Control method for air conditioning system, and controller, air conditioning system and storage medium

Abstract

Provided in the embodiments of the present application are a control method for an air conditioning system, and a controller, an air conditioning system and a storage medium, wherein the air conditioning system comprises an outdoor unit, at least one master indoor unit and at least one slave indoor unit, and each slave indoor unit is connected to the outdoor unit by means of a master indoor unit. The method comprises: acquiring a first measured temperature of a target master indoor unit, and second measured temperatures of all slave indoor units corresponding to the target master indoor unit, wherein the first measured temperature and the second measured temperatures comprise an indoor ambient temperature and / or an indoor heat exchanger temperature (S410); and controlling the operating state of an air conditioning system on the basis of the first measured temperature and the second measured temperatures (S420).

Description

Air conditioning system control methods, controllers, air conditioning systems and storage media

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410925284.9, filed on July 10, 2024, entitled "Control Method, Controller, Air Conditioning System and Storage Medium for Air Conditioning System", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air conditioning system technology, and in particular to a control method, controller, air conditioning system and storage medium for an air conditioning system. Background Technology

[0004] In related technologies, for multi-split air conditioners in certain application scenarios, multiple indoor units usually need to be controlled at the same frequency. Specifically, such multi-split air conditioners often install multiple indoor units in the same large space, such as large stadiums, conference halls, offices, etc. In these scenarios, the need for individual control of each indoor unit is relatively small, and the need for synchronous control is more common.

[0005] For example, "Twins" or "Triple" recessed air conditioners typically have a main indoor unit and slave indoor units. A "Twins" recessed air conditioner uses one outdoor unit to drive two recessed indoor units. One indoor unit is the main unit, and the other is the slave unit. The main unit can receive control via remote control, wired controller, central controller, Wi-Fi, etc., and the slave unit follows the main unit to achieve simultaneous on / off control. However, currently, there is no detailed explanation of the control method for Twins recessed air conditioners on the market, making it difficult to effectively adjust and control them. Summary of the Invention

[0006] This application aims to at least solve one of the technical problems existing in the related art. To this end, this application proposes a control method, controller, air conditioning system, and storage medium for an air conditioning system, aiming to provide a control method for a multi-split air conditioner to improve the cooling and heating effect of the air conditioner.

[0007] In a first aspect, embodiments of this application provide a control method for an air conditioning system, the air conditioning system including an outdoor unit, at least one main indoor unit and at least one slave indoor unit, wherein each slave indoor unit is connected to the outdoor unit through a main indoor unit; the method includes:

[0008] Obtain the first detection temperature of the target main indoor unit and the second detection temperature of all slave indoor units corresponding to the target main indoor unit, wherein the first detection temperature and the second detection temperature include the indoor ambient temperature and / or the indoor heat exchanger temperature;

[0009] The operating status of the air conditioning system is controlled based on the first and second detected temperatures.

[0010] According to some embodiments of this application, controlling the operating state of an air conditioning system based on a first detected temperature and a second detected temperature includes:

[0011] The target reference temperature is determined based on the first and second detection temperatures.

[0012] The compressor's operating status is controlled based on the target reference temperature.

[0013] According to some embodiments of this application, the first detected temperature is a first indoor ambient temperature, the second detected temperature is a second indoor ambient temperature, and the target reference temperature is the average indoor ambient temperature of the first indoor ambient temperature and all second indoor ambient temperatures; controlling the compressor's operating state according to the target reference temperature includes:

[0014] The compressor is started based on the average indoor temperature and the compensated set temperature.

[0015] The compressor's operating frequency is calculated using a genetic algorithm based on the average indoor temperature.

[0016] The operating frequency is corrected using a compensation coefficient to obtain the target operating frequency. The compensation coefficient is determined by the number and model of the indoor units.

[0017] Control the compressor to operate at the target operating frequency.

[0018] According to some embodiments of this application, determining the compressor startup based on the average indoor ambient temperature and a compensated set temperature includes one of the following:

[0019] In cooling or dehumidifying mode, if the average indoor temperature is greater than the first set temperature after compensation, the compressor will be started.

[0020] In heating mode, the compressor is activated when the average indoor temperature is lower than the compensated second set temperature.

[0021] According to some embodiments of this application, the first detected temperature is the temperature of the first indoor heat exchanger, the second detected temperature is the temperature of the second indoor heat exchanger, and the target reference temperature is the extreme value of the indoor heat exchanger temperature among the first indoor heat exchanger temperature and all second indoor heat exchanger temperatures; controlling the operating state of the compressor according to the target reference temperature includes:

[0022] Obtain the preset threshold temperature;

[0023] The compressor's operating status is controlled based on the extreme temperature of the indoor heat exchanger and the preset threshold temperature.

[0024] According to some embodiments of this application, in cooling mode or dehumidification mode, the extreme value of the indoor heat exchanger temperature is the minimum indoor heat exchanger temperature; the compressor's operating state is controlled based on the extreme value of the indoor heat exchanger temperature and a preset threshold temperature, including one of the following:

[0025] When the minimum indoor heat exchanger temperature is less than the first threshold temperature but greater than or equal to the second threshold temperature, reduce the compressor's operating frequency.

[0026] When the minimum indoor heat exchanger temperature is lower than the second threshold temperature, the compressor is controlled to stop running.

[0027] According to some embodiments of this application, in heating mode, the extreme value of the indoor heat exchanger temperature is the maximum indoor heat exchanger temperature; the compressor's operating state is controlled based on the extreme value of the indoor heat exchanger temperature and a preset threshold temperature, including one of the following:

[0028] When the maximum indoor heat exchanger temperature is greater than the third threshold temperature but less than or equal to the fourth threshold temperature, reduce the compressor's operating frequency.

[0029] When the maximum indoor heat exchanger temperature exceeds the fourth threshold temperature, the compressor is controlled to stop running.

[0030] According to some embodiments of this application, the first detected temperature is a first indoor ambient temperature, and the second detected temperature is a second indoor ambient temperature; controlling the operating state of the air conditioning system based on the first and second detected temperatures includes:

[0031] Determine the temperature difference between the second indoor ambient temperature and the first indoor ambient temperature;

[0032] The fan speed of the indoor unit is controlled based on the temperature difference.

[0033] According to some embodiments of this application, in cooling mode, controlling the fan speed of the indoor unit based on the temperature difference includes one of the following:

[0034] When the temperature difference is in the first range, reduce the fan speed of the indoor unit;

[0035] When the temperature difference is in the second range, the fan speed of the secondary indoor unit will be adjusted to match the fan speed of the primary indoor unit. The second range is higher than the first range.

[0036] When the temperature difference is in the third range, the fan speed of the indoor unit is increased by the first adjustment range, wherein the third range is higher than the second range;

[0037] When the temperature difference is in the fourth range, the fan speed of the indoor unit is increased by the second adjustment range, wherein the fourth range is higher than the third range, and the second adjustment range is greater than the first adjustment range.

