented.

[0041] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the energy-saving control method of the multi-split air conditioner as described in any one of the above is implemented.

[0042] The present invention also provides a computer program product, including a computer program, wherein when the computer program is executed by a processor, the energy-saving control method of the multi-split air conditioner as described above is implemented.

[0043] The energy-saving control method and device for a multi-split air conditioner provided by the present invention acquires the environmental information of the space where each indoor unit of the multi-split air conditioner is located to more accurately obtain the actual needs of each space. According to the acquired environmental information and the usage type of each space, the initial default parameters of each indoor unit of the multi-split air conditioner can be determined, and then the user adjustment parameters of each indoor unit can be determined according to the user input. According to the energy consumption change results of each indoor unit after receiving the user control input, the specific impact of the user control on the energy consumption is evaluated, and then the balanced operation parameters of each indoor unit are determined to meet the user needs while reducing the energy consumption as much as possible. During the operation, by identifying abnormal equipment, the energy overflow space is determined from each space, and the operation parameters of the indoor units corresponding to these spaces are readjusted to restore normal operation, thereby reducing the energy consumption of the multi-split air conditioner and meeting the personalized needs of different spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 This is one of the flow charts of the energy-saving control method of the multi-split air conditioner provided by the present invention;

[0046] Figure 2 This is the second flow chart of the energy-saving control method of the multi-split air conditioner provided by the present invention;

[0047] Figure 3 It is a structural schematic diagram of the energy-saving control device of the multi-split air conditioner provided by the present invention;

[0048] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Combine the following Figure 1-Figure 4 The invention describes the energy-saving control method and device of a multi-split air conditioner.

[0051] like Figure 1 As shown, the energy-saving control method of the multi-split air conditioner according to the embodiment of the present invention mainly includes step 110, step 120, step 130, step 140, step 150, step 160 and step 170.

[0052] Step 110, collecting environmental information of each space where each indoor unit of the multi-split system is located.

[0053] Environmental information includes temperature, humidity and human sensor status. The human sensor status is used to indicate the presence status of people in each space.

[0054] In order to collect environmental information of the space where each indoor unit of the multi-split system is located, corresponding sensors can be installed in each space. The temperature sensor and humidity sensor are used to collect temperature and humidity data in the space in real time, while the human sensor is used to detect the presence and activities of people in the space.

[0055] The above sensors can transmit data to the multi-split air conditioner via wired or wireless means. The multi-split air conditioner receives and stores this data, and performs real-time analysis and processing. Based on the analysis results, the cooling, heating, dehumidification or humidification functions of the air conditioner can be automatically adjusted to maintain a suitable environment in each space. In addition, the human sensing status data can help the system dynamically adjust the operating mode of the air conditioner according to the presence of people, achieving a balance between energy saving and comfort.

[0056] In some embodiments, in addition to the indoor unit and the outdoor units, the multi-split air conditioner may also include an ambient temperature and humidity acquisition module, a human sensing module, an autonomous energy-saving adjustment edge control module, a communication module, and an operation and maintenance centralized monitoring module.

[0057] The ambient temperature and humidity acquisition module is used to collect the ambient temperature and humidity of the indoor unit space. Either a temperature and humidity two-in-one sensor or two independent sensors can be used.

[0058] The human sensing module is used to collect the human motion detection and human presence detection status of the indoor unit space. For example, millimeter wave radar can be used as a sensor to determine the human sensing status in the room. Try not to use infrared detection as human detection to reduce the false triggering signals of the room status by indoor heat sources.

[0059] The autonomous energy-saving adjustment edge control module includes "double autonomous" modules, namely the autonomous energy-saving automatic control module and the subsystem autonomous energy-saving human-computer interaction module. The "autonomous" in the autonomous energy-saving automatic control module and the subsystem autonomous energy-saving human-computer interaction module has different meanings. The "autonomous" in the autonomous energy-saving automatic control module means that this module controls multiple multi-split indoor units, automatically controls the switch status of the indoor units according to the ambient temperature, humidity, and human sensor status, automatically decides the cooling, heating, and ventilation modes, automatically sets the temperature, and automatically determines whether dehumidification or humidification is required. The number of autonomous energy-saving automatic control modules is determined according to the number of indoor units. The "autonomous" in the subsystem autonomous energy-saving human-computer interaction module means that users can choose whether to set the cooling / heating / ventilation mode, temperature, wind speed / air volume, and humidity range required for dehumidification of the multi-split indoor units by themselves, and can set these parameters by themselves. The autonomous energy-saving automatic control module can also be configured for each indoor unit according to needs, or for multiple indoor units with the same working conditions, to further meet the personalized energy-saving and comfort needs of users in the space where the multi-split units are located.

[0060] Step 120, determining the initial default parameters of each indoor unit of the multi-split system according to the environmental information of each space where each indoor unit of the multi-split system is located and the usage type of each space.

[0061] According to the environmental information of each space where each indoor unit of the multi-split system is located and the usage type of each space, the initial default parameters of each indoor unit of the multi-split system can be determined. The initial default parameters take into account both the load capacity of the multi-split air conditioner and the needs and energy-saving requirements of different types of rooms.

[0062] The parameters of each indoor unit of the multi-split system include: the switch status of each indoor unit of the multi-split system, the working mode, the corresponding temperature in the cooling and heating modes, the wind speed and air volume in the air supply mode, and at least one of the humidity.

[0063] The switch status of each indoor unit of the multi-split system is used to indicate whether the indoor unit is turned on. The working modes include cooling, heating, air supply, dehumidification and other modes. The corresponding temperatures in the cooling and heating modes are used to indicate the set target temperatures in the cooling and heating modes. The wind speed and air volume in the air supply mode are used to indicate the set values ​​of the wind speed and air volume in the air supply mode. Humidity is used to indicate the set value of humidity control. These parameters can be set and adjusted according to the environmental information and usage type of each space, so as to meet the air conditioning needs and energy-saving requirements of different spaces.

[0064] It is understandable that environmental information can be collected in real time through installed sensors. Prior to this, the type of space usage needs to be identified.

[0065] The spaces may be classified, such as offices, bedrooms, corridors, pantries, toilets, etc., and the purpose of each space may be determined, for example, through a building floor plan or a site survey.

[0066] Based on the space usage type, the comfort requirements and energy saving requirements of each space can be determined. For example, offices and bedrooms require higher comfort requirements, while corridors and pantries pay more attention to energy saving.

[0067] Based on the collected environmental information and space usage type, the initial default parameters are set for each indoor unit taking into account the comfort needs and energy-saving requirements of each space. These parameters include temperature set point, humidity set point, fan speed, and operation mode.

[0068] The initial default parameters can take into account the load capacity of the air conditioner and the needs of each space. For example, the initial temperature of the office is set to 22℃-24℃, the humidity is set to 40%-60%, and the wind speed is medium; the initial temperature of the corridor is set to 25℃-27℃, the humidity is set to 40%-60%, and the wind speed is low.

[0069] If the actual temperature, humidity or personnel status of the space changes, it can be automatically adjusted according to the preset thresholds and adjustment strategies.

[0070] Step 130, receiving the user's control input for each indoor unit of the multi-split system, and determining the user adjustment parameters of each indoor unit of the multi-split system based on the control input.

[0071] It is understandable that when the multi-split air conditioner operates according to the automatically set initial default parameters, the user can also adjust the parameters of the air conditioner independently. The multi-split air conditioner can receive the user's control input for each indoor unit, and based on these control inputs, the user adjustment parameters of the indoor unit can be determined, thereby further optimizing the operation effect of the air conditioner and the user experience.

[0072] Step 140, comparing the initial default parameters with the user adjustment parameters to determine the energy consumption change result of each indoor unit of the multi-split system after receiving the user's control input.

[0073] It is understandable that the initial default parameters may be compared with the user-adjusted parameters to analyze changes in the parameters after the user's adjustment.

[0074] For example, the user adjusts the temperature setting from 24°C to 22°C, adjusts the wind speed from medium speed to high speed, and so on.

[0075] Based on the parameter changes, the energy consumption model is used to calculate the energy consumption changes of each indoor unit of the multi-split system after receiving the user's control input. The energy consumption model will take into account various factors, such as changes in temperature settings, adjustments to wind speeds, and switching of working modes, which affect the system's energy consumption.

[0076] The energy consumption model is a mathematical model used to estimate the energy consumption changes of the air conditioning system under different operating conditions. The mathematical model can adopt linear regression model, multivariate regression model and other physical models. For example, the linear regression model can fit the linear relationship between temperature, wind speed, working mode and energy consumption based on historical data.

[0077] The energy consumption model takes into account a variety of influencing factors, such as temperature settings, wind speed, working mode, environmental conditions, etc. Through the energy consumption model, the system can predict and calculate the energy consumption of the air conditioner under different settings and operating conditions, thereby helping users optimize use and save energy.

[0078] In the process of establishing the energy consumption model, the initial default parameters of each indoor unit can be set by collecting environmental information such as temperature, humidity, and human sensory status in combination with preset algorithms or rules.

[0079] On this basis, the control instructions input by the user through various interfaces are received and these instructions are converted into specific user adjustment parameters.

[0080] The energy consumption model can be used to calculate the difference in energy consumption before and after parameter adjustment. For example, a 2°C decrease in temperature may increase energy consumption by a certain percentage, and an increase in wind speed may increase the power consumption of the fan motor. The total energy consumption change can be calculated based on the impact of all parameter changes.

[0081] By comparing and calculating changes in energy consumption, users can understand the impact of their own adjustment behaviors on energy consumption, thereby optimizing air-conditioning usage habits and saving energy. In addition, it also provides a basis for automatic adjustment of the air conditioner.

[0082] Based on the energy consumption change results, users can be advised of more energy-saving adjustment plans, such as finding the best balance between comfort and energy consumption.