[0038] According to some embodiments of this application, in dehumidification mode, the fan speed of the indoor unit is controlled based on the temperature difference, including one of the following:

[0039] When the temperature difference is greater than or equal to the first preset difference, the fan speed of the indoor unit is increased, where the first preset difference is a positive number;

[0040] When the temperature difference is less than or equal to the second preset difference, the fan speed of the indoor unit is reduced, where the second preset difference is a negative number;

[0041] When the temperature difference is greater than the second preset difference but less than the first preset difference, the fan speed of the secondary indoor unit will be adjusted to match the fan speed of the primary indoor unit.

[0042] According to some embodiments of this application, in heating mode, controlling the fan speed of the indoor unit based on the temperature difference includes one of the following:

[0043] When the temperature difference is in the fifth range, reduce the fan speed of the indoor unit;

[0044] When the temperature difference is in the sixth range, the fan speed of the secondary indoor unit will be adjusted to match the fan speed of the primary indoor unit. The sixth range is lower than the fifth range.

[0045] When the temperature difference is in the seventh range, the fan speed of the indoor unit is increased by the third adjustment range, where the seventh range is lower than the sixth range;

[0046] When the temperature difference is in the eighth range, the fan speed of the indoor unit is increased by the fourth adjustment range. The eighth range is lower than the seventh range, and the fourth adjustment range is greater than the third adjustment range.

[0047] Secondly, embodiments of this application provide a controller, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the control method of the air conditioning system described in the first aspect when running the computer program.

[0048] Thirdly, embodiments of this application provide an air conditioning system including the controller described in the second aspect.

[0049] According to some embodiments of this application, the outdoor unit and the main indoor unit are connected via an indoor-outdoor communication line, and the main indoor unit and at least one slave indoor unit are connected via a master-slave communication line.

[0050] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for performing the control method of the air conditioning system as described in the first aspect above.

[0051] Fifthly, embodiments of this application provide a computer program product, including a computer program or computer instructions, wherein the computer program or computer instructions are stored in a computer-readable storage medium, a processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions to cause the computer device to perform the control method of the air conditioning system as described in the first aspect above.

[0052] The technical solution according to the embodiments of this application has at least the following beneficial effects: For multi-split air conditioners of the "Twins" or "Triple" type, the embodiments of this application can obtain the indoor ambient temperature and / or indoor heat exchanger temperature of the target main indoor unit and all corresponding slave indoor units, and control the operating status of the air conditioning system based on the above-mentioned indoor ambient temperature and / or indoor heat exchanger temperature. Therefore, the embodiments of this application provide a control method for multi-split air conditioners, and can control based on indoor ambient temperature or indoor heat exchanger temperature, thereby improving the cooling and heating effect of the air conditioning system, improving user comfort, and ensuring the normal operation of the air conditioning system.

[0053] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0054] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0055] Figure 1 is a control schematic diagram of a Twins model air conditioning system provided in an embodiment of this application;

[0056] Figure 2 is a schematic diagram of the wiring method of the Twins model air conditioning system provided in an embodiment of this application;

[0057] Figure 3 is a flowchart of a control method for an air conditioning system provided in an embodiment of this application;

[0058] Figure 4 is a flowchart of a control method for an air conditioning system provided in another embodiment of this application;

[0059] Figure 5 is a flowchart of a control method for an air conditioning system provided in another embodiment of this application;

[0060] Figure 6 is a flowchart of a control method for an air conditioning system provided in another embodiment of this application;

[0061] Figure 7 is a flowchart of a control method for an air conditioning system provided in another embodiment of this application;

[0062] Figure 8 is a fan speed control curve of the indoor unit in cooling mode according to an embodiment of this application;

[0063] Figure 9 is a fan speed control curve of the indoor unit in heating mode according to an embodiment of this application;

[0064] Figure 10 is a flowchart of the cooling, dehumidification and heating control logic of an air conditioning system provided in an embodiment of this application;

[0065] Figure 11 is a schematic diagram of the connection of multiple indoor units for full control processing provided in an embodiment of this application;

[0066] Figure 12 is a schematic diagram of a controller for performing a control method for an air conditioning system according to an embodiment of this application. Detailed Implementation

[0067] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0068] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0069] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0070] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0071] In some applications, multi-split air conditioners often require simultaneous control of multiple indoor units. Specifically, these systems typically involve installing multiple indoor units in a large space, such as large stadiums, conference rooms, or offices. In these environments, individual control of each indoor unit is less necessary; simultaneous control is more crucial. For example, "Twins" or "Triple" embedded air conditioners usually have a master indoor unit and slave indoor units. A "Twins" embedded air conditioner uses one outdoor unit to drive two embedded indoor units. One indoor unit acts as the master, and the other as the slave. The master unit can receive control via remote control, wired controller, central controller, or Wi-Fi, while the slave unit follows the master unit's commands, enabling simultaneous on / off control. However, currently, there is a lack of detailed explanations of the control methods for Twins embedded air conditioners on the market, making it difficult to effectively adjust and control them.

[0072] Based on the above, embodiments of this application propose a control method, controller, air conditioning system, and storage medium for an air conditioning system, aiming to provide a control method for a multi-split air conditioner to improve the cooling and heating effect of the air conditioner.

[0073] The various embodiments of the air conditioning system of this application will be further described below with reference to the accompanying drawings.

[0074] In one embodiment, as shown in FIG1, the air conditioning system includes an outdoor unit 300, at least one main indoor unit 100 and at least one slave indoor unit 200, wherein each slave indoor unit 200 is connected to the outdoor unit 300 through a main indoor unit 100; wherein, as shown in FIG2, the outdoor unit 300 and the main indoor unit 100 are connected through an indoor-outdoor communication line 410, and the main indoor unit 100 and at least one slave indoor unit 200 are connected through a master-slave communication line 420.

[0075] The aforementioned air conditioning system can be a two-in-one air conditioner, i.e., a Twins model; a three-in-one air conditioner, i.e., a Triple model; or a four-in-one air conditioner, i.e., a Double Twins model.

[0076] The structure and working principle of the Twins air conditioning system are as follows: The Twins model includes two indoor units, one designated as the master unit (master indoor unit 100) and the other as the slave unit (slave indoor unit 200). Aside from the master / slave designation, the hardware configurations of the master indoor unit 100 and slave indoor unit 200 are completely identical. The master indoor unit 100 can receive control from remote controls, wired controllers, central controllers, and Wi-Fi. The slave indoor unit 200 follows the master indoor unit 100 in a synchronized manner, and its operating mode and on / off status are completely consistent with the master indoor unit 100.

[0077] It is understood that the structure and working principle of the air conditioning system of the Triple model, Double Twin model or other similar models are similar to those of the Twin model air conditioning system, and the embodiments of this application will not describe them in detail.

[0078] Based on the hardware structure of the air conditioning system in the above embodiments, the following presents various embodiments of the control method of the air conditioning system of this application.

[0079] As shown in Figure 3, Figure 3 is a flowchart of a control method for an air conditioning system provided in an embodiment of this application; the control method for the air conditioning system may include, but is not limited to, steps S310 and S320.