[0083] Assume that the initial default temperature setting of an office is 24℃ and the wind speed is medium. The user adjusts the temperature setting to 22℃ and the wind speed to high. The multi-split air conditioning system will record the initial default parameters: temperature 24℃, wind speed medium; the multi-split air conditioning system will also record the user adjustment parameters: temperature 22℃, wind speed high.

[0084] According to the energy consumption model, a 2°C drop in temperature may increase cooling energy consumption by 10%. A change in wind speed from medium to high may increase fan energy consumption by 5%. The increase in total energy consumption of the multi-split indoor unit can then be calculated.

[0085] In this embodiment, the initial default parameters are compared with the user adjustment parameters to determine the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input.

[0086] It is understandable that the energy consumption of some indoor units may increase, while the energy consumption of other indoor units may decrease.

[0087] In some embodiments, the multi-split air conditioner includes not only an indoor unit and each outdoor unit, but also a power management module, which can detect the total power consumption of the multi-split air conditioner and can upload the power consumption data in time through the communication module. If the outdoor unit and the indoor unit are provided with current and voltage detection, the power management module can also display the power of each indoor unit and outdoor unit, thereby realizing real-time energy consumption monitoring of each part of the multi-split air conditioner.

[0088] Step 150, based on the energy consumption change result of each indoor unit of the multi-split system after receiving the control input of the user, determine the balanced operation parameters of each indoor unit of the multi-split system.

[0089] In order to achieve energy consumption balance and energy saving in a multi-split system, the operating parameters of each indoor unit can be adjusted.

[0090] For example, for indoor units with increased energy consumption, parameters such as temperature setting and wind speed can be appropriately adjusted to reduce their energy consumption. Specifically, the temperature setting point can be slightly increased or the wind speed can be reduced to reduce the power consumption of the indoor unit. On the contrary, for indoor units with reduced energy consumption, they can be operated according to the parameters adjusted by the user, because their energy consumption has been reduced and meets the energy-saving requirements.

[0091] It should be noted that the balanced operation parameters are not determined once and for all, but can be continuously optimized through a dynamic adjustment and feedback mechanism. Specifically, fine-tuning can be performed based on real-time data, while receiving several user adjustments to ensure that the system meets user needs as much as possible while maintaining energy consumption at an optimal level.

[0092] In some embodiments, based on the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input, the balanced operating parameters of each indoor unit of the multi-split system are determined, including: based on the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input, determining the indoor units of the multi-split system with increased energy consumption; re-adjusting the parameters of the indoor units with increased energy consumption for multiple times to reduce energy consumption, and receiving the user's control input during the adjustment process, and re-adjusting the parameters of the indoor units to obtain balanced operating parameters of each indoor unit of the multi-split system.

[0093] It is understandable that by comparing the initial default parameters with the user-adjusted parameters, it is determined which indoor units have increased energy consumption after receiving the user's control input. For example, if the user lowers the temperature setting of a certain indoor unit, resulting in the indoor unit requiring more cooling power, the energy consumption will increase.

[0094] For indoor units with increased energy consumption, their operating parameters can be adjusted multiple times to reduce energy consumption. The adjusted parameters include but are not limited to temperature setting, fan speed, working mode and humidity.

[0095] During the adjustment process, the user's control input is continuously received. For example, the user may further adjust the temperature, wind speed, etc. The operating parameters of the indoor unit can be readjusted according to the user's latest input.

[0096] According to the user's latest control input and the real-time monitored energy consumption changes, the parameters of the indoor unit with increased energy consumption are adjusted again. The purpose of this adjustment is to inform the user of more energy-saving parameter settings through automatic adjustment while meeting user needs as much as possible, thereby reducing the total energy consumption of the system.

[0097] After multiple adjustments and optimizations, the balanced operating parameters of each indoor unit are finally determined. These parameters can meet the user's comfort needs as much as possible and save energy to the maximum extent.

[0098] In this embodiment, it can be ensured that the multi-connected system achieves the optimal energy-saving effect while meeting user needs. This adjustment process is dynamic and real-time, relying on continuous monitoring, user input and parameter adjustment to achieve the optimal operating state.

[0099] In some embodiments, based on the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input, the balanced operating parameters of each indoor unit of the multi-split system are determined, including: based on the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input, determining the indoor unit with reduced energy consumption in the multi-split system; determining the user adjustment parameters as the balanced operating parameters of the indoor unit with reduced energy consumption.

[0100] It is understandable that by comparing the initial default parameters with the user-adjusted parameters, it is possible to determine which indoor units have reduced energy consumption after receiving user control input. For example, if the user increases the temperature setting of a certain indoor unit, resulting in the indoor unit requiring less cooling power, the energy consumption will be reduced.

[0101] For indoor units with reduced energy consumption, the parameters adjusted by the user are directly used as the balanced operating parameters of the indoor units with reduced energy consumption, because these parameters achieve energy-saving goals while meeting user needs.