[0080] Step S310: Obtain the first detection temperature of the target main indoor unit and the second detection temperature of all the slave indoor units corresponding to the target main indoor unit, wherein the first detection temperature and the second detection temperature include the indoor ambient temperature and / or the indoor heat exchanger temperature.

[0081] Step S320: Control the operating status of the air conditioning system according to the first and second detected temperatures.

[0082] In one embodiment, the embodiments of this application can obtain the indoor ambient temperature and / or indoor heat exchanger temperature of the target main indoor unit and all corresponding slave indoor units, and control the operating status of the air conditioning system based on the above-mentioned indoor ambient temperature and / or indoor heat exchanger temperature. Therefore, the embodiments of this application provide a control method for a multi-split air conditioner, and can control based on the indoor ambient temperature or indoor heat exchanger temperature, thereby improving the cooling and heating effect of the air conditioning system, improving user comfort, and ensuring the normal operation of the air conditioning system.

[0083] Specifically, when the first detected temperature is the indoor ambient temperature, the second detected temperature also corresponds to the indoor ambient temperature; when the first detected temperature is the indoor heat exchanger temperature, the second detected temperature also corresponds to the indoor heat exchanger temperature; when the first detected temperature includes both the indoor ambient temperature and the indoor heat exchanger temperature, the second detected temperature also includes both the indoor ambient temperature and the indoor heat exchanger temperature.

[0084] In addition, regarding the indoor heat exchanger temperature, when the air conditioning system is in cooling mode or dehumidification mode, the indoor heat exchanger temperature corresponds to the evaporator temperature of the indoor unit; when the air conditioning system is in heating mode, the indoor heat exchanger temperature corresponds to the condenser temperature of the indoor unit.

[0085] In addition, the operating status of the air conditioning system can be the operating status of various loads, such as the operating frequency of the compressor, the speed of the indoor unit fan, or other states. The embodiments of this application do not specifically limit this.

[0086] It should be noted that the control of the air conditioning system's operating status based on the first and second detected temperatures in step S320 above can include, but is not limited to, the two implementations shown in Figure 4 or Figure 7 below, as detailed below:

[0087] As shown in Figure 4, Figure 4 is a flowchart of a control method for an air conditioning system provided in another embodiment of this application; regarding the above step S320, it may include, but is not limited to, steps S410 and S420.

[0088] Step S410: Determine the target reference temperature based on the first detection temperature and the second detection temperature;

[0089] Step S420: Control the operating status of the compressor according to the target reference temperature.

[0090] In one embodiment, after receiving the first and second detected temperatures, the air conditioning system can calculate at least one target reference temperature for regulating the air conditioning system based on the temperature data, and control the operating state of the compressor based on the target reference temperature.

[0091] It should be noted that the target reference temperature mentioned above can be the average temperature of the first detection temperature and multiple second detection temperatures, the weighted average temperature of the first detection temperature and multiple second detection temperatures, the median temperature of the first detection temperature and multiple second detection temperatures, the maximum temperature of the first detection temperature and multiple second detection temperatures, the second maximum temperature of the first detection temperature and multiple second detection temperatures, the minimum temperature of the first detection temperature and multiple second detection temperatures, the second minimum temperature of the first detection temperature and multiple second detection temperatures, or other types of reference temperatures. The embodiments of this application do not specifically limit this.

[0092] For example, if the first detection temperature is the first indoor ambient temperature and the second detection temperature is the second indoor ambient temperature, the target reference temperature mentioned above can be the average indoor ambient temperature of the first indoor ambient temperature and all the second indoor ambient temperatures.

[0093] For example, if the first detection temperature is the temperature of the first indoor heat exchanger and the second detection temperature is the temperature of the second indoor heat exchanger, the target reference temperature mentioned above can be the extreme value of the indoor heat exchanger temperature among the first indoor heat exchanger temperature and all the second indoor heat exchanger temperatures.

[0094] The extreme values ​​of the indoor heat exchanger temperature mentioned above can be either maximum or minimum. For example, in cooling or dehumidifying mode, the extreme value of the indoor heat exchanger temperature can be the minimum indoor heat exchanger temperature; in heating mode, the extreme value of the indoor heat exchanger temperature can be the maximum indoor heat exchanger temperature.

[0095] Additionally, as shown in Figure 5, which is a flowchart of a control method for an air conditioning system provided in another embodiment of this application, when the target reference temperature is the average indoor ambient temperature of the first indoor ambient temperature and all second indoor ambient temperatures, the operation state of the compressor controlled according to the target reference temperature in step S420 may include, but is not limited to, steps S510, S520, S530 and S540.

[0096] Step S510: Determine to start the compressor based on the average indoor temperature and the compensated set temperature;

[0097] Step S520: Calculate the compressor's operating frequency using a genetic algorithm based on the average indoor temperature;

[0098] Step S530: Correct the operating frequency using a compensation coefficient to obtain the target operating frequency, wherein the compensation coefficient is determined from the number and model of the indoor units;

[0099] Step S540: Control the compressor to operate at the target operating frequency.

[0100] In one embodiment, after calculating the average indoor temperature, the air conditioning system compares the average indoor temperature with the compensated set temperature. If the activation conditions are met, the compressor will be started. As for calculating the target operating frequency of the compressor, the air conditioning system first inputs the average indoor temperature into a genetic algorithm and calculates the operating frequency of the compressor. However, since the air conditioning system includes one or more indoor units, and the number and model of the indoor units also affect the cooling or heating effect of the compressor, the air conditioning system uses a compensation coefficient to correct the operating frequency calculated above, thereby finally obtaining the target operating frequency of the compressor.

[0101] It should be noted that the compensation coefficient mentioned above can be obtained by pre-setting it based on experiments, and the embodiments of this application do not specifically limit it.

[0102] It is understandable that the set temperature can also be obtained after correction, and the correction factor for the set temperature can also be determined from the number and model of the indoor units.

[0103] Additionally, it should be noted that the genetic algorithm mentioned above can be a search algorithm that simulates the process of biological evolution, used to solve optimization problems. In the optimization problem of calculating compressor frequency, the genetic algorithm can find the optimal operating frequency to maximize efficiency or minimize cost.

[0104] Specifically, the following are the basic steps for calculating compressor frequency using a genetic algorithm:

[0105] Initialization: A set of initial solutions, i.e., the initial population, is randomly generated. Each solution represents a possible compressor frequency setting.

[0106] Fitness evaluation: Calculate the fitness value for each solution. Fitness is typically a function of compressor efficiency or cost. For example, if the goal is to minimize energy consumption, the fitness function could be the compressor's energy consumption at a specific frequency.

[0107] Selection: Solutions are selected based on their fitness values. Solutions with high fitness are more likely to be selected to participate in the generation of the next generation.

[0108] Crossover: Selected solutions generate new offspring through a crossover operation. Crossover can be single-point crossover, multi-point crossover, or uniform crossover, etc.

[0109] Mutation: Performing mutation operations on offspring to introduce new genetic diversity. Mutation can be a random change in frequency values ​​or an adjustment of frequencies within a certain range.

[0110] New generation population: A new generation of population is generated through selection, crossover, and mutation.

[0111] Termination condition: The algorithm terminates if the predetermined number of iterations is reached or the fitness no longer improves significantly.

[0112] Output the optimal solution: Select the solution with the highest fitness as the optimal frequency setting for the compressor.

[0113] The key to genetic algorithms lies in the design of the fitness function, which directly affects the search direction and final result. In practical applications, it may also be necessary to consider the physical characteristics of the compressor, operating conditions, environmental factors, etc., to ensure that the optimal solution found not only meets the actual needs but also has a high fitness.

[0114] In one embodiment, the step S510 above, which involves determining to start the compressor based on the average indoor temperature and the compensated set temperature, can be implemented in two ways, including but not limited to the following:

[0115] The first implementation scenario: In cooling or dehumidification mode, when the average indoor temperature is greater than the compensated first set temperature, the compressor is activated.

[0116] The second implementation scenario: In heating mode, when the average indoor temperature is lower than the compensated second set temperature, the compressor is activated.

[0117] Specifically, the compressor's starting conditions can be as follows: If the air conditioning system is set to cooling or dehumidifying mode, and the average indoor temperature is greater than the first set temperature after compensation, it indicates that the indoor temperature is high and the air conditioning system needs to cool, in which case the compressor will start. If the air conditioning system is set to heating mode, and the average indoor temperature is less than the second set temperature after compensation, it indicates that the indoor temperature is low and the air conditioning system needs to heat, in which case the compressor will start.

[0118] Additionally, as shown in Figure 6, which is a flowchart of a control method for an air conditioning system provided in another embodiment of this application, when the target reference temperature is the extreme value of the indoor heat exchanger temperature among the first indoor heat exchanger temperature and all second indoor heat exchanger temperatures, the operation state of the compressor controlled according to the target reference temperature in step S420 may include, but is not limited to, steps S610 and S620.

[0119] Step S610: Obtain the preset threshold temperature;

[0120] Step S620: Control the compressor's operating status based on the indoor heat exchanger's extreme temperature and the preset threshold temperature.

[0121] In one embodiment, if the target reference temperature is the extreme value of the indoor heat exchanger temperature, the air conditioning system will also obtain a preset threshold temperature, compare the extreme value of the indoor heat exchanger temperature with the preset threshold to obtain a comparison result, and control the operating state of the compressor based on the comparison result.

[0122] In one embodiment, in cooling mode or dehumidification mode, the extreme value of the indoor heat exchanger temperature is the minimum indoor heat exchanger temperature. Therefore, regarding the step S620 above, controlling the compressor's operating state based on the extreme value of the indoor heat exchanger temperature and the preset threshold temperature can be implemented in two ways, including but not limited to the following:

[0123] The first implementation scenario: When the minimum indoor heat exchanger temperature is less than the first threshold temperature but greater than or equal to the second threshold temperature, the compressor operating frequency is reduced.

[0124] The second implementation scenario: When the minimum indoor heat exchanger temperature is lower than the second threshold temperature, the compressor is controlled to stop running.

[0125] Specifically, in cooling or dehumidifying mode, the air conditioning system calculates the minimum value among the first indoor heat exchanger temperature and all second indoor heat exchanger temperatures, i.e., the minimum indoor heat exchanger temperature. If the minimum indoor heat exchanger temperature is less than a first threshold temperature but greater than or equal to a second threshold temperature, it indicates that the evaporator temperature of the indoor unit corresponding to the minimum indoor heat exchanger temperature is low. In this case, anti-freeze protection is required, for example, by reducing the compressor's operating frequency. Conversely, if the minimum indoor heat exchanger temperature is less than the second threshold temperature, it indicates that the evaporator temperature of the indoor unit corresponding to the minimum indoor heat exchanger temperature is already extremely low, and the frequency reduction anti-freeze protection is insufficient. In this case, the compressor needs to be shut down.

[0126] It should be noted that, regarding the first threshold temperature, the first threshold temperature in cooling mode may not be equal to the first threshold temperature in dehumidification mode; in addition, regarding the second threshold temperature, the second threshold temperature in cooling mode may not be equal to the second threshold temperature in dehumidification mode.

[0127] It is understood that the first threshold temperature and the second threshold temperature mentioned above can be preset, and the embodiments of this application do not specifically limit the values ​​of the first threshold temperature and the second threshold temperature.

[0128] In one embodiment, in heating mode, the extreme value of the indoor heat exchanger temperature is the maximum indoor heat exchanger temperature. Therefore, regarding the step S620 above, controlling the compressor's operating state based on the extreme value of the indoor heat exchanger temperature and the preset threshold temperature can be implemented in two ways, including but not limited to the following:

[0129] The first implementation scenario: When the maximum indoor heat exchanger temperature is greater than the third threshold temperature but less than or equal to the fourth threshold temperature, reduce the operating frequency of the compressor.

[0130] The second implementation scenario: When the maximum indoor heat exchanger temperature exceeds the fourth threshold temperature, the compressor is controlled to stop running.

[0131] Specifically, in heating mode, the air conditioning system calculates the maximum value among the first indoor heat exchanger temperature and all second indoor heat exchanger temperatures, i.e., the maximum indoor heat exchanger temperature. Then, if the maximum indoor heat exchanger temperature is greater than a third threshold temperature but less than or equal to a fourth threshold temperature, it indicates that the condenser temperature of the indoor unit corresponding to the maximum indoor heat exchanger temperature is high. In this case, high-temperature protection is required, for example, by reducing the compressor's operating frequency. Conversely, if the maximum indoor heat exchanger temperature is greater than the fourth threshold temperature, it indicates that the condenser temperature of the indoor unit corresponding to the maximum indoor heat exchanger temperature is already extremely high, and frequency reduction for high-temperature protection is insufficient. In this case, the compressor needs to be shut down.

[0132] It is understood that the aforementioned third and fourth threshold temperatures can be preset, and the embodiments of this application do not specifically limit the values ​​of the third and fourth threshold temperatures.

[0133] Additionally, as shown in Figure 7, which is a flowchart of a control method for an air conditioning system provided in another embodiment of this application; when the first detected temperature is the first indoor ambient temperature and the second detected temperature is the second indoor ambient temperature, the above step S320 may include, but is not limited to, steps S710 and S720.

[0134] Step S710: Determine the temperature difference between the second indoor ambient temperature and the first indoor ambient temperature;

[0135] Step S720: Control the fan speed of the indoor unit according to the temperature difference.

[0136] In one embodiment, the embodiments of this application can also calculate the temperature difference between the second indoor ambient temperature and the first indoor ambient temperature to understand the indoor cooling or heating effect, and then adjust the fan speed of the indoor unit so that the indoor cooling or heating effect of the indoor unit is close to that of the main indoor unit.

[0137] In one embodiment, as shown in FIG8, in the cooling mode, the control of the fan speed of the indoor unit based on the temperature difference in step S720 above can be implemented in four ways, including but not limited to the following four implementations, which are as follows:

[0138] The first implementation scenario: When the temperature difference is within the first range, reduce the fan speed of the indoor unit.