[0102] In this embodiment, for indoor units with reduced energy consumption, their user-adjusted parameters are regarded as balanced operating parameters, because these parameters have reduced energy consumption under the premise of achieving user comfort and meet the requirements of energy saving. This process simplifies the processing of indoor units with reduced energy consumption, allowing the system to quickly and effectively apply the parameters adjusted by the user to achieve the purpose of optimizing energy consumption.

[0103] Step 160, when each indoor unit of the multi-split system operates according to the balanced operation parameters and an abnormal device of the multi-split air conditioner is identified, energy overflow spaces are determined from each space where each indoor unit of the multi-split system is located.

[0104] Abnormal equipment usually refers to the multi-split outdoor unit failing to meet the parameter settings of the indoor unit, resulting in abnormal operation of certain indoor units or related equipment.

[0105] In this case, the environmental information and energy consumption data of the space where each indoor unit is located can be collected, and the energy consumption of the space where each indoor unit is located can be identified and judged based on the environmental information.

[0106] Environmental information is used to determine the setting parameters of the indoor unit in the current space under energy-saving conditions. By analyzing energy consumption data and operating parameters, it is determined whether the current space meets the energy-saving requirements. If the energy consumption of a space is significantly higher than the energy-saving standard, the space is identified as an energy-overflow space.

[0107] Step 170: readjust the operating parameters of the indoor unit corresponding to the energy overflow space based on the environmental information of the energy overflow space.

[0108] For energy consumption overflow space, energy consumption can be optimized by adjusting operating parameters. For example, the temperature set point can be appropriately increased, the wind speed can be reduced, or the working mode can be optimized to reduce energy consumption as much as possible, ensuring that the system meets user needs while achieving energy-saving goals.

[0109] Environmental information in the energy overflow space can be collected, including temperature, humidity, and human sensory status, etc. On this basis, the energy consumption characteristics of the energy overflow space can be understood by analyzing the collected environmental information, such as increased energy consumption due to too low a temperature setting or increased energy consumption due to too high a wind speed setting.

[0110] Determine the optimization target based on the cause of energy consumption overflow. For example, appropriately increase the temperature setting, reduce the wind speed, or adjust the humidity setting while ensuring comfort.

[0111] According to the optimization goal, readjust the operating parameters of the indoor units in the energy overflow space. Specific adjustments may include temperature settings, wind speed and air volume settings, and humidity control.

[0112] For temperature setting, you can consider raising the temperature set point in cooling mode to reduce the cooling load; in heating mode, you can appropriately lower the temperature set point to reduce the heating load. For wind speed and air volume setting, you can consider lowering the wind speed and air volume in air supply mode to reduce energy consumption. Humidity control can optimize humidity settings to reduce unnecessary energy consumption during dehumidification or humidification.

[0113] After the initial adjustment of the operating parameters, the operating parameters are continuously optimized through dynamic adjustment and feedback mechanisms, and environmental information and energy consumption data are continuously monitored to facilitate timely adjustment of the operating parameters to ensure energy saving while meeting user comfort.

[0114] According to an energy-saving control method for a multi-split air conditioner provided by an embodiment of the present invention, by collecting environmental information of the space where each indoor unit of the multi-split air conditioner is located, the actual needs of each space are obtained more accurately. According to the collected environmental information and the use type of each space, the initial default parameters of each indoor unit of the multi-split air conditioner can be determined, and then the user adjustment parameters of each indoor unit are determined according to the user input, and according to the energy consumption change results of each indoor unit after receiving the user adjustment input, the specific impact of the user adjustment on the energy consumption is evaluated, and then the balanced operation parameters of each indoor unit are determined to meet the user needs while reducing energy consumption as much as possible. During the operation, by identifying abnormal equipment, the energy overflow space is determined from each space, and the operation parameters of the indoor units corresponding to these spaces are readjusted to restore normal operation, thereby reducing the energy consumption of the multi-split air conditioner and meeting the personalized needs of different spaces.

[0115] In some embodiments, Figure 2 As shown, based on the environmental information of the energy overflow space, the operating parameters of the indoor unit corresponding to the energy overflow space are readjusted, including step 171, step 172 and step 173.

[0116] Step 171, determining the single adjustable load of the multi-split air conditioner.

[0117] Step 172, determining the usage type of the energy consumption overflow space, and determining the distribution load of the multi-split air conditioner to the energy consumption overflow space based on the usage type of the energy consumption overflow space.

[0118] Step 173, based on the environmental information of the energy overflow space and the load allocated to the energy overflow space by the multi-split air conditioner, readjust the operating parameters of the indoor unit corresponding to the energy overflow space.

[0119] It should be noted that the single adjustable load refers to the maximum load change that the multi-split air conditioning system can handle in one adjustment. The single adjustable load needs to consider multiple factors and is not fixed. The single adjustable load refers to the load that the multi-split air conditioner can provide to the multi-split air conditioner during the adjustment process under different working conditions.

[0120] In some embodiments, the single adjustable load of the multi-split air conditioner is determined by the following formula:

[0121] ;

[0122] Among them, q is the single adjustable load of the multi-split air conditioner, Q B is the system power of the indoor unit of the multi-split system, Q P is the load per unit area, S is the control area, E is the equipment efficiency, and R is the response success rate.