[0139] The second implementation scenario: When the temperature difference is in the second range, the fan speed of the secondary indoor unit will be adjusted to match the fan speed of the primary indoor unit. The second range is higher than the first range.

[0140] The third implementation scenario: When the temperature difference is in the third range, the fan speed of the indoor unit is increased by the first adjustment range, wherein the third range is higher than the second range.

[0141] The fourth implementation scenario: When the temperature difference is in the fourth range, the fan speed of the indoor unit is increased by the second adjustment range, wherein the fourth range is higher than the third range, and the second adjustment range is greater than the first adjustment range.

[0142] Specifically, as shown in Figure 8, where △T3>△T2>0>△T1, in cooling mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference is within the first interval, indicating that the second indoor ambient temperature T1 从 Less than the first indoor ambient temperature T1 主 This means that the indoor temperature is relatively cold, so it is necessary to reduce the indoor cooling effect of the indoor unit. To do this, you can choose to reduce the fan speed of the indoor unit.

[0143] Additionally, in cooling mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference is located in the second interval, indicating that the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 Since the cooling effect of the indoor unit is similar, it is sufficient to maintain the cooling effect of the indoor unit. To achieve this, you can adjust the fan speed of the indoor unit to match the fan speed of the main indoor unit.

[0144] Additionally, in cooling mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference value is in the third interval, which indicates that the second indoor ambient temperature T1 从 Slightly higher than the first indoor ambient temperature T1 主 This means that the indoor temperature of the secondary indoor unit is slightly higher than that of the main indoor unit, so it is necessary to slightly enhance the indoor cooling effect of the secondary indoor unit. To do this, you can choose to increase the fan speed of the secondary indoor unit by the first adjustment range.

[0145] Additionally, in cooling mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference value is in the fourth interval, which indicates that the second indoor ambient temperature T1 从 Significantly higher than the first indoor ambient temperature T1 主This means that the indoor temperature of the secondary indoor unit is significantly higher than that of the main indoor unit, so it is necessary to significantly enhance the indoor cooling effect of the secondary indoor unit. To address this, the fan speed of the secondary indoor unit can be increased by adjusting the second adjustment range.

[0146] In one embodiment, in dehumidification mode, the control of the indoor unit's fan speed based on the temperature difference in step S720 can be implemented in three ways, including but not limited to the following:

[0147] The first implementation scenario: When the temperature difference is greater than or equal to the first preset difference, the fan speed of the indoor unit is increased, where the first preset difference is a positive number.

[0148] The second implementation scenario: When the temperature difference is less than or equal to the second preset difference, the fan speed of the indoor unit is reduced, where the second preset difference is a negative number.

[0149] The third implementation scenario: When the temperature difference is greater than the second preset difference but less than the first preset difference, the fan speed of the secondary indoor unit will be adjusted to match the fan speed of the primary indoor unit.

[0150] Specifically, in dehumidification mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 If the temperature difference is greater than or equal to the first preset difference, it indicates that the second indoor ambient temperature T1 从 The temperature is significantly higher than the first indoor ambient temperature T1. 主 This means that the indoor temperature of the indoor unit is relatively hot, so it is necessary to enhance the indoor cooling effect of the indoor unit. To do this, you can choose to increase the fan speed of the indoor unit.

[0151] Additionally, in dehumidification mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 If the temperature difference is less than or equal to the second preset difference, it indicates that the second indoor ambient temperature T1 从 The temperature is lower than the first indoor ambient temperature T1 by a certain margin. 主 This means that the indoor temperature is relatively cold, so it is necessary to reduce the indoor cooling effect of the indoor unit. To do this, you can choose to reduce the fan speed of the indoor unit.

[0152] Additionally, in dehumidification mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference is between the first preset difference and the second preset difference, indicating that the second indoor ambient temperature T1 从 Slightly higher or lower than the first indoor ambient temperature T1 主 Or equal to the first indoor ambient temperature T1主 This means that the indoor temperature of the secondary indoor unit is close to or the same as that of the main indoor unit. Therefore, it is only necessary to adjust the fan speed of the secondary indoor unit to match the fan speed of the main indoor unit.

[0153] In one embodiment, as shown in FIG9, in heating mode, the control of the indoor unit's fan speed based on the temperature difference in step S720 can be implemented in four ways, including but not limited to the following:

[0154] The first implementation scenario: When the temperature difference is in the fifth range, reduce the fan speed of the indoor unit.

[0155] The second implementation scenario: When the temperature difference is in the sixth range, the fan speed of the secondary indoor unit will be adjusted to match the fan speed of the primary indoor unit. The sixth range is lower than the fifth range.

[0156] The third implementation scenario: When the temperature difference is in the seventh range, the fan speed of the indoor unit is increased by the third adjustment range, wherein the seventh range is lower than the sixth range.

[0157] The fourth implementation scenario: When the temperature difference is in the eighth range, the fan speed of the indoor unit is increased by the fourth adjustment range, wherein the eighth range is lower than the seventh range, and the fourth adjustment range is greater than the third adjustment range.

[0158] Specifically, as shown in Figure 9, where △T6>0>△T5>△T4, in heating mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference value is in the fifth interval, which indicates that the second indoor ambient temperature T1 从 Greater than the first indoor ambient temperature T1 主 If the indoor temperature is too high, it is necessary to reduce the indoor heating effect of the indoor unit. This can be achieved by reducing the fan speed of the indoor unit.

[0159] Additionally, in heating mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference value is in the sixth interval, which indicates that the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 Since the indoor heating effect is similar, it is sufficient to maintain the indoor heating effect of the indoor unit. To achieve this, you can adjust the fan speed of the indoor unit to match the fan speed of the main indoor unit.

[0160] Additionally, in heating mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主The temperature difference value is in the seventh interval, which indicates that the second indoor ambient temperature T1 从 Slightly lower than the first indoor ambient temperature T1 主 This means that the indoor temperature of the secondary indoor unit is slightly lower than that of the main indoor unit. Therefore, it is necessary to slightly enhance the indoor heating effect of the secondary indoor unit. To address this, the fan speed of the secondary indoor unit can be increased by adjusting the third adjustment range.

[0161] Additionally, in heating mode, if the second indoor ambient temperature T1 从 and the first indoor ambient temperature T1 主 The temperature difference value is in the eighth interval, which indicates that the second indoor ambient temperature T1 从 Significantly lower than the first indoor ambient temperature T1 主 This means that the indoor temperature of the secondary indoor unit is significantly lower than that of the main indoor unit. Therefore, it is necessary to significantly enhance the indoor heating effect of the secondary indoor unit. To address this, the fan speed of the secondary indoor unit can be increased by adjusting the fourth adjustment range.

[0162] Based on the control methods of the air conditioning system described in the above embodiments, the overall embodiments of the control methods of the air conditioning system of this application are presented below.

[0163] First, for ease of description, the embodiments of this application define some parameters as follows:

[0164] T1 主 The indoor ambient temperature of the main indoor unit;

[0165] T1 从 The indoor ambient temperature is measured from the indoor unit.

[0166] △T1 is the temperature difference between the master and slave devices;

[0167] X1 represents the increase in fan speed between the indoor unit and the main indoor unit.

[0168] X2 represents the reduction in fan speed between the indoor unit and the main indoor unit.

[0169] T1 AVG The average indoor ambient temperature of the main indoor unit and the slave indoor unit, i.e., T1 AVG =(T1) 主 +T1 从 ) / 2;

[0170] T2 主 Main indoor unit heat exchanger temperature;

[0171] T2 从 The temperature is measured from the indoor unit's heat exchanger.

[0172] T2 MINThe minimum indoor heat exchanger temperature of the main indoor unit and the slave indoor unit, i.e., T2 MIN =MIN(T2) 主 T2 从 );

[0173] T2 MAX The maximum indoor heat exchanger temperature of the main indoor unit and the slave indoor unit, i.e., T2 MAX =MAX(T2) 主 T2 从 );

[0174] T2 cool1 The temperature value of the heat exchanger is set to anti-freeze protection in cooling mode;

[0175] T2 cool2 The heat exchanger temperature value is set to stop when the cooling mode reaches the set temperature.

[0176] T2 Dry1 The temperature value for heat exchanger protection during dehumidification mode to prevent freezing.

[0177] T2 Dry2 The temperature value of the heat exchanger that will stop when the dehumidification mode reaches the set temperature.

[0178] T2 Heat1 The temperature value of the heat exchanger for high-temperature protection in heating mode;

[0179] T2 Heat2 The heat exchanger temperature value for shutdown when heating mode is reached;

[0180] T SC This is the compensated set temperature.

[0181] As shown in Figure 10, Figure 10 is a flowchart of the cooling, dehumidification, and heating control logic of an air conditioning system provided in an embodiment of this application; the process includes, but is not limited to, the following steps:

[0182] Step S1010: Turn on the air conditioner;

[0183] Step S1020: User sets the boot mode;

[0184] Step S1030: Determine whether it is cooling / dehumidifying mode. If yes, proceed to step S1040; otherwise, proceed to step S1050.

[0185] Step S1040, according to T1 AVG Perform compressor GA algorithm frequency control;

[0186] Step S1041, according to T2 MIN <T2 cool1 Or T2 MIN <T2 Dry1Implement anti-freeze protection for the indoor unit heat exchanger;

[0187] Step S1042, according to T2 MIN <T2 cool2 Or T2 MIN <T2 Dry2 To protect and stop the compressor;

[0188] Step S1050: Determine whether it is in heating mode. If so, proceed to step S1051.

[0189] Step S1051, according to T1 AVG Perform compressor GA algorithm frequency control;

[0190] Step S1052, according to T2 MAX >T2 Heat1 Perform high-temperature protection on the indoor unit heat exchanger;

[0191] Step S1053, according to T2 MAX >T2 Heat2 To protect the compressor, control it to stop.

[0192] 1. Specifically, the Twins model operates in the following way:

[0193] (1) Cooling mode:

[0194] Compressor frequency: T1 temperature value is the average of two indoor units: T1 AVG =(T1) 主 +T1 从 ) / 2, then according to T1 AVG With T SC The system makes a judgment and calculates the compressor's operating frequency based on the GA algorithm (genetic algorithm). The GA algorithm frequency correction table adds a compensation coefficient K1 value correction (K1>1) compared to a single indoor unit.

[0195] Fan speed control: By comparing the T1 signal from the indoor unit 从 Value and T1 of the main indoor unit 主 The values ​​are shown in Figure 8. 1) If it is in the fourth interval, the fan speed of the indoor unit increases by X1 level on the operating fan speed of the main indoor unit; 2) When it is in the third interval, the fan speed of the indoor unit increases by X2 level on the operating fan speed of the main indoor unit; 3) When it is in the second interval, the fan speed of the indoor unit and the fan speed of the main indoor unit are the same; 4) When it is in the first interval, the fan speed of the indoor unit decreases by X3 level on the operating fan speed of the main indoor unit.

[0196] Protection measures: Indoor evaporator anti-freeze protection, T2 temperature is the lower value of the two indoor units: T2 MIN =MIN(T2) 主 T2从 If one of the two indoor units has a T2 < T2 cool1 Then both indoor units will simultaneously enter anti-freeze and frequency reduction mode.

[0197] Shutdown procedure: T2 temperature is the lowest value of the two indoor units: T2 MIN =MIN(T2) 主 T2 从 If one of the two indoor units has a T2 < T2 cool2 If this happens, the outdoor unit compressor will stop running.

[0198] (2) Dehumidification mode:

[0199] Compressor frequency: T1 temperature value is the average of two indoor units: T1 AVG =(T1) 主 +T1 从 ) / 2, then according to T1 AVG With T SC The system makes a judgment and calculates the compressor's operating frequency based on the GA algorithm. The GA algorithm frequency correction table adds a compensation coefficient K2 value correction (K2>1) compared to a single indoor unit.

[0200] Wind speed control: 1) T1 从 >(T1) 主 When +△T1), the fan speed of the indoor unit is increased by X1 levels compared to the operating fan speed of the main indoor unit; 2)T1 从 <(T1) 主 When -△T1), the fan speed of the indoor unit is reduced by X2 levels from the operating fan speed of the main indoor unit; 3)(T1 主 +△T1)<T1 从 <(T1) 主 When +△T1), the fan speed of the indoor unit and the fan speed of the main indoor unit are kept consistent.

[0201] Protection measures: Indoor evaporator anti-freeze protection, T2 temperature is the lower value of the two indoor units: T2 MIN =MIN(T2) 主 T2 从 That is, for one of the two indoor units, T2 < T2. Dry1 Then both indoor units will simultaneously enter anti-freeze mode.

[0202] Shutdown procedure: T2 temperature is the lowest value of the two indoor units: T2 MIN =MIN(T2) 主 T2 从 That is, for one of the two indoor units, T2 < T2. Dry2 If this happens, the outdoor unit compressor will stop running.

[0203] (3) Heating mode:

[0204] Compressor frequency: T1 temperature value is the average of two indoor units: T1 AVG =(T1) 主 +T1 从 ) / 2, then according to T1 AVG With T SC The system makes a judgment and calculates the compressor's operating frequency based on the GA algorithm. The GA algorithm frequency correction table adds a compensation coefficient K3 value correction (K3>1) compared to a single indoor unit.

[0205] Fan speed control: By comparing the T1 signal from the indoor unit 从 Value and T1 of the main indoor unit 主 The values ​​are shown in Figure 9. Compare: 1) If it is in the fifth interval, the fan speed of the indoor unit is reduced by X4 levels compared to the operating fan speed of the main indoor unit; 2) When it is in the sixth interval, the fan speed of the indoor unit and the fan speed of the main indoor unit are the same; 3) When it is in the seventh interval, the fan speed of the indoor unit is increased by X5 levels compared to the operating fan speed of the main indoor unit; 4) When it is in the eighth interval, the fan speed of the indoor unit is increased by X6 levels compared to the operating fan speed of the main indoor unit.