[0123] Q B The system power of the indoor unit of the multi-split system is used to indicate the power of the indoor unit of the multi-split system under the corresponding working conditions, that is, the load generated. In addition, the equipment efficiency of the equipment during operation needs to be considered. The equipment efficiency affects the actual required load because there may be energy loss in actual operation.

[0124] The load per unit area is used to indicate the air conditioning load required per unit area of ​​different spaces. The load per unit area is different for spaces with different usage types and environmental information. For example, the load per unit area of ​​a space where the presence of a person is detected is greater than the load of a space where the presence of a person is not detected. For spaces with usage types such as offices, the load per unit area is also greater than the load of spaces such as corridors and pantries.

[0125] The response success rate is used to indicate the responsiveness of the multi-split air conditioner to the control demand. It is an indicator to measure whether the system can provide the required load when needed.

[0126] If the load on the multi-split outdoor unit has reached its designed maximum value, the multi-split air conditioner can no longer provide additional cooling or heating capacity, although there may still be demand.

[0127] For example, the response success rate will also be reduced when there is a large temperature difference between indoors and outdoors, the indoor space is large, or there are a lot of people.

[0128] The size of the response success rate can usually be determined based on the historical operating data of the multi-split air conditioner, and can be comprehensively set by taking into account factors such as environmental information and the operating years of the multi-split air conditioner.

[0129] By considering the response success rate, energy can be allocated and utilized more accurately, and excessive energy consumption can be avoided when it is not necessary, thereby improving energy utilization efficiency.

[0130] You can first identify the type of use of each space, such as office, meeting room, bedroom, corridor, pantry, and lounge.

[0131] Based on the usage type, the system will determine the priority and energy consumption requirements of these spaces. That is, when determining the usage type of the energy overflow space, the load allocated to the energy overflow space by the multi-split air conditioner is determined based on the usage type of the energy overflow space. For example, a conference room may require a higher air conditioning load during a meeting, and an adjustable load can be allocated to the conference room, while the office can also increase the allocated load during working hours.

[0132] In this case, the operating parameters can be readjusted based on environmental information and distributed loads.

[0133] According to the usage type and priority determined in step 172, a corresponding load is allocated to each space, and then the operating parameters of the indoor unit are readjusted according to the allocated load and environmental information, so that the effective load can be reused.

[0134] After determining the single adjustable load of the multi-split air conditioner, the load is then allocated to different spaces. When the allocable load is insufficient, the cascade PID control method can be used to increase the cooling efficiency.

[0135] After readjusting the operating parameters of the indoor unit corresponding to the energy overflow space, if the allocated load of the energy overflow space is insufficient, the new operating parameters may still be insufficient to meet the actual cooling capacity demand of the space.

[0136] In this case, the cooling efficiency of the multi-split air conditioner can also be improved under a certain load, thereby achieving energy-saving control. In order to improve the cooling efficiency of the multi-split air conditioner, the spray water volume of the outdoor unit can be adjusted to match the cooling efficiency.

[0137] It is understandable that the outdoor unit of the multi-split air conditioner includes a compressor, a condenser and an evaporator.

[0138] As the core of the refrigeration system, the compressor is responsible for compressing the low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, providing power for the entire refrigeration system.

[0139] The function of the condenser is to cool the high-temperature and high-pressure refrigerant vapor discharged from the compressor into liquid and release heat to the outside environment. This process is achieved through forced convection heat exchange with the outside air.

[0140] In cooling mode, the refrigerant in the evaporator absorbs the heat of the indoor air and evaporates, thereby reducing the indoor temperature. The evaporated refrigerant gas is sucked into the compressor again and a new cycle begins.

[0141] If the outdoor unit temperature is too high, the compressor may overheat, causing its efficiency to decrease, which in turn affects the performance of the entire refrigeration system. If the outdoor unit temperature is too high, the heat dissipation efficiency of the condenser will decrease, causing the refrigerant to not condense effectively, thus affecting the refrigeration effect. In addition, multi-split air conditioning systems usually have an overheating protection mechanism. When the outdoor unit temperature is too high, the system may automatically enter a protection state and limit the flow of refrigerant.

[0142] In some embodiments, the compressor can be prevented from overheating by cooling the outdoor unit, that is, by spraying cooling. At the same time, the heat dissipation efficiency of the condenser can be improved, the cooling efficiency of the condenser can be improved, and the probability of the outdoor unit entering the overheating protection mechanism can be reduced. The cooling effect of the multi-split air conditioner can be effectively improved, so that more cooling capacity can be provided at lower energy consumption to meet usage needs.