[0206] Protection measures: Indoor condenser high-temperature protection, T2 temperature is the maximum value of the two indoor units: T2 MAX =MAX(T2) 主 T2 从 That is, for one of the two indoor units, T2 > T2. Heat1 Then both indoor units will simultaneously enter the condenser for high-temperature protection.

[0207] Shutdown procedure: T2 temperature is the maximum value of the two indoor units: T2 MAX =MAX(T2) 主 T2 从 That is, for one of the two indoor units, T2 > T2. Heat2 If this happens, the outdoor unit compressor will stop running.

[0208] (4) Automatic mode:

[0209] Operating mode determination: The T1 temperature value is the average of the two indoor units: T1 AVG =(T1) 主 +T1 从 ) / 2, then according to T1 AVG T SC The outdoor temperature T4 is used to determine the operating mode of the entire machine.

[0210] 2. Twins model wiring method:

[0211] As shown in Figure 2, one indoor unit is set as the master indoor unit and the other as the slave indoor unit via DIP switch or remote control engineering mode. The master indoor unit and the outdoor unit are connected via an indoor-outdoor communication cable, while the slave indoor unit is not connected to the outdoor unit. The master indoor unit and the slave indoor unit are connected via X, Y, and E connection cables, thus realizing an indoor-outdoor current loop communication model, which can also achieve the effect of simultaneous power on / off switching.

[0212] 3. Twins models can be expanded into Triple and Double Twins models:

[0213] 1) Triple (one-to-three) model:

[0214] The T1 temperature value is the average of the three indoor units: T1 AVG =(T1) 主 +T1 从1 +T1 从2 ) / 3, same as Twins model, participates in compressor GA algorithm frequency calculation, the frequency correction table increases the compensation coefficient K4 value correction (K4>1) compared to a single indoor unit;

[0215] The minimum temperature T2 is taken as the minimum value of T2 from the three indoor units: T2 MIN =MIN(T2) 主 T2 从1 T2 从2 Similar to the Twins model, it participates in the cooling and dehumidification mode protection process and shuts down.

[0216] The maximum temperature T2 is taken as the maximum value of T2 from the three indoor units: T2 MAX =MAX(T2) 主 T2 从1 T2 从2 Similar to the Twins model, it participates in the heating mode protection process and shutdown process.

[0217] 2) Double Twins (one-to-four) model:

[0218] The T1 temperature value is the average of the four indoor units: T1 AVG =(T1) 主 +T1 从1 +T1 从2 +T1 从3 ) / 4, same as Twins model, participates in compressor GA algorithm frequency calculation, the frequency correction table adds compensation coefficient K5 value correction (K5>1) compared to a single indoor unit;

[0219] The minimum temperature T2 is taken as the minimum value of T2 from the four indoor units: T2 MIN =MIN(T2) 主 T2 从1 T2从2 T2 从3 Similar to the Twins model, it participates in the cooling and dehumidification mode protection process and shuts down.

[0220] The maximum temperature T2 is taken as the maximum value of T2 across the four indoor units: T2 MAX =MAX(T2) 主 T2 从1 T2 从2 T2 从3 Similar to the Twins model, it participates in the heating mode protection process and shutdown process.

[0221] 3) Wiring method handling:

[0222] Configure one indoor unit as the master indoor unit using a DIP switch or remote control engineering mode, and designate the other indoor units as slave indoor units 1, 2, and 3. The master indoor unit and the outdoor unit are connected via an indoor-outdoor communication cable, while the slave indoor units are not connected to the outdoor unit. The master indoor unit and the slave indoor units are connected via X, Y, and E cables.

[0223] 4. Full control processing:

[0224] As shown in Figure 11, 16, 32, or even 64 indoor units can be fully controlled via wired controllers or host computers.

[0225] Based on the control methods of the air conditioning system in the above embodiments, the embodiments of this application have the following technical effects: 1. Twins control logic is applied to the GA algorithm current loop control of air conditioners for the first time; 2. One-to-two air conditioners have simple control logic and uniform and effective cooling and heating effects; 3. One-to-two air conditioners can be expanded into one-to-three or even one-to-four air conditioners; 4. Multiple indoor units can be fully controlled without increasing costs.

[0226] Based on the control methods of the air conditioning system in the above embodiments, the following presents various embodiments of the controller, air conditioning system, computer-readable storage medium, and computer program product of this application.

[0227] As shown in Figure 12, which is a schematic diagram of a controller for executing a control method for an air conditioning system according to an embodiment of this application, the controller 500 implemented in this application includes: a processor 510, a memory 520, and a computer program stored in the memory 520 and executable on the processor 510. In Figure 12, a processor 510 and a memory 520 are used as an example.

[0228] The processor 510 and the memory 520 can be connected via a bus or other means; Figure 12 shows an example of a connection via a bus.

[0229] Memory 520, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory 520 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory 520 may optionally include remotely located memories 520 relative to processor 510, which can be connected to controller 500 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0230] Those skilled in the art will understand that the device structure shown in FIG12 does not constitute a limitation on the controller 500, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0231] In the controller 500 shown in Figure 12, the processor 510 can be used to call the control program stored in the memory 520, thereby implementing the control method of the air conditioning system described above. Specifically, the non-transitory software program and instructions required to implement the control method of the air conditioning system in the above embodiment are stored in the memory 520. When executed by the processor 510, the control method of the air conditioning system in the above embodiment is executed.

[0232] It is worth noting that since the controller 500 of the embodiments of this application can execute the control method of the air conditioning system of any of the above embodiments, the specific implementation method and technical effects of the controller 500 of the embodiments of this application can refer to the specific implementation method and technical effects of the control method of the air conditioning system of any of the above embodiments.

[0233] Furthermore, one embodiment of this application also provides an air conditioning system that includes the controller described in the above embodiment.

[0234] It is worth noting that, since the air conditioning system of the embodiments of this application includes the controller of the above embodiments, and the controller of the above embodiments is capable of executing the control method of the air conditioning system of any of the above embodiments, the specific implementation method and technical effects of the air conditioning system of the embodiments of this application can be referred to the specific implementation method and technical effects of the control method of the air conditioning system of any of the above embodiments.

[0235] Furthermore, one embodiment of this application provides a computer-readable storage medium storing computer-executable instructions for performing the aforementioned air conditioning system control method. Exemplarily, the method steps described in Figures 3 to 7 and Figure 10 above are executed.

[0236] It is worth noting that, since the computer-readable storage medium of the embodiments of this application can execute the control method of the air conditioning system of any of the above embodiments, the specific implementation and technical effects of the computer-readable storage medium of the embodiments of this application can be referred to the specific implementation and technical effects of the control method of the air conditioning system of any of the above embodiments.

[0237] Furthermore, one embodiment of this application also provides a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. A processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium and executes the computer program or computer instructions, causing the computer device to perform the aforementioned air conditioning system control method. Exemplarily, the method steps described above in Figures 3 to 7 and Figure 10 are performed.