[0143] Specifically, the real-time feedback curve of the condenser's cooling efficiency can be coupled with the curve of outdoor temperature and humidity, and the temporary environment of the multi-split outdoor unit can be directly changed by spray cooling, thereby indirectly changing the cooling efficiency of the condenser. This is a cascade PID control. The condition for initiating this cascade is that there is a deviation between the actual cooling demand of the indoor unit and the optimal response curve of the outdoor unit, that is, this cascade PID adjustment will only be started when the outdoor unit efficiency is not enough to respond to the optimal energy consumption of the indoor unit to reduce the temperature of the outdoor unit.

[0144] By real-time monitoring of the cooling demand of the indoor unit and the working status of the outdoor unit, the working environment of the outdoor unit can be optimized through spray cooling when necessary, thereby improving the cooling efficiency of the entire multi-split air-conditioning system, thereby achieving energy saving and better meeting the cooling needs of users.

[0145] In some embodiments, collecting environmental information of each space where each indoor unit of the multi-split system is located includes the following process.

[0146] You can first determine the usage type of each space where each indoor unit of the multi-split system is located. For example, the usage type of the space can be office, conference room, pantry, corridor, bedroom, etc.

[0147] On this basis, the residence time type of each space is determined based on the use type of each space. The residence time type is divided into long-term residence space and short-term residence space. Long-term residence spaces include bedrooms and office areas, where people stay for a longer time. Short-term residence spaces include pantries and corridors, where people stay for a shorter time.

[0148] The frequency of collecting the environment information of each space is determined based on the residence time type of each space; the frequency of collecting the environment information of the long-term residence space is greater than the frequency of collecting the environment information of the short-term residence space.

[0149] According to the dwell time type, the frequency of collecting environmental information of each space can be determined. The collection frequency refers to the frequency at which the system collects environmental information once.

[0150] Since people stay longer in long-stay spaces, a higher collection frequency can be set to adjust air conditioning parameters more frequently to ensure a comfortable environment.

[0151] Since people stay in short-term residence spaces for a shorter period of time, a lower collection frequency can be set to reduce unnecessary adjustments and thus save energy.

[0152] Finally, based on the frequency of collecting environmental information of each space, the environmental information of each space where each indoor unit of the multi-connected system is located can be collected.

[0153] For example, for a tea room or corridor, environmental information can be detected every two minutes to quickly respond to air conditioning needs when people enter. For a bedroom or office area, environmental information can be detected every thirty minutes or one hour to ensure comfort for a long time.

[0154] In this embodiment, different frequencies for collecting environmental information are set for spaces of different usage types, so that more personalized adjustments can be provided for different spaces, and the air conditioner can be adjusted more accurately to achieve better energy-saving effects.

[0155] The energy-saving control device of the multi-split air conditioner provided by the present invention is described below. The energy-saving control device of the multi-split air conditioner described below and the energy-saving control method of the multi-split air conditioner described above can be referred to each other.

[0156] like Figure 3 As shown, the energy-saving control device of the multi-split air conditioner according to the embodiment of the present invention mainly includes a collection module 310, a first processing module 320, a receiving module 330, a second processing module 340, a third processing module 350, a fourth processing module 360 ​​and a fifth processing module 370.

[0157] The acquisition module 310 is used to collect environmental information of each space where each indoor unit of the multi-split system is located; the environmental information includes temperature, humidity and human sensor status, and the human sensor status is used to indicate the presence status of people in each space;

[0158] The first processing module 320 is used to determine the initial default parameters of each indoor unit of the multi-split system according to the environmental information of each space where each indoor unit of the multi-split system is located and the use type of each space;

[0159] The receiving module 330 is used to receive the user's control input for each indoor unit of the multi-split system, and determine the user adjustment parameters of each indoor unit of the multi-split system based on the control input;

[0160] The second processing module 340 is used to compare the initial default parameters with the user adjustment parameters to determine the energy consumption change result of each indoor unit of the multi-split system after receiving the user's control input;

[0161] The third processing module 350 is used to determine the balanced operation parameters of each indoor unit of the multi-split system based on the energy consumption change result of each indoor unit of the multi-split system after receiving the control input of the user;

[0162] The fourth processing module 360 ​​is used to determine the energy consumption overflow space from each space where each indoor unit of the multi-split air conditioner is located when each indoor unit of the multi-split air conditioner is operated according to the balanced operation parameters and an abnormal device of the multi-split air conditioner is identified;

[0163] The fifth processing module 370 is used to readjust the operating parameters of each indoor unit of the multi-split system based on the environmental information of the energy overflow space.

[0164] According to the energy-saving control device of the multi-split air conditioner provided by the embodiment of the present invention, by collecting the environmental information of the space where each indoor unit of the multi-split air conditioner is located, the actual demand of each space is obtained more accurately. According to the collected environmental information and the use type of each space, the initial default parameters of each indoor unit of the multi-split air conditioner can be determined, and then the user adjustment parameters of each indoor unit are determined according to the user input, and the specific impact of the user adjustment on the energy consumption is evaluated according to the energy consumption change result of each indoor unit after receiving the user adjustment input, and then the balanced operation parameters of each indoor unit are determined to meet the user needs while reducing the energy consumption as much as possible. During the operation, by identifying abnormal equipment, the energy overflow space is determined from each space, and the operation parameters of the indoor units corresponding to these spaces are readjusted to restore normal operation, thereby reducing the energy consumption of the multi-split air conditioner and meeting the personalized needs of different spaces.

[0165] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor (processor) 410 , a communication interface (Communications Interface) 420 , a memory (memory) 430 and a communication bus 440 , wherein the processor 410 , the communication interface 420 , and the memory 430 communicate with each other through the communication bus 440 . The processor 410 can call the logic instructions in the memory 430 to execute the energy-saving control method of the multi-split air conditioner, which includes: collecting environmental information of each space where each indoor unit of the multi-split air conditioner is located; the environmental information includes temperature, humidity and human sensing state, and the human sensing state is used to indicate the presence state of people in each space; determining the initial default parameters of each indoor unit of the multi-split air conditioner according to the environmental information of each space where each indoor unit of the multi-split air conditioner is located and the use type of each space; receiving the user's control input for each indoor unit of the multi-split air conditioner, and determining the user adjustment parameters of each indoor unit of the multi-split air conditioner based on the control input; comparing the initial default parameters with the user adjustment parameters to determine the energy consumption change result of each indoor unit of the multi-split air conditioner after receiving the user's control input; based on the energy consumption change result of each indoor unit of the multi-split air conditioner after receiving the user's control input, determining the balanced operation parameters of each indoor unit of the multi-split air conditioner; when each indoor unit of the multi-split air conditioner is operated according to the balanced operation parameters and abnormal equipment of the multi-split air conditioner is identified, determining the energy consumption overflow space from each space where each indoor unit of the multi-split air conditioner is located; based on the environmental information of the energy consumption overflow space, readjusting the operation parameters of the indoor unit corresponding to the energy consumption overflow space.

[0166] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0167] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the energy-saving control method of the multi-split air conditioner provided by the above methods, the method comprising: collecting environmental information of each space where each indoor unit of the multi-split air conditioner is located; the environmental information includes temperature, humidity and human sensing state, the human sensing state is used to indicate the presence state of people in each space; according to the environmental information of each space where each indoor unit of the multi-split air conditioner is located and the use type of each space, determining the initial default parameters of each indoor unit of the multi-split air conditioner; receiving the user's multi-split air conditioner The control input of each indoor unit of the multi-split system is connected, and the user control parameters of each indoor unit of the multi-split system are determined based on the control input; the initial default parameters are compared with the user adjustment parameters to determine the change in energy consumption of each indoor unit of the multi-split system after receiving the user's control input; based on the change in energy consumption of each indoor unit of the multi-split system after receiving the user's control input, the balanced operation parameters of each indoor unit of the multi-split system are determined; when each indoor unit of the multi-split system operates according to the balanced operation parameters and abnormal equipment of the multi-split air conditioner is identified, the energy overflow space is determined from each space where each indoor unit of the multi-split system is located; based on the environmental information of the energy overflow space, the operation parameters of the indoor unit corresponding to the energy overflow space are readjusted.

[0168] On the other hand, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the energy-saving control method for a multi-split air conditioner provided by the above-mentioned methods, the method comprising: collecting environmental information of each space where each indoor unit of the multi-split air conditioner is located; the environmental information comprises temperature, humidity and human sense status, the human sense status is used to indicate the presence status of personnel in each space; determining initial default parameters of each indoor unit of the multi-split air conditioner according to the environmental information of each space where each indoor unit of the multi-split air conditioner is located and the use type of each space; receiving user control input for each indoor unit of the multi-split air conditioner, and adjusting the parameters based on the control input; The user adjustment parameters of each indoor unit of the multi-split system are determined based on the control input; the initial default parameters are compared with the user adjustment parameters to determine the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input; based on the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input, the balanced operation parameters of each indoor unit of the multi-split system are determined; when each indoor unit of the multi-split system operates according to the balanced operation parameters and abnormal equipment of the multi-split air conditioner is identified, the energy overflow space is determined from each space where each indoor unit of the multi-split system is located; based on the environmental information of the energy overflow space, the operation parameters of the indoor unit corresponding to the energy overflow space are readjusted.