[0238] It is worth noting that since the computer program product of the embodiments of this application can execute the control method of the air conditioning system of any of the above embodiments, the specific implementation method and technical effect of the computer program product of the embodiments of this application can refer to the specific implementation method and technical effect of the control method of the air conditioning system of any of the above embodiments.

[0239] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0240] The above provides a detailed description of the preferred embodiments of this application. However, this application is not limited to the above-described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A control method for an air conditioning system, wherein the air conditioning system includes an outdoor unit, at least one main indoor unit, and at least one slave indoor unit, each of the slave indoor units being connected to the outdoor unit through one of the main indoor units; the method includes: Obtain a first detected temperature of the target main indoor unit and a second detected temperature of all the corresponding slave indoor units, wherein the first detected temperature and the second detected temperature include the indoor ambient temperature and / or the indoor heat exchanger temperature; and The operating status of the air conditioning system is controlled based on the first detected temperature and the second detected temperature.

2. The method according to claim 1, wherein, The step of controlling the operating state of the air conditioning system based on the first detected temperature and the second detected temperature includes: A target reference temperature is determined based on the first detected temperature and the second detected temperature; and The compressor's operating status is controlled based on the target reference temperature.

3. The method according to claim 2, wherein, The first detected temperature is the first indoor ambient temperature, the second detected temperature is the second indoor ambient temperature, and the target reference temperature is the average indoor ambient temperature of the first indoor ambient temperature and all the second indoor ambient temperatures. And, controlling the compressor's operating state according to the target reference temperature includes: The compressor is started based on the average indoor temperature and the compensated set temperature. The compressor's operating frequency is calculated using a genetic algorithm based on the average indoor temperature. The operating frequency is corrected using a compensation coefficient to obtain the target operating frequency, wherein the compensation coefficient is determined by the number and model of the indoor units; and The compressor is controlled to operate at the target operating frequency.

4. The method according to claim 3, wherein, The step of determining to start the compressor based on the average indoor temperature and the compensated set temperature includes one of the following: In cooling or dehumidifying mode, if the average indoor temperature is greater than the compensated first set temperature, the compressor is activated. In heating mode, if the average indoor temperature is lower than the compensated second set temperature, the compressor is activated.

5. The method according to any one of claims 2 to 4, wherein, The first detected temperature is the temperature of the first indoor heat exchanger, the second detected temperature is the temperature of the second indoor heat exchanger, and the target reference temperature is the extreme value of the indoor heat exchanger temperature among the first indoor heat exchanger temperature and all the second indoor heat exchanger temperatures. And, controlling the compressor's operating state according to the target reference temperature includes: Obtain the preset threshold temperature; and The compressor's operating status is controlled based on the extreme temperature of the indoor heat exchanger and the preset threshold temperature.

6. The method according to claim 5, wherein, In cooling or dehumidifying mode, the extreme value of the indoor heat exchanger temperature is the minimum indoor heat exchanger temperature; and controlling the compressor's operating state based on the extreme value of the indoor heat exchanger temperature and the preset threshold temperature includes one of the following: When the minimum indoor heat exchanger temperature is less than the first threshold temperature and greater than or equal to the second threshold temperature, the compressor operating frequency is reduced. When the minimum indoor heat exchanger temperature is lower than the second threshold temperature, the compressor is controlled to stop running.

7. The method according to claim 5 or 6, wherein, In heating mode, the extreme value of the indoor heat exchanger temperature is the maximum indoor heat exchanger temperature; and controlling the compressor's operating state based on the extreme value of the indoor heat exchanger temperature and the preset threshold temperature includes one of the following: When the maximum indoor heat exchanger temperature is greater than the third threshold temperature and less than or equal to the fourth threshold temperature, the compressor operating frequency is reduced. When the maximum indoor heat exchanger temperature exceeds the fourth threshold temperature, the compressor is controlled to stop operating.

8. The method according to any one of claims 1 to 7, wherein, The first detected temperature is the first indoor ambient temperature, and the second detected temperature is the second indoor ambient temperature; And, controlling the operating state of the air conditioning system based on the first detected temperature and the second detected temperature includes: Determine the temperature difference between the second indoor ambient temperature and the first indoor ambient temperature; as well as The fan speed of the indoor unit is controlled based on the temperature difference.

9. The method according to claim 8, wherein, In cooling mode, controlling the fan speed of the indoor unit based on the temperature difference includes one of the following: When the temperature difference is within the first range, reduce the fan speed of the indoor unit; When the temperature difference is in the second range, the fan speed of the indoor unit is adjusted to match the fan speed of the main indoor unit, wherein the second range is higher than the first range; When the temperature difference is in the third range, the fan speed of the indoor unit is increased by a first adjustment range, wherein the third range is higher than the second range; When the temperature difference is in the fourth range, the fan speed of the indoor unit is increased by a second adjustment range, wherein the fourth range is higher than the third range, and the second adjustment range is greater than the first adjustment range.

10. The method according to claim 8 or 9, wherein, In dehumidification mode, controlling the fan speed of the indoor unit based on the temperature difference includes one of the following: When the temperature difference is greater than or equal to a first preset difference, the fan speed of the indoor unit is increased, wherein the first preset difference is a positive number; When the temperature difference is less than or equal to a second preset difference, the fan speed of the indoor unit is reduced, wherein the second preset difference is a negative number; When the temperature difference is greater than the second preset difference and less than the first preset difference, the fan speed of the indoor unit is adjusted to match the fan speed of the main indoor unit.

11. The method according to any one of claims 8 to 10, wherein, In heating mode, controlling the fan speed of the indoor unit based on the temperature difference includes one of the following: When the temperature difference is in the fifth range, reduce the fan speed of the indoor unit; When the temperature difference is in the sixth range, the fan speed of the indoor unit is adjusted to match the fan speed of the main indoor unit, wherein the sixth range is lower than the fifth range; When the temperature difference is in the seventh range, the fan speed of the indoor unit is increased by the third adjustment range, wherein the seventh range is lower than the sixth range; When the temperature difference is in the eighth range, the fan speed of the indoor unit is increased by the fourth adjustment range, wherein the eighth range is lower than the seventh range, and the fourth adjustment range is greater than the third adjustment range.

12. A controller comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the control method of an air conditioning system as claimed in any one of claims 1 to 11 when running the computer program.

13. An air conditioning system comprising the controller as described in claim 12.

14. The air conditioning system according to claim 13, wherein, The outdoor unit and the main indoor unit are connected via an indoor-outdoor communication line, and the main indoor unit and at least one of the slave indoor units are connected via a master-slave communication line.

15. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to perform a control method for an air conditioning system as described in any one of claims 1 to 11.

16. A computer program product comprising a computer program or computer instructions, wherein, The computer program or the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer program or the computer instructions from the computer-readable storage medium and executes the computer program or the computer instructions, causing the computer device to perform the control method of the air conditioning system as described in any one of claims 1 to 11.

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