[0169] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0170] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0171] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for energy saving and control of a multi-split air conditioner, characterized in that: include: Collecting environmental information of each space where each indoor unit of the multi-split system is located; the environmental information includes temperature, humidity and human sensor status, and the human sensor status is used to indicate the presence status of people in each space; Determine the initial default parameters of each indoor unit of the multi-split system according to the environment information of each space where each indoor unit of the multi-split system is located and the usage type of each space; Receiving user control input for each indoor unit of the multi-split system, and determining user adjustment parameters of each indoor unit of the multi-split system based on the control input; Comparing the initial default parameters with the user adjustment parameters to determine the energy consumption change results of each indoor unit of the multi-split system after receiving the user's control input; Based on the energy consumption change results of each indoor unit of the multi-split system after receiving the control input of the user, the balanced operation parameters of each indoor unit of the multi-split system are determined; When each indoor unit of the multi-split air conditioner is operated according to the balanced operation parameters and an abnormal device of the multi-split air conditioner is identified, energy consumption overflow space is determined from each space where each indoor unit of the multi-split air conditioner is located; Based on the environmental information of the energy consumption overflow space, readjust the operating parameters of the indoor unit corresponding to the energy consumption overflow space; The step of re-adjusting the operation parameters of the indoor unit corresponding to the energy overflow space based on the environmental information of the energy overflow space includes: Determine the single adjustable load of the multi-split air conditioner; Determining the usage type of the energy consumption overflow space, and determining the distribution load of the multi-split air conditioner to the energy consumption overflow space based on the usage type of the energy consumption overflow space; Based on the environmental information of the energy consumption overflow space and the load allocated by the multi-split air conditioner to the energy consumption overflow space, readjust the operating parameters of the indoor unit corresponding to the energy consumption overflow space; The single adjustable load of the multi-split air conditioner is determined by the following formula: ； Among them, q is the single adjustable load of the multi-split air conditioner, Q B is the system power of the indoor unit of the multi-split system, Q P is the load per unit area, S is the control area, E is the equipment efficiency, and R is the response success rate.

2. The energy-saving control method of a multi-split air conditioner according to claim 1, characterized in that: The method of determining the balanced operation parameters of each indoor unit of the multi-split system based on the energy consumption change result of each indoor unit of the multi-split system after receiving the control input of the user includes: Based on the energy consumption change results of each indoor unit of the multi-split system after receiving the control input of the user, determine the indoor unit of the multi-split system with increased energy consumption; The parameters of the indoor units with increased energy consumption are readjusted multiple times to reduce energy consumption, and during the adjustment process, the user's control input is received, and the parameters of the indoor units are readjusted to obtain balanced operating parameters of each indoor unit of the multi-split system.

3. The energy-saving control method of a multi-split air conditioner according to claim 1, characterized in that: The method of determining the balanced operation parameters of each indoor unit of the multi-split system based on the energy consumption change result of each indoor unit of the multi-split system after receiving the control input of the user includes: Based on the energy consumption change results of each indoor unit of the multi-split system after receiving the control input of the user, determine the indoor unit with reduced energy consumption in the multi-split system; The user adjustment parameter is determined as a balanced operation parameter of the indoor unit with reduced energy consumption.

4. The energy-saving control method of a multi-split air conditioner according to claim 1, characterized in that: The collecting of environmental information of each space where each indoor unit of the multi-split system is located includes: Determine the usage type of each space where each indoor unit of the multi-split system is located; Determining the residence time type of each space based on the use type of each space; the residence time type includes long-term residence space and short-term residence space; Determining the frequency of collecting environmental information of each space based on the residence time type of each space; the frequency of collecting environmental information of the long-term residence space is greater than the frequency of collecting environmental information of the short-term residence space; Based on the frequency of collecting environmental information of each space, collect environmental information of each space where each indoor unit of the multi-connected system is located.

5. The energy-saving control method of a multi-split air conditioner according to claim 1, characterized in that: The parameters of each indoor unit of the multi-split system include: the switch status of each indoor unit of the multi-split system, the working mode, the corresponding temperature in the cooling and heating modes, the wind speed and air volume in the air supply mode, and at least one of the humidity.

6. An energy-saving control device for a multi-split air conditioner, characterized in that: The energy-saving control device of the multi-split air conditioner adopts the energy-saving control method of the multi-split air conditioner according to claim 1 to control the multi-split air conditioner, and the energy-saving control device of the multi-split air conditioner includes: A collection module, used to collect environmental information of each space where each indoor unit of the multi-split system is located; the environmental information includes temperature, humidity and human sensor status, and the human sensor status is used to indicate the presence status of people in each space; The first processing module is used to determine the initial default parameters of each indoor unit of the multi-split system according to the environmental information of each space where each indoor unit of the multi-split system is located and the use type of each space; A receiving module, used for receiving a user's control input for each indoor unit of the multi-split system, and determining a user adjustment parameter of each indoor unit of the multi-split system based on the control input; The second processing module is used to compare the initial default parameters with the user adjustment parameters to determine the energy consumption change result of each indoor unit of the multi-split system after receiving the user's control input; The third processing module is used to determine the balanced operation parameters of each indoor unit of the multi-split system based on the energy consumption change result of each indoor unit of the multi-split system after receiving the control input of the user; A fourth processing module is used to determine the energy consumption overflow space from each space where each indoor unit of the multi-split air conditioner is located when each indoor unit of the multi-split air conditioner is operated according to the balanced operation parameters and an abnormal device of the multi-split air conditioner is identified; The fifth processing module is used to readjust the operating parameters of each indoor unit of the multi-split system based on the environmental information of the energy overflow space.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the program, the energy-saving control method of the multi-split air conditioner as described in any one of claims 1 to 5 is implemented.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the energy-saving control method of the multi-split air conditioner as claimed in any one of claims 1 to 5 is implemented.

